오차보정기능을 갖는 10비트 D/A 변환기

김욱,양정욱,김민규,김석기,김원찬,Kim, Ook,Yang, Jung-Wook,Kim, Min-Kyu,Kim, Suk-Ki,Kim, Won-Chan 대한전자공학회 1994 전자공학회논문지-A Vol.31 No.6

To realize high accuracy and high speed we developed a new self compensation scheme and applied it to a 10-bit D/A converter. This circuit can compensate the device mismatch without interrupting the D/A converter operation. With the compensation circuit,INA decreased down to 0.22LSB from 0.47LSB. The device was fabricated using a 0.8$\mu$m CMOS process. The area of the D/A converter core is 3.2mm$^{2}$ and the area of the compensation part is 0.64mm$^{2}$.

연구보문 : 풋옥수수 수확 후 예냉처리와 저온저장에 따른 품질 변화

김정태 ( Jung Tae Kim ),허온숙 ( On Sook Hur ),김선림 ( Sun Lim Kim ),김미정 ( Mi Jung Kim ),손범영 ( Beom Young Son ),이진석 ( Jin Seok Lee ),백성범 ( Seong Bum Baek ),서세정 ( Sea Jung Seo ),김욱한 ( Wook Han Kim ) 한국국제농업개발학회 2011 韓國國際農業開發學會誌 Vol.23 No.1

Quality attributes of fresh waxy corn (Zea mays L.) as affected by pre-cooling and storage temperature (4˚C and room temperature) were investigated in terms of weight loss, moisture, color, reducing sugar content, and sensory quality. Two varieties of waxy corn with white and black kernel color, Ilmichal and Heukjinjuchal respectively, were cultivated at the field of National Institute of Crop Science in 2007 and 2008 to determine the physiologically optimal storage condition for higher eating quality stored in refrigerator of 4˚C and room temperature. They are pre-cooled immediately after harvest with ice for 5 hours. Quality analyses were monitored during 10 days at 4˚C storage room comparing with those of non cooled and stored at room temperature. A higher weight loss over 15% observed in both of two waxy corn varieties that were stored at room temperature. But there was not significantly difference with variety or pre-cooling treatment. There was up to 10% increase in moisture content in kernels non pre-cooled and stored at room temperature. For all treatments, very small amount of free sugar were detected, however, there were no significant differences between treatments. Glucose concentration increased with time in kernels stored at 4˚C and the effect of pre-cooling was not significant. A general darkening in color of kernels and a trend to turn yellow was observed in the pre-cooled corns when they were steam-cooked. Total sensory scores of corns stored in 4˚C were better than those of samples stored in room temperature and there was not significantly difference with variety or pre-cooling treatment. As storage period was longer, shelf lifes of waxy corn in control and waxy corn treated with technique applied to store waxy corn, and the quality of waxy corn could be maintained and the storage expense could be saved during storage. It is required that further studies narrow down the effect of pre-cooling on fresh waxy corn during short time storage.

원자력발전소(原子力發電所) 가동중(稼動中) 검사(檢査)의 시험분석(試驗分析)을 위한 자동화연구(自動化硏究) (I)

