WorldWideScience

Sample records for quality circles

  1. Quality Circles

    Science.gov (United States)

    1990-04-09

    spread rapidly through many major Japanese firms. In 1962, Dr. Kaoru Ishikawa tied these new quality control methods to the theories of Maslow , Herzberg...should be on people solving problems and not on hierarchical pyramids of paperwork. 21 6. Management must learn how to positively reinforce participative

  2. The Japanese Quality Control Circle: Why It Works.

    Science.gov (United States)

    Watanabe, Susumu

    1991-01-01

    The competitiveness of Japanese industry is in part because of their quality circles. Despite the West's interest in most Japanese business practices, quality circles have been difficult to transplant. This may be a result of misconceptions about their nature and the erroneous idea that workers' motivation is sociocultural, whereas in fact it is…

  3. Revisiting Cyberbullying in Schools Using the Quality Circle Approach

    Science.gov (United States)

    Paul, Simone; Smith, Peter K.; Blumberg, Herbert H.

    2012-01-01

    An earlier study reported the use of Quality Circles (QC) in a UK school in the context of understanding and reducing bullying and cyberbullying. Here, we report further work in the same school setting. The QC approach allows explorative analysis of problems in school settings, whereby students embark on a problem-solving exercise over a period of…

  4. Revisiting Cyberbullying in Schools Using the Quality Circle Approach

    Science.gov (United States)

    Paul, Simone; Smith, Peter K.; Blumberg, Herbert H.

    2012-01-01

    An earlier study reported the use of Quality Circles (QC) in a UK school in the context of understanding and reducing bullying and cyberbullying. Here, we report further work in the same school setting. The QC approach allows explorative analysis of problems in school settings, whereby students embark on a problem-solving exercise over a period of…

  5. The Quality Circles Organizational Intervention: An Attitudinal Outcome Study

    Science.gov (United States)

    1983-09-01

    communication between themselves and their employees "(Dickson, 1982). Victor Vroom has developed a "normative model" of par- ticipative decision...SECUMIYY CLASSIOPI CAr? MO h LSSR 19-83 THE QUALITY CIRCLES ORGANIZATIONAL INTERVENTION: AN ATTITUDINAL OUTCOME STUDY A Thesis Presented ýo the...democratic style, and a set of seven rules intended to pro- tect both the quality and acceptance of a leader’s decision. -26 Vroom provides a decision

  6. Optimizing care in osteoporosis: The Canadian quality circle project

    Directory of Open Access Journals (Sweden)

    Kvern Brent

    2008-10-01

    Full Text Available Abstract Background While the Osteoporosis Canada 2002 Canadian guidelines provided evidence based strategies in preventing, diagnosing, and managing this condition, publication and distribution of guidelines have not, in and of themselves, been shown to alter physicians clinical approaches. We hypothesize that primary care physicians enrolled in the Quality Circle project would change their patient management of osteoporosis in terms of awareness of osteoporosis risk factors and bone mineral density testing in accordance with the guidelines. Methods The project consisted of five Quality Circle phases that included: 1 Training & Baseline Data Collection, 2 First Educational Intervention & First Follow-Up Data Collection 3 First Strategy Implementation Session, 4 Final Educational Intervention & Final Follow-up Data Collection, and 5 Final Strategy Implementation Session. A total of 340 circle members formed 34 quality circles and participated in the study. The generalized estimating equations approach was used to model physician awareness of risk factors for osteoporosis and appropriate utilization of bone mineral density testing pre and post educational intervention (first year of the study. Odds ratios (OR and 95% confidence intervals (95% CI were calculated. Results After the 1st year of the study, physicians' certainty of their patients' risk factor status increased. Certainty varied from an OR of 1.4 (95% CI: 1.1, 1.8 for prior vertebral fracture status to 6.3 (95% CI: 2.3, 17.9 for prior hip fracture status. Furthermore, bone mineral density testing increased in high risk as compared with low risk patients (OR: 1.4; 95% CI: 1.2, 1.7. Conclusion Quality Circle methodology was successful in increasing both physicians' awareness of osteoporosis risk factors and appropriate bone mineral density testing in accordance with the 2002 Canadian guidelines.

  7. Quality Circles: An Innovative Program to Improve Military Hospitals

    Science.gov (United States)

    1982-08-01

    effective teamwork, (3) promote job involvemenL, (4) increase employee motivation , (5) create a problem-solving capability, (6) build an attitude of...from greater employee motivation and involve- ment in work. Quality Circles (Q.C.’s) are small groups of volunteers from the same work area who meet on...effectiveness Measurable feedback Key people and team members in same area for better personnel management Greater productivity Employee motivation Effective use

  8. Minimalisasi Kekurangan Material Melalui Implementasi Quality Control Circle

    Directory of Open Access Journals (Sweden)

    Togar W. S. Panjaitan

    2011-01-01

    Full Text Available The revolution of traditional quality management concept into total quality management (TQM inspired industry for establishing and implementing quality control circle (QCC. Before starting a project as the implementation of the QCC, the training was held for supporting the knowledge of the QCC team. As the pilot project of the QCC, this research will try to minimize the percentage of the lack material in the production process of 8340 type by working together with the QCC team. The result of QCC implementation could reach the target set by the team, the percentage of the lack material reached less than 3%. The percentage of the lack material kontaktarm reduced from 3.09% to 0.00%, flachdrahtspule reduced from 9.20% to 0.40%, and niet reduced from 7.71% to 2.73%. Besides, the implementation of QCC also resulted in positive impact for all the members of the team about the benefits and experiences gained.

  9. Laying the Groundwork for the Effective Implementation of Quality Circles in a Community College.

    Science.gov (United States)

    Ruff, Dan

    This five-part paper provides an overview of the use of quality circles as a participative management technique in community colleges. Section I offers an introduction to the technique, reviewing the history of quality circles from their development in Japan in the early 1960s to their introduction in American higher education in the early 1980s.…

  10. Peer Evaluation of Master Programs: Closing the Quality Circle of the CDIO Approach?

    DEFF Research Database (Denmark)

    Hussmann, Peter Munkebo; Bisi, Anita; Malmqvist, Johan;

    2012-01-01

    programs within their field at another N5T institution. The article describes the quality enhancement tool in detail, its contribution to the development of the involved programs, and how international peer evaluation can contribute to closing the quality circle. Finally, it assesses the value...... peer evaluations of educational programs to enable their further development and close the quality circle. In addition, the project will contribute to the consolidation of the N5T alliance by facilitating contacts between faculty members and providing them with an in-depth knowledge of the study...

  11. The Influence of Quality Circles on Attitudinal Outcomes Among Civil Engineering Personnel.

    Science.gov (United States)

    1985-09-01

    hygiene factors are related to job context. Herzberg recommends that jobs should be *enriched" by making the work more meaningful and interesting. He...34 Quality Progress, 13: 30-33 (1980b). Crawford, Maj Frederick L. "Quality Circles Results Measurement in the Federal Sector." Report to Air Command

  12. INTEGRATING SIX-SIGMA AND HEALTHCARE QUALITY IMPROVEMENT CIRCLES IN REDUCING THE NEEDLE STICKING

    OpenAIRE

    Sen-Ji Chen; Frank F. C. Pan; Hsuen C. H. Chen

    2008-01-01

    Six-Sigma (SS) is a managerial philosophy used in detecting the error rate of a particular (set) of activities. This research applies six sigma concepts in dealing with troublesome needle-stick events that occurred in a Taiwan hospital. This research integrates several advanced managerial instruments into one framework, grounded in Continuous Quality Improvement and Total Quality Management. This framework combines Six-Sigma and Health Quality Improvement circle practices. The project suggest...

  13. Quality circles to improve prescribing of primary care physicians. Three comparative studies.

    NARCIS (Netherlands)

    Wensing, M.J.P.; Broge, B.; Riens, B.; Kaufmann-Kolle, P.; Akkermans, R.P.; Grol, R.P.T.M.; Szecsenyi, J.

    2009-01-01

    PURPOSE: To determine the effectiveness of quality circles on prescribing patterns of primary care physicians in Germany and to explore the influence of specific factors on changes. METHODS: Three large non-randomised comparative studies were performed in primary care in Germany, with baseline measu

  14. The effect of quality circles on job satisfaction and quality of work-life of staff in emergency medical services.

    Science.gov (United States)

    Hosseinabadi, Reza; Karampourian, Arezou; Beiranvand, Shoorangiz; Pournia, Yadollah

    2013-10-01

    Quality circles, as a participatory management technique, offer one alternative for dealing with frustration and discontent of today's workers. This study was conducted to investigate the effect of implementation of quality circles on nurses' quality of work-life and job satisfaction. In this study, two emergency medical services (EMS) of Hamedan province were selected and randomly assigned as the experimental and control groups. After the experimental group was trained and quality circles were established in this group, the levels of quality of work-life and job satisfaction were measured in the two groups. Then, the statistical analyses were performed using t-test. After the intervention, the results showed significant differences between the scores of motivational factors (p=0.001), the total scores of job satisfaction (p=0.003), and the scores of some quality of work life (QWL) conceptual categories including the use and development of capacities (p=0.008), the total space of life (p=0.003), and the total scores of QWL (p=0.031) in the experimental group compared to those in the control group. This study confirms the effectiveness of quality circles in improving quality of work-life and job satisfaction of nurses working in EMS, and offers their application as a management method that can be used by EMS managers. Copyright © 2012 Elsevier Ltd. All rights reserved.

  15. Using Quality Circles to Enhance Student Involvement and Course Quality in a Large Undergraduate Food Science and Human Nutrition Course

    Science.gov (United States)

    Schmidt, S. J.; Parmer, M. S.; Bohn, D. M.

    2005-01-01

    Large undergraduate classes are a challenge to manage, to engage, and to assess, yet such formidable classes can flourish when student participation is facilitated. One method of generating authentic student involvement is implementation of quality circles by means of a Student Feedback Committee (SFC), which is a volunteer problem-solving and…

  16. Using Quality Circles to Enhance Student Involvement and Course Quality in a Large Undergraduate Food Science and Human Nutrition Course

    Science.gov (United States)

    Schmidt, S. J.; Parmer, M. S.; Bohn, D. M.

    2005-01-01

    Large undergraduate classes are a challenge to manage, to engage, and to assess, yet such formidable classes can flourish when student participation is facilitated. One method of generating authentic student involvement is implementation of quality circles by means of a Student Feedback Committee (SFC), which is a volunteer problem-solving and…

  17. Applying the Advancing Excellence in America's Nursing Homes Circle of Success to improving and sustaining quality.

    Science.gov (United States)

    Bakerjian, Debra; Zisberg, Anna

    2013-01-01

    Looking forward to the Quality Assurance Performance Improvement (QAPI) program to be implemented and required in 2014, and as nursing home staff provide care for residents with increasingly complex health issues, knowledge of how to implement quality improvement (QI) is imperative. The nursing home administrator and director of nursing (DON) provide overall leadership, but it is the primary responsibility of the DON and other registered nurse staff to implement and manage the day to day QI process. This article describes potential roles of nursing leaders and key components of a QI project using a pressure ulcer case study exemplar to illustrate a quality improvement process. The authors suggest specific methods that RN leaders can employ using the Advancing Excellence Campaign Circle of Success as an organizing framework along with evidence-based resources. Nursing home leaders could use this article as a guideline for implementing any clinical quality improvement process. Copyright © 2013 Mosby, Inc. All rights reserved.

  18. [Physicians-pharmacists quality circles: shared responsibility of the freedom of prescription].

    Science.gov (United States)

    Bugnon, O; Jotterand, S; Niquille Charrière, A; Ruggli, M; Herzig, L

    2012-05-16

    Physicians-pharmacists quality circles (PPQCs) were introduced in 1997-98 by visionary healthcare practitioners of the French-speaking part of Switzerland with the aim to improve the quality of drug prescription. Indeed the challenge is to manage the 7917 brand names of the Swiss drug market (2010), including 19793 different dosages, galenic formulations and packaging. The impact of these PPQCs on the containment of drug costs and on drug prescribing profiles has been demonstrated and has led to their spread throughout Switzerland. PPQCs provide clear educational benefits and have thus been accredited by various continuous education bodies. In this article, participating physicians and pharmacists share their vision and illustrate how they work and influence the safety and efficiency of drug prescription, a routine process complex enough to warrant sharing of its burden in a constructive interdisciplinary collaboration.

  19. Quality control circles: will they work at Sandia. Findings from a review of 66 sources

    Energy Technology Data Exchange (ETDEWEB)

    Jeys, G.H.

    1982-01-01

    Quality Control Circles (QCC's) meet regularly to solve limited, but important, problems related directly to their work. The QCC is organized so that the worker becomes involved in problem solving and quality awareness in meaningful and creative ways. Participation is voluntary. This concept has been successfully used in Japan for two decades. QCC's are now being implemented at an accelerating rate world-wide. There are questions as to QCC's applicability in the United States and in particular with respect to an R and D facility such as Sandia. This paper summarizes information about the QCC concept with respect to its implementation and applicability to Sandia. Information was extracted from 66 sources as noted in an Annotated Bibliography. Analysis techniques used by QCC's were utilized in the construction of this paper, especially with the Annotated Bibliography.

  20. The application of quality control circle in neurosurgery ICU nurses in raising compliance of the head of a bed

    Directory of Open Access Journals (Sweden)

    Na LI

    2014-11-01

    Full Text Available Objective: To explore the application of quality control circle in raising compliance of the head of a bed in neurosurgery ICU nurses. Methods: The quality control circle was made up of 4 ICU nurses, determine the subject in order to improve the neurosurgery ICU nurses in raising compliance of the head of a bed, according to the QCC activity steps to formulate plans, including grasp the current situation, goal setting, through analysis, circle members develop strategy and plan implementation and review, finally compared the situation before and after neurosurgery ICU nurses raised bed activities compliance. Results: After implementation of QCC, neurosurgery ICU nurses raised bed to 30 ~ 45 degrees. After activities, circle members in the team cooperation ability, cohesion, to accept new things ability, and innovative thinking ability and to raise the understanding of the relevant knowledge of the head of a bed has improved significantly. Conclusion: The application of quality management circle activity improves the neurosurgery ICU nurses effectively raise the compliance of the head of a bed, improve the comprehensive quality of the clinical nurses.

  1. Quality Circles at Wilford Hall U.S.A.F. Medical Center, Lackland Air Force Base, Texas: Some Preliminary Findings

    Science.gov (United States)

    1982-08-01

    Quality Circles-A Team Approach to Problem Solving. New York: American Management Association, 1981. Herzberg , Frederick . Work and the Nature of Man. New...discouragement or com- 46 pensatory or neurotic trends. Frederick Herzberg’s motivation-hygiene theory is another basic of the human relations process...his need as a human to grow psychologi- cally, Herzberg concluded that certain characteristics tend to be related to job satisfaction and others to

  2. Solving Problems through Circles

    Science.gov (United States)

    Grahamslaw, Laura; Henson, Lisa H.

    2015-01-01

    Several problem-solving interventions that utilise a "circle" approach have been applied within the field of educational psychology, for example, Circle Time, Circle of Friends, Sharing Circles, Circle of Adults and Solution Circles. This research explored two interventions, Solution Circles and Circle of Adults, and used thematic…

  3. Solving Problems through Circles

    Science.gov (United States)

    Grahamslaw, Laura; Henson, Lisa H.

    2015-01-01

    Several problem-solving interventions that utilise a "circle" approach have been applied within the field of educational psychology, for example, Circle Time, Circle of Friends, Sharing Circles, Circle of Adults and Solution Circles. This research explored two interventions, Solution Circles and Circle of Adults, and used thematic…

  4. A quality control circle process to improve implementation effect of prevention measures for high-risk patients.

    Science.gov (United States)

    Feng, Haixia; Li, Guohong; Xu, Cuirong; Ju, Changping; Suo, Peiheng

    2017-06-04

    The aim of the study was to analyse the influence of prevention measures on pressure injuries for high-risk patients and to establish the most appropriate methods of implementation. Nurses assessed patients using a checklist and factors influencing the prevention of a pressure injury determined by brain storming. A specific series of measures was drawn up and an estimate of risk of pressure injury determined using the Braden Scale, analysis of nursing documents, implementation of prevention measures for pressure sores and awareness of the system both before and after carrying out a quality control circle (QCC) process. The overall scores of implementation of prevention measures ranged from 74.86 ± 14.24 to 87.06 ± 17.04, a result that was statistically significant (P control. © 2017 Medicalhelplines.com Inc and John Wiley & Sons Ltd.

  5. Research circles

    DEFF Research Database (Denmark)

    Nordentoft, Helle Merete; Thomsen, Rie; Möller, Jonas

    in career guidance development. In the paper we draw on the preliminary findings from an ongoing Nordic project: “The future of career guidance and educational counselling”. Specifically, we explore the career guidance practitioners´ response to research circles as means to professional development. We......It is key challenge to continuously develop guidance practices to meet participants´ needs and demands from policy makers. The European Lifelong Guidance Policy Network (ELGPN) states that the guidance practitioner and citizens/users should be the focus of development of international and national...... lifelong guidance policies. This paper presents `research circles´ as a way to develop guidance practices through long-term research relationships between practice and research. Research circles support a bottom up approach to policy development just like ELGPN considers to be necessary and required...

  6. Literature Circles.

    Science.gov (United States)

    Katz, Claudia Anne; Kuby, Sue Ann

    2002-01-01

    Describes the use of literature circles, a student-led reading and discussion method that encourages students to see stories in various ways. Explains the student selection of titles, roles of group members, and collaborative projects that complete the activity. (LRW)

  7. The dynamic interaction of quality and efficiency in the emergency department: Squaring the circle?

    Science.gov (United States)

    Nugus, Peter; Braithwaite, Jeffrey

    2010-02-01

    This paper examines the relationship between clinical quality and organizational efficiency in emergency departments (EDs). Previous studies have often emphasized the incompatibility of quality and efficiency, or have neglected to account for their inter-relationships. Policy perspectives reflect normative prescriptions for throughput and reduced waiting times which do not always align with clinicians' foci or day-to-day practices. According to Merton's (1957) theory of "value-assimilation", medical students, for instance, are socialized to reconcile seemingly contradictory values. We aimed to explore ethnographically the possibility of the dynamic interactions of quality and efficiency in clinical practice. This study drew on empirical data from ethnographic field work, conducted over one year, including 234 hours of semi-structured observations and 56 semi-structured field interviews in the EDs of two tertiary-referral hospitals in Sydney, Australia. We found that seniority and experience of emergency clinicians intersect with the functions of role-modeling, performance management, and formal and informal learning, to facilitate the care of multiple patients as they progress through the ED. These practices fundamentally embed quality in the ED's enactment of efficiency. The relationship between clinical quality and organizational efficiency can be understood through a sociological lens that highlights the roles of interdependent clinicians in a clinical pecking order, working to provide care, and balancing the two. The paper is novel in expanding "value-assimilation" into the clinical domain, and strives to reconcile policy with everyday practice in emergency settings. It moves the debate about quality versus efficiency to one that emphasizes interdependence.

  8. Joining the Quality Circle: Developmentally Appropriate Practice in School-Age Care.

    Science.gov (United States)

    Albrecht, Kay

    1993-01-01

    Describes characteristics of a high-quality school-age care program: resourceful, caring staff; recognition of the importance of peers; opportunities for mixed- and same-age grouping; children's selection of activities and experiences; guidance for children's social and emotional development; and environments that encourage a wide variety of…

  9. Small circles

    DEFF Research Database (Denmark)

    Ling, Richard; Bjelland, Johannes; Sundsøy, Pål

    2014-01-01

    This article examines how we use mobile telephony to maintain our physically and socially closest social circle. The analysis is based on traffic data gathered from Norway using approximately 24 million calls and texts made by private individuals. Previous research has shown that our temporal and...... as information and communication technologies (ICTs) potentially put the world at our fingertips, the mobile phone is an instrument of a more limited geographical and social sphere. Approximately two-thirds of our calls/texts go to strong ties that are within a 25-km radius.......This article examines how we use mobile telephony to maintain our physically and socially closest social circle. The analysis is based on traffic data gathered from Norway using approximately 24 million calls and texts made by private individuals. Previous research has shown that our temporal...

  10. 品管圈是改进医疗质量的一个有效工具%My feeling of quality control circle

    Institute of Scientific and Technical Information of China (English)

    张秀荣

    2014-01-01

    目的:探讨品管圈在改进医疗管理质量中的作用及效果。方法:开展品管圈活动,探究医疗管理,医疗服务的变化情况。结果:激发了工作热情,增强了工作积极性,提高了工作效率,同时也促进了医患和谐。结论:品管圈是改进医疗质量的一个有效工具,较为人性化,是一种新型管理模式。%To discuss the role of quality control circle and its effect in health management quality improvement.Methods:To carry out quality management circle activity can explore the medical management and the change of medical services.Results:Stimulated the work enthusiasm, enhanced the work enthusiasm, improved work efficiency,also promoted the doctor-patient harmony.Conclusion: Quality control circle is an effective tool to improve medical quality, and a new type of management mode.It’s more humane.

  11. 品管圈在医院病案信息服务质量管理中的应用%Information Service Quality Improvement of Medical Records with the Application of Quality Control Circle

    Institute of Scientific and Technical Information of China (English)

    明星辰; 方孝梅; 罗勤; 杨骁; 付萍; 邓琼; 吴平勇

    2016-01-01

    Objective To improve the information service quality of medical records as well as increase the satisfaction of the customers through the application of quality control circle. Methods To take the situations before and after the activity of quality control circle as control group and experimental group respectively according to the time order. By compare the score situation of the control group and experimental group,we could explore the effect of the activity of quality control circle to the information service quality of medical records in the hospital. Results After the application of quality control circle,the errors in the information service of medical records were decreased obviously. The minimum progress rate of the visible achievement of three quality control circles was 67.77%,while the maximum rate was 80.95%,the intervention results had statistical significance (P <0.01). Conclusions The application of quality control circle improved the information service quality of medical records obviously,which was beneficial to the sustainable development of information management work.%目的:通过实施品管圈,改善病案信息服务品质,提升顾客满意度。方法根据时间顺序,将开展品管圈活动前的情况作为对照组,开展品管圈活动后的情况作为实验组。通过比较对照组和实验组得分情况,探索品管圈活动对医院病案信息服务质量的影响。结果实施品管圈后,病案信息服务差错显著减少,3个品管圈有形成果方面进步率最低67.77%,最高80.95%,干预结果有统计学意义(P <0.01)。结论实施品管圈改善病案信息服务品质效果显著,有利于病案信息管理工作的持续改进。

  12. 品管圈活动在检验标本分析前质量控制中的应用%The application of quality control circle in the front control quality management of specimen in clinical laboratory

    Institute of Scientific and Technical Information of China (English)

    周丽萌; 徐建萍

    2013-01-01

    Objective: To explore the effect of quality control circle in decreasing the defect rate and improving quality of specimen in clinical laboratory during the pre-analytical phase. Methods: We set up a quality control circle and used professional tools to solve existing problems of specimen in clinical laboratory following the steps of quality control circle in the pre-analytical phase. We compared the data before and after the implementation. Results: The defect rate of specimen in clinical laboratory declined from 0.566% to 0.129% (P<0.001). Conclusion: With the application of quality control circle tools, the defect rate of specimen in clinical laboratory decreases and the ability of professional tools to resolve actual clinical problems improves.%目的:探讨品管圈管理工具在降低检验标本分析前缺陷率,提高标本分析前质量中的应用效果.方法:成立品管圈,通过品管圈活动步骤,运用质量管理常用工具对检验标本分析前存在的问题进行改进,并将改进前、后状况进行比较.结果:临床检验标本缺陷率由实施品管圈活动前的0.566%降低至实施后的0.129%,差异有统计学意义(P<0.001).结论:应用品管圈质量改进工具可有效降低临床检验标本缺陷率,提高圈员运用品管圈管理工具解决临床实际问题的能力.

  13. 品管圈提高产妇纯母乳喂养率的价值探讨%Quality control circle improve maternal exclusive breastfeeding rate value

    Institute of Scientific and Technical Information of China (English)

    陈朝霞

    2016-01-01

    目的:探讨品管圈提高产妇纯母乳喂养率的价值。方法选取我院2014年4月~2015年7月收治产科分娩产妇126例研究对象,将其随机分为对照组和实验组,各63例。对照组采取常规母乳喂养教育与指导,实验组在此基础上实施品管圈活动。对两组产妇的母乳喂养情况进行记录与分析。结果实验组产妇的母乳喂养成功率显著高于对照组,差异有统计学意义(P<0.05);实验组产妇的乳腺炎及乳房胀痛发生率显著低于对照组,差异有统计学意义(P<0.05)。结论对产科产妇在常规母乳教育与指导的基础上实施品管圈活动,能有效提升产妇的产母乳喂养率,对于降低乳腺炎等疾病的发病风险作用重大,值得临床推广。%Objective To study the quality control circle of improving maternal exclusive breastfeeding rate value.Methods Select our hospital 126 cases of maternal obstetric delivery analysis and research, in accordance with the principle of random number average divide the 63 cases of patients as control group and observation group. Control group 63 cases take regular breastfeeding education and guidance, observation group 63 cases on the basis of the implementation of quality management circle activity.On two groups of maternal breastfeeding for recording and analysis.Results Observation group of maternal breastfeeding success rate is signiifcantly higher than the control group,(P< 0.05); Observation group of mastitis and maternal breast tenderness incidence was signiifcantly lower than the control group, (P< 0.05.)Conclusion Of obstetrical maternal in regular breast education and guidance on the basis of the implementation of quality management circle activity, can effectively improve the yield of maternal breastfeeding rate, to reduce the risk of diseases such as mastitis effect, worth clinical promotion.

  14. 品管圈在社区护理质量管理中的实践及效果%Practice and effect of quality control circle in community nursing quality management

    Institute of Scientific and Technical Information of China (English)

    刘卫华

    2016-01-01

    Objective To explore the method and effect of quality control circle activity in community nursing quality management .Methods From January 2015, our hospital in community health service center of nursing quality management work to carry out quality control circle activities .The nursing satisfaction degree of patients and the quality of nursing management were compared with the reference of the work in December 2014. Results After the implementation of the quality control circle , the patient care satisfaction rate (96.2%) was significantly higher than before the implementation ( 87.5%); The nursing staff's writing, health education , nursing skills, service attitude scores were significantly improved .P <0.05, the difference was statistically significant .Conclusions In community nursing quality management , quality management circle activities can improve the quality of care , improve patient care satisfaction degree , it is worth popularizing and applying .%目的:探讨社区护理质量管理工作中开展品管圈活动的方法和效果。方法从2015年1月开始,我院在社区健康服务中心的护理质量管理工作开展品管圈活动。以2014年12月的工作情况作为参考,比较患者的护理满意程度和护理管理质量。结果实施品管圈后,患者护理满意率(96.2%)明显高于实施前(87.5%);护理人员的文书书写、健康教育、护理技能、服务态度评分明显提高。 P<0.05,差异有统计学意义。结论在社区护理质量管理工作中,品管圈活动能够提升护理质量,提高患者的护理满意程度,值得推广应用。

  15. Efficient circle detection by midpoint circle validation

    Institute of Scientific and Technical Information of China (English)

    ZHANG Shuai; CAO Junjie; LIU Xiuping

    2012-01-01

    Circular objects detection in digital images, a vital and recurring problem in image processing and computer vision, has many applications especially aiding vectorization of line drawing images, pupil and iris detection, circular traffic sign detection, and so on. In this paper, we lever Midpoint Circle Algorithm to speed up circle validation with sub-pixel precision. At the same time, we combine the least square method to improve the accuracy of circle detection. Experimental results from tests on synthetic and natural images validate that the proposed technique is efficiency regarding accuracy, speed and robustness.

  16. Knowledge translation on dementia: a cluster randomized trial to compare a blended learning approach with a "classical" advanced training in GP quality circles

    Directory of Open Access Journals (Sweden)

    Rieger Monika A

    2007-06-01

    Full Text Available Abstract Background Thus far important findings regarding the dementia syndrome have been implemented into patients' medical care only inadequately. A professional training accounting for both, general practitioners' (GP needs and learning preferences as well as care-relevant aspects could be a major step towards improving medical care. In the WIDA-study, entitled "Knowledge translation on dementia in general practice" two different training concepts are developed, implemented and evaluated. Both concepts are building on an evidence-based, GP-related dementia guideline and communicate the guideline's essential insights. Methods/Design Both development and implementation emphasize a procedure that is well-accepted in practice and, thus, can achieve a high degree of external validity. This is particularly guaranteed through the preparation of training material and the fact that general practitioners' quality circles (QC are addressed. The evaluation of the two training concepts is carried out by comparing two groups of GPs to which several quality circles have been randomly assigned. The primary outcome is the GPs' knowledge gain. Secondary outcomes are designed to indicate the training's potential effects on the GPs' practical actions. In the first training concept (study arm A GPs participate in a structured case discussion prepared for by internet-based learning material ("blended-learning" approach. The second training concept (study arm B relies on frontal medical training in the form of a slide presentation and follow-up discussion ("classical" approach. Discussion This paper presents the outline of a cluster-randomized trial which has been peer reviewed and support by a national funding organization – Federal Ministry of Education and Research (BMBF – and is approved by an ethics commission. The data collection has started in August 2006 and the results will be published independently of the study's outcome. Trial Registration Current

  17. Knowledge translation on dementia: a cluster randomized trial to compare a blended learning approach with a "classical" advanced training in GP quality circles.

    Science.gov (United States)

    Vollmar, Horst C; Butzlaff, Martin E; Lefering, Rolf; Rieger, Monika A

    2007-06-22

    Thus far important findings regarding the dementia syndrome have been implemented into patients' medical care only inadequately. A professional training accounting for both, general practitioners' (GP) needs and learning preferences as well as care-relevant aspects could be a major step towards improving medical care. In the WIDA-study, entitled "Knowledge translation on dementia in general practice" two different training concepts are developed, implemented and evaluated. Both concepts are building on an evidence-based, GP-related dementia guideline and communicate the guideline's essential insights. Both development and implementation emphasize a procedure that is well-accepted in practice and, thus, can achieve a high degree of external validity. This is particularly guaranteed through the preparation of training material and the fact that general practitioners' quality circles (QC) are addressed. The evaluation of the two training concepts is carried out by comparing two groups of GPs to which several quality circles have been randomly assigned. The primary outcome is the GPs' knowledge gain. Secondary outcomes are designed to indicate the training's potential effects on the GPs' practical actions. In the first training concept (study arm A) GPs participate in a structured case discussion prepared for by internet-based learning material ("blended-learning" approach). The second training concept (study arm B) relies on frontal medical training in the form of a slide presentation and follow-up discussion ("classical" approach). This paper presents the outline of a cluster-randomized trial which has been peer reviewed and support by a national funding organization--Federal Ministry of Education and Research (BMBF)--and is approved by an ethics commission. The data collection has started in August 2006 and the results will be published independently of the study's outcome. Current Controlled Trials [ISRCTN36550981].

  18. Application effects of quality control circle in quality control before analysis of stool and urine specimen%品管圈在大小便标本分析前质量控制中的应用效果

    Institute of Scientific and Technical Information of China (English)

    徐丽雅

    2016-01-01

    目的:通过品管圈活动及管理工具的运用,提高临床大小便标本分析前质量,降低标本收集及送检缺陷率的发生。方法2013年5月成立7人小组的品管圈,通过选定主题、制定活动计划、解析问题、拟定对策、实施措施等步骤,运用质量管理工具对大小便标本分析前存在的诸多原因进行分析,制定流程改善系统,并比较改善前后效果。结果本科室活动改善前大小便标本分析前标本缺陷发生率为1.69%,实施品管圈活动改善后缺陷发生率降至0.62%,完成目标值设定。结论通过品管圈活动干预可有效降低科室大小便标本缺陷发生率,提高送检质量。%Objective To improve the quality control before analysis of stool and urine specimen and to reduce the rate of defect in specimen collection and being submitted for examination by activities of quality control circle and management tools. Methods The quality control circle composed of 7 persons which was established in May 2013. Various reasons existed before analysis of stool and urine specimen were discussed with quality management tools by the process including selecting the topic, drawing up an activity program, explaining problems, generating responses, drafting countermeasures, implementing measures and so on. The system to improve the process was developed. Effects were compared before and after the improvement. Results The rate of defect before analysis of stool and urine specimen was 1. 69% before improvement and was 0. 62% after implementing activities of quality control circle with achieving target values. Conclusions The quality control circle activities can effectively reduce the defect rate of stool and urine specimen and the quality of being submitted for examination.

  19. The effect of quality circle control on the improvement of nursing quality in urological laparoscopic surgery%应用品管圈提高泌尿外科腔镜手术护理质量的实践

    Institute of Scientific and Technical Information of China (English)

    姚艳

    2015-01-01

    Objective To explore the effect and experience of quality control circle in urological laparoscopic surgery management. Methods To establish a"quality control circle"for laparoscopic surgery management, and solve the problems existing. Results Through the activity, the satisfaction rate of operation cooperation increased from 70%to 92%.Conclusion To apply quality control circle to laparoscopic surgery management can not only improve the quality of operation cooperation, but also improve doctors' teamwork spirit.%目的:探讨品管圈在泌尿外科腹腔镜手术管理中的效果与体会。方法成立腔镜手术管理的“品管圈”,通过“品管圈”活动步骤,运用质量管理常用工具,对泌尿外科腔镜手术配合中存在的问题进行改进。结果通过圈员参与该活动,使手术医生对手术配合满意率由70%升高至92%。结论运用“品管圈”的方法进行泌外腔镜手术管理,不仅提高了手术配合质量,而且增强了科室人员的团队精神,充分发挥出护理人员的积极性、创造性和主动性。

  20. 运用品管圈减少乳腺癌化疗患者PICC并发症的观察%EFFECT OF QUALITY CONTROL CIRCLE IN DECREASING THE COMMON COMPLICATIONS OF PICC FOR BREAST CANCER CHEMOTHERAPY

    Institute of Scientific and Technical Information of China (English)

    尹纪娟

    2014-01-01

    目的:探索品质管理圈活动(QCC)在减少乳腺癌化疗患者PICC常见并发症中的作用。方法观察分析品管圈活动开展前后203例乳腺癌化疗患者PICC并发症发生情况。结果乳腺癌化疗患者PICC并发症发生率由实施品管圈管理前的48.5%降低至实施后的12.3%,差异有统计学意义( P <0.05)。结论正确运用品管圈质量改进工具可有效降低乳腺癌化疗患者PICC并发症发生率。%Objective To explore the effect of quality control circle in decreasing the common complica-tion of peripherally inserted central catheter (PICC) for breast cancer chemotherapy .Methods To observe the complications of PICC for 203 patients with breast cancer chemotherapy before and after the quality control circle ( QCC ) . Results T he common complication rate of PICC for breast cancer chemotherapy decreased from 48 .5% to 12 .3% after the application of quality control circle and the differ-ence was significant ( P cation of the quality improvement tool of "quality control circle"could decrease the common complication rate of PICC for breast cancer chemotherapy and improve the ability of the circle members .

  1. 品管圈活动在提高造口患者家属独立佩戴造口袋能力的应用%Quality management circle activity in colostomy patients family members wear made pocket independently

    Institute of Scientific and Technical Information of China (English)

    王超; 孙春华

    2015-01-01

    目的:探讨品管圈在住院造口患者管理中的应用与效果。方法:成立品管圈,按照品管圈实施步骤对科内造口护理现状进行调查,分析住院期间造口患者,其家属自理造口袋能力缺陷原因,制定对策并一一落实。结果:开展品管圈后住院造口患者中,出院前家属独立佩戴造口袋率由40%上升至90%,目标达成率为124%,进步率为125%,圈员8个方面的能力得到提高。结论:品管圈活动有助于提高造口患者护理质量,提高圈员挖掘问题和解决问题的能力,有利于造口护理质量的持续改进。%ObjectiveTo explore quality control circles in the application and effect of colostomy patients in hospital management.MethodsSet up quality control circles, according to the qc circle implementation procedures within the division colostomy care present situation investigation and analysis of colostomy patients during hospitalization, the family self-care ability to build pockets defects reasons, to plan and implement one by one.Results Carry out quality management circle after colostomy patients in hospital, the hospital before the family members of the independent made pocket wear rate from 40% to 90%, the target yield rate was 124%, the progress rate was 125%, the circle part eight aspects ability was improved.ConclusionsQuality management circle activity helps to improve the quality of nursing colostomy patients, improve the circle part mining problem and problem solving ability, is advantageous to the colostomy nursing quality continuous improvement.

  2. Will the circle be unbroken: a history of the U.S. National Ambient Air Quality Standards.

    Science.gov (United States)

    Bachmann, John

    2007-06-01

    In celebration of the 100th anniversary of the Air & Waste Management Association, this review examines the history of air quality management (AQM) in the United States over the last century, with an emphasis on the ambient standards programs established by the landmark 1970 Clean Air Act (CAA) Amendments. The current CAA system is a hybrid of several distinct air pollution control philosophies, including the recursive or circular system driven by ambient standards. Although this evolving system has resulted in tremendous improvements in air quality, it has been far from perfect in terms of timeliness and effectiveness. The paper looks at several periods in the history of the U.S. program, including: (1) 1900-1970, spanning the early smoke abatement and smog control programs, the first federal involvement, and the development of a hybrid AQM approach in the 1970 CAA; (2) 1971-1976, when the first National Ambient Air Quality Standards (NAAQS) were set and implemented; (3) 1977-1993, a period of the first revisions to the standards, new CAA Amendments, delays in implementation and decision-making, and key science/policy/legislative developments that would alter both the focus and scale of air pollution programs and how they are implemented; and (4) 1993-2006, the second and third wave of NAAQS revisions and their implementation in the context of the 1990 CAA. This discussion examines where NAAQS have helped drive implementation programs and how improvements in both effects and air quality/control sciences influenced policy and legislation to enhance the effectiveness of the system over time. The review concludes with a look toward the future of AQM, emphasizing challenges and ways to meet them. The most significant of these is the need to make more efficient progress toward air quality goals, while adjusting the system to address the growing intersections between air quality management and climate change.

  3. Small holding circles

    CERN Document Server

    Fruchard, Augustin

    2010-01-01

    A circle C holds a convex body K if C does not meet the interior of K and if there does not exist any euclidean displacement which moves C as far as desired from K, avoiding the interior of K. The purpose of this note is to explore how small can be a holding circle.

  4. The application of quality control circle(QCC) in improving the basic quality of test%品管圈在提高基础检验质量中的应用

    Institute of Scientific and Technical Information of China (English)

    叶竞争; 叶儒军; 林一民

    2014-01-01

    Objective To study the significance of quality control circle(QCC)in improving the basic quality of test .Methods Using the management tool of QCC and selecting activity theme ,drawing up a plan of QCC to analyse fishbone diagram Plato and countermeasure ,investigating the basic quality confirming the effect ,finally comparing the change of basic quality of test after implementing QCC .Results After implementing QCC activity ,it was found that each index ,including the delay rate of the emergency examination report ,patients′satisfaction degree ,the receiving and registering specimens rate of emergency laboratory ,have been improved with significant difference(P< 0 .05);The ability of circle have been enhanced more than before .Conclusion The quality control circle(QCC)have in‐creased the basic quality of test and promoted the continual improvement of clinical examination .%目的:探讨品管圈(QCC)活动对于提高基础检验质量的意义。方法应用QCC管理工具,选定活动主题,制定品管圈活动计划,进行鱼骨图、柏拉图和对策分析、基础质量调查、效果确认,比较执行品管圈活动前后基础检验质量的变化。结果在施行QCC活动后,急诊检验报告延时率、患者满意度、急诊化验室窗口标本接收登记率等指标均差异有统计学意义(P<0.05);圈能力得到较大提高(P<0.05)。结论 QCC活动提高了基础检验质量,促进了临床检验工作的持续改进。

  5. 品管圈在消毒供应中心器械清洗质量管理中的应用%Application of Quality Control Circle in the Quality Management of Medical Equipment for Disinfection and Supply Center

    Institute of Scientific and Technical Information of China (English)

    顾运珠

    2015-01-01

    Objective: to explore the application effect of quality improvement of the cleaning quality of the disinfection and supply center by the quality of the product.Methods: from february 2014 July through to “improve the cleaning quality of the instruments” as the theme of the product pipe circle activities, using Gantt circle drawn up activity plan is determined, and ifshbone diagram is used to solve the problem. Measures for the implementation of the results conifrm, process standardization, review and improvement.Results: the activity of the activity was signiifcantly improved compared with before the activity, the activity of the defect rate was 4.4%, and the activity was 1.2%.Conclusion: Quality control circle activity increased the quality of medical equipment cleaning, as well as the cohesion of the team.%目的:通过品管圈活动对再生医疗器械的清洗质量分析,探讨品管圈在消毒供应中心清洗质量持续改进中的应用效果。方法本科自2014年2月-7月通过确定以“提高器械清洗质量”为主题的品管圈活动,使用甘特圈拟定活动计划,以及用鱼骨图解决问题,对策实施效果确认,标准化流程,检讨与改进。结果活动后与活动前相比,清洗质量明显提高,活动前缺陷率是4.4%,活动后为1.2%。结论品管圈活动提高了医疗器械清洗质量,以及团队的凝聚力。

  6. Evaluation on the nursing effect of quality control circle activity on hospitalized elderly patients with dementia%品管圈活动对住院老年痴呆患者的护理效果评价

    Institute of Scientific and Technical Information of China (English)

    彭曦; 全映波; 邓静

    2015-01-01

    目的:探讨品管圈活动对住院老年痴呆患者的效果。方法:在住院老年痴呆患者中开展品管圈活动。结果:进行品管圈活动后,患者意外事件发生率显著降低,尤其能明显减少老年痴呆患者摔倒、噎食等,使患者的安全得到了保障,同时也使护理人员的综合素质得到了提高。结论:对老年痴呆患者开展品管圈护理活动,可有效防范护理意外的发生,提高患者的生活质量及住院满意度。%Objective:To investigate the effect of quality control circle activity on hospitalized elderly patients with dementia. Methods:Quality control circle activity was carried out in the elderly patients with dementia.Results:After implement quality control circle activity,the rate of accident occurring in patients reduced significantly,especially falling and choking in elderly patients with dementia decreased significantly,so the patients safety can be guaranteed,and the comprehensive quality of nursing staff also has been improved at the same time.Conclusion:Implementing quality control circle activity on the nursing care of elderly patients with dementia can prevent the occurrence of nursing accidents effectively,and also improve the quality of life and satisfaction of patients.

  7. UPAYA PENURUNAN KEJADIAN KEHILANGAN GELAS BERUKURAN SEDANG MELALUI PENERAPAN METODE QUALITY CONTROL CIRCLE (QCC DI UNIT GIZI, RS ABC, JAKARTA

    Directory of Open Access Journals (Sweden)

    Jonny

    2012-05-01

    Full Text Available Nutrition Department of ABC Hospital provides food and beverage for all inpatients based on nutrition standard from their practioners. Therefore, Nutrition Department needs several types of cutlery for serving them food and beverage as needed. The stock of these types of cutlery should be maintained by nutrionists. During August and September 2011, the stock of middle-sized glasses had been deficit. This condition made the Nutrition Department initiate a QCC group named Sushi to prevent the deficit by strengthening the control over the stock. After this improvement, they had successfully suppressed the deficit from 193 to 77 units or 60.10%. Due to hospital regulation that every lost should be redeemed by nutritionist, this improvement had also enable the department to suppreesed the cost of lost units (quality cost.

  8. QCC活动在儿科病房静脉输液穿刺中的推广应用%The application of Quality Control Circle on intravenous in the pediatric ward

    Institute of Scientific and Technical Information of China (English)

    戴可蓉; 冯佳俊

    2014-01-01

    Objective: To explore the effect of quality control circle i on intravenous in the pediatric ward. Methods: The quality control circle team reviewed 240 hospitalized patients in the pediatric ward from March 2012 to September 2012,analyzed intravenous causes, set the goals, develop counter measures, put them into effect, and confirmed the intravenous success rate of hospitalized patients after the application of quality control circle from March 2012 to September 2012. Result: The intravenous success rate of hospitalized patients increased from 79.58% to 96.67% after the application of quality control circle and the difference was significant (P<0.05). Conclusions: The application of the quality improvement tool of"quality control circle" could increase the intravenous success rate of hospitalized patients and improve the ability of the circle members.%目的:探讨QCC在儿科病房静脉输液穿刺中的应用效果。方法:成立品管圈,在儿科病房静脉输液穿刺管理中融入品管圈的手法和技巧,对儿科病房静脉输液穿刺中存在的问题进行改进,并将改进前后状况进行比较。结果:儿科病房静脉输液穿刺一次成功率由79.58%升至96.67%。护士专业知识得到加强,沟通协调能力提高,工作幸福感、积极性及科室团队凝聚力大幅上升,圈员运用QCC的能力从0分上升到5分。结论:运用QCC对注射室进行管理,不仅降低了差错率,节省了医院开支,还提高了护理队伍的整体素质。

  9. 品管圈活动在检验标本分析前质量控制中的应用%Application of Quality Control Circle in the Quality Control of Test Speci-mens before Analysis

    Institute of Scientific and Technical Information of China (English)

    段文丽

    2016-01-01

    Objective To research the effect of quality control circle in reducing the unqualified rate of test specimens be-fore analysis and provide effective basis for improving the quality of test specimens before analysis. Methods The specimen data with unqualified test results in our hospital from January 2016 to March 2016 were collected and statistically analyzed, and the unqualified ratio was calculated, and then the quality control circle group was established, and the activities in each phase of test specimens before analysis were analyzed by applying related management tools, and the unqualified reasons of specimens were analyzed, and the related measures were made for its reasons thus improving the quality of test specimens before analysis. Results 7014 cases of test specimens were collected before the quality control circle was implemented (from January 2016 to March 2016 ) including 39 cases of specimens with quality defect, and the unqualified rate was 5.56译, and 5417 cases of specimens were collected (April 2016 to June 2016) including 7 cases of specimens with defect, and the unqualified rate was 1.29 ‰, and the incidence rate of unqualified specimens obviously deceased compared with that before implementation, and the difference had statistical significance,P<0.001. Conclusion The quality control circle can improve the quality of test specimens before analysis, which is of important guidance significance to solving the clinical problems.%目的:研究“品管圈”活动用于降低检验标本分析前不合格率的效果,为提升检验标本分析前的质量提供有效的依据。方法收集该院2016年1-3月间检验结果不合格的标本资料,对其进行统计学分析,计算不合格比例。之后成立品管圈活动小组,应用相关的管理工具,解析检验标本分析前的各阶段活动,分析标本检验不合格的原因,针对其原因制定相关措施,提升检验标本分析前的质量。结

  10. Quality Control Circle of Standard Management of Ambulance%提高抢救车规范管理达标率的品管圈实践

    Institute of Scientific and Technical Information of China (English)

    刘晓梅; 张国梅; 邵继凤; 张玉莲; 刘红梅

    2016-01-01

    Objective To explore the practice and effect of quality control circle (QCC) in the standard management of ambulance. Methods A QCC team was established then improvement measures were formulated after the analysis of the reasons for non-standard management of ambulances then the effect of 6-month practice was assessed. Results The rate of standard management of ambulance was improved from 49% to 79% after QCC practice and memebers in QCC team regarded that the practice benefited the improvement of management awareness and working ability. Conclusion QCC practice benefits the management of ambulances and the improvement of QCC team members ’ ability, which promotes nursing management and nursing quality.%目的:探讨品管圈活动在抢救车规范管理中的实践和效果。方法成立品管圈小组,应用品管圈活动步骤,对全院57辆抢救车管理不规范原因进行分析,制定改进措施,规范抢救车管理,实施6个月后评价效果。结果实施品管圈活动后,抢救车规范管理达标率由活动前的49%提高到活动后的79%,圈员认为本次品管圈活动提升了参与管理的意识和工作能力。结论开展品管圈活动规范了全院抢救车的管理,提高了圈员能力,对提高精细化管理水平、提升护理质量起到了积极推动的作用。

  11. The application of Quality Control Circle in the nursing admission assessment list on writing%品管圈活动在护理入院评估单书写中的应用

    Institute of Scientific and Technical Information of China (English)

    何凤益; 李艳

    2014-01-01

    Objective:To investigate the application effect of Quality Control Circle in the nursing admission assessment list on writing.Methods:Set up Quality Control Circle activity groups ,Investigate the status quo, analyzes the reason of the defects on Liver and gallbladder surgery nursing admission assessment single writing,Find out the main reason,Formulate corresponding countermeasures and implementation. Results:Quality Control Circle Make the nursing admission assessment sheet writing qualified rate increased from 88.08%to 94.6%. Conclusion:The effect of Quality Control Circle in raising the quality of nursing admission assessment list writing is remarkable,and it is worth popularization and application.%目的:探讨品管圈活动在提高护理入院评估单书写质量中的应用效果。方法:成立品管圈活动小组,进行现况调查,分析导致肝胆外科护理入院评估单书写缺陷的原因,通过筛选,找出主要原因,制定相应的对策并实施。结果:品管圈活动使护理入院评估单书写合格率从88.08%提高到94.6%。结论:品管圈活动在提高护理入院评估单书写质量方面效果显著,值得推广应用。

  12. Groups of Circle Diffeomorphisms

    CERN Document Server

    Navas, Andrés

    2011-01-01

    In recent years scholars from a variety of branches of mathematics have made several significant developments in the theory of group actions. Groups of Circle Diffeomorphisms systematically explores group actions on the simplest closed manifold, the circle. As the group of circle diffeomorphisms is an important subject in modern mathematics, this book will be of interest to those doing research in group theory, dynamical systems, low dimensional geometry and topology, and foliation theory. The book is mostly self-contained and also includes numerous complementary exercises, making it an excell

  13. 品管圈活动在降低初产妇会阴侧切率中的应用%Application of quality control circle activity in lowering primiparas’lateral episiotomy rate

    Institute of Scientific and Technical Information of China (English)

    陆影仪

    2016-01-01

    Objective:To explore the application effect of quality control circle activity in lowering primiparas’lateral episiotomy rate. Methods:Selected 3147 primiparas before the conduction of quality control circle activities(January 2013 - December 2013)as control group,and selected 3569 primiparas after the conduction of quality control circle activities(March 2014 - March 2015)as observation group. Observed the lateral episiotomy rate of primiparas in the two groups. Results:The lateral episiotomy rate of the observation group was 32. 28% ,which was lower than the 57. 64% of the control group,and the comparison between the two groups was of statistical significance(P < 0. 05). Conclusion:Quality control circle activity can effectively reduce premipa-ras’lateral episiotomy rate.%目的:探讨品管圈活动在降低初产妇会阴侧切率中的应用效果。方法:将开展品管圈活动前(2013年1~12月)选取的3147例初产妇作为对照组,将开展品管圈活动后(2014年3月~2015年3月)选取的3569例初产妇作为观察组。观察两组产妇会阴侧切率。结果:观察组会阴侧切率为32.28%,低于对照组的57.64%,两组比较有统计学意义(P <0.05)。结论:品管圈活动能有效降低初产妇会阴侧切率。

  14. 急诊科品管圈管理的应用价值%Application value of quality control circle management of emergency department

    Institute of Scientific and Technical Information of China (English)

    邓昊

    2016-01-01

    目的:探讨品管圈管理对急诊患者优质护理服务的影响。方法共纳入2014年6月至12月500例急诊患者作为对照组,同时应用QCC的管理理念和先进的管理方法选择2015年1月至6月500例急诊患者作为观察组,比较两组患者对护理服务的评价,并对无形成果进行分析。结果观察组患者对护理服务的满意率及满意度评分明显高于对照组(P<0.05)。观察组护理人员无形成果责任心、自信心、积极性、沟通能力及解决问题能力评分均高于对照组(P<0.05)。结论急诊实施QCC管理不仅有效提升了优质护理服务质量,提高了急诊患者对护理的满意度,而且无形中提高了急诊护理人员多方面的能力,为以后更好的服务患者打下基础。%Objective to explore effect of quality control circle management on quality nursing service of emergency patients. Methods 500 cases emergency patients were included in control group from June 2014 to December 2014, and choose 500 cases emergency patients with QCC management concepts and advanced management methods from January 2015 to June 2015 as observation group. Compare nursing service evaluation of two groups and analyze the intangible results.Results satisfaction rate and degree scores of observation group were significantly higher than control group for nursing service(P<0.05). Nursing staff of observation group had higher scores than than control group with invisible achievement of responsibility, self-confidence, enthusiasm, communication skills and problem-solving ability scores (P<0.05).Conclusion applying QCC management not only can effectively improve quality nursing service for emergency department and emergency patients satisfaction for nursing, but improve intangible abilities of nursing staff of emergency department, which will a lay a better basis for service to patients.

  15. Domain Discretization and Circle Packings

    DEFF Research Database (Denmark)

    Dias, Kealey

    A circle packing is a configuration of circles which are tangent with one another in a prescribed pattern determined by a combinatorial triangulation, where the configuration fills a planar domain or a two-dimensional surface. The vertices in the triangulation correspond to centers of circles......, and edges correspond to two circles (having centers corresponding to the endpoints of the edge) being tangent to each other. This circle packing creates a rigid structure having an underlying geometric triangulation, where the centers of circles again correspond to vertices in the triangulation......, and the edges are geodesic segments (Euclidean, hyperbolic, or spherical) connecting centers of circles that are tangent to each other. Three circles that are mutually tangent form a face of the triangulation. Since circle packing is closely related to triangulation, circle packing methods can be applied...

  16. Application status of quality control circle in improving nursing quality%品管圈在改善护理品质中的应用现状

    Institute of Scientific and Technical Information of China (English)

    郝贵枝

    2014-01-01

    This article reviews application status of QCC activities in development and quality management in the nursing work, including nursing security management, nursing quality management, health education, and quality of care, disinfection and isolation of these aspects.%对品管圈活动在护理工作中如何开展以及进行品质管理的应用现状进行综述,包括护理安全管理、护理质量管理、健康教育,优质护理服务、消毒隔离这些方面。

  17. Discussion on Quality Control Circle Activities in Reducing the Accidental Extubation of Central Venous Indwelling Catheter%品管圈活动在降低中心静脉置管意外拔管中的探讨

    Institute of Scientific and Technical Information of China (English)

    梁青; 杨柠

    2014-01-01

    目的:探讨品管圈活动在降低中心静脉置管非计划拔管中应用的效果及分析。方法:成立品管圈小组,运用PDCA的品管手法及各种品管工具,对ICU危重患者中心静脉置管的非计划拔管进行现状调查,通过头脑风暴,对中心静脉置管的非计划拔管进行要因分析,设定目标,制定相应的对策,采取有效的措施进行持续质量改进。结果:通过品管圈活动,中心静脉置管的非计划性拔管率从6.13%降至2.46%。结论:品管圈活动对降低ICU危重患者的中心静脉置管在可留置时间内非计划性拔管效果显著,降低了中心静脉置管的意外管率,规范了操作流程,确保了患者安全,提高了护理质量。%Objective:To investigation the application effect and analysis of the quality control circle activities in reducing the unplanned extubation of central venous indwelling catheter.Method:The quality control circle group was set up,and the situation of unplanned extubation of central venous indwelling catheter in ICU serious illness patients were investigated by the PDCA quality management methods and tools of quality.Through brainstorming,the factors of the unplanned extubation in central venous indwelling catheter were analyzed,set goals,formulated corresponding countermeasure,taken effective measures for continuous quality improvement.Result:Through quality management circle activities,the rate of the unplanned extubation of central venous indwelling catheter from 6.13% to 2.46%.Conclusion:The quality control circle activities in reducing the unplanned extubation effect in dwelling time of ICU serious illness patients in central venous indwelling catheter is remarkable,reduce the accident incidence of central venous indwelling catheter,standardize the operation process,ensure patient safety and improve the nursing quality.

  18. 培训者培训模式在品管圈活动培训中的应用效果%Application of training the trainers model in quality control circle training

    Institute of Scientific and Technical Information of China (English)

    邓俊; 潘义生; 王晓月; 程海丹; 周雅涛; 袁翠; 李晶; 钱晶京; 刘霞; 丁炎明

    2016-01-01

    Objective To explore the effects of the training the trainers model in the quality control circle training.Methods According to the training the trainers model, 27 nurses were involved as trainers and received quality control circle training by 6 mentors from 2013 to 2015. The training capacity of trainers and the training effect of the target group were assessed before and after training. The lasting effect after training were evaluated.Results The self-assessment score of 6 trainers′ training capacity after training (4.30±0.54) was significantly higher than before training (1.41±0.50) (t=-19.98, P<0.01). The self-assessment score of 189 circle members′ training capacity after training ( 27. 51 ± 4. 19 ) was significantly higher than before training (20.52±4.56) (t=-18.722, P<0.01). The percentage of nursing staff participating in the quality control circle significantly increased from 2.8% to 12.4% after the whole process (χ2=226.378, P<0.01).Conclusions The training the trainers model is effective in improving training capacity of trainers in quality control circle training and increasing effects of quality control circle training among target nurses and is an effective model in training quality control circle on nurses.%目的:探索应用培训者培训模式进行护理品管圈活动培训的效果。方法2013—2015年采用培训者培训模式由6名培训导师对27名培训者进行品管圈活动培训;培训前后分别评估培训者二次培训能力和目标群体的培训效果,评估培训后的后续效果。结果培训后6名培训者二次培训能力自评总得分(4.30±0.54)分,高于培训前(1.41±0.50)分,差异有统计学意义(t=-19.98,P<0.01);参与各品管圈的189名圈员目标群体培训效果自评总得分(27.51±4.19)分,高于培训前(20.52±4.56)分,差异有统计学意义( t=-18.722,P<0.01);培训前后品管圈活动的全院覆盖率从2.8%提高至12.4%,培训前后比

  19. Application of quality control circle activities in improving the qualified rate of outpatient prescriptions%品管圈活动在提高门诊处方合格率中的应用

    Institute of Scientific and Technical Information of China (English)

    黄秋红; 聂增尧; 白翠莲

    2016-01-01

    目的:运用品管圈管理工具,提高昌平教学医院门诊处方合格率。方法:成立品管圈,分析门诊处方合格率低的原因,制定相应整改措施并组织实施,评价有形成果和无形成果,制定标准化工作流程。结果:通过品管圈活动,有形成果即门诊处方合格率由活动前72.83%提高到活动后84.20%;无形成果即药师的沟通能力、解决问题能力、自信心等有较大提高。结论:品管圈活动在提高门诊处方合格率中的应用,取得较好效果,建议推广使用。%Objective:To use quality control management tools in order to improve qualified rate of outpatient prescriptions. Methods:Quality management circle was set up and the reasons accounting for low qualiifed rate of outpatient prescriptions were analyzed. Corresponding corrective measures were made and results were evaluated to implement standardized work processes.Results:Through quality management circle activity, qualiifed rate of outpatient prescription increased from72.83% to 84.2%. Communication skills, problem solving skills, self-conifdence of pharmacists have improved greatly.Conclusion: Quality control circle activities in improving the qualiifed rate of outpatient prescription application achieved good effect and it’s recommended to promote application.

  20. Going Round in Circles

    Science.gov (United States)

    Clausen-May, Tandi

    2006-01-01

    In this article, the author describes two Powerpoint presentations designed to help visual learners calculate the circumference and the area of a circle. In particular, the author describes how these presentations can be used to establish mental images that can help pupils to understand, and so recall, the principles that underlie the formulae for…

  1. Literature Circles in ELT

    Science.gov (United States)

    Shelton-Strong, Scott J.

