• Title/Summary/Keyword: Adjustment system

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Comparison of F-18 FDG Radioacitivity to Determine Accurate Dose Calibrator Activity Measurements (방사능 측정기를 이용한 F-18 FDG 방사능의 비교)

  • Jin, Gye-Hwan;Kweon, Dae-Cheol;Oh, Ki-Baek;Park, Hoon-Hee;Kim, Jung-Yul;Park, Min-Soo;Park, Dae-Sung
    • Progress in Medical Physics
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    • v.20 no.3
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    • pp.159-166
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    • 2009
  • Obviously, the administration of the prescribed amount of activity to the patient requires proper operation of the dose calibrator, which shall be verified by implementing the required quality control on the instrument. This investigation examined the accuracy and precision of dose calibrator activity measurement of the radiopharmaceutical F-18 FDG. To investigate the status of the nuclear medicine centers in Korea for the performance of dose calibrators, 10 centers providing PET/CT system services in Korea were inspected in 2008. We measured accuracy and precision in 10 equipments in consideration of PET/CT model, installation area, and installation time. According to the results of comparative analysis of 10 dose calibrators used to measure radioactivity of F-18 FDG, accuracy was -5.00~4.50% and precision was 0.05~0.45%, satisfying the international standards, which are accuracy ${\pm}$10% and precision ${\pm}$5%. This study demonstrated that, for accurate measurements, no adjustment is necessary for a dose calibrator setting when measuring different dose calibrators of F-18 FDG activity prescriptions.

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Determination of Proper Application Timing and Frequency for Management of Tomato Leaf Mold Disease by Commercially Available Microbial Preparations (미생물제제 이용 토마토 잎곰팡이병 방제시기 및 살포회수 결정)

  • Kang, Beom-Ryong;Ko, Sug-Ju;Kim, Do-Ik;Choi, Duck-Soo;Kim, Seon-Gon
    • Research in Plant Disease
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    • v.17 no.2
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    • pp.142-147
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    • 2011
  • In order to develop a environmentally friendly control protocol for managing tomato leaf mold disease in the field, we employed bacteria- and fungi-based commercially available microbial preparations. The field experiment was conducted from April to July in 2010. Average incidence rates tomato leaf mold caused by Fulvia fulva were 13.1% at the two plastic houses located in Jangsung, Jeonnam area. Initially 11 microbial preparations were tested for antifungal activity against F. fulva in vitro. Among them, 7 selected preparations showed to be inhibited the mycelial growth of the fungal pathogen over 50%. Four microbes suppressed disease incidence as much 50% under greenhouse condition. Eventually in the field two microbial products including Bacillus subtilis GB-0365 and B. subtilis KB-401 respectively were showed control value up to 71.8% for four times sprays from 20 days to 70 days after transplanting. Furthermore, the control value of three times spray program demonstrated 79.3%. Efficacy of the three and four spray programs was more effective than that of non-spray control treatment. Our results indicated that adjustment of application method of commercially available microbial preparation could be used to control a target plant disease as an effective and efficient crop protection system for organic farming.

A Study of father's care giving in infancy (아버지의 영아 돌봄에 관한 문헌연구)

  • Kim, Young-Hee
    • Korean Parent-Child Health Journal
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    • v.1
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    • pp.75-87
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    • 1998
  • These days social and economical changes have influence on the structure of family and the role of family members. Working mothers and widowers with children are increasing because of economical difficulties. Support from relatives are decreasing because of the conspicuous trend toward nuclear families. According to these reasons androgynous fathers are required. Today's fathers in Korea socially and culturally have learned about traditional parenting, but they are changing their fathering styles to meet the demands of the times. However they don't have their own fathering models. Therefore nurses who hold an advantageous position to teach and support from clinic have to encourage them to care their infants. The purposes of this study were to define father's care giving in infancy, understand influencing factors on fathering, and the differences between fathering and mothering, then contribute to nursing implementation for supporting fathers. This study was designed to review references about father's care giving. The results were follows: Six aspects of parent participation were direct care. indirect care, play, decision-making concerning the child, amount of time of sole responsibility for the child and overall availability to the child. Direct care involved feeding, bathing, going to child if child awakens. dressing, putting child to bed, taking child to doctor, nurse, or dentist, transporting child to and from sitter, day care, or school, washing child's hair. Indirect care involved cleaning up after child, preparing child's food, fixing child's broken playthings, washing child's clothes, arranging baby-sitting, shopping for child's toys and clothes, transporting baby-sitter to and from your home. Young fathers were gradually participating in direct care like feeding, taking child to doctor. Father's care giving stimulated mothering and promoted parent-infant relationship. Influencing factors of fathering would be divided into father characteristics, surrounding factors, infant attributes. Father characteristics were age, role perception, relationship with parent. Surrounding factors were the opportunity of early contact, support system, spouse's expectation, marital adjustment, feeding type, past experience of care giving. Infant attributes were temperament, behavior, age, sex. The differences between fathering and mothering were reviewed. Fathers were poor at care giving. but their caring was similar to mother's. This subtle difference positively worked upon infant's growth and development. On the basis of these theoretical data, nurses can empower fathers to cooperate with mothers in caring infants.

