References of "E-prints/Working papers"      in Complete repository Arts & humanities   Archaeology   Art & art history   Classical & oriental studies   History   Languages & linguistics   Literature   Performing arts   Philosophy & ethics   Religion & theology   Multidisciplinary, general & others Business & economic sciences   Accounting & auditing   Production, distribution & supply chain management   Finance   General management & organizational theory   Human resources management   Management information systems   Marketing   Strategy & innovation   Quantitative methods in economics & management   General economics & history of economic thought   International economics   Macroeconomics & monetary economics   Microeconomics   Economic systems & public economics   Social economics   Special economic topics (health, labor, transportation…)   Multidisciplinary, general & others Engineering, computing & technology   Aerospace & aeronautics engineering   Architecture   Chemical engineering   Civil engineering   Computer science   Electrical & electronics engineering   Energy   Geological, petroleum & mining engineering   Materials science & engineering   Mechanical engineering   Multidisciplinary, general & others Human health sciences   Alternative medicine   Anesthesia & intensive care   Cardiovascular & respiratory systems   Dentistry & oral medicine   Dermatology   Endocrinology, metabolism & nutrition   Forensic medicine   Gastroenterology & hepatology   General & internal medicine   Geriatrics   Hematology   Immunology & infectious disease   Laboratory medicine & medical technology   Neurology   Oncology   Ophthalmology   Orthopedics, rehabilitation & sports medicine   Otolaryngology   Pediatrics   Pharmacy, pharmacology & toxicology   Psychiatry   Public health, health care sciences & services   Radiology, nuclear medicine & imaging   Reproductive medicine (gynecology, andrology, obstetrics)   Rheumatology   Surgery   Urology & nephrology   Multidisciplinary, general & others Law, criminology & political science   Civil law   Criminal law & procedure   Criminology   Economic & commercial law   European & international law   Judicial law   Metalaw, Roman law, history of law & comparative law   Political science, public administration & international relations   Public law   Social law   Tax law   Multidisciplinary, general & others Life sciences   Agriculture & agronomy   Anatomy (cytology, histology, embryology...) & physiology   Animal production & animal husbandry   Aquatic sciences & oceanology   Biochemistry, biophysics & molecular biology   Biotechnology   Entomology & pest control   Environmental sciences & ecology   Food science   Genetics & genetic processes   Microbiology   Phytobiology (plant sciences, forestry, mycology...)   Veterinary medicine & animal health   Zoology   Multidisciplinary, general & others Physical, chemical, mathematical & earth Sciences   Chemistry   Earth sciences & physical geography   Mathematics   Physics   Space science, astronomy & astrophysics   Multidisciplinary, general & others Social & behavioral sciences, psychology   Animal psychology, ethology & psychobiology   Anthropology   Communication & mass media   Education & instruction   Human geography & demography   Library & information sciences   Neurosciences & behavior   Regional & inter-regional studies   Social work & social policy   Sociology & social sciences   Social, industrial & organizational psychology   Theoretical & cognitive psychology   Treatment & clinical psychology   Multidisciplinary, general & others     Showing results 1 to 100 of 433 1 2 3 4 5     Intentionality as DispositionBoccaccini, Federico E-print/Working paper (2014)Detailed reference viewed: 6 (2 ULg) Approximation Algorithms for Multi-Dimensional Vector Assignment ProblemsDokka, Trivikram; Crama, Yves ; Spieksma, Frits C.R.E-print/Working paper (2013)We consider a special class of axial multi-dimensional assignment problems called multi-dimensional vector assignment (MVA) problems. An instance of the MVA problem is defined by $m$ disjoint sets, each ... [more ▼]We consider a special class of axial multi-dimensional assignment problems called multi-dimensional vector assignment (MVA) problems. An instance of the MVA problem is defined by $m$ disjoint sets, each of which contains the same number $n$ of $p$-dimensional vectors with nonnegative integral components, and a cost function defined on vectors. The cost of an $m$-tuple of vectors is defined as the cost of their component-wise maximum. The problem is now to partition the $m$ sets of vectors into $n$ $m$-tuples so that no two vectors from the same set are in the same $m$-tuple and so that the total cost of the $m$-tuples is minimized. The main motivation comes from a yield optimization problem in semi-conductor manufacturing. We consider two classes of polynomial-time heuristics for MVA, namely, hub heuristics and sequential heuristics, and we study their approximation ratio. In particular, we show that when the cost function is monotone and subadditive, hub heuristics, as well as sequential heuristics, have finite approximation ratio for every fixed $m$. Moreover, we establish better approximation ratios for certain variants of hub heuristics and sequential heuristics when the cost function is monotone and submodular, or when it is additive. We provide examples to illustrate the tightness of our analysis. Furthermore, we show that the MVA problem is APX-hard even for the case $m=3$ and for binary input vectors. Finally, we show that the problem can be solved in polynomial time in the special case of binary vectors with fixed dimension $p$. [less ▲]Detailed reference viewed: 18 (1 ULg) Le pape François se trompe-t-il ?Choffray, Jean-Marie E-print/Working paper (2013)La crise de panique généralisée à laquelle nous avons assisté depuis 2007/2008 – pour reprendre l’analyse qu’en fait l’homme le mieux informé du monde, Ben Bernanke –, n’est rien d’autre que le double ... [more ▼]La crise de panique généralisée à laquelle nous avons assisté depuis 2007/2008 – pour reprendre l’analyse qu’en fait l’homme le mieux informé du monde, Ben Bernanke –, n’est rien d’autre que le double d’une crise de confiance trouvant son origine dans l’accélération de l’information et la difficulté du pouvoir politique à en percevoir et à en accepter les conséquences. [less ▲]Detailed reference viewed: 61 (18 ULg) Image de l'autre, lieux communs et stéréotypes: Français et Belges francophones au milieu du XXe siècleLanneau, Catherine E-print/Working paper (2013)Detailed reference viewed: 38 (7 ULg) Les FAQs du tableau de bord - Mythes et réalités du tableau de bord à l'ère de la mondialisationVan Caillie, Didier E-print/Working paper (2013)Ce document synthétise en 8 questions clés l'état de notre expérience en matière de conception et d'implémentation d'un tableau de bord dans une organisation, privée ou publique, grande ou petite. Les 8 ... [more ▼]Ce document synthétise en 8 questions clés l'état de notre expérience en matière de conception et d'implémentation d'un tableau de bord dans une organisation, privée ou publique, grande ou petite. Les 8 questions abordées sont : 1. Qu’est-ce qu’un tableau de bord ? 2. Quelle est son utilité pour une organisation à l’ère de la mondialisation ? 3. Quels sont les prérequis à l’utilisation d’un tableau de bord ? 4. Faut-il un tableau de bord unique ou plusieurs tableaux de bord ? 5. Quels indicateurs intégrer au tableau de bord ? 6. Quelle forme donner à un tableau de bord ? 7. Quelle forme donner aux indicateurs retenus ? 8. Comment piloter le projet "Conception & implémentation d’un tableau de bord" ? [less ▲]Detailed reference viewed: 33 (4 ULg) Fast-evolving weather for the coolest of our two new substellar neighboursGillon, Michaël ; Triaud, A. H. M. J.; Jehin, Emmanuel et alE-print/Working paper (2013)We present the results of an intense photometric monitoring in the near-infrared (~0.9 microns) with the TRAPPIST robotic telescope of the newly discovered binary brown dwarf WISE J104915.57-531906.1, the ... [more ▼]We present the results of an intense photometric monitoring in the near-infrared (~0.9 microns) with the TRAPPIST robotic telescope of the newly discovered binary brown dwarf WISE J104915.57-531906.1, the third closest system to the Sun at a distance of only 2 pc. Our twelve nights of photometric time-series reveal a quasi-periodic (P = 4.87+-0.01 h) variability with a maximal peak-peak amplitude of ~11% and strong night-to-night evolution. We attribute this variability to the rotational modulation of fast-evolving weather patterns in the atmosphere of the coolest component (~T1-type) of the binary. No periodic signal is detected for the hottest component (~L8-type). For both brown dwarfs, our data allow us to firmly discard any unique transit during our observations for planets >= 2 Rearth. For orbital periods smaller than ~9.5 h, transiting planets are excluded down to an Earth-size. [less ▲]Detailed reference viewed: 1 (0 ULg) La fin d'une époque...?Choffray, Jean-Marie E-print/Working paper (2013)Il est des moments exceptionnels dans la vie qui rappellent les lignes de fracture de l’histoire. C’est, peut-être, ce que notre monde moderne vit aujourd’hui. Dans ce document, et avant que nous ne ... [more ▼]Il est des moments exceptionnels dans la vie qui rappellent les lignes de fracture de l’histoire. C’est, peut-être, ce que notre monde moderne vit aujourd’hui. Dans ce document, et avant que nous ne vivions ce qui pourrait être un printemps, ou un automne « chaud », il m’a paru utile de mettre un peu d’ordre dans mes observations sur « L’air du temps. » Pas d’autre ambition pour ce texte, donc, que de chercher à comprendre les événements passés, et de prendre date sur les nuages qui s’amoncellent ! [less ▲]Detailed reference viewed: 125 (20 ULg) Retour au travail après une longue absence...Mairiaux, Philippe E-print/Working paper (2013)Detailed reference viewed: 16 (1 ULg) SOUTHERN BLUES NIGHT , Heerlen (NL) 17e ed. , 15 mars 2013Sacré, Robert E-print/Working