Implementation Constraints Research Articles

Remaining Useful Life Prediction of Turbo Actuators for Predictive Maintenance of Diesel Engines

Prognostics applications in the automotive industry are growing rapidly and customers have begun to expect this capability. Remaining useful life (RUL) models are an important aspect of a prognostic as they affect both how far in advance and with what confidence failures can be predicted. Model selection and design must include technical considerations such as mathematical complexity and training data availability, as well as business considerations such as implementation plans, constraints, and risks of inaccurate predictions. This paper compares different RUL models that have been developed for turbo actuators on diesel engines, with the business objective of advising bus fleet customers on preventive maintenance intervals. The design, development, validation, and resulting prediction accuracy of each RUL model is detailed. A selection process is then applied to choose the model best suited to the intended purpose. In doing so, the paper sheds light on strengths and weaknesses of deep learning RUL models over statistical RUL models. The paper also focuses on the state-of-the-art deep learning network “Tabnet” and its results for useful life predictions. Among the different methods, Accelerated Weibull Failure Time model provides better predictions with a concordance of 0.94 and ~15% less error than any other model.

Choose your own learning adventure

In higher education, is it necessary for every learner to take the same path through the course to complete the course? Detecting a number of plagiarism instances in a course resulted in the need to research and implement strategies to promote academic integrity. In a reflective study of teaching Indigenous Studies online over the past four years at two different institutions, this paper proposes how designing choices in online learning opportunities can promote academic integrity. Not without challenges, the constraints in implementation encountered over the fours years noted pre-designed online or continuous enrolment online courses where there is inability to personalize content or make revisions and difficulty building a relationship in order to personalize the course experience with larger online class sizes at some institutions and/or faculties.

Applications of Game- Theory in Active Strategic Portfolio Management- the Case of Hedge - Funds Adaptation for the Real Constraints in Romanian Capital Market

Abstract The application is focused on strategies for portfolio management in the case of hedge-funds for emerging markets taking into account the severe constraints for a real-world implementation. In the case of Romanian capital market, the design of a hedge-fund architecture should respond to the typical constraints for using alternative strategies. Beyond the liquidity problems there exits only a limited set of alternative instruments and strategies with impact on diversification, on the functionality and efficiency. The objective is to develop a better understanding of alternative actions and innovations for real adaptation of the architecture of a hedge-fund at these emerging market conditions, especially the lack of short and hedging instruments and the liquidity problems. Based on this new innovative framework that could capture the value of multiple rotating satellite sub-portfolio paradigm, as an active strategy, it is possible to build a different paradigm for active portfolio management in a dynamic manner. Based on an adequate dynamic of rotation of these sub-portfolios it results an optimal risk- return-liquidity profile for the whole hedge-fund portfolio, adaptable for different contexts.

Kajian Literatur (Systematic Literature Review): Kendala Penerapan Sistem Pemerintahan Berbasis Elektronik (SPBE)

Electronic-based Governance System (SPBE) or known as e-government is an effort to utilize information and communication technology to support government systems and improve the effectiveness and efficiency of government institutions' performance. The implementation of e-government is expected to improve the quality of public services. E-government in the country will usually face many obstacles that can be thwarted in its application. Previous research has discussed more about the constraints of e-government implementation in developing countries. This study aims to identify the obstacles faced in the application of SPBE/e-government in developing and developed countries. This research uses systematic literature review method by Kitchenham. The literature used in this study was taken from several digital Library, namely ACM Digital Library, IEEE Xplore, Science Direct, and Scopus. The results of the study found that constraints in its application in developing and developed countries can be categorized into seven constraints / aspects, namely IT Infrastructure, Human Resources, Policy / Legislation, Politics, Economy, Geography and Culture. These constraints can be a reference for the government to make improvements in the implementation of SPBE so that the quality of services can be better

