cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Systems design, assembly, integration and lab testing of WALOP-South Polarimeter
Creators: name: Maharana, Siddharth
name: Ramaprakash, A. N.
name: Rajarshi, Chaitanya
name: Khodade, Pravin
name: Joshi, Bhushan
name: Chordia, Pravin
name: Kohok, Abhay
name: Anche, Ramya M.
name: Modi, Deepa
name: Kypriotakis, John A.
name: Deokar, Amit
name: Kinjawadekar, Aditya
name: Potter, Stephen B.
name: Blinov, Dmitry
name: Eriksen, Hans Kristian
name: Falalaki, Myrto
name: Gajjar, Hitesh
name: Ghosh, Tuhin
name: Gjerløw, Eirik
name: Kiehlmann, Sebastain
name: Liodakis, Ioannis
name: Mandarakas, Nikolaos
name: Panopoulou, Georgia V.
name: Pavlidou, Vasiliki
name: Pearson, Timothy J.
name: Pelgrims, Vincent
name: Readhead, Anthony C. S.
name: Skalidis, Raphael
name: Tassis, Konstantinos
name: Uppal, Namita
name: Wehus, Ingunn K.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Wide-Area Linear Optical Polarimeter (WALOP)-South is the first wide-field and survey-capacity polarimeter in the optical wavelengths. On schedule for commissioning in 2024, it will be mounted on the 1 m SAAO telescope in Sutherland Observatory, South Africa to undertake the PASIPHAE sky survey. PASIPHAE program will create the first polarimetric sky map in the optical wavelengths, spanning more than 2000 square degrees of the southern Galactic region. The innovative design of WALOP-South will enable it to measure the linear polarization (Stokes parameters $q$ and $u$), in a single exposure, of all sources in a field of view (FoV) of $35\times35$ arcminutes-squared in the SDSS-r broadband and narrowband filters between 500-750 nm with 0.1 % polarization accuracy.
 The unique goals of the instrument place very stringent systems engineering goals, including on the performance of the optical, polarimetric, optomechanical, and electronic subsystems. All the subsystems have been designed carefully to meet the overall instrument performance goals.
 As of May 2024, all the instrument optical and mechanical subsystems have been assembled and are currently getting tested and integrated. The complete testing and characterization of the instrument in the lab is expected to be completed by August 2024.
 In this paper, we will present (a) the design and development of the entire instrument and its major subsystems, focusing on the opto-mechanical design which has not been reported before, and (b) assembly and integration of the instrument in the lab and early results from lab characterization of the instrument.
description: 20 pages; presented at 2024 SPIE Astronomical Telescopes + Instrumentation conference
title: Tuned Mass Dampers for Vibration Control of Footbridges from an Architectural Point of View
Creators: name: Kučera, Jiří
name: Nečas, Radim
name: Koláček, Jan
name: Bezručová, Kristína
name: Kučerová, Michaela
Publisher: name: Technical University of Munich
publisherIdentifier: https://ror.org/02kkvpp62
publisherIdentifierScheme: ROR
Year: 2024

description: Pedestrian comfort, subtle design, minimizing the number of fixed supports of the footbridge or material saving. These are the key arguments for integrating Tuned Mass Dampers (TMD) into the bridge project. The aim is to protect people and bridge structure from vibration and damage. The following paper presents findings from the design, production and tuning of mass dampers, their optimization possibilities and benefits for bridge engineering. From an architectural point of view, the TMD should be fully or at least partially integrated into the bridge design in order not to disturb the overall bridge appearance from the frog or side perspective. There are several ways to achieve this, from the materials, covers or colors used, over the TMD design aligned with the bridge design, to a special TMD chamber within the bridge deck to house the damper. The main challenges are extremely slender bridge structures or structures densely interrupted by beams. The goal is to marry form and function. This paper presents best practice from the Czech Republic and Slovakia regarding TMD function and form. It concerns the Štvanice footbridge over the Vltava River in Prague, the footbridge over the Jizera river in Mladá Boleslav connecting Škoda Auto with a meadow, footbridge in Bílovice nad Svitavou with extremely slender bridge structure and the bicycle bridge over the high-speed road in Banská Bystrica, Slovakia. Dynamic tests including measurements were carried out before and after the installation of the dampers. The dynamic monitoring of the compliance of modal parameters was performed using Operational Modal Analysis (OMA). The evaluation of the dynamic tests also includes the response to pedestrian effects (comfort criteria) and the determination of the logarithmic decrement of the damping.
Stratégie nationale de la compétitivité logistique : Bilan et perspectives
Creators: name: BENTALHA, Badr
name: HMIOUI, Aziz
name: ALLA, Lhoussaine
Publisher: name: Alternatives Managériales Economiques
Year: 2023
Subjects: Supply chain management ; Logistique ; Logistique marocaine ; Stratégie nationale de la compétitivité logistique ; Compétitivité logistique

