• Journal of Animal Science and Technology
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• 제63권3호
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• pp.475-490
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• 2021

An experiment was conducted to determine the effects of two levels of rumen undegradable protein (RUP) without or with whole or extruded flaxseed on milk yield, milk component, milk fatty acids (FAs) profile and plasma metabolites in transition ewes. Three weeks before and after lambing, seventy-two Baluchi ewes were used in a completely randomized design with a 3 × 2 factorial arrangement of treatments. The treatments contained 1) no flaxseed + 20% RUP (no flaxseed, low RUP [NFLR]); 2) no flaxseed + 40% RUP (no flaxseed, high RUP [NFHR]); 3) 10% whole flaxseed + 20% RUP (whole flaxseed, low RUP [WFLR]); 4) 10% whole flaxseed + 40% RUP (whole flaxseed, high RUP [WFHR]); 5) 10% extruded flaxseed + 20% RUP (extruded flaxseed, low RUP [EFLR]), and 6) 10% extruded flaxseed + 40% RUP (extruded flaxseed, high RUP [EFHR]). Ewes fed 10% extruded flaxseed exhibited higher (p < 0.001) dry matter intake (DMI) and colostrum yield (p < 0.1) compared to other treatments. Two types of flaxseed and RUP levels had no significant effect on milk yield, but milk fat and protein contents decreased and increased in diets containing 40% RUP, respectively. Ewes fed extruded flaxseed produced milk with lower concentrations of saturated fatty acids (SFA) and higher α-linolenic and linoleic acids and also polyunsaturated fatty acids (PUFA) compared to other groups (p < 0.05). During post-lambing, the ewes fed diets containing flaxseed exhibited higher concentration of serum non-esterified FAs (NEFA) compared to diets without flaxseed (p < 0.01). The concentration of serum β-hydroxybutyric acid (BHBA) decreased in the diets containing flaxseed types at pre-lambing, but increased in diets containing extruded flaxseed at post-lambing (p < 0.01). The serum glucose concentration of ewes (pre and post-lambing) which consumed diets containing extruded flaxseed or 40% RUP increased, but blood urea concentration was elevated following supplementation of diet with whole flaxseed or 40% RUP (p < 0.001). In conclusion, utilization of 10% extruded flaxseed in the diets of transition ewes had positive effects on animal performance with favorable changes in milk FAs profile. However, there is no considerable advantage to supply more than 20% RUP level in the diet of transition dairy sheep.

• 한국세라믹학회지
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• 제36권5호
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• pp.547-554
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• 1999

The self-reinforced Si3N4 ceramics were prepared by pressureless-sintering using ${\beta}$-Si3N4 whiskers as a seed. Effects of ${\beta}$-Si3N4 whiskers on microstructure and mechanical properties and the ${\alpha}$ to ${\beta}$ phase transition of Si3N4 were investigated. The self-reinforced Si3N4 ceramics were densified(relative density$\geq$98%) by pressureless-sintering (1800$^{\circ}C$ 2h) using 8mol% Y2O3 and 6mol% Al2O3 as sintering aids and 5 vol% ${\beta}$-Si3N4 whiskers within self-reinforced Si3N4 ceramic seemed to hinder the densification owing to their acicular shapes but accelerated the ${\alpha}$ to ${\beta}$ phase transition because they acted as pre-existing nuclei. It was found that the more ${\beta}$-Si3N4 nucei the faster ${\alpha}$ to ${\beta}$ phase transition.

• Macromolecular Research
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• 제10권6호
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• pp.311-317
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• 2002

The quantitative analysis of polymer micelles consisting of amphiphilic block copolymers was carried out by small-angle neutron scattering (SANS). The block copolymers, made of poly(2-ethoxyethyl vinyl ether-b-2-hydroxyethyl vinyl ether)(poly(EOVE-b-HOVE)), exhibited a sharp morphological transition from a homogeneous solution to a micelle structure with increasing temperature. This transition is accompanied by a formation of spherical domains of poly(EOVE) with a radius around 200 $\AA$. The variations of the size and its distribution of the domains were investigated as a function of polymer concentration and temperature. The validity of SANS analysis, including the wavelength- and incident-beam-smearing effects of the SANS instrument, was examined with a pre-calibrated polystyrene latex.

