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Estimating Evapotranspiration of Rice Crop Using Neural Networks -Application of Back-propagation and Counter-propagation Algorithm- (신경회로망을 이용한 수도 증발산량 예측 -백프로파게이션과 카운터프로파게이션 알고리즘의 적용-)

  • 이남호;정하우
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.36 no.2
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    • pp.88-95
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    • 1994
  • This paper is to evaluate the applicability of neural networks to the estimation of evapotranspiration. Two neural networks were developed to forecast daily evapotranspiration of the rice crop with back-propagation and counter-propagation algorithm. The neural network trained by back-propagation algorithm with delta learning rule is a three-layer network with input, hidden, and output layers. The other network with counter-propagation algorithm is a four-layer network with input, normalizing, competitive, and output layers. Training neural networks was conducted using daily actual evapotranspiration of rice crop and daily climatic data such as mean temperature, sunshine hours, solar radiation, relative humidity, and pan evaporation. During the training, neural network parameters were calibrated. The trained networks were applied to a set of field data not used in the training. The created response of the back-propagation network was in good agreement with desired values and showed better performances than the counter-propagation network did. Evaluating the neural network performance indicates that the back-propagation neural network may be applied to the estimation of evapotranspiration of the rice crop. This study does not provide with a conclusive statement as to the ability of a neural network to evapotranspiration estimating. More detailed study is required for better understanding and evaluating the behavior of neural networks.

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A Study to Standardize the Child Development Review in Korea (영.유아발달선별검사(Child Development Review)의 한국에서의 표준화 연구)

  • Shin, Hee-Sun;Kim, Jeong-Mee
    • Child Health Nursing Research
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    • v.12 no.3
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    • pp.333-340
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    • 2006
  • Purpose: This study was to restandardize the Child Development Review (CDR) which was developed by Dr. Ireton and based on Child Development Inventory (CDI). Method: The participants were 1143 children who were aged 12months to 6.3years old and parents. They were the sample for standardization study of CDI. The age level assigned to each item of Korean version of CDI were assessed. The reliability and validity was analyzed by reliability coefficient and concurrent validity analysis. Result: The item set was revised by the age level of each item at which at least 75 percent of parents answered YES to the statement. The child development chart was composed of 100 item which include social, self-help, gross motor, fine motor, and language sector. The internal consistency coefficient of the instrument was .93. The concurrent validity with Korean Denver II was good. Conclusions: The Korean version of CDR showed good reliability and validity. It could be utilized for developmental screening at pediatric clinic and child care center.

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A SYSTEMATIC IMPLANT TREATMENT PLANNING AND CONCEPTS FOR CLINICAL SUCCESS (체계적인 임플랜트 치료 계획의 수립과 성공적인 임상을 위한 컨셉트)

  • Jeong Seung-Mi;Kim Se-Hoon;Yoo Je-Hyeon
    • The Journal of Korean Academy of Prosthodontics
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    • v.44 no.2
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    • pp.243-249
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    • 2006
  • Statement of problem: It is important to have a correct presurgical treatment plan before any implant surgery. It must contain substantial information about the patient concerned. However, the standard classification only notifies the dentist about various structural, pathological and physiological dimensions Due to diverse structure of the jaw bone, current standard classification does not tell spatial dimensions of the available bone for implant insertion sites. Purpose of study: The purpose of this study is to report the establishment of the systematic implant treatment plan and its clinical treatment using $Implan^(R)$ program which is based on ASCIi-classification that is available for future diagnosis and scale of treatment and for systematic implant insertion. Results: By assisting the systemic measurement of the available alveolus dimension during implant surgery, it was easy to set initial implant treatment plan. Conclusion: Using $Implan^(R)$ program which is based on ASCIi-classification system that allows the establishment of systemic implant treatment plan and successful clinical performance, it was possible to establish the founding or initial implant treatment plan , the acquisition of information, and the systematization of documentation.

