• Title/Summary/Keyword: search trend

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U-Net Cloud Detection for the SPARCS Cloud Dataset from Landsat 8 Images (Landsat 8 기반 SPARCS 데이터셋을 이용한 U-Net 구름탐지)

  • Kang, Jonggu;Kim, Geunah;Jeong, Yemin;Kim, Seoyeon;Youn, Youjeong;Cho, Soobin;Lee, Yangwon
    • Korean Journal of Remote Sensing
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    • v.37 no.5_1
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    • pp.1149-1161
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    • 2021
  • With a trend of the utilization of computer vision for satellite images, cloud detection using deep learning also attracts attention recently. In this study, we conducted a U-Net cloud detection modeling using SPARCS (Spatial Procedures for Automated Removal of Cloud and Shadow) Cloud Dataset with the image data augmentation and carried out 10-fold cross-validation for an objective assessment of the model. Asthe result of the blind test for 1800 datasets with 512 by 512 pixels, relatively high performance with the accuracy of 0.821, the precision of 0.847, the recall of 0.821, the F1-score of 0.831, and the IoU (Intersection over Union) of 0.723. Although 14.5% of actual cloud shadows were misclassified as land, and 19.7% of actual clouds were misidentified as land, this can be overcome by increasing the quality and quantity of label datasets. Moreover, a state-of-the-art DeepLab V3+ model and the NAS (Neural Architecture Search) optimization technique can help the cloud detection for CAS500 (Compact Advanced Satellite 500) in South Korea.

A Study on Analysis of national R&D research trends for Artificial Intelligence using LDA topic modeling (LDA 토픽모델링을 활용한 인공지능 관련 국가R&D 연구동향 분석)

  • Yang, MyungSeok;Lee, SungHee;Park, KeunHee;Choi, KwangNam;Kim, TaeHyun
    • Journal of Internet Computing and Services
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    • v.22 no.5
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    • pp.47-55
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    • 2021
  • Analysis of research trends in specific subject areas is performed by examining related topics and subject changes by using topic modeling techniques through keyword extraction for most of the literature information (paper, patents, etc.). Unlike existing research methods, this paper extracts topics related to the research topic using the LDA topic modeling technique for the project information of national R&D projects provided by the National Science and Technology Knowledge Information Service (NTIS) in the field of artificial intelligence. By analyzing these topics, this study aims to analyze research topics and investment directions for national R&D projects. NTIS provides a vast amount of national R&D information, from information on tasks carried out through national R&D projects to research results (thesis, patents, etc.) generated through research. In this paper, the search results were confirmed by performing artificial intelligence keywords and related classification searches in NTIS integrated search, and basic data was constructed by downloading the latest three-year project information. Using the LDA topic modeling library provided by Python, related topics and keywords were extracted and analyzed for basic data (research goals, research content, expected effects, keywords, etc.) to derive insights on the direction of research investment.

The Trend of Overseas Studies on the Intervention of Multisensory Environment: Systemic Review (다감각환경중재에 관한 국외 연구의 경향: 체계적 고찰)

  • Cho, Eun-Hee;Song, Hyun-Eun;Yoo, Doo-Han
    • The Journal of Korean Academy of Sensory Integration
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    • v.17 no.1
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    • pp.54-64
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    • 2019
  • Objective : The purpose of this study is to study the effects of multisensory environment interventions, to provide information about clinical applications, and to aid South Korean research on the multisensory environment. Methods : PubMed, Cochrane, and Google Scholar were used to search for papers published from 2008 to 2018. The main search terms were "multisensory environment" and "snoezelen", a total of 10 foreign research articles were selected. And they were summarized according to Patient, Intervention, Comparison, Outcome (PICO). Results : Among the 10 papers, 6 included participants with dementia. The other studies examined patients with intellectual disabilities, patients with schizophrenia, and pregnant women. The study periods ranged from 3 weeks to 10 months. Most of the interventions included 2 or 3 sessions per week. The duration of each intervention session was 30 to 60 minutes. The dependent variables were psychological factors (such as anxiety and depression), social factors (such as quality of life), and cognitive and physical domains. The multisensory environment used for the interventions in the studies consisted of visual, auditory, and tactile senses, as well as additional olfactory and taste sensations, and vestibular sensations. Conclusion : In the future, the research should be applied to various target groups, especially children, who are interested in multisensory environmental intervention in South Korea.