paper (2013)C.R. de la 17e Southern Blues Night , le 15 mars 2013 à Heerlen ( Nl) + photos ; Khalif Wailin' Walter , Mud Morganfield, Heritage Blues Orchestra, James Harman, Enrico Crivellaro, Gene Taylor, ....Detailed reference viewed: 3 (0 ULg) When does the Market feel it? Magnitude, speed and persistence of market reactions to of cross-listingsMouchette, Xavier ; Biell, Elisabeth; Muller, Aline E-print/Working paper (2013)Detailed reference viewed: 2 (0 ULg) Page de Beckett et Beckett de PageDemoulin, Laurent E-print/Working paper (2013)Compte rendu du livre de Martin Page L'Apiculture selon Samuel Beckett.Detailed reference viewed: 2 (0 ULg) Compte rendu de Claude Simon: SituationsDemoulin, Laurent E-print/Working paper (2013)Compte rendu du passionnant ouvrage dirigé par Paul Dirkx et Pascal Mougin au sujet de Claude Simon. Esquisse de réflexion sur la clôture du texte.Detailed reference viewed: 10 (3 ULg) Gravitationall lensing evidence against extended dark matter halosMagain, Pierre ; Chantry, Virginie E-print/Working paper (2013)It is generally thought that galaxies are embedded in dark matter halos extending well beyond their luminous matter. The existence of these galactic halos is mainly derived from the larger than expected ... [more ▼]It is generally thought that galaxies are embedded in dark matter halos extending well beyond their luminous matter. The existence of these galactic halos is mainly derived from the larger than expected velocities of stars and gas in the outskirts of spiral galaxies. Much less is known about dark matter around early-type (elliptical or lenticular) galaxies. We use gravitational lensing to derive the masses of early-type galaxies deflecting light of background quasars. This provides a robust measurement of the total mass within the Einstein ring, a circle whose diameter is comparable to the separation of the different quasar images. We find that the mass-to-light ratio of the lensing galaxies does not depend on radius, from inner galactic regions out to several half-light radii. Moreover, its value does not exceed the value predicted by stellar population models by more than a factor two, which may be explained by baryonic dark matter alone, without any need for exotic matter. Our results thus suggest that, if dark matter is present in early-type galaxies, its amount does not exceed the amount of luminous matter and its density follows that of luminous matter, in sharp contrast to what is found from rotation curves of spiral galaxies. [less ▲]Detailed reference viewed: 8 (1 ULg) FAO Training in Crop Yield Forecasting. Crop Yield Forecasting Methodology Enhancement – Remote sensing. Erevan 21 - 25 January 2013.Denis, Antoine E-print/Working paper (2013)Power point presentation of the FAO training "Crop Yield Forecasting Methodology Enhancement – Remote sensing", held in Erevan, Armenia, 21 - 25 January 2013 at ARMSTATEHYDROMET. The main objective of ... [more ▼]Power point presentation of the FAO training "Crop Yield Forecasting Methodology Enhancement – Remote sensing", held in Erevan, Armenia, 21 - 25 January 2013 at ARMSTATEHYDROMET. The main objective of this training was the improvement of the Crop Yield Forecasting System (CYFS) in Armenia by introducing a new approach for satellite data integration (use of TIMESAT software and METOP AVHRR NDVI images). This training was held in the framework of the "EC/FAO Programme on Information Systems to Improve Food Security Decision-Making in the European Neighbourhood Policy (ENP) East Area GCP/GLO/275/EC". [less ▲]Detailed reference viewed: 22 (3 ULg) Médias et communication politique : la presse, l'Open Vld et l'impôt sur la fortuneGeuens, Geoffrey E-print/Working paper (2013)Detailed reference viewed: 3 (2 ULg) Warm Spitzer Occultation Photometry of WASP-26b at 3.6{\mu}m and 4.5{\mu}mMahtani, D. P.; Maxted, P. F. L.; Anderson, D. R. et alE-print/Working paper (2013)We present new warm Spitzer occultation photometry of WASP-26 at 3.6{\mu}m and 4.5{\mu}m along with new transit photometry taken in the g,r and i bands. We report the first detection of the occultation of ... [more ▼]We present new warm Spitzer occultation photometry of WASP-26 at 3.6{\mu}m and 4.5{\mu}m along with new transit photometry taken in the g,r and i bands. We report the first detection of the occultation of WASP-26b, with occultation depths at 3.6{\mu}m and 4.5{\mu}m of 0.00126 +/- 0.00013 and 0.00149 +/- 0.00016 corresponding to brightness temperatures of 1825+/-80K and 1725+/-89K, respectively. We find that the eccentricity of the orbit is consistent with a circular orbit at the 1{\sigma} level with a 3{\sigma} upper limit of e < 0.04. According to the activity-inversion relation of Knutson et al. (2010), WASP-26b is predicted to host a thermal inversion. The brightness temperatures deduced from the eclipse depths are consistent with an isothermal atmosphere, although it is within the uncertainties that the planet may host a weak thermal inversion. The data are equally well fit by atmospheric models with or without a thermal inversion. We find that variation in activity of solar-like stars does not change enough over the time-scales of months or years to change the interpretation of the Knutson et al. (2010) activity-inversion relation, provided that the measured activity level is averaged over several nights. Further data are required to fully constrain the thermal structure of the atmosphere because the planet lies very close to the boundary between atmospheres with and without a thermal inversion. [less ▲]Detailed reference viewed: 4 (0 ULg) Impact of uncertainty in climate forcing on projections of the West Antarctic ice sheet over the 21st and 22nd centuriesPayne, A.J.; Cornford, S.L.; Martin, D.F. et alE-print/Working paper (2013)Detailed reference viewed: 17 (0 ULg) Lettre d’information trimestrielle du projet Développement d’Alternatives Communautaires à l’Exploitation Forestière IllégaleBoldrini, Sylvie; Mombogou, Carl; Meunier, Quentin et alE-print/Working paper (2013)Detailed reference viewed: 11 (0 ULg) Social Security and Economic IntegrationArtige, Lionel ; Dedry, Antoine ; Pestieau, Pierre E-print/Working paper (2013)Detailed reference viewed: 9 (2 ULg) L’écriture au présent de Thierry HorguelinDemoulin, Laurent E-print/Working paper (2013)Les notations prises sur le vif par Thierry Horguelin portent un regard singulier sur notre quotidien.Detailed reference viewed: 18 (0 ULg) Spitzer Observations of GJ3470b: a Very Low-density Neptune-size Planet Orbiting a Metal-rich M dwarfDemory, Brice-Olivier; Torres, Guillermo; Neves, Vasco et alE-print/Working paper (2013)We present Spitzer/IRAC 4.5-micron transit photometry of GJ3470b, a Neptune-size planet orbiting a M1.5 dwarf star with a 3.3-day period recently discovered in the course of the HARPS M-dwarf survey. We ... [more ▼]We present Spitzer/IRAC 4.5-micron transit photometry of GJ3470b, a Neptune-size planet orbiting a M1.5 dwarf star with a 3.3-day period recently discovered in the course of the HARPS M-dwarf survey. We refine the stellar parameters by employing purely empirical mass-luminosity and surface brightness relations constrained by our updated value for the mean stellar density, and additional information from new near-infrared spectroscopic observations. We derive a stellar mass of M_star = 0.539+0.047-0.043 M_sun and a radius of R_star = 0.568+0.037-0.031 R_sun. We determine the host star of GJ3470b to be metal-rich, with a metallicity of [Fe/H] = +0.20 +/- 0.10 and an effective temperature of Teff = 3600 +/- 100 K. The revised stellar parameters yield a planetary radius R_pl = 4.83+0.22-0.21 R_Earth that is 13 percent larger than the value previously reported in the literature. We find a planetary mass M_pl = 13.9+1.5-1.4 M_Earth that translates to a very low planetary density, rho_pl = 0.72+0.13-0.12 gcm-3, which is 33% smaller than the original value. With a mean density half of that of GJ436b, GJ3470b is an example of a very low-density low-mass planet, similar to Kepler-11d, Kepler-11e, and Kepler-18c but orbiting a much brighter nearby star that is more conducive to follow-up studies. [less ▲]Detailed reference viewed: 7 (0 ULg) La pratique des inventaires multi-ressources dans les forêts communautaires, ou comment rendre la foresterie communautaire inaccessible aux villageoisMeunier, Quentin; Vermeulen, Cédric ; Boldrini, Sylvie et alE-print/Working paper (2013)Des inventaires trop complexes imposés aux populations locales risquent de freiner considérablement l'appropriation des futures forêts communautaires gabonaises. La présente fiche technique compare les ... [more ▼]Des inventaires trop complexes imposés aux populations locales risquent de freiner considérablement l'appropriation des futures forêts communautaires gabonaises. La présente fiche technique compare les avantages et inconvénients des inventaires par poches, des inventaires d'exploitation habituellement réalisés dans les Forêts Communautaires camerounaises et une approche plus simple par normes proposée par l'équipe rédactionnelle. [less ▲]Detailed reference viewed: 24 (1 ULg) Analyse des divergences entre forêts communautaires et permis de gré à gré au GabonMeunier, Quentin; Mombougou, Carl; Boldrini, Sylvie et alE-print/Working paper (2013)Detailed reference viewed: 27 (1 ULg) A Learning Procedure for Sampling Semantically Different Valid ExpressionsLupien St-Pierre, David ; Maes, Francis; Ernst, Damien et alE-print/Working paper (2013)Detailed reference viewed: 21 (3 ULg) Les permis ratifiés par le législateur en Région wallonne (« DAR ») mis en échec par la Cour de justice de l’Union européenne et la Cour constitutionnelleDelnoy, Michel E-print/Working paper (2013)Detailed reference viewed: 32 (14 ULg) La tolérance est coûteuse. On essaye l'intolérance ?Jacquemain, Marc E-print/Working paper (2013)Le texte a servi à présenter une conférence à des étudiants de bacheliers pédagogiques. Il rappelle, sur un ton informel, mais en essayant d'être rigoureux, la place et l'importance de la tolérance dans ... [more ▼]Le texte a servi à présenter une conférence à des étudiants de bacheliers pédagogiques. Il rappelle, sur un ton informel, mais en essayant d'être rigoureux, la place et l'importance de la tolérance dans toute conception raisonnable de la vie en société. Il rappelle notamment que si la tolérance n'est pas une vertu "flamboyante", elle constitue un préalable indispensable à d'autres modalités plus exigeantes du vivre ensemble [less ▲]Detailed reference viewed: 14 (0 ULg) Oceanic forcing of Antarctic climate change: A study using a stretched-grid atmospheric general circulation modelKrinner, Gerhard; Largeron, Chloé; Agosta, Cécile et alE-print/Working paper (2013)A variable-resolution atmospheric general circulation model is used for climate change projections over the Antarctic. The present-day simulation uses prescribed observed sea-surface conditions, while a ... [more ▼]A variable-resolution atmospheric general circulation model is used for climate change projections over the Antarctic. The present-day simulation uses prescribed observed sea-surface conditions, while a set of five simulations for the end of the 21st century (2070-2099) under the SRES-A1B scenario uses sea-surface condition anomalies from selected CMIP3 coupled models. Analysis of the results shows that the prescribed sea- surface condition anomalies have a very strong influence on the simulated climate change on the Antarctic continent, up to twice the direct effect of the prescribed greenhouse gas concentration changes in the AGCM simulations. An analysis of circulation changes using self-organizing maps shows that the simulated climate change on regional scales is not principally caused by shifts of the frequencies of the dominant circulation patterns, except for precipitation changes in some coastal regions. We suggest that in some respects the use of bias-corrected sea-surface boundary conditions in climate projections with a variable-resolution atmospheric general circulation model has some distinct advantages over the use of limited-area atmospheric circulation models directly forced by generally biased AOGCM output. [less ▲]Detailed reference viewed: 24 (0 ULg) The agyieus pillar, Egyptian legal papyri, and the cult of Arsinoe Philadephos in the streets of AlexandriaCaneva, Stefano E-print/Working paper (2013)This paper is divided into two sections. The first aims to offer a thorough discussion of the agyieus and of types of altar for Arsinoe Philadelphos as well as of the offerings devoted to her in the ... [more ▼]This paper is divided into two sections. The first aims to offer a thorough discussion of the agyieus and of types of altar for Arsinoe Philadelphos as well as of the offerings devoted to her in the Ptolemaic kingdom. The second explores the relationship that exists between the agyieus and the creation of cultic double names of Arsinoe in the streets of Alexandria. By combining the evidence on Arsinoe’s altars with a set of legal papyri attesting her divine names in Alexandria, I argue that in the Ptolemaic capital, the agyieis had a twofold function. They served firstly, as cult places for Arsinoe and secondly, as city landmarks. I will also argue that the second function of the agyieis, as city landmarks, survived the Ptolemaic cult of the Philadelphos and was ultimately preserved in long-lasting toponyms. [less ▲]Detailed reference viewed: 17 (1 ULg) Given to a deity? Religious and Social Reappraisal of Human Consecrations in the Greek WorldCaneva, Stefano E-print/Working paper (2013)Various cases of human beings “dedicated” to deities are attested in Greek epigraphical evidence. Are these kinds of offerings comparable to the dedication of inanimate objects? Besides, does the fact ... [more ▼]Various cases of human beings “dedicated” to deities are attested in Greek epigraphical evidence. Are these kinds of offerings comparable to the dedication of inanimate objects? Besides, does the fact that someone is said to be “sacred” to a specific deity necessarily involve that he went through a process of dedication? This article aims at providing a global picture of different situations in which processes of dedications took place. Among the several issues that are tackled, the cornerstone of this article consists of two questions: for what purposes did some people decide to consecrate a human being to a deity and what were the consequences for the consecrated individuals on religious and social levels? Different categories of persons will be contrasted, in terms of processes through which they acquire their new status but also in terms of the freedom/lack of freedom which is conveyed by this new status. It will also be shown that, as far as method is concerned, it is necessary to complete a lexical analysis with a contextual perspective for a deeper understanding of the problem. [less ▲]Detailed reference viewed: 22 (2 ULg) From Alexander to the Theoi Adelphoi: Foundation and Legitimation of a Monarchy (332-246 BC)Caneva, Stefano E-print/Working paper (2013)The book focuses on the first century of the Macedonian rule over Egypt in order to study how the Ptolemies had their power legitimated in Africa and in the broader Mediterranean context. Literary sources ... [more ▼]The book focuses on the first century of the Macedonian rule over Egypt in order to study how the Ptolemies had their power legitimated in Africa and in the broader Mediterranean context. Literary sources, inscriptions, papyri, and iconography, both Greek and Egyptian, are used to set an interdisciplinary approach to the topic. Major attention is paid to the social contexts where power legitimating motifs originate and spread as well as to the further history of there themes in later tradition. The book comprises Introduction, 3 sections and 5 chapters. Section I: From Alexander to the Ptolemies. Chapter I: Alexander in Egypt. Focus is on the role of Siwah in the perspective of the Greek, Macedonian, and Egyptian legitimation of Alexander's power in Egypt; particular attention is paid to how legitimating traditions are used and reshaped to the purpose of broadening the limits of Macedonian kingship by depicting Alexander as a Greek hero and as the heir of Pharaohs. Chapter II: In the name of Alexander. The chapter discusses the career of Ptolemy I and his strategies to legitimate his personal power in Egypt and then to establish a new dynasty. Section II: The Political Use of Religious Festivals under Ptolemy II. Chapter III: The Ptolemaia. The chapter discussed the festival Ptolemaia from the point of view of the interaction between political networks and religion. Chapter IV: Anatomy of a Festival: The Grand Procession of Ptolemy II. Focus is on the creation of a political and religious legitimating representation of the dynasty through the scenes of the procession. Detailed discussion of specific traits of Hellenistic religion is provided, especially concerning Dionysus. Section III: Shaping the dynastic couple Chapter V: The Theoi Adelphoi. The political and religious interaction between Ptolemy II and Arsinoe II are discussed to provide a study of the creation of the royal couple as a leading motif in the representation of the dynasty. [less ▲]Detailed reference viewed: 22 (2 ULg) Theatralität in E.T.A. Hoffmanns narrativen Texten: Zum Beispiel "Das Fräulein von Scuderi"Küpper, Achim E-print/Working paper (2013)Detailed reference viewed: 5 (2 ULg) L'atelier du réalisateur ou l'usine à répliques. Citations iconographiques chez Luis Buñuel : Francisco de Goya (et d'autres) dans "Belle de jour"Küpper, Achim E-print/Working paper (2013)Detailed reference viewed: 18 (2 ULg) High-resolution modelling of the Antarctic surface mass balance, application for the 20th, 21st and 22nd centuriesAgosta, Cécile ; Favier, Vincent; Krinner, Gerhard et alE-print/Working paper (2013)About 75% of the Antarctic surface mass gain occurs over areas below 2000 m asl, which cover 40% of the grounded ice-sheet. As the topography is complex in many of these regions, SMB modelling is highly ... [more ▼]About 75% of the Antarctic surface mass gain occurs over areas below 2000 m asl, which cover 40% of the grounded ice-sheet. As the topography is complex in many of these regions, SMB modelling is highly dependent on resolution, and studying the impact of Antarctica on the future rise in sea level requires physical approaches. We have developed a low time consuming, physical downscaling model for high-resolution (15 km) long-term surface mass balance (SMB) projections. Here, we present results of this model, called SMHiL (surface mass balance high-resolution downscaling), which was forced with the LMDZ4 atmospheric general circulation model to assess SMB variation in the 21st and the 22nd centuries under two different scenarios. The higher resolution of SMHiL better reproduces the geographical patterns of SMB and increase significantly the averaged SMB over the grounded ice-sheet for the end of the 20th century. A comparison with more than 3200 quality-controlled field data shows that LMDZ4 and SMHiL compare the observed values equally well. Nevertheless, field data below 2000 m asl are too scarce to efficiency show the interest of SMHiL and measuring the SMB in these undocumented areas should be then a future scientific priority. Our results suggest that running LMDZ4 at a finer resolution (15km) may give a future increase in SMB in Antarctica about 30% higher than by using its standard resolution (60 km) due to higher increase in precipitation in the coastal areas at 15 km. However, a part (~ 15%) of these discrepancies could be an artefact from SMHiL since it neglects the foehn effect and then likely overestimates the precipitation increase. Future changes in the Antarctic SMB at low elevations will result from the conflict between higher snow accumulation and runoff. For this reason, developing downscaling models is crucial to represent processes in sufficient detail and correctly model the SMB in the coastal areas. [less ▲]Detailed reference viewed: 31 (3 ULg) L’appropriation discursive et