    2012-01-01

    While the intrinsic value of reading extensively for L2 learners has rarely been questioned, practicalities of implementation and the existence of gains beyond lexical enrichment have generated discussion. This article outlines and explores the benefits which Literature Circles (LCs) offer to English language learning and attempts to identify…

  2. General minisum circle location

    DEFF Research Database (Denmark)

    Körner, Mark; Brimberg, Jack; Juel, Henrik

    2009-01-01

    In our paper we approximate a set of given points by a general circle. More precisely, we consider the problem of locating and scaling the unit ball of some given norm k1 with respect to xed points on the plane such that the sum of weighted distances between the circle and the xed points is minim......In our paper we approximate a set of given points by a general circle. More precisely, we consider the problem of locating and scaling the unit ball of some given norm k1 with respect to xed points on the plane such that the sum of weighted distances between the circle and the xed points...... is minimized, where the distance is measured by a norm k2. We present results for the general case. In the case that k1 and k2 are both block norms, we are able to identify a nite dominating set in R3 for the problem, which can be obtained as the intersection of cones....

  3. Differentiating through Literature Circles

    Science.gov (United States)

    Helgeson, John

    2017-01-01

    This article begins with an example of a typical middle-school experience with literature circles. Students read a common text and come prepared to share and discuss the text based on individual roles they are assigned. Teachers are using this practice to address the complexity levels of texts in order to help students develop the skills they need…

  4. Use of quality control circle to reduce incidence of occupational exposure among health care workers of operating rooms%应用品管圈降低手术室医护人员职业暴露研究

    Institute of Scientific and Technical Information of China (English)

    王立军; 高洋; 杨庆艳; 刘焕生; 邱枫; 孙长江

    2015-01-01

    OBJECTIVE To reduce the incidence of occupational exposure among the health care workers of operat‐ing rooms through the quality control circle activity .METHODS The quality control circle group was established ,′to reduce the incidence of occupational exposure among the health care workers of operating rooms′was set as the theme ,the basic tools for comprehensive quality management ,including the PDCA cycle ,brainstorming ,affinity diagram ,checklist ,Gantt chart characteristics to the chart (fishbone diagram) ,and Plato ,were employed to ana‐lyze the current status and causes ,and the countermeasures were formulated and implemented for the quality con‐tinuous improvement .RESULTS The incidence of occupational exposure among the health care workers of operat‐ing rooms was decreased by 69 .5% after the quality control circle activity was conducted in 2014 .The circle mem‐bers showed positive improvement of ability of solving problems ,responsibility ,coordination ability ,self‐confi‐dence ,team cohesiveness ,and enthusiasm .CONCLUSION The quality control circle activity can not only minimize the physical and mental harms induced by the occupational exposure but also improve the quality management abili‐ty and enthusiasm of the circle members .%目的:通过品管圈小组活动,降低手术室医护人员职业暴露的发生率。方法成立品管圈小组,确定以“降低手术室医护人员职业暴露发生率”为主题利用全面质量管理的PDCA循环法、头脑风暴法、亲和图、查检表、甘特图、特性要因图(鱼骨图)、柏拉图等基本工具进行现状及原因分析,拟定对策、组织实施,进行持续质量改进。结果与品管圈活动开展前相比,2014年手术室医护人员职业暴露发生率较2013年下降69.5%;圈员解决问题能力、责任心、沟通协调能力、自信心、团队凝聚力、积极性6个方面均出现了正向的增长。结论通过品管

  5. 品管圈在提高护士P DA使用率中的应用%The efffect of quality control circle(QCC) in improving the utilization of personal digital assistant(PDA) in nurse

    Institute of Scientific and Technical Information of China (English)

    周萍

    2015-01-01

    目的:探讨品管圈在提高护士PDA使用率的应用效果。方法成立品管圈活动小组,运用品质管理手段管理护士PDA (Personal Digital Assistant,即个人数码助理)的使用。结果实施品管圈活动后,护士PDA执行率由活动前的63.6%提高到活动后的85.5%,差异具有统计学意义( P<0.05)。结论正确运用品管圈可明显提高护士PDA使用率,提高圈员综合能力。%Objective To evaluate the effect of quality control circle( QCC) in improving the utilization of personal digital assistant( PDA) in nurses.Methods Establish a QCC team,and use quality control methods to manage the utilization of PDA in nurses.Results After carrying out QCC activities,the utilization rate of PDA in nurses increased from 63.3% to 85.5%,and the difference had statistical significance( P<0. 05).Conclusion Quality Control Circle could improve the utilization of PDA in nurses significantly,and it could also improve the compre⁃hensive ability of team member.

  6. To reduce the incidence of eyedrops missed through Quality Control Circle activity%"品管圈"活动降低点眼药水漏点率的效果观察

    Institute of Scientific and Technical Information of China (English)

    郭露露; 龚咏梅

    2015-01-01

    目的:运用品管圈活动方法,探索降低点眼药水漏点率.方法:由8名护士组成品管圈,回顾分析发生的漏点眼药水事件原因,制定对策,进行效果评价.结果:通过品管圈的活动,眼药水的漏点率活动后明显下降;患者满意度提高.结论:开展品管圈活动保证了用药安全,并提高了护理质量.%Objective:To reduce the incidence of eyedrops missed through Quality Control Circle ( QCC) activity . MethodS:8 nurses organized Quality Control Circle,Retrospective analysis incident reason of eyedrops missed, and To formulate the corresponding countermeasure .Then evaluate the effect. Result:the rate of of eyedrops missed decreased significantly after the activity,and patient satisfaction Improved. Conclusion:activities of"QCC"to ensure that the drug safety, and improve the quality of care.

  7. Layered circle packings

    Directory of Open Access Journals (Sweden)

    David Dennis

    2005-01-01

    Full Text Available Given a bounded sequence of integers {d0,d1,d2,…}, 6≤dn≤M, there is an associated abstract triangulation created by building up layers of vertices so that vertices on the nth layer have degree dn. This triangulation can be realized via a circle packing which fills either the Euclidean or the hyperbolic plane. We give necessary and sufficient conditions to determine the type of the packing given the defining sequence {dn}.

  8. A game magically circling

    DEFF Research Database (Denmark)

    Ejsing-Duun, Stine

    2011-01-01

    This chapter analyses the relationship between players, the game world, and the ordinary world in alternative reality games (ARGs) and location-based games (LBGs). These games use technology to create a game world in the everyday scene. The topic of this chapter is the concept of the 'magic circle......', which defines the relationship between play and the ordinary world, and how this concept relates to a new kind of game....

  9. A game magically circling

    DEFF Research Database (Denmark)

    Ejsing-Duun, Stine

    2011-01-01

    This chapter analyses the relationship between players, the game world, and the ordinary world in alternative reality games (ARGs) and location-based games (LBGs). These games use technology to create a game world in the everyday scene. The topic of this chapter is the concept of the 'magic circle......', which defines the relationship between play and the ordinary world, and how this concept relates to a new kind of game....

  10. 品管圈对降低会阴侧切率促进自然分娩的临床探讨%The clinical study of quality control circles on the reduction of episiotomy rate to promote natural childbirth

    Institute of Scientific and Technical Information of China (English)

    彭慧玲; 刘艳玲; 严彩玲

    2016-01-01

    目的:探讨品管圈在促进自然分娩降低会阴侧切率的临床应用效果,为制定护理措施及质量控制指标提供依据。方法:成立品管圈,以回顾分析的方法对2013年4~6月分娩的低危初产妇92例及成立品管圈后2015年4~6月分娩的低危初产妇106例的侧切率及相关指标进行统计及分析。结果:会阴侧切率由成立品管圈前的48.91%降至品管圈成立后的18.87%,差异有统计学意义(P<0.01);品管圈成立前后会阴Ⅱ度及Ⅲ度裂伤发生率差异无统计学意义(P>0.05)。结论:品管圈对护理服务理念、助产技术和管理制度等方面进行改善,可显著降低初产妇会阴侧切率,同时并未增加会阴Ⅱ度及Ⅲ度裂伤发生率,从而有效保障产妇生殖健康,促进自然分娩。%Objective Discusses the clinical application of quality control circles on the reduction of episiotomy rate to promote natural childbirth, to provide evidence for nursing measures and quality control index.Method Set up quality control circles, using retrospective analysis method to statistic and analysis the episiotomy rate and relevant indicators of the delivery in April to June 2013 low-risk primipara 92 cases and the delivery in April to June 2015 low-risk primipara 106 cases.Results Episiotomy rate from 48.91% before set up quality control circle fell to 18.87% of the quality control circle after the establishment, the difference was statistically significantP0.05 .Conclusion Quality control circle can improve the nursing service concept, and the skills of midwifery and the management system. It can significantly decrease the rate of primipara episiotomy, at the same time does not increase incidence of perineumⅡ degree and Ⅲdegree laceration, thus effectively protect maternal reproductive health, promote natural delivery.

  11. 品管圈活动对提高产妇母乳喂养率的效果观察%Effect observation of quality control circle activities in the improvement of maternal breastfeeding rate

    Institute of Scientific and Technical Information of China (English)

    喻芳; 于建萍

    2014-01-01

    目的:关爱宝宝健康,促进母乳喂养。方法:建立品管圈,并根据进度表开展活动。结果:引用品管圈后,母乳喂养率由86.7%上升到98.3%。产妇及家属的满意度由86.7%上升到91.7%。结论:品管圈改进了母乳喂养率的护理流程,有助于促进护理工作标准化建设。%Objective:Taking care of the baby health,to promote breast feeding.Methods:Quality control circle was seted up and the activity was carried out according to the schedule.Results:The breastfeeding rate was improved from 86.7% to 98.3% . Maternal satisfaction was improved from 86.7% to 91.7%.Conclusion:The quality control circle improved the nursing process of mother's milk feeding rate, and help to promote nursing standardization construction.

  12. 品管圈用于提高门诊西药房药品质量管理实践%Application of Quality Control Circle for Improving Drug Quality Management in Outpatient Western Medicine Pharmacy of Our Hospital

    Institute of Scientific and Technical Information of China (English)

    李杨华; 周祖萍

    2015-01-01

    目的:提高门诊西药房药品质量管理水平。方法根据门诊患者满意度调查表,收集患者意见,其中81.2%的不满因药品管理不善导致。采用头脑风暴法分析导致药品质量的原因,为药品潮解、药品失效、冷藏药品没按贮藏条件冷藏。按照品管圈的十大步骤实施各项活动,拟订活动计划、拟订对策及实施,评价有形成果(药品质量管理提高)和无形成果(圈能力),制订标准化工作流程。结果药品潮解主要是因协定处方及拆零片剂所致;药品失效主要是因药师工作责任心不强,积压药品所致;冷藏药品未冷藏保管主要因冷藏药品品种多、数量大、冰柜少所致。针对以上原因,采取协定处方标准化分装,请领药品规范化,冷藏药品采取少量多批领取并增加冷柜的方法,对药师增强工作责任心等系列措施。活动后潮解药品由活动前的13次下降到5次,失效药品由活动前的5次下降到2次,冷藏管理药品由活动前的16次下降到6次;同时圈员们的工作积极性、团队凝聚力、解决问题的能力等方面均有大幅提高。结论品管圈管理模式的应用,可提高医院门诊西药房的药品质量管理水平。%Objective To improve the drug quality management of outpatient western medicine pharmacy. Methods The opinions of pa-tients were collected according to the outpatient satisfaction questionnaire, in which 81. 2% was caused by the drugs mismanage-ment. The brainstorming method was adopted to analyze the causes leading to the drug quality problems, including the drug deliques-cence, drug invalidation and cold storage of refrigerated drugs without according to storage conditions. The various activities were imple-mented according to 10 steps of quality control circle ( QCC ) , the plan, countermeasures and implementation of activities were protocolled, the tangible results ( improvement of drug

  13. Circle of Form

    DEFF Research Database (Denmark)

    Jaeger, Thomas Arvid

    2012-01-01

    a common professional language like in mathematics, colour and music. The result is a weaker professionalism in the aesthetic competences compared to the professionalism and competences in other areas. A research project [1] on contrasts or opposites in form investigated the phenomenon in the fields...... by this model, and using the knowledge gathered from the other areas, especially perception psychology, it showed to be a possible way to organize contrasts in form, a system of 4 different opposites, geometric, organic, mass and structure: The Circle of Form....

  14. The circle of carnival

    Directory of Open Access Journals (Sweden)

    Gianluca Olcese

    2009-01-01

    Full Text Available Myths, symbols and rituals of carnival survive from ancient times, preserving their affinities among different cultures: Carnival is strictly connected with agricultural life: each of its manifestations is provided to propitiate growth and health. As nature follows a circle through the rhythm of the seasons, carnival expresses the circularity of the process of birth, death and regeneration. The psychological and anthropological analysis and both historical and geographical comparison of its different aspects, permits to explain the process that led carnival to its actual reality.

  15. Application of Quality Control Circle Activitiesi n Reducing Risk of Medical Equipment%品管圈活动在降低医疗设备应用风险中的应用

    Institute of Scientific and Technical Information of China (English)

    路鹤晴; 王文刚; 严浩; 苏琦

    2015-01-01

    To reduce the error rate and application risk, as well as to increase the safety and quality of medical equipment in work, a quality control circle with PDCA method was performed in the study.Based on prac-tical situation analysis in hospitals and some methodological measures, we made perfections and improvement for maintenance species and items of medical equipment in hospital following the basic steps:group ringing, theme se-lecting, planning, situation confirming, goals setting and analyzing, countermeasures proposing, implementing and discussing, results confirming, standardization, reviewing and improving.Based on the quality control circle we performed, the maintenance and perfectness rate of medical equipment was improved, and ultimately a medical equipment maintenance and quality control system was established.%为降低医疗设备的故障率和应用风险,提高医疗设备的应用安全与质量,本文通过品管圈活动,采用PDCA方法,结合医院医疗设备的实际情况,按照组圈、主题选定、计划拟定、现状把握、目标设定、解析、对策拟定、对策实施与讨论、效果确认、标准化、检讨与改进等品管圈活动的基本步骤,对全院医疗设备维护种类和维护项目进行完善和改进,提高医疗设备的维护保养率和完好率,构建医疗设备维护保养和质量控制体系。

  16. 运用品管圈质量改进工具降低住院患者跌倒发生率的实践%The practice of applying quality improvement tool of "quality control circle" to decrease the fall rate of hospitalized patients

    Institute of Scientific and Technical Information of China (English)

    蔡学联; 郑芝芬; 唐晓英; 孙香爱; 裘文娟; 贾勤; 杜丽萍; 裘丹英

    2011-01-01

    目的:探索品管圈活动在降低住院患者跌倒发生率中的作用.方法:根据患者跌倒报告表,回顾2006年1月至2008年9月该院39例住院患者跌倒状况,通过分析原因、设定目标、制定并实施对策等品管圈活动,确认运用品管圈管理力法后(2009年1月至2011年9月)该院住院患者跌倒发生率.结果:住院患者跌倒发生率由实施品管圈管理前的0.03‰降低至改善后的0.01‰,差异有统计学意义(P<0.05).结论:正确运用品管圈质量改进工具可有效降低住院患者跌倒发生率,并且能提高圈员品质改善的能力.%Objective: To explore the effect of quality control circle in decreasing the fall rate of hospitalized patients. Methods: According to fall report of hospitalized patients, the quality control circle team reviewed 39 falls of hospitalized patients in our hospital from January 2006 to September 2008, analyzed fall causes, set the goals, develop countermeasures, put them into effect, and confirmed the fall rate of hospitalized patients after the application of quality control circle from January 2009 to September 2011. Result: The fall rate of hospitalized patients decreased from 0.03%o to 0.01‰ after the application of quality control circle which improved 66.70% and the difference was significant (P<0.05). Conclusions: The application of the quality improvement tool of "quality control circle" could decrease the fall rate of hospitalized patients and improve the ability of the circle members.

  17. Effect of quality control circle on Burnout syndrome of emergency nurses%品管圈活动对急诊护士Burnout综合征的影响

    Institute of Scientific and Technical Information of China (English)

    廖德珺; 唐景洁; 童静

    2015-01-01

    目的 评估品管圈活动对温州市某医院急诊科护士Burnout综合征及患方满意度的影响.方法 于2012年1月-2013年12月选择温州市某医院的急诊科在职护士为研究对象,采用随机数字表法将其随机分为品管圈组(47人)和对照组(39人),对照组护士采用常规管理方法,品管圈组开展品管圈活动进行管理.品管圈活动为期3个月,在开展品管圈前1周及活动后1周对两组护士同时进行Burnout综合征症状等问卷调查,调查一般人口社会学资料、职业倦怠感症状频数、工作表现及患方满意度.结果 活动前两组护士的Burnout综合征症状发生情况差异无统计学意义(P>0.05);活动后1周,两组护士的疲劳感、头痛感、失眠、负面情绪出现情况差异有统计学意义(x2值分别为5.88,6.01,5.88,6.11;P <0.05),而易怒感症状发生率分别为19.1%和25.6%,差异无统计学意义(x2 =0.52,P>0.05).活动前,两组护士的工作表现和患者满意度评分差异无统计学意义;活动后l周,品管圈组护士的同事关系、工作满意度、工作效率、患者满意度评分分别是(5.81 ±0.19),(5.13±0.29),(5.12±0.80),(5.33±0.54)分,均高于对照组护士[(4.90±0.83),(4.73±0.37),(4.01±0.91),(4.48±0.30)分],差异有统计学意义(t值分别为2.613,2.433,2.695,2.497;P<0.05);品管圈组护士的离职意向评分为(2.11±0.98)分,低于对照组的(4.85±0.71)分,差异有统计学意义(=2.946,P<0.01).结论 品管圈可有效改善急诊护士Burnout综合征症状,降低护士的离职意向,提高护士工作积极性,提升患者满意度.%Objective To evaluate quality control circle (QCC) impacting on Burnout syndrome of emergency nurse and satisfaction of patients in one hospital of Wenzhou.Methods Emergency nurse,who worked at one hospital of Wenzhou during January 2012 to December 2013,were chosen as sampling objects and divided into QCC group (47 nurses) and control group (39

  18. Quality control circle care in improving the application of the success rate of breastfeeding%品管圈护理在提高母乳喂养成功率中的应用

    Institute of Scientific and Technical Information of China (English)

    唐彦梅

    2015-01-01

    ObjectiveTo explore quality control activities in the application of improve the success rate of breastfeeding.Methods Set up quality management circle activity group, and the maternity ward in the hospital childbirth puerpera were randomly assigned: a group for the control group, according to obstetric care routine care, guidance related knowledge; Another group as the observation group, set up quality management circle group of maternal care.Results Observing group and control group in the hospital maternal breastfeeding knowledge awareness were 100%, 80.24%, breastfeeding success rate were 80.86%, 61.72%, the incidence of maternal breast tenderness is 26.54%, 59.88% respectively. Maternal breastfeeding skills correctly grasp situation observation group was obviously higher than that of control group, difference has statistical significance (P < 0.05).Conclusions Quality management circle activity can significantly improve the success rate of the breastfeeding is worth promoting.%目的:探讨品管圈活动在提高母乳喂养成功率中的应用。方法:成立品管圈活动小组,并对产科病区住院分娩的产妇进行随机分组:一组为对照组,按产科护理常规进行护理,指导相关知识;另一组为观察组,成立品管圈小组对孕产妇进行护理。结果:观察组与对照组产妇在出院时母乳喂养相关知识知晓率分别是100%、80.24%,母乳喂养成功率分别是80.86%、61.72%,产妇乳房胀痛发生率分别是26.54%、59.88%。观察组产妇母乳喂养技巧正确掌握情况明显高于对照组,差异具有统计学意义(P<0.05)。结论:品管圈活动能明显提高母乳喂养的成功率,值得推广。

  19. [Willis and his circle].

    Science.gov (United States)

    van Gijn, Jan; Gijselhart, Joost P

    2012-01-01

    Thomas Willis (1621-1675) grew up in Wiltshire and studied medicine in Oxford, at a time when the city was besieged and then occupied by Parliamentarian troops. He started his career as a country doctor while concurrently taking part in informal gatherings with other scientists (William Petty, Christopher Wren and, later on, Robert Hooke, Richard Lower and Robert Boyle). They performed physical and chemical experiments and carried out a variety of tests on animals. After the restoration of the monarchy in 1660 Willis combined his practice with academic teaching. From then on he focused his studies on the structure and function of the brain, dissecting brains after removal from the skull and fixation in 'spirit of wine'. In his 'Cerebri anatome' of 1664, illustrated by Wren, he drew attention to the arterial circle at the base of the brain, including its physiological advantages. This arterial circle had been incompletely described by others in the past and fully, but only in writing, by Wepfer in 1658.

  20. Recumbent Stone Circles

    Science.gov (United States)

    Ruggles, Clive L. N.

    During the 1970s and early 1980s, British archaeoastronomers were striving to bridge the interpretative gulf between the "megalithic observatories" of Alexander Thom and an archaeological mainstream that, generally speaking, was hostile to any mention of astronomy in relation to the megalithic monuments of Neolithic and Early Bronze Age Britain. The Scottish recumbent stone circles (RSCs) came to represent an example where sounder methodology could overcome many of the data selection issues that had beset earlier studies and, with due restraint, produce credible interpretations. Systematic studies of their orientations consistently concluded that the RSCs had a strong lunar connection, and it was widely envisaged that they were the setting for ceremonies associated with the appearance of the moon over the recumbent stone. Other evidence such as the presence of white quartz and the spatial distribution of cupmarks appeared to back up this conclusion. New archaeological investigations since 1999 have challenged and modified these conclusions, confirming in particular that the circles were built to enclose cairns rather than to demarcate open spaces. Yet the restricted pattern of orientations of these structures could only have been achieved by reference to the basic diurnal motions of the skies, and orientation in relation to simple observations of the midsummer moon remains the most likely reading of the alignment evidence taken as a whole. On the other hand, a consideration of the broader context, which includes the nearby Clava cairns, highlights instead the symbolic importance of the sun.

  1. The Arctic Circle Revisited

    CERN Document Server

    Colomo, F

    2007-01-01

    The problem of limit shapes in the six-vertex model with domain wall boundary conditions is addressed by considering a specially tailored bulk correlation function, the emptiness formation probability. A closed expression of this correlation function is given, both in terms of certain determinant and multiple integral, which allows for a systematic treatment of the limit shapes of the model for full range of values of vertex weights. Specifically, we show that for vertex weights corresponding to the free-fermion line on the phase diagram, the emptiness formation probability is related to a one-matrix model with a triple logarithmic singularity, or Triple Penner model. The saddle-point analysis of this model leads to the Arctic Circle Theorem, and its generalization to the Arctic Ellipses, known previously from domino tilings.

  2. The Application of Quality Control Circle Activity in Ensuring the Integrity of Records of Physicians' Change Shifts%品管圈活动在保证医师交接班记录完整性中的应用

    Institute of Scientific and Technical Information of China (English)

    孙蓉蓉; 陈园园; 周平; 孟繁荣; 韩光曙

    2016-01-01

    目的:探讨品管圈在保证医师交接班记录完整性中的作用,以提高交接班质量,保障医疗安全。方法按照品管圈活动的基本操作步骤,运用质量管理工具,对医师交接班记录的完整性进行调查,分析医师交接班记录不完整的原因,提出并落实改进对策,将活动开展前后的情况进行比较。结果医师交接班记录不完整率从活动前的47.1%下降至19.3%,活动前后有显著性差异(P<0.05);医师对责任心、品管手法运用等自我评价均较活动前提升。结论通过此次品管圈活动,显著降低了医师交接班记录的不完整率,提高了医师交接班质量和效率,增强了圈员自我质量管理意识和品管工具运用的能力。%Objective:To explore the function of quality control circle in ensuring the integrity of records of physicians' change shifts, in order to improve the quality of the change shifts and ensure the safety of medical treatment. Methods: According to the basic steps of quality control circle activity, we investigated the integrity of the records of physicians' change shifts, analyzed the reasons for the incomplete records of physicians' change shifts, put forward and implemented the improvement measures, and compared the situation before and after the activity with quality management tools. Results:The rate of incomplete records of physicians'change shifts was reduced from 47. 1% to 19. 3%, and there were significant differences(P<0. 05).; physi-cians' self assessment of responsibility and application of quality control technique was upgraded as compared with before. Con-clusions:Through the quality control circle activity, the rate of incomplete records of physicians' change shifts was reduced sig-nificantly, the quality and efficiency of the physicians ' change shifts has been improved, members ' self quality management awareness and ability to use quality management tools have been enhanced.

  3. A Less Conservative Circle Criterion

    OpenAIRE

    2008-01-01

    A weak form of the Circle Criterion for Lur'e systems is stated. The result allows prove global boundedness of all system solutions. Moreover such a result can be employed to enlarge the set of nonlinearities for which the standard Circle Criterion can guarantee absolute stability.

  4. 运用品管圈降低PICU医源性皮肤粘贴伤发生率的探讨%Application of Quality Control Circle to Reduce the Incidence Rate of PICU Iatrogenic Skin and Paste Injury

    Institute of Scientific and Technical Information of China (English)

    郭建新; 郭璇; 颜萍

    2015-01-01

    Objective QCC reduce the clinical effect of pediatric severe patients skin paste injury. Methods The control group in our department in June 2013 - December 313 cases of critically ill children; the observation group in our depart-ment in January 2014-June 298 cases of critically ill children; the observation group use of quality control circle of nursing intervention, the control group used traditional nursing intervention, as a comparison observation. Results The effect of ob-servation group was better than that of the control group, and the effect was obvious. Conclusion The application of quality control circle to reduce the incidence of pediatric severe iatrogenic injury of the skin wound has a significant effect, the ef-fect is exact, convenient, it is worth promoting. Nurses of iatrogenic skin paste injury have deeper understanding, through this event, the circle using Qcc ability, team spirit, mental development ability, communication coordination ability, self-confidence, honor sense are improved.%目的 运用品管圈降低儿科重症患儿皮肤粘贴伤的临床效果. 方法 对照组为该科2013年6-12月收治的313例危重患儿;观察组为该科2014年1-6月收治的298例危重患儿;观察组运用品管圈进行护理干预,对照组使用传统的护理干预,作为对比效果观察. 结果 观察组效果明显优于对照组,且效果显著. 结论 运用品管圈对降低儿科重症医源性皮肤粘贴伤的发生率有显著成效,效果确切﹑方便易行﹑值得推广.该科护士对医源性皮肤粘贴伤有了更深层次的认识,通过该次活动,圈员对运用Qcc能力﹑团队精神﹑脑力开发能力﹑沟通协调能力﹑自信心﹑荣誉感均得到提升.

  5. 品管圈活动在ICU医护人员手消毒管理中的应用%Application of quality control circle activities in management of hand disinfection of medical staff in ICU

    Institute of Scientific and Technical Information of China (English)

    潘海燕; 颜波儿

    2012-01-01

    目的 探讨品管圈活动对ICU医护人员手消毒的影响,改善手消毒不规范行为,为临床手卫生管理提供有效方法.方法 成立品管圈活动小组,设计手消毒现况调查表,对问题进行原因分析,确立并落实4项改进措施.结果 卫生手消毒不规范行为由活动前的177人次/周减少至40人次/周.结论 品管圈活动有效地改善了手消毒现状,是一种有效提高手卫生管理的方法.%OBJECTIVE To explore the impact of quality control circle aclivities(QCC) on hand disinfection in the ICU medical staff, to improve the irregularities of hand disinfection and find out the effective management of hand hygiene. METHODS A QCC activity group was set up. The questionnaire was designed for analyzing the status of hand disinfection, the 4 modified measures were proposed and implemented. RESULTS The hand disinfection irregularities decreased from 177 times per week to 40 times per week. CONCLUSION The application of the quality control circle activities has effectively improved the status of hand disinfection. It is an effective way to improve hand hygiene management.

  6. 品管圈活动在实习生临床带教活动中的应用研究%The Application of Quality Control Circle Activity in the Clinical Teaching of Interns

    Institute of Scientific and Technical Information of China (English)

    姜会枝; 田晓燕

    2016-01-01

    Objective Through the Quality Control Circle (QCC) activity, to optimize the process of internship guidance and teaching, to enhance the interns’ satisfaction degree of the department guidance and teaching, and improve the quality of teachers and interns’ work.Methods To implement activities according to the steps of the QCC activity, interns will be divided into two groups, the experimental group and the comparison group, the experimental group adopts the QCC pattern to guide and teach the interns while the comparison group adopts the general pattern, then I will evaluate and review the effect by issuing satisfaction questionnaire, evaluating interns’ practice performance and their daily behavior.Results Through the Quality Control Circle activity, improved the sense of responsibility of teachers and interns, reduced the error ratio of interns, improved the quality of the nursing guidance and teaching.Conclusion In the process of guidance and teaching, by applying the related QCC nursing quality tools, I can timely discover problems and solve them and sum up experience, it can be not only beneifcial to improve the interns’ theory and clinic ability, but also can decrease their nursing quality defects.%目的:通过品管圈活动,优化实习生带教流程,提高实习生对科室带教的满意度,改善带教老师与实习生的工作质量。方法按照品管圈活动步骤开展活动,将实习生分为实验组和对照组,实验组采用品管圈方式带教,对照组采用一般方式带教,通过发放满意度调查表、评价实习生出科成绩及日常实习表现,对效果进行评价和检讨。结果通过品管圈活动,提高了带教老师与实习生的责任心,减少实习生差错率,提高了护理带教质量。结论在带教过程中运用品管圈相关护理质量工具,能及时发现问题、解决问题以及总结经验,不仅有利于提高实习生理论与临床能力,还能减少护理质量缺陷。

  7. 品管圈活动在降低多导睡眠监测失败率的应用%The Application of Quality Control Circle in Reducing Polysomnography Failure Rate

    Institute of Scientific and Technical Information of China (English)

    卢南锦; 常雪娟; 龚荣娣; 陈绍森

    2016-01-01

    Objective:To study the the application of quality control circle in reducing polysomnography failure rate.Methods:10 people in the department form a quality control circle team,through the activity pro-cedure,using quality management tools to analyze and improve the failing reason of polysomnography and compare the failure rate before and after the improvement.Results:The polysomnography failure rate reduced from 12.02% to 2.88% afater the activity.The passing rate of the theoretical knowledge and operation of nurses increased from 70% and 81% to 98% and 100%.Moreover,the comprehensive ability of team mem-bers improved significantly.Conclusion:The correct use of quality management tools can effectively reduce polysomnography failure rate as well as improve quality management ability.%目的::探讨品管圈活动在呼吸内科睡眠中心多导睡眠监测中降低多导睡眠监测的失败应用效果。方法:科内10人成立品管圈小组,通过品管圈活动步骤,运用质量管理工具对多导睡眠监测失败的原因进行分析改进,并将改进前后多导睡眠监测失败率行比较。结果:多导睡眠监测的失败率从开展活动前12.02%下降至活动后的2.88%,超出了预期目标。护士睡眠监测理论知识、操作考核合格率分别由70%、81%提高至98%、100%。此外圈员综合能力明显提升。结论:正确运用品管圈质量改进工具可有效降低多导睡眠监测的失败率,提高圈员品质和质量管理能力。

  8. Application of quality control circle mode in reduction of drug withdrawal pen number in ward%品管圈工作模式在减少病区退药笔数的应用

    Institute of Scientific and Technical Information of China (English)

    娄邦秀; 史菲菲; 何晓春

    2014-01-01

    Objectiveto investigate the effect of quality control circle mode to reduce the number of ward drug withdrawal. Methods after establishing quality control circle, Pdca circulation method was applied. the number of drug withdrawal was compared between before and after quality tube activities through 10 steps including the theme selection, planning, situation, goal setting, analysis, countermeasure development, implementation and review, conifrmation of effect, standardization, review and improvement, and the conclusion was drawn.Results withdrawal number reduced from the original 32 pen / week to 14 pen/ week after improvement, at a rate of 133% as percent goal met.Conclusion The QCactivities not only reduced withdrawal events, but also enhanced the overall quality of the individual team members and the nursing service level of department with high quality rose to a new level.%目的:探讨品管圈工作模式对减少病区退药笔数的作用方法成立品管圈,运用Pdca循环方法,通过主题选定、计划拟定、现状把握、目标设定、解析、对策拟定、实施与检讨、效果确认、标准化、检讨与改进10个步骤,将品管活动前后的退药笔数进行对比,得出结论结果退药笔数由改善前的32笔/周减少至改善后的14笔/周,目标达成率达到133%。结论品管活动不仅减少了退药事件的发生,同时也提升了圈员的个人综合素质,科室优质护理服务水平上升到一个新台阶。

  9. Application of quality control circle activity in reducing the operating room nurses tour times out%品管圈活动在减少手术室巡回护士外出次数中的应用

    Institute of Scientific and Technical Information of China (English)

    程慧

    2016-01-01

    目的:运用品管圈(QCC)活动减少手术室巡回护士外出次数。方法:组建品管圈活动小组,通过圈员投票将减少巡回护士外出作为本次活动的主题,按照品管圈活动步骤及方法,对影响手术间巡回护士外出次数的原因进行分析,制定相应的措施并组织实施。结果:手术间巡回护士外出次数由品管圈活动前的8.29次/台降低到5.61次/台,降幅达32.32%。结论:通过品管圈活动能提高护士工作效率,保证患者手术安全,推进手术室护理管理标准化。%Objective:To apply quality control circle (QCC) tour activities to reduce go out of the operating room nurses.Method:Reduced the visiting nurse go out as the theme of the event by circle member vote to form QCC activity group,according to the QCC activity method,analyzed the reasons of the affecting operation between circuit nurses,and the number of out formulate corresponding measures and organize their implementation.Results:Between operation circuit nurses out by QCC activity times 8.29 times down to 5.61 times,drop of 32.32%.Conclusion:Through the QCC activity increase work efficiency of nurses,to ensure the safety of patients,and promote standardization of the operating room nursing management.

  10. Application of Quality Control Circle in Reducing the Decibel Rate of Ward Noise%应用品管圈降低病房噪音的分贝率

    Institute of Scientific and Technical Information of China (English)

    李双; 吴琼; 薄艳云

    2016-01-01

    目的:探讨应用品管圈活动降低病房噪音的应用效果。方法成立品管圈活动小组,通过对住院病人满意度调查表,确定解决的主要问题为降低病房噪音”。对病区噪音因素进行分析,根据主题选定理由、制定活动计划表、数由原来最高的据目标设定、原因分析、对策制定、运用PDCA方法,再进行检讨和采取相应措施,解决问题。结果2014年5月7-14日通过住院病人满意度调查表中患者对病房安静度问卷调查,病房噪音的分贝数患由原来最高的83.9分贝,降低到2014年10月1-10日59.7 dB。在提高出院病人满意度的同时,也为护士提供展示自我为才能的平台,极大的体现了个人价值、提升全体圈员的沟通能力和解决问题的能力。结论通过品质管理,有效降低了病房噪音,使环境安静有序,提高工作质量,患者满意度提高,从而使护理服务质量大大提升。%Objective To study the application effect of the quality control circle in reducing the ward noise. Methods The quality control circle activity groups were established, that the main issue was reducing the ward noise was determined by the satisfactory degree survey scale in inpatients, and the ward noise factors were analyzed, and the reasons were selected according to the theme and the activity plan table was made and the review and corresponding measures were adopted by PDCA method. Results The ward quiet degree questionnaire of inpatients from May 7, 2014 to May 14, 2015 showed that the decibel number of ward noise was from 83.9 db that was the originally highest decreased to 59.7 db from October 1, 2014 to October 10, 2014, and it improves the satisfactory degree of discharged patients, at the same time, it provides the platform of showing self-talent, greatly reflects the individual value and improves the community ability and problem-solv-ing ability of the whole circle staff. Conclusion The

  11. Application of quality control circle program in stroke patients with enteral nutrition%品管圈活动在脑卒中营养支持患者中的应用

    Institute of Scientific and Technical Information of China (English)

    王宇娇; 高岚; 王丹丹; 李春静; 章园; 林东明

    2014-01-01

    Objective To explore the role of quality control circle program to improve the malnutrition in stroke patients .Methods Ninety-one patients and twenty nurses were chosen and randomly divided into the observation group including 46 patients and 10 nurses and the control group including 45 patients and 10 nurses. The nurses in the observation group received the “stroke patients with malnutrition” as the center quality control circle training for three months , and all members in the observation group spent one hour in every week to establish problems and solution;the control group received the routine enteral nutrition .The incidence rate of malnutrition and the index of nutrition were compared between two groups during six months .Results The incidence rate of malnutrition was 17% in the observation group , and was 33% in the control group , and the difference was statistically significant (χ2 =7.42, P <0.01).The differences were found in the index of nutrition including the skinfold thickness of triceps muscle , upper arm muscle circumference , the levels of serum albumin and transferring between two groups (P <0.01).Conclusions The quality control circle program carried out in stroke patients with enteral nutrition can effectively reduce the incidence rate of malnutrition , and improve the quality of nursing , and increase the ability of nurses to analyze and solve problems .%目的:探讨品管圈活动在改善脑卒中患者营养不良状态中的作用。方法选取91例患者和20名护士为研究对象,采用抽签法随机将患者分为品管圈组46例患者和10名护士,对照组45例患者和10名护士。对品管圈组的护士以“脑卒中患者营养不良问题”为中心开展为期3个月的品管圈培训,圈成员每周用1小时的时间来确定问题和设立解决方案;对照组采用科室内常规肠内营养支持方法。比较6个月内两组患者营养不良发生率及营养指标情况。结果品管圈

  12. An Application of Quality control circle Activities in raising the Accurate rate of Clinic nurse triage%品管圈活动在提高门诊护士预检分诊准确率中的应用

    Institute of Scientific and Technical Information of China (English)

    李洪艳; 李洪英

    2015-01-01

    目的:探讨开展品管圈活动在提高门诊护士预检分诊准确率中的应用效果。方法成立品管圈,选定活动主题,拟定活动计划,把握现状,设定目标,解析影响因素,拟定对策并按计划实施,比较活动前后门诊护士预检分诊准确率,从而确认活动效果。结果经品管圈活动,门诊护士预检分诊准确率由活动前92.18%提高至96.21%,超出预期目标。圈员在学习积极性、沟通能力、分析能力、团队精神、自信心五个方面均有提高。结论开展品管圈活动可提高门诊护士预检分诊准确率,通过持续性的护理质量改善活动,有效提高了护理质量及圈员的综合素质。%Objective Discusing the effect of Application Quality Control Circle Activities (QCCA) in raising the accurate rate of clinic nurse triage. Method Establish the Quality Control Circle(QCC),select the theme,make the plan,setting the goals,analysis the in-lfuence factors, plan and implement the strategies, compare the accurate rate of clinic nurse triage before and after implementing the QCCA, conifrm the effect of QCCA. Result By implementing the QCCA, accurate rate of Clinic nurse triage raised from 92.18% to 96.21%, witch Exceeded the expectation. QCC members ability of learning, communication, analyzing, collaboration and Self conif-dence are improved. Conclusion Using QCCA is helpful to raising the accurate rate of clinic nurse triage. By continue implementing QCCA in nursing, the QCC members’ comprehensive quality are improved.

  13. 品管圈活动在急危重症患者压疮管理中的应用效果%Effect of quality control circle activity in management of pressure ulcer in critically ill patients

    Institute of Scientific and Technical Information of China (English)

    张红梅; 李艳梅; 孙红; 史冬雷; 赵艳伟; 胡英莉; 孟彦苓

    2016-01-01

    Objective To explore the effect of quality control circle activity on pressure ulcer management in critically ill patients.Methods Quality management tools were applied to analysis the causes of hospital pressure ulcer event in critically ill patients of emergency room and medical intensive care unit (MICU) along with improving those tools.And then,effects were compared before and after improvement.Results The incidence of pressure ulcer was 3.6% before improvement and 1 .0% after improvement in emergency room;the incidence of pressure ulcer was 7.8% before improvement and 3.6% after improvement in MICU;there were statistical significance in all of them (χ2 =7.1 38,8.253;P <0.01 ).Conclusions Quality control circle activity effectively decreased the incidence of pressure ulcer in critically ill patients by adding the tool for skin decompression,standardizing the process of pressure sore assessment,strengthening the cooperation between doctor and nurse,organizing nurses training and playing coordination and guidance functions of functional departments.%目的:探讨品管圈活动对于急危重症患者压疮管理的效果。方法运用质量管理工具,对急诊抢救室和内科重症监护室(MICU)收治的急危重症患者发生院内压疮事件的原因进行分析和改进,并进行改进前后效果比较。结果急诊抢救室压疮发生率改善前为3.6%;改善后为1.0%;MICU 压疮发生率改善前为7.8%,改善后为3.6%,差异均有统计学意义(χ2值分别为7.138,8.253;P <0.01)。结论通过开展品管圈活动,实施增加皮肤减压工具、规范压疮评估流程、加强医护合作、组织护士培训,发挥职能部门协调与指导功能等对策,有效降低了急危重症患者压疮发生率。

  14. Application of Quality Control Circle in the Management of Multidrug-Resistant Organism%品管圈在多重耐药菌管理中的应用

    Institute of Scientific and Technical Information of China (English)

    杨雅; 陈卫芳; 朱云芳

    2013-01-01

    目的探讨品管圈活动在多重耐药菌管理中的应用效果。方法成立品管圈小组,建立多重耐药菌的监测、报告制度,制定控制措施,在实施过程中持续监控、整改,并适当处罚。结果品管圈活动开展后,多重耐药菌感染率下降到21.41%;多重耐药菌措施知晓率达98.5%;措施落实率达99.95%;隔离到位,达标率100%。结论品管圈活动降低了多重耐药菌感染的发生,有利于各项制度和措施的落实,加强了各科室医护人员之间的团队协助精神,提高了质量管理能力,是一种较好的管理方法。%Objectives:Discuss the effects of employing quality control circle (QCC) in the management of multi-resistant organisms (MDRO). Methods:QCC group was set up. The monitor and report mechanism for MDRO was established and measures for its control enforced. Monitoring, rectification and appropriate punishment were kept throughout the process. Results:After the QCC activities, the infection rate of MDRO decreased to 21.42%. The ratio of staff aware of the measures was 98.5%, while that of implemented measures amounted to 99.95%. 100%MDRO patients were isolated. Conclusions:Quality control circle activities decreased MDRO infection, benefited the implementation of many other regulations and measures, strengthened coordination between all departments, and enhanced quality control capability. QCC is a good management method.

  15. The application of quality control circles for nurses in improving the use of chemotherapy drugs awareness%品管圈在提高护士对使用化疗药物知晓率中的应用

    Institute of Scientific and Technical Information of China (English)

    胡艳兴; 陈晓敏; 夏娜; 欧敏仪; 张瑞燕; 李珍文

    2016-01-01

    目的:探讨品管圈活动对护士使用常用化疗药物知晓的应用效果。方法:选取2013年1月~2015年1月本科室护理人员24名为研究对象,2014年9月成立品管圈小组,通过主题选定、计划拟定、现状把握、目标设定、要因分析、拟定对策并实施。结果:开展品管圈活动后,护士对常用化疗药物相关知识考核成绩明显高于实施前,差异有统计学意义(P ﹤0.05),无形成果显著。结论:将品管圈活动应用于护士对常用化疗药物使用的培训和管理,能有效提高其用药知识,保证护理安全。%Objective:To explore the application effect of quality control circle activities for nurses to use commonly known chemotherapy drugs. Methods:The choice of 24 undergraduate course room nursesfrom January 2013 to January 2015 was regarded as the research object. The quality control circlesteam was set up in September 2014 through topic selection,planning,current situation,goal setting,analysis,proposed countermeasures and performance. Results:The im-plementation of quality management circle activity significantly improved the assessment scores of the nurse to commonly use chemotherapy drugs than before, whose difference was statistically significant(P ﹤0. 05),with obvious intangible fruits. Conclusion:The application of qualitycircle activity to nurse training and management over the use of commonly used chemotherapy drugs,can effectively improve their knowledge of drugs and guarantee nursing safety.

  16. Discussions on the Dual Construction of Quality Control Circle and Hospital Culture%品管圈活动与医院文化二重构建的探讨

    Institute of Scientific and Technical Information of China (English)

    邓明德; 马明镜; 何蕾; 陶玥颖; 匡永利

    2016-01-01

    Currently, quality control circle activities have been widely launched in some regions of our country, and there is a trend of being popularized across the country .But the result is hard to predict .One main reason is that when certain advanced management methods and technologies are introduced , they fail to be com-bined with practice , especially with hospital culture , and thereby , result in undesirable phenomena , such as unac-customization and failure .Therefore, when introducing quality control circle as a novel administrative method , it is suggested that the administrators should carefully seek effective approaches and make it compatible with hospital culture, so as to constantly promote its vitality.In this way, the medical quality can be comprehensively improved .%当前品管圈活动在全国一些地区成功地展开,有逐步向全国各地推广之势。但效果很难定论,其主要原因在于引进一些较为先进的管理方法和技术的同时,未能很好地将理论与实践相结合,特别是在医院文化活动的开展方面做得欠佳,往往有始无终,甚至发生“水土不服”的“流产”现象。在引进品管圈活动这一管理方法时,管理者应认真探索持续开展品管圈活动的有效方法,要与医院文化相伴而行,相得益彰,这样才具有生命力,从而达到以点带面的效果,持续全面地改进医疗质量。

  17. Application of Quality Control Circle Activity in the Management of Hand Hygiene of Nurses in the Geriatric Ward%品管圈活动在老年病房护士手卫生管理中的应用

    Institute of Scientific and Technical Information of China (English)

    卓素联

    2016-01-01

    目的:探讨品管圈在老年病房护士手卫生管理中的应用效果。方法采用自愿报名组圈的方式组成品管圈,确立以提高护士洗手依从率和正确率为主题,并对老年病房护士手卫生现状进行调查,查找护士手卫生依从率低的原因,找出对策进行质量持续改进。结果经过为期6个月的品管圈活动,护士对手卫生和洗手的认知明确,能熟练运用七步洗手法正确洗手,洗手率由活动前的82.3%升至活动后的93.8%,差异有统计学意义(P<0.05);平均合格洗手率由活动前的79.6%升至活动后的94.6%,差异有统计学意义(P<0.05)。结论临床在手卫生管理中,开展品管圈活动,提高了护士洗手率和洗手合格率。并增进同事间的团结协作,提高活动成员的工作热情、团队凝聚力和管理职能。%Objective To explore the application effect of quality control circle in the management of hand hygiene of nurses in the geriatric ward.Methods The voluntary group circle mode of QCC,established to improve the handwashing compliance rate and correct rate as the theme, and carries on the investigation to the present situation of hand hygiene of nurses in the geriatric ward,find the nurse hand hygiene compliance rate low reason, find out the Countermeasures for continuous quality improvement.Results After 6 month of QCC,and wash the nurse hand hygiene cognition clear, proficiency in the use of seven step hand washing handwashing,hand washing rate from before 82.3% to after 93.8%,the difference was statisticaly significant(P<0.05),the average passing rate of hand washing by active front rose to 79.6% after 94.6%,the difference was statisticaly significant(P<0.05).Conclusion Clinical management of hand hygiene, to carry out quality control circle activities,improve the rate of hand washing and hand washing rate of nurses. And enhance the unity and cooperation among coleagues,improve the

  18. Partial covering of a circle by equal circles. Part II: The case of 5 circles

    Directory of Open Access Journals (Sweden)

    Zsolt Gáspár

    2014-05-01

    Full Text Available How must n equal circles of given radius r be placed so that they cover as great a part of the area of the unit circle as possible? In this Part II of a two-part paper, a conjectured solution of this problem for n = 5 is given for r varying from the maximum packing radius to the minimum covering radius. Results are obtained by applying a mechanical model described in Part I. A generalized tensegrity structure is associated with a maximum area configuration of the 5 circles, and by using catastrophe theory, it is pointed out that the ''equilibrium paths'' have bifurcations, that is, at certain values of r, the type of the tensegrity structure and so the type of the circle configuration changes.

  19. An Introduction to Student Quality Circle at College of Business Administration, Salman Bin Abdulaziz University, Al Kharj, Kingdom of Saudi Arabia--An Empirical Study

    Science.gov (United States)

    Faridi, Mohammad Rishad; Al Kahtani, Nasser Saad; Alam, Teg; Malki, Said

    2014-01-01

    Catch 'em young for imparting hands-on rigorous academic training. This is what has been relentlessly pursued while dealing with the undergraduate students of business management who are to be thoroughly exposed to the whole gamut of quality work life. Whether they opt for corporate career or pursue masters or choose be an entrepreneur, their…

  20. Effect of quality control circle on maternal breastfeeding by parturients with nipple defects%品管圈活动在乳头缺陷产妇母乳喂养中的应用

    Institute of Scientific and Technical Information of China (English)

    张素珍; 徐智慧; 陈欢银; 赵丽红

    2015-01-01

    Objective To explore the effect of quality control circle (QCC) on nipple maternal breastfeeding by parturients with nipple defects. Method A QCC with a theme of"improve the maternal breastfeeding rate among the partureints with nipple defects"was established to investigate the current status, analyze the main causes, propose countermeasures and finally carry out countermeasures and check the effects according to the PDCA principles. Result The post-QCC adverse events of maternal breastfeeding in not enough lactation, breast swelling, cracked nipples, failure in the first suck and unqualified breastfeeding at discharge were significantly lower than those of pre-QCC ones (P<0.01). Conclusion Quality control circle can effectively solve the problems in nipple maternal breastfeeding and meanwhile improve the nurse work enthusiasm as well as their ability to solve problems.%目的 探讨品管圈活动在乳头缺陷产妇母乳喂养中的应用效果. 方法 成立品管圈,确定以"提高乳头缺陷产妇的母乳喂养水平"为主题,进行现况把握、要因分析、对策拟定和实施等. 结果 实施品管圈活动后乳头缺陷产妇母乳喂养不良情况,包括乳汁分泌不足、乳腺肿胀、乳头皲裂、首次吸吮失败和出院时母乳喂养不合格等发生例数均少于活动前,前后比较,均P<0.05,差异具有统计学意义.结论 品管圈活动能有效解决乳头缺陷产妇母乳喂养困难的问题,有利于提高母乳喂养水平和护士工作的积极性及解决问题的能力.

  1. 品管圈在提高产科病房病人交接班完整率中的应用%Application and effect of the maternity ward patients shift integrity rate of quality control circle

    Institute of Scientific and Technical Information of China (English)

    唐静

    2015-01-01

    Objective:To improve application and effect of the maternity ward patients shift integrity rate of quality control circle. Methods:From external and internal instructor of obstetric nurses were trained coil operation, extraction of backbone 14 nurses in group rings, to determine the "improve the maternity ward patient handover complete rate" as the theme, the team members brainstorming dis-cussion, make handover document outline 68, 2013. 06. 21 - 7. 04 in two weeks to check. In 940 cases, the average rate of complete 53. 38%, combined with the ability to improve the circle, determine the target value of 87. 29% points, in accordance with the fishbone diagram analysis for five reasons, establish four countermeasures countermeasures integrity rate of 91. 94% after the group. Results:Im-prove the maternity ward patient handover complete rate, the handover guide had been widely used in obstetric ward. Conclusion:The quality control circle could fully exploit the nursing staff's personal potential, strengthen the nursing team cohesion, enable nurses to better implement the core system, to ensure the safety of nursing care;at the same time, the safety management of the hospital, establish a good image.%目的::探讨品管圈在提高产科病房病人交接班完整率中的应用与效果。方法:由外部及内部辅导员对产科护士进行品管圈运作的系统培训,抽取产科骨干护士14名组圈,确定“提高产科病房病人交接班完整率”为活动主题,经组员脑力激荡讨论,制定交班文件大纲68项,2013年6月21日~7月4日2周内共查检了940例,平均完整率53.38%,结合圈能力,改善重点确定目标值为87.29%,依鱼骨图解析选出5大主因,建立4大对策群组,实施对策后完整率91.94%。结果:提高了产科病房病人交接班的完整率,目前交接班指南手册已在产科病房广泛应用。结论:品管圈充分发掘了护理人员的个人潜能,加强了护理团队的凝聚力,

  2. 2007 Critical Review Discussion -- Will the circle be unbroken: a history of the U.S. national ambient air quality standards

    Energy Technology Data Exchange (ETDEWEB)

    Judith C. Chow; John G. Watson; Howard J. Feldman (and others) [Desert Research Institute, Reno, NV (United States)

    2007-10-15

    In the review, John D. Bachmann traces the regulatory history of U.S. air pollution from the beginning of the 20th century to the present. The review divides this progress into four segments: (1) 1900-1970, from smoke abatement to federal involvement and the establishment of air quality management (AQM) in the 1970 Clean Air Act (CAA); (2) 1971-1976, when the first National Ambient Air Quality Standards (NAAQS) were promulgated and implemented; (3) 1977-1993, which included the first NAAQS revisions, major CAA amendments, and the evolution of AQM; and (4) 1993-2006, the second and third waves of NAAQS revisions and their implementation in the context of the 1990 CAA amendments. A discussant's commentary does not necessarily reflect the position of his or her respective organization. This Critical Review Discussion was compiled from written submissions and presentation transcripts. The invited discussants are as follows: Mr. Howard J. Feldman, director of regulatory and scientific affairs for the American Petroleum Institute; Ms. Janice E. Nolen, assistant vice president of national policy and advocacy for the American Lung Association; Dr. Barry Wallerstein, executive officer at the South Coast Air Quality Management District; Dr. John G. Watson, research professor in the Division of Atmospheric Sciences at the Desert Research Institute; Dr. George M. Hidy of Envair/Aerochem; Dr. Paul J. Lioy, Department of Environmental and Occupational Medicine; Robert Wood Johnson Medical School, University of Medicine and Dentistry, New Jersey; Dr. Herbert McKee, environmental consultant; Mr. David Mobley of the Atmospheric Modeling Division of the EPA's Office of Research and Development; and Mr. Keith Baugues, P.E., of air services for KERAMIDA Environmental. 127 refs.

  3. Quality control circle activity in improving intestinal tract cleanliness of patients undergoing colonoscopy%品管圈活动在提高结肠镜患者肠道清洁度中的作用

    Institute of Scientific and Technical Information of China (English)

    麦丽梅; 黎晓渝; 何丽芳

    2014-01-01

    Objective:To investigate the role of quality control circle activity in improving intestinal tract cleanliness of patients undergoing colonoscopy. Methods:100 patients who underwent colonoscopy in July 2013 and received oral laxatives were selected as the pre-activity group. Another 100 who underwent colonoscopy in November 2013 and received oral laxatives were selected as the post-activity group. Quality control circle was established to focus on activities towards improving intestinal tract cleanliness of patients who underwent colonoscopy after oral laxatives. The current situation, goal setting, reason analysis, strategy formulation, implementation and effects verification of the strategy, and other measures were adopted. The control rates of intestinal tract cleanliness of the two groups were statistically analyzed. The scores of problem-solving ability, professional knowledge,information retrieval,active service,team spirit and communication skills were assessed. Results:The control rate of intestinal tract cleanliness in patients of the post-activity group was 98% ( 98/100) , significantly higher than the 61% (61/100) of the pre-activity group (P<0.05).After the quality control circle activity,the scores of problem-solving ability, professional knowledge, information retrieval, active service, team spirit and communication skills of the members were significantly higher than those before the treatment ( P<0. 01).Conclusion:Using quality control circle to regulate intestinal tract cleanliness of hospitalized patients who underwent colonoscopy and received oral laxative can not only improve the control rate of intestinal tract cleanliness,but also promote the problem-solving ability,professional knowledge,information retrieval,initiative of active service,team cooperation spirit and communication skills of the nurses.%目的::探讨品管圈( QCC)活动在提高住院结肠镜患者肠道清洁度中的作用。方法:选择本院本科2013年7月行口

  4. Application of Quality Control Circle to Improve Hand Hygiene Compliance of ICU Visiting Relatives%品管圈在重症监护室探视家属手卫生中的应用

    Institute of Scientific and Technical Information of China (English)

    瞿静华; 杨玉敏; 沈孝峰; 宰章利; 范叶君

    2014-01-01

    目的 探讨品管圈(quality control circle,QCC)在重症监护室探视家属手卫生中的应用方法.方法 成立品管圈,确立“提高重症监护室(intensive care unit,ICU)探视家属手卫生依从性”为活动课题,对ICU探视家属手卫生依从性现状进行调查,分析ICU探视家属手卫生依从性存在的问题,确立无洗手意识、洗手标志不明显、家属不知可使用手快速消毒剂为此次活动的问题点,制定相应对策并组织实施,再进行效果检查.结果 品管圈活动使ICU探视家属手卫生依从性从3.0%提高到了94.4%.结论 QCC提升了ICU探视家属洗手的依从性,值得推广.

  5. Application of Quality Control Circle in Health Education in Stroke Rehabilitation Nursing%品管圈在脑卒中康复护理健康教育中的应用

    Institute of Scientific and Technical Information of China (English)

    冯洪; 谢家兴; 李淑会; 付文娟; 刘娜; 栗颖颖; 吕美艳; 赵莉敏; 杨宁宁

    2014-01-01

    目的:探索品管圈在脑卒中康复护理健康教育中的作用。方法2014年1~4月在本院神经康复VIP病房按照品管圈的理论进行主题选定、活动计划、现况把握、要因分析、对策拟订与实施等共10个步骤逐项进行活动。结果脑卒中住院患者健康教育满意度由品管圈活动实施前的80.1%升至实施后的91.1%(P<0.001);活动后日常生活动作指导、预防偏瘫并发症指导方面的不满意数比活动前下降(P<0.05);全体圈员在品管圈手法运用、团队精神、专业知识、沟通协调、活动信心和责任荣誉6个方面的能力均有所提高。结论开展品管圈活动对脑卒中康复护理健康教育能够起到积极作用。%Objective To explore the effect of quality control circle (QCC) on health education in stroke rehabilitation nursing. Methods Such activities were conducted in the VIP ward of neurological rehabilitation in our hospital as:theme selecting, activity planning, status mastering, cause analyzing, countermeasures formulating and implementing, etc., in accordance with QCC theory from January to April, 2014. Results The satisfaction of stroke patients to health education rose from 80.1%to 91.1%(P<0.001), and the dissatisfaction to guid-ance of activities of daily living and prevention of complications decreased significantly (P<0.05) after the implementation of QCC pro-gram. All the circle members benefited from the improvement of QCC technique, team work, professional knowledge, communication and coordination, activity confidence, duty and honor. Conclusion Carrying out the QCC activities can play a positive role on health education in stroke rehabilitation nursing.

  6. 应用品管圈降低住院患者给药差错发生率的探索%The effect of Quality Control Circle on reducing hospitalized patients' medication errors

    Institute of Scientific and Technical Information of China (English)

    贡浩凌

    2013-01-01

    目的:降低住院患者给药差错发生率,促进患者用药安全.方法:按品管圈理论的步骤进行计划、实施、确认和处置,分析导致住院患者给药差错发生的真因,探讨解决对策并实施,进行效果评价.结果:住院患者给药差错发生率由活动前的1.54‰降低至活动后的0.76‰,差异有统计学意义(P<0.01).结论:品管圈活动可有效改进给药护理质量,降低给药差错发生率,从而保证患者用药安全和治疗效果.%Objectives:To reduce the hospitalized patients' medication errors and to promote medication safety.Methods:According to ten steps of Quality Control Circle (QCC) theory,We applied planning,implementation,verification and disposal to analyze the real causes of hospitalized patients' medication errors,to probe and implement countermeasures,and to evaluate the effects.Results:The incidence of medication errors was decreased from 1.54‰ before QCC activity in 2011 to 0.76‰ after QCC activity in 2012 (P<0.01).Conclusion:The QCC activities could effectively improve the medication nursing quality,reduce medication errors,and ensure medication safety and therapeutic effect of hospitalized patients.

  7. Locating a minisum circle in the plane

    DEFF Research Database (Denmark)

    Brimberg, Jack; Juel, Henrik; Schöbel, Anita

    2009-01-01

    We consider the problem of locating a circle with respect to existing facilities in the plane such that the sum of weighted distances between the circle and the facilities is minimized, i.e., we approximate a set of given points by a circle regarding the sum of weighted distances. If the radius...... of the circle is a variable we show that there always exists an optimal circle passing through two of the existing facilities. For the case of a fixed radius we provide characterizations of optimal circles in special cases. Solution procedures are suggested....

