목적 : 본 연구는 통계청에서 시행한 2004, 2009, 2014년 ‘생활시간조사’의 행동분류를 작업영역에 따라 분류한 후, 연령 및 년도 별로 한국인의 각 작업영역에 따른 시간사용량 변화를 비교하고자 하였다. 연구방법 : ‘2004, 2009, 2014년 생활시간조사’의 원자료 중 10세 이상인 대상자 각각 31,634, 20,263, 26,988명의 시간사용량을 이용하였다. 연령은 10대에서부터 80대까지 10년 주기로 구분하였고 작업치료 실행체계(Occupational Therapy Practice Framework; OTPF)의 작업영역에 따라 원자료의 행동을 재 분류하여 분석하였다. 결과 : 2004년부터 2014년 동안 시간사용량의 변화를 연령대 별로 살펴보면 10대에서는 ‘놀이’, ‘사회참 여’, ‘휴식’이 증가하였고 20대에서는 ‘교육’시간이 증가한 반면, ‘일’과 ‘여가’시간은 감소했다. 40대와 50 대에서는 주중 ‘일’시간은 증가했고, 주말 ‘여가’시간은 증가했다. 60대 이상의 경우 전반적으로 ‘여가’시 간이 증가하였으나 TV시청과 같은 정적인 활동이 대부분이었다. 결론 : 본 연구 결과를 통하여 연령대 별 작업영역에서의 시간사용량에 차이가 있었다는 것과 2004년부터 2014년에 이르는 동안 시간사용량의 변화가 있음을 파악하였다. 이러한 결과는 작업치료에서 클라이언 트의 작업수행시간을 재배치할 때 비교자료로 활용이 가능하고 최근의 동향을 분석하여 주기적으로 반 영하는 것이 필요함을 시사한다.

The purpose of this article is to understand the status of education informatization in the Philippines based on trainee reports of the APEC e-Learning Training Program from 2007 to 2013. The entire number of the Philippines trainees was 60. 15 K-Fishbone analyses, project areas of interest, and purpose for participation in the training course were included in the scope of analysis. Specifically, this paper highlighted a trend in changing ICT policies and initiatives in the Philippines through K-Fishbone analysis. There were 3 major trend shifts in education informatization: the initial period (2007~2008) showed a Reversed Trapezoidal type, which then changed to Diamond type (2009~2011) and recently to Left Side Stingray type (2012~2013). Through the initial stage (2007~2008), education policy, an education integration system, motivation and HW, SW were all been equally important. During the interim period (2009~2011), supply of HW, SW and training received greater attention, followed by the demand for education policy and an education integration system in recent years (2012~2013). Finally, the analysis results of the K-Fishbone analysis proved that they fit well with the policies and initiatives implemented by the Philippines Department of Education.

Since people spend more than 85% of their time indoors, understanding indoor aerosol behavior is important in order to protect human health against aerosol exposure. In this article, exposure, behavior, and control technologies for indoor aerosols are addressed. Previous studies conducted in Korea during the period from 2004 to 2016 were reviewed. Most studies were focused on field surveys of PM10 concentration in public facilities regulated by law. More fundamental studies are needed in order to control indoor aerosols effectively due to the fact that Korea has different building structures and lifestyles compared with western countries.

This study investigates the trend on application technologies of advanced composite materials and outlook on research development to the challenges associated with innovative applications of advanced composite materials in construction: 1) initiation of new construction materials; 2) development of rehabilitation techniques for aging infrastructural systems; 3) implementation of greener construction approaches; and 4) introduction of multifunctional advanced composite materials. This fundamental investigation will assure wide field implementation of advanced composite materials in construction.

유기실리콘 계면활성제는 소수성 유기실리콘 그룹에 친수성 극성 그룹이 결합되어 있다. 유 기실리콘의 독특한 특성으로 인하여 유기실리콘 계면활성제는 낮은 계면장력, 윤활성, 퍼짐성, 발수성, 열 안정성, 화학적 안정성 때문에 폴리우레탄 폼, 건설재료, 화장품, 페인트잉크, 농약 등 많은 산업분야 에 사용되고 있다. 특히 저분자 유기실리콘을 소수기로 한 트리실록산 계면활성제는 낮은 표면장력과 우수한 습윤/퍼짐성 때문에 super wetter/super spreader로서 활용되고 있으나 가수분해에 취약한 단점 도 가지고 있다. 트리실록산 계면활성제의 기능향상과 단점개선 등 응용분야에서의 요구사항을 반영하기 위하여 다양한 화학구조를 가진 트리실록산 계면활성제들이 개발되고 있다. 본 총설에서는 소수성 트리 실록산 중추로서의 반응성 트리실록산의 합성방법, 반응성 트리실록산을 친수성 그룹과 결합시키는 규소 수소화반응같은 주요 반응방법, 그리고 폴리에테르, 카보하이드레이트, 제미니, 볼라폼, 더블 트리실록 산 타입 등 주요 저분자 트리실록산 계면활성제들의 합성방법을 논의한다.

