Using a unique individual level data on the membership of Rotating Savings and Credit Associations (ROSCAs) collected in 1994 from seven major urban centres in Ethiopia, we provide one of the few econometric tests of the economic theory of ROSCAs. In recognition of the heterogeneity of rosca types across space, we provide basic information about the characteristics of roscas in urban areas of E...

OBJECTIVE To estimate the willingness to pay (WTP) per quality-adjusted life year (QALY) value for life-saving treatments and to determine factors affecting the WTP per QALY value. DESIGN A cross-sectional survey with multistage sampling and face-to-face interviews. SETTING General population in the southern part of Thailand. PARTICIPANTS A total of 600 individuals were included in the st...

In the process of protein purification, the amount of proteins isolated with the help of commercial protein purification processes remains uncertain and vague. The present paper proposed a set of fuzzy rule system based on Fuzzy Expert System (FES) which predicts the amount of purified proteins based upon the flow rate of the protein in column, pH and binding capacity of resin to desired protei...

In this paper, k-anonymity notion is adopted to be used in wireless sensor networks (WSN) as a security framework with two levels of privacy. A base level of privacy is provided for the data shared with semitrusted sink and a deeper level of privacy is provided against eavesdroppers. In the proposed method, some portions of data are encrypted and the rest is generalized. Generalization shortens...

An industrial sector uses more energy than any other end-use sectors and currently this sector is consuming about 37% of the world’s total delivered energy. Energy is consumed in the industrial sector by a diverse group of industries includingmanufacturing, agriculture, mining, and construction and for a wide range of activities, such as processing and assembly, space conditioning, and lighting...

existed electricity grids deliver produced power to the consumer passing through transmission and distribution grids. according to high losses of these grids in transmission level and inexistence of bilateral interaction for simultaneous information exchange, a concept of smart grids were made by capabilities such as consciously participation of consumers in the smart electricity grids, an amou...