pratique du concept de développement durable par des GACEURS et des bénévoles/travailleurs du commerce équitable, vers un imaginaire critique partagé ?Thys, Séverine E-print/Working paper (2013)Ce Working Paper interroge l’existence d’un référentiel critique et argumentatif commun à des initiatives d’Economie Sociale du secteur alimentaire. En utilisant l’appareillage théorique de la « ... [more ▼]Ce Working Paper interroge l’existence d’un référentiel critique et argumentatif commun à des initiatives d’Economie Sociale du secteur alimentaire. En utilisant l’appareillage théorique de la « sociologie des épreuves », les propos de GACEURS et de bénévoles/salariés du commerce équitable sont analysés afin de voir si le concept de Développement Durable porte en lui un projet sociétal, un référentiel fédérateur, apte à mobiliser des consom’acteurs autour de revendications partagées. L’analyse met en évidence un corpus critique commun articulé autour de quatre axes, dont trois relèvent bien du développement durable, mais nuance ses conclusions au vu de la faiblesse de la grammaire argumentative construite, et des contradictions qui la parcourent. [less ▲]Detailed reference viewed: 7 (2 ULg) Excess Return Forecast Using a Dynamic Asset Class Factor ModelHübner, Georges ; Sougné, Danielle ; Wijnandts, Jean-Charles E-print/Working paper (2012)We propose a Dynamic Hierarchical Factor Model using Asset classes to predict mutual funds excess returns. We use different forecast combination schemes of bivariate model considering each asset class ... [more ▼]We propose a Dynamic Hierarchical Factor Model using Asset classes to predict mutual funds excess returns. We use different forecast combination schemes of bivariate model considering each asset class factor in isolation. Primary analysis highlights the importance to account for asset class specific variations together with between classes or common variations. Further refinements of the a priori repartition are however in order. Forecasting performance of the model outperforms the historical mean benchmark both in terms of MSPE and utility based criteria. A forecasting exercise matching more closely real-time conditions must be undertaken to validate these initial results. [less ▲]Detailed reference viewed: 25 (1 ULg) A Photometric Study of the Hot Exoplanet WASP-19bLendl, M.; Gillon, Michaël ; Queloz, D. et alE-print/Working paper (2012)Context: When the planet transits its host star, it is possible to measure the planetary radius and (with radial velocity data) the planet mass. For the study of planetary atmospheres, it is essential to ... [more ▼]Context: When the planet transits its host star, it is possible to measure the planetary radius and (with radial velocity data) the planet mass. For the study of planetary atmospheres, it is essential to obtain transit and occultation measurements at multiple wavelengths. Aims: We aim to characterize the transiting hot Jupiter WASP-19b by deriving accurate and precise planetary parameters from a dedicated observing campaign of transits and occultations. Methods: We have obtained a total of 14 transit lightcurves in the r'-Gunn, IC, z'-Gunn and I+z' filters and 10 occultation lightcurves in z'-Gunn using EulerCam on the Euler-Swiss telescope and TRAPPIST. We have also obtained one lightcurve through the narrow-band NB1190 filter of HAWK-I on the VLT measuring an occultation at 1.19 micron. We have performed a global MCMC analysis of all new data together with some archive data in order to refine the planetary parameters and measure the occultation depths in z'-band and at 1.19 micron. Results: We measure a planetary radius of R_p = 1.376 (+/-0.046) R_j, a planetary mass of M_p = 1.165 (+/-0.068) M_j, and find a very low eccentricity of e = 0.0077 (+/-0.0068), compatible with a circular orbit. We have detected the z'-band occultation at 3 sigma significance and measure it to be dF_z'= 352 (+/-116) ppm, more than a factor of 2 smaller than previously published. The occultation at 1.19 micron is only marginally constrained at dF_1190 = 1711 (+/-745) ppm. Conclusions: We have shown that the detection of occultations in the visible is within reach even for 1m class telescopes if a considerable number of individual events are observed. Our results suggest an oxygen-dominated atmosphere of WASP-19b, making the planet an interesting test case for oxygen-rich planets without temperature inversion. [less ▲]Detailed reference viewed: 13 (3 ULg) Lettre d'Information trimestrielle du projet N°8Meunier, Quentin; Mombougou, Carl; Vermeulen, Cédric E-print/Working paper (2012)Detailed reference viewed: 12 (2 ULg) Les investisseurs institutionnels dans les Maisons de luxe familiales belges: entre diabolisation et sacralisationRiguelle, France ; Van Caillie, Didier E-print/Working paper (2012)Abstract : Belgian family luxury Houses are increasingly confrontated to a problem of independence caused by the growing influence of great financial groups and of private investment funds, on the one ... [more ▼]Abstract : Belgian family luxury Houses are increasingly confrontated to a problem of independence caused by the growing influence of great financial groups and of private investment funds, on the one hand, and by a problem of image due to their Belgian origin, on the other hand. Nevertheless, their growing need for internationalization in order to counter the threats of the market and to seize opportunities leads them to concede one part of their control to institutional investors. The interest of this research is to study the potential impact, as perceived by the leaders of Belgian luxury Houses, of the venue of public institutional investors in their capital structure. We show that this perceived impact oscillates between sacralization and diabolisation of public institutional investors. [less ▲]Detailed reference viewed: 39 (7 ULg) Comparison Between Mornigstar Ratings And Traditional Performance Measures RatingsBodson, Laurent ; Delhalle, Stéphanie ; Sougné, Danielle E-print/Working paper (2012)In this paper, we compare Morningstar ratings with those obtained using the same methodology of rating attribution with a set of commonly used performance measures. We look at three types of investment ... [more ▼]In this paper, we compare Morningstar ratings with those obtained using the same methodology of rating attribution with a set of commonly used performance measures. We look at three types of investment horizons: 3-year, 5-year and 10-year ratings. Our analysis focuses on Open-End US Mutual Funds available in Morningstar Direct Database from which we create three sets of 16,617, 13,505 and 7,992 funds corresponding respectively to the three investment horizons analyzed. Our results show that Morningstar ratings are very close (correlation around 80%) to ratings obtained with Sharpe’s alpha, Jensen’s alpha, Four-factor alpha and Excess returns. And less significantly, we also observe that ratings given by the Sortino ratio, Sharpe MVaR, M-squared, Sharpe ratio, One-factor information ratio, Four-factor information ratio, Prospect ratio and Stutzer index are quite similar to Morningstar’s ratings (correlation lying between 70% and 78%). At the other end of the spectrum, however, ratings obtained with Annual return diverge widely from Morningstar ratings. We also analyse which explanatory variables can explain the differences between ratings computed with Morningstar as compared with the alternative performance measures using a probit regression. We find that Load adjustments, tax and risk included by Morningstar in the computation of MRAR are often determining. Expense ratio, Return Skewness and the three factors of the Fama-French model (Beta, Size load and Book-to-market loading) can be significant determinants depending on the performance measure analyzed and on the selected investment horizon. Fund characteristics such as Age, Fund size, Turnover rate and Manager tenure are not statistically significant in determining the differences in ratings. Besides, we analyze differences between ratings (in terms of number of STARs) and we confirm previous results (i.e. the link between Morningstar’s and the alternative performance measures, but also the explanatory capacity of the load for lots of differences between ratings). Finally, we test all possible combinations of our set of performance measures, and observe that Sharpe’s alpha, excess return, Sharpe MVaR, Four-factor alpha and Jensen’s alpha are part of the best combinations. As a conclusion, Morningstar ratings can be replicated using simple and traditional performance measures but the replication is less accurate when tax and loads features are important. Therefore, Morningstar data management and access bring the most of its ratings’ value added. [less ▲]Detailed reference viewed: 20 (3 ULg) Is dark matter made of mirror matter? Evidence from cosmological dataCiarcelluti, Paolo; Wallemacq, Quentin E-print/Working paper (2012)We present new fast numerical simulations of cosmic microwave background and large scale structure in the case in which the cosmological dark matter is made entirely or partly of mirror matter. We ... [more ▼]We present new fast numerical simulations of cosmic microwave background and large scale structure in the case in which the cosmological dark matter is made entirely or partly of mirror matter. We consider scalar adiabatic primordial perturbations at linear scales in a flat Universe. The speed of the simulations allows us for the first time to use Markov Chain Monte Carlo analyses to constrain the mirror parameters. A Universe with pure mirror matter can fit very well the observations, equivalently to the case of an admixture with cold dark matter. In both cases, the analyses show a clear indication of the presence of a consistent amount of mirror dark matter, 0.05 < Ω_{mirror} h^2 < 0.12. [less ▲]Detailed reference viewed: 24 (6 ULg) Dominique A trois foisDemoulin, Laurent E-print/Working paper (2012)Triple actualité pour Dominique A: un nouveau disque, une tournée de concerts, un