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Sample records for modelling coaching scaffolding

  1. A competence executive coaching model

    Directory of Open Access Journals (Sweden)

    Pieter Koortzen

    2010-07-01

    Research purpose: The purpose of this article is to address the training and development needs of these consulting psychologists by presenting a competence executive coaching model for the planning, implementation and evaluation of executive coaching interventions. Research design, approach and method: The study was conducted while one of the authors was involved in teaching doctoral students in consulting psychology and executive coaching, specifically in the USA. The approach involved a literature review of executive coaching models and a qualitative study using focus groups to develop and evaluate the competence executive coaching model. Main findings: The literature review provided scant evidence of competence executive coaching models and there seems to be a specific need for this in the training of coaches in South Africa. Hence the model that was developed is an attempt to provide trainers with a structured model for the training of coaches. Contribution/value-add: The uniqueness of this competence model is not only described in terms of the six distinct coaching intervention phases, but also the competencies required in each.

  2. Coaching Younger Practitioners and Students Using Components of the Co-Active Coaching Model

    OpenAIRE

    Tofade, Toyin

    2010-01-01

    Coaching is used to improve performance, achieve preset goals and obtain desired results. Several coaching models have been used in health professions for leadership and professional development. This article describes some components of Co-Active Coaching® that can be applied while coaching pharmacy students and younger practitioners. Co-Active Coaching requires the coach to use a broad range of communication skills, including listening, asking powerful questions, making insightful comments,...

  3. Coaching younger practitioners and students using components of the co-active coaching model.

    Science.gov (United States)

    Tofade, Toyin

    2010-04-12

    Coaching is used to improve performance, achieve preset goals and obtain desired results. Several coaching models have been used in health professions for leadership and professional development. This article describes some components of Co-Active Coaching(R) that can be applied while coaching pharmacy students and younger practitioners. Co-Active Coaching requires the coach to use a broad range of communication skills, including listening, asking powerful questions, making insightful comments, offering encouragement, and giving sincere praise. The characteristics of the ideal candidate for coaching and the value of coaching are also discussed.

  4. Problem-Based Learning, Scaffolding, and Coaching: Improving Student Outcomes through Structured Group Time

    Science.gov (United States)

    Murray, Lynn M.

    2012-01-01

    Live-client projects are increasingly used in marketing coursework. However, students, instructors, and clients are often disappointed by the results. This paper reports an approach drawn from the problem-based learning, scaffolding, and team formation and coaching literatures that uses favor of a series of workshops designed to guide students in…

  5. Lessons Learned Coaching Teachers in Behavior Management: The PBISplus Coaching Model

    OpenAIRE

    Hershfeldt, Patricia A.; Pell, Karen; Sechrest, Richard; Pas, Elise T.; Bradshaw, Catherine P.

    2012-01-01

    There is growing interest in coaching as a means of promoting professional development and the use of evidence-based practices in schools. This paper describes the PBISplus coaching model used to provide technical assistance for classroom- and school-wide behavior management to elementary schools over the course of three years. This tier-two coaching model was implemented within the context of school-wide Positive Behavioral Interventions and Supports (PBIS) and tested in a 42-school randomiz...

  6. Coaching

    DEFF Research Database (Denmark)

    Pedersen, Elsebet Frydendal

    kravet om ansvar for egen læring nye krav til lærerne på uddannelsesstederne, til pædagogikken og til læringsprocessen. Rapporten er en sammenskrivning af baggrundsviden om coaching og teorier, der relaterer sig til dette, især læringsprocesser. Derudover indgår nogle konkrete anvisninger til...... gennemførselen af selve coaching forløbet....

  7. Lessons Learned Coaching Teachers in Behavior Management: The PBIS"plus" Coaching Model

    Science.gov (United States)

    Hershfeldt, Patricia A.; Pell, Karen; Sechrest, Richard; Pas, Elise T.; Bradshaw, Catherine P.

    2012-01-01

    There is growing interest in coaching as a means of promoting professional development and the use of evidence-based practices in schools. This article describes the PBIS"plus" coaching model used to provide technical assistance for classroom- and school-wide behavior management to elementary schools over the course of 3 years. This Tier…

  8. Supporting universal prevention programs: a two-phased coaching model.

    Science.gov (United States)

    Becker, Kimberly D; Darney, Dana; Domitrovich, Celene; Keperling, Jennifer Pitchford; Ialongo, Nicholas S

    2013-06-01

    Schools are adopting evidence-based programs designed to enhance students' emotional and behavioral competencies at increasing rates (Hemmeter et al. in Early Child Res Q 26:96-109, 2011). At the same time, teachers express the need for increased support surrounding implementation of these evidence-based programs (Carter and Van Norman in Early Child Educ 38:279-288, 2010). Ongoing professional development in the form of coaching may enhance teacher skills and implementation (Noell et al. in School Psychol Rev 34:87-106, 2005; Stormont et al. 2012). There exists a need for a coaching model that can be applied to a variety of teacher skill levels and one that guides coach decision-making about how best to support teachers. This article provides a detailed account of a two-phased coaching model with empirical support developed and tested with coaches and teachers in urban schools (Becker et al. 2013). In the initial universal coaching phase, all teachers receive the same coaching elements regardless of their skill level. Then, in the tailored coaching phase, coaching varies according to the strengths and needs of each teacher. Specifically, more intensive coaching strategies are used only with teachers who need additional coaching supports, whereas other teachers receive just enough support to consolidate and maintain their strong implementation. Examples of how coaches used the two-phased coaching model when working with teachers who were implementing two universal prevention programs (i.e., the PATHS curriculum and PAX Good Behavior Game [PAX GBG]) provide illustrations of the application of this model. The potential reach of this coaching model extends to other school-based programs as well as other settings in which coaches partner with interventionists to implement evidence-based programs.

  9. Development of a career coaching model for medical students.

    Science.gov (United States)

    Hur, Yera

    2016-03-01

    Deciding on a future career path or choosing a career specialty is an important academic decision for medical students. The purpose of this study is to develop a career coaching model for medical students. This research was carried out in three steps. The first step was systematic review of previous studies. The second step was a need assessment of medical students. The third step was a career coaching model using the results acquired from the researched literature and the survey. The career coaching stages were defined as three big phases: The career coaching stages were defined as the "crystallization" period (Pre-medical year 1 and 2), "specification" period (medical year 1 and 2), and "implementation" period (medical year 3 and 4). The career coaching model for medical students can be used in programming career coaching contents and also in identifying the outcomes of career coaching programs at an institutional level.

  10. Coaching: a new model for academic and career achievement

    Directory of Open Access Journals (Sweden)

    Nicole M. Deiorio

    2016-12-01

    Full Text Available Background: Individualized education is emerging as an innovative model for physician training. This requires faculty coaching to guide learners’ achievements in academic performance, competency development, and career progression. In addition, coaching can foster self-reflection and self-monitoring using a data-guided approach to support lifelong learning. Context: Coaching differs from mentoring or advising, and its application in medical education is novel. Because of this, definitions of the concept and the constructs of coaching as applied to medical education are needed to accurately assess the coaching relationship and coaching processes. These can then be linked to learner outcomes to inform how coaching serves as a modifier of academic and competency achievement and career satisfaction. Innovation: We developed definitions and constructs for academic coaching in medical education based on review of existing education and non-education coaching literature. These constructs focus on 1 establishing relationship principles, 2 conducting learner assessments, 3 developing and implementing an action plan, and 4 assessing results and revising plans accordingly. Implication: Coaching is emerging as an important construct in the context of medical education. This article lays the vital groundwork needed for evaluation of coaching programs aimed at producing outstanding physicians.

  11. Coaching: a new model for academic and career achievement.

    Science.gov (United States)

    Deiorio, Nicole M; Carney, Patricia A; Kahl, Leslie E; Bonura, Erin M; Juve, Amy Miller

    2016-01-01

    Individualized education is emerging as an innovative model for physician training. This requires faculty coaching to guide learners' achievements in academic performance, competency development, and career progression. In addition, coaching can foster self-reflection and self-monitoring using a data-guided approach to support lifelong learning. Coaching differs from mentoring or advising, and its application in medical education is novel. Because of this, definitions of the concept and the constructs of coaching as applied to medical education are needed to accurately assess the coaching relationship and coaching processes. These can then be linked to learner outcomes to inform how coaching serves as a modifier of academic and competency achievement and career satisfaction. We developed definitions and constructs for academic coaching in medical education based on review of existing education and non-education coaching literature. These constructs focus on 1) establishing relationship principles, 2) conducting learner assessments, 3) developing and implementing an action plan, and 4) assessing results and revising plans accordingly. Coaching is emerging as an important construct in the context of medical education. This article lays the vital groundwork needed for evaluation of coaching programs aimed at producing outstanding physicians.

  12. From Practice to Praksis - models in Danish coaching psychology

    DEFF Research Database (Denmark)

    Spaten, Ole Michael; Kyndesen, Anna Imer; Palmer, Stephen

    2012-01-01

    The article gives a brief outline of the broadness of coaching models and moves on to describe in detail the model PRAKSIS, which has been developed from the English language PRACTICE model. This model is considered to be a key tool in solution-focused coaching and therapy. Thus, PRAKSIS...

  13. Coaching

    DEFF Research Database (Denmark)

    Amhøj, Christa Breum

    2008-01-01

    Coaching vinder mere og mere indpas i den danske folkeskole og udpeges som løsning på forskellige problemer. Eksempelvis som løsning på hvordan skolelederen kan sætte sig fri fra irrationelle og automatpilotiske reaktionsmønstre og lede sine medarbejdere til at lede sig selv; som løsning på hvordan...... for statiske og kontrollerende læringsstrukturer. Artiklen påstår, at det fælles for disse ledelsesmæssige problemer er, at coaching udpeges som en styringsteknologi, der kan bruges til at styre det mulighedsrum, der skabes, når den traditionelle skole bliver erstattet af mere komplekse tilblivelses- og...... disciplineringsformer og nye krav fra omverden. Der er en mængde forskellige styringsteknologier, der konkurrerer om at skabe og styre de indbyggere, der søger at befolke den tomme plads, der opstår, når den traditionelle skole trækkes tilbage. Artiklen påstår, at coaching er en styringsteknologi, der muliggør ledelse...

  14. The Gradual Increase of Responsibility Model: Coaching for Teacher Change

    Science.gov (United States)

    Collet, Vicki S.

    2012-01-01

    This study examines the gradual increase of responsibility (GIR) model for teacher coaching (Collet, 2008), an adaptation of Pearson and Gallagher's (1983) Gradual Release of Responsibility model. In GIR, instructional coaches model, make recommendations, ask probing questions, affirm teachers' appropriate decisions, and praise in order to provide…

  15. Personal Coaching: Reflection on a Model for Effective Learning

    Science.gov (United States)

    Griffiths, Kerryn

    2015-01-01

    The article "Personal Coaching: A Model for Effective Learning" (Griffiths, 2006) appeared in the "Journal of Learning Design" Volume 1, Issue 2 in 2006. Almost ten years on, Kerryn Griffiths reflects upon her original article. Specifically, Griffiths looks back at the combined coaching-learning model she suggested in her…

  16. Coaching Coaches

    DEFF Research Database (Denmark)

    Hedin, G.; Bendix, Lars Gotfred; Magnusson, B.

    2003-01-01

    We have developed a tandem of undergraduate courses for teaching XP and coaching of XP teams. This paper focuses on the coaching course and the coaching practices we have developed. The tandem of courses enables us to give a challenging and interesting course for the coaches, and, at the same time......, allows us to afford on-site coaches for the younger students, providing them with a high quality environment for learning XP. We also describe our experiences from the first instance of the courses and how we have tackled the boot-strapping problem....

  17. Aspire Project - an integrated wellness coaching model facilitated by an online coaching technology

    Directory of Open Access Journals (Sweden)

    Paul Thomas Pook

    2015-10-01

    PT Aspire provides personal trainers and coaches with a powerful facilitator of client goal achievement and behaviour change. It encourages an innovative approach to coaching that considers the key elements of wellness delivered via digital technology.

  18. A Formative Evaluation of the Children, Youth, and Families at Risk Coaching Model

    Science.gov (United States)

    Olson, Jonathan R.; Smith, Burgess; Hawkey, Kyle R.; Perkins, Daniel F.; Borden, Lynne M.

    2016-01-01

    In this article, we describe the results of a formative evaluation of a coaching model designed to support recipients of funding through the Children, Youth, and Families at Risk (CYFAR) initiative. Results indicate that CYFAR coaches draw from a variety of types of coaching and that CYFAR principle investigators (PIs) are generally satisfied with…

  19. Modeling Tissue Growth Within Nonwoven Scaffolds Pores

    Science.gov (United States)

    Church, Jeffrey S.; Alexander, David L.J.; Russell, Stephen J.; Ingham, Eileen; Ramshaw, John A.M.; Werkmeister, Jerome A.

    2011-01-01

    In this study we present a novel approach for predicting tissue growth within the pores of fibrous tissue engineering scaffolds. Thin nonwoven polyethylene terephthalate scaffolds were prepared to characterize tissue growth within scaffold pores, by mouse NR6 fibroblast cells. On the basis of measurements of tissue lengths at fiber crossovers and along fiber segments, mathematical models were determined during the proliferative phase of cell growth. Tissue growth at fiber crossovers decreased with increasing interfiber angle, with exponential relationships determined on day 6 and 10 of culture. Analysis of tissue growth along fiber segments determined two growth profiles, one with enhanced growth as a result of increased tissue lengths near the fiber crossover, achieved in the latter stage of culture. Derived mathematical models were used in the development of a software program to visualize predicted tissue growth within a pore. This study identifies key pore parameters that contribute toward tissue growth, and suggests models for predicting this growth, based on fibroblast cells. Such models may be used in aiding scaffold design, for optimum pore infiltration during the tissue engineering process. PMID:20687775

  20. The coaching network: A model for conducting and managing

    International Nuclear Information System (INIS)

    Rudd, J.G.; Smith, E.E.

    1991-01-01

    The Coaching Network is a mechanism for continually instructing and providing feedback to the learner during and after formal instruction. Six conditions necessary for the implementation of a Coaching Network are discussed. Use of the Coaching Network leads to improved performance, independent learning, improved skill/knowledge, and goal/objective setting

  1. Coaching psykologi

    DEFF Research Database (Denmark)

    Spaten, Ole Michael; Imer, Anna; Palmer, Stephen

    2014-01-01

    Praksis-modellen er inspireret og udviklet på baggrund af den engelsksprogede Practice model. Modellen anvendes især som et centralt redskab for problemløsning i coaching og terapi. Men praksis modellen kan anvendes bredere og som redskab til at hjælpe coachée mod at opnå mål i coaching og især...

  2. Human responses to augmented virtual scaffolding models.

    Science.gov (United States)

    Hsiao, Hongwei; Simeonov, Peter; Dotson, Brian; Ammons, Douglas; Kau, Tsui-Ying; Chiou, Sharon

    2005-08-15

    This study investigated the effect of adding real planks, in virtual scaffolding models of elevation, on human performance in a surround-screen virtual reality (SSVR) system. Twenty-four construction workers and 24 inexperienced controls performed walking tasks on real and virtual planks at three virtual heights (0, 6 m, 12 m) and two scaffolding-platform-width conditions (30, 60 cm). Gait patterns, walking instability measurements and cardiovascular reactivity were assessed. The results showed differences in human responses to real vs. virtual planks in walking patterns, instability score and heart-rate inter-beat intervals; it appeared that adding real planks in the SSVR virtual scaffolding model enhanced the quality of SSVR as a human - environment interface research tool. In addition, there were significant differences in performance between construction workers and the control group. The inexperienced participants were more unstable as compared to construction workers. Both groups increased their stride length with repetitions of the task, indicating a possibly confidence- or habit-related learning effect. The practical implications of this study are in the adoption of augmented virtual models of elevated construction environments for injury prevention research, and the development of programme for balance-control training to reduce the risk of falls at elevation before workers enter a construction job.

  3. Partnering Principal and Teacher Candidates: Exploring a Virtual Coaching Model in Teacher Education

    Science.gov (United States)

    Stapleton, Joy; Tschida, Christina; Cuthrell, Kristen

    2017-01-01

    Colleges of education are constantly searching for innovations to develop stronger graduates. This paper describes and shares findings from a study of a virtual coaching partnership model that links a principal candidate with a teacher candidate. Through the use of existing virtual coaching software, this model provides teacher candidates with…

  4. Group Coaching on Pre-School Teachers' Implementation of Pyramid Model Strategies: A Program Description

    Science.gov (United States)

    Fettig, Angel; Artman-Meeker, Kathleen

    2016-01-01

    The purpose of this article was to describe a group coaching model and present preliminary evidence of its impact on teachers' implementation of Pyramid Model practices. In particular, we described coaching strategies used to support teachers in reflecting and problem solving on the implementation of the evidence-based strategies. Preliminary…

  5. [Coaching: a reference model for the practice of nurse-leaders in the hospital context].

    Science.gov (United States)

    Cardoso, Maria Lúcia Alves Pereira; Ramos, Laís Helena; D'Innocenzo, Maria

    2011-06-01

    The objectives of the present study was to evaluate the leadership of nurses by using the coaching strategy as a managerial tool, and identify, measure and analyze the acquisition of competencies from the view of nurse-coaches. This is a descriptive, cross-sectional, exploratory and field study that was performed using a quantitative approach. Situational Leadership was selected as the theoretical framework and the research instrument was submitted to statistical and content analyses and was applied on 11 nurse leaders of a large scale private general hospital located in São Paulo. The results showed that participants gained new knowledge, confirmed the Situational Leadership model as the recognized being a coach leader, with a style that is mainly aimed at tasks and people, according to the situation involved, and pointed out the following skills as determinant of coaches: communication, giving and receiving feedback, assigning and gaining power and having an influence. Finally, the attitudes reflected the practice of coaching.

  6. Perceptions of Coach-Athlete Relationship are more Important to Coaches than Athletes in Predicting Dyadic Coping and Stress Appraisals: An Actor-Partner Independence Mediation Model

    Directory of Open Access Journals (Sweden)

    Adam Robert Nicholls

    2016-03-01

    Full Text Available Most attempts to manage stress involve at least one other person, yet coping studies in sport tend to report an athlete’s individual coping strategies. There is a limited understanding of coping involving other people, particularly within sport, despite athletes potentially spending a lot of time with other people, such as their coach. Guided by the systemic-transactional model of stress and coping among couples (Bodenmann, 1995, from relationship psychology, we assessed dyadic coping, perceptions of relationship quality, and primary stress appraisals of challenge and threat among 158 coach-athlete dyads (n = 277 participants. The athletes competed at amateur (n = 123, semi-professional (n = 31, or professional levels (n = 4. Coaches and athletes from the same dyad completed a measure of dyadic coping, coach-athlete relationship, and stress appraisals. We tested an Actor-Partner Interdependence Mediation Model to account for the nonindependence of dyadic data. These actor-partner analyses revealed differences between athletes and coaches. Although the actor effects were relatively large compared to partner effects, perceptions of relationship quality demonstrated little impact on athletes. The mediating role of relationship quality was broadly as important as dyadic coping for coaches. These findings provide an insight in to how coach-athlete dyads interact to manage stress and indicate that relationship quality is of particular importance for coaches, but less important for athletes. In order to improve perceptions of relationship quality among coaches and athletes, interventions could be developed to foster positive dyadic coping among both coaches and athletes, which may also impact upon stress appraisals of challenge and threat.

  7. Perceptions of Coach-Athlete Relationship Are More Important to Coaches than Athletes in Predicting Dyadic Coping and Stress Appraisals: An Actor-Partner Independence Mediation Model.

    Science.gov (United States)

    Nicholls, Adam R; Perry, John L

    2016-01-01

    Most attempts to manage stress involve at least one other person, yet coping studies in sport tend to report an athlete's individual coping strategies. There is a limited understanding of coping involving other people, particularly within sport, despite athletes potentially spending a lot of time with other people, such as their coach. Guided by the systemic-transactional model of stress and coping among couples (Bodenmann, 1995), from relationship psychology, we assessed dyadic coping, perceptions of relationship quality, and primary stress appraisals of challenge and threat among 158 coach-athlete dyads (n = 277 participants). The athletes competed at amateur (n = 123), semi-professional (n = 31), or professional levels (n = 4). Coaches and athletes from the same dyad completed a measure of dyadic coping, coach-athlete relationship, and stress appraisals. We tested an Actor-Partner Interdependence Mediation Model to account for the non-independence of dyadic data. These actor-partner analyses revealed differences between athletes and coaches. Although the actor effects were relatively large compared to partner effects, perceptions of relationship quality demonstrated little impact on athletes. The mediating role of relationship quality was broadly as important as dyadic coping for coaches. These findings provide an insight in to how coach-athlete dyads interact to manage stress and indicate that relationship quality is of particular importance for coaches, but less important for athletes. In order to improve perceptions of relationship quality among coaches and athletes, interventions could be developed to foster positive dyadic coping among both coaches and athletes, which may also impact upon stress appraisals of challenge and threat.

  8. Model of distant improvement of professional skill of the Ukrainian coaches

    Directory of Open Access Journals (Sweden)

    Petrova O.A.

    2012-03-01

    Full Text Available In article the conceptual model of organization and introduction of distant improvement of professional skill of coaches is developed and analyzed. Advantages of its introduction to coaches training, teachers and higher educational institutions which carry out a professional training for physical training and sports sphere are defined. It is developed the budgetary program project of distant improvement of professional skill of coaches on an example of National university of physical education and sports of Ukraine that consists of three stages: daily organizationally-adjusting session, independent telecommuting and daily final session with attestation.

  9. MANAGEMENT COACHING MODEL AND IMPACT OF ITS' ACTIVITIES ON EMPLOYEE SATISFACTION AND ON EFFECTIVENESS OF ENTERPRISE

    OpenAIRE

    Cajnko, Petra

    2015-01-01

    We have been dealing with a problem in the doctoral dissertation which has not been researched according to the available literature for us. We have not found data about the research in Slovenia if companies use coaching or not. We have not found data about the research of coaching activities and their influence on satisfaction of employees and successfulness of a company from the management point of view. Therefore, we have not been able to find the model of coaching and its activities’ infl...

  10. Instant Coaching.

    Science.gov (United States)

    Birch, Paul

    This book is intended to help managers coach individuals and groups; assess current performance; develop a coaching plan; keep track of whether their coaching is having the right effect; and learn how to motivate and communicate effectively. Chapters 1-3 establish what coaching is; who can coach; and who can be coached. Chapter 4 lays coaching out…

  11. Un modelo de "coaching" en directivos escolares Modelo de "coaching" na gestão escolar A Model for Coaching School Administrators

    Directory of Open Access Journals (Sweden)

    Alfredo Gorrochotegui-Martell

    2011-08-01

    Full Text Available Se describe cómo se realizó un "coaching" de liderazgo a 28 directivos escolares de cuatro escuelas municipales, durante un año, con todas las herramientas y procedimientos utilizados. Se utilizó una parte del modelo de competencias de liderazgo de Cardona y García-Lombardía (2009, el cual se adaptó para el ámbito escolar. El mismo sugiere un compendio de 19 competencias, con sus comportamientos característicos, así como un formato denominado "hoja de avance", que se utilizó para ir desarrollando las competencias en cada directivo. Las competencias más trabajadas individualmente fueron comunicación, gestión del tiempo y gestión de conflictos. La evaluación mostró que la experiencia ayudó a modificar conductas, lo cual permitió gestionar mejor el centro escolar.Descrição de um "coaching" de liderança emvinte e oito diretivos de quatro escolas-municipais durante um ano, bem como as ferramentase os procedimentos utilizados. Aplicou-se uma parte do modelo de competências de liderança de Cardona e Garcia-Lombardia(2009, adaptado para a escola. O modelo propõe 19 competições com os seus comportamentos característicos e um formato chamado Roteiro, usado para desenvolvimento de competências em cada diretivo. As competências mais reforçadas foram comunicação, gestão do tempo e gestão de conflitos. A avaliação mostrou que o ensaio ajudou a alterar comportamentos, permitindo uma melhor gestão da escola.The article offers a description of how 28 school administrators at four municipal schools were coached during a period of one year, and the tools and procedures employed to that end. A portion of the leadership skills model developed by Cardona and García-Lombardía (2009 was adapted to the school environment and applied. It suggests a set of 19 skills and their characteristic behavior, along with a form know as the "progress sheet," which was used to develop the skills of each administrator. Communication, time

  12. The Antecedents of Coaches' Interpersonal Behaviors: The Role of the Coaching Context, Coaches' Psychological Needs, and Coaches' Motivation.

    Science.gov (United States)

    Rocchi, Meredith; Pelletier, Luc G

    2017-10-01

    This study explored how the coaching context influences coaches' psychological needs, motivation, and reported interpersonal behaviors, using self-determination theory. In Study 1, 56 coaches identified how contextual factors influence their coaching experience. Coaches identified administration, athlete motivation, colleagues, parents, professional development, time, and work-life as having the largest impact on them. In Study 2, 424 coaches reported on their perceptions of the factors identified in Study 1 and their psychological needs, motivation, and interpersonal behaviors. Structural equation modeling analyses suggested perceptions of the coaching context supported or thwarted their psychological needs, which positively or negatively predicted their autonomous and controlled motivation. Coaches' autonomous motivation predicted their reported supportive interpersonal behaviors and controlled motivation predicted thwarting behaviors. Overall, the results provided additional support for understanding how the coaching context, coaches' psychological needs, and their motivation for coaching relate to their coaching behaviors.

  13. MODEL SCAFFOLDING PEMBELAJARAN MENULIS DENGAN PENDEKATAN PROSES BAGI ANAK TUNARUNGU

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    Yuliyati Endang Purbaningrum Endang Purbaningrum

    2016-10-01

    Full Text Available The aim for this researach is (1 to describe the needs analysis and challenges and (2 to produce the scaffolding draft model in learning writing using process ap-proach combined with the reflective maternal method (MMR. This research develop-ment applies R2D2 model which emphasizes users’ need based on the context (teacher-student with difable  and developed collaboratively. Based on the needs analysis in the field in the first year, scaffolding draft model was produced using approach elaborated with the reflective maternal method (MMR.

  14. The Use of Porous Scaffold as a Tumor Model

    Directory of Open Access Journals (Sweden)

    Mei Zhang

    2013-01-01

    Full Text Available Background. Human cancer is a three-dimensional (3D structure consisting of neighboring cells, extracellular matrix, and blood vessels. It is therefore critical to mimic the cancer cells and their surrounding environment during in vitro study. Our aim was to establish a 3D cancer model using a synthetic composite scaffold. Methods. High-density low-volume seeding was used to promote attachment of a non-small-cell lung cancer cell line (NCI-H460 to scaffolds. Growth patterns in 3D culture were compared with those of monolayers. Immunohistochemistry was conducted to compare the expression of Ki67, CD44, and carbonic anhydrase IX. Results. NCI-H460 readily attached to the scaffold without surface pretreatment at a rate of 35% from a load of 1.5 × 106 cells. Most cells grew vertically to form clumps along the surface of the scaffold, and cell morphology resembled tissue origin; 2D cultures exhibited characteristics of adherent epithelial cancer cell lines. Expression patterns of Ki67, CD44, and CA IX varied markedly between 3D and monolayer cultures. Conclusions. The behavior of cancer cells in our 3D model is similar to tumor growth in vivo. This model will provide the basis for future study using 3D cancer culture.

  15. Kollegial Coaching

    DEFF Research Database (Denmark)

    Lystbæk, Christian Tang

    Bidraget sammenfatter pointerne fra min ph.d.-afhandling: Kollegial Coaching - Filosoferende fællesskaber i professionspraksis. Bidraget fokuserer på: 1. Kontekstualisering af coaching i feltet for praksislæring 2. Konfigurering af coaching som ramme for filosoferende fællesskaber 3....... Konceptualisering af coaching som modus for evidensreflekteret praksis...

  16. "The Good, the Bad and the Ugly": A Model for Reflective Teaching Practices in Coaching Pedagogy

    Science.gov (United States)

    Gordon, Evelyn J.

    2017-01-01

    Coaching should go beyond drills and preparing for the big game. One question many coaches have asked themselves is, "How do I get better?" One way to ensure that future coaches (current students) in sport coaching education are thinking of ways to improve for the future is to teach them to think about the past. This is where reflection…

  17. Using shared online blogs to structure and support informal coach learning Part 1: A tool to scaffold reflection and communities of practice?

    OpenAIRE

    Stoszkowski, J.,; Collins, D.

    2017-01-01

    Coaches’ apparent preferences for informal and self-directed modes of learning have been highlighted in the literature. Consequently, there is a need for innovative coach education approaches that complement these clearly preferred, informal routes, and better provide coaches with the professional skills they need to deal with the complex nature of their work. Online blogs are one such tool said to have the potential to strengthen and promote critical thinking and reflection on professional p...

  18. Narrative coaching

    DEFF Research Database (Denmark)

    Stelter, Reinhard

    2010-01-01

    The intention with this chapter is to present a new understanding of coaching defined as the coach's participation in and facilitation of the developmental and learning process of coachees, (i.e., individuals or groups being coached). New social trends and societal changes are put forward...... as the central reason for introducing a new perspective on coaching - an approach significantly different from traditional sports coaching. A theoretical framework of this coaching approach is presented by balancing between an individual, experiential, embodied perspective on the one hand and a social, cultural......, community-oriented perspective on the other. Meaning-making is highlighted as the central concept in this approach and as the pivotal point for the coaching dialogue. Concrete suggestions of how to focus on experiential and social dimensions are given as ideas for the concrete coaching intervention. A case...

  19. Managerial Coaching

    Science.gov (United States)

    Bommelje, Rick

    2015-01-01

    This chapter explores how coaching equips managers and supervisors to be successful in the 21st-century workplace. Coaching has benefited these professionals by providing them with viable tools to enhance the leadership and managerial tools they already possess.

  20. Faculty Development through Cognitive Coaching

    Science.gov (United States)

    Bair, Mary Antony

    2017-01-01

    This paper describes a faculty development project in which 12 teacher educators used the Cognitive Coaching model to engage in critical reflections about their teaching. Each identified an aspect of their teaching they wanted to improve and a colleague to serve as coach. Participants engaged in Cognitive Coaching cycles, consisting of planning…

  1. A comparison of scaffold-free and scaffold-based reconstructed human skin models as alternatives to animal use.

    Science.gov (United States)

    Kinikoglu, Beste

    2017-12-01

    Tissue engineered full-thickness human skin substitutes have various applications in the clinic and in the laboratory, such as in the treatment of burns or deep skin defects, and as reconstructed human skin models in the safety testing of drugs and cosmetics and in the fundamental study of skin biology and pathology. So far, different approaches have been proposed for the generation of reconstructed skin, each with its own advantages and disadvantages. Here, the classic tissue engineering approach, based on cell-seeded polymeric scaffolds, is compared with the less-studied cell self-assembly approach, where the cells are coaxed to synthesise their own extracellular matrix (ECM). The resulting full-thickness human skin substitutes were analysed by means of histological and immunohistochemical analyses. It was found that both the scaffold-free and the scaffold-based skin equivalents successfully mimicked the functionality and morphology of native skin, with complete epidermal differentiation (as determined by the expression of filaggrin), the presence of a continuous basement membrane expressing collagen VII, and new ECM deposition by dermal fibroblasts. On the other hand, the scaffold-free model had a thicker epidermis and a significantly higher number of Ki67-positive proliferative cells, indicating a higher capacity for self-renewal, as compared to the scaffold-based model. 2017 FRAME.

  2. Using mathematical modeling to control topographical properties of poly (ε-caprolactone) melt electrospun scaffolds

    International Nuclear Information System (INIS)

    Ko, J; Bhullar, S K; Mohtaram, N K; Willerth, S M; Jun, M B G

    2014-01-01

    Melt electrospinning creates fibrous scaffolds using direct deposition. The main challenge of melt electrospinning is controlling the topography of the scaffolds for tissue engineering applications. Mathematical modeling enables a better understanding of the parameters that determine the topography of scaffolds. The objective of this study is to build two types of mathematical models. First, we modeled the melt electrospinning process by incorporating parameters such as nozzle size, counter electrode distance and applied voltage that influence fiber diameter and scaffold porosity. Our second model describes the accumulation of the extruded microfibers on flat and round surfaces using data from the microfiber modeling. These models were validated through the use of experimentally obtained data. Scanning electron microscopy (SEM) was used to image the scaffolds and the fiber diameters were measured using Quartz-PCI Image Management Systems® in SEM to measure scaffold porosity. (paper)

  3. PENINGKATAN KEMAMPUAN PEMECAHAN MASALAH DAN PENGEMBANGAN KARAKTER PADA SISWA KELAS VII MELALUI MODEL PBL BERBANTUAN SCAFFOLDING

    OpenAIRE

    Novy Kris Zaini; Wuryanto Wuryanto; Hery Sutarto

    2016-01-01

    Tujuan penelitian ini adalah untuk mengetahui (1) apakah kemampuan pemecahan masalah matematika peserta didik yang diajar dengan model PBL berbantuan scaffolding pada materi pokok segiempat kelas VII dapat mencapai KKM yang ditetapkan, (2) apakah pembelajaran matematika dengan model PBL berbantuan scaffolding pada materi pokok segiempat kelas VII dapat meningkatkan kemampuan pemecahan masalah peserta didik pilihan, (3) apakah pembelajaran matematika dengan model PBL berbantuan scaffolding pad...

  4. The Financial Coaching Advice Model: An Exploration into how it Satisfies Expectations of Quality Advice

    Directory of Open Access Journals (Sweden)

    Julie Knutsen

    2012-11-01

    Full Text Available For 20 years, the financial planning sector in Australia has been transitioning from a sales-orientated force to aprofession of qualified and skilled practitioners. Today, the potential for professional financial planning adviceto benefit Australians financially, economically and psychologically is recognised by government. Financially,these benefits include increased savings, less interest expense through faster debt reduction, higher investmentreturns and appropriate levels of insurance. Economically, a more financially literate society has the potentialfor less reliance on an already burdened social security system. Psychologically, the benefits include the peaceof mind that comes from an individual being confident in financial matters. However, despite this level ofrecognition and development, national surveys have reported that only a small percentage of the populationactually seek professional financial advice. The factors attributing to these low percentages included the gapsin financial literacy limiting an individual’s engagement in financial matters and consumer’s current mistrust ofthe financial advice business models that remain dominated by commission-driven product sales. Thesedeficiencies have led some financial planning firms to break from financial product sales as the primary advicemodel and focus on financial coaching. Exploratory interviews with the practitioners and clients of a selectedfinancial planning firm have generated insightful discussion into how a financial coaching advice model isachieving the financial, economic and psychological benefits recognised by government as the potentialoutcomes of professional financial advice. The aim of this paper is to present the findings from that discussionand demonstrate the opportunities embedded within a financial coaching advice model. It is argued that thisdiscussion offers a foundation for future research direction in an area currently under researched in

  5. Calibrating Charisma: The many-facet Rasch model for leader measurement and automated coaching

    Science.gov (United States)

    Barney, Matt

    2016-11-01

    No one is a leader unless others follow. Consequently, leadership is fundamentally a social judgment construct, and may be best measured via a Many Facet Rasch Model designed for this purpose. Uniquely, the MFRM allows for objective, accurate and precise estimation of leader attributes, along with identification of rater biases and other distortions of the available information. This presentation will outline a mobile computer-adaptive measurement system that measures and develops charisma, among others. Uniquely, the approach calibrates and mass-personalizes artificially intelligent, Rasch-calibrated electronic coaching that is neither too hard nor too easy but “just right” to help each unique leader develop improved charisma.

  6. Student-Centered Coaching: The Moves

    Science.gov (United States)

    Sweeney, Diane; Harris, Leanna S.

    2017-01-01

    Student-centered coaching is a highly-effective, evidence-based coaching model that shifts the focus from "fixing" teachers to collaborating with them to design instruction that targets student outcomes. But what does this look like in practice? "Student-Centered Coaching: The Moves" shows you the day-to-day coaching moves that…

  7. Background Review of Existing Literature on Coaching

    OpenAIRE

    Nikki Aikens; Lauren Akers

    2011-01-01

    In this report, we identify studies that link coaching and specific coaching models with outcomes for classrooms, providers, and children, while also highlighting critical aspects of coaching. Specifically, we summarize the research base for coaching as a professional development tool, including the strengths and weaknesses of this research.

  8. Implementation of a Coaching Program for School Principals: Evaluating Coaches' Strategies and the Results

    Science.gov (United States)

    Huff, Jason; Preston, Courtney; Goldring, Ellen

    2013-01-01

    We present a multi-phase coaching model that was implemented to help principals improve their instructional leadership practices. We then discuss a rubric based on this coaching model that we used to evaluate coaches' implementation of key model phases and to identify principals' responses to the coaching. After presenting the…

  9. Fluorescence imaging preparation methods for tissue scaffolds implanted into a green fluorescent protein porcine model.

    Science.gov (United States)

    Smith, Sarah E; White, Richard A; Grant, David A; Grant, Sheila A

    2015-10-01

    Green fluorescent protein (GFP) animal models have become increasingly popular due to their potential to enhance in vivo imaging and their application to many fields of study. We have developed a technique to observe host tissue integration into scaffolds using GFP expressing swine and fluorescence imaging. Current fluorescence imaging preparation methods cannot be translated to a full GFP animal model due to several challenges and limitations that are investigated here. We have implanted tissue scaffolds into GFP expressing swine and have prepared explanted scaffolds for fluorescence imaging using four different methods including formalin fixation and paraffin embedding, vapor fixation, freshly prepared paraformaldehyde fixation, and fresh frozen tissue. Explanted scaffolds and tissue were imaged using confocal microscopy with spectral separation to evaluate the GFP animal model for visualization of host tissue integration into explanted scaffolds. All methods except fresh frozen tissue induced autofluorescence of the scaffold, preventing visualization of detail between host tissue and scaffold fibers. Fresh frozen tissue preparation allowed for the most reliable visualization of fluorescent host tissue integration into non-fluorescent scaffolds. It was concluded that fresh frozen tissue preparation is the best method for fluorescence imaging preparation when using scaffolds implanted into GFP whole animal models.

  10. Rapid-prototyped PLGA/β-TCP/hydroxyapatite nanocomposite scaffolds in a rabbit femoral defect model

    International Nuclear Information System (INIS)

    Kim, Jinku; McBride, Sean; Alvarez-Urena, Pedro; Song, Young-Hye; Hollinger, Jeffrey O; Tellis, Brandi; Dean, David D; Sylvia, Victor L; Elgendy, Hoda; Ong, Joo

    2012-01-01

    Bone tissue engineering scaffolds composed of poly(d,l-lactide:glycolide) (DL-PLGA) and β-tricalcium phosphate (β-TCP) nanocomposites were prepared and characterized. Scaffolds with two specific architectures were produced via fused deposition modeling (FDM), a type of extrusion freeform fabrication. Microfilaments deposited at angles of 0° and 90° were designated as the ‘simple’ scaffold architecture, while those deposited at angles alternating between 0°, 90°, 45° and −45° were designated as the ‘complex’ scaffold architecture. In addition, the simple and complex scaffolds were coated with hydroxyapatite (HA). The surface morphology of the scaffolds was assessed before and after HA coating and uniform distribution of HA coating on the surface was observed by scanning electron microscopy. The scaffolds were implanted into rabbit femoral unicortical bone defects according to four treatment groups based on pore structure and HA coating. After 6 and 12 weeks, scaffolds and host bone were recovered and processed for histology. Data suggest that all configurations of the scaffolds integrated with the host bone and were biocompatible and thus may offer an exciting new scaffold platform for delivery of biologicals for bone regeneration. (paper)

  11. A formative evaluation of a coach-based technical assistance model for youth- and family-focused programming.

    Science.gov (United States)

    Olson, Jonathan R; McCarthy, Kimberly J; Perkins, Daniel F; Borden, Lynne M

    2018-04-01

    The Children, Youth, and Families At-Risk (CYFAR) initiative provides funding and technical support for local community-based programs designed to promote positive outcomes among vulnerable populations. In 2013, CYFAR implemented significant changes in the way it provides technical assistance (TA) to grantees. These changes included introducing a new TA model in which trained coaches provide proactive support that is tailored to individual CYFAR projects. The purpose of this paper is to describe the evolution of this TA model and present preliminary findings from a formative evaluation. CYFAR Principal Investigators (PIs) were invited to respond to online surveys in 2015 and 2016. The surveys were designed to assess PI attitudes towards the nature and quality of support that they receive from their coaches. CYFAR PIs reported that their coaches have incorporated a range of coaching skills and techniques into their work. PIs have generally positive attitudes towards their coaches, and these attitudes have become more positive over time. Results suggest that CYFAR PIs have been generally supportive of the new TA system. Factors that may have facilitated support include a strong emphasis on team-building and the provision of specific resources that support program design, implementation, and evaluation. Copyright © 2017 Elsevier Ltd. All rights reserved.

  12. Coaching Early Educators to Implement Effective Practices: Using the Pyramid Model to Promote Social-Emotional Development

    Science.gov (United States)

    Fox, Lise; Hemmeter, Mary Louise

    2011-01-01

    The Pyramid Model is a conceptual framework for organizing practices for promoting young children's social-emotional development and preventing and addressing challenging behavior. The authors describe a coaching approach that is focused on supporting early educators' implementation of the Pyramid Model. The authors provide a description of the…

  13. Coach and Coaching in Education

    OpenAIRE

    Işıklar Pürçek, Kadriye

    2014-01-01

    Coaching, especially in the United States in the world measured by million dollar industry has become. The aim of coaching in organizations, providing increased performance and potential targeting personalized emergence process of growing. Nowadays, in various fields (psychological support, training, personal development, work life, art, sports, etc.) Is often used, is still trying to establish the scientific infrastructure, is a concept somewhat worn.Coaching is used in a wide area in the wo...

  14. Application of a Bayesian algorithm for the Statistical Energy model updating of a railway coach

    DEFF Research Database (Denmark)

    Sadri, Mehran; Brunskog, Jonas; Younesian, Davood

    2016-01-01

    The classical statistical energy analysis (SEA) theory is a common approach for vibroacoustic analysis of coupled complex structures, being efficient to predict high-frequency noise and vibration of engineering systems. There are however some limitations in applying the conventional SEA. The pres......The classical statistical energy analysis (SEA) theory is a common approach for vibroacoustic analysis of coupled complex structures, being efficient to predict high-frequency noise and vibration of engineering systems. There are however some limitations in applying the conventional SEA...... the performance of the proposed strategy, the SEA model updating of a railway passenger coach is carried out. First, a sensitivity analysis is carried out to select the most sensitive parameters of the SEA model. For the selected parameters of the model, prior probability density functions are then taken...

  15. Promoting Student-Teacher Interactions: Exploring a Peer Coaching Model for Teachers in a Preschool Setting.

    Science.gov (United States)

    Johnson, Stacy R; Finlon, Kristy J; Kobak, Roger; Izard, Carroll E

    2017-07-01

    Peer coaching provides an attractive alternative to traditional professional development for promoting classroom quality in a sustainable, cost-effective manner by creating a collaborative teaching community. This exploratory study describes the development and evaluation of the Colleague Observation And CoacHing (COACH) program, a peer coaching program designed to increase teachers' effectiveness in enhancing classroom quality in a preschool Head Start setting. The COACH program consists of a training workshop on coaching skills and student-teacher interactions, six peer coaching sessions, and three center meetings. Pre-post observations of emotional support, classroom organization, and instructional support using the Classroom Assessment Scoring System of twelve classrooms assigned to peer coaching were compared to twelve control classrooms at baseline and following the intervention. Findings provide preliminary support that the peer coaching program is perceived as acceptable and feasible by the participating preschool teachers and that it may strengthen student-teacher interactions. Further program refinement and evaluation with larger samples is needed to enhance student-teacher interactions and, ultimately, children's adaptive development.

  16. DEVELOPING MODIFIED SCAFFOLDING MODEL TO ELICIT LEARNERS‟S SPEECH PRODUCTION

    Directory of Open Access Journals (Sweden)

    Inti Englishtina

    2017-04-01

    children‘s English speech production. It is aimed at describing what the teachers need in eliciting their students‘ speech production; how a scaffolding model should be developed to elicit the children‘s speech production; and how effective is the scaffolding model in eliciting the children‘s speech production. The objects of the study are teachers and students of kindergarten at Mondial SchoolSemarang, Indonesia. Preliminary research was conducted to describe what the teachers need to elicit their students‘ speech production. Referring to the need analysis, a scaffolding model was developed to elicit the children‘s speech production. To explain the effectiveness of the model a try out was carried out on the model developed. Based on the result of the try out, a final model was developed. The findings of the preliminary research suggest that Mondial School kindergarten teachers need a scaffolding model to elicit their students‘ speech production. Referring to the findings a scaffolding model based on speech functions proposed by Celce-Murcia at. al (1997 was developed. To explain the effectiveness of the model the developed initial model was tried out. Based on the result of the try out the final scaffolding model was developed. This study concludes that kindergarten teachers of Mondial School need a scaffolding model to elicit their children‘s English speech production. Based on the need analysis a ModifiedScaffolding Model was developed. Referring to the result of the try out steps it is reasonable to argue that this product of Scaffolding Model is effective in eliciting English speech production of kindergarten students of Mondial School. As teachers use to helping learners to bridge a cognitive

  17. Artificial crawler model for texture analysis on silk fibroin scaffolds

    International Nuclear Information System (INIS)

    Machado, Bruno Brandoli; Gonçalves, Wesley Nunes; Bruno, Odemir Martinez

    2014-01-01

    Texture plays an important role in computer vision tasks. Several methods of texture analysis are available. However, these methods are not capable of extracting rich detail in images. This paper presents a novel approach to image texture classification based on the artificial crawler model. Here, we propose a new rule of movement that moves artificial crawler agents not only toward higher intensities but also toward lower ones. This strategy is able of capturing more detail because the agents explore the peaks as well as the valleys. Thus, compared with the state-of-the-art method, this approach shows an increased discriminatory power. Experiments on the most well known benchmark demonstrate the superior performance of our approach. We also tested our approach on silk fibroin scaffold analysis, and results indicate that our method is consistent and can be applied in real-world situations. (paper)

  18. Interfacing polymeric scaffolds with primary pancreatic ductal adenocarcinoma cells to develop 3D cancer models

    NARCIS (Netherlands)

    Ricci, C.; Mota, C.M.; Moscato, S.; D' Alessandro, D.; Ugel, S.; Sartoris, S.; Bronte, V.; Boggi, U.; Campani, D.; Funel, N.; Moroni, Lorenzo; Danti, S.

    2014-01-01

    We analyzed the interactions between human primary cells from pancreatic ductal adenocarcinoma (PDAC) and polymeric scaffolds to develop 3D cancer models useful for mimicking the biology of this tumor. Three scaffold types based on two biocompatible polymeric formulations, such as poly(vinyl

  19. Hemodynamic analysis of a novel bioresorbable scaffold in porcine coronary artery model

    NARCIS (Netherlands)

    Tenekecioglu, Erhan; Torii, Ryo; Bourantas, Christos V.; Cavalcante, Rafael; Sotomi, Yohei; Zeng, Yaping; Collet, Carlos; Crake, Tom; Abizaid, Alexandre; Onuma, Yoshinobu; Su, Solomon; Santoso, Teguh; Serruys, Patrick W.

    2017-01-01

    The shear stress distribution assessment can provide useful insights for the hemodynamic performance of the implanted stent/scaffold. Our aim was to investigate the effect of a novel bioresorbable scaffold, Mirage on local hemodynamics in animal models. The main epicardial coronary arteries of 7

  20. Motivation Coaching Training for Instructional Coaches: A Pilot Study of Motivational Interviewing Skills Training

    Science.gov (United States)

    Lyons, Michael D.; Jones, Sara J.; Smith, Bradley H.; McQuillin, Samuel D.; Richardson, Georgette; Reid, Erin; McClellan, Anne

    2017-01-01

    In our paper we describe a newly developed teacher coaching model that provides training on motivational interviewing (MI) to improve instructional coaches' effectiveness with classroom teachers. Participants were 38 coaches who completed a three-day coaching training. At pre- and post-test, the participants completed role plays with an actor who…

  1. [Digital modeling for the individual mandibular 3D mesh scaffold based on 3D printing technology].

    Science.gov (United States)

    Yan, Rongzeng; Luo, Danmei; Qin, Xiaoyu; Li, Runxin; Rong, Qiguo; Hu, Min

    2016-05-01

    To investigate an ideal modeling method of designing 3D mesh scaffold substitutes based on tissue engineering to restore mandibular bone defects. By analyzing the theoretical model from titanium scaffolds fabricated by 3D printing, the feasibility and effectiveness of the proposed methodology were verified. Based on the CT scanned data of a subject, the Mimics 15.0 and Geomagic studio 12.0 reverse engineering software were adopted to generate surface model of mandibular bone and the defect area was separated from the 3D model of bone. Then prosthesis was designed via mirror algorithm, in which outer shape was used as the external shape of scaffold. Unigraphics software NX 8.5 was applied on Boolean calculation of subtraction between prosthesis and regular microstructure structure and ANSYS 14.0 software was used to design the inner construction of 3D mesh scaffolds. The topological structure and the geometrical parameters of 3D mesh titanium scaffolds were adjusted according to the aim of optimized structure and maximal strength with minimal weight. The 3D mesh scaffolds solid model through two kinds of computer-aided methods was input into 3D printing equipment to fabricate titanium scaffolds. Individual scaffolds were designed successfully by two modeling methods. The finite element optimization made 10% decrease of the stress peak and volume decrease of 43%, and the porosity increased to 76.32%. This modeling method was validated by 3D printing titanium scaffold to be feasible and effective. 3D printing technology combined with finite element topology optimization to obtain the ideal mandibular 3D mesh scaffold is feasible and effective.

  2. Applying Social Cognitive Theory in Coaching Athletes: The Power of Positive Role Models

    Science.gov (United States)

    Connolly, Graeme J.

    2017-01-01

    The purpose of this article is to help coaches apply specific principles of psychology to the coaching process. More specifically, the work of Albert Bandura and his social cognitive theory form the basis for the article. This article begins with a brief overview of Bandura's social cognitive theory. It then examines four types of behaviors worthy…

  3. Narrative coaching

    DEFF Research Database (Denmark)

    Drake, David; Stelter, Reinhard

    2014-01-01

    From the introduction: While a narrative frame is relatively new in the fi elds of psychotherapy and coaching, stories have been an essential constituent of cultures and communities since the dawn of time and are fundamental to the way we make sense and meaning. We use stories to structure our...... keep individually and collectively telling ourselves that reinforce them. As such, they are at the core of what it means to be human – as refl ected in our biology, ontology, epistemology and cosmology – and a natural medium for use in coaching. Narrative coaches are, therefore, keenly interested...

  4. Modeling the impact of scaffold architecture and mechanical loading on collagen turnover in engineered cardiovascular tissues.

    Science.gov (United States)

    Argento, G; de Jonge, N; Söntjens, S H M; Oomens, C W J; Bouten, C V C; Baaijens, F P T

    2015-06-01

    The anisotropic collagen architecture of an engineered cardiovascular tissue has a major impact on its in vivo mechanical performance. This evolving collagen architecture is determined by initial scaffold microstructure and mechanical loading. Here, we developed and validated a theoretical and computational microscale model to quantitatively understand the interplay between scaffold architecture and mechanical loading on collagen synthesis and degradation. Using input from experimental studies, we hypothesize that both the microstructure of the scaffold and the loading conditions influence collagen turnover. The evaluation of the mechanical and topological properties of in vitro engineered constructs reveals that the formation of extracellular matrix layers on top of the scaffold surface influences the mechanical anisotropy on the construct. Results show that the microscale model can successfully capture the collagen arrangement between the fibers of an electrospun scaffold under static and cyclic loading conditions. Contact guidance by the scaffold, and not applied load, dominates the collagen architecture. Therefore, when the collagen grows inside the pores of the scaffold, pronounced scaffold anisotropy guarantees the development of a construct that mimics the mechanical anisotropy of the native cardiovascular tissue.

  5. Injected Biodegradable Polyurethane Scaffolds Support Tissue Infiltration and Delay Wound Contraction in a Porcine Excisional Model

    Science.gov (United States)

    Adolph, Elizabeth J.; Guo, Ruijing; Pollins, Alonda C.; Zienkiewicz, Katarzyna; Cardwell, Nancy; Davidson, Jeffrey M.; Guelcher, Scott A.; Nanney, Lillian B.

    2016-01-01

    The filling of wound cavities with new tissue is a challenge. We previously reported on the physical properties and wound healing kinetics of prefabricated, gas-blown polyurethane (PUR) scaffolds in rat and porcine excisional wounds. To address the capability of this material to fill complex wound cavities, this study examined the in vitro and in vivo reparative characteristics of injected PUR scaffolds employing a sucrose porogen. Using the porcine excisional wound model, we compared reparative outcomes to both preformed and injected scaffolds as well as untreated wounds at 9, 13, and 30 days after scaffold placement. Both injected and preformed scaffolds delayed wound contraction by 19% at 9 days and 12% at 13 days compared to non-treated wounds. This stenting effect proved transient since both formulations degraded by day 30. Both types of scaffolds significantly inhibited the undesirable alignment of collagen and fibroblasts through day 13. Injected scaffolds were highly compatible with sentinel cellular events of normal wound repair cell proliferation, apoptosis, and blood vessel density. The present study provides further evidence that either injected or preformed PUR scaffolds facilitate wound healing, support tissue infiltration and matrix production, delay wound contraction, and reduce scarring in a clinically relevant animal model, which underscores their potential utility as a void-filling platform for large cutaneous defects. PMID:26343927

  6. Accurate Fabrication of Hydroxyapatite Bone Models with Porous Scaffold Structures by Using Stereolithography

    Energy Technology Data Exchange (ETDEWEB)

    Maeda, Chiaki; Tasaki, Satoko; Kirihara, Soshu, E-mail: c-maeda@jwri.osaka-u.ac.jp [Joining and Welding Research Institute, Osaka University, 11-1 Mihogaoka, Ibaraki City, Osaka 567-0047 (Japan)

    2011-05-15

    Computer graphic models of bioscaffolds with four-coordinate lattice structures of solid rods in artificial bones were designed by using a computer aided design. The scaffold models composed of acryl resin with hydroxyapatite particles at 45vol. % were fabricated by using stereolithography of a computer aided manufacturing. After dewaxing and sintering heat treatment processes, the ceramics scaffold models with four-coordinate lattices and fine hydroxyapatite microstructures were obtained successfully. By using a computer aided analysis, it was found that bio-fluids could flow extensively inside the sintered scaffolds. This result shows that the lattice structures will realize appropriate bio-fluid circulations and promote regenerations of new bones.

  7. Accurate Fabrication of Hydroxyapatite Bone Models with Porous Scaffold Structures by Using Stereolithography

    International Nuclear Information System (INIS)

    Maeda, Chiaki; Tasaki, Satoko; Kirihara, Soshu

    2011-01-01

    Computer graphic models of bioscaffolds with four-coordinate lattice structures of solid rods in artificial bones were designed by using a computer aided design. The scaffold models composed of acryl resin with hydroxyapatite particles at 45vol. % were fabricated by using stereolithography of a computer aided manufacturing. After dewaxing and sintering heat treatment processes, the ceramics scaffold models with four-coordinate lattices and fine hydroxyapatite microstructures were obtained successfully. By using a computer aided analysis, it was found that bio-fluids could flow extensively inside the sintered scaffolds. This result shows that the lattice structures will realize appropriate bio-fluid circulations and promote regenerations of new bones.

  8. Tredje generations coaching

    DEFF Research Database (Denmark)

    Stelter, Reinhard

    , vi dagligt skal forholde os til. Forfatterens forestilling om coaching tager udgangspunkt i en analyse af vort samfund – et samfund, der er kendetegnet af diversificering, identitetsudfordringer, ophævelse af vidensmonopolet, livslang uddannelse, nødvendighed til selvrefleksion mm. Bogen skal har...... dermed et særligt profil. Den skal markere (og skubbe til) en ny trend i coaching, som afgrænser sig fra pop coaching og GROW model o.l.. Coaching kan aldrig være ”the quick fix”. Vores tid tillader det bage ikke. Disse samfundsmæssige forandringer er grundlaget for coachingens eksistens og udbredelse......, men de skal også være fundament for den måde vi bedriver coaching. Derfor plæderer bogens forfatter for en 3. generations coaching i en form, hvor coachen og fokuspersonen mindre er fokuseret på løsninger, men i højere grad optaget af at skabe et rum til (selv)refleksion gennem en samskabende praksis....