  8. The Voronoi diagram of circles made easy

    DEFF Research Database (Denmark)

    Anton, François; Mioc, Darka; Gold, Christopher

    2007-01-01

    Proximity queries among circles could be effectively answered if the Delaunay graph for sets of circles could be computed in an efficient and exact way. In this paper, we first show a necessary and sufficient condition of connectivity of the Voronoi diagram of circles. Then, we show how the Delau......Proximity queries among circles could be effectively answered if the Delaunay graph for sets of circles could be computed in an efficient and exact way. In this paper, we first show a necessary and sufficient condition of connectivity of the Voronoi diagram of circles. Then, we show how...

  9. QRL closes the circle

    CERN Multimedia

    2006-01-01

    Installation of the cryogenic distribution line (QRL) on sector 1-2, the last to be equipped. Installation began on the last sector of the cryogenic distribution line (QRL) about three weeks ahead of the revised schedule. Besides the recent start on sector 1-2, two other sectors are still being installed. QRL installation is expected to be complete by October. Installation of a single sector involves placing 325 elements and making almost 2000 internal welds. The average time now needed for installing each sector is about four and a half months, compared to the 11 months it took to install the first sector. 'Now people are very well trained and they know they can go fast with a good quality,' said QRL project engineer Germana Riddone. As proof of that quality, QRL technicians can look at the results of the latest pressure test on sector 5-6. There were no internal leaks in the sector and out of 1000 external interconnections there were only three leaks. The QRL project was hampered early on by technical prob...

  10. On a Family of Circles

    Science.gov (United States)

    Feeman, Timothy G.

    2011-01-01

    We generalize a standard example from precalculus and calculus texts to give a simple description in polar coordinates of any circle that passes through the origin. We discuss an occurrence of this formula in the context of medical imaging. (Contains 1 figure.)

  11. The Circle Approach to Trigonometry

    Science.gov (United States)

    Moore, Kevin c.; LaForest, Kevin R.

    2014-01-01

    How do students think about an angle measure of ninety degrees? How do they think about ratios and values on the unit circle? How might angle measure be used to connect right-triangle trigonometry and circular functions? And why might asking these questions be important when introducing trigonometric functions to students? When teaching…

  12. Topological conjugacy of circle diffeomorphisms

    OpenAIRE

    1995-01-01

    The classical criterion for a circle diffeomorphism to be topologically conjugate to an irrational rigid rotation was given by A. Denjoy. In 1985, one of us (Sullivan) gave a new criterion. There is an example satisfying Denjoy's bounded variation condition rather than Sullivan's Zygmund condition and vice versa. This paper will give the third criterion which is implied by either of the above criteria.

  13. On a Family of Circles

    Science.gov (United States)

    Feeman, Timothy G.

    2011-01-01

    We generalize a standard example from precalculus and calculus texts to give a simple description in polar coordinates of any circle that passes through the origin. We discuss an occurrence of this formula in the context of medical imaging. (Contains 1 figure.)

  14. Effect of quality control circle on reducing the incidence of pressure ulcer during operation%品管圈对降低手术压疮发生率的效果

    Institute of Scientific and Technical Information of China (English)

    黄维健; 杜金库; 曲华; 于娟; 夏水叶; 张丽英; 祝焕蕾; 张盈盈; 孙斌; 张冉

    2015-01-01

    Objective To explore the effect of quality control circle ( QCC) on reducing the incidence of pressure ulcer during operation. Methods The quality control circle was organized by who aimed to reduce the incidence of pressure ulcer for patients undergoing operations. A total of 260 cases of operating patients were selected as control group from May 2013 to July 2013 ( Before the QCC group) and investigated the conditions of the pressure ulcer form during operation. By a series of QCC activity, we set target, found out the cause of pressure ulcer during operation, and took countermeasures to improve quality continually. A total of 282 operating patients had been accounted for the incidence of pressure ulcer from October 2013 to December 2013 (after the QCC group). We compared the skin damage related operation, the knowledge control of pressure ulcer among theatre nurses, standard rate of operation posture, et al. Results After the QCC activities, the rate of pressure ulcer was reduced from 9. 3% to 1. 4%, nursing knowledge control of the pressure ulcer among theatre nurses and standard rate of operation posture were improved obviously compared these of group before QCC (P<0. 05). Conclusions The QCC activities can minimize the incidence rate of pressure ulcer, but promote knowledge control of pressure ulcer among theatre and the standard rate of operation posture.%目的:探讨应用品管圈降低手术相关压疮发生率的实践效果。方法成立品管圈小组,确定降低手术相关压疮发生率为活动主题,选择2013年5—7月手术患者260例(品管圈活动前组),对手术相关压疮的发生情况进行现状调查。通过设定目标、查找导致手术相关压疮发生的原因,采取有针对性的措施进行持续质量改进。随即对2013年10—12月手术患者282例(品管圈活动后组)手术相关压疮发生情况进行统计。评价实施品管圈活动前后手术相关压疮发生率、手术室护士压疮相

  15. Improving the Reading Attitudes of College Students: Using Literature Circles to Learn about Content Reading

    Science.gov (United States)

    Bernadowski, Carianne

    2013-01-01

    Literature circles and book clubs have become a popular instructional literacy strategy. In recent years, educators attempt to motivate students to read more in quantity and quality at an early age. A case study design was utilized that required undergraduate education majors to participate in literature circles reading historical fiction and…

  16. Majorization algorithms for inspecting circles, ellipses, squares, rectangles, and rhombi

    NARCIS (Netherlands)

    K. van Deun; P.J.F. Groenen (Patrick)

    2003-01-01

    textabstractIn several disciplines, as diverse as shape analysis, location theory, quality control, archaeology, and psychometrics, it can be of interest to fit a circle through a set of points. We use the result that it suffices to locate a center for which the variance of the distances from the ce

  17. 品管圈活动在降低神经内科住院患者睡眠障碍发生率中的应用效果%Application of quality control circle on reducing the incidences of sleep disorder in patients of Neurology Department

    Institute of Scientific and Technical Information of China (English)

    于宏丽; 吕秀英; 张丽华; 石蕾

    2015-01-01

    目的 通过开展品管圈活动降低神经内科住院患者睡眠障碍发生率,提高护理质量及患者满意度. 方法 成立品管圈,选定降低患者睡眠障碍发生率为活动主题,采取现况把握、目标设定、解析、拟定对策、效果确认等基本步骤. 结果 品管圈活动后患者睡眠障碍发生率由活动前的87. 00%下降至62. 51%,目标达标率64. 447%;同时提高了圈员的6项能力及患者对护理人员服务的满意度,差异有统计学意义(P<0. 01). 结论 品管圈活动可降低神经内科住院患者睡眠障碍发生率,规范护理人员的护理行为,是提高神经内科睡眠障碍患者护理质量的有效途径之一.%Objective To reduce the incidence of sleep disorders in patients of neurology department by the application of quality control circle, thereby improving the quality of care and patient satisfaction. Methods The quality control circle was established, and the theme of activities was selected as"reducing the patient′s incidence of sleep disorders". The fundamental procedures included mastering of current status, goal setting, analysis, solutions protocol, effects confirmation, etc. Results The incidences of sleep disorder dropped from 87. 00% to 62. 51% after the application of quality control circle activities with goal attainment rate 64. 447%. At the same time, the six kind of abilities in the members of quality control circle and patients satisfaction with nursing services were improved (P <0. 01). Conclusions The quality control circle can reduce the incidences of sleep disorder in patients of neurology department and regulate the behavior of nursing staffs. It is an effective way to improve the patients′nursing quality of sleep disorders in neurology department.

  18. 品管圈活动在帕金森病合并抑郁患者中的应用%Effect of quality control circle activity on improving Parkinson’ s disease patients with depression

    Institute of Scientific and Technical Information of China (English)

    王培芝; 代桂宁; 杨洁; 王彦永

    2014-01-01

    Objective To explore the effect of quality control circle activity on depression and activities of daily living of Parkinson ’ s disease with depression .Methods Totals of 80 patients of Parkinson ’ s disease with depression were divided into treatment group and control group with 40 cases in each group according to the time of admission.Treatment group took part in quality control circle activity for 3 months, two groups were obliged to attend a constant activity with all patients per month , received collective health education .Hamilton depression scale ( HAMD) and Activities of Daily Living ( ADL) were used to measure depression degree and activities of daily living of patients before and after the intervention .Results Three months after the intervention, HAMD score of patients in treatment group was reduced to (8.80 ±2.36), that in control group was (19.47 ±1.85),and the difference was statistically significant (t=22.50,P<0.01).ADL score of patients in treatment group was increased to (89.14 ±2.25), while that score of patients in control group was (58.32 ±2.21), and significantly difference was found between two groups (t =61.81,P <0.01). Conclusions Quality control circle activity can improve the effect of health education through continuously giving the patients and caregivers health education , and establishing an effective social support system . Meanwhile , it can improve the patients ’ depression condition and self management ability , so as to improve the quality of their life .%目的:探讨品管圈活动对帕金森病合并抑郁患者抑郁和日常生活能力的影响。方法将80例帕金森合并抑郁的患者按入院顺序分为干预组和对照组,每组40例,干预组参加3个月的品管圈活动,两组患者及主要家庭照料者均参加每月1次的帕金森病友会,接受集体健康教育。采用汉密尔顿抑郁量表(HAMD)和日常生活能力(ADL)量表比较干预前后两组患者的抑郁

  19. 品管圈活动在门诊药房药师专业培训中的应用实践%Application of Quality Control Circle in Pharmacist Professional Training in Outpatient Pharmacy

    Institute of Scientific and Technical Information of China (English)

    何炜华; 张文志; 王玉和

    2014-01-01

    Objective: To improve the professional training effect for pharmacist of outpatient pharmacy . Meth-ods: Activities were implemented according to the steps of quality control circle ( QCC ) . The reasons for poor train-ing effect were analyzed by brainstorming method , the formulation and implementation of countermeasures were in-vestigated by fishbone diagram , tangible and intangible results were evaluated and the standard work procedures were made . Results: The training effects had a significant difference ( P < 0 . 01 ) before and after QCC with the rate of target completion of 84% and the improvement rate of 33%. Members ’ abilities were greatly improved . Con-clusion: The implementation of QCC is feasible for improving the professional training effects for pharmacist in out-patient pharmacy of our hospital , it is to be worth application .%目的:提升门诊药房药师专业培训效果。方法:按照品管圈管理模式的步骤实施各项活动,运用头脑风暴法分析培训效果欠佳的原因,采用鱼骨图探讨对策的拟定与实施,评价有形成果和无形成果,并制订标准化工作流程。结果:活动前和活动后培训效果有显著差异(P <0.01),目标达成率为84%,改善幅度为33%,圈能力得到显著提升。结论:品管圈活动的开展对提升我院门诊药房药师专业培训效果是可行的,建议推广应用。

  20. 品管圈在减轻患者肾穿刺术前焦虑中的应用%Application of quality control circle(QCC) in patients before renal biopsy

    Institute of Scientific and Technical Information of China (English)

    石敏

    2015-01-01

    目的:探讨品管圈在减轻患者肾穿刺术前焦虑中的应用效果。方法由肾科病区一线护理人员组成品管圈小组,通过头脑风暴,调查分析肾穿刺患者术前焦虑的原因,制定相应的整改措施并组织实施。结果患者肾穿刺术前焦虑由活动前63.3%降低到活动后的23.3%,效果显著( P<0.05);提高了护理人员的创新性、科研性,并提升整个团队的凝聚力和合作力。结论品管圈活动的开展有利于减轻患者肾穿刺术前焦虑。%Objective To investigate the anxiety relieving effect of quality control circle ( QCC ) in patients before renal biopsy.Methods QCC team consisting of nephrology nursing staff, through brainstorming, analyzed the reasons for preoperative anxiety of renal biopsy patients, developed appropriate corrective measures and organized their implementation. Results After the implementation of QCC, the preoperative anxiety incidence of renal biopsy patients decreased from 63.3%to 23.3%, the effect was significant (P<0.05).QCC improved nursing innovation and promoted cohesion and cooperation of the entire team.Conclusions QCC may help reduce the preoperative anxiety of renal biopsy patients.

  1. Yarning Circles in the Literacy Classroom

    Science.gov (United States)

    Mills, Kathy A.; Sunderland, Naomi; Davis-Warra, John

    2014-01-01

    This article explains how the speaking and listening practice of yarning circles can be used in the literacy classroom. The article opens with an account of a live enactment of yarning circles with elementary students in a mainstream classroom in Australia. It explains the purpose and origin of yarning circles in Indigenous communities, and…

  2. Science Literacy Circles: Big Ideas about Science

    Science.gov (United States)

    Devick-Fry, Jane; LeSage, Teresa

    2010-01-01

    Science literacy circles incorporate the organization of both science notebooks and literature circles to help K-8 students internalize big ideas about science. Using science literacy circles gives students opportunities to engage in critical thinking as they inductively develop understanding about science concepts. (Contains 1 table and 7…

  3. Cosmic crystallography in a circle

    CERN Document Server

    Teixeira, A F F

    2000-01-01

    In a circle (an $S^1$) with circumference 1 assume $m$ objects distributed pseudo-randomly. In the universal covering $R^1$ assume the objects replicated accordingly, and take an interval $L>1$. In this interval, make the normalized histogram of the pair separations which are not an integer. The theoretical (expected) such histogram is obtained in this report, as well as its difference to a similar histogram for non-replicated objects. The whole study is of interest for the cosmic crystallography.

  4. Nanogrid rolling circle DNA sequencing

    Energy Technology Data Exchange (ETDEWEB)

    Church, George M.; Porreca, Gregory J.; Shendure, Jay; Rosenbaum, Abraham Meir

    2017-04-18

    The present invention relates to methods for sequencing a polynucleotide immobilized on an array having a plurality of specific regions each having a defined diameter size, including synthesizing a concatemer of a polynucleotide by rolling circle amplification, wherein the concatemer has a cross-sectional diameter greater than the diameter of a specific region, immobilizing the concatemer to the specific region to make an immobilized concatemer, and sequencing the immobilized concatemer.

  5. 品管圈在降低颅脑外科医院感染发生率的效果研究%Quality control circle reduces the rate of nosocomial infection in neurocranial surgery

    Institute of Scientific and Technical Information of China (English)

    吕晓燕; 吴晖; 周娟; 潘敏葱; 杨美霞; 伍翠兰

    2015-01-01

    Objective:To investigate the role of quality control circle( QCC)in reducing the rate of nosocomial infection in neurocranial surgery. Methods:The themed action of 〝enhancing compliance with hand hygiene in health-care workers,decreasing nosocomial infection〝 was carried out in the year of 2014. All circle members implemented as advocated in this action. Results:After implementation of QCC,the rate of nosocomial infection reduced from 5.92% to 5.78%(P﹤0.05). In the Department of Neurocranial Surgery where infections with Gram-negative bacteria was predominant,the rate of nosocomial infection decreased from 90.91% to 88.89%(P﹤0.05). In 2014,doctors and nurses showed a higher rate of correct response to concept and manipulations in hand hygiene and the six-step hand washing method than they did in 2013(P﹤0.05). Conclusion:the action of QCC improves the compliance of hand hygiene among medical staff and decreases the rate of nosocomial infection in neurocranial surgery. In addition,QCC action improves the team cooperation and the self-surveillance of the personnel,therefore is justified for widespread use in clinical practice.%目的:探讨品管圈活动的开展对本院颅脑内科降低医院感染发生率的效果。方法:2014年全年对本院颅脑外科开展以〝提高医护人员手卫生的依从性,降低医院感染发生率〝为课题的品管圈活动,圈内成员按照品管圈活动内容执行。结果:QCC 实施后,颅脑外科医院感染发生率从5.92%下降至5.78%,差异有统计学意义(P﹤0.05);以革兰性阴性菌为主的颅脑外科医院感染病原菌从90.91%下降至88.89%,差异有统计学意义(P﹤0.05)。2014年医生及护理人员在掌握手卫生概念、六步洗手法、正确回答医护人员卫生标准方面较2013年显著提高(P﹤0.05)。结论:品管圈活动对提高医护人员手卫生依从性,降低颅脑外科医院感染发生率取得较好的效果,并

  6. Effect of quality control circle activity for improving self-care ability of colostomy patients%品管圈活动在提高肠造口病人自我护理能力中的作用

    Institute of Scientific and Technical Information of China (English)

    陈幸幸; 吴佳丽; 廖庆萍; 谭静; 刘艾; 何金艳

    2014-01-01

    [目的]探讨品管圈活动在提高肠造口病人自我护理能力中的作用。[方法]成立品管圈,以提高造口病人自我护理能力为目标。通过调查、原因分析、对策制定及实施、效果确认等方法,观察自我护理能力情况。[结果]开展品管圈活动后肠造口病人自我护理能力评分高于对照组,能够独立更换造口袋的人数多于对照组,造口相关知识的掌握情况优于对照组,差异有统计学意义(P<0.05)。[结论]品管圈活动的开展,可以提高肠造口病人的自我护理能力,改善病人的生活质量。%Objective:To probe into the effect of quality control circle activity for improving self care ability of colostomy patients.Methods: QCC was founded to improve the self care ability of colostomy patients. The investigation,causative analysis,development and implementation of countermeasures,and effect confirmation were used to observe the self care ability.Results:After QCC activity,self care ability score of colostomy patients in observation group was higher than that of control group.the number of people who can replace ostomy bag independently was more than that of control group,grasping ostomy related knowledge was better than that in control group,the difference was statistically significant(P <0.05).Conclusion:QCC activity can improve the self care ability and quality of life of colostomy patients.

  7. 品管圈在提高床头交接班完整率中的应用分析%Application of Quality Control Circle in Improving the Completion Rate of Bed Shifting of Duty

    Institute of Scientific and Technical Information of China (English)

    李红文; 柳莎莎; 刘晓梅; 王浩

    2015-01-01

    Objective:To improve the the completion rate of bed shifting of duty via application of quality con-trol circle( QCC) , and to build a harmonious relationship between doctors and nurses and improve nursing moral standards. Methods:After organizing QCC group, taking improving the completion rate of bed shifting of duty as the theme and analyzing the effect, according to the ten steps of QCC to control the quality. Results:The comple-tion rate of bed shifting of duty was improved from 69% to 69%, the patients' satisfaction was improved from an av-erage of 96 to 100 after the implementation of QCC. Conclusion: QCC can improve the completion rate of bed shifting of duty and patients' satisfaction, and thus worth of promoting in routine nursing.%目的:应用品管圈提高床头交接班完整率,从而构建和谐医护患关系及提升护理伦理道德水准。方法成立品管圈活动小组,对老年心血管科目前的床头交接班进行分析,确定提高床头交接班完整率为活动主题,按照品管圈的十大步骤进行质量控制。结果品管圈活动后,床头交接班完整率由原来的69%上升到90%,患者满意度由改善前的平均96分上升到改善后的100分。结论品管圈活动提升了床头交接班的完整率,提高了患者及家属的满意度,改善了护理质量,值得推广。

  8. Improving patient satisfaction with ambulatory surgical care through quality control circle activities%开展品管圈活动提升门诊手术患者满意度

    Institute of Scientific and Technical Information of China (English)

    张健; 白晓霞

    2013-01-01

    Objective To explore the effect of quality control circle (QCC) activities on patient satisfaction with ambulatory surgical care.Methods The operating room nursing staff formed a QCC,delved into problems affecting patient satisfaction with ambulatory surgical care,and formulated solutions to the problems through brainstorming.They put forward improvement schemes and put them into practice.Results Patient overall satisfaction with ambulatory surgical care increased from (6.80 ± 0.57) points before QCC activities to (7.41±0.44) points after the activities,with significant difference found in the scores (P<0.01).Nurses' consciousness in participating nursing management,and job satisfaction were enhanced,and staff's enthusiasm,creativity,and initiative were fully exercised.Conclusion QCC activities help improve quality of ambulatory surgical care and patient satisfaction.%目的 探讨品管圈活动用于提升门诊手术患者满意度的效果.方法 由手术室一线护理人员组成品管圈小组,通过脑力激荡,讨论分析门诊手术患者满意度不高的原因,制订相应的整改措施并组织实施.结果 门诊手术患者总体满意度由活动前(6.80±0.57)分提高到活动后的(7.41±0.44)分,效果显著(P<0.01);护理人员参与护理管理的意识和工作满足感增强,护理人员的积极性、创造性、主动性得到充分发挥.结论 品管圈活动的开展,有利于提高门诊手术服务质量、提升门诊手术患者满意度.

  9. 品管圈活动在提高手术器械包装合格率中的应用%Application of Quality Control Circle activity to improve the qualiifed rate in surgical instruments packaging

    Institute of Scientific and Technical Information of China (English)

    向艺; 郑宣冬

    2014-01-01

    目的:探索通过品管圈活动提高手术器械包装合格率的方法。方法:成立品管圈小组,针对消毒供应中心出现的手术器械包装合格率低的情况,运用品管圈手法进行现状把握、目标设定、要因分析、对策拟定并实施。结果:通过开展品管圈活动,手术器械包装合格率由活动前97.2%提高到99.8%,差异有统计学意义(P<0.01)。结论:开展品管圈活动对提高手术器械包装质量、加强科室间的协作、提升团队精神、快速适应消毒供应中心管理模式变化起到了积极的推动作用。%Objective:To explore the method of improving the rate of qualiifed surgical instruments packaging with the application of Quality Control Circle (QCC) activity. Methods:QCC group was established to grasp the current status, set goals, analyze major factors, form and implement countermeasures with QCC method for the low rate of qualiifed surgical instruments packaging in the disinfection supply center. Result:The rates of qualiifed surgical instruments packaging increased from 97.2%to 99.8%after conducting QCC activities. The difference was statistically significant (P<0.01). Conclusion:QCC activities played a positive role in improving packaging quality of surgical instruments, strengthening collaboration between departments, promoting team spirit, and timely adapting to changes in the management mode of disinfection supply center.

  10. 品质管理活动圈对降低会阴侧切率的应用效果%The application effect of quality control circle in reducing the rate of lateral episiotomy

    Institute of Scientific and Technical Information of China (English)

    任惠琼; 贾金平

    2015-01-01

    Objective To explore effect of quality control circle ( QCC) in reducing the rate of lateral episiotomy and improving the obstetrical nursing quality .Methods 3 871 puerperas with natural labor in the Maternal and Child Health Hospital of Huadu District in 2012 were selected as the control group , 3 600 puerperas with natural labor after the implementation of QCC from 2013 were selected as the observation group .The rate of lateral episiotomy , degree of perineal laceration , incidence of vaginal hematoma , postpartum pain , incidence of postpartum urinary retention , maternal satisfaction , incidence of neonatal asphyxia were retrospectively analyzed.Results The rate of lateral episiotomy [19.0%(684/3 600)], incidence of postpartum pain after 3 days[9.9%(356/3 600)], incidence of postpartum urinary retention [1.3%(45/3 600)], incidence of vaginal hematoma [2.0%(73/3 600)] of the observation group were lower than that of the control group [ 59.2%( 2 292/3 871 )、29.7%( 1 151/3 871 )、2.6%( 102/3 871 )、6.0%(232/3 871) respectively].The incidence of perineal lacerationⅠdegrees [55.9%(2 013/3 600)], incidence of non perineal laceration[20.4%(735/3 600)], maternal satisfaction[97.6%(3 515/3 600)] of observation group were higher than that of control group [31.3%(1 212/3 871)、9.5%(367/3 871)、89.5%(3 465/3 871) respectively] (all P0.05 ) .Conclusion QCC is effective in reducing the incidence of lateral episiotomy and improving the obstetrical nursing quality , which can improve the maternal satisfaction .%目的:探讨品质管理活动圈( quality control circle ,QCC)对降低会阴侧切率及提高产科护理工作质量的应用效果。方法选择广州市花都区妇幼保健院2012年顺产的3871例产妇为对照组,2013年起实施QCC后顺产的3600例产妇为观察组。回顾性分析比较两组产妇的会阴侧切率、会阴裂伤程度、阴道血肿发生率、产后疼痛、产后尿潴留发生率、产妇满意度及新生

  11. On a conjecture concerning helly circle graphs

    Directory of Open Access Journals (Sweden)

    Durán Guillermo

    2003-01-01

    Full Text Available We say that G is an e-circle graph if there is a bijection between its vertices and straight lines on the cartesian plane such that two vertices are adjacent in G if and only if the corresponding lines intersect inside the circle of radius one. This definition suggests a method for deciding whether a given graph G is an e-circle graph, by constructing a convenient system S of equations and inequations which represents the structure of G, in such a way that G is an e-circle graph if and only if S has a solution. In fact, e-circle graphs are exactly the circle graphs (intersection graphs of chords in a circle, and thus this method provides an analytic way for recognizing circle graphs. A graph G is a Helly circle graph if G is a circle graph and there exists a model of G by chords such that every three pairwise intersecting chords intersect at the same point. A conjecture by Durán (2000 states that G is a Helly circle graph if and only if G is a circle graph and contains no induced diamonds (a diamond is a graph formed by four vertices and five edges. Many unsuccessful efforts - mainly based on combinatorial and geometrical approaches - have been done in order to validate this conjecture. In this work, we utilize the ideas behind the definition of e-circle graphs and restate this conjecture in terms of an equivalence between two systems of equations and inequations, providing a new, analytic tool to deal with it.

  12. Application effects of quality circle control on ward oral medication preparation%品管圈在病区口服药准备中的应用效果

    Institute of Scientific and Technical Information of China (English)

    李小娜; 潘岁月; 崔茜

    2015-01-01

    目的 探讨品管圈( QCC )活动在提高病区口服药准备中的应用效果. 方法 2013 年9月—2014年3月,成立品管圈活动小组,通过主题选定、现状把握、目标设定、要因分析、对策拟定及实施和效果确认等流程进行QCC活动,对我科口服药准备的现况进行调查分析,制定相应的对策并组织实施,将活动前后病区口服药准备的正确率进行对比分析. 结果 实施品管圈前病房口服药准备的正确率为73. 66%,活动后正确率为94. 54%,活动前后比较差异有统计学意义(χ2 =29. 938,P<0. 01). 结论 品管圈活动对提高病区口服药准备的正确率效果显著,值得推广.%Objective To explore the application effect of quality control circle ( QCC) on improving the accuracy of preparing oral drugs in ward. Methods The QCC group was established and organized activities from September 2013 to March 2014. QCC activities were conducted by selecting topics, grasping current status, setting goals, analyzing major factors, forming and implementing countermeasures, and confirming effect. The current status of preparing oral drugs in our ward was analyzed from September 2013 to March 2014, then countermeasures were formed and implemented. At last, the accuracy of preparing oral drugs in ward was analyzed before and after QCC activities. Results The accuracy of preparing oral drugs in ward before QCC activities was 73. 66%, and after QCC activities 94. 54% (χ2 =29. 938,P <0. 01). Conclusions QCC activities can improve the accuracy of preparing oral drugs in ward and should be popularized.

  13. 品管圈在提高脑卒中患者ADL训练有效率中的应用%The effect of quality control circle on improving ADL training efficiency among cerebral stroke patients

    Institute of Scientific and Technical Information of China (English)

    蒲树英; 蒋玮; 谭波涛; 张茂舒; 李青; 李良洪

    2015-01-01

    目的:将品管圈应用于脑卒中患者日常生活活动能力(ADL)训练,以提高患者ADL训练的有效率。方法成立品管圈小组,针对康复医学科脑卒中患者ADL训练有效率低的情况,运用品管圈手法进行现状把握、目标设定、要因分析、对策拟定并实施,观察活动前后脑卒中患者ADL训练的有效率。结果通过开展品管圈活动,脑卒中患者ADL训练有效率由活动前的42.67%(32/75)提高到活动后的67.50%(27/40),差异有统计学意义(χ2=6.439,P<0.01)。结论开展品管圈活动能提高脑卒中患者ADL训练的有效率,提升团队凝聚力,规范专科护士培训内容,丰富了专科护理内涵。%Objective To put into the application of quality control circle (QCC) in the ADL training process for cerebral stroke patients to raise the ADL training efficiency. Methods Based on the low efficiency in ADL training of cerebral stroke pa﹣tients in the department of rehabilitation medicine ,the QCC team was established and implemented the measurements such as grasping of current condition,objective setting,analysis of essential factors,countermeasure protocol. It was observed the effective rate of ADL training of cerebral stroke patients. Results It was established ADL team. The ADL training efficiency of cerebral stroke patients was significantly raised from 42.67%(32/75) to 67.50%(27/40),the difference had statistical significance (χ2=6.439, P<0.01). Conclusion The correct application of QCC is helpful for improving ADL training efficiency,strengthening the cohesion of team work,standarding the training content for nurses,playing a positive role in enriching the significance of nursing specialties.

  14. 品管圈活动在降低老年住院患者跌倒风险的管理%Quality control circle for reducing risk of accidental falls of elderly inpatients

    Institute of Scientific and Technical Information of China (English)

    雷红菊; 朱娉怡; 甄洁洁

    2014-01-01

    目的 探索品管圈活动对降低老年住院患者跌倒风险的影响.方法 成立品管圈小组,开展如何减少老年住院患者跌倒风险的活动主题,分析老年住院患者跌倒的风险并采取加强教育培训、加强制度的落实,圈长,圈员定期检查控制、多部门沟通协调的措施,实施质量持续改进.结果 实施品管圈活动后老年住院患着的跌倒发生率从0.14%明显下降到0.05%(x 2=13.26和12.02,P<0.005).结论 开展品管圈活动,能提高患者安全性,减少老年住院患者跌倒发生率,增强了护理人员的安全管理意识.%Objective To investigate the effect of quality control circle(QCC) for reducing the risk of accidental falls of elderly inpatients.Methods A relational seminar was organized and a specific QCC group was set up to analyze the risk factors of accidental falls of elderly inpatients.Some specific activites including enhanced training,implementation of regulations,regular inspection,multi-sectoral communication and coordination were carried out.Results After the implementation of QCC,the ratio of accidental falls of elderly inpatients decreased from 0.14% to 0.05%,with statistical differences (P < 0.005).Conclusions Implementing QCC can make the patients safer,prevent them from accidental falls,and effectively enhance the security management awareness of nurses.

  15. The Southern Ocean CIRCLE initiative

    Science.gov (United States)

    Murphy, E. J.; Ellis-Evans, J. C.

    2003-04-01

    The circumpolar Southern Ocean is the principal ocean connection between the Atlantic, Pacific and Indian Oceans, and exerts a profound influence on world climate through ocean circulation and its major role in the global carbon cycle. It is a major repository of biodiversity and also the only ocean system where significant marine living resources are yet to be fully exploited. However, this key component of the Earth System is still poorly understood, in part due to the logistical problems of a harsh, remote location and the circumpolar nature of the environment. Circumpolar patterns of variability have now been recognized and the current challenge is to understand how, at a circumpolar scale, this variability is generated, its impact on the regional biogeochemical cycles, its interaction with ecosystem processes and the links to global scale processes. Many of these scientific issues can only be addressed by Southern Ocean scale studies, and although a range of national and international research programmes are already targeting particular aspects, the research effort is largely uncoordinated. The European Polar Board is sponsoring a pan-European initiative (Southern Ocean CIRCLE) to coordinate the currently disparate Southern Ocean research effort and this initiative aims to address climate variability, biogeochemical cycling and ecosystem dynamics with particular reference to the links between these aspects in the circumpolar Southern Ocean. This poster outlines the development of the SO CIRCLE initiative, the major areas of science and proposals for implementation. It also outlines how SO CIRCLE will link to other programmes with a Southern Ocean component (e.g. CLIVAR, CliC, GLOBEC, SOLAS). A key aspect of the initiative will be to coordinate European scientific effort in the Southern Ocean with that of the wider international community.

  16. Coherent states on the circle

    CERN Document Server

    Chadzitaskos, G; Tolar, J

    2011-01-01

    We present a possible construction of coherent states on the unit circle as configuration space. In our approach the phase space is the product Z x S^1. Because of the duality of canonical coordinates and momenta, i.e. the angular variable and the integers, this formulation can also be interpreted as coherent states over an infinite periodic chain. For the construction we use the analogy with our quantization over a finite periodic chain where the phase space was Z_M x Z_M. Properties of the coherent states constructed in this way are studied and the coherent states are shown to satisfy the resolution of unity.

  17. 品管圈在降低Braden评分≤16分老年患者压疮发生率中的应用%Application of quality control circle in reducing incidence rate of pressure ulcers in elderly patients whose Braden scale ≤16

    Institute of Scientific and Technical Information of China (English)

    高春红; 吴金凤; 傅阳阳

    2016-01-01

    Objective To explore the application and effect of quality control circle in reducing incidence rate of pressure ulcers in elderly patients whose Braden scale ≤16. Methods The actual reasons in elderly patients with pressure ulcers were found through the application of quality control circle method, which included the following six aspects: single prevention equipment of pressure ulcers; imperfect execution path of prevention measures of pressure ulcers;imperfect prevention process of special patients with pressure ulcers;not improve the risk assessment content of pressure ulcers in time; no educational manual of pressure ulcers prevention with pictures; new progress in pressure ulcer prevention knowledge training of not reach the designated position. According to the true cause, countermeasures were made and standardized management was implementation, and quality improvement was continued. According to the true cause, corresponding measures were formulated and implemented, and the standardized management system was maintained.Results After the implementation of quality control circle, the incidence rate of elderly patients with pressure ulcers whose Braden scale ≤16 points was decreased from 6. 06% to 2. 19% after the implementation of quality control circle. Conclusions The application of quality control circle method in security management of elderly patients whose Braden score ≤ 16 points, can reduce the incidence rate of pressure ulcers in elderly patients whose Braden scale ≤16, and also can improve the quality of nursing, circle member work enthusiasm, creative thinking, responsibility and honor, QCC technique application and team spirit.%目的:探讨品管圈活动在降低Braden评分≤16分老年患者压疮发生率中的应用与效果。方法应用品管圈方法进行原因分析,找出实际造成老年患者压疮发生的原因包括压疮预防用具单一;压疮预防措施的执行路径不完善;特殊患者压疮预防流程

  18. Fairy circle landscapes under the sea

    KAUST Repository

    Ruiz-Reynés, Daniel

    2017-08-03

    Short-scale interactions yield large-scale vegetation patterns that, in turn, shape ecosystem function across landscapes. Fairy circles, which are circular patches bare of vegetation within otherwise continuous landscapes, are characteristic features of semiarid grasslands. We report the occurrence of submarine fairy circle seascapes in seagrass meadows and propose a simple model that reproduces the diversity of seascapes observed in these ecosystems as emerging from plant interactions within the meadow. These seascapes include two extreme cases, a continuous meadow and a bare landscape, along with intermediate states that range from the occurrence of persistent but isolated fairy circles, or solitons, to seascapes with multiple fairy circles, banded vegetation, and

  19. Locating a circle on a sphere

    DEFF Research Database (Denmark)

    Brimberg, Jack; Juel, Henrik; Schöbel, Anita

    2007-01-01

    We consider the problem of locating a spherical circle with respect to existing facilities on a sphere, such that the sum of distances between the circle and the facilities is minimized or such that the maximum distance is minimized. The problem properties are analyzed, and we give solution...... procedures. When the circle to be located is restricted to be a great circle, some simplifications are possible. The models may be used in preliminary studies on the location of large linear facilities on the earth's surface, such as superhighways, pipelines, and transmission lines, or in totally different...

  20. The Application Study of Quality Control Circle Activities in Increase the Special Swallowing Method Awareness of Oral Carcinoma Postoperative Patients%品管圈活动在提高口腔癌术后患者对特殊吞咽方法知晓率中的应用

    Institute of Scientific and Technical Information of China (English)

    葛軻; 李颖雅; 欧阳霞; 葛诗瑶

    2016-01-01

    目的:探讨品管圈活动在提高口腔癌术后患者对特殊吞咽方法知晓率中的效果。方法成立品管圈,选定主题,现状调查,设定目标,解析影响因素,拟定对策并实施,比较活动前后患者对特殊吞咽方法的知晓率。结果实行品管圈活动后,口腔癌术后患者特殊吞咽方法知晓率由活动前的76.67%提升到91.11%,差异有统计学意义(P <0.05)。结论品管圈活动可提高口腔癌术后患者特殊吞咽方法知晓率,有效提高了患者术后生活质量及对医护工作的满意度。%Objective To investigate the application effect of quality control circle activities in increase the special swallowing method aware-ness of oral carcinoma postoperative patients.Methods By establish the quality control circle,DMAICR Define,status survey,goal setting, analyzed factors,developed and implemented strategies.Compared the special swallowing method awareness of patients before and after the ac-tivities.Results After the implementation of the quality control circle,the special swallowing method awareness of oral carcinoma postopera-tive patients raised from 76.67% to 91.11%,the differences were statistically significant (P <0.05).Conclusion The quality control circle activities improved the special swallowing method awareness of oral carcinoma postoperative patients,improve the post -operation life quality and satisfaction of patients.

  1. Practice of quality control circle on improving qualified rate of central venous catheter maintenance%品管圈在提高中心静脉导管维护合格率中的实践

    Institute of Scientific and Technical Information of China (English)

    梁丽贞; 燕嫦

    2015-01-01

    目的:提高ICU患者中心静脉导管( CVC)维护的合格率,减少CVC留置后不良事件的发生。方法通过品管圈( Quality Control Circle,QCC)的建立,确定以“提高ICU患者中心静脉导管维护合格率”为活动主题,把握现状,设定目标,分析原因、制定及实施对策,比较QCC活动前后ICU患者CVC维护的合格率和CVC留置后不良事件的发生率。结果 QCC活动后的实验组CVC维护合格率为91.00%,与QCC活动前的对照组维护合格率78.00%比较,χ2=6.45,P<0.05,差异具有统计学意义;CVC留置后不良事件:QCC活动后的实验组5例(5.00%),与QCC活动前的对照组19例(19.00%)相比,χ2=9.28, P<0.05,差异具有统计学意义。结论运用QCC活动能明显提高CVC维护的合格率、降低CVC留置后不良事件的发生率,值得临床推广应用。%Objective To improve the qualified rate of central venous catheter ( CVC) maintenance, and to reduce the occurrence of adverse events after CVC catheter in ICU patients.Methods Setting up a quality control circle ( QCC ) activity group and designing an activity theme: 'to improving the qualified rate of CVC maintenance in ICU patients'.It is responsible for grasping situation, setting goals, analyzing reasons, creating and implementing countermeasures.Afterwards, the qualified rate of CVC maintenance and the occurrence of adverse events in the activities before and after were compared.Results After activities, the CVC maintain qualified rate of experimental group is 91%, and its rate was 78%before activities.In statistics,χ2 =6.45, P<0.05, the difference was statistically significant.In the adverse reaction, the experimental group had 5 cases (5%) after QCC, while it had 19 cases (19%) before.The contrast was stark, χ2 =9.28; P<0.05, the difference was statistically significant.Conclusions The QCC activity can significantly improve the qualified

  2. 品管圈在降低颅内肿瘤术后颅内感染中的应用%Application of quality control circle activities in decreasing intracranial in-fection after intracranial tumor operation

    Institute of Scientific and Technical Information of China (English)

    胡婧璇; 张文坚; 瞿伟军; 杨莎; 王利君; 敬军; 徐放明

    2016-01-01

    Objective To explore the effect of quality control circle (QCC)activities on decreasing postoperative intracranial infection in patients with intracranial tumor.Methods QCC activity group was set up and the activity theme was established,postoperative intracranial infections in patients with intracranial tumor in a hospital from May 2011 to June 2012 were analyzed retrospectively,causes of postoperative intracranial infection were analyzed, goals were set,feasibility was analyzed,effective rectification measures were made,and were compared with post-operative intracranial infection in patients after implemented QCC from January to December 2013.Results Postop-erative intracranial infection rate in patients with intracranial tumor decreased from 11 .01 %(12/109)before imple-menting QCC activities to 3.64% (4/110)after implementing QCC activities(χ2 =4.395,P =0.036);antimicrobial usage rate elevated from 15.63%(5/32)to 36.36%(16/44)(χ2 =3.985,P =0.046)when operation time >4 hours;qualification rate of surgical hand disinfection elevated from 50.00% (50/100)to 75.00%(75/100)(χ2 =11 .163,P=0.001).Conclusion QCC activity can not only reduce the incidence of postoperative intracranial infection in pa-tients with intracranial tumor,but also make participants master the skills of quality management.%目的:探讨品管圈(QCC)在降低颅内肿瘤患者术后颅内感染中的作用。方法成立 QCC 活动小组,确立活动主题,回顾性分析2011年5月—2012年6月某三甲医院颅内肿瘤手术患者术后颅内感染发生情况,分析其原因、设立目标及分析可行性、制定有效整改措施,与2013年1—12月开展 QCC 活动后的患者(QCC 活动后组)颅内感染发生情况进行比较。结果颅内肿瘤患者术后颅内感染发病率由 QCC 活动前的11.01%(12/109),降至活动后的3.64%(4/110),差异有统计学意义(χ2=4.395,P =0.036);手术时间>4 h

  3. Application of quality control circle in reducing third-degree perineal tear during vaginal birth%品管圈活动在降低会阴Ⅲ度裂伤发生中的应用

    Institute of Scientific and Technical Information of China (English)

    王娜; 卢俊红; 张红茹; 于秋芸

    2015-01-01

    Objective To explore the effect of quality control circle ( QCC) in reducing the incidence of third-degree perineal tear during vaginal birth.Methods Analysis was conducted on the clinical data of patients with third-degree perineal tear during vaginal birth in department of obstetrics in Beijing Tiantan Hospital.Ten staff in the department volunteered to set up QCC to investigate current status, analyze causes, set up aims, execute strategies, check effect and consolidate measures for improving related quality.Results Before conducting QCC the rate of third-degree perineal tear during vaginal birth because of unskilled delivery technique and too strong labor force was 83.33%.After performing QCC, it decreased from 2.88 % to 1.22% during July to December 2014, and the difference was significant(χ2 =1.931,P=0.04).Conclusion Application of QCC can reduce the rate of third-degree perineal tear during vaginal birth and enhance the professional knowledge and skills of the midwives.%目的:探索品管圈活动在经阴道分娩过程中降低会阴Ⅲ度裂伤发生中的应用效果。方法通过对2014年北京天坛医院产科经阴道分娩发生会阴Ⅲ度裂伤患者的临床资料进行分析,产科10名医护人员自愿成立品管圈,通过现状调查、原因分析、设定目标、对策实施、效果检查及巩固措施等程序,开展品管圈活动,进行相关质量改进。结果品管圈实施前,助产技术不熟练、产力过强导致的会阴Ⅲ度裂伤占83.33%;通过此次品管圈活动,在2014年7至12月产房的会阴Ⅲ度裂伤发生率由品管圈实施前的2.88%降至1.22%,差异具有统计学意义(χ2=1.931,P=0.04)。结论品管圈活动应用在产房经阴道分娩患者中,可有效降低会阴Ⅲ度裂伤的发生,同时增强了助产士的专业知识和管理能力。

  4. Application research of quality control circle activities in patients with gestational diabetes%品管圈活动在妊娠合并糖尿病患者的应用研究

    Institute of Scientific and Technical Information of China (English)

    温曲英; 曾美文; 田雪艺

    2015-01-01

    Objective To study and to analyze the application effect of quality control circle activities(QCC)in patients with gestational diabetes.Methods To organize activity group of QCC,to define the activity theme,to study and to analyze the related situations of patients with gestational diabetes,in order to formulate and to implement the corresponding countermeasures according to the existent problems.Results Through the application of QCC,the dietary compliance,SAS,and SDS of patients with gestational diabetes had obtained significantly improvement,the difference of data before and after application had statistical significance(P<0.05).The vaginal delivery rate and the rate of pure breast-feeding had risen obviously.ConclusionThe research results showed that,the application of QCC in patients with gestational diabetes could effectively improve the dietary compliance,SAS and SDS,could improve the vaginal delivery rate and the rate of pure breast-feeding.At the same time, which could further improve the operative enthusiasm and operative initiative,and could strengthen the comprehensive quality and practical operating abilities of medical staff.%目的:研究与分析品管圈活动在妊娠合并糖尿病患者中的应用效果。方法构建品管圈活动小组,明确活动主题,调查分析妊娠合并糖尿病患者的相关情况,针对其所存问题,制定相应的对策且予以实施。结果经品管圈活动的应用,妊娠合并糖尿病患者饮食依从性、SAS以及SDS得到了显著的改善,应用前后数据对比,差异明显有统计学意义(P<0.05);阴道分娩率和纯母乳喂养率明显上升。结论从本次研究的结果来看,在改善妊娠合并糖尿病患者饮食依从性中应用品管圈活动,不仅可有效提高患者饮食依从性,改善患者SAS和SDS评分,提高阴道分娩率和纯母乳喂养率,同时还可进一步提高医护人员工作的积极性以及主动性,增强其综合素质和实践操作能力。

  5. The increasement effect of quality control circle management on the awareness rate of nutritional knowledge in patients with hemodialysis%品管圈管理对血液透析患者营养知识知晓率提高的作用

    Institute of Scientific and Technical Information of China (English)

    徐开香

    2015-01-01

    目的:探讨品管圈管理对血液透析患者营养知识知晓率提高的作用。方法:2014年2月-2015年2月收治血液透析患者89例作为观察组,给予品管圈管理。2013年2月-2014年1月收治血液透析患者80例作为对照组,不进行品管圈管理。结果:观察组营养知识知晓率79.8%明显高于对照组的30.0%(P<0.05);观察组体重增加例数明显多于对照组,高血钾例数明显少于对照组(P<0.05)。结论:品管圈管理可以明显提高血液透析患者营养知识知晓率。%Objective:To explore the increasement effect of quality control circle management on the awareness rate of nutritional knowledge in patients with hemodialysis.Methods:89 patients with hemodialysis were selected from February 2014 to February 2015 as the observation group,and they were given quality control circle management.80 patients with hemodialysis were selected from February 2013 to January 2014 as the control group,and they were not given quality control circle management.Results:The awareness rate(79.8% ) of nutritional knowledge in the observation group was significantly higher than 30.0% of the control group(P<0.05).The gain weight cases of the observation group was significantly more than that of the control group,and the hyperkalemia cases were significantly less than that of the control group(P<0.05).Conclusion:Quality control circle management can significantly improve the awareness rate of nutritional knowledge in patients with hemodialysis.

  6. 品管圈管理在预防神经内科鼻饲管非计划性拔管中的作用%Effect of Quality Control Circle Management in Predicting Unplanned Extu-bation of Nasogastric Feeding Tube in Department of Neurology

    Institute of Scientific and Technical Information of China (English)

    赵爱学

    2016-01-01

    Objective To research the application effect of quality control circle management in predicting unplanned extu-bation of nasogastric feeding tube in department of neurology. Methods 88 cases of patients with nasogastric feeding tube in department of neurology treated in our hospital from November 2012 to December 2015 were selected and divided into two groups according to the application time of quality control circle management, 44 cases of patients without application of quality control circle management from November 2012 to November 2013 were selected as the control group, and 44 cases of patients with application of quality control circle management from December 2013 to December 2015 were selected as the research group, and the incidence rate of unplanned extubation and eight quality and ability scores were compared be-tween the two groups. Results The incidence rate of unplanned extubation in the research group was lower than that in the control group, the eight quality and ability scores such as harmonious degree, quality control technique, enthusiasm, cohe-sive force, sense of joy, communication and coordination, sense of responsibility and problem-solving ability in the research group were higher than those in the control group, and the differences had statistical significance(P<0.05). Conclusion The application of quality control circle management in predicting unplanned extubation of nasogastric feeding tube in depart-ment of neurology is effective, which can improve the comprehensive ability of nursing staff, and it is suitable for promotion and application.%目的:研究在神经内科鼻饲管非计划性拔管预防中品管圈管理的应用效果。方法对2012年11月-2015年12月间在该院接受治疗的神经内科鼻饲患者88例进行研究,以品管圈管理的应用时间作为分界点进行分组,即以2012年11月-2013年11月间44例未应用品管圈管理的患者为对照组,以2013年12月-2015年12月间44例应用品

  7. Euclidean Circles and Their Modular Images.

    Science.gov (United States)

    Austin, Joe Dan

    1990-01-01

    Shows a series of Euclidean equations using the Euclidean algorithm to get the greatest common divisor of two integers. Describes the use of the equations to generate a series of circles. Discusses computer generation of Euclidean circles and provides a BASIC program. (YP)

  8. Unit Circles and Inverse Trigonometric Functions

    Science.gov (United States)

    Barrera, Azael

    2014-01-01

    Historical accounts of trigonometry refer to the works of many Indian and Arab astronomers on the origin of the trigonometric functions as we know them now, in particular Abu al-Wafa (ca. 980 CE), who determined and named all known trigonometric functions from segments constructed on a regular circle and later on a unit circle (Moussa 2011;…

  9. Meromorphic Vector Fields and Circle Packings

    DEFF Research Database (Denmark)

    Dias, Kealey

    to structurally stable vector fields, there is an underlying dynamically defined triangulation of the plane. Circle packings are a means to realize such a given combinatorial structure. About 20 years ago, W. Thurston suggested applying circle packings to obtain approximations to Riemann mappings. This gave rise...

  10. Building Background Knowledge within Literature Circles

    Science.gov (United States)

    Barone, Diane; Barone, Rebecca

    2012-01-01

    The authors examined the strength of literature circles in developing background knowledge--an acknowledged sticking point in the development of understanding for middle graders--with a special focus on the literature circle role of "investigator," where it is student initiative and not teacher direction that guides comprehension. Observing…

  11. Locating a circle on a sphere

    DEFF Research Database (Denmark)

    Brimberg, Jack; Juel, Henrik; Schöbel, Anita

    2003-01-01

    We consider the problem of locating a spherical circle with respect to existing facilities on a sphere, such that the sum of weighted distances between the circle and the facilities is minimized, or such that the maximum weighted distance is minimized. The problem properties are analyzed, and we ...

  12. Locating a circle on a sphere

    DEFF Research Database (Denmark)

    Brimberg, Jack; Juel, Henrik; Schöbel, Anita

    2007-01-01

    We consider the problem of locating a spherical circle with respect to existing facilities on a sphere, such that the sum of distances between the circle and the facilities is minimized or such that the maximum distance is minimized. The problem properties are analyzed, and we give solution proce...

  13. 品管圈在降低我院门诊药房药品过期损耗中的应用%Application of quality control circle in reducing the loss rate of expired medicine in our hospital

    Institute of Scientific and Technical Information of China (English)

    崔晋涛; 刘萍; 曹媛媛; 柴栋

    2014-01-01

    [ABSTRACT]Objective:To explore the effect of quality control circle (QCC) activity in reducing the medicine loss caused by expiration.Methods:Each step was carried out according to QCC. Speciifcally, brainstorming method was applied to analyze the reason of a high level for the expired medicine, ifshbone diagram and association graph were used to explore solutions and evaluate tangible results (reported loss rate of expired medicine), while radar diagram was adopted for assessing intangible outcomes (ability of QCC) and formulating standardized process.Results:The results strongly suggested that the major reasons for high loss rate of expired medicine were the inefifcient communication with doctors about medicine information, the careless omission in pharmacists' work, the frequent change of medicine speciifcation, producer, batch number and the commercial distribution of medicines which were close to the expired date, etc. Corresponding working system and many measures were brought into working process of medicine conservation to improve the situation. As a result, the reported loss rate of the expired drug decreased from 0.230% to 0.021%. Some remarkable elevations in terms of QCC skills, sense of responsibility, team spirit, capability of communication and coordination were registered. Conclusion: Implementation of QCC plays an important role in reducing ratio of the overdue medicines in our hospital.%目的:探讨品管圈活动对降低药品过期造成的药品损耗的效果。方法:成立品管圈,按照品管圈的步骤实施各项活动,运用头脑风暴法分析产生药品过期损耗高的原因,采取鱼骨图及关联图手法探讨解决的对策并实施,评价有形成果(过期药品报损率),采用雷达图评价无形成果(圈能力)。结果:我院过期药品损耗率高的主要原因是医生获得药品信息不.,药师工作有疏漏,频繁更换药品规格、厂家、批号及商业配送近效期药

  14. 品管圈活动在降低血液透析患者动静脉内瘘皮下血肿发生率中的应用价值%Application value on quality control circle activity in hemodialysis pa-tients with arteriovenous internal fistula in the incidence of subcutaneous hematoma

    Institute of Scientific and Technical Information of China (English)

    王晓玲; 丁学梅; 刘丽秀; 朱红; 施丹明

    2014-01-01

    Objective To explore the application effect on quality control circle activity in hemodialysis patients with arteriovenous internal fistula in the incidence of subcutaneous hematoma. Methods Hemodialysis interior ministry 10 nurses voluntarily to form a "circle",establish "reduce static artery fistula in hemodialysis patients the incidence of subcutaneous haematomas" as the theme,the patients with arteriovenous fistula in subcutaneous hematoma incidence dialysis of activities before and after hemodialysis were counted,analyzed,and to formulate and implement corrective actions. Results The arteriovenous fistula in subcutaneous hematoma incidence after the implementation of quality con-trol circle activity was significantly lower than before (P<0.05).Members of the team spirit,professional knowledge,inter-personal relationship,the nursing quality consciousness and mental development and so on various scores were signifi-cantly higher than that of before the implementation of quality control circle activity, he difference was statistically sig-nificant (P<0.05). Conclusion To carry out quality control circle activities can reduce hemodialysis patients with arteri-ovenous fistula in subcutaneous blood kind of incidence,prolong the service life of arteriovenous internal fistula,thus prolonging the survival time,improve the quality of life of patients.%目的:探讨品管圈活动在降低血液透析患者动静脉内瘘皮下血肿发生率中的应用效果。方法血透室内部10名护士自愿组成一个“圈”,确立“降低血液透析患者静动脉内瘘皮下血肿发生率”为活动主题,对活动前后血透透析患者动静脉内瘘皮下血肿发生率进行统计、分析,并制订和落实整改措施。结果实施品管圈活动后动静脉内瘘皮下血肿发生率显著低于活动前(P<0.05);各位成员的团队精神、专业知识、人际关系、护理品质意识与脑力开发等各项评分均显著高于实施品管圈

  15. 品管圈工作模式在五官科人工气道护理中的应用观察%Observation on Application of Quality Control Circle Working Model in the Artificial Airway Nursing in the Department of Ophthalmology and Otorhi-nolaryngology

    Institute of Scientific and Technical Information of China (English)

    蒋霞

    2016-01-01

    Objective To reduce the incidence rate of respiratory tract obstruction of patients with tracheotomy by applying the quality control circle. Methods The quality control circle group was established, the research issue was determined, the objective value was made, and there were 4 causes of respiratory tract obstruction:(1)Formation of sputum scab and blood scab;(2)Exfoliation and haemorrhage of respiratory mucosa;(3)Abjection or rotation of tracheostomy tube;(4)slippage of tube cuff, and 4 real causes were determined:(1)Insufficient humidifying and expectoration intensity and severe Inflamma-tion infection could lead to the formation of sputum scab;(2)The exfoliation of necrotic mucous membrane could lead to the respiratory tract obstruction and induce bronchismus;(3)Tracheotomy tube was displaced and the suction of suction catheter was difficult;(4)The retention time of cannula was long, and the cannula obstruction caused by the balloon rupture led to respiratory tract obstruction, the rectification measures were made and implemented according to causes, and the accurate methods of airway humidity and sputum suction were mastered including lavage of respiratory tract obstruction, fixing the tracheal tube and enhancing the air sac management. Results The incidence rate of respiratory tract obstruction of patients with tracheotomy in our department decreased from 15% before the quality control circle to 2%after the quality control cir-cle, and the difference had statistical significance (P<0.05). Conclusion The development of quality control circle in the respiratory tract management for patients with tracheotomy can reduce the incidence rate of respiratory tract obstruction of patients with tracheotomy.%目的:运用品管圈降低气管切开患者呼吸道阻塞的发生率。方法成立品管圈小组,确定研究主题,制定目标值,分析导致呼吸道阻塞因素主要有4个原因:(1)痰痂、血痂形成;(2)呼吸道黏

  16. Lines, Circles, Planes and Spheres

    CERN Document Server

    Purdy, George B

    2009-01-01

    Let $S$ be a set of $n$ points in $\\mathbb{R}^3$, no three collinear and not all coplanar. If at most $n-k$ are coplanar and $n$ is sufficiently large, the total number of planes determined is at least $1 + k \\binom{n-k}{2}-\\binom{k}{2}(\\frac{n-k}{2})$. For similar conditions and sufficiently large $n$, (inspired by the work of P. D. T. A. Elliott in \\cite{Ell67}) we also show that the number of spheres determined by $n$ points is at least $1+\\binom{n-1}{3}-t_3^{orchard}(n-1)$, and this bound is best possible under its hypothesis. (By $t_3^{orchard}(n)$, we are denoting the maximum number of three-point lines attainable by a configuration of $n$ points, no four collinear, in the plane, i.e., the classic Orchard Problem.) New lower bounds are also given for both lines and circles.

  17. Plasmid Rolling-Circle Replication.

    Science.gov (United States)

    Ruiz-Masó, J A; MachóN, C; Bordanaba-Ruiseco, L; Espinosa, M; Coll, M; Del Solar, G

    2015-02-01

    Plasmids are DNA entities that undergo controlled replication independent of the chromosomal DNA, a crucial step that guarantees the prevalence of the plasmid in its host. DNA replication has to cope with the incapacity of the DNA polymerases to start de novo DNA synthesis, and different replication mechanisms offer diverse solutions to this problem. Rolling-circle replication (RCR) is a mechanism adopted by certain plasmids, among other genetic elements, that represents one of the simplest initiation strategies, that is, the nicking by a replication initiator protein on one parental strand to generate the primer for leading-strand initiation and a single priming site for lagging-strand synthesis. All RCR plasmid genomes consist of a number of basic elements: leading strand initiation and control, lagging strand origin, phenotypic determinants, and mobilization, generally in that order of frequency. RCR has been mainly characterized in Gram-positive bacterial plasmids, although it has also been described in Gram-negative bacterial or archaeal plasmids. Here we aim to provide an overview of the RCR plasmids' lifestyle, with emphasis on their characteristic traits, promiscuity, stability, utility as vectors, etc. While RCR is one of the best-characterized plasmid replication mechanisms, there are still many questions left unanswered, which will be pointed out along the way in this review.

  18. The application of the quality control circle activity in reducing the non-planned extubation rate of gynecology postoperative patients%品管圈活动在降低妇科术后患者非计划性拔管率中的应用

    Institute of Scientific and Technical Information of China (English)

    韩清波; 廖爱红; 陈雪梅

    2016-01-01

    目的::探讨运用品管圈管理工具在降低妇科术后患者非计划性拔管发生率中的作用。方法:在妇科病区成立品管圈活动小组,回顾分析2013年1~4月妇科住院病区腹腔镜及宫腔镜术后放置Ⅰ、Ⅱ类导管患者发生非计划性拔管的状况,通过现状调查与原因分析找出引起非计划性拔管的主要原因,制定相应的防范措施,并组织实施,将改进前、后非计划拔管发生率进行比较。结果:妇科术后患者非计划性拔管发生率由品管圈活动前的1.52%降低至活动后的0.41%,两者比较差异有统计学意义(P<0.05)。结论:通过运用品管圈质量改进工具,有效降低了妇科术后患者非计划性拔管发生率,提高了患者安全管理质量,增强了护理人员的品质意识和参与质量管理的能力,提高了质量改进效率和效果。%Objective:To explore the application effect of the quality control circle management tools in reducing the non-planned extubation rate of gyne-cology postoperative patients. Methods:Built the quality control circle activity team in the gynecology inpatient area. Made retrospective analysis of the non-planned extubation conditions of the patients with type I and type II inserted catheters after the laparoscope operation and hysteroscope operation in the gyne-cology inpatient area from January to April 2013. Through the status investigation and causes analysis,observed the primary causes of the non-planned ex-tubation, then made corresponding precautionary measures and made the organization for implementation. Compared the non-planned extubation occur-rence rate before and after the modification. Results:After the implementation of activity, the non-planned extubation occurrence rate of gynecology postop-erative patients dropped from 1. 52%,which marked before the quality control circle activity, to 0. 41%. The difference had statistic significance ( P<0. 05). Conclusion

  19. Examination of the Circle Spline Routine

    Science.gov (United States)

    Dolin, R. M.; Jaeger, D. L.

