• Title/Summary/Keyword: 3D-GrF

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Manufactures of dental casting Co-Cr-Mo based alloys in addition to Sn, Cu and analysis of infrared thermal image for melting process of its alloys (Sn 및 Cu를 첨가한 치과 주조용 Co-Cr-Mo계 합금제조 및 용해과정 분석)

  • Kang, Hoo-Won;Park, Young-Sik;Hwang, In;Lee, Chang-Ho;Heo, Yong;Won, Yong-Gwan
    • Journal of Technologic Dentistry
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    • v.36 no.3
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    • pp.141-147
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    • 2014
  • Purpose: Dental casting #Gr I (Co-25Cr-5Mo-3Sn-1Mn-1Si), #Gr II (Co-25Cr-5Mo-5Cu-1Mn -1Si) and #Gr III (Co-25Cr-5Mo-3Sn-5Cu-1Mn-1Si) master alloys of granule type were manufactured the same as manufacturing processes for dental casting Ni-Cr and Co-Cr-Mo based alloys of ingot type. These alloys were analyzed melting processes with heating time of high frequency induction centrifugal casting machine using infrared thermal image analyzer. Methods: These alloys were manufactured such as; alloy design, the first master alloy manufatured using vacuum arc casting machine, melting metal setting in crucible, melting in VIM, pouring in the mold of bar type, cutting the gate and runner bar and polishing. These alloys were put about 30g/charge in the ceramic crucible of high frequency induction centrifugal casting machine and heat, Infrared thermal image analyzer indicated alloys in the crucible were set and operated. Results: The melting temperatures of these alloys measuring infrared thermal image analyzer were decreased in comparison with remanium$^{(R)}$ GM 800+, vera PDI$^{TM}$, Biosil$^{(R)}$ f, WISIL$^{(R)}$ M type V, Ticonium 2000 alloys of ingot type and vera PDS$^{TM}$(Aabadent, USA), Regalloy alloys of shot type. Conclusion: Co-Cr-Mo based alloy in addition to Sn(#Gr I alloy) were decreased the melting temperature with heating time of high frequency induction centrifugal casting machine using infrared thermal image analyzer.

Zum Sinn und den internen Prozessen der hochdeutschen Lautverschiebung (<고지독어 음운추이>의 의의와 추이과정)

  • Song Wan-Yong
    • Koreanishche Zeitschrift fur Deutsche Sprachwissenschaft
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    • v.3
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    • pp.121-150
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    • 2001
  • Da die hd. LV in einem Kausalzusammenhang verlaufen sein musste, ist sie im weiteren Sinne zu verstehen. Das meint: Der Wandel P>d muss auch in diese Kategorie $geh\"{o}ren$. $F\"{u}r$ die sinnvolle Deutung des hd. LV $w\"{a}re$ sehr aufschlussreich, die Lautsysteme der beiden Sprachen miteinander zu kontrastieren: Voralt­hochdeutsch(mit LV) und $Voraltfr\"{a}nkisch(ohne\;LV)$. Dabei $k\"{o}nnten$ wir sehr gute $Gr\"{u}nde$ entdecken, wieso die beiden Sprachen auf denselben Reiz der hd. LV ganz unterschiedlich reagieren. Beim Lautwandel $ver\"{a}ndern$ sich in der Tat nicht einzelne Laute, sondern korrelierte Laute parallel. Nach der sog. Reihenschrittheorie $k\"{o}nnen$ wir theoretisch rekonstruieren, welche allophonische Zwischenstufen die hd. LV voraussetzte.

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Development of 3D Crop Segmentation Model in Open-field Based on Supervised Machine Learning Algorithm (지도학습 알고리즘 기반 3D 노지 작물 구분 모델 개발)

  • Jeong, Young-Joon;Lee, Jong-Hyuk;Lee, Sang-Ik;Oh, Bu-Yeong;Ahmed, Fawzy;Seo, Byung-Hun;Kim, Dong-Su;Seo, Ye-Jin;Choi, Won
    • Journal of The Korean Society of Agricultural Engineers
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    • v.64 no.1
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    • pp.15-26
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    • 2022
  • 3D open-field farm model developed from UAV (Unmanned Aerial Vehicle) data could make crop monitoring easier, also could be an important dataset for various fields like remote sensing or precision agriculture. It is essential to separate crops from the non-crop area because labeling in a manual way is extremely laborious and not appropriate for continuous monitoring. We, therefore, made a 3D open-field farm model based on UAV images and developed a crop segmentation model using a supervised machine learning algorithm. We compared performances from various models using different data features like color or geographic coordinates, and two supervised learning algorithms which are SVM (Support Vector Machine) and KNN (K-Nearest Neighbors). The best approach was trained with 2-dimensional data, ExGR (Excess of Green minus Excess of Red) and z coordinate value, using KNN algorithm, whose accuracy, precision, recall, F1 score was 97.85, 96.51, 88.54, 92.35% respectively. Also, we compared our model performance with similar previous work. Our approach showed slightly better accuracy, and it detected the actual crop better than the previous approach, while it also classified actual non-crop points (e.g. weeds) as crops.