Occupational Therapy in Long-Term Care Insurance For the Elderly Using Text Mining (텍스트 마이닝을 활용한 노인장기요양보험에서의 작업치료: 2007-2018년)

  • Cho, Min Seok;Baek, Soon Hyung;Park, Eom-Ji;Park, Soo Hee
    • Journal of Society of Occupational Therapy for the Aged and Dementia
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    • v.12 no.2
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    • pp.67-74
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    • 2018
  • Objective : The purpose of this study is to quantitatively analyze the role of occupational therapy in long - term care insurance for the elderly using text mining, one of the big data analysis techniques. Method : For the analysis of newspaper articles, "Long - Term Care Insurance for the Elderly + Occupational Therapy for the Elderly" was collected after the period from 2007 to 208. Naver, which has a high share of the domestic search engine, utilized the database of Naver News by utilizing Textom, a web crawling tool. After collecting the article title and original text of 510 news data from the collection of the elderly long term care insurance + occupational therapy search, we analyzed the article frequency and key words by year. Result : In terms of the frequency of articles published by year, the number of articles published in 2015 and 2017 was the highest with 70 articles (13.7%), and the top 10 terms of the key word analysis showed the highest frequency of 'dementia' (344) In terms of key words, dementia, treatment, hospital, health, service, rehabilitation, facilities, institution, grade, elderly, professional, salary, industrial complex and people are related. Conclusion : In this study, it is meaningful that the textual mining technique was used to more objectively confirm the social needs and the role of the occupational therapist for the dementia and rehabilitation in the related key keywords based on the media reporting trend of the elderly long - term care insurance for 11 years. Based on the results of this study, future research should expand research field and period and supplement the research methodology through various analysis methods according to the year.

A Study on Brand Selection Property of Preliminary Business Founder In Food Service Franchise Foundation (외식 프랜차이즈 가맹점창업 시 예비 창업자의 브랜드 선택 속성에 관한 연구)

  • Sung, Daw-kwon;Wu, Jong-phil;Lee, Hyung-gun
    • The Korean Journal of Franchise Management
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    • v.3 no.1
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    • pp.92-110
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    • 2012
  • Due to the social problems including recent economic crisis and unemployment rate increase, the demand of business foundation market has been increased and, in the meantime, on the basis of the business foundation support policy of the government including youth foundation support policy and Small & Medium Business Administration foundation planning, business foundation market has been showing steady growth trend. With this enlargement of foundation market, as the accompanied increase of franchise market is expected, it is considered that the importance of more realistic and concrete research about franchise market be larger than before. This study considered brand image, main office support, foundation cost, information search activity as the advanced variable of effect on brand selection and established the cause of effect on brand selection by improving the existing advanced research, and its result is as follows. First, according to foundation business kind, age, sex, yes or no of marriage, there is some difference III the thought about brand image and foundation possibility. Second, Second, the most important factor of franchise contract intention is economical specificity. It is difficult to consider brand image, franchise support and information search activity as the property having a big effect on preliminary founder, and it was shown that the cost for franchise management(Consistency with initial foundation cost and self-capital, promotion cost, management fund, facility/equipment reinvestment, etc.) is an important property. Specially, it was shown that consistency with initial foundation cost and self-capital is the most important factor for preliminary founder.

