目的将食品消费者偏好调查运用于茶产品开发中,建立一种新的沱茶产品开发方法。方法采用消费者喜好标度以及刚刚好标度(just about right, JAR)对市售13种茶样品以及自制沱茶样进行审评,选定最佳产品后结合滋味强度分析以及"惩罚&q...目的将食品消费者偏好调查运用于茶产品开发中,建立一种新的沱茶产品开发方法。方法采用消费者喜好标度以及刚刚好标度(just about right, JAR)对市售13种茶样品以及自制沱茶样进行审评,选定最佳产品后结合滋味强度分析以及"惩罚"分析确定拼配方案。结果根据消费者偏好调查结果发现,不同样品之间风味差距明显,其中4号样品在香气和滋味上对消费者都具有较大的吸引力,具有滋味鲜甜,熟板栗香突出的风味特征,选取4号样品作为产品拼配的方向指标,采用"惩罚"分析对4号样品的分属性进行分析,4号样品需要改进的指标依次为:熟板栗香、鲜味、苦味以及滋味中的烟味。根据滋味强度以及"惩罚"分析的结果对原料进行拼配,发现4个拼配方案均符合"惩罚"分析结果。结论消费者偏好调查对沱茶产品的开发具有一定指导意义。展开更多
The guide-weight method is introduced to solve the topology optimization problems of thermoelastic structures in this paper.First,the solid isotropic microstructure with penalization(SIMP)with different penalty factor...The guide-weight method is introduced to solve the topology optimization problems of thermoelastic structures in this paper.First,the solid isotropic microstructure with penalization(SIMP)with different penalty factors is selected as a material interpolation model for the thermal and mechanical fields.The general criteria of the guide-weight method is then presented.Two types of iteration formulas of the guide-weight method are applied to the topology optimization of thermoelastic structures,one of which is to minimize the mean compliance of the structure with material constraint,whereas the other one is to minimize the total weight with displacement constraint.For each type of problem,sensitivity analysis is conducted based on SIMP model.Finally,four classical 2-dimensional numerical examples and a 3-dimensional numerical example considering the thermal field are selected to perform calculation.The factors that affect the optimal topology are discussed,and the performance of the guide-weight method is tested.The results show that the guide-weight method has the advantages of simple iterative formula,fast convergence and relatively clear topology result.展开更多
文摘目的将食品消费者偏好调查运用于茶产品开发中,建立一种新的沱茶产品开发方法。方法采用消费者喜好标度以及刚刚好标度(just about right, JAR)对市售13种茶样品以及自制沱茶样进行审评,选定最佳产品后结合滋味强度分析以及"惩罚"分析确定拼配方案。结果根据消费者偏好调查结果发现,不同样品之间风味差距明显,其中4号样品在香气和滋味上对消费者都具有较大的吸引力,具有滋味鲜甜,熟板栗香突出的风味特征,选取4号样品作为产品拼配的方向指标,采用"惩罚"分析对4号样品的分属性进行分析,4号样品需要改进的指标依次为:熟板栗香、鲜味、苦味以及滋味中的烟味。根据滋味强度以及"惩罚"分析的结果对原料进行拼配,发现4个拼配方案均符合"惩罚"分析结果。结论消费者偏好调查对沱茶产品的开发具有一定指导意义。
基金supported by the National Natural Science Foundation of China(Grant No.51375251)the National Basic Research Program("973"Program)(Grant No.2013CB035400)of China
文摘The guide-weight method is introduced to solve the topology optimization problems of thermoelastic structures in this paper.First,the solid isotropic microstructure with penalization(SIMP)with different penalty factors is selected as a material interpolation model for the thermal and mechanical fields.The general criteria of the guide-weight method is then presented.Two types of iteration formulas of the guide-weight method are applied to the topology optimization of thermoelastic structures,one of which is to minimize the mean compliance of the structure with material constraint,whereas the other one is to minimize the total weight with displacement constraint.For each type of problem,sensitivity analysis is conducted based on SIMP model.Finally,four classical 2-dimensional numerical examples and a 3-dimensional numerical example considering the thermal field are selected to perform calculation.The factors that affect the optimal topology are discussed,and the performance of the guide-weight method is tested.The results show that the guide-weight method has the advantages of simple iterative formula,fast convergence and relatively clear topology result.