엥겔계수에 의하면 1980년 이전까지는 빈곤단계에 해당한다. 이 시기의 특징은 기본적인 배고픔을 충족하기 위한 양식소비가 증가하고 식물성 소비 중심의 단일성을 그 특징으로 한 다. 개혁·개방 이후 1980년대 초반부터 1995년까지가 대체로 원바오 단계에 해당한다. 이 단 계는 알류, 수산물, 조류(가금육), 소고기, 양고기의 소비량이 양적으로 늘어나는 특징을 갖고 있다. 반면 양식, 채소 등 식물성 식품의 소비량은 양적으로 감소하고 있다. 이 단계에 다원 화가 시작되는 추세가 나타난다. 샤오캉 단계에도 우유, 조류, 소고기, 양고기, 과일, 수산물, 알류의 소비량이 양적으로 늘어 나는 추세가 심화되고 있다. 양식, 채소 등 식물성 식품의 소비량이 양적으로 감소하는 추세 도 원바오 단계와 마찬가지로 샤오캉 단계에도 계속되고 있다. 다원화 추세가 양적으로 심화 되고 있는 것이다. 지출 금액 기준에서 보아도 이와 유사한 결과이다. 샤오캉 단계에서 지출 금액이 높은 항목은 우유·유제품, 수산물 등이다. 지출 금액 기준의 외식비 통계를 보면 샤오 캉 단계에 우유·유제품, 수산물에 이어 세 번째로 증가율이 높다. 반면 지출 금액 기준으로 증가율이 낮은 항목 가운데 하나는 양식이라는 점에서 양적 기준의 결과와 유사하다. 부유단계는 양적 기준에 의하면 조류, 우유, 수산물에 증가율이 높다. 조류, 수산물의 소비량 증가는 가공(냉동가공 포함)을 통해 상품화되기 용이한 식품이다. 하지만 부유단계에서도 양적으로 양식, 채소, 돼지고기의 소비량이 여전히 가장 높은 품목이다. 지출금액 기준으로 보아도 역시 유사한 연구결과이다. 우유·유제품과 육류·조류·가공제품의 증가율이 높다. 특히 부유단계에는 외식비의 비중을 가장 늘린다는 사실도 확인되었다. 증가율이 낮은 항목은 역 시 기본식품인 양식이다. 소득 수준별로 보아도 위와 유사한 결과를 보인다. 고소득층은 지출금액면에서 수산물과 우유·유제품의 소비량을 더욱 늘리고 양식의 소비량을 줄인다.

연료전지는 친환경적 에너지 발생원으로 미래의 에너지 부족 문제와 공해 문제를 한꺼번에 해결하기 위한 방법으 로 최근 그 연구가 활발히 진행되고 있다. 연료전지는 별도의 발전 장치를 필요로 하지 않고, 수소와 산소의 반응에 의해 전 기를 직접 생산하기 때문에 발전 효율이 높다. 연료전지 시스템에서의 핵심 기술은 고분자 분리막을 제조하는 것으로써 상용 화된 나피온 전해질막은 제조 단가가 높고 고온에서 성능이 급감한다는 단점이 있다. 따라서 많은 학자들이 나피온 전해질 분리막을 대체하기 위한 연구가 활발히 진행되고 있다. 본 총설에서는 연료전지용 전해질 분리막의 특허 및 논문의 기술 경 쟁력 평가를 통하여 국가별, 기관별, 기업별 발표 빈도수를 정리하였으며, 고분자 전해질 연료전지, 직접 메탄올 연료전지, 그 리고 알칼리 연료전지에 대한 평가를 진행하였다.