description: Affectée par les nouvelles considérations technologiques et environnementales, la logistique est une thématique relativement au centre des préoccupations managériales et académiques. Les enjeux logistiques et les considérations de compétitivité ont modifié la perception des variables managériales et stratégiques. Le présent travail développe une analyse sur les réalisations et les perspectives de la logistique marocaine. Une étude de cas des alternatives possibles en matière d’opportunités technologiques et commerciales et également en matière de freins de développement est proposée. L’approche est guidée par une revue de littérature, une analyse de la stratégie nationale de la compétitivité logistique, des réalisations actuelles et des défis persistants. L’étude réalisée retrace de fortes possibilités de développement en termes de partenariat public privé, digitalisation et formation et expose également la forte présence des limites financières et des risques fonciers.
description: Alternatives Managériales Economiques, Vol 5 (2023): Numéro Spécial 2 : Exploration des transformations structurelles économiques et sociales au Maroc : évaluation des défis et des acquis
title: The Budapest New Danube Bridge
Creators: name: Metters, Edmund
name: Leung, Kenneth
name: Nowak, Kristoph
name: Árkai, György
name: Kolozsi, Péter
Publisher: name: Technical University of Munich
publisherIdentifier: https://ror.org/02kkvpp62
publisherIdentifierScheme: ROR
Year: 2024

description: The Budapest New Danube Bridge (BNDB), a major new multimodal bridge over the Danube River in Budapest, Hungary, is a testament to the power of international collaboration. The bridge will be located south of the city centre, adding to Budapest’s rich history of extraordinary bridges and becoming a new landmark. The bridge’s design was conceived during an international design competition in 2017 by Buro Happold and UNStudio, two renowned firms in the field of engineering and architecture. Their innovative and striking design, particularly the cranked pylon, stood out among the entries and was awarded the first prize. This international collaboration brought together the expertise and creativity of different cultures and disciplines, resulting in a design that is not only aesthetically pleasing but also structurally sound. The BNDB project also involved collaboration with CÉH, a leading Hungarian engineering firm in building and bridge design. This partnership further emphasizes the international nature of this project and the benefits of global collaboration in tackling large-scale infrastructure projects. The combined expertise of these three entities - Buro Happold, UNStudio, and CÉH - has resulted in a design that is set to become a new landmark in Budapest. The design process required complex structural, geotechnical, and hydraulic analysis. This highlights the technical expertise of the design team and their combined commitment to creating a design that is considered and feasible. The innovation in the design emerges through the adoption of cutting-edge international best practice. The design also underwent extensive third-party a rigorous independent checking, and approvals, ensuring its safety and compliance with international standards. In conclusion, the BNDB is an exemplar of how international collaboration can lead to innovative and successful project. It showcases how different entities, each with their unique expertise, can come together to create something extraordinary. This project serves as a model for future international collaborations in the field of architecture and engineering.
Quantitative Investment Diversification Strategies via Various Risk Models
Creators: name: Gharanchaei, Maysam Khodayari
name: Panda, Prabhu Prasad
name: Chen, Xilin
Publisher: name: arXiv
Year: 2024
Subjects: subject: Portfolio Management (q-fin.PM)
subject: Optimization and Control (math.OC)
subject: FOS: Economics and business
subject: FOS: Mathematics

description: This paper focuses on the developing of high-dimensional risk models to construct portfolios of securities in the US stock exchange. Investors seek to gain the highest profits and lowest risk in capital markets. We have developed various risk models and for each model different investment strategies are tested. Out of sample tests are performed on a long-term horizon from 1970 until 2023.
title: New Design Methods for Trapezoidally Corrugated Web Girders
Creators: name: Jáger, Bence
name: Kövesdi, Balázs
name: Dunai, László
Publisher: name: Technical University of Munich
publisherIdentifier: https://ror.org/02kkvpp62
publisherIdentifierScheme: ROR
Year: 2024

description: Steel corrugated web girders are increasingly used in buildings, industrial halls and in bridges due to their well-known advantages. Numerous researchers highlighted and studied the advantages and favorable properties of the trapezoidally corrugated web girders in the past. However, there are only a limited number of available design proposals for the resistance calculation of trapezoidally corrugated web girders. The current research focuses on the authors’ contribution to recover this lack of information and to improve the economic design of corrugated web girders. In frame of the research activity standard conform design procedures are developed providing both analytical resistance models and proposals for FEM based design approaches for the design of corrugated web girders. The design proposals are developed based on comprehensive experimental, analytical and numerical studies. The current paper collects and introduces the completed and on-going research activities and the improved design proposals developed by the BME Department of Structural Engineering within the last 15 years.
L’efficacité du recrutement digitalisé par rapport au recrutement classique : Cas de l’USMS Béni Mellal
Creators: name: IMASS, Lahcen
name: OUBRAHIMI, Mustapha
name: ICHOU, Mohamed Adil
Publisher: name: Alternatives Managériales Economiques
Year: 2023
Subjects: Ressources humaines ; recrutement digitalisé, recrutement classique

