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See detailA Receding Horizon Approach to Incorporate Frequency Support into the AC/DC Converters of a Multi-Terminal DC Grid
Papangelis, Lampros ULg; Panciatici, Patrick; Debry, Marie-Sophie et al

in Electric Power Systems Research (2017)

This paper proposes a novel control scheme for provision of frequency support among asynchronous AC areas through HVDC grids. It is based on local controllers, each acting on a voltage source converter ... [more ▼]

This paper proposes a novel control scheme for provision of frequency support among asynchronous AC areas through HVDC grids. It is based on local controllers, each acting on a voltage source converter, using local measurements only, and supporting frequency of the adjacent AC area after a significant disturbance. The new discrete control is combined with the existing DC voltage droop technique. The formulation, inspired of Receding Horizon Control, enables providing to the AC area the desired frequency support, while at the same time taking into account various constraints, such as maintaining the DC voltage between secure operating limits. Examples obtained from a test system with a five-terminal DC network connecting two asynchronous areas demonstrate the effectiveness and robustness of the proposed control scheme in various scenarios, with emphasis on component failures. [less ▲]

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See detailReinforcement Learning for Electric Power System Decision and Control: Past Considerations and Perspectives
Glavic, Mevludin ULg; Fonteneau, Raphaël ULg; Ernst, Damien ULg

in The 20th World Congress of the International Federation of Automatic Control, Toulouse 9-14 July 2017 (2017, July)

In this paper, we review past (including very recent) research considerations in using reinforcement learning (RL) to solve electric power system decision and control problems. The RL considerations are ... [more ▼]

In this paper, we review past (including very recent) research considerations in using reinforcement learning (RL) to solve electric power system decision and control problems. The RL considerations are reviewed in terms of speci c electric power system problems, type of control and RL method used. We also provide observations about past considerations based on a comprehensive review of available publications. The review reveals the RL is considered as viable solutions to many decision and control problems across di erent time scales and electric power system states. Furthermore, we analyse the perspectives of RL approaches in light of the emergence of new-generation, communications, and instrumentation technologies currently in use, or available for future use, in power systems. The perspectives are also analysed in terms of recent breakthroughs in RL algorithms (Safe RL, Deep RL and path integral control for RL) and other, not previously considered, problems for RL considerations (most notably restorative, emergency controls together with so-called system integrity protection schemes, fusion with existing robust controls, and combining preventive and emergency control). [less ▲]

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See detailFreeplay-induced limit cycle oscillation mitigation using linear and nonlinear tuned vibration absorbers
Verstraelen, Edouard ULg; Kerschen, Gaëtan ULg; Dimitriadis, Grigorios ULg

in Proceeding of the IFASD 2017 Conference (2017, July)

Structural nonlinearities such as freeplay in control surface bearings and actuators or in connections between wings and external payloads sometimes lead to aeroelastic limit cycle oscillations at ... [more ▼]

Structural nonlinearities such as freeplay in control surface bearings and actuators or in connections between wings and external payloads sometimes lead to aeroelastic limit cycle oscillations at airspeeds lower than the linear flutter speed of the aircraft. In parallel, numerous studies demonstrated the potential of linear and nonlinear tuned vibration absorbers to increase the flutter speed of linear and continuously hardening aeroelastic systems such as two-degree- of-freedom wings or long span bridges. In this work, the effect of linear and nonlinear tuned vibration absorbers is studied on a wing with pitch plunge and control surface deflection degrees of freedom and with freeplay in pitch. Depending on the tuning of the linear absorber, the linear flutter speed of the system can be increased by 10% or the onset of limit cycle oscillations due to the freeplay can be delayed by 7.7% and their amplitude can be significantly decreased. The addition of cubic hardening forces on the absorber can further decrease the limit cycle amplitude in a limited airspeed range at the cost of an increase in limit cycle amplitude in another airspeed range. Conversely, the addition of a freeplay hardening force on the absorber can decrease the limit cycle amplitude without any detrimental effect. [less ▲]

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See detailThe grammaticalization of Russian taxonomic nouns
Kolyaseva, Alena ULg

Conference (2017, July)

