Zuonaki Ongodiebi, Solomon Ndubuisi Eluozo, Ndiwari Ebikiton |
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| Application of Predictive Model on Alluvia Influences to Monitor Transport of Thermotolerant In Coarse Environment | ||||||
Coastal areas are influenced by numerous environmental factors. This research has evaluated the transport system by considering the behaviour of Thermotolerant depositions species in the coastal environment. The transport process of Thermotolerant in homogeneous coarse formation can only investigated if the study precisely monitors the process in these phases, which will enable others to determine the variation of the Thermotolerant behaviour at various formation. The study shows that permeability has been confirmed to deposit high percentage in most region of the strata..........
predictive, alluvia influences, Thermotolerant, and coarse formation.
[1]. Hirtzel, C.S. and R. Rajagopalan, 1985. Colloidal phenomena – advanced topics. Noyes Publications, Park Ridge, N.J., USA.
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Simbeye Raphael, Mulenga Michael |
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| An Investigation of Perceptions on the Suitability of Rammed Earth in the Construction of Affordable Housing Units in Zambia | ||||||
Housing is one of the basic necessities of mankind known to affect human health and well being. Since 1964, Zambia has been struggling with the provision of housing in urban areas. Zambia's urban population rose by 52% from 5,173,450 to 7, 844,628, between 2010 to 2022. The current housing deficit is estimated at over 2,000,000 housing units compared to 860,000 units estimated in 1996. This study aimed at exploring the use of stabilised rammed earth in the construction of affordable housing units in Zambia........
Affordable Housing, Perceptions, Stabilized Rammed Earth
[1]. Amu, O.O. et al. (2008) 'Effects of Palm Kernel Shells in Lateritic Soil for Asphalt Stabilization', Research Journal of Environmental Sciences, 2(2). Available at: https://doi.org/10.3923/rjes.2008.132.138
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J. M. de Oliveira Júnior, R. L. R. Gomes |
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| Selection of Method for Supplier Development and Ranking in a Company Providing IT Outsourcing Solutions | ||||||
The conception of a supplier management model for an outsourcing services company arose from challenges related to delivery deadlines and lack of planning. Material procurement was carried out with local suppliers after the contract closure with the client, resulting in no timeframe for negotiation or selection of alternative suppliers. Following an examination of the purchasing sector, it was discerned that there was a need to broaden the spectrum of suppliers and establish new partnerships to enhance excellence in the supply chain processes. The research was conducted through a qualitative approach, employing a bibliographic review that delved into the investigated theme, focusing on research sources such as books and articles..........
Suppliers; Purchasing Sector; Supply Chain; Multicriteria Model.
[1]. Pinho, R. R. de. (2019). Multicriteria decision support model for the selection of tinplate suppliers - A case study at CAN company. (Master's thesis, Polytechnic Institute of Porto- APNOR).
|
Ashok K Sinha |
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| An Intelligent Dynamic Model of Economic Development with Sustainable Goals | ||||||
In developing nations there has been an enduring discussion among economists and researchers on defining economic growth and economic development [1-2]. While economic growth, commonly expressed in terms of gross domestic product (GDP), reflects the productivity of natural resources, labor and capital, the economic development encompasses the human development index (HDI) ,a combination of education index(EI) ,health index(HI) and per capita income(PCI) as defined by UNDP in 1990[3].Over the past decades many studies have been done by researchers dealing with modeling of GDP and human development separately ,however no machine learning based computational model has emerged so far to model an evolutionary economic development process integrating the two facets of national economy ,GDP and HDI in a sustainable manner..........
GDP, HDI,GNI,MYS,LFE, ANN ,ML ,GA, AI
[1]. Amartya Sen," Development as Freedom",1999
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Ganesh O. Gupta, Greegory Mathew, Vijaya Kumar N. Kottur |
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| Optimization of Process Parameters in Wire Electrical Discharge Machining of D3 Steel | ||||||
D3 steel, known for its hardness and tenacity, is difficult to machine. This research uses Wire Electrical Discharge Machining (WEDM)'s non-contact nature to better understand how machining factors affect surface quality. WEDM is used to optimise D3 steel machining characteristics such surface roughness, taper angle, and machining time. The study uses Taguchi Optimization Method and Multi-objective Grey Relational Analysis to examine the effects of Pulse On Time, Pulse Off Time, Dielectric Pressure, Fine Pulse Current, Wire Feed Rate, Wire Tension, Servo Voltage, and Servo Feed Rate. The research uses these methods to find the best parameter values for D3 steel machining that improve surface quality, taper angle..........
surface roughness, taper angle, machining time, d3 steel, wire electrical discharge machining (WEDM), Taguchi optimization method, grey relational analysis.
