The two one-state-variable, rate- and state-dependent friction laws, i.e., the slip and slowness laws, are com- pared on the basis of dynamical behavior of a one-degree-of-freedom spring-slider model through numerical...The two one-state-variable, rate- and state-dependent friction laws, i.e., the slip and slowness laws, are com- pared on the basis of dynamical behavior of a one-degree-of-freedom spring-slider model through numerical simulations. Results show that two （normalized） model parameters, i.e., A （the normalized characteristic slip distance） and β-α （the difference in two normalized parameters of friction laws）, control the solutions. From given values of △, β, and α, for the slowness laws, the solution exists and the unique non-zero fixed point is stable when △〉（β-α）, yet not when △ 〈（β-α）. For the slip law, the solution exists for large ranges of model parameters and the number and stability of the non-zero fixed points change from one case to another. Results suggest that the slip law is more appropriate for controlling earthquake dynamics than the slowness law.展开更多
Background:This study systematically synthesized and quantified the relationship linking state laws governing school physical education(PE)to PE attendance and physical activity(PA)in class and throughout the day and ...Background:This study systematically synthesized and quantified the relationship linking state laws governing school physical education(PE)to PE attendance and physical activity(PA)in class and throughout the day and week among students in the USA.Methods:A keyword search was performed in PubMed,Web of Science,Cumulative Index to Nursing and Allied Health Literature(CINAHL),Academic Search Complete,and EconLit.Meta-analyses were performed to estimate the effects of state PE laws.Results:A total of 17 studies were included in the review,and five contributed to the meta-analyses.A total of 8 studies used nationally representative school-or student-level data,three focused on multiple states,and the remaining six examined the PE laws of a single state.The presence and strength of state PE laws were positively associated with PE attendance and the frequency and duration of PA during PE classes and throughout the school day.Compared to those residing in states with weak or no PE laws,students in states with strong PE laws had an additional 0.2 days(95%confidence interval(95%CI):0.10.4)of PE attendance per week and spent an additional 33.9 min(95%CI:22.745.0)participating PE classes per week.State PE laws affected girls’PA more than boys’.Different aspects of state PE laws tended to affect students’PE attendance differently.Disparities in the implementation of state PE laws existed across schools.Conclusion:Future studies should adopt objective measures on PE and PA participation and examine the roles schools and districts play in mediating the effect of state PE laws on students’PE attendance and PA.展开更多
Abortion is the knowing destruction of the life of an unborn child in the womb other than for the principal purpose of producing a life birth or removal of a dead tissue. The Nigeria law stipulates that abortion is al...Abortion is the knowing destruction of the life of an unborn child in the womb other than for the principal purpose of producing a life birth or removal of a dead tissue. The Nigeria law stipulates that abortion is allowed only where there is risk to the life of the woman and or to her physical or mental health. This study is aimed at determining the perception of abortion and the relevant laws by lawyers in Anambra State, Nigeria. It is a descriptive cross sectional study carried out between May-June 2010 using pre-tested self administered questionnaires to collect data from consenting 200 lawyers in the 3 major towns of Anambra State. All the respondents knew about abortion, recognized health hazards associated with it and mentioned infertility as the major complication of abortion (53%) followed by death (52.5%) and bleeding (42.5%). About 80% of respondents said abortion should be allowed in cases of danger to woman’s life, rape or incest. Eighty-five percent of the lawyers were aware of the existing abortion law in Nigeria and 76.5% of this knew abortion was legal only to save the life of the woman. Only 26% were in support of legalization of abortion. The Lawyers recommended health education and family planning, among others as means of preventing abortion and its complications. Stigma associated with abortion should be removed to improve free reporting of abortion cases for legal actions. Further research should involve other stakeholders on abortion to make for a holistic approach to the problem.展开更多
Based upon the theory of the nonlinear quadric two-person nonzero-sum differential game,the fact that the time-limited mixed H2/H∞ control problem can be turned into the problem of solving the state feedback Nash bal...Based upon the theory of the nonlinear quadric two-person nonzero-sum differential game,the fact that the time-limited mixed H2/H∞ control problem can be turned into the problem of solving the state feedback Nash balance point is mentioned. Upon this,a theorem about the solution of the state feedback control is given,the Lyapunov stabilization of the nonlinear system under this control is proved,too. At the same time,this solution is used to design the nonlinear H2/H∞ guidance law of the relative motion between the missile and the target in three-dimensional(3D) space. By solving two coupled Hamilton-Jacobi partial differential inequalities(HJPDI),a control with more robust stabilities and more robust performances is obtained. With different H∞ performance indexes,the correlative weighting factors of the control are analytically designed. At last,simulations under different robust performance indexes and under different initial conditions and under the cases of intercepting different maneuvering targets are carried out. All results indicate that the designed law is valid.展开更多