Preparation of V2O5-Graphene Composites using Aerosol Process for Supercapacitors Application (에어로졸 공정을 이용한 오산화바나듐(V2O5)-그래핀 복합체 제조 및 슈퍼커패시터 응용)

  • Lee, Chongmin;Jang, Hee Dong
    • Particle and aerosol research
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    • v.16 no.4
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    • pp.95-105
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    • 2020
  • Vanadium Pentoxide (V2O5) has been emerged as alternative electrode materials for supercapacitors due to their low cost, natural abundance, and environmental friendliness. Graphene (GR) loaded with V2O5 can exhibit enhanced specific capacitance. In this study, we present three-dimensional (3D) crumpled graphene (CGR) decorated with V2O5. The V2O5-graphene composites were synthesized from a colloidal mixture of graphene oxide (GO) and Ammonium metavanadate (NH4VO3), via aerosol spray drying and post heat treatment process. The average size of composite was ranged from 1.82 to 4.6 ㎛. Morphology of the composite changed from a crumpled paper ball to spherical ball having relatively smooth surface as the content of V2O5 increased in the composites. The electrochemical performance of the V2O5-graphene composites was examined. The V2O5-graphene composite electrode showed the specific capacitance of 312 F/g. In addition, the device possessed acceptable cyclic stability, with 84% after 2000 cycles at 2 A/g. These outstanding properties are expected to make the composites prepared in this study as promising electrode materials for supercapacitor applications.

Satzmodelle im Koreanischen und Deutschen im Hinblick auf ihre didaktische Verwertbarkeit ($\cdot$독 문형의 비료설정 시론)

  • Min Chun-Gi
    • Koreanishche Zeitschrift fur Deutsche Sprachwissenschaft
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    • v.7
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    • pp.85-104
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    • 2003
  • In der vorliegenden Arbeit werden die deutschen Satzmodelle $f\"{u}r$ Zwecke des DaF-Unterrichts in Korea untersucht. Dabei gehen wir davon aus, dass man die deutschen Satzmodelle vergleichend mit den koreanischen neu aufbauen sollte, um sie im Deutschunterricht fur Koraner recht benutzen zu konnen. Dafur haben wir hier zunachst untersucht, wie man die koreanischen Satzmodelle im Hinblick auf den didaktischen Zweck modifizieren muss. Unter $Ber\"{u}cksichtigung$ des dabei erzielten Ergebnisses wurden $anschlie{\ss}end$end die deutschen Satzmodelle rekonstruiert. Im Koreanischen wurden die Satzmodelle ab Ende der 1960er Jahre verschiedenartig untersucht. Zwar gibt es bisher noch keine Arbeit, die Ergebnisse dieser Forschungen zusammenfasst, dennoch versuchen wir hier aus einigen bisherigen Untersuchungen einen begrenzten Rahmen von koreanischen Satzmodellen herauszufinden. Als Resultat haben wir funf grundlegende Satzmolle hergestellt: (1) Subjekt + $Pr\"{a}dikat$, (2) Subjekt + $Pr\"{a}dikativ$ + $Pr\"{a}dikat$, (3) Subjekt + Objektiv + $Pr\"{a}dikat$, (4) Subjekt + Adverbiale + $Pr\"{a}dikat$, (5) Subjekt + Obj. + Obj./$Pr\"{a}dikativ$/Advb. + $Pr\"{a}dikat$. Das Modell (1) $umfa{\ss}t$ drei $Pr\"{a}dikate$, die sich nach den Wortarten unterscheiden: (intransitives) Verb, Adjektiv und Substantiv. Auch beim Fall (5) $k\"{o}nnen$ drei verschiedene Untermodelle nach der $Kombinationsm\"{o}glichkeit$ auftreten: Sub + Obj. + $Pr\"{a}d$., Sub. + Obj. + $Pr\"{a}dikativ$ + $Pr\"{a}d$., Sub. + Obj. + Advb. + $Pr\"{a}d$. Auch im Deutschen kann man ahnlich wie im Koreanischen didaktisch geeignete Satzmodelle herausarbeiten. Auch dabei wurden bisherige Untersuchungen zu den deutschen Satzmodellen herangewgen. Zu der $d\"{a}fur$ $ausgew\"{a}hlten$ Terminologie $geh\"{o}ren$ Subjekt(S), $Pr\"{a}dikat(P)$, $Pr\"{a}dkativerganzung(PE)$, $Objekterg\"{a}nzung(OE)$, $Adverbialerg\"{a}nzung(AE)$. In der deutschen Sprache werden nach den $Valenzm\"{o}glich­keiten$ des $Pr\"{a}dikativteils$ folgende Modelle unterschieden: S + P, S + P + PE, S + P + OE, S + P + AE, S + P + OE + OE/PE/AE. Unter die OE werden okk. OE, dat. OE, $pr\"{a}d$. OE, refl. OE usw. subsumiert. Um die Stichhaltigkeit der in dieser Schrift neu festgestellten Satzmodelle zu $\"{u}berpr\"{u}fen$, sollten sie anhand eines Textkorpus heutiger Texte in weiteren Untersuchungen validiert werden. Ferner ist es zu empfehlen, die Anwendbarkeit der hier vorgestellten Satzrnodelle im Deutschunterricht $f\"{u}r$ Koreaner $gr\"{u}ndlich$ zu testen

