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Sample records for group discussions key

  1. Group key management

    Energy Technology Data Exchange (ETDEWEB)

    Dunigan, T.; Cao, C.

    1997-08-01

    This report describes an architecture and implementation for doing group key management over a data communications network. The architecture describes a protocol for establishing a shared encryption key among an authenticated and authorized collection of network entities. Group access requires one or more authorization certificates. The implementation includes a simple public key and certificate infrastructure. Multicast is used for some of the key management messages. An application programming interface multiplexes key management and user application messages. An implementation using the new IP security protocols is postulated. The architecture is compared with other group key management proposals, and the performance and the limitations of the implementation are described.

  2. Focus group discussions

    CERN Document Server

    Hennink, Monique M

    2014-01-01

    The Understanding Research series focuses on the process of writing up social research. The series is broken down into three categories: Understanding Statistics, Understanding Measurement, and Understanding Qualitative Research. The books provide researchers with guides to understanding, writing, and evaluating social research. Each volume demonstrates how research should be represented, including how to write up the methodology as well as the research findings. Each volume also reviews how to appropriately evaluate published research. Focus Group Discussions addresses the challenges associated with conducting and writing focus group research. It provides detailed guidance on the practical and theoretical considerations in conducting focus group discussions including: designing the discussion guide, recruiting participants, training a field team, moderating techniques and ethical considerations. Monique Hennink describes how a methodology section is read and evaluated by others, such as journal reviewers or ...

  3. Summaries of group discussions

    Science.gov (United States)

    Jensen, L. D.

    1972-01-01

    Group discussions following the presentations of reports on the remote sensing of Chesapeake Bay resources are presented. The parameters to be investigated by the remote sensors and the specifications of the sensors are described. Specific sensors for obtaining data on various aspects of the ecology are identified. Recommendations for establishing a data bank and additional efforts to obtain increased understanding of the ecology are submitted.

  4. Group discussion improves lie detection

    National Research Council Canada - National Science Library

    Nadav Klein; Nicholas Epley

    2015-01-01

    ... identify when a person is lying. These experiments demonstrate that the group advantage in lie detection comes through the process of group discussion, and is not a product of aggregating individual opinions...

  5. Small group discussion: Students perspectives.

    Science.gov (United States)

    Annamalai, Nachal; Manivel, Rajajeyakumar; Palanisamy, Rajendran

    2015-08-01

    Various alternative methods are being used in many medical colleges to reinforce didactic lectures in physiology. Small group teaching can take on a variety of different tasks such as problem-solving, role play, discussions, brainstorming, and debate. Research has demonstrated that group discussion promotes greater synthesis and retention of materials. The aims of this study were to adopt a problem-solving approach by relating basic sciences with the clinical scenario through self-learning. To develop soft skills, to understand principles of group dynamics, and adopt a new teaching learning methodology. Experimental study design was conducted in Phase I 1(st) year medical students of 2014-2015 batch (n = 120). On the day of the session, the students were grouped into small groups (15 each). The session started with the facilitator starting off the discussion. Feedback forms from five students in each group was taken (n = 40). A five point Likert scale was used ranging from strongly agree to strongly disagree. Data were analyzed using IBM SPSS Statistics for Windows, Version 21.0. Armonk, NY: IBM Corp. Our results show that 70% of the students opined that small group discussion were interactive, friendly, innovative, built interaction between teacher and student. Small group discussion increased their thought process and helped them in better communication. The small group discussion was interactive, friendly, and bridged the gap between the teacher and student. The student's communication skills are also improved. In conclusion, small group discussion is more effective than the traditional teaching methods.

  6. Group discussion improves lie detection.

    Science.gov (United States)

    Klein, Nadav; Epley, Nicholas

    2015-06-16

    Groups of individuals can sometimes make more accurate judgments than the average individual could make alone. We tested whether this group advantage extends to lie detection, an exceptionally challenging judgment with accuracy rates rarely exceeding chance. In four experiments, we find that groups are consistently more accurate than individuals in distinguishing truths from lies, an effect that comes primarily from an increased ability to correctly identify when a person is lying. These experiments demonstrate that the group advantage in lie detection comes through the process of group discussion, and is not a product of aggregating individual opinions (a "wisdom-of-crowds" effect) or of altering response biases (such as reducing the "truth bias"). Interventions to improve lie detection typically focus on improving individual judgment, a costly and generally ineffective endeavor. Our findings suggest a cheap and simple synergistic approach of enabling group discussion before rendering a judgment.

  7. National GAP Conference 2007-Discussion Groups Report

    Science.gov (United States)

    Ratz, Joan M.; Lamb, Berton Lee

    2010-01-01

    We led two discussion groups during the 2007 National GAP Conference. These discussion groups provided information to help develop a survey of National Gap Analysis Program (GAP) data users. One group discussed technical issues, and the second group discussed the use of GAP data for decisionmaking. Themes emerging from the technical issues group included concerns about data quality, need for information on how to use data, and passive data distribution. The decisionmaking discussion included a wide range of topics including the need to understand presentation of information, the need to connect with and understand users of data, the revision of GAP's mission, and the adaptability of products and data. The decisionmaking group also raised concerns regarding technical issues. One conclusion is that a deep commitment to ongoing information transfer and support is a key component of success for the GAP program.

  8. Authenticated Key Agreement in Group Settings

    Institute of Scientific and Technical Information of China (English)

    LI Ming; WANG Yong; GU Da-wu; BAI Ying-cai

    2006-01-01

    An enhanced definition of implicit key authentication and a secure group key agreement scheme from pairings are presented. This scheme combines the merits of group public key and key trees to achieve a communication-efficient and authenticated group key agreement protocol. Besides, it avoids dependence on signature or MAC by involving member's long-term keys and short-term keys in the group key. Furthermore, the idea behind this design can be employed as a general approach to extend the authenticated two-party Diffie-Hellman protocols to group settings.

  9. Interteaching: Discussion Group Size and Course Performance

    Science.gov (United States)

    Truelove, Jacob C.; Saville, Bryan K.; Van Patten, Ryan

    2013-01-01

    Researchers have yet to examine whether discussion group size affects student performance in an interteaching-based course. In the current study, we addressed this question by manipulating discussion group size (smaller groups of 2 students vs. larger groups of 4 students) across 2 sections of an undergraduate psychology course. We found no…

  10. Dr. Irvin Yalom Discusses Group Psychotherapy.

    Science.gov (United States)

    Forester-Miller, Holly

    1989-01-01

    In this interview, Dr. Irvin Yalom, director of the Adult Psychiatry Clinic at Stanford University School of Medicine, discusses his beginnings as a group psychotherapist, current issues in group work, and the future of group work. (Author/TE)

  11. Enhancing Understanding and Interest through Group Discussion

    Science.gov (United States)

    Cannon, Patrick

    2006-01-01

    Group discussion allows students to learn how to "talk to someone." Through group discussion, students can acquire or refine a broad range of attributes, from basic oratory skills to a more sophisticated development of communicative competence to embracing and valuing dialogic interchange and reflexivity. In this article, the author explains how…

  12. Teaching Organizational Behavior Through Discussion Groups

    Science.gov (United States)

    Fineman, Stephen; Hamblin, Anthony C.

    1978-01-01

    An educational experiment in teaching organizational behavior to undergraduates in England is reported, with focus on the value and limitations of a systematic form of discussion-group learning based upon a framework outlined by Fawcett Hill. (LBH)

  13. Group reports. The recommendations proposed by the seven discussion groups

    NARCIS (Netherlands)

    NN,

    1989-01-01

    GROUP 1 — Discussion leader S.H. Sohmer — Organization and the ideal format of a large Flora (over 10,000 species) The Working Group first recognized that there are really two major categories of Flora projects serving quite different needs in the Malesian region: the local/national projects that

  14. Security Analysis of Broadcaster Group Key Exchange Protocols

    Institute of Scientific and Technical Information of China (English)

    LI Li; ZHANG Huanguo

    2006-01-01

    Group key exchange protocols are basic protocols to provide privacy and integrity in secure group communication. This paper discusses the security of one type of group key exchange protocols and defines the kind of protocols as broadcaster group protocols. It points out two attacks on this kind of protocols. The first attack can be avoided by using fresh values in each action during one session of the group protocol. The second attack should be related with concrete application. It also proposes a dynamic key agreement protocol as an example of solutions at the last part of the paper.

  15. Noncoherent capacity of secret-key agreement with public discussion

    KAUST Repository

    Agrawal, Anurag

    2011-09-01

    We study the noncoherent capacity of secret-key agreement with public discussion over independent identically distributed (i.i.d.) Rayleigh fading wireless channels, where neither the sender nor the receivers have access to instantaneous channel state information (CSI). We present two results. At high signal-to-noise ratio (SNR), the secret-key capacity is bounded in SNR, regardless of the number of antennas at each terminal. Second, for a system with a single antenna at both the legitimate and the eavesdropper terminals and an arbitrary number of transmit antennas, the secret-key capacity-achieving input distribution is discrete, with a finite number of mass points. Numerically we observe that at low SNR, the capacity achieving distribution has two mass points with one of them at the origin. © 2011 IEEE.

  16. Assessing clinical competency: reports from discussion groups.

    Science.gov (United States)

    Turnwald, Grant; Stone, Elizabeth; Bristol, David; Fuentealba, Carmen; Hardie, Lizette; Hellyer, Peter; Jaeger, Laurie; Kerwin, Sharon; Kochevar, Deborah; Lissemore, Kerry; Olsen, Christopher; Rogers, Kenita; Sabin, Beth; Swanson, Cliff; Warner, Angeline

    2008-01-01

    This report describes proposed new models for assessment of eight of the nine clinical competencies the American Veterinary Medical Association Council on Education requires for accreditation. The models were developed by discussion groups at the Association of American Veterinary Medical Colleges' Clinical Competency Symposium. Clinical competencies and proposed models (in parentheses) are described. Competency 1: comprehensive patient diagnosis (neurologic examination on a dog, clinical reasoning skills); Competency 2: comprehensive treatment planning (concept mapping, computerized case studies); Competency 3: anesthesia, pain management (student portfolio); Competency 4: surgery skills (objective structured clinical examination, cased-based examination, "super dog" model); Competency 5: medicine skills (clinical reasoning and case management, skills checklist); Competency 6: emergency and intensive care case management (computerized case study or scenario); Competency 7: health promotion, disease prevention/biosecurity (360 degrees evaluation, case-based computer simulation); Competency 8: client communications and ethical conduct (Web-based evaluation forms, client survey, communicating with stakeholders, telephone conversation, written scenario-based cases). The report also describes faculty recognition for participating in clinical competency assessments.

  17. Discussions and Suggestions on Dietary Survey of Key Population Group of Nuclear Facilities%核设施关键人群组膳食调查中若干问题的讨论与建议

    Institute of Scientific and Technical Information of China (English)

    谭承军; 熊小伟; 魏国良; 王韶伟; 商照荣

    2015-01-01

    通过对核设施关键人群组膳食调查方法局限性与现存问题的梳理,认为关键人群组膳食调查方法单一、调查内容不统一、关键人群组界定和认识有待于完善,提出如下建议:年龄组划分为婴儿(≤1岁)、儿童(2~6岁)、少年(7~17岁)和成人组(>17岁);膳食调查中粮食类细化到谷类、薯类和豆类,蔬菜至少细分为叶类和非叶类蔬菜;海产品细化到鱼类、甲壳类、软体类和藻类。在缺乏关键人群组食物消费量时,建议采用厂址半径5 km范围内膳食调查数据变化范围值的95%作为摄入率代替可能关键人群组的食物消费量。%By analyzing the dietary survey methods of key population groups of nuclear facilities, the paper argues that the current methods are too simple, the survey content is not consistent, and that the identification of key groups still need to be improved. The following suggestions are raised:the age groups are divided into infant (≤1 years), child (2~6 years old), teenager (7~17 years old) and adult group ( > 17 years);staple food are divided into frumentum, tubers and beans; vegetables are divided into leaf vegetables and non-leaf vegetables;and sea food are divided into fish, crustacean, mollusks and algae. In case of the absence of key groups’ diet amount data, it is suggested that 95% of the resulted amount range within 5 km of the facility is used.

  18. Machiavellianism, Discussion Time, and Group Shift

    Science.gov (United States)

    Lamm, Helmut; Myers, David G.

    1976-01-01

    Social-emotional and rational-cognitive explanations of group risky shift on choice dilemmas (hypothetical life situations) were evaluated by comparing shift in groups of low Mach (emotional) and high Mach (non-emotional) subjects. Effects of Machiavellian beliefs on social functioning are examined. Group composition was not observed to affect…

  19. Summary of Study Group Session Discussions

    Science.gov (United States)

    1983-01-01

    The relationship between gravitational physiology and calcium metabolism is examined. The role of gravity on the problems of bone response, low gravity environments, calcium in plants, and the potential in animal systems for alterations in nerve and muscle function as variations in extracellular calcium levels occurred are discussed. Innovative materials for experiments on interactions between calcium and gravity, experiments that could utilize ionospheres or calcium-measuring dyes, and specific gravity calcium experiments are also addressed.

  20. The influence of ethnic group composition on focus group discussions

    National Research Council Canada - National Science Library

    Greenwood, Nan; Ellmers, Theresa; Holley, Jess

    2014-01-01

    ... of importance to them in their own words [2]. They are particularly useful for gaining insight from minority ethnic groups [1, 3] because of their sensitivity to cultural variables [2, 4]. One of the main differences between focus groups and one-to-one interviews is the interaction between participants. Focus group participants can...

  1. [Key ethic discussions in hospice/palliative care].

    Science.gov (United States)

    Jusić, Anica

    2008-12-01

    The goal of palliative care is to provide the best possible quality of life for patients and their families in the process of dying as well as before, during the course of illness. Emphasis is on the role of team approach in every aspect of patient care. The moral principles of sacredness of life and the right of personal autonomy may occasionally come in conflict. The basic principle of the respect of life prohibits killing, which has been accepted in one way or another by all societies - for the reasons of survival. Similar to this, modern morality supports the principle of respecting autonomy and self-management based on informed, conscious personality of an individual. Still, if the needs of another person appear to be more important or desirable than reaching certain individual goals, then the right of an individual regarding autonomy may be legitimately limited. Decisions on not applying or terminating certain procedures must be based on thorough discussion and consideration of the nature and expected result of treatment. If the patient is not competent, then the discussion should involve a team providing care for the patient and a representative of the patient. When the physician and the team can clearly see that unfavorable effects of treatment will outweigh therapeutic benefits, then, according to medical ethics of the respecting beneficiary, the team is not obliged to provide that form of treatment. Except for palliative care, there is no medical treatment that is always obligatory. A physician that does not accept the patient's request to be killed does not limit the patient's autonomy. Autonomy is self-management and capability of the patient to kill him/herself is not limited by the physician's refusal to do so. Even in those cases when patients for various reasons say that death will be a relief, it does not mean that the physician is obliged to terminate life. The superior obligation of physicians is to alleviate pain. If euthanasia would be legal

  2. Simulating social dilemmas: promoting cooperative behavior through imagined group discussion.

    Science.gov (United States)

    Meleady, Rose; Hopthrow, Tim; Crisp, Richard J

    2013-05-01

    A robust finding in social dilemmas research is that individual group members are more likely to act cooperatively if they are given the chance to discuss the dilemma with one another. The authors investigated whether imagining a group discussion may represent an effective means of increasing cooperative behavior in the absence of the opportunity for direct negotiation among decision makers. Five experiments, utilizing a range of task variants, tested this hypothesis. Participants engaged in a guided simulation of the progressive steps required to reach a cooperative consensus within a group discussion of a social dilemma. Results support the conclusion that imagined group discussion enables conscious processes that parallel those underlying the direct group discussion and is a strategy that can effectively elicit cooperative behavior. The applied potential of imagined group discussion techniques to encourage more socially responsible behavior is discussed. PsycINFO Database Record (c) 2013 APA, all rights reserved

  3. The Effects of Unstructured Group Discussion on Ethical Judgment

    Science.gov (United States)

    Richards, Clinton H.; Alder, G. Stoney

    2014-01-01

    The authors examine the effects of shared information and group discussion on ethical judgment when no structure is imposed on the discussion to encourage ethical considerations. Discussants were asked to identify arguments for and against a variety of business behaviors with ethical implications. A group moderator solicited and recorded arguments…

  4. The Effects of Unstructured Group Discussion on Ethical Judgment

    Science.gov (United States)

    Richards, Clinton H.; Alder, G. Stoney

    2014-01-01

    The authors examine the effects of shared information and group discussion on ethical judgment when no structure is imposed on the discussion to encourage ethical considerations. Discussants were asked to identify arguments for and against a variety of business behaviors with ethical implications. A group moderator solicited and recorded arguments…

  5. Learning Physics in Small-Group Discussions--Three Examples

    Science.gov (United States)

    Benckert, Sylvia; Pettersson, Sune

    2008-01-01

    This article reports on an investigation of students learning of physics during group discussions around context-rich problems in introductory physics courses at university level. We present the results from video recordings of student groups solving three different problems. We found that group discussions around physics problems can lead to…

  6. Increasing Social Presence in Online Learning through Small Group Discussions

    Science.gov (United States)

    Akcaoglu, Mete; Lee, Eunbae

    2016-01-01

    Social presence is difficult to achieve, but an imperative component of online learning. In this study, we investigated the effect of group size on students' perceptions of social presence in two graduate-level online courses, comparing small group versus whole class discussions. Our results indicated that when in small group discussions, students…

  7. An Efficient Group Key Management Using Code for Key Calculation for Simultaneous Join/Leave: CKCS

    OpenAIRE

    Melisa Hajyvahabzadeh; Elina Eidkhani; S. Anahita Mortazavi; Alireza Nemaney Pour

    2012-01-01

    This paper presents an efficient group key management protocol, CKCS (Code for Key Calculation in Simultaneous join/leave) for simultaneous join/leave in secure multicast. This protocol is based on logical key hierarchy. In this protocol, when new members join the group simultaneously, server sends only thegroup key for those new members. Then, current members and new members calculate the necessary keys by node codes and one-way hash function. A node code is a random number which is assigned...

  8. Focus group discussion: a tool for health and medical research.

    Science.gov (United States)

    Wong, L P

    2008-03-01

    Focus group discussion is a research methodology in which a small group of participants gather to discuss a specified topic or an issue to generate data. The main characteristic of a focus group is the interaction between the moderator and the group, as well as the interaction between group members. The objective is to give the researcher an understanding of the participants' perspective on the topic in discussion. Focus groups are rapidly gaining popularity in health and medical research. This paper presents a general introduction of the use of focus groups as a research tool within the context of health research, with the intention of promoting its use among researchers in healthcare. A detailed methodology for the conduct of focus groups and analysis of focus group data are discussed. The potentials and limitations of this qualitative research technique are also highlighted.

  9. The group discussion effect: integrative processes and suggestions for implementation.

    Science.gov (United States)

    Meleady, Rose; Hopthrow, Tim; Crisp, Richard J

    2013-02-01

    One of the most consistent findings in experimental social dilemmas research is the positive effect group discussion has on cooperative behavior. At a time when cooperation and consensus is critical to tackle global problems, ranging from debt to deforestation, understanding the dynamics of group discussion is a pressing need. Unfortunately, research investigating the underlying processes and implementation of the effect has been inconclusive. The authors present a critical review of existing explanations and integrate these perspectives into a single process model of group discussion, providing a more complete theoretical picture of how interrelated factors combine to facilitate discussion-induced cooperation. On the basis of this theoretical analysis, they consider complimentary approaches to the indirect and feasible implementation of group discussion. They argue that such strategies may overcome the barriers to direct discussion observed across a range of groups and organizations.

  10. Searching for Intertextual Connections in Small Group Text Discussion

    Science.gov (United States)

    Chi, Feng-ming

    2012-01-01

    This paper reports the sources for and intentions of intertextuality made by 10 groups of Taiwanese university students in the process of discussing two American stories. Two types of data, small group text discussions and oral interviews, were gathered. The results indicated that participants used diverse sources of intertextual links, and with…

  11. The power of talk : Developing discriminatory group norms through discussion

    NARCIS (Netherlands)

    Smith, Laura G. E.; Postmes, Tom

    Research has shown that group discussion can increase intergroup prejudice and discrimination. However, we know little about the process by which discussion has this effect. Therefore, four studies were conducted in a real-world context to investigate this process. Results suggest that discussing a

  12. The power of talk : Developing discriminatory group norms through discussion

    NARCIS (Netherlands)

    Smith, Laura G. E.; Postmes, Tom

    2011-01-01

    Research has shown that group discussion can increase intergroup prejudice and discrimination. However, we know little about the process by which discussion has this effect. Therefore, four studies were conducted in a real-world context to investigate this process. Results suggest that discussing a

  13. Literature Discussion Groups: The Role of Teacher Talk in Discussing Social Issues

    Science.gov (United States)

    Guay, Mary

    2013-01-01

    The purpose of this study was to examine how teacher talk influenced the way issues of race, culture, and disability were addressed in literature discussion groups. Discussions of one teacher with two groups of students, of varying reading levels, were studied. The research questions were: 1) How does the teacher's perspective on the students…

  14. The power of talk: developing discriminatory group norms through discussion.

    Science.gov (United States)

    Smith, Laura G E; Postmes, Tom

    2011-06-01

    Research has shown that group discussion can increase intergroup prejudice and discrimination. However, we know little about the process by which discussion has this effect. Therefore, four studies were conducted in a real-world context to investigate this process. Results suggest that discussing a negative societal stereotype (relative to individual rumination in Studies 1 and 3 and alternative discussions in Studies 2 and 3) increases intentions to engage in discrimination against the out-group target of the stereotype. This is mediated by the formation of an in-group norm which supports discrimination (Study 1) and the extent to which the discussion validates the stereotype (Study 2). A fourth study manipulated the extent to which consensus on the negative stereotype was reached through discussion. When the discussion ended in consensus, participants have greater intention to undertake collective action against the stereotyped out-group, mediated by a congruent in-group norm. These results provide evidence that the process by which discussion increases intergroup discrimination is via the formation of discriminatory local group norms. ©2010 The British Psychological Society.

  15. Public key cryptosystem and a key exchange protocol using tools of non-abelian group

    Directory of Open Access Journals (Sweden)

    H. K. Pathak,

    2010-07-01

    Full Text Available Public Key Cryptosystems assure privacy as well as integrity of the transactions between two parties. The sizes of the keys play an important role. The larger the key the harder is to crack a block ofencrypted data. We propose a new public key cryptosystem and a Key Exchange Protocol based on the generalization of discrete logarithm problem using Non-abelian group of block upper triangular matrices of higher order. The proposed cryptosystem is efficient in producing keys of large sizes without the need of large primes. The security of both the systems relies on the difficulty of discrete logarithms over finite fields.

  16. Facilitating Meaningful Discussion Groups in the Primary Grades

    Science.gov (United States)

    Moses, Lindsey; Ogden, Meridith; Kelly, Laura Beth

    2015-01-01

    This Teaching Tips describes a yearlong process of facilitating meaningful discussion groups about literature with first-grade students in an urban Title I school. At the beginning of the year, the teacher provided explicit instruction in speaking and listening skills to support students with the social skills needed for thoughtful discussion. She…

  17. New Public Key Cryptosystems from Combinatorial Group Theory

    Institute of Scientific and Technical Information of China (English)

    TANG Xueming; WANG Xiaofei; HONG Fan; CUI Guohua

    2006-01-01

    External direct product of some low layer groups such as braid groups and general Artin groups, with a kind of special group action on it, provides a secure cryptographic computation platform, which can keep secure in the quantum computing epoch. Three hard problems on this new platform, Subgroup Root Problem, Multi-variant Subgroup Root Problem and Subgroup Action Problem are presented and well analyzed, which all have no relations with conjugacy. New secure public key encryption system and key agreement protocol are designed based on these hard problems. The new cryptosystems can be implemented in a general group environment other than in braid or Artin groups.

  18. Certificateless Efficient Group Key Management Scheme in Mobile Adhoc Networks

    Directory of Open Access Journals (Sweden)

    Sanjeev Kumar Rana

    2011-03-01

    Full Text Available Securing mobile ad hoc networks (MANETs is a crucial task for their good deployments. One fundamental aspect of providing confidentiality and authentication is key management. While Public Key Infrastructure (PKI based solutions has provided these properties historically, MANETs are resource constrained and benefit from symmetric key encryption. In this paper, we proposed a certificateless efficient group key management scheme (CE-GKMS in MANETs for group confidentiality which uses identity based cryptography for secure multicast group communication. The scheme does not need PKI in which mobile nodes needs large storage to carry certificates and to perform public key cryptography based large computation. The scheme introduced a new idea of hiding the public keys and making them visible only to the trusted nodes which not only make it difficult for cryptanalyst to crack the private information but also permit to keep small value of encryption and decryption component causes asymmetric cryptography operation faster. For scalability and dynamic reconfigurability, we divide the network into groups. Leaders in these groups securely communicate with each other to agree on group key in response to membership change and member mobility-induced events. The performance results prove the effectiveness of our proposed key management scheme CE-GKMS.

  19. Values and Commitments Underlying Discussion. Professional Development on Discussion: Group Images in Action.

    Science.gov (United States)

    Francis, Eileen

    The Discussion Development Group (DDG) at Moray House College of Education, Scotland, is a resource center designed as an open learning system to provide inservice training, consultancy support, and resources on classroom discussion. A case study involving 17 teachers and recently conducted by the DDG explored features of process innovation and…

  20. Two-Dimensional Key Table-Based Group Key Distribution in Advanced Metering Infrastructure

    Directory of Open Access Journals (Sweden)

    Woong Go

    2014-01-01

    Full Text Available A smart grid provides two-way communication by using the information and communication technology. In order to establish two-way communication, the advanced metering infrastructure (AMI is used in the smart grid as the core infrastructure. This infrastructure consists of smart meters, data collection units, maintenance data management systems, and so on. However, potential security problems of the AMI increase owing to the application of the public network. This is because the transmitted information is electricity consumption data for charging. Thus, in order to establish a secure connection to transmit electricity consumption data, encryption is necessary, for which key distribution is required. Further, a group key is more efficient than a pairwise key in the hierarchical structure of the AMI. Therefore, we propose a group key distribution scheme using a two-dimensional key table through the analysis result of the sensor network group key distribution scheme. The proposed scheme has three phases: group key predistribution, selection of group key generation element, and generation of group key.

  1. Learning What Works: Promoting Small-Group Discussions

    Science.gov (United States)

    DeJarnette, Anna F.; Dao, Jennifer N.; González, Gloriana

    2014-01-01

    Many teachers have designed lessons for students who will be working in groups to discuss and solve a problem. After investing time in constructing an interesting problem, creating strategically designed groups, and introducing the problem carefully, teachers may be left wondering how to help students collaborate to make sense of mathematical…

  2. A Comparative Study of Group Key Management in MANET

    Directory of Open Access Journals (Sweden)

    M. El-Bashary,

    2015-08-01

    Full Text Available A Mobile Ad-Hoc Network (MANET is a self organized network, with no fixed infrastructure, limited resources and limited physical security. Security in such an environment is an essential requirement. Key management is a salient element in MANET security. It is responsible for key generation, storage, distribution, updating, revocation, deleting, and archiving. Key management protocols are classified into symmetric, asymmetric, group, and hybrid. Group key management is a point of interest for researchers with the growing usage of mobile devices and the rising of multicast communication. This paper surveys different approaches in group key management schemes. A comparative study is demonstrated in terms of reliability, computational complexity, storage cost, communication overheads, pre-requirements, security levels, robustness, vulnerabilities, scalability, energy and mobility. Finally, the study concludes the pros and cons of each protocol.

  3. Impact of discussion on preferences elicited in a group setting

    Directory of Open Access Journals (Sweden)

    Milne Ruairidh

    2006-03-01

    Full Text Available Abstract Background The completeness of preferences is assumed as one of the axioms of expected utility theory but has been subject to little empirical study. Methods Fifteen non-health professionals was recruited and familiarised with the standard gamble technique. The group then met five times over six months and preferences were elicited independently on 41 scenarios. After individual valuation, the group discussed the scenarios, following which preferences could be changed. Changes made were described and summary measures (mean and median before and after discussion compared using paired t test and Wilcoxon Signed Rank Test. Semi-structured telephone interviews were carried out to explore attitudes to discussing preferences. These were transcribed, read by two investigators and emergent themes described. Results Sixteen changes (3.6% were made to preferences by seven (47% of the fifteen members. The difference between individual preference values before and after discussion ranged from -0.025 to 0.45. The average effect on the group mean was 0.0053. No differences before and after discussion were statistically significant. The group valued discussion highly and suggested it brought four main benefits: reassurance; improved procedural performance; increased group cohesion; satisfying curiosity. Conclusion The hypothesis that preferences are incomplete cannot be rejected for a proportion of respondents. However, brief discussion did not result in substantial number of changes to preferences and these did not have significant impact on summary values for the group, suggesting that incompleteness, if present, may not have an important effect on cost-utility analyses.

  4. Analysis of the Characteristics of Discussion Materials that Promote Group Discussion in the Medical Humanities.

    Science.gov (United States)

    Ahn, Jae Hee; Jeon, Woo Taek

    2011-12-01

    This study aims to analyze the characteristics of discussion materials that promote student participation in discussions, satisfaction with student instruction, and tutor intervention in the medical humanities. We surveyed 117 premedical students and 7 tutors who attended 4-week group discussions in the medical humanities in 2010. We described the discussion materials using the following 4 characteristics as independent variables: material type, level of understanding, interest, and quantity. Dependent variables were: student participation in the discussion, student instruction satisfaction, and tutor intervention. Correlation analysis, multiple regression analysis, and crosstab were performed using SPSS 15.0. The correlation between the characteristics of the discussion materials differed by grade. When the books were chosen as the discussion material in the instruction of first-year premedical students, the correlation between level of understanding, interest, and quantity was negative. Higher levels of understanding of the material and interest in the material led to an increase in discussion participation among both first- and second-year premedical students. Higher levels of understanding and interest of the discussion material also increased student satisfaction with the instruction, regardless of grade. Finally, levels of understanding of the material affected the degree of tutor intervention. Tutors intervened more often in discussions with first-year premedical students than with second-year premedical students. Differences in grades and the understanding of the discussion material should be considered when choosing discussion materials. Further study is required to continue the development of the discussion model and improve methods of facilitate discussion among students in the medical humanities.

  5. A dynamic,secure,and efficient group key agreement protocol

    Institute of Scientific and Technical Information of China (English)

    ZHENG Shihui; WANG Shaohui; ZHANG Guoyan

    2007-01-01

    The key challenge of dynamic peer communication is how to realize secure and efficient group key management.A two rounds key agreement protocol for dynamic peer group (DPG) is proposed in this paper.The protocol,which was obtained by combining the E1Gamal encryption scheme with the E1Gamal signature scheme,is efficient and simple.The protocol is proven secure against passive attack by using indistinguishable method.Moreover,both perfect forward secrecy (PFS) and key independence (KI) were achieved.Because the protocol is based on the broadcast channel,it is also suitable for key agreement in wireless communications,especially in ad-hoc networks.

  6. A Secure Session Key Distribution Scheme for Group Communications

    Institute of Scientific and Technical Information of China (English)

    LIN Ren-hung; JAN Jinn-ke

    2006-01-01

    In a secure group communication system, messages must be encrypted before being transmitted to group members to prevent unauthorized access. In many secure group communication schemes, whenever a member leaves or joins the group, group center (GC) immediately changes the common encryption key and sends the new key to all valid members for forward and backward secrecy. If valid members are not on-line, they will miss the rekeying messages and will not be able to decrypt any ciphertext. Therefore, group members must be able to store the state of the system. In some applications, like global positioning systems (GPS) or pay-per-view systems, it is not reasonable to ask group members to stay on-line all the time and save the changes to the system. A hierarchical binary tree-based key management scheme are proposed for a secure group communication. This scheme reduces the key storage requirement of GC to a constant size and the group members are not required to be on-line constantly (stateless).

  7. How Introverts versus Extroverts Approach Small-Group Argumentative Discussions.

    Science.gov (United States)

    Nussbaum, E. Michael

    2002-01-01

    Explored in two studies disparities between how students with different degrees of extroversion and introversion engaged in small-group discussions requiring construction and critique of arguments. Found that extroverted students exhibited a greater tendency to use conflictual discourse, whereas introverted students worked with one another…

  8. Academic Discourse Socialization through Small-Group Discussions

    Science.gov (United States)

    Ho, Mei-ching

    2011-01-01

    This study examines the nature of small-group discussion and explores how it fosters oral academic discourse socialization in a TESOL postgraduate course. The participants included four native-English speaking and six non-native English Speaking postgraduate students at a state university in the U.S. The findings revealed that small-group…

  9. Academic Discourse Socialization through Small-Group Discussions

    Science.gov (United States)

    Ho, Mei-ching

    2011-01-01

    This study examines the nature of small-group discussion and explores how it fosters oral academic discourse socialization in a TESOL postgraduate course. The participants included four native-English speaking and six non-native English Speaking postgraduate students at a state university in the U.S. The findings revealed that small-group…

  10. Extending Students' Mathematical Thinking during Whole-Group Discussions

    Science.gov (United States)

    Cengiz, Nesrin; Kline, Kate; Grant, Theresa J.

    2011-01-01

    Studies show that extending students' mathematical thinking during whole-group discussions is a challenging undertaking. To better understand what extending student thinking looks like and how teachers' mathematical knowledge for teaching (MKT) supports teachers in their efforts to extend student thinking, the teaching of six experienced…

  11. Lexical Bundles: Facilitating University "Talk" in Group Discussions

    Science.gov (United States)

    Heng, Chan Swee; Kashiha, Hadi; Tan, Helen

    2014-01-01

    Group discussion forms an integral language experience for most language learners, providing them with an opportunity to express themselves in a naturalistic setting. Multi-word expressions are commonly used and one of them is lexical bundles. Lexical bundles are types of extended collocations that occur more commonly than we expect; they are…

  12. Extending Students' Mathematical Thinking during Whole-Group Discussions

    Science.gov (United States)

    Cengiz, Nesrin; Kline, Kate; Grant, Theresa J.

    2011-01-01

    Studies show that extending students' mathematical thinking during whole-group discussions is a challenging undertaking. To better understand what extending student thinking looks like and how teachers' mathematical knowledge for teaching (MKT) supports teachers in their efforts to extend student thinking, the teaching of six experienced…

  13. An efficient scalable key management scheme for secure group communication

    Institute of Scientific and Technical Information of China (English)

    ZHANG Jun; GU Da-wu; MA Fan-yuan; BAI Ying-cai

    2006-01-01

    Several multicast key management schemes such as those proposed by Wallner et al and Wong et al are based on a multilevel, logical hierarchy (or tree) of key-encrypting keys. When used in conjunction with a reliable multicast infrastructure, this approach results in a highly efficient key update mechanism in which the number of multicast messages transmitted upon a membership update is proportional to the depth of the tree,which is logarithmic to the size of the secure multicast group. But this is based on the hypothesis that the tree is maintained in a balanced manner. This paper proposes a scalable rekeying scheme-link-tree structure for implementing secure group communication. Theoretical calculation and experimentation show that this scheme has better performance than the tree structure and the star structure, and at the same time still keep the link-tree structure balanced.

  14. Forming a Turbomachinery Seals Working Group - An Overview and Discussion

    Science.gov (United States)

    Proctor, Margaret P.

    2007-01-01

    A proposal to form a Turbomachinery Seals Working Group is discussed. Survey responses regarding the purpose, membership, and meeting frequency are presented as well as the areas of expertise and experience of the respondents. The types of seals used, designed, or sold, current work, and technical challenges of turbomachinery seals, their materials, analysis, geometry, manufacturing, maintenance, testing, and incorporation into engine systems are also presented.

  15. Supervised Group Discussion To Teach Investigation Of An Epidemic

    Directory of Open Access Journals (Sweden)

    Soudarssanane M.B

    1994-01-01

    Full Text Available The topic of investigation of an epidemic was taught to three successive batches of medical students using the data of an actual local outbreak of gastro â€" enteritis. The method used was supervised group discussion using audio â€" visual aids. The objectives achieved about the conduct of the sessions and the suggestions given by the students for improvement have also been highlighted.

  16. Discussions of Fatherhood in Male Batterer Treatment Group

    Directory of Open Access Journals (Sweden)

    Anu Veteläinen

    2013-06-01

    Full Text Available The aim of this study was to examine how men who have perpetrated violence toward their partners and participated in batterer group talked about being a father and how they perceived their own fatherhood. The discussion in the group was analyzed qualitatively by using the methods of content analysis. In traditional fatherhood, they talked about avoidant, passiveness, distant, indifference, and authoritative controlling ways of acting. These men also created an image of themselves as active and caring fathers, thus including empathy and nurture in the concept of fatherhood. This new fatherhood was considered an achieved goal and an objective for the men as being a father. Talking about fatherhood in these groups is important as fatherhood and relations to children are both an important motivator toward nonviolence.

  17. The ethics of research using electronic mail discussion groups.

    Science.gov (United States)

    Kralik, Debbie; Warren, Jim; Price, Kay; Koch, Tina; Pignone, Gino

    2005-12-01

    The aim of this paper is to identify and discuss the ethical considerations that have confronted and challenged the research team when researchers facilitate conversations using private electronic mail discussion lists. The use of electronic mail group conversations, as a collaborative data generation method, remains underdeveloped in nursing. Ethical challenges associated with this approach to data generation have only begun to be considered. As receipt of ethics approval for a study titled; 'Describing transition with people who live with chronic illness' we have been challenged by many ethical dilemmas, hence we believe it is timely to share the issues that have confronted the research team. These discussions are essential so we can understand the possibilities for research interaction, communication, and collaboration made possible by advanced information technologies. Our experiences in this study have increased our awareness for ongoing ethical discussions about privacy, confidentiality, consent, accountability and openness underpinning research with human participants when generating data using an electronic mail discussion group. We describe how we work at upholding these ethical principles focusing on informed consent, participant confidentiality and privacy, the participants as threats to themselves and one another, public-private confusion, employees with access, hackers and threats from the researchers. A variety of complex issues arise during cyberspace research that can make the application of traditional ethical standards troublesome. Communication in cyberspace alters the temporal, spatial and sensory components of human interaction, thereby challenging traditional ethical definitions and calling to question some basic assumptions about identity and ones right to keep aspects of it confidential. Nurse researchers are bound by human research ethics protocols; however, the nature of research by electronic mail generates moral issues as well as ethical

  18. Authenticated group Diffie-Hellman key exchange: theory and practice

    Energy Technology Data Exchange (ETDEWEB)

    Chevassut, Olivier [Catholic Univ. of Louvain, Louvain-la-Neuve (Belgium)

    2002-10-01

    Authenticated two-party Diffie-Hellman key exchange allows two principals A and B, communicating over a public network, and each holding a pair of matching public/private keys to agree on a session key. Protocols designed to deal with this problem ensure A (B resp.)that no other principals aside from B (A resp.) can learn any information about this value. These protocols additionally often ensure A and B that their respective partner has actually computed the shared secret value. A natural extension to the above cryptographic protocol problem is to consider a pool of principals agreeing on a session key. Over the years several papers have extended the two-party Diffie-Hellman key exchange to the multi-party setting but no formal treatments were carried out till recently. In light of recent developments in the formalization of the authenticated two-party Diffie-Hellman key exchange we have in this thesis laid out the authenticated group Diffie-Hellman key exchange on firmer foundations.

  19. Performance study on Gossip-based group key distribution protocal

    Institute of Scientific and Technical Information of China (English)

    Yao Yan; Ma Jiaqing; Zhong Yiping; Zhang Shiyong

    2006-01-01

    Group key distribution is faced with two important problems, i.e. reliability and scalability, to support security multicast for large and dynamic groups. With group member increasing, traditional reliable multicast protocol can not deal with them fully. Gossip-based group key distribution idea for wide-area dissemination was provided. It is based on an gossip-based loss recovery control mechanism. It can provide a probabilistic reliable guarantee for a information dissemination to reach every group member, which can achieve scalability and reliability. To achieve full reliability, three layers protocol model in group key distribution was provided. One is best effect layer, which provides unreliable dissemination. Other is gossip-based loss recovery layer, which provides probabilistic reliable guarantee. Last is vsync-based layer, which provide deterministic loss recovery. We integrate probabilistic loss recovery method with deterministic one. The model possess scalability that probabilistic method has and full reliability prosthesis by vsync-based. To evaluate the effectiveness of gossip technique in scalable and reliable multicast protocols. We have compared gossip protocol with other reliable multicast protocols. Experimental result shows that gossip protocol has better scalability than other.

  20. Social Network Analysis of an Online Melanoma Discussion Group

    Science.gov (United States)

    Durant, Kathleen T.; McCray, Alexa T.; Safran, Charles

    2010-01-01

    We have developed tools to explore social networks that share information in medical forums to better understand the unmet informational needs of patients and family members facing cancer treatments. We define metrics that demonstrate members discussing interleukin-2 receive a stronger response from the melanoma discussion group than a typical topic. The interleukin-2 network has a different topology than the melanoma network, has a higher density, and its members are more likely to have a higher intimacy level with another member and a lower inquisitiveness level than a typical melanoma user. Members are more likely to join the interleukin-2 network to answer a question than in the melanoma network (probability =.2 ±.05 p-value=.001). Within the melanoma network 20% of the questions posed to the community do not get an answer. In the interleukin-2 network, 1.3% of the questions (one question) do not get a response. PMID:21347134

  1. Audience design through social interaction during group discussion.

    Science.gov (United States)

    Rogers, Shane L; Fay, Nicolas; Maybery, Murray

    2013-01-01

    This paper contrasts two accounts of audience design during multiparty communication: audience design as a strategic individual-level message adjustment or as a non-strategic interaction-level message adjustment. Using a non-interactive communication task, Experiment 1 showed that people distinguish between messages designed for oneself and messages designed for another person; consistent with strategic message design, messages designed for another person/s were longer (number of words) than those designed for oneself. However, audience size did not affect message length (messages designed for different sized audiences were similar in length). Using an interactive communication task Experiment 2 showed that as group size increased so too did communicative effort (number of words exchanged between interlocutors). Consistent with a non-strategic account, as group members were added more social interaction was necessary to coordinate the group's collective situation model. Experiment 3 validates and extends the production measures used in Experiment 1 and 2 using a comprehension task. Taken together, our results indicate that audience design arises as a non-strategic outcome of social interaction during group discussion.

  2. The Influence of Group Discussion on Students' Responses and Confidence during Peer Instruction

    Science.gov (United States)

    Brooks, Bill J.; Koretsky, Milo D.

    2011-01-01

    Peer instruction is an active-learning pedagogy in which students answer short, conceptually based questions that are interspersed during instruction. A key element is the group discussion that occurs among students between their initial and final answers. This study analyzes student responses during a modified form of peer instruction in two…

  3. The Influence of Group Discussion on Students' Responses and Confidence during Peer Instruction

    Science.gov (United States)

    Brooks, Bill J.; Koretsky, Milo D.

    2011-01-01

    Peer instruction is an active-learning pedagogy in which students answer short, conceptually based questions that are interspersed during instruction. A key element is the group discussion that occurs among students between their initial and final answers. This study analyzes student responses during a modified form of peer instruction in two…

  4. Dynamic Group Diffie-Hellman Key Exchange under standard assumptions

    Energy Technology Data Exchange (ETDEWEB)

    Bresson, Emmanuel; Chevassut, Olivier; Pointcheval, David

    2002-02-14

    Authenticated Diffie-Hellman key exchange allows two principals communicating over a public network, and each holding public-private keys, to agree on a shared secret value. In this paper we study the natural extension of this cryptographic problem to a group of principals. We begin from existing formal security models and refine them to incorporate major missing details (e.g., strong-corruption and concurrent sessions). Within this model we define the execution of a protocol for authenticated dynamic group Diffie-Hellman and show that it is provably secure under the decisional Diffie-Hellman assumption. Our security result holds in the standard model and thus provides better security guarantees than previously published results in the random oracle model.

  5. Secret-Key Agreement with Public Discussion subject to an Amplitude Constraint

    KAUST Repository

    Zorgui, Marwen

    2016-04-06

    This paper considers the problem of secret-key agreement with public discussion subject to a peak power constraint A on the channel input. The optimal input distribution is proved to be discrete with finite support. To overcome the computationally heavy search for the optimal discrete distribution, several suboptimal schemes are proposed and shown numerically to perform close to the capacity. Moreover, lower and upper bounds for the secret-key capacity are provided and used to prove that the secret-key capacity converges for asymptotic high values of A, to the secret-key capacity with an average power constraint A2. Finally, when the amplitude constraint A is small (A ! 0), the secret-key capacity is proved to be asymptotically equal to the capacity of the legitimate user with an amplitude constraint A and no secrecy constraint.

  6. Online Group Discussion pada Mata Kuliah Teknologi Pembelajaran Fisika

    Directory of Open Access Journals (Sweden)

    Yuberti Yuberti

    2015-10-01

    penawaran akses internet yang menggiurkan demi menarik minat penggunanya. Beberapa fenomena tersebut menunjukkan semakin banyak kalangan yang memanfaatkan internet dan menjadikanya sebagai gaya hidup untuk berintaksi, bersosialisasi, belajar dan mendapatkan informasi. Meluasnya pemanfaatan internet bisa menjadi potensi besar dalam pengembangan pembelajaran dengan sistem online memungkinkan pebelajar untuk mengakses infromasi secara fleksibel tanpa terbatas waktu dan tempat. Diskusi tidak lagi terjadi secara tatap muka, namun dapat terus berlangsung meskipun dalam lingkungan maya. Sebagaimana pelaksanaan metode pembelajaran maya lainnya. Pelaksanaannya diskusi online itu sendiri pada dasarnya mengadopsi dari metode pembelajaran diskusi tatap muka. Kata kunci: online group discussion, teknologi pembelajaran

  7. Groups of Groups: The Role of Group Learning in Building Social Capital. CRLRA Discussion Paper Series.

    Science.gov (United States)

    Kilpatrick, Sue; Bell, Rowena; Falk, Ian

    The Centre for Research and Learning in Regional Australia is investigating the elements of social capital and developing a set of indicators that show when social capital is building. The indicators can be used where groups or organizations with a shared purpose engage in productive interactions that benefit not only the individual member groups…

  8. Key participants in codeveloped technology pose for group picture

    Science.gov (United States)

    1997-01-01

    Following the presentation of the Universal Signal Conditioning Amplifier (USCA), a new piece of technology developed through a National Aeronautics and Space Administration (NASA) partnership with industry, to Kennedy Space Center (KSC) Director Roy Bridges, Jr., key participants in the partnership pose for a group portrait. They are (from left) Bill Larson, NASA; Dr. Pedro Medelius, INET; Roy Bridges, Jr., KSC Director; Ed Gladney and William Saputo, L-3 Communications; Pam Gillespi, representing Congressman Dave Weldon; and Frank Kinney, Technological Research and Development Authority. The USCA is a key component of the codeveloped Automated Data Acquisition System (ADAS) that measures temperature, pressure and vibration at KSC's launch pads. The breakthrough technology is expected to reduce sensor setup and configuration times from hours to seconds. KSC teamed up with Florida's Technological Research and Development Authority and manufacturer L-3 Communications to produce a system that would benefit the aerospace industry and other commercial markets.

  9. Non-coherent capacity of secret-key agreement with public discussion

    KAUST Repository

    Agrawal, Anurag

    2011-06-01

    We study the Rayleigh fading non-coherent capacity of secret-key agreement with public discussion, where neither the sender nor the receivers have access to instantaneous channel state information (CSI) of any channel. We present two results. At high Signal-to-Noise Ratio (SNR), the secret-key capacity is bounded in SNR, regardless of the number of antennas at each terminal. Second, for a system with a single antenna at both the legitimate and the eavesdropper terminals and an arbitrary number of transmit antennas, the secret-key capacity-achieving input distribution is discrete, with a finite number of mass points. Numerically we observe that at low-SNR, the capacity achieving distribution has two mass points with one of them at the origin. © 2011 IEEE.

  10. Increasing Student Participation in Online Group Discussions via Facebook

    Science.gov (United States)

    Miller, Scott T.

    2013-01-01

    A comparison study between two different methods of conducting online discussions in an introductory astronomy course was performed to determine if the use of Facebook as an online discussion tool has an impact on student participation as well as student response time. This study shows that students using Facebook for their online discussions…

  11. Increasing Student Participation in Online Group Discussions via Facebook

    Science.gov (United States)

    Miller, Scott T.

    2013-01-01

    A comparison study between two different methods of conducting online discussions in an introductory astronomy course was performed to determine if the use of Facebook as an online discussion tool has an impact on student participation as well as student response time. This study shows that students using Facebook for their online discussions…

  12. Responding to Financial Reductions Reports from the Discussion Groups.

    Science.gov (United States)

    International Journal of Institutional Management in Higher Education, 1986

    1986-01-01

    The discussions of participants of a workshop concerning the effects of retrenchment on teaching and research, institutional policies, and institutional operations in European higher educational institutions are summarized. (MSE)

  13. Pretest online discussion groups to augment teaching and learning.

    Science.gov (United States)

    Kuhn, Jonathan; Hasbargen, Barbara; Miziniak, Halina

    2010-01-01

    Tests and final examination scores of three semesters of control students in a nursing foundation course were compared with tests and final examination scores of three semesters of participating students. Participating students were offered access to an asynchronous pretest online discussion activity with a faculty e-moderator. While the simplified Bloom's revised taxonomy assisted in creating appropriate preparatory test and final examination questions for pretest online discussion, Salmon's five-stage online method provided direction to the e-moderator on how to encourage students to achieve Bloom's higher-order thinking skills during the pretest online discussions. Statistical analysis showed the pretest online discussion activity had a generally positive impact on tests and final examination scores, when controlling for a number of possible confounding variables, including instructor, cumulative grade point average, age, and credit hours.

  14. 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…

  15. Puerperal Group A Streptococcal Infections: A Case Series and Discussion

    Directory of Open Access Journals (Sweden)

    Mary T. Busowski

    2013-01-01

    Full Text Available Puerperal group A streptococcal infections, a major postpartum killer during the late 19th and early 20th centuries, have become (fortunately rare. We describe a cluster of 4 serious peripartum group A streptococcal infections occurring within the past five years at a single medical center. These cases were not epidemiologically linked and serve to illustrate the continuing risk of these potentially fulminant infections.

  16. A Blueprint for Implementing Small-Group Collaborative Discussions

    Science.gov (United States)

    Beaulieu-Jones, Lisa; Proctor, C. Patrick

    2016-01-01

    The adoption of the Common Core in many states across the country means we need to explore instructional approaches that promote student language use in order to meet many of the complex linguistic standards that comprise the Common Core. In this Teaching Tip, we provide a blueprint for a 4-week collaborative discussion mini-unit that a second…

  17. A Brief Discussion of 5G Key Technologies%5G关键技术浅谈

    Institute of Scientific and Technical Information of China (English)

    田忠驿

    2015-01-01

    对目前讨论较为广泛的一些5G技术进行整理并简要做了介绍,文章中所讨论的5G技术主要集中于无线空口部分,相信未来5G的关键技术也会集中于无线空口部分。%Several key 5G techniques widely discussed, which mainly focus on air interface, were classiifed and introduced in this paper. It is believed that air interface will still be the major part of 5G key techniques in the future.

  18. Studying Problem Solving through Group Discussion in Chat Rooms

    Directory of Open Access Journals (Sweden)

    Inna Kozlova

    2015-11-01

    Full Text Available In the present article we use a chat conversations’ corpus to study the process of resolving language problems. Our corpus includes chat conversations which took place between LSP students engaged in correcting errors in their peers’ summaries. The participants worked in groups and used the Windows Messenger program for communication within the group. Their task also included making use of electronic dictionaries and other reference materials. The conversations’ corpus obtained as a result of this exercise was analyzed holistically for possible indicators of each particular stage of the problem solving process. Later these indicators were validated throughout the entire corpus. Each problem solving process was thus represented as a chain of indicators and acceptability was determined for each error correction. The resulting problem solving chains were used to prove our hypotheses concerning internal and external support in text reproduction.

  19. 刍议小组合作对科学课堂教学的提升作用及实施要点%Discussion on the Role of Group Cooperation in Improv-ing Science Classroom Teaching and the Key Points for Its Implementation

    Institute of Scientific and Technical Information of China (English)

    张惠宁

    2015-01-01

    Group cooperation plays a role in promoting the con-sciousness of competition, collective awareness and innovation a-bility. The implementation of group cooperation teaching model in science classroom should pay attention to the labor distribution of group members, so as to comprehensively cultivate students' habit of scientific exploration and improve the teaching quality based on the stimulation mechanism. This paper analyzes the properties of science classroom and the promoting role of group cooperation for classroom teaching, and explores the key points for its implementation, hoping to provide a reference for the classroom teaching reform of middle school science.%小组合作对科学课堂教学有着竞争意识、集体意识、创新能力等诸多提升作用,科学课堂中小组合作教学模式的实施要注重小组成员的分工,全面培养学生科学探究习惯,配合激励机制提升教学质量。本文分析了科学课堂的性质及小组合作对课堂的提升作用,并就实施要点进行了探讨,希望能为中学科学课堂教学改革提供参考。

  20. The Effect of Instructional Methods (Lecture-Discussion versus Group Discussion) and Teaching Talent on Teacher Trainees Student Learning Outcomes

    Science.gov (United States)

    Mutrofin; Degeng, Nyoman Sudana; Ardhana, Wayan; Setyosari, Punaji

    2017-01-01

    The aim of this study is to examine difference in the effect of instructional methods (lecture-discussion versus group discussion) and teaching talent on teacher trainees student learning outcomes. It was conducted by a quasi-experimental design using the factorialized (2 x 2) version of the nonequivalent control group design. The subjects were…

  1. Patients' views on improving sickle cell disease management in primary care: focus group discussion.

    Science.gov (United States)

    Aljuburi, Ghida; Phekoo, Karen J; Okoye, Nv Ogo; Anie, Kofie; Green, Stuart A; Nkohkwo, Asaah; Ojeer, Patrick; Ndive, Comfort; Banarsee, Ricky; Oni, Lola; Majeed, Azeem

    2012-12-01

    To assess sickle cell disease (SCD) patient and carer perspectives on the primary care services related to SCD that they receive from their general practitioner (GP). A focus group discussion was used to elicit the views of patients about the quality of care they receive from their primary health-care providers and what they thought was the role of primary care in SCD management. The focus group discussion was video recorded. The recording was then examined by the project team and recurring themes were identified. A comparison was made with notes made by two scribes also present at the discussion. Sickle Cell Society in Brent, UK. Ten participants with SCD or caring for someone with SCD from Northwest London, UK. Patients' perceptions about the primary care services they received, and a list of key themes and suggestions. Patients and carers often bypassed GPs for acute problems but felt that GPs had an important role to play around repeat prescriptions and general health care. These service users believed SCD is often ignored and deemed unimportant by GPs. Participants wanted the health service to support primary health-care providers to improve their knowledge and understanding of SCD. Key themes and suggestions from this focus group have been used to help develop an educational intervention for general practice services that will be used to improve SCD management in primary care.

  2. Understanding the concept of the key worker: do focus groups help?

    Science.gov (United States)

    Hull, Ken; Turton, Pat

    2014-08-12

    The concept of the 'key-worker role' within paediatric haematology and oncology services is recognised in the UK through inclusion in published policies and guidance. Such guidance originates from both statutory and voluntary sector organisations. Within the policy direction itself, references are made to both 'designated' and 'non-designated' key workers, and there remains ongoing confusion within the professional field about the exact nature of the process of 'key-working' and how this should operate. This confusion therefore also exists for parents, carers and service users. The project described here aimed to examine the concept of the key-worker role through consultation with users as part of local service development. Focus group discussion was identified as the methodology of choice. Careful planning and delivery ensured that meaningful data emerged. Active participation by those attending the focus group discussion was observed. The focus group was in two sessions, both of which were digitally recorded and transcribed, with contemporaneous notes taken. These were subjected to thematic analysis and clear themes emerged regarding the importance of terminology, communication, skill mix and the use of technology. This local project achieved greater clarity about how to develop the key-worker role to best meet the needs of users through highlighting the need to include both the key-worker role, and the process of key-working. It is concluded that the use of focus groups is both a valid and valuable mechanism of consultation, as user consultation regarding service design and evaluation of care delivered is high on the wider agenda of the NHS.

  3. Discussion on Key Points of Wind Load of Jack-up Unit

    Institute of Scientific and Technical Information of China (English)

    林一; 胡安康; 熊飞; 蒋玮

    2014-01-01

    The anti-overturning ability and structure safety of jack-up unit in in-place condition are often affected by environment loads, especially wind load. According to the MODU rule, the projected area method is used for calculating the wind load. However, the calculated results are conservative and not good for structure optimization design. In this paper, a 400 ft jack-up is studied as an example. Based on the wind tunnel test and numerical simulation method, some key points of wind load calculation, such as shielding effect, lift effect and shape coefficient of component, are discussed. The study shows that the points mentioned above, which are ignored in the MODU rule calculation, result in the conservative result.

  4. Exercise as Medicine: Key Concepts in Discussing Physical Activity with Patients who have Type 2 Diabetes.

    Science.gov (United States)

    Armstrong, Marni J; Sigal, Ronald J

    2015-12-01

    People with type 2 diabetes stand to benefit substantially from being physically active. Practice guidelines consistently recommend that people with diabetes obtain at least 150 minutes of moderate to vigorous aerobic exercise per week. Although the message of 150 minutes per week is important, there are several other key messages regarding physical activity that may not be communicated as often or as clearly. This article gives an overview of the importance of resistance training, the dose-response relationship between physical activity and health outcomes, and the emerging evidence concerning the role of sedentary behavior in people with type 2 diabetes. This article provides valuable content for healthcare providers that will help to inform their discussions about physical activity with patients who have type 2 diabetes.

