Uncertainty Management in Remanufacturing Decisions: A Consideration of Uncertainties in Market Demand, Quantity, and Quality of Returns

2015 ◽  
Vol 1 (2) ◽  
Author(s):  
A. Raihanian Mashhadi ◽  
Behzad Esmaeilian ◽  
Sara Behdad
Keyword(s):  
Quality Level ◽  
Chance Constrained Programming ◽  
Market Demand ◽  
Environmental Legislation ◽  
Take Back ◽  
Return Flows ◽  
Constrained Programming ◽  
The Cost ◽  
Original Equipment Manufacturers

As market demand for remanufactured products increases and environmental legislation puts further enforcement on original equipment manufacturers (OEMs), remanufacturing is becoming an important business. However, profitability of salvaging operations is still a challenge in remanufacturing industry. Several factors influence the cost effectiveness of remanufacturing operations, including uncertainties in the quantity of return flows and market demand as well as variability in the quality of received items. The objective of this paper is to develop a stochastic optimization model based on chance-constrained programming to deal with these sources of uncertainties in take-back and inventory planning systems. The main purpose of the model is to determine the best upgrade level for a received product with certain quality level with the aim of maximizing profit. An example of personal computer is provided to show the application of the method.

Upgrade Planning of Used Products Considering Uncertainty in Market Demand, Quantity and Variability in Quality of Returns

2014 ◽  
Author(s):  
Ardeshir Raihanian Mashhadi ◽  
Sara Behdad
Keyword(s):  
Profit Maximization ◽  
Optimization Method ◽  
Quality Level ◽  
Market Demand ◽  
Environmental Legislation ◽  
Take Back ◽  
Return Flows ◽  
The Cost ◽  
Original Equipment Manufacturers

Remanufacturing is becoming an important business as market demand for remanufactured products increases and environmental legislation puts further enforcement on Original Equipment Manufacturers (OEMs). However, profitability of salvaging operations is still a challenge in remanufacturing industry. Several factors influence the cost effectiveness of remanufacturing operations, including variability in the quality of received used items and uncertainty in the quantity of return flows and the market demand for those products. Remanufacturing companies need to handle these sources of uncertainties in order to improve their profitability. The current paper develops a Stochastic Optimization method to model these sources of uncertainties in take-back and inventory planning systems. The main purpose of the model is to determine the best upgrade level for a received product with certain quality level with the aim of profit maximization. An example of personal computer is provided to show the application of the method.

scholarly journals Consideration of quality change of railway transport maintenance operations in managing costs of goods transport

2018 ◽  
Vol 239 ◽  
pp. 03005
Author(s):  
Lidia Shkurina ◽  
Eugenia Maskaeva ◽  
Stanislav Maskaev
Keyword(s):  
Cost Management ◽  
Rolling Stock ◽  
Market Demand ◽  
Railway Transport ◽  
Quality Change ◽  
The Cost ◽  
The Impact ◽  
Financial Result ◽  
Freight Market

the authors reviewed the quality of operational work of railway transport in the cost management system, presented methods for assessing the impact of the quality of rolling stock on the current costs of transportation activities, considered the issues of the impact of the quality of operational work on the formation of freight market demand and of financial result of the transport company - the owner of infrastructure and traction rolling stock, represented methods of assessing financial and economic efficiency of improving the quality of operational work for the company - a participant of the freight market.

scholarly journals THE IMPACT OF FINANCIAL INCENTIVES ON THE QUALITY OF EARLY DIAGNOSIS IN THE PRACTICE OF A DENTIST WHO PROVIDES QUALITY TREATMENT

2021 ◽  
Vol 10 (34) ◽  
Author(s):  
S.S GRECHIKHIN ◽  
Keyword(s):  
Early Diagnosis ◽  
Financial Incentives ◽  
Diagnostic Methods ◽  
Quality Level ◽  
X Rays ◽  
High Quality ◽  
Diagnostic Measures ◽  
The Cost ◽  
The Impact