description: Cet article propose une analyse exploratoire de l'impact de la digitalisation du processus de recrutement des RH et met en évidence les avantages qu'elle présente par rapport aux méthodes traditionnelles dans le cas de l'USMS Béni Mellal. Une approche empirique a été adoptée, combinant des méthodes de recherche qualitatives et quantitatives. Les résultats obtenus soulignent que le recrutement digitalisé est plus efficace que le recrutement classique. En effet, la digitalisation du processus de recrutement des RH présente des avantages significatifs à toutes les étapes de cette opération confirmant l'efficacité supérieure du recrutement digitalisé par rapport aux méthodes traditionnelles dans l'USMS Béni Mellal. Premièrement, elle permet une diffusion plus large des offres d'emploi, atteignant ainsi un plus grand nombre de candidats potentiels. De plus, les plateformes de recrutement en ligne facilitent la sélection et la présélection des candidats, en utilisant des outils de filtrage et d'évaluation adaptés. En outre, la digitalisation du processus de recrutement offre une plus grande rapidité et efficacité, réduisant ainsi les délais de recrutement et accélérant l'intégration des nouveaux employés au sein de l'organisation. Elle favorise également la transparence et l'équité dans le processus de sélection, en permettant une évaluation objective des compétences et en limitant les biais liés aux critères de sélection subjectifs.
description: Alternatives Managériales Economiques, Vol 5 (2023): Numéro Spécial 2 : Exploration des transformations structurelles économiques et sociales au Maroc : évaluation des défis et des acquis
Unsupervised Face-Masked Speech Enhancement Using Generative Adversarial Networks With Human-in-the-Loop Assessment Metrics
Creators: name: Wang, Syu-Siang
name: Chen, Jia-Yang
name: Bai, Bo-Ren
name: Fang, Shih-Hau
name: Tsao, Yu
Publisher: name: arXiv
Year: 2024
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The utilization of face masks is an essential healthcare measure, particularly during times of pandemics, yet it can present challenges in communication in our daily lives. To address this problem, we propose a novel approach known as the human-in-the-loop StarGAN (HL-StarGAN) face-masked speech enhancement method. HL-StarGAN comprises discriminator, classifier, metric assessment predictor, and generator that leverages an attention mechanism. The metric assessment predictor, referred to as MaskQSS, incorporates human participants in its development and serves as a "human-in-the-loop" module during the learning process of HL-StarGAN. The overall HL-StarGAN model was trained using an unsupervised learning strategy that simultaneously focuses on the reconstruction of the original clean speech and the optimization of human perception. To implement HL-StarGAN, we curated a face-masked speech database named "FMVD," which comprises recordings from 34 speakers in three distinct face-masked scenarios and a clean condition. We conducted subjective and objective tests on the proposed HL-StarGAN using this database. The outcomes of the test results are as follows: (1) MaskQSS successfully predicted the quality scores of face mask voices, outperforming several existing speech assessment methods. (2) The integration of the MaskQSS predictor enhanced the ability of HL-StarGAN to transform face mask voices into high-quality speech; this enhancement is evident in both objective and subjective tests, outperforming conventional StarGAN and CycleGAN-based systems.
description: face-mask speech enhancement, generative adversarial networks, StarGAN, human-in-the-loop, unsupervised learning
Repenser l’entrepreneuriat au sein du secteur informel au Maroc à l’ère du post Covid-19 : Pour approche prospective de la formalisation intégrative
Creators: name: ALLA, LHOUSSAINE
name: EL JAOUHARI, Smail
name: BENTALHA, Badr
name: BOUHTATI, Abdelfattah
Publisher: name: Alternatives Managériales Economiques
Year: 2023
Subjects: Economie informelle ; entrepreneuriat informel ; résilience informelle ; déviance ; formalisation

description: Plusieurs travaux ont abouti à ce que la dynamique entrepreneuriale dans le secteur est davantage liée à une panoplie de raisons ou motivations tant que subjective. A part la sphère illégale de cette économie, la compréhension d’une telle dynamique, incitant les entrepreneurs à évoluer dans l’économie informelle et stimulant leur résilience à la lisière de l’économie moderne. Avec la pandémie du Covid-19, certaines entreprises informelles ont fait preuve, plus que d’autres, d’importantes capacités de résistance à la crise, de plus créativité et d’innovation, de plus d’organisation et de réseautage, pourtant aux prises avec un environnement hostile et ne pouvant compter sur aucune aide de l’État. Comment peut-on appréhender autrement le business model de l’entrepreneuriat du secteur informel pour mieux approcher sa formalisation intégrative ? A partir d’une revue de littérature, nous tentons d’abord de cerner le concept, les approches de l’entrepreneuriat informel, les déterminants théoriques de la dynamique entrepreneuriale dans le secteur via la proposition d’un profil-type. Ensuite, nous présentons les modèles de référence de structuration-formalisation du secteur, et en proposer une trame théorique, à affiner par contextualisation dans le cadre de l’économie marocaine. Les propositions de recherche ainsi dégagées seront étudiées examinées par des entretiens semi-directifs avec les entrepreneurs opérant dans l’informel. L’objectif de cette étude est de contribuer à la bonne compréhension des causes de la résilience de ces entrepreneurs, les leviers à mobiliser pour réussir le processus de formalisation.
description: Alternatives Managériales Economiques, Vol 4, No 1 (2022)
La place des institutions dans la dynamique du capital investissement au Maroc : une approche par la modélisation AutoRegressive Distributed Lag (ARDL)
Creators: name: EL GHALFIKI, Jawad
name: BENALI, Mimoun
Publisher: name: Alternatives Managériales Economiques
Year: 2023
Subjects: ARDL ; Capital investissement ; Déterminants ; Institutions ; Maroc

