• Title/Summary/Keyword: barrier-free

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A Study of Current Tendency of Universal Design (유니버설 디자인의 최근 성향 분석 연구)

  • 황주희
    • Proceedings of the Korean Institute of Interior Design Conference
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    • 1999.04a
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    • pp.23-26
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    • 1999
  • The purpose of this study was to scrutinize the current tendency of Universal Design. The analysis unit was presentation in the proceeding of "The first International Universal Design Conference" which was held at New York in June, 1998. Sixty the presentations in the conference were analyzed using Content Analysis technique. The analysis criteria were academic vs. practical, themes, subjects, levels of UD concepts, design principles applied, and type of disability. The results were as follows. Compared with its early characteristics such as practical approach, architectural living environment, barrier free for the disabled, especially for person with mobile disability using wheelchair, and the emphasis of accessibility, UD characteristics shown in the conference evidenced a dramatic shift from them toward the new century : Its subjects became a wide range of people including the disabled departing from 'the disabled' only; The range of disability was expanded to include visual and audial disability departing from mobility only; Themes appeared very diverse such as both small and large scale environments, products, dissemination, and theory from the 'architectural environment'; Various design principles were added to early accessibility ; Commercialism was added to early Welfarism. Therefore, this conference provided empirical evidence that UD changed considerably from its early development in many aspects. It indicated the potential of UD as a big wave in the 21st century design.

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Effect of milling on the electrical properties of Ba(Fe1/2Ta1/2)O3 ceramic

  • Mahto, Uttam K.;Roy, Sumit K.;Chaudhuri, S.;Prasad, K.
    • Advances in materials Research
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    • v.5 no.3
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    • pp.181-192
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    • 2016
  • In this work effect of high energy milling on the structural and electrical properties of $Ba(Fe_{1/2}Ta_{1/2})O_3$ (BFT) ceramic synthesized using standard solid-state reaction method were investigated. X-ray diffraction studies indicated that the unit cell structure for all the samples to be hexagonal (space group: P3m1). FTIR spectra also confirmed the formation of BFT without any new phase. The milled (10 h) BFT ceramic showed the formation of small grain sizes (<$2{\mu}m$) which is beneficial for dielectric applications in high density integrated devices. Besides, the milled (10 h) BFT ceramic sample exhibited superior dielectric properties (enhancement in ${\varepsilon}^{\prime}-value$ and reduction in $tg{\delta}-value$) compared to un-milled one. Impedance analysis indicated the negative temperature coefficient of resistance (NTCR) character. The correlated barrier hopping model (jump relaxation type) is found to successfully explain the mechanism of charge transport in present ceramic samples.

Green and Healthy Living in a High-rise, High Density Urban Environment: The Hong Kong Housing Authority's Experience

  • Fung, Ada Y.S.
    • Land and Housing Review
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    • v.5 no.3
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    • pp.131-136
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    • 2014
  • The Hong Kong Housing Authority (HKHA) develops and implements a public housing programme to meet the housing needs of people who cannot afford private rental housing. The HKHA has an existing stock of about 740,000 public rental flats (PRH). According to the 2014 Policy Address, the Government aims to provide an average of about 20,000 PRH units and about 8,000 Home Ownership Scheme (HOS) units per year. We care for the environment. In developing new housing estates, we conduct thorough environmental studies such as microclimate studies and air ventilation assessment, and use passive design to harness the natural characteristics of our sites. We employ environment-friendly design and construction methods, using modular flat design, pre-cast and pre-fabricated construction techniques as well as recycled, green construction materials. We conduct Carbon Emission Estimation for all our projects, conserve the use of natural resources and reduce wastes throughout the life cycle of buildings. We care for people. We adopt the principles of Universal Design and Barrier Free Access for the convenience and welfare of people of all ages and abilities. We carry out Community Engagement to collect stakeholders' views and aspirations, and incorporate them in the design of our projects. We also carry out surveys of residents' views after the occupation of new estates to gauge our success and identify areas for improvement.

