• 제목/요약/키워드: Local Connection

검색결과 584건 처리시간 0.033초

IP기반 교통시스템에서 데이터의 신뢰성을 위한 DCCP 개발 (Development of The DCCP for Data Reliability in IP Traffic System)

  • 박현문;서해문;이길용;박수현;김성동
    • 대한임베디드공학회논문지
    • /
    • 제5권1호
    • /
    • pp.7-17
    • /
    • 2010
  • ITS(Intelligent Transport System) as things are used for Broadcast service using TDMB/TPEG/NAVI rather than personal seamless service. It is attaching weight to Traffic information gathering, Charging, Settlement service. This research is applied to improve DCCP(Datagram Congestion Control Protocol) which has function as protecting data and preserving message boundary. The improving method is like that we solve data trust in UDP because Connection and Transmission overhead in UDP is less than in TCP. We fix the data loss which is generated from unordered delivery section of IP base wireless service by using DCCP protocol. We guarantee of connection with OBE(On-Board Equipment) and reliance about transmission of data by complement to mapping table and multi-hoping. Finally, We evaluate the performance about transmission of IP based data. We constructed a test-bed near research center for this test.

소형궤도열차시스템의 국내 적용방안 연구 (The Study on Domestic Application of Personal Rapid Transit(PRT))

  • 이준;김경태;문대섭;이진선
    • 한국철도학회:학술대회논문집
    • /
    • 한국철도학회 2006년도 추계학술대회 논문집
    • /
    • pp.954-963
    • /
    • 2006
  • PRT(Personal Rapid Transit) is alternation mode of auto and advanced transportation system as future transportation mode cope with the situation caused by increasing traffic demand, vehicle, environment, energy problem. but there is no place where PRT is operated therefore it is necessary of study on application of PRT The purpose of this study is putting into shape of fundamental notion and role of PRT as transit system and studying of domestic application possibility We expect that PRT make transit will make variety and be able to connect with mass transportation facility, have a connection between trunk line and branch line, be a effective local transportation system within CBD, be a transportation system within leisure complex. This study focus on connection with mass transportation facility in the middle of 5 type, we class as. and we investigate application of PRT by process of making a choice applicable case area

  • PDF

최적신뢰성에 의한 강구조물의 강접합부 연구 (A Study On Optimum Reliability of Rigid Connection in Steel Structures)

  • 정철원;유한신
    • 한국구조물진단유지관리공학회 논문집
    • /
    • 제5권4호
    • /
    • pp.177-184
    • /
    • 2001
  • In this study, three most distinct types of general rigid connections are included in the modelling, with is implemented into a computer code. The cost, functions of connections are constructed by using the estimated unit cost of bolting, welding and connection-steel elements incorporating all the effect of materials, labor, and fabrication work. Bused on the recent developments of the reliability-based structural analysis and design as well as the extending knowledge on the probabilistic characteristics of load and resistances, the probability based design criteria have been successfully developed for many standards. Since the probabilistic characteristics depend highly on the local load and resistances, it is recognized to develop the design criterion compatible with domestic requirements. The existing optimum design methods, which are generally based on the structural theory and certain engineering experience, do not realistically consider the uncertainties of load and resistances and the basic reliability concepts.

  • PDF

청색증을 동반한 다발성 폐동정맥루 치험 1례 (Multiple Pulmonary Arteriovenous Fistula combined with Cyanosis Report of one Case)

  • 조규도
    • Journal of Chest Surgery
    • /
    • 제18권4호
    • /
    • pp.806-811
    • /
    • 1985
  • Pulmonary arteriovenous fistula is a rare congenital vascular malformation in the lung, resulting from erroneous capillary development, with incomplete formation or disintegration of the vascular septa that would normally divide the primitive connection between the venous and arterial plexus. The pathogenesis of its symptom is that unoxygenated and desaturated arterial blood enter into the pulmonary venous system directly. Recently we have experienced a case of multiple pulmonary arteriovenous fistula in a 15 year old male patient, who presented the symptom of cyanosis and dyspnea on exertion. The operation revealed well circumscribed and multilobulated aneurysmal lesion in left lower lobe with its subpleural and posterolateral basal location, and another aneurysmal lesion in inferior lingular segment of left lung. There was no abnormal connection between the fistula and systemic circulation. The left lower lobectomy was performed along with local extirpation of the inferior lingular segment of left lung. Both lesions showed angiomatous dilatation of the various sized vessels embedded in the parenchyma microscopically. Postoperative clinical course disclosed much improvement in symptoms and in the value of blood gas analysis. The patient was discharged without any complication.

  • PDF

Modeling of progressive collapse of a multi-storey structure using a spring-mass-damper system

  • Yuan, Weifeng;Tan, Kang Hai
    • Structural Engineering and Mechanics
    • /
    • 제37권1호
    • /
    • pp.79-93
    • /
    • 2011
  • A simple mechanical model is proposed to demonstrate qualitatively the pancake progressive collapse of multi-storey structures. The impact between two collapsed storeys is simulated using a simple algorithm that builds on virtual mass-spring-damper system. To analyze various collapse modes, columns and beams are considered separately. Parametric studies show that the process of progressive collapse involves a large number of complex mechanisms. However, the proposed model provides a simple numerical tool to assess the overall behavior of collapse arising from a few initiating causes. Unique features, such as beam-to-beam connection failure criterion, and beam-to-column connection failure criterion are incorporated into the program. Besides, the criterion of local failure of structural members can also be easily incorporated into the proposed model.