  9. The Unexamined Student Is Not Worth Teaching: Preparation, the Zone of Proximal Development, and the Socratic Model of Scaffolded Learning

    Science.gov (United States)

    Colter, Robert; Ulatowski, Joseph

    2017-01-01

    "Scaffolded learning" describes a cluster of instructional techniques designed to move students from a novice position toward greater understanding, such that they become independent learners. Our Socratic Model of Scaffolded Learning ("SMSL") includes two phases not normally included in discussions of scaffolded learning, the…

  10. A structural model for the flexural mechanics of nonwoven tissue engineering scaffolds.

    Science.gov (United States)

    Engelmayr, George C; Sacks, Michael S

    2006-08-01

    The development of methods to predict the strength and stiffness of biomaterials used in tissue engineering is critical for load-bearing applications in which the essential functional requirements are primarily mechanical. We previously quantified changes in the effective stiffness (E) of needled nonwoven polyglycolic acid (PGA) and poly-L-lactic acid (PLLA) scaffolds due to tissue formation and scaffold degradation under three-point bending. Toward predicting these changes, we present a structural model for E of a needled nonwoven scaffold in flexure. The model accounted for the number and orientation of fibers within a representative volume element of the scaffold demarcated by the needling process. The spring-like effective stiffness of the curved fibers was calculated using the sinusoidal fiber shapes. Structural and mechanical properties of PGA and PLLA fibers and PGA, PLLA, and 50:50 PGA/PLLA scaffolds were measured and compared with model predictions. To verify the general predictive capability, the predicted dependence of E on fiber diameter was compared with experimental measurements. Needled nonwoven scaffolds were found to exhibit distinct preferred (PD) and cross-preferred (XD) fiber directions, with an E ratio (PD/XD) of approximately 3:1. The good agreement between the predicted and experimental dependence of E on fiber diameter (R2 = 0.987) suggests that the structural model can be used to design scaffolds with E values more similar to native soft tissues. A comparison with previous results for cell-seeded scaffolds (Engelmayr, G. C., Jr., et al., 2005, Biomaterials, 26(2), pp. 175-187) suggests, for the first time, that the primary mechanical effect of collagen deposition is an increase in the number of fiber-fiber bond points yielding effectively stiffer scaffold fibers. This finding indicated that the effects of tissue deposition on needled nonwoven scaffold mechanics do not follow a rule-of-mixtures behavior. These important results underscore

  11. Managerial coaching: a concept analysis.

    Science.gov (United States)

    Batson, Vicki D; Yoder, Linda H

    2012-07-01

    This article presents a report of a concept analysis of managerial coaching. Managerial coaching has been identified as a means for managers to give support to staff nurses, however, no clear delineation of what behaviours and attributes constitute managerial coaching or differentiate it from other career development relationships is provided in the current nursing literature. The CINAHL, ProQuest, Business Source Complete and PscyhIFNO databases were searched for articles published between 1980-2009 using the keywords coaching, managerial coaching, nurse manager support, nursing leadership, self-efficacy, work environment and empowerment. A hybrid approach was used, incorporating both Walker and Avant's method of concept analysis and King's conceptual system and Theory of Goal Attainment to explore the meaning of managerial coaching. Inclusive years of search ranged from 1980-2009. Managerial coaching is a specific dyadic relationship between the nurse manager and staff nurse intended to improve skills and knowledge as they relate to expected job performance. Antecedents and consequences are categorized at the individual and organizational level. Defining attributes, empirical referents and a model case are presented. The theoretical definition for this concept helps to differentiate it from other types of career development relationships and will give a basis for nurse managers to understand what skills and attributes are necessary to establish an effective managerial coaching relationship with staff nurses. Conceptualization will also assist in developing empirical studies examining managerial coaching behaviours in the work environment. © 2012 Blackwell Publishing Ltd.

  12. Computer-aided design and finite-element modelling of biomaterial scaffolds for bone tissue engineering.

    Science.gov (United States)

    Lacroix, Damien; Planell, Josep A; Prendergast, Patrick J

    2009-05-28

    Scaffold biomaterials for tissue engineering can be produced in many different ways depending on the applications and the materials used. Most research into new biomaterials is based on an experimental trial-and-error approach that limits the possibility of making many variations to a single material and studying its interaction with its surroundings. Instead, computer simulation applied to tissue engineering can offer a more exhaustive approach to test and screen out biomaterials. In this paper, a review of the current approach in biomaterials designed through computer-aided design (CAD) and through finite-element modelling is given. First we review the approach used in tissue engineering in the development of scaffolds and the interactions existing between biomaterials, cells and mechanical stimuli. Then, scaffold fabrication through CAD is presented and characterization of existing scaffolds through computed images is reviewed. Several case studies of finite-element studies in tissue engineering show the usefulness of computer simulations in determining the mechanical environment of cells when seeded into a scaffold and the proper design of the geometry and stiffness of the scaffold. This creates a need for more advanced studies that include aspects of mechanobiology in tissue engineering in order to be able to predict over time the growth and differentiation of tissues within scaffolds. Finally, current perspectives indicate that more efforts need to be put into the development of such advanced studies, with the removal of technical limitations such as computer power and the inclusion of more accurate biological and genetic processes into the developed algorithms.

  13. Skin cell culture on an ear-shaped scaffold created by fused deposition modelling.

    Science.gov (United States)

    Cai, H; Azangwe, G; Shepherd, D E T

    2005-01-01

    Tissue engineering, where cells attach and grow on a scaffold, has the potential to produce replacement ears made from natural tissues and replace the need for rubber prosthetic ears. This study investigated the feasibility of using the rapid prototyping technique of Fused Deposition Modelling (FDM) to produce an ear-shaped scaffold. A three-dimensional image of the ear was used to manufacture ear-shaped scaffolds from ABS (acrylonitrile/butadiene/styrene) plastic using FDM. Human dermal fibroblasts were seeded on the scaffold (coated with fibronectin) to attach and grow in culture medium in an incubator for two weeks. Human keratinocytes were then seeded on to the fibroblast layer to attempt to produce a more realistic skin covering. The morphology of the cells were observed using scanning electron microscopy. The results show that a realistic ear-shaped scaffold can be made using FDM. Human fibroblasts were found to attach and grow. Human keratinocytes were successfully attached and grown on top of the fibroblasts and this resulted in a skin covering over the scaffold. This study shows that FDM has great potential as a manufacturing technique for ear-shaped scaffolds for tissue engineering.

  14. A New Model for Secondary Prevention of Stroke: TRAnsition Coaching for Stroke (TRACS

    Directory of Open Access Journals (Sweden)

    Cheryl eBushnell

    2014-10-01

    Full Text Available Non-adherence to stroke prevention medications is a risk factor for first-ever and recurrent stroke. As of yet, there are no guidelines for processes to recognize and address medication non-adherence in stroke patients. We developed a new model of post-discharge prevention care that measures and addresses medication-taking (TRAnsition Coaching for Stroke or TRACS. TRACS includes personalized education about risk factors and medications prior to discharge, follow-up telephone calls, and appointments with a stroke nurse practitioner (NP. The stroke NP asks about medication use (persistence and whether doses are missed (adherence, and helps to solve problems with access to medications or side effects. In an analysis of 142 patients enrolled in TRACS from October 2012 to February 2014, medication persistence (use of medications from discharge to the time of measurement was about 80%. Medication persistence at NP visit was higher in those patients with a first-ever stroke (78.9 % vs those with recurrent stroke (60.7 %; p=0.045. Concerted efforts with 2-day RN follow-up calls and earlier NP appointments to improve medication-taking behaviors are underway.

  15. Third generation coaching

    DEFF Research Database (Denmark)

    Stelter, Reinhard

    2014-01-01

    Third generation coaching unfolds a new universe for coaching and coaching psychology in the framework of current social research, new learning theories and discourses about personal leadership. Third generation coaching views coaching in a societal perspective. Coaching has become important...... transformation. Coaching thus facilitates new reflections and perspectives, as well as empowerment and support for self-Bildung processes. Third generation coaching focuses on the coach and the coachee in their narrative collaborative partnership. Unlike first generation coaching, where the goal is to help...

  16. Coaching relationship - and beyond

    DEFF Research Database (Denmark)

    Spaten, Ole Michael; O'Broin, Alanna; Løkken, Lillith Olesen

    2016-01-01

    on the outcomes of coaching. It is a presentation, on factors specifically related to engagement of the coachee and building effective coaching relationships: (a) a study examining the power relations between employee coachee and coach from the middle manager coach perspective, highlighting coaching relationship...... coaches in organisations. Broader topics include (c) discussion of a Systematic Review study investigating those coaching psychologists’ attributes effective in productive coaching relationships, and how to facilitate desired coaching outcomes, suggesting desirability of expansion of concrete outcome...... measures from the existing coachées’ satisfaction evaluation metrics; and finally (d) an overview of coaching relationship research in the context of prevailing assumptions and issues in coaching, offering implications for future coaching research and coaching practice....

  17. Ledelsesbaseret coaching

    DEFF Research Database (Denmark)

    Molly-Søholm, Thorkil; Storch, Jacob; Juhl, Andreas

    Hvordan coacher man som leder? Når jeg sidder i kursuslokalet og træner spørgeteknikker, går det fint, men når jeg skal bruge det hjemme i min organisation, fungerer det slet ikke. Skal coaching kunne fungere som et ledelsesværktøj, må det tilpasses de spilleregler, der gælder for arbejdskonteksten...... - det er udgangspunktet for denne bog. Forfatternes argument er, at der er sket en kortslutning i den måde, coaching er overført fra idrættens og terapiens verden til den organisatoriske hverdag. I denne bog giver forfatterne indgående beskrivelser af coachingværktøjer omsat til en ledelsesmæssig...... kontekst, og de byder på en række praktiske anvisninger til, hvordan man tilegner sig en coachende ledelsesstil. Ledelsesbaseret coaching henvender sig til ledere på alle niveauer, der ønsker at bringe coaching et skridt videre ind i organisationerne som en ledelsesform, der rummer stort potentiale...

  18. Coaching er varm luft!

    Directory of Open Access Journals (Sweden)

    Asbjørn Molly

    2014-07-01

    Full Text Available In this essay a new model is presented as an attempt to operationalize the otherwise slightly abstract concept of ”suitable disturbances” (coined by Humberto Maturana, which is a central concept in systemic coaching. The argument stated is that the process of ’reading’ and ’recognizing’ a coachee’s use of a word is a necessary skill for the coach to master, in order to introduce a language game in which it becomes possible to ‘disturb’ this use in a constructive manner. This argument is exemplified in a specific coaching conversation with a school leader, whose use of the word recognition is explored using questions based on keywords and the mirror technique, and thereby stimulating a change in the coachee’s perception of the word, which gives rise to new possibilities of action.

  19. Proposed Sources of Coaching Efficacy: A Meta-Analysis.

    Science.gov (United States)

    Myers, Nicholas D; Park, Sung Eun; Ahn, Soyeon; Lee, Seungmin; Sullivan, Philip J; Feltz, Deborah L

    2017-08-01

    Coaching efficacy refers to the extent to which a coach believes that he or she has the capacity to affect the learning and performance of his or her athletes. The purpose of the current study was to empirically synthesize findings across the extant literature to estimate relationships between the proposed sources of coaching efficacy and each of the dimensions of coaching efficacy. A literature search yielded 20 studies and 278 effect size estimates that met the inclusion criteria. The overall relationship between the proposed sources of coaching efficacy and each dimension of coaching efficacy was positive and ranged from small to medium in size. Coach gender and level coached moderated the overall relationship between the proposed sources of coaching efficacy and each of the dimensions of coaching efficacy. Results from this meta-analysis provided some evidence for both the utility of, and possible revisions to, the conceptual model of coaching efficacy.

  20. Micro-CT based finite element models for elastic properties of glass-ceramic scaffolds.

    Science.gov (United States)

    Tagliabue, Stefano; Rossi, Erica; Baino, Francesco; Vitale-Brovarone, Chiara; Gastaldi, Dario; Vena, Pasquale

    2017-01-01

    In this study, the mechanical properties of porous glass-ceramic scaffolds are investigated by means of three-dimensional finite element models based on micro-computed tomography (micro-CT) scan data. In particular, the quantitative relationship between the morpho-architectural features of the obtained scaffolds, such as macroscopic porosity and strut thickness, and elastic properties, is sought. The macroscopic elastic properties of the scaffolds have been obtained through numerical homogenization approaches using the mechanical characteristics of the solid walls of the scaffolds (assessed through nanoindentation) as input parameters for the numerical simulations. Anisotropic mechanical properties of the produced scaffolds have also been investigated by defining a suitable anisotropy index. A comparison with morphological data obtained through the micro-CT scans is also presented. The proposed study shows that the produced glass-ceramic scaffolds exhibited a macroscopic porosity ranging between 29% and 97% which corresponds to an average stiffness ranging between 42.4GPa and 36MPa. A quantitative estimation of the isotropy of the macroscopic elastic properties has been performed showing that the samples with higher solid fractions were those closest to an isotropic material. Copyright © 2016 Elsevier Ltd. All rights reserved.

  1. A bovine acellular scaffold for vocal fold reconstruction in a rat model.

    Science.gov (United States)

    Xu, Chet C; Chan, Roger W; Weinberger, Debra G; Efune, Guy; Pawlowski, Karen S

    2010-01-01

    With a rat model of vocal fold injury, this study examined the in vivo host response to an acellular xenogeneic scaffold derived from the bovine vocal fold lamina propria, and the potential of the scaffold for constructive tissue remodeling. Bilateral wounds were created in the posterior vocal folds of 20 rats, and bovine acellular scaffolds were implanted into the wounds unilaterally, with the contralateral vocal folds as control. The rats were humanely sacrificed after 3 days, 7 days, 1 month, and 3 months, and the coronal sections of their larynges were examined histologically. Expressions of key matrix proteins including collagen I, collagen III, elastin, fibronectin, hyaluronic acid, and glycosaminoglycans (GAGs) were quantified with digital image analysis. Significant infiltration of host inflammatory cells and host fibroblasts in the scaffold implant was observed in the acute stage of wound repair (3 days and 7 days postsurgery). The mean relative densities of collagen I, collagen III, and GAGs in the implanted vocal folds were significantly higher than those in the control after 3 days, followed by gradual decreases over 3 months. Histological results showed that the scaffolds were apparently degraded by 3 months, with no fibrotic tissue formation or calcification. These preliminary findings suggested that the bovine acellular scaffold could be a potential xenograft for vocal fold regeneration.

  2. Writings as modelling examples: Scaffolds for academic writing in a post-graduate curriculum

    NARCIS (Netherlands)

    Firssova, Olga

    2014-01-01

    The presented study investigated the effectiveness of learning from models in the context of post-graduate academic writing. Two questions were pursued: whether studying model writings supports mature students in writing in a new genre and whether integrating additional scaffolds in such models has

  3. Teachers' Temporary Support and Worked-Out Examples as Elements of Scaffolding in Mathematical Modeling

    Science.gov (United States)

    Tropper, Natalie; Leiss, Dominik; Hänze, Martin

    2015-01-01

    Empirical findings show that students have manifold difficulties when dealing with mathematical modeling problems. Accordingly, approaches for supporting students in modeling-based learning environments have to be investigated. In the research presented here, we adopted a scaffolding perspective on teaching modeling with the aim of both providing…

  4. The Heart of Coaching

    Science.gov (United States)

    Docheff, Dennis M.; Gerdes, Dan

    2015-01-01

    This article challenges coaches to address the more personal, human elements of coaching--the HEART of coaching. While there is much research on numerous aspects of coaching, this article provides ideas that make a lasting impact on the hearts of athletes. Using HEART as an acronym, five elements of effective coaching are presented: Humility,…

  5. What Good Coaches Do

    Science.gov (United States)

    Knight, Jim

    2011-01-01

    Instructional coaching guru Jim Knight suggests that how we think about coaching can enhance or interfere with our success as a coach. He suggests that coaches take a partnership approach to collaboration and adopt seven principles that define how coaches interact with collaborating teachers: equality, choice, voice, reflection, dialogue, praxis,…

  6. The Coach Consult Method: A Model for Sustainable Change in Schools

    Science.gov (United States)

    Balchin, Nicholas; Randall, Leisa; Turner, Susannah

    2006-01-01

    Project work and in-service training are methods used by educational psychologists (EPs) to promote systemic change in schools. These have some disadvantages, which can limit the long-term effects of new developments. This paper outlines and evaluates an alternative approach. A new coach consult method combines effective aspects of project work…

  7. Student-Student Online Coaching as a Relationship of Inquiry: An Exploratory Study from the Coach Perspective

    Science.gov (United States)

    Stenbom, Stefan; Hrastinski, Stefan; Cleveland-Innes, Martha

    2012-01-01

    There are comparatively few studies on one-to-one tutoring in online settings, even though it has been found to be an effective model. This paper explores student-student online coaching from the coach perspective. The empirical case is the project Math Coach, where K-12 students are coached by teacher students using instant messaging. This…

  8. A guide to third generation coaching

    DEFF Research Database (Denmark)

    Stelter, Reinhard

    education programs by supporting the reader as a reflective practitioner This book proposes third generation coaching in a form where the coach and the coaches are less concerned with solutions and more concerned with creating space for (self-)reflection through collaborative practices. Offering a revisited...... and innovative approach to coaching psychology, advantageous for learners and practitioners alike. It marks a new trend in coaching and has a special profile, based on the acknowledgement of changes in society, learning and knowledge production, as well as leadership. The author’ s concept of ​​coaching...... distinguishes itself from the existing models (pop coaching , GROW model, etc) by offering a fresh analysis of our society – a society that is characterised by diversification, identity challenges, abolition of the monopoly of knowledge, lifelong learning, the necessity for self-reflection, etc. These societal...

  9. Outlining a typology of sports coaching careers

    DEFF Research Database (Denmark)

    Christensen, Mette Krogh

    2014-01-01

    This paper aims to extend our understanding of sports coaching careers and challenge related stage-based models by outlining and describing a typology of careers in high-performance sports coaching. A constructivist research approach is applied that intends to gain insight into the realities...... of coaches’ careers.Datawere drawn fromin-depth interviews with 10 Danish high-performance sports coaches. Results identified four classifying features that pave the way for the establishment of a typology consisting of three ideal types: (1) the elite-athlete coach; (2) the academic coach; and (3) the early......-starter coach. The findings are theorized throughWenger’s concept of paradigmatic pathways and Bourdieu’s concept of cultural capital. The study illuminates paradigmatic trajectories and conversions of cultural capital in high-performance sports coaching careers that may act as models for young athletes...

  10. Towards Tuning the Mechanical Properties of Three-Dimensional Collagen Scaffolds Using a Coupled Fiber-Matrix Model

    Directory of Open Access Journals (Sweden)

    Shengmao Lin

    2015-08-01

    Full Text Available Scaffold mechanical properties are essential in regulating the microenvironment of three-dimensional cell culture. A coupled fiber-matrix numerical model was developed in this work for predicting the mechanical response of collagen scaffolds subjected to various levels of non-enzymatic glycation and collagen concentrations. The scaffold was simulated by a Voronoi network embedded in a matrix. The computational model was validated using published experimental data. Results indicate that both non-enzymatic glycation-induced matrix stiffening and fiber network density, as regulated by collagen concentration, influence scaffold behavior. The heterogeneous stress patterns of the scaffold were induced by the interfacial mechanics between the collagen fiber network and the matrix. The knowledge obtained in this work could help to fine-tune the mechanical properties of collagen scaffolds for improved tissue regeneration applications.

  11. Drawing the Triangle: How Coaches Manage Ambiguities Inherited in Executive Coaching

    Directory of Open Access Journals (Sweden)

    Ana Pliopas

    2017-12-01

    Full Text Available Executive coaching is a common leadership development intervention whose complexity is underestimated. The triangular relationships between coachee, coach, and organization give rise to conflicting interests (Fatien-Diochon, 2012. This study examines how coaches perceive triangular relationships and reflect on conflicts of interest and ethical issues. During semi-structured interviews, nine coaches drew their interpretations of how triangular relationships unfold in executive coaching processes. Coaches’ explanations were categorized into three groups. There are coaches who understand executive coaching as a harmonious and congruent process, called naïve; some coaches rely on the coaching process to deal with conflicts of interest, and we called them procedural. Other coaches are skeptical when dealing with conflict of interests in triangular relationships, and were called suspicious. In order to support coaches facing ethical dilemmas that may be present in triangular relationships in the executive coaching process, the ethics of the profession perspective developed for the educational sector by Shapiro and Stefkovich (2016 was adapted and integrated into Carroll and Shaw’s (2013 ethical maturity perspective. This adapted model offers coaches an integrative and dynamic view to foster their development and ethical maturity.

  12. Engineering and Modeling Carbon Nanofiller-Based Scaffolds for Tissue Regeneration

    Science.gov (United States)

    Al Habis, Nuha Hamad

    Conductive biopolymers are starting to emerge as potential scaffolds of the future. These scaffolds exhibit some unique properties such as inherent conductivity, mechanical and surface properties. Traditionally, a conjugated polymer is used to constitute a conductive network. An alternative method currently being used is nanofillers as additives in the polymer. In this dissertation, we fabricated an intelligent scaffold for use in tissue engineering applications. The main idea was to enhance the mechanical, electrical properties and cell growth of scaffolds by using distinct types of nanofillers such as graphene, carbon nanofiber and carbon black. We identified the optimal concentrations of nano-additive in both fibrous and film scaffolds to obtain the highest mechanical and electrical properties without neglecting any of them. Lastly, we investigated the performance of these scaffold with cell biology. To accomplish these tasks, we first studied the mechanical properties of the scaffold as a function of morphology, concentration and variety of carbon nanofillers. Results showed that there was a gradual increase of the modulus and the fracture strength while using carbon black, carbon nanofiber and graphene, due to the small and strong carbon-to-carbon bonds and the length of the interlayer spacing. Moreover, regardless of the fabrication method, there was an increase in mechanical properties as the concentration of nanofillers increased until a threshold of 7 wt% was reached for the nanofiller film scaffold and 1%wt for the fibrous scaffold. Experimental results of carbon black exhibited a good agreement when compared with data obtained using numerical approaches and analytical models, especially in the case of lower carbon black fractions. Second, we examined the influence of electrical properties of nanofillers based on the concentration and the geometry of carbon nanofillers in the polymer matrix using experimental and numerical simulation approaches. The

  13. Coaching in Early Mathematics.

    Science.gov (United States)

    Germeroth, Carrie; Sarama, Julie

    2017-01-01

    Falling scores in math have prompted a renewed interest in math instruction at early ages. By their own admission, early childhood educators are generally underprepared and not always comfortable teaching math. Professional development (PD) in early mathematics is widely considered a main way to increase teachers' skills and efficacy (e.g., Guskey, 2000; Hyson & Woods, 2014; Munby, Russell, & Martin, 2001; Piasta, Logan, Pelatti, Capps, & Petrill, 2015; Richardson & Placier, 2001; Sarama, Clements, Wolfe, & Spitler, 2016; Sarama & DiBiase, 2004; Zaslow, 2014). However, it has been documented that stand-alone PD is not as effective in changing practice (e.g., Biancarosa & Bryk, 2011; Garet et al., 2008; Guskey, 2000; Hyson & Woods, 2014; Institute of Medicine and National Research Council, 2015; Joyce & Showers, 2002; Zaslow, 2014). Site-embedded ongoing support in the form of coaching or mentoring has been shown to be critical for successful implementation (Neuman & Cunningham, 2009; Powell, Diamond, Burchinal, & Koehler, 2010). In this chapter, we describe coaching models and abstract characteristics of effective coaching from the research. With this background, we provide an in-depth view of the coaching aspect of two large empirical studies in early mathematics. We introduce the theoretical framework from which the coaching models for these projects were developed and describe the research on which they were based. We then summarize how the planned models were instantiated and challenges to their implementation within each project. In the final section, we summarize what we have learned and described implications and challenges for the field. © 2017 Elsevier Inc. All rights reserved.

  14. A mathematical model for the determination of forming tissue moduli in needled-nonwoven scaffolds.

    Science.gov (United States)

    Soares, João S; Zhang, Will; Sacks, Michael S

    2017-03-15

    Formation of engineering tissues (ET) remains an important scientific area of investigation for both clinical translational and mechanobiological studies. Needled-nonwoven (NNW) scaffolds represent one of the most ubiquitous biomaterials based on their well-documented capacity to sustain tissue formation and the unique property of substantial construct stiffness amplification, the latter allowing for very sensitive determination of forming tissue modulus. Yet, their use in more fundamental studies is hampered by the lack of: (1) substantial understanding of the mechanics of the NNW scaffold itself under finite deformations and means to model the complex mechanical interactions between scaffold fibers, cells, and de novo tissue; and (2) rational models with reliable predictive capabilities describing their evolving mechanical properties and their response to mechanical stimulation. Our objective is to quantify the mechanical properties of the forming ET phase in constructs that utilize NNW scaffolds. We present herein a novel mathematical model to quantify their stiffness based on explicit considerations of the modulation of NNW scaffold fiber-fiber interactions and effective fiber stiffness by surrounding de novo ECM. Specifically, fibers in NNW scaffolds are effectively stiffer than if acting alone due to extensive fiber-fiber cross-over points that impart changes in fiber geometry, particularly crimp wavelength and amplitude. Fiber-fiber interactions in NNW scaffolds also play significant role in the bulk anisotropy of the material, mainly due to fiber buckling and large translational out-of-plane displacements occurring to fibers undergoing contraction. To calibrate the model parameters, we mechanically tested impregnated NNW scaffolds with polyacrylamide (PAM) gels with a wide range of moduli with values chosen to mimic the effects of surrounding tissues on the scaffold fiber network. Results indicated a high degree of model fidelity over a wide range of planar

  15. Bioengineered silk scaffolds in 3D tissue modeling with focus on mammary tissues.

    Science.gov (United States)

    Maghdouri-White, Yas; Bowlin, Gary L; Lemmon, Christopher A; Dréau, Didier

    2016-02-01

    In vitro generation of three-dimensional (3D) biological tissues and organ-like structures is a promising strategy to study and closely model complex aspects of the molecular, cellular, and physiological interactions of tissue. In particular, in vitro 3D tissue modeling holds promises to further our understanding of breast development. Indeed, biologically relevant 3D structures that combine mammary cells and engineered matrices have improved our knowledge of mammary tissue growth, organization, and differentiation. Several polymeric biomaterials have been used as scaffolds to engineer 3D mammary tissues. Among those, silk fibroin-based biomaterials have many biologically relevant properties and have been successfully used in multiple medical applications. Here, we review the recent advances in engineered scaffolds with an emphasis on breast-like tissue generation and the benefits of modified silk-based scaffolds. Copyright © 2015 Elsevier B.V. All rights reserved.

  16. Personel and life coaching

    DEFF Research Database (Denmark)

    Spaten, Ole Michael

    2018-01-01

    Personal coaching and life-coaching psychology is for assisting individuals clarify values, visions and meaning of life, through a systematic process in which the coach facilitates improvement of satisfying and fruitful life experiences and achievement of personal life goals.......Personal coaching and life-coaching psychology is for assisting individuals clarify values, visions and meaning of life, through a systematic process in which the coach facilitates improvement of satisfying and fruitful life experiences and achievement of personal life goals....

  17. Evaluation of borate bioactive glass scaffolds with different pore sizes in a rat subcutaneous implantation model.

    Science.gov (United States)

    Deliormanli, Aylin M; Liu, Xin; Rahaman, Mohamed N

    2014-01-01

    Borate bioactive glass has been shown to convert faster and more completely to hydroxyapatite and enhance new bone formation in vivo when compared to silicate bioactive glass (such as 45S5 and 13-93 bioactive glass). In this work, the effects of the borate glass microstructure on its conversion to hydroxyapatite (HA) in vitro and its ability to support tissue ingrowth in a rat subcutaneous implantation model were investigated. Bioactive borate glass scaffolds, designated 13-93B3, with a grid-like microstructure and pore widths of 300, 600, and 900 µm were prepared by a robocasting technique. The scaffolds were implanted subcutaneously for 4 weeks in Sprague Dawley rats. Silicate 13-93 glass scaffolds with the same microstructure were used as the control. The conversion of the scaffolds to HA was studied as a function of immersion time in a simulated body fluid. Histology and scanning electron microscopy were used to evaluate conversion of the bioactive glass implants to hydroxyapatite, as well as tissue ingrowth and blood vessel formation in the implants. The pore size of the scaffolds was found to have little effect on tissue infiltration and angiogenesis after the 4-week implantation.

  18. Narrative coaching

    DEFF Research Database (Denmark)

    Stelter, Reinhard

    2010-01-01

    is presented to give a concrete example of this narrative, community psychological oriented intervention, a process which helps people to develop a sense of personal or cultural identity and an understanding of their doing as being in correspondence with their values and intentions. The overarching focus...... of narrative coaching as presented in this chapter is on shaping modified, uplifting and/or alternative stories about experiences and activities athletes or exercisers are able to share in their concrete community of practice. These joint actions might be a way to build up local cultures in different sport...

  19. Perceptions of Coach–Athlete Relationship Are More Important to Coaches than Athletes in Predicting Dyadic Coping and Stress Appraisals: An Actor–Partner Independence Mediation Model

    Science.gov (United States)

    Nicholls, Adam R.; Perry, John L.

    2016-01-01

    Most attempts to manage stress involve at least one other person, yet coping studies in sport tend to report an athlete’s individual coping strategies. There is a limited understanding of coping involving other people, particularly within sport, despite athletes potentially spending a lot of time with other people, such as their coach. Guided by the systemic-transactional model of stress and coping among couples (Bodenmann, 1995), from relationship psychology, we assessed dyadic coping, perceptions of relationship quality, and primary stress appraisals of challenge and threat among 158 coach–athlete dyads (n = 277 participants). The athletes competed at amateur (n = 123), semi-professional (n = 31), or professional levels (n = 4). Coaches and athletes from the same dyad completed a measure of dyadic coping, coach–athlete relationship, and stress appraisals. We tested an Actor–Partner Interdependence Mediation Model to account for the non-independence of dyadic data. These actor–partner analyses revealed differences between athletes and coaches. Although the actor effects were relatively large compared to partner effects, perceptions of relationship quality demonstrated little impact on athletes. The mediating role of relationship quality was broadly as important as dyadic coping for coaches. These findings provide an insight in to how coach–athlete dyads interact to manage stress and indicate that relationship quality is of particular importance for coaches, but less important for athletes. In order to improve perceptions of relationship quality among coaches and athletes, interventions could be developed to foster positive dyadic coping among both coaches and athletes, which may also impact upon stress appraisals of challenge and threat. PMID:27065917

  20. The Case of "Not Enough Time": Using GROW and Motivational Interviewing Coaching Frameworks

    Science.gov (United States)

    Herd, Ann

    2015-01-01

    Leadership coaching has gained in use and popularity as a leadership development tool used both within and outside the context of an organization. At the heart of the coaching process is the coaching relationship and the critical coaching skills of powerful questioning and active listening. One of the most popular coaching models within which…

  1. The usefulness of the Enneagram model in The Netherlands: An overview of Enneagram explanations and the usefulness as ascribed by Dutch Enneagram coaches and managers

    NARCIS (Netherlands)

    Hoekx, C.C.G.M.

    2017-01-01

    The Enneagram Model (hereinafter: EM) was never evaluated scientifically in The Netherlands, while the model is being used by Dutch managers and coaches since the millennium. The EM is a model that is able to communicate psychological values and spirituality. The management might use the EM in

  2. A Teacher Competency Enhancement Model based on the Coaching Processes to Increase Mathematical Reasoning Abilities of Lower-Secondary Students

    Directory of Open Access Journals (Sweden)

    Uaychai Sukanalam

    2017-09-01

    Full Text Available This research study aimed to: 1 investigate problems and needs for the learning management that helps increase capacities of mathematics teachers at the lower-secondary level, 2 develop a teacher competency enhancement model based on the coaching processes to enhance mathematical reasoning abilities of lower-secondary students, 3 find out the educational supervisors’ opinions on the model designed. The samples of the study comprised 212 mathematics teachers at the lower-secondary level from 60 schools under jurisdiction of the Office of Secondary Educational Service Area 27, who were selected through the simple random sampling technique ; and 201 educational supervisors in charge of the mathematics learning strand from 42 educational service areas, who were selected through the purposive sampling technique. This study was conducted in the academic year 2015. The research instruments included: 1 a teacher competency enhancement manual that illustrated the steps and procedures for increasing the teacher’s capacities based on the coaching processes in order to enhance mathematical reasoning abilities of lower-secondary students, 2 a survey on problems and needs for the learning management to enhance capacities of mathematics teachers at the lower-secondary level, 3 A questionnaire concerning the educational supervisor’s opinion on the model designed. The statistics used included percentage, mean, and standard deviation. The study results showed that: 1. According to the study and analysis of basic data, problems and needs, it was found that the needs for increasing capacities of mathematics teachers at the lower-secondary level was overall at the high level. In terms of identifying behaviors as “mathematical competencies”, there were some problems associated with thinking and reasoning abilities of the teachers, and their needs in developing the learning management were at the highest level. To solve such problems, it is suggested that

  3. Providing Social Support for Underrepresented Racial and Ethnic Minority PhD Students in the Biomedical Sciences: A Career Coaching Model.

    Science.gov (United States)

    Williams, Simon N; Thakore, Bhoomi K; McGee, Richard

    2017-01-01

    Improvement in the proportion of underrepresented racial and ethnic minorities (URMs) in academic positions has been unsatisfactory. Although this is a complex problem, one key issue is that graduate students often rely on research mentors for career-related support, the effectiveness of which can be variable. We present results from a novel academic career "coaching" intervention, one aim of which was to provide supplementary social support for PhD students, particularly those from underrepresented backgrounds. Coaching was delivered both within small groups and on an individual basis, with a diverse group of coaches and students coming from many universities. Coaches were provided with additional diversity training. Ninety-six semistructured interviews with 33 URM students over 3 years were analyzed using a qualitative framework approach. For most of the URM PhD students, coaching provided social support in the form of emotional, informational, and appraisal support. Coaching groups provided a noncompetitive environment and "community of support" within which students were able to learn from one another's experiences and discuss negative and stressful experiences related to their graduate school, lab, or career plans. This coached peer group model is capable of providing the social support that many URM students do not find at their home universities. © 2017 S. N. Williams et al. CBE—Life Sciences Education © 2017 The American Society for Cell Biology. This article is distributed by The American Society for Cell Biology under license from the author(s). It is available to the public under an Attribution–Noncommercial–Share Alike 3.0 Unported Creative Commons License (http://creativecommons.org/licenses/by-nc-sa/3.0).

  4. Characteristics of Volunteer Coaches in a Clinical Process Improvement Program.

    Science.gov (United States)

    Morley, Katharine E; Barysauskas, Constance M; Carballo, Victoria; Kalibatas, Orinta; Rao, Sandhya K; Jacobson, Joseph O; Cummings, Brian M

    The Partners Clinical Process Improvement Leadership Program provides quality improvement training for clinicians and administrators, utilizing graduates as volunteer peer coaches for mentorship. We sought to understand the factors associated with volunteer coach participation and gain insight into how to improve and sustain this program. Review of coach characteristics from course database and survey of frequent coaches. Out of 516 Partners Clinical Process Improvement Leadership Program graduates from March 2010 to June 2015, 117 (23%) individuals volunteered as coaches. Sixty-one (52%) individuals coached once, 31 (27%) coached twice, and 25 (21%) coached 3 or more times. There were statistically significant associations between coaching and occupation (P = .005), Partners Clinical Process Improvement Leadership Program course taken (P = .001), and course location (P = .007). Administrators were more likely to coach than physicians (odds ratio: 1.75, P = .04). Reasons for volunteering as a coach included further development of skills, desire to stay involved with program, and enjoying mentoring. Reasons for repeated coaching included maintaining quality improvement skills, expanding skills to a wider variety of projects, and networking. A peer graduate volunteer coach model is a viable strategy for interprofessional quality improvement mentorship. Strategies that support repeat coaching and engage clinicians should be promoted to ensure an experienced and diversified group of coaches.

  5. Considering Student Coaching

    Science.gov (United States)

    Keen, James P.

    2014-01-01

    What does student coaching involve and what considerations make sense in deciding to engage an outside contractor to provide personal coaching? The author explores coaching in light of his own professional experience and uses this reflection as a platform from which to consider the pros and cons of student coaching when deciding whether to choose…

  6. Kollegial coaching mellem sygeplejersker

    DEFF Research Database (Denmark)

    Molly, Asbjørn; Høeg, Bettina

    2007-01-01

    Artiklen henvender sig til afdelingssygeplejersker med interesse for coaching. Hovedbudskabet er, at kollegial coaching tilbyder en ramme, hvor det er muligt at få udviklet et sprog for ledelse. I artiklen defineres coaching ind i en sygeplejekontekst, og to afdelingssygeplejersker fra Vejle...... Sygehus fortæller om deres erfaringer med kollegial coaching....

  7. Third Generation Coaching

    DEFF Research Database (Denmark)

    Stelter, Reinhard

    2016-01-01

    Third Generation Coaching entfaltet ein neues Universum für Coaching und Coaching-Psychologie auf der Grundlage veränderter Gesellschaftsbedingungen. Wir leben in hyperkomplexen sozialen und ökonomischen Kontexten. Coaching muss sich deshalb zu einer Dialogform weiterentwickeln, die dem Einzelnen...

  8. Mathematical Modeling of Uniaxial Mechanical Properties of Collagen Gel Scaffolds for Vascular Tissue Engineering

    Directory of Open Access Journals (Sweden)

    Ramiro M. Irastorza

    2015-01-01

    Full Text Available Small diameter tissue-engineered arteries improve their mechanical and functional properties when they are mechanically stimulated. Applying a suitable stress and/or strain with or without a cycle to the scaffolds and cells during the culturing process resides in our ability to generate a suitable mechanical model. Collagen gel is one of the most used scaffolds in vascular tissue engineering, mainly because it is the principal constituent of the extracellular matrix for vascular cells in human. The mechanical modeling of such a material is not a trivial task, mainly for its viscoelastic nature. Computational and experimental methods for developing a suitable model for collagen gels are of primary importance for the field. In this research, we focused on mechanical properties of collagen gels under unconfined compression. First, mechanical viscoelastic models are discussed and framed in the control system theory. Second, models are fitted using system identification. Several models are evaluated and two nonlinear models are proposed: Mooney-Rivlin inspired and Hammerstein models. The results suggest that Mooney-Rivlin and Hammerstein models succeed in describing the mechanical behavior of collagen gels for cyclic tests on scaffolds (with best fitting parameters 58.3% and 75.8%, resp.. When Akaike criterion is used, the best is the Mooney-Rivlin inspired model.

  9. Mathematical modeling of uniaxial mechanical properties of collagen gel scaffolds for vascular tissue engineering.

    Science.gov (United States)

    Irastorza, Ramiro M; Drouin, Bernard; Blangino, Eugenia; Mantovani, Diego

    2015-01-01

    Small diameter tissue-engineered arteries improve their mechanical and functional properties when they are mechanically stimulated. Applying a suitable stress and/or strain with or without a cycle to the scaffolds and cells during the culturing process resides in our ability to generate a suitable mechanical model. Collagen gel is one of the most used scaffolds in vascular tissue engineering, mainly because it is the principal constituent of the extracellular matrix for vascular cells in human. The mechanical modeling of such a material is not a trivial task, mainly for its viscoelastic nature. Computational and experimental methods for developing a suitable model for collagen gels are of primary importance for the field. In this research, we focused on mechanical properties of collagen gels under unconfined compression. First, mechanical viscoelastic models are discussed and framed in the control system theory. Second, models are fitted using system identification. Several models are evaluated and two nonlinear models are proposed: Mooney-Rivlin inspired and Hammerstein models. The results suggest that Mooney-Rivlin and Hammerstein models succeed in describing the mechanical behavior of collagen gels for cyclic tests on scaffolds (with best fitting parameters 58.3% and 75.8%, resp.). When Akaike criterion is used, the best is the Mooney-Rivlin inspired model.

  10. Evaluation of a starch-based double layer scaffold for bone regeneration in a rat model.

    Science.gov (United States)

    Requicha, Joao F; Moura, Tiago; Leonor, Isabel B; Martins, Teresa; Muñoz, Fernando; Reis, Rui L; Gomes, Manuela E; Viegas, Carlos A

    2014-07-01

    Damages in the maxillofacial bones are frequent in humans following trauma, metabolic diseases, neoplasia, or inflammatory processes. Many of the available treatments to regenerate bone are often ineffective. The goal of this work was to assess the in vivo behavior of an innovative double-layered scaffold based on a blend of starch and polycaprolactone (SPCL) that comprises a membrane obtained by solvent casting, which aims to act as a guided tissue regeneration membrane, and a wet-spun fiber mesh (in some cases functionalized with osteoconductive silanol groups) targeting bone regeneration. The behavior of the double layer scaffold, functionalized with silanol groups (SPCL-Si) or without (SPCL), was assessed in a mandibular rodent model and compared to a commercial collagen membrane (positive control) and to empty defects (negative control). After 8 weeks of implantation, the micro-computed tomography and the histomorphometric analysis revealed that the SPCL-Si scaffolds induced significantly higher new bone formation compared to the collagen membrane and to the empty defects, although they had a similar performance when compared to the SPCL scaffolds. © 2014 Orthopaedic Research Society. Published by Wiley Periodicals, Inc.

  11. A Longitudinal Examination of Middle School Science Learners' Use of Scaffolding In and Around a Dynamic Modeling Tool

    Science.gov (United States)

    Fretz, Eric Bruce

    Scaffolding is a term rooted in multiple research communities over decades of development. Customized, contingent support can be provided to learners to enable performances beyond what they can do alone. This dissertation seeks to examine how effectively scaffolds designed to promote articulation (written expressions of learner understanding) actually work, and if this effectiveness and/or the quality of the resulting models changes over time. It longitudinally examines the use of scaffolds designed into a dynamic modeling tool, as it is used by middle school science learners to create, test, and revise models of complex science phenomena like stream ecosystems. This dissertation also reviews the origins of the scaffolding construct, and summarizes conceptions of scaffolding from various lines of research. Scaffolding can be provided by both human and non-human agents, such as computers, which require specialized interface design to ensure maximum effectiveness. In the study, learners created models in four curriculum units over the seventh and eighth grade school years. Additionally, this dissertation examines the nature of the discussion learners have while using these scaffolds and the frequency and types of interpersonal scaffolds employed during the creation of models. Model quality is also examined using a rubric developed through review of prior research on assessing models and concept maps. Learner pairs' model creation sessions on a computer are captured with screen video and learner audio, and then distilled to transcripts for subsequent coding and analysis, supported by qualitative analysis software. Articulation scaffolds were found to succeed in promoting articulations and the quality of those articulations improved over time. Learner dialog associated with these written articulations is of reasonable quality but did not improve over time. Quality of model artifacts did improve over time. The overall use of scaffolding by each learner pair was

  12. Effects of the Teach-Model-Coach-Review Instructional Approach on Caregiver Use of Language Support Strategies and Children's Expressive Language Skills

    Science.gov (United States)

    Roberts, Megan Y.; Kaiser, Ann P.; Wolfe, Cathy E.; Bryant, Julie D.; Spidalieri, Alexandria M.

    2014-01-01

    Purpose: In this study, the authors examined the effects of the Teach-Model-Coach-Review instructional approach on caregivers' use of four enhanced milieu teaching (EMT) language support strategies and on their children's use of expressive language. Method: Four caregiver-child dyads participated in a single-subject, multiple-baseline study.…

  13. Improving the Students' Activity and Learning Outcomes on Social Sciences Subject Using Round Table and Rally Coach of Cooperative Learning Model

    Science.gov (United States)

    Ningsih; Soetjipto, Budi Eko; Sumarmi

    2017-01-01

    The purpose of this study was: (1) to analyze increasing students' learning activity and learning outcomes. Student activities which were observed include the visual, verbal, listening, writing and mental visual activity; (2) to analyze the improvement of student learning outcomes using "Round Table" and "Rally Coach" Model of…

  14. A Robotic Coach Architecture for Elder Care (ROCARE) Based on Multi-User Engagement Models.

    Science.gov (United States)

    Fan, Jing; Bian, Dayi; Zheng, Zhi; Beuscher, Linda; Newhouse, Paul A; Mion, Lorraine C; Sarkar, Nilanjan

    2017-08-01

    The aging population with its concomitant medical conditions, physical and cognitive impairments, at a time of strained resources, establishes the urgent need to explore advanced technologies that may enhance function and quality of life. Recently, robotic technology, especially socially assistive robotics has been investigated to address the physical, cognitive, and social needs of older adults. Most system to date have predominantly focused on one-on-one human robot interaction (HRI). In this paper, we present a multi-user engagement-based robotic coach system architecture (ROCARE). ROCARE is capable of administering both one-on-one and multi-user HRI, providing implicit and explicit channels of communication, and individualized activity management for long-term engagement. Two preliminary feasibility studies, a one-on-one interaction and a triadic interaction with two humans and a robot, were conducted and the results indicated potential usefulness and acceptance by older adults, with and without cognitive impairment.

  15. Using bifactor exploratory structural equation modeling to examine global and specific factors in measures of sports coaches' interpersonal styles.

    Science.gov (United States)

    Stenling, Andreas; Ivarsson, Andreas; Hassmén, Peter; Lindwall, Magnus

    2015-01-01

    In the present work we investigated distinct sources of construct-relevant psychometric multidimensionality in two sport-specific measures of coaches' need-supportive (ISS-C) and controlling interpersonal (CCBS) styles. A recently proposed bifactor exploratory structural equation modeling (ESEM) framework was employed to achieve this aim. In Study 1, using a sample of floorball players, the results indicated that the ISS-C can be considered as a unidimensional measure, with one global factor explaining most of the variance in the items. In Study 2, using a sample of male ice hockey players, the results indicated that the items in the CCBS are represented by both a general factor and specific factors, but the subscales differ with regard to the amount of variance in the items accounted for by the general and specific factors. These results add further insight into the psychometric properties of these two measures and the dimensionality of these two constructs.

  16. PENINGKATAN KEMAMPUAN PEMECAHAN MASALAH DAN PENGEMBANGAN KARAKTER PADA SISWA KELAS VII MELALUI MODEL PBL BERBANTUAN SCAFFOLDING

    Directory of Open Access Journals (Sweden)

    Novy Kris Zaini

    2016-04-01

    Full Text Available Tujuan penelitian ini adalah untuk mengetahui (1 apakah kemampuan pemecahan masalah matematika peserta didik yang diajar dengan model PBL berbantuan scaffolding pada materi pokok segiempat kelas VII dapat mencapai KKM yang ditetapkan, (2 apakah pembelajaran matematika dengan model PBL berbantuan scaffolding pada materi pokok segiempat kelas VII dapat meningkatkan kemampuan pemecahan masalah peserta didik pilihan, (3 apakah pembelajaran matematika dengan model PBL berbantuan scaffolding pada materi pokok segiempat kelas VII dapat meningkatkan karakter rasa ingin tahu peserta didik pilihan. Desain penelitian ini adalah concurrent triangulation (campuran kuatitatif dan kualitatif secara seimbang, menggabungkan antara metode kuantitatif dan metode kualitatif untuk digunakan secara bersama-sama dalam suatu kegiatan penelitian, sehingga diperoleh data yang lebih komprehensif, valid, reliabel dan obyektif. Penentuan sumber data dalam penelitian ini menggunakan teknik triangulasi, yaitu menggabungkan dari berbagai teknik pengumpulan data dan sumber data yang telah ada. Data diperoleh dengan observasi, wawancara, dan dokumentasi yang kemudian dianalisis menggunakan analisis kualitatif, sedangkan tes dan observasi dianalisis menggunakan analisis kuantitatif dan analisis gain untuk mengukur peningkatan. Analisis kualitatif menunjukkan karakter rasa ingin tahu dan kemampuan pemecahan masalah peserta didik meningkat, serta kemampuan pemecahan masalah peserta didik mencapai KKM melalui model pembelajaran PBL

  17. Telephone Coaching in Dialectical Behavior Therapy: A Decision-Tree Model for Managing Inter-Session Contact with Clients

    Science.gov (United States)

    Ben-Porath, Denise D.; Koons, Cedar R.

    2005-01-01

    Several studies have indicated that telephone coaching can play an important role in psychological intervention (Beebe, 2001; Burgess & Chalder, 2001; Meyersberg, 1985). Less well understood, however, is the role of telephone coaching with severe, complex, multiproblem clients, such as those diagnosed with borderline personality disorder.…

  18. Relationship between Systems Coaching and Problem-Solving Implementation Fidelity in a Response-to-Intervention Model

    Science.gov (United States)

    March, Amanda L.; Castillo, Jose M.; Batsche, George M.; Kincaid, Donald

    2016-01-01

    The literature on RTI has indicated that professional development and coaching are critical to facilitating problem-solving implementation with fidelity. This study examined the extent to which systems coaching related to the fidelity of problem-solving implementation in 31 schools from six districts. Schools participated in three years of a…

  19. Integrative health coaching: an organizational case study.

    Science.gov (United States)

    Wolever, Ruth Q; Caldwell, Karen L; Wakefield, Jessica P; Little, Kerry J; Gresko, Jeanne; Shaw, Andrea; Duda, Linda V; Kosey, Julie M; Gaudet, Tracy

    2011-01-01

    The aim of this study was to describe integrative health (IH) coaching as developed in three different interventions offered through a major medical center, as a step toward further defining the field of health coaching. An organizational case study was conducted with document analysis and interviews. Interviewees were the first six IH coaches at Duke Integrative Medicine who provided 360 clients with individual and/or group coaching (two to 28 sessions) in a randomized clinical study and two work-site wellness programs. Qualitative analysis using the constant comparative method was conducted. Integrative health coaching is characterized by a process of self-discovery that informs goal setting and builds internal motivation by linking clients' goals to their values and sense of purpose. Time, commitment, and motivation are necessary in the IH coaching process. The underpinnings of IH coaching are distinct from the medical model, and the process is distinct from health education, executive coaching, and psychotherapy. Integrative health coaching fits well with the assumptions of integrative medicine and has a role in supporting behavior change. Copyright © 2011. Published by Elsevier Inc.

  20. Coaching doctoral students

    DEFF Research Database (Denmark)

    Godskesen, Mirjam Irene; Kobayashi, Sofie

    2016-01-01

    In this paper we focus on individual coaching carried out by an external coach as a new pedagogical element that can impact doctoral students’ sense of progress in doctoral education. The study used a mixed methods approach in that we draw on quantitative and qualitative data from the evaluation...... of a project on coaching doctoral students. We explore how coaching can contribute to the doctoral students’ development of a broad set of personal competences and suggest that coaching could work as a means to engender self-management and improve relational competences. The analysis of the participants’ self......-reported gains from coaching show that doctoral students experience coaching as an effective method to support the doctoral study process. This study also provides preliminary empirical evidence that coaching of doctoral students can facilitate the doctoral study process so that the doctoral students experience...

  1. Osteoinduction of biphasic calcium phosphate scaffolds in a nude mouse model.

    Science.gov (United States)

    Miramond, T; Corre, P; Borget, P; Moreau, F; Guicheux, J; Daculsi, G; Weiss, P

    2014-10-01

    Bioceramics combined with isolated stem cells, or with total bone marrow, constitute the main strategies under consideration in the field of bone tissue engineering. In the present preclinical study, two biphasic calcium phosphate scaffolds currently on the market, MBCP® and MBCP+®, with different hydroxyapatite/β-tricalcium phosphate ratio, were implanted ectopically in a nude mouse model. These scaffolds were supplemented either with human mesenchymal stromal cells, or with human total bone marrow, or rat total bone marrow. Biomaterials alone were found to have potentially low, but non-zero, osteoinductive properties, while biomaterials associated with total bone marrow consistently improved osteoinduction in comparison with high concentrations of isolated human stromal cells. © The Author(s) 2014 Reprints and permissions: sagepub.co.uk/journalsPermissions.nav.

  2. Urethral tissue regeneration using collagen scaffold modified with collagen binding VEGF in a beagle model.

    Science.gov (United States)

    Jia, Weisheng; Tang, He; Wu, Jianjian; Hou, Xianglin; Chen, Bing; Chen, Wei; Zhao, Yannan; Shi, Chunying; Zhou, Feng; Yu, Wei; Huang, Shengquan; Ye, Gang; Dai, Jianwu

    2015-11-01

    Extensive urethral defects have a serious impact on quality of life, and treatment is challenging. A shortage of material for reconstruction is a key limitation. Improving the properties of biomaterials and making them suitable for urethral reconstruction will be helpful. Previously, we constructed a fusion protein, collagen-binding VEGF (CBD-VEGF), which can bind to collagen scaffold, stimulate cell proliferation, and promote angiogenesis and tissue regeneration. We proposed that CBD-VEGF could improve the performance of collagen in reconstruction of extensive urethral defects. Our results showed that collagen scaffolds modified with CBD-VEGF could promote urethral tissue regeneration and improve the function of the neo-urethra in a beagle extensive urethral defect model. Thus, modifying biomaterials with bioactive factors provides an alternative strategy for the production of suitable biomaterials for urethral reconstruction. Copyright © 2015 Elsevier Ltd. All rights reserved.

  3. Application of layered poly (L-lactic acid cell free scaffold in a rabbit rotator cuff defect model

    Directory of Open Access Journals (Sweden)

    Inui Atsuyuki

    2011-12-01

    Full Text Available Abstract Background This study evaluated the application of a layered cell free poly (L-lactic acid (PLLA scaffold to regenerate an infraspinatus tendon defect in a rabbit model. We hypothesized that PLLA scaffold without cultivated cells would lead to regeneration of tissue with mechanical properties similar to reattached infraspinatus without tendon defects. Methods Layered PLLA fabric with a smooth surface on one side and a pile-finished surface on the other side was used. Novel form of layered PLLA scaffold was created by superimposing 2 PLLA fabrics. Defects of the infraspinatus tendon were created in 32 rabbits and the PLLA scaffolds were transplanted, four rabbits were used as normal control. Contralateral infraspinatus tendons were reattached to humeral head without scaffold implantation. Histological and mechanical evaluations were performed at 4, 8, and 16 weeks after operation. Results At 4 weeks postoperatively, cell migration was observed in the interstice of the PLLA fibers. Regenerated tissue was directly connected to the bone composed mainly of type III collagen, at 16 weeks postoperatively. The ultimate failure load increased in a time-dependent manner and no statistical difference was seen between normal infraspinatus tendon and scaffold group at 8 and 16 weeks postoperatively. There were no differences between scaffold group and reattach group at each time of point. The stiffness did not improve significantly in both groups. Conclusions A novel form of layered PLLA scaffold has the potential to induce cell migration into the scaffold and to bridge the tendon defect with mechanical properties similar to reattached infraspinatus tendon model.

  4. The choice of boundary conditions and mesh for scaffolding FEM model on the basis of natural vibrations measurements

    Science.gov (United States)

    Cyniak, Patrycja; Błazik-Borowa, Ewa; Szer, Jacek; Lipecki, Tomasz; Szer, Iwona

    2018-01-01

    Scaffolding is a specific construction with high susceptibility to low frequency vibrations. The numerical model of scaffolding presented in this paper contains real imperfections received from geodetic measurements of real construction. Boundary conditions were verified on the basis of measured free vibrations. A simulation of a man walking on penultimate working level as a dynamic load variable in time was made for verified model. The paper presents procedure for a choice of selected parameters of the scaffolding FEM model. The main aim of analysis is the best projection of the real construction and correct modeling of worker walking on the scaffolding. Different boundary conditions are considered, because of their impact on construction vibrations. Natural vibrations obtained from FEM calculations are compared with free vibrations measured during in-situ tests. Structure accelerations caused by walking human are then considered in this paper. Methodology of creating numerical models of scaffoldings and analysis of dynamic effects during human walking are starting points for further considerations about dynamic loads acting on such structures and effects of these loads to construction and workers, whose workplaces are situated on the scaffolding.

  5. Negative Outcomes of Poly(l-Lactic Acid) Fiber-Reinforced Scaffolds in an Ovine Total Meniscus Replacement Model.

    Science.gov (United States)

    Patel, Jay M; Merriam, Aaron R; Kohn, Joachim; Gatt, Charles J; Dunn, Michael G

    2016-09-01

    Our objective was to test the efficacy of collagen-hyaluronan scaffolds reinforced with poly(l-lactic acid) (PLLA) fibers in an ovine total meniscus replacement model. Scaffolds were implanted into 9 sheep (n = 1 at 8 weeks, n = 2 at 16 weeks, n = 3 at both 24, 32 weeks) following total medial meniscectomy. From 16 weeks on, explants were characterized by confined compression creep, histological, and biochemical analyses. Articular surfaces were observed macroscopically and damage was ranked histologically using the Mankin score. At sacrifice, three of the nine PLLA scaffolds had completely ruptured, and the intact scaffolds experienced progressive shape changes and severe narrowing in the body region at 16, 24, and 32 weeks. Aggregate compressive modulus and permeability did not improve with time. Histological and biochemical analyses showed significantly less extracellular matrix and less matrix organization compared to native tissue. Osteophytes, bone erosion, and cartilage damage were observed, increasing with time postimplantation. A buildup of lactic acid and/or the rapid loss of scaffold mechanical integrity due to PLLA degradation are probable causes for the joint abnormalities observed in this study. These results are in sharp contrast to those of our previous successful total meniscus replacement studies using polyarylate [p(DTD DD)] fiber-reinforced scaffolds. This suggests that PLLA fiber as produced in this study cannot be used as reinforcement for a meniscus replacement scaffold.

  6. Leadership Coaching That Transforms

    Science.gov (United States)

    Aguilar, Elena

    2017-01-01

    Leading a school can be a lonely, challenging job, Elena Aguilar has found in her years coaching principals. Aguilar describes how coaching approach she's developed--transformational coaching--helps principals get three things most of them need: a neutral person they can talk with confidentially, job-embedded professional development, and a safe…

  7. Modeling mechanical signals on the surface of µCT and CAD based rapid prototype scaffold models to predict (early stage) tissue development

    NARCIS (Netherlands)

    Hendrikson, W.J.; van Blitterswijk, Clemens; Verdonschot, Nicolaas Jacobus Joseph; Moroni, Lorenzo; Rouwkema, Jeroen

    2014-01-01

    In the field of tissue engineering, mechano-regulation theories have been applied to help predict tissue development in tissue engineering scaffolds in the past. For this, finite element models (FEMs) were used to predict the distribution of strains within a scaffold. However, the strains reported

  8. Modeling mechanical signals on the surface of microCT and CAD based rapid prototype scaffold models to predict (early stage) tissue development

    NARCIS (Netherlands)

    Hendrikson, W.J.; Blitterswijk, C.A. van; Verdonschot, N.J.; Moroni, L.; Rouwkema, J.

