• Title/Summary/Keyword: Laws

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Scaling laws for vibration response of anti-symmetrically laminated plates

  • Singhatanadgid, Pairod;Ungbhakorn, Variddhi
    • Structural Engineering and Mechanics
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    • v.14 no.3
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    • pp.345-364
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    • 2002
  • The scaling laws for vibration response of anti-symmetrically laminated plates are derived by applying the similitude transformation to the governing differential equations directly. With this approach, a closed-form solution of the governing equations is not required. This is a significant advantage over the method employed by other researchers where similitude transformation is applied to the closed-form solution. The scaling laws are tested by comparing the similitude fundamental frequencies to the theoretical fundamental frequencies determined from the available closed-form solutions. In case of complete similitude, similitude solutions from the scaling laws exactly agree with the theoretical solutions. Sometimes, it may not be feasible to select the model which obeys the similarity requirement completely, therefore partial similitude is theoretically investigated and approximate scaling laws are recommended. The distorted models in stacking sequences and laminated material properties demonstrate reasonable accuracy. On the contrary, a model with distortion in fiber angle is not recommended. The derived scaling laws are very useful to determine the vibration response of complex prototypes by performing the experiment on a model with required similarities.

A Study on the Laws and Policies Relating to Work-Family Balance (일-가정 균형과 관련된 법과 정책의 비교고찰)

  • Jeong, Young-Keum
    • Journal of Family Resource Management and Policy Review
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    • v.13 no.2
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    • pp.85-105
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    • 2009
  • The purpose of this study is to compare the laws and policies relating to work-family balance with foreign cases, and to analyse the problems in implementing those laws and policies. For these purpose, this study compares family leave policies, working hams policies, public care policies in other countries. And these laws in Korea are shown. This study also analyse the policies for work-family balance in labor policy, family policy, gender policy and saeromaji plan. The results are as follows; policies for work-family balance are limited to child care and family leave. Laws for family leave are various and proper. But implementing rate of policy goal is low and a few people can benefit by those laws and policies. So, wide-range policies for work-family balance which all the families can benefit are needed.

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Investigation of the Sensitivity Depletion Laws for Rhodium Self-Powered Neutrorn Detectors (SPNDs)

  • Kim, Gil-Gon;Cho, Nam-Zin
    • Nuclear Engineering and Technology
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    • v.33 no.2
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    • pp.121-131
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    • 2001
  • An investigation of the sensitivity depletion laws for rhodium SPNDs was performed to reduce the uncertainty of the sensitivity depletion laws used in Combustion Engineering (CE) reactors and to develop calculational tools that provide the sensitivity depletion laws to interpret the signal of the newly designed rhodium SPND into the local neutron flux. The calculational tools developed in this work are computer programs for a time-dependent neutron flux distribution in the rhodium emitter during depletion and for a time-dependent beta escape probability that a beta particle generated in the emitter escapes into the collector. These programs provide the sensitivity depletion laws and show the reduction of the uncertainty by about 1 % compared to that of the method employed by CE in interpreting the signal into the local neutron flux. A reduction in the uncertainty by 1 % in interpreting the signal into the local neutron flux reduces the uncertainty tv about 1 % in interpreting the signal into the local power and lengthens the lifetime of the rhodium SPND by about 10% or more.

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A Study on the Development of Geometry as the Natural Laws and the Concepts of Space - Focus on the Whitehead's theories of natural laws - (자연법칙으로서 기하학과 공간 개념의 전개에 관한 연구 - 화이트헤드의 자연법칙 학설을 중심으로 -)

