فهرست مقالات heat production

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  1 - Efficiency evaluation of wheat farming: a network data envelopment analysis approach
  Reza Kazemi Matin Roza Azizi
  10.22094/joie.2016.254
  Traditional data envelopment analysis (DEA) models deal with measurement of relative efficiency of decision making units (DMUs) in which multiple-inputs consumed to produce multiple-outputs. One of the drawbacks of these models is neglecting internal processes of each s چکیده کامل

  Traditional data envelopment analysis (DEA) models deal with measurement of relative efficiency of decision making units (DMUs) in which multiple-inputs consumed to produce multiple-outputs. One of the drawbacks of these models is neglecting internal processes of each system, which may have intermediate products and/or independent inputs and/or outputs. In this paper some methods which are usable for network systems are briefly reviewed. A new unified model is also introduced which can be easily applied for performance measurement of all type of network production process. As an application of network DEA models, performance evaluation of wheat production in Iran provinces is considered and the results are compared.Traditional data envelopment analysis (DEA) models deal with measurement of relative efficiency of decision making units (DMUs) in which multiple-inputs consumed to produce multiple-outputs. One of the drawbacks of these models is neglecting internal processes of each system, which may have intermediate products and/or independent inputs and/or outputs. In this paper some methods which are usable for network systems are briefly reviewed. A new unified model is also introduced which can be easily applied for performance measurement of all type of network production process. As an application of network DEA models, performance evaluation of wheat production in Iran provinces is considered and the results are compared. پرونده مقاله
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  2 - Effects of Chitosan and Whole Raw Soybeans on Feeding Behavior and Heat Losses of Jersey Heifers
  اچ.م.سی. هراکی ج.ر. گاندرا ای.ر. اُلیویرا سی.اس. تاکیا ر.اچ.ت.ب. گواِس آ.م.آ. گابریل جی.سی.جی. رُدرگیوس ای.ر.اس. گاندرا ت.ل. پریرا جِی. دامیانی جِی.د.اُ. باتیستا
  This study aimed to determine the effects of chitosan, whole raw soybeans or their interaction on feeding behavior and heat losses through thermography assay of Jersey heifers fed high concentrate diets. Twelve Jersey heifers (age of 6±0.5 months and 139.50&plusm چکیده کامل

  This study aimed to determine the effects of chitosan, whole raw soybeans or their interaction on feeding behavior and heat losses through thermography assay of Jersey heifers fed high concentrate diets. Twelve Jersey heifers (age of 6±0.5 months and 139.50±25.56 kg of live weight, mean±SD) were randomly assigned to a replicated latin square design with 2 × 2 factorial treatment arrangement. The experimental period consisted of 14 days of adaptation to the diets, 6 days of sampling and 5 days of wash out. The diets were: control (CO), chitosan (CHI, inclusion of 20 g/kg dry matter (DM) of chitosan), whole raw soybeans (WS, 163.0 g/kg of WS on diet DM basis), and chitosan + whole raw soybeans (CHI+WS). Chitosan decreased DM and neutral detergent fiber (NDF) intake (0.79 and 0.31 kg/d, respectively), increased the eating time (31.88 min) and decreased the NDF content of regurgitate rumen bolus (57 g). Whole raw soybeans did not affect feeding behavior, except for a higher time in standing rest. The association of CHI and WS increased the time which animal ruminated stand. The diets did not influence superficial temperature of heifers. However, WS diet increased heat losses by radiation and convection. The highest values of heat losses were observed after 2 hours of feeding. The interaction of CHI and WS did not alter feeding behavior and heat losses. Feeding WS to heifers increased the total heat losses. پرونده مقاله
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  3 - Impact of Farmer Field Schools on Farmer`s Adoption of Wheat Production Technical Packages in Gezira Scheme, Sudan
  Ahmed Mirghani Abdel Rahman Wisal Abd Ebrahim Babiker Mohammed
  The main objective of this study was to assess the impact of farmer field schools on adoption of technical packages of wheat production in Gezira Scheme, Sudan. Field survey was used to collect data from 50 FFS-participants of two schools (25 from each school), and also چکیده کامل

  The main objective of this study was to assess the impact of farmer field schools on adoption of technical packages of wheat production in Gezira Scheme, Sudan. Field survey was used to collect data from 50 FFS-participants of two schools (25 from each school), and also equal number from Non-FFS participants were selected for comparison. Close ended questionnaire was used in data collection. The data were statistically analyzed using (SPSS), discussed interpreted using percentage, frequency distribution and chi-squire test. The descriptive analyses showed that the FFS-participants were adopted the application of wheat production technical packages: land preparation ( First :86%, second:74%) , method of land preparation (92%),use of recommended wheat varieties (92%), seed rate(66%) , seed treatment with gaucho (86%), sowing date ( 76%), fertilizers rates(66%) ,number of irrigations(82%) , harvesting time (52%).The chi-square test showed significant association between farmer`s adoption of wheat production technical packages and their participation in FFS weekly training. From this study it can be concluded that the FFS is very effective agricultural extension approach which can be adopted to transfer knowledge, recommended cultural practices of agricultural crops to farmers, and consequently increase income of them through their participation in various FFS activities. The study recommends that FFS should become national policy, share authority of extension organizations in finance, control and execution of FFS activities with farmer unions and other partners for more effective participations of farmers in all activities of the schools and the current curriculum of FFS should be developed. پرونده مقاله