• 한국콘텐츠학회논문지
• /
• 제21권1호
• /
• pp.511-519
• /
• 2021

본 연구는 고령사회에 접어든 우리나라의 인구구조를 제고 하여, 중장년층의 저소득층들이 느끼는 삶에 대한 인식을 고찰하였다. 분석을 위하여, 보건복지부에서 제공하는 2019년 복지패널자료를 토대로 필요로 하는 변수를 선정하였고, 총 14,918명의 패널표본으로부터 '저소득층'의 '60대-70대' 중에서, 무응답 및 불성실한 표본을 제거하여, 최종 1,684명의 표본을 선정하였다. 특히, 본 연구에서는 종속변수로써, 패널자료에서 측정한 '삶의 사다리'로 정의하였다. 이에, '삶의 사다리'에 미치는 개인적 특성 및 생활만족도의 영향요인을 분석하였다. 분석결과, 종속변수인 「삶의 사다리」 변수에 대한 영향요인으로, 개인적 특성만을 고려하였을 경우에는, 대부분의 개인적 특성이 「삶의 사다리」의 영향요인으로 나타났다. 또한, 경제상태변수에 대한 상호작용 효과를 살펴본 결과, 유의미한 상호작용 효과를 나타내지 않았다. 이는 중년노인들의 삶의 사다리에 미치는 영향요인은 경제상태보다는 건강상태가 유의미한 영향요인임을 반증해주고 있다. 따라서, 노인의 '삶의 사다리'에 대한 인식은 노인 개인적인 여건과 환경보다는 노인의 내적 및 외적인 다양한 '환경요인'이 노인의 삶에 대한 인식에 영향을 미침을 제고 해야 한다. 즉, 그들의 삶에 대한 인식에 긍정적인 대안을 제시할 수 있는 방안이 필요할 것이다.

• The Korean Journal of Pain
• /
• 제7권1호
• /
• pp.1-12
• /
• 1994

• 한국CDE학회논문집
• /
• 제14권1호
• /
• pp.50-59
• /
• 2009

There are two main problems in the current PLC ladder programming practices: First, currently there are no widely adopted systematic design methods to deal with PLC based control systems in the shop floor. So, the control logic design phase is usually omitted in current PLC programming development life cycle. Second, PLC ladder logic provides only microscopic view of system processes. As a result, it is difficult for FA engineers to have overall perspectives about the interaction of system components intuitively during the verification step of logic errors. To solve these problems, this paper proposed object-oriented design and automatic generation method of PLC ladder logic. Based on the proposed method, the computer software to assist the automatic ladder logic generation is also developed.

• Communications for Statistical Applications and Methods
• /
• 제24권3호
• /
• pp.211-226
• /
• 2017

The chain-ladder method, for which run-off data is employed is popularly used in the rate-adjustment and loss-reserving practices of non-life-insurance and health-insurance companies. The method is applicable when the underlying assumption of a consistent development pattern is in regards to a cumulative loss payment after the occurrence of an insurance event. In this study, a modified chain-ladder algorithm is proposed for when the assumption is considered to be only partially appropriate for the given run-off data. The concept of a structural-change point in the run-off data and its reflection in the estimation of unpaid loss amounts are discussed with numerical illustrations. Experience data from private health insurance coverage in Korea were analyzed based on the suggested method. The performance in estimation of loss reserve was also compared with traditional approaches. We present evidence in this paper that shows that a reflection of a structural-change point in the chain-ladder method can improve the risk management of the relevant insurance products. The suggested method is expected to be utilized easily in actuarial practice as the algorithm is straightforward.

• 한국산학기술학회논문지
• /
• 제11권12호
• /
• pp.5120-5126
• /
• 2010

ABLB(양측 귀 교대 평형) 검사는 누가현상에 기초한 감각신경성 난청의 세부 병변을 감별하기 위한 검사중 하나이다. 본 논문은 자동 ABLB 검사 소프트웨어를 기술한다. 이 소프트웨어는 ABLB 검사 주파수 및 검사 시작음을 자동으로 결정한다. 또한 검사 음에 대한 피검자의 반응을 분석하여 다음 검사를 결정하는 알고리즘을 지원한다. 또, 피검자의 ABLB 검사 제어 및 모니터링을 위한 인터페이스를 제공하고 검사 결과를 Ladder Diagram으로 나타낸다. 디지털 오실로스코프를 이용하여 ABLB 검사 음이 정확하게 출력되는지 확인하였다.

• 수산해양교육연구
• /
• 제29권1호
• /
• pp.137-147
• /
• 2017

An accident during pilotage may cause several problems such as crippling the harbour function, environmental disruption, loss of life. Since the pilot plays an important role in the safe operation of the port, securing their safety is directly connected to the vessel's safety coming into port in Korea. Pilotage service is offered on request without distinction of day and night. And traveling by helicopter and boarding/disembarking using a pilot ladder from and to a pilot boat have a high risk of falling into the sea. So, pilots can fall into the sea while boarding/disembarking from ship which can lead to serious injury by cardiac arrest. A number of pilots have died or severely injured due to fall from the pilot ladder during embarkation and disembarkation up to now. Current safety measures at embarkation and disembarkation required by pilotage act and IMO resolutions could not prevent all the pilot related accidents. Therefore, to prevent pilot accident during boarding/disembarking from ship, it is necessary to include safety training requirement for new pilots under the requirements for licensing of pilotage act. It is also necessary to compel pilots to take necessary personal protective equipment when they use a pilot ladder. In addition, the placement of emergency kit on pilot boats and first-aid training are required in order to deal with emergency situation promptly.