[1]. Vignesh, M., & Ramanujam, R. (2018). Response optimisation in wire electrical discharge machining of AISI H11 tool steel using Taguchi - GRA approach. International Journal of Machining and Machinability of Materials, 20(5), 474. https://doi.org/10.1504/ijmmm.2018.096037
|
Sanjit Kumar Paul |
||||||
| Effects of Charge Fluctuating Negative Dust on Nonlinear Ion-acoustic Waves | ||||||
The non-linear propagation of the ion-acoustic waves (IAWs) in a dusty plasma consisting of Boltzmanndistributed electrons and ions, mobile charge fluctuating negative dust and charge fluctuating stationary negative dust has been theoretically investigated. It has been shown that the dust charge fluctuation is a source of dissipation, and is responsible for the formation of DA shock waves in such a dusty plasma. The basic features of the DA shock waves have been identified in this investigation which could be useful in understanding the properties of localized space dusty plasmas. It has been proposed to design a new laboratory experiment, which will be able to identify the basic features of the dust-acoustic shock waves predicted in this theoretical investigation.
Charge fluctuation, linear dust-acoustic waves, dusty plasmas, shock waves.
[1]. D. A. Mendis and M. Rosenberg, "Cosmic dusty plasma", Annu. Rev. Astron. Astrophys., vol.32, pp. 418-463, Sep.1994.
|
Devakirubanithi D, Jeba Jesintha J |
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| Odd Graceful Labeling of Few Graphs | ||||||
Odd graceful labeling[4] is to inject whenever the edge is identified the label , so that the resulting edge labels are In this paper, we showed that a few graphs such as twig diamond graphs without prime edge coupled with pendent edges, SSG coupled with star graph, super subdivision of comb graphand bistar graph are odd graceful.
Odd graceful labeling, Star graph, Twig diamond Graph, Comb graph, Sub-divided shell graph, Super subdivision.
2010 Mathematics Subject Classification: 05C78 [1]. Gallian J A, " A dynamic survey of Graph labeling", The Electronic Journal of Combinatorics, (20210), pp. 77-81.
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Sandra Medina Benini, Jeane Aparecida Rombi de Godoy |
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| Governance and Citizen Participation: Foundations for Sustainable Development and Participatory Democracy in Brazil | ||||||
Thistextaddressestheimportanceofgovernanceandcitizenparticipation in improvingpublic management andpromoting social justice in Brazil. Facedwithchallengesandpracticesthatcompromisetrust in public management, governance emerges as a hopetorestoretheintegrityofpublicservices, with a focusoninclusion, transparency, andcollectivewell-being. Governanceisdiscussed as theState'scapacitytoformulateandimplement policies thatrespondto social needs, emphasizingtheimportanceof direct participationof civil society in decisions, ensuringthatthe voices ofthosemostaffected..........
Governance,Public management,Citizen participation
[1]. Albuquerque, M. C. (2004). Participaçãocidadãnaspolíticaspúblicas. In Fundação Konrad Adenauer - FKA, Participaçãocidadã: Novosconceitos e metodologias (pp. 15-60). ExpressãoGráfica e Editora.
|
K. C.da Cruz, R. L. R. Gomes |
||||||
| Bibliographic Review of Road Transport Dependency in Brazil | ||||||
With the recent truckers' strikes, the current dependence of Brazil on the road transport mode has become apparent. Each strike results in a lack of supplies in various regions of the country, causing a crisis that worsens with each day of standstill. Furthermore, the road transport mode faces challenges such as inadequate road infrastructure, high fleet maintenance costs, infrequent updates to freight rates, and even fuel expenses. The applied methodology is deemed sufficient for a qualitative approach, supported by a bibliographic research analysis grounded in records from institutional websites addressing the same thematic, as well as books, scientific articles, and monographs...........
Dependence; Modal; Road Transport; Transportation; Cost.
[1]. Clicklogtransportes. (2023, August 27). Institutional website. Retrieved from https://www.clicklogtransportes.com.br/5-motivos-pelos-quais-o-transporte-rodoviario-e-o-mais-utilizado-no-brasil/.
|
I Made Mara, I Made Nuarsa, I Kade Wiratama |
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| The effect of particle size and adhesive on the ash content and volatile matter of organic waste bio-charcoal briquettes | ||||||
Householdwaste, whichoriginatesfromdailyactivitieswithinhouseholds, can accumulate over time and decompose if not managedproperly. Improperwaste management can lead to variousdiseasescaused by bacteria and viruses. To addresswastegeneration in households and provide an alternative fuel source to replace fossil fuels and LPG gas, one solution is to utilizehouseholdorganicwaste in the production of briquettes. In an experimentalapproach, the carbonization process isemployedusing a modifieddrum. The study examines the impact of adhesive concentration (at 5%, 10%, and 15% of 3 grams by weight of briquettes) as the dependent variable. Additionally, the independent variable consideredisparticle size.........
