• 한국응용과학기술학회지
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• 제36권3호
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• pp.876-884
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• 2019

We investigated the effect of moderate- and high-intensity resistance training on hippocampal neurotrophic factors and peripheral CCL11 levels in high-fat diet (HFD)-induced obese mice. C57/black male mice received a 4 weeks diet of normal (control, CON; n = 9) or a high-fat diet (HF; n = 27) to induce obesity. Thereafter, the HF group was subdivided equally into the HF, HF + moderate-intensity exercise (HFME), and HF + high-intensity exercise (HFHE) groups (n = 9, respectively), and mice were subjected to ladder-climbing exercise for 8 weeks. The hippocampal brain-derived neurotrophic factor (BDNF) and nerve growth factor (NGF) levels were significantly lower in the HF group than in the CON group (p < 0.05). In addition, in the HFME and HFHE groups were significantly higher than in the HF group (p < 0.05). The peripheral CCL11 levels were significantly higher in the HF group than in the CON group (p < 0.05). In addition, in the HFME and HFHE groups were significantly lower than in the HF group (p < 0.05). However, there was no significant difference according to the exercise intensity among the groups. Collectively, these results suggest that obesity can induce down-regulation of neurotrophic factors and inhibition of neurogenesis. In contrast, regardless of exercise intensity, resistance training may have a positive effect on improving brain function by inducing increased expression of neurotrophic factors.

• 한국가족관계학회지
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• 제23권3호
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• pp.131-152
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• 2018

Objectives: The purpose of this study was to compare the first echo boomer to second in the needs for family strengths and family functions, after controlling the sociodemographic characteristics. Method: For this study, a survey was conducted with 406 never-married young adults, which has 182 first echo boomers and 224 seconds echo boomers as using the same self-report questionnaire. Results: First, the two echo boomer groups exhibited similar patterns in their perception of the three family strengths, positive family values, pursuit of coexistence, and spiritual value, in that order. On the other hand, in regard to family functions, groups' perceived emotion entertainment leisure function as core functions of the family, but the second echo boomers, unlike the first echo boomers, expressed a higher need for economic functions rather than functions for children generation. Second, the analysis of this study indicated that, even in cases where first and second echo boomers had the same social-demographic characteristics, the latter in contrast with the former tended not to regard spiritual values such love for shared ethical values, compassion, and religious beliefs as a family strength, and did not require functions for children generation of the family. Conclusions: From these findings, the differences in the needs for family strengths and functions expressed by the two generations belonging to two different birth cohorts were influenced by various changes in Korean society occurring between the two generations, such as the social divergence in the functions of care and nurture, the increase in one-person and childless households, and the weakening of kinship-centered or communitarian forms of familism.

• 인간식물환경학회지
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• 제24권2호
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• pp.153-167
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• 2021

Background and objective: With the revision of the Act on Urban Parks, Green Areas, Etc. in 2013, the "urban agricultural park" was newly established under the subcategory of "themed park," thereby establishing the institutional basis for the creation of urban agricultural parks. However, urban agricultural parks are still in the early stages of their introduction. There is a lack of research on direction setting and specific operation management that considers urban residents' needs and the city's physical infrastructure. Methods: We utilized the public service design process suggested by the Ministry of the Interior and Safety of the Republic of Korea in 2019 to identify problems and develop directions for urban agricultural parks. The process consisted of the following four steps: Understanding, Discovering people's needs, Defining real problems, and Developing ideas. Results: As four types of ideas for revitalizing urban agricultural parks, 'information users want to know,' 'user participation in design,' 'venue for local communities,' and 'urban agricultural parks as health and rest areas' were derived. This means that urban agricultural parks must provide the information users want; users must plan, decide, and implement such information by directly participating in the creation and efficient management and operation of urban agricultural parks; and urban agricultural parks must be used as a venue for local communities. Urban agricultural parks should also be spaces for health and relaxation. Conclusion: Urban agricultural parks should avoid the unified space and passive participation patterns of existing urban parks, and become real spaces for resident participation that can satisfy all the production, leisure, landscape, ecology, and psycho-social needs of the users of urban agricultural parks. Furthermore, it is necessary to introduce a more systematic and diverse operating system so that it can work to revitalize the local community and connect organically with the function of the city.

