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SAGeLogE: A decision Support System for Students’ Accommodation Management

Journal of Computer and Communications 2024年第3期12卷 107-145页

作者： Rôlin Gabriel Rasoanaivo Pascale Zaraté Institut de Recherche en Informatique de Toulouse (IRIT) ADRIA Toulouse France Université Toulouse Capitole Toulouse France faculté des sciences et technologies Université de Toamasina Toamasina Madagascar

SAGeLogE is the acronym of “Système d’Aide à la gestion de Logements étudiants” which means student accommodation management support system. It’s a multi-criteria decision support system designed to manage accommodation allocation for university students. Within SAGeLogE we developed the “Minimum of Ranks” (MIRA) aggregation method. MIRA method involves the application of multi-criteria decision-making methods (MCDM) to initially obtain different ranking. Thus, we chose the Weighted Sum Method (WSM), Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) and Combined Compromise Solution (CoCoSo) methods to be implemented in SAGeLogE. To prioritize the weights of criteria, the Anality Hierarchy Process (AHP) method was used. The interest of using the MIRA method was to obtain a compromised ranking coming from these three multi-criteria decision-making methods (WSM, TOPSIS, CoCoSo). So, we know that the accommodation to be allocated to students is always lower than the number of accommodation requests received by the organization. Thus, SAGeLogE proposed a technique that makes it easier to select students ranked by the multi-criteria decision-making and MIRA methods according to a method of calculation of quota of available accommodations within university residences. Finally, university accommodation managers had a wide choice of student ranking according to the methods implemented in SAGeLogE. The SAGeLogE experiment was carried out on the site of Toamasina University in Madagascar for an academic year with 2026 student accommodation applications received. The experimentation showed the ability of SAGeLogE to achieve the result.

关键词： MIRA Method MCDM Accommodation Quota SAGeLogE

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On the Charting Procedures: MEWMA Chart and DD-Diagram

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Open Journal of Statistics 2015年第5期5卷 373-381页

作者： Mekki Hajlaoui faculté des sciences economiques et de gestion de Mahdia Université de Monastir Mahdia Tunisia

In light of rapid development of customer requirements, control procedures of quality concept use multivariate analysis. This is because of recent advances in information technology and in recording. The charting procedures are based on Mahalanobis distance but their performance needs normality and a type-I error rate choice. The DD-diagram is an alternative scheme that uses data depth to avoid these conditions rarely met in practice. For a given error-free sample, the performance of DD-diagram and that of multivariate EWMA control procedures are compared through a real example on individual observations taken from a multivariate quality process.

关键词： Multivariate Data Quality Control Mahalanobis Distance MEWMA Chart Data depth DD-Diagram

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Analysis of the impacts of socioeconomic factors on hiring an external labor force in tilapia farming in Southern Togo

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Aquaculture and Fisheries 2021年第2期6卷 216-222页

作者： Kodjo N’Souvi Chen Sun Aklesso Egbendewe-Mondzozo Koffi Kafui Tchakah Bortey Nketia Alabi-Doku College of Economics and Management Shanghai Ocean University201306ShanghaiChina faculte des sciences economiques et de gestion(FaSEG) Universite de LomeP.O.Box 1515LomeTogo faculte des sciences economiques Sociales et de GestionUniversite de Reims Champagne-Ardenne51096Reims CedexFrance

This study analyzed the financial profitability and the impacts of socioeconomic factors on hiring an external labor force in tilapia farming in Southern *** obtained the primary data from 75 randomly selected tilapia farmers for socioeconomic analysis by a structured *** regression and return on investment(ROI)were performed to analyze the influence of socioeconomic factors on the decision of tilapia farmers to hire an external labor force and financial profitability of tilapia farming in the study area,*** results indicate that tilapia farming contributes to employment opportunities in the study ***,the key variables such as economic diversification,farming experience and educational attainment significantly affect the farmers’decision to hire an external labor force in their ***,tilapia farming is a profitable activity based on the positive mean gross margin and mean net farm *** ROI was 0.31,which implies that a return of USD 0.31 was obtained for the investment of every single *** government must pay more attention by organizing training or re-training workshops for tilapia farmers,which would improve their socio-economic status.

