• Journal of Chest Surgery
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• v.48 no.4
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• pp.281-284
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• 2015

We present the case of a 38-year-old woman admitted to our outpatient clinic with accelerating back pain and fatigue following a kick to her back by her husband. Upon arrival, we detected ST segment elevation in the D1, aVL, and V2 leads and accelerated idioventricular rhythm. She had pallor and hypotension consistent with cardiogenic shock. We immediately performed coronary angiography and found a long dissection starting from the mid-left main coronary artery and progressing into the mid-left anterior descending (LAD) and circumflex arteries. She was then transferred to the operating room for surgery. A saphenous vein was grafted to the distal LAD. Since the patient was hypotensive under noradrenaline and dopamine infusions, she was transferred to the cardiovascular surgery intensive care unit on an extracorporeal membrane oxygenator and intra-aortic balloon pump. During follow-up, her blood pressure remained low, at approximately 60/40 mmHg, despite aggressive inotropic and mechanical support. On the second postoperative day, asystole and cardiovascular arrest quickly developed, and despite aggressive cardiopulmonary resuscitation, she died.

• Journal of Information Processing Systems
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• v.11 no.3
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• pp.465-482
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• 2015

IEEE 802.11p is a standard MAC protocol for wireless access in vehicular environments (WAVEs). If a packet collision happens when a safety message is sent out, IEEE 802.11p chooses a random back-off counter value in a fixed-size contention window. However, depending on the random choice of back-off counter value, it is still possible that less important messages are sent out first while more important messages are delayed longer until sent out. In this paper, we present a new scheme for safety message scheduling, called the enhanced message priority mechanism (EMPM). It consists of the following two components: the benefit-value algorithm, which calculates the priority of the messages depending on the speed, deceleration, and message lifetime; and the back-off counter selection algorithm, which chooses the non-uniform back-off counter value in order to reduce the collision probability and to enhance the throughput of the highly beneficial messages. Numerical results show that the EMPM can significantly improve the throughput and delay of messages with high benefits when compared with existing MAC protocols. Consequently, the EMPM can provide better QoS support for the more important and urgent messages.

• Journal of Acupuncture Research
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• v.36 no.3
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• pp.182-185
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• 2019

Dural ectasia is defined as ballooning or expansion of the dural sac surrounding the spinal cord. This report describes a rare case of low back pain and sciatica, suspected as being dural ectasia. The patient was hospitalized for 45 days, and underwent integrative Korean medical treatment, including pharmacopuncture, acupuncture, herbal medicine, Chuna therapy, cupping therapy, and physiotherapy. The effect of the treatment was evaluated using the numerical rating scale, Oswestry disability index, European quality of life 5 dimensions, and subjective symptoms. After inpatient treatment, the pain the patient experienced was significantly reduced and the evaluation indices improved. This case report suggested that integrative Korean medical treatment could be an effective therapeutic choice for low back pain and sciatica, with dural ectasia. Further clinical studies are needed to support this observation.

• 한국ITS학회:학술대회논문집
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• v.2006 no.10
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• pp.108-112
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• 2006

• Proceedings of the KWS Conference
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• 2004.05a
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• pp.237-239
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• 2004

This paper presents the analysis results of deformation induced by welding of stiffeners which will be attached for structural reinforcements of deck pillar support in LNG carrier. (omitted)

• Journal of Korean Academic Society of Home Health Care Nursing
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• v.23 no.2
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• pp.129-138
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• 2016

Purpose: The purpose of this study was to examine the relationships between resilience, family support, and hopelessness, as well as to identify the effects of resilience and family support on the hopelessness of elderly inpatients in general hospitals. Methods: A total of 177 elderly persons were recruited from three general hospitals. Data were analyzed using descriptive statistics, t-tests, ANOVA, Pearson;s correlation coefficient, and multiple regression analysis. Results: The score on the hopelessness of hospitalized elderly persons was $2.88{\pm}0.88$ (range: 1-5). Multiple regression analysis results showed that participants; hopelessness was significantly influenced by resilience and family support, explaining 35.4% of the total variance. Conclusion: Based on the findings of this study, there is a need for the development of a resilience and family support program, aimed at reducing hopelessness among elderly persons, in order to promote their mental health.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.18 no.1
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• pp.49-57
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• 2008

In this paper, we propose a novel hierarchical distributed intrusion detection system, named HNHDIDS(Home Network Hierarchical Distributed Intrusion Detection System), which is not only based on the structure of distributed intrusion detection system, but also fully consider the environment of secure home networks service. The proposed system is hierarchically composed of the one-class support vector machine(support vector data description) and local agents, in which it is designed for optimizing for the environment of secure home networks service. We support our findings with computer experiments and analysis.

• Steel and Composite Structures
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• v.3 no.4
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• pp.261-275
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• 2003

Truss members built-up with double angles back-to-back have monosymmetric cross-section and twisting always accompanies flexion upon the onset of buckling about the axis of symmetry. Approximate formulae for calculating the buckling capacity are presented in this paper for routine design purpose. For a member susceptible only to flexural buckling, its optimal cross-section should consist of slender plate elements so as to get larger radius of gyration. But, occurrence of twisting changes the situation owing to the weakness of thin plates in resisting torsion. Criteria for limiting the leg slenderness are discussed herein. Truss web members in compression are usually considered as hinged at both ends for out-of-plane buckling. In case one (or both) end of member is not supported laterally by bracing member, its adjoining members have to provide an elastic support of adequate stiffness in order not to underdesign the member. The stiffness provided by either compression or tension chords in different cases is analyzed, and the effect of initial crookedness of compression chord is taken into account. Formulae are presented to compute the required stiffness of chord member and to determine the effective length factor for inadequately constrained compressive diagonals.

• Journal of Families and Better Life
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• v.28 no.1
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• pp.87-98
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• 2010

The purpose of the present study was to examine the desire of married women to be re-employed and the factors related to this desire. The study gathered information from 240 women who gave up their jobs and careers after marriage. Information included their career history, current psycho-social condition, and family situation. Multiple regression and covariation structure analyses indicated that the desire of married women to go back to paid work was influenced by family economic condition, psycho-social condition, and child care situation. Specifically, the study found that family's monthly income and the age of the last child were negatively related to the women's desire for re-employment. On the other hand, economic pressure and achievement motivation were positively related to the women's desire. Finally, the study found that socio-economic background and external social support were not significantly related to the women’s wish to go back to the workforce.

• Transactions of the Korean Society of Automotive Engineers
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• v.16 no.6
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• pp.39-47
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• 2008

In this research, a web-based design support system is constructed for the design process of automotive steel pulley to gather engineering knowledge from pulley design data. In the design search module, a clustering tool for design data is proposed using K-means clustering algorithm. To obtain correlational patterns between design and FEA (Finite Element Analysis) data, a Multi-layer Back Propagation Network (MBPN) is applied. With the analyzed patterns from a number of simulation data, an estimation of minimum von mises can be provided for given design parameters of pulleys. The case study revealed fast estimation of minimum stress in the pulley within 12% error.