• Journal of Science and Technology Studies
• /
• v.17 no.2
• /
• pp.113-171
• /
• 2017

Science and engineering college students, so-called engineering students, account for nearly half of Korean university students. Existing research on younger generations poses a question of young generation after the financial crisis as a 'genuine' survivalist who carries out 'passionate labor' to pursue 'ordinary life' and 'banal stability'. They are diagnosed as failing to "locate the course of their lives in relation to a larger being that transcends self". But is there a value that can replace the survival value in front of us today, which is possible to be practiced and narrated by the young generation of Korea, especially the engineering students? What value (if any) is not captured by survival value, and what mechanisms and processes can and can easily be used by engineering students? Our research uses interviews conducted at one research-centered science and engineering university in a local metropolitan city, Korea. In conclusion, we emphasize that a transformed version of developmental nationalism, in which individual scientists/engineers pursue their 'authentic' passion and unintentionally contribute to the development of the nation through byproducts of their research, exerts strong influence upon the formation of young engineering students' narratives linking their selfhood and the good.

• Archives of Craniofacial Surgery
• /
• v.12 no.2
• /
• pp.116-120
• /
• 2011

Purpose: Scalp avulsion is a life-threatening injury that may cause trauma to the forehead, eyebrows, and periauricular tissue. It is difficult to treat scalp avulsion as it may lead to severe bleeding. Therefore, emergency scalp replantation surgery is necessary, and we must consider the function, aesthetics, and psychology of the patients. A case of scalp avulsion leading to massive bleeding was encountered by these authors, which led to a failure to achieve the proper operation conditions in an adequate time period. Methods: A 49-year-old female was hospitalized due to having had her head caught in a rotatory machine, causing complete scalp avulsion which included the dorsum of the nose, both eyebrows, and ears. Emergent microsurgical replantation was performed, where a superficial temporal artery and a vein were anastomosed, but the patient's vital signs were too unstable for further operation due to excessive blood loss. Three days after the microanastomosis, venous congestion developed at the replanted scalp, and a medicinal leech was used. Leech therapy resolved the venous congestion. A demarcation then developed between the vitalized scalp tissue and the necrotized area. Debridement was performed 2 times on the necrotized scalp area. Finally, split-thickness skin graft with a dermal acellular matrix ($Matriderm^{(R)}$) was performed on the defective areas, which included the left temporal area, the occipital area, and both eyebrows. Results: The forehead, vertex, right temporal area, and half of the occipital area were successfully replanted, and the hair at the replanted scalp was preserved. As stated above, two-thirds of the scalp survived; the patient could cover the skin graft area with her hair, and could wear a wig. Conclusion: Complete scalp avulsion needs emergent replantation with microsurgical revascularization, but it often leads to serious vital conditions. We report a case with acceptable results, although the microanastomosed vessel was minimal due to the patient's unstable vital signs.

• Korean Journal of Comparative Education
• /
• v.27 no.3
• /
• pp.213-238
• /
• 2017

This paper aims to point out that the contemporary textbook is a common cognitive construct, and that the realistic drawings in the textbooks have played an important role in shaping the world recognition. The main subjects of this study are the racial-ethnic illustrations of elementary school geography textbooks, published by the Japanese Ministry of Education, the Japanese Government-General of Taiwan and Korea, the educational association of Manchu. By comparing the same factors in various textbooks, it examines how the temporal and spatial recognition of the world is adjusted by visual representation. The main findings of this study are three fold. First, the world was introduced to the extent of the sum that the census and the classifications of racial and ethnic groups were adopted. And the world appeared later in the year supported by the racial and ethnic minorities. Second, the expressive style of racial and ethnic groups changed from an emphasis on a heterogeneous part as an object of scientific observation in the early stage to a later one with a life culture similar to the reader. Third, racial ethnic illustrations have been used differently depending on the publishing region in the Empire, giving readers in different regions with different images of the same category. In many cases, it was possible to know the politics of representation and the use of certain racial ethnic illustrations. The textbooks of the first half of the 20th century gave great recognition to the people who could not meet with the readers by using the illustrations. A child in the mainland is aware of his position in a "viewing position" while viewing various empire people through the textbook. On the other hand, in the textbooks of the colonial children, they stood in the position of 'being seen', and showed a change in internalizing the position of the mainland along with the expansion of the empire.

• Journal of the Korea Society of Computer and Information
• /
• v.24 no.11
• /
• pp.79-86
• /
• 2019

It is very important to analyze and provide information resources for research output produced in the computer field, the core science of the 4th Industrial Revolution. In this paper, SCI journals cited from domestic journals in the computer field were identified and the citation rankings and their co-citation networks were generated, analyzed, mapped and visualized. For this, the bibliographic and citation index information from 2015 to 2017 in the KSCD were used as the basis data, and the co-citation method and network centrality analysis were used. As a result of this study, the number of citations and the citation ranks of SCI journals and papers cited by korean journals in the computer field were analyzed, and peak time(2 years), half-life(6.6 years), and immediacy citation rate(2.4%) were measured by citation age analysis. As a result of network centrality analysis, Three network centralities(degree, betweenness, closeness) of the cited SCI journals were calculated, and the ranking of journals by each network centrality was measured, and the relationship between the subject classifications of the cited SCI journals was visualized through the mapping of the network.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
• /
• v.15 no.2
• /
• pp.252-260
• /
• 2002

