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GENERALIZED FORELLI-RUDIN TYPE OPERATORS BETWEEN SEVERAL FUNCTION SPACES ON THE UNIT BALL OF C^(N) 被引量:1
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作者 Xuejun ZHANG Yuting GUO +1 位作者 Hongxin CHEN Pengcheng TANG 《Acta Mathematica Scientia》 SCIE CSCD 2024年第4期1301-1326,共26页
In this paper,we investigate sufficient and necessary conditions such that generalized Forelli-Rudin type operators T_(λ,τ,k),S_(λ,τ,k),Q_(λ,τ,k)and R_(λ,τ,k)are bounded between Lebesgue type spaces.In order t... In this paper,we investigate sufficient and necessary conditions such that generalized Forelli-Rudin type operators T_(λ,τ,k),S_(λ,τ,k),Q_(λ,τ,k)and R_(λ,τ,k)are bounded between Lebesgue type spaces.In order to prove the main results,we first give some bidirectional estimates for several typical integrals. 展开更多
关键词 Forelli-Rudin type operator L^(p q s k)(B_(n))space BOUNDEDNEss unit ball
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Euler’s First-Order Explicit Method–Peridynamic Differential Operator for Solving Population Balance Equations of the Crystallization Process
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作者 Chunlei Ruan Cengceng Dong +2 位作者 Kunfeng Liang Zhijun Liu Xinru Bao 《Computer Modeling in Engineering & Sciences》 SCIE EI 2024年第3期3033-3049,共17页
Using Euler’s first-order explicit(EE)method and the peridynamic differential operator(PDDO)to discretize the time and internal crystal-size derivatives,respectively,the Euler’s first-order explicit method–peridyna... Using Euler’s first-order explicit(EE)method and the peridynamic differential operator(PDDO)to discretize the time and internal crystal-size derivatives,respectively,the Euler’s first-order explicit method–peridynamic differential operator(EE–PDDO)was obtained for solving the one-dimensional population balance equation in crystallization.Four different conditions during crystallization were studied:size-independent growth,sizedependent growth in a batch process,nucleation and size-independent growth,and nucleation and size-dependent growth in a continuous process.The high accuracy of the EE–PDDO method was confirmed by comparing it with the numerical results obtained using the second-order upwind and HR-van methods.The method is characterized by non-oscillation and high accuracy,especially in the discontinuous and sharp crystal size distribution.The stability of the EE–PDDO method,choice of weight function in the PDDO method,and optimal time step are also discussed. 展开更多
关键词 Population balance equation CRYsTALLIZATION peridynamic differential operator Euler’s first-order explicit method
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Solving the Olbers’s Paradox, Explaining the “Red-Shift”, and Challenging the Relativities by “Sun Matters Theory” and “Sun Model of Universe”, an Evolution of the Einstein’s Static Universe Model
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作者 Wanpeng Sun 《Natural Science》 2024年第2期7-18,共12页
Olbers’s paradox, known as the dark night paradox, is an argument in astrophysics that the darkness of the night sky conflicts with the assumption of an infinite and eternal static universe. Big-Bang theory was used ... Olbers’s paradox, known as the dark night paradox, is an argument in astrophysics that the darkness of the night sky conflicts with the assumption of an infinite and eternal static universe. Big-Bang theory was used to partially explain this paradox, while introducing new problems. Hereby, we propose a better theory, named Sun Matters Theory, to explain this paradox. Moreover, this unique theory supports and extended the Einstein’s static universe model proposed by Albert Einstein in 1917. Further, we proposed our new universe model, “Sun Model of Universe”. Based on the new model and novel theory, we generated innovative field equation by upgrading Einstein’s Field Equation through adding back the cosmological constant, introducing a new variable and modifying the gravitationally-related concepts. According to the Sun Model of Universe, the dark matter and dark energy comprise the so-called “Sun Matters”. The observed phenomenon like the red shift is explained as due to the interaction of ordinary light with Sun