• Journal of Yeungnam Medical Science
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• 제37권1호
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• pp.22-31
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• 2020

There has been a growing concern and subsequent interest surrounding numerous reproductive toxic agents found in various working and non-working environments. Meanwhile, there have been many efforts in medical fields such as toxicology and epidemiology applying experimental studies to elucidate reproductive toxic agents' characterization and health effects. However, there remains insufficient research data and inadequate evidence in humans. Adverse reproductive outcomes vary from transient, moderate health effects to severely detrimental consequences, such as permanent infertility or childhood cancer of one's offspring. Furthermore, upon exposure to toxic agents, the latent period before reproductive health effects are observed is relatively short compared to other occupational diseases (e.g., occupational cancer); instant action is required once exposure to reproductive toxic agents is detected. Therefore, it is very important for workers and healthcare professionals to know about the reproductive toxic agents they are likely to be exposed to. In this review, we discuss the general epidemiology of reproductive health in Korea, and the information regarding these reproductive toxic agents.

• Asian-Australasian Journal of Animal Sciences
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• 제28권11호
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• pp.1519-1524
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• 2015

It is well known that prepartum sows have an innate motivation to build a nest before parturition. Under commercial conditions, however, the farrowing crate, which is widely used in modern pig husbandry, inhibits this innate behaviour through the lack of space, materials, or both. Thus, restriction of nest-building behaviour could generate increased stress, resulting in a decrease in maternal endogenous hormones. Hence, it could lead to detrimental effects on farrowing and lactating performance. Here we review interactions between prepartum nest-building behaviour, stress and maternal endogenous hormone levels, and discuss their effects on parturition, lactation, and welfare of sows and offspring.

• Fisheries and Aquatic Sciences
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• 제14권2호
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• pp.148-160
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• 2011

Thirty-one gross abnormalities that have been observed in tilapia are described: 10 fin, five eye, five jaw, four body shape, three head, two yolk sac, one operculum, and conjoined twins. Twenty-one have been described in published papers; the others were obtained from a survey. Breeding experiments revealed that three were heritable, while six were not heritable. Five could be caused by a bacterial infection, and one could be produced by a fungus. Four deformities were in offspring of males that had been injected with methyl methane sulphonate. Three were produced when sperm was treated with methyl methane sulphonate. Six were observed during sex reversal studies, and one was found following heat shock of fertilized eggs. Three were observed in polluted river water. The cause of other deformities is not known.

• 제어로봇시스템학회논문지
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• 제14권11호
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• pp.1110-1116
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• 2008

In this paper, we suggest GP operators based on tree structure considering tree distributions in structure space and structural difficulties. The main idea of the proposed genetic operators is to place generated offspring into the specific region which nodes and depths are balanced and most of solutions exist. To enable that, the proposed operators are designed to utilize region information where parents belong and node/depth rates of selected subtree. To demonstrate the effectiveness of our proposed approach, experiments of binomial-3 regression, multiplexer and even parity problem are executed. The experiments results show that the proposed operators based on tree structure is superior to the results of standard GP for all three test problems in both success rate and number of evaluations.

• 대한가정학회지
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• 제38권6호
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• pp.15-28
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• 2000

The purpose of this research was to examine variables contributing to the father's role performance. The study has been designed to measure the quantitative(i.e. amount of involvement) and the qualitative(i.e. depth of affection/care) values in their modes of child-rearing practices by taking a clouter look at the father's views on their careers and on offspring. Subjects were 516 fathers of school-age children. Analyzing the factors that determine the quantitative and qualitative aspects of child-rearing practices by the fathers, the sense of fulfillment/value in life is the decisive factor behind the affection(i.e. qualitative) in the child-rearing practices. The resets indicated that the father's perceptions on their careers and on their children constitute the critical factors behind the qualitative and quantitative aspects of child-rearing practices, albeit holding such factors as the parents'working hour or as mothers with outside jobs under control.

