• 한국심리학회지 : 문화 및 사회문제
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• 제28권4호
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• pp.627-659
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• 2022

본 연구에서는 초기 성인기 사람들의 과거 연애 관계에 대한 사고 정서가를 살펴보기 위해 Brenner와 Vogel(2015)이 개발한 PANERT(the Positive and Negative Ex-Relationship Thoughts Scale)를 번안하고 타당화하였다. 이를 위해 한국어로 번역한 PANERT를 전국의 20대 미혼 성인 남녀 337명을 대상으로 설문을 실시한 후, 주요 변인 간의 성차를 분석해 보았다. 이후, 문항 분석 결과에 따라 원문 12문항을 그대로 사용하여 한국판 PANERT를 구성하였다. 확인적 요인분석을 통해 긍정적 사고 정서가-부정적 사고 정서가의 2요인 모형(12문항)이 적합함을 검증하였고, 하위요인별 내적 합치도가 모두 높게 나타나 문항의 신뢰성이 확인되었다. 준거 관련 타당도 확인을 위해, 한국판 PANERT와 침습적 반추, 우울, 자기지각의 변화, 정적 및 부적 정서 반응과의 상관분석을 실시한 결과, 두 하위요인 모두 자기지각 변화를 제외한 모든 관련 구인과 상관관계를 보이는 것으로 나타났다. 마지막으로 두 요인이 정적 및 부적 정서 반응을 통해 우울에 어떤 역할을 미치는지 연구모형을 설정하여 매개효과를 살펴보았다. 이 과정에서 한국판 PANERT의 수렴타 당도와 변별타당도를 최종적으로 확인하였고, 구조모형의 간접효과 유의성을 확인하였다. 본 연구를 통해 한국판 PANERT는 총 12문항, 2개 하위요인으로 구성된 척도이며 초기 성인들의 이별 경험에 있어서 사고 정서가의 역할을 측정하는 도구로써 신뢰롭고 타당함을 확인하였다.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2008년도 춘계종합학술대회 A
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• pp.632-635
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• 2008

최근 들어 공장자동화분야에 동시공학이라는 개념이 활용되고 있다. 본 논문에서는 판재를 절단하여 철의장 부품을 생산하는 작업 현장이 회사 내 외의 협업이 요구되는 환경임에도 불구하고, 분산화 된 동시공학적 생산개념이 적용된 사례가 없어 이와 관련된 연구를 수행하였다. 클라이언트/서버 환경의 철의장 부재생산 자동화시스템을 설계하고, 부재 절단에 필요한 NC포스트프로세서 구축기를 설계하였다. 또한 부재생산 전 공정을 동시공학적 분산처리를 수행했을 때 기존의 생산공정에 비해 제품생산에 소요되는 시간이 단축됨을 보였다.

• Agricultural and Biosystems Engineering
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• 제3권1호
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• pp.44-54
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• 2002

A brief review of current status in the field of agricultural spray and future research challenges are presented. Researches on the pesticides sprays, pollen sprays, postharvest sprays, and biological control agent sprays among the various applications of agricultural spray were selected and reviewed. In the agrochemical sprays, the techniques to increase the deposition such as electrospray and reduce the drift such as introductions of drift retardants and of mechanical means are reviewed. The introduction of mechanical means includes low drift, air-assisted, air inclusion, shield or shroud assisted and pulse flow nozzles. For flat fan nozzles, the data of breakup length and thickness of liquid sheet are essential to understand the atomization processes and develop the transport model to target In the air-assisted spray technology to reduce drift, further works on the effect of application height on drift and air assistance on droplet size should be followed. In addition, methods for quantifying the included air in the air inclusion techniques are required. The atomization characteristics of biopesticides spray are not being elucidated and the formulations of biopesticides should be taken into account the spray characteristics of existing nozzle and sprayer. A few researches on the droplet size of fallout can be found in the literature. A combined technology with electrostatic method into one of method for the reduction of drift may be an effective strategy for increasing deposition and reducing drift. Only an integrated approach involving all stakeholders such as engineers, chemists, and biologists, etc. can result in improved application of agricultural spray.

• 대한간호학회지
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• 제44권6호
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• pp.639-648
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• 2014

Purpose: The purpose of this study was to identify life experiences of Korean patients with Hansen's disease (leprosy). Methods: For this study, 5 participants from Sorok Island Hospital were purposively chosen. Data were collected through in-depth individual interviews from June to July 2014. Data analysis method was based on Colaizzi's approach. Results: The study results showed that experiences of patients with Hansen's disease consisted of 14 themes and six theme clusters: 1) Bad disease approaching as fate; 2) Family breakup and far from the village; 3) New life in Sorok Island Hospital; 4) Treatment of Hansen's disease and disability; 5) Life in the disease community; 6) Comfort and hope of life. Conclusion: The findings of this study indicate that health care professionals should pay attention to patients with Hansen's disease not only to reduce their physical and psychological suffering, but also to help the community and public culture to reduce the social stigma surrounding this disease and causing suffering for the patients. The results of the present study can help us to have a better understanding of various aspects of patients' lived experiences.