김욱,Kim, W. 한국비파괴검사학회 1985 한국비파괴검사학회지 Vol.5 No.1

The developing country, KOREA where does not possess the natural resources for traditional energy such as oil and gas, so. The nuclear energy is the most single reliable source available for closing the energy gap. For these reason, It is inavoidable to construct the nuclear power plant and to develop technology related nuclear energy. The rate of operation in large nuclear power facilities depends upon the performance of work system through design and construction, and also the applied technology. Especially, it is the most important element that safety and reliability in operation of nuclear power plant. In view of this aspects, Nuclear power plant is performed severe examinations during preservice and inservice inspection. This study provide an automation of analysis for volumetric examination which is required to nuclear power plant components. It is composed as follows: I. Introduction II. Inservice Inspection of Nuclear Power Plant ${\ast}$ General Requirement. ${\ast}$ Principle and Methods of Ultrasonic Test. ${\ast}$ Study of Flaw Evaluation and Design of Classifying Formula for Flaws. III. Design of Automation for Flaw Evaluation. IV. An Example V. Conclusion In this theory, It is classifying the flaws, the formula of classifying flaws and the design of automation that is the main important point. As motioned the above, Owing to such as automatic design, more time could be allocated to practical test than that of evaluation of defects, Protecting against subjective bias tester by himself and miscalculation by dint of various process of computation. For the more, adopting this method would be used to more retaining for many test data and comparative evaluating during successive inspection intervals. Inspite of limitation for testing method and required application to test components, it provide useful application to flow evaluation for volumetric examination. Owing to the characteristics of nuclear power plant that is highly skill intensive industry and has huze system, the more notice should be concentrated as follows. Establishing rational operation plan, developing various technology, and making the newly designed system for undeveloped sector.

군사훈련 소음이 주민들의 삶의 만족도에 미치는 영향

김욱,조영무,Kim, Wook,Cho, Young-Moo 한국콘텐츠학회 2022 한국콘텐츠학회논문지 Vol.22 No.10

이 연구는 군사훈련으로 발생하는 소음이 군사시설 주변에 거주하는 주민들의 삶의 만족도에 미치는 영향을 확인하기 위해 시행되었다. 2017년 군사시설 주변에 거주하는 성인 주민 904명을 대상으로 설문을 시행하였다. 대상자들의 삶의 만족도 점수는 총 5점 만점에 3.17점 수준으로 선행연구에 비해 낮은 수준으로 확인되었다. 삶의 만족도 영향요인을 분석하기 위해 종속변수로 삶의 만족도, 독립변수로 인구사회학적 요인과 신체적 피해 경험 요인, 그리고 정신적 피해 경험 요인을 선정하여 회귀분석한 결과 인구사회학적 요인으로는 월평균 가구소득(coef.=0.09, p<0.001), 정신적 피해 경험 요인으로는 정서불안(coef.=-0.34, p<0.001)과 스트레스(coef.=-0.05, p<0.001)가 삶의 만족도에 영향을 미치는 것으로 분석되었다. 이 연구는 군사시설 주변 지역에 거주하는 주민들의 삶의 만족도 향상을 위한 정책 수립에 기초 자료로 활용될 수 있을 것으로 기대된다.

충청 지역주의의 역사적 발전과정과 특성

김욱(Kim Wook) 한국정치정보학회 2007 정치정보연구 Vol.10 No.2

거시적 차원에서 보면 한국의 선거 과정에서 지역주의의 영향력은 여전한 것으로 보인다. 그러나 보다 미시적인 차원에서 지역주의의 내부적 성격은 지난 20년간 많은 변화를 경험하였다. 처음에는 3김을 중심으로 한 특정 정치지도자와의 감정적, 정서적 유대감에 의존했던 지역주의가 이제는 감정적 요소보다는 이념적, 정책적 요소를 다분히 갖게 되었다. 그리고 지역주의는 지역별로 다른 형태를 띠며 발전해 왔다. 본 연구가 초점을 맞추고 있는 충청 지역주의는 영호남 지역주의에 비해 공고화의 수준이 낮다. 처음부터 영호남 지역주의에 대한 반작용으로 탄생했으며 표의 수나 결속력의 측면에서도 상대적으로 열세에 위치한 충청 지역주의는 주도적으로 대권을 차지할 능력을 결여하고 있다. 따라서 충청 지역주의는 전략적 성격을 강하게 띠며 유연하고 다양한 모습으로 나타나게 되었으며, 또한 영호남 지역주의에 비해 이념성이 약하고 대신 실리적인 측면을 강조하게 되었다. 영호남지역주의가 각기 보수 및 진보 이념과 중첩되면서 한국 정치의 커다란 균열 축을 구성했다면, 충청 지역주의는 그러한 공고화를 경험하지 못하고 아직도 가변성을 강하게 지니고 있다. At the macro level, the influence of regionalism in the Korean electoral process seems to have not changed much. If one looks its internal characteristics at the micro level, however, they have gone through significant changes over the past 20 years. The old regionalism, which relied heavily on "emotional" ties with prominent political leaders from particular regions (e.g, the three Kim's), is being transformed into a new regionalism, which has more ideological and policy elements. And in the process, different regions have developed different forms of regionalism. Regionalism in Chung-chung region, in particular, is less consolidated than Ho-nam and Young-nam regionalism. Chung-chung regionalism, rather than seeking hegemony, has taken a more strategic approach, exhibiting greater flexibility and versatility. It is not so ideologically oriented as Ho-nam and Young-nam regionalism, thus focusing on gaining actual benefit through specific policies, as exemplified in the case of "relocating the Capital" to Chung-chung region. In short, Chung-chung regionalism is quite utilitarian in nature.

