• 정보교육학회논문지
• /
• 제18권4호
• /
• pp.633-644
• /
• 2014

본 논문에서는 공공데이터의 활용과 SNS의 소통 기능을 중점적으로 활용하여 PC와 모바일 웹에서 사용할 수 있도록 교육 프로그램을 구현하였다. 프로그램의 특징은 친구와 문제를 주고받으며 짧은 글을 함께 전송하여 풀어보는 방식이다. 각각 방명록으로 소통의 공간을 마련하였고, 공지사항, 질문게시판, 자유게시판, 자료실을 두어 소통의 기능을 확대하고, 친구 찾기 및 추천 공간을 마련해 아는 사람 외에 프로그램을 이용하는 다른 사용자와 함께 학습할 수 있도록 설계하였다. 구현된 프로그램으로 초등학생과 고등학생에게 학습과 교우관계에 미치는 영향에 대해 설문을 통해 조사하고 반응을 분석하였다. 이러한 조사를 바탕으로 교육프로그램의 활용방안을 제시하였다.

• 한국항공운항학회지
• /
• 제22권1호
• /
• pp.51-64
• /
• 2014

According to the prediction of Aviation Industry Corporation of China, in the next 20 years, China will have an increase of 4,583 civilian airliners, including 3,682 jumbo jets and 901 regional aircrafts. Chinese commercial aviation aircraft market will undoubtedly grow rapidly. until the year 2030, China's share of the global aircraft fleet will increase from 9% to 15%. In addition, the business jet market has a huge growing room in the global industry, the deliveries will reach 10,000 units in the next 10 years, and the Chinese market deliveries will reach 23,600 in the next 20 years. China's aviation market, is and will be enormous in the future. It is one of the main engines of economic growth in the field. China's civil aviation transportation is based on dazzling economic development. Air transport is the fastest growing power for the time being. China's aviation sector will have an average annual gross of about 10%, and more likely to continued growing and it is expected to be world's major aviation market around the world. As the result, since one of future the important industries will be emerged, Air policy enforcement and considering the reality of our future prospects for the airline industry presented.

• 한국가구학회지
• /
• 제27권4호
• /
• pp.399-411
• /
• 2016

Korea Furniture design development process is repeated a number of changes by the change of residence and type of market demand derived from the process of industrialization. The modernization process of industrialization advances by large-scale population moves to the city to urbanization proceeds rapidly. Housing problems are concentrated in cities and sparked the furniture industry, furniture design by changes in marketing concepts that appear in the industrialization phase, growth must necessarily accommodate the needs of consumers. Including kitchen furniture, living room furniture and master bedroom furniture has been sensitively adapted changes in the structure of these houses, particularly structural changes Apartments. Starting in the 1990s, jumping over furniture industry has adapted quickly to the market demand, changes in marketing concepts. Furniture industry is growing market share in most of the country, but the entire industry had to undergo a competitive marketing overheating due to excessive supply in excess of market demand since the mid-1990s. Changes in furniture design in this process was the change in furniture design more than the change of the residential structure. The study industrial development and marketing concepts are changing to construct a model to track the changes varied styles and time changes affect whether the main furniture design.

• 한국복합재료학회:학술대회논문집
• /
• 한국복합재료학회 2003년도 춘계학술발표대회 논문집
• /
• pp.139-142
• /
• 2003

As composite materials are gaining wide acceptance in aircraft structure, repair of damaged composite is becoming an important issue. The issues in composite repair include high cost, material interchangeability, water ingression, and structural integrity. To address these problems, researchers have studied on the composite repair in various aspects. In this paper, an Internet-based advisory service (called Repair Advisory Service, RAS) for composite repair is proposed to increase efficiency for repair process. In the RAS system the web browser is used as its user interface, which provides easy access to the service. The RAS server provides web-based tools for failure prediction, Structural Repair Manual (SRM), automated prepreg cutting process, material properties, inventory and knowledge base. The computer codes implemented for repair design estimate the tensile failure and shear failure of repaired structures. The prediction of failure is based on the maximum strain criterion for tensile failure while elastic-perfect plastic shear failure model is applied for interfacial failure. The OEM's SRM is provided in the PDF format for viewing and searching by web browsers instead of looking up paper version SRM. The knowledge base in this site offers a room to share and distribute ideas, memos, publications, or suggestions from the repair engineers. The fabrication tool of RAS reads repair geometry from engineers then generates a CNC toolpath to cut prepreg patches. The RAS service is open to public and available at http://nano.gsnu.ac.kr/. Broad feedback from field technicians and engineers is welcome to improve the usefulness of RAS.

• 한국정보통신학회:학술대회논문집
• /
• 한국해양정보통신학회 2007년도 추계종합학술대회
• /
• pp.457-461
• /
• 2007

In many applications, received signal strength indicator is used for location tracking and sensor nodes localization. For location finding, the distances between sensor nodes can be estimated by converting received signal's power into distance using path loss prediction model. Many researches have done the analysis of power-distance relationship for radio channel characterization. In indoor environment, the general conclusion is the non-linear variation of RSSI values as distance varied linearly. This has been one of the difficulties for indoor localization. This paper presents works on indoor RSSI characterization based on statistical methods to find the overall trend of RSSI variation at different places and times within the same room From experiments, it has been shown that the variation of RSSI values can be determined by both spatial and temporal factors. This two factors are directly indicated by the two main parameters of path loss prediction model. The results show that all sensor nodes which are located at different places share the same characterization value for the temporal parameter whereas different values for the spatial parameters. Using this relationship, the characterization for location estimation can be more efficient and accurate.