Matters leading to its energy and frequency decrease. In Sun Model, our big universe consists of many universes with ordinary matter at the core mixed and surrounded with the Sun Matters. In those universes, the laws of physics may be completely or partially different from that of our ordinary universe with parallel civilizations. The darkness of night can be easily explained as resulting from the interaction of light with the Sun Matters leading to the sharp decrease in the light intensity. Sun Matters also scatter the light from a star, which makes it shining as observed by Hubble. Further, there is a kind of Sun Matters named “Sun Waters”, surrounding every starts. When lights pass by the sun, the Sun Waters deflect the lights to bend the light path. According to the Sun Model, it is the light bent not the space bent that was proposed in the theory of relativities. 展开更多
关键词 Olberss Paradox sun Matters Theory sun Model of Universe Einstein’s Universe Dark Mass
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Enhancing Operational Efficiency: Exploring the Integration of SOPs Using Virtual Reality and Smart Glasses Technology in Food Manufacturing
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作者 Somil Nishar 《Intelligent Control and Automation》 2023年第3期37-44,共8页
This paper explores the integration of Standard Operating Procedures (SOPs) using virtual reality and smart glasses technology in food manufacturing. The study employs a thorough methodology, combining observational i... This paper explores the integration of Standard Operating Procedures (SOPs) using virtual reality and smart glasses technology in food manufacturing. The study employs a thorough methodology, combining observational insights to develop a comprehensive SOP. Implementation at different firms resulted in significant improvements, reducing product waste and enhancing overall efficiency. The use of virtual reality further augments SOP adoption. The findings underscore SOPs’ transformative influence, offering a tangible solution to challenges in the food production sector. Recommendations include regular SOP reviews and ongoing training for sustained success. Different firms exemplify SOPs as indispensable tools for operational excellence. 展开更多
关键词 smart Manufacturing standard operating Procedures 5s six sigma Lean Manufacturing Augmented Reality smart Glasses Food Manufacturing TR Toppers Industry 4.0
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基于混淆S盒的高维量子同态加密机制
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作者 宋秀丽 周建兵 +3 位作者 廖金伟 邓红耀 刘羽 吴涛 《密码学报(中英文)》 CSCD 北大核心 2024年第5期1003-1017,共15页
在量子同态加密机制中,对密文量子态执行同态评估计算并解密得到的结果与对明文量子态直接评估计算所得的结果相同.现有的量子同态加密机制不仅评估算子的逻辑门种类有限,而且使用单点或多点混淆导致计算开销较大.鉴于此,本文使用量子... 在量子同态加密机制中,对密文量子态执行同态评估计算并解密得到的结果与对明文量子态直接评估计算所得的结果相同.现有的量子同态加密机制不仅评估算子的逻辑门种类有限,而且使用单点或多点混淆导致计算开销较大.鉴于此,本文使用量子随机游走构建了一个混淆S盒并将其应用到高维量子同态加密机制的设计之中.客户端使用高维的Pauli算子对明文量子态加密之后,将密文量子态发送至服务器;服务器从评估算子集合中选取客户端需要的评估算子,配合评估参数对密文量子态执行评估操作,并将评估结果发送至解密方执行解密运算.为了避免服务器在执行评估操作时泄露解密密钥,客户端通过设计的混淆S盒来完成对解密密钥的混淆并将结果传输给解密方.解密方执行逆混淆S盒还原出解密密钥,并使用该密钥执行解密操作得到委托计算结果.对比同类型的相似机制,该机制增加了评估算子的种类,降低了量子混淆S盒的开销;通过仿真实验结果证明了提出机制的正确性,并从信息理论层面证明了该机制的安全性. 展开更多
关键词 量子同态加密 混淆s 高维量子逻辑门 评估算子集合
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Delorme's operation plus sphincteroplasty for complete rectal prolapse associated with traumatic fecal incontinence 被引量:4
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作者 Mohamed M.Osman Walid M.Abd El Maksoud Yosry S.Gaweesh 《The Journal of Biomedical Research》 CAS CSCD 2015年第4期326-331,共6页
Rectal prolapse associated with traumatic fecal incontinence is a rare clinical combination. This study was designed to assess Delorme's operation with sphincteroplasty as a surgical management of this combination in... Rectal prolapse associated with traumatic fecal incontinence is a rare clinical combination. This study was designed to assess Delorme's operation with sphincteroplasty as a surgical management of this combination in terms of recurrence and improvement of fecal incontinence. In this prospective study, we enrolled patients suffering from short, full-thickness rectal prolapse associated with traumatic fecal incontinence who had been admitted to Alexandria Main University Hospital during the