• Korean Journal of Construction Engineering and Management
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• v.19 no.6
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• pp.24-33
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• 2018

Chinese construction companies take major roles gradually in the global construction market. Chinese construction companies performs well-organized project execution by the construction related professionals based on the domestic education and qualification system. The purpose of this study is to analysis the characteristics of professional qualifications for constructor and quantity surveyor in China. The result shows that qualification systems of constructor and quantity surveyor are well classified in detail and operated by government. Each qualifications require broad and defined knowledge structure together with practical experiences. The research result will open the further research of Chinese construction related qualifications in the ways of more specificity, expertise, and practicality.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.20 no.3
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• pp.9-14
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• 2020

In this paper, Qualification Model of frequency synthesizer is designed for X-band SAR system and performed electrical and environment test. Designed frequency synthesizer generate 13.65 GHz with very low phase noise performance. The integrated phase noise from 10Hz to 1MHz is -37.91 dBc. IRF performances are analyzed according to phase noise and jitter. Also, thermal and structure analysis are achieved for stable operation in space environment. Designed frequency synthesizer is consist of 2 modules of 6U size and generate L-band, C-band, Ku-band. The result of this study would enhance the design ability of RF module and help the frequency synthesizer design for SAR payload system.

• Journal of Engineering Education Research
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• v.24 no.6
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• pp.30-39
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• 2021

The present study aims to demonstrate that it is possible to objectively evaluate the competency (referred to as graduate attributes or program outcomes) of graduates of engineering education programs. To strengthen the link between engineering education accreditation and the qualification/certification system of engineering professionals, referred to as K-Engineering Professional (K-EP), individually assuring the quality of accredited graduates using multiple-choice test as main assessment tool is proposed. Test questions related to the basic vocational skills of NCS are developed for seven of the 10 program outcomes of the ABEEK KEC2015. The three program outcomes, PO1, PO3, and PO5, which need to fully accommodate the characteristics of each disciplinary field, are excluded. A pilot test involving graduates of eight accredited programs is conducted. Applying on Rasch model based on Item Response Theory (IRT), the item difficulty, fit and discrimination of multiple choice test are demonstrated. The pilot study strongly suggests that individual competency evaluation is possible at a certain level for seven program outcomes tested. For PO1, PO3, and PO5, however, questions that address the characteristics of each disciplinary field need to be devised. If a suitable pool of questions is built, it can be used as a program outcomes assessment tool by the accredited programs.

• Journal of Welding and Joining
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• v.15 no.4
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• pp.11-23
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• 1997

시험편을 용접할때 사용한 용접 변수의 기록서인 PQR(Procedure Qualification Record)은, 용접구조물을 제작하는 제조 업체에서, 수시로 PQ Test를 수행하여 작성되고 있으며, 가장 기본적이고 중요한 용접 데이터이기 때문에 소중하게 관리되고 있다. 그리고, PQR의 수량이 많아지면, 관리에 많은 어려움이 따르고, 필요 한 데이터를 찾는데 많은 시간이 소요될뿐만 아니라, 정확한 데이터를 찾아내는 것도 쉽지가 않다. 따라서, PQR 관리 시스템을 개발하여, PQR의 데이터를 쉽게 활용하고, 자료 검색을 간단하게 할 수 있으며, PQR의 작성을 간편하게 하고자 PQR 관리 시스템 을 개발 하였다. 본 시스템의 특징은 PQR 양식을 새롭게 표준화하여 출력할 수 있게 하였고, PQR 작성을 처음 시작하는 사용자도 쉽게 배워 업무에 적용할 수 있다. 이는 용접 전문가의 노하우가 데이터 베이스에 내재되어 있어 서로 관련된 정보의 반복 입력이 적으며, 한 개의 데이터로 다른 데이터가 자동 결정되고, 데이터의 입력방식 이 키인(Keyboard Input)이 아닌 리스트(List)에서 선택하는 방식으로 하였다. 또한, 용접부 개선 형상의 Outline을 제공하여 수작업의 부담을 줄였으며, 검색의 기능이 강력하여 검색조건 선정에 제한이 없다. 그러므로, 본 시스템은 전반적으로 용접전문 가의 지식을 프로그래밍한 지능성, 전문성, 복합성을 가진 시스템이라 할 수 있다. 본 고에서는 ASME CODE에 따라서 작성되는 PQR의 관리 시스템을 소개하고자 한다.

