The effect of reinforcing roof, sides and floor corners to control floor heave of extraction opening was analyzed, It was proved by engineering practice and numerical simulation that reinforcing any part of surroundin...The effect of reinforcing roof, sides and floor corners to control floor heave of extraction opening was analyzed, It was proved by engineering practice and numerical simulation that reinforcing any part of surrounding rock have certainly control effect for floor heave, in the basis of this, the new way that roof, sides and floor corners were rein-forced to control floor heave was put forward. Contrasting control result of reinforcing floor with this, it is determined that reinforcing is more suitable to control floor heave of extrac-tion opening than reinforcing floor when advancing abutment pressure is in some range.展开更多
Tendons vertically moor Tension-Leg Platforms （TLPs）, thus, a deep understanding of physical tendon stresses requires the determination of the total axial deformation of the tendons, which is a combination of the he...Tendons vertically moor Tension-Leg Platforms （TLPs）, thus, a deep understanding of physical tendon stresses requires the determination of the total axial deformation of the tendons, which is a combination of the heave, pitch, and surging responses. The vertical motion of the lateral sides of the TLP is coupled with surge and constitutes a portion of the pitch motion. Tendons are connected to the sides of the TLP; hence, the total displacement of the lateral sides is related to the total deformation of the tendons and the total axial stress. Therefore, investigating the total vertical response at the sides of the TLP is essential. The coupling between various degrees of freedom is not considered in the Response Amplitude Operator （RAO）. Therefore, in frequency domain analysis, the estimated vertical RAO is incomplete. Also, in the time domain, only the heave motion at the center of TLP is typically studied; this problem needs to be addressed. In this paper, we investigate the portion of the pitch motion in the vertical response at the sides of the TLP in both the frequency and time domains. Numerical results demonstrate a significant effect of the pitch motion in the vertical motion of the edges of the TLP in some period ranges.展开更多
Cancer and neurodegeneration include a group of diseases that are mechanistically distinct but may share common therapeutic targets.Autophagy is a common quality control mechanism shared by mitotic and post-mitotic ce...Cancer and neurodegeneration include a group of diseases that are mechanistically distinct but may share common therapeutic targets.Autophagy is a common quality control mechanism shared by mitotic and post-mitotic cells and it can be exploited to accelerate clearance of unwanted oncogenes and reduce accumulation of toxic proteins in cancer and neurodegeneration,respectively.Tyrosine kinase inhibition is a therapeutically relevant strategy that can induce autophagy, leading to normal cell survival. This article provides insights into how tyrosine kinase inhibition is clinically used to arrest mitotic cell division and tumor growth, and may promote survival of post-mitotic neurons in neurodegeneration.展开更多
Numerical methods for Differential-Algebraic systems with discontinuous right-hand sides is discussed. A class of continuous Rosenbrock methods are constructed, and numerical experiments show that the continuous Rosen...Numerical methods for Differential-Algebraic systems with discontinuous right-hand sides is discussed. A class of continuous Rosenbrock methods are constructed, and numerical experiments show that the continuous Rosenbrock methods are effective. Applying the methods, a fast and high-precision numerical algorithm is given to deal with typical discontinuous parts, which occur frequently in differential-algebraic systems(DAS).展开更多
In this paper, we investigate the condition numbers for indefinite least squares problem with multiple right-hand sides. The normwise, mixed and componentwise condition numbers and the corresponding structured conditi...In this paper, we investigate the condition numbers for indefinite least squares problem with multiple right-hand sides. The normwise, mixed and componentwise condition numbers and the corresponding structured condition numbers are presented. The structured matrices under consideration include the linear structured matrices, such as the Toeplitz, Hankel, symmetric, and tridiagonal matrices, and the nonlinear structured matrices, such as the Vandermonde and Cauchy matrices. Numerical examples show that the structured condition numbers are tighter than the unstructured ones.展开更多
The purpose of this study was to investigate the differences in the sensory threshold between the paretic and nonparetic sides of hemiplegic patients. 28 patients who were hemiplegic post-stroke (14 men and 14 women) ...The purpose of this study was to investigate the differences in the sensory threshold between the paretic and nonparetic sides of hemiplegic patients. 28 patients who were hemiplegic post-stroke (14 men and 14 women) participated in the electrical sensory and pain thresholds study;22 patients who were hemiplegic post-stroke (13 men, 9 women) participated in a study measureing the sensory threshold with light touch. Electrical sensory and pain thresholds were measured in the forearm via transcutaneous electrical nerve stimulation. The light-touch threshold was measured in the forearm using monofilaments. The light-touch, electrical sensory, and pain thresholds for the paretic side were significantly higher than for the nonparetic side in our population, respectively. In both the nonparetic and paretic sides, the male group generally showed higher thresholds for pain and sensation than did the female group. These results suggest that the different evaluations of sensory thresholds performed in this study for healthy rehabilitation will be a valuable clinical tool in hemiplegic patients after stroke.展开更多
