American Scientific Research Journal for Engineering, Technology, and Sciences (ASRJETS)
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Study of the Spatial and Temporal Dynamics of Rainfall over the Period 1991-2020 in Burkina Faso
Get PDFThe spatial and temporal variability of rainfall is a major constraint for the development of socio-economic activities in Burkina Faso. The objective of this work is to study the spatial and temporal dynamics of rainfall across the country in order to guide policy measures for major disaster management. The methodology is based on the mapping of statistical metrics calculated on time series of annual cumulated rainfall from CHIRPS data and the annual number of rainy days estimated by the ANAM over the period 1991-2020. The results indicate an average variability in rainfall over the 1991-2020 normal. The persistence of drought in the Far West is accompanied by a loss of rainfall. The approach based on the two data sources presents similar information for the assessment of rainfall variability, complementary for the estimated rainfall trend areas, and the frequency of drought and contradictory for assessing the frequency of wet years
Survey on Path Planning of Mobile Robot with Multi Algorithms
Get PDFSensible practical environment for path and continuous motion preparation problems usually involves various operational areas coupled with indoor usage comprising of multiple apartments, corridors, a few doors and several static and active obstacles in between. The disintegration of this system into limited areas or regions indicates an effect on the fun preparation of appropriate pathways in a complex setting. Many algorithms are designed to solve problems with narrow passages and with optimal solution for more than one field. Independent mobile robot gadget would have felt the stability of its abilities, the steadfastness and the question of resilience with the project and the implementation of an innovative as well as an efficient plan with the best approach. Navigation algorithms reaching a certain sophistication in the field of autonomous mobile robot, which ensures that most work now focuses on more specialized activities such as efficient route planning and navigation across complex environments. Adaptive way to prepare and maneuver needs to establish learning thresholds, legislation to identify areas and to specify planned requirements of the library. The aim of this survey is studying many algorithms to view the advantage and disadvantage for each method then can use optimal method depended on this study
A Review of Emerging Photovoltaic Construction Technologies to Increase Efficiencies in Solar as a Renewable Energy Source
Get PDFThe need to reduce photovoltaic cell manufacturing and project development costs while focusing on providing cheap and highly efficient photovoltaic cells has led to the emergence of innovative technological advances in the photovoltaic cell materials and fabrication. This study carries out a systematic overview of the latest design technologies in the solar cell materials, shape and layout that have emerged and recorded high efficiencies. For each emerging solar cell technology, the most recent advances are outlined with their respective achieved theoretical efficiencies. Besides the silicon-based solar cells that have been highly commercialized with less than 20% theoretical power conversion efficiency (PCE) and currently having the largest market share, it has been found that the emerging technologies in solar cell materials and fabrication have recorded significantly improved efficiencies of up to 47%. Based on the ongoing research and developments in the engineering of photovoltaic cell materials, renewable solar energy promises a huge potential and growth towards global energy sustainability and this paper provides a guide in the policy making, commercialization and future investments in solar energy
An Enhanced Model for the Hydrodynamic Drag Force on a Steadily Translating Circular Cylinder
Get PDFA model for the hydrodynamic drag force on a steadily translating circular cylinder was studied for Reynolds number, Re << 1. Though the literature appears vast especially by method of rigorous asymptotic analysis, this work attempts to remove the mathematical complexity of asymptotic analysis by solving the Navier – Stokes equations directly to obtain the fluid velocity and then proceed to obtain the drag force and finally the drag coefficient which is a function of the Reynolds number. The result of this work is in complete agreement with the results in literature.
 
Composites: A Recurrent and Simuttaneously Current Innovation in the Aeronautics and Automobiles Sectors
Get PDFComposite materials are the union of two (or more) materials in order to optimize and combine the best characteristics of both, offering superior properties to the remaining components, having versatility, lightness and performance, which boosted their use in the aeronautical and automakers, which in turn have always been synonymous with progress and innovations in various technological fields. In this sense, regarding the materials segment, this work aims to present a brief discussion on the importance of composites and their application in the mentioned industries. Therefore, a bibliographic review was conducted in books, articles and other academic works relevant to the subject. It was found that, in contrast to traditional metallic materials, composites currently account for more than 50% of the weight of modern aircraft, reflecting positively on the aircraft’s efficiency, cost, efficiency and greater flight autonomy. Also, when evaluating the Advances of Appliance of Composites in the Automotive Sector, Modern Applications stand out mainly for ballistic and collision protection purposes, referring to alumina dispersed in LDP and tempered laminates of polymer matrix, respectively
Integration of Information Communication Technology (ICT) in Teaching Intermediate Science
