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See detailA Low-complexity Resource Optimization Technique for High Throughput Satellite
Abdu, Tedros Salih UL; Kisseleff, Steven UL; Lagunas, Eva UL et al

Scientific Conference (2021)

The high throughput satellites with flexible payloads are expected to provide a high data rate to satisfy the increasing traffic demand. Furthermore, the reconfiguration capability of flexible payloads ... [more ▼]

The high throughput satellites with flexible payloads are expected to provide a high data rate to satisfy the increasing traffic demand. Furthermore, the reconfiguration capability of flexible payloads opens the door to more advanced system optimization techniques and a better utilization of satellite resources. Consequently, we can obtain high demand satisfaction at the user side. For this, dynamically adaptive high-performance and low-complexity optimization algorithms are needed. In this paper, we propose a novel low-complexity resource optimization technique for geostationary (GEO) High Throughput Satellites. The proposed method minimizes the transmit power and the overall satellite bandwidth while satisfying the demand per beam. This optimization problem turns out to be non-convex. Hence, we convexify the problem using Dinkelbach method and Successive Convex Approximation (SCA). The simulation result shows that the proposed scheme provides better flexibility in resource allocation and requires less computational time compared to the state-of-art benchmark schemes. [less ▲]

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See detailFlorence Descamps, Archiver la mémoire. De l’histoire orale au patrimoine immatériel Paris, Éd. de l'EHESS, 2019, 241 pages
Schafer, Valerie UL

in Questions de Communication (2021), 38

Recension de l'ouvrage de Florence Descamps, Archiver la mémoire. De l’histoire orale au patrimoine immatériel, Paris, Éd. de l'EHESS, 2019, 241 pages

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See detailJérôme Denis, Le Travail invisible des données. Éléments pour une sociologie des infrastructures scripturales Paris, Presses des Mines, 2018, 206 pages
Schafer, Valerie UL

in Questions de Communication (2021), 38

Recension de Jérôme Denis, Le Travail invisible des données. Éléments pour une sociologie des infrastructures scripturales, Paris, Presses des Mines, 2018, 206 pages

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See detailFamilies Across Europe - Now and Then
Albert, Isabelle UL; Valsiner, Jaan; Komatsu, Koji

in Albert, Isabelle; Emirhafizovic, Mirza; Shpigelman, Carmit-Noa (Eds.) et al Families and Family Values in Society and Culture (2021)

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See detail„Das Begehren ist das Begehren des Anderen.“ (Jacques Lacan). Lacan et "Le grand Autre" - Lacan und der große Andere: Gott, Vater, Mutter, Wissenschaft, Arbeit und Liebe. Strukturale Psychoanalyse und Religion im Dialog.
Weber, Jean-Marie UL

Presentation (2021)

Methodik: Die Lehrveranstaktung findet in Form einer interaktiven Vorlesung mit Semianrinhalten statt. Studierende erhalten Anregungen zur Selbstreflexion/-erfahrung und kritischen Auseinandersetzung mit ... [more ▼]

