Pub Date : 2021-12-21DOI: 10.14807/ijmp.v12i9.1557
A. Comanescu, A. Rotaru, L. Ungureanu, F. Petrescu
The Stewart's leg is used today in the majority of parallel robotic systems, such as the Stewart platform, but also in many other types of mechanisms and kinematic chains, in order to operate them or to transmit motion. A special character in the study of robots is the study of inverse kinematics, with the help of which the map of the motor kinematic parameters necessary to obtain the trajectories imposed on the effector can be made. For this reason, in the proposed mechanism, we will present reverse kinematic modeling in this paper. The kinematic output parameters, ie the parameters of the foot and practically of the end effector, ie those of the point marked with T, will be determined for initiating the working algorithm with the help of logical functions, "If log(ical)", with the observation that here they play the role of input parameters; it is positioned as already specified in the inverse kinematics when the output is considered as input and the input as output. The logical functions used, as well as the entire calculation program used, were written in Math Cad.
{"title":"Inverse modeling of the stewart foot","authors":"A. Comanescu, A. Rotaru, L. Ungureanu, F. Petrescu","doi":"10.14807/ijmp.v12i9.1557","DOIUrl":"https://doi.org/10.14807/ijmp.v12i9.1557","url":null,"abstract":"The Stewart's leg is used today in the majority of parallel robotic systems, such as the Stewart platform, but also in many other types of mechanisms and kinematic chains, in order to operate them or to transmit motion. A special character in the study of robots is the study of inverse kinematics, with the help of which the map of the motor kinematic parameters necessary to obtain the trajectories imposed on the effector can be made. For this reason, in the proposed mechanism, we will present reverse kinematic modeling in this paper. The kinematic output parameters, ie the parameters of the foot and practically of the end effector, ie those of the point marked with T, will be determined for initiating the working algorithm with the help of logical functions, \"If log(ical)\", with the observation that here they play the role of input parameters; it is positioned as already specified in the inverse kinematics when the output is considered as input and the input as output. The logical functions used, as well as the entire calculation program used, were written in Math Cad.","PeriodicalId":54124,"journal":{"name":"Independent Journal of Management & Production","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41438977","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 : 2021-12-21DOI: 10.14807/ijmp.v12i9.1554
A. Comanescu, A. Rotaru, F. Petrescu
The paper presents in detail a method of calculating the forces acting on a 2T9R type robot. In order to determine the reactions (forces in the kinematic couples), one must first determine the inertial forces in the mechanism to which one or more useful loads of the robot can be added. The torsor of the inertia forces is calculated with the help of the masses of the machine elements and the accelerations from the centers of mass of the mechanism elements, so the positions, velocities, and accelerations acting on it will be determined, i.e. its complete kinematics. The calculation method applied by a MathCad program intelligently uses data entry through the IFLOG logic function so that the calculations can be automated. So the effective automation of the calculation program is done exclusively through the IFLOG functions originally used in the paper.
{"title":"Study of forces in a 2T9R robot mechanism","authors":"A. Comanescu, A. Rotaru, F. Petrescu","doi":"10.14807/ijmp.v12i9.1554","DOIUrl":"https://doi.org/10.14807/ijmp.v12i9.1554","url":null,"abstract":"The paper presents in detail a method of calculating the forces acting on a 2T9R type robot. In order to determine the reactions (forces in the kinematic couples), one must first determine the inertial forces in the mechanism to which one or more useful loads of the robot can be added. The torsor of the inertia forces is calculated with the help of the masses of the machine elements and the accelerations from the centers of mass of the mechanism elements, so the positions, velocities, and accelerations acting on it will be determined, i.e. its complete kinematics. The calculation method applied by a MathCad program intelligently uses data entry through the IFLOG logic function so that the calculations can be automated. So the effective automation of the calculation program is done exclusively through the IFLOG functions originally used in the paper.","PeriodicalId":54124,"journal":{"name":"Independent Journal of Management & Production","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49532700","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 : 2021-12-21DOI: 10.14807/ijmp.v12i9.1592
Bruna Christina Battissacco, Walther Azzolini Junior, José Henrique de Andrade, M. Brandao, José Marcelo Barbosa Palma
Computer simulation has great application potential in the area of Production Engineering as a tool to support decision making as it allows to simulate the functioning of a real system through logical relationships, in order to observe its behavior under different scenarios. Which could not be practiced in the real system. In line with this aspect, the present work aims to present a report on the application of simulation for the design of production batches and inventory control, highlighting the process necessary for the construction of the generated simulation model, as well as the challenges and opportunities observed. In order to achieve the proposed objective, a literature review was carried out on the topics of interest; the choice and understanding of simulation software and; the survey of data from a large auto parts manufacturer located in the interior of the state of São Paulo. The main results were an increase in production volume from the inclusion and dimensioning of a buffer after the assembly process and a balance between the number of items of each component of the product structure in the supply with the real capacity of manufacturing cell processing. Cabe ressaltar que o modelo de simulação produto da pesquisa deste artigo pode ser aplicado como um sistema de apoio à decisão do gestor para a elaboração do planejamento estratégico e do planejamento operacional com o propósito de melhorar a capacidade de análise e decisão. It is important mentioning that the simulation model in this article can be applied as a support system decision for the preparation of strategic planning and operational planning, with the purpose of improving the analysis capacity for decision-making.
