期刊文献+
共找到725篇文章
< 1 2 37 >
每页显示 20 50 100
About Feasibility of a 5th Generation Light Fighter Aircraft
1
作者 Sergio Chiesq Marco Fioriti 《Journal of Mechanics Engineering and Automation》 2014年第5期441-450,共10页
The paper aimed to illustrate an idea about the feasibility of a peculiar aircraft, i.e., a 5th generation light fighter. At first, a short description of previous "generations" of jet fighter is given, introducing ... The paper aimed to illustrate an idea about the feasibility of a peculiar aircraft, i.e., a 5th generation light fighter. At first, a short description of previous "generations" of jet fighter is given, introducing the interest that has always been originated by the concept of"light fighter" for every of the first four fighter generations. The derivation of the first idea of a new 5th generation light fighter is then described. Then to further investigate the feasibility of idea, a conceptual design study has been driven up by utilizing peculiar tools, both for quantitative and qualitative (i.e., the aircraft layout definition) evaluations. With the further support of preliminary study of subsystems, the result shows the feasibility of the concept. 展开更多
关键词 Light fighter 5th generation fighter fighter conceptual design fighter layout.
下载PDF
TASK EFFECTIVENESS EVALUATION ON ANTI-SHIP ATTACK OF FIGHTER AIRCRAFT 被引量:6
2
作者 刘航 许溟 +2 位作者 陈南宇 祝成民 武哲 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2012年第2期164-170,共7页
The characteristics of the confrontation between fighters and air-defense systems on ship are analyzed. The approach of simulating operations of both sides is presented based on the combination of random-factor effect... The characteristics of the confrontation between fighters and air-defense systems on ship are analyzed. The approach of simulating operations of both sides is presented based on the combination of random-factor effectiveness simulation models and deterministic models. Two basic indices are proposed to indicate task effectiveness (i. e. the survival probability of the fighter team and the specified effect of damage on the fleet) and relative algo- rithms. To verify the approach, the situation that a fighter team attacks a collective defense fleet is exemplified and the task effectiveness of this case is also calculated. The method for evaluating task effectiveness on anti-ship attack can be applied in aircraft design and tactical research. 展开更多
关键词 fighter aircraft combat effectiveness anti-ship attack
下载PDF
解读单元考点,牵手高频考题——Unit 14 Freedom fighters(英文)
3
作者 李也白 《中学生英语(高中版)》 2008年第8期16-17,共2页
1. Often blacks were not allowed intohotels, schools or libraries at all. (Page 28)【考点】allow的用法【归纳】allow 意为"允许, 准许"。用法有:allow sth. doing sth.allow sb. to do sth.allow sb. sth.allow for +... 1. Often blacks were not allowed intohotels, schools or libraries at all. (Page 28)【考点】allow的用法【归纳】allow 意为"允许, 准许"。用法有:allow sth. doing sth.allow sb. to do sth.allow sb. sth.allow for +n. (考虑, 顾及) / doing / obj.+ 展开更多
关键词 Unit 14 Freedom fighters
下载PDF
Fault prediction of fighter based on nonparametric density estimation 被引量:3
4
作者 Zhang Zhengdao Hu Shousong 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2005年第4期831-836,共6页
Fighters and other complex engineering systems have many characteristics such as difficult modeling and testing, multiple working situations, and high cost. Aim at these points, a new kind of real-time fault predictor... Fighters and other complex engineering systems have many characteristics such as difficult modeling and testing, multiple working situations, and high cost. Aim at these points, a new kind of real-time fault predictor is designed based on an improved k-nearest neighbor method, which needs neither the math model of system nc, the training data and prior knowledge. It can study and predict while system's running, so that it can overcome the difficulty of data acquirement. Besides, this predictor has a fast prediction speed, and the false alarm rate and missing alarm rate can be adjusted randomly. The method is simple and universalizable. The result of simulation on fighter F-16 proved the effidency. 展开更多
关键词 fighter fault prediction k-nearest neighbor method.