• 한국의류산업학회지
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• 제24권4호
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• pp.471-478
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• 2022

In roadside workplaces, more attention should be paid to the safety of workers. The roadside workers underestimate the effect of the brightness of their clothes and judge that drivers will recognize them easily, and the drivers misjudge that the roadside workers are far away and that the vehicle can be stopped in sufficient time. Therefore, customized safety education reflecting this and wearing work clothes with certified visibility functions are required. In Korea, it is not compulsory for roadside workers and vehicle guide attendants to wear work clothes with a visibility function. In this study, the distance ahead perceived by drivers was measured using manikins wearing certified and non-certified reflective safety vests. The perception distance of the non-certified reflective safety vest was 1.4 times longer than that of the certified reflective safety vest, thus confirming the importance of wearing a certified reflective safety vest. To prevent roadside workers from suffering traffic accidents, we propose the enactment of a law that makes it mandatory for them to wear high-visibility safety clothing. Specifically, Article 32 of the Enforcement Regulation of the Road Traffic Act should include high-visibility safety clothing in life protection equipment, and additionally, to prevent secondary accidents, we propose the enactment of a law requiring the installation and wearing of certified reflective safety vests in vehicles.

• 대한화장품학회:학술대회논문집
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• 대한화장품학회 2003년도 IFSCC Conference Proceeding Book I
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• pp.338-351
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• 2003

UV radiation is the most dangerous stress factor among permanent environmental impacts on human skin. Consequences of UV exposure are aberrant tissue architecture, alterations in skin cells including functional changes. Nowadays new kinds of outdoor leisure-time activities and changing environmental conditions make the question of sun protection more important than ever. It is necessary to recognize that self-confident consumers do not consider to change their way of life, they demand modern solutions on the basis of new scientific developments. In the past one fundamental principle of cosmetics was the use of physical and organic filter systems against damaging UV-rays. Today new research results demonstrate that natural protecting cell mechanisms can be activated. Suitable biological actives strongly support the protection function not from the surface but from the inside of the cell. A soy seed preparation (SSP) was proven to stimulate natural skin protective functions. The major functions are an increased energy level and the prevention of DNA damage. These functions can I be defined as biological UV protection. The tumor suppressor protein p53 plays a key role in the regulation of DNA repair. p53 must be transferred into the phosphorylated form to work as transcription factor for genes which are regulating the cell cycle or organizing DNA repair. A pretreatment with SSP increases the phosphorylation rate of p53 of chronically UV-irradiated human keratinocytes significantly. According to the same test procedure SSP induces a dramatic increase in the expression of the tumor suppressor protein p14$^{ARF}$ that is supporting the p53 activity by blocking the antagonist of p53, the oncoprotein Mdm2. Mdm2, a ubiquitin E3-ligase, downregulates p53 and at the same time it prevents phosphorylation of p53. The positive influence of the tumor suppressor proteins explains the stimulation of DNA repair and prevention of sunburn cell formation by SSP, which was proven in cell culture experiments. In vivo the increased skin tolerance against UV irradiation by SSP could be confirmed too. We have assumed, that an increased repair potential provides full cell functionality.y.

• 예술인문사회 융합 멀티미디어 논문지
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• 제7권7호
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• pp.847-856
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• 2017

본 논문은 사용자들에게 알맞은 공원을 추천해주는 시스템을 제안한다. 사회적, 심리적, 환경적, 신체적 등 사람들에게 긍정적인 요소를 제공하는 도시공원의 기능에 따라 서울시 도시공원을 6가지로 분류한다. 분류된 공원을 규칙기반 전문가 시스템을 기반으로 사용자들에게 추천한다. 공원 선택에 영향을 주는 요인들을 언어 객체로 설정하여 규칙 기반 추론 시스템을 논리 프로그램 언어인 PROLOG로 구현한다. 공원 추천의 규칙 기반 객체는 활동·다목적성과 접근성, 이용 시간을 기준으로 총 9가지 언어 객체를 설계하고 그에 따른 허용된 값을 부여한다. 이를 이용하여 생성된 규칙들이 사용자의 선호도에 따라 점화되고 추천 공원을 추론한다. 선호도에 대한 정보는 사용자들에게 직접 공원 선택에 있어서 기준이 되는 세 가지 요소에 대한 질문을 건네는 대화의 방식으로 얻는다. 결과적으로 공원 추천 시스템을 통해 공원 이용자들의 공원 이용 및 여가 생활에 대한 만족감을 높여주고자 한다.

• 운동영양학회지
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• 제13권2호
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• pp.147-153
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• 2009

Effect of whole body vibration exercise on intracerebral hemorrhage in rats. Intracerebral hemorrhage is one of the most devastating types of stroke. This disease is known to cause severe neurological damage and also has a very high mortality rate. In the present study, the effects of whole body vibration exercise on memory capability and apoptotic neuronal cell death in the hippocampal CA1 region following intracerebral hemorrhage in rats were investigated. Intracerebral hemorrhage was induced by injection of collagenase into the hippocampal CA1 region using a stereotaxic instrument. The rats were divided into 5 groups: the sham-operation group, the hemorrhage-induction group, the hemorrhage-induction and 8 Hz vibration exercise group, the hemorrhage-induction and 16 Hz vibration exercise group, and the hemorrhage-induction and 24 Hz vibration exercise group. The animals in the whole body vibration exercise groups received whole body vibration at 8 Hz, 16 Hz, and 24 Hz, respectively for 30 min once a day during 14 consecutive days. In the present results, the apoptotic neuronal cell death in the hippocampal CA1 region was significantly increased following induction of intracerebral hemorrhage, resulting in memory impairment. Whole body vibration exercise suppressed hemorrhage-induced apoptosis in the hippocampal CA1 region. This suppressive effect of whole body vibration exercise also alleviated hemorrhage-induced memory impairment. Here in this study, we have shown that whole body vibration exercise inhibited intracerebral hemorrhage-induced apoptotic neuronal cell death and thus facilitated recovery of brain function following intracerebral hemorrhage.

