This paper introduces the principle of ATM switch, and discusses queueing disciplines and their performances. Authors describe the method of input queueing, output queueing, central queueing, combined input/output que...This paper introduces the principle of ATM switch, and discusses queueing disciplines and their performances. Authors describe the method of input queueing, output queueing, central queueing, combined input/output queuing, combined input/shared queueing, and multistage queueing in detail. They also present the relations between mean waiting time and input load. The queueing disciplines can be used to design the architecture of Asynchronous Transfer Mode (ATM) switch.展开更多
In this research,a Multidisciplinary Design Optimization approach is proposed for the dual-spin guided flying projectile design considering external and internal parts of the body as design variables.In this way,a par...In this research,a Multidisciplinary Design Optimization approach is proposed for the dual-spin guided flying projectile design considering external and internal parts of the body as design variables.In this way,a parametric formulation is developed.All related disciplines,including structure,aerodynamics,guidance,and control are considered.Minimum total mass,maximum aerodynamic control effectiveness,minimum miss distance,maximum yield stress in all subsystems,controllability and gyroscopic stability constraints are some of objectives/constraints taken into account.The problem is formulated in All-At-Ones Multidisciplinary Design Optimization approach structure and solved by Simulated Annealing and minimax algorithms.The optimal configurations are evaluated in various aspects.The resulted optimal configurations have met all design objectives and constraints.展开更多
Comments are given on the various physical definitions of the force constant of propellant. As there are more or less defects in these definitions, two new definitions are presented to reflect the physical essence of ...Comments are given on the various physical definitions of the force constant of propellant. As there are more or less defects in these definitions, two new definitions are presented to reflect the physical essence of propellant force more perfectly and could well compatible with the mathematical expression.展开更多
A nonlinear mathematic model taking the nutation and precession angles as variables for the coning motion of projectile was established according to a short period moment projection of the spining projectile. By intro...A nonlinear mathematic model taking the nutation and precession angles as variables for the coning motion of projectile was established according to a short period moment projection of the spining projectile. By introducing the generalized nutation angle and precession angular speed, the model that is difficult to be resolved can be transformed to a resolvable one. The interrelationship between nutation and precession was analyzed based on the linear model, and the stability condition was obtained for the spinning projectile. For the nonlinear model, the effects of the nutation and precession on the limit circle of the projectile's coning motion were investigated, and the analytical relations between the nutation angle and the precession angular speed in the steady coning motion of the spinning projectile were given.展开更多
The College of Fisheries of our university grew from the former Department of Fisheriesof Shandong College of Oceanology, which was founded in 1946 Having struggled forwordthrough twists and turns, risen up time and a...The College of Fisheries of our university grew from the former Department of Fisheriesof Shandong College of Oceanology, which was founded in 1946 Having struggled forwordthrough twists and turns, risen up time and again from straits for a period of more than forty years,the College of Fisheries was finally established on March 4 th, 1988, in the breeze of reformand opening. This college is equipped with complete disciplines of fishery sciences, withpredominant specialities and stressed branches featuring distinctive oceanic and aquatic qualitics.The college is now striding into a new historic period.展开更多
Time：December 7-10,2017 Venue：San Diego,California,USA Website：www.aaap.org/annual-meeting The Annual Meeting of American Academy of Addiction Psychiatry 2017 will be held on December 7-10,2017 in San Diego,Califor...Time：December 7-10,2017 Venue：San Diego,California,USA Website：www.aaap.org/annual-meeting The Annual Meeting of American Academy of Addiction Psychiatry 2017 will be held on December 7-10,2017 in San Diego,California,USA.The Annual Meeting and Scientific Symposium provide the latest scientific developments in addiction psychiatry for physicians and allied health professionals who treat patients with substance use disorders（SUD）and mental health disorders.展开更多
Traditional intercept probability model has some drawbacks and can not meet the demands of command and control system. Aiming at this problem, a new calculation method based on search theory, terminal control area dis...Traditional intercept probability model has some drawbacks and can not meet the demands of command and control system. Aiming at this problem, a new calculation method based on search theory, terminal control area distribution function of anti-ship missile, target distribution function and missile's radar scan feature is proposed. Under the condition of common target distribution, an intercept probability model for present point attacking is determined. The simulation verifies its effectiveness and establishes the selecting model for aiming point when enemy ships evade in high speed.展开更多
In 1995 Ince[1] wrote an article for the Times Higher Educational Supplement noting that there was little theoretical understanding of software engineering and that therefore computer studies did not constitute an aca...In 1995 Ince[1] wrote an article for the Times Higher Educational Supplement noting that there was little theoretical understanding of software engineering and that therefore computer studies did not constitute an academic discipline.Computing departments should be balkanised.Computing staff should be dispersed to other departments such as maths,psychology and business studies.This contro.ersy has recently been rein.igorated by McBride’s article[2] in the same paper and on the British Computer Society web site[3] arguing that in face of the massi.e decline in computing student intake onto uni.ersity undergraduate courses that the future for traditional courses is bleak.The reaction generated[3-4] reflects the anxiety within computing departments.The concern is e.ident.展开更多
Better Medicines through Global Education and Research October 12,2015Dear Professor Du：On behalf of the International Union of Basic and Clinical Pharmacology（IUPHAR）we wish to extend our best wishes and congratul...Better Medicines through Global Education and Research October 12,2015Dear Professor Du：On behalf of the International Union of Basic and Clinical Pharmacology（IUPHAR）we wish to extend our best wishes and congratulations to you and your colleagues as you celebrate the 30th anni-versary of the founding of the Chinese Pharmacological Society（CNPHARS）.展开更多
This paper proposes a new engineering disciplin─Engineering System Theory. It dis cusses rendered background, research objects and contents of the engineering system theory briefly. Finally, the met-discipline stand...This paper proposes a new engineering disciplin─Engineering System Theory. It dis cusses rendered background, research objects and contents of the engineering system theory briefly. Finally, the met-discipline standing of the engineering system theory in the whole knowledge system of engineering science and its development potential are pointed out.展开更多
文摘This paper introduces the principle of ATM switch, and discusses queueing disciplines and their performances. Authors describe the method of input queueing, output queueing, central queueing, combined input/output queuing, combined input/shared queueing, and multistage queueing in detail. They also present the relations between mean waiting time and input load. The queueing disciplines can be used to design the architecture of Asynchronous Transfer Mode (ATM) switch.