description: Cette étude vise à déterminer l’impact des facteurs institutionnels, tels que la corruption et la stabilité politique, sur la dynamique du capital investissement au Maroc. Pour ce faire, nous avons utilisé la méthode ARDL "bounds test" et l’approche de causalité à long terme de Toda et Yamamoto sur la période de 1993 à 2019. Les résultats montrent que le cadre institutionnel n’a pas d’impact significatif sur la dynamique du capital investissement au Maroc. Cependant, cette étude souligne que d’autres déterminants institutionnels peuvent être importants et contribuer à l’activité de capital-investissement sans être pris en compte dans cette analyse. Ces résultats pourraient également aider les décideurs politiques et les investisseurs à prendre des décisions éclairées dans ce domaine.
description: Alternatives Managériales Economiques, Vol 5, No 2 (2023)
Macroeconomic Forecasting using Dynamic Factor Models: The Case of Morocco
Creators: name: DAOUI, Marouane
Publisher: name: Alternatives Managériales Economiques
Year: 2023
Subjects: Macroeconomic forecasting ; Dynamic Factor Models ; Factor-Augmented Error Correction Model ; Cointegration ; Non-stationary variables ; Morocco

description: This article discusses the use of dynamic factor models in macroeconomic forecasting, with a focus on the Factor-Augmented Error Correction Model (FECM). The FECM combines the advantages of cointegration and dynamic factor models, providing a flexible and reliable approach to macroeconomic forecasting, especially for non-stationary variables. We evaluate the forecasting performance of the FECM model on a large dataset of 117 Moroccan economic series with quarterly frequency. Our study shows that FECM outperforms traditional econometric models in terms of forecasting accuracy and robustness. The inclusion of long-term information and common factors in FECM enhances its ability to capture economic dynamics and leads to better forecasting performance than other competing models. Our results suggest that FECM can be a valuable tool for macroeconomic forecasting in Morocco and other similar economies.
description: Alternatives Managériales Economiques, Vol 5, No 2 (2023)
Probing Velocity Dispersion inside CMEs in Inner Corona: New Insights on CME Initiation
Creators: name: Majumdar, Satabdwa
name: Huys, Elke D'
name: Mierla, Marilena
name: Vashishtha, Nitin
name: Talpeanu, Dana-Camelia
name: Banerjee, Dipankar
name: Reiss, Martin A.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: This work studies the kinematics of the leading edge and the core of 6 Coronal Mass Ejections (CMEs) in the combined field of view of Sun Watcher using Active Pixel System detector and Image Processing (SWAP) on-board PRoject for On-Board Autonomy (PROBA-2) and the ground-based K-Cor coronagraph of the Mauna Loa Solar Observatory (MLSO). We report, for the first time, on the existence of a critical height h$_\mathrm{c}$, which marks the onset of velocity dispersion inside the CME. This height for the studied events lies between 1.4-1.8 R$_{\odot}$, in the inner corona. We find the critical heights to be relatively higher for gradual CMEs, as compared to impulsive ones, indicating that the early initiation of these two classes might be different physically. We find several interesting imprints of the velocity dispersion on CME kinematics. The critical height is strongly correlated with the flux-rope minor radius and the mass of the CME. Also, the magnitude of velocity dispersion shows a reasonable positive correlation with the above two parameters. We believe these results will advance our understanding of CME initiation mechanisms and will help provide improved constraints to CME initiation models.
description: 16 Pages, 9 Figures, Accepted for publication in The Astrophysical Journal Letters
Intelligence territoriale : A la recherche d’un ancrage théorique et pratique
Creators: name: BOUAOULOU, Mouna
name: NMILI, Mohamed
Publisher: name: Alternatives Managériales Economiques
Year: 2023
Subjects: Intelligence territoriale ; Information ; système d’information ; interaction ; réseau ; partenariat.

description: L’intelligence territoriale (IT) est un concept naissant dont le socle théorique et pratique demeure toujours en cours de construction. Plusieurs chercheurs de différents disciplines (économie, géographie, sciences de l’information…) se sont penchés sur l’étude de ce concept avec pour objectif d’abord le cernement de ces différentes dimensions pour pouvoir par la suite le rendre pratique. En effet, l’IT représente une révolution sociétale qui favorise l’immersion du territoire dans une nouvelle culture du développement. L’objectif principal de cet article est de rendre claire ce concept tant d’un point de vue théorique que pratique, et ce via une revue de littérature systématique. Cette dernière se base sur une base de données formée des principales publications traitant essentiellement ou partiellement notre objet de recherche. A L’issue de notre analyse, nous sommes parvenus aux conclusions suivantes : l’IT revêt principalement deux formes, l’une descendante et représente une application territoriale de l’intelligence économique et l’autre ascendante et fait référence à un mode d’intelligence collective au service du développement territorial durable. Les démarches de mise en place de l’IT se veulent plurielles (dispositifs régionaux d’IE, Quintuple Hélice, ingénierie multi-projets, Système d’information territoriale) mais des efforts dans l’objectif de la standardisation de cette opération demeurent nécessaires.
description: Alternatives Managériales Economiques, Vol 5, No 2 (2023)
title: Design of Budapest New Danube Bridge, Hungary
Creators: name: Kolozsi, Péter
name: Árkai, György
name: Metters, Edmund
name: Leung, Kenneth
Publisher: name: Technical University of Munich
publisherIdentifier: https://ror.org/02kkvpp62
publisherIdentifierScheme: ROR
Year: 2024