A Study on the Recent Changes of Level of Club Cover in P & I Insurance (P & I 보험의 보상한도에 관한 고찰 - 최근의 변화 및 쟁점을 중심으로 -)

  • Shin, Gun-Hoon
    • THE INTERNATIONAL COMMERCE & LAW REVIEW
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    • v.22
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    • pp.201-226
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    • 2004
  • P & I Clubs are mutual and non-profit making insurers which offer shipowners cover for the contractual and third-party liabilities. Whereas most shipowners obtain P & I insurance to cover for their legal liabilities, they also obtain hull insurance to cover against damages to the hull of their vessels from commercial hull insurers. P & I insurance was distinguished from hull insurance in respect that it offered non-limited cover to shipowner member, but there was a serious debate between P & I Clubs in respect of the non-limited cover. A compromise by International Group of P & I Clubs eventually emerged under which, with effect from 20 February 1997, a financial cap was placed on the obligation of each shipowner to pay catasrophe calls to his club(20% of each ship's property limitation fund under 1976 Limitation Convention). Nevertheless many shipowners felt that this new cap on their potential catastrophe call had been set still too high, while others resisted any reduction in the figure established by the compromise. In the Meantime, the European Commission issued a Statement of Objections in June 1997, in which it indicated its objections with a compulsory single limit common th all the Group clubs as high as the 1997 compromise. Eventually the board of all the Group clubs decided that the figure of 20% of the Limitation Convention per ship property funds should be dropped down to 2.5% from 20 February 1999.

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On-Line Topic Segmentation Using Convolutional Neural Networks (합성곱 신경망을 이용한 On-Line 주제 분리)

  • Lee, Gyoung Ho;Lee, Kong Joo
    • KIPS Transactions on Software and Data Engineering
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    • v.5 no.11
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    • pp.585-592
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    • 2016
  • A topic segmentation module is to divide statements or conversations into certain topic units. Until now, topic segmentation has progressed in the direction of finding an optimized set of segments for a whole document, considering it all together. However, some applications need topic segmentation for a part of document which is not finished yet. In this paper, we propose a model to perform topic segmentation during the progress of the statement with a supervised learning model that uses a convolution neural network. In order to show the effectiveness of our model, we perform experiments of topic segmentation both on-line status and off-line status using C99 algorithm. We can see that our model achieves 17.8 and 11.95 of Pk score, respectively.

Theme and Form in T. S. Elopt's "The Waste Land" (T. S. Eliot의 "The Waste Land"에 나타난 주제와 형식)

  • Yang, Hyun-Chul
    • English Language & Literature Teaching
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    • no.4
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    • pp.249-267
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    • 1998
  • "The Waste Land" is Eliot's best known poem. It was first published in 1922 and became a famous poem in modem poetry by the 1940's. The poem is a statement of his personal experience with spiritual crisis, this simple outline is complicated and universalized by being set within the structure of 'the Fisher King legend'. The fisher King legend was studied by Miss Weston in From Ritual to Romance and Sir James Frazer in The Goldon Bough which traced the vegetation myths. It explained the cycle of the seasons in relation to the death and rebirth of a god. The god died in the winter with the death of the vegetation and was reborn in the spring with the rebirth of the vegetation. Sir James Frazer reaced these ancient rituals within the Christian world. He indicated that the death and rebirth of Christ falls within the pattern of this ancient ritual. Also Miss Weston transformed that ancient ritual into Christian terms, and connected it with the Quest for the Holy Grail. Eliot used not only the title, but the plan and a good of the important symbolism of the poem from these two books. "The Waste Land" is a difficult one because of the numerous interruptions in the narrative. On the superficial level, the story covers a 12-hour period in a day. It is also in "the stream of consciousness." It might be called the internal monologue; that is, "the free association of ideas in the mind of the narrator," Eliot experiments with both the idea of time and with the stream of consciousness, He employs a number of quotations and allusion from the Classic literature. So, his technique in "The Waste Land" consists of the juxtaposition of the present with mythcism and religious symbolism derived from the past. The structure of the poem is built out of the contrasts in time. The poem illustrates his conception of the past as an active part of the present. "The Waste Land" has "a symphonic structure" composed of five parts, which are linked by the repeated themes. The theme is the death and salvation of the Waste Land. It is drawn from the Fisher King myths. Moreover, he has absorbed into the structure of this poem the language, phrases, and associations of other writers. It gave the poem the universality both of theme and of pattern. Also, his intricate and fine techniques added the universality to the poet's personal material. At last, the verse pattern of the poem follow the same basic structure as the thematic patterns. Again in symphonic style, the verse varies from section to section. The interruption of real time is associated with the flow of consciousness. Though the poem is a complex structure, there are the interweavings of a great deal of ideas into a simple, brief statement. By these poetic techniques the poem manages to have good harmony and unity between the thematic pattern and narrative structure. "The Waste Land" therefore, became the greatest poem in the 20th century modern world.

