Pub Date : 2022-01-01DOI: 10.56293/ijasr.2022.5405
Hua-Qing Zhang, Zhenggen Piao
: Endodontic disease or periapical disease is one of the most common oral diseases in clinic. Root canal therapy (RCT) is currently the most common and effective method for the treatment of endodontic or periapical diseases. Root canal therapy (RCT) is currently the most common and effective method for the treatment of endodontic or periapical diseases. The complex root canal morphology of mandibular first molar is a major challenge for its root canal treatment. The application of nickel-titanium instruments has brought new breakthroughs in root canal therapy, but also brought some new hidden dangers. This article reviews the research status of cone beam computed tomography (CBCT) guided nickel-titanium instruments for mandibular first molar preparation in recent years.
{"title":"Research progress of mandibular first molar preparation with nickel-titanium instruments under the guidance of CBCT","authors":"Hua-Qing Zhang, Zhenggen Piao","doi":"10.56293/ijasr.2022.5405","DOIUrl":"https://doi.org/10.56293/ijasr.2022.5405","url":null,"abstract":": Endodontic disease or periapical disease is one of the most common oral diseases in clinic. Root canal therapy (RCT) is currently the most common and effective method for the treatment of endodontic or periapical diseases. Root canal therapy (RCT) is currently the most common and effective method for the treatment of endodontic or periapical diseases. The complex root canal morphology of mandibular first molar is a major challenge for its root canal treatment. The application of nickel-titanium instruments has brought new breakthroughs in root canal therapy, but also brought some new hidden dangers. This article reviews the research status of cone beam computed tomography (CBCT) guided nickel-titanium instruments for mandibular first molar preparation in recent years.","PeriodicalId":13763,"journal":{"name":"International Journal of Applied Science and Engineering Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77071936","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}
Pub Date : 2022-01-01DOI: 10.56293/ijasr.2022.5495
Mealin Grace B. Pacle, Janice Apura, Russel Joy C. Paran
The species richness of macrolichens in Mt. Sapinit, SitioDagulos, and MaramagBukidnon was investigated. The main objective of the study is to determine the species richness of macrolichens in the vicinity of Mt. Sapinit. Transect walk and quadrat sampling were carried out in the collection of macrolichens. The gathering and identification of specimens collected was based on standard taxonomical procedure. Results of the study revealed a total of 20 species classified into 7 genera and 13 families. The most family-rich species belong to the family Lobariaceae, and the least family-rich belong to Ramalinaceae, Collemataceae, and Dictyonemaceae. Most of the epiphytic macrolichens belong to the family Parmeliaceae, which dominates the entire montane forest. The distribution of macrolichens across the area occurs in the bark of the tree, logs and twigs, and in tree branches.Elevation also have impact to the growth of lichen species. Higher elevations appear to provide suitable condition for many lichen species to thrive. Thus, the need to preserve the forest ecosystem is essential in order to conserve the lichen communities.