description: New Danube Bridge in Budapest, designed by BuroHappold and UNStudio, along with the Hungarian specialist bridge designer firm CÉH, will be a stunning landmark cable-stayed bridge redefining the landscape of Budapest, while creating a long-awaited new connection between the South Buda districts and Csepel Island. The bridge accommodates a 2x2 road, a 2x1 combined tram and bus, two-way cycle lanes and footpaths on both sides. The five-span cable stayed bridge will comprise two inclined pylons with aesthetically pleasing shape. It will have a main span of 246.00 m crossing the Danube navigation route, at a skew angle of 73°. The main span will be supported by fore stays arranged symmetrically and perpendicular to the bridge deck centerline. Backstays, each comprising 4 concentrated stay cables will connect the top of the pylons to anchorage piers on the riverbanks. The design of the river piers was extensively studied at the very early design stages to provide both combined architectural and engineering solution. The design satisfies the navigation requirements, considers the hydraulic effects, and elegantly supports the bridge superstructure. Departing from the rectangular competition geometry, early stage river pier variations were aligned to be more streamlined and elegant. These variations were investigated using two dimensional numerical hydraulic simulations and a small-scale physical model. Downstream vortex shedding was observed at one of the pier types. In addition to conventional methods, state-of-the-art 3D CFD models were built to reveal the prevailing flow features and riverbed movements in the vicinity of the investigated river piers. The results of detailed studies performed on the different pier variants, refuted the significant extent of vortex shedding observed in the small-scale experiment. However, they made clear that fine tuning of the pier angle would produce a better solution considering complex stream conditions and different water levels.
title: The New Gänstor Bridge
Creators: name: Klähne, Thomas
name: Sweers, Bastian
name: Ripke, Henry
name: Roth, Tim
Publisher: name: Technical University of Munich
publisherIdentifier: https://ror.org/02kkvpp62
publisherIdentifierScheme: ROR
Year: 2024

description: The new Gänstor Bridge is a single-span integral composite rigid frame structure over the Danube that will replace the old bridge designed by Ulrich Finsterwalder. With a span of 86.50 m, it is one of the longest rigid frame structures in Germany. It connects the cities of Ulm and Neu-Ulm and will be able to accommodate not only car, bicycle and pedestrian traffic, but also a tram. The design is the result of a design competition announced in 2019/2020. Based on the old prestressed concrete bridge, which is an outstanding example of engineering from the early 1950s, the design impresses with its slim appearance. This slenderness is achieved, among other things, by the tapering of the superstructure from the frame corner to the middle of the bridge and by the cross-sectional height decreasing from the middle of the roadway to the outer edge. The bridge consists of two substructures. The superstructure of each substructure consists of a 5-cell hollow box made of steel and a 25 cm thick reinforced concrete slab. The superstructure is fixed into the deep-founded abutments. Both the dismantling of the existing structure and the construction of the new structure are very demanding due to the inner-city and environmental constraints. In the spirit of sustainability, the existing pillar foundations of a previous structure from 1912 will be used to demolish the existing structure and assemble the new superstructure.
Méthodologie et épistémologie de recherche en Sciences de Gestion : enjeux et perspectives
Creators: name: ABOUSAID, Fatima Zohra
Publisher: name: Alternatives Managériales Economiques
Year: 2023
Subjects: Positionnement épistémologique ; Dispositif méthodologique ; Recherches qualitatives ; Recherches quantitatives ; Recherches en Sciences de Gestion

description: La manière dont nous construisons notre question de recherche dépend des présupposés épistémologiques qui sous-tendent la recherche elle-même. Il ne fait aucun doute que l'école de pensée épistémologique a produit un héritage puissant et durable, en ce qui concerne la construction et le développement des diverses théories relatives à la recherche en sciences de gestion (Lancaster, 2007). Ainsi, la nature de la connaissance que nous pouvons espérer produire dépend de nos hypothèses sur la nature de la réalité, de la relation sujet-objet et du monde social que nous envisageons (Ahrweiler and Thietart, 1999). Ces éléments constituent alors des repères pour définir la position épistémologique et méthodologique de tout travail de recherche en sciences de gestion. L’objectif donc de cet article est de mettre en exergue les principales orientations épistémologiques, ainsi que le dispositif méthodologique adoptée dans une recherche en sciences de gestion. En d’autres termes, notre problématique est de déterminer comment les présupposés épistémologiques influencent la construction de la question de recherche et comment les positions épistémologique et méthodologique sont définies dans la recherche en sciences de gestion.
description: Alternatives Managériales Economiques, Vol 5, No 2 (2023)
Effet du secteur informel sur la relation entre le chômage et la production : Le cas du Cameroun
Creators: name: SALLA, Dominique Sébastienne
Publisher: name: Alternatives Managériales Economiques
Year: 2023
Subjects: Secteur informel ; probabilité de transition ; chômage ; croissance économique ; production.

