• 소음진동
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• 제9권2호
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• pp.393-400
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• 1999

Defect frequencies of rolling element bearings are experimentally investigated utilizing the two-sided directional spectra of the complex-valued vibration signals measured from the outer ring of defective bearings. The directional spectra make it possible to discern backward and forward defect frequencies. The experimental results show that the directional zoom spectrum is superior to the conventional spectrum in identification of bearing defect frequencies, in particular the inner race defect frequencies.

• 생명과학회지
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• 제13권4호
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• pp.375-382
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• 2003

본 연구는 콩 cyst 선충 race 14에 대한 저항성 QTLs 구명을 목적으로 한 바 결과를 요약하면 다음과 같다. 1. 회귀분석 결과 30개의 marker들(29 RAPD, 1 RFLP)에서 cyst 선충 race 14의 저항성에 대한 유의성이 인정되었다. 2. MAPMAKER/QTL 분석 결과 2개의 QTL들이 구명되었는데, 이 QTL들은 2개의 linkage groups (LGC-7와 LGC-9)에 위치하였으며, 모두 우성유전 양상을 나타내었다. 3. 다중회귀분석 결과 2개의 marker들($B15^2$와 $H06^1$)로 구성된 조합에서 가장 높은 표현적 변이의 값(22.9%)을 나타내었다. 콩 cyst 선충 rare 14에 대한 표현적 변이를 충분히 설명하기 위해서는 지속적인 QTL 구명 연구가 요구된다.

• 한국식물병리학회지
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• 제3권3호
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• pp.174-179
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• 1987

1978년부터 1985년까지 8년간 전국에서 수집 분리한 도열병균 4,885균주를 공시하여 레이스를 판별하였다. $1978\~1980$년까지 일본 구판별품종에 의한 레이스 판별 결과는 통일계품종 침해레이스 6, T-레이스군 2, C-레이스군 5, N-레이스군 2 등 15개 레이스였고 $1981\~1985$년까지 한국 판별품종에 의한 레이스 판별 결과는 통일계품종과 일반계품종에 병원성이 있는 KI-레이스군 11, 일반계품종에만 병원성이 있는 KJ-레이스군 7종 등 18개 레이스로 판별되었다. 시험기간 중 우점레이스는 도열병이 다발된 $1978\~1979$년은 레이스 $N-2^{+t},\;1980\~1985$년은 레이스 KJ-301이었으며 현재 재배되고 있는 통일계품종 대부분에 병원성을 갖는 레이스 KI-315a, ki-315b가 1983년에 출현 그 분포가 증가하였다. 레이스의 지역적 분포는 강원도 지역에는 저항성유전인자 Pi-k, Pi-i를 갖는 품종을 침해하는 레이스 KJ-105, KJ-201의 분포가 많았고, 충북, 전남 지역에는 레이스 KI-315b가 타지역보다 많이 분포하였다.

• 대한간호학회지
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• 제42권4호
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• pp.589-598
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• 2012

Purpose: The purpose of this study was to examine risk factors for pathological gambling of horse race participants. Methods: The participants, 508 horse race gamblers, completed the DSM-IV criteria of pathological gambling, Alcohol Use Disorders Identification Test (AUDIT-K) and Symptom Checklist-47-Revision (SCL-47-R). Data were analyzed using t-test, $x^2$-test, Fisher's exact test, and logistic regression analyses. Behaviors related to horse racing, alcohol abuse, and mental health were analyzed between problem or pathological gamblers compared to recreational gamblers. Results: The prevalence rates of recreational, problem, and pathological gambling were 36.6%, 39.4%, and 24.0%, respectively. Frequency of gambling (${\geq}4/day$), frequency of racetrack visiting (${\geq}3/month$), accompaniment (alone), and mental health (SCL-47-R scores) were all associated with increased risks of problem and pathological gambling. Expenditure on betting (${\geq}200,000$ won/day) and alcohol abuse (AUDIT-K 8-20 scores) group members had higher levels of gambling pathology than recreational gamblers. Conclusion: Problem and pathological gambling are highly associated with alcohol abuse and mental health disorders, suggesting that clinicians should carefully evaluate this population.