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See detailSpecular sets
Berthé, Valérie; De Felice, Clelia; Delecroix, Vincent et al

in Theoretical Computer Science (2017), 684

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See detailcopycat: Testing Differential Treatment of New Transport Protocols in the Wild
Edeline, Korian ULg; Kühlewind, Mirja; Trammell, Brian et al

in Applied Networking Research Workshop (2017, July)

Recent years have seen the development of multiple transport solutions to address the ossification of TCP in the Internet, and to ease transport-layer extensibility and deployability. Recent approaches ... [more ▼]

Recent years have seen the development of multiple transport solutions to address the ossification of TCP in the Internet, and to ease transport-layer extensibility and deployability. Recent approaches, such as PLUS and Google's QUIC, introduce an upper transport layer atop UDP; their deployment therefore relies on UDP not being disadvantaged with respect to TCP by the Internet. This paper introduces copycat, a generic transport protocol testing tool that highlights differential treatment by the path in terms of connectivity and QoS between TCP and a non-TCP transport protocol. copycat generates TCP-shaped traffic with custom headers, and compares its performance in terms of loss and delay with TCP. We present a proof-of-concept case study (UDP vs. TCP) in order to answer questions about the deployability of current transport evolution approaches, and demonstrate the extent of copycat's capabilities and possible applications. While the vast majority of UDP impairments are found to be access-network linked, and subtle impairment is rare, middleboxes might adapt to new protocols that would then perform differently in the wild compared to early deployments or controlled environment testing. [less ▲]

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See detailWEATHERING ON THE DEVONIAN SLATES AND CHARACTERIZATION OF A BENTONITE LAYER IN THE WESTERWALD (GERMANY)
Fontaine, François ULg; Hamaekers, Helen; Hoffmann, Andreas et al

Conference (2017, July)

The Westerwald region is one of the largest and oldest clay mining areas of Germany. Those deposits were formed during the Eocene and Oligocene as a result of the weathering, erosion and redeposition of ... [more ▼]

The Westerwald region is one of the largest and oldest clay mining areas of Germany. Those deposits were formed during the Eocene and Oligocene as a result of the weathering, erosion and redeposition of Devonian rocks. During the Miocene, intense volcanic activities led to a large basalt cover, protecting the clays from the erosion. The two main goals of this study are first to improve the knowledge on the weathering processes of the Devonian slates that led to the current setting of those clay deposits by studying the mineralogical and chemical composition of the clays with depth. The second goal is to characterize a bentonite layer underneath the Miocene basalt cover using quantitative X-ray diffraction, chemical analysis, BET, cation exchange capacity and scanning electron microscope. A 20 meter deep quarry mining the Devonian bedrock in southern Westerwald has been sampled on its entire depth. The XRD results show no significant variations of the mineralogy with depth, except for the phyllosilicates. The minerals of the < 2 μm fraction are illite, kaolinite, smectite and mixed-layers minerals (vermiculite-chlorite and illite-chlorite). The proportions of the minerals in the mixed-layers chlorite-vermiculite vary with depth. At the bottom of the quarry, the proportion of vermiculite is very low while in the top, the proportion of vermiculite is higher. This is explained by the degree of the weathering, logically more intense at the top of the quarry. Trace elements compositions are currently being investigated. A 3 meter thick greenish to brownish bentonite layer has been found in the eastern part of the Westerwald region. The XRD performed on different samples of this bentonite shows a relatively heterogeneous composition: montmorillonite (60-80%), kaolinite (5-12%), illite (0-7%), goethite (2-15%), talc (0-10%), K-feldspars (0-7%), plagioclase (0-4%) and traces of amphibole and pyroxene. This bentonite is probably the result of the weathering of volcanic ashes. Since there are not many outcrops of this bentonite layer, its spatial distribution is studied by drilling. [less ▲]

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See detailStable isotopes reveal effects of environmental changes on ecological niches of Iphimediidae amphipods
Michel, Loïc ULg; d'Udekem d'Acoz, Cédric; Frederich, Bruno ULg et al

Poster (2017, July)

When faced with environmental changes, organisms are expected to have some intrinsic ability to adapt through ecological plasticity. However, this process is still poorly understood in many Antarctic ... [more ▼]

