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Investors’ Expectations, Price-Dividend Dependence and P/E Ratio for Common Stock: Specifics of Well-Developed Markets and Emerging Markets

Investors’ Expectations, Price-Dividend Dependence and P/E Ratio for Common Stock: Specifics of Well-Developed Markets and Emerging Markets

Author(s): Sergey Petrov,Nadezhda Yashina,Oksana Kashina,Natalia N. PRONCHATOVA-RUBTSOVA / Language(s): English Publication Year: 0

It is well known that a role of dividend payments as a criterion for the effectiveness of portfolio investments increases with the rise in their time horizon. The comparison of share price performance and dividend payments in more than a hundredyear retrospective had allowed to find out the phenomenon of anomalous volatility for stock prices. The result had a powerful influence on the concept of risky asset evaluation. The authors of the paper proposed to study time series of stock prices and dividend payments in a somewhat different frame of reference. The aim of the paper is to examine investors’ perception of growth prospects for equities based on the investigation of share price dynamics compared to annual dividend payments. The proposed theoretical model uses an original procedure of continuously growing dividend discounting with arbitrary investment period. The research deals, but not limited to, with the shares of American and Russian corporations from 1985 till 2016. The central issue of the research is to compare the observed price-dividend dependence for the share with the one corresponding to classical dividend discount model assuming that the growth of dividend is uniform and the period of investment is infinite. The result of the analysis carried out is that both in well-developed and in emerging markets authors' technique allows to gain an insight (for many securities) into the primary motive for “representative shareholder” to evaluate a security: is it an income from share price growth or a willingness to receive stock dividends. Similar diagnostics is of undoubted interest for portfolio management; it is more exact for developed markets that have longer history and are less volatile. We show in the paper that the proposed method makes it possible to define the concept of earnings shares and growth shares more concretely.

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Evaluation of Expense Ratio of Insurance Portfolios Belonging to Selected Insurance Companies Operating on Czech Insurance Market

Evaluation of Expense Ratio of Insurance Portfolios Belonging to Selected Insurance Companies Operating on Czech Insurance Market

Author(s): Lenka Přečková,Eva Vávrová / Language(s): English Publication Year: 0

The paper focuses on evaluation of insurance portfolios belonging to the insurance companies ČSOB and Komerční pojišťovna from the vantage point of growth rate of premium written and expense ratio of the insurance portfolio. The aim of this paper is to ascertain whether the selected insurance companies experience lower expense ratio of their insurance portfolio than what is the average expense ratio of insurance portfolios on the Czech insurance market. The reason for doing this research is in the fact that the insurance companies ČSOB and Komeční pojišťovna are entities with a developed bancassurance model. As the authors discovered in their earlier research, insurance companies using this model experience lower expense ratio. This paper analyzes the selected insurance companies on Czech insurance market considering the cooperation between the bank and insurance company. It analyzes the volume of premium written concluded through the distributional channel of bancassurance, and eventually compares expense ratios of the selected insurance companies with the average value on Czech insurance market between 2012 and 2016. Expense ratio of life insurance in both insurance companies shows lower values than the average value on the Czech insurance market. The same applies to total insurance. The research confirms that Komerční pojišťovna shows lower average value of expense ratio than ČSOB pojišťovna.

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Preliminary Results of Non-bank Consumer Credit Providers in the Professional Qualifications Test by the Act No. 257/2016 Coll., on Consumer Credit

Preliminary Results of Non-bank Consumer Credit Providers in the Professional Qualifications Test by the Act No. 257/2016 Coll., on Consumer Credit

Author(s): Ivan Soukal,Eva Hamplova / Language(s): English Publication Year: 0

The new Act No. 257/2016 Coll., on consumer credit states obligatory duty for consumer credit providers and intermediaries to ensure and prove the professional qualification level of all employees involved in the provision and intermediation of a consumer credit. Qualification can be proven by the Act No. 257/2016 Coll only at accredited institutions. Such institutions provide a testing based on questions prepared by the market regulator and supervisor – the Czech national bank. No one is allowed to provide or intermediate a consumer credit without a successful test pass at an accredited institution. We analyzed the test results of 287 employees of two medium-sized non-bank financial institutions who took the final qualification test at an accredited institution. The goal is to present the test results so far and to find whether gender and age are factors of the test score. We set four main and three auxiliary hypotheses regarding an effect of gender and age variable on the test performance. We find that neither of the variables is a factor. Although some level of variance is present in a more detailed analysis, it is not statistically significant. Therefore, we claim that regarding the test by the act no. 257/2016 Coll. on Consumer Credit the results are independent of age or gender of an employee. Our result was unexpected concerning the age variable. In a discussion, we explain that results might be biased by “early-takers” employees. Therefore, we expect an increase in test results variance and change in the test result distribution skewness in a future as more regular employees will participate.