  5. Effects of Tagcloud-Anchored Group Discussions on Pre-Service Teachers' Collaborative Knowledge Construction

    Science.gov (United States)

    Lin, Shu-Yuan; Xie, Ying

    2017-01-01

    Group discussions are critical for students constructing new understanding and knowledge in both classroom and distance education. Tagclouds can provide an intuitive overview about the group's collective knowledge and could potentially be used as an anchor for group discussions. The effect of using tagclouds as anchors for group discussions was…

  6. Precautionary allergen labelling: perspectives from key stakeholder groups

    DEFF Research Database (Denmark)

    DunnGalvin, A.; Chan, C. -H.; Crevel, R.

    2015-01-01

    Precautionary allergen labelling (PAL) was introduced by the food industry to help manage and communicate the possibility of reaction from the unintended presence of allergens in foods. However, in its current form, PAL is counterproductive for consumers with food allergies. This review aims...... to summarize the perspectives of all the key stakeholders (including clinicians, patients, food industry and regulators), with the aim of defining common health protection and risk minimization goals. The lack of agreed reference doses has resulted in inconsistent application of PAL by the food industry...... and in levels of contamination that prompt withdrawal action by enforcement officers. So there is a poor relationship between the presence or absence of PAL and actual reaction risk. This has led to a loss of trust in PAL, reducing the ability of consumers with food allergies to make informed choices...

  7. Precautionary allergen labelling: perspectives from key stakeholder groups.

    Science.gov (United States)

    DunnGalvin, A; Chan, C-H; Crevel, R; Grimshaw, K; Poms, R; Schnadt, S; Taylor, S L; Turner, P; Allen, K J; Austin, M; Baka, A; Baumert, J L; Baumgartner, S; Beyer, K; Bucchini, L; Fernández-Rivas, M; Grinter, K; Houben, G F; Hourihane, J; Kenna, F; Kruizinga, A G; Lack, G; Madsen, C B; Clare Mills, E N; Papadopoulos, N G; Alldrick, A; Regent, L; Sherlock, R; Wal, J-M; Roberts, G

    2015-09-01

    Precautionary allergen labelling (PAL) was introduced by the food industry to help manage and communicate the possibility of reaction from the unintended presence of allergens in foods. However, in its current form, PAL is counterproductive for consumers with food allergies. This review aims to summarize the perspectives of all the key stakeholders (including clinicians, patients, food industry and regulators), with the aim of defining common health protection and risk minimization goals. The lack of agreed reference doses has resulted in inconsistent application of PAL by the food industry and in levels of contamination that prompt withdrawal action by enforcement officers. So there is a poor relationship between the presence or absence of PAL and actual reaction risk. This has led to a loss of trust in PAL, reducing the ability of consumers with food allergies to make informed choices. The result has been reduced avoidance, reduced quality of life and increased risk-taking by consumers who often ignore PAL. All contributing stakeholders agree that PAL must reflect actual risk. PAL should be transparent and consistent with rules underpinning decision-making process being communicated clearly to all stakeholders. The use of PAL should indicate the possible, unintended presence of an allergen in a consumed portion of a food product at or above any proposed action level. This will require combined work by all stakeholders to ensure everyone understands the approach and its limitations. Consumers with food allergy then need to be educated to undertake individualized risk assessments in relation to any PAL present.

  8. Group Discussions and Test-Enhanced Learning: Individual Learning Outcomes and Personality Characteristics

    Science.gov (United States)

    Stenlund, Tova; Jönsson, Fredrik U.; Jonsson, Bert

    2017-01-01

    This paper focuses on the factors that are likely to play a role in individual learning outcomes from group discussions, and it includes a comparison featuring test-enhanced learning. A between-groups design (N = 98) was used to examine the learning effects of feedback if provided to discussion groups, and to examine whether group discussions…

  9. Group Discussions and Test-Enhanced Learning: Individual Learning Outcomes and Personality Characteristics

    Science.gov (United States)

    Stenlund, Tova; Jönsson, Fredrik U.; Jonsson, Bert

    2017-01-01

    This paper focuses on the factors that are likely to play a role in individual learning outcomes from group discussions, and it includes a comparison featuring test-enhanced learning. A between-groups design (N = 98) was used to examine the learning effects of feedback if provided to discussion groups, and to examine whether group discussions…

  10. discussions

    Directory of Open Access Journals (Sweden)

    Alex S. Poznyak

    2002-01-01

    Full Text Available This paper develops a version of Robust Stochastic Maximum Principle (RSMP applied to the Minimax Mayer Problem formulated for stochastic differential equations with the control-dependent diffusion term. The parametric families of first and second order adjoint stochastic processes are introduced to construct the corresponding Hamiltonian formalism. The Hamiltonian function used for the construction of the robust optimal control is shown to be equal to the Lebesque integral over a parametric set of the standard stochastic Hamiltonians corresponding to a fixed value of the uncertain parameter. The paper deals with a cost function given at finite horizon and containing the mathematical expectation of a terminal term. A terminal condition, covered by a vector function, is also considered. The optimal control strategies, adapted for available information, for the wide class of uncertain systems given by an stochastic differential equation with unknown parameters from a given compact set, are constructed. This problem belongs to the class of minimax stochastic optimization problems. The proof is based on the recent results obtained for Minimax Mayer Problem with a finite uncertainty set [14,43-45] as well as on the variation results of [53] derived for Stochastic Maximum Principle for nonlinear stochastic systems under complete information. The corresponding discussion of the obtain results concludes this study.

  11. Choosing none of the above: Persistence of negativity after group discussion and group decision refusal

    NARCIS (Netherlands)

    Nijstad, B.A.

    2008-01-01

    Within psychology and other disciplines, group decision making is a much-studied topic. However, the conditions in which groups do not decide but rather refuse to choose among available options have not been studied systematically. This research begins to fill this void, studying the effects of the

  12. Choosing none of the above : Persistence of negativity after group discussion and group decision refusal

    NARCIS (Netherlands)

    Nijstad, Bernard A.

    2008-01-01

    Within psychology and other disciplines, group decision making is a much-studied topic. However, the conditions in which groups do not decide but rather refuse to choose among available options have not been studied systematically. This research begins to fill this void, studying the effects of the

  13. Group discussions and test-enhanced learning: individual learning outcomes and personality characteristics

    OpenAIRE

    Stenlund, Tova; Jönsson, Fredrik; Jonsson, Bert

    2016-01-01

    ABSTRACT This paper focuses on the factors that are likely to play a role in individual learning outcomes from group discussions, and it includes a comparison featuring test-enhanced learning. A between-groups design (N?=?98) was used to examine the learning effects of feedback if provided to discussion groups, and to examine whether group discussions benefit learning when compared to test-enhanced learning over time. The results showed that feedback does not seem to have any effect if provid...

  14. Human dimensions in bedside teaching: focus group discussions of teachers and learners.

    Science.gov (United States)

    Ramani, Subha; Orlander, Jay D

    2013-01-01

    Clinical teaching has moved from the bedside to conference rooms; many reasons are described for this shift. Yet, essential clinical skills, professionalism, and humanistic patient interactions are best taught at the bedside. Clinical teaching has moved from the bedside to conference rooms; many reasons are described for this decline. This study explored perceptions of teachers and learners on the value of bedside teaching and the humanistic dimensions of bedside interactions that make it imperative to shift clinical teaching back to the bedside. Focus group methodology was used to explore teacher and learner opinions. Four teacher groups consisted of (a) Chief Residents, (b) Residency Program Directors, (c) skilled bedside teachers, and (d) a convenience group of other Department of Medicine faculty at Boston University School of Medicine. Six learner groups consisted 2 each of 3rd-year students, PGY1 medicine residents, and PGY2 medicine residents. Each discussion lasted 60 to 90 minutes. Sessions were audiotaped, transcribed, and analyzed using qualitative methods. Teachers and learners shared several opinions on bedside teaching, particularly around humanistic aspects of bedside interactions. The key themes that emerged included (a) patient involvement in discussions, (b) teachers as role models of humanism, (c) preserving learner autonomy, (d) direct observation and feedback of learners at the bedside, (e) interactions with challenging patients, and (e) admitting limitations. Within these themes, participants noted some behaviors best avoided at the bedside. Teachers and learners regard the bedside as a valuable venue in which to learn core values of medicine. They proposed many strategies to preserve these humanistic values and improve bedside teaching. These strategies are essential for true patient-centered care.

  15. The influence of group discussion on performance judgments: rating accuracy, contrast effects, and halo.

    Science.gov (United States)

    Palmer, Jerry K; Loveland, James M

    2008-03-01

    The authors investigated the effect of group discussion, such as may occur formally in panel interview scenarios, assessment centers, or 360-degree feedback situations, on judgments of performance. Research on group polarization suggests that the effect of group discussion combined with raters' preexisting impressions of ratees or interviewees should result in an extremitization of impressions. Thus, the authors hypothesized that group discussion would (a) make ratings less accurate, (b) polarize impressions that were already good or poor as reflected by greater contrast effects, and (c) increase positive halo. Results indicated that group discussion resulted in less accurate ratings and greater contrast effects. Additional analyses suggested that group discussion increased positive halo. The authors discuss implications for research on group or panel judgments.

  16. A New Scalable and Reliable Cost Effective Key Agreement Protocol for Secure Group Communication

    Directory of Open Access Journals (Sweden)

    S. J. Begum

    2011-01-01

    Full Text Available Problem statement: In a heterogeneous environment, for a secure multicast communication, the group members have to share a secret key which is used to encrypt/decrypt the secret messages among the members. The Secure Group Communication of large scale multicast group in a dynamic environment is more complex than securing one-to-one communication due to the inherent scalability issue of group key management. Since the group members are dynamic in nature such as joining or leaving the group, the key updating is performed among the valid members without interrupting the multicast session so that non group members can’t have access to the future renewed keys. Approach: The main aim is to develop a scheme which can reduce the cost of computational overhead, number of messages needed during the time of key refreshing and the number of keys stored in servers and members. The cost of establishing the key and renewal is proportionate to the size of the group and subsequently fetches a bottleneck performance in achieving scalability. By using a Cluster Based Hierarchical Key Distribution Protocol, the load of key management can be shared among dummy nodes of a cluster without revealing the group messages to them. Results: Especially, the existing model incurs a very less computational and communication overhead during renewal of keys. The proposed scheme yields better scalability because of the fact that the Key computational cost, the keys stored in key server and numbers of rekey-messages needed are very less. Conclusion: Our proposed protocol is based on Elliptic curve cryptography algorithm to form secure group key, even with smaller key size, it is capable of providing more security. This protocol can be used both in wired or wireless environments.

  17. Connecting the Dots: A Discussion on Key Concepts in Contemporary Entrepreneurship Education

    Science.gov (United States)

    Hägg, Gustav; Kurczewska, Agnieszka

    2016-01-01

    Purpose: The purpose of this paper is to justify, elaborate and elucidate the concepts of action, experience and reflection, and how they are intertwined when discussing contemporary entrepreneurship education. These concepts have been given a meaning in entrepreneurship education, but have not been discussed in-depth, and by that have been…

  18. Connecting the Dots: A Discussion on Key Concepts in Contemporary Entrepreneurship Education

    Science.gov (United States)

    Hägg, Gustav; Kurczewska, Agnieszka

    2016-01-01

    Purpose: The purpose of this paper is to justify, elaborate and elucidate the concepts of action, experience and reflection, and how they are intertwined when discussing contemporary entrepreneurship education. These concepts have been given a meaning in entrepreneurship education, but have not been discussed in-depth, and by that have been…

  19. The Effects of Group Members' Personalities on a Test Taker's L2 Group Oral Discussion Test Scores

    Science.gov (United States)

    Ockey, Gary J.

    2009-01-01

    The second language group oral is a test of second language speaking proficiency, in which a group of three or more English language learners discuss an assigned topic without interaction with interlocutors. Concerns expressed about the extent to which test takers' personal characteristics affect the scores of others in the group have limited its…

  20. Challenges in the doctor-patient relationship: 12 tips for more effective peer group discussion.

    Science.gov (United States)

    Wilson, Hamish

    2015-09-01

    In New Zealand, almost all general practitioners are members of peer groups, which provide opportunities for both clinical discussion and collegial support. This article proposes that peer groups can also be a useful medium for exploring specific challenges within the doctor-patient relationship. However, the peer group culture needs to be receptive to this particular goal. Structured discussion can help peer group members explore interpersonal issues more thoroughly.

  1. Beliefs and habits: staff experiences with key word signing in special schools and group residential homes.

    Science.gov (United States)

    Rombouts, Ellen; Maes, Bea; Zink, Inge

    2017-06-01

    Even though use of aided augmentative and alternative communication (AAC) by staff has been extensively researched, few studies relate to unaided AAC strategies such as key word signing (KWS). We explored the KWS views of two groups: direct support staff in group residential homes and teachers from special education secondary schools. We examined transcripts from individual semi-structured interviews with five direct support staff and five teachers using thematic analysis. Participants discussed consistency of KWS use and reasons for implementing KWS. Compared to direct support staff, teachers described more use of KWS throughout the day with more individuals with intellectual disability. Teachers discussed use of KWS to facilitate students' present and future interactions, while direct support staff primarily discussed immediate effects. Participants experienced KWS implementation as a learning process and aimed to turn the use of manual signs into a routine habit. This required considerable self-monitoring, and the effort that this continuous self-feedback required, combined with environmental factors, could hinder KWS implementation. These preliminary findings suggest that preservice KWS training and on-site KWS assistance may need to be enhanced.

  2. Climate Change and Its Causes, A Discussion About Some Key Issues

    CERN Document Server

    Scafetta, Nicola

    2010-01-01

    This article discusses the limits of the Anthropogenic Global Warming Theory advocated by the Intergovernmental Panel on Climate Change. A phenomenological theory of climate change based on the physical properties of the data themselves is proposed. At least 60% of the warming of the Earth observed since 1970 appears to be induced by natural cycles which are present in the solar system. A climatic stabilization or cooling until 2030-2040 is forecast by the phenomenological model.

  3. The Effect of Small Group Discussion on Cutoff Scores during Standard Setting

    Science.gov (United States)

    Deunk, Marjolein I.; van Kuijk, Mechteld F.; Bosker, Roel J.

    2014-01-01

    Standard setting methods, like the Bookmark procedure, are used to assist education experts in formulating performance standards. Small group discussion is meant to help these experts in setting more reliable and valid cutoff scores. This study is an analysis of 15 small group discussions during two standards setting trajectories and their effect…

  4. Relevant Prior Knowledge Moderates the Effect of Elaboration during Small Group Discussion on Academic Achievement

    Science.gov (United States)

    Van Blankenstein, Floris M.; Dolmans, Diana H. J. M.; Van der Vleuten, Cees P. M.; Schmidt, Henk G.

    2013-01-01

    This study set out to test whether relevant prior knowledge would moderate a positive effect on academic achievement of elaboration during small-group discussion. In a 2 × 2 experimental design, 66 undergraduate students observed a video showing a small-group problem-based discussion about thunder and lightning. In the video, a teacher asked…

  5. Promoting Thinking, Problem-Solving and Reasoning during Small Group Discussions

    Science.gov (United States)

    Gillies, Robyn M.

    2011-01-01

    The study reports on the types of questioning strategies teachers use to promote thinking, problem-solving and reasoning during small group discussions. The study also reports on the types of discourses students use to problem-solve and reason during their small group discussions. An audiotape of one class lesson from the three teachers included…

  6. Relevant prior knowledge moderates the effect of elaboration during small group discussion on academic achievement

    NARCIS (Netherlands)

    F.M. van Blankenstein (Floris); D.H.J.M. Dolmans (Diana); C.P.M. van der Vleuten (Cees); H.G. Schmidt (Henk)

    2013-01-01

    textabstractThis study set out to test whether relevant prior knowledge would moderate a positive effect on academic achievement of elaboration during small-group discussion. In a 2 × 2 experimental design, 66 undergraduate students observed a video showing a small-group problem-based discussion

  7. Qualitative Research and Consumer Policy: Focus Group Discussions as a Form of Consumer Participation

    Science.gov (United States)

    Heiskanen, Eva; Jarvela, Katja; Pulliainen, Annukka; Saastamoinen, Mika; Timonen, Paivi

    2008-01-01

    This paper describes our ongoing attempts to involve consumers in innovation and technology policy by means of a national Consumer Panel, using focus group discussions as the primary method of consumer participation. We evaluate our experiences of the usefulness of focus group discussions in this context by considering two examples of studies…

  8. A Brief Discussion on the Key Factors of Developing and Implementing College Student's ICC

    Institute of Scientific and Technical Information of China (English)

    YANG Xi; WANG Yan-ru

    2015-01-01

    Language and culture are interrelated with each other, to learn a foreign language is not only about learning language it⁃self, but achieving a mutual understanding and appreciating of other cultures. The need for the people of intercultural communica⁃tive competence (ICC) in various work fields is consistently increasing. The development and implementation of intercultural com⁃municative competence has become the major goal of college English teaching. This paper mainly discusses the main factors in de⁃veloping and implementing ICC to find out their possible benefits and constrains in order to give some suggestions for the further development of Chinese college English teachers.

  9. Group discussions and test-enhanced learning: individual learning outcomes and personality characteristics.

    Science.gov (United States)

    Stenlund, Tova; Jönsson, Fredrik U; Jonsson, Bert

    2017-02-07

    This paper focuses on the factors that are likely to play a role in individual learning outcomes from group discussions, and it includes a comparison featuring test-enhanced learning. A between-groups design (N = 98) was used to examine the learning effects of feedback if provided to discussion groups, and to examine whether group discussions benefit learning when compared to test-enhanced learning over time. The results showed that feedback does not seem to have any effect if provided to a discussion group, and that test-enhanced learning leads to better learning than the discussion groups, independent of retention interval. Moreover, we examined whether memory and learning might be influenced by the participants' need for cognition (NFC). The results showed that those scoring high on NFC remembered more than those who scored low. To conclude, testing trumps discussion groups from a learning perspective, and the discussion groups were also the least beneficial learning context for those scoring low on NFC.

  10. A Tentative Study of Agreement among University Freshmen in Oral English Group Discussions

    Institute of Scientific and Technical Information of China (English)

    杨非

    2008-01-01

    The aim of this research was to find out how university freshmen came to an agreement in oral English. There were twenty groups in two classes of freshmen who took part in this activity and got involved in the classroom discussions and after-class communications. The classes were divided into groups of six members. The results of the research showed that while the freshmen got involved in the group discussions, they used social communicative skills to reach a final agreement.

  11. A Tentative Study of Agreement among University Freshmen in Oral English Group Discussions

    Institute of Scientific and Technical Information of China (English)

    杨非

    2008-01-01

    The aim of this research was to find out how university freshmen came to an agreement in oral English. There weretwenty groups in two classes of freshmen who took part in this activity and got involved in the classroom discussions and after-classcommunications. The classes were divided into groups of six members. The results of the research showed that while the freshmen gotinvolved in the group discussions, they used social communicative skills to reach a final agreement.

  12. EPA's Reanalysis of Key Issues Related to Dioxin Toxicity and Response to NAS Comments (Volume 1) (Interagency Science Discussion Draft)

    Science.gov (United States)

    EPA is releasing the draft report, EPA's Reanalysis of Key Issues Related to Dioxin Toxicity and Response to NAS Comments (Volume 1), that was distributed to Federal agencies and White House Offices for comment during the Science Discussion step of the EPA's Reanalysis of Key Issues Related to Dioxin Toxicity and Response to NAS Comments (Volume 1) (Interagency Science Discussion Draft)

    Science.gov (United States)

    EPA is releasing the draft report, EPA's Reanalysis of Key Issues Related to Dioxin Toxicity and Response to NAS Comments (Volume 1), that was distributed to Federal agencies and White House Offices for comment during the Science Discussion step of the Patient advisory groups in practice improvement: sample case presentation with a discussion of best practices.

    Science.gov (United States)

    Angstman, Kurt B; Bender, Robert O; Bruce, Steven M

    2009-01-01

    Using patient advisory groups can affect practice changes and create a patient-centric focus for a primary care practice. A successful patient advisory group has been developed for our primary care clinics. Utilizing this group, we have implemented practice improvement changes that have had a significant impact in patient care. This will be demonstrated in a case presentation involving the implementation of depression care managers at our practice sites. We will review key "best practices," as defined by the group, regarding size, composition, and meeting frequency that can be used for the development of a clinical patient advisory group.

  13. An Identity-Based Group Key Agreement Proto col for Low-Power Mobile Devices

    Institute of Scientific and Technical Information of China (English)

    TENG Jikai; WU Chuankun

    2016-01-01

    In wireless mobile networks, group mem-bers join and leave the group frequently, a dynamic group key agreement protocol is required to provide a group of users with a shared secret key to achieve cryptographic goal. Most of previous group key agreement protocols for wireless mobile networks are static and employ traditional PKI. This paper presents an ID-based dynamic authen-ticated group key agreement protocol for wireless mobile networks. In Setup and Join algorithms, the protocol re-quires two rounds and each low-power node transmits con-stant size of messages. Furthermore, in Leave algorithm, only one round is required and none of low-power nodes is required to transmit any message, which improves the effi-ciency of the entire protocol. The protocol’s AKE-security with forward secrecy is proved under Decisional bilinear in-verse Diffie-Hellman (DBIDH) assumption. It is addition-ally proved to be contributory.

  14. A Framework for Group Key Management Protocol Assessment Independent of View Synchrony

    Directory of Open Access Journals (Sweden)

    David Manz

    2010-01-01

    Full Text Available Problem statement: As group key management extended into the area of large dynamic networks, complex issues emerged involving the many operations that run over several network topologies. The issues that occurred due to multiple topologies were also compounded by differing views of the network, taken at different time slices or positions within the network. This was especially complex when figuring in mobile, ad-hoc networks. View synchrony is the current operational technique, or assumption, applied to group key exchange protocols. However, before this analysis view synchrony was just that, an assumption and the literature for group key exchange lacked an inquiry into what could happen when view synchrony was removed. Current group key management protocols rely on view synchrony and yet all protocols vary in requisite operational descriptions and performance measures. In this study, a framework for group key management protocol operations and performance measures was defined and examined how that framework could be used to compare and contrast existing protocols with and, more importantly, without view synchrony. Approach: Current literature lacked categories by which to quantify the performance metric of the protocols. This study first defined the dynamic key operations that all protocols share. By these definitions, group key management protocols were directly compared. Once definitions existed, this study assembled a list of costs that every protocol requires to establish and share keys across the dynamic group. These results provided an understanding of view synchrony's role and whether or not it should be solely relied on in these current protocols. Results: The prior conclusion that view synchrony was an integral part of all group key management protocols was shattered, when seen through the lens of communication costs and assumptions in wireless ad-hoc networks. View synchrony, as an assumed part of all group key management was

  15. Cutting the Cord: Student-Led Discussion Groups in Higher Education.

    Science.gov (United States)

    Kremer, John; McGuinness, Carol

    1998-01-01

    Describes the use of leaderless group discussions and peer assessment in undergraduate classes to develop teamwork skills and the capacity for independent thought and action students will need on the job. (SK)

  16. Discussing group work in the EFL classroom from a Chinese cultural perspective

    Institute of Scientific and Technical Information of China (English)

    樊宇; 张冬瑜

    2007-01-01

    The purpose of this paper is to help the EFL teachers, particularly those western teachers, who are teaching in China, to obtain a better understanding of group work by exploring and discussing its use from a Chinese cultural perspective.

  17. Student satisfaction and self-assessment after small group discussion in a medical ethics education program.

    Science.gov (United States)

    Joh, Hee-Kyung; Shin, Jwa-Seop

    2009-09-01

    Small group discussions are useful tools in medical ethics education. We aimed to assess student satisfaction with specific components of a small group discussion and to evaluate student self-assessment of the objectives of education. A structured questionnaire was developed after a literature review and a focus group interview. Components of the small group discussion were categorized by discussion case (self, other), individual activities (self-study, making materials, presentation experience), and group activities (preclass/in-class/postclass/plenary discussion, instructor's comments). The items for student self-assessment were: "To specify ethical issue in actual practice", "To get new knowledge", "To consider doctor's entity", "Empathy to others", "To get multidimensional viewpoint", "Viewpoint change", "To deliver my thought clearly", and "Ability to confront the medical ethics dilemma in the future". After the survey, an in-depth interview was performed to determine the reason behind the students' answers. A total of 121 students responded, for whom overall satisfaction and self-assessment were high. Students reported greater satisfaction with self-case, presentation experience, in-class discussion, and instructor's comments but less satisfaction with self-study before class and postclass discussion. Student self-assessment was highest in the ability to specify an ethical issue and lowest for viewpoint change and self-confidence. After multivariate analysis, higher student self-assessment was associated with greater satisfaction with the small group discussion. To improve the quality of medical ethics education, close investigation and monitoring of each component of the small group discussion and student achievement are essential, as is continuous feedback.

  18. [The Mechanism of Free-Floating Discussion in a Psychiatric/Mental Health Nursing Supervisory Group].

    Science.gov (United States)

    Chiang, Hsien-Hsien

    2015-06-01

    Although the free-floating discussion format is widely used in group therapy, the application of this format in the context of supervisory groups has yet to be clarified. The purpose of this study was to explore the mechanisms involved in facilitating and learning the free-floating discussion format in a supervisory group. A phenomenological approach was used to investigate the group content and personal feedback of a psychiatric-nurse supervisory group. The group held on 12 sessions. Each session was conducted once weekly and lasting 150 minutes. The findings identified the functions of free-floating discussions in the context of supervisory groups as: embodied interaction and initiation by handling. Embodied interaction included: reflection on the experience of the other, sense of body, and present action. Initiation by handling included: facilitating the self-narrative, following the lead of the group, and reflecting in accordance with the group. The role of the facilitator is to parallel process rather than to lead in order to produce practical wisdom. Free-floating discussion and self-evidence from initiation by handling has the potential to promote spontaneity, creativity, and self-confidence in clinical practice and to promote deep learning.

  1. Social Skills and Leadership Abilities among Children in Small-Group Literature Discussions

    Science.gov (United States)

    Certo, Janine L.

    2011-01-01

    Many childhood educators are attempting to shift from the dominant "recitation" format of discussions found in today's classrooms. This study draws on reader response, and sociocognitive and sociocultural theories to investigate children's perceptions of social skills and leadership moves after participating in small-group discussions of…

  2. Advances and bottlenecks in modelling the greenhouse climate: summary of a group discussion

    NARCIS (Netherlands)

    Seginer, I.; Bakker, J.C.

    1998-01-01

    This report is a summary of a group discussion at the symposium 'Models in protected cultivation' held in Wageningen, August 1997. The discussion focused on the reasons for the relatively limited acceptance and application of greenhouse climate models, especially in commercial practice. The discussi

  3. Indian Youth Speak about Tobacco: Results of Focus Group Discussions with School Students

    Science.gov (United States)

    Mishra, Arima; Arora, Monika; Stigler, Melissa H.; Komro, Kelli A.; Lytle, Leslie A.; Reddy, K. Srinath; Perry, Cheryl L.

    2005-01-01

    This article discusses the findings of Focus Group Discussions (FGDs) that were conducted as a formative assessment for Project MYTRI (Mobilizing Youth for Tobacco Related Initiatives in India), a randomized, multicomponent, school-based trial to prevent and control tobacco use among youth in India. Forty-eight FGDs were conducted with students (N…

  4. Using the Self-Consciousness Scale to Predict Student Discussion Group Participation.

    Science.gov (United States)

    Aamodt, Michael G.; Keller, Robert J.

    1981-01-01

    This study used the Self-Consciousness Scale to test the hypothesis that socially anxious people could seek to avoid embarrassment and do poorly in small group discussions as a result. Those people high in private self-consciousness (lacking concern for social evaluation) would participate more in discussions. Findings supported the hypothesis.…

  5. Using Multimodal Presentation Software and Peer Group Discussion in Learning English as a Second Language

    Science.gov (United States)

    Wang, Mei-jung

    2011-01-01

    This paper reports an application of multimedia in a blended learning environment in which students engaged in multimodal presentations and peer group discussion. Students' presentation files were commented upon by their peers on the discussion board and scored by the researcher, based on questions developed by Levy and Kimber (2009) to apply…

  6. Attitudes and Language Use in Group Discussions on Socio-Scientific Issues

    Science.gov (United States)

    Lindahl, Mats Gunnar; Folkesson, Anne-Mari

    2016-01-01

    The school systems of many countries have been pervaded by student-centred pedagogy making students' small group discussion a common feature of the classroom practice.However, there is a lack of studies focussing different modes of discussion for the purpose of finding out whether some modes are more beneficial than others. Hence, the aim of this…

  7. Literacy and Technology: Integrating Technology with Small Group, Peer-Led Discussions of Literature

    Science.gov (United States)

    Coffey, Genya

    2012-01-01

    This review examines research of computer-mediated small group discussion of literature. The goal of this review is to explore several instructional formats for integrating print-based and new literacies skills. First, the theoretical foundations for the shift from teacher-led to student led discussion are outlined. Research exploring ways in…

  8. Learning through Discussions: Comparing the Benefits of Small-Group and Large-Class Settings

    Science.gov (United States)

    Pollock, Philip H.; Hamann, Kerstin; Wilson, Bruce M.

    2011-01-01

    The literature on teaching and learning heralds the benefits of discussion for student learner outcomes, especially its ability to improve students' critical thinking skills. Yet, few studies compare the effects of different types of face-to-face discussions on learners. Using student surveys, we analyze the benefits of small-group and large-class…

  9. Social Skills and Leadership Abilities among Children in Small-Group Literature Discussions

    Science.gov (United States)

    Certo, Janine L.

    2011-01-01

    Many childhood educators are attempting to shift from the dominant "recitation" format of discussions found in today's classrooms. This study draws on reader response, and sociocognitive and sociocultural theories to investigate children's perceptions of social skills and leadership moves after participating in small-group discussions of…

  10. Gender Issues on the Information Highway: An Analysis of Communication Styles in Electronic Discussion Groups.

    Science.gov (United States)

    Rossetti, Paolo

    A study investigated gender differences in language use in electronic mail discussion groups. A review of research on discourse analysis identifies areas in which gender differences are found in interpersonal interaction and language use in general, and how these reflect differences in socialization. Research on electronic discussion groups…

  11. A Glimpse of Interactional Strategies Used in Group Discussion in the EFL Context

    Institute of Scientific and Technical Information of China (English)

    林美笑

    2013-01-01

    On the basis of literature review, this paper discusses what interactional strategies are in group discussions conducted in the EFL classroom. Two frameworks for interactional strategies are investigated to explore the types of interactional strategies. This aims to shed light upon the analysis of interactional features in face-to-face communication.

  12. HUFFMAN-BASED GROUP KEY ESTABLISHMENT SCHEME WITH LOCATION-AWARE

    Institute of Scientific and Technical Information of China (English)

    Gu Xiaozhuo; Yang Jianzu; Lan Julong

    2009-01-01

    Time efficiency of key establishment and update is one of the major problems contributory key managements strive to address. To achieve better time efficiency in key establishment, we propose a Location-based Huffman (L-Huffman) scheme. First, users are separated into several small groups to minimize communication cost when they are distributed over large networks. Second, both user's computation difference and message transmission delay are taken into consideration when Huffman coding is employed to forming the optimal key tree. Third, the combined weights in Huffman tree are located in a higher place of the key tree to reduce the variance of the average key generation time and minimize the longest key generation time. Simulations demonstrate that L-Huffman has much better performance in wide area networks and is a little better in local area network than Huffman scheme.

  13. Group Project Work in Biotechnology and Its Impact on Key Skills.

    Science.gov (United States)

    Thomas, M.; Hughes, S. G.; Hart, P. M.; Schollar, J.; Keirle, K.; Griffith, G. W.

    2001-01-01

    Describes a group work approach to the teaching of ethical issues in biotechnology and evaluates its impact on the acquisition of the key skills of working together, communication, and problem solving. Uses the Key Skills Confidence Scale (KSCS) to evaluate post-16 students' self confidence. (Contains 30 references.) (Author/YDS)

  14. Theorising Dyslexic Student Discussion/Action Groups in UK Higher Education: Research in Practice

    Science.gov (United States)

    French, Jenny; Herrington, Margaret

    2008-01-01

    This "research in practice" analyses the experience of operating discussion/action groups with dyslexic students in higher education in three British universities which reflects a shift from the practice of developing "support groups" to a more developmental, proactive stance. It does so in the current UK legislative context…

  15. Designing a bone health and soy focus group discussion guide based on the health belief model

    Science.gov (United States)

    Focus groups were used to assess the knowledge and skills of women in order to support curricula development. The Health Belief Model was applied to the discussion guide to enhance focus group findings and applications. Constructs related to perceived susceptibility, severity, benefits, and barriers...

  16. The Effects of L1 and L2 Group Discussions on L2 Reading Comprehension

    Science.gov (United States)

    Turnbull, Blake; Evans, Moyra Sweetnam

    2017-01-01

    The aim of this study was to explore the effects of post-reading group discussions in both first (L1) and second (L2) languages on L2 reading comprehension. The participants were fifteen Japanese university students of intermediate-level English. Three cohorts read four English texts and produced individual written recalls. Group 1 (the control…

  17. Using a Facebook Group as a Forum to Distribute, Answer and Discuss Content: Influence on Achievement

    Science.gov (United States)

    O'Bannon, Blanche W.; Britt, Virginia G.; Beard, Jeffrey L.

    2013-01-01

    This study examined the effectiveness of using a Facebook group to increase preservice teachers' knowledge when one was used as a forum to share, answer, and discuss content-related questions in a technology course required for all students seeking teacher licensure. Further, it examined the students' prior use of Facebook groups, how the…

  18. Reducing Preschoolers' Disruptive Behavior in Public with a Brief Parent Discussion Group

    Science.gov (United States)

    Joachim, Sabine; Sanders, Matthew R.; Turner, Karen M. T.

    2010-01-01

    This study examined the efficacy of a brief 2-h discussion group for parents of preschool children that show disruptive behavior on shopping trips. Forty-six parents with children aged 2-6 years were randomly assigned to either the intervention condition or a waitlist control group. Significant intervention effects were found for measures of…

  19. A new Hierarchical Group Key Management based on Clustering Scheme for Mobile Ad Hoc Networks

    Directory of Open Access Journals (Sweden)

    Ayman EL-SAYED

    2014-05-01

    Full Text Available The migration from wired network to wireless network has been a global trend in the past few decades because they provide anytime-anywhere networking services. The wireless networks are rapidly deployed in the future, secure wireless environment will be mandatory. As well, The mobility and scalability brought by wireless network made it possible in many applications. Among all the contemporary wireless networks,Mobile Ad hoc Networks (MANET is one of the most important and unique applications. MANET is a collection of autonomous nodes or terminals which communicate with each other by forming a multihop radio network and maintaining connectivity in a decentralized manner. Due to the nature of unreliable wireless medium data transfer is a major problem in MANET and it lacks security and reliability of data. The most suitable solution to provide the expected level of security to these services is the provision of a key management protocol. A Key management is vital part of security. This issue is even bigger in wireless network compared to wired network. The distribution of keys in an authenticated manner is a difficult task in MANET. When a member leaves or joins the group, it needs to generate a new key to maintain forward and backward secrecy. In this paper, we propose a new group key management schemes namely a Hierarchical, Simple, Efficient and Scalable Group Key (HSESGK based on clustering management scheme for MANETs and different other schemes are classified. Group members deduce the group key in a distributed manner.

  20. A Loss-Tolerant Group Key Management Scheme with Revocation Capability for Wireless Sensor Network

    Institute of Scientific and Technical Information of China (English)

    LI Lin-chun; LI Jian-hua; YI Ping; PAN Jun

    2009-01-01

    A new group key management scheme against the unreliable wireless communication channel and unsafe environment was proposed for wireless sensor network (WSN). In the proposed scheme, broadcast polynomial, generated over finite field Fq based on the secret sharing, was employed to revoke compromised sensor nodes. In order to tolerate key-update message loss, group session keys were generated as one-way hash chain sequence and distributed in advance. The analysis showes that the scheme has better performance in terms of the computation and communication overhead.

  1. Policy based Decentralized Group key Security for Mobile Ad-hoc Networks

    Directory of Open Access Journals (Sweden)

    Sugandha Singh

    2010-05-01

    Full Text Available The unique characteristics and constraints of MANET have made the traditional approach to security inadequate. With this view in mind decentralized group key management is taken into consideration. A novel structure of the node is proposed and each entity holds a secret share SSi of each node in cluster is controlled by its cluster head, the policy enforcer decides for the working of intelligent agent, which is assigned to do the management, which allows two or more parties to derive shared key as a function of information associated with the protocol and so no party can predetermine the resulting value. Group membership certificate is used for group authentication and by the use threshold key scheme secret data is transferred. The SSi of each node is calculated by use of Polynomial interpolation and cluster head key by modular arithmetic, and information is carried by the policy based agents named intelligent agents.

  2. Talking Mats in a discussion group for people with Huntington's disease.

    Science.gov (United States)

    Hallberg, Lisa; Mellgren, Elin; Hartelius, Lena; Ferm, Ulrika

    2013-01-01

    To evaluate the function of Talking Mats (TM) in a discussion group for people with Huntington's disease (HD). Four persons with HD and their group leader participated. The group was videotaped during four discussions, two with and two without TM. A mixed method quantitative and qualitative study was implemented by evaluating the conversations using the protocol Effectiveness Framework of Functional Communication by analyzing the number of follow-up questions and by post discussion interviews. The results showed improved effectiveness of communication for all participants and an increased number of follow-up questions, both from the group leader and from some of the participants. All participants and the leader were positive regarding the use of TM but there were also drawbacks. TM could be useful in discussion groups for people with HD. An increased number of follow-up questions when TM is used may lead to a deeper understanding within the group. This study is the first of its kind and more research in the area is needed. [Box: see text].

  3. The description of the female of Platycheirus troll Mutin (Diptera, Syrphidae) with a preliminary key to the Northern Palaearctic females of the Platycheirus clypeatus group.

    Science.gov (United States)

    Haarto, Antti

    2015-08-17

    The female of Platycheirus troll Mutin is described. A preliminary key to the females of the Northern Palaearctic species of the Platycheirus clypeatus group is presented. The possibility to identify the undescribed female of Platycheirus magadanensis Mutin is discussed.

  4. On the Ergodic Secret-Key Agreement over Spatially Correlated Multiple-Antenna Channels with Public Discussion

    KAUST Repository

    Zorgui, Marwen

    2015-09-28

    We consider secret-key agreement with public discussion over multiple-input multiple-output (MIMO) Rayleigh fast-fading channels under correlated environment. We assume that transmit, legitimate receiver and eavesdropper antennas are correlated. The legitimate receiver and the eavesdropper are assumed to have perfect channel knowledge while the transmitter has only knowledge of the correlation matrices. First, we derive the expression of the secret-key capacity under the considered setup. We prove that the optimal transmit strategy achieving the secret-key capacity consists in transmitting independent Gaussian signals along the eingenvectors of the transmit correlation matrix. The powers allocated to each channel mode are determined as the solution to a numerical optimization problem. A necessary and sufficient condition for beamforming (i.e., transmitting along the strongest channel mode) to be capacity-achieving is derived. Moreover, we analyze the impact of correlation matrices on the system performance. Finally, we study the system’s performance in the two extreme power regimes. In the high-power regime, we provide closed-form expressions of the gain/loss due to correlation. In the low signal-to-noise ratio (SNR) regime, we investigate the energy efficiency of the system by determining the minimum energy required for sharing a secret-key bit and the wideband slope while highlighting the impact of correlation matrices.

  5. Gaussian elimination in split unitary groups with an application to public-key cryptography

    Directory of Open Access Journals (Sweden)

    Ayan Mahalanobis

    2017-07-01

    Full Text Available Gaussian elimination is used in special linear groups to solve the word problem. In this paper, we extend Gaussian elimination to split unitary groups. These algorithms have an application in building a public-key cryptosystem, we demonstrate that.

  6. Why political context is key in determining the parties interest groups choose to collaborate with

    NARCIS (Netherlands)

    Otjes, Simon; Rasmussen, Anne

    2015-01-01

    When interest groups choose to collaborate with political parties what determines the type of party they opt to work with? Anne Rasmussen and Simon Otjes write that the two key elements shaping this decision are typically the ideological similarities between the interest group and the party, togethe

  7. Health information, credibility, homophily, and influence via the Internet: Web sites versus discussion groups.

    Science.gov (United States)

    Wang, Zuoming; Walther, Joseph B; Pingree, Suzanne; Hawkins, Robert P

    2008-07-01

    Despite concerns about online health information and efforts to improve its credibility, how users evaluate and utilize such information presented in Web sites and online discussion groups may involve different evaluative mechanisms. This study examined credibility and homophily as two underlying mechanisms for social influence with regard to online health information. An original experiment detected that homophily grounded credibility perceptions and drove the persuasive process in both Web sites and online discussion groups. The more homophilous an online health information stimulus was perceived as being, the more likely people were to adopt the advice offered in that particular piece of information.

  8. The Hampstead Clinic at work. Discussions in the Diagnostic Profile Research Group.

    Science.gov (United States)

    Koch, Ehud

    2012-01-01

    Minutes of the Hampstead Clinic's Diagnostic Profile Research Group during a fifteen-month period (1964-1965) are reviewed and discussed. A wide range of topics were considered and discussed, with a special focus on the affective life, object relations, and ego function of atypical children in comparison to the early ego functions and differentiation of normal and neurotic children. These lively clinical and theoretical discussions and their implications for therapeutic work with a wide range of children, demonstrate the multifaceted leadership and contributions of Anna Freud as teacher, clinician, and thinker, and of the Hampstead Clinic as a major center for psychoanalytic studies.

  9. Effects of communication strategy training on EFL students’ performance in small-group discussions

    Directory of Open Access Journals (Sweden)

    Stuart Benson

    2013-10-01

    Full Text Available In recent years, a number of studies have been conducted with regard to communication strategy training and performance on communicative tasks (Lam, 2009; Nakatani, 2010; Naughton, 2006. This study aims to add to the literature by examining how two strategies, clarifying/confirming and extending a conversation, and two methods of teaching the strategies, affected the interactional sequences and overall group discussion performance of EFL students at a university in Japan. Pre and posttreatment small-group discussions were recorded for assessment, and a stimulated recall interview was administered to determine the participants’ perceptions of their learning and language use. Posttest results reveal that the experimental groups that were taught predetermined phrases aimed at clarifying/confirming and extending a conversation employed such phrases more frequently than the control group. However, this employment of phrases did not lead to higher gains in group discussion skills as the control group enjoyed the largest gains from pre to posttest. The researchers consider the findings in light of previous research, and conclude with recommendations for future research on the topic with special regard to research design.

  10. Tagging Thinking Types in Asynchronous Discussion Groups: Effects on Critical Thinking

    Science.gov (United States)

    Schellens, T.; Van Keer, H.; De Wever, B.; Valcke, M.

    2009-01-01

    The present study focuses on the use of thinking types as a possible way to structure university students' discourse in asynchronous discussion groups and consequently promote their learning. More specifically, the aim of the study is to determine how requiring students to label their contributions by means of De Bono's (1991) thinking hats…

  11. Upper Secondary Students in Group Discussions about Physics and Our Presuppositions of the World

    Science.gov (United States)

    Hansson, Lena; Redfors, Andreas

    2007-01-01

    In this article we report on a group activity, based on previous work [Hansson & Redfors: 2006b, "Science & Education" (accepted)], in an upper secondary physics class in Sweden. The aim was to engage students in a discussion about which presuppositions that are really necessary for physics. During the activity the students were to decide about…

  12. Examination of Students' Small Groups Discussion in Argumentation Process: Scientific and Socio-Scientific Issues

    Science.gov (United States)

    Memis, Esra Kabatas; Cevik, Ebru Ezberci

    2017-01-01

    The purpose of this study was to examine processes experienced by students of different achievement levels in small group discussions in argumentation applications conducted in scientific and socio-scientific issues. Case study which is a qualitative research design was used for the study. In this line, a success test including mechanical subjects…

  13. Quantifying the Effect of Discussion Group Membership on Technology Adoption and Farm Profit on Dairy Farms

    Science.gov (United States)

    Hennessy, Thia; Heanue, Kevin

    2012-01-01

    Purpose: Participatory extension, specifically farm discussion groups, has become a very popular form of agricultural extension in Ireland. The purpose of this article is to assess its effectiveness in promoting the adoption of new technologies and improving farm profit. Design/Methodology/Approach: Following a review of the background and theory…

  14. A Framework for Conducting Critical Dialectical Pluralist Focus Group Discussions Using Mixed Research Techniques

    Science.gov (United States)

    Onwuegbuzie, Anthony J.; Frels, Rebecca K.

    2015-01-01

    Although focus group discussions (FGDs) represent a popular data collection tool for researchers, they contain an extremely serious flaw: FGD researchers have ultimate power over all decisions made at every stage of the research process--from the conceptualization of the research, to the planning of the research study, to the implementation of the…

  15. A High-Leverage Language Teaching Practice: Leading an Open-Ended Group Discussion

    Science.gov (United States)

    Kearney, Erin

    2015-01-01

    In response to calls for more practice-based teacher education, this study investigated the way in which two high-performing novice world language teachers, one in Spanish and one in Latin, implemented a high-leverage teaching practice, leading an open-ended group discussion. Observational data revealed a number of constituent micro-practices. The…

  16. Creating Spaces for Critical Transformative Dialogues: Legitimising Discussion Groups as Professional Practice

    Science.gov (United States)

    Edwards-Groves, Christine J.

    2013-01-01

    Focussed dialogue (as lived and living practices) can have a powerful role in renewing professional practice, advancing its sustainability and development as administrative and political systems colonise the practices of teachers and teacher educators. However, participating in discussion groups for many teachers, including those in academia, is…

  17. Communicating for Diversity: Using Teacher Discussion Groups to Transform Multicultural Education

    Science.gov (United States)

    De La Mare, Danielle M.

    2014-01-01

    The author argues that in order to create space for authentic multicultural engagement in the face of Eurocentric norms, teachers should form discussion groups that follow five basic guidelines: engage, don't enrage; be comfortable with negative emotion; watch for and change unproductive language; talk about everything; and engage in classroom…

  18. Evaluating Impact of Small-Group Discussion on Learning Utilizing a Classroom Response System

    Science.gov (United States)

    Flosason, Thorhallur O.; McGee, Heather M.; Diener-Ludwig, Lori

    2015-01-01

    Classroom response systems (also referred to as clickers) can enhance learning outcomes and are generally viewed favorably by students and instructors alike. The current study used an alternating treatments design to examine whether discussing questions in small groups before responding to clicker questions during lecture improved accurate…

  19. Talk in the Science Classroom: Using Verbal Behaviour Analysis as a Tool for Group Discussion

    Science.gov (United States)

    Bianchi, Lynne; Booth, Josephine

    2014-01-01

    This article describes a pilot study following on from a curriculum development activity with teachers and children in primary school classrooms, using a framework for group discussion developed by Huthwaite International. The Centre for Science Education at Sheffield Hallam University and Huthwaite International worked with teachers from three…

  20. Online Reflective Group Discussion--Connecting First Year Undergraduate Students with Their Third Year Peers

    Science.gov (United States)

    Tsang, Annetta K. L.

    2011-01-01

    University professional programs seek to develop students as reflective practitioners. The ability to critically reflect is often assumed to occur along the way. The explicit development of critical reflective skills among students is challenging. This study describes the utilization of online group discussion for critical reflection and provides…

  1. Talking Science: The Research Evidence on the Use of Small Group Discussions in Science Teaching

    Science.gov (United States)

    Bennett, Judith; Hogarth, Sylvia; Lubben, Fred; Campbell, Bob; Robinson, Alison

    2010-01-01

    This paper reports the findings of two systematic reviews of the use and effects of small group discussions in high school science teaching. Ninety-four studies were included in an overview (systematic map) of work in the area, and 24 studies formed the basis of the in-depth reviews. The reviews indicate that there is considerable diversity in the…

  2. Influence of a Teacher's Scaffolding Moves during Child-Led Small-Group Discussions

    Science.gov (United States)

    Jadallah, May; Anderson, Richard C.; Nguyen-Jahiel, Kim; Miller, Brian W.; Kim, Il-Hee; Kuo, Li-Jen; Dong, Ting; Wu, Xiaoying

    2011-01-01

    The influence of one teacher's scaffolding moves on children's performance in free-flowing child-led small-group discussions was investigated. Three moves were examined: prompting for and praising the use of evidence, asking for clarification, and challenging. Lag sequential analysis was applied to a corpus of over 5,300 speaking turns during 30…

  3. Students discussing their mathematical ideas: Group-tests and mind-maps

    NARCIS (Netherlands)

    M. Pijls; D. de Kramer

    2008-01-01

    In an explorative research project, teachers experimented with new ideas to make their students discuss (i.e. show, explain, justify and reconstruct their work) their mathematical ideas with each other. Two kind of special tasks were developed: group tests and mind maps. Also, the role of the teache

  4. Quantifying the Effect of Discussion Group Membership on Technology Adoption and Farm Profit on Dairy Farms

    Science.gov (United States)

    Hennessy, Thia; Heanue, Kevin

    2012-01-01

    Purpose: Participatory extension, specifically farm discussion groups, has become a very popular form of agricultural extension in Ireland. The purpose of this article is to assess its effectiveness in promoting the adoption of new technologies and improving farm profit. Design/Methodology/Approach: Following a review of the background and theory…

  5. A High-Leverage Language Teaching Practice: Leading an Open-Ended Group Discussion

    Science.gov (United States)

    Kearney, Erin

    2015-01-01

    In response to calls for more practice-based teacher education, this study investigated the way in which two high-performing novice world language teachers, one in Spanish and one in Latin, implemented a high-leverage teaching practice, leading an open-ended group discussion. Observational data revealed a number of constituent micro-practices. The…

  6. Preparing for microbicide trials in Rwanda: Focus group discussions with Rwandan women and men

    NARCIS (Netherlands)

    N. Veldhuijzen; J. Nyinawabega; M. Umulisa; B. Kankindi; E. Geubbels; P. Basinga; J. Vyankandondera; J. van de Wijgert

    2006-01-01

    The acceptability and feasibility of microbicide studies and future microbicide use are influenced by existing norms and values regarding sexual and contraceptive behaviour. In preparation for microbicide research in Rwanda, focus group discussions were conducted to assess sexual and contraceptive b

  7. Evaluating Impact of Small-Group Discussion on Learning Utilizing a Classroom Response System

    Science.gov (United States)

    Flosason, Thorhallur O.; McGee, Heather M.; Diener-Ludwig, Lori

    2015-01-01

    Classroom response systems (also referred to as clickers) can enhance learning outcomes and are generally viewed favorably by students and instructors alike. The current study used an alternating treatments design to examine whether discussing questions in small groups before responding to clicker questions during lecture improved accurate…

  8. Women's experiences of participation in a pregnancy and postnatal group incorporating yoga and facilitated group discussion: a qualitative evaluation.

    Science.gov (United States)

    Doran, Frances; Hornibrook, Julie

    2013-03-01

    This paper reports on a small qualitative research study which explored women's experiences of participation in a pregnancy and postnatal group that incorporated yoga and facilitated discussion. The group is offered through a community based feminist non-government women's health Centre in Northern NSW Australia. The purpose of the research was to explore women's experiences of attending this pregnancy and postnatal group. An exploratory qualitative approach was used to explore women's experiences of attending the group. Fifteen women participated in individual, in-depth face-to-face interviews. Interviews were recorded and transcribed verbatim. Thematic analysis was undertaken to analyse the qualitative data. Six themes were developed, one with 3 subthemes. One theme was labelled as: 'the pregnancy and motherhood journey' and included 3 sub-themes which were labelled: 'preparation for birth', 'connecting with the baby' and 'sharing birth stories.' The other five themes were: 'feminine nurturing safe space', 'watching and learning the mothering', 'building mental health, well-being and connections', the "group like a rock and a seed' and 'different from mainstream'. This research adds to the overall body of knowledge about the value of yoga in pre and postnatal care. It demonstrates the value of sharing birth stories and the strong capacity women have to support one another, bringing benefits of emotional and social well-being, information, resources and support derived from group based models of care. Crown Copyright © 2012. Published by Elsevier Ltd. All rights reserved.

  9. Secret-key agreement over spatially correlated fast-fading multiple-antenna channels with public discussion

    KAUST Repository

    Zorgui, Marwen

    2015-06-14

    We consider secret-key agreement with public discussion over multiple-input multiple-output (MIMO) Rayleigh fast-fading channels under correlated environment. We assume that transmit, legitimate receiver and eavesdropper antennas are correlated. The legitimate receiver and the eavesdropper are assumed to have perfect channel knowledge while the transmitter has only knowledge of the correlation matrices. First, we derive the expression of the secret-key capacity under the considered setup. Then, we prove that the optimal transmit strategy achieving the secret-key capacity consists in transmitting independent Gaussian signals along the eingenvectors of the transmit correlation matrix. The powers allocated to each channel mode are determined as the solution to a numerical optimization problem that we derive. A necessary and sufficient condition for beamforming (i.e., transmitting along the strongest channel mode) to be capacity-achieving is derived. Finally, we analyze the impact of correlation matrices on the system performance and provide closed-form expressions of the gain/loss due to correlation in the high power regime.

  10. Teaching medical ethics: problem-based learning or small group discussion?

    Science.gov (United States)

    Heidari, Akram; Adeli, Seyyed-Hassan; Taziki, Sadegh-Ali; Akbari, Valliollahe; Ghadir, Mohammad-Reza; Moosavi-Movahhed, Seyyed-Majid; Ahangari, Roghayyeh; Sadeghi-Moghaddam, Parvaneh; Mirzaee, Mohammad-Rahim; Damanpak-Moghaddam, Vahid

    2013-01-01

    Lecture is the most common teaching method used in ethics education, while problem-based learning (PBL) and small group discussion (SGD) have been introduced as more useful methods. This study compared these methods in teaching medical ethics. Twenty students (12 female and 8 male) were randomly assigned into two groups. The PBL method was used in one group, and the other group was taught using the SGD method. Twenty-five open-ended questions were used for assessment and at the end of the course, a course evaluation sheet was used to obtain the students' views about the advantages and disadvantages of each teaching method, their level of satisfaction with the course, their interest in attending the sessions, and their opinions regarding the effect of teaching ethics on students' behaviors. The mean score in the PBL group (16.04 ± 1.84) was higher than the SGD group (15.48 ± 2.01). The satisfaction rates in the two groups were 3.00 ± 0.47 and 2.78 ± 0.83 respectively. These differences were not statistically significant. Since the mean score and satisfaction rate in the PBL group were higher than the SGD group, the PBL method is recommended for ethics education whenever possible.

  11. Facebook Discussion Groups Provide a Robust Worldwide Platform for Free Pathology Education.

    Science.gov (United States)

    Gonzalez, Raul S; Amer, Sadiq M; Yahia, Nejib Ben; Costa, Felipe D'Almeida; Noatay, Manu; Qiao, Jian-Hua; Rosado, Flavia G; Rosen, Yale; Sedassari, Bruno Tavares; Yantiss, Rhonda K; Gardner, Jerad M

    2017-05-01

    - Facebook (Menlo Park, California) is one of many online sites that provide potential educational tools for pathologists. We have each founded Facebook groups dedicated to anatomic pathology, in which members can share cases, ask questions, and contribute to discussions. - To report our experiences in founding and maintaining these Facebook groups and to characterize the contributed content. - We circulated a survey among the group founders, then compiled and analyzed the responses. - The groups varied in membership and in the quality of member contribution. Most posts were of pathology cases, although other topics (such as research articles) were also shared. All groups remained active and received posts from users all over the world, although all groups had many noncontributing members and received unwanted messages (which were screened and removed). Most founders were glad they had founded the groups because they provided an opportunity to both teach and learn. - Each analyzed Facebook group had a different character, and some downsides exist, but the groups all provided a no-cost way for pathologists and others across the world to interact online with many colleagues.

  12. Effect of Small Group Discussion in Residency Education Versus Conventional Education

    Directory of Open Access Journals (Sweden)

    Ali Tabrizi

    2016-06-01

    Full Text Available Introduction:There are various methods of training for medical students in different colleges. Fast knowledge transfer and maximum learning are the main goals of education. Due to the limited time and also high volume of content knowledge during residency, using the best methods of training can play an important role in enhancing the skills of residents. In the current study, small group discussion as a teaching method was compared with the traditional method. Methods:In this cohort study, two groups of residents that had finished a 4-year course of orthopedic residency training programs in Tabriz and Urmia universities of medical sciences was being examined. They were divided in two groups. In order to compare the impact of the training on residents, it was compared with the result of the State Board standardized exam. The number of residents passing the written test and the Objective Structural Clinical Examination (OSCE per year have been identified and compared with the groups under investigation. Results:Fifty-one residents, including 4 women (7.8% and 47 men (92.2%, were studied for this purpose. Success rate for the small group discussion in the written exam was 59.2% and in the OSCE was 24% (95% CI. On the other hand, the success rates for the group who were trained in the traditional way were 37% and 16.6% in the written exam and OSCE, respectively. In both cases the differences were significant. Conclusion:The small group discussion method is an effective method in residency training in surgical fields that increases medical students’ learning abilities compared to traditional methods of education.