An Analysis of Value and Personality for the Crippled Person's Psychological Rehabilitation (지체장애인의 심리적 재활을 위한 성격 및 가치관 분석)

  • Eum Ik-Gon;Kim Kyu-Soo
    • The Journal of Korean Physical Therapy
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    • v.4 no.1
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    • pp.79-93
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    • 1992
  • This study is search for analyzed the primary factor of psychological characters of crippled person toward psychological rehabilitation that is the most foundmental to all rehabilitation for a crippled person. The research is, make a comparative analyze to personality character, value character, and motion, and then examined the relation of among then, by applies to high school's crippled students. First. in the personality character aspect, a group of crippled student's is shown that the factor of family relations is lack harmony than normal group, that is, shown up that a parents and family members is oversensitiveness to crippled person, So sometimes they overprotectiveness, unconcered, and not accept it is. Also, in the factor of confrontability aspect, a group of crippled person's average is shown to high as compared with normal group, and then, it shown that they are irresponsible, have a weak self-control, and show a marked trend toward self-control. This is means that crippled person have scruples about psychological and social adaptation. But friendship, adaptability, cheefulness. and emotonal stability is shown no difference with normal person. Accordingly, in the personality aspect, the falter of family-relation and confrontability can be know that the object of psychological rehabilitation. Second, in the sence of value aspect, crippled students is show that the average score had higher than normal group toward the factor of variety, therefor we can know that they have purpose to more pursur of variety in the living. This is consideration that a raise from the limited of social contact chance and badly informed and experience. Also, the factor of purpose-intention is shown that crippled students had low non than normal group, then, that means that they have a weak will toward cope with various problems in daily living. Crippled student is, in contrast to lacked fixed purpose with self-living, and also insufficient tring to accomplish their objects. Third, crippled students motion shown that related to low level of personality character and a sence of value factor. Daily living activity is show that related to the factors of confrontability and cheerfulness. This means that rehabilitation service given a change to confrontability and cheerfulness that can be effect is related. And the activity of home is related with confrontability, psychological rehabilitation for the change of activity is can say that it should be contribute to strengthen toward responsibility and self-control from self-central to intention at rho others. Fourth, the relation between an motion and a value of crippled student is shown low level of regulations that can be ignore. In sum, in the rehabilitation of crippled person, hereafter, a study subject is if which search to character factor and to find out effect inter-factors within the the factor of psychological rehabilitation as medical, occupational, social rehabilitation, then probably more effective development toward rehabilitation programs. Conseguently, hereafter for the crippled person's rehabilitaton, the study should be rquirement for establish a character and factors each filed of rehabilitation. The study sibject toward crippled person's rehabilitation for the fature is search for character factor toward medical. occupational, and social rehabilitation. and find out inter-relation among then like as search of this study for psychological rehabilitation. For the rehabilitation of crippled person, if is not preceding of study like this, it ought to be difficult to creation service as well as development to effective program.

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Geochemistry of Ogbang Tungsten Deposits, Southern Korea (옥방중석광상(玉房重石鑛床)의 지구화학(地球化學))

  • Kim, Sabng Yup
    • Economic and Environmental Geology
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    • v.19 no.spc
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    • pp.53-71
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    • 1986
  • Detailed studies of regional geology and geochemistry of the tungsten mineralisation of Ogbang mine were carried out; in particular geochemical trends of major and trace elements of different lithological units, in comparison with those of the Sangdong area, together with igneous plutons in the area. The Ogbang deposit is in a pegmatitic association localised only in amphibolites whilst pegmatites in adjacent schists and gneisses are barren. The tungsten is geochemically accompanied by increase of $K_2O$, $Na_2O$ and Rb, and depletion of Sr. The trend of Rb/Sr ratio to the type of mineralisation, in commonly seen in the mineralised granites of the world, suggests that the tungsten in the Ogbang pegmatites was supplied by hydrothermal processes which at the same time caused Rb enrichment and Sr depletion. These trend could be of use in the search for new ore bodies in common with those of mineralised granitic or pegmatitic host rocks. There is no evidence that the granites in the area have any genetic influence spacially and temporarily on the initial scheelite formation.