{"title":"Production batch sizing and inventory level control using simulation software","authors":"Bruna Christina Battissacco, Walther Azzolini Junior, José Henrique de Andrade, M. Brandao, José Marcelo Barbosa Palma","doi":"10.14807/ijmp.v12i9.1592","DOIUrl":"https://doi.org/10.14807/ijmp.v12i9.1592","url":null,"abstract":"Computer simulation has great application potential in the area of Production Engineering as a tool to support decision making as it allows to simulate the functioning of a real system through logical relationships, in order to observe its behavior under different scenarios. Which could not be practiced in the real system. In line with this aspect, the present work aims to present a report on the application of simulation for the design of production batches and inventory control, highlighting the process necessary for the construction of the generated simulation model, as well as the challenges and opportunities observed. In order to achieve the proposed objective, a literature review was carried out on the topics of interest; the choice and understanding of simulation software and; the survey of data from a large auto parts manufacturer located in the interior of the state of São Paulo. The main results were an increase in production volume from the inclusion and dimensioning of a buffer after the assembly process and a balance between the number of items of each component of the product structure in the supply with the real capacity of manufacturing cell processing. Cabe ressaltar que o modelo de simulação produto da pesquisa deste artigo pode ser aplicado como um sistema de apoio à decisão do gestor para a elaboração do planejamento estratégico e do planejamento operacional com o propósito de melhorar a capacidade de análise e decisão. It is important mentioning that the simulation model in this article can be applied as a support system decision for the preparation of strategic planning and operational planning, with the purpose of improving the analysis capacity for decision-making.","PeriodicalId":54124,"journal":{"name":"Independent Journal of Management & Production","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46799970","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 : 2021-12-21DOI: 10.14807/ijmp.v12i9.1647
Alberto Eduardo Besser Freitag, Fabiano Cunha da Silva
Retail plays an important role in the trade sector of the Brazilian economy, with net operating revenues of nearly BRL 1.7 trillion and more than 7 million workers in 2018, according to the latest Annual Trade Survey from the Brazilian Institute of Geography and Statistics. The entry of large multinational companies into the Brazilian retail market, where it is worth highlighting Amazon, has negatively impacted the market of Brazilian retail companies, which still use archaic methods and disqualified labor in their operations and processes. Amazon provides better logistics services that directly add value to the quality of products offered through a leaner and more profitable supply chain. Additionally, the behavioral changes brought about by Covid-19 have made consumers more satisfied with online shopping experiences than with visits to physical stores. The increase in internet shopping and the reduction of visits to sales outlets has caused a migration of consumption to digital media, which may generate long-term transformations in the strategies of companies. Thus, the objective of this research is to provide a conceptual proposal of the use of logistics as a competitive advantage in retail organizations, considering the best management practices for the logistics sector. As a research methodology, a systematic literature review was adopted, based on the PRISMA protocol, allowing the identification of 94 records, 12 of which were included in the literature review, due to their adherence to the researched theme. The main contribution of this paper is the development of a conceptual proposal for the use of logistics as a competitive advantage in retail organizations, comprising five aspects: Information Systems, Application of KPIs aligned with the Strategic Objectives of the Organization, Creating Value for Products, Modern Management Concept and, Need for Organizations to recognize the Benefits and Advantages of Logistics.
