Search Results

You are looking at 1 - 10 of 105 items for :

  • Refine by Access: All Content x
Clear All

The paper analyses the potential benefits of marketing cooperatives in Hungary, employing a transaction cost economics framework. We found that the purchased quantity, the existence of contracts, flexibility and trust are the most important factors farmers consider when selling their products via a cooperative. The most striking result is that diversification has positive influences on the share of cooperatives in farmers’ sale. Furthermore, farmers with larger bargaining power have less willingness to sell their product to the cooperative. Surprisingly, asset specificity has rather negative effects on the share of cooperatives in members’ sales.

Restricted access

Abstract

Given the high priority accorded to research collaboration on the assumption that it yields higher productivity and impact rates than do non-collaborative results, research collaboration modes are assessed for their benefits and costs before being executed. Researchers are accountable for selecting their collaboration modes, a decision made through strategic decision making influenced by their environments and the trade-offs among alternatives. In this context, by using bibliographic information and related internal data from the Korea Institute of Machinery and Materials (KIMM, a representative Korean government institute of mechanical research), this paper examines the suggested yet unproven determinants of research collaboration modes that the SCI data set cannot reveal through a Multinomial Probit Model. The results indicate that informal communication, cultural proximity, academic excellence, external fund inspiration, and technology development levels play significant roles in the determination of specific collaboration modes, such as sole research, internal collaboration, domestic collaboration, and international collaboration. This paper refines collaboration mode studies by describing the actual collaboration phenomenon as it occurs in research institutes and the motivations prompting research collaboration, allowing research mangers to encourage researchers to collaborate in an appropriate decision-making context.

Restricted access

Abstract  

This paper presents a methodology to aggregate multidimensional research output. Using a tailored version of the non-parametric Data Envelopment Analysis model, we account for the large heterogeneity in research output and the individual researcher preferences by endogenously weighting the various output dimensions. The approach offers three important advantages compared to the traditional approaches: (1) flexibility in the aggregation of different research outputs into an overall evaluation score; (2) a reduction of the impact of measurement errors and a-typical observations; and (3) a correction for the influences of a wide variety of factors outside the evaluated researcher’s control. As a result, research evaluations are more effective representations of actual research performance. The methodology is illustrated on a data set of all faculty members at a large polytechnic university in Belgium. The sample includes questionnaire items on the motivation and perception of the researcher. This allows us to explore whether motivation and background characteristics (such as age, gender, retention, etc.,) of the researchers explain variations in measured research performance.

Open access

This study investigates the determinants of Turkish households’ saving and portfolio choice behaviour for the period of 2002–2006. The dataset includes 59,855 households, of whom only 10,829 report to have saved and invested. Hence, we first estimate a logit model to identify the characteristics of the households that have saved. Next, we estimate a multinomial logit model where the investment alternatives for the households are real estate, gold, foreign exchange, bank accounts, capital market investments, and investing into own business. The factors affecting the portfolio choices are the variables representing various aspects of households’ demographic, socioeconomic and residential location characteristics. The inflation level nearly doubled during the study period in Turkey. Hence, we also analyse the effects of inflation on households’ saving and portfolio choice decisions. The results of our logit model support the view that the inflation can increase the household savings on condition that the other macroeconomic factors are constant. Furthermore, inflation is also found to increase the probability of investing in capital market instruments. Households’ incomes, education levels, occupation, place of residence (rural/urban), car ownership and household size are found to be significant variables in explaining the variation in households’ saving and portfolio choice behaviour.

Restricted access

In this study, we challenge the problem of inadequate voluntary pension savings by exploring the micro-dataset of the Luxembourg Wealth Study (LWS) for three countries: Italy, the United Kingdom and the United States. The existing empirical literature usually focuses on the role of socio-demographic factors to understand this phenomenon, and theoretical studies additionally highlight the role of behavioural factors. However, empirical studies in this field are extremely scarce. The use of the LWS data enables us to fill this research gap. Separately for each country, we verify the role of individuals' risk attitudes and intertemporal choices in the demand for voluntary pension savings. To make the results more robust, we add a set of socio-demographic control variables to our regressions. Our findings clearly reveal that being more risk averse and being less forward looking negatively affect people's propensity to save for retirement. Furthermore, we confirm that age, gender and education are significant predictors of pension demand in each of the analysed countries. We argue that these conclusions have practical meaning to improve regulatory frameworks.

Restricted access

Abstract  

The enthalpy variations of pure n-tricosane (n-C23H48), pure n-pentacosane (n-C25H52) and sixteen binary mixtures were determined from 282 to 360 K. The differential enthalpy analyses were carried out on the pure components on the four terminal solid solutions, denoted βo(C23), β′o(C23), β′o(C25), βo(C25) and on the three intermediate phases, called β″1, β′1, β″2of the binary system (C23:C25) using a calorimeter of the Tian Calvet type. These variations can be represented by an analytical expression, which is derived from Einstein‘s model. The two Rotator phases β-RI and α-RII were also studied.

Restricted access

Abstract  

The crystal C81H78N12O6Cd3 was synthesized and its structure was determined by single crystal X-ray diffraction method. The complex crystallizes in the monoclinic system space group P21/n with cell parameters, a=15.959(4) , b=26.222(3) , c=25.907(6) , β=101.60(2). The non-isothermal kinetics of the crystal was studied by use of non-isothermal TG and DTG curves. The kinetic parameters were analyzed by means of integral and differential methods, and mechanism functions of the thermal decomposition reaction for its second step were proposed. The kinetic equation of thermal decomposition is expressed as: dα/dt=Aexp(-E/RT)1.5(1-α)4/3[1/(1-α)1/3-1]−1. The average values of E(kJ mol−1) and lnA/s−1 are 339.25, 43.95, respectively.

Restricted access

-dependent hyperthermophyles in terms of a lack of tetraether lipids and the direct linkage of inositol and sugar moieties [ 2 ]. The core lipid consists solely of C 25,25 -archaeol (2,3-di-sesterpanyl- sn -glycerol). Then, with a glucosylinositol polar head-group, C 25

Restricted access

Abstract  

A barium-iron(III) [BaFe(cr-salen)(py)2](ClO4)3 (1) was prepared and an iron(III) complex [Fe(cr-salen)(py)2]ClO4 (2) complex was obtained by removing Ba2+ ion from the barium-iron(III) complexes with guanidinium sulfate. These complexes are in the high-spin state both in the solid state and in acetonitrile. Single crystals of [BaFe(cr-salen)(MeOH)2]2O(ClO4)4·2MeOH (3) were obtained by slow evaporation of a solution of (2) and Ba(ClO4)2, and the single crystal X-ray structure of (3) was determined: Crystal data for [BaFe(cr-salen)(MeOH)2]4O2(ClO4)4·2MeOH: C25H36N2O17.5Cl2BaFe, are: space group C2/c, Z=8, a=24.79(7) Å, b=16.11(6) Å, c=17.24(6) Å, V=6753(36) Å3, R=0.133, Rw=0.154. The structure of the complex has a one order polymeric chain. An iron atom is located in a cavity of square pyramidal geometry and bridged by an oxygen atom of μ-oxo. A barium ion is sitted in a quasi-crownether ring and bridged by two perchlorate anions.

Restricted access

. Chem. Earth (C) , 25(4), 307-310. Phys. Chem. Earth (C) 25 307 310 Schaer S

Restricted access