    2014-01-01

    In the field of tissue engineering, mechano-regulation theories have been applied to help predict tissue development in tissue engineering scaffolds in the past. For this, finite element models (FEMs) were used to predict the distribution of strains within a scaffold. However, the strains reported

  9. In Vivo Bone Formation Within Engineered Hydroxyapatite Scaffolds in a Sheep Model.

    Science.gov (United States)

    Lovati, A B; Lopa, S; Recordati, C; Talò, G; Turrisi, C; Bottagisio, M; Losa, M; Scanziani, E; Moretti, M

    2016-08-01

    Large bone defects still represent a major burden in orthopedics, requiring bone-graft implantation to promote the bone repair. Along with autografts that currently represent the gold standard for complicated fracture repair, the bone tissue engineering offers a promising alternative strategy combining bone-graft substitutes with osteoprogenitor cells able to support the bone tissue ingrowth within the implant. Hence, the optimization of cell loading and distribution within osteoconductive scaffolds is mandatory to support a successful bone formation within the scaffold pores. With this purpose, we engineered constructs by seeding and culturing autologous, osteodifferentiated bone marrow mesenchymal stem cells within hydroxyapatite (HA)-based grafts by means of a perfusion bioreactor to enhance the in vivo implant-bone osseointegration in an ovine model. Specifically, we compared the engineered constructs in two different anatomical bone sites, tibia, and femur, compared with cell-free or static cell-loaded scaffolds. After 2 and 4 months, the bone formation and the scaffold osseointegration were assessed by micro-CT and histological analyses. The results demonstrated the capability of the acellular HA-based grafts to determine an implant-bone osseointegration similar to that of statically or dynamically cultured grafts. Our study demonstrated that the tibia is characterized by a lower bone repair capability compared to femur, in which the contribution of transplanted cells is not crucial to enhance the bone-implant osseointegration. Indeed, only in tibia, the dynamic cell-loaded implants performed slightly better than the cell-free or static cell-loaded grafts, indicating that this is a valid approach to sustain the bone deposition and osseointegration in disadvantaged anatomical sites.

  10. Pedagogical Experience of Teaching Financial Coaching

    Directory of Open Access Journals (Sweden)

    Lucy M. Delgadillo

    2015-12-01

    Full Text Available This study reports on the pedagogical experience of teaching a financial coaching course to personal and family finance undergraduate students at XXXX State University. The paper describes the conceptualization of the class, including theoretical frameworks, ethical considerations, practitioner’s models, learning objectives, and competencies. The assessment of the course provided data used by the instructor to refine and adjust future course content and assignments. Quantitative data was collected in pre- and post-tests assessments. The quantitative assessment shows statistically significant gains in specific coaching skills and competencies. The qualitative assessment indicates that, at the end of the course, students had better understanding of the coaching code of ethics and better communication and listening skills. The peer-to-peer coaching exercise was apparently very fear-provoking but valuable for the students. Challenges for teaching financial coaching by future instructors are discussed in the last section

  11. Coaching as Professional Learning: Guidance for Implementing Effective Coaching Systems

    Science.gov (United States)

    Vermont Agency of Education, 2016

    2016-01-01

    To build collective capacity within organizations, schools and districts across the world have implemented coaching as an effective method for systemic reform. Vermont in particular has a wide variety of coaches, including instructional coaches and systems coaches, as well as a variety of interpretations of the coaching practice. Many schools…

  12. Platelet autologous growth factors decrease the osteochondral regeneration capability of a collagen-hydroxyapatite scaffold in a sheep model

    Directory of Open Access Journals (Sweden)

    Giavaresi Gianluca

    2010-09-01

    Full Text Available Abstract Background Current research aims to develop innovative approaches to improve chondral and osteochondral regeneration. The objective of this study was to investigate the regenerative potential of platelet-rich plasma (PRP to enhance the repair process of a collagen-hydroxyapatite scaffold in osteochondral defects in a sheep model. Methods PRP was added to a new, multi-layer gradient, nanocomposite scaffold that was obtained by nucleating collagen fibrils with hydroxyapatite nanoparticles. Twenty-four osteochondral lesions were created in sheep femoral condyles. The animals were randomised to three treatment groups: scaffold, scaffold loaded with autologous PRP, and empty defect (control. The animals were sacrificed and evaluated six months after surgery. Results Gross evaluation and histology of the specimens showed good integration of the chondral surface in both treatment groups. Significantly better bone regeneration and cartilage surface reconstruction were observed in the group treated with the scaffold alone. Incomplete bone regeneration and irregular cartilage surface integration were observed in the group treated with the scaffold where PRP was added. In the control group, no bone and cartilage defect healing occurred; defects were filled with fibrous tissue. Quantitative macroscopic and histological score evaluations confirmed the qualitative trends observed. Conclusions The hydroxyapatite-collagen scaffold enhanced osteochondral lesion repair, but the combination with platelet growth factors did not have an additive effect; on the contrary, PRP administration had a negative effect on the results obtained by disturbing the regenerative process. In the scaffold + PRP group, highly amorphous cartilaginous repair tissue and poorly spatially organised underlying bone tissue were found.

  13. Effects of the teach-model-coach-review instructional approach on caregiver use of language support strategies and children's expressive language skills.

    Science.gov (United States)

    Roberts, Megan Y; Kaiser, Ann P; Wolfe, Cathy E; Bryant, Julie D; Spidalieri, Alexandria M

    2014-10-01

    In this study, the authors examined the effects of the Teach-Model-Coach-Review instructional approach on caregivers' use of four enhanced milieu teaching (EMT) language support strategies and on their children's use of expressive language. Four caregiver-child dyads participated in a single-subject, multiple-baseline study. Children were between 24 and 42 months of age and had language impairment. Interventionists used the Teach-Model-Coach-Review instructional approach to teach caregivers to use matched turns, expansions, time delays, and milieu teaching prompts during 24 individualized clinic sessions. Caregiver use of each EMT language support strategy and child use of communication targets were the dependent variables. The caregivers demonstrated increases in their use of each EMT language support strategy after instruction. Generalization and maintenance of strategy use to the home was limited, indicating that teaching across routines is necessary to achieve maximal outcomes. All children demonstrated gains in their use of communication targets and in their performance on norm-referenced measures of language. The results indicate that the Teach-Model-Coach-Review instructional approach resulted in increased use of EMT language support strategies by caregivers. Caregiver use of these strategies was associated with positive changes in child language skills.

  14. Third Generation Coaching

    DEFF Research Database (Denmark)

    Stelter, Reinhard

    2016-01-01

    German abstract: Auf der Grundlage aktueller Sozialforschung, neuer Lerntheorien und Diskurse der Personalführung entfaltet sich ein neues Verständnis von Coaching und Coaching-Psychologie. In der dritten Generation wird Coaching aus gesellschaftlicher Perspektive betrachtet. Wenn sich die...... Gesellschaft verändert, muss sich auch Coaching als spezifische Form der Interaktion weiterentwickeln: Die Mission des Third Generation Coaching ist die Entwicklung von Nachhaltigkeit in der Anwendung, indem sich der Dialog stärker auf Werte und Sinn-Schaffen ausrichtet, weg vom einengenden Zielfokus hin zur...... Betonung von Aspirationen, Leidenschaften und Werten. In diesem Sinne trägt Third Generation Coaching zur Entfaltung und Weiterentwicklung persönlicher Identität bei – ein entscheidender Faktor für die menschliche Entwicklung in unserer Zeit. Auf der Basis kollaborativer Zusammenarbeit dieses Ansatzes...

  15. Impact of a Teacher-as-Coach Model: Improving Paraprofessionals Fidelity of Implementation of Discrete Trial Training for Students with Moderate-to-Severe Developmental Disabilities.

    Science.gov (United States)

    Mason, Rose A; Schnitz, Alana G; Wills, Howard P; Rosenbloom, Raia; Kamps, Debra M; Bast, Darcey

    2017-06-01

    Ensuring educational progress for students with moderate-to-severe developmental disabilities requires exposure to well executed evidence-based practices. This necessitates that the special education workforce, including paraprofessionals, be well-trained. Yet evidence regarding effective training mechanisms for paraprofessionals is limited. A multiple baseline design across five teachers was used to evaluate the impact of online instructional modules and a Practice-Based Coaching (PBC) model with teacher-as-coach on their paraprofessionals' fidelity of discrete trial training (DTT). Implementation of the instructional modules yielded little to no change in paraprofessionals' DTT fidelity, however, a clear functional relation between PBC and improvement in paraprofessionals' fidelity of implementation of DTT was demonstrated. Implications for future research and practice are discussed.

  16. Constructive remodeling of biologic scaffolds is dependent on early exposure to physiologic bladder filling in a canine partial cystectomy model.

    Science.gov (United States)

    Boruch, Alan V; Nieponice, Alejandro; Qureshi, Irfan R; Gilbert, Thomas W; Badylak, Stephen F

    2010-06-15

    Biologic scaffolds composed of extracellular matrix (ECM) have been used to facilitate the constructive remodeling of several tissue types. Previous studies suggest that the ECM scaffold remodeling process is dependent on microenvironmental factors, including tissue-specific biomechanical loading. The objective of the present study was to evaluate the effects of long-term catheterization (LTC), with its associated inhibition of bladder filling and physiologic biomechanical loading, on ECM scaffold remodeling following partial cystectomy in a canine model. Reconstruction of the partial cystectomy site was performed using ECM scaffolds prepared from porcine small intestinal submucosa (SIS) or porcine urinary bladder matrix (UBM). Animals were randomly assigned to either a long-term catheterization (LTC) group (n=5, catheterized 28 d) or a short-term catheterization group (STC, n=5, catheterized 24 h), and scaffold remodeling was assessed by histologic methods at 4 and 12 wk postoperatively. By 4 wk, animals in the STC group showed a well-developed and highly differentiated urothelium, a robust vascularization network, abundant smooth muscle actin (SMA), and smooth muscle myosin heavy chain (smMHC) expressing spindle-shaped cells, and many neuronal processes associated with newly formed arterioles. In contrast, at 4 wk the scaffolds in LTC animals were not epithelialized, and did not express neuronal markers. The scaffolds in the LTC group developed a dense granulation tissue containing SMA+, smMHC-, spindle-shaped cells that were morphologically and phenotypically consistent with myofibroblasts, but not smooth muscle cells. By 12 wk postoperatively, the ECM scaffolds in the STC animals showed a constructive remodeling response, with a differentiated urothelium and islands of smooth muscle cells within the remodeled scaffold. In contrast, at 12 wk the scaffolds in LTC animals had a remodeling response more consistent with fibrosis even though catheters had been

  17. Biomimetic Multispiked Connecting Ti-Alloy Scaffold Prototype for Entirely-Cementless Resurfacing Arthroplasty Endoprostheses—Exemplary Results of Implantation of the Ca-P Surface-Modified Scaffold Prototypes in Animal Model and Osteoblast Culture Evaluation

    Directory of Open Access Journals (Sweden)

    Ryszard Uklejewski

    2016-06-01

    Full Text Available We present here—designed, manufactured, and tested by our research team—the Ti-alloy prototype of the multispiked connecting scaffold (MSC-Scaffold interfacing the components of resurfacing arthroplasty (RA endoprostheses with bone. The spikes of the MSC-Scaffold prototype mimic the interdigitations of the articular subchondral bone, which is the natural biostructure interfacing the articular cartilage with the periarticular trabecular bone. To enhance the osteoinduction/osteointegration potential of the MSC-Scaffold, the attempts to modify its bone contacting surfaces by the process of electrochemical cathodic deposition of Ca-P was performed with further immersion of the MSC-Scaffold prototypes in SBF in order to transform the amorphous calcium-phosphate coating in hydroxyapatite-like (HA-like coating. The pilot experimental study of biointegration of unmodified and Ca-P surface-modified MSC-Scaffold prototypes was conducted in an animal model (swine and in osteoblast cell culture. On the basis of a microscope-histological method the biointegration was proven by the presence of trabeculae in the interspike spaces of the MSC-Scaffold prototype on longitudinal and cross-sections of bone-implant specimens. The percentage of trabeculae in the area between the spikes of specimen containing Ca-P surface modified scaffold prototype observed in microCT reconstructions of the explanted joints was visibly higher than in the case of unmodified MSC-Scaffold prototypes. Significantly higher Alkaline Phosphatase (ALP activity and the cellular proliferation in the case of Ca-P-modified MSC-Scaffold pre-prototypes, in comparison with unmodified pre-prototypes, was found in osteoblast cell cultures. The obtained results of experimental implantation in an animal model and osteoblast cell culture evaluations of Ca-P surface-modified and non-modified biomimetic MSC-Scaffold prototypes for biomimetic entirely-cementless RA endoprostheses indicate the

  18. Biomimetic Multispiked Connecting Ti-Alloy Scaffold Prototype for Entirely-Cementless Resurfacing Arthroplasty Endoprostheses-Exemplary Results of Implantation of the Ca-P Surface-Modified Scaffold Prototypes in Animal Model and Osteoblast Culture Evaluation.

    Science.gov (United States)

    Uklejewski, Ryszard; Rogala, Piotr; Winiecki, Mariusz; Tokłowicz, Renata; Ruszkowski, Piotr; Wołuń-Cholewa, Maria

    2016-06-29

    We present here-designed, manufactured, and tested by our research team-the Ti-alloy prototype of the multispiked connecting scaffold (MSC-Scaffold) interfacing the components of resurfacing arthroplasty (RA) endoprostheses with bone. The spikes of the MSC-Scaffold prototype mimic the interdigitations of the articular subchondral bone, which is the natural biostructure interfacing the articular cartilage with the periarticular trabecular bone. To enhance the osteoinduction/osteointegration potential of the MSC-Scaffold, the attempts to modify its bone contacting surfaces by the process of electrochemical cathodic deposition of Ca-P was performed with further immersion of the MSC-Scaffold prototypes in SBF in order to transform the amorphous calcium-phosphate coating in hydroxyapatite-like (HA-like) coating. The pilot experimental study of biointegration of unmodified and Ca-P surface-modified MSC-Scaffold prototypes was conducted in an animal model (swine) and in osteoblast cell culture. On the basis of a microscope-histological method the biointegration was proven by the presence of trabeculae in the interspike spaces of the MSC-Scaffold prototype on longitudinal and cross-sections of bone-implant specimens. The percentage of trabeculae in the area between the spikes of specimen containing Ca-P surface modified scaffold prototype observed in microCT reconstructions of the explanted joints was visibly higher than in the case of unmodified MSC-Scaffold prototypes. Significantly higher Alkaline Phosphatase (ALP) activity and the cellular proliferation in the case of Ca-P-modified MSC-Scaffold pre-prototypes, in comparison with unmodified pre-prototypes, was found in osteoblast cell cultures. The obtained results of experimental implantation in an animal model and osteoblast cell culture evaluations of Ca-P surface-modified and non-modified biomimetic MSC-Scaffold prototypes for biomimetic entirely-cementless RA endoprostheses indicate the enhancement of the

  19. Biomimetic Multispiked Connecting Ti-Alloy Scaffold Prototype for Entirely-Cementless Resurfacing Arthroplasty Endoprostheses—Exemplary Results of Implantation of the Ca-P Surface-Modified Scaffold Prototypes in Animal Model and Osteoblast Culture Evaluation

    Science.gov (United States)

    Uklejewski, Ryszard; Rogala, Piotr; Winiecki, Mariusz; Tokłowicz, Renata; Ruszkowski, Piotr; Wołuń-Cholewa, Maria

    2016-01-01

    We present here—designed, manufactured, and tested by our research team—the Ti-alloy prototype of the multispiked connecting scaffold (MSC-Scaffold) interfacing the components of resurfacing arthroplasty (RA) endoprostheses with bone. The spikes of the MSC-Scaffold prototype mimic the interdigitations of the articular subchondral bone, which is the natural biostructure interfacing the articular cartilage with the periarticular trabecular bone. To enhance the osteoinduction/osteointegration potential of the MSC-Scaffold, the attempts to modify its bone contacting surfaces by the process of electrochemical cathodic deposition of Ca-P was performed with further immersion of the MSC-Scaffold prototypes in SBF in order to transform the amorphous calcium-phosphate coating in hydroxyapatite-like (HA-like) coating. The pilot experimental study of biointegration of unmodified and Ca-P surface-modified MSC-Scaffold prototypes was conducted in an animal model (swine) and in osteoblast cell culture. On the basis of a microscope-histological method the biointegration was proven by the presence of trabeculae in the interspike spaces of the MSC-Scaffold prototype on longitudinal and cross-sections of bone-implant specimens. The percentage of trabeculae in the area between the spikes of specimen containing Ca-P surface modified scaffold prototype observed in microCT reconstructions of the explanted joints was visibly higher than in the case of unmodified MSC-Scaffold prototypes. Significantly higher Alkaline Phosphatase (ALP) activity and the cellular proliferation in the case of Ca-P-modified MSC-Scaffold pre-prototypes, in comparison with unmodified pre-prototypes, was found in osteoblast cell cultures. The obtained results of experimental implantation in an animal model and osteoblast cell culture evaluations of Ca-P surface-modified and non-modified biomimetic MSC-Scaffold prototypes for biomimetic entirely-cementless RA endoprostheses indicate the enhancement of the

  20. Tyrosine-derived polycarbonate scaffolds for bone regeneration in a rabbit radius critical-size defect model

    International Nuclear Information System (INIS)

    Kim, Jinku; McBride, Sean; Donovan, Amy; Hollinger, Jeffrey O; Darr, Aniq; Magno, Maria Hanshella R

    2015-01-01

    The aim of the study was to determine bone regeneration in a rabbit radius critical-size defect (CSD) model using a specific polymer composition (E1001(1k)) from a library of tyrosine-derived polycarbonate scaffolds coated with a calcium phosphate (CP) formulation (E1001(1k) + CP) supplemented with recombinant human bone morphogenetic protein-2 (rhBMP-2). Specific doses of rhBMP-2 (0, 17, and 35 μg/scaffold) were used. E1001(1k) + CP scaffolds were implanted in unilateral segmental defects (15 mm length) in the radial diaphyses of New Zealand White rabbits. At 4 and 8 weeks post-implantation, bone regeneration was determined using micro-computed tomography (µCT), histology, and histomorphometry. The quantitative outcome data suggest that E1001(1k) + CP scaffolds with rhBMP-2 were biocompatible and promoted bone regeneration in segmental bone defects. Histological examination of the implant sites showed that scaffolds made of E1001(1k) + CP did not elicit adverse cellular or tissue responses throughout test periods up to 8 weeks. Noteworthy is that the incorporation of a very small amount of rhBMP-2 into the scaffolds (as low as 17 μg/defect site) promoted significant bone regeneration compared to scaffolds consisting of E1001(1k) + CP alone. This finding indicates that E1001(1k) + CP may be an effective platform for bone regeneration in a critical size rabbit radius segmental defect model, requiring only a minimal dose of rhBMP-2. (paper)

  1. Strontium Hydroxyapatite scaffolds engineered with stem cells aid osteointegration and osteogenesis in osteoporotic sheep model.

    Science.gov (United States)

    Chandran, Sunitha; Shenoy, Sachin J; Babu S, Suresh; P Nair, Renjith; H K, Varma; John, Annie

    2018-03-01

    Osteoporotic fracture healing is an orthopaedic challenge due to excessive bone resorption and impaired osteogenesis. Majority of current treatment strategies focus on regulating bone resorption and the potential application of Mesenchymal Stem Cells (MSCs) in promoting osteogenesis has not been explored much. Furthermore, the present study has put forth a novel approach, wherein the synergistic action of Strontium (Sr) and MSCs in a single implant may facilitate osteoporotic bone healing. Strontium Hydroxyapatite (SrHA) synthesized by wet precipitation was fabricated into tissue engineered Strontium incorporated Hydroxyapatite (cSrHA) using sheep adipose tissue derived MSCs (ADMSCs). Porosity, radiopacity and cytocompatibility of SrHA scaffolds were found appropriate for orthopaedic applications. cSrHA scaffolds exhibited an in vitro Alkaline Phosphatase activity of 20 μmol pnp/30 min comparable to that of Hydroxyapatite (HA) - control scaffold, proving its osteogenic efficacy. Implantation studies in sheep osteoporotic model depicted enhanced osteogenic ability with mature lamellar bone formation in cSrHA implanted group, compared to bare HA, SrHA and tissue engineered HA implanted groups. Histomorphometry data substantiated improved osteogenesis on par with material resorption, as cSrHA implanted group exhibited highest regeneration ratio of 0.38 ± 0.05. Density histograms from micro CT further signified the enhanced osteointegrative ability of cSrHA implants. Results of the study depicted the therapeutic potential of cSrHA in osteoporotic bone healing and proposes the use of allogenic ADMSCs for fabricating "Off the Shelf Tissue Engineered Products". Copyright © 2017 Elsevier B.V. All rights reserved.

  2. Exploring the Effect of Embedded Scaffolding Within Curricular Tasks on Third-Grade Students' Model-Based Explanations about Hydrologic Cycling

    Science.gov (United States)

    Zangori, Laura; Forbes, Cory T.; Schwarz, Christina V.

    2015-10-01

    Opportunities to generate model-based explanations are crucial for elementary students, yet are rarely foregrounded in elementary science learning environments despite evidence that early learners can reason from models when provided with scaffolding. We used a quasi-experimental research design to investigate the comparative impact of a scaffold test condition consisting of embedded physical scaffolds within a curricular modeling task on third-grade (age 8-9) students' formulation of model-based explanations for the water cycle. This condition was contrasted to the control condition where third-grade students used a curricular modeling task with no embedded physical scaffolds. Students from each condition ( n scaffold = 60; n unscaffold = 56) generated models of the water cycle before and after completion of a 10-week water unit. Results from quantitative analyses suggest that students in the scaffolded condition represented and linked more subsurface water process sequences with surface water process sequences than did students in the unscaffolded condition. However, results of qualitative analyses indicate that students in the scaffolded condition were less likely to build upon these process sequences to generate model-based explanations and experienced difficulties understanding their models as abstracted representations rather than recreations of real-world phenomena. We conclude that embedded curricular scaffolds may support students to consider non-observable components of the water cycle but, alone, may be insufficient for generation of model-based explanations about subsurface water movement.

  3. A brief review of dispensing-based rapid prototyping techniques in tissue scaffold fabrication: role of modeling on scaffold properties prediction

    Energy Technology Data Exchange (ETDEWEB)

    Li, M G; Chen, X B [Department of Mechanical Engineering, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5A9 (Canada); Tian, X Y, E-mail: mil715@mail.usask.c [Division of Biomedical Engineering, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5A9 (Canada)

    2009-09-15

    Artificial scaffolds play vital roles in tissue engineering as they provide a supportive environment for cell attachment, proliferation and differentiation during tissue formation. Fabrication of tissue scaffolds is thus of fundamental importance for tissue engineering. Of the variety of scaffold fabrication techniques available, rapid prototyping (RP) methods have attracted a great deal of attention in recent years. This method can improve conventional scaffold fabrication by controlling scaffold microstructure, incorporating cells into scaffolds and regulating cell distribution. All of these contribute towards the ultimate goal of tissue engineering: functional tissues or organs. Dispensing is typically used in different RP techniques to implement the layer-by-layer fabrication process. This article reviews RP methods in tissue scaffold fabrication, with emphasis on dispensing-based techniques, and analyzes the effects of different process factors on fabrication performance, including flow rate, pore size and porosity, and mechanical cell damage that can occur in the bio-manufacturing process. (topical review)

  4. Antecedents of perceived coach autonomy supportive and controlling behaviors: coach psychological need satisfaction and well-being.

    Science.gov (United States)

    Stebbings, Juliette; Taylor, Ian M; Spray, Christopher M

    2011-04-01

    Within the self-determination theory (Deci & Ryan, 2000) framework, research has considered the consequences of coaches' autonomy supportive and controlling behaviors on various athlete outcomes (e.g., motivation and performance). The antecedents of such behaviors, however, have received little attention. Coaches (N = 443) from a variety of sports and competitive levels completed a self-report questionnaire to assess their psychological need satisfaction, well-being and perceived interpersonal behaviors toward their athletes. Structural equation modeling demonstrated that coaches' competence and autonomy need satisfaction positively predicted their levels of psychological well-being, as indexed by positive affect and subjective vitality. In turn, coaches' psychological well-being positively predicted their perceived autonomy support toward their athletes, and negatively predicted their perceived controlling behaviors. Overall, the results highlight the importance of coaching contexts that facilitate coaches' psychological need satisfaction and well-being, thereby increasing the likelihood of adaptive coach interpersonal behavior toward athletes.

  5. Histological evaluation of osteogenesis of 3D-printed poly-lactic-co-glycolic acid (PLGA) scaffolds in a rabbit model

    Energy Technology Data Exchange (ETDEWEB)

    Ge Zigang; Tian Xianfeng; Heng, Boon Chin; Fan, Victor; Yeo Jinfei; Cao Tong, E-mail: omscaot@nus.edu.s [Stem Cell Laboratory, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, National University of Singapore, 5 Lower Kent Ridge Road, Singapore 119074 (Singapore)

    2009-04-15

    Utilizing a suitable combination of lactide and glycolide in a copolymer would optimize the degradation rate of a scaffold upon implantation in situ. Moreover, 3D printing technology enables customizing the shape of the scaffold to biometric data from CT and MRI scans. A previous in vitro study has shown that novel 3D-printed poly-lactic-co-glycolic acid (PLGA) scaffolds had good biocompatibility and mechanical properties comparable with human cancellous bone, while they could support proliferation and osteogenic differentiation of osteoblasts. Based on the previous study, this study evaluated PLGA scaffolds for bone regeneration within a rabbit model. The scaffolds were implanted at two sites on the same animal, within the periosteum and within bi-cortical bone defects on the iliac crest. Subsequently, the efficacy of bone regeneration within the implanted scaffolds was evaluated at 4, 12 and 24 weeks post-surgery through histological analysis. In both the intra-periosteum and iliac bone defect models, the implanted scaffolds facilitated new bone tissue formation and maturation over the time course of 24 weeks, even though there was initially observed to be little tissue ingrowth within the scaffolds at 4 weeks post-surgery. Hence, the 3D-printed porous PLGA scaffolds investigated in this study displayed good biocompatibility and are osteoconductive in both the intra-periosteum and iliac bone defect models. (communication)

  6. Histological evaluation of osteogenesis of 3D-printed poly-lactic-co-glycolic acid (PLGA) scaffolds in a rabbit model

    International Nuclear Information System (INIS)

    Ge Zigang; Tian Xianfeng; Heng, Boon Chin; Fan, Victor; Yeo Jinfei; Cao Tong

    2009-01-01

    Utilizing a suitable combination of lactide and glycolide in a copolymer would optimize the degradation rate of a scaffold upon implantation in situ. Moreover, 3D printing technology enables customizing the shape of the scaffold to biometric data from CT and MRI scans. A previous in vitro study has shown that novel 3D-printed poly-lactic-co-glycolic acid (PLGA) scaffolds had good biocompatibility and mechanical properties comparable with human cancellous bone, while they could support proliferation and osteogenic differentiation of osteoblasts. Based on the previous study, this study evaluated PLGA scaffolds for bone regeneration within a rabbit model. The scaffolds were implanted at two sites on the same animal, within the periosteum and within bi-cortical bone defects on the iliac crest. Subsequently, the efficacy of bone regeneration within the implanted scaffolds was evaluated at 4, 12 and 24 weeks post-surgery through histological analysis. In both the intra-periosteum and iliac bone defect models, the implanted scaffolds facilitated new bone tissue formation and maturation over the time course of 24 weeks, even though there was initially observed to be little tissue ingrowth within the scaffolds at 4 weeks post-surgery. Hence, the 3D-printed porous PLGA scaffolds investigated in this study displayed good biocompatibility and are osteoconductive in both the intra-periosteum and iliac bone defect models. (communication)

  7. Quality Coaching Counts

    Science.gov (United States)

    Gould, Daniel

    2016-01-01

    Scholastic sport is a double-edged sword that can have positive or negative effects. Whether those effects are positive or negative depends on those who wield that sword--chiefly, the school's sports coach. While it is clear that coaches make a difference in ensuring that educational athletics lead to beneficial outcomes for student-athletes, a…

  8. Learning Developmental Coaching

    Science.gov (United States)

    Hunt, James M.; Weintraub, Joseph R.

    2004-01-01

    This article describes an educational intervention designed to promote the ability and willingness of MBA students to lead through coaching. MBA leadership students are trained to serve as coaches for undergraduate business students in a developmental assessment center. In this compelling context, their main source of influence is the ability to…

  9. Coaching Barometret 2009

    DEFF Research Database (Denmark)

    Wittrock, Christian; Didriksen, Vibeke; Stelter, Reinhard

    2009-01-01

    Coaching synes udbredt i danske organisationer og anvendes tilsyneladende i et utal af sammenhænge og på alle niveauer i organisationen. Blandt de adspurgte HR-ansvarlige er der generelt stor tilfredshed med coaching. Nærværende undersøgelse udgør et første overbliksbillede, som kan lede videre til...

  10. Coaching som styringsteknologi

    DEFF Research Database (Denmark)

    Pedersen, Anita Monnerup

    2010-01-01

    Coaching er ikke et neutralt værktøj, men producerer begrænsninger og muligheder for, hvad der kan tales om......Coaching er ikke et neutralt værktøj, men producerer begrænsninger og muligheder for, hvad der kan tales om...

  11. Coaching af dit studieliv

    DEFF Research Database (Denmark)

    Hansen, Rasmus Thorning

    2008-01-01

    En generel beskrivelse af de problemer specialestuderende sidder med og hvorledes coaching kan hjælpe med at (gen)skabe motivation og fokus......En generel beskrivelse af de problemer specialestuderende sidder med og hvorledes coaching kan hjælpe med at (gen)skabe motivation og fokus...

  12. Coaching i perspektiv

    DEFF Research Database (Denmark)

    Bogen er en grundbog, der sætter coaching ind i et større perspektiv og en bredere sammenhæng.......Bogen er en grundbog, der sætter coaching ind i et større perspektiv og en bredere sammenhæng....

  13. Coaching for viderekomne

    DEFF Research Database (Denmark)

    Skytte Gørtz, Kim Erik

    Bogen går i dybden med begrebet om coaching i en undersøgelse af, hvilken funktion og betydning filosofi kan have på og i coachprocessen......Bogen går i dybden med begrebet om coaching i en undersøgelse af, hvilken funktion og betydning filosofi kan have på og i coachprocessen...

  14. Integral transformational coaching

    NARCIS (Netherlands)

    Keizer, W.A.J.; Nandram, S.S.

    2009-01-01

    In Chap. 12, Keizer and Nandram present the concept of Integral Transformational Coaching based on the concept of Flow and its effects on work performance. Integral Transformational Coaching is a method that prevents and cures unhealthy stress and burnout. They draw on some tried and tested

  15. Mathematical Model of Growth Factor Driven Haptotaxis and Proliferation in a Tissue Engineering Scaffold

    KAUST Repository

    Pohlmeyer, J. V.

    2013-01-29

    Motivated by experimental work (Miller et al. in Biomaterials 27(10):2213-2221, 2006, 32(11):2775-2785, 2011) we investigate the effect of growth factor driven haptotaxis and proliferation in a perfusion tissue engineering bioreactor, in which nutrient-rich culture medium is perfused through a 2D porous scaffold impregnated with growth factor and seeded with cells. We model these processes on the timescale of cell proliferation, which typically is of the order of days. While a quantitative representation of these phenomena requires more experimental data than is yet available, qualitative agreement with preliminary experimental studies (Miller et al. in Biomaterials 27(10):2213-2221, 2006) is obtained, and appears promising. The ultimate goal of such modeling is to ascertain initial conditions (growth factor distribution, initial cell seeding, etc.) that will lead to a final desired outcome. © 2013 Society for Mathematical Biology.

  16. Building SWPBIS Capacity in Rural Schools through Building-Based Coaching: Early Findings from a District-Based Model

    Science.gov (United States)

    Cavanaugh, Brian; Swan, Meaghan

    2015-01-01

    School-wide Positive Behavioral Interventions and Supports (SWPBIS) is a widely used framework for supporting student social and academic behavior. Implementation science indicates that one effective way to implement and scale-up practices, such as SWPBIS, is through coaching; thus, there is a need for efficient, cost-effective methods to develop…

  17. A Model for Increasing Reform Implementation and Teacher Efficacy: Teacher Peer Coaching in Grades 3 and 6 Mathematics

    Science.gov (United States)

    Bruce, Catherine D.; Ross, John A.

    2008-01-01

    This study examined the effects of peer coaching on mathematics teaching practices and teacher beliefs about their capacity to have an impact on student learning. Twelve teachers in grades 3 and 6 participated in a brief but intensive professional development program over six months. The program focused on effective mathematics teaching strategies…

  18. Fabrication of BCP/Silica Scaffolds with Dual-Pore by Combining Fused Deposition Modeling and the Particle Leaching Method

    Energy Technology Data Exchange (ETDEWEB)

    Sa, Min-Woo; Kim, Jong Young [Andong National Univ., Andong (Korea, Republic of)

    2016-10-15

    In recent years, traditional scaffold fabrication techniques such as gas foaming, salt leaching, sponge replica, and freeze casting in tissue engineering have significantly limited sufficient mechanical property and cell interaction effect due to only random pores. Fused deposition modeling is the most apposite technology for fabricating the 3D scaffolds using the polymeric materials in tissue engineering application. In this study, 3D slurry mould was fabricated with a blended biphasic calcium phosphate (BCP)/Silica/Alginic acid sodium salt slurry in PCL mould and heated for two hours at 100 .deg. C to harden the blended slurry. 3D dual-pore BCP/Silica scaffold, composed of macro pores interconnected with micro pores, was successfully fabricated by sintering at furnace of 1100 .deg. C. Surface morphology and 3D shape of dual-pore BCP/Silica scaffold from scanning electron microscopy were observed. Also, the mechanical properties of 3D BCP/Silica scaffold, according to blending ratio of alginic acid sodium salt, were evaluated through compression test.

  19. Taming the wild west of business coaching training: An emerging conceptual framework

    Directory of Open Access Journals (Sweden)

    Jeanette Maritz

    2013-05-01

    Purpose: The purpose of this study was to explore and describe an emerging conceptual framework for business coach training programmes. Motivation of the study: An empirical void existed in coach training pedagogy with regard to business coach training programmes. Research design, approach and method: A qualitative, design was used to describe and understand the needs of business coaching stakeholders. Data were collected by means of focus groups, individual interviews and naïve sketches from business coach stakeholders such as the purchasers of coaching, coach educators, coachees (n = 30. Data were analysed using a thematic approach. Main findings: The findings were conceptualised and described in terms of the business coach educator as a role model and facilitator of learning, the business coach learner as an adult learner and the educational context. An appreciative environment was recommended. The procedure suggested a progressive broadening of knowledge and skills in an outcomes-based education model. The outcome envisioned a competent business coach who practises both ethically and competently. Practical/managerial implications: A key prerequisite for the future of business coach training programmes should be a coaching curriculum that is embedded in empirical research, with well-defined theoretical frameworks that guide coaching training and practice. Contribution/value-add: An emerging conceptual framework for business coach training programmes was described that could stimulate debate on what should matter in business coach training.

  20. Sources of Coaching Efficacy Information as Predictors of Coaching ...

    African Journals Online (AJOL)

    Sources of coaching efficacy information significantly ( P<.05) contributed to coaching efficacy of Nigerian coaches. Past experience, coaching preparation, prior success, perceived ability of athletes' skill and perceived social support of parents, school and community has provided information that will promote further studies ...

  1. Socialization of Coping with Community Violence: Influences of Caregiver Coaching, Modeling, and Family Context

    Science.gov (United States)

    Kliewer, Wendy; Parrish, Katie Adams; Taylor, Kelli W.; Jackson, Kate; Walker, Jean M.; Shivy, Victoria A.

    2006-01-01

    A socialization model of coping with community violence was tested in 101 African American adolescents (55% male, ages 9-13) and their maternal caregivers living in high-violence areas of a mid-sized, southeastern city. Participants completed interviews assessing caregiver coping, family context, and child adjustment. Caregiver-child dyads also…

  2. Modelling in Action. Scaffolding High School Students to Higher Levels of Autonomy: The School's Elevator and the Inverse Problem

    Science.gov (United States)

    Marmolejo Rivas, Eugenia

    2017-01-01

    In this paper, we focus our discussion on the strategy we follow to scaffold high school students to successfully build models of a real-life system. Our aim is for students to gradually achieve a higher level of autonomy and to use and further develop their mathematical knowledge. We present work students did when we asked them to build a model…

  3. Proposed model for biomineralization of novel nanohydroxyapatite/vertically aligned multiwalled carbon nanotube scaffolds

    Energy Technology Data Exchange (ETDEWEB)

    Brazil, Tayra Rodrigues; Neves, Marcele Florencio das; Marciano, Fernanda Roberta; Lobo, Anderson Oliveira, E-mail: aolobo@univap.br [Universidade do Vale do Paraiba (UniVap), Sao Jose dos Campos, SP (Brazil). Lab. de Nanotecnologia Biomedica; Regiani, Inacio [Instituto Tecnologico de Aeronautica (ITA), Sao Jose dos Campos, SP (Brazil)

    2013-11-01

    For the first time, the growth mechanism of biominerals formed on plate-like nanohydroxyapatite (nHAp) electrodeposited on superhydrophilic vertically aligned multi-walled carbon nanotubes (VAMWCNT-O{sub 2} ) is presented and a model for the specific growth preference is discussed. VAMWCNT-O{sub 2} films were obtained by microwave-assisted chemical vapor deposition method and functionalized by oxygen plasma. nHAp/VAMWCNT-O{sub 2} nanocomposites were fabricated with a direct electrodeposition of the thin nHAp films onto the VAMWCNT-O{sub 2} films. The biomineralized 'scaffolds' were obtained by soaking nHAp/VAMWCNT-O{sub 2} in simulated body fluid for 7, 14 and 21 days. Results show that the carboxyl functional groups directly attached onto VAMWCNT tips after oxygen plasma treatment were essential for the acceleration of the OH- formation and the deposition of plate-like nHAp crystals (author)

  4. Optimization of cell seeding in a 2D bio-scaffold system using computational models.

    Science.gov (United States)

    Ho, Nicholas; Chua, Matthew; Chui, Chee-Kong

    2017-05-01

    The cell expansion process is a crucial part of generating cells on a large-scale level in a bioreactor system. Hence, it is important to set operating conditions (e.g. initial cell seeding distribution, culture medium flow rate) to an optimal level. Often, the initial cell seeding distribution factor is neglected and/or overlooked in the design of a bioreactor using conventional seeding distribution methods. This paper proposes a novel seeding distribution method that aims to maximize cell growth and minimize production time/cost. The proposed method utilizes two computational models; the first model represents cell growth patterns whereas the second model determines optimal initial cell seeding positions for adherent cell expansions. Cell growth simulation from the first model demonstrates that the model can be a representation of various cell types with known probabilities. The second model involves a combination of combinatorial optimization, Monte Carlo and concepts of the first model, and is used to design a multi-layer 2D bio-scaffold system that increases cell production efficiency in bioreactor applications. Simulation results have shown that the recommended input configurations obtained from the proposed optimization method are the most optimal configurations. The results have also illustrated the effectiveness of the proposed optimization method. The potential of the proposed seeding distribution method as a useful tool to optimize the cell expansion process in modern bioreactor system applications is highlighted. Copyright © 2017 Elsevier Ltd. All rights reserved.

  5. CLASSIC APPROACH TO BUSINESS COACHING

    OpenAIRE

    Żukowska, Joanna

    2011-01-01

    The purpose of this paper is to present business coaching in a classical way. An overview of coaching definitions will be provided. Attention will be drawn to coaching components and varieties. Moreover, a brief description of coach competences and tools supporting their work will be offered. Joanna Żukowska

  6. COACH – EXPLORER - MANAGER

    Directory of Open Access Journals (Sweden)

    Đorđe Nićin

    2006-06-01

    Full Text Available Nowdays technologies are characterised by the expert specialists. In training technologies there are also coaches-experts for some sports. Aport from governing training technology, thus he performs manager’s work (planning, programing, accomplishing, controlling, correcting the coach also performs the work of an explorer, because the work of the coach is creative, creating, exploring and it is necessary to include innovation into training process, and innovations are nothing but rehearse of someting new, what is but scientific approach to the training. More the coach succeeds in controlling more factors which influence the sport achievement, he will be more successful. To be able to do all that, the coach must observe, follow, control and correct sportist’s reactions on exercises and loads all the time. The coach demonstrates his activity even through marketing, educational psychological, administrative- technical, nutritional and entire useful social role, so his work is interdisciplinary very complex, important, public, and thus it is a subject to critics. In order to be successful, a modern coach must be an exellent expert-specialist, but also an explorer and manager, and before all a creator of training technology

  7. Coaching Methodsfor SME's

    OpenAIRE

    Kovanen, Anne; Dunn, Katriina

    2010-01-01

    The idea for this thesis was given by the founder and owner of PJHA – Piha ja Hyvinvointi Akseli, Tuula Rahkonen. This company is in the process of changing the business idea and structure, and the owner is hoping to gain some fresh ideas through coaching. The aim of this thesis was to research different coaching methods and further implement a case study on PJHA using an evolutionary coaching approach. The main focus in the thesis was on the case study and different ways to explore the evol...

  8. Group Health Coaching: Strengths, Challenges, and Next Steps

    Science.gov (United States)

    Wolever, Ruth Q.; Manning, Linda; Elam, Roy; Moore, Margaret; Frates, Elizabeth Pegg; Duskey, Heidi; Anderson, Chelsea; Curtis, Rebecca L.; Masemer, Susan; Lawson, Karen

    2013-01-01

    There is great need for cost effective approaches to increase patient engagement and improve health and well-being. Health and wellness coaching has recently demonstrated great promise, but the majority of studies to date have focused on individual coaching (ie, one coach with one client). Newer initiatives are bringing a group coaching model from corporate leadership development and educational settings into the healthcare arena. A group approach potentially increases cost-effective access to a larger number of clients and brings the possible additional benefit of group support. This article highlights some of the group coaching approaches currently being conducted across the United States. The group coaching interventions included in this overview are offered by a variety of academic and private sector institutions, use both telephonic and in-person coaching, and are facilitated by professionally trained health and wellness coaches as well as trained peer coaches. Strengths and challenges experienced in these efforts are summarized, as are recommendations to address those challenges. A working definition of “Group Health and Wellness Coaching” is proposed, and important next steps for research and for the training of group coaches are presented. PMID:24416678

  9. Genetically engineered mesenchymal stromal cells produce IL-3 and TPO to further improve human scaffold-based xenograft models.

    Science.gov (United States)

    Carretta, Marco; de Boer, Bauke; Jaques, Jenny; Antonelli, Antonella; Horton, Sarah J; Yuan, Huipin; de Bruijn, Joost D; Groen, Richard W J; Vellenga, Edo; Schuringa, Jan Jacob

    2017-07-01

    Recently, NOD-SCID IL2Rγ -/- (NSG) mice were implanted with human mesenchymal stromal cells (MSCs) in the presence of ceramic scaffolds or Matrigel to mimic the human bone marrow (BM) microenvironment. This approach allowed the engraftment of leukemic samples that failed to engraft in NSG mice without humanized niches and resulted in a better preservation of leukemic stem cell self-renewal properties. To further improve our humanized niche scaffold model, we genetically engineered human MSCs to secrete human interleukin-3 (IL-3) and thrombopoietin (TPO). In vitro, these IL-3- and TPO-producing MSCs were superior in expanding human cord blood (CB) CD34 + hematopoietic stem/progenitor cells. MLL-AF9-transduced CB CD34 + cells could be transformed efficiently along myeloid or lymphoid lineages on IL-3- and TPO-producing MSCs. In vivo, these genetically engineered MSCs maintained their ability to differentiate into bone, adipocytes, and other stromal components. Upon transplantation of MLL-AF9-transduced CB CD34 + cells, acute myeloid leukemia (AML) and acute lymphoblastic leukemia (ALL) developed in engineered scaffolds, in which a significantly higher percentage of myeloid clones was observed in the mouse compartments compared with previous models. Engraftment of primary AML, B-cell ALL, and biphenotypic acute leukemia (BAL) patient samples was also evaluated, and all patient samples could engraft efficiently; the myeloid compartment of the BAL samples was better preserved in the human cytokine scaffold model. In conclusion, we show that we can genetically engineer the ectopic human BM microenvironment in a humanized scaffold xenograft model. This approach will be useful for functional study of the importance of niche factors in normal and malignant human hematopoiesis. Copyright © 2017 ISEH - International Society for Experimental Hematology. All rights reserved.

  10. Learning Theories within Coaching Process

    OpenAIRE

    P. Fazel

    2013-01-01

    These days we face with so many advertisements in magazines, those mentioned coaching is pragmatic specialties which help people make change in their lives. Up to know Specialty coaches are not necessarily therapists, consultants or psychologist, thus they may not know psychological theories. The International Coach Federation identifies "facilitating learning and results" as one of its four core coach competencies, without understanding learning theories coaching practic...

  11. Between coaching and social counselling

    OpenAIRE

    Toni Vrana

    2012-01-01

    Coaching appears to be another modern counselling approach, practiced initially in the business world. It can to be analyzed through a comparison with social counselling. The roots of coaching go back to Ancient Greece.. Plato used to propagate the art of aksing questions by recording the Socratic dialogue. Today coaching is in substance related to mentoring, tutoring and coaching in sport. The core of the activity - according to different coaching definitions - is discovering the hidden pote...

  12. Toward a multidimensional model of athletes' commitment to coach-athlete relationships and interdependent sport teams: a substantive-methodological synergy.

    Science.gov (United States)

    Jackson, Ben; Gucciardi, Daniel F; Dimmock, James A

    2014-02-01

    Drawing from a three-factor model of organizational commitment, we sought to provide validity evidence for a multidimensional conceptualization designed to capture adolescent athletes' commitment to their coach-athlete relationship or their team. In Study 1, 335 individual-sport athletes (Mage = 17.32, SD = 1.38) completed instruments assessing affective, normative, and continuance commitment to their relationship with their coach, and in Study 2, contextually modified instruments were administered to assess interdependent-sport athletes' (N = 286, Mage = 16.31, SD = 1.33) commitment to their team. Bayesian structural equation modeling revealed support for a three-factor (in comparison with a single-factor) model, along with relations between commitment dimensions and relevant correlates (e.g., satisfaction, return intentions, cohesion) that were largely consistent with theory. Guided by recent advancements in Bayesian modeling, these studies provide a new commitment instrument with the potential for use and refinement in team- and relationship-based settings and offer preliminary support for a conceptual framework that may help advance our understanding of the factors underpinning individuals' engagement in sport.

  13. Polyurethane foam scaffold as in vitro model for breast cancer bone metastasis.

    Science.gov (United States)

    Angeloni, Valentina; Contessi, Nicola; De Marco, Cinzia; Bertoldi, Serena; Tanzi, Maria Cristina; Daidone, Maria Grazia; Farè, Silvia

    2017-11-01

    Breast cancer (BC) represents the most incident cancer case in women (29%), with high mortality rate. Bone metastasis occurs in 20-50% cases and, despite advances in BC research, the interactions between tumor cells and the metastatic microenvironment are still poorly understood. In vitro 3D models gained great interest in cancer research, thanks to the reproducibility, the 3D spatial cues and associated low costs, compared to in vivo and 2D in vitro models. In this study, we investigated the suitability of a poly-ether-urethane (PU) foam as 3D in vitro model to study the interactions between BC tumor-initiating cells and the bone microenvironment. PU foam open porosity (>70%) appeared suitable to mimic trabecular bone structure. The PU foam showed good mechanical properties under cyclic compression (E=69-109kPa), even if lower than human trabecular bone. The scaffold supported osteoblast SAOS-2 cell line proliferation, with no cytotoxic effects. Human adipose derived stem cells (ADSC) were cultured and differentiated into osteoblast lineage on the PU foam, as shown by alizarin red staining and RT-PCR, thus offering a bone biomimetic microenvironment to the further co-culture with BC derived tumor-initiating cells (MCFS). Tumor aggregates were observed after three weeks of co-culture by e-cadherin staining and SEM; modification in CaP distribution was identified by SEM-EDX and associated to the presence of tumor cells. In conclusion, we demonstrated the suitability of the PU foam to reproduce a bone biomimetic microenvironment, useful for the co-culture of human osteoblasts/BC tumor-initiating cells and to investigate their interaction. 3D in vitro models represent an outstanding alternative in the study of tumor metastases development, compared to traditional 2D in vitro cultures, which oversimplify the 3D tissue microenvironment, and in vivo studies, affected by low reproducibility and ethical issues. Several scaffold-based 3D in vitro models have been proposed

  14. Behavior Modification in Coaching.

    Science.gov (United States)

    Lynch, Annette Rutt; Stillman, Stephen M.

    1979-01-01

    An example of behavior modification used in athletic coaching is presented. The case study involves a member of a women's basketball team and details the use of behavior modification for both weight reduction and skill improvement. (JMF)

  15. Leadership coaching experiences of clients with Alexithymia

    Directory of Open Access Journals (Sweden)

    Frans Cilliers

    2012-03-01

    Research purpose: The purpose of the research was to describe the coaching experiences of leaders with symptoms of alexithymia and to formulate hypotheses around their leadership experiences. Motivation for the study: Effective leadership is strongly associated with emotional connections with colleagues. Leaders suffering from alexithymia, struggle with making these connections. It was thought that coaching might help them bridge the gap towards building effective relationships. Research design, approach and method: A qualitative research design using case studies was used. Three participants underwent 10 months of systems psychodynamic leadership coaching, including role analysis. Researcher’s field notes and participant essays were discourse analysed. The researcher’s unconscious experiences were included in the interpretations. Main findings: Five themes manifested themselves namely, leaders’ difficult experiences with coaching, the dynamics underlying their normative, experiential and phenomenal roles and the coach’s unconscious experiences affecting the relationship. The research hypothesis referred to the differences between the role parts and the resulting anxiety. Practical/managerial implications: This coaching model did not provide sufficient opportunities for the participating leaders with regard to emotional reactivity and regulation. Contribution/value-add: The research created awareness of how alexithymia amongst leaders manifests in organisations. Unfortunately the coaching was unsuccessful in addressing the emotional task. Other ways need to be explored.

  16. Linking Narcissism, Motivation, and Doping Attitudes in Sport: A Multilevel Investigation Involving Coaches and Athletes.

    Science.gov (United States)

    Matosic, Doris; Ntoumanis, Nikos; Boardley, Ian David; Stenling, Andreas; Sedikides, Constantine

    2016-12-01

    Research on coaching (Bartholomew, Ntoumanis, & Thøgersen-Ntoumani, 2009) has shown that coaches can display controlling behaviors that have detrimental effects on athletes' basic psychological needs and quality of sport experiences. The current study extends this literature by considering coach narcissism as a potential antecedent of coaches' controlling behaviors. Further, the study tests a model linking coaches' (n = 59) own reports of narcissistic tendencies with athletes' (n = 493) perceptions of coach controlling behaviors, experiences of need frustration, and attitudes toward doping. Multilevel path analysis revealed that coach narcissism was directly and positively associated with athletes' perceptions of controlling behaviors and was indirectly and positively associated with athletes' reports of needs frustration. In addition, athletes' perceptions of coach behaviors were positively associated-directly and indirectly-with attitudes toward doping. The findings advance understanding of controlling coach behaviors, their potential antecedents, and their associations with athletes' attitudes toward doping.

  17. Application of Synthetic Polymeric Scaffolds in Breast Cancer 3D Tissue Cultures and Animal Tumor Models

    Directory of Open Access Journals (Sweden)

    Girdhari Rijal

    2017-01-01

    Full Text Available Preparation of three-dimensional (3D porous scaffolds from synthetic polymers is a challenge to most laboratories conducting biomedical research. Here, we present a handy and cost-effective method to fabricate polymeric hydrogel and porous scaffolds using poly(lactic-co-glycolic acid (PLGA or polycaprolactone (PCL. Breast cancer cells grown on 3D polymeric scaffolds exhibited distinct survival, morphology, and proliferation compared to those on 2D polymeric surfaces. Mammary epithelial cells cultured on PLGA- or PCL-coated slides expressed extracellular matrix (ECM proteins and their receptors. Estrogen receptor- (ER- positive T47D breast cancer cells are less sensitive to 4-hydroxytamoxifen (4-HT treatment when cultured on the 3D porous scaffolds than in 2D cultures. Finally, cancer cell-laden polymeric scaffolds support consistent tumor formation in animals and biomarker expression as seen in human native tumors. Our data suggest that the porous synthetic polymer scaffolds satisfy the basic requirements for 3D tissue cultures both in vitro and in vivo. The scaffolding technology has appealing potentials to be applied in anticancer drug screening for a better control of the progression of human cancers.

  18. Tredje generations coaching

    DEFF Research Database (Denmark)

    Stelter, Reinhard

    2012-01-01

    ”Tredje generations coaching” udfolder et nyt univers for coaching og coachingpsykologi gennem en bearbejdelse af aktuel samfundsforskning, nye læringsteorier og diskurser om det personlige lederskab. ”Tredje generations coaching” er funderet på en samfundsmæssig forståelse af coaching. Coaching er...... blevet så betydningsfuld, fordi samfundet opleves som uoverskueligt og hyperkomplekst. Viden skal nu udformes og anvendes i specifikke kontekster og situationer, og både i privatliv og i det offentlige rum skal vi lære at forhandle os til rette. Coaching kan hjælpe os til at skabe ny viden og mestre...... sociale forhandlinger. Coaching er dermed en slags fødselshjælp til nye refleksioner og perspektiver, en hjælp til selvhjælp og en støtte til ens egen selvdannelsesproces. ”Tredje generations coaching” fremhæver coach og coachee i deres narrativ-samskabende partnerskab. Til forskel fra første generations...

  19. Examining the relationships between challenge and threat cognitive appraisals and coaching behaviours in football coaches.

    Science.gov (United States)

    Dixon, Martin; Turner, Martin J; Gillman, Jamie

    2017-12-01

    Previous research demonstrates that sports coaching is a stressful activity. This article investigates coaches' challenge and threat cognitive appraisals of stressful situations and their impact on coaching behaviour, using Blascovich and Mendes' (2000) biopsychosocial model as a theoretical framework. A cross-sectional correlational design was utilised to examine the relationships between irrational beliefs (Shortened general attitude and belief scale), challenge and threat appraisals (Appraisal of life events scale), and coaching behaviours (Leadership scale for sports) of 105 professional football academy coaches. Findings reveal significant positive associations between challenge appraisals and social support, and between threat appraisals and autocratic behaviour, and a significant negative association between threat appraisals and positive feedback. Results also show that higher irrational beliefs are associated with greater threat, and lesser challenge cognitive appraisals. However, no associations were revealed between irrational beliefs and challenge cognitive appraisals. Additionally, findings demonstrate a positive relationship between age and training and instruction. Results suggest that practitioners should help coaches to appraise stressful situations as a challenge to promote positive coaching behaviours.

  20. High growth coaching: helping businesses throughout the UK to meet the challenges of rapid growth

    OpenAIRE

    East Midlands Development Agency

    2005-01-01

    Examines the rationale for business coaching across the English regions, overviews current provision and compares to examples overseas. Recommends a framework to ensure consistency in business coaching delivered within the Business Link model.

  1. * Comparison of Autologous, Allogeneic, and Cell-Free Scaffold Approaches for Engineered Tendon Repair in a Rabbit Model-A Pilot Study.

    Science.gov (United States)

    Wang, Wenbo; Deng, Dan; Wang, Bin; Zhou, Guangdong; Zhang, WenJie; Cao, Yilin; Zhang, Peihua; Liu, Wei

    2017-08-01

    Tendons are subjected to high strength dynamic mechanical forces in vivo. Mechanical strength is an essential requirement for tendon scaffold materials. A composite scaffold was used in this study to provide mechanical strength, which was composed of an inter part of nonwoven polyglycolic acid (PGA) fibers and an outer part of the net knitted with PGA and polylactic acid (PLA) fibers in a ratio of 4:2. This study compared three different approaches for in vivo tendon engineering, that is, cell-free scaffold and allogeneic and autologous cell seeded scaffolds, using a rabbit Achilles tendon repair model. Dermal fibroblasts were, respectively, isolated from the dermis of regular rabbits or green fluorescence protein transgenic rabbits as the autologous and the allogeneic cell sources, respectively. The cell scaffolds and cell-free scaffolds were implanted to bridge a partial segmental defect of rabbit Achilles tendon. The engineered tendons were harvested at 7 and 13 months postsurgery for various examinations. The results showed that all three groups could achieve in vivo tendon regeneration similarly with slightly better tissue formation in autologous group than in other two groups, including better scaffold degradation and relatively thicker collagen fibrils. There were no statistically significant differences in mechanical parameters among three groups. This work demonstrated that allogeneic fibroblasts and scaffold alone are likely to be used for tendon tissue engineering.

  2. Championship Science Olympiad Team: Coaching Influences on Student Performance

    Directory of Open Access Journals (Sweden)

    Lucy KULBAGO

    2016-12-01

    Full Text Available The influence of coaches working with students in grades 6 - 12 in the context of an extra-curricular academic competitive team such as Science Olympiad has not been well studied. The purpose of this study was to examine the influences of a successful head coach in the Science Olympiad program by studying a coach and team that has consistently reached the highest level of success in this program. This qualitative, intrinsic case study investigates one middle school Science Olympiad coach, Drew Kirian, and his team. Drew is one of only two coaches that has guided his team to six consecutive national championships in the Science Olympiad Program, making him a unique coach. Three categories emerged which help explain the components of successful coaching in the Science Olympiad program: structure, relationships, and expectations. These themes are well aligned with the coach-athlete relationship model developed by Mageau & Vallerand. This model may be useful in describing the necessary components of a successful coach in the academic competitive team context.

  3. Facilitated Reflective Performance Feedback: Developing an Evidence- and Theory-Based Model That Builds Relationship, Explores Reactions and Content, and Coaches for Performance Change (R2C2).

    Science.gov (United States)

    Sargeant, Joan; Lockyer, Jocelyn; Mann, Karen; Holmboe, Eric; Silver, Ivan; Armson, Heather; Driessen, Erik; MacLeod, Tanya; Yen, Wendy; Ross, Kathryn; Power, Mary

    2015-12-01

    To develop and conduct feasibility testing of an evidence-based and theory-informed model for facilitating performance feedback for physicians so as to enhance their acceptance and use of the feedback. To develop the feedback model (2011-2013), the authors drew on earlier research which highlights not only the factors that influence giving, receiving, accepting, and using feedback but also the theoretical perspectives which enable the understanding of these influences. The authors undertook an iterative, multistage, qualitative study guided by two recognized research frameworks: the UK Medical Research Council guidelines for studying complex interventions and realist evaluation. Using these frameworks, they conducted the research in four stages: (1) modeling, (2) facilitator preparation, (3) model feasibility testing, and (4) model refinement. They analyzed data, using content and thematic analysis, and used the findings from each stage to inform the subsequent stage. Findings support the facilitated feedback model, its four phases-build relationship, explore reactions, explore content, coach for performance change (R2C2)-and the theoretical perspectives informing them. The findings contribute to understanding elements that enhance recipients' engagement with, acceptance of, and productive use of feedback. Facilitators reported that the model made sense and the phases generally flowed logically. Recipients reported that the feedback process was helpful and that they appreciated the reflection stimulated by the model and the coaching. The theory- and evidence-based reflective R2C2 Facilitated Feedback Model appears stable and helpful for physicians in facilitating their reflection on and use of formal performance assessment feedback.