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Recent Fertility and its Policy Implications (최근의 출산력과 정책적 함의)

  • Park, Kyung-Ae
    • Korea journal of population studies
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    • v.30 no.3
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    • pp.137-156
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    • 2007
  • Total fertility rate (TFR) increased from the lowest 1.08 in 2005 to 1.13 in 2006, and a debate is made whether the increase is temporary or continuous as a result of various pro-natal policies. This study intends to explore policy implications revealed in recent fertility change using vital statistics. For this purpose, tempo-adjusted fertility rate by birth order, fertility rate by age of mother and birth order, age-specific fertility for married, and age-specific divorce rate for married are analyzed. The increase of TFR and births for 2006 is largely due to increase of first births at early thirties with slowdown of delayed first marriage and first child birth. The increase of female population (the third wave effect of baby boom) and first marriages of late twenties in 2006 and 2007 would lead to increase of fertility during 2007-2008. But further increase is uncertain because of the decrease trend of marital fertility and increase trend of never-married for twenties. TFRs for first and second births reduced rapidly, while TFRs for third and above births showed no changes, and second births were largely affected by tempo adjustment of fertility. Thus, constructing social environment for first and second births is more effective and necessary than encouraging third births. In addition, social responsibility of child care, child-women health issues due to delayed births, and the need for multi-cultural family support system are discussed.

A Study on Real Time Traffic Performance Improvement Considering QoS in IEEE 802.15.6 WBAN Environments (IEEE 802.15.6 WBAN 환경에서 QoS를 고려한 실시간 트래픽 성능향상에 관한 연구)

  • Ro, Seung-Min;Kim, Chung-Ho;Kang, Chul-Ho
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.48 no.4
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    • pp.84-91
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    • 2011
  • Recently, WBAN(Wireless Body Area Network) which has progressed standardization based on IEEE 802.15.6 standardization is a network for the purpose of the short-range wireless communications within around 3 meters from the inner or outer human body. Effective QoS control technique and data efficient management in limited bandwidth such as audio and video are important elements in terms of users and loads in short-range wireless networks. In this paper, for high-speed WBAN IEEE 802.15.6 standard, the dynamic allocation to give an efficient bandwidth management and weighted fair queueing algorithm have been proposed through the adjustment of the super-frame about limited data and Quality of Service (QoS) based on the queuing algorithm. Weighted Fair Queueing(WFQ) Algorithm represents the robust performance about elements to qualitative aspects as well as maintaining fairness and maximization of system performance. The performance results show that the dynamic allocation expanded transmission bandwidth five times and the weighted fair queueing increased maximum 24.3 % throughput and also resolved delay bound problem.

TREATMENT OF BRUXISM USING THE OCCLUSAL SPLINT (교합안정장치를 이용한 이갈이의 치료)

  • Baik, Byeoung-Ju;Lee, Sun-Young;Yang, Yeon-Mi;Kim, Jae-Gon;Jeon, Young-Mi
    • Journal of the korean academy of Pediatric Dentistry
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    • v.29 no.4
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    • pp.586-591
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    • 2002
  • Bruxism can be generally regarded as a diurnal clenching or nocturnal teeth grinding or a combination of both. Clenching of the teeth is forceful closure of the opposing dentition in a static relationship of the mandible to the maxilla, whereas grinding of the dentition is forceful closure of the opposing dentition in a dynamic maxillo-mandibular relationship as the mandibular arch moves through various excursive positions. The causes of bruxism are not yet discovered clearly, but most consistently mentioned cause is psychological stress. Bruxism can be also associated with sleep disorders, medication, and disturbances of the central nervous system. There is no permanent treatment method of bruxism, so the objectives for management of bruxism are reduction of psychological stress and treatment of signs and symptoms of bruxism by occlusal adjustment, occlusal splint, systemic medication and physical therapy. These cases report present three cases of children with bruxism. The bruxism was reduced in these patients wearing occlusal splint.