  13. A Study on Contributory Group Key Agreements for Mobile Ad Hoc Networks

    Directory of Open Access Journals (Sweden)

    CH. V. Raghavendran

    2013-04-01

    Full Text Available Wireless networks, in particular Mobile Ad hoc Networks (MANETs have revolutionized the field of networking with increasing number of their commercial and military applications. Security on the other hand, is now an essential requirement for these applications. However, the limitations of the dynamic, infrastructure-less nature of MANETs impose major difficulties in establishing a secure framework suitable for such services. Security for MANETs is a dynamic area of research. Most of the traditional routing protocols proposed for MANETs are focused on routing only not on the security aspects. As in traditional wired networks, wireless networks also require security. Unlike the wired networks, where dedicated routers, servers control the network, in MANETs nodes act both as terminals and also as routers for other nodes. A popular mechanism to satisfy the security requirements is the Group Key Management in which the group key is to be shared by each group communication participant. But to establish and manage the group key efficiently imposes new challenges – especially in infrastructure less MANETs. The basic needs of such networks require that the group key schemes must demonstrate not only high performance but also fault-tolerance.

  14. Constructing UC Secure and Constant-Round Group Key Exchange Protocols via Secret Sharing

    Directory of Open Access Journals (Sweden)

    Sangjae Moon

    2008-07-01

    Full Text Available Group key exchange (GKE is one of the basic building blocks in securing group communication. A number of solutions to GKE problem have been proposed, but most of them are not scalable and require a number of rounds linear with the number of group members. We present a method of constructing constant-round and identity-based protocol via secret sharing for GKE within universally composability (UC framework. The resultant protocol focuses on round efficiency and three rounds of communication are required. The protocol allows the batch verification of messages signed by all other group participants. Moreover, compared with other identity-based protocols, the key generation center (KGC in our protocol is not always online.

  15. Constructing UC Secure and Constant-Round Group Key Exchange Protocols via Secret Sharing

    Directory of Open Access Journals (Sweden)

    Moon Sangjae

    2008-01-01

    Full Text Available Abstract Group key exchange (GKE is one of the basic building blocks in securing group communication. A number of solutions to GKE problem have been proposed, but most of them are not scalable and require a number of rounds linear with the number of group members. We present a method of constructing constant-round and identity-based protocol via secret sharing for GKE within universally composability (UC framework. The resultant protocol focuses on round efficiency and three rounds of communication are required. The protocol allows the batch verification of messages signed by all other group participants. Moreover, compared with other identity-based protocols, the key generation center (KGC in our protocol is not always online.

  16. An online monogenic diabetes discussion group: supporting families and fueling new research.

    Science.gov (United States)

    Perrone, Marie E; Carmody, David; Philipson, Louis H; Greeley, Siri Atma W

    2015-11-01

    Many online support groups are available for patients with rare disorders, but scant evidence is available on how effectively such groups provide useful information or valuable psychosocial support to their participants. It is also unclear to what extent physicians and researchers may learn more about these disorders by participating in such groups. To formally assess the utility of the Kovler Monogenic Diabetes Registry online discussion group for patients and families affected by KATP channel-related monogenic neonatal diabetes in providing psychosocial and informational support and in identifying concerns unique to patients with this rare form of diabetes. We qualitatively analyzed all 1,410 messages from the online group that consisted of 64 participants affected by KATP channel monogenic diabetes and 11 researchers. We utilized the Social Behavior Support Code to assign each message to a support category and deductive thematic analysis to identify discussion topics addressed by each message. 44% of messages provided/requested informational support, whereas 31.4% of the messages contained psychosocial/emotional support. The most popular topics of postings to the forums were diabetes treatment (503 messages) and neurodevelopmental concerns (472 messages). Participation in the discussion led researchers to modify survey instruments and design new studies focusing on specific topics of concern, such as sleep. We demonstrate that an online support group for a monogenic form of diabetes is an effective informational tool that also provides psychosocial support. Participation by researchers and care providers can inform future research directions and highlight issues of patient concern. Copyright © 2015 Elsevier Inc. All rights reserved.

  17. Research on Turnover Intention and Countermeasure of Key Employees in Xuzhou Coal Mining Groups

    Directory of Open Access Journals (Sweden)

    Gao Lehong

    2012-11-01

    Full Text Available In this study, we have a research of the turnover intention and countermeasure of key employees in xuzhou coal mining groups. Linear Structural Equation model (LISREL is used for the variable path analysis and a job satisfaction research has been done to reveale which variable is affect the key employee turnover entention significantly. Statistics show that the factors conversion cost, job satisfaction, compensation, opportunity, dull work, the colleague support degree, friends support degree have a significant influence on turnover intention of key employees. The staffs are dissatisfied with salary, welfare, promotion, communication in enterprise. The employee, who work in administer department, with high education background and no more than 5 year’s work experience and lower in administer level, no more than 2000 yuan income, have a stronger turnover intention. According to the results of the survey, the enterprise make a relevant management measures and achieved good effectiveness on prevent the key employees from turnovering.

  18. Malaysian cultural differences in knowledge, attitudes and practices related to erectile dysfunction: focus group discussions.

    Science.gov (United States)

    Low, W Y; Wong, Y L; Zulkifli, S N; Tan, H M

    2002-12-01

    This qualitative study aimed to examine cultural differences in knowledge, attitudes and practices related to erectile dysfunction (ED) utilizing focus group discussion. Six focus groups consisting of 66 men, 45-70-y-old were conducted-two Malay groups (n=18), two Chinese groups (n=25) and two Indian groups (n=23). Participants were purposely recruited from the general public on a voluntary basis with informed consent. Transcripts were analyzed using qualitative data analysis software ATLASti. The Malay and Chinese traditional remedies for preventing or treating ED are commonly recognized among all races. Many have a negative perception of someone with ED. Malay and Chinese men tended to blame their wife for their problem and thought that the problem might lead to extra-marital affairs, unlike the Indian men who attributed their condition to fate. Malays would prefer traditional medicine for the problem. The Chinese felt they would be more comfortable with a male doctor whilst this is not so with the Malays or Indians. Almost all prefer the doctor to initiate discussion on sexual issues related to their medical condition. There is a need for doctors to consider cultural perspectives in a multicultural society as a lack of understanding of this often contributes to an inadequate consultation.

  19. Qualitative research methods in drug abuse research: discussing the potential use of focus group in Brazil

    OpenAIRE

    Beatriz Carlini-Cotrim

    1996-01-01

    Descreve-se e discute-se o grupo focal, método qualitativo de coleta de dados de ampla aplicação na Saúde Pública. Especial ênfase é conferida às potencialidades do uso do grupo focal em investigações, na área de abuso de drogas.The focus group, a qualitative research method useful for Public Health investigation, is described and discussed. The potential application of the focus group method in drug abuse research in Brazil is emphasized.

  20. Asynchronous Group Key Distribution on top of the CC2420 Security Mechanisms for Sensor Networks

    DEFF Research Database (Denmark)

    Hansen, Morten Tranberg

    2009-01-01

    scheme with no time synchronization requirements. The scheme decreases the number of key updates by providing them on an as needed basis according to the amount of network traffic. We evaluate the CC2420 radio security mechanism and show how to use it as a basis to implement secure group communication......A sensor network is a network consisting of small, inexpensive, low-powered sensor nodes that communicate to complete a common task. Sensor nodes are characterized by having limited communication and computation capabilities, energy, and storage. They often are deployed in hostile environments...... creating a demand for encryption and authentication of the messages sent between them. Due to severe resource constraints on the sensor nodes, efficient key distribution schemes and secure communication protocols with low overhead are desired. In this paper we present an asynchronous group key distribution...

  1. Making Space to Sensemake: Epistemic Distancing in Small Group Physics Discussions

    CERN Document Server

    Conlin, Luke D

    2015-01-01

    Students in inquiry science classrooms face an essential tension between sharing new ideas and critically evaluating those ideas. Both sides of this tension pose affective risks that can discourage further discussion, such as the embarrassment of having an idea rejected. This paper presents a close discourse analysis of three groups of undergraduate physics students in their first discussions of the semester, detailing how they navigate these tensions to create a safe space to make sense of physics together. A central finding is that students and instructors alike rely on a common discursive resource, epistemic distancing, to protect affect while beginning to engage with ideas in productive ways. The groups differ in how soon, how often, and how deeply they engage in figuring out mechanisms together, and these differences can be explained, in part, by differences in how they epistemically distance themselves from their claims. Implications for research include the importance of considering the coupled dynamic...

  2. Two-round contributory group key exchange protocol for wireless network environments

    Directory of Open Access Journals (Sweden)

    Wu Tsu-Yang

    2011-01-01

    Full Text Available Abstract With the popularity of group-oriented applications, secure group communication has recently received much attention from cryptographic researchers. A group key exchange (GKE protocol allows that participants cooperatively establish a group key that is used to encrypt and decrypt transmitted messages. Hence, GKE protocols can be used to provide secure group communication over a public network channel. However, most of the previously proposed GKE protocols deployed in wired networks are not fully suitable for wireless network environments with low-power computing devices. Subsequently, several GKE protocols suitable for mobile or wireless networks have been proposed. In this article, we will propose a more efficient group key exchange protocol with dynamic joining and leaving. Under the decision Diffie-Hellman (DDH, the computation Diffie-Hellman (CDH, and the hash function assumptions, we demonstrate that the proposed protocol is secure against passive attack and provides forward/backward secrecy for dynamic member joining/leaving. As compared with the recently proposed GKE protocols, our protocol provides better performance in terms of computational cost, round number, and communication cost.

  3. Key papers by the Working Group on Energy. Hauptvortraege des Arbeitskreises Energie; 56. Physikertagung Berlin

    Energy Technology Data Exchange (ETDEWEB)

    Unger, H. (ed.) (Bochum Univ. (Germany))

    1992-01-01

    The eight key papers given by the Working Group on Energy at the 56 th conference of physicists in Berlin, 30th March to 3rd April 1992, focussed on issues of future energy supply, while using polluting fuels at a reduced rate. Each of the papers was abstracted separately. (BWI)

  4. Traditional male circumcision in Uganda: a qualitative focus group discussion analysis.

    Directory of Open Access Journals (Sweden)

    Amir Sabet Sarvestani

    Full Text Available BACKGROUND: The growing body of evidence attesting to the effectiveness of clinical male circumcision in the prevention of HIV/AIDS transmission is prompting the majority of sub-Saharan African governments to move towards the adoption of voluntary medical male circumcision (VMMC. Even though it is recommended to consider collaboration with traditional male circumcision (TMC providers when planning for VMMC, there is limited knowledge available about the TMC landscape and traditional beliefs. METHODOLOGY AND MAIN FINDINGS: During 2010-11 over 25 focus group discussions (FGDs were held with clan leaders, traditional cutters, and their assistants to understand the practice of TMC in four ethnic groups in Uganda. Cultural significance and cost were among the primary reasons cited for preferring TMC over VMMC. Ethnic groups in western Uganda circumcised boys at younger ages and encountered lower rates of TMC related adverse events compared to ethnic groups in eastern Uganda. Cutting styles and post-cut care also differed among the four groups. The use of a single razor blade per candidate instead of the traditional knife was identified as an important and recent change. Participants in the focus groups expressed interest in learning about methods to reduce adverse events. CONCLUSION: This work reaffirmed the strong cultural significance of TMC within Ugandan ethnic groups. Outcomes suggest that there is an opportunity to evaluate the involvement of local communities that still perform TMC in the national VMMC roll-out plan by devising safer, more effective procedures through innovative approaches.

  5. Adding to the mix: Students use of Facebook groups and blackboard discussion forums in higher education

    Directory of Open Access Journals (Sweden)

    Mike Kent

    2016-09-01

    Full Text Available This paper reports on a case study of the use of Facebook in learning and teaching in higher education. Facebook was used as a venue for online discussion to support the existing Learning Management System (in this case Blackboard in the unit Internet Collaboration and Organisation as part of the Internet Communications degree taught fully online through Open Universities Australia (OUA. Students’ posts to both Facebook and the Blackboard discussion forum were analysed for content, length, and when throughout the study period they were posted. This is significant as much of the previous work in this area has relied on students self-reporting, rather than direct observation of student behaviour. These results were then compared to earlier instances of the same unit that ran within the previous twelve months, one fully online with OUA only using the Blackboard discussion group, and a second taught at Curtin University with both blended learning for students at the University’s Bentley campus as well as fully online for external students, that utilised both Blackboard and Facebook. The results show that Facebook greatly increases the level of student activity in online discussions, both absolutely and in the level of sustained activity across the unit’s study period. Facebook groups also had a different pattern of content from Blackboard. In Blackboard discussion is more focused on the set unit learning content, in Facebook students were using the groups to discuss administration and assignments and also bring in additional material from outside the units set learning materials. Facebook posts, while more sustained over the semester, were shorter in length. This study found that the addition of a Facebook discussion forum does not noticeably impact on the use of Blackboard’s discussion forum, but rather adds a new dimension to the mix of online interaction. The paper concludes that there is value in using both of these forums for student

  6. Observing real-world groups in the virtual field: The analysis of online discussion.

    Science.gov (United States)

    Giles, David C

    2016-09-01

    This article sets out to establish the naturalistic study of online social communication as a substantive topic in social psychology and to discuss the challenges of developing methods for a formal analysis of the structural and interactional features of message threads on discussion forums. I begin by outlining the essential features of online communication and specifically discussion forum data, and the important ways in which they depart from spoken conversation. I describe the handful of attempts to devise systematic analytic techniques for adapting methods such as conversation and discourse analysis to the study of online discussion. I then present a case study of a thread from the popular UK parenting forum Mumsnet which presents a number of challenges for existing methods, and examine some of the interactive phenomena typical of forums. Finally, I consider ways in which membership categorization analysis and social identity theory can complement one another in the exploration of both group processes and the rhetorical deployment of identities as dynamic phenomena in online discussion.

  7. Scalable Group Key Management for Secure Multicast: A Taxonomy and New Directions

    Science.gov (United States)

    Zhu, Sencun; Jajodia, Sushil

    Many multicast-based applications (e.g., pay-per-view, online auction, and teleconferencing) require a secure communication model to prevent disclosure of distributed data to unauthorized users. One solution for achieving this goal is to let all members in a group share a key that is used for encrypting data. To provide backward and forward confidentiality [23] (i.e., a new member should not be allowed to decrypt the earlier communication and a revoked user should not be able to decrypt the future communication), this shared group key should be updated and redistributed to all authorized members in a secure, reliable, and timely fashion upon a membership change. This process is referred to as group rekeying.

  8. A Discussion of Oxygen Recovery Definitions and Key Performance Parameters for Closed-Loop Atmosphere Revitalization Life Support Technology Development

    Science.gov (United States)

    Abney, Morgan B.; Perry, Jay L.

    2016-01-01

    Over the last 55 years, NASA has evolved life support for crewed space exploration vehicles from simple resupply during Project Mercury to the complex and highly integrated system of systems aboard the International Space Station. As NASA targets exploration destinations farther from low Earth orbit and mission durations of 500 to 1000 days, life support systems must evolve to meet new requirements. In addition to having more robust, reliable, and maintainable hardware, limiting resupply becomes critical for managing mission logistics and cost. Supplying a crew with the basics of food, water, and oxygen become more challenging as the destination ventures further from Earth. Aboard ISS the Atmosphere Revitalization Subsystem (ARS) supplies the crew's oxygen demand by electrolyzing water. This approach makes water a primary logistics commodity that must be managed carefully. Chemical reduction of metabolic carbon dioxide (CO2) provides a method of recycling oxygen thereby reducing the net ARS water demand and therefore minimizing logistics needs. Multiple methods have been proposed to achieve this recovery and have been reported in the literature. However, depending on the architecture and the technology approach, "oxygen recovery" can be defined in various ways. This discontinuity makes it difficult to compare technologies directly. In an effort to clarify community discussions of Oxygen Recovery, we propose specific definitions and describe the methodology used to arrive at those definitions. Additionally, we discuss key performance parameters for Oxygen Recovery technology development including challenges with comparisons to state-of-the-art.

  9. Qualitative findings from focus group discussions on hand hygiene compliance among health care workers in Vietnam.

    Science.gov (United States)

    Salmon, Sharon; McLaws, Mary-Louise

    2015-10-01

    It is accepted by hospital clinical governance that every clinician's "duty of care" includes hand hygiene, yet globally, health care workers (HCWs) continue to struggle with compliance. Focus group discussions were conducted to explore HCWs' barriers to hand hygiene in Vietnam. Twelve focus group discussions were conducted with HCWs from 6 public hospitals across Hanoi, Vietnam. Discussions included participants' experiences with and perceptions concerning hand hygiene. Tape recordings were transcribed verbatim and then translated into English. Thematic analysis was conducted by 2 investigators. Expressed frustration with high workload, limited access to hand hygiene solutions, and complicated guidelines that are difficult to interpret in overcrowded settings were considered by participants to be bona fide reasons for noncompliance. No participant acknowledged hand hygiene as a duty of care practice for her or his patients. Justification for noncompliance was the observation that visitors did not perform hand hygiene. HCWs did acknowledge a personal duty of care when hand hygiene was perceived to benefit her or his own health, and then neither workload or environmental challenges influenced compliance. Limited resources in Vietnam are amplified by overcrowded conditions and dual bed occupancy. Yet without a systematic systemic duty of care to patient safety, changes to guidelines and resources might not immediately improve compliance. Thus, introducing routine hand hygiene must start with education programs focusing on duty of care. Copyright © 2015 Association for Professionals in Infection Control and Epidemiology, Inc. Published by Elsevier Inc. All rights reserved.

  10. Evaluation of Small Student-Led Discussion Groups as an Adjunct to a Course in Abnormal Psychology

    Science.gov (United States)

    White, Geoffry D.

    1978-01-01

    Presents data related to student involvement in biweekly student-led discussion groups in an undergraduate abnormal psychology course. Evaluates the degree to which students felt they benefited from discussion groups composed of similar and dissimilar students. (Author/AV)

  11. Barriers to Managing Fertility: Findings From the Understanding Fertility Management in Contemporary Australia Facebook Discussion Group.

    Science.gov (United States)

    Holton, Sara; Rowe, Heather; Kirkman, Maggie; Jordan, Lynne; McNamee, Kathleen; Bayly, Christine; McBain, John; Sinnott, Vikki; Fisher, Jane

    2016-02-15

    As part of research investigating the complexities of managing fertility in Australia, public opinions about how Australians manage their fertility were sought from women and men. To identify public opinion about sexual and reproductive health in Australia. To ensure access to a diverse group of people throughout Australia, an online group was advertised and convened on Facebook from October through December 2013. In a closed-group moderated discussion, participants responded to questions about how people in Australia attempt to manage three aspects of fertility: avoiding pregnancy, achieving pregnancy, and difficulties conceiving. Nonidentifiable demographic information was sought; no personal accounts of fertility management were requested. The discussion transcript was analyzed thematically. There were 61 female and 2 male Facebook users aged 18 to 50 years living in Australia participating in the study. Four main themes about fertility management were identified: access, geographical location, knowledge, and cost. Participants reported that young people and people from rural areas face barriers accessing contraception and fertility services. Limited knowledge about sex and reproduction and the cost of fertility services and contraception were also said to impede effective fertility management. Reasons for inequalities in effective fertility management that are amenable to change were identified. Facebook is an effective method for gaining insights into public opinion about sexual and reproductive health.

  12. Barriers to Managing Fertility: Findings From the Understanding Fertility Management in Contemporary Australia Facebook Discussion Group

    Science.gov (United States)

    Rowe, Heather

    2016-01-01

    Background As part of research investigating the complexities of managing fertility in Australia, public opinions about how Australians manage their fertility were sought from women and men. Objective To identify public opinion about sexual and reproductive health in Australia. Methods To ensure access to a diverse group of people throughout Australia, an online group was advertised and convened on Facebook from October through December 2013. In a closed-group moderated discussion, participants responded to questions about how people in Australia attempt to manage three aspects of fertility: avoiding pregnancy, achieving pregnancy, and difficulties conceiving. Nonidentifiable demographic information was sought; no personal accounts of fertility management were requested. The discussion transcript was analyzed thematically. Results There were 61 female and 2 male Facebook users aged 18 to 50 years living in Australia participating in the study. Four main themes about fertility management were identified: access, geographical location, knowledge, and cost. Participants reported that young people and people from rural areas face barriers accessing contraception and fertility services. Limited knowledge about sex and reproduction and the cost of fertility services and contraception were also said to impede effective fertility management. Conclusions Reasons for inequalities in effective fertility management that are amenable to change were identified. Facebook is an effective method for gaining insights into public opinion about sexual and reproductive health. PMID:26878865

  13. Two recommendations to the Teaching of EFL Extensive Reading: Group Discussion and Suitable Reading Material Selection

    Institute of Scientific and Technical Information of China (English)

    李莉

    2008-01-01

    <正>This paper is going to review the way in which EFL extensive reading is usually taught at mainly college level in China; and then make two recommendations in terms of classroom activity and the selection of extensive reading material for the purpose of trying to get students better involved in classroom activity, and to arouse their interest in reading. Group discussion and suitable reading material selection are suggested to be adopted in the traditional extensive reading class to improve the classroom atmosphere and the teaching & learning effects.

  14. A Study on Group Key Agreement in Sensor Network Environments Using Two-Dimensional Arrays

    Directory of Open Access Journals (Sweden)

    Moon-Seog Jun

    2011-08-01

    Full Text Available These days, with the emergence of the concept of ubiquitous computing, sensor networks that collect, analyze and process all the information through the sensors have become of huge interest. However, sensor network technology fundamentally has wireless communication infrastructure as its foundation and thus has security weakness and limitations such as low computing capacity, power supply limitations and price. In this paper, and considering the characteristics of the sensor network environment, we propose a group key agreement method using a keyset pre-distribution of two-dimension arrays that should minimize the exposure of key and personal information. The key collision problems are resolved by utilizing a polygonal shape’s center of gravity. The method shows that calculating a polygonal shape’s center of gravity only requires a very small amount of calculations from the users. The simple calculation not only increases the group key generation efficiency, but also enhances the sense of security by protecting information between nodes.

  15. Activities in a social networking-based discussion group by endoscopic retrograde cholangiopancreatography doctors.

    Science.gov (United States)

    Kang, Xiaoyu; Zhao, Lina; Liu, Na; Wang, Xiangping; Zhang, Rongchun; Liu, Zhiguo; Liang, Shuhui; Yao, Shaowei; Tao, Qin; Jia, Hui; Pan, Yanglin; Guo, Xuegang

    2017-10-01

    Online social networking is increasingly being used among medical practitioners. However, few studies have evaluated its use in therapeutic endoscopy. Here, we aimed to analyze the shared topics and activities of a group of endoscopic retrograde cholangiopancreatography (ERCP) doctors in a social networking-based endoscopic retrograde cholangiopancreatography discussion group (EDG). Six ERCP trainers working in Xijing Hospital and 48 graduated endoscopists who had finished ERCP training in the same hospital were invited to join in EDG. All group members were informed not to divulge any private information of patients when using EDG. The activities of group members on EDG were retrospectively extracted. The individual data of the graduated endoscopists were collected by a questionnaire. From June 2014 to May 2015, 6924 messages were posted on EDG, half of which were ERCP related. In total, 214 ERCP-related topics were shared, which could be categorized into three types: sharing experience/cases (52.3%), asking questions (38.3%), and sharing literatures/advances (9.3%). Among the 48 graduated endoscopists, 21 had a low case volume of less than 50 per year and 27 had a high volume case volume of 50 or more. High-volume graduated endoscopists posted more ERCP-related messages (P=0.008) and shared more discussion topics (P=0.003) compared with low-volume graduated endoscopists. A survey showed that EDG was useful for graduated endoscopists in ERCP performance and management of post-ERCP complications, etc. A wide range of ERCP-related topics were shared on the social networking-based EDG. The ERCP-related behaviors on EDG were more active in graduated endoscopists with an ERCP case volume of more than 50 per year.

  16. Stakeholders' Perceptions on Shortage of Healthcare Workers in Primary Healthcare in Botswana: Focus Group Discussions.

    Directory of Open Access Journals (Sweden)

    Oathokwa Nkomazana

    Full Text Available An adequate health workforce force is central to universal health coverage and positive public health outcomes. However many African countries have critical shortages of healthcare workers, which are worse in primary healthcare. The aim of this study was to explore the perceptions of healthcare workers, policy makers and the community on the shortage of healthcare workers in Botswana.Fifteen focus group discussions were conducted with three groups of policy makers, six groups of healthcare workers and six groups of community members in rural, urban and remote rural health districts of Botswana. All the participants were 18 years and older. Recruitment was purposive and the framework method was used to inductively analyse the data.There was a perceived shortage of healthcare workers in primary healthcare, which was believed to result from an increased need for health services, inequitable distribution of healthcare workers, migration and too few such workers being trained. Migration was mainly the result of unfavourable personal and family factors, weak and ineffective healthcare and human resources management, low salaries and inadequate incentives for rural and remote area service.Botswana has a perceived shortage of healthcare workers, which is worse in primary healthcare and rural areas, as a result of multiple complex factors. To address the scarcity the country should train adequate numbers of healthcare workers and distribute them equitably to sufficiently resourced healthcare facilities. They should be competently managed and adequately remunerated and the living conditions and rural infrastructure should also be improved.

  17. [Research progress on standards of commodity classes of Chinese materia medica and discussion on several key problems].

    Science.gov (United States)

    Yang, Guang; Zeng, Yan; Guo, Lan-Ping; Huang, Lu-Qi; Jin, Yan; Zheng, Yu-Guang; Wang, Yong-Yan

    2014-05-01

    Standards of commodity classes of Chinese materia medica is an important way to solve the "Lemons Problem" of traditional Chinese medicine market. Standards of commodity classes are also helpful to rebuild market mechanisms for "high price for good quality". The previous edition of commodity classes standards of Chinese materia medica was made 30 years ago. It is no longer adapted to the market demand. This article researched progress on standards of commodity classes of Chinese materia medica. It considered that biological activity is a better choice than chemical constituents for standards of commodity classes of Chinese materia medica. It is also considered that the key point to set standards of commodity classes is finding the influencing factors between "good quality" and "bad quality". The article also discussed the range of commodity classes of Chinese materia medica, and how to coordinate standards of pharmacopoeia and commodity classes. According to different demands, diversiform standards can be used in commodity classes of Chinese materia medica, but efficacy is considered the most important index of commodity standard. Decoction pieces can be included in standards of commodity classes of Chinese materia medica. The authors also formulated the standards of commodity classes of Notoginseng Radix as an example, and hope this study can make a positive and promotion effect on traditional Chinese medicine market related research.

  18. Equine Welfare Assessment: Exploration of British Stakeholder Attitudes Using Focus-Group Discussions.

    Science.gov (United States)

    Horseman, Susan V; Hockenhull, Jo; Buller, Henry; Mullan, Siobhan; Barr, Alistair R S; Whay, Helen R

    2017-01-01

    The equine industry in Great Britain has not been subject to the same pressures as the farming industry to engage with welfare assessment, but this may change as concern about equine welfare increases. Stakeholder attitudes toward welfare assessment may impact the implementation of welfare assessment practices. Focus-group discussions regarding welfare assessment were conducted with 6 equine stakeholder groups: leisure horse owners (caregivers; n = 4), grooms (n = 5), veterinary surgeons (n = 3), welfare scientists (n = 4), welfare charity workers (n = 5), and professional riders (n = 4). Three themes emerged from the discussions: (a) Participants predominantly interpreted welfare assessment as a means of identifying and correcting poor welfare in an immediate way; (b) participants believed that horse welfare varied over time; and (c) attributes of the assessor were viewed as an important consideration for equine welfare assessment. The views of equine industry members give insight into the value welfare assessments may have to the industry and how equine welfare assessment approaches can achieve credibility within the industry and increase the positive impact of welfare assessments on equine welfare.

  19. KEY ISSUES FOR THE ASSESSMENT OF THE ALLERGENIC POTENTIAL OF GENETICALLY MODIFIED FOODS: BREAKOUT GROUP REPORTS

    Science.gov (United States)

    AbstractOn the final afternoon of the Workshop, Assessment of the Allergenic Potential of Genetically Modified Foods, speakers and participants met in breakout groups to discuss specific questions in the areas of 1) Use of Human Clinical Data; 2) Animal Models to Assess Food ...

  20. A new two-round dynamic authenticated contributory group key agreement protocol using elliptic curve Diffie–Hellman with privacy preserving public key infrastructure

    Indian Academy of Sciences (India)

    Vankamamidi S Naresh; Nistala V E S Murthy

    2015-10-01

    In this paper a new two-round authenticated contributory group key agreement based on Elliptic Curve Diffie–Hellman protocol with Privacy Preserving Public Key Infrastructure (PP-PKI) is introduced and is extended to a dynamic authenticated contributory group key agreement with join and leave protocols for dynamic groups. The proposed protocol provides such security attributes as forward secrecy, backward secrecy, and defense against man in the middle (MITM) and Unknown keyshare security attacks and also authentication along with privacy preserving attributes like anonymity, traceability and unlinkability. In the end, they are compared with other popular Diffie–Hellman and Elliptic Curve Diffie–Hellman based group key agreement protocols and the results are found to be satisfactory.

  1. A Group Key Management Protocol Based on Weight-Balanced 2-3 Tree for Wireless Sensor Networks

    CERN Document Server

    Yao, Lin; Xia, Feng; Wu, Guowei; Lin, Qiang

    2012-01-01

    Multicast in Wireless Sensor Networks (WSNs) is an attractive mechanism for delivering data to multiple receivers as it saves bandwidth. To guarantee the security of multicast, the group key is used to encrypt and decrypt the packages. However, providing key management services in WSNs is complicated because sensor nodes possess limited resources of computing, storage and communication. To address the balance between security and limited resources, a multicast group key management protocol based on the weight-balanced 2-3 tree is proposed to generate, distribute, and update the group key securely and efficiently. The decentralized group key management method is employed. A weight-balanced 2-3 key tree is formed in every subgroup. Instead of using the conventional symmetric and non-symmetric encryption algorithms, the Maximum Distance Separable (MDS) code technique is used to distribute the multicast key dynamically. During the key updating, a series of adjustment rules are summarized to keep the tree weight-b...

  2. Exploration and Practice of Improving College Students’Speaking Com-petence through Group Discussion

    Institute of Scientific and Technical Information of China (English)

    YAN Jin-zhong

    2013-01-01

    The aim of English teaching is not only to make the students learn new words and grammar, answer multiple- choice questions to get good scores, but also to enhance the students’abilities of the integrated application of English, speaking and listen⁃ing in particular. The ultimate goal of learning English is to use English to communicate with others in the future jobs and real life. However, the non-English majors have great trouble speaking English in class and in real life. Such ways as Socratic dialogues, cause analysis and questionnaire are used to investigate the reasons. In order to improve speaking ability, group discussion is used in class. In consequence, the students have more interest, motivation, courage and confidence in speaking English. Meanwhile, they have also established the concept of using what they learned in class, in practical work and real life.

  3. Which Cognitive Processes Support Learning during Small-Group Discussion? The Role of Providing Explanations and Listening to Others

    Science.gov (United States)

    van Blankenstein, Floris M.; Dolmans, Diana H. J. M.; van der Vleuten, Cees P. M.; Schmidt, Henk G.

    2011-01-01

    Seventy students participated in an experiment to measure the effects of either providing explanations or listening during small group discussions on recall of related subject-matter studied after the discussion. They watched a video of a small group discussing a problem. In the first experimental condition, the video was stopped at various points…

  4. Which cognitive processes support learning during small-group discussion? The role of providing explanations and listening to others

    NARCIS (Netherlands)

    F.M. van Blankenstein (Floris); D.H.J.M. Dolmans (Diana); C.P.M. van der Vleuten (Cees); H.G. Schmidt (Henk)

    2011-01-01

    textabstractSeventy students participated in an experiment to measure the effects of either providing explanations or listening during small group discussions on recall of related subject-matter studied after the discussion. They watched a video of a small group discussing a problem. In the first

  5. Multiplicity: discussion points from the Statisticians in the Pharmaceutical Industry multiplicity expert group.

    Science.gov (United States)

    Phillips, Alan; Fletcher, Chrissie; Atkinson, Gary; Channon, Eddie; Douiri, Abdel; Jaki, Thomas; Maca, Jeff; Morgan, David; Roger, James Henry; Terrill, Paul

    2013-01-01

    In May 2012, the Committee of Health and Medicinal Products issued a concept paper on the need to review the points to consider document on multiplicity issues in clinical trials. In preparation for the release of the updated guidance document, Statisticians in the Pharmaceutical Industry held a one-day expert group meeting in January 2013. Topics debated included multiplicity and the drug development process, the usefulness and limitations of newly developed strategies to deal with multiplicity, multiplicity issues arising from interim decisions and multiregional development, and the need for simultaneous confidence intervals (CIs) corresponding to multiple test procedures. A clear message from the meeting was that multiplicity adjustments need to be considered when the intention is to make a formal statement about efficacy or safety based on hypothesis tests. Statisticians have a key role when designing studies to assess what adjustment really means in the context of the research being conducted. More thought during the planning phase needs to be given to multiplicity adjustments for secondary endpoints given these are increasing in importance in differentiating products in the market place. No consensus was reached on the role of simultaneous CIs in the context of superiority trials. It was argued that unadjusted intervals should be employed as the primary purpose of the intervals is estimation, while the purpose of hypothesis testing is to formally establish an effect. The opposing view was that CIs should correspond to the test decision whenever possible. Copyright © 2013 John Wiley & Sons, Ltd.

  6. Factors influencing food choices of adolescents: findings from focus-group discussions with adolescents.

    Science.gov (United States)

    Neumark-Sztainer, D; Story, M; Perry, C; Casey, M A

    1999-08-01

    To assess adolescents' perceptions about factors influencing their food choices and eating behaviors. Data were collected in focus-group discussions. The study population included 141 adolescents in 7th and 10th grade from 2 urban schools in St Paul, Minn, who participated in 21 focus groups. Data were analyzed using qualitative research methodology, specifically, the constant comparative method. Factors perceived as influencing food choices included hunger and food cravings, appeal of food, time considerations of adolescents and parents, convenience of food, food availability, parental influence on eating behaviors (including the culture or religion of the family), benefits of foods (including health), situation-specific factors, mood, body image, habit, cost, media, and vegetarian beliefs. Major barriers to eating more fruits, vegetables, and dairy products and eating fewer high-fat foods included a lack of sense of urgency about personal health in relation to other concerns, and taste preferences for other foods. Suggestions for helping adolescents eat a more healthful diet include making healthful food taste and look better, limiting the availability of unhealthful options, making healthful food more available and convenient, teaching children good eating habits at an early age, and changing social norms to make it "cool" to eat healthfully. The findings suggest that if programs to improve adolescent nutrition are to be effective, they need to address a broad range of factors, in particular environmental factors (e.g., the increased availability and promotion of appealing, convenient foods within homes schools, and restaurants).

  7. Teacher Identity and the Marketizised Society. Discursive Constructions in Teachers’ Discussion Groups

    Directory of Open Access Journals (Sweden)

    Sara Irisdotter Aldenmyr

    2010-11-01

    Full Text Available In the latest decennium, there have been several and gradual changes in the Swedish and other European school systems. The steering system has become more decentralized and the entire school system is now a part of the freedom of trade. Schools are competing with each other and this has, according to previous research, an effect on how teachers think about, and carry out their everyday activities (Gerwitz et al. 1995; Irisdotter 2006. How teachers think about themselves, their students and the educational task is of great importance for the social climate of the classroom and, in the longer run, society in general. The current study dicusses how teachers‘ identities and self-understandings are influenced by the marketization of society. The material analysed consists of group discussions in three different teacher groups in compulsory school in Sweden. Questions raised are: Can teachers work within the context of marketization and yet relate to it with an attitude of self-awareness and critical reflection? And how can teachers deal with both traditional teacher values and progressive, democratic values that may be in conflict with the conditions of a marketizised school system?

  8. A Note on an Improved Self-Healing Group Key Distribution Scheme

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    Hua Guo

    2015-09-01

    Full Text Available In 2014, Chen et al. proposed a one-way hash self-healing group key distribution scheme for resource-constrained wireless networks in the journal of Sensors (14(14:24358-24380, doi: 10.3390/ s141224358. They asserted that their Scheme 2 achieves mt-revocation capability, mt-wise forward secrecy, any-wise backward secrecy and has mt-wise collusion attack resistance capability. Unfortunately, this paper pointed out that their scheme does not satisfy the forward security, mt-revocation capability and mt-wise collusion attack resistance capability.

  9. The Key Practice, Discuss and Debate Ideas: Conceptual Framework, Literature Review, and Provisional Learning Progressions for Argumentation. Research Report. ETS RR-15-33

    Science.gov (United States)

    Deane, Paul; Song, Yi

    2015-01-01

    In this paper, we provide a comprehensive literature review on the development of key argumentation skills to lay a foundation for a framework of the key practice, discuss and debate ideas, which is centrally involved in the expectations for academic reading and writing. Specifically, the framework includes 5 phases of core activities and related…

  10. A Provably Secure Revocable ID-Based Authenticated Group Key Exchange Protocol with Identifying Malicious Participants

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    Tsu-Yang Wu

    2014-01-01

    Full Text Available The existence of malicious participants is a major threat for authenticated group key exchange (AGKE protocols. Typically, there are two detecting ways (passive and active to resist malicious participants in AGKE protocols. In 2012, the revocable identity- (ID- based public key system (R-IDPKS was proposed to solve the revocation problem in the ID-based public key system (IDPKS. Afterwards, based on the R-IDPKS, Wu et al. proposed a revocable ID-based AGKE (RID-AGKE protocol, which adopted a passive detecting way to resist malicious participants. However, it needs three rounds and cannot identify malicious participants. In this paper, we fuse a noninteractive confirmed computation technique to propose the first two-round RID-AGKE protocol with identifying malicious participants, which is an active detecting way. We demonstrate that our protocol is a provably secure AGKE protocol with forward secrecy and can identify malicious participants. When compared with the recently proposed ID/RID-AGKE protocols, our protocol possesses better performance and more robust security properties.

  11. Thinking About Opponent Behavior in Crisis and Conflict: A Generic Model for Analysis and Group Discussion

    Science.gov (United States)

    1991-01-01

    relevant strategies will have been surfaced and considered, and that "the gameboard " will be understood. Cufturo-Free Structure Our framework is intended...the gameboard . 21 Identifying Key Variables and Developing Hierarchies The next step is to identify and name key variables (which some may think of as

  12. Communication of geohazard risks by focus group discussions in the Mount Cameroon area, Cameroon.

    Science.gov (United States)

    del Marmol, M.-A.; Suh Atanga, M. Bi; Njome, S.; Mafany Teke, G.; Jacobs, P.; Suh, C. E.

    2012-04-01

    The inappropriate translation of scientific information of geohazard (volcanic, landslide and crater lake outgassing) risks to any local population leaves people with incongruent views of the real dangers. Initial workshops organized under the supervision of the VLIR-OI (Flemish Interuniversity Council - Own Initiatives) members have led to the deployment of billboards as requested and drawn up by the locals. The VLIR-OI project has also organized focus group discussions (FGD) with the local stakeholders to find out in various cities, the state of preparedness, the response to emergency situations, the recovery from the emergency and the mitigation. Researchers have preferred open discussion with the local population and its representatives in order to elicit information that otherwise might not be found on a structured questionnaire. FGD provide a meaningful interactive opportunity to collect information and reflection on a wide range of input. The method provides an insight into problems that require a solution through a process of discovering the meaning attributed to certain events or issues. In this research four cardinal points as preparedness, response, recovery and mitigation (Fothergill, 1996) guided the FGD. The population (i.e. local town councils) were constituted by a mix of chiefs, engineers, technicians and civil servants and government officials. In all the three city councils concerned, the engineers in charge complained about the lack of strategic planning, and about the missing of an elaborated strategy for disasters. They are aware of the existence of an organigram in the "Département de l'Action Civile" in Yaounde but never received any "strategic" document. Therefore inappropriate actions might be taken by the municipalities themselves. Fortunately all people interrogated at the FDG always mentioned solidarity in any event. Fothergill, 1996, Gender, Risk, and Disasters, Intern. Jour. of Mass Emergencies and Disasters, vol.14, n°1, 33-56

  13. Defibrillation beliefs of rural nurses: focus group discussions guided by the Theory of Planned Behaviour.

    Science.gov (United States)

    Dwyer, T A; Mosel Williams, L; Mummery, K

    2005-01-01

    The endorsement of the chain of survival concept and early defibrillation has challenged health professionals to reconsider their beliefs about how they respond to in-hospital resuscitation. In the rural context, where 24 hour coverage is not available nurse-initiated defibrillation is expected. Despite literature and policy change in Australia to allow nurses to initiate defibrillation, there is no current research that uses a systemic theoretical approach to investigate the specific beliefs of nurses and their use of defibrillators. The purpose of this study was to elicit a beginning understanding of the defibrillation beliefs of rural nurses. This research used focus groups within the framework of the Theory of Planned Behavior to describe the defibrillation beliefs of rural registered nurses. The sites selected for this study were two acute care hospitals in rural Australia (RRMA Classification). Each of these hospitals was in located 'other rural areas' (RRMA Classification) in separate towns and had 25 and 30 beds. The study sample consisted of 10 females and two males. Focus group questions were designed to elicit salient beliefs within the theoretical framework. Three constructs of behavioral, normative and control beliefs guided the development of the question and analysis of the discussions. In accordance with the authors of the theoretical framework, content analysis was used to analyse the data from the study. Two behavioral beliefs, four control beliefs and four normative belief categories were elicited. Two behavioral beliefs categories emerged from the open-ended question: 'What, if any are the advantages of you being able to use a defibrillator?' Participants were congruent when discussing the advantages of nurses initiating defibrillation. The two categories were 'quicker response times' (15 responses) and 'increased success with resuscitation' (8 responses). Participants were asked to identify any events that might influence their decision to use

  14. The Lasioseius phytoseioides species group (Acari: Blattisociidae): new characterisation, description of a new species, complementary notes on seven described species and a taxonomic key for the group.

    Science.gov (United States)

    De Moraes, Gilberto J; Abo-Shnaf, Reham I A; Pérez-Madruga, Yanebis; Sánchez, Leocadia; Karmakar, Krishna; Ho, Chyi-Chen

    2015-06-26

    The Lasioseius phytoseioides species group was first characterised over 50 years ago. Two species of this group, Lasioseius chaudhrii (Wu & Wang) and Lasioseius parberlesei Bhattacharyya, have been considered potentially effective as biological control agents of pest mites of the family Tarsonemidae on rice (Oryza sativa L.) in Asia. A new characterisation of the species group is presented, taking into account a new species here described, Lasioseius piracicabensis Moraes & Pérez-Madruga n. sp., as well as other species mostly described since the first characterisation of the group. The main characteristics of the included species are the reduced number of dorsal idiosomal setae, including the absence of j1 and z1; antiaxial surface of fixed cheliceral digit with a subterminal pointed process; and males with broad lateral expansion of the peritrematic shield in the region between coxae II-III, bearing a pore and a lyrifissure. Complementary notes are presented for Lasioseius annandalei Bhattacharyya & Bhattacharyya, Lasioseius chaudhrii (Wu & Wang), Lasioseius parberlesei Bhattacharyya, L. phytoseioides Chant, Lasioseius punjabensis Bhattacharyya & Sanyal, Lasioseius terrestris Menon & Ghai and Lasioseius youcefi Athias-Henriot. New synonymies are proposed and possible misidentifications in the literature are discussed. A dichotomous key is presented to help the identification of the species of the group, and the distribution of the species is summarised.

  15. Recruitment of racial/ethnic minority older adults through community sites for focus group discussions.

    Science.gov (United States)

    Northridge, Mary E; Shedlin, Michele; Schrimshaw, Eric W; Estrada, Ivette; De La Cruz, Leydis; Peralta, Rogelina; Birdsall, Stacia; Metcalf, Sara S; Chakraborty, Bibhas; Kunzel, Carol

    2017-06-09

    Despite a body of evidence on racial/ethnic minority enrollment and retention in research, literature specifically focused on recruiting racially/ethnically diverse older adults for social science studies is limited. There is a need for more rigorous research on methodological issues and the efficacy of recruitment methods. Cultural obstacles to recruitment of racial/ethnic minority older adults include language barriers, lack of cultural sensitivity of target communities on the part of researchers, and culturally inappropriate assessment tools. Guided by the Consolidated Framework for Implementation Research (CFIR), this study critically appraised the recruitment of racial/ethnic minority older adults for focus groups. The initial approach involved using the physical and social infrastructure of the ElderSmile network, a community-based initiative to promote oral and general health and conduct health screenings in places where older adults gather, to recruit racial/ethnic minority adults for a social science component of an interdisciplinary initiative. The process involved planning a recruitment strategy, engaging the individuals involved in its implementation (opinion leaders in senior centers, program staff as implementation leaders, senior community-based colleagues as champions, and motivated center directors as change agents), executing the recruitment plan, and reflecting on the process of implementation. While the recruitment phase of the study was delayed by 6 months to allow for ongoing recruitment and filling of focus group slots, the flexibility of the recruitment plan, the expertise of the research team members, the perseverance of the recruitment staff, and the cultivation of change agents ultimately resulted in meeting the study targets for enrollment in terms of both numbers of focus group discussions (n = 24) and numbers of participants (n = 194). This study adds to the literature in two important ways. First, we leveraged the social and

  16. Images of Environmental Management: Competing Metaphors in Focus Group Discussions of Swedish Environmental Quality Objectives

    Science.gov (United States)

    Wibeck, Victoria

    2012-04-01

    In managing environmental problems, several countries have chosen the management by objectives (MBO) approach. This paper investigates how focus group participants from the Swedish environmental administration used metaphors to describe the mode of organization needed to attain environmental objectives. Such analysis can shed light on how an MBO system is perceived by actors and how it works in practice. Although the Swedish government intended to stimulate broad-based cooperation among many actors, participants often saw themselves as located at a certain "level," i.e., "higher" or "lower," in the MBO system—that is, their conceptions corresponded to a traditional, hierarchical interpretation of MBO. Prepositions such as "in" and "out" contributed to feelings of inclusion and exclusion on the part of MBO actors. However, horizontal metaphors merged with vertical ones, indicating ongoing competition for the right to interpret how the system of environmental objectives should best be managed. The paper concludes that any organization applying MBO could benefit from discussing alternate ways of talking and thinking about its constituent "levels."

  17. Barriers to asymptomatic screening and other STD services for adolescents and young adults: focus group discussions

    Directory of Open Access Journals (Sweden)

    Leone Peter A

    2004-06-01

    Full Text Available Abstract Background Sexually transmitted diseases (STDs are a major public health problem among young people and can lead to the spread of HIV. Previous studies have primarily addressed barriers to STD care for symptomatic patients. The purpose of our study was to identify perceptions about existing barriers to and ideal services for STDs, especially asymptomatic screening, among young people in a southeastern community. Methods Eight focus group discussions including 53 White, African American, and Latino youth (age 14–24 were conducted. Results Perceived barriers to care included lack of knowledge of STDs and available services, cost, shame associated with seeking services, long clinic waiting times, discrimination, and urethral specimen collection methods. Perceived features of ideal STD services included locations close to familiar places, extended hours, and urine-based screening. Television was perceived as the most effective route of disseminating STD information. Conclusions Further research is warranted to evaluate improving convenience, efficiency, and privacy of existing services; adding urine-based screening and new services closer to neighborhoods; and using mass media to disseminate STD information as strategies to increase STD screening.

  18. [Adaptation of peer evaluation to small group discussion (SGD) and its validity for summative evaluation].

    Science.gov (United States)

    Yasuhara, Tomohisa; Yamaguchi, Takafumi; Sone, Tomomichi; Yanada, Kazuo; Nakamura, Mitsutaka; Kurio, Wasako; Nishikawa, Tomoe; Yamamoto, Yumi; Maeda, Sadaaki

    2012-01-01

    We adopted peer evaluation (mutual evaluation between students) for small group discussion (SGD) among first graders. The peer evaluation criteria were 5 grade scales for 5 fields: "preparation," "remark," "listening," "activeness," and "role." A comparison with tutor evaluation clarified the validity of peer evaluation for summative evaluation. Although the average of peer evaluation (4.2 (4.0-4.4)) was higher than that of tutor evaluation (3.8 (3.7-4.1)) (p=0.0601, Mann-Whitney U test), the value of the correlation coefficient between peer evaluation and summative evaluation of SGD (average 0.35 (0.12-0.54)) was almost the same as that of the coefficient between tutor evaluation and summative evaluation of SGD (average 0.36 (0.24-0.42)) (p=0.6761, Mann-Whitney U test). Principal component analysis showed that the tutor could not evaluate "remark" and "listening" independently, while students evaluate "listening" independently from other evaluation criteria. The combination of peer and tutor evaluation may be multilateral evaluation for SGD. The questionnaire about peer evaluation for students showed that they recognized the value of peer evaluation and favorably accepted its use.

  19. Factors Influencing Iranian Untrained EFL Raters' Rating Group Oral Discussion Tasks: A Mixed Methods Design

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    Nasimeh Nouhi Jadesi

    2016-07-01

    Full Text Available Using a mixed methods design, the present study attempted to identify the factors influencing Iranian untrained EFL raters in rating group oral discussion tasks. To fulfil this aim, 16 language learners of varying proficiency levels were selected and randomly assigned to groups of four and performed a group discussion task. Thirty two untrained raters were also selected based on their volunteer participations. They listened to the audio files of the group discussions and assigned a score of one to six to each language learners based on their own judgments. They also provided comments on each language learners’ performance pointing to why they assigned such scores. The researchers had an interview with the raters after the rating session as well. The quantitative phase investigated whether linguistic features of accuracy, fluency, complexity and amount of talk were attended to by the raters in terms of having any relationship to the scores the raters assigned. Speech rate as an index of fluency and amount of talk turned out to be significantly correlated with the scores. Of more importance was the qualitative phase with the aim of identifying other factors that may account for the scores. The comments provided by the raters on each score and the interviews were codified based on Content Analysis (CA approach. It was found that the raters attend not only to the linguistic features in rating oral group discussions, but they are also sensitive to the interactional features like the roles the participants take in groups tasks and the overall interaction patterns of the groups. The findings of this study may shed light on group oral assessment in terms of training the raters rating group oral tests and developing rating scales specific for group oral assessment. Persian Abstract:پژوهش حاضر، با بهره گیری از روش تحقیق ترکیبی به بررسی عوامل مؤثر بر ارزیابان آموزش ندیده

  20. Investigating the purpose of an online discussion group for health professionals: a case example from forensic occupational therapy.

    Science.gov (United States)

    Dieleman, Crystal; Duncan, Edward A S

    2013-07-03

    Thousands of health-related online discussion groups are active world-wide however, very little is known about the purpose and usefulness of such groups. In 2003 an online discussion group called 'forensic occupational therapy' was established in the United Kingdom. This group was examined to gain an understanding of the purpose and use of online discussion groups for health professionals who may be practically and geographically isolated from others in similar areas of practice. Following a case study design, descriptive characteristics on members' locations and number of posts were collected from the forensic occupational therapy online discussion group. Eight years of posts (2003-2011) were examined using a theoretical thematic analysis process to identify and describe the purposes for which members were using the group. Members from 20 countries contributed to the discussion group; the vast majority of posts being from members in the United Kingdom. Activity within the group was consistently high for the first five years however, activity within the group declined in the final three years. Six purposes for which members use the online discussion group were identified: seeking and giving advice, networking, requesting and sharing material resources, service development, defining the role of occupational therapists, and student learning. Findings suggest that health professionals in specialized and often isolated areas of practice are keen to connect with colleagues and learn from each other's experiences. The main purposes for which the online discussion group was used could be summarized as communication, information sharing and networking; though activity within the group declined significantly during the last three years of the data collection period. This raises questions about the sustainability of online discussion groups within the rapidly developing social media environment.

  1. Investigating the purpose of an online discussion group for health professionals: a case example from forensic occupational therapy

    Science.gov (United States)

    2013-01-01

    Background Thousands of health-related online discussion groups are active world-wide however, very little is known about the purpose and usefulness of such groups. In 2003 an online discussion group called ‘forensic occupational therapy’ was established in the United Kingdom. This group was examined to gain an understanding of the purpose and use of online discussion groups for health professionals who may be practically and geographically isolated from others in similar areas of practice. Methods Following a case study design, descriptive characteristics on members’ locations and number of posts were collected from the forensic occupational therapy online discussion group. Eight years of posts (2003–2011) were examined using a theoretical thematic analysis process to identify and describe the purposes for which members were using the group. Results Members from 20 countries contributed to the discussion group; the vast majority of posts being from members in the United Kingdom. Activity within the group was consistently high for the first five years however, activity within the group declined in the final three years. Six purposes for which members use the online discussion group were identified: seeking and giving advice, networking, requesting and sharing material resources, service development, defining the role of occupational therapists, and student learning. Conclusions Findings suggest that health professionals in specialized and often isolated areas of practice are keen to connect with colleagues and learn from each other’s experiences. The main purposes for which the online discussion group was used could be summarized as communication, information sharing and networking; though activity within the group declined significantly during the last three years of the data collection period. This raises questions about the sustainability of online discussion groups within the rapidly developing social media environment. PMID:23822895

  2. Exploring Reflective Teaching through Informed Journal Keeping and Blog Group Discussion in the Teaching Practicum

    Directory of Open Access Journals (Sweden)

    Insuasty Edgar Alirio

    2010-11-01

    Full Text Available This article reports the findings of a study which examined how student teachers could be empowered as more reflective practitioners through journal keeping and blog group discussions. It was carried out with six student teachers who developed their practicum over six months. Data were collected through journals, blogs, metaphors, conferences and a questionnaire. The results demonstrated that student teachers enriched their perceptions about what reflective teaching implied. Furthermore, journal keeping was approached as an informed process by virtue of which student- teachers could go beyond the descriptive documentation of what happened in their classes. Their journal entries also revealed reflective references, most of which were mainly focused on evaluating teaching, diagnosing and solving problems. Este artículo reporta los resultados de un estudio que examinó cómo se podía potenciar los practicantes como docentes más reflexivos a través del uso de diarios y discusiones mediante blogs. En el estudio participaron seis practicantes, quienes desarrollaron sus prácticas durante seis meses. Los datos se recogieron a través de diarios, blogs, metáforas, conferencias y cuestionarios. Los resultados demostraron que los practicantes enriquecieron sus percepciones acerca de lo que significa la enseñanza reflexiva. Por otra parte, el diligenciamiento del diario, el cual se hizo como un proceso informado, les permitió ir más allá de una etapa descriptiva y enfocarse en la evaluación del proceso de enseñanza, la identificación y solución de los problemas que surgieron en la clase.

  3. Design of IP Camera Access Control Protocol by Utilizing Hierarchical Group Key

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    Jungho Kang

    2015-08-01

    Full Text Available Unlike CCTV, security video surveillance devices, which we have generally known about, IP cameras which are connected to a network either with or without wire, provide monitoring services through a built-in web-server. Due to the fact that IP cameras can use a network such as the Internet, multiple IP cameras can be installed at a long distance and each IP camera can utilize the function of a web server individually. Even though IP cameras have this kind of advantage, it has difficulties in access control management and weakness in user certification, too. Particularly, because the market of IP cameras did not begin to be realized a long while ago, systems which are systematized from the perspective of security have not been built up yet. Additionally, it contains severe weaknesses in terms of access authority to the IP camera web server, certification of users, and certification of IP cameras which are newly installed within a network, etc. This research grouped IP cameras hierarchically to manage them systematically, and provided access control and data confidentiality between groups by utilizing group keys. In addition, IP cameras and users are certified by using PKI-based certification, and weak points of security such as confidentiality and integrity, etc., are improved by encrypting passwords. Thus, this research presents specific protocols of the entire process and proved through experiments that this method can be actually applied.

  4. In-Class Reflective Group Discussion as a Strategy for the Development of Students as Evolving Professionals

    Science.gov (United States)

    Tsang, Annetta Kit Lam

    2011-01-01

    The primary aim of this study was to determine perceptions of three cohorts of third year undergraduate students (n = 65) on in-class reflective group discussion as a critical reflective approach for evolving professionals. Reflective group discussions were embedded into a final year course within the University of Queensland Bachelor of Oral…

  5. Talking while Computing in Groups: The Not-so-Private Functions of Computational Private Speech in Mathematical Discussions

    Science.gov (United States)

    Zahner, William; Moschkovich, Judit

    2010-01-01

    Students often voice computations during group discussions of mathematics problems. Yet, this type of private speech has received little attention from mathematics educators or researchers. In this article, we use excerpts from middle school students' group mathematical discussions to illustrate and describe "computational private…

  6. Talking while Computing in Groups: The Not-so-Private Functions of Computational Private Speech in Mathematical Discussions

    Science.gov (United States)

    Zahner, William; Moschkovich, Judit

    2010-01-01

    Students often voice computations during group discussions of mathematics problems. Yet, this type of private speech has received little attention from mathematics educators or researchers. In this article, we use excerpts from middle school students' group mathematical discussions to illustrate and describe "computational private…

  7. Qualitative assessment of student-teacher communication using focus group discussion in a Dental College in India

    Directory of Open Access Journals (Sweden)

    Mahasweta Joshi

    2016-01-01

    Full Text Available Introduction: The communication between faculty and students is a vital component of optimal facilitation of knowledge and learning. Various factors influence this dynamic. Aim: To assess communication levels between students and teachers in a dental college scenario via focus group discussion. Materials and Methods: The focus group discussion consisted of 10 groups; 5 groups representing the teachers, and 5 groups representing the students. Each group consisted of 6 participants. Hence there were a total of 30 teacher and 30 student participants. Focus group discussion was conducted for each of the groups for 30–45 min duration in the presence of a moderator and a note-taker. Open-ended questions were put across by the moderator to initiate and continue the discussions. The hand-written data taken by the note-taker were transcribed onto a computer on the same day of the discussion. Based on the transcription, domains were created for the student and teacher groups. Results: The issues raised by both the teacher and student groups in this focus group discussion were broadly classified into the following themes: (1 Past versus current scenario, (2 attitudes toward communication and learning, (3 hindrances to effective communication, and (4 potential solutions. Conclusions: Focus group discussion exposed many differences in the perceptions of teachers and students to communication. Each group, however, felt that bridging the teacher-student communication barrier was crucial to improve the teaching-learning experience. Many constructive solutions were provided by both the groups which can help to improve the quality of teaching-learning experience resulting in better quality of education.

