• 한국응용곤충학회지
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• 제30권1호
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• pp.94-99
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• 1991

솔껍질깍지벌레 암컷성충의 일주기와 관련된 성훼로몬의 체내생산과 발산 습성을 밝히기 위하여 우화후 시간별로 성훼로몬의 보유량 및 발산량을 조사하였다. 체내 생산량 및 발산량은 공히 매일 오전 8시부터 오후 2시사이에 가장 많았으며 오후 4시 이후는 현저히 줄어드는 양상을 나타내었고 또한 우화후 3일이 경과하면 점점 감소하였다. 본 곤충의 생식활동에 있어 성훼로몬의 발산과 암수성충활동의 일주기가 일치하는 것의 의미가 검토되었다.

• 한국응용곤충학회지
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• 제53권2호
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• pp.177-183
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• 2014

갈색여치는 최근 대발생으로 과수농가에서 피해가 급격히 증가하고 있다. 갈색여치의 종령 약충과 미성숙 성충, 성숙 성충에 대한 교미행동 및 일일행동패턴에 대하여 조사하였다. 일일행동패턴은 휴식, 이동, 섭식을 반복하였다. 종령 약충과 미성숙 성충의 일일행동패턴은 유사했다. 종령 약충은 평균 10:06에 활동을 시작하고 21:12에 휴식을 취한다. 미성숙 성충은 평균 11:30에 활동을 시작하고 20:08에 휴식을 취한다. 그러나 성숙 성충의 경우 15:30에 활동을 시작하는 차이를 보였다. 성숙 성충은 특정시간(약 20:00)대에 교미행동을 보인다. 갈색여치의 교미행동은 암컷의 spermatophylax를 섭취하게 되는데 다 섭취하기까지 270-360분이 소요된다. 갈색여치의 행동패턴은 이들의 발생양상과 생태를 알 수 있어 갈색여치를 방제하기 위한 기초자료로 이용될 수 있을 것이다.

• 말소리와 음성과학
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• 제8권2호
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• pp.1-9
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• 2016

This paper investigated the rhythmic features of speakers of English as a lingua franca in Asian contexts. A speech corpus of 150 conversations between speakers of English in Asia with different L1 backgrounds was collected and %V, ${\Delta}V$, VarcoV, and nPVI-V of each speaker were analyzed. It was found that L1 difference of the speakers and the speakers' daily use of English influenced %V, while the speakers' daily use of English influenced ${\Delta}V$. The gender difference of the speakers also affected the rhythm of the utterances in VarcoV. A weak correlation between the two speakers' rhythm in each conversation was also found in %V and ${\Delta}V$. No significant effects were found in nPVI-V. The results revealed that the speakers tended to accommodate the rhythm of their utterance to that of the interlocutors'. Further study on the speaking rate of the speakers is required to overcome some inconsistencies found in the results of the rhythmic metrics used in this study.

• 신경정신의학
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• 제57권4호
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• pp.276-286
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• 2018

Circadian rhythm is a periodic and continuous change in physiological, behavioral, and mental characteristics that occurs in most organisms on the Earth, because the Earth rotates in a 24-hour cycle. The circadian system regulates daily rhythms of physiology and behavior, such as the sleep/wake cycle, body temperature, hormonal secretion, and mood. The influence of circadian rhythm is very powerful, but limited research has addressed its effects. However, many recent studies have shown that circadian dysregulation may play an important role in the pathogenesis of bipolar disorder. This review study examined current and noteworthy studies, including the authors' own works, and proposes a possible clinical application of bipolar disorder based on evidence that circadian rhythm dysregulation in bipolar disorder may be a key pathogenetic mechanism.

• 셀메드
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• 제8권1호
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• pp.3.1-3.3
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• 2018

The aim of this article is to argue that rhythm of janggu may have meaningful effects as a form of vitality for the elderly. Janggu is the most popular and soft pitched instrument in the percussion family in Korean music. It is warm and soft makes very deep and exquisite sounds. Janggu is a source of Korean national pride because of unique, manifestation of yin-yang five-elements represented in Korean music. The meaning and influence of rhythm in human is in essence and natural. This style paper is a course of happy life and a basic step toward in the world. Music therapy has been employed as a therapeutic intervention to facilitate healing across a many of clinical populations. A cheerful rhythm of janggu promotes the vitality of the elderly. This joining has contributed to the vitality, health improvement and the whole body for the elderly. Instead of visiting hospital, they sit in front of the janggu what could be better than a daily dose of exercise. Therefore, the author thinks this might help them forget their anxieties, this very moment, janggu music rhythm therapy lays the foundation of a more vital lifestyle.

• 한국인터넷방송통신학회논문지
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• 제8권4호
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• pp.105-110
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• 2008

최근에 컴퓨터 기술이 음악, 게임 등과 같은 우리 일상 생활에 활발히 적용되고 있다. 대표적인 예가 리듬 게임이라고 할 수 있다. 본 논문에서는 PC 및 북 인터페이스를 갖춘 사용하기 쉬운 리듬 게임을 객체지향 소프트웨어 기법을 적용하여 개발한다.