{"title":"Logistics as a competitive advantage in retail organizations","authors":"Alberto Eduardo Besser Freitag, Fabiano Cunha da Silva","doi":"10.14807/ijmp.v12i9.1647","DOIUrl":"https://doi.org/10.14807/ijmp.v12i9.1647","url":null,"abstract":"Retail plays an important role in the trade sector of the Brazilian economy, with net operating revenues of nearly BRL 1.7 trillion and more than 7 million workers in 2018, according to the latest Annual Trade Survey from the Brazilian Institute of Geography and Statistics. The entry of large multinational companies into the Brazilian retail market, where it is worth highlighting Amazon, has negatively impacted the market of Brazilian retail companies, which still use archaic methods and disqualified labor in their operations and processes. Amazon provides better logistics services that directly add value to the quality of products offered through a leaner and more profitable supply chain. Additionally, the behavioral changes brought about by Covid-19 have made consumers more satisfied with online shopping experiences than with visits to physical stores. The increase in internet shopping and the reduction of visits to sales outlets has caused a migration of consumption to digital media, which may generate long-term transformations in the strategies of companies. Thus, the objective of this research is to provide a conceptual proposal of the use of logistics as a competitive advantage in retail organizations, considering the best management practices for the logistics sector. As a research methodology, a systematic literature review was adopted, based on the PRISMA protocol, allowing the identification of 94 records, 12 of which were included in the literature review, due to their adherence to the researched theme. The main contribution of this paper is the development of a conceptual proposal for the use of logistics as a competitive advantage in retail organizations, comprising five aspects: Information Systems, Application of KPIs aligned with the Strategic Objectives of the Organization, Creating Value for Products, Modern Management Concept and, Need for Organizations to recognize the Benefits and Advantages of Logistics.","PeriodicalId":54124,"journal":{"name":"Independent Journal of Management & Production","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43420014","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 : 2021-12-21DOI: 10.14807/ijmp.v12i9.1632
Marcos Aurélio da Rocha Nascimento, Lilian Mendes dos Santos, Adriano Maniçoba da Silva, R. Bueno, S. Machado, W. Tanaka
Capacity and queue management are currently used in financial institutions. With decreasing bank units due to internet services, research in this field has focused on improving to utilize their employees efficiently and achieve service excellence. In developing countries like Brazil, the customer has become more bank-accounted due to government and labor requirements, such as the wage credit became mandatory in the wage account. The paper's aim is motivated by a real-life case study to simulate discrete events to improve queue management at a Brazilian bank branch with the Arena software simulation environment. The simulation model was designed, tested, and applied considering the Discrete Event Simulation (DES) replication for queuing strategies on a real-world banking scenario. The arrival and service times were collected from 115 customers in Ferraz de Vasconcelos/SP city. It was performed in version 15.10 (2018) of the Arena software, with processor Intel core i3 CPU dual-core 3.07 GHz and 8GB of RAM. The results indicate that the bank agency should consider providing 9 to 11 operators to attend customers considering the arrival and service rate.