{"title":"SPECIES RICHNESS OF MACROLICHENS IN MT. SAPINIT, SITIO DAGULOS, LA ROXAS, MARAMAG, BUKIDNON","authors":"Mealin Grace B. Pacle, Janice Apura, Russel Joy C. Paran","doi":"10.56293/ijasr.2022.5495","DOIUrl":"https://doi.org/10.56293/ijasr.2022.5495","url":null,"abstract":"The species richness of macrolichens in Mt. Sapinit, SitioDagulos, and MaramagBukidnon was investigated. The main objective of the study is to determine the species richness of macrolichens in the vicinity of Mt. Sapinit. Transect walk and quadrat sampling were carried out in the collection of macrolichens. The gathering and identification of specimens collected was based on standard taxonomical procedure. Results of the study revealed a total of 20 species classified into 7 genera and 13 families. The most family-rich species belong to the family Lobariaceae, and the least family-rich belong to Ramalinaceae, Collemataceae, and Dictyonemaceae. Most of the epiphytic macrolichens belong to the family Parmeliaceae, which dominates the entire montane forest. The distribution of macrolichens across the area occurs in the bark of the tree, logs and twigs, and in tree branches.Elevation also have impact to the growth of lichen species. Higher elevations appear to provide suitable condition for many lichen species to thrive. Thus, the need to preserve the forest ecosystem is essential in order to conserve the lichen communities.","PeriodicalId":13763,"journal":{"name":"International Journal of Applied Science and Engineering Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81343229","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}
Women farmers in Nigeria particularly in rural areas have always worked and their labour contributes a key role in the survival of millions of Nigeria families. Most rural women in Nigeria are the invisible farmers and they form the backbone of rural development, however more than half of Nigeria’s food is produced by female farmers. These studies analyze the profitability and efficiency of tomato production among female farmers in Ibadan North Local Government Area of Oyo State. The study specifically described the socioeconomic characteristics of the respondents, determines the technical efficiency and factors affecting technical efficiency and lastly estimated the profitability of tomato production in the study area. The study revealed that the female tomato farmers were adult and active, most of the farmers were literate, majority had 5 household sizes and less and most of the female tomato farmers had little experience in tomato production. The study also revealed that farm size, capital and labour were the factors that significantly affected tomato production of the respondents while the variables representing household size and number years spent in school affected the Inefficiency of farmers in the study area. The mean technical efficiency was found to be 0.97 (or 97%) which implied that, on the average, the farmers were 97% technically efficient; hence their observed output was about 3% less than the maximum frontier output.
{"title":"PROFITABILITY AND EFFICIENCY OF TOMATO PRODUCTION AMONG FEMALE FARMERS IN IBADAN NORTH LOCAL GOVERNMENT AREA, IBADAN, OYO STATE, NIGERIA","authors":"Olapade Ogunwole, Folayimi, Akanbi, Oluwafemi Nathaniel, Okunola, Olufemi Solomon","doi":"10.56293/ijasr.2022.5429","DOIUrl":"https://doi.org/10.56293/ijasr.2022.5429","url":null,"abstract":"Women farmers in Nigeria particularly in rural areas have always worked and their labour contributes a key role in the survival of millions of Nigeria families. Most rural women in Nigeria are the invisible farmers and they form the backbone of rural development, however more than half of Nigeria’s food is produced by female farmers. These studies analyze the profitability and efficiency of tomato production among female farmers in Ibadan North Local Government Area of Oyo State. The study specifically described the socioeconomic characteristics of the respondents, determines the technical efficiency and factors affecting technical efficiency and lastly estimated the profitability of tomato production in the study area. The study revealed that the female tomato farmers were adult and active, most of the farmers were literate, majority had 5 household sizes and less and most of the female tomato farmers had little experience in tomato production. The study also revealed that farm size, capital and labour were the factors that significantly affected tomato production of the respondents while the variables representing household size and number years spent in school affected the Inefficiency of farmers in the study area. The mean technical efficiency was found to be 0.97 (or 97%) which implied that, on the average, the farmers were 97% technically efficient; hence their observed output was about 3% less than the maximum frontier output.","PeriodicalId":13763,"journal":{"name":"International Journal of Applied Science and Engineering Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78870279","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}
Pub Date : 2022-01-01DOI: 10.56293/ijasr.2022.5497
E. E. Ezugwu, Everistus O. Abonyi, Gloria I. Ezugwu, Benjamin Mgbechi, Joseph C.Eze, Daniel C. Ugwuanyi
Background: Buildings used for radio-diagnostic purposes are expected to satisfy a certain radiation safety measures, however, the privately owned radio-diagnostic facilities in Anambra State are not purpose built. Objective: To evaluate the building design and layout of diagnostic x-ray rooms of privately owned radio-diagnostic facilities in Anambra State against the internationally recommended standards. Methodology: The building designs of all privately owned radio-diagnostic facilities registered with the ministry of health, Anambra State were assessed by measuring the x-ray room sizes, distances between the x-ray tubes and the control consoles, and the wall thicknesses using a well calibrated meter rule. Presence of lead lining on the walls and doors of the diagnostic rooms were noted and their thickness measured. Results: The studied centers showed 14 (70%) compliance to NNRA recommended x-ray room size (16m2). A total of 12 (60%) of the studied centers were in compliant with x-ray tube to console distance (≥ 1 meter) whereas 14(70 %) of the centers complied on the use of minimum of 2mm thickness of lead for wall lining. Conclusion: The designs and outlay of privately owned radio-diagnostic facilities in Anambra State are in compliance with recommended standards.There was however no significant difference in the level of compliance among the studied parameters (p<0.05).