• Nutrition Research and Practice
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• 제1권3호
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• pp.218-223
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• 2007

This study investigated: 1) what weight-related behaviors college students practiced; 2) if the behaviors were performed for weight-related reasons; and 3) whether the behavioral practices differed by gender, race, and body weight status. This cross-sectional study used a questionnaire to collect information from a non-probability sample of undergraduate students (n=379; 48% men) recruited from large introductory psychology classes. Chi-square tests were conducted to examine simple comparisons, and multiple logistic regression analyses assessed differences. Male students reported adopting significantly fewer weight-related behaviors than females. Most frequently males increased exercise (69.2%), increased fruit and vegetable consumption (50%), skipped meals (46%), cut out sweets and junk foods (40%), and cut out between-meal snacks (35%). Female students most frequently increased exercise (67.4%), skipped meals (63%), increased fruit and vegetable consumption (62%), reduced the amount of food eaten (60%), and cut out between-meal snacks (51%). Negative behaviors were engaged in by only a few participants. Weight-related reasons were a significant factor for weight-related behavior adoption. Multiple logistic regression analyses showed that gender was consistently and significantly associated with the adoption of weight-related behaviors, while race and weight status were less consistently associated. Findings of this study will be helpful to dietitians who counsel college students. Results of this study may support effects to bring more comprehensive behaviorally-focused health md nutrition interventions to college campuses.

• 식물병연구
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• 제7권2호
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• pp.69-79
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• 2001

Meloidogyne arenaria race 2 (59%) is widely distributed, followed by M. incognita race 1 (23%), and an unknown race of M. incognita (18 ％) in greenhouses in southern Korea. The key character to distinguish between M. arenaria and M. incognita is excretory pore in female head. When oriental melon, Cucumis melo L., grafted on Shintozoa (Cucurbit maxima x Cu. moschata) is transplanted in February in a plastic tunnel inside a greenhouse infested with M. arenaria, nematodes produced egg masses on roots at 40 days after transplanting and the soil juveniles (J2) population reach maximum in July to 3,817/100 ㎤. Juveniles are distributed relatively uniform over the 180-cm-wide row horizontally and the highest density occurs at 0-25 cm soil depth. For the control of root-knot nematodes, rice rotation, solarization, and soil addition treatments are the most effective (P=0.05); treatments reduce number of J2 over 90% and increase yield two times. Corn retation, fosthiazate, and soil drying treatment are moderately effective, while sesame and green onion rotations are not effective. The relationship between M. arenaria and yield of oriental melon is adequately described by a linear regression model. In the test with wild Cucumis genetic sources introduced from U.S.Dept. of Agriculture (USDA), one of C.heptadactylus, two of C.anguria, two of C. anguria var. longaculeatus, nine of C. metuliferus are resistant to both species of root-knot nematodes.

• The Plant Pathology Journal
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• 제31권4호
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• pp.428-432
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• 2015

Sixty-seven isolates of bacterial spot pathogen (Xanthomonas spp.) collected from six provinces of Korea were tested for the identification of their pathotypes and determination of their distribution throughout Korea in an effort to genetically manage the disease. Near isogenic lines of Early Calwonder (Capsicum annuum) pepper plants carrying $Bs_1$, $Bs_2$ and $Bs_3$, and PI235047 (C. pubescens) were used as differential hosts. Race P1 was found to be predominant, followed by race P7, and races P3 and P8 were also observed. This is the first report of races P7 and P8 in Korea. The races P7 and P8 were differentiated from the former races P1 and P3, respectively, on the basis of their ability to elicit hypersensitive reactions to PI235047.