下载PDF
ANALYSES ON SYSTEMATIC CONFRONTATION OF FIGHTER AIRCRAFT 被引量:3
5
作者 HuaiJinpeng WuZhe HuangJun 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2002年第1期37-43,共7页
Analyses of the systematic confrontation between two military forcfes are the highest hierarchy on opera-tional effectiveness study of weapon systema.The physi-cal model for tactical many-on-many engagements of an aer... Analyses of the systematic confrontation between two military forcfes are the highest hierarchy on opera-tional effectiveness study of weapon systema.The physi-cal model for tactical many-on-many engagements of an aerial warfare with heterogeneous figher aircraft is estab-lished.On the basis of Lanchester multivariate equations of square law,a mathematical model corresponding to the established physical model is given.A superiorityh parame-ter is then derived directly from the mathematical model.With view to the high -tech condition of modern war-fare,the concept of superiority parameter which more well and truly reflects the essential of an air-to-air en-gagement is further formulated.The attrition coeffi-cients,which are key to the differential equations,are de-termined by using tactics of random target assignment and air-to-air capability index of the fighter aircraft.Hereby,taking the mathematical model and superiority parameter as cores,calculations amd analyses of complicate systemic problems such as evaluation of battle superiority,prog-mostication of combat process and optimization of colloca-tions have been accomplished.Results indicate that a clas-sical combat theory with its certain recent development has received newer applications in the military operation research for complicated confrontation analysis issues. 展开更多
关键词 AERIAL warfare suste atoc cpmfrpmatopm op-eratopmal effectovemess SUPERIORITY parame-ter Lanchester equation fighter AIRCRAFT 战斗机 战斗机 作战效能 空战 武器对抗
下载PDF
THE DECENTRALIZED ROBUST FAULT TOLERANT CONTROL FOR THE SENSOR FAILURE OF THE FIGHTER
6
作者 Hu Shousong Jin Long( Dept of. Auio Conirol, Nanjing University of Aeronauticsand Astronautics, Nanjing, China, 210016)Wang Fei(618 Research Inslitute, Aeronautic Establishment, Hi’an, China, 710061 ) 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 1995年第1期63-68,共6页
THEDECENTRALIZEDROBUSTFAULTTOLERANTCONTROLFORTHESENSORFAILUREOFTHEFIGHTERHuShousong;JinLong(Deptof.AuioConir... THEDECENTRALIZEDROBUSTFAULTTOLERANTCONTROLFORTHESENSORFAILUREOFTHEFIGHTERHuShousong;JinLong(Deptof.AuioConirol,NanjingUnivers... 展开更多
关键词 fighter aircraft fault tolerance sensors FAILURE robustness
下载PDF
Adaptive Signal Conditioning Technology in Fighter Weapon System Test
7
作者 范惠林 侯满义 +1 位作者 耿振野 徐洪吉 《Defence Technology(防务技术)》 SCIE EI CAS 2009年第4期317-320,共4页
In order to realize the real-time and precise test for a weapon system of a certain type of fighter,a signal classification method according to attributes is proposed,common input channels for multiple signals are con... In order to realize the real-time and precise test for a weapon system of a certain type of fighter,a signal classification method according to attributes is proposed,common input channels for multiple signals are configured optimally,and a test adapter and an adaptive signal conditioning module is designed. The hardware of conditioning module can be configured flexibly and the programmable test range can be adjusted owing to programmable multiplexer. An FPGA adaptive filter is designed by the calculated filter coefficient vectors with LMS method to solve the problem of parallel test of fighter weapon system in electromagnetic interference environment. The adaptive signal conditioning technology is characterized by high efficiency,precision and integration. Its application makes the test system successful to conduct real-time and parallel test for a weapon system,which is developed based on VXI bus and virtual-instrument technology. 展开更多
关键词 ground-based facility and technical support of aviation fighter weapon system test signal conditioning ADAPTIVE FILTER
下载PDF
Unit 14 Freedom fighters课本要点精练(英文)
8
作者 李华 《中学生英语(高中版)》 2008年第8期12-13,48,共3页