livre dans lequel il réfléchit, de façon ouverte et nuancée, à la question de l'identité et des origines.Detailed reference viewed: 8 (0 ULg) Multi-period vehicle loading with stochastic release datesArda, Yasemin ; Crama, Yves ; Kronus, David et alE-print/Working paper (2012)This paper investigates a multi-period vehicle loading problem with stochastic information regarding the release dates of items to be transported. The deterministic version of the problem can be ... [more ▼]This paper investigates a multi-period vehicle loading problem with stochastic information regarding the release dates of items to be transported. The deterministic version of the problem can be formulated as a large-scale set covering problem. Several heuristic algorithms are proposed to generate decision policies for the stochastic optimization model over a long rolling horizon. The resulting policies have been extensively tested on instances which display the main characteristics of the industrial case-study that motivated the research. The tests demonstrate the benefits of the multi-period stochastic model over simple myopic strategies. A simple and efficient heuristic is shown to deliver good policies and to be robust against errors in the estimation of the probability distribution of the release dates. [less ▲]Detailed reference viewed: 27 (4 ULg) Coûts d’efficience des dépositaires centraux des titres des pays africainsTeuwa Nkeuwo, Mathieu Hugues ; Muller, Aline E-print/Working paper (2012)This paper examines the potential of economies of scale and scope among the African central securities depository institutions. We address whether the consolidation of settlement and custody activities of ... [more ▼]This paper examines the potential of economies of scale and scope among the African central securities depository institutions. We address whether the consolidation of settlement and custody activities of securities make these institutions efficient in light of the costs of service parameter. To do this, we rely on the translog cost function [introduced by Christensen et al. (1971)] and the constant elasticity of substitution of seven central securities depositories in Africa over the period 2004-2009. The results show the existence of significant economies of scale and scope in these institutions. The extent of these economies differs upon the size of the institution and the level of automation mechanisms to combine securities settlement and custody activities. Our findings also indicate that, unlike large institutions in countries such as South Africa and Mauritius, which have heavily invested in automation mechanisms, smaller institutions have higher service costs, which implies a need for consolidation of activities to reduce these costs. [less ▲]Detailed reference viewed: 12 (2 ULg) Evading death by vacuumBarroso, Augusto; Ferreira, Pedro; Ivanov, Igor et alE-print/Working paper (2012)Quantum Mechanics and Quantum Field Theory have forced a reappraisal of the vacuum's exact nature. This is specially true in the Standard Model of particle interactions, where spontaneous symmetry ... [more ▼]Quantum Mechanics and Quantum Field Theory have forced a reappraisal of the vacuum's exact nature. This is specially true in the Standard Model of particle interactions, where spontaneous symmetry breaking of the electroweak symmetry by the vacuum is mandatory for elementary particles to acquire masses. The mechanism implemented with one scalar doublet leads to a simple vacuum structure at current energies. But, the open possibility that there might be two scalar doublets, enriches the vacuum structure, allowing for the possibility that we might now be in a metastable state, which we dub the panic vacuum. Current experiments at LHC are probing the Higgs particle predicted as a result of the spontaneous symmetry breaking. Remarkably, these experiments may also be useful to dispel the panic vacuum, as we show in a simple model with two doublets and a softly broken U(1) symmetry. [less ▲]Detailed reference viewed: 7 (1 ULg) Comoment Risk and Stock ReturnsLambert, Marie ; Hübner, Georges E-print/Working paper (2012)Detailed reference viewed: 20 (3 ULg) Les Jourdain de la réflexivité : Du bon usage des incidents diplomatiquesThoreau, François ; Despret, Vinciane E-print/Working paper (2012)Detailed reference viewed: 100 (29 ULg) Les littératures selon Nicolas AncionDemoulin, Laurent E-print/Working paper (2012)Compte rendu du roman de Nicolas Ancion "La Cravate de Simenon" paru dans une collection destinée à l'apprentissage du français.Detailed reference viewed: 19 (0 ULg) Deregulation of Oxytocin and Vasopressin in Williams Syndrome: A New Model For Exploring Neurogenetics and Neurobiology of Human Social BehaviorGeenen, Vincent ; Bakker, Julie ; Hoekzema, Elseline et alE-print/Working paper (2012)Detailed reference viewed: 21 (8 ULg) WASP-54b, WASP-56b and WASP-57b: Three new sub-Jupiter mass planets from SuperWASPFaedi, F.; Pollacco, D.; Barros, S. C. C. et alE-print/Working paper (2012)We present three newly discovered sub-Jupiter mass planets from the SuperWASP survey: WASP-54b is a heavily bloated planet of mass 0.636$^{+0.025}_{-0.024}$ \mj and radius 1.653$^{+0.090}_{-0.083}$ \rj ... [more ▼]We present three newly discovered sub-Jupiter mass planets from the SuperWASP survey: WASP-54b is a heavily bloated planet of mass 0.636$^{+0.025}_{-0.024}$ \mj and radius 1.653$^{+0.090}_{-0.083}$ \rj. It orbits a F9 star, evolving off the main sequence, every 3.69 days. Our MCMC fit of the system yields a slightly eccentric orbit ($e=0.067^{+0.033}_{-0.025}$) for WASP-54b. We investigated further the veracity of our detection of the eccentric orbit for WASP-54b, and we find that it could be real. However, given the brightness of WASP-54 V=10.42 magnitudes, we encourage observations of a secondary eclipse to draw robust conclusions on both the orbital eccentricity and the thermal structure of the planet. WASP-56b and WASP-57b have masses of 0.571$^{+0.034}_{-0.035}$ \mj and $0.672^{+0.049}_{-0.046}$ \mj, respectively; and radii of $1.092^{+0.035}_{-0.033}$ \rj for WASP-56b and $0.916^{+0.017}_{-0.014}$ \rj for WASP-57b. They orbit main sequence stars of spectral type G6 every 4.67 and 2.84 days, respectively. WASP-56b and WASP-57b show no radius anomaly and a high density possibly implying a large core of heavy elements; possibly as high as $\sim$50 M$_{\oplus}$ in the case of WASP-57b. However, the composition of the deep interior of exoplanets remain still undetermined. Thus, more exoplanet discoveries such as the ones presented in this paper, are needed to understand and constrain giant planets' physical properties. [less ▲]Detailed reference viewed: 6 (0 ULg) Risk Horizon and Expected Market ReturnsHübner, Georges ; Lejeune, Thomas E-print/Working paper (2012)The paper proposes an equilibrium asset pricing model that accounts of the incomplete information on returns distribution and investors' preferences. Only moments up to order four of unknown unconditional ... [more ▼]The paper proposes an equilibrium asset pricing model that accounts of the incomplete information on returns distribution and investors' preferences. Only moments up to order four of unknown unconditional distribution can be observed, and the model does not impose that portfolio diversi fication or moments preference should hold. Using Chebyshev-type of inequalities, an intuitive risk measure (risk horizon) is introduced with reference to the speed of convergence of a security's mean return to its expectations. By an arbitrage argument, this risk measure is related to the horizon of treasury securities in a system of equations that allows the calibration of the model parameters using term structure information. In particular, the expected return on the market portfolio can be endogenously estimated inside this system. The model calibration on U.S. market data provides plausible parameters estimates and interesting cyclical patterns in the time series of the expected return. The empirical relevance of these estimates is examined with tests of statistical and economic predictive ability for stock excess returns. The results provide signi ficant evidence on the added value of the estimates when compared to popular predictors found in the literature (see a.o. Lettau and Ludvigson, 2001; Rapach and Wohar, 2006; Goyal and Welch, 2008). [less ▲]Detailed reference viewed: 14 (0 ULg) Vers une typologie de la réflexivitéDemoulin, Laurent E-print/Working paper (2012)Il sera ici question de phénomènes réflexifs qui, au sein d’un texte littéraire, produisent des écarts sensibles et rompent le processus classique de la représentation du réel. Les cas rencontrés sont ... [more ▼]Il sera ici question de phénomènes réflexifs qui, au sein d’un texte littéraire, produisent des écarts sensibles et rompent le processus classique de la représentation du réel. Les cas rencontrés sont étonnamment divers, tant en ce qui concerne leur structure que les effets produits. C’est pourquoi l’on se propose de les classer en six catégories distinctes : réflexivité autotélique, réflexivité poétique, réflexivité linguistique, réflexivité de l’énonciateur, réflexivité conative et réflexivité référentielle. [less ▲]Detailed reference viewed: 21 (0 ULg) NEW CHALLENGES FOR 21ST CENTURY COMPETITION AUTHORITIESPetit, Nicolas E-print/Working paper (2012)This paper discusses challenges for competition authorities in the 21st century. Those challenges were identified on the basis of a statistical review of the articles published since January 2011 in five ... [more ▼]This paper discusses challenges for competition authorities in the 21st century. Those challenges were identified on the basis of a statistical review of the articles published since January 2011 in five major antitrust law journals. The assumption underlying this literature review is that the topics that statistically attract the most the attention from contemporary antitrust scholars are those that will likely constitute the main challenges for 21st century competition