This study is seeking an answer as to whether the efficient state and the state under the rule of law are indeed irreconcilable, as well as to whether these two categories are by nature to be seen as contrary concepts...This study is seeking an answer as to whether the efficient state and the state under the rule of law are indeed irreconcilable, as well as to whether these two categories are by nature to be seen as contrary concepts. The basic issue is whether efficiency is to be handled as an ＂extralegal＂ category, or whether legal regulation, in accordance with public administration traditions in Europe, can in itself meet the requirement of efficiency. Also the study presents the formation of the issue of conflict between the effective state and the state under the rule of law in Hungary after the election held in 2010 in the practice of economic policy and legislation of the Orban government. We are trying to answer the question of the tendency of power concentration to really menace the principles of a traditionally-formed state under the rule of law, as well as whether the economic policy of the government can be implemented effectively in a strongly centralized political and state administrative system.展开更多
For a long time, Vietnam has modifications in all aspects in the society. For many years, Vietnam has improved features in administrative works as well as in different areas, such as public administration, finance, an...For a long time, Vietnam has modifications in all aspects in the society. For many years, Vietnam has improved features in administrative works as well as in different areas, such as public administration, finance, and accounting In the accounting content, budget accounting is an important thing which is worth noting. However, along with the achievements, Vietnam is also facing a number of limitations to be overcome for ensuring transparency in the state budget. Since then, the main purpose of the article is to provide a general picture of budget accounting in Vietnam and what has not been done through finding the relationships with budget regulations and international public sector accounting. The results showed that Vietnam will transform and issue the new law on budget and build up a new model for controlling information published by data accounting system in the future.展开更多
Reflect on the benefits and costs of the current approaches in the European Union and the People’s Republic of China.To the conclusion that State Owned Enterprises(SOE)’s and more generally state conduct should be f...Reflect on the benefits and costs of the current approaches in the European Union and the People’s Republic of China.To the conclusion that State Owned Enterprises(SOE)’s and more generally state conduct should be fully covered by competition law.展开更多
This article is the continuation of article [1] where the experimental facts of observation of the electroscalar radiation in the spectrum of the Sun have been presented [2]. This radiation comes into the world having...This article is the continuation of article [1] where the experimental facts of observation of the electroscalar radiation in the spectrum of the Sun have been presented [2]. This radiation comes into the world having a long wavelength, being longitudinal and extraordinarily penetrating. In accordance with the principle of least action, the Lagrangian of the electroscalar field and the tensor of energy-moment are determined using the variation the potential and coordinates. The equation of motion the charged particle in electroscalar field is determined and the energy of particle has the negative sign with respect to the mechanical energy of particle and the energy of electromagnetic field. So, this is decreasing the electrical potential of particle during the propagation. The electroscalar energy of charged particle and field’s force acting on the particle during their motion change the particle’s electrical status which, in its turn, may trigger the transition of the particle into a compound state during interaction with any object. Due to the continuity this process can lead the particle to the state which enters into a compound state with a negative energy for a different particle’s velocity. This state is the physical vacuum’s state. Analysis of the solar spectrum demonstrates that scattering and absorption of electroscalar wave go on the cavities of solids. The spreading out of electroscalar field obeys to the law of plane wave and the transfer the energy and information can occur in vacuum and any medium.展开更多
I. Introduction This paper discusses child protection in the United States. I will discuss four general topics. The first topic is United States laws on the protection of children from child abuse and neglect. The se...I. Introduction This paper discusses child protection in the United States. I will discuss four general topics. The first topic is United States laws on the protection of children from child abuse and neglect. The second topic is providing care for children who must be removed from their homes. The third is the role of courts in child protection in the United States.展开更多
基金supported by Academia Sinica (Taipei) and Science Council (Grant NSC96-2116-M-001-012-MY3).
