İşletme Bölümü Yayın Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12416/403

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Quality Cost Modeling Process for Production Systems
(1) Şentarlı, İnci; İşletme
Personeli Güçlendirme
(2003) Yüksel, Öznur; Erkutlu, Hakan
Citation - Scopus: 10
Effectiveness of SMEs in Turkish economy and agricultural industry sector
(2004) Baykal, N.A.; Gunes, E.
The latest developments and modulations in Turkish economy, adaptation process to European Union and entering into international markets, risks and uncertainties in these markets and some opportunities may affect SMEs in positive and negative aspects. In fact, new areas may open and some business sectors may slowly disappear. As part of the adaptation process with EU, SMEs deserve important order on the agenda while trying to enter international markets but are left to their fate in Turkey. In this article, the existing situations, problems and contributions of SMEs in industrial and agricultural sector to Turkish economy will be analysed, then policies that must be put in practice for more contribution to Turkish economy will be dwelt upon. Finally, solutions to these situations will be proposed. © 2004 Inderscience Enterprises Ltd.
Türkiye''de Kırsal Alanda Yoksulluğun Azaltılmasında Hayvancılığın Ve Hayvansal Ürün İşleyen Kobilerin Rolü
(2004) Gülçubuk, Bülent; Aluftekin, Nilay
1980’li yıllardan sonra uygulanan ekonomi politikalarından hayvancılık önemli ölçüde etkilenmiştir. Politikalar özellikle küçükbaş hayvancılık ile uğraşanları etkilemiştir. Çünkü, bunlar Türkiye’nin çoğunlukla az gelişmiş veya geri kalmış yörelerinde yaşamakta olup, alternatif gelir kaynakları da oldukça sınırlıdır. Küçükbaş hayvancılıkla uğraşanlar tarım kesiminin en dağınık ve örgütsüz grubunu oluşturmaktadır. Bu grup, ekonomik ve toplumsal değişim süreçleri sonunda giderek daha da yoksullaşmaktadır. Türkiye’de başta küçükbaş olmak üzere hayvan sayılarındaki sürekli azalışlar da bunu doğrulamaktadır. Nitekim, 1980-2001 yılları arasında koyun sayısında %44.5, kıl keçisi sayısında %56.1, tiftik keçisi sayısında %90.4 ve sığır sayısında %33.6 oranında azalma olmuştur. Sonuçta, önemli bir nüfus grubu giderek yoksullaşmakta veya kentlere göç ederek yeni yaşam maceralarına sürüklenmektedir.Türkiye’de küçükbaş hayvan varlığının en fazla olduğu Doğu Anadolu Bölgesi ile Güneydoğu Anadolu Bölgelerinde “yoksul birey oranı” sırasıyla %25.0 ve %24.0’dür. Kırsal ekonomik yapının önemli bir parçası durumunda olan hayvancılık sektörü, özellikle bu sektörü meydana getiren işletmelerin ölçekleri, yapıları, üretim süreçleri ve kuruluş yerleri açısından kendi bünyelerinde bir çok farklılıklar göstermektedir. Avrupa Birliği’ne girme çabasında olan Türkiye’de, hayvancılık sektöründe faaliyet gösteren küçük ve orta ölçekli işletmelerin (KOBİ) daha aktif, verimli ve üretken hale gelmesi kırsal kalkınma ve özellikle de yoksulluğun azaltılması açısından önem taşımaktadır.Bu makalede, yoksulluğun tanımı, nitelikleri ve bölgesel görünümü kısaca verildikten sonra kırsal alanda yoksulluk konusu ele alınmış ve kırsal alanda yoksulluğun azaltılmasında hayvancılığın ve hayvansal ürün işleyen KOBİ’lerin rolü tartışılmıştır. Ayrıca, kırsal alanda yoksulluğun azaltılması için hayvancılık politikaları konusunda stratejiler geliştirilmiştir.
