• Korean Management Science Review
• /
• v.29 no.2
• /
• pp.167-184
• /
• 2012

Business diversification is inevitable to survive under the current competitive business environments. The advent of new businesses makes corporate governance more complicated through corporate combinations. Recent introduction of new accounting standard, International Financial Reporting Standards(IFRS), accelerates the need for corporate governance analysis. This study analyses the complex corporate governance system and its relation to the business performance using social network analysis. Corporate inter-governance networks can be visualized easily in a social network diagram. 552 corporate governance data are empirically analysed in the Korean stock market. The changes in In-Degree between networks are positively related with the changes in corporate sales volume. We can find the same results using operating profits as corporate performance proxy. The results show that social network analysis technique can be applied to investments in the stock markets.

• Journal of the Korean Professional Engineers Association
• /
• v.34 no.4
• /
• pp.65-68
• /
• 2001

The role of information system(IS) audit is growing more important according to rapid change of Information technology. This article is to introduce what is IS audit, purpose and effect of IS audit. Now most clients of private IS audit services companies are the public sector. Korean public sectors invest a lot of money to build or implement their information system. Most of their systems are developed by system intergration companies. But they do not have professional engineers to evaluate and review outsourced information system. Therefore they must use outside private professional engineers for sysem auditing. We, including writer, established the first IS audit sevice company in Korea on September in 1997. After that about 15 IS audit service companies are established until now. The effect of IS audit is highly evaluated In public sector by the clients Most clients think IS audit service contributed to upgrade the quality of software and standard the methodology of developing system

• Journal of Korean Neurosurgical Society
• /
• v.58 no.6
• /
• pp.560-562
• /
• 2015

It is well known that spinal instability should be evaluated in the standing lateral position. Standing dynamic flexion and extension radiographs are usually used to assess spinal instability. Here, we report a patient who experienced distraction instability while in the supine position rather than the standard standing position. To our knowledge, this is the first report of lying-down instability undetected on standing dynamic flexion and extension radiographs. We discuss the pathophysiological mechanism of this uncommon but possible entity and provide a review of the literature.

• Journal of Information Technology Services
• /
• v.8 no.4
• /
• pp.165-174
• /
• 2009

This paper outlines opportunities and challenges in the implementation of BPEL based WFMS(WorkFlow Management System) for the MES(Manufacturing Execution Systems) in semiconductor manufacturing. At present, the most MESs in semiconductor wafer fabrication shop have the problems in terms of application software integration, reactivity, and adaptability. When a plant has to produce new product mix, remodel the manufacturing execution process, or replace obsolete equipments, the principal road blocks for responding to new manufacturing environment are the difficulties in porting existing application software to new configurations. In this paper, the issues about WFMS technologies including BPEL standard applied for MES are presented. And then, we introduce the integrated development framework named nanoFlow which is optimized for developing the BPEL based WFMS application for automated manufacturing system. And we describe a WFMS implemented with using nanoFlow framework, review and evaluate the system.

• Journal of Korean Medical classics
• /
• v.23 no.4
• /
• pp.155-167
• /
• 2010

Two Fructus Jujubae & three Rhizoma Zingiberis Rencns are usually used in parts of prescriptions in oriental medicine. In "Dongeuibogam", those are prescribed as drugs. However, those are not exactly same with original books, which "Dongeuibogam" had quoted. In original books, those are sometimes mentioned just as 'Fructus Jujubae & Rhizoma Zingiberis' or different amount of them. Therefore, authors try to compare with "Dongeuibogam" and its original books to find out the reason of discordance. As a result, we could conclude that Two jujubes & three pieces of ginger are more commonly prescribed than original books and are fixed to use more conveniently and to give standard for doctor.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2011.11a
• /
• pp.19-20
• /
• 2011

This paper compares the English language programs of two maritime institutes in very different parts of the world, South Korea and Belgium. It will show that although both institutes comply with the minimum standard set by the STCW Code issued by the IMO, requirements for entry and graduation can vary greatly. Method of class delivery, choice of learning tools and testing systems will also be examined to illustrate these differences. It will also shown that in order to train new seafarers in the best possible ways that will fulfill the IMO mandate of Safer Shipping and Cleaner Oceans, examination of course curriculum at any maritime institute should be an ongoing process so that cadets are encouraged to communicate in a targeted, efficient and professional way within a nautical context.

• Proceedings of the KSR Conference
• /
• 2003.10b
• /
• pp.596-601
• /
• 2003

After the development of practical technology for tilting system, tilting trains are operated on conventional lines of KORAIL. As the running speed of trains is increased, it is very important to investigate the dynamic characteristics of plate girder bridges with direct track fixation. Therefore, this paper reviews the dynamic interactions between tilting train and welded plate girder bridges designed by L-22, a standard load type of KORAIL. The span lengths of plate girder analyzed here are 6.6m, 9.7m, 12.9m, 16.0m, 19.2m, 22.3m, 25.4m and 31.1m. Using 2-D dynamic analysis, the critical velocity of tilting train, vertical deflection ratios of plate girder and maximum accelerations of car body are calculated. And the analytical results are compared with those of design criteria.

• Proceedings of the KSR Conference
• /
• 2004.06a
• /
• pp.583-588
• /
• 2004

Opening commercial service of KTX at the time of demanding more flexible train set for HONAM line and JEONLA line, it's necessary for the Korean High speed train, performing the stabilization; to modify the design in aspect of passenger and maintenance. In order to ensure the optimized interior design in Korean High speed train, it is necessary to review the major items such as disabled passenger facility, toilet, seat arrangement, compartment partition and door, access door, electrical cabinet, color and paint through the European standard and compare with other high speed train.

• Proceedings of the KSRS Conference
• /
• 2004.10a
• /
• pp.224-227
• /
• 2004

From 1980's, the DWT(Discrete Wavelet Transform) is applied to the data/image processing. Many people use the DWT in remote sensing for diversity purposes and they are satisfied with the wavelet theory. Though the algorithm for wavelet is very diverse, many people use the standard wavelet such as Daubechies D4 wavelet and biorthogonal 9/7 wavelet. We will overview the wavelet theory for discrete form which can be applied to the image processing. First, we will introduce the basic DWT algorithm and review the wavelet algorithm: EZW (Embedded Zerotree Wavelet), SPIHT(Set Partitioning in Hierarchical Trees), Lifting scheme, Curvelet, etc. Finally, we will suggest the properties of wavelet algorithm; and wavelet filter for each image processing in remote sensing.

• Journal of Chest Surgery
• /
• v.25 no.10
• /
• pp.1121-1124
• /
• 1992

Rupture of a bronchus is an unusual result of blunt trauma to the chest. We experienced a case of bronchial rupture caused by blunt chest trauma without external wound or rib fracture. This case was a 13 years old male who was elementary school student. He was compressed on anterior chest by basket ball goal post being failed down on the afternoon of admission day. After this accident, he was suffered from progressive dyspnea and chest pain. The bronchial rupture was confirmed by bronchogram, The operation was performed through standard posterolateral thoracotomy incision along the 5th rib course. The right upper lobe bronchus and intermediate bronchus was completely transected. The right upper lobectomy was done. The ruptured intermediate bronchus was connected direct simply. Post-operative course was uneventful. Thus we report this case of traumatic bronchial rupture with review of literature.