When faced with environmental changes, organisms are expected to have some intrinsic ability to adapt through ecological plasticity. However, this process is still poorly understood in many Antarctic invertebrates. Here, we focused on Iphimediidae amphipods, as this widely distributed family shows important ecological diversity. In total, 248 amphipods (19 species) from two widely different zones (the West Antarctic Peninsula, or WAP, and Adélie Land, AL) were studied to elucidate how environment can influence ecological niche parameters. Ecological niches were explored using stable isotope ratios of carbon and nitrogen and the SIBER approach (Jackson et al., 2011). The isotopic niche of the whole amphipod assemblage was wider in WAP than in AL. This was true for both total (proxy of the whole range of resources exploited by animals) and the core (proxy of the most commonly used resources) isotopic niches. The ratio between total and core isotopic niches was smaller in WAP than in AL (4.13 vs. 5.74), suggesting that in WAP, animals commonly use a greater relative percentage of the resources to which they have access. Niche modelling at the specific level revealed that this trend was not found in all taxa. For example, niches of Gnathiphimedia sexdentata and Iphimediella microdentata were bigger in WAP than in AL, following the general pattern. On the other hand, niches of Echiniphimedia echinata and E. hodgsoni had the same width in both areas. Moreover, relative niche overlap between these two species was much higher in WAP (42%) than in AL (20%). Our results indicate that the widely different environmental conditions encountered by the animals in these two zones clearly influence their ecology. Overall, Iphimediidae amphipods tend to exploit more resources in WAP, i.e. in the zone where impacts of global change (temperature increase, sea ice cover decrease) are the strongest. Niche overlap between some closely related (i.e. congeneric) species was also more important in WAP. Ultimately, environmental changes in this region might reinforce these trends, which might lead to competition and perturb amphipod community structure. This research was funded by the Belgian Federal Science Policy Office (BELSPO) in the framework of the vERSO and RECTO projects. [less ▲]

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See detailThe role of Gender, Race, and Class in Transnational Political Movements: Mexican and Colombian Women Engaging in Homeland Politics from Europe’s Capital
Lara-Guerrero, Larisa; Vivas Romero, Maria ULg

Conference (2017, June 30)

Drug trafficking is a mounting security problem in Latin America, specifically for the primary producers of narcotics in the region: Mexico and Colombia. The security concern from both countries has ... [more ▼]

Drug trafficking is a mounting security problem in Latin America, specifically for the primary producers of narcotics in the region: Mexico and Colombia. The security concern from both countries has triggered the political and social mobilization of Mexican and Colombian migrants from abroad many of them from the Global City of Brussels. This paper unpacks the motivations and dynamics behind transnational political activism organized by Mexican and Colombian women living in Brussels. By integrating and revising insights from social movements theories, political transnationalism from migration studies and intersectionality studies, this paper elaborates on the role of migrant women organizing and sustaining transnational political movements to change the political conditions of their countries of origin. The ethnographic evidence presented in this paper reveals the importance to recognize the individual level in the analysis of transnational movements. Women are cognitive actors with political ideals and emotions whose political activism is highly influenced by social categorizations such as gender, race, class, and generation. [less ▲]

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See detailSoil Acidification in Southern China: Spatio-temporal Evolution and Effects on Phosphorus Availability
Zhou, Xiaoyang ULg

Doctoral thesis (2017)

Rapid industrial development and intensive agriculture induced serious soil degradation in recent decades worldwide and specifically in China. In cropland, soil acidification and nutrient deficiency are ... [more ▼]

