检索结果-南通市图书馆

Extraction of Behavioural Requirements for Simulation-based Performance Evaluation of Manufacturing Systems

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Science and Systems Engineering 2019年第5期28卷 555-579页

作者： Junpil Kim Hyunbo cho Department of Industrial and Management Engineering Pohang University of Science and Technology(POSTECH) Republic of Korea

A simulation model enables manufacturers to accurately evaluate the performance of their manufacturing systems.A vital input to build simulation models of manufacturing systems is the system behaviour,which is modelled based on extensive data on manufacturing systems and their ***,for outsourced manufacturing systems,data provided from external suppliers to manufacturers are generally limited and ***,a solution is required to identify and secure system behaviour from available *** propose herein a behaviour extraction process along with detailed activities and diagrams to extract system behaviour from limited *** using the systems engineering standard ANSI/EIA-632,the proposed process systematically restructures available data on a manufacturing system and its elements and then provides complete system behaviour to build a simulation model.A case study on a cooling water control system in a hot strip mill convincingly demonstrates the applicability and effectiveness of the proposed process.

关键词： Behaviour extraction manufacturing systems simulation model system behaviour systems engineering

Surface-enhanced Raman spectroscopy for emerging contaminant analysis in drinking water

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

Frontiers of Environmental Science & Engineering 2023年第5期17卷 51-65页

作者： Seo Won cho Haoran Wei Environmental Chemistry and Technology Program University of Wisconsin–MadisonMadisonWI 53706USA Department of Civil and Environmental Engineering University of Wisconsin–MadisonMadisonWI 53706USA

Emerging contaminants(ECs)in drinking water pose threats to public health due to their environmental prevalence and potential *** occurrence of ECs in our drinking water supplies depends on their physicochemical properties,discharging rate,and susceptibility to removal by water treatment *** health effects of long-term exposure to ECs justify their regular monitoring in drinking water *** this review article,we will summarize the current status and future opportunities of surface-enhanced Raman spectroscopy(SERS)for EC analysis in drinking *** principles of SERS are first introduced and a comparison of SERS and liquid chromatography-tandem mass spectrometry in terms of cost,time,sensitivity,and availability is ***,we discuss the strategies for designing effective SERS sensors for EC analysis based on five categories—per-and polyfluoroalkyl substances,novel pesticides,pharmaceuticals,endocrine-disrupting chemicals,and *** addition to maximizing the intrinsic enhancement factors of SERS substrates,strategies to improve hot spot accessibilities to the targeting ECs are equally *** is a review article focusing on SERS analysis of ECs in drinking *** discussions are not only guided by numerous endeavors to advance SERS technology but also by the drinking water regulatory policy.

关键词： Emerging contaminant Surface-enhanced Raman spectroscopy Drinking water monitoring Sensor Regulatory policy

A geometric characterisation of real C^(*)-algebras

在线全文

学校读者我要写书评

暂无评论

Science China Mathematics 2023年第10期66卷 2277-2292页

作者： cho-Ho Chu School of Mathematical Sciences Queen Mary University of LondonLondon E 14NSUK

We characterise the positive cone of a real C^(*)-algebra *** an open coneΩin a real Banach space V,with the closureΩ,we show thatΩis the interior of the positive cone of a unital real C^(*)-algebra if and only if it is a Finsler symmetric cone with an orientable extension,which is equivalent to the condition that V is,in an equivalent norm,the Hermitian part of a unital real C^(*)-algebra with the positive coneΩ.

关键词： real C^(*)-algebra Banach manifold Finsler symmetric cone Jordan algebra

Finite Group Action and Gromov-Witten Invariants in Symplectic Four-Manifolds

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2010年第12期26卷 2325-2334页

作者： Yong Seung cho Department of Mathematics Ewha Womans University

Let a finite group act semi-freely on a closed symplectic four-manifold with a 2-dimensional fixed point set. Then we show that the relative Gromov-Witten invariants are the same as the invariants on the quotient set-... 详细信息

关键词： Finite group action Gromov-Witten invariant symplectic four-manifold

SANDWICH-TYPE THEOREMS FOR MEROMORPHIC MULTIVALENT FUNCTIONS ASSOCIATED WITH THE LIU-SRIVASTAVA OPERATOR

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Scientia 2012年第3期32卷 929-941页

作者： Nak Eun cho Department of Applied Mathematics Pukyong National UniversityBusan 608-737Korea

The purpose of this article is to obtain some subordination and superordi- nation preserving properties of meromorphic multivalent functions in the punctured open unit disk associated with the Liu-Srivastava operator.... 详细信息

关键词： Subordination superordination meromorphic multivalent function Liu- Srivastava operator sandwich-type result

Study on adhesively-bonded surface of tapered double cantilever specimen made of aluminum foam affected with shear force

在线全文

学校读者我要写书评

暂无评论

Journal of Central South University 2015年第12期22卷 4521-4527页

作者：孙洪鹏 cho Jae-ung Division of Mechanical Engineering Graduate School Kongju National University Division of Mechanical and Automotive Engineering Kongju National University

