• Title, Summary, Keyword: Core Quality

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A Study on the Planning for Access Area in the Multifamily Housing Based on the Analysis of European Examples(II) - A Case Study focussed on the Planning Skills - (공동주택의 코어계획기법에 대한 연구 -유럽의 사례를 중심으로(II) -코어의 계획기법에 대한 사례연구 -)

  • 전남일
    • Journal of the Korean housing association
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    • v.14 no.2
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    • pp.77-88
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    • 2003
  • The access area, so called "core" in the housing block, makes a buffer zone between public open space and private interior space, as well as offers chances of communication for the users. Planning and design of this area, however, tend to be not attended, comparing with another spaces in the multifamily housing block. This paper is aimed at investigating examplary model European cases and, thus, finding out some positive and applicable planning skills for multifamily housing in Korea. This study covers following aspects; firstly, the important social meaning of core area was analyzed in comparison of Korea and Europe, secondly, intensive studies on the spots, visiting German, Austrian and Dutch cases, made it possible to grasp the prevailling tendency toward assessment of this area in the Continent, Thirdly, useful planning elements and skills by European examples for more user friendliness, more economization and raising the quality of spatial design and sequential experience were founded out with regard to various core types. and lastly, some concrete guidelines for planning are presented for the improvement of so far monotnousely designed core area in the local multifamily housing. Consequently those European cases made it clear that the planning of core area is closely related to the total design of housing blocks. This study maybe conducive not only to the planning of this area, but also further to the increase of the quality of life in multifamily housing.y housing.

A Study on the Coolant leaks Prevention Design of Heaters for Combat Vehicles (전투차량용 온수히터 냉각수 누수방지 설계에 관한 연구)

  • Park, Dong Min;Kwak, Daehwan;Jang, Jongwan
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.10
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    • pp.379-385
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    • 2020
  • This paper presents a design for preventing coolant leaks in the core part of a heater mounted in a combat vehicle. The heater is a device that makes heated coolant flow through the heater core in the crew room. A problem with coolant leaks in the heater core area during the operation of a combat vehicle was identified. This problem is caused mainly by high pressure at the junction of the tank and tube due to the vulnerability of this area. To solve this problem, an improved core was made by improving the welding method and changing the end region of the heater core to a structure that can withstand high pressure. When pressure was applied sequentially to the existing core and improved core, a leak occurred at 7.0 kgf/㎠ in the existing core while the improved core maintained its structure up to 17.0 kgf/㎠, highlighting the improvement. Finally, performance tests and environment tests were conducted to demonstrate the suitability of the improved structure. The improved heater will be applied to combat vehicles. This paper is expected to serve as a reference for improving defense capabilities by securing reliability as well as the design and analysis of failures of similar equipment.nse capabilities through securing reliability as well as the design and analysis of failures of similar equipment.

Properties of Wool/Spandex Core-Spun Yarn Produced on Modified Woolen Spinning Frame

  • Dang, Min;Zhang, Zhilong;Wang, Shanyuan
    • Fibers and Polymers
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    • v.7 no.4
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    • pp.420-423
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    • 2006
  • Spandex has been successfully applied on modified worsted spinning system to produce spandex core spun yam. However it's difficult to produce wool/spandex core-spun yam on woolen spinning system with the same modified device because the drafting device of the two systems is quite different. A new method is introduced to apply spandex on woolen spinning system in this paper. Core-spun yam produced in this way has good appearance and quality by comparing with normal yam. A series of experiments were carried out to study the influence of spandex drafting ratio and yam twist factor on tensile' properties and elasticity of core-spun yams. The results indicate that core-spun yam with spandex drawing ratio of 2.5 and twist factor of 13.63 has highest value of tenacity and breaking elongation.

Failure Characteristics of Carbon/BMI Sandwich Composite Joint under Pull-out Loading (풀아웃 하중을 받는 카본/BMI 샌드위치 복합재 체결부 파손특성 연구)

  • Lee, Gyeong-Chan;Choi, Young-Ho;Lee, Kowan-Woo;Sim, Jae-Hoon;Jung, Young-In
    • Composites Research
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    • v.30 no.2
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    • pp.132-137
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    • 2017
  • The purpose of this paper is to investigate failure characteristics of Carbon/BMI-Nomex honeycomb sandwich on design parameters. A total of 6 types sandwich specimens were manufactured according to core height, face thickness and density, and environmental condition were applied to evaluate temperature and humidity effects of one of these specimens. The test results show that the core shear buckling loads was commonly observed in all specimens except for the joint with density of $64kg/m^3$. After core shear buckling, however, the joint carried additional loads over the buckling loads and then finally failed in the upper face and lower face at the same time. In the case of specimen having high stiffness, the maximum failure load was low due to interfacial failure of the upper face and core without initial core shear buckling. The ETW1 and ETW2 conditions, which were carried out to evaluate the environmental condition of the sandwich specimen, show an initial failure mode which was significantly different from RTD condition. Also, the ETW2 condition with increased temperature under the same humidity shows that the core shear buckling load was 18% less than ETW1 condition.