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Relationship between University Student's attributional-style and learning Adaptation Considered in Department Selection (대학생들의 귀인성향과 학과 선택 시 우선고려사항에 따른 학과적응에 미치는 요인)

  • Kim, Gi-Ug
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.13 no.2
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    • pp.694-700
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    • 2012
  • The purpose of this study is to analyze the factor giving effect to department selection, learning adaptation and attributional-style after entering school by selecting university students as targets and help high school students who will graduate soon and university students select department and direction. Those were analyzed by using 287 questionnaire data from June 1 to June 30, 2011. The study result revealed that 64.5% of students considered 'popularity and employment prospect' first when they select department. Generally, it was researched that when selecting department, 68.8% of women and 78.7% of health major considered 'popularity and employment prospect'(P<0.05, P<0.01). For learning adaptation and attribution trend of each major, health major showed that learning adaptation was high when motif was high and application score was high and for the relationship with attributional-style, health major showed higher internal attributional-style, showing significant difference(P<0.05). When synthesizing the results above, it is necessary to develop and use the program that can develop internal attribution trend of students on the basis of attributional-style. For planned and careful selection, it is necessary to perform synthetic consulting through direction search program that considers entrance period of middle school or high school, general affairs of university or direction guide to increase department or direction adaptation in the future.

Research trend analysis on psychomotricity based on Social Service -A Review of Research In Korea from 2013 to 2017 - (사회서비스를 기반으로 한 심리운동 연구동향 분석 -2013년에서 2017년까지의 국내연구 중심으로-)

  • Ryu, Jin-Ho;Suh, Youn-Tae
    • Journal of Digital Convergence
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    • v.15 no.8
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    • pp.25-32
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    • 2017
  • This study analyzes diverse research studies on psychomotricity as convergence of psychological and physical exercises and aims to identify challenges and provide solutions for more extensive future research. The study collected 50 papers published in Korea from 2013 to March 2017 through paper search systems and analyzed the distribution of the works by types and research subjects, and types of research design, types of dependent variables and the number of interventions involved. By research design, it was found that most number of papers were based on single-subject research, followed by quantitative research. Motor development appeared the most as a dependent variable, followed by sociality and emotional behavior. Most number of studies involved 21-30 times of interventions. The changes in the research results were analyzed in the order of sociality, motor development, and behavior change. Future psychomotricity studies need to expand study subjects and diversify research methods and variables, with active follow-up studies contributing to social service by providing comprehensive solutions.

Trend on the Recycling Technologies for Waste Magnesium by the Patent and Paper Analysis (특허(特許)와 논문(論文)으로 본 폐(廢)마그네슘 재활용(再活用) 기술(技術) 동향(動向))

  • Moon, Byoung-Gi;You, Bong-Sun;Cho, Young-Ju;Cho, Bong-Gyoo
    • Resources Recycling
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    • v.22 no.3
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    • pp.73-80
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    • 2013
  • Metal prices are rapidly rising due to increasing demand of metals and limited available resources according to the industrial requirement. As a result, securing a stable supply of these metal resources has been recognized as a core element of national competitiveness and sustained economic growth. In the case of magnesium and its alloys which are entirely depending on import, low-grade magnesium scraps from end-of-life vehicles and 3C(Camera, Computer, Communication) parts and magnesium wastes such as sludge and dross generated during melting process are hardly recycled. Accordingly, the development and commercialization of recycling technology of low-grade magnesium scrap is desperately needed to improve efficiency of resource circulation and to establish the required proprietary of resource metal supply and demand. In this study, papers and patents on recycling technologies of waste magnesium were analyzed. The range of search was limited in the open patents of USA (US), European Union (EP), Japan (JP), Korea (KR) and SCI journals from 1974 to 2012. Patents and journals were collected using key-words searching and filtered by filtering criteria. The trends of the patents and journals was analyzed by the years, countries, companies, and technologies.