• 제목/요약/키워드: USE IMPACT

검색결과 4,840건 처리시간 0.031초

풍력에너지의 환경친화적 이용 (Sustainable use of wind energy)

  • 이영희
    • 기술사
    • /
    • 제44권2호
    • /
    • pp.46-50
    • /
    • 2011
  • Wind energy, as an alternative to fossil fuels, is plentiful, renewable, widely distributed, clean, and produces no greenhouse gas emissions during operation. However, the construction of wind farms is not universally welcomed because of their visual impact, competing land use, comprising human health impacts, building and crop damage, loss of amenities and ecological impact, impact on wildlife, danger to birds, safety hazard, aesthetics and noise. Offshore wind power, in particular, offers a huge potential to generate clean energy. However, the envisaged massive expansion of wind farms in oceans is already causing severe environmental conflicts. Wind farms cause further harm to already threatened oceans. Wind power has negligible fuel costs, but a high capital cost. The expansion of climate-friendly wind energy use both onshore and offshore can only be successful it the legal and organizational conditions undergo some clear improvements.

  • PDF

부모의 아동기 폭력 경험과 자녀 체벌과의 관계모형 (Intergenerational Effects of Violence in Childhood : A Relational Model)

  • 정준미;이재연
    • 아동학회지
    • /
    • 제21권1호
    • /
    • pp.85-98
    • /
    • 2000
  • This study examined the impact of physically punished experiences in childhood on parents' use of corporal punishment with their own children. The sample of parents who had been exposed to family violence in childhood was obtained from 4th and 5th grade elementary school children. The sample consisted of 420 parents of which 292 were suitable for this study. Physically punished experiences or parents in childhood influenced aggression, and aggression had an impact on the corporal punishment of children i.e. physically punished experiences and coping strategy did not have a direct impact on the corporal punishment of children but had an indirect effect through aggression. Mothers whose parenting attitude was high in the shame were low in use of corporal punishment while mothers high in use of corporal punishment were low in shame.

  • PDF

기술준비도가 자동출입국 심사시스템 사용의도에 미치는 영향에 관한 연구 (The effect of technology readiness on the usage of Smart Entry Service)

  • 최진호;박진우
    • 한국항공운항학회지
    • /
    • 제21권4호
    • /
    • pp.71-76
    • /
    • 2013
  • This paper seeks to investigate the effect of technology readiness on the usage of smart entry service. The questionnaires were distributed to passengers who were experience with smart entry service and structural equation modeling was utilized to analyze the data. The results revealed that optimism had a positive impact on perceived usefulness and insecurity had a negative effect on perceived enjoyment. Perceived ease of use had a positive impact on perceived enjoyment, perceived usefulness and intention to use. In addition, perceived usefulness had a positive impact on intention to use. The results from this paper can be used as basic knowledge for developing the smart entry service activation plan.

Knowledge, Attitude and Practice of Tobacco Use and Its Impact on Oral Health Status of 12 and 15 Year-Old School Children of Chhattisgarh, India

  • Tiwari, Ram Vinod;Megalamanegowdru, Jayachandra;Gupta, Anjali;Agrawal, Ankush;Parakh, Abhinav;Pagaria, Sulabh;Sahu, Abhishek
    • Asian Pacific Journal of Cancer Prevention
    • /
    • 제15권23호
    • /
    • pp.10129-10135
    • /
    • 2015
  • Background: Tobacco is a leading preventable cause of deaths worldwide; the situation is particularly serious in the developing countries. Tobacco use amongst the children and adolescents is already a pandemic and they are vulnerable targets of tobacco industry. This is also the case in India. Objectives: 1) Document and monitor the prevalence of tobacco use including smoked, smokeless and other forms of tobacco; 2) Understand student knowledge and attitudes related to tobacco use and its health impact; 3) Assess the impact of tobacco on the oral health status of school-going children in India. Materials and Methods: The sample was 1,500 school children of the age group 12-15 years age. A pretested, close ended questionnaire was administered in the form of extensive face to face interview to understand student knowledge, attitudes and behavior related to tobacco use and its health impact and to assess the prevalence of tobacco use including smoked, smokeless and other forms of tobacco. Oral health status was assessed using the Community Periodontal Index (CPI). Frequency distribution, Chi-square tests and Odd's ratio was calculated. Results: Prevalence of tobacco usage amongst the prevalence was 20.4%: 9.2% reported smoking, 15.8% used tobacco in the chewable form and 25.3% children were involved in consuming betel nut/areca nuts. The OR (Odd's ratio) for calculus formation was highest for guthka chewers (OR=14.322), paan masala chewers had the highest odds of developing bleeding on probing when compared to the others. Conclusions: There is an urgent need to launch school-based tobacco prevention programs for community awareness of children and the public, as preventing the initiation of a habit is far easier than stopping it.

Research on the Uses and Gratifications of Tiktok (Douyin short video)

  • Yaqi, Zhou;Lee, Jong-Yoon;Liu, Shanshan
    • International Journal of Contents
    • /
    • 제17권1호
    • /
    • pp.37-53
    • /
    • 2021
  • With the advent of the 5G era, smart phones and communications network technology have progressed, and mobile short video of people's life can be made, Of the new tools of communication, at present, China's social short video industry has shown rapid development, and the most representative of the short video app is Douyin (international version: Tiktok). Under the background of Uses and Gratifications Theory, this study discusse the relationship between Douyin users' preference degree, use motivation, use satisfaction and attention intention. This study divides the content of Douyin video into 10 categories, selects the form of an online questionnaire survey, uses SPSS software to conduct quantitative analysis of 202 questionnaires after screening, and finally draws the following conclusions: (1) The content preference degree of Douyin short video (the high group and low group) is different in users' use motivation, users' satisfaction degree and users' attention intention. ALL results are within the range of statistical significance.(2) Douyin users' video content preference degree has a positive impact on users' use motivation, users' satisfaction degree, and users' attention intention. (3) Douyin users' motivation has a positive impact on users' satisfaction and user' attention intention. (4) Douyin users' satisfaction degree has a positive impact on users' attention intention. Based on the research results, we suggest that Douyin platform pushes videos according to users' preferences. In addition, as the preference degree has an impact on users' motivation, satisfaction degree and attention intention of using the platform, it is important that the platform's focus should to pay attention to the preference degree of users. Collecting users' preferences at the early stage of users' entering the platform is a good way to learn from, and doing a good job of big data collection and management in the later operation.

인터넷 서점의 이용의도에 영향을 미치는 요인 (The Factors Affecting on Intentions to Use Online Bookstores)

  • 서창교;정현정
    • 한국정보시스템학회지:정보시스템연구
    • /
    • 제17권3호
    • /
    • pp.111-134
    • /
    • 2008
  • As students can purchase textbooks online or from local bookstores, we proposed a model to study the predictors of textbook purchasing from online bookstores based on the theory of reasoned action (TRA) and technology acceptance model (TAM). The survey instrument consisted of 51 items to assess 10 constructs of the proposed model, where the items used to measure the constructs were adapted from previous literature. Pre-testing and pilot testing of the measures were conducted by selected users of online bookstores. Data were collected from 220 university students who have purchased and intend to purchase their textbooks from online bookstores. The findings of this research are summarized as follows. First, navigation, previous experience, and innovation have a significant impact on the buyer's perception of ease of use. Second, price and delivery services have a significant impact on the buyer's perception of usefulness. Third, the perception of ease of use also has a significant impact on the buyer's perception of usefulness. Fourth, the perception of ease of use, perception of usefulness, and subjective norms all significantly support the purchasing intention in the case of online bookstores.