Methodik: Die Lehrveranstaktung findet in Form einer interaktiven Vorlesung mit Semianrinhalten statt. Studierende erhalten Anregungen zur Selbstreflexion/-erfahrung und kritischen Auseinandersetzung mit Primär- und Sekundärliteratur zu Jacues Lacan und der strukturalen Psychoanalyse. Das Seminar setzt eine Offenheit zur Selbsterfahrung voraus und findet im geschützten Rahmen statt. Die vorbereitende Lektüre von Texten werden vorausgesetzt. Inhalt: Der große Andere ist ein Begriff der Lacan'schen Psychoanalyse. Der große Andere („A“) ist im Unterschied zum „kleinen anderen“ (Objekt klein a) ein Konzept der Alterität und Andersheit. Der große Andere ist das Andere des Subjekts, das Nicht-Ich, das dieses Subjekt jedoch immer schon strukturiert und ausrichtet. So muss „der Andere als der Ort [verstanden werden], an dem das Ich, das spricht, sich konstituiert“ (Lacan: Seminar III, S. 322). Der große Andere ist die symbolische Ordnung der Sprache, die das Subjekt benutzt, um selbst sprechen zu können und von der es sich seine Stimme leiht: „Was jedes Subjekt zuerst in seinem Leben antrifft, sind Signifikanten“ (Widmer, Subversion des Begehrens S. 43). Das Modell, das hinter dieser Konzeption von Sprache steht, ist die strukturalistische Zeichen-Theorie Ferdinand de Saussures mit ihren Begriffen Signifikant und Signifikat. Die erste Verkörperung des großen Anderen ist die Hauptbezugsperson des Kindes ( die Mutter"); sie ist ein „großer anderer Wille“, der spricht und der das Kind in die Ordnung der Sprache und des Sozialen einführt. Noch mehr gilt dies für den Vater, der im Ödipuskomplex die verbietende Rolle des Gesetzes einnimmt (Inzesttabu, Kastrationsdrohung), das Kind aus dem ödipalen Begehren herausdrängt und zur außerfamiliären, sozialen Welt hin orientiert. In der Gesellschaft gilt das Gesetz des Symbolischen, d. h. das Gesetz der Sprache, der sozialen Normen und des ökonomischen Tauschs. Der große Andere ist in diesem Sinne gleichzusetzen mit der Ordnung der Sprache, des Diskurses, der staatlichen Herrschaft und der Ökonomie sowie dem „Gesetz des Vaters“ („Name-des-Vaters“). Sie bilden gleichermaßen eine symbolische Herrschaftsordnung, die das Subjekt unterwirft (sub-jectum = Unterworfenes) und strukturiert. Eine weitere Bedeutung des Begriffs des „großen Anderen“ bei Lacan ist, dass dieser Andere nicht nur das Symbolische selbst ist, sondern zugleich ein Ort, der dieses Symbolische erst legitimiert. Er ist in diesem Sinne ein „Herrensignifikant“, d. h. ein übergeordneter Signifikant, der am Ende jeder Signifikantenkette steht und der diese erst organisiert und strukturiert. Als Herrensignifikant existiert der große Andere nur als sein eigener Effekt, indem er das Symbolische strukturiert innerhalb eines Feldes, in dem er selbst nicht beinhaltet ist, als dessen Garant und Sinnstiftung er jedoch funktioniert (die klassische Form eines großen Anderen ist Gott.) [less ▲]

See detailLehrende und Schüler im Film: Performanzen, Ansprüche, Begehren und Geniessen in Bildungsprozessen.
Weber, Jean-Marie UL

Scientific Conference (2020, December 05)

Das Kino ist ein pädagogisches Institut, das unsere Fantasien formt. Es sagt uns, wie wir überhaupt begehren können, behauptet der Kulturtheoretiker und Psychoanalytiker Slavoj Zizek. So ist es sinnvoll ... [more ▼]

Das Kino ist ein pädagogisches Institut, das unsere Fantasien formt. Es sagt uns, wie wir überhaupt begehren können, behauptet der Kulturtheoretiker und Psychoanalytiker Slavoj Zizek. So ist es sinnvoll, sich als Lehrerinnen für die filmischen Inszenierungen des Lehrens und Lernens zu interessieren und sich durch sie «an-sprechen» und affizieren zu lassen. Der Workshop gilt als Austausch über markante Ausschnitte in denen Lehrer, Schule oder Unterricht Subjektwerden bzw. in ihrer Subjektivation und Humanisation blockiert sind. Bestimmte Symptome des kollektiven und individuellen Imaginären sollen freigelegt werden. Dabei stellt sich auch die Frage, inwiefern man mit Hilfe dieser (Re)-Inszenierungen des Lehrens auf der Leinwand anthropologische und strukturelle Elemente des Lehrens und von transformatorischen Bildungsprozessen erschließen kann. Besonderes Interesse gilt dabei der Frage, wie Lehrerinnen im Spielfilm Singularität und Kollektivität erfolgreich artikulieren oder dabei scheitern. [less ▲]

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See detailLe travail de parole avec les enseignants: un rempart face aux nouvelles formes de fatigue subjective
Weber, Jean-Marie UL; Pirone, Ilaria

in Psicanalise e Educacao (2020), 29

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See detailArgument Acceptance and Commitment in Formal Argumentation
Dauphin, Jérémie UL

Doctoral thesis (2020)

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See detailEffects of environmental stress factors on colon cancer and its microenvironment
Nurmik, Martin UL

Doctoral thesis (2020)

Over the last decade, cancer-associated fibroblasts (CAFs) have risen to increased prominence as one of the key drivers in the pro-tumorigenic tumor microenvironment (TME). Their incredible heterogeneity ... [more ▼]