文摘In this research,a Multidisciplinary Design Optimization approach is proposed for the dual-spin guided flying projectile design considering external and internal parts of the body as design variables.In this way,a parametric formulation is developed.All related disciplines,including structure,aerodynamics,guidance,and control are considered.Minimum total mass,maximum aerodynamic control effectiveness,minimum miss distance,maximum yield stress in all subsystems,controllability and gyroscopic stability constraints are some of objectives/constraints taken into account.The problem is formulated in All-At-Ones Multidisciplinary Design Optimization approach structure and solved by Simulated Annealing and minimax algorithms.The optimal configurations are evaluated in various aspects.The resulted optimal configurations have met all design objectives and constraints.
文摘Comments are given on the various physical definitions of the force constant of propellant. As there are more or less defects in these definitions, two new definitions are presented to reflect the physical essence of propellant force more perfectly and could well compatible with the mathematical expression.
基金Sponsored by the National Science Foundation of China (10972034)
文摘A nonlinear mathematic model taking the nutation and precession angles as variables for the coning motion of projectile was established according to a short period moment projection of the spining projectile. By introducing the generalized nutation angle and precession angular speed, the model that is difficult to be resolved can be transformed to a resolvable one. The interrelationship between nutation and precession was analyzed based on the linear model, and the stability condition was obtained for the spinning projectile. For the nonlinear model, the effects of the nutation and precession on the limit circle of the projectile's coning motion were investigated, and the analytical relations between the nutation angle and the precession angular speed in the steady coning motion of the spinning projectile were given.
文摘The College of Fisheries of our university grew from the former Department of Fisheriesof Shandong College of Oceanology, which was founded in 1946 Having struggled forwordthrough twists and turns, risen up time and again from straits for a period of more than forty years,the College of Fisheries was finally established on March 4 th, 1988, in the breeze of reformand opening. This college is equipped with complete disciplines of fishery sciences, withpredominant specialities and stressed branches featuring distinctive oceanic and aquatic qualitics.The college is now striding into a new historic period.
文摘Time：December 7-10,2017 Venue：San Diego,California,USA Website：www.aaap.org/annual-meeting The Annual Meeting of American Academy of Addiction Psychiatry 2017 will be held on December 7-10,2017 in San Diego,California,USA.The Annual Meeting and Scientific Symposium provide the latest scientific developments in addiction psychiatry for physicians and allied health professionals who treat patients with substance use disorders（SUD）and mental health disorders.
文摘Traditional intercept probability model has some drawbacks and can not meet the demands of command and control system. Aiming at this problem, a new calculation method based on search theory, terminal control area distribution function of anti-ship missile, target distribution function and missile's radar scan feature is proposed. Under the condition of common target distribution, an intercept probability model for present point attacking is determined. The simulation verifies its effectiveness and establishes the selecting model for aiming point when enemy ships evade in high speed.
文摘In 1995 Ince[1] wrote an article for the Times Higher Educational Supplement noting that there was little theoretical understanding of software engineering and that therefore computer studies did not constitute an academic discipline.Computing departments should be balkanised.Computing staff should be dispersed to other departments such as maths,psychology and business studies.This contro.ersy has recently been rein.igorated by McBride’s article[2] in the same paper and on the British Computer Society web site[3] arguing that in face of the massi.e decline in computing student intake onto uni.ersity undergraduate courses that the future for traditional courses is bleak.The reaction generated[3-4] reflects the anxiety within computing departments.The concern is e.ident.
文摘Better Medicines through Global Education and Research October 12,2015Dear Professor Du：On behalf of the International Union of Basic and Clinical Pharmacology（IUPHAR）we wish to extend our best wishes and congratulations to you and your colleagues as you celebrate the 30th anni-versary of the founding of the Chinese Pharmacological Society（CNPHARS）.
文摘This paper proposes a new engineering disciplin─Engineering System Theory. It dis cusses rendered background, research objects and contents of the engineering system theory briefly. Finally, the met-discipline standing of the engineering system theory in the whole knowledge system of engineering science and its development potential are pointed out.