Roadway surrounding rock is a compound structure consisted of roof, floor and sides. The sides of extraction opening is the weak coal mass, which affect immediately the stability of floor. It was simulated by numerica...Roadway surrounding rock is a compound structure consisted of roof, floor and sides. The sides of extraction opening is the weak coal mass, which affect immediately the stability of floor. It was simulated by numerical calculation for the strength of sides coal to affect the floor heave, the higher strength of sides coal is, the lower degree of floor heave was. So it was put forward reinforcing sides to control floor heave of extraction opening, and it was proved by engineering practice that the floor heave of deep extraction opening can be controlled to a certain degree by reinforcing sides of roadway.展开更多
The ratio of the number of emitted pions from the target side to that from the projectile side at target rapidity within the reaction plane is investigated for the study of the pion dynamics with an isospin-dependent ...The ratio of the number of emitted pions from the target side to that from the projectile side at target rapidity within the reaction plane is investigated for the study of the pion dynamics with an isospin-dependent quantum molecular dynamic model. The results show that high-energy pions are emitted preferentially towards the target side and, therefore, they are freezed out at the early stage of the collision. By contrast, low-energy pions are emitted predominantly in the opposite direction, which means that they are emitted in a later stage. This argument is based on the shadowing effect caused by the interaction of pions with the spectator matter in peripheral collisions at target or projectile rapidities. This phenomenon disappears in the central collision or at midrapidity due to the weaker shadowing effect. The calculated ratios are also compared with the experimental data.展开更多
At the invitation of Pen-tsao Chang, Chairman of the Commercial Affairs Coordination Committee for the Two Sides of the Straits, a delegation composed of nine intellectual property experts and scholars, headed by Xie ...At the invitation of Pen-tsao Chang, Chairman of the Commercial Affairs Coordination Committee for the Two Sides of the Straits, a delegation composed of nine intellectual property experts and scholars, headed by Xie Jianqun, Vicechairman of the China Council for the Promotion of International Trade (CCPIT) and Chairman of the Economic and Trade Coordination Committee for the Two Sides of the Straits, recently paid a nineday visit to Taiwan. The visit caught the attention of Taiwan’s mass media as it was the first high-ranking economic展开更多
In the issue of January, 2002, the magazine "Relation Between Both Sides of the Taiwan Straits" published by the Association of the Relation Between the Both Sides of the Taiwan Straits, a signed essay was c...In the issue of January, 2002, the magazine "Relation Between Both Sides of the Taiwan Straits" published by the Association of the Relation Between the Both Sides of the Taiwan Straits, a signed essay was carried out, stating that the development of the relation between the both sides last year, anticipates the trends of such relation in the future.展开更多
With trade of over $100 billion in 2009, the importance of China and Africa bilateral exchanges are growing daily. This blooming relationship increases the need of understanding the ways of doing business.This regular...With trade of over $100 billion in 2009, the importance of China and Africa bilateral exchanges are growing daily. This blooming relationship increases the need of understanding the ways of doing business.This regular column will provide a practical insight of doing business in China, including tips and advice based on experience.展开更多
The aim of this paper is to lay a algebraic geometry foundation for constructing smoothing interpolants on curved side element. Some interpolation theorems in polynomial space are given. The main results effectively f...The aim of this paper is to lay a algebraic geometry foundation for constructing smoothing interpolants on curved side element. Some interpolation theorems in polynomial space are given. The main results effectively for CAGD are presented.展开更多
Economic considerations occupy an important place in relations between China and theEuropean Union(EU). This paper will attempt to explain the reasons behind this and willexplore perspectives from both sides. The majo...Economic considerations occupy an important place in relations between China and theEuropean Union(EU). This paper will attempt to explain the reasons behind this and willexplore perspectives from both sides. The major points are as follows: (1) The end of theCold War and the growing phenomenon of economic globalization have made both sidesplace much more importance on developing bilateral economic relations. (2) Having re-defined economic development as its core national interests through the launch of reformsand an open-door policy, China views the EU as an increasingly significant economicpartner, particularly in the area of trade, investment, technology imports and economiccooperation. (3) The fundamental aim of the EUs economic policies is to explore to thefullest opportunities provided by Chinas development and to protect the economic securityof Europe. (4) Because of the different positions they hold and their varying levels ofdevelopment, some differences in policy considerations by the two partners are inevitable.However, both China and the EU have been making efforts to narrow these differences andwiden their shared interests, so as to promote their common economic goals.展开更多