• Journal of Microbiology and Biotechnology
• /
• 제30권5호
• /
• pp.681-688
• /
• 2020

Bacterial cell-based biosensors, or whole-cell bioreporters (WCBs), are an alternative tool for the quantification of hazardous materials. Most WCBs share similar working mechanisms. In brief, the recognition of a target by sensing domains induces a biological event, such as changes in protein conformation or gene expression, providing a basis for quantification. WCBs targeting heavy metal(loid)s employ metalloregulators as sensing domains and control the expression of genes in the presence of target metal(loid) ions, but the diversity of targets, specificity, and sensitivity of these WCBs are limited. In this study, we genetically engineered the metal-binding loop (MBL) of ZntR, which controls the znt-operon in Escherichia coli. In the MBL of ZntR, three Cys sites interact with metal ions. Based on the crystal structure of ZntR, MBL sequences were modified by site-directed mutagenesis. As a result, the metal-sensing properties of WCBs differed depending on amino acid sequences and the new selectivity to Cr or Pb was observed. Although there is room for improvement, our results support the use of currently available WCBs as a platform to generate new WCBs to target other environmental pollutants including metal(loid)s.

• 한국주거학회논문집
• /
• 제14권6호
• /
• pp.125-133
• /
• 2003

The purpose of this study is to reveal the characteristics of Kan as a compositional unit in relation with its usage, building base, structural system, and roofing system in Seo Baek Dang and Gwan Ga Jeong. The results are as follows： Seo Baek Dang and Gwan Ga Jeong share a common characteristics： Kan module forms the plan to be 1：1 in shape and enables flexibility in usage and regularity in compositional aspect. In Seo Baek Dang, there are active level differences in base, room floor levels and column heights to achieve intended roof design while minimizing the deviation of module (500 mm) of four sides enclosing the an-madang (inner courtyard) and, in Gwan Ga Jeong, instead of differentiating levels, maximizing the module control (up to 1,560 mm) and lowering the roof slope are found. They are regarded resulting in a rather plane manner. Through a comparative analysis, it is found out that these two houses have a common characteristics of Kan to form a quadrate plan while they have differences both in conceptual and tectonic manner that is 'how to build a house' in similar conditions of region, period and society. In addition, Kan as a module is clarified to have a relative value that regulates both structural and aesthetical aspects.

• 한국실내디자인학회논문집
• /
• 제16권3호
• /
• pp.119-129
• /
• 2007

This study illustrates a prototype proposal and its evaluation for the development of floor plans in the condominium housing remodeling. For this I evaluated the survey of the residents of the 'K' town in Joonge-dong, Nowon-gu, Seoul, against the proposal which was developed based on the resident's pre-survey. The result includes that the residents' preference for community actions such as the removal of fences which are reviewed as negative, whereas the introduction of a fitness center and community facilities in the library are reviewed as positive. The residents preferred the open space by the piloti structure, although which is the wall column structure, where they anticipated a rest area, sports facilities, and bicycle drop-off spots. The sidewall proposal in the main building and the full use of the roof floor were underestimated in terms of design concept. The research also illustrated the residents' desired space planning options, those tending to use of space 'B type', personalization 'C type' and spatial size 'A type'. Residents responded positively to the introduction of the 'Alpha' space in which two households share one space that could be used for multiple purposes such as a rest area, an environment-friendly garden, and hobby room, etc, and also there is another possibility it plays an important role to the sociality in community.

• 대한가정학회지
• /
• 제40권4호
• /
• pp.1-12
• /
• 2002

This study aimed to examine the needs for the planning of group homes for the elderly with dementia in lower income class, who have more economic burden on the caring the demented aged. The survey was conducted by questionnaires collected from 300 respondents from December 2000 to March 2001. Methods of analysis were frequency distribution, mean and chi-square test. The results of this study were as follows: 1) The respondents perceived that the responsibility to take care of the elderly with dementia belonged to their family, not to society or the government, and the sons and daughters had to share the burden placed on care-givers. 2) The awareness of group homes for dementia was relatively low. 3) The respondents' needs for the group homes with dementia could be summarized as follows; small scale plan with homelike atmosphere, a total of 6-8 residents, structural type of detached house or three-storied town house, 2-3 persons per individual room, and management system by non-profit organization or the government. There were no big differences between the respondents of this study and upper and middle class studies conducted by other research, except for some details. Referring to results of this study, it is asserted that group homes for the elderly with dementia would be embraced throughout the country if poetical assistance combined with economic support were provided.

• 대한안전경영과학회지
• /
• 제16권2호
• /
• pp.1-9
• /
• 2014

This study tried to propose plan to prevent human error of railroad driver among human error of railroad worker which takes great share in railroad accident. For this, in order to maintain correlation between the accident actually occurred after the opening of high-speed railroad and experience of accident that did not happened, survey on respondent was analyzed by conducting survey on KTX captain who is working in driving work of high-speed railroad, and instruction management team manager who manages KTX captain and captain. This thesis classified the factors by human factor, job factor, environment factor, organization factor, and established human error management model by comparing and analyzing how each factors have spatial interrelations with a railroad accident. The purpose of this study is to contribute to make safe railroad, and reliable railroad by preventing human error accident by minimizing human error of high-speed railroad drivers, and improving driving workers to cope accurately and fast with irregularities through various institutional improvement, improvement of driving facilities, improvement of operating room environment, and improvement of education system.