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Optimising Energy Consumption in SD-DCN Networks (Software Defined-Data Center Network)

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Open Journal of Applied Sciences 2024年第8期14卷 2223-2235页

作者： Narcisse Tahi etienne soro Pacôme Brou Olivier Asseu UMRI STI INPHB INPHouphout Boigny Yamoussoukro Cte dIvoire Ecole Suprieure Africaine des Technologies de lInformation et de la Communication (ESATIC) LASTIC Laboratory of ESATIC Abidjan Cte dIvoire

Over the last decade, the rapid growth in traffic and the number of network devices has implicitly led to an increase in network energy consumption. In this context, a new paradigm has emerged, Software-Defined Networking (SDN), which is an emerging technique that separates the control plane and the data plane of the deployed network, enabling centralized control of the network, while offering flexibility in data center network management. Some research work is moving in the direction of optimizing the energy consumption of SD-DCN, but still does not guarantee good performance and quality of service for SDN networks. To solve this problem, we propose a new mathematical model based on the principle of combinatorial optimization to dynamically solve the problem of activating and deactivating switches and unused links that consume energy in SDN networks while guaranteeing quality of service (QoS) and ensuring load balancing in the network.

关键词： DCN Optimisation Energy Consumption QoS SDN

An Extended Sliding Mode Observer for Speed, Position and Torque Sensorless Control for PMSM Drive Based Stator Resistance Estimator

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Intelligent Control and Automation 2016年第1期7卷 1-8页

作者： Pierre Tety Adama Konaté Olivier Asseu etienne soro Pamela Yoboué Institut National Polytechnique Houphouet Boigny (INPHB) Yamoussoukro Cote d’Ivoire Ecole Supérieure Africaine des Technologies de l’Information et de la Communication (ESATIC) Abidjan Cote d’Ivoire

This paper presents a robust sixth-order Discrete-time Extended Sliding Mode Observer (DESMO) for sensorless control of PMSM in order to estimate the currents, speed, rotor position, load torque and stator resistance. The satisfying simulation results on Simulink/Matlab environment for a 1.6 kW PMSM demonstrate the good performance and stability of the proposed ESMO algorithm against parameter variation, modeling uncertainty, measurement and system noises.

关键词： PMSM Extended Sliding Mode Observer Feedback Control

Phoneme Sequence Modeling in the Context of Speech Signal Recognition in Language “Baoule”

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Engineering（科研） 2016年第9期8卷 597-617页

作者： Hyacinthe Konan etienne soro Olivier Asseu Bi Tra Goore Raymond Gbegbe Ecole Supérieure Africaine des Technologies d’Information et de Communication (ESATIC) Abidjan C?te d’Ivoire Institut National Polytechnique Félix Houphou?t Boigny (INP-HB) Yamoussoukro C?te d’Ivoire

This paper presents the recognition of “Baoule” spoken sentences, a language of C?te d’Ivoire. Several formalisms allow the modelling of an automatic speech recognition system. The one we used to realize our system is based on Hidden Markov Models (HMM) discreet. Our goal in this article is to present a system for the recognition of the Baoule word. We present three classical problems and develop different algorithms able to resolve them. We then execute these algorithms with concrete examples.

关键词： HMM MATLAB Language Model Acoustic Model Recognition Automatic Speech

Elicitation of Association Rules from Information on Customs Offences on the Basis of Frequent Motives

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Engineering（科研） 2018年第9期10卷 588-605页

作者： Bi Bolou Zehero etienne soro Yake Gondo Pacome Brou Olivier Asseu Institut National Polytechnique—Houphouet Boigny YamoussoukroCote d’Ivoire Ecole Superieure Africaine des TIC-ESATIC Abidjan-TreichvilleCote d’Ivoire Universite Felix Houphouet Boigny Abidjan-CocodyCote d’Ivoire

The fight against fraud and trafficking is a fundamental mission of customs. The conditions for carrying out this mission depend both on the evolution of economic issues and on the behaviour of the actors in charge of its implementation. As part of the customs clearance process, customs are nowadays confronted with an increasing volume of goods in connection with the development of international trade. Automated risk management is therefore required to limit intrusive control. In this article, we propose an unsupervised classification method to extract knowledge rules from a database of customs offences in order to identify abnormal behaviour resulting from customs control. The idea is to apply the Apriori principle on the basis of frequent grounds on a database relating to customs offences in customs procedures to uncover potential rules of association between a customs operation and an offence for the purpose of extracting knowledge governing the occurrence of fraud. This mass of often heterogeneous and complex data thus generates new needs that knowledge extraction methods must be able to meet. The assessment of infringements inevitably requires a proper identification of the risks. It is an original approach based on data mining or data mining to build association rules in two steps: first, search for frequent patterns (support >= minimum support) then from the frequent patterns, produce association rules (Trust >= Minimum Trust). The simulations carried out highlighted three main association rules: forecasting rules, targeting rules and neutral rules with the introduction of a third indicator of rule relevance which is the Lift measure. Confidence in the first two rules has been set at least 50%.

