In order to determine the effect of twine thickness on the size-selectivity of the driftnet used for the yellow croaker, size-selectivity tests were conducted with three different twine thicknesses(monofi lament diame...In order to determine the effect of twine thickness on the size-selectivity of the driftnet used for the yellow croaker, size-selectivity tests were conducted with three different twine thicknesses(monofi lament diameters of 0.279 mm(number's method; No. 3), 0.321 mm(No. 4), and 0.360 mm(No. 5)) of driftnets for the yellow croaker in the seas around Chooja-do, Jeju Islands. The selectivity curve was estimated by using Kitahara's method. In order to determine the physical properties of the twine used in the experimental fi shing nets, we measured the breaking load, elongation, and stiffness under both dry and wet conditions. In terms of physical properties, the thinnest twine(No. 3) had the strongest breaking strength per unit cross-sectional area, along with good elongation and excellent fl exibility. The thickest twine(No. 5) had the lowest fl exibility. In terms of selectivity, the net of No. 3 twine showed the broadest selection range and, thus, a relatively low selectivity compared with the other nets, while the less fl exible net of No. 5 twine showed the narrowest selectivity range and high selectivity. In addition, it was found that a thicker twine resulted in a smaller haul of small fi sh. Therefore, it can be inferred that the thickness of the twine affects the size of the catch and selectivity, and thus the size composition of the catch as well.展开更多
Although Brazil has a long history of having insider trading laws （IT laws） in place and became the first emerging country to enforce the IT laws （Bhattacharya ＆ Daouk, 2002）, criminal sanctions and hefty monetar...Although Brazil has a long history of having insider trading laws （IT laws） in place and became the first emerging country to enforce the IT laws （Bhattacharya ＆ Daouk, 2002）, criminal sanctions and hefty monetary penalties were only made possible by the amendment of its laws against IT on October 31, 2001. We study the stock price effects of merger announcements made by 151 firms over two periods, before and after the change of IT laws. Our empirical results suggest that target firms attained positive price run-ups in pre-announcement windows before, but not after, the legal regime change. While acquiring firms had strong positive pre-announcement reactions in both legal regimes, the abnormal returns （AR） decreased in the more stringent legal regime. These results indicate that more stringent IT laws may deter IT and improve market efficiency in an emerging country.展开更多
Objective： To observe the clinical efficacy of puncturing lumbar acupoints in treating knee joint pain. Methods： Thirty-seven patients suffered from knee joint pain were treated by puncturing lumbar acupoints combin...Objective： To observe the clinical efficacy of puncturing lumbar acupoints in treating knee joint pain. Methods： Thirty-seven patients suffered from knee joint pain were treated by puncturing lumbar acupoints combined with cupping therapy. Visual Analog Scale （VAS） was scored before and after the first treatment as well as the second treatment. Result： Before treatment, VAS score was 5.3±1.2. After the first treatment, VAS score descended to 1.9±0.8. Before the second treatment, VAS score was 2.1±0.7. After the second treatment, VAS score descended to 0.7±0.6. Conclusion： Puncturing lumbar acupoints is quite effective in treating knee joint pain caused by lumbar diseases.展开更多
Objective: To observe the effect of comprehensive treatment for hip fracture in old people. Methods: Three hundred and seventy two old patients with hip fractures were randomly divided into two groups, Group A and Gro...Objective: To observe the effect of comprehensive treatment for hip fracture in old people. Methods: Three hundred and seventy two old patients with hip fractures were randomly divided into two groups, Group A and Group B. Cases in Group A were treated only by operations. Cases in Group B received comprehensive treatment. The Singh Indexes of both uninjured and injured femoral necks were used to judge the osteoporosis levels before operation and one year after the operation. The function of injured hip joints was evaluated one year postoperatively. Results: Complications occurred in 36.56 % of the cases in Group A and 5.91 % of Group B. One year postoperatively, the Singh Index degree distributions of both uninjured and injured femoral necks in Group A had no significant difference compared with those before the operation (P> 0.05 ). In Group B, there was significant difference between one year postoperatively and before operation, and the Singh Index one year after the operation showed better result than that before operation (P< 0.05 ). One year after operation, there was significant difference in the function of injured hip joints between Group A and Group B (P< 0.05 ). Conclusions: Hip fracture in old people should be treated comprehensively according to its internal characteristics, osteoporosis.展开更多
