For everybody, the house or the accommodation (and its environment) is a secure place, a haven space, which protects people from constraints of the everyday life. Unfortunately, and more or less everywhere in the th...For everybody, the house or the accommodation (and its environment) is a secure place, a haven space, which protects people from constraints of the everyday life. Unfortunately, and more or less everywhere in the third world, accommodation is for a great number of people a source of stress caused by daily obligations that people have to deal with. In Algeria, the majority of the high-rise collective housing estates through the country offers all the ingredients of a constrained urban environment for the inhabitants. For the most of the population, the accommodation appears as a vital need rather than a negotiable good. As a matter of fact, in the third world in general and particularly in Algeria, most of people live in communities where there is a shortage of accommodation and in which the social housing and its environment are often below the standards. Constructed on policies and a conception of housing which does not integrate at all the criteria of the sustainable development, millions of fiats have already been built. Millions are going to be built in the future, and will be of high-rise collective type. As underlined in this paper, it seems reasonable to think that such a degraded built environment will be unfavorable to the inhabitants and will have a negative impact on both their mental and physical health. The attempt is to demonstrate that there are evidences according to which the housing conditions, inside and outside the accommodation, contribute to create psychological distress and physiological diseases.展开更多
Land subsidence is a complex geological phenomenon which is concerned by the researchers at home and abroad. In this paper,the observation data from Anshan Second Order Leveling during 1987-[KG-*7]-1994,combined with ...Land subsidence is a complex geological phenomenon which is concerned by the researchers at home and abroad. In this paper,the observation data from Anshan Second Order Leveling during 1987-[KG-*7]-1994,combined with the area of environmental engineering geology and geological conditions analysis shows that land subsidence in Anshan City is closely related to active tectonics,Quaternary strata and groundwater exploitation.展开更多
Based on detailed logging of fourteen drill holes, combined with the results of other researchers, the preliminary summarization on sedimentary characteristics of the late Pleistocene of the Fuzhou basin is done. The ...Based on detailed logging of fourteen drill holes, combined with the results of other researchers, the preliminary summarization on sedimentary characteristics of the late Pleistocene of the Fuzhou basin is done. The deposition of Fuzhou basin began from about 56.5ka BP and the sediments are composed of gravel, sand, clay and silt, which show a depositional sequence with granularity becoming smaller from the lower to the upper and a big lateral variation of lithology. There are three silt layers in late Quaternary strata of Fuzhou basin. The first and second layers were developed during the middle and late Holocene, the deposition time is about 7.86ka BP to 1.44 ka BP and they are the results of "Changle Transgression". The third was developed during the late of late Pleistocene and the deposition time is from 44ka BP to 20ka BP and it is the result of "Fuzhou Transgression". The buried late Quaternary sediments in Fuzhou basin can be divided into upper Pleistocene series and Holocene series, which include four formations from old to new. They are the Longhai formation ( Q3p 1), Dongshan formation (Qhd), Changle formation (Qhc) and Jiangtian formation (Qhj), respectively. The Longhai formation can be divided into three members and belongs to the Pleistocene series, other three formations belong to the Holocene series.展开更多
In this paper, design and construction of a modified cold molybdenum cathode Penning ion source was described. It consists of copper cylindrical anode with two cone ends and two movable cold molybdenum cathodes. The t...In this paper, design and construction of a modified cold molybdenum cathode Penning ion source was described. It consists of copper cylindrical anode with two cone ends and two movable cold molybdenum cathodes. The two cathodes were placed symmetrically at two ends of the anode. The modifications were decrease the length of the cylindrical anode to 4 cm instead of 6 cm, transform the copper emission electrode shape from plate of 40 mm length, 25 mm width and 2 mm thickness to disc of 20 mm diameter and 2 mm thickness and transform the inner uncovered area of the emission electrode from slit of 30 mm length and 10 mm width to disc of 5 mm diameter. The copper emission electrode was placed in the middle of the cylindrical anode and has aperture in the center of different diameters. Faraday cup was placed at different distances from the emission electrode aperture. The electrical discharge and the output ion beam characteristics of the modified ion source were measured at different pressures using argon gas. It was found that the optimum operating conditions of the modified ion source are; anode-cathode distance equal to 6 mm, emission electrode aperture diameter equal to 2.5 mm and emission electrode aperture, Faraday cup distance equals 3 cm. The effect of axial samarium cobalt permanent magnet of intensity equal to 300 Gauss on the discharge characteristics of the ion source was determined.展开更多