关键词： Data Mining Customs Offences Unsupervised Method Principle of Apriori Frequent Motive Rule of Association Extraction of Knowledge

A Genetic Algorithm for Overall Designing and Planning of a Long Term Evolution Advanced Network

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American Journal of Operations Research 2016年第4期6卷 355-370页

作者： Brou Aguié Pacôme Bertrand Diaby Moustapha soro etienne Oumtanaga Souleymane Aka Boko Laboratoire des Mathématique Informatique (LMI) Université Nangui Abrogoua (UNA) Abidjan (Axe Adjamé-Abobo) C?te d’Ivoire Laboratoire de Recherche en Informatique et Télécommunication (LARIT) Institut National Polytechnique-Houphouet Boigny (INP-HB) Abidjan C?te d’Ivoire Direction de Recherche et l’Innovation Technologique (DRIT) école Supérieure Africaine des Technologies Information et de la Communication (ESATIC) Abidjan C?te d’Ivoire

In the mobile radio industry, planning is a fundamental step for the deployment and commissioning of a Telecom network. The proposed models are based on the technology and the focussed architecture. In this context, we introduce a comprehensive single-lens model for a fourth generation mobile network, Long Term Evolution Advanced Network (4G/LTE-A) technology which includes three sub assignments: cells in the core network. In the resolution, we propose an adaptation of the Genetic Evolutionary Algorithm for a global resolution. This is a combinatorial optimization problem that is considered as difficult. The use of this adaptive method does not necessarily lead to optimal solutions with the aim of reducing the convergence time towards a feasible solution.

关键词： Overall Planning 4G/LTE-A Network Genetic Algorithm

Photovoltaic waste management in sub-Saharan Africa:current practices in Burkina Faso

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Waste Disposal and Sustainable Energy 2024年第2期6卷 271-282页

作者： Kodami Badza Yrebegnan Moussa soro Marie Sawadogo Laboratoire Energies Renouvelables et EfficacitéEnergétique Institut International d'Ingenierie de I'Eau et de I'Environnement(2iE)01 BP 594 OuagadougouBurkina Faso

Sub-Saharan Africa is witnessing a proliferation of photovoltaic(PV)waste due to the increasing number of solar PV power *** waste(panels,batteries,electrical cables,mounting structures,and inverters)consists of elements such as mercury,cadmium,chromium,lead,copper,aluminum,fluorinated compounds,and plastics that are toxic to human health and the environment if a proper management system is not *** many studies worldwide have focused on PV waste management,very few have been conducted in sub-Saharan *** study aims to investigate the current PV waste management system in Burkina Faso,determine stakeholder profiles,and propose strategies to enhance the existing *** research,interviews,questionnaires,and field visits were used in the *** survey showed that young people,mainly under 30 years of age and with a primary education,dominate(70%)in terms of PV waste collection and repair activities,while the more technical recycling and export activities are carried out mainly(88%)by stakeholders older than 40 years and with a secondary education(60%).Among the older stakeholders,100%are aware of the hazardous nature of PV waste,whereas 36%are young *** an environmental perspective,the main source of contamination observed is the release of lead-rich sulfuric acids into water and soil during the collection and repair *** the recycling of batteries and electrical cables,toxic fumes are emitted into the air,and recycling residues rich in toxic substances are *** reduce risks to human health and the environment when managing PV waste,the introduction of legislation,the multiplication of collection points and appropriate infrastructures,the training and awareness-raising of stakeholders,and the extended responsibility of manufacturers are *** on the economic feasibility of setting up formal management structures are needed to complete this work.

关键词： Photovoltaic waste Sub-Saharan Africa Waste management Recycling Batteries Incineration

Impact of Beekeeping on the Wild Bee Diversity in Northern Ivory Coast(West Africa)

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Research in Ecology 2024年第1期6卷 6-13页

作者： Drissa Coulibaly Mouhamadou Koné Yalamoussa Tuo Kolo soro Kouakou Hervé Koua Department of Animal Biology Biological Sciences UnityUniversity Peleforo Gon CoulibalyBP 1328KorhogoIvory Coast Biosciences Unity Department of ZoologyAnimal Biology and EcologyUniversity Felix Houphouët-Boigny22 BP 1611 Abidjan 22Ivory Coast

In Ivory Coast,beekeeping takes an important place among the major economic *** contributes to improv-ing the population’s livelihoods thanks to its derived products which are honey,propolis,wax and royal ***-ever,the installation of honey bee hives could put pressure on wild bee species,which often live ***,these wild bees are excellent pollinators of cultivated and wild *** study aimed to assess the effect of honey bee hives on the diversity of wild *** methodology approach consisted of capturing bees in three different plots inside the forest fragment of the botanical garden located at the University Peleforo Gon *** first plot was chosen approximately from 10 m to an apiary containing ten *** two other plots were chosen to be 200 m and 400 m from the apiary,*** were captured once a month for three months using pan traps(UV—blue,yellow and white).A total of 17 bee species belonging to three families(Apidae,Megachilidae and Halictidae)were *** furthest plot from the apiary was the most diverse(H’=2.49)and that near the apiary was the least diverse(H’=0.11).Only,two wild bee species,Hypotrigona *** Thrinchostoma petersi,persisted inside the plot nearby the apiary where honey bees were most *** furthest plots from the apiary seem to have the highest diversity of wild *** findings are very relevant because they can be used for the policies of conservation of wild bees and the management of beekeeping activities.