A Landscape Design of Sangsaengjiwon (상생지원(相生池苑) 기본계획)

  • Park, Kyung-Bok
    • Journal of the Korean Institute of Landscape Architecture
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    • v.36 no.1
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    • pp.12-27
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    • 2008
  • The purpose of this plan was to introduce the imaginary environment concept to modem environment design which was drawn by comparison of historic and cultural landscape. An area of $19,056m^2$ in I1-ja mountain water reservoir, located in 94 Dun-Chon-Dong, Gangdong-Gu, Seoul was selected for this planning. The concepts of Barrier-Free Design and Universal Design were introduced in order to accept the demands of various social classes. Based on the results of natural and cultural environment, Animism, Heaven, Earth and Man Theory and Yin-Yang and the Five Elements Theory these concepts were introduced for the philosophical background. Concept planning, topic selection, space planning and axis establishment were conducted during the framework step of the plan. Circulation planning, planting planning, facility and pavement planning, and light planning were conducted during the initial planning step. Lastly, detailed designing was performed for the major spaces. In addition, the imaginary environment concept was applied, ranging from the structural aspect of the space to designing factors of the facility in order to achieve placeness and practicality. In conclusion, this may be the first case design applying the imaginary environment concept to the environmental design with natural environment factors such as animals, plants, terrains and climate, and cultural such as cities, places, time, thoughts and symbols which are all factors to be considered in the existing environment design.

Effects of Impact Velocity on Crystallization and Activation Energy of Cu-based Bulk Metallic Glasses in Kinetic Spray Coating (저온 분사 코팅 공정에서 충돌속도에 따른 CuNiTiZr 벌크 비정질 소재의 활성화 에너지와 결정화 거동 분석)

  • Yoon, Sang-Hoon;Bae, Gyu-Yeol;Kim, Jung-Hwan;Lee, Chang-Hee
    • Journal of the Korean institute of surface engineering
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    • v.41 no.6
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    • pp.301-307
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    • 2008
  • In this paper, nanocrystallization of CuNiTiZr bulk metallic glass (BMG) subjecting to a kinetic spraying, dependent on impact velocity, was investigated by numerical and experimental approaches. The crystallization fraction and nucleation activation energy of initial feedstock and as-deposited coating were estimated by DSC and Kissinger method, respectively. The results of numerical modeling and experiment showed that the crystalline fraction and nucleation activation energy in BMG coatings were depended on kinetic energy of incident particle. Upon impact, the conversion of particle kinetic energy leads to not only decreasing free energy barrier but also increasing the driving force for an amorphous to crystalline phase transformation. The nanocrystallization of BMGs is associated with the strain energy delivered by a plastic deformation with a high strain rate.

Hexavalent Chromium Reduction by Bacteria from Tannery Effluent

  • Batool, Rida;Yrjala, Kim;Hasnain, Shahida
    • Journal of Microbiology and Biotechnology
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    • v.22 no.4
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    • pp.547-554
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    • 2012
  • Chromium is generated from several industrial processes. It occurs in different oxidation states, but Cr(III) and Cr(VI) are the most common ones. Cr(VI) is a toxic, soluble environmental contaminant. Some bacteria are able to reduce hexavalent chromium to the insoluble and less toxic Cr(III), and thus chromate bioremediation is of considerable interest. An indigenous chromium-reducing bacterial strain, Rb-2, isolated from a tannery water sample, was identified as Ochrobactrum intermedium, on the basis of 16S rRNA gene sequencing. The influence of factors like temperature of incubation, initial concentration of Cr, mobility of bacteria, and different carbon sources were studied to test the ability of the bacterium to reduce Cr(VI) under variable environmental conditions. The ability of the bacterial strain to reduce hexavalent chromium in artificial and industrial sewage water was evaluated. It was observed that the mechanism of resistance to metal was not due to the change in the permeability barrier of the cell membrane, and the enzyme activity was found to be inductive. Intracellular reduction of Cr(VI) was proven by reductase assay using cell-free extract. Scanning electron microscopy revealed chromium precipitates on bacterial cell surfaces, and transmission electron microscopy showed the outer as well as inner distribution of Cr(VI). This bacterial strain can be useful for Cr(VI) detoxification under a wide range of environmental conditions.

Effect of Neutral Salts on the Reactive Dyeing of Silk (II) - Effect of Anions - (중성염이 견의 반응염색에 미치는 영향 (II) - 음이온의 영향 -)

  • 도성국;박찬헌;권지윤
    • Textile Coloration and Finishing
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    • v.13 no.2
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    • pp.114-119
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    • 2001
  • Four kinds of neutral sodium salts with different anions, NaF, NaCl, NaBr, and NaI, were added to the dye bath to accurately understand the effect of anions on the reactive dyeing of silk with C. I. Reactive Black 5. The sodium cation towered the negative surface potential of the silk and increased the dye-uptake on fille fabric as reported previously. However, because of the discrepancy in the anions'inhibition power from cation's lowering: the surface negative potential the amount of the dye on the silk fiber was different from each other in the order of $F^->Cl^-> Br^-I^-$. The activation energy(E$_{a}$) lot the dyeing was in the order of $F^->Cl^-> Br^-I^-$ but the dye-uptake on the fabric and the activation free energy$(\Delta{G}^*)$, the real energy barrier fort the reaction, were in the order of $F^->Cl^-> Br^-I^-$ because the strength of the interaction of the anions with sodium cations was the salute as the order of the latter. In other words F$^{[-1000]}$ exerted the weakest electrostatic force on $Na^+$ and competed with the dyestuff anions least of all. The decrease in $\Delta{S}^*$ may be due to the looesly bonded activated complex of dyestuff anions, sodium cations and fiber molecules at transition state. It was clarified from the Brёnsted equation that sodium salts with different anions also had fille ionic strength effect and the specific salt effect on the reactive dyeing.g.