容量和队列管理目前在金融机构中使用。随着互联网服务导致银行部门的减少，该领域的研究集中在改进，以高效利用员工，实现卓越服务。在巴西等发展中国家，由于政府和劳工要求，客户的银行账户越来越多，例如工资账户中的工资信贷成为强制性的。本文的目的是通过一个真实的案例研究，利用Arena软件模拟环境模拟离散事件，以改善巴西银行分行的队列管理。模拟模型的设计、测试和应用考虑了真实世界银行场景中排队策略的离散事件模拟（DES）复制。从Ferraz de Vasconcelos/SP市的115名客户那里收集了到达和服务时间。它在Arena软件的15.10（2018）版本中执行，处理器为英特尔酷睿i3 CPU双核3.07 GHz和8GB RAM。结果表明，考虑到到达和服务费率，银行代理机构应考虑提供9至11名运营商来接待客户。
{"title":"Discrete event simulation applied to single queue management: a case study at a bank agency","authors":"Marcos Aurélio da Rocha Nascimento, Lilian Mendes dos Santos, Adriano Maniçoba da Silva, R. Bueno, S. Machado, W. Tanaka","doi":"10.14807/ijmp.v12i9.1632","DOIUrl":"https://doi.org/10.14807/ijmp.v12i9.1632","url":null,"abstract":"Capacity and queue management are currently used in financial institutions. With decreasing bank units due to internet services, research in this field has focused on improving to utilize their employees efficiently and achieve service excellence. In developing countries like Brazil, the customer has become more bank-accounted due to government and labor requirements, such as the wage credit became mandatory in the wage account. The paper's aim is motivated by a real-life case study to simulate discrete events to improve queue management at a Brazilian bank branch with the Arena software simulation environment. The simulation model was designed, tested, and applied considering the Discrete Event Simulation (DES) replication for queuing strategies on a real-world banking scenario. The arrival and service times were collected from 115 customers in Ferraz de Vasconcelos/SP city. It was performed in version 15.10 (2018) of the Arena software, with processor Intel core i3 CPU dual-core 3.07 GHz and 8GB of RAM. The results indicate that the bank agency should consider providing 9 to 11 operators to attend customers considering the arrival and service rate.","PeriodicalId":54124,"journal":{"name":"Independent Journal of Management & Production","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43015297","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 : 2021-12-01DOI: 10.14807/ijmp.v12i8.1461
Mohamed O. A. Bushara
Having clear picture on food security status and its major determinants helps policy makers and planners to introduce new policies that enhance food security. The study was aimed to evaluate the impact of policies, strategies and institution on food security and poverty status of the vegetables farmers in Gezira State with reference to the Blue Nile farmers. To achieve these objectives stratified random sampling technique was used to select the respondents from five localities lays along Blue Nile, so 150 farming households were interviewed. Food security Policy and strategy were collected by the mean of questionnaire targeting key line institutions. Poverty indices were calculated using expenditure as welfare indicator,Gini coefficient was applied. The results showed that the majority 75% of the respondents were above expenditure poverty line (7196)SDG. Moreover, the results showed that the poverty gap index was equal to five percent. Kamlin, Medani, East Gezira reported the higher expenditure distance from the poverty line (6 percent). The severity of poverty in the state is estimated to be two percent, likewise the severity of poverty in East Gezira was found to have a higher percentage (three percent). According to Gini coefficient the income distribution estimated at 0.46 while that for expenditure distribution is estimated at 0.31, these results showed a higher degree of inequality. The results showed that the poorest 20% of the population earned 0.06% of the total income while the richest 20% earned 45% of the total income. About 50.7% from the respondents use borrowing from others as one of their coping strategies. About 78%of policy makers said that there was organized team from all institutions dealing with food security and nutrition issue, all policy makers in the state said there was strategy concerning the food security and nutrition issues. The study recommended that the cash transfer needed to lift the poor out of poverty that each poor person needs five percent of the value of the poverty line.
{"title":"Impact of policies, strategies and agricultural institutions on food security and poverty status of vegetable farmers along the blue nile banks, Gezira State, Sudan (2017)","authors":"Mohamed O. A. Bushara","doi":"10.14807/ijmp.v12i8.1461","DOIUrl":"https://doi.org/10.14807/ijmp.v12i8.1461","url":null,"abstract":"Having clear picture on food security status and its major determinants helps policy makers and planners to introduce new policies that enhance food security. The study was aimed to evaluate the impact of policies, strategies and institution on food security and poverty status of the vegetables farmers in Gezira State with reference to the Blue Nile farmers. To achieve these objectives stratified random sampling technique was used to select the respondents from five localities lays along Blue Nile, so 150 farming households were interviewed. Food security Policy and strategy were collected by the mean of questionnaire targeting key line institutions. Poverty indices were calculated using expenditure as welfare indicator,Gini coefficient was applied. The results showed that the majority 75% of the respondents were above expenditure poverty line (7196)SDG. Moreover, the results showed that the poverty gap index was equal to five percent. Kamlin, Medani, East Gezira reported the higher expenditure distance from the poverty line (6 percent). The severity of poverty in the state is estimated to be two percent, likewise the severity of poverty in East Gezira was found to have a higher percentage (three percent). According to Gini coefficient the income distribution estimated at 0.46 while that for expenditure distribution is estimated at 0.31, these results showed a