Manuscript2 – Page 43 – BUSINESS AND ECONOMICS RESEARCH JOURNAL

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A Mathematical Modeling Approach for Materials Requirements Planning in Remanufacturing

Posted on Wednesday March 15th, 2017Saturday March 18th, 2017 by

Article Information

Journal:	Business and Economics Research Journal
Title of Article:	A Mathematical Modeling Approach for Materials Requirements Planning in Remanufacturing
Author(s):	Rızvan Erol, Gulsun Nakıboglu
Volume:	8
Number:	1
Year:	2017
Page:	101-114
ISSN:	1309-2448
DOI Number:	10.20409/berj.2017126247

Abstract

Remanufacturing has become an ever more important topic due to a growing need for environmental-friendly production strategies and an efficient use of resources. Traditional materials requirements planning (MRP) methods need to be adjusted in line with these new manufacturing environments where both manufacturing and remanufacturing are involved. In this study, a mathematical programming model is formulated for materials requirements planning decision in a multi-product, multi-period remanufacturing system where the assembly of final product is done both through use of parts procured from the disassembly of returned (used) (core) products and by ordering new (unused) parts. The decisions regarding the purchase and disassembly of new parts or used products as part of materials requirements planning are made for the purpose of minimizing the costs. The developed model takes into account, in a deterministic manner, the quality of the product to be disassembled, disposal cost of defective cores, lead time for purchasing new parts, disassembly bill of materials, disassembly capacity and disassembly time of each part. The mathematical model is illustrated through application to a sample problem, and an experimental design is provided in order to identify the ways in which different conditions in a manufacturing environment affect the total cost of the system.

Keywords:

Remanufacturing, Materials Requirements Planning (MRP), Reverse Logistics, Disassembly, Mathematical Modeling

JEL Classification:

C61, M190, Q53

Full Text ( ↓ 2503)

The Role of ERP in Advanced Managerial Accounting Techniques: A Conceptual Framework

Posted on Wednesday March 15th, 2017Saturday March 18th, 2017 by

Article Information

Journal:	Business and Economics Research Journal
Title of Article:	The Role of ERP in Advanced Managerial Accounting Techniques: A Conceptual Framework
Author(s):	Melek Eker, Alp Aytac
Volume:	8
Number:	1
Year:	2017
Page:	83-100
ISSN:	1309-2448
DOI Number:	10.20409/berj.2017126246

Abstract

In the business literature many studies done to shed light how ERP system and advanced managerial accounting techniques team up. For quick and accurate managerial decisions and effective implementation of advanced management techniques, firms need a strong information technology infrastructure. The purpose of this paper is to search theoretically how ERP system and advanced managerial accounting techniques collaborate.

Keywords:

ERP, Advanced Managerial Accounting Techniques, Managerial Accounting Systems

JEL Classification:

M10, M40

Full Text ( ↓ 3026)

Selection and Market Timing Ability of BIST 30 Indexes Funds

Posted on Wednesday March 15th, 2017Saturday March 18th, 2017 by

Article Information

Journal:	Business and Economics Research Journal
Title of Article:	Selection and Market Timing Ability of BIST 30 Indexes Funds
Author(s):	Arzu Sahin
Volume:	8
Number:	1
Year:	2017
Page:	63-81
ISSN:	1309-2448
DOI Number:	10.20409/berj.2017126245

Abstract

The index fund managers, who aim to offer the investor at least as much as the return of the base index, are expected to exhibit selection and timing ability. Based on this expectation the aim of this study is to investigate the selection and timing ability of BIST 30 indexes funds. Therefore, the selection and timing ability of fund managers were tested by applying Treynor-Mazuy, Henriksson-Merton and Jensen-Alpha methods to the daily returns of 7 BIST 30 indexes funds between the time period of January 2005 and December 2015. The analysis findings indicate that none of the 7 funds had statistically significant positive alphas and related timing coefficients so BIST 30 index funds managers did not have selective ability and market timing ability.

Keywords:

Index Mutual Funds, Selection, Timing, Quadratic Regression, Dummy Variable Regression

JEL Classification:

G11, C32

Full Text ( ↓ 2414)

Gini Approach for Determining of Regional Digital Divide in Turkey

Posted on Wednesday March 15th, 2017Saturday March 18th, 2017 by

Article Information

Journal:	Business and Economics Research Journal
Title of Article:	Gini Approach for Determining of Regional Digital Divide in Turkey
Author(s):	Huseyin Fidan
Volume:	8
Number:	1
Year:	2017
Page:	49-62
ISSN:	1309-2448
DOI Number:	10.20409/berj.2017126244

