CONSUMPTION (IN)EFFICIENCY AND FINANCIAL ACCOUNT MANAGEMENT

Consumption may be inefficient when a household cannot choose the optimal bundle of goods at a minimum cost. After discussing alternative approaches, this paper proposes the use of money metric indirect utility function motivated by Feenstra and Varian in measuring consumption inefficiency. Then, Bamoul–Tobin transactions demand for money model is extended to show how household ability to manage its income, expenditure and financial accounts may affect consumption inefficiency. Results of the stochastic cost frontier approach, which is employed in estimation and the prediction of the European Union household consumption inefficiency, suggest that household expenditure performance is partly explained by the changes in the consumption efficiency and the efficiency is not independent of financial account management.     

A predictive filtering approach for clarifying bibliometric datasets: an example on the research articles related to industry 4.0

ABSTRACT

This study proposes a filtering approach based on text classification and a fuzzy multi-criteria decision-making technique to select the relevant bibliometric data for further analyses in the scope of bibliometrics, scientometrics, and related methodologies. The proposed approach is illustrated on Industry 4.0 and internet of things which are the concepts that currently draw utmost attention with a growing number of research and applications. Accordingly, various findings are presented revealing the characteristics of the selected bibliometric data with the help of text and network analytics. The potential contribution of this study is two-fold such that the study not only suggests a novel approach for clarifying the retrieved bibliometric data but also emphasises the mainstream research areas and directions of Industry 4.0 along with the concept of the internet of things. Thus, an analysis framework with computing techniques has been used to reveal the characteristics of literature in a field of technology.     

Business cycle co-movements between South Africa and the BRIC countries

This article examines the relationships between South African economy and the economies of the BRIC (Brazil, Russia, India and China). In particular, it identifies the nature and key features of the co-movement of South African business cycles with cycles of the BRIC countries. It uses the dynamic factor model to a set of 307 macroeconomic series during the period 1995Q2 to 2009Q4. We found significant evidence of synchronization between South Africa and the BRIC countries over the business cycle, although the magnitude of co-movement differs with each country. India portrays strong ties with South Africa over time. Moreover, Brazil, China and Russia lead South Africa in the long run, while India is contemporaneous. Further, the findings imply that the first two factors are BRICS factors while the third one is a US factor.     

The determinants of FDI in Turkey: A Markov Regime-Switching approach

This paper considers movements of Foreign Direct Investments (FDI) in Turkey, and therefore, to understand the dynamics of FDI, runs several nonlinear FDI equations in which the basic determinants of FDI in Turkey are determined through Markov Regime-Switching Models (MSMs). The statistical properties of Markov Regime-Switching time series models are more desirable than those of conventional time series or panel regression models. Through these properties of MSMs, i) one can observe structural changes, if they exist, in FDI equations through time, ii) if, in fact, the true FDI regression equation follows a nonlinear relationship, MSMs fit data better than the linear models. This paper eventually follows maximum likelihood methodology of Markov Regime-Switching Model (MSM) to search for the possible structural changes in level and/or trends and possible changes in parameters of independent variables of FDI–MSM equations through the transition probabilities. In conclusion, this paper yields the outcome that Turkish FDI growth equation has significant structural changes in level and trend and that has significant coefficient shifts in explanatory variables. These explanatory variables are Turkish GDP Growth, Labor Cost, the Electricity Price Growth, the growth in average prices of High Sulphur Fuel Oil, Cooking Coal, Steam Coal and Natural Gas, Export Growth, Import Growth, Discount Rate and Country Risk Indexes for Turkey, US and EU, respectively, within the time interval from 1988 first quarter to 2010 second quarter.     