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Copulas and Credit Risk Models

Copulas and Credit Risk Models

Author(s): Yuan Tian / Language(s): English Publication Year: 0

The topic of this paper is copulas and credit risk models. Generally, there is a core implicit assumption of credit risk models that the critical variables are normally distributed, which is too simplified in the reality. There is no compelling reason for choosing the normal distribution. Therefore, the goal of this paper is to find out the real distributions based on the concept of copulas and then better quantify the credit risk. There is a portfolio that consists of ten bonds issued by quoted companies in the Frankfurt Stock Exchange (FSE) with a 10-million-euro total nominal value over one year, from January 9th, 2017 to January 8th, 2018. The credit risk of the portfolio is quantified under the framework of the CreditMetrics™ model, a typical industry example of the threshold models. Two main types of copulas include elliptical copulas and Archimedean copulas. The parameters of a parametric copula are estimated by MLE and then the copula is selected by computing AIC and BIC. Compared with the original CreditMetrics™ model with an assumption of normal distribution, the probability density curve obtained based on copulas are more right-tailed and the credit risk of the portfolio is better quantified.

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Hurst Exponent and the Efficiency of the Czech Electricity Market

Hurst Exponent and the Efficiency of the Czech Electricity Market

Author(s): Juraj Čurpek,Jitka Veselá / Language(s): English Publication Year: 0

Efficient Market Hypothesis (EMH) assumes a random, independent movement of the investment instrument prices. EMH validity testing, especially on stock and currency markets, did not bring clear results. Part of the research conducted so far confirms the validity of EMH, part of the research refutes the validity of EMH. This paper focuses on commodity market efficiency testing, specifically on the electricity market in Czechia (Czech electricity and gas market operator OTE) using a time-varying Hurst exponent estimated by the Detrended Fluctuation Analysis in period 2016-2018 applied on the returns of transformed hourly intra-day electricity prices. Since the value of 0.5 for the Hurst exponent is associated with the random process, and thus with the weak form of EMH, its value can indicate whether the studied market is efficient or not. To conduct our research, we computed the Hurst exponents in the subsamples that slid along the full sample, which is called the sliding-window technique, and thereby we were able to get a view of temporal behavior of the Hurst exponent. First, our results showed the so-called multi-scale nature of the returns of transformed electricity prices, i.e. we detected two Hurst exponents on different time scales separated by the crossover. Secondly, the Hurst exponent temporal behavior, calculated on the smaller time scale, revealed the short periods when the studied market approached the weak-form efficiency. On the other hand, for the larger time scale, the Hurst exponents attained values associated with the mean-reverting process and not the random one, and thus in that case the short-term electricity market in Czechia was inefficient with respect to the weak form of EMH.

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Information Asymmetry in Insurance Market

Information Asymmetry in Insurance Market

Author(s): Michaela Florianová / Language(s): English Publication Year: 0

Does information asymmetry exist in the insurance market? Does it impact the market equilibrium? These are current topics of the research dealing with economic and insurance issues. Many publications have been published over the last century, confirming or refuting the existence of information asymmetry in the non-life insurance market same as in the life insurance market. The aim of this article is to introduce the topic of information asymmetry, including the supply and demand point of view and dividing the asymmetry on adverse selection and moral hazard. The main goal of this paper is to review and compare the results of existing publications and papers dealing with information asymmetry in the insurance market, with focus on differences between life and non-life insurance research results, and open the door for further discussions on this issue.