description: Le Cameroun, comme de nombreux pays en développement, est confronté au défi d'un secteur informel énorme et croissant. Charmes (2012) estime à 57,6 %, la part du secteur informel dans le PIB du pays. L’Enquête sur l’Emploi et le Secteur Informel réalisée par l’Institut Nationale de la Statistique en 2010 indique que ce secteur emploie à lui seul 90,5 % de la population active (INS, 2011). Cet article analyse l'effet du secteur informel sur la relation entre les variations du chômage et la croissance de la production. L’on soutient non seulement que l'emploi informel réduit la sensibilité du chômage aux variations de la production, mais aussi qu’il peut aider à comprendre la dynamique du marché du travail dans les pays en développement. Pour ce faire, on propose un modèle empirique à partir de contributions récentes sur la non-linéarité du coefficient d'Okun dans lequel le passage d'un régime à l'autre dépend de la variation de l'emploi informel. Les résultats de l’analyse économétrique indiquent l'existence d'une relation asymétrique entre les composantes cycliques de la production et du chômage.
description: Alternatives Managériales Economiques, Vol 5, No 2 (2023)
Effets des caractéristiques du propriétaire-dirigeant sur la protection de l'environnement dans les PME au Cameroun
Creators: name: AGOUME ISSEME, Petronille Cynthia
Publisher: name: Alternatives Managériales Economiques
Year: 2023
Subjects: Propriétaire-dirigeant ; Protection de l'environnement ; PME ; Logit

description: Ces dernières années, la question de la Responsabilité sociale de l’entreprise a suscité un intérêt croissant dans le monde entier. Des recherches importantes questionnent la relation entre la protection de l’environnement et les caractéristiques du propriétaire-dirigeant. Malgré l’abondance des recherches, le débat est loin d’être clos et les conclusions toujours mitigées, laissant encore la place aux questionnements. Notre papier s’inscrit à cet exercice et examine les effets des caractéristiques démographiques du propriétaire-dirigeant sur l’indicateur environnemental des PME au Cameroun. Pour ce faire, une analyse théorique et des données empiriques issues de l’enquête de l’Institut national de la statistique de 2016 auprès des entreprises ont été combinées. Par la méthode Logit, les résultats montrent le sexe et l’âge du propriétaire-dirigeant ont des effets significativement positifs sur la protection de l’environnement de la PME à 1%. Par contre, les niveaux d'éducation-primaire et secondaire-du propriétaire-dirigeant montrent des effets significativement négatifs. La nationalité montre que les PDG d’origine occidentale ne sont pas enclins à la protection de l’environnement. Cette recherche apporte des connaissances précieuses à l'étude des liens entre les caractéristiques du propriétaire-dirigeant et la performance environnementale des PME, ce qui ajoute de la littérature à la théorie de l'échelon supérieur.
description: Alternatives Managériales Economiques, Vol 5, No 2 (2023)
Constructing an Investment Fund through Stock Clustering and Integer Programming
Creators: name: Gharanchaei, Maysam Khodayari
name: Panda, Prabhu Prasad
Publisher: name: arXiv
Year: 2024
Subjects: subject: Portfolio Management (q-fin.PM)
subject: Optimization and Control (math.OC)
subject: FOS: Economics and business
subject: FOS: Mathematics

description: This paper focuses on the application of quantitative portfolio management by using integer programming and clustering techniques. Investors seek to gain the highest profits and lowest risk in capital markets. A data-oriented analysis of US stock universe is used to provide portfolio managers a device to track different Exchange Traded Funds. As an example, reconstructing of NASDAQ 100 index fund is presented.
Análisis y sugerencias sobre la justicia restaurativa en la JEP
Creators: name: Institute for Integrated Transitions
Publisher: name: Zenodo
Year: 2019
Subjects: Colombia
IFIT
justicia restaurativa
JEP
Sistema Integral
FARC
derechos de las víctimas
reparación
no repetición
sanciones
retribución y castigo
comunidad
reconciliación
Comisión de la Verdad
SRVR
reconocimiento de responsabilidad
Catatumbo
Caquetá

description: El presente documento tiene por objeto presentar un diagnóstico sobre la justicia restaurativa en el modelo transicional colombiano, particularmente en el marco del ejercicio de las funciones de la Jurisdicción Especial para la Paz (JEP), así como plantear algunas propuestas para su aplicación práctica.
Presentation Of The Paper "Can We Apply Learning Analytics Tools In Challenge Based Learning Contexts?" In Hcii 2017
Creators: name: Conde, M. Á.
Publisher: name: Zenodo
Year: 2017
Subjects: Challenge Based Learning; tools; Learning Analytics; learning evidences

description: This is the presentation of the paper entitled “Can we apply learning analytics tools in Challenge Based Learning contexts?” in the Emerging interactive systems for education session at the HCI International 2017 Conference, held in Vancouver, Canada, 9 - 14 July 2017.

The information and Communication Technologies changes how we interact with others and with the information. It can be really accessed at anytime and anywhere. Future professionals should be ready for this reality which requires changes in traditional teaching and learning methods. Challenge Based Learning is an example of them. This method poses challenges to students that they should solve employing the technology they use during their daily life. The evaluation of challenges solutions should take into ac-count students’ final outcomes but also the interactions that take place be-tween them. This could be very hard given the wide choice of tools that students can apply. Learning analytics tools could be a solution. This worjk reviews and classifies the tools applied in several Challenge Based Learning experiments and describes different possibilities to apply Learning Analytics. From this research, it is possible to conclude that Learning Analytics can be applied in Challenge Based Learning contexts, but it is desirable to use a single platform to group the tools employed to solve the challenge.
Knockout of NRF2 triggers prostate cancer cells death through ROS modulation and sensitizes to cisplatin
Creators: name: Camargo Silva Mancini, Mariana
name: Ana Paula, Morelli
name: Matheus, Brandemarte Severino
name: Isadora Carolina, Betim Pavam
name: Érika, Pereira Zambalde
name: Mariana Marcela, Góis
name: Luiz Guilherme, Salvino da Silva
name: Nathalia, Quintero Ruiz
name: Caio Felipe, Romero
name: Daniel Francisco, G. dos Santos
name: Rosângela Maria, Neves Bezerra
name: Simabuco, Fernando
Publisher: name: Zenodo
Year: 2022