higher degree of inequality. The results showed that the poorest 20% of the population earned 0.06% of the total income while the richest 20% earned 45% of the total income. About 50.7% from the respondents use borrowing from others as one of their coping strategies. About 78%of policy makers said that there was organized team from all institutions dealing with food security and nutrition issue, all policy makers in the state said there was strategy concerning the food security and nutrition issues. The study recommended that the cash transfer needed to lift the poor out of poverty that each poor person needs five percent of the value of the poverty line.","PeriodicalId":54124,"journal":{"name":"Independent Journal of Management & Production","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45671490","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 : 2021-12-01DOI: 10.14807/ijmp.v12i8.1499
João Batista Ferreira, L. Castro Júnior
This research aims to build conceptual guidelines regarding price risk management through the agricultural derivatives market. Specifically, to identify the common price risk management methods and strategies employed, the risk analysis models of derivative markets, and the barriers to agricultural risk management. This is an integrative review, the search for literature on the models of risk management analysis of agricultural derivatives started by listing the largest possible number of keywords on the topic, in the Scopus and Web of Science. Forty-five publications were found meeting the pre-established criteria that served as the basis for this research. Based on the literature review, we list the main information on the subject and we also propose a theoretical model for analyzing the market risks of agricultural derivatives. Still, it was possible to notice that among the methodologies for measuring market risk, Value at Risk (VaR) stands out. We exemplify and demonstrate the existence of several statistical analyzes and mathematical models, as well as software available for the management of price risks. It is concluded that strategies with the futures and options market, even though they are the most efficient for risk management, lack incentives to become practical.
本研究旨在通过农业衍生品市场建立有关价格风险管理的概念指南。具体而言，确定常用的价格风险管理方法和策略、衍生品市场的风险分析模型以及农业风险管理的障碍。这是一篇综合综述，旨在通过在Scopus和Web of Science上列出尽可能多的关键词来搜索农业衍生品风险管理分析模型的文献。45份出版物符合作为本研究基础的预先确定的标准。在文献综述的基础上，我们列出了该主题的主要信息，并提出了一个分析农业衍生品市场风险的理论模型。尽管如此，我们还是可以注意到，在衡量市场风险的方法中，风险价值（VaR）脱颖而出。我们举例说明并证明了几种统计分析和数学模型的存在，以及可用于管理价格风险的软件。结论是，期货和期权市场的策略，尽管它们是风险管理最有效的，但缺乏实用性的激励。
{"title":"Risk analysis model and agricultural derivative market use","authors":"João Batista Ferreira, L. Castro Júnior","doi":"10.14807/ijmp.v12i8.1499","DOIUrl":"https://doi.org/10.14807/ijmp.v12i8.1499","url":null,"abstract":"This research aims to build conceptual guidelines regarding price risk management through the agricultural derivatives market. Specifically, to identify the common price risk management methods and strategies employed, the risk analysis models of derivative markets, and the barriers to agricultural risk management. This is an integrative review, the search for literature on the models of risk management analysis of agricultural derivatives started by listing the largest possible number of keywords on the topic, in the Scopus and Web of Science. Forty-five publications were found meeting the pre-established criteria that served as the basis for this research. Based on the literature review, we list the main information on the subject and we also propose a theoretical model for analyzing the market risks of agricultural derivatives. Still, it was possible to notice that among the methodologies for measuring market risk, Value at Risk (VaR) stands out. We exemplify and demonstrate the existence of several statistical analyzes and mathematical models, as well as software available for the management of price risks. It is concluded that strategies with the futures and options market, even though they are the most efficient for risk management, lack incentives to become practical.","PeriodicalId":54124,"journal":{"name":"Independent Journal of Management & Production","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43900523","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 : 2021-12-01DOI: 10.14807/ijmp.v12i8.1464
S. Majumder, M. Karim, M. Miah
The novel coronavirus is an issue of life and death. The main purpose of the study is to know the East Asian success story of controlling Covid-19 and identify which strategies could be a lesson for South Asia and to examine the influence of good governance on controlling COVID-19. Total daily cases of COVID-19 are collected from March 10 to June 15 for East Asian and March 4 to June 15 for South Asian countries. ARIMA forecasting, ADF test, stability test, and diagnostic tests are applied. The minimum value of AIC and BIC shows the appropriate model is ARIMA (0, 1, 1) for both regions. In the East and South Asian model, the coefficients of the constant term are -0.759451 and 198.0155, and coefficients of MA (1) are -0.715686 and -0.339701 respectively for both regions. It's significant at a 1% significance level and support our hypotheses that the total daily cases of COVID-19 decreasing into East Asia but increasing into South Asia and prove that the South Asia region has faced a lot of difficulties to tackle COVID-19 as most of the countries have not enough government capacity, weak institutions, limited resources, narrow government reaches to the vulnerable people and corruption compare to East Asian region and no actual strategies are yet noticeable from the governments of South Asia as a result transmission increases day by day. That is why; we think that South Asian countries could take lessons from East Asian countries as these countries are more successful to control COVID-19.