Household waste, Charcoal briquettes, Adhesives,Particles size, Organicwaste.
[1]. Anonim 1. (2012). Pengelolaan sampah. Jakarta. Peraturan Pemerintah Republik Indonesia. PP RI no.18 tentang pengelolaan sampah rumah tangga dan sampah sejenis sampah rumah tangga.
|
Aria Gusti |
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| Physical components of houses, environmental sanitation facilities and pro-environmental behavior of fishermen's families in Muara Siberut, Indonesia | ||||||
This study aims to determine the physical components of houses, environmental sanitation facilities, and pro-environmental behavior in fisherman families in Muara Siberut Village, Mentawai Islands Regency. Ninety-eight fishermen's families were used as respondents, who were selected systematically and randomly. The physical components of the house that are assessed are floors, walls, living room windows, bedroom windows, ventilation, ceilings, and kitchen smoke holes. Environmental sanitation facilities include clean water sources, latrines, wastewater disposal facilities, and garbage disposal sites. Pro-environmental behavior includes waste disposal methods, disease vector control, the habit of wearing footwear, the habit of opening windows, and cleaning the yard..........
......
[1]. Gusti A, Iqbal W. Fasilitas Sanitasi dan Perilaku Prolingkungan Pedagang di Pasar Air Bangis Kabupaten Pasaman Barat. Higiene 2023; 9: 16–21.
|
Dr. Arshiya Sultana, Ahmed Khalifa Said AL Wahaibi, Nasser Ahmed Nasser Lashko AL Balushi, Rafa Omar Faisal AL Jahdhami, Abdullah Hamed Saud Aljahwari |
||||||
| Effective Inbound Marketing Strategies to Spread Brand Awareness through Social Media in a Competitive Environment in Oman with reference to Ooredoo (Sultanate of Oman) | ||||||
The aim of this report is to understand and examine the importance of inbound marketing strategies in regard to the telecommunications sector and in precise Ooredoo, in order to increase the effectiveness of the marketing process. The objective of the study is to know the impact of employee training programs on the marketing strategy, to identify the involvement of social media in the inbound marketing strategy, to identify the impact of SEO and content on the effectiveness of the strategy, and lastly, to analyze the contribution of the current inbound marketing strategies of Ooredoo and their effectiveness to the brand awareness...........
Inbound Marketing, Brand Awareness, Social Media, Content, SEO.
[1]. Ageeva, A. (2020) 'Using inbound marketing strategy for raising brand awareness on the Finnish market; case: bee smart city', [online] Available at: < https://www.theseus.fi/bitstream/handle/10024/340147/Thesis%20bee%20smart%20city%20Anastasiia%20Ageeva%20.pdf?sequence=2 > [Accessed 12 March 2023 ].
|
Chidiebere C. Nweke, Paulinus C. Eze, Isaac A. Ezenugu, Victor N. Okorogu |
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| Methods, Potentials and Challenges of Machine Learning Based Artificial Intelligence Systems in Cyber Security | ||||||
The need for a solution to address the growing and changing pattern of cyber-attacks has increased in recent times. Conventional systems such as signature-base detection systems, manual analysis, and rule-base systems have proven to be very weak against new methods of attacks or threats. Hence, research in cyber security recent times has largely focused on the use of artificial intelligence (AI), which is considered to provide robust and adaptive security for networked public and privative infrastructures connected via internet. In this paper, some recent methods in literature using AI models that are mostly machine learning (ML) have been reviewed considering the approaches used in developing them and possible applications.........
Artificial intelligence, Cyber security, Machine learning, Potentials and challenges
[1]. IBM, n.d. What is Cybersecurity? https://www.ibm.com/topics/cybersecurity
|
André Michaud |
||||||
| Evolution From the Complex Plane to the Quaternion Coordinate System to the Trispatial Geometry | ||||||
The object of this article is a comparative analysis of the geometric characteristics of the 2D unit vector set of the complex plane as used in Quantum Mechanics and in the treatment of electric LC circuits, of the 3D unit vector set of Hamilton's hypersphere as used in quantum theory and finally of the 3x3D unit vector set of the trispatial geometry as used in electromagnetic mechanics. Analysis of the implications of extending the use of the hypersphere coordinate system to the treatment of LC circuits and to the traditional 3D Cartesian coordinate system, and of the consequences of using a unique property of the vectorial cross product of the quaternion complex unit vectors of reversing the direction of application of the resulting real unit vector in the development of electromagnetic mechanics by means of the trispatial geometry..........