Rapid industrial development and intensive agriculture induced serious soil degradation in recent decades worldwide and specifically in China. In cropland, soil acidification and nutrient deficiency are often associated with increased use of nitrogen (N) fertilizers. Soil acidification can lead to reduction of phosphorus (P) availability, even though with high inputs of P fertilizer. The studies presented in the thesis deal with spatio-temporal evolution of soil pH in different soil types and land uses in southern China and effects of soil acidification on soil P availability. Evolution of inorganic P fractions in Red Soil was characterized upon fertilization trials, as a response to long-term fertilization and soil acidity changes. The first focus of the thesis deals with spatio-temporal evolution and main factors of soil acidification in different soil types, parent materials and land uses of Southern China. Firstly, data from 20 monitoring sites under 25-year fertilization on Paddy Soil were investigated to research changes of pH. Paddy Soil pH significantly declined from 1988-1998, then stabilized from 1998-2013 with conventional fertilization. Chemical N fertilization, manure application, soil available N and total N increases were significantly correlated with soil pH. Secondly, changes of pH in Red Soil and Paddy Soil were assessed in 32 monitoring sites of Hunan Province (Southern China) under 10-year fertilization in order to analyze soil acidification in different soil types and agro-systems. Soil pH decline was observed in Paddy Soils under rice-vegetable rotation but not observed in Paddy Soil under continuous cropping with rice. Soil pH significantly declined in Red Soil with high initial soil pH. Thirdly, spatio-temporal characteristics of soil pH were investigated by comparison of soil pH between 1982 and 2014 in Qiyang County (Hunan Province). Average topsoil pH declined of 0.58 units between the two surveys. Soil pH in the south was lower than in the north both in 1982 and 2014. Land use and parent materials are the main drivers of differences in the soil pH changes in Qiyang County. Soil pH declined significantly in forest and upland crop over non-alkaline parent materials during 1982-2014 period. Chemical N fertilizer application can have generated 12-42 kmol H+ ha-1yr-1, which is much higher than removal by crop harvest. Reduction of chemical N fertilization and return of straws to field should be conducted to reduce H+ production and supplement base cations in Qiyang County. The second approach studied evolution of inorganic P fractions in Red Soil under 25-year fertilization, and available P and inorganic P fractions responses to various soil acidity levels. Inorganic P fractions increased under P fertilization from 1990-2015, especially Ca2-P, Ca8-P and Al-P, but inorganic P fractions significantly decreased without P fertilization. Contributions of soil properties (SOC, C:P ratio and N:P ratio) and cumulative P apparent balance (CPAB) to inorganic P fractions were ≥ 95%, while interaction of CPAB and soil properties made greater contributions than did any single factor. Soil dissolved inorganic P (DIP) decreased with rising pH value, and a minimum DIP was observed between pH 5.5 and 6.5. Olsen-P, Ca-P and Al-P increased significantly with pH between 3.4 and 5.0. Soil with pH <5.0 P availability was much lower than soil with pH ≥5.0. Managing soil acidity is a key issue regarding availability of P in Red Soil of China and our results suggest that at least a pH of 5.0 should be targeted. [less ▲]

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See detailPlant traits variability within and among populations in the context of calcareous grassland restoration
Harzé, Mélanie ULg

Doctoral thesis (2017)

In Western Europe, abandonment of traditional forms of agriculture has caused the fragmentation of semi-natural grasslands, affecting ecosystems functioning as well as population survival. Habitat ... [more ▼]

In Western Europe, abandonment of traditional forms of agriculture has caused the fragmentation of semi-natural grasslands, affecting ecosystems functioning as well as population survival. Habitat restoration has become a crucial aspect of grasslands conservation, and one of the main issues is evaluating restoration success and setting appropriate criteria to do so. Indicators used to judge whether a restoration has been successful may concern a wide range of organisms. They may be defined at different geographical scales and may concern various levels of biodiversity organization. Among them, population parameters are less represented despite their usefulness. To consider restoration as a success, restored populations of targeted species should demonstrably possess characteristics allowing their dispersal, reproduction, growth and adaptation to the environment. In this thesis, the use of plant population parameters for evaluating grassland restoration was assessed based on a literature review. Then, the success of calcareous grassland restoration was determined regarding colonization of restored grasslands by five calcareous grasslands species; Helianthemum nummularium, Hippocrepis comosa, Potentilla tabernaemontani, Sanguisorba minor and Scabiosa columbaria. Population establishment and intra-specific functional trait variability in response to the environment were observed and compared among restored and reference populations of those species, through field inventories and in-situ traits measurements in calcareous grasslands of south Belgium. Moreover, a glasshouse experiment was set-up with the aim to evaluate the intra-specific variability in response to drought stress in reference populations of P. tabernaemontani. The results indicated that population parameters were less well studied for evaluating grassland restoration success compared to indicators related to ecosystems and communities. The population parameters used to assess the success of calcareous grassland restoration showed that the study species colonized restored sites and established new populations. The fitness of the restored populations was very high. High intra-specific trait variability was highlighted at a very local scale in the reference habitat. Individuals exhibited high leaf dry matter content (LDMC), low specific leaf area (SLA) and low vegetative height in relation to low soil depth and high potential incident radiation (PDIR). These environmental variables are possibly linked to the availability of soil moisture. Further, the relationship between traits and environmental variables was not always consistent in restored sites. However, the intra-specific variability of plant traits was similar in the reference and restored grasslands. Finally, the findings from the glasshouse experiment suggested that individuals originating from drier parts of calcareous grasslands better survive drought stress.   The overall conclusion of this thesis is rather optimistic concerning restored populations of the five specialist plant species studied, specifically regarding their colonization, persistence and response to the environment or to potential climate change. The conclusions must, however, be modified depending on the reference ecosystem used as a model. This approach has to be integrated into a multi-scales and a multi-species approach to fully evaluate restoration outputs. Yet, this thesis has contributed to the understanding of population responsiveness to habitat restoration, as well as to the evaluation of restoration success of calcareous grasslands in Belgium. [less ▲]