  4. Student-Athletes' Perceptions of Coaches' Coaching Competency at the Malaysian Public Institution of Higher Learning

    Science.gov (United States)

    Chiu, Lim Khong; Mahat, Nor Idayu; Hua, Khor Phoy; Radzuwan, Radzliyana Bt.

    2013-01-01

    This study was designed to evaluate the competency level of coaches at the higher institutions' sports competitions organized by the Universities Sports Council of Malaysia. Multi-dimensional model of leadership behaviors and models of coaching effectiveness were used as the basis for the theoretical framework. A total of 322 student-athletes…

  5. DAS COACHING FUR DIE KARRIERE

    Directory of Open Access Journals (Sweden)

    Fleseriu Cristina

    2010-12-01

    Full Text Available Coaching means change and transformation. This is the people`s ability to change their behavior, to rediscover and to create a new identity and new plans for the future. The coaching is divided, at this moment, in three categories: business coaching, executive coaching and live skills coaching. If we are talking about career coaching, we can say that this one is present in all its stages: if the person is choosing the first job, if the person is changing the workplace during the career and if the person is retiring.

  6. Constraint-based Student Modelling in Probability Story Problems with Scaffolding Techniques

    Directory of Open Access Journals (Sweden)

    Nabila Khodeir

    2018-01-01

    Full Text Available Constraint-based student modelling (CBM is an important technique employed in intelligent tutoring systems to model student knowledge to provide relevant assistance. This paper introduces the Math Story Problem Tutor (MAST, a Web-based intelligent tutoring system for probability story problems, which is able to generate problems of different contexts, types and difficulty levels for self-paced learning. Constraints in MAST are specified at a low-level of granularity to allow fine-grained diagnosis of the student error. Furthermore, MAST extends CBM to address errors due to misunderstanding of the narrative story. It can locate and highlight keywords that may have been overlooked or misunderstood leading to an error. This is achieved by utilizing the role of sentences and keywords that are defined through the Natural Language Generation (NLG methods deployed in the story problem generation. MAST also integrates CBM with scaffolding questions and feedback to provide various forms of help and guidance to the student. This allows the student to discover and correct any errors in his/her solution. MAST has been preliminary evaluated empirically and the results show the potential effectiveness in tutoring students with a decrease in the percentage of violated constraints along the learning curve. Additionally, there is a significant improvement in the results of the post–test exam in comparison to the pre-test exam of the students using MAST in comparison to those relying on the textbook

  7. Structural and functional synthetic model of mono-iron hydrogenase featuring an anthracene scaffold

    Science.gov (United States)

    Seo, Junhyeok; Manes, Taylor A.; Rose, Michael J.

    2017-06-01

    Mono-iron hydrogenase was the third type of hydrogenase discovered. Its Lewis acidic iron(II) centre promotes the heterolytic cleavage of the H-H bond and this non-redox H2 activation distinguishes it from the well-studied dinuclear [FeFe] and [NiFe] hydrogenases. Cleavage of the H-H bond is followed by hydride transfer to the enzyme's organic substrate, H4MPT+, which serves as a CO2 'carrier' in methanogenic pathways. Here we report a scaffold-based synthetic approach by which to model mono-iron hydrogenase using an anthracene framework, which supports a biomimetic fac-C,N,S coordination motif to an iron(II) centre. This arrangement includes the biomimetic and organometallic Fe-C σ bond, which enables bidirectional activity reminiscent of the native enzyme: the complex activates H2 under mild conditions, and catalyses C-H hydride abstraction plus H2 generation from a model substrate. Notably, neither H2 activation nor C-H hydride abstraction was observed in the analogous complex with a pincer-type mer-C,N,S ligation, emphasizing the importance of the fac-C,N,S-iron(II) motif in promoting enzyme-like reactivity.

  8. Telephone-Based Coaching.

    Science.gov (United States)

    Boccio, Mindy; Sanna, Rashel S; Adams, Sara R; Goler, Nancy C; Brown, Susan D; Neugebauer, Romain S; Ferrara, Assiamira; Wiley, Deanne M; Bellamy, David J; Schmittdiel, Julie A

    2017-03-01

    Many Americans continue to smoke, increasing their risk of disease and premature death. Both telephone-based counseling and in-person tobacco cessation classes may improve access for smokers seeking convenient support to quit. Little research has assessed whether such programs are effective in real-world clinical populations. Retrospective cohort study comparing wellness coaching participants with two groups of controls. Kaiser Permanente Northern California, a large integrated health care delivery system. Two hundred forty-one patients who participated in telephonic tobacco cessation coaching from January 1, 2011, to March 31, 2012, and two control groups: propensity-score-matched controls, and controls who participated in a tobacco cessation class during the same period. Wellness coaching participants received an average of two motivational interviewing-based coaching sessions that engaged the patient, evoked their reason to consider quitting, and helped them establish a quit plan. Self-reported quitting of tobacco and fills of tobacco cessation medications within 12 months of follow-up. Logistic regressions adjusting for age, gender, race/ethnicity, and primary language. After adjusting for confounders, tobacco quit rates were higher among coaching participants vs. matched controls (31% vs. 23%, p Coaching participants and class attendees filled tobacco-cessation prescriptions at a higher rate (47% for both) than matched controls (6%, p coaching was as effective as in-person classes and was associated with higher rates of quitting compared to no treatment. The telephonic modality may increase convenience and scalability for health care systems looking to reduce tobacco use and improve health.

  9. Leadership coaching experiences of clients with Alexithymia

    Directory of Open Access Journals (Sweden)

    Frans Cilliers

    2012-01-01

    Full Text Available Orientation: Leaders who find it difficult to connect emotionally with colleagues are often seen as incompetent, the idea that they may suffer from alexithymia – an inability to feel – is not taken into account. This coaching model seemed to be not successful in changing this behaviour pattern.Research purpose: The purpose of the research was to describe the coaching experiences of leaders with symptoms of alexithymia and to formulate hypotheses around their leadership experiences.Motivation for the study: Effective leadership is strongly associated with emotional connections with colleagues. Leaders suffering from alexithymia, struggle with making these connections. It was thought that coaching might help them bridge the gap towards building effective relationships.Research design, approach and method: A qualitative research design using case studies was used. Three participants underwent 10 months of systems psychodynamic leadership coaching, including role analysis. Researcher’s field notes and participant essays were discourse analysed. The researcher’s unconscious experiences were included in the interpretations.Main findings: Five themes manifested themselves namely, leaders’ difficult experiences with coaching, the dynamics underlying their normative, experiential and phenomenal roles and the coach’s unconscious experiences affecting the relationship. The research hypothesis referred to the differences between the role parts and the resulting anxiety.Practical/managerial implications: This coaching model did not provide sufficient opportunities for the participating leaders with regard to emotional reactivity and regulation. Contribution/value-add: The research created awareness of how alexithymia amongst leaders manifests in organisations. Unfortunately the coaching was unsuccessful in addressing the emotional task. Other ways need to be explored.

  10. Coaching Considerations: FAQs Useful in the Development of Literacy Coaching

    Science.gov (United States)

    Fisher, Douglas

    2012-01-01

    The National Advisory Board for the Literacy Coaching Clearinghouse have identified a number of considerations that it believed needed further discussion as schools, districts, and states embrace literacy coaching. It negotiated and discussed a number of issues surrounding coaching and agreed on 10 key ideas that should be part of the discussions…

  11. Biophysical characterization and modeling of human Ecdysoneless (ECD) protein supports a scaffolding function.

    Science.gov (United States)

    Mir, Riyaz A; Lovelace, Jeff; Schafer, Nicholas P; Simone, Peter D; Kellezi, Admir; Kolar, Carol; Spagnol, Gaelle; Sorgen, Paul L; Band, Hamid; Band, Vimla; Borgstahl, Gloria E O

    2016-01-01

    The human homolog of Drosophila ecdysoneless protein (ECD) is a p53 binding protein that stabilizes and enhances p53 functions. Homozygous deletion of mouse Ecd is early embryonic lethal and Ecd deletion delays G 1 -S cell cycle progression. Importantly, ECD directly interacts with the Rb tumor suppressor and competes with the E2F transcription factor for binding to Rb. Further studies demonstrated ECD is overexpressed in breast and pancreatic cancers and its overexpression correlates with poor patient survival. ECD overexpression together with Ras induces cellular transformation through upregulation of autophagy. Recently we demonstrated that CK2 mediated phosphorylation of ECD and interaction with R2TP complex are important for its cell cycle regulatory function. Considering that ECD is a component of multiprotein complexes and its crystal structure is unknown, we characterized ECD structure by circular dichroism measurements and sequence analysis software. These analyses suggest that the majority of ECD is composed of α-helices. Furthermore, small angle X-ray scattering (SAXS) analysis showed that deletion fragments, ECD(1-432) and ECD(1-534), are both well-folded and reveals that the first 400 residues are globular and the next 100 residues are in an extended cylindrical structure. Taking all these results together, we speculate that ECD acts like a structural hub or scaffolding protein in its association with its protein partners. In the future, the hypothetical model presented here for ECD will need to be tested experimentally.

  12. Biophysical characterization and modeling of human Ecdysoneless (ECD protein supports a scaffolding function

    Directory of Open Access Journals (Sweden)

    Nicholas P. Schafer

    2016-03-01

    Full Text Available The human homolog of Drosophila ecdysoneless protein (ECD is a p53 binding protein that stabilizes and enhances p53 functions. Homozygous deletion of mouse Ecd is early embryonic lethal and Ecd deletion delays G1-S cell cycle progression. Importantly, ECD directly interacts with the Rb tumor suppressor and competes with the E2F transcription factor for binding to Rb. Further studies demonstrated ECD is overexpressed in breast and pancreatic cancers and its overexpression correlates with poor patient survival. ECD overexpression together with Ras induces cellular transformation through upregulation of autophagy. Recently we demonstrated that CK2 mediated phosphorylation of ECD and interaction with R2TP complex are important for its cell cycle regulatory function. Considering that ECD is a component of multiprotein complexes and its crystal structure is unknown, we characterized ECD structure by circular dichroism measurements and sequence analysis software. These analyses suggest that the majority of ECD is composed of α-helices. Furthermore, small angle X-ray scattering (SAXS analysis showed that deletion fragments, ECD(1–432 and ECD(1–534, are both well-folded and reveals that the first 400 residues are globular and the next 100 residues are in an extended cylindrical structure. Taking all these results together, we speculate that ECD acts like a structural hub or scaffolding protein in its association with its protein partners. In the future, the hypothetical model presented here for ECD will need to be tested experimentally.

  13. Experimental evaluation of Surgisis as scaffold for neointestine regeneration in a rat model.

    Science.gov (United States)

    Ansaloni, L; Bonasoni, P; Cambrini, P; Catena, F; De Cataldis, A; Gagliardi, S; Gazzotti, F; Peruzzi, S; Santini, D; Taffurelli, M

    2006-01-01

    The aim of the study was to evaluate the use of Surgisis (Cook Biotech Inc.), a porcine derived extracellular matrix already used in tissue engineering, as a scaffold for neointestinal regeneration in a rat model. A 3-cm length of tubular Surgisis graft was interposed with bilateral anastomoses in the middle of an isolated ileal loop of Sprague Dawley rats with an ileostomy. The grafts were harvested and analyzed using histology and immunohistochemistry at 24 weeks after operation. Macroscopic examination revealed neither stenosis nor adhesions in the area surrounding the neointestine. The regenerated small bowel showed a mean shrinkage of 30.7% (range 20%-40%). Histologic and immunohistochemical evaluation showed a well-developed three layers of mucosa and smooth muscle and serosa in the regenerated bowel wall that were similar to those of the normal bowel with evident neovascularization. Also, the regeneration of smooth muscle fibers and innervation were evident. The preliminary results of this study showed that Surgisis allowed rapid regeneration of mucosa and smooth muscle and therefore may be a promising material for the creation of a neointestine.

  14. Optimization strategies on the structural modeling of gelatin/chitosan scaffolds to mimic human meniscus tissue

    Energy Technology Data Exchange (ETDEWEB)

    Sarem, Melika [Sports Engineering Group, Faculty of Biomedical Engineering (Center of Excellence), Amirkabir University of Technology, P.O. Box 15875-4413, Tehran (Iran, Islamic Republic of); Institute for Macromolecular Chemistry, University of Freiburg, Hermann Staudinger Haus, Freiburg D-79104 (Germany); Helmholtz Virtual Institute: Multifunctional Biomaterials for Medicine, Freiburg (Germany); Moztarzadeh, Fathollah [Sports Engineering Group, Faculty of Biomedical Engineering (Center of Excellence), Amirkabir University of Technology, P.O. Box 15875-4413, Tehran (Iran, Islamic Republic of); Biomaterials Group, Faculty of Biomedical Engineering (Center of Excellence), Amirkabir University of Technology, P.O. Box 15875-4413, Tehran (Iran, Islamic Republic of); Mozafari, Masoud, E-mail: mozafari.masoud@gmail.com [Sports Engineering Group, Faculty of Biomedical Engineering (Center of Excellence), Amirkabir University of Technology, P.O. Box 15875-4413, Tehran (Iran, Islamic Republic of); Biomaterials Group, Faculty of Biomedical Engineering (Center of Excellence), Amirkabir University of Technology, P.O. Box 15875-4413, Tehran (Iran, Islamic Republic of); Helmerich Advanced Technology Research Center, School of Material Science and Engineering, Oklahoma State University, OK 74106 (United States); Shastri, V. Prasad [Institute for Macromolecular Chemistry, University of Freiburg, Hermann Staudinger Haus, Freiburg D-79104 (Germany); Helmholtz Virtual Institute: Multifunctional Biomaterials for Medicine, Freiburg (Germany)

    2013-12-01

    Meniscus lesions are frequently occurring injuries with poor ability to heal. Typical treatment procedure includes removal of damaged regions, which can lead to sub-optimal knee biomechanics and early onset of osteoarthritis. Some of the drawbacks of current treatment approach present an opportunity for a tissue engineering solution. In this study, gelatin (G)/chitosan (Cs) scaffolds were synthesized via gel casting method and cross-linked with naturally derived cross-linker, genipin, through scaffold cross-linking method. Based on the characteristics of native meniscus tissue microstructure and function, three different layers were chosen to design the macroporous multilayered scaffolds. The multi-layered scaffolds were investigated for their ability to support human-derived meniscus cells by evaluating their morphology and proliferation using MTT assay at various time points. Based on structural, mechanical and cell compatibility considerations, laminated scaffolds composed of G60/Cs40, G80/Cs20 and G40/Cs60 samples, for the first, second and third layers, respectively, could be an appropriate combination for meniscus tissue engineering applications. - Graphical abstract: The wedge shaped multilayer/multiporous G/Cs meniscus scaffolds were mimicked by MR images of anatomical knee meniscus. The layers were chosen as G60/Cs40, G80/Cs20 and G40/Cs60, according to their characteristics similar to meniscus natural tissue, as the first, second and third layers, respectively. - Highlights: • Different gelatin/chitosan systems were chosen to engineer a multilayered scaffold. • The compressive modulus increased gradually by increasing the gelatin concentration. • Further addition of gelatin showed a meaningful decrease in the water uptake degree. • The layers supported cell growth and mimicked the meniscus fibrocartilage structure.

  15. Optimization strategies on the structural modeling of gelatin/chitosan scaffolds to mimic human meniscus tissue

    International Nuclear Information System (INIS)

    Sarem, Melika; Moztarzadeh, Fathollah; Mozafari, Masoud; Shastri, V. Prasad

    2013-01-01

    Meniscus lesions are frequently occurring injuries with poor ability to heal. Typical treatment procedure includes removal of damaged regions, which can lead to sub-optimal knee biomechanics and early onset of osteoarthritis. Some of the drawbacks of current treatment approach present an opportunity for a tissue engineering solution. In this study, gelatin (G)/chitosan (Cs) scaffolds were synthesized via gel casting method and cross-linked with naturally derived cross-linker, genipin, through scaffold cross-linking method. Based on the characteristics of native meniscus tissue microstructure and function, three different layers were chosen to design the macroporous multilayered scaffolds. The multi-layered scaffolds were investigated for their ability to support human-derived meniscus cells by evaluating their morphology and proliferation using MTT assay at various time points. Based on structural, mechanical and cell compatibility considerations, laminated scaffolds composed of G60/Cs40, G80/Cs20 and G40/Cs60 samples, for the first, second and third layers, respectively, could be an appropriate combination for meniscus tissue engineering applications. - Graphical abstract: The wedge shaped multilayer/multiporous G/Cs meniscus scaffolds were mimicked by MR images of anatomical knee meniscus. The layers were chosen as G60/Cs40, G80/Cs20 and G40/Cs60, according to their characteristics similar to meniscus natural tissue, as the first, second and third layers, respectively. - Highlights: • Different gelatin/chitosan systems were chosen to engineer a multilayered scaffold. • The compressive modulus increased gradually by increasing the gelatin concentration. • Further addition of gelatin showed a meaningful decrease in the water uptake degree. • The layers supported cell growth and mimicked the meniscus fibrocartilage structure

  16. Teaching Better, Together: Literacy Coaching as Collaborative Professional Development

    Science.gov (United States)

    Mraz, Maryann; Salas, Spencer; Mercado, Leonardo; Dikotla, Masennya

    2016-01-01

    This article draws from the combined experiences of the authors as teacher educators in very different parts of the world to describe the stance literacy coaching represents for English language teaching (ELT) contexts. They begin by defining how literacy coaching is portrayed in the research literature. They continue with a model of four broad…

  17. Instructional Coaching Implementation: Considerations for K-12 Administrators

    Science.gov (United States)

    Johnson, Kelly Gomez

    2016-01-01

    Instructional coaching is a reality in many schools today, yet administrators often lack experience or background on how to utilize this professional development model effectively. Instructional coaching can help administrators balance the managerial and instructional leadership responsibilities required of their role. As districts adopt the…

  18. COACHING A MUSICAL MINDSET

    Directory of Open Access Journals (Sweden)

    Line Fredens

    2017-01-01

    Full Text Available This article describes and analyzes the improvisational and innovative process that takes place among professional musicians during the extraordinary concert. The aim is to draw parallels to the professional coaching conversation in order to examine what new angles this analogy can contribute in proportion to coaching as a practice. In other words, how can an analysis of the musician’s communication during a successful concert shed light on what is happening in a successful professional dialogue. The article contains both empirical data and theory. The empirical data comes to results from a qualitative study undertaken in connection with my thesis within the Master of Learning Processes Specializing in Organizational Coaching at Aalborg University, and is based on interviews with five professional orchestra musicians from the Royal Danish Orchestra, the Copenhagen Phil and the Danish National Symphony Orchestra

  19. Handbook for Youth Sports Coaches.

    Science.gov (United States)

    Seefeldt, Vern, Ed.

    This handbook was generated by a survey of the specific needs of the coaching community serving young children as athletic coaches. The survey revealed a need for information that addresses the needs of beginning level volunteer coaches. The first section discusses the benefits of competitive sports for children and youth and the role of the youth…

  20. Academic Performance and Perception of Learning Following a Peer Coaching Teaching and Assessment Strategy

    Science.gov (United States)

    Moore, Catherine; Westwater-Wood, Sarah; Kerry, Roger

    2016-01-01

    Peer coaching has been associated with positive effects on learning. Specifically, these associations have been explored in complex healthcare professions. A social theory of learning has been proposed as a key component of the utility of peer coaching. Further, within the peer coaching model, assessment has been considered as an important driver.…

  1. Where Are the Women in Women's Sports? Predictors of Female Athletes' Interest in a Coaching Career

    Science.gov (United States)

    Moran-Miller, Kelli; Flores, Lisa Y.

    2011-01-01

    In this study, we used social cognitive career theory (Lent, Brown, & Hackett, 1994) to examine the development of female athletes' career interest in coaching and, specifically, the impact of contextual factors (female coaching role models, working hours, and perceived discrimination) on coaching self-efficacy and outcome expectations.…

  2. Coaching er varm luft!

    DEFF Research Database (Denmark)

    Molly, Asbjørn

    2014-01-01

    ’s use of a word is a necessary skill for the coach to master, in order to introduce a language game in which it becomes possible to ‘disturb’ this use in a constructive manner. This argument is exemplified in a specific coaching conversation with a school leader, whose use of the word recognition...... is explored using questions based on keywords and the mirror technique, and thereby stimulating a change in the coachee’s perception of the word, which gives rise to new possibilities of action....

  3. Controlled release of collagen-binding SDF-1α from the collagen scaffold promoted tendon regeneration in a rat Achilles tendon defect model.

    Science.gov (United States)

    Sun, Jie; Mou, Chenchen; Shi, Qin; Chen, Bing; Hou, Xianglin; Zhang, Wen; Li, Xiaoran; Zhuang, Yan; Shi, Jiajia; Chen, Yanyan; Dai, Jianwu

    2018-04-01

    It had been demonstrated that stromal cell-derived factor-1α (SDF-1α) could promote in situ tendon regeneration by recruiting endogenous cells. However, native SDF-1α diffuses too fast in vivo, reducing its local concentration and efficacy. In this study, we prepared a recombinant SDF-1α containing a collagen-binding domain (CBD-SDF-1α) and developed a functional collagen scaffold by tethering CBD-SDF-1α on the collagen scaffold for in situ tendon regeneration. CBD-SDF-1α could induce the migration of mesenchymal stem cells, dermal fibroblasts and Achilles tendon fibroblasts in vitro, and achieve controlled release from the collagen scaffold. In a rat Achilles tendon defect model, the functional scaffold could increase the recruitment of CXCR4 positive fibroblast-like cells and the deposition of Tenascin-C at 7 days after implantation. After 4 and 12 weeks, the functional collagen scaffold could promote the expression of type I collagen, increase the diameters of collagen fibrils and improve the mechanical properties of regenerated tendons. Hence, the functional scaffold increased the efficacy of tendon regeneration by controlling release of SDF-1α, enhancing the recruitment of fibroblast-like cells and providing instructive microenvironment and mechanical support for tendon regeneration. Therefore, CBD-SDF-1α-modified collagen scaffold could serve as a practical application for tendon regeneration. Copyright © 2018 Elsevier Ltd. All rights reserved.

  4. Semiotic scaffolding

    DEFF Research Database (Denmark)

    Hoffmeyer, Jesper

    2015-01-01

    Life processes at all levels (from the genetic to the behavioral) are coordinated by semiotic interactions between cells, tissues, membranes, organs, or individuals and tuned through evolution to stabilize important functions. A stabilizing dynamics based on a system of semiotic scaffoldings impl...... semiotic scaffolding is not, of course, exclusive for phylogenetic and ontogenetic development, it is also an important dynamical element in cultural evolution.......Life processes at all levels (from the genetic to the behavioral) are coordinated by semiotic interactions between cells, tissues, membranes, organs, or individuals and tuned through evolution to stabilize important functions. A stabilizing dynamics based on a system of semiotic scaffoldings...... implies that genes do not control the life of organisms, they merely scaffold it. The nature-nurture dynamics is thus far more complex and open than is often claimed. Contrary to physically based interactions, semiotic interactions do not depend on any direct causal connection between the sign vehicle...

  5. Biologic Scaffolds.

    Science.gov (United States)

    Costa, Alessandra; Naranjo, Juan Diego; Londono, Ricardo; Badylak, Stephen F

    2017-09-01

    Biologic scaffold materials composed of allogeneic or xenogeneic extracellular matrix are commonly used for the repair and functional reconstruction of injured and missing tissues. These naturally occurring bioscaffolds are manufactured by the removal of the cellular content from source tissues while preserving the structural and functional molecular units of the remaining extracellular matrix (ECM). The mechanisms by which these bioscaffolds facilitate constructive remodeling and favorable clinical outcomes include release or creation of effector molecules that recruit endogenous stem/progenitor cells to the site of scaffold placement and modulation of the innate immune response, specifically the activation of an anti-inflammatory macrophage phenotype. The methods by which ECM biologic scaffolds are prepared, the current understanding of in vivo scaffold remodeling, and the associated clinical outcomes are discussed in this article. Copyright © 2017 Cold Spring Harbor Laboratory Press; all rights reserved.

  6. The development of a tissue-engineered tracheobronchial epithelial model using a bilayered collagen-hyaluronate scaffold.

    Science.gov (United States)

    O'Leary, Cian; Cavanagh, Brenton; Unger, Ronald E; Kirkpatrick, C James; O'Dea, Shirley; O'Brien, Fergal J; Cryan, Sally-Ann

    2016-04-01

    Today, chronic respiratory disease is one of the leading causes of mortality globally. Epithelial dysfunction can play a central role in its pathophysiology. The development of physiologically-representative in vitro model systems using tissue-engineered constructs might improve our understanding of epithelial tissue and disease. This study sought to engineer a bilayered collagen-hyaluronate (CHyA-B) scaffold for the development of a physiologically-representative 3D in vitro tracheobronchial epithelial co-culture model. CHyA-B scaffolds were fabricated by integrating a thin film top-layer into a porous sub-layer with lyophilisation. The film layer firmly connected to the sub-layer with delamination occurring at stresses of 12-15 kPa. Crosslinked scaffolds had a compressive modulus of 1.9 kPa and mean pore diameters of 70 μm and 80 μm, depending on the freezing temperature. Histological analysis showed that the Calu-3 bronchial epithelial cell line attached and grew on CHyA-B with adoption of an epithelial monolayer on the film layer. Immunofluorescence and qRT-PCR studies demonstrated that the CHyA-B scaffolds facilitated Calu-3 cell differentiation, with enhanced mucin expression, increased ciliation and the formation of intercellular tight junctions. Co-culture of Calu-3 cells with Wi38 lung fibroblasts was achieved on the scaffold to create a submucosal tissue analogue of the upper respiratory tract, validating CHyA-B as a platform to support co-culture and cellular organisation reminiscent of in vivo tissue architecture. In summary, this study has demonstrated that CHyA-B is a promising tool for the development of novel 3D tracheobronchial co-culture in vitro models with the potential to unravel new pathways in drug discovery and drug delivery. Copyright © 2016 Elsevier Ltd. All rights reserved.

  7. The future of coaching as a profession

    DEFF Research Database (Denmark)

    Lane, David A.; Stelter, Reinhard; Rostron, Sunny Stout

    2010-01-01

    The popularity of coaching worldwide is seen in an array of international coaching conferences, burgeoning coach training and education, and emergent professional bodies for coach practitioners. This escalating demand has motivated coach practitioners, consumers and educators of coaching to advoc......The popularity of coaching worldwide is seen in an array of international coaching conferences, burgeoning coach training and education, and emergent professional bodies for coach practitioners. This escalating demand has motivated coach practitioners, consumers and educators of coaching...... of the potential benefits to the industry of professional status has led to participation in international dialogues, such the Global Convention on Coaching (GCC) and the International Coaching Research Forum (ICRF). The GCC was established with the explicit aim of promoting consultation and exploration of areas...

  8. Mellemlederes erfaringer med coaching af medarbejdere

    Directory of Open Access Journals (Sweden)

    Ole Michael Spaten

    2012-10-01

    Full Text Available 15 middle managers from a major Danish, nationwide company were trained to coach by two coaching psychologiststhrough theoretical presentations, individual coaching and peer coaching sessions with direct supervision(learning-by-doing, (see Spaten, 2011b. Until now there has been conducted rather limited empiricalresearch on managers who coach their employees. The aim was to investigate the managers challenging andsuccessful experiences when coaching their employees and how these coaching sessions were assessed by theiremployees. The qualitative analysis elicited three main themes: 1 coaching skills, 2 professional and personaldevelopment, and 3 the coaching relationship and power relations. Middle managers’ coaching skills were assessedvery positively by employees across all coaching sessions. One key finding of the study is that the manageras coach, should be very sensitive and empathetic in building the coaching relationship, be aware of the powerrelations and make clear boundaries between the role as leader and the role as coach.

  9. Coaching af nystartede universitetsstuderende

    Directory of Open Access Journals (Sweden)

    Ole Michael Spaten

    2011-12-01

    Full Text Available Mål: At undersøge hvorvidt fire coachingpsykologiske sessioner kunne reducere stress, angst og depressions niveau, samt forøge velvære hos 1. semesters studerende. At belyse hvilken betydning coaching får for de studerende.

  10. Coaching the Vegetarian Athlete

    Science.gov (United States)

    Mandali, Swarna L.

    2011-01-01

    Good nutrition is important for optimal athletic performance. Adolescent athletes often depend on their coaches for nutritional information on weight management, dietary supplements, and dietary practices. Some dietary practices, such as vegetarianism, have the potential to be harmful to the adolescent athlete if not followed with careful…

  11. Task assignment and coaching

    NARCIS (Netherlands)

    Dominguez-Martinez, S.

    2009-01-01

    An important task of a manager is to motivate her subordinates. One way in which a manager can give incentives to junior employees is through the assignment of tasks. How a manager allocates tasks in an organization, provides information to the junior employees about his ability. Without coaching

  12. Coaching preferences of athletes.

    Science.gov (United States)

    Terry, P C; Howe, B L

    1984-12-01

    The study examined the coaching preferences of 80 male and 80 female athletes, as measured by the Leadership Scale for Sports (Chelladurai and Saleh, 1978, 1980). In addition, it attempted to assess the applicability to sport of the Life-cycle and Path-goal theories of leadership. Comparisons between groups were made on the basis of sex, age, and type of sport. A MANOVA indicated that athletes in independent sports preferred more democratic behaviour (p less than .001) and less autocratic behaviour (p = .028) than athletes in interdependent sports. No differences in coaching preferences were found which could be attributed to the age or sex of the athlete, or the variability of the sports task. These results partially supported the Path-goal theory, but did not support the Life-cycle theory. Athletes of all groups tended to favour coaches who displayed training behaviour and rewarding behaviour "often", democratic behaviour and social support behaviour "occasionally", and autocratic behaviour "seldom". This consistency may be a useful finding for those organizations and institutions interested in preparing coaches.

  13. Awake Craniotomy and Coaching

    NARCIS (Netherlands)

    Ruis, Carla; Huenges Wajer, Irene; Robe, Pierre; van Zandvoort, Martine

    2014-01-01

    Background: The importance of monitoring cognition during awake craniotomy has been well described in previous studies. The relevance of being coached during such a procedure has received less attention and questions still remain unanswered about what factors are the most important herein.

  14. Coaching af nystartede universitetsstuderende

    DEFF Research Database (Denmark)

    Spaten, Ole Michael; Løkken, Lillith Olesen; Kyndesen, Anna Imer

    2011-01-01

    Mål: At undersøge hvorvidt fire coachingpsykologiske sessioner kunne reducere stress, angst og depressions niveau, samt forøge velvære hos 1.semesters studerende. At belyse hvilken betydning coaching får for de studerende. Design: Mixed method design med før- og eftertest, samt kontrolgruppe, (N=...

  15. Coaching af sygedagpengemodtagere

    DEFF Research Database (Denmark)

    Coop Henriksen, Annemette

    SFI gennemførte i foråret 2008 til foråret 2009 en pilotundersøgelse om coaching. Undersøgelsen var designet som et lodtrækningsforsøg og omfattede 42 kvindelige sygedagpengemodtagere fra Rødovre Jobcenter, der var sygemeldt med psykiske lidelser i form af stress, depression eller udbrændthed eller...... med lidelser i bevægeapparatet. Undersøgelsen er bestilt og finansieret af Rødovre Jobcenter. I rapporten undersøges, om coaching kan bidrage til at bringe sygedagpengemodtagere i arbejde eller tættere på arbejdsmarkedet målt ved, om deltagerne får fx øget motivation, mere selvtillid, øget afklaring...... og færre symptomer på sygdom. Undersøgelsen viser, at gruppen, der har modtaget coaching, oplever en positiv udvikling i forhold til stress, depression og udbrændthed. Gruppen, der modtog coaching, har den tydeligste positive udvikling, men begge grupper har oplevet en helbredsmæssig fremgang i...

  16. RELATION OF COACHING BEHAVIOR AND ROLE AMBIGUITY

    Directory of Open Access Journals (Sweden)

    Karamousalidis G.

    2010-08-01

    Full Text Available The purpose of this research was to investigate the relationship between coaching behavior and role ambiguity in defensive responsibilities using interdependent Greek sport teams. Athlete perceptions of role ambiguity (defense were assessed using a questionnaire developed by Beauchamp, Bray, Eys and Carron (2002 andcoaching behavior was assessed using the Coaching Behavior Questionnaire, (Williams, et. al., 2003. The sample consisted of 409 athletes of basketball, volleyball, handball and soccer. Confirmatory factor analysis provided the construct validity of the questionnaires and correlations among the scales confirmed construct validity. The implications of the results are discussed and future research should continue to investigate the multidimensional models of both coaching behavior and role ambiguity in sport settings.

  17. Geometry optimization of a fibrous scaffold based on mathematical modelling and CFD simulation of a dynamic cell culture

    DEFF Research Database (Denmark)

    Tajsoleiman, Tannaz; J. Abdekhodaie, Mohammad; Gernaey, Krist

    2016-01-01

    are the main bottlenecks in this type of processes. In this regard, mathematical modelling and computational fluid dynamics simulation (CFD) are powerful tools to identify an efficient and optimized design by providing reliable insights of the process. This study presents a mathematical model and CFD...... an optimized design of the scaffold within a new mathematical optimization algorithm that is proposed. The main concept of this optimization routine isto maintain a large effective surface while simultaneously keeping the shear stress levelin an operating range that is expected to be supporting growth....... Therewith, it should bepossible to gradually reach improved culture efficiency as defined in the objective function....

  18. Integrating Scaffolding Strategies into Technology-Enhanced Assessments of English Learners: Task Types and Measurement Models

    Science.gov (United States)

    Wolf, Mikyung Kim; Guzman-Orth, Danielle; Lopez, Alexis; Castellano, Katherine; Himelfarb, Igor; Tsutagawa, Fred S.

    2016-01-01

    This article investigates ways to improve the assessment of English learner students' English language proficiency given the current movement of creating next-generation English language proficiency assessments in the Common Core era. In particular, this article discusses the integration of scaffolding strategies, which are prevalently utilized as…

  19. AMECM/DCB scaffold prompts successful total meniscus reconstruction in a rabbit total meniscectomy model.

    Science.gov (United States)

    Yuan, Zhiguo; Liu, Shuyun; Hao, Chunxiang; Guo, Weimin; Gao, Shuang; Wang, Mingjie; Chen, Mingxue; Sun, Zhen; Xu, Yichi; Wang, Yu; Peng, Jiang; Yuan, Mei; Guo, Quan-Yi

    2016-12-01

    Tissue-engineered meniscus regeneration is a very promising treatment strategy for meniscus lesions. However, generating the scaffold presents a huge challenge for meniscus engineering as this has to meet particular biomechanical and biocompatibility requirements. In this study, we utilized acellular meniscus extracellular matrix (AMECM) and demineralized cancellous bone (DCB) to construct three different types of three-dimensional porous meniscus scaffold: AMECM, DCB, and AMECM/DCB, respectively. We tested the scaffolds' physicochemical characteristics and observed their interactions with meniscus fibrochondrocytes to evaluate their cytocompatibility. We implanted the three different types of scaffold into the medial knee menisci of New Zealand rabbits that had undergone total meniscectomy; negative control rabbits received no implants. The reconstructed menisci and corresponding femoral condyle and tibial plateau cartilage were all evaluated at 3 and 6 months (n = 8). The in vitro study demonstrated that the AMECM/DCB scaffold had the most suitable biomechanical properties, as this produced the greatest compressive and tensile strength scores. The AMECM/DCB and AMECM scaffolds facilitated fibrochondrocyte proliferation and the secretion of collagen and glycosaminoglycans (GAGs) more effectively than did the DCB scaffold. The in vivo experiments demonstrated that both the AMECM/DCB and DCB groups had generated neomeniscus at both 3 and 6 months post-implantation, but there was no obvious meniscus regeneration in the AMECM or control groups, so the neomeniscus analysis could not perform on AMECM and control group. At both 3 and 6 months, histological scores were better for regenerated menisci in the AMECM/DCB than in the DCB group, and significantly better for articular cartilage in the AMECM/DCB group compared with the other three groups. Knee MRI scores (Whole-Organ Magnetic Resonance Imaging Scores (WORMS)) were better in the AMECM/DCB group than in the

  20. Aligning Executive Coaching with Strategic Business Goals.

    Science.gov (United States)

    Kumata, Ellen

    2002-01-01

    Explains executive coaching, which is traditionally focused on individual executives, and how it can help align individual development with an organization's strategic goals. Describes a counseling model of identifying an individual's goals, challenges, and development needs and then helping him or her gain insight on how to address these needs.…

  1. Exploring Touch Communication Between Coaches and Athletes

    African Journals Online (AJOL)

    denise

    cognitive psychology, to develop and test a four-component model (4 C's) that depicts the most influential ... relational stage, and what spectators, parents and other athletes may think. By illustrating how touch is enacted and experienced by a group of college coaches and athletes, the study represents an initial step toward ...

  2. A Digital Coach That Provides Affective and Social Learning Support to Low-Literate Learners

    Science.gov (United States)

    Schouten, Dylan G. M.; Venneker, Fleur; Bosse, Tibor; Neerincx, Mark A.; Cremers, Anita H. M.

    2018-01-01

    In this study, we investigate if a digital coach for low-literate learners that provides cognitive learning support based on scaffolding can be improved by adding affective learning support based on motivational interviewing, and social learning support based on small talk. Several knowledge gaps are identified: motivational interviewing and small…

  3. One-Year Outcomes of Total Meniscus Reconstruction Using a Novel Fiber-Reinforced Scaffold in an Ovine Model.

    Science.gov (United States)

    Patel, Jay M; Merriam, Aaron R; Culp, Brian M; Gatt, Charles J; Dunn, Michael G

    2016-04-01

    Meniscus injuries and resulting meniscectomies lead to joint deterioration, causing pain, discomfort, and instability. Tissue-engineered devices to replace the meniscus have not shown consistent success with regard to function, mechanical integrity, or protection of cartilage. To evaluate a novel resorbable polymer fiber-reinforced meniscus reconstruction scaffold in an ovine model for 52 weeks and assess its integrity, tensile and compressive mechanics, cell phenotypes, matrix organization and content, and protection of the articular cartilage surfaces. Controlled laboratory study. Eight skeletally mature ewes were implanted with the fiber-reinforced scaffold after total meniscectomy, and 2 additional animals had untreated total meniscectomies. Animals were sacrificed at 52 weeks, and the explants and articular surfaces were analyzed macroscopically. Explants were characterized by ultimate tensile testing, confined compression creep testing, and biochemical, histological, and immunohistochemical analyses. Cartilage damage was characterized using the Mankin score on histologic slides from both the femur and tibia. One sheep was removed from the study because of a torn extensor tendon; the remaining 7 explants remained fully intact and incorporated into the bone tunnels. All explants exhibited functional tensile loads, tensile stiffnesses, and compressive moduli. Fibrocartilagenous repair with both types 1 and 2 collagen were observed, with areas of matrix organization and biochemical content similar to native tissue. Narrowing in the body region was observed in 5 of 7 explants. Mankin scores showed less cartilage damage in the explant group (femoral condyle: 3.43 ± 0.79, tibial plateau: 3.50 ± 1.63) than in the meniscectomy group (femoral condyle: 8.50 ± 3.54, tibial plateau: 6.75 ± 2.47) and were comparable with Mankin scores at the previously reported 16- and 32-week time points. A resorbable fiber-reinforced meniscus scaffold supports formation of functional

  4. Virtual training and coaching of health behavior: example from mindfulness meditation training.

    Science.gov (United States)

    Hudlicka, Eva

    2013-08-01

    Computer-based virtual coaches are increasingly being explored for patient education, counseling, and health behavior training and coaching. The objective of this research was to develop and evaluate a Virtual Mindfulness Coach for training and coaching in mindfulness meditation. The coach was implemented as an embodied conversational character, providing mindfulness training and coaching via mixed initiative, text-based, natural language dialog with the student, and emphasizing affect-adaptive interaction. (The term 'mixed initiative dialog' refers to a human-machine dialog where either can initiate a conversation or a change in the conversation topic.) Findings from a pilot evaluation study indicate that the coach-based training is more effective in helping students establish a regular practice than self-administered training using written and audio materials. The coached group also appeared to be in more advanced stages of change in terms of the transtheoretical model, and have a higher sense of self-efficacy regarding establishment of a regular mindfulness practice. These results suggest that virtual coach-based training of mindfulness is both feasible, and potentially more effective, than a self-administered program. Of particular interest is the identification of the specific coach features that contribute to its effectiveness. Virtual coaches could provide easily accessible and cost-effective customized training for a range of health behaviors. The affect-adaptive aspect of these coaches is particularly relevant for helping patients establish long-term behavior changes. Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.

  5. Mathematical modeling of degradation for bulk-erosive polymers: applications in tissue engineering scaffolds and drug delivery systems.

    Science.gov (United States)

    Chen, Yuhang; Zhou, Shiwei; Li, Qing

    2011-03-01

    The degradation of polymeric biomaterials, which are widely exploited in tissue engineering and drug delivery systems, has drawn significant attention in recent years. This paper aims to develop a mathematical model that combines stochastic hydrolysis and mass transport to simulate the polymeric degradation and erosion process. The hydrolysis reaction is modeled in a discrete fashion by a fundamental stochastic process and an additional autocatalytic effect induced by the local carboxylic acid concentration in terms of the continuous diffusion equation. Illustrative examples of microparticles and tissue scaffolds demonstrate the applicability of the model. It is found that diffusive transport plays a critical role in determining the degradation pathway, whilst autocatalysis makes the degradation size dependent. The modeling results show good agreement with experimental data in the literature, in which the hydrolysis rate, polymer architecture and matrix size actually work together to determine the characteristics of the degradation and erosion processes of bulk-erosive polymer devices. The proposed degradation model exhibits great potential for the design optimization of drug carriers and tissue scaffolds. Copyright © 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

  6. Scaffolding learning by modelling: The effects of partially worked-out models

    NARCIS (Netherlands)

    Mulder, Y.G.; Bollen, Lars; de Jong, Anthonius J.M.; Lazonder, Adrianus W.

    2016-01-01

    Creating executable computer models is a potentially powerful approach to science learning. Learning by modelling is also challenging because students can easily get overwhelmed by the inherent complexities of the task. This study investigated whether offering partially worked-out models can

  7. Designing Online Scaffolds for Interactive Computer Simulation

    Science.gov (United States)

    Chen, Ching-Huei; Wu, I-Chia; Jen, Fen-Lan

    2013-01-01

    The purpose of this study was to examine the effectiveness of online scaffolds in computer simulation to facilitate students' science learning. We first introduced online scaffolds to assist and model students' science learning and to demonstrate how a system embedded with online scaffolds can be designed and implemented to help high school…

  8. Nutritional knowledge of UK coaches.

    Science.gov (United States)

    Cockburn, Emma; Fortune, Alistair; Briggs, Marc; Rumbold, Penny

    2014-04-10

    Athletes obtain nutritional information from their coaches, yet their competency in this area is lacking. Currently, no research exists in the UK which has a different coach education system to many other countries. Therefore, the aim of this study was to evaluate the sports nutrition knowledge of UK coaching certificate (UKCC) level 2 and 3, hockey and netball qualified coaches. All coaches (n = 163) completed a sports nutrition questionnaire to identify: (a) if they provided nutritional advice; (b) their level of sport nutrition knowledge; and (c) factors that may have contributed to their level of knowledge. Over half the coaches provided advice to their athletes (n = 93, 57.1%), even though they were not competent to do so. Coaches responded correctly to 60.3 ± 10.5% of all knowledge questions with no differences between those providing advice and those who did not (p > 0.05). Those coaches who had undertaken formal nutrition training achieved higher scores than those who had not (p sports coaches would benefit from continued professional development in sports nutrition to enhance their coaching practice.

  9. Nutritional Knowledge of UK Coaches

    Directory of Open Access Journals (Sweden)

    Emma Cockburn

    2014-04-01

    Full Text Available Athletes obtain nutritional information from their coaches, yet their competency in this area is lacking. Currently, no research exists in the UK which has a different coach education system to many other countries. Therefore, the aim of this study was to evaluate the sports nutrition knowledge of UK coaching certificate (UKCC level 2 and 3, hockey and netball qualified coaches. All coaches (n = 163 completed a sports nutrition questionnaire to identify: (a if they provided nutritional advice; (b their level of sport nutrition knowledge; and (c factors that may have contributed to their level of knowledge. Over half the coaches provided advice to their athletes (n = 93, 57.1%, even though they were not competent to do so. Coaches responded correctly to 60.3 ± 10.5% of all knowledge questions with no differences between those providing advice and those who did not (p > 0.05. Those coaches who had undertaken formal nutrition training achieved higher scores than those who had not (p < 0.05. In conclusion, UK sports coaches would benefit from continued professional development in sports nutrition to enhance their coaching practice.

  10. Scaffolded biology.

    Science.gov (United States)

    Minelli, Alessandro

    2016-09-01

    Descriptions and interpretations of the natural world are dominated by dichotomies such as organism vs. environment, nature vs. nurture, genetic vs. epigenetic, but in the last couple of decades strong dissatisfaction with those partitions has been repeatedly voiced and a number of alternative perspectives have been suggested, from perspectives such as Dawkins' extended phenotype, Turner's extended organism, Oyama's Developmental Systems Theory and Odling-Smee's niche construction theory. Last in time is the description of biological phenomena in terms of hybrids between an organism (scaffolded system) and a living or non-living scaffold, forming unit systems to study processes such as reproduction and development. As scaffold, eventually, we can define any resource used by the biological system, especially in development and reproduction, without incorporating it as happens in the case of resources fueling metabolism. Addressing biological systems as functionally scaffolded systems may help pointing to functional relationships that can impart temporal marking to the developmental process and thus explain its irreversibility; revisiting the boundary between development and metabolism and also regeneration phenomena, by suggesting a conceptual framework within which to investigate phenomena of regular hypermorphic regeneration such as characteristic of deer antlers; fixing a periodization of development in terms of the times at which a scaffolding relationship begins or is terminated; and promoting plant galls to legitimate study objects of developmental biology.

  11. Validation of an in vitro 3D bone culture model with perfused and mechanically stressed ceramic scaffold

    Directory of Open Access Journals (Sweden)

    G Bouet

    2015-05-01

    Full Text Available An engineered three dimensional (3D in vitro cell culture system was designed with the goal of inducing and controlling in vitro osteogenesis in a reproducible manner under conditions more similar to the in vivo bone microenvironment than traditional two-dimensional (2D models. This bioreactor allows efficient mechanical loading and perfusion of an original cubic calcium phosphate bioceramic of highly controlled composition and structure. This bioceramic comprises an internal portion containing homogeneously interconnected macropores surrounded by a dense layer, which minimises fluid flow bypass around the scaffold. This dense and flat layer permits the application of a homogeneous loading on the bioceramic while also enhancing its mechanical strength. Numerical modelling of constraints shows that the system provides direct mechanical stimulation of cells within the scaffold. Experimental results establish that under perfusion at a steady flow of 2 µL/min, corresponding to 3 ≤ Medium velocity ≤ 23 µm/s, mouse calvarial cells grow and differentiate as osteoblasts in a reproducible manner, and lay down a mineralised matrix. Moreover, cells respond to mechanical loading by increasing C-fos expression, which demonstrates the effective mechanical stimulation of the culture within the scaffold. In summary, we provide a “proof-of-concept” for osteoblastic cell culture in a controlled 3D culture system under perfusion and mechanical loading. This model will be a tool to analyse bone cell functions in vivo, and will provide a bench testing system for the clinical assessment of bioactive bone-targeting molecules under load.

  12. Coaching as a tool of managerial support

    OpenAIRE

    Żukowska, Joanna

    2012-01-01

    The article is the introduce to coaching empirical research. There will be shown the coaching definition, perfect coaching process, all procedures and ways to deal coaching conversation. Moreover the paper will present the skills of asking questions in coaching. Joanna Żukowska

  13. Coaching Discourse: Supporting Teachers' Professional Learning

    Science.gov (United States)

    Heineke, Sally F.

    2013-01-01

    Although coaching is used in many schools to facilitate teachers' professional learning, few studies look closely at coaching discourse. Exploring how coaching facilitates teachers' professional development, this study used tape-recorded coaching sessions and individual post-interviews to examine the one-on-one coaching interactions of 4…

  14. Modeling and Validation of Multilayer Poly(Lactide-Co-Glycolide) Scaffolds for In Vitro Directed Differentiation of Juxtaposed Cartilage and Bone.

    Science.gov (United States)

    Huang, George X; Arany, Praveen R; Mooney, David J

    2015-08-01

    Polymeric scaffolds, which release growth factors in a temporally controlled manner, have successfully directed the differentiation of stem cells into monolithic tissues of a single lineage. However, engineering precise boundaries in multilineage functional tissues, such as the juxtaposed cartilaginous and osseous tissue present in articulated joints, often remains a challenge. This work demonstrates a precise materials system for in vitro reconstruction of the three-dimensional architecture of these types of human tissues. Multilayer poly(lactide-co-glycolide) (PLG) scaffolds were used to produce spatiotemporal gradients to direct the differentiation of an initially uniform population of mesenchymal stem cells (MSCs) into juxtaposed cartilage and bone. Specifically, growth factors (chondrogenic transforming growth factor-β3 and osteogenic bone morphogenetic protein-4) and their neutralizing antibodies were incorporated within distinct layers of the PLG scaffolds to create spatially segregated morphogen fields within the scaffold volume. The multilayer PLG scaffold designs were optimized by mathematical modeling, and generation of spatially segregated morphogen gradients was validated by assessing activity of luciferase reporter cell lines responsive to each growth factor. Scaffolds seeded with MSCs demonstrated production of juxtaposed cartilage and bone, as evaluated by biochemical staining and western blotting for tissue-specific matrix proteins. This work demonstrates a significant advance for the engineering of implantable constructs comprising tissues of multiple lineages, with potential applications in orthopedic regenerative medicine.

  15. Geometric and mechanical properties evaluation of scaffolds for bone tissue applications designing by a reaction-diffusion models and manufactured with a material jetting system

    Directory of Open Access Journals (Sweden)

    Marco A. Velasco

    2016-10-01

    Full Text Available Scaffolds are essential in bone tissue engineering, as they provide support to cells and growth factors necessary to regenerate tissue. In addition, they meet the mechanical function of the bone while it regenerates. Currently, the multiple methods for designing and manufacturing scaffolds are based on regular structures from a unit cell that repeats in a given domain. However, these methods do not resemble the actual structure of the trabecular bone which may work against osseous tissue regeneration. To explore the design of porous structures with similar mechanical properties to native bone, a geometric generation scheme from a reaction-diffusion model and its manufacturing via a material jetting system is proposed. This article presents the methodology used, the geometric characteristics and the modulus of elasticity of the scaffolds designed and manufactured. The method proposed shows its potential to generate structures that allow to control the basic scaffold properties for bone tissue engineering such as the width of the channels and porosity. The mechanical properties of our scaffolds are similar to trabecular tissue present in vertebrae and tibia bones. Tests on the manufactured scaffolds show that it is necessary to consider the orientation of the object relative to the printing system because the channel geometry, mechanical properties and roughness are heavily influenced by the position of the surface analyzed with respect to the printing axis. A possible line for future work may be the establishment of a set of guidelines to consider the effects of manufacturing processes in designing stages.

  16. Interpersonal Mechanisms Explaining the Transfer of Well- and Ill-Being in Coach-Athlete Dyads.

    Science.gov (United States)

    Stebbings, Juliette; Taylor, Ian M; Spray, Christopher M

    2016-06-01

    The current study explored coaches' interpersonal behaviors as a mechanism for well- and ill-being contagion from coach to athlete and vice versa. Eighty-two coach-athlete dyads from individual sports completed selfreport measures before and after a training session. Structural equation modeling supported three actor-partner interdependence mediation models, in which coaches' presession well- and ill-being were associated with changes in athletes' well- and ill-being over the course of the session. These relationships were mediated by athletes' perceptions of their coaches' interpersonal styles during the session. The reciprocal transfer from athlete to coach was not fully supported. Nonetheless, coaches' perceptions of their own interpersonal behaviors were associated with changes in their postsession well- and ill-being. Overall, evidence is provided for the contagion of affect from authority figures to those under their instruction but not vice versa.

  17. Reinforcement of esophageal anastomoses with an extracellular matrix scaffold in a canine model.

    Science.gov (United States)

    Nieponice, Alejandro; Gilbert, Thomas W; Badylak, Stephen F

    2006-12-01

    The gastric pull-up procedure, a standard intervention after radical esophagectomy, is associated with high morbidity and mortality due to leaks and stricture. A previous preclinical study showed that an extracellular matrix (ECM) scaffold with autologous muscle tissue could be used to repair a complete circumferential defect in the cervical esophagus. The aim of the present study was to determine if healing of end-to-end anastomoses of the esophagus could be improved by reinforcement with an ECM scaffold. Twelve female mongrel dogs underwent a complete transection of either the cervical esophagus (n = 6) or the gastroesophageal junction (n = 6). A portion of the endomucosa at the anastomotic site was resected and replaced with an ECM scaffold in contact with the subjacent muscle and the muscle was anastomosed. The measured end points included macroscopic and microscopic evaluation and quantification of the esophageal diameter at the anastomotic site. No anastomotic leaks or systemic complications were observed in the ECM-treated animals. Morphologic findings in both groups showed complete mucosal covering of the surgery site. The remodeled esophageal tissue showed angiogenesis and complete epithelialization. Intact, organized layers of muscle tissue were present between the native muscularis externa and the submucosal layer and effectively bridged the transected ends. The ECM scaffold altered the default mechanism of esophageal repair. Scar tissue formation with associated stricture was virtually eliminated, and the esophageal healing response was characterized by the replacement with structurally normal tissue layers. These findings suggest that the high morbidity rate associated with esophagectomy procedures may be reduced by this ECM augmentation procedure at the anastomotic site.

  18. A Temporal Map of Coaching

    Directory of Open Access Journals (Sweden)

    Tim Theeboom

    2017-08-01

    Full Text Available Economic pressures on companies, technological developments, and less stable career paths pose potential threats to the well-being of employees (e.g., stress, burn-out and require constant adaptation. In the light of these challenges, it is not surprising that employees often seek the support of a coach. The role of a coach is to foster change by facilitating a coachees’ movement through a self-regulatory cycle with the ultimate aim of stimulating sustained well-being and functioning. While meta-analytic research indicates that coaching interventions can be effectively applied to assist employees in dealing with change, the current literature on coaching lacks solid theoretical frameworks that are needed to build a cumulative knowledge-base and to inspire evidence-based practice. In this conceptual analysis, we examine the coaching process through a temporal lens. By doing so, we provide an integrated theoretical framework: a temporal map of coaching. In this framework, we link seminal concepts in psychology to the coaching process, and describe which competencies of coachees are crucial in the different stages of change that coaching aims to bring about. During the preparatory contemplation stage, targeting coachees’ awareness by enhancing their mindfulness and environmental receptiveness is important. During the contemplation stage, coachees’ willingness and perceived ability to change are central competencies. We propose that coaches should therefore foster intrinsic goal orientation and self-efficacy during this stage. During the planning stage, coaches should focus on goal-setting and implementation intentions. Finally, during the maintenance/termination stage, stimulating coachees’ reflection is especially important in order to help them to integrate their learning experiences. The framework delineated in this paper contributes to the understanding of coaching as a tool to assist employees in dealing with the challenges of an

  19. Modeling mechanical signals on the surface of µCT and CAD based rapid prototype scaffold models to predict (early stage) tissue development.

    Science.gov (United States)

    Hendrikson, W J; van Blitterswijk, C A; Verdonschot, N; Moroni, L; Rouwkema, J

    2014-09-01

    In the field of tissue engineering, mechano-regulation theories have been applied to help predict tissue development in tissue engineering scaffolds in the past. For this, finite element models (FEMs) were used to predict the distribution of strains within a scaffold. However, the strains reported in these studies are volumetric strains of the material or strains developed in the extracellular matrix occupying the pore space. The initial phase of cell attachment and growth on the biomaterial surface has thus far been neglected. In this study, we present a model that determines the magnitude of biomechanical signals on the biomaterial surface, enabling us to predict cell differentiation stimulus values at this initial stage. Results showed that magnitudes of the 2D strain--termed surface strain--were lower when compared to the 3D volumetric strain or the conventional octahedral shear strain as used in current mechano-regulation theories. Results of both µCT and CAD derived FEMs from the same scaffold were compared. Strain and fluid shear stress distributions, and subsequently the cell differentiation stimulus, were highly dependent on the pore shape. CAD models were not able to capture the distributions seen in the µCT FEM. The calculated mechanical stimuli could be combined with current mechanobiological models resulting in a tool to predict cell differentiation in the initial phase of tissue engineering. Although experimental data is still necessary to properly link mechanical signals to cell behavior in this specific setting, this model is an important step towards optimizing scaffold architecture and/or stimulation regimes. © 2014 Wiley Periodicals, Inc.

  20. Antecedents of perceived coach interpersonal behaviors: the coaching environment and coach psychological well- and ill-being.