Complex plane; Quantum Theory; Quaternions; trispatial geometry; electromagnetic mechanics.
[1]. Renou, MO., Trillo, D., Weilenmann, M. et al. (2021) Quantum theory based on real numbers can be experimentally falsified. Nature 600, 625–629 (2021). https://doi.org/10.1038/s41586-021-04160-4.
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Fasina E.T., Adebanji B., Oyedokun J. A. |
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| Power Flow Analysis of the Nigerian Power Grid with FACTS Devices | ||||||
This paper investigates the Nigerian power grid with Thyristor Controlled Series Capacitor (TCSC). Power flow analysis is carried out on the 28-bus 330kV transmission network without and with TCSC facts device in a MATLAB software environment. The simulation results show some weak buses in the network. However, with the incorporation of TCSC there is a considerable improvement in the voltage magnitude and a significant reduction in the system losses..
Power flow analysis, TCSC, FACTS, Nigerian power network, Bus Voltages
[1] Esaosa O. and Odiase F.O. 2012. Efficiency Improvement of Nigeria 330kV Network using flexible alternating current transmission system (FACTS) devices, IJAET 4(1), pp26-41
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J. L. Costa Filho, R. L. R. Gomes |
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| Study on the Process of Reducing the Volume of Expired Products in a Paint Store | ||||||
To achieve operational excellence, competitiveness, and long-term sustainability in the global market, contemporary companies need to implement quality management and inventory management systems. The research is characterized by following a qualitative approach and being exploratory and descriptive, using bibliographic research as the methodological procedure. The general objective of this research is to develop a study of the process of reducing the volume of expired products in a paint store. Finally, the research has shown that not only but also permeating the entire production process of these activities with the purpose of reducing waste of time, labor, and resources employed, the implementation of a computerized control tool like WMS makes management perennial and scalable.
Expired products; Volume reduction; Operational excellence; Competitiveness; Sustainability.
[1]. Huhne, L. M. (1999). Scientific methodology. Rio de Janeiro: Vozes.
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Itoro Udosen, Akaninyene Obot, Nseobong Okpura, Kufre Udofia |
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| Transient Stability Assessment of Nigerian Sub-transmission Network using Artificial Neural Network (ANN) | ||||||
With the increasing human population comes increased demand for electricity, making power systems more complex than ever and operating close to their stability limit. Considering the importance of stability in power system security, proposing an approach for enhancing transient stability is essential, considering the consistent uncertainties in power systems. This research proposes an artificial neural network (ANN) to resolve power system transient stability. Cochran's formula determined the number of Monte Carlo samples in the system operations data collected from the case study injection substation........
Artificial neural network, transient stability, Cochran's formula, Monte Carlo samples, fault clearing time.
[1]. Abapour, M., and M. Haghifam. 2012. Probabilistic Transient Stability Assessment for on-line Applications. Electrical Power and Energy Systems 42:1, 627–634. [2]. Billinton, R. 1979. Probabilistic Evaluation of Transient Stability in a Multimachine Power System. Proc. of the Inst. of Elect 126:4), 321–326.
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Micah A. Okon, Akaninyene Obot, Kufre Udofia, Jimoh Afolayan |
||||||
| Design and Performance Analysis of Massive MIMO Antenna for Sub-6 GHz 5G Applications | ||||||
This paper explored the critical aspects of Massive Multiple Input Multiple Output (mMIMO) antenna systems tailored for 5G base station applications within the Sub-6 GHz frequency range. A comprehensive performance analysis, evaluating key parameters such as s-parameters, gain, beamwidth, radiation characteristics, envelop correlation coefficient (ECC), and diversity gain (DG) was done. The proposed antennas performed admirably well with improved gain (over 6 dB per element in the case of the 40-element MIMO antenna and over 9 dB for each antenna element of the 84-element mMIMO antenna........