Automated Leadership Selection Educational Projects Based on Genetic Algorithms

Purpose or research.The purpose of the study is to conduct a research of the possibility to use automated methods of finding a solution for the task of forming a selection of candidates in solving a wide range of business problems with the possibility of the influence of such factors as: requirements for the quality of business processes, restrictions on the competence of candidates, the employment of candidates in other processes of the company, planned urgency of fulfilling tasks, the amount of tasks in the pool and expected tasks, tasks characteristics, private policy of the company when selecting candidates, company's policy on risks.Methods.A typology of innovative business tasks is given by the subject area, the range of target results, the duration of execution, etc. External and internal factors are considered to ensure the effective operation of the project team and the success of the project. There are offered sets of attributive characteristics for assessment of projects quality and potential projects. The structure of the algorithm for solving the problem of creating a selection of candidates for solving a set of problems is considered. Prerequisites for using principles of genetic programming in solving the problem under consideration are given. Search algorithm implementation parameters, criteria and constraints are defined. Algorithm was implemented as well as modeling in the Jupyter Lab v2 environment. The results are described in the text. A relative analysis of practical effectiveness of the algorithm was carried out depending on the modeling parameters to justify the selection of their values.Results.The task of creating a selection of candidates for the implementation of projects pool considering a number of factors was described during the study. An approach to solving the problem based on a genetic heuristic search algorithm has been developed. A numerical simulation was performed in Jupyter Lab v2. Simulation results were analyzed, and algorithm parameters were selected.Conclusion.The proposed approach allows not only automatize the selection of managers based on the accumulated data history, but also to adjust the established process to change the vector of organization development. The interaction of education and informatics (information technology) can enrich and expand the field of both sciences in the field of recruitment of innovative project teams. Their object analysis, supplemented by genetic programming capabilities, together allows you to achieve specified qualities of the head of innovative project teams that help maximize business benefits while minimizing material costs. As a result of computational experiments using mathematical apparatus and genetic algorithm technologies, it is necessary to emphasize the possibility of extrapolating such approaches to any level of implementation of innovative projects.

Strategic Environmental Assessment: Current Status, Practices and Challenges in Bangladesh

Strategic environmental assessment (SEA) is an appraisal device of policies, plans, and programs and has evolved from an alternative of environmental impact assessment (EIA) to a potential environmental policy integration tool in national policy planning. Bangladesh has likewise rendered SEA in its environmental evaluation framework to consider environmental and social outcomes of policies, plans, and programs(PPPs), but the practice and current situation of SEA in Bangladesh is unknown to all. Considering this crisis the study was carried out to analyze the present status of SEA as well as to find out the constraints for successful SEA implementation in Bangladesh as an approach to integrate environmental considerations in the PPPs. The data were collected through multiple methodological techniques including document review as well as survey by standard questionnaire and key informant interviews (KIIs) with different stakeholders of the various backgrounds of Bangladesh related to policymaking. The study showed that SEA first appeared in Bangladesh in 2006 with the support of the World Bank as a donor agency and the first SEA was done in Bangladesh on the Dhaka metropolitan development plan in 2007. But through the enactment of the National Environmental Policy 2018, SEA gained formal status in the country. Now, This study also revealed that most of the organizations (government and non-government) i.e. 55.77 percent never practice SEA whereas only 15.38 percent of organizations of Bangladesh practice SEA on regular basis, and 28.85 percent of organizations practiced partially for assessing SEA in their proposed PPPs. A diverse list of constraints such as lack of political will, lacking awareness of SEA, inadequate finance, weak enforcement of environmental law, and inadequate knowledge of the implementation of SEA in PPPs were identified. Therefore, awareness building, capacity development, and proper training on SEA in Bangladesh are urgently needed.

EFEKTIVITAS PROGRAM USAHA PENINGKATAN PENDAPATAN KELUARGA SEJAHTERA (UPPKS) UNTUK PEMBERDAYAAN MASYARAKAT MISKIN

BKKBN as an organizer of family empowerment of the government to create a program Families Economic Empowerment by forming a group container (UPPKS), which is in its implementation in the city of Padang Panjang still encountered a number of problems. The purpose of this research is to determine the level of program effectiveness (UPPKS) in empowering the poor in Padang Panjang city, here are also seen what obstacles are encountered during program implementation and what efforts can be made to overcome these obstacles. The method used in this research is mixed methods were used to measure the effectiveness of the UPPKS program using the model of evaluation CIPO by Stufflebeam, then to get deeper conclusions regarding the results of the study used qualitative methods through observation and interviews. The research findings indicate that the effectiveness program (UPPKS) for empowerment of the poor in Padang Panjang been effective with 70.55% good category. Although the implementation of the program UPPKS in accordance with existing procedures but has not been fully able to improve the welfare of its members. This can be seen with still found some constraints in implementation, obstacles encountered can be categorized into two forms of internal constraints and external constraints. Internal constraints such as: weak supervision of the program, the lack of capital coming from the government, coaching is not evenly distributed. External constraints such as: the use of aid funds is not maximized, the lack of creativity and innovation groups in finding and utilizing financial resources, delays in repayment of the loan. Efforts are made to overcome these obstacles is to involve family welfare III acted as a foster father in group, guidance, and constraints derived from program participants made efforts such as mentoring, conducting proactive system for members jammed in payments.

