检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

麻省理工的“找钱经”

科学新闻 2011年第7期 34-36页

作者： david kaiser 美国麻省理工学院

150年前创立的麻省理工学院,曾经走过经费拮据的困窘时期。经由有经验主事者的掌舵,终于走出一个兼顾生存和知识自主的大学募款典范模式。150年前,1861年的4月10日,麻省理工学院收到创校的许可证。虽然它很难称得上是英美世界里最古老... 详细信息

150年前创立的麻省理工学院,曾经走过经费拮据的困窘时期。经由有经验主事者的掌舵,终于走出一个兼顾生存和知识自主的大学募款典范模式。150年前,1861年的4月10日,麻省理工学院收到创校的许可证。虽然它很难称得上是英美世界里最古老的高等教育机构,哈佛大学当时早就进入创始后的第三个世纪,而英国剑桥大学和牛津大学都已经到建校第八个世纪的初叶,不过麻省理工学院迅速成为领导

关键词：麻省理工学院美国许可证马萨诸塞理工学院美利坚合众国北美洲联邦政府莫里尔法案校园赞助商校友科技计划茶党自主权

Comparisons of oxbow lake fish assemblages in relation to bigheaded carp establishment in the lower White River, Arkansas

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Ecological Processes 2024年第1期13卷 188-205页

作者： Michael A.Eggleton Cody J.Salzmann Joseph E.kaiser Shannon C.F.Smith Department of Aquaculture and Fisheries University of Arkansas at Pine Bluff Arkansas Game and Fish Commission Virginia Institute of Marine Science

Background Since the late 1990s, bigheaded carps(largely silver carp [Hypophthalmichthys molitrix] but also bighead carp [H. nobilis]) have established throughout the lower Mississippi River basin. Using previously studied oxbow lakes in the lower White River basin, Arkansas, we compared current(2017, “post-carp” establishment) fish assemblages to historical(2002, “pre-carp” establishment) fish assemblages. Fish assemblages were comprehensively assessed using multiple gears, including boat electrofishing, mini-fyke nets, and experimental small-mesh gill *** T-tests suggested that fish assemblage indices of richness, diversity, evenness, and dominance were often greater(P 0.05) between the pre-carp and post-carp period with fish assemblages depicted using mini-fyke nets. Nonmetric multidimensional scaling analyses indicated that fish assemblages differed structurally between pre-carp and post-carp periods. Assemblage differences were linked to both small and large abundance changes for more than 20 species. Abundances of gizzard shad(Dorosoma cepedianum), emerald shiner(Notropis atherinoides), pugnose minnow(Opsopoeodus emiliae), crappies(Pomoxis spp.), bluegill(Lepomis macrochirus), orangespotted sunfish(L. humilis), and yellow bass(Morone mississippiensis) declined between the pre-carp and postcarp periods. Conversely, abundances of weed shiner(N. texanus), pallid shiner(Hybopsis amnis), longear sunfish(L. megalotis), buffalofishes(Ictiobus spp.), and gars(Lepisosteus spp.) generally increased during the same *** Although not possible to conclude assemblage shifts were entirely related to bigheaded carps due to the absence of an appropriate reference system where carps did not establish, the wide establishment of these carps is one of the most pervasive changes to have occurred in the lower White

关键词： Bigheaded carp Silver carp Aquatic nuisance species Fish assemblage Oxbow lake Large river

Dual-Functional Electrode Promoting Dendrite-Free and CO_(2) Utilization Enabled High-Reversible Symmetric Na-CO_(2) Batteries

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2024年第3期7卷 123-132页

作者： Changfan Xu Jiajia Qiu Yulian Dong Yueliang Li Yonglong Shen Huaping Zhao Ute kaiser Guosheng Shao Yong Lei Fachgebiet Angewandte Nanophysik Institut für Physik&IMN MacroNanoTechnische Universität Ilmenau 98693Ilmenau Germany Central Facility for Electron Microscopy Electron Microscopy Group of Materials ScienceUlm UniversityUlm 89081Germany School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China

Sodium-carbon dioxide(Na-CO_(2))batteries are regarded as promising energy storage technologies because of their impressive theoretical energy density and CO_(2)reutilization,but their practical applications are restricted by uncontrollable sodium dendrite growth and poor electrochemical kinetics of CO_(2)*** suitable multifunctional electrodes for dendritefree anodes and kinetics-enhanced CO_(2)cathodes is considered one of the most important ways to advance the practical application of Na-CO_(2)***,RuO2 nanoparticles encapsulated in carbon paper(RuCP)are rationally designed and employed as both Na anode host and CO_(2)cathode in Na-CO_(2)*** outstanding sodiophilicity and high catalytic activity of RuCP electrodes can simultaneously contribute to homogenous Na+distribution and dendrite-free sodium structure at the anode,as well as strengthen discharge and charge kinetics at the *** morphological evolution confirmed the uniform deposition of Na on RuCP anode with dense and flat interfaces,delivering enhanced Coulombic efficiency of 99.5%and cycling stability near 1500 ***,Na-CO_(2)batteries with RuCP cathode demonstrated excellent cycling stability(>350 cycles).Significantly,implementation of a dendrite-free RuCP@Na anode and catalytic-site-rich RuCP cathode allowed for the construction of a symmetric Na-CO_(2)battery with long-duration cyclability,offering inspiration for extensive practical uses of Na-CO_(2)batteries.