Over the last decade, cancer-associated fibroblasts (CAFs) have risen to increased prominence as one of the key drivers in the pro-tumorigenic tumor microenvironment (TME). Their incredible heterogeneity means, however, that detailed analysis of these cells remains elusive and requires the usage of complex technologies such as single-cell sequencing. Using these approaches, numerous subtypes of cancer-associated fibroblasts have been identified, mainly based on their gene expression profiles. In this thesis, we highlight the IL1-family, especially IL1B and IL1R1, as an important driver in the pro-tumorigenic nature of fibroblast. We show how IL1B and IL1R1 are upregulated in CRC CAFs when contrasted to normal, non-tumor-associated, fibroblasts and how IL1R1 expression is strongly elevated in one of the CAF subtypes we identified using single-cell sequencing – cyCAF2. We also identified that IL1R1 correlates strongly with two of the markers characteristic of this subtype, FAP and CXCL12, and that it shows elevated signs of IL1β-derived signaling, based on gene signature analysis. From a functional perspective, we show that IL1β-activated fibroblasts induce the secretion of pro-inflammatory cytokines such as IL6, CXCL8, CXCL5, and CXCL1 and act in a pro-tumorigenic manner on tumor cells in three-dimensional co-culture systems. Furthermore, we show that IL1B can be upregulated in CAFs by, at the moment, unknown secreted factors from tumor spheroids. We also found that inhibition of basal IL1 cross-talk between CAFs and tumor spheres via IL1-inhibition results in lowered pro-tumorigenic activity of CAFs and that this can be recapitulated in vivo using ColVIcre+ IL1R1fl/fl conditional knockout mice. Finally, we highlight how IL1β stimulation in primary CAFs can modulate immune cell proliferation and the upregulation of immunomodulatory proteins such as PD-L1 and PD-L2 and may, therefore, alter the effectiveness of immune checkpoint therapy. Altogether, the results presented in this thesis suggest that inhibition of IL1β-signaling in CAFs may be a promising therapeutic option in CRC patients. [less ▲]

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See detailConference 'SL2R Days'
Palmirotta, Guendalina UL; Olbrich, Martin UL; Voglaire, Yannick

Report (2019)

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See detailStaatliche und individuelle Mehrsprachigkeit
Ehrhart, Sabine UL

in Fäcke, Christiane; Meißner, Franz-Joseph (Eds.) Handbuch Mehrsprachigkeits- und Mehrkulturalitätsdidaktik (2019)

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See detailKISS Methodologies for Network Management and Anomaly Detection
Vega Moreno, Carlos Gonzalo UL; Aracil, Javier; Magaña, Eduardo

in Vega Moreno, Carlos Gonzalo; Aracil, Javier; Magaña, Eduardo (Eds.) KISS Methodologies for Network Management and Anomaly Detection (2018)

Current networks are increasingly growing in size, complexity and the amount of monitoring data that they produce, which requires complex data analysis pipelines to handle data collection, centralization ... [more ▼]

Current networks are increasingly growing in size, complexity and the amount of monitoring data that they produce, which requires complex data analysis pipelines to handle data collection, centralization and analysis tasks. Literature approaches, include the use of custom agents to harvest information and large data centralization systems based on clusters to achieve horizontal scalability, which are expensive and difficult to deploy in real scenarios. In this paper we propose and evaluate a series of methodologies, deployed in real industrial production environments, for network management, from the architecture design to the visualization system as well as for the anomaly detection methodologies, that intend to squeeze the vertical resources and overcome the difficulties of data collection and centralization. [less ▲]

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See detailPresentation of a new sensor enabling reliable real time foot plantar pressure distribution retrieval
Melakessou, Foued; Bieck, Werner; Lallemant, Quentin et al

in 7th International Conference, MobiHealth 2017, Vienna, Austria, November 14–15, 2017, Proceedings (2017), 247

Monitoring plantar load conditions becomes useful in many health care fields, e.g. podiatric and orthopedic applications, rehabilitation tools, sports and fitness training tools, and in-field diagnosis ... [more ▼]