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See detailThe art to talk on immigration: a state of emergency
Da Silva, Amanda Carolina ULg

Conference (2017, June 29)

This paper intend to present the results of the state of emergency project. The project started in 2014 with a simple question: how researchers that work in immigration can communicate with civil society ... [more ▼]

This paper intend to present the results of the state of emergency project. The project started in 2014 with a simple question: how researchers that work in immigration can communicate with civil society outside the traditional academic channels? It is not only a matter of popularization of academic research, but mainly brings researchers into society, far from the academic walls. The answer to this question was the art and the spaces of culture. Art, and also cultural spaces have enormous potential, its could bring together different social groups and help researchers to be in society, and making their research accessible. In the society, debates on immigration are mostly dominated by media and political representations, what is also polarizing societies between solidarity and anti-immigration movement's. Therefore, the presence of researchers to discuss the immigration issue in society has become urgent. The state of emergency project had as a bases my research, “The borders of Nord-Pas-deCalais” (2014), and brought together two dancers, two acrobats, a scene director and a plastic artist. The project started from the assumption that art is a collective production, but artistic intention started with the individual consciousness on the issue the artist is focusing. It was adopted the artistic improvisation method to develop a spectacle and other tolls. In order to incorporate research on immigration into artistic production it was necessary to present and to appropriate the artists of basic concepts, but also carry out a fieldwork, that was developed during a month at the French border (Calais city). The methodology adopted by the artists consisted in a fieldwork. The project took two years to be concluded. The result was a dance spectacle, “Dites a ma mère que je suis la”, and a hybrid form of workshop that mixes the artistic and the methods of immigration research. I contrast, I developed during the project a multi-sited ethnography whit the artists. Where the main objective was to understand which impact the scientific knowledge on the issue could produce in artist's way to see immigration, and how this new approach could change the researcher and artist productions. [less ▲]

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See detailCo-producing sociotechnical solutions in difficult times: the art of governing nuclear wastes in France
Parotte, Céline ULg; Delvenne, Pierre ULg

Conference (2017, June 29)

Radioactive wastes and their management are posing pressing political and epistemic issues to modern societies such as, for instance, how shall we design sociotechnical solutions to deal with an object ... [more ▼]

Radioactive wastes and their management are posing pressing political and epistemic issues to modern societies such as, for instance, how shall we design sociotechnical solutions to deal with an object with a half-life of more than 100.000 years? This paper’s starting point is the so-called “participatory turn” in the nuclear waste management (NWM) in France, when tensions appeared concerning claims of epistemic authority of national nuclear agencies. In 1990, in the aftermath of violent contestations and citizen mobilization in four Departments, the then Prime Minister of France, Michel Rocard, decided to impose a one-year moratorium on the research conducted by the national nuclear waste management organization (ANDRA). A not so well-known parliamentary technology assessment (PTA) institution, OPECST (the French Office Parlementaire d’Evaluation des Choix Scientifiques et Technologiques), was called to the rescue to clear up a difficult situation and to restore trust between state and scientific agencies and a critical population. We find that OPECST played a surprisingly central role in defining the French NWM program. [less ▲]