• Journal of the Korean Society of Safety
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• v.13 no.4
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• pp.286-291
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• 1998

This paper includes discussion on developing the test verified finite element model for one of the seismic qualification(safety) approaches. It presents a test verified finite element model of a UPS(Uninterruptible Power Supply System) to be used at KMRR, KAERI. The test verified model predicts natural frequencies within 5 percent error for all major modes below 50Hz. This model accurately represents the dynamic characteristics of the actual hardware and is qualified for its use in the final stress analysis for seismic verification.

• 한국신재생에너지학회:학술대회논문집
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• 2007.11a
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• pp.165-168
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• 2007

The objective of this study is to demonstrate and commercialized for on-board fuel storage system for the hydrogen fuel cell vehicles. Type3 composite cylinder is consisting of the full wrapped composites on a seamless aluminum liner. Especially, the seamless aluminum liner has been commercialized with development of fabrication through this study. The key technologies, including design, analysis and the optimized filament winding process for 350bar composite cylinder, were established and verified with design qualification test in accordance with international standard. And the facilities for fabrication and design qualification test have been constructed.

• Journal of the Korean Society of Industry Convergence
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• v.22 no.6
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• pp.627-635
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• 2019

In this study, we developed for processing complex features using CAM software that satisfies precision for example practice and related qualification tests suiTable for CNC training purposes. In addition, functions such as location control, speed control, and processing path generation, which are the main functions of CNC machining machines, were constructed using small equipment parts, servo motors, inverters, general purpose PCs, and commercial NC software and researched with the goal of developing low-cost education equipment. In the static accuracy inspection, the degree of machine when measuring the parallelism of the X, Y and Z axes and the vibration of the main shaft did not reach the allowable value. However, we have obtained a finished product that satisfies the CNC machine book sample shape machining, detailed functions of the position control function of the CNC machine tool, linear interpolation function, circular interpolation function, and tool offset function. In the qualification test shape processing, a shape with a degree of 1/100 mm was processed to obtain position accuracy that satisfied the tolerance.

• KSCI Review
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• v.14 no.1
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• pp.221-228
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• 2006

In this paper we propose an active learning method that makes a database for the information about certificates and practical examinations and accesses it easily. First of all, this method makes it possible to evaluate students individually, improves the motive of learning and gives students a sense of achievement by providing a user-specific question filtering technique using user pronto information by weight. And, it elevates the acquisition rate of certificates by advising and managing for certificate-acquisition and it also draw more interest and understanding for future directions.

• Proceedings of the Earthquake Engineering Society of Korea Conference
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• 1998.04a
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• pp.147-154
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• 1998

The purpose of this paper is to propose the draft guidelines of seismic isolation design of Liquid Metal Reactor (LMR) using high damping laminated rubber bearings. The scopes of guidelines include design requirements of a seismically isolated system and components, seismic isolator, isolation system, interface system between seismic isolation and non-seismic isolation part, qualification and acceptance tests of seismic isolator, seismic isolation reliability, and seismic safety and monitoring system. Proposed guidelines shall be revised to extend to general design guideline for nuclear facilities by further research and discussions.

• Journal of radiological science and technology
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• v.23 no.1
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• pp.63-76
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• 2000

License system of radiologic technologists has been started since 1965 in Korea. This study is to explore directions on radiotechnologists' license system classified by subspecialty. For this purpose, the authors surveyed on radiotechnologists' license system classified by subspecialty, with the subject related to radiotechnologic societies. Additionally, data on qualification and license system associated with medical and health care field were collected. The results are as follows. 1. The main body for subspecialty system for radiologic technologists should be the Korea Radiologic Technologists Association and the Association should maintain a close cooperation with radiotechnologic societies. 2. A radiologic technologist should be a basic role once they pass the license examination. In addition, they can get a special qualification by subspecialty in radiologic technology. 3. Radiotechnologists' license system classified by subspecialty will be keep priorities in order and done systematically. Execution order is as follows ; This study proposes that radiotechnologists responsible for ultrasonography, computed tomography(CT), magnetic resonance imaging(MRI) and security management be started for the first stage. For the second stage, radiotechnologists for mammography, angio-cardiography, digital imaging, maxillo-facial and dental radiography, nuclear medicine, radio-therapeutic field should be in force. 4. Professional education course(basic and intensive) and clinical training program have to be made for the eligibility of radiotechnologists' license system classified by subspecialty. 5. Eligibility system of radiotechnologists' license system classified by subspecialty(non-government or government) has to be made. Further more, inquiry commission to investigate eligibility for radiotechnologists' license system should be established.