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Ayman E. Khedr Amira M. Idrees Abd El-Fatah Hegazy Samir El-Shewy 《Enterprise Information Systems》2018,12(2):196-217
This study presents a configurable approach for recommendations which determines the suitable recommendation method for each field based on the characteristics of its data, the method includes determining the suitable technique for selecting a representative sample of the provided data. Then selecting the suitable feature weighting measure to provide a correct weight for each feature based on its effect on the recommendations. Finally, selecting the suitable algorithm to provide the required recommendations. The proposed configurable approach could be applied on different domains. The experiments have revealed that the approach is able to provide recommendations with only 0.89 error rate percentage. 相似文献
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Mark Stevenson Sayed Faruque Abd Almajil Muhammad Farhan Brian Fildes Brendan Lawrence 《International journal of injury control and safety promotion》2017,24(1):84-88
This study evaluated the effectiveness of red-light cameras in Dammam, the Kingdom of Saudi Arabia. Two methods were used to assess changes in crash risk at the intersections at which the red-light camera programme had been operating. Geospatial analysis was used to visualize trends in road crash density over the geographical region of Dammam and a pre--post-camera crash analysis was undertaken. The distribution of injury crashes was greater than that of crashes which included property damage, the latter of which was concentrated around central Dammam. The five red-light cameras installed in 2012 were located outside areas of high-crash and injury density, and the total number of crashes reported in the three-month periods after installation was double that before the cameras were installed. This increase in the number of crashes also occurred at the five comparison sites (without red-light cameras), indicating a null effect. The findings from this study are contrary to previous evaluations of speed management programmes associated with red-light cameras. The study highlights the challenges in obtaining data for such research and illustrates that a reliance on overt, fixed camera's to manage speed is unlikely to deliver significant reductions in road trauma. 相似文献
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Hegazy Elgazar 《International Advances in Economic Research》2002,8(1):65-78
This paper examines the properties of a dynamic equilibrium model focused on sectoral specialization and dynamic competitiveness
in international trade. Factors of competitiveness and growth were broken down into three parameters on the export side, two
parameters on the import side, and two parameters on the productivity side. Furthermore, the relation between the growth rate
of productivity and the wages index is examined. In the first period, 1960–1972, the rapid change in the structure of Japanese
production and the composition of Japanese exports paralleled the rapid structural change in the international market and
the rapid change in the prices of Japanese exports, stimulating Japanese exports to the international market. The engine of
economic growth here is a significant technological change along with improvement of labor and capital productivity. In the
second period, 1973–1996, factors such as improving the quality of production, cumulative experience, and the flexibility
of price elasticity were crucial factors in increasing Japanese exports. Despite the decline in growth rate of technological
change, the engine continued to grow and was supported by increasing the value of the economies of scale. 相似文献
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Nicolás C. Bronfman Esperanza López Vázquez Virna Vaneza Gutiérrez Luis Abdón Cifuentes 《Journal of Risk Research》2013,16(6):755-773
Studies over the past decade have found empirical links between trust in risk management institutions and the risk perceptions and acceptability of various individual hazards. Mostly addressing food technologies, no study to date has explored wider possible relationships among all four core variables (risk, benefit, trust and acceptability) covering a heterogeneous group of hazards. Our prime objective was to ascertain effects among social trust in regulatory entities, and the public's perceived risk, perceived benefit and the degree of acceptability towards both technological and environmental hazards. We also assess whether trust in regulatory authorities is the cause (causal model) or a consequence (associationist model) of a hazard's acceptability for a wide and heterogeneous range of hazards on all four core variables. Using a web‐based survey, 539 undergraduates in Chile rated the five variables across 30 hazards. Implications for technology and environmental risk management organizations are discussed. Independent of the magnitude of the perceived risk or benefit surrounding a given hazard, or how knowledgeable the public claim to be of it, the trust sustained in regulatory institutions will either generate or be the consequence of public attitudes towards the hazard. 相似文献
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Siti Nasihah Imran Nitty Hirawaty Kamarulzaman Ismail Abd Latif Nolila Mohd Nawi 《食品市场学杂志》2014,20(4):102-121
The increasing demand for chicken meat has caused producers to increase their productivity through enhanced production techniques. Further increase in demand for quality meat products has been predicted in the country. This study seeks to investigate factors that influence consumer perception toward chicken meat quality. Face-to-face interviews were carried out with 569 consumers at selected shopping malls located in Klang Valley areas. The majority of the respondents perceived quality as an important criterion for buying decisions. The finding revealed that nine factors have influenced consumer perception on meat quality, namely color, size, springiness, chicken aroma, fatty/oily taste, sweetness, visible fat, tenderness, and fibrousness. Among these factors, tenderness was found to be the most important criterion that influenced consumer preference toward chicken meat quality during buying decisions. Good production practices and proper marketing strategies are among recommendations to poultry industry players toward fulfilling consumer demand for good quality chicken meat. 相似文献
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This paper analyses the effects of off-balance sheet (OBS) activities and various types of risks on the cost and profit efficiencies of banks in seven East Asian countries between 2001 and 2008. Cost and profit efficiency scores are estimated using the data envelopment analysis approach. The results of this analysis are then used to identify the impact of OBS activities and risk exposures on cost and profit efficiencies using a Tobit regression. Bank insolvency risk (as measured by z-scores) is positively related to profit efficiency, while interest sensitivity, size, equity to total assets and OBS exposures all impact on cost efficiency. The analysis of the impact of input and output slacks illustrates that in around 1 in 5 cases banks’ cost efficiency can be improved by adjusting the former variables, whereas in only around 1 in 100 cases a similar outcome is possible for profit efficiency. 相似文献
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Telekonl Malaysia (TM) was floated as a private enterprise in 1990 as part of the country's overall privatisation programme. The programme included the usual privatisation goals of competition, reduced state involvement, growth and efficiency, but also a redistributional goal to enhance the Bumiputra community. This paper discusses whether the Malaysian government has been able to reconcile all its stated objectives, and suggests that the Bumiputra redistributional goal has been favoured at the expense of the other objectives. It is concluded that the privatisation of TM was cosmetic and that the government has used TM to implement its strategy, mainly through internal control of its corporate affairs, which runs contrary to the most widely accepted views of privatisation. 相似文献