Roblems and Constraints of Authentic Assessment among Children s Early Education Teachers

Authentic assessment aims to plan the individual learning of children by identifying specific needs, assistance or services. The current study aims to identify constraints faced by them in implementing authentic assessment of teachers in early Childhood Education in North Aceh. This study was conducted through three phases, namely the first, the study of problems and constraints of teachers in implementing assessment practices on 70 early Childhood teachers; the second phase, reviewing the teacher documents on the six selected early Childhood teachers and the third examining the constraints from the perspective of five teachers in implementing authentic assessments. The first and second phase analyzes used descriptive statistics. The third phase study data were analyzed qualitatively. Findings show that 70 (100%) teachers get strong emphasis from parents to teach reading, writing and counting to their children. The findings, on the other hand, have identified the constraints faced by teachers, namely the influence and demand from families who want their children to be able to read, write and count as well as testing using written tests. Lack of instruction from the Ministry of Education is also a constraint in implementation.

Strategies on technology management for coffee smallholder to promote the smart farming implementation

Smart farming is becoming increasingly important in providing technology infrastructure for the coffee agribusiness to develop a competitive value chain. On the other side, most coffee smallholders are characterized by limited access to technology and low technology adoption. As development and exploitation of technological capabilities, technology management would be a strategic way to promote smart farming implementation. Hence, this study aims twofold: (1) to identify the constraints in smart farming implementation, and (2) formulate technology management strategy in supporting smart farming for the coffee smallholder. The study was conducted in West Lampung, and the analysis method used pairwise comparison by using Saaty’s scale. The analysis reveals that respondents’ constraints related to knowledge and skills, technology, information, capital, organizational, and resources aspects. The results of this study provide useful information about technoware, humanware, inforware, orgaware, and cysnetware, as components of technology management, to support smart farming for the coffee smallholder.

Management Analysis of Pandemic Covid-19 in Kepung, Kediri Districts

Pandemic is a recurring event that causes a global recession and threatens human security. The Covid-19 pandemic in Indonesia is predicted to have very high morbidity and mortality rate. The strategy has been implemented but the case is still high, so it needs to be evaluated of the management factor from task force and community health center. The research method used is descriptive qualitative, with purposive sampling and indeep interview of 16 main informants and 2 triangulation informants. The research results from the input aspect of man and money are sufficient, lack of material becouse of regulations, budgets, stock and information that cause negative stigma and inadequate movement of task force and inadequate mentoring methods due to weak coordination. The planning aspects consider community input (batoom up), fulfillment of guidelines and instructions from the health office or district task force (top down) with a system of changes to the Financial Budget. The conclusion is that the preventive and promotive roles of community health center management and task forces are not maximal in efforts to deal with a pandemic becouse of limited inputs and constraints in organization and implementation.

Optimal asset allocation strategies for international equity portfolios: A comparison of country versus industry optimization

With greater economic and financial market integration, it is critical for asset managers to choose the investment universe that provides superior diversification and performance opportunities. Therefore, it is important to investigate whether international diversification benefits arise from industry rather than country allocations. We employ various asset allocation strategies such as 1/N, Risk-Parity, Minimum-Variance as well as Mean-Variance, Bayes-Stein and Black-Litterman to analyze whether an industry-based or a country-based approach provides a superior performance. We also investigate time-varying effects for expansionary and recessionary sub-periods, equity-only and equity-bond portfolios as well as portfolios with and without short positions. For the 1986–2020 period, we find that industry-based asset allocation strategies attain higher Sharpe and Omega ratios and higher alphas compared to country-based allocations. The Sharpe ratio differences are economically relevant yet statistically insignificant in many analyzed settings. The outperformance of sector allocations are independent of the optimization approach and implemented constraints and whether bonds are included in the investment universe. This is consistent with the observation that countries have become more integrated and higher correlated than industries, resulting in lower country and relatively higher industry diversification benefits. Especially for periods with unpredictable shocks, industry allocations have superior performance. Our results have important implications for international asset allocation decisions.

Redox-Mediated Water Splitting for Decoupled H2 Production

Green H2 production from renewable energy sources by water splitting is desired to reduce the use of fossil fuels and CO2 emissions. The past decade has witnessed the fast development of electrolytic water splitting for H2 generation, with most of the studies focusing on the development of superior electrocatalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Equally important is the innovation of water splitting system design to tackle the critical issues confronted by conventional water electrolysis. Some interesting developments have recently emerged with additional redox-mediated process to separate the HER and OER in time and space. In this Review, the various strategies for decoupled H2 production are critically reviewed. Based on the additional process, which is introduced in conjunction with the electrochemical process for decoupled electrochemical or chemical H2 production, the distinct operating principle is highlighted for each strategy, and the underlying connections to other strategies are delineated. Lastly, the implications of the decoupled operations in addressing the formidable issues of conventional water electrolysis, their inherent constraints for practical implementation, and potential solutions are broadly discussed.