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See detailQUALITY IMPROVEMENT OF POTATO STEAMED BREAD USING FOOD HYDROCOLLOIDS
Liu, Xingli ULg

Doctoral thesis (2017)

Nowadays, there is an increasing interest for composite or gluten-free products due to some economic, nutritional reasons or the number of the celiac patient. The estimated prevalence of Celiac disease is ... [more ▼]

Nowadays, there is an increasing interest for composite or gluten-free products due to some economic, nutritional reasons or the number of the celiac patient. The estimated prevalence of Celiac disease is about 1% of the general population, and it affects persons of any age, race, and ethnic group. Steamed bread is a traditional staple food of China, and has been consumed for at least 2000 years, taking up almost 40% of wheat consumption, and the popularity is increasing around the world. However, most traditional wheat steamed bread lack essential nutrients, including lysine, dietary fiber, vitamins, and minerals, etc. Therefore, the use of composite flour for steamed bread making has attracted great attention. Potato (Solanum tuberosum) is one of the most widely planted vegetables worldwide and is the only tuber used as a major food crop. Potato has a balanced amino acid composition, high total vitamin and mineral levels, and also contains phytochemicals such as polyphenols, polyamines, and carotenoids. However, the replacement of wheat flour is a major challenge for food technologist to produce the steamed bread with desirable quality and technological properties because that gluten is important to retain gas to obtain the desired volume and texture in a dough system. It is essential to form a strong protein network required for the desired viscoelasticity, and the easiest way to ensure the viscoelasticity properties is via the use of food hydrocolloids. Therefore, the aim of this work was to study the quality improvement of potato steamed bread using food hydrocolloids. Firstly, the influence of potato flour on dough rheological properties and quality of steamed bread showed that the dough stability and specific volume of steamed bread were significantly decreased with the potato flour proportions increasing. Then we carried out the comparative study of the nutritional quality of steamed and baked breads from four potato cultivars because that the steamed and baked breads were two type of staple food in eastern and western countries, respectively. The results showed that potato flour addition increased the contents of dietary fiber, potassium, vitamin C, and total polyphenol contents and antioxidant activity. Hongmei was the optimum choose of the studied four cultivars, followed by Blue Congo, Shepody, and Atlantic, in terms of nutritional value. For the same cultivar, the nutritional value of steamed bread was higher than that of baked bread. Secondly, the effect of different food hydrocolloids on the dough rheology and steamed bread quality parameters in composite and gluten-free formulations based on potato flour was studied. Compared to control, the food hydrocolloids addition significantly increased tightly bound water population, water absorption, starch gelatinization temperature, dough viscoelasticity, recovery percentage and development height. Little adhesion and aggregation of starch were observed and the density of potato protein bands was decreased when food hydrocolloids were added, suggesting that some aggregation formed between starch-hydrocolloids or proteins-hydrocolloids. Moreover, steamed breads with food hydrocolloids presented higher specific volume, lower hardness, and lower estimated glycemic index. In conclusion, food hydrocolloids showed the potential as a gluten replacement in composite or gluten-free potato steamed bread, particularly HPMC. Thirdly, we optimized the formulations of gluten-free potato steamed bread. The optimal gluten-free steamed bread could be produced by adding 4.84 g/100g pregelatinized potato flour (PGPF), 1.68 g/100g hydroxypropylmethylcellulose (HPMC), 5.87 g/100g egg white protein (EWP) and 69.69 g/100g water based on potato flour, and this optimal bread was compatible with regular wheat bread in key sensory properties. Moreover, the optimized solid phase microextraction parameters (sample weight 2.42 g, extraction time 60 min, and extraction temperature 50°C) were adopted to determine the volatile compounds of gluten-free potato steamed bread. 72 volatile compounds were detected in the dough and crumb. The contents of alcohols, acids and esters increased significantly with the fermentation time increasing, which would improve the aroma of steamed bread. However, further investigations are needed to elucidate the underlying mechanisms of action and the interactions with dough components and making additives. The other studies should be focused on technological approaches to improve steamed bread quality, which involved different flour particles, high pressure technology and application of sourdough. [less ▲]