    1985-01-01

    The Circle Spline routine is currently being used for generating both two and three dimensional spline curves. It was developed for use in ESCHER, a mesh generating routine written to provide a computationally simple and efficient method for building meshes along curved surfaces. Circle Spline is a parametric linear blending spline. Because many computerized machining operations involve circular shapes, the Circle Spline is well suited for both the design and manufacturing processes and shows promise as an alternative to the spline methods currently supported by the Initial Graphics Specification (IGES).

  20. Circle Detection Based on HSI Color Space

    Institute of Scientific and Technical Information of China (English)

    MAOXia; LIXing-xin; XUEYu-li

    2005-01-01

    A method based on HSI color space is presented to solve the problem of circle detection from color images. In terms of the evaluation to the edge detection method based on intensity, the edge detection based on hue is chosen to process the color image, and the simplified calculation of hue transform is discussed. Then the algorithm of circle detection based on Canny edge detection is proposed. Due to the dispersive distribution of the detected result, Hough transformation and template smooth are used in circle detection, and the proposed method gives a quite good result.

  1. Effect analysis of quality control circle activity improving hand-washing compliance of circulating nurses in operating room%品管圈活动对提高手术室巡回护士洗手依从性效果分析

    Institute of Scientific and Technical Information of China (English)

    万美萍; 吴明琴; 罗媛榕

    2015-01-01

    目的:分析影响护理人员手卫生执行的相关因素,探究品管圈活动对于提高手术室巡回护士洗手依从性及综合素质的效果。方法选取我院12名手术室巡回护士为研究对象,采用品管圈的管理方式对其进行护理干预,比较不同时段内护理人员的洗手依从性及综合素质。结果干预实施前及干预1周后、干预2周后巡回护士的总体洗手执行率分别为72%、80.0%、73.3%,总体洗手执行率在干预1周后显著上升。2周后又回落到了干预前相似水平,干预实施前及干预1周后、干预2周后巡回护士的平均素质得分分别为(52.4±4.6)、(68.0±6.4)、(83.6±8.5),差异均有统计学意义(P<0.01)。结论品管圈活动可以有效提高手术室巡回护士的综合素质,在短期内也可迅速提升其洗手的依从性,但由于品管圈活动缺乏长期监督管理的环境,巡回护士其交接安置患者洗手率会严重回落,直接导致总体洗手依从性会再次回落。%ObjectiveTo analyze related factors of hand hygiene implementation and to explore effect of quality control circle activity on improving hand-washing compliance and comprehensive quality of circulating nurses in operating room.Methods12 circulating nurses of operating room in our hospital were selected as research objects and they were received nursing intervention by management method of quality control circle. Hand-washing compliance and comprehensive quality of nursing staff during different periods were compared.Results Total hand-washing implementation rates before intervention, 1 week after intervention and 2 weeks after intervention of circulating nurses were 72%, 80.0% and 73.3% respectively. Total hand-washing implementation rate of 1 week after intervention was significantly increased while total hand-washing implementation rate of weeks after intervention was the same as that before intervention. Average quality

  2. Effect of quality control circle on control and prevention of multidrug-resistant organisms%品管圈对多药耐药菌预防控制的作用与效果评价

    Institute of Scientific and Technical Information of China (English)

    郑丽英; 何文英; 孙洁; 李静; 李新梅; 张焱; 杨晓燕; 黄新玲

    2015-01-01

    OBJECTIVE To explore the effect of quality control circle (QCC) on management of multidrug-resistant organisms (MDROs) in critical care medicine department .METHODS The QCC team was established in Dec , 2013 .The current status of isolation and control of the MDROs ,awareness of knowledge of MDROs ,and isola-tion rates of MDROs were investigated ,the brainstorming and review of literature were carried out to analyze the causes of the existing problems in the departments so as to put forward and implement the targeted interventions , the current status of isolation and control of MDROs ,awareness rate ,and isolation rates of MDROs were investi-gated again ,the data were compared before and after the QCC activity was implemented ,and the count data were statistically analyzed by using chi-square test .RESULTS After the QCC activity was conducted ,the awareness rate of the isolation and control measures of MDROs increased from 67 .20% to 93 .33% ,respectively ,the isolation rate of MDROs dropped from 50 .42% to 26 .90% ,with significant difference (P<0 .05) .The isolation rate of Escherichia coli decreased from 80 .00% to 23 .77% ,the isolation rate of K lebsiella pneumoniae decreased from 55 .77% to 19 .23% ,and the isolation rate of Pseudomonas aeruginosa decreased from 62 .26% to 26 .47% ,with significant difference (P<0 .05) .The isolation rate of Acinetobacter baumannii dropped from 55 .71% to 53 .95%(P= 0 .908) ,and the isolation rate of methicillin-resistant Staphylococcus aureus dropped from 91 .67% to 33 .33% (P=0 .054) .CONCLUSION The conduct of QCC can raise the rate of implementation of isolation meas-ures of MDROs and reduce the incidence and detection rate of MDROs infections ;it is an ideal management tool .%目的 探讨品管圈(QCC )在重症医学科多药耐药菌管理中的应用效果.方法 2013年12月成立QCC小组 ,调查重症医学科多药耐药菌隔离控制措施现状、多药耐药菌知识知晓率及多药耐药菌检出率 ;

  3. Information flow through the disaster circle

    DEFF Research Database (Denmark)

    Egedorf, Maren Marie; Villanueva Holm-Nielsen, Pablo

    2015-01-01

    not necessarily flow across the phases of the circle in an effective manner. This is particularly true for the information that crosses the disaster point of the circle. Organisations carry out assessments, surveys and baselines for various purposes, at various points of time in the disaster circle. Output......The traditional view of the disaster circle is phase based. Disaster and development professionals recognize that the actions carried out in the various phases of the disaster management cycle are overlapping and build upon each other, having resilience as the overall goal. However information does...... is communicated in long reports that are very time consuming to review. These reports often contain information that is re-gathered in emergency assessments and don’t share the original data upon which conclusions were made. The paper aims to identify information required to make informed decisions in response...

  4. Darboux cyclides and webs from circles

    KAUST Repository

    Pottmann, Helmut

    2012-01-01

    Motivated by potential applications in architecture, we study Darboux cyclides. These algebraic surfaces of order ≤4 are a superset of Dupin cyclides and quadrics, and they carry up to six real families of circles. Revisiting the classical approach to these surfaces based on the spherical model of 3D Möbius geometry, we provide computational tools for the identification of circle families on a given cyclide and for the direct design of those. In particular, we show that certain triples of circle families may be arranged as so-called hexagonal webs, and we provide a complete classification of all possible hexagonal webs of circles on Darboux cyclides. © 2011 Elsevier B.V. All rights reserved.

  5. Enhanced Quantization: The particle on the circle

    CERN Document Server

    Geloun, Joseph Ben

    2012-01-01

    Enhanced quantization is an improved program for overcoming difficulties which may arise during an ordinary canonical quantization procedure. We review here how this program applies for a particle on circle.

  6. Topographic control of sorted circle morphology on Svalbard

    Science.gov (United States)

    Voigt, Joana; Hauber, Ernst; Reiss, Dennis; Hiesinger, Harald; Johnsson, Andreas; van Gasselt, Stephan; Balme, Matt; Head, Jim; de Verra, Jean-Pierre; Steinbrügge, Gregor; Jaumann, Ralf

    2015-04-01

    ). For these morphologies, we also measured the slope, aspect and TWI to correlate the topographical parameters with the geomorphological characteristics of the patterned ground, and with predictions from modeling [7]. Our results confirm that the dependence of morphology on topography of sorted circles can be measured using a combination of plan-view and topographic remote sensing data. Thus, as the same quality of data is available on Mars, these same measurements could be made there in order to test whether the circle morphology depends on the local relief patterns in the same ways as in our terrestrial study. A positive result would argue that the Martian features may have formed in the same way (freeze-thaw) as the terrestrial ones. [1] Washburn, A.L. (1956) Geol. Soc. Amer. Bull. 67, 823-866. [2] Balme et al. (2013) Prog. Phys. Geog. 37, 289-324. [3] Balme et al. (2009) Icarus 200, 30-38. [4] Kreslavsky, M.A., Head, J.W. (2014) LPSC 45, abstract 2715. [5] Hauber et al. (2011) GSA Spec. Paper 483, 177-201. [6] Tolgensbakk, J., Sollid, J.L. (1987) Kvadehuksletta, Geomorfologi og Kvartærgeologi (geomorphological map; scale 1:10,000), Universitet i Oslo. [7] Kessler, M.A., Werner, B.T. (2003) Science 299, 380-383.

  7. 品管圈在降低膝关节镜术后患者早期功能锻炼缺失率中的应用%Application of Quality Control Circle in Reducing Early Functional Exercise of Patients with Knee Arthroscopy

    Institute of Scientific and Technical Information of China (English)

    谌艳; 王钦

    2015-01-01

    目的:探讨品管圈在降低膝关节镜术后患者早期功能锻炼缺失率中的应用效果。方法成立品管圈,通过品管圈活动步骤,运用质量管理常用工具对骨科膝关节镜术后功能锻炼存在问题进行改进.并将改进前后状况进行比较。结果骨科膝关节镜术后患者早期功能锻炼缺失率由开展前的42.90%,降低到19.12%,目标达成率为118.84%,进步率为65.87%。此外,品管圈活动前后所有圈员就解决问题能力、责任心、沟通协调、自信心、团队凝聚力、积极性、品管手法、和谐度等均有明显提高。结论运用品管圈对骨科膝关节镜术后患者早期功能锻炼缺进行管理,医护康配合,不仅提高了患者依从性、功能锻炼正确率及完成率,同时也提高了患者满意度,减少住院费用,提高床位周转率,符合医院等级评审要求,提升了优质护理质量内涵。%Objective To explore the quality control circle in reducing postoperative knee arthroscopy patients with early functional exercise in the application ef ect of the loss rate.Methods To set up quality control circle, circle activities step by QC, using quality management tools used by the improvement of the existing problems of functional exerciseDepartment of orthopedics after arthroscopic knee surgery.And the improved conditionwere compared before. Results The Department of orthopedics after arthroscopic knee surgery in patients with early functional exercise car ied out in front of the loss rate by 42.90%, reduced to 19.12%, the target rate is 118.84%, the improvement rate was 65.87%. In addition, before and after the QCC al members on the problem solving ability, sense of responsibility, communication and coordination, team cohesion, self-confidence, enthusiasm, quality control tools, harmonious degree increased. Conclusion The use of quality control circle of early functional exercise of patients in the Department of

  8. Circle Packing for Origami Design Is Hard

    CERN Document Server

    Demaine, Erik D; Lang, Robert J

    2010-01-01

    We show that deciding whether a given set of circles can be packed into a rectangle, an equilateral triangle, or a unit square are NP-hard problems, settling the complexity of these natural packing problems. On the positive side, we show that any set of circles of total area 1 can be packed into a square of size 8/pi=2.546... These results are motivated by problems arising in the context of origami design.

  9. Application of quality control circle in reducing the adverse reaction of non-steroidal anti-inflammatory drugs in rheumatology department%品管圈在降低风湿科非甾体类抗炎药不良反应中的应用

    Institute of Scientific and Technical Information of China (English)

    蒋楠; 李晓兰; 刘秋玉; 冯子芸; 黄霞霞; 邓小虎

    2014-01-01

    Objective:To evaluate the effect of quality control circle activities in reducing the adverse reaction of non-steroidal anti-inflammatory drugs in rheumatology department. Methods: Quality control circle was set up and PDCA method was applied to analyze the cause of adverse reactions induced by non-steroidal anti-inflammatory drugs, and the corresponding improvement measures were formulated. Reducing adverse reactions associated with non-steroidal anti-inflammatory drugs in rheumatology department was set as the primary goal. Results:By improving the form and content of health education, admission assessment, offering physical and mental support, the occurrence rate of adverse reactions induced by non-steroidal anti-inlfammatory drug decreased from prior 17.1%to now 6.9%. Conclusion:Quality control circle activities reduced the occurrence rate of non-steroidal anti-inlfammatory drugs adverse reactions in rheumatology department and improved the medical security. Meanwhile, teamwork among colleagues was established in the process of data collecting and explaining, overall nursing care was applied well in clinic.%目的:探讨品管圈活动对降低风湿科非甾体类抗炎药不良反应的效果。方法:成立品管圈,运用PDCA法,以降低“风湿科非甾体类抗炎药不良反应”为主题,对发生不良反应的原因进行统计、分析,制定相应的改进措施。结果:通过观察并总结风湿科非甾体类抗炎药不良反应发生的原因,从健康教育的形式、内容、入院评估、身心并护等方面入手,使风湿科非甾体类抗炎药不良反应的发生率从活动前的17.1%降低至活动后的6.9%。结论:品管圈活动降低了风湿科非甾体类抗炎药不良反应的发生率,提高了用药安全性,培养了同事间的团队精神,使责任制整体护理更好的运用于临床工作中。

  10. 品管圈在颅脑外伤院前急救质量管理中的运用效果分析%The application effect of quality control circles applied in the quality management of pre-hospital first aid for craniocerebral trauma

    Institute of Scientific and Technical Information of China (English)

    赵扬; 陈朝霞; 彭婉琳; 颜源均; 程丹

    2016-01-01

    Objective To explore the application effect of quality control circle applied in the quality manage-ment of pre-hospital first aid for craniocerebral trauma. Methods A total of 40 patients with craniocerebral who received trauma emergency treatment in our hospital from January 2013 to December 2013 were selected as the observation group and another 40 patients with craniocerebral who received trauma emergency treatment in our hospital from January 2014 to December 2014 were selected as the control group. All the patients of the two groups and 9 emergency medical per-sonnel were selected as the research objects. The control group received the conventional pre-hospital first aid treatment, while the patients of the observation group received quality control circle for the pre-hospital first aid. Results The mor-tality rate, disability rate, plant survival rate and cure rate of the patients before intervention were 17. 50%, 32. 50%, 10. 00% and 40. 00% respectively. After the intervention, the mortality rate, disability rate, plant survival rate and cure rate of the patients were 2. 50%, 22. 50%, 0. 00% and 75. 00% respectively. After the intervention, the out-come of the patients was significantly better than that before intervention ( P<0. 05 ) . Before intervention, time from call for help to receive professional treatment was ( 23. 46 ± 10. 54 ) minutes, the reaction time of the hospital was (18. 25 ±8. 13) minute. While after the intervention, they were (14. 06 ±10. 00) minute and (5. 82±3. 14) minute respectively. The time from call for help to receive professional treatment and the reaction time of the hospital after in-tervention were obviously shorter than that before intervention ( P<0. 05 ) . Conclusion The quality control circle can effectively improve the quality of pre-hospital emergency for craniocerebral trauma, reduce mortality and morbidity, shorten the time from call for help to receive professional treatment and hospital reaction time, and help

  11. Experiments Testing the Causes of Namibian Fairy Circles.

    Directory of Open Access Journals (Sweden)

    Walter R Tschinkel

    Full Text Available The grasslands on the sandy soils of the eastern edge of the Namib Desert of Namibia are strikingly punctuated by millions of mostly regularly-spaced circular bare spots 2 to 10 m or more in diameter, generally with a margin of taller grasses. The causes of these so called fairy circles are unknown, but several hypotheses have been advanced. In October 2009, we set up experiments that specifically tested four hypothesized causes, and monitored these 5 times between 2009 and 2015. Grass exclusion in circles due to seepage of subterranean vapors or gases was tested by burying an impermeable barrier beneath fairy circles, but seedling density and growth did not differ from barrier-less controls. Plant germination and growth inhibition by allelochemicals or nutrient deficiencies in fairy circle soils were tested by transferring fairy circle soil to artificially cleared circles in the grassy matrix, and matrix soil to fairy circles (along with circle to circle and matrix to matrix controls. None of the transfers changed the seedling density and growth from the control reference conditions. Limitation of plant growth due to micronutrient depletion within fairy circles was tested by supplementing circles with a micronutrient mixture, but did not result in differences in plant seedling density and growth. Short-range vegetation competitive feedbacks were tested by creating artificially-cleared circles of 2 or 4 m diameter located 2 or 6 m from a natural fairy circle. The natural circles remained bare and the artificial circles revegetated. These four experiments provided evidence that fairy circles were not caused by subterranean vapors, that fairy circle soil per se did not inhibit plant growth, and that the circles were not caused by micronutrient deficiency. There was also no evidence that vegetative feedbacks affected fairy circles on a 2 to 10 m scale. Landscape-scale vegetative self-organization is discussed as a more likely cause of fairy circles.

  12. Experiments Testing the Causes of Namibian Fairy Circles.

    Science.gov (United States)

    Tschinkel, Walter R

    2015-01-01

    The grasslands on the sandy soils of the eastern edge of the Namib Desert of Namibia are strikingly punctuated by millions of mostly regularly-spaced circular bare spots 2 to 10 m or more in diameter, generally with a margin of taller grasses. The causes of these so called fairy circles are unknown, but several hypotheses have been advanced. In October 2009, we set up experiments that specifically tested four hypothesized causes, and monitored these 5 times between 2009 and 2015. Grass exclusion in circles due to seepage of subterranean vapors or gases was tested by burying an impermeable barrier beneath fairy circles, but seedling density and growth did not differ from barrier-less controls. Plant germination and growth inhibition by allelochemicals or nutrient deficiencies in fairy circle soils were tested by transferring fairy circle soil to artificially cleared circles in the grassy matrix, and matrix soil to fairy circles (along with circle to circle and matrix to matrix controls). None of the transfers changed the seedling density and growth from the control reference conditions. Limitation of plant growth due to micronutrient depletion within fairy circles was tested by supplementing circles with a micronutrient mixture, but did not result in differences in plant seedling density and growth. Short-range vegetation competitive feedbacks were tested by creating artificially-cleared circles of 2 or 4 m diameter located 2 or 6 m from a natural fairy circle. The natural circles remained bare and the artificial circles revegetated. These four experiments provided evidence that fairy circles were not caused by subterranean vapors, that fairy circle soil per se did not inhibit plant growth, and that the circles were not caused by micronutrient deficiency. There was also no evidence that vegetative feedbacks affected fairy circles on a 2 to 10 m scale. Landscape-scale vegetative self-organization is discussed as a more likely cause of fairy circles.

  13. Expanding-Circle Students Learning "Standard English" in the Outer-Circle Asia

    Science.gov (United States)

    Kobayashi, Yoko

    2011-01-01

    Drawing upon Kachru's concentric circles of English, the present study explores whether middle-class Japanese students who chose to study English solo at private language schools in Singapore diverge from many others who (wish to) study inner-circle English. The study is stimulated by the repeated interdisciplinary findings that, in spite of the…

  14. Maxi-circles and mini-circles in kinetoplast DNA from Trypanosoma cruzi.

    NARCIS (Netherlands)

    W. Leon; A.C.C. Frasch; J.H.J. Hoeijmakers (Jan); F. Fase-Fowler; P. Borst (Piet); F. Brunel; J. Davison

    1980-01-01

    textabstractMaxi-circles are a minor component of kinetoplast DNAs from all trypanosomatids studied, but they have not previously been found in Trypanosoma cruzi; We have spread intact kinetoplast DNA from the epimastigotes of strain Y in protein monolayers and analysed the mini-circle networks by e

  15. Packing circles and spheres on surfaces

    KAUST Repository

    Schiftner, Alexander

    2009-12-01

    Inspired by freeform designs in architecture which involve circles and spheres, we introduce a new kind of triangle mesh whose faces\\' incircles form a packing. As it turns out, such meshes have a rich geometry and allow us to cover surfaces with circle patterns, sphere packings, approximate circle packings, hexagonal meshes which carry a torsion-free support structure, hybrid tri-hex meshes, and others. We show how triangle meshes can be optimized so as to have the incircle packing property. We explain their relation to conformal geometry and implications on solvability of optimization. The examples we give confirm that this kind of meshes is a rich source of geometric structures relevant to architectural geometry.

  16. ENTREPRENEURSHIP EDUCATION AND THE ECONOMY VICIOUS CIRCLES

    Directory of Open Access Journals (Sweden)

    MEDAR LUCIAN ION

    2015-06-01

    Full Text Available Education for sustainable development, involves training honest, active, social and creative persons for ensuring the link between environment, society, economy and politics. Trained entrepreneurs in sustainable development, are the engine system which can bring an economic prosperity. Lack of entrepreneurial education in the last 25 years has led accentuated conditions to avoiding economic development in all reference fields where added value can be achieved. Running away from excessive taxation led to the establishment of vicious circles in the economy. Vicious circles of the economy can be found in saving, tax policy, productive investment and the informal economy. Through this study will present the importance of entrepreneurship education in the real economy and some specifications to exit entrepreneurs from vicious circles of the economy.

  17. Synchronisation in Coupled Sine Circle Maps

    CERN Document Server

    Chatterjee, N; Chatterjee, Nandini; Gupte, Neelima

    1995-01-01

    We study the spatially synchronized and temporally periodic solutions of a 1-d lattice of coupled sine circle maps. We carry out an analytic stability analysis of this spatially synchronized and temporally periodic case and obtain the stability matrix in a neat block diagonal form. We find spatially synchronized behaviour over a substantial range of parameter space. We have also extended the analysis to higher spatial periods with similar results. Numerical simulations for various temporal periods of the synchronized solution, reveal that the entire structure of the Arnold tongues and the devil's staircase seen in the case of the single circle map can also be observed for the synchronized coupled sine circle map lattice. Our formalism should be useful in the study of spatially periodic behaviour in other coupled map lattices.

  18. Packing circles and spheres on surfaces

    KAUST Repository

    Schiftner, Alexander

    2009-01-01

    Inspired by freeform designs in architecture which involve circles and spheres, we introduce a new kind of triangle mesh whose faces\\' incircles form a packing. As it turns out, such meshes have a rich geometry and allow us to cover surfaces with circle patterns, sphere packings, approximate circle packings, hexagonal meshes which carry a torsion-free support structure, hybrid tri-hex meshes, and others. We show how triangle meshes can be optimized so as to have the incircle packing property. We explain their relation to conformal geometry and implications on solvability of optimization. The examples we give confirm that this kind of meshes is a rich source of geometric structures relevant to architectural geometry. © 2009 ACM.

  19. Study Circles and Socio-cultural Animation

    Directory of Open Access Journals (Sweden)

    Vilma Malečkar

    2001-12-01

    Full Text Available Informal learning and participating in study circles is a way of applying the ideas of socio-cultural animation. It is based on the assumption that within a society there are mechanisms that institutions don't comprise and therefore don't fulfil various, often urgent needs deriving from everyday life and the community. What is going on here is identifying and solving burning problems; some of them have already become an integral part of the way of living in a community. Study circles as an informal phenomenon in Slovenia create new possibilities of social activities based on common learning and participating in a community.

  20. Partial covering of a circle by equal circles. Part I: The mechanical models

    Directory of Open Access Journals (Sweden)

    Zsolt Gáspár

    2014-05-01

    Full Text Available How must n equal circles of given radius be placed so that they cover as great a part of the area of the unit circle as possible? To analyse this mathematical problem, mechanical models are introduced. A generalized tensegrity structure is associated with a maximum area configuration of the n circles, whose equilibrium configuration is determined numerically with the method of dynamic relaxation, and the stability of equilibrium is investigated by means of the stiffness matrix of the tensegrity structure. In this Part I, the principles of the models are presented, while an application will be shown in the forthcoming Part II.

  1. AN ITERATIVE EQUATION ON THE UNIT CIRCLE

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    A functional equation of nonlinear iterates is discussed on the circle S1 for its continuous solutions and differentiable solutions. By lifting to R, the existence, uniqueness and stability of those solutions are obtained. Techniques of continuation are used to guarantee the preservation of continuity and differentiability in lifting.

  2. Quantization of Presymplectic Manifolds and Circle Actions

    CERN Document Server

    Silva, A C; Tolman, S; Silva, Ana Canas da; Karshon, Yael; Tolman, Susan

    1997-01-01

    We prove several versions of "quantization commutes with reduction" for circle actions on manifolds that are not symplectic. Instead, these manifolds possess a weaker structure, such as a spin^c structure. Our theorems work whenever the quantization data and the reduction data are compatible; this condition always holds if we start from a presymplectic (in particular, symplectic) manifold.

  3. Raccoon Circles: A Handbook for Facilitators.

    Science.gov (United States)

    Cain, Jim

    This handbook presents a collection of over 35 experiential and adventure-based activities using only a single item of equipment--a 15-foot long section of 1-inch tubular climbing webbing, called a raccoon circle. Some of the activities are quiet, some are loud, and they range from low to high challenge levels. Different-sized groups can be…

  4. Syllable Circles for Pronunciation Learning and Teaching

    Science.gov (United States)

    Whipple, John; Cullen, Charlie; Gardiner, Keith; Savage, Tim

    2015-01-01

    Syllable Circles are interactive visualizations representing prominence as a feature in short phrases or multi-syllable words. They were designed for computer-aided pronunciation teaching. This study explores whether and how interactive visualizations can affect language learners' awareness of prominence, or stress, in English pronunciation. The…

  5. THREE CIRCLES MODEL REVITALISASI LEMBAGA PENGELOLA ZAKAT

    Directory of Open Access Journals (Sweden)

    Yulinartati Yulinartati

    2013-12-01

    of revitalization of management of zakat, infak, and sadaqah institutions. Type of research is survey research by applying descriptive qualitative method. The results of this study found that management needs to revitalize institutions of zakat, infak, and sedekah as described in the Three Circles Model.

  6. On circle map coupled map lattice

    CERN Document Server

    Ahmed, E

    2002-01-01

    Circle map in one and two dimensions is studied. Both its stability, synchronization using bounded control and persistence is discussed. This work is expected to be applicable in ecology where spatial effects are known to be important. Also it will be relevant to systems where delay effects are not negligible.

  7. Mathematics Teachers Circle around Problem Solving

    Science.gov (United States)

    Fernandes, Anthony; Koehler, Jacob; Reiter, Harold

    2011-01-01

    Making problem solving a central part of teaching may be challenging to teachers who have limited experiences in learning and teaching mathematics in this way. Math Teachers' Circles were developed with the aim of establishing a "culture of problem solving" among middle school mathematics teachers. This culture could then be carried back into…

  8. Community Social Work and the Learning Circle

    Science.gov (United States)

    Lavan, Ann

    2008-01-01

    Outlines an approach for introducing students to Community Social Work by use of clear, engaging stated objectives. Approach is called the Learning Circle and was devised as a tool to enhance student participation and to stimulate networking, dialogue and conversation about social work commitment to community intervention and community-based…

  9. Influence of quality control circle combined with case tracking method on the limb functional exercise compliance and rehabilitation after breast cancer%品管圈联合个案追踪法对乳腺癌术后患者患肢功能锻炼依从性及康复的影响

    Institute of Scientific and Technical Information of China (English)

    罗爱萍; 林雪虹; 何颜英; 刘莉萍; 黎国基; 梁国仪

    2016-01-01

    Objective To explore the effect of quality control circle combined with case tracking method on the limb functional exercise compliance and rehabilitation after breast cancer operation.Methods 80 breast cancer patients who accepted modified radical mastectomy were divided into experimental group (n=40) and control group (n=40).Patients in control group accepted routine nursing and health education,and patients in experimental group accepted quality control circle,PDCA cycle management,case tracking method,and rehabilitation guide for three months through telephone follow-up after operation.The compliance and rehabilitation effect were evaluated at the end of three months after being discharged.Results The score of functional exercise compliance in experimental group was significantly higher than that in control group,with statistically significant difference (P<0.05).The angles of abduction,flexion,extension,and internal-external rotation of shoulder joint in experimental group were obviously better than those in control group (P<0.05).Conclusions Quality control circle combined with case tracking method,PDCA cycle management,and telephone follow-up can improve the compliance of limb functional exercise after breast cancer operation,promote the recovery of limb function,improve the life quality,and urge patients to return to the society as soon as possible.%目的 探讨品管圈联合个案追踪法对乳腺癌术后患者患肢功能锻炼依从性及康复的效果.方法 选择80例乳腺癌改良根治术患者,按时间段分为实验组和对照组各40例,对照组采用常规术前术后护理、健康教育和使用乳腺癌术后康复操作为功能锻炼方法,实验组在此基础上开展品管圈活动,引入PDCA循环管理,联合个案追踪法,术后电话随访进行跟踪式康复指导3个月.出院前和出院后3个月评价两组患者患肢功能锻炼依从性以及康复效果.结果 实验组患肢功能锻炼依从性得分明显

  10. Locating a circle on the plane using the minimax criterion

    OpenAIRE

    2006-01-01

    We consider the problem of locating a circle with respect to existing facilities on the plane, such that the largest weighted distance between the circle and the facilities is minimized. The problem properties are analyzed, and a solution procedure proposed.

  11. Locating a circle on the plane using the minimax criterion

    DEFF Research Database (Denmark)

    Brimberg, Jack; Juel, Henrik; Schoebel, Anita

    2006-01-01

    We consider the problem of locating a circle with respect to existing facilities on the plane, such that the largest weighted distance between the circle and the facilities is minimized. The problem properties are analyzed, and a solution procedure proposed.......We consider the problem of locating a circle with respect to existing facilities on the plane, such that the largest weighted distance between the circle and the facilities is minimized. The problem properties are analyzed, and a solution procedure proposed....

  12. The "Us" in Discuss: Grouping in Literature Circles

    Science.gov (United States)

    Batchelor, Katherine

    2012-01-01

    This article describes one middle school teacher's use of literature circles using heterogeneous grouping. It begins with a brief rationale for using literature circles in the language arts classroom. Next, it describes techniques to form literature circles. Then, it shares how to build and establish a supportive environment within each group. It…

  13. Locating a general minisum 'circle' on a plane

    DEFF Research Database (Denmark)

    Brimberg, Jack; Juel, Henrik; Körner, Mark-Christoph

    2011-01-01

    We approximate a set of given points in the plane by the boundary of a convex and symmetric set which is the unit circle of some norm. This generalizes previous work on the subject which considers Euclidean circles only. More precisely, we examine the problem of locating and scaling the unit circle...

  14. Optimal State Estimation of Pure Qubits on Circles

    Institute of Scientific and Technical Information of China (English)

    A. Ugulava; ZHANG Li-Hua; L. Chotorlishvili; SONG Wei; V. Skrinnikov; CAO Zhuo-Liang; G. Mchedlishvili

    2008-01-01

    We consider the problem of state estimation of qubits chosen from circles. It is shown that any qubit encoded in pairs chosen from a fixed circle parallel to the x-y equator with different phases contains the same information. We also investigate the problem of state estimation of qubits from three circles. The optimal estimation fidelity is derived.

  15. A Spring Playscape Project: Building a Tree Circle

    Science.gov (United States)

    Keeler, Rusty

    2009-01-01

    The Tree Circle is a green gathering area for children made by planting trees in a circle. For children, the Tree Circle becomes a magical place for dramatic play, quiet retreat, or lively nature exploration. For teachers and parents it becomes a shady grove for snacks and stories. The trees create a sweet spot that changes during the seasons and…

  16. A Spring Playscape Project: Building a Tree Circle

    Science.gov (United States)

    Keeler, Rusty

    2009-01-01

    The Tree Circle is a green gathering area for children made by planting trees in a circle. For children, the Tree Circle becomes a magical place for dramatic play, quiet retreat, or lively nature exploration. For teachers and parents it becomes a shady grove for snacks and stories. The trees create a sweet spot that changes during the seasons and…

  17. Yoctomole electrochemical genosensing of Ebola virus cDNA by rolling circle and circle to circle amplification.

    Science.gov (United States)

    Carinelli, S; Kühnemund, M; Nilsson, M; Pividori, M I

    2017-07-15

    This work addresses the design of an Ebola diagnostic test involving a simple, rapid, specific and highly sensitive procedure based on isothermal amplification on magnetic particles with electrochemical readout. Ebola padlock probes were designed to detect a specific L-gene sequence present in the five most common Ebola species. Ebola cDNA was amplified by rolling circle amplification (RCA) on magnetic particles. Further re-amplification was performed by circle-to-circle amplification (C2CA) and the products were detected in a double-tagging approach using a biotinylated capture probe for immobilization on magnetic particles and a readout probe for electrochemical detection by square-wave voltammetry on commercial screen-printed electrodes. The electrochemical genosensor was able to detect as low as 200 ymol, corresponding to 120 cDNA molecules of L-gene Ebola virus with a limit of detection of 33 cDNA molecules. The isothermal double-amplification procedure by C2CA combined with the electrochemical readout and the magnetic actuation enables the high sensitivity, resulting in a rapid, inexpensive, robust and user-friendly sensing strategy that offers a promising approach for the primary care in low resource settings, especially in less developed countries. Copyright © 2016 Elsevier B.V. All rights reserved.

  18. 品管圈活动在降低血液透析患者内瘘穿刺渗血发生率中的应用%Application of quality control circle activities in reducing the incidence rate of fistula puncture bleeding in hemodialysis patients

    Institute of Scientific and Technical Information of China (English)

    童赟; 林泽文; 李英文; 刘艳华; 黄霞

    2013-01-01

    Objective To probe into the application effect of quality control circle (QCC) activity in reducing the incidence rate of fistula puncture bleeding in hemodialysis patients.Methods Thirty-six hemodialysis patients in our hospital from January to June 2012 were chosen as the control group (before the QCC activity) ; 36 hemodialysis patients with the same rule in 1 group from July to December 2012 were chosen as the experiment group (after the QCC activity).Six nurses from nephrology volunteer to group a "circle" in order to build-up the QCC activity with the subject of reducing the blood exudation rate during hemodialysis fistula piercing.Before the QCC activity,the data of blood exudation rate was calculated,and the root cause of blood exudation was analyzed during hemodialysis fistula piercing; then the improvement plan was made-up,and the counter measure was implemented.The blood exudation rate during hemodialysis fistula piercing was compared before and after the QCC activity.Results The incidence rate of fistula puncture bleeding after QCC activity was 3.76%,was lower than 7.66% before the QCC activity,and was better than the origin target,and the differences were statistically significant (x2 =20.634,P < 0.05).Conclusions The implementation of QCC activity is not only benefit to reducing the incidence rate of fistula puncture bleeding in hemodialysis patients,but also is good at circle members' professional technical level and quality management capability,promote the quality improvement of hemodialysis.%目的 探讨品管圈活动在降低血液透析患者内瘘穿刺渗血发生率中的应用效果.方法 选择广东省第二人民医院肾内科2012年1-6月规律血液透析患者36例,设为品管圈活动前;2012年7-12月,同组规律血液透析患者36例,设为品管圈活动后.肾内科内部6名护士自愿组成一个“圈”,确立“降低血液透析患者内瘘穿刺渗血发生率”为活动主题,对活动前血液透析过程

  19. The application of quality control circles in reducing skin allergy rate on sticking spots after PICC catheterization%品管圈在降低PICC置管术后敷贴部位皮肤过敏率中的应用

    Institute of Scientific and Technical Information of China (English)

    邓琴; 易敏; 黄国会; 张月; 刘为; 陈文均

    2015-01-01

    目的:探讨品管圈活动对PICC置管患者敷贴部位皮肤过敏率的影响。方法选取2014年1月1日至2014年6月30日在某三级甲等医院行PICC导管维护的肿瘤患者581例,实施品管圈活动前(2014年1月1日至3月15日)305例,实施品管圈活动后(2014年3月16日至6月30日)280例。观察实施品管圈前后皮肤过敏情况,评价品管活动前后QCC成员个人能力及团队功能。结果品管圈活动前后PICC置管患者敷贴部位皮肤过敏率由12.6%(38/301)降低到4.3%(12/280),差异有统计学意义(χ2=12.825,P<0.01);QCC成员个人能力及团队功能得以提升。结论通过运用品管圈的管理方法,降低了PICC置管术后敷贴部位皮肤过敏率,说明QCC是护理工作有效科学管理方法。%Objective To study the effects of quality control circles(QCC) activities in reducing skin allergy rate on stick-ing spots after PICC catheterization. Methods A total of 581 tumor patients treated with PICC catheterization admitted by a cer-tain grade A class 3 hospital from January 1,2014 to June 30,2014 were collected,including 305 cases before joining in quality control circles(QCC) activities(January 1,2014-March 15,2014) and 280 cases after joining in quality control circles(QCC) activities(March 16,2014-June 30,2014). It is observed the skin allergy condition, personal abilities and team functions of QCC members before and after the implementation of QCC activities. Results The skin allergy rate[12.6%(38/301)] of the patients with PICC catheterization before QCC activities was reduced to 4.3%(12/280)] after QCC activities. The difference had statistical sig nificance(χ2=12.825,P<0.01). The individual abilities and team functions of QCC members were improved. Conclusion The ap-plication of QCC activities may reduce the allergy rate of the PICC catheterization ,demonstrating that QCC is a scientific man-agement method for nursing work.

  20. PACKING CIRCLES WITHIN CIRCULAR CONTAINERS: A NEW HEURISTIC ALGORITHM FOR THE BALANCE CONSTRAINTS CASE

    Directory of Open Access Journals (Sweden)

    Washington Alves de Oliveira

    Full Text Available ABSTRACT In this work we propose a heuristic algorithm for the layout optimization for disks installed in a rotating circular container. This is a unequal circle packing problem with additional balance constraints. It proved to be an NP-hard problem, which justifies heuristics methods for its resolution in larger instances. The main feature of our heuristic is based on the selection of the next circle to be placed inside the container according to the position of the system's center of mass. Our approach has been tested on a series of instances up to 55 circles and compared with the literature. Computational results show good performance in terms of solution quality and computational time for the proposed algorithm.

  1. Robust Controller Synthesis Based on Circle Criterion

    Science.gov (United States)

    Fuwa, Katsuhiko; Kato, Hiroyuki; Kando, Hisashi

    It is well-known that stability margins (gain and phase margins) are important quantitative indicators for evaluating stability in feedback control system synthesis. However, when we use conventional techniques based on such stability margins, it may be difficult to suppress the vibration from high-order modes of mechanical system. This paper proposes the robust controller synthesis which achieves both the conventional stability margins and the second phase margin which is a quantitative indicator for suppressing the vibration. The basic idea is to synthesize controller such that the Nyquist locus of open-loop transfer function encircles the immediate outer side of the circle which is specified by the conventional stability margins and the second phase margin. This is formulated as modified H∞ mixed sensitivity problem with the weighting constants which are decided by the center and radius of the circle.

  2. Circle Points Discharge Tube Current Controller

    Institute of Scientific and Technical Information of China (English)

    Meng Jinjia; Meng Lisheng

    2005-01-01

    Circle points discharge tube current controller is a new type device to limit theoutput of high voltage discharge current. Circle points uniform corona discharge to form airionization current in the discharge tube. On the outside, even if the discharge electrode is sparkdischarging or the two discharge electrodes are short circuited, the air ionization current in the tuberemains within a stable range, and there is no spark discharge. In this case, when the dischargecurrent only increases slightly, the requirement to limited current is obtained. By installing thecontroller at a discharge pole with a small power but high voltage supply, we can realize the shiftbetween the continuous spark line discharge and corona discharge. This provides a new simpledevice for spark discharge research and is a supplement to the Townsend discharge experiment.

  3. Function representation with circle inversion map systems

    Science.gov (United States)

    Boreland, Bryson; Kunze, Herb

    2017-01-01

    The fractals literature develops the now well-known concept of local iterated function systems (using affine maps) with grey-level maps (LIFSM) as an approach to function representation in terms of the associated fixed point of the so-called fractal transform. While originally explored as a method to achieve signal (and 2-D image) compression, more recent work has explored various aspects of signal and image processing using this machinery. In this paper, we develop a similar framework for function representation using circle inversion map systems. Given a circle C with centre õ and radius r, inversion with respect to C transforms the point p˜ to the point p˜', such that p˜ and p˜' lie on the same radial half-line from õ and d(õ, p˜)d(õ, p˜') = r2, where d is Euclidean distance. We demonstrate the results with an example.

  4. CHARACTERISTICS OF HYDROCARBON EXPLOITATION IN ARCTIC CIRCLE

    Directory of Open Access Journals (Sweden)

    Vanja Lež

    2013-12-01

    Full Text Available The existence of large quantities of hydrocarbons is supposed within the Arctic Circle. Assumed quantities are 25% of the total undiscovered hydrocarbon reserves on Earth, mostly natural gas. Over 500 major and minor gas accumulations within the Arctic Circle were discovered so far, but apart from Snøhvit gas field, there is no commercial exploitation of natural gas from these fields. Arctic gas projects are complicated, technically hard to accomplish, and pose a great threat to the return of investment, safety of people and equipment and for the ecosystem. Russia is a country that is closest to the realization of the Arctic gas projects that are based on the giant gas fields. The most extreme weather conditions in the seas around Greenland are the reason why this Arctic region is the least explored and furthest from the realization of any gas project (the paper is published in Croatian .

  5. Morphometric analysis of Willis circle arteries

    Directory of Open Access Journals (Sweden)

    Alma Voljevica

    2013-01-01

    Full Text Available Introduction: Willis arterial circle (circulus arteriosus cerebri Willisi is the most important part of the collateral circulatory system of the brain. It functions in normal and pathological situations such as valvular mechanism and thus allows optimal blood supply of all parts of the brain tissue, which reduces the risk of transient ischemic attack (TIA and stroke. The main pre-requisite for the normal function of the circle is its completeness and the lack of hypoplastic vessels. Materials and Methods: In this research, we used 100 angiograms of carotid system shown by serial angiography by Seldinger taken from the archives of the Department of Radiology, Clinical Center University of Sarajevo. For morphometric analysis of blood vessels, we used specially designed software program ELLIPSE (ViDiTo, Zoltan Tomoris, Kosice, Slovak Republic, tomori@saske.sk. In this way, it was possible to more easily store and analyze angiograms that were used for morphometric analysis. Results: In our study, larger diameters of blood vessels in Willis circle were observed in the younger subjects compared to older except the diameter of the internal carotid artery, which was about 0.2 to 0.3 mm larger in the older subjects. In both age groups among males, we recorded larger diameters of the internal carotid artery and segment before the circle of the posterior cerebral artery in relation to the female population, while the rear communicating artery in females was 0.1 mm wider in diameter compared to men in category of younger respondents.

  6. The Bakhtin Circle and Applied Linguistics

    Directory of Open Access Journals (Sweden)

    Newton Duarte Molon

    2012-11-01

    Full Text Available This article aims at presenting the relations between the theoretical formulations of the Bakhtin Circle and the current discussion on the scope of the so called Applied Linguistics (AL. In order to do that, we will briefly outline the history of AL, present the main conceptions of the Bakhtin Circle‟s thought, and build possible dialogues between the theoretical formulations of the Russian thinkers and the main issues of the current debate in Applied Linguistics.

  7. Rolling circle amplification of metazoan mitochondrialgenomes

    Energy Technology Data Exchange (ETDEWEB)

    Simison, W. Brian; Lindberg, D.R.; Boore, J.L.

    2005-07-31

    Here we report the successful use of rolling circle amplification (RCA) for the amplification of complete metazoan mt genomes to make a product that is amenable to high-throughput genome sequencing techniques. The benefits of RCA over PCR are many and with further development and refinement of RCA, the sequencing of organellar genomics will require far less time and effort than current long PCR approaches.

  8. The life cycle and life span of Namibian fairy circles.

    Science.gov (United States)

    Tschinkel, Walter R

    2012-01-01

    In Namibia of southwestern Africa, the sparse grasslands that develop on deep sandy soils under rainfall between 50 and 100 mm per annum are punctuated by thousands of quasi-circular bare spots, usually surrounded by a ring of taller grass. The causes of these so-called "fairy circles" are unknown, although a number of hypotheses have been proposed. This paper provides a more complete description of the variation in size, density and attributes of fairy circles in a range of soil types and situations. Circles are not permanent; their vegetative and physical attributes allow them to be arranged into a life history sequence in which circles appear (birth), develop (mature) and become revegetated (die). Occasionally, they also enlarge. The appearance and disappearance of circles was confirmed from satellite images taken 4 years apart (2004, 2008). The frequency of births and deaths as a fraction of the total population of circles allowed the calculation of an approximate turnover rate, and from this, an estimate of circle lifespan. Lifespan appeared to vary with circle size, with small circles averaging about 24 years, and larger ones 43-75 years. Overall lifespan averaged about 41 yr. A second, independent estimate of lifespan was made by revisiting circles 2 to 9 years after their clear status had been confirmed. This resulted in a lifespan estimate of about 60 years. Any causal explanation of fairy circles must include their birth, development and death, their mean lifespan and the variation of their features under different conditions.

  9. The life cycle and life span of Namibian fairy circles.

    Directory of Open Access Journals (Sweden)

    Walter R Tschinkel

    Full Text Available In Namibia of southwestern Africa, the sparse grasslands that develop on deep sandy soils under rainfall between 50 and 100 mm per annum are punctuated by thousands of quasi-circular bare spots, usually surrounded by a ring of taller grass. The causes of these so-called "fairy circles" are unknown, although a number of hypotheses have been proposed. This paper provides a more complete description of the variation in size, density and attributes of fairy circles in a range of soil types and situations. Circles are not permanent; their vegetative and physical attributes allow them to be arranged into a life history sequence in which circles appear (birth, develop (mature and become revegetated (die. Occasionally, they also enlarge. The appearance and disappearance of circles was confirmed from satellite images taken 4 years apart (2004, 2008. The frequency of births and deaths as a fraction of the total population of circles allowed the calculation of an approximate turnover rate, and from this, an estimate of circle lifespan. Lifespan appeared to vary with circle size, with small circles averaging about 24 years, and larger ones 43-75 years. Overall lifespan averaged about 41 yr. A second, independent estimate of lifespan was made by revisiting circles 2 to 9 years after their clear status had been confirmed. This resulted in a lifespan estimate of about 60 years. Any causal explanation of fairy circles must include their birth, development and death, their mean lifespan and the variation of their features under different conditions.

  10. Application of quality control circle management in the prevention of accidental prolapse of gastric tube in patients with cerebral-vascular disease%品管圈管理预防脑血管病患者胃管意外滑脱的效果

    Institute of Scientific and Technical Information of China (English)

    马虹颖; 杨存美; 冯瑞娟

    2014-01-01

    目的:探讨品管圈管理在预防脑血管病患者胃管滑脱中的作用。方法成立品管圈,应用头脑风暴法确立预防胃管滑脱为活动的主题,拟定计划,分析现状,统计绘制柏拉图及鱼骨图分析原因,针对3项主要原因设定目标,制定对策,将实施对策进行效果确认、标准化,修改并制定科室的胃管管理制度。结果实施措施后我科脑血管留置胃管患者拔管率由27.5%(55/200)降低至5.0%(10/200),差异有统计学意义(χ2=27.05,P<0.01);设定的目标值均已达到,目标达成率115%,进步率81%。圈员责任心、自信心、积极性、解决问题的能力、团队凝聚力等方面的能力得到提升。结论品管圈管理研究了影响胃管滑脱的主要因素,制定了切实有效的预防措施,有效解决了胃管滑脱的问题,提高了护士的综合素质,提高了临床护理质量。%Objective To investigate the effect of quality circle control ( QCC ) management in the prevention of accidental prolapse of gastric tube in patients with cerebral -vascular disease .Methods First, we set up the quality control circle , identified the theme , analyzed the current situation and drew the Pareto diagram and fishbone diagram to find out the three main causes .Then we set up the goals and developed strategies .At last we confirmed and standardized the results , modified and formulated the tube management system . Results After applying the QCC management , the extubation rate significantly reduced from 27.5%(55/200) to 5.0%(10/200) (χ2 =27.05,P<0.01), with an achievement rate of 115%and progress rate of 81%.The responsibility, self-confidence, initiative, problem solving ability, team cohesion, communicate and coordinated ability, happiness and quality control means had improved after the application of QCC management . Conclusions The application of QCC management can effectively solve the

  11. 品管圈活动改善卒中患者院前急救气道护理的效果观察%Value of Quality Control Circle Activity Improving the Nursing Effect of Pre-hospital Emergency Airway Nursing of Patients with Stroke

    Institute of Scientific and Technical Information of China (English)

    王丽; 张富强

    2015-01-01

    目的:探讨品管圈活动改善卒中患者院前急救气道护理的效果。方法2014年2月由我院急救中心10名工作人员组成品管圈,确定活动主题为“改善卒中患者院前急救气道护理效果”。根据PDCA操作程序进行卒中患者院前急救气道护理现状和护理效果不佳的原因分析,制定活动目标并根据5 W2 H原则制定对策,实施对策并以改善前后患者预后和并发症发生情况、患者对护理的综合满意度及圈员素质改善情况评价本次品管圈活动效果。结果改善后患者死亡、呼吸衰竭、昏迷、肺不张、呼吸道梗阻等的发生率分别低于改善前的情况,差异有统计学意义( P<0.05)。与改善前比较,改善后患者对护理操作技术、生活护理、健康教育、服务态度、整体印象等方面的满意度均提高,差异有统计学意义( P<0.05)。改善后全体圈员在品管圈手法应用、护理品质意识、自信心、责任感、团队凝聚力等方面的素质均较改善前提高,差异有统计学意义( P<0.05)。结论品管圈管理应用于卒中患者院前急救气道护理可有效改善患者的预后情况,提高患者对护理的综合满意度和圈员素质,提高卒中患者院前急救气道护理效果,值得临床推广应用。%Objective To investigate the value of quality control circle ( QCC) activity improving the nursing effect of pre-hospital e-mergencyairwaynursingofpatientswithstroke.Methods 10ICUstaffformedQCCinFebruary,2014.Activitythemedeterminedas“improving the nursing effect of pre-hospital emergency airway nursing in patients with stroke”.Status and causes of nursing effect of pre-hospital emergency airway nursing in patients with stroke were analyzed based on PDCA operating procedures.QCC goals and improve-ment countermeasures were designed according to the 5W2H principle.Countermeasure was implemented and QCC effect was measured by

  12. 品管圈在提高造口患者自我护理能力中的应用%Application of quality control circle activities in improvement the self care ability of colostomy patients

    Institute of Scientific and Technical Information of China (English)

    卢美玲; 刘艾; 张咏梅; 陈幸幸; 何金艳; 苟晓梅; 梁小香; 邓冬雪; 李纳

    2014-01-01

    目的:探讨品管圈质量管理工具在提高造口患者自我护理能力中的应用效果。方法:选择2011年5月~2012年5月在我院胃肠外科住院的45例造口患者作为对照组,应用传统方法对造口患者进行管理;选择2012年8月~2013年8月在我院胃肠外科住院的55例造口患者作为试验组,应用品管圈质量管理工具进行管理。比较两组患者自我护理缺陷发生情况。结果:试验组造口患者自我护理缺陷发生情况低于对照组(P<0.05)。结论:合理运用品管圈质量改进工具可有效提高造口患者的自我护理能力。%Objective:To explore the QCC quality management tool in improving the function of colostomy patients self care ability. Methods:To review in May 2011 to May 2012 gastrointestinal surgery of 45 colostomy patients with the control group,normal colostomy nursing. 55 patients from August 2012 to August 2013 were experimental group,received QCC management. To compare the occur of self-care abilitydefects. Results:The implementation of QCC management method after colostomy patients self-care defects has increased significantly,the difference was statistically significant (P<0. 05). Conclu-sion:The reasonable use QCC quality improvement tools can effectively improve the self-care ability of colostomy patients.

  13. The effect of Quality Control Circle(QCC)in improving the cooperation ability of nurses in operation room%品管圈在提高手术室护士手术配合能力中的应用

    Institute of Scientific and Technical Information of China (English)

    胡敏

    2016-01-01

    Objective:To explorer effects of quality control cycle improving the cooperation ability of nurses in operation room. Methods:8 nurses in operation room of our hospital were selected to set up quality control cycle. Scores of communications between nurses and doctors, theoretic knowledge and professional skills of medical emergency were observed and compared before and after the implement of QCC. Results:After the implement of QCC, all scores of communications between nurses and doctors, theoretic knowledge and professional skills of medical emergency were higher than before, and all differences were signiifcant(P<0.05). Conclusion:The implement of QCC could effectively reinforce the theoretical knowledge of medical emergency, improve the level of professional skills, strengthen the communication between nurses and doctors, and ensure the operation to carry on successfully.%目的:探讨品管圈在提高手术室护士手术配合能力的作用效果。方法选取我院手术室的8名护士组成品管圈,比较品管圈实施前后护士在医护沟通、急救理论知识和急救操作技能的评分情况。结果实施品管圈后,护士在医护沟通、急救理论知识和急救操作技能方面的评分均高于实施前,前后比较,差异具有统计学意义(P<0.05)。结论品管圈活动可以有效夯实护士的理论知识,提高专业技能操作水平,强化医护的沟通,保证手术的顺利进行。

  14. Application of quality control circle activity in reducing the ward noise%品管圈活动在降低血液内科病区噪音中的应用

    Institute of Scientific and Technical Information of China (English)

    林莉; 阮文珍; 丁桂芳

    2014-01-01

    目的:探讨品管圈活动对降低血液内科病区噪音的应用效果。方法成立品管圈活动小组,对病区噪音因素进行分析,制定并采取相应措施。结果病区各种噪声下降率均达80%以上,其中各类车轮产生的噪音下降率达92.31%,家属大声谈话噪音与各仪器报警噪音也分别达88.24%和88.10%。结论品管圈方法的应用降低了病区噪音,患者满意度提高,护理质量提升。%Objective To investigate the QCC activities to reduce the effect of noise on the ward. Methods Formulate and adopt the measures by setting up QQC team to analyze the factors of the ward noise. Results Ward noise reduction rate was more than 80%, including all types of wheel noise reduction rate was up to 92.31%, the family talking loudly and the eachinstrument noise were respectively 88.24% and 88.10%. Conclusion The application of QQC reduces the ward’s noise, improves patient’s satisfaction and nursing quality.

  15. Convex functions and the rolling circle criterion

    OpenAIRE

    1995-01-01

    Given 0≤R1≤R2≤∞, CVG(R1,R2) denotes the class of normalized convex functions f in the unit disc U, for which ∂f(U) satisfies a Blaschke Rolling Circles Criterion with radii R1 and R2. Necessary and sufficient conditions for R1=R2, growth and distortion theorems for CVG(R1,R2) and rotation theorem for the class of convex functions of bounded type, are found.

  16. Arabia: from craters to stone circles

    CERN Document Server

    Sparavigna, Amelia Carolina

    2010-01-01

    The Arabia Shield has a volcanic nature inside. A region of the Western Saudi Arabia is in fact covered with vast fields of lava known as harraat. These lands are spotted by many stone circles and other quite interesting archaeological remains of the Neolithic period, such as the "desert kites", the hunters used to guide the game across the harrah in some corrals. With Google Maps, we can observe both sceneries, the volcanic nature of the land and a portrait of Arabia during the Neolithic times.

  17. 品管圈在降低住院药房药品损耗件数方面的应用%Application of Quality Control Circle in Reducing the Amount of Drug Wastage in Inpatient Pharmacy

    Institute of Scientific and Technical Information of China (English)

    石晓萍; 许剑安; 吴轶; 曹蕾

    2014-01-01

    Objective In order to reduce the amount of drug wastage in inpatient pharmacy, improve the quality and ef iciency of work, and promote the staf ' ability of self-controling and problem-solving. Methods The processes of planing, doing, confirming and disposaling are carried out by fol owing the ten procedures of QCC. Results The amount of drug wastage in inpatient pharmacy declined from 78.84 per month to 32 per month after carrying out QCC. Conclusion The implemention of QCC can effectively lower the amount of drug wastage. Besides, the staf 's consciousness of team cooperation and sense of responsibility are strengthened. Furthermore, the staf 's problem-solving skil s can be enhanced by QCC.%目的:应用品管圈手法降低住院药房药品损耗件数,提高工作质量和效率,提升员工的自我管理意识和解决问题的能力。方法按照品管圈的十大步骤进行计划、实施、确认和处置。结果开展品管圈活动后,住院药房药品损耗件数由活动前的78.84件/月下降到活动后的32件/月。结论开展品管圈活动能够有效降低住院药房药品损耗件数,增强员工的团队合作意识及责任心,提升员工解决问题的能力。

  18. 品管圈对提高多重耐药菌管理总结分析率的效果%Effect of Quality Control Circle on Improving the Management of Multi Drug Resistant Bacteria

    Institute of Scientific and Technical Information of China (English)

    曹兰芳; 刘萍; 石晓院; 余彩娥; 邹楠茜

    2015-01-01

    Objective Analysis of the establishment ofmultidrugresistantbacteriabeforeandafter the Departmentofqualitycontrol cir-cleof multi drug resistant strainsofchange management。Methods During the period of 2-10 months of 2014,In our hospital by the multi sectoral, multidisciplinary establishment of multi drug resistant bacteria QCC,Department of management of multi drug resis-tant bacteria were analyzed supervision and management,Compared with those in the establishment of QCC before 2014 January,Observation of sections of the multi drug resistant bacteria of change management. Results The QCC activities before and after the Department of management summary of theanalysis of multi drug resistant bacteria increased from 2014 to January rose from 7.6%in 2014 to 92.4% in October. Conclusion Multi sectoral joint QCC activities can improve the cognition of multi drug resistant bacteriain medical staff,To further implement the measures,To improve the management of multiple drug-resistant rate,To ensure the safety of patients,To improve the quality of medical care,It is worth in clinical promotion.%目的:分析成立多重耐药菌品管圈前后科室对多重耐药菌管理总结分析的变化。方法2014年2~10月期间,该院由多部门、多学科组成成立多重耐药菌品管圈,对科室多重耐药菌管理总结分析进行监督管理,与未成立品管圈活动前的2014年1月比较,观察科室对多重耐药菌管理总结分析的变化。结果品管圈活动开展前后科室对多重耐药菌管理总结的分析率由2014年1月的7.6%上升至2014年10月的92.4%。结论多部门联合开展品管圈活动能提高医务人员对多重耐药菌的认知,措施得到进一步落实,提高对多重耐药菌管理总结分析率,保障患者安全,提高医疗质量,值得在临床推广。

  19. A mechanism for ramified rolling circle amplification

    Directory of Open Access Journals (Sweden)

    Smith James H

    2010-12-01

    Full Text Available Abstract Background Amplification of single-stranded DNA circles has wide utility for a variety of applications. The two-primer ramified rolling circle amplification (RAM reaction provides exponential DNA amplification under isothermal conditions, creating a regular laddered series of double-stranded DNA products. However, the molecular mechanism of the RAM reaction remains unexplained. Results A RAM reaction model predicts exponential accumulation of a double-stranded DNA product size series, and product-size ratios, that are consistent with observed RAM reaction products. The mechanism involves generation of a series of increasing size intermediate templates; those templates produce RAM products and recursively generate smaller intermediate templates. The model allows prediction of the number of rounds of circular template replication. Real-time RAM reaction data are consistent with the model. Analysis of RAM reaction products shows exponential growth limitation consistent with the model's predictions. Conclusions The model provides a rationale for the observed products of the RAM reaction, and the molecular yield among those products. Experimental results are consistent with the model.