关键词： Tilapia Economic returns Hired labor force Logit model Return on investment Southern Togo

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Fundamental calculus of the fractional derivative defined with Rabotnov exponential kernel and application to nonlinear dispersive wave model

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Journal of Ocean Engineering and Science 2021年第2期6卷 196-205页

作者： Mehmet Yavuz Ndolane Sene department of Mathematics and Computer sciences Faculty of ScienceNecmettin Erbakan University42090 KonyaTurkey department of Mathematics College of EngineeringMathematics and Physical SciencesUniversity of ExeterCornwall TR10UK Laboratoire Lmdan Département de Mathématiques de la DécisionUniversitéCheikh Anta Diop de DakarFacultédes Sciences Economiques et GestionBP 5683 Dakar FannSenegal

Before going further with fractional derivative which is constructed by Rabotnov exponential kernel,there exist many questions that are not *** this paper,we try to recapitulate all the fundamental calculus,which we can obtain with this new fractional *** problems in this paper are to determine the solutions of the fractional differential equations where the second members are constant functions,polynomial functions,exponential functions,trigonometric functions,or Mittag-Leffler *** all the fractional differential equations,the obtained solutions are represented *** Laplace transform of the fractional derivative with Rabotnov exponential kernel is the primary tool in the ***,we give the fundamental solution to the nonlinear time-fractional modified degasperis-Procesi equation by considering the fractional operator with Rabotnov exponential kernel.

关键词： Fractional differential equation Nonlinear dispersive wave model Rabotnov exponential kernel Mittag-Leffler function Laplace transformation

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EXISTENCE OF POSITIVE SOLUTIONS FOR A CLASS OF PARABOLIC EQUATIONS WITH NATURAL GROWTH TERMS AND L^1 DATA

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Acta Mathematica Scientia 2014年第4期34卷 1127-1144页

作者： Kaouther AMMAR Hicham REDWANE department of Mathematics Faculty of sciencesTaibah UniversityP.O. Box 344 Al MadinahSaudi Arabia facult'e des sciences Juridiques Economiques et SocialesUniversit'e Hassan 1B.P. 784SettatMorocco

We study a class of nonlinear parabolic equations of the type：δb（u）/δt-div（a（x,t,u）△u）＋y（u）｜△u｜^2=f,where the right hand side belongs to L^1（Q）, b is a strictly increasing C^1-function and -div（a（x, t, u）△u） is a Leray-Lions operator. The function g is just assumed to be continuous on R and to satisfy a sign condition. Without any additional growth assumption on u, we prove the existence of a renormalized solution.

关键词： renormalized solutions natural growth terms L^1 data

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Firm Size, Innovation and Vertical Integration Incentives： The Case of Food Supply Chain

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Chinese Business Review 2016年第2期15卷 94-102页

作者： Amina Omrane Mohamed Amine Benmehaia faculte des sciences economiques et de gestion de Sfax (FSEGS) Sfax Tunisia Ecole Nationale SupErieure d'Agronomie Alger Algeria

This study aims to investigate and explore the relationship between vertical integration and the firm＇s innovativeness in food supply chain. For doing so, a two-stage least-squares model was used. It encompassed instrumental variables that attempt to describe the effective determinants of firm＇s vertical integration willingness. Results based on data concerning a set of 130 food-manufacturing firms, highlighted that vertical integration of a firm is strongly affected by internal incentives such as innovation rate and firm size. Moreover, it is simultaneously influenced by the economies of scale and some structure incentives. To conclude, results indicate globally that important and statistically significant differences exist across the studied firms and the small effective ones which acquire a high level of vertical integration.