Home education for children with autism spectrum disorder during the COVID-19 pandemic: Indonesian mothers experience

This study aimed to explore the experiences of mothers and efforts in implementing home education for children with autism, during the COVID-19 pandemic in Indonesia. Five mothers were recruited as participants and interviewed online, as the data obtained were examined through the use of thematic analysis. Also, three main themes were shown, (1) Mothers' experience in implementing home education, as regards adaptability and burden of caregiving, (2) The constraints in home education implementation, as regards maladaptive behaviours of ASD and emerging negative emotions, (3) The efforts to alleviate barriers, as regards problem-focused and religious copings. Also, the implementation of home education during the pandemic was less than optimal, due to the increase in maladaptive behaviours of the autistic children, low adaptability, the burden of caregiving, and emerging negative emotions. Appropriate coping strategies were also observed to help mothers in alleviating the constraints to implementing home education and parenting stress.

A renewal equation model to assess roles and limitations of contact tracing for disease outbreak control.

We propose a deterministic model capturing essential features of contact tracing as part of public health non-pharmaceutical interventions to mitigate an outbreak of an infectious disease. By incorporating a mechanistic formulation of the processes at the individual level, we obtain an integral equation (delayed in calendar time and advanced in time since infection) for the probability that an infected individual is detected and isolated at any point in time. This is then coupled with a renewal equation for the total incidence to form a closed system describing the transmission dynamics involving contact tracing. We define and calculate basic and effective reproduction numbers in terms of pathogen characteristics and contact tracing implementation constraints. When applied to the case of SARS-CoV-2, our results show that only combinations of diagnosis of symptomatic infections and contact tracing that are almost perfect in terms of speed and coverage can attain control, unless additional measures to reduce overall community transmission are in place. Under constraints on the testing or tracing capacity, a temporary interruption of contact tracing may, depending on the overall growth rate and prevalence of the infection, lead to an irreversible loss of control even when the epidemic was previously contained.

Procurement Mechanisms for Assortments of Differentiated Products

Many procurement agencies around the world construct assortments of differentiated products from which consumers can buy from. A leading example is framework agreements, a type of procurement mechanism commonly used by governments. This type of practice is studied head on. The authors introduce a mechanism design formulation of the procurement agency’s problem and solves it under progressively more realistic implementation constraints. The results show how restricting entry of close-substitute products into the assortment can increase price competition, reducing spending significantly, without much damage to the variety offered to consumers. Furthermore, the results have practical implications that can be used by procurement agencies to increase consumer surplus and have already been used to redesign FAs in the Chilean government.

Adoption of Olive Farmers to the Integrated Pest Management Techniques in the Syrian Coastal Region

Sakr, L.M., M.J. Al-Abdallah and A.N.M. Bashir. 2021. Adoption of Olive Farmers to the Integrated Pest Management Techniques in the Syrian Coastal Region. Arab Journal of Plant Protection, 39(1): 69-78. A survey was conducted to investigate adoption of integrated pest management (IPM) approaches by olive farmers, through determining their knowledge about the most important olive pests in the Syrian Coastal Area, and the relationship between growers’ personal traits and their adoption of IPM approaches. This evaluation was carried out in 42 villages in Tartus and Lattakia governorates along the Syrian coast in 2017 and 2018 growing seasons. Data were collected through face-to-face interviews with a random sample of 420 olive growers by using a questionnaire designed for the purpose of this study. Collected data on frequencies, percentages, averages, standard deviations, relative importance index, in addition to correlation coefficients, were used for data analysis. Results showed that: the Spilocaea oleagina (Cast.), Bactrocera oleae (Rossi), Prays oleae (Bernard) and Euphyllura olivina (Costa) were the most prevalent pests in the researched area, whereas Margaronia unionalis (Hubner), Leveillula taurica (Lév.), and Phloeotribus scarabaeoides (Bernard) were less common. Almost 57.78 and 32.8% of farmers had medium level of IPM adoption in Tartus and Lattakia governorates, respectively. Positive significant correlation was found between adoption levels and each of degree of participation in extension activities and knowledge levels, whereas negative significant correlation was found between adoption levels and each of land property fragmentation and constraints of IPM implementation. Based on this findings it can be concluded that extension activities need to be intensified and more emphasis should be placed on training programs to improve growers’ knowledge and adoption of the concepts and applications of IPM practices. Keywords: Integrated pest management, olive growers, Syrian coast, knowledge diffusion level, adoption.

