本文提出了一种解决 ALV(Autonomous Land Vehicle)越野路径规划的新途径——领域式规划法.介绍了一种面向地形本身分布特点和性质的地形分割方法,讨论了领域式规划空间的二叉树表示方法.在此基础上,提出了采用虚拟矩阵匹配搜索二叉树...本文提出了一种解决 ALV(Autonomous Land Vehicle)越野路径规划的新途径——领域式规划法.介绍了一种面向地形本身分布特点和性质的地形分割方法,讨论了领域式规划空间的二叉树表示方法.在此基础上,提出了采用虚拟矩阵匹配搜索二叉树以确定领域式规划空间中邻接关系的方法,并描述了启发式方法和概率方法相结合的路径搜索算法.领域式规划方法有效地解决了非结构化环境中的规划效率问题.展开更多
A new singularity extraction technique is presented to calculate accurately the singular integrals in Time Domain Electric Field Integral Equation (TDEFIE).In singularity extraction pro- cedure,through the aid of the ...A new singularity extraction technique is presented to calculate accurately the singular integrals in Time Domain Electric Field Integral Equation (TDEFIE).In singularity extraction pro- cedure,through the aid of the first order Taylor series of time base function including time-retardation,the singularity of the integrand can be removed.The surface current density and backscattered far-field response of a conducting cube illuminated by a Gaussian plane wave is com- puted using the presented technique.Comparisons are made with the results obtained by the Inverse Discrete Fourier Transform (IDFT) of the frequency domain and the results obtained by using Ve- chinski's time averaging technique,which demonstrate that the presented method with this new time domain singularity extraction technique to solve TDEFIE is very accurate and stable.展开更多
In this paper, we introduce the reduced matrix in kq representation and provide the reduced matrix elements of a projection operator P on the rational noncommutative orbifold T^2/Z_4.we give the closed form for the pr...In this paper, we introduce the reduced matrix in kq representation and provide the reduced matrix elements of a projection operator P on the rational noncommutative orbifold T^2/Z_4.we give the closed form for the projector by Jacobi elliptical functions. Since projectors correspond to soliton solutions of the field theory on the noncommutative orbifold, we thus present a corresponding soliton solution.展开更多
The transient critical boundary of dynamic security region (DSR) can be approximated by a few hyper planes correlated with instability separation modes. A method to fast predict instability separation modes is propose...The transient critical boundary of dynamic security region (DSR) can be approximated by a few hyper planes correlated with instability separation modes. A method to fast predict instability separation modes is proposed for DSR calculation in power injection space. The method identifies coherent generation groups by the developed K-medoids algorithm, taking a similarity matrix derived from the reachability Grammian as the index. As an experimental result, reachability Grammian matrices under local injections are approximately invariant. It indicates that the generator coherency identifications are nearly consistent for different injections. Then instability separation modes can be predicted at the normal operating point, while average initial acceleration is considered as the measure of the critical generator group to amend the error. Moreover, based on these predicted instability separation modes, a critical point search strategy for DSR calculation is illustrated in the reduced injection space of the critical generators. The proposed method was evaluated using New England Test System, and the computation accuracy and speed in determining the practical DSR were improved.展开更多
Entanglement properties of two-mode squeezed coherent states in the radiation field ＆re investigated according to the entanglement criterion [Phys. Rev. Lett. 84 （2000） 2722]. The dependence of entanglement on sque...Entanglement properties of two-mode squeezed coherent states in the radiation field ＆re investigated according to the entanglement criterion [Phys. Rev. Lett. 84 （2000） 2722]. The dependence of entanglement on squeeze angle and squeeze parameter is discussed. It shows that the system evolves into entangled states and entanglement does not increase persistently with the increase of squeeze angle and squeeze parameter. There only exists a certain squeeze angle in which the entanglement exists continuously.展开更多
Although there are differences between philosophers and mystics in principles and methods, Islamic philosophers and their reading of the philosophy of the ancient Greece have been very influential on Islamic mysticism...Although there are differences between philosophers and mystics in principles and methods, Islamic philosophers and their reading of the philosophy of the ancient Greece have been very influential on Islamic mysticism. This influence is in three realms of ontology--man＇s relation with God and the way of proving and conveying mystical findings. In ontological realm, the main aim of the Islamic mysticism is recognition of God＇s essence in respect to His names and attributes in order to reach Him. Although they believe in unity of being and regard the created world as God＇s manifestation and do not consider independent existence for it, mystics have not neglected ontology They deal with issues such as gradation and hierarchy of being, the world of intellects, the world of ideas, and separation of essence from existence because of the influence of philosophy. In the realm of man＇s relation with God, there is a love relationship between the Creator and the creature resulting in a fascination based movement due to being attracted to the beauty of Absolute perfection-God-in lower states. Theoretical elucidation of this perfectionist movement and its phases has been under the influence of philosophical opinions suggested by Aristotle, Plotinus, and Sohrevardi. For proving and conveying mystical findings, mystics were usually condemned since their perception was intuitive, personal, and nontransferable. However, Ibn Arabi＇s endeavor in using logical reasoning helped Islamic mysticism to release its spiritual findings from being confined to a personal account and conveying them to others through an assured way; consequently, mysticism introduced itself as a system and a science.展开更多