Diagnostics in the practice of a dentist is the key to quality treatment. However, depending on the quality of services provided, the cost of diagnostic methods is set. For a dentist working in a private office, the key to successful diagnostic measures at a high quality level is a priority. However, these methods are expensive for the patient. The purpose of this study is to study the impact of financial incentives on the quality of early diagnosis in the practice of a dentist who provides quality treatment. In the study, we studied clinical cases with full and partial study in terms of diagnostic and neglect x-ray diagnosis from the doctor and from the patient due to a misunderstanding of the importance and necessity of this manipulation. In statistical data analysis, the resulting regression models use a binary variable as a dependent variable on the level of financial costs. Thus, in the course of our research, we found that the number of x-rays significantly increases when dentists receive a fee for services, rather than a salary, and when patients are exempt from paying for additional diagnostic methods. Our results show that financial incentives significantly influence additional high-quality and complete examination of patients.

scholarly journals Pricing of Complementary Products in Online Purchasing under Return Policy

2021 ◽  
Vol 16 (5) ◽  
pp. 1718-1739
Author(s):  
Ata Allah Taleizadeh ◽  
Shima Rezvan Beydokhti ◽  
Leopoldo Eduardo Cárdenas-Barrón ◽  
Somayeh Najafi-Ghobadi
Keyword(s):  
Demand Elasticity ◽  
Quality Level ◽  
Selling Price ◽  
Complementary Products ◽  
Quality Cost ◽  
Return Policy ◽  
Perform Sensitivity Analysis ◽  
Quality Of Products ◽  
The Cost

In online purchasing, customers may return products due to dissatisfaction with the quality of the product, and receive a refund based on the return policy, which is determined by online distributors. Online distributors can offer generous policies to attract more customers, but at the cost of reducing total profits. In this paper, the effect of the pricing and quality of complementary products (products sold together with other items) in online selling under the return policy is investigated. For this purpose, a mathematical model is developed to obtain optimal values for selling price, refund amount, and quality of products. Based on analytical results, a solution algorithm is proposed to solve the numerical examples and perform sensitivity analysis. Findings reveal that, while increasing the sensitivity of demand with respect to the refund amount, the price, quality, and refund on returned products should be increased. In addition, the online distributor should increase the quality of products when customers are more sensitive to the quality of products. Among other results, the selling price is shown to be negatively affected by demand elasticity with respect to price. In this situation, the online distributor should reduce the quality level and the refund amount for returned products to avoid a sharp decline in profit. In addition, when the quality cost is high, the price and quality should be decreased and the refund amount unchanged.

A Probabilistic Approach to the Determination of the Optimum Cutting Conditions

1972 ◽  
Vol 94 (4) ◽  
pp. 1099-1107 ◽  
Author(s):  
K. Iwata ◽  
Y. Murotsu ◽  
T. Iwatsubo ◽  
S. Fujii
Keyword(s):  
Analytical Method ◽  
Production Cost ◽  
Probabilistic Approach ◽  
Cutting Conditions ◽  
Chance Constrained Programming ◽  
Optimum Cutting ◽  
Constrained Programming ◽  
The Cost ◽  
Probabilistic Nature

An analytical method applying a chance-constrained programming concept is proposed to determine the optimum cutting conditions considering the probabilistic nature of the objective function and constraints. The proposed analytical method is illustrated through an application to an example. It is shown that the optimum cutting conditions are significantly affected by the probabilistic nature of coefficients in the constraints. The effect of the uncertainty of the predicted tool life in the production cost function on the optimum cutting conditions is also considered. The study further investigates the effects of the cost-time parameter and allowable maximum force on the optimum conditions and the resulting production cost.

scholarly journals Penerapan Quality Control pada Souvenir Logo PNP dengan Metode Box Plot dan Six Sigma