On February 21,China Institute of International Studies (CIIS) released the special research report"China-Russia Relations in the New Era."Assistant Minister of Foreign Affairs Liu Bin and Russian Ambassador...On February 21,China Institute of International Studies (CIIS) released the special research report"China-Russia Relations in the New Era."Assistant Minister of Foreign Affairs Liu Bin and Russian Ambassador to China Igor Morgulov attended the release conference and delivered speeches.CIIS President Chen Bo presided over the event and introduced the main content of the report.展开更多
The analysis refers to the interwar years in Europe.We distinguish four types of coalitions here:(a)Coalitions with other democratic parties,led by a predominant party and most common in multi-party democratic states....The analysis refers to the interwar years in Europe.We distinguish four types of coalitions here:(a)Coalitions with other democratic parties,led by a predominant party and most common in multi-party democratic states.(b)Bringing in ideological opponents on the parts of overarching highly credible national figures such as King George V did in Britain in 1931 in calling upon the charismatic Labour Party leader MacDonald to form a coalition with the still dominant but ailing Conservative Party.(c)The outbidding of more radical political parties by former center parties towards the right or left.One such outcome comes about when this is having a temporary effect only,until the next election is won within the family of democratic parties.Yet,when outbidding is trump the electorate easily might go for the hardest outbidding contender not to be taken over by even greater extremist parties.This process for the analysis of political terrorism and its intention to instigate fear amongst the“neutral”population explains to a large extent why considerable portions of the population are going to side with the most extreme challengers.This is for two reasons,one is pure fear to be out-mastered,the other one is rational choice just to avoid this.(d)The other outcome as to outbidding occurs when the democratic national consensus formation that is still underlying all these processes in normal times is wiped out in times of crises.Democratic national consensus is being lost vis-à-vis a new anti-democratic national consensus formation.Several other theoretical arguments and historical experiences are touched upon.展开更多
Tensions between Russia and Georgia mount as both sides dig in their heels in a regional standoff The strained relationship between Georgia and Russia stretched tight since the launch of the"Rose Revolution"...Tensions between Russia and Georgia mount as both sides dig in their heels in a regional standoff The strained relationship between Georgia and Russia stretched tight since the launch of the"Rose Revolution"in 2003 came close to recent breaking point.On April 20, the Georgian Government reported that a Russian fighter had shot down one of its unmanned spy planes flying over the Georgian breakaway province of Abkhazia. Russia was quick to deny the charges展开更多
Fifty--one constructors from both main-land and Taiwan got together at the "Con-structor’s House" in the capital Beijing fromJuly 6 through July 8, and talked over the is-sues of urban planning, constructio...Fifty--one constructors from both main-land and Taiwan got together at the "Con-structor’s House" in the capital Beijing fromJuly 6 through July 8, and talked over the is-sues of urban planning, construction and ad-展开更多
THE goddess Mazu has been held in great esteem by emperors since the Song Dynasty (960-1279). Wherever the Chinese live, in Asia, Africa, South America and North America, there are worshipers of Mazu. According to sta...THE goddess Mazu has been held in great esteem by emperors since the Song Dynasty (960-1279). Wherever the Chinese live, in Asia, Africa, South America and North America, there are worshipers of Mazu. According to statistics, there are more than 1,500 Mazu temples and more than 200 million Mazu devotees in the world. Mazu culture, with its unique style, affects people and promotes friendly relations of compatriots on both sides of the Taiwan Straits.展开更多
基金Supported by the Natural Science Foundation Project of Hunan(01JJY3020)
文摘The effect of reinforcing roof, sides and floor corners to control floor heave of extraction opening was analyzed, It was proved by engineering practice and numerical simulation that reinforcing any part of surrounding rock have certainly control effect for floor heave, in the basis of this, the new way that roof, sides and floor corners were rein-forced to control floor heave was put forward. Contrasting control result of reinforcing floor with this, it is determined that reinforcing is more suitable to control floor heave of extrac-tion opening than reinforcing floor when advancing abutment pressure is in some range.