Introduction Urticaria is widely spread disease. About 15-20 $\%$ of population has experienced at least once in a life time. The etiology of urticaria is uncertain till now, and the affcting factors are various chemical material, physical factors, alcohol, fever, exercise, and hormone, etc. The symptoms of urticaria are small or large wheal-erythema reaction and itching or tingling sense. Cause there is no probe to detect the urticaria clearly, the treatment of urticaria is symptomatic. And mostly urticaria can be chronic and very hard to treat it fundamentally. Nowadays, many trials to treat the urticaria in oriental medical way show good curability. In this paper I'd like to report the treatment rate and degree of urticaria patients mostly using anti-histamine medication. Subjects From the outpatients who visited Korean Hospital of Kyunghee Kangnam during 2000-4 and 2002-1, the 36 chronic urticaria patients, at least more than 4 weeks from onset and 2weeks of treatment period, were chosen. Methods I evaluated the results of treatment with the following scale. Very Good: The all symptoms are clearly disappeared or one third of symptoms remain and sometimes eruption is appeared. Good: Half of the symptoms are improved but most of symptoms remain. No Change: No change appears before and after treatment. Worse: The degree and duration of eruption get worse than pre-treatment state. Results For Acupuncture treatment, I chose the several Acu points like Hapgok(합곡), Taichung(대충), Gokji(곡지), Yanggok(양곡), Yanggea(양계), and lmeup(족임읍), and usually lasted it 15 minutes. With the acupuncture treatment and herb medicine, 2-3 times a week, the patients whose treatment period was 2 to 4 weeks were 17(47.2$\%$), 4 to 8 weeks were 11(30.5$\%$), 8 to 12 weeks were 3(8.3$\%$), 12 to 16 weeks were 3(8.3$\%$), longer than 16 weeks were 2(5.5$\%$) Collecting the statistics of the frequency of prescripted herb medicine, Hyangsosan(향소산) was prescripted 21 times(58.3$\%$), Hyangsapyungwisan(향사평위산) was 15 times(41.6$\%$), Hwapisan(화피산) was 9 times(25$\%$), Yangwitang(양위탕) was 6 times(16.6$\%$), Bojungikkitang(보중익기탕가미) was 4 times(11.1$\%$), Yongdamsagantang (용담사간탕가미) was 4 times(11.1$\%$). The result of the treatments, evaluating with mentioned rate scale, was 11 cases(30.5$\%$) were Very Good degree, 19 cases(52.7$\%$) were Good , 6 cases(16.6$\%$) were No Change. No cases were Worse degree. Conclusion According to this research, we could say that chronic urticaria can be treated with Oriental medical methods. But more precise probes in both Oriental and Western medicine to diagnose the chronic urticaria should be established and we need to make standards for testing and diagnosing the chronic urticaria.

• Korean Journal of Soil Science and Fertilizer
• /
• v.44 no.6
• /
• pp.1063-1070
• /
• 2011

In this study, total of 5 different chemical amendments were evaluated for determining kinetic parameters and stabilization efficiency of heavy metals in aqueous phase. Standard solution of Cd and Pb ($100mg\;L^{-1}$) was mixed with various ratio of amendments (1, 3, 5, 10%) and heavy metal stabilization efficiency was monitored for 24hrs. All examined amendments showed over 90% of removal efficiency for both Cd and Pb except zerovalent iron (ZVI) for Cd (43-63%). Based on result of heavy metal stabilization efficiency, it was ordered as $CaCO_3$ > Dolomite > Zeolite > Steel slag > ZVI for both Cd and Pb in aqueous phase. For kinetic study, first order kinetic model was adapted to calculate kinetic parameters. In terms of reaction rate constants (k), zeolite showed the fastest reaction rate (k value from 0.4882 for 1% to 2.0105 for 10%) for Cd and ZVI (k value from 0.2304 for 1% to 0.5575 for 10%) for Pb. Considering reaction rate constant and half life for heavy metal stabilization, it was ordered as Zeolite > $CaCO_3$ > Dolomite > Steel slag > ZVI for Cd and $CaCO_3$ > Dolomite > Steel slag > Zeolite > ZVI for Pb. Overall result in this study can be interpreted that lime containing materials are more beneficial to remove heavy metals with high efficiency and less time consuming than absorbent materials.

• Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
• /
• v.9 no.1
• /
• pp.845-858
• /
• 2019

The most serious problem company facing in today's business environment is the failure of new product development outcomes. Statistically, almost half of the new products released each year failed. Despite the innovative technological advances, consumers' expectation level become much higher and global competition is intensifying. In addition, the new product life cycle is becoming shorter and shorter. It is difficult for a company to survive without developing long-lived products. The most important issue in a company's success and failure is the successful development and introduction of new products. Previous research has presented many determinants to achieve a successful new product development. This study focuses on dynamic competence as an important determinant, and identifies the constituting elements. Enterprises need to acquire, absorb, integrate and reconfigure their resources to survive and develop continuously. It is necessary to hold a dynamic ability switching resource bases in order to adapt to changing environments. The results of this study are as follows: First, the effect of learning, reconfiguration, and alliance capabilities on the new product development of small and medium-sized manufacturing enterprises seems to be positive. Second, the integrative and reconfiguration capabilities positively affect a new product development under high environmental turbulence.