Get PDFThe aimed of this study was to assess the performance of pupils in terms of ICT integration in teaching science in Grade IV-VI learners in Malaban Elementary School Biñan City, Laguna, and their disparity between the level of ICT integration in teaching and non-integration of ICT. In this analysis, the quantitative quasi-experimental method was used. The hypotheses for independent and dependent samples are tested using the t-test. The results revealed that ICT Integration in teaching Science 4,5, & 6 were effective than Non-ICT Integration based on the mean scores performance of the learners’ formative test and posttest which can be implied that the academic performance of the learners with ICT integration is much better than that of the non-ICT incorporated learners . Based on the result that the mean quality measures of the two classes of the learners are differently highly significant on their formative test and posttest. The results also revealed that in terms of pretest and posttest of experimental group found highly significance while for the comparison group found not significantly different except for GRADE IV found slightly significant. The authors proposed exploring the use of ICT in the incorporation of the other subjects related to the use of ICT in Science. They also recommend to the school heads that the teachers have as much as possible continuous training and seminars to enhance the skills and confidence of the teacher in using the technology
Offset of Carbon Emissions Due to Energy Use in Hospitals via Reforestation in Abandoned Mines. A Case Study in Chania, Crete, Greece
Get PDFClimate change mitigation requires the reduction of fossil fuels used in energy generation and their replacement with carbon-free energy sources. Carbon offsetting is a carbon removal option that can be achieved with several schemes including carbon sequestration by tree plantations. The possibility of offsetting part of carbon emissions due to energy use in the public hospital of Chania is investigated in the current research. The annual energy consumption in the hospital has been estimated at 12,840 MWh/year while its annual carbon emissions, due to energy use at 7,904 tnCO2/year. Several benign energy systems using renewable energies and low carbon energy technologies can be used to reduce its annual footprint. Reforestation of degraded land is an accepted method for offsetting carbon emissions via carbon sequestration. Reforestation of abandoned mines in an area at 100 ha in Prefecture of Chania can remove 1,000 tnCO2 annually corresponding at 12.65% of its total annual carbon emissions. The total cost of reforestation was evaluated at $ 250,000 while various external environmental and social co-benefits will be generated. It is indicated that nature-based solutions like reforestation of degraded land can be successfully used with affordable cost for offsetting part of carbon emissions in the public hospital of Chania.  
Calculate the Ground State Energy of Hydro Helium Cation (2+) (He++H)
Get PDFThe purpose of this work is to calculate the ground energy of hydro helium cation (2+) by using the Quantum Monte Carlo method. Using the Diffusion Quantum Monte method, we have to calculate the ground energy of hydro helium Cation (2+).our calculation is based on Slater-Jastrow form. We have developed python code and run this on high-performing computers. A very large number of iterations is required to find the best result. We have used the ‘Hartree unit’ in the calculation of electronic wave functions for atoms and molecules. 
A Review of TCP Congestion Control Using Artificial Intelligence in 4G and 5G Networks
Get PDFIn recent years, the field of research around the congestion problem of 4G and 5G networks has grown, especially those based on artificial intelligence (AI). Although 4G with LTE is seen as a mature technology, there is a continuous improvement in the infrastructure that led to the emergence of 5G networks. As a result of the large services provided in industries, Internet of Things (IoT) applications and smart cities, which have a large amount of exchanged data, a large number of connected devices per area, and high data rates, have brought their own problems and challenges, especially the problem of congestion. In this context, artificial intelligence (AI) models can be considered as one of the main techniques that can be used to solve network congestion problems. Since AI technologies are able to extract relevant features from data and deal with huge amounts of data, the integration of communication networks with AI to solve the congestion problem appears promising, and the research requires exploration. This paper provides a review of how AI technologies can be used to solve the congestion problem in 4G and 5G networks. We examined previous studies addressing the problem of congestion in networks, such as congestion prediction, congestion control, congestion avoidance, and TCP development for congestion control. Finally, we discuss the future vision of using AI technologies in 4G and 5G networks to solve congestion problems and identify research issues that need further study
Pattern of HIV and Reproductive Health Service Integration among PMTCT Clients in Addis Ababa, Ethiopia; 2022
Get PDFBackground: Human immuno-deficiency virus (HIV) and reproductive health (RH) care packages shared common bottlenecks of service inadequacy related to economy, limited access, gender inequality, and social discrimination among vulnerable women. RH-HIV integration help to cover a wide spectrum of health care to specific client and reduce missed opportunities for key amenities. Some of components for care amalgamation are ART provision and adherence, ANC, PMTCT services, family planning (FP) counseling, gender based violence (GBV), as well as STI and cervical cancer screening and treatment, safe abortion and post abortion care. Objective: The purpose of this study was to investigate the pattern of HIV and reproductive health services integration for HIV-positive women in Addis Ababa, Ethiopia. Method: Cross sectional exploratory qualitative study design was utilized in Addis Ababa city in May to August 2020. Information was gathered through an in-depth/ key-informant interview and 14 mentor mothers were selected from different health centers through snowball sampling technique. Result: Twelve mentor mothers were participated in in-depth interview with a mean age of 31.25 years with SD of ± 3.86. About half of mentor mother served MSG/ PMTCT for 2-4 years. They clarified that PMTCT service was an entry point for HIV care and support to most women and infants. Components mentioned for RH and HIV care were HIV testing and counseling (HTC), provision of ART and adherence counselling, family planning, sexually transmitted illnesses (STIs) and cervical cancer screening and treatment. But some of barriers that blocked integration of services were imbalance of client and care provider ration, long waiting time, skill gaps, unaffordable cost, and lack of clear guideline. Conclusion: According to this study, integration of RH and HIV is not well established and integration constraints that related to client and health care provider side needs to be eliminated