period of May 2010-January 2013. Preoperative data including cause of trauma, duration of symptoms, results of anal manometry, and degree of fecal incontinence using Wexner score were collected from all patients. Delorme's procedure with overlap sphincteroplasty was done in all patients. Recurrence of prolapse and improvement of fecal incontinence were assessed after 1, 3, 6 and 12 months. The study included 13 patients aged (32±8.7) years, 9 females and 4 males. Cause of sphincteric injury included previous anal surgery in 7 patients and normal labor in 6 patients. Duration between sphinctefic injury and operation was (8.08±2.47) months. Preoperative Wexner's mean score was 16.07±3.4. Early postoperative complications included superficial wound infection (69.2%), minor wound dehiscence (61.5%), and postoperative bleeding (7.6%). Recurrence was detected in 1 patient at 6 month follow-up. Wexner's score showed significant improvement for all patients after 6 months (4.00±2.04). In conclusion, combination of Delorme's procedure and sphincteroplasty for treatment of patients with short complete rectal prolapse associated with traumatic fecal incontinence is a safe, effective surgical management with satisfactory results regarding anatomical and functional outcomes. 展开更多
关键词 rectal prolapse fecal incontinence Delorme's operation sphincteroplasty.
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Optimization Algorithm for Operation Comfortability of Master Manipulator of Minimally Invasive Surgery Robot 被引量:2
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作者 李进华 王雪生 +3 位作者 邢元 王树新 李建民 梁科 《Transactions of Tianjin University》 EI CAS 2016年第2期95-104,共10页
To evaluate the operation comfortability in the master-slave robotic minimally invasive surgery(MIS), an optimal function was built with two operation comfortability decided indices, i.e., the center distance and volu... To evaluate the operation comfortability in the master-slave robotic minimally invasive surgery(MIS), an optimal function was built with two operation comfortability decided indices, i.e., the center distance and volume contact ratio. Two verifying experiments on Phantom Desktop and Micro Hand S were conducted. Experimental results show that the operation effect at the optimal relative location is better than that at the random location, which means that the optimal function constructed in this paper is effective in optimizing the operation comfortability. 展开更多
关键词 MIs robot master manipulator operation comfortability Phantom Desktop Micro Hand s
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Recording the direct surgeon’s view with an operating microscopic view improves microscopic ophthalmic surgery training
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作者 Masayuki Akimoto Kosei Tomita +1 位作者 Miyo Yoshida Yuki Hama 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2023年第9期1555-1558,共4页
AIM:To establish a recording system with a direct view of the surgeon to supplement video recording under an operating microscope,which lacks information on the movement and position of the surgeon’s hands,and to fac... AIM:To establish a recording system with a direct view of the surgeon to supplement video recording under an operating microscope,which lacks information on the movement and position of the surgeon’s hands,and to facilitate the reproduction of a skilled surgeon’s technique by a surgeon in training.METHODS:A small camera was attached to the operating microscope with a custom adapter.Microscopic surgeon’s view and direct surgeon’s view through this new camera were recorded in the surgical recording system.Both movies were synchronized and analyzed how do surgeons handle the instruments.RESULTS:A small camera attached to the operating microscope allowed the surgeon’s hands motion to be recorded without interfering with the surgeon’s movements.Different surgeons used different methods to manipulate the ultrasound handpiece and the irrigation/aspiration device.Even in the simple paracentesis procedure,different surgeons used different methods.Surgeons-in-training were able to identify and improve their weaknesses by watching synchronized movies of their hand motions and microscopic view.CONCLUSION:Simultaneous recording the surgical field out of the operating microscopic view by a small camera set on the microscope is comprehensive and improves surgeons-in-training understanding and learning surgeries. 展开更多