Residual Learning Based CNN for Gesture Recognition in Robot Interaction

  • Han, Hua
    • Journal of Information Processing Systems
    • /
    • 제17권2호
    • /
    • pp.385-398
    • /
    • 2021
  • The complexity of deep learning models affects the real-time performance of gesture recognition, thereby limiting the application of gesture recognition algorithms in actual scenarios. Hence, a residual learning neural network based on a deep convolutional neural network is proposed. First, small convolution kernels are used to extract the local details of gesture images. Subsequently, a shallow residual structure is built to share weights, thereby avoiding gradient disappearance or gradient explosion as the network layer deepens; consequently, the difficulty of model optimisation is simplified. Additional convolutional neural networks are used to accelerate the refinement of deep abstract features based on the spatial importance of the gesture feature distribution. Finally, a fully connected cascade softmax classifier is used to complete the gesture recognition. Compared with the dense connection multiplexing feature information network, the proposed algorithm is optimised in feature multiplexing to avoid performance fluctuations caused by feature redundancy. Experimental results from the ISOGD gesture dataset and Gesture dataset prove that the proposed algorithm affords a fast convergence speed and high accuracy.

A Study on the Relationship Between Feminist Art and Fashion in Modern Chinese Art Era

  • Xing, Zhang;Kan, Hosup
    • 패션비즈니스
    • /
    • 제24권6호
    • /
    • pp.18-45
    • /
    • 2020
  • Feminist artists are special in Chinese modern art. Sticking to their own artistic ideas, they constantly emphasize women's psychological characteristics and aesthetic values in their works under the background of modern society. Since feminism was introduced into China from western arts in the 1970s, it has greatly inspired Chinese female artists. This study used comparative analysis and correlation analysis to establish the connection between the works of local Chinese female artists and modern women's wear design, this connection is the common language form of Chinese female artists and modern fashion designers when expressing female psychology and aesthetics. This is a way for Chinese female artists to seek dialogue with Western and global female art, and the development characteristics of the localization of feminism in Chinese art and design. The significance of the research is to improve the international artistic atmosphere of Chinese feminist art and instill a new understanding of Chinese feminist art in the world.

Improving the Stability of Series-Connected Solid Oxide Fuel Cells by Modifying the Electrolyte Composition

  • Kim, Young Je;Lim, Hyung-Tae
    • Journal of Electrochemical Science and Technology
    • /
    • 제12권1호
    • /
    • pp.159-165
    • /
    • 2021
  • YSZ based anode supported solid oxide fuel cells (SOFCs) were prepared, and two cells with different electrolyte thicknesses were connected in series for the simulation of a cell-imbalanced fuel cell stack. Pure YSZ cells in a series connection exhibited a rapid degradation when a thick electrolyte cell was operated under a negative voltage. On the other hand, ceria added-YSZ cells in a series connection were stable under similar operating conditions, and the power density and impedance were about the same as those before tests. The improved stability was due to the reduction of internal partial pressure in the electrolyte by locally increasing the electronic conduction. Thus, we propose a new protection method, i.e., the local addition of ceria in the YSZ electrolyte, to extend the lifetime of a cell-imbalanced SOFC stack.

국내 지자체 공공청사의 공간조직 변화과정에 관한 연구 (A Study on the Evolution of the Spatial Organization appeared in Local Government Buildings in Korea)

  • 최윤경;현창용
    • 한국실내디자인학회논문집
    • /
    • 제20권6호
    • /
    • pp.36-43
    • /
    • 2011
  • The study presupposes that, ever since its modernization, the Korean local government buildings have undergone an evolutionary process of their spatial organizations and the process can be analyzed in terms of increased publicness of architectural space. For the purpose, fifteen examples of local government buildings in Korea are selected and analyzed in terms of their plans converted into spatial diagrams measuring accessibility depth. Within these analytical diagrams, some quantitative measures such as permeability and visual connection, and the number of decision making points that visitors face on the way to their targets. The study analyzes these analytic measures of selected samples which are categorized into three chronological groups in order to search any evolutionary tendency of spatial transformation. The analysis shows that the accessibility of public functions and presumably the publicness of the spatial organization of local government buildings has been increased. The results of the study implies that, to acquire architectural publicness in government buildings, not only the insertion of public programs but also the organization of open spatial structure is significant.

지방자치단체 건축행정 개선방안에 관한 연구 (A Study on the Improvement of Building Administration by Local Government)

  • 김민지;류수연;조영진;유광흠
    • 대한건축학회논문집:계획계
    • /
    • 제33권12호
    • /
    • pp.3-11
    • /
    • 2017
  • The non-mandatory guidance and illogical ordinance of local government generate complicated and vague regulations and procedures. These cause inconvenience in building administration, and give rise to unnecessary social and administrative expenses. The purpose of this study is to suggest the improvement of building administration by local government from an institutional point of view through the literature review and the specialist survey focusing on the problems arising from the building ordinances and non-mandatory guidance. The results of this study are as follows; In the first place, the connection between law and ordinance should be improved in a systematic, definitude manner and high-degree of completion. Second, the monitoring management system should be arranged in order to excavate and improve the non-mandatory guidance. Third, the effort should go into improving ability and disposition of building official. Fourth, it is necessary to materialize and clarify the regulatory contents and adjust them to fit the legal system. Lastly, it is important to reinforce incentives and procedures of verification in order to manage building ordinances of legal government's own free will. In order to improve of building administration by local government, it is necessary to make the structure of sustainable improvement and discuss not only institutional aspect but also elements of building administration in later study.