Geçmişten Günümüze Gıda Yardımları ve Ülkelerin İzledikleri Yardım Politikaları
(2005) Sakarya, Arif Orçun; 19342; İşletme
Çalışma beş bölümden oluşmaktadır. İlkbölümde, ülkelerin ve uluslararası kuruluşlarıngeçmişten günümüze izlemiş olduğu gıda yardımıpolitikaları ve yapmış oldukları gıda yardımlarıincelenmiştir. Bu ülkelerde başlatılan gıdayardımı programlarının kapsamı, günümüzekadar farklılıklar göstermiştir. İkinci bölümde,gıda yardımlarının amaçları ve günümüzde gıdaaçığı durumunu etkileyen nedenlere değinilmiştir.Gıda yardım ları, insancıl amaçlar, çıkaramaçları ve ülkelerin karşılaştıkları savaş, doğalafetler gibi olağanüstü durumlarda verilmiştir.Bunun yanında, yardım faaliyetlerinin etkinliğinin sağlanması ve yardım akışının düzenlenmesi için uluslararası kurumlar oluşturulmuş,anlaşmalar yapılmıştır. Bu kuruluşların rolü iseüçüncü kısımda incelenmiştir. Dördüncübölümde, ülke bazında izlenen yardım politikaları sorgulanmıştır. Bu politikaların genelamacı, yardımı alan ülkede kalkınmayı sağlamasıve üretkenliği artırmasıdır. Çalışmanın sonbölümünde Türkiye'nin gıda güvencesi politikasıüzerinde durulm uş ve gıda güvencesiningüçlendirilmesine yönelik olası çözüm önerilerinde bulunulmuştur. Bunun yanında,Türkiye'nin almış ve vermiş olduğu gıda yardımları çalışmaya yansıtılmıştır.
Citation - WoS: 9
Citation - Scopus: 15
Stock returns and volatility: empirical evidence from fourteen countries
(Routledge Journals, Taylor & Francis Ltd, 2005) Balaban, E; Bayar, A
This is a pioneering effort to test in 14 countries the relationship between stock market returns and their forecast volatility derived from the symmetric and asymmetric conditional heteroscedasticity models. Both weekly and monthly returns and their volatility are investigated. An out-of-sample testing methodology is employed using volatility forecasts instead of investigating the relation between stock returns and their in-sample volatility estimates. Expected volatility is derived from the ARCH(p), GARCH(1, 1), GJR-GARCH(1, 1) and EGARCH(1, 1) forecast models. Expected volatility is found to have a significant negative or positive effect on country returns in a few cases. Unexpected volatility has a negative effect on weekly stock returns in six to seven countries and on monthly returns in nine to eleven countries depending on the volatility forecasting model. However, it has a positive effect on weekly and monthly returns in none of the countries investigated. It is concluded that the return variance may not be an appropriate measure of risk.
Citation - Scopus: 7
Liquidity and price volatility of cross-listed French stocks
(2005) Bayar, A.; Önder, Z.
The changes in the volatility and liquidity of French stocks are examined before and after their cross-listing on the German electronic market, the Xetra. The results are mixed in terms of the change in liquidity and volatility of stocks after cross-listing. It is found that for many stocks volatility of stock prices increases and liquidity declines after cross-listing. Furthermore, similar results are obtained when market volatility in the Paris Bourse is controlled for. These results suggest the migration of orders to the Xetra and the deterioration of the quality of the Paris Bourse with the cross listing of French stocks on the German market, especially for those stocks that are continuously traded on the Xetra. These results seem to be against the integration of the French and German markets during the period analysed in this study. Furthermore, the findings indicate that the trading scheme and the characteristics of the stock should be considered in examining the cross-listing effects. © 2005 Taylor & Francis.
The Family Purchasing Decision: A Field Study On Monthly Grocery Expenses Of Turkish Families In Ankara, Turkey
(2005) Özsaçmacı, Bülent; Özdemir, Handan; Özdemir, Handan; 120408; 19729; Uluslararası Ticaret ve Finansman; Halkla İlişkiler ve Reklamcılık
It is crucial for companies to find out relevant information about the purchasing agents within families since they play a great role in the shaping of marketing, sales and promotion strategies of a company. This article consists of two parts. In the theoretical part, information about consumer buying behavior and purchasing decisions of families, turkish in particular, is presented. In the applications part of the study, surveys are conducted to married couples living in 10 different districts in Ankara, Turkey to determine the purchasing agents for the monthly grocery expenses of these families. This article will provide turkish and foreign companies the opportunity to understand their target markets better and carry out specific market research and promotional activities aimed at them. In addition, these companies will be in a better position to predict how their consumers will respond to marketing strategies.
Brand Loyalty İn The Cosmetics Industry: A Field Study On Turkish Women‟s Brand Loyalty Among Cosmetics Products
(2005) Özdemir, Handan; Özdemir, Handan; Parıltı, Nurettin; 120408; 116684; Halkla İlişkiler ve Reklamcılık
Cosmetics industry has a share of 135 billion dollars in the global market. The biggest multinational cosmetics companies in the world such as Avon, Procter and Gamble, Estee Lauder, Nivea, L’oreal are very much interested in the Turkish market. Turkey is a developing country in terms of cosmetics consumption and has a great potential with a population of 70 million. This study aims to determine whether turkish women have brand loyalty among skin-care products in the cosmetics sector. It is our hope that the results of this study will help foreign and domestic cosmetics companies, already existing in or planning to enter the Turkish market, in shaping their marketing strategies.