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Investing in Emerging Markets: Contrasted Mean and Median Models in Egyptian Stock Markets

Investing in Emerging Markets: Contrasted Mean and Median Models in Egyptian Stock Markets

Author(s): Mai A. Ibrahim,Mohammed El-Beltagy,Motaz Khorshid / Language(s): English Publication Year: 0

Emerging Markets return distributions have shown significance departure from normality were they are characterized by fatter tails relative to the normal distribution and exhibit levels of skewness and kurtosis that constitute a significant departure from normality. Therefore the classical Markowitz Mean-Variance is not the most suitable portfolio optimization model to apply for emerging markets since it assumes normally distributed returns and a quadratic utility function. Alternative models were suggested in the literature, higher moments models have been introduced to account for the insufficiency of the description of a portfolio by only its first two moments while the median model has been introduced as a robust statistic which is less affected by outliers than the mean. Alternative risk measures have been introduced instead of variance to capture the effect of risk. The purpose of this paper is to investigate the performance of different portfolio models in an emerging market such as the Egyptian Market to decide which can suit better the characteristics of this market. Higher moment models including Mean-Variance-Skewness and Mean-Variance-Skewness-Kurtosis and median models including Median Value-at-Risk and Median Mean-Absolute-Deviation are compared to the Markowitz model. The formulation of the models varied between single-objective nonlinear programming problems (NLP), single-objective mixed-integer linear programming (MILP) problems and single-objective quadratic programming problems. All the models are tested on real financial data in the Egyptian main Index EGX30. In general, median models have shown better performance than higher moments models and specifically the MedianVaR model. The MedianVaR model has provided the higher final wealth for the investor over the entire period of study. These findings can guide the decision making process for portfolio optimization in the Egyptian market were one can barely find any study on the portfolio optimization problem for the Egyptian Market in specific and the MENA region in general.

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Analysis of Financial Market Using Soft Computing Techniques

Analysis of Financial Market Using Soft Computing Techniques

Author(s): Zuzana Janková,Petr Dostál / Language(s): English Publication Year: 0

Soft computing is part of artificial intelligence containing fuzzy logic and artificial neural networks. Soft computing based systems are able to extract relevant information from large data sets by discovering hidden patterns in the data. The combination of these two techniques can provide an intelligent system with more ability and flexibility. Financial markets are becoming increasingly complex and demanding to predict stock price movements due to their non-linear and dynamic nature. The present study combines fuzzy c-means clustering and a neural network to support investment decisions in the ETF in the US stock market. The proposed model is designed to help investors identify profitable opportunities in stock markets.

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Do European Investors React to Extreme Oil Prices? Evidence from Granger Causality in Tails Test

Do European Investors React to Extreme Oil Prices? Evidence from Granger Causality in Tails Test

Author(s): Blanka Łęt / Language(s): English Publication Year: 0

In this paper we analyze relationship between selected European stock markets and crude oil market. The aim of our analysis is to check whether stock market participants react to extreme changes in oil price. Specifically, we verify whether there is contemporaneous and delayed Granger causality between occurrence of the extreme negative or positive returns on the crude oil market and main European stock markets. We use daily Brent futures prices and stock indices from Belgium, France, Germany, Greece, Italy, Netherlands, Norway, Poland, Spain, Sweden and United Kingdom. We implement Candelon and Tokpavi (2016) testing procedure. Our results show that in the analyzed period in most cases the symmetrical contemporaneous causality was dominant, i.e. extreme negative or positive returns on the oil market and stock markets occurred on the same day and had the same direction. Results of Granger delayed causality test show that more long-lasting reaction occurred as a result to the negative news from the oil market.

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RIPPLE – СЪЩНОСТЕН ПРОФИЛ НА КРИПТОВАЛУТАТА

RIPPLE – СЪЩНОСТЕН ПРОФИЛ НА КРИПТОВАЛУТАТА

Author(s): Mariya Yaneva / Language(s): Bulgarian Publication Year: 0

The purpose of the development is to analyze the reasons that classify Ripple as one of the most attractive currencies for economic entities, systematizing its advantages.

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Momentum Yatırım Stratejileri Ve Getiri İlişkisi: Bist30 Endeksi Üzerine Bir Uygulama

Momentum Yatırım Stratejileri Ve Getiri İlişkisi: Bist30 Endeksi Üzerine Bir Uygulama

Author(s): Turhan Korkmaz,Tuğba Nur / Language(s): Turkish Publication Year: 0

Finansal piyasalara olan bilgi akışının pay senetleri üzerindeki etkisi birçok çalışmanın odaklandığı konulardan biri olmuştur. 1970’li yıllarda Fama üç farklı bilgi kümesi ile piyasa etkinlik formlarını tanımlamıştır. Buna göre geçmiş fiyat ve hacim ile ilgili tüm bilgiler piyasa fiyatlarına yansıyorsa zayıf formda, kamuya açık tüm bilgiler piyasa fiyatlarına yansıyorsa yarı güçlü formda ve içeriden öğrenenlerin sahip olduğu bilgilerde dâhil olmak üzere tüm bilgiler piyasa fiyatlarına yansıyorsa piyasada güçlü formda etkinlik söz konusudur.