Bioequivalence Of SudoTM Ranitidine Hydrochloride Tablet to CuranTM Tablet (Ranitidine Hydrochloride 150 mg) (큐란 정(염산라니티딘 150 mg)에 대한 수도염산라니티딘정의 생물학적동등성)

  • Lee, Sun-Neo;Ko, Youn-Jung;Kang, Seung-Woo;Yoon, Seo-Hyun;Park, Moo-Sin;Lee, Ye-Ri;Lee, Kyung-Ryul;Lee, Hee-Joo
    • Journal of Pharmaceutical Investigation
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    • v.36 no.3
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    • pp.193-199
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    • 2006
  • A bioequivalence study of $Sudo^{TM}$ Ranitidine HCI tablet (Sudo Pharma. Ind. Co., Ltd.) to $Curan^{TM}$ tablet (Il Dong Pharma. Ind. Co., Ltd.) was conducted according to the guidelines of Korea Food and Drug Administration (KFDA). Twenty four healthy male Korean volunteers received each medicine at the ranitidine hydrochloride dose of 150 mg in a 2x2 crossover study. There was a one week wash-out period between the doses. Plasma concentrations of ranitidine were monitored by a high-turbulent liquid chromatography (HTLC) for over a period of 12 hours after drug administration. $AUC_t$ (the area under the plasma concentration-time curve from time zero to 12 hr) was calculated by the linear trapezoidal rule method. $C_{max}$ (maximum plasma drug concentration) and $T_{max}$ (time to reach $C_{max}$) were compiled from the plasma concentration-time data. Analysis of variance was carried out using logarithmically transformed $AUC_t$ and $C_{max}$. No significant sequence effect was found far all of the bioavailability parameters indicating that the crossover design was properly performed. The 90% confidence intervals of the $AUC_t$ ratio and the $C_{max}$ ratio for $Sudo^{TM}$ Ranitidine $HCl/Curan^{TM}$ were 0.92-1.00 and 0.90-1.03, respectively. These values were within the acceptable bioequivalence intervals of 0.80-1.25. Thus, our study demonstrated the bioequivalence of $Sudo^{TM}$ Ranitidine HCI and $Curan^{TM}$ with respect to the rate and extent of absorption.

Factors Influencing the Quality of Standardized Treatment for Patients with Post-Cardiac Arrest Syndrome

  • Lu, Jing;Liu, Lijun;Zhu, Jianliang;Guo, Xinying
    • Korean Circulation Journal
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    • v.47 no.4
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    • pp.455-461
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    • 2017
  • Background and Objectives: For the present study, we investigated the factors that influence the quality of standardized treatment for patients with post-cardiac arrest syndrome (PCAS) to improve the quality of PCAS treatment. Subjects and Methods: We collected data on patients with cardiac arrest (CA) who were admitted to the intensive care units (ICUs) of 11 hospitals-Class II Grade A or above-in Suzhou from January to October 2013. Indexes of standardized treatment were observed within 72 hrs of CA. We analyzed monitoring techniques, monitoring frequency, ICU human and material resources, and intensivists' knowledge of PCAS treatment to explore how those factors affected the management of patients with PCAS. Results: The bed/nurse ratio and the frequency with which core temperature was recorded correlated closely with the implementation of therapeutic hypothermia (TH) within 6 hrs of CA. The bed/doctor ratio and intensivists' knowledge about PCAS correlated closely with high-quality blood glucose control within 6 hrs of CA. Furthermore, the frequency with which core temperature was recorded was an independent factor influencing the quality of TH implementation, and the number times blood gas was analyzed was an independent factor influencing how well partial pressure of carbon dioxide was kept within the normal range in the 6 hrs after CA. Conclusion: The frequency of core temperature measurements and the number of times blood gas is analyzed are the most important factors influencing the quality of standardized treatment for patients with PCAS.