  8. Discussion on Mode of Key Link in Increase and Decrease Connection of Urban and Rural Construction Land

    Institute of Scientific and Technical Information of China (English)

    Ai; DENG; Min; JIANG; Qinfang; LI; Xiaoting; XU; Xiaoxia; ZHANG; Hui; JING; Na; ZHANG; Chao; HU

    2013-01-01

    With the methods of qualitative analysis, induction and deduction, modes of key links in increase and decrease connection of urban and rural construction land are proposed in view of the involved three key links, namely reclamation of rural construction land, fund raising and management of connection turnover index, based on the comprehensive analysis of political connotation in increase and decrease of urban and rural construction land. The modes include "village relocation and combination", "hollow village" reconstruction, high-rise stereo, village relocation in the mountain and related capital raising and turnover index management and the applicable regions of various modes are analyzed and studied. The research result provides reference for the reasonable operation of increase and decrease link of urban and rural construction land.

  9. The Influence of Collaborative Group Work on Students' Development of Critical Thinking: The Teacher's Role in Facilitating Group Discussions

    Science.gov (United States)

    Fung, Dennis Chun-Lok; To, Helen; Leung, Kit

    2016-01-01

    The objective of this study was to determine whether the incorporation of group work in a teaching intervention can effectively foster students' critical thinking skills. Building upon Kuhn's critical thinking model, the research involved comparison of pretest and post-test results for 140 secondary four (10th grade) students in Hong Kong on two…

  10. Elaboration during Problem-Based Group Discussion: Effects on Recall for High and Low Ability Students

    Science.gov (United States)

    Van Blankenstein, Floris M.; Dolmans, Diana H. J. M.; Van der Vleuten, Cees P. M.; Schmidt, Henk G.

    2013-01-01

    Although elaboration has been investigated frequently, there is little evidence for the beneficial effect of elaboration in problem-based learning. A controlled experiment tested the effect of elaboration during problem-based discussion on recall. Sixty-seven students observed a video-recorded, problem-based discussion. In one experimental…

  11. Determinants of eating behaviour in university students: a qualitative study using focus group discussions.

    Science.gov (United States)

    Deliens, Tom; Clarys, Peter; De Bourdeaudhuij, Ilse; Deforche, Benedicte

    2014-01-18

    College or university is a critical period regarding unhealthy changes in eating behaviours in students. Therefore, the purpose of this study was to explore which factors influence Belgian (European) university students' eating behaviour, using a qualitative research design. Furthermore, we aimed to collect ideas and recommendations in order to facilitate the development of effective and tailored intervention programs aiming to improve healthy eating behaviours in university students. Using a semi-structured question guide, five focus group discussions have been conducted consisting of 14 male and 21 female university students from a variety of study disciplines, with a mean age of 20.6 ± 1.7 yrs. Using Nvivo9, an inductive thematic approach was used for data analysis. After the transition from secondary school to university, when independency increases, students are continuously challenged to make healthful food choices. Students reported to be influenced by individual factors (e.g. taste preferences, self-discipline, time and convenience), their social networks (e.g. (lack of) parental control, friends and peers), physical environment (e.g. availability and accessibility, appeal and prices of food products), and macro environment (e.g. media and advertising). Furthermore, the relationships between determinants and university students' eating behaviour seemed to be moderated by university characteristics, such as residency, student societies, university lifestyle and exams. Recommendations for university administrators and researchers include providing information and advice to enhance healthy food choices and preparation (e.g. via social media), enhancing self-discipline and self-control, developing time management skills, enhancing social support, and modifying the subjective as well as the objective campus food environment by e.g. making healthy foods price-beneficial and by providing vending machines with more healthy products. This is the first European

  12. Comparison of effect between group discussion and educational booklet on Iranian nursing students' attitude and practice toward patient privacy.

    Science.gov (United States)

    Adib-Hajbaghery, Mohsen; Faraji, Mona

    2016-01-01

    This study aimed to compare the effects between group discussion and educational booklet on nursing students' attitude and practice toward patient privacy in Iran. A two-group, pre-test and post-test design study was conducted in 2015. The study was conducted on 60 nursing students in Kashan, Iran who were randomly allocated into two groups to be trained on patient privacy either through group discussion or by an educational booklet. The students' attitude and practice was assessed before and after the education using a questionnaire and a checklist. Data analysis was performed through paired t-test, Wilcoxon signed ranks test, and independent samples t-tests. Before the intervention, no significant difference was found between the group designated to group discussion and that designated to the educational booklet in the mean overall score of attitude (P=0.303) and practice (P=0.493) toward patient privacy. After the intervention, the mean attitude score significantly increased in the two groups (P=0.001). Moreover, the students' practice score increased in the discussion group while it did not significantly change in the booklet group (P=0.001). Both methods were effective on the students' attitude; however, the educational booklet did not affect their practice toward patient privacy. Group discussion can effectively improve the students' attitude and practice toward patient privacy.

  13. Comparison of effect between group discussion and educational booklet on Iranian nursing students’ attitude and practice toward patient privacy

    Directory of Open Access Journals (Sweden)

    Mohsen Adib-Hajbaghery

    2016-07-01

    Full Text Available Purpose This study aimed to compare the effects between group discussion and educational booklet on nursing students’ attitude and practice toward patient privacy in Iran. Methods A two-group, pre-test and post-test design study was conducted in 2015. The study was conducted on 60 nursing students in Kashan, Iran who were randomly allocated into two groups to be trained on patient privacy either through group discussion or by an educational booklet. The students’ attitude and practice was assessed before and after the education using a questionnaire and a checklist. Data analysis was performed through paired t-test, Wilcoxon signed ranks test, and independent samples t-tests. Results Before the intervention, no significant difference was found between the group designated to group discussion and that designated to the educational booklet in the mean overall score of attitude (P=0.303 and practice (P=0.493 toward patient privacy. After the intervention, the mean attitude score significantly increased in the two groups (P=0.001. Moreover, the students’ practice score increased in the discussion group while it did not significantly change in the booklet group (P=0.001. Conclusion Both methods were effective on the students’ attitude; however, the educational booklet did not affect their practice toward patient privacy. Group discussion can effectively improve the students’ attitude and practice toward patient privacy.

  14. Group assessment of key indicators of sustainable waste management in developing countries.

    Science.gov (United States)

    Tot, Bojana; Vujić, Goran; Srđević, Zorica; Ubavin, Dejan; Russo, Mário Augusto Tavares

    2017-09-01

    Decision makers in developing countries are struggling to solve the present problems of solid waste management. Prioritisation and ranking of the most important indicators that influence the waste management system is very useful for any decision maker for the future planning and implementation of a sustainable waste management system. The aim of this study is to evaluate key indicators and their related sub-indicators in a group decision-making environment. In order to gain insight into the subject it was necessary to obtain the qualified opinions of decision makers from different countries who understand the situation in the sector of waste management in developing countries. An assessment is performed by 43 decision makers from both developed and developing countries, and the applied methodology is based on a combined use of the analytic hierarchy process, from the multi-criteria decision-making set of tools, and the preferential voting method known as Borda Count, which belongs to social choice theory. Pairwise comparison of indicators is performed with the analytic hierarchy process, and the ranking of indicators once obtained is assessed with Borda Count. Detailed analysis of the final results showed that the Institutional-Administrative indicator was the most important one, with the maximum weight as derived by both groups of decision makers. The results also showed that the combined use of the analytic hierarchy process and Borda Count contributes to the credibility and objectivity of the decision-making process, allowing its use in more complex waste management group decision-making problems to be recommended.

  15. A standardized approach to qualitative content analysis of focus group discussions from different countries.

    NARCIS (Netherlands)

    Moretti, F.; Vliet, L. van; Bensing, J.; Deledda, G.; Mazzi, M.; Rimondini, M.; Zimmermann, C.; Fletcher, I.

    2011-01-01

    OBJECTIVE: To describe the methodological procedures of a multi-centre focus group research for obtaining content categories also suitable for categorical statistical analyses. METHODS: Inductive content analyses were performed on a subsample of 27 focus groups conducted in three different countries

  16. A standardized approach to qualitative content analysis of focus group discussions from different countries.

    NARCIS (Netherlands)

    Moretti, F.; Vliet, L. van; Bensing, J.; Deledda, G.; Mazzi, M.; Rimondini, M.; Zimmermann, C.; Fletcher, I.

    2011-01-01

    OBJECTIVE: To describe the methodological procedures of a multi-centre focus group research for obtaining content categories also suitable for categorical statistical analyses. METHODS: Inductive content analyses were performed on a subsample of 27 focus groups conducted in three different countries

  17. Sex, Pregnancy and Contraception: A Report of Focus Group Discussions with Adolescents.

    Science.gov (United States)

    Sugland, Barbara W.; Wilder, Kathleen J.; Chandra, Anita

    Findings in this report summarize the first phase of a larger, multi-year study that is combining qualitative and quantitative methods to outline a conceptual framework to guide future demographic/fertility research, pregnancy prevention programs and policies. Twelve focus groups--involving a multiculturally representative group of male and female…

  18. A More Efficient Group Key Distribution Scheme for Wireless Ad hoc Networks

    Institute of Scientific and Technical Information of China (English)

    LI Hui; CHEN Ke-fei; WEN Mi; ZHENG Yan-fei

    2008-01-01

    As the wireless medium is characterized by its lossy nature, reliable communication cannot be as-sumed in the key management scheme. Therefore self-healing is a good property for key distribution scheme in wireless applications. A new self-healing key distribution scheme was proposed, which is optimal in terms of user memory storage and efficient in terms of communication complexity.

  19. Comparative study of problem based learning versus structured group discussion in teaching pharmacology

    Directory of Open Access Journals (Sweden)

    Laveesh M. R.

    2016-10-01

    Conclusions: PBL and SGD are effective small group methods for teaching undergraduate medical students. However learning outcome with PBL is better than SGD. [Int J Basic Clin Pharmacol 2016; 5(5.000: 1877-1880

  20. The critical value of focus group discussions in research with women living with HIV in Malawi.

    Science.gov (United States)

    Mkandawire-Valhmu, Lucy; Stevens, Patricia E

    2010-05-01

    This article is based on a critical ethnography about HIV and gender-based issues of power and violence conducted in Malawi in 2008. In all, 72 women living with HIV were recruited from four antiretroviral treatment clinics, three rural and one urban, to participate in 12 focus groups. Informed by a postcolonial feminist perspective, we analyze the process and products of these focus groups to interrogate their capacity to facilitate collective engagement with the social and structural realities confronting women in a resource-limited, highly AIDS-affected country. We present exemplars to show how women together created collective narratives to mobilize individuals to action. Findings indicate that focus groups can be used innovatively to benefit both the research and the participants, not only as a critical method of inquiry with marginalized groups but also as a forum in which validating dialogue, mutual support, and exchange of strategic information can generate transformative change to improve women's lives.

  1. Facilitating dental student reflections: using mentor groups to discuss clinical experiences and personal development

    OpenAIRE

    Koole, Sebastiaan; Christiaens, Véronique; Cosyn, Jan; De Bruyn, Hugo

    2016-01-01

    Despite the consensus on the importance of reflection for dental professionals, a lack of understanding remains about how students and clinicians should develop their ability to reflect. The aim of this study was to investigate dental students’ and mentors’ perceptions of mentor groups as an instructional method to facilitate students’ reflection in terms of the strategy’s learning potential, role of the mentor, group dynamics, and feasibility. At Ghent University in Belgium, third- and fourt...

  2. [A discussion on setting up target age group for immunization against leptospirosis].

    Science.gov (United States)

    Zhuo, J T; Wang, S S; Lan, W L

    1995-08-01

    This paper presented the lesson of setting up a false immunization priority age group for leptospirosis which failed to prevent the leptospirosis outbreak. Our experience was that in the rice paddy field type endemic area the priority age group for the vaccination against leptopirosis should be 15 to 34 year olds followed by 35 years old or above. There was no preventive effect in the vaccination for the children 14 years old or yaunger, to our observation.

  3. Using Facebook Groups to Encourage Science Discussions in a Large-Enrollment Biology Class

    Science.gov (United States)

    Pai, Aditi; McGinnis, Gene; Bryant, Dana; Cole, Megan; Kovacs, Jennifer; Stovall, Kyndra; Lee, Mark

    2017-01-01

    This case study reports the instructional development, impact, and lessons learned regarding the use of Facebook as an educational tool within a large enrollment Biology class at Spelman College (Atlanta, GA). We describe the use of this social networking site to (a) engage students in active scientific discussions, (b) build community within the…

  4. Students' Evaluation of Google Hangouts through a Cross-Cultural Group Discussion Activity

    Science.gov (United States)

    Kobayashi, Michiko

    2015-01-01

    The study investigated perceived ease of use and usefulness of Google Hangouts as an instructional/learning tool. Forty-two teacher education students at U.S and Japanese universities participated in an online cross-cultural activity using Google Hangouts and discussed cultural differences between the two countries and their teaching philosophies.…

  5. Children's Behaviors and Emotions in Small-Group Argumentative Discussion: Explore the Influence of Big Five Personality Factors

    Science.gov (United States)

    Dong, Ting

    2009-01-01

    The assessment and structure of personality traits and small group learning during classroom discussions are both research fields that have undergone fast development in the past few decades. However, very few studies have investigated the relationship between individual personality characteristics and performance in discussions, especially with…

  6. Effectiveness of interactive discussion group in suicide risk assessment among general nurses in Taiwan: a randomized controlled trial.

    Science.gov (United States)

    Wu, Chia-Yi; Lin, Yi-Yin; Yeh, Mei Chang; Huang, Lian-Hua; Chen, Shaw-Ji; Liao, Shih-Cheng; Lee, Ming-Been

    2014-11-01

    The evidence of suicide prevention training for nurses is scarce. Strategies to enhance general nurses' ability in suicide risk assessment are critical to develop effective training programs in general medical settings. This study was aimed to examine the effectiveness of an interactive discussion group in a suicide prevention training program for general nurses. In this randomized study with two groups of pre-post study design, the sample was recruited from the Medical, Surgical, and Emergency/Intensive Care Sectors of a 2000-bed general hospital via stratified randomization. Among the 111 nurses, 57 participants randomly assigned to the control group received a two-hour baseline suicide gatekeeper lecture, and 54 participants assigning to the experimental group received an additional five-hour group discussion about suicide risk assessment skills. Using a case vignette, the nurses discussed and assessed suicide risk factors specified in a 10-item Chinese SAD PERSONS Scale during a group discussion intervention. The findings revealed that the nurses achieved significant and consistent improvements of risk identification and assessment after the intervention without influencing their mental health status for assessing suicide risks. The result suggested an effective approach of interactive group discussion for facilitating critical thinking and learning suicide risk assessment skills among general nurses. Copyright © 2014 Elsevier Ltd. All rights reserved.

  7. An illustrated key to adult males of neotropical Fannia Robineau-Desvoidy belonging to pusio sub-group (Diptera, Fanniidae).

    Science.gov (United States)

    Couri, M S

    2005-11-01

    The 11 neotropical species of Fannia belonging to the pusio sub-group (canicularis group), are keyed F. dodgei Seago; F. femoralis (Stein); F. pamplonae Couri & Araújo; F. parafemoralis Araújo & Couri; F. paraisensis Araújo & Couri; F. punctivervis Malloch; F. pusio (Wiedemann); F. sabroskyi Seago; F. snyderi Seago; F. trimaculata (Stein); F. trimaculatoides Couri & Pamplona. The key is addressed only to the males and the illustrations help in the visualization of the characters.

  8. Cultural Ways of Constructing Knowledge: The Role of Identities in Online Group Discussions

    Science.gov (United States)

    Öztok, Murat

    2016-01-01

    Learning scientists and the CSCL community have argued that knowledge construction is a process of collective thinking; a process that is simultaneously personal and social that requires group cognition. However, while CSCL researchers have investigated situated knowledge in the process of collective thinking, little work has been done to fully…

  9. Social Influence in Online Health Discussions: An Evaluation of Online Graduate Student Support Groups

    Science.gov (United States)

    Maloney, Erin Kay

    2010-01-01

    This paper reports on the results of a field experimental design assessing online support groups testing hypotheses derived from the social identification model of deindividuation effects (SIDE; Lea & Spears, 1992) and social information processing theory (SIP; Walther, 1992). Specifically, it is predicted that individuals in an online support…

  10. An Annotated Bibliography of Materials Designed and Organized for Adult Use in Discussion Groups.

    Science.gov (United States)

    Ellison, John W.

    This first annotated bibliography of materials designed and organized for adult use in disucssion groups includes both book and nonbook material. Areas dealt with are: art, censorship, change, child guidance, communication, crime, democracy, economics, education, evolution, food, foreign affairs, forgetting, generation gap, gold, good and evil,…

  11. Cultural Ways of Constructing Knowledge: The Role of Identities in Online Group Discussions

    Science.gov (United States)

    Öztok, Murat

    2016-01-01

    Learning scientists and the CSCL community have argued that knowledge construction is a process of collective thinking; a process that is simultaneously personal and social that requires group cognition. However, while CSCL researchers have investigated situated knowledge in the process of collective thinking, little work has been done to fully…

  12. Making Foundational Assumptions Transparent: Framing the Discussion about Group Communication and Influence

    Science.gov (United States)

    Meyers, Renee A.; Seibold, David R.

    2009-01-01

    In this article, the authors seek to augment Dean Hewes's (1986, 1996) intriguing bracketing and admirable larger effort to "return to basic theorizing in the study of group communication" by making transparent the foundational, and debatable, assumptions that underlie those models. Although these assumptions are addressed indirectly by Hewes, the…

  13. Making Meaning with Friends: Exploring the Function, Direction and Tone of Small Group Discussions of Literature in Elementary School Classrooms

    Science.gov (United States)

    Peterson, Katie

    2016-01-01

    The merits of decentralized small groups has been questioned in literature and by practicing teachers; thus this study shows the academic and identity work children do as they attempt to make meaning in these spaces. This study explores the affordances and drawbacks of decentralized small group discussion contexts in a multiage (3rd/4th) grade…

  14. Examining the Impact of Novel Pre-activity Tasks on Macroskills: The Case of Group Discussion on Writing Ability

    Directory of Open Access Journals (Sweden)

    Hooshang Khoshsima

    2016-02-01

    Full Text Available The main concern of most researchers in the field of second and foreign language teaching is lessening the problems and eliminating the hinders on the way of learning a language. Writing is considered as one of the most challenging and complicated tasks for learners to perform particularly when they have to write in a second or foreign language. Numerous studies were done on the importance of the pre-writing stage and activities which are directly and indirectly related to the theme of the writing. Accordingly, the main aim of this study was to examine the effects of group discussion as a pre- activity task on writing ability. To this aim, 27 Iranian EFL learners, who were at the same level –intermediate- studying at Shokuh and Safir Institutes, Birjand, Iran were chosen randomly. Two groups- one control and one experimental group- were studied. In control group the conventional method was used in teaching writing, while in experimental group, group discussion pre-activity task was administered. After 16 sessions, the obtained data of the pretests and posttests was analyzed by SPSS software. According to the results, researcher strongly concluded that group discussion has no significant effect on writing ability of Iranian intermediate learners. This study can help teachers and syllabus designers in choosing and applying an effective pre-activity task. Keywords: writing ability, pre-activity task, group discussion, EFL learners

  15. Phases and Changes: Using I Ching as a Source of Generative Metaphors in Teaching Small Group Discussion.

    Science.gov (United States)

    Holt, G. Richard; Chang, Hui-Ching

    1992-01-01

    This essay describes the use of I Ching hexagrams as a focus to improve the ability of college student groups to evolve creative solutions and improve decision-making skills. The philosophy of I Ching is briefly explained, and examples are given of hexagram interpretations which are applicable to group discussion and problem solving. (DB)

  16. Technicians or patient advocates?--still a valid question (results of focus group discussions with pharmacists)

    DEFF Research Database (Denmark)

    Almarsdóttir, Anna Birna; Morgall, Janine Marie

    1999-01-01

    discussions with community pharmacists in the capital area Reykjavík and rural areas were employed to answer the research question: How has the pharmacists' societal role evolved after the legislation and what are the implications for pharmacy practice? The results showed firstly that the public image......, the results showed that the pharmacists have difficulties reconciling their technical paradigm with a legislative and professional will specifying customer and patient focus. This study describes the challenges of a new legislation with a market focus for community pharmacists whose education emphasized...... technical skills. This account of the changes in the drug distribution system in Iceland highlights some of the implications for pharmacists internationally....

  17. Technicians or patient advocates?--still a valid question (results of focus group discussions with pharmacists)

    DEFF Research Database (Denmark)

    Almarsdóttir, Anna Birna; Morgall, Janine Marie

    1999-01-01

    New legislation went into effect in Iceland in March 1996 making it the first Nordic country to liberate their drug distribution system. The term liberalization implies the abolishment of the professional monopoly in that ownership was not tied to the pharmacy profession anymore. Focus group disc...... technical skills. This account of the changes in the drug distribution system in Iceland highlights some of the implications for pharmacists internationally....

  18. Responses of Aquatic Bacteria to Terrestrial Runoff: Effects on Community Structure and Key Taxonomic Groups

    Science.gov (United States)

    Le, Huong T.; Ho, Cuong T.; Trinh, Quan H.; Trinh, Duc A.; Luu, Minh T. N.; Tran, Hai S.; Orange, Didier; Janeau, Jean L.; Merroune, Asmaa; Rochelle-Newall, Emma; Pommier, Thomas

    2016-01-01

    Organic fertilizer application is often touted as an economical and effective method to increase soil fertility. However, this amendment may increase dissolved organic carbon (DOC) runoff into downstream aquatic ecosystems and may consequently alter aquatic microbial community. We focused on understanding the effects of DOC runoff from soils amended with compost, vermicompost, or biochar on the aquatic microbial community of a tropical reservoir. Runoff collected from a series of rainfall simulations on soils amended with different organic fertilizers was incubated for 16 days in a series of 200 L mesocosms filled with water from a downstream reservoir. We applied 454 high throughput pyrosequencing for bacterial 16S rRNA genes to analyze microbial communities. After 16 days of incubation, the richness and evenness of the microbial communities present decreased in the mesocosms amended with any organic fertilizers, except for the evenness in the mesocosms amended with compost runoff. In contrast, they increased in the reservoir water control and soil-only amended mesocosms. Community structure was mainly affected by pH and DOC concentration. Compared to the autochthonous organic carbon produced during primary production, the addition of allochthonous DOC from these organic amendments seemed to exert a stronger effect on the communities over the period of incubation. While the Proteobacteria and Actinobacteria classes were positively associated with higher DOC concentration, the number of sequences representing key bacterial groups differed between mesocosms particularly between the biochar runoff addition and the compost or vermi-compost runoff additions. The genera of Propionibacterium spp. and Methylobacterium spp. were highly abundant in the compost runoff additions suggesting that they may represent sentinel species of complex organic carbon inputs. Overall, this work further underlines the importance of studying the off-site impacts of organic fertilizers as

  19. Effectiveness of group discussions and commitment in improving cleaning behaviour of shared sanitation users in Kampala, Uganda slums.

    Science.gov (United States)

    Tumwebaze, Innocent K; Mosler, Hans-Joachim

    2015-12-01

    Access to and use of hygienic shared sanitation facilities is fundamental in reducing the high risk of diseases such as diarrhoea and respiratory infections. We evaluated the effectiveness of group discussions and commitment in improving the cleaning behaviour of shared sanitation users in three urban slums in Kampala, Uganda. The study follows the risk, attitudes, norms, abilities and self-regulation (RANAS) model of behaviour change and some factors of the social dilemma theory. A pre-versus post-intervention survey was conducted in three slums of Kampala, Uganda, between December 2012 and September 2013. From the pre-intervention findings, users of dirty sanitation facilities were randomly assigned to discussions, discussions + commitment and control interventions. The interventions were implemented for 3 months with the aim of improving cleaning behaviour. This paper provides an analysis of 119 respondents who belonged to the intervention discussion-only (n = 38), discussions + commitment (n = 41) and the control (no intervention, n = 40) groups. Compared to the control, discussions and discussions + commitment significantly improved shared toilet users' cleaning behaviour. The rate of improvement was observed through behavioural determinants such as cleaning obligation, cleaning ease, cleaning approval and affective beliefs. Our study findings show that group discussions and commitment interventions derived from RANAS model of behaviour change are effective in improving the shared sanitation users' cleaning behaviour. Copyright © 2015 Elsevier Ltd. All rights reserved.

  20. Technicians or patient advocates?--still a valid question (results of focus group discussions with pharmacists)

    DEFF Research Database (Denmark)

    Almarsdóttir, A B; Morgall, J M

    1999-01-01

    New legislation went into effect in Iceland in March 1996 making it the first Nordic country to liberate their drug distribution system. The term liberalization implies the abolishment of the professional monopoly in that ownership was not tied to the pharmacy profession anymore. Focus group...... and the self-image of the pharmacist has changed in the short time since the legislative change. The pharmacists generally said that their patient contact is deteriorating due to the discount wars, the rural pharmacists being more optimistic, and believing in a future competition based on quality. Secondly...

  1. Effects of an additional small group discussion to cognitive achievement and retention in basic principles of bioethics teaching methods

    Directory of Open Access Journals (Sweden)

    Dedi Afandi

    2009-03-01

    Full Text Available Aim The place of ethics in undergraduate medical curricula is essential but the methods of teaching medical ethics did not show substantial changes. “Basic principles of bioethics” is the best knowledge to develop student’s reasoning analysis in medical ethics In this study, we investigate the effects of an additional small group discussion in basic principles of bioethics conventional lecture methods to cognitive achievement and retention. This study was a randomized controlled trial with parallel design. Cognitive scores of the basic principles of bioethics as a parameter was measured using basic principles of bioethics (Kaidah Dasar Bioetika, KDB test. Both groups were attending conventional lectures, then the intervention group got an additional small group discussion.Result Conventional lectures with or without small group discussion significantly increased cognitive achievement of basic principles of bioethics (P= 0.001 and P= 0.000, respectively, and there were significant differences in cognitive achievement and retention between the 2 groups (P= 0.000 and P= 0.000, respectively.Conclusion Additional small group discussion method improved cognitive achievement and retention of basic principles of bioethics. (Med J Indones 2009; 18: 48-52Keywords: lecture, specification checklist, multiple choice questions

  2. Students’ Evaluation of Google Hangouts Through A Cross-Cultural Group Discussion Activity

    Directory of Open Access Journals (Sweden)

    Michiko KOBAYASHI

    2015-04-01

    Full Text Available The study investigated perceived ease of use and usefulness of Google Hangouts as an instructional/learning tool. Forty-two teacher education students at U.S and Japanese universities participated in an online cross-cultural activity using Google Hangouts and discussed cultural differences between the two countries and their teaching philosophies. After the activity, students responded to a survey to evaluate the ease of use and usefulness of Google Hangouts. Qualitative data were also collected through the survey to examine their overall learning experience. The results indicated that Google Hangouts is a useful instructional tool, but not easy to use. Although technical problems occurred during the conference, the activity provided valuable experiences for both U.S. and Japanese students. The study provides suggestions for how Google Hangouts can be integrated into online classrooms based on the findings.

  3. Hydroxyl groups in nonmetamict chevkinite-(Ce):a crystal chemical discussion

    Institute of Scientific and Technical Information of China (English)

    YANG Zhuming; Franz Pertlik; Michel Fleck

    2008-01-01

    The minerals of chevkinite group were commonly considered to be anhydrous minerals. The infrared absorption spectrum of natural nonmetamict chevkinite-(Ce) from the aegirine-alkali granite, Mianning, Sichuan Province, China, exhibited two broad peaks in the 3600-2800 cm-1 region owing to the OH stretching. The corresponding H2O content required for the charge balance in formula was 1.27%. The O-H ··· O bond lengths maight cover from 0.2658 to 0.2794 nm by the correlated OH stretching energies. An electrostatic charge balance for chevkinite-(Ce) based on the assigned site-population from chemical data was calculated without the hydrogen contribution. The resulting empirical bond-valence sum on O6, O8, O2, O3, O5, and O4 ranged from 1.73 to 1.95 vu. The partial substitution of O by OH may occur in four atom sites: O6, O2, O4, and O5. The small differences in the bond-valence sums between the supposed donors and acceptors may mean a mixed donor/acceptor role of the involved oxygen atoms. The IR spectral features between 3394 and 3035 cm-1 consisted of various hydrous species at different structural sites and orientations. The OH groups in the chevkinite-(Ce) appeared to be involved in local charge imbalance in the structure and to be present when the mineral crystallized hydrothermally.

  4. Discussion on Group Learning%浅谈小组合作学习

    Institute of Scientific and Technical Information of China (English)

    杨艳萍

    2014-01-01

    Cooperative learning is widely used in many countries in the world a kind of creative teaching theory and strategy. Refers to two or more than twostudents or groups,in order to achieve a common purpose in action are matched with each other.%合作学习是目前世界上许多国家普遍采用的一种富有创意的教学理论与方略,是指两个或两个以上的学生或群体,为了达到共同的目的而在行动上相互配合的过程。

  5. Renormalization group invariance and optimal QCD renormalization scale-setting: a key issues review.

    Science.gov (United States)

    Wu, Xing-Gang; Ma, Yang; Wang, Sheng-Quan; Fu, Hai-Bing; Ma, Hong-Hao; Brodsky, Stanley J; Mojaza, Matin

    2015-12-01

    A valid prediction for a physical observable from quantum field theory should be independent of the choice of renormalization scheme--this is the primary requirement of renormalization group invariance (RGI). Satisfying scheme invariance is a challenging problem for perturbative QCD (pQCD), since a truncated perturbation series does not automatically satisfy the requirements of the renormalization group. In a previous review, we provided a general introduction to the various scale setting approaches suggested in the literature. As a step forward, in the present review, we present a discussion in depth of two well-established scale-setting methods based on RGI. One is the 'principle of maximum conformality' (PMC) in which the terms associated with the β-function are absorbed into the scale of the running coupling at each perturbative order; its predictions are scheme and scale independent at every finite order. The other approach is the 'principle of minimum sensitivity' (PMS), which is based on local RGI; the PMS approach determines the optimal renormalization scale by requiring the slope of the approximant of an observable to vanish. In this paper, we present a detailed comparison of the PMC and PMS procedures by analyzing two physical observables R(e+e-) and [Formula: see text] up to four-loop order in pQCD. At the four-loop level, the PMC and PMS predictions for both observables agree within small errors with those of conventional scale setting assuming a physically-motivated scale, and each prediction shows small scale dependences. However, the convergence of the pQCD series at high orders, behaves quite differently: the PMC displays the best pQCD convergence since it eliminates divergent renormalon terms; in contrast, the convergence of the PMS prediction is questionable, often even worse than the conventional prediction based on an arbitrary guess for the renormalization scale. PMC predictions also have the property that any residual dependence on the choice

  6. Media Memories in Focus Group Discussions - Methodological Reflections Instancing the Global Media Generations Project

    Directory of Open Access Journals (Sweden)

    Theo Hug

    2010-06-01

    Full Text Available Medienereignisse wie auch die Einführung und Verbreitung neuer Medientechnologien und Formate bringen mannigfaltige Wege des „Eintretens von Medien ins Leben“ mit sich. Im Projekt Globale Mediengenerationen (GMG wurden Medienerinnerungen aus der Kindheit im Kontext von Gruppendiskussionen am Beispiel dreier Generationen aus verschiedenen Ländern aller Kontinente untersucht. Dabei wurden medienbezogene Wissensbestände von drei Alterskohorten globaler Generationen analysiert. Der Artikel diskutiert methodologische Aspekte des Projekts und komplexe und selektive Prozesse des Erinnerns vergangener Ereignisse. Er untersucht Gemeinsamkeiten und Unterschiede des GMG-Ansatzes mit dem dokumentarischen Ansatz von Ralf Bohnsack, die beide in der Wissenssoziologie von Karl Mannheim verwurzelt sind. Darüber hinaus wird Medialität als basale methodologische Kategorie in Erwägung gezogen, nicht nur im Hinblick auf die Klärung begrifflicher Grundlagen, sondern auch als inhärente Dimension von Forschungsprozessen. Media events in general and the introduction and divulgence of new media technologies and formats in particular implicate various (new ways of “media entering life.” In the Global Media Generations (GMG research project, articulation of individuals’ memories of childhood experiences with the media was afforded by context of focus groups of three generations in different countries of six continents. In this project media related knowledge segments of different age cohorts have been analyzed and interpreted. The article deals with methodological questions of the project and complex processes of ‘remembering’ past events. It explores commonalities and differences of the GMG approach with Ralf Bohnsack’s documentary approach, both rooted in the sociology of knowledge of Karl Mannheim. Furthermore, mediality is taken into consideration as a basic methodological category, which means that it is perceived not only as subject matter to

  7. Provably-Secure Authenticated Group Diffie-Hellman KeyExchange

    Energy Technology Data Exchange (ETDEWEB)

    Bresson, Emmanuel; Chevassut, Olivier; Pointcheval, David

    2007-01-01

    Authenticated key exchange protocols allow two participantsA and B, communicating over a public network and each holding anauthentication means, to exchange a shared secret value. Methods designedto deal with this cryptographic problem ensure A (resp. B) that no otherparticipants aside from B (resp. A) can learn any information about theagreed value, and often also ensure A and B that their respective partnerhas actually computed this value. A natural extension to thiscryptographic method is to consider a pool of participants exchanging ashared secret value and to provide a formal treatment for it. Startingfrom the famous 2-party Diffie-Hellman (DH) key exchange protocol, andfrom its authenticated variants, security experts have extended it to themulti-party setting for over a decade and completed a formal analysis inthe framework of modern cryptography in the past few years. The presentpaper synthesizes this body of work on the provably-secure authenticatedgroup DH key exchange.

  8. Perspectives on Positioning, Interaction, and Learning in Small-Group Discussion: Possibilities for Extending the Analytic Lens

    Science.gov (United States)

    Kittleson, Julie M.; Wilson, Rachel E.

    2014-01-01

    In this forum piece, we respond to Karin Due's study of social dynamics in groups of students in physics class and gender issues that play out in this context. We discuss two threads that appear in Due's paper: one pertains to patterns of talk within groups and how these patterns open up possibilities for learning, the other pertains to…

  9. Social networks and cooperation in electronic communities : a theoretical-empirical analysis of academic communication and Internet discussion groups

    NARCIS (Netherlands)

    Matzat, Uwe

    2001-01-01

    The study examines the use of academic e-mailing lists and newsgroups on the Internet by university researchers in the Netherlands and England. Their use is related to three clusters of problems that are analyzed. Firstly, while there are considerable time costs for using Internet Discussion Groups,

  10. Social networks and cooperation in electronic communities : a theoretical-empirical analysis of academic communication and Internet discussion groups

    NARCIS (Netherlands)

    Matzat, Uwe

    2001-01-01

    The study examines the use of academic e-mailing lists and newsgroups on the Internet by university researchers in the Netherlands and England. Their use is related to three clusters of problems that are analyzed. Firstly, while there are considerable time costs for using Internet Discussion Groups,

  11. Structuring Asynchronous Discussion Groups: Comparing Scripting by Assigning Roles with Regulation by Cross-Age Peer Tutors

    Science.gov (United States)

    De Wever, Bram; Van Keer, Hilde; Schellens, Tammy; Valcke, Martin

    2010-01-01

    The present study focuses on comparing the impact of role assignment and cross-age peer tutors on students' level of knowledge construction in 15 asynchronous discussion groups of nine students each in a first-year university course (N=135). Content analysis was applied to analyse the level of knowledge construction in students' online postings.…

  12. Video Modeling of Cooperative Discussion Group Behaviors with Students with Learning Disabilities in a Secondary Content-area Classroom

    Science.gov (United States)

    O'Brien, Chris; Wood, Charles L.

    2011-01-01

    Peer-mediated instructional strategies such as cooperative learning are commonly used in general education classrooms in secondary schools; however, students with disabilities often lack the group interaction and discussion skills necessary to fully benefit from evidence-based interventions. The present study used a multiple baseline across…

  13. Qualitative Inquiry into Church-Based Assets for HIV/AIDS Prevention and Control: A Forum Focus Group Discussion Approach

    Science.gov (United States)

    Aja, Godwin N.; Modeste, Naomi N.; Montgomery, Susanne B.

    2012-01-01

    Assets church members believed they needed to engage in effective HIV/AIDS prevention and control activities. We used the three-step forum focus group discussion (FFGD) methodology to elicit responses from 32 church leaders and lay members, representing five denominations in Aba, Nigeria. Concrete resources, health expertise, finances,…

  14. Structuring Asynchronous Discussion Groups: Comparing Scripting by Assigning Roles with Regulation by Cross-Age Peer Tutors

    Science.gov (United States)

    De Wever, Bram; Van Keer, Hilde; Schellens, Tammy; Valcke, Martin

    2010-01-01

    The present study focuses on comparing the impact of role assignment and cross-age peer tutors on students' level of knowledge construction in 15 asynchronous discussion groups of nine students each in a first-year university course (N=135). Content analysis was applied to analyse the level of knowledge construction in students' online postings.…

  15. Bilingual asynchronous online discussion groups: design and delivery of an eLearning distance study module for nurse academics in a developing country.

    Science.gov (United States)

    Lewis, Peter A; Mai, Van Anh Thi; Gray, Genevieve

    2012-04-01

    The advent of eLearning has seen online discussion forums widely used in both undergraduate and postgraduate nursing education. This paper reports an Australian university experience of design, delivery and redevelopment of a distance education module developed for Vietnamese nurse academics. The teaching experience of Vietnamese nurse academics is mixed and frequently limited. It was decided that the distance module should attempt to utilise the experience of senior Vietnamese nurse academics - asynchronous online discussion groups were used to facilitate this. Online discussion occurred in both Vietnamese and English and was moderated by an Australian academic working alongside a Vietnamese translator. This paper will discuss the design of an online learning environment for foreign correspondents, the resources and translation required to maximise the success of asynchronous online discussion groups, as well as the rationale of delivering complex content in a foreign language. While specifically addressing the first iteration of the first distance module designed, this paper will also address subsequent changes made for the second iteration of the module and comment on their success. While a translator is clearly a key component of success, the elements of simplicity and clarity combined with supportive online moderation must not be overlooked.

  16. Educational Outcomes of Small-Group Discussion Versus Traditional Lecture Format in Dental Students' Learning and Skills Acquisition.

    Science.gov (United States)

    Arias, Ana; Scott, Raymond; Peters, Ove A; McClain, Elizabeth; Gluskin, Alan H

    2016-04-01

    The aim of this prospective quantitative study was to compare the effect of different instructional formats on dental students' skills and knowledge acquisition for access cavity preparation. All first-year dental students were invited to participate in this study conducted during the four consecutive two-week endodontic rotation courses at the University of the Pacific Arthur A. Dugoni School of Dentistry in spring semester 2015. Four alphabetically distributed intact groups of students were randomly allocated to two groups (n=70 each) that participated in either small-group discussion or a traditional lecture on access preparation. The first outcome measure was skill acquisition, measured by the quality of access cavities prepared in extracted teeth at the conclusion of the session. Two blinded raters scored direct observations on a continuous scale. Knowledge, the second outcome measure, was scored with a multiple-choice and open-ended question test at the end of each two-week session. Data were obtained for 134 of the 140 students, for a 96% response rate. The results showed that students in the small-group discussion groups scored significantly higher than those in the lecture groups when skill performance was tested (p=8.9 × 10(-7)). However, no significant differences were found in the acquisition of knowledge between the two groups on the written test. Active student participation was significantly related to improved manual skill acquisition, but the format of the session does not seem to have had a direct influence on acquired knowledge.

  17. Using standardized patient with immediate feedback and group discussion to teach interpersonal and communication skills to advanced practice nursing students.

    Science.gov (United States)

    Lin, Esther Ching-Lan; Chen, Shiah-Lian; Chao, Shu-Yuan; Chen, Yueh-Chih

    2013-06-01

    Interpersonal and communication skills (IPCS) are essential for advanced practice nursing (APN) in our increasingly complex healthcare system. The Standardized Patient (SP) is a promising innovative pedagogy in medical and healthcare education; however, its effectiveness for teaching IPCS to graduate nursing students remains unclear. We examined the effectiveness of using SP with SP feedback and group discussion to teach IPCS in graduate nursing education. Randomized-controlled study. First-year APN students in Taiwan. Participants were randomly assigned to the experimental (SP assessments with SP feedback and group discussion) or control (SP assessments only) group. There were two outcome indicators: IPCS and student learning satisfaction (SLS). The IPCS were assessed before and after the study in interviews with the SPs. SLS was measured when the study ended. All participants expressed high SLS (94.44%) and showed significant (p ≤ 0.025) improvements on IPCS total scores, interviewing, and counseling. However, there were no significant differences between groups. Qualitative feedback from encounters with SPs is described. Using SPs to teach IPCS to APN students produced a high SLS. The students learned and significantly improved their IPCS by interviewing SPs, but future studies are needed to confirm the effectiveness of SP feedback and group discussions. Copyright © 2012 Elsevier Ltd. All rights reserved.

  18. Comparison the Effect of Student-Based Group Discussion and Lecture Methods Teaching on Midwifery Student\\'s Learning Level

    Directory of Open Access Journals (Sweden)

    Aghapour SA.

    2015-12-01

    Full Text Available Aims: True learning needs the utilization of proper teaching methods leading to students’ interests in the learning activities to gain useful learning experiences. Therefore, it is needed to reform the traditional teaching methods and to use new student-focused methods by the educational systems.  The aim of this study was to compare the effects of the student-focused group discussion method and lecture method on the learning level in the Midwifery students. Materials & Methods: In the semi-experimental study, 72 third-semester Midwifery bachelor students of Islamic Azad University, Gorgan Branch, were selected via census method to participate in the theoretical clinical pregnancy course presented as lecture and group discussion methods in 2014. The final test was done after the end of the training courses. And, material durability test was done 8 weeks after the end of the course sessions. Data was analyzed, using SPSS 16 software and Wilcoxon Non-parametric Test. Findings: There was a significant difference between the mean scores of all the sessions conducted through lecture method (45.00±8.00 and group discussion method (57.00±10.00; p=0.0001. There was a significant difference in the material durability after 8 weeks between the mean scores of lecture (24.50±13.90 and group discussion (35.10±13.10 methods (p=0.0001. Conclusion: Standard student-focused group discussion training affects the midwifery students’ learning more than the lecture method does and there is higher information durability.  

  19. Who is the competent physics student? A study of students' positions and social interaction in small-group discussions

    Science.gov (United States)

    Due, Karin

    2014-06-01

    This article describes a study which explored the social interaction and the reproduction and challenge of gendered discourses in small group discussions in physics. Data for the study consisted of video recordings of eight upper secondary school groups solving physics problems and 15 audiotaped individual interviews with participating students. The analysis was based on gender theory viewing gender both as a process and a discourse. Specifically discursive psychology analysis was used to examine how students position themselves and their peers within discourses of physics and gender. The results of the study reveal how images of physics and of "skilled physics student" were constructed in the context of the interviews. These discourses were reconstructed in the students' discussions and their social interactions within groups. Traditional gendered positions were reconstructed, for example with boys positioned as more competent in physics than girls. These positions were however also resisted and challenged.

  20. From Loose Groups to Effective Teams: The Nine Key Factors of the Team Landscape.

    Science.gov (United States)

    Sheard, A. G.; Kakabadse, A. P.

    2002-01-01

    A loose group of individuals working on a task differs from an effective team on nine factors: clearly defined goals, priorities, roles and responsibilities, self-awareness, leadership, group dynamics, communications, content, and infrastructure. Ways to eliminate barriers and speed formation of effective teams could be based on those factors.…

  1. Group A PP2Cs evolved in land plants as key regulators of intrinsic desiccation tolerance.

    Science.gov (United States)

    Komatsu, Kenji; Suzuki, Norihiro; Kuwamura, Mayuri; Nishikawa, Yuri; Nakatani, Mao; Ohtawa, Hitomi; Takezawa, Daisuke; Seki, Motoaki; Tanaka, Maho; Taji, Teruaki; Hayashi, Takahisa; Sakata, Yoichi

    2013-01-01

    Vegetative desiccation tolerance is common in bryophytes, although this character has been lost in most vascular plants. The moss Physcomitrella patens survives complete desiccation if treated with abscisic acid (ABA). Group A protein phosphatases type 2C (PP2C) are negative regulators of abscisic acid signalling. Here we show that the elimination of Group A PP2C is sufficient to ensure P. patens survival to full desiccation, without ABA treatment, although its growth is severely hindered. Microarray analysis shows that the Group A PP2C-regulated genes exclusively overlap with genes exhibiting a high level of ABA induction. Group A PP2C disruption weakly affects ABA-activated kinase activity, indicating Group A PP2C action downstream of these kinases in the moss. We propose that Group A PP2C emerged in land plants to repress desiccation tolerance mechanisms, possibly facilitating plants propagation on land, whereas ABA releases the intrinsic desiccation tolerance from Group A PP2C regulation.

  2. Anaphothrips genus-group: key to world genera, with two new species and three new records from Japan (Thysanoptera, Thripidae).

    Science.gov (United States)

    Masumoto, Masami; Okajima, Shûji

    2017-05-29

    An identification key is provided to the 40 genera worldwide that comprise the Anaphothrips genus-group of Thripinae. Oxythrips japonicus sp.n. and Rubiothrips galii sp.n. are described from Japan, and the members of Anaphothrips genus-group from Japan are reviewed, with 15 species in eight genera. Anaphothrips swezeyi Moulton, Caprithrips insularis Beshear and C. melanophthalmus (Bagnall) are newly recorded from Japan.

  3. nPAKE+:A Tree-Based Group Password-Authenticated Key Exchange Protocol Using Different Passwords

    Institute of Scientific and Technical Information of China (English)

    Zhi-guo Wan; Robert H. Deng; Feng Bao; Bart Preneel; Ming Gu

    2009-01-01

    Although two-party password-authenticated key exchange (PAKE) protocols have been intensively studied in recent years, group PAKE protocols have received little attention. In this paper, we propose a tree-based group PAKE protocol -- nPAKE+ protocol under the setting where each party shares an independent password with a trusted server. The nPAKE+ protocol is a novel combination of the hierarchical key tree structure and the password-based Diffie-Hellman exchange, and hence it achieves substantial gain in computation efficiency. In particular, the computation cost for each client in our protocol is only O(log n). Additionally, the hierarchical feature of nPAKE+ enables every subgroup to obtain its own subgroup key in the end. We also prove the security of our protocol under the random oracle model and the ideal cipher model.

  4. Luminescence Dating Work From The Heidelberg Group: A Key Technology In Geoarchaeology

    Science.gov (United States)

    Wagner, G. A.; Kadereit, A.

    Geoarchaeology is a growing discipline in archaeological science. It aims at the natural environment as context of past human societies and at the interaction between both, the environment and man as part of a joint ecosystem. This topic is also of considerable concern of present societies. Like other historic sciences, geoarchaeology requires accurate chronologies. Since one deals in geoarchaeology predominantly with sediments and rocks, luminescence methods play a key role. This is demonstrated in two case studies from Phlious in southern Greece and Nasca in southern Peru. The results show clearly climatically triggered social developments and feedbacks to the environment.

  5. Key environmental challenges for food groups and regions representing the variation within the EU, Ch.3 Salmon Aquaculture Supply Chain

    DEFF Research Database (Denmark)

    G., Ólafsdóttir; Andrade, Grace Patricia Viera; Nielsen, Thorkild

    2013-01-01

    The report is aimed to give a thorough review of different environmental impacts that the food and drink sector are producing along the whole chain, from fork to farm and to assess which of them are the key environmental challenges for Europe. A representative range of product groups have been...

  6. Virtual communities, research groups and projects on IMS Learning Design. State of the art, key factors and forthcoming challenges

    NARCIS (Netherlands)

    Burgos, Daniel; Koper, Rob

    2005-01-01

    Burgos, D., Koper, R. (2005) Virtual communities, research groups and projects on IMS Learning Design. State of the art, key factors and forthcoming challenges. In E-Journal of Educational Research, Assessment and Evaluation, vol. 11, issue 2 [www.uv.es/RELIEVE]. Available at [http://www.uv.es/

  7. Descriptions of three new carbonaria-group species of Fannia Robineau-Desvoidy from China, with a key to the carbonaria-group species (Diptera, Fanniidae)

    Science.gov (United States)

    Wang, Ming-fu; Li, Wei; Zhao, Yu-wan; Wu, Jie; Zhang, Dong

    2017-01-01

    Abstract A historical review of the Fannia carbonaria-group is provided and three new species are described from China: Fannia fani Wang & Wu, sp. n., Fannia nitidiventris Wang & Zhang, sp. n. and Fannia submaculata Wang & Zhao, sp. n.. One species, Fannia norvegica Ringdahl, 1934, is recorded for the first time from China. Illustrations of male terminalia of these four species and a taxonomic key to the males of known species in the group are given. The Fannia carbonaria-group now includes 30 species distributed in the Holarctic Region and northern part of the Oriental Region. PMID:28331411

  8. Fit Minded College Edition Pilot Study: Can a Magazine-Based Discussion Group Improve Physical Activity in Female College Freshmen?

    Science.gov (United States)

    Pellitteri, Katelyn; Huberty, Jennifer; Ehlers, Diane; Bruening, Meg

    Initial efficacy of a magazine-based discussion group for improving physical activity (PA), self-worth, and eating behaviors in female college freshmen. Randomized control trial. A large university in southwestern United States. Thirty-seven female college freshmen were randomized to the intervention (n = 17) and control groups (n = 20) in September 2013. Participants completed an 8-week magazine-based discussion group program, Fit Minded College Edition, adapted from Fit Minded, a previously tested theory-based intervention. Education on PA, self-worth, and nutrition was provided using excerpts from women's health magazines. Participants also had access to a Web site with supplementary health and wellness material. The control group did not attend meetings or have access to the Web site but received the magazines. Interventions focusing on concepts of self-worth with less focus on weight and appearance may promote long term PA participation and healthy eating behaviors in college women. Self-reported PA, global self-worth, knowledge self-worth, self-efficacy, social support, eating behaviors (ie, fruit/veggie/junk food/sugar-sweetened beverage consumption), satisfaction, and Web site usage. Mean age of participants was 18.11 (SD = 0.32) years. Time × Intervention effects were observed for PA minutes per week (Partial η = 0.34), knowledge self-worth (Partial η = 0.02), and daily sugar-sweetened beverage consumption (Partial η = 0.17) (P < .05), with the intervention group reporting greater increases in PA and knowledge self-worth and greater decreases in sugar-sweetened beverage consumption. A magazine-based discussion group may provide a promising platform to improve health behaviors in female college freshmen.

  9. Research on Key Techniques of Condition Monitoring and Fault Diagnosing Systems of Machine Groups

    Institute of Scientific and Technical Information of China (English)

    WANG Yan-kai; LIAO Ming-fu; WANG Si-ji

    2005-01-01

    This paper describes the development of the condition monitoring and fault diagnosing system of a group of rotating machinery. The data management is performed by means of double redundant data bases stored simultaneously in both the analyzing server and monitoring client. In this way, high reliability of the storage of data is guaranteed. Condensation of trend data releases much space resource of the hard disk. Diagnosing strategies orientated to different typical faults of rotating machinery are developed and incorporated into the system. Experimental verification shows that the system is suitable and effective for condition monitoring and fault diagnosing for a rotating machine group.

  10. A Group Based Key Sharing and Management Algorithm for Vehicular Ad Hoc Networks

    Directory of Open Access Journals (Sweden)

    Zeeshan Shafi Khan

    2014-01-01

    Full Text Available Vehicular ad hoc networks (VANETs are one special type of ad hoc networks that involves vehicles on roads. Typically like ad hoc networks, broadcast approach is used for data dissemination. Blind broadcast to each and every node results in exchange of useless and irrelevant messages and hence creates an overhead. Unicasting is not preferred in ad-hoc networks due to the dynamic topology and the resource requirements as compared to broadcasting. Simple broadcasting techniques create several problems on privacy, disturbance, and resource utilization. In this paper, we propose media mixing algorithm to decide what information should be provided to each user and how to provide such information. Results obtained through simulation show that fewer number of keys are needed to share compared to simple broadcasting. Privacy is also enhanced through this approach.

  11. Does a research group increase impact on the scientific community or general public discussion? Alternative metric-based evaluation.

    Science.gov (United States)

    De Gregori, Manuela; Scotti, Valeria; De Silvestri, Annalisa; Curti, Moreno; Fanelli, Guido; Allegri, Massimo; Schatman, Michael E

    2016-01-01

    In this study, we investigated the impact of scientific publications of the Italian SIMPAR (Study In Multidisciplinary PAin Research) group by using altmetrics, defined as nontraditional metrics constituting an alternative to more traditional citation-impact metrics, such as impact factor and H-index. By correlating traditional and alternative metrics, we attempted to verify whether publications by the SIMPAR group collectively had more impact than those performed by its individual members, either in solo publications or in publications coauthored by non-SIMPAR group investigators (which for the purpose of this study we will refer to as "individual publications"). For all the 12 members of the group analyzed (pain therapists, biologists, and pharmacologists), we created Open Researcher and Contributor ID and Impact Story accounts, and synchronized these data. Manually, we calculated the level metrics for each article by dividing the data obtained from the research community by those obtained from the public community. We analyzed 759 articles, 18 of which were published by the SIMPAR group. Altmetrics demonstrated that SIMPAR group publications were more likely to be saved (77.8% vs 45.9%), discussed (61.1% vs 1.1%, Paltmetrics in estimating the value of the research products of a group.

  12. Promoting Group Work at Key Stage 3: Solving an Attitudinal Crisis among Young Adolescents?

    Science.gov (United States)

    Pell, Tony; Galton, Maurice; Steward, Susan; Page, Charlotte; Hargreaves, Linda

    2007-01-01

    The attitudes and behaviour of 1040 pupils aged 12-14 years have been measured at the beginning and end of the school year with a battery of attitude, motivation and personality tests in an investigation of the differential effects of group work compared to whole-class learning. A total of 44 secondary teachers of English, mathematics and science…

  13. Mutual Assistance Associations: Refugee Self-Help Groups Play Key Role.

    Science.gov (United States)

    Ranard, Donald A.

    1990-01-01

    The history and current status of Indochinese Mutual Assistance Programs (MAAs) is reviewed in the newsletter issue, and a description is provided of the six kinds of MAAs that are found in the United States. They include the following: (1) cultural preservation/social activities; (2) religious services; (3) special constituency groups; (4)…

  14. Rowlandius dumitrescoae species group: new diagnosis, key and description of new cave-dwelling species from Brazil (Schizomida, Hubbardiidae)

    Science.gov (United States)

    Giupponi, Alessandro Ponce de Leão; de Miranda, Gustavo Silva; Villarreal, Osvaldo M.

