• 한국의학물리학회:학술대회논문집
• /
• 한국의학물리학회 2002년도 Proceedings
• /
• pp.454-456
• /
• 2002

The evaluation of interval changes between temporally sequential chest radiographs is necessary for the detection of new abnormalities or interval changes, such as pulmonary nodules and interstitial disease. For interstitial lung disease, the interval changes are very important for diagnosis and treatment. Especially, interstitial lung disease may show rapid changes in the radiographs, show changes in the entire lung field in minute detail, or show changes in multiple parts depending on the type. It is therefore difficult to have an accurate grasp of the condition of the disease only with conventional radiographs. The temporal subtraction technique which was developed at the University of Chicago, provides a subtraction image of the current warped image and the previous image. A temporal subtraction image, shows only differences and changes between the two images, can be very useful for a diagnosis of interstitial lung disease. However, the evaluation of the temporal subtraction technique for interstitial lung disease using receiver operating characteristic(ROC) studies has not been reported yet. Therefore, we have evaluated the clinical usefulness of a temporal subtraction technique for detection of interval changes of interstitial lung disease by ROC analysis.

• 생명과학회지
• /
• 제8권3호
• /
• pp.318-325
• /
• 1998

To investigate changes in protein and total lipid contents, seed storage protein pattern, and fatty acid composition of germination perilla(Perilla frutescens) seeds. Also, the corresponding value components in cotyledons, hypocotyles and roots were measured according to germination stage. The results were summarized as follows ; During germination, pertein and total lipid contents of Yepsilldalggae and Kwangyang cultivar were decreased continuously. In particular, protein contents rapidly decreased to the 3 days after germination(DAG), and then total lipid contents rapidly decreased between 3 DAG and 10 DAG. In changes of protein and total lipid contents of cotyledons, protein contents of Yeupsildalggae was increased during the germination, but Kwangyang cultivar was decreased during the same periods. The total lipids contents of Yeupsildalggae and Kwangyang cultivar were decreased during the germination. According to SDS-PAGE analysis, there was no detectible polypeptide bands on the gel before seed germination suggesting that this may be due to the rapid degradation of the storage proteins in the mature seed by hydrolyttic enzymes during the stage. During germinatation , the polypeptide band with 27$\sim$28KD of Yeupsildalggae and Kwangyang cultivar were accumulated gradually. In changes of fatty acid composition of total lipid of Yeupsildalggae and Kwangyang cultivar , saturated fatty acids such as palmitic acid and stearic acid increased during the germination. On the other hand, unsaturated fatty acid such as linoleic acid and linolenic acid decreased during the same periods. However, oleic acid increased to the 5 DAG, and then was repidly decreased.

• 의료법학
• /
• 제7권2호
• /
• pp.75-96
• /
• 2006

Having gone through socioeconomic changes from an agricultural to a post-industrial society, mental health system accordingly has been changed. In Korea where the socioeconomic change has been so rapid, the mental health system and law have been behind the socioeconomic system. Post-industrial society needs more humanized and advanced mental health system, however, Korean mental health law reflects ideology of Korean society in industrial age. This paper attempts to assess the significance Korea's Mental Health Law against the backdrop of socioeconomic changes. A substantial part of the report is devoted to identifying discrepancies between Korea's Mental Health Law and the perspectives of post-industrial ideology and areas for improvement. Improvement in mental health law should take place in line with the changes occurring in socioeconomic environments, the social concept of family, and the public awareness of human rights. Korea's mental health law should be changed in a way to improve hospitalization procedure for people with mental illness, promote the opening of mental health facilities and improve the quality of the lives of the mentally ill. Further changes are deemed necessary in the public and media view of mental illness. Also, the national budget will have to be increased with a view to raise the social rights of those with mental illness to receive quality rehabilitation services.