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On the Epistemology of the National Informatization Policy - A Critical Review of the $5^{th}$ National Informatization Policy Plan (2013-2017) - (국가정보화 정책 인식구조에 대한 고찰 - 박근혜 정부 제 5차 국가정보화 기본계획 (2013-2017) 중심으로 -)

  • Juhn, Sung Hyun
    • Journal of Information Technology and Architecture
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    • v.11 no.4
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    • pp.393-407
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    • 2014
  • The Government Informatization Policy Plan represents the government's technology policy vision and a set of ICT policy agenda and initiatives for the tenure of the government. The Policy Plan, however, normally produces an excess of disconcerted and superfluous ICT policy proposals from various policy units in the government. To cope with the superficiality of the ICT policy set in the Policy Plan, this paper proposes an analysis of the epistemology of the policy set. A policy is constructed as an argument and the structure of the policy argument is analysed using a model of argumentation. The findings show that the present informatization policy is driven by three epistemological motives - the production, consumption, and performance of the ICT Technology. The various assumptions and premises that underlie and direct the generation of ICT policy arguments with different motives are idenfied and then are exposed to strong rebuttal arguments to evaluate their epistemological tenability. The policy implications of the epistemological analysis are discussed in the end.

THE EFFECT OF GOLD ELECTROFORMING PROCEDURE ON GOLD-SILVER-PALLADIUM ALLOY

  • Hwang, Bo-Yeon;Kim, Chang-Whe;Lim, Young-Jun;Kim, Myung-Joo
    • The Journal of Korean Academy of Prosthodontics
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    • v.45 no.3
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    • pp.303-309
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    • 2007
  • Statement of problem. The effect of gold electroforming on gold alloy was not studied. Purpose. This in vitro study investigate the effect of gold electroforming on gold-silver-palladium alloy. Material and methods. Three pieces of gold strips had undergone the electroforming procedures on one side and then half of the side again electroformed. The set mode for this study was program 1 ($200{\mu}m$). And the processing time was 15min (1/20 time to form $200{\mu}m$ coping). The confocal laser scanning microscope (PASCAL 5, Carl Zeiss, Bernried, Germany) was used to measure the thickness of the pure gold layer electroformed on the gold strips. Half of the gold strip was coated two times with electroformed gold, and the other half one time. The data from the cone focal laser system was processed to get the vertical profile of the strips and the difference of the vertical height between the double coated and single coated layer was regarded as the thickness of the gold coating. The layer thickness value to built 3D image of the cone-focal laser was set $0.5{\mu}m$. Next to the measurement of the thickness of the coating, the Vicker's hardness test was done. It was performed on the double coated surface, single coated surface and non-coated surface (back side) three times each. Results. The mean thickness value gained from gold electroforming technique was measured to be $22{\mu}m$ for sample 1, $23{\mu}m$ for sample 2, $21{\mu}m$ for sample 3. In the same condition of time, power and the amount of electrolyte, the data showed no difference between samples. According to the results of variance analysis, the differences among the variations in number of coating were statistically insignificant (p>0.05), meaning that the two times of gold electroforming coating did not change the hardness of gold-silver-palladium alloy. Conclusion. The test of thickness of gold coating proved the coherency of the gold electroforming procedure, in other words, when the power, the exposed surface area, processing time and the amount of electrolytes were set same, the same thickness of gold would be coated on. The hardness test showed that the electroformed gold coating did not change the hardness of the gold-silver-palladium alloy when it is coated not more than $45{\mu}m$.