골프 동호인들의 운동열정과 운동몰입 및 운동지속의 관계

김욱한(Kim, Wook-Han),이봉(Yi, Bong) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.1

This study was proposed to provide fundamental information for understanding psychological characteristics of club golf coterie members via verification of structural relationship among passion, commitment and adherence in the group of amateur club golfers. To attain this purpose, total 337 subjects were selected with purposive sampling of non-probability sampling method for survey, and the final 315 data were analyzed with structural equation modeling. First of all, the relation between passion and commitment showed that harmonious passion has significant effect on behavioral commitment(β=.597, p〈.001) and cognitive commitment(β=.527, p〈.001) positively, and obsessive passion has significant effect on just cognitive commitment (β=.261. p〈.001) factor positively. Second, in the relation between exercise passion and exercise adherence, only harmonious passion showed positive effect on exercise adherence(β=.261, p=023). Finally, the relation between commitment and exercise adherence displayed that both of behavioral commitment(β=.322, p〈.001) and cognitive commitment(β=.327, p〈.001) positively affected exercise adherence.

군납, 학교급식 등 납품수요 꾸준한 가운데 공급량 부족으로 상승세

김욱,Kim, Uk 한국낙농육우협회 2015 낙농·육우 Vol.35 No.7

장막 침윤과 림프절 전이가 없는 위암에서 림프관 및 신경초 침윤의 의의

김욱,박조현,박승만,박우배,임근우,김승남,Kim Wook,Park Cho Hyun,Park Seung Man,Park Woo Bai,Lim Keun Woo,Kim Seung Nam 대한위암학회 2001 대한위암학회지 Vol.1 No.2

Purpose: The most important prognostic factors in gastric cancer are depth of invasion and lymph node metastasis. Therefore, the prognosis for serosa and lymph node negative gastric cancer is favorable. However, there is no general agreement on the prognostic factors in this subset of patients. This study was undertaken to evaluate the prognostic significances of venous invasion (VI), lymphatic invasion (LI), and perineural invasion (NI) in T1 and T2 gastric cancer without lymph node involvement. Materials and Methods: We retrospectively evaluated 206 patients with T1 and T2, lymph node negative gastric cancer who underwent a curative resection from 1989 to 1993 at Kangnam St. Mary's Hospital, Seoul, Korea. The Chi-square test was used to determine the statistical significance of differences, and the Kaplan-Meier method was used to calculate survival rates. Significant differences in the survival rates were assessed using the log-rank test, and the Cox regression method was used to evaluate independent prognostic significance. Results: The rate of VI, LI and NI correlated well with the depth of tumor invasion. The rates of VI (+) for T1 vs T2 was $0\%\;vs\;5.1\%$, of LI (+) was $5.6\%\;vs\;26.8\%$, and of NI (+) was $1.6\%\;vs\;26.8\%$ in NI (+). There were 13 recurrent cases, 10 cases out of the 13 were T2 gastric cancers, and the recurrence rate was higher in LI (+) and NI (+) cases than in LI (-) and NI (-) cases. The 5-year survival rates were $93.4\%$ in LI (-) cases, $77.4\%$ in LI (+) cases, $92.5\%$ in NI (-) cases, $74\%$ in NI(+) cases, $95.9\%$ in LI (-) NI (-) cases, and $73.9\%$ in LI (+) NI (+) cases. Multivariate analysis demonstrated that simultaneous LI and NI was the only significant factor influencing the prognosis. Conclusion: These results suggest that simultaneous lymphatic and perineural invasion may be an independent prognostic factor in patients with T1 and T2 gastric cancer without lymph node metastasis.