• 한국건설관리학회:학술대회논문집
• /
• 한국건설관리학회 2002년도 학술대회지
• /
• pp.323-326
• /
• 2002

최근 수주 물량의 급격한 감소, 업체의 무분별한 난립, 해외시장 진출의 어려움과 같은 외부적 환경 요인은 건설업체로 하여금 경쟁력 강화를 위한 자체적인 체질 개선을 요구하고 있다. 이에 대응하여 대형건설업체를 위주로 다양한 경영 혁신이 시도되고 있으며, 정보시스템의 구축을 통해 업무 효율과 회사 전체적인 생산성 향상을 위한 노력이 이루어지고 있다. 이러한 여러 가지 노력은 사업구조의 개편이나 업무 프로세스의 개선 등을 수반하게 마련이지만, 업무를 수행하는 당사자인 조직과 구성원에 대한 고려가 상대적으로 미흡한 것이 사실이다. 본 연구에서는 기업의 성과에서 조직이 차지하는 중요성에 대한 인식을 바탕으로, 건설업체 내 현장 조직이 가지는 변화의 가능성과 그 방향을 검토하였으며, 현장 관리업무 프로세스를 대상으로 관리혁신에 의한 조직 재설계 방안을 논의하였다.

• 무역상무연구
• /
• 제48권
• /
• pp.57-76
• /
• 2010

This study reviews maritime transport policy regarding liner conference and the changes in the liner market over the decades. Liner shipping industry has long been protected from competition by block exemption. To prevent excessive competition in punctual operation and its inelastic market structure, liner shipping companies formed conferences that are protected to fix the prices under the law. In the US, deregulation in transport sector began from 80's and continuing with OSRA 1998, conferences were dissolving. On the other hand, the EU with close conference system, Regulation 4056/86 contained block exemption remained in force for unlimited time without review clause. However, in Oct 2008, the EU has announced its removal, and conferences were no longer permitted to fix the price nor exchange information. Although OSRA 1998 has already broken up conferences by allowing individual service contracts, but the repeal of the immunity for price fixing will alter significantly the rule on cooperation in the industry since it is a unilateral move by the EU, especially in transatlantic lane. There are rapid changes in shipping market getting much more complicated, and with removal of 4056/86 allowing the market to be more competitive, opening up the industry with far more diverse strategic options. Hence this paper reviews on liner shipping industry and its changes of policies over the years from protected market to open competition market of today.

• 대한약리학회지
• /
• 제2권1호
• /
• pp.99-109
• /
• 1966

It has been known that the pronounced hypotension resulting from hemorrhage gives rise to compensatory stimulation of the adrenosympathetic system, which leads to an increase of liberation of catecholamines from sympathetic nervous system and adrenal medulla. It is obvious, therefore, that numerous physiological and biochemical changes during the hemorrhagic hypotention might be mediated through the increased liberation of catecholamines. Although an extensive studies have been reported on changes of protein and carbohydrate metabolism in hemorrhagic shock a few studies on the changes of lipid metabolism have been reported. Levenson(1961) observed a marked increase of serum lipids content during hemorrhagic shock and also noticed a marked elevation of serum free fatty acids. He suggested that these effects were due to mobilization and accelerated metabolic breakdown of lipids which might be resulted by sympathetic stimulation as a cause. To elucidate the mechanism of this, author studied the change of serum free fatty acids and blood sugar with relation to catecholamines during experimentally induced hemorrhagic shock in dog. Healthy male mongrel dogs weighing approximately 15kg were used. Under the general anesthesia with pentobarbital, rapid hemorrhage was produced from the femoral artery maintaining blood pressure level of 40 mmHg measured by the manometer connected with the opposite femoral artery throughout the experiment. Serum free fatty acids(FFA) and blood sugar were measured by the methods of Dole(1956) and Folin-wu,(1920) respectively. Tissue catecholamine was measured by Shore and Olin method(1958) using Aminco-Bowman spectrophotofluorometer.