The obstacles of green building implementation in Semarang city

The Semarang City Government has issued a Mayor Regulation on Green Buildings since 2019. Since then the construction of buildings with a certain floor area in Semarang City must follow this regulation. Evaluating implementation constraints related to green building construction based on the experience of the development actors, is an important thing to do. This study aims to identify obstacles in realizing green buildings in the city of Semarang. Data collection was carried out through a questionnaire survey of respondents from development actors involved in green buildings such as contractors, consultants and project owners and bureaucratic officials related to green building licensing. Data analysis was performed using descriptive analysis to reach agreement between respondents. Next, a hierarchy of these constraints will be sought. Constraints found in realizing green buildings are: lack of socialization from the city government, alternative materials, lack of best practices, experts, and financing. For this reason, a strategy is needed to overcome these obstacles from every aspect or based on a combined consideration of all aspects.

Implementation Constraints on Israel–Palestine Water Cooperation: An Analysis Using the Water Governance Assessment Framework

This study uses a diagnostic and multidisciplinary water governance assessment framework to examine the main factors influencing water cooperation on the shared Mountain Aquifer between Israel and Palestine. It finds that effective cooperation between Israel and Palestine is unlikely in the foreseeable future if both parties persist with the business-as-usual approach. What constrains the two parties from achieving consensual agreement are political tensions, the constraints of current technology, the different perceptions of the value of the shared water, the mistrust between the two parties, the lack of external enforcement mechanisms, and the impacts of the domestic political environment.

IMPLEMENTASI PERATURAN WALIKOTA PADANG NOMOR 36 TAHUN 2018 TENTANG PENGENDALIAN PENGGUNAAN KANTONG BELANJA PLASTIK DI KOTA PADANG

This research describe about Implementation of Padang Mayor Regulation to controlling the use the plastic shopping bag in Padang city. Background of this research is because we find some problems of the use plastic shopping bag in Padang city. This research aims to explain about the implementation of Padang Mayor Regulation 36 of 2018 in controlling the use plastic shopping bag in Padang city. This studied use a qualitative methods and descriptive approaches. The studied was conclude at Enviromental Services in Padang. The informants are determined by thecnique purposive sampling. Data in this studieduse primary data and secondary data. Data collection was carried out by means of observation, interviews, and documentation. So the data obtained can be conclude from the data obtained in the field. The point of view of this studied is the Implementation of Padang Mayor Regulation number 36 of 2018 in controlling the use of plastic shopping bag in Padang city is not optimal. In the implementation of socialization carried out by Enviromental Services was good. But as for the constraints in implementation of this regulation of mayor is public awareness to redesign the use of plastic shopping bags is still lacking. And then, the Enviromental Services not firm in providing penalties or disincentive to business actors who still provide and eliminate plastic shopping bags at their stores. Both in modern markets and traditional markets in the city of Padang.

Enhancing supplier capability through Six Sigma enablers

PurposeThe purpose of this paper is to identify, analyze and orient the enablers of Six Sigma to enhance supplier capability for an Indian manufacturing supply chain (SC).Design/methodology/approachIn total, nine enablers of Six Sigma were identified through an extensive literature review and discussion held with managers/senior managers in different Indian manufacturing companies. The interpretative structural modeling (ISM) approach is applied to the Indian auto ancillary company for developing and analyzing the structural framework of enablers to enhance the supplier capability.FindingsThe enablers such as top management commitment and leadership, supply chain management, standardization, training and education, human resource management and project selection and execution methodology of Six Sigma related to supplier capability have emerged as the prominent enablers, which are driving force in the system for the Indian manufacturing SC.Research limitations/implicationsThis study is restricted to only one Indian manufacturing company. Therefore, the outcomes of the study should not be generalized. Further studies may be carried out for several Indian manufacturing industries to get a more comprehensive implementation approach, their validity and their variation across the different industries.Practical implicationsThe simplicity and clarity of the proposed structural framework of Six Sigma helps in the identification and orientation of enablers for the successful implementation of Six Sigma in the SC. The proposed structural framework can be applied to different manufacturing SCs by allowing managers to structure the enablers considering their unique implementation constraints, which can reflect their priority considerations.Originality/valueThe study goes beyond the conceptual discussion of supplier capability issues. The supplier capability cannot be seen as a standalone approach irrespective of the constraints from the supplier domain as it is in synchronization with the entire SC performance. The enablers and their orientation with respect to the SC are providing a unique contribution toward supplier management planning. The outcomes from the proposed structural framework are used for developing action plans for organization “A” or other organizations to build suitable supplier capability in the SC.