Electro-thermal accelerator uses high-voltage arc energy to heat the actuating medium, it being made from low-molecular weight material. Projectile acceleration is achieved by expansion of the actuating medium. Numeri...Electro-thermal accelerator uses high-voltage arc energy to heat the actuating medium, it being made from low-molecular weight material. Projectile acceleration is achieved by expansion of the actuating medium. Numerical method for calculating interior ballistics uses Lagrangian coordinates there the conservation of momentum and the energy balance are solved. A statement of the energy balance reflects the second law of thermodynamics. Lagrangian different grid and scheme for numerical calculation were used. Fully explicit scheme was employed. The solving includes two stability conditions: Courant and shock (artificial viscosity). Numerical results were compared with the experimental research for pressure in the barrel in electro-thermal accelerator.展开更多
Article 4 of the Labor Contract Law lays down the right of the Staff and Workers' Representative Congress (SWRC) to deliberate on the formulation of (intra-enterprise) work regulations, but this has become a "s...Article 4 of the Labor Contract Law lays down the right of the Staff and Workers' Representative Congress (SWRC) to deliberate on the formulation of (intra-enterprise) work regulations, but this has become a "soft" law in judicial practice. The judicial criteria for judging the validity of work regulations are in essence determined by the judge's judgment on their reasonableness. As an important embodiment of Chinese politics, economics and culture, the transformation of the SWRC that accompanied the market economy has not negated its value as an indigenous traditional resource. The SWRC does not just enjoy deliberative rights in the formation of regulations, as clearly specified in constitutional law, but also has rights under the law in local legislation and practice. Hence the system of work regulations is neither a unilateral decision on the part of management nor a contract, but rather an autonomous norm developed through the SWRC mechanism. Given the mandatory nature of Article 4 of the Labor Contract Law, regulations will only be valid after they havegone through a democratic process. The further development of the theory of normative system formation should endow the SWRC with greater rights and integrate it smoothly with the collective contract system to standardize collective labor relations.展开更多
In this paper the concept of first boundary condition (i)(i = 0, 1, 2,…, n) is proposed based on [1], the existence of two times spline interpolant under first boundary condition is proved using constructivity me...In this paper the concept of first boundary condition (i)(i = 0, 1, 2,…, n) is proposed based on [1], the existence of two times spline interpolant under first boundary condition is proved using constructivity method and the uniqueness of the two times spline interpolant under first boundary condition(n) is proved too.展开更多
The melting problem in a semi-infinite region with constant heat flux boundary condition is solved by a semi-expect method and an integral approximate method. Effect of subcooling on the transient solid-liquid interfa...The melting problem in a semi-infinite region with constant heat flux boundary condition is solved by a semi-expect method and an integral approximate method. Effect of subcooling on the transient solid-liquid interface location and surface temperature are also discussed in this paper.展开更多
We prove that for a compact Finsler manifold M with nonnegative weighted Ricci curvature,if its first closed(resp.Neumann)eigenvalue of Finsler-Laplacian attains the sharp lower bound,then M is isometric to a circle(r...We prove that for a compact Finsler manifold M with nonnegative weighted Ricci curvature,if its first closed(resp.Neumann)eigenvalue of Finsler-Laplacian attains the sharp lower bound,then M is isometric to a circle(resp.a segment).Moreover,a lower bound of the first eigenvalue of Finsler-Laplacian with Dirichlet boundary condition is also estimated.These generalize the corresponding results in recent literature.展开更多
We study the performance of space division multiple access (SDMA) under a non-ideal engineering situation. When the SDMA channel is of high inter-layer correlation and the condition number is large, the multiple use...We study the performance of space division multiple access (SDMA) under a non-ideal engineering situation. When the SDMA channel is of high inter-layer correlation and the condition number is large, the multiple user multiple input and multiple output user equipment (MUMIMOUE) grouping should be optimized, and in some cases further dimension-reduction should be applied. As the channel measuring is always non-ideal, we use two methods, feedback mode and non-feedback mode, in terms of performance and overhead. It is proposed that the non-feedback mode is preferable even for some non-reciprocal channels. Prin- ciple analysis and test results are given.展开更多