{"title":"Compliance level assessment of the recommended standards in the design of privately owned radio diagnostic centers in Anambra State","authors":"E. E. Ezugwu, Everistus O. Abonyi, Gloria I. Ezugwu, Benjamin Mgbechi, Joseph C.Eze, Daniel C. Ugwuanyi","doi":"10.56293/ijasr.2022.5497","DOIUrl":"https://doi.org/10.56293/ijasr.2022.5497","url":null,"abstract":"Background: Buildings used for radio-diagnostic purposes are expected to satisfy a certain radiation safety measures, however, the privately owned radio-diagnostic facilities in Anambra State are not purpose built. Objective: To evaluate the building design and layout of diagnostic x-ray rooms of privately owned radio-diagnostic facilities in Anambra State against the internationally recommended standards. Methodology: The building designs of all privately owned radio-diagnostic facilities registered with the ministry of health, Anambra State were assessed by measuring the x-ray room sizes, distances between the x-ray tubes and the control consoles, and the wall thicknesses using a well calibrated meter rule. Presence of lead lining on the walls and doors of the diagnostic rooms were noted and their thickness measured. Results: The studied centers showed 14 (70%) compliance to NNRA recommended x-ray room size (16m2). A total of 12 (60%) of the studied centers were in compliant with x-ray tube to console distance (≥ 1 meter) whereas 14(70 %) of the centers complied on the use of minimum of 2mm thickness of lead for wall lining. Conclusion: The designs and outlay of privately owned radio-diagnostic facilities in Anambra State are in compliance with recommended standards.There was however no significant difference in the level of compliance among the studied parameters (p<0.05).","PeriodicalId":13763,"journal":{"name":"International Journal of Applied Science and Engineering Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89148240","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}
Pub Date : 2022-01-01DOI: 10.56293/ijasr.2022.5401
Idibeke Amos JOHN Ph.D, Sunday Etim EKWERE Ph.D, Professor EDEM ETIM PETERS
This paper attempts a definition of the term exhibition with particular attention to Visual Art Exhibition, knowing that there are different forms of exhibitions that may not relate to visual arts. The paper equally highlighted on the various types of exhibitions pointing out the virtual exhibition as a new inclusion that has greatly changed the traditional format of visual art exhibition with its attendant impact on the outcome of the results of exhibitions. The highlighted focuses on the challenges of understanding the scope of the basic types of exhibition in contemporary times, as has been redefined by the concept of virtual exhibition. The relevance of exhibition to artists and the significance to the public is deeply discussed with the aim of positioning visual art exhibition in its rightful place as a catalyst for social change. This assertion could be seen in the significant effort of Kenneth C. Murray as a pioneer curator and organizer of visual art exhibition in Nigeria. Murray was a British Art Teacher in Nigeria who was instrumental to the establishment of Oron Museum in Akwa Ibom State, Nigeria, and he recognized Oron Carvings since 1938 and collected them for permanent art exhibition in the Oron Museum. The above therefore formed the conceptual framework of this paper. The opinions, positions and oppositions of other authorities in this matter are considered as they form the indices for postulating the idea of art exhibition as catalyst for social unification. However, the paper concludes that for the visual art exhibition to function as a catalyst for social unification, the elements of unity and integration must be factors the exhibitions composed of, for it to engender the expression of such feelings of social togetherness.
