Adult male rats were treated orally with monomer T_4(Tripchlorolide) isolated from Tripterygium wilfordii, at the dose of 50μg/kg/day,6 days/week for6 weeks.Ultrathin section and freeze etching replica of seminifero...Adult male rats were treated orally with monomer T_4(Tripchlorolide) isolated from Tripterygium wilfordii, at the dose of 50μg/kg/day,6 days/week for6 weeks.Ultrathin section and freeze etching replica of seminiferous tubules and epididymal spermatozoa were examined with elec-tron microscope. The results showed that the spemiogenesis was inhibited T_4 in seminiferous tu-bules. However,the damage and disruption of the spermatozoa were more serious in the epididymis.Damage of the structure and function ot microtubule and microfilament may be the chief reason for sperm damage. Sperm membrane was also very sensitive to the treatiment of monomer T_4.展开更多
[Objective] The aim of this study was to investigate the efficient technique of artificial insemination for silkworm. [Method] Sperms were extracted from bursa copulatrix of female moths mated for 30 min through extru...[Objective] The aim of this study was to investigate the efficient technique of artificial insemination for silkworm. [Method] Sperms were extracted from bursa copulatrix of female moths mated for 30 min through extruding and centrifugal method, and then the semen was injected into other virgin moths with trypsinase. [ Result] A high-effective collection technology of spermatids from silkworm was established successfully, 50 μl semen could be collected by only one person in each hour. The survival rate of spermatids was over 80% in vito after collected from bursa copulatrix, while the obtained semen was quite pure and the average fertilization rate of silkworm was 76,5%. [ Conclusion] The establishment of high-effective semen extraction technique of silkworm provides the technical basis for studies on other related techniques for silkworm sperm.展开更多
As more business is conduced over the Internet, the fair exchange problem assumes increasing importance. However, the problem of multi-party fair exchange has not been studied as widely as the more fundamental problem...As more business is conduced over the Internet, the fair exchange problem assumes increasing importance. However, the problem of multi-party fair exchange has not been studied as widely as the more fundamental problem of 2-party fair exchange. Recently, Franklin arid Tsudik proposed two protocols for n-party multi-item exchange on FC'98, SUCEX-1 and SUCES-2. This paper first gives an attack on the proposed protocol SUCEX-1, then presents two protocols for multi-item exchange, one is an improved protocol of SUCEX-1, another is the extension of protocol SUCEX-2.展开更多
Using the technique of integration within an ordered product （IWOP） of operators we construct intermediate coordinate-momentum representation, with which we build a type of operator Fredholm integration equation tha...Using the technique of integration within an ordered product （IWOP） of operators we construct intermediate coordinate-momentum representation, with which we build a type of operator Fredholm integration equation that is an operator generalization of the solution of thermo conduction equation. Then we seach for the solution of operator Fredholm integration equations, which provides us with a new approach for deriving some operator identities.展开更多
In the literature about mesoscopic Josephson devices the magnetic flux is considered as an operator, the fundamental commutative relation between the magnetic flux operator and the Cooper-pair charge operator is usual...In the literature about mesoscopic Josephson devices the magnetic flux is considered as an operator, the fundamental commutative relation between the magnetic flux operator and the Cooper-pair charge operator is usually preengaged. In this paper we show that such a relation can be deduced from the basic Bose operators＇ commutative relation through the entangled state representation. The Faraday formula in bosonic form is then equivalent to the second Josephson equation. The current operator equation for LC mesoscopic circuit is also derived.展开更多
Nearly all countries have seed organisations and private seed companies, laws and technical regulations to govern their while the role of the farmers＇ seed system has formal seed system, run by formal public been mar...Nearly all countries have seed organisations and private seed companies, laws and technical regulations to govern their while the role of the farmers＇ seed system has formal seed system, run by formal public been marginalised especially in developed countries. Local traditional varieties that are largely taken care of and nurtured by farmers＇ seed system have also been excluded from the formal seed system. Nowadays, however, it is quite common to see locally-sourced vegetables on supermarket shelves, while an increasing number of consumers visit farmers＇ market and become aware of local traditional vegetables available only through such channels. It is in this context that many local governments, public agricultural experimental stations and even private seed companies are becoming interested in the use and management of local traditional varieties of vegetables in Japan. The objective of this paper is to elucidate some characteristics of and factors behind the condition, potentiality and limitations of farmers＇ seed systems vis-a-vis the expected role of public experimental stations and locally-based seed companies, especially when it comes to the use and management of local traditional vegetables and their genetic resources in Japan. This paper is based on our case studies, in which we conducted in some interviews with relevant local actors in addition to literature and statistical surveys.展开更多
