• Title/Summary/Keyword: behavioral experiment

Search Result 267, Processing Time 0.021 seconds

Effects of Humidification with an Air Purifying Substance on Sick Building Syndrome Symptoms (공기청정용 가습액이 새집증후군 자각증상에 미치는 영향연구)

  • Lee, Yeunsook;Lee, Hyunjeong;Cho, Jiyeon;Lim, Jungeun
    • KIEAE Journal
    • /
    • v.5 no.1
    • /
    • pp.3-10
    • /
    • 2005
  • Indoor air quality (IAQ) is recognized as a byproduct of industrialization that took place in the 20th century. The great attention to IAQ has been gained since 1980s, and led to numerous research studies that have mainly made in the developed countries. As the development of residential environment in Korea enters in the process of qualitative growth, IAQ has viewed as one of the core issues in the society, and research in relation to IAQ has been implemented until now in the fields of engineering and medical science. It is widely known that the sources and effects of indoor air pollution have been various, and IAQ research with multidisciplinary approaches is required. Nevertheless, few research embedded into a socio-behavioral approach to identifying interventive measures of residents and analyzing their choices is made. The purpose of this study is to examine the use of an interactive measure of residents in apartments that is air purification with phytoncide available in the market, and to investigate their self-reported effects of the air purifying substance on sick building syndrome symptoms. This study utilizes a field experiment design with pre-test and post-test, and the experiment is conducted in a natural field setting. A total of 87 test subjects from 32 households with already sick building syndrome are drawn via internet, and the participation is solely voluntary. The participants receive and use the air purifying substance, and are asked to use it continuously for two weeks and identify their self-reported symptoms of before- and after-use. The research findings indicate that air purification using phytoncide is effective to alleviate their symptoms in relation to sick building syndrome. Also it is noted that the participants report that the use of the air purification causes the positive impacts on their daily life. Further research is needed that compares the group with only humidifier and evaluates the mid-term and long-term use of the air purification and its effects.

A Study on the Dynamic Response Characteristics of Lathe Boring Bar (선반용 보링바의 동적응답특성 변동에 관한 연구)

  • Chun, Se-Ho;Ko, Tae-Jo
    • Journal of the Korean Society for Precision Engineering
    • /
    • v.27 no.8
    • /
    • pp.62-69
    • /
    • 2010
  • Internal lathe machining with a boring bar is weak with respect to vibration because the bar is long and slender. Therefore, it is important to study the dynamic characteristics of a boring bar. The purpose of this study was to identify the effects of overhang and cutting conditions on the dynamic response characteristics of a boring bar. For an efficient experiment, an $L_g(3^3)$ orthogonal array was applied and the results were quantitatively analyzed by ANOVA. Overhang, feed per revolution, and depth of cut were selected as independent variables. Meanwhile, dynamic stiffness, damping ratio, damping coefficient, and acceleration were chosen as dependent variables. The vibration signal was obtained from an accelerometer attached to the boring bar, followed by visualization by a signal analyzer. The effect of overhang was found to have a significant effect on the dynamic stiffness, damping ratio, and damping coefficient, but the other variables did not. As the length of the overhang increased, the dynamic stiffness decreased and the damping ratio increased. In addition, the damping coefficient increased until the length of the overhang was 4D (where D is the shank diameter), after which it remained constant. The acceleration decreased until the overhang length was 4D, and then increased sharply when the overhang was increased further. From these results, the behavioral trend of the damping characteristics changed when its overhang length was 4D. Consequently, there is a critical point that the dynamic characteristics of boring bar change.