mMIMO, fifth-generation, sub-6 GHz, base station, analysis
[1]. Abedian, M., Rahim, S. K. A., Fumeaux, C., Danesh, S., Lo, Y. C., and Jamaluddin, M. H. (2017). Compact ultrawideband MIMO dielectric resonator antennas with WLAN band rejection. IET Microwaves, Antennas and Propagation, 11:11, 1524–1529. [2]. Aduke, A. A., Akaninyene, B. O., & Udofia, U. M. (2018). Compact dual-band triangular microstrip antenna with broadband characteristics for WLAN applications. International Journal of Science and Engineering, 7:79, 132–136. [3]. Al-Ajrawi, Y., & Rahhal, J. (2015). A simple antenna design for massive MIMO techniques. 2015 JIEEEC 9th Jordanian International Electrical and Electronics Engineering Conference, JIEEEC 2015. https://doi.org/10.1109/JIEEEC.2015.7470743 [4]. Al-Tarifi, M. A., Sharawi, M. S., & Shamim, A. (2018). Massive MIMO antenna system for 5G base stations with directive ports and switched beamsteering capabilities. IET Microwaves, Antennas and Propagation, 12(10), 1709–1718. https://doi.org/10.1049/iet-map.2018.0005 [5]. Amin, F., Saleem, R., Shabbir, T., ur Rehman, S., Bilal, M., & Shafique, M. F. (2019). A compact quad-element UWB-MIMO antenna system with parasitic decoupling mechanism. Applied Sciences (Switzerland), 9(11). https://doi.org/10.3390/app9112371
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Surekha A, Jayasheel I Harti |
||||||
| Assessment of CBN Insert Tool Life and Surface Roughness While Machining Stainless Steel | ||||||
The acceleration of better cutting tools toward the accomplishment of a greater tribological execution and wear-resistance is key to the productivity improvement of manufacturing operations. As the prerequisite intended for high tolerance manufactured goods grows, the manufacturing industry, particularly the machine building and car sectors, is always attempting to reduce operating costs while improving machined component quality. The industrial industry's intensifying demand towards increasing productivity, machine more intricate materials, besides augmenting quality in high volume ensures the driving force ahead towards the expansion of cutting tool materials. To ascertain which factors are most important for the desired outcome, optimisation of the machining parameters was also necessary. Taguchi and the ANOVA approach are two commonly used methods for the optimisation of machining parameters. These methods assist to identify the most important factors.In the present work CBN Inserts tool life and surface roughness is assessed while machining Stainless Steel workpiece.
CBN Tool Insert, Surface Roughness, Tool Life, Speed, Feed and Depth of Cut.
[1]. Kamran Amini andAmin Akhbarizadeh, "Cryogenic Heat Treatment – A Review Of TheCurrentState"MetallurgicalandMaterialsEngineeringAssociationofMetallurgicalEngineersofSerbia AMES.
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I. A. S. Campos, R. L. R. Gomes |
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| Materials Management Practices for Reducing Warehouse Inventory Levels in A Metallurgical Industry: A Case Study | ||||||
In the current scenario of intense competitiveness among companies, the inventory management area is currently perceived as strategic for achieving global goals within organizations, given that inventories represent a significant portion of the assets and capital invested in materials. Therefore, the investigation aims to explore the application of inventory management tools in a metallurgical industry, seeking to understand how the control of material inventory levels is conducted, while evaluating performance indicators and achieved outcomes. For the development of this study, analyses of Warehouse indicators were conducted, comparing the scenario before and after the implementation of material management methodologies. The general objective of this study is to investigate the application of inventory management systems in a steel processing industry in the State of Ceará. Through the completion of this work, improvements in the area's results were observed, including: reduction in inventory values, increase in material availability levels for the factory, and enhancement in inventory accuracy.
Inventory; Accuracy; Warehouse; Management tools.
[1]. Ciribelli, M. C. (2003). How to elaborate a master's dissertation through scientific research. Rio de Janeiro: 7 letras.
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Suraj Kumar Vaishnav, Roshan Kashyap, Rajesh Gond, Richa Dubey |
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| Harmonics Analysis of Inverter with Load Variation Using Matlab Similation | ||||||
Inverters, crucial components in various applications from renewable energy integration to electric vehicles, are not ideal AC sources. Their switching operation introduces harmonics, distorting the output waveform and impacting power quality. This paper delves into the harmonics analysis of inverters, exploring their generation mechanisms, effect on input and output circuits, and potential mitigation strategies. Through circuit diagrams and simulations, we gain insights into minimizing harmonic content and designing efficient and compliant inverters.
........
[1]. Folorunso O, Ojo A.O, Ajibade A., (2015). Harmonicanalysis and it mathematical philosophy.