• Bulletin of the Korean Chemical Society
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• 제18권7호
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• pp.743-749
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• 1997

Local structure refinement of the BaFe1-xSnxO3-y system (x=0.00-0.50) has been carried out with Fe K-edge x-ray absorpion spectroscopic studies. It is found out that the Fe ions are placed in two different symmetric sites such as tetrahedral and octahedral sites in the compounds by comparison with Fe K-edge x-ray absorption near edge structure (XANES) spectrum of the γ-Fe2O3 compound as a reference. Small absorption peaks of dipole-forbiden transitions appear at a pre-edge region of 7111 eV due to the existence of Fe ions in the tetrahedral and octahedral sites. The peak intensity decreases with the substitution amount of Sn ion. Three different absorption peaks of 1s→4p dipole-allowed transition appear on the energy region between 7123 and 7131 eV. The peaks correspond to 1s→4p main transition of Fe ions in tetrahedral and octahedral sites and 1s→4p transition followed by the shakedown process of ligand to metal charge transfer. The bond distances between Fe ions in the tetrahedral site and nearest neighboring oxygen atom (Fe-4O), and those in octahedral site (Fe-6O) are determined with the extended x-ray absorption fine structure (EXAFS) analysis. Two different interatomic distances increase with the substitution amount of Sn ion and also the bond lengths of Fe-4O are shorter than those of Fe-6O in all compounds.

• 동남아시아연구
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• 제23권3호
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• pp.217-256
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• 2013

This study addresses the issue of the continuity in Indonesia's party system with respect to Islam, authoritarian legacy and income, using the urban-based individual face-to-face survey data. The existing studies focus on the historical continuity of the Indonesian party system between the 1955 and 1999 democratic elections. Yet, this study deals with the continuity and discontinuity between the pre-transitional 1997 election and the transitional 1999 election. It finds that the effect of Islam is largely independent of the democratic transition: Islam-oriented voters under the authoritarian rule tend to remain in the Islamic camp even during and after the democratic transition, while most of the secular voters prior to the democratic transition continue to shun any Islamic parties during the democratization. The effect of authoritarian legacy is also found to be meaningful, even if not as sticky as Islam. Finally, the variable of income is significant. Contrary to the popular belief, the PDIP is not a party of the urban poor but the PPP is the urban poor's favorite choice. This implies the linkage between poverty and political Islam.

• Molecules and Cells
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• 제38권7호
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• pp.651-656
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• 2015

Plant growth and development are coordinately orchestrated by environmental cues and phytohormones. Light acts as a key environmental factor for fundamental plant growth and physiology through photosensory phytochromes and underlying molecular mechanisms. Although phytochromes are known to possess serine/threonine protein kinase activities, whether they trigger a signal transduction pathway via an intracellular protein kinase network remains unknown. In analyses of mitogen-activated protein kinase kinase (MAPKK, also called MKK) mutants, the mkk3 mutant has shown both a hypersensitive response in plant hormone gibberellin (GA) and a less sensitive response in red light signaling. Surprisingly, light-induced MAPK activation in wild-type (WT) seedlings and constitutive MAPK phosphorylation in dark-grown mkk3 mutant seedlings have also been found, respectively. Therefore, this study suggests that MKK3 acts in negative regulation in darkness and in light-induced MAPK activation during dark-light transition.

• 정보보호학회논문지
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• 제10권3호
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• pp.29-36
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• 2000

It is very import role to increase communication quality that fast detection of random sequence synchronization fail in synchronous stream cipher system using initial synchronization mode. Generally it sends additional information to detect random sequency synchronization fail. But we can't transmit additional informations to decide synchronization fail in a system using RMVD to correct channel error. In this paper we propose a method to detect synchronization fail in the receiver even though a system using RMVD has no margin to send additional information, For detecting random sequency synchronization fail we decipher receiver data analyze probability of transition rate for pre-determined period and decide synchronization fail using calculated transition rate probability. This proposed method is fast very reliable and robust in noisy channel and is easily implemented with hardware.