authorities. [less ▲]Detailed reference viewed: 10 (0 ULg) Plan Simple de Gestion à vocation de production de bois énergieDubiez, Emilien; Vermeulen, Cédric ; Larzilière, AdélaïdeE-print/Working paper (2012)Les zones d’interventions du Projet Makala présentent des contextes différents liés à l’occupation spatiale coutumière, l’organisation des structures sociales traditionnelles (lignage, clan, chefferie ... [more ▼]Les zones d’interventions du Projet Makala présentent des contextes différents liés à l’occupation spatiale coutumière, l’organisation des structures sociales traditionnelles (lignage, clan, chefferie coutumière), les types de formations végétales présentes dans la zone et les activités principales des populations. L’ensemble de ces éléments structure l’intervention du projet dans son objectif d’aménagement des espaces forestiers périurbains dégradés. Des enquêtes d’identification du finage et des terroirs villageois partenaires ont d’abord été réalisées pour caractériser le contexte social et environnemental d’intervention. Les données recueillies ont constituées la base de travail de la construction du processus d’élaboration des Plans Simples de Gestion (PSG). Le présent document présente les étapes structurant le PSG, l’outil de démarche participatif permettant une appropriation collective du processus et les activités techniques développées pour la reconstitution des espaces forestiers dégradés. [less ▲]Detailed reference viewed: 40 (8 ULg) Lettre d'information trimestrielle N°7 Projet DacefiMeunier, Quentin; Boldrini, Sylvie ; Boukouendji, B. et alE-print/Working paper (2012)Detailed reference viewed: 47 (6 ULg) Organizational and Institutional Arrangements for e-Government : A Preliminary Report on Contemporary IT Management Approaches in US State GovernmentsMarkus, M. Lynne; Jacobson, Dax D.; Bui, Quang Neo et alE-print/Working paper (2012)The success of e-government is believed to depend in part on the organizational and institutional arrangements that governments enact for the management of their IT resources. This paper develops the ... [more ▼]The success of e-government is believed to depend in part on the organizational and institutional arrangements that governments enact for the management of their IT resources. This paper develops the conceptualization of IT management arrangements by considering possible interactions between two dimensions — 1) the organization of IT activities and 2) control over decisions about IT activities (also known as governance) — for each of two categories of IT activities — 1) IT projects (such as website development) and 2) IT services (such as the operation of networks). In addition, the paper provides preliminary empirical evidence obtained from applying this expanded conceptualization in the context of American state governments. Many states appear to employ centralization of IT activities to offset decentralization of IT control and vice versa. Consequently, neither dimension alone provides a good characterization of governmental IT management arrangements. These findings have the potential to enhance our understanding of the barriers to, and enablers of, e-government success. [less ▲]Detailed reference viewed: 28 (10 ULg) Conditional asset allocation: Does Market-Wide Liquidity Matter?Bazgour, Tarik ; Sougné, Danielle ; Heuchenne, Cédric E-print/Working paper (2012)This paper investigates the effect of market-wide liquidity on optimal portfolio allocations across US equity portfolios sorted by size and book-to-market characteristics. In particular, we consider a ... [more ▼]This paper investigates the effect of market-wide liquidity on optimal portfolio allocations across US equity portfolios sorted by size and book-to-market characteristics. In particular, we consider a single-period investor with a relative risk aversion of 5, and use the nonparametric approach of Brandt (1999) to directly express optimal portfolio weights as functions of market-wide liquidity innovations. We find, first, that the effect of market-wide liquidity is a decreasing function of investment horizon. Second, this effect is stronger in allocations in the small stock portfolio and gets weaker as we move towards the large stock portfolio. Third, conditional allocations in risky asset(s) decrease and exhibit shifts towards more liquid and less risky assets as market-wide liquidity worsens. Overall, our results show that allocations based on market-wide liquidity as a signal capture many phenomena that have been identified by researchers in the US market, such as the so-called “flight-to-safety”, flight-to-quality” and “flight-to-liquidity” episodes. Furthermore, in an out-of-sample test, results demonstrate the superior performance of a strategy based on market-wide liquidity compared to a benchmark strategy. [less ▲]Detailed reference viewed: 35 (6 ULg) Higher-Moment Risk Exposures in Hedge FundsLambert, Marie ; Hübner, Georges ; Papageorgiou, NicolasE-print/Working paper (2012)The paper singles out the key roles of US equity skewness and kurtosis in the determination of the market premia embedded in Hedge Fund returns. We propose a conditional higher-moment asset pricing model ... [more ▼]The paper singles out the key roles of US equity skewness and kurtosis in the determination of the market premia embedded in Hedge Fund returns. We propose a conditional higher-moment asset pricing model with location, trading and higher-moment factors in order to describe the dynamics of the Equity Hedge (Market Neutral, Short Selling and Long/Short strategies), Event Driven, Relative Value, and Funds of Hedge Funds styles. The volatility, skewness and kurtosis implied in the US options markets are used by Hedge Fund managers as instruments to anticipate market movements. Managers should adjust their market exposure in response to variations in the implied higher moments. We show that higher-moment premia improve a conditional asset pricing model both in terms of explanatory power (R-squares and Schwarz criterion) and specification errors across all Hedge Fund styles. [less ▲]Detailed reference viewed: 21 (5 ULg) Les chemins de l’… sont pavés de bonnes intentionsChoffray, Jean-Marie E-print/Working paper (2012)C’est un fait connu : « Les Liégeois ont été plus que tous les ans domptés. Néanmoins, ils ont toujours relevé leurs crestes » Citation de Michel de L’Hospital, 1558, gravée au fronton du bâtiment de la ... [more ▼]C’est un fait connu : « Les Liégeois ont été plus que tous les ans domptés. Néanmoins, ils ont toujours relevé leurs crestes » Citation de Michel de L’Hospital, 1558, gravée au fronton du bâtiment de la Cité Administrative de Liège. [less ▲]Detailed reference viewed: 102 (39 ULg) Summer 2012 & The Blues - Chicago Blues Festival , Juin 2012Sacré, Robert E-print/Working paper (2012)Detailed reference viewed: 10 (0 ULg) Social Security, Ageing and Economic IntegrationArtige, Lionel ; Dedry, Antoine; Pestieau, Pierre E-print/Working paper (2012)Detailed reference viewed: 15 (1 ULg) The EMES Approach of Social Enterprise in a Comparative PerspectiveDefourny, Jacques ; Nyssens, MartheE-print/Working paper (2012)Detailed reference viewed: 6 (0 ULg) The economic and environmental feasibility of biogas buses in LiegeMostert, Martine ; Limbourg, Sabine E-print/Working paper (2012)Every day, many of the students at the University of Liege have to drive to the Sart-Tilman village in order to attend their courses. These movements require many journeys that are responsible for the ... [more ▼]Every day, many of the students at the University of Liege have to drive to the Sart-Tilman village in order to attend their courses. These movements require many journeys that are responsible for the emission of harmful particles which have a negative impact on climate or human health. The objective of this paper is therefore to analyze the economic and environmental feasibility of using biogas buses for public transport in Liege. The idea of implementing biogas buses is based on the proposed recycling of organic waste by the company INTRADEL, which manages and treats waste in the region. The project is also in line with the willingness of the city of Liege to demonstrate its commitment to environmental issues. The advantages and disadvantages of biogas buses are developed and compared with those of the current diesel bus fleet of the city. The main conclusion of this study is that, while internalizing external costs due to pollution, the use of biogas buses becomes an attractive option compared with classical diesel buses. Nevertheless, it requires investment and might lead to resistance to change. However, it remains a good solution for the reduction of CO2 emissions that are responsible for the greenhouse effect caused by human beings. It is also a good opportunity to market the city, especially within the framework of the application to host the International Exhibition in 2017. [less ▲]Detailed reference viewed: 42 (6 ULg) Notes éparses d'un lecteur enthousiasteDemoulin, Laurent E-print/Working paper (2012)Compte rendu de "Carnet de Corée", ouvrage de Serge Delaive, mêlant littérature et photographies au sujet de trois voyages effectués en Corée sur les traces de la mère de sa compagne.Detailed reference viewed: 10 (0 ULg) De nieuwe fiscale antimisbruikregel en de gevolgen voor vermogensplanningBourgeois, Marc ; Nollet, Aymeric E-print/Working paper (2012)Detailed reference viewed: 24 (1 ULg) A New Shift-Share MethodArtige, Lionel ; Van Neuss, Leif E-print/Working paper (2012)Detailed reference viewed: 34 (13 ULg) COSMOGRAIL XII: Time delays and 9-yr optical monitoring of the lensed quasar RX J1131-1231Tewes, M.; Courbin, F.; Meylan, G. et alE-print/Working paper (2012)We present the results from 9 years of optically monitoring the gravitationally lensed z=0.658 quasar RX J1131-1231. The R band light curves of the 4 individual images of the quasar are obtained using ... [more ▼]We present the results from 9 years of optically monitoring the gravitationally lensed z=0.658 quasar RX J1131-1231. The R band