• 제목/요약/키워드: Interior Point Method

검색결과 285건 처리시간 0.031초

Quantification Model Development of Human Accidents on External Construction Site by Applying Probabilistic Method (확률론적 기법을 활용한 건설현장 외부 인명피해 정량화 모델 개발)

  • Ha, Sun-Geun;Kim, Tae-Hui;Son, Ki-Young;Kim, Ji-Myong;Son, Seung-Hyun
    • Journal of the Korea Institute of Building Construction
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    • 제18권6호
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    • pp.611-619
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    • 2018
  • The researches have only conducted regarding construction safety management and risk on interior construction site(workers) and is insufficient about the exterior construction site(third party). As a result, ordinary people who were near construction sites have injured and hold a negative view when they think about the construction industry because construction industry have been exposed to them having a high accidents rate through media. In addition, the importance of industrial disaster prevention is emphasized at this point in time, the overall safety management system should be constructed with considering construction site external(third human) for improving the negative image of the construction industry among ordinary people. Therefore, the objective of this study is to develop the quantification model of human accident utilizing the insurance claim payout occurred construction site exterior(third party). In the future, it can be used as a reference for developing the safety management checklist in construction site interior exterior and development for forecasting control system of human accident.

A Study about medical doctors of the school of Seowon (서원학파(西源學派) 의가(醫家)에 관(關)한 연구(硏究))

  • Yoon, Chang-Yeol
    • Journal of Korean Medical classics
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    • 제26권3호
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    • pp.1-9
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    • 2013
  • Objective : In South Song era, Choe Ga-eon(崔嘉彦) built Seowonam(西源庵), lived as a hermit and communicated with Juja(朱子) in LuShan(廬山), JiangXi province(江西省), JiuJiang city(九江市). Maekgyeol(脈訣) written by him significantly influenced the forthcoming medical doctors, who took over his studies and were called the school of Seowon. Little information about his life and his successors encouraged this study. Method : The core contents of Maekgyeol(脈訣), his life based on Waryongamgi(臥龍庵記) and Seowongamgi(西源庵記) written by Juja(朱子) and his successors on the basis of various medical books were investigated. Result : The Seowonam(西源庵) is located at the entrance of xiufeng Scenic spot(秀峰景區) which is 6km west from center of Xingzi county(星子縣), JiangXi province(江西省), JiuJiang city(九江市). The points of Maekgyeol(脈訣) are inferring the symptom of wind, energy, cold and heat by categorizing seven exterior and eight interior pulse into four pulses of float, sink, slow and quick and diagnosing a disease of three warmer and the five viscera and the six entrails by subordinating four pulses to Chon, Gwan, and Cheok(寸關尺). By writing the book of Sawonron(四原論) he clarified the clinical point, pulse, disease, symptom, treatment with learning the cause of a disease through pulse, understanding the symptom through a disease, and giving a remedy through a symptom. Then he communicated with Juja(朱子) assigned to NanKangJun(南康軍) as a ruler. He helped Juja(朱子) to build Waryongam(臥龍庵) and Juja(朱子) wrote Seowonamgi(西源庵記) for him. Conclusion : The members of medical doctors of the school of Seowon were Choe Ga-eon(崔嘉彦) and his follower Yu Gae(劉開), Yugae's disciple Eom Yong-hwa(嚴用和) and Ju Jong-yang(朱宗陽) and Ju Jong-yang's disciple Jang Do-jung(張道中). They, who were famous for pulse, had contributed to advancing study of pulses in the field of oriental medicine.

Design of Robust Fuzzy Controllers via Inverse Optimal Approach (역최적화 방법을 이용한 강인한 퍼지 제어기의 설계)

  • 곽기호;임재환;박주영
    • Journal of the Korean Institute of Intelligent Systems
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    • 제11권6호
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    • pp.477-486
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    • 2001
  • In this paper , we study the problem of designing TS(Takagi-Sugeno) fuzzy controllers for the systems that can be approximated or represented by the TS fuzzy model. The main strategy used in this paper is the inverse optimal approach, in which the cost function is determined later than the Lyapunov function and its corresponding control input satisfying the design requirements such as stability, decay rate, and robustness against uncertainty. This approach is useful because it yields controllers satisfying the inherent robustness of optimal controllers as well as the considered design goals. The design procedures established in this paper are all in the from of solving LMIs(Iinear matrix inequalities). Since the LMIs arising in the design procedures can be solved within a given tolerance by the interior point methods. the design method of the paper are efficient in practice. The applicability of the proposed design procedures is demonstrated by design examples.