    2016-01-01

    Abstract The Rowlandius dumitrescoae species group is reviewed and rediagnosed, and its composition is revised. The group now includes Rowlandius cousinensis, Rowlandius decui, Rowlandius dumitrescoae, Rowlandius insignis, Rowlandius linsduarte, Rowlandius monensis, Rowlandius peckorum, Rowlandius potiguar, Rowlandius sul, Rowlandius ubajara, and Rowlandius pedrosoi sp. n. A new species is described from a cave in northeast Brazil (Santa Quitéria, Ceará). Identification keys and distributional maps are provided for the species of the group. Sixteen species of Schizomida, including five of Rowlandius, are currently recognized from Brazil. PMID:27920601

  15. Modelling the exposure of wildlife to radiation: key findings and activities of IAEA working groups

    Energy Technology Data Exchange (ETDEWEB)

    Beresford, Nicholas A. [NERC Centre for Ecology and Hydrology, Lancaster Environment Center, Library Av., Bailrigg, Lancaster, LA1 4AP (United Kingdom); School of Environment and Life Sciences, University of Salford, Manchester, M4 4WT (United Kingdom); Vives i Batlle, Jordi; Vandenhove, Hildegarde [Belgian Nuclear Research Centre, Belgian Nuclear Research Centre, Boeretang 200, 2400 Mol (Belgium); Beaugelin-Seiller, Karine [Institut de Radioprotection et de Surete Nucleaire (IRSN), PRP-ENV, SERIS, LM2E, Cadarache (France); Johansen, Mathew P. [ANSTO Australian Nuclear Science and Technology Organisation, New Illawarra Rd, Menai, NSW (Australia); Goulet, Richard [Canadian Nuclear Safety Commission, Environmental Risk Assessment Division, 280 Slater, Ottawa, K1A0H3 (Canada); Wood, Michael D. [School of Environment and Life Sciences, University of Salford, Manchester, M4 4WT (United Kingdom); Ruedig, Elizabeth [Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins (United States); Stark, Karolina; Bradshaw, Clare [Department of Ecology, Environment and Plant Sciences, Stockholm University, SE-10691 (Sweden); Andersson, Pal [Swedish Radiation Safety Authority, SE-171 16, Stockholm (Sweden); Copplestone, David [Biological and Environmental Sciences, University of Stirling, Stirling, FK9 4LA (United Kingdom); Yankovich, Tamara L.; Fesenko, Sergey [International Atomic Energy Agency, Vienna International Centre, 1400, Vienna (Austria)

    2014-07-01

    In total, participants from 14 countries, representing 19 organisations, actively participated in the model application/inter-comparison activities of the IAEA's EMRAS II programme Biota Modelling Group. A range of models/approaches were used by participants (e.g. the ERICA Tool, RESRAD-BIOTA, the ICRP Framework). The agreed objectives of the group were: 'To improve Member State's capabilities for protection of the environment by comparing and validating models being used, or developed, for biota dose assessment (that may be used) as part of the regulatory process of licensing and compliance monitoring of authorised releases of radionuclides.' The activities of the group, the findings of which will be described, included: - An assessment of the predicted unweighted absorbed dose rates for 74 radionuclides estimated by 10 approaches for five of the ICRPs Reference Animal and Plant geometries assuming 1 Bq per unit organism or media. - Modelling the effect of heterogeneous distributions of radionuclides in sediment profiles on the estimated exposure of organisms. - Model prediction - field data comparisons for freshwater ecosystems in a uranium mining area and a number of wetland environments. - An evaluation of the application of available models to a scenario considering radioactive waste buried in shallow trenches. - Estimating the contribution of {sup 235}U to dose rates in freshwater environments. - Evaluation of the factors contributing to variation in modelling results. The work of the group continues within the framework of the IAEA's MODARIA programme, which was initiated in 2012. The work plan of the MODARIA working group has largely been defined by the findings of the previous EMRAS programme. On-going activities of the working group, which will be described, include the development of a database of dynamic parameters for wildlife dose assessment and exercises involving modelling the exposure of organisms in the marine coastal

  16. Perceptions and efficiency of short-term medical aid missions among key groups of health professionals.

    Science.gov (United States)

    Chiu, Ya-Wen; Weng, Yi-Hao; Chen, Chih-Fu; Yang, Chun-Yuh; Lee, Ming-Liang

    2014-09-01

    This study investigated the perceptions of short-term assignments of medical services among participating health care professionals dispatched from Taiwan to underdeveloped areas. Structured questionnaires were mailed to four groups of professionals (physicians, pharmacists, nurses, and public health personnel) who had participated in any of 88 medical missions dispatched to 24 allied nations. A total of 278 returns were valid for analysis. Among them, 222 respondents reported that they had participated in just one overseas medical mission (79.9%). The majority of physicians, pharmacists, and nurses listed humanitarianism as their foremost incentive for participation. In contrast, public health personnel most frequently reported that they had been assigned to the mission abroad. Pharmacists, nurses, and public health personnel most commonly stated that their top goal was health care; but physicians said that aiding Taiwan's diplomatic relations was their main motive. While all groups generally recognized language proficiency and cultural awareness as important for conducting successful short-term medical aid missions (STMMs), many members of groups did not rate their own capabilities in those area as sufficient, especially pharmacists (p help inform efforts to integrate evidence into the deployment of STMMs.

  17. Gay-Straight Alliances as settings to discuss health topics: individual and group factors associated with substance use, mental health, and sexual health discussions.

    Science.gov (United States)

    Poteat, V P; Heck, N C; Yoshikawa, H; Calzo, J P

    2017-06-01

    Sexual minority (e.g. lesbian, gay, bisexual, questioning; LGBQ) and gender minority (e.g. transgender) youth experience myriad health risks. Gay-Straight Alliances (GSAs) are school-based settings where they may have opportunities to discuss substance use, mental health, and sexual health issues in ways that are safe and tailored to their experiences. Attention to these topics in GSAs could aid in developing programming for these settings. Among 295 youth from 33 Massachusetts high-school GSAs (69% LGBQ, 68% cisgender female, 68% White, Mage = 16.06), we examined how often youth discussed these topics within their GSA and identified factors associated with having more of these discussions. Youth and GSAs as a whole varied in their frequency of discussing these topics. Youth who accessed more information/resources in the GSA and did more advocacy more frequently engaged in discussions around substance use, mental health and sexual health. Youth who reported greater victimization more often discussed substance use and mental health, but not sexual health. Finally, GSAs whose members collectively reported greater victimization more frequently discussed these topics. These findings can assist the development of health programming to be delivered within GSAs. © The Author 2017. Published by Oxford University Press. All rights reserved. For permissions, please email: journals.permissions@oup.com.

  18. Uruguayan secondary school students speak up about tobacco: results from focus group discussions in and around Montevideo.

    Science.gov (United States)

    Peterson, Erin; Harrell, Melissa; Springer, Andrew; Medina, José; Martinez, Lucía; Perry, Cheryl; Estol, Diego

    2017-07-01

    This qualitative research study investigated intrapersonal, interpersonal, and environmental factors that shape young adolescent tobacco use behaviors in Uruguay. Focus groups were conducted in the summer of 2012 and fall of 2013 in four secondary schools in Montevideo, Uruguay, including two private schools and two public schools. A total of four focus groups were led in each school, composed of 4-6 students each, 16 focus groups in total. Data analysis utilized NVivo software and included deductive and inductive content analysis. Overwhelmingly, students reported that the onset of smoking occurred in the second year of secondary school. The primary intrapersonal factors that were found to be universal among respondents identified that smoking was a performance in groups, to garner attention from their peers. Students interviewed most often stated that the greatest interpersonal factors for smoking were to look older, as a rite of passage, and for group membership. Environmental factors cited most often indicate that they smoked during unsupervised time, either at night or around the short Uruguayan school day. Focus group interviews revealed that adolescents had easy access to cigarettes for purchase through small family owned grocery stores, even though laws exist preventing the sale of cigarettes to minors. Few differences were cited between strata related to cigarette use in adolescents. The differences that do exist are most apparent across gender, though there were a few observed differences when stratified by public and private school. Findings from this study indicate that key factors across ecological levels (intrapersonal, interpersonal, and environmental) should be taken into consideration when designing tobacco prevention programs for youth in Uruguay. A multiple-component approach which addresses risk factors at all of these levels, implemented in schools, may be particularly well-suited to this setting.

  19. Exponential Arithmetic Based Self-Healing Group Key Distribution Scheme with Backward Secrecy under the Resource-Constrained Wireless Networks.

    Science.gov (United States)

    Guo, Hua; Zheng, Yandong; Zhang, Xiyong; Li, Zhoujun

    2016-04-28

    In resource-constrained wireless networks, resources such as storage space and communication bandwidth are limited. To guarantee secure communication in resource-constrained wireless networks, group keys should be distributed to users. The self-healing group key distribution (SGKD) scheme is a promising cryptographic tool, which can be used to distribute and update the group key for the secure group communication over unreliable wireless networks. Among all known SGKD schemes, exponential arithmetic based SGKD (E-SGKD) schemes reduce the storage overhead to constant, thus is suitable for the the resource-constrained wireless networks. In this paper, we provide a new mechanism to achieve E-SGKD schemes with backward secrecy. We first propose a basic E-SGKD scheme based on a known polynomial-based SGKD, where it has optimal storage overhead while having no backward secrecy. To obtain the backward secrecy and reduce the communication overhead, we introduce a novel approach for message broadcasting and self-healing. Compared with other E-SGKD schemes, our new E-SGKD scheme has the optimal storage overhead, high communication efficiency and satisfactory security. The simulation results in Zigbee-based networks show that the proposed scheme is suitable for the resource-restrained wireless networks. Finally, we show the application of our proposed scheme.

  20. Exponential Arithmetic Based Self-Healing Group Key Distribution Scheme with Backward Secrecy under the Resource-Constrained Wireless Networks

    Directory of Open Access Journals (Sweden)

    Hua Guo

    2016-04-01

    Full Text Available In resource-constrained wireless networks, resources such as storage space and communication bandwidth are limited. To guarantee secure communication in resource-constrained wireless networks, group keys should be distributed to users. The self-healing group key distribution (SGKD scheme is a promising cryptographic tool, which can be used to distribute and update the group key for the secure group communication over unreliable wireless networks. Among all known SGKD schemes, exponential arithmetic based SGKD (E-SGKD schemes reduce the storage overhead to constant, thus is suitable for the the resource-constrained wireless networks. In this paper, we provide a new mechanism to achieve E-SGKD schemes with backward secrecy. We first propose a basic E-SGKD scheme based on a known polynomial-based SGKD, where it has optimal storage overhead while having no backward secrecy. To obtain the backward secrecy and reduce the communication overhead, we introduce a novel approach for message broadcasting and self-healing. Compared with other E-SGKD schemes, our new E-SGKD scheme has the optimal storage overhead, high communication efficiency and satisfactory security. The simulation results in Zigbee-based networks show that the proposed scheme is suitable for the resource-restrained wireless networks. Finally, we show the application of our proposed scheme.

  1. Selective traditions in group discussions: teachers' views about good science and the possible obstacles when encountering a new topic

    Science.gov (United States)

    Lundqvist, Eva; Sund, Per

    2016-11-01

    There is an ongoing discussion about what content that should be taught in science education and there are different views among teachers about what represent good science content. However, teachers are not isolated individuals making their own interpretations, but are part of institutionalised systems building on patterns in the selection of teaching goals and content. Earlier research shows that teachers teach in alignment with different selective traditions, which can be understood as well-developed teaching habits. Individual teachers seem to develop their personal habits on the basis of the contextual situations created by earlier generations of teachers. In order to find out which content teachers find representative for science education, we asked nine teachers to take part in group interviews to talk about what they value as "good" science content. The participants were grouped according to their selective traditions expressed in earlier studies. The method was used to dynamically explore, challenge and highlight teachers' views. The starting point for the group discussions is national tests in science. In Sweden, national tests in biology, physics and chemistry were introduced in secondary school science (year 9) in 2009. One overarching aim of these tests is to support the implementation of the science curricula and to include for example knowledge about socio-scientific issues (SSI). The content of the tests can consequently be seen as important for teachers to consider. The findings show that `resistance' to including SSI is not just an issue for individual teachers. As individuals teachers can create many kinds of obstacles, but still be interested in integrating SSI in their science teaching. However, in group discussions the teachers tend to collectively adopt the scientific rational discourse. This discourse is what joins them and creates their common identity as science teachers. In turn, they seek to free scientific knowledge from social knowledge

  2. Randomized controlled trial of group cognitive behavioral therapy compared to a discussion group for co-morbid anxiety and depression in older adults.

    Science.gov (United States)

    Wuthrich, V M; Rapee, R M; Kangas, M; Perini, S

    2016-03-01

    Co-morbid anxiety and depression in older adults is associated with worse physical and mental health outcomes and poorer response to psychological and pharmacological treatments in older adults. However, there is a paucity of research focused on testing the efficacy of the co-morbid treatment of anxiety and depression in older adults using psychological interventions. Accordingly, the primary objective of the current study was to test the effects of a group cognitive behavior therapy (CBT) program in treating co-morbid anxiety and depression in a sample of older age adults. A total of 133 community-dwelling participants aged ⩾60 years (mean age = 67.35, s.d. = 5.44, male = 59) with both an anxiety disorder and unipolar mood disorder, as assessed on the Anxiety Disorder Interview Schedule (ADIS), were randomly allocated to an 11-week CBT group or discussion group. Participants with Mini-Mental State Examination scores group × time interaction effects emerged at post-treatment only for diagnostic severity of the primary disorder, mean severity of all anxiety disorders, mood disorders, and all disorders, and recovery rates on primary disorder. Group CBT produced faster and sustained improvements in anxiety and depression on diagnostic severity and recovery rates compared to an active control in older adults.

  3. 小组讨论及研讨会总结%Summary of Working Group Discussion and the Seminar

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    This composition collects the discussion conclusions of each group during the seminar.Each group discussion has a topic,and each group sends an expert giving a speech in the summary meeting to report the outcome of the discussion.All of the outcomes put forward the direction and methods in the development of industrialised housing in Chongqing,and also set up a basis for the work of the next stage of this project.%文章汇集了研讨会小组讨论的各组总结,每小组有一个论题,并由一名相关专家在讨论总结会上发言,报告本小组的讨论成果。这些讨论成果指出了在重庆开展住宅产业化的方向和途径,为项目下一步工作的开展奠定了良好的基础。此外,还包括研讨会的总结,提出了重庆实施住宅产业化的具体意见。

  4. EFEKTIVITAS METODE BUZZ GROUP DISCUSSION UNTUK MENINGKATKAN PERILAKU PEMBERANTASAN SARANG NYAMUK IBU-IBU PKK KELURAHAN SRAGEN TENGAH

    Directory of Open Access Journals (Sweden)

    Ulfah Nuristia

    2014-03-01

    Full Text Available Demam Berdarah Dengue (DBD adalah penyakit menular yang berbahaya yang dapat menimbulkan kematian dalam waktu singkat dan sering menimbulkan wabah serta kepanikan masyarakat. Pemberian informasi tentang pemberantasan sarang nyamuk (PSN dengan metode Buzz Group Discussion diharapkan dapat meningkatkan pengetahuan dan merubah perilaku masyarakat menjadi lebih baik yang diharapkan dapat dilakukan oleh kader PKK sehingga dapat ditularkan kepada masyarakat lain. Jenis penelitian ini bersifat Quasi eksperimental. Subjek dalam penelitian ini terdiri dari 2 kelompok yaitu kelompok eksperimen sebanyak 18 orang diberi metode buzz group disscussion dan kelompok kontrol sebanyak 18 orang diberi metode ceramah. Hasil uji perbedaan posttest perilaku antara kelompok eksperimen dan kelompok kontrol didapatkan dengan p value sebesar 0,000 lebih kecil dari 0,05 dan diperoleh nilai rata-rata post test kelompok sebesar 6,555 sedangkan pada kelompok kontrol diperoleh hasil post test dengan rata-rata sebesar  4,27, lebih kecil dari rata-rata posttesteksperimen. Berdasarkan hasil penelitian dapat disimpulkan bahwa metode Buzz Group Discussion efektif dalam meningkatkan perilaku pemberantasan sarang nyamuk pada Ibu PKK di kelurahan Sragen Tengah, Kabupaten Sragen

  5. Does a research group increase impact on the scientific community or general public discussion? Alternative metric-based evaluation

    Directory of Open Access Journals (Sweden)

    De Gregori M

    2016-06-01

    Full Text Available Manuela De Gregori,1-3,* Valeria Scotti,4,* Annalisa De Silvestri,4 Moreno Curti,4 Guido Fanelli,2,5,6 Massimo Allegri,2,5,6 Michael E Schatman,2,7 1Pain Therapy Service, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy; 2Study In Multidisciplinary PAin Research Group, Parma, Italy; 3Young Against Pain Group, Parma, Italy; 4Center for Scientific Documentation and Biometry Unit, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy; 5Anesthesia, Critical Care, and Pain Medicine, Department of Surgical Sciences, University of Parma, Italy; 6Anesthesia, Intensive Care and Pain Therapy Service, Azienda Ospedaliero, Universitaria di Parma, Parma, Italy; 7US Pain Foundation, Bellevue, WA, USA *These authors contributed equally to this work. Abstract: In this study, we investigated the impact of scientific publications of the Italian SIMPAR (Study In Multidisciplinary PAin Research group by using altmetrics, defined as nontraditional metrics constituting an alternative to more traditional citation-impact metrics, such as impact factor and H-index. By correlating traditional and alternative metrics, we attempted to verify whether publications by the SIMPAR group collectively had more impact than those performed by its individual members, either in solo publications or in publications coauthored by non-SIMPAR group investigators (which for the purpose of this study we will refer to as “individual publications”. For all the 12 members of the group analyzed (pain therapists, biologists, and pharmacologists, we created Open Researcher and Contributor ID and Impact Story accounts, and synchronized these data. Manually, we calculated the level metrics for each article by dividing the data obtained from the research community by those obtained from the public community. We analyzed 759 articles, 18 of which were published by the SIMPAR group. Altmetrics demonstrated that SIMPAR group publications were more likely to be saved (77.8% vs 45.9%, discussed

  6. 机载战术激光武器关键技术探讨%Airborne Tactical Laser Weapon Key Techniques Discussion

    Institute of Scientific and Technical Information of China (English)

    刘毅

    2011-01-01

    阐述了机栽战术激光武器的特点、组成及作战流程,并对美国先进战术激光武器(ATLW)做了介绍;对与机载战术激光武器系统相关的高能激光器、精密伺服跟踪、光束控制等关键技术进行了分析。%This paper discusses airborne tactical laser weapon (ATLW) 's features, constitution and battle process, and briefly presents American advanced tactical laser weapon, analyzes the key techniques associated with ATLW, such as high energy laser, fine servo tracking and beam control.

  7. Discussion on the Key Points in Lesson Preparation of"Basic Accounting"%谈中职“基础会计”的备课重点

    Institute of Scientific and Technical Information of China (English)

    江丽云

    2013-01-01

      “基础会计”是会计专业的一门基础课程,集理论性和技术性于一体,在会计专业课中起着至关重要的作用。本文主要论述了中职“基础会计”这门课程的备课重点,力求提高中职“基础会计”的教学质量。%The"Basic Accounting"is a basic course for account-ing majors, and it plays an important role in accounting courses, as it integrates theories and skills. This paper mainly discusses the key points in lesson preparation of secondary vocational"Ba-sic Accounting", aiming to improve the teaching quality of sec-ondary vocational"Basic Accounting".

  8. Discussion of key process on the technology of apple vinegar production%苹果醋生产工艺关键工序探讨

    Institute of Scientific and Technical Information of China (English)

    李晓楼; 杨丽华

    2012-01-01

    简述苹果醋生产的液体酿制法和固体发酵法,以苹果和大米为原料,阐述果米共酵生产苹果醋工艺的各工序,并针对关键工序果米混汁的配合比、发酵初始总糖度的选择进行实验探讨分析,提出各工序的操作要求和要点,总结苹果醋的感官质量标准,为苹果醋的生产提供参考.%This article described the production of apple vinegar liquid and solid fermentation brewing method.Using apples and rice as raw materials,the each process on the technology of apple vinegar by fruit-grain mixtures fermentation was discussed,and experiments were made on key processes of the mixture ratio of fruit-rice mixed juice and the initial total sugar fermentation degree.The operation requirement and key points were proposed,and the apple vinegar quality standard was summed up,providing reference for the production of apple vinegar.

  9. Editorial research and the publication process in biomedicine and health: Report from the Esteve Foundation Discussion Group, December 2012.

    Science.gov (United States)

    Marušić, Ana; Malički, Mario; von Elm, Erik

    2014-01-01

    Despite the fact that there are more than twenty thousand biomedical journals in the world, research into the work of editors and publication process in biomedical and health care journals is rare. In December 2012, the Esteve Foundation, a non-profit scientific institution that fosters progress in pharmacotherapy by means of scientific communication and discussion organized a discussion group of 7 editors and/or experts in peer review biomedical publishing. They presented findings of past editorial research, discussed the lack of competitive funding schemes and specialized journals for dissemination of editorial research, and reported on the great diversity of misconduct and conflict of interest policies, as well as adherence to reporting guidelines. Furthermore, they reported on the reluctance of editors to investigate allegations of misconduct or increase the level of data sharing in health research. In the end, they concluded that if editors are to remain gatekeepers of scientific knowledge they should reaffirm their focus on the integrity of the scientific record and completeness of the data they publish. Additionally, more research should be undertaken to understand why many journals are not adhering to editorial standards, and what obstacles editors face when engaging in editorial research.

  10. 'Will I be able to have a baby?' Results from online focus group discussions with childhood cancer survivors in Sweden.

    Science.gov (United States)

    Nilsson, J; Jervaeus, A; Lampic, C; Eriksson, L E; Widmark, C; Armuand, G M; Malmros, J; Marshall Heyman, M; Wettergren, L

    2014-12-01

    What do adolescent and young adult survivors of childhood cancer think about the risk of being infertile? The potential infertility, as well as the experience of having had cancer, affects well-being, intimate relationships and the desire to have children in the future. Many childhood cancer survivors want to have children and worry about possible infertility. For this qualitative study with a cross-sectional design, data were collected through 39 online focus group discussions during 2013. Cancer survivors previously treated for selected diagnoses were identified from The Swedish Childhood Cancer Register (16-24 years old at inclusion, ≥5 years after diagnosis) and approached regarding study participation. Online focus group discussions of mixed sex (n = 133) were performed on a chat platform in real time. Texts from the group discussions were analysed using qualitative content analysis. The analysis resulted in the main category Is it possible to have a baby? including five generic categories: Risk of infertility affects well-being, Dealing with possible infertility, Disclosure of possible infertility is a challenge, Issues related to heredity and Parenthood may be affected. The risk of infertility was described as having a negative impact on well-being and intimate relationships. Furthermore, the participants described hesitation about becoming a parent due to perceived or anticipated physical and psychological consequences of having had cancer. Given the sensitive topic of the study, the response rate (36%) is considered acceptable. The sample included participants who varied with regard to received fertility-related information, current fertility status and concerns related to the risk of being infertile. The results may be transferred to similar contexts with other groups of patients of childbearing age and a risk of impaired fertility due to disease. The findings imply that achieving parenthood, whether or not with biological children, is an area that

  11. How group size affects vigilance dynamics and time allocation patterns: the key role of imitation and tempo.

    Directory of Open Access Journals (Sweden)

    Pablo Michelena

    Full Text Available In the context of social foraging, predator detection has been the subject of numerous studies, which acknowledge the adaptive response of the individual to the trade-off between feeding and vigilance. Typically, animals gain energy by increasing their feeding time and decreasing their vigilance effort with increasing group size, without increasing their risk of predation ('group size effect'. Research on the biological utility of vigilance has prevailed over considerations of the mechanistic rules that link individual decisions to group behavior. With sheep as a model species, we identified how the behaviors of conspecifics affect the individual decisions to switch activity. We highlight a simple mechanism whereby the group size effect on collective vigilance dynamics is shaped by two key features: the magnitude of social amplification and intrinsic differences between foraging and scanning bout durations. Our results highlight a positive correlation between the duration of scanning and foraging bouts at the level of the group. This finding reveals the existence of groups with high and low rates of transition between activities, suggesting individual variations in the transition rate, or 'tempo'. We present a mathematical model based on behavioral rules derived from experiments. Our theoretical predictions show that the system is robust in respect to variations in the propensity to imitate scanning and foraging, yet flexible in respect to differences in the duration of activity bouts. The model shows how individual decisions contribute to collective behavior patterns and how the group, in turn, facilitates individual-level adaptive responses.

  12. Exploring views on long term rehabilitation for people with stroke in a developing country: findings from focus group discussions

    Science.gov (United States)

    2014-01-01

    Background The importance of long term rehabilitation for people with stroke is increasingly evident, yet it is not known whether such services can be materialised in countries with limited community resources. In this study, we explored the perception of rehabilitation professionals and people with stroke towards long term stroke rehabilitation services and potential approaches to enable provision of these services. Views from providers and users are important in ensuring whatever strategies developed for long term stroke rehabilitations are feasible and acceptable. Methods Focus group discussions were conducted involving 15 rehabilitation professionals and eight long term stroke survivors. All recorded conversations were transcribed verbatim and analysed using the principles of qualitative research. Results Both groups agreed that people with stroke may benefit from more rehabilitation compared to the amount of rehabilitation services presently provided. Views regarding the unavailability of long term rehabilitation services due to multi-factorial barriers were recognised. The groups also highlighted the urgent need for the establishment of community-based stroke rehabilitation centres. Family-assisted home therapy was viewed as a potential approach to continued rehabilitation for long term stroke survivors, given careful planning to overcome several family-related issues. Conclusions Barriers to the provision of long term stroke rehabilitation services are multi-factorial. Establishment of community-based stroke rehabilitation centres and training family members to conduct home-based therapy are two potential strategies to enable the continuation of rehabilitation for long term stroke survivors. PMID:24606911

  13. The lay user perspective on the quality of pharmaceuticals, drug therapy and pharmacy services--results of focus group discussions

    DEFF Research Database (Denmark)

    Traulsen, Janine Morgall; Almarsdóttir, Anna Birna; Björnsdóttir, Ingunn

    2002-01-01

    : The lay perspective emphasizes a definite split between lay and expert views on the value and quality of pharmaceuticals, drug therapy and pharmacy services, as well as in their assessment of risk. Participants voiced spontaneous criticism of the roles of both physicians and pharmacists in drug therapy......BACKGROUND: This article presents the results of a study on quality of pharmacy services and perceived risk of pharmaceuticals. The results presented here are part of a multi-study evaluation of major changes in drug distribution in Iceland. OBJECTIVES: This sub-study addressed the question: what...... is the lay user perspective on pharmaceuticals and pharmacy services, including their perception of risk? METHODS: To answer this question, seven focus group discussions were conducted with pharmacy customers in different locations in Iceland following new drug distribution legislation in 1996. RESULTS...

  14. The Colombian conference of bishops and its participation in peace negotiations with insurgent groups: origins and discussions (1982-1990

    Directory of Open Access Journals (Sweden)

    Andrea Cristancho

    2011-06-01

    Full Text Available This paper analyses the most representative academic works about the participation of the Colombian Bishops’ Conference in negotiations with insurgent groups during the eighties, focusing on their perspective about their vision of peace. In that sense, this paper analyses how the Colombian clergy adapted to the national reality their perspective of peace, identifying the main debates and the wide variety of answers, focusing on two main issues: the relevance of establishing a relationship between the need to address social issues with the overcoming of violence and the participation of bishops and priests in the talks with the insurgency. As a result of these discussions, the Colombian Catholic Church gained greater unity in action on peace and conflict.

  15. Survey and online discussion groups to develop a patient-rated outcome measure on acceptability of treatment response in vitiligo.

    Science.gov (United States)

    Tour, Selina K; Thomas, Kim S; Walker, Dawn-Marie; Leighton, Paul; Yong, Adrian Sw; Batchelor, Jonathan M

    2014-06-14

    Vitiligo is a chronic depigmenting skin disorder which affects around 0.5-1% of the world's population. The outcome measures used most commonly in trials to judge treatment success focus on repigmentation. Patient-reported outcome measures of treatment success are rarely used, although recommendations have been made for their inclusion in vitiligo trials. This study aimed to evaluate the face validity of a new patient-reported outcome measure of treatment response, for use in future trials and clinical practice. An online survey to gather initial views on what constitutes treatment success for people with vitiligo or their parents/carers, followed by online discussion groups with patients to reach consensus on what constitutes treatment success for individuals with vitiligo, and how this can be assessed in the context of trials. Participants were recruited from an existing database of vitiligo patients and through posts on the social network sites Facebook and Twitter. A total of 202 survey responses were received, of which 37 were excluded and 165 analysed. Three main themes emerged as important in assessing treatment response: a) the match between vitiligo and normal skin (how well it blends in); b) how noticeable the vitiligo is and c) a reduction in the size of the white patches. The majority of respondents said they would consider 80% or more repigmentation to be a worthwhile treatment response after 9 months of treatment. Three online discussion groups involving 12 participants led to consensus that treatment success is best measured by asking patients how noticeable their vitiligo is after treatment. This was judged to be best answered using a 5-point Likert scale, on which a score of 4 or 5 represents treatment success. This study represents the first step in developing a patient reported measure of treatment success in vitiligo trials. Further work is now needed to assess its construct validity and responsiveness to change.

  16. Amylin Amyloid Inhibition by Flavonoid Baicalein: Key Roles of Its Vicinal Dihydroxyl Groups of the Catechol Moiety.

    Science.gov (United States)

    Velander, Paul; Wu, Ling; Ray, W Keith; Helm, Richard F; Xu, Bin

    2016-08-09

    Amyloid formation of the 37-residue amylin is involved in the pathogenesis of type 2 diabetes and, potentially, diabetes-induced neurological deficits. Numerous flavonoids exhibit inhibitory effects against amylin amyloidosis, but the mechanisms of inhibition remain unclear. Screening a library of natural compounds uncovered a potent lead compound, the flavone baicalein. Baicalein inhibits amylin amyloid formation and reduces amylin-induced cytotoxicity. Analogue analyses demonstrated, for the first time, key roles of the vicinal hydroxyl groups on the A-ring. We provided mass spectrometric evidence that incubating baicalein and amylin leads to their conjugation, consistent with a Schiff base mechanism.

  17. [Development of clinical trial education program for pharmaceutical science students through small group discussion and role-playing using protocol].

    Science.gov (United States)

    Imakyure, Osamu; Shuto, Hideki; Nishikawa, Fumi; Hagiwara, Yoshifuka; Inoue, Sachiko; Koyanagi, Taeko; Hirakawa, Masaaki; Kataoka, Yasufumi

    2010-08-01

    The acquirement of basic knowledge of clinical trials and professional attitude in their practices is a general instructional objective in the Model Core Curriculum for Pharmaceutical Education. Unfortunately, the previous program of clinical trial education was not effective in the acquirement of a professional attitude in their practices. Then, we developed the new clinical trial education program using protocol through small group discussion (SGD) and roll-playing. Our program consists of 7 steps of practical training. In step 1, the students find some problems after presentation of the protocol including case and prescription. In step 2, they analyse the extracted problems and share the information obtained in SGD. In steps 3 and 5, five clinical case scenarios are presented to the students and they discuss which case is suitable for entry to the clinical trial or which case corresponds to the discontinuance criteria in the present designed protocol. In steps 4 and 6, the roll-playing is performed by teachers and students as doctors and clinical research coordinators (CRC) respectively. Further, we conducted a trial practice based on this program for the students. In the student's self-evaluation into five grades, the average score of the skill acquisition level in each step was 3.8-4.7 grade. Our clinical trial education program could be effective in educating the candidates for CRC or clinical pharmacists.

  18. A discussion of key values to inform the design and delivery of services for HIV-affected women and couples attempting pregnancy in resource-constrained settings

    Directory of Open Access Journals (Sweden)

    Renee Heffron

    2015-12-01

    Full Text Available Introduction: HIV-affected women and couples often desire children and many accept HIV risk in order to attempt pregnancy and satisfy goals for a family. Risk reduction strategies to mitigate sexual and perinatal HIV transmission include biomedical and behavioural approaches. Current efforts to integrate HIV and reproductive health services offer prime opportunities to incorporate strategies for HIV risk reduction during pregnancy attempts. Key client and provider values about services to optimize pregnancy in the context of HIV risk provide insights for the design and implementation of large-scale “safer conception” programmes. Discussion: Through our collective experience and discussions at a multi-disciplinary international World Health Organization–convened workshop to initiate the development of guidelines and an algorithm of care to support the delivery of services for HIV-affected women and couples attempting pregnancy, we identified four values that are key to the implementation of these programmes: (1 understanding fertility care and an ability to identify potential fertility problems; (2 providing equity of access to resources enabling informed decision-making about reproductive choices; (3 creating enabling environments that reduce stigma associated with HIV and infertility; and (4 creating enabling environments that encourage disclosure of HIV status and fertility status to partners. Based on these values, recommendations for programmes serving HIV-affected women and couples attempting pregnancy include the following: incorporation of comprehensive reproductive health counselling; training to support the transfer and exchange of knowledge between providers and clients; care environments that reduce the stigma of childbearing among HIV-affected women and couples; support for safe and voluntary disclosure of HIV and fertility status; and increased efforts to engage men in reproductive decision-making at times that align with

  19. Carotenoid derivatives inhibit nuclear factor kappa B activity in bone and cancer cells by targeting key thiol groups.

    Science.gov (United States)

    Linnewiel-Hermoni, Karin; Motro, Yair; Miller, Yifat; Levy, Joseph; Sharoni, Yoav

    2014-10-01

    Aberrant activation of the nuclear factor kappa B (NFkB) transcription system contributes to cancer progression, and has a harmful effect on bone health. Several major components of the NFkB pathway such as IkB Kinase (IKK) and the NFkB subunits contain cysteine residues that are critical for their activity. The interaction of electrophiles with these cysteine residues results in NFkB inhibition. Carotenoids, hydrophobic plant pigments, are devoid of electrophilic groups, and we have previously demonstrated that carotenoid derivatives, but not the native compounds activate the Nrf2 transcription system. The aim of the current study was to examine whether carotenoid derivatives inhibit NFkB, and, if so, to determine the molecular mechanism underpinning the inhibitory action. We report in the present study that a mixture of oxidized derivatives, prepared by ethanol extraction from partially oxidized lycopene preparation, inhibited NFkB reporter gene activity. In contrast, the intact carotenoid was inactive. A series of synthetic dialdehyde carotenoid derivatives inhibited reporter activity as well as several stages of the NFkB pathway in both cancer and bone cells. The activity of the carotenoid derivatives depended on the reactivity of the electrophilic groups in reactions such as Michael addition to sulfhydryl groups of proteins. Specifically, carotenoid derivatives directly interacted with two key proteins of the NFkB pathway: the IKKβ and the p65 subunit. Direct interaction with IKKβ was found in an in vitro kinase assay with a recombinant enzyme. The inhibition by carotenoid derivatives of p65 transcriptional activity was observed in a reporter gene assay performed in the presence of excess p65. This inhibition action resulted, at least in part, from direct interaction of the carotenoid derivative with p65 leading to reduced binding of the protein to DNA as evidenced by electrophoretic mobility shift assay (EMSA) experiments. Importantly, we found by using

  20. Hierarchical Group Based Mutual Authentication and Key Agreement for Machine Type Communication in LTE and Future 5G Networks

    Directory of Open Access Journals (Sweden)

    Probidita Roychoudhury

    2017-01-01

    Full Text Available In view of the exponential growth in the volume of wireless data communication among heterogeneous devices ranging from smart phones to tiny sensors across a wide range of applications, 3GPP LTE-A has standardized Machine Type Communication (MTC which allows communication between entities without any human intervention. The future 5G cellular networks also envisage massive deployment of MTC Devices (MTCDs which will increase the total number of connected devices hundredfold. This poses a huge challenge to the traditional cellular system processes, especially the traditional Mutual Authentication and Key Agreement (AKA mechanism currently used in LTE systems, as the signaling load caused by the increasingly large number of devices may have an adverse effect on the regular Human to Human (H2H traffic. A solution in the literature has been the use of group based architecture which, while addressing the authentication traffic, has their share of issues. This paper introduces Hierarchical Group based Mutual Authentication and Key Agreement (HGMAKA protocol to address those issues and also enables the small cell heterogeneous architecture in line with 5G networks to support MTC services. The aggregate Message Authentication Code based approach has been shown to be lightweight and significantly efficient in terms of resource usage compared to the existing protocols, while being robust to authentication message failures, and scalable to heterogeneous network architectures.

  1. Challenges for achieving safe and effective radical cure of Plasmodium vivax: a round table discussion of the APMEN Vivax Working Group.

    Science.gov (United States)

    Thriemer, Kamala; Ley, Benedikt; Bobogare, Albino; Dysoley, Lek; Alam, Mohammad Shafiul; Pasaribu, Ayodhia P; Sattabongkot, Jetsumon; Jambert, Elodie; Domingo, Gonzalo J; Commons, Robert; Auburn, Sarah; Marfurt, Jutta; Devine, Angela; Aktaruzzaman, Mohammad M; Sohel, Nayeem; Namgay, Rinzin; Drukpa, Tobgyel; Sharma, Surender Nath; Sarawati, Elvieda; Samad, Iriani; Theodora, Minerva; Nambanya, Simone; Ounekham, Sonesay; Mudin, Rose Nanti Binti; Da Thakur, Garib; Makita, Leo Sora; Deray, Raffy; Lee, Sang-Eun; Boaz, Leonard; Danansuriya, Manjula N; Mudiyanselage, Santha D; Chinanonwait, Nipon; Kitchakarn, Suravadee; Nausien, Johnny; Naket, Esau; Duc, Thang Ngo; Do Manh, Ha; Hong, Young S; Cheng, Qin; Richards, Jack S; Kusriastuti, Rita; Satyagraha, Ari; Noviyanti, Rintis; Ding, Xavier C; Khan, Wasif Ali; Swe Phru, Ching; Guoding, Zhu; Qi, Gao; Kaneko, Akira; Miotto, Olivo; Nguitragool, Wang; Roobsoong, Wanlapa; Battle, Katherine; Howes, Rosalind E; Roca-Feltrer, Arantxa; Duparc, Stephan; Bhowmick, Ipsita Pal; Kenangalem, Enny; Bibit, Jo-Anne; Barry, Alyssa; Sintasath, David; Abeyasinghe, Rabindra; Sibley, Carol H; McCarthy, James; von Seidlein, Lorenz; Baird, J Kevin; Price, Ric N

    2017-04-05

    The delivery of safe and effective radical cure for Plasmodium vivax is one of the greatest challenges for achieving malaria elimination from the Asia-Pacific by 2030. During the annual meeting of the Asia Pacific Malaria Elimination Network Vivax Working Group in October 2016, a round table discussion was held to discuss the programmatic issues hindering the widespread use of primaquine (PQ) radical cure. Participants included 73 representatives from 16 partner countries and 33 institutional partners and other research institutes. In this meeting report, the key discussion points are presented and grouped into five themes: (i) current barriers for glucose-6-phosphate deficiency (G6PD) testing prior to PQ radical cure, (ii) necessary properties of G6PD tests for wide scale deployment, (iii) the promotion of G6PD testing, (iv) improving adherence to PQ regimens and (v) the challenges for future tafenoquine (TQ) roll out. Robust point of care (PoC) G6PD tests are needed, which are suitable and cost-effective for clinical settings with limited infrastructure. An affordable and competitive test price is needed, accompanied by sustainable funding for the product with appropriate training of healthcare staff, and robust quality control and assurance processes. In the absence of quantitative PoC G6PD tests, G6PD status can be gauged with qualitative diagnostics, however none of the available tests is currently sensitive enough to guide TQ treatment. TQ introduction will require overcoming additional challenges including the management of severely and intermediately G6PD deficient individuals. Robust strategies are needed to ensure that effective treatment practices can be deployed widely, and these should ensure that the caveats are outweighed by  the benefits of radical cure for both the patients and the community. Widespread access to quality controlled G6PD testing will be critical.

  2. 物联网关键技术和主要问题探讨%Discussion of the key technologies and main problems of IOT

    Institute of Scientific and Technical Information of China (English)

    徐颖秦; 谢林柏

    2011-01-01

    IOT (Intemet of things) is regarded as the engine of economic development in the world today that it will spawn industry informatization development to deeper. But the people in industry insider hold different views on the basic concept of IOT. Based on understanding of the three typies IOT concept,the analysis on the relationship between IOT, sensor network, communication network, Intemet and ubiquitous network, the basic connotation is summarized. The key technologies, the current development situation and main urgent problems of IOT in our country are discussed in this paper.%物联网已被认为是当今世界经济发展的引擎,将催生行业信息化向更深层次发展.但当前业内人士对物联网基本内涵的理解却不尽相同.该文详细解读了目前对物联网概念的3种理解,分析了物联网、传感网、互联网、通信网及泛在网的关系,总结了物联网概念的基本内涵,探讨了物联网的关键技术、我国物联网的发展现状和急需解决的主要问题.

  3. Researching and Discussing On ULH-DWDM Optic Fiber Telecom Key Problems%ULH-DWDM光通信关键技术探析

    Institute of Scientific and Technical Information of China (English)

    江明华

    2014-01-01

    There is no avoidance interfere in telecom transmission media,with the development of technology,people use ULH-DWDM fiber transmission to enhance capacity and distance.It saves much electronic trunk devices, induces much cost,raises system’s transmission quality and ability. The key problems in fiber transmission ,such as magnifying technology,dispersion compensating technology,non-linear cheecking technology,code pattern modulating technology.etc.In this paper,it will analyze and discuss these technologies and their research deeply.%在光通信传输媒体中不可避免存在干扰,随着科技的发达,人们利用ULH-DWDM光传输来提高传输速度、传输容量和传输距离。节省了大量的中继器,减少建设成本,增强系统的质量和可靠度。ULH-DWDM光通信传输系统中有许多的关键技术,如光放大技术、色散补偿技术、非线性抑制、码型调制技术等,本文将对这些技术及其研究动态作深入分析和探讨。

  4. Determinants of physical activity and sedentary behaviour in university students: a qualitative study using focus group discussions.

    Science.gov (United States)

    Deliens, Tom; Deforche, Benedicte; De Bourdeaudhuij, Ilse; Clarys, Peter

    2015-02-28

    College or university is a critical period regarding unhealthy changes in energy related behaviours in students. The first objective of this explorative study was to identify determinants of physical activity and sedentary behaviour in Belgian university students. Secondly, we aimed to collect ideas and recommendations to increase physical activity and decrease sedentary behaviours in university students. Using a semi-structured question guide, seven focus group discussions were conducted consisting of 17 male and 29 female university students from a variety of study disciplines, with a mean age of 20.7 ± 1.6 yrs. Using Nvivo9, an inductive thematic approach was used for data analysis. Students reported that both physical and sedentary activities were influenced by individual factors (e.g. perceived enjoyment, self-discipline, time and convenience), their social networks (e.g. (lack of) parental control, modelling, social support), physical environment (e.g. availability and accessibility, travel time/distance, prices), and macro environment (e.g. media and advertising). Furthermore, the relationships between determinants and university students' physical activity and sedentary behaviour seemed to be moderated by university characteristics, such as residency, university lifestyle, exams and academic pressure. Recommendations for future physical activity interventions include improving information strategies regarding on-campus sports activities, cheaper and/or more flexible sports subscriptions and formulas, including 'sports time' into the curricula, and providing university bicycles around campus. Students also believed that increasing students' physical activity might decrease their sedentary behaviour at the same time. The recommendations and ideas discussed in this study may facilitate the development of effective and tailored (multilevel) intervention programs aiming to increase physical activity and decrease sedentary behaviours in university students.

  5. Key issues discussion of large-scale production of microalgae%微藻规模化生产的关键问题

    Institute of Scientific and Technical Information of China (English)

    孙丽英; 何皓; 田宜水; 齐泮仑; 赵立欣

    2012-01-01

    With the rapid development of China aviation industry,the situation of aviation carbon e-mission reduction was severiously. Bio-SPK becomes the ideal alternative fuels for the aviation kerosene because of good carbon emission reduction. As microalgae have the advantages such as high oil-producing and good adaptability become an primary raw material for bio-SPK production. According to the requirements and raw materials selection of bio-SPK industry development, the key issues existing in the large-scale microalgae production including oil-rich and high-yielding microalgae species breeding, planting system selection, recovery technology improvements, costs of microalgae bio-SPK reduction and suitable regions for large-scale microalgae production was discussed, to seek the path for large-scale production, and proposed some suggestions in order to provide some reference for the Chinese bio-SPK industry development by using microalgae as raw materials.%随着我国航空业的快速发展,航空碳减排形势严峻.航空生物燃料因其良好的减排性成为航空煤油的理想替代燃料,作为主要原料的微藻因具有产油率高、适应性强等优势,成为最有潜力的航空生物燃料原料.文章根据航空生物燃料产业化发展对于原料的选择和要求,探讨了富油高产微藻藻种的选育、规模化生产培养方式的选择、采收技术的改进、微藻航空生物燃料生产成本的降低以及微藻规模化生产适宜区域选择等关键问题,以寻求解决微藻实现规模化生产的路径,并提出相关建议,为中国以微藻为原料生产航空生物燃料产业发展提供参考.

  6. 析基于博弈论的网络团购问题%Discussion on Online Group-buying Based on Game Theory

    Institute of Scientific and Technical Information of China (English)

    牟微微

    2011-01-01

    作为新时代的产物,网络团购深受消费者与商家的喜欢。消费者通过网络平台自发组团与商家进行交易,亦或通过各类网站申请成为会员,直接参团购买。但就是这种改变传统的商业模式引发当前的种种质疑。文章通过博弈理论,分析网络团购的问题关键,并进一步探讨解决问题的方法,以促进网络团购的健康发展。%Online group-buying,which is the product of this new era,has been deeply loved by both consumers as well as businesses.Through the platform of network,the consumer can either voluntarily join the buying group and together they trade with the businesses or he(or she) can apply for the membership of some website and directly deal with the businesses.However,it is this kind of business-customer mode,which changes the traditional way of buying,that causes series of problems.This paper attempts to analyze the key issue of online group-buying on the basis of game theory and discuss further solutions to the issue,trying to promote its healthy development in the future.

  7. Teacher-student co-construction processes in biology: Strategies for developing mental models in large group discussions

    Science.gov (United States)

    Nunez Oviedo, Maria Cecilia

    The aim of this study was to describe co-construction processes in large group discussions. Co-construction, as used here, is a process by which the teacher and the students work together to construct and evaluate mental models of a target concept. Data were collected for an in-depth case study of a single teacher instructing middle school students with an innovative curriculum on human respiration. Data came from transcripts of video taped lessons, drawings, and pre- and post-test scores. Quantitative and qualitative analyses were conducted. In the quantitative analysis, differences in gains between one and two standard deviations in size were found between the pre- and post-test scores indicating that the students increased their understanding about human respiration. In the qualitative analysis, a generative exploratory method followed by a convergent coded method was conducted to examine teacher-student interaction patterns. The aim of this part was to determine how learning occurred by attempting to connect dialogue patterns with underlying cognitive processes. The main outcome of the study is a hypothesized model containing four layers of nested teaching strategies. Listed from large to small time scales these are: the Macro Cycle, the Co-construction Modes, the Micro Cycle, and the Teaching Tactics. The most intensive analysis focused on identifying and articulating the Co-construction Modes---Accretion Mode, Disconfirmation Mode, Modification Mode, Evolution Mode, and Competition Mode---and their relations to the other levels of the model. These modes can either describe the construction and evaluation of individual model elements or of entire models giving a total of ten modes. The frequency of these co-construction modes was then determined by coding, twenty-six hours of transcripts. The most frequent modes were the Accretion Mode and the Disconfirmation Mode. The teacher's and the students' contributions to the co-construction process were also examined

  8. Materials R and D for a timely DEMO: Key findings and recommendations of the EU Roadmap Materials Assessment Group

    Energy Technology Data Exchange (ETDEWEB)

    Stork, Derek, E-mail: derek.stork@ccfe.ac.uk [EFDA Power Plant Physics and Technology, Boltzmannstr. 2, Garching, 85748 Germany (Germany); Agostini, Pietro [ENEA, Brasimone Research Centre, 40032, Camugnano, Bologna (Italy); Boutard, Jean-Louis [CEA, cab HC, Saclay, F-91191, Gif-sur-Yvette (France); Buckthorpe, Derek [AMEC, Booths Park, Chelford Road, Knutsford, Cheshire, WA16 8QZ (United Kingdom); Diegele, Eberhard [Karlsruhe Institute for Technology, IMF-I, D-7602, Karlsruhe (Germany); Dudarev, Sergei L. [Euratom-CCFE Association, Culham Science Centre, Abingdon, OX14 3DB (United Kingdom); English, Colin [National Nuclear Laboratory, 5th Floor, Chadwick House, Warrington Road, Birchwood Park, WA3 6AE (United Kingdom); Federici, Gianfranco [EFDA Power Plant Physics and Technology, Boltzmannstr. 2, Garching, 85748 Germany (Germany); Gilbert, Mark R. [Euratom-CCFE Association, Culham Science Centre, Abingdon, OX14 3DB (United Kingdom); Gonzalez, Sehila [EFDA Power Plant Physics and Technology, Boltzmannstr. 2, Garching, 85748 Germany (Germany); Ibarra, Angel [CIEMAT, Avda. Complutense 40, Madrid (Spain); Linsmeier, Christian [Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung–Plasmaphysik, EURATOM Association, 52425 Jülich (Germany); Puma, Antonella Li [CEA, DEN, Saclay, DM2S, SERMA, F-91191, Gif-sur-Yvette (France); Marbach, Gabriel [CEA, cab HC, Saclay, F-91191, Gif-sur-Yvette (France); Packer, Lee W. [Euratom-CCFE Association, Culham Science Centre, Abingdon, OX14 3DB (United Kingdom); Raj, Baldev [Indian National Academy of Engineering, Shaheed Jeet Singh Marg, New Delhi 110016 (India); Rieth, Michael [Karlsruhe Institute for Technology, IMF-I, D-7602, Karlsruhe (Germany); Tran, Min Quang [Ecole Polytechnique Federale de Lausanne—CRPP, Association Euratom-Switzerland, 1015 Lausanne (Switzerland); and others

    2014-10-15

    The findings of the EU Fusion Programme's ‘Materials Assessment Group’ (MAG), assessing readiness of Structural, Plasma Facing (PF) and High Heat Flux (HHF) materials for DEMO, are discussed. These are incorporated into the EU Fusion Power Roadmap [1], with a decision to construct DEMO in the early 2030s. The methodology uses project-based and systems-engineering approaches, the concept of Technology Readiness Levels, and considers lessons learned from Fission reactor material development. ‘Baseline’ materials are identified for each DEMO role, and the DEMO mission risks analysed from the known limitations, or unknown properties, associated with each baseline material. R and D programmes to address these risks are developed. The DEMO assessed has a phase I with a ‘starter blanket’: the blanket must withstand ≥2 MW yr m{sup −2} fusion neutron flux (equivalent to ∼20 dpa front-wall steel damage). The baseline materials all have significant associated risks, so development of ‘Risk Mitigation Materials’ (RMM) is recommended. The R and D programme has parallel development of the baseline and RMM, up to ‘down-selection’ points to align with decisions on the DEMO blanket and divertor engineering definition. ITER licensing experience is used to refine the issues for materials nuclear testing, and arguments are developed to optimise scope of materials tests with fusion neutron (‘14 MeV’) spectra before DEMO design finalisation. Some 14 MeV testing is still essential, and the Roadmap requires deployment of a ≥30 dpa (steels) testing capability by 2026. Programme optimisation by the pre-testing with fission neutrons on isotopically- or chemically-doped steels and with ion-beams is discussed along with the minimum 14 MeV testing programme, and the key role which fundamental and mission-oriented modelling can play in orienting the research.

  9. Life Cycle Leadership Theory vs. Theory on the Phases of Small Group Discussion: Comparisons, Contrasts, and Examples.

    Science.gov (United States)

    Preston, Charles Thomas, Jr.

    The work of Paul Hersey and Kenneth Blanchard on life-cycle leadership was compared and contrasted to three studies on group phase theories. The studies on group phases were conducted by Robert Bales and Fred Strodtbeck in 1951, Thomas Scheidel and Laura Crowell in 1964, and B. Aubrey Fisher in 1970. The two theoretical approaches were found to…

  10. A Multiple Group Measurement Model of Children's Reports of Parental Socioeconomic Status. Discussion Papers No. 531-78.

    Science.gov (United States)

    Mare, Robert D.; Mason, William M.

    An important class of applications of measurement error or constrained factor analytic models consists of comparing models for several populations. In such cases, it is appropriate to make explicit statistical tests of model similarity across groups and to constrain some parameters of the models to be equal across groups using a priori substantive…

  11. When Scientific Knowledge, Daily Life Experience, Epistemological and Social Considerations Intersect: Students' Argumentation in Group Discussions on a Socio-scientific Issue

    Science.gov (United States)

    Albe, Virginie

    2008-01-01

    Socio-scientific issues in class have been proposed in an effort to democratise science in society. A micro-ethnographic approach has been used to explore how students elaborate arguments on a socio-scientific controversy in the context of small group discussions. Several processes of group argumentation have been identified. Students’ arguments were elaborated from scientific data, common ideas and epistemological and strategic considerations. Students’ social interactions influenced the patterns of argumentation elaborated within the group discussions. Implications of this study for the teaching of socio-scientific issues in class are discussed.

  12. Agricultural producers’ groups in the Czech Republic: introductory review and discussion of the problem area economic performance measurement

    Directory of Open Access Journals (Sweden)

    Jan Vavřina

    2012-01-01

    Full Text Available Each company is surrounded by the micro- and macro-environment affecting also its economic performance. These factors are not only individual accounting entries, but also analytical inputs as the internal company processes, management of costs or short-term financial decisions and specifically in the case of agriculture within the EU also the public subsidy schemes implemented through the EU Common Agricultural Policy. Groups of agricultural producers are created as a response to current market dynamics and the opportunity for each agricultural enterprise regardless the size. In this paper, the basis for agricultural cooperation is provided, traditional economic performance measures are presented and their applicability on the sample of agricultural producers’ groups and wholesale entities is empirically verified. Wholesale entities are analysed by its business activity and performance features to consider whether they are suitable peer group for comparing economic performance of examined agricultural producers’ group. Since the economic performance of agricultural producers’ groups directly affects the economic performance of all participating entities, and vice versa, their economic performance measurement may involve specific constraints. According to the structure and characteristics of agricultural producers’ groups may be inferred that whilst the common performance measurement techniques are applicable on the majority of companies, agricultural producers’ groups represent specific entities and therefore need adjusted performance measurement approach.

  13. Discussion on the key problems of the administration in production safety%安全生产管理关键性问题的探讨

    Institute of Scientific and Technical Information of China (English)

    冉茂亮

    2011-01-01

    The key that improves the management level of work safety depends on definiting duty,enhancing consciousness, straightening out relations and strengthening management.%提高安全生产管理水平关键在于明确职责,增强意识,理顺关系,强化管理。

  14. Disinvestment policy and the public funding of assisted reproductive technologies: outcomes of deliberative engagements with three key stakeholder groups.

    Science.gov (United States)

    Hodgetts, Katherine; Hiller, Janet E; Street, Jackie M; Carter, Drew; Braunack-Mayer, Annette J; Watt, Amber M; Moss, John R; Elshaug, Adam G

    2014-05-05

    Measures to improve the quality and sustainability of healthcare practice and provision have become a policy concern. In addition, the involvement of stakeholders in health policy decision-making has been advocated, as complex questions arise around the structure of funding arrangements in a context of limited resources. Using a case study of assisted reproductive technologies (ART), deliberative engagements with a range of stakeholder groups were held on the topic of how best to structure the distribution of Australian public funding in this domain. Deliberative engagements were carried out with groups of ART consumers, clinicians and community members. The forums were informed by a systematic review of ART treatment safety and effectiveness (focusing, in particular, on maternal age and number of treatment cycles), as well as by international policy comparisons, and ethical and cost analyses. Forum discussions were transcribed and subject to thematic analysis. Each forum demonstrated stakeholders' capacity to understand concepts of choice under resource scarcity and disinvestment, and to countenance options for ART funding not always aligned with their interests. Deliberations in each engagement identified concerns around 'equity' and 'patient responsibility', culminating in a broad preference for (potential) ART subsidy restrictions to be based upon individual factors rather than maternal age or number of treatment cycles. Community participants were open to restrictions based upon measures of body mass index (BMI) and smoking status, while consumers and clinicians saw support to improve these factors as part of an ART treatment program, as distinct from a funding criterion. All groups advocated continued patient co-payments, with measures in place to provide treatment access to those unable to pay (namely, equity of access). Deliberations yielded qualitative, socially-negotiated evidence required to inform ethical, accountable policy decisions in the specific

  15. The Effect of Education-Based Intervention Using Small Group Discussion in Empowering Adolescent Girls to Prevent Iron Deficiency Anemia

    Directory of Open Access Journals (Sweden)

    Fatemehsadat Seyed Nematollah Roshan

    2014-10-01

    Results: At baseline, independent T-test showed no significant difference between the two groups in the perceived susceptibility, perceived severity, and self efficacy, all of which could be regarded as empowerment process components (P>0.05. However, significant differences were observed after intervention. Also, the paired T-test showed a significant difference before and after the intervention in the test group in means of the perceived susceptibility, perceived severity, self efficacy and, in the grand scheme, adolescent girls' empowerment (P

  16. A study of space station needs, attributes and architectural options. Final briefing: Cost working group discussion session

    Science.gov (United States)

    1983-01-01

    The economic factors involved in the design and utilization of the space station are investigated. Topics include the economic benefits associated with research and production, the orbit transfer vehicle, and satellite servicing. Program costs and design options are examined. The possibilities of financing from the private sector are discussed.

  17. A key role for the urokinase plasminogen activator (uPA) in invasive Group A streptococcal infection.

    Science.gov (United States)

    Sanderson-Smith, Martina L; Zhang, Yueling; Ly, Diane; Donahue, Deborah; Hollands, Andrew; Nizet, Victor; Ranson, Marie; Ploplis, Victoria A; Walker, Mark J; Castellino, Francis J

    2013-01-01

    Recruitment of the serine protease plasmin is central to the pathogenesis of many bacterial species, including Group A streptococcus (GAS), a leading cause of morbidity and mortality globally. A key process in invasive GAS disease is the ability to accumulate plasmin at the cell surface, however the role of host activators of plasminogen in this process is poorly understood. Here, we demonstrate for the first time that the urokinase-type plasminogen activator (uPA) contributes to plasmin recruitment and subsequent invasive disease initiation in vivo. In the absence of a source of host plasminogen activators, streptokinase (Ska) was required to facilitate cell surface plasmin acquisition by GAS. However, in the absence of Ska, host activators were sufficient to promote cell surface plasmin acquisition by GAS strain 5448 during incubation with plasminogen or human plasma. Furthermore, GAS were able mediate a significant increase in the activation of zymogen pro-uPA in human plasma. In order to assess the contribution of uPA to invasive GAS disease, a previously undescribed transgenic mouse model of infection was employed. Both C57/black 6J, and AlbPLG1 mice expressing the human plasminogen transgene, were significantly more susceptible to invasive GAS disease than uPA-/- mice. The observed decrease in virulence in uPA-/-mice was found to correlate directly with a decrease in bacterial dissemination and reduced cell surface plasmin accumulation by GAS. These findings have significant implications for our understanding of GAS pathogenesis, and research aimed at therapeutic targeting of plasminogen activation in invasive bacterial infections.