Abstract

Information Technologies that provide many advantages bring some problems depending on the usage differences. Differences that occur between those who can use information technology and who can’t has led to inequalities. The issue that has been referred as digital gap or digital divide has deepened and determining the level of inequality caused gain importance by developments in technology. In determining the level of the digital divide computer and internet are often used as indicators, analysis are conducted with statistical methods based on demographic variables. Gini method which is one of the standard tools for the measurement of inequality, is rarely used in digital divide studies. In Turkey, there are no studies to determine the level of digital divide using the Gini coefficients. In this study, the differences between the computer and internet usage levels of people living in Turkey are defined by the Gini approach. The data to determine of these differences were obtained from computer and internet usage research of Level1 Regions in TUIK Household Survey on Information Technology Usage. In this research, it has been determined the digital divide between regions in computer and internet usage is low relatively. Gini coefficients have been calculated among gender for each region and it has been determined that TR9 has the highest and TR11 has the lowest level of the digital divide.

Keywords:

Information Systems, Inequalities, Digital Divide, Digital Gap, Gini Coefficients

JEL Classification:

D63, O33

Full Text ( ↓ 2263)

Stability of Money Demand Function in Turkey

Posted on Wednesday March 15th, 2017Saturday March 18th, 2017 by

Article Information

Journal:	Business and Economics Research Journal
Title of Article:	Stability of Money Demand Function in Turkey
Author(s):	Oguz Tumturk
Volume:	8
Number:	1
Year:	2017
Page:	35-48
ISSN:	1309-2448
DOI Number:	10.20409/berj.2017126243

Abstract

The purpose of this study is to investigate the money demand function and its stability in Turkey using annual data over the period of 1970 and 2013. Based on the three specifications of money demand function, cointegration and the dynamic regression estimation results reveal that more flexible version of money demand specification that links the log of real money balances, ln M/P, to the log of real GDP, ln Y/P, and the log of the nominal interest rate, lni, performs better than the money demand specifications assuming unitary income elasticities. Moreover, based on the stability test on the flexible specification of money demand, the narrow monetary aggregate M1 is found to be stable.

Keywords:

Money Demand, Income and Interest Elasticities, Stability, Dynamic OLS

JEL Classification:

E41, E52

Full Text ( ↓ 3046)

The Causality Link Between Electricity Consumption and Economic Growth in Turkey: Evidence from ARDL Bounds Testing Procedure

Posted on Tuesday March 14th, 2017Saturday March 18th, 2017 by

Article Information

Journal:	Business and Economics Research Journal
Title of Article:	The Causality Link Between Electricity Consumption and Economic Growth in Turkey: Evidence from ARDL Bounds Testing Procedure
Author(s):	Ugur Korkut Pata, Harun Terzi
Volume:	8
Number:	1
Year:	2017
Page:	19-33
ISSN:	1309-2448
DOI Number:	10.20409/berj.2017126242

Abstract

Electricity consumption is regarded as an indicator of welfare in both developing and developed countries. In this study, the causality link between net electricity consumption and economic growth in the Turkish economy is investigated by the 55 annual observations covering the period from 1960 to 2014. According to the results of UVAR and ARDL analysis resolved with both AIC and SIC information criteria, there is a positive unidirectional and statistically significant causality moving from net electricity consumption to economic growth in the short/long run. The empirical results indicate that the energy led-growth hypothesis is valid for Turkey, that is growing net electricity consumption positively stimulates the economic growth in the short/long run.

Keywords:

Electricity Consumption, Economic Growth, ARDL, Bounds Test, Turkey

JEL Classification:

C22, Q43, Q48

Full Text ( ↓ 2358)

Total Factor Productivity and Efficiency in OECD Countries: Possibility of Convergence in 2000-2012 Period

Posted on Tuesday March 14th, 2017Saturday March 18th, 2017 by

Article Information

Journal:	Business and Economics Research Journal
Title of Article:	Total Factor Productivity and Efficiency in OECD Countries: Possibility of Convergence in 2000-2012 Period
Author(s):	Aziz Kutlar, Ali Kabasakal, Ahmet Gulmez
Volume:	8
Number:	1
Year:	2017
Page:	1-18
ISSN:	1309-2448
DOI Number:	10.20409/berj.2017126241

Abstract

This study discusses efficiency, productivity, and the existence of convergence in 34 OECD countries between 2000 and 2012. Physical capital per worker and human capital per worker are used as inputs to determine total factor productivity and efficiency scores in data envelopment analysis while GDP per worker is used as the output. Efficiency scores observed in CCR and BCC models indicate that Latin American and Eastern European countries are more efficient. Analysis of productivity by using the Malmquist Index indicates that productivity was positive but increased less than 1 percent at the end of the period. Panel regression estimation is used for standard deviations of convergence and to determine beta convergence. If GDP per worker is (yi), there is convergence between log(yi/yi,t-T,) and starting values log(yi,t-T); however, the convergence effect of TFP values could not be determined. Similar results are reported for Sigma convergence.