Ⅰ. 单词拼写。根据句意和汉语提示, 写出所缺单词的恰当形式。1. (奴隶制) is the system by whichsome people are owned by others.2. Fifty years ago, mixed-race marriages were(禁止)。
关键词 单项填空 Unit 14 Freedom fighters 完成句子
下载PDF
THE FUZZY SYNTHETIC JUDGEMENT OF CORRELATING PARAMETER OF FIGHTER DESIGN
9
作者 Cui Hong and Zao YongBeijing University of Aeronautics and Astronautics 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 1991年第1期20-25,共6页
An expression of correlating parameter is developed which can be used to synthetically express the close combat maneuverability of fighters by the method of fuzzy mathematics. On the basis of analysis of fighter maneu... An expression of correlating parameter is developed which can be used to synthetically express the close combat maneuverability of fighters by the method of fuzzy mathematics. On the basis of analysis of fighter maneuvering performances, this paper proposes the parameters ωA,ωs, and SEP to measure the maneuvering performances. The linear weighted method, which is one of the basic methods of transforming several objects to a single object in mathematics programming, is used to determine the form of the correlating parameter expression. The focal point of this paper's work is to determine the weight coefficients of maneuvering performances in the expression. In order to solve this problem, the inverse problem of synthetic judgement in fuzzy mathematics is employed. The development of the equation of fuzzy relationship in this paper is based on the judgement data, which are gathered from many experts working in aeronautical field. Therefore, the expression of correlating parameter developed by this paper can be used in the design object at aircraft conceptual design stage and the judgement of synthetical measurement of the maneuverability of fighters. 展开更多
关键词 THE FUZZY SYNTHETIC JUDGEMENT OF CORRELATING PARAMETER OF fighter DESIGN
下载PDF
King Of Fighters 2000最强招式大曝光
10
作者 暴龙 《广东电脑与电讯》 2000年第9期108-111,共4页
最近电玩界最热门话题当然是《THE KOF FIGHTERS 2000》!虽然由街机移PC仍有一大段时间,不过对于游戏机发烧说,又怎能错过这个游戏。正因为新一集KOF快将推出,各位KOF的FANS不妨先多解这集的系统,才开始新一集的战斗吧!
关键词 The KING of fighters MVS基板 FTG游戏
下载PDF
Unit14 Freedom fighters 学习指导
11
作者 苏芳 《中学生英语(高中版)》 2006年第8期8-10,15,共3页
关键词 Unit14 Freedom fighters 全部倒装 部分倒装
下载PDF
Unit 14 Freedom fighters要点解读
12
作者 杨子富 《中学生英语(高中版)》 2008年第8期7-9,共3页
一、词语例解1.prison n.1)监狱;牢房He is in prison now.That's why wehaven't seen him for months.他在坐牢,所以我们好几个月没见到他了。It was reported that four men escapedfrom prison yesterday.据报道。
关键词 动词不定式 强调句 Unit 14 Freedom fighters
下载PDF
Unit14 Freedom fighters 课本要点精练(英文)
13
作者 但金山 《中学生英语(高中版)》 2006年第8期10-11,17+47,共3页
关键词 Unit14 Freedom fighters
下载PDF
The Fire Fighters Protecting The Potala Palace
14
作者 Jia Lijun Lu Yunliang 《China's Tibet》 2008年第2期65-69,共5页
The Potala Palace is situated on the"red"mountain of Lhasa.A group of police fire fighters, unknown to most people,are actually the"guardians of the national treasures"and are living all year aroun... The Potala Palace is situated on the"red"mountain of Lhasa.A group of police fire fighters, unknown to most people,are actually the"guardians of the national treasures"and are living all year around inside the Potala Palace.Seemingly they have formed a consolidated"fireproof wall"to protect this world famous cultural heritage.Since they took up residence 23 years ago, there have been no accidental fires in the palace. 展开更多
关键词 The Fire fighters Protecting The Potala Palace
下载PDF
Oedipus——An Active Fighter or A Passive Figure
15
作者 郑颖 《科技信息》 2009年第19期163-164,175,共3页
As one of the seven survival plays of Sophocles of ancient Greece,Oedipus Rex arouses many scholars' interest in Ancient Greek tragedy.Until now there are a lot of critical comments on the great play itself and th... As one of the seven survival plays of Sophocles of ancient Greece,Oedipus Rex arouses many scholars' interest in Ancient Greek tragedy.Until now there are a lot of critical comments on the great play itself and the main character Oedipus himself.The super hero Oedipus blinded his own eyes by his own hands at the end of the play.People showed different views on his behavior.On the basis of different views,this article is going to discuss whether Oedipus is a passive figure or an active fighter at that time. 展开更多