  20. Estimation of pure qubits on circles

    CERN Document Server

    Braunstein, S L; Severini, S; Braunstein, Samuel L.; Ghosh, Sibasish; Severini, Simone

    2004-01-01

    Gisin and Popescu [PRL, 83, 432 (1999)] have shown that more information about their direction can be obtained from a pair of anti-parallel spins compared to a pair of parallel spins, where the first member of the pair (which we call the pointer member) can point equally along any direction in the Bloch sphere. They argued that this was due to the difference in dimensionality spanned by these two alphabets of states. Here we consider similar alphabets, but with the first spin restricted to a fixed small circle of the Bloch sphere. In this case, the dimensionality spanned by the anti-parallel versus parallel alphabet is now equal. However, the anti-parallel alphabet is found to still contain more information in general. We generalize this to having N parallel spins and M anti-parallel spins. When the pointer member is restricted to a small circle these alphabets again span spaces of equal dimension, yet in general, more directional information can be found for sets with smaller |N-M| for any fixed total number...

  1. 品管圈活动在神经外科护理科研中的应用效果%Application effects of quality control circle ( QCC) in neurosurgery nursing scientific research

    Institute of Scientific and Technical Information of China (English)

    葛东明; 丁涟沭; 王正梅; 王爱凤; 郭正会

    2016-01-01

    writing level of thesis, so as to improve the quality of care in our department.

  2. Effect of quality control circle to reduce intraoperative hypothermia during transurethral resection or prostate for elderly patients%品管圈活动降低经尿道前列腺电切术老年患者术中低体温的效果

    Institute of Scientific and Technical Information of China (English)

    陈艳; 张悦; 陆朝蓉; 黄平

    2014-01-01

    Objective To explore the effect of quality control circle ( QCC) to prevent intraoperative hypothermia during transurethral resection or prostate ( TURP) of aging patients .Methods We founded QCC team, utilized PDCA, and established ‘To prevent Intraoperative hypothermia during TURP of elderly patients ’ as a theme.Elderly, who met the sampling criteria and implement of TURP from January to October 2013 were assigned, for stock taking, setting goals, analyzing the causes, implementing rectification measures and evaluating the effect .Results Through the QCC , the rates of intraoperative hypothermia ,chills and postoperative agitation (14.3%,13.4%and 8.9%) were significant differences before QCC carried out (41.6%,30.9%and 21.4%) (χ2 =18.694,12.311,6.125,respectively;P<0.05).Each member of QCC was improved in the use of QCC, teamwork, expertise, relationships, the power of executive and the ability to resolve problems . Conclusions To carry out the quality control circle activity in elderly patients with TURP can effectively reduce the intraoperative hypothermia occurs , reduce intraoperative shivering and agitation and other complications , and improve the ability of team members to use QCC problem .%目的:探讨品管圈活动在降低高龄患者前列腺电切术( TURP)中低体温的应用效果。方法成立品管圈活动小组,运用PDCA循环方法,确立“降低高龄患者TURP术中低体温”为活动主题,对2013年1—10月112例行TURP的高龄患者进行现状调查、分析原因、设定目标,制定对策并落实整改措施,进行相关评价。结果通过品管圈活动的良性干预,高龄患者术中低体温、术中寒颤及躁动的发生率分别为14.3%,13.4%,8.92%,均较活动前下降,差异有统计学意义(χ2值分别为18.694,12.311,6.125;P <0.05)。结论开展品管圈活动能有效降低高龄患者TURP术中低体温的发生,减少术中寒颤及躁动

  3. Effect of Quality Control Circle Activity on Reducing Central Venous Catheter Infection Rate in Hemodialysis Patients%品管圈活动在降低血液透析患者中心静脉置管感染率中的效果观察

    Institute of Scientific and Technical Information of China (English)

    郑海兰; 张锦玉

    2016-01-01

    目的:探究品管圈活动在降低血液透析患者中心静脉置管感染率中的效果。方法分析吉林省延边大学附属医院(延边医院)血液透析使用中心静脉置管的患者实施品管圈活动前后中心静脉置管感染率。结果品管圈活动后中心静脉置管感染发生率为3.54%,低于活动前的10.61%(P<0.05)。结论通过品管圈活动分析中心静脉置管感染的主要原因并进行针对性改善,可降低导管感染率。%ObjectiveTo explore the effect of the quality control circle activity in reducing the rate of central venous catheter infection in hemodialysis patients. Methods We analyzed the infection rate of central venous catheter before and after hemodialysis in patients with hemodialysis using central venous catheter in the affiliated hospital of yanbian university.Results The incidence of central venous catheter infection was 3.54%,which was significantly lower than that of the 10.61% before the activity. Conclusion Through the analysis of the main causes of the central venous catheter infection and targeted improvement,the catheter infection rate can be reduced.

  4. 品管圈活动在降低心内科住院患者护理标识错误率中的应用%Application of Quality Control Circle Activity in Reducing the Error Rate of Patients' Nursing Marks in Cardiology Department

    Institute of Scientific and Technical Information of China (English)

    叶晶; 方晋; 郁莉芬

    2015-01-01

    目的探讨品管圈管理工具在降低心内科住院患者护理标识错误率中的应用效果。方法成立品管圈,按照品管圈活动步骤,运用质量管理常用工具对心内科住院患者护理标识存在的问题进行改进,并将改进前、后状况进行比较。结果实施品管圈活动后,心内科住院患者护理标识错误率由15.17%下降至5.23%,差异有统计学意义(<0.001)。结论品管圈活动可有效降低心内科住院患者护理标识错误率,提高圈员运用品管工具解决临床实际问题的能力。%Objective To investigate the ef ect of the Quality Control Circle activity in reducing the er or rate of patient' nursing marks in the Department of Cardiology. Methods We set up the QCC Group. In accordance with the steps of QCC, we did quality improvements focus on the existing problems of patient' nursing marks in the Department of Cardiology by using quality management tools. Then compare the results before and after improvement measures. Results After the QCC activity, the er or rate of patient' nursing marks in the Department of Cardiology decreased from 15.17% to 5.23%and the dif erence was statistical y significant ( <0.001). Conclusion QCC activity could ef ectively reduce the er or rate of patient' nursing marks in the Department of Cardiology and improve the ability of members of QCC Group to solve clinical nursing problems.

  5. 品管圈活动在恢复精神科康复患者社会功能中的应用效果分析%Analysis of the application effect of quality control circle activity on the rehabilita-tion of social function of the patients with psychiatric

    Institute of Scientific and Technical Information of China (English)

    杨惠青

    2016-01-01

    Objective To analyze the application effect of quality control circle activity on the rehabilitation of the patients with psychiatric. Methods A total of 80 cases of patients with psychiatric at the course of recuperation trea-ted in psychiatry department of our hospital from February 2014 to February 2015 were selected as the study objects and were divided into the observation group and the control group according to the random digital table method, 40 cases in each group. The control group were given routine nursing, while the observation group were treated with quality control circle activity on the basis of routine nursing care. The scale of social function for psychosis in patients ( SSFPI) , self-rating anxiety scale ( SAS) , and self-rating depression scale ( SDS) were used to evaluate the social function and mental status of patients of the two groups before and after nursing, and the scale for assessment of negative symptoms ( SANS) was used to evaluate the improvement of psychiatric and pathological symptoms of patients of the two groups. Results The scores of anxiety and depression, the positive and negative symptom scores of the patients of the two groups after nursing were decreased, and the mental status and the psychiatric symptoms of the patients were improved, of which the improvement of the observation group were more significant ( P<0. 05 ) . The scores of social function of patients of the two groups were improved after nursing, and the improvement of the observation group was significantly higher than that of the control group ( P<0. 05 ) . Conclusion Quality control circle activity can effectively improve the psychiatric and pathological symptoms, social function and mental status of the patients with psychiatric at the course of recupera-tion.%目的:分析品管圈活动在恢复精神科康复患者社会功能中的应用效果。方法抽取80例本院精神科2014年2月至2015年2月期间接收的精神疾病康复期患者作为研

  6. Neurodynamics in Randomly Coupled Circle Maps

    Science.gov (United States)

    Matsuno, Tetsuya; Toko, Kiyoshi; Yamafuji, Kaoru

    1996-05-01

    The dynamics of retrieval processes in a system composed of coupled circle maps is studied by means of a statistical method and numerical simulations. Phase patterns are embedded in coupling parameters so that the system may work as an associative memory system. A parameter, which is an amplification factor multiplied to all the coupling strengths, is introduced for investigating the effect of the strength of the coupling nonlinearity on the behavior of the system concerned. The statistical method provides a set of time evolution equations representing the macroscopic behavior. It is found that the storage capacity is considerably enhanced by the introduced amplification factor. It is also shown that the system exhibits macroscopic chaotic oscillations when the strength of the coupling is sufficiently large. Moreover, the clustering is observed, as in other types of the globally coupled nonlinear systems.

  7. Controlled Microwave Heating Accelerates Rolling Circle Amplification.

    Science.gov (United States)

    Yoshimura, Takeo; Suzuki, Takamasa; Mineki, Shigeru; Ohuchi, Shokichi

    2015-01-01

    Rolling circle amplification (RCA) generates single-stranded DNAs or RNA, and the diverse applications of this isothermal technique range from the sensitive detection of nucleic acids to analysis of single nucleotide polymorphisms. Microwave chemistry is widely applied to increase reaction rate as well as product yield and purity. The objectives of the present research were to apply microwave heating to RCA and indicate factors that contribute to the microwave selective heating effect. The microwave reaction temperature was strictly controlled using a microwave applicator optimized for enzymatic-scale reactions. Here, we showed that microwave-assisted RCA reactions catalyzed by either of the four thermostable DNA polymerases were accelerated over 4-folds compared with conventional RCA. Furthermore, the temperatures of the individual buffer components were specifically influenced by microwave heating. We concluded that microwave heating accelerated isothermal RCA of DNA because of the differential heating mechanisms of microwaves on the temperatures of reaction components, although the overall reaction temperatures were the same.

  8. Fast transport optimization on the circle

    CERN Document Server

    Delon, Julie; Sobolevskii, Andrei

    2009-01-01

    Consider the problem of optimally matching two measures on the circle, or equivalently two periodic measures on the real line, and suppose the cost of matching two points satisfies the Monge condition. We introduce a notion of locally optimal transport plan, motivated by the weak KAM (Aubry-Mather) theory, and show that all locally optimal transport plans are conjugate to shifts. This theory is applied to a transportation problem arising in image processing: for two sets of point masses, both of which have the same total mass, find an optimal transport plan with respect to a given cost function that satisfies the Monge condition. For the case of N real-valued point masses we present an O(N log epsilon) algorithm that approximates the optimal cost within epsilon; when all masses are integer multiples of 1/M, the algorithm gives an exact solution in O(N log M) operations.

  9. 品管圈活动对减少住院患儿家属反复询问病情及改善护士烦躁、倦怠情绪的影响%The practicing effect of quality control circle activity in reducing repeated inquiry for hospitalized children's symptoms by their families and improving the nurses' ir-ritability and emotional burnout

    Institute of Scientific and Technical Information of China (English)

    陈琼; 卢贤秀; 黎艳超; 李亚洁

    2016-01-01

    Objective To explore the clinical application value of quality control circle activity in reducing the frequency of inquiring symptoms by families of hospitalized children and improving the nurses' irritability and emotional burnout. Methods A total of 126 cases of hospitalized children and a lineal accompanying family members of each hos-pitalized children were selected as the research objects who were divided into the research group (group A, n=66) and the control group (group B, n=60) according to the implementation time of quality control circle activity (July 2014) in inpatient ward of department of pediatrics. The children in group B were given routine nursing and group A adopted the quality control circle activity intervention measures. The frequency of repeated inquiry for symptoms by families of hospitalized children and unhealthy mood score were compared between the two groups. The scores of nursing quality and anxiety of the nurses during the children's hospitalization were recorded. The differences in terms of nursing satisfactory degree, nursing complaint rate and the incidence rate of job burnout syndrome ( Burnout syndrome ) were analyzed. Results ①The frequency of repeated inquiry for children ' s symptoms by families of hospitalized children of group A was significantly lower than that of group B (P<0. 05) . The scores of HAMD, HAMA and other unhealthy emotions of families of hospitalized children of group B were significantly higher than that of group A ( P<0. 05 ); ②After the im-plementation of quality control circle activity, the nursing quality scores of 18 tested nurses were significantly higher than that before the implementation, while MSSNS score and the incidence rate of Burnout syndrome were significantly lower than that before the implementation ( P<0. 05 ); ③After the implementation of the quality control circle activity, the nursing satisfactory degree was 90. 9% , which was significantly higher than 81. 7% before the

  10. D'Nealian Handwriting versus Circle-Stick Print.

    Science.gov (United States)

    Thurber, Donald N.

    This paper argues against teaching children to make letters using circle-stick writing. It contends that the circle-stick method requires continued pen/pencil lifts hindering rhythm or flow in the writing process and that there is little carry-over value into cursive writing as the two scripts are totally different. D'Nealian print, one type of…

  11. The Vienna circles: cultivating economic knowledge outside academia

    NARCIS (Netherlands)

    E. Dekker (Erwin)

    2014-01-01

    markdownabstract__Abstract__ This article examines the intellectual scenery of interwar Vienna. It argues that its central institution was not academia, but rather the circles (‘Kreise’). The prominence of these circles can partly account for the creative outburst in the social sciences in interwar

  12. Integrating Literature Circles into a Cotaught Inclusive Classroom

    Science.gov (United States)

    Whittaker, Catharine R.

    2012-01-01

    Literature circles or book clubs are small, heterogeneous groups of students who have chosen to read and discuss the same book together. The research on literature circles suggests that they hold great promise for increasing students' enjoyment of reading and honing their literacy skills. When evidence-based strategies are embedded into a…

  13. Locating a circle on the plane using the minimax criterion

    DEFF Research Database (Denmark)

    Brimberg, Jack; Juel, Henrik; Schöbel, Anita

    2009-01-01

    We consider the problem of locating a circle with respect to existing facilities on the plane, such that the largest weighted distance between the circumference of the circle and the facilities is minimized. The problem properties are analyzed, and a solution procedure proposed...

  14. Geometric fit of a point set by generalized circles

    DEFF Research Database (Denmark)

    Körner, Mark-Christopher; Brimberg, Jack; Juel, Henrik;

    2010-01-01

    In our paper we approximate a set of given points by a general circle. More precisely, given two norms k 1 and k 2 and a set of points in the plane, we consider the problem of locating and scaling the unit circle of norm k 1 such that the sum of weighted distances between the circumference of the...

  15. Locating a general minisum 'circle' on a plane

    DEFF Research Database (Denmark)

    Brimberg, Jack; Juel, Henrik; Körner, Mark-Christoph

    2011-01-01

    We approximate a set of given points in the plane by the boundary of a convex and symmetric set which is the unit circle of some norm. This generalizes previous work on the subject which considers Euclidean circles only. More precisely, we examine the problem of locating and scaling the unit circ...

  16. DNA circles with cruciforms from Isospora (Toxoplasma) gondii

    NARCIS (Netherlands)

    Weijers, P.J.; Borst, P.; Overdulve, J.P.; Fase-Fowler, F.; Berg, Marlene van den

    1984-01-01

    We have isolated a closed circular duplex DNA fraction from the unicellular parasite Isospora (Toxoplasma) gondii and examined the purified DNA by electron microscopy. A major part of this circular DNA consists of 12-μm circles containing a cruciform with 0.5-μm tails. We also found 23-μm circles wi

  17. Locating a circle on the plane using the minimax criterion

    DEFF Research Database (Denmark)

    Brimberg, Jack; Juel, Henrik; Schöbel, Anita

    2009-01-01

    We consider the problem of locating a circle with respect to existing facilities on the plane, such that the largest weighted distance between the circumference of the circle and the facilities is minimized. The problem properties are analyzed, and a solution procedure proposed...

  18. Quality Control Circle Activity in Reducing the Nasal Skin Damage Rate of Patients with In-dwelling Gastric Tube%品管圈活动降低留置胃管患者的鼻部皮肤受损率

    Institute of Scientific and Technical Information of China (English)

    倪逸倩; 张伟英; 姜春叶

    2016-01-01

    目的:探讨品管圈活动降低留置胃管患者鼻部皮肤受损率的效果.方法2013年8-10月,应用品管圈活动的十大步骤,查找分析留置胃管患者鼻部皮肤受损的原因,制定相应对策并实施.结果实行品管圈活动后,留置胃管患者鼻部皮肤受损率由33.33%下降至8.33%,小组成员在责任心、自信心、积极性、解决问题的能力、沟通协作的能力、团队合作的能力和品管圈手法掌握程度等方面均有明显提高.结论品管圈活动在降低留置胃管患者鼻部皮肤受损率的实践中效果显著,还使得团队合作的能力和解决问题的能力有所提高.%Objective To investigate the effect of quality control circle (QCC)activities in reducing the nasal skin damage rate of patients with indwelling stomach tube.Methods By using the ten steps of QCC activities to find the reason for the nasal skin damage of patients,and make corresponding countermeas-ures.Results After the implementation of QCC activities,the nasal skin damage rate reduced from 33.33%to 8.33%,the responsibility,self-confidence,initiative,problem solving ability,communication and coopera-tion ability,team cooperation ability and quality control technique master degree in team members were all significantly improved.Conclusion QCC activities had significant effect in reducing nasal skin damage rate of patients with indwelling stomach tube,and improving team cooperation ability and problem solving ability.

  19. 品管圈活动在降低血液透析中补铁所致的透析机空气报警率中的应用%Effect of quality control circle program in decreasing hemodialysis machine air alarm rate because of intravenous iron administration

    Institute of Scientific and Technical Information of China (English)

    李月娥; 赖丽梅; 唐淑杏

    2014-01-01

    目的:探讨品管圈活动在降低血液透析补铁所致的透析机空气报警中的应用,以提高血液透析病人蔗糖铁使用的安全性,保证病人血液透析的顺利进行。方法:由血液净化中心8名医护人员自愿组建品管圈,选定降低血液透析中补铁所致的透析机空气报警率为活动主题,总结分析透析过程中静脉点滴蔗糖铁所致的透析机空气报警原因,同时制定和实施相应的护理对策。结果:应用品管圈活动后,静脉点滴蔗糖铁所致的空气报警率较活动前明显降低,差异有统计学意义(P<0.05)。结论:开展品管圈活动,降低了血液透析中静脉点滴蔗糖铁所致的透析机空气报警次数,提高了圈员的团队精神和质量管理能力。%Objective:To observe the effect of quality control circle ( QCC) program in decreasing the rate of hemodialysis machine air alarm because of in-travenous iron administration during hemodialysis,in order to improve the safety of using iron sucrose and ensure hemodialysis smoothly. Methods:QCC was established by 8 medical personnel voluntarily,and the theme of this program was decreased the rate of hemodialysis machine air alarm. Observed the rate of hemodialysis machine air alarm before this program,and then analyzing its reason. At the same time,the corresponding nursing countermeasures were formu-lated and implemented. Results:The rate of hemodialysis machine air alarm exceeded the targets obviously after implementing QCC was lower than before, the was remarkable different (P<0. 05). Conclusion:QCC program can not only decrease the rate of hemodialysis machine air alarm,but also improve the team spirit and the ability of quality management.

  20. Quality Circles: Determination of Significant Factors for Success an a General Model for Implementing a Quality Circle Process.

    Science.gov (United States)

    1981-06-01

    Virgil R. Rehg, Dr John W. Demidovich , Major Russ Lloyd, and Major Thomas Harrington, our thesis committee, proved their devotion to and care for...Dr John W. Demidovich , Professor of Management, U.S. Air Force Institute of Technology, April 28, 1981. 17. Curhan, Franklin. Personal telephone...University Review, July-August 1970, 21, pp 42-50o 20. Demidovich , John W. "The Crawford Slip Method, "Third Annual IAQC Conference, Louisville

  1. Androgen circle of polycystic ovary syndrome.

    Science.gov (United States)

    Homburg, Roy

    2009-07-01

    Although the aetiology of polycystic ovary syndrome (PCOS) is still not known and the search for causative genes is proving elusive, it is generally agreed that hyperandrogenism is at the heart of the syndrome. Here, it is proposed that excess androgens are the root cause of PCOS starting from their influence on the female fetus in programming gene expression, producing the characteristic signs and symptoms which are then exacerbated by a propagation of excess ovarian androgen production from multiple small follicles, anovulation and insulin resistance in the reproductive life-span, thus setting up a vicious perpetual circle of androgen excess. This opinion paper, rather than being a full-scale review, is intentionally biased in support of this hypothesis that androgen excess is the 'root of all evil' in PCOS; in the hope that its acceptance could lead to more direct treatment of the syndrome in all its facets rather than the symptomatic treatment of side effects of androgen excess that we are addressing today.

  2. Inhomogeneous field theory inside the arctic circle

    Science.gov (United States)

    Allegra, Nicolas; Dubail, Jérôme; Stéphan, Jean-Marie; Viti, Jacopo

    2016-05-01

    Motivated by quantum quenches in spin chains, a one-dimensional toy-model of fermionic particles evolving in imaginary-time from a domain-wall initial state is solved. The main interest of this toy-model is that it exhibits the arctic circle phenomenon, namely a spatial phase separation between a critically fluctuating region and a frozen region. Large-scale correlations inside the critical region are expressed in terms of correlators in a (euclidean) two-dimensional massless Dirac field theory. It is observed that this theory is inhomogenous: the metric is position-dependent, so it is in fact a Dirac theory in curved space. The technique used to solve the toy-model is then extended to deal with the transfer matrices of other models: dimers on the honeycomb and square lattice, and the six-vertex model at the free fermion point (Δ =0 ). In all cases, explicit expressions are given for the long-range correlations in the critical region, as well as for the underlying Dirac action. Although the setup developed here is heavily based on fermionic observables, the results can be translated into the language of height configurations and of the gaussian free field, via bosonization. Correlations close to the phase boundary and the generic appearance of Airy processes in all these models are also briefly revisited in the appendix.

  3. Controlled Microwave Heating Accelerates Rolling Circle Amplification.

    Directory of Open Access Journals (Sweden)

    Takeo Yoshimura

    Full Text Available Rolling circle amplification (RCA generates single-stranded DNAs or RNA, and the diverse applications of this isothermal technique range from the sensitive detection of nucleic acids to analysis of single nucleotide polymorphisms. Microwave chemistry is widely applied to increase reaction rate as well as product yield and purity. The objectives of the present research were to apply microwave heating to RCA and indicate factors that contribute to the microwave selective heating effect. The microwave reaction temperature was strictly controlled using a microwave applicator optimized for enzymatic-scale reactions. Here, we showed that microwave-assisted RCA reactions catalyzed by either of the four thermostable DNA polymerases were accelerated over 4-folds compared with conventional RCA. Furthermore, the temperatures of the individual buffer components were specifically influenced by microwave heating. We concluded that microwave heating accelerated isothermal RCA of DNA because of the differential heating mechanisms of microwaves on the temperatures of reaction components, although the overall reaction temperatures were the same.

  4. Geršgorin and his circles

    CERN Document Server

    Varga, Richard S

    2004-01-01

    TheGer? sgorin CircleTheorem, averywell-known resultin linear algebra today, stems from the paper of S. Ger? sgorin in 1931 (which is reproduced in AppendixD)where,givenanarbitraryn×ncomplexmatrix,easyarithmetic operationsontheentriesofthematrixproducendisks,inthecomplexplane, whose union contains all eigenvalues of the given matrix. The beauty and simplicity of Ger? sgorin’s Theorem has undoubtedly inspired further research in this area, resulting in hundreds of papers in which the name “Ger? sgorin” appears. The goal of this book is to give a careful and up-to-date treatment of various aspects of this topic. The author ?rst learned of Ger? sgorin’s results from friendly conversations with Olga Taussky-Todd and John Todd, which inspired me to work in this area.Olgawasclearlypassionateaboutlinearalgebraandmatrixtheory,and her path-?nding results in these areas were like a magnet to many, including this author! It is the author’s hope that the results, presented here on topics related to Ger? sgorin...

  5. Design and Calculation of the Resistance Circles for Wooden Barrels

    Directory of Open Access Journals (Sweden)

    Adriana FOTIN

    2011-03-01

    Full Text Available The aim of this paper is to present a design methodology for the circles of wooden barrels, usingappropriate strength calculations, so as to provide tightness while maintaining the integrity of the woodenmaterial embedded in the barrel structure, in the jacket and bottom staves, respectively.Based on these calculations, the circle dimensions (length, width and thickness can be defined,depending on the barrel type (for transport or storage and their relation to the barrel bottoms.Defining the dimensional characteristics of the circles is mandatory, as these are safety elements in thebarrel operation.

  6. Yang-Lee Circle Theorem for an Antiferromagnetic Heisenberg Ladder

    Institute of Scientific and Technical Information of China (English)

    王先智

    2001-01-01

    The Yang-Lee zeros of an antiferromagnetic Heisenberg ladder model are determined. It is found that if J4≤0 Yang-Lee zeros are located on the unit circle and on the negative real axis in the complex activity plane. In particular, if J4≤0 and 2J2≥J4, Yang-Lee zeros are located on the unit circle and the Yang-Lee circle theorem is valid. If J4 > 0, Yang-Lee zeros are located on some complicated curves.

  7. 应用品管圈减少护士来回于护理站与病房的途中耗时%The effect of Quality Control Circle on reducing nurses' time-consuming walking to and fro between the nursing station and ward

    Institute of Scientific and Technical Information of China (English)

    王惠琴

    2013-01-01

    Objective:To explore the effect of Quality Control Circle (QCC) on reducing nurses' time-consuming walking to and fro between nursing station and ward.Methods:Based on QCC activity,we established two nursing sub-stations at the shortest redius,modified the nursing workflow,optimized nursing staff,and configured the appliances of nursing sub-station.Results:The daily time-consuming of nurses saved 316.3 minutes.The rate of reaching the standard was 107.6% and the progress rate was 66.3%.The patients' satisfaction increased from 92.0% to 99.6%.The nurses' satisfaction increased from 90.0% to 95.4%.Conclusions:The establishment of nursing sub-station,optimization of processes and configuration could improve working efficiency,reduce nurses' invalid time-consuming and labor-consuming,and give the time back to the nurses and the nurse back to patients.%目的:探讨品管圈活动对护士来回于护理站与病房的途中耗时的影响.方法:通过品管圈活动,在两个最短护理半径处设立二级护理站,配置二级护理站用具,改进病区工作流程,优化护理人员分工.结果:责任护士每日途中耗时节约了316.3min,达标率达107.6%,进步率达66.3%;患者满意度从92.0%提高到99.6%,护士满意度从90.0%提高到95.4%.结论:建立二级护理站、优化工作流程和人员配置等方式,提高了工作效率,减少了护士无效的耗时和耗力,真正把时间还给了护士,把护士还给了患者.

  8. 品管圈在提高骨科围术期Ⅰ类切口抗菌药物使用正确率中的应用%Application of quality control circle on improvement on antimicrobial use correct rate treated type I incision during perioperative orthopedics

    Institute of Scientific and Technical Information of China (English)

    蒲兴翠; 宁宁; 宋跃明; 李玲利; 安晶晶; 刘欢; 陈佳丽

    2015-01-01

    Objective To apply quality control circle ( QCC) to improve antimicrobial use correct rate treated type I incision during perioperative orthopedic. Methods The QCC group was established to grasp the current status of antimicrobial use correct rate for type I incision, set goals, analyze major factors, and form and implement countermeasures. Results The unreasonable use incidences of antimicrobial agents were decreased from 69 to 22 cases with a progress of 70%, and improved the nurse′s ability of finding and solving problems and the ability of team cooperation after conducting QCC activities. Conclusions QCC activities plays a positive role in management of orthopedic perioperative antimicrobial use, and ensures the safety of clinical application and cure rates, prevents the incision infection and postoperative nosocomial infection, increases the operation safety, and reduces the drug resistant strains.%目的:应用品管圈活动提高骨科围术期Ⅰ类切口抗菌药物使用正确率。方法成立品管圈小组,针对骨科围术期Ⅰ类切口抗菌药物使用的现况,运用品管圈手法进行现状把握、目标设定、要因分析、对策拟定并实施成立品管圈。结果实施品管圈后,围术期Ⅰ类切口抗菌药物不合理使用从69例降至22例,进步率为70%,有效提高了骨科围术期抗菌药物使用正确率;提升了护理人员发现问题、解决问题的能力与团队协作能力。结论推行品管圈活动,提高了骨科围术期Ⅰ类切口预防性使用抗菌药物的正确率,确保临床用药安全有效,对预防手术切口感染、增加手术安全性、预防术后医院感染和减少产生耐药菌株、提高治愈率有积极的作用。

  9. The Euler Line and Nine-Point-Circle Theorems.

    Science.gov (United States)

    Eccles, Frank M.

    1999-01-01

    Introduces the Euler line theorem and the nine-point-circle theorem which emphasize transformations and the power of functions in a geometric concept. Presents definitions and proofs of theorems. (ASK)

  10. Circle of Life——Symbolism in The Winter's Tale

    Institute of Scientific and Technical Information of China (English)

    李潇雨

    2007-01-01

    This essay tries to illustrate Winter's Tale's symbolic meaning about human life.It draws conclusion that Shakespeare's plan is to combine the natural rule of seasonal cycle with the life circle of human world.

  11. Bounded Gain of Energy on the Breathing Circle Billiard

    CERN Document Server

    Oliffson-Kamphorst, S; Kamphorst, Sylvie Oliffson; Carvalho, Sonia Pinto de

    1998-01-01

    The Breathing Circle is a 2-dimensional generalization of the Fermi Accelerator. It is shown that the billiard map associated to this model has invariant curves in phase space, implying that any particle will have bounded gain of energy.

  12. Optimal impulsive ellipse-to-circle coplanar rendezvous

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    The problem of ellipse-to-circle coplanar rendezvous with chaser spacecraft in low eccentricity was investigated in this paper.With reference frame established in the centroid of the target spacecraft,the process of ellipse-to-circle coplanar rendezvous was described by the relative equations based on cy-lindrical reference frame,and then the solutions and distributions of optimal rendezvous models of a kind of close ellipse-to-circle coplanar rendezvous were provided.The simulation results showed that the guidance law based on the optimal rendezvous model in this research has good performance,and that the distributions of optimal rendezvous models of ellipse-to-circle coplanar rendezvous with the chaser spacecraft in low eccentricity are similar,albeit with slight difference,to those of rendezvous between close circular orbits.The work in this paper is a useful extension to Prussing’s optimal ren-dezvous theory between close circular orbits.

  13. The Blaschke conjecture and great circle fibrations of spheres

    OpenAIRE

    2001-01-01

    We construct an explicit diffeomorphism taking any fibration of a sphere by great circles into the Hopf fibration, using elementary geometry--indeed the diffeomorphism is a local (differential) invariant, algebraic in derivatives.

  14. Parhelic-like circle from light scattering in Plateau borders

    Energy Technology Data Exchange (ETDEWEB)

    Tufaile, A., E-mail: tufaile@usp.br; Tufaile, A.P.B.

    2015-03-06

    We are reporting a new simple optical element to generate halos. We have observed interesting patterns of light scattering in Plateau borders in foams. In analogy to the atmospheric phenomena known as parhelic circle, sun dogs, and sun pillars, we have named the features of the patterns observed as parlaseric circle, laser dogs, and laser pillars. The triangular symmetry of the Plateau borders is analogous to the hexagonal symmetry of ice crystals which produce these atmospheric phenomena. Working with one Plateau border at a time, we have observed wave optics phenomena that are not perceived in the atmospheric phenomena, such as diffraction and interference. - Highlights: • We obtained halo formation from light scattering in a Plateau border using an experiment. • We explained halo formation using geometrical theory of diffraction. • An optical element based on a Plateau border is proposed. • We compared some aspects of the parhelic circle with the parlaseric circle.

  15. Empirical Evaluation of Different Feature Representations for Social Circles Detection

    Science.gov (United States)

    2015-06-16

    Kaggle competition on learning social circles in networks [5]. The data consist of hand- labelled friendship egonets from Facebook and a set of 57...study and compare the performance on the available labelled Facebook data from the Kaggle competition on learning social circles in networks. We...from both structural egonet information and user profile features. We study and compare the performance on the available labelled Facebook data from

  16. Biology coming full circle: joining the whole and the parts.

    Science.gov (United States)

    Wikswo, John P; Porter, Andrew P

    2015-01-01

    The new cover of Experimental Biology and Medicine features the hermeneutic circle of biology, a concept we have adapted from the hermeneutic principle that one understands the whole only in terms of each part and the parts only in terms of the whole. Our hermeneutic circle summarizes the course of experimental biology through 2500 years of the achievements of reductionist research (understanding the parts), which culminates in our ability to rapidly sequence the genome. Rather than returning along the same path in a constructionist approach that simply builds upon this knowledge, but in reverse, an alternative is to close the circle with synthetic constructions that seek to integrate the full complexity of biological and physiological systems (understanding the whole), of which organs-on-chips are one example. This closing of the circle cannot be a comprehensively accurate representation of biology, but it can be a synthetic one that effectively defines particular biological subsystems. The illustration of the hermeneutic circle of biology is also intended to suggest both the multiple cycles that may be required to reach such a synthesis and the expansion of the circle in an outward spiral as knowledge increases. Our commentary explains the symbolism of the new cover in a philosophical and scientific discussion.

  17. Investigating the Use of Circle in Gear Cutting as a Substitute to Involute Profile

    Directory of Open Access Journals (Sweden)

    A.D. Kibet

    2012-05-01

    Full Text Available Gears are used in various machines and industries for transportation and transmission of power. Other uses are in consumer electronics and many machines used in homes like the washing machines, electric drills and kitchen appliances. Gears come in different sizes ranging from a module of 0.5 to 100 mm. Currently there is a problem of accurately machining gears. This is due to inaccurate positioning of the blank and cutter. The objective of the study was to investigate and determine the appropriate way of producing quality and accurate gears most economically through the use of a circle as a substitute to involute profile in gear cutting. Two different gears of same dimensional characteristics were cut; one using a Computer Numerical Control machine utilizing circle profile and the other using conventional milling machine. Dimensional comparisons were made of the two cut gears against an actual involute profile to determine the margin of error. The circle involute profile made using CNC was found to be exactly as the true involute profile though an error of 0.078 mm was observed in some sections of the profile. For the hobbing case, it was impossible to accurately machine the actual depth and as such, the intended depth of 7.32 was surpassed by 0.2 mm. The tooth was thicker throughout the length of the profile and the fillet radii lucked homogeneity. The involute circle approach was therefore successful and as such can benefit all CNC users and gear cutters in producing accurate gears cheaply.

  18. Three Concentric Circles: Young Chinese English Learners' Perceptions of Purposeful Audiences

    Science.gov (United States)

    Liu, Jack Jinghui

    2015-01-01

    English learners have more access to communicate with different purposeful audiences across the Three Concentric Circles of English (Kachu, 1985): the Inner Circle, the Outer Circle and the Expanding Circle. However, young language learners' purposeful audience as a focus of communication has not been emphasized as much as other linguistic…

  19. Juha Manninen and Friedrich Stadtler (eds., The Vienna Circle and the Nordic Countries. Networks and Transformations of Logical Empiricism (Vienna: Vienna Circle Institute Yearbook vol.14, Springer, 2010

    Directory of Open Access Journals (Sweden)

    Carlo Penco

    2013-03-01

    Full Text Available A discussion of The Vienna Circle and the Nordic Countries. Networks and Transformations of Logical Empiricism, edited by Juha Manninen and Friedrich Stadtler, Vienna Circle Institute Yearbook vol.14, Springer, 2010.

  20. 品管圈活动对降低留置针静脉输液静脉炎发生率的作用%The application of quality control circle on reducing the incidence of phlebitis with intravenous catheter infusion

    Institute of Scientific and Technical Information of China (English)

    张鸿儒; 姚兰; 祖利; 崔秀珍

    2014-01-01

    目的::探讨品管圈质量管理手段对降低留置针静脉输液发生静脉炎的作用效果。方法:以“降低使用留置针静脉输液静脉炎发生率”为主题,开展为期6个月的品管圈活动,总结降低住院患者使用留置针静脉输液静脉炎发生率的方法,制定出留置针静脉输液的标准化措施。结果:使用留置针静脉输液静脉炎的发生率由实施品管圈活动前24.50%降至活动后的4.00%,差异具有统计学意义(P<0.05),达到预期效果。结论:通过开展品管圈活动,有效改善了使用留置针静脉输液发生静脉炎的临床现状,提高了科室护理团队发现问题、分析问题和解决问题的能力,提高了团队的凝聚力和协助意识,创建了积极向上的科室文化氛围。%Objective:This paper aims to explore the impact of quality control circle ( QCC) to reduce the incidence of phlebitis with intravenous catheter. Methods:This unit carried out a period of six months activity with the theme"to reduce the incidence of phlebitis led by using intravenous catheter"to inves-tigate the method to reduce the patients' incidence of phlebitis led by using intravenous catheter,and develop criteria of the use of intravenous catheter infu-sion. Results:The incidence of phlebitis led by using intravenous catheter had a significant difference before and after the QCC activity (P<0. 05),reducing from 24. 50% to 4. 00%. The QCC activity achieved the desired outcome. Conclusion:The QCC improved clinical situation of the using intravenous catheter infusion leading phlebitis effectively. By this way,QCC can enhance nurse groups' abilities to identify,analyze and solve problems,improve team cohesion and awareness to help each other. At the same time,it created a positive culture atmosphere.

  1. CLASSIFICATION AND COMPUTER SIMULATION OF CONSTRUCTIVE PROBLEM IN THE PLANE GEOMETRY: METHOD OF CIRCLES

    Directory of Open Access Journals (Sweden)

    Ivan H. Lenchuk

    2014-02-01

    Full Text Available Presented article concerns construction problems in plane geometry. Solved the problem of the formation of students' stereotypes efficient, economical in time visual representation of algorithms for solving problems on the modern computer screens. Used universal author’s method of fragmented typing tasks on the method of circles. Allocated rod-type problem with its subsequent filling with ingredients. Previously developed educational software (partially, GeoGebra ensure optimal realization of the construction. Their dynamic characteristics and constructive capabilities - quality visual- shaped stages of "evidence" and "research".

  2. A small 50 K cooling device for a quarter-circle Eulerian cradle diffractometer

    Energy Technology Data Exchange (ETDEWEB)

    Zobel, D.; Luger, P. (Freie Univ. Berlin (Germany, F.R.). Inst. fuer Kristallographie)

    1990-06-01

    A one-stage He refrigerator (Displex CS1003) has been modified and installed on a quarter-circle Eulerian cradle of 250 mm diameter (AED Siemens) and has been operated down to 50 K. The mechanical interface, which can easily be mounted, is described as well as some alignment problems. The device is suitable for any Eulerian cradle 250 mm or larger. Structure redeterminations of two organic compounds were carried out at 52 K. R values of 2.2 and 3.6% were obtained and proved the quality of this set up. (orig.).

  3. Circle Detection Using an Electromagnetism-Inspired Algorithm

    Directory of Open Access Journals (Sweden)

    Cuevas E.

    2011-10-01

    Full Text Available The Physic-inspired computation is becoming popular and has been acknowledged by the scientific community. This emerging area has developed a wide range of techniques and methods for dealing with complex problems. On the other hand, automatic circle detection in digital images has been considered as an important and complex task for the computer vision community that has devoted a tremendous amount of research seeking for an optimal circle detector. This article presents an algorithm for the automatic detection of circular shapes embedded into complicated and noisy images with no consideration of the conventional Hough transform techniques. The approach is based on a nature-inspired technique called the Electromagnetism- Like Optimization (EMO which is a heuristic method following electromagnetism principles for solving complex optimization problems. For the EMO algorithm, solutions are built considering the electromagnetic attraction and repulsion among charged particles with a charge representing the fitness solution for each particle. The algorithm uses the encoding of three non-collinear points as candidate circles over an edge-only image. Guided by the values of the objective function, the set of encoded candidate circles (charged particles are evolved using the EMO algorithm so that they can fit into the actual circles on the edge map of the image. Experimental results from several tests on synthetic and natural images with a varying range of complexity are included to validate the efficiency of the proposed technique regarding accuracy, speed, and robustness.

  4. Talking Circles for Adolescent Girls in an Urban High School

    Directory of Open Access Journals (Sweden)

    Ann Schumacher

    2014-10-01

    Full Text Available Restorative Practices (RP in schools is a new and emerging field. Meeting in Circles to build friendships, develop emotional literacy skills, resolve conflict, or learn interactively are some of the core components of these programs. This article describes a 2-year study of 12 weekly Talking Circles organized under the auspices of a RP program in an urban high school with 60 adolescent girls. Primary data sources included 257 hr of participant observations in Talking Circles and individual, semi-structured interviews with 31 students. The Relational Cultural model, rooted in the work of Jean Baker Miller, served as the conceptual framework for understanding teens’ interactions within the Circle’s unique set of social conditions in a school environment. Findings demonstrated that Talking Circles provided a safe space for peers helping peers, and that the girls improved their listening, anger management, and empathic skills, which led to greater self-efficacy. It appears that Talking Circles could provide another venue for developing social-emotional literacy skills and growth-fostering relationships in schools.

  5. An efficient circle detector not relying on edge detection

    Science.gov (United States)

    Cai, Jia; Huang, Panfeng; Chen, Lu; Zhang, Bin

    2016-06-01

    Accurate and efficient detection of circular modules fixed on non-cooperative target is a key technology for Tethered Space Robot. This paper presents an efficient circle detector based on region-growing of gradient and histogram distribution of Euclidean distance. Region-growing of gradient is applied to generate arc support regions from single point. And the corresponding square fitting areas are defined to accelerate the detection and decrease storage. A histogram is then used to count frequency of the distances that participates in the accumulator and the parameters of each circle are acquired. Finally, a verification strategy of circular integrity is designed to test the detection results. We have tested our algorithm on 35 images dealing with kinds of circles and ellipses. Experimental results demonstrate that our method is able to detect circular objects under occlusion, image noises and moderate shape deformations with a good precision.

  6. A Personified Annealing Algorithm for Circles Packing Problem

    Institute of Scientific and Technical Information of China (English)

    ZHANGDe-Fu; LIXin

    2005-01-01

    Circles packing problem is an NP-hard problem and is difficult to solve. In this paper, a hybrid search strategy for circles packing problem is discussed. A way of generating new configuration is presented by simulating the moving of elastic objects, which can avoid the blindness of simulated annealing search and make iteration process converge fast. Inspired by the life experiences of people,an effective personified strategy to jump out of local minima is given. Based on the simulated annealing idea and personification strategy, an effective personified annealing algorithm for circles packing problem is developed. Numerical experiments on benchmark problem instances show that the proposed algorithm outperforms the best algorithm in the literature.

  7. Circles Disturbed The Interplay of Mathematics and Narrative

    CERN Document Server

    Doxiadis, Apostolos

    2012-01-01

    Circles Disturbed brings together important thinkers in mathematics, history, and philosophy to explore the relationship between mathematics and narrative. The book's title recalls the last words of the great Greek mathematician Archimedes before he was slain by a Roman soldier--"Don't disturb my circles"--words that seem to refer to two radically different concerns: that of the practical person living in the concrete world of reality, and that of the theoretician lost in a world of abstraction. Stories and theorems are, in a sense, the natural languages of these two worlds--stories represent

  8. Research Circles - a method for developing guidance practices

    DEFF Research Database (Denmark)

    2012-01-01

    This video reports on our work with using research circles to improve our understanding of how to provide guidance and counseling to help young people in danger of dropping out of school. The video is based on the paper: Research Circles -- a method for developing guidance practices......, and was presented at the Conference for Social Justice, Prosperity and Sustainable Employment 2012 by assistant professor Helle Merete Nordentoft from DPU (http://edu.au.dk/). The film communicating the research paper was created by Mie Nørgaard...

  9. A Phase Transition for Circle Maps and Cherry Flows

    Science.gov (United States)

    Palmisano, Liviana

    2013-07-01

    We study C 2 weakly order preserving circle maps with a flat interval. The main result of the paper is about a sharp transition from degenerate geometry to bounded geometry depending on the degree of the singularities at the boundary of the flat interval. We prove that the non-wandering set has zero Hausdorff dimension in the case of degenerate geometry and it has Hausdorff dimension strictly greater than zero in the case of bounded geometry. Our results about circle maps allow to establish a sharp phase transition in the dynamics of Cherry flows.

  10. A Phase Transition for Circle Maps and Cherry Flows

    CERN Document Server

    Palmisano, Liviana

    2012-01-01

    We study $C^{2}$ weakly order preserving circle maps with a flat interval. The main result of the paper is about a sharp transition from degenerate geometry to bounded geometry depending on the degree of the singularities at the boundary of the flat interval. We prove that the non-wandering set has zero Hausdorff dimension in the case of degenerate geometry and it has Hausdorff dimension strictly greater than zero in the case of bounded geometry. Our results about circle maps allow to establish a sharp phase transition in the dynamics of Cherry flows.

  11. Iterative-decreasing calibration method based on regional circle

    Science.gov (United States)

    Zhao, Hongyang

    2017-07-01

    In the field of computer vision, camera calibration is a hot issue. For the existing coupled problem of calculating distortion center and the distortion factor in the process of camera calibration, this paper presents an iterative-decreasing calibration method based on regional circle, uses the local area of the circle plate to calculate the distortion center coordinates by iterative declining, and then uses the distortion center to calculate the local area calibration factors. Finally, makes distortion center and the distortion factor for the global optimization. The calibration results show that the proposed method has high calibration accuracy.

  12. Secure Two-Party Point-Circle Inclusion Problem

    Institute of Scientific and Technical Information of China (English)

    Yong-Long Luo; Liu-Sheng Huang; Hong Zhong

    2007-01-01

    Privacy-preserving computational geometry is a special secure multi-party computation and has many applica-tions.Previous protocols for determining whether a point is inside a circle are not secure enough.We present a two-round protocol for computing the distance between two private points and develop a more efficient protocol for the point-circle inclusion problem based on the distance protocol.In comparison with previous solutions, our protocol not only is more secure but also reduces the number of communication rounds and the number of modular multiplications significantly.

  13. Types of the cerebral arterial circle (circle of Willis in a Sri Lankan Population

    Directory of Open Access Journals (Sweden)

    Gunasekera WSL

    2011-01-01

    Full Text Available Abstract Background The variations of the circle of Willis (CW are clinically important as patients with effective collateral circulations have a lower risk of transient ischemic attack and stroke than those with ineffective collaterals. The aim of the present cadaveric study was to investigate the anatomical variations of the CW and to compare the frequency of prevalence of the different variations with previous autopsy studies as variations in the anatomy of the CW as a whole have not been studied in the Indian subcontinent. Methods The external diameter of all the arteries forming the CW in 225 normal Sri Lankan adult cadaver brains was measured using a calibrated grid to determine the prevalence in the variation in CW. Chisquared tests and a correspondence analysis were performed to compare the relative frequencies of prevalence of anatomical variations in the CW across 6 studies of diverse ethnic populations. Results We report 15 types of variations of CW out of 22 types previously described and one additional type: hypoplastic precommunicating part of the anterior cerebral arteries (A1 and contralateral posterior communicating arteries (PcoA 5(2%. Statistically significant differences (p Conclusion The present study reveals that there are significant variations in the CW among intra and inter ethnic groups (Caucasian, African and Asian: Iran and Sri Lanka dominant populations, and warrants further studies keeping the methods of measurements, data assessment, and the definitions of hypoplasia the same.

  14. Uncertainty budget for optical coordinate measurements of circle diameter

    DEFF Research Database (Denmark)

    Morace, Renate Erica; Hansen, Hans Nørgaard; De Chiffre, Leonardo

    2004-01-01

    An uncertainty analysis for circle diameter measurements using a coordinate measuring machine (CMM) equipped with an optical probe is presented in this paper. A mathematical model for data evaluation and uncertainty assessment was formulated in accordance with Guide to the Expression of Uncertain...

  15. Arctic circles, domino tilings and square Young tableaux

    CERN Document Server

    Romik, Dan

    2009-01-01

    The arctic circle theorem of Jockusch, Propp, and Shor asserts that uniformly random domino tilings of an Aztec diamond of high order are frozen with asymptotically high probability outside the "arctic circle" inscribed within the diamond. A similar arctic circle phenomenon has been observed in the limiting behavior of random square Young tableaux. In this paper, we show that random domino tilings of the Aztec diamond are asymptotically related to random square Young tableaux in a more refined sense that looks also at the behavior inside the arctic circle. This is done by giving a new derivation of the limiting shape of the height function of a random domino tiling of the Aztec diamond that uses the large-deviation techniques developed for the square Young tableaux problem in a previous paper by Pittel and the author. The solution of the variational problem that arises for domino tilings is almost identical to the solution for the case of square Young tableaux by Pittel and the author. The analytic techniques...

  16. Language Teachers through the Looking Glass: Expanding Circle Teachers' Discourse

    Science.gov (United States)

    Lovtsevich, Galina N.

    2005-01-01

    When English language teachers from Russia join in professional discourse with their counterparts from other countries, they do so in English, using a professional register which is, to a large extent, determined by language teaching theorists and practitioners in Inner Circle countries. This paper examines some of the issues surrounding…

  17. An Approach for Self-Calibration by a Quartered Circle

    Directory of Open Access Journals (Sweden)

    Yue Zhao

    2013-07-01

    Full Text Available The camera calibration is a key step for converting a projective reconstruction into a metric one, which is equivalent to recovering the unknown intrinsic parameters with each image. A circle is a common geometric primitive for the camera self-calibration. To avoid the limit of circle center to the camera self-calibration in a planar template, a method how to solve out the vanishing line is proposed. Then using the property of vanishing line, the camera intrinsic parameters are figured out and the camera self-calibration is achieved. The template contains a quartered circle in the study. Firstly, the camera is used to take photographs of the template from three or more direction. Secondly, using the ellipse and two mutually perpendicular diameters which are extracted from the image, according to the polarity principle and making use of the invariant property of cross-ratio of four lines which are intersected in one same point, the vanishing line can be solved out. In the end, the circular points can be figured out by the intersection between vanishing line and the circle. And using the property of the circular points, the self-calibration is realized.

  18. First Voice: The Circle of Courage and Independent Living

    Science.gov (United States)

    Reid, Jennifer S.; Ross, Jean W.

    2005-01-01

    Adolescents in foster care must have a voice and play an active role in envisioning and planning for successful adulthood. This principle serves as the philosophy of First Voice, a training package for anyone who works with youth in foster care. The philosophy corresponds with the four parts of the Circle of Courage--Independence, Belonging,…

  19. The Area of a Polygon with an Inscribed Circle

    CERN Document Server

    Buck, Marshall W

    2012-01-01

    Heron's formula states that the area $K$ of a triangle with sides $a$, $b$, and $c$ is given by $$ K=\\sqrt {s(s-a) (s-b) (s-c)} $$ where $s$ is the semiperimeter $(a+b+c)/2$. Brahmagupta, Robbins, Roskies, and Maley generalized this formula for polygons of up to eight sides inscribed in a circle. In this paper we derive formulas giving the areas of any $n$-gon, with odd $n$, in terms of the ordered list of side lengths, if the $n$-gon is circumscribed about a circle (instead of being inscribed in a circle). Unlike the cyclic polygon problem, where the order of the sides does not matter, for the inscribed circle problem (our case) it does matter. The solution is much easier than for the cyclic polygon problem, but it does generalize easily to all odd $n$. We also provide necessary and sufficient conditions for there to be solutions in the case of even $n$.

  20. Perturbative analysis of maps of the circle onto itself

    Energy Technology Data Exchange (ETDEWEB)

    Zanetti, G. (Bologna Univ. (Italy). Ist. di Fisica); Turchetti, G. (Bologna Univ. (Italy). Ist. di Fisica; Istituto Nazionale di Fisica Nucleare, Bologna (Italy))

    1984-09-15

    As a model problem for the perturbation, up to break up, of tori in Hamoltonian mechanics, the map of the circle into itself is studied. By using classical perturbative techniques, not only the subcritical dynamics is well reproduced, but also the critical point is sharply defined and the conjugacy break up via the loss of differentiability is obtained in agreement with Shenker.

  1. Problem Posing and Problem Solving in a Math Teacher's Circle

    Science.gov (United States)

    Appleton, Eric; Farina, Solange; Holzer, Tyler; Kotelawala, Usha; Trushkowsky, Mark

    2017-01-01

    This article describes the New York City Community of Adult Math Instructors (CAMI), a math teachers' circle founded in November 2014. The authors share details about their own participation in CAMI to show the professional growth that research-based, peer-led professional development can offer for adult educators.

  2. The magic of fairy circles: Built or created?

    Science.gov (United States)

    Sahagian, Dork

    2017-05-01

    Fairy circles are rings of relatively dense grass in arid regions with sparse vegetation. The most famous examples are found in the Namib Desert. There has been an ongoing debate regarding the origin of these features, and a recent paper by Ravi et al. (2017, doi:10.1002/2016JG003604) sheds some light on this situation.

  3. A geometrical link between the circle and sexagesimal system

    CERN Document Server

    Julca, Jaime Vladimir Torres-Heredia

    2007-01-01

    This paper presents a simple geometrical fact which could relate to the history of mathematics and astronomy. This fact shows a natural link between the circle and the multiples of 6 and it makes it possible to obtain a simple representation of the 12 months of the year, the 24 hours of the day, the 30 days (average number) of the month and the 360 days (approximate number) of the year, which brings us closer to the sexagesimal division of time. Moreover this representation reminds one of the movement of the planets around a centre. Using this fact one will be able also to find geometrically the principal divisor of number 60, to represent numbers in base 60 with a kind of abacus or calculation table and to make a division of the circle into 6 and 12 equal parts. Afterwards one will be able to obtain a division in 360 unequal parts but relatively close to one another, and the goal isn't precisely to obtain an optimal division of the circle in 360 equal parts but to prove that the idea to divide the circle in ...

  4. Inclusive Teaching Circles: Mechanisms for Creating Welcoming Classrooms

    Science.gov (United States)

    Moore, Sharon; Wallace, Sherri L.; Schack, Gina; Thomas, M. Shelley; Lewis, Linda; Wilson, Linda; Miller, Shawnise; D'Antoni, Joan

    2010-01-01

    This essay examines the Inclusive Teaching Circle (ITC) as a mechanism for faculty development in creating instructional tools that embrace an inclusive pedagogy reflecting diversity, cultural competence and social justice. We describe one group's year-long participation in an ITC at a large, metropolitan research university in the south. Next, we…

  5. Quantum Mechanics on the Circle and W_{1+\\INFTY}

    OpenAIRE

    Floreanini, R.; Percacci, R.; Sezgin, E.(George P. and Cynthia W. Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University, College Station, TX, 77843-4242, USA)

    1991-01-01

    The algebra W_{1+\\infty} with central charge c=0 can be identified with the algebra of quantum observables of a particle moving on a circle. Mathematically, it is the universal enveloping algebra of the Euclidean algebra in two dimensions. Similarly, the super W_\\infty algebra is found to be the universal enveloping algebra of the super-Euclidean algebra in two dimensions.

  6. Circle Time for Social and Emotional Learning in Primary School

    Science.gov (United States)

    Cefai, Carmel; Ferrario, Erika; Cavioni, Valeria; Carter, Audrey; Grech, Tracy

    2014-01-01

    This paper discusses the findings and implications of a semi-randomised control trial study on the effectiveness of circle time (CT) on primary school students' social and emotional learning, as well as classroom teachers' and students' experience of CT. A social and emotional learning programme was delivered through CT by trained classroom…

  7. Geometric calibration of the circle-plus-arc trajectory.

    Science.gov (United States)

    Hoppe, Stefan; Noo, Frédéric; Dennerlein, Frank; Lauritsch, Günter; Hornegger, Joachim

    2007-12-07

    In this paper, a novel geometric calibration method for C-arm cone-beam scanners is presented which allows the calibration of the circle-plus-arc trajectory. The main idea is the separation of the trajectory into two circular segments (circle segment and arc segment) which are calibrated independently. This separation makes it possible to reuse a calibration phantom which has been successfully applied in clinical environments to calibrate numerous routinely used C-arm systems. For each trajectory segment, the phantom is placed in an optimal position. The two calibration results are then combined by computing the transformation the phantom underwent between the independent calibration runs. This combination can be done in a post-processing step by using standard linear algebra. The method is not limited to circle-plus-arc trajectories and works for any calibration procedure in which the phantom has a preferred orientation with respect to a trajectory segment. Results are presented for both simulated as well as real data acquired with a C-arm system. We also present the first image reconstruction results for the circle-plus-arc trajectory using real C-arm data.

  8. Outcomes and Accomplishments of The Circles of Care Planing Efforts

    Science.gov (United States)

    Duclos, Christine W.; Phillips, Mary; LeMaster, Pamela L.

    2004-01-01

    This paper presents outcomes and accomplishments of the first round of participating individuals, communities, and grantees of the Circles of Care program (CoC). While accomplishing all CoC program goals, the initiative supported grantees in developing individual service delivery system models and positioned each grantee advantageously for…

  9. Is Russell's vicious circle principle false or meaningless?

    NARCIS (Netherlands)

    Fleischhacker, L.E.

    1979-01-01

    P. Vardy asserts the thesis that the vicious circle principle has the same structure as Russell's paradox. But structure is not the thing itself. It is the thing objectivated from the wiewpoint of a mathematician. So this structure can be expressed in a mathematical formalism, e. g. the Λ-calculus.

  10. A review of fast circle and helix fitting

    CERN Document Server

    Frühwirth, R; Waltenberger, W; Wroldsen, J

    2003-01-01

    Circle and helix fitting is of paramount importance in the data analysis of LHC experiments. We review several approaches to exact but fast fitting, including a recent development based on the projection of the measured points onto a second-order surface in space (a sphere or a paraboloid). We present results of a comparison with global and recursive linearized least-squares estimators.

  11. Defining Leadership: Collegiate Women's Learning Circles: A Qualitative Approach

    Science.gov (United States)

    Preston-Cunningham, Tammie; Elbert, Chanda D.; Dooley, Kim E.

    2017-01-01

    The researchers employed qualitative methods to evaluate first-year female students' definition of "leadership" through involvement in the Women's Learning Circle. The findings revealed that students defined leadership in two dimensions: traits and behaviors. The qualitative findings explore a multidimensional approach to the voices of…

  12. Maximum-likelihood estimation of circle parameters via convolution.

    Science.gov (United States)

    Zelniker, Emanuel E; Clarkson, I Vaughan L

    2006-04-01

    The accurate fitting of a circle to noisy measurements of circumferential points is a much studied problem in the literature. In this paper, we present an interpretation of the maximum-likelihood estimator (MLE) and the Delogne-Kåsa estimator (DKE) for circle-center and radius estimation in terms of convolution on an image which is ideal in a certain sense. We use our convolution-based MLE approach to find good estimates for the parameters of a circle in digital images. In digital images, it is then possible to treat these estimates as preliminary estimates into various other numerical techniques which further refine them to achieve subpixel accuracy. We also investigate the relationship between the convolution of an ideal image with a "phase-coded kernel" (PCK) and the MLE. This is related to the "phase-coded annulus" which was introduced by Atherton and Kerbyson who proposed it as one of a number of new convolution kernels for estimating circle center and radius. We show that the PCK is an approximate MLE (AMLE). We compare our AMLE method to the MLE and the DKE as well as the Cramér-Rao Lower Bound in ideal images and in both real and synthetic digital images.

  13. The Circle of Courage and Erikson's Psychological Stages.

    Science.gov (United States)

    Coughlan, Felicity; Welsh-Breetzke, Andrea

    2002-01-01

    Describes the application of positive youth development principles to challenges faced by adolescent females in South Africa. A mainline, Euro-centric theory, Erikson's life stages (1963), is compared with the Circle of Courage model based on Native American Tribal wisdom. The differences and correlation in these approaches are explored through…

  14. Literature Circles: A Perfect Match for Online Instruction

    Science.gov (United States)

    Whittingham, Jeff

    2013-01-01

    This article describes the author's search for an appropriate and satisfying online teaching method. After experimenting with several methods (chat room, discussion board, student led discussion), the author reached back to his face-to-face classroom success with literature circles. This article reports the results of research conducted by the…

  15. Using Literature Circles to Discuss Social Justice in Teacher Education

    Science.gov (United States)

    Madhuri, Marga; Walker, Nancy; Landmann-Johnsey, Erica; Laughter, Judson

    2015-01-01

    Literacy educators feel it is incumbent on teacher preparation programs to prepare teacher candidates with the dispositions and competencies needed to work with students from diverse racial, cultural, and economic backgrounds. As a way to initiate the discussion and help candidates examine their own views on race, literature circles are used. The…

  16. Defining Leadership: Collegiate Women's Learning Circles: A Qualitative Approach

    Science.gov (United States)

    Preston-Cunningham, Tammie; Elbert, Chanda D.; Dooley, Kim E.