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An Exploratory Study about the Importance of Selected Nursing Activities during the Puerperal Period, as Viewed by Women in the Puerperal Period and by Nurses Caring for Them (산모와 간호원이 본 선택된 산욕기 간호활동의 중요도에 관한 탐색적 연구)

  • 박주봉
    • Journal of Korean Academy of Nursing
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    • v.8 no.1
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    • pp.152-162
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    • 1978
  • The desire to maintain health is increasing, consequently the role of nursing which has as one chief aim the solving of man′s basic problems is more and more important. Today, in spite of a growing concern about the nursing activities which nurses provide for individual human having specific needs, clinically in fact, it is questionable that individual′s expectation of nursing activities agrees with nurse′s performance of nursing activities. In this study the importance and agreement of the importance of the nursing activities during the hospitalized puerperal period as viewed by women in the puerperal period and by nurses caring for them, were assessed. The present study was undertaken in an attempt to furnish the basic data for expediting the progress of research activities in this area and further to be helpful in planning maternity nursing practice. The study population defined and selected was nurses (13) caring for women in the puerperal period and doing duty on obstetric & gynecologic ward at Y. hospital, and the women in puerperal period (39) as sum of 3 women selected by each nurse during the period of May 13th-June 4th 1976. The study data was collected by the direct interview method based on the questionnaire which the investigator made out. The study result was analyzed by percentage, t - test. The findings can be summarized as follows: 1. General characteristics of nurses doing duty on puerperal ward: a. Nurses′average age was 24.8 years old. b. 84.6% had educational background of 4 years of college. c. 69.2% had a religion. d. 53.8% were married. e. 53.8% had clinical experience of 1 year -3 years. f, 61.5% did duty on puerperal ward during 1 year -3 years. g. 46.2% desired to do duty on obstetric ? gynecologic ward. 2. General characteristics of the women who were studied during their puerperal period: a. Women′s average age was 26.4 years old. b. 79.5% had educational background above high school. c. 56.4% had a religion. d. 84.6% had living standard above medium. e. 89.7% had no occupation. f, 53,8% had previous hospitalization experience. g. 56.4% had previous delivery experience. 3. Examining the importance of 39 nursing activities during puerperal period selected by investigator, studied group of women considered that the most important nursing activity was "Record precisely about condition, medical treatment and nursing activity results etc". Nurses considered that the most important nursing activity was "Notice whether having pain and care for that". Both groups considered that the least important nursing activity was "Talk with her about topics such as news, hobbies, other interests". 4. Examining the importance of nursing activities in 4 specific categories, studied group of women considered that the most important nursing activity in physical nursing category was "Be sure of safety measure to prevent accidents, injuries", and nurses considered that the most important nursing activity was "Make her sleep and rest sufficiently". Studied group of women considered that the most important nursing activity in psychological category was "Explain about medical treatment and nursing activity ahead of time so she knows what to expect" , and nurses considered that the most important nursing activity was "Explain about puerperal period so she understands". Studied group of women considered that the most important nursing activity in relation to medical care was "Record precisely about condition, medical treatment and nursing activity results etc.", and nurses considered that the most important nursing activity was "Observing, cleaning and protecting the perineum" Studied group of women considered that the most important nursing activity in nursing category in preparation for discharge was "Instruct about personnel hygiene during puerperal period", and nurses considered that the most important nursing activity was "Instruct self-care to protect the perineum". 5. The analysis of this study showed a significant amount of disagreement computed by subtracting the nurse′s score from the patient′s score. Studied group of women put greater importance on physical nursing category, psychological nursing category, nursing in relation to medical care, than the nurses. These results were statistically significant at 0.01 level.