Tensions between Western and Islamic traditions are very fierce in evidence currently. Many see the two systems as irreconcilable and the conflict between the two as inevitable （Huntingdon ＆ Berger, 2002）. This pap...Tensions between Western and Islamic traditions are very fierce in evidence currently. Many see the two systems as irreconcilable and the conflict between the two as inevitable （Huntingdon ＆ Berger, 2002）. This paper argues if reconcilability between Islam and the West exists in the field of finance and if the two systems can co-evolve in a mutually productive way, then, the author can be optimistic about the ability of the two systems to co-exist. Clearly, they involve different attitudes, but this paper argues on the basis of significant compatibility issues that these are resolvable under the tradition of tolerance that has existed in Western and Islamic societies. The context chosen for this analysis is finance which is central to global capitalism and is an area in which key differences of principle and practice exist between Islam and the West.展开更多
An integrated hydrological model has been applied for a rural-urban catchment of the Szamos-Kraszna interfluve geographic area, using the WateRisk integrated hydrological model system. The aim of the hydrological simu...An integrated hydrological model has been applied for a rural-urban catchment of the Szamos-Kraszna interfluve geographic area, using the WateRisk integrated hydrological model system. The aim of the hydrological simulations was to identify the role that the relief plays in the water coverage formation process, and to highlight the possible consequences of it on phosphorus transport processes. To support this aim, the rainfall-runoff and the one-dimensional flow routing modules have been modelled, and maximal water cover has been calculated. Measured water coverage data by remote sensing have been compared to calculated maximum water cover in several ways. Results support the existing perspective on excess water formation namely that the process is very complex, therefore, the coincidence of the locations of measured water cover with calculated maximum water cover based on the DEM （digital elevation model） and the river network is low. Analysis shows that as far as the larger depressions of the area are concerned, the error of the DEM is not high, but it is likely that at locations with small altitude differences, the error of DEM can cause larger errors. The results foreshadow the importance of the micro relief of the area on phosphorus transport.展开更多
In social mammals, kinship is an important factor that often affects the interactions among individuals within groups. In primates that live in a multilevel society, kinship may affect affiliative patterns be- tween i...In social mammals, kinship is an important factor that often affects the interactions among individuals within groups. In primates that live in a multilevel society, kinship may affect affiliative patterns be- tween individuals at different scales within the larger group. For this study, we use field observations and molecular methods to reveal the profiles of how kinship affects affiliative behaviors between indi- viduals in a breeding band of wild golden snub-nosed monkeys （Rhinopithecus roxellana）. We use a novel nonparametric test, the partition Mantel test, to measure independently the correlation between kinship and each of three affiliative behaviors. Our results show that more closely related females are more likely to groom each other. Average relatedness between adult females within the same onemale unit （OMU） is higher than that between adult females from different OMUs. We suggest that closely related females may reside in the same OMU in order to attain inclusive fitness benefits, and that kinship plays an important role in maintaining the social structure of this species.展开更多
文摘本文提出了一种解决 ALV(Autonomous Land Vehicle)越野路径规划的新途径——领域式规划法.介绍了一种面向地形本身分布特点和性质的地形分割方法,讨论了领域式规划空间的二叉树表示方法.在此基础上,提出了采用虚拟矩阵匹配搜索二叉树以确定领域式规划空间中邻接关系的方法,并描述了启发式方法和概率方法相结合的路径搜索算法.领域式规划方法有效地解决了非结构化环境中的规划效率问题.
文摘A new singularity extraction technique is presented to calculate accurately the singular integrals in Time Domain Electric Field Integral Equation (TDEFIE).In singularity extraction pro- cedure,through the aid of the first order Taylor series of time base function including time-retardation,the singularity of the integrand can be removed.The surface current density and backscattered far-field response of a conducting cube illuminated by a Gaussian plane wave is com- puted using the presented technique.Comparisons are made with the results obtained by the Inverse Discrete Fourier Transform (IDFT) of the frequency domain and the results obtained by using Ve- chinski's time averaging technique,which demonstrate that the presented method with this new time domain singularity extraction technique to solve TDEFIE is very accurate and stable.
基金Supported by the Natural Science Foundation of China under Grant Nos. 10575080, 11047025, 11075126 the Project of Knowledge Innovation Program (PKIP) of Chinese Academy of Sciences
文摘In this paper, we introduce the reduced matrix in kq representation and provide the reduced matrix elements of a projection operator P on the rational noncommutative orbifold T^2/Z_4.we give the closed form for the projector by Jacobi elliptical functions. Since projectors correspond to soliton solutions of the field theory on the noncommutative orbifold, we thus present a corresponding soliton solution.