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Borsa İstanbul Sektör Endekslerinde Adaptif Piyasa Hipotezi Geçerliliğinin Test Edilmesi

Borsa İstanbul Sektör Endekslerinde Adaptif Piyasa Hipotezi Geçerliliğinin Test Edilmesi

Author(s): Okan Çelebi,Yunus Kiliç / Language(s): Turkish Publication Year: 0

Günümüzde bilgiye ulaşmak teknolojik imkanlar sayesinde her geçen gün daha kolay hale gelmektedir. Bilgi, kolay ulaşılabildiği gibi kolay paylaşılabilir ve finansal piyasaları da kolayca etkileyebilir bir duruma gelmiştir. Söz konusu bilginin piyasa fiyatlarına yansıdığı ve ortalama üzeri getirinin mümkün olmadığını öne süren Etkin Piyasa Hipotezi (EPH) ile yatırımcıların rasyonel davranmadığını, yanlı davranışlar ya da hatalı davranışlar sergileyebileceğini ve normalin üzerinde getirinin mümkün olabileceğini savunan Davranışsal Finans (DF) teorisi ile ilgili çalışmalar literatürde sıklıkla yer edinmiştir. EPH savunucuları piyasaların etkin, DF savunucuları ise piyasaların etkin olmadığı görüşünü savunmuşlardır.

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The Dynamics of Jump Intensity in Stock Prices: BIST 100 Example

The Dynamics of Jump Intensity in Stock Prices: BIST 100 Example

Author(s): Haluk Yener,Burak Alparslan Eroglu / Language(s): English Publication Year: 0

This paper is concerned with the estimation of the time-varying jump intensity of the Borsa Istanbul 100 (BIST 100) index. In the estimation phase, we utilize a new two-step method. In the first step, we employ wavelet filters to compute the number of jumps as a counting process. Next, we apply an integer-valued generalized autoregressive conditional heteroscedasticity model to examine the deterministic and stochastic components of the jump dynamics. Our results indicate not only deterministic diurnal patterns but also an autoregressive mechanism in BIST 100 jump dynamics.

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Ar-Ge ile Finansal Başarısızlık Arasındaki İlişki: Bilişim Sektörü Üzerine Bir Analiz

Ar-Ge ile Finansal Başarısızlık Arasındaki İlişki: Bilişim Sektörü Üzerine Bir Analiz

Author(s): Adem Ruhan Sönmez / Language(s): Turkish Publication Year: 0

21st Century One of the most important sectors of today's century is the informatics sector. The innovative activities of the companies in this sector are important in terms of financial investors and company policies. The aim of this study is to reveal whether the effect of R&D investments on financial failure is statistically significant. For this purpose, the data of companies operating in the IT Sector traded in Borsa Istanbul for the years 2018q1-2022q2 and the relationship between R&D investments and financial failure were examined. Panel Granger Causality method was used in the study. As a result of the analysis, it has been determined that there is a two-way relationship between R&D investments and Z-Score and between Z-Score and R&D investments.

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Finansal Piyasalarda Risk Yönetimi Üzerine Bir Araştırma