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A CASE STUDY ON DEVELOPING A DESIGN OF OIL FAN HEATER - With a focus on '92 GoldStar Co Oil fan heater - (석유 팬 히터 디자인 개발 사례 연구 - '92금성사 석유팬 히터를 중심으로 -)

  • 오성진
    • Archives of design research
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    • 제6권1호
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    • pp.47-72
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    • 1993
  • Nowadays conmpetltlOn of developing new products is getting keen. We can notice that the role and importance of design are emphasized more than ever.The main cause of this tendency is that technical power is no more a factor which secures the superiority in products competition, as technology is gneneralized in the world. Therefore, design is recognized intensely as a competitive strategy to promote competitive power of products. It is an already known fact that the design for both rational function and charming form to satisfy consumer's desires is a short cut to success, when a company develops a new product to promote competitive power in market. The design which plays a leading role in the activity of developing more cnovenient, more economical and more aesthetic products is called 'Competitive Edge' or 'New Corporate Weapon'. Judging form each company's case of developing products, we can guess that it has its own plan and process of developing new products with defferdnl interest and effort. The strategy of developing products is considered as the most important factor that affects the very existence of rhe company. This thesis is composed of six chapters in all. In the firstchapter, I describe the purpose, method, and scope of study.The second chapter includes the image of form in oil fan heater market in nearby Japan and that of interior in our domestic home and shops, and the trend of word life cycle by analyzing circumstances. The third chapter focuses on consumer's attitude. In the fourth chapter, I compare and test current products of competitive companies including Samsung, Daewoo, Shinilwith those of Gold STar. The trend of products, technique, and design which resulted form this comparison is described. In the fifth chapter I explain the strategy, and process of design of oil fan heater in 1992. The last conclusive chapter presents the major point drawed form the case study, but not includes an estimation of products and the condition of market. In this thesis, I reconsider the general understanding of design and designing process and the value of design as a main factor in the strategy of management by investigating the development of products and the strategy of design, and the process of design.

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Forces and Displacements of Highrise Braced Frames with Facade Riggers (여러개의 파사드리거를 갖는 고층구조물의 응력과 변위)

  • Yuk, Min-Hye;Jung, Dong-Jo
    • Journal of the Computational Structural Engineering Institute of Korea
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    • 제18권2호
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    • pp.181-190
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    • 2005
  • In the conventional outrigger system, the outriggers are located in the planes of the core walls and this system has disadvantage of obstructing flexibility in the interior layout. But thc facade riggers in the structure uc located In the exterior frames in the direction of the lateral loading. The interaction between the traced frames and facade riggers is through the floor diaphragms adjacent to the chords of the riggers. This paper presents an approximate analysis technique lot preliminary analysis of multiple facade rigger stiffened braced frames in tall buildings subjected to uniformly and triangularly distributed loads as well as a lateral point load at the top of the structure. Comparisons with the results by the program MIDAS for the structural models have shown that this analysis can give reasonably accurate results for highrise braced frames with multiple facade riggers. The method allows a simple procedure for obtaining the optimum level of the facade riggers in addition to a rapid assessment of the influence of the facade riggers on the performance of the highrise structure such as the reduction in lateral deflection at the top and the overturning moment at the base of the braced frame.

Geolocation Spectrum Database Assisted Optimal Power Allocation: Device-to-Device Communications in TV White Space

  • Xue, Zhen;Shen, Liang;Ding, Guoru;Wu, Qihui
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제9권12호
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    • pp.4835-4855
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    • 2015
  • TV white space (TVWS) is showing promise to become the first widespread practical application of cognitive technology. In fact, regulators worldwide are beginning to allow access to the TV band for secondary users, on the provision that they access the geolocation database. Device-to-device (D2D) can improve the spectrum efficiency, but large-scale D2D communications that underlie TVWS may generate undesirable interference to TV receivers and cause severe mutual interference. In this paper, we use an established geolocation database to investigate the power allocation problem, in order to maximize the total sum throughput of D2D links in TVWS while guaranteeing the quality-of-service (QoS) requirement for both D2D links and TV receivers. Firstly, we formulate an optimization problem based on the system model, which is nonconvex and intractable. Secondly, we use an effective approach to convert the original problem into a series of convex problems and we solve these problems using interior point methods that have polynomial computational complexity. Additionally, we propose an iterative algorithm based on the barrier method to locate the optimal solution. Simulation results show that the proposed algorithm has strong performance with high approximation accuracy for both small and large dimensional problems, and it is superior to both the active set algorithm and genetic algorithm.

