• Journal of Chest Surgery
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• v.32 no.3
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• pp.326-329
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• 1999

Pulmonary lymphangioleiomyomatosis is a rare disease occurring almost exclusively in woman of reproductive age. It is characterized by rapid deterioration of respiratory functions and results in death within an average of 10 years. This disease is caused by a progressive proliferation of atypical smooth muscle in the pulmonary lymphatic vessels, blood vessels, and airways leading to the development of distal cystic changes which causes frequent recurrent pneumothoraces. We experienced a case of pulmonary lymphangioleiomyomatosis in a 30-year old woman who had a history of bilateral, recurrent pneumothoraces. The patient underwent lung biopsy through right thoracotomy which revealed the diagnosis of pulmonary lymphangioleiomyomatosis. We report a case with a review of the literature.

• Journal of Technology Innovation
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• v.7 no.1
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• pp.1-13
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• 1999

In this article, we first present an inductive taxonomy of national R&D structures in terms of relative R&D flows among prime actors. The R&D structure of Korea, along with the Japanese one, turns out to be an ill-balanced one characterized by the dominant role of private sector, vis-a-vis the minimal share of public R&D. In nature, private R&D is sensitive to business cycle and the vulnerability of the Korean structure has been invisible under prosperity but now is disclosed under depression. This problem is nothing new and indeed has long been recognized by the Korean government but the prescription seemed almost impossible. Ironically, the current economic crisis of Korea renders an unexpected opportunity for structural reform. As private firms are cutting down R&D investment, the relative share of public sector becomes significant. A simulation predicts that balanced systems will be achieved in some years if public R&D budget is kept up. Although the contraction of private R&D is by no means desirable, it is the right time for the Korean government to expand public R&D. Public R&D should be considered not only a remedy for market-failure but also a shock-absorber against cyclic instability. This is why the balance between public R&D and private R&D is emphasized.

• Journal of the Korean Society of Food Science and Nutrition
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• v.29 no.2
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• pp.288-293
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• 2000

This study was carried out to investigate the effect of crude saponin fracton from Korean red ginseng on physiological events of ovariectomized rats. The saponin fractions was prepared by Diaion HP-20 adsorption chromatography and spirit. Total 50 rats were divided into 5 groups : normal control (NC), sham-ovariectomized (SO), ovariectomized (OR), ovariectomized and saponin treated (OS), and normal control treated with saponin (NS). Saponin was intraperitonally administered for 8 weeks. Ovariectomy was carried out at 1 st and 2nd weeks of experiment. Right-side ovary of rat was removed at 1st week, the otehr was done at 2nd week. The body weights fo ovariectomized rats showed no significant changes but that of NS group showed significant increase (p<0.05) compared with NC group. Ovariectomy of rats reduced the weights of femur by 6 to 8% compared with that of NC group. In addition, femur weight of NS group was 5 to 6% higher than that of NC. Uterus weight showed no significant differences by saponin treatment or ovariectomy. Serum testosterone level of ovariectomized rats increased by 60 times compared with that of NC. However, administration of crude saponin to ovariectomized rat attenuated testosterone level to almost that of NC. These results suggest that Korean red ginseng saponin attenuates physiological disorders induced by malfunction of ovary.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.19 no.5
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• pp.386-393
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• 2007

This paper studies the ventilation characteristics according to the jet fan location at the long road tunnel using the CFD software 'FLUENT' which is based on the finite volume method. The tunnel model used in the analysis has a length of 1600m, a cross sectional area of $120m^3$, and is composed of 3 lanes and one way. The velocity profile, the distribution of CO concentration and the ventilation flow rate within the tunnel are analyzed, respectively. In the analysis, it is found that the dependence of the ventilation flow rate upon the jet fan location is small, but the CO concentration in the tunnel is at the lowest when the jet fans are installed near the tunnel outlet. An air stream right below the jet fan is almost inactive due to the strong stream injection near the jet fan. Thus, the pollution level below the jet fan must be higher than the other area.

• Proceedings of the SAREK Conference
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• 2006.06a
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• pp.621-626
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• 2006

Regenerative evaporative cooling is known as an environment-friendly and energy efficient cooling method. A regenerative evaporative cooler (REC) consisting of dry and wet channels is able to cool down the air stream below the inlet wet-bulb temperature. In the regenerative evaporative cooler, the cooling effect is achieved by redirecting a portion of the air flown out of the dry channel into the wet channel and spraying water onto the redirected air. In this study, a horizontal regenerative cooler is considered. In the horizontal regenerative cooler, the flow direction of evaporating water has a right angle to the flow direction of supply air. This difference was investigated with visualization technique and simplified 2-module performance test was done in a thermo-environment chamber. Optimum design configuration is changed due to the wet channel which are easily fully covered with evaporating water and block the air flow inside the channel. Applying the optimized fin configuration design with the highly wetting surface treatment, a regenerative evaporative cooler was fabricated and tested to Identify the cooling performance improvement and operation characteristics. From the experimental results at the intake condition of $32^{\circ}C$ and 50% RH, the supply temperature was measured to be around $23.4^{\circ}C$. The cooling effectiveness based on the inlet dewpoint temperature was evaluated 73% which is almost close to the design expectation.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1976.06a
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• pp.89.1-89
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• 1976