关键词： Honey bee Apiary Hive Conservation Korhogo

Hydrogeochemical and Groundwater Quality Studies in the High Bandama Watershed at Tortiya (Northern of Côte d’Ivoire)

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Journal of Geoscience and Environment Protection 2019年第2期7卷 49-61页

作者： Tanina Drissa soro Gbombélé soro Kouassi Ernest Ahoussi Yéi Marie Solange Oga Nagnin soro Unit Training and Research in Environment University Jean Lorougnon Guédé Daloa Ivory Coast Unit Training and Research in Earth Science University Félix Houphou&#235 t Boigny Abidjan Ivory Coast

Hydrochemical and groundwater quality of High Bandama watershed were investigated through thirty-five (35) samples composed of boreholes, hand pump wells and traditional wells. The analysis of physico-chemical parameters shows that groundwater is acidic with pH ranges from 3.2 to 6.9 and mean of 5.4. Electrical conductivity (EC) values were generally low and minimum and maximum were respectively 77 μS/cm and 553 μS/cm with an average of 250.3 μS/cm. Major cations (Ca2+, Mg2+, Na+ and K+) were also generally low. Ca2+ and Mg2+ are being the most dominants cations with concentration values ranges from 4 - 56 mg/l and 0 - 55 mg/l respectively with mean value of 18.11 and 15.31 mg/l. HCO3? is the most dominant anion with minimum and maximum values ranging from 5 to 215 mg/l. According to WHO guidelines, groundwater quality is good for drinking. Piper diagram classified the hydrogeochemical facies into Ca-HCO3 (48.57%), Ca-Mg-HCO3 (31.43%), Ca-Mg-Cl (17.14%) and Na-Cl (2.86%) water type with one sample for Na-Cl. Compositional relation with plot of Ca + Mg versus HCO3 + SO4 and Chloro Alkaline Indice (CAI) confirms that the majority of groundwater samples (66.67%) exchange their ions Ca and Mg with Na and K from aquifer materials. Gibbs diagram showed that the rock-water interaction or weathering is the dominant process responsible of water chemistry.

关键词： Groundwater Hydrochemical Methods Waters Types High Bandama Watershed

Effects of Stone Barriers on Soil Physicochemical Characteristics under Cotton (<i>Gossypium hirsutum</i>L.) Cropping Fields Northern of Côte d’Ivoire

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Open Journal of Soil Science 2021年第9期11卷 435-447页

作者： Loua Barthélémy Diomande Sibirina soro Gaoussou Roger soro Albert Yao-Kouame University Peleforo Gon Coulibaly of Korhogo Agropastoral Management Institute Laboratory of Geoscience Water and Environment Korhogo C&#244te d’Ivoire University Peleforo Gon Coulibaly of Korhogo Agropastoral Management Institute Laboratory of Plant Biology Production and Protection Korhogo C&#244te d’Ivoire NGO Rural Animation of Korhogo (ARK) Korhogo C&#244te d’Ivoire University Félix Houphouët-Boigny Training and Research Unit of Earth Sciences and Mineral Resources Department of Soil Sciences Abidjan C&#244te d’Ivoire

In the north of Cote d’Ivoire, the rural economy is heavily dependent on cotton cultivation which is characterized by low yield. One of the main causes of low productivity is low level of soil fertility caused by erosion. The stone barriers technique is used to fight against erosion and to improve soil fertility. This work was carried out to assess the effects during 1-year-old stone barriers on selected soil physicochemical properties on two geographical locations where soil samples from 0 to 30 cm depth were selected. A total of 60 composite soil samples (30 × 2) were collected. One year after installing the stone bunds in cotton cultivation, the soil was sampled under the same conditions. The soil samples were analyzed for pH (H2O), organic carbon (SOC), total nitrogen (TN), available phosphorus (Av.P), cation exchange capacity (CEC), exchange bases (Ca, K, Mg, Na) and particle size (clay, coarse silt and sand) contents. The results show that the stone bunds significantly increased the water pH, the soil levels of calcium, magnesium, silt and coarse sand. On the other hand, they significantly lowered the levels of assimilable phosphorus, clay and fine sand in soils. CEC and soil carbon, nitrogen, potassium, sodium and fine silt content did not vary significantly. This study must be repeated in the years to come in order to determine the impact of stone barriers in the medium and long term on soil fertility in the north of Côte d’Ivoire.

关键词： Cotton Productivity Stone Barriers Physicochemical Grain Yield Côte d’Ivoire