文摘The two one-state-variable, rate- and state-dependent friction laws, i.e., the slip and slowness laws, are com- pared on the basis of dynamical behavior of a one-degree-of-freedom spring-slider model through numerical simulations. Results show that two （normalized） model parameters, i.e., A （the normalized characteristic slip distance） and β-α （the difference in two normalized parameters of friction laws）, control the solutions. From given values of △, β, and α, for the slowness laws, the solution exists and the unique non-zero fixed point is stable when △〉（β-α）, yet not when △ 〈（β-α）. For the slip law, the solution exists for large ranges of model parameters and the number and stability of the non-zero fixed points change from one case to another. Results suggest that the slip law is more appropriate for controlling earthquake dynamics than the slowness law.
文摘Background:This study systematically synthesized and quantified the relationship linking state laws governing school physical education(PE)to PE attendance and physical activity(PA)in class and throughout the day and week among students in the USA.Methods:A keyword search was performed in PubMed,Web of Science,Cumulative Index to Nursing and Allied Health Literature(CINAHL),Academic Search Complete,and EconLit.Meta-analyses were performed to estimate the effects of state PE laws.Results:A total of 17 studies were included in the review,and five contributed to the meta-analyses.A total of 8 studies used nationally representative school-or student-level data,three focused on multiple states,and the remaining six examined the PE laws of a single state.The presence and strength of state PE laws were positively associated with PE attendance and the frequency and duration of PA during PE classes and throughout the school day.Compared to those residing in states with weak or no PE laws,students in states with strong PE laws had an additional 0.2 days(95%confidence interval(95%CI):0.10.4)of PE attendance per week and spent an additional 33.9 min(95%CI:22.745.0)participating PE classes per week.State PE laws affected girls’PA more than boys’.Different aspects of state PE laws tended to affect students’PE attendance differently.Disparities in the implementation of state PE laws existed across schools.Conclusion:Future studies should adopt objective measures on PE and PA participation and examine the roles schools and districts play in mediating the effect of state PE laws on students’PE attendance and PA.
文摘Abortion is the knowing destruction of the life of an unborn child in the womb other than for the principal purpose of producing a life birth or removal of a dead tissue. The Nigeria law stipulates that abortion is allowed only where there is risk to the life of the woman and or to her physical or mental health. This study is aimed at determining the perception of abortion and the relevant laws by lawyers in Anambra State, Nigeria. It is a descriptive cross sectional study carried out between May-June 2010 using pre-tested self administered questionnaires to collect data from consenting 200 lawyers in the 3 major towns of Anambra State. All the respondents knew about abortion, recognized health hazards associated with it and mentioned infertility as the major complication of abortion (53%) followed by death (52.5%) and bleeding (42.5%). About 80% of respondents said abortion should be allowed in cases of danger to woman’s life, rape or incest. Eighty-five percent of the lawyers were aware of the existing abortion law in Nigeria and 76.5% of this knew abortion was legal only to save the life of the woman. Only 26% were in support of legalization of abortion. The Lawyers recommended health education and family planning, among others as means of preventing abortion and its complications. Stigma associated with abortion should be removed to improve free reporting of abortion cases for legal actions. Further research should involve other stakeholders on abortion to make for a holistic approach to the problem.