Finansal Piyasalarda Risk Yönetimi Üzerine Bir Araştırma

Author(s): İsmet Bolat / Language(s): Turkish Publication Year: 0

Financial markets have a very important role in national economies. Money markets and capital markets, which are the components of this market, are important markets that direct capital in the country. These markets undertake important functions for both individual investors and institutional investors. For the development of the country's economy, it is desired to increase the number of investments and projects. However, companies will need new resources for a new investment here. It is more difficult to reach these needed resources in underdeveloped and developing countries. Insufficient savings and insufficient production can be cited among the reasons for this lack of resources. In addition, even if they reach sufficient resources in the markets, companies cannot reach the level of efficiency they want in some cases due to some risks. First of all, we can divide the risk types that cause the efficiency of the firms to decrease by negatively affecting the firm's activities as systematic risk and unsystematic risk. The type of risk that affects the whole economy and that companies cannot intervene alone means systematic risk, and the type of risk that companies can reduce by taking some measures refers to non-systematic risk. Of course, systematic risk and non-systematic risk are divided into a number of sub-branches and can affect companies in different dimensions. Firms should correctly identify the type of risk that causes failure in their own activities, which reduces their efficiency, and after this determination, they should take some measures to eliminate or minimize the effect of this risk type. Here, first of all, the risk should be defined correctly and the type of risk should be determined. After the identification of the risks, measures should be taken to minimize or eliminate the negative effects of this risk. Firms can benefit from a number of methods while struggling with risks. In finance, the Capital Asset Pricing Model is a model used to determine the theoretically appropriate required rate of return for an asset to make decisions about adding assets to a well-diversified portfolio, and since unsystematic risk can be eliminated, the return of a risky investment will be in return for the systematic risk taken.

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Kripto Paralar ile Dolar Endeksi Arasında Varyansta Nedensellik İlişkisi

Kripto Paralar ile Dolar Endeksi Arasında Varyansta Nedensellik İlişkisi

Author(s): Serhat Sezen / Language(s): Turkish Publication Year: 0

In this paper, it is aimed to determine the possible existence of the volatility spillover effect between the seven cryptocurrencies (Bitcoin, Ethereum, Tether, BNB, Ripple, Cardano and Dogecoin) from which the largest sample volume can be obtained among the top ten cryptocurrencies with the dollar index and the highest market value. intended. For this purpose, using daily data between 31 December 2017 and 09 February 2023, the possible existence of the spillover effect between the dollar index and cryptocurrencies in return and volatility was investigated with the causality test in the mean and variance developed by Hong (2001). According to the results obtained from the causality test on average, a one-way causality relationship has been determined from the Dollar index to Bitcoin, Ethereum, BNB, Ripple and Cardano. This result shows that the changes seen in the prices of Bitcoin, Ethereum, BNB, Ripple and Cardano cryptocurrencies in the returns are affected by the price movements seen in the Dollar index. On the other hand, no causal relationship was found between the Dollar index and Tether and Dogecoin. According to the causality test results in variance, it has been determined that there is a bidirectional volatility spillover effect between the Dollar index and all cryptocurrencies in the study. This result means that Bitcoin, Ethereum, Tether, BNB, Ripple, Cardano and Dogecoin cryptocurrencies will react instantly and their volatility will increase in the face of a new news about the Dollar index; Similarly, if there is a new news on the market about the cryptocurrencies included in the study, the Dollar index will react immediately and its volatility will increase.

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Bankacılıkta Yeni Yaklaşım: Açık Bankacılık

Bankacılıkta Yeni Yaklaşım: Açık Bankacılık

Author(s): İsmail Tuna / Language(s): Turkish Publication Year: 0

One of the important digital innovations in finance is the open banking system, which has developed due to the sharing of customer information with third parties (for example, FinTech Companies and TPP-Takasbank Money Market). Open banking creates a new banking system by deriving developments in financial products and activities, with rapidly changing technology developing applications in the field of banking. When the studies on Open Banking are examined, it is seen that the activities carried out in Turkey are up to a certain point. When viewed from the perspective of the world, the studies mostly constitute an abstract framework. However, it is seen that the regulations regarding open banking in Turkey and in the world are increasing day by day. In this sense, the Banking Sector, which aims to achieve many goals such as easing people's transactions, offering various activities and expanding the customer area, from the establishment of Banking to the present day, has had to keep up with the era with the developing technology. While there are customer relations in the traditional Banking model, open Banking appears as a technological innovation that tries to differentiate this system. Open Banking has been the most extensive innovation in the digitalization phase of the banking industry to date. Both in responding to the needs and requirements of customers in a fast and innovative manner, the open banking model among banks has shown a great development phase from past to present. Especially open banking has a great importance among financial technologies in this sense. The need for technological innovation has increased even more, both with the proliferation of artificial intelligence in this field and with the increase of banking activities mostly in digital environments. For this reason, open banking has a leading position in the field of banking. In order for Turkey to advance in global competition and to maintain its presence in the banking sector in the digitalized world, it needs to take the changes and steps required by digitalization in the coming years.