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Ganiyu Adedayo Ajenikoko, Abdulbasit Oladayo Ajenikoko, Titilola Tunde Olayinka, Ayomide Ademola Adewole, Blessing Adeyemi Oladejo, Mojolaoluwa Adetoyese |
||||||
| Review of Load Stability Techniques for Voltage Collapse on Electric Power System | ||||||
Nowadays, increase in transmission capacity of power system due to economic and environmental constraints
has led to voltage collapse or instability which places limitation to power system operations. Thus,maintaining a stable operation of power system is one of the main challenges of electrical power system. Several computational, analytical and meta-heuristic techniques have been employed for analysis of voltage collapse in power system. These techniques help to identify load buses with high impact of voltage instability and the required generation reduction to maintain power balance within prescribed maximum and minimum allowable values.In these paper, different load stability techniques for voltage system collapse assessment has been reviewed and their corresponding limitations were analyzed. This analysis will play animportant role in determining the system operating limits and operating guidelines of powersystem. Power System, Capacity limits, Voltage collapse, Analytical, Voltage Instability, Load Stability.
[1]. Chertkov, M., Backhaus, S., Turtisyn, K., Chernyak, V. and Lebedev, V. (2011). Voltage collapse and ODE approach to power
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Ganiyu Adedayo Ajenikoko, Abass Balogun, Abdulbasit Oladayo Ajenikoko, Titilola Tunde Olayinka, Hanif Olamide Olatunde, Akinrinmade Daniel |
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| Importance of Synchronous Compensator for Suitable Solution of Mitigating Power Qualityproblem on Electrical Power System | ||||||
Transmission system is the bulk movement of electrical energy between generating stations and distribution centers catering for industrial, commercial and domestic consumers of electricity. Increased usage of non-linear loads has led to Power Quality (PQ) problems such as voltage sag which have undesirable impacts on the operation of the network among others. This study provides suitable mitigating techniques for PQ problem on electrical power system by appropriate placement of Static Synchronous Compensator (STATCOM) in the power system using analytical method. The performance of the STATCOM was tested and implemented on the IEEE 14 bus and Nigerian 330 kV grid system, respectively..........
Non-linear Load, Power Quality, STATCOM, Voltage Sag, Sag Duration.
[1] Adepoju, G. A., Sanusi, M. A. and Tijani, M. A. (2017). Application of SSSC to the 330 kV Nigerian transmission network for voltage control.Nigerian Journal of Technology (NIJOTECH), 36 (4): 1258 – 1264.
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Ganiyu Adedayo Ajenikoko, Bolarinwa Samson Adeleke, Abdulbasit Oladayo Ajenikoko, Ajibola Mukaila Oseni, Babajide Olawale Akinjobi, Kehinde Adeniyi |
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| Assessment and Prediction of Voltage Collapse on Nigerian Power System | ||||||
A large integrated of transmission lines that connectedgenerators and load is refers to electric power system. Major problem confronting the efficient power system is voltage collapse due to heavily loaded lines and reactive power shortage. This paper therefore, focused on assessment and prediction of voltage collapse on Nigerian power system.Newton-Raphson (NR) power flow analysis was performed for contingency. Voltage Stability Prediction Index (VSPI) was calculated to detect voltage collapse point. Firefly Algorithm (FA) was utilized to optimize the solution and simulation was carried out using MATLAB R(2018b). The performance of the approach was tested on Nigerian 28..........
Electric Power System, Firefly Algorithm, Voltage collapse, Voltage Stability Prediction Index, Reactive Load Capacity, Voltage Magnitude..
[1]. Adewale, A. A., Adekitan, A. I., Idoko, A. O., Agbetuyi, F. A. and Samuel, I. A. (2018). Energy audit and optimal power supply for a commercial building in Nigeria. Electrical and Electronic Engineering | Research Article, Cogent Engineering , 5: 1546658: 1-18.
|
Harshad M. Panchal, Greegory Mathew, Vijaya Kumar N. Kottur |
||||||
| Multi – Objective Optimization of Wire Electric Discharge Machining Parameters of Plastic Mould Steel - P20+Ni | ||||||
This study aims to optimize Wire Electrical Discharge Machining (WEDM) parameters for machining P20+Ni plastic mold steel. It examines surface roughness, machining time, and taper angle in relation to pulse on/off time, dielectric pressure, pulse current, wire feed rate, tension, servo voltage, and servo feed rate. Using an Electronica Jobmaster D-Lite machine and Taguchi's L18 orthogonal array, eighteen experimental runs were conducted. Analysis involved signal-to-noise ratio, variance analysis, and Grey Relational Analysis through MINITAB-18. Optimal settings were determined..........