{"title":"Success story of controlling COVID-19 in East Asia: lessons for South Asia","authors":"S. Majumder, M. Karim, M. Miah","doi":"10.14807/ijmp.v12i8.1464","DOIUrl":"https://doi.org/10.14807/ijmp.v12i8.1464","url":null,"abstract":"The novel coronavirus is an issue of life and death. The main purpose of the study is to know the East Asian success story of controlling Covid-19 and identify which strategies could be a lesson for South Asia and to examine the influence of good governance on controlling COVID-19. Total daily cases of COVID-19 are collected from March 10 to June 15 for East Asian and March 4 to June 15 for South Asian countries. ARIMA forecasting, ADF test, stability test, and diagnostic tests are applied. The minimum value of AIC and BIC shows the appropriate model is ARIMA (0, 1, 1) for both regions. In the East and South Asian model, the coefficients of the constant term are -0.759451 and 198.0155, and coefficients of MA (1) are -0.715686 and -0.339701 respectively for both regions. It's significant at a 1% significance level and support our hypotheses that the total daily cases of COVID-19 decreasing into East Asia but increasing into South Asia and prove that the South Asia region has faced a lot of difficulties to tackle COVID-19 as most of the countries have not enough government capacity, weak institutions, limited resources, narrow government reaches to the vulnerable people and corruption compare to East Asian region and no actual strategies are yet noticeable from the governments of South Asia as a result transmission increases day by day. That is why; we think that South Asian countries could take lessons from East Asian countries as these countries are more successful to control COVID-19.","PeriodicalId":54124,"journal":{"name":"Independent Journal of Management & Production","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43398990","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 : 2021-12-01DOI: 10.14807/ijmp.v12i8.1487
Carlos Francisco Simões Gomes, Luiz Flavio Autran Monteiro Gomes, Luis Alberto Duncan Rangel, Fabricio Maione Tenório, M. Santos
This paper approaches the problem of ballast water treatment in ships. This has been identified as one of the four greatest threats to the world’s oceans. Solutions that have been considered for solving the problem are alternative water treatment technologies. In the case study reported in this paper three major water treatment technologies have been evaluated with the help of twenty-six criteria, quantitative as well as qualitative by using two discrete multicriteria methods, TODIM and THOR 2. The THOR 2 consists of the axiomatic evolution of the THOR method and both THOR 2 and THOR are made available through the THOR Web platform. Five groups of evaluation criteria are then considered: practicality; biological effectiveness; cost/benefit ratio; time frame for the implementation of standards; and environmental impact of the process' sub-products. In this paper a case study on choosing a ballast water treatment technology is presented. Three alternative ballast water management technologies are proposed by experts in the field and are evaluated with the help of twenty-six criteria, quantitative as well as qualitative. Each ballast water management method is described by a list of twenty-six attributes or criteria. After setting the problem in a clear way and consulting different experts, the two separate applications of both TODIM and THOR 2 are performed. What is denoted as Management Method #1 is indeed chosen as the best alternative according to both methods. The conclusion is that those two methods, although conceptually and analytically quite different, lead essentially to the same main results. Two other applications of both TODIM and THOR have indeed confirmed the convergence of results in spite of the conceptual and technical differences between the two methods. This suggests that formulating a decision problem in a correct, clear-cut way can be at least as important as the technical characteristics of the method per se.