Keywords:

Panel data, Malmquist Index, TFP, OECD countries, Convergence

JEL Classification:

C23, C43, D24, O47

Full Text ( ↓ 2813)

The Role of Accounting and Marketıng in Calculating Customer Lifetime Value on Key Account Management in B2B/Industrial Markets

Posted on Friday October 21st, 2016Wednesday October 26th, 2016 by

Article Information

Journal:	Business and Economics Research Journal
Title of Article:	The Role of Accounting and Marketıng in Calculating Customer Lifetime Value on Key Account Management in B2B/Industrial Markets
Author(s):	Vedat Ekergil, Nezihe Figen Ersoy
Volume:	7
Number:	4
Year:	2016
Page:	159-180
ISSN:	1309-2448
DOI Number:	10.20409/berj.2016422345

Abstract

Customer lifetime value is a concept which many academics and in practice many marketing managers are working on for a long time. The main objective of the customer lifetime value is to determine the degree of importance of customers for the company. Answers of questions such as; how much the company should invest to which customer, what kind of marketing strategies should it prefer for which customer and which campaigns should it organize; can be determine by calculating the customer lifetime value. Many academics have proposed several models for the calculation of Customer lifetime value. But there is not any judgement in the literature about which types of models provide superior results. The purpose of this study is to create a cluster between customers with examining some of the models deemed suitable for the selected sector in the literature, result of the calculations, using the same database and variables.

Keywords:

Customer, Customer Lifetime Value, Key Account, Accounting of Marketing, Segmentation

JEL Classification:

M31, M40, M41

Full Text ( ↓ 2628)

Impact of New Standard “IFRS 16 Leases” on Statement of Financial Position and Key Ratios: A Case Study on an Airline Company in Turkey

Posted on Friday October 21st, 2016Wednesday October 26th, 2016 by

Article Information

Journal:	Business and Economics Research Journal
Title of Article:	Impact of New Standard “IFRS 16 Leases” on Statement of Financial Position and Key Ratios: A Case Study on an Airline Company in Turkey
Author(s):	Meryem Öztürk, Murat Serçemeli
Volume:	7
Number:	4
Year:	2016
Page:	143-157
ISSN:	1309-2448
DOI Number:	10.20409/berj.2016422344

Abstract

The studies regarding the changes made related to the accounting for lease have taken its final status with the publication of IFRS16 Lease Standard as a result of a long time and effort in January 2016. The related Standard shall ensure (1) the reporting of all the leases in the same way, (2) the displaying of the unrecorded leases in the financial statements and therefore, (3) the submission of more transparent, correct and comparable information. The purpose of our study is to examine the statement of financial position of the lessee enterprise after the transition to the new financial reporting standard IFRS 16 and the impacts of the change in the basic ratios. For this purpose, the impacts possible to occur in the financial position of an airline company having activities in Turkey as a result of the application of the related standard have been examined. The results of the study show that the reflection of the operating leases on the balance sheet shall cause to significant increases in the assets and liabilities and for this reason; there shall be a significant increase in the ratio of liability/asset and a significant decrease return on asset.

Keywords:

IFRS16, IAS 17, Operating Leases, Financial Leases, Off Balance Sheet Financing

JEL Classification:

M40, M41, M48

Full Text ( ↓ 7200)

The Effects of Interactions between Management Control Systems and Strategy on Firm Performance: An Empirical Study

Posted on Friday October 21st, 2016Wednesday October 26th, 2016 by

Article Information

Journal:	Business and Economics Research Journal
Title of Article:	The Effects of Interactions between Management Control Systems and Strategy on Firm Performance: An Empirical Study
Author(s):	Melek Eker, Semih Eker
Volume:	7
Number:	4
Year:	2016
Page:	123-141
ISSN:	1309-2448
DOI Number:	10.20409/berj.2016422343

Abstract

In recent years, there has been growing interest in examining the relationships among management control systems, business strategy and firm performance. In this study, the interactions of management control systems and strategy with their impact on firm performance are examined with an empirical analysis, based on the data from 94 manufacturing firms from the top 500 in Turkey in 2014. The results support the postulate that high interaction between interactive control system (ICS) and differentiation strategy (DS) is associated with high firm performance and that high interaction between diagnostic control system (DCS) and cost leadership strategy (CS) is associated with high firm performance.

Keywords:

Business Strategy, Diagnostic Control System, Interactive Control System, Financial Performance, Non-Financial Performance, General Firm Performance

JEL Classification:

M10, M40

Full Text ( ↓ 4001)