.........
[1]. S. Tilekar, S. S. Das, and P. K. Patowari, "Process Parameter Optimization of Wire EDM on Aluminum and Mild Steel by Using Taguchi Method," Procedia Materials Science, vol. 5, pp. 2577–2584, 2014, doi: 10.1016/j.mspro.2014.07.518.
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A. W. M. Almeida, M. A. de Brito |
||||||
| The Strategic Importance of Supplier Diversity in the Financial Impact of a ransportation Company: A Case Study of Latitude 3 Logistics in the City of Maracanaú - CE | ||||||
The article addresses supply management as a crucial modality for companies involved in transportation businesses. Using a qualitative approach, it explores the reasons that lead organizations to diversify suppliers and apply strategic purchasing in the supply chain, especially with the support of new technologies. The general objective of the literature review is to investigate how new technologies and supplier diversity financially impact transport companies. The research highlights that smarter management can reduce costs, improve investments and make services more competitive. The potential of supplier diversity to reduce costs throughout the supply chain is highlighted, emphasizing the importance of comprehensive planning and management for improvements in service, strategic implementation and adoption of new technologies. Finally, it is possible to conclude that the topics covered on the importance of strategic diversity of suppliers is the crucial point for the good performance of a transport company, enabling a process to opt for the most viable and favorable alternative to be taken, strategically in decision making.
Diversity of suppliers; Supply chain; New technologies; Decision making.
[1]. Minayo, M. C., & Costa, A. P. (2019). Techniques that use words, looks, and empathy: qualitative research in action. Aveiro: Ludomedia.
|
J. L. Costa Filho, R. L. R. Gomes |
||||||
| Study on the Process of Reducing the Volume of Expired Products in a Paint Store | ||||||
To achieve operational excellence, competitiveness, and long-term sustainability in the global market, contemporary companies need to implement quality management and inventory management systems. The research is characterized by following a qualitative approach and being exploratory and descriptive, using bibliographic research as the methodological procedure. The general objective of this research is to develop a study of the process of reducing the volume of expired products in a paint store. Finally, the research has shown that not only but also permeating the entire production process of these activities with the purpose of reducing waste of time, labor, and resources employed, the implementation of a computerized control tool like WMS makes management perennial and scalable.
Expired products; Volume reduction; Operational excellence; Competitiveness; Sustainability.
[1]. Huhne, L. M. (1999). Scientific methodology. Rio de Janeiro: Vozes. [4]. Peres, S. R., Rabelo, J. C., Furquim, M. G. D., & Souza Júnior, J. C. (2020). Evaluation of implementing the ABC stock control tool in an agricultural products company. Revista Brasileira de Administração Científica, 11(3), 144-154. http://doi.org/10.6008/CBPC2179-684X.2020.003.0010.
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Itoro Udosen, Akaninyene Obot, Nseobong Okpura, Kufre Udofia |
||||||
| Transient Stability Assessment of Nigerian Sub-transmission Network using Artificial Neural Network (ANN) | ||||||
With the increasing human population comes increased demand for electricity, making power systems more complex than ever and operating close to their stability limit. Considering the importance of stability in power system security, proposing an approach for enhancing transient stability is essential, considering the consistent uncertainties in power systems. This research proposes an artificial neural network (ANN) to resolve power system transient stability. Cochran's formula determined the number of Monte Carlo samples in the system operations data collected from the case study injection substation.......
Artificial neural network, transient stability, Cochran's formula, Monte Carlo samples, fault clearing time.
[1]. Abapour, M., and M. Haghifam. 2012. Probabilistic Transient Stability Assessment for on-line Applications. Electrical Power and Energy Systems 42:1, 627–634. [2]. Billinton, R. 1979. Probabilistic Evaluation of Transient Stability in a Multimachine Power System. Proc. of the Inst. of Elect 126:4), 321–326.
|
Micah A. Okon, Akaninyene Obot, Kufre Udofia3 Jimoh Afolayan |
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| Design and Performance Analysis of Massive MIMO Antenna for Sub-6 GHz 5G Applications | ||||||
This paper explored the critical aspects of Massive Multiple Input Multiple Output (mMIMO) antenna systems tailored for 5G base station applications within the Sub-6 GHz frequency range. A comprehensive performance analysis, evaluating key parameters such as s-parameters, gain, beamwidth, radiation characteristics, envelop correlation coefficient (ECC), and diversity gain (DG) was done. The proposed antennas performed admirably well with improved gain (over 6 dB per element in the case of the 40-element MIMO antenna and over 9 dB for each antenna element of the 84-element mMIMO antenna), consistent impedance bandwidth, impulse reception characteristics (evidenced by VSWR: 1≤VSWR≤2), high radiation efficiency, nearly omnidirectional radiation pattern on the average.........
mMIMO, fifth-generation, sub-6 GHz, base station, analysis.