基金Supported by National Natural Science Foundation of China (No.50595413)Special Fund of the National Fundamental Research of China(No.2004CB217904)+4 种基金US EPRI under Agreement EP-P29464/C9966Foundation for the Author of National Excellent Doctoral Disserta-tion (No.200439)Key Project of Ministry of Education of China(No.105047)Program for New Century Excellent Talents in University,Fok Ying Tung Education Foundation (No.104019)Innovation Fund of Tianjin Municipal (2006-09)
文摘The transient critical boundary of dynamic security region (DSR) can be approximated by a few hyper planes correlated with instability separation modes. A method to fast predict instability separation modes is proposed for DSR calculation in power injection space. The method identifies coherent generation groups by the developed K-medoids algorithm, taking a similarity matrix derived from the reachability Grammian as the index. As an experimental result, reachability Grammian matrices under local injections are approximately invariant. It indicates that the generator coherency identifications are nearly consistent for different injections. Then instability separation modes can be predicted at the normal operating point, while average initial acceleration is considered as the measure of the critical generator group to amend the error. Moreover, based on these predicted instability separation modes, a critical point search strategy for DSR calculation is illustrated in the reduced injection space of the critical generators. The proposed method was evaluated using New England Test System, and the computation accuracy and speed in determining the practical DSR were improved.
基金The project supported by National Natural Science Foundation of China under Grant Nos.10174024 and 10474025
文摘Entanglement properties of two-mode squeezed coherent states in the radiation field ＆re investigated according to the entanglement criterion [Phys. Rev. Lett. 84 （2000） 2722]. The dependence of entanglement on squeeze angle and squeeze parameter is discussed. It shows that the system evolves into entangled states and entanglement does not increase persistently with the increase of squeeze angle and squeeze parameter. There only exists a certain squeeze angle in which the entanglement exists continuously.
文摘Although there are differences between philosophers and mystics in principles and methods, Islamic philosophers and their reading of the philosophy of the ancient Greece have been very influential on Islamic mysticism. This influence is in three realms of ontology--man＇s relation with God and the way of proving and conveying mystical findings. In ontological realm, the main aim of the Islamic mysticism is recognition of God＇s essence in respect to His names and attributes in order to reach Him. Although they believe in unity of being and regard the created world as God＇s manifestation and do not consider independent existence for it, mystics have not neglected ontology They deal with issues such as gradation and hierarchy of being, the world of intellects, the world of ideas, and separation of essence from existence because of the influence of philosophy. In the realm of man＇s relation with God, there is a love relationship between the Creator and the creature resulting in a fascination based movement due to being attracted to the beauty of Absolute perfection-God-in lower states. Theoretical elucidation of this perfectionist movement and its phases has been under the influence of philosophical opinions suggested by Aristotle, Plotinus, and Sohrevardi. For proving and conveying mystical findings, mystics were usually condemned since their perception was intuitive, personal, and nontransferable. However, Ibn Arabi＇s endeavor in using logical reasoning helped Islamic mysticism to release its spiritual findings from being confined to a personal account and conveying them to others through an assured way; consequently, mysticism introduced itself as a system and a science.
文摘Tensions between Western and Islamic traditions are very fierce in evidence currently. Many see the two systems as irreconcilable and the conflict between the two as inevitable （Huntingdon ＆ Berger, 2002）. This paper argues if reconcilability between Islam and the West exists in the field of finance and if the two systems can co-evolve in a mutually productive way, then, the author can be optimistic about the ability of the two systems to co-exist. Clearly, they involve different attitudes, but this paper argues on the basis of significant compatibility issues that these are resolvable under the tradition of tolerance that has existed in Western and Islamic societies. The context chosen for this analysis is finance which is central to global capitalism and is an area in which key differences of principle and practice exist between Islam and the West.
文摘An integrated hydrological model has been applied for a rural-urban catchment of the Szamos-Kraszna interfluve geographic area, using the WateRisk integrated hydrological model system. The aim of the hydrological simulations was to identify the role that the relief plays in the water coverage formation process, and to highlight the possible consequences of it on phosphorus transport processes. To support this aim, the rainfall-runoff and the one-dimensional flow routing modules have been modelled, and maximal water cover has been calculated. Measured water coverage data by remote sensing have been compared to calculated maximum water cover in several ways. Results support the existing perspective on excess water formation namely that the process is very complex, therefore, the coincidence of the locations of measured water cover with calculated maximum water cover based on the DEM （digital elevation model） and the river network is low. Analysis shows that as far as the larger depressions of the area are concerned, the error of the DEM is not high, but it is likely that at locations with small altitude differences, the error of DEM can cause larger errors. The results foreshadow the importance of the micro relief of the area on phosphorus transport.
文摘In social mammals, kinship is an important factor that often affects the interactions among individuals within groups. In primates that live in a multilevel society, kinship may affect affiliative patterns be- tween individuals at different scales within the larger group. For this study, we use field observations and molecular methods to reveal the profiles of how kinship affects affiliative behaviors between indi- viduals in a breeding band of wild golden snub-nosed monkeys （Rhinopithecus roxellana）. We use a novel nonparametric test, the partition Mantel test, to measure independently the correlation between kinship and each of three affiliative behaviors. Our results show that more closely related females are more likely to groom each other. Average relatedness between adult females within the same onemale unit （OMU） is higher than that between adult females from different OMUs. We suggest that closely related females may reside in the same OMU in order to attain inclusive fitness benefits, and that kinship plays an important role in maintaining the social structure of this species.