    Science.gov (United States)

    Stebbings, Juliette; Taylor, Ian M; Spray, Christopher M; Ntoumanis, Nikos

    2012-08-01

    Embedded in the self-determination theory (Deci & Ryan, 2000) framework, we obtained self-report data from 418 paid and voluntary coaches from a variety of sports and competitive levels with the aim of exploring potential antecedents of coaches' perceived autonomy supportive and controlling behaviors. Controlling for socially desirable responses, structural equation modeling revealed that greater job security and opportunities for professional development, and lower work-life conflict were associated with psychological need satisfaction, which, in turn, was related to an adaptive process of psychological well-being and perceived autonomy support toward athletes. In contrast, higher work-life conflict and fewer opportunities for development were associated with a distinct maladaptive process of thwarted psychological needs, psychological ill-being, and perceived controlling interpersonal behavior. The results highlight how the coaching context may impact upon coaches' psychological health and their interpersonal behavior toward athletes. Moreover, evidence is provided for the independence of adaptive and maladaptive processes within the self-determination theory paradigm.

  1. Executive Coaching Practices in the Adult Workplace

    Science.gov (United States)

    Campone, Francine

    2015-01-01

    This chapter provides an overview of key principles and practices in executive coaching. Coaching is discussed as a reflective learning opportunity and offers the theoretical grounding, strategies, and case studies for each of four key elements of a coaching engagement.

  2. Coaching i mange læringsrum

    OpenAIRE

    Helle Alrø; Camilla Nilles

    2015-01-01

    Coaching in many learning environments. Coaching and coaching skills can be acquired in various ways andin more or less formalized educational settings. This article focuses on a training course at Aalborg University,where students are trained in coaching and in facilitation of coaching. The aim is to shed light on how coa-ching skills can be acquired through a series of theoretical, analytical and practical learning activities in andbetween different learning environments. The article reflec...

  3. Appraising coach performance: A qualitative analysis of coaches ...

    African Journals Online (AJOL)

    Among the important human resources practices is performance appraisal. The current study examines the perceptions of sport coaches regarding their performance appraisal. A qualitative approach using in depth interviews was adopted for the study. The sample comprised eleven sport coaches who were selected ...

  4. Coaching: A Philosophy, Concept, Tool and Skill

    OpenAIRE

    John BAX; Magdalena NEGRUTIU; Traian-Ovidiu CALOTĂ

    2011-01-01

    Nowadays you will come across the word ‘coaching’ anytime and anywhere in the world. It is used in education, but also in business. It is used in big organizations, but also in small ones. It is used in non-profit organizations, but also in profit ones. It is used on an executive level, but also on the work floor. You come across various types of coaching, like personal coaching, buddy coaching, peer coaching, executive coaching, board coaching, business coaching, performance coaching, etc. B...

  5. Advancing the Practice of Health Coaching: Differentiation From Wellness Coaching.

    Science.gov (United States)

    Huffman, Melinda H

    2016-09-01

    The increasing demand for health coaches and wellness coaches in worksite health promotion and the marketplace has resulted in a plethora of training programs with wide variations in coaching definitions, content, attributes, and eligibility of those who may train. It is in the interest of public awareness and safety that those in clinical practice take the lead in this discussion and offer a reasonable contrast and comparison focusing on the risks and responsibilities of health coaching in particular. With the endorsement of the American Association of Occupational Health Nurses (AAOHN), the National Society of Health Coaches, whose membership is primarily nurses, discusses the issue and states its position here. © 2016 The Author(s).

  6. Developing multi-cellular tumor spheroid model (MCTS) in the chitosan/collagen/alginate (CCA) fibrous scaffold for anticancer drug screening

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Jian-Zheng, E-mail: wppzheng@126.com [Laboratory of Biomedical Material Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023 (China); Affiliated General Hospital, Tianguan Group Co., Ltd, Nanyang 473000 (China); Testing Center of Henan Tianguan Group Co., Ltd, Nanyang 473000 (China); Zhu, Yu-Xia [Laboratory of Biomedical Material Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023 (China); Affiliated General Hospital, Tianguan Group Co., Ltd, Nanyang 473000 (China); Testing Center of Henan Tianguan Group Co., Ltd, Nanyang 473000 (China); Ma, Hui-Chao; Chen, Si-Nan; Chao, Ji-Ye; Ruan, Wen-Ding; Wang, Duo; Du, Feng-guang [Affiliated General Hospital, Tianguan Group Co., Ltd, Nanyang 473000 (China); Testing Center of Henan Tianguan Group Co., Ltd, Nanyang 473000 (China); Meng, Yue-Zhong [State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275 (China)

    2016-05-01

    In this work, a 3D MCTS-CCA system was constructed by culturing multi-cellular tumor spheroid (MCTS) in the chitosan/collagen/alginate (CCA) fibrous scaffold for anticancer drug screening. The CCA scaffolds were fabricated by spray-spinning. The interactions between the components of the spray-spun fibers were evidenced by methods of Coomassie Blue stain, X-ray diffraction (XRD) and Fourier transform-infrared spectroscopy (FTIR). Co-culture indicated that MCF-7 cells showed a spatial growth pattern of multi-cellular tumor spheroid (MCTS) in the CCA fibrous scaffold with increased proliferation rate and drug-resistance to MMC, ADM and 5-Aza comparing with the 2D culture cells. Significant increases of total viable cells were found in 3D MCTS groups after drug administration by method of apoptotic analysis. Glucose–lactate analysis indicated that the metabolism of MCTS in CCA scaffold was closer to the tumor issue in vivo than the monolayer cells. In addition, MCTS showed the characteristic of epithelial mesenchymal transition (EMT) which is subverted by carcinoma cells to facilitate metastatic spread. These results demonstrated that MCTS in CCA scaffold possessed a more conservative phenotype of tumor than monolayer cells, and anticancer drug screening in 3D MCTS-CCA system might be superior to the 2D culture system. - Highlights: • Chitosan/collagen/alginate (CCA) scaffolds were fabricated by spray-spinning. • MCF-7 cells presented a multi-cellular tumor spheroid model (MCTS) in CCA scaffold. • MCTS in CCA possessed a more conservative phenotype of tumor than monolayer cells. • Anticancer drug screening in MCTS-CCA system is superior to 2D culture system.

  7. Verification of the numerical model of insert-type joint of scaffolding in relation to experimental research

    Science.gov (United States)

    Pieńko, Michał; Błazik-Borowa, Ewa

    2018-01-01

    This paper presents the problem of comparing the results of computer simulations with the results of laboratory tests. The subject of the study was the insert-type joint of scaffolding loaded with a bending moment. The research was carried out on the real elements of the scaffolding. Due to the complexity of the connection different friction coefficients and depths of wedge insertion were taken into account in the analysis. The aim of conducting the series of analyses was to determine the sensitivity of the model to the mentioned characteristics. Since laboratory tests were carried out on the real samples, there were no preparations of surface involved in the load transfer. This approach caused many problems with the clear definition of the nature of work of individual node elements during the load. The analysis consist of two stages: the stage in which the connection is defined (the wedge is inserted into the rosette), and the loading stage (the node is loaded by the bending moment).

  8. Anterior cruciate ligament reconstruction in a rabbit model using silk-collagen scaffold and comparison with autograft.

    Directory of Open Access Journals (Sweden)

    Fanggang Bi

    Full Text Available The objective of the present study was to perform an in vivo assessment of a novel silk-collagen scaffold for anterior cruciate ligament (ACL reconstruction. First, a silk-collagen scaffold was fabricated by combining sericin-extracted knitted silk fibroin mesh and type I collagen to mimic the components of the ligament. Scaffolds were electron-beam sterilized and rolled up to replace the ACL in 20 rabbits in the scaffold group, and autologous semitendinosus tendons were used to reconstruct the ACL in the autograft control group. At 4 and 16 weeks after surgery, grafts were retrieved and analyzed for neoligament regeneration and tendon-bone healing. To evaluate neoligament regeneration, H&E and immunohistochemical staining was performed, and to assess tendon-bone healing, micro-CT, biomechanical test, H&E and Russell-Movat pentachrome staining were performed. Cell infiltration increased over time in the scaffold group, and abundant fibroblast-like cells were found in the core of the scaffold graft at 16 weeks postoperatively. Tenascin-C was strongly positive in newly regenerated tissue at 4 and 16 weeks postoperatively in the scaffold group, similar to observations in the autograft group. Compared with the autograft group, tendon-bone healing was better in the scaffold group with trabecular bone growth into the scaffold. The results indicate that the silk-collagen scaffold has considerable potential for clinical application.

  9. Coaches, Sexual Harassment and Education

    Science.gov (United States)

    Fasting, Kari; Brackenridge, Celia

    2009-01-01

    Sexual harassment in sport has become an active research field within the past decade yet we know relatively little about the characteristics of the harassing coach. How are harassing coaches characterised by their victims, that is, the athletes themselves? Do they demonstrate specific kinds of behaviours? One purpose of this article is to address…

  10. Instructional Coaching and Emotional Intelligence

    Science.gov (United States)

    Avant, Rue Celia

    2012-01-01

    School site-based instructional coaching is a form of job-embedded professional development for teachers and an element of school reform. Coaches are hired based upon their pedagogical knowledge, content expertise, prior teaching experience, and "people skills." They are adept at handling a variety of social interactions at school sites,…

  11. Sports Psychology and the Coach.

    Science.gov (United States)

    Cohen, Greta L., Ed.

    This monograph documents the speeches presented at the 1988 Symposium on Sports Psychology and the Coach. Presentations ranged from empirical research studies to anecdotal methodologies for coping with problems of anxiety. The following presentations are included: (1) "The Coach as Psychologist: When and How" (Robert Rotella); (2) "Psychology for…

  12. Workplace coaching: Processes and effects

    NARCIS (Netherlands)

    Theeboom, T.

    2016-01-01

    Coaching, gedefinieerd als ‘een resultaatgericht en systematisch proces waarbij een coach een coachee helpt om zelf-gestelde doelen te behalen en zijn/haar algehele functioneren en welzijn te verbeteren’ (Grant, 2003), wordt steeds vaker ingezet om medewerkers in organisaties te ondersteunen bij hun

  13. An engineered 3D human airway mucosa model based on an SIS scaffold.

    Science.gov (United States)

    Steinke, Maria; Gross, Roy; Walles, Heike; Gangnus, Rainer; Schütze, Karin; Walles, Thorsten

    2014-08-01

    To investigate interrelations of human obligate airway pathogens, such as Bordetella pertussis, and their hosts test systems with high in vitro/in vivo correlation are of urgent need. Using a tissue engineering approach, we generated a 3D test system of the airway mucosa with human tracheobronchial epithelial cells (hTEC) and fibroblasts seeded on a clinically implemented biological scaffold. To investigate if hTEC display tumour-specific characteristics we analysed Raman spectra of hTEC and the adenocarcinoma cell line Calu-3. To establish optimal conditions for infection studies, we treated human native airway mucosa segments with B. pertussis. Samples were processed for morphologic analysis. Whereas our test system consisting of differentiated epithelial cells and migrating fibroblasts shows high in vitro/in vivo correlation, hTEC seeded on the scaffold as monocultures did not resemble the in vivo situation. Differences in Raman spectra of hTEC and Calu-3 were identified in distinct wave number ranges between 720 and 1662 cm(-1) indicating that hTEC do not display tumour-specific characteristics. Infection of native tissue with B. pertussis led to cytoplasmic vacuoles, damaged mitochondria and destroyed epithelial cells. Our test system is suitable for infection studies with human obligate airway pathogens by mimicking the physiological microenvironment of the human airway mucosa. Copyright © 2014 Elsevier Ltd. All rights reserved.

  14. Between coaching and social counselling

    Directory of Open Access Journals (Sweden)

    Toni Vrana

    2012-03-01

    The basic difference between coaching and social counselling lies in a different interpretation of the client' starting situation. Social counselling understands the client' starting situation as problematic and attempts to normalize it, while coaching understands it as normal and attempts to develop it. The key similarity of the two approaches is encour- agement of the clients' own initiative. Coaching needs to be investigated within the field of developmental conceptions, since its focus on results supports, unintentionally, the dominant developmental paradigm. Focusing on solutions in coaching is questionable also within an organization, where its interests may channel the course of clients' search for their own solutions. The counselling doctrine of coaching can gain valuable insights by a reassessment of the concepts of development and normality, a domain in which it is likely to encounter social counselling.

  15. Examination of the Relationship between Coach-Athlete Communication Levels and Perceived Motivational Climate for Volleyball Players

    Science.gov (United States)

    Avci, Kübra Seden; Çepikkurt, Fatma; Kale, Esen Kizildag

    2018-01-01

    The aim of this study was to reveal the relationship between the athlete-coach relationship and the motivational climate created by the coach. In this study, relational survey model was used. The study sample included 96 female volleyball players who are active players at Turkey Women Volleyball 3rd League. "The Coach-Athlete Relationship…

  16. Mirror-Imaged Rapid Prototype Skull Model and Pre-Molded Synthetic Scaffold to Achieve Optimal Orbital Cavity Reconstruction.

    Science.gov (United States)

    Park, Sung Woo; Choi, Jong Woo; Koh, Kyung S; Oh, Tae Suk

    2015-08-01

    Reconstruction of traumatic orbital wall defects has evolved to restore the original complex anatomy with the rapidly growing use of computer-aided design and prototyping. This study evaluated a mirror-imaged rapid prototype skull model and a pre-molded synthetic scaffold for traumatic orbital wall reconstruction. A single-center retrospective review was performed of patients who underwent orbital wall reconstruction after trauma from 2012 to 2014. Patients were included by admission through the emergency department after facial trauma or by a tertiary referral for post-traumatic orbital deformity. Three-dimensional (3D) computed tomogram-based mirror-imaged reconstruction images of the orbit and an individually manufactured rapid prototype skull model by a 3D printing technique were obtained for each case. Synthetic scaffolds were anatomically pre-molded using the skull model as guide and inserted at the individual orbital defect. Postoperative complications were assessed and 3D volumetric measurements of the orbital cavity were performed. Paired samples t test was used for statistical analysis. One hundred four patients with immediate orbital defect reconstructions and 23 post-traumatic orbital deformity reconstructions were included in this study. All reconstructions were successful without immediate postoperative complications, although there were 10 cases with mild enophthalmos and 2 cases with persistent diplopia. Reoperations were performed for 2 cases of persistent diplopia and secondary touchup procedures were performed to contour soft tissue in 4 cases. Postoperative volumetric measurement of the orbital cavity showed nonsignificant volume differences between the damaged orbit and the reconstructed orbit (21.35 ± 1.93 vs 20.93 ± 2.07 cm(2); P = .98). This protocol was extended to severe cases in which more than 40% of the orbital frame was lost and combined with extensive soft tissue defects. Traumatic orbital reconstruction can be optimized and

  17. Model-Based Optimization of Scaffold Geometry and Operating Conditions of Radial Flow Packed-Bed Bioreactors for Therapeutic Applications

    Directory of Open Access Journals (Sweden)

    Danilo Donato

    2014-01-01

    Full Text Available Radial flow perfusion of cell-seeded hollow cylindrical porous scaffolds may overcome the transport limitations of pure diffusion and direct axial perfusion in the realization of bioengineered substitutes of failing or missing tissues. Little has been reported on the optimization criteria of such bioreactors. A steady-state model was developed, combining convective and dispersive transport of dissolved oxygen with Michaelis-Menten cellular consumption kinetics. Dimensional analysis was used to combine more effectively geometric and operational variables in the dimensionless groups determining bioreactor performance. The effectiveness of cell oxygenation was expressed in terms of non-hypoxic fractional construct volume. The model permits the optimization of the geometry of hollow cylindrical constructs, and direction and magnitude of perfusion flow, to ensure cell oxygenation and culture at controlled oxygen concentration profiles. This may help engineer tissues suitable for therapeutic and drug screening purposes.

  18. Mesenchymal Stem Cells in Oriented PLGA/ACECM Composite Scaffolds Enhance Structure-Specific Regeneration of Hyaline Cartilage in a Rabbit Model

    Directory of Open Access Journals (Sweden)

    Weimin Guo

    2018-01-01

    Full Text Available Articular cartilage lacks a blood supply and nerves. Hence, articular cartilage regeneration remains a major challenge in orthopedics. Decellularized extracellular matrix- (ECM- based strategies have recently received particular attention. The structure of native cartilage exhibits complex zonal heterogeneity. Specifically, the development of a tissue-engineered scaffold mimicking the aligned structure of native cartilage would be of great utility in terms of cartilage regeneration. Previously, we fabricated oriented PLGA/ACECM (natural, nanofibrous, articular cartilage ECM composite scaffolds. In vitro, we found that the scaffolds not only guided seeded cells to proliferate in an aligned manner but also exhibited high biomechanical strength. To detect whether oriented cartilage regeneration was possible in vivo, we used mesenchymal stem cell (MSC/scaffold constructs to repair cartilage defects. The results showed that cartilage defects could be completely regenerated. Histologically, these became filled with hyaline cartilage and subchondral bone. Moreover, the aligned structure of cartilage was regenerated and was similar to that of native tissue. In conclusion, the MSC/scaffold constructs enhanced the structure-specific regeneration of hyaline cartilage in a rabbit model and may be a promising treatment strategy for the repair of human cartilage defects.

  19. Bioresorbable Scaffolds.

    Science.gov (United States)

    Panaich, Sidakpal; Schreiber, Theodore; Grines, Cindy

    2014-08-01

    Percutaneous coronary intervention (PCI) has undergone major advances including the evolution in stent technology, from bare metal stents (BMS), to their drug eluting counterparts, to the development of bioresorbable scaffolds (BRS). The primary notion of BRS was to facilitate complete vascular healing and restore normal endothelial function following the resorption of stent scaffold while providing equivalent mechanical properties of a metallic drug eluting stents (DES) in the earlier stages. BRS provide attractive physiologic advancements over the existing DES and have shown promising results in initial clinical studies albeit with small sample sizes. Their use has been primarily restricted to patients recruited in clinical trials with limited real-world applicability. Thus, data from larger randomised control trials is awaited. The major objective of this article is to review the evidence on BRS and identify their clinical applicability in current interventional practice.

  20. IL COACHING STRATEGICO-LINGUISTICO : VERSO UNA SCIENZA DEL CAMBIAMENTO ?

    OpenAIRE

    Lureau, Maxence

    2014-01-01

    We make the most of two concrete experiences of coaching, the first with a linguistic dominance, the second with a psychological dominance, and we try to develop a model of CSL ( Coaching Strategico -Linguistic Programming) .After a brief introduction where we emphasize that this research is not exhaustive but is constantly evolving , we present an overview of psychological approaches : ancient approaches , psychoanalytic , cognitive-behavioral , humanistic , neurolinguistic , transactional a...

  1. Mathematical model for predicting topographical properties of poly (ε-caprolactone) melt electrospun scaffolds including the effects of temperature and linear transitional speed

    International Nuclear Information System (INIS)

    Ko, Junghyuk; Mohtaram, Nima Khadem; Willerth, Stephanie M; Jun, Martin B G; Lee, Patrick C

    2015-01-01

    Melt electrospinning can be used to fabricate various fibrous biomaterial scaffolds with a range of mechanical properties and varying topographical properties for different applications such as tissue scaffold and filtration and etc, making it a powerful technique. Engineering the topography of such electrospun microfibers can be easily done by tuning the operational parameters of this process. Recent experimental studies have shown promising results for fabricating various topographies, but there is no body of work that focuses on using mathematical models of this technique to further understand the effect of operational parameters on these properties of microfiber scaffolds. In this study, we developed a novel mathematical model using numerical simulations to demonstrate the effect of temperature, feed rate and flow rate on controlling topographical properties such as fiber diameter of these spun fibrous scaffolds. These promising modelling results are also compared to our previous and current experimental results. Overall, we show that our novel mathematical model can predict the topographical properties affected by key operational parameters such as change in temperature, flow rate and feed rate, and this model could serve as a promising strategy for the controlling of topographical properties of such structures for different applications. (paper)

  2. Multi-material poly(lactic acid) scaffold fabricated via fused deposition modeling and direct hydroxyapatite injection as spacers in laminoplasty

    Science.gov (United States)

    Syuhada, Ghifari; Ramahdita, Ghiska; Rahyussalim, A. J.; Whulanza, Yudan

    2018-02-01

    Nowadays, additive manufacturing method has been used extensively to realize any product with specific attributes rather than the conventional subtractive manufacturing method. For instance, the additive manufacturing has enable us to construct a product layer-by-layer by successively depositing several materials in one session and one platform. This paper studied the properties of a 3D printed scaffold fabricated through Poly(Lactic-acid) (PLA) deposition modelling in combination with injectable hydroxyapatite (HA)/alginate as cell carrier. The scaffold was designed to serve as a spacer in cervical laminoplasty. Therefore, a series of test were conducted to elaborate the mechanical property, porosity and in-vitro toxicity testing. The results showed that the method is reliable to fabricate the scaffold as desired although the toxicity test needs more confirmation.

  3. Inhibition of COX1/2 alters the host response and reduces ECM scaffold mediated constructive tissue remodeling in a rodent model of skeletal muscle injury.

    Science.gov (United States)

    Dearth, Christopher L; Slivka, Peter F; Stewart, Scott A; Keane, Timothy J; Tay, Justin K; Londono, Ricardo; Goh, Qingnian; Pizza, Francis X; Badylak, Stephen F

    2016-02-01

    Extracellular matrix (ECM) has been used as a biologic scaffold material to both reinforce the surgical repair of soft tissue and serve as an inductive template to promote a constructive tissue remodeling response. Success of such an approach is dependent on macrophage-mediated degradation and remodeling of the biologic scaffold. Macrophage phenotype during these processes is a predictive factor of the eventual remodeling outcome. ECM scaffolds have been shown to promote an anti-inflammatory or M2-like macrophage phenotype in vitro that includes secretion of downstream products of cycolooxygenases 1 and 2 (COX1/2). The present study investigated the effect of a common COX1/2 inhibitor (Aspirin) on macrophage phenotype and tissue remodeling in a rodent model of ECM scaffold treated skeletal muscle injury. Inhibition of COX1/2 reduced the constructive remodeling response by hindering myogenesis and collagen deposition in the defect area. The inhibited response was correlated with a reduction in M2-like macrophages in the defect area. The effects of Aspirin on macrophage phenotype were corroborated using an established in vitro macrophage model which showed a reduction in both ECM induced prostaglandin secretion and expression of a marker of M2-like macrophages (CD206). These results raise questions regarding the common peri-surgical administration of COX1/2 inhibitors when biologic scaffold materials are used to facilitate muscle repair/regeneration. COX1/2 inhibitors such as nonsteroidal anti-inflammatory drugs (NSAIDs) are routinely administered post-surgically for analgesic purposes. While COX1/2 inhibitors are important in pain management, they have also been shown to delay or diminish the healing process, which calls to question their clinical use for treating musculotendinous injuries. The present study aimed to investigate the influence of a common NSAID, Aspirin, on the constructive remodeling response mediated by an ECM scaffold (UBM) in a rat skeletal

  4. An attachment theory perspective in the examination of relational processes associated with coach-athlete dyads.

    Science.gov (United States)

    Davis, Louise; Jowett, Sophia; Lafrenière, Marc-André K

    2013-04-01

    The aim of the current study was to examine actor and partner effects of (a) athletes' and coaches' attachment styles (avoidant and anxious) on the quality of the coach-athlete relationship, and (b) athletes' and coaches' quality of the coach-athlete relationship on relationship satisfaction employing the actor-partner interdependence model (Kenny, Kashy, & Cook, 2006). Coaches (N = 107) and athletes (N = 107) completed a questionnaire related to attachment styles, relationship quality, and relationship satisfaction. Structural equation model analyses revealed (a) actor effects for coaches' and athletes' avoidant attachment styles on their own perception of relationship quality and coaches' and athletes' perception of relationship quality on their own perception of relationship satisfaction, and (b) partner effects for athletes' avoidant attachment style on coaches' perceptions of relationship quality and for coaches' perceptions of relationship quality on athletes' perceptions of relationship satisfaction. The findings highlight that attachments styles can help us understand the processes involved in the formation and maintenance of quality relational bonds between coaches and athletes.

  5. Examination of the Relationship between Coaching Efficacy and Conflict Management Style in Soccer Coaches

    Science.gov (United States)

    Balyan, Melih

    2018-01-01

    The purpose of the present study was to examine the relationship between coaching efficacy and conflict management style of the soccer coaches. The sample included 224 male soccer coaches ranging in coaching experience from 2 to 15 years. The Coaching Efficacy Scale and The Rahim Organizational Conflict Inventory were used to measure coaching…

  6. Understanding How Ontario High School Teacher-Coaches Learn to Coach

    Science.gov (United States)

    Winchester, Geoff; Culver, Diane; Camiré, Martin

    2013-01-01

    Background: There are approximately 52,000 teacher-coaches coaching 750,000 high school student-athletes in Canada. Despite this large population, Canadian high school teacher-coaches remain relatively unstudied. High school coaches in Canada are often asked to coach sports with which they are unfamiliar, and because they are not required to…

  7. In Pursuit of Becoming a Senior Coach: The Learning Culture for Australian Football League Coaches

    Science.gov (United States)

    Mallett, Clifford J.; Rossi, Tony; Rynne, Steven B.; Tinning, Richard

    2016-01-01

    Background and Purpose: Given the turbulent and highly contested environment in which professional coaches work, a prime concern to coach developers is how coaches learn their craft. Understanding the learning and development of senior coaches (SCs) and assistant coaches (ACs) in the Australian Football League (AFL--the peak organisation for…

  8. Mellemlederes erfaringer med coaching af medarbejdere

    DEFF Research Database (Denmark)

    Spaten, Ole Michael

    2012-01-01

    15 middle managers from a major Danish, nationwide company were trained to coach by two coaching psychologists through theoretical presentations, individual coaching and peer coaching sessions with direct supervision (learning-by-doing, (see Spaten, 2011b)). Until now there has been conducted...

  9. Danish health professionals' experiences of being coached

    DEFF Research Database (Denmark)

    Ammentorp, Jette; Jensen, Hanne Irene; Uhrenfeldt, Lisbeth

    2013-01-01

    In recent years, coaching, as a supplement to professional development, has received increased attention, especially in nursing. Still, only little is known about how health professionals experience participating in coaching sessions. The purpose of this pilot study was to describe and analyze he...... health professionals' experiences from coaching-what coaching meant to them and how it influenced different aspects of their lives....

  10. A Coach's Code of Conduct. Position Statement

    Science.gov (United States)

    Lyman, Linda; Ewing, Marty; Martino, Nan

    2009-01-01

    Coaches exert a profound impact on our youths; therefore, society sets high expectations for them. As such, whether coaches are compensated or work solely as volunteers, they are responsible for executing coaching as a professional. If we are to continue to enhance the cultural perceptions of coaching, we must strive to develop and master the…

  11. Developing Female Coaches: Strategies from Women Themselves

    Science.gov (United States)

    Norman, Leanne

    2012-01-01

    The purpose of this study was to explore strategies for the development of aspiring female coaches based on the ideas of existing high-performance female coaches. Drawing on semi-structured interviews with national-level female coaches in the United Kingdom, four recurrent ideas for developing female coaches in a male-dominated profession emerged.…

  12. Coaching af ph.d.-studerende

    DEFF Research Database (Denmark)

    Godskesen, Mirjam Irene

    Rapporten danner grundlag for at etablere et koncept for ph.d.-coaching. Erfaringerne fra et 2-årigt projekt om ph.d.-coaching i SCKK regi beskrives. De centrale temaer er tilrettelæggelse af den individuelle coaching, typiske temaer i coachingen og arbejdsdeling mellem coach og vejleder. Der er...

  13. Wat is coaching en werkt het?

    NARCIS (Netherlands)

    Theeboom, T.; Beersma, B.; van Vianen, A.

    2013-01-01

    Coaching is in de afgelopen twee decennia explosief gegroeid als vakgebied. De International Coach Federation schat dat er jaarlijks zo'n twee miljard dollar omgaat in de wereldwijde coachingsindustrie (International Coach Federation, 2012). In Nederland zijn er zo'n 40.000 coaches werkzaam (Schats,

  14. Pedagogical Experience of Teaching Financial Coaching

    OpenAIRE

    Lucy M. Delgadillo

    2015-01-01

    This study reports on the pedagogical experience of teaching a financial coaching course to personal and family finance undergraduate students at XXXX State University. The paper describes the conceptualization of the class, including theoretical frameworks, ethical considerations, practitioner’s models, learning objectives, and competencies. The assessment of the course provided data used by the instructor to refine and adjust future course content and assignments. Quantitative data was coll...

  15. A cross-linking model for estimating Young's modulus of artificial bone tissue grown on carbon nanotube scaffold.

    Science.gov (United States)

    Saffar, Kaveh PourAkbar; Arshi, Ahmad Reza; JamilPour, Nima; Najafi, Ahmad Raeisi; Rouhi, Gholamreza; Sudak, Les

    2010-08-01

    Carbon nanotubes (CNTs) provide a suitable environment for growth and proliferation of bone cells. The elastic properties exhibited by CNTs can enhance mechanical characteristics of bone mineral phase, hydroxyapatite (HAp), precipitated on such a scaffold. In this article, a simplified model for estimating the axial Young's modulus of a representative volume element (RVE) of CNT-HAp composite is presented. The model is based on the idea of HAp formation on functionalized sites on CNTs as cross-links between HAp matrix and CNT. Modeling results show that the reinforcement role contributed by CNT in the RVE causes a significant increase in the Young's modulus of the composite material which is a direct consequence of transferring stresses from the HAp matrix to the CNT through the cross-links. Similar conclusions may be suggested regarding the improvement of overall mechanical properties of the material. The prediction made by the model lies reasonably well within the limits proposed by conventional Rule-of-Mixtures, and sliding below Voigt's model. The Young's modulus predicted by the model lies adjacent to the Hashin-Shtrikman upper bound as a function of the RVE length (or equivalently CNT aspect ratio). The model simulation indicates that an increase in the CNT aspect ratio and/or number of cross-links in the RVE, results in the prediction to move closer to the estimation made by Voigt as the assumption of perfect bonding between composite phases is approached. (c) 2010 Wiley Periodicals, Inc.

  16. The future of coaching as a profession

    DEFF Research Database (Denmark)

    Lane, David A.; Stelter, Reinhard; Rostron, Sunny Stout

    2010-01-01

    The popularity of coaching worldwide is seen in an array of international coaching conferences, burgeoning coach training and education, and emergent professional bodies for coach practitioners. This escalating demand has motivated coach practitioners, consumers and educators of coaching...... to advocate the professionalisation of the industry to ensure the quality of coaching services. Coaching as a form of practice is now widely adopted, although recognition as a profession remains contentious and patchy with different jurisdictions taking contrary views on its legitimacy. A growing awareness...... of the potential benefits to the industry of professional status has led to participation in international dialogues, such the Global Convention on Coaching (GCC) and the International Coaching Research Forum (ICRF). The GCC was established with the explicit aim of promoting consultation and exploration of areas...

  17. Urethral reconstruction with a 3D porous bacterial cellulose scaffold seeded with lingual keratinocytes in a rabbit model

    International Nuclear Information System (INIS)

    Huang, Jian-Wen; Lv, Xiang-Guo; Song, Lu-Jie; Feng, Chao; Xie, Min-Kai; Li, Chao; Li, Hong-Bin; Wang, Ji-Hong; Zhu, Wei-Dong; Xu, Yue-Min; Li, Zhe; Chen, Shi-Yan; Wang, Hua-Ping

    2015-01-01

    The goal of this study was to evaluate the effects of urethral reconstruction with a three-dimensional (3D) porous bacterial cellulose (BC) scaffold seeded with lingual keratinocytes in a rabbit model. A novel 3D porous BC scaffold was prepared by gelatin sponge interfering in the BC fermentation process. Rabbit lingual keratinocytes were isolated, expanded, and seeded onto 3D porous BC. BC alone (group 1, N  =  10), 3D porous BC alone (group 2, N  =  10), and 3D porous BC seeded with lingual keratinocytes (group 3, N  =  10) were used to repair rabbit ventral urethral defects (2.0   ×   0.8 cm). Scanning electron microscopy revealed that BC consisted of a compact laminate while 3D porous BC was composed of a porous sheet buttressed by a dense outer layer. The average pore diameter and porosity of the 3D porous BC were 4.23   ±   1.14 μm and 67.00   ±   6.80%, respectively. At 3 months postoperatively, macroscopic examinations and retrograde urethrograms of urethras revealed that all urethras maintained wide calibers in group 3. Strictures were found in all rabbits in groups 1 and 2. Histologically, at 1 month postoperatively, intact epithelium occurred in group 3, and discontinued epithelium was found in groups 1 and 2. However, groups 2 and 3 exhibited similar epithelial regeneration, which was superior to that of group 1 at 3 months (p  <  0.05). Comparisons of smooth muscle content and endothelia density among the three groups revealed a significant increase at each time point (p  <  0.05). Our results demonstrated that 3D porous BC seeded with lingual keratinocytes enhanced urethral tissue regeneration. 3D porous BC could potentially be used as an optimized scaffold for urethral reconstruction. (paper)

  18. Coaching for creativity, imagination, and innovation

    OpenAIRE

    Jagiello, Jolanta

    2006-01-01

    The Chartered Institute of Personal Development (CIPD) has acknowledged the rise of coaching, and has developed a set of standards to guide the coaching profession. The aim of this discussion paper is to explore the potential of creative coaching. What it could offer professional practitioners, and to investigate what professionals understand to be the components of creative coaching. In order, to reach conclusions and recommendations on how the professional coach can practically engage with ...

  19. Measuring coaching efficacy : a theoretical review

    OpenAIRE

    Pesca, Andréa Duarte

    2018-01-01

    The definition of the coaching efficacy construct has recently been incorporated in sports literature and was based on the social cognitive approach more specifically, on the self-efficacy construct. The coaching efficacy phenomenon refers to the confidence development in coaches and their capacities to influence the learning and performance of their athletes. Coaching efficacy is an important variable within a range of personal characteristics that involves coaches' behaviors. The purpose of...

  20. Doped tricalcium phosphate scaffolds by thermal decomposition of naphthalene: Mechanical properties and in vivo osteogenesis in a rabbit femur model.

    Science.gov (United States)

    Ke, Dongxu; Dernell, William; Bandyopadhyay, Amit; Bose, Susmita

    2015-11-01

    Tricalcium phosphate (TCP) is a bioceramic that is widely used in orthopedic and dental applications. TCP structures show excellent biocompatibility as well as biodegradability. In this study, porous β-TCP scaffolds were prepared by thermal decomposition of naphthalene. Scaffolds with 57.64% ± 3.54% density and a maximum pore size around 100 μm were fabricated via removing 30% naphthalene at 1150°C. The compressive strength for these scaffolds was 32.85 ± 1.41 MPa. Furthermore, by mixing 1 wt % SrO and 0.5 wt % SiO2 , pore interconnectivity improved, but the compressive strength decreased to 22.40 ± 2.70 MPa. However, after addition of polycaprolactone coating layers, the compressive strength of doped scaffolds increased to 29.57 ± 3.77 MPa. Porous scaffolds were implanted in rabbit femur defects to evaluate their biological property. The addition of dopants triggered osteoinduction by enhancing osteoid formation, osteocalcin expression, and bone regeneration, especially at the interface of the scaffold and host bone. This study showed processing flexibility to make interconnected porous scaffolds with different pore size and volume fraction porosity, while maintaining high compressive mechanical strength and excellent bioactivity. Results show that SrO/SiO2 -doped porous TCP scaffolds have excellent potential to be used in bone tissue engineering applications. © 2014 Wiley Periodicals, Inc.

  1. Not teaching, but coaching creating a self-development culture in a classroom

    Directory of Open Access Journals (Sweden)

    MONIKA GROCHALSKA

    2014-12-01

    Full Text Available Nowadays we hear a lot about coaching, but what does coaching really mean? Why does it matter? What is more, the notion of edu-coaching has also emerged in recent years, and this idea seems to be gaining popularity. But can coaching replace traditional classroom education? To what extent could it be useful at school? In the first part of this article I would like to define what coaching is, how it is different from mentoring and how it can be used to support pupils and teachers at personal, team and whole school levels. Undoubtedly, there are obvious benefits of coaching for students, staff, school as well as coaches. There are three core skills of coaching: listening, questioning and reviewing. To be a good coach, a teacher should understand how to be a good listener and how to ask proper coaching questions. They should ask questions that help them and the coached/the pupil to review, reflect and to clarify matters throughout the lesson. There are some coaching tools that can be used at various stages of the coaching process at school, including the balance wheel, rating scale, bisociation, viewpoints and motivational record. A teacher can successfully use coaching on the basis of the GROW (Goal, Reality, Options and Will model. It can support the teacher’s development and his practice as a coach. As indicated in the on-line articles for teachers, starting professional training is also worthwhile. During the training, a teacher can learn how to develop classroom practice that supports growth through the use of high level listening, questioning, reflecting and summarising. Most of professional training programs contain the following elements: - using active listening and open questions to tackle issues such as pupil behaviour, - reaching their full potential by putting in place realistic goals and plans to achieve them, - taking responsibility for their own progress through change, - building rapports that can turn previously difficult

  2. Developmental Scaffolding

    DEFF Research Database (Denmark)

    Giorgi, Franco; Bruni, Luis Emilio

    2015-01-01

    . As this boundary is gradually defined during development, cells enter into new functional relationships, while, at the same time, are relieved from their physical determinism. The resulting constraints can thus become the driving forces that upgrade embryonic scaffolding from the simple molecular signalling...... to the complexity of sign recognition proper of a cellular community. In this semiotic perspective, the apparent goal directness of any developmental strategy should no longer be accounted for by a predetermined genetic program, but by the gradual definition of the relationships selected amongst the ones...

  3. Team Interaction Coaching with Educators of Adolescents Who Are Deaf-Blind: Applying the Diagnostic Intervention Model

    Science.gov (United States)

    Janssen, Marleen J.; Riksen-Walraven, J. Marianne; Van Dijk, Jan P. M.; Ruijssenaars, Wied A. J. J. M.; Vlaskamp, Carla

    2007-01-01

    In an earlier publication, we presented the Diagnostic Intervention Model, which can be used as a guide in the design and conduct of interventions to foster harmonious interactions between children who are deaf-blind and their educators. This article demonstrates the use of the model in everyday practice and the effects of its application in two…

  4. Team interaction coaching with educators of adolescents who are deaf-blind : Applying the Diagnostic Intervention Model

    NARCIS (Netherlands)

    Janssen, Marleen J.; Riksen-Walraven, J. Marianne; Van Dijk, Jan P. A.; Ruijssenaars, Wied A. J. J. M.; Vlaskarnp, Carla

    2007-01-01

    In an earlier publication, we presented the Diagnostic Intervention Model, which can be used as a guide in the design and conduct of interventions to foster harmonious interactions between children who are deaf-blind and their educators. This article demonstrates the use of the model in everyday

  5. Biphasic calcium phosphate nano-composite scaffolds reinforced with bioglass provide a synthetic alternative to autografts in a canine tibiofibula defect model.

    Science.gov (United States)

    Tang, Dezhi; Xu, Guohua; Yang, Zhou; Holz, Jonathan; Ye, Xiaojian; Cai, Shu; Yuan, Wen; Wang, Yongjun

    2014-01-01

    Bone grafting is commonly used to repair bone defects. As the porosity of the graft scaffold increases, bone formation increases, but the strength decreases. Early attempts to engineer materials were not able to resolve this problem. In recent years, nanomaterials have demonstrated the unique ability to improve the material strength and toughness while stimulating new bone formation. In our previous studies, we synthesized a nano-scale material by reinforcing a porous β-tricalcium phosphate (β-TCP) ceramic scaffold with Na2O-MgO-P2O5-CaO bioglass (β-TCP/BG). However, the in vivo effects of the β-TCP/BG scaffold on bone repair remain unknown. We investigated the efficacy of β-TCP/BG scaffolds compared to autografts in a canine tibiofibula defect model. The tibiofibula defects were created in the right legs of 12 dogs, which were randomly assigned to either the scaffold group or the autograft group (six dogs per group). Radiographic evaluation was performed at 0, 4, 8, and 12 weeks post-surgery. The involved tibias were extracted at 12 weeks and were tested to failure via a three-point bending. After the biomechanical analysis, specimens were subsequently processed for scanning electron microscopy analysis and histological evaluations. Radiographic evaluation at 12 weeks post-operation revealed many newly formed osseous calluses and bony unions in both groups. Both the maximum force and break force in the scaffold group (n = 6) were comparable to those in the autograft group (n = 6, P > 0.05), suggesting that the tissue-engineered bone repair achieved similar biomechanical properties to autograft bone repair. At 12 weeks post-operation, obvious new bone and blood vessel formations were observed in the artificial bone of the experimental group. The results demonstrated that new bone formation and high bone strength were achieved in the β-TCP/BG scaffold group, and suggested that the β-TCP/BG scaffold could be used as a synthetic alternative to autografts for

  6. A Pre-Service Teacher Training Model with Instructional Technology Graduate Students as Peer Coaches to Elementary Pre-Service Teachers

    Science.gov (United States)

    Slagter van Tryon, Patricia J.; Schwartz, Catherine Stein

    2012-01-01

    This paper describes a peer coaching collaboration between graduate students in a Master's program in Instructional Technology and undergraduate pre-service teachers enrolled in an elementary mathematics methods course. Integrated as a major project in a graduate level K-12 technology integration course, the Instructional Technology students…

  7. The Evolution of Student-Coach's Pedagogical Content Knowledge in a Combined Use of Sport Education and the Step-Game-Approach Model

    Science.gov (United States)

    Araújo, Rui Manuel Flores; Hastie, Peter Andrew; de Assunção Bessa Pereira, Cristiana Helena; Mesquita, Isabel Maria Ribeiro

    2017-01-01

    Background: One of the essential elements within Sport Education is the inclusion of student roles and responsibilities. While previous research has examined students' performance in officiating tasks, the examination of student-coaches' pedagogical content knowledge (PCK) within peer-assisted tasks of Sport Education has been scarce. Indeed, the…

  8. Identifying competencies of boxing coaches

    Directory of Open Access Journals (Sweden)

    Ioannis Tasiopoulos

    2014-10-01

    Full Text Available The purpose of this study was to find out the management skills required by boxing coaches to administrate their clubs. For the purposes of this study a scale was constructed which was answered by 98 boxing coaches. Explanatory factor analysis revealed seven factors: Communication-public relations (5 items, event management (4 items, management techniques (4 items, new technologies (4 items, prevention-safety (2 items, sport (5 items and sports facilities (2 items. The Cronbach of the scale was 0.85. The five competencies that rated by the coaches were: Supervisors of the area of training, maintaining excellent communication with athletes, using new technologies (e-mail, internet, handling disciplinary matters, accidents, complaints and reports on some sporting games and promoted harmony among athletes. We concluded that boxing coaches understand that the competencies required for meeting their obligations, were related to sports, prevention, safety and communications-public relations.

  9. Health coaching: a concept analysis.

    Science.gov (United States)

    Olsen, Jeanette M

    2014-01-01

    Variations in the use of health coaching documented in the literature indicate a lack of conceptual clarity. The purpose of this article was to clarify the meaning of health coaching and propose an operational definition. Seven attributes were identified and used to propose an operational definition of health coaching as a goal-oriented, client-centered partnership that is health-focused and occurs through a process of client enlightenment and empowerment. This operational definition and the proposed empirical measures of each attribute can be used to validate the presence of health coaching, develop theory-based applications, and consistently test the effectiveness of interventions using this concept. © 2013 Wiley Periodicals, Inc.

  10. Scaffold-cell bone engineering in a validated preclinical animal model: precursors vs differentiated cell source.

    Science.gov (United States)

    Berner, A; Henkel, J; Woodruff, M A; Saifzadeh, S; Kirby, G; Zaiss, S; Gohlke, J; Reichert, J C; Nerlich, M; Schuetz, M A; Hutmacher, D W

    2017-07-01

    The properties of osteoblasts (OBs) isolated from the axial skeleton (tOBs) differ from OBs of the orofacial skeleton (mOBs) due to the different embryological origins of the bones. The aim of the study was to assess and compare the regenerative potential of allogenic bone marrow-derived mesenchymal progenitor cells with allogenic tOBs and allogenic mOBs in combination with a mPCL-TCP scaffold in critical-sized segmental bone defects in sheep tibiae. After 6 months, the tibiae were explanted and underwent biomechanical testing, micro-computed tomography (microCT) and histological and immunohistochemical analyses. Allogenic MPCs demonstrated a trend towards a better outcome in biomechanical testing and the mean values of newly formed bone. Biomechanical, microCT and histological analysis showed no significant differences in the bone regeneration potential of tOBs and mOBs in our in vitro study, as well as in the bone regeneration potential of different cell types in vivo. Copyright © 2015 John Wiley & Sons, Ltd. Copyright © 2015 John Wiley & Sons, Ltd.

  11. Strategies for Building Peer Surgical Coaching Relationships.

    Science.gov (United States)

    Beasley, Heather L; Ghousseini, Hala N; Wiegmann, Douglas A; Brys, Nicole A; Pavuluri Quamme, Sudha R; Greenberg, Caprice C

    2017-04-19

    Peer surgical coaching is a promising approach for continuing professional development. However, scant guidance is available for surgeons seeking to develop peer-coaching skills. Executive coaching research suggests that effective coaches first establish a positive relationship with their coachees by aligning role and process expectations, establishing rapport, and cultivating mutual trust. To identify the strategies used by peer surgical coaches to develop effective peer-coaching relationships with their coachees. Drawing on executive coaching literature, a 3-part framework was developed to examine the strategies peer surgical coaches (n = 8) used to initially cultivate a relationship with their coachees (n = 11). Eleven introductory 1-hour meetings between coaching pairs participating in a statewide surgical coaching program were audiorecorded, transcribed, and coded on the basis of 3 relationship-building components. Once coded, thematic analysis was used to organize coded strategies into thematic categories and subcategories. Data were collected from October 10, 2014, to March 20, 2015. Data analysis took place from May 26, 2015, to July 20, 2016. Strategies and potentially counterproductive activities for building peer-coaching relationships in the surgical context to inform the future training of surgical coaches. Coaches used concrete strategies to align role and process expectations about the coaching process, to establish rapport, and to cultivate mutual trust with their coachees during introductory meetings. Potential coaching pitfalls are identified that could interfere with each of the 3 relationship-building components. Peer-nominated surgical coaches were provided with training on abstract concepts that underlie effective coaching practices in other fields. By identifying the strategies used by peer surgical coaches to operationalize these concepts, empirically based strategies to inform other surgical coaching programs are provided.

  12. The Manager Coaching in Management

    OpenAIRE

    Giovanna Díaz Cardozo

    2016-01-01

    The paper aims to make contributions to the Manager Coaching, optimization of management in all areas in which it develops and operates the human being, in that sense, devotes part of its content to the figure of the manager, and Coaching as a leader, manager, director and conductor of processes, identified as largely responsible, you must have knowledge and experience in such functions, in addition to meeting a set of skills that will allow you to efficiently fulfill their activities. It rel...

  13. SPORT NUTRITION KNOWLEDGE OF COACHES

    OpenAIRE

    Ivan Vasiljević; Danilo Bojanić; Jovica Petković; Aldijana Muratović

    2014-01-01

    Introduction: Decades of research support the theory that when there are sports competitions the question of what to eat and drink in order to enhance sport performance. Nutrition is one of the most important factors in achieving top performance athletes. According to most studies conducted in the world's top athletes receive information from their coaches when it comes to sports nutrition, especially of the coaches involved in fitness training. (Burns, Schiller, Merrick & Wolf, 2004).The aim...

  14. "It's about Improving My Practice": The Learner Experience of Real-Time Coaching

    Science.gov (United States)

    Sharplin, Erica J.; Stahl, Garth; Kehrwald, Ben

    2016-01-01

    This article reports on pre-service teachers' experience of the Real-Time Coaching model, an innovative technology-based approach to teacher training. The Real-Time Coaching model uses multiple feedback cycles via wireless technology to develop within pre-service teachers the specific skills and mindset toward continual improvement. Results of…

  15. Executive coaching experiences: A systems psychodynamic perspective

    Directory of Open Access Journals (Sweden)

    Frans Cilliers

    2005-10-01

    Full Text Available The Integrated Executive Experiential Learning Coaching model was applied in an information technology organisation. The aim of the research was to analyse and interpret the experiences of seven executives in the form of written essays from the systems psychodynamic perspective. The manifesting themes were, experiential learning facilitates the working through of defences; interdependency facilitates taking responsibility for the self; flight reactions inhibit owning and learning; transcending defences is needed to authorise the self in role; the difficulty of moving from the paranoid-schizoid to the depressive position and valuing all parts of the self; and containment facilitates self-authorisation. Recommendations towards more effective executive coaching are presented. Opsomming Die “Integrated Executive Experiential Learning Coaching model�? is toegepas in ’n inligtings tegnologie organisasie. Die doel van die navorsing was om die ervaring van sewe uitvoerende beamptes in opstel-formaat te analiseer en te interpreteer vanuit die stelsel psigodinamiese benadering. Die manifesterende temas was, ervaringeleer fasiliteer die deurwerk van verdedigingsmeganismes; interafhanklikheid fasiliteer die neem van selfverantwoordelikheid; vlug reaksies inhibeer eienaarskap en leer; die transendering van verdedigings is nodig vir self outorisering; die moeisaamheid van beweeg vanaf die paranoide-skisiode na die depressiewe posisie en waardering van alle gedeeltes van die self; en behouering fasiliteer self-outoriteit. Aanbevelings vir meer effektiewe uitvoerende afrigting is aangebied.

  16. Using Hydroxyapatite-Gelatin Scaffold Seeded with Bone Marrow Stromal Cells as a Bone Graft in Animal Model

    Directory of Open Access Journals (Sweden)

    Mahsoumeh Behruzi

    2016-11-01

    Full Text Available Background: Nowadays, composite scaffolds with some desired characteristics have a numerous applications in hard tissue engineering. In present study, the role of composite hydroxyapatite - gelatin was examined in both alone and coated by Bone Marrow Stromal Stem Cells (BMSCs conditions in the process of healing bone defects, reduction of time repair and the immune response of body by laboratory studies (in vitro and in vivo on the skull of adult rats as well. Materials and Methods: In present study, nano-hydroxyapatite powder and gelatin were used to provide nano-hydroxyapatite-gelatin scaffold, BMSCs were isolated by Flushing method. Fifteen adult male Wistar rats weighing 250-200 g were used. Studing groups included bone defect with hydroxyapatite-gelatin scaffold, bone defect with hydroxyapatite-gelatin with BMSCs and bone defects without scaffolding as a controlwhich were examined after a week and a month after surgery. MTT assay was used in order to evaluation of biocompatibility of scaffolds. To confirm the healing progress trend and the presence of inflammatory cells we used hematoxylin-eosin and we used Masson's trichrome staining in order to study of synthesis of collagen fibers. Results: The results of MTT showed that the scaffold has no toxic effects on stromal cells. The first signs of ossification in hydroxyapatite-gelatin with BMSCs cells group, appeared in the first week. However, in the fourth week, ossification was completed and the scaffold remaining was found as embedded islands in the spongy bone tissue. The greatest number of lymphocytes was observed in the experimental group after one week of planting scaffold. Conclusion: it seems that Hydroxyapatite-gelatin scaffold coated with BMSCs cells has a potential role in the healing process of bone and it can be suitable as a therapeutic strategy to repair extensive bone lesions.

  17. Seven domains for leadership mentoring and executive coaching A reflective paper

    Directory of Open Access Journals (Sweden)

    Paul O. Olson

    2014-07-01

    Full Text Available This article discusses how coaching and mentoring can be integrated and work together as systematic tools for leadership development. The author draws on psychotherapy as a parallel for practitioner research and posits five validation hypotheses for coaching and mentoring. Arguably coaching is not sufficient to develop leaders, but a useful toolbox within mentoring. Internal mentors in particular have cultural and industry knowledge of direct relevance to the adept. Seven domains are identified for an integrated framework: Insight from reflection and meta-learning; Working with the whole person; Competence modelling; Deep listening, beyond words; Emotional intelligence; Coaching for results; and Systemic thinking and team development.

  18. The role of three-dimensional pure bovine gelatin scaffolds in tendon healing, modeling, and remodeling: an in vivo investigation with potential clinical value.

    Science.gov (United States)

    Oryan, Ahmad; Sharifi, Pardis; Moshiri, Ali; Silver, Ian A

    2017-09-01

    Large tendon defects involving extensive tissue loss present complex clinical problems. Surgical reconstruction of such injuries is normally performed by transplanting autogenous and allogenous soft tissues that are expected to remodel to mimic a normal tendon. However, the use of grafts has always been associated with significant limitations. Tissue engineering employing artificial scaffolds may provide acceptable alternatives. Gelatin is a hydrolyzed form of collagen that is bioactive, biodegradable, and biocompatible. The present study has investigated the suitability of gelatin scaffold for promoting healing of a large tendon-defect model in rabbits. An experimental model of a large tendon defect was produced by partial excision of the Achilles tendon of the left hind leg in adult rabbits. To standardize and stabilize the length of the tendon defect a modified Kessler core suture was anchored in the sectioned tendon ends. The defects were either left untreated or filled with three-dimensional gelatin scaffold. Before euthanasia 60 days after injury, the progress of healing was evaluated clinically. Samples of healing tendon were harvested at autopsy and evaluated by gross, histopathologic, scanning, and transmission electron microscopy, and by biomechanical testing. The treated animals showed superior weight-bearing and physical activity compared with those untreated, while frequency of peritendinous adhesions around the healing site was reduced. The gelatin scaffold itself was totally degraded and replaced by neo-tendon that morphologically had significantly greater numbers, diameters, density, and maturation of collagen fibrils, fibers, and fiber bundles than untreated tendon scar tissue. It also had mechanically higher ultimate load, yield load, stiffness, maximum stress and elastic modulus, when compared to the untreated tendons. Gelatin scaffold may be a valuable option in surgical reconstruction of large tendon defects.

  19. Scaffolding students’ assignments

    DEFF Research Database (Denmark)

    Slot, Marie Falkesgaard

    2013-01-01

    learning goals) can help students structure their argumentative and communica-tive learning processes, and how various multimodal representations can give more open-ended learning possibilities for collaboration. The article presents a short introduction of the skills for 21st century learning and defines......This article discusses scaffolding in typical student assignments in mother tongue learning materials in upper secondary education in Denmark and the United Kingdom. It has been determined that assignments do not have sufficient scaffolding end features to help pupils understand concepts and build...... objects. The article presents the results of empirical research on tasks given in Danish and British learning materials. This work is based on a further development of my PhD thesis: “Learning materials in the subject of Danish” (Slot 2010). The main focus is how cognitive models (and subsidiary explicit...

  20. Self-assembly of peptide scaffolds in biosilica formation: computer simulations of a coarse-grained model.

    Science.gov (United States)

    Lenoci, Leonardo; Camp, Philip J

    2006-08-09

    The self-assembly of model peptides is studied using Brownian dynamics computer simulations. A coarse-grained, bead-spring model is designed to mimic silaffins, small peptides implicated in the biomineralization of certain silica diatom skeletons and observed to promote the formation of amorphous silica nanospheres in vitro. The primary characteristics of the silaffin are a 15 amino acid hydrophilic backbone and two modified lysine residues near the ends of the backbone carrying long polyamine chains. In the simulations, the model peptides self-assemble to form spherical clusters, networks of strands, or bicontinuous structures, depending on the peptide concentration and effective temperature. The results indicate that over a broad range of volume fractions (0.05-25%) the characteristic structural lengthscales fall in the range 12-45 nm. On this basis, we suggest that self-assembled structures act as either nucleation points or scaffolds for the deposition of 10-100 nm silica-peptide building blocks from which diatom skeletons and synthetic nanospheres are constructed.

  1. Coaching i mange læringsrum

    Directory of Open Access Journals (Sweden)

    Helle Alrø

    2015-12-01

    Full Text Available Coaching in many learning environments. Coaching and coaching skills can be acquired in various ways andin more or less formalized educational settings. This article focuses on a training course at Aalborg University,where students are trained in coaching and in facilitation of coaching. The aim is to shed light on how coa-ching skills can be acquired through a series of theoretical, analytical and practical learning activities in andbetween different learning environments. The article reflects these learning activities from the lecturer’s as wellas from the student’s perspective.

  2. When middel managers are doing employee coaching

    DEFF Research Database (Denmark)

    Spaten, Ole Michael; Flensborg, Winnie

    2013-01-01

    assessed by their employees. Design: The overall study investigated 15 middle managers - from a major Danish nationwide company who were trained to coach by two coaching psychologists through theoretical presentations, individual coaching and peer coaching sessions with direct supervision (learning......-by-doing: Spaten, 2011b) - when they were coaching their 75 employees through an online survey and semi-structured interviews. Methods: Four middle managers and employees were interviewed after the intervention. Thematic analysis was chosen and elicited three main themes: (1) coaching skills; (2) professional...

  3. DAS COACHING FÜR DIE KARRIERE

    OpenAIRE

    Fleseriu Adam; Fleseriu Cristina

    2010-01-01

    Coaching means change and transformation. This is the people`s ability to change their behavior, to rediscover and to create a new identity and new plans for the future. The coaching is divided, at this moment, in three categories: business coaching, executive coaching and live skills coaching. If we are talking about career coaching, we can say that this one is present in all its stages: if the person is choosing the first job, if the person is changing the workplace during the career and if...

  4. Successful Total Meniscus Reconstruction Using a Novel Fiber-Reinforced Scaffold: A 16- and 32-Week Study in an Ovine Model.