  18. A key role for the urokinase plasminogen activator (uPA in invasive Group A streptococcal infection.

    Directory of Open Access Journals (Sweden)

    Martina L Sanderson-Smith

    Full Text Available Recruitment of the serine protease plasmin is central to the pathogenesis of many bacterial species, including Group A streptococcus (GAS, a leading cause of morbidity and mortality globally. A key process in invasive GAS disease is the ability to accumulate plasmin at the cell surface, however the role of host activators of plasminogen in this process is poorly understood. Here, we demonstrate for the first time that the urokinase-type plasminogen activator (uPA contributes to plasmin recruitment and subsequent invasive disease initiation in vivo. In the absence of a source of host plasminogen activators, streptokinase (Ska was required to facilitate cell surface plasmin acquisition by GAS. However, in the absence of Ska, host activators were sufficient to promote cell surface plasmin acquisition by GAS strain 5448 during incubation with plasminogen or human plasma. Furthermore, GAS were able mediate a significant increase in the activation of zymogen pro-uPA in human plasma. In order to assess the contribution of uPA to invasive GAS disease, a previously undescribed transgenic mouse model of infection was employed. Both C57/black 6J, and AlbPLG1 mice expressing the human plasminogen transgene, were significantly more susceptible to invasive GAS disease than uPA-/- mice. The observed decrease in virulence in uPA-/-mice was found to correlate directly with a decrease in bacterial dissemination and reduced cell surface plasmin accumulation by GAS. These findings have significant implications for our understanding of GAS pathogenesis, and research aimed at therapeutic targeting of plasminogen activation in invasive bacterial infections.

  19. Positioning of Fifth Grade Students in Small-Group Settings: Naming Participation in Discussion-Based Mathematics

    Science.gov (United States)

    Graves, Ingrid S.

    2010-01-01

    Through the lens of Schegloff's (1996) Action Theory, this study examined the dynamics of four groups of fifth-grade students as they learned to talk about academic mathematical reasoning over the course of a school year using Freeze Frame Analysis (Leander & Rowe, 2006) to help map "talking spaces" and Critical Discourse Analysis to understand…

  20. Barriers to Disclosing and Reporting Violence among Women in Pakistan: Findings from a National Household Survey and Focus Group Discussions

    Science.gov (United States)

    Andersson, Neil; Cockcroft, Anne; Ansari, Umaira; Omer, Khalid; Ansari, Noor M.; Khan, Amir; Chaudhry, Ubaid Ullah

    2010-01-01

    Worldwide, many women who experience domestic violence keep their experience secret. Few report to official bodies. In a national survey of abuse against women in Pakistan, we examined factors related to disclosure: women who had experienced physical violence telling someone about it. In focus groups, we explored why women do not report domestic…

  1. From Social Exclusion to Supported Inclusion: Adults with Intellectual Disability Discuss Their Lived Experiences of a Structured Social Group

    Science.gov (United States)

    Wilson, Nathan J.; Jaques, Hayden; Johnson, Amanda; Brotherton, Michelle L.

    2017-01-01

    Background: People with intellectual disability often have few friends and experience social exclusion. Recognising this gap, supported social groups with the aim of inclusion and interdependence were created by a supported employment provider. Methods: Interviews were undertaken with 10 adults with intellectual disability exploring their lived…

  2. Who Is the Competent Physics Student? A Study of Students' Positions and Social Interaction in Small-Group Discussions

    Science.gov (United States)

    Due, Karin

    2014-01-01

    This article describes a study which explored the social interaction and the reproduction and challenge of gendered discourses in small group discussions in physics. Data for the study consisted of video recordings of eight upper secondary school groups solving physics problems and 15 audiotaped individual interviews with participating students.…

  3. When Scientific Knowledge, Daily Life Experience, Epistemological and Social Considerations Intersect: Students' Argumentation in Group Discussions on a Socio-Scientific Issue

    Science.gov (United States)

    Albe, Virginie

    2008-01-01

    Socio-scientific issues in class have been proposed in an effort to democratise science in society. A micro-ethnographic approach has been used to explore how students elaborate arguments on a socio-scientific controversy in the context of small group discussions. Several processes of group argumentation have been identified. Students' arguments…

  4. Who Is the Competent Physics Student? A Study of Students' Positions and Social Interaction in Small-Group Discussions

    Science.gov (United States)

    Due, Karin

    2014-01-01

    This article describes a study which explored the social interaction and the reproduction and challenge of gendered discourses in small group discussions in physics. Data for the study consisted of video recordings of eight upper secondary school groups solving physics problems and 15 audiotaped individual interviews with participating students.…

  5. A discussion group program enhances the conceptual reasoning skills of students enrolled in a large lecture-format introductory biology course.

    Science.gov (United States)

    Peteroy-Kelly, Marcy A

    2007-01-01

    It has been well-established that discussion groups enhance student learning in large lecture courses. The goal of this study was to determine the impact of a discussion group program on the development of conceptual reasoning skills of students enrolled in a large lecture-format introductory biology course. In the discussion group, students worked on problems based on topics discussed in lecture. The program was evaluated using three assessment tools. First, student responses to pre- and posttests were analyzed. The test question asked the students to demonstrate the relationships between 10 different but related terms. Use of a concept map to link the terms indicated an advanced level of conceptual reasoning skills. There was a 13.8% increase in the use of concept maps from pre- to posttest. Second, the students took a Likert-type survey to determine the perceived impact of the program on their conceptual reasoning skills. Many of the students felt that the program helped them understand and use the main course concepts to logically solve problems. Finally, average exam grades increased as the semester progressed. The average final grade in the course was 75%. Students enrolled in the course the previous year (where the lecture component of the course did not assess or reflect student learning in the discussion group) had an average final grade of 69%. The results of this study demonstrate that the discussion group program improves the conceptual reasoning skills of students enrolled in a large lecture-format introductory biology course.

  6. Identification of mistakes and their correction by a small group discussion as a revision exercise at the end of a teaching module in biochemistry.

    Science.gov (United States)

    Bobby, Zachariah; Nandeesha, H; Sridhar, M G; Soundravally, R; Setiya, Sajita; Babu, M Sathish; Niranjan, G

    2014-01-01

    Graduate medical students often get less opportunity for clarifying their doubts and to reinforce their concepts after lecture classes. The Medical Council of India (MCI) encourages group discussions among students. We evaluated the effect of identifying mistakes in a given set of wrong statements and their correction by a small group discussion by graduate medical students as a revision exercise. At the end of a module, a pre-test consisting of multiple-choice questions (MCQs) was conducted. Later, a set of incorrect statements related to the topic was given to the students and they were asked to identify the mistakes and correct them in a small group discussion. The effects on low, medium and high achievers were evaluated by a post-test and delayed post-tests with the same set of MCQs. The mean post-test marks were significantly higher among all the three groups compared to the pre-test marks. The gain from the small group discussion was equal among low, medium and high achievers. The gain from the exercise was retained among low, medium and high achievers after 15 days. Identification of mistakes in statements and their correction by a small group discussion is an effective, but unconventional revision exercise in biochemistry. Copyright 2014, NMJI.

  7. Online Focus Group Discussion is a Valid and Feasible Mode When Investigating Sensitive Topics Among Young Persons With a Cancer Experience.

    Science.gov (United States)

    Wettergren, Lena; Eriksson, Lars E; Nilsson, Jenny; Jervaeus, Anna; Lampic, Claudia

    2016-05-09

    Clinical research often lacks participants of young age. Adding to the small amount of scientific studies that focus on the population entering adulthood, there are also difficulties to recruit them. To overcome this, there is a need to develop and scientifically evaluate modes for data collection that are suitable for adolescents and young adults. With this in mind we performed 39 online focus group discussions among young survivors of childhood cancer to explore thoughts and experiences around dating, being intimate with someone, and having children. The aim of the study was to evaluate online focus group discussions as a mode for data collection on sensitive issues among young persons with a cancer experience. One hundred thirty-three young persons (16-25 years) previously diagnosed with cancer, participated in 39 synchronous online focus group discussions (response rate 134/369, 36%). The mode of administration was evaluated by analyzing participant characteristics and interactions during discussions, as well as group members' evaluations of the discussions. Persons diagnosed with central nervous tumors (n=30, 27%) participated to a lower extent than those with other cancer types (n=103, 39%; χ 2= 4.89, P=.03). The participants described various health impairments that correspond to what would be expected among cancer survivors including neuropsychiatric conditions and writing disabilities. Even though participants were interested in others' experiences, sexual issues needed more probing by the moderators than did fertility-related issues. Group evaluations revealed that participants appreciated communicating on the suggested topics and thought that it was easier to discuss sex when it was possible to be anonymous toward other group members. Online focus group discussions, with anonymous participation, are suggested to be a feasible and valid mode for collecting sensitive data among young persons with a cancer experience.

  8. Review: Ralf Bohnsack, Aglaja Przyborski & Burkhard Schäffer (Eds. (2010. Das Gruppendiskussionsverfahren in der Forschungspraxis [The Group Discussion Technique in Research Practice

    Directory of Open Access Journals (Sweden)

    Diana Schmidt-Pfister

    2011-03-01

    Full Text Available This edited volume comprises a range of studies that have employed a group discussion technique in combination with a specific strategy for reconstructive social research—the so-called documentary method. The latter is an empirical research strategy based on the meta-theoretical premises of the praxeological sociology of knowledge, as developed by Ralf BOHNSACK. It seeks to access practice in a more appropriate manner, namely by differentiating between various dimensions of knowledge and sociality. It holds that habitual collective orientations, in particular, are best accessed through group discussions. Thus this book does not address the group discussion technique in general, as might be expected from the title. Instead, it presents various contributions from researchers interpreting transcripts of group discussions according to the documentary method. The chapters are grouped into three main sections, representing different frameworks of practice and habitual orientation: childhood, adolescence, and organizational or societal context. A fourth section includes chapters on further, potentially useful ways of employing this particular technique and approach, as well as a chapter on teaching it in a meaningful way. Each chapter is structured in the same way: introduction to the research field and focus; methodological discussion; exemplary interpretation of group discussions; and concluding remarks. Whilst the transcripts referred to by the authors are very helpfully presented in the chapters, there is a lack of methodological reflection on the group discussion technique itself, which, as mentioned above, is only evaluated in regard to the documentary method. URN: http://nbn-resolving.de/urn:nbn:de:0114-fqs110225

  9. Formulation of questions followed by small group discussion as a revision exercise at the end of a teaching module in biochemistry.

    Science.gov (United States)

    Bobby, Zachariah; Koner, Bidhan Chandra; Sridhar, M G; Nandeesha, H; Renuka, P; Setia, Sajita; Kumaran, S Senthil; Asmathulla, S

    2007-01-01

    Undergraduate medical students get fewer opportunities to clarify their doubts and to reinforce their understanding of concepts after lecture classes. There is no information available in the literature that addresses the question of usefulness of prior formulation of questions followed by small group discussion by undergraduate medical students as a revision exercise. The purpose of this work is to evaluate the effect of formulation of objective type short answer questions by undergraduate medical students followed by small group discussion on the answers of the questions prepared as a revision exercise on their understanding of the topic "amino acid metabolism" and the retention of the gain after 15 days. At the end of a regular teaching module on the topic of amino acid metabolism, undergraduate medical students were asked to prepare 16 objective type short answer questions on the various aspects of the topic as homework. Small group discussions involving 12-14 students in each group and lasting one hour were conducted on the questions and answers prepared by them in the presence of a faculty member. The effects on low, medium, and high achievers were evaluated with multiple choice questions by pre-test and post-tests before and after the group discussion. Formulation of questions was highly effective in improving understanding on the topic for all the students. The overall mean post-test scores after the formulation of questions (12.6) and after the small group discussion that followed (14.7) were significantly higher than the mean pre-test score (8.5). For high achievers, the gain from formulation of questions was higher than the gain from small group discussion. Small group discussion was highly effective for all students. The gain from small group discussion was higher among the low and medium achievers in comparison with the high achievers. The gain from the exercise was retained among the low, medium, and high achievers after 15 days. In conclusion

  10. Discussion on construction key points of steel portal frame%谈门式刚架结构体系的施工要点

    Institute of Scientific and Technical Information of China (English)

    王立文

    2012-01-01

    This paper respectively introduced in detail the bracing system, purlin system, wall frame system of portal frame light steel structure, the construction features of platform system and the construction key points, in order to help the construction personnel fully understand and mas- ter the portal frame structure system, so as to ensure the structural safety, reliable, had sufficient durability.%分别针对门式刚架轻型钢结构的支撑系统、檩条系统、墙骨架系统、平台系统的构造特点及施工要点进行了详细介绍,以帮助施工人员对门式刚架结构体系充分了解和熟练掌握,从而确保结构安全,可靠,具有足够的耐久性。

  11. Retention of allied health professionals in rural New South Wales: a thematic analysis of focus group discussions

    Directory of Open Access Journals (Sweden)

    Keane Sheila

    2012-06-01

    Full Text Available Abstract Background Uneven distribution of the medical workforce is globally recognised, with widespread rural health workforce shortages. There has been substantial research on factors affecting recruitment and retention of rural doctors, but little has been done to establish the motives and conditions that encourage allied health professionals to practice rurally. This study aims to identify aspects of recruitment and retention of rural allied health professionals using qualitative methodology. Methods Six focus groups were conducted across rural NSW and analysed thematically using a grounded theory approach. The thirty allied health professionals participating in the focus groups were purposively sampled to represent a range of geographic locations, allied health professions, gender, age, and public or private work sectors. Results Five major themes emerged: personal factors; workload and type of work; continuing professional development (CPD; the impact of management; and career progression. ‘Pull factors’ favouring rural practice included: attraction to rural lifestyle; married or having family in the area; low cost of living; rural origin; personal engagement in the community; advanced work roles; a broad variety of challenging clinical work; and making a difference. ‘Push factors’ discouraging rural practice included: lack of employment opportunities for spouses; perceived inadequate quality of secondary schools; age related issues (retirement, desire for younger peer social interaction, and intention to travel; limited opportunity for career advancement; unmanageable workloads; and inadequate access to CPD. Having competent clinical managers mitigated the general frustration with health service management related to inappropriate service models and insufficient or inequitably distributed resources. Failure to fill vacant positions was of particular concern and frustration with the lack of CPD access was strongly represented by

  12. Discuss on the key point of clinical course reform%探讨临床专业医学课程改革的关键

    Institute of Scientific and Technical Information of China (English)

    李辉; 付译节; 罗洪林

    2015-01-01

    The medicine development promotes medical education. Its core is the curriculum system reform. According to cognitivism learning theory, the clinical curriculum reform should aim to culture medical students’ holistic view, clinical thinking and scientific research ability. It makes great efforts to cultivate modernized medical personnel. The key point of clinical course reform includes changes of teaching institutions, integration and optimization of curriculums, and construct the teaching mode of structure, function and disease integration. Only insist advanced teaching idea, and grasp the key of reform, can we guarantee that medical curriculum reform was implemented smoothly.%医学科学发展推动医学教育改革,其核心是课程体系改革。从认知主义学习理论看来,临床专业医学课程改革应当以培养医学生的整体观、临床思维能力和科研能力为目标,努力培养适应时代需求的现代化医学人才。课程改革的关键,包括教学机构的变革,实现课程的整合与优化,构建结构、功能及疾病整合联系的教学模式。只有坚持先进的教学理念,把握改革的关键,才能保证医学课程改革顺利推进。

  13. Discussion on thermal dynamical-vacuum group deoxidization%热力--真空组合除氧的探讨

    Institute of Scientific and Technical Information of China (English)

    李德宁

    2015-01-01

    针对油田注汽锅炉水处理现在采用的真空——化学除氧法时,加化学药品来提高除氧效果致使蒸汽含盐量升高,影响蒸汽的品质,影响锅炉的寿命这一问题。本文探讨即能保证除氧效果又保证蒸汽的品质,延长锅炉的寿命,同时又降低生产成本的除氧方法。%According to the chemical deoxidization method - vacuum treatment of steam injection boiler in oil field water , the addition of chemicals to improve the removal effect of salinity resulted in increase of saltness in steam, steam quality, affect the service life of the boiler this problem. This paper discusses that can guarantee the removal effect and ensure the steam quality, prolongs the service life of the boiler, and reduce the production cost of deoxidization method.

  14. Discussion on the Key Points of Nursing for Patients with Hypertension%浅谈高血压病人的护理重点

    Institute of Scientific and Technical Information of China (English)

    陶亚玲

    2016-01-01

    Objective To explore the key points of nursing in patients with hypertension in clinical practice.Methods The clinical nursing experience of patients with hypertension were analyzed retrospectively.Results The patients after careful nursing and scientific guidance, the hypertension condition can be effectively controlled.Conclusion Scientific and careful nursing can promote the recovery of the disease severity in patients with hypertension, improve their quality of life, it is worthy of popularization and application.%目的:探究高血压病人在临床中的护理要点。方法回顾性分析对高血压病人的临床护理经验。结果患者经过精心的护理和科学的指导,其高血压病情能够得到有效控制。结论科学精心的护理能够促进高血压患者病情恢复,提高其生活质量,值得推广应用。

  15. Electronic Nature of Ketone Directing Group as a Key To Control C-2 vs C-4 Alkenylation of Indoles.

    Science.gov (United States)

    Lanke, Veeranjaneyulu; Bettadapur, Kiran R; Prabhu, Kandikere Ramaiah

    2016-11-04

    A novel mode of achieving site selectivity between C-2 and C-4 positions in the indole framework by altering the property of the ketone directing group is disclosed. Methyl ketone, as directing group, furnishes exclusively C-2 alkenylated product, whereas trifluoromethyl ketone changes the selectivity to C-4, indicating that the electronic nature of the directing group controls the unusual choice between a 5-membered and a 6-membered metallacycle. The screening of other carbonyl-derived directing groups reveals that strong and weak directing groups exhibit opposite selectivity. Experimental controls and deuteration experiments lend support to the proposed mechanism.

  16. The Effect of Group Discussion on the Quality of Life and HbA1c Levels of Adolescents With Diabetes.

    Science.gov (United States)

    Afshar, Mohamad; Memarian, Robabe; Mohammadi, Esa

    2014-08-01

    Diabetes is a metabolic syndrome and the most common endocrine disorder in childhood and adolescence. Diabetes occurs at any age but the highest outbreak is during ten to 15 years of age and 75% of the cases are diagnosed at the age 18. This study aimed to investigate the effect of a group discussion on the quality of life (QOL) and glycosylated hemoglobin A (HbA1c) levels of adolescents with diabetes. This quasi-experimental study was performed on 56 adolescents with diabetes who were referred to Golabchi Diabetes Center in Kashan, Iran. After obtaining written informed consent from the patients, blood sample was drawn for measuring sugar and HbA1c levels. The participants completed the questionnaire regarding the QOL. Patients were randomly allocated to four groups. All the groups attended similar group discussion sessions, which were conducted according to the guidance of diabetic specialists. The groups' members followed the discussed instructions for four months. Then, another questionnaire was completed and blood sugar and HbA1c levels were measured again. The results were compared by paired-samples t-test and Wilcoxon signed-rank test. After the group discussion sessions, in 56% of the patients the HbA1c levels (8.45 ± 1.35 and 6.98 ± 0.89 before and after intervention, respectively) and QOL were improved significantly. The mean age of these patients was 14.75 ± 1.80 years and the mean of daily insulin injection was 35.70 ± 13.42 units. Sharing experiences trough group discussions and receiving instructive feedbacks can improve the QOL and metabolic status of adolescents with diabetes.

  17. 数字航空摄影测量数据处理关键技术探讨%Discussed on Digital Aerial Survey Data Processing Key Technology

    Institute of Scientific and Technical Information of China (English)

    肖志婷; 郝娜

    2014-01-01

    with the computer technology , surveying and mapping technology and the rapid development of information technology , avi-ation photogrammetry technology also obtained the unprecedented development and progress, digital aerial photogrammetry technology has become the main way of modern aviation photogrammetry .Therefore, the study of digital aerial photogrammetry , has very impor-tant practical significance .This paper first introduces the development and application fields of digital aerial survey , then analyzed the digital aerial survey data processing key technology and its technical difficulties , finally, summarizes the research of this subject .%随着计算机技术、测绘技术与信息技术的快速发展,航空摄影测量技术也取得了前所未有的进步,数字航空摄影测量技术已经成为现代航空摄影测量的主要方式。因此,对数字航空摄影测量进行研究,具有十分重要的现实意义。本文首先介绍了数字航空摄影测量的发展与应用领域,然后分析了数字航空摄影测量数据处理关键技术及其技术难点,最后对本课题的研究进行了总结。

  18. Research progress of Group Key Management for Multi-layered Satellite Networks%多层卫星网络组密钥管理研究进展

    Institute of Scientific and Technical Information of China (English)

    余哲赋; 周海刚; 吴兆峰; 朱晓薇

    2012-01-01

    为保证多层卫星网络的通信安全,使用组密钥对通信进行加密是一个普遍而有效的方法。设计适合卫星网络的组密钥管理方案,是确保卫星通信安全的关键问题之一。本文介绍了多层卫星网络的概况,对现有多层卫星网络组密钥管理方案进行了分类,详细分析了几类典型的组密钥管理方案,指出了存在的问题,并对以后的研究方向作了展望。%Encrypting the contents of communication by using group key is an universal and effective method to ensure the security of communication in the Multi-layered satellite networks,and the design of a group key management scheme suitable for satellite networks is one of the key problems.This article provides an introduction of multi-layered satellite networks and classifies the routing protocols.This paper details several existing typical group key management schemes,and points out the corresponding disadvantages.The trends of group key management for multi-layered satellite networks are analyzed briefly.

  19. 一种分层分簇的组密钥管理方案%A HIERARCHICAL CLUSTERING-BASED GROUP KEY MANAGEMENT SCHEME

    Institute of Scientific and Technical Information of China (English)

    李珍格; 游林

    2014-01-01

    为了满足无线传感器网络组通信的安全,提出一种分层分簇的组密钥管理方案。该方案采用分层的体系结构,将组中节点分为管理层和普通层。BS通过构造特殊的组密钥多项式更新普通层组密钥,而管理层则采用二元单向函数进行组密钥的协商。分析表明,该方案很好满足了无线传感器网络中组密钥管理的前向安全性,后向安全性,并且减小了存储开销、计算开销和通信开销。%In this paper,a hierarchical clustering-based group key management scheme is proposed in order to satisfy the secure group communication in wireless sensor network.The proposed scheme adopts the hierarchical architecture and divides the nodes in the group into master-node layer and terminal layer.The group key of terminal layer is updated by constructing a special group key polynomial in BS,and the binary one-way function is used by the master-node layer for group key negotiation.Analysis demonstrates that the scheme well satisfies the forward security and backward security of the group key management in WSN,and reduces the storage overhead,computation overhead and communication overhead as well.

  20. 高校网站群建设与管理探讨%Discussion on University Website Group Construction and Management

    Institute of Scientific and Technical Information of China (English)

    罗南

    2015-01-01

    The construction and management of the University''s existing websites has brought a series of problems. The con-struction of the website group system, can avoid a group of websites bring about various drawbacks. This paper discusses the solutions of university website group construction and management.%高校现有网站的建设和管理带来了一系列问题,建设网站群系统,可以避免一群网站所带来的各种弊端.文章探讨了高校网站群建设与管理的解决方案.

  1. Use of Modified SOAP Notes and Peer-Led Small-Group Discussion in a Medical Physiology Course: Addressing the Hidden Curriculum

    Science.gov (United States)

    Kibble, Jonathan; Hansen, Penelope A.; Nelson, Loren

    2006-01-01

    Peer leading of small-group discussion of cases; use of modified subjective, objective, assessment of physiology (SOAP) notes; and opportunities for self-assessment were introduced into a Medical Physiology course to increase students' awareness and practice of professional behaviors. These changes arose from faculty members' understanding of the…

  2. Examining the Effects of Text Genre and Structure on Fourth-and Fifth-Grade Students' High-Level Comprehension as Evidenced in Small-Group Discussions

    Science.gov (United States)

    Li, Mengyi; Murphy, P. Karen; Firetto, Carla M.

    2014-01-01

    Although there is a rich literature on the role of text genre and structure on students' literal comprehension, more research is needed regarding the role of these text features on students' high-level comprehension as evidenced in their small-group discussions. As such, the present study examined the effects of text genre (i.e., narrative and…

  3. Perceptions of women, nurses, midwives and doctors about the use of video during birth to improve quality of care : focus group discussions

    NARCIS (Netherlands)

    van Lonkhuijzen, L.; Groenewout, M.; Schreuder, A.; Zeeman, G.; Scherpbier, A.; Aukes, L.; van den Berg, P.

    2011-01-01

    Please cite this paper as: van Lonkhuijzen L, Groenewout M, Schreuder A, Zeeman G, Scherpbier A, Aukes L, van den Berg P. Perceptions of women, nurses, midwives and doctors about the use of video during birth to improve quality of care: focus group discussions. BJOG 2011; DOI:10.1111/j.1471-0528.201

  4. Designing Transferable Skills Inventory for Assessing Students Using Group Discussion: A Case Study of First Year Electrical and Electronics Engineering Students

    Science.gov (United States)

    Tejaswani, K.; Madhuri, G. V.

    2015-01-01

    Employability skills among engineering graduates have been a concern due to their inability to perform on a professional platform to the employer's expected level. As they are higher cognitive skills, they are to be nurtured during the graduation period. Keeping this in view, group discussions are identified as one of the methods to elicit…

  5. The Tetramorium squaminode species group (Hymenoptera, Formicidae in the Arabian Peninsula, with a new record from the Kingdom of Saudi Arabia and keys to Arabian species

    Directory of Open Access Journals (Sweden)

    Mostafa Sharaf

    2015-05-01

    Full Text Available The Arabian species of the Tetramorium squaminode-group are treated. Tetramorium squaminode Santschi, 1911 is recorded for the first time from the Kingdom of Saudi Arabia and the Arabian Peninsula. Keys to the two Arabian species of the T. squaminode-group, T. latinode Collingwood & Agosti, 1996 and T. squaminode, based on worker and queen castes, are given and a regional distribution map is provided. Notes on habitats of T. squaminode are presented.

  6. Basic life support skill improvement with newly designed renewal programme: cluster randomised study of small-group-discussion method versus practice-while-watching method.

    Science.gov (United States)

    Na, Ji Ung; Lee, Tae Rim; Kang, Mun Ju; Shin, Tae Gun; Sim, Min Seob; Jo, Ik Joon; Song, Keun Jeong; Jeong, Yeon Kwon

    2014-12-01

    For the basic life support (BLS) renewal course, we have devised a new educational programme entitled a small-group-discussion (SGD) programme using personalised video-based debriefing. We compared the efficacy in BLS skill improvement of the SGD programme with the currently used practice-while-watching (PWW) programme, which uses a standardised education video. This was a prospective, cluster randomised study, conducted in a single centre, over 6 months from May 2009 to October 2009. Training was performed in two groups of participants, each group with a different renewal education programme. The efficacy of the programmes was compared using the modified Cardiff test and skill-reporting manikins. Results from 2169 participants were analysed: 1061 in the SGD programme group and 1108 in the PWW programme group. There were no differences between groups on the pretest, either in compression or non-compression skills. However, on the post-test, the SGD programme gave better results for both compression skills and non-compression skills. The new SGD renewal programme is more effective than the PWW programme for improving skills in BLS renewal training. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

  7. A Randomized Controlled Trial to Decrease Job Burnout in First-Year Internal Medicine Residents Using a Facilitated Discussion Group Intervention.

    Science.gov (United States)

    Ripp, Jonathan A; Fallar, Robert; Korenstein, Deborah

    2016-05-01

    Background Burnout is common in internal medicine (IM) trainees and is associated with depression and suboptimal patient care. Facilitated group discussion reduces burnout among practicing clinicians. Objective We hypothesized that this type of intervention would reduce incident burnout among first-year IM residents. Methods Between June 2013 and May 2014, participants from a convenience sample of 51 incoming IM residents were randomly assigned (in groups of 3) to the intervention or a control. Twice-monthly theme-based discussion sessions (18 total) led by expert facilitators were held for intervention groups. Surveys were administered at study onset and completion. Demographic and personal characteristics were collected. Burnout and burnout domains were the primary outcomes. Following convention, we defined burnout as a high emotional exhaustion or depersonalization score on the Maslach Burnout Inventory. Results All 51 eligible residents participated; 39 (76%) completed both surveys. Initial burnout prevalence (10 of 21 [48%] versus 7 of 17 [41%], P = .69), incidence of burnout at year end (9 of 11 [82%] versus 5 of 10 [50%], P = .18), and secondary outcomes were similar in intervention and control arms. More residents in the intervention group had high year-end depersonalization scores (18 of 21 [86%] versus 9 of 17 [53%], P = .04). Many intervention residents revealed that sessions did not truly free them from clinical or educational responsibilities. Conclusions A facilitated group discussion intervention did not decrease burnout in resident physicians. Future discussion-based interventions for reducing resident burnout should be voluntary and effectively free participants from clinical duties.

  8. Plant species richness, identity and productivity differentially influence key groups of microbes in grassland soils of contrasting fertility

    NARCIS (Netherlands)

    De Deyn, G.B.; Quirk, H.; Bardgett, R.D.

    2011-01-01

    The abundance of microbes in soil is thought to be strongly influenced by plant productivity rather than by plant species richness per se. However, whether this holds true for different microbial groups and under different soil conditions is unresolved. We tested how plant species richness, identity

  9. Plant species richness, identity and productivity differentially influence key groups of microbes in grassland soils of contrasting fertility.

    NARCIS (Netherlands)

    Deyn, de G.B.; Quirk, H.; Bardgett, R.D.

    2011-01-01

    The abundance of microbes in soil is thought to be strongly influenced by plant productivity rather than by plant species richness per se. However, whether this holds true for different microbial groups and under different soil conditions is unresolved. We tested how plant species richness, identity

  10. Enacting Key Skills-Based Curricula in Secondary Education: Lessons from a Technology-Mediated, Group-Based Learning Initiative

    Science.gov (United States)

    Johnston, Keith; Conneely, Claire; Murchan, Damian; Tangney, Brendan

    2015-01-01

    Bridge21 is an innovative approach to learning for secondary education that was originally conceptualised as part of a social outreach intervention in the authors' third-level institution whereby participants attended workshops at a dedicated learning space on campus focusing on a particular model of technology-mediated group-based learning. This…

  11. Physician executive promotes process for managing change. Building consensus for group plan is key to successful transitions.

    Science.gov (United States)

    Carrigan, V M

    2001-01-01

    Thrust into a leadership position after years in solo practice demanded quick thinking for one physician executive. Faced with a need for change, he developed his own process for turning an individual's idea into a plan of action for an entire group. Learn the steps he took to build consensus and ease resistance to change.

  12. 基于CBT组播路由协议的组密钥管理协议分析与改进%Analyses and Improvement on Group Key Management Protocol Based on CBT Multicast Routing Protocol

    Institute of Scientific and Technical Information of China (English)

    张斌; 邬江兴

    2001-01-01

    In RFC1949,A. Ballardie proposed a method of scalable multicast key distribution based on the Core Based Tree multicast protocol fitting for wide-area IP multicasting. This paper analyses the method deeply,points out that the model can't resist the key compromise of a single member effectively,and proposes two kinds of improvement. One is the distributed generating and distributing group data encryption key,the other one is partitioning the group into subgroups. These improvements can increase the security and lifetime of the group key,and decrease the loss of compromise of a single group key encryption key.

  13. The Increased of Activity and Content Reading Understanding Ability Through Problem Based Learning in Technique Discussion Group-Peningkatan Aktivitas dan Kemampuan Memahami Isi Bacaan Melalui Pembelajaran Berbasis Masalah dengan Teknik Diskusi Kelompok

    Directory of Open Access Journals (Sweden)

    Yakobus Paluru

    2015-02-01

    Full Text Available Abstract: The purpose of this research is to improve students’ learning activities and the ability to understand the information in the text. The results showed that the ability to understand written information students has increased after gaining experience learning through problem-based strategy with group discussion techniques. The increase is due to the emergence of motivation and the interest of students who constructed through problem-based learning strategies with group discussion techniques. The increase in activity caused by the adjustment of learning to students’ needs related to the topic of reading materials used in teaching and habits and learning styles that is performed by the students.Key Words: learning, the content of text, group discussion Abstrak: Penelitian ini bertujuan untuk meningkatkan aktivitas belajar dan kemampuan siswa dalam memahami informasi yang ada dalam bacaan. Hasil penelitian menunjukkan bahwa kemampuan memahami informasi tertulis siswa telah meningkat setelah mendapatkan pengalaman belajar melalui strategi berbasis masalah dengan teknik diskusi kelompok. Terjadinya peningkatan aktivitas disebabkan munculnya motivasi dan minat siswa yang dibangun melalui strategi pembelajaran berbasis masalah dengan teknik diskusi kelompok. Peningkatan aktivitas disebabkan adanya penyesuaian pembelajaran dengan kebutuhan siswa yang berkaitan dengan topik materi bacaan yang digunakan dalam pembelajaran dan kebiasaan serta gaya belajar yang dilakukan oleh siswa.Kata kunci: pembelajaran, isi bacaan, diskusi kelompok

  14. Performance Analysis of Hierarchical Group Key Management Integrated with Adaptive Intrusion Detection in Mobile ad hoc Networks

    Science.gov (United States)

    2016-04-05

    applications in wireless networks such as military battlefields, emergency response, mobile commerce , online gaming, and collaborative work are based on the...represents that important data are compromised. The second condition represents that the mobile group is unable to function correctly and is compromised as a...include mobile computing, wireless systems, dependable and secure computing, multimedia, sensor networks, data and service management, trust management

  15. Perceived discrimination in U.S. healthcare: Charting the effects of key social characteristics within and across racial groups

    Directory of Open Access Journals (Sweden)

    Corey M. Abramson

    2015-01-01

    Full Text Available This article employs an original empirical analysis to contribute to scientific understandings of the relationship between social characteristics and perceptions of discrimination in healthcare encounters within and across racial categories in the U.S. Our analysis focuses on a diverse sample of 43,020 adults aged 18 to 85 drawn from the California Health Interview Survey (CHIS. We use a series of weighted descriptive statistics and logistic regression models to parse out factors associated with perceived discrimination and chart how they vary by race and ethnicity. Members of racial minorities were more likely to report perceptions of discrimination, and while the effect was somewhat mitigated by introducing patient and health-care system factors into our models, the race effects remained both statistically significant and of substantial magnitude (particularly for African Americans and Native Americans. Poor self-reported health and communication difficulties in the clinical encounter were associated with increased perceptions of discrimination across all groups. Further, among non-whites, increased education was associated with increased perceptions of discrimination net of other factors. These findings suggest efforts to reduce disparities in medical care should continue to focus on expanding the depth and quality of patient–provider interactions for disadvantaged racial groups, while also being attentive to other factors that affect perceived racial discrimination in healthcare encounters within and across racial groups.

  16. Implementation status of self-assessment/peer-group discussion program: a bottom-up approach of monitoring/supervision in improving quality of health services.

    Science.gov (United States)

    Kafle, K K; Bhuju, G B; Karkee, S B; Prasad, R R; Shrestha, N; Shrestha, A D; Das, P L; Chataut, B D; Shrestha, A; Suvedi, B K

    2014-01-01

    Monitoring/supervision is an essential component for improving the quality of health services including rational use of medicines. A new bottom-up approach of monitoring/supervision consisting of self-assessment/ peer-group discussion was found to be effective in improving prescribing practices. The new strategy significantly improved the prescribing practices based on standard treatment guidelines. The government has implemented it as a Program in primary health care services of Nepal. This article aims to share the implementation status of the self-assessment/peer-group discussion Program for improving the prescribing practices of common health problems and availability of drugs in the district health system. Concurrent mixed research design was applied for data collection. The data were collected at different levels of health care system using in-depth interviews, participatory observations and documentary analysis. The Management Division, Department of Health Services implemented the Program in 2009-10 and the PHC Revitalization Division, DoHs is the implementation division since 2010-11. The Program comprised revision of participant's and trainer's manuals, training of trainers and prescribers, finalisation of health conditions and indicators, distribution of carbon copy prescription pads, and conduction of peer-group discussions.The Program was implemented in number of districts. The government made the policy decision to implement the Program for monitoring prescribing practices and the availability of free drugs in districts. However, it has covered only few districts and needs escalation to cover all 75 districts of the country.

  17. The Influence of Setting on Findings Produced in Qualitative Health Research: A Comparison between Face-to-Face and Online Discussion Groups about HIV/AIDS

    Directory of Open Access Journals (Sweden)

    Guendalina Graffigna

    2006-09-01

    Full Text Available The authors focus their analysis in this article on online focus groups (FGs, in an attempt to describe how the setting shapes the conversational features of the discussion and influences data construction. Starting from a review of current dominant viewpoints, they compare face-to-face discussion groups with different formats of online FGs about AIDS, from a discourse analysis perspective. They conducted 2 face-to-face FGs, 2 chats, 2 forums, and 2 forums+plus+chat involving 64 participants aged 18 to 25 and living in Italy. Their findings seem not only to confirm the hypothesis of a general difference between a face-to-face discussion setting and an Internet-mediated one but also reveal differences among the forms of online FG, in terms of both the thematic articulation of discourse and the conversational and relational characteristics of group exchange, suggesting that exchanges on HIV/AIDS are characterized by the setting. This characterization seems to be important for situating the choice of tool, according to research objectives, and for better defining the technical aspects of the research project.

  18. Conformational differences between the methoxy groups of QA and QB site ubisemiquinones in bacterial reaction centers: a key role for methoxy group orientation in modulating ubiquinone redox potential.

    Science.gov (United States)

    Taguchi, Alexander T; O'Malley, Patrick J; Wraight, Colin A; Dikanov, Sergei A

    2013-07-09

    Ubiquinone is an almost universal, membrane-associated redox mediator. Its ability to accept either one or two electrons allows it to function in critical roles in biological electron transport. The redox properties of ubiquinone in vivo are determined by its environment in the binding sites of proteins and by the dihedral angle of each methoxy group relative to the ring plane. This is an attribute unique to ubiquinone among natural quinones and could account for its widespread function with many different redox complexes. In this work, we use the photosynthetic reaction center as a model system for understanding the role of methoxy conformations in determining the redox potential of the ubiquinone/semiquinone couple. Despite the abundance of X-ray crystal structures for the reaction center, quinone site resolution has thus far been too low to provide a reliable measure of the methoxy dihedral angles of the primary and secondary quinones, QA and QB. We performed 2D ESEEM (HYSCORE) on isolated reaction centers with ubiquinones (13)C-labeled at the headgroup methyl and methoxy substituents, and have measured the (13)C isotropic and anisotropic components of the hyperfine tensors. Hyperfine couplings were compared to those derived by DFT calculations as a function of methoxy torsional angle allowing estimation of the methoxy dihedral angles for the semiquinones in the QA and QB sites. Based on this analysis, the orientation of the 2-methoxy groups are distinct in the two sites, with QB more out of plane by 20-25°. This corresponds to an ≈50 meV larger electron affinity for the QB quinone, indicating a substantial contribution to the experimental difference in redox potentials (60-75 mV) of the two quinones. The methods developed here can be readily extended to ubiquinone-binding sites in other protein complexes.

  19. Conformational differences between the methoxy groups of QA and QB site ubisemiquinones in bacterial reaction centers: a key role for methoxy group orientation in modulating ubiquinone redox potential†

    Science.gov (United States)

    Taguchi, Alexander T.; O'Malley, Patrick J.; Wraight, Colin A.; Dikanov, Sergei A.

    2013-01-01

    Ubiquinone is an almost universal, membrane-associated redox mediator. Its ability to accept either one or two electrons allows it to function in critical roles in biological electron transport. The redox properties of ubiquinone in vivo are determined by its environment in the binding sites of proteins and by the dihedral angle of each methoxy group relative to the ring plane. This is an attribute unique to ubiquinone among natural quinones and could account for its widespread function with many different redox complexes. In this work, we use the photosynthetic reaction center as a model system for understanding the role of methoxy conformations in determining the redox potential of the ubiquinone/semiquinone couple. Despite the abundance of X-ray crystal structures for the reaction center, quinone site resolution has thus far been too low to provide a reliable measure of the methoxy dihedral angles of the primary and secondary quinones, QA and QB. We performed 2D ESEEM (HYSCORE) on isolated reaction centers with ubiquinones 13C-labeled at the headgroup methyl and methoxy substituents, and have measured the 13C isotropic and anisotropic components of the hyperfine tensors. Hyperfine couplings were compared to those derived by DFT calculations as a function of methoxy torsional angle allowing estimation of the methoxy dihedral angles for the semiquinones in the QA and QB sites. Based on this analysis, the orientation of the 2-methoxy groups are distinct in the two sites, with QB more out of plane by 20-30°. This corresponds to an ≈50 meV larger electron affinity for the QB quinone, indicating a substantial contribution to the experimental difference in redox potentials (60-75 mV) of the two quinones. The methods developed here can be readily extended to ubiquinone-binding sites in other protein complexes. PMID:23745576

  20. Clave de las especies de Conoderus Grupo II (Coleoptera: Elateridae Key of the species of Conoderus Group II (Coleoptera: Elateridae

    Directory of Open Access Journals (Sweden)

    Marta E. Guzmán De Tomé

    2005-12-01

    Full Text Available RESUMEN: Se presenta una reseña histórica, diagnosis y clave de identificación de 33 especies exclusivamente neotropicales, del género Conoderus Eschscholtz 1829 Grupo II, (Coleoptera, Elateridae proporcionando, datos de su distribución e ilustraciones de cuatro especies representativas de la región.ABSTRACT. An identification of 33 species of Conoderus Group II, Eschscholtz 1829 (Coleoptera, Elateridae with full diagnosis, distribution, with representative illustrations of four species of the neotropical region.

  1. Frontalunterricht oder interaktive Gruppenarbeit? Ein Vergleich des Lernerfolgs und der studentischen Evaluation für das Fach Biochemie [Didactic lecture or interactive group discussion? A comparison of the learning success and the student evaluation in biochemistry

    National Research Council Canada - National Science Library

    Kadmon, Martina; Harter, Cordula; Schellberg, Dieter; Möltner, Andreas

    2009-01-01

    ...: A total of 421 second-year students were randomized into two groups: The control group was taught in a traditional lecture-like format, whereas the study group dealt with the same topic in an interactive group discussion...

  2. Barriers to Eating Traditional Foods Vary by Age Group in Ecuador With Biodiversity Loss as a Key Issue.

    Science.gov (United States)

    Penafiel, Daniela; Termote, Celine; Lachat, Carl; Espinel, Ramon; Kolsteren, Patrick; Van Damme, Patrick

    2016-04-01

    To document the perceptions of indigenous peoples for the sustainable management of natural resources against malnutrition. Initially 4 and then 12 interviews were conducted with 4 different age groups. Eight rural villages in Guasaganda, central Ecuador, were studied in 2011-2012. A total of 75 people (22 children, 18 adolescents, 20 adults, and 15 elders). Benefits, severity, susceptibility, barriers, cues to action, and self-efficacy of eating traditional foods. Qualitative content analysis was completed using NVivo software. Initial analysis was inductive, followed by a content analysis directed by the Health Belief Model. Coding was completed independently by 2 researchers and kappa statistics (κ ≥ 0.65) were used to evaluate agreement. Healthy perceptions toward traditional foods existed and differed by age. Local young people ate traditional foods for their health benefits and good taste; adults cultivated traditional foods that had an economic benefit. Traditional knowledge used for consumption and cultivation of traditional foods was present but needs to be disseminated. Nutrition education in schools is needed that supports traditional knowledge in younger groups and prevents dietary changes toward unhealthy eating. Increased production of traditional food is needed to address current economic realities. Copyright © 2016 Society for Nutrition Education and Behavior. Published by Elsevier Inc. All rights reserved.

  3. 浅谈中国的团购网站及其发展%Discussion on the situation and development of group-buying websites in china

    Institute of Scientific and Technical Information of China (English)

    左倪娜

    2011-01-01

    In recent years, group-buying websites have sprung up like bamboo shoots after a spring shower. Group-buying has a great influence on people' s life and become a hot issue on our daily life. This paper analyzed and discussed the current situation of group-buying websites of China, the existing problem and its development perspective.%近年来,团购网站犹如雨后春笋不断涌现,“团购”活动影响着人们生活,成为人们关注和讨论的热点问题。文章对中国团购网站的现状、存在的问题以及团购网站的发展前景进行分析和探讨。

  4. The role of support groups in facilitating families in coping with a genetic condition and in discussion of genetic risk information.

    Science.gov (United States)

    Plumridge, Gillian; Metcalfe, Alison; Coad, Jane; Gill, Paramjit

    2012-09-01

      Giving children and young people information about genetic conditions and associated risk has been shown to be important to their identity, coping and decision making. Parents, however, find talking to their children difficult, and support from health professionals is often not available to them.   To explore the role of support groups in family coping, and in assisting parents' communication about risk with children in families affected by an inherited genetic condition.   Semi-structured interviews analysed using grounded theory and informed by models focusing on aspects of family communication.   Affected and unaffected children and their parents, from families affected by one of six genetic conditions, that represent different patterns of inheritance, and variations in age of onset, life expectancy and impact on families.   Parents often sought support they did not receive elsewhere from support groups. They identified benefits, but also potential disadvantages to this involvement. These related to the specific condition and also whether groups were run solely by parents or had professional input. Support groups rarely helped directly with family communication, but attendance often stimulated family discussion, and they provided information that improved parents' confidence in discussing the condition.   Support groups should be seen only as additional to the support offered by health and social care professionals. An increased understanding of the role of support groups in assisting families with genetic conditions has been highlighted, but further work is needed to explore more fully how this may be made more sustainable and far-reaching. © 2011 Blackwell Publishing Ltd.

  5. Improved one-way hash chain and revocation polynomial-based self-healing group key distribution schemes in resource-constrained wireless networks.

    Science.gov (United States)

    Chen, Huifang; Xie, Lei

    2014-12-18

    Self-healing group key distribution (SGKD) aims to deal with the key distribution problem over an unreliable wireless network. In this paper, we investigate the SGKD issue in resource-constrained wireless networks. We propose two improved SGKD schemes using the one-way hash chain (OHC) and the revocation polynomial (RP), the OHC&RP-SGKD schemes. In the proposed OHC&RP-SGKD schemes, by introducing the unique session identifier and binding the joining time with the capability of recovering previous session keys, the problem of the collusion attack between revoked users and new joined users in existing hash chain-based SGKD schemes is resolved. Moreover, novel methods for utilizing the one-way hash chain and constructing the personal secret, the revocation polynomial and the key updating broadcast packet are presented. Hence, the proposed OHC&RP-SGKD schemes eliminate the limitation of the maximum allowed number of revoked users on the maximum allowed number of sessions, increase the maximum allowed number of revoked/colluding users, and reduce the redundancy in the key updating broadcast packet. Performance analysis and simulation results show that the proposed OHC&RP-SGKD schemes are practical for resource-constrained wireless networks in bad environments, where a strong collusion attack resistance is required and many users could be revoked.

  6. Improved One-Way Hash Chain and Revocation Polynomial-Based Self-Healing Group Key Distribution Schemes in Resource-Constrained Wireless Networks

    Directory of Open Access Journals (Sweden)

    Huifang Chen

    2014-12-01

    Full Text Available Self-healing group key distribution (SGKD aims to deal with the key distribution problem over an unreliable wireless network. In this paper, we investigate the SGKD issue in resource-constrained wireless networks. We propose two improved SGKD schemes using the one-way hash chain (OHC and the revocation polynomial (RP, the OHC&RP-SGKD schemes. In the proposed OHC&RP-SGKD schemes, by introducing the unique session identifier and binding the joining time with the capability of recovering previous session keys, the problem of the collusion attack between revoked users and new joined users in existing hash chain-based SGKD schemes is resolved. Moreover, novel methods for utilizing the one-way hash chain and constructing the personal secret, the revocation polynomial and the key updating broadcast packet are presented. Hence, the proposed OHC&RP-SGKD schemes eliminate the limitation of the maximum allowed number of revoked users on the maximum allowed number of sessions, increase the maximum allowed number of revoked/colluding users, and reduce the redundancy in the key updating broadcast packet. Performance analysis and simulation results show that the proposed OHC&RP-SGKD schemes are practical for resource-constrained wireless networks in bad environments, where a strong collusion attack resistance is required and many users could be revoked.

  7. Two new species of Simulium (Gomphostilbia) (Diptera: Simuliidae) from Cameron's Highlands, Peninsular Malaysia, with keys to 21 species of the Simulium asakoae species-group.

    Science.gov (United States)

    Takaoka, H; Sofian-Azirun, M; Ya'cob, Z; Hashim, R

    2014-02-14

    Two new black fly species, Simulium (Gomphostilbia) brinchangense and S. (G.) tanahrataense, are described on the basis of reared adult females, males, pupae and larvae from Cameron's Highlands, Peninsular Malaysia. These new species are assigned to the asakoae species-group within Simulium (Gomphostilbia) and taxonomic notes are given to distinguish each new species from six known species in Malaysia. Revised keys to identify all 21 species including 13 species from other countries are provided for females, males, pupae and mature larvae. The species diversity of the asakoae species-group in Cameron's Highlands is briefly noted.

  8. How will ocean acidification affect Baltic sea ecosystems? an assessment of plausible impacts on key functional groups.

    Science.gov (United States)

    Havenhand, Jonathan N

    2012-09-01

    Increasing partial pressure of atmospheric CO₂ is causing ocean pH to fall-a process known as 'ocean acidification'. Scenario modeling suggests that ocean acidification in the Baltic Sea may cause a ≤ 3 times increase in acidity (reduction of 0.2-0.4 pH units) by the year 2100. The responses of most Baltic Sea organisms to ocean acidification are poorly understood. Available data suggest that most species and ecologically important groups in the Baltic Sea food web (phytoplankton, zooplankton, macrozoobenthos, cod and sprat) will be robust to the expected changes in pH. These conclusions come from (mostly) single-species and single-factor studies. Determining the emergent effects of ocean acidification on the ecosystem from such studies is problematic, yet very few studies have used multiple stressors and/or multiple trophic levels. There is an urgent need for more data from Baltic Sea populations, particularly from environmentally diverse regions and from controlled mesocosm experiments. In the absence of such information it is difficult to envision the likely effects of future ocean acidification on Baltic Sea species and ecosystems.

  9. SET DOMAIN GROUP701 encodes a H3K4-methytransferase and regulates multiple key processes of rice plant development.

    Science.gov (United States)

    Liu, Kunpeng; Yu, Yu; Dong, Aiwu; Shen, Wen-Hui

    2017-07-01

    Chromatin-based epigenetic information plays an important role in developmental gene regulation, in response to environment, and in natural variation of gene expression levels. Histone H3 lysine 4 di/trimethylation (H3K4me2/3) is abundant in euchromatin and is generally associated with transcriptional activation. Strikingly, however, enzymes catalyzing H3K4me2/3 remain poorly characterized in crops so far. Here, we investigated the function of the rice SET DOMAIN GROUP 701 (SDG701) gene by molecular and biochemical characterization of the gene product, and by studying effects of its loss or gain of function on plant growth and development. We demonstrated that SDG701 encodes a methytransferase specifically catalyzing H3K4 methylation. Overexpression and knockdown experiments showed that SDG701 is crucial for proper sporophytic plant development as well as for gametophytic transmission that directly impacts rice grain production. In-depth analysis of plant flowering time revealed that SDG701 promotes rice flowering under either long-day or short-day photoperiods. Consistently, the SDG701 protein was found to bind chromatin to promote H3K4me3 and to enhance expression of the rice Hd3a and RFT1 florigens. Collectively, our results establish SDG701 as a major rice H3K4-specific methyltransferase and provide important insights into function of H3K4me3 deposition in transcription activation of florigens in promoting plant flowering. © 2017 The Authors. New Phytologist © 2017 New Phytologist Trust.

  10. Discussion on ideas of interdisciplinary construction based on state key laboratory%基于国家重点实验室交叉学科建设思路的探讨

    Institute of Scientific and Technical Information of China (English)

    黄燕; 封烨

    2016-01-01

    The state key laboratory is an important part of the national innovation system and discipline construction.This paper,taking the state key laboratory as an entry point,discusses the current situation and problems of interdisciplinary construction in terms of organizational structure,research team building and laboratory management mechanisms,and proposes corresponding development strategies.%以国家重点实验室为切入点,从交叉学科组织结构、研究团队建设和实验室管理机制等方面论述了国家重点实验室交叉学科建设的现状及存在的问题,并提出了相应的发展策略。

  11. Discuss on the Operation Mode of Group Purchase Websites in our country%我国团购网站的运营模式探讨

    Institute of Scientific and Technical Information of China (English)

    李向红

    2012-01-01

    互联网技术的快速发展,催生了许多新的电子商务运营模式,团购网站的兴起,OTO的普及,使得网上团购成为时下最流行的购物方式,团购网站带给消费者更低的价格,更自由、更个性化的商品或服务,大量的消费者喜爱团购也给商家和团购网站带来了极大的名气和快速增长的销量,但网络团购异常繁荣的背后也隐藏着若干问题。本文探讨我国团购网站的运营模式,分析目前存在的问题,并提出解决问题的建议对策。%The rapid development of Internet technology,has spawned a lot of new e-commerce operation mode,group purchase websites arisen,the popularity of OTO,making online group purchase became the most popular way of shopping,group purchase websites bring lower prices,more free and more personalized commodity or service for consumers,many consumers'group purchase has also brought great fame and the rapid growth of sales for merchants and group purchase websites,but the network group purchase abnormal prosperous backside hidden problems.This paper discusses group purchase websites operating mode in our country,the analysis of the existing problems,and put forward suggestions and countermeasures to solve the problems.

  12. Why aren't women choosing STEM academic jobs? Observations from a small-group discussion at the 2016 American Society for Microbiology annual meeting.

    Science.gov (United States)

    Adamowicz, Elizabeth M

    2017-03-01

    This commentary summarizes a small-group discussion that recently occurred at the American Society for Microbiology annual general meeting, ASM Microbe, in Boston, Massachusetts, on 16-20 June 2016, on the topic 'why are so few women choosing to become academics?' Specifically, the discussion focused on asking what the actual and perceived barriers to academic STEM careers women face, and possible solutions to address them which would make women more likely to seek out academic careers. The conclusions reached suggest that, despite improvement in recent years, women and minorities still face complex barriers to STEM academic careers, and further research is needed to determine the best solutions to this problem. © FEMS 2017. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  13. Patient-based outcome analysis is important to determine the success of total knee arthroplasty: result of a focus group discussion

    Directory of Open Access Journals (Sweden)

    Zacharia B

    2016-05-01

    Full Text Available Balaji Zacharia, Manu Paul, Mohammed Thanveeruddin Sherule Department of Orthopedics, Government Medical College, Kozhikode, Kerala, India Background: Total knee replacement (TKR results in an excellent outcome in terms of pain relief. The reporting of outcomes was traditionally focused on implant survivorship and objective outcomes such as range of motion, knee stability, and radiographic alignment. However, patients and doctors had differing perceptions of all domains of outcome, especially subjective quality of life domains such as emotions and social functioning. In this study, we tried to find out the expectations of Indian patients regarding TKR and assess the level of satisfaction among our patients from their view point using focus group discussion (FGD, and whether these expectations have an impact on outcomes and patient satisfaction. Materials and methods: This study was conducted in the Department of Orthopedics, Government Medical College, Kozhikode, Kerala, India, in November 2014. Patients between the ages 60 and 65 years who met inclusion criteria were selected. A total of 50 patients were selected for FGDs. Among them, 42 patients participated in FGD. The remaining eight did not appear for the discussion. A total of four FGD sessions were conducted. Results and discussion: It was found that there is a discrepancy between the satisfaction levels of patient and surgeon. There is a difference in satisfaction level achieved depending on socioeconomic, geographic, and cultural characteristics. Conclusion: Newer methods of TKR outcome assessment combining radiological outcome, surgeon-based assessment, and patient satisfaction based on their socioeconomic status and cultural characteristics should be developed for different populations. Keywords: focus group discussion, total knee arthroplasty, patient-specific objectives

  14. Fall risk awareness and safety precautions taken by older community-dwelling women and men--a qualitative study using focus group discussions.

    Directory of Open Access Journals (Sweden)

    Petra Pohl

    Full Text Available Daily life requires frequent estimations of the risk of falling and the ability to avoid a fall. The objective of this study was to explore older women's and men's understanding of fall risk and their experiences with safety precautions taken to prevent falls.A qualitative study with focus group discussions was conducted. Eighteen community-dwelling people [10 women and 8 men] with and without a history of falls were purposively recruited. Participants were divided into two groups, and each group met four times. A participatory and appreciative action and reflection approach was used to guide the discussions. All discussions were audio recorded and transcribed verbatim. Data were analysed by qualitative content analysis, and categories were determined inductively.Three categories describing the process of becoming aware of fall risks in everyday life were identified: 1] Facing various feelings, 2] Recognizing one's fall risk, and 3] Taking precautions. Each category comprised several subcategories. The comprehensive theme derived from the categories was "Safety precautions through fall risk awareness". Three strategies of ignoring [continuing a risky activity], gaining insight [realizing the danger in a certain situation], and anticipating [thinking ahead and acting in advance] were related to all choices of actions and could fluctuate in the same person in different contexts.The fall risk awareness process might be initiated for various reasons and can involve different feelings and precautions as well as different strategies. This finding highlights that there are many possible channels to reach older people with information about fall risk and fall prevention, including the media and their peers. The findings offer a deeper understanding of older peoples' conceptualizations about fall risk awareness and make an important contribution to the development and implementation of fall prevention programmes.

  15. Natural resources as an area of protection in LCA - outcomes of the discussion by the working group on resources within the UNEP-SETAC Life Cycle Initiative

    DEFF Research Database (Denmark)

    Sonderegger, T.; Fantke, Peter; Dewulf, J.

