• Bulletin of the Korean Chemical Society
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• 제24권8호
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• pp.1135-1140
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• 2003

The kinetics and mechanism of the pyridinolysis $(XC_5H_4N)$ of Y-aryl phenyl isothiocyanophosphates (1;$(YC_6H_4O)\;(C_6H_5O)$P(=O)NCS) are investigated in acetonitrile at 55.0 ℃. The Hammett plots for substituent (Y) variations in the substrate (log k₂ vs σY) exhibit a convex upward biphasic type with breaks at Y = H. For electron-donating Y groups the Hammett coefficients, ρY, are positive and cross-interaction constant ρXY is negative, while those for electron-withdrawing Y groups ρY values are negative with a positive ρXY. These results are interpreted to indicate mechanistic change at the breakpoint (σY = 0) from a concerted to a stepwise mechanism with rate-limiting expulsion of the $^-NCS$ group from a trigonal bipyramidal pentacoordinated (TBP-5C) intermediate. Biphasic plots of log k₂ vs σX or $pK_a$(X) with steeper slopes for the more basic nucleophiles are obtained suggesting an equatorial nucleophilic attack in contrast to an apical attack for the less basic nucleophiles with smaller magnitude of ρX or βx.

• ETRI Journal
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• 제34권1호
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• pp.44-54
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• 2012

Because of the intrinsic lack of internal-system observability and controllability in highly integrated multicore processors, very restricted access is allowed for the debugging of erroneous chip behavior. Therefore, the building of an efficient debug function is an important consideration in the design of multicore processors. In this paper, we propose a flexible on-chip debug architecture that embeds a special logic supporting the debug functionality in the multicore processor. It is designed to support run-stop-type debug functions that can halt and control the execution of the multicore processor at breakpoint events and inspect the possible causes of any errors. The debug architecture consists of the following three functional components: the core debug support block, the multicore debug support block, and the debug interface and control block. By embedding this debug infrastructure, the embedded processor cores within the multicore processor can be debugged simultaneously as well as independently. The debug control is performed by employing a JTAG-based scanning operation. We apply this on-chip debug architecture to build a debugger for a prototype multicore processor and demonstrate the validity and scalability of our approach.

• Neonatal Medicine
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• 제15권2호
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• pp.200-206
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• 2008

안면 기형, 삼각두, 뇌량 무형성, 감각 신경성 난청, 시각장애, 심기형, 심근병증, 폐동맥 고혈압, 배꼽 탈장과 생식기 기형이 있는 환아에게 동반된 9번 염색체 단완이질염색질 부위의 첨가를 발견하여 9번 염색체 p13 부위의 첨가와 연관된 다발성 기형의 발생을 보고하는 바이다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2008년도 춘계 학술논문 발표대회
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• pp.183-186
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• 2008

Carbonation is measured as Phenolphthalein Solution, it is possible to confirm the scope of alkali through acid and basic reaction. Then, Concrete Basic Reaction is decided according to alkali concentration depending on Potassium Hydroxide Now that Carbonation is gradually produced toward inner side from outer side, with time going by, it doesnt work, to some adequate depth, in as fast time as compulsory facilitating test. Thus, this research thesis made a comparative analysis on concrete phenomenal discoloration borderline following Phenolphthalein Solution, as part of a bid to measure Carbonation. Also, the thesis measured Concrete Alkali Concentration. The result showed that concrete coloring is classified into red and scarlet according to alkali concentration, and into borderline breakpoint of the speckle of scarlet and carbonation reaction. The higher chroma becomes with concrete decolorizing, the higher alkali concentration becomes.

• 한국해안해양공학회지
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• 제18권2호
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• pp.166-177
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• 2006

본 연구에서는 Boussinesq방정식을 지배방정식으로 한 기존의 강비선형 모형과 고차 모형(다층모형)의 정확도를 각각 검토하였으며, 사용된 다층모형은 Lynett과 Liu(2004a)에 의해 개발된 것이다. 수치모형으로 shelf 지형에서의 쇄파를 모의하였으며, 실험에 적용된 파랑의 비선형성(${k_0}{A_0}$)은 0.029~0.180 범위이다. 전반적으로 2층 모형의 해석결과가 실험결과와 잘 일치하였다. 1층모형의 경우에는 쇄파점 가까운 곳에서부터 파고가 빨리 증폭이 된 반면, 2층모형의 파고증폭 정도는 수리실험결과와 잘 부합하였다.