Effect of Leisure & Recreation Liberal Art Lecture in the University on Leisure Attitude (대학·여가 레크리에이션 이론수업이 수강생의 여가태도에 미치는 영향)

  • Lee, Yeon-Ju
    • The Journal of the Korea Contents Association
    • /
    • v.10 no.5
    • /
    • pp.379-386
    • /
    • 2010
  • The purpose of this study was to exam the effect of the leisure lecture on the class participants' leisure attitude. To achieve the purpose, a experiment method was performed. The167 subjects for this experiment were extracted from two leisure lectures of a university located in north Chungcheong province. With those subjects, a leisure lecture was operated for two hours in a week for fifteen weeks. To collect data, Ragheb & Beard[22]'s LAS(Leisure Attitude Scale) was used. The scale was used twice for the subjects. The first was tested at the beginning of first lecture and the second was at the last lecture. The collected data was analyzed with paired t-test by SPSS 12.0 program for Windows. The results proved that the leisure lecture affected on the subjects' all four sub-factors(cognitive, affective, intent, behavioral) of leisure attitude. Furthermore, the effect of the lecture was different by sex and grade.

Effect of an Integrated Stress Management Program on the Stress Symptoms of Psychophysiological Patients (통합적 스트레스 관리 프로그램이 정신생리질환자의 스트레스증상에 미치는 영향 -소화성 궤양 환자를 중심으로-)

  • 한금선
    • Journal of Korean Academy of Nursing
    • /
    • v.27 no.2
    • /
    • pp.289-302
    • /
    • 1997
  • The main purpose of this study was to identify the effects of integrated stress management program on the stress symptoms of psychophysiological patients. especially patients with peptic ulcer. The study employed a quasi-experimental design using two different experimental groups. The samples in the integrated stress management program participated in autogenic training with biofeedback. discussions on effective coping method. cognitive. behavioral, and emotional management. They were also provided with an educational booklet on stress management and an tape on progressive muscie relaxation. Each session lasted one hour and the program consisted of seven sessions over four weeks. The other group was only given an tape on progressive muscle relaxation. The data were collected from May 20 to september 25, 1996. A total 47 patients from one university hospital located in Seoul participated, experiment group 1(integrated stress management training) had 23 subjects and experiment group 2(progressive muscle relaxation training) had 24 subjects. The effects of these programs were measured by the stress symptom scale developed by Kogan(1991) which was translated by Lee(1992) and the healing status of the ulcer evaluated by a physician. The data were analyzed using Chi-square test, t- test, ANOVA, repeated measure ANOVA. The result are as follows : 1. The integrated stress management group reported a significantly lower stress symptom score than the group given the progressive muscle relaxation only. 2. The integrated stress management group showed a significantly improved ulcer status as compared to the group given a progressive muscle relaxation only. In conclusion, it was found that the integrated stress management program was more effective in decreasing self-reported stress and physiological symptoms among patients with peptic ulcer as compared to the progressive muscle relaxation group. Based on this finding, the following suggestions can be made. 1. It is necessary to broaden the scope of nursing practice for psychophysiological patients so nurses can include stress management as part of patient care. 2. It is necessary to develop stress management program for other patients whose symptoms are known to be related to stress. 3. It is necessary to replicated this study with a larger sample in different settings.

  • PDF

Analysis of Survey on the Brand Space with Emotional Evaluation - Focused on the Premium Supermarket in Seoul - (브랜드공간에 대한 사용자 감성평가조사 - 서울시내 프리미엄 식품관을 중심으로 -)

  • An, Se-Yun
    • Korean Institute of Interior Design Journal
    • /
    • v.24 no.2
    • /
    • pp.134-141
    • /
    • 2015
  • Brand space is one of the important elements of urban cultural space and can stimulate the urban culture as a significant landmark. Thus, it is necessary to develop factors for evaluating the communication with users in brand spaces. In particular, factors for evaluating the psychological, emotional aspects of users is essential. This study is aimed at developing evaluation factors with a space marketing perspective through an user behavioral analysis. As for research method, the emotional responses of users will be examined and analyzed through an eye-tracking device. First, The researcher will visit brand spaces and take photos of them to collect data and analyze the status. Second, we filled out the questionnaire based on analytical framework and selected 20 architectural students for survey. Third, Eye-tracking experiment will be conducted. Forth, Space design marketing evaluation factors will be established based on the results. Final, suggestions for future research based on the analysis results. When the 30 images of premium supermarkets were used for the survey, men were more sensitive to the store design. But women were more sensitive to the quality or store accessibility. Also, the furniture factor was most important for women, and spatial factor was most important for men. When the eye-tracking experiment was done as to the 5 selected brand spaces, both men and women looked at the furniture factor that includes the showcases more than anything else. It shows the same result as the previous survey.