Evidence and suggestions for establishing vitamin D intake standards in Koreans for the prevention of chronic diseases

  • Kim, Jung Hyun;Park, Hyoung Su;Pae, Munkyong;Park, Kyung Hee;Kwon, Oran
    • Nutrition Research and Practice
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    • v.16 no.sup1
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    • pp.57-69
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    • 2022
  • BACKGROUND/OBJECTIVES: Vitamin D is produced in the skin during sun exposure and is also ingested from foods. The role of vitamin D needs to be considered in the prevention and management of various diseases. Moreover, since the majority of Koreans spend their days indoors, becoming susceptible to the risk of vitamin D deficiency. The current study aims to prepare a basis for determining dietary reference intake of vitamin D in Korea, by reviewing the evidence against various diseases and risks. MATERIALS/METHODS: Literature published in Korea and other countries between 2014 and 2018 was prioritized based on their study design and other criteria, and evaluated using the RoB 2.0 assessment form and United States Department of Agriculture Nutrition Evidence Library Conclusion Statement Evaluation Criteria. RESULTS: Of the 1,709 studies, 128 studies were included in the final systematic analysis after screening. To set the dietary reference intakes of vitamin D based on the selected articles, blood 25(OH)D levels and indicators of bone health were used collectively. Blood vitamin D levels and ultraviolet (UV) exposure time derived from the Korean National Health and Nutrition Examination Survey were analyzed to establish the dietary reference intakes of vitamin D for each stage of the life cycle. The adequate intake levels of vitamin D, according to age and gender, were determined to be in the range of 5-15 ㎍/day, and the tolerable upper intake level was established at 25-100 ㎍/day. CONCLUSIONS: The most important variable for vitamin D nutrition is lifestyle. A balanced diet comprising foods with high contents of vitamin D is important, as is vitamin D synthesis after UV exposure. The adequate intake level of vitamin D mentioned in the 2015 Dietary Reference Intakes for Korean (KDRI) remained unchanged in the 2020 KDRI for the management of vitamin D nutrition in Koreans.

Middle East Consensus Statement on the Prevention, Diagnosis, and Management of Cow's Milk Protein Allergy

  • Vandenplas, Yvan;Abuabat, Ahmed;Al-Hammadi, Suleiman;Aly, Gamal Samy;Miqdady, Mohamad S.;Shaaban, Sanaa Youssef;Torbey, Paul-Henri
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • v.17 no.2
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    • pp.61-73
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    • 2014
  • Presented are guidelines for the prevention, diagnosis, and treatment of cow's milk protein allergy (CMPA) which is the most common food allergy in infants. It manifests through a variety of symptoms that place a burden on both the infant and their caregivers. The guidelines were formulated by evaluation of existing evidence-based guidelines, literature evidence and expert clinical experience. The guidelines set out practical recommendations and include algorithms for the prevention and treatment of CMPA. For infants at risk of allergy, appropriate prevention diets are suggested. Breastfeeding is the best method for prevention; however, a partially hydrolyzed formula should be used in infants unable to be breastfed. In infants with suspected CMPA, guidelines are presented for the appropriate diagnostic workup and subsequent appropriate elimination diet for treatment. Exclusive breastfeeding and maternal dietary allergen avoidance are the best treatment. In infants not exclusively breastfed, an extensively hydrolyzed formula should be used with amino acid formula recommended if the symptoms are life-threatening or do not resolve after extensively hydrolyzed formula. Adherence to these guidelines should assist healthcare practitioners in optimizing their approach to the management of CMPA and decrease the burden on infants and their caregivers.