{"title":"Ballast water management: technology choice comparing TODIM and THOR 2","authors":"Carlos Francisco Simões Gomes, Luiz Flavio Autran Monteiro Gomes, Luis Alberto Duncan Rangel, Fabricio Maione Tenório, M. Santos","doi":"10.14807/ijmp.v12i8.1487","DOIUrl":"https://doi.org/10.14807/ijmp.v12i8.1487","url":null,"abstract":"This paper approaches the problem of ballast water treatment in ships. This has been identified as one of the four greatest threats to the world’s oceans. Solutions that have been considered for solving the problem are alternative water treatment technologies. In the case study reported in this paper three major water treatment technologies have been evaluated with the help of twenty-six criteria, quantitative as well as qualitative by using two discrete multicriteria methods, TODIM and THOR 2. The THOR 2 consists of the axiomatic evolution of the THOR method and both THOR 2 and THOR are made available through the THOR Web platform. Five groups of evaluation criteria are then considered: practicality; biological effectiveness; cost/benefit ratio; time frame for the implementation of standards; and environmental impact of the process' sub-products. In this paper a case study on choosing a ballast water treatment technology is presented. Three alternative ballast water management technologies are proposed by experts in the field and are evaluated with the help of twenty-six criteria, quantitative as well as qualitative. Each ballast water management method is described by a list of twenty-six attributes or criteria. After setting the problem in a clear way and consulting different experts, the two separate applications of both TODIM and THOR 2 are performed. What is denoted as Management Method #1 is indeed chosen as the best alternative according to both methods. The conclusion is that those two methods, although conceptually and analytically quite different, lead essentially to the same main results. Two other applications of both TODIM and THOR have indeed confirmed the convergence of results in spite of the conceptual and technical differences between the two methods. This suggests that formulating a decision problem in a correct, clear-cut way can be at least as important as the technical characteristics of the method per se.","PeriodicalId":54124,"journal":{"name":"Independent Journal of Management & Production","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48117591","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 : 2021-12-01DOI: 10.14807/ijmp.v12i8.1518
Bruna Borges Soares, Lucas Farias de Sousa, Mariana Aguiar dos Santos
The adequacy of working conditions to safety standards has a fundamental importance in the company's environment. The efficient implementation of an Occupational Health and Safety Management System allows the reduction of risks associated with accidents; reduce costs to the employer and a strong ally in the competitive market when the safety indicator is a decisive factor in the choice of suppliers. The aim of this study was to evaluate occupational safety and health (OSH) practices at work in a plastic recycling plant located in northeastern Brazil, as well as to identify opportunities for improvement. Data collection was carried out from on-site visits and control measures were proposed for the risk factors identified. The evaluation made it possible to identify that the recycling activity is characterized by several occupational hazards, which are aggravated by inadequate working conditions. The non-conformity of jobs, the use of obsolete equipment and the lack of specific training to perform certain functions were identified as the most relevant aspects. For these, opportunities for improvement and adequation were connected. The study results can help other companies that perform the same activities to improve their performance in OSH based on the points of improvement presented.
{"title":"Evaluation of occupational safety conditions in a waste plastic recycling plant in Brazil","authors":"Bruna Borges Soares, Lucas Farias de Sousa, Mariana Aguiar dos Santos","doi":"10.14807/ijmp.v12i8.1518","DOIUrl":"https://doi.org/10.14807/ijmp.v12i8.1518","url":null,"abstract":"The adequacy of working conditions to safety standards has a fundamental importance in the company's environment. The efficient implementation of an Occupational Health and Safety Management System allows the reduction of risks associated with accidents; reduce costs to the employer and a strong ally in the competitive market when the safety indicator is a decisive factor in the choice of suppliers. The aim of this study was to evaluate occupational safety and health (OSH) practices at work in a plastic recycling plant located in northeastern Brazil, as well as to identify opportunities for improvement. Data collection was carried out from on-site visits and control measures were proposed for the risk factors identified. The evaluation made it possible to identify that the recycling activity is characterized by several occupational hazards, which are aggravated by inadequate working conditions. The non-conformity of jobs, the use of obsolete equipment and the lack of specific training to perform certain functions were identified as the most relevant aspects. For these, opportunities for improvement and adequation were connected. The study results can help other companies that perform the same activities to improve their performance in OSH based on the points of improvement presented.","PeriodicalId":54124,"journal":{"name":"Independent Journal of Management & Production","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43083472","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}
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