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The Development and Application of Standard Diagnostic Table for Astringent Persimmon Management (떫은감 경영 표준진단표의 개발 및 현지 적용)

  • Jeon, Jun-Heon;Lee, Seong-Youn;Lee, Jung-Min;Ji, Dong-Hyun;Oh, Chan-Jin
    • Journal of Korean Society of Forest Science
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    • v.104 no.3
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    • pp.488-494
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    • 2015
  • This study aims to develop and apply a standard management self-diagnostic table for forestry households to better manage their astringent persimmon production. The diagnostic table consisted of 3 categories (general status of a forestry household, management performance indicators, level of management) and 18 subcategories. The current management status across 241 households was surveyed among 10 chief astringent persimmon producing municipalities. Scores from the 18 subcategories were aggregated for a total score to evaluate and compare different levels of management. The respondents scored an overall average of 57.4, 62% of which were placed between 40 and 60. Upon close examination Chungcheongnam-do scored a very low score in the 'management system-tree height' subcategory with respect to the average score potentially because of the large population of aged trees in the region. The national average in the 'production skills-time of fruit load adjustment' subcategory was only 1.96 because unlike sweet persimmons astringent persimmons adjust their own load by inducing physiological fruit drop. The national average in the 'management/sales skills-material purchase' subcategory was 2.01; over 60% of the respondents indicated a preference for independent selection and purchase for most materials. The households preferring a group purchase tended to utilize the regional co-op.

Manifestation of Cognitive Function in Geriatric Patient with Subjective Memory Complaint (주관적 기억력 저하를 호소하는 노인 환자의 인지기능 양상)

  • Park, Han-Kyul;Kim, Jin-Sung;Lee, Jong-Bum;Seo, Wan-Seok;Koo, Bon-Hoon;Bai, Dai-Seg
    • Journal of Yeungnam Medical Science
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    • v.27 no.1
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    • pp.27-36
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    • 2010
  • Purpose : The purpose of this study was to find out cognitive function of the patients with subjective memory complaint. Material and Methods : From March 1st 2005 to May 31st 2009, 155 normal individuals without any medical illness who visited Yeungnam University Hospital to undergo medical checkup with neurocognitive test was enrolled, and checked by using Cognitive Assessment & Reference Diagnostic System. Results : 107 of the patients had normal cognitive function, 21 patients (about 15%) were diagnosed with dementia, and 10 patients (about 7%) were diagnosed with considerable psychiatric illness, such as depression, anxiety disorder, adjustment disorder. In amnesia, agnosia, aphasia, attention, calculation, dysexecution, Dementia group and Psychiatric illness group has worse score than Normal individuals group. But, in apraxia, Dementia group has worse score than Psychiatric illness group and Normal individual group. Conclusion : Because the patients with subjective memory complaint can be diagnosed as any psychiatric illness as well as dementia, sensitive screening test and early psychiatric approach is needed.

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The effect of Life Stress, Cultural Adaptation Stress and Academic Satisfaction in Chinese Students Studying in the Republic of Korea. - Target on Beauty Major College Students. (중국인 유학생의 생활스트레스 및 문화적응스트레스가 학업만족도에 미치는 영향 - 미용전공 대학생을 대상으로)

  • Lim, Sang-Ran;Lee, Ji-An
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.18 no.12
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    • pp.189-199
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    • 2017
  • This study investigated the effects of life stress, cultural adaptation stress, and academic satisfaction amongst a total of 283 20's Chinese students majoring in cosmetology at colleges in Seoul. For this, data was collected from February to March 2017. The frequency analysis was conducted to verity the general characteristic of Chinese student studying in Korea who are study objects while utilizing SPSS Statistics V22.0 for data processing and analysis while the factor analysis and reliability analysis were conducted to investigate the validity of measurement tool and evaluate the reliability. Moreover, the regression analysis between variables and regression analysis were utilized. The results found the following: First, in terms of life stress, as peer relationship, appearance stress, economic stress, family relationship stress and academic stresses decreased, their academic satisfaction increased. Second, regarding cultural adaptation stress, as interpersonal and living culture stresses were lowered, academic satisfaction increased. Therefore, this study targets to derive implications on an efficient plan to improve the academic satisfaction of Chinese students studying in the Republic of Korea by developing and providing a proper academic program with a decent support system in terms of culture, life, and education after investigating their life and cultural adaptation stresses.

Data Process and Precision Analysis of Ship-Borne Gravity (선상 중력자료의 처리 및 정밀도 분석)

  • Keum, Young-Min;Kwon, Jay-Hyoun;Lee, Ji-Sun;Choi, Kwang-Sun;Lee, Young-Cheol
    • Journal of Korean Society for Geospatial Information Science
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    • v.18 no.1
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    • pp.89-97
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    • 2010
  • The ship-borne gravity data is essential to construct geoid in Korea surrounding ocean area. The altimeter data was used in previous study, however, the ship-borne gravity data could be used due to more ship-borne data was collected by improvement of instrument, positioning system. Therefore, the study on verification of precision of ship-borne gravity data and practical usage analysis is needed. In this study, free-air anomaly having 16.47mGal and 18.86mGal as mean and standard deviation was obtained after consistent processing such as Eotvos correction, Kalman Filter, Cross-over adjustment etc. The calculated free-air anomaly was compared to DNSC08 altimeter data and the difference was computed having -0.88mGal and 9.46mGal of mean and standard deviation. The reason causing those differences are owing to spatial limits of data acquisition and effects of ocean topography. To use ship-borne gravity data for precision geoid development, the efforts to overcome the limits of data collection and study for data combination should be proceeded.