Aluminum foam is widely used in diverse areas to minimize the weight and maximize the absorption of shock energy in lightweight structures and various *** presents a number of advantages,such as low density,incombustibility,non-rigidity,excellent energy absorptivity,sound absorptivity and low heat *** aluminum foam with an air cell structure was placed under the TDCB Mode II tensile load by using Landmark equipment manufactured by MTS to examine the shear failure *** angle of the tapered adhesively-bonded surfaces of specimens was designated as a variable,and three models were developed with the inclined angles differing from one another at 6°,8° and 10°.The specimens with the inclined angles of 6°,8° and 10° have the maximum reaction forces of 168 N,194 N when the forced displacements are 6,5 and 4.2 mm *** are three specimens with the inclined angles of 10°,8° and 6° in the order of maximum reaction *** the analysis result,the maximum equivalent stresses of 0.813 MPa and 0.895 MPa happened when the forced displacements of 6 mm and 5 mm proceeded at the models of 6° and 8°,respectively.A simulation was carried out on the basis of finite element method and the experimental *** results of the experiment and the simulation analysis are shown not different from each other ***,only a simulation could be confirmed to be performed in substitution of an experiment,which is costly and time-consuming in order to determine the shearing properties of materials made of aluminum foam with artificial data.

关键词： adhesive displacement force reaction shearing fracture characteristic tapered double cantilever beam(TDCB)

Direct 4D printing of functionally graded hydrogel networks for biodegradable,untethered,and multimorphic soft robots

在线全文

学校读者我要写书评

暂无评论

International Journal of Extreme Manufacturing 2024年第2期6卷 407-416页

作者： Soo Young cho Dong Hae Ho Sae Byeok Jo Jeong Ho cho Department of Chemical and Biomolecular Engineering Yonsei UniversitySeoul 03722Republic of Korea Department of Mechanical Engineering Virginia TechBlacksburgVA 24061United States of America School of Chemical Engineering Sungkyunkwan UniversitySuwon 16419Republic of Korea SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan UniversitySuwon 16419Republic of Korea

Recent advances in functionally graded additive manufacturing(FGAM)technology have enabled the seamless hybridization of multiple functionalities in a single *** robotics can become one of the largest beneficiaries of these advances,through the design of a facile four-dimensional(4D)FGAM process that can grant an intelligent stimuli-responsive mechanical functionality to the printed ***,we present a simple binder jetting approach for the 4D printing of functionally graded porous multi-materials(FGMM)by introducing rationally designed graded multiphase feeder *** graded cross-linking agents gradually form stable porous network structures within aqueous polymer particles,enabling programmable hygroscopic deformation without complex mechanical ***,a systematic bed design incorporating additional functional agents enables a multi-stimuli-responsive and untethered soft robot with stark stimulus *** biodegradability of the proposed 4D-printed soft robot further ensures the sustainability of our approach,with immediate degradation rates of 96.6%within 72 *** proposed 4D printing concept for FGMMs can create new opportunities for intelligent and sustainable additive manufacturing in soft robotics.

关键词： intelligent and sustainable additive manufacturing multi-material four-dimensional printing untethered soft robot multi-stimuli-responsive soft robot biodegradable soft robotics

Stabilization of 4-manifolds

在线全文

学校读者我要写书评

暂无评论

Science China Mathematics 2014年第9期57卷 1835-1840页

作者： cho YongSeung Division of Mathematical and Physical Sciences College of Natural SciencesEwha Womans University

The complex surface X obtained by 8 points blown up on CP2 and Barlow’s surface Y are homeomorphic,but not *** the Gromov-Witten invariant Ruan showed that the stabilized manifolds X×S2and Y×S2are not deformation *** this note,we show that the stabilized manifolds X×S1and Y×S1are diffeomorphic and non-deformation equivalent in cosymplectic sense.

关键词： cosymplectic manifold symplectic manifold Gromov-Witten invariant h-cobordism Whitehead group deformation

Robust digital receiver for EPC sensor network

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Engineering and Electronics 2013年第1期24卷 44-51页

作者： Cheng Jin Sung Ho cho Department of Electronics and Computer Engineering Hanyang University

A robust digital receiver based on a matched filter （MF） is proposed for the radio frequency identification （RFID） reader system to enhance the reliability of signal processing in the electronic product code （EPC） sensor network （ESN）. The performance of the proposed receiver is investigated by examining the anti-collision algorithm in the EPC global Class1 Generation2 protocol. The validity and usefulness are demonstrated by both computer simulations and experiments. Based on the verification results, comparing with the conventional zero crossing detector （ZCD） based receiver, the proposed receiver is very robust against strong amplitude distortions and considerable frequency deviations happening on the backscattered signal from a passive tag.

关键词： electronic product code (EPC) sensor network (ESN) signal distortion matched filter radio frequency identification (RFID) receiver.