• 한국기계가공학회지
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• 제20권6호
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• pp.108-113
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• 2021

Recently, a new concept of a one-touch descending lifeline has been proposed to address the drawbacks of the conventional descending lifeline, which can be easily installed and quickly evacuated in the case of a fire emergency. All separate parts for escape are initially mounted in a box, and the link-type support is spread out of the window by pushing the handle attached to the box. In this study, the proposed double square linkage mechanism was redesigned, and its safety is verified by determining an appropriate moment of inertia of the link through finite element analysis using Abaqus. The shape and assembling method of the reel and speed controller were also modified such that the safety belt was simultaneously unfolded with link-type support. Finally, the feasibility of the proposed one-touch all-in-one descending lifeline was confirmed through fabrication.

• Journal of Korean Neurosurgical Society
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• 제55권6호
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• pp.348-352
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• 2014

Objective : Management guidelines for single intracranial hematomas have been established, but the optimal management of multiple hematomas has little known. We present bilateral traumatic supratentorial hematomas that each has enough volume to be evacuated and discuss how to operate effectively it in a single anesthesia. Methods : In total, 203 patients underwent evacuation and/or decompressive craniectomies for acute intracranial hematomas over 5 years. Among them, only eight cases (3.9%) underwent operations for bilateral intracranial hematomas in a single session. Injury mechanism, initial Glasgow Coma Scale score, types of intracranial lesions, surgical methods, and Glasgow outcome scale were evaluated. Results : The most common injury mechanism was a fall (four cases). The types of intracranial lesions were epidural hematoma (EDH)/intracerebral hematoma (ICH) in five, EDH/EDH in one, EDH/subdural hematoma (SDH) in one, and ICH/SDH in one. All cases except one had an EDH. The EDH was addressed first in all cases. Then, the evacuation of the ICH was performed through a small craniotomy or burr hole. All patients except one survived. Conclusion : Bilateral intracranial hematomas that should be removed in a single-session operation are rare. Epidural hematomas almost always occur in these cases and should be removed first to prevent the hematoma from growing during the surgery. Then, the other hematoma, contralateral to the EDH, can be evacuated with a small craniotomy.

• 대한화학회지
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• 제56권3호
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• pp.341-347
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• 2012

A series of 2-(4-chlorophenylimino)-5-((3-(p-substituted phenyl)-1-phenyl-1H-pyrazol-4-yl) methylene) thiazolidin-4-one ($\mathbf{3a-h}$) compounds were prepared from the 2-(4-chlorophenylimino) thiazolidin-4-one ($\mathbf{1}$) and 1-phenyl-3-(p-substituted phenyl)-1H-pyrazole-4-carbaldehyde ($\mathbf{2a-h}$). All compounds were characterized by elemental (C, H, N) analysis and spectral (FT-IR, $^1H$ NMR and GC-MS) analysis. These newly synthesized compounds were screened for their antibacterial and antifungal activities. Antimicrobial activity was observed and evaluated against the bacterial strains like Eschericha coli (MTCC 443), Pseudomonas aeruginosa (MTCC 1688), Staphylococcus aureus (MTCC 96), Streptococcus pyogenes (MTCC 442) and against the fungal strains like Candida albicans (MTCC 227), Aspergillus niger (MTCC 282) and Aspergillus clavatus (MTCC 1323). All the synthesized compounds were found to possess moderate to excellent antimicrobial activity against above selected strains.

• Journal of Chest Surgery
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• 제27권8호
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• pp.677-682
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• 1994

A bronchopleural ~stula[BPF] is a major therapeutic challange to the thoracic surgeons due to difficulties in its management. We have experienced 9 cases of postpneumonectomy BPF, and all of them occured after the right side pneumonectomy. Seven patients underwent pneumonectomy due to lung cancer, and one patient each received pneumonectomy due to bronchiectasis and pulmonary tuberculosis. The most frequently used method of treatment was Eloesser operation which was done in 7 patients, and one had open thoracostomy and one had betadine irrigation until he died suddenly due to pulmonary vein rupture. The result of treatment was poor with five mortalities including one operative death. Two patients are in good condition in 28 months and 4 years of follow-up, but two are lost in follow-up. Tissue sealant such as Tisseel was used in three patients but seems to have no effect at all in the treatment of postoperative BPF.