• 헤리티지:역사와 과학
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• 제35권
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• pp.120-137
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• 2002

It has not been a long time since we recognize that a word 'DNA' is not unfamiliar with us. Development of biology give us so much of benefits of civilization and so we call the 21th century as 'biological period'. It has not been a long time that archeology made contact with biology. With biological development, DNA typing analysis has been accomplished extensively since 1990's. We know through mitochondrial DNA base sequencing analysis that the Neanderthal man is not the origin of the human race and ancient human race set out from Africa. Biological science technology, which is polymerase chain reaction(PCR) or electrophoresis etc., made these results possible. A contact between biology, especially genetics, and archeology is getting accomplished through these current. If genetics keep in contact with archeological foundation, we know not only about ancient populations in the Korean Peninsula, but also origin of human race. This field is so-called 'DNA Archeology'. This field is of help to person identification and children discrimination as like a forensic science. We make every effort for great possibilities from co-ownership of these two fields and these fields needs to convert a recognition, especially.

• 영어어문교육
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• 제13권3호
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• pp.117-132
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• 2007

Playwright Eugene O'Neill's expressionistic text-based approach to The Emperor Jones, with an emphasis on fixity, was at odds with African American actor Charles Gilpin's improvisational performance technique, stressing rupture, spontaneity, and discontinuity. The contemporary avant-garde performance troupe The Wooster Group likewise produces subversive and interrogative forms of identity in performing the play, which challenge the normative approach to gender, race, and an imagined orientation. The historical foundation of subversion and destabilization laid by O'Neill and Gilpin were manifold in the Wooster Group's production of The Emperor Jones, and not only formed a backdrop to it but also played a central role in the group's representation of race and even gender on the stage. In this essay, I use O'Neill's play, The Emperor Jones, a crucial example of racialized fantasies of identification, to explore how the modernist stage through the performances of Gilpin and The Wooster Group constructed racialized subjects of both its performers and audiences. Gilpin and the Wooster Group's strategies each shared a similar complexity in the portrayal of black identity in performance. Offering an examination of how ideologies of race and gender overlap in The Emperor Jones, I hope to show how each performance signifies a range of subversions and differences simultaneously and sometimes oppositionally that needs to be explored both holistically and in detail to offer a fuller picture of these remarkable attempts. Through this approach, I examine Gilpin's creative adaptations of O'Neill's text and illuminate how it is that the Wooster Group's appropriative use of blackface in their performance has come to gain critical acceptance.

• 영미문화
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• 제14권1호
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• pp.141-167
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• 2014

The macro structural perspective of how race was formed nationally, politically, and socially has greatly contributed in revealing the ills of racialism until now, likewise, the dichotomous form of Asian-American literature corresponding to such perspective has made great contribution in awakening people's awareness of race. While acknowledging the contribution of such macro perspectives, we must take note that today's racialism is becoming materialized in different aspects. The tendency of present racial formation is that the recognition of race is spread out lightly but widely in everyday lives and is revealed through the perception of our body. While publicly stating that society is color-blind and inequality significantly resolved, racialism emerges in the personal and everyday aspects. Not erased but diluted and spread out more widely, and the more diluted, harder to erase, racialism has penetrated into the perception of our lives. Racialism works not as a conspicuous discrimination but as a common sense that is 'naturally' absorbed into our perception and perspective. Chang Rae Lee's Aloft shows the process of such racial formation in our age of hybridization. This study tries to clarify why present racial formation must be analyzed in the macro perceptual perspective and show how the racial perception in the narrative of the white dominant narrator, Jerry, becomes the field where he lives and how it is spread through his perception. Through the theories of Judith Butler and Linda M. Alcoff, this study analyzes how people are got to self-identification with the racialization through reiteration and what the relationship is between racial formation and the subject's performativity in Aloft. The study concludes that revealing such current processes of racial formation perceptively is not thinking it 'natural' and inevitable but the process of bringing about a change in it.