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Customs Administration strategies under FTA's trade environment (FTA 무역환경에서의 관세행정 전략)

  • Choe, Hui-In
    • 한국디지털정책학회:학술대회논문집
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    • 2007.06a
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    • pp.33-40
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    • 2007
  • The Customs Administration, unlike other administrative service, should respond to constantly changing external environment. The Customs has to actively adapt itself to government policy changes, economic changes and international environment changes to facilitate the flow of trade logistics and maintain trading relations wi th other countries. The purpose of this paper is to explain policy directions of the Korea Customs Service which enforces various policies related to tariff and non-tariff barrier elimination for the trade liberalization while the Korean government is pursuing FTAs on a multi-track basis. This paper aims to seek ways to apply FTA policies to the Korean society and economy in a smooth manner. First of all, this paper examines changes in Customs administration brought by the proliferation of FTAs to such areas as FTA negotiations, import/export management, duties and taxes collection, drawback reduction/exempt ion of duty application area of preferential tariff rate and country of origin management. Then, the paper sets FTA missions of "supporting Customs Administration to lead the new trend of free trade environment" after analyzing the environment changes. To achieve the FTA mission mentioned above, the KCS designated 4 strategies and 40 implementation tasks. The 4 strategies are named "4C Strategies" taking initial letters from Client-oriented, Customized procedures, Cooperation and Constitution. "4C" also refers to Foresee(strategies to foresee the successful establishment of FTA policies) or For C(Customer or Customs). The KCS will continue to create new tasks through various channels and monitor their implementation process, and to help FTA regime successfully take root in Korea.

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Validation Studies on Plans of Refurbished Disabled Homes with VAE Analysis and Interview Investigation (장애인 거주시설 평면변경 안에 대한 유효성 검증에 관한 연구 - 심층인터뷰와 VAE기법을 통한 분석 -)

  • Shon, Donghwa;Kim, Kyongwon;Choi, Jaepil
    • Journal of the Korean housing association
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    • v.28 no.2
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    • pp.13-21
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    • 2017
  • A well designed disabled home needs to consider various design principles and variables. It should consider not only physical accessibility but also psychological aspects. Previous research studies have shown that barrier-free/universal designs which were primarily focused on physical access and usage of facilities and building operations. This research paper will examine, a selection of refurbished disabled homes, introduced by the Korean Disabled People's Development Institutes in 2013. The plan samples are to be analyzed using the Visual Access and Exposure spatial analysis program coupled with supporting information extracted from consultations and feedback from experienced professional disabled home staff members. This research paper aims to propose the usage and viability of VAE Analysis in the design and planning of disabled home layouts. The purpose of this study is to specify the differences in visual spatial relationships between the plans before and after refurbishment in accordance to staff and user requirements. This will ensure a bettered environment for the users and ensuring an optimized of spatial programming and building operation and usage.

Diagnostic Paper Chip for Reliable Quantitative Detection of Albumin using Retention Factor (체류 인자를 이용한, 알부민의 정량 분석용 종이 칩)

  • Jeong, Seong-Geun;Lee, Sang-Ho;Lee, Chang-Soo
    • KSBB Journal
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    • v.28 no.4
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    • pp.254-259
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    • 2013
  • Herein we present a diagnostic paper chip that can quantitatively detect albumin without external electronic reader and dispensing apparatus. We fabricated a diagnostic paper chip device by printing wax barrier on the paper and wicking it with citrate buffer and tetrabromophenol blue to detect albumin in sample solution. The paper chip is so simple that we dropped a sample solution at sample pad and measure the ratio of two travel distances of the sample solvent and albumin under the name of retention factor. Our result confirmed that the retention factor was constant in the samples with same concentration of albumin and useful determinant for the measurement of albumin concentration. The paper chip is affordable and equipment-free, and close to ideal point-of-care test in accordance with the assured criteria, outlined by the World Health Organization. We assume that this diagnostic paper chip will expand the concept of colorimetric determination and provide a inexpensive diagnostic method to aging society and developing country.