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Hisse Senedi ve Kripto Varlık Piyasası Arasında Finansal Bağlantılılık ve Risk Aktarımı

Hisse Senedi ve Kripto Varlık Piyasası Arasında Finansal Bağlantılılık ve Risk Aktarımı

Author(s): Mevlüt Camgöz / Language(s): Turkish Publication Year: 0

The aim of this study is to reveal the financial risk connectedness and risk transmission mechanism between the stock market and the crypto asset market. Thus, it is aimed to contribute to the literature examining the relationships between the crypto asset market and conventional financial markets with new empirical findings and to reveal essential results for investors and policymakers. According to the findings of the research, although the spread from the VIX index to the cryptocurrencies is stronger, the spread from the cryptocurrencies to the VIX index turned out to be quite weak. In the network structure analyzed in the study, there has been a high degree of spread from the stock market and other cryptocurrencies toward ETH and BCH. BTC -clearly dominant-, and the equity market is the net transmitter, while ETH, BCH, LTC, and XRP are net receivers. According to the connectedness index result, the spread from the stock market to the crypto-asset markets is higher than the spread from the crypto-asset market to the stock market. In other words, while the volatility in the stock market is transferred to the crypto asset markets at a certain rate, the volatility observed in the crypto asset market is transferred to the stock market at a less significant level. It can be said that the main risk source for the crypto asset market is BTC. Among the five cryptocurrencies examined, BTC is a net transmitter, and the other four cryptocurrencies are net receivers. In addition, it has been understood that the spillover effect observed in the crypto asset market is largely due to its own internal shocks.

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Bist Şehir Endekslerinde Yer Alan Firmaların Finansal Performanslarının ÇKKV Yöntemleriyle Değerlendirilmesi: WEBDA ve LOPCOW Yöntemleriyle XSDNZ Endeksi Örneği

Bist Şehir Endekslerinde Yer Alan Firmaların Finansal Performanslarının ÇKKV Yöntemleriyle Değerlendirilmesi: WEBDA ve LOPCOW Yöntemleriyle XSDNZ Endeksi Örneği

Author(s): Selahattin Bektaş / Language(s): Turkish Publication Year: 0

The main purpose of this study is to evaluate the financial performance of companies in the BIST Denizli (XSDNZ) city index. In this regard, two MCDM methods were used for performance measurement. These methods are LOPCOW and WEBDA methods. While the criteria were objectively weighted with the LOPCOW method, the performance rankings of the companies were obtained with the WEBDA method. Thus, a hybrid model was proposed. Seven performance criteria were determined for performance analysis. According to the results of the performance analysis for 2021, it has been found that the first criterion with the most important weight among the criteria is equity. The second most important criterion was determined as short-term liabilities. The third most important criterion was determined as current assets. It has been determined that the company with the best financial performance is AYDEM. The second best company was determined to be MRCN. ACSEL was found to be the third best company in terms of performance.

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Sınırlı Rasyonalite Kavramının Anlaşılmasına Yönelik Bir Literatür Taraması

Sınırlı Rasyonalite Kavramının Anlaşılmasına Yönelik Bir Literatür Taraması

Author(s): Hilal Mola / Language(s): English Publication Year: 0

İktisat bilimi insan faktörlü sosyal bir bilim olmasına rağmen tarih boyunca birçok başka bilimler ile ilişki içerisinde olmuş ve diğer bilimlerin yöntemlerini kendi alanında kullanmıştır. Özellikle Walras’ın “Saf İktisadın Öğeleri” adlı çalışmasını yayınlaması ile birlikte iktisat bilimi fizik ve matematiğe daha çok yakınlaşmıştır. Birçok bilimin matematik temellerine oturtularak sağlamlaştırılması söz konusu olsa da iktisadın matematiğe olan yakınlığı sosyolojiden uzaklaşmasına ve psikolojinin göz ardı edilmesine neden olmuştur. Bu süreçte de iktisadi insan yanlış karar almayan rasyonel bir birey olarak varsayılmıştır. Fakat R. Solow, J. Hicks, W. Leontief, P. Samuelson gibi birçok ekonomist iktisat bilimini matematiğe olan bağlılığı nedeniyle eleştirmişler ve bireylerin aynı kalıplarda olmadıklarını dile getirmişlerdir (Acar, 2008). Belirtilen bu durum zamanla rasyonalite ve kişisel çıkarları peşinde koşan rasyonel birey olarak tanımlanan homo economicus kavramına eleştiriler getirmiş ve ekonomistleri yeni arayışlara yönlendirmiştir.

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