• Proceedings of the Korean Institute of Industrial Safety Conference
• /
• 2001.11a
• /
• pp.175-178
• /
• 2001

탄소는 활성탄으로 제조되어 다른 재료와 접촉시에 수분을 많이 흡수하여 콘크리트와 배합시 과정이 활성적으로 진행되는 점을 이용하여 조직이 좀더 밀도 있게 콘크리트 자체의 일부 단점을 보완하여 강도개선 특히 인장강도 개선을 밝히고자 하는데 본 연구의 목적이 있다. 시행착오 방법을 사용하여 콘크리트에 배합을 해나가는 과정으로 배합비를 처음 소량에서부터 점점 증가시켜나가는 방법을 택하였다. 배합에서 비 숙련에 의한 오차를 줄이기 위해서 K 건설레미콘에서 20년 경력자에 의해서 배합관리 되었고 $17^{\circ}$ $\pm$$3^{\circ}C$ 자동온도 조절기에 의해서 양생되었다.(중략)

• Proceedings of KOSOMES biannual meeting
• /
• 2017.11a
• /
• pp.66-66
• /
• 2017

• Journal of the Korean Society of Radiology
• /
• v.18 no.2
• /
• pp.153-159
• /
• 2024

In X-ray projection, Unskilled radiologists become skilled through fail exam. This causes the patient to be exposed to unnecessary radiation. In this study, pre-position unskilled radiologic technologist presented ways to improve clinical proficiency. presented a skull lateral x-ray projection practice method using visual, spatial, and assistive devices. In addition, the accuracy and usefulness of the use of assistive devices were evaluated. When X-ray images were taken based on learning, the rotational spacing, which indicates image distortion, was 7.85 ± 1.45 mm and the tiliting spacing was 4.84 ± 0.5 mm. When practicing using visual aids, the rotational spacing is 4.4 ± 0.76 mm and the inclination spacing is 3.01 ± 0.87 mm. using a spatial compensation device, the rotational spacing is 5.2 ± 0.69 mm and the tiliting spacing is 3.33 ± 0.61 mm. Skull lateral X-ray Image distortion caused by empirical photography practice decreased by 5.4%, but image distortion caused by tilting increased by 1.2%. When practicing using a visual assistive devices, the degree of rotational spacing by 40.1% and the tiliting spacing decreased by 30.7% compared to the empirical x-ray exposure practice. When using spatial assistive devices, the rotation interval was reduced by 41.7% and the tilting interval by 23.7% compared to conventional empirical x-ray exposure practice. Therefore, if an unskilled radiologist practices using visual and spatial aids,the accuracy will be improved in skull lateral x-ray projection.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
• /
• 2010.10a
• /
• pp.37-41
• /
• 2010

스프링클러설비와 방화구획 구성요소는 화재시 매우 중요한 역할을 한다. 그러나 기존에 15층이하 아파트는 스프링클러설비가 없어 화재시 방화구획에 의존해야 되는데 방화구획 관련 설계, 시공, 감리가 미비하여 화재에 쉽게 노출되어 있다. 설비슬리브, 전선관, 덕트등이 방화구획으로 되어 있는 부분을 관통하는 경우 그틈을 시멘트모르타르나 기타 불연재료로 메우도록 규정하고 있으나 화재발생시 관통부를 메운 재료의 내화성능 부실, 균열, 탈락 등으로 화재안전성이 떨어진다. 현장에서의 설계, 시공, 감리등 대응하는 자세가 너무 허술하다. 설계에 방화댐퍼, 관통부 틈새의 내용이 반영 되지 않고 건축, 기계, 전기, 통신, 소방등 각 분야의 허가 도면에 도장이 날인되어 나타난다. 시공자는 잘못된 설계도면을 가지고 허가 도면이라며 도면되로 시공한다. 또한 실리콘, 우레탄폼등을 방화구획 관통부 틈새에 주입하며, 작업자도 비숙련자로서 개념도 없이 방화용실란트와 우레탄폼을 혼용해가며 작업을 한다.