文摘Tendons vertically moor Tension-Leg Platforms （TLPs）, thus, a deep understanding of physical tendon stresses requires the determination of the total axial deformation of the tendons, which is a combination of the heave, pitch, and surging responses. The vertical motion of the lateral sides of the TLP is coupled with surge and constitutes a portion of the pitch motion. Tendons are connected to the sides of the TLP; hence, the total displacement of the lateral sides is related to the total deformation of the tendons and the total axial stress. Therefore, investigating the total vertical response at the sides of the TLP is essential. The coupling between various degrees of freedom is not considered in the Response Amplitude Operator （RAO）. Therefore, in frequency domain analysis, the estimated vertical RAO is incomplete. Also, in the time domain, only the heave motion at the center of TLP is typically studied; this problem needs to be addressed. In this paper, we investigate the portion of the pitch motion in the vertical response at the sides of the TLP in both the frequency and time domains. Numerical results demonstrate a significant effect of the pitch motion in the vertical motion of the edges of the TLP in some period ranges.
基金supported by Georgetown University funding to CEHM
文摘Cancer and neurodegeneration include a group of diseases that are mechanistically distinct but may share common therapeutic targets.Autophagy is a common quality control mechanism shared by mitotic and post-mitotic cells and it can be exploited to accelerate clearance of unwanted oncogenes and reduce accumulation of toxic proteins in cancer and neurodegeneration,respectively.Tyrosine kinase inhibition is a therapeutically relevant strategy that can induce autophagy, leading to normal cell survival. This article provides insights into how tyrosine kinase inhibition is clinically used to arrest mitotic cell division and tumor growth, and may promote survival of post-mitotic neurons in neurodegeneration.
文摘Numerical methods for Differential-Algebraic systems with discontinuous right-hand sides is discussed. A class of continuous Rosenbrock methods are constructed, and numerical experiments show that the continuous Rosenbrock methods are effective. Applying the methods, a fast and high-precision numerical algorithm is given to deal with typical discontinuous parts, which occur frequently in differential-algebraic systems(DAS).
基金Supported by the National Natural Science Foundation of China(Grant No.11671060)the Fundamental Research Funds for the Central Universities(Grant No.106112015CDJXY100003)
文摘In this paper, we investigate the condition numbers for indefinite least squares problem with multiple right-hand sides. The normwise, mixed and componentwise condition numbers and the corresponding structured condition numbers are presented. The structured matrices under consideration include the linear structured matrices, such as the Toeplitz, Hankel, symmetric, and tridiagonal matrices, and the nonlinear structured matrices, such as the Vandermonde and Cauchy matrices. Numerical examples show that the structured condition numbers are tighter than the unstructured ones.
文摘The purpose of this study was to investigate the differences in the sensory threshold between the paretic and nonparetic sides of hemiplegic patients. 28 patients who were hemiplegic post-stroke (14 men and 14 women) participated in the electrical sensory and pain thresholds study;22 patients who were hemiplegic post-stroke (13 men, 9 women) participated in a study measureing the sensory threshold with light touch. Electrical sensory and pain thresholds were measured in the forearm via transcutaneous electrical nerve stimulation. The light-touch threshold was measured in the forearm using monofilaments. The light-touch, electrical sensory, and pain thresholds for the paretic side were significantly higher than for the nonparetic side in our population, respectively. In both the nonparetic and paretic sides, the male group generally showed higher thresholds for pain and sensation than did the female group. These results suggest that the different evaluations of sensory thresholds performed in this study for healthy rehabilitation will be a valuable clinical tool in hemiplegic patients after stroke.
基金Supported by Hunan Nature Science Foundation(04JJY3113)
文摘Roadway surrounding rock is a compound structure consisted of roof, floor and sides. The sides of extraction opening is the weak coal mass, which affect immediately the stability of floor. It was simulated by numerical calculation for the strength of sides coal to affect the floor heave, the higher strength of sides coal is, the lower degree of floor heave was. So it was put forward reinforcing sides to control floor heave of extraction opening, and it was proved by engineering practice that the floor heave of deep extraction opening can be controlled to a certain degree by reinforcing sides of roadway.
基金Supported by the National Natural Science Foundation of China under Grant Nos 11421505 and 11220101005the National Basic Research Program of China under Grant No 2014CB845401
文摘The ratio of the number of emitted pions from the target side to that from the projectile side at target rapidity within the reaction plane is investigated for the study of the pion dynamics with an isospin-dependent quantum molecular dynamic model. The results show that high-energy pions are emitted preferentially towards the target side and, therefore, they are freezed out at the early stage of the collision. By contrast, low-energy pions are emitted predominantly in the opposite direction, which means that they are emitted in a later stage. This argument is based on the shadowing effect caused by the interaction of pions with the spectator matter in peripheral collisions at target or projectile rapidities. This phenomenon disappears in the central collision or at midrapidity due to the weaker shadowing effect. The calculated ratios are also compared with the experimental data.