关键词 希腊神话 战神 形象 俄狄浦斯
下载PDF
Nathaniel Hawthorne, a Good Fighter for Bible.——On his Christian Thoughts in The Scarlet Letter
16
作者 金小微 《科技信息》 2011年第34期201-202,共2页
Nathaniel Hawthorne,one of the most famous writers in America in 19th century,lived in the circumstance of Puritanism.As the complicated condition in Puritanism,Hawthorne treated it with a complicated attitude.The Sca... Nathaniel Hawthorne,one of the most famous writers in America in 19th century,lived in the circumstance of Puritanism.As the complicated condition in Puritanism,Hawthorne treated it with a complicated attitude.The Scarlet Letter is one of Hawthorne's best novels.Through his positive attitude towards some Biblical principles,we can see his desire for real belief;through the characters'tragedies in The Scarlet Letter,we can see his negative attitude towards Puritanism.This thesis discusses Hawthorne's attitude towards Biblical principles in The Scarlet Letter to show he is a good fighter for Bible. 展开更多
关键词 英语教学 教学方法 阅读教学 英语翻译
下载PDF
Boundary-layer transition of advanced fighter wings at high-speed cruise conditions 被引量:5
17
作者 Yiming DU Zhenghong GAO +1 位作者 Chao WANG Qianhuan HUANG 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2019年第4期799-814,共16页
The achievement of laminar flow in the boundary layer at high-speed cruise conditions may further, in addition to shock-wave control, reduce the drag and extend the range of military fighter aircraft. To this end, a f... The achievement of laminar flow in the boundary layer at high-speed cruise conditions may further, in addition to shock-wave control, reduce the drag and extend the range of military fighter aircraft. To this end, a further investigation on transitional boundary-layer flow of fighter wings is needed due to different configurations from the wings used on conventional transport aircraft. In this paper, wind tunnel experiments and numerical simulations were conducted on three-dimensional transition of thin diamond-shaped wings used on advanced fighter aircraft at tran/supersonic design points. A newly proposed correlation of crossflow transition which includes the effect of surface roughness was introduced into the c-Rehttransition model. Predicted results were in good agreement with flow visualizations. Results showed that the strength of the crossflow component grew rapidly around the leading edge because of the severe flow acceleration, just as the same as wings with a large aspect ratio. However, there seemed no regular pattern of instabilitydominance variation in span-wise for a diamond configuration. The dominance of different instability mechanisms strongly depended on the local pressure distribution. Hereby, the research recommended a ‘‘roof-like" shape of pressure distribution to suppress both crossflow and Tollmien-Schlichting(T-S) instabilities. Besides, a sharp suction peak with a serious pressure rise should be cut off to avoid stronger instabilities. Further discussions also revealed an independence of the unit Reynolds number when transition was triggered by T-S instabilities. Aerodynamic force comparisons indicated that further benefit on drag reduction could be expected by including the three-dimensional transition effect into a wing design process. 展开更多
关键词 Boundary layer TRANSITION fighter AIRCRAFT design Supersonic AIRCRAFT WINGS TRANSONIC wing aerodynamics Wind tunnel measurements
原文传递
A Scientist Guerilla Fighter in the Frontiers of Bioinformatics--In Memory of Bailin Hao 被引量:2
18
作者 Jun Yu 《Genomics, Proteomics & Bioinformatics》 SCIE CAS CSCD 2018年第5期307-309,共3页
The well-known physicist and bioinformaticist, Professor,Academician of Chinese Academy of Sciences (the Academy),and the former director of Institute of Theoretical Physics (the Institute; 1990–1994), Mr. Bailin Hao... The well-known physicist and bioinformaticist, Professor,Academician of Chinese Academy of Sciences (the Academy),and the former director of Institute of Theoretical Physics (the Institute; 1990–1994), Mr. Bailin Hao, passed away early this year (March 7, 2018). In the cover of this issue of Genomics,Proteomics&Bioinformatics (GPB), the Editorial Board has decided to publish his art-processed portrait in memory of 展开更多