Fama-French üç faktör varlık fiyatlama modelinin İMKB’de uygulanması
(2006) Doğanay, M. Mete; 112010
Citation - WoS: 2
Citation - Scopus: 9
Predicting Financial Failure Of The Turkish Banks
(World Scientific Publ Co Pte Ltd, 2006) Doganay, M. Mete; Ceylan, Nildag Basak; Aktas, Ramazan; 112010
Banks are the most important financial institutions in Turkey because other financial institutions are not developed efficiently yet. Turkish banks experienced financial difficulties and a substantial amount of banks failed in the past. This event urged the government to initiate measures to prevent banks from getting into financial difficulties. As a result of these measures, Turkish banking system currently seems to be very attractive for the foreign investors willing to invest in this sector. One of the main concerns of the foreign investors is a possibility of a new banking crisis although it is very remote at this time. The purpose of this study is to develop early warning systems predicting the financial failure at least three years ahead of financial date. A number of multivariate statistical models such as multiple regression, discriminant analysis, logit, probit are used. We found that the most appropriate model is logit. The significant variables obtained from the models explain very well the causes of the bank failures. Our models can be used to assist interested parties to predict the probability of financial failure of Turkish banks.
Hisse senetlerinde risk ayrışımı ve İstanbul Menkul Kıymetler Borsası’nda bir uygulama
(2006) Doğanay, M. Mete; Aktaş, Ramazan; Ban, Ünsal; 112010
Bu çalışmada İMKB’de işlem gören hisse senetlerinin toplam riskleri, 1997-2004 dönemi esas alınarak piyasa riski, endüstri riski ve firma riski bileşenlerine ayrılmıştır. Toplam risk içinde piyasa riskinin ağırlığı kriz dönemlerinde artmakta, istikrar dönemlerinde azalmakta, firma riskinin ağırlığı ise kriz dönemlerinde azalmakta, istikrar dönemlerinde artmaktadır. Yapılan analizlerde toplam risk içindeki en ağırlıklı bileşenin tüm dönemlerde firma riski olduğu belirlenmiştir. Bu durum, sistematik olmayan riski ortadan kaldırmak için, finans yazınında tavsiye edildiği gibi iyi çeşitlendirilmiş bir portföy oluşturmanın oldukça zor olduğunu ortaya koymaktadır. Çalışmada ortaya çıkan diğer bir sonuç ise, toplam riski içinde firma riskinin ağırlığı yüksek olan hisse senetlerinin getirilerinin de yüksek olduğudur. Bu durum, yatırımcıların sistematik olmayan riski almalarından dolayı da ödüllendirildiklerini göstermektedir.
Citation - Scopus: 21
Forecasting stock market volatility: Further international evidence
(2006) Balaban, E.; Bayar, A.; Faff, R.W.
This paper evaluates the out-of-sample forecasting accuracy of eleven models for monthly volatility in fifteen stock markets. Volatility is defined as within-month standard deviation of continuously compounded daily returns on the stock market index of each country for the ten-year period 1988 to 1997. The first half of the sample is retained for the estimation of parameters while the second half is for the forecast period. The following models are employed: a random walk model, a historical mean model, moving average models, weighted moving average models, exponentially weighted moving average models, an exponential smoothing model, a regression model, an ARCH model, a GARCH model, a GJR-GARCH model, and an EGARCH model. First, standard (symmetric) loss functions are used to evaluate the performance of the competing models: mean absolute error, root mean squared error, and mean absolute percentage error. According to all of these standard loss functions, the exponential smoothing model provides superior forecasts of volatility. On the other hand, ARCH-based models generally prove to be the worst forecasting models. Asymmetric loss functions are employed to penalize under-/over-prediction. When under-predictions are penalized more heavily, ARCH-type models provide the best forecasts while the random walk is worst. However, when over-predictions of volatility are penalized more heavily, the exponential smoothing model performs best while the ARCH-type models are now universally found to be inferior forecasters.