• Vascular Specialist International
• /
• v.34 no.4
• /
• pp.94-102
• /
• 2018

Purpose: Aim of this study is to report real-life experience on the treatment of peripheral artery disease (PAD) with a specific drug-coated balloon (DCB), and to evaluate potential prognostic factors for outcomes. Materials and Methods: This is a retrospective study reporting outcomes in patients with PAD who were treated with the Lutonix DCB during a four-year period. Major outcomes included: all-cause mortality, amputation, clinical improvement, wound healing and target lesion revascularization (TLR). Mean follow-up was $24.2{\pm}2.3$ months. Results: Overall, 149 patients (mean age: $68.6{\pm}8.3$ years; 113 males) were treated, either for intermittent claudication (IC) (n=86) or critical limb ischemia (CLI) (n=63). More than half the target lesions (n=206 in total) were located in the superficial femoral artery and 18.0% were below-the-knee lesions. CLI patients presented more frequently with infrapopliteal (P=0.002) or multilevel disease (P=0.0004). Overall, all-cause mortality during follow-up was 10.7%, amputation-free survival was 81.2% and TLR-free survival was 96.6%. CLI patients showed higher all-cause mortality (P=0.007) and total amputation (P=0.0001) rates as well as lower clinical improvement (P=0.0002), compared to IC patients. Coronary artery disease (CAD), gangrene and infrapopliteal disease were found to be predictors for death whereas CLI and gangrene were found to be predictors for amputation, during follow-up. Conclusion: PAD treatment with Lutonix DCBs seems to be an efficient and safe endovascular strategy yielding promising results. However, CAD, gangrene, CLI and infrapopliteal lesions were found to be independent predictors for adverse outcomes. Larger series are needed to identify additional prognostic factors.

• Journal of the Korean Society of Radiology
• /
• v.13 no.2
• /
• pp.297-303
• /
• 2019

The nuclear medicine department of a domestic medical institution uses $^{99m}TcI$, a radionuclide, from $^{99}Mo/^{99m}TcI$ Generator, to inject radioactive drugs into patients. Among the expired generators, imported from foreign countries, the medical institution implements its own disposal. Each medical institution shall satisfy the permitted in-house disposal concentration of radioactive wastes. The guidelines for self-disposal presented in Korea suggested that self-disposal can be performed 80 days after the generator is used. The purpose of these guidelines is to analyze them by comparing them with the data measured directly with the generator and to study if they are feasible. As a result, the generator with a capacity of 1,000 mCi has the longest half-life, and when tested with a high-radiation Mo(molybdenum) column, the number of days that are below the permitted concentration of body disposal with radioactive waste was 72 days and 71 days that were derived from direct column measurement. The results of the direct study confirmed that the guidelines for in-house disposal in Korea were reasonable, as there were 8 to 9 days of storage compared to the number of in-house disposal days provided in the guidelines.

• Journal of Veterinary Clinics
• /
• v.36 no.1
• /
• pp.46-52
• /
• 2019

Pimobendan has inotropic and vasodilating effects on cardiovascular system, and pentoxifylline is known to decrease blood viscosity and improve blood flow to the heart. This study investigated the pharmacokinetics and pharmacodynamics following oral administration of pimobendan-pentoxifylline powder mixture in dogs. Eight healthy dogs were included and were divided into control (n = 4) and experimental (n = 4) groups. Vehicle powder and pimobendan-pentoxifylline powder mixture (pimobendane 0.25 mg/kg, pentoxifylline 15 mg/kg) were administrated orally to control and experimental groups, respectively. Plasma samples and measurement of echocardiographic indices were obtained for 24 hours following administration. Pimobendan and pentoxifylline concentrations were investigated using liquid chromatography-mass spectrometer (LC-MS) assay. The elimination half-life ($T_{1/2}$) were $2.65{\pm}1.42hours$ for pimobendan and $0.29{\pm}0.23hours$ for pentoxifylline. The time to reach maximum concentration ($T_{max}$) were $1.08{\pm}0.72hours$ for pimobendan and $0.29{\pm}0.14hours$ for pentoxifylline. The maximum blood concentration ($C_{max}$) were $2.83{\pm}1.50ng/mL$ for pimobendan and $1184.33{\pm}932.37ng/mL$ for pentoxifylline. Among echocardiographic indices, fractional shortening (FS), left ventricular internal diameter at end systole (LVIDs), and pre-ejection period (PEP) showed significant changes at 1-4 hours after the administration of pimobendan-pentoxifylline powder mixture. No adverse effects were observed during the investigation. This study demonstrates that pimobendan-pentoxifylline powder mixture can be used to control cardiovascular diseases in dogs.