    2017-01-01

    The researchers employed qualitative methods to evaluate first-year female students' definition of "leadership" through involvement in the Women's Learning Circle. The findings revealed that students defined leadership in two dimensions: traits and behaviors. The qualitative findings explore a multidimensional approach to the voices of…

  17. Going Full Circle With Teacher Feedback

    Directory of Open Access Journals (Sweden)

    Jo-Anne L. Manswell Butty

    2015-07-01

    Full Text Available Research on the evaluation of early childhood programs focuses mainly on its outcomes rather than its process with often little attention given to the role that feedback to teachers in pre-kindergarten (pre-k programs plays in the larger cycle of the evaluation process. This article provides a case example of a multiyear evaluation of community-based pre-k programs serving about 360 three- and four-year old children over a 5-year period in the District of Columbia. The Closing the Loop Evaluation Model proposed represents a responsive evaluation approach that illustrates the interconnected interactions between teacher feedback during the evaluation process and two supporting evaluation methodologies that emphasize social justice and utility. Findings from the case example highlight the responsive evaluation approach, feedback process, and ensuing conceptual and instrumental changes that occurred among stakeholders from whole-group feedback to small-group “report card” meetings with add-ons such as technical assistance, teacher-generated action plans, and teacher follow-up and feedback to close the evaluation loop. The authors discuss lessons learned about the evaluation process from the case example around aspects of feedback, including timing, audience, and function. Findings highlight the importance of feedback being timely and prompt, high quality in focus and content, non-punitive, collaborative, concise, and useful. The authors conclude that an evaluation process that includes teacher feedback, couched in social justice and utility, can have positive outcomes for all stakeholders and will likely lead to higher quality early childhood education programs.

  18. 品管圈在降低手卫生设施缺陷率及完善布点中的应用%Application of quality control circle in reduction of defect rate of hand hygiene facilities and reasonable layout

    Institute of Scientific and Technical Information of China (English)

    徐文红; 高玲; 任怡; 唐桂春; 王亚闻; 武智慧; 刘喜梅

    2014-01-01

    目的:通过品管圈活动查找手卫生设施缺陷及不合理布点,运用品管手法降低手卫生设施缺陷率及完善布点。方法2013年3-5月运用品管手法调查手卫生设施及布点,共调查407处洗手设施硬件配置、温馨提示、洗手流程图等项目及消手液利用率、布点缺陷情况,分析原因并提出整改策略。结果洗手设施配置及消手液布点存在缺陷:407处洗手池包括1628个调查项目中缺陷总数902项,洗手设施总缺陷率为55.41%,缺温馨提示、缺干手纸、缺洗手液、缺流程图是主要存在的问题;消手液共调查753瓶,在30 d内使用完的131瓶,仅占17.40%,布点缺陷调查显示多人间病房门前、床旁、病区门前、急救车、护士站是需改善的重点位置;整改后洗手设施缺陷率由55.41%降低至19.50%;消手液30 d内用完的比例由17.40%提高至36.48%,利用率得到提高。结论品管圈活动能有效降低手卫生设施缺陷率;同时消手液合理布点提高了资源的利用率,节约了成本,补充了手卫生设施的不足。%OBJECTIVE To find out the defects of hand hygiene facilities and unreasonable layouts through quality control circle(QCC) so as to reduce the rate of detects of hand hygiene facilities and make the layouts reasonable . METHODS From Mar 2013 to May 2013 ,the hand hygiene facilities and layouts were investigated by using the QCC ,then the hardware configuration of hand hygiene facilities ,warm tips ,hand washing flowcharts ,utilization rate of hand disinfectants ,and defects of layouts were investigated in 407 sites ,the causes were analyzed ,and rec-tification strategies were put forward .RESULTS There were defects in the hand hygiene facilities and hand disin-fectants layout sites :among the 407 sites of hand washing basins ,the defects existed in 902 of 1 628 survey items with the total defect rate of 55 .41% ,the absence of warm

  19. Developing Reading Activities by Litearture Circles : In the Case of a Japanese Language Arts Classroom

    OpenAIRE

    山元, 隆春; 居川, あゆ子

    2013-01-01

    In this paper, possibilities of the “Literature Circle" practice in native language classes were explored. By considering on Japanese Language Arts lessons using the idea of “Literature Circle", by one teacher, we found such lessons had effects to enhance students' appetite for learning and reading abilities. And we also suggested that the “Literature Circle" methodology would be effective to developing students' abilities for “criticizing any texts," then we must adapt “Literature Circle" in...

  20. Are Namibian "fairy circles" the consequence of self-organizing spatial vegetation patterning?

    Science.gov (United States)

    Cramer, Michael D; Barger, Nichole N

    2013-01-01

    Causes of over-dispersed barren "fairy circles" that are often surrounded by ca. 0.5 m tall peripheral grasses in a matrix of shorter (ca. 0.2 m tall) grasses in Namibian grasslands remain mysterious. It was hypothesized that the fairy circles are the consequence of self-organizing spatial vegetation patterning arising from resource competition and facilitation. We examined the edaphic properties of fairy circles and variation in fairy circle size, density and landscape occupancy (% land surface) with edaphic properties and water availability at a local scale (<50 km) and with climate and vegetation characteristics at a regional scale. Soil moisture in the barren fairy circles declines from the center towards the periphery and is inversely correlated with soil organic carbon, possibly indicating that the peripheral grass roots access soil moisture that persists into the dry season within fairy circles. Fairy circle landscape occupancy is negatively correlated with precipitation and soil [N], consistent with fairy circles being the product of resource-competition. Regional fairy circle presence/absence is highly predictable using an empirical model that includes narrow ranges of vegetation biomass, precipitation and temperature seasonality as predictor variables, indicating that fairy circles are likely a climate-dependent emergent phenomenon. This dependence of fairy circle occurrence on climate explains why fairy circles in some locations may appear and disappear over time. Fairy circles are only over-dispersed at high landscape occupancies, indicating that inter-circle competition may determine their spacing. We conclude that fairy circles are likely to be an emergent arid-grassland phenomenon that forms as a consequence of peripheral grass resource-competition and that the consequent barren circle may provide a resource-reservoir essential for the survival of the larger peripheral grasses and provides a habitat for fossicking fauna.

  1. Are Namibian "fairy circles" the consequence of self-organizing spatial vegetation patterning?

    Directory of Open Access Journals (Sweden)

    Michael D Cramer

    Full Text Available Causes of over-dispersed barren "fairy circles" that are often surrounded by ca. 0.5 m tall peripheral grasses in a matrix of shorter (ca. 0.2 m tall grasses in Namibian grasslands remain mysterious. It was hypothesized that the fairy circles are the consequence of self-organizing spatial vegetation patterning arising from resource competition and facilitation. We examined the edaphic properties of fairy circles and variation in fairy circle size, density and landscape occupancy (% land surface with edaphic properties and water availability at a local scale (<50 km and with climate and vegetation characteristics at a regional scale. Soil moisture in the barren fairy circles declines from the center towards the periphery and is inversely correlated with soil organic carbon, possibly indicating that the peripheral grass roots access soil moisture that persists into the dry season within fairy circles. Fairy circle landscape occupancy is negatively correlated with precipitation and soil [N], consistent with fairy circles being the product of resource-competition. Regional fairy circle presence/absence is highly predictable using an empirical model that includes narrow ranges of vegetation biomass, precipitation and temperature seasonality as predictor variables, indicating that fairy circles are likely a climate-dependent emergent phenomenon. This dependence of fairy circle occurrence on climate explains why fairy circles in some locations may appear and disappear over time. Fairy circles are only over-dispersed at high landscape occupancies, indicating that inter-circle competition may determine their spacing. We conclude that fairy circles are likely to be an emergent arid-grassland phenomenon that forms as a consequence of peripheral grass resource-competition and that the consequent barren circle may provide a resource-reservoir essential for the survival of the larger peripheral grasses and provides a habitat for fossicking fauna.

  2. The Chicken and the Egg: Inviting Response and Talk through Socratic Circles

    Science.gov (United States)

    Styslinger, Mary E.; Pollock, Timothy

    2010-01-01

    This collaborative inquiry answers the following questions: 1) What is the nature of talk during Socratic Circles? 2) What is student response to talk? 3) How might knowing more about student response to talk and the nature of talk improve teaching during Socratic Circles? The article first describes the process of implementing Socratic Circles,…

  3. Native American Values and Management Education: Envisioning an Inclusive Virtuous Circle

    Science.gov (United States)

    Verbos, Amy Klemm; Gladstone, Joe S.; Kennedy, Deanna M.

    2011-01-01

    Circles are symbols of interconnectedness. Behavioral circles can be vicious or virtuous. Many American Indians are caught in a vicious circle of exclusion from the purported benefits of Westernization, entrapment in its negative elements, and the ongoing undermining of their culture and thus their identities. Yet Native Americans, along with many…

  4. The Chicken and the Egg: Inviting Response and Talk through Socratic Circles

    Science.gov (United States)

    Styslinger, Mary E.; Pollock, Timothy

    2010-01-01

    This collaborative inquiry answers the following questions: 1) What is the nature of talk during Socratic Circles? 2) What is student response to talk? 3) How might knowing more about student response to talk and the nature of talk improve teaching during Socratic Circles? The article first describes the process of implementing Socratic Circles,…

  5. Calculation of Latitude and Longitude for Points on Perimeter of a Circle on a Sphere

    Energy Technology Data Exchange (ETDEWEB)

    Morris, Heidi E. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2015-08-14

    This document describes the calculation of the Earth-Centered Earth Fixed (ECEF) coordinates for points lying on the perimeter of a circle. Here, the perimeter of the circle lies on the surface of the sphere and the center of the planar circle is below the surface. These coordinates are converted to latitude and longitude for mapping fields on the surface of the earth.

  6. Dynamics on geometrically finite hyperbolic manifolds with applications to Apollonian circle packings and beyond

    CERN Document Server

    Oh, Hee

    2010-01-01

    We present recent results on counting and distribution of circles in a given circle packing invariant under a geometrically finite Kleinian group and discuss how the dynamics of flows on geometrically finite hyperbolic $3$ manifolds are related. Our results apply to Apollonian circle packings, Sierpinski curves, Schottky dances, etc.

  7. From EUCLID to Ptolemy in English Crop Circles

    Science.gov (United States)

    Hawkins, G. S.

    1997-12-01

    The late Lord Soli Zuckerman, science advisor to several British governments, encouraged the author, an astronomer, to test the theory that all crop circles were made by hoaxers. Within the hundreds of formations in Southern England he saw a thread of surprising historical content at the intellectual level of College Dons. One diagram in celestial mechanics involved triple conjunctions of Mercury, Venus and Mars every 67 2/3 years. Ptolemy's fourth musical scale, tense diatonic, occurred in the circles during the period 1978-88. Starting on E, Ptolemaic ratios make our perfect diatonic scale of white notes on the keyboard of the piano or church organ. For separated circles the ratio was given by diameters, and for concentric circles it was diameters squared. A series of rotationally symmetric figures began in 1988 which combined Ptolemy's ratios with Euclid's theorems. In his last plane theorem, Euclid (Elements 13,12) proved that the square on the side of an equilateral triangle is 3 times the square on the circum-circle radius -- diatonic note G(2). From the 1988 figure one can prove the square on the side is 16/3 times the square on the semi-altitude, giving note F(3). Later rotational figures over the next 5 years led to diatonic ratios for the hexagon, square and triangle. They gave with the exactness of Euclidean theorems the notes F, C(2) and E(2), and they are the only regular polygons to do so. Although these 4 crop theorems derive from Euclid, they were previously unknown as a set in the literature, nor had the Ptolemaic connection been published. Professional magazines asked the readers to provide a fifth theorem that would generate the above 4 theorems, but none was forthcoming. Ultimately the cicle makers showed knowledge of this generating theorem using a 200-ft design at Litchfield, Hampshire. After 1993, rotationally symmetric geometries continued to appear, but with much more complicated patterns. One design showed 6 crescent moons in a hexagon

  8. productivity and quality: a strategy for the sa defence force

    African Journals Online (AJOL)

    concepts of Total Quality Management. (TQM),Quality Circles ... and the characteristics of a successful .... of how it is defined, is a function of both the ... implementing the rules and regulations relating to .... veloping the human resources of the.

  9. 品管圈在急诊护士经历工作场所暴力致创伤应激障碍中的应用%Application of quality control circle to release emergency nurse’ s workplace violence of posttraumatic stress disorder

    Institute of Scientific and Technical Information of China (English)

    周玲玲; 童静; 张明; 陈松芳

    2014-01-01

    精神心理健康状况,有利于患者精神心理康复。%Objective To evaluate the effect of quality control circle ( QCC) application on releasing emergency nurse’ s workplace violence of posttraumatic stress disorder.Methods We utilized digital table method to divide forty five emergency nurses in certain hospitals who suffered workplace violence at first time into two groups randomly:experimental group ( twenty four cases) and control group ( twenty one cases) .Emergency nurses in the experimental gruop received psychological crisis interventions by QCC team while nurses in the control group were given general psychological interventions.The questionnaire survey occurred at early period (in the first week) and after three months of violence including demographic information questionnaire, the sense of job accidie questionnaire, PTSD-SS and WCQ, and analyzed the result of survey.Results At the early stage of suffered violence, the score of PTSD-SS, job accidie and the score coping style had no statistical difference (P>0.05).After three months, the nurse in experimental group acquired the score of subjective assessment (2.01 ±0.19), social function (5.03 ±1.09), re-experienced (20.12 ±1.80), withdrawal symptoms (20.11 ±3.98) were lower than control group [(3.09 ±0.23),(6.63 ±1.27),(26.31 ±1.91), (28.92 ±4.7), respectively],the differences were statistically significant (t=2.516,2.121,2.331,2.453, respectively;P0.05).After three months’ intervention, the score of PTSD-SS, job accidie and negative coping style decreased while positive coping style increased in the experimental group (P<0.05).Meanwhile, the control group just increased vigilance increasing score (P<0.05).Conclusions The QCC is effective to promote psychological wellbeing when emergency nurses suffered workplace environment and benefits to recover.

  10. Landscapes, Circles and Antikythera: The Birth of the Mechanical Universe

    Science.gov (United States)

    Edmunds, M. G.

    The joint Greek/UK/US Antikythera Mechanism Research Project is currently producing a definitive set of experimental optical and X-ray imaging data of the Mechanism. The interpretation will require a good knowledge of the context in which it was made. Following from the sacred landscapes of northern Europe it is difficult to escape the symbolism of the "circle" in prehistoric cosmologies, and the pre-eminence of the circle in Greek astronomical thought is obvious. Is the "circular" ikon of the main wheel in Antikythera Mechanism simply another gear wheel, or might ideas of cosmology have influenced its design? How important would devices like the Antikythera Mechanism have been in providing a physical model of the Universe , pushing mathematical abstraction into reality? The relevance of the Mechanism is understanding the development of ideas and philosophy, particularly determinism is emphasized.

  11. Protocol for Isolating the Mouse Circle of Willis.

    Science.gov (United States)

    Hur, Justine Claire; Blaise, Régis; Limon, Isabelle

    2016-10-22

    The cerebral arterial circle (circulus arteriosus cerebri) or circle of Willis (CoW) is a circulatory anastomosis surrounding the optic chiasma and hypothalamus that supplies blood to the brain and surrounding structures. It has been implicated in several cerebrovascular disorders, including cerebral amyloid angiopathy (CAA)-associated vasculopathies, intracranial atherosclerosis and intracranial aneurysms. Studies of the molecular mechanisms underlying these diseases for the identification of novel drug targets for their prevention require animal models. Some of these models may be transgenic, whereas others will involve isolation of the cerebro-vasculature, including the CoW.The method described here is suitable for CoW isolation in any mouse lineage and has considerable potential for screening (expression of genes, protein production, posttranslational protein modifications, secretome analysis, etc.) studies on the large vessels of the mouse cerebro-vasculature. It can also be used for ex vivo studies, by adapting the organ bath system developed for isolated mouse olfactory arteries.

  12. Culture Circles in adolescent empowerment for the prevention of violence.

    Science.gov (United States)

    Monteiro, Estela Maria Leite Meirelles; Neto, Waldemar Brandão; de Lima, Luciane Soares; de Aquino, Jael Maria; Gontijo, Daniela Tavares; Pereira, Beatriz Oliveira

    2015-04-03

    An action research based on Paulo Freire's Culture Circles was developed to implement a health education intervention involving adolescents, in collective knowledge construction about strategies for the prevention of violence. The data collection in the Culture Circles involved 11 adolescents and included observation and field diary, photographic records and recording. The educational action aroused a critical socio-political and cultural position in the adolescents towards the situations of vulnerability to violence, including the guarantee of human rights, justice and the combat of inequities; changes in the social relations, combat against discrimination and intolerance; expansion of access and reorientation of health services through intersectoral public policies. The intervention empowered the group of adolescents for the prevention of violence and permitted the inclusion of health professionals in the school context, from an interdisciplinary perspective, contributing to the establishment of social support and protection networks.

  13. Rolling circle amplification of complete nematode mitochondrial genomes.

    Science.gov (United States)

    Tang, Sha; Hyman, Bradley C

    2005-06-01

    To enable investigation of nematode mitochondrial DNA evolution, methodology has been developed to amplify intact nematode mitochondrial genomes in preparative yields using a rolling circle replication strategy. Successful reactions were generated from whole cell template DNA prepared by alkaline lysis of the rhabditid nematode Caenorhabditis elegans and a mermithid nematode, Thaumamermis cosgrovei. These taxa, representing the two major nematode classes Chromodorea and Enoplea, maintain mitochondrial genomes of 13.8 kb and 20.0 kb, respectively. Efficient amplifications were conducted on template DNA isolated from individual or pooled nematodes that were alive or stored at -80 degrees C. Unexpectedly, these experiments revealed that multiple T. cosgrovei mitochondrial DNA haplotypes are maintained in our local population. Rolling circle amplification products can be used as templates for standard PCR reactions with specific primers that target mitochondrial genes or for direct DNA sequencing.

  14. The concept of magic circle: a critical reading

    Directory of Open Access Journals (Sweden)

    Arlete dos Santos Petry

    2013-09-01

    Full Text Available This article deals with establishing and discussing the concept of magic circle - often present in game studies - and ponder the possible relations with the concept of liminality, worked in cultural anthropology from the rites of passage standpoint in Van Gennep and Victor Turner and with the concept of transitional phenomenon by psychoanalyst Donald Winnicott. Towards that, we seek references in studies of the respective areas of knowledge, in order to reflect on the experience of play. The establishment of the relationship between the concepts mentioned - magic circle, liminality, transitional phenomenon - takes a step forward on the path that seeks to answer what play is and its relevance in contemporary life. Thus, given the large access to digital games today, this article provides a relevant contribution to Communication studies.

  15. About Nodal Systems for Lagrange Interpolation on the Circle

    Directory of Open Access Journals (Sweden)

    E. Berriochoa

    2012-01-01

    Full Text Available We study the convergence of the Laurent polynomials of Lagrange interpolation on the unit circle for continuous functions satisfying a condition about their modulus of continuity. The novelty of the result is that now the nodal systems are more general than those constituted by the n roots of complex unimodular numbers and the class of functions is different from the usually studied. Moreover, some consequences for the Lagrange interpolation on [-1,1] and the Lagrange trigonometric interpolation are obtained.

  16. Content-aware photo collage using circle packing.

    Science.gov (United States)

    Yu, Zongqiao; Lu, Lin; Guo, Yanwen; Fan, Rongfei; Liu, Mingming; Wang, Wenping

    2014-02-01

    In this paper, we present a novel approach for automatically creating the photo collage that assembles the interest regions of a given group of images naturally. Previous methods on photo collage are generally built upon a well-defined optimization framework, which computes all the geometric parameters and layer indices for input photos on the given canvas by optimizing a unified objective function. The complex nonlinear form of optimization function limits their scalability and efficiency. From the geometric point of view, we recast the generation of collage as a region partition problem such that each image is displayed in its corresponding region partitioned from the canvas. The core of this is an efficient power-diagram-based circle packing algorithm that arranges a series of circles assigned to input photos compactly in the given canvas. To favor important photos, the circles are associated with image importances determined by an image ranking process. A heuristic search process is developed to ensure that salient information of each photo is displayed in the polygonal area resulting from circle packing. With our new formulation, each factor influencing the state of a photo is optimized in an independent stage, and computation of the optimal states for neighboring photos are completely decoupled. This improves the scalability of collage results and ensures their diversity. We also devise a saliency-based image fusion scheme to generate seamless compositive collage. Our approach can generate the collages on nonrectangular canvases and supports interactive collage that allows the user to refine collage results according to his/her personal preferences. We conduct extensive experiments and show the superiority of our algorithm by comparing against previous methods.

  17. Uncertainty budget for optical coordinate measurements of circle diameter

    DEFF Research Database (Denmark)

    Morace, Renate Erica; Hansen, Hans Nørgaard; De Chiffre, Leonardo

    2004-01-01

    An uncertainty analysis for circle diameter measurements using a coordinate measuring machine (CMM) equipped with an optical probe is presented in this paper. A mathematical model for data evaluation and uncertainty assessment was formulated in accordance with Guide to the Expression of Uncertainty...... in Measurement (GUM). Various input quantities such as CCD camera resolution, influence of illuminating system, CMM errors etc. were considered in the model function and experimentally investigated....

  18. BANQUET SPEECH Full Circle: Star Ferry to Stardust

    Science.gov (United States)

    Matthews, Clifford N.

    2008-10-01

    Good evening. I'd like to invite you to join me on a journey that could be entitled “Full Circle: Star Ferry to Stardust”. “Star Ferry” represents Hong Kong, my home town, and especially its university - Hong Kong University - as I knew it during the years of World War II. “Stardust” refers to our gathering here to report on our research on possible organic chemistry in space.

  19. Largest Empty Circle Centered on a Query Line

    CERN Document Server

    Augustine, John; Roy, Sasanka

    2008-01-01

    The Largest Empty Circle problem seeks the largest circle centered within the convex hull of a set $P$ of $n$ points in $\\mathbb{R}^2$ and devoid of points from $P$. In this paper, we introduce a query version of this well-studied problem. In our query version, we are required to preprocess $P$ so that when given a query line $Q$, we can quickly compute the largest empty circle centered at some point on $Q$ and within the convex hull of $P$. We present solutions for two special cases and the general case; all our queries run in $O(\\log n)$ time. We restrict the query line to be horizontal in the first special case, which we preprocess in $O(n \\alpha(n) \\log n)$ time and space, where $\\alpha(n)$ is the slow growing inverse of the Ackermann's function. When the query line is restricted to pass through a fixed point, the second special case, our preprocessing takes $O(n \\alpha(n)^{O(\\alpha(n))} \\log n)$ time and space. We use insights from the two special cases to solve the general version of the problem with pr...

  20. Volume calculation of the spur gear billet for cold precision forging with average circle method

    Institute of Scientific and Technical Information of China (English)

    Wangjun Cheng; Chengzhong Chi; Yongzhen Wang; Peng Lin; Wei Liang; Chen Li

    2014-01-01

    Forging spur gears are widely used in the driving system of mining machinery and equipment due to their higher strength and dimensional accuracy. For the purpose of precisely calculating the volume of cylindrical spur gear billet in cold precision forging, a new theoretical method named average circle method was put forward. With this method, a series of gear billet volumes were calculated. Comparing with the accurate three-dimensional modeling method, the accuracy of average circle method by theoretical calculation was estimated and the maximum relative error of average circle method was less than 1.5%, which was in good agreement with the experimental results. Relative errors of the calculated and the experimental for obtaining the gear billet volumes with reference circle method are larger than those of the average circle method. It shows that average circle method possesses a higher calculation accuracy than reference circle method (traditional method), which should be worth popularizing widely in calculation of spur gear billet volume.

  1. Circle quorum system-based non-stop network service model.

    Science.gov (United States)

    Song, Ping; Sun, Jian-ling; He, Zhi-jun

    2004-05-01

    Rapid developments in network systems of business service have resulted in more reliance on distributed computing, typified by "subscriber/push" architectures. Unfortunately, frequent and unexpectable network failures were routine, and downtime was not in hours, but in days. High availability has become the most important factor decreasing business risk and improving Quality of Service. Cluster technology has solved the non-stop problem on Local Area Network. However, most technologies including cluster today fail to ensure the non-stop Internet service based on Routers. With good performance on high availability and fault tolerance, quorum systems are very suitable for application to distributed business service networks. In this work, we modeled and developed a non-stop Internet service system based on a new quorum system, circle quorum system, for Boston Mutual Fund Broker, US. With five protocols, it provided highly available data services for clients on Internet.

  2. Circle quorum system-based non-stop network service model

    Institute of Scientific and Technical Information of China (English)

    宋平; 孙建伶; 何志均

    2004-01-01

    Rapid developments in network systems of business service have resulted in more reliance on distributed computing, typified by “subscriber/push” architectures. Unfortunately, frequent and unexpectable network failures were routine, and downtime was not in hours, but in days. High availability has become the most important factor decreasing business risk and improving Quality of Service. Cluster technology has solved the non-stop problem on Local Area Network. However, most technologies including cluster today fail to ensure the non-stop Internet service based on Routers. With good performance on high availability and fault tolerance, quorum systems are very suitable for application to distributed business service networks. In this work, we modeled and developed a non-stop Internet service system based on a new quorum system, circle quorum system, for Boston Mutual Fund Broker, US. With five protocols, it provided highly available data services for clients on Internet.

  3. Circle quorum system-based non-stop network service model

    Institute of Scientific and Technical Information of China (English)

    宋平; 孙建伶; 何志均

    2004-01-01

    Rapid developments in network systems of business service have resulted in more reliance on distributed computing, typified by "subscriber/push" architectures. Unfortunately, frequent and unexpectable network failures were routine, and downtime was not in hours, but in days. High availability has become the most important factor decreasing business risk and improving Quality of Service. Cluster technology has solved the non-stop problem on Local Area Network. However, most technologies including cluster today fail to ensure the non-stop Internet service based on Routers. With good performance on high availability and fault tolerance, quorum systems are very suitable for application to distributed business service networks. In this work, we modeled and developed a non-stop Internet service system based on a new quorum system, circle quorum system, for Boston Mutual Fund Broker, US. With five protocols, it provided highly available data services for clients on Internet.

  4. Voice of the voiceless: The legacy of the Circle of Concerned African Women Theologians

    Directory of Open Access Journals (Sweden)

    Hazel O. Ayanga

    2016-07-01

    Full Text Available The Circle of Concerned African Women Theologians (the Circle formally came into existence in 1989 in Accra, Ghana. Under the charismatic leadership of Mercy Amba Oduyoye, the Circle sought to be the voice of African Christian women at the grass roots level. To this end research and publication was and still is one of the major pillars and activities of the Circle. The main objective of the Circle is �to write and publish theological literature written by African women from their own experience of religion and culture on this continent�. In this regard the Circle has been and continues to be the voice for and on behalf of the African woman in religion, culture and theology. However, 25 years down the line there is need for an evaluation of the legacy of the Circle. How has the Circle been a voice for the voiceless, a mentoring instrument for women venturing into the academia? This article seeks to do this evaluation by examining the activities of the Circle including research publication.Intradisciplinary and/or interdisciplinary implications: This article seeks to evaluate the achievements of the Circle of Concerned African Women Theologians in relation to the Circle�s stated objectives. The article picks up the notion of the Circle theologians as the voice of the voiceless women of Africa. The general approach of the article brings together discussions on social issues like gender, poverty and marginalisation as well as language. Theological and religious perspectives on these issues are understood from a Circle point of view.Keywords: women; voice; voicelessness; poverty; gender; The Circle; theology

  5. Stereoscopic Machine-Vision System Using Projected Circles

    Science.gov (United States)

    Mackey, Jeffrey R.

    2010-01-01

    A machine-vision system capable of detecting obstacles large enough to damage or trap a robotic vehicle is undergoing development. The system includes (1) a pattern generator that projects concentric circles of laser light forward onto the terrain, (2) a stereoscopic pair of cameras that are aimed forward to acquire images of the circles, (3) a frame grabber and digitizer for acquiring image data from the cameras, and (4) a single-board computer that processes the data. The system is being developed as a prototype of machine- vision systems to enable robotic vehicles ( rovers ) on remote planets to avoid craters, large rocks, and other terrain features that could capture or damage the vehicles. Potential terrestrial applications of systems like this one could include terrain mapping, collision avoidance, navigation of robotic vehicles, mining, and robotic rescue. This system is based partly on the same principles as those of a prior stereoscopic machine-vision system in which the cameras acquire images of a single stripe of laser light that is swept forward across the terrain. However, this system is designed to afford improvements over some of the undesirable features of the prior system, including the need for a pan-and-tilt mechanism to aim the laser to generate the swept stripe, ambiguities in interpretation of the single-stripe image, the time needed to sweep the stripe across the terrain and process the data from many images acquired during that time, and difficulty of calibration because of the narrowness of the stripe. In this system, the pattern generator does not contain any moving parts and need not be mounted on a pan-and-tilt mechanism: the pattern of concentric circles is projected steadily in the forward direction. The system calibrates itself by use of data acquired during projection of the concentric-circle pattern onto a known target representing flat ground. The calibration- target image data are stored in the computer memory for use as a

  6. Deteksi Iris Berdasarkan Metode Black Hole dan Circle Curve Fitting

    Directory of Open Access Journals (Sweden)

    Danny Kurnianto

    2013-11-01

    Full Text Available Sistem pengenalan identitas personal berdasarkan ciri biometrika adalah suatu sistem pengenalan seseorang berdasarkan pada ciri biometrika yang melekat pada orang tersebut. Iris mata merupakan salah satu ciri biometrik yang handal untuk sistem pengenalan identitas personal. Bagian sistem pengenalan identitas personal berdasarkan biometrik iris yang dianggap paling krusial adalah deteksi lokasi iris, karena akurasi deteksi iris berpengaruh pada tingkat akurasi sistem secara keseluruhan. Lokasi iris pada citra mata dibatasi oleh dua buah lingkaran yang memisahkan antara bagian iris  dengan pupil dan sklera. Telah banyak metodemetode yang diusulkan oleh para peneliti untuk menghasilkan deteksi lokasi iris dengan akurat dan cepat. Masalah akurasi, kecepatan waktu eksekusi dan ketahanan terhadap noise merupakan bidang penelitian yang menantang pada deteksi iris. Makalah ini menyajikan metode deteksi iris menggunakan metode black hole dan circle curve fitting. Langkah pertama, mencari batas dalam lingkaran iris yang memisahkan antara daerah iris dan pupil. Dengan metode black hole yang bekerja berdasarkan fakta bahwa lokasi pupil merupakan daerah  lingkaran yang paling hitam dan memiliki distribusi nilai intensitas yang seragam, maka lokasi pupil dapat ditentukan dengan teknik pengambangan. Batas lingkaran pupil dapat ditentukan dengan circle curve fitting dari parameter lingkaran daerah pupil. Langkah kedua,  mencari batas luar lingkaran iris yang memisahkan antara iris dan sklera. Peta tepi citra iris dicari dengan menggunakan deteksi tepi Canny, kemudian diambil satu komponen tepi arah vertikal yang dapat mewakili batas lingkaran luar iris. Dari komponen tepi tersebut, dihitung jari-jari iris yang berpusat di pusat pupil. Dengan jari-jari iris dan pusat iris maka dapat ditentukan batas luar iris menggunakan circle curve fitting

  7. The Risks We Dread: A Social Circle Account

    Science.gov (United States)

    Galesic, Mirta; Garcia-Retamero, Rocio

    2012-01-01

    What makes some risks dreadful? We propose that people are particularly sensitive to threats that could kill the number of people that is similar to the size of a typical human social circle. Although there is some variability in reported sizes of social circles, active contact rarely seems to be maintained with more than about 100 people. The loss of this immediate social group may have had survival consequences in the past and still causes great distress to people today. Therefore we hypothesize that risks that threaten a much larger number of people (e.g., 1000) will not be dreaded more than those that threaten to kill “only” the number of people typical for social circles. We found support for this hypothesis in 9 experiments using different risk scenarios, measurements of fear, and samples from different countries. Fear of risks killing 100 people was higher than fear of risks killing 10 people, but there was no difference in fear of risks killing 100 or 1000 people (Experiments 1–4, 7–9). Also in support of the hypothesis, the median number of deaths that would cause maximum level of fear was 100 (Experiments 5 and 6). These results are not a consequence of lack of differentiation between the numbers 100 and 1000 (Experiments 7 and 8), and are different from the phenomenon of “psychophysical numbing” that occurs in the context of altruistic behavior towards members of other communities rather than in the context of threat to one's own community (Experiment 9). We discuss several possible explanations of these findings. Our results stress the importance of considering social environments when studying people's understanding of and reactions to risks. PMID:22509250

  8. The dot-in-circle sign of mycetoma on MRI.

    Science.gov (United States)

    Kumar, Jyoti; Kumar, Atin; Sethy, Pradeep; Gupta, Somesh

    2007-12-01

    Mycetoma is a chronic granulomatous disease prevalent in tropical countries, but it also occurs in Europe and the United States. Early diagnosis is important as it has therapeutic implications. Although biopsy and microbiological culture provide the definitive diagnosis, these are difficult to achieve in many instances. The dot-in-circle sign is a recently proposed magnetic resonance imaging (MRI) sign of mycetoma, which is likely to be highly specific. We present a case of mycetoma of the thigh with characteristic MRI features. To the best of our knowledge, only 2 cases of mycetoma of the foot demonstrating this sign have been previously published.

  9. The Phenomenological Circle and the Unity of Life and Thought.

    Science.gov (United States)

    Atwood, George E; Stolorow, Robert D

    2016-06-01

    This paper describes the important role of our deep immersions in philosophy in the development of our phenomenological-contextualist approach to psychoanalysis. Influenced most particularly by the phenomenological movement, our collaborative dialogue over more than four decades has led us to a shared commitment to reflection upon the philosophical underpinnings and constitutive contexts of origin of all our theoretical ideas. The growth of our thinking follows an endlessly recurring phenomenological circle joining theoretical perspectives with the inquirers from whose emotional worlds they arise.

  10. Star Formation Beyond the Solar Circle: A Survey of Surveys

    Science.gov (United States)

    Kerton, Charles R.

    2013-06-01

    This talk will review and distill the results of major radio, infrared, and combined radio/IR, surveys that have focused on the identification and characterization of active regions of star formation in the outer Galaxy. These surveys reveal that, in terms of star formation activity, the Milky Way beyond the solar circle is not a vast wasteland, but rather it is an area containing numerous regions of star formation well placed for detailed individual study, for large-scale studies of star formation within spiral arms, and for comparative studies with star formation occurring in different environments such as the inner Galaxy and Galactic center.

  11. [Albert Fromme (1881-1996) and his circle].

    Science.gov (United States)

    Klimpel, V

    1996-12-01

    Among Saxony's schools of surgery, Albert Fromme's in Dresden attain importance. On the basis of his work as a university professor in Göttingen for 10 years, he was able to train a large circle of surgeons in a major hospital. However, this did not detract from his clinical and scientific work. A. Fromme reached the top of German surgery and his crowning achievement was gaining the full professorship and rectorship of the Medical Academy "Carl Gustav Carus" in Dresden (today the Medical Faculty of the Technical University.

  12. Exact and efficient cone-beam reconstruction algorithm for a short-scan circle combined with various lines

    Science.gov (United States)

    Dennerlein, Frank; Katsevich, Alexander; Lauritsch, Guenter; Hornegger, Joachim

    2005-04-01

    X-ray 3D rotational angiography based on C-arm systems has become a versatile and established tomographic imaging modality for high contrast objects in interventional environment. Improvements in data acquisition, e.g. by use of flat panel detectors, will enable C-arm systems to resolve even low-contrast details. However, further progress will be limited by the incompleteness of data acquisition on the conventional short-scan circular source trajectories. Cone artifacts, which result from that incompleteness, significantly degrade image quality by severe smearing and shading. To assure data completeness a combination of a partial circle with one or several line segments is investigated. A new and efficient reconstruction algorithm is deduced from a general inversion formula based on 3D Radon theory. The method is theoretically exact, possesses shift-invariant filtered backprojection (FBP) structure, and solves the long object problem. The algorithm is flexible in dealing with various circle and line configurations. The reconstruction method requires nothing more than the theoretically minimum length of scan trajectory. It consists of a conventional short-scan circle and a line segment approximately twice as long as the height of the region-of-interest. Geometrical deviations from the ideal source trajectory are considered in the implementation in order to handle data of real C-arm systems. Reconstruction results show excellent image quality free of cone artifacts. The proposed scan trajectory and reconstruction algorithm assure excellent image quality and allow low-contrast tomographic imaging with C-arm based cone-beam systems. The method can be implemented without any hardware modifications on systems commercially available today.

  13. SPECTRA OF MOTHERS OF PREMATURE CHILDREN ABOUT THE EDUCATIVE CIRCLE OF CULTURE

    Directory of Open Access Journals (Sweden)

    Camila Santos do Couto

    2014-12-01

    Full Text Available Abstract We sought to know the spectra of mothers of premature children regarding their experience with circle of culture of educational character and identifying the learning provided by the circle of culture about newborn care after hospital discharge. A descriptive study was performed in a hospital located in Fortaleza, Brazil. Three meetings of a circle of culture with 17 mothers of premature newborns were performed. The interpretation of the corpus was performed using thematic analysis. Emerged from the categories: Maternal experience in a circle of culture; Promoted social support among mothers through the circle of culture; and Learning provided by the circle of culture. It was concluded that teaching parents during the hospitalization of the child should be held in a way to involve parents in the care of the newborn, provide moments of health education, opportunities for support and dialogue between professionals and family.

  14. Eccentricity on AN Image Caused by Projection of a Circle and a Sphere

    Science.gov (United States)

    Matsuoka, R.; Maruyama, S.

    2016-06-01

    Circular targets on a plane are often utilized in photogrammetry, particularly in close range photogrammetry, while spherical targets are sometimes utilized in industrial applications. Both a circle and a sphere are projected as an ellipse onto an image. There is an eccentricity on an image between the centre of the projected ellipse and the projected location of the centre of a circle or a sphere. Since only the centre of the projected ellipse is measured, the correction of the eccentricity is considered to be necessary for highly accurate measurement. This paper shows a process to derive general formulae to calculate an eccentricity of a circle and a sphere using the size and the location of a circle or a sphere, and the focal length, the position and the attitude of a camera. Furthermore the paper shows methods to estimate the eccentricity of a circle and a sphere from the equation of the projected ellipse of a circle or a sphere on an image.

  15. Drawing Euler Diagrams with Circles: The Theory of Piercings.

    Science.gov (United States)

    Stapleton, Gem; Leishi Zhang; Howse, John; Rodgers, Peter

    2011-07-01

    Euler diagrams are effective tools for visualizing set intersections. They have a large number of application areas ranging from statistical data analysis to software engineering. However, the automated generation of Euler diagrams has never been easy: given an abstract description of a required Euler diagram, it is computationally expensive to generate the diagram. Moreover, the generated diagrams represent sets by polygons, sometimes with quite irregular shapes that make the diagrams less comprehensible. In this paper, we address these two issues by developing the theory of piercings, where we define single piercing curves and double piercing curves. We prove that if a diagram can be built inductively by successively adding piercing curves under certain constraints, then it can be drawn with circles, which are more esthetically pleasing than arbitrary polygons. The theory of piercings is developed at the abstract level. In addition, we present a Java implementation that, given an inductively pierced abstract description, generates an Euler diagram consisting only of circles within polynomial time.

  16. Strange Non-Chaotic Attractors in Quasiperiodically Forced Circle Maps

    Science.gov (United States)

    Jäger, Tobias

    2009-07-01

    The occurrence of strange non-chaotic attractors (SNA) in quasiperiodically forced systems has attracted considerable interest over the last two decades, in particular since it provides a rich class of examples for the possibility of complicated dynamics in the absence of chaos. Their existence was first described by Millions̆c̆ikov (and later by Vinograd and also Herman) for quasiperiodic {SL(2, {mathbb R})} -cocycles and by Grebogi et al (and later Keller) for so-called pinched skew products. However, except for these two particular classes there are still hardly any rigorous results on the topic, despite a large number of numerical studies confirming the widespread existence of SNA in quasiperiodically forced systems. Here, we prove the existence of SNA in quasiperiodically forced circle maps under rather general conditions, which can be stated in terms of {{mathcal C}^1} -estimates. As a consequence, we obtain the existence of SNA for parameter sets of positive measure in suitable parameter families. These SNA carry the unique physical measure of the system, which determines the behaviour of Lebesgue-almost all initial conditions. Finally, we show that the dynamics are minimal in the considered situations. The results apply in particular to a forced version of the Arnold circle map. For this example, we also describe how the first Arnold tongue collapses and looses its regularity due to the presence of strange non-chaotic attractors and a related unbounded mean motion property.

  17. Beyond paradigms in Organization Studies: the Circle of Epistemic Matrices

    Directory of Open Access Journals (Sweden)

    Ana Paula Paes de Paula

    Full Text Available Abstract In this article, I present a sketch of a new proposition to guide organizational studies: the Cicle of Epistemic Matrices. Inspired by Thomas Kuhn and based on the thesis of paradigms' incommensurability, Gibson Burrell and Gareth Morgan drew the diagram of sociological paradigms, but its inclusion in the academy has encouraged a paradigms war. The Circle of Epistemic Matrices also provides an outline for the guidance of organizational studies, but it is based on Habermas and defends the thesis of cognitive incompleteness, suggesting that the sociological and organizational knowledge grows according to the thesis of epistemic reconstructions. To accomplish these propositions and elaborations, I present the debate about the paradigms' war in literature and I question the adequacy of sociological paradigms of Gibson Burrell and Gareth Morgan to organizational studies, with the issue of the influence that it suffered from Kuhnian paradigms and logic. In the following sections, there is an exhibition of alternative proposition - the of Circle of Epistemic Matrices - and, also, I support the thesis of cognitive incompleteness and the thesis of epistemic reconstructions in order to bring a new theory of knowledge development to the area. Finally, I present the findings and thoughts for future research.

  18. Accurate episomal HIV 2-LTR circles quantification using optimized DNA isolation and droplet digital PCR

    OpenAIRE

    Eva Malatinkova; Maja Kiselinova; Pawel Bonczkowski; Wim Trypsteen; Peter Messiaen; Jolien Vermeire; Bruno Verhasselt; Karen Vervisch; Linos Vandekerckhove; Ward De Spiegelaere

    2014-01-01

    Introduction: In HIV-infected patients on combination antiretroviral therapy (cART), the detection of episomal HIV 2-LTR circles is a potential marker for ongoing viral replication. Quantification of 2-LTR circles is based on quantitative PCR or more recently on digital PCR assessment, but is hampered due to its low abundance. Sample pre-PCR processing is a critical step for 2-LTR circles quantification, which has not yet been sufficiently evaluated in patient derived samples. Materials and M...

  19. Squaring the Project Management Circle: Updating the Cost, Schedule, and Performance Methodology

    Science.gov (United States)

    2016-04-30

    measure execution. This paper suggests that the cost, schedule, and performance paradigm, while still effective as a measure of managing programs, needs...acquisition and its relationship to the measures of cost, schedule, and performance—the project management circle (see Figure 1). Rather than use the... management circle. The circle recognizes the interrelationships, necessary equilibrium, and the influencing and balancing effects that these three

  20. 品管圈活动在降低留置胃管患者非计划性拔管率中的应用%Application of quality control circle activities in reducing unplanned extubation of indwelling stomach tube patients

    Institute of Scientific and Technical Information of China (English)

    陈桂兰; 王芬; 戴秀娟; 周红芳

    2014-01-01

    目的:探讨品管圈(QCC)活动在降低留置胃管患者非计划性拔管率中的效果。方法成立品管圈,确定“降低留置胃管患者非计划性拔管率”为主题,通过现状调查、分析原因、拟定对策并实施,比较QCC活动前后2组患者非计划性拔管率。结果 QCC活动后患者非计划性拔管率1.0%低于活动前6.5%,(P<0.05),目标达成率107.8%,进步率84.6%,圈员技能等8个方面得到提高。结论 QCC活动能有效降低留置胃管患者非计划性拔管率,提高护理管理执行力和患者的依从性,值得推广。%Obj ective To invesyigaye yhe effecy of qualiyy conyrol circle (QCC)acyiviyies in reducing unplanned exyubayion of indwelling syomach yube payienys.Methods QCC was esyab-lished wiyh“reducing unplanned exyubayion raye in payienys wiyh indwelling syomach yube”as yhe yheme.Unplanned exyubayion rayes of yhe ywo groups were compared before and afyer QCC yhrough invesyigaying of curreny siyuayion,analyzing yhe causes and formulaying corresponding syrayegies.Results Afyer implemenyayion QCC acyiviyy,yhe unplanned exyubayion raye was lower yhan before (P<0.05).Rayes of yhe yargey compleyion and progress were 107.8%and 84.6%re-specyively,and yhe nurses′skills were improved obviously.Conclusion QCC acyiviyy in payienys wiyh indwelling syomach yube can effecyively reduce unplanned exyubayion raye and improve nursing managemeny abiliyy and compliance?of?payienys,so iy is woryhy of popularizayion.

  1. Studies on Escherichia coli sex factors: evidence that covalent circles exist within cells and the general problem of isolation of covalent circles.

    Science.gov (United States)

    Freifelder, D; Folkmanis, A; Kirschner, I

    1971-03-01

    We examined in detail conditions necessary for making reproducible and for maximizing the amount of deoxyribonucleic acid obtained from a sex factor-containing cell as covalent circles. The results argue that under optimal conditions covalent circles are neither created nor lost during the isolation procedure. The causes of the culture-to-culture variation in recovery of covalent circular deoxyribonucleic acid were investigated but an understanding of this is not yet at hand. Some commonly used conditions which drastically reduce the recovery of covalent circles are described.

  2. Determination of the synthetic hydroxyapatite life circle used in dental practice

    Directory of Open Access Journals (Sweden)

    Teodorović Nevenka

    2012-01-01

    Full Text Available Dental materials are specific materials that were developed as a general materials for specific aplication in oral environment. To determinate the functional properties of this materials, we are obligated to use nonstandard approach and specific methods. In this study, two methodologies of material testing-artificial agging and quantification of visual informations for life circle assessment of hydroxyapatite (Hap based materials, were used. Hap was chemically synthetized which produced the material with high purity and crystallinity. Artificially produced Hap is used in stomatology for repair of bone tissue, as a filling for periodontal defects, and as a preservative augmentation for alveolar ridges. In the mean time those materials are used for definitive root canal obturation in endodontic therapy procedure as an apical plug or as complete filling material. This research was focused on the analysis of the bonding properties of the Hap based materials to the root canal walls. The methodology of artificial agging was used together with the quantification of visual informations in purpose to quantify the Hap bonding properties and bonding quality. Experiments were done in-vitro, with the artificia saliva as the agressive agent. The experimental tooths were analyzed by the high resolution optical microscope for the morphological characterisation of the bonding layer. The model for the bond life circle assessment was developed. Hap based materials proved that has favorable properties for the dental use. The presented results proved that the combination of two methodologies (artificial agging and quantification of visual informations could be used as the tool for analyzing the material-dentine interaction.

  3. Are prostatitis symptoms associated with an isoprostane-mediated vicious circle?

    Science.gov (United States)

    Türk, Silver; Kullisaar, Tiiu

    2011-11-01

    Prostatitis is a disease that seriously affects the quality of patients' life. In the majority of cases, chronic prostatitis (chronic pelvic pain syndrome--CPPS) has an unclear pathogenesis. Anti-inflammatory and anti-infectious treatments have remained controversial. According to the latest research, prostatitis has been associated with oxidative stress (OxS) and/or OxS-related genetic polymorphisms. We have observed that prostatitis patients have systemic OxS in case of inflammation and pain. We propose a new explanation for the role of OxS in the pathogenesis of prostatitis and describe the putative OxS-related pathways in detail. The neural vicious circle starts by activation of primary sensory afferents. Glutamate mediates the signal to the neurons in the dorsal horn of the spinal cord, and facilitates calcium influx into their mitochondria. The latter causes an increased production of superoxide radicals. If the superoxide production is not effectively controlled by mitochondrial superoxide dismutase (Mn-SOD), then superoxide leads to OxS and lipid peroxidation. Consequent release of electrophilic lipid peroxidation products (LPP) from dorsal horn of the spinal cord causes pain by activating the primary sensory afferents, again. Additional LPP-mediated causes of pain include glutathione depletion and neuron sensitisation by isoprostanes. Excretion of LPP into urine may exert positive feedback as well. Currently, different information exists about chronic prostatitis (inflammation, pain, oxidative stress, neural sensitisation, lower urinary tract symptoms). The clear links between these data are actually absent. We propose that vicious circle based on LPP, especially isoprostanes, is the linking mechanism. Copyright © 2011 Elsevier Ltd. All rights reserved.

  4. The interpersonal circle as a heuristic model for interpersonal research.

    Science.gov (United States)

    Lorr, M

    1996-04-01

    In this article, I review major advances in the development of the interpersonal circle and its measurement, as delineated by Timothy Leafy (1957) and his colleagues. In my early work (Lorr & McNair, 1963, 1965), an interpersonal Behavior Inventory consisting of manifest behavioral statements was constructed. The 14 categories were found to fit a circular order in several samples. Studies using LaForge and Suczek's (1955) Interpersonal Check List, and Wiggins's (1979) Interpersonal Adjective Scales further established the value of Leary's conceptions and extended them. Several major theorists, researchers, and clinicians including Benjamin, Carson, Horowitz, Kiesler, and Wiggins have been inspired by Leary and, in many cases, have extended his ideas in ways not originally envisioned. Recent research (e.g., Hofstee, de Raad, & Goldberg, 1992; Millon, 1987) demonstrated the pertinence of the interpersonal conception of personality to the 5-factor model and personality disorders.

  5. Two personification strategies for solving circles packing problem

    Institute of Scientific and Technical Information of China (English)

    黄文奇[1; 许如初[2

    1999-01-01

    Two personification strategies are presented, which yield a highly efficient and practical algorithm for solving one of the NP hard problems——circles packing problem on the basis of the quasi-physical algorithm. A very clever polynomial time complexity degree approximate algorithm for solving this problem has been reported by Dorit S.Hochbaum and Wolfgang Maass in J. ACM. Their algorithm is extremely thorough-going and of great theoretical significance. But, just as they pointed out, their algorithm is feasible only in conception and even for examples frequently encountered in everyday life and of small scale, it is the case more often than not that up to a million years would be needed to perform calculations with this algorithm. It is suggested toward the end of their paper that a heuristic algorithm of higher practical effectiveness should be sought out. A direct response to their suggestion is intented to provide.

  6. Application of digital holography to circle flow bed boiler measurement

    Institute of Scientific and Technical Information of China (English)

    PU Shiliang; Denis Lebrun; WANG Qinghui; CEN Kefa; REN Kuanfang

    2007-01-01

    The spatial distribution of particles in the boiler is very important in the study on the circle flow bed boiler (CFB). Digital in-line holography technique was applied to obtain the spatial and diameter distribution of the particles inside the boiler. A HE-NE laser was used to illuminate the particles inside the CFB through two glass windows and the in-line diffraction pattern was recorded by a CCD camera. The diffraction can be interpreted as a convolution between a family of wavelet functions and the object function. So the three-dimensional (3D) images of the particles in the two-phase flow were reconstructed by the convolution between diffraction pattern and wavelet functions. The particle diameters and 3D coordinates were calculated from the reconstructed 3D images by a series of image-processing methods, followed by a discussion of the experimental results.

  7. Planar maps, circle patterns and 2d gravity

    CERN Document Server

    David, Francois

    2013-01-01

    Via circle pattern techniques, random planar triangulations (with angle variables) are mapped onto Delaunay triangulations in the complex plane. The uniform measure on triangulations is mapped onto a conformally invariant spatial point process. We show that this measure can be expressed as: (1) a sum over 3-spanning-trees partitions of the edges of the Delaunay triangulations; (2) the volume form of a K\\"ahler metric over the space of Delaunay triangulations, whose prepotential has a simple formulation in term of ideal tessellations of the 3d hyperbolic space; (3) a discretized version (involving finite difference complex derivative operators) of Polyakov's conformal Fadeev-Popov determinant in 2d gravity; (4) a combination of Chern classes, thus also establishing a link with topological 2d gravity.

  8. Circle Hough transform implementation for dots recognition in braille cells

    Science.gov (United States)

    Jacinto Gómez, Edwar; Montiel Ariza, Holman; Martínez Sarmiento, Fredy Hernán.

    2017-02-01

    This paper shows a technique based on CHT (Circle Hough Transform) to achieve the optical Braille recognition (OBR). Unlike other papers developed around the same topic, this one is made by using Hough Transform to process the recognition and transcription of Braille cells, proving CHT to be an appropriate technique to go over different non-systematics factors who can affect the process, as the paper type where the text to traduce is placed, some lightning factors, input image resolution and some flaws derived from the capture process, which is realized using a scanner. Tests are performed with a local database using text generated by visual nondisabled people and some transcripts by sightless people; all of this with the support of National Institute for Blind People (INCI for their Spanish acronym) placed in Colombia.

  9. Camera calibration approach using circle-square-combined target

    Institute of Scientific and Technical Information of China (English)

    Fuqiang Zhou; Yexin Wang; Yi Cui; Haishu Tan

    2012-01-01

    Calibrating a small field camera is a challenging task because the traditional target with visible feature points that fit the limited space is difficult and costly to manufacture. We demonstrate a novel combined target used in camera calibration. The tangent points supplied by one circle located at the center of a square are used as invisible features, and the perspective projection invariance is proved. Both visible and invisible features extracted by the proposed feature extraction algorithm are used to solve the calibration. The target supplies a sufficient number of feature points to satisfy the requirements of calibration within a limited space. Experiments show that the approach can achieve high robustness and considerable accuracy. This approach has potential for computer vision applications particularly in small fields of view.%Calibrating a small field camera is a challenging task because the traditional target with visible feature points that fit the limited space is difficult and costly to manufacture.We demonstrate a novel combined target used in camera calibration.The tangent points supplied by one circle located at the center of a square are used as invisible features,and the perspective projection invariance is proved.Both visible and invisible features extracted by the proposed feature extraction algorithm are used to solve the calibration.The target supplies a sufficient number of feature points to satisfy the requirements of calibration within a limited space.Experiments show that the approach can achieve high robustness and considerable accuracy.This approach has potential for computer vision applications particularly in small fields of view.

  10. Dynamic Investigation of Triangles Inscribed in a Circle, Which Tend to an Equilateral Triangle

    Science.gov (United States)

    Stupel, Moshe; Oxman, Victor; Sigler, Avi

    2017-01-01

    We present a geometrical investigation of the process of creating an infinite sequence of triangles inscribed in a circle, whose areas, perimeters and lengths of radii of the inscribed circles tend to a limit in a monotonous manner. First, using geometrical software, we investigate four theorems that represent interesting geometrical properties,…

  11. Comparing Interactions in Literature Circles in Both Online and in Class Discussions

    Science.gov (United States)

    Skeen, Christel Ghrist

    2014-01-01

    Discourse analysis of literature circles can lead educators to understand the different types of interactions taking place as students talk about text. Social and academic interactions exist in both face-to-face and online discussions of reading material. This study examines two different settings of literature circles and compares interactions of…

  12. Circle Time: An Exploratory Study of Activities and Challenging Behavior in Head Start Classrooms

    Science.gov (United States)

    Zaghlawan, Hasan Y.; Ostrosky, Michaelene M.

    2011-01-01

    The purpose of this descriptive study was to examine circle time activities in eight Head Start classrooms. A total of 7 h of observations occurred in eight classrooms. Songs and academic activities were the most frequently occurring activities. Challenging behavior during circle time also was examined. The three activities with the highest…

  13. The Revival of Research Circles: Meeting the Needs of Modern Aging and the Third Age

    Science.gov (United States)

    Ostlund, Britt

    2008-01-01

    This article provides evidence that it is worthwhile to reconsider the traditional research circle method as a means of involving people in the third age in fulfilling their needs to participate in learning activities and make their voices heard. The findings are based on three cases of research circles consistently driven by the interests of the…

  14. Migraine without aura is not associated with incomplete circle of Willis

    DEFF Research Database (Denmark)

    Ezzatian-Ahar, Shabnam; Amin, Faisal Mohammad; Obaid, Hayder Ghani

    2014-01-01

    the prevalence of incomplete circle of Willis in migraineurs and controls. In the present study we compared the prevalence of incomplete circle of Willis in female migraine patients without aura to female healthy non-migraine controls.Using 3-Tesla magnetic resonance angiography we recorded three...

  15. A surface containing a line and a circle through each point is a quadric

    KAUST Repository

    Nilov, Fedor K.

    2012-06-20

    We prove that a surface in 3-dimensional Euclidean space containing a line and a circle through each point is a quadric. We also give some particular results on the classification of surfaces containing several circles through each point. © 2012 Springer Science+Business Media B.V.

  16. When Two Circles Determine a Triangle. Discovering and Proving a Geometrical Condition in a Computer Environment

    Science.gov (United States)

    Metaxas, Nikolaos; Karagiannidou, Andromachi

    2010-01-01

    Visualization of mathematical relationships enables students to formulate conjectures as well as to search for mathematical arguments to support these conjectures. In this project students are asked to discover the sufficient and necessary condition so that two circles form the circumscribed and inscribed circle of a triangle and investigate how…

  17. Non-positively curved graph manifolds are virtually fibered over the circle

    OpenAIRE

    2001-01-01

    In this note we prove that any closed graph manifold admitting a metric of non-positive sectional curvature (NPC-metric) has a finite cover, which is fibered over the circle. An explicit criterion to have a finite cover, which is fibered over the circle, is presented for the graph manifolds of certain class.

  18. Sufficient Conditions for Dynamical Output Feedback Stabilization Via the Circle Criterion

    OpenAIRE

    2003-01-01

    This paper suggests sufficient conditions for asymptotically stable dynamical output feedback controller design based on the circle criterion. It is shown that a dynamic output feedback stabilization problem with impending problems of finite escape time, previously attacked by observer-based design, can be successfully solved using circle criterion design. Stability of the closed-loop system is global and robust to parameter uncertainty.

  19. Schwarz’s lemma for the circle packings with the general combinatorics

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    Rodin (1987) proved the Schwarz’s lemma analog for the circle packings based on the hexagonal combinatorics. In this paper, we prove the Schwarz’s lemma for the circle packings with the general combinatorics and our proof is more simpler than Rodin’s proof. At the same time, we obtain a rigidity property for those packings with the general combinatorics.

  20. Health Literacy Study Circles[superscript +]. Introduction: Overview, Planning, and Facilitation Tips

    Science.gov (United States)

    Rudd, Rima; Soricone, Lisa; Santos, Maricel; Zobel, Emily; Smith, Janet

    2005-01-01

    A Health Literacy Study Circle[superscript +] is a multi-session professional development activity for adult education practitioners, conducted by a facilitator. All the information and materials required to conduct each Health Literacy Study Circle[superscript +] is presented in two parts: this Introduction and the "Facilitator's Guide" for each…

  1. A new method for fast circle detection in a complex background image

    Science.gov (United States)

    Wu, Meijun; Yang, Jie; Sun, Yadong

    2011-11-01

    A new method for circle detection, Hough gradient clustering method, has been developed in this paper. By using gradient direction angle to find the diameter of a circle, the new method can rapidly detect the circle in a complex background. The crucial steps in this method are the feature extraction and the clustering of the points which have the same gray direction angle and are collinear along the gradient direction. The application of the two-to-one space mapping and 1-2Hough transform can further reduce the useless calculation in the process of circle detection. Comparing with the Hough gradient method in OpenCV, the newly developed method shows a higher efficiency of circle detection in a complex background image as well as a great improvement in the anti-noise ability.

