• 대한환경공학회지
• /
• 제22권10호
• /
• pp.1905-1919
• /
• 2000

활성슬러지 공정에 기반을 둔 연속식반응기는 시스템이 가진 고유한 비선형성뿐만 아니라 계절, 기후 등의 환경변화에 따른 유입수의 유량 및 특성 등의 외부적인 조건의 변화를 고려하여 제어하여야 한다. 수학적 모델링 과정에서 고려하지 못했거나 무시되었던 부분을 포함한 시스템에 관련된 특징과 한정된 공간에서 기본적인 제어방법에 의한 현재의 운전방법을 고려하여 불 때 활성슬러지 공정은 개선할 수 있는 여지가 많다. 또한 숙련된 운전자의 지식을 구현할 수 있는 지능제어기법을 적용하여 전체적인 공정의 효율 향상을 도모할 수 있다. 제어방법의 적용에 앞서 제어대상공정인 활성슬러지 공정을 분석하여 이를 $Matlab^{(R)}5.3/Simulink^{(R)}3.0$을 이용하여 연속식반응기 모델을 구현하였다. IWA(International Water Association)와 COST(European Cooperation in the field of Scientific and Technical Research)에서 제시한 정상상태의 유입수 특성을 이용하여 모델의 정확성을 검증하였다. 본 논문에서는 이미 현장에서 사용중인 제어기법의 구현 및 성능 평가뿐만 아니라 다양한 고급제어기법들을 적용하여 새롭게 제안한 제어기법들이 실제 폐수처리장에 적용가능한지 여부를 검증하였다. 제어방법으로는 현장에서 일반적으로 사용되고 있는 비례-적분-미분제어기(Proportional-Integral-Derivative Controller; PID controller)와 PID제어기가 가진 장점과 퍼지 논리 제어기법이 가진 장점을 결합함과 동시에 제어기의 성능 향상 및 경제성을 높일 수 있는 퍼지 PID이득 조절기(fuzzy PID gain tuner)와 퍼지 셋포인트 변환기(fuzzy setpoint changer)를 적용하여 봄으로써 외란에 대해 강인한 제어기 설계의 가능성을 검증하였다.

• 한국추진공학회:학술대회논문집
• /
• 한국추진공학회 2011년도 제36회 춘계학술대회논문집
• /
• pp.1-2
• /
• 2011

Hybrid rockets have lately attracted attention as a strong candidate of small, low cost, safe and reliable launch vehicles. A significant topic is that the first commercially sponsored space ship, SpaceShipOne vehicle chose a hybrid rocket. The main factors for the choice were safety of operation, system cost, quick turnaround, and thrust termination. In Japan, five universities including Hokkaido University and three private companies organized "Hybrid Rocket Research Group" from 1998 to 2002. Their main purpose was to downsize the cost and scale of rocket experiments. In 2002, UNISEC (University Space Engineering Consortium) and HASTIC (Hokkaido Aerospace Science and Technology Incubation Center) took over the educational and R&D rocket activities respectively and the research group dissolved. In 2008, JAXA/ISAS and eleven universities formed "Hybrid Rocket Research Working Group" as a subcommittee of the Steering Committee for Space Engineering in ISAS. Their goal is to demonstrate technical feasibility of lowcost and high frequency launches of nano/micro satellites into sun-synchronous orbits. Hybrid rockets use a combination of solid and liquid propellants. Usually the fuel is in a solid phase. A serious problem of hybrid rockets is the low regression rate of the solid fuel. In single port hybrids the low regression rate below 1 mm/s causes large L/D exceeding a hundred and small fuel loading ratio falling below 0.3. Multi-port hybrids are a typical solution to solve this problem. However, this solution is not the mainstream in Japan. Another approach is to use high regression rate fuels. For example, a fuel regression rate of 4 mm/s decreases L/D to around 10 and increases the loading ratio to around 0.75. Liquefying fuels such as paraffins are strong candidates for high regression fuels and subject of active research in Japan too. Nakagawa et al. in Tokai University employed EVA (Ethylene Vinyl Acetate) to modify viscosity of paraffin based fuels and investigated the effect of viscosity on regression rates. Wada et al. in Akita University employed LTP (Low melting ThermoPlastic) as another candidate of liquefying fuels and demonstrated high regression rates comparable to paraffin fuels. Hori et al. in JAXA/ISAS employed glycidylazide-poly(ethylene glycol) (GAP-PEG) copolymers as high regression rate fuels and modified the combustion characteristics by changing the PEG mixing ratio. Regression rate improvement by changing internal ballistics is another stream of research. The author proposed a new fuel configuration named "CAMUI" in 1998. CAMUI comes from an abbreviation of "cascaded multistage impinging-jet" meaning the distinctive flow field. A CAMUI type fuel grain consists of several cylindrical fuel blocks with two ports in axial direction. The port alignment shifts 90 degrees with each other to make jets out of ports impinge on the upstream end face of the downstream fuel block, resulting in intense heat transfer to the fuel. Yuasa et al. in Tokyo Metropolitan University employed swirling injection method and improved regression rates more than three times higher. However, regression rate distribution along the axis is not uniform due to the decay of the swirl strength. Aso et al. in Kyushu University employed multi-swirl injection to solve this problem. Combinations of swirling injection and paraffin based fuel have been tried and some results show very high regression rates exceeding ten times of conventional one. High fuel regression rates by new fuel, new internal ballistics, or combination of them require faster fuel-oxidizer mixing to maintain combustion efficiency. Nakagawa et al. succeeded to improve combustion efficiency of a paraffin-based fuel from 77% to 96% by a baffle plate. Another effective approach some researchers are trying is to use an aft-chamber to increase residence time. Better understanding of the new flow fields is necessary to reveal basic mechanisms of regression enhancement. Yuasa et al. visualized the combustion field in a swirling injection type motor. Nakagawa et al. observed boundary layer combustion of wax-based fuels. To understand detailed flow structures in swirling flow type hybrids, Sawada et al. (Tohoku Univ.), Teramoto et al. (Univ. of Tokyo), Shimada et al. (ISAS), and Tsuboi et al. (Kyushu Inst. Tech.) are trying to simulate the flow field numerically. Main challenges are turbulent reaction, stiffness due to low Mach number flow, fuel regression model, and other non-steady phenomena. Oshima et al. in Hokkaido University simulated CAMUI type flow fields and discussed correspondence relation between regression distribution of a burning surface and the vortex structure over the surface.

• 한국식품영양과학회지
• /
• 제37권6호
• /
• pp.729-737
• /
• 2008

본 연구에서는 교육청 학교급식 담당자를 대상으로 쌀빵을 학교급식에 적용하는데 있어서의 가능성 타진을 목적으로 학교급식 담당 실무자의 입장에서 쌀빵에 대한 인식 및 학교급식에의 적용가능성에 대해 분석 조사하였다. 응답한 33부의 설문지를 분석한 결과는 다음과 같다. 첫째, 조사대상자의 대부분(93.9%)은 여자였으며, 교육청 근무경력은 평균 2년 3.5개월, 학교급식관련 근무경력은 평균 8년 8.4개월이었다. 교육청 관할 하에 있는 학교로는 시 도 교육청 그룹에서는 초등학교의 경우 농어촌형 직영 272.3개교, 중학교의 경우 농어촌형 직영 115.5개교, 고등학교의 경우 농어촌형직영 73.0개교로 가장 많은 유형으로 나타났다. 지역교육청의 관할 하에 있는 학교 유형으로는 초등학교의 경우 도시형 직영 23.3개교, 중학교에서는 도시형 직영 11.6개교, 고등학교의 경우 도시형 위탁 5.3개교로 가장 높은 값으로 나타났다. 둘째, 교육청의 학교급식 지원 분야에 대해 복수응답하게 한 결과, 응답한 교육청 모두에서 저소득층 급식비를 지원하고 있었고 식품비 분야에서는 친환경농산물 12개청(50.5%), 우리농산물 5개청(20.8%), 지역농산물 4개청(16.7%)순으로 지원하고 있었다. 시 도 교육청에서는 저소득층 급식비(중앙값 839.0개교)에, 지역교육청에서는 지역농산물 식품비(중앙값 37.5개교)에 가장 많은 학교를 지원하고 있었다. 지원 금액으로는 시 도 교육청이 저소득층 급식비에 평균 168억원, 지역교육청이 급식종사자 인건비가 평균 10억 5천만원을 지원하고 있었다. 셋째, 학교급식에서의 쌀 이용현황을 살펴보면 초등학교에서는 평균 91.26%가 정부미, 40.64%가 지역쌀을 사용하고 있었고, 중학교와 고등학교 역시 정부미와 지역쌀을 주로 사용하고 있는 것으로 나타났다. 쌀 이용 증진에 대한 교육청의 관심도는 평균 5.00점(Likert 7점 척도)이었고 쌀 이용을 위한 교육청의 지원의지는 평균 4.66점으로 관심이 있다고 조사된 반면, 교육청이쌀 이용 증진을 위한 방안 및 정책을 시행한 경험은 평균 3.31점으로 나타나 상대적으로 정책 시행 경험이 적은 것을 알 수 있었다. 넷째, 학교급식에 쌀빵 메뉴 적용을 위한 방안 및 정책에 대해 교육청의 인식을 조사한 결과, 관심도는 평균 4.35점, 쌀빵 지원의지는 평균 4.14점, 급식에 쌀빵 적용의 바람직성은 4.71점, 급식에 쌀빵 적용 실현가능성은 4.69점으로 높은 점수를 나타낸 반면, 쌀빵 적용 방안 및 정책의 시행 경험은 2.18점으로 낮은 수준으로 조사되었다. 쌀빵을 학교급식에 적용하기 위한 바람직한 지원방법은 '관련 조리기기 지원'(예: 오븐) 19명(57.6%), '보조금 지급', '납품가 할인' 각 9명(27.3%), '현물(쌀빵)제공' 8명(24.2%)의 순으로 조사되었다. 쌀빵을 학교급식에 적용할 때의 장점으로는 다수가 '쌀 소비 촉진' 24명(72.7%)이라고 응답하였고, '영양적우수성' 18명(54.4%), '건강 지향적인 학교급식 이미지 제고' 17명(51.5%), '제공메뉴의 다양성' 12명(36.4%) 등의 의견이 있었다. 반면, 장애요인으로는 '조리시설(오븐 등)의 부족' 24명(72.7%), '비교적 높은 원가' 18명(54.5%), '식단 적용의 한계', '제한적인 조리방법'은 각 13명(39.4%), '급식정책의 미흡' 5명(15.2%), '업체의 홍보부족' 4명(12.1%) 등의 순으로 응답하였다. 다섯째, 교육청의 학교급식에서의 쌀 이용에 대한 의견과 쌀빵 적용에 대한 의견과의 상관성을 분석한 결과, 학교급식에서의 쌀 이용 증진에 대한 '관심'과 '지원의지'는 매우 유의한 상관관계가 있었으며(p<0.001), 또한 '관심'과 '지원의지'는 쌀 이용을 증진시키기 위한 방안 및 정책을 시행한 '경험'과 관련성이 있다고 조사되었다(각 p<0.05, p<0.01). 또 학교급식 메뉴에의 쌀빵을 적용하는 것에 있어서도 쌀빵 적용에 대한 '관심'과 '지원의지'는 유의한 상관관계가 있었으며(p<0.001), 쌀빵 적용의 '바람직성'과 '지원의지', 쌀빵 적용의 '실현가능성' 역시 매우 유의한 상관관계를 보여주었다(p<0.001). 쌀 이용에 대한 관심이 적은 그룹과 관심이 많은 그룹 간에는 학교급식 메뉴에 쌀빵을 적용하는 것에 대한 인식의 모든 항목에서 유의한 차이가 없다고 나타났으며, 쌀 이용 증진을 위한 지원의지가 높은 그룹과 낮은 그룹 간에는 쌀빵 적용을 위한 정책을 시행한 경험에 대한 문항을 제외하고는 유의한 차이를 보였다. 또한 쌀 이용 증진을 위한 정책을 시행한 경험 여부에 따른 두 그룹 간 학교급식 메뉴의 쌀빵 적용에 대한 인식을 비교한 결과, 쌀빵 적용에 대한 관심, 지원의지, 정책 시행 경험 문항에 있어서 경험 많은 군이 경험 적은 군에 비해 유의하게 높은 점수를 보여주었다(p<0.01). 이상의 연구 결과는 쌀빵을 학교급식에 적용 및 확대하는데 앞서 정책실행의 주체가 되는 교육청 담당자들의 인식을 파악한 것으로 앞으로의 쌀빵 적용 증진 계획을 효율적으로 세우는 것에 도움이 될 것이라고 판단된다. 연구결과와 같이 대부분의 교육청 급식 담당자들이 쌀 소비 촉진 및 영양과 건강증진 등의 이유로 쌀뿐만 아니라 쌀빵을 학교급식에 적용하는 것에 의지와 관심이 높음을 알 수 있었으나 실제로 실행에 옮기는 경우는 상대적으로 적은 것을 파악할 수 있었다. 따라서 앞으로 쌀빵을 학교급식에 확대 적용하기 위해서는 교육청 담당자들의 이런 의지와 관심을 더욱 확고히 하고 현실적인 지원, 예를들어 오븐 및 현물 지원 등의 적극적인 지원 방안이 수립되어야 한다고 사료된다. 본 연구는 조사대상자인 교육청 급식담당자의 표본수 확보에 한계를 보였고, 아직까지 상용화 및 급식현장에서 제공되는 비율이 미미한 쌀빵이 조사의 주제어였기에 응답자의 인지도 및 인식 부족이 연구의 한계점으로 작용하였다. 향후 급식현장에서의 목소리를 담아낼 수 있는 영양(교)사, 학생을 대상으로 하는 쌀빵관련 연구가 진행된다면 쌀빵 사용 확대에 현실적인 지원책 마련에 일조할 것으로 사료된다.

• 한국지역사회생활과학회지
• /
• 제15권4호
• /
• pp.149-163
• /
• 2004

The purpose of this study is to present a plan to activate the production and consumption of environmently friendly agricultural products through an analysis on the understanding degree, the level and inclination of consumption, the satisfaction degree of consumption, and the comprehension degree of production and circulation process of the environmently friendly agricultural products. 1 reviewed the literature and did survey In this study. The results are as follows : (1) As a result of an analysis on the understanding degree of the environmently friendly agricultural products, it is shown to get 6.37 points out of 10 and also, there is a difference between age, educational background, and income level. (2) In the case of research on the method to distinguish the environmently friendly agricultural products from others, it is proved that consumers have a strong faith on quality guarantee marks and there is a difference between gender, income level, and consumption period. (3) It is also shown that consumers purchase environmently friendly agricultural products for the family member's health in the survey on the motivation for purchasing them. And also, there is a difference between men and women. (4) The result of the survey on the consumption scale of the environmently friendly agricultural products shows that 94 people(60.3％) spend more than 50％ of their gloss foodstuffs cost purchasing them and 20 people(12.8％) spend 30-50％. (5) In the survey on the amount and the frequency of the purchasing items of the envirounently friendly agricultural products, respondents count livestock products mostly in amount while point out main cereals and a kinds of soy and pastes in frequency. (6) Consumers ask that the price of environmently friendly agricultural products is a little expensive or reasonable and there is no differences between individual groups. (7) In the case of the purchase of foreign environmently friendly agricultural products, there are more people who want to purchase domestic ones than those who want foreign ones. Therefore, it is shown that environmently friendly agricultural products have a counterpower after the market-open to import. (8) As a result of the analysis on the quality of environmently friendly agricultural products, it is proved that they have better quality than general agricultural products and also, it is found out that women feel larger differences than men in quality. (9) In the analysis on the satisfaction degree of the environmently friendly agricultural products, it is proved that respondents trust the safety and nutrition of them whereas they are not satisfied with the external shape of them. (10) It is analyzed that tile conversion of consumer's consciousness is the most critical factor for development of environmently friendly agriculture. (11) The factors to activate the consumption of environmently friendly agricultural products are proved in order of the enlargement of direct transaction, the conversion of consumer's consciousness, the easiness of purchase, activating consumers'unions, and publicity.

• 지역사회간호학회지
• /
• 제10권1호
• /
• pp.93-105
• /
• 1999

Recently, Korean health care industry managers are paying more attention to customer oriented service, the rationalization of business administration, and quality control of service to adjust their business to outer environment since IMF bailout program. They are focusing on the cost reduction through remodeling the size and structure of man power, viz. labor flexibility. Nurses are not free from this juncture and contingent nurses are increasing fast. This article intends to verify the actual condition of two types of contingent nurses -part-time nurses and internship nurses-and to compare their job satisfaction to provide basic resource for efficient management of nurse man power. The concrete goals of this article are; Firstly, to verify the actual condition of their employment. Secondly, to compare their job satisfaction. And Thirdly, to the relation between employment condition and job satisfaction. To accomplish these research goals, a statistical survey was executed, in which 384 questionnaires - 66 for manager nurses, 318 for contingent nurses-were given to nurses working at 66 general hospitals-which have at least 100 beds-in Seoul. Among them, 121 questionnaires-of 28 general hospitals-were returned. Then, the data coded and submitted to mean, standard deviation, T-test, variance analysis (ANOVA), correlation analysis, multiple regression analysis with SAS program. The research results of the contingent nurses are followings: 1. Two types of contingent nurses shows similar age spans: they are mostly 21 - 30 years old and unmarried. But internship nurses have high level of educational career. Part - time nurses spread at general beds, out -patient part, intensive care part, operation part, etc, but internship nurses work mostly at general beds. 2. Two groups shows difference in actual employment condition: average employment career of part -time nurses is 7.0 months but internship nurses' is 2.0 months: average duty-on days per month of part - time nurses are 23.7 days but internship nurses' are 24.8 days. But there are little difference in average working time per day: 7.7 hours for part -time nurses and 0 hours for internship nurses. 3. The average wage per month for part -time nurses is 836,026 won but for internship nurses is 557,428 won-66.7% of part-time nurses'. Both groups are enjoying little additional pay. 4. Both groups are getting job not so much through advertisement of newspaper or hospitals as through acquainted person or college. 5. Both groups show very high level of job satisfaction: 3.2195 for part -time nurses and 3.2881 for internship nurses. But they show very low satisfaction on payment level compared with other categories and two groups show meaningful difference(P<.0001). 6. The multiple regression test reveals the factors related with job satisfaction: wage level, working part(OR or ICU), age, job career, and motive of contingent job-taking('because I can take care of family duties at the same time') influence positively: motive of contingent job-taking('because I can work regularly without alternation') influences negatively.

• 한국조리학회지
• /
• 제19권1호
• /
• pp.230-243
• /
• 2013

본 연구에서는 자주적인 소비 주체인 청소년을 대상으로 가공식품 섭취실태와 구매행동대한 인식을 분석함으로써 청소년을 위한 식생활 교육프로그램 개발 연구의 기초자료를 제공하고 학교현장의 가정과 교사들이 효과적인 식생활 교육을 할 수 있도록 조력하는 것에 그 목적을 두었다. 가공식품 선택 시 고려사항으로 맛이 있는 것과 가격이 싼 것 순이었으며, 표시정보 확인 시 중요하게 보는 것은 유통기간과 가격 순으로 높게 나타났다. 가공식품 구입 시 식품첨가물 표시정보는 56%가 확인하지 않으며, 절반 이상의 학생들이 식품첨가물이 적게 든 것을 구입하려는 노력은 하지 않는 것으로 나타났다. 조사대상자의 일반적인 특성에 따른 차이를 분석한 결과, 학교에서 배운 영양지식 활용정도는 여학생일수록, 학년이 낮을수록, 가공식품 구입비용(1일)이 낮을수록 학교에서 배운 영양지식을 더 잘 활용하는 것으로 나타났다. 청소년들은 합리적인 가공식품 구매행동이 아닌 단순하고 본능적인 구매행동을 하고 있어 가공식품 섭취와 관련된 청소년 식행동에 대해 기초적인 영양 교육부터 선행되어야 할 필요가 있다. 또한 실생활에서 활용 가능한 가공식품 관련 영양교육이 더욱 체계적이고 효율적으로 진행되어야 하겠다.

• 대한지역사회영양학회지
• /
• 제10권6호
• /
• pp.905-919
• /
• 2005

This study raised the necessity of developing performance indicators for measuring the management efficiency and effectiveness of school food service, and as a means of helping its implementation, a balanced score card (BSC) approach developed by Norton and Kaplan was adopted. This study established BSC in seven phases through literature: Phase 1 Defining a school food service and the scope of working activities, Phase 2 Establishing the vision of a school food service, Phase 3 Setting strategic goals, Phase 4 Identifying critical success factors (CSFs), Phase 5 Developing Key Performance Indicators (KPIs), Phase 6 Extracting cause and effect relationship, and Phase 7 Completing a preliminary BSC. The preliminary BSC was fumed into a survey, which was administered to food service related people working at the Office of Education and School Food Service including 16 offices,209 dietitians, 48 school administrators both from self-operated and contract-managed, and 9 experts in areas related to school food service. They were asked questions about strategies from 4 different perspectives,12 CSFs, 39 KPls, and the cause and effect relationships among them. As a result, among the CSFs based on 4 different perspectives, all factors other than ' zero sum on profit/loss ' from the financial perspective turned out to be valid. In terms of KPIs, manufacturing cost percentages, casualty loss count/reduction rates, school foodervice participation rates, and sales goal achievement rates were found to be valid from the financial perspective, while student satisfaction index, faculty satisfaction index, leftover ratio, nutrition educational performance count, index of evaluating nutrition education, customer claim count/reduction rate, handling customer claim count/reduction rate, and parent satisfaction index were found to be valid from the customers' perspective. Besides, nutritional requirement sufficient ratio, nutritional management score, food poisoning outbreak count, employee safety accident count, sanitary inspection assessment index, meals per labor hour (productivity index), computerization ratio, operational management index, and purchase management assessment index were also found to be valid from the perspective of internal business processes. From the perspective of innovation and learning, employee turnover ratio/rate of absenteeism, annual education and training count, employee satisfaction index, human resource management assessment index, annual menu-related customer feedback, food service information index for employees and parents/schools were also found to be valid. The significance of this study is to present indices for measuring overall performance of school lunch food service operations without putting any limitation on types of school food service management, and to help correctly assess the contribution of the current types of school food service management to schools and students. (Korean J Community Nutrition 10(6) : $905\∼919$, 2005)

• 한국식생활문화학회지
• /
• 제8권1호
• /
• pp.1-9
• /
• 1993

This study was carried on the preferences for food intake pattern of Korean industrial workers. The survey was conducted from Feb 17, to March 31, 1992 by questionnaires which was composed of 21 items. The subjects of this study were composed of 426 clerical workers, and 439 physical workers. The results were obtained as follows. 1. In the educational background, clerical workers was almost of highschool or collage graduates, and physical workers was almost of highschool graduates. Marginal food cost of per person for lunch a day was from 500 Won to 1,000 Won. They replied that amount of staple food and side dishes were appropriate, and the type of preferable foods was Korean style cooked rice. Also it was known that physical workers thought their nutritive condition more badly than that of clerical workers. So the physical workers considered their health very much when they had meal. It was represented that unbalanced diet, without diet and drinking alcohol effected badly to food intake and taste of food was the most important point in food intake. 2. Preferences for staple foods; Cooked rice was preferred the most by the subjects. Cooked rice with redbean was preferred by clerical workers and cooked rice with soybean was preferred by physical workers and cooked rice with soybean was preferred by physical workers. Also clerical and physical workers liked Kalkooksoo (hot noodle), Nangmyun (cold noodle), bread, vegetable bread and disliked Sphagetti, Ramyun (Instant noodle) in same rate. In the next, cooked rice covered with raw fish pieces (Sushi) was preferred by clerical workers and Mandu-kook was preferred by physical workers. Also they disliked Curriedrice and Hashrice in same pattern. 3. Preference for side-dishes; The Acceptances for side-dishes were high soybean paste soup (clerical workers:43.7%, physical workers:34.4%), Kim chi stew, fried potatoes, crab steaming (37.8%, 36.9%), broiled fish (34.6%, 33.9%), fried green pepper, Ham, Chinese cabbage Kim chi, and pickled garlic by clerical and physical workers all together. But in clerical workers, Wooghugi beef-rib tang, Deodeok muchim, spinach namul, beef jangjeorim, fried shrimp were shown to have high preference in physical workers, beef-rib tang, wild onion and shepherd's purses muchim, soybean sprout, fish jeorim, fried sweet potatoes were high preference. 4. Preference of Snacks; The preferences for snacks were high in strawberry (clerical:36.3%, physical:34.3%), milk (49.9%, 44.4%), waxy rice Doek (30.7%, 30.2%), coffee (40.1%, 38.9%) by two groups in same order.

• Nutrition Research and Practice
• /
• 제11권3호
• /
• pp.247-256
• /
• 2017

BACKGROUND/OBJECTIVES: Easy access to intervention and support for certain behaviors is important for obesity prevention and management. The available technology such as smartphone applications can be used for intervention regarding healthy food choices for obesity prevention and management in elementary-school students. The transtheoretical model (TTM) is comprised of stages and processes of change and can be adopted to tailored education for behavioral change. This study aims to develop TTM-based nutrition contents for mobile applications intended to change eating behaviors related to weight gain in young children. SUBJECTS/METHODS: A synthesized algorithm for tailored nutrition messages was developed according to the intake status of six food groups (vegetables, fruits, sugar-sweetened beverages, fast food and instant food, snacks, and late-night snacks), decision to make dietary behavioral changes, and self-confidence in dietary behavioral changes. The messages in this study were developed from December 2014 to April 2015. After the validity evaluation of the contents through expert consultation, tailored nutrition information messages and educational contents were developed based on the TTM. RESULTS: Based on the TTM, stages of subjects are determined by their current intake status, decision to make dietary behavioral changes, and self-confidence in dietary behavioral changes. Three versions of tailored nutrition messages at each TTM stage were developed so as to not send the same messages for three weeks at most, and visual materials such as figures and tables were developed to provide additional nutritional information. Finally, 3,276 tailored nutrition messages and 60 nutrition contents for applications were developed. CONCLUSIONS: Smartphone applications may be an innovative medium to deliver interventions for eating behavior changes directly to individuals with favorable cost-effectiveness. In addition, using the TTM for tailored nutrition education for healthy eating is an effective approach.

• 한국조경학회지
• /
• 제42권1호
• /
• pp.50-63
• /
• 2014

생태관광은 환경보전과 지역활성화를 동시에 만족시키는 지속가능한 개발의 대표유형으로 각광을 받고 있다. 생태관광의 긍정적인 환경적, 사회문화적 영향에 대한 연구결과는 발표되고 있으나, 실제 경제적 가치에 대해서는 긍정적 의견과 부정적 의견이 엇갈리고 있으며, 경제적 효과를 높이기 위한 요인에 대한 연구는 거의 이루어지지 않았다. 이에 본 연구에서는 한국 생태관광지 중 가장 많은 방문객수를 기록하고 있는 순천만의 실제 방문객 314명을 대상으로 관광행태와 태도, 그리고 만족도가 그들의 소비활동과 어떤 연관성을 가지는지 분석하였다. 그 결과는 다음과 같다. 첫째, 연계관광 유무, 생태관광 경험 유무, 방문 전 순천만 생태관광에 대한 정보유무는 관광소비활동에 영향을 미쳤으며, 특히 관광소비활동 중 숙박비 지출과 관광행태와의 유의성이 가장 높은 것으로 나타났다. 둘째, 개별관광객(FIT)은 단체관광객보다 적극적인 관광태도를 가지고 있으며 숙박비, 체험 프로그램 이용비 지출이 높은 것으로 나타났다. 셋째, 순천만 관광객은 환경적, 사회문화적, 경제적 순으로 긍정적인 태도를 보였으며, 긍정적인 태도를 지닌 관광객의 체험 프로그램 참여가 높았다. 또한 프로그램 참여자의 기부 의사가 높고, 만족도 또한 가장 높았다. 생태관광객의 지역경제 기여도를 높이기 위해 단체관광보다는 개별관광을 유도하고, 생태관광 체험 프로그램 참여를 독려하는 것이 요구되며, 주변 관광자원과의 연계, 다양한 체험 프로그램 개발, 적극적인 정보 전달과 사전교육의 필요성이 고찰되었다.