Quantum cryptography and quantum search algorithm are considered as two important research topics in quantum information science.An asymmetrical quantum encryption protocol based on the properties of quantum one-way f...Quantum cryptography and quantum search algorithm are considered as two important research topics in quantum information science.An asymmetrical quantum encryption protocol based on the properties of quantum one-way function and quantum search algorithm is proposed.Depending on the no-cloning theorem and trapdoor one-way functions of the publickey,the eavesdropper cannot extract any private-information from the public-keys and the ciphertext.Introducing key-generation randomized logarithm to improve security of our proposed protocol,i.e.,one privatekey corresponds to an exponential number of public-keys.Using unitary operations and the single photon measurement,secret messages can be directly sent from the sender to the receiver.The security of the proposed protocol is proved that it is informationtheoretically secure.Furthermore,compared the symmetrical Quantum key distribution,the proposed protocol is not only efficient to reduce additional communication,but also easier to carry out in practice,because no entangled photons and complex operations are required.展开更多
The main objective of this research was to study the pattern and suggestion in ICT usage of tourism business in Chiang Mai. One hundred ninety questionnaires, referred from ICT usage pattern in organization which was ...The main objective of this research was to study the pattern and suggestion in ICT usage of tourism business in Chiang Mai. One hundred ninety questionnaires, referred from ICT usage pattern in organization which was divided into three sections： office work, communication/contacts and public relation/advertising, were gathered from tourism business in four districts in Chiang Mai. Results showed that of the tourism business only 54.7% have their own websites. Using ICT for public relations and advertisement purpose, hotel/accommodation was the highest users with majority as 29.3%; followed by tour operator with majority as 26.3%; transportation and souvenir was the lowest number of users with minority as 50.0% and 25.0%. For communication purpose hotel/accommodation business and tour operator business were high users with majority as 56.1% and 43.4% followed by restaurant business as moderate user with majority as 50.0%; and transportation business as the lowest user with minority as 31.1%. The paper suggested to owners of tourism businesses the following： （1） training on ICT application; （2） setting up center of tourism information; （3） low cost of intemet requirement from small tourism business because they lack technical person on ICT usage. Both the local and national governments should have important roles in supporting the small and medium tourism enterprises by providing good public facilities, technical expertise and easy information access.展开更多
A multinational corporation （MNC） should have its foreign subsidiaries become more competitive so that it can better compete globally and grow. Managing foreign subsidiary＇s competitiveness is vital for overall, lo...A multinational corporation （MNC） should have its foreign subsidiaries become more competitive so that it can better compete globally and grow. Managing foreign subsidiary＇s competitiveness is vital for overall, long-term, and global organizational growth. Strategic global leadership, vision, and culture among the top managers of headquarters and foreign subsidiaries are vital for enabling the subsidiaries to pursue their vision of improved competitiveness. Sustained growth and improved competitiveness in the global organization＇s multiple country environments then become the means for an MNC＇s overall strategic enhancement.展开更多
The objective of this research was to develop the causal relationship model of firm characteristics factors and good corporate governance affecting the performance of the companies listed on the Stock Exchange of Thai...The objective of this research was to develop the causal relationship model of firm characteristics factors and good corporate governance affecting the performance of the companies listed on the Stock Exchange of Thailand. The developed model consisted of three latent variables and eight observable variables. The sample of this study was 338 companies listed on the Stock Exchange of Thailand. Data are from annual reports （form-56）, annual financial statements and notes to the fmancial statements during the years 2010-2013. The statistics used in this study were descriptive statistics. The causal model was analyzed through a path analysis with LISREL 8.80 Student Edition. The results showed as follows. By testing the consistence of the causal model of finn characteristics （CHA）, the assumed model was consistent with empirical data. Based on the statistical test, the Chi-Square was 22.08. The statistical probability （p） was 0.077, the degree of freedom （dO was to 0, 2/2 was 1.58, RMSEA was 0.041, SRMR was 0.037, GFI was 0.98, CFI was 0.99, AGFI was 0.96. The latent variable of firm characteristics （CHA） had directly negative impact on performance （PAL） with a statistical significance level of 0.01. A path coefficient was 0.18. However, CHA variable did not indirectly influence performance （PAL） and it had directly negative impact on good corporate governance （GGN） with a path coefficient of 0.02 without statistical significance level. The latent variable of good corporate governance （GGN） had directly positive impact on the performance （PAL） with a statistical significance level of 0.05, with a path coefficient of 0.18.展开更多
文摘Adult male rats were treated orally with monomer T_4(Tripchlorolide) isolated from Tripterygium wilfordii, at the dose of 50μg/kg/day,6 days/week for6 weeks.Ultrathin section and freeze etching replica of seminiferous tubules and epididymal spermatozoa were examined with elec-tron microscope. The results showed that the spemiogenesis was inhibited T_4 in seminiferous tu-bules. However,the damage and disruption of the spermatozoa were more serious in the epididymis.Damage of the structure and function ot microtubule and microfilament may be the chief reason for sperm damage. Sperm membrane was also very sensitive to the treatiment of monomer T_4.