• 수면정신생리
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• 제21권2호
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• pp.51-60
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• 2014

A 'circadian rhythm' is a self-sustained biological rhythm (cycle) that repeats itself approximately every 24 hours. Circadian rhythms are generated by an internal clock, or pacemaker, and persist even in the absence of environmental time cues, collectively termed 'zeitgebers.' Although organisms generate circadian rhythms internally, they are entrained by environmental stimuli, particularly the light-dark cycle. Measurement of the endogenous melatonin rhythm provides relatively reliable surrogate way of assessing the timing of the internal circadian clock. Also, core body temperature and cortisol can be used as markers of circadian rhythms. The sleep-wake cycle, body temperature, and melatonin rhythm have a stable internal phase relationship in humans and other diurnal species. They play an important role in controlling daily behavioral rhythms including task performance, blood pressure, and synthesis and secretion of several hormones. In this review, we address not only the properties, methods of measurement, and markers of circadian rhythms, but also the physiological and psychological importance of human circadian rhythms.

• Animal cells and systems
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• 제6권3호
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• pp.239-245
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• 2002

Plasma melatonin, thyroid-stimulating hormone (TSH) and body temperature were measured simultaneously and continuously before and after the sleep-wake cycle was shifted in 4 healthy males and changes in the circadian rhythm itself and in the phase relationship among these circadian rhythms were determined. Normal sleep-wake cycle (sleep hours: 2300-0700) was delayed by 10 h (sleep hours: 0900-1700) during the experiment. Even after this shift the typical melatonin rhythm was maintained: low during daytime and high during night. The melatonin rhythm was gradually delayed day by day. The TSH rhythm was also maintained fundamentally during 3 consecutive days of altered sleep-wake cycle. The phase was also delayed gradually but remarkably. The daily rhythm of body temperature was changed by the alteration of sleep-wake cycle. The body temperature began to decrease at the similar clock time as in the control but the decline during night awake period was less steep and the lowered body temperature persisted during sleep. The hormonal profiles during the days of shifted sleep/wake cycle suggest that plasma melatonin and TSH rhythms are basically regulated by an endogenous biological clock. The parallel phase shift of melatonin and TSH upon the change in sleep-wake cycle suggests that a common unitary pacemaker probably regulates these two rhythms. The reversal phase relationship between body temperature and melatonin suggests that melatonin may have a hypothermic effect on body temperature. The altered body temperature rhythm suggests that the awake status during night may inhibit the circadian decrease in body temperature and that sleep sustains the lowered body temperature. It is probable but uncertain that there ave causal relationships among sleep, melatonin, TSH, and body temperature.

• 대한한의학원전학회지
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• 제28권2호
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• pp.61-66
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• 2015

Objectives : Through the analyze of formative factor of time sense and the vital movement temporal rhythm in Huang Di Nei Jing(黃帝內經). Methods : We find out the principle and methods of Chronomedicine and Health Preserving in Huang Di Nei Jing(黃帝內經), and this finding will direct the life nurturing for later generations. We find that time sense had been established in Huang Di Nei Jing(黃帝內經), which had yin-yang and five elements characteristic. Results : There have temporal rhythm of functions of zang-fu viscera, meridian and collateral, qi and blood. Based on the theory of correspondence between human body and natural environment, established principle of health maintenance about based on yin and yang, temporal rhythm of visceral qi. Conclusions : Established health maintenance methods based on time such as adjusting-spirit according to time, regular daily life, dietary regimen according to time, needling and moxibustion according to time. These methods will guide syndrome differentiation and therapeutic method and Medication which based on suitable time.

• 수면정신생리
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• 제9권2호
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• pp.81-85
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• 2002

There are several factors which are more likely to have sleep disorders in fertile women with menstruation than adult men. Menstrual cycle plays an important role in them. We describe herein the overview about the association of menstrual cycle and sleep disorders by viewing the interactions of menstrual cycle and circadian rhythm. We review how menstrual cycle affects sleep-wake cycle by reviewing menstrual cycle and estrous cycle to understand these interactions. Menstrual cycle and estrous cycle are mainly affected by hormonal cycle and light-dark cycle, respectively and they are generally determined in monthly rhythm and annual rhythm, respectively. The determination of estrous cycle is also affected by cyclic changes of hormones besides light-dark cycle. Although sleep-wake cycle almost alternates according to estrous cycle in non-primate mammals, it is hardly affected by menstrual cycle in primate mammals as compared with estrous cycle. But menstrual cycle affects sleep-wake cycle via desynchronization of sleep-wake cycle and temperature rhythm. The decrease of amplitude and phasic change during luteal phase in the daily fluctuation of body core temperature can partially contribute to the induction of sleep disorders in fertile women. In addition to this, premenstrual syndrome which nearly happens during luteal phase commonly have sleep problems. Therefore, we suggest that menstrual cycle and PMS can partially contribute the increase of sleep disorders in fertile women.