  • Hwang, Tae-Joo
    • Korean Institute of Interior Design Journal
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    • v.19 no.2
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    • pp.90-98
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    • 2010
  • The concepts of laws like regularity or persistence or recurrence those are discovered in nature, became the essential elements in speculative philosophy, study and scientific technology. Western civilization was spread out by these natural laws. As this background, this study is aimed to research the theories of natural laws and the development of geometry as the descriptive tools and the development aspects of the concepts of space. According to Whitehead's four theories on the natural laws, the result of this study that aimed like that as follows. First, the theories on the immanence and imposition of the natural laws were the predominant ideas from ancient Greek to before the scientific revolution, the theory on the simple description like the positivism made the Newton-Cartesian mechanism and an absolutist world view. The theory on the conventional interpretation made the organicism and relativism world view according to non-Euclidean geometry. Second, the geometrical composition of ancient Greek architecture was an aesthetics that represented the immanence of natural laws. Third, in the basic symbol of medieval times, the numeral symbol was the frame of thought and was an important principal of architecture. Fourth, during the Renaissance, architecture was regarded as mathematics that made the order of universe to visible things and the geometry was regarded as an important architectural principal. Fifth, according to the non-Euclidean geometry, it was possible to present the natural phenomena and the universe. Sixth, topology made to lapse the division of traditional floor, wall and ceiling in contemporary architecture and made to build the continuous space. Seventy, the new nature was explained by fractal concepts not by Euclidean shapes, fractal presented that the essence of nature had not mechanical and linear characteristic but organic and non-linear characteristic.

Institutional Improvement of Construction-Related Laws for Practical Application of 3D Printing (3D 프린팅 실무 적용을 위한 건설 관련법 제도적 개선 방향)

  • Lee, Sung-Min;Park, Sang-Hoon
    • Journal of Korean Association for Spatial Structures
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    • v.19 no.4
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    • pp.85-94
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    • 2019
  • Then 3D printing is used practically at construction sites, there is a serious lack of studies on the conflict with construction-related laws and expected operational problems. Accordingly, the purpose of this study is to present obstacles and directions for improvement in construction-related laws (Building Act, Construction Technology Promotion Act, Housing Act, Construction Machinery Management Act, etc.) for practical operation of 3D printing. The important results are as follows. Amending existing construction-related laws for 3D printing is irrational and inefficient in terms of structure and material. This study proposed a method of satisfying performance required by laws or standards based on the performance design method presented in existing laws and systems through structure and material performance certification procedure. In addition, inclusion of 3D printing equipment in the Construction Machinery Management Act results in various restrictions such as equipment inspection and certification of machine parts. As such restrictions can block vitalization of 3D printing, a long-term and step-wise approach was suggested.

A Research on Applying Copyright Laws and Response Strategies for Academic Libraries (저작권법의 적용과 대학도서관의 대응 전략에 관한 고찰)

  • Kwack, Dong-Chul
    • Journal of the Korean Society for Library and Information Science
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    • v.47 no.4
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    • pp.235-254
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    • 2013
  • The purpose of this study is to seek sustainable development plans in which academic libraries comply with copyright laws without withdrawing their information services by focusing on the changes of the relevant regulations since 2000 when copyright laws were revised. The study deals with the followings in detail. First, the issues with library information services is examined, owing to the enactment, revision, and execution of copyright laws. Second, the histories of enacting and amending copyright laws related to libraries are considered. Third, various opinions and response measures as to applying the copyright laws to libraries are analyzed. Forth, based on the previous analysis, the study suggests response strategies that academic libraries accept for copyright laws and keep improving library information services.

Comparing the Housing Laws related to the disabled in various countries for Aging Society (고령화 사회를 위한 국내·외 장애인 주택관련법 비교연구)

  • Kim, Sang-Woon
    • Journal of The Korea Institute of Healthcare Architecture
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    • v.18 no.2
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    • pp.7-17
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    • 2012
  • The purpose of this study is to be suggested the primary data when housing research related the disabled and the enactment are needed. For the purpose, this study compares the Housing Laws, such as state of legislation, composition and detailed standards in domestic and international. The scope of study is limited each space in 7 types, entrance, corridor, living room, bedroom, bathroom, kitchen, and balcony, then, laws related on each space are compared and analyzed. In addition, comparison of the foreign's Housing laws are focused on Switzerland, Germany, United States of America, and Japan where have systematic and organized Housing laws by in each space. This study were processed as follows: First, domestic and foreign laws are examined throughout state of legislation, composition, detailed standards, and types of the disabled. Then, housing laws that applied institutionally in each country are compared. Finally, similarities and differences of specific standards are analyzed by comparison on space in each country.