Effect of Acupuncture on Behavior and Dopamine Release in the Nucleus Accumbens in rats Sensitized to Morphine (몰핀 투여로 민감화된 실험동물의 행동 및 뇌 측핵의 도파민 유리에 대한 침 효과)

  • Lyu Yeoung Su
    • Journal of Physiology & Pathology in Korean Medicine
    • /
    • v.17 no.2
    • /
    • pp.510-517
    • /
    • 2003
  • Studies have shown that both the psychomotor stimulant effects and rewarding properties of addictive drugs, including morphine, are sensitized by repeated drug administration and it is suggested that both of these effects are mediated by the same or closely overlapping dopamine systems. Specifically, the mesolimbic dopamine system has been implicated in the reinforcing and sensitizing properties of morphine. In oriental medicine, Shenmen (HT7) point on the heart channel has been used to treat mental and psychosomatic disorders. This study was designed to investigate the effect of acupuncture on acute and repeated morphine-induced changes in extracellular dopamine levels using in vivo microdialysis and morphine-induced behavioral changes. In the morphine sensitization experiment, male Sprague-Dawley rats were treated twice a day for three days with increasing doses of morphine (10, 20 and 40 mg/kg, s.c.) or with saline. After 15 days of withdrawal, rats were challenged with morphine hydrochloride (5 mg/kg, s.c.). Acupuncture was applied at bilateral Shenmen (HT7) points for 1 min after the morphine challenge. In the acute experiment, rats also received acupuncture for 1 min after an injection of morphine hydrochloride (5 mg/kg, s.c.). Results showed that acupuncture at the specific acupoint HT7, but not at control points (tail) significantly decreased both dopamine release and behavior induced by a systemic morphine challenge or a single sc morphine injection in the acute animals. These results suggest that reduction in sensitization may be one mechanism whereby acupuncture alleviates morphine craving in addicts.

Effects of Acceptance and Commitment Therapy(ACT) on Assertiveness and Interpersonal Anxiety of University Students with Interpersonal Anxiety (수용-전념 치료(ACT)가 대인불안이 있는 대학생들의 주장성과 대인불안에 미치는 효과)

  • Lee, GyuBok;Son, ChongNak
    • Journal of Digital Convergence
    • /
    • v.17 no.4
    • /
    • pp.345-353
    • /
    • 2019
  • The purpose of this study was to explore effects of acceptance-­commitment therapy on assertiveness and interpersonal anxiety of university students with interpersonal anxiety. Twelve students are selected of three hundred thirty students who completed an assertiveness sacle and a social anxiety scale, and finally six students were assigned to an experiment group and the others to a control group. ACT program consisting of 8 sessions twice a week approximately 120minutes is provided for experiment group, on the other hand, nothing is provided for control group. All participants completed an assertiveness sacle, a social anxiety scale at pre-­test, post-­test, and 6 weeks follow­-up periods. In the experimental group, the assertiveness score was improved after ACT program but not in the control group. The improvement observed in the experimental group was maintained until the follow-­up test. In the anxiety test, the experimental group showed a larger decrease than the control group, and the difference was also found in the follow­-up test. Finally, the implications and limitations of this study, along with suggestions for future study were discussed.

Effects of transport time and feeding type on weight loss, meat quality and behavior of broilers