关键词 A Scientist Guerilla fighter in the Frontiers of Bioinformatics
原文传递
Yu Guiqing(余桂清)─A Devoted Cancer Fighter
19
《Chinese Journal of Integrative Medicine》 SCIE CAS 1999年第2期148-148,共1页
关键词 WM Yu Guiqing TCM A Devoted Cancer fighter
原文传递
TOWARDS A GLOBAL UNDERSTANDING OF THE HUMANE TREATMENT OF CAPTURED ENEMY FIGHTERS
20
作者 Suzannah Linton 《Frontiers of Law in China-Selected Publications from Chinese Universities》 2017年第2期217-277,共61页
The prevailing narrative instructs us that humane treatment of captured enemy fighters is down to white knights from the western parts of the European continent with their codes of chivalry, or alternatively, the Swis... The prevailing narrative instructs us that humane treatment of captured enemy fighters is down to white knights from the western parts of the European continent with their codes of chivalry, or alternatively, the Swiss businessman Henri Dunant. This contribution challenges that narrative for overlooking, or being ignorant of, the way that societies around the world have approached the matter of the captured enemy fighter. Traces of some of the critical principles about humane treatment that we see in our present law can actually be found in much older societies from outside of Europe. A more accurate and representative way of understanding humanitarianism in the treatment of captured enemy fighters can and must be crafted, with the prevailing Euro-centric account balanced with practices, cultures and faiths from elsewhere. The quest to achieve more humane treatment in armed conflict is first and foremost a battle of the intellect. Narratives and conceptualisations that are more inclusive, recognising and appreciating of the ways of the rest of the world are likely to be more effective in communicating humanitarian ideals. This work adopts a new method of approaching the richness and diversity of the treatment of captured enemy fighters over time and space. This new framework of analysis uses six cross-cutting themes to facilitate a broader international and comparative perspective, and develop a more sophisticated level of understanding. The first theme is how older and indigenous societies approached the matter of captured enemy fighters. The second focuses on religions of the world, and what they teach or require. The third section examines the matter of martial practices and codes of ethics for combatants in certain societies. The fourth category engages with colonisation and decolonisation, and regulation (or non-regulation) of the treatment of captives of war. Fifth is the issue of modernisation and the impact it has had on armed forces and fighters, including on the treatment of captives. The final issue is the shift towards formalised agreements, beginning with the first bilateral agreements and then the multilateral codification exercise that began in the mid-19th century and continues to this day. This framework for analysis leads into a final chapter, presenting a fresh and holistic view on the evolution of prisoner of war protections in the international order. It provides a different way of looking at International Humanitarian Law, starting with this effort at a global understanding of the treatment of captured enemy fighters. 展开更多
关键词 International Law International Humanitarian Law capture ENEMY fighters captured enemy fighters prisoners of war humane treatment slavery ransom exchange killing abuse ancient societies indigenous people Hammurabi's Code religion Christianity Islam Hinduism Judaism Buddhism Sikhism martial codes ethical codes cultural norms Japan India West Africa East Africa CRUSADES Western Europe USA Henri Dunant colonisation decolonisation wars of national liberation Geneva Conventions1949 Additional Protocol Additional Protocol context evolution modemisation codification global understanding new perspective
原文传递
上一页 1 2 37 下一页 到第
使用帮助 返回顶部