• 대한기계학회논문집B
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• 제24권2호
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• pp.214-223
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• 2000

In this research, a study on the characteristics of the liquid sheet formed by two impinging jets is presented. Using the interference phenomena of light, the thickness of the liquid sheet, which seems to heavily affect the size of the droplets, is measured and compared with existing theoretical modelings. Thinner liquid sheet is produced with larger impinging angle, smaller orifice diameter, and higher azimuthal angle but the jet velocity doesn't affect the thickness. More viscous liquid produces thicker liquid sheet. The theoretical modelings predict the same trend as the experiments but the thickness values are overestimated at low azimuthal angles. This difference is gradually decreased as the azimuthal angle is increased: The breakup mechanism of the droplets from the liquid sheet is visualized by a high speed camera. The crest around the edge of the liquid sheet is protruded with the accumulation of liquid at the end of protuberance, which contracts into a spherical shape and then becomes detached when the stem breaks down, producing large droplets with a few small size of satellites.

• 대한기계학회논문집B
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• 제24권2호
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• pp.306-315
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• 2000

An experimental study was conducted to examine the internal flow patterns inside the mixing chamber of effervescent atomizers. The mixing chamber has the rectangular cross section ($8mm{\times}2mm$) and made of transparent acrylic plate for flow visualization. The parameters tested were the air/liquid ratio (ALR), injection. pressure, and the nozzle orifice diameter. Three different flow regimes were observed; bubbly, annular, and intermittent flows. In the bubbly flow regime, the discharged mixture was disintegrated into drops through the bubble expansion and the ligament breakup. On the other hand, in the annular flow regime, the liquid annulus was disintegrated into small drops by the aerodynamic interaction between the phases due to the high relative velocities between the gas and the liquid. In the intermittent flow regime, the bubble-expansion/ligament-disintegration mode and the annulus-disintegration mode appeared alternatively. The correlations representing the transition criteria between the two-phase flow patterns within the mixing chamber were proposed based on the drift-flux models.

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2009년 추계학술대회논문집
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• pp.88-92
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• 2009

When exposed to uniform magnetic fields externally applied, paramagnetic particles acquire dipole moments and the induced moments interacting with each other lead to the formation of chainlike structures or clusters of particles aligned with the field direction. A direct simulation method, based on the Maxwell stress tensor and a fictitious domain method, is applied to solve flows with magnetic chains in simple shear flow. We assumed that the particles constituting the chains are paramagnetic, and inertia of both flow and magnetic particles is negligible. The numerical scheme enables us to take into account both hydrodynamic and magnetic interactions between particles in a fully coupled manner, enabling us to numerically visualize breakup and reformation of the chains by the combined effect of the external field and the shear flow. Simple shear flow with suspended magnetic chains is solved in a periodic domain for a given magnetic field. Dynamics of interacting magnetic chains is found to be significantly affected by a dimensionless parameter called the Mason number, the ratio of the viscous force to the magnetic force in the shear flow. The effect of particle area fraction on the chain dynamics is investigated as well.

• 한국분무공학회지
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• 제10권1호
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• pp.43-52
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• 2005

The effect of fuel injection spray on engine performance has been known as one of the major concerns for improving fuel economy and reducing emissions. In general, reducing the spray droplet size could prevent HC emission in gasoline engine. As far as PFI (Port Fuel Injection) gasoline engine is concerned, the mixture of air and fuel may not be uniform under a certain condition, because breakup and production of spray droplets are made in a short distance between the fuel injector and intake valve. This study, by constituting PFI gasoline spray system, was performed to study the transient spray characteristics and dynamic behavior of droplets from 2hole 2spray type injector used in DOHC gasoline engine. Mean droplet size and optical concentration in accordance with various conditions were measured by LDPA and CCD camera. Through this study, the variation of drop size and optical concentration could be used for understanding the behavior of unsteady spray was declared and the existing the small droplets between each pulse spray could be estimated caused to the development of wall film was conformed.

• 한국분무공학회지
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• 제1권1호
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• pp.63-75
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• 1996

The purpose of this study is to investigate the break-up characteristics by taking advantage of a two-phase coaxial nozzle. Air and water are utilized as working fluids and the mass ratio air/water has been controlled to characterize the atomization, diffusion and development of mixing process. By way of a photographic technique, conventional developing structures and diffusion angles have been analyzed systematically with variations of mass ratios. The turbulent flow components of the atomized particles were measured by a two channel LDV system and the data were treated by an on-lined measurement equipment. According to the photographic results the spreading angles decreased because the axial inertia moment was relatively higher than the lateral one with respect to the increase of mass ratio. It is found the jet flow diffuses linearly in a certain limit region while the atomizing characteristics, in terms of the distributions of particle diameters did not show particular differences. It may be expected that these fundamental results can be used as reference data in studying the atomization, breakup and diffusions.

• 가정과삶의질연구
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• 제15권1호
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• pp.1-12
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• 1997

This study is about understanding the single elderly's view on remarriage and finding factors that affect the remarriage which should provide basic data for the future research on the single elderly's view on remarriage. 251 single elderly men and women (divorced or widowed) were asked to answer the survey questionnaire which also involved individual interviews. A brief summary of the results of this study is as following. The elderly's view on remarriage significantly varies according to the factors like sex age and the number of children of the elderly cause of being single degree of loneliness need for remarriage degree of satisfaction out previous marriage prior remarriage experience. The degree of satisfaction out of previous marriage is high when they maintain cordial relationship with their children and the cause of breakup of marriage is death and the degree of loneliness is high and the period of the previous marriage is long while the period of being single afterward is short. Women's expectation level of remarriage is significantly different in most variables. But that of men's is not different significantly different in most variables. But that of men's is not different significantly in most variables. The satisfaction of the first marriage and the expectation level of remarriage are in positive correlation.