Knod, E.M., Schonberger, R.J. 2000. OperationManagement Meeting Customers’ Demand , McGraw-Hill Irwin, New York.
Kumar, S.A., Suresh, N. 2009. Operationmanagement , New Age International Publisher, New Delhi.
Stevenson, W.J. 2002. Operationmanagement , McGraw-Hill, London.
Domingues, I., Machado, J.C. 2017. Lean thinking non-profit organization , [in:] Green and Lean Management , (red.) C. Machado, J.P. Davim, Springer, Switzerland.
Kristić, M., Skorup, A., Milosalević, B. 2015. Unique concept of standarization
Łukasz Muślewski, Michał Pająk, Bogdan Landowski and Bogdan Żół Żółtowski
Ship large-power steam boiler may serve as an example of complex critical technical system. A basis for rational control of operation of such system is knowledge on its capability of fulfilling the tasks to which it was intended. In order to make it possible to apply computer aiding to operational decision-making the capability should be described analytically. In this paper it was proposed to express the capability of ship steam boiler ( considered a complex system) to perform service tasks, by calculating components of its usability potential in a given instant t. To this end , was distinguished a set of steam boiler fundamental features which formulate space of its technical states. Values and characteristic intervals of the features were defined and this way sub-spaces of serviceability and non-serviceability states of the object in question were determined. Next, in the considered space, technical state of the boiler and its usability potential was determined. Owing to this it become possible to quantitatively express the steam boiler functioning capability which served as a basis for elaborating an algorithm for controlling the operational processes of a complex technical system under action. In this paper is also described a way of application of the presented method to calculation of ship steam boiler usability potential, which may be especially instrumental in the case of operational control of the boilers of the kind , equipped with interstage reheaters, i.e. those operating with high values of operational parameters.
Currently, ferry services are widespread in Europe, the Baltic States, the CIS and they continue to progress rapidly despite the unstable global economy. An activity of modern cargo-and-passenger fleet is based on nevertheless the perspective of stable profit generation. In conditions of ferry market instability, the important task is to ensure the break-even analysis in operation of vessels and justification of relevant quantitative indicators. At the same time, when managing the production activity of the ferry operators and, in particular, when analysing the ferry operation the indicator of its financial safety factor is of great importance. This paper refines static indicators and determines dynamic indicators of critical quantity of cargoes and passengers in ferry loading; gives analytical method of its justification; develops analytical method and presents graphical method of financial safety factor estimation when loading of cargo only or boarding of passengers only, as well as performing composite actions - loading of cargoes and picking up passengers.
The aim of the study was an cause and effect analysis of water losses in the collective water supply system of the city located in south-eastern Poland. The exploitation data provided by the water supply company from 2012 - 2016 was used for the analysis. The study uses the recommendations of the IWA (International Water Association) for the water balance making and determination of water loss indicators. The values of water loss indicators were compared to international standards and the technical condition of the network was determined. In addition, failure rate analysis of the water supply network was performed based on the failure rate index λ. Based on the performed analysis, it was found that the water supply company should consider renovation or replacement of the main network pipelines to increase the safety level of water supply, reduce the amount of water losses and the company exploitation costs.
Radio Frequency Identification Device (RFID) gained a lot of attention lately, due to the technology revolution, namely the IoT of things, which allowed a wide range of applications in the manufacturing and service sectors. The research reflects the importance of using the RFID tracking system in the supplier’s distributions operations, by reducing the level of inventories’ movement, increasing accuracy in depicting in a timely manner the shipping freight, with no paperwork inaccuracies. In this regard, the methodology is based on a semi-structured interview with managers of transportation companies who have provided information of the transportation performance in both cases of use or not use of the RFID technology. The paperwork mistakes and shipping delay were the indicators registered. In this matter, SPSS quantitative methods, Pearson correlation and linear regressions have been applied. The tables reveal the strong bivariate correlation between the RFID systems, paperwork mistakes and shipment delays. The regression analysis underlines the positive strong correlation between paperwork inaccuracies and shipment delays which means that an increase in document mistakes will lead to a certain amount of time increase in shipping processes.
Fotis Vouzas, Alexandros Psychogios and Loukas Tsironis
Furterer, S. and Elshennawy, A. K. (2005), “Implementation of TQM and Lean Six Sigma Tools in Local Government: a Framework and a Case Study”, TQM , vol. 16, n. 10, pp. 1179-1191.
Hope, C. and Muhlemann, A. (2001), “The Impact of Culture on Best Practice Production/ OperationsManagement”, International Journal of Management Reviews , vol. 3, n. 3, pp. 199-217
Itkin, D. (2008). “The effect of business ownership change on occupational employment and wages”, Monthly Labor Review , vol 131, n. 9, pp. 3-23.
Kamensky, J. (2008), “Is Lean Six Sigma Cool?”, PA Times
Optimal assignment of workers to supporting services in a hospital
Supporting services play an important role in health care institutions such as hospitals. This paper presents an application of operations research model for optimal allocation of workers among supporting services in a public hospital. The services include logistics, inventory management, financial management, operations management, medical analysis, etc. The optimality criterion of the problem is to minimize operations costs of supporting services subject to some specific constraints. The constraints represent specific conditions for resource allocation in a hospital. The overall problem is formulated as an integer program in the literature known as the assignment problem, where the decision variables represent the assignment of people to various jobs. The results of some computational experiments modeled on a real data from a selected Polish hospital are reported.
Ensuring transport safety is one of the key areas of transport companies’ operations. Management and organization processes not only in the intermodal transport are associated with decision-making in regard to adequate load securing, which is exposed to the inertia forces resulting from the movement of transport means. Regardless, the responsibility of individual entities in the process and the applicable insurance, the basic aspect to ensure transport safety is the correct securing of the cargo. In the article, the authors present elements of calculation models for different methods of securing cargo. Calculations were performed for the selected type of load on the specific semi-trailer meeting the requirements of the XL Code adapted for intermodal transport. The analysis of safety management in transport in the aspect of decision-making about the method of securing the cargo was also made.
Collaborate , Routledge, London.
Jenkins, R. (2001), Corporate codes of conduct. Self-regulation in a global economy , United Nations Research Institute for Social Development, Geneva.
Klassen, R. D., Whybark, D. C. (1994), Barriers to the management of international operations. Journal of OperationsManagement , Vol. 11, No. 4, pp. 385–396.
Murray, A., Haynes, K., Hudson, L. J. (2010), Collaborating to achieve corporate social responsibility and sustainability? Possibilities and problems. Sustainability Accounting. Management and Policy Journal , Vol
Over the past three decades, an increasing trend has been observed in research related to the consideration of human factors instead of solely based on the traditional aspects of project and operations management. However, much of the research done to date on human aspects has been conducted in developed countries in Europe, America and Australia, leaving developing countries, especially those in Africa, deprived of similar research. The purpose of the paper is to bridge this gap in knowledge by comparing the soft factors in the two contexts in order to provide an understanding of whether they have the same level of importance, regardless of their differences in economic, social and environmental aspects. The authors used semi-structured interviews to identify the critical soft factors for optimum performance of maintenance operations at a natural gas processing plant in Tanzania. The uncovered soft factors included top management engagement and oversight, trainings, ergonomics, collaboration, safety and security, recognition programs, and education and career growth. There was a high degree of conformity between the soft factors uncovered in the Tanzanian context and those in other African countries and other developing countries around the world. However, there was also conformity between the soft factors uncovered in developing and developed countries, which only differed in the level of the emphasis they placed on implementation.