    2016-01-01

    The topic of resources as an area of protection (AoP) in life cycle assessment (LCA) is being discussed within an expert group under the umbrella of the Life Cycle Initiative by the United Nations Environment Programme (UNEP) and the Society for Environmental Toxicology and Chemistry (SETAC......). The AoP ‘Natural Resources’ is neither well defined nor agreed upon. Furthermore, there is currently no life cycle impact assessment (LCIA) method available that is able to consist ently assess impacts at midpoint and endpoint level across different resource categories (minerals/metals and fossil fuels...

  16. Discussion on Application of Hydroxyl Group Control to Special Glass Production%浅析-OH控制在特种玻璃生产中的应用

    Institute of Scientific and Technical Information of China (English)

    陈发伟

    2012-01-01

    主要介绍了玻璃中羟基含量对玻璃性能的影响,以及高档电子玻璃生产中羟基控制的重要意义,同时分析了空气助燃的窑炉和纯氧窖炉中影响玻璃液羟基含量的因素,并综述了实际生产中调整玻璃液中羟基含量的重要手段。%The effect of hydroxyl group content on glass performance and the significance of hydroxyl group control for production of high grade electronic glass were discussed in details. The influence factors of hydroxyl concentration in glass melt in both air and pure-oxygen combustion furnaces were analyzed The important measures in practical production for controlling hydroxyl concentration in glass melt were reviewed.

  17. ClimateQUAL® and Thinklets: Using ClimateQUAL® with Group Support Systems to Facilitate Discussion and Set Priorities for Organizational Change at Criss Library

    Directory of Open Access Journals (Sweden)

    Nora Hillyer

    2013-06-01

    Full Text Available Objective – This article discusses a series of actions taken by the Criss Library at the University of Nebraska at Omaha to implement organizational change, using the ClimateQUAL® survey and facilitated discussions with ThinkTank™ group decision software. The library had experienced significant changes over a five-year period, with a renovation of the facility and three reorganizations resulting in a 50% staff turnover. Recognizing the strain that years of construction and personnel changes had placed on the organization, there was a desire to uncover the mood of the employees and reveal the issues behind low morale, uneasiness, and fear.Methods – In November 2009, the library conducted a ClimateQUAL® survey to develop a baseline to assess the effectiveness of any changes. After the results were distributed to library faculty and staff, a series of two-hour facilitated discussions was held to gather opinions and ideas for solutions using thinkLets, a pattern language for reasoning toward a goal. The group support system ThinkTank™ software was loaded onto computers, and employees were able to add their ideas anonymously during the sessions. Finally, 12 employees (29% completed a four-question survey on their perceptions of the facilitated discussions.Results – The facilitated discussions returned 76 sub-themes in 12 categories: staffing and scheduling issues, staff unity/teamwork, communication, goodwill/morale, accountability, decision-making, policy issues, skills and training, leadership, ergonomics/physical work environment, respect, and bullying. An advisory team culled the 76 sub-themes into 40 improvement strategies. Five were implemented immediately, and the remaining 35 were scheduled to be presented to the faculty and staff via an online survey. Participants’ perceptions of the facilitated discussions were mixed. Eighty-three percent of respondents reported that they did not feel safe speaking out about issues, most

  18. Focusing on SSI's risk and radiation protection criteria. A report based on discussions in focus groups in Oesthammar and Oskarshamn municipalities

    Energy Technology Data Exchange (ETDEWEB)

    Drottz-Sjoeberg, Britt-Marie [BMD Research (Sweden)

    2003-11-01

    The project was a result of the authority's continued work on the 1998 regulations on protection of human health and the environment in final disposal of spent nuclear fuel and nuclear waste. The idea behind the project, to involve persons from the municipalities participating in SKB's site selection investigation in focus group discussions, was that the questions and points of views that emerged in the discussions could serve as a basis for the authority's work of producing general guidelines associated with the regulations. The finished report would then be handed over to an expert group at the authority which answered or commented on the issues raised, and made a report on this to the participating municipalities Oskarshamn and Oesthammar. The result of discussions in two focus groups in Oskarshamn municipality and two in Oesthammar municipality in October 2002 is presented here, together with a presentation of the project's purpose and organisation. The results are presented in three main sections. The first concentrates on radiation and radioactivity since the task in the discussion groups was to attempt to clarify the issues and problems observed in this area in order to contribute to the authority's work of developing the general guidelines. The second section, on understanding of concepts, measurement, risk and safety, illustrates that the frequently asked and 'simple' knowledge related questions are only the tip of the iceberg where many of the participants have also thought about the more complex contexts and the fundamental problems in the risk and safety analysis, its validity and use. The third section of the report focuses primarily on content and information aspects. It provides a number of ideas about how information on current problems and important issues can be improved, how knowledge can be deepened in the site selection municipalities and how working methods in the process can be developed. The report mainly

  19. Evaluation of factors influencing on non-exclusive breast feeding during the first six months of life in Bushehr Port using focus group discussion

    Directory of Open Access Journals (Sweden)

    Sherafat Akaberian

    2004-02-01

    Full Text Available Non-exclusive breast feeding in the early years of life is one of the most important factors in growth and development of infants. Therefore, exclusive breast feeding is recommended during the first six months of life. For determining the effective factors of non-exclusive breast feeding during the first six months of life, we used focus group discussion by participation of 60 mothers who had an infant under 6 months age and enjoyed non-exclusive breast feeding. Mothers divided into eight groups considering their occupation and number of child. All groups reported scanty of mother’s milk, mother’s occupation, mother’s illness, mother’s comfort, wrong beliefs, infant’s illness, doctors and health care providers recommendations, infant’s dependency to feeding bottle and pacifiers as the most frequent factors in using nonexclusive breast feeding. All mothers believed that health care centers, relatives and older members of family, books and pamphlets, mass media, physicians were their effective sources of awareness and promotion of exclusive breast feeding. Considering the presented ideas in all groups, it is realized that mothers during their pregnancy have sparse information about exclusive breast feeding and because of lack of enough essential training, some socio – cultural beliefs affects non-exclusive breast feeding. Mass media and especial training programs should be implemented to promote exclusive breast feeding in Bushehr Port.

  20. An exploration of computer-simulated evolution and small group discussion on pre-service science teachers' perceptions of evolutionary concepts

    Science.gov (United States)

    MacDonald, Ronald Douglas

    The primary goal of this study was to explore how the use of a computer simulation of basic evolutionary processes, in combination with small-group discussions, affected Intermediate/Senior pre-service science teachers' perspectives of basic evolutionary concepts. Qualitative and quantitative methods were used in a case study approach with 19 pre-service Intermediate/Senior science teachers at an Ontario university. Several sub-goals were explored. The first sub-goal was to assess Intermediate/Senior pre-service science teachers' current conceptions of evolution. The results indicated that approximately two-thirds of the participants had a poor understanding of basic evolutionary concepts, with only 2 of the 19 participants demonstrating a strong comprehension. These results were found to be very similar to comparable samples of subjects from other research. The second sub-goal was to explore the relationships among Intermediate/Senior pre-service science teachers' understanding of contemporary evolutionary concepts, their perspectives of the nature of science, and their intentions to teach evolutionary concepts in the classroom. Participants' knowledge of evolutionary concepts was found to be associated strongly with their intentions to teach evolution by natural selection (r = .42). However, knowledge of evolutionary concepts was not found to be associated with any particular science epistemology perspective. The third sub-goal was to analyze and to interpret the small-group discussions as members interacted with the simulation. The simulation was found to be highly engaging and a very effective method of encouraging participants to speculate, question, discuss and learn about important evolutionary concepts. Analyses of the discussions revealed that the simulation evoked a wide array of correct conceptions as well as misconceptions. The fourth sub-goal was to assess the extent to which creating a lesson plan on the topic of natural selection could affect

  1. Perceptions of an ideal point-of-care test for sexually transmitted infections--a qualitative study of focus group discussions with medical providers.

    Directory of Open Access Journals (Sweden)

    Yu-Hsiang Hsieh

    Full Text Available BACKGROUND: A point-of-care test (POCT for sexually transmitted infections (STIs, which offers immediate diagnosis resulting in patients receiving diagnosis and treatment in a single visit, has the ability to address some of the STI control needs. However, needs assessment from STI experts and end users about currently available STI POCTs and their future new development has not been evaluated since World Health Organization Sexually Transmitted Diseases Diagnostics Initiative was formed over 15 years ago. Therefore, our objective was to explore the perceptions of the ideal types of STI POCT for use in health care settings. METHODOLOGY/PRINCIPAL FINDINGS: A qualitative study, encompassing eight focus groups, was conducted from March 2008 through April 2009. Participants included 6 STD clinic directors, 63 clinicians, and 7 public health/laboratory/epidemiology professionals in the STI field. Discussion topics included currently available POCT, perceived barriers to using POCT in clinics, priority STI for the development of new POCT, and characteristics of the ideal POCT. All discussions were recorded and transcribed verbatim. Themes raised as barriers for current POCT included complexity, long time frames of the so-called "rapid" test, multiple time-driven steps, requiring laboratory technician, difficulty in reading result, interruption of workflow, unreliability, and invasiveness. Chlamydia trachomatis was identified as the priority organism for development of a new STI POCT. Themes indicated for the ideal POCT included rapid turnaround (up to 20 minutes, ease of use, non-invasive, accurate (preferred sensitivity and specificity in the range of high 90s, Clinical Laboratory Improvement Amendments (CLIA-waived, user-friendly (for both patients and staff, compact, durable, and sturdy. CONCLUSIONS/SIGNIFICANCE: Focus group discussions with STI experts and professionals highlighted chlamydia as the top priority pathogen for POCT development, and

  2. [Practical nursing training in the University School of Nursing of the Community of Madrid. Opinion of students and health professionals. Qualitative study with discussion groups].

    Science.gov (United States)

    Pérez Andrés, Cristina; Alameda Cuesta, Almudena; Albéniz Lizarraga, Carmen

    2002-01-01

    In the nursing schools, the contrast between what is taught in the classrooms and what is practiced at the health care centers usually creates a great deal of confusion on the part of the students. The objective of this research is to ascertain the opinion of the students and of the professionals at the health care centers where they are doing their training with regard thereto in order to detect their problems and see what differences exist between primary and specialized care. This research was conducted throughout the first half of 2000 employing qualitative methodology, by means of four discussion groups comprised of students, former students, primary care training advisors and nursing professionals at the hospitals where the students of the school in question are doing their nursing training. The initial involvement employed was indirect. The comments of the nursing students and of their training advisors with regard to the practice nursing during the diploma studies reveal dissatisfaction on the part of both of these groups. In all of the groups point out anxiety as the leading factor involved in their teaching as well as learning activities and during professional training. The lack of identification as a group of professionals seems to be related to the lack of recognition on the part of the others, the demand for a degree being granted for their college studies and for the setting up of specialities would contribute to their social recognition and, as a result thereof, to their identification as a professional group. Until a solution is provided to the anxiety which the nursing professionals feel with regard to their professional practice, which they pass on to their students during nursing training, it will not be possible to achieve a higher degree of satisfaction with nursing training experiences either on the part of the training advisors or on the part of the students.

  3. Manifestations of Differential Cultural Capital in a University Classroom: Views from Classroom Observations and Focus Group Discussions in a South African University

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    Edmore Mutekwe

    2014-11-01

    Full Text Available Based predominantly on Pierre Bourdieu’s social and cultural reproduction theory, particularly his notions of cultural capital and symbolic violence, this paper explores how first year post graduate Diploma in Higher Education (PGDHE university students from diverse socio-linguistic backgrounds differ in the levels at which they understand and express themselves in classroom activities. The paper’s thesis is that the diverse nature of South African classrooms presents a number of challenges not only for students but also for educators in terms of the use of English as a medium of instruction or the language for learning and teaching (LOLT. Owing to the fact that the South African Language in Education Policy (LiEP of 1997 empowers both learners and educators in schools to use any of the eleven South African official languages as a LOLT wherever that is reasonably possible, students whose English backgrounds were deficient in enculturating them in the use of English as a learning tool often encounter challenges in expressing their ideas in the classroom, whether in writing or in oral presentations. The discussion is anchored in the data elicited through two data collection methods, lesson observations in a Diploma in Higher Education, Research class composed of students from diverse racial and ethnic backgrounds and through focus group discussion sessions with 40 multi-ethnic Diploma in Higher Education students from the same classroom. The data management and analysis for this study was done thematically, with views emerging from the observations and focus group discussions being clustered into superordinate themes for convenience of the discussion of the findings. The findings of this study were that students from affluent socio-economic backgrounds who enter university with a rich and relevant English linguistic capital, values and attitudes enjoy an enormous advantage compared to their counterparts whose social class and linguistic

  4. Gauging the gaps in student problem-solving skills: assessment of individual and group use of problem-solving strategies using online discussions.

    Science.gov (United States)

    Anderson, William L; Mitchell, Steven M; Osgood, Marcy P

    2008-01-01

    For the past 3 yr, faculty at the University of New Mexico, Department of Biochemistry and Molecular Biology have been using interactive online Problem-Based Learning (PBL) case discussions in our large-enrollment classes. We have developed an illustrative tracking method to monitor student use of problem-solving strategies to provide targeted help to groups and to individual students. This method of assessing performance has a high interrater reliability, and senior students, with training, can serve as reliable graders. We have been able to measure improvements in many students' problem-solving strategies, but, not unexpectedly, there is a population of students who consistently apply the same failing strategy when there is no faculty intervention. This new methodology provides an effective tool to direct faculty to constructively intercede in this area of student development.

  5. Aiming to be a breastfeeding mother in a neonatal intensive care unit and at home: a thematic analysis of peer-support group discussion in social media.

    Science.gov (United States)

    Niela-Vilén, Hannakaisa; Axelin, Anna; Melender, Hanna-Leena; Salanterä, Sanna

    2015-10-01

    Preterm infants are usually breastfed less than full-term infants, and successful breastfeeding requires a supportive environment and special efforts from their mothers. A breastfeeding peer-support group, utilising social media, was developed for these mothers in order to support them in this challenge. Mothers were able to discuss breastfeeding and share experiences. The purpose of this study was to describe the perceptions of breastfeeding mothers of preterm infants based on the postings in peer-support group discussions in social media. The actively participating mothers (n = 22) had given birth <35 gestational weeks. They were recruited from one university hospital in Finland. The social media postings (n = 305) were analysed using thematic analysis. A description of the process of breastfeeding a preterm infant from the point of view of a mother was created. The process consisted of three main themes: the breastfeeding paradox in hospital, the 'reality check' of breastfeeding at home and the breastfeeding experience as part of being a mother. The mothers encountered paradoxical elements in the support received in hospital; discharge was promoted at the expense of breastfeeding and pumping breast milk was emphasised over breastfeeding. After the infant's discharge, the over-optimistic expectations of mothers often met with reality - mothers did not have the knowledge or skills to manage breastfeeding at home. Successful breastfeeding was an empowering experience for the mothers, whereas unsuccessful breastfeeding induced feelings of disappointment. Therefore, the mothers of preterm infants need evidence-based breastfeeding counselling and systematic support in a neonatal intensive care unit (NICU) and at home. © 2014 John Wiley & Sons Ltd.

  6. Medical Students' Attitudes Toward Non-Adherent Patients Before and After a Simulated Patient-Role Activity and Small-Group Discussion: Revisited.

    Science.gov (United States)

    DelPrete, Angela; Giordano, Christin; Castiglioni, Analia; Hernandez, Caridad

    2016-01-01

    Introduction This study seeks to explore whether the documented decline in medical student empathy can be prevented or slowed using simulated patient-role activities and small-group discussions about the patient experience of living with a chronic illness. Methods First-year students (M1, n = 118) at the University of Central Florida College of Medicine (UCFCOM) participated in a simulated patient-role activity resembling the experience of a patient with Type 2 diabetes mellitus. The activity included taking daily "medication," participating in moderate exercise, and maintaining a low carbohydrate diet. At the end of the simulated patient-role activity, students took part in a small-group discussion about their experiences. Students completed the Jefferson Scale of Physician Empathy: Student Version (JSPE:S) before and after the activity. Additionally, fourth-year students (M4) at UCFCOM completed the JSPE:S to serve as the control, as this class completed the curriculum without any simulated patient-role activities. Results A total of 86 responses out of 118 possible M1 participants (73% response rate) were received. Of these, 62 surveys were completed and were therefore used for statistical analysis. A dependent sample t-test revealed no statistically significant increase on pre-activity (M = 111.15, SD = 8.56) and post-activity (M = 111.38, SD = 9.12) empathy scores (p = .78). A positive correlation was revealed to exist between pre- and post-activity empathy scores (r = 0.72, p students, our findings suggest that on a short-term scale, empathy levels were not affected by the activity.

  7. Do we have a moral responsibility to compensate for vulnerable groups? A discussion on the right to health for LGBT people.

    Science.gov (United States)

    Ekmekci, Perihan Elif

    2016-11-26

    Vulnerability is a broad concept widely addressed in recent scholarly literature. Lesbian, gay, bisexual, and transgender (LGBT) people are among the vulnerable populations with significant disadvantages related to health and the social determinants of health. Medical ethics discourse tackles vulnerability from philosophical and political perspectives. LGBT people experience several disadvantages from both perspectives. This article aims to justify the right to health for LGBT people and their particular claims regarding healthcare because they belong to a vulnerable group. Rawls' theory of justice and Norman Daniels' normal functioning approach will be discussed in this context. Despite the fact that the right to health can be justified by Daniels' normal functioning approach, there is still a theoretical gap in justifying the right to health for particular vulnerable populations such as LGBT peopleand discussing society's duty to compensate for these disadvantages. In search of solid theoretical grounds for the justification of the right to health for LGBT people, the present author takes the opportunity to utilize Daniels' flexible definition of normal functioning to show that normal functioning not only varies by age but also by different states of human existence, including sexual orientation and gender identity, and to propose replacing the life span approach with normal states of human existence.

  8. Patient-based outcome analysis is important to determine the success of total knee arthroplasty: result of a focus group discussion.

    Science.gov (United States)

    Zacharia, Balaji; Paul, Manu; Thanveeruddin Sherule, Mohammed

    2016-01-01

    Total knee replacement (TKR) results in an excellent outcome in terms of pain relief. The reporting of outcomes was traditionally focused on implant survivorship and objective outcomes such as range of motion, knee stability, and radiographic alignment. However, patients and doctors had differing perceptions of all domains of outcome, especially subjective quality of life domains such as emotions and social functioning. In this study, we tried to find out the expectations of Indian patients regarding TKR and assess the level of satisfaction among our patients from their view point using focus group discussion (FGD), and whether these expectations have an impact on outcomes and patient satisfaction. This study was conducted in the Department of Orthopedics, Government Medical College, Kozhikode, Kerala, India, in November 2014. Patients between the ages 60 and 65 years who met inclusion criteria were selected. A total of 50 patients were selected for FGDs. Among them, 42 patients participated in FGD. The remaining eight did not appear for the discussion. A total of four FGD sessions were conducted. It was found that there is a discrepancy between the satisfaction levels of patient and surgeon. There is a difference in satisfaction level achieved depending on socioeconomic, geographic, and cultural characteristics. Newer methods of TKR outcome assessment combining radiological outcome, surgeon-based assessment, and patient satisfaction based on their socioeconomic status and cultural characteristics should be developed for different populations.

  9. ELGamal public key cryptosystem based on multiplicative group Zp*%基于乘法群Zp*的ELGamal公钥密码系统

    Institute of Scientific and Technical Information of China (English)

    孙立宏

    2011-01-01

    为了解决发送方与接收方不能识别对方身份的问题,在研究E1Gamal密码体制的基础上,给出了一种基于乘法群Zn*的ELGamal公钥密码体制。结果表明:该算法可以实现通信双方的双向身份认证,有效地防止了攻击者冒充发送方伪造要发送的消息。同时该算法在通信过程中加入了可以追踪消息来源的信息,使得接收者可以对消息的真实性进行有效的验证。通过对消息的双重保护,该体制实现了在公开信道上的安全通信。%In the public key cryptography system, the sender encrypts the messages with the recipient's public key and the receiver decrypts them with their own secret key, which results in that the two sides are unable to recognize each other. In order to solve the problem above, an ELGamal public key cryptosystem based on multiplicative group Zp* has been presented in this paper. The bidirectional identity authentication between both communications sides are supplied in the proposed algorithm, which successfully prevents the attacker sending a forged message in the identity of sender. In addition, the algorithm also adds the information to track the sources of message in the communication process, which allows the message recipients verifying the authenticity of message effectively. The system implements a secured communication in the public channel through a dual protection on message.

  10. Participatory rural appraisal approaches: an overview and an exemplary application of focus group discussion in climate change adaptation and mitigation strategies

    Directory of Open Access Journals (Sweden)

    M.N. Uddin

    2013-12-01

    Full Text Available Different tools and techniques of participatory approaches are the basic way of conducting qualitative research especially in the field of applied social science. Focus Group Discussion (FGD is one of the main Participatory Rural Appraisal (PRA technique often used in combination with others to achieve desired goals. Considering this concept, this paper attempts to review the PRA approach and then application of FGD, in combination with matrix scoring and ranking to identify problems and causes of climate change along with possible mitigation and adaptation strategies. A group of 20 students at post graduate level under the faculty of Agriculture and Horticulture at Humboldt University of Berlin, Germany those from different corner of the world was considered as target people of the study. The results concluded that “unpredictable weather events” was ranked as the present outstanding visible climate change problem caused by “human activities”. However, it was noted that if alternative renewable energy sources are exploited, this could contribute to solving the present climate change problem. This finding might have the good reference for the policy makers in the same line not only for developing countries but also for developed countries.

  11. Review of the Effects of Housing Place on Individual and Social Development and Academic Success of University Students by Focus Group Discussion

    Directory of Open Access Journals (Sweden)

    Erdal ARLI

    2013-01-01

    Full Text Available Students who are entitled to get into a university in our country usually live with their families. However, when a student gets into a university which is far away or when it is difficult to go and return, one of the problems which their family has to solve is housing. Housing place alternatives might be government owned hostel, private hostel or houses for rent. The young student who has lived with their family until that age may find themselves in a different environment. This life might make the young people gain socialization, sense of responsibility and sharing, being able to manage their lives in the community - and it might also make them gain qualifications like being able to make discrimination between good and bad. The basic objective of this research is to identify the effects of housing place on individual and social development. The research has been applied to the students of Kocaeli University, Karamürsel Vocational High School . For the research, five focus group discussions have been carried out, each of which is formed of 8 participants and one assistant. In the study which was carried out based on question and answer, 3 general to special questions were directed . Group members have been formed of students who stay in house and hostel also students who stay with their own family. Maximum diversity sampling has been executed. According to the results, it appears that most essential contributions of staying in a hostel are mainly information sharing, growing mature, learning about recognizing human beings, being able to make discrimination between good and bad, learning about trusting, learning about making more moderate spending, and being able to make decisions freely. Besides, participants stated that any type of environment was available for studying both in governmental hostel and in housing environment, and studying in groups increases their successes.

  12. 基于EVA视角下的报业集团绩效评价%Discussion on the Performance Evaluation of Press Group Based on EVA

    Institute of Scientific and Technical Information of China (English)

    张新星

    2015-01-01

    In recent years, China’s press industry is developing rapidly. At the same time of developing the traditional business, some press groups explore the cross-regional, cross-industrial, multi-faceted and multi-level development on the basis of their own resources. Their development level is being affected by mar⁃ket factors more and more obviously.But the traditional financial performance evaluation system based on the income, profit, net assets yield and others can not meet the needs of the modern press group ’s multi level gover⁃nance structure and diversification management . Taking the Economic Value Added (EVA) as the break⁃through point, this paper has done a preliminary discussion on the method and system of performance evaluation of press groups .%近年来,我国报业发展迅猛,一些报业集团在坚持发展传统主业的同时,依托自身资源优势进行了跨地区、跨行业、多方位、多层次的发展探索,其发展程度、发展水平受市场因素的影响也越来越明显。而传统的收入、利润、净资产收益率等财务绩效评价体系已满足不了现代报业集团多层级结构治理和多元化经营需要。本文以经济增加值(EVA)为切入点,对报业集团的绩效评价方法、体系进行了初步探讨。

  13. 浅析海外风力发电 EPC 总承包项目控制关键点%Discussion on Key Control Points in Contract Projects of Overseas Wind Power Development

    Institute of Scientific and Technical Information of China (English)

    赵淼; 黄朝

    2014-01-01

    Management experiences in the first EPC ( Engineering, Procurement and Construction) contract wind power development project of Chinese company in Pakistan are summarized.The key control points in overseas EPC contract wind power projects are discussed from the design, purchase and construction aspects, which is of great value to similar projects.%以中国在巴基斯坦实施的第一个风电EPC总承包项目的组织经验为背景,分别从设计、采购、施工3个方面,对海外风力发电EPC总承包项目控制关键点进行论述,为将来其他同类项目提供借鉴。

  14. Insights of health district managers on the implementation of primary health care outreach teams in Johannesburg, South Africa: a descriptive study with focus group discussions.

    Science.gov (United States)

    Moosa, Shabir; Derese, Anselme; Peersman, Wim

    2017-01-21

    Primary health care (PHC) outreach teams are part of a policy of PHC re-engineering in South Africa. It attempts to move the deployment of community health workers (CHWs) from vertical programmes into an integrated generalised team-based approach to care for defined populations in municipal wards. There has little evaluation of PHC outreach teams. Managers' insights are anecdotal. This is descriptive qualitative study with focus group discussions with health district managers of Johannesburg, the largest city in South Africa. This was conducted in a sequence of three meetings with questions around implementation, human resources, and integrated PHC teamwork. There was a thematic content analysis of validated transcripts using the framework method. There were two major themes: leadership-management challenges and human resource challenges. Whilst there was some positive sentiment, leadership-management challenges loomed large: poor leadership and planning with an under-resourced centralised approach, poor communications both within the service and with community, concerns with its impact on current services and resistance to change, and poor integration, both with other streams of PHC re-engineering and current district programmes. Discussion by managers on human resources was mostly on the plight of CHWs and calls for formalisation of CHWs functioning and training and nurse challenges with inappropriate planning and deployment of the team structure, with brief mention of the extended team. Whilst there is positive sentiment towards intent of the PHC outreach team, programme managers in Johannesburg were critical of management of the programme in their health district. Whilst the objective of PHC reform is people-centred health care, its implementation struggles with a centralising tendency amongst managers in the health service in South Africa. Managers in Johannesburg advocated for decentralisation. The implementation of PHC outreach teams is also limited by

  15. Rodas de conversa sobre o trabalho na rua: discutindo saúde mental Conversation groups on outreach work: discussing mental health

    Directory of Open Access Journals (Sweden)

    Izabel Cristina Rios

    2007-01-01

    Full Text Available O artigo narra uma experiência de ensino com agentes comunitários de saúde em uma unidade do Programa de Saúde da Família da periferia de São Paulo. Com o objetivo de discutir temas de Saúde Mental relevantes para o trabalho cotidiano desses profissionais, criou-se um espaço de aprendizagem e construção de sentido para esses agentes. Em grupos de encontro quinzenais com uma psiquiatra e cerca de 20 agentes, discutiam-se casos clínicos e situações de vida e trabalho a partir dos quais era possível aprender conceitos básicos de Saúde Mental e pensar o papel e a identidade desses profissionais na comunidade. Ao final de um ano de experiência, avaliou-se que tal atividade é fundamental como apoio para o desenvolvimento do trabalho desses profissionais, e para o aprendizado de como lidar com aspectos subjetivos próprios e dos usuários, especialmente na periferia de grandes centros urbanos.This article describes a teaching experience with health community agents in a Family Health Program unit. In order to discuss important everyday mental health themes, a space for these agents was created, intended for learning and building up senses. Groups of 20 agents and a psychiatrist met every two weeks, to discuss clinical cases, and life and work situations which helped apprehend basic Mental Health concepts and to reflect on the role and identity of these professionals in the community. After one year, this activity was considered fundamental to support the work developed by the agents and to help them learn how to deal with their and the users' subjective aspects, especially in the periphery of large urban centers.

  16. Understanding the impact of subsidizing artemisinin-based combination therapies (ACTs in the retail sector--results from focus group discussions in rural Kenya.

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    Sarah V Kedenge

    Full Text Available BACKGROUND: There is considerable interest in the potential of private sector subsidies to increase availability and affordability of artemisinin-based combination therapies (ACTs for malaria treatment. A cluster randomized trial of such subsidies was conducted in 3 districts in Kenya, comprising provision of subsidized packs of paediatric ACT to retail outlets, training of retail staff, and community awareness activities. The results demonstrated a substantial increase in ACT availability and coverage, though patient counselling and adherence were suboptimal. We conducted a qualitative study in order to understand why these successes and limitations occurred. METHODOLOGY/PRINCIPAL FINDINGS: Eighteen focus group discussions were conducted, 9 with retailers and 9 with caregivers, to document experiences with the intervention. Respondents were positive about intervention components, praising the focused retailer training, affordable pricing, strong promotional activities, dispensing job aids, and consumer friendly packaging, which are likely to have contributed to the positive access and coverage outcomes observed. However, many retailers still did not stock ACT, due to insufficient supplies, lack of capital and staff turnover. Advice to caregivers was poor due to insufficient time, and poor recall of instructions. Adherence by caregivers to dosing guidelines was sub-optimal, because of a wish to save tablets for other episodes, doses being required at night, stopping treatment when the child felt better, and the number and bitter taste of the tablets. Caregivers used a number of strategies to obtain paediatric ACT for older age groups. CONCLUSIONS/SIGNIFICANCE: This study has highlighted that important components of a successful ACT subsidy intervention are regular retailer training, affordable pricing, a reliable supply chain and community mobilization emphasizing patient adherence and when to seek further care.

  17. Anemia and its determinants among women of reproductive age of a slum in Kolkata: A focus group discussion among health workers in a slum of Kolkata.

    Science.gov (United States)

    Dasgupta, Aparajita; Sarkar, Kaushik; Chowdhury, Ranadip; Ray, Arindam; Shahbabu, Bhaskar

    2016-01-01

    Anemia is a major contributor to morbidity and mortality among women of reproductive age. Progress toward reducing the burden of anemia has been little despite efforts through decades. We conducted this study to unearth the microlevel determinants of anemia among women of reproductive age. This qualitative study was conducted in Urban Health Centre (UHC), Chetla. A focus group discussion was held among all the eight health staffs, who were involved in reproductive and child health-related service delivery under UHC, Chetla. A thematic analysis of the transcript was performed. We found that socioeconomic factors like poverty and social neglect, diet and nutrition related factors, lack of personal hygiene, and worm infestation contributed to the burden of anemia, and this was reinforced by factors related to service delivery, such as lack of supply of drugs and supplements, and inadequate training of health workers as well as poor media accountability. Because of easy reversibility and implementation, health service delivery-related issues should be addressed closely through monitoring and evaluation and appropriate and timely action should be taken to improve the effectiveness of the services.

  18. A revision of the Neotropical Solenopsidini ant genus Oxyepoecus Santschi, 1926 (Hymenoptera: Formicidae: Myrmicinae: 2. Final. Key for species and revision of the Rastratus species-group

    Directory of Open Access Journals (Sweden)

    Nicolas Lavour de Albuquerque

    2009-01-01

    Full Text Available In the first paper of this series (Albuquerque & Brandão, 2004 we revised the Vezenyii species group of the exclusively Neotropical solenopsidine (Myrmicinae ant genus Oxyepoecus. In this closing paper we update distribution information on the Vezenyii group species and revise the other Oxyepoecus species-group (Rastratus. We describe two species (Oxyepoecus myops n. sp. and O. rosai n. sp. and redescribe previously known species of the group [O. daguerrei (Santschi, 1933, O. mandibularis (Emery, 1913, O. plaumanni Kempf, 1974, O. rastratus Mayr, 1887, and O. reticulatus Kempf, 1974], adding locality records and comments on the meagre biological data of these species. We also present an identification key to Oxyepoecus species based on workers.No primeiro artigo desta série (Albuquerque & Brandão, 2004 revisamos o grupo de espécies Vezenyii do gênero exclusivamente neotropical de formigas Oxyepoecus (Myrmicinae: Solenopsidini. Completamos agora a série, atualizando informações sobre as espécies do grupo Vezenyii e revendo a taxonomia do outro grupo de espécies de Oxyepoecus (Rastratus, descrevendo Oxypoecus myops n. sp. e Oxyepoecus rosai n. sp. e redescrevendo as espécies já conhecidas [Oxyepoecus daguerrei (Santschi, 1933, O. mandibularis (Emery, 1913, O. plaumanni Kempf, 1974, O. rastratus Mayr, 1887, e O. reticulatus Kempf, 1974], adicionando registros de localidade e comentando o conjunto dos poucos dados sobre a biologia das espécies do grupo. Apresentamos também uma chave de identificação de espécies de Oxyepoecus baseada em operárias.

  19. 药用植物AM共生体系评价方法和关键技术的探讨%Discussion on appraisal methods and key technologies of arbuscular mycorrhizal fungi and medicinal plant symbiosis system

    Institute of Scientific and Technical Information of China (English)

    陈美兰; 郭兰萍; 杨光; 陈敏; 杨立; 黄璐琦

    2011-01-01

    Applications of arbuscular mycorrhizal fungi in research of medicinal plant cultivation are increased in recent years. Medicinal plants habitat is complicated and many inclusions are in root, however crop habitat is simple and few inclusions in root. So appraisal methods and key technologies about the symbiotic system of crop and arbuscular mycorrhizal fungi cant completely suitable for the symbiotic system of medicinal plants and arbuscular mycorrhizal fungi. This article discuss the appraisal methods and key technologies about the symbiotic system of medicinal plant and arbuscular mycorrhizal fungi from the isolation and identification of arbuscular mycorrhiza, and the appraisal of colonization intensity. This article provides guidance for application research of arbuscular mycorrhizal fungi in cultivation of medicinal plants.%近年来AM菌在中药栽培研究领域受到的关注增加,但是由于药用植物品种繁多、生境复杂多样、根系内含物多,而农作物生境单一,根系成分简单,因此有关从农作物AM共生体系的评价方法和关键技术并不能完全适合药用植物AM共生体系.作者分别从药用植物AM菌的分离鉴定、AM侵染强度评价等方面对药用植物AM共生体系的评价方法和关键技术进行了探讨,旨在对今后AM菌在药用植物栽培中的应用研究提供指导.

  20. 旅游管理专业开展研讨式教学的关键因素分析%Analysis on Key Factors for the Implementation of Re-search -Discussion Teaching for Tourism Management Major

    Institute of Scientific and Technical Information of China (English)

    陈菲; 刘云颖

    2015-01-01

    文章从客观因素、教师因素和学生因素三个方面,通过问卷调查和实地访谈,运用因子分析法找出旅游管理专业顺利实施研讨式教学的关键因素。实证分析结果显示,学生参与程度对研讨式教学的影响力最大,接下来依次为教师教学水平、客观因素、教师教学理念、学生偏好和课堂规模。最后文章从学生参与、教学水平、考核方法、评估制度以及学校支持等五个方面提出具有可操作性的建议和措施。%From such three aspects as objective factors, teachers' factors and students' factors, through questionnaire survey and field interviews, this paper used factor analysis to find out the key factors for the successful implementation of research-discussion teaching for tourism management major. The result of empirical analysis shows that the degree of students' participation has the greatest influence on research-discussion teaching, followed by the teaching level of teachers, objective factors, teachers' teaching concepts, students' preferences and classroom size. Finally, the article puts forward the suggestions and measures from five as-pects, such as student participation, teaching level, assessment method, assessment system and school support.

  1. Conclusion: Special issue on genetic and alcohol use disorder research with diverse racial/ethnic groups: Key findings and potential next steps.

    Science.gov (United States)

    Chartier, Karen G; Hesselbrock, Michie N; Hesselbrock, Victor M

    2017-08-01

    This special issue brings together papers focusing on a wide range of topics relevant to the research and understanding of the role of race/ethnicity and genetic variation for the susceptibility of developing an alcohol use disorder (AUD). The key findings from the issue's 10 articles are reviewed and organized here around three topics: I: addictive behaviors and potential environmental influences; II: a focus on four racial/ethnic groups; and III: special methodologies. Several potential next steps in improving effective research strategies are highlighted: (1) implementing best practices for outreach and community engagement may reduce reluctance to participate; (2) recruiting adequately sized and racially/ethnically diverse samples will require new collaborations with investigators who successfully work in diverse communities; (3) identifying and assessing environmental influences that are both unique to, and common among, racial/ethnic groups may inform preventions for AUD; (4) use of standardized measures will facilitate the generation of larger samples and meta-analysis of research findings; and (5) use of better analytic approaches and experimental methods will improve replication in gene finding research and help advance new areas of research. Genetic research of AUD in diverse racial/ethnic populations is advancing. The articles in this issue examined the general theme of including diverse population groups in genetic studies and offered potential strategies for addressing some common problems. Greater inclusion of diverse racial/ethnic populations in this research is important to ensure that the benefits of new knowledge and technology are equally shared. (Am J Addict 2017;26:532-537). © 2017 American Academy of Addiction Psychiatry.

  2. discussion on several key points of Linen/cotton blended products quantitative analysis%棉麻混纺产品定量分析的几处关键点探讨

    Institute of Scientific and Technical Information of China (English)

    刘娟

    2015-01-01

    Discussion on several key points (Desizing、sampling、production and diameter measurement) of FZ/T30003-2009《Method for quantitative analysis of ramie cotton blended textile-Micro projection》. The conclusion is amylase desizing together with ultrasonic technology can effectively remove slurry and dispersion fiber;Combined with working practice illustrates three kinds of the sampling way of the sample、more fast and convenient production method is proposed. Greatly improve the accuracy and efficiency on sample testing.%对于FZ/T30003-2009《麻棉混纺产品定量分析方法显微投影法》中的几处关键点:退浆、取样、制片、直径测量进行了探讨。得出淀粉酶退浆结合超声波技术可以有效地祛除浆料、分散纤维;结合工作实际列举了3类样品的取样方式,提出了更加快捷简便的制片方法,大大提高了样品测试的准确度和工作效率。

  3. Discussion on the Feasibility and Key Problems of Recycled Water Utilization in Southern China%南方地区再生水利用可行性及关键问题探讨

    Institute of Scientific and Technical Information of China (English)

    张云; 崔树彬; 胡惠方; 左其亭

    2011-01-01

    After briefly introducing the concept, usage, utilization form and system composition of recycled water, this paper analyzed the necessity and significance of recycled water utilization in southern China.Also, it examined the feasibility of recycled water utilization in terms of advantages, technical feasibility, economic feasibility and efficiency of wastewater reclamation and reuse Last, it discussed the key problems and countermeasures of usage, utilization form, water quality standard, treatment process and non-engineering supporting measures of recycled water.%在简要介绍再生水的概念、用途、利用形式、系统组成的基础上,分析了我国南方地区再生水利用的必要性及意义,并从污水再生利用的优势、技术可行性、经济可行性和效益等方面对南方地区的再生水利用可行性进行分析,最后对再生水利用用途、形式、水质标准及处理工艺、配套非工程措施等关键问题及对策等进行了探讨.

  4. 大容量SF6发电机断路器关键技术的探讨%Discussion on the Key Technologies of Large Capacity SF6 Generator Circuit Breaker

    Institute of Scientific and Technical Information of China (English)

    徐齐巍

    2015-01-01

    针对我国电力事业需求及国内发电机断路器的技术水平,阐述国内发电机断路器的发展趋势和迫切目标,提出推进国内发电机断路器发展进程的关键点;通过引入国际先进理念,探讨大容量SF6发电机断路器的关键技术,在结构型式、灭弧原理、特殊性能指标、冷却方式、操动机构方面进行深入研究,并针对该关键技术的难点问题提出解决思路,为研发满足60万kW以上至100万kW机组要求的额定短路电流160 kA以上的大容量、高参数、运行可靠的SF6发电机断路器提供理论依据。%Based on the demand of electric undertaking in china and the technological level of national generator circuit breaker , the development trend and the exigent goal are expounded, and the cores of furthering development course for national generator circuit breaker is put forward. Through importing international advanced ideas, the key technologies of large capacity SF6 generator circuit breaker are discussed. An embedded research in respects of construction form, arc interruption principle, special performance target, cooling type and operating mechanism is made, solving ideas are provided in allusion to the difficulties in key technologies, and theoretical basis is supplied for researching large capacity SF6 generator circuit breaker with rated short-circuit current being upwards of 160 kA, and with high parameter and running reliability in order to settle for the demand of the generating units with a capacity of 600 MW up to 1 000 MW.

  5. General discussion

    NARCIS (Netherlands)

    Jagers op Akkerhuis, Gerard A.J.M.

    2016-01-01

    The general discussion focuses on some aspects that are of overarching relevance for all the preceding chapters. The fi rst subject that is discussed is the relationship between systems theory and the philosophy of science. After a short summary of the principles of system science and the

  6. Discussion on the Key Points of Zero Waste Management in Beijing Rural Area%北京市农村地区垃圾零废弃关键环节研究

    Institute of Scientific and Technical Information of China (English)

    张燕; 李花粉

    2014-01-01

    This paper analyses the types, quantity, physical composition, characteristics and circulation ways of rural domestic wastes by field investigation and 800 questionnaire surveys for the rural sanitation managers, sanitation workers, and villagers. Then find out the main problems existing in the current domestic waste system, put forward the new ideas, mode, key points to carry out zero-waste management in the rural areas, Especially we discuss the waste disposal technology, facilities construction, operation mechanism and management model in two parts:biological conservation area and city development zone, combined with Beijing's development orientation. In the end some pieces of policy suggestions are proposed.%采用实地调研和问卷调查的研究方法,针对农村环卫管理者、一线保洁员和村民发放了800份问卷,对北京市农村地区生活垃圾的种类、产生量、物理成分和特征值、特点、循环途径进行了调研和结果分析。分析了现行生活垃圾体系当中存在的主要问题,提出了在农村地区开展生活垃圾零废弃的思路、模式和关键环节。同时结合北京市发展定位,分别对生态涵养区和城市发展新区的垃圾处理技术、设施设备建设、运行机制建设和管理模式进行了深入分析研究,并提出相关政策建议。

  7. Discussion of Several Key Problems about Dynamic Detection of Land Use by Remote Sensing%遥感用于土地利用变化动态监测中的若干问题探讨

    Institute of Scientific and Technical Information of China (English)

    徐美; 黄诗峰; 黄绚

    2000-01-01

    Remote sensing and GIS have been widely used in dynamic detection of land use changes, which have been commonly recognized by many peoples. Because the land use and land cover are very complex, we meet many problems in land use detection by remote sensing. In this paper, we mainly discuss several key problems in actual applications of remote sensing technology to land use changes detecting effectively, such as the special relations between land use and land cover, selection and handling of images, comparing and synthesizing of several different means, participating of much knowledge in many other sides and so on. If those problems can be well resolved, the precision can be well improved to much extent, and the result may be better.%利用遥感与地理信息系统技术进行土地资源调查和动态变化监测已为人们所共识。由于土地利用与土地覆盖的复杂性,利用遥感技术进行土地利用变化动态监测时,遇到了许多具体问题。从应用的角度出发,重点在土地利用与土地覆盖的关系、影像的选择与处理、动态监测方法的选定与综合及其它多方面知识的参与等几个方面进行了探讨。这些问题的解决,将会在很大程度上提高土地利用变化监测的精度。

  8. Analysis and discussion of key technical strategies for measles prevention and control%现阶段消除麻疹关键防控技术策略分析与探讨

    Institute of Scientific and Technical Information of China (English)

    刘爱国; 杨会利

    2011-01-01

    Based on data on measles surveillance in the Taian area from the past 12 years, this study analyzed the major characteristics of measles outbreaks and incidence, including the month or date that the initial case of measles appeared each year, dips in seasonal incidence, nosocomial infection, and the high proportion of patients with measles among infants <8 months of age and adults. Such characteristics are crucial to predicting measles incidence and measles control efforts. Key technical measures are discussed and the importance of standardized emergency responses and administrative intervention in the event of a measles outbreak are emphasized.%基于对泰安市1999~2010年麻疹监测与防控工作,分析了当前麻疹发生与流行的主要特征,提出了麻疹首例病例、疫情季节性流行低谷、医院感染、小于8月龄及成人病例为主的两极年龄分布等特征对于疫情预测与防控工作的重要意义,重点探讨消除麻疹关键防控技术措施,强调规范疫情应急处置及强化行政干预的重要性,并力求纠正当前消除麻疹工作中存在的一些问题.

  9. Revision of the western Palaearctic species of Aleiodes Wesmael (Hymenoptera, Braconidae, Rogadinae. Part 1: Introduction, key to species groups, outlying distinctive species, and revisionary notes on some further species

    Directory of Open Access Journals (Sweden)

    Cornelis van Achterberg

    2016-12-01

    Full Text Available Seven new species of the genus Aleiodes Wesmael, 1838 (Braconidae: Rogadinae are described and illustrated: A. abraxanae sp. n., A. angustipterus sp. n., A. artesiariae sp. n., A. carminatus sp. n., A. diarsianae sp. n., A. leptofemur sp. n., and A. ryrholmi sp. n. A neotype is designated for each of Aleiodes circumscriptus (Nees, 1834 and A. pictus (Herrich-Schäffer, 1838, and both species are redescribed and illustrated. Aleiodes ochraceus Hellén, 1927 (not A. ochraceus (Curtis, 1834 is renamed as A. curticornis nom. n. & stat. rev., and redescribed and illustrated. Aleiodes bistrigatus Roman, 1917, A. nigriceps Wesmael, 1838, and A. reticulatus (Noskiewicz, 1956, are re-instated as valid species. A lectotype is designated for Aleiodes bistrigatus Roman. An illustrated key is given to some distinctive species and the residual species groups along which further parts of an entire revision of western Palaearctic species of Aleiodes and Heterogamus will be organised. Biology, host associations and phenology are discussed for the keyed species (in addition to the above, A. albitibia (Herrich-Schäffer, 1838, A. apiculatus (Fahringer, 1932, A. arcticus (Thomson, 1892, A. cantherius (Lyle, 1919, A. esenbeckii (Hartig, 1834, A. jakowlewi (Kokujev, 1898, A. modestus (Reinhard, 1863, A. nigricornis Wesmael, 1838, A. pallidator (Thunberg, 1822, A. praetor (Reinhard, 1863, A. seriatus (Herrich- Schäffer, 1838 sensu lato, A. testaceus (Telenga, 1941, A. ungularis (Thomson, 1892, and A. varius (Herrich-Schäffer, 1838 which are dealt with in full here (with the exception of A. seriatus s.l. which is, however, included in the key. The experimental methodology covering the revision as a whole, which involves some behavioural investigation, is outlined.

  10. Discussion of Several Properties on Leibniz-affine Group%Leibniz 仿射群若干性质的讨论

    Institute of Scientific and Technical Information of China (English)

    曾辉

    2015-01-01

    首先引入了Leibniz仿射群的概念;然后给出了G -仿射群是Leibniz仿射群的一个充要条件,得到了Leibniz仿射群上Leibniz张量和Leibniz括号的具体表达式;最后得到了Leibniz仿射群及其子流形与Leibniz左作用的相关性质。%The concept of Leibniz-affine group was introduced firstly,then a necessary and sufficient condition of a G-affine group being a Leibniz-affine group was given. And the concrete expressions of Leibniz tensor and Leibniz bracket on the Leibniz-affine group were obtained. Finally,some properties about Leibniz-affine group, its submanifolds and Leibniz-left action were proved.

  11. Effect of using an audience response system on learning environment, motivation and long-term retention, during case-discussions in a large group of undergraduate veterinary clinical pharmacology students.

    Science.gov (United States)

    Doucet, Michèle; Vrins, André; Harvey, Denis

    2009-12-01

    Teaching methods that provide an opportunity for individual engagement and focussed feedback are required to create an active learning environment for case-based teaching in large groups. A prospective observational controlled study was conducted to evaluate whether the use of an audience response system (ARS) would promote an active learning environment during case-based discussions in large groups, have an impact on student motivation and improve long-term retention. Group A (N = 83) participated in large group case discussions where student participation was voluntary, while for group B (N = 86) an ARS was used. Data collection methods included student and teacher surveys, student focus group interviews, independent observations and 1-year post-course testing. Results indicated that the use of an ARS provided an active learning environment during case-based discussions in large groups by favouring engagement, observation and critical reflection and by increasing student and teacher motivation. Although final exam results were significantly improved in group B, long-term retention was not significantly different between groups. It was concluded that ARS use significantly improved the learning experience associated with case-based discussions in a large group of undergraduate students.

  12. End-of-life care in advanced kidney disease: ethical and legal issues and key challenges for black and minority ethnic groups.

    Science.gov (United States)

    Cronin, Antonia J

    2014-09-01

    Advances in modern medical technology have gone so far that it is now possible for machinery to keep people alive. To some extent this has led to a misperception in society that death can almost always be postponed because life-sustaining extracorporeal machinery of some sort or another, for example a dialysis machine, can prevent it. However, for some, being kept alive connected to a dialysis machine for four hours three times a week does not represent or even come close to an existence or quality of life they consider valuable. It may even cause unnecessary distress. This may be because they have reached a point at the end of their lives where they would like the focus of their treatment or care to become that which enables them to live as well as possible until they die. In these circumstances treatment and care should properly be that which enables the supportive and palliative care needs of both patient and family to be identified and met throughout the last phase of life and into bereavement. Identifying and acknowledging the importance of such a paradigm shift in the delivery of healthcare, and above all facilitating it, includes taking on the responsibility, incumbent upon us all, to address the ethical issues that are brought into focus. In this paper, I examine some of these issues. I consider the ways in which underlying theoretical ethical principles have informed the development of professional guidance and highlight the dynamic relationship this guidance has with the law. Finally, I demonstrate the ways in which it can be usefully applied to inform and assist clinical decision-making. Key challenges for BAME groups are addressed.

  13. RISK IN HUMAN RESOURCE MANAGEMENT AND IMPLICATIONS FOR EXTENSION PROGRAMMING - RESULTS OF FOCUS GROUP DISCUSSIONS WITH DAIRY AND GREEN INDUSTRY MANAGERS

    OpenAIRE

    Bitsch, Vera; Harsh, Stephen B.; Mugera, Amin W.

    2003-01-01

    Employees are both a source of risk and means of addressing risk, and good employee management practices can increase risk resilience. Forty green industry managers and 22 dairy managers discussed personnel issues related to their industry. Influx of Hispanic labor has changed personnel management and the focus of risk management.

  14. Gauging the Gaps in Student Problem-Solving Skills: Assessment of Individual and Group Use of Problem-Solving Strategies Using Online Discussions

    Science.gov (United States)

    Anderson, William L.; Mitchell, Steven M.; Osgood, Marcy P.

    2008-01-01

    For the past 3 yr, faculty at the University of New Mexico, Department of Biochemistry and Molecular Biology have been using interactive online Problem-Based Learning (PBL) case discussions in our large-enrollment classes. We have developed an illustrative tracking method to monitor student use of problem-solving strategies to provide targeted…

  15. Using Group Discussion with Taiwan's EFL College Students: A Comparison of Comprehension Instruction for Book Club, Literature Circles, and Instructional Conversations

    Science.gov (United States)

    Shen, Fu-Yuan

    2013-01-01

    The research presented here involved a one-semester study; during this period of time, reading comprehension instruction representing three major discussion-centered approaches (Book Club, BC; Literature Circles, LC; Instructional Conversations, IC) was designed and implemented. The effectiveness of the three experimental approaches and one…

  16. How the Teacher Decide the Style of Group Discussion in Accordance with the Textbook%老师怎样根据课文的内容确定小组研讨的方式

    Institute of Scientific and Technical Information of China (English)

    杨柳

    2012-01-01

      本文简要论述了小组合作学习的优势,并在此基础上探讨了教师如何根据课文内容确定小组研讨的方式%  Based on the elaboration of the advantages of group cooperative learning, this paper discusses how the teacher de-cide the style of group discussion in accordance with textbook.

  17. 探讨医院网络维护的必要性及技术要点%Discuss the Necessity and the key Technology of Hospital Network Maintenance

    Institute of Scientific and Technical Information of China (English)

    杜伟昆

    2015-01-01

    With the progress of the times and the modern science and technology, computer technology, network technology, information technology has been widely applied in twenty-ifrst Century, is a network era, in all areas of the application of the network. Natural hospital is no exception. In recent years, with the continuous expansion of the hospital, and the medical needs increase, many hospitals have to strengthen the construction of network construction, information, network technology into hospital management has become an inevitable trend. The level of hospital management and the quality of the network technology has greatly improved, network technology has a positive effect on promoting the development of the hospital. But to ensure security and stability of the hospital network, the corresponding maintenance. This article will aim at the necessity and technical key points of the analysis and discussion of the hospital network maintenance.%随着时代的进步及现代科技的发展,计算机技术、网络技术、信息技术得到了广泛应用,21世纪是一个网络时代,各个领域都对网络进行了应用,医院也不例外。近些年来,随着医院规模的不断扩大,及人们对医疗需求的加大,众多医院纷纷加强网络建设、信息建设,网络技术融入医院经营管理中已经成为必然趋势。网络技术下医院管理水平和质量大大被提高,网络技术对促进医院发展建设有着积极作用。但是想要保障医院网络的安全和稳定,相应的维护必不可少。文章将针对医院网络维护的必要性和技术要点展开分析和讨论。

  18. 病案分组讨论教学法在临床心电图带教中的应用%Application of Medical Record Group Discussion Teaching Method in the Clinical Electrocardiogram Teaching

    Institute of Scientific and Technical Information of China (English)

    杨桂花

    2016-01-01

    Objective To study the application of medical record group discussion teaching method in the clinical electro-cardiogram teaching. Methods 200 cases of school students majoring in clinic in 2014 were selected as the research ob-jects, and divided into two groups with 100 cases in each according to the admission number, the traditional group adopted the teaching model mainly in analysis and explanation of class medical record, the discussion group adopted medical record group discussion teaching model, and the final grades and students' evaluation of teaching model of the two groups were observed. Results The operation ability and medical record analysis ability in the traditional group were lower than those in the discussion group and the comparison between groups had statistical significance, P0.05);100名学生对该病案讨论模式的平均肯定率为92.3%。结论在临床心电图教学中应用病案分组讨论方式可增加学生对该学科自主学习意识,提升对心电图的了解与掌握,减少该学科学生期末的挂科率,有效增加临床学生对心电图的全面掌握和对疾病判断思维的培养。

  19. 医院集团财务集中管理探讨%Discussion into the Centralization of Financial Management of Hospital Group

    Institute of Scientific and Technical Information of China (English)

    罗庆华

    2015-01-01

    In order to configure the hospital asset rationally, exert the advantage of group and enhance the efficiency of capital operations, the financial management of hospital group must be centralized. The advantages of centralization of financial management were analyzed. The feasible schemes for centralization of financial management of hospital group were put forward. The attentive questions in the course of centralization of financial management were pointed out.%医院集团财务集中管理能更合理地配置医院资产、发挥集团优势及提高资本运营效率。该文分析财务集中管理的优点,提出医院集团财务集中管理的切实可行的实施方案,指出实行财务集中管理中应注意的问题。

  20. Characterizing Communication Networks in a Web-Based Classroom: Cognitive Styles and Linguistic Behavior of Self-Organizing Groups in Online Discussions

    Science.gov (United States)

    Vercellone-Smith, Pamela; Jablokow, Kathryn; Friedel, Curtis

    2012-01-01

    In this study, we explore the cognitive style profiles and linguistic patterns of self-organizing groups within a web-based graduate education course to determine how cognitive preferences and individual behaviors influence the patterns of information exchange and the formation of communication hierarchies in an online classroom. Network analysis…

  1. What is CCZN-armalcolite? A crystal-chemical discussion and an ad-hoc incursion in the crichtonite-minerals group

    Directory of Open Access Journals (Sweden)

    Gavril Sabau

    2007-10-01

    Full Text Available The status of CCZN-armalcolite, commonly still believed to be a variety of armalcolite s.s., is questionable in view of partial evidence suggesting that it would represent a distinct phase, as initially claimed by its discoverers. Because of the rarity of the mineral, combined with its habitual small grain-size, no successful structural investigation could be undertaken so far. Therefore we attempted a chemical overview of existing and original data pertaining to CCZN-armalcolite. With the view of systematizing structure-composition relationships, we analyzed the topology of large cations – bearing close-packed oxides, while extending the nomenclature in use in order to accommodate further topologies. By using relevant chemical plots, a fair compositional match between CCZN-armalcolite and the crichtonite group minerals was demonstrated, as well as a chemical incompatibility with armalcolite. Stoichiometric crichtonite compositions and matching optical properties allowed identification of at least part of “CCZN-armalcolites” with the mineral loveringite of the crichtonite group. A detailed inspection of structure-composition relationships in crichtonites allowed an insight in their trends and range of chemical variation, as well as a comparison between them and a group of “CCZN-armalcolites” slightly differing from known crichtonites. These “CCZN-armalcolites” departing from normal chemical trends in crichtonites either represent an ordered variety of non-stoichiometric crichtonite or a new group of close-packed oxides. Their composition clustering around formula AM16O30 is temptingly consistent with an hypothetical structure intermediate between magnetoplumbites and crichtonites, based on close-packed stacking of layers made up by triangular clusters of octahedra, stuffed with large cations. A model of such a structure, not encountered so far in minerals, is outlined, displaying a hexagonal symmetry P , with a ≈ 7.45Å and c

  2. Discussion on Human Resource Management of Medical Group%集团型医疗机构人力资源管理的探讨

    Institute of Scientific and Technical Information of China (English)

    林平平

    2016-01-01

    在现行医疗制度改革形势下,为使医疗资源被最大化利用,各医疗机构进行集团化的整合已成为新型的组织模式,随之医疗集团的人力资源管理也必须进行相应的改革创新。本文以台州恩泽医疗中心(集团)为例,介绍了医疗集团人力资源统一管理的实践探索,并由此带来的作用以及存在的一些难点问题。%Under the environment of current medical system reform, in order to maximize the use of medical resources, group integration of medical institutions has become a new organization model. Therefore, human resource management of the medical group should also have corresponding reform and innovation. This paper takes Taizhou Enze Medical Center (Group) as an example and introduces the exploration and practice of unified human resources management, the effect of management and some existing difficult problems.