    Science.gov (United States)

    Merriam, Aaron R; Patel, Jay M; Culp, Brian M; Gatt, Charles J; Dunn, Michael G

    2015-10-01

    Meniscus injuries in the United States result in an estimated 850,000 surgical procedures each year. Although meniscectomies are the most commonly performed orthopaedic surgery, little advancement has been made in meniscus replacement and regeneration, and there is currently no total meniscus replacement device approved by the Food and Drug Administration. A novel fiber-reinforced meniscus scaffold can be used as a functional total meniscus replacement. Controlled laboratory study. A tyrosine-derived, polymer fiber-reinforced collagen sponge meniscus scaffold was evaluated mechanically (tensile and compressive testing) and histologically after 16 and 32 weeks of implantation in an ovine total meniscectomy model (N = 20; 16 implants plus 4 meniscectomies, divided equally over the 2 time periods). The extent of cartilage damage was also measured on tibial plateaus by use of toluidine blue surface staining and on femoral condyles by use of Mankin scores on histological slides. Scaffolds induced formation of neomeniscus tissue that remained intact and functional, with breaking loads approximating 250 N at both 16 and 32 weeks compared with 552 N for native menisci. Tensile stiffness values (99 and 74 N/mm at 16 and 32 weeks, respectively) were also comparable with those of the native meniscus (147 N/mm). The compressive modulus of the neomeniscus tissue (0.33 MPa at both 16 and 32 weeks) was significantly increased compared with unimplanted (time 0) scaffolds (0.15 MPa). There was histological evidence of extensive tissue ingrowth and extracellular matrix deposition, with immunohistochemical evidence of types I and II collagen. Based on significantly decreased surface damage scores as well as Mankin scores, the scaffold implants provided greater protection of articular cartilage compared with the untreated total meniscectomy. This novel fiber-reinforced meniscus scaffold can act as a functional meniscus replacement, with mechanical properties similar to those of the

  5. The scientific building blocks for business coaching: A literature review

    Directory of Open Access Journals (Sweden)

    Flip Schutte

    2015-03-01

    Full Text Available Orientation: Business coaching is a relatively new approach to leadership development. It is also slowly growing as an academic discipline with only a small number of active researchers and a dearth of published literature reviews.Research purpose: This article is an investigation into the current level of development of the body of knowledge related to business coaching by means of a systematic literature review.Motivation of the study: Previous literature reviews summarised the available published articles. In order to contribute to establishing business coaching as an independent academic discipline, the building blocks for science in the phenomenon under investigation have to be scientifically not only summarised, but also synthesised and explored to ground this new discipline as an academic field of research.Research design, approach and method: A methodological framework has been developed to analyse the information. The data were synthesised according to the following building blocks for science: concepts, definitions, typologies, models, theories and paradigms.Main findings: A total of 84 articles were accessed by the specified search strategy and 36 were analysed according to inclusive and exclusive criteria. Although coaching has not been sufficiently developed as an academic discipline, it is possible to develop a comprehensive definition of coaching, as well as to identify the main models and theories that apply to this field.Practical/managerial implications: This literature review has synthesised and summarised the available data in such a way that it will contribute to the conceptualisation and foundation of business coaching as an academic discipline.Contribution: The building blocks for business coaching as a relatively new and emerging science within the field of business leadership have been defined. This will contribute to the articulation of concepts within this discipline by future researchers and practitioners.

  6. Manufacture of β-TCP/alginate scaffolds through a Fab@home model for application in bone tissue engineering

    International Nuclear Information System (INIS)

    Diogo, G S; Gaspar, V M; Serra, I R; Fradique, R; Correia, I J

    2014-01-01

    The growing need to treat bone-related diseases in an elderly population compels the development of novel bone substitutes to improve patient quality of life. In this context, the advent of affordable and effective rapid prototyping equipment, such as the Fab@home plotter, has contributed to the development of novel scaffolds for bone tissue engineering. In this study, we report for the first time the use of a Fab@home plotter for the production of 3D scaffolds composed by beta-tricalcium phosphate (β-TCP)/alginate hybrid materials. β-TCP/alginate mixtures were used in a proportion of 50/50% (w/w), 30/70% (w/w) and 20/80% (w/w). The printing parameters were optimized to a nozzle diameter of 20 Gauge for the production of rigid scaffolds with pre-defined architectures. We observed that, despite using similar printing parameters, both the precision and resolution of the scaffolds were significantly affected by the blend's viscosity. In particular, we demonstrate that the higher viscosity of 50/50 scaffolds (150.0 ± 3.91 mPa s) provides a higher precision in the extrusion process. The physicochemical and biological characterization of the samples demonstrated that the 50/50 scaffolds possessed a resistance to compression comparable to that of native trabecular bone. Moreover, this particular formulation also exhibited a Young's modulus that was higher than that of trabecular bone. Scanning electron microscopy and fluorescence microscopy analysis revealed that osteoblasts were able to adhere, proliferate and also penetrate into the scaffold's architecture. Altogether, our findings suggest that the Fab@home printer can be employed in the manufacture of reproducible scaffolds, using a formulation 50/50 alginate-β-TCP that has suitable properties to be applied as bone substitutes in the future. (paper)

  7. Micromechanical finite element modeling and experimental characterization of the compressive mechanical properties of polycaprolactone:hydroxyapatite composite scaffolds prepared by selective laser sintering for bone tissue engineering

    Science.gov (United States)

    Eshraghi, Shaun; Das, Suman

    2012-01-01

    Bioresorbable scaffolds with mechanical properties suitable for bone tissue engineering were fabricated from polycaprolactone (PCL) and hydroxyapatite (HA) by selective laser sintering (SLS) and modeled by finite element analysis (FEA). Both solid gage parts and scaffolds having 1-D, 2-D and 3-D orthogonal, periodic porous architectures were made with 0, 10, 20 and 30% HA by volume. PCL:HA scaffolds manufactured by SLS had nearly full density (99%) in the designed solid regions and had excellent geometric and dimensional control. Through optimization of the SLS process, the compressive moduli for our solid gage parts and scaffolds are the highest reported in the literature for additive manufacturing. The compressive moduli of solid gage parts were 299.3, 311.2, 415.5 and 498.3 MPa for PCL:HA loading at 100:0, 90:10, 80:20 and 70:30 respectively. The compressive effective stiffness tended to increase as the loading of HA was increased and the designed porosity was lowered. In the case of the most 3-D porous scaffold, the compressive modulus more than doubled from 14.9 MPa to 36.2 MPa when changing the material from 100:0 to 70:30 PCL:HA. A micromechanical finite element analysis (FEA) model was developed to investigate the reinforcement effect of HA loading on the compressive modulus of the bulk material. Using a first-principles based approach, the random distribution of HA particles in a solidified PCL matrix was modeled for any loading of HA to predict the bulk mechanical properties of the composites. The bulk mechanical properties were also used for FEA of the scaffold geometries. Results of the FEA were found to be in good agreement with experimental mechanical testing. The development of patient and site-specific composite tissue engineering constructs with tailored properties can be seen as a direct extension of this work on computational design, a priori modeling of mechanical properties and direct digital manufacturing. PMID:22522129

  8. Micromechanical finite-element modeling and experimental characterization of the compressive mechanical properties of polycaprolactone-hydroxyapatite composite scaffolds prepared by selective laser sintering for bone tissue engineering.

    Science.gov (United States)

    Eshraghi, Shaun; Das, Suman

    2012-08-01

    Bioresorbable scaffolds with mechanical properties suitable for bone tissue engineering were fabricated from polycaprolactone (PCL) and hydroxyapatite (HA) by selective laser sintering (SLS) and modeled by finite-element analysis (FEA). Both solid gage parts and scaffolds having 1-D, 2-D and 3-D orthogonal, periodic porous architectures were made with 0, 10, 20 and 30 vol.% HA. PCL:HA scaffolds manufactured by SLS had nearly full density (99%) in the designed solid regions and had excellent geometric and dimensional control. Through optimization of the SLS process, the compressive moduli for our solid gage parts and scaffolds are the highest reported in the literature for additive manufacturing. The compressive moduli of solid gage parts were 299.3, 311.2, 415.5 and 498.3 MPa for PCL:HA loading at 100:0, 90:10, 80:20 and 70:30, respectively. The compressive effective stiffness tended to increase as the loading of HA was increased and the designed porosity was lowered. In the case of the most 3-D porous scaffold, the compressive modulus more than doubled from 14.9 to 36.2 MPa when changing the material from 100:0 to 70:30 PCL:HA. A micromechanical FEA model was developed to investigate the reinforcement effect of HA loading on the compressive modulus of the bulk material. Using a first-principles based approach, the random distribution of HA particles in a solidified PCL matrix was modeled for any HA loading to predict the bulk mechanical properties of the composites. The bulk mechanical properties were also used for FEA of the scaffold geometries. The results of the FEA were found to be in good agreement with experimental mechanical testing. The development of patient- and site-specific composite tissue-engineering constructs with tailored properties can be seen as a direct extension of this work on computational design, a priori modeling of mechanical properties and direct digital manufacturing. Copyright © 2012 Acta Materialia Inc. Published by Elsevier Ltd. All

  9. STRENGTH AND CONDITIONING PRACTICES OF IRAN Wrestling League STRENGTH AND CONDITIONING COACHES

    Directory of Open Access Journals (Sweden)

    Far Saeed Jamshidi

    2014-08-01

    Full Text Available Purpose : The purpose of this study describes the results of a survey of the practices of Iranian Wrestling League strength and conditioning (IWL S&C coaches. Material: The response rate was 88.5% (100 of 113. The contents survey examines include: (a background information, (b physical testing, (c flexibility development, (d speed development, (e plyometrics, (f strength/power development, (g unique aspects, and (h comments from coaches providing additional information. Results: Results indicate, in part, that coaches assess an average of 7.3 parameters of fitness, with tests speed being the most common. All coaches used a variety of flexibility development strategies. Results reveal that all of IWL S&C coaches follow a periodization model. Speed as the first priority (100% and muscular endurance, power and strength as second priority (97% of importance in evaluating their athletes. Sixty-six percent coaches (66% indicated that their athletes used Olympic-style lifts. All coaches employed plyometric exercises with their athletes. Ninety-two percent (92% of the coaches reported that used plyometric trainings for increasing the speed of their wrestlers and 82% of the coaches used plyometric jump in place exercises as regular practice in their trainings. Conclusions: The squat and its variations, as well as the Olympic-style lifts and their variations, were the most frequently used exercises. The survey serves as a review and a source of applied information and new ideas.

  10. Scaffold-based rhBMP-2 therapy in a rat alveolar defect model: implications for human gingivoperiosteoplasty.

    Science.gov (United States)

    Nguyen, Phuong D; Lin, Clarence D; Allori, Alexander C; Schachar, Jeffrey S; Ricci, John L; Saadeh, Pierre B; Warren, Stephen M

    2009-12-01

    Primary alveolar cleft repair has a 41 to 73 percent success rate. Patients with persistent alveolar defects require secondary bone grafting. The authors investigated scaffold-based therapies designed to augment the success of alveolar repair. Critical-size, 7 x 4 x 3-mm alveolar defects were created surgically in 60 Sprague-Dawley rats. Four scaffold treatment arms were tested: absorbable collagen sponge, absorbable collagen sponge plus recombinant human bone morphogenetic protein-2 (rhBMP-2), hydroxyapatite-tricalcium phosphate, hydroxyapatite-tricalcium phosphate plus rhBMP-2, and no scaffold. New bone formation was assessed radiomorphometrically and histomorphometrically at 4, 8, and 12 weeks. Radiomorphometrically, untreated animals formed 43 +/- 6 percent, 53 +/- 8 percent, and 48 +/- 3 percent new bone at 4, 8, and 12 weeks, respectively. Animals treated with absorbable collagen sponge formed 50 +/- 6 percent, 79 +/- 9 percent, and 69 +/- 7 percent new bone, respectively. Absorbable collagen sponge plus rhBMP-2-treated animals formed 49 +/- 2 percent, 71 +/- 6 percent, and 66 +/- 7 percent new bone, respectively. Hydroxyapatite-tricalcium phosphate treatment stimulated 69 +/- 12 percent, 86 +/- 3 percent (p scaffold. Radiomorphometrically, absorbable collagen sponge and hydroxyapatite-tricalcium phosphate scaffolds induced more bone formation than untreated controls. The rhBMP-2 added a small but significant histomorphometric osteogenic advantage to the hydroxyapatite-tricalcium phosphate scaffold.

  11. Comparing club level rugby coaches and players' perceptions of ...

    African Journals Online (AJOL)

    A statistical significant difference exists between the coaches and players' perception regarding the respective coaches' total coaching effectiveness. In view of the inconsistent pattern found between the coaches and players perceptions on coaching effectiveness, coaches and clubs need to be more aware of the impact ...

  12. Catching the Bug: How Virtual Coaching Improves Teaching

    Science.gov (United States)

    Allen, Megan

    2014-01-01

    In this article the author describes virtual coaching and why it is so effective. The following six points of virtual coaching are explained: (1) Also known as bug-in-ear coaching, virtual coaching is not new; (2) Virtual coaching can save money and time; (3) Bug-in-ear coaching increases the frequency of observations for novice teachers; (4) It…

  13. Deformation and fatigue of tough 3D printed elastomer scaffolds processed by fused deposition modeling and continuous liquid interface production.

    Science.gov (United States)

    Miller, Andrew T; Safranski, David L; Wood, Catherine; Guldberg, Robert E; Gall, Ken

    2017-11-01

    Polyurethane (PU) based elastomers continue to gain popularity in a variety of biomedical applications as compliant implant materials. In parallel, advancements in additive manufacturing continue to provide new opportunities for biomedical applications by enabling the creation of more complex architectures for tissue scaffolding and patient specific implants. The purpose of this study was to examine the effects of printed architecture on the monotonic and cyclic mechanical behavior of elastomeric PUs and to compare the structure-property relationship across two different printing approaches. We examined the tensile fatigue of notched specimens, 3D crosshatch scaffolds, and two 3D spherical pore architectures in a physically crosslinked polycarbonate urethane (PCU) printed via fused deposition modeling (FDM) as well as a photo-cured, chemically-crosslinked, elastomeric PU printed via continuous liquid interface production (CLIP). Both elastomers were relatively tolerant of 3D geometrical features as compared to stiffer synthetic implant materials such as PEEK and titanium. PCU and crosslinked PU samples with 3D porous structures demonstrated a reduced tensile failure stress as expected without a significant effect on tensile failure strain. PCU crosshatch samples demonstrated similar performance in strain-based tensile fatigue as solid controls; however, when plotted against stress amplitude and adjusted by porosity, it was clear that the architecture had an impact on performance. Square shaped notches or pores in crosslinked PU appeared to have a modest effect on strain-based tensile fatigue while circular shaped notches and pores had little impact relative to smooth samples. When plotted against stress amplitude, any differences in fatigue performance were small or not statistically significant for crosslinked PU samples. Despite the slight difference in local architecture and tolerances, crosslinked PU solid samples were found to perform on par with PCU solid

  14. Exploring Coaching Actions Based on Developed Values: A Case Study of a Female Hockey Coach

    Science.gov (United States)

    Callary, Bettina; Werthner, Penny; Trudel, Pierre

    2013-01-01

    There are few empirical studies that demonstrate how values are developed and how they are linked to coaching actions. There can be a discrepancy between the statement of coaches' values and their actual coaching actions. In order to examine how coaching actions are influenced by values that are developed over a lifetime, the purpose of this…

  15. Analysis of an Instructional Coach's Role as Elementary School Language Teachers' Professional Developer

    Science.gov (United States)

    Chien, Chin-Wen

    2013-01-01

    Coaches can provide teachers with quality professional development experiences by mentoring, providing workshops, modeling, or encouraging professional growth (York-Barr & Duke, 2004). This study focuses on the instructional coach's role in the professional development of teachers of English language learners (ELLs). The study has the following…

  16. How to Measure Coach Burnout: An Evaluation of Three Burnout Measures

    Science.gov (United States)

    Lundkvist, Erik; Stenling, Andreas; Gustafsson, Henrik; Hassmén, Peter

    2014-01-01

    Although coach burnout has been studied for 30 years, what measure to use in this context has not yet been problematized. This study focuses on evaluating convergent and discriminant validity of three coach burnout measures by using multi-trait/multi-method analysis (CT-C[M-1]) model. We choose Maslach Burnout Inventory (MBI), the two dimensional…

  17. Links to Learning and Sustainability: Year Three Report of the Pennsylvania High School Coaching Initiative

    Science.gov (United States)

    Brown, Diane; Reumann-Moore, Rebecca; Hugh, Roseann; Christman, Jolley Bruce; Riffer, Morgan

    2009-01-01

    Research for Action's third and final report completes a three-year evaluation study of the Pennsylvania High School Coaching Initiative (PAHSCI). This report presents lessons from the PAHSCI model of school-based instructional coaching and mentoring as a vehicle for job-embedded professional learning. Reporting from an analysis using qualitative…

  18. Applying Coaching Strategies to Support Youth- and Family-Focused Extension Programming

    Science.gov (United States)

    Olson, Jonathan R.; Hawkey, Kyle R.; Smith, Burgess; Perkins, Daniel F.; Borden, Lynne M.

    2016-01-01

    In this article, we describe how a peer-coaching model has been applied to support community-based Extension programming through the Children, Youth, and Families at Risk (CYFAR) initiative. We describe the general approaches to coaching that have been used to help with CYFAR program implementation, evaluation, and sustainability efforts; we…

  19. Development of a systematic career coaching program for medical students

    Directory of Open Access Journals (Sweden)

    Yera Hur

    2018-03-01

    Full Text Available Purpose This study aimed to develop a systematic career-coaching program (SCCP that can be used by medical teaching schools to address a growing need for career-coaching. The program objectives were to help students (1 develop a comprehensive self-understanding of their aptitudes, interests, and personality traits; (2 explore possible career choices and decide on a career path; and (3 develop the competencies needed to prepare for their future careers. Methods The SCCP was based on the ADDIE (analysis, design, development, implementation, and evaluation model and decision-making questioning model. Medical professionals, medical education and career counseling experts, and students participated in designing the program. Results The SCCP describes coaching content, tools, operational methods, and appropriate timing, and identifies the professionals and specialists who can offer their expertise in the different coaching phases. It is designed to allow medical schools to offer the program in segments or in its entirety, depending on the curriculum and environment. Conclusion The SCCP represents a viable career-coaching program for medical students that can be applied in part or in its entirety, depending on a medical school’s curriculum and educational environment.

  20. Development of a systematic career coaching program for medical students.

    Science.gov (United States)

    Hur, Yera; Cho, A Ra; Kwon, Mihye

    2018-03-01

    This study aimed to develop a systematic career-coaching program (SCCP) that can be used by medical teaching schools to address a growing need for career-coaching. The program objectives were to help students (1) develop a comprehensive self-understanding of their aptitudes, interests, and personality traits; (2) explore possible career choices and decide on a career path; and (3) develop the competencies needed to prepare for their future careers. The SCCP was based on the ADDIE (analysis, design, development, implementation, and evaluation) model and decision-making questioning model. Medical professionals, medical education and career counseling experts, and students participated in designing the program. The SCCP describes coaching content, tools, operational methods, and appropriate timing, and identifies the professionals and specialists who can offer their expertise in the different coaching phases. It is designed to allow medical schools to offer the program in segments or in its entirety, depending on the curriculum and environment. The SCCP represents a viable career-coaching program for medical students that can be applied in part or in its entirety, depending on a medical school's curriculum and educational environment.

  1. Development of a systematic career coaching program for medical students

    Science.gov (United States)

    2018-01-01

    Purpose This study aimed to develop a systematic career-coaching program (SCCP) that can be used by medical teaching schools to address a growing need for career-coaching. The program objectives were to help students (1) develop a comprehensive self-understanding of their aptitudes, interests, and personality traits; (2) explore possible career choices and decide on a career path; and (3) develop the competencies needed to prepare for their future careers. Methods The SCCP was based on the ADDIE (analysis, design, development, implementation, and evaluation) model and decision-making questioning model. Medical professionals, medical education and career counseling experts, and students participated in designing the program. Results The SCCP describes coaching content, tools, operational methods, and appropriate timing, and identifies the professionals and specialists who can offer their expertise in the different coaching phases. It is designed to allow medical schools to offer the program in segments or in its entirety, depending on the curriculum and environment. Conclusion The SCCP represents a viable career-coaching program for medical students that can be applied in part or in its entirety, depending on a medical school’s curriculum and educational environment. PMID:29510607

  2. Informal Math Coaching by Instant Messaging: Two Case Studies of How University Students Coach K-12 Students

    Science.gov (United States)

    Hrastinski, Stefan; Edman, Anneli; Andersson, Fredrik; Kawnine, Tanvir; Soames, Carol-Ann

    2014-01-01

    The aim of this study is to describe and explore how instant messaging (IM) can be used to support informal math coaching. We have studied two projects where university students use IM to coach K-12 students in mathematics. The coaches were interviewed with a focus on how informal coaching works by examining coaching challenges, how coaching can…

  3. Performance appraisal of coaches: Acomparative study | Surujlal ...

    African Journals Online (AJOL)

    Within the sport environment, the performance appraisal of coaches continues to be an issue. The performance appraisal of coaches is critical to sport organizations since major decisions like rewarding or terminating coaches is based on it. The purpose of this study was to examine whether any differences exist with regard ...

  4. The Role of Coaching in Leadership Development.

    Science.gov (United States)

    Yarborough, J Preston

    2018-06-01

    Leadership coaching can be productive in maximizing a leader's development. But to make leadership coaching work effectively for students, as opposed to executives, this chapter offers guidance on key concepts and practices from the Center for Creative Leadership's Coaching Framework. © 2018 Wiley Periodicals, Inc.

  5. Effects of synchronous coaching in teacher training

    NARCIS (Netherlands)

    Hooreman, Ralph W.; Kommers, Petrus A.M.; Jochems, Wim M.G.

    2008-01-01

    Historically, the nature of coaching the teachers is asynchronously: a reflective discussion with the supervisory coach is the follow-up after a lesson has been taught. We expect that synchronous (immediate) coaching may complement and to a certain extent supplant the asynchronous feedback.

  6. Content-Focused Coaching: Five Key Practices

    Science.gov (United States)

    Gibbons, Lynsey K.; Cobb, Paul

    2016-01-01

    Many districts are using content-focused coaching as a strategy to provide job-embedded support to teachers. However, the current coaching literature provides little guidance on what coaches need to know and be able to do to engage teachers in activities that will support their development of ambitious instructional practices. Furthermore, little…

  7. THE MISNOMERS OF SPIRITUAL 'DIRECTING' AND 'COACHING'

    African Journals Online (AJOL)

    such as facilitation, therapy, and consulting, which I view as related to many ways .... we interact with people by means of modalities such as coaching or therapy. In my opinion, spirituality (and in the immediate context inclusive of religion) and narrative cannot be separated. .... gestalt coaching, and life coaching (Cox et al.

  8. Investigating the effects of cognitive apprenticeship-based instructional coaching on science teaching efficacy beliefs

    Science.gov (United States)

    Cooper, Teo O. H.

    The overall purpose of this collected papers dissertation was to examine the utility of a cognitive apprenticeship-based instructional coaching (CAIC) model for improving the science teaching efficacy beliefs (STEB) of preservice and inservice elementary teachers. Many of these teachers perceive science as a difficult subject and feel inadequately prepared to teach it. However, teacher efficacy beliefs have been noted as the strongest indicator of teacher quality, the variable most highly correlated with student achievement outcomes. The literature is scarce on strong, evidence-based theoretical models for improving STEB. This dissertation is comprised of two studies. STUDY #1 was a sequential explanatory mixed-methods study investigating the impact of a reformed CAIC elementary science methods course on the STEB of 26 preservice teachers. Data were collected using the Science Teaching Efficacy Belief Instrument (STEBI-B) and from six post-course interviews. A statistically significant increase in STEB was observed in the quantitative strand. The qualitative data suggested that the preservice teachers perceived all of the CAIC methods as influential, but the significance of each method depended on their unique needs and abilities. STUDY #2 was a participatory action research case study exploring the utility of a CAIC professional development program for improving the STEB of five Bahamian inservice teachers and their competency in implementing an inquiry-based curriculum. Data were collected from pre- and post-interviews and two focus group interviews. Overall, the inservice teachers perceived the intervention as highly effective. The scaffolding and coaching were the CAIC methods portrayed as most influential in developing their STEB, highlighting the importance of interpersonal relationship aspects in successful instructional coaching programs. The teachers also described the CAIC approach as integral in supporting their learning to implement the new inquiry

  9. Computer Problem-Solving Coaches

    Science.gov (United States)

    Hsu, Leon; Heller, Kenneth

    2005-09-01

    Computers might be able to play an important role in physics instruction by coaching students to develop good problem-solving skills. Building on previous research on student problem solving and on designing computer programs to teach cognitive skills, we are developing a prototype computer coach to provide students with guided practice in solving problems. In addition to helping students become better problem solvers, such programs can be useful in studying how students learn to solve problems and how and if problem-solving skills can be transferred from a computer to a pencil-and-paper environment.

  10. A Temporal Map of Coaching

    OpenAIRE

    Theeboom, Tim; Van Vianen, Annelies E. M.; Beersma, Bianca

    2017-01-01

    Economic pressures on companies, technological developments, and less stable career paths pose potential threats to the well-being of employees (e.g., stress, burn-out) and require constant adaptation. In the light of these challenges, it is not surprising that employees often seek the support of a coach. The role of a coach is to foster change by facilitating a coachees’ movement through a self-regulatory cycle with the ultimate aim of stimulating sustained well-being and functioning. While ...

  11. Business Management Coaching: Focusing on Entrepreneur's Current Position and Aims

    Science.gov (United States)

    Cheah, Kheng T.

    2012-01-01

    One-to-one business coaching over 6 months was provided to nine clients in Hawaii to help them acquire business transition skills. The STARS model was used to determine the individual business situation and to explore suitable leadership strategies to move forward. Systematically, each client developed a business model, business strategies, a…

  12. Breaking into the World of Coaching: The Graduate Student Coach.

    Science.gov (United States)

    Zeidler, Tom; Kirch, Michael W.

    A pilot study examined whether there is a "caste system" within the forensics community; what graduate students, faculty coaches, and tournament administrators can do to foster a sense of community and break down the caste system; and the role that formal and informal mentoring can play in this process. A survey was completed by 17…

  13. Neuronal Networks on Nanocellulose Scaffolds.

    Science.gov (United States)

    Jonsson, Malin; Brackmann, Christian; Puchades, Maja; Brattås, Karoline; Ewing, Andrew; Gatenholm, Paul; Enejder, Annika

    2015-11-01

    Proliferation, integration, and neurite extension of PC12 cells, a widely used culture model for cholinergic neurons, were studied in nanocellulose scaffolds biosynthesized by Gluconacetobacter xylinus to allow a three-dimensional (3D) extension of neurites better mimicking neuronal networks in tissue. The interaction with control scaffolds was compared with cationized nanocellulose (trimethyl ammonium betahydroxy propyl [TMAHP] cellulose) to investigate the impact of surface charges on the cell interaction mechanisms. Furthermore, coatings with extracellular matrix proteins (collagen, fibronectin, and laminin) were investigated to determine the importance of integrin-mediated cell attachment. Cell proliferation was evaluated by a cellular proliferation assay, while cell integration and neurite propagation were studied by simultaneous label-free Coherent anti-Stokes Raman Scattering and second harmonic generation microscopy, providing 3D images of PC12 cells and arrangement of nanocellulose fibrils, respectively. Cell attachment and proliferation were enhanced by TMAHP modification, but not by protein coating. Protein coating instead promoted active interaction between the cells and the scaffold, hence lateral cell migration and integration. Irrespective of surface modification, deepest cell integration measured was one to two cell layers, whereas neurites have a capacity to integrate deeper than the cell bodies in the scaffold due to their fine dimensions and amoeba-like migration pattern. Neurites with lengths of >50 μm were observed, successfully connecting individual cells and cell clusters. In conclusion, TMAHP-modified nanocellulose scaffolds promote initial cellular scaffold adhesion, which combined with additional cell-scaffold treatments enables further formation of 3D neuronal networks.

  14. Managerial Coaching in Enhancing Employees’ Motivation

    Directory of Open Access Journals (Sweden)

    Azman Ismail

    2016-06-01

    Full Text Available This study aims to measure the relationship between managerial coaching and employees‟ motivation. Survey method was employed to collect survey data via questionnaires distributed to midlevel officers at a military training center in Peninsular Malaysia. The results of hypothesis testing using SmartPLS path model analysis showed two important findings. First, communication did not significantly correlate with employees‟ motivation. Second, management support was significantly correlated with employees‟ motivation. These findings confirmed that communication is not an important determinant of employees‟ motivation, and management support is an important determinant of employees‟ motivation in the studied organizations. Furthermore, discussion, implications and conclusions are also elaborated.

  15. Teacher coaching supported by formative assessment for improving classroom practices.

    Science.gov (United States)

    Fabiano, Gregory A; Reddy, Linda A; Dudek, Christopher M

    2018-04-09

    The present study is a wait-list controlled, randomized study investigating a teacher coaching approach that emphasizes formative assessment and visual performance feedback to enhance elementary school teachers' classroom practices. The coaching model targeted instructional and behavioral management practices as measured by the Classroom Strategies Assessment System (CSAS) Observer and Teacher Forms. The sample included 89 general education teachers, stratified by grade level, and randomly assigned to 1 of 2 conditions: (a) immediate coaching, or (b) waitlist control. Results indicated that, relative to the waitlist control, teachers in immediate coaching demonstrated significantly greater improvements in observations of behavior management strategy use but not for observations of instructional strategy use. Observer- and teacher-completed ratings of behavioral management strategy use at postassessment were significantly improved by both raters; ratings of instructional strategy use were significantly improved for teacher but not observer ratings. A brief coaching intervention improved teachers' use of observed behavior management strategies and self-reported use of behavior management and instructional strategies. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

  16. The Coaching Process in Football – A qualitative perspective

    Directory of Open Access Journals (Sweden)

    Hugo Sarmento

    2014-03-01

    Full Text Available This study aims to understand what the coaches observe in the game, and how they evaluate and make their intervention based on this observation. The participants were 8 experienced First Portuguese League coaches. Semi-structured interviews were carried out and the data were analysed through the technique of content analysis. The software QSR NVivo 9 was used in coding the transcripts of the interviews. According to these coaches to effectively observe and analyze the game it is crucial to have a detailed knowledge of the game and of the individual characteristics of players. They consider that the most important aspects to observe in the game are: i the 4 moments of the game; ii set pieces; iv individual characteristics of players; v random aspects of the game. Coaches have the perception that over the years their observation has become more effective and they value different aspects in the game. They consider that the factors responsible for the evolution of their observations are: i the accumulated experience; ii a better knowledge of the game; iii the academic formation. These coaches evaluate the teams in a general way focusing mainly on strengths and weaknesses and they follow a specific logic of prioritization for the evaluation of these aspects that is based mainly, in their model of the game. The intervention is done mainly through the adaptation of the training exercises, but also through visual strategies (movies, photos, etc. and meetings (individual, by sector or in group.

  17. The Wild West of executive coaching.

    Science.gov (United States)

    Sherman, Stratford; Freas, Alyssa

    2004-11-01

    Annual spending on executive coaching in the United States is estimated at 1 billion dollars. Yet information about coaching's effectiveness is scarce and unreliable. No one has yet demonstrated conclusively what qualifies an executive coach or what makes one approach to executive coaching better than another. Barriers to entry are nonexistent--many executive coaches know little about business, and some know little about coaching. The coaching certifications offered by various self-appointed bodies are difficult to assess, and methods of measuring return on investment are questionable. But strategic coaching can provide critical help both to individuals and to organizations. In this article, Stratford Sherman, a senior vice president of Executive Coaching Network, and Alyssa Freas, the founder and CEO, explore the popularity of executive coaching and investigate ways to make the most of the experience. They argue that coaching is inevitably a triangular relationship between the client, the "coachee," and the coach. Its purpose is to produce behavioral change and growth in the coachee for the economic benefit of the client. The best way to maximize the likelihood of good results is to qualify all the people involved. Even so, many triangular relationships continue to generate conflict among all three parties. At the most basic level, coaches serve as suppliers of candor, providing leaders with the objective feedback they need to nourish their growth. Coaching gets executives to slow down, gain awareness, and notice the effects of their words and actions. On a larger scale, the best coaching fosters cultural change for the benefit of the entire organization. It provides a disciplined way for businesses to deepen relationships with their most valued employees while also increasing their effectiveness.

  18. Examinations of a new long-term degradable electrospun polycaprolactone scaffold in three rat abdominal wall models

    DEFF Research Database (Denmark)

    Jangö, Hanna; Gräs, Søren; Christensen, Lise

    2017-01-01

    Alternative approaches to reinforce native tissue in reconstructive surgery for pelvic organ prolapse are warranted. Tissue engineering combines the use of a scaffold with the regenerative potential of stem cells and is a promising new concept in urogynecology. Our objective was to evaluate whether...... together, the long-term degradable polycaprolactone scaffold provided biomechanical reinforcement by inducing a marked foreign-body response and attracting numerous inflammatory cells to form a strong neo-tissue construct. However, cells from the muscle fiber fragments did not survive in this milieu....... Properties of the new neo-tissue construct must be evaluated at the time of full degradation of the scaffold before its possible clinical value in pelvic organ prolapse surgery can be evaluated....

  19. Impediments to change: Applications of coaching in high-school science teaching

    Science.gov (United States)

    Tobin, Kenneth; Espinet, Mariona

    This article describes how two coaching models were utilized in an attempt to assist Jonathon, an experienced teacher who had been teaching science for only two years, to improve his science teaching. Because of the numerous difficulties that Jonathon encountered in planning and implementing the science curriculum, school administrators requested assistance from several science educators from a university near the school. In order to assist Jonathon, two coaching models were used over a period of approximately six months. In the first coaching program two high-school teachers were coached by three science educators from the university. In the second coaching program the teachers coached one another. Neither program was successful in improving Jonathon's teaching in the intended manner. The major impediments to change were Jonathon's beliefs about teaching and learning and his relatively poor knowledge of the science content he was to teach. The findings of the study suggest that the coaching interventions require teachers to analyze teaching, reflect on practice, and consider alternative approaches to teaching and learning. Involvement in the coaching programs provided Jonathon with a foundation of knowledge on which sustained improvements in teaching might develop in the future.

  20. The coach as a fellow human companion

    DEFF Research Database (Denmark)

    Stelter, Reinhard

    2016-01-01

    for the coaching conversation is to provide a space for new reflections by initiating a process that leads to transformation, a new self-understanding and enhanced agency. This transformational process may be inspired by third-generation coaching, where the coach and coachee are collaborative partners, and where...... the dialogical focus is on value reflection and the striving for meaning-making. Based on research into ‘common factors’, the main intention of the chapter is to unfold and illustrate key dimensions that lead towards the coach as a fellow human companion of the coaching partner: (1) The dialogical dimension, (2...

  1. Virtual coaches for healthy lifestyle

    NARCIS (Netherlands)

    op den Akker, Hendrikus J.A.; Klaassen, Randy; Nijholt, Antinus; Esposito, Anna; Jain, Lakhmi C.

    2016-01-01

    Since the introduction of the idea of the software interface agent the question recurs whether these agents should be personified and graphically visualized in the interface. In this chapter we look at the use of virtual humans in the interface of healthy lifestyle coaching systems. Based on theory

  2. Positive Pedagogy for Sport Coaching

    Science.gov (United States)

    Light, Richard L.; Harvey, Stephen

    2017-01-01

    The literature suggests that, despite some challenges in their implementation, player/athlete-centred, inquiry-based approaches to teaching games and coaching team sport can improve game playing ability, increase player/athlete motivation and provide positive affective experiences of learning. A range of these approaches, including Teaching Games…

  3. Bodies Matter in Literacy Coaching

    Science.gov (United States)

    Vasudevan, Lalitha

    2014-01-01

    Reading the implicit invitation in new literacies scholarship to reimagine pedagogy that leans into the lives of youth, Vasudevan reminds readers how the teacher's body is central to the meaning making of students in literacy classrooms. She extends this notion of embodiment to the work of the literacy coach and reiterates Skinner, Hagood,…

  4. Sinn als Thema im Coaching

    DEFF Research Database (Denmark)

    Stelter, Reinhard

    2017-01-01

    Die Sinnfrage ist zentral für den Menschen. Warum sollte man deshalb Coaching auf Zielsetzungen und Performance reduzieren? Es erscheint wichtig, den aktuellen gesellschaftlichen Diskurs aufzuweichen, der den einzelnen zu Selbstdisziplinierung zwingt und zu Depression, Selbstzweifel, Burn-out und...

  5. Transforming Farm Health and Safety: The Case for Business Coaching.

    Science.gov (United States)

    Blackman, Anna; Franklin, Richard C; Rossetto, Allison; Gray, David E

    2015-01-01

    In the U.S. and Australia, agriculture is consistently ranked as one of the most hazardous industries. The cost of injuries and deaths on Australian farms is significant, estimated to be between AU$0.5 billion and AU$1.2 billion per year. Death and injury in agriculture also place a significant financial and social burden on the family and friends of the injured, the community, and the health system. This article proposes that if farmers were to employ coaching in their businesses, they would benefit from advances in safety practices, resulting in associated improvements in overall farm productivity and a reduction in injury costs to the wider community. A coaching model is presented to demonstrate what an effective coaching process would need to include. An agenda for future research areas is also provided.

  6. Comparison of scaffold-enhanced albumin and n-butyl-cyanoacrylate adhesives for joining of tissue in a porcine model

    Science.gov (United States)

    McNally-Heintzelman, Karen M.; Riley, Jill N.; Heintzelman, Douglas L.

    2003-06-01

    An ex vivo study was conducted to compare the tensile strength of tissue samples repaired using three different techniques: (i) application of a scaffold-enhanced light-activated albumin protein solder, (ii) application of a scaffold-enhanced n-butyl-cyanoacrylate adhesive, and (iii) repair via conventional suture technique. Biodegradable polymer scaffolds of controlled porosity were fabricated with poly(L-lactic-co-glycolic acid) and salt particles using a solvent-casting and particulate-leaching technique. Group I porous scaffolds were doped with protein solder composed of 50%(w/v) bovine serum albumin solder and 0.5mg/ml indocyanine green dye mixed in deionized water, and activated with an 808-nm diode laser. Group II scaffolds were doped with n-butyl-cyanoacrylate, and required no light-activation. No stay sutures were required for Group I or II experiments. Group III repairs were performed using a single 4-0 suture. Thirteen organs were tested ranging from skin to liver to the small intestine, as well as the coronary, pulmonary, carotid, femoral and splenic arteries. Acute breaking strengths were measured and the data were analyzed by Student"s T-test. Using the protein solder of Group I, repairs formed on the ureter were most successful followed by small intestine, sciatic nerve, spleen, atrium, kidney, muscle, skin and ventricle. The strongest vascular repairs were achieved in the carotid artery and femoral artery. Overall, the tensile strength of Group III repairs performed via suture techniques were equivalent in magnitude to that of Group I repairs, however, a larger variance was observed in the suture repair group. Group II repairs utilizing the cyanoacrylate-doped scaffold all performed extremely well. Bonds formed using the Group II adhesive were approximately 30% stronger than Group I and III organ repairs and approximately 20% stronger than Group I and III vascular repairs. Application of the polymer scaffold assists in tissue alignment and reduces

  7. Coaching for College Students with ADHD.

    Science.gov (United States)

    Prevatt, Frances

    2016-12-01

    Evidence suggests that ADHD can impair academic achievement in college students and throughout the life span. College students with ADHD are an at-risk population who might benefit from interventions. An offshoot of CBT-oriented therapy that has grown significantly and gained popularity in recent years is ADHD coaching. ADHD coaching is a psychosocial intervention that helps individuals develop skills, strategies, and behaviors to cope with the core impairments associated with ADHD. Most coaching programs are primarily based on a CBT approach and target planning, time management, goal setting, organization, and problem solving. This paper describes ADHD coaching for college students and discusses how coaching is different from standard CBT treatment. This is followed by a review of empirical studies of the effectiveness of ADHD coaching for college students. Finally, some specific considerations and procedures used in coaching are described.

  8. Coaching - fokus på samtalen

    DEFF Research Database (Denmark)

    Coaching – fokus på samtalen præsenterer forskellige filosofiske og teoretiske perspektiver på coachingsamtalen og indeholder desuden analyser af autentiske coachingsamtaler, som finder sted i en organisatorisk kontekst. Bogens kapitler beskæftiger sig med forskellige tilgange til coaching, som de...... i coachingsamtalen. Coaching – fokus på samtalen er den tredje bog i serien om Organisatorisk Coaching. Den er skrevet af konsulenter, ledere og forskere, som arbejder med coaching i private og offentlige organisationer. Coaching – fokus på samtalen kan bruges på mellemlange og videregående...... uddannelser og henvender sig samtidig til ledere, konsulenter og andre forandringsagenter, der arbejder med coaching i en organisatorisk praksis....

  9. Gene Expression Changes in Long-Term In Vitro Human Blood-Brain Barrier Models and Their Dependence on a Transwell Scaffold Material

    Directory of Open Access Journals (Sweden)

    Joel D. Gaston

    2017-01-01

    Full Text Available Disruption of the blood-brain barrier (BBB is the hallmark of many neurovascular disorders, making it a critically important focus for therapeutic options. However, testing the effects of either drugs or pathological agents is difficult due to the potentially damaging consequences of altering the normal brain microenvironment. Recently, in vitro coculture tissue models have been developed as an alternative to animal testing. Despite low cost, these platforms use synthetic scaffolds which prevent normal barrier architecture, cellular crosstalk, and tissue remodeling. We created a biodegradable electrospun gelatin mat “biopaper” (BP as a scaffold material for an endothelial/astrocyte coculture model allowing cell-cell contact and crosstalk. To compare the BP and traditional models, we investigated the expression of 27 genes involved in BBB permeability, cellular function, and endothelial junctions at different time points. Gene expression levels demonstrated higher expression of transcripts involved in endothelial junction formation, including TJP2 and CDH5, in the BP model. The traditional model had higher expression of genes associated with extracellular matrix-associated proteins, including SPARC and COL4A1. Overall, the results demonstrate that the BP coculture model is more representative of a healthy BBB state, though both models have advantages that may be useful in disease modeling.

  10. The behavior style of coaches

    Directory of Open Access Journals (Sweden)

    Mijanović Mihajlo

    2016-01-01

    Full Text Available On the sample by 121 perspective young athletes was carried out the researching in the aim to establish the behavior style of coaches. The relevant information was obtained through the validated questionnaires of Chelladura and Saleha (1980. The questionnaire contains 40 questions which directly determine 5 behavior styles of coaches. All questions possess the scale by 5 levels with possible statements: (always, often, periodically, rarely and never. The true answer is only one statement on one question. It is word about five degrees 'Likert's scale'. It was carried out extensive and complex statistics processing of date, where the input qualitative categorical variables were transformed into quantitative. In the next step, transformed categorical variables were exposed in classical and neoclassical statistical methodology. On the base of exact indications which were obtained by using relevant invariant and multivariate statistical methods and tests, dominant behavior style of coaches is 'Instructive'. This behavior style of coach is the most desirable. According to this researching at the last position is behavior style which is the autocratically and it is also at the same time the least desirable. The results of Analysis of variance (ANOVA and Canonic discriminative analysis show the general statistical significant difference in the representation of the behavior styles. Instructive and Autocratic behavior style of coach mostly influences on the total (general discrimination i.e. difference. For above mentioned styles, it could be said that they are paradigm of contrasts in every way. Values of Tukey - HSD test explicitly shows that there are not statistical significant difference between Instructive Style and style Awarded - Feedback as well as between Democratically and style of Social Support. The other combinations i.e. couples of behavior styles are statistical significantly different.

  11. Wind Turbine Blade CAD Models Used as Scaffolding Technique to Teach Design Engineers

    Science.gov (United States)

    Irwin, John

    2013-01-01

    The Siemens PLM CAD software NX is commonly used for designing mechanical systems, and in complex systems such as the emerging area of wind power, the ability to have a model controlled by design parameters is a certain advantage. Formula driven expressions based on the amount of available wind in an area can drive the amount of effective surface…

  12. Molecular Recognition within Synaptic Scaffolds

    DEFF Research Database (Denmark)

    Erlendsson, Simon

    -length structural model of the PICK1 dimer in-solution. We found the PICK1 BAR dimer to resemble an elongated crescent-shaped structure, spanning ~160 Å, with the PICK1 PDZ domains loosely attached to the BAR domain. This finding is in contrast to previous findings for other BAR domain proteins, where adjacent......Scaffolding proteins are abundant participants and regulators of the extensive intracellular framework required for maintaining cellular functions such as cellular adhesion and signal transduction cascades. In excitatory neuronal synapses these scaffolding proteins often contain one or more PDZ...... domains, responsible for tethering their respective synaptic protein ligands. Therefore, understanding the specificity and binding mechanisms of PDZ domain proteins is essential to understand regulation of synaptic plasticity. PICK1 is a PDZ domain-containing scaffolding protein predominantly expressed...

  13. Mechanical anisotropy of titanium scaffolds

    Directory of Open Access Journals (Sweden)

    Rüegg Jasmine

    2017-09-01

    Full Text Available The clinical performance of an implant, e.g. for the treatment of large bone defects, depends on the implant material, anchorage, surface topography and chemistry, but also on the mechanical properties, like the stiffness. The latter can be adapted by the porosity. Whereas foams show isotropic mechanical properties, digitally modelled scaffolds can be designed with anisotropic behaviour. In this study, we designed and produced 3D scaffolds based on an orthogonal architecture and studied its angle-dependent stiffness. The aim was to produce scaffolds with different orientations of the microarchitecture by selective laser melting and compare the angle-specific mechanical behaviour with an in-silico simulation. The anisotropic characteristics of open-porous implants and technical limitations of the production process were studied.

  14. Design, Materials, and Mechanobiology of Biodegradable Scaffolds for Bone Tissue Engineering

    Science.gov (United States)

    Velasco, Marco A.; Narváez-Tovar, Carlos A.; Garzón-Alvarado, Diego A.

    2015-01-01

    A review about design, manufacture, and mechanobiology of biodegradable scaffolds for bone tissue engineering is given. First, fundamental aspects about bone tissue engineering and considerations related to scaffold design are established. Second, issues related to scaffold biomaterials and manufacturing processes are discussed. Finally, mechanobiology of bone tissue and computational models developed for simulating how bone healing occurs inside a scaffold are described. PMID:25883972

  15. A clinically relevant in vivo model for the assessment of scaffold efficacy in abdominal wall reconstruction

    Directory of Open Access Journals (Sweden)

    Jeffrey CY Chan

    2016-12-01

    Full Text Available An animal model that allows for assessment of the degree of stretching or contraction of the implant area and the in vivo degradation properties of biological meshes is required to evaluate their performance in vivo. Adult New Zealand rabbits underwent full thickness subtotal unilateral rectus abdominis muscle excision and were reconstructed with the non-biodegradable Peri-Guard®, Prolene® or biodegradable Surgisis® meshes. Following 8 weeks of recovery, the anterior abdominal wall tissue samples were collected for measurement of the implant dimensions. The Peri-Guard and Prolene meshes showed a slight and obvious shrinkage, respectively, whereas the Surgisis mesh showed stretching, resulting in hernia formation. Surgisis meshes showed in vivo biodegradation and increased collagen formation. This surgical rabbit model for abdominal wall defects is advantageous for evaluating the in vivo behaviour of surgical meshes. Implant area stretching and shrinkage were detected corresponding to mesh properties, and histological analysis and stereological methods supported these findings.

  16. SPORT NUTRITION KNOWLEDGE OF COACHES

    Directory of Open Access Journals (Sweden)

    Ivan Vasiljević

    2014-06-01

    Full Text Available Introduction: Decades of research support the theory that when there are sports competitions the question of what to eat and drink in order to enhance sport performance. Nutrition is one of the most important factors in achieving top performance athletes. According to most studies conducted in the world's top athletes receive information from their coaches when it comes to sports nutrition, especially of the coaches involved in fitness training. (Burns, Schiller, Merrick & Wolf, 2004.The aim of this study was to determine the knowledge of sports nutrition in sports coaching. Mthods: The sample was composed of 30 licensed coaches from Montenegro (football, handball, basketball, volleyball, athletics and tennis. Knowledge of sports nutrition was tested by means of a standardized questionnaire. The questionnaire was designed to determine the knowledge manager on sports nutrition, the ingredients that are necessary in order to provide a sufficient amount of energy to training and competition, the dietary supplements, meal prior to the competition as well as dehydration and rehydration during training and competition. The survey was anonymous. The data were analyzed by statistical methods, using the statistical software STATISTICA for WINDOWS. Results: According to the results as a whole, it can be concluded that the trainer's knowledge of sports nutrition at a satisfactory level. Out of 600 responses was achieved 469 correct answers, or 78.1%. However, when looking at individual responses then satisfaction with the relative high percentage loss since the observed large gaps on very important issues related to sports nutrition. Discussion: By analyzing and comparing research results (Matkovic, Prince & Cigrovski, 2006 that in a sample of 56 coaches basketball and skiing, received 77.8% of correct answers and insight into the results of our study, it is clear that the results of the approximate value of both work, which is an indicator of quality

  17. Coaches' attitudes towards placebo interventions in sport.

    Science.gov (United States)

    Szabo, Attila; Müller, Anna

    2016-01-01

    Placebo-induced performance enhancement is a new controversial issue in competitive sports. Coaches have control over the use of placebos, but their practices and attitudes were barely studied to date. In this survey 96 coaches from regional, national and international levels were asked about their practices and attitudes concerning placebo use in sports. Results revealed that 90% of the respondents were aware of placebo effects. Many (44%) coaches admitted to administering a placebo to their athletes. Those working at international level have administered placebos more often than the others (P = .02). Two thirds of the coaches agreed to the wider use of placebos in sport. Respondents who have used placebos in the past reported improved athletic performance. They also agreed more to the wider use of placebos than the coaches who previously did not use a placebo (P = .001). Team sport coaches use more often placebos than coaches working with individual athletes (P = .05). Only 10% of the sample thought that their athletes would refuse a hypothetical performance enhancer supplied by them. After a successful placebo intervention, only 15% of the coaches would administer it again without consulting the athlete. Overall, the coaches are optimistic about placebo use in sports. Close to half of them, especially those coaching at higher levels of competition, may use it regularly while achieving positive results.

  18. Scaffolding Online Collaborative Critiquing for Educational Video Production

    Directory of Open Access Journals (Sweden)

    Yiong Hwee Teo

    2009-03-01

    Full Text Available In art, design and media education, learning from examples has been an established way to coach students. To derive greater benefits, teachers should get students to go beyond mere studying of examples. This paper focuses on engaging novice learners in collaborative critiquing of real examples of professional work and past student work in the context of producing an educational video project. While critiquing of such works is not new in art education, there is however scant literature on how to involve students in collaborative critiquing in an online environment involving video projects. A four-step critique model was therefore designed as procedural scaffolding and implemented in an online system, Knowledge Community. A group of Singapore pre-service teachers were engaged in online collaborative critiquing of videos before they embarked on their video projects to illustrate what constitutes good and bad video production. This research points to the value of online collaborative critiquing as a way to facilitate novice designers‟ progress towards expertise. In this environment learners are able to look at problems through multiple perspectives, generate their own solutions and build knowledge that uses the overlapping expertise of the online community.

  19. The Effects of a Reflective Coaching Project for Veteran Teachers.

    Science.gov (United States)

    Nolan, James F.; Hillkirk, Keith

    1991-01-01

    Reports results of a year-long reflective coaching project involving a school district and a university. The project involved workshops on instructional techniques and peer coaching skills and 10 coaching cycles pairing a doctoral student coach and a teacher preparing to become a peer coach the following year. The program positively influenced…

  20. Reflection and Reflective Practice Discourses in Coaching: A Critical Analysis

    Science.gov (United States)

    Cushion, Christopher J.

    2018-01-01

    Reflection and reflective practice is seen as an established part of coaching and coach education practice. It has become a "taken-for-granted" part of coaching that is accepted enthusiastically and unquestioningly, and is assumed to be "good" for coaching and coaches. Drawing on sociological concepts, a primarily Foucauldian…

  1. Når coaching swinger

    Directory of Open Access Journals (Sweden)

    Line Fredens

    2015-12-01

    Full Text Available This article describes and analyzes the improvisational and innovative process that takes place between pro-fessional musicians during the extraordinary concert. The aim is to draw parallels to the professional coachingconversation in order to examine what new angles this analogy can contribute in proportion to coaching asa practice. In other words, how can an analysis of the musician’s communication during a successful concertshed light on what is happening in a successful professional dialogue.The article contains both empirical data and theory. The empirical data comes to results from a qualitativestudy undertaken in connection with my thesis within the Master of Learning Processes Specializing in Orga-nizational Coaching at Aalborg University, and is based on interviews with five professional orchestra musi-cians from the Royal Danish Orchestra, the Copenhagen Phil and the Danish National Symphony Orchestra

  2. The Relationship between Organizational Support, Work-Family Conflict, and the Job-Life Satisfaction of University Coaches

    Science.gov (United States)

    Dixon, Marlene A.; Sagas, Michael

    2007-01-01

    This study examined the relationship between organizational support, work-family conflict, and job and life satisfaction among coaches. Data from collegiate head coaches with families (N = 253) were gathered through a mailed questionnaire. Results from a series of covariance structure models indicated that a partially mediated model was the best…

  3. A RESEARCH ON HEALTHY LIVING BEHAVIORS OF ARCHERY COACHES AND BOXING COACHES

    Directory of Open Access Journals (Sweden)

    Ziya Bahadır

    2014-07-01

    Full Text Available The aim of the research was to assess healthy living behaviors of archery coaches and boxing coaches in terms of sportive branch, sportive experience and gender. The study was conducted with boxing coaches (n=119 and archery coaches (n=131. As the data collection tool; “ The Health - Promoting Lifestyle Profile II (HPLP - II which was developed by Walker et al . and validity and reliability tests of which were performed by Bahar et al . (2008 was employed. In the study; it was found out that mean score of boxing coaches on P hysical activity subscale was higher than archery coaches . Besides; no statistically significant difference s existed between archery coaches and boxing coaches in terms of gender and sportive experience.

  4. Role Behavior of the Coach and the Participants as Essential for the Results of Individual Coaching

    DEFF Research Database (Denmark)

    Pedersen, Louise Møller

    2015-01-01

    of the coach and the safety manager and the power relation between these lead to implementation failure. Lessons learned and possible solutions: Role behaviors of the coach and the participants are important for the implementation of individual coaching interventions. The theory of individual coaching needs......Background: Individual coaching has become a popular intervention tool to increase manager’s (named coaches) affective commitment, competences and effectiveness in conducting healthy organizational changes. The aim of this chapter is to explore the influence of the role behavior of the coach...... succeeded and supported substantial changes in the Company’s approach to safety. The safety manager solved 69% of the coaching tasks. However, the safety manager did not change her role behavior substantially and this intervention was categorized as partly failed. In this case, the role behaviors...

  5. The Manager Coaching in Management

    Directory of Open Access Journals (Sweden)

    Giovanna Díaz Cardozo

    2016-11-01

    Full Text Available The paper aims to make contributions to the Manager Coaching, optimization of management in all areas in which it develops and operates the human being, in that sense, devotes part of its content to the figure of the manager, and Coaching as a leader, manager, director and conductor of processes, identified as largely responsible, you must have knowledge and experience in such functions, in addition to meeting a set of skills that will allow you to efficiently fulfill their activities. It relies on documentary research, in obtaining information were used as data collection instruments, bibliographic documents, which provided the necessary information applied to the particular study. Subsequently content analysis was conducted, investigates informational meanings. To obtain the following conclusions, most relevant is: understand and accept that coaching at international level is a methodology that has managed to grab the attention of big transnational companies, very successful companies, large-scale, relying on the good use and management to achieve the manager, a momentous change in his personality, and the effect on people is responsible in the organization.

  6. Physical Therapists, Telephone Coaches, and Patients With Knee Osteoarthritis: Qualitative Study About Working Together to Promote Exercise Adherence.

    Science.gov (United States)

    Hinman, Rana S; Delany, Clare M; Campbell, Penelope K; Gale, Janette; Bennell, Kim L

    2016-04-01

    Integrated models of care are recommended for people with knee osteoarthritis (OA). Exercise is integral to management, yet exercise adherence is problematic. Telephone-based health coaching is an attractive adjunct to physical therapist-prescribed exercise that may improve adherence. Little is known about the perceptions and interpretations of physical therapists, telephone coaches, and patients engaged in this model of care. The purpose of this study was to explore how stakeholders (physical therapists, telephone coaches, and patients) experienced, and made sense of, being involved in an integrated program of physical therapist-supervised exercise and telephone coaching for people with knee OA. A cross-sectional qualitative design drawing from symbolic interactionism was used. Semistructured interviews with 10 physical therapists, 4 telephone coaches, and 6 patients with painful knee OA. Interviews were audiorecorded, transcribed, and analyzed using thematic analysis informed by grounded theory. Four themes emerged: (1) genuine interest and collaboration, (2) information and accountability, (3) program structure, and (4) roles and communication in teamwork. Patients reported they appreciated personalized, genuine interest from therapists and coaches and were aware of their complementary roles. A collaborative approach, with defined roles and communication strategies, was identified as important for effectiveness. All participants highlighted the importance of sharing information, monitoring, and being accountable to others. Coaches found the lack of face-to-face contact with patients hampered relationship building. Therapists and coaches referred to the importance of teamwork in delivering the intervention. The small number of physical therapists and telephone coaches who delivered the intervention may have been biased toward favorable experiences with the intervention and may not be representative of their respective professions. Integrated physical therapy and

  7. Applying the CREAM Strategy for Coaching Teaching Practices

    Directory of Open Access Journals (Sweden)

    Marine Milad

    2017-03-01

    Full Text Available Monitoring and evaluating staff tutors necessitates constant follow-up to ensure that they are in line with the University’s mission and vision. This has raised a fundamental educational question: how to coach rather than monitor the tutors. To answer this question, Cottrell’s (2008 CREAM (Creative, Reflective, Effective, Active, Motivated strategy was applied to coach these tutors following the GROW Model (Goal, Reality, Options, Will way forward as a framework for structuring both team and individual coaching sessions. Cottrell’s strategy was initially developed for enhancing the learner’s self-directed/autonomous learning. For the purpose of this implementation, the researchers applied the CREAM strategy as a self-assessment and observation tool. Being pragmatic leaders, they conducted three team coaching sessions and one-to-one individual sessions throughout the academic semester following the GROW Model to: establish SMART Goals, examine the current Reality, explore possible Options/Obstacles, and establish the Will. A checklist was developed to measure the staff tutors’ self-assessment of their Creative, Reflective, Effective, Active, and Motivated teaching practices and the same checklist was used by the head of the program as an observation checklist to evaluate these practices. The two tools were statistically analysed and a correlation was found.