A Study on the Appraisal of Appropriate Planning in Public-Toilet of Amusement Park in Kangwon-Do (강원지역 주요 유원지 공중화장실의 적정설계 평가에 관한 연구)

  • Kim Eun-Joong
    • Korean Institute of Interior Design Journal
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    • v.14 no.4 s.51
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    • pp.62-69
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    • 2005
  • This study shows the present conditions and the appraisal of Public-Toilet in ammusement park of Kangwon-Do. The areas of Public-Toilets are various from over $30m^2\;to\;230m^2$ and the construction costs are also various. The exterior designs aim at Provincial characteristics, traditional images, or modem minimal styles. The floor plans are usually symmetric forms by rectangular or circular spaces. There are some laws and manuals from related association to regulate Public-Toilet. By appraising with these laws and manuals we can notice that there are many problems to improve in Public-Toilet. As the survey, we can find that the unpreparedness of the cognition equipment about whether someone uses the public-toilet has most frequency in related laws. And by the laws about multipurpose toilet, the insufficiency of the accessing space to the chamber pot has most frequency. By the manual of related association, there are much more indications - for example, the unpreparedness of wind protection room or etiquette bell, so on - than by related laws. For the improvement of the culture In Public-Toilet, we should not only improve the related laws, but also activate the deliberation about the appropriate planning in Public-Toilet.

Clustering Keywords to Define Cybersecurity: An Analysis of Malaysian and ASEAN Countries' Cyber Laws

  • Joharry, Siti Aeisha;Turiman, Syamimi;Nor, Nor Fariza Mohd
    • Asia Pacific Journal of Corpus Research
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    • v.3 no.2
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    • pp.17-33
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    • 2022
  • While the term is nothing new, 'cybersecurity' still seems to be defined quite loosely and subjectively depending on context. This is problematic especially to legal writers for prosecuting cybercrimes that do not fit a particular clause/act. In fact, what is more difficult is the non-existent single 'cybersecurity law' in Malaysia, rather than the current implementation of 10-related cyber security acts. In this paper, the 10 acts are compiled into a corpus to analyse the language used in these acts via a corpus linguistics approach. A list of frequent words is firstly investigated to see whether the so-called related laws do talk about cybersecurity followed by close inspection of the concordance lines and habitually associated phrases (clusters) to explore use of these words in context. The 'compare 2 wordlist' feature is used to identify similarities or differences between the 10 Malaysian cybersecurity related laws against a corpus of cyber laws from other ASEAN countries. Findings revealed that ASEAN cyber laws refer mostly to three cybersecurity dominant themes identified in the literature: technological solutions, events, and strategies, processes, and methods, whereas Malaysian cybersecurity-related laws revolved around themes like human engagement, and referent objects (of security). Although these so-called cyber related policies and laws in Malaysia are highlighted in the National Cyber Security Agency (NACSA), their practical applications to combat cybercrimes remain uncertain.

STRONG LAWS FOR WEIGHTED SUMS OF I.I.D. RANDOM VARIABLES

  • Cai, Guang-Hui
    • Communications of the Korean Mathematical Society
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    • v.21 no.4
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    • pp.771-778
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    • 2006
  • Strong laws are established for linear statistics that are weighted sums of a random sample. We show extensions of the Marcinkiewicz-Zygmund strong laws under certain moment conditions on both the weights and the distribution. The result obtained extends and sharpens the result of Sung ([12]).