  2. Closed circle DNA algorithm of change positive-weighted Hamilton circuit problem

    Institute of Scientific and Technical Information of China (English)

    Zhou Kang; Tong Xiaojun; Xu Jin

    2009-01-01

    Chain length of closed circle DNA is equal. The same closed circle DNA's position corresponds to different recognition sequence, and the same recognition sequence corresponds to different foreign DNA segment, so closed circle DNA computing model is generalized. For change positive-weighted Hamilton circuit problem, closed circle DNA algorithm is put forward. First, three groups of DNA encoding are encoded for all arcs, and deck groups are designed for all vertices. All possible solutions axe composed. Then, the feasible solutions axe filtered out by using group detect experiment, and the optimization solutions are obtained by using group insert experiment and electrophoresis experiment. Finally, all optimization solutions are found by using detect experiment. Complexity of algorithm is concluded and validity of DNA algorithm is explained by an example. Three dominances of the closed circle DNA algorithm are analyzed, and characteristics and dominances of group delete experiment axe discussed.

  3. Title:How to Make Use of Quality Control Circle in Marketing of Communication Industry Application Service%QC小组活动在通信行业应用的规模推广中如何发挥作用

    Institute of Scientific and Technical Information of China (English)

    何虎

    2012-01-01

      Industry application service is the important development orientation of marketing for the communication industry when it is in transitional period, the quality of industry application service is the key factor for the marketing and competition. Now,QCC provides a scientific method of the management of enterprise, and we can improve the quality of products and services by QCC. In this article, we discuss how to use the QCC in industry application service of communication,and research the actual way which improve the quality of service,enhance the ability of competitiveness in the marketing of communication industry.%  行业应用服务在通信行业的过渡期是重要发展方向,行业应用服务的质量是市场营销和竞争的关键因素。当前, QCC提供了科学的企业管理方法,通过QCC,能够提高产品和服务质量。文章将讨论在通信行业应用服务中如何使用QCC,并研

  4. 基于Radon变换的高精度Mark点圆定位算法的改进%The Improvement Algorithm of High Precision Mark Points Detecting Circle Location Based on Radon Transform

    Institute of Scientific and Technical Information of China (English)

    王海波; 周浩; 柳宁

    2015-01-01

    The Mark points detecting circle location technology is widely used in the industry application of printing, the electronic manufacturing,the Laser machining and so on. Manufacturing cost would be increased if only rising the printing quality of the mark points circle . The precision of detecting circle location can be improved by using the algorithm which eliminating effects on mark points circle edge defectives and circle lacks. After the mark points circle edge extracting,using the Radon transform employed to transmute the circle f (x,y ) to f (ρ,θ) , finding the peak point at the every and compare this point value with the corresponding value of the standard circle,judge the point is or not noise by the value difference large then a threshold value or not. Then use minimal two remaining method fit the real circle edge points. The experiments prove that the improvement vision circle location algorithm has more location precision and stability.%Mark点的圆定位技术在印刷、电子制造、激光加工等行业有着广泛的应用。为提高定位精度而一味地提高Mark点的印刷质量会带来成本的上升,通过算法改进消除Mark点边缘瑕疵和圆缺省的影响,可以提高定位精度。在提取Mark点圆图像的边缘后,采用Radon变换将定位圆 f (x,y )变换到 f (ρ,θ),通过抽取每一θ角上的ρ的最值,并与标准圆对应的最值比较,按一个设定的阀值判定是否噪声,从而区分定位圆的真实边缘点和噪声,再通过最小二剩法对真实边缘点拟合求出圆心。实验证明,本改进方法针对有缺陷的定位圆有较高的定位精度与计算稳定性。

  5. The role of Circle women in curbing violence against women and girls in Africa

    Directory of Open Access Journals (Sweden)

    Sylvia Owusu-Ansah

    2016-07-01

    Full Text Available The article looks at the role Circle of Concerned African Women Theologians (the Circle have played in the struggle to end or reduce the rate at which violence against women and girls occurs in West Africa by highlighting the contributions of older Circle women, especially the initiator of the Circle, Mercy Amba Oduyoye. The initiator of the Circle and other older Circle women have left a remarkable legacy that needs to continue by the current and future generations of the Circle. The background information examines the leadership and mentorship of Mercy Amba Oduyoye and the impact she has made in the lives of African women. The essay then looks at the types of violence that women face in West Africa with the specific contributions of Circle women in the struggle to end violence against women and girls. It then argues that Circle women have played very significant roles both in setting the pace and giving the platform for women activities to minimise gender-based violence against women and girls. Circle women have written and presented papers that have addressed many challenges including HIV and/or AIDS, Girl Child trafficking, Marriage of Minors, and almost all kinds of violence against women and girls. Currently, religious violence threatens the fabric of African nations causing insecurity and panic, women and girls being the most vulnerable. The challenge to the present and future Circle members is to contribute in significant ways towards religious harmony in Africa and beyond. The Circle acknowledges the leadership role of women and encourages them to spearhead the liberation of women as well as empower them to be able to aspire to get to the top or become independent. No one understands what someone else feels better than the person experiencing the ordeal. Women can better understand what they go through and also have the passion to strive towards liberation.Intradisciplinary and/or interdisciplinary implications: In this article, the

  6. Kinetics of the forelimb in horses circling on different ground surfaces at the trot.

    Science.gov (United States)

    Chateau, Henry; Camus, Mathieu; Holden-Douilly, Laurène; Falala, Sylvain; Ravary, Bérangère; Vergari, Claudio; Lepley, Justine; Denoix, Jean-Marie; Pourcelot, Philippe; Crevier-Denoix, Nathalie

    2013-12-01

    Circling increases the expression of distal forelimb lameness in the horse, depending on rein, diameter and surface properties of the circle. However, there is limited information about the kinetics of horses trotting on circles. The aim of this study was to quantify ground reaction force (GRF) and moments in the inside and outside forelimb of horses trotting on circles and to compare the results obtained on different ground surfaces. The right front hoof of six horses was equipped with a dynamometric horseshoe, allowing the measurement of 3-dimensional GRF, moments and trajectory of the centre of pressure. The horses were lunged at slow trot (3 m/s) on right and left 4 m radius circles on asphalt and on a fibre sand surface. During circling, the inside forelimb produced a smaller peak vertical force and the stance phase was longer in comparison with the outside forelimb. Both right and left circling produced a substantial transversal force directed outwards. On a soft surface (sand fibre), the peak transversal force and moments around the longitudinal and vertical axes of the hoof were significantly decreased in comparison with a hard surface (asphalt). Sinking of the lateral or medial part of the hoof in a more compliant surface enables reallocation of part of the transversal force into a proximo-distal force, aligned with the limb axis, thus limiting extrasagittal stress on the joints.

  7. Surface kinematics of periglacial sorted circles using Structure-from-Motion technology

    Directory of Open Access Journals (Sweden)

    A. Kääb

    2013-12-01

    Full Text Available Sorted soil circles are a conspicuous form of periglacial patterned ground. Numerical modelling suggests that these features develop from a convection-like circulation of material in the active layer of permafrost. The related iterative burying and resurfacing of material is believed to play an important role in the soil carbon cycle of high latitudes. The connection of sorted circles to permafrost conditions and its changes over time make these ground forms to a potential paleoclimatic indicator. In this study we apply the photogrammetric Structure-from-Motion technology (SfM to large sets of overlapping terrestrial photos taken in Augusts 2007 and 2010 over three sorted circles at Kvadehuksletta, Western Spitsbergen. We retrieve repeat digital elevation models (DEMs and orthoimages with millimetre-resolution and accuracy. Changes in microrelief over the three years are obtained from DEM-differencing and horizontal displacement fields from tracking features between the orthoimages. In the inner domains of the circles, consisting of fines, material moves radially outside with horizontal surface speeds of up to 2 cm yr−1. The outer circle ridges consist of coarse stones that displace towards the inner circle domain at similar rates. A number of substantial deviations from this overall radial symmetry, both in horizontal displacements and in microrelief, shed new light on the potential spatio-temporal evolution of sorted soil circles, and periglacial patterned ground in general.

  8. Modelling of the toe trajectory during normal gait using circle-fit approximation.

    Science.gov (United States)

    Fang, Juan; Hunt, Kenneth J; Xie, Le; Yang, Guo-Yuan

    2016-10-01

    This work aimed to validate the approach of using a circle to fit the toe trajectory relative to the hip and to investigate linear regression models for describing such toe trajectories from normal gait. Twenty-four subjects walked at seven speeds. Best-fit circle algorithms were developed to approximate the relative toe trajectory using a circle. It was detected that the mean approximation error between the toe trajectory and its best-fit circle was less than 4 %. Regarding the best-fit circles for the toe trajectories from all subjects, the normalised radius was constant, while the normalised centre offset reduced when the walking cadence increased; the curve range generally had a positive linear relationship with the walking cadence. The regression functions of the circle radius, the centre offset and the curve range with leg length and walking cadence were definitively defined. This study demonstrated that circle-fit approximation of the relative toe trajectories is generally applicable in normal gait. The functions provided a quantitative description of the relative toe trajectories. These results have potential application for design of gait rehabilitation technologies.

  9. Vienna Circle and Logical Analysis of Relativity Theory

    CERN Document Server

    Andréka, H; Németi, I; Németi, P; Székely, G

    2011-01-01

    In this paper we present some of our school's results in the area of building up relativity theory (RT) as a hierarchy of theories in the sense of logic. We use plain first-order logic (FOL) as in the foundation of mathematics (FOM) and we build on experience gained in FOM. The main aims of our school are the following: We want to base the theory on simple, unambiguous axioms with clear meanings. It should be absolutely understandable for any reader what the axioms say and the reader can decide about each axiom whether he likes it. The theory should be built up from these axioms in a straightforward, logical manner. We want to provide an analysis of the logical structure of the theory. We investigate which axioms are needed for which predictions of RT. We want to make RT more transparent logically, easier to understand, easier to change, modular, and easier to teach. We want to obtain deeper understanding of RT. Our work can be considered as a case-study showing that the Vienna Circle's (VC) approach to doing...

  10. Using great circles to understand motion on a rotating sphere

    Science.gov (United States)

    McIntyre, D. H.

    2000-12-01

    Motion observed in a rotating frame of reference is generally explained by invoking inertial forces. While this approach simplifies some problems, there is often little physical insight into the motion, in particular into the effects of the Coriolis force. To aid in the understanding of three-dimensional inertial forces, motion on a rotating sphere is considered from the points of view of an inertial observer and of an observer fixed on the sphere. The inertial observer observes the motion to be along a great circle fixed in the inertial frame, in analogy with simple straight-line motion in the two-dimensional case. This simple "straight-line" viewpoint of the inertial observer is reconciled qualitatively and quantitatively with the view of the rotating observer that requires inertial forces in order to account for the motion. Through a succession of simple examples, the Coriolis and centrifugal effects are isolated and illustrated, as well as effects due to the curvilinear nature of motion on a sphere.

  11. Taking a literature circles approach to teach Academic English

    Directory of Open Access Journals (Sweden)

    Graham-Marr Alastair

    2016-01-01

    Full Text Available Literature circles (LC, an activity framework for classroom discussion, has been adapted for EFL classes to help students engage more deeply with reading texts. In this approach, students read texts outside of class, and discuss the texts in class, using a specified discussion framework. Originally developed for L1 classes as a tool for teaching literature, LC has been adapted for EFL classes, not only to help develop reading skills, but also to help students develop their discussion skills. However, to date, many adaptations of LC have relied on graded fiction as source material, which is not always appropriate for tertiary education. Feeling pressure to match course content with the labour market needs of our contemporary global society, English departments are increasingly being asked to include more academic content in their classes. This requires that non-fiction be used as source material. This preliminary study examines student perceptions of an LC class using non-fiction as source material. The subjects of this short, qualitative, pilot study were engineering students at a university in Japan. Procedures of the class and the issues that emerged are discussed.

  12. Is "circling" behavior in humans related to postural asymmetry?

    Directory of Open Access Journals (Sweden)

    Emma Bestaven

    Full Text Available In attempting to walk rectilinearly in the absence of visual landmarks, persons will gradually turn in a circle to eventually become lost. The aim of the present study was to provide insights into the possible underlying mechanisms of this behavior. For each subject (N = 15 six trajectories were monitored during blindfolded walking in a large enclosed area to suppress external cues, and ground irregularities that may elicit unexpected changes in direction. There was a substantial variability from trial to trial for a given subject and between subjects who could either veer very early or relatively late. Of the total number of trials, 50% trajectories terminated on the left side, 39% on the right side and 11% were defined as "straight". For each subject, we established a "turning score" that reflected his/her preferential side of veering. The turning score was found to be unrelated to any evident biomechanical asymmetry or functional dominance (eye, hand.... Posturographic analysis, used to assess if there was a relationship between functional postural asymmetry and veering revealed that the mean position of the center of foot pressure during balance tests was correlated with the turning score. Finally, we established that the mean position of the center of pressure was correlated with perceived verticality assessed by a subjective verticality test. Together, our results suggest that veering is related to a "sense of straight ahead" that could be shaped by vestibular inputs.

  13. End of the line to build a circle

    CERN Multimedia

    2006-01-01

    The installation of the cryogenic distribution line in the LHC tunnel is finally finished! All the sectors have undergone pressure and helium leak tests at room temperature, and one complete sector was cold tested in cryogenic conditions. Some of the QRL team in UJ22 of the LHC tunnel, where the last sector of the cryogenic distribution line was installed.It must have been a joyous moment in UJ22 of the LHC tunnel (near Point 2, Saint Genis Pouilly) on 19 October. This was where the last external weld of the cryogenic distribution line, also known as QRL, was made, thus completing the full distribution ring. The QRL is a circle built in 8 sectors, each approximately 3 km in length. It will circulate helium in liquid and gas phases, at different temperatures and pressures, to provide the cryogenic conditions for the superconducting magnets in the LHC tunnel. The last sector installed (sector 1-2) passed the pressure and helium leak tests at room temperature on 28 October. As part of the warm test, each sector...

  14. Utilization of the Native American Talking Circle to teach incident command system to tribal community health representatives.

    Science.gov (United States)

    Granillo, Brenda; Renger, Ralph; Wakelee, Jessica; Burgess, Jefferey L

    2010-12-01

    The public health workforce is diverse and encompasses a wide range of professions. For tribal communities, the Community Health Representative (CHR) is a public health paraprofessional whose role as a community health educator and health advocate has expanded to become an integral part of the health delivery system of most tribes. CHRs possess a unique set of skills and cultural awareness that make them an essential first responder on tribal land. As a result of their distinctive qualities they have the capability of effectively mobilizing communities during times of crisis and can have a significant impact on the communities' response to a local incident. Although public health emergency preparedness training is a priority of federal, state, local and tribal public health agencies, much of the training currently available is not tailored to meet the unique traits of CHRs. Much of the emergency preparedness training is standardized, such as the Federal Emergency Management Agency (FEMA) Training Programs, and does not take into account the inherent cultural traditions of some of the intended target audience. This paper reports on the use of the Native American Talking Circle format as a culturally appropriate method to teach the Incident Command System (ICS). The results of the evaluation suggest the talking format circle is well received and can significantly improve the understanding of ICS roles. The limitations of the assessment instrument and the cultural adaptations at producing changes in the understanding of ICS history and concepts are discussed. Possible solutions to these limitations are provided.

  15. Topography of arterial circle of the brain in Egyptian spiny mouse (Acomys cahirinus, Desmarest).

    Science.gov (United States)

    Szczurkowski, A; Kuchinka, J; Nowak, E; Kuder, T

    2007-04-01

    Using stained acryl latex-injected techniques, the arterial circle of the brain in Acomys cahirinus Desmarest was studied. Results revealed an important individual variability of investigated structure. Three morphological variants were found: (1) the lack of typical arterial circle--opened in front and the back side, (2) partial opened at the back side, (3) completely closed arterial circle. This finding is opposed to many species of mammals, including rodents, and especially laboratory mouse. In our point of view, it seems to be a specific character.

  16. Constructing knowledge about the trigonometric functions and their geometric meaning on the unit circle

    Science.gov (United States)

    Altman, Renana; Kidron, Ivy

    2016-10-01

    Processes of knowledge construction are investigated. A learner is constructing knowledge about the trigonometric functions and their geometric meaning on the unit circle. The analysis is based on the dynamically nested epistemic action model for abstraction in context. Different tasks are offered to the learner. In his effort to perform the different tasks, he has the opportunity to understand the process used to create unit circle representations of trigonometric expressions. The theoretical framework of abstraction in context is used to analyse the evolution of the learner's construction of knowledge in the transition from 'triangle' trigonometry to 'circle' trigonometry.

  17. Vibration characteristic analysis method for the quartz microgyroscope based on the admittance circle

    Science.gov (United States)

    Wang, Haoxu; Dong, Peitao; Xie, Liqiang; Wu, Xuezhong

    2014-03-01

    The vibration characteristic analysis method for a quartz microgyroscope based on the admittance circle is reported in this paper. Admittance theory is introduced and the admittance circle principle is analysed to study the vibration characteristics of the quartz microgyroscope. The prototype gyroscope was fabricated by micro-electromechanical systems (MEMS) technology. The admittance and phase diagram of the work mode were obtained by vibration mode test systems. Then the admittance circle of the work mode was drawn, and the parameter identification of the transfer function between the voltage and current was completed to analyse the vibration characteristics. Therefore, the vibration characteristic analysis method based on the admittance circle can be used to build the transfer function of the quartz microgyroscope, which is helpful for the design of a high performance quartz microgyroscope.

  18. Vibration characteristic analysis method for the quartz microgyroscope based on the admittance circle

    Directory of Open Access Journals (Sweden)

    Haoxu Wang

    2014-02-01

    Full Text Available The vibration characteristic analysis method for a quartz microgyroscope based on the admittance circle is reported in this paper. Admittance theory is introduced and the admittance circle principle is analysed to study the vibration characteristics of the quartz microgyroscope. The prototype gyroscope was fabricated by micro-electromechanical systems (MEMS technology. The admittance and phase diagram of the work mode were obtained by vibration mode test systems. Then the admittance circle of the work mode was drawn, and the parameter identification of the transfer function between the voltage and current was completed to analyse the vibration characteristics. Therefore, the vibration characteristic analysis method based on the admittance circle can be used to build the transfer function of the quartz microgyroscope, which is helpful for the design of a high performance quartz microgyroscope.

  19. College geometry an introduction to the modern geometry of the triangle and the circle

    CERN Document Server

    Altshiller-Court, Nathan

    2007-01-01

    The standard university-level text for decades, this volume offers exercises in construction problems, harmonic division, circle and triangle geometry, and other areas. 1952 edition, revised and enlarged by the author.

  20. Approximating the Euclidean circle in the square grid using neighbourhood sequences

    CERN Document Server

    Farkas, Janos; Nagy, Benedek

    2010-01-01

    Distance measuring is a very important task in digital geometry and digital image processing. Due to our natural approach to geometry we think of the set of points that are equally far from a given point as a Euclidean circle. Using the classical neighbourhood relations on digital grids, we get circles that greatly differ from the Euclidean circle. In this paper we examine different methods of approximating the Euclidean circle in the square grid, considering the possible motivations as well. We compare the perimeter-, area-, curve- and noncompactness-based approximations and examine their realization using neighbourhood sequences. We also provide a table which summarizes our results, and can be used when developing applications that support neighbourhood sequences.

  1. Geologic Provinces of the Circum-Arctic, 2008 (north of the Arctic Circle)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This shapefile includes arcs and polygons that describe U.S. Geological Survey defined 33 geologic provinces of the Circum-Arctic (north of the Arctic Circle). Each...

  2. Endonuclease-rolling circle amplification-based method for sensitive analysis of DNA-binding protein

    Institute of Scientific and Technical Information of China (English)

    Min Li Li; Dong Rui Zhou; Hong Zhao; Jin Ke Wang; Zu Hong Lu

    2009-01-01

    A sensitive approach for the qualitative detection of DNA-binding protein on the microarray was developed. DNA complexes in which a partial duplex region is formed from a biotin-primer and a circle single strand DNA (ssDNA) were spotted on a microarray. The endonuclease recognition site (ERS) and the DNA-binding sites (DBS) were arranged side by side within the duplex region. The working principle of the detection system is described as follows: when the DNA-binding protein capture the DBS, the endonuclease could not attach to the ERS, and the immobilized primer in the DNA complex could be extended along the circle ssDNA by rolling circle amplification (RCA). When no protein protects the DBS, the ERS could be attacked by the endonuclease and subsequently no rolling circle amplification occurs. Thereby we can detect the sequence specific DNA-binding activity with high-sensitivity due to the signal amplification of RCA.

  3. Circle drawing as evaluative movement task in stroke rehabilitation: an explorative study

    Directory of Open Access Journals (Sweden)

    Rietman Johan S

    2011-03-01

    Full Text Available Abstract Background The majority of stroke survivors have to cope with deficits in arm function, which is often measured with subjective clinical scales. The objective of this study is to examine whether circle drawing metrics are suitable objective outcome measures for measuring upper extremity function of stroke survivors. Methods Stroke survivors (n = 16 and healthy subjects (n = 20 drew circles, as big and as round as possible, above a table top. Joint angles and positions were measured. Circle area and roundness were calculated, and synergistic movement patterns were identified based on simultaneous changes of the elevation angle and elbow angle. Results Stroke survivors had statistically significant lower values for circle area, roundness and joint excursions, compared to healthy subjects. Stroke survivors moved significantly more within synergistic movement patterns, compared to healthy subjects. Strong correlations between the proximal upper extremity part of the Fugl-Meyer scale and circle area, roundness, joint excursions and the use of synergistic movement patterns were found. Conclusions The present study showed statistically significant differences in circle area, roundness and the use of synergistic movement patterns between healthy subjects and stroke survivors. These circle metrics are strongly correlated to stroke severity, as indicated by the proximal upper extremity part of the FM score. In clinical practice, circle area and roundness can give useful objective information regarding arm function of stroke survivors. In a research setting, outcome measures addressing the occurrence of synergistic movement patterns can help to increase understanding of mechanisms involved in restoration of post stroke upper extremity function.

  4. A robust circle criterion observer with application to neural mass models

    OpenAIRE

    2012-01-01

    International audience; A robust circle criterion observer is designed and applied to neural mass models. At present, no existing circle criterion observers apply to the considered models, i.e. the required linear matrix inequality is infeasible. Therefore, we generalise available results to derive a suitable estimation algorithm. Additionally, the design also takes into account input uncertainty and measurement noise. We show how to apply the observer to estimate the mean membrane potential ...

  5. Twistor quantization of the space of half-differentiable vector functions on the circle revisited

    Institute of Scientific and Technical Information of China (English)

    SERGEEV; Armen

    2009-01-01

    We discuss the twistor quantization problem for the classical system(Vd,Ad),represented by the phase space Vd,identified with the Sobolev space H 1/2 0 (S1,Rd)of half-differentiable vector functions on the circle,and the algebra of observables Ad,identified with the semi-direct product of the Heisenberg algebra of Vd and the algebra Vect(S1)of tangent vector fields on the circle.

  6. Occlusion of the circle of Willis. Diagnosis by 3D-time of flight MR angiography

    Energy Technology Data Exchange (ETDEWEB)

    Komatsumoto, Satoru; Ushioda, Takakazu; Nara, Masaharu [Ashikaga Red Cross Hospital, Tochigi (Japan)

    1996-08-01

    Magnetic resonance angiograms (MRA) were studied in 7 cases of occlusion of the circle of Willis. MRA successfully demonstrated the vascular obstructions and moyamoya vessels with a positive correlation to the angiographic findings. Leptomeningeal and transdural collateral vessels were also identified with MRA. As MRA is not invasive, it promises to become a valuable alternature to conventional angiography in the diagnosis of occlusion of the circle of Willis. (author)

  7. System-active approach in working with gifted children on the program author's circle of ecological and biological orientation

    Directory of Open Access Journals (Sweden)

    Plonish Julia

    2013-01-01

    Full Text Available The article presents the author's program of environmental and biological circle orientation. It is shown that the basis of the federal state educational standards is a system-activity approach. The result of its application is the development of the child on the basis of Universal Instructional activities. The main advantage of the course by choice "school environmental monitoring 'is his experimental and practice-oriented direction. As a result of the development of the educational program students will learn: about current research in biology, chemistry, ecology, and their practical and moral-ethical significance, the actions of human beings in critical environmental situations, the impact of the natural environment on human health (eg, geochemical characteristics of terrain, the quality of drinking water, dust atmosphere, etc., health-enhancing effects of natural elements (plants, recreational resources, etc..

  8. PID comes full circle: Applications of V(DJ recombination excision circles in research, diagnostics and newborn screening of primary immunodeficiency disorders

    Directory of Open Access Journals (Sweden)

    Menno C. Van Zelm

    2011-05-01

    Full Text Available The vast majority of patients suffering from a primary immunodeficiency (PID have defects in their T- and/or B-cell compartments. Despite advances in molecular diagnostics, in many patients no underlying genetic defect has been identified. B- and T-lymphocytes are unique in their ability to create a receptor by genomic rearrangement of their antigen receptor genes via V(DJ recombination. During this process, stable circular excision products are formed that do not replicate when the cell proliferates. Excision circles can be reliably quantified using real-time quantitative (RQ-PCR techniques. Frequently occurring δREC–ψJα T-cell receptor excision circles (TRECs have been used to assess thymic output and intronRSS–Kde recombination excision circles (KREC to quantify B-cell replication history. In this perspective, we describe how TRECs and KRECs are formed during precursor- T and B cell differentiation, respectively. Furthermore, we discuss new insights obtained with TRECs and KRECs and specifically how these excision circles can be applied to support therapy monitoring, patient classification and newborn screening of PID.

  9. Introspection, empathy, and the semi-circle of mental health.

    Science.gov (United States)

    Kohut, H

    1982-01-01

    Written shortly before his death, Heinz Kohut's last paper opens with a discussion of the paper 'Introspection, empathy, and psychoanalysis', written in 1959, which he presented at the Twenty-fifth Anniversary Meeting of the Chicago Institute for Psychoanalysis. In his first essay on the role of empathy in psychoanalysis, an essay that according to Kohut provided a foundation for many of his subsequent investigations in the field of depth psychology, he advanced the thesis that the introspective-empathic stance of the observer defines the science of psychoanalysis. The author explains that he was moved to propose this operational definition of psychoanalysis twenty-five years before because he felt that the introduction of the psychobiological concept of the drives (as well as various social psychological concepts) had not led to a true integration of psychoanalysis with biology or medicine but to a psychological and moral view of 'Guilty Man' that worked to distort the analyst's perception in the clinical and applied field. Kohut asserts that by defining itself operationally, psychoanalysis can accept itself as psychology, a psychology that studies man in terms of a self attempting to realize the programme laid down in his depth during the span of his life. The final section of the paper is devoted to a re-examination of man's intergenerational relationships in light of the shift Kohut advocates from psychobiology to psychology. The Oedipus complex is not to be understood as the end product of the uninfluentiable conflict of basic opposing instincts but as the result of interferences that impinge on man's development. Acknowledging the mythic power of Freud's formulation of the Oedipus complex, the author offers a dose of mythical counter-magic (to which the 'semi-circle of mental health' in the paper's title refers) and a re-interpretation of the story of King Oedipus. Kohut believes that the essence of human experience is not to be found in the biologically

  10. Anatomical variations of the circle of Willis and cerebrovascular accidents in transitional Albania

    Directory of Open Access Journals (Sweden)

    Edlira Harizi (Shemsi

    2015-12-01

    Full Text Available Aim: The purpose of this study was twofold: i in a case-control design, to determine the relationship between anatomical variations of the circle of Willis and cerebrovascular accidents; ii to assess the association between anatomical variations of the circle of Willis and aneurisms among patients with subarachnoid hemorrhage. Methods: A case-control study was conducted in Albania in 2013-2014, including 100 patients with subarachnoid hemorrhage and 100 controls (individuals without cerebrovascular accidents. Patients with subarachnoid hemorrhage underwent a CT angiography procedure, whereas individuals in the control group underwent a magnetic resonance angiography procedure. Binary logistic regression was used to assess the association between cerebrovascular accidents and the anatomical variations of the circle of Willis. Conversely, Fisher’s exact test was used to compare the prevalence of aneurisms between subarachnoid hemorrhage patients with and without anatomical variations of the circle of Willis. Results: Among patients, there were 22 (22% cases with anatomical variations of the circle of Willis compared with 10 (10% individuals in the control group (P=0.033. There was no evidence of a statistically significant difference in the types of the anatomical variations of the circle of Willis between patients and controls (P=0.402. In age- and-sex adjusted logistic regression models, there was evidence of a significant positive association between cerebrovascular accidents and the anatomical variations of the circle of Willis (OR=1.87, 95%CI=1.03-4.68, P=0.048. Within the patients’ group, of the 52 cases with aneurisms, there were 22 (42.3% individuals with anatomical variations of the circle of Willis compared with no individuals with anatomical variations among the 48 patients without aneurisms (P<0.001. Conclusion: This study provides useful evidence on the association between anatomical variations of the circle of Willis and

  11. Anatomical Variations of the Circle of Willis in Males and Females on 3D MR Angiograms

    Directory of Open Access Journals (Sweden)

    Kawther A. Hafez, Nahla M. Afifi, Fardous Z. Saudi

    2007-03-01

    Full Text Available Objective: The objective of the present work was to study the anatomical variations of the circle of Willis as regard its component vessels and their average diameters in a sample of adult Egyptians and to detect any sex-related differences in these variations. Material and Methods: One hundred and twenty adult patients were observed (60 males and 60 females. They all had problems unrelated to any ischemic or vascular diseases, so they were considered as healthy control, concerning the morphology of the circle of Willis. In addition, ten cadavers' brains were obtained from the Anatomy department, Faculty of Medicine Ain Shams University for examination of the circle of Willis and for detection of any variations. Results: The anatomical variations of the anterior part, posterior part and completeness of the circle were inspected. Also, the diameters of all component vessels were assessed. The results indicated that, the anterior part of the circle was completed in 70% males and 75% females of the study sample. No statistically significant difference was detected between sexes. The most common variant of the anterior part was the single anterior communicating artery followed by the hypoplastic or absent anterior communicating artery. The posterior part of the circle was completed in 44% males and 58% females. The most common variant was the bilateral posterior communicating arteries, followed by the unilateral posterior communicating artery. An entirely complete circle was found only in 45% of the entire population; and it was higher in the females than the in males. The vessels diameters were smaller in the females than in the males, except for the diameter of the posterior communicating artery. Cadavers' examination revealed six cases with complete circle, 3 cases of unilateral fetal posterior communicating and one case of absent posterior communicating artery. Conclusion: The present study showed the amazing great variability of the anatomy of

  12. 降低零公里故障率的PDCA循环%Reduction of Zero-Distance Faults with PDCA Circle

    Institute of Scientific and Technical Information of China (English)

    陈力

    2015-01-01

    零公里故障率高是困扰产品质量提升的顽症之一。降低零公里故障率是一项重要的质量改进活动,运用PDCA循环持续改进,促使质量问题不断减少,直至处于稳定受控状态。%High rate of zero-distance fau lts is one of problems troubling quality improvement. To reduce zero-distance faults is an important quality improvement activity. Constant improvements are made with PDCA circle to reduce product quality issues until product quality is stable and under control.

  13. CIRCLE OF WILLIS: VARIANT FORMS AND THEIR EMBRYOLOGY USING GROSS DISSECTION AND MAGNETIC RESONANCE ANGIOGRAPHY

    Directory of Open Access Journals (Sweden)

    Bishwajeet Saikia

    2014-06-01

    Full Text Available Background: The circle of Willis is a large arterial anastomotic ring present at the base of the brain uniting the internal carotid and the vertebrobasilar systems. Branches from the internal carotid and vertebral arteries anastomose to form an arterial circle in the basal cisterns and then distribute to supply the brain. The anatomy of the circle is known to vary significantly; the vessels may be absent or sufficiently narrowed altering the hemodynamics of the circle of Willis and affecting its role as a collateral route. These variant forms can be correlated to their phylogeny and embryology. Prior knowledge of these variant forms is important in pathologies and treatment (e.g. parent artery occlusion for carotid aneurysms resulting occlusion of carotid and vertebral arteries. Context and purpose: Our study was undertaken to observe and compare the morphology of circle of Willis using two entirely different methods; gross dissection (GD and Magnetic resonance angiography (MRA and to correlate the variant patterns encountered with the possible underlying developmental events. Gross dissection was carried out in 70 human cadavers and equal numbers of MRA’s of healthy individuals were studied retrospectively. Results: Only 31 cases (22.14% presented with a complete circle of Willis, out of which 14 (20% were cadaveric specimen and 17 (24.18% were in MRA group. Unilateral hypoplastic posterior communicating artery was the most common variation observed in our study (19.28%. Conclusions: The wide variation in completeness of the circle of Willis in general population is similar to earlier observations. Review of phylogeny and embryology makes us familiar with variant forms which would be otherwise difficult to recognize and may be misinterpreted. MRA and gross dissection findings despite certain variations are comparable.

  14. Accurate episomal HIV 2-LTR circles quantification using optimized DNA isolation and droplet digital PCR

    Directory of Open Access Journals (Sweden)

    Eva Malatinkova

    2014-11-01

    Full Text Available Introduction: In HIV-infected patients on combination antiretroviral therapy (cART, the detection of episomal HIV 2-LTR circles is a potential marker for ongoing viral replication. Quantification of 2-LTR circles is based on quantitative PCR or more recently on digital PCR assessment, but is hampered due to its low abundance. Sample pre-PCR processing is a critical step for 2-LTR circles quantification, which has not yet been sufficiently evaluated in patient derived samples. Materials and Methods: We compared two sample processing procedures to more accurately quantify 2-LTR circles using droplet digital PCR (ddPCR. Episomal HIV 2-LTR circles were either isolated by genomic DNA isolation or by a modified plasmid DNA isolation, to separate the small episomal circular DNA from chromosomal DNA. This was performed in a dilution series of HIV-infected cells and HIV-1 infected patient derived samples (n=59. Samples for the plasmid DNA isolation method were spiked with an internal control plasmid. Results: Genomic DNA isolation enables robust 2-LTR circles quantification. However, in the lower ranges of detection, PCR inhibition caused by high genomic DNA load substantially limits the amount of sample input and this impacts sensitivity and accuracy. Moreover, total genomic DNA isolation resulted in a lower recovery of 2-LTR templates per isolate, further reducing its sensitivity. The modified plasmid DNA isolation with a spiked reference for normalization was more accurate in these low ranges compared to genomic DNA isolation. A linear correlation of both methods was observed in the dilution series (R2=0.974 and in the patient derived samples with 2-LTR numbers above 10 copies per million peripheral blood mononuclear cells (PBMCs, (R2=0.671. Furthermore, Bland–Altman analysis revealed an average agreement between the methods within the 27 samples in which 2-LTR circles were detectable with both methods (bias: 0.3875±1.2657 log10. Conclusions: 2-LTR

  15. Calculation of the mean circle size does not circumvent the bottleneck of crowding.

    Science.gov (United States)

    Banno, Hayaki; Saiki, Jun

    2012-10-22

    Visually, we can extract a statistical summary of sets of elements efficiently. However, our visual system has a severe limitation in that the ability to recognize an object is remarkably impaired when it is surrounded by other objects. The goal of this study was to investigate whether the crowding effect obstructs the calculation of the mean size of objects. First, we verified that the crowding effect occurs when comparing the sizes of circles (Experiment 1). Next, we manipulated the distances between circles and measured the sensitivity when circles were on or off the limitation of crowding (Experiment 2). Participants were asked to compare the mean sizes of the circles in the left and right visual fields and to judge which was larger. Participants' sensitivity to mean size difference was lower when the circles were located in the nearer distance. Finally, we confirmed that crowding is responsible for the observed results by showing that displays without a crowded object eliminated the effects (Experiment 3). Our results indicate that the statistical information of size does not circumvent the bottleneck of crowding.

  16. Does the Value Circle Exist Within Persons or Only Across Persons?

    Science.gov (United States)

    Borg, Ingwer; Bardi, Anat; Schwartz, Shalom H

    2017-04-01

    This study tests whether the Schwartz (1992) value circle exists within individuals, not only across individuals, thereby providing evidence for the within-person rationale underlying the value circle. We analyze responses from five samples (a representative sample in Britain, a general population sample in the United States, and university students in Britain and Iran) varying in value measures of the Schwartz value theory (SVS, PVQ40, PVQ21). An unfolding model is used to map each person's value profile into a two-dimensional space representing both persons and values. In all samples, clear value circles were found, with values ordered around the circle largely according to the theory. The model also represents most individuals well. The value circle exists within individuals, providing strong support for the underlying within-person rationale for the Schwartz (1992) value theory. The unfolding analysis allows identifying which persons fit the model less well and in which way, identifying how meaningful subgroups differ in their value profiles, and testing whether meaningful subgroups have different value structures. The model opens up many new possibilities for research linking values to other variables.

  17. Automatic Detection and Quantification of WBCs and RBCs Using Iterative Structured Circle Detection Algorithm

    Directory of Open Access Journals (Sweden)

    Yazan M. Alomari

    2014-01-01

    Full Text Available Segmentation and counting of blood cells are considered as an important step that helps to extract features to diagnose some specific diseases like malaria or leukemia. The manual counting of white blood cells (WBCs and red blood cells (RBCs in microscopic images is an extremely tedious, time consuming, and inaccurate process. Automatic analysis will allow hematologist experts to perform faster and more accurately. The proposed method uses an iterative structured circle detection algorithm for the segmentation and counting of WBCs and RBCs. The separation of WBCs from RBCs was achieved by thresholding, and specific preprocessing steps were developed for each cell type. Counting was performed for each image using the proposed method based on modified circle detection, which automatically counted the cells. Several modifications were made to the basic (RCD algorithm to solve the initialization problem, detecting irregular circles (cells, selecting the optimal circle from the candidate circles, determining the number of iterations in a fully dynamic way to enhance algorithm detection, and running time. The validation method used to determine segmentation accuracy was a quantitative analysis that included Precision, Recall, and F-measurement tests. The average accuracy of the proposed method was 95.3% for RBCs and 98.4% for WBCs.

  18. Infraorbital dark circles: A review of the pathogenesis, evaluation and treatment

    Directory of Open Access Journals (Sweden)

    Ivan Vrcek

    2016-01-01

    Full Text Available Infraorbital dark circles represent a common and multifactorial challenge in the world of aesthetic medicine and are the result of a variety of factors including deep facial anatomy, soft tissue changes, as well as contributions from the skin. A variety of treatment options exist, and a customised management strategy can be developed for the particular anatomic changes present. A literature search using MEDLINE and non-MEDLINE sources was performed utilising keywords including: 'Dark circles' 'infraorbital dark circles', 'infraorbital pigment', 'under-eye circles' and 'lower eyelid bags'. A comprehensive review of the literature was performed and the data were assimilated with evidence from our practice. This review provides a detailed discussion of the aetiology, pathogenesis, evaluation and management of infraorbital dark circles. An understanding of the deep and superficial anatomy is crucial to the management of this complex entity. The armamentarium for treatment includes minimally invasive interventions such as makeup and cosmeceuticals, a variety of laser and chemical treatments, fillers and fat transfer, as well as more invasive surgical manoeuvres.

  19. A simple technique for morphological measurement of cerebral arterial circle variations using public domain software (Osiris).

    Science.gov (United States)

    Ansari, Saeed; Dadmehr, Majid; Eftekhar, Behzad; McConnell, Douglas J; Ganji, Sarah; Azari, Hassan; Kamali-Ardakani, Shahab; Hoh, Brian L; Mocco, J

    2011-12-01

    This article describes a straightforward method to measure the dimensions and identify morphological variations in the cerebral arterial circle using the general-purpose software program Osiris. This user-friendly and portable program displays, manipulates, and analyzes medical digital images, and it has the capability to determine morphometric properties of selected blood vessels (or other anatomical structures) in humans and animals. To ascertain morphometric variations in the cerebral arterial circle, 132 brains of recently deceased fetuses, infants, and adults were dissected. The dissection procedure was first digitized, and then the dimensions were measured with Osiris software. Measurements of each vessel's length and external diameters were used to identify and classify morphological variations in the cerebral arterial circle. The most commonly observed anatomical variations were uni- and bilateral hypoplasia of the posterior communicating artery. This study demonstrates that public domain software can be used to measure and classify cerebral arterial circle vessels. This method could be extended to examine other anatomical regions or to study other animals. Additionally, knowledge of variations within the circle could be applied clinically to enhance diagnostic and treatment specificity.

  20. Physiological and lifestyle factors contributing to risk and severity of peri-orbital dark circles in the Brazilian population*

    Science.gov (United States)

    Matsui, Mary S; Schalka, Sérgio; Vanderover, Garrett; Fthenakis, Christina G.; Christopher, J; Bombarda, Patricia Camarano Pinto; Bueno, Juliana Regina; Viscomi, Bianca Lenci Inácio; Bombarda Júnior, Mário Sérgio

    2015-01-01

    BACKGROUND Peri-orbital dark circles are a cosmetic concern worldwide, and have been attributed to hyperpigmentation from allergy or atopic dermatitis, blood stasis, structural shadowing effects, and a thin epidermis/dermis under the eye. It is of interest to better understand lifestyle and demographic risk factors and the relative impact of melanin, blood and epidermal/dermal factors on the severity of Peri-orbital dark circles. OBJECTIVE To compare by non-invasive imaging the impact of biological factors to a visual grading scale for Peri-orbital dark circles, and test the correlation of various demographic factors with Peri-orbital dark circles. METHODS Subjects completed a lifestyle and health survey, and Peri-orbital dark circles severity was evaluated using standardized photographs. Hyperspectral image analysis was used to assess the contributions of melanin, blood volume, degree of blood oxygen saturation, and dermal scattering. RESULTS Family history was the most significant risk factor for Peri-orbital dark circles. The average age of onset was 24 years, and earlier onset correlated with higher severity scores. Asthma was significantly associated with Peri-orbital dark circles scores, but self-reported allergy was not. In this study, sleep was not correlated with Peri-orbital dark circles scores. Hyperspectral imaging indicated that melanin was the dominant correlate for Peri-orbital dark circles severity, while oxygen saturation was secondary. The difference between under-eye and cheek measurements for ∆L*and ∆E* were the most significant instrumental parameters correlated with visual assessment of Peri-orbital dark circles severity. CONCLUSION Although typically associated with lack of sleep, risk of Peri-orbital dark circles is primarily hereditary. The main factors contributing to the appearance of Peri-orbital dark circles are melanin and (deoxygenated) blood. PMID:26375218

  1. THE QUALITY OF GROWTH: PERAN TEKNOLOGI DAN INVESTASI HUMAN CAPITAL SEBAGAI PEMACU PERTUMBUHAN EKONOMI BERKUALITAS

    Directory of Open Access Journals (Sweden)

    P Eko Prasetyo

    2012-01-01

    Full Text Available In the process of developing economy in a whole and continuously, the macro economy stability of acountry is an essential prerequisite for producing a quality economic growth. For achieving the qualityeconomic growth, there should be a continuous capital human investment and the use of continuousscience and technology (IPTEK. The process of developing economy will be able to transform thesociety condition from vicious circle to virtuous circle condition if the growth of economy is qualified..Keywords: Quality of growth; human capital, technology and virtuous circle.

  2. An algorithm for Path planning with polygon obstacles avoidance based on the virtual circle tangents

    Directory of Open Access Journals (Sweden)

    Zahraa Y. Ibrahim

    2016-12-01

    Full Text Available In this paper, a new algorithm called the virtual circle tangents is introduced for mobile robot navigation in an environment with polygonal shape obstacles. The algorithm relies on representing the polygonal shape obstacles by virtual circles, and then all the possible trajectories from source to target is constructed by computing the visible tangents between the robot and the virtual circle obstacles. A new method for searching the shortest path from source to target is suggested. Two states of the simulation are suggested, the first one is the off-line state and the other is the on-line state. The introduced method is compared with two other algorithms to study its performance.

  3. An Algorithmic Solution for Computing Circle Intersection Areas and its Applications to Wireless Communications

    CERN Document Server

    Librino, Federico; Zorzi, Michele

    2012-01-01

    A novel iterative algorithm for the efficient computation of the intersection areas of an arbitrary number of circles is presented. The algorithm, based on a trellis-structure, hinges on two geometric results which allow the existence-check and the computation of the area of the intersection regions generated by more than three circles by simple algebraic manipulations of the intersection areas of a smaller number of circles. The presented algorithm is a powerful tool for the performance analysis of wireless networks, and finds many applications, ranging from sensor to cellular networks. As an example of practical application, an insightful study of the uplink outage probability of in a wireless network with cooperative access points as a function of the transmission power and access point density is presented.

  4. On the sum of powered distances to certain sets of points on the circle

    CERN Document Server

    Nikolov, Nikolai

    2011-01-01

    In this paper we consider an extremal problem in geometry. Let $\\lambda$ be a real number and $A$, $B$ and $C$ be arbitrary points on the unit circle $\\Gamma$. We give full characterization of the extremal behavior of the function $f(M,\\lambda)=MA^\\lambda+MB^\\lambda+MC^\\lambda$, where $M$ is a point on the unit circle as well. We also investigate the extremal behavior of $\\sum_{i=1}^nXP_i$, where $P_i, i=1,...,n$ are the vertices of a regular $n$-gon and $X$ is a point on $\\Gamma$, concentric to the circle circumscribed around $P_1...P_n$. We use elementary analytic and purely geometric methods in the proof.

  5. Great circle solution to polarization-based quantum communication (QC) in optical fiber

    Science.gov (United States)

    Nordholt, Jane Elizabeth; Peterson, Charles Glen; Newell, Raymond Thorson; Hughes, Richard John

    2016-03-15

    Birefringence in optical fibers is compensated by applying polarization modulation at a receiver. Polarization modulation is applied so that a transmitted optical signal has states of polarization (SOPs) that are equally spaced on the Poincare sphere. Fiber birefringence encountered in propagation between a transmitter and a receiver rotates the great circle on the Poincare sphere that represents the polarization bases used for modulation. By adjusting received polarizations, polarization components of the received optical signal can be directed to corresponding detectors for decoding, regardless of the magnitude and orientation of the fiber birefringence. A transmitter can be configured to transmit in conjugate polarization bases whose SOPs can be represented as equidistant points on a great circle so that the received SOPs are mapped to equidistant points on a great circle and routed to corresponding detectors.

  6. Mosh pits and Circle pits: Collective motion at heavy metal concerts

    Science.gov (United States)

    Bierbaum, Matthew; Silverberg, Jesse L.; Sethna, James P.; Cohen, Itai

    2013-03-01

    Heavy metal concerts present an extreme environment in which large crowds (~102 -105) of humans experience very loud music (~ 130 dB) in sync with bright, flashing lights, often while intoxicated. In this setting, we find two types of collective motion: mosh pits, in which participants collide with each other randomly in a manner resembling an ideal gas, and circle pits, in which participants run collectively in a circle forming a vortex of people. We model these two collective behaviors using a flocking model and find qualitative and quantitative agreement with the behaviors found in videos of metal concerts. Futhermore, we find a phase diagram showing the transition from a mosh pit to a circle pit as well as a predicted third phase, lane formation.

  7. Orthogonal Laurent polynomials in unit circle, extended CMV ordering and 2D Toda type integrable hierarchies

    CERN Document Server

    Alvarez-Fernandez, Carlos

    2012-01-01

    Orthogonal Laurent polynomials in the unit circle and the theory of Toda-like integrable systems are connected using the Gauss--Borel factorization of a Cantero-Moral-Velazquez moment matrix, which is constructed in terms of a complex quasi-definite measure supported in the unit circle. The factorization of the moment matrix leads to orthogonal Laurent polynomials in the unit circle and the corresponding second kind functions. Jacobi operators, 5-term recursion relations and Christoffel-Darboux kernels, projecting to particular spaces of truncated Laurent polynomials, and corresponding Christoffel-Darboux formulae are obtained within this point of view in a completely algebraic way. Cantero-Moral-Velazquez sequence of Laurent monomials is generalized and recursion relations, Christoffel-Darboux kernels, projecting to general spaces of truncated Laurent polynomials and corresponding Christoffel-Darboux formulae are found in this extended context. Continuous deformations of the moment matrix are introduced and ...

  8. The Kathmandu Declaration: "Life Circle" approach to prevention and care of diabetes mellitus.

    Science.gov (United States)

    Wijesuriya, Mahen; Williams, Rhys; Yajnik, Chittaranjan

    2010-01-01

    To formulate strategies and action plans for the prevention and care of diabetes mellitus as part of the implementation of the International Diabetes Federation (IDF) United Nations Resolution (UNR) 61/225 through a unique concept of a "Life Circle" approach. Consensus following review of evidence available and presented at a meeting convened to achieve the objective co-chaired by the IDF President and President elect and diabetologists from several countries in the IDF regions. The Kathmandu Declaration presents the concept of a "Life Circle" approach to prevention and care of diabetes--a continuum beginning from preconception, pregnancy, infancy and childhood to adult life in an integrated manner. Emphasis is on the benefits on entering the circle at any point and formulates guidelines that could be incorporated in any national diabetes prevention and care programme, indicating the interactive role of all known aetiological factors. Copyright 2009 Elsevier Ireland Ltd. All rights reserved.

  9. "Socratic Circles are a Luxury": Exploring the Conceptualization of a Dialogic Tool in Three Science Classrooms

    Science.gov (United States)

    Copelin, Michelle Renee

    Research has shown that dialogic instruction promotes learning in students. Secondary science has traditionally been taught from an authoritative stance, reinforced in recent years by testing policies requiring coverage. Socratic Circles are a framework for student-led dialogic discourse, which have been successfully used in English language arts and social studies classrooms. The purpose of this research was to explore the implementation process of Socratic Circles in secondary science classes where they have been perceived to be more difficult. Focusing on two physical science classes and one chemistry class, this study described the nature and characteristics of Socratic Circles, teachers' dispositions toward dialogic instruction, the nature and characteristics of student discussion, and student motivation. Socratic Circles were found to be a dialogic support that influenced classroom climate, social skills, content connections, and student participation. Teachers experienced conflict between using traditional test driven scripted teaching, and exploring innovation through dialogic instruction. Students experienced opportunities for peer interaction, participation, and deeper discussions in a framework designed to improve dialogic skills. Students in two of the classrooms showed evidence of motivation for engaging in peer-led discussion, and students in one class did not. The class that did not show evidence of motivation had not been given the same scaffolding as the other two classes. Two physical science teachers and one chemistry teacher found that Socratic Circles required more scaffolding than was indicated by their peers in other disciplines such as English and social studies. The teachers felt that student's general lack of background knowledge for any given topic in physical science or chemistry necessitated the building of a knowledge platform before work on a discussion could begin. All three of the teachers indicated that Socratic Circles were a

  10. Zernike expansion of derivatives and Laplacians of the Zernike circle polynomials.

    Science.gov (United States)

    Janssen, A J E M

    2014-07-01

    The partial derivatives and Laplacians of the Zernike circle polynomials occur in various places in the literature on computational optics. In a number of cases, the expansion of these derivatives and Laplacians in the circle polynomials are required. For the first-order partial derivatives, analytic results are scattered in the literature. Results start as early as 1942 in Nijboer's thesis and continue until present day, with some emphasis on recursive computation schemes. A brief historic account of these results is given in the present paper. By choosing the unnormalized version of the circle polynomials, with exponential rather than trigonometric azimuthal dependence, and by a proper combination of the two partial derivatives, a concise form of the expressions emerges. This form is appropriate for the formulation and solution of a model wavefront sensing problem of reconstructing a wavefront on the level of its expansion coefficients from (measurements of the expansion coefficients of) the partial derivatives. It turns out that the least-squares estimation problem arising here decouples per azimuthal order m, and per m the generalized inverse solution assumes a concise analytic form so that singular value decompositions are avoided. The preferred version of the circle polynomials, with proper combination of the partial derivatives, also leads to a concise analytic result for the Zernike expansion of the Laplacian of the circle polynomials. From these expansions, the properties of the Laplacian as a mapping from the space of circle polynomials of maximal degree N, as required in the study of the Neumann problem associated with the transport-of-intensity equation, can be read off within a single glance. Furthermore, the inverse of the Laplacian on this space is shown to have a concise analytic form.

  11. Angiographic analysis of the circle of wills: comparison between normal and aneurysm groups

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Eun Hye; Suh, Dae Chul; Auh, Yong Ho [Ulsan University College of Medicine, Seoul (Korea, Republic of); Lee, Sang Il [Pochon CHA University College of Medicine, Sungnam (Korea, Republic of)

    1999-02-01

    To evaluate angiographic variations of the circle of Willis in a normal group, and to compare the pattern of these variations between normal and aneurysm groups. We reviewed 220 cases in which subjects had undergone digital subtraction cerebral angiography which showed the circle of Willis in its entirety. One hundred patients were diagnosed as normal, and 110 had an aneurysm. We reviewed the absence or presence and relative size of each segment, and the configuration of the distal basilar artery. Where the circle was complete, we evaluated whether or not the circle was balanced. And we compared the pattern of these variations between the two groups. In the normal group, the most common pattern was a small anterior communicating artery with symmetrically large A1 segments in the anterior circulation(27%) and symmetrically small posterior communication arteries with large P1 segments in the posterior circulation(39%). The anterior half of the circle was complete in 90% of cases, and the posterior half in 63%. In cases in which it was incomplete, there was agenesis of the anterior communicating artery in 9% of cases, of the A1 segment in 1%, of the posterior communicating artery in 36%, and of the P1 segment in 3%. Unilateral absence of the posterior communicating artery and P1 segment was noted in two cases. In the distal basilar artery, symmetric cranial fusion was most common, accounting for 77% of cases. In contrast, incomplete circles with agenesis of the A1 (1% vs 12%, p < .05) or P1 segment (3% vs 10%, p < .05) were more common in the aneurysm group than among normal subjects. Unbalanced types with a size discrepancy between A1 segments(8% vs 18%, p < .05), or posterior communicating arteries equal to or larger than the P1 segment (27% vs 46%, p < .05) were also more common. In the distal basilar artery, symmetric cranial fusion was most common, and accounted for 69% of cases. A complete and balanced circle was more common in the normal group. The most common

  12. Circle of Willis variation in a complex stroke presentation: a case report

    Directory of Open Access Journals (Sweden)

    Young Carolyn A

    2006-03-01

    Full Text Available Abstract Background The impact of circle of Willis anatomical variation upon the presentation of stroke is probably underrecognised. Case presentation A 63-year-old right-handed woman developed a left hemiparesis and right leg weakness sequentially following a road traffic accident (RTA. Despite initial concern about the possibility of cervical spinal cord injury, the final diagnosis was bilateral artery-to-artery embolic cerebral infarction with dominant right internal carotid artery. Conclusion The case illustrates the complex presentation of stroke as a pseudo-cervical cord lesion and the impact of circle of Willis anatomical variation upon the expression of large vessel cerebrovascular disease.

  13. Amplitude variables of circle on the pedagogic pommel horse in gymnastics.

    Science.gov (United States)

    Baudry, Ludovic; Sforza, Chiarella; Leroy, David; Lovecchio, Nicola; Gautier, Geoffroy; Thouvarecq, Régis

    2009-05-01

    The movement amplitude is a key component of numerous elements in gymnastics. The purpose of the present study is to highlight the most pertinent amplitude variable of the circle performed on the pedagogic pommel horse. Twelve gymnasts (6 expert gymnasts vs. 6 nonexpert gymnasts) performed 10 circles on this event. A Vicon 512 system was used to record the 3-dimensional position of 11 markers fixed on the gymnasts. Our results revealed than 4 amplitude variables permitted us to significantly discriminate the levels of performance of the gymnasts (p gymnasts and to measure improvement in movements after specific training.

  14. Empirical Research on the Urban Development Level of Wuhan Urban Circle

    Directory of Open Access Journals (Sweden)

    Yazhou Xiong

    2013-03-01

    Full Text Available The research object of this paper is the nine cities of Wuhan urban circle. Firstly, this paper establishes the comprehensive evaluation indicator system and evaluation model of the urban development level via systems analysis, then makes a PCA (Principal Components Analysis to the original data by means of SPSS; Next, this paper analyzes the worked data via AHP (Analytic Hierarchy Process and comprehensive score and ranking of the nine cities is obtained and the nine cities are divided into three clusters via K-means clustering analysis; Finally, this paper appraises urban development level of Wuhan urban circle.

  15. Circular and linear regression fitting circles and lines by least squares

    CERN Document Server

    Chernov, Nikolai

    2010-01-01

    Find the right algorithm for your image processing applicationExploring the recent achievements that have occurred since the mid-1990s, Circular and Linear Regression: Fitting Circles and Lines by Least Squares explains how to use modern algorithms to fit geometric contours (circles and circular arcs) to observed data in image processing and computer vision. The author covers all facets-geometric, statistical, and computational-of the methods. He looks at how the numerical algorithms relate to one another through underlying ideas, compares the strengths and weaknesses of each algorithm, and il

  16. Investigation of Brain Arterial Circle Malformations Using Electrical Modelling and Simulation

    Directory of Open Access Journals (Sweden)

    Klara Capova

    2006-01-01

    Full Text Available The paper deals with the cerebral arterial system investigation by means of electrical modelling and simulations. The main attention is paid to the brain arterial circle malformations (stenoses and aneurysms and their determination and evaluation by computer-aided methods as tools of a non-invasive diagnostics. The compensation possibilities of brain arterial circle in case of presence of concrete arterial malformations are modelled and simulated. The simulation results of brain arteries blood pressures and volume flow velocities time dependences are presented and discussed under various health conditions.

  17. The Voronoi diagram of circles and its application to the visualization of the growth of particles

    DEFF Research Database (Denmark)

    Anton, François; Mioc, Darka; Gold, Christopher M.

    2009-01-01

    Circles are frequently used for modelling the growth of particle aggregates through the Voronoi diagram of circles, that is a special instance of the Johnson-Mehl tessellation. The Voronoi diagram of a set of sites is a decomposition of space into proximal regions. The proximal region of a site...... is the locus of points closer to that site than to any other one. Voronoi diagrams allow one to answer proximity queries after locating a query point in the Voronoi zone it belongs to. The dual graph of the Voronoi diagram is called the Delaunay graph. In this paper, we first show a necessary and sufficient...

  18. Vicious circles of punishment: a reading of Melanie Klein's Envy and gratitude.

    Science.gov (United States)

    Smith, Henry F

    2008-01-01

    Staged as a moral drama, Melanie Klein's Envy and Gratitude (1957) straddles two eras: one reflecting a simpler more concrete, historical method, and the other an approach of greater complexity, focused on the transferential moment. Embedded within the transference are the vicious circles of envy and punishment that are the hallmark of Klein's text. Punishment itself which is always punishment of both self and other, creates its own vicious circle, set in motion by a single act. In the sadomasochistic enactments that result, the moral force of Klein's categories fuels the countertransference. A detailed clinical hour is presented.