description: Prostate cancer (PCa) represents the second most common cancer in men and affects millions worldwide. Chemotherapy is a common treatment for PCa but the development of resistance is often a problem during therapy. NRF2 (nuclear factor erythroid 2‐related factor 2) is one of the major transcription factors regulating antioxidant enzymes and is also involved with drug efflux and detoxification. Cancer cells submitted to chemotherapy often promote NRF2 activation to benefit themselves with the  cytoprotective response. Here, we found that DU145 and PC3 PCa cell lines have different responses regarding NRF2 activation, when subjected to arsenite‐induced stress, even in the presence of MG132, a proteasome inhibitor. We also observed that only inPC3 cells treated with arsenite, NRF2 was able to translocate to the nucleus. To better understand the role of NRF2 in promoting chemoresistance, we performed CRISPR knockout of NRF2 (NKO) in DU145 and PC3 cells. The effectiveness of the knockout was confirmed through the downregulation of NRF2 targets (p < 0.0001). PC3 NKO cells exhibited higher levels of reactive oxygen species (ROS) compared to wild‐type cells (p < 0.0001), while this alteration was not observed in DU145 NKO cells. Despite no modulation in ROS content, a lower IC50 value (p < 0.05) for cisplatin was observed in DU145 NKO cells, suggesting that the knockout sensitized the cells to the treatment. Besides, the treatment of DU145 NKO with cisplatin led cells to apoptosis as observed by the increased levels of PARP1 cleavage (p < 0.05), possibly triggered by increased DNA damage. Reduced levels of KU70 and phospho‐CHK2 (p < 0.05) were also detected. The data presented here support that NRF2 is a mediator of oncogenesis and could be a potential target to sensitize PCa cells to chemotherapy, reinforcing the importance of knowing the specific genetic and biochemical characteristics of the cancer cells for a more effective approach against cancer.
title: The New Bechlingen Viaduct in the Course of the Motorway A 45
Creators: name: Schramm, Nicholas
name: Sonnabend, Stephan
name: Wagner, Peter
Publisher: name: Technical University of Munich
publisherIdentifier: https://ror.org/02kkvpp62
publisherIdentifierScheme: ROR
Year: 2024

description: Due to deficits identified during the recalculation of the Bechlingen viaduct on the A 45 the two substructures of the existing arch bridge had to be replaced by a new construction. For this purpose, the existing bridge structure was dismantled with the help of a demolition scaffolding. The new bridge structure consists of a geometrically complex three-span continuous girder system in prestressed concrete construction with two separate superstructures. The very wide cross-section required in the course of the six-lane expansion is designed as a two-cell prestressed concrete box girder with internal and external prestressing. Due to the section-by-section production on a scaffolding which was ground supported or suspended from the joints and the concreting of the cross-section in four sections, the interaction between the structure and shoring with regard to the load-bearing behavior had to be investigated in detail. This contribution deals with special features of the design and construction of the new bridge structure as well as the demolition of the existing bridge.
title: Correlation of the Fatigue Strengths of Wire and Rope in Full Locked Coil Ropes
Creators: name: Feldmann, Markus
name: Wolters, Kevin
name: Rittich, Nils
Publisher: name: Technical University of Munich
publisherIdentifier: https://ror.org/02kkvpp62
publisherIdentifierScheme: ROR
Year: 2024

description: In order to be able to analyse the internal stress state in FLCs, volumetric models of the entire rope were created. This was done in a two-step process. The geometry of the individual wires was created in CAD software and imported to ABAQUS/CAE, where the cross section was then assembled. Each layer was modelled with correct wire dimensions, lay-angle and spacing to other layers. For the shaped wires, dimensions were taken from a supplier of FLCs to correctly model the locking geometry. All individual wires were then patterned around the core wire, building the full locked structure. The created model is shown in Figure 4.
Innovation Process and Ethics in Technology
Creators: name: Nathan, Ganesh
Publisher: name: Fachhochschule Nordwestschweiz FHNW
Year: 2014

description: Innovation governance models, dealing in general with organizational structure, innovation process, strategy and leadership, are becoming increasingly important for innovative companies within the changing complexity of innovation ecosystems. Traditionally, governance is related to risk management and corporate governance is concerned with the rules and conduct of management to minimize risks to shareholders. With the increasing importance of ethical concerns and issues of governance in general, and in particular with technological innovations for responsible innovation (Owen et al., 2013), this paper focuses on the need for technological innovation processes to embed an ethical decision-making framework with a view to responsible innovation governance.
Detection of estrogen receptors in meningiomas using FES PET-CT scans, a pilot study
Creators: name: Estrada, Norma Elizabeth Vázquez
name: Jímenez, Sergio Moreno
name: Sánchez, Laura Hernández
Publisher: name: F1000Research
Year: 2017

description: Introduction

Meningiomas are tumors derived from the meningeal arachnoid cells; most of them are benign, however, from 1% to 3% can be aggressive. The most common treatment options for these tumors are active observation, surgical resection, and radiation therapy. The presence of hormonal receptors in meningiomas has been previously reported; thus, a higher incidence of these tumors has been shown during pregnancy and hormonal substitution therapies.