• 농촌계획
• /
• 제25권4호
• /
• pp.35-45
• /
• 2019

Korean agriculture experienced rapid changes in its production structure to respond fluctuations on external conditions, and these changes have increased the dependence between agricultural resources and negative environmental externalities from agricultural production. As a tool for managing agricultural resources and reducing negative environmental effects from agricultural production, this study employs water-energy-food nexus for integrated resource management. To show the necessity of an integrated approach, this study evaluated three policy scenarios including changes in capital interest, water capacity, and energy cost. The results show that three scenarios have unintended consequences for farmers' incomes and their use of resources. Also the unintended consequences of government policies also affected farms' vulnerability to environmental changes. In particular, the expansion of financing for the establishment of non-circulating water curtain facilities did not have a significant effect on the crop switching of farms. In addition, increasing the amount of available water through the aquifer recharge project leads to the installation of non-circulating water curtain facilities in zucchini farm. It raises dependence on groundwater in agricultural production, thereby increasing farmers' vulnerability to groundwater shortages. These results imply that the agricultural sector needs to consider the interrelationship between agricultural resources when designing or evaluating policies.

• 대한원격탐사학회지
• /
• 제11권2호
• /
• pp.59-73
• /
• 1995

The study is focused on the analysis of geomorphological environment changes of alluvial bar in lower Kum river using satellite-based multitemporal/multisensor data. Landsat datas for environment changes analysis consists of Landset MSS(2 scenes) and Landset TM(7 scenes) acquired from 1979 to 1994. This study is to develop the analysis techniques for the environment change detection of using ratio, classification, false color composite etc, of Landsat data especially useful to the geomorphological study of tidal flats and river channels. The results of this study can be summarized as follows : 1. The lower Kum River alluvial bar have had rapid geomorphological changes after the construction of the temporary dam to block the river flowing in 1983. The most alluvial bar located in the river has both bankway growth, especially the allurival bar in the Lower Kum River had grown between 1983 to 1990. 2. After construction of the estuarine barrage, no remarkable geomorphological changes have been found in Kum River area but the growth and formation of new underwater bar has continued. The enormous materials was needed for the growth and formations of new underwater barrier oslands and bar would be supplied from the sea bottom and river sediment to diminish of stream velocity after construction of the estuarine barrage.

• 대한정형도수물리치료학회지
• /
• 제26권2호
• /
• pp.1-10
• /
• 2020

Background: This study aimed to investigate the effect of hold-relax and antagonist contraction (HR-AC) technique and Kinesio taping on pain changes in delayed-onset muscle soreness (DOMS) of 20's adults. Methods: Based on voluntary participation, 14 participants with induced-DOMS were randomly divided into control (non-treatment, n=7) and experiment group (HR-AC technique and kinesio taping, n=7). Measurement were used visual analogue scale (VAS), heart rate variability (HRV), and brain wave (alpha). There were 5 sets of the HR-AC technique application on the 5th day from the day of DOMS induction (rest for 30s between sets). Kinesio taping was applied to the same area after HR-AC. Results: The VAS showed significant changes according to the period and in the interaction between the period and the group (p<.01). HRV and alpha wave (Fp1) showed significant changes according to the period (p<.001). The analgesic effect was more rapid and continuous in the experimental group than in the control group. Conclusion: This study showed that the HR-AC technique and Kinesio taping are effective interventions for the management of pain and stress caused by DOMS.

• Educational Technology International
• /
• 제20권1호
• /
• pp.109-135
• /
• 2019

Rapid development of educational technology requires fundamental changes not only in the form of instruction and role of teachers in school education but also in the competency development of students. Specifically, the emergence of new technologies such as makerspace, virtual reality (VR), and robotics has made it more challenging for teachers and students in the 21st century. However, even with the argument for the changes, less has been discussed about how much in-service teachers are aware of and how they are preparing for such changes. Therefore, this study intends to explore what would be required to students and teachers, and for instructional changes with more technologies available through the lens of elementary school teachers. The study results suggest, similar to previous studies, in-service elementary teachers recognize that student competencies such as creativity, collaboration, communication, and problem-solving skills are important. They also perceived that teacher change in role and attitude, and for instructional method and classroom culture are crucial as catalysts of change. Unique and interesting finding from this study is about the importance of nurturing digital citizenship in technology-infused learning environment. The digital citizenship has been less highlighted in the past, but this study revealed it should be treated as a priority.