  8. Coaching und Psychotherapie: Grenzen und Gemeinsamkeiten

    OpenAIRE

    Grimmer, B; Neukom, M

    2010-01-01

    Zu den Gemeinsamkeiten und Unterschieden von Coaching und Psychotherapie gab es bisher keine wissenschaftlichen Studien. Vor allem in der Coaching-Literatur wird zwar immer wieder eine klare Abgrenzung beider Verfahren gefordert und ihre Unterschiedlichkeit und Eigenständigkeit betont. Dabei wird argumentiert, dass die Trennungslinie zwischen gesund (Coaching) und krank (Psychotherapie) verläuft, aber ohne diese Gegenüberstellung weiter zu problematisieren oder wissenschaftlich zu analysie...

  9. Coaching as a Tool Supporting Trainers’ Talents

    Directory of Open Access Journals (Sweden)

    Joanna Mesjasz

    2013-09-01

    Full Text Available Coaching is a well-known term both in sport and business. The purpose of this article is to present coaching as a useful tool for improving the competence of the trainer. The article presents not only theoretical justification but also discusses the results of a pilot project which aim was to support the talents of the national team coaches. The above mentioned project was conducted in 2012 on behalf of the Ministry of Sport.

  10. Comparison of a Drug-Free Early Programmed Dismantling PDLLA Bioresorbable Scaffold and a Metallic Stent in a Porcine Coronary Artery Model at 3-Year Follow-Up.

    Science.gov (United States)

    Yahagi, Kazuyuki; Yang, Yi; Torii, Sho; Mensah, Johanne; White, Roseann M; Mathieu, Marion; Pacheco, Erica; Nakano, Masataka; Barakat, Abdul; Sharkawi, Tahmer; Vert, Michel; Joner, Michael; Finn, Aloke V; Virmani, Renu; Lafont, Antoine

    2017-06-09

    Arterial Remodeling Technologies bioresorbable scaffold (ART-BRS), composed of l- and d-lactyl units without drug, has shown its safety in a porcine coronary model at 6 months. However, long-term performance remains unknown. The aim of this study was to evaluate the ART-BRS compared to a bare metal stent (BMS) in a healthy porcine coronary model for up to 3 years. Eighty-two ART-BRS and 66 BMS were implanted in 64 Yucatan swine, and animals were euthanatized at intervals of 1, 3, 6, 9, 12, 18, 24, and 36 months to determine the vascular response using quantitative coronary angiography, optical coherence tomography, light and scanning electron microscopy, and molecular weight analysis. Lumen enlargement was observed in ART-BRS as early as 3 months, which progressively increased up to 18 months, whereas BMS showed no significant difference over time. Percentage area stenosis by optical coherence tomography was greater in ART-BRS than in BMS at 1 and 3 months, but this relationship reversed beyond 3 months. Inflammation peaked at 6 months and thereafter continued to decrease up to 36 months. Complete re-endothelialization was observed at 1 month following implantation in both ART-BRS and BMS. Scaffold dismantling started at 3 months, which allowed early vessel enlargement, and bioresorption was complete by 24 months. ART-BRS has the unique quality of early programmed dismantling accompanied by vessel lumen enlargement with mild to moderate inflammation. The main distinguishing feature of the ART-BRS from other scaffolds made from poly-l-lactic acid may result in early and long-term vascular restoration. © 2017 The Authors and Arterial Remodeling Technologies. Published on behalf of the American Heart Association, Inc., by Wiley.

  11. Examining coaches' perceptions of how their stress influences the coach-athlete relationship.

    Science.gov (United States)

    Thelwell, Richard C; Wagstaff, Christopher R D; Chapman, Michael T; Kenttä, Göran

    2017-10-01

    This study extends recent coach stress research by evaluating how coaches perceive their stress experiences to affect athletes, and the broader coach-athlete relationship. A total of 12 coaches working across a range of team sports at the elite level took part in semi-structured interviews to investigate the 3 study aims: how they perceive athletes to detect signals of coach stress; how they perceive their stress experiences to affect athletes; and, how effective they perceive themselves to be when experiencing stress. Following content analysis, data suggested that coaches perceived athletes able to detect when they were experiencing stress typically via communication, behavioural, and stylistic cues. Although coaches perceived their stress to have some positive effects on athletes, the overwhelming effects were negative and affected "performance and development", "psychological and emotional", and "behavioural and interaction" factors. Coaches also perceived themselves to be less effective when stressed, and this was reflected in their perceptions of competence, self-awareness, and coaching quality. An impactful finding is that coaches are aware of how a range of stress responses are expressed by themselves, and to how they affect athletes, and their coaching quality. Altogether, findings support the emerging view that coach stress affects their own, and athlete performance.

  12. Secondary Mathematics Coaching: The Components of Effective Mathematics Coaching and Implications

    Science.gov (United States)

    Bengo, Priscilla

    2016-01-01

    Mathematics coaching, which can be defined broadly as job-embedded learning for mathematics teachers with someone who can help, is being used in Canada to improve teaching practice and increase student achievement. Mathematics coaching research is quite new with little written on the components of effective coaching. The paper attempts to…

  13. How Coaches' Motivations Mediate Between Basic Psychological Needs and Well-Being/Ill-Being.

    Science.gov (United States)

    Alcaraz, Saul; Torregrosa, Miquel; Viladrich, Carme

    2015-01-01

    The purpose of the present research was to test how behavioral regulations are mediated between basic psychological needs and psychological well-being and ill-being in a sample of team-sport coaches. Based on self-determination theory, we hypothesized a model where satisfaction and thwarting of the basic psychological needs predicted coaches' behavioral regulations, which in turn led them to experience well-being (i.e., subjective vitality, positive affect) or ill-being (i.e., perceived stress, negative affect). Three-hundred and two coaches participated in the study (Mage = 25.97 years; 82% male). For each instrument employed, the measurement model with the best psychometric properties was selected from a sequence of nested models sustained by previous research, including exploratory structural equation models and confirmatory factor analysis. These measurement models were included in 3 structural equation models to test for mediation: partial mediation, complete mediation, and absence of mediation. The results provided support for the partial mediation model. Coaches' motivation mediated the relationships from both relatedness need satisfaction and basic psychological needs thwarting for coaches' well-being. In contrast, relationships between basic psychological needs satisfaction and thwarting and ill-being were only predicted by direct effects. Our results highlight that 3 conditions seem necessary for coaches to experience psychological well-being in their teams: basic psychological needs satisfaction, especially relatedness; lack of basic psychological needs thwarting; and self-determined motivation.

  14. Coaching leadership: leaders' and followers' perception assessment questionnaires in nursing.

    Science.gov (United States)

    Cardoso, Maria Lúcia Alves Pereira; Ramos, Laís Helena; D'Innocenzo, Maria

    2014-01-01

    To describe the development, content analysis, and reliability of two questionnaires to assess the perception of nurse leaders, nurse technicians, and licensed practical nurses - coached in the practice of leadership and the relation with the dimensions of the coaching process. This was a methodological study with a quantitative and qualitative approach, which had the goal of instrumentation in reference to the construction and validation of measuring instruments. The instrument proposition design was based on the literature on leadership, coaching, and assessment of psychometric properties, subjected to content validation as to clarity, relevance, and applicability in order to validate the propositions through the consensus of judges, using the Delphi technique, in 2010. The final version of the questionnaires was administered to 279 nurses and 608 nurse technicians and licensed practical nurses, at two university hospitals and two private hospitals. The Cronbach's alpha value with all items of the self-perception instrument was very high (0.911). The team members' instrument of perception showed that for all determinants and for each dimension of the coaching process, Cronbach's overall alpha value (0.952) was considered quite high, pointing to a very strong consistency of the scale. Confirmatory analysis showed that the models were well adjusted. From the statistical validation we compared the possibility of reusing the questionnaires for other study samples, because there was evidence of reliability and applicability.

  15. Factors influencing how senior nurses and midwives acquire and integrate coaching skills into routine practice: a grounded theory study.

    Science.gov (United States)

    Rafferty, Rae; Fairbrother, Greg

    2015-06-01

    To introduce a theory which describes the process of and explicates the factors moderating, the acquisition and integration of leadership coaching skills into the routine practice of senior nurses and midwives. Organizations invest significant resources in leadership coaching programs to ensure that coaching is embedded as a core function of the manager's role. However, even after training, many managers remain unable to undertake this role successfully. The process by which health professionals translate 'manager as coach' training into successful practice outcomes, has remained largely unexplored. A grounded theory study design. Data, collected between February 2012-May 2013, included in-depth interviews with 20 senior nurses and midwives who had attended a leadership coaching program and analysis of nine reflective practice journals. Multiple researchers coded and analysed the data using constant comparative techniques. The outcomes of coaching training ranged from inappropriate use of the coaching skills through to transformed managerial practice. These outcomes were influenced by the dynamic interaction of three central domains of the emergent theoretical model: pre-existing individual perceptions, program elements and contemporaneous experiences. Interactions occurred within the domains and between them, impacting on activators such as courage, motivation, commitment and confidence. The study offers new insights into how senior nurses and midwives acquire and integrate coaching skills into their routine practice. The process is described as multifactorial and dynamic and has implications for the training design, delivery and organizational support of future leadership coaching programs. © 2015 John Wiley & Sons Ltd.

  16. The efficacy of a scaffold-free Bio 3D conduit developed from human fibroblasts on peripheral nerve regeneration in a rat sciatic nerve model.

    Directory of Open Access Journals (Sweden)

    Hirofumi Yurie

    Full Text Available Although autologous nerve grafting is the gold standard treatment of peripheral nerve injuries, several alternative methods have been developed, including nerve conduits that use supportive cells. However, the seeding efficacy and viability of supportive cells injected in nerve grafts remain unclear. Here, we focused on a novel completely biological, tissue-engineered, scaffold-free conduit.We developed six scaffold-free conduits from human normal dermal fibroblasts using a Bio 3D Printer. Twelve adult male rats with immune deficiency underwent mid-thigh-level transection of the right sciatic nerve. The resulting 5-mm nerve gap was bridged using 8-mm Bio 3D conduits (Bio 3D group, n = 6 and silicone tube (silicone group, n = 6. Several assessments were conducted to examine nerve regeneration eight weeks post-surgery.Kinematic analysis revealed that the toe angle to the metatarsal bone at the final segment of the swing phase was significantly higher in the Bio 3D group than the silicone group (-35.78 ± 10.68 versus -62.48 ± 6.15, respectively; p < 0.01. Electrophysiological studies revealed significantly higher compound muscle action potential in the Bio 3D group than the silicone group (53.60 ± 26.36% versus 2.93 ± 1.84%; p < 0.01. Histological and morphological studies revealed neural cell expression in all regions of the regenerated nerves and the presence of many well-myelinated axons in the Bio 3D group. The wet muscle weight of the tibialis anterior muscle was significantly higher in the Bio 3D group than the silicone group (0.544 ± 0.063 versus 0.396 ± 0.031, respectively; p < 0.01.We confirmed that scaffold-free Bio 3D conduits composed entirely of fibroblast cells promote nerve regeneration in a rat sciatic nerve model.

  17. Nanotopography induced contact guidance of the F11 cell line during neuronal differentiation: a neuronal model cell line for tissue scaffold development

    International Nuclear Information System (INIS)

    Wieringa, Paul; Micera, Silvestro; Tonazzini, Ilaria; Cecchini, Marco

    2012-01-01

    The F11 hybridoma, a dorsal root ganglion-derived cell line, was used to investigate the response of nociceptive sensory neurons to nanotopographical guidance cues. This established this cell line as a model of peripheral sensory neuron growth for tissue scaffold design. Cells were seeded on substrates of cyclic olefin copolymer (COC) films imprinted via nanoimprint lithography (NIL) with a grating pattern of nano-scale grooves and ridges. Different ridge widths were employed to alter the focal adhesion formation, thereby changing the cell/substrate interaction. Differentiation was stimulated with forskolin in culture medium consisting of either 1 or 10% fetal bovine serum (FBS). Per medium condition, similar neurite alignment was achieved over the four day period, with the 1% serum condition exhibiting longer, more aligned neurites. Immunostaining for focal adhesions found the 1% FBS condition to also have fewer, less developed focal adhesions. The robust response of the F11 to guidance cues further builds on the utility of this cell line as a sensory neuron model, representing a useful tool to explore the design of regenerative guidance tissue scaffolds. (paper)

  18. Mathematical model of a rotational bioreactor for the dynamic cultivation of scaffold-adhered human mesenchymal stem cells for bone regeneration

    Science.gov (United States)

    Ganimedov, V. L.; Papaeva, E. O.; Maslov, N. A.; Larionov, P. M.

    2017-09-01

    Development of cell-mediated scaffold technologies for the treatment of critical bone defects is very important for the purpose of reparative bone regeneration. Today the properties of the bioreactor for cell-seeded scaffold cultivation are the subject of intensive research. We used the mathematical modeling of rotational reactor and construct computational algorithm with the help of ANSYS software package to develop this new procedure. The solution obtained with the help of the constructed computational algorithm is in good agreement with the analytical solution of Couette for the task of two coaxial cylinders. The series of flow computations for different rotation frequencies (1, 0.75, 0.5, 0.33, 1.125 Hz) was performed for the laminar flow regime approximation with the help of computational algorithm. It was found that Taylor vortices appear in the annular gap between the cylinders in a simulated bioreactor. It was obtained that shear stress in the range of interest (0.002-0.1 Pa) arise on outer surface of inner cylinder when it rotates with the frequency not exceeding 0.8 Hz. So the constructed mathematical model and the created computational algorithm for calculating the flow parameters allow predicting the shear stress and pressure values depending on the rotation frequency and geometric parameters, as well as optimizing the operating mode of the bioreactor.

  19. Executive Function Coaching: Assisting With Transitioning From Secondary to Postsecondary Education.

    Science.gov (United States)

    Goudreau, Shara B; Knight, Melissa

    2018-02-01

    ADHD is defined as impairment to self-regulatory behavior and executive functioning (EF). Many students with other learning disabilities (LD) also experience EF impairments. With the rising number of students with ADHD and LD enrolling in higher education, it is important to recognize the challenges these students face and to provide effective support when transitioning from secondary to postsecondary school. This article examines the challenges of the transition from secondary to postsecondary environments, specifically with the student diagnosed with ADHD and/or other LD. Scholarly articles relating to the efficacy of EF coaching as well as students with ADHD and/or other LD transitioning from secondary to postsecondary school were examined and then considered for best practices in EF coaching. Although the literature supports that EF coaching can improve EF skills, there is a paucity of empirical studies that examines the efficacy of EF coaching (Franklin & Franklin, 2012). The literature also supports the use of EF coaching for students with ADHD and/or LD when transitioning from highschool to college, however limited research has been published to date. With the finite research available in the field of coaching, recommendations for future consideration and research is included to support the need for evidence-based programs. An EF coaching model at Lynn University's Institute for Achievement and Learning (IAL) is discussed and addresses how students are supported during their first year at the University.

  20. Intention to use sport concussion guidelines among community-level coaches and sports trainers.

    Science.gov (United States)

    Newton, Joshua D; White, Peta E; Ewing, Michael T; Makdissi, Michael; Davis, Gavin A; Donaldson, Alex; Sullivan, S John; Seward, Hugh; Finch, Caroline F

    2014-09-01

    Sporting bodies have developed guidelines for managing community-level players with suspected concussion in response to international consensus statements on concussion in sport. The purpose of this study was to examine the factors that influence the intended use of concussion guidelines among community-level coaches and sports trainers from two popular football codes in Australia: Australian football and rugby league. Cross-sectional survey. The survey, based on an extended theory of planned behaviour model, was completed by 183 Australian football coaches, 121 Australian football sports trainers, 171 rugby league coaches, and 142 rugby league sports trainers. Personal norms and self-efficacy were significant predictors of intention to use concussion guidelines, although the relationship between self-efficacy and intention was stronger among Australian football coaches than rugby league coaches. Analysis of the salient beliefs that underpin self-efficacy found that coaches, irrespective of football code, felt less familiar (χ(2)=25.70, psports trainers in using the concussion guidelines. At the same time, Australian football personnel, irrespective of their team role, felt that they had insufficient time (χ(2)=8.04, psport concussion guidelines should focus on enhancing self-efficacy and leveraging personal norms. Increasing coaches' familiarity and experience in using the concussion guidelines would also be warranted, as would finding ways to overcome the perceived time and resource constraints identified among Australian football personnel. Copyright © 2013 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.

  1. Active Ingredients of Instructional Coaching: Developing a Conceptual Framework. R2Ed Working Paper 2015-3

    Science.gov (United States)

    White, Andrew S.; Howell Smith, Michelle; Kunz, Gina M.; Nugent, Gwen C.

    2015-01-01

    Although researchers have explored the impact of instructional coaching and named possible elements believed essential to effective coaching, there has yet to emerge from the literature a coherent model of those essential elements ("active ingredients"). This qualitative study sought to identify those elements through a systematic…

  2. The Incredible Years Teacher Classroom Management Program: Using Coaching to Support Generalization to Real-World Classroom Settings

    Science.gov (United States)

    Reinke, Wendy M.; Stormont, Melissa; Webster-Stratton, Carolyn; Newcomer, Lori L.; Herman, Keith C.

    2012-01-01

    This article focuses on the Incredible Years Teacher Classroom Management Training (IY TCM) intervention as an example of an evidence-based program that embeds coaching within its design. First, the core features of the IY TCM program are described. Second, the IY TCM coaching model and processes utilized to facilitate high fidelity of…

  3. Occupational Vocal Health of Elite Sports Coaches: An Exploratory Pilot Study of Football Coaches.

    Science.gov (United States)

    Buckley, Katie L; O'Halloran, Paul D; Oates, Jennifer M

    2015-07-01

    To explore the occupational voice use and vocal health of elite football coaches. This pilot study explored coaches' voice use patterns and vocal demands across workplace environments. Each coach's experiences of voice symptoms and voice problems were also investigated. Twelve Australian professional football coaches participated in a mixed-methods data collection approach. Data were collected through acoustic voice measurement (Ambulatory Phonation Monitor), semistructured interviews, and a voice symptom questionnaire (Voice Capabilities Questionnaire). Acoustic measures suggested heavy vocal loads for coaches during player training. All participants reported experiencing voice symptoms. They also suggested that the structure of their working week, workplace tasks, and vocal demands impacted on their voices. Despite this, participants reported little previous reflection or awareness of what impacted on their voices. Coaches typically did not consider how to support their voices during daily work and discussed experiencing voice symptoms as an inevitable part of their jobs. This study demonstrates that occupational vocal demands may negatively impact on sports coaches' vocal health. This is particularly important, considering coaches' heavy vocal loads across coaching tasks and reported negative occupational vocal health experience. Furthermore, coaches' limited insight into voice use and vocal health management may impact on their vocal performance and health. Given the exploratory nature of this study, further research into coaches' occupational vocal health is warranted. Copyright © 2015 The Voice Foundation. Published by Elsevier Inc. All rights reserved.

  4. Improving Principals' Instructional Leadership through Peer Coaching.

    Science.gov (United States)

    Roberts, Jo

    1991-01-01

    Describes an elementary peer leadership coaching project that enabled principals to improve their instructional leadership skills. Project evaluation indicated there was self-perceived growth in instructional leadership. Coaches underestimated the power of active listening. Specific peer matches did not affect the results. Flexibility,…

  5. Making the Most of Instructional Coaches

    Science.gov (United States)

    Kane, Britnie Delinger; Rosenquist, Brooks

    2018-01-01

    Although coaching holds great promise for professional development, instructional coaches are often asked to take on responsibilities that are not focused on improving instruction. The authors discuss a quantitative study of four school districts and a qualitative analysis of a single district that, together, reveal how hiring practices and school…

  6. Coaches' Training the Special Olympics Way.

    Science.gov (United States)

    Roswal, Glenn M.

    1988-01-01

    The article describes the training provided prospective coaches of mentally retarded participants in Special Olympics at Special Olympics International Training Schools. Presentations on Special Olympics, mental retardation, athletic injury prevention, coaching techniques, and specific sports skills instruction are provided as well as direct…

  7. Workplace Learning of High Performance Sports Coaches

    Science.gov (United States)

    Rynne, Steven B.; Mallett, Clifford J.; Tinning, Richard

    2010-01-01

    The Australian coaching workplace (to be referred to as the State Institute of Sport; SIS) under consideration in this study employs significant numbers of full-time performance sport coaches and can be accurately characterized as a genuine workplace. Through a consideration of the interaction between what the workplace (SIS) affords the…

  8. A formalization of the coach problem

    NARCIS (Netherlands)

    Schropp, G. Y R; Meyer, J. J Ch; Ramamoorthy, S.

    2015-01-01

    Coordination is an important aspect of multi-agent teamwork. In the context of robot soccer in the RoboCup Standard Platform League, our focus is on the coach as an external observer of the team, aiming to provide his teammates with effective tactical advice during matches. The coach problem can be

  9. "Safeguarding" Sports Coaching: Foucault, Genealogy and Critique

    Science.gov (United States)

    Garratt, Dean; Piper, Heather; Taylor, Bill

    2013-01-01

    This paper offers a genealogical account of safeguarding in sport. Drawing specifically on Foucault's work, it examines the "politics of touch" in relation to the social and historical formation of child protection policy in sports coaching. While the analysis has some resonance with the context of coaching as a whole, for illustrative…

  10. Business coaching: challenges for an emerging industry

    NARCIS (Netherlands)

    Clegg, S.R.; Rhodes, C.G.; Kornberger, M.; Stilin, R.

    2005-01-01

    Purpose — To identify the distinguishing characteristics and future challenges for the business coaching industry in Australia. Design/methodology/approach — A telephone survey of business coaching firms was used to identify the main structural characteristics of the industry. Structured interviews

  11. Leadership Coaching for Principals: A National Study

    Science.gov (United States)

    Wise, Donald; Cavazos, Blanca

    2017-01-01

    Surveys were sent to a large representative sample of public school principals in the United States asking if they had received leadership coaching. Comparison of responses to actual numbers of principals indicates that the sample represents the first national study of principal leadership coaching. Results indicate that approximately 50% of all…

  12. Preventiong Burnout in Teacher/Coaches.

    Science.gov (United States)

    Sisley, Becky L.; And Others

    1987-01-01

    Teacher-coaches are particularly susceptible to stress and burnout because of role conflict, role ambiguity, and role overload. Administrators need to be more aware of the special problems teacher-coaches have, develop alternative staffing patterns, and try to relieve some of the stress and pressure. (CB)

  13. New Principal Coaching as a Safety Net

    Science.gov (United States)

    Celoria, Davide; Roberson, Ingrid

    2015-01-01

    This study examines new principal coaching as an induction process and explores the emotional dimensions of educational leadership. Twelve principal coaches and new principals--six of each--participated in this qualitative study that employed emergent coding (Creswell, 2008; Denzin, 2005; Glaser & Strauss, 1998; Spradley, 1979). The major…

  14. A Multidisciplinary Framework of Instructional Coaching

    Science.gov (United States)

    Kurz, Alexander; Reddy, Linda A.; Glover, Todd A.

    2017-01-01

    Across a wide variety of disciplines, coaching has become the universal practice for improving the professional performance of individuals and, consequently, the effectiveness of their organizations. Despite these shared outcomes, the coaching of individuals such as executives, athletes, and teachers features a variety of approaches, each with its…

  15. Coaches' Contracts Are Fertile Ground for Conflict

    Science.gov (United States)

    Sander, Libby; Fain, Paul

    2009-01-01

    Billy Gillispie, like many college basketball coaches, was hired--and fired--in a hurry. But the contract negotiations that dragged on for nearly two years while he coached the University of Kentucky's men's basketball team showed little of the same urgency that defined his entrance and exit. Mr. Gillispie worked for Kentucky under a memorandum of…

  16. Older people's experiences of dream coaching.

    Science.gov (United States)

    Wadensten, Barbro

    2009-12-01

    Recalling and talking about dreams could initiate dream work among older people and provide an opportunity for self-confrontation and personal growth, which could in turn promote gerotranscendental development. The present article describes older people's opinions about participating in a dream-coaching group; it also briefly describes the theoretical foundation of dream coaching. The study aim was to investigate older people's experience of participating in a dream-coaching group based on Jungian psychology. A descriptive design was used. Retrospective interviews were explored using qualitative content analysis. The participants were satisfied with the arrangement of the dream-coaching groups. All participants believed that they had recalled their dreams and thought much more about their dreams during the period in which the dream-coaching group met. Three diverse appraisals of participating in a dream-coaching group, which had different effects on the participants, were identified: "An activity like any other activity," "An activity that led to deeper thoughts about the meaning of dreams," and "An activity that led to deeper thoughts both about the meaning of dreams and about how dreams can improve one's understanding of the life situation." It is possible to arrange dream-coaching groups for older people and could be a way to promote personal development using this type of intervention. The study provides some guidance as to how such a group could be organized, thus facilitating use of dream-coaching groups in gerontological care.

  17. Can managers coach their teams too much?

    NARCIS (Netherlands)

    Buljac-Samardzic, M.; van Woerkom, M.

    2015-01-01

    Purpose The relationship between managerial coaching and team performance may be mediated by team reflection because coaching is often thought to lead to reflection, which has been found to lead to improved performance. In contrast, this relationship might be moderated by team reflection, because

  18. The dynamics of scaffolding

    NARCIS (Netherlands)

    Van Geert, P. L. C.; Steenbeek, H.W.

    2005-01-01

    In this article we have reinterpreted a relatively standard definition of scaffolding in the context of dynamic systems theory. Our main point is that scaffolding cannot be understood outside the context of a dynamic approach of learning and (formal or informal) teaching. We provide a dynamic

  19. Bioresorbable vascular scaffold radial expansion and conformation compared to a metallic platform: insights from in vitro expansion in a coronary artery lesion model.

    Science.gov (United States)

    Foin, Nicolas; Lee, Renick; Bourantas, Christos; Mattesini, Alessio; Soh, Nicole; Lim, Jie En; Torii, Ryo; Ng, Jaryl; Liang, Leo Hwa; Caiazzo, Gianluca; Fabris, Enrico; Kilic, Ismail Dogu; Onuma, Yoshinobu; Low, Adrian F; Nijjer, Sukh; Sen, Sayan; Petraco, Ricardo; Al Lamee, Rasha; Davies, Justin E; Di Mario, Carlo; Wong, Philip; Serruys, Patrick W

    2016-09-18

    This study aimed to compare the acute expansion behaviour of a polymer-based bioresorbable scaffold and a second-generation metallic DES platform in a realistic coronary artery lesion model. Experimental mechanical data with conventional methods have so far shown little difference between metallic stents and currently available polymer-based bioresorbable scaffolds (BRS). Nevertheless, differences in acute results have been observed in clinical studies comparing BRS directly with metallic DES platforms. We examined the expansion behaviour of the bioresorbable vascular scaffold (3.0×18 mm Absorb BVS; Abbott Vascular, Santa Clara, CA, USA) and a metallic DES (3.0×18 mm XIENCE Prime; Abbott Vascular) after expansion at 37°C using identical coronary artery stenosis models (in total 12 experiments were performed). Device expansion was compared during balloon inflation and after deflation using microscopy to allow assessment of plaque recoil. Minimal lumen diameter (MLD) and minimal lumen area (MLA) and stent eccentricity were quantified from optical coherence tomography (OCT) imaging at nominal diameter and after post-dilation at 18 atm. The MLA in the models with BVS deployed was 4.92±0.17 mm² while in the metallic DES it was 5.40±0.13 mm2 (p=0.02) at nominal pressure (NP), and 5.41±0.20 and 6.07±0.25 mm2 (p=0.02), respectively, after expansion at 18 atm. Stent eccentricity index at the MLA was 0.71±0.02 in BVS compared to 0.81±0.02 in the metal stent at NP (p=0.004), and 0.73±0.03 compared to 0.75±0.02 at 18 atm (p=0.39). Results obtained in this in vitro lesion model were comparable to the results in randomised clinical trials comparing BVS and XIENCE stents in vivo. Such models may be useful in future BRS developments to predict their acute response in vivo in eccentric lesions.

  20. Empowering Muslim Women Though Executive Coaching & Mentoring

    Directory of Open Access Journals (Sweden)

    Fadila Grine

    2014-06-01

    Full Text Available This paper examines the role and effect of executive coaching and mentoring on the empowerment of Muslim women and enhancing their levels of contribution. It further substantiates the manner in which executive coaching can accommodate both the nature and needs of Muslim women while further unleashing her respective talents, creativity and skills. The study further highlights the role and significance of coaching in spheres relevant to family, as well as social and career development. This study highlights the use of the strategic technique for personal and leadership development set to explore talents, leaders and implicit abilities. Moreover, it exhibits the flexibility of self-coaching and its appropriateness for Muslim women, especially concerning self-development, which in turn influences social and institutional development. This inquiry highlights a number of practical results which emphasizes the viability and efficacy of executive coaching on personal and institutional levels as far as the making of better world for Muslim women is concerned.

  1. Academic performance and perception of learning following a peer coaching teaching and assessment strategy.

    Science.gov (United States)

    Moore, Catherine; Westwater-Wood, Sarah; Kerry, Roger

    2016-03-01

    Peer coaching has been associated with positive effects on learning. Specifically, these associations have been explored in complex healthcare professions. A social theory of learning has been proposed as a key component of the utility of peer coaching. Further, within the peer coaching model, assessment has been considered as an important driver. Empirical support for these dimensions of the model is lacking. To quantify assessment achievements and explore emergent attitudes and beliefs about learning related to a specific peer coaching model with integrated assessment. A longitudinal study based in a UK Higher Education Institute recorded assessment achievements and surveyed attitudes and beliefs in consecutive Year 1 undergraduate (physiotherapy) students (n = 560) between 2002 and 2012. A 6% improvement in academic achievement was demonstrated following the introduction of a peer coaching learning model. This was increased by a further 5% following the implementation of an integrated assessment. The improvement related to an overall averaged increase of one marking band. Students valued the strategy, and themes relating to the importance of social learning emerged from survey data. Peer coaching is an evidence-based teaching and learning strategy which can facilitate learning in complex subject areas. The strategy is underpinned by social learning theory which is supported by emergent student-reported attitudes.

  2. Use of Sports Science Knowledge by Turkish Coaches.

    Science.gov (United States)

    Kilic, Koray; Ince, Mustafa Levent

    The purpose of this study is to examine the following research questions in Turkish coaching context: a) What are coaches' perceptions on the application of sport science research to their coaching methods? b) What sources do coaches utilize to obtain the knowledge they need? c) What barriers do coaches encounter when trying to access and apply the knowledge they need for their sport? In addition, differences in research questions responses were examined based on gender, years of coaching experience, academic educational level, coaching certificate level, coaching team or individual sports, and being paid or unpaid for coaching. The participants were 321 coaches (255 men, 66 women) from diverse sports and coaching levels working in Ankara. The questionnaire "New Ideas for Coaches" by Reade, Rodgers and Hall (2008) was translated, adapted into Turkish, and validated for the current study. According to our findings among Turkish coaches, there is a high prevalence of beliefs that sport science contributes to sport (79.8%);however, there are gaps between what coaches are looking for and the research that is being conducted. Coaches are most likely to attend seminars or consult other coaches to get new information. Scientific publications were ranked very low by the coaches in getting current information. The barriers to coaches' access to sport science research are finding out the sources of information, being able to implement the sport science knowledge into the field of coaching, lack of monetary support in acquiring knowledge, and language barriers. Also, differences in perceptions and preferences for obtaining new information were identified based on coaches' gender, coaching contexts (i.e., professional-amateur), coaching settings (i.e., team/individual), and their other demographic characteristics (i.e., coaching experience, coaching educational level, and coaching certificate level). Future coach education programs should emphasize the development of coaches

  3. Promoting Savings at Tax Time through a Video-Based Solution-Focused Brief Coaching Intervention

    OpenAIRE

    Lance Palmer; Teri Pichot; Irina Kunovskaya

    2016-01-01

    Solution-focused brief coaching, based on solution-focused brief therapy, is a well-established practice model and is used widely to help individuals progress toward desired outcomes in a variety of settings. This papers presents the findings of a pilot study that examined the impact of a video-based solution-focused brief coaching intervention delivered in conjunction with income tax preparation services at a Volunteer Income Tax Assistance location (n = 212). Individuals receiving tax prepa...

  4. Quantitative RNA-Seq analysis in non-model species: assessing transcriptome assemblies as a scaffold and the utility of evolutionary divergent genomic reference species

    Directory of Open Access Journals (Sweden)

    Hornett Emily A

    2012-08-01

    Full Text Available Abstract Background How well does RNA-Seq data perform for quantitative whole gene expression analysis in the absence of a genome? This is one unanswered question facing the rapidly growing number of researchers studying non-model species. Using Homo sapiens data and resources, we compared the direct mapping of sequencing reads to predicted genes from the genome with mapping to de novo transcriptomes assembled from RNA-Seq data. Gene coverage and expression analysis was further investigated in the non-model context by using increasingly divergent genomic reference species to group assembled contigs by unique genes. Results Eight transcriptome sets, composed of varying amounts of Illumina and 454 data, were assembled and assessed. Hybrid 454/Illumina assemblies had the highest transcriptome and individual gene coverage. Quantitative whole gene expression levels were highly similar between using a de novo hybrid assembly and the predicted genes as a scaffold, although mapping to the de novo transcriptome assembly provided data on fewer genes. Using non-target species as reference scaffolds does result in some loss of sequence and expression data, and bias and error increase with evolutionary distance. However, within a 100 million year window these effect sizes are relatively small. Conclusions Predicted gene sets from sequenced genomes of related species can provide a powerful method for grouping RNA-Seq reads and annotating contigs. Gene expression results can be produced that are similar to results obtained using gene models derived from a high quality genome, though biased towards conserved genes. Our results demonstrate the power and limitations of conducting RNA-Seq in non-model species.

  5. Physician communication coaching effects on patient experience.

    Directory of Open Access Journals (Sweden)

    Adrianne Seiler

    Full Text Available Excellent communication is a necessary component of high-quality health care. We aimed to determine whether a training module could improve patients' perceptions of physician communication behaviors, as measured by change over time in domains of patient experience scores related to physician communication.We designed a comprehensive physician-training module focused on improving specific "etiquette-based" physician communication skills through standardized simulations and physician coaching with structured feedback. We employed a quasi-experimental pre-post design, with an intervention group consisting of internal medicine hospitalists and residents and a control group consisting of surgeons. The outcome was percent "always" scores for questions related to patients' perceptions of physician communication using the Hospital Consumer Assessment of Healthcare Providers and Systems (HCAHPS survey and a Non-HCAHPS Physician-Specific Patient Experience Survey (NHPPES administered to patients cared for by hospitalists.A total of 128 physicians participated in the simulation. Responses from 5020 patients were analyzed using HCAHPS survey data and 1990 patients using NHPPES survey data. The intercept shift, or the degree of change from pre-intervention percent "always" responses, for the HCAHPS questions of doctors "treating patients with courtesy" "explaining things in a way patients could understand," and "overall teamwork" showed no significant differences between surgical control and hospitalist intervention patients. Adjusted NHPPES percent excellent survey results increased significantly post-intervention for the questions of specified individual doctors "keeping patient informed" (adjusted intercept shift 9.9% P = 0.019, "overall teamwork" (adjusted intercept shift 11%, P = 0.037, and "using words the patient could understand" (adjusted intercept shift 14.8%, p = 0.001.A simulation based physician communication coaching method focused on specific

  6. Effects of a motivational climate inntervention for coaches on young athletes' sport performance anxiety.

    Science.gov (United States)

    Smith, Ronald E; Smoll, Frank L; Cumming, Sean P

    2007-02-01

    The mastery approach to coaching is a cognitive-behavioral intervention designed to promote a mastery-involving motivational climate, shown in previous research to be related to lower anxiety in athletes. We tested the effects of this intervention on motivational climate and on changes in male and female athletes'cognitive and somatic performance anxiety over the course of a basketball season. Hierarchical linear modeling analyses revealed that the athletes in the intervention condition perceived their coaches as being more mastery-involving on the Motivational Climate Scale for Youth Sports when compared to athletes in an untreated control condition. Relative to athletes who played for untrained coaches, those who played for the trained coaches exhibited decreases on all subscales of the Sport Anxiety Scale-2 and on total anxiety score from preseason to late season. Control group athletes reported increases in anxiety over the season. The intervention had equally positive effects on boys and girls teams.

  7. Strength-based leadership coaching in organizations an evidence-based guide to positive leadership development

    CERN Document Server

    MacKie, Doug

    2016-01-01

    Positive organizational psychology, with its focus on the identification and development of strengths, is a natural ally to executive development and leadership coaching. However, this approach is only just beginning to come to the attention of organizations and consequently, the research base for strength-based coaching is in its early stages of development. Strength-based Leadership Coaching in Organizations reviews strength-based approaches to positive leadership development and evaluates the evidence for their effectiveness, critically assesses their apparent distinctiveness and considers how strengths can be reliably assessed and developed in their organizational context. This book reviews key areas of leader and team development are reviewed and outlines and describes a model of strengths development in organizations. The application of strength-based leadership coaching will be discussed from the managerial and external perspective within the context of career stage, seniority, role challenges and orga...

  8. Athlete preference of coach's leadership style | Surujlal | African ...

    African Journals Online (AJOL)

    This may require the coach to display flexibility in adapting his/her leadership style to suit specific leadership situations so that all stakeholders (i.e. coach, athletes and management) are satisfied. Coaches wield strong influence over their athletes, therefore their leadership skills forms a vital element of their coaching.

  9. Coaching Strategies for Helping Adolescent Athletes Cope with Stress

    Science.gov (United States)

    Gilbert, Jenelle N.; Gilbert, Wade; Morawski, Cynthia

    2007-01-01

    This article discusses the various sources of athlete stress and the strategies that coaches can use to help young athletes cope with it. The information is based on a study with a competitive adolescent soccer team and its two coaches, and a review of the coaching and sport psychology literature. The suggested coaching strategies can help to…

  10. Research Update: Enhancing the Youth Sports Experience through Coaching.

    Science.gov (United States)

    Steelman, Todd

    1995-01-01

    Reviews research on the relationship between youth sports coaches and players, noting that the youth sports coach can be the most important figure in socializing children in the area of sports. The paper discusses how to deal with the stresses in coaching and examines the need for coach effectiveness training. (SM)

  11. High School Rugby Players' Perception of Coaching Effectiveness

    Science.gov (United States)

    Broodryk, Retief; van den Berg, Pieter Hendrick

    2011-01-01

    The aims of this study were firstly to determine the players' perceptions of their respective coaches' coaching effectiveness and secondly, determine the difference between big and small schools of the players' perceptions of their respective coaches' coaching effectiveness. Four hundred and seventy six players from 22 schools were asked to fill…

  12. Truth and Courage: Implementing a Coaching Culture. White Paper

    Science.gov (United States)

    Riddle, Douglas

    2016-01-01

    Many leaders recognize that coaching is more than a collection of effective techniques. This recognition has led them to strive for a corporate culture that reflects a coaching mindset and the kind of relationships that coachees find liberating. As many more leaders have experienced the benefits of coaching (by professional coaches or mentors) the…

  13. Coaching diversity in South Africa | Hills | African Journal for ...

    African Journals Online (AJOL)

    The article raises the need for a better understanding of the unique problems facing sport coaches in Africa. Sport coaches in Africa and in particular South Africa, are facing challenges arising from diversity arising from constitutional issues. The coach in Africa cannot always coach in the lines of their western counterparts ...

  14. Financial Coaching's Potential for Enhancing Family Financial Security

    Science.gov (United States)

    Collins, J. Michael; Olive, Peggy; O'Rourke, Collin M.

    2013-01-01

    Financial coaching is an emerging complement to financial education and counseling. As defined in this article, financial coaching is a process whereby participants set goals, commit to taking certain actions by specific dates, and are then held accountable by the coach. In this way, financial coaching is designed to help participants bridge the…

  15. E-Coaching Systems: Convenient, Anytime, Anywhere, and Nonhuman

    Science.gov (United States)

    Warner, Teri

    2012-01-01

    Technologies continue to evolve to provide more compelling and interactive learning opportunities. Coaching has traditionally been face-to-face or by email. By combining the new technologies with coaching, learning developers now have the opportunity to develop an asynchronous, online, nonhuman coaching system, or e-coaching system. An e-coaching…

  16. Reflections on a Coaching Pilot Project in Healthcare Settings

    Science.gov (United States)

    Gurbutt, D. J.; Gurbutt, R.

    2016-01-01

    This paper draws on personal reflection of coaching experiences and learning as a coach to consider the relevance of these approaches in a management context with a group of four healthcare staff who participated in a pilot coaching project. It explores their understanding of coaching techniques applied in management settings via their reflections…

  17. Clarifying the Coaching Roles: Principal, Department Head, Teacher.

    Science.gov (United States)

    Conway, James

    1991-01-01

    Coaching occurs in many fields, including music, drama, and various sports activities. Building a "coaching" metaphor might help clarify differences in coaching roles that principals and teachers find confusing. Most head coaches recognize that responsible evaluation is more helpful than absolute power in helping each player be the best…

  18. Charting the Research on the Policies and Politics of Coaching

    Science.gov (United States)

    Woulfin, Sarah L.

    2014-01-01

    Facing relentless pressure to improve student achievement, many states and districts are using coaching as a policy lever to promote changes in practice. This special issue centers on the policies and politics of coaching, and this editorial commentary highlights what we know about the role of coaches and coaching in the field of education. Then I…

  19. Investigation of Localized Delivery of Diclofenac Sodium from Poly(D,L-Lactic Acid-co-Glycolic Acid)/Poly(Ethylene Glycol) Scaffolds Using an In Vitro Osteoblast Inflammation Model

    Science.gov (United States)

    Sidney, Laura E.; Heathman, Thomas R.J.; Britchford, Emily R.; Abed, Arif; Rahman, Cheryl V.

    2015-01-01

    Nonunion fractures and large bone defects are significant targets for osteochondral tissue engineering strategies. A major hurdle in the use of these therapies is the foreign body response of the host. Herein, we report the development of a bone tissue engineering scaffold with the ability to release anti-inflammatory drugs, in the hope of evading this response. Porous, sintered scaffolds composed of poly(D,L-lactic acid-co-glycolic acid) (PLGA) and poly(ethylene glycol) (PEG) were prepared with and without the anti-inflammatory drug diclofenac sodium. Analysis of drug release over time demonstrated a profile suitable for the treatment of acute inflammation with ∼80% of drug released over the first 4 days and a subsequent release of around 0.2% per day. Effect of drug release was monitored using an in vitro osteoblast inflammation model, comprised of mouse primary calvarial osteoblasts stimulated with proinflammatory cytokines interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α), and interferon-γ (IFN-γ). Levels of inflammation were monitored by cell viability and cellular production of nitric oxide (NO) and prostaglandin E2 (PGE2). The osteoblast inflammation model revealed that proinflammatory cytokine addition to the medium reduced cell viability to 33%, but the release of diclofenac sodium from scaffolds inhibited this effect with a final cell viability of ∼70%. However, releasing diclofenac sodium at high concentrations had a toxic effect on the cells. Proinflammatory cytokine addition led to increased NO and PGE2 production; diclofenac-sodium-releasing scaffolds inhibited NO release by ∼64% and PGE2 production by ∼52%, when the scaffold was loaded with the optimal concentration of drug. These observations demonstrate the potential use of PLGA/PEG scaffolds for localized delivery of anti-inflammatory drugs in bone tissue engineering applications. PMID:25104438

  20. Impact of peer delivered wellness coaching.

    Science.gov (United States)

    Swarbrick, Margaret; Gill, Kenneth J; Pratt, Carlos W

    2016-09-01

    People receiving publicly funded behavioral health services for severe mental disorders have shorter lifespans and significantly impaired health-related quality of life compared to the general population. The aim of this article was to explore how peer wellness coaching (PWC), a manualized approach to pursue specific physical wellness goals, impacted goal attainment and overall health related quality of life. Deidentified archival program evaluation data were examined to explore whether peer delivered wellness coaching had an impact on 33 service recipients with regard to goal attainment and health-related quality of life. Participants were served by 1 of 12 wellness coach trainees from a transformation transfer initiative grant who had been trained in the manualized approach. Coaching participants and their coaches reported significant progress toward the attainment of individually chosen goals, 2 to 4 weeks after establishing their goals. After 8 to 10 weeks of peer delivered wellness coaching, improvements were evident in the self-report of physical health, general health, and perceived health. These improvements were sustained 90 days later. PWC is potentially a promising practice for helping people choose and pursue individual goals and facilitating positive health and wellness changes. Rigorous controlled research with larger samples is needed to evaluate the benefits of peer delivered wellness coaching. (PsycINFO Database Record (c) 2016 APA, all rights reserved).

  1. Coaching bioethically with the purpose of achieving sustainable development

    OpenAIRE

    Striedinger-Meléndez, Martha Patricia

    2016-01-01

    The present article analyzes the problematic of teaching and learning bioethics in the context of higher education, with an emphasis in medicine and aiming towards sustainable development. The objective is to expose that one of the alternatives to get to know bioethics in higher education institutions, is to coach each community bioethically. This means that the educator must be a role model for the students: not only teaching, but, living bioethically. In the beginning, it makes refe...

  2. Evolutionary design of bone scaffolds with reference to material selection.

    Science.gov (United States)

    Heljak, M K; Swięszkowski, W; Lam, C X F; Hutmacher, D W; Kurzydłowski, K J

    2012-01-01

    The favourable scaffold for bone tissue engineering should have desired characteristic features, such as adequate mechanical strength and three-dimensional open porosity, which guarantee a suitable environment for tissue regeneration. In fact, the design of such complex structures like bone scaffolds is a challenge for investigators. One of the aims is to achieve the best possible mechanical strength-degradation rate ratio. In this paper we attempt to use numerical modelling to evaluate material properties for designing bone tissue engineering scaffold fabricated via the fused deposition modelling technique. For our studies the standard genetic algorithm was used, which is an efficient method of discrete optimization. For the fused deposition modelling scaffold, each individual strut is scrutinized for its role in the architecture and structural support it provides for the scaffold, and its contribution to the overall scaffold was studied. The goal of the study was to create a numerical tool that could help to acquire the desired behaviour of tissue engineered scaffolds and our results showed that this could be achieved efficiently by using different materials for individual struts. To represent a great number of ways in which scaffold mechanical function loss could proceed, the exemplary set of different desirable scaffold stiffness loss function was chosen. Copyright © 2012 John Wiley & Sons, Ltd.

  3. Coaching to Augment Mentoring to Achieve Faculty Diversity: A Randomized Controlled Trial.

    Science.gov (United States)

    Williams, Simon N; Thakore, Bhoomi K; McGee, Richard

    2016-08-01

    The Academy for Future Science Faculty (the Academy) is a novel coaching intervention for biomedical PhD students designed to address limitations in previous efforts to promote faculty diversity. Unlike traditional research mentoring, the Academy includes both group and individual coaching, coaches have no research or evaluation roles with the students, and it is based on social science theories. The authors present a qualitative case study of one of the coaching groups and provide statistical analyses indicating whether one year in the Academy effects students' perceptions of the achievability and desirability of an academic career. The authors tested (July 2012-July 2013), with Northwestern University ethical approval, the Academy via a longitudinal randomized controlled trial. Participants were 121 latter-stage biomedical PhD students. The authors collected data via questionnaires, interviews, and meeting recordings. The case study shows how group career coaching can effectively supplement traditional one-to-one research mentoring; provide new role models for underrepresented minority students; and provide theory-based lenses through which to engage in open conversations about race, gender, and science careers. Repeated-measures analysis of variance showed that perceived achievability increased in the Academy group from baseline to one-year follow-up (mean, 5.75 versus 6.39) but decreased in the control group (6.58 versus 5.81). Perceived desirability decreased significantly less (P coaching model can effectively supplement traditional research mentoring and promote persistence toward academic careers.

  4. Coaching the Debriefer: Peer Coaching to Improve Debriefing Quality in Simulation Programs.

    Science.gov (United States)

    Cheng, Adam; Grant, Vincent; Huffman, James; Burgess, Gavin; Szyld, Demian; Robinson, Traci; Eppich, Walter

    2017-10-01

    Formal faculty development programs for simulation educators are costly and time-consuming. Peer coaching integrated into the teaching flow can enhance an educator's debriefing skills. We provide a practical guide for the who, what, when, where, why, and how of peer coaching for debriefing in simulation-based education. Peer coaching offers advantages such as psychological safety and team building, and it can benefit both the educator who is receiving feedback and the coach who is providing it. A feedback form for effective peer coaching includes the following: (1) psychological safety, (2) framework, (3) method/strategy, (4) content, (5) learner centeredness, (6) co-facilitation, (7) time management, (8) difficult situations, (9) debriefing adjuncts, and (10) individual style and experience. Institutional backing of peer coaching programs can facilitate implementation and sustainability. Program leaders should communicate the need and benefits, establish program goals, and provide assessment tools, training, structure, and evaluation to optimize chances of success.

  5. Enhancing nursing students' education by coaching mentors.

    Science.gov (United States)

    Huggins, David

    2016-04-01

    To address some of the recommendations of the Willis Commission ( Royal College of Nursing 2012 ), and in response to local evaluation of mentor and nursing student experiences, the University of East Anglia has implemented a project to teach mentors coaching skills. The aim is to enhance mentor support of nursing students during practice placements and improve student learning in practice. This article describes the project and discusses the similarities and differences between mentoring and coaching. It shows how coaching has reduced the 'burden' of mentoring by reducing mentors' workloads, and has helped students to take responsibility for identifying learning needs and delivering supervised patient care.

  6. Coaching og konflikthåndtering

    DEFF Research Database (Denmark)

    Lindkvist, Pia

    , hvor coaching er et af de udviklingsværktøjer, som kan give lederkompetencer på organisations-, team- og individuelt niveau. Bogen behandler og gennemgår en række af de mekanismer og redskaber, der kan bruges af ledere og medarbejdere for at sikre, samarbejdet i organisationen undgår at blive hindret...... af ikke-konstruktive konflikter. Coaching i denne bog skal udelukkende forstås som et værktøj og derfor tages der ikke stilling til de teoretiske tilgange til coaching....

  7. Resultados del coaching aplicado a ejecutivos

    OpenAIRE

    Vásquez Garzón, William Alonso

    2012-01-01

    El coaching como herramienta para la vida diaria de las empresas ha adquirido en la última década una fuerza considerable en los ámbitos más competitivos de las empresas, como por ejemplo la fuerza comercial y la definición de estrategias para conquistar mercados y alcanzar las metas, que cada vez son más altas. Esto motivo al análisis del coaching ejecutivo de un grupo de ejecutivos pertenecientes al alta y media gerencia, los cuales se capacitaron en técnicas de coaching y ejecutaron los mi...

  8. How the Framing of Instructional Coaching as a Lever for Systemic or Individual Reform Influences the Enactment of Coaching

    Science.gov (United States)

    Mangin, Melinda M.; Dunsmore, KaiLonnie

    2015-01-01

    Purpose: Instructional coaching is framed as both a means for systemic and individual reform. These competing conceptualizations of coaching as a mechanism for change have not been systematically examined, and therefore, we know little about how the framing of instructional coaching initiatives affects the enactment of coaching. In response to…

  9. Pharmacy Students as Health Coaches

    Directory of Open Access Journals (Sweden)

    Dominick P Trombetta, Pharm.D

    2016-11-01

    Full Text Available Chronic diseases are the main contributor to both health care costs and mortality in the United States, with medication non-adherence and lifestyle modifications being leading causes. To motivate patients with several co-morbidities, the longitudinal care class was used to educate on maintaining adherence to prescribed regimens. Twenty pharmacy students were trained in health coaching and motivational interviewing methods. Specifically, students were to provide patients with education sheets, apply the teach-back method, and motivate the patient to develop and reach SMART goals made with the pharmacy student over a course of one academic school year. Conflict of Interest We declare no conflicts of interest or financial interests that the authors or members of their immediate families have in any product or service discussed in the manuscript, including grants (pending or received, employment, gifts, stock holdings or options, honoraria, consultancies, expert testimony, patents and royalties.   Type: Note

  10. The role of coach-athlete relationship quality in team sport athletes' psychophysiological exhaustion: implications for physical and cognitive performance.

    Science.gov (United States)

    Davis, Louise; Appleby, Ralph; Davis, Paul; Wetherell, Mark; Gustafsson, Henrik

    2018-01-23

    The present study aimed to examine associations between the quality of the coach-athlete relationship and athlete exhaustion by assessing physiological and cognitive consequences. Male and female athletes (N = 82) representing seven teams across four different sports, participated in a quasi-experimental study measuring physical performance on a 5-meter multiple shuttle test, followed by a Stroop test to assess cognitive performance. Participants provided saliva samples measuring cortisol as a biomarker of acute stress response and completed questionnaires measuring exhaustion, and coach-athlete relationship quality. Structural equation modelling revealed a positive relationship between the quality of the coach-athlete relationship and Stroop performance, and negative relationships between the quality of the coach-athlete relationship and cortisol responses to high-intensity exercise, cognitive testing, and exhaustion. The study supports previous research on socio-cognitive correlates of athlete exhaustion by highlighting associations with the quality of the coach-athlete relationship.

  11. Communication Strategies Used by Physical Education Teachers and Coaches in Residential Schools for the Deaf in the U.S.

    Directory of Open Access Journals (Sweden)

    Kurková Petra

    2016-05-01

    Full Text Available The purpose of this study was to determine what communication and instructional techniques including coaching strategies were being implemented by coaches and physical education (PE teachers working in residential or day schools for the deaf throughout the U. S. Further, to share this information with coaches and PE teachers in general education classrooms. Questionnaire was answered electronically from 32 coaches and PE teachers (38 % return rate. Topics in the survey included: a types of sports/PE classes; b mode of communication used; c coaching and teaching techniques; d coaching and teaching strategies; e breakdowns in communication; f advice to new coaches a teachers starting out in the field. Advice for new coaches, who had not previously worked with the individuals who are deaf or hard of hearing (D/HH, six themes emerged: become fluent in ASL, remember to get the student’s attention before you start signing, use a lot of modelling, role playing, and videos (when needed, keep it simple, stress the fundamentals and insist on repetition until skills are mastered, and be flexible, each player will learn differently. Our results suggest that targeted and adapted communication strategies in PE and physical activities play important role for individuals who are D/HH.

  12. Coaching in organisations: how the use of fictional characters can develop coaching practice

    OpenAIRE

    Eastman, Christine

    2016-01-01

    Purpose\\ud This article consists of a case study that reports on a pedagogical intervention undertaken among a group of postgraduate students in the area of coaching. The intervention was designed to bridge the gulf between coaching theory and practice, a gap identified by\\ud coaching research and corroborated by professional practice students on the university course examined here.\\ud \\ud Design/methodology/approach\\ud The study gives an account of how literary fiction was used with a cohort...

  13. Arm Motion Recognition and Exercise Coaching System for Remote Interaction

    Directory of Open Access Journals (Sweden)

    Hong Zeng

    2016-01-01

    Full Text Available Arm motion recognition and its related applications have become a promising human computer interaction modal due to the rapid integration of numerical sensors in modern mobile-phones. We implement a mobile-phone-based arm motion recognition and exercise coaching system that can help people carrying mobile-phones to do body exercising anywhere at any time, especially for the persons that have very limited spare time and are constantly traveling across cities. We first design improved k-means algorithm to cluster the collecting 3-axis acceleration and gyroscope data of person actions into basic motions. A learning method based on Hidden Markov Model is then designed to classify and recognize continuous arm motions of both learners and coaches, which also measures the action similarities between the persons. We implement the system on MIUI 2S mobile-phone and evaluate the system performance and its accuracy of recognition.

  14. Exact approaches for scaffolding

    OpenAIRE

    Weller, Mathias; Chateau, Annie; Giroudeau, Rodolphe

    2015-01-01

    This paper presents new structural and algorithmic results around the scaffolding problem, which occurs prominently in next generation sequencing. The problem can be formalized as an optimization problem on a special graph, the "scaffold graph". We prove that the problem is polynomial if this graph is a tree by providing a dynamic programming algorithm for this case. This algorithm serves as a basis to deduce an exact algorithm for general graphs using a tree decomposition of the input. We ex...

  15. Do managers that coach become better leaders? An exploration into the relationship between managerial coaching and leader development

    OpenAIRE

    Gomez, Esteban; Gunn, Ryan

    2012-01-01

    Purpose: Within managerial coaching research, no-one has specifically explored the relationship between managerial coaching and leader development for the manger. Does the manager derive beneficial outcomes from coaching others? Do these outcomes help develop the manager to be a better leader? The Authors ask What is the relationship between managerial coaching and leader development from the perspective of the coaching manager? In answering, two objectives are addressed. First, establish if ...

  16. El Coaching y la transformación organizacional: una oportunidad para las Empresas y los Coaches

    OpenAIRE

    Carlos Mario Muñoz Maya; Olga Lucía Díaz Villamizar

    2014-01-01

    This article presents descriptive results of a coaching proposal to organizational transformation trough managers, human resources chiefs and student perceptions about organizational coaching. It takes a 14 coaching aspects instrument in 103 survey completed fulfilled. Results indicate coaching transforms companies En el presente documento se presentan los resultados de la investigación de carácter descriptivo con miras a elaborar una propuesta de Coaching para la transformación organizac...

  17. The Role of Communications in Coaching

    Directory of Open Access Journals (Sweden)

    Urszula Dziewulska

    2008-12-01

    Full Text Available The aim of this article is presenting one of the development tools, that is coaching. There were bringing up the basic definitions and described coaching stages, styles and techniques used in conversation by trainers in the article. In the article were presented the main roles that should be kept by coach as well as the barriers that he can meets during his work. There were indicated the crucial role of interpersonal communication in conversation between two persons in that case coach and pupil and also the most popular mistakes. There were given also the roles of listening that are the most important in keeping positive vocational and private contacts with others. Moreover in the article prescribed “good trainer” features and the sense of such skills as building the positive relations with pupil, listening, using the intuition, asking and giving the feedback.

