• Journal of Korean Society of Occupational and Environmental Hygiene
• /
• v.30 no.3
• /
• pp.249-255
• /
• 2020

Objective: The purpose of this study was to provide technical information about the management of occupational exposure limits(OELs) for substances with completely revised ACGIH TLVs. Methods: The history of ACGIH TLVs for aluminum compounds, the reason for the complete revision of the related ACGIH TLV in 2008, and OELs for them in respective countries were reviewed. In addition, the results of a 2019 work environment assessment for aluminum compounds in Korea were reviewed. Results: In 1979, the ACGIH set up the TLVs for aluminum compounds considering types of compounds such as metal dust, pyro powders, welding fumes, soluble salts, alkyls, and aluminum oxide. However, in 2008 the ACGIH withdrew the TLVs for all types of aluminum and its compounds and adopted new TLVs for aluminum metal and insoluble compounds. This can cause confusion in many countries in the management of exposure to aluminum compounds because they adopt or refer to the ACGIH TLVs. Conclusion: Although Korea is setting occupational exposure limits by referring to the ACGIH's TLVs, it is necessary to sufficiently review whether it is necessary to accept the TLVs as they are if a TLV is completely changed, like took place with the revision of aluminum compounds in 2008.

• Journal of Korean Library and Information Science Society
• /
• v.39 no.2
• /
• pp.29-37
• /
• 2008

The writer of this study analyzed the traces that are made by revising and replenishing after finishing engraving of Chojodaejanggyeong into the Vol.60 Abstract of Tripitaka Koreans 周本 Hwayemgyeong. It can be a clue that proves the revising of Chojodaejanggyeong was considerably complete.

• The korean journal of orthodontics
• /
• v.45 no.3
• /
• pp.146-150
• /
• 2015

Many clinicians expect complete healing after the removal of temporary anchorage devices, but clinical examination may reveal scar-like tissue. This report presents the typical features of scarring detected after the removal of miniscrews, and the clinical outcome of scar revision along with its pathologic features.

• Journal of Trauma and Injury
• /
• v.36 no.1
• /
• pp.65-69
• /
• 2023

The surgical approach for humeral implant failure can be challenging due to neurovascular anatomy and the possible necessity of osteosynthesis removal. We present a rare case of humeral nail bending after secondary trauma in a patient with preexistent nonunion of the humerus after intramedullary nailing. During revision surgery, the nail was sawed in half and the distal part was removed, followed by plate osteosynthesis with cable fixation to achieve absolute stability. The patient regained a full range of motion 1 year after surgery, and complete healing of the fracture was seen on imaging.

• (The)Korea Educational Review
• /
• v.22 no.1
• /
• pp.25-51
• /
• 2016

This study was designed to analyze instructors's perceptions on legislation of the amendments of the Higher Education Law in 2011 and discuss some issues related to direction for revision henceforth. This study explored two research questions. First, how do instructors perceive the legislation of the amendments of Higher Education Law? Second, how do they think the directions for the revision of the law? To complete this task, the author conducted in-depth interviews with 16 interviewees; 13 instructors and 3 specialists of the higher education. As a result of in-depth interviews, the author found that instructors perceive the law as condescending law or election-based law even though they recognize the significance of the law. They predict that the law can increase non-tenure track faculty members. In addition, they emphasize the law should be revised to improve the instructors' labor condition substantially, for instance increase of the teaching pay and employment stabilization. However, instructors' opinions on the law itself and its revision direction are divided according to their age and major. Based on the results of this study, I discussed some potential issues of the revision of the law and suggested improvement plans.

• Journal of the Korean Society for Library and Information Science
• /
• v.26
• /
• pp.75-112
• /
• 1994

The purpose of this study is to investigate the problems concerning 780 music division of DDC. The object is especially arrangement of 780 music in the 20th edition of DDC which is the complete revision. The result is summarized as follows : 1. Although music is an important subject in humanities, especially in arts, it was classified as one division (780) not class. 2. The arrangement of 780 music is severely west-oriented music theory, vocal music and instrumental music. 3. Classification number of 780 music becomes longer because of the limitation of decimal notation. 4. 780 music division of DDC neglects music theory and emphasizes music practicing, especially performance. 5. The assignment of classification number is unbalanced, especially between theory and practice, composition and performance, and among sub-sections of vocal and instrumental music. 6. Many important subject are omitted in DDC music schedule, for example, musicology and branches of musicology, composition and traditional instruments of many countries. 7. Employment of terminology is often improper and inconsistant.

• Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
• /
• 2006.04a
• /
• pp.491-494
• /
• 2006

Many urban-plan facilities were settled by the government in the need of infrastructure due to the rapid urbanization. The Constitutional Court judged that the exclusion of land-owners' private right to use their land did not accord with the Constitution, and the infringement of their right because of currently unexecuted facilities became the urgent task to be solved due to the revision of the Urban plan law revised on January 28, 2000. Accordingly, the government needed to establish a complete plan to review and rearrange the long-term unexcuted urban plan facilities. For this plan to be successful, we have constructed the database of unexecuted urban plan facilities by using GIS analysis technique in this research. Further, we will construct a basic database to manage the unexecuted urban plan facilities by utilizing the database we have constructed, computerized geographical information files of LMIS, urban plan facilities data of UPIS, and other information.

• English Language & Literature Teaching
• /
• v.13 no.4
• /
• pp.1-32
• /
• 2007

This study took a cross-sectional, quantitative approach and profiled EFL students' awareness of the writing process and of teacher feedback. The subjects were 113 college students aged 19-26 years from non-English majors, who were enrolled in three sections of a required English course. According to the scores gained from the essay writing assignment, they were divided into two groups (proficient and less-proficient writers) and responded to an in-class survey. Major findings were that: (1) the vast majority of both groups did not find English writing enjoyable; (2) longer comments gave rise to substantial changes to the students' revisions; (3) the less-proficient writers were shown to benefit from revision significantly more than the proficient writers; (4) Both groups of writers utilized multiple strategies to process teacher feedback and preferred to receive teacher comments using complete sentences rather than phrases or single words; and (5) teacher's marks on grammar and vocabulary claimed to be most conducive to EFL writing development. Several important implications for EFL writing instruction and for future studies are suggested.

• Clinics in Shoulder and Elbow
• /
• v.23 no.3
• /
• pp.152-155
• /
• 2020

Periprosthetic fracture after total elbow replacement surgery is a difficult complication to manage, especially when it comes together with implant loosening. If stem revision and internal fixation of the periprosthetic fracture are performed simultaneously, this would be a very challenging procedure. Most of total elbow replacement implants are cemented type. Cement usage at periprosthetic fracture site may interfere healing of fractured site. Authors underwent internal fixation with use of locking plate and cerclage wire for periprosthetic fracture, allogenous fibular strut bone inserted into the humerus intramedullary canal allowing the fractured site to be more stable without cement usage. At 10-month follow-up, the complete union and good clinical outcome was achieved. We present a novel technique for treating periprosthetic fracture with implant loosening after total elbow replacement surgery, using intramedullary allogenous fibula strut bone graft.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.7 no.1
• /
• pp.1-9
• /
• 1982

This study, noting the provisions of the complete revision of the International Frequency Administration System, mainly frequency allocations of the Broadcasting Service and the Broadcasting-Satellite Service forming part of the World Radio Administrative Conferences, 1979, bearing in mind the development of International Frequency Administration System and international trends, with a view to attempting the effective utilization of frequencies which may be adapted for those plans of the service in the future, is analysed and considered on the points and improvement of frequency allocations.