The foreign bodies in the food passage and airway are very important in the Otolaryngological field, and practically there are many reports of them. Also the kinds of these foreign bodies are variable and almost all things around us are likely to be foreign bodies by momentary mistake. According to kinds and locations, clinicians often make mistakes in diagnosis with other physical examination except endoscopy, so foreign body was impacted for a long time and sometimes it may bring a grave outcome to the patient. The authors have recently experienced, in a 13-year-old boy, a pink-colored plastic pencil cap in the right main bronchus which was very similar to the color and shape of the bronchial lumen, and so we had some difficulty in removal of it. This is the report of clinical findings on this case along with literature review.

• Journal of Magnetics
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• v.5 no.1
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• pp.23-25
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• 2000

We have investigated the effects of Ar and$O_2$-ion milling on the exchange coupling field ($H_{ex}$) and coercive field ($H_c$) at the interfaces between substrates and NiO/NiFe films, to understand the exchange biasing mechanism. The $O_2$-ion milling was successfully performed by means of the electron cyclotron resonance (ECR) process. We found that the local roughness gradient of the NiO surface increased by $O_2$-ion milling. The ratio of $H_{ex}/H_c$ increased from 0.87 to 1.77, whereas $H_c$ decreased by almost a half as a results of the ion milling. The decrease in $H_c$could be interpreted as due to the refinement of magnetic domain size, which arose from the increase of the local roughness gradient of the NiO surface. The decrease in low $H_c$, and increase in $H_{ex}$ in NiO spin valves by ECR-ion milling are in the right direction far use in magnetoresistance (MR) heads.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.27 no.4
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• pp.243-250
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• 2014

Objective : The purpose of this report is to know the effect of oriental medical treatments on acute allergic contact dermatitis with multiple nummular eczema. Methods : We treated a 34-years-old woman patient with acute allergic contact dermatitis on face and multiple nummular eczema on both arm, right ankle and left inguinal region by Korean medicine. After Korean medical treatment for 42 days in hospital, we measured the decrease of exudation and pruritis as well as recovery of skin damages. We recorded pictures of changes on symptoms. Results & Conclusion : The symptoms of ACD and nummular eczema were significantly improved except scars. Exudation and pruritis were disappeared and skin damages were almost recovered until discharge from hospital. After 20 days we could confirm the symptoms were clearly disappeared. Thus Korean medical treatments are effective on ACD and nummular eczema.

• Journal of the Chungcheong Mathematical Society
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• v.24 no.2
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• pp.287-301
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• 2011

Let X and Y be vector spaces. It is shown that a mapping $f\;:\;X{\rightarrow}Y$ satisfies the functional equation $$(\ddag)\hspace{50}dk\;f\left(\frac{\sum_{j=1}^{dk}x_j}{dk}\right)=\displaystyle\sum_{j=1}^{dk}f(x_j)$$ if and only if the mapping $f$ : X ${\rightarrow}$ Y is Cauchy additive, and prove the Cauchy-Rassias stability of the functional equation ($\ddag$) in Banach modules over a unital $C^{\ast}$-algebra. Let $\mathcal{A}$ and $\mathcal{B}$ be unital $C^{\ast}$-algebras. As an application, we show that every almost homomorphism $h\;:\;\mathcal{A}{\rightarrow}\mathcal{B}$ of $\mathcal{A}$ into $\mathcal{B}$ is a homomorphism when $h((k-1)^nuy)=h((k-1)^nu)h(y)$ for all unitaries $u{\in}\mathcal{A}$, all $y{\in}\mathcal{A}$, and $n$ = 0,1,2,$\cdots$. Moreover, we prove the Cauchy-Rassias stability of homomorphisms in $C^{\ast}$-algebras.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.13 no.8
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• pp.3842-3861
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• 2019

In cut throat competition, organizations all over the world try to utilize the immense opportunities the Internet has to offer in almost all of their operations. Today, Social networking sites (SNSs) provide utilities designed to help companies to recruit right personnel. Considering the implication of social media for recruitment at infancy stage in Pakistan and lack of studies related to it, this study aims to investigate the role of different SNSs qualities (Easily navigate, Secure process, Eminence Proficiency, Candidate's Attraction and Network Expedition) in effective E-recruitment (EER). Data were collected through structured questionnaire from employees and managers of major telecom companies of Pakistan. Finally, the result of 355 returned and valid questionnaire with 55% response rate show that the relationship between SNSs qualities and EER is significant. Moreover, results also prove that EER is better than the tradition recruitment and a SNSs comparison show that Facebook is more effective than LinkedIn for EER. The results of this study will help Pakistani companies to develop a successful e-HRM and EER strategy in the current scenario.