• 가정과삶의질연구
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• 제12권2호
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• pp.118-128
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• 1994

본 연구의 목적은 알콜중독가정에서 성장한 성인자녀들의 적응도에 영향을 미치는 요인들간의 인과관계를 설명해줄 수 있는 이론적 인과관계모델을 개발하고 그 모델의 적합 성(fit of the model)에 대해 연구되었다 본 연구의 이론적 인과관계모델은 가족 체계이론 대응이론 사회지원이론, 그리고 사회학습이론에 기초를 두고 개발되었다. 본 연구자에 의해 개발된 이론적 인과관계모델은 표보의 특성을 좀 더 적절하게 설명할 수 있고 모델의 적합 성을 증진시키기 위해 수정된 인과관계모델을 바탕으로 연구되었다. 본 연구의 결과를 요약 하면 다음과 같다. 1) 사회적지원의 이용성을 인식하는 성인 자녀들의 경우 정서적으로 불 안정한 상태를 초래했으며 ;2) 사회적지원은 삶에 대한 적응도에 긍정적인 영향을 미쳤고; 3) 정서적으로 안정된 성인자녀들의 경우 글의 삶에 좀 더나은 적응도를 나타내는데 영향을 미쳤다 본 연구에서는 또한 사회적지원과 성인자녀들의 정서적 상태간의 부정적 인관관계에 대해 논의 되었으며 본 연구의 결과를 바탕으로 상담현장에서의 실제 활용에 대해서도 논의 되었다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.176.3-176
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• 2001

Hydraulic servo system has the characteristic of high power in itself, as combining its characteristics with excellent electro equipment that comes from the development of electronics, electro-hydraulic servo system is widely used in industry that are requested high precision and power Electro-hydraulic servo system is characteristic of very strong non-linearity in itself and it is mainly applied the field of the inner or outer fluctuating load or disturbance in industry. Evolutionary computation based on the natural evolutionary process may solve many engineering problems. Algorithms can represent the natural selection in crossovers, mutations, production of the offspring, selection, etc. Nature has already shown is the superiority through ...

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.165.1-165
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• 2001

The evolution strategy is a good evolutionary algorithm to find the global optimum of a real-valued function. Since many engineering problems can be formulated as real valued function optimization, the evolution strategy is frequently employed in engineering fields. However, in many engineering optimization problems, an optimization parameter is often restricted in the bounded region between two specified values, the minimum and the maximum limit, respectively. Since an offspring individual is generated randomly around a parent individual during mutation process of the evolution strategy, an individual outside the search region can be generated even if the parent is inside the search region. This paper proposes two new boundary-handling techniques for evolution strategies. One is the ...

• Journal of Genetic Medicine
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• 제5권1호
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• pp.1-6
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• 2008

Knowledge of developmental biology is essential for clinicians who seek to develop a rational approach to the diagnostic evaluation of patients with birth defects. After an accurate diagnosis, a clinician can make predictions about prognosis, recommend management options, and provide an indication of recurrence risk for the parents and relatives. In this paper, we first review the basic mechanisms of embryological development and clinical dysmorphology. We then review cellular and molecular mechanisms in development and related congenital anomalies. Developmental anomalies have a major impact on public health. Genetic counseling and prenatal diagnosis, with the option to continue or to terminate a pregnancy, are important for helping families faced with the risk of a serious congenital anomaly in their offspring. Moreover, primary prevention of birth defects, for example, supplementation of prenatal folic acid and prevention of consumption of alcohol which has teratogenic effects, can be accomplished using developmental biology knowledge.

• 인문언어
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• 제6권
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• pp.7-31
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• 2004

This paper argues that (1) word-for-word literary translation is not possible; all it does is achieve what Chukovsky characterized as 'imprecise precision' (1984:47), (2) contra to Nida (1969) and others, translation does not just mean translating meaning, and (3) therefore, a translator must negotiate an uneasy but inevitable compromise between accuracy and elegance. To make the translated passage just as pleasing, moving, and cathartic as the original passage as much as possible, a great deal of literary skill is required on the part of the translator. The iniquity of translators is not so much infidelity as infertility to produce an offspring worthy of an heir to the original writer. Translators are not traitors; they are traders, or literary merchants, who trade one form of linguistic unit for another, often meaning for form, or sense for sound, but sometimes form for meaning. A translator then is not a man of treason but is a tradesman.