A fundamental result in the theory of minimal rational curves on projective manifolds is Cartan- Fubini extension theorem proved by Hwang and Mok, which describes the extensibility of biholomorphisms between connected...A fundamental result in the theory of minimal rational curves on projective manifolds is Cartan- Fubini extension theorem proved by Hwang and Mok, which describes the extensibility of biholomorphisms between connected open subsets of two Fano manifolds of Picard number 1 which preserve varieties of minimal rational tangents (VMRT), under a mild geometric assumption on the second fundamental forms of VMRT's. Hong and Mok have developed Cartan-Fubini extension for non-equidimensional holomorphic immersions from a connected open subset of a Pano manifold of Picard number 1 into a uniruled projective manifold, under the assumptions that the map sends VMRT's onto linear sections of VMRT's and it satisfies a mild geometric condition formulated in terms of second fundamental forms on VMRT's. In the current paper, we give a generalization of Hong and Mok's result, under the same condition on second fundamental forms, assuming only that the holomorphic immersions send VMRT's to VMRT's. Our argument is different from Hong and Mok's and is based on the study of natural foliations on the total family of VMRT's. This gives a substantially simpler proof than Hong and Mok's argument.展开更多
文摘For everybody, the house or the accommodation (and its environment) is a secure place, a haven space, which protects people from constraints of the everyday life. Unfortunately, and more or less everywhere in the third world, accommodation is for a great number of people a source of stress caused by daily obligations that people have to deal with. In Algeria, the majority of the high-rise collective housing estates through the country offers all the ingredients of a constrained urban environment for the inhabitants. For the most of the population, the accommodation appears as a vital need rather than a negotiable good. As a matter of fact, in the third world in general and particularly in Algeria, most of people live in communities where there is a shortage of accommodation and in which the social housing and its environment are often below the standards. Constructed on policies and a conception of housing which does not integrate at all the criteria of the sustainable development, millions of fiats have already been built. Millions are going to be built in the future, and will be of high-rise collective type. As underlined in this paper, it seems reasonable to think that such a degraded built environment will be unfavorable to the inhabitants and will have a negative impact on both their mental and physical health. The attempt is to demonstrate that there are evidences according to which the housing conditions, inside and outside the accommodation, contribute to create psychological distress and physiological diseases.
文摘Land subsidence is a complex geological phenomenon which is concerned by the researchers at home and abroad. In this paper,the observation data from Anshan Second Order Leveling during 1987-[KG-*7]-1994,combined with the area of environmental engineering geology and geological conditions analysis shows that land subsidence in Anshan City is closely related to active tectonics,Quaternary strata and groundwater exploitation.
基金The research project was sponsored by the NationalDevelopment and ReformCommission of China (20041138) .
文摘Based on detailed logging of fourteen drill holes, combined with the results of other researchers, the preliminary summarization on sedimentary characteristics of the late Pleistocene of the Fuzhou basin is done. The deposition of Fuzhou basin began from about 56.5ka BP and the sediments are composed of gravel, sand, clay and silt, which show a depositional sequence with granularity becoming smaller from the lower to the upper and a big lateral variation of lithology. There are three silt layers in late Quaternary strata of Fuzhou basin. The first and second layers were developed during the middle and late Holocene, the deposition time is about 7.86ka BP to 1.44 ka BP and they are the results of "Changle Transgression". The third was developed during the late of late Pleistocene and the deposition time is from 44ka BP to 20ka BP and it is the result of "Fuzhou Transgression". The buried late Quaternary sediments in Fuzhou basin can be divided into upper Pleistocene series and Holocene series, which include four formations from old to new. They are the Longhai formation ( Q3p 1), Dongshan formation (Qhd), Changle formation (Qhc) and Jiangtian formation (Qhj), respectively. The Longhai formation can be divided into three members and belongs to the Pleistocene series, other three formations belong to the Holocene series.
文摘In this paper, design and construction of a modified cold molybdenum cathode Penning ion source was described. It consists of copper cylindrical anode with two cone ends and two movable cold molybdenum cathodes. The two cathodes were placed symmetrically at two ends of the anode. The modifications were decrease the length of the cylindrical anode to 4 cm instead of 6 cm, transform the copper emission electrode shape from plate of 40 mm length, 25 mm width and 2 mm thickness to disc of 20 mm diameter and 2 mm thickness and transform the inner uncovered area of the emission electrode from slit of 30 mm length and 10 mm width to disc of 5 mm diameter. The copper emission electrode was placed in the middle of the cylindrical anode and has aperture in the center of different diameters. Faraday cup was placed at different distances from the emission electrode aperture. The electrical discharge and the output ion beam characteristics of the modified ion source were measured at different pressures using argon gas. It was found that the optimum operating conditions of the modified ion source are; anode-cathode distance equal to 6 mm, emission electrode aperture diameter equal to 2.5 mm and emission electrode aperture, Faraday cup distance equals 3 cm. The effect of axial samarium cobalt permanent magnet of intensity equal to 300 Gauss on the discharge characteristics of the ion source was determined.
