Engineering and Applied Science Letters最新文献

Gallery of integrating factors for non-linear first-order differential equations 非线性一阶微分方程的积分因子库

Engineering and Applied Science Letters Pub Date : 2021-12-30 DOI: 10.30538/psrp-easl2021.0077

A. Adu-Sackey, Gabriel Obed Fosu, B. Akuffo

{"title":"Gallery of integrating factors for non-linear first-order differential equations","authors":"A. Adu-Sackey, Gabriel Obed Fosu, B. Akuffo","doi":"10.30538/psrp-easl2021.0077","DOIUrl":"https://doi.org/10.30538/psrp-easl2021.0077","url":null,"abstract":"This paper discusses a gallery of useful results in connection with integrating factors that are often left as problems for discovery learning and are generally not taught in typical Ordinary Differential Equations courses. Most often than not the approach earlier writers employ is to give a possible form for an integrating factor that may results in an integrating curve without practical prove as far as the subject matter is concerned. In this write-up, an attempt is made by solving the resulting partial differential equation emanating from an underlining general differential equation of a non-exact form, by the use of the ratio theorem to establish various intricate possibilities of integrating factors that are seldom and often relegated to the background, even though they may be equally be applied as a function of a unitary variable or a linear combination of both the dependent and independent variables under certain conditions. Granted an integrating factor is found and such a function applied, the benefit is enormous especially the non-exact differential equation reduces into a known type which may be identified as exact, homogeneous, and or separable that yields a solution.","PeriodicalId":11518,"journal":{"name":"Engineering and Applied Science Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49050907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The relationship between the energy efficiency of buildings and occupants: A review 建筑能源效率与居住者的关系综述

Engineering and Applied Science Letters Pub Date : 2021-12-30 DOI: 10.30538/psrp-easl2021.0076

M. U. Farooq, Abdul Ahad, Zeeshan Maqsood, Niranjan Devkota, S. Naqi, Raza

{"title":"The relationship between the energy efficiency of buildings and occupants: A review","authors":"M. U. Farooq, Abdul Ahad, Zeeshan Maqsood, Niranjan Devkota, S. Naqi, Raza","doi":"10.30538/psrp-easl2021.0076","DOIUrl":"https://doi.org/10.30538/psrp-easl2021.0076","url":null,"abstract":"Green buildings are supposed to provide a sustainable solution for energy usage, but their low performance raised some questions in the literature. The researchers determine that occupants are the key factor for this energy deficiency. In the last two decades, a stream of research focuses on the greening of occupants, but a synthesis of findings and results are absent in the literature. In this study, we reviewed the literature on green buildings and occupants. Based on the findings we classified four classes. The first class consists of green occupants and green buildings, which is the ideal solution for high-energy efficiency. The second class is of brown occupants and green buildings and is the prime reason behind outperformed green buildings and yields negative-medium level efficiency. The third class comprises green occupants and brown buildings and yields positive-medium level efficiency, which helps to start the journey towards sustainability. The fourth class is the combination of brown buildings and brown occupants and has the lowest efficiency and worst impact on the environment throughout the lifecycle. Further, we link these classes with the energy-saving efficiency of buildings and finally recommended an efficient solution for second and third world countries. The study contributes to green building literature and packed with managerial implications to gain the maximum benefits of green buildings.","PeriodicalId":11518,"journal":{"name":"Engineering and Applied Science Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49053593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Digital high-speed data modulation techniques 数字高速数据调制技术

Engineering and Applied Science Letters Pub Date : 2021-12-30 DOI: 10.30538/psrp-easl2021.0075

W. T. Ireeta, Esther Nabadda, G. Isoe

引用次数: 0

Predicting COVID-19 cases, deaths and recoveries using machine learning methods 使用机器学习方法预测新冠肺炎病例、死亡和康复

Engineering and Applied Science Letters Pub Date : 2021-12-30 DOI: 10.30538/psrp-easl2021.0079

M. Lounis, F. Khan

引用次数: 5

Dependence of reflectance on angular deposition and film thickness of ZnS/Ag nanolayers 反射率对ZnS/Ag纳米层角沉积和膜厚的影响

Engineering and Applied Science Letters Pub Date : 2021-12-30 DOI: 10.30538/psrp-easl2021.0078

E. Bwayo, W. Okullo, D. Mukiibi, D. Okello, Robert Lugolole, Tumps. W. Ireeta

引用次数: 0

Hermite-Hadamard type inequalities for (n)-polynomial generalized convex functions of Raina type and some related inequalities (n) -多项式Raina型广义凸函数的Hermite-Hadamard型不等式及相关不等式

Engineering and Applied Science Letters Pub Date : 2021-09-30 DOI: 10.30538/psrp-easl2021.0074

