Selection of test cases plays a key role in improving testing efficiency. Black-box testing is an important way of testing, and its validity lies on the selection of test cases in some sense. A reasonable and effectiv...Selection of test cases plays a key role in improving testing efficiency. Black-box testing is an important way of testing, and its validity lies on the selection of test cases in some sense. A reasonable and effective method about the selection and generation of test cases is urgently needed. This letter first introduces some usualmethods on black-box test case generation,then proposes a new algorithm based on interface parameters and discusses its properties, finally shows the effectiveness of the algorithm.展开更多
Effective thermal conductivity with convection and radiation is analyzed by the homogenization method. This method can precisely represent the microstructure of a packed bed. In this study, the effects of parameters s...Effective thermal conductivity with convection and radiation is analyzed by the homogenization method. This method can precisely represent the microstructure of a packed bed. In this study, the effects of parameters such as the radiation emissivity, temperature, contact area and particle size of the packed bed on the conductivity have been estimated. For example, heat transfer by radiation does not dominate if the material has voids of less than l mm in size. Moreover, the effects of contact area and pressure on effective thermal conductivity are negligible for thermal radiation. By considering the microscopic behavior of a packed bed, the homogenization method is thus a powerful tool for estimating the bed＇s effective thermal conductivity.展开更多
Objective To observe the clinical efficacy of moxibustion at B ihuì（百会 GV 20） combined with penetration needling in treatment of intractable facial paralysis. Methods Sixty patients with intractable facial pa...Objective To observe the clinical efficacy of moxibustion at B ihuì（百会 GV 20） combined with penetration needling in treatment of intractable facial paralysis. Methods Sixty patients with intractable facial paralysis included in the study were divided into two groups according to the random number table, with 30 patients in observation group（group A）, and 30 patients in control group（group B）. Moxibustion at GV 20 combined with penetration needling were adopted in group A, and simple penetration needling was applied in group B. Once daily, thirty days of treatment were required. The House Brackmann（H-B） facial nerve function grading and improvement of clinical symptoms were observed. Results The H-B function grading and improvement of clinical symptoms in group A were superior to group B, and the difference was statistically significant（P〈0.05）. Conclusion The clinical efficacy of moxibustion at GV 20 combined with penetration needling in treatment of intractable facial paralysis is definite, and the treatment method is deserving of clinical promotion.展开更多
基金Supported in part by the National Natural Science Foundation of China (NSFC)(60073012),Natural Science Foundation of Jiangsu(BK2001004)
文摘Selection of test cases plays a key role in improving testing efficiency. Black-box testing is an important way of testing, and its validity lies on the selection of test cases in some sense. A reasonable and effective method about the selection and generation of test cases is urgently needed. This letter first introduces some usualmethods on black-box test case generation,then proposes a new algorithm based on interface parameters and discusses its properties, finally shows the effectiveness of the algorithm.
文摘Effective thermal conductivity with convection and radiation is analyzed by the homogenization method. This method can precisely represent the microstructure of a packed bed. In this study, the effects of parameters such as the radiation emissivity, temperature, contact area and particle size of the packed bed on the conductivity have been estimated. For example, heat transfer by radiation does not dominate if the material has voids of less than l mm in size. Moreover, the effects of contact area and pressure on effective thermal conductivity are negligible for thermal radiation. By considering the microscopic behavior of a packed bed, the homogenization method is thus a powerful tool for estimating the bed＇s effective thermal conductivity.
文摘Objective To observe the clinical efficacy of moxibustion at B ihuì（百会 GV 20） combined with penetration needling in treatment of intractable facial paralysis. Methods Sixty patients with intractable facial paralysis included in the study were divided into two groups according to the random number table, with 30 patients in observation group（group A）, and 30 patients in control group（group B）. Moxibustion at GV 20 combined with penetration needling were adopted in group A, and simple penetration needling was applied in group B. Once daily, thirty days of treatment were required. The House Brackmann（H-B） facial nerve function grading and improvement of clinical symptoms were observed. Results The H-B function grading and improvement of clinical symptoms in group A were superior to group B, and the difference was statistically significant（P〈0.05）. Conclusion The clinical efficacy of moxibustion at GV 20 combined with penetration needling in treatment of intractable facial paralysis is definite, and the treatment method is deserving of clinical promotion.