Citation - WoS: 16
Citation - Scopus: 13
Wavelet transform and artificial neutral network for the quantitative resolution of ternary mixtures
(Revista Chimie Srl, 2006) Dinc, Erdal; Baleanu, Dumitru; Baleanu, Dumitru; Tas, Aysegul; 56389; 29252; Matematik
Two different approaches continuous wavelet transform (CWT) and artificial neural network (ANN) were successfully applied to the quantitative resolution of ternary mixtures of paracetamol (PAR), metamizol (MET) and caffeine (CA) having strongly overlapping spectra. First approach is based on the use of CWT signals of the ratio spectra of three active compounds in samples. Various CWT families were tested for the extraction of cardinal information and small noise condition and higher peaks of the original spectra. In this paper, three methods: Mexican hat function (MEX) (a = 70), reverse biorthogonal (RBIO3.5) (a = 100) and biorthogonal (BIOR2.4) (a = 90) were found suitable for determination of three active compounds and their signal analysis. ANN, as a multivariate numerical method, was used for the quantitative resolution of the same ternary mixtures. The performance of CWT and ANN approaches was validated by analyzing the synthetic mixtures of PAR, MET and CA compounds. In addition, the standard addition technique was also used for the same purpose. The experimental results provided by CWT technique were compared with each other and those obtained by ANN method and a coincidence was observed for all the obtained results.
Öz yazma: süreç ve ilkeleri
(2006) Dener, Hasan Işın; Yıldızeli, Aytaç; İşletme
Towards Predicting Financial Information Manipulation
(2007) Doğanay, Mehmet Mete; Alp, Ali; Doğanay, Mehmet Mete; 112010; İşletme
Manipulation is one of the important issues in securities markets because manipulative actions send false signals to the investors and make them buy or sell securities they otherwise would not buy or sell. There are different types of manipulations that can deceive investors. One type of manipulation is financial information manipulation. Manipulators, who use this type of manipulation, distort information in the financial statements in order to give false information about the prospects of the issuing firms. This paper attempts to predict financial information manipulation by using the multivariate statistical techniques and neural networks. A number of financial ratios are used as explanatory variables. The multivariate statistical techniques used are discriminant analysis, logistics regression (logit), and probit. Unlike other studies, the present study takes multicollinearity between financial ratios into account and conclude that the estimated multivariate statistical models rather than the neural networks can be used as early warning systems to detect possible financial information manipulations.
A new classifier design with fuzzy functions
(Springer-Verlag Berlin, 2007) Celikyılmaz, Aslı; Türkşen, I. Burhan; Aktaş, Ramazan; Doğanay, M. Mete; Ceylan, N. Başak; 112010
This paper presents a new fuzzy classifier design, which constructs one classifier for each fuzzy partition of a given system. The new approach, namely Fuzzy Classifier Functions (FCF), is an adaptation of our generic design on Fuzzy Functions to classification problems. This approach couples any fuzzy clustering algorithm with any classification method, in a unique way. The presented model derives fuzzy functions (rules) from data to classify patterns into number of classes. Fuzzy c-means clustering is used to capture hidden fuzzy patterns and a linear or a non-linear classifier function is used to build one classifier model for each pattern identified. The performance of each classifier is enhanced by using corresponding membership values of the data vectors as additional input variables. FCF is proposed as an alternate representation and reasoning schema to fuzzy rule base classifiers. The proposed method is evaluated by the comparison of experiments with the standard classifier methods using cross validation on test patterns.
How to Manage the Mortgage Credit Risk in Turkey? Can Dual-indexed Mortgages be a Remedy?
(2007) Alp, Ali; 112010
A market-oriented housing finance system has been under discussion in Turkey recently. In this article we analyze different types of mortgages that have been used in developed and developing countries to select the one that is most appropriate for Turkey-one which minimizes risks for both lenders and borrowers. Each type of mortgage presents different risks to borrowers and lenders. After taking into consideration the economic history of Turkey, we conclude that the most appropriate mortgage for Turkey that minimizes risk is the dual-indexed mortgage model. We test this model by using data from the most volatile period of the Turkish economy, applying historical simulation and Monte-Carlo simulation. We find that, using this model; the total loan is paid off in a reasonable period without causing substantial difficulty for lenders and borrowers. Analyses confirm that borrowers and lenders are exposed to minimum risk if this type of mortgage is originated in Turkey.
Kavramsal Dizin Yapısı ve Oluşturulması Üzerine
(2007) Dener, Hasan Işın; İşletme
Citation - Scopus: 2
Advertising Ethics: A Field Study On Turkish Consumers
(2007) Ergin, E.A.; Ozdemir, H.; 120408
This study examines whether use of deception in ads, cultural stereotyping, sexual stereotyping, and emotional exploitation factors have an influence on the Turkish consumers. Specifically, the aim is to discover whether each of these four factors have any impact on the consumers ' recall of the ad and subsequent purchasing decisions. The results of this study should help foreign and domestic advertising agencies and their clients, already existing in or planning to enter the Turkish market, in understanding the Turkish consumers better.

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