P Element-Mediated Transformation with the rosy Gene in Drosophila melanogaster

김욱,Kim, Wook,Kidwell, Margaret G. The Korean Society for Integrative Biology 1995 동물학회지 Vol.38 No.3

D. melanogaster를 대상으로 두 종류의 P element construct, 즉 Pc[(ry+)B]와 p[(ry+)$\Delta$SX9]을 사용한 형질전환 실험을 통하여 자율적 및 비자율적인 P element construct간의 vector로써의 효율성을 분석했다. 자율적인 P element 내에 rosy 유전자를 포함하고 있는 Pc[(ry+)B] construct를 진정 M 계통형인 ry506 돌연변이 계통에 주입시켰다. 또한 비자율적인 P element 내에 rosy 유전자를 포함하고 있는 p[(ry+)$\Delta$SX9] construct와 전이효소의 공급원으로써 p-$\Delta$2-3hs$\pi$ helper plasmid를 역시 같은 계통의 ry506 돌연변이 계통에 주입시켰다. Dechorination 방법에 의해 총 1143 embryo를 대상으로 microinjection 한 결과, 모두 35 계통의 형질전환된 정상형의 눈을 가진 계통을 얻었다. P element construct를 주입시킨 전체 1143 embryo 중에서 약 20% 정도가 성체로 부화되었으며, 부화된 개체 가운데 약 40% 정도가 눈 색깔이 거의 정상형과 같은 G0 transformant 로 나타났다. 그러나 생식력을 가진 G0 transformant의 약 40% 만이 G1 transformant로 나타남으로써 모두 35 계통의 transformant를 얻었다. 따라서 G0 단계에서 나타난 형질전환 현상에는 반드시 rosy transformant의 염색체 삽입에 의해서 만이 아니라 세포질내에서도 construct내의 rosy 유전자의 발현이 가능한 것으로 분석되었다. 또한 형질전환율에 있어서는 Pc[(ry+)B]와p[(ry+)$\Delta$SX9] construct 간에 유의한 차가 없는 것으로 나타났다. 이상의 결과로 볼 때, 실험 목적에 따라 자율적인 P element 또는 helper DNA를 이용한 비자율적인 P element를 효과적인 vector 로 선택 이용함으로써 특정 유전자를 곤충집단내로 침투 및 고정시킬 수 있다고 판단된다. We have used two kinds of P element constructs, Pc[(ry+)B] and p[(ry+)$\Delta$SX9], for genetic transformation by microinjection of D. melanogaster. Pc[(ry+)B] construct carrying the rosy gene within an autonomous P element was injected into a true M strain caring the ry506. mutation. The source of transposase for microinjection and transformation was provided by a P element helper plasmid designated p-$\Delta$2-3hs$\pi$, which was co-injected with nonautonomous P[(ry+)$\Delta$SX9] construct into same ry506 M strains. A dechorination method was adopted and 35 independent transformed lines were obtained froin 1143 G0 Injected (35/1143). About 20% of the injected embryos eclosed as adults. Among G0 eclosed flies, approximately 40% exhibited eye color that was similar to wild-type (ry+), but about 60% of fertile G0 transformed lines appeared to have no G1 transformants. Therefore it is unlikely that G0 expression requires integration of the rosy transposon into chromosomes. Pc[(ry+)B] and P[(ry+)$\Delta$SX9] constructs were found to be nearly same in the frequency of element-mediated transformation. On the basis of these results, nonautonomous P elements constructs could he used as same effective vectors in P element-mediated transformation for introducing and fixing genes in insect populations.

기술자문 사례

김욱,Kim, Uk 기술표준원 2002 기술표준 Vol.1 No.-