关键词： vertical integration firm size performance innovation food supply chain

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Morphometric Differentiation between Two Closely Related Achatinid Snails (Gastropoda: Achatinidae) of West Africa and Implications for the Conservation of <i>Achatina togoensis</i>(Bequaert &Clench, 1934)

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Open Journal of Animal sciences 2021年第4期11卷 559-579页

作者： Komlan Mawuli Afiademanyo Kwami Lumo Awaga Kamilou Ouro-Sama Hodabalo Dheoulaba Solitoke Laboratoire d’Ecologie Animale et d’Ecotoxicologie Département de Zoologie et de Biologie Animale Faculté des Sciences Université de Lomé Togo Département de Biochimie Faculté des Sciences Université de Lomé Togo Laboratoire de gestion Traitement et Valorisation des Déchets (GTVD) Faculté des Sciences Université de Lomé Togo

Achatina togoensis is a giant land snail taxa endemic to the northern sectors of the Monts Togo, which has been regarded as full species or subspecies of the highly variable, widespread A. achatina (L.). To address this issue, samples of snails were taken throughout the distribution range of the two taxa in the Dahomey Gap (West Africa) and separated into 112 A. achatina and 141 A. togoensis according to color of the columella and parietal wall. Radulae were compared and shell characters of these 2 species were evaluated through the traditional morphometric method. The results indicate that the species cannot be distinguished by overall shell size and radular morphology, but they exhibit significant differenc

关键词： Shell Morphometry Radulae Achatina achatina Achatina togoensis West Africa

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Quantitative Assessment of Vulnerability to Flood Hazards in Downstream Area of Mono Basin, South-Eastern Togo: Yoto District

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Journal of Geographic Information System 2015年第6期7卷 607-619页

作者： Abravi Essenam Kissi Georges Abbevi Abbey Komi Agboka Aklesso Egbendewe Département de Géographie WASCAL Université de Lomé Lomé Togo Ecole Supérieure d’Agronomie Université de Lomé Lomé Togo faculté des sciences economiques et de gestion Université de Lomé Lomé Togo

The population located along Mono River in the Yoto district faces great challenges in terms of repeated flood disasters in recent years. This paper aims at assessing the conditions which influence flood damage in the study area by using indicators to compute a Flood Vulnerability Index (FVI). The study relies on Turner?et al.’s vulnerability framework and distinguishes three main components (exposure, susceptibility and resilience) that allow a more in-depth analysis and interpretation of local indicators. As a result flood disaster in the study area is not only due to the extreme variability in terms of flood magnitude and frequency in the Mono River, but also to the interaction between human and the environment. The lack of vegetation along the river bank, the closeness of households’ farmlands to the river body, the type of construction and the position of settlements, the household size, the low level education of household head, the lack of diversification of livelihood strategies, the lack of adequate flood warning system, the lack of willingness and ability to take responsive actions coupled with inadequate emergency services, are identified as main determinants increasing communities’ vulnerability to flood disaster. Furthermore, the computation of Flood Vulnerability Index (FVI) offers easy comparison of communities’ vulnerability to flood disaster and pinpoints the most vulnerable communities. At the end of the study, flood exposure, susceptibility, resilience and vulnerability maps were generated.

关键词： Assessment Flood Quantitative Vulnerability Downstream Mono River Basin Yoto District

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Diet and Food Consumption of the African Catfish, <i>Chrysichthys nigrodigitatus</i>Lacépède (1803) (Siluriformes: Claroteidae), from the Hydrosystem Lake Togo-Lagoon of Aného (South of Togo)

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Journal of Environmental Protection 2020年第11期11卷 954-976页