The Characteristics of the winter season window and indoor temperature due to the indoor plant (동계 이중외피와 내부식재에 의한 실내 온도 특성에 관한 연구)

  • Yun, Young-Il;Cho, Ju-Young
    • KIEAE Journal
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    • 제15권5호
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    • pp.107-112
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    • 2015
  • Purpose: This study desires to investigate an effect of indoor temperature, humidity, and illuminance targeting a planting system of double-skin facade and cavity space adjacent to the outside within a certain period of winter. Through this, the study suggests a basic material about an energy conservation effect of double window system using planting to reduce heating load of a building in winter, so desires to contribute to indoor thermal comfort effect and illuminance correction study of double window and indoor plant. Method: Considering effects such as day and night climatic elements and air conditions in winter, illuminance measurement was conducted through a double-skin facade of space, a subject of the measurement, on the basis of practical residence time of a resident, and this study analyzed characteristics of indoor illuminance about this. The study measured and compared a change of insolation, dry-bulb temperature, and relative humidity at each indoor-outdoor measuring point, so measured and compared characteristics of an indoor temperature effect by elements of double-skin facade and indoor plant. Result: Through this study, the researcher could determine that indoor plant within double window in winter not only blocks solar radiation but also photosynthesizes, so is somewhat disadvantageous to winter thermal comfort reducing heating load. In addition, solar radiation going through interior plays a role to bring down somewhat high humidity to about 50% of reasonable humidity, so plays a direct role of maintenance of comfortable indoor space. Although there are effects such as blocking of solar radiation and temperature reduction, this has a positive influence on humidity control and proper illuminance distribution. The researcher could determine that illuminance, temperature, and humidity by solar radiation penetration for the whole measuring time play a role to supplement indoor environment mutually.

Mechanical Properties and Sound Absorption Capability of Shipbuilding Plywood Waste (조선산업 폐합판의 강도적 성질과 흡음성능)

  • Kang, Chun-Won;Kim, Gwang-Chul;Park, Hee-Jun;Kang, Wook
    • Journal of the Korean Wood Science and Technology
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    • 제38권6호
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    • pp.457-462
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    • 2010
  • Sound absorption capability and bending strength of laminated ship-building plywood waste of maple and melanti wood were estimated. Sound absorption coefficients of wood had been measured by the two microphone transfer function method and bending strength examined by three point loading. The maximum strength in bending of laminated ship-building plywood waste of maple and melanti wood were 534 and 414 kgf/$cm^2$, respectively. The sound absorption coefficients of laminated ship-building plywood waste were higher than mongolian oak and fiber board, well used construction material. Especially, in the case of laminated ship-building plywood waste of melanti wood, average sound absorption coefficient was about 0.25. It was surmised that the laminated ship-building plywood waste can be used as interior materials because of its good mechanical and sound absorption properties.

Clinical Study of Oriental Medical Treatment 1 Case of Patient with Oral Dyskinesia (토농설(吐弄舌) 환자(患者) 1례(例)에 대한 임상적(臨床的) 고찰(考察))

  • Hwang, Kyu-Jeong;Yang, Gi-Young;Jang, Suk-Gun;Kim, Young-Hwa;Hong, Kwon-Eui;Lee, Hyun;Lee, Byung-Ryul
    • Journal of Acupuncture Research
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    • 제19권1호
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    • pp.262-269
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    • 2002
  • By process of trearment for case diagnosed as Oral Dyskinesia and admitted from the 3lth, July, 2001 to the 1st, September, 2001, the results are as follows. Method and Results : This patient was diagnosed as Oral Dyskinesia of Shaoyang disease with interior syndrome that was based by disorder of hepatic qi, medicated shihogayonggolmoreutang(shihujiayonggumolie-tang), gamisoyo-san(jiaweishaoyao-san) and acupun - cturetherapy was taken on proximal and disital acupoints including Yingu(B10, 陰谷), Zulingyi(G41, 足臨泣), Jianshi(P5, 間使), Shenmen(H6, 神門), Sanyinjiao(Sp6, 三陰交), Yi - ntang(Extra point, 印堂), Lianquan(CV23, 康泉), Qihai(CV6, 氣海) and Danhange(Damhangyuk, 膽寒格), Ganjeongge(ganjeonggyuk, 肝正格), Pizhengge(Bijeonggyuk, 脾正格) of Shayen - zhenfa(Shayamchimbeop, 舍岩鍼法). Conclusion : I consider that psychosomatic tremer disease including Oral Dyskinesia can improved by Oriental medical treatment and continuous research must be accumulated subsequently.

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Design of Seat Belt Pretensioner driven by Elastic Force (탄성력 기반 안전벨트 프리텐셔너 설계)

  • Yongsu Lee;Seyun Park;Hyuneun Lee;Sang-Hyun Kim
    • The Journal of the Convergence on Culture Technology
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    • 제9권1호
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    • pp.545-550
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    • 2023
  • A pretensioner is a safety device that protects occupants by pulling the seat belt in the event of a vehicle collision. However, since the pretensioner is driven by a explosive method, it is necessary to replace not only the gas generator but also all connecting parts including the manifold after an accident. Therefore, in this paper, we propose an elastic force-based pretensioner that can be used safely and semi-permanently. After analyzing the operating mechanism of the existing pretensioner from a thermodynamic/dynamic point of view, the spring stiffness that can be deployed within an appropriate operating time was determined by converting the gas explosion energy into elastic energy. In addition, the coil spring shape that satisfies the elastic stiffness was designed in consideration of the vehicle interior installation standard. Finally, the operating performance of the pretensioner driven by elastic force was verified through fabrication.