2021 ◽  
Vol 14 (2) ◽  
pp. 112-117
Author(s):  
Menhendry Menhendry ◽  
Alfian Alfian ◽  
Elvis Adril ◽  
Junaidi Junaidi ◽  
Zulhendri Zulhendri
Keyword(s):  
Data Processing ◽  
Six Sigma ◽  
Quality Level ◽  
Market Demand ◽  
Sigma Level ◽  
Weight Variation ◽  
Level Method ◽  
Box Plot

The quality of a product determines the level of market demand. This paper discusses the determination of the quality level of plastic molding with the sigma level method which uses the Box Plot to determine the desired quality limit. The purpose of this research is to determine the level of quality of product using statistics. The object of this research is to determine the weight variation of the souvenir of PNP logo with a weight indicator. The experiment were carried out on 200 samples taken at random.Then each sample is numbered from 1 to 200. Each sample is weighed carefully. The results obtained were processed using a box plot to obtain the numbered of rejected samples from 200 samples that were weighed. The result of data processing  obtained 19 reject products from 200 products tested. From this data there are 9,5% of products that do not meet the desired specifications. Furthermore, the sigma level is determined from the results of data processing using a box plot. DPMO of 9.5% is 95000 Defects per Milion Opportunities. The result of determining the sigma level is 2.8 Sigma.

Quality of Governance at the Communal Level in Poland: an Exploratory Study of the Worst Performer Case From the Opolskie Province

2020 ◽  
Vol 21 (1) ◽  
pp. 22-55
Author(s):  
Bartosz Czepil
Keyword(s):  
Exploratory Study ◽  
Quality Index ◽  
Extreme Case ◽  
Quality Level ◽  
Case Method ◽  
Major Conclusion ◽  
Second Stage ◽  
Quality Of Governance ◽  
Governance Quality

The objective of this paper is an attempt to explain the determinants of the lowest governance quality level in one of the communes of the Opolskie Province, Poland. The first stage of the research consisted in developing a commune-level governance quality index in order to measure the quality of governance in the 60 communes of the Opolskie Province. Subsequently, the commune with the lowest score in the index was qualified for the second stage of the research which was based on the extreme case method. The major conclusion from the research is that the commune leader's governance style which allowed him to hold on to power for many terms of office was responsible for generating low governance quality. Furthermore, the low quality of governance was not only the effect of the governance style but also the strategy aimed at remaining in the commune leader office for many terms.

Qualitative assessment of equipment failure cause finding and removal

2018 ◽  
pp. 116-126
Author(s):  
E. A. Vakulin ◽  
A. I. Zayats ◽  
V. A. Beklemeshev ◽  
V. A. Ivashkevich ◽  
V. A. Khazhiev ◽  
...  
Keyword(s):  
Production Condition ◽  
Real Life ◽  
Open Pit Mine ◽  
Qualitative Assessment ◽  
Open Pit ◽  
Quality Level ◽  
Equipment Failure ◽  
Operation Conditions ◽  
Failure Investigation

Investigation of failures is one of the critical activities of mining and haulage equipment operability assurance in mining. Maintaining failure investigation at the required quality level, it is possible to identify provisions, rules and procedures that should be revised or changed, operation conditions that should be improved, additional personnel training, if required, etc. Investigation of failures in mines is under responsibility of machine men and electricians of maintenance and operation services. In reality, factory management and setup for production condition weak concernment of these workers in quality investigation aimed at finding of sources of equipment failures. This article describes real-life results achieved in development and use of maintenance service operation, technology and management monitoring. The requirements are substantiated for quality improvement in failure cause finding and removal in mining and haulage equipment at Chernogorsky open pit mine, SUEK-Khakassia. Causes of the present quality of failure investigation by machine men of Chernogorsky Repair and Engineering Works and Chernogorsky open pit mine are revealed. The proposed recommended practices will improve quality of mining and haulage equipment failure investigation.

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