Monitoring plantar load conditions becomes useful in many health care fields, e.g. podiatric and orthopedic applications, rehabilitation tools, sports and fitness training tools, and in-field diagnosis and prevention tools for posture, balance, loading and contact times monitoring. IEE target is to provide a single insole-solution for daily usage in order to acquire information on the plantar load distribution for health prophylaxis in a large range of different shoe configurations. In this paper, we introduce for the first time a new High-Dynamic (HD) multi-cell smart insole sensor enabling advanced real-time foot plantar pressure monitoring applications. The in-situ measurement of the dynamic plantar load distribution provides an important new source of information that can be combined with traditional monitoring systems often based on accelerometer and gyroscope sensors. In fact, the new smart insole as presented here, facilitates the discovery in an early phase of any biomechanical mismatch in the walking or running gait of its user. Specific datasets have been recorded from a representative healthy population with different monitoring tools, i.e. force plate, pressure matrix and our new smart insole. The aim was to study the similarity of measurements recorded by each system on a defined measurement protocol. It is shown that the new monitoring device provides a competitive methodology to measure static and dynamic foot plantar pressure distribution. The system flexibility and robustness enable the development of new real-time applications, such as high peak pressure detection for diabetics, activity tracking, etc. The paper is organized as follows: we provide in Sect. 1 an overview of challenges and opportunities around foot pressure monitoring and discuss the sensing capabilities. Then we give a description of the new smart insole designed by IEE in Sect. 2. Next we define in Sect. 3 the measurement protocol based on 3 different systems, followed in Sect. 4 by a comparison of their efficiency and reliability. Finally, Sect. 5 provides related works and Sect. 6 concludes the paper. [less ▲]

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See detail3D-Plantar Foot Pressure Reconstruction based on the new IEE Smart Insole
Palmirotta, Guendalina UL

Bachelor/master dissertation (2017)

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See detailLuxembourg United Qualification Document for RoboCup 2017
Caire, Patrice; Voos, Holger UL; Medernach, Yan et al

Report (2017)

This is the qualification document for the new team, and first team of Luxembourg, called “Luxembourg United”. This is also the team’s first attempt to qualify for a RoboCup competition. First, a general ... [more ▼]

This is the qualification document for the new team, and first team of Luxembourg, called “Luxembourg United”. This is also the team’s first attempt to qualify for a RoboCup competition. First, a general description of the Luxembourg United team is presented, along with its members and the equipment owned by the team. Second, the mixed team option is considered and potential eventualities suggested. Third, the Luxembourg United team thankfully acknowledges its use of the B-Human code, and lists its original contributions to this code as well as to RoboCup 2017. Fourth, The activities of the team that contribute to Luxembourg United are outlined. Fifth, the impact of the team’s participation and research in RoboCup is described as it applies to the SPL community, to Luxembourg University and SnT Research Center, and to the whole country of Luxembourg. We conclude this document with considerations pertaining to the path that brought us to RoboCup, and present futur perspectives. [less ▲]

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See detailRetirement Intentions: The Role of Conflict With the Boss and Health
Ottenbacher, Martha UL

in Sozialer Fortschritt (2017), 66(10), 699-722

This paper explores the retirement intentions of employees and the factors that influence those intentions. Conflicts between employees and their superiors, as well as the role health plays in this ... [more ▼]

This paper explores the retirement intentions of employees and the factors that influence those intentions. Conflicts between employees and their superiors, as well as the role health plays in this conflict, were analysed using Socio-Economic Panel (SOEP) data. The results showed that both conflicts and individual's health status play a role in retirement decisions. Conflict with superiors is significantly associated with the intent to retire after accounting for control variables. Similarly, employees in poor or bad health are more likely to retire. Furthermore, health plays a moderating role: Employees in poor or bad health are likely to express retirement intentions, whereas conflict only slightly raises intention. Retirement intentions of healthy employees, however, rise steeply if there are conflicts with superiors. This suggests that healthy people may well be able to continue to work, but not necessarily do so because conflict with superiors has a greater impact on their retirement decisions than for unhealthy people. [less ▲]

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See detailOn the geometry of Householder’s and Halley’s methods
Palmirotta, Guendalina UL

Dissertation and these (2015)

In this paper, some modified Newton’s methods for solving nonlinear equations are proposed. Householder and Halley have suggested a variant of New- ton’s method in which they take an osculating parabola ... [more ▼]

In this paper, some modified Newton’s methods for solving nonlinear equations are proposed. Householder and Halley have suggested a variant of New- ton’s method in which they take an osculating parabola respectively an hyperbola instead of the tangent line. The proposed methods go faster to approximated solution, but it requires more calculation efforts. The order of convergence of both methods is three. By some interesting numerical problems, the theoretical results are illustrated. In the appendix, we give a foretaste of the proposed methods in the complex plane. [less ▲]

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