  18. Are coaches' health promotion activities beneficial for sport participants? A multilevel analysis.

    Science.gov (United States)

    Van Hoye, Aurélie; Heuzé, Jean-Philippe; Van den Broucke, Stephan; Sarrazin, Philippe

    2016-12-01

    As major actors in sports activities, sports coaches can play a significant role in health education and contribute to the psychological well-being of young people. However, not all participants in sports activities experience sports positively, which reduces the potential benefits for health. The present study investigates if coaches' efforts to promote health increase young athletes' enjoyment, self-esteem and perceived health in daily life and decrease sport dropout. To control for the variability between teams and between clubs, multilevel modeling was applied. A sample of 342 young football players completed questionnaires assessing their perceptions of coaches' Health Promotion (HP) activities, enjoyment of sports, dropout intentions, self-esteem and perceived health in daily life. HP general score was positively related to enjoyment and perceived health as well as negatively dropout intentions. Players perceiving their coaches as promoting fair and play (Respect for oneself and others) scored higher on their perceptions of enjoyment in sport, self-esteem and self-reported health, and lower on dropout intentions. Moreover, players recognizing their coaches as encouraging their healthy lifestyle also reported higher perceptions of sport enjoyment, whereas player's perceived coaches' activities on substance use were associated with lower participants' enjoyment. These results support the importance of developing HP in sports clubs. Especially, promoting respect of oneself and others seems to be the more beneficial to sport participants. Copyright © 2016 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.

  19. Coach strategies for addressing psychosocial challenges during the return to sport from injury.

    Science.gov (United States)

    Podlog, Leslie; Dionigi, Rylee

    2010-09-01

    The purpose of this study was to examine coach strategies for addressing athletes' psychosocial challenges in returning to sport following injury rehabilitation. Qualitative interviews with eight elite coaches from the Western Australian Institute of Sport (WAIS) in Perth, Australia revealed that coaches facilitated athletes' return to sport from injury through a variety of means, but did not typically provide systematic forms of assistance. Coaches commented that the idiosyncratic nature of the injury experience meant that they needed to apply strategies consistent with athletes' particular psychosocial needs. Such strategies included: (a) coordination of a "team approach" to rehabilitation; (b) fostering open communication with athletes and treatment team members; (c) social support; (d) positive thinking and goal setting; and (e) role models. Analysis of these strategies revealed that coaches attempted to address competence, autonomy, and relatedness needs in facilitating athletes' return from injury. These findings suggest that self-determination theory may be a valuable approach for examining coach forms of assistance regarding athletes' return to competition following injury. Findings are discussed in relation to injury literature and self-determination theory. Suggestions for future research are also presented.

  20. Pursuing Improvement in Clinical Reasoning: Development of the Clinical Coaching Interactions Inventory.

    Science.gov (United States)

    Jessee, Mary Ann; Tanner, Christine A

    2016-09-01

    Clinical coaching has been identified as a signature pedagogy in nursing education. Recent findings indicate that clinical coaching interactions in the clinical learning environment fail to engage students in the higher order thinking skills believed to promote clinical reasoning. The Clinical Coaching Interactions Inventory (CCII) was based on evidence of supervisor questioning techniques, the Tanner clinical judgment model, Bloom's Taxonomy, and simulation evaluation tools. Content validity was established with expert assessment, student testing for clarity, and calculation of scale-content validity index/average (S-CVI/Ave). Reliability was established with Kuder-Richardson Formula 20 (KR-20). CVI (S-CVI/Ave) was .91, and KR-20 was .70. The CCII identified differences in clinical coaching behaviors in university faculty supervisors and staff nurse preceptor supervisors. The CCII advances the measurement of clinical coaching interactions from qualitative to quantitative. Ultimately, results from use of this inventory may facilitate the design of prelicensure clinical coaching strategies that promote the improvement of students' clinical reasoning skill. [J Nurs Educ. 2016;55(9):495-504.]. Copyright 2016, SLACK Incorporated.

  1. The survive and thrive program: encouraging coaching, mentoring, and peer learning among new local health officials.

    Science.gov (United States)

    Henry, Vonna; Sarpy, Sue Ann; Green, Rachel; Kaplan, Seth; Bonzon, Ramon

    2010-01-01

    There is a need for programs tailored to train the approximately 300 new local health officials (LHOs) who emerge each year with the knowledge and skills needed to build, maintain, and enhance public health capacity and infrastructure. The Survive and Thrive program incorporates a curriculum that is designed to address the challenges faced by a new LHO. The Survive and Thrive program seeks to address these issues by leveraging the expertise of the current generation of local public health leadership by incorporating experienced LHOs as coaches. Coaching, mentoring, and peer assistance by seasoned LHOs is critical to these new learning opportunities. This article highlights aspects of the coaching component of Survive and Thrive program. Actual examples of its relevance to the professional growth and development of new LHOs and the coaches themselves are presented. The article also describes the novel approach of including coaches in evaluating program effectiveness. The Survive and Thrive program's coaching component can serve as a template for other public health leadership programs and related workforce development initiatives as well as a model to help facilitate lifelong learning of LHOs.

  2. The training of Olympic wrestling coaches: study of the sources of knowledge and essential training contents

    Directory of Open Access Journals (Sweden)

    Paulo Martins

    2017-08-01

    Full Text Available The aim of this study was to analyze the representation of wrestling coaches regarding the sources of knowledge and the training contents to be adopted during the training process of young wrestlers’ coaches. The study was based on Grossman’s (1990 model of professional knowledge for teaching and followed a qualitative, multiple case study methodology. Following a semi-structured script, six Olympic wrestling experts were interviewed in-depth, trying to identify the sources of knowledge that the coaches used for their training and what didactic-methodological contents they considered essential to play their role as coach. The analysis revealed that the coaches’ sources of professional knowledge were diverse, including academic training and professional experience as the main sources of access to professional knowledge. The coaches also pointed out that their first sources of knowledge were their experiences as competitive athletes. Finally, this study concludes that expert coaches must acquire a profound knowledge of the competition environment, seeking to optimize their influence on athletes, which should extend not only to the sport practice of the youngster – as an athlete – but also at the level of the athlete as a person.

  3. Soy Protein Scaffold Biomaterials for Tissue Engineering and Regenerative Medicine

    Science.gov (United States)

    Chien, Karen B.

    Developing functional biomaterials using highly processable materials with tailorable physical and bioactive properties is an ongoing challenge in tissue engineering. Soy protein is an abundant, natural resource with potential use for regenerative medicine applications. Preliminary studies show that soy protein can be physically modified and fabricated into various biocompatible constructs. However, optimized soy protein structures for tissue regeneration (i.e. 3D porous scaffolds) have not yet been designed. Furthermore, little work has established the in vivo biocompatibility of implanted soy protein and the benefit of using soy over other proteins including FDA-approved bovine collagen. In this work, freeze-drying and 3D printing fabrication processes were developed using commercially available soy protein to create porous scaffolds that improve cell growth and infiltration compared to other soy biomaterials previously reported. Characterization of scaffold structure, porosity, and mechanical/degradation properties was performed. In addition, the behavior of human mesenchymal stem cells seeded on various designed soy scaffolds was analyzed. Biological characterization of the cell-seeded scaffolds was performed to assess feasibility for use in liver tissue regeneration. The acute and humoral response of soy scaffolds implanted in an in vivo mouse subcutaneous model was also investigated. All fabricated soy scaffolds were modified using thermal, chemical, and enzymatic crosslinking to change properties and cell growth behavior. 3D printing allowed for control of scaffold pore size and geometry. Scaffold structure, porosity, and degradation rate significantly altered the in vivo response. Freeze-dried soy scaffolds had similar biocompatibility as freeze-dried collagen scaffolds of the same protein content. However, the soy scaffolds degraded at a much faster rate, minimizing immunogenicity. Interestingly, subcutaneously implanted soy scaffolds affected blood

  4. Consumer Perceptions of Digital Health Coaching

    Directory of Open Access Journals (Sweden)

    Ekaterina Volkova-Volkmar

    2015-10-01

    - The likelihood of the participant to consider general coaching for health and wellness, designed and tailored for them, on a 5-point Likert scale from 1- “extremely unlikely” to 5 – “extremely likely”, where 24.72% chose the “extremely likely” option. The perceived role of technology accounted for 13.5% (F(5,4880=152.86,p<.001 of the variance in the perceived usefulness of a digital coach. Post-hoc Tukey's HSD tests showed that participants who saw the role of technology as “coach” were significantly more likely to perceive digital coaching as useful (p<.01 for all group comparisons. New technology adopter levels accounted for 9.9% (F(4, 4878 = 134.70, p <.001 of the variance in the perceived usefulness of a digital coach. Post-hoc Tukey’s HSD tests showed that participants who reported to be “first adopters” were more likely to perceive digital coaching as useful (p<.001 for all group comparisons. Willingness to receive general health and wellness coaching, including programs tailored and designed for each specific user accounted for 25.3% (F(4, 4887 = 414.49, p<.001 and 22.1% (F(4, 4881 = 346.52, p<.001 respectively. For both factors, participants who ranked highest in their willingness to consider general health coaching found digital coaching more useful than other groups (p<.001 for all group comparisons. Gender, age, country of origin, income, reported state of general health, and other factors had negligible to no effect. Conclusions Our research shows that the perception of digital coaching does not vary between clean cut demographic groups, defined by gender or country of origin. Neither does the general health state pay a decisive factor. The factors that do impact user perception on digital coaching are mostly related to their attitude towards health coaching in general. Another set of influential factors are their opinion in digital technology and their readiness to explore new technological solutions.

  5. Menerapkan Coaching sebagai Gaya Kepemimpinan Masa Kini

    OpenAIRE

    Munthe, Rusli Ginting

    2015-01-01

    The objective of this paper is to explain the importance of managing talent of Generation Y. Generation Y has a very different characteristics with the previous generation. Organisations need to implement leadership style in order to develop and manage them as a talent. Thus, the appropriate leadership style to beable to develop the talents of generation Y is managing as a coach. Manager as coach will be able to improve the performance and develop subordinates of generation Y.

  6. Coaching for improved personal and organizational effectiveness

    International Nuclear Information System (INIS)

    Miller, K.; Williams, R.A.

    2002-01-01

    Leadership ability and highly developed interpersonal skills are essential for both organizational and personal effectiveness. High-performance organizations have typically taken an integrated approach to address these critical needs. One element of a comprehensive strategy to improve these key competencies is to provide both individual and work-group coaching. This paper describes what leaders at the Pt. Lepreau NGS have experienced while receiving personal and small group coaching, and the effect it has had on their overall performance effectiveness. (author)

  7. The philosophy and practice of coaching

    DEFF Research Database (Denmark)

    As coaching contunies to grow, there is a need for a deeper conversation about its current state and its future directions. This book makes an important contribution to this conversation in provocative yet grounded ways.......As coaching contunies to grow, there is a need for a deeper conversation about its current state and its future directions. This book makes an important contribution to this conversation in provocative yet grounded ways....

  8. COACHING A MINI-BASKETBALL TEAM

    Directory of Open Access Journals (Sweden)

    Mar\\u00EDa Ca\\u00F1adas

    2009-01-01

    Full Text Available This study arises from the importance of analyzing the coaching process and knowing how to coach in the first stages of sports initiation. The purpose of this study was to analyze how a basketball coach establishes teaching the game phases in youth categories, through the relationship between the pedagogical variables that define each of the coaching tasks. A total of 452 tasks, organized in 80 training sessions that were planned by a coach of mini-basketball (10-11 yearolds from the 2004-2005 season were analyzed. After a descriptive analysis of the game phase variable, a non-parametric inferential analysis (chi-square and contingency coefficient was carried out to study the relationships between the variables of the study (game phase, game situation, type of content, and content.The results make clear that for the coach that was analyzed, there is a disproportionate amount of work done on phases of offense to the detriment of defensive work. The aspects of the attack that are developed most are those without opposition, 1-on-0 (RAS=9.7 and to a lesser degree 1-on-1 (RAS=-10.7, although the opposite happens in the case of defensive fundamentals, 1-on-0 (RAS=-5.4 and 1-on-1 (RAS=12.3. A higher proportion of tasks without opposition, 1- on-0, were planned to work on individual offense technique (RAS=15.7, such as shooting. The analysis of the coaching process provides much information when generating sport teaching principles. The results have an important practical application, and they facilitate the process of continuing education and reflection on coaches' actions.

  9. Physician burnout: coaching a way out.

    Science.gov (United States)

    Gazelle, Gail; Liebschutz, Jane M; Riess, Helen

    2015-04-01

    Twenty-five to sixty percent of physicians report burnout across all specialties. Changes in the healthcare environment have created marked and growing external pressures. In addition, physicians are predisposed to burnout due to internal traits such as compulsiveness, guilt, and self-denial, and a medical culture that emphasizes perfectionism, denial of personal vulnerability, and delayed gratification. Professional coaching, long utilized in the business world, provides a results-oriented and stigma-free method to address burnout, primarily by increasing one's internal locus of control. Coaching enhances self-awareness, drawing on individual strengths, questioning self-defeating thoughts and beliefs, examining new perspectives, and aligning personal values with professional duties. Coaching utilizes established techniques to increase one's sense of accomplishment, purpose, and engagement, all critical in ameliorating burnout. Coaching presumes that the client already possesses strengths and skills to handle life's challenges, but is not accessing them maximally. Although an evidence base is not yet established, the theoretical basis of coaching's efficacy derives from the fields of positive psychology, mindfulness, and self-determination theory. Using a case example, this article demonstrates the potential of professional coaching to address physician burnout.

  10. Integrating technical and non-technical skills coaching in an acute trauma surgery team training: Is it too much?

    Science.gov (United States)

    Alken, Alexander; Luursema, Jan-Maarten; Weenk, Mariska; Yauw, Simon; Fluit, Cornelia; van Goor, Harry

    2017-08-25

    Research on effective integration of technical and non-technical skills in surgery team training is sparse. In a previous study we found that surgical teachers predominantly coached on technical and hardly on non-technical skills during the Definitive Surgical and Anesthetic Trauma Care (DSATC) integrated acute trauma surgery team training. This study aims to investigate whether the priming of teachers could increase the amount of non-technical skills coaching during such a training. Coaching activities of 12 surgical teachers were recorded on audio and video. Six teachers were primed on non-technical skills coaching prior to the training. Six others received no priming and served as controls. Blind observers reviewed the recordings of 2 training scenario's and scored whether the observed behaviors were directed on technical or non-technical skills. We compared the frequency of the non-technical skills coaching between the primed and the non-primed teachers and analyzed for differences according to the trainees' level of experience. Surgical teachers coached trainees during the highly realistic DSATC integrated acute trauma surgery team training. Trainees performed damage control surgery in operating teams on anesthetized porcine models during 6 training scenario's. Twelve experienced surgical teachers participated in this study. Coaching on non-technical skills was limited to about 5%. The primed teachers did not coach more often on non-technical skills than the non-primed teachers. We found no differences in the frequency of non-technical skills coaching based on the trainees' level of experience. Priming experienced surgical teachers does not increase the coaching on non-technical skills. The current DSATC acute trauma surgery team training seems too complex for integrating training on technical and non-technical skills. Patient care, Practice based learning and improvement. Copyright © 2017 Elsevier Inc. All rights reserved.

  11. Evaluation of a Theory-Based Intervention Aimed at Improving Coaches' Recommendations on Sports Nutrition to Their Athletes.

    Science.gov (United States)

    Jacob, Raphaëlle; Lamarche, Benoît; Provencher, Véronique; Laramée, Catherine; Valois, Pierre; Goulet, Claude; Drapeau, Vicky

    2016-08-01

    Coaches are a major source of nutrition information and influence for young athletes. Yet, most coaches do not have training in nutrition to properly guide their athletes. The aim of this study was to evaluate the effectiveness of an intervention aimed at improving the accuracy of coaches' recommendations on sports nutrition. This was a quasi-experimental study with a comparison group and an intervention group. Measurements were made at baseline, post-intervention, and after a 2-month follow-up period. Coaches' recommendations on sports nutrition during the follow-up period were recorded in a diary. High school coaches from various sports (n=41) were randomly assigned to a comparison group or an intervention group. Both groups attended two 90-minute sessions of a theory-based intervention targeting determinants of coaches' intention to provide recommendations on sports nutrition. The intervention group further received an algorithm that summarizes sports nutrition guidelines to help promote decision making on sports nutrition recommendations. Nutrition knowledge and accuracy of coaches' recommendations on sports nutrition. χ(2) analyses and t-tests were used to compare baseline characteristics; mixed and general linear model analyses were used to assess the change in response to the intervention and differences in behaviors, respectively. Coaches in the intervention vs comparison group provided more nutrition recommendations during the 2-month post-intervention period (mean number of recommendations per coach 25.7±22.0 vs 9.4±6.5, respectively; P=0.004) and recommendations had a greater accuracy (mean number of accurate recommendations per coach 22.4±19.9 [87.1%] vs 4.3±3.2 [46.1%], respectively; Psports nutrition knowledge level over time and helped them to provide more accurate recommendations on sports nutrition. Copyright © 2016 Academy of Nutrition and Dietetics. Published by Elsevier Inc. All rights reserved.

  12. Coaching im Zeitalter der Hyperkomplexität

    DEFF Research Database (Denmark)

    Stelter, Reinhard

    müssen wir damit leben, dass es immer schwieriger wird, einen Zustand von Klarheit, Sicherheit und Gewissheit zu erreichen. Dieses Defizit ist oft Ausgangspunkt für Coaching und coachinginspirierte Dialoge. Ein auf enge Ziele gerichtetes Coaching ist da oftmals fehl am Platz. Es gilt Nachhaltigkeit auch...... im Coaching anzustreben, eine Nachhaltigkeit, die auf Sinnhaftigkeit, Lebenswerte, Selbstidentität und transformatives Lernen gerichtet ist. Coach und Coachee treffen sich auf einer Meta-Position, und hier erfährt ein Coaching der dritten Generation, das Third-Generation Coaching (Stelter, 2014......), seine Brauchbarkeit. Beim Third Generation Coaching treffen sich Coach und Coachee in einer zeitweise symmetrischen Beziehung, sind füreinander Mit-Menschen, die sich über für sie bedeutungsvolle Werte und Sinngebungen austauschen. Coach und Coachee formen Sinn und Wirklichkeit in ihrer Dialog...

  13. The Effect of Coaches' Controlling Style on the Competitive Anxiety of Young Athletes.

    Science.gov (United States)

    Ramis, Yago; Torregrosa, Miquel; Viladrich, Carme; Cruz, Jaume

    2017-01-01

    Framed on a Self-Determination Theory perspective, the purpose of this study was to explore the predictive capacity of coaches' interpersonal controlling style on the competitive anxiety of young athletes, considering the mediating effect of the athletes' controlled motivation on this relationship. The sample consisted of 1166 athletes, aged between 9 and 18, who ranked their perceptions of coaches' controlling style, as well as the reasons for participating in sport and their competitive anxiety before or during competition. The structural models assessing both the direct effect of the controlling style on the anxiety and the complete mediated effect of the controlled motivation on this relationship revealed good fit indices. However, a significant difference of the chi-square was obtained when comparing these models to the partial mediation model, providing evidence of this last model to be more adequate to describe the relationship between coaches' controlling style and athletes' competitive anxiety. Positive significant effects of coach controlling style on the three forms of competitive anxiety were found (β CS - SA = 0.21, p anxiety in a direct way. Although this style also predicts athletes' motivation to participate, this indirect path seems to predict competitive anxiety in a less clear way. We discuss our results facing them up to Vallerand's hierarchical model postulates, focusing on the relevant influence of coaches on the young athletes' experience in the sport context.

  14. In Vivo Evaluation of 3D-Printed Polycaprolactone Scaffold Implantation Combined with β-TCP Powder for Alveolar Bone Augmentation in a Beagle Defect Model

    Directory of Open Access Journals (Sweden)

    Su A. Park

    2018-02-01

    Full Text Available Insufficient bone volume is one of the major challenges encountered by dentists after dental implant placement. This study aimed to evaluate the efficacy of a customized three-dimensional polycaprolactone (3D PCL scaffold implant fabricated with a 3D bio-printing system to facilitate rapid alveolar bone regeneration. Saddle-type bone defects were surgically created on the healed site after extracting premolars from the mandibles of four beagle dogs. The defects were radiologically examined using computed tomography for designing a customized 3D PCL scaffold block to fit the defect site. After fabricating 3D PCL scaffolds using rapid prototyping, the scaffolds were implanted into the alveolar bone defects along with β-tricalcium phosphate powder. In vivo analysis showed that the PCL blocks maintained the physical space and bone conductivity around the defects. In addition, no inflammatory infiltrates were observed around the scaffolds. However, new bone formation occurred adjacent to the scaffolds, rather than directly in contact with them. More new bone was observed around PCL blocks with 400/1200 lattices than around blocks with 400/400 lattices, but the difference was not significant. These results indicated the potential of 3D-printed porous PCL scaffolds to promote alveolar bone regeneration for defect healing in dentistry.

  15. Profile of high school strength and conditioning coaches.

    Science.gov (United States)

    Duehring, Michael D; Ebben, William P

    2010-02-01

    This study describes the results of a survey of high school strength and conditioning coaches (coaches). Thirty-nine of 128 (30.5%) coaches who were surveyed responded, representing 24 of the states of the United States. This survey examines the coaches' personal background information, compensation, job responsibilities, schools, facilities, the advantages and disadvantages of their positions, things they would like to change, and unique aspects of their program. The coaches averaged 6.74 and 14.89 years in their present positions and profession, respectively. All but one coach was certified, with 83% of the survey respondents certified by the National Strength and Conditioning Association. More than half of the coaches (54%) had master's degrees. Coaches worked an average of 9.13 hours a day, beginning and ending their work day on average at 7:34 and 5:07, am and pm, respectively. Coaches' salaries, normalized to a 12-month contract for comparison, averaged approximately 57,866 dollars and 55,214 dollars for those who were and were not part of the teacher's contract, respectively. Coaches who were not salaried were paid an average of $25.90 per hour. Coaches functioned in a variety of roles in their school in addition to their work as a strength and conditioning coach. The coaches' schools averaged approximately 1475 and 429 students and student athletes, respectively. The average strength and conditioning facility size was approximately 3631 ft, resulting in an average of 9.92 ft per athlete. Daily use averaged approximately 192 students. Coaches described the types of equipment and a variety of other facilities used to train athletes. Coaches also reported the advantages, disadvantages, and unique aspects of their work in high school strength and conditioning. Thirty-three of 39 coaches desired to continue as a high school strength and conditioning coach. A variety of other data are described. This study serves as a comprehensive source of information about

  16. High-Performance Cricket Coaches' Perceptions of an Educationally Informed Coach Education Programme

    Science.gov (United States)

    Galvan, Hugh; Fyall, Glenn; Culpan, Ian

    2012-01-01

    This paper reports and discusses the findings of a research project that investigated the recently conceptualized and implemented New Zealand Cricket, Level 3, high-performance coach education programme (CEP). A qualitative methodology was employed to gather data from six coaches involved in the CEP. In particular the researchers sought the…

  17. Dispositions of Elite-Level Australian Rugby Coaches towards Game Sense: Characteristics of Their Coaching Habitus

    Science.gov (United States)

    Light, Richard L.; Evans, John Robert

    2013-01-01

    Bourdieu's analytic concept of "habitus" has provided a valuable means of theorising coach development but is yet to be operationalised in empirical research. This article redresses this oversight by drawing on a larger study that inquired into how the "coaching 'habitus'" of elite-level Australian and New Zealand rugby coaches…

  18. Using Appreciative Inquiry to Explore Australian Football Coaches' Experience with Game Sense Coaching

    Science.gov (United States)

    Pill, Shane

    2015-01-01

    This paper reports on a project framed as a strengths-based case study in the field of sport coaching. The aim of this research was twofold. First, the project trialled. Appreciate Inquiry (AI) for sport pedagogy research and explain how AI can be used in sport coaching research. Second, using an appreciative perspective, the aim of the research…

  19. Coaching for Coherence: How Instructional Coaches Lead Change in the Evaluation Era

    Science.gov (United States)

    Woulfin, Sarah L.; Rigby, Jessica G.

    2017-01-01

    Instructional coaching has emerged as a prevalent and much-lauded instrument for capacity building. This essay argues that coaching can be aligned with teacher evaluation systems to work toward the effective implementation of instructional reforms, including Common Core State Standards and Next Generation Science Standards. Within the current…

  20. The New Educational Practice of Coaching, and the New Profession of the Coach

    Science.gov (United States)

    Klarin, Mikhail

    2015-01-01

    The article provides a detailed description of coaching as a form of human development and professional activities. The article was written in the midst of developing professional standards of coaching in the Russian Federation. [This article was translated by Peter Golub.

  1. Bargaining with Patriarchy: Former Female Coaches' Experiences and Their Decision to Leave Collegiate Coaching

    Science.gov (United States)

    Kamphoff, Cindra S.

    2010-01-01

    The purpose of this study was to better understand the experiences of former female coaches and their decision to terminate their careers. A feminist perspective and mixed-methods (surveys and interviews) were used to allow for a richer understanding of their experiences. The survey findings, which included 121 former female coaches, suggest that…

  2. Introducing a Writing Coach into an MBA Course: Perspectives of Students and Coaches

    Science.gov (United States)

    Rice-Bailey, Tammy; Baker, Kimberly S.

    2017-01-01

    This article describes an interdisciplinary partnership that resulted in the introduction of a writing coach into an MBA class on critical and analytical thinking. By examining the response to this role by the writing coaches themselves and by the students enrolled in three sections of this new course, this exploratory study endeavors to answer…

  3. Online Process Scaffolding and Students' Self-Regulated Learning with Hypermedia.

    Science.gov (United States)

    Azevedo, Roger; Cromley, Jennifer G.; Thomas, Leslie; Seibert, Diane; Tron, Myriam

    This study examined the role of different scaffolding instructional interventions in facilitating students' shift to more sophisticated mental models as indicated by both performance and process data. Undergraduate students (n=53) were randomly assigned to 1 of 3 scaffolding conditions (adaptive content and process scaffolding (ACPS), adaptive…

  4. Coaching Expertise: Science or Skills?

    Directory of Open Access Journals (Sweden)

    Alexander PAVLOV

    2015-06-01

    Full Text Available Today in most of Russian sport universit ies, the biological disciplines are carried out in accordance with traditional old - fashion ideas that have been formed half a century ago and do not correspond to reality. The sport theory and methods fundamentals are taught only in accordance with the the ory of periodization. Sporting theorists neglect many facts of low efficiency in the use of training periodization theory and results of research. They do not take into account the research of some sports specialists who developed and implemented more effe ctive method of training for elite athletes. One of the main aspects that a coach works with is the human organism. The foundation of the training process should be based on the law of development and human adaptation. Most of nowadays existing concepts of sports training ignore system laws of organism functions construction and existing laws adaptation. The laws of adaptation provide a basis for science - based integrated construction of training process. The modern theory and methodology of sports should be built on the basis of current scientific knowledge about the laws of functioning, adaptation, and development of the human organism. Adaptation laws provide opportunities for effective preparation of the athletes .

  5. Do people with existing chronic conditions benefit from telephone coaching? A rapid review.

    Science.gov (United States)

    Dennis, Sarah M; Harris, Mark; Lloyd, Jane; Powell Davies, Gawaine; Faruqi, Nighat; Zwar, Nicholas

    2013-06-01

    To examine the effectiveness of telephone-based coaching services for the management of patients with chronic diseases. A rapid scoping review of the published peer reviewed literature, using Medline, Embase, CINAHL, PsychNet and Scopus. We included studies involving people aged 18 years or over with one or more of the following chronic conditions: type 2 diabetes, congestive cardiac failure, coronary artery disease, chronic obstructive pulmonary disease and hypertension. Patients were identified as having multi-morbidity if they had an index chronic condition plus one or more other chronic condition. To be included in this review, the telephone coaching had to involve two-way conversations by telephone or video phone between a patient and a provider. Behaviour change, goal setting and empowerment are essential features of coaching. The review found 1756 papers, which was reduced to 30 after screening and relevance checks. Most coaching services were planned, as opposed to reactive, and targeted patients with complex needs who had one or more chronic disease. Several studies reported improvements in health behaviour, self-efficacy, health status and satisfaction with the service. More than one-third of the papers targeted vulnerable people and telephone coaching was found to be effective for these people. Telephone coaching for people with chronic conditions can improve health behaviour, self-efficacy and health status. This is especially true for vulnerable populations who had difficulty accessing health services. There is less evidence for improvements in quality of life and patient satisfaction with the service. The evidence for improvements in health service use was limited. This rapid scoping review found that telephone-based coaching can enhance the management of chronic disease, especially for vulnerable groups. Further work is needed to identify what models of telephone coaching are most effective according to patients' level of risk and co-morbidity. What

  6. Clarification of the Relationship between Awareness of Doping of Competitive Sports Coaches and Their Instructions to Prevent Doping.

    Science.gov (United States)

    Yamaguchi, Takumi; Horio, Ikuo; Goto, Masahiro; Miyauchi, Yoshirou; Izushi, Fumio

    2016-01-01

    It has been 6 years since the establishment of the position of "sports pharmacist" as one type of pharmacist. In the sporting world of Japan, sports pharmacists are expected to promote athletes' awareness of antidoping regulations and provide them with relevant education. However, currently, these pharmacists' main duty is to provide athletes and their coaches with guidance on medication. Using a model for the prediction of athletes' actions, we have worked to promote athletes' awareness of antidoping regulations and encourage sports pharmacists to perform relevant activities, such as antidoping education. As a result, we clarified that athletes' awareness regarding antidoping rules influences their actions when experiencing minor illnesses. In addition, we have proposed approaches to encourage athletes to undertake antidoping activities. The present study aimed to clarify competitive sports coaches' awareness of antidoping regulations, the instructions that those coaches give athletes when they experience minor illnesses, and coaches' awareness of athletes' usage of drugs and supplements. Analysis using a model for the prediction of actions revealed that to promote coaches' awareness of antidoping regulations, education aimed at raising their level of knowledge of doping is warranted. Furthermore, coaches were aware of the necessity of continuously providing athletes with antidoping instructions, but they did not keep sufficient track of athletes' usage of drugs and supplements. To encourage sports coaches to perform antidoping activities, it is effective to provide them with opportunities to develop their knowledge of doping prevention in their areas.

  7. The very real dangers of executive coaching.

    Science.gov (United States)

    Berglas, Steven

    2002-06-01

    A personal coach to help your most promising executives reach their potential--sounds good, doesn't it? But, according to Steven Berglas, executive coaches can make a bad situation worse. Because of their backgrounds and biases, they ignore psychological problems they don't understand. Companies need to consider psychotherapeutic intervention when the symptoms plaguing an executive are stubborn or severe. Executives with issues that require more than coaching come in many shapes and sizes. Consider Rob Bernstein, an executive vice president of sales at an automotive parts distributor. According to the CEO, Bernstein had just the right touch with clients but caused personnel problems inside the company. The last straw came when Bernstein publicly humiliated a mail clerk who had interrupted a meeting to ask someone to sign for a package. At that point, the CEO assigned Tom Davis to coach Bernstein. Davis, a former corporate lawyer, worked with Bernstein for four years. But Davis only exacerbated the problem by teaching Bernstein techniques for "handling" employees--methods that were condescending at best. While Bernstein appeared to be improving, he was in fact getting worse. Bernstein's real problems went undetected, and when his boss left the company, he was picked as the successor. Soon enough, Bernstein was again in trouble, suspected of embezzlement. This time, the CEO didn't call Davis; instead, he turned to the author, a trained psychotherapist, for help. Berglas soon realized that Bernstein had a serious narcissistic personality disorder and executive coaching could not help him. As that tale and others in the article teach us, executives to be coached should at the very least first receive a psychological evaluation. And company leaders should beware that executive coaches given free rein can end up wreaking personnel havoc.

  8. Macromolecular multi-chromophoric scaffolding

    NARCIS (Netherlands)

    Schwartz, E.; Schwartz, Erik; Le Gac, Stephane; le Gac, Severine; Cornelissen, Jeroen Johannes Lambertus Maria; Nolte, Roeland J.M.; Rowan, Alan E.

    2010-01-01

    This critical review describes recent efforts in the field of chromophoric scaffolding. The advances in this research area, with an emphasis on rigid scaffolds, for example, synthetic polymers, carbon nanotubes (CNTs), nucleic acids, and viruses, are presented (166 references).

  9. Coaching and feedback: enhancing communication teaching and learning in veterinary practice settings.

    Science.gov (United States)

    Adams, Cindy L; Kurtz, Suzanne

    2012-01-01

    Communication is a critical clinical skill closely linked to clinical reasoning, medical problem solving, and significant outcomes of care such as accuracy, efficiency, supportiveness, adherence to treatment plans, and client and veterinarian satisfaction. More than 40 years of research on communication and communication education in human medicine and, more recently, in veterinary medicine provide a substantive rationale for formal communication teaching in veterinary education. As a result, veterinary schools are beginning to invest in communication training. However, if communication training is to result in development of veterinary communication skills to a professional level of competence, there must be follow-through with effective communication modeling and coaching in practice settings. The purpose of this article is to move the communication modeling and coaching done in the "real world" of clinical practice to the next level. The development of skills for communication coaching and feedback is demanding. We begin by comparing communication coaching with what is required for teaching other clinical skills in practice settings. Examining both, what it takes to teach others (whether DVM students or veterinarians in practice for several years) and what it takes to enhance one's own communication skills and capacities, we consider the why, what, and how of communication coaching. We describe the use of teaching instruments to structure this work and give particular attention to how to engage in feedback sessions, since these elements are so critical in communication teaching and learning. We consider the preconditions necessary to initiate and sustain communication skills training in practice, including the need for a safe and supportive environment within which to implement communication coaching and feedback. Finally we discuss the challenges and opportunities unique to coaching and to building and delivering communication skills training in practice

  10. Professional development in coaching: towards a dynamic alliance of narrative and literature to transform the learning process

    OpenAIRE

    Eastman, Christine

    2016-01-01

    Coaching draws on disciplines such as psychology, management theory, and organisational development. From these disciplines, models that seek both focused solutions to problems and those that aim to effect transformative learning have been developed. My work with students has revealed some dissatisfaction with performance coaching models such as GROW (Whitmore, 2009) and a desire to connect more with their imagination and creativity. I offer a case study of working with mature students employ...

  11. Biomimetic Scaffolds for Osteogenesis

    Science.gov (United States)

    Yuan, Nance; Rezzadeh, Kameron S.; Lee, Justine C.

    2015-01-01

    Skeletal regenerative medicine emerged as a field of investigation to address large osseous deficiencies secondary to congenital, traumatic, and post-oncologic conditions. Although autologous bone grafts have been the gold standard for reconstruction of skeletal defects, donor site morbidity remains a significant limitation. To address these limitations, contemporary bone tissue engineering research aims to target delivery of osteogenic cells and growth factors in a defined three dimensional space using scaffolding material. Using bone as a template, biomimetic strategies in scaffold engineering unite organic and inorganic components in an optimal configuration to both support osteoinduction as well as osteoconduction. This article reviews the various structural and functional considerations behind the development of effective biomimetic scaffolds for osteogenesis and highlights strategies for enhancing osteogenesis. PMID:26413557

  12. Semiotic Scaffolding in Mathematics

    DEFF Research Database (Denmark)

    Johansen, Mikkel Willum; Misfeldt, Morten

    2015-01-01

    This paper investigates the notion of semiotic scaffolding in relation to mathematics by considering its influence on mathematical activities, and on the evolution of mathematics as a research field. We will do this by analyzing the role different representational forms play in mathematical...... cognition, and more broadly on mathematical activities. In the main part of the paper, we will present and analyze three different cases. For the first case, we investigate the semiotic scaffolding involved in pencil and paper multiplication. For the second case, we investigate how the development of new...... in both mathematical cognition and in the development of mathematics itself, but mathematical cognition cannot itself be reduced to the use of semiotic scaffolding....

  13. Assessing the organisational and individual strengths use and deficit improvement amongst sport coaches

    Directory of Open Access Journals (Sweden)

    Frederick W. Stander

    2013-11-01

    Research purpose: To (1 determine whether adapted versions of the Strengths Use and Deficit Improvement Questionnaire (SUDIQ and Utrecht Work Engagement Scale (UWES are valid and reliable, (2 determine the relationship of the SUDIQ dimensions in the nomological net, and (3 test a structural model. Motivation for the study: To gain a better understanding of the outcomes of following a balanced approach within a sport coaching context. Research design, approach and method: A cross-sectional research approach was used. An availability sample (N = 364 of teachers occupying roles as sport coaches from various schools across three provinces in South Africa was used. Structural equation modelling was used to test the factor structures and the structural model. Main findings: The results indicated a valid factor structure for the adapted SUDIQ and UWES. Relationships between the SUDIQ dimensions and job and personal resources were positive and significant. Individual strengths use was the strongest predictor of engagement. Individual deficit improvement and organisational strengths use were also significant predictors. Organisational deficit improvement did not significantly predict engagement. Practical/managerial implications: Evidence suggests the adapted SUDIQ and UWES can be utilised effectively in a sport coaching environment. Organisational strengths use is also important in managing engagement levels of sport coaches. Contribution/value-add: Valid and reliable measures were provided for use in a sport coaching environment. It substantiates the outcomes that can be gained by following a combined approach based on strength and deficit.

  14. Cost-Effectiveness of Health Coaching: An Integrative Review.

    Science.gov (United States)

    Hale, Rachel; Giese, Jeannie

    The purpose of this review was to evaluate published literature to distinguish how health coaching influences the cost of chronic disease management in insured adults with chronic conditions. An integrated literature review was conducted. MEDLINE, Business Source Complete, and OneSearch were searched for the years 2001-2016 utilizing the following key words: health coaching, health coaching AND insurance companies, health coaching AND cost, health coaching AND health insurance, and health coaching AND insurance cost. A total of 67 articles met inclusion criteria and were assessed for applicability. Of those, 27 articles were found to be relevant to the research question. The practice settings of these articles are mostly primary care and wellness programs. Throughout the literature, health coaching has been found effective in chronic disease management such as hypertension, diabetes, and hyperlipidemia. Studies evaluating the cost-effectiveness of health coaching are limited. The current literature does not clearly demonstrate that health coaching lowers expenditures and patient copayments in the short term but projects future savings. Health coaching has the potential to improve chronic disease management and lower health care expenditures. Further long-term research is needed to evaluate the cost-effectiveness of health coaching. It has been projected that the cost-effectiveness of health coaching will be long-term or over 12 months after initiating the health coaching program.

  15. Fracture behaviors of ceramic tissue scaffolds for load bearing applications

    Science.gov (United States)

    Entezari, Ali; Roohani-Esfahani, Seyed-Iman; Zhang, Zhongpu; Zreiqat, Hala; Dunstan, Colin R.; Li, Qing

    2016-07-01

    Healing large bone defects, especially in weight-bearing locations, remains a challenge using available synthetic ceramic scaffolds. Manufactured as a scaffold using 3D printing technology, Sr-HT-Gahnite at high porosity (66%) had demonstrated significantly improved compressive strength (53 ± 9 MPa) and toughness. Nevertheless, the main concern of ceramic scaffolds in general remains to be their inherent brittleness and low fracture strength in load bearing applications. Therefore, it is crucial to establish a robust numerical framework for predicting fracture strengths of such scaffolds. Since crack initiation and propagation plays a critical role on the fracture strength of ceramic structures, we employed extended finite element method (XFEM) to predict fracture behaviors of Sr-HT-Gahnite scaffolds. The correlation between experimental and numerical results proved the superiority of XFEM for quantifying fracture strength of scaffolds over conventional FEM. In addition to computer aided design (CAD) based modeling analyses, XFEM was conducted on micro-computed tomography (μCT) based models for fabricated scaffolds, which took into account the geometric variations induced by the fabrication process. Fracture strengths and crack paths predicted by the μCT-based XFEM analyses correlated well with relevant experimental results. The study provided an effective means for the prediction of fracture strength of porous ceramic structures, thereby facilitating design optimization of scaffolds.

  16. Silk fibroin porous scaffolds for nucleus pulposus tissue engineering

    International Nuclear Information System (INIS)

    Zeng, Chao; Yang, Qiang; Zhu, Meifeng; Du, Lilong; Zhang, Jiamin; Ma, Xinlong; Xu, Baoshan; Wang, Lianyong

    2014-01-01

    Intervertebral discs (IVDs) are structurally complex tissue that hold the vertebrae together and provide mobility to spine. The nucleus pulposus (NP) degeneration often results in degenerative IVD disease that is one of the most common causes of back and neck pain. Tissue engineered nucleus pulposus offers an alternative approach to regain the function of the degenerative IVD. The aim of this study is to determine the feasibility of porous silk fibroin (SF) scaffolds fabricated by paraffin-sphere-leaching methods with freeze-drying in the application of nucleus pulposus regeneration. The prepared scaffold possessed high porosity of 92.38 ± 5.12% and pore size of 165.00 ± 8.25 μm as well as high pore interconnectivity and appropriate mechanical properties. Rabbit NP cells were seeded and cultured on the SF scaffolds. Scanning electron microscopy, histology, biochemical assays and mechanical tests revealed that the porous scaffolds could provide an appropriate microstructure and environment to support adhesion, proliferation and infiltration of NP cells in vitro as well as the generation of extracellular matrix. The NP cell–scaffold construction could be preliminarily formed after subcutaneously implanted in a nude mice model. In conclusion, The SF porous scaffold offers a potential candidate for tissue engineered NP tissue. - Highlights: • Paraffin microsphere-leaching method is used to fabricate silk fibroin scaffold. • The scaffold has appropriate mechanical property, porosity and pore size • The scaffold supports growth and infiltration of nucleus pulposus cells. • Nucleus pulposus cells can secrete extracellular matrix in the scaffolds. • The scaffold is a potential candidate for tissue engineered nucleus pulposus

  17. Silk fibroin porous scaffolds for nucleus pulposus tissue engineering

    Energy Technology Data Exchange (ETDEWEB)

    Zeng, Chao; Yang, Qiang [Department of Spine Surgery, Tianjin Hospital, Tianjin 300211 (China); Tianjin Medical University, Tianjin 300070 (China); Zhu, Meifeng [The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071 (China); Du, Lilong [Department of Spine Surgery, Tianjin Hospital, Tianjin 300211 (China); Tianjin Medical University, Tianjin 300070 (China); Zhang, Jiamin [The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071 (China); Ma, Xinlong [Department of Spine Surgery, Tianjin Hospital, Tianjin 300211 (China); Xu, Baoshan, E-mail: xubaoshan99@126.com [Department of Spine Surgery, Tianjin Hospital, Tianjin 300211 (China); Wang, Lianyong, E-mail: wly@nankai.edu.cn [The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071 (China)

    2014-04-01

    Intervertebral discs (IVDs) are structurally complex tissue that hold the vertebrae together and provide mobility to spine. The nucleus pulposus (NP) degeneration often results in degenerative IVD disease that is one of the most common causes of back and neck pain. Tissue engineered nucleus pulposus offers an alternative approach to regain the function of the degenerative IVD. The aim of this study is to determine the feasibility of porous silk fibroin (SF) scaffolds fabricated by paraffin-sphere-leaching methods with freeze-drying in the application of nucleus pulposus regeneration. The prepared scaffold possessed high porosity of 92.38 ± 5.12% and pore size of 165.00 ± 8.25 μm as well as high pore interconnectivity and appropriate mechanical properties. Rabbit NP cells were seeded and cultured on the SF scaffolds. Scanning electron microscopy, histology, biochemical assays and mechanical tests revealed that the porous scaffolds could provide an appropriate microstructure and environment to support adhesion, proliferation and infiltration of NP cells in vitro as well as the generation of extracellular matrix. The NP cell–scaffold construction could be preliminarily formed after subcutaneously implanted in a nude mice model. In conclusion, The SF porous scaffold offers a potential candidate for tissue engineered NP tissue. - Highlights: • Paraffin microsphere-leaching method is used to fabricate silk fibroin scaffold. • The scaffold has appropriate mechanical property, porosity and pore size • The scaffold supports growth and infiltration of nucleus pulposus cells. • Nucleus pulposus cells can secrete extracellular matrix in the scaffolds. • The scaffold is a potential candidate for tissue engineered nucleus pulposus.

  18. Influence of scaffold design on 3D printed cell constructs.

    Science.gov (United States)

    Souness, Auryn; Zamboni, Fernanda; Walker, Gavin M; Collins, Maurice N

    2018-02-01

    Additive manufacturing is currently receiving significant attention in the field of tissue engineering and biomaterial science. The development of precise, affordable 3D printing technologies has provided a new platform for novel research to be undertaken in 3D scaffold design and fabrication. In the past, a number of 3D scaffold designs have been fabricated to investigate the potential of a 3D printed scaffold as a construct which could support cellular life. These studies have shown promising results; however, few studies have utilized a low-cost desktop 3D printing technology as a potential rapid manufacturing route for different scaffold designs. Here six scaffold designs were manufactured using a Fused deposition modeling, a "bottom-up" solid freeform fabrication approach, to determine optimal scaffold architecture for three-dimensional cell growth. The scaffolds, produced from PLA, are coated using pullulan and hyaluronic acid to assess the coating influence on cell proliferation and metabolic rate. Scaffolds are characterized both pre- and postprocessing using water uptake analysis, mechanical testing, and morphological evaluation to study the inter-relationships between the printing process, scaffold design, and scaffold properties. It was found that there were key differences between each scaffold design in terms of porosity, diffusivity, swellability, and compressive strength. An optimal design was chosen based on these physical measurements which were then weighted in accordance to design importance based on literature and utilizing a design matrix technique. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 533-545, 2018. © 2017 Wiley Periodicals, Inc.

  19. Developing a Successful Coaching Philosophy: A Step-by-Step Approach

    Science.gov (United States)

    Van Mullem, Pete; Brunner, Dave

    2013-01-01

    The coaching profession demands a high level of accountability and responsibility for the coach. Challenged to achieve success on the scoreboard and promote the positive personal growth of the athlete, a coach seeks guidance from their coaching philosophy. A coaching philosophy is built on a set of standards by which a coach influences, teaches,…

  20. Psycho-social factors determining success in high-performance triathlon: compared perception in the coach-athlete pair.

    Science.gov (United States)

    Ruiz-Tendero, Germán; Salinero Martín, Juan José

    2012-12-01

    High-level sport can be analyzed using the complex system model, in which performance is constrained by many factors. Coaches' and athletes' perceptions of important positive and negative factors affecting performance were compared. Participants were 48 high-level international triathletes (n = 34) and their coaches (n = 14). They were personally interviewed via a questionnaire designed by four accredited experts, who selected groups of both positive and negative factors affecting performance. A list of factors was developed, in order of greater to lesser importance in the opinion of athletes and coaches, for subsequent analysis. Two ranked lists (positive and negative factors) indicated that athletes appear to rate personal environment factors (family, teammates, lack of support from relatives) higher, while the coaches tended to give more importance to technical and institutional aspects (institutional support, coach, medical support). There was complete agreement between coaches and triathletes about the top five positive factors. Negative factor agreement was somewhat lower (agreement on 3/5 factors). The most important positive factor for coaches and athletes was "dedication/engagement," while the most important factor adversely affecting performance was "injuries".

  1. Bone tissue engineering scaffolding: computer-aided scaffolding techniques.

    Science.gov (United States)

    Thavornyutikarn, Boonlom; Chantarapanich, Nattapon; Sitthiseripratip, Kriskrai; Thouas, George A; Chen, Qizhi

    Tissue engineering is essentially a technique for imitating nature. Natural tissues consist of three components: cells, signalling systems (e.g. growth factors) and extracellular matrix (ECM). The ECM forms a scaffold for its cells. Hence, the engineered tissue construct is an artificial scaffold populated with living cells and signalling molecules. A huge effort has been invested in bone tissue engineering, in which a highly porous scaffold plays a critical role in guiding bone and vascular tissue growth and regeneration in three dimensions. In the last two decades, numerous scaffolding techniques have been developed to fabricate highly interconnective, porous scaffolds for bone tissue engineering applications. This review provides an update on the progress of foaming technology of biomaterials, with a special attention being focused on computer-aided manufacturing (Andrade et al. 2002) techniques. This article starts with a brief introduction of tissue engineering (Bone tissue engineering and scaffolds) and scaffolding materials (Biomaterials used in bone tissue engineering). After a brief reviews on conventional scaffolding techniques (Conventional scaffolding techniques), a number of CAM techniques are reviewed in great detail. For each technique, the structure and mechanical integrity of fabricated scaffolds are discussed in detail. Finally, the advantaged and disadvantage of these techniques are compared (Comparison of scaffolding techniques) and summarised (Summary).

  2. Applying Humanistic Learning Theory: The "Art" of Coaching

    Science.gov (United States)

    Connolly, Graeme J.

    2016-01-01

    The purpose of this article is to apply specific principles of psychology to the coaching process. More specifically, it is about becoming a productive and effective coach, who positively affects the athletic careers and lives of young people.

  3. Coaches' expectations and beliefs regarding benefits of youth sport participation.

    Science.gov (United States)

    Lesyk, J J; Kornspan, A S

    2000-04-01

    Although many have investigated why children participate in sport, little is known about what adults expect children to gain from participation. The present purpose was to examine coaches' expectations of what children should gain from participation in sport and the extent to which coaches believe that these expectations are actually fulfilled. Participants included 109 youth sport coaches who completed a survey packet consisting of a demographic information questionnaire and the Ohio Sport Satisfaction Index. Analysis indicated coaches ranked the variables of having fun, learning life skills, being part of a team, developing confidence, and the excitement of competition as the most important outcomes for the youth they coach. Generally, coaches believe that their expectations are being fulfilled. Coaches' sex and years of coaching were not significantly related to any of the criterion variables in the present study.

  4. First Steps in Using REBT in Life Coaching

    OpenAIRE

    Dryden, Windy

    2011-01-01

    This step-by-step guide shows the Life Coach how to help coachees deal with any emotional problems that might prevent them from achieving their life goals, using the theory and practice of REBT adapted to a coaching setting.

  5. The group coach as a socializing agent for integration?

    DEFF Research Database (Denmark)

    Stelter, Reinhard; Ryom, Knud

    The group coach as a socializing agent for integration? Reinhard Stelter, Knud Ryom University of Copenhagen, Denmark This project’s goal was to strengthen the life situation of migrant boys through the involvement of voluntary coaches. For this aim, group coaching was introduced as part of a two...... to see the voluntary coach as an agent of the system. The group coach as a socializing agent for integration?. Available from: https://www.researchgate.net/publication/280096643_The_group_coach_as_a_socializing_agent_for_integration [accessed Sep 15, 2017].......-educated coaches and began in September 2013. All boys from 6th to 9th grade were offered group coaching on a regular basis as part of their school education. The intervention will finish in June 2015. The ambition was to provide a reflective and collaborative space where the whole group helped to support each...

  6. A radiopaque electrospun scaffold for engineering fibrous musculoskeletal tissues: Scaffold characterization and in vivo applications.

    Science.gov (United States)

    Martin, John T; Milby, Andrew H; Ikuta, Kensuke; Poudel, Subash; Pfeifer, Christian G; Elliott, Dawn M; Smith, Harvey E; Mauck, Robert L

    2015-10-01

    Tissue engineering strategies have emerged in response to the growing prevalence of chronic musculoskeletal conditions, with many of these regenerative methods currently being evaluated in translational animal models. Engineered replacements for fibrous tissues such as the meniscus, annulus fibrosus, tendons, and ligaments are subjected to challenging physiologic loads, and are difficult to track in vivo using standard techniques. The diagnosis and treatment of musculoskeletal conditions depends heavily on radiographic assessment, and a number of currently available implants utilize radiopaque markers to facilitate in vivo imaging. In this study, we developed a nanofibrous scaffold in which individual fibers included radiopaque nanoparticles. Inclusion of radiopaque particles increased the tensile modulus of the scaffold and imparted radiation attenuation within the range of cortical bone. When scaffolds were seeded with bovine mesenchymal stem cells in vitro, there was no change in cell proliferation and no evidence of promiscuous conversion to an osteogenic phenotype. Scaffolds were implanted ex vivo in a model of a meniscal tear in a bovine joint and in vivo in a model of total disc replacement in the rat coccygeal spine (tail), and were visualized via fluoroscopy and microcomputed tomography. In the disc replacement model, histological analysis at 4 weeks showed that the scaffold was biocompatible and supported the deposition of fibrous tissue in vivo. Nanofibrous scaffolds that include radiopaque nanoparticles provide a biocompatible template with sufficient radiopacity for in vivo visualization in both small and large animal models. This radiopacity may facilitate image-guided implantation and non-invasive long-term evaluation of scaffold location and performance. The healing capacity of fibrous musculoskeletal tissues is limited, and injury or degeneration of these tissues compromises the standard of living of millions in the US. Tissue engineering repair

  7. Assessing Chinese coach drivers' fitness to drive: The development of a toolkit based on cognition measurements.

    Science.gov (United States)

    Wang, Huarong; Mo, Xian; Wang, Ying; Liu, Ruixue; Qiu, Peiyu; Dai, Jiajun

    2016-10-01

    Road traffic accidents resulting in group deaths and injuries are often related to coach drivers' inappropriate operations and behaviors. Thus, the evaluation of coach drivers' fitness to drive is an important measure for improving the safety of public transportation. Previous related research focused on drivers' age and health condition. Comprehensive studies about commercial drivers' cognitive capacities are limited. This study developed a toolkit consisting of nine cognition measurements across driver perception/sensation, attention, and reaction. A total of 1413 licensed coach drivers in Jiangsu Province, China were investigated and tested. Results indicated that drivers with accident history within three years performed overwhelmingly worse (p<0.001) on dark adaptation, dynamic visual acuity, depth perception, attention concentration, attention span, and significantly worse (p<0.05) on reaction to complex tasks compared with drivers with clear accident records. These findings supported that in the assessment of fitness to drive, cognitive capacities are sensitive to the detection of drivers with accident proneness. We first developed a simple evaluation model based on the percentile distribution of all single measurements, which defined the normal range of "fit-to-drive" by eliminating a 5% tail of each measurement. A comprehensive evaluation model was later constructed based on the kernel principal component analysis, in which the eliminated 5% tail was calculated from on integrated index. Methods to categorizing qualified, good, and excellent coach drivers and criteria for evaluating and training Chinese coach drivers' fitness to drive were also proposed. Copyright © 2015 Elsevier Ltd. All rights reserved.

  8. The training of young footballers’ coaches

    Directory of Open Access Journals (Sweden)

    Manuel Tomás Abad Robles

    2013-07-01

    Full Text Available This study analysed the initial and ongoing training, as well as the training needs of coaches of young footballers in Andalusia. With this objective, 10 experts in youth football and in the training of football coaches were interviewed. Most of those interviewed considered the studies linked to physical education and sport as a very positive factor when it came to carrying out football-related instruction. In the training of the youth football coach, the experts highlighted the contents connected to medical and biological sciences, sports training, base-level physical education and the period of practicals. Furthermore, the specialists estimated that, in permanent training, informal strategies were just as relevant as formal ones, and they indicated that the following were necessary aspects of training: methodology, technical-tactical aspects, psychology, physical preparation and base-level physical education.

  9. Eine ökonomische Analyse der wissensintensiven Dienstleistung Coaching

    OpenAIRE

    Gross, Peter-Paul

    2013-01-01

    Über die letzten 20 Jahre hat sich Coaching zu einer der gefragtesten Personalentwicklungsdienstleistungen entwickelt. Aus dem Sport kommend, wurde Coaching zunächst als exklusive Maßnahme für Top-Führungskräfte konzipiert. In den 1980er Jahren wurden erste Angebote von Top-Executive-Coaching, orientiert an amerikanischen Vorbildern, in Deutschland angeboten. Bis heute hat Coaching darauf einen unglaublichen Boom erlebt. Da ...

  10. Enhancing Student Learning through Scaffolded Client Projects

    Science.gov (United States)

    Tomlinson, Elizabeth

    2017-01-01

    This article reports on the current status of client projects (CPs) in business communication courses, provides a scaffolded model for implementing CP, and assesses student learning in CPs. Using a longitudinal mixed method research design, survey data and qualitative materials from six semesters are presented. The instructor survey indicated need…

  11. Bionic Design, Materials and Performance of Bone Tissue Scaffolds

    Directory of Open Access Journals (Sweden)

    Tong Wu

    2017-10-01

    Full Text Available Design, materials, and performance are important factors in the research of bone tissue scaffolds. This work briefly describes the bone scaffolds and their anatomic structure, as well as their biological and mechanical characteristics. Furthermore, we reviewed the characteristics of metal materials, inorganic materials, organic polymer materials, and composite materials. The importance of the bionic design in preoperative diagnosis models and customized bone scaffolds was also discussed, addressing both the bionic structure design (macro and micro structure and the bionic performance design (mechanical performance and biological performance. Materials and performance are the two main problems in the development of customized bone scaffolds. Bionic design is an effective way to solve these problems, which could improve the clinical application of bone scaffolds, by creating a balance between mechanical performance and biological performance.

  12. Bionic Design, Materials and Performance of Bone Tissue Scaffolds.

    Science.gov (United States)

    Wu, Tong; Yu, Suihuai; Chen, Dengkai; Wang, Yanen

    2017-10-17

    Design, materials, and performance are important factors in the research of bone tissue scaffolds. This work briefly describes the bone scaffolds and their anatomic structure, as well as their biological and mechanical characteristics. Furthermore, we reviewed the characteristics of metal materials, inorganic materials, organic polymer materials, and composite materials. The importance of the bionic design in preoperative diagnosis models and customized bone scaffolds was also discussed, addressing both the bionic structure design (macro and micro structure) and the bionic performance design (mechanical performance and biological performance). Materials and performance are the two main problems in the development of customized bone scaffolds. Bionic design is an effective way to solve these problems, which could improve the clinical application of bone scaffolds, by creating a balance between mechanical performance and biological performance.

  13. Evaluating a training programme for executive coaches

    Directory of Open Access Journals (Sweden)

    Karