• 제목/요약/키워드: Article 78

검색결과 123건 처리시간 0.026초

A Review on Floating Photovoltaic Technology (FPVT)

  • Yousuf, Hasnain;Khokhar, Muhammad Quddamah;Zahid, Muhammad Aleem;Kim, Jaeun;Kim, Youngkuk;Cho, Eun-Chel;Cho, Young Hyun;Yi, Junsin
    • Current Photovoltaic Research
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    • 제8권3호
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    • pp.67-78
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    • 2020
  • A novel energy production system which has fascinated a wide consideration because of its several benefits that are called floating photovoltaic technology (FPVT). The FPVT system that helps to minimize the evaporation of water as well as an increase in energy production. For the research purposes, both electrical and mechanical structure requires studying of these systems for the development of FPVT power plants. From different points of views, numerous researches have been directed on FPVT systems that have evaluated these systems. The present research article give a logical investigation and up to date review that shows the different features and components of FPVT systems as an energy production system is offered. This articles reviewing the FPVT that gets the attention of the scientists who have the investigational stage and involuntary inspection of FPVT systems in addition to influence of implementing these systems on the water surface. Also, a comprehensive comparison has been constructed that shows the cons and pros of various types of solar systems that could be installed in various locations. In this review, it has been found that solar energy on the roof of a dwelling house generally has a power of 5 to 20 kW, while the inhabitants of commercial buildings generally have a power of 100 kW or more. The average power capacity of a floating solar panel is 11% more of the average capacity of a solar panel installed on the ground. Studies show that 40% of the water in open reservoirs is lost through evaporation. By covering only 30% of the water surface, evaporation can be reduced by 49%. The global solar panel market exceeds 100 GW and the capacity of 104 GW will bring the annual growth rate to 6%. In 2018, the world's total photovoltaic capacity reached 512 GW, an increase of 27% compared to the total capacity and about 55% of the renewable resources newly created that come from photovoltaic systems. It has been also predicted by this review that in 2025 the Solar technology including the FPVT system will increase by 7.38% that is 485.4 GW more of today installed power worldwide.

보툴리눔 독소를 이용한 Frey 증후군 환자의 치료 (Treatment of Frey's Syndrome Patients with Botulimum Toxin A)

  • 박병찬;류민희;김태곤;김용하
    • Archives of Plastic Surgery
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    • 제36권3호
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    • pp.283-288
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    • 2009
  • Purpose: Frey's syndrome is a common complication after parotid surgery and characterized by gustatory sweating and flushing in the periauricular area during meals. Although a variety of methods have been proposed to prevent this postoperative problem but they have been unsatisfactory. In this article, therefore, botulinum toxin A was used to treat nine patients with Frey's syndrome and its duration effect after injection was investigated. Methods: Nine patients became the object of study about the effect of botulinum toxins as treatment of Frey's syndrome. Age of patients ranged from 25 to 78 years (mean, 43.7 years). Six of nine patients had both symptoms of gustatory sweating and flushing. And the others had only gustatory sweating symptom. Using Minor starch iodine test, the affected skin area was detected, and it was marked by $1cm^2$ sized grid appearance. After application of EMLA cream on the gustatory sweating area, botulinum toxin A was injected intracutaneously into the affected skin area ($2.5U/cm^2$). Patients were followed up from six to fifteen months (mean, about 12 months) and asked about improvement of their symptoms. Results: The treatement with botulinum toxin A took effective within two days after injection. Six months after injection, gustatory sweating disappeared completely in all patients, and five of six patients who had gustatory flushing improved in their symptom. Last follow-up, no patients complained of recurrent gustatory sweating and flushing except one. One patient, seven months after initial injection, was retreated with botulinum toxin A because of recurrence, and the result was successful. The duration of the effect after botulinum toxin A treatment was ranged from seven to thirteen months. One patient in our series experienced the upper eyelid weakness as adverse effect, but it improved spontaneously. Conclusion: Local injection of botulinum toxin A is an effective, safe and long - lasting method for treatment of Frey's syndrome. Hereafter, however, additional study will be required to evaluate the duration effect of botulinum toxin A according to frequency in use and dosage.

대학생의 종교몰입과 개인특성이 창업의지에 미치는 영향에 관한 연구 (A Study on the Relationship among Religious Commitment, Individual Traits, and Entrepreneurial Intentions of College Students in Korea)

  • 이주헌
    • 벤처창업연구
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    • 제11권4호
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    • pp.71-78
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    • 2016
  • 종교는 개인과 사회에 지대한 영향을 미치는 것으로 알려져 있다. 종교는 네트워크 형성과 사회문화 형성에 영향을 미쳐 개인의 의사결정에 간접적으로 영향을 줄 수 있다. 또, 종교의 가르침은 윤리적 가치관에 영향을 미쳐 개인의 의사결정에 직접적으로 영향을 줄 수 있다. 하지만, 세속화 가설에 의하면 사회가 효율화되고 구성원에 대한 교육수준이 증대할수록 종교의 통제력과 사회영향력은 떨어지게 된다고 한다. 종교와 창업의지 간에는 어떤 연관성이 있을까? 종교와 개인의 창업의사결정 간의 관계를 실증 연구한 논문은 많지 않다. 본 논문의 목적은 선행연구에서 확인된 성취동기, 문제해결력, 창업자 부모 및 친구 등과 같은 개인특성 변수와 아울러 종교몰입이 창업의지에 어떠한 영향을 미치는지 실증적으로 분석하는 것이다. 본 연구에서는 총 229명의 대학생들을 대상으로 설문조사를 실시하여 분석하였다. 본 연구를 통해 확인된 결과는 다음과 같다. 첫째, 종교몰입은 창업의지에 영향을 미치지 않은 것으로 나타났다. 또, 종교몰입은 창업의지에 전통적으로 영향을 주고 있는 개인특성 변수인 성취동기, 창업자 부모 및 친구, 문제해결력 등과 전혀 상관관계가 없었다. 둘째, 선행연구와 마찬가지로 성취동기, 창업자 부모 및 친구는 창업의지에 영향을 미치는 것으로 나타났다. 셋째, 성취동기와 창업의지 간의 관계에 있어서 창의성은 완전매개효과를 가지는 것으로 조사되었다.

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핵심 잡지의 결정 요인에 관한 연구

  • 김선호
    • 정보관리학회지
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    • 제5권1호
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    • pp.53-78
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    • 1988
  • The purpose of this study is to verify the factors determining core journals in a field based upon the results of the citation analysis of the journals in the field of Korean History(KH). In order to verify the determinant factors, dividing the articles of the KH journals into their novelty and author's seniority, the following hypotheses were established. Hypothesis 1: When a KH journal publishes more articles on prehistoric and ancient eras than others, the journal will have higher chance to be included in the core journals. Hypothesis 2: When a KH journal publishes more articles by senior researchers than others, the journal will have higher chance to be included in the core journals. To achieve the purpose, the cited articles found in the two sample journals, namely, Backsan Hakbo and Hanguksa Yongu were analysed during the past 20 years from 1962 to 1981. Applying the Hirst's Discipline Impact Factor method to the the study, Historical Science Impact Factor(HSIF) on the samples itself and the historical era dealt with in the articles and the seniority of the authors during every five-year period. Based upon thr present study to ver~fy the two hypotheses, the following conclusions have been reached. 1) Tht. most influencing sublect mattcr era or1 thix liSIF of the lo~lrual is arranged in prehistoric arid ancient, Koryo, Chosun, recent era, and the others by order of era. 2 ) Clial~g~~lg a fringe or semicore journal u~to a core j ~ u r n a l , very IISIF' 011 it> article e r a 1s grown up arrd prcllistoric a ~ ~ d ancierlt era:. are, s p c c ~ a l l ~ , incr.eased high relatively. Char~ging a core journal int:~ a fr~ngr or semicort. journal, t.very IISIF ti dropped and prel~istc~ric and ancieut taras arc, fallen sharp relatively. 3) The most irlflr~encin~ s~niority 011 the t1SII- of ihc journal I. the senior.., written or1 prehistoric and ancient eras. Above all, the senilir'b HSIF olr prehistoric anti anclent e r a s a r e most ~nfluencing the cliangi~rg of the core journal into the fringe ur bemicore. .i) flypothesis fl is no1 vcrif~ed i r t general. T l ~ e rt, lative connections bet wee^^ the senior's HSIF 011 each era and tht, ~ l ~ a l ~ g i t l g of the tort. ji1ur.tia1 arc \:er~fied in part hut r~ot in the wliole. 5) 'The reason why the 11SIF or1 prehistori~. arid ar~cic~nt e r a s is higl~er than others can be assumed becaltic the new <, xcavations a r r contit~ued actively i l l the prrsr.llt as to the relics arid remains or1 that eras. Accordingly, the HSIF' r i l l thr 11ew 3ubject matter l~ke arcl~acmlogy trends to grow up greatly. Bctween the senior's and juriior's JISIE', junior'.; is higl~er than s., nior's except ancient e r a . That reason can be assumed bccausr Iunlorb t r j to solve the ex~sting problems thr~urglr their ow11 new viewpoints and sights. So, i t should be studied whether the 11SlF on the artic1t.s of the new subject matters and viewpoirrts is influenced to the changing of the core jorlrnal or not.

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초등학생의 건강정보문해력 (Health Literacy of Elementary School Students)

  • 안은정;권인수
    • Child Health Nursing Research
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    • 제20권4호
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    • pp.322-331
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    • 2014
  • 목적 본 연구는 초등학교 고학년의 건강정보문해력 정도를 파악하고 건강정보문해력에 영향을 미치는 일반적 특성을 파악하기 위해 수행되었다. 방법 대상자는 G도 시, 군지역 9개 초등학교 5, 6학년으로 331명을 대상으로 하였다. 자료수집은 2013년 7월 15일부터 8월 15일까지 실시되었으며 자료분석은 PASW (SPSS ver.20.0) 프로그램을 이용하여 분석하였다. 결과 언어적 건강정보문해력의 평균점수는 42점 만점에 $24.02{\pm}7.16$점으로 정답률은 57.2%이며, 학년과 학교성적이 언어적 건강정보문해력에 유의한 영향을 미치는 변수로 나타났다. 기능적 건강정보문해력 중 수리영역의 평균점수는 6점 만점에 $4.73{\pm}1.49$점으로 정답률 78.8%이며, 학년과 학교성적이 유의한 영향을 미치는 변수로 나타났다. 기능적 건강정보문해력 중 독해영역의 평균점수는 6점 만점에 $4.54{\pm}1.34$점으로 정답률은 75.7%로성별과 학교성적이 유의한 영향을 미치는 변수로 나타났다. 결론 초등학교 고학년의 언어적 건강정보문해력은 매우 낮은 수준이며, 기능적 건강정보문해력은 건강과 관련된 내용을 판단하기에 충분하지 않은 수준임을 알 수 있었다. 건강정보문해력은 특히, 학교성적에 따라 차이를 보여, 학교성적이 낮은 학생을 대상으로 한 건강정보문해력을 높이기 위한 전략이 필요하다. 또한 성인을 대상으로 한 선행 연구에서 대상자에 따른 다른 다양한 요인이 건강정보문해력에 영향을 미치는 것을 고려해 볼 때 초등학생의 건강정보문해력에 영향을 미치는 다양한 요인에 대한 연구가 필요하다.

ORIGINAL ARTICLE - 자가 온레이 블럭골 이식 후 증대된 치조골과 임플란트의 평가 (Evaluation of augmented alveolar bone and dental implant after autogenous onlay block bone graft)

  • ;조민성;허정우;오철중;정광;박홍주;국민석;정승곤;오희균
    • 대한치과의사협회지
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    • 제50권6호
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    • pp.329-338
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    • 2012
  • Introduction: The purpose of this study is to evaluate the clinical results of vertical alveolar ridge augmentation using autogenous block bone graft, especially resorption rate, and outcomes of dental implants placed in the grafted site. Patients and Methods: Medical records and radiographs were reviewed. Twenty-seven patients who have been received the autogenous block bone graft which harvested from chin, ramus, and ilium, and the implant installation on 31 areas(22 maxillas and 9 mandibles) were included. Eight implants were installed simultaneously at the time of bone graft in 4 patients, and 65 implants were installed after 4.9 months(range 2~18 months) of autogenous block bone graft in 23 patients. The resorption amount and rate of augmented bone, and the success and survival rates implants were evaluated. Results: Mean height of the augmented block bone was $5.9{\pm}2.3mm$(range from 2.5 to 13.0 mm). Mean follow-up period after block bone graft was 30.4 months(range from 16 to 55 months). Mean resorption of the augmented block bone was $2.0{\pm}1.5mm$ (range from 0.5 to 7.24 mm). The success and survival rates of the implants were 78.1 % and 98.6%, respectively. Conclusion: This study indicates that the autogenous block bone graft is a useful and stable method for alveolar ridge augmentation for dental implant. And more augmentation is needed to compensate the resorption of the grafted bone.

공진단의 효과에 대한 문헌적 고찰 (A Literature Review of Effectiveness on the Gongjin-dan (Gongchen-dan))

  • 이진현;조동찬;김창곤;문수정;박태용;고연석;송용선;이정한
    • 한방재활의학과학회지
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    • 제23권3호
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    • pp.69-78
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    • 2013
  • Objectives The purpose of this study was to investigate the effectiveness of the Gongjin-dan (Gongchen-dan, here in after GJD) in order to obtain the evidence for clinical application. Methods The GJD-related articles published from 1990 to 2013 were searched using "Korean Traditional Knowledge Portal", "Oriental Medicine Advanced Searching Integrated System (OASIS)", "Korean Association of Medical Journal Edition (Koreamed)", "Research Information Services (RISS4U)", "Korean Medicine Database (KMbase)", "National Discovery for Science Leader (NDSL)", "PubMed", "China National Knowledge Infrastructure (CNKI)". The search keywords were "Gongjin-dan", "Gongchen-dan". Thirty-nine articles were obtained. After excluding the eighteen article which did not meet inclusion criteria, finally twenty-one articles were included; five clinical articles and sixteen experimental articles. Results In clinical studies, GJD has the various effectiveness in cardiovascular diseases, alcoholic hepatitis, mild dementia, anemia. Also experimental studies related to the GJD show a variety of effects, such as anti-oxidative activity, neuroprotective activity, hepatoprotective activity, anti-inflammatory activity, immunological activity, reproductive recovery activity with fewer side-effects. Conclusions It has been suggested that there are various effects of GJD in treating a wide-range disease. However, in order to put GJD to use for many kinds of diseases in more reasonable ways, it is needed to publish well-design clinical trial based on the variety of results of experimental studies.

국제항공운송협약의 Door to Door 운송에의 적용에 관한 문제점 (Problems on the Door to Door Application of International Air Law Conventions)

  • 최명국
    • 무역상무연구
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    • 제78권
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    • pp.1-29
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    • 2018
  • This article demonstrates that both the Warsaw Convention Systemand the Montreal Convention are not designed for multimodal transport, let alone for "Door to Door" transport. The polemic directed against the "Door to Door" application of the Warsaw Convention systemand the Montreal Convention is predominantly driven by the text and the drafting philosophy of the said Contentions that since 1929 support unimodalism-with the rule that "the period of the carriage by air does not expend to any carriage by land, by sea or by inland waterway performed outside an airport" playing a profound role in restricting their multimodal aspirations. The drafters of the Montreal Convention were more adventurous than their predecessors with respect to the boundaries of the Montreal Convention. They amended Art. 18(3) by removing the phrase "whether in an aerodrome or on board an aircraft, or, in the case of landing outside an aerodrome, in any place whatsoever", however, they retained the first sentence of Art. 18(4). The deletion of the airport limitation fromArt. 18(3) creates its own paradox. The carrier can be held liable under the Montreal Convention for the loss or damage to cargo while it is in its charge in a warehouse outside an airport. Yet, damage or loss of the same cargo that occurs during its surface transportation to the aforementioned warehouse and vice versa is not covered by the Montreal Convention fromthe moment the cargo crosses the airport's perimeter. Surely, this result could not have been the intention of its drafters: it certainly does not make any commercial sense. I think that a better solution to the paradox is to apply the "functional interpretation" of the term"airport". This would retain the integrity of the text of the Montreal Convention, make sense of the change in the wording of Art. 18(3), and nevertheless retain the Convention's unimodal philosophy. English courts so far remain loyal to the judgment of the Court of Appeal in Quantum, which constitutes bad news for the supporters of the multimodal scope of the Montreal Convention. According the US cases, any losses occurring during Door to Door transportation under an air waybill which involves a dominant air segment are subject to the international air law conventions. Any domestic rules that might be applicable to the road segment are blatantly overlooked. Undoubtedly, the approach of the US makes commercial. But this policy decision by arguing that the intention of the drafters of the Warsaw Convention was to cover Door to Door transportation is mistaken. Any expansion to multimodal transport would require an amendment to the Montreal Convention, Arts 18 and 38, one that is not in the plans for the foreseeable future. Yet there is no doubt that air carriers and freight forwarders will continue to push hard for such expansion, especially in the USA, where courts are more accommodating.

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유도계획과 QM 도구들을 활용한 신제품 개발과정의 혁신 전략 (Innovation Strategy For New Product Development Process by Indicative Planning & QM Tools)

  • 유지현;정태욱;송인철;오현승;이세재;조진형
    • 산업경영시스템학회지
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    • 제40권4호
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    • pp.78-86
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    • 2017
  • The new businesses started by the companies usually results in being unsuccessful. The main reasons for that are either aiming targeting wrong customers, unsatisfaction of customers' requesting quality standards, or taking wrong actions against the competitors in the market. Therefore, companies should aim the targets for the newly developing products based on the fulfilling values for the customers when they start the new businesses, and should take good cares for risk managements at the each step of the new business to prevent the failure in advance. In addition to that, the companies starting new businesses not only need to take the customers attributes (CA) into account, but they also should apply the new technologies as one system to initiate a new business to satisfy the basic wants of the customers. This article suggests the New Product Development Pursuing Model using the Indicative Planning methodology and the Quality Management tools. The New Product Development Pursuing Model would be completed by the following steps as below; 1. Drawing the CTQ (Critical To Quality) for setting up the new product development objectives by : i) using the VOC (Voice Of Customers) obtained by the QFD (Quality Function Deploypment) if the market is mature, ii) applying AHP (Analytic Hierarchy Process) to information in the QIS (Quality Information System) if the market is unmature to get enough need information of the customers. 2. Risk Management in NPD : The NPD pursuing model consisted of the IP (indicative planning) is suggested not by the process of top-down-way mandatory planning process, but by the tools used in the administrative science and economic fields, namely by governance. The companies could apply innovative methodology for new products development processes to fulfil the customers satisfaction in the fields, through the CA (Contingency Approach) of the NPD (New Product Development) process.

광주시내 여중학생의 도시락 영양실태와 식품 기호 및 환경요인과의 관계 (Relationships between the Nutritional Status for Lunch-Box, the Taste of Food and the Environmental Factors of Middle School Girls in Kwangju City)

  • 안순례
    • 대한가정학회지
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    • 제26권3호
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    • pp.53-68
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    • 1988
  • This article concerned with the nutritional status and the taste of the lunch box of 311 middle school girls in Kwangju City from May 18 to June 12 in 1987. The purpose of this research was making materials to show direction of the education about nutrition by checking relationships among the nutritional status for the lunch box, the taste of food and the environmental factors. The results observed in the study were as follows: 1. The intake of nutrition from the lunch box and the ratio between the recommended dietary allowance and the contained nutrients in the lunch box as follows. Calorie(603 Kcal, 78.6%), protein (21.7g, 93.1%) Animal protein (10.3g, 132.1%) calcium (151.7 g, 56.9%) Ferrum 93.1 mg, 51.7%), Vitamin a (129.3 RE, 55.4%) Vitamin B1 (0.29 mg, 72.5%), Vitamin B (0.26 mg, 55.3%) Niacin (4.7 mg, 94.0%), Vitamin C 913.2 mg, 79.0%). Except animal protein, all the recommended dietary allowance. 2. According to the intake of calorie, the ratio of taken carbohydrate, protein and fat was 77.7 : 15.5 : 6.8. The intake of protein was desirable but most of calorie depended on carbohydrate. Among the total intake of protein, the ratio of animal protein was 47.5%, which was a high rate. 3. Most of calorie (75%), was taken from staples, protein (41.5%), vitamin B1 (48.3%) were taken at the same rate from staples and side dishes. Most of fat, calcium, ferrum, vitamin A, vitamin B, and vitamin C, was taken from side dishes. 4. In taking among the five basic food groups, proportion of the grain fourth food group was the highest, light color vegetable the third food groups, proportion of the grain fourth food group was the highest, light color vegetable the third food group was second, and Calcium food the second food group was the lowest. 5. As the staples, students liked tchajangmyon, mandu and ttokkuk as written order. They disliked Kongbap and Patpap. As the side dishes for the lunch box, they liked kimchi, ham, sausage, cuttlefish, dried slices of filefish, eggs and green seaweed as written order. As a side dishes they liked Laver, Cucumber, Squid, lettuce, Potatoes. They disliked pork fat, cow's intestines, cow's liver, Crussian carp, pickled fish. The favorite snack was fruits, ice cream, hamburger, Chocolate and milk. 6. In taking condition of the principal food, rice rate (65.6%) was the most, and mixed food was 5 or 10%. 7. Favorite cooking was frying, roasting and kimch. But disagreeable cooking was pickling. 8. Favorite food was what was pungent but disagreeable food was what was salty. 9. the higher parents educational background was, the higher their income was. Also the more various the information about the nutrition was, the better the intake of nutrition was. 10. The preference tendency influenced in choosing the side dish of the Lunch box. The higher the preference tendency of the girl students became, the better their nutrition condition became.

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