检索结果-南通市图书馆

Harmonic Retrieval in Colored ARMA Noise

在线全文

学校读者我要写书评

暂无评论

Wuhan University Journal of Natural Sciences 2000年第4期5卷 451-456页

作者： Li Sheng-hong Pan Li zhu hong-wen Xue Zhi Shanghai Jiaotong Univ Shanghai China

We propose a new approach to harmonic retrieval in colored ARMA noise. A suitable filter is first used to remove all the sharp power spectrum peaks of the noisy observed process, then some kinds of cross correlation is employed to identify the noise characteristics. After filtering the noisy observed process with the identified noise characteristics again, SVD-TLS method can be applied to retrieve the harmonics. The proposed approach can be used to retrieve real-valued harmonic signals in colored ARMA noise with no restrictions on the phase coupling of harmonics and the distribution of the noise. Simulation examples show its effectiveness.

关键词： ARMA process harmonic retrieval phase coupling correlation

Qingchang decoction retention enema may induce clinical and mucosal remission in left-sided ulcerative colitis: A case report

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2022年第11期10卷 3573-3578页

作者： Pei-Han Li Yu Tang hong-zhu wen Department of Gastroenterology Longhua Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai 200032China Department of Basic Medicine Fudan UniversityShanghai 200032China

BACKGROUND Ulcerative colitis(UC)is a chronic autoimmune disease characterized by relapsing-remitting abdominal pain,diarrhea,mucopurulent discharge and rectal *** date,the etiology of the disease remains unknown;therefore,medical therapy is not yet ***-sided UC is mainly treated with oral and topical ***,due to its modest clinical effect,endoscopic mucosal remission is not achieved in all *** SUMMARY A 44-year-old man presented to Longhua Hospital with a history of left-sided UC for more than 6 years and slight bloody diarrhea over *** suggested hyperemia,edema,and erosive mucosa involving the rectum and sigmoid *** Traditional Chinese medicine Qingchang decoction(QCD)enema treatment was initiated once a day combined with a previous standard dose of mesalazine for 8 wk,and rectal bleeding ceased after 4 wk of *** QCD enema treatment was provided after symptom relapse due to drug withdrawal for nearly 6 *** the 2-mo follow-up,the colonoscopy results indicated mucosal healing with no erosion or *** The Chinese formula QCD retention enema represents a potential treatment for left-sided UC with predominant rectal bleeding to achieve clinical and mucosal remission.

关键词： Ulcerative colitis Chinese formulas Qingchang decoction enema Qingchang suppository Case report

Air-Decking Technique in Bench Blasting

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of China University of Mining and Technology 2006年第2期16卷 184-188页

作者： zhu hong-bing LU wen-bo WU Liang Key Laboratory of Water Resource and Hydropower Engineering Science Wuhan University Wuhan Hubei 430072 China

The mechanism and the design parameters of blasting with air-decking are studied. The theory of detonation waves is used to investigate the processes of the one-dimensional plane detonation wave within a borehole. The interac- tion of the rarefaction wave with an interface and reflection on a rigid wall is also analyzed. The same courses of the shock wave are also investigated. This decides the distribution of the pressure of the explosion products changing with time along the borehole. Based on the above theoretical analysis, two conditions should be met for a reasonable range of values of the air-decking ratio in blasting rock. First, the rarefaction wave from the contact interface between detonation products and air reaches the bottom earlier than that of the reflected shock wave from the end of the stemming. Second, the reflected shock wave reaches the contact interface between the detonation products and air earlier than that of the reflected rarefaction wave from the bottom of the borehole. Finally, the reasonable value of the air-decking ratio must be decided theoretically in air-decking blasting. For different explosives, the reasonable range of air-decking ratio varies from 0.15 to 0.4. This result is well consistent with what was obtained by previous researchers.

关键词： air-decking technique bench blasting detonation wave air-decking ratio

A Routing Algorithm in WDM Mesh Networks with Grooming Capacities

在线全文

学校读者我要写书评

暂无评论

Wuhan University Journal of Natural Sciences 2005年第5期10卷 873-876页

作者： WANG Qiang-min RONG Meng-tian zhu hong-wen School of Information Security Engineering Shanghai Jiaotong University Shanghai 200030 China Modern Communication Institute Shanghai Jiaotong University Shanghai 200030 China

Most of the work in traffic grooming has been in the area of providing efficient network designs in Wavelength division multiplexing （WDM）. The objective of these traffic grooming algorithms is to reduce the cost of overall networks. In this paper, a routing algorithm based on transiently chaotic neural network is proposed to solve the problem in WDM logical topology. The objectives of the routing algorithm are ac commodating all traffic requirements and using less network resource. The simulation shows that the proposed algorithm is efficient in the routing selection, meanwhile the algorithm can use less network resource.