关键词 operating microscopic view direct surgeon’s view video recording microscopic surgery training
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Inverse Differential Operators in Time and Space
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作者 Edwin Eugene Klingman 《Journal of Applied Mathematics and Physics》 2023年第12期3789-3799,共11页
When one function is defined as a differential operation on another function, it’s often desirable to invert the definition, to effectively “undo” the differentiation. A Green’s function approach is often used to ... When one function is defined as a differential operation on another function, it’s often desirable to invert the definition, to effectively “undo” the differentiation. A Green’s function approach is often used to accomplish this, but variations on this theme exist, and we examine a few such variations. The mathematical analysis of  is sought in the form  if such an inverse operator exists, but physics is defined by both mathematical formula and ontological formalism, as I show for an example based on the Dirac equation. Finally, I contrast these “standard” approaches with a novel exact inverse operator for field equations. 展开更多
关键词 Matrix-Inverse Differential operators Green’s Functions Dirac’s Equation Wave Equations Inverse Curl operator
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国内S Zorb装置运行情况分析
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作者 韩乔昆 艾中秋 王卿 《石油炼制与化工》 CAS CSCD 北大核心 2024年第10期73-78,共6页
介绍了国内S Zorb装置的分布情况以及其中28套工业装置在2023年的运行情况,通过对比不同S Zorb装置的2023年运行数据发现,不同S Zorb装置原料硫含量和烯烃含量、主要操作参数、辛烷值损失、吸附剂活性虽然存在较大的差别,但所有装置均... 介绍了国内S Zorb装置的分布情况以及其中28套工业装置在2023年的运行情况,通过对比不同S Zorb装置的2023年运行数据发现,不同S Zorb装置原料硫含量和烯烃含量、主要操作参数、辛烷值损失、吸附剂活性虽然存在较大的差别,但所有装置均可稳定生产满足国Ⅵ标准的汽油,说明S Zorb装置具有较好的适应性。汇总了2011年以来中国石化S Zorb装置的运行数据,结果发现,中国石化S Zorb装置的原料硫含量波动较大,烯烃含量呈逐年下降趋势,而装置脱硫率基本不变,烯烃饱和反应及辛烷值损失变化较大。 展开更多
关键词 s Zorb 装置分布 运行参数 烯烃
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Verification of an operational ocean circulation-surface wave coupled forecasting system for the China's seas 被引量:5
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作者 WANG Guansuo ZHAO Chang +2 位作者 XU Jiangling QIAO Fangli XIA Changshui 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2016年第2期19-28,共10页
An operational ocean circulation-surface wave coupled forecasting system for the seas off China and adjacent areas(OCFS-C) is developed based on parallelized circulation and wave models. It has been in operation sin... An operational ocean circulation-surface wave coupled forecasting system for the seas off China and adjacent areas(OCFS-C) is developed based on parallelized circulation and wave models. It has been in operation since November 1, 2007. In this paper we comprehensively present the simulation and verification of the system, whose distinguishing feature is that the wave-induced mixing is coupled in the circulation model. In particular, with nested technique the resolution in the China's seas has been updated to(1/24)° from the global model with(1/2)°resolution. Besides, daily remote sensing sea surface temperature(SST) data have been assimilated into the model to generate a hot restart field for OCFS-C. Moreover, inter-comparisons between forecasting and independent observational data are performed to evaluate the effectiveness of OCFS-C in upper-ocean quantities predictions, including SST, mixed layer depth(MLD) and subsurface temperature. Except in conventional statistical metrics, non-dimensional skill scores(SS) is also used to evaluate forecast skill. Observations from buoys and Argo profiles are used for lead time and real time validations, which give a large SS value(more than 0.90). Besides, prediction skill for the seasonal variation of SST is confirmed. Comparisons of subsurface temperatures with Argo profiles data indicate that OCFS-C has low skill in predicting subsurface temperatures between 100 m and 150 m. Nevertheless, inter-comparisons of MLD reveal that the MLD from model is shallower than that from Argo profiles by about 12 m, i.e., OCFS-C is successful and steady in MLD predictions. Validation of 1-d, 2-d and 3-d forecasting SST shows that our operational ocean circulation-surface wave coupled forecasting model has reasonable accuracy in the upper ocean. 展开更多