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Studies on the Foliar Application of Urea as Nitrogen Source of Rice Plant Nutrition (요소엽면살포(尿素葉面撒布)에 따른 수도(水稻)의 질소영양(窒素營養)에 관(關)한 연구(硏究))

  • Cho, Seoung-Jin
    • Applied Biological Chemistry
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    • v.9
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    • pp.125-147
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    • 1968
  • This experiment was carried out as a part of the studies on reasonable application of nitrogen in rice plant to determine: (I) Nitrogen absorption. and rooting of rice seedlings as affected by urea foliar application at late seedling stage (II) Effect of leaf prunning and foliar application of urea at late heading stage on the maturation and yield of rice (III) Effect of foliar application of urea and its time during the stage of ear formation on yield of rice plant. Results obtained are summarized as follows. Exp.I: Nitrogen absorption and rooting of rice seedlings as affected be urea foliar application at late seedling stage. 1 : The foliar application of urea plots$(T_{1},T_2)$ snowed mare N-content than non-urea foliar application plot(T0) at lane seedling stage, being significant among treatments and foliar application of urea seemed more effective in increasing the N-content of seedlings. and promoted root settlement and early growth alter the transplanting. 2 : The carbon contents of the plants of $T_1$, and $T_2$ at late seedling stage increased than T0, and the carbon contents. of $T_1$ and $T_2$ plots became higher in amount in proportion to the nitrogen absorption as compared with those of $T_0$. 3 : C/N ratio appeared significant among soil application plots($N_1, \;N_2$) and foliar application of urea plots ($T_1$, $T_2$ and $T_0$). C/N ratio was lower in case of increased amount of nitrogen. The higher contents of nitrogen and carbon and lower C/N ratio resulted in the increment of root numbers and root lengths. Exp.II: Effect of leaf prunning and foliar application of urea at late heading stage on the maturation and yield of rice. 1 : There was a highly significant decrease in the maturing rate by severe leaf prunning. In the mean time, significant increase in maturing rate was observed with urea foliar application and it was found the more frequent application the more effective for higher maturing rate with a moderate significance. A correlationship between the level of prunning and maturing rate was enumerated to 0.961 of correlation coefficient, which indicated an increased maturing rate by the increased number of remaining leaves. 2 : The 1.000 grain weight, grain weight and hulled rice yield increased by leaf prunning in order (plot a$A_1$, $A_3$, $A_2$ and $A_0$ were 89.8%, 89.4%, 87.8% and 87.5% respectively, showing the highest of rate in $A_1$ and $A_3$ in methods of ear fertilization and being highly significant between its treatment. 3 : 1000 grain weights were highly significant between time of application, showing a tendency of increase of weights with the time lagging until days before earings as that of maturing rates. High significance was recognized between methods of ear fertilization, showing the highest in $A_2$ 23.18 gr. 4 : Yields per $3.3m^2$ were not significant between time of ear fertilization, whereas were highly significant between methods of ear fertilization. Those of $A_1$, $A_3$, $A_2$ and $A_0$ were 1.486 kg, 1.491 kg, 1.381 kg and 1.328 kg, respectively, showing the highest in $A_1$ and $A_3$. 5 : Hulling ratios showed significant different between time of ear fertilization, showing the highest in $T_2$, whereas those of methods of ear fertilization were highly significant between its treatment, Those of $A_1$, $A_3$, $A_2$ and $A_0$ were 84.72%, 84.06%, 83.29%, and 82.56% respectively, showing the highest m $A_2$ and $A_3$ among others. 6 : Yields of hulled rice per $3.3m^2$ showed significant different between time of ear fertilization, showing the highest in $T_1$ 1.192 kg. Whereas, those were highly significant between methods of ear fertilization. Those of $A_1$, $A_3$, $A_2$ and $A_0$ were 1.259 kg, 1.254 kg, 1.149 kg and 1.095 kg, respectively, showing the highest in $A_1$ and $A_2$. 7 : Contents of nitrogen on rice plant increased in case of nitrogen application as ear fertilizer and showed that the case of urea foliar application was more effective than that of soil application, showing the increased nitrogen content of rice plant was accompanied by carbon content.

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