作者： Kamilou Ouro-Sama Komlan Mawuli Afiademanyo Hodabalo Dheoulaba Solitoke Gnon Tanouayi Tchaa Esso-Essinam Badassan Housséni Ahoudi Kissao Gnandi Laboratoire de gestion Traitement et Valorisation des Déchets (GTVD) Faculté des Sciences Université de Lomé Lomé Togo Laboratoire d’Ecologie Animale et d’Ecotoxicologie Département de Zoologie et Biologie Animale Faculté des Sciences Université de Lomé Lomé Togo

Catfishes belonging to the genus Chrysichthys are generally important fish species in inland water bodies of Africa because of their high commercial value. Among them, C. nigrodigitatus could represent, at certain periods of the year the highest biomass of the littoral ichthyofauna, accounting for 17 to 43.8% of total catches. In this paper, its diet in the hydrosystem Lake Togo-Lagoon of Aného was investigated focusing on how differences in diet and food consumption are related to size, season and sexual maturity. A total of 195 males and 137 females were sampled from January to december 2017. The digestive tract of each individual was dissected and its content was analyzed, using indexes of stomach contents analysis method. Diet variability in relation to season and biometric parameters was also studied. About 99 stomachs were empty with an overall vacuity index of 29.82%. However, vacuity index was found to vary in relation to fish size and months. The fish has been found to be omnivorous with a carnivorous tendency consuming a wide range of prey items (H = 3.34). Juvenile and adult freshwater clams (Galatea paradoxa) were the numerical dominant preys (%N = 44%) while the penaeid shrimps (Farfantepenaeus notialis) with an annual frequency of occurrence (Fo) of 49.36% and all species confused of fish (33.91%) were the most preferred preys. The index of relative importance (IRI) reveals that freshwater clam (40.49%), penaeid shrimps (35.85%) and all species confused of fish (14.58%) were the most important preys of C. nigrodigitatus. The dominance of Malacostraca and Mollusca in the diet of C. nigrodigitatus in the hydrosystem Lake Togo-Lagoon of Aného is likely one of the more important considerations for future management plans.

关键词： Chrysichthys nigrodigitatus Food Item Feeding Ecology Lake Togo Lagoon of Aného

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Agro-Morphological Variability in Eight Bambara Groundnut (Vigna subterranea (L.) Verdc.) Morphotypes from Zinder (Niger)

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Agricultural sciences 2023年第1期14卷 1-10页

作者： Oumarou Zango Rabiou Abdou Saley Adamou Salamatou Agbo So Timothée Kouassi Bakasso Yacoubou Département de Biologie Faculté des Sciences et Techniques Université André Salifou de Zinder Zinder Niger Laboratoire de gestion et Valorisation de la Biodiversité au Sahel Département de Biologie Faculté des Sciences et Techniques Université Abdou Moumouni Niamey Niger

Bambara groundnut (Vigna subterranea (L.) Verdc.) has economic importance for the producers and the traders as cash crop since it generates substantial income for households in Niger. The objective of this study was to assess eight (8) Bambara groundnut morphotype from Université André Salifou de Zinder in Niger Republic by their morphological and agronomic characters. The experiment was conducted in a randomized complete block design with three replications during the rainy season of 2020-2021. Data were collected on the Number of leaves, Plant height (cm), Growth habit (cm), Terminal leaflet length, Terminal leaflet width, Number of nodes/stem, Number of stems/plant, Number of pods/plant, Weight of 100 pods (g), Weight of 100 seeds (g), Length of seeds (mm), Width of seeds (mm), Weight of seeds/Plot (kg). There were significant differences for all characters, except Number of leaves, Terminal leaflet length, Terminal leaflet width, Length of seeds (mm) Weight of 100 pods (g), Weight of 100 seeds (g). The morphotypes UZ-VZ-04, UZ-VZ-03, UZ-VZ-06, UZ-VZ-02 and UZ-VZ-05 have demonstrated good performance for grain weight per plot and can be useful for a breeding program.

关键词： Vigna subterranea Accessions Agro-Morphological Traits Weight of 100 Seeds

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