• 동서간호학연구지
• /
• 제9권1호
• /
• pp.35-45
• /
• 2004

This study as a cross survey study was conducted to provide basic data for more practical approach to nursing the aged, by analyzing the relationship of the loneliness, self-esteem and quality of life on the hearing disturbance aged. This study was based on the survey data from the 90 aged, who are over sity years old and resident in Seoul. In order to measure the general characteristics and subjective audition, Cantril's Ladder Scale Tool was used. For the loneliness, UCLA Loneliness Scale Tool (translated into Korean to suit the Korean environment by Kim's). In order to measure the self-esteem, Rosenberg's Self-esteem Measurement Tool (translated into Korean by Chun) was used. No's Quality of Life Measurement Tool was used to the measure the quality of life. The Data were collected by direct interviewing on the subjects for this study from August 10, 1999 to September 15, 1999. In accordance with each purpose of this study, appropriate analyzing methods such as Descriptive Statistics, T-test, and ANOVA were used in analyzing the collected data. Pearson correlation coefficient was used to test the relationship of the loneliness, self-esteem and quality of life on the hearing disturbance aged. The result of this study is as follows: 1) The average of the degrees of subjective audition was 7.22, The factors that cause the result were sex, religion, the perception of health, the married state. 2) The average of the degrees of loneliness was 55.18, The factor that cause the result was the perception of health. 3) The average of the degrees of self-esteem was 28.42, The factors that cause the result were the number of family, the number of children, the perception of health. 4) The average of the degrees of quality of life was 71.87 the factors that cause the result were age, education, the number of children, the perception of health. 5) Correlation of Loneliness, self-esteem and quality of life is the perception of loneliness showed significant negative correlation with self-esteem (r=-.466, p=.0001) and quality of life (r=-.450, p=.0001). As a result of analysis above: Because of the recognition change of the aged, it seems to them that the subjective audition scale on the hearing disturbance aged is measured by only 10-point ladder scale is inappropriate. Therefore, it is necessary that the physiologic-index can confirm more exactly should be applied to them. It is very important that the social-psychological factor that has influence on the aged should be the self-perception of health. Thus, proper development of nursing intervention should be required to process in the self-perception of health on the aged.

• 한국화재소방학회논문지
• /
• 제29권3호
• /
• pp.59-64
• /
• 2015

본 연구는 전국에서 사용되고 있는 4종류(고가사다리차, 굴절사다리차, 펌프차, 화학차)의 소방자동차 1,022대를 대상으로 고장 발생 원인을 추적 조사한 결과에 관한 것으로, 고가사다리차는 추락방지장치부문(46%), 굴절사다리차는 유압유 오염도부문(29%), 펌프차는 에어공급장치 실린더부문(37%), 화학차는 분말소화장치부문(39%)에서 고장이 많이 발생하는 것으로 나타났다. 그 원인은 차량 노후화에 따른 경년변화로 인한 고장이 가장 많이 나타났으며, 에어공급장치 실린더와 같이 특장부품의 반복사용에 따른 피로가 원인으로 나타났다. 고가사다리차의 경우 와이어의 롤러사이의 끼임 현상이 고장으로 나타나 제조과정에서 개선할 점으로 조사되었다. 따라서 5년 이상 경과한 차종에 대해서는 소방장비관리 규칙(총리령)에서 정하는 정밀점검을 통하여 세심한 관리가 필요하며 차종에 따라 내용연수가 경과한 10년 또는 12 이상 도래된 차량에 대해서는 안전을 위하여 연장 사용보다는 신규로 교체하여 최상의 소방차량 상태를 유지하도록 관리되어야 할 것으로 나타났다.

• BMB Reports
• /
• 제41권4호
• /
• pp.294-299
• /
• 2008

Elevated expression of SMYD3 is a frequent genetic abnormality in several malignancies. Few studies knocking down SMYD3 expression in cervical carcinoma cells have been performed to date. In this paper, we established an inducible short hairpin RNA expression system to examine its role in maintaining the malignant phenotype of HeLa cells. After being induced by doxycycline, SMYD3 mRNA and protein expression were both reduced, and significant reductions in cell proliferation, colony formation and migration/invasion activity were observed in the SMYD3-silenced HeLa cells. The percentage of cells in sub-G1 was elevated and DNA ladder formation could be detected, indicating potent induction of apoptosis by SMYD3 knockdown. These findings imply that SMYD3 plays crucial roles in HeLa cell proliferation and migration/invasion, and that it may be a useful therapeutic target in human cervical carcinomas.

• Toxicological Research
• /
• 제25권3호
• /
• pp.113-118
• /
• 2009

Cell death induced by menadione (vitamin K-3,2-methyl-1,4-naphthoquinone) has been investigated in human promyelocytic leukemia HL-60 cells. Menadione was found to induce both apoptosis and necrosis in HL-60 cells. Low concentration ($1{\sim}$50 ${\mu}$M) of menadione induced apoptotic cell death, which was demonstrated by typical DNA ladder patterns on agarose gel electrophoresis and flow cytometry analysis. In contrast, a high concentration of menadione (100 ${\mu}$M) induced necrotic cell death, which was demonstrated by DNA smear pattern in agarose gel electrophoresis. Necrotic cell death was accompanied with a great reduction of cell viability. Menadione activated caspase-3, as evidenced by both increased protease activity and proteolytic cleavage of 116 kDa poly(ADP-ribose) polymerase (PARP) into 85 kDa cleavage product. Caspase-3 activity was maximum at 50 ${\mu}$M of menadione, and very low at 100 ${\mu}$M of menadione. Taken together, our results showed that menadione induced mixed types of cell death, apoptosis at low concentrations and necrosis at high concentrations in HL-60 cells.