  • Fu, Yajie;Yin, Jingwen;Zhao, Ning;Xue, Ge;Zhang, Runxiang;Li, Jianhong;Bao, Jun
    • Animal Bioscience
    • /
    • v.35 no.7
    • /
    • pp.1039-1047
    • /
    • 2022
  • Objective: The purpose of this study is to determine the optimal time of transportation of floor-feed and scatter-feed broilers. Methods: Eighty healthy Arbor Acres (AA) broilers (21-day-old, 624.4 g, male, standard error = 6.65) were selected and randomly divided into two experimental groups (floor-feed and scatter-feed), then fed for three weeks. The experiment comprised a 2×4 factorial design with 2 feed patterns (floor-feed and scatter-feed) and 4 transport periods (2, 3, 4, and 5 h), and 4 replicates of 5 broilers (54-day-old, 2243 g, standard error = 46.65) was used to compare weight loss, meat quality and behavior index of different groups. Results: It appeared that drip loss, meat color and resting behavior of experimental broilers changed as length of transportation (p<0.05), however, weight loss and pH were not significantly transformed (p>0.05). Compared with floor-feed group, broilers in scatter-feed group had lower pH at 24 hours (3 h) and different behavioral indicators (p<0.05). Especially indicators after 3 h transportation, there were obvious differences between the two feeding modes in the behavior reaction of stress events before slaughter with different transport duration (p<0.05). The fluctuation of data on resting behavior with scatter-feed was significantly higher than that of floor-feed broilers. There was no interaction between transport time and different feeding methods for index tested of our experiment (p>0.05). Conclusion: Comprehensive analysis showed that the maximum transport duration of floor-feed and scatter-feed broilers should not exceed 3 h, and scatter-feed broilers were more likely prone to fear.

Analysis of Visual Attention in Negative Emotional Expression Emoticons using Eye-Tracking Device (시선추적 장치를 활용한 부정적 감정표현 이모티콘의 시각적 주의집중도 분석)

  • Park, Minhee;Kwon, Mahnwoo;Hwang, Mikyung
    • Journal of Korea Multimedia Society
    • /
    • v.24 no.11
    • /
    • pp.1580-1587
    • /
    • 2021
  • Currently, the development and sale of various emoticons has given users a wider range of choices, but a systematic and specific approach to the recognition and use of emoticons by actual users is lacking. Therefore, this study tried to investigate the subjective perception and visual attention concentration of actual users on negative emotional expression emoticons through a survey and eye tracking experiment. First, as a result of subjective recognition analysis, it was found that emoticons are frequently used because their appearance is important, and they can express various emotions in a fun and interesting way. In particular, it was found that emoticons that express negative emotions are often used because they can indirectly express negative emotions through various and concretely expressed visual elements. Next, as a result of the eye tracking experiment, it was found that the negative emotional expression emoticons focused on the large elements that visually emphasized or emphasized the emotional expression elements, and it was found that the focus was not only on the facial expression but also on the physical behavioral responses and language of expression of emotions. These results will be used as basic data to understand users' perceptions and utilization of the diversified emoticons. In addition, for the long-term growth and activation of the emoticon industry market in the future, continuous research should be conducted to understand the various emotions of real users and to develop differentiated emoticons that can maximize the empathy effect appropriate to the situation.

Further Evidence in Support of Psychotropic Action on Red Ginseng

  • Yoshimura, Hiroyuki;Kimura, Naoto
    • Proceedings of the Ginseng society Conference
    • /
    • 1990.06a
    • /
    • pp.29-35
    • /
    • 1990
  • Using an ethopharmacological technique, we demonstrated that saponin fraction from red ginseng root possessed a potent psychotropic actions on either intermale or maternal aggression models. A series of experiments clearly indicated that one of psychoactive ingredient is ginsenoside Rbl. Although a drug-induced debilitation of motor performance remains a possible cause of the antiaggressive effect of the drug, ginsenoside Rb 1 did not alter the locomotor activity of the mice during agonistic confrontations. Thus, one can eliminate the possibility that the psychoactive effect of ginsenoside Rbl might be concealed by a drugindulced impairment of motor performance. More recently, we developed a new model for copulatory disorder and introduced into the behavioral analysis of drug action. Male mice which has been housed individually from weaning for 5 weeks failed to manifest copulatory behavior when they encountered with the sexually-receptive females. Daily administration of crude ginseng saponin during isolation housing period prevented the development of copulatory disorder, whereas both ginsenoside Rbl and Rgl were ineffective. A further experiment may be needed to explore active ingredient of ginseng saponins. Keywords Panax ginseng, Korean red ginseng, psychotropic action, saponin, ginsenoside Rb1

  • PDF