The 16aplha [l8F] Fluoro-17beta-estradiol ([18F]FES) is widely used for the detection of breast cancer and has a similar metabolism to estradiol. The aim of this pilot study was to assess the presence of estrogen receptors in human meningiomas using [18F]FES positron emission tomography (PET) scans.

Materials and Methods

A prospective, longitudinal, experimental, pilot study was conducted. Five patients with a lesion suggestive of recent previous Meningioma diagnosis by biopsy or partial previous resection were included.

In order to measure the binding to estrogen receptors during the studies the T/NT (ratio of tumor activity to that of normal tissue), and the SUV (standardized uptake value) were calculated 30 minutes after the tracer intake.

Results

PET Scans showed a positive uptake of [18F]FES tracer by the tumor in the five patients included. The avaerage maximal T/NT was 5.15, Mean T/NT 3.18, average maximal SUV intake index was 1.96, and mean SUV intake 1.91.

The tracer dose given for all the patients was 6.1 mCi. None of the patients presented adverse effects during the scan or during the following 6 months after the study.  Pathology reports confirmed a meningioma diagnosis in the four patients that underwent surgical resection.

Conclusion

A positive tumor uptake was demonstrated in the five patients included in the study, this could mean a correlation between the presence of estrogen receptors in meningiomas and the FES PET Scans Imaging findings.

This pilot study opens the gate to the conduction of new studies that could correlate the histopathology of the tumors with the [18F]FES tracer uptake, and to establish a relation between the presence of estrogen receptors in meningiomas and the FES uptake detected by PET Scans.

Furthermore, studies are needed to establish the normal biodistribution of the [18F]FES tracer in the human brain.
Tualang Honey: akin angiogenesis inhibitor
Creators: name: Firdaus, Abdul Khalid Ahmad
name: Hakim, Abdullah Muhammad Nazrul
name: Yoke Keong Yong
Publisher: name: F1000Research
Year: 2017

description: Formation of new blood vessels controlled by chemical signals involves differentiation, growth and migration of the endothelial cells lining the interior blood vessels. MTH is a wild multi-flora honey produced by the Apis dorsata bees. MTH has proven to have high medicinal properties due to high bioactive constituents such as phenolic acids and flavonoids. By the use of endothelial cells, we investigated the anti-proliferative and anti-migratory activity of honey using concentrations 0.3%, 0.6%, and 0.9%. The MTT results suggested that viability of HUVECs decreased when the concentration of MTH is increased. However, the IC50 of MTH fall at 4.3%. Based on MTT result, 0.3%, 0.6% and 0.9% of MTH were chosen for cell proliferation and cell migration assay. All concentrations tested significantly reduced the proliferation rate of endothelial cells but 0.9% showed the maximal inhibition. Similarly, at the same concentration a reduction in the migration distance was about half of the total migration in was observed (VEGF) Induced-HUVECs. MTH is a potential anti-angiogenesis inhibitor which can be obtain and consumed easily. Therefore, further investigation on the cellular mechanisms regulating the proliferation and migration of human vascular cells should be studied.
Supplemental Material - Effects on blood parameters from hand-arm vibrations exposure
Creators: name: Johansson, Niclas
name: Ragnebro, Oscar
name: Stjernbrandt, Albin
name: Graff, Pål
name: Bryngelsson, Ing-Liss
name: Vihlborg, Per
Publisher: name: SAGE Journals
Year: 2023
Subjects: subject: 111599 Pharmacology and Pharmaceutical Sciences not elsewhere classified
subject: FOS: Clinical medicine

description: Supplemental Material for Effects on blood parameters from hand-arm vibrations exposure by Niclas Johansson, Oscar Ragnebro, Albin Stjernbrandt, Pål Graff, Ing-Liss Bryngelsson and Per Vihlborg in Toxicology and Industrial Health.
Kentucky Traffic Collision Facts 2015
Creators: name: Kentucky Transportation Center
name: Kentucky State Police
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2016
Subjects: subject: Transportation Engineering

description: KENTUCKY’S TRAFFIC COLLISION FACTS report for 2015 is based on collision reports submitted to the Kentucky State Police Records Branch. As required by Kentucky Revised Statutes 189.635, “every law enforcement agency whose officers investigate a vehicle accident of which a report must be made...shall file a report of the accident...within ten days after investigation of the accident upon forms supplied by the bureau.” The stated purpose of this requirement is to utilize data on traffic collisions for such purposes as will improve the traffic safety program in the Commonwealth. Data contained in this report are based solely on the observations and judgements of the state and local police officers who investigated each collision. The collision data is contained in an automatic system (Collision Report Analysis for Safer Highways) (CRASH). This system has edit checks for accuracy. Computer tabulations and summaries are again checked for accuracy before information is released or disseminated. It is hoped that the detailed information presented in the 2015 Kentucky Traffic Collision Facts report will, in fact, “improve the traffic safety program within the Commonwealth.”