[1]. Abedian, M., Rahim, S. K. A., Fumeaux, C., Danesh, S., Lo, Y. C., and Jamaluddin, M. H. (2017). Compact ultrawideband MIMO dielectric resonator antennas with WLAN band rejection. IET Microwaves, Antennas and Propagation, 11:11, 1524–1529. [2]. Aduke, A. A., Akaninyene, B. O., & Udofia, U. M. (2018). Compact dual-band triangular microstrip antenna with broadband characteristics for WLAN applications. International Journal of Science and Engineering, 7:79, 132–136. [3]. Al-Ajrawi, Y., & Rahhal, J. (2015). A simple antenna design for massive MIMO techniques. 2015 JIEEEC 9th Jordanian International Electrical and Electronics Engineering Conference, JIEEEC 2015. https://doi.org/10.1109/JIEEEC.2015.7470743 [4]. Al-Tarifi, M. A., Sharawi, M. S., & Shamim, A. (2018). Massive MIMO antenna system for 5G base stations with directive ports and switched beamsteering capabilities. IET Microwaves, Antennas and Propagation, 12(10), 1709–1718. https://doi.org/10.1049/iet-map.2018.0005 [5]. Amin, F., Saleem, R., Shabbir, T., ur Rehman, S., Bilal, M., & Shafique, M. F. (2019). A compact quad-element UWB-MIMO antenna system with parasitic decoupling mechanism. Applied Sciences (Switzerland), 9(11). https://doi.org/10.3390/app9112371
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Bubu Pius Erheyovwe, PhD, Dr Vidya Sankarapandian, Israel-Cookey Chigozie |
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| Simulation of Focused Thermal Ablation of Brain Tumors using a Precise Microwave Antenna Approach in COMSOL Multiphysics | ||||||
Microwave ablation has emerged as a promising alternative, offering a minimally invasive and highly targeted approach to brain tumor eradication following Filippiadis et al. (2016). This study utilized COMSOL Multiphysics 6.2 simulation to assess the impact of microwave ablation on brain tumors operating at a frequency of 1.45 GHz. Key findings include focused power dissipation density and temperature rise within the targeted area, indicating the effectiveness of the ablation process. The simulation results, supported by existing literature, highlight the precise targeting capabilities of the microwave antenna with minimal thermal spread to surrounding healthy tissue.......
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[1]. Filippiadis, D., Gkizas, C., Kostantos, C., Mazioti, A., Reppas, L., Brountzos, E., Kelekis, N., & Kelekis, A. (2016). Percutaneous Biopsy and Radiofrequency Ablation of Osteoid Osteoma with Excess Reactive New Bone Formation and Cortical Thickening Using a Battery-Powered Drill for Access: A Technical Note. Cardiovascular and interventional radiology, 39(10), 1499–1505. https://doi.org/10.1007/s00270-016-1366-6 [2]. Filippiadis, D. K., Spiliopoulos, S., Konstantos, C., Reppas, L., Kelekis, A., Brountzos, E., & Kelekis, N. (2018). Computed tomography-guided percutaneous microwave ablation of hepatocellular carcinoma in challenging locations: safety and efficacy of high-power microwave platforms. International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group, 34(6), 863–869. https://doi.org/10.1080/02656736.2017.1370728[3]. Li, X., Gao, C., Yang, Y., Zhou, F., Li, M., Jin, Q., & Gao, L. (2014). Systematic review with meta-analysis: the association between human papillomavirus infection and oesophageal cancer. Alimentary pharmacology & therapeutics, 39(3), 270–281. https://doi.org/10.1111/apt.12574 [4]. Li, W., & Graeber, M. B. (2012). The molecular profile of microglia under the influence of glioma. Neuro-oncology, 14(8), 958–978. https://doi.org/10.1093/neuonc/nos116 [5]. Matar, C. F., Kahale, L. A., Hakoum, M. B., Tsolakian, I. G., Etxeandia‐Ikobaltzeta, I., Yosuico, V. E. D., Terrenato, I., Sperati, F., Barba, M., Schünemann, H. J., & Akl, E. A. (2018). Anticoagulation for perioperative thromboprophylaxis in people with cancer. The Cochrane Library, 2019(2). https://doi.org/10.1002/14651858.cd009447.pub3
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