• Journal of the Korean Institute of Intelligent Systems
• /
• v.24 no.3
• /
• pp.323-329
• /
• 2014

In spoken language research, transcription process needs to be carried out to translate voice data into text. Transcription tool, support program of transcription, offers various information such as content and time of utterance and speaker information. For this reason, inexperienced computer users are having trouble familiarizing with the program. Moreover, since there are little transcription tools developed domestically in Korea, they are usually not suitable for Korean environment. In this paper, we propose a transcription tool which supports not only Korean transcription but easy-to-use interface environment for novice. The transcription supporting function is also provided to minimize mistake that might happen in the process of transcription. And a system structure will be provided for data reliability. Usability of the proposed tool is evaluated in accordance with transcription experience. The evaluation result shows that transcription process and transcription support function have become faster and more convenient respectively.

• Transactions of the Korean Society of Mechanical Engineers A
• /
• v.41 no.7
• /
• pp.673-682
• /
• 2017

As the culture of making things based on "do-it-yourself" (DIY) activity is increasingly promoted, the use of recent digital technologies and tools, including the 3D printer, have become widespread. However, the use of computerized numerical control (CNC) engraving machine is considered difficult because of the complicated procedures and specialized knowledge required for its operation. Therefore, this study aims to resolve the issue that limits the usability of the CNC engraving machine. This paper presents a novel CNC engraving machine system for non-experts based on human-centered design. First, the size and type of the workpiece and tool are reduced. Second, computer-aided process planning (CAPP) steps such as tool path generation, workpiece clamping, and corresponding coordinate system are automated by compromising productivity and efficiency. As a result, a CNC engraving machine system that can be easily used by non-experts was developed. This development has great significance in that it opens up the possibility of using the CNC engraving machine for a wider range of DIY activities.

• The Journal of the Institute of Internet, Broadcasting and Communication
• /
• v.16 no.2
• /
• pp.131-136
• /
• 2016

An appropriate evaluation on learner's pronunciation has been an important part of foreign language education. The learners should be evaluated and receive proper feedback for pronunciation improvement. Due to the cost and consistency problem of human evaluation, automatic pronunciation evaluation system has been studied. The most of the current automatic evaluation systems utilizes underlying Automatic Speech Recognition (ASR) technology. We suggest in this work to evaluate learner's pronunciation accuracy and fluency in word-level using the ASR and non-native teacher's speech model. Through the performance evaluation on our system, we confirm the overall evaluation result of pronunciation accuracy and fluency actually represents the learner's English skill level quite accurately.

• Journal of Labour Economics
• /
• v.24 no.2
• /
• pp.125-162
• /
• 2001

According to the survey results on non-standard employment, most of the non-standard workers are women and work at service jobs and some jobs that do not require firm-specific skill. Also wages of non-standard workers appear to be lower than those of standard workers by 10~19%. Non-standard workers are very much likely to be excluded from beneficiaries of economic growth because job contents and ability are not important relatively as criteria in determining their basic wage and their benefits are also much lower in severance pay and bonuses, vacations, 4 social insurances, education and training opportunities. Because of very low rate of union membership, the working conditions of non-standard workers are not expected to be improvable easily by unions. It seems that the reason of the demand increase for non-standard workers is mainly because not only an individual establishment demands quantitative flexibility in employment, but also there are tendencies of being smaller in establishment size and of growing service industries macro-economically. The number of non-standard workers are expected to increase continuously in the future, too.

• Proceedings of the Korea Contents Association Conference
• /
• 2004.05a
• /
• pp.377-384
• /
• 2004

The field based morphing requires the user to set most of the control lines manually which requires much time and skill to get satisfactory results. This thesis proposes a method to acquire semi-automation of image morphing through first acquiring shape information from the source image and the target image, then after the user manually designates the least amount of a pair of feature points, these are used as standards for polygon based vertex search to set the appropriate control line to the source mage and target image, and then using the ratio of control line lengths and space. Using the proposed method, the user can reduce the time setting the control line and unskilled persons can get natural image morphing results while designating the least amount control line.

• Journal of Digital Contents Society
• /
• v.5 no.4
• /
• pp.269-274
• /
• 2004

The field based morping requires the user to set most of the control lines manually which require much time and skill to get satisfactory results. This tjesis proposes a method to acquire semi-automation of image morphing through first acquiring shape information from the source image and the target image, than after the user manually designates the least amount of a pair of feature points, these are used as standards for polygon based vertex to set the appropriate control line to the source image and target image, and then using the ratio of control line lengths and space. Using the proposed method the user can reduce the time setting the control line and unskilled persons can get natural image morphing results while desingnating the least amount of control line.