Worldwide production of mushrooms has been increasing by 10–20% every year. Recently, Pleurotus eryngii and P. nebrodensis have become popular mushroom species for cultivation. In particular, China exceeded 8.7 million tons in 2002, which accounted for 71.5% of total world output. A similar trend was also observed in Korea. Two kinds of mushrooms— Gumji (金芝; Ganoderma) and Seoji—are described in the ancient book 'Samguksagi' (History of the three kingdoms; B.C 57~A.D 668; written by Bu Sik Kim in 1145) during the Korea-dynasty. Many kinds of mushrooms are also described in more than 17 ancient books during the Chosun-dynasty (1392~1910) in Korea. Approximately 200 commercial strains of 38 species of mushrooms were developed and distributed to cultivators. The somatic hybrid variety of oyster mushroom, ‘Wonhyeongneutari,’ was developed by protoplast fusion, and distributed to growers in 1989. Further, the production of mushrooms as food was 199,829 metric tons, valued at 850 billion Korean Won (one trillion won if mushroom factory products are included) in 2015. In Korea, the major cultivated species are P. ostreatus, P. eryngii, Flammulina velutipes, Lentinula edodes, Agaricus bisporus, and Ganoderma lucidum, which account for 90% of the total production. Since mushroom export was initiated in 1960, the export and import of mushrooms have increased in Korea. Technology was developed for liquid spawn production, and automatic cultivation systems led to the reduction of production cost, resulting in the increase in mushroom export. However, some species were imported owing to high production costs for effective cultivation methods. In academia, RDA scientists have conducted mushroom genome projects since 1997. One of the main outcomes is the whole genome sequencing of Flammulina velutipes for molecular breeding. With regard to medicinal mushrooms, we have been conducting genome research on Cordyceps and its related species for developing functional foods. There are various kinds of beneficial substances in mushrooms; mushroom products, including pharmaceuticals, tonics, healthy beverages, functional biotransformants, and processed foods have also became available on the market. In addition, compost and feed can likewise be made from mushroom substrates after harvest.

Recently, the interest in the educational robotics has grown greatly, but few studies have been conducted in this field. This study intended to investigate the trend of usage robotics in education during the period of 2001-2014 while analyzing 133 research papers to find the answers to the following questions. First, what is the general research trend of utilizing robotics in education? Second, what are the most recent issues and challenges of robotics in education? Publications have been analyzed using quantitative analysis and cross-tabulation. All gathered articles have been categorized and analyzed under twelve categories. Furthermore, seven categories have been cross-tabulated with other categories. Overall findings present that there are a significant amount of publications on higher and secondary education. Articles on early education and teachers training have started to become more apparent lately. It has also been noticed that robotics generally is seen as an extracurricular activity. Among educational robots, ‘robot kit’ type was one of the highly utilized, especially LEGO Mindstorms robot kit. The main objective of most analyzed articles is the experience of a course curriculum. Results of the study show that there are three main issues and challenges of robotics in education. First, there is a lack of quantitative research on the impact of robotics in education. Second is an absence of well-defined curriculum for target audience. Third is the narrow use of robotics in education. The study also present recommendations for future research.

We analyzed research trend and public perception related with tap water to identify major factors affecting low consumption of tap water. 805 research articles were collected for text mining analysis and 1,000 on-line questionnaires were surveyed to find social variables influencing tap water intake. Based on the word network analysis, research topics were divided into 4 major categories, 1) drinking water quality, 2) water fluoridation, 3) residual chlorine, and 4) micro-organism management. Compared with these major research topics, scientific studies of drinking behavior, or social perception were rather limited. 22.4% of total respondents used tap water as drinking water source, and only 1% drank tap water without further treatments (i.e. boiling, filtering). Experience of quality control report (B=0.392, p=0.046) and level of policy trust (B=1.002, p<0.0001) were influential factors on tap water drinking behavior. Age (B=0.020, p=0.002) and gender (B= - 1.843, p<0.0001) also showed significant difference. To increase the frequency of drinking the tap water by social members, the more scientific information of tap water quality and the water policy management should be clearly shared with social members.

Additive manufacturing (AM) is defined as the manufacture of three-dimensional tangible products by additively consolidating two-dimensional patterns layer by layer. In this review, we introduce four fundamental conceptual pillars that support AM technology: the bottom-up manufacturing factor, computer-aided manufacturing factor, distributed manufacturing factor, and eliminated manufacturing factor. All the conceptual factors work together; however, business strategy and technology optimization will vary according to the main factor that we emphasize. In parallel to the manufacturing paradigm shift toward mass personalization, manufacturing industrial ecology evolves to achieve competitiveness in economics of scope. AM technology is indeed a potent candidate manufacturing technology for satisfying volatile and customized markets. From the viewpoint of the innovation technology adoption cycle, various pros and cons of AM technology themselves prove that it is an innovative technology, in particular a disruptive innovation in manufacturing technology, as powder technology was when ingot metallurgy was dominant. Chasms related to the AM technology adoption cycle and efforts to cross the chasms are considered.

세라믹 소재는 고분자 나노섬유 분리막과 비교하여 우수한 열안정성과 고투과 물성을 가짐으로써 지난 10여 년간 많은 주목을 이끌어왔다. 최근 들어 높은 다공도와 유량을 가지는 세라믹 섬유 분리막이 금속 산화물을 이용하여 주로 전기 방사법에 의해 제조되어 왔는데, 이러한 세라믹 분리막의 제조 단가를 감소하며 성능을 향상시키기 위해 나노섬유의 선택층 을 가지는 세라믹 분리막들이 전기방사 공정과 개질 과정을 통해 개발되었다. 본 리뷰에서는 최근 수년간 세라믹 섬유 분리 막의 개발을 위한 연구 동향에 대하여 정리하였다.