light curves of the 4 individual images of the quasar are obtained using deconvolution photometry, for a total of 707 epochs. Several sharp quasar variability features strongly constrain the time delays between the quasar images. Using three different numerical techniques, we measure these delays for all possible pairs of quasar images, while always processing the 4 light curves simultaneously. For all three methods, the delays between the 3 close images A, B and C are compatible with being 0, while we measure the delay of image D to be 91 days, with a fractional uncertainty of 1.5% (1 sigma), including systematic errors. Our analysis of random and systematic errors accounts in a realistic way for the observed quasar variability, fluctuating microlensing magnification over a broad range of temporal scales, noise properties, and seasonal gaps. Finally, we find that our time delay measurement methods yield compatible results when applied to subsets of the data. [less ▲]Detailed reference viewed: 14 (5 ULg) Spirit of 66 - Temple des exclusivités ( Mississippi Houndbloods, Alvin Youngblood Hart, Ian Siegal)Sacré, Robert E-print/Working paper (2012)Detailed reference viewed: 16 (0 ULg) Wanted ! Avez-vous vu ces plantes ? La conservation des plantes messicoles dans le cadre du Programme Agroenvironnemental wallonPiqueray, Julien ; Gilliaux, Valentin ; Mahy, Grégory E-print/Working paper (2012)Afin de mener à bien un projet de conservation des plantes messicoles menacées, la Faculté AgroBioTech de Gembloux appelle à diffuser vos observations de terrain au DEMNADetailed reference viewed: 13 (0 ULg) Generational Accounting in Belgium: Fiscal Sustainability at a GlanceDecoster, André; Flawinne, Xavier ; Vanleenhove, PieterE-print/Working paper (2012)Detailed reference viewed: 38 (10 ULg) Les Wallons du WisconsinLempereur, Françoise E-print/Working paper (2012)In the middle of the XIXe century, thousands of Walloon left Belgium to settle in Wisconsin, more than 3100 miles away.Detailed reference viewed: 13 (2 ULg) Do Mutual Fund Investors Still Trust Standard Risk-Adjusted Performance Measures?Bodson, Laurent ; Cave, Arnaud; Sougné, Danielle E-print/Working paper (2012)We study the relationship between the risk-adjusted performance of mutual funds and their money flows (i.e. their subscriptions and redemptions). Testing the most traditional risk-adjusted performance ... [more ▼]We study the relationship between the risk-adjusted performance of mutual funds and their money flows (i.e. their subscriptions and redemptions). Testing the most traditional risk-adjusted performance measures, we identify the ones which best explain the flows of equity, bond or mixed funds. The risk-adjusted performance measures which attract the most the attention from investors are the Information ratios (mono- and multi-factor), the M-squared and the Sharpe ratios (traditional Sharpe ratios and Sharpe MVaR). We may conclude that fund managers who want to maximize their AuM (and, if applicable, increase their AuM based fees) must mainly focus their efforts on improving these standard performance measures. Furthermore, we also demonstrate that the performance-flow relationship is concave then convex. Indeed, amongst the funds with a negative performance, those achieving the worst results are affected by disproportionately high net outflows whereas, on the opposite side of the spectrum, the most successful funds experience much higher capital inflows. [less ▲]Detailed reference viewed: 5 (1 ULg) Ecaussinnes 2012 - Spring Blues FestivalSacré, Robert E-print/Working paper (2012)Compte-rendu du Spring Blues Festival d'Ecaussinnes, le 19 mai 2012Detailed reference viewed: 8 (0 ULg) Renforcer la formation en sciences humaines en réduisant l’histoire-géo : cherchez l’erreur!Jadoulle, Jean-Louis E-print/Working paper (2012)Cette "carte blanche" fait suite à la décision de la Ministre de l'Enseignement obligatoire, Marie-Dominique Simonet, de réviser les grilles - horaires de l'enseignement qualifiant. Elle reprend la teneur ... [more ▼]Cette "carte blanche" fait suite à la décision de la Ministre de l'Enseignement obligatoire, Marie-Dominique Simonet, de réviser les grilles - horaires de l'enseignement qualifiant. Elle reprend la teneur d'une lettre qui lui a été adressée et qui a été co-signée par plus de 140 enseignants, formateurs d'enseignants et membres de la société civile. [less ▲]Detailed reference viewed: 16 (1 ULg) Do Mutual Fund Investors Still Trust Standard Risk-Adjusted Performance Measures?Sougné, Danielle ; Bodson, Laurent ; Cave, ArnaudE-print/Working paper (2012)We study the relationship between the past performance of mutual funds and their capital flows (i.e. their subscriptions and redemptions). Testing the most traditional risk-adjusted performance measures ... [more ▼]We study the relationship between the past performance of mutual funds and their capital flows (i.e. their subscriptions and redemptions). Testing the most traditional risk-adjusted performance measures, we identify the ones which best explain the flows of US equity mutual funds. [less ▲]Detailed reference viewed: 26 (4 ULg) A Global Approach to Mutual Funds Market Timing AbilitySougné, Danielle ; Bodson, Laurent ; Cavenaile, LaurentE-print/Working paper (2012)In this paper, we globally investigate market timing abilities of mutual fund managers from the three perspectives: market return, market-wide volatility and aggregate liquidity. We propose a new ... [more ▼]In this paper, we globally investigate market timing abilities of mutual fund managers from the three perspectives: market return, market-wide volatility and aggregate liquidity. We propose a new specification to study market timing. Instead of considering an average market exposure for mutual funds, we allow mutual fund market betas to follow a random walk in the absence of market timing ability. As a consequence, we capture market exposure dynamics which is really due to manager market timing skills while allowing dynamics to come from other sources than market timing. We find that on average 6% of mutual funds display return market timing abilities while this percentage amounts to respectively 13% and 14% for volatility and liquidity market timing. We also analyze market timing by investment strategies and for surviving and dead funds. Dead fund exhibit lower volatility and liquidity timing skills than live funds. [less ▲]Detailed reference viewed: 64 (4 ULg) Traffic Situation Assessment and Intervention Strategy of a Collision Avoidance System based on Galileo Satellite PositioningChristen, Fréderic ; Ewald, Christian; Eckstein, Lutz et alE-print/Working paper (2012)Nowadays, collision avoidance systems (CAS) are an intensive research topic since the majority of all traffic accidents are collisions that are caused due to inattention or unadjusted driving behavior of ... [more ▼]Nowadays, collision avoidance systems (CAS) are an intensive research topic since the majority of all traffic accidents are collisions that are caused due to inattention or unadjusted driving behavior of the driver. Up to date prototypic CAS are based on on-board environmental sensors, such as camera or radar systems, that scan the vehicle's surrounding environment in order to assess the situation's hazardousness. The functionality of the used sensors under varying environmental conditions and the limited sensor covering area require an enormous effort to ensure a reliable detection of obstacles, and thus limit the application of the systems. In order to expand the operating field of such systems, a Galileo-based CAS will be developed within the project ‘Galileo above’ (application centre for ground based traffic). This advanced driver assistance system (ADAS) detects surrounding vehicles that are on collision course and reacts autonomously, if the driver does not intervene to avoid the crash. For this purpose the system initiates an emergency stop and/or an emergency steering maneuver. For the development of the CAS the Galileo test centre automotiveGATE in Aldenhoven, Germany will be used. On this test area pseudolites will be installed which provide Galileo-like navigation signals. Thus, the development respectively tuning of Galileo-based vehicle systems will be enabled, so as to have them available on the market when the Galileo satellite system reaches its full operational capability (FOC). The focus of this paper is on the traffic situation assessment and intervention strategy of the CAS. This includes the perception and analysis of the driving situation, the detection of potential collision situation, the definition of an adequate system reaction and the planning of an evasion trajectory. Furthermore, an outlook on the model predictive control for longitudinal and/or lateral control (braking and/or steering maneuver) will be presented. [less ▲]Detailed reference viewed: 9 (2 ULg) Institutional Change and Legislative Stability: Explicit and Contested Decision-Making in the EU Council (1995-2010)Van Aken, Wim E-print/Working paper (2012)In contrast to general expectations the growth of EU membership as well as European treaty reform has not had any significant impact on the Council’s overall legislative and roll call activity. On the ... [more ▼]In contrast to general expectations the growth of EU membership as well as European treaty reform has not had any significant impact on the Council’s overall legislative and roll call activity. On the basis of a new dataset representing the total population of public roll calls and recorded votes in the Council this paper explains why the EU Council has been so successful in guaranteeing legislative and roll call stability between 1995 and 2010. The quantitative and qualitative analysis finds that frontloading legislation, changing voting behaviour, reinforcement of existing coalition patterns and the successful adjustment of newer Member States to the EU Council have contributed to the EU Council’s decision-making capacity during the observed 16 years. In explaining the apparent contradiction