Relationship-type R&D Portfolio Method for Selection of Core Technology (중점기술 선정을 위한 관계분석형 R&D 포트폴리오 방법)

  • Gam, Hyemi;Seo, Min Woo;Kim, Chansoo
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.6
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    • pp.677-682
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    • 2018
  • The relationship-type research and development (R&D) portfolio is a method for selecting core technologies based on their unique purposes and characteristics when the criteria for selecting them are independent. This study presents a relationship-type R&D portfolio method as a way to derive core technologies, and describes the methodology by dividing it into three steps: 1) analyze the relationships between selection criteria and analytical indicators, 2) form a portfolio matrix that best matches each selection criteria, and 3) derive the core technologies. In this study, the relationships between four selection criteria for selecting core technologies and the analytical indicators for identifying the technology level, economics, and the technology itself, are written in a table with HoQ. Based on the relationship table, analytical indicators to be considered were derived to satisfy each selection criterion, and the derived analytical indicators and the selected technologies were constructed with two axes in the portfolio matrix. The satisfied portfolio, P0, that satisfies all four criteria, and the portfolio, P1~P4, that satisfies selection criteria based on the unique characteristics of the four criteria, were constructed, and core technologies derived. The selected core technologies can be utilized in selecting a core area against the future security environment through a process like key word analysis based on the specifications.

A Study on the Selection of Core Services for Geo-Spatial Big Data (공간 빅데이터 핵심서비스 선정에 관한 연구)

  • Lee, Myeong Ho;Park, Joon Min;Shin, Dong bin;Ahn, Jong Wook
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.33 no.5
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    • pp.385-396
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    • 2015
  • The purpose of this study are in selecting a core service and drawing an analysis functions and service sector, based on contents of geo-spatial big data. For the study, the demand survey in the methodology has to be done by reviewing of preceding geo-spatial big data service. The survey has conducted by targeting on those experts in Industry-Academy-Research cooperation. From the survey, we could draw out requirements for the analysis function and the geo-spatial big data service sector. Also, order of priorities in service of four fields(Society, Environment, Economy, Humanities) has been utilized by a QFD(Quality Function Deployment). With the data, the first two priorities and required sectors for each field were selected for the analysis functions. From the result, we could suggest the core service model(plan), and also expect developments following each sectoral core service in the future.

Application-Centric, Energy-Efficient Network Architecture ACTION, Based on Virtual Optical Slice Core and Deterministic Optical Access Network

  • Ashizawa, Kunitaka;Okamoto, Satoru;Yamanaka, Naoaki;Oki, Eiji;Fumagalli, Andrea;Veeraraghavan, Malathi
    • Journal of the Optical Society of Korea
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    • v.19 no.4
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    • pp.340-345
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    • 2015
  • The Internet traffic is forecasted to grow at a compound annual rate of 21 % from 2013 to 2018, according to surveys carried out by Cisco [1]. Network resources are significantly over-provisioned in today's networks, and it is quite common to see link utilization in the 30-40% range [2]. Additionally, the multi-media services have widely divergent bandwidth and Quality of Experience (QoE) requirements. Unfortunately, the huge transmission capacity will increase the power consumption of network equipment [3]. Applications Coordinated with Transport, Internet Protocol and Optical Networks (ACTION) [4] has been proposed to realize a multi-QoE, application-centric, and highly energy-efficient network that leverages flexible elastic optical network technologies [5-7]. This paper provides key network technologies for realizing the ACTION, which are a virtual optical slice core network and a Time Division Multiplexing (TDM)-based deterministic active optical access network.

Effect of Harvest Date on Fruit Quality and Core Breakdown of 'Wonhwang' Pears (수확시기에 따른 '원황' 배 과실의 품질과 과심갈변에 미치는 영향)

  • Choi, Jin-Ho;Yim, Sun-Hee;Kim, Sung-Jong;Lee, Han-Chan;Kwon, Yong-Hee;Park, Yong-Seo;Jung, Seok-Kyu;Choi, Hyun-Sug
    • Korean Journal of Organic Agriculture
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    • v.23 no.1
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    • pp.103-112
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    • 2015
  • This study was conducted on how the harvest time affect fruit quality, core breakdown, and taste of GA-pasted 'Wonhwang' pear (Pyrus pyrifolia Nakai) fruit in order to verify the optimum harvest time. Harvest time included 110, 115, 120, 125, 130 days after full bloom (DAFB). Delayed fruit harvest increased fruit weight and content of soluble solids but decreased firmness, titratable acidity, and starch content. Harvest at 130 DAFB severely reduced fruit firmness and increased fruit core breakdown for 21 days at room storage, while harvest at 115 DAFB showed the opposite result of the fruit firmness and breakdown. Delayed fruit harvest reduced fruit taste, regardless of GA pasting on fruit. GA-pasted fruit showed reduced taste in advance compared to those of non GA-pasted fruit, regardless of the harvest time. Harvest at 120 DAFB would be suitable to maintain fruit quality and reduce core breakdown.