基金Supported by the National Institute of Fisheries Science(No.R2015041)
文摘In order to determine the effect of twine thickness on the size-selectivity of the driftnet used for the yellow croaker, size-selectivity tests were conducted with three different twine thicknesses(monofi lament diameters of 0.279 mm(number's method; No. 3), 0.321 mm(No. 4), and 0.360 mm(No. 5)) of driftnets for the yellow croaker in the seas around Chooja-do, Jeju Islands. The selectivity curve was estimated by using Kitahara's method. In order to determine the physical properties of the twine used in the experimental fi shing nets, we measured the breaking load, elongation, and stiffness under both dry and wet conditions. In terms of physical properties, the thinnest twine(No. 3) had the strongest breaking strength per unit cross-sectional area, along with good elongation and excellent fl exibility. The thickest twine(No. 5) had the lowest fl exibility. In terms of selectivity, the net of No. 3 twine showed the broadest selection range and, thus, a relatively low selectivity compared with the other nets, while the less fl exible net of No. 5 twine showed the narrowest selectivity range and high selectivity. In addition, it was found that a thicker twine resulted in a smaller haul of small fi sh. Therefore, it can be inferred that the thickness of the twine affects the size of the catch and selectivity, and thus the size composition of the catch as well.
文摘Although Brazil has a long history of having insider trading laws （IT laws） in place and became the first emerging country to enforce the IT laws （Bhattacharya ＆ Daouk, 2002）, criminal sanctions and hefty monetary penalties were only made possible by the amendment of its laws against IT on October 31, 2001. We study the stock price effects of merger announcements made by 151 firms over two periods, before and after the change of IT laws. Our empirical results suggest that target firms attained positive price run-ups in pre-announcement windows before, but not after, the legal regime change. While acquiring firms had strong positive pre-announcement reactions in both legal regimes, the abnormal returns （AR） decreased in the more stringent legal regime. These results indicate that more stringent IT laws may deter IT and improve market efficiency in an emerging country.
文摘Objective： To observe the clinical efficacy of puncturing lumbar acupoints in treating knee joint pain. Methods： Thirty-seven patients suffered from knee joint pain were treated by puncturing lumbar acupoints combined with cupping therapy. Visual Analog Scale （VAS） was scored before and after the first treatment as well as the second treatment. Result： Before treatment, VAS score was 5.3±1.2. After the first treatment, VAS score descended to 1.9±0.8. Before the second treatment, VAS score was 2.1±0.7. After the second treatment, VAS score descended to 0.7±0.6. Conclusion： Puncturing lumbar acupoints is quite effective in treating knee joint pain caused by lumbar diseases.
文摘Objective: To observe the effect of comprehensive treatment for hip fracture in old people. Methods: Three hundred and seventy two old patients with hip fractures were randomly divided into two groups, Group A and Group B. Cases in Group A were treated only by operations. Cases in Group B received comprehensive treatment. The Singh Indexes of both uninjured and injured femoral necks were used to judge the osteoporosis levels before operation and one year after the operation. The function of injured hip joints was evaluated one year postoperatively. Results: Complications occurred in 36.56 % of the cases in Group A and 5.91 % of Group B. One year postoperatively, the Singh Index degree distributions of both uninjured and injured femoral necks in Group A had no significant difference compared with those before the operation (P> 0.05 ). In Group B, there was significant difference between one year postoperatively and before operation, and the Singh Index one year after the operation showed better result than that before operation (P< 0.05 ). One year after operation, there was significant difference in the function of injured hip joints between Group A and Group B (P< 0.05 ). Conclusions: Hip fracture in old people should be treated comprehensively according to its internal characteristics, osteoporosis.