  19. Collective motions of globally coupled oscillators and some probability distributions on circle

    Energy Technology Data Exchange (ETDEWEB)

    Jaćimović, Vladimir [Faculty of Natural Sciences and Mathematics, University of Montenegro, Cetinjski put, bb., 81000 Podgorica (Montenegro); Crnkić, Aladin, E-mail: aladin.crnkic@hotmail.com [Faculty of Technical Engineering, University of Bihać, Ljubijankićeva, bb., 77000 Bihać, Bosnia and Herzegovina (Bosnia and Herzegovina)

    2017-06-28

    In 2010 Kato and Jones described a new family of probability distributions on circle, obtained as Möbius transformation of von Mises distribution. We present the model demonstrating that these distributions appear naturally in study of populations of coupled oscillators. We use this opportunity to point out certain relations between Directional Statistics and collective motion of coupled oscillators. - Highlights: • We specify probability distributions on circle that arise in Kuramoto model. • We study how the mean-field coupling affects the shape of distribution of phases. • We discuss potential applications in some experiments on cell cycle. • We apply Directional Statistics to study collective dynamics of coupled oscillators.

  20. From Death to Life – The Hydrological Circle of Cosmos and Copulation

    Directory of Open Access Journals (Sweden)

    Terje Oestigaard

    2008-10-01

    Full Text Available When a person dies, how is the soul transferred from the dead body to an infant in a mother's womb? In Hinduism this process in understood and explained metaphorically by the hydrological circle and the interrelatedness of fire and water. The cosmological circle of reincarnation is a life-giving process which includes the life-giving waters; the essence of life. Based on mythology and the sacred scriptures, this process is investigated.Key Words: Hindu Mythology, eroticism, funeral practice, sexualityDOI = 10.3126/dsaj.v2i0.1360Dhaulagiri Journal of Sociology and Anthropology Vol.2 pp.121-144

  1. Migraine with aura is associated with an incomplete circle of willis: results of a prospective observational study.

    Directory of Open Access Journals (Sweden)

    Brett Cucchiara

    Full Text Available OBJECTIVE: To compare the prevalence of an incomplete circle of Willis in patients with migraine with aura, migraine without aura, and control subjects, and correlate circle of Willis variations with alterations in cerebral perfusion. METHODS: Migraine with aura, migraine without aura, and control subjects were prospectively enrolled in a 1∶1∶1 ratio. Magnetic resonance angiography was performed to examine circle of Willis anatomy and arterial spin labeled perfusion magnetic resonance imaging to measure cerebral blood flow. A standardized template rating system was used to categorize circle of Willis variants. The primary pre-specified outcome measure was the frequency of an incomplete circle of Willis. The association between circle of Willis variations and cerebral blood flow was also analyzed. RESULTS: 170 subjects were enrolled (56 migraine with aura, 61 migraine without aura, 53 controls. An incomplete circle of Willis was significantly more common in the migraine with aura compared to control group (73% vs. 51%, p = 0.02, with a similar trend for the migraine without aura group (67% vs. 51%, p = 0.08. Using a quantitative score of the burden of circle of Willis variants, migraine with aura subjects had a higher burden of variants than controls (p = 0.02. Compared to those with a complete circle, subjects with an incomplete circle had greater asymmetry in hemispheric cerebral blood flow (p = 0.05. Specific posterior cerebral artery variants were associated with greater asymmetries of blood flow in the posterior cerebral artery territory. CONCLUSIONS: An incomplete circle of Willis is more common in migraine with aura subjects than controls, and is associated with alterations in cerebral blood flow.

  2. ULYSSES comes full circle, before revisiting the Sun's poles

    Science.gov (United States)

    1998-04-01

    From its unique perspective, Ulysses has provided scientists with the very first all-round map of the heliosphere, the huge bubble in space filled by the Sun's wind. The Earth swims deep inside the heliosphere, and gusts and shocks in the solar wind can harm satellites, power supplies and ommunications. They may also affect our planet's weather. A better grasp of the solar weather in the heliosphere is therefore one of the major aims of ESA's science programme. In a project of international cooperation between ESA and NASA, Ulysses was launched towards Jupiter in October 1990 by the US space shuttle Discovery. Arriving in February 1992, Ulysses stole energy from the giant planet in a slingshot manoeuvre and was propelled back towards the Sun in an elongated orbit almost at right angles to the ecliptic plane, where the Earth and other planets circle the Sun. "This month Ulysses returns to the point in space where its out-of-ecliptic journey began, but Jupiter isn't there," explains Richard Marsden, ESA's project scientist for Ulysses. "Following its own inexorable path around the Sun, Jupiter is far away on the opposite side of the Solar System. So Ulysses' course will not be changed a second time. The spacecraft is now in effect a man-made comet, forever bound into a 6-year polar orbit around the Sun." Ulysses now starts its second orbit. It will travel over the poles of the Sun in 2000-2001 just as the count of dark sunspots is expected to reach a maximum. With its operational life extended for the Ulysses Solar Maximum Mission, the spacecraft will find the heliosphere much stormier than during its first orbit. Discoveries so far Like its mythical namesake, Ulysses has already had an eventful voyage of discovery. Its unique trajectory has provided the scientific teams with a new perspective, from far out in space and especially in the previously unknown regions of the heliosphere over the Sun's poles. Passing within 9.8 degrees of the polar axis, the highly

  3. The Suggestion Circle: A Method for Solving Classroom Problems in Reading and Language Arts--Or Any Other Area!

    Science.gov (United States)

    Schmelzer, Ronald; Ramsey, Imogene

    In almost every classroom there is a minority of children that, regardless of effort, teachers have difficulty working with. The "Suggestion Circle" is a method for soliciting streamlined, on-focus ideas for solving classroom problems with the help of colleagues. In the Suggestion Circle there are three roles for people: the person who…

  4. The Two-Spectra Inverse Problem for Semi-infinite Jacobi Matrices in The Limit-Circle Case

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Luis O., E-mail: silva@leibniz.iimas.unam.mx; Weder, Ricardo [Instituto de Investigaciones en Matematicas Aplicadas y en Sistemas, Universidad Nacional Autonoma de Mexico, Departamento de Metodos Matematicos y Numericos (Mexico)], E-mail: weder@servidor.unam.mx

    2008-05-15

    We present a technique for reconstructing a semi-infinite Jacobi operator in the limit circle case from the spectra of two different self-adjoint extensions. Moreover, we give necessary and sufficient conditions for two real sequences to be the spectra of two different self-adjoint extensions of a Jacobi operator in the limit circle case.

  5. "I am a different man now” Sex offenders in Circles of Support and Accountability : A prospective study

    NARCIS (Netherlands)

    Mechtild, H.; Vogelvang, B.; Bogaerts, S.

    2017-01-01

    In Circles of Support and Accountability (CoSA), a group of trained and supervised volunteers support a sex offender (core member in a circle), with the aim of supporting the core member’s transitions toward full desistance. A prospective, multi-method design was used to explore psychological and so

  6. Making a Circle: Tool Use and the Spaces where We Live

    Science.gov (United States)

    Noble, Tracy; DiMattia, Cara; Nemirovsky, Ricardo; Barros, Apolinario

    2006-01-01

    A group of high school students created a drawing of a circle using a device called the Drawing Machine. To describe their experiences, we propose an alternative to the idea that to master a tool one must create a mental version of the tool. We suggest, instead, that as students change their relationships to a tool over time, their lived-in spaces…

  7. The Schur algorithm for generalized Schur functions III : J-unitary matrix polynomials on the circle

    NARCIS (Netherlands)

    Alpay, Daniel; Azizov, Tomas; Dijksma, Aad; Langer, Heinz

    2003-01-01

    The main result is that for J = ((1)(0) (0)(-1)) every J-unitary 2 x 2-matrix polynomial on the unit circle is an essentially unique product of elementary J-unitary 2 x 2-matrix polynomials which are either of degree 1 or 2k. This is shown by means of the generalized Schur transformation introduced

  8. Reading and Analyzing Ethnographies through Literature Circles: A Praxis Model for Encouraging Multicultural Educators

    Science.gov (United States)

    Coles-Ritchie, Marilee

    2013-01-01

    This study explores the process of implementing literature circles using ethnographies as the texts to better prepare teachers for multicultural/ multilingual teaching contexts. Data collected by the course instructor and two of the participants, using a Critical Teacher Action Research (CTAR) methodology, indicate that participants think…

  9. Analytical methods for an elliptic singular perturbation problem In a circle

    NARCIS (Netherlands)

    Temme, N.M.

    2007-01-01

    We consider an elliptic perturbation problem in a circle by using the analytical solution that is given by a Fourier series with coefficients in terms of modified Bessel functions. By using saddle point methods we construct asymptotic approximations with respect to a small parameter. In particular

  10. Analytical methods for an elliptic singular perturbation problem in a circle

    NARCIS (Netherlands)

    Temme, N.M.

    2006-01-01

    We consider an elliptic perturbation problem in a circle by using the analytical solution that is given by a Fourier series with coefficients in terms of modified Bessel functions. By using saddle point methods we construct asymptotic approximations with respect to a small parameter. In particular w

  11. Strategic Sustainability Management for Enhancing Corporate Value: in the context of Korean Business Circles

    NARCIS (Netherlands)

    Y-G. Ahn

    2007-01-01

    textabstractIn line with the growing importance of Corporate Sustainability Management (CSM) in business circles, the linkages between CSM, corporate values and performance is becoming increasingly higher on the agenda both for internal corporate management purposes and for external relations for co

  12. Quasi-symmetric Conjugacy of Blaschke Products on the unit Circle

    DEFF Research Database (Denmark)

    Petersen, Carsten Lunde

    2007-01-01

    Let B be a Blaschke product for which the restriction to the unit circle 1 is a degree d > 1 covering. We prove that B is quasi-symmetrically conjugate to z zd on 1, if all its periodic points in 1 are repelling and if 1 does not intersect the -limit set of any recurrent critical point for B....

  13. The Three Circles Redux: A Market-Theoretic Perspective on World Englishes

    Science.gov (United States)

    Park, Joseph Sung-Yul; Wee, Lionel

    2009-01-01

    While Kachru's Three Circles model of World Englishes (Kachru 1985, 1986; Kachru and Nelson 1996) has been highly influential in highlighting the changing distribution and functions of English, it has also been criticized for its inability to account for the heterogeneity and dynamics of English-using communities, and for perpetuating the very…

  14. Constructing Knowledge about the Trigonometric Functions and Their Geometric Meaning on the Unit Circle

    Science.gov (United States)

    Altman, Renana; Kidron, Ivy

    2016-01-01

    Processes of knowledge construction are investigated. A learner is constructing knowledge about the trigonometric functions and their geometric meaning on the unit circle. The analysis is based on the dynamically nested epistemic action model for abstraction in context. Different tasks are offered to the learner. In his effort to perform the…

  15. The Effects of Inflated Seating Cushions on Engagement in Preschool Circle Time

    Science.gov (United States)

    Seifert, Anna M.; Metz, Alexia E.

    2017-01-01

    Inflatable balls and cushions made of non-latex rubber can provide alternatives to sitting on the floor/ground or classroom chairs. This study tested the effect of inflatable cushions (wiggle cushions) placed on the floor for seating during circle time in typical preschool classrooms. The effect on attention was tested using alternating periods of…

  16. Literature Circles: Meeting Reading Standards, Making Personal Connections, and Appreciating Other Interpretations

    Science.gov (United States)

    Latendresse, Carter

    2004-01-01

    This article discusses a reading instruction applicable to widely diverse classrooms, because it weaves together dynamic strands from three approaches to teaching reading: literature circle method, reciprocal teaching, and modern literary theories. The author presents three stages to achieve reading success: (1) applying the key features of…

  17. "Slow Down, You Move Too Fast:" Literature Circles as Reflective Practice

    Science.gov (United States)

    Sanacore, Joseph

    2013-01-01

    Becoming an effective literacy learner requires a bit of slowing down and appreciating the reflective nature of reading and writing. Literature circles support this instructional direction because they provide opportunities for immersing students in discussions that encourage their personal responses. When students feel their personal responses…

  18. PT-invariance and representations of the Temperley-Lieb algebra on the unit circle

    CERN Document Server

    Korff, Christian

    2007-01-01

    We present in detail a recent conjecture on self-adjoint representations of the Temperley-Lieb algebra for particular values on the unit circle. The formulation in terms of graphical calculus is emphasized and discussed for several examples. The role of PT (parity and time reversal) invariance is highlighted as it might prove important for generalising the construction to other cases.

  19. Runaway Climate Change as Challenge to the "Closing Circle" of Education for Sustainable Development

    Science.gov (United States)

    Selby, David; Kagawa, Fumiyo

    2010-01-01

    Education for sustainable development (ESD) is the latest and thickest manifestation of the "closing circle" of policy-driven environmental education. Characterised by definitional haziness, a tendency to blur rather than lay bare inconsistencies and incompatibilities, and a cozy but ill-considered association with the globalisation agenda, the…

  20. Dinner Tables and Concentric Circles: A Harmony of Mathematics, Music, and Physics

    Science.gov (United States)

    Douthett, Jack; Krantz, Richard J.

    2008-01-01

    How should men and women be seated around a dinner table to maximize conversation between members of the opposite sex? What can be said about the distribution of points around two concentric circles? How are the white and black keys on the piano keyboard organized? What spin configuration in the Ising model minimizes energy? These four problems…

  1. Classroom community and discourse: How argumentation emerges during a Socratic circle

    Directory of Open Access Journals (Sweden)

    Alexis Carmela Brown

    2016-03-01

    Full Text Available Literacy and language development is a central aspect of educational theory and practice.  One area of literacy and rowlanguage research that has had a lot of attention is dialogic teaching (Bakhtin, 1984; Freire, 1970; Murphey, Wilkinson, Soter, Hennessey, & Alexander, 2009; Reznitskaya & Gregory, 2013.  However, there is limited research on how high school students use their classroom discourse to construct meaning, especially in argumentation.  The purpose of this data analysis is to investigate the emergence of argumentation literacy in a Socratic circle.  Socratic circles, a literacy practice consisting of two concentric circles of students focused around a piece of text, are used to provide students with the opportunity to co-construct meaning through classroom dialogue (Copeland, 2005.  The emergence and construction of argumentation is analyzed by applying discourse analysis to a video of a high school classroom,.  Findings from this analysis reveal that through the use of exploratory talk, three discourse patterns emerge that are in line with argumentation practices: (1 generalizations, (2 communicative struggles, and (3 co-construction of ideas.  Results of the analysis are discussed to inform theory and instruction on dialogic teaching and the use of Socratic circles to develop argumentation-related forms of literacy.

  2. Detection of Veneer Moisture Content by Surface-circle-shaped Resistance

    Institute of Scientific and Technical Information of China (English)

    Sa Chao; Du Hongbo; Zhang Biguang; Wang Guozhu

    2003-01-01

    This paper, with veneer as a particularly detected target, deals with a new method for detecting veneer moisture content. Surface resistance is measured by the fixed pressure, circle-shaped point and surface-touched detector. With the help of the computer, the veneer moisture and its distribution will be detected in a faster way with no harm to the veneer surface.

  3. "Telling Stories Long into the Night": Romantic Circles High School Project.

    Science.gov (United States)

    Walton, Brenda H.; Bork, Tara

    2001-01-01

    Reports on the authors' experiences in the Romantic Circles (RC) High School Project. Considers how RC High enables technology to be used as a tool in the study of literature and culture of the past, subjects that often seem dead and remote from a student's concern. (SG)

  4. Volunteers in Circles of Support and Accountability : Job demands, job resources, and outcome

    NARCIS (Netherlands)

    Höing, M.A.; Vogelvang, B.; Bogaerts, Stefan

    2016-01-01

    In Circles of Support and Accountability (CoSA), volunteers support a medium- to high-risk sex offender in his process toward desistance by developing a long-term empathic relationship. More knowledge is needed about the impact of this work on volunteers themselves. In a sample of 40 Dutch CoSA volu

  5. Learners' Perceptions toward Pronunciation Instruction in Three Circles of World Englishes

    Science.gov (United States)

    Kang, Okim

    2015-01-01

    From the perspective of World Englishes (i.e., varieties of English in different regions of the world), mutual intelligibility is a key issue for both listeners and speakers. Nevertheless, learners often have an idealized notion of native-speaker spoken norms and may be in favor of more prestigious inner circle models than others. This study…

  6. Early-Years Teachers' Concept Images and Concept Definitions: Triangles, Circles, and Cylinders

    Science.gov (United States)

    Tsamir, Pessia; Tirosh, Dina; Levenson, Esther; Barkai, Ruthi; Tabach, Michal

    2015-01-01

    This study investigates practicing early-years teachers' concept images and concept definitions for triangles, circles, and cylinders. Teachers were requested to define each figure and then to identify various examples and non-examples of the figure. Teachers' use of correct and precise mathematical language and reference to critical and…

  7. Reactivation of chromosomally integrated human herpesvirus-6 by telomeric circle formation.

    Directory of Open Access Journals (Sweden)

    Bhupesh K Prusty

    Full Text Available More than 95% of the human population is infected with human herpesvirus-6 (HHV-6 during early childhood and maintains latent HHV-6 genomes either in an extra-chromosomal form or as a chromosomally integrated HHV-6 (ciHHV-6. In addition, approximately 1% of humans are born with an inheritable form of ciHHV-6 integrated into the telomeres of chromosomes. Immunosuppression and stress conditions can reactivate latent HHV-6 replication, which is associated with clinical complications and even death. We have previously shown that Chlamydia trachomatis infection reactivates ciHHV-6 and induces the formation of extra-chromosomal viral DNA in ciHHV-6 cells. Here, we propose a model and provide experimental evidence for the mechanism of ciHHV-6 reactivation. Infection with Chlamydia induced a transient shortening of telomeric ends, which subsequently led to increased telomeric circle (t-circle formation and incomplete reconstitution of circular viral genomes containing single viral direct repeat (DR. Correspondingly, short t-circles containing parts of the HHV-6 DR were detected in cells from individuals with genetically inherited ciHHV-6. Furthermore, telomere shortening induced in the absence of Chlamydia infection also caused circularization of ciHHV-6, supporting a t-circle based mechanism for ciHHV-6 reactivation.

  8. Approximation by polynomials and Blaschke products having all zeros on a circle

    CERN Document Server

    Farmer, David W

    2010-01-01

    We show that a nonvanishing analytic function on a domain in the unit disc can be approximated by (a scalar multiple of) a Blaschke product whose zeros lie on a prescribed circle enclosing the domain. We also give a new proof of the analogous classical result for polynomials. A connection is made to universality results for the Riemann zeta function.

  9. Strategic Sustainability Management for Enhancing Corporate Value: in the context of Korean Business Circles

    NARCIS (Netherlands)

    Y-G. Ahn

    2007-01-01

    textabstractIn line with the growing importance of Corporate Sustainability Management (CSM) in business circles, the linkages between CSM, corporate values and performance is becoming increasingly higher on the agenda both for internal corporate management purposes and for external relations for

  10. Statistics of Poincare recurrences for a class of smooth circle maps

    Energy Technology Data Exchange (ETDEWEB)

    Buric, Nikola [Department of Physics and Mathematics, Faculty of Pharmacy, University of Beograd, Vojvode Stepe 450, 11000 Belgrade (Serbia and Montenegro)]. E-mail: buric@phy.bg.ac.yu; Rampioni, Aldo [Department of Physics, University of Bologna, INFN Sezione di Bologna (Italy); Turchetti, Giorgio [Department of Physics, University of Bologna, INFN Sezione di Bologna (Italy)

    2005-03-01

    Statistics of Poincare recurrence for a class of circle maps, including sub-critical, critical, and super-critical cases, are studied. It is shown how the topological differences in the various types of the dynamics are manifested in the statistics of the return times.

  11. The arithmetic of elliptic fibrations in gauge theories on a circle

    Science.gov (United States)

    Grimm, Thomas W.; Kapfer, Andreas; Klevers, Denis

    2016-06-01

    The geometry of elliptic fibrations translates to the physics of gauge theories in F-theory. We systematically develop the dictionary between arithmetic structures on elliptic curves as well as desingularized elliptic fibrations and symmetries of gauge theories on a circle. We show that the Mordell-Weil group law matches integral large gauge transformations around the circle in Abelian gauge theories and explain the significance of Mordell-Weil torsion in this context. We also use Higgs transitions and circle large gauge transformations to introduce a group law for genus-one fibrations with multi-sections. Finally, we introduce a novel arithmetic structure on elliptic fibrations with non-Abelian gauge groups in F-theory. It is defined on the set of exceptional divisors resolving the singularities and divisor classes of sections of the fibration. This group structure can be matched with certain integral non-Abelian large gauge transformations around the circle when studying the theory on the lower-dimensional Coulomb branch. Its existence is required by consistency with Higgs transitions from the non-Abelian theory to its Abelian phases in which it becomes the Mordell-Weil group. This hints towards the existence of a new underlying geometric symmetry.

  12. The arithmetic of elliptic fibrations in gauge theories on a circle

    Energy Technology Data Exchange (ETDEWEB)

    Grimm, Thomas W. [Max-Planck-Institut für Physik,Föhringer Ring 6, 80805 Munich (Germany); Institute for Theoretical Physics,Utrecht University, Leuvenlaan 4, 3584 CE Utrecht (Netherlands); Center for Extreme Matter and Emergent Phenomena,Utrecht University, Leuvenlaan 4, 3584 CE Utrecht (Netherlands); Kapfer, Andreas [Max-Planck-Institut für Physik,Föhringer Ring 6, 80805 Munich (Germany); Klevers, Denis [Theory Group, Physics Department, CERN,CH-1211, Geneva 23 (Switzerland)

    2016-06-20

    The geometry of elliptic fibrations translates to the physics of gauge theories in F-theory. We systematically develop the dictionary between arithmetic structures on elliptic curves as well as desingularized elliptic fibrations and symmetries of gauge theories on a circle. We show that the Mordell-Weil group law matches integral large gauge transformations around the circle in Abelian gauge theories and explain the significance of Mordell-Weil torsion in this context. We also use Higgs transitions and circle large gauge transformations to introduce a group law for genus-one fibrations with multi-sections. Finally, we introduce a novel arithmetic structure on elliptic fibrations with non-Abelian gauge groups in F-theory. It is defined on the set of exceptional divisors resolving the singularities and divisor classes of sections of the fibration. This group structure can be matched with certain integral non-Abelian large gauge transformations around the circle when studying the theory on the lower-dimensional Coulomb branch. Its existence is required by consistency with Higgs transitions from the non-Abelian theory to its Abelian phases in which it becomes the Mordell-Weil group. This hints towards the existence of a new underlying geometric symmetry.

  13. 17th century arguments for the impossibility of the indefinite and the definite circle quadrature

    DEFF Research Database (Denmark)

    Lützen, Jesper

    2014-01-01

    The classical problem of the quadrature (or equivalently the rectification) of the circle enjoyed a renaissance in the second half of the 17th century. The new analytic methods provided the means for the discovery of infinite expressions of and for the first attempts to prove impossibility statem...

  14. CHARACTERIZATION OF SINGLE-STRAND ORIGINS OF CRYPTIC ROLLING-CIRCLE PLASMIDS FROM BACILLUS-SUBTILIS

    NARCIS (Netherlands)

    MEIJER, WJJ; VENEMA, G; BRON, S

    1995-01-01

    In this paper we describe the isolation and characterization of single strand origins (SSOs) of several cryptic Bacillus subtilis plasmids which use the rolling-circle mechanism of replication, The plasmids used in this study involved pTA1015, pTA1020, pTA1030, pTA1040, pTA1050 and pTA1060, The SSO

  15. NUMERICAL SOLUTIONS FOR THE TRANSIENT FLOW IN THE HOMOGENOUS CLOSED CIRCLE RESERVOIRS

    Institute of Scientific and Technical Information of China (English)

    周蓉; 刘曰武; 周富信

    2003-01-01

    There are many fault block fields in China. A fault block field consists of fault pools.The small fault pools can be viewed as the closed circle reservoirs in some case. In order to know the pressure change of the developed formation and provide the formation data for developing the fault block fields reasonably, the transient flow should be researched. In this paper, we use the automatic mesh generation technology and the finite element method to solve the transient flow problem for the well located in the closed circle reservoir, especially for the well located in an arbitrary position in the closed circle reservoir. The pressure diffusion process is visualized and the well-location factor concept is first proposed in this paper. The typical curves of pressure vs time for the well with different welllocation factors are presented. By comparing numerical results with the analytical solutions of the well located in the center of the closed circle reservoir, the numerical method is verified.

  16. Volunteers in circles of support and accountability : Job demands, job resources, and outcome

    NARCIS (Netherlands)

    Höing, M.A.; Vogelvang, B.; Bogaerts, Stefan

    2017-01-01

    In Circles of Support and Accountability (CoSA), volunteers support a medium- to high-risk sex offender in his process toward desistance by developing a long-term empathic relationship. More knowledge is needed about the impact of this work on volunteers themselves. In a sample of 40 Dutch CoSA volu

  17. Quasi-periodic Bifurcations of Invariant Circles in Low-dimensional Dissipative Dynamical Systems

    NARCIS (Netherlands)

    Vitolo, Renato; Broer, Henk; Simo, Carles

    2011-01-01

    This paper first summarizes the theory of quasi-periodic bifurcations for dissipative dynamical systems. Then it presents algorithms for the computation and continuation of invariant circles and of their bifurcations. Finally several applications are given for quasiperiodic bifurcations of Hopf, sad

  18. Cultural Safety Circles and Indigenous Peoples' Perspectives: Inclusive Practices for Participation in Higher Education

    Science.gov (United States)

    Aseron, Johnnie; Greymorning, S. Neyooxet; Miller, Adrian; Wilde, Simon

    2013-01-01

    Indigenous experiences, as found within traditional ways and cultural practices, are an acknowledgement of traditional methods for sharing, learning, and collective knowledge development and maintenance. The application of Cultural Safety Circles can help provide a collective space where definitions for cultural and educational exchange can take…

  19. Two-dimensional Few-circle Optical Pulses in the Inhomogeneous Environment of Carbon Nanotubes

    Directory of Open Access Journals (Sweden)

    M.B. Belonenko

    2015-12-01

    Full Text Available We consider the task about few-circle optical pulses dynamics (light bullets in the inhomogeneous environment of carbon nanotubes. Electromagnetic field of pulse describes classically, on basis of Maxwell equation, and carbon nanotubes give dispersion law for electrons, which interacting with pulse. We show that light bullets propagate stably.

  20. Using Reading Circles Strategy for Developing Preparatory Students' Critical Reading Skills and Social Skills

    Science.gov (United States)

    Abdelrasoul, Mohamed Mahmoud Ibrahim

    2014-01-01

    The present study aimed at developing the necessary critical reading skills and social skills of the Egyptian EFL second year preparatory school students, through a proposed program based on using reading circles strategy. The study participants were 44 students from Sohag Experimental Preparatory School in Sohag Governorate. Instruments of the…

  1. STEM High School Teachers' Views of Implementing PBL: An Investigation Using Anecdote Circles

    Science.gov (United States)

    deChambeau, Aimée L.; Ramlo, Susan E.

    2016-01-01

    Problem-based learning (PBL) has been gaining in popularity, especially within the context of STEM-based (science, technology, engineering, and mathematics) schools. Program assessments for these schools typically focus on student standardized test scores rather than the needs of the teachers. This study utilized anecdote circles, storytelling via…

  2. Strategic Sustainability Management for Enhancing Corporate Value: in the context of Korean Business Circles

    NARCIS (Netherlands)

    Y-G. Ahn

    2007-01-01

    textabstractIn line with the growing importance of Corporate Sustainability Management (CSM) in business circles, the linkages between CSM, corporate values and performance is becoming increasingly higher on the agenda both for internal corporate management purposes and for external relations for co

  3. Treatment of infraorbital dark circles using 694-nm fractional Q-switched ruby laser.

    Science.gov (United States)

    Xu, Tian-Hua; Li, Yuan-Hong; Chen, John Z S; Gao, Xing-Hua; Chen, Hong-Duo

    2016-12-01

    The objective of this study was to evaluate the efficacy and safety of using a 694-nm fractional Q-switched ruby laser to treat infraorbital dark circles. Thirty women with infraorbital dark circles (predominant color: dark/brown) participated in this open-labeled study. The participants received eight sessions of 694-nm fractional Q-switched ruby laser treatment using a fluence of 3.0-3.5 J/cm(2), at an interval of 7 days. The melanin deposition in the lesional skin was observed in vivo using reflectance confocal microscopy (RCM). The morphological changes were evaluated using a global evaluation, an overall self-assessment, and a Mexameter. Twenty-eight of the 30 patients showed global improvements that they rated as excellent or good. Twenty-six patients rated their overall satisfaction as excellent or good. The melanin index indicated a substantial decrease from 240.44 (baseline) to 194.56 (P dark/brown infraorbital dark circles is caused by increased melanin deposition in the upper dermis. The treatment of these infraorbital dark circles using a 694-nm fractional QSR laser is safe and effective.

  4. Inquiry into Lemercier de la Rivière’s entry into the circle of Quesnay.

    OpenAIRE

    Bernard Herencia

    2013-01-01

    This paper proposes a new reading of the sources to release a new dating for entering Lemercier de la Rivière in intellectual circles of Quesnay and Mirabeau. In doing so, this Physiocrat generally accepted by commentators as a secondary author of the school led by Quesnay, appears as one of its founders.

  5. Dear Nel: Opening the Circles of Care (Letters to Nel Noddings)

    Science.gov (United States)

    Lake, Robert

    2012-01-01

    This collection is a moving tribute to Nel Noddings, a fascinating and influential scholar who has contributed greatly to numerous fields, including education, feminism, ethics, and the study of social justice and equity. "Dear Nel: Opening the Circles of Care" presents contributions from renowned teachers, educators, and activists, such as David…

  6. Penentuan Segmen Pasar Produk Private Label Makanan Siap Saji (Studi Pada Circle K Surabaya)

    OpenAIRE

    2015-01-01

    Segmentasi pasar memberikan peluang bagi peritel guna menyesuaikan produknya dengan permintaan konsumen. Penelitian ini bertujuan untuk mengetahui segmen pasar produk private label makanan siap saji di Circle K. Penelitian menggunakan analisis deskriptif untuk menggambarkan karakteristik konsumen dari variabel demografis, geografis, dan perilaku, analisis cluster K-Mean untuk menentukan segmen pasar dari variabel psikografis, analisis SWOT untuk menyusun faktor-faktor strategis perusahaan. Ha...

  7. Runaway Climate Change as Challenge to the "Closing Circle" of Education for Sustainable Development

    Science.gov (United States)

    Selby, David; Kagawa, Fumiyo

    2010-01-01

    Education for sustainable development (ESD) is the latest and thickest manifestation of the "closing circle" of policy-driven environmental education. Characterised by definitional haziness, a tendency to blur rather than lay bare inconsistencies and incompatibilities, and a cozy but ill-considered association with the globalisation agenda, the…

  8. A Study of Traditional Circle Games Played in Public School Kindergartens across the United States.

    Science.gov (United States)

    Rothlein, Liz; And Others

    1988-01-01

    Investigates traditional circle games played in 203 public school kindergartens in 35 states. Results indicate that music/movement and racing games were the major game categories; the most common frequency and duration was three times per week for 20 minutes; and the purposes of the games were to have fun, and to foster social, physical motor, and…

  9. The rolling-circle melting-pot model for porcine circovirus DNA replication

    Science.gov (United States)

    A stem-loop structure, formed by a pair of inverted repeats during DNA replication, is a conserved feature at the origin of DNA replication (Ori) among plant and animal viruses, bacteriophages and plasmids that replicate their genomes via the rolling-circle replication (RCR) mechanism. Porcine circo...

  10. Embedding and Distributing Constant Time Delay in Circle Time and Transitions.

    Science.gov (United States)

    Wolery, Mark; Anthony, Leslie; Caldwell, Nicola K.; Snyder, Erin D.; Morgante, James D.

    2002-01-01

    This study evaluated embedding and distributing constant time delay instructional trials into circle time and transitions between activities in a summer camp program. Three boys (ages 5-8) with disabilities or behavior problems participated. Results indicated the children acquired the behaviors they were taught and generalized the learned…

  11. "Slow Down, You Move Too Fast:" Literature Circles as Reflective Practice

    Science.gov (United States)

    Sanacore, Joseph

    2013-01-01

    Becoming an effective literacy learner requires a bit of slowing down and appreciating the reflective nature of reading and writing. Literature circles support this instructional direction because they provide opportunities for immersing students in discussions that encourage their personal responses. When students feel their personal responses…

  12. Infinite-Dimensional Feedback Systems : The Circle Criterion and Input-to-State Stability

    NARCIS (Netherlands)

    Jayawardhana, Bayu; Logemann, Hartmut; Ryan, Eugene P.

    2008-01-01

    An input-to-state stability theory, which subsumes results of circle criterion type, is developed in the context of a class of infinite-dimensional systems. The generic system is of Lur’e type: a feedback interconnection of a well-posed infinite-dimensional linear system and a nonlinearity. The

  13. Youth Voter Turnout 1992 to 2004: Estimates from Exit Polls. CIRCLE Fact Sheet.

    Science.gov (United States)

    Center for Information and Research on Civic Learning and Engagement, 2005

    2005-01-01

    CIRCLE has issued two releases estimating youth turnout in the 2004 presidential election. The first release was issued on November 3rd and provided the earliest turnout estimates based on National Election Pool (NEP) state and national exit polls and a preliminary vote count. The second was a Fact Sheet released on November 8th which provided…

  14. Integer Programming Formulations for Approximate Packing Circles in a Rectangular Container

    Directory of Open Access Journals (Sweden)

    Igor Litvinchev

    2014-01-01

    Full Text Available A problem of packing a limited number of unequal circles in a fixed size rectangular container is considered. The aim is to maximize the (weighted number of circles placed into the container or minimize the waste. This problem has numerous applications in logistics, including production and packing for the textile, apparel, naval, automobile, aerospace, and food industries. Frequently the problem is formulated as a nonconvex continuous optimization problem which is solved by heuristic techniques combined with local search procedures. New formulations are proposed for approximate solution of packing problem. The container is approximated by a regular grid and the nodes of the grid are considered as potential positions for assigning centers of the circles. The packing problem is then stated as a large scale linear 0-1 optimization problem. The binary variables represent the assignment of centers to the nodes of the grid. Nesting circles inside one another is also considered. The resulting binary problem is then solved by commercial software. Numerical results are presented to demonstrate the efficiency of the proposed approach and compared with known results.

  15. Effect of end-to-end invagination pancreaticojejunostomy with circle discontinuous U suture in pancreatic surgery

    Institute of Scientific and Technical Information of China (English)

    ZHANG Xuewen; XUAN Wei; JIANG Tao; JI Degang; YANG Yongsheng; ZHANG Dan; XIE Yingjun; MENG Zihui; ZHAO Jisheng

    2007-01-01

    The aim of this paper is to summarize the methods of pancreaficojejunostomy in the pancreatic operation and to study the safety and feasibility of a new operative method called end-to-end invagination pancreaticojejunostomy with circle discontinuous U suture to prevent fistula of pancreaticojejunostomy.Eight-three patients with pancreaticoduodenectomy in the 3rd Hospital,Jilin University from 2001 January to 2006 April were reviewed.The incidences of pancreatic fistula with different types of pancreaticojejunostomy were compared.The overall incidence rate of pancreatic fistula was 26.5% (22/83).No pancreatic fistula occurred in end-to-end invagination pancreaticojejunostomy with circle discontinuous U suture.The incidence rate of the fistula following end-to-end invagination pancreaticojejunostomy with circle discontinuous U suture was significantly lower than that of traditional end-to-end pancreaticojejunostomy [40%,(10/25),P<0.01] and end-to-side pancreaticojejunostomy [27.3%,(12/44),P < 0.05],but no significant difference (P>0.05) between traditional end-to-end pancreaticojejunostomy and end-to-side pancreaticojejunostomywas discovered.End-to-end invagination pancreaticojejunostomy with circle discontinuous U suture has a definite effect on avoiding pancreatic fistula following pancreaticojejunostomy and is worth being recommended.But the cases were limited,so this method would still need to be observed and confirmed further in the future.

  16. Education, Enlightenment and Positivism: The Vienna Circle's Scientific World-Conception Revisited

    Science.gov (United States)

    Uebel, Thomas E.

    2004-01-01

    The scientific world-conception is properly understood as an enlightenment philosophy only if the current reassessment of the historical Vienna Circle(as opposed to the caricature still prevalent in the popular philosophical imagination) is once more extended to comprehend not only its thorough-going epistemological anti-foundationalism, but also…

  17. Circle of Security in Child Care: Putting Attachment Theory into Practice in Preschool Classrooms

    Science.gov (United States)

    Cooper, Glen; Hoffman, Kent; Powell, Bert

    2017-01-01

    This article describes the Circle of Security-Classroom (COS-C) approach to applying attachment theory in preschool settings. Early childhood is an incubator for a wide range of development including the underpinnings of school readiness. Secure teacher-child relationships support this process. However, most preschool staff members lack guidance…

  18. The Arithmetic of Elliptic Fibrations in Gauge Theories on a Circle

    CERN Document Server

    Grimm, Thomas W; Klevers, Denis

    2016-01-01

    The geometry of elliptic fibrations translates to the physics of gauge theories in F-theory. We systematically develop the dictionary between arithmetic structures on elliptic curves as well as desingularized elliptic fibrations and symmetries of gauge theories on a circle. We show that the Mordell-Weil group law matches integral large gauge transformations around the circle in Abelian gauge theories and explain the significance of Mordell-Weil torsion in this context. We also use Higgs transitions and circle large gauge transformations to introduce a group law for genus-one fibrations with multi-sections. Finally, we introduce a novel arithmetic structure on elliptic fibrations with non-Abelian gauge groups in F-theory. It is defined on the set of exceptional divisors resolving the singularities and divisor classes of sections of the fibration. This group structure can be matched with certain integral non-Abelian large gauge transformations around the circle when studying the theory on the lower-dimensional ...

  19. Mending the Broken Circle: Treatment of Substance Dependence among Native Americans.

    Science.gov (United States)

    Garrett, Michael Tlanusta; Carroll, Jane J.

    2000-01-01

    Issues surrounding substance dependence of Native Americans are examined through the cultural concept of the Broken Circle. Traditional cultural views of wellness and healing are described. Underlying factors in substance dependence of Native Americans are presented along with practical counseling recommendations and implications for treatment…

  20. An Analysis of Elementary School Children's Fractional Knowledge Depicted with Circle, Rectangle, and Number Line Representations

    Science.gov (United States)

    Tunç-Pekkan, Zelha

    2015-01-01

    It is now well known that fractions are difficult concepts to learn as well as to teach. Teachers usually use circular pies, rectangular shapes and number lines on the paper as teaching tools for fraction instruction. This article contributes to the field by investigating how the widely used three external graphical representations (i.e., circle,…

  1. Circle of Security in Child Care: Putting Attachment Theory into Practice in Preschool Classrooms

    Science.gov (United States)

    Cooper, Glen; Hoffman, Kent; Powell, Bert

    2017-01-01

    This article describes the Circle of Security-Classroom (COS-C) approach to applying attachment theory in preschool settings. Early childhood is an incubator for a wide range of development including the underpinnings of school readiness. Secure teacher-child relationships support this process. However, most preschool staff members lack guidance…

  2. Quantization of Sine-Gordon solitons on the circle: semiclassical vs. exact results

    CERN Document Server

    Pawellek, Michael

    2008-01-01

    We consider the semiclassical quantization of sine-Gordon solitons on the circle with periodic and anti-periodic boundary conditions. The 1-loop quantum corrections to the mass of the solitons are determined using zeta function regularization in the integral representation. We compare the semiclassical results with exact numerical calculations in the literature and find excellent agreement even outside the plain semiclassical regime.

  3. Using Social Networks and ICTs to Enhance Literature Circles: A Practical Approach

    Science.gov (United States)

    Walker, Andrea

    2010-01-01

    The purpose of this paper is to describe and demonstrate how social networks such as "Facebook" and "Goodreads", and information and communication technologies (ICTs) tools like laptops and iPods can support and enhance literature circles. The innovation described is implemented by the library and aims to promote reading for…

  4. Identifying Quality Indicators of SAE and FFA: A Delphi Approach

    Science.gov (United States)

    Jenkins, Charles Cordell, III; Kitchel, Tracy

    2009-01-01

    The purpose of this study was to determine quality indicators for SAE and FFA according to 36 experts across the United States. This is a part of a larger study looking at all components of the traditional three-circle model. The study utilized the Delphi technique to garner expert opinion about quality indicators in Agricultural Education. For…

  5. An anatomical study of normal variations of circle of Willis in 132 fetus, newborn and adult

    Directory of Open Access Journals (Sweden)

    Bateni F

    2009-09-01

    Full Text Available "n Normal 0 false false false EN-US X-NONE AR-SA MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:Arial; mso-bidi-theme-font:minor-bidi;} Background: Several studies have investigated the variations in the anatomy of each segment of circle of Willis whereas a few have addressed the variations of this arterial circle as a whole. In this study the entire circle of Willis and its variations were studied in a cohort of Iranian people and compared with previous reports."n"nMethods: Anatomical variations of the circle of Willis in 132 brains of Iranian cadavers (102 male adults and 30 fetuses and infants were studied. The dissection process was digitally filmed for further studies. Using computer software the external diameters of the vessels were measured and the circle variations were classified. The variations of the circle as a whole and segmental variations were compared with previous studies. "n"nResults: Uni-and bilateral hypoplasia of posterior communicating arteries (PcoAs constituted the most common variation in our study which was similar to previous works. Aplasia of the anterior cerebral artery (A1 and the posterior cerebral artery (P1 were not observed. In 3.3% of fetuses and infants and 3% of adult instances both right and left posterior communicating arteries were absent. There was one case of anterior communicating artery (AcoA aplasia in

  6. Coefficients calculation of the best linear method for recovery of bounded analytic functions in a circle

    Directory of Open Access Journals (Sweden)

    Ovchintsev Mikhail Petrovich

    2014-04-01

    Full Text Available This paper considers the problem of optimal recovery of bounded analytic functions. Namely, the values of these functions are determined at the point from their values at n given points lying in the unit circle. At first, we recall the necessary basic concepts: error of approximation by some method (which is a complex function of n complex variables, the best approximation method. Some theorems from the works of K.U. Osipenko are discussed: on the existence of a best linear approximation method and on calculating the error of best recovery method. After that we write out the formula for finding the error of best approximation method of bounded analytic functions in a unit circle. The lemma of conformal invariance of optimal recovery problem of these functions follows. We prove that under conformal mapping of the unit circle onto itself the error of the best approximation method before mapping coincides with the error of the best approximation method after mapping. It is also proved that a linear best method after conformal mapping coincides with the linear best restore method before this mapping (wherein the problem of optimal recovery after mapping is considered on the images of n given points lying in the original unit circle. Finally, we consider the problem of optimal recovery of bounded analytic functions in a circle in special case when the given points coincide with the vertices of a regular n-gon, and the point itself coincides with its center (which coincides with the origin. We prove that all the coefficients of the best linear method in this case are identical (wherein we apply the lemma of conformal invariance of optimal recovery problem of bounded analytic functions. The formulas for calculating these coefficients are given (for this purpose we write out an integral. The result is the smart, simple formulas for calculating the coefficients of the best linear approximation method for this particular case.

  7. Enhanced x-ray resolving power achieved behind the focal circles of Cauchois spectrometers.

    Science.gov (United States)

    Seely, John F; Hudson, Lawrence T; Holland, Glenn E; Henins, Albert

    2008-05-20

    Maintaining high resolving power is a primary challenge in hard x-ray spectroscopy of newly developed bright and transient x-ray sources such as laser-produced plasmas. To address this challenge, the line widths in x-ray spectra with energies in the 17 keV to 70 keV range were recorded by positioning the detectors on and behind the focal circles of Cauchois type transmission-crystal spectrometers. To analyze and understand the observed line widths, we developed a geometrical model that accounts for source broadening and various instrumental broadening mechanisms. The x-ray sources were laboratory Mo or W electron-bombarded anodes, and the spectra were recorded on photostimulable phosphor image plates. For these relatively small x-ray sources, it was found that when the detector was placed on or near the focal circle, the line widths were dominated by the effective spatial resolution of the detector. When the detector was positioned beyond the focal circle, the line widths were determined primarily by source-size broadening. Moreover, the separation between the spectral lines increased with distance behind the focal circle faster than the line widths, resulting in increased resolving power with distance. Contributions to line broadenings caused by the crystal thickness, crystal rocking curve width, geometrical aberrations, and natural widths of the x-ray transitions were in all cases smaller than detector and source broadening, but were significant for some spectrometer geometries. The various contributions to the line widths, calculated using simple analytical expressions, were in good agreement with the measured line widths for a variety of spectrometer and source conditions. These modeling and experimental results enable the design of hard x-ray spectrometers that are optimized for high resolving power and for the measurement of the x-ray source size from the line widths recorded behind the focal circle.

  8. New mechanized system for circle spraying of oil palms seedling emergence

    Directory of Open Access Journals (Sweden)

    Darius El Pebrian

    2012-04-01

    Full Text Available A new machine system has been designed, developed and evaluated for extensive circle spraying of oil palms (Elaeis guineensis Jacq. in an effort to overcome the inefficient spraying problem with the conventional spraying system. The machine system consists of a four-wheeled drive 4WD prime mover with front mounted machine attachments for the circle spraying operation. The configuration of the circle spraying attachment consists of a hexagonal curved spray boom, lifting arm, opening-tilting mechanism unit, storage tank, spray pump, solid cone nozzles, and associate hydraulic system. Field performance tests on the machine system showed an average effective field capacity of 7.89 ha per man per day and when compared to the earlier reported effective field capacity of the walking spray-operated equipment using Serena LT16 knapsack sprayer; a difference of 1.97 time for circle spraying of mature palms grove. Reduction in the human energy expenditure of 101.28 kJ man-1 h-1 or 10.68 % but an increase in the spraying cost of 1.53 USD ha-1 or 24.9 % were obtained with the machine system against the walking spraying-operated equipment using Serena LT16 knapsack sprayer. Justification for machine system to be cost effective could be satisfied if the present effective field capacity is increased to 1.263 time with good skilled operator or if the current R&D cost is reduced to 0.41 time. This is because the improved field capacity of new machine system could not rationalize its current R&D cost. Admittedly, the machine system has great potential to overcome the limitations with the current employed machine/equipment in the circle spraying operation of oil palms in the plantation.

  9. Going full circle: phase-transition thermodynamics of ionic liquids.

    Science.gov (United States)

    Preiss, Ulrich; Verevkin, Sergey P; Koslowski, Thorsten; Krossing, Ingo

    2011-05-27

    We present the full enthalpic phase transition cycle for ionic liquids (ILs) as examples of non-classical salts. The cycle was closed for the lattice, solvation, dissociation, and vaporization enthalpies of 30 different ILs, relying on as much experimental data as was available. High-quality dissociation enthalpies were calculated at the G3 MP2 level. From the cycle, we could establish, for the first time, the lattice and solvation enthalpies of ILs with imidazolium ions. For vaporization, lattice, and dissociation enthalpies, we also developed new prediction methods in the course of our investigations. Here, as only single-ion values need to be calculated and the tedious optimization of an ion pair can be circumvented, the computational time is short. For the vaporization enthalpy, a very simple approach was found, using a surface term and the calculated enthalpic correction to the total gas-phase energy. For the lattice enthalpy, the most important constituent proved to be the calculated conductor-like screening model (COSMO) solvation enthalpy in the ideal electric conductor. A similar model was developed for the dissociation enthalpy. According to our assessment, the typical error of the lattice enthalpy would be 9.4 kJ mol(-1), which is less than half the deviation we get when using the (optimized) Kapustinskii equation or the recent volume-based thermodynamics (VBT) theory. In contrast, the non-optimized VBT formula gives lattice enthalpies 20 to 140 kJ mol(-1) lower than the ones we assessed in the cycle, because of the insufficient description of dispersive interactions. Our findings show that quantum-chemical calculations can greatly improve the VBT approaches, which were parameterized for simple, inorganic salts with ideally point-shaped charges. In conclusion, we suggest the term "augmented VBT", or "aVBT", to describe this kind of theoretical approach.

  10. 一种工程图中圆的整体识别方法%A Method of Global Recogniting Circles about Engineering Drawing

    Institute of Scientific and Technical Information of China (English)

    张显全

    2003-01-01

    In study on recognition of engineering drawings,the recognition for circle is a key technology. A newmethod of global recognition circle about engineering drawing is presented. Image of engineering drawing is process-ed. It depends on the circular arc of the image,the circle or circular arc is global recognized by tracing the circle direc-tion and region. Experimental results show that the method is feasibility and availability.

  11. Going Round in Circles: Mobility, Destination and Experience

    Directory of Open Access Journals (Sweden)

    Alan Clarke

    2011-10-01

    Full Text Available This paper addresses the changing approaches to transport in urban tourism as seen through the move from functional sectoral accounts towards a perspective informed by the experience economy. By reviewing the traditional service offers, it is possible to unpack what lies within the service dominant logics that lead to co-creation of value and the realisation of quality tourism experiences. The paper then considers the adoption and adaptation of traditional forms of transport within the value proposition in urban tourism. Mobility in tourism is a strangely new focus of attention, strangely because without it there would be no tourism to speak of. However mobility requires a framework of civil and legal entitlements that allow people to move and a transport infrastructure that allows those rights to be realised in both working and leisure time situations. This article will address the construction of the tourism transport infrastructure by examining the ways in which the transportation elements in mobility have been re-thought within tourism. The first part of the paper will re-construct an account of transport and mobility which deals with it in terms of the functions and logistics of delivery, both between points of origin and destinations, and within destinations. These perspectives can be seen in the texts which shape the basic tourism curriculum (Cooper et al, 2008; Page, 2009 and explain how tourism and transport have developed over the years by integrating the opportunities provided by the new technologies – motorised vehicles (both cars and coaches, trains, ships and aeroplanes – to allow for the development of a range of destinations. Lumsdon and Page (2004 introduced a new approach to transport and tourism by distinguishing between transport for tourism and transport as tourism, which provides a linkage between the first and second parts of this article. The second part will develop an account of mobility in tourism that demonstrates

  12. Going round in circles: mobility, destination and experience

    Directory of Open Access Journals (Sweden)

    Alan Clarke

    2010-10-01

    Full Text Available This paper addresses the changing approaches to transport in urban tourism as seen through the move from functional sectoral accounts towards a perspective informed by the experience economy. By reviewing the traditional service offers, it is possible to unpack what lies within the service dominant logics that lead to co-creation of value and the realisation of quality tourism experiences. The paper then considers the adoption and adaptation of traditional forms of transport within the value proposition in urban tourism. Mobility in tourism is a strangely new focus of attention, strangely because without it there would be no tourism to speak of. However mobility requires a framework of civil and legal entitlements that allow people to move and a transport infrastructure that allows those rights to be realised in both working and leisure time situations. This article will address the construction of the tourism transport infrastructure by examining the ways in which the transportation elements in mobility have been re-thought within tourism. The first part of the paper will re-construct an account of transport and mobility which deals with it in terms of the functions and logistics of delivery, both between points of origin and destinations, and within destinations. These perspectives can be seen in the texts which shape the basic tourism curriculum and explain how tourism and transport have developed over the years by integrating the opportunities provided by the new technologies – motorised vehicles (both cars and coaches, trains, ships and aeroplanes – to allow for the development of a range of destinations. Lumsdon and Page (2004 introduced a new approach to transport and tourism by distinguishing between transport for tourism and transport as tourism, which provides a linkage between the first and second parts of this article. The second part will develop an account of mobility in tourism that demonstrates how their uniqueness derives

  13. Cerebral cross-perfusion and the Circle of Willis: does physiology trump anatomy?

    Directory of Open Access Journals (Sweden)

    Musicki K

    2017-07-01

    Full Text Available Korana Musicki,1 Katherine Victoria Hurst,1,2 Zoltán Molnár,3 Elizabeth Hardy,4 Ashok Handa,1,2 1Department of Vascular Surgery, John Radcliffe Hospital, 2Nuffield Department of Surgical Sciences, 3Department of Physiology, Anatomy and Genetics, University of Oxford, 4Vascular Studies Unit, John Radcliffe Hospital, Oxford, UK Introduction: Cerebral cross-perfusion is essential for ipsilateral brain viability during unilateral insult. Aortic arch and great vessel procedures depend on its function for safe practice, unless adjuncts like shunts are used. This paper assesses the contribution of cerebrovascular anatomy against physiology in determining requisite hemispheric perfusion during carotid endarterectomy (CEA.Materials and methods: A review of shunting requirements for CEAs under locoregional anesthesia (LA at the John Radcliffe Hospital during 1999–2013 was performed. A PubMed search for “Circle of Willis” was screened for all original articles defining cerebrovascular anatomy by postmortem or angiography.Results: Over 14 years, 1137 CEAs were performed under cervical plexus block; during this period, the departmental standard of practice evolved from exclusively general anesthesia to predominantly LA. CEAs performed under LA during the early phase (1999–2003 had a shunt rate of 15.1%, compared to 20% as predicted by stump pressures alone. However, shunting decreased as higher perioperative systolic pressures were routinely practiced; shunt rates were 8.0% during the intermediate (2004–2007 and 6.4% during the later (2008–2013 phase. By comparison, 25 articles characterizing 6414 brains report an intact circle of Willis in 33–35% of people, with a complete hemi-circle anteriorly (77% seen more commonly than posteriorly (42%, and 11–16% deficient in both hemi-circles with no cross-flow.Conclusion: Cerebral cross-perfusion is fundamental for safe CEA. Anatomy of the circle of Willis alone does not itself determine adequacy

  14. Ergonomics in total quality management: how can we sell ergonomics to management?

    Science.gov (United States)

    Lee, K S

    2005-04-15

    The objective of this paper is to describe how and why ergonomics should be promoted in total quality management (TQM). Ergonomics and TQM activities are compared. An approach is proposed to apply ergonomics in TQM using ergonomics circles. An eight-step approach is introduced for applying ergonomics using ergonomics circles and a study that employed this approach in Korea is discussed. In applying this approach, all processes were first evaluated by workers. Processes that were identified as problematic were analysed by a company-wide committee to set priorities for improvement. An ergonomics improvement team consisting of safety and health personnel, process engineers and management innovation personnel then worked on the processes using a low-cost approach. It was found that applying ergonomics using ergonomics circles as quality circles in TQM was effective in improving workplaces and resulted in increasing productivity, cost saving and improved safety.

  15. MATHEMATICAL MODEL FOR DETERMINATION OF VOLUMETRIC OUTPUT OF LUMBER FROM LOGS, CONTAINING SEVERAL QUALITY AREAS

    Directory of Open Access Journals (Sweden)

    Mikryukova E. V.

    2014-12-01

    Full Text Available In the article we present a method of cutting logs, containing several quality areas. For this method, a mathematical model was developed to determine the volumetric output of lumber, which allows to determine the geometric dimensions of the lumber cut from the different quality areas separated concentric circles, depending on size and quality characteristics of logs

  16. On the Construction of Mohr Stress Circle and a Graphic Method in Representing the Stress Components on Different Oblique Planes

    Institute of Scientific and Technical Information of China (English)

    Zhubin He; Z. R. Wang; Kunpeng Kang

    2004-01-01

    The Mohr stress circle for three-dimensional stress is usually determined by equations,which is lack of intuitionistic meanings and difficult to understand. In this paper, the construction of Mohr stress circle is illustrated directly by numerical method. The shortcoming of Mohr stress circle in representing the stress components on different oblique planes for three-dimensional stress is analyzed. A three-dimensional figure is given to describe the variation of normal and shear stress on different oblique planes at one point for the first time.

  17. Strange non-chaotic attractors in quasiperiodically forced circle maps: Diophantine forcing

    CERN Document Server

    Jäger, T

    2011-01-01

    We study parameter families of quasiperiodically forced (qpf) circle maps with Diophantine frequency. Under certain C1-open conditions concerning their geometry, we prove that these families exhibit nonuniformly hyperbolic behaviour, often referred to as the existence of strange nonchaotic attractors, on parameter sets of positive measure. This provides a nonlinear version of results by Young on quasiperiodic SL (2;R)-cocycles and complements previous results in this direction which hold for sets of frequencies of positive measure, but did not allow for an explicit characterisation of these frequencies. As an application, we study a qpf version of the Arnold circle map and show that the Arnold tongue corresponding to rotation number 1/2 collapses on an open set of parameters. The proof requires to perform a parameter exclusion with respect to some twist parameter and is based on the multiscale analysis of the dynamics on certain dynamically defined critical sets. A crucial ingredient is to obtain good control...

  18. An Investigation of Seventh Grade Students’ Performances on Conceptual, Procedural and Graphical Problems Regarding Circles

    Directory of Open Access Journals (Sweden)

    Lütfi İncikabı

    2015-04-01

    Full Text Available The purpose of this study is to determine seventh grade students’ preferences among the procedural, conceptual and graphical questions in the subject of circles, to define their success levels in their preferences, and to compare students’ success levels in one question type with their performances in other question types. The methodology adopted during this research was case study. Based on criterion-based purposive sampling strategy, 98 middle school students were selected as the participants. Data were collected through an achievement test consisting of nine questions (three per question type. The results obtained from the study indicated that students mostly preferred graphical question types. Moreover, majority of students could not succeeded high levels in their preferred question types. In addition, the students performed better in graphical question types; however, the failure in procedural question types was remarkable. Keywords: Multiple representations, middle school students, mathematics education, circles

  19. Analysis of the symmetric configuration of the circle of Willis in a series of autopsied corpses

    Directory of Open Access Journals (Sweden)

    Stojanović Nebojša

    2015-01-01

    Full Text Available Introduction. The forming of the blood vessels network configuration at the base of the brain and interconnecting of blood vessels during the embryogenesis is directly related to the phylogenetic development of the brain and brain structures. A blood vessel configuration at the brain base, in the form of a ring or a hexagon, stands in direct relation to the perfusion needs of certain parts of the brain during its primary differentiation. The aim of this paper was to determine the incidence of certain blood vessel configurations at the base of the brain and understanding their symmetry or asymmetry. Methods. Analysis of the blood vessels at the base of the brain was performed on the autopsied subjects. The object of observation was the anterior segment of the circle of Willis consisting of C1- a. carotis interna (ICA, above a. communicaus posterior (PcoA, the segment A1 a. cerebri anterior (ACA from a. carotis interna bifurcation to the a. communicans anterior (AcoA and a. communicans anterior itself, as well as the posterior segment consisting of PcoA and the segment P1 - a. cerebri posterior (PCA from the a. basilaris bifurcation to the PcoA. For the purpose of grouping the findings, the four basic configuration types of the circle of Willis were identified based on its symmetry or asymmetry. Type-A (symmetric circle of Willis, type-B (asymmetric circle of Willis' due to the unilateral hypoplastic A1-ACA; type-C (symmetric circle of Willis with bilateral symmetric changes on PcoA and type-D (asymmetric circle of Willis due to the asymmetric changes on PcoA. Results. Autopsy was performed on 56 corpses. A total of 41 (73.2% subjects were recorded with a symmetric configuration of the circle of Willis', of which 27 (48.2% subjects had type A and 14 (25% type C. The asymmetric configuration was present in 15 (26.8% subjects, of whom 9 (16% had type B and 6 (10.8% type D. The symmetric Willis group (73.2% did not have a homogeneous finding that

  20. Pythagorean hodograph spline spirals that match G3 Hermite data from circles

    KAUST Repository

    Li, Zhong

    2015-04-01

    A construction is given for a G3 piecewise rational Pythagorean hodograph convex spiral which interpolates two G3 Hermite data associated with two non-concentric circles, one being inside the other. The spiral solution is of degree 7 and is the involute of a G2 convex curve, referred to as the evolute solution, with prescribed length, and composed of two PH quartic curves. Conditions for G3 continuous contact with circles are then studied and it turns out that an ordinary cusp at each end of the evolute solution is required. Thus, geometric properties of a family of PH polynomial quartics, allowing to generate such an ordinary cusp at one end, are studied. Finally, a constructive algorithm is described with illustrative examples.