文摘[Objective] The aim of this study was to investigate the efficient technique of artificial insemination for silkworm. [Method] Sperms were extracted from bursa copulatrix of female moths mated for 30 min through extruding and centrifugal method, and then the semen was injected into other virgin moths with trypsinase. [ Result] A high-effective collection technology of spermatids from silkworm was established successfully, 50 μl semen could be collected by only one person in each hour. The survival rate of spermatids was over 80% in vito after collected from bursa copulatrix, while the obtained semen was quite pure and the average fertilization rate of silkworm was 76,5%. [ Conclusion] The establishment of high-effective semen extraction technique of silkworm provides the technical basis for studies on other related techniques for silkworm sperm.
基金National Natural Science Foundation of China under Grant Nos.10371070 and 10671121the Foundation of Shanghai Education Committee for Shanghai Prospective Excellent Young Teachers,the Youth Foundation of Shanghai Education Committee,and Magnolia Grant of Shanghai Sciences and Technology Committee
文摘Some general formulas in the Sato theory related to the nonisospectral KP and mKP hierarchies are derived for simplifying calculations.
基金Supported by the National Natural Science Foundation of China(No.60173032,No.69973031)
文摘As more business is conduced over the Internet, the fair exchange problem assumes increasing importance. However, the problem of multi-party fair exchange has not been studied as widely as the more fundamental problem of 2-party fair exchange. Recently, Franklin arid Tsudik proposed two protocols for n-party multi-item exchange on FC'98, SUCEX-1 and SUCES-2. This paper first gives an attack on the proposed protocol SUCEX-1, then presents two protocols for multi-item exchange, one is an improved protocol of SUCEX-1, another is the extension of protocol SUCEX-2.
基金The project supported by the President Foundation of the Chinese Academy of Sciences
文摘Using the technique of integration within an ordered product （IWOP） of operators we construct intermediate coordinate-momentum representation, with which we build a type of operator Fredholm integration equation that is an operator generalization of the solution of thermo conduction equation. Then we seach for the solution of operator Fredholm integration equations, which provides us with a new approach for deriving some operator identities.
基金The project supported by National Natural Science Foundation of China under Grant No. 10574060
文摘In the literature about mesoscopic Josephson devices the magnetic flux is considered as an operator, the fundamental commutative relation between the magnetic flux operator and the Cooper-pair charge operator is usually preengaged. In this paper we show that such a relation can be deduced from the basic Bose operators＇ commutative relation through the entangled state representation. The Faraday formula in bosonic form is then equivalent to the second Josephson equation. The current operator equation for LC mesoscopic circuit is also derived.
文摘Nearly all countries have seed organisations and private seed companies, laws and technical regulations to govern their while the role of the farmers＇ seed system has formal seed system, run by formal public been marginalised especially in developed countries. Local traditional varieties that are largely taken care of and nurtured by farmers＇ seed system have also been excluded from the formal seed system. Nowadays, however, it is quite common to see locally-sourced vegetables on supermarket shelves, while an increasing number of consumers visit farmers＇ market and become aware of local traditional vegetables available only through such channels. It is in this context that many local governments, public agricultural experimental stations and even private seed companies are becoming interested in the use and management of local traditional varieties of vegetables in Japan. The objective of this paper is to elucidate some characteristics of and factors behind the condition, potentiality and limitations of farmers＇ seed systems vis-a-vis the expected role of public experimental stations and locally-based seed companies, especially when it comes to the use and management of local traditional vegetables and their genetic resources in Japan. This paper is based on our case studies, in which we conducted in some interviews with relevant local actors in addition to literature and statistical surveys.