关键词： wavelength division multiplexing optical communication network traffic grooming routing

Neural Network Based Scheduling for Variable-Length Packets in Gigabit Router with Crossbar Switch Fabric and Input Queuing

在线全文

学校读者我要写书评

暂无评论

Wuhan University Journal of Natural Sciences 2002年第3期7卷 313-318页

作者： Li Sheng\|hong, Xue Zhi, Li Jian\|hua, zhu hong\|wen Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200030, China Department of Electronic Engineering Shanghai Jiaotong University Shanghai China

A high-speed and effective packet scheduling method is crucial to the performance of Gigabit routers. The paper studies the variable-length packet scheduling problem in Gigabit router with crossbar switch fabric and input queuing, and a scheduling method based on neural network is proposed. For the proposed method, a scheduling system structure fit for the variable-length packet case is presented first, then some rules for scheduling are given. At last, an optimal scheduling method using Hopfield neural network is proposed based on the rules. Furthermore, the paper discusses that the proposed method can be realized by hardware circuit. The simulation result shows the effectiveness of the proposed method.

关键词： Key words scheduling neural networks input queuing gigabit router

Frequency characteristic of series piezoelectric sensor and application to the determination of water in organic solvents

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 1994年第1期12卷 58-65页

作者： SHEN, Da-Zhong zhu, wen-hong NIE, Li-Hua YAO, Shou-Zhou New Material Research Institute, Hunan University, Changsha, Hunan 410082, China New Material Research Institute Hunan University Changsha Hunan 410082 China

Theoretical consideration was proposed for the frequency response of a series piezoelectric sensor to the properties of liquid and verified experimentally. This kind of sensor has sensitive and selective frequency response to the permittivity and specific conductivity of solution with excellent stability, and was applied to the determination of micro-content of water in organic solvents. The detection limit is 0.01 g/L in dioxane.

关键词： Piezoelectric quartz crystal chemical sensor micro-water-content

Sequence-activated chemiluminescence probes: programmable illumination for high-contrast in vivo sensing and imaging

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2025年第1期68卷 26-34页

作者： Yutao Zhang Juan Li Wei-hong zhu Zhiqian Guo Shanghai Key Laboratory of Functional Materials Chemistry Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Institute of Fine Chemicals School of Chemistry and Molecular Engineering East China University of Science and Technology State Key Laboratory of Bioreactor Engineering Shanghai Frontier Science Research Base of Optogenetic Techniques for Cell MetabolismEast China University of Science & Technology

Sequence-activated chemiluminescence(CL) technique offers a unique approach to detecting specific biomolecules or cellular events with high sensitivity and spatial resolution. The fundamental principle behind sequence-activated CL probes involves tailoring highly-controllable CL signals in response to specific sequences or events of interest, thus enabling high-contrast signals under complex physiological conditions. This sequential activation could be triggered by enzymes, reactive oxygen species(ROS), biothiols or changes in the microenvironment. These unique sequence-activated CL probes bestow several advantages, including minimal background, deep-tissue penetration, and the ability of non-invasive or minimally invasive detection. The sequence-activated CL techniques represent a significant advancement in molecular imaging and diagnostics. In this mini-review, we focus on the latest developments in sequential CL probes, addressing the technical challenges and discussing the future trajectory by harnessing CL signaling and molecular recognition.

关键词： chemiluminescnece sequence-activation in-vivo bioimaging cyclic peroxide

A New Approach to VC Routing in ATM Networks

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Wuhan University Journal of Natural Sciences 2000年第3期5卷 329-333页

作者： Li Sheng-hong Du Xin-hua zhu hong-wen Liu Ze-min Department of Electronic Engineering Shanghai Jiaotong University Shanghai China Department of Radio Engineering Beijing University of Posts and Telecommunications Beijing China

A new ant-algorithm-based routing approach is proposed for the VC routing problem with considering the comprehensive effect between the resource utilization and the load balance in ATM networks. In the approach, the backup paths are calculated first, and then an ant algorithm based on the ability of ants to find the shortest path between their nest and the food source during their searching food, is constructed to optimize the VC global route. Simulation results show that the proposed approach can realize VC routing effectively according to the current traffic states in the networks and the user-specified delay requirements.

关键词： ATM networks virtual channel (VC) ant algorithm routing

在线全文

学校读者我要写书评

暂无评论

设计哲学的性质、视野和意义

北京师范大学学报（社会科学版） 2010年第6期 72-79页

作者：朱红文北京师范大学哲学与社会学学院北京100875

设计作为一种发源于或基于生产劳动的广义的创造活动,与人类的认识活动和能力一样,是人类的基本活动及其内在机制之一。传统哲学中的认识论主义和先验的道德主义,使得哲学基本上丧失对这一基本人类活动领域的洞察力,这是哲学的一个严重... 详细信息

设计作为一种发源于或基于生产劳动的广义的创造活动,与人类的认识活动和能力一样,是人类的基本活动及其内在机制之一。传统哲学中的认识论主义和先验的道德主义,使得哲学基本上丧失对这一基本人类活动领域的洞察力,这是哲学的一个严重的疏漏和错误,但这种错漏的根源在于社会历史本身的局限性。在工业社会和高技术时代,设计或广义的创制活动越来越成为工业世界以及整个人类社会的存在基础。探讨设计和创制活动的机制和社会文化意义,不仅可以恢复哲学应有的宽阔视野和文化活力,而且对于理解和应对当代社会和文化的诸多矛盾将发挥极其重要的作用。

关键词：设计设计哲学研究