本文试图对“展览”一词进行定义，特别关注视觉艺术展览，因为知道有不同形式的展览可能与视觉艺术无关。本文同样强调了展览的各种类型，指出虚拟展览作为一种新的包容性，极大地改变了视觉艺术展览的传统形式，并对展览的结果产生了影响。重点关注的是理解当代展览的基本类型的范围所面临的挑战，因为虚拟展览的概念已经被重新定义。深入探讨了展览与艺术家的相关性以及对公众的意义，旨在将视觉艺术展览定位于其作为社会变革催化剂的应有位置。这种主张可以从肯尼斯·默里(Kenneth C. Murray)作为尼日利亚视觉艺术展览的先驱策展人和组织者的重大努力中看到。默里是一位在尼日利亚的英国艺术教师，他在尼日利亚阿夸伊博姆州建立了奥伦博物馆，他从1938年开始认识奥伦雕刻，并收集它们在奥伦博物馆进行永久艺术展览。以上构成了本文的概念框架。其他权威在这件事上的意见、立场和反对意见被认为是构成假设艺术展览作为社会统一催化剂的观念的指标。然而，本文的结论是，为了使视觉艺术展成为社会统一的催化剂，统一和整合的元素必须是展览所构成的因素，才能产生这种社会团结感的表达。
{"title":"VISUAL ART EXHIBITION: A CATALYST FOR SOCIAL UNIFICATION IN NIGERIA","authors":"Idibeke Amos JOHN Ph.D, Sunday Etim EKWERE Ph.D, Professor EDEM ETIM PETERS","doi":"10.56293/ijasr.2022.5401","DOIUrl":"https://doi.org/10.56293/ijasr.2022.5401","url":null,"abstract":"This paper attempts a definition of the term exhibition with particular attention to Visual Art Exhibition, knowing that there are different forms of exhibitions that may not relate to visual arts. The paper equally highlighted on the various types of exhibitions pointing out the virtual exhibition as a new inclusion that has greatly changed the traditional format of visual art exhibition with its attendant impact on the outcome of the results of exhibitions. The highlighted focuses on the challenges of understanding the scope of the basic types of exhibition in contemporary times, as has been redefined by the concept of virtual exhibition. The relevance of exhibition to artists and the significance to the public is deeply discussed with the aim of positioning visual art exhibition in its rightful place as a catalyst for social change. This assertion could be seen in the significant effort of Kenneth C. Murray as a pioneer curator and organizer of visual art exhibition in Nigeria. Murray was a British Art Teacher in Nigeria who was instrumental to the establishment of Oron Museum in Akwa Ibom State, Nigeria, and he recognized Oron Carvings since 1938 and collected them for permanent art exhibition in the Oron Museum. The above therefore formed the conceptual framework of this paper. The opinions, positions and oppositions of other authorities in this matter are considered as they form the indices for postulating the idea of art exhibition as catalyst for social unification. However, the paper concludes that for the visual art exhibition to function as a catalyst for social unification, the elements of unity and integration must be factors the exhibitions composed of, for it to engender the expression of such feelings of social togetherness.","PeriodicalId":13763,"journal":{"name":"International Journal of Applied Science and Engineering Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91372057","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}
Pub Date : 2022-01-01DOI: 10.56293/ijasr.2022.5458
Harnida Wahyuni Adda
This study aims to identify the role of government in developing entrepreneurship in Palu City. This study used a qualitative method as it can find and know the meaning of the problem under study. The population of this study was the Department of Cooperatives, Micro, Small and Medium Enterprises, and Manpower of Palu City. The determination of the sample used a purposive sampling method by considering the characteristics of the research sample, namely understanding the problems studied. Data were analyzed using interactive analysis. The results showed that the growth and development of entrepreneurship in Palu City increased, but the productivity was very low and vulnerable to the dynamics of the uncertain business environment due to natural and non-natural disasters in Palu City. Therefore, stakeholders, especially the Palu City Government have to consider providing assistance in the form of capital, education and training (both skills and management), and facilities and infrastructure to support business operations in this city.