Short- and long-term market returns of international codevelopment alliances of new products

Strategic alliances entail process-oriented decisions, in which information about outcomes is unveiled over time. Therefore, it is difficult for investors to gauge the value of such decisions in the short term; longitudinal analysis is necessary. Accordingly, the authors apply latent growth modeling to a data set of 270 international codevelopment alliances announced over an 18-year period. The results demonstrate that investors reward firms for their international codevelopment alliances in the short term but punish them in the long term. Initially, exchange conditions have positive effects, but these effects decrease over time. However, the decrease slows when firms’ market updates contain positive news. Although investors view sharing of innovation resources as a competitive advantage in the short term, they perceive exchange conditions as transaction hazards in the long term. The results also show that long-term decreases in market returns are greater when codevelopment activities are conducted offshore rather than onshore.

     

Consumer satisfaction and loyalty derived from the perceived quality of individual banking services: A field study in Eskişehir from Turkey

The research project intends to find out the differences in the quality of the services rendered by the national banks of Turkey as perceived by the bank customers. This paper is an academically held field research conducted in May 2000 in the city of Eski?ehir Turkey, covering 1340 respondents who are regular bank customers, that is, who carry out banking transactions more than once in a month. These banks are all well-known, nation-wide financial institutions publicly or privately owned and are classified under three main groups depending on their ownership style and their size. Respondents are selected systematically from different age groups, income groups, and occupations reflecting both sexes. A questionnaire form included ten close-end multiple-choice questions (excluding demographic questions) is designed for the research purpose     

An integrated model for stock replenishment and shipment scheduling under common carrier dispatch costs

We examine a joint inventory replenishment and shipment scheduling problem that arises in the context of a vendor-managed inventory (VMI) arrangement. Since a temporal shipment consolidation policy is being implemented, the inventory requirements at the vendor are affected by the timing and quantity of shipment release. The vendor’s problem is to determine an integrated policy for inventory replenishment and shipment release and to set its parameters. We develop analytical models for computing such integrated policies where it is economical to use common carriage for outbound transportation. We propose algorithmic approaches to set the optimal policy parameter values.     

Sea turtle interactions with Hawaii's longline fishery: an extended multi-objective programming model incorporating spatial and seasonal dimensions

The numerous discussions regarding the advantages and disadvantages of Turkey's becoming a member of the Customs Union has been inconclusive. The empirical analysis that mostly focus on the changes in the volume of trade without much regard to the conjectural changes have also been insufficient. This study attempts to shed light on this issue in a formal analysis of Turkey's international trade by empirically accounting for the changes before and after the Customs Union Agreement (CUA). In doing so, we explicitly account for the concurrent changes in the macroeconomic environment that may have affected Turkey's trade with the rest of the world. Our empirical findings indicate that CUA has not only positively impacted on Turkey's trade, but also led to changes in the behaviour of both exports and imports with regards to their responsiveness to underlying variables.     

Consumer choice and local network effects in mobile telecommunications in Turkey

The aim of this paper is to analyze the extent of network effects in mobile telecommunications in Turkey, and to identify other determinants of consumer choice based on consumer survey data. This study shows that there are regional disparities in the adoption of network services in Turkey, the attractiveness of the different networks varies for consumers between different regions. The results show that local network effects are significant for consumer choice. This finding means that consumers are more likely to be affected by the choices of other people within their local area than by the overall size of a network. Furthermore, local network effects also outweigh macro network effects at least in Turkey.     

How do firms adjust their prices in Turkey? Micro-level evidence

This article investigates the pricing behaviour of Turkish firms over the period 1988–2006 on the basis of firm-level micro data. The duration of prices is found to be 3.9 months on average. There is no clear heterogeneity across main groupings in the frequency of price changes, but more dependence on imported goods reduces price stickiness. Price decreases are less frequent than price increases, indicating downward rigidity in prices. There is evidence in favour of both time and state-dependent price setting behaviours. Further, there is a low degree of synchronization of price changes across firms, whereas price increases tend to be more synchronized than price decreases. Ordered probit models show that price adjustments depend on the type of the shock: the pass-through of a change in the cost is faster than changing demand. Besides, estimated probabilities of price adjustments with 5-years rolling windows reveal that inflation targeting has succeeded in bringing down the probability of price increases, whereas downward price rigidity has not weakened yet.