文摘Electro-thermal accelerator uses high-voltage arc energy to heat the actuating medium, it being made from low-molecular weight material. Projectile acceleration is achieved by expansion of the actuating medium. Numerical method for calculating interior ballistics uses Lagrangian coordinates there the conservation of momentum and the energy balance are solved. A statement of the energy balance reflects the second law of thermodynamics. Lagrangian different grid and scheme for numerical calculation were used. Fully explicit scheme was employed. The solving includes two stability conditions: Courant and shock (artificial viscosity). Numerical results were compared with the experimental research for pressure in the barrel in electro-thermal accelerator.
文摘Article 4 of the Labor Contract Law lays down the right of the Staff and Workers' Representative Congress (SWRC) to deliberate on the formulation of (intra-enterprise) work regulations, but this has become a "soft" law in judicial practice. The judicial criteria for judging the validity of work regulations are in essence determined by the judge's judgment on their reasonableness. As an important embodiment of Chinese politics, economics and culture, the transformation of the SWRC that accompanied the market economy has not negated its value as an indigenous traditional resource. The SWRC does not just enjoy deliberative rights in the formation of regulations, as clearly specified in constitutional law, but also has rights under the law in local legislation and practice. Hence the system of work regulations is neither a unilateral decision on the part of management nor a contract, but rather an autonomous norm developed through the SWRC mechanism. Given the mandatory nature of Article 4 of the Labor Contract Law, regulations will only be valid after they havegone through a democratic process. The further development of the theory of normative system formation should endow the SWRC with greater rights and integrate it smoothly with the collective contract system to standardize collective labor relations.
文摘In this paper the concept of first boundary condition (i)(i = 0, 1, 2,…, n) is proposed based on [1], the existence of two times spline interpolant under first boundary condition is proved using constructivity method and the uniqueness of the two times spline interpolant under first boundary condition(n) is proved too.
文摘The melting problem in a semi-infinite region with constant heat flux boundary condition is solved by a semi-expect method and an integral approximate method. Effect of subcooling on the transient solid-liquid interface location and surface temperature are also discussed in this paper.
基金supported by National Natural Science Foundation of China(Grant No.11171253)the Natural Science Foundation of Ministry of Education of Anhui Province(Grant No.KJ2012B197)
文摘We prove that for a compact Finsler manifold M with nonnegative weighted Ricci curvature,if its first closed(resp.Neumann)eigenvalue of Finsler-Laplacian attains the sharp lower bound,then M is isometric to a circle(resp.a segment).Moreover,a lower bound of the first eigenvalue of Finsler-Laplacian with Dirichlet boundary condition is also estimated.These generalize the corresponding results in recent literature.
文摘We study the performance of space division multiple access (SDMA) under a non-ideal engineering situation. When the SDMA channel is of high inter-layer correlation and the condition number is large, the multiple user multiple input and multiple output user equipment (MUMIMOUE) grouping should be optimized, and in some cases further dimension-reduction should be applied. As the channel measuring is always non-ideal, we use two methods, feedback mode and non-feedback mode, in terms of performance and overhead. It is proposed that the non-feedback mode is preferable even for some non-reciprocal channels. Prin- ciple analysis and test results are given.
基金supported by National Researcher Program of National Research Foundation of Korea(Grant No.2010-0020413)
文摘A fundamental result in the theory of minimal rational curves on projective manifolds is Cartan- Fubini extension theorem proved by Hwang and Mok, which describes the extensibility of biholomorphisms between connected open subsets of two Fano manifolds of Picard number 1 which preserve varieties of minimal rational tangents (VMRT), under a mild geometric assumption on the second fundamental forms of VMRT's. Hong and Mok have developed Cartan-Fubini extension for non-equidimensional holomorphic immersions from a connected open subset of a Pano manifold of Picard number 1 into a uniruled projective manifold, under the assumptions that the map sends VMRT's onto linear sections of VMRT's and it satisfies a mild geometric condition formulated in terms of second fundamental forms on VMRT's. In the current paper, we give a generalization of Hong and Mok's result, under the same condition on second fundamental forms, assuming only that the holomorphic immersions send VMRT's to VMRT's. Our argument is different from Hong and Mok's and is based on the study of natural foliations on the total family of VMRT's. This gives a substantially simpler proof than Hong and Mok's argument.