정부는 정책적으로 ICT 기반 시설원예의 첨단화로 농작물의 생산성을 높이고 에너지 절감형 스마트 온실의 보급 확대를 계획하고자 한다. 그러나 농업 분야에 있어서 모니터링 및 제어의 다양성 및 연계성은 매우 부족한 실정이다. 이에 자동화된 시설원예를 활용하여 다양한 모니터링 및 제어를 위한 복합형 알고리즘을 활용한 농업생산 전주기적 과정의 지능적 시스템화를 위한 현장 중심형 사물인터넷 기반 스마트팜 융합 서비스 시스템의 개발이 필요하다. 따라서, 농업분야 ICT 현장적용 관련 국내·외 연구 동향을 소개하고 이로부터 시설원예 분야에 접목 가능한 ICT 기반 미래 핵심기술을 분석 및 제시하고자 하였다.

The basic instrument for oral hygiene is toothbrush. Many patents that are announced to enhance efficiency and convenience by changing shape and using new material. There are also patents regarding its various functions. This study, the purpose of study, was surveyed the toothbrush patents from 2005 to 2014. The patent search was done in site 'kipris' using keyword ‘toothbrush’. Among sorts of administrative measure, enrollment and extinction patents was searched, followed by classified patents into its shape, materials, function and electronic toothbrush. For the patents with function, detailed analysis was done. Total numbers of toothbrush patents decreased in 2006 to 2008, lowest in 2008, and steadily increased to 2014. The patents regarding shape was outnumbered material. Shape and material patents could be divided by handle portion and head portion patents, which patents of head portion is more than handle portion. The patents of function could be classified into certain situation or combinate functions to its natural function. Function patents increase with the ratio of total patents. For brush patents, they have a tendence of increase. In addition, from a shape and function, toothbrush patents going to be more variable. It choose small quantity batch production. From a shape of toothbrush, patents regarding head portion are going to increase. And it has a tendency to change the shape rather than the development of materials for efficiency of toothbrushing. Electronic toothbrush will be placed certain position, however, conventional toothbrush also will place large portion by estimating patent number and there be more progressive. Some patents will catch popularity like combination of brush and paste, replacement of brush head, attraction for toothbrushing, and hygiene tooth brush. Also disposable toothbrush and portable toothbrush are getting popularity along with social phenomenon.

Along with toothbrushes, toothpaste has been used for a long time to improve the personal oral hygiene. Toothpaste was firstly introduced to Korea through as a form of powder by the Japanese company Lion Corporation in 1889 and in 1954, the LakHee Chemistry company released Korea’ s first ever tube type cream toothpaste called lucky toothpaste, and afterwards we got to where we are today in terms of toothpaste. As a variety of products are released and customer choices become more diverse, there needs to be a development of toothpaste that can fulfill customers’ needs and requests. Therefore, this study analyzes toothpastes and related patents submitted to the Patent Office from 1962 to June 2015, thereby examining the changes in toothpaste development trends up to the present day. This study was searched using the keyword ‘toothpaste’ in the patent, utility model search engine at Kipris(www.kipris.or.kr), a patent search site, and categorized a total of 2,465 patents, which excluded those rejected by the Patent Office and those unrelated to toothpaste, using titles, full texts of publications and announcements. Research results showed that in the past, from 1960 to 1989, patents related to toothpaste containers took up the highest ratio of 35%. However, after 1990, patents pertaining to toothpaste composites and functionality made up the highest percentage of 54%, and from 2010 to 2015, it occupied 72% of the whole; therefore, we analyzed in detail the patents related to composites and functionality. Taking a look at the objectives and effects of patents having to do with composites and functionality, we found out that from 1964 to June 2015, patents related to Base, a basic component of toothpaste, and those having to do with periodontal disease took up the highest percentages of 25% each, and from 2010~2015 in particular, patents concerning periodontal diseases were submitted 3% more than those about Base. Composites aiming to prevent and treat periodontal diseases can be divided into four different categories, based on components; among those, there were a total of 171 (57%) patents related to living organism and herbal medicine extracts, 107 (36%) patents using compounds, 16 (5%) patents using bamboo salt as well as salt, and 5 (2%) patents using mineral components such as gold, silver. Looking at these investigation results, it can be thought that with the increasing development of toothpaste related to periodontal diseases, there’ s a great amount of interest about toothpaste of effective periodontal disease prevention and treatment purposes. Along with this, we thought that research about how effective periodontal disease toothpastes actually are is also necessary.