scholarly journals Optimal replenishment policy for items with three-parameter Weibull deterioration, stock-level dependent demand and partial backlogging

2018 ◽  
Vol 28 (1) ◽  
pp. 107-121 ◽  
Author(s):  
Smaila Sanni ◽  
Polycarp Chigbu

Our focus in this paper is on determining an optimal replenishment policy for items with three-parameter Weibull distribution deterioration and inventory-level dependent demand. We developed and analyzed the model under the assumption of partial backlogging. The three-parameter Weibull hazard rate captures the impact of already deteriorated items that are received into the inventory, as well as those items that may start deteriorating in future. The inventory-level demand reflects a real market demand for product whose sales is enhanced by stock on display. We study a case base examples to gain some quantitative insight into the proposed model and we perform sensitivity analysis to draw some managerial implications.

2020 ◽  
Vol 26 (3) ◽  
pp. 266-274
Author(s):  
Uttam Kumar Khedlekar ◽  
Priyanka Singh ◽  
Neelesh Gupta

This paper aims to develop a dynamic pricing policy for deteriorating items with price and stock dependent demand. In declining market demand of items decreases with respect to time and also after a duration items get outdated. In this situation it needs a pricing policy to sale the items before end season. The proposed dynamic pricing policy is applicable for a limited period to clease the stock. Policy decision regarding the selling price could aggressively attracts the costumers. Objectives are to maximize the prot/revenue, pricing strategy and economic order level for such a stock dependent and price sensitive items. We are giving numerical example and simulation to illustrate the proposed model.


2019 ◽  
Vol 11 (3) ◽  
pp. 853
Author(s):  
Mihaela Muntean ◽  
Ana-Ramona Bologa ◽  
Alexandra Maria Ioana Corbea ◽  
Razvan Bologa

The impact that business analytics (BA) has on companies’ performance will cause, in the near future, a significant increase in the demand for specialists in the field. Universities will play an important role in covering the deficit of professionals already reported by companies, provided that their offer is tailored to real market demands and their students are prepared to acquire the appropriate knowledge and skills. This paper proposes a framework for assessing the maturity level of BA in economic university programmes, based on the knowledge and technical skills needed by BA professionals. This maturity framework is applied to Romanian economic study programs to assess their analytical level and to identify their possible development directions. The educational programmes offer is then confronted with the real demand on the Romanian labour market, highlighting the types of jobs needed in the BA field and the related requirements for each of the analytical levels of the proposed model.


Author(s):  
Vikas Kumar

Abstract: In this paper, we formulate a deteriorating inventory model with stock-dependent demand Moreover, it is assumed that the shortages are allowed and partially backlogged, depending on the length of the waiting time for the next replenishment. The objective is to find the optimal replenishment to maximizing the total profit per unit time. We then provide a simple algorithm to find the optimal replenishment schedule for the proposed model. Finally, we use some numerical examples to illustrate the model. Keywords- Inventory, Deteriorating items, Stock dependent demand, Partial backlogging


Author(s):  
Scott Buechler ◽  
Richard Hartshorne ◽  
Haya Ajjan

There has been an increasing interest in the use of Web 2.0 applications to enhance the effectiveness of internal communication and improve knowledge management within the organization. However, extant Web 2.0 research has focused on the implementation, adaption patterns, and benefits, and little has been done to empirically examine the determinants of continuance use of Web 2.0 within the organization and its impact on knowledge performance. The objective of this study is to empirically examine the impact of both hedonic and utilitarian performance on the intention of knowledge workers to continue to use Web 2.0 applications within an organization, and then investigate the influence of the continuance use decision on knowledge management performance. The proposed model is tested using a survey of knowledge workers using Web 2.0 applications in their organizations. The results of the PLS analysis empirically validate the relationship between antecedents, continuance use, and knowledge management performance. Research and managerial implications of our findings are presented.


Author(s):  
Scott Buechler ◽  
Richard Hartshorne ◽  
Haya Ajjan

There has been an increasing interest in the use of Web 2.0 applications to enhance the effectiveness of internal communication and improve knowledge management within the organization. However, extant Web 2.0 research has focused on the implementation, adaption patterns, and benefits, and little has been done to empirically examine the determinants of continuance use of Web 2.0 within the organization and its impact on knowledge performance. The objective of this study is to empirically examine the impact of both hedonic and utilitarian performance on the intention of knowledge workers to continue to use Web 2.0 applications within an organization, and then investigate the influence of the continuance use decision on knowledge management performance. The proposed model is tested using a survey of knowledge workers using Web 2.0 applications in their organizations. The results of the PLS analysis empirically validate the relationship between antecedents, continuance use, and knowledge management performance. Research and managerial implications of our findings are presented.


2018 ◽  
Vol 10 (10) ◽  
pp. 3723 ◽  
Author(s):  
Longfei He ◽  
Han Gao ◽  
Xiao Zhang ◽  
Qinpeng Wang ◽  
Chenglin Hu

Managing material and cash flows attracts concerns of physical and financial departments in most companies. We, therefore, focus on optimizing the replenishment policy for a channel with stock-dependent demand considering item deterioration and order backlogging under two financial schemes of progressive trade credit periods. We take both the continuous payment regime (CPR) and discrete payment regime (DPR) into account in the progressive trading process, which generates ten distinct scenarios. We show that the profit functions may not necessarily be concave and accordingly give a corresponding computing algorithm, which relaxes the convexity assumptions of objective functions in the existing literature and consequently enrich the research. We address the formulation characterization and the logic of pursuing global optimization from models arising in all settings. Computational studies and simulations are conducted to illustrate the effect of various parameters on the optimal replenishing policy and profit. Numerical experiments show that the CPR scheme is dominantly prior to DPR for long replenishment time intervals, whereas it is exactly the opposite for short time intervals. We also examine the impact of the shortage cost and deteriorating rate on optimum ordering policy and channel performance. Finally, future research directions are addressed in the end.


2020 ◽  
Vol 54 (1) ◽  
pp. 69-79
Author(s):  
Bashair Ahmad ◽  
Lakdere Benkherouf

This paper proposes a procedure for determining the optimal replenishment policy for the simple inventory model with stock-dependent demand items, non-instantaneous deteriorating items and partial backlogging. The optimal policy is shown to be of a threshold form. That is, (i) if the time of the onset of deterioration is greater than or equal to the time at which partial-backlogging begins in the basic model (with no deterioration), then the optimal policy is determined by the parameters of the basic model, else (ii) The optimal policy corresponds to the unique critical point of the objective function for the model with non-instantaneous deterioration. Moreover, a simple test for deciding in favor of the former model is given. The procedure obtained is simpler and easier to implement than those existing in the literature. Numerical examples are presented for illustration.


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