关键词 operational forecast sea surface temperature mixed layer depth lead time subsurface temperature ocean circulation-surface wave coupled forecast system China's seas
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基于自适应S面算法的小型ROV艏向和深度运动控制研究
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作者 李国虎 周焕银 《机床与液压》 北大核心 2024年第8期34-38,共5页
带缆遥控水下机器人(ROV)系统艏向与深度运动具有强非线性和运行环境不确定性等特点。针对ROV的运动特点,构建运动控制模型并进行化简,通过构建自适应S面控制法对艏向与深度进行控制,并利用Lyapunov的稳定性判据证明该控制法的稳定性,... 带缆遥控水下机器人(ROV)系统艏向与深度运动具有强非线性和运行环境不确定性等特点。针对ROV的运动特点,构建运动控制模型并进行化简,通过构建自适应S面控制法对艏向与深度进行控制,并利用Lyapunov的稳定性判据证明该控制法的稳定性,通过仿真验证了该控制法具有良好的稳定性和控制品质。同时,与S面控制法相比,自适应S面控制具有更好的动态性能与静态性能,调节速度快、稳定性强,能够准确控制ROV运动。 展开更多
关键词 ROV 自适应s面控制 艏向控制 深度控制
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CLINICAL CONCEPTION OF KELLER'S OPERATION FOR HALLUX VALGUS DEFORMITY——A SURVEY OF 112 CASES
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作者 葛茂之 《Medical Bulletin of Shanghai Jiaotong University》 CAS 1993年第2期31-36,共6页
In a long-term follow-up study (average, 6.5 years) of 112 feet (90 pa-tients) subjected to Keller’s operation for hallux valgus deformity, the author observed arelationship between Keller’s operation and the metata... In a long-term follow-up study (average, 6.5 years) of 112 feet (90 pa-tients) subjected to Keller’s operation for hallux valgus deformity, the author observed arelationship between Keller’s operation and the metatarsalgia which was located beneaththe central metatarsal heads. The data showed that the metatarsalgia developed or was ag-gravated in 26 feet (23%), and was eliminated or alleviated in 23 feet (21%) afterKeller’s operation. When more than one-third of the proximal phalanx of the big toe wasresected, the incidence of the metatarsalgia obviously increased following surgery. Theautho rpreferred a "Z" lengthening of the extensor hallucis longus tendon instead ofresecting excessive proximal phalanx. The total incidence of the metatarsalgia was 36%(40 feet) preoperatively and 38% (43 feet) postoperatively. This result indicated thatthere was no obvious difference in the incidence of the preoperative and postoperativemetatarsalgia. No more than one-third of the proximal phalanx of the big toe should beremoved. This seems to reduce the incidence of the metatarsalgia after Keller’s operation.After operation, the three princepal symptoms of hallux valgus deformity, painful bunionand difficulty in shoe-wearing were improved for more than 95% in the 112 feet.Eighty one% of the patients were satisfied with the result of the operation. We considerthat this method is one of the effective operation for correcting the hallux valgusdeformity and it is also important to select suitable patients. 展开更多
关键词 HALLUX VALGUs BUNION METATARsALGIA Keller’s operation
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China's Expanding Participation in the UN Peacekeeping Operations
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作者 Hu Yumin 《Contemporary International Relations》 2009年第6期46-56,共11页
The UN-led peacekeeping operation is a lodestar within the field of current international security.As an important example of her peaceful diplomacy,China has consistently and continuously supported the UN-led peaceke... The UN-led peacekeeping operation is a lodestar within the field of current international security.As an important example of her peaceful diplomacy,China has consistently and continuously supported the UN-led peacekeeping operations since 1998 when China joined the UN peacekeeping Operation Special Committee.The Chinese peacekeepers accomplished their UN-authorized missions successfully.With their impressive professionalism,high spirits,combat capabilities,and outstanding achievements,the Chinese peacekeepers have been highly acknowledged by the UN organizations,the host nations and the international media. 展开更多
关键词 UN China’s Expanding Participation in the UN Peacekeeping operations
