• The Journal of the Convergence on Culture Technology
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• v.8 no.6
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• pp.243-250
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• 2022

This study attempted to explore the essential meaning of emotional experiences of bereavement of with the mother, the main caregiver of adult women. For this purpose, three adult women who had experienced bereavement with their mother were subjected to an in-depth interview method about their life experiences and their meanings. The collected data were analyzed by applying Colaizzi Phenomenological research method. As a method of deriving the research results, four categories of "Bereavement Experience," "Emotional Experience," "Relationship Experience," "Growth Experience," were derived by conducting a study on the essence of the emotional experience experienced by an adult women who loss her mother and the effect on the life of herself and her family became. This study is meaningful in that it contributed to recovery and growth by healing with positive life changes according to the passage of time and the will to overcome despite the trauma of suffering and loss due to the death of the mother, the attachment target.

• The Journal of the Korea Contents Association
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• v.14 no.2
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• pp.364-375
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• 2014

The aim of this study was to exploring the experiences of life amomg alcoholics who suicide attempts. The main question of this study is "what the meaning and essence of experiences of life amomg alcoholics with suicide attempts?" The qualitative research method was taken for widely understanding and lively writing experiences of life amomg alcoholics who suicide attempts in the connection of eheir lives. As results, 12 categories appeared from 5 themes as data analysis. The major themes could be analyzed as "Continuing a dark confines of the psychology, emotion", "encounter with worthless oneself of the loath to admit", "The trigger inciting to suicide", "The roots of the drinking and suicide -living with fate", "Holding up a string of life". Based on these results, the practical implications for the alcoholics with suicide attempts had been discussed.

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2009.10a
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• pp.190-193
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• 2009

A recently reported simple phenomenological constitutive model (SK) demonstrated comparable or better data description capability to/than one of the rigorous and physics-based models, the PTW model. The simple SK model is believed to be an efficient model for practical applications where an extensive computation is needed, and can serve as a rigorous comparison standard for the development of a physics-based model.

• Journal of Biosystems Engineering
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• v.24 no.6
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• pp.547-552
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• 1999

원예 생산물은 수확한 후에도 호흡 등의 생명현상을 지속한다. 즉, 원예 생산물의 수확 후 생명현상의 유지를 위한 주된 생리 및 생화학적 변화는 호흡의 증가, 에틸렌 합성 및 작용, 세포벽 붕괴에 의한 조직의 연화, 색소의 파괴 및 합성, 당과 유기산의 함량 변화, 방향물질의 생산 등이 있다. 이와 같이 수확된 원예 생산물은 영양분의 공급이 중단되어 자체내의 저장 양분을 기질로 소모함으로써 품질의 변화를 가져온다. 또한, 원예 생산물은 수확 시기에 에틸렌이 많이 발생하여 숙성과 노화가 촉진된다.(중략)

• Korean Journal of Microbiology
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• v.33 no.1
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• pp.72-77
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• 1997

이 글에서는 작은 저수지인 천호지를 대상으로 부영양화의 진행과 원인 그리고 이에 따른 미생물생태학적인 변화를 살펴보았으며 끝으로 호수를 회복시키는 부영양화의 대책에 대하여 간단히 기술하였다. 천호지는 충청남도 천안시 단국대학교 천안 캠퍼스 앞에 위치한 0.31km$^{2}$의 작은 관개용 저수지로 1995년 평균 엽록소 a의 농도가 75.$\mu$g/l에 달하는 등 부영양화 현상이 매우 심하게 나타났고 있다(1). 최대 수심은 7-8m, 평균 수심은 3m정도로 얕아 성층현상은 나타나지 않으며 평균 체류시간은 3-4개월이나 집수역에서 저수지까지의 유달 시간이 짧아 집수역에서의 실 체류시간은 1주일 미만일 것으로 추정된다.

• Proceedings of the Korea Water Resources Association Conference
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• 2017.05a
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• pp.1-1
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• 2017

녹조현상은 부영양화된 호수나 유속이 느린 하천에서 부유성의 조류(식물 플랑크톤)가 대량 증식하여 수면에 집적하게 되고 물의 색을 현저하게 녹색으로 변화시킴으로써 발생된다. 최근에는 이러한 녹조 현상이 광역화, 독성화, 장기화의 특성을 띠며 빈번히 발생되고 있다. 녹조현상은 독소를 발생시키는 남조류에 의해 수생식물에 악영향을 주는 것으로 알려져 있다. 예를 들면 독소에 의한 가축에의 영향, 생태계 파괴로 인한 생태학적인 문제, 산소결핍으로 인한 물고기 및 각종 수중생물 폐사 등의 심각한 문제를 야기한다. 또한 조류는 식수에서 맛과 냄새를 유발할 뿐 아니라 Microcystin-LR과 같은 유해한 독소를 배출하여 공중 보건을 위협한다. 이에 식수원으로 사용되는 하천의 조류 번식에 따른 대응방안 마련이 절실히 요구된다. 유입되는 조류로 부터의 정수처리 설비의 처리 부하를 줄이기 위해서는 취수시스템과 연계한 고속 전처리 조류 제거 시스템을 개발이 필요하다. 기존의 전기응집부상공정(Electro-Coagulation and Flotation, ECF)은 화학 약품(응집제) 투여량이 적은 이점이 있지만 비교적 긴 전기 분해 시간이 필요하여 기존 정수처리 시스템과 연계성에 있어 한계가 있다. 이에 본 연구는 전기 분해 시간을 줄여 유입된 조류를 수 초 내에 응집하여 1분 이내에 조류를 분리하는 초고속 조류 전처리 기술을 개발하였다. 개발된 기술의 현장적용 및 실험 결과, 응집과정이 없이도 Chlo-a는 약 45 %의 제거 효율을 나타났다. 또한 응집제의 투입 및 전극에 의한 부상시스템에 의해 Chlo-a가 약 80 %로 제거되는 것으로 나타나 빈번하게 발생되는 조류로부터 안정적인 물 공급을 위한 전처리 공정으로 활용이 가능할 것으로 판단된다.