基金This work was supported in part by the program for Innovation Team Building at Institutions of Higher Education in Chongqing under Grant No.KJTD201310，the Scientific and Technological Research Program of Chongqing Municipal Education Commission of China under Grant KJ120513，Natural Science Foundation Project of CQ CSTC of P.R.China under Grant No.cstc2011jjA40031
文摘Quantum cryptography and quantum search algorithm are considered as two important research topics in quantum information science.An asymmetrical quantum encryption protocol based on the properties of quantum one-way function and quantum search algorithm is proposed.Depending on the no-cloning theorem and trapdoor one-way functions of the publickey,the eavesdropper cannot extract any private-information from the public-keys and the ciphertext.Introducing key-generation randomized logarithm to improve security of our proposed protocol,i.e.,one privatekey corresponds to an exponential number of public-keys.Using unitary operations and the single photon measurement,secret messages can be directly sent from the sender to the receiver.The security of the proposed protocol is proved that it is informationtheoretically secure.Furthermore,compared the symmetrical Quantum key distribution,the proposed protocol is not only efficient to reduce additional communication,but also easier to carry out in practice,because no entangled photons and complex operations are required.
文摘The main objective of this research was to study the pattern and suggestion in ICT usage of tourism business in Chiang Mai. One hundred ninety questionnaires, referred from ICT usage pattern in organization which was divided into three sections： office work, communication/contacts and public relation/advertising, were gathered from tourism business in four districts in Chiang Mai. Results showed that of the tourism business only 54.7% have their own websites. Using ICT for public relations and advertisement purpose, hotel/accommodation was the highest users with majority as 29.3%; followed by tour operator with majority as 26.3%; transportation and souvenir was the lowest number of users with minority as 50.0% and 25.0%. For communication purpose hotel/accommodation business and tour operator business were high users with majority as 56.1% and 43.4% followed by restaurant business as moderate user with majority as 50.0%; and transportation business as the lowest user with minority as 31.1%. The paper suggested to owners of tourism businesses the following： （1） training on ICT application; （2） setting up center of tourism information; （3） low cost of intemet requirement from small tourism business because they lack technical person on ICT usage. Both the local and national governments should have important roles in supporting the small and medium tourism enterprises by providing good public facilities, technical expertise and easy information access.
文摘A multinational corporation （MNC） should have its foreign subsidiaries become more competitive so that it can better compete globally and grow. Managing foreign subsidiary＇s competitiveness is vital for overall, long-term, and global organizational growth. Strategic global leadership, vision, and culture among the top managers of headquarters and foreign subsidiaries are vital for enabling the subsidiaries to pursue their vision of improved competitiveness. Sustained growth and improved competitiveness in the global organization＇s multiple country environments then become the means for an MNC＇s overall strategic enhancement.
文摘The objective of this research was to develop the causal relationship model of firm characteristics factors and good corporate governance affecting the performance of the companies listed on the Stock Exchange of Thailand. The developed model consisted of three latent variables and eight observable variables. The sample of this study was 338 companies listed on the Stock Exchange of Thailand. Data are from annual reports （form-56）, annual financial statements and notes to the fmancial statements during the years 2010-2013. The statistics used in this study were descriptive statistics. The causal model was analyzed through a path analysis with LISREL 8.80 Student Edition. The results showed as follows. By testing the consistence of the causal model of finn characteristics （CHA）, the assumed model was consistent with empirical data. Based on the statistical test, the Chi-Square was 22.08. The statistical probability （p） was 0.077, the degree of freedom （dO was to 0, 2/2 was 1.58, RMSEA was 0.041, SRMR was 0.037, GFI was 0.98, CFI was 0.99, AGFI was 0.96. The latent variable of firm characteristics （CHA） had directly negative impact on performance （PAL） with a statistical significance level of 0.01. A path coefficient was 0.18. However, CHA variable did not indirectly influence performance （PAL） and it had directly negative impact on good corporate governance （GGN） with a path coefficient of 0.02 without statistical significance level. The latent variable of good corporate governance （GGN） had directly positive impact on the performance （PAL） with a statistical significance level of 0.05, with a path coefficient of 0.18.