文摘At the invitation of Pen-tsao Chang, Chairman of the Commercial Affairs Coordination Committee for the Two Sides of the Straits, a delegation composed of nine intellectual property experts and scholars, headed by Xie Jianqun, Vicechairman of the China Council for the Promotion of International Trade (CCPIT) and Chairman of the Economic and Trade Coordination Committee for the Two Sides of the Straits, recently paid a nineday visit to Taiwan. The visit caught the attention of Taiwan’s mass media as it was the first high-ranking economic
文摘In the issue of January, 2002, the magazine "Relation Between Both Sides of the Taiwan Straits" published by the Association of the Relation Between the Both Sides of the Taiwan Straits, a signed essay was carried out, stating that the development of the relation between the both sides last year, anticipates the trends of such relation in the future.
文摘With trade of over $100 billion in 2009, the importance of China and Africa bilateral exchanges are growing daily. This blooming relationship increases the need of understanding the ways of doing business.This regular column will provide a practical insight of doing business in China, including tips and advice based on experience.
文摘The aim of this paper is to lay a algebraic geometry foundation for constructing smoothing interpolants on curved side element. Some interpolation theorems in polynomial space are given. The main results effectively for CAGD are presented.
文摘Economic considerations occupy an important place in relations between China and theEuropean Union(EU). This paper will attempt to explain the reasons behind this and willexplore perspectives from both sides. The major points are as follows: (1) The end of theCold War and the growing phenomenon of economic globalization have made both sidesplace much more importance on developing bilateral economic relations. (2) Having re-defined economic development as its core national interests through the launch of reformsand an open-door policy, China views the EU as an increasingly significant economicpartner, particularly in the area of trade, investment, technology imports and economiccooperation. (3) The fundamental aim of the EUs economic policies is to explore to thefullest opportunities provided by Chinas development and to protect the economic securityof Europe. (4) Because of the different positions they hold and their varying levels ofdevelopment, some differences in policy considerations by the two partners are inevitable.However, both China and the EU have been making efforts to narrow these differences andwiden their shared interests, so as to promote their common economic goals.
文摘On February 21,China Institute of International Studies (CIIS) released the special research report"China-Russia Relations in the New Era."Assistant Minister of Foreign Affairs Liu Bin and Russian Ambassador to China Igor Morgulov attended the release conference and delivered speeches.CIIS President Chen Bo presided over the event and introduced the main content of the report.
文摘The analysis refers to the interwar years in Europe.We distinguish four types of coalitions here:(a)Coalitions with other democratic parties,led by a predominant party and most common in multi-party democratic states.(b)Bringing in ideological opponents on the parts of overarching highly credible national figures such as King George V did in Britain in 1931 in calling upon the charismatic Labour Party leader MacDonald to form a coalition with the still dominant but ailing Conservative Party.(c)The outbidding of more radical political parties by former center parties towards the right or left.One such outcome comes about when this is having a temporary effect only,until the next election is won within the family of democratic parties.Yet,when outbidding is trump the electorate easily might go for the hardest outbidding contender not to be taken over by even greater extremist parties.This process for the analysis of political terrorism and its intention to instigate fear amongst the“neutral”population explains to a large extent why considerable portions of the population are going to side with the most extreme challengers.This is for two reasons,one is pure fear to be out-mastered,the other one is rational choice just to avoid this.(d)The other outcome as to outbidding occurs when the democratic national consensus formation that is still underlying all these processes in normal times is wiped out in times of crises.Democratic national consensus is being lost vis-à-vis a new anti-democratic national consensus formation.Several other theoretical arguments and historical experiences are touched upon.
文摘Tensions between Russia and Georgia mount as both sides dig in their heels in a regional standoff The strained relationship between Georgia and Russia stretched tight since the launch of the"Rose Revolution"in 2003 came close to recent breaking point.On April 20, the Georgian Government reported that a Russian fighter had shot down one of its unmanned spy planes flying over the Georgian breakaway province of Abkhazia. Russia was quick to deny the charges
文摘Fifty--one constructors from both main-land and Taiwan got together at the "Con-structor’s House" in the capital Beijing fromJuly 6 through July 8, and talked over the is-sues of urban planning, construction and ad-
文摘THE goddess Mazu has been held in great esteem by emperors since the Song Dynasty (960-1279). Wherever the Chinese live, in Asia, Africa, South America and North America, there are worshipers of Mazu. According to statistics, there are more than 1,500 Mazu temples and more than 200 million Mazu devotees in the world. Mazu culture, with its unique style, affects people and promotes friendly relations of compatriots on both sides of the Taiwan Straits.