• 간호행정학회지
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• 제4권1호
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• pp.129-150
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• 1998

The purpose of this study was to exame the effect of the planned indoctrination program on the role transition of new graduate nurses in one educational hospital located in Seoul. The planned in doctrination program was a 1-month program and consisted of 3 days induction and 22 days orientation- socialization. The simulated control group pretest-posttest research was designed for this study. One hundred and twenty subjects were selected from the new graduate nurses who were employed by the Seoul National Univerty Hospital. Sixty of them were assigned to the pretest, and the rest to the posttest. To collect the data on role transition, the researcher developed the instrument, measuring 3 differert areas : inducction, orientation, and socialization. The reliability of the instrument were induction area's Chronbach ${\alpha}$ .8291, orientation area's Chronbach ${\alpha}$ .9809, and soialization area's Chronbach ${\alpha}$ .8524. The data were collected from Aprial to October 1995 at three different times: (1) immediately before indoctrination program began, (2) immediately after the program ended, and (3) 2 months after the program ended. In addition to the self-report of the subjects, their superiors filled out the same instrument on role transition to compare the scores between the subjects and their superiors at 2 months after the program. T-test was utilized to test differences between the means of pre- and post-tests. The result of this study are as follows : 1. There was a significant difference in the mean scores between before and immediately after the indoctrination program (t=-12.65, P=.000). There were significant differences in all 3 areas of role transition. 2. There was a significant difference in the mean scores between immediately after and 2 months after the program (t=-2.91, P=.004), Among 3 areas of role transition, however, only in the orientation area was there significant difference (t=-3.26, P=.001). 3. There was no significant difference in total mean scores between subjects' self-report and their superiors' report 2 months after the program ended (t =.97, p= .335). Among 3 different areas, however, there was a significant difference in the induction area (t=2.41, P=.018). 4. There was significant difference in mean scores between the group Of 3-year diploma and 4-year bachelor's degree only at pretest (t=-2.56, P= .013), but not at two posttests (t=-1.08, P=.250: t=-.34, P=.733). In conclusion, the planned indoctrination program for new graduate nurses was proved to be effective on the role transition in the study. But the result in the study showed that the indoctrination program had not equal effect On 3 different areas of role transition. There were significant differences in the scores between after and 2 months after the program only in the orientation area. These suggest that indoctrination program should be developed more focusing on induction and socialization areas to help new graduate nurses have a high morale and enthusiasm for the organization. Also contineous program to facilitate induction and socialization might be necessary for them to have a successful role transition.

• 대한공업교육학회지
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• 제40권1호
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• pp.180-200
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• 2015

현재 로봇기술과 관련된 강의들은 수강생들의 다른 기초 지식 수준과 교수학습 방법에 관한 문제들을 가지고 있다. 이 연구는 이러한 문제점에 고려하여 성취과제분담 협동학습(STAD)의 모형을 로봇기술 입문 강의에 적용한 사례 연구이다. 이 강의에서 STAD학습 모형을 사용하여 다른 지식 수준을 가지고 있는 팀 구성원의 능력 향상에 초점을 두고 과제와 프로젝트와 같은 수업 활동을 통하여 서로 팀 구성원들이 협력하는데 관심을 가지게 된다. 이는 모든 구성원들이 팀 성과에 따라 같은 성적을 받게 되기 때문이다. STAD 학습의 성과는 로봇 기술과 관련된 기초 지식, 로봇 기술을 가르치기 위한 태도, 그리고 학습 영역에 대한 자신감과 교수 능력에 관하여 사전 평가와 사후 평가를 실시하였고 t 검정을 통하여 그 효과를 분석하였다. 이 연구의 참가자는 교사양성기관의 22명의 예비기술교사이다. 이 연구의 결과 로봇 기술과 관련된 기초 지식, 로봇 기술을 가르치기 위한 태도, 그리고 학습 영역에 대한 자신감과 교수 능력에 있어 향상된 성취를 보였다. STAD 학습은 특별한 상황에서 예비교사들에게 더 나은 학습 결과를 도출하기 위한 하나의 대안적인 방법이라 할 수 있다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2001년도 하계종합학술대회 논문집(3)
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• pp.141-144
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• 2001

In this paper, a new algorithm for extracting and recognizing characters from video, without pre-knowledge such as font, color, size of character, is proposed. To improve the recognition rate for videos with complex background at low resolution, continuous frames with identical text region are automatically detected to compose an average frame. Using boundary pixels of a text region as seeds, we apply region filling to remove background from the character Then color clustering is applied to remove remaining backgrounds according to the verification of region filling process. Features such as white run and zero-one transition from the center, are extracted from unknown characters. These feature are compared with a pre-composed character feature set to recognize the characters.