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First Forum on China Casting Quality Standards & Overview of Revision History of China's National/Industrial Standards for Foundry Operations
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《China Foundry》 SCIE CAS 2009年第3期276-279,共4页
  Both national and local governments have been paying great attention to the work of industrial standardization with the enormous increase in international trade after China joined WTO. According to the standards r...   Both national and local governments have been paying great attention to the work of industrial standardization with the enormous increase in international trade after China joined WTO. According to the standards revising plan of Standardization Administration Committee of China (SAC),TC54 has already revised a series of national standards and industrial standards for foundry operations,and proposed some new ones. As a result,some old fashioned standards containing low-level techniques have been gradually discontinued or replaced with new versions.…… 展开更多
关键词 In First Forum on China Casting Quality standards Overview of Revision History of China’s National/Industrial standards for Foundry operations GB
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浅析国家药监局加入药品检查合作计划(PIC/S)中广东药监面临的形势与发展展望
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作者 马骏 洪建文 +1 位作者 吴群悦 方维 《中国食品药品监管》 2024年第5期114-121,共8页
国家药监局加入药品检查合作计划(PIC/S)的进程已经进入正式申请阶段,这将加速推动我国药品监管体系国际化现代化发展。本文简要介绍了PIC/S的相关情况,梳理了国家药监局加入该组织的主要进程以及国内近年来在药品GMP检查体系和相关能... 国家药监局加入药品检查合作计划(PIC/S)的进程已经进入正式申请阶段,这将加速推动我国药品监管体系国际化现代化发展。本文简要介绍了PIC/S的相关情况,梳理了国家药监局加入该组织的主要进程以及国内近年来在药品GMP检查体系和相关能力建设方面的工作进展,展望了该形势下广东省药监局联合港澳地区协同推进药品监管能力建设、凝聚自身实践经验、助力国家药品监管和药品产业发展的工作脉络。 展开更多
关键词 药品检查合作计划(PIC/s) 概况 加入进程 面临形势 发展展望
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CNPC's International Operation
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作者 Wu Yaowen(Vice President of CNPC) 《China Oil & Gas》 CAS 1998年第2期100-101,共2页
关键词 CNPC’s International operation In 2010
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China's Oil Firms Refocus Operation
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《China Oil & Gas》 CAS 1999年第2期139-139,共1页
关键词 CN China’s Oil Firms Refocus operation
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Estimates of EAST Operation Window with LHCD by Using a Core-SOL-Divertor Model
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作者 欧靖 甘春芸 叶磊 《Plasma Science and Technology》 SCIE EI CAS CSCD 2014年第10期907-912,共6页
An experimental advanced superconducting tokamak (EAST) operation window with the lower hybrid current drive (LHCD) in H-mode is estimated by using a eore-SOL-divertor (C-S-D) model validated by the present EAST... An experimental advanced superconducting tokamak (EAST) operation window with the lower hybrid current drive (LHCD) in H-mode is estimated by using a eore-SOL-divertor (C-S-D) model validated by the present EAST divertor experiments. The operation window consists of four limits including two usual limits, one of which is the maximum allowable heat load onto the divertor plate, and two additional limits associated with the LHCD. The predictive EAST operation window is not qualified to fulfill its mission for high input power. To extend the operation window, gas puffing and impurity seeding are presented as two effective methods. In addition, the effect of the LHCD current on the operation window is also discussed. Our numerical analysis results provide a reference for the safe operation of EAST experiments with LHCD in future. 展开更多
关键词 operation window C-s-D model numerical analysis
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基于改进D-S证据理论的相控阵雷达作战效能评估
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作者 郑丽莎 尹东亮 王旋 《系统工程与电子技术》 EI CSCD 北大核心 2024年第4期1330-1336,共7页
针对相控阵雷达作战效能评估中战场环境等不确定因素的影响,采用改进Dempster-Shafer(D-S)证据理论对其进行作战效能评估方法的优化。首先,通过构建相控阵雷达作战效能评估指标体系,明确评估指标并赋值权。其次,引入Kulsinski差异和模... 针对相控阵雷达作战效能评估中战场环境等不确定因素的影响,采用改进Dempster-Shafer(D-S)证据理论对其进行作战效能评估方法的优化。首先,通过构建相控阵雷达作战效能评估指标体系,明确评估指标并赋值权。其次,引入Kulsinski差异和模糊熵方法,对传统的D-S证据理论进行改进,减少指标在融合过程中的融合权重不确定性的影响。最后,通过改进D-S证据理论对评估指标进行数据融合,建立评估准确性较高的相控阵雷达作战效能评估模型。通过算例验证分析,所提方法能够有效减少融合过程中的不确定性影响,可实现相控阵雷达作战效能评估的目的,提高作战效能评估精度。 展开更多
关键词 相控阵雷达 Dempster-shafer(D-s)证据理论 作战效能评估 Kulsinski差异 模糊熵
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