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See detailMean and variance of Dynamic Functional Connectivity in Parkinson’s Disease
Baquero Duarte, Katherine Andrea ULg; Guldenmund, Pieter; Rouillard, Maud ULg et al

Poster (2017, June 29)

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See detail"Exploring Experiences of Inequality in European Urban Centers: Towards an Intersectional and Transnational Approach."
Vivas Romero, Maria ULg; Ramos, Cristina

Conference (2017, June 28)

What strategies do migrants living in European cities use to challenge inequalities in access to healthcare, participation in the labor market and the creation of social support networks? The papers in ... [more ▼]

What strategies do migrants living in European cities use to challenge inequalities in access to healthcare, participation in the labor market and the creation of social support networks? The papers in this panel aim to respond to this question by drawing from transnational and intersectional approaches conceptualizing inequalities as sets of relationships between people and broader structures in which interactions generate better opportunity for some more than for others (Tilly, 2000). Panel participants consider that these interactions and the benefits that can be obtained through migration are affected by various social categories such as gender, class, sexual identity, transnational connections, and citizenship. Intersectional approaches allow to examine how these axes of inequality (Crenshaw, 1989; Anthias, 2001) simultaneously affect migration outcomes and also how they operate differently according to the geographical space in which they develop: origin and host societies as well as transnationally. Nonetheless, the papers presented in this panel will also emphasize migrants’ agency to resist or conform to the inequalities they face. Overall, this panel aims to contribute to the study of migration and inequality at the conceptual and methodological levels. At the theoretical level, the panel will build on new debates on the reproduction of intersectional inequalities in transnational settings (Faist, 2016, Amelina, 2017). At the methodological level, all paper presenters have use multi-sited ethnographic methods (working in cities such as Madrid, London, Milan, Brussels and Frankfurt) and will therefore use the panel as an opportunity to discuss the strengths and weaknesses of such method. [less ▲]

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See detailFrom internal experts to external interlocutors? EU agencies and procedures assessing the equivalence of third country legal rules with EU regulatory standards
Van Cleynenbreugel, Pieter ULg

Scientific conference (2017, June 28)

this paper will offer an overview of procedures allowing EU agencies to determine the equivalence of third country regulatory regimes and conceptualise the accountability challenges they pose. Proceeding ... [more ▼]

this paper will offer an overview of procedures allowing EU agencies to determine the equivalence of third country regulatory regimes and conceptualise the accountability challenges they pose. Proceeding in three parts, the first part will identify and classify the different third country equivalence procedures in place. Analysing the legal basis for agency intervention and the specific powers granted to the respective agencies in that respect, this part will allow to develop a topology of two different equivalence roles conferred on EU agencies. Building upon this descriptive analysis, the second part will identify two accountability challenges associated with each of the identified third country equivalence procedure categories. Seeking to overcome those challenges, the third part of the paper will make four pointed suggestions aimed at recognising explicitly and in a more centralised way the external action powers conferred on EU agencies. Doing so would at the very least allow better to tailor modifications to the external action frameworks against the background of which existing equivalence procedures currently already implicitly operate. [less ▲]

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See detailAn integrated logistics decision support model for city logistics
Limbourg, Sabine ULg

Scientific conference (2017, June 28)

Today, more than 50% of the world's population lives in cities; the urban population is projected to reach 85% by 2100. Mainly due to urbanization and e-commerce, the demand for urban freight transport ... [more ▼]

Today, more than 50% of the world's population lives in cities; the urban population is projected to reach 85% by 2100. Mainly due to urbanization and e-commerce, the demand for urban freight transport (both forward flows and reverse flows) is clearly growing. But, transport is also responsible for a large share of urban air pollution as well as noise nuisance. Thus, an integrated logistics system to optimize transport network and service design, as well as vehicles routing of a variety of modes has to be developed. The objective is to determine how to efficiently move freight by means of these services and vehicles, while reducing negative environmental impacts. The topic includes research questions related to the demand to be serviced, the type and number of facilities needed to store and consolidate freight, the better utilization of vehicle capacity (fill rate and fewer empty trips: on average, 25% of goods vehicles in Europe run empty) and the reduction of energy consumption. [less ▲]

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