• 패션비즈니스
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• 제20권2호
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• pp.1-15
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• 2016

Currently, a lot of people are aware of their health and well-being, so they are concerned about their healthcare. 'Taekwondo' is one of the popular sports that Korean people are passionate about Taekwondo has also become globalized. The uniform of Taekwondo is gaining importance. Taekwondo involves a lot of movement, hence the pattern should facilitate the movement. In addition Taekwondo uniform pattern should meet the demands of functionality, fit and consumer design preferences. This study aimed to provide the basic data for development of Taekwondo uniform pattern based on design preferences and functionality to wearer satisfaction. The result of this method indicated fit and design details. Also, the length of pants, top, and sleeve was too wide, which has to more fitted for both of genders. For females, the breakpoint was too low, which requires some increase to make females feel more secure. In conclusion, the results of this study indicated that in order to increase 'Takwondo' value, Taekwondo uniform is required to be more fashionable and comfortable to wear, which could influence other sports wear.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2001년도 추계학술발표논문집 (상)
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• pp.671-674
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• 2001

Q+P Esto는 정보가전용 RTOS인 Q+P를 위한 원격 개발 환경이다. 타겟에이전트는 타겟에서 실행되면서 호스트에 있는 디버거와 원격쉘, 그리고 자원모니터 같은 Q+P Esto 도구들이 원격 개발을 하는데 필요한 기본적인 기능들을 제공한다. 본 논문은 GNU gdb 5.0에 있는 gdbserver를 이용하여 타겟에서 실행 중인 응용 프로세스를 감시 및 제어하는 구조를 제안한다. 디버깅을 위하여 정지점(breakpoint)에 걸린 응용 프로세스를 continue 시켰을 때 응용 프로세스가 무한 루프에 빠지더라도 타겟에이전트는 다른 도구의 요청을 계속 처리할 수 있다. 응용 프로세스를 제어하는 자세한 메커니즘은 gdbserver가 담당한다. 따라서, 타겟에이전트는 단지 gdb remote protocol만 사용하여 gdbserver와 통신하면 되므로 구현이 용이하다.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제8권1호
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• pp.9-16
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• 2002

조인 연산은 관계형 데이타베이스에서와 같이 시간 데이타베이스에서도 시스템 성능에 큰 영향을 미친다. 특히, 시간 조인은 조인 연산 단계 이전에 간격 분할의 최적화가 질의 처리 성능을 결정한다. 이 논문에서는 시간 데이타베이스의 병렬 조인 질의 처리 성능을 개선하기 위해 시간 조인 연산을 위한 시간 간격을 분할하는 최소 분할 기법을 제안하였고, 제안된 간격 분할의 최소 분할점을 결정하는 최소 간격 분할 알고리즘의 유효성은 예제 시나리오를 통해 검증하였으며, 기존 분할 알고리즘에 비해 성능 개선 효과가 있음을 확인하였다.

• The Journal of Asian Finance, Economics and Business
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• 제8권10호
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• pp.239-247
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• 2021

Central Bank authorities should carefully manage inflation rate uncertainties to achieve economic growth and development not only in the short-run but also in the long-run. Since inflation is a key macroeconomic variable, an increased understanding about its behavior is undoubtedly important. Thus, paper employs unit root with breakpoints to examine the mean reverting behavior of inflation rate in the Philippines using monthly data from 2002 to 2020. Empirically, the unit root breakpoint innovational and additive outlier tests favor the stationarity or mean reverting behavior of inflation in the Philippines. Also, results of standard unit root tests, ADF, PP, GLS-Dickey-Fuller, KPSS and NP, provide strong evidence of mean reverting processes. The mean reverting behavior of inflation rate reveals that the monetary policy using inflation targeting framework has succeeded in reducing chronic inflation persistence in the Philippines. Thus, this research supports inflation targeting policy that aims to maintain general price level stability for the Philippine economy's long-term growth and development prospects. The findings of this research remain important for the central bankers for not only providing them better understanding about the behavior of inflation rate, but also helping them formulate and implement policy reforms related to money, credit and banking.

• Annals of Rehabilitation Medicine
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• 제42권6호
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• pp.884-887
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• 2018

We report a female proband carrying a de novo 5q34-q35.2 deletion breakpoint, and review the unique skeletal phenotype and possible genotype related to this mutation. The patient presented with a persistent head tilt and limited head rotation. Non-contrast-enhanced three-dimensional computed tomography of the cervical spine revealed several malformations including a bone cleft in the right pars interarticularis, a bone defect in both C5 lamina and the transverse foramen at C2-C3, agenesis of the right articular process of C5, bony fusion of C4-C5, and subluxation of the craniocervical joints. Several deformities of the cervical spine seen in this patient have not been associated with the 5q deletion. A review of 5q-related mutations suggests that abnormalities associated with MSX2 gene might cause cervical spine abnormalities.