• International Journal of Internet, Broadcasting and Communication
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• 제15권4호
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• pp.294-303
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• 2023

This study was to find out the differences in self-esteem, body composition, and muscle strength of middle-aged women, and nine physical labor groups were selected as beautification workers at D University in Cheonan, and a total of 17 were selected as non-physical labor groups were 8 full-time housewives living in Cheonan. After selecting the subjects, the subjects arrived 30 minutes before the start of the experiment and completed the self-esteem questionnaire. After taking the stability, the measurement was carried out in the order of body composition, grip strength, and isokinetic muscle function, and the independent sample t-test was conducted. First, middle-aged women's self-esteem according to the type of physical labor was high in the physical labor group in relation to others among the sub-factors. Second, there was no significant difference in body composition according to the physical labor patterns of middle-aged women. Third, there was no significant difference in lower limb isokinetic muscular strength according to the types of physical labor of middle-aged women. Third, there was no significant difference in lower limb isokinetic muscular strength according to the types of physical labor of middle-aged women. The self-esteem according to physical labor is caused by the sense of belonging in the workplace, and the difference between body composition and muscular strength is insignificant. Therefore, it is necessary to introduce a physical activity program to promote self-esteem due to aging and prevent physical deterioration regardless of occupation.

• 대한교통학회지
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• 제27권2호
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• pp.157-168
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• 2009

개인여객이 운송수단을 선택하여 얻는 효용은 시간, 비용 등의 운송특성과 소득 등 개인특성의 함수이다. 기존 연구에서는 일반적으로 운송특성이 여객효용에 미치는 효과를 추정하기 위한 방법으로 운송특성변수에 대해 선형인 효용함수를 전제로 한 무작위 효용모형을 이용하여 왔다. 그러나 본 논문에서는 개인여객의 효용극대화를 분석하는 방법으로서 운송수단선택행위가 소비, 여가, 소득창출 등 보다 본원적인 활동으로부터 파생된다는 점에 주목하여, 다시 말해, 개인의 본원적 활동에 따른 효용극대화 관점에서 운송수단선택에 따른 효용이 진정으로 선형의 형태를 지니고 있는지를 살펴보았다. 이론적 결론은 첫째, 본원적 활동에 따른 효용이 소비와 여가만의 함수일 때 선형가정은 운송시간의 일부구간에서 진실이다. 둘째, 만일 효용이 노동활동이나 운송시간에 의해 직접 영향을 받을 경우 운송특성에 따른 효용의 선형성은 극단적인 상황이 아니면 성립하지 않는다. 따라서 운송특성에 따른 효용의 크기를 추정하기 위해선 선형이 아닌 보다 일반화된 함수에서의 근사가 요구된다.

• 한국수자원학회논문집
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• 제46권3호
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• pp.277-285
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• 2013

경인아라뱃길의 경관기능은 조망대상으로써 인근 아파트주민에게는 외부경제효과를 의미한다. 본 연구의 목적은 주택가격에 내재된 아라뱃길 조망권의 가치를 평가하는 것이다. 적용된 방법은 헤도닉가격모형(HPM)이다. 조망 수혜지역 내에 있는 아파트들 중 2011년 기간에 실제 거래가 이루어진 총 4,207세대로부터 수집된 자료를 기반으로 아파트매매가격, 단지특성, 입지특성, 시점특성 등과 관련된 변수들을 도출하였다. 투입 속성으로서 조망권변수는 수치지형도와 Google Mapview의 결합에 의해 고안된 조망권 알고리즘에 의해 도출되었다. 기존에 수행된 주택가격결정모형의 추정결과와 비교해 보았을 때, 본 모형의 추정결과는 계수의 크기에 있어 다소의 차이는 있으나 방향성에 있어서는 일치하는 경향을 보였다. 특히, 주거공간으로부터 아라뱃길까지의 거리와 아라뱃길의 조망권이 주택가격 형성에 있어 중요한 역할을 한다는 점을 밝혔다. HPM에 의해 추정된 조망권의 가치는 평당 16.5만원으로 나타났다. 역내 모집단 아파트로 확장된 아라뱃길 조망권에 의한 지역자산 고도화 효과는 총 891억원으로 추정되었다.