{"title":"The Role of Government in Developing Entrepreneurship Activities in Palu City","authors":"Harnida Wahyuni Adda","doi":"10.56293/ijasr.2022.5458","DOIUrl":"https://doi.org/10.56293/ijasr.2022.5458","url":null,"abstract":"This study aims to identify the role of government in developing entrepreneurship in Palu City. This study used a qualitative method as it can find and know the meaning of the problem under study. The population of this study was the Department of Cooperatives, Micro, Small and Medium Enterprises, and Manpower of Palu City. The determination of the sample used a purposive sampling method by considering the characteristics of the research sample, namely understanding the problems studied. Data were analyzed using interactive analysis. The results showed that the growth and development of entrepreneurship in Palu City increased, but the productivity was very low and vulnerable to the dynamics of the uncertain business environment due to natural and non-natural disasters in Palu City. Therefore, stakeholders, especially the Palu City Government have to consider providing assistance in the form of capital, education and training (both skills and management), and facilities and infrastructure to support business operations in this city.","PeriodicalId":13763,"journal":{"name":"International Journal of Applied Science and Engineering Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89497635","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}
Pub Date : 2022-01-01DOI: 10.56293/ijasr.2022.5439
Mayke Bezerra Alencar, W. Neves, B. A. Souza
The installed capacity generation and the load distribution effects on the optimal location and sizing of photovoltaic generators in the distribution network are analyzed in this article. A genetic algorithm estimates the optimal location and sizing of photovoltaic generators. The calculation of the feeder annual energy losses, which are the objective function of the optimization problem, is performed by the backward/forward method. The complete feeder's annual active load duration curve is segmented into three levels. It is assumed that the load curves in all buses are identical to the feeder and the irradiance and ambient temperature are invariant to the average value for each load level. The analysis is based on scenarios created for a 69-bus test system.
{"title":"Analysis of Factors Influencing Photovoltaic Generators Optimal Installation in Distribution Network","authors":"Mayke Bezerra Alencar, W. Neves, B. A. Souza","doi":"10.56293/ijasr.2022.5439","DOIUrl":"https://doi.org/10.56293/ijasr.2022.5439","url":null,"abstract":"The installed capacity generation and the load distribution effects on the optimal location and sizing of photovoltaic generators in the distribution network are analyzed in this article. A genetic algorithm estimates the optimal location and sizing of photovoltaic generators. The calculation of the feeder annual energy losses, which are the objective function of the optimization problem, is performed by the backward/forward method. The complete feeder's annual active load duration curve is segmented into three levels. It is assumed that the load curves in all buses are identical to the feeder and the irradiance and ambient temperature are invariant to the average value for each load level. The analysis is based on scenarios created for a 69-bus test system.","PeriodicalId":13763,"journal":{"name":"International Journal of Applied Science and Engineering Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76684736","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}
Pub Date : 2022-01-01DOI: 10.56293/ijasr.2022.5499
Reymond M. Bansale, Jay-ar A. Tino, Jenebe Pagulong, Neil Bryan Galabin, Mealin Grace B. Pacle, Kristian Barbarona
The study investigated the macroscopic fungi in Laligan Falls Laligan, Valencia City, Bukidnon. Specifically, it aimed to determine the species richness of fungi in the study area; describe, classify, and identify the fungi species in relation to Family, Genera, and Species; and ascertain which species of fungi are have medicinal value. Quadrat methods were employed in the study. The researchers laid out a 20m x 20m quadrat plot on each side of the falls. A total of 37 species were collected and photo-documented. Of these 21 species were identified, belonging to Class Basidiomycetes and Class Ascomycetes, and 16 species are unidentified. Among the twenty-eight fungi species, 8 species have therapeutic potential. Further results show that the Polyporaceae family had the most species collected. Altitude greatly influences the distribution the fungi, with lower altitudes having fewer fungi than higher altitudes. To evaluate the species diversity, more field research must be scientifically studied in relation to the physical parameters and other vegetation types.