청소년의 음란물 이용이 성폭력 가해행동에 미치는 영향 : 가족지지의 조절효과를 중심으로 (The Effect of Pornography Use Among Adolescents on Violent Sexual Behavior and the Moderating Effect of Family Support)

  • 김재엽;최선아;임정수
    • Human Ecology Research
    • /
    • 제59권4호
    • /
    • pp.489-500
    • /
    • 2021
  • The purpose of this study was to identify the impact of pornography use among adolescents on their subsequent violent sexual behavior, and to ascertain the moderating effect of family support. The study was conducted with a sample of 2,087 Korean middle and high-school students. To analyze the data, a descriptive analysis, a correlation analysis, and a Poisson regression were conducted using SPSS 24.0. A Poisson regression was performed because the dependent variable, violent sexual behavior, was measured by the frequency of occurrence, and most responses were distributed at '0', indicating a non-normal distribution. The results indicated that 8.1% of adolescents admitted to having sexually violent experiences over the past year, with a relatively high rate of sexual harassment. Secondly, 53.3% of adolescents had used pornography over the past couple of years, with the highest percentage of use occurring via the Internet. Finally, pornography use among adolescents had a significant and direct impact on their sexually violent behavior, with family support playing a moderating role. This indicated that, for adolescents with a high level of family support, the impact of pornography usage on sexually violent behavior decreased. Based on these results, we discuss practical and policy interventions to prevent sexually violent behavior by adolescents.

저속충격시 Ball 탄(5.56mm)의 형상변화에 관한 연구 (A Study on the shape deformation of ball projectile(5.56mm) under the low velocity impact)

  • 손세원;이두성;홍성희;김영태
    • 한국정밀공학회:학술대회논문집
    • /
    • 한국정밀공학회 2002년도 춘계학술대회 논문집
    • /
    • pp.865-868
    • /
    • 2002
  • This study investigated the shape deformation of ball projectile(5.56mn) under the low energy impact by the use of the drop weight impact tester. ball projectile(5.56mm) consisted of the copper face with a lead core. The impact conditions were changed with the variations of the mass and the drop height of the impact tup. Shape deformation of ball projectile(5.56mm) after low velocity impact was measured using a video microscope and CCD camera. The test result showed that impact energy by changing of drop height of the impact tup affected shape deformation of ball projectile(5.56mm). So, it is important to study the relativity between shape deformation of ball projectile(5.56mm) and ballistic protection of plate(such as hybrid composite laminates) under the high velocity impact.

  • PDF

공동주택 바닥충격음의 차음성능 평가 (Evaluation of Floor-Impact Sound Insulation for Apartment Buildings)

  • 윤세철;오종민
    • 한국소음진동공학회:학술대회논문집
    • /
    • 한국소음진동공학회 2003년도 추계학술대회논문집
    • /
    • pp.932-937
    • /
    • 2003
  • In apartment buildings, floor-impact sound has bean regarded as the major source which induces complaints from residents. It is mainly due to the use of light-weight structures. The vibration produced by impact on one part of an apartment building would travel as far as the other parts of structure with a little alleviation. As a result, the impact sound from upstairs has been regarded as a main source of noise causing discontentment among accupants. This study was carried out to measure the floor-impact sound levels and evaluate the insulation performance of floor-impact sound for seven apartment buildings. The floor-impact sound levels were measured for seventeen On-dol floor structures and various factors which influence the floor-impact sound were analyzed.

  • PDF

환경영향평가상의 효율성 주민의견 수렴에 관한 연구 (A Study of Effective Collection of Public Opinion on Environmental Impact Assessment)

  • 유헌석;주용준;정성훈
    • 환경영향평가
    • /
    • 제11권4호
    • /
    • pp.311-319
    • /
    • 2002
  • Procedures to establish well-balanced development and effectiveness of environmental impact assessment need include various stakeholder's participation in writing and reviewing document of environmental impact assessment, collecting public opinion, and post monitoring. Accordingly, to encourage effective and efficient collection of resident's opinion analyze present conditions and problems and suggest institutional and politic alternative proposals of it. This study resulted in following conclusions. In institutional aspects, (1) Proposal for drafting document of environmental impact assessment (2) Composition of committee for collecting and regulating stakeholder's opinion (3) Width of civil participation scale. In politic aspects, (1) Use of local community (2) Guide of local information from local society and environmental specialist (3) Understandable document and data of environmental impact assessment (4) Strength of roles and duties of local government.