  3. 浅议陕西煤化集团并购重组工作%Discussion of mergers and acquisitions work in Shaanxi Coal and Chemical Industry Group

    Institute of Scientific and Technical Information of China (English)

    邹贵武

    2015-01-01

    This paper introduced the main methods of mergers and acquisitions work , summarized the experiences of mergers and acquisitions work and analyzed the effects of mergers and acquisitions work during the development process of Shaanxi Coal and Chemical Industry Group .%介绍了陕煤化集团在发展过程中,实施并购重组工作的主要做法,总结了开展并购重组工作经验,并以具体实例说明了集团实施并购重组工作的效果。

  4. 基于视知觉理论的建筑群体表情初探%Brief Discussion on Building Group Expression Based on Visual Perception Theory

    Institute of Scientific and Technical Information of China (English)

    吴伟; 张伟

    2012-01-01

      According to disorderly and repetitive City Scape under the context of current urban construction, this paper Consider the thought of ‘building group' as the media of Architectural design and Architectural design.On this basis,it puts forward the concept of ‘building group expression’and make preliminary inquiry to it according to the visual perception gestalt theory, hoping to research the important role of it in shaping city style and feature from a new perspective.%  针对当前城市建设背景下中千城一面、杂乱无章的城市面貌,该文提出以“建筑群体”思想作为连接建筑设计与城市规划的中间层次,在此基础上提出“建筑群体表情”的概念,并根据视知觉完形理论对其进行了初步的探究,希望从新的角度思考其在塑造城市风貌方面的的重要作用。

  5. Panel discussion

    Energy Technology Data Exchange (ETDEWEB)

    No Author Given

    1975-01-01

    Panel discussion: summation and future projections. Introductory remarks by panelists followed by questions and comments from the floor. Panelists: Dr. Joseph Barnea (former director of Resources and Transport for the United Nations; energy consultant to the United Nations Institute for Training and Research (UNITAR)); the Honorable Clyde F. Bel, Jr. (member of the Louisiana House of Representatives representing District 90 and New Orleans); Dr. David Lombard (acting chief of the Advanced Systems Branch of the Division of Geothermal Energy Research and Technology, Energy Research and Development Administration (ERDA)); Fred C. Repper (vice-president of Central Power and Light Company in Corpus Christi, Texas); Dr. Hans Suter (environmental consultant in Corpus Christi, Texas; environmental columnist for the Corpus Christi Caller Times). Session chairman: Herbert Woodson.

  6. Discussion on the Group Cooperation in the Efficient Classroom%浅谈高效课堂中的小组合作

    Institute of Scientific and Technical Information of China (English)

    孙琴; 刘爱枝

    2014-01-01

    改变学生学习方式是新一轮基础教育课程改革的核心,而合作学习是课改倡导的重要学习方式之一。让学生的行为、认知、情感参与到小组合作中来,使合作学习具有实效。%Changing students’learning style is the core of a new round of basic education curriculum reform, and cooperative learning is one of the important study way that curriculum reform advocates. Let the students’ behavior, cognition, emotion involved in the group work, make the cooperative learning results.

  7. Discussion on Connection Group of Three-phase Transformer%浅谈三相变压器的连接组别

    Institute of Scientific and Technical Information of China (English)

    于红

    2013-01-01

    三相变压器的联结组是三相变压器的难点问题之一,通过三相变压器绕组的联结,进一步的说明了三相变压器的联结组及其简单的判定方法---时钟序数表示法,最后对标准联结组进行了详细的说明。%The connection symbol is one of the difficult problems of three-phase transformer, through the connection of the three-phase transformer winding, the paper further illustrates the connection symbol and simple methods---clock ordinal notation of three-phase transformer, finally carries on the detailed instructions for standard connection group.

  8. Discussion on stable increase of foreign trade of Datong Coal Mine Group%同煤集团稳定外贸增长初探

    Institute of Scientific and Technical Information of China (English)

    唐晓龙

    2013-01-01

    Influenced by the slow development of international economy,the spread of global economic crisis and the protectionism of international trade,the export of state-owned trade enterprises has been blocked seriously and the trade environment has been continually worsening.How to keep the stable increase of foreign trade business in such complex and severe environment was discussed from ac-tively utilizing preferential policies and actively expanding trade scope,and so on.%受世界经济放缓、全球金融危机蔓延以及国际贸易保护主义等不利因素影响,国有外贸企业出口严重受阻,贸易环境不断恶化。从积极争取利用优惠政策、积极拓展业务种类等方面探讨了在复杂和严峻的外贸形势下,如何保持外贸业务的稳定增长。

  9. The Homomorphic Key Agreement

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    There are various challenges that are faced in group communication, so it is necessary to ensure session key. Key agreement is the fundamental cryptographic primitive for establishing a secure communication. It is a process of computing a shared secret contributed by two or more entities such that no single node can predetermine the resulting value. An authenticated key agreement is attained by combining the key agreement protocol with digital signatures. After a brief introduction to existing key agreement in group communication, Making use of the additive-multiplicative homomorphism in the integer ring defined by Sander and Tschudin: A new protocols, called the homomorphism key agreement, was designed, which can be self-contributory, robust, scalable and applicable in group communication.

  10. Discussion on Comprehensive Budget Management of Group Enterprise%浅谈集团企业的全面预算管理

    Institute of Scientific and Technical Information of China (English)

    张祖兴

    2011-01-01

    Since the reform and opening up, our business has got rapid development, especially for large enterprise groups, there are nearly 30 enterprises list in top 500 global corporations. However, besides the number and size, the management level of enterprises still has a certain gap with international multinational corporations. This article describes related budget management theories and models in detail and proposes the improvement suggestions to the problems.%改革开放以来,我们企业得到了高速发展,特别是大型集团企业,目前已有将近30家栖身世界500强.但除了人数和规模以外,企业的综合管理水平还与国际跨国企业有一定差距.文章对企业通过全面预算的相关理论和模式管理进行了详细梳理,并就其中存在的问题给出了整改建议.

  11. Discussion on higher vocational college website group construction and management%浅谈高职院校网站群的建设和管理

    Institute of Scientific and Technical Information of China (English)

    倪喜琴

    2012-01-01

    随着学校网站数量的不断增加,如何有效地组织和管理这些网站及其海量信息,已成为众多学校领导及信息主管所关心的问题,分析了当前高职院校网站的现状,提出了用Webplus技术建设与管理网站群的思路,它不仅方便了管理员的统一管理,而且提高了系统的安全性、稳定性、可扩展性、易使用性、美观性,同时也降低了网站的总体建设成本,是提升网站管理与绩效的有效手段.%With the increasing number of school website, how to effectively organize and manage the site as well as the mass of information, has become a large number of school leadership and information director concerns, this article analyzes the current higher vocational institute website present situation, put forward to use webplus technology to construction and management of website group train of thought, it is not only convenient for the administrator of the unified management, and to improve the system security, stability, scalability, usability, aesthetics, but also reduces the overall cost of website construction, is to promote the site management and performance of the effective means.

  12. The Making of discussion groups in a combined process of internal evaluation of safety culture; La realizacion de grupos de discuion en un proceso combinado de evaluacion interna de cultura de seguridad

    Energy Technology Data Exchange (ETDEWEB)

    German, S.; Buedo, J. L.; La Salabarnada, E.; Navajas, J.; Silla, I.

    2012-07-01

    The purpose of this paper is to show the design and evaluation of safety culture conducted in the Cofrentes nuclear plant. The process has combined the use of different methodologies and techniques and has allowed the participation of different internal and external stake holders. For internal assessment discussion groups were conducted. These groups, which were designed and analyzed by the CIEMAT, were led by employees from different levels of Cofrentes.

  13. 论网络新闻“定调文本”确定的影响因素%Discussion on the Effective Factors of Key-text of Online News

    Institute of Scientific and Technical Information of China (English)

    聂志腾

    2015-01-01

    在网络新闻中,多文本的使用可以说是常态。然而,多文本的使用,自然会带来多种文本表意的“众声喧哗”。为了避免各文本信息的冲突,网民在对网络新闻中各文本进行联合解码时,会选择其中某一文本作为“定调文本”。而“定调文本”的确定受“文本真实性、文本清晰度和网民对文本所涉及主题的经验程度”三大因素影响,网民正是以“定调文本”为核心和框架来解读、建构网络新闻的意义。%It is a common phenomenon that there are many texts used in one online news, and the using of multi-texts brings many discourses in one online news. For avoiding the conflict of discourse of multi-texts, the paper tends to choose one text as key-text in decoding online news texts. This paper supposes that the choosing course of key-text is influenced by text authenticity, text clarity, and the experience of the theme, and the paper exactly uses the key-text for reading and constructing the meaning of online news.

  14. Complementary description of Colomerus novahebridensis Keifer (Acari, Eriophyidae), with a discussion about the constitution of the genus and its economic importance, and a tentative key to Colomerus Newkirk & Keifer species.

    Science.gov (United States)

    Chandrapatya, Angsumarn; Konvipasruang, Ploychompoo; Flechtmann, Carlos H W; de Moraes, Gilberto J

    2014-01-01

    Colomerus Newkirk & Keifer, 1971 is an eriophyid genus described by Newkirk and Keifer about 43 years ago, that contains species from all continents, except Antarctica. They live mostly on dicotyledonous plants. Colomerus novahebridensis Keifer, 1977 was described from coconut (Cocos nucifera L., Arecaceae) fruits from Vanuatu. A description of a Thai population of this species is given in this paper. A revised characterization of Colomerus and a dichotomous key for the separation of the species presently considered to belong to this genus are provided, and a consideration about the importance of Colomerus species is presented.

  15. Complementary description of Colomerus novahebridensis Keifer (Acari, Eriophyidae, with a discussion about the constitution of the genus and its economic importance, and a tentative key to Colomerus Newkirk & Keifer species

    Directory of Open Access Journals (Sweden)

    Angsumarn Chandrapatya

    2014-08-01

    Full Text Available Colomerus Newkirk & Keifer, 1971 is an eriophyid genus described by Newkirk and Keifer about 43 years ago, that contains species from all continents, except Antarctica. They live mostly on dicotyledonous plants. Colomerus novahebridensis Keifer, 1977 was described from coconut (Cocos nucifera L., Arecaceae fruits from Vanuatu. A description of a Thai population of this species is given in this paper. A revised characterization of Colomerus and a dichotomous key for the separation of the species presently considered to belong to this genus are provided, and a consideration about the importance of Colomerus species is presented.

  16. The Use of Discussion.

    Science.gov (United States)

    Brunner, Edmund deS.; And Others

    Research on the use of discussion in adult education has been largely concerned with comparing it with the use of other instructional techniques and with measuring opinion change. Many studies, such as Kurt Lewin's study of food habits, have compared the effectiveness of group discussion as contrasted with lecture in changing opinions and…

  17. Site loading heavy application of emulsive explosive Discussion on key technologies in quality Control%现场混装车生产重乳化炸药应用中质量控制关键技术探讨

    Institute of Scientific and Technical Information of China (English)

    刘万荣; 王永德

    2013-01-01

    This paper introduces the production and application in site loading in Shenhuazhunneng Corporation explosive factory,the weight of emulsion explosive production process analysis,quality control key technology,reveal the field mixed explosive car in the application of large mines can improve production efficiency and scale at the same time, control,scientific and reasonable to ensure the quality of products is the key to the full play the role of the advanced process equipment.%介绍了现场混装车在神华准能公司炸药厂的生产应用,阐述重乳化炸药生产工艺流程、质量控制关键技术分析,揭示了现场混装炸药车在大型矿山的应用可以提高生产效率和规模的同时,合理科学的控制、确保产品质量是充分发挥该工艺设备先进性作用的关键。

  18. LOCKS AND KEYS SERVICE

    CERN Multimedia

    Locks and Keys Service

    2002-01-01

    The Locks and Keys service (ST/FM) will move from building 55 to building 570 from the 2nd August to the 9th August 2002 included. During this period the service will be closed. Only in case of extreme urgency please call the 164550. Starting from Monday, 12th August, the Locks and Keys Service will continue to follow the activities related to office keys (keys and locks) and will provide the keys for furniture. The service is open from 8h30 to 12h00 and from 13h00 to 17h30. We remind you that your divisional correspondents can help you in the execution of the procedures. We thank you for your comprehension and we remain at your service to help you in solving all the matters related to keys for offices and furniture. Locks and Keys Service - ST Division - FM Group

  19. Socio-economic dietary inequalities in UK adults: an updated picture of key food groups and nutrients from national surveillance data.

    Science.gov (United States)

    Maguire, Eva R; Monsivais, Pablo

    2015-01-14

    Socio-economic differences in diet are a potential contributor to health inequalities. The present study provides an up-to-date picture of socio-economic differences in diet in the UK, focusing on the consumption of three food groups and two nutrients of public health concern: fruit and vegetables; red and processed meat; oily fish; saturated fats; non-milk extrinsic sugars (NMES). We analysed data for 1491 adults (age ≥ 19 years) from the National Diet and Nutrition Survey 2008-2011. Socio-economic indicators were household income, occupational social class and highest educational qualification. Covariate-adjusted estimates for intakes of fruit and vegetables, red and processed meat, and both nutrients were estimated using general linear models. Covariate-adjusted OR for oily fish consumption were derived with logistic regression models. We observed consistent socio-economic gradients in the consumption of the three food groups as estimated by all the three indicators. Contrasting highest and lowest levels of each socio-economic indicator, we observed significant differences in intakes for the three food groups and NMES. Depending on the socio-economic indicator, highest socio-economic groups consumed up to 128 g/d more fruit and vegetables, 26 g/d less red and processed meat, and 2·6% points less NMES (P< 0·05 for all). Relative to lowest socio-economic groups, highest socio-economic groups were 2·4 to 4·0 times more likely to eat oily fish. No significant patterns in saturated fat consumption were apparent. In conclusion, socio-economic differences were identified in the consumption of food groups and one nutrient of public health importance. Aligning dietary intakes with public health guidance may require interventions specifically designed to reduce health inequalities.

  20. Discussion on several key problems in advanced treatment engineering for pulp and paper eflfuent%制浆造纸废水深度处理工程中几个关键问题的探讨

    Institute of Scientific and Technical Information of China (English)

    洪卫; 刘勃; 冯晓静; 庄会栋; 季华东

    2014-01-01

    Aiming at the oxydation technology and the mimic enzyme catalysis technology applied in the advanced treatment of pulp and paper mill efluent in domestic, several key problems of waste acid liquid, usage of peroxide hydrygen, the choice of alkali resource for neutralyzation, the control of the biochemical target and reuse of reclaimed water were studied and the guiding suggestions were proposed.%针对目前国内制浆造纸企业废水深度处理工程中广泛应用的Fenton氧化技术和仿酶催化技术,探讨了废酸液的使用、过氧化氢的使用、中和碱源的选择、生化出水指标的控制、中水回用等几个关键问题,并给出了指导性建议。

  1. A revised key to the Nitocrella species of the hirta-group, including the description of a new species from phreatic waters of Lesbos, Greece (Copepoda Harpacticoida: Ameiridae)

    NARCIS (Netherlands)

    Pesce, Giuseppe Lucio

    1983-01-01

    Nitocrella maggii n.sp. from phreatic subterranean waters of the island of Lesbos, Greece, is described. The new species belongs to the of species sensu Petkovski and differs from the other known species of the group in the P2-P4 endopod setation, as well as in the fused basiendopod of P5. A revised

  2. Key cytokines of adaptive immunity are differentially induced in rainbow trout kidney by a group of structurally related geranyl aromatic derivatives.

    Science.gov (United States)

    Valenzuela, Beatriz; Obreque, Javiera; Soto-Aguilera, Sarita; Maisey, Kevin; Imarai, Mónica; Modak, Brenda

    2016-02-01

    Filifolinone is a semi-synthetic terpenoid derivative obtained from Heliotropium filifolium that increases the expression level of pro-inflammatory and anti-inflammatory cytokines in kidney cells of salmon. Because cytokines are produced in response to a foreign organism and by distinct other signals modulating immune responses, we further studied the potential immunomodulatory effects of a group of structural related terpenoid derivatives from H. filifolium on salmonids to determine the relationship between the chemical structure of the derivatives and their ability to modify cytokine expression and the lymphoid content. The resin and four 3H-spiro 1-benzofuran-2,1'-cyclohexane derivatives were tested in vivo in rainbow trout (Oncorhynchus mykiss) by quantifying the transcript levels of antiviral and T helper-type cytokines and T and B cells in the kidney. Three of the four terpenoids differ only in the C-7'substituent of the cyclohexane and the presence of the ketone group at this position in Filifolinone appeared responsible of an important up-regulation of IFN-α1, IFN-γ, IL-4/13A and IL-17D in the kidney of the treated trout. In addition, the absence of a methoxy group in carbon 7 of the benzene ring, found in all compounds but not in Folifolinoic acid, produced a significant reduction of IFN-γ, IL-12 and IL-4/13A transcripts. B cells were not affected by the compound treatment but Filifolinoic acid and the resin induced a significant reduction of T cells. Altogether, results showed that immunomodulating responses observed in the trout by effect of 3H-spiro 1-benzofuran-2,1'-cyclohexane derivatives is related to the presence of the ketone group in the carbon 7' and the methoxy group in carbon 7 of the benzene ring, being Filifolinone the most active immunostimulatory compound identified.

  3. 创建世界一流学科导向下的国家重点实验室建设探讨%Discussion on construction of state key laboratory leaded by creating world-class discipline

    Institute of Scientific and Technical Information of China (English)

    刘国瑜

    2016-01-01

    The world-class discipline is a target system referring to the top level of similar discipline in the world.It is a relative concept with limitations of time and space.And it is a reflection of the top level of the development of a kind of discipline and the strongest state of its comprehensive strength in a certain stage of social development or at present.State key laboratory has the role of promoting the construction of discipline teams,enhancing the level of scientific and technological innovation,improving the quality of personnel training,improving the academic material conditions and creating a strong academic atmosphere.It is an important support for creating world-class discipline.In order to promote the formation of the world-class discipline,it should be concise research direction,gather academic team,pursue academic excellence and cultivate top-notch talents during the construction of state key laboratory.%世界一流学科是以国际上同类学科的最高水平为参照的目标体系,是具有时空局限性的相对概念,反映社会发展历程中某阶段或现实中某类学科发展的最高水平及其综合实力的最强状态。国家重点实验室具有促进学科队伍建设、提升科技创新水平、提高人才培养质量、改善学术物质条件、营造浓郁学术氛围的作用,是创建世界一流学科的重要支撑。为促进世界一流学科的形成,国家重点实验室建设应凝练研究方向,汇聚学术队伍,追求学术卓越,培养拔尖人才。

  4. Discussion on the Key Technology of Fire Protection Design for the Drainage in High-rise Building%浅谈高层建筑给排水消防设计关键技术

    Institute of Scientific and Technical Information of China (English)

    刘兰香

    2014-01-01

    The design of water supply and fire safety in hi-gh-rise building is involved in an important aspect of personal and property safety of the people. This paper first discusses the particularity of fire design of water supply and drainage, and carries on the analysis to the design gist of drainage system of fire control, respectively discusses the design of fire water pu-mp room, automatic sprinkler system, fire hydrant water sup-ply system, water pool and pressurized facilities.%高层建筑中的给水消防安全设计是牵涉到人们人身和财产安全的重要方面。本文首先探讨了建筑给排水消防设计的几个特殊性,并就给排水消防系统的设计要点进行了分析,分别论述了消防水泵房、自动喷水灭火系统、消防水池、消火栓和给水系统增压设施的设计。

  5. Discussion on the Key Points of Teaching Supervision Construction Based on the Features of Independent Col- leges%基于独立学院特色谈教学督导建设的着力点

    Institute of Scientific and Technical Information of China (English)

    杨华萍

    2014-01-01

    The teaching quality of independent colleges cannot be improved in isolation from the role of teaching supervision, as in-dependent colleges, different from common public colleges, pos-sess many distinctive features and characteristics in education and teaching. This paper focused on the characteristics and cur-rent situation of teaching supervision construction in independent colleges, analyzed the key and different points for supervisors in their work, and proposed personal views on the construction of supervision system in independent colleges.%独立院校教学质量的提高离不开教学督导作用的发挥,独立院校不同于一般的公立学校,有着许多自身办学、教学的特色和特点。本文重点阐述了独立院校督导建设的特点及现状,分析了督导员在开展工作过程中遇到的重点和难点,并就独立院校督导制度的建设提出自己的观点与看法。

  6. Sets, Subsets, and Dichotomous Keys

    Science.gov (United States)

    Cole, E. James

    1973-01-01

    Discusses the procedures that should be observed in constructing a dichotomous key. The keying exercise described was used as a laboratory activity in a biology course for elementary education majors, however it could be used in other courses. (JR)

  7. JB/T4730.11射线数字成像标准制定的关键技术探讨%The Key Technology Discussing of JB/T 4730. 11 Digital Radiography Standard Setting

    Institute of Scientific and Technical Information of China (English)

    梁丽红

    2011-01-01

    In order to popularize application of digital radiography technology in the special equipment field, and promote the special inspecting level in nondestructive testing industry, improve the efficiency of special equipment inspecting, and reduce the inspecting complexity for staff, and decrease environmental pollution. The advanced technology of digital radiography should be masted and the relevant testing standards should be established. Some key technologies of standards setting include: ① The components of digital radiography system in standards. ② The differences of image quality evaluation between digital radiography and film radiography. ③ The consistency and equivalence between digital radiography and film radiography. ④other technologies should be concerned in digital radiography.%为在特种设备行业推广和应用射线数字成像检测技术。提高特种设备检测效率、降低检测人员的工作强度、减少环境污染,提升特检行业的无损检测水平,必须掌握先进的数字成像检测技术,制定相关的检测标准。以下是标准制定的几个关键问题:①标准包含的射线数字成像检测系统及其内容。②数字成像与胶片照相像质评价指标的区别。③数字成像与胶片照相像质的等效问题。④数字成像技术应用应关注的其它问题。

  8. 对制约少数民族地区旅游发展的几个关键问题的探讨%A Discussion on Several Key Problems Restricting the Tourism Development in the Minority Areas

    Institute of Scientific and Technical Information of China (English)

    黄咏梅

    2016-01-01

    Ethnic tourism, as a special form of tourism, attracts more and more tourists' attention. Based on the development of national tourism in China, this paper starts with the study of the key problems restricting the development of tourism in the ethnic minority areas, and analyzes the problems restricting the development of ethnic minority areas from the cultivation of tourism talents in ethnic minority areas, value and property rights definition of the tourism attraction in minority areas, wisdom tourism, tourism crisis management and other issues. The countermeasures of tourism development are put forward to make the tourism of ethnic areas get a better sustainable development.%民族旅游作为旅游的一种特殊形式,越来越引起广大旅游者关注.本文结合我国民族旅游的发展现状,从研究制约少数民族地区旅游发展的关键问题入手,对制约少数民族地区旅游发展中几个问题,围绕民族地区本土化特色旅游人才培养,民族地区旅游吸引物的价值及产权界定,智慧旅游,旅游危机管理等方面问题进行探讨.提出旅游发展的应对措施,使民族地区的旅游得到更好的可持续发展.

  9. Discussion on System Scheme and Key Technology of Mobile Internet for Telecom Operators%运营商应对移动互联网的系统方案和关键技术

    Institute of Scientific and Technical Information of China (English)

    张成强; 许国平

    2015-01-01

    In the era of mobile Internet,telecom industry envisages great chal enges of OTT services,meanwhile,this also brings valu-able opportunities to telecom industry. Telecom operators can employs the platform operation to achieve win-win business opportunities and business success for the whole business ecosystem,including users,OTT service developers,Internet companies as wel as vertical industry applications etc. It investigates the commercial ecosystem of mobile Internet as wel as the new environment of mobile network in details. Then,it describes the architecture of mobile network response system and its required key functionalities. Final y,it introduces both the basis already for the implementation of this mobile network re-sponse system,and its further direction.%移动互联网时代,电信产业在受到OTT业务巨大冲击的同时,也获得了难得的机遇。电信运营商可以通过平台化运行,为用户、OTT业务开发商、互联网公司、垂直行业应用商家等组成的商业生态系统创造多边、多产业互利共赢的商业机会,进而获得持续性的商业成功。详细阐述了移动互联网时代商业生态系统和移动网络面临的新环境,进而提出移动网络响应系统架构和需要实现的关键技术,最后指出响应系统方案实施已具备的基础和需要深入的方向。

  10. A Provable Secure Group Key Agreement Protocol with Fault-Tolerant%一种故障容忍的可证安全组密钥协商协议

    Institute of Scientific and Technical Information of China (English)

    郑明辉; 周慧华; 崔国华; 韩兰胜

    2009-01-01

    对Burmester等人提出的非认证组密钥协商协议的安全性进行了深入分析,指出该协议不能抵抗内部恶意节点发起的密钥协商阻断攻击和密钥控制攻击.提出了一种故障容忍的组密钥协商(FT-GKA)协议,FT-GKA协议在密钥协商过程中加入了消息正确性的认证机制,该机制利用数字签名技术检测组内恶意节点,并在驱逐恶意节点后保证组内诚实节点能计算出正确的会话密钥,解决了Burmester等人提出协议中存在的内部恶意节点攻击问题.并证明提出的协议在DDH假设下能抵抗敌手的被动攻击,在DL假设和随机预言模型下能够抵抗内部恶意节点发起的密钥协商阻断攻击和密钥控制攻击.理论分析与实验测试表明,提出的协议具有较高的通信轮效率和较低的计算开销.%This paper indicates that Burmester et al.'s group key agreement protocol which based on the authenticated broadcast channel is unable to withstand the disruption attack and key-control attack of malicious participants in group. These two attacks lead that other honest participants will compute different session key and other honest participants compute the fixed session key which is determined previously by malicious participants,respectively.In this paper,a fault-tolerant group key agreement (FT-GKA) protocol is proposed. Even if there are malicious participants trying to attack the establishment of a session key, all other honest participants following the proposed protocol are still able to compute the correct session key using the digital signature technology.Paper proves the protocol can withstand the passive attack of adversary under the DDH assumption, and the protocol can withstand the interrupted attack and key - control attack from malicious participants under the DL assumption and the random oracle model.Furthermore, the proposed protocol possesses both constant number of rounds and lower computation overhead.

  11. Discussion on Key Problems and Counter Measures of Logistics Management in Construction Supply Chains%工程供应链中物流管理的关键问题与对策研究

    Institute of Scientific and Technical Information of China (English)

    李真; 杜建国; 孟庆峰

    2014-01-01

    Construction supply chain logistics management is quite important for performance. Firstly,according to the actual operation of project logistics,we build a conceptual model of construction supply chain logistics management. The characteristic and key issues in process of construction supply chain logistics management are proposed. In order to improve performance of construction supply chain logistics management,some strategies are proposed: constructing logistics operation principles like"integration","coordination" and "sharing";unified planning logistics systems and building reliable logistics network;building strategic partnerships with suppliers and integrating logistics transport capacity;building information sharing mechanisms between construction contractor and materials supplier. Those strategies aim to provide a theoretical basis for improving logistics and supply chain management project performance.%工程供应链物流管理对于工程系统绩效具有十分重要的意义。根据工程物流的实际运作情况,构建出工程供应链物流管理的概念模型并对其进行系统分析。在此基础上,提出了工程供应链物流管理的特点及其面临的关键问题;并遵循工程供应链物流管理的协调优化思想给出几点策略建议:构建“集成”、“协调”与“共享”的物流运作原则;统一规划物流运作系统,构建可靠的物流运作网络;与供应商构建战略伙伴关系,整合物流运营商的运输能力;构建施工承包商与物资供应商的信息共享机制等,旨在为提高工程供应链中物流管理的绩效提供理论依据。

  12. 电镀行业清洁生产审核技术要点的探讨%Discussion on technical key points of cleaner production audit for electroplating industry

    Institute of Scientific and Technical Information of China (English)

    蔡瑜瑄; 曾艳华; 林志凌; 田倩瑶

    2012-01-01

    在解读电镀行业清洁生产相关标准、法规与要求的基础上,探讨了电镀行业开展清洁生产审核需规范的问题,推荐电镀行业污染防治方法及清洁生产减排效益的计算方法.指出规范计量管理是电镀行业实施清洁生产的基础,提出审核应重点关注的技术操作要点.对规范清洁生产审核工作,实现电镀行业生产全过程污染控制及重金属减排有指导意义.%Some issues needing to be regulated for cleaner production audit in electroplating industry was discussed based on the interpretation of related cleaner production standards, regulations, and requirements. Some methods for prevention of pollution and for calculation of benefits from emission reduction were recommended. It is pointed out that the standardized management of measurement is the foundation of implementation of cleaner production in electroplating industry. The technical operation points needing more attention during an audit were presented. It is of guiding significance for regulating cleaner production audit and realizing pollution control during the whole production process as well as emission reduction of heavy metals in electroplating industry.

  13. Depth keying

    Science.gov (United States)

    Gvili, Ronen; Kaplan, Amir; Ofek, Eyal; Yahav, Giora

    2003-05-01

    We present a new solution to the known problem of video keying in a natural environment. We segment foreground objects from background objects using their relative distance from the camera, which makes it possible to do away with the use of color for keying. To do so, we developed and built a novel depth video camera, capable of producing RGB and D signals, where D stands for the distance to each pixel. The new RGBD camera enables the creation of a whole new gallery of effects and applications such as multi-layer background substitutions. This new modality makes the production of real time mixed reality video possible, as well as post-production manipulation of recorded video. We address the problem of color spill -- in which the color of the foreground object is mixed, along its boundary, with the background color. This problem prevents an accurate separation of the foreground object from its background, and it is most visible when compositing the foreground objects to a new background. Most existing techniques are limited to the use of a constant background color. We offer a novel general approach to the problem with enabling the use of the natural background, based upon the D channel generated by the camera.

  14. Staffs' and managers' perceptions of how and when discrete event simulation modelling can be used as a decision support in quality improvement: a focus group discussion study at two hospital settings in Sweden.

    Science.gov (United States)

    Hvitfeldt-Forsberg, Helena; Mazzocato, Pamela; Glaser, Daniel; Keller, Christina; Unbeck, Maria

    2017-06-06

    To explore healthcare staffs' and managers' perceptions of how and when discrete event simulation modelling can be used as a decision support in improvement efforts. Two focus group discussions were performed. Two settings were included: a rheumatology department and an orthopaedic section both situated in Sweden. Healthcare staff and managers (n=13) from the two settings. Two workshops were performed, one at each setting. Workshops were initiated by a short introduction to simulation modelling. Results from the respective simulation model were then presented and discussed in the following focus group discussion. Categories from the content analysis are presented according to the following research questions: how and when simulation modelling can assist healthcare improvement? Regarding how, the participants mentioned that simulation modelling could act as a tool for support and a way to visualise problems, potential solutions and their effects. Regarding when, simulation modelling could be used both locally and by management, as well as a pedagogical tool to develop and test innovative ideas and to involve everyone in the improvement work. Its potential as an information and communication tool and as an instrument for pedagogic work within healthcare improvement render a broader application and value of simulation modelling than previously reported. © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

  15. Writing a Discussion.

    Science.gov (United States)

    Smith, Sue; And Others

    A unit used in an Australian school to teach English-as-a-Second-Language (ESL) students how to write a discussion is described. The 3-week unit was planned and implemented jointly by an ESL resource teacher, class teacher, and teacher librarian. The class was divided into three heterogeneous groups, two of which were observed for this study and…

  16. Facilities removal working group

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    This working group`s first objective is to identify major economic, technical, and regulatory constraints on operator practices and decisions relevant to offshore facilities removal. Then, the group will try to make recommendations as to regulatory and policy adjustments, additional research, or process improvements and/or technological advances, that may be needed to improve the efficiency and effectiveness of the removal process. The working group will focus primarily on issues dealing with Gulf of Mexico platform abandonments. In order to make the working group sessions as productive as possible, the Facilities Removal Working Group will focus on three topics that address a majority of the concerns and/or constraints relevant to facilities removal. The three areas are: (1) Explosive Severing and its Impact on Marine Life, (2) Pile and Conductor Severing, and (3) Deep Water Abandonments This paper will outline the current state of practice in the offshore industry, identifying current regulations and specific issues encountered when addressing each of the three main topics above. The intent of the paper is to highlight potential issues for panel discussion, not to provide a detailed review of all data relevant to the topic. Before each panel discussion, key speakers will review data and information to facilitate development and discussion of the main issues of each topic. Please refer to the attached agenda for the workshop format, key speakers, presentation topics, and panel participants. The goal of the panel discussions is to identify key issues for each of the three topics above. The working group will also make recommendations on how to proceed on these key issues.

  17. The Discussion of the Effect of Irvin D. Yalom Group Counseling Intervention for Maladaptive College Freshmen%欧文·亚隆团体咨询对适应不良大学新生的干预初探

    Institute of Scientific and Technical Information of China (English)

    郭雯

    2016-01-01

    本文从存在主义视角来理解大学新生的适应问题,并探讨存在主义的欧文·亚隆团体干预大学新生适应不良问题的适用性和效果。%In this paper, the maladaptation of college freshmen has been discussed in the perspective of existentialism, as well as the effect of Irvin D. Yalom group counseling intervention for maladaptive college freshmen.

  18. Frontalunterricht oder interaktive Gruppenarbeit? Ein Vergleich des Lernerfolgs und der studentischen Evaluation für das Fach Biochemie [Didactic lecture or interactive group discussion? A comparison of the learning success and the student evaluation in biochemistry

    Directory of Open Access Journals (Sweden)

    Kadmon, Martina

    2009-05-01

    Full Text Available [english] Aims: Interactive, student-centered teaching methods have replaced traditional teacher-centered didactic formats in many modern medical curricula in the past few years. However, in the natural sciences such as biochemistry, interactive teaching methods are not well proven. The present study was conducted to compare the effect of the teaching format on the performance of undergraduate students in biochemistry and their evaluation of the respective format. Methods: A total of 421 second-year students were randomized into two groups: The control group was taught in a traditional lecture-like format, whereas the study group dealt with the same topic in an interactive group discussion. At the end of each lesson, students performed a multiple-choice test and completed a questionnaire. The same MCQ test was repeated 4–6 weeks after the last lesson. Results: Students who were taught in a lecture-like format performed significantly better in the first MCQ test immediately after the lesson than students taught in the interactive format. However, in the second MCQ test, there was no difference between the two groups. In the questionnaire, students rated the lecture-based course significantly better than the interactive group discussion. Conclusion: One reason why students prefer a didactic lecture to an interactive group discussion might be due to the subject biochemistry, which is strongly knowledge-based. Students perceived that the transfer of knowledge by a professional lecturer was more effective than the knowledge obtained in a student-centered discussion group. Other reasons might be the method of assessment and the overall design of the curriculum. [german] Zielsetzung: Interaktive, Lerner-orientierte Unterrichtsmethoden werden vielfach mit moderner und guter Lehre in Verbindung gebracht und ersetzen zunehmend konventionellen, Lehrer-zentrierten Frontalunterricht. In naturwissenschaftlichen Fächern, wie Biochemie, sind interaktive

  19. Regional chiefs meet to discuss key issues / Ella Karapetyan

    Index Scriptorium Estoniae

    Karapetyan, Ella

    2009-01-01

    Stockholmis toimunud Põhja- ja Baltimaade peaministrite kohtumisel räägiti energiajulgeolekust, praegusest majandusolukorrast ja detsembris toimuva ÜRO kliimakonverentsi ettevalmistustest. Andrus Ansip rõhutas uue rahvusvahelise kliimalepingu tähtsust

  20. Regional chiefs meet to discuss key issues / Ella Karapetyan

    Index Scriptorium Estoniae

    Karapetyan, Ella

    2009-01-01

    Stockholmis toimunud Põhja- ja Baltimaade peaministrite kohtumisel räägiti energiajulgeolekust, praegusest majandusolukorrast ja detsembris toimuva ÜRO kliimakonverentsi ettevalmistustest. Andrus Ansip rõhutas uue rahvusvahelise kliimalepingu tähtsust

  1. Key Issue

    Directory of Open Access Journals (Sweden)

    Oya Y Rieger

    2012-03-01

    Full Text Available A few months ago, while I was participating in a conference about open access infrastructures, a delegate from a governmental agency asked, “Why does each library need to maintain a repository for their own scientists?” He was rightfully wondering if a broad collaboration in building a network of archives will provide a durable and extensible technology and service framework for ever-increasing digital scholarly content. The ensuing discussion did not offer a plausible response but accentuated that we do not have in place a plan for building an expandable infrastructure to facilitate communication and exchange of information among rapidly proliferating distinct instances of institutional and subject repositories.

  2. A Research of the Major Administrative Decision-making Group Discussion and Decision System%重大行政决策的集体讨论决定制度研究

    Institute of Scientific and Technical Information of China (English)

    赵娜; 方卫华

    2014-01-01

    重大行政决策集体讨论决定制度是指对于重大行政问题,必须充分讨论,集体决定,坚决反对个人说了算或少数人专断。重大行政决策是否科学化、民主化,直接影响到政府行政管理活动的效能。重大行政决策集体讨论决定是民主集中制的直接体现,能够避免在重大行政问题决策上的失误。通过分析和研究重大行政决策集体讨论决定制度的发展现状及其运行的规则和程序,发现中国重大行政决策缺乏统一的集体讨论决定程序,行政机关缺乏民主决策意识,社会公众缺乏民主参政意识及行政决策监督滞后等一系列局限性,指出惟有建立统一高效的重大行政决策集体讨论决定程序、提高行政机关的民主决策意识、提高社会公众的民主参政意识和加强对行政决策的监督才能更好的完善中国重大行政决策的集体讨论决定制度。%The major administrative decision-making group discussion and decision system means that major adminis-trative problems must be conducted through full discussion and collective decision .Meanwhile , individual or a minor-ity of people's arbitrariness must be firmly opposed .Whether the major administrative decision-making is scientific and democratic , directly affects the effectiveness of government administrative management activities .Because the major administrative decision-making group discussion directly embodies the democratic centralism , major administra-tive decision-making errors can be avoided .In this paper , we study and analyze the development of the system of the status major administrative decision-making group discussion and decision system operation rules , procedures and lack of the unified collective discussion and decision procedure , administrative departments lack of democratic conscious-ness, the social public lack of democratic politics consciousness , administrative decision-making supervision

  3. Discussion-Induced Attitude Polarization

    Science.gov (United States)

    Myers, David G.

    1975-01-01

    Two experiments examined the hypothesis that the average of group members' responses following group discussion will generally be more extreme in the same direction as the average of individual pregroup preferences. (Author/MLF)

  4. Discussion on the Integrated Supporting and Requirements Designing of Group Customers Business%集团客户业务一体化支撑需求设计探讨

    Institute of Scientific and Technical Information of China (English)

    刘小发; 李良; 黄强华; 吕美嫦

    2014-01-01

    随着移动通信网络的不断升级和移动互联网业务的不断发展壮大,集团客户业务越来越成为运营商发展的重要战略市场。基于集团客户业务的发展现状、产品体系、系统支撑现状情况,从集团客户业务的基本特点出发,对集团客户业务的产品形态进行研究分析,针对集团客户业务个性化需求的特点,从客户、产品、业务等表现形式进行详细分析,对运营商集团客户业务需求支撑、产品设计、业务发展等进行研究探讨,提出一体化支撑需求设计。%With the development of mobile communication network and expansion of mobile Internet business, group customers busi-ness is increasingly becoming an important strategic market of the operators. Based on the current development of group cus-tomers business, products system, the present situation of system supporting, it researches and analyzes the production form from the basic characteristics of group customers business. It analyzes the display of customer, production, service and so on from the personalized needs of group customers business. It researches and discusses the demand supporting, production de-signing and business development of group customers business and proposes the integrated supporting and requirements de-signing.

  5. A Discussion with Jacques Derrida.

    Science.gov (United States)

    Derrida, Jacques

    1990-01-01

    Presents an edited transcript of a discussion held in April 1989 between Jacques Derrida and a group of students and professors concerning Derrida's "Afterword: Toward an Ethic of Discussion." Discusses Derrida's views on "deconstruction" as a term and a movement, the idea of arguments and persuasion, and specific power…

  6. 大学英语课堂小组活动在英语教学中的探讨%Discussion on Group Work of College English Classroom in English Teaching

    Institute of Scientific and Technical Information of China (English)

    欧阳志群

    2014-01-01

    The successful application of Group work depends on many aspects of English classroom, and it is one method used in the English classroom. On the basis of two task types (required and optional information exchange tasks ) University students and their interaction will be discussed. The fact shows that more interactional modification comes from the required exchange. At the same time, the topic of task plays an important role in group work, which benefits university students ’language acquisition and English teachers’leaching.%大学英语课堂小组活动顺利进行取决于课堂环境中的许多方面,也是英语课堂常常用到的方法。在信息轮流交换型和信息自由提供型两种任务类型的基础上,来探讨参加课堂小组活动的大学生以及他们的交互影响。实际表明,更多的交互修正产生来自于轮流交换型任务。课堂活动在大学生的语言习以及英语教师的教学水平提高方面都起着重要作用。

  7. Cryptographic Key Management System

    Energy Technology Data Exchange (ETDEWEB)

    No, author

    2014-02-21

    This report summarizes the outcome of U.S. Department of Energy (DOE) contract DE-OE0000543, requesting the design of a Cryptographic Key Management System (CKMS) for the secure management of cryptographic keys for the energy sector infrastructure. Prime contractor Sypris Electronics, in collaboration with Oak Ridge National Laboratories (ORNL), Electric Power Research Institute (EPRI), Valicore Technologies, and Purdue University's Center for Education and Research in Information Assurance and Security (CERIAS) and Smart Meter Integration Laboratory (SMIL), has designed, developed and evaluated the CKMS solution. We provide an overview of the project in Section 3, review the core contributions of all contractors in Section 4, and discuss bene ts to the DOE in Section 5. In Section 6 we describe the technical construction of the CKMS solution, and review its key contributions in Section 6.9. Section 7 describes the evaluation and demonstration of the CKMS solution in different environments. We summarize the key project objectives in Section 8, list publications resulting from the project in Section 9, and conclude with a discussion on commercialization in Section 10 and future work in Section 11.

  8. Modified World Café Discussion Model for Conference and Course Settings

    Science.gov (United States)

    Cassidy, Alice; Fox, Joanne

    2013-01-01

    A group facilitation technique called World Café usually involves dividing a large number of people into smaller groups at tables, exploring a variety of topics around a key focus, and collecting ideas from the discussions to debrief later as a large group. We used a modified version of World Café during the new Cracker Barrel session format at…

  9. Reconciling more than 150 years of taxonomic confusion: the true identity of Moenkhausia lepidura, with a key to the species of the M. lepidura group (Characiformes: Characidae).

    Science.gov (United States)

    Marinho, Manoela M F; Langeani, Francisco

    2016-05-03

    Moenkhausia lepidura (Kner) is redescribed based on the examination of the type and other specimens from several localities of the Amazon and Orinoco basins. The species is readly diagnosed from congeners by a combination of a dark blotch on the upper caudal-fin lobe, lower lobe hyaline, and by the arrangement of predorsal scales, in which scales of anterior portion of predorsal area are arranged in pairs, followed by a single median row of scales extending to dorsal-fin origin. The analysis of the type material of Gymnotichthys hildae Fernández-Yépez and Knodus calliurus Ahl demonstrated the former is a junior synonym of Moenkhausia lepidura, whereas the latter should be removed from its synonymy. An identification key to the Moenkhausia lepidura-group is provided.

  10. Grupos de discussão virtual: uma proposta para o ensino em enfermagem Grupos de discusión virtual: una propuesta para la enseñanza en enfermería Virtual discussion groups: a proposal for nursing teaching

    Directory of Open Access Journals (Sweden)

    Daiane Dal Pai

    2007-09-01

    émicos, el profesor y la estudiante, bien como momentos de reflexión y discusión sobre los temas confrontados en la práctica de enfermería.This paper describes a teaching experience aimed at providing interactivity to the technique of field diary by using a virtual learning environment. The educational proposal derives from the Federal University of Rio Grande do Sul (UFRGS's Teaching Training Program of the Stricto Sensu Post-Graduation Program in Nursing, in which the author, a Master's degree candidate, oriented by her advisor, proposed forming virtual discussion groups in order to write the field diary for an undergraduate discipline in Nursing, with the aim of providing an opportunity for a joint discussion of academic experiences in the realm of practice. The instructors of the discipline in which the proposal was developed also participated in the activities. The virtual technology gave new dynamism to the technique of field diary, making possible an exchange of experiences among the students, the instructor and the author, as well as moments of reflection and discussion regarding the themes faced in the Nursing practice.

  11. 对 Tasi 群密钥协商协议的改进及安全分析%Improvement and security analysis on Tasi’s group key agreement

    Institute of Scientific and Technical Information of China (English)

    霍丽娟; 李朝阳; 孙垒

    2015-01-01

    针对 J.L.Tsai 等人提出的移动环境下群密钥协商协议存在的安全缺陷,利用数字签名技术,对其进行了改进:在数字签名中加入序列号,用以标记签名和将要生成的群密钥的次序,并将序列号作为数字签名公开验证信息之一,从而实现对移动用户或者具有较强计算能力的节点所发送消息的及时验证.由安全分析可知,改进后的协议不仅具有原来的安全特性,而且可以抵抗重放攻击或冒充攻击.%Aimed at the security defect of group key agreement protocol for mobile environment proposed by J.L.Tsai,the protocol was improved by using the digital signature technology.That is,some serial numbers were inserted in the digital signatures so as to identify the signatures and the order of the group keys to be generated,and the serial numbers were used as part of public information to verify the digital signatures.So the freshness of messages sent by the mobile users or the powerful node could be checked.According to the security analysis,it is found that the improved protocol not only had the old security properties,but also could resist against impersonation attack or forgery attack.

  12. Key Statistics for Thyroid Cancer

    Science.gov (United States)

    ... and Treatment? Thyroid Cancer About Thyroid Cancer Key Statistics for Thyroid Cancer How common is thyroid cancer? ... remains very low compared with most other cancers. Statistics on survival rates for thyroid cancer are discussed ...

  13. 重庆市建立公共文化服务体系协调组工作的重难点%Key Points and Difficulties in Establishing Chongqing Public Cultural Service System Coordinating Group

    Institute of Scientific and Technical Information of China (English)

    彭泽明

    2014-01-01

    In order to differentiate Chongqing Public Cultural Service System Coordinating Group ( hereafter referred to as Coordinating Group) from formerly-established steering groups and bureau-level joint conferences, prompt leading departments to actually exercise their functions and perform their duties, as well as motivate relevant departments to make concerted efforts and cooperate close-ly, this paper explores the key points and difficulties in establishing the Coordinating Group such as working principles, risk aversion, main content and working procedures in order to provide refer-ences for the establishment of a harmonious, efficient, authoritative and sustaining public cultural service system in Chongqing.%为了使重庆市公共文化服务体系协调组有别于以往建立的领导小组和局际联席会议,使牵头部门切实发挥作用、履行职责,相关部门齐心协力、深度融合,本文从学理上对公共文化服务体系协调组建立的工作原则、风险规避、主要内容、工作流程四个重点、难点问题进行了初步探究,试图为重庆市建立和谐、高效、权威、持续的公共文化服务体系协调组提供借鉴和参考。

  14. New Viewpoint of Science Literacy Research:Discussion on Survey Method Targeted on Occupational Groups%科学素养研究的新视角:基于职业人群的测评方法探讨

    Institute of Scientific and Technical Information of China (English)

    王可炜; 陈曦; 梁皑莹; 羊芳明; 邓乔丹

    2012-01-01

    Based on the theory research for science literacy so far and its survey actuality, the article discussed a new survey model targeted on occupational groups and proposed a 5 - dimension survey system after analyzed science literacy structure and some main limitations on public survey. Furthermore, the article employed Fuzzy Analytic Hierarchy Process to bring forward a new method to determine the weights of the five dimensions, and developed a case survey targeted on traditional Chinese medicine professionals.%根据目前科学素养理论研究和测评现状,分析了公众“全民科学素养测评”存在的主要缺陷,探讨了从公众“全民科学素养测评”走向职业人群“分众科学素养测评”的新模式,分析了科学素养的结构并提出了五维度测评体系;同时,采用模糊层次分析法,提出了确定五维度权重的一种方法.在此基础上,对中医药从业人群的科学素养开展了案例测评,从而验证了职业人群测评的可行性.

  15. Self-healing group key management scheme with collusion resistance%具有抗合谋攻击能力的自治愈群组密钥管理方案

    Institute of Scientific and Technical Information of China (English)

    曹帅; 张串绒; 宋程远

    2011-01-01

    Random number and broadcast polynomial for every session were created. The legal nodes could recover the lost legal group keys by themselves independently according to their private information and broadcast messages, and the collusion attack between newly joined nodes and revoked nodes was resisted. New private information was distributed to revoked nodes so as to rejoin group in later sessions. Through the security and efficiency analysis, the scheme has less communication cost yet still achieves security property, suitable for mobile Ad Hoc network.%通过为每个会话时段产生随机数和构造广播多项式,使得合法用户根据自身秘密信息和当前广播消息,可以独立地恢复遗失的组密钥,而且能够抵抗被撤销节点和新加入节点的合谋攻击;此外,赋予被撤销节点新的秘密信息,使其能够重新加入群组参与会话.安全分析和性能分析表明:在保证安全属性的前提下,该方案具有较小的通信开销,能够适用于移动自组网.

  16. Morfologia comparada dos gêneros do grupo Merobruchus (Coleoptera: Chrysomelidae: Bruchinae: diagnoses e chave Comparative morphology of the genera of the group Merobruchus (Coleoptera: Chrysomelidae: Bruchinae: diagnoses and key

    Directory of Open Access Journals (Sweden)

    José Aldir P. da Silva

    2008-12-01

    Full Text Available Foi realizada uma análise comparativa com base na morfologia detalhada do adulto de sete gêneros: Caryedes Hummel, 1827, Ctenocolum Kingsolver & Whitehead, 1974, Gibbobruchus Pic, 1913, Meibomeus Bridwell, 1946, Merobruchus Bridwell, 1946, Penthobruchus Kingsolver, 1973 e Pygiopachymerus Pic, 1911, reunidos no agrupamento Merobruchus. Esse grupo está incluído em Acanthoscelidina Bridwell, maior subtribo de Bruchinae, e com limites imprecisos. Este estudo possibilitou descrever novos caracteres, levantar uma nova hipótese de relacionamento entre os gêneros, e apresentar uma diagnose para o grupo e seus gêneros, além de uma chave dicotômica. Também foi possível registrar pela primeira vez para o Brasil Caryedes godmani (Sharp, 1885 e C. longifrons (Sharp, 1885 e Dioclea virgata (Rich. Amshoff (Papilionoideae como uma nova planta hospedeira para C. godmani.A comparative analysis was carried out based on the detailed morphology of adults of seven genera: Caryedes Hummel, 1827, Ctenocolum Kingsolver & Whitehead, 1974, Gibbobruchus Pic, 1913, Meibomeus Bridwell, 1946, Merobruchus Bridwell, 1946, Penthobruchus Kingsolver, 1973, and Pygiopachymerus Pic, 1911, joined in the Merobruchus group. This group is included in Acanthoscelidina Bridwell, the largest subtribe of Bruchinae, and with imprecise limits. This study describes new characters, suggests a new hypothesis for the relationships among the genera, proposes diagnoses of the group and its genera, and provides a dichotomous key. It was also possible to record Caryedes godmani (Sharp, 1885 and Caryedes longifrons (Sharp, 1885 for the first time from Brazil and Dioclea virgata (Rich. Amshoff (Papilionoideae as a new host plant for C. godmani.

  17. Diplectanids from Mycteroperca spp. (Epinephelidae) in the Mediterranean Sea: Redescriptions of six species from material collected off Tunisia and Libya, proposal for the 'Pseudorhabdosynochus riouxi group', and a taxonomic key.

    Science.gov (United States)

    Chaabane, Amira; Neifar, Lassad; Justine, Jean-Lou

    2017-01-01

    Diplectanid monogeneans are gill parasites that can infect fish in huge numbers and thus become harmful, especially in maricultured fish. It is therefore useful to have taxonomic tools, such as keys, to identify species. The following diplectanid species from groupers of the Mediterranean Sea were studied: five species of Pseudorhabdosynochus Yamaguti, 1958, including P. riouxi (Oliver, 1986) Kritsky & Beverley-Burton, 1986 from the dusky grouper Mycteroperca marginata, P. enitsuji Neifar & Euzet, 2007, P. bouaini Neifar & Euzet, 2007, P. dolicocolpos Neifar & Euzet, 2007 and P. sinediscus Neifar & Euzet, 2007 from the goldblotch grouper M. costae, and Echinoplectanum echinophallus (Euzet & Oliver, 1965) Justine & Euzet, 2006 from the dusky grouper. New material was obtained from fish collected from off Tunisia and Libya and compared to the type-material and voucher specimens in museum collections. Identifications of fish were confirmed by barcoding of cytochrome c oxidase subunit I (COI) sequences. The sclerotized vagina was considered the most important structure for systematics. The three species P. riouxi, P. bouaini, and P. enitsuji share a common general structure of the sclerotized vagina with a conspicuous spherical secondary chamber. We thus propose the 'Pseudorhabdosynochus riouxi group' to accommodate them. Pseudorhabdosynochus dolicocolpos has an elongate vaginal structure that is completely different from all its congeneric species reported from the Mediterranean Sea, and Pseudorhabdosynochus sinediscus has a sclerotized vagina in which the secondary chamber is not visible, and a haptor without squamodiscs. A taxonomic key to diplectanid species on Mycteroperca spp. in the Mediterranean Sea is proposed; it includes ten species of Pseudorhabdosynochus and one species of Echinoplectanum.

  18. Conversational Markers of Constructive Discussions

    CERN Document Server

    Niculae, Vlad

    2016-01-01

    Group discussions are essential for organizing every aspect of modern life, from faculty meetings to senate debates, from grant review panels to papal conclaves. While costly in terms of time and organization effort, group discussions are commonly seen as a way of reaching better decisions compared to solutions that do not require coordination between the individuals (e.g. voting)---through discussion, the sum becomes greater than the parts. However, this assumption is not irrefutable: anecdotal evidence of wasteful discussions abounds, and in our own experiments we find that over 30% of discussions are unproductive. We propose a framework for analyzing conversational dynamics in order to determine whether a given task-oriented discussion is worth having or not. We exploit conversational patterns reflecting the flow of ideas and the balance between the participants, as well as their linguistic choices. We apply this framework to conversations naturally occurring in an online collaborative world exploration ga...

  19. Grupos de discussão na pesquisa com adolescentes e jovens: aportes teórico-metodológicos e análise de uma experiência com o método Discussion groups in the research with teenagers and youngsters: theoretical-methodological contributions and analysis of an experience with the method

    Directory of Open Access Journals (Sweden)

    Wivian Weller

    2006-08-01

    Full Text Available Trabalhar com grupos juvenis de contextos interculturais e sociais distintos àquele do pesquisador exige cuidado e rigor no procedimento e na escolha dos métodos a serem utilizados para a coleta de dados, assim como uma preparação para o trabalho de campo. Mesmo assim, o pesquisador será confrontado com códigos de comunicação e estilos de vida que lhe são alheios. A decodificação desses sistemas exige uma espécie de imersão do pesquisador no meio pesquisado e um controle metodológico permanente do processo de interpretação, de forma a evitar vieses ou afirmações distorcidas sobre a realidade social de seus entrevistados. Nos últimos anos, o número de dissertações e teses sobre infância e juventude tem aumentado consideravelmente. No entanto, pela necessidade de entregarmos os trabalhos nos prazos estipulados ou por atribuirmos ao referencial teórico maior grau de importância, poucas vezes nos dedicamos a reconstruir a trajetória percorrida durante a fase de coleta e análise dos dados empíricos e a justificar as escolhas teórico-metodológicas realizadas. O presente artigo reconstrói o percurso de uma pesquisa de campo realizada com jovens em São Paulo e em Berlim, apresenta os instrumentos utilizados na coleta de dados e analisa o emprego dos grupos de discussão como um método de pesquisa que privilegia as interações e uma maior inserção do pesquisador no universo dos sujeitos, reduzindo, assim, os riscos de interpretações equivocadas sobre o meio pesquisado.Working with groups of youngsters from social and intercultural contexts distinct from those of the researcher requires care and rigor in the procedure and choice of methods to be used in data collection, just as in the preparation for the fieldwork. Even so, the researcher will be confronted with codes of communication and lifestyles that are alien to him/her. The decoding of these systems demands a kind of immersion of the researcher into the medium

  20. Acquiring Knowledge from Asynchronous Discussion

    Science.gov (United States)

    Teo, Yiong Hwee; Webster, Len

    2008-01-01

    This article discusses a study which was designed to explore how online scaffolding can be incorporated to support knowledge acquisition in asynchronous discussion. A group of Singapore preservice teachers engaged in collaborative critiquing of videos before they embarked on their video projects to illustrate what constitutes good and bad video…