{"title":"Inventory of Some Fungi Species in Laligan Falls, Laligan, Valencia City, Bukidnon","authors":"Reymond M. Bansale, Jay-ar A. Tino, Jenebe Pagulong, Neil Bryan Galabin, Mealin Grace B. Pacle, Kristian Barbarona","doi":"10.56293/ijasr.2022.5499","DOIUrl":"https://doi.org/10.56293/ijasr.2022.5499","url":null,"abstract":"The study investigated the macroscopic fungi in Laligan Falls Laligan, Valencia City, Bukidnon. Specifically, it aimed to determine the species richness of fungi in the study area; describe, classify, and identify the fungi species in relation to Family, Genera, and Species; and ascertain which species of fungi are have medicinal value. Quadrat methods were employed in the study. The researchers laid out a 20m x 20m quadrat plot on each side of the falls. A total of 37 species were collected and photo-documented. Of these 21 species were identified, belonging to Class Basidiomycetes and Class Ascomycetes, and 16 species are unidentified. Among the twenty-eight fungi species, 8 species have therapeutic potential. Further results show that the Polyporaceae family had the most species collected. Altitude greatly influences the distribution the fungi, with lower altitudes having fewer fungi than higher altitudes. To evaluate the species diversity, more field research must be scientifically studied in relation to the physical parameters and other vegetation types.","PeriodicalId":13763,"journal":{"name":"International Journal of Applied Science and Engineering Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74698353","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}
Pub Date : 2022-01-01DOI: 10.56828/jser.2022.1.1.2
A. Olczak, Z. Pólkowski
{"title":"Web-based Data Mining Technology and its Application","authors":"A. Olczak, Z. Pólkowski","doi":"10.56828/jser.2022.1.1.2","DOIUrl":"https://doi.org/10.56828/jser.2022.1.1.2","url":null,"abstract":"","PeriodicalId":13763,"journal":{"name":"International Journal of Applied Science and Engineering Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84247139","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}
Pub Date : 2022-01-01DOI: 10.56293/ijasr.2022.5483
Mohamed S. Soliman
Many processes in industry are characterized by delay time or by slow aperiodic dynamics called lag behavior. In addition, many plants in the industry are described mathematically by higher order systems that are approximated with the lower order systems, most frequently such processes and systems are described mathematically as first-order-systems-with time-delay (FOSTD), also called first-order-plus-dead-time (FOPDT). The presence of time delays causes degradation and limitation of achieving desired performance, moreover, it can induce instability. In such cases, design of feedback control algorithm becomes difficult and tedious task. The present work suggests an efficient, simple, linear, and easy to apply design expressions for designing continuous PID (proportional-integral-derivative) control algorithm modes to control the behavior of FOPDT systems. The design expressions are intended to overcome negative effects of time delay presence, as well as, to simplify the control algorithm design process and help designer, in easy and simple way, to get system under control with acceptable system stability, medium fastness of response and without or with minimum possible overshoot, oscillation and error. For testing and evaluating the correctness, applicability and efficiency of the derived expressions, MATLAB/Simulink software was applied to develop refined software simulation model that simulates real life values and returns maximum needed numerical and graphical data for assessment process. In addition, various FOSTD systems’ types and forms were used in the simulation model, in particular, systems with small, medium and large time constants, DC gains, and time delay, unstable systems, systems with variable delay. Furthermore, to assess the efficiency of suggested design expressions, the resulted overall system response were compared with resulted responses when two design methods were applied; worldwide known Ziegler Nichols method and MATLAB/Simulink auto-tuned PID block. Analysis of numerical and graphical testing results, show that, The designed control algorithm applying the suggested expressions can, not only simplify the design process, but also, efficient for successful in getting system under control and improving controlling system performance, speeding up response, reduce overshoot, and minimize error, but also stabilize an unstable plants.
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