基金Sponsored by the National Natural Science Foundation of China (Grant No.90716028)
文摘Based upon the theory of the nonlinear quadric two-person nonzero-sum differential game,the fact that the time-limited mixed H2/H∞ control problem can be turned into the problem of solving the state feedback Nash balance point is mentioned. Upon this,a theorem about the solution of the state feedback control is given,the Lyapunov stabilization of the nonlinear system under this control is proved,too. At the same time,this solution is used to design the nonlinear H2/H∞ guidance law of the relative motion between the missile and the target in three-dimensional(3D) space. By solving two coupled Hamilton-Jacobi partial differential inequalities(HJPDI),a control with more robust stabilities and more robust performances is obtained. With different H∞ performance indexes,the correlative weighting factors of the control are analytically designed. At last,simulations under different robust performance indexes and under different initial conditions and under the cases of intercepting different maneuvering targets are carried out. All results indicate that the designed law is valid.
文摘This study is seeking an answer as to whether the efficient state and the state under the rule of law are indeed irreconcilable, as well as to whether these two categories are by nature to be seen as contrary concepts. The basic issue is whether efficiency is to be handled as an ＂extralegal＂ category, or whether legal regulation, in accordance with public administration traditions in Europe, can in itself meet the requirement of efficiency. Also the study presents the formation of the issue of conflict between the effective state and the state under the rule of law in Hungary after the election held in 2010 in the practice of economic policy and legislation of the Orban government. We are trying to answer the question of the tendency of power concentration to really menace the principles of a traditionally-formed state under the rule of law, as well as whether the economic policy of the government can be implemented effectively in a strongly centralized political and state administrative system.
文摘For a long time, Vietnam has modifications in all aspects in the society. For many years, Vietnam has improved features in administrative works as well as in different areas, such as public administration, finance, and accounting In the accounting content, budget accounting is an important thing which is worth noting. However, along with the achievements, Vietnam is also facing a number of limitations to be overcome for ensuring transparency in the state budget. Since then, the main purpose of the article is to provide a general picture of budget accounting in Vietnam and what has not been done through finding the relationships with budget regulations and international public sector accounting. The results showed that Vietnam will transform and issue the new law on budget and build up a new model for controlling information published by data accounting system in the future.
文摘Reflect on the benefits and costs of the current approaches in the European Union and the People’s Republic of China.To the conclusion that State Owned Enterprises(SOE)’s and more generally state conduct should be fully covered by competition law.
文摘This article is the continuation of article [1] where the experimental facts of observation of the electroscalar radiation in the spectrum of the Sun have been presented [2]. This radiation comes into the world having a long wavelength, being longitudinal and extraordinarily penetrating. In accordance with the principle of least action, the Lagrangian of the electroscalar field and the tensor of energy-moment are determined using the variation the potential and coordinates. The equation of motion the charged particle in electroscalar field is determined and the energy of particle has the negative sign with respect to the mechanical energy of particle and the energy of electromagnetic field. So, this is decreasing the electrical potential of particle during the propagation. The electroscalar energy of charged particle and field’s force acting on the particle during their motion change the particle’s electrical status which, in its turn, may trigger the transition of the particle into a compound state during interaction with any object. Due to the continuity this process can lead the particle to the state which enters into a compound state with a negative energy for a different particle’s velocity. This state is the physical vacuum’s state. Analysis of the solar spectrum demonstrates that scattering and absorption of electroscalar wave go on the cavities of solids. The spreading out of electroscalar field obeys to the law of plane wave and the transfer the energy and information can occur in vacuum and any medium.
文摘I. Introduction This paper discusses child protection in the United States. I will discuss four general topics. The first topic is United States laws on the protection of children from child abuse and neglect. The second topic is providing care for children who must be removed from their homes. The third is the role of courts in child protection in the United States.