between institutional change and the Council’s legislative stability this paper contributes to our knowledge of the functioning, the decision-making processes and the geography of contestation in the EU Council. [less ▲]Detailed reference viewed: 36 (1 ULg) Extensions of superalgebras of Krichever-Novikov typeKreusch, Marie E-print/Working paper (2012)An explicit construction of central extensions of Lie superalgebras of Krichever-Novikov type is given. In the case of Jordan superalgebras related to the superalgebras of Krichever-Novikov type we ... [more ▼]An explicit construction of central extensions of Lie superalgebras of Krichever-Novikov type is given. In the case of Jordan superalgebras related to the superalgebras of Krichever-Novikov type we calculate a 1-cocycle with coefficients in the dual space. [less ▲]Detailed reference viewed: 38 (9 ULg) The size and book-to-market effects revisitedLambert, Marie ; Hübner, Georges E-print/Working paper (2012)Detailed reference viewed: 12 (2 ULg) Briefe an CasanovaRoggendorf, Cécile de; Viehöver, Vera E-print/Working paper (2012)Detailed reference viewed: 9 (0 ULg) L'économie sociale et coopérative dans la revue du CIRIEC, Annales de l'économie publique, sociale et coopérativeFecher-Bourgeois, Fabienne ; Lévesque, BenoîtE-print/Working paper (2012)Detailed reference viewed: 20 (7 ULg) D'une Internationale à l'autre : enquête sur les socialistes européens et le monde des affairesGeuens, Geoffrey E-print/Working paper (2012)Detailed reference viewed: 4 (2 ULg) SOUTHERN BLUES NIGHT Heerlen, Hollande) 2012Sacré, Robert E-print/Working paper (2012)Detailed reference viewed: 7 (0 ULg) Rossano Rosi: triangle amoureux et paternitéDemoulin, Laurent E-print/Working paper (2012)Compte rendu du roman de Rossano Rosi Stabat Pater paru aux Impressions nouvelles en mars 2012.Detailed reference viewed: 15 (2 ULg) Dans le discontinu de la vieDemoulin, Laurent E-print/Working paper (2012)Compte rendu du roman de Caroline Lamarche La Chienne de Naha paru chez Gallimard en janvier 2012.Detailed reference viewed: 12 (1 ULg) Newsletter n° 5 - DACEFI 2Meunier, Quentin; Moumbogou, Carl; Angwé, A. et alE-print/Working paper (2012)Detailed reference viewed: 20 (4 ULg) EchecsDemoulin, Laurent E-print/Working paper (2012)Echecs est un roman inédit de Jean-Philippe Toussaint, antérieur à La Salle de bain. Il est ici édité avec un apparat critique: variantes et notes critiques.Detailed reference viewed: 9 (1 ULg) Motionless Memory and Slow Remembering. Towards an Historiographic Understanding of the Imperceptible Movement in 48 by Susana de Sousa DiasHamers, Jérémy E-print/Working paper (2012)Detailed reference viewed: 26 (4 ULg) Oxford Centre for Evidence‐Based Medicine 2011 Levels of Evidence ‐ Traduction françaiseOCEBM Levels of Evidence Working Group; Durieux, Nancy ; Pasleau, Françoise et alE-print/Working paper (2012)Detailed reference viewed: 72 (3 ULg) Heinrich Rickert's Philosophy of History And Its Reception 1896-1936: An Annotated BibliographyDewalque, Arnaud E-print/Working paper (2012)Annotated bibliography of the main philosophical texts which testify the reception of Heinrich Rickert's much-discussed view on historical sciences from 1896 to 1936.Detailed reference viewed: 44 (2 ULg) Diversité linguistique et apprentissage des langues en milieu scolaire.Blondin, Christiane ; Goffin, Christelle ; Fagnant, Annick E-print/Working paper (2012)Detailed reference viewed: 59 (4 ULg) How to optimally load a set of containers into an aircraftSchyns, Michael ; Limbourg, Sabine ; Laporte, GilbertE-print/Working paper (2012)Detailed reference viewed: 35 (7 ULg) The TRAPPIST survey of southern transiting planets. I. Thirty eclipses of the ultra-short period planet WASP-43 bGillon, Michaël ; Triaud, A H M J; Fortney, J. J. et alE-print/Working paper (2012)We present twenty-three transit light curves and seven occultation light curves for the ultra-short period planet WASP-43 b, in addition to eight new measurements of the radial velocity of the star ... [more ▼]We present twenty-three transit light curves and seven occultation light curves for the ultra-short period planet WASP-43 b, in addition to eight new measurements of the radial velocity of the star. Thanks to this extensive data set, we improve significantly the parameters of the system. Notably, the largely improved precision on the stellar density (2.41+-0.08 rho_sun) combined with constraining the age to be younger than a Hubble time allows us to break the degeneracy of the stellar solution mentioned in the discovery paper. The resulting stellar mass and size are 0.717+-0.025 M_sun and 0.667+-0.011 R_sun. Our deduced physical parameters for the planet are 2.034+-0.052 M_jup and 1.036+-0.019 R_jup. Taking into account its level of irradiation, the high density of the planet favors an old age and a massive core. Our deduced orbital eccentricity, 0.0035(-0.0025,+0.0060), is consistent with a fully circularized orbit. We detect the emission of the planet at 2.09 microns at better than 11-sigma, the deduced occultation depth being 1560+-140 ppm. Our detection of the occultation at 1.19 microns is marginal (790+-320 ppm) and more observations are needed to confirm it. We place a 3-sigma upper limit of 850 ppm on the depth of the occultation at ~0.9 microns. Together, these results strongly favor a poor redistribution of the heat to the night-side of the planet, and marginally favor a model with no day-side temperature inversion. [less ▲]Detailed reference viewed: 26 (13 ULg) Le design du système de contrôle de gestion dans les PMI tunisiennes: une modélisation contingenteGhorbel, Jihene ; Van Caillie, Didier E-print/Working paper (2012)A l'heure actuelle, il existe relativement peu de recherches qui traitent du système de contrôle de gestion des PME, spécialement dans le contexte tunisien, malgré leur importance économique. La présente ... [more ▼]A l'heure actuelle, il existe relativement peu de recherches qui traitent du système de contrôle de gestion des PME, spécialement dans le contexte tunisien, malgré leur importance économique. La présente communication vise dès lors à élaborer un modèle théorique expliquant le design du système de contrôle de gestion dans les PMI tunisiennes, au départ d'une analyse de la littérature portant spécifiquement soit sur les PMI tunisiennes, soit sur le système de contrôle de gestion de la PME. Cette étude est réalisée en privilégiant deux angles d'analyse particulièrement importants au vu du contexte tunisien, à savoir la taille de l'entreprise et son positionnement sur le cycle de vie. [less ▲]Detailed reference viewed: 38 (26 ULg) Accrued Pension Rights in Belgium: Microsimulation of ReformsJousten, Alain ; Perelman, Sergio ; Tarantchenko, Ekaterina et alE-print/Working paper (2012)Detailed reference viewed: 15 (5 ULg) Les enjeux prospectifs wallons à la lumière d’un dispositif participatifGuyot, Jean-Luc; Rieppi, Stéphane ; Van Cutsem, Michaël et alE-print/Working paper (2012)La prospective a souvent recours à la démarche participative. Fréquemment, dans son travail analytique, le prospectiviste fait intervenir les acteurs concernés par le système qu'il examine, que ceux-ci ... [more ▼]La prospective a souvent recours à la démarche participative. Fréquemment, dans son travail analytique, le prospectiviste fait intervenir les acteurs concernés par le système qu'il examine, que ceux-ci opèrent dans ce système ou qu’ils possèdent une expertise particulière par rapport à celui-ci. Dans la majorité des cas, cette intervention s’effectue au cours de l’exercice prospectif. Le présent working paper expose un autre type de situation : l’intervention et la participation des acteurs se placent ici en amont du travail prospectif, au moment de la délimitation des enjeux et des thématiques à considérer dans le cadre du développement d’un programme de recherche. L'expérience présentée par les auteurs, bien qu’elle recoure à l’utilisation d’un outil relativement classique en prospective, à savoir le Delphi, revêt un aspect original. Développée auprès de deux publics distincts, des équipes de recherche d’une part et des membres de l’administration wallonne, d’autre part, elle a permis d’identifier un certain nombre d’enjeux prospectifs majeurs pour la Wallonie et de définir des objets de recherche en rapport avec ces derniers. L'identification et la présentation de ces enjeux fait l’objet du présent texte. Dans un premier temps, celui-ci se propose de décrire le processus d’identification de ces enjeux et, dans un second temps, d’expliciter la nature de ceux-ci. [less ▲]Detailed reference viewed: 34 (3 ULg) Module 3, techniques de reconstitution forestièreDubiez, Emilien; Vermeulen, Cédric E-print/Working paper (2012)Detailed reference viewed: 25 (4 ULg) Measuring Downside and Extreme Risk Allocation in Equity Hedge FundsLambert, Marie E-print/Working paper (2012)Detailed reference viewed: 21 (3 ULg) Internet-Based Investing at the Edge of ChaosChoffray, Jean-Marie E-print/Working paper (2012)This paper presents a simple, seven-step approach, to surviving on World Street: an investment environment characterized by high frequency trading system; over leveraged shadow entities and hedge funds ... [more ▼]This paper presents a simple, seven-step approach, to surviving on World Street: an investment environment characterized by high frequency trading system; over leveraged shadow entities and hedge funds; flash crashes, incompetent management, reverse merger frauds, dot bubble 2.0 IPOs and stealth central banks’ actions. Its goal is to help you design efficient investment strategies while protecting your assets. It is based on a personal research conducted over the last ten years, involving hundreds of observations, investment simulations and actual decisions. [less ▲]Detailed reference viewed: 214 (37 ULg) Dynamic Trading Strategies of Equity Hedge Funds: Empirical evidence on how they adapt to market conditionsLambert, Marie ; Muller, Aline ; Babaei, Hamid E-print/Working paper (2012)Detailed reference viewed: 49 (15 ULg) 1 2 3 4 5