• 생명과학회지
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• 제10권4호
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• pp.317-325
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• 2000

A six parent dialled analysis was conducted to get basic information for improving yield of upland cotton. Heterosis, combining ability, genetic components and correlation coefficients for boll length, boll width, boll weight, 100 seed weight, lint weigth per boll and lint percentage were studied. Estimates of heterosis for all characters and heterobeltiosis for boll weight and lint weight per boll showed positive values. In general combining ability effect, 'Muan' and 'Imsung' showed highely positive effect in all characters. In specific combining ability effect, the combinations of 'Seungju${\times}$Imsung$.$Seosan${\times}$Imsung' for bll length, 'Cheju${\times}$Imsung$.$Seung${\times}$Imsung' for boll width, 'Cheju${\times}$Muan$.$Cheju${\times}$Imsung' for boll weight, 'Cheju${\times}$Soonchun$.$Muan${\times}$Imsung' for 100 seed weight, 'Soonchun${\times}$Muan' for lint weight per boll and 'Soonchun${\times}$Seosan$.$Seungju${\times}$Muan' for lint percentage showed highly positive effect. Partial dominance was observed for boll length, boll weight, 100 seed weight and lint weight per boll, complete dominance for boll width and overdominance for lint percentage. The number of effective gene group was estimated as one for all characters. The estimates of narrow and broad sense heritabilities were high for all characters except as one for all characters. The estimates of narrow and broad sense heritabilities were high for all characters except lint percentage. Correlation coefficients among the boll length, boll width, boll weight, 100 seed weight and lint weight per boll were positive, whereas lint percentage was negatively correlated with other characters.

• Journal of Chest Surgery
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• 제27권5호
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• pp.374-378
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• 1994

Bronchoplastic and angioplastic operation in lung surgery is appropriate treatment for a wide range of benign endobronchial lesions and low grade malignancies. Between March 1990 to February 1994, four patients underwent bronchial sleeve resection and one patient received left upper lobe lobectomy with pulmonary artery angioplasty. Types of disease includes two cases of endobronchial tuberculosis and three cases of lung cancer. The main operation performed are one pneumonectomy, two right upper lobectomy and one each of left upper lobectomy and left lower lobectomy. All cases received sleeve resection not due to decreased respiratory reserve but due to anatomic suitability. One patient who received pneumonectomy had postoperative complication of empyema thoracis.

• 한국게임학회 논문지
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• 제12권1호
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• pp.15-24
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• 2012

기능성게임은 목적성 게임이므로 플레이를 통해 원하는 목적을 달성하도록 개발되고 사용자 또한 플레이 목적을 달성하기 원한다. 성취도 평가 기능은 기능성게임의 품질에 중요한 영역이다. 본 연구에서는 기능성게임의 성취도 평가 유형을 일체형, 복합형, 분리형의 3가지 유형으로 정의하였다. 이에 따라 기능성게임들이 어떤 형태의 성취도 평가 유형을 사용하는지 분석하였다. 그 결과 게임성을 높이 활용한 것들은 대개 일체형을, 기능성게임의 목적에 충실하고자 한 것들은 분리형과 복합형을 더 사용한 것으로 나타났다. 또한 선호하는 성취도 평가 기능의 조사에서 사용자들은 전반적으로 일체형을 선호하는 것으로 나타났다. 본 연구는 플레이 목적 달성과 사용자에게 더 높은 만족감을 줄 수 있는 성취도 평가 기능 설계에 참고 자료가 될 것으로 기대한다.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2008년도 추계학술대회논문집
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• pp.545-560
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• 2008

O Source import ㅁDirect import form Nastran, ANSYS ㅁDirect import of all the RPM from the files containing the structural results O Solver ㅁDirect computation of all RPM (multiple load case): one matrix resolution with multiple RHS ㅁEfficient solvers (MUMPS, SPARSE, Iterative) ㅁFrequency parallelisms available for very large problems O In practice ㅁSmall problems run on a desktop ㅁLarge problems can exceed 3kHz on a car engine O Easy to mesh ㅁ3D model created in a few minutes thanks to the unequal meshes. O And all Actran standard features

• Journal of Chest Surgery
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• 제13권4호
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• pp.435-441
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• 1980

Ebstein`s anomaly had been amenable to reparative surgery since 1962. However, neither the role of surgery in Ebstein`s anomaly nor the surgical procedure of choice for its correction are clearly defined. Whether or not the atrialized right ventricle, which plays a major role in the functional abnormalities, should be obliterated in all cases remains unsolved. Four cases of Ebstein`s anomaly treated surgically at Seoul National University Hospital were reported. All had closure of the atrial septal defect, obliteration of the atrialized right ventricle by plication, and insertion of a tricuspid bioprosthesis and an epicardial ventricular pacemaker. One patient had a pulmonic valvotomy due to stenotic bicuspid pulmonic valve also. All but one had discharged with a good result.

• ETRI Journal
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• 제31권3호
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• pp.327-329
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• 2009

In a network, broadcasting is the dissemination of a message from a source node holding a message to all the remaining nodes through a call. This letter proposes a one-to-all broadcasting algorithm in the Petersen-torus network PT(n, n) for the single-link-available and multiple-link-available models. A PT(n, n) is a regular network whose degree is 4 and number of nodes is $10n^2$, where the Petersen graph is set as a basic module, and the basic module is connected in the form of a torus. A broadcasting algorithm is developed using a divide-and-conquer technique, and the time complexity of the proposed algorithm approximates n+4, the diameter of PT(n, n), which is the lower bound of the time complexity of broadcasting.