S. Butt, M. Tariq, Muhammad Nadeem

引用次数: 0

Renewable energy policy around the globe 全球可再生能源政策

Engineering and Applied Science Letters Pub Date : 2021-09-30 DOI: 10.30538/psrp-easl2021.0073

A. Mahmood, Muhammad Qasim, Muhammad Faisal Khan

{"title":"Renewable energy policy around the globe","authors":"A. Mahmood, Muhammad Qasim, Muhammad Faisal Khan","doi":"10.30538/psrp-easl2021.0073","DOIUrl":"https://doi.org/10.30538/psrp-easl2021.0073","url":null,"abstract":"Renewable energy systems (RESs) have an inherent quality of achieving independence Vis a Vis useful energy harnessing for self or localized use. At larger scale the renewable energy system allows the power generation and distribution without a significant harm to the environment. Propagation and proliferation of RESs and the Renewable Energy Technology (RET), collectively demand an effective policy making infrastructure to be in place to ensure their penetration locally and globally. Renewable Energy Policies have a great impact on how readily these systems are adopted by the investors and market, how efficient these systems are which is dependent on the research and development (R&D) of RESs, how effectively the country or region copes with the scourge of environmental harm with the use of RESs. Renewable Energy Policies also have an impact on how costly these technologies are and how these technologies fiscally benefit common man, investors and industries. Efficiency enhancement, stability and intelligent management of grids integrated with RES are also renewable policy dependent. This paper thoroughly and critically examines the importance of renewable energy policy. not just at domestic or national level but also at global level. It discusses in detail the core ingredients of renewable energy policy which were adopted in the past, which are being adopted now and which should be adopted in future. This paper also discusses policy, business and financial models; importance of tariff formulation, incentives and subsidies and a few factors which may pose a risk to the development and adoption of RESs. At the end a few suggestions have also been made which, if adopted, would help promote the RESs proliferation across the globe at a rapid pace and would ensure energy security, sustainable development and environmental conservation.","PeriodicalId":11518,"journal":{"name":"Engineering and Applied Science Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48317429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The power of visual analytics and language processing to explore the underlying trend of highly popular song lyrics 视觉分析和语言处理的力量，探索高度流行的歌词的潜在趋势

Engineering and Applied Science Letters Pub Date : 2021-09-30 DOI: 10.30538/psrp-easl2021.0072

Tanish Maheshwari, Tarpara Nisarg Bhaveshbhai, Mitali Halder

引用次数: 0

Integrated interpretive structural modeling (ISM) and MICMAC diagram for analysis of infrastructure influence in supporting submarine operations 综合解释结构建模(ISM)和MICMAC图分析支持潜艇作战的基础设施影响

Engineering and Applied Science Letters Pub Date : 2021-09-06 DOI: 10.30538/psrp-easl2021.0071

Moelyanto Moelyanto, Marsetio Marsetio, A. Octavian, R. O. Bura, I. Putra

{"title":"Integrated interpretive structural modeling (ISM) and MICMAC diagram for analysis of infrastructure influence in supporting submarine operations","authors":"Moelyanto Moelyanto, Marsetio Marsetio, A. Octavian, R. O. Bura, I. Putra","doi":"10.30538/psrp-easl2021.0071","DOIUrl":"https://doi.org/10.30538/psrp-easl2021.0071","url":null,"abstract":"The strategic value of the Navy's submarine capabilities is greatly influenced by the ability of its supporting infrastructure to be able to maintain the confidentiality of submarine operations. Based on these conditions, this study aims to identify and analyze the operational readiness of submarines to increase the deterrence of the state defense system at sea. This study uses Interpretive Structural Modeling (ISM) and MIC-MAC diagrams. The ISM method is used to analyze the effect on the criteria. MICMAC diagrams are used as criteria for determining the related variables. Based on the results of the ISM and MICMAC diagram analysis, it was found that fifteen elements were divided into (4) (four) quadrants. Quadrant I (Autonomous) consists of six elements, such as ((C_1)), ((C_2)), ((C_3)), ((C_4)), ((C_{13)}), ((C_{15})). Quadrant II (Dependent) consists of six elements, such as ((C_5)), ((C_6)), ((C_7)), ((C_{11})), ((C_{12})), ((C_{14})). Quadrant IV (Independent) consists of three elements, such as ((C_8)), ((C_9)), ((C_{10})). This research is expected to provide benefits to both academics and practitioners in the field of submarines and defense strategy.","PeriodicalId":11518,"journal":{"name":"Engineering and Applied Science Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44961531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Strongest relation, cosets and middle cosets of (AQFSC(G)) 的最强关系，协集和中协集 (AQFSC(G))

Engineering and Applied Science Letters Pub Date : 2021-08-12 DOI: 10.30538/psrp-easl2021.0070

R. Rasuli

引用次数: 0