关键词： CO_(2)cathode dendrite free electrocatalysis Na metal anode symmetric CO_(2)batteries

Turning Trash into Treasure: Developing an Intelligent Bin for Plastic Bottle Recycling

在线全文

学校读者我要写书评

暂无评论

Journal of Social Computing 2024年第1期5卷 1-14页

作者： Sirajam Munira Niloy Paul Md Ashraful Alam Md.Mahmudur Rahman M.Shamim kaiser Institute of Information Technology Jahangirnagar UniversityDhaka 1342Bangladesh

Plastic pollution has emerged as a major global concern due to its enduring nature and limited recycling *** response to this critical challenge,this paper presents a novel approach utilizing a Detection-Based Reward System(DBRS)alongside an innovative business model to promote effective plastic waste management,reduce plastic waste accumulation in the nature,and uphold environmental *** the YOLOv5 algorithm for its exceptional accuracy,speed,and open-source availability,plastic bottle detection becomes a pivotal aspect of this *** seamlessly enroll in the system,triggering an automated detection process that computes reward points corresponding to their deposited plastic *** reward points are meticulously stored within a centralized *** its operational facets,this comprehensive system encompasses a robust business model,strategically poised to capture widespread engagement with waste disposal practices,thereby contributing to the realization of Sustainable Development Goals(SDGs)geared towards fostering a healthier ***,the DBRS attains cutting-edge performance in plastic bottle detection,boasting an impressive mean Average Precision(mAP)of 0.973,underscoring its efficacy in tackling plastic pollution.

关键词： smart environment reward system YOLOv5 deep learning business model

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

美国悲剧肯尼迪、约翰逊导演的越南战争

Reflections on four decades of physical activity epidemiology

丛书名：哈佛版世界战争纪实

2001年

作者：（美）戴维·凯泽（david kaiser）邵文实王爱松译

本书真实地展现了肯尼迪、约翰逊等白宫统治集团是怎样一步步地将越南人民同时也将美国人民带入到一场战争悲剧中的。

ISBN: (数字)7800406040

ISBN: (纸本)7800406040

本书真实地展现了肯尼迪、约翰逊等白宫统治集团是怎样一步步地将越南人民同时也将美国人民带入到一场战争悲剧中的。

关键词：文学美洲文学

来源：汇雅图书（南通市图书馆... 评论

在线全文

汇雅图书（南通市图书馆）

学校读者我要写书评

暂无评论

Journal of Sport and Health Science 2024年第5期13卷 608-610页

作者： Barbara Sternfeld david R.Jacobs Jr. Division of Research Kaiser Permanente Northern CaliforniaOaklandCA 94610USA Division of Epidemiology and Community Health School of Public HealthUniversity of MinnesotaMinneapolisMN 55454USA

In 1985,Public Health Reports published a series of papers prepared for a workshop sponsored by the Centers for Disease Control and Prevention(CDC).1 Building on the seminal work of Jeremy Morris and Ralph Paffenbarger Jr.,who were among the first to use epidemiological methods to study physical activity(PA),2,3 the workshop itself was the result of a growing scientific understanding of the importance of“physical fitness and exercise for improving the health of the public”.

关键词： semi workshop Ralph

Research and development of VUV optical coatings for micro mirror applications

在线全文

学校读者我要写书评

暂无评论

光学精密工程 2005年第4期13卷 465-470页

作者： Alexandre Gatto Norbert kaiser Fraunhofer IOF Albert-Einstein-Str. 7 D-07745 Jena GermanyFraunhofer IOF Albert-Einstein-Str. 7 D-07745 Jena Germany

This paper deals with vacuum UV optical coatings for micro mirror applications. High reflecting low-stress optical coatings have been developed for the next-generation of micro mechanical mirrors. The optimized metal systems are applicable in the VUV spectral region and can be integrated in the technology of MOEMS, such as spatial light modulators (SLM) and micro scanning mirrors.

关键词： VUV 光学涂覆技术微镜技术薄膜调节器

A review of refinery complexity applications

在线全文

学校读者我要写书评

暂无评论

Petroleum Science 2017年第1期14卷 167-194页

作者： Mark J. kaiser Center for Energy Studies Louisiana State UniversityEnergy Coast and Environment Building Baton RougeLA 70803 USA

Refinery complexity quantifies the sophistication and capital intensity of a refinery and has found widespread application in facility classification, cost estimation, sales price models, and other uses. Despite the ubiquity and widespread use of refining complexity, however, surprisingly little material has been written on its applications. The pur- pose of this review is to describe the primary applications of refinery complexity and some recent extensions. A secondary purpose of this review is to provide a framework that unifies complexity applications and suggests avenues for future research. Examples illustrate the applications considered.

关键词： Cost estimation Functional complexityInverse problem Replacement cost Refineryclassification Sales price models

Evolution and future of laparoscopic colorectal surgery

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2014年第41期20卷 15119-15124页

作者： Andreas M kaiser Department of Colorectal Surgery Keck School of MedicineUniversity of Southern California

The advances of laparoscopic surgery since the early 1990 s have caused one of the largest technical revolutions in medicine since the detection of antibiotics(1922,Flemming),the discovery of DNA structure(1953,Watson and Crick),and solid organ transplantation(1954,Murray).Perseverance through a rocky start and increased familiarity with the chop-stick surgery in conjunction with technical refinements has resulted in a rapid expansion of the indications for minimally invasive ***-related factors initially contributed to this success and included the improved postoperative recovery and cosmesis,fewer wound complications,lower risk for incisional hernias and for subsequent adhesionrelated small bowel obstructions; the major breakthrough however came with favorable long-term outcomes data on oncological *** future will have to determine the specific role of various technical approaches,define prognostic factors of success and true progress,and consider directing further innovation while potentially limiting approaches that do not add to patient outcomes.

关键词： Laparoscopic Laparoscopy Open surgery Colorectal surgery Colectomy Robot