• Korean Journal of Social Welfare
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• v.58 no.1
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• pp.373-393
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• 2006

This study aimed at understanding the experience in deciding for childcare of unmarried lone mother and searching for intervention methods through in-depth examination of the essence of the experience. To achieve this, the Colazzi analysis of phenomenological research was applied. The subjects of study were 7 unmarried lone mothers in early age of the twenties and thirties, who resided in an institution for unmarried lone mothers. An in-depth interview was held individually with them with question of "What is the experience in deciding for childcare as a unmarried lone mother" twice on the average from Nov. 2003 to Feb. 2005. The results found that a unmarried lone mothers' experience in childcare meant 'resurrection' through analyzing 22 themes and 7 theme clusters(confusion due to pregnancy, harsh feeling for reality suffering alone, feeling of love for a baby, mental conflict about childcare, decision toward childcare, firm in decision, hope for resurrection). Although the results of this study have the limitation of generalization due to phenomenological study, it will contribute to accepting and understanding mother-and-child families as one type of family rather than regarding them as being difficult or alienated in family and society, to recognizing the need of taking back their rights, and to suggesting intervention methods for unmarried lone mothers.

• The Journal of Korean society of community based occupational therapy
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• v.1 no.1
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• pp.59-72
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• 2011

Objective : The purpose of this research was to understand the emotions of disabled in starting relationships with the opposite gender and disclosing experienced events related to starting relationships with the opposite gender. Methods : In order to gain an understanding of experience, emotions and process of people with acquired disability, phenomenological study, a form of qualitative research was used. Data on subjects was collected through in-depth interviews, on-the-scene recording and technical observation diary, etc and were analyzed through Colaizzi's phenomenological study method. Results : Subjects who had acquired disabilities experienced changes in physical, psychological, social aspects and especially in the course of relationships with the opposite gender. Data from in-depth interviews of 8 subjects were analyzed 6 types of subject themes were derived. 1) Diagnosis of varying psychological reactions. 2) Various psychological reactions of parents and the other gender. 3) Through aggressive support rehabilitation volition will change. 4) After you have a disability as a lack of social skills. 5) Changes in confidence through rehabilitation. 6) the other gender for the different ideas. Conclusion : This research is valuable in presenting important data in understanding problems and emotions of relationships of people with acquired disabilities with opposite gender. Starting relationships with the opposite gender has more meaning than any other interacting activities in society. Conflicts exist in starting relationships and support programs for various specialists are indispensable.

• Geophysics and Geophysical Exploration
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• v.13 no.3
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• pp.286-294
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• 2010

Korea Institute of Geoscience and Mineral Resources (KIGAM) has installed and operated seven seismoacoustic (infrasound) arrays as well as seismic stations in Korea. The seismo-acoustic array, which consists of co-located seismometers and micro-barometers, can observe both seismic and infrasonic signals from distant explosive phenomena. The infrasound is defined as low frequency (<20 Hz) acoustic waves in atmosphere. In particular, it can be detectable at long distance due to its low energy attenuation during propagation in atmosphere. KIGAM adopted the infrasound technology to discriminate surface explosions from earthquakes only because the surface explosion generally generates infrasound following seismic signal. In addition to surface explosions, these arrays have detected diverse geophysically natural and artificial phenomena, such as infrasound signal from the North Korean nuclear test. This review introduced the state-of-the-art studies and examples of infrasonic signals in and around the Korean Peninsula. In conclusion, infrasound technology would be clearly accepted itself as a new Earth monitoring technology by expanding its detectable regime to lithosphere-Earth surface-atmosphere. In future, an advanced technology, which allows to analyze seismic and infrasonic wave fields together, will enlarge the understanding of geophysical phenomena and be used as a robust analysis method for remote explosive phenomena in the broad infrasound regime.

• Membrane Journal
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• v.27 no.6
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• pp.519-527
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• 2017

Membrane fouling is the main issue hindering the expansion of low pressure membrane processes for surface water treatment. Therefore, applying periodic hydraulic cleaning for fouling control should be well optimized. Better understanding of membrane fouling associated with periodic hydraulic cleaning would be useful to optimize membrane cleaning strategies. By comparing experimental permeability data with the classical Hermia blocking laws, this study aims at analyzing membrane fouling and understanding dominant fouling mechanisms occurring when filtering a synthetic surface water solution with a pressurized membrane process during six filtration cycles of 30 min each, separated with cyclic cleaning of 1 min by backwashing and forward flushing separately and combined. When applying single cleaning technique, membrane fouling during the first cycles was controlled by complete blocking mechanism while the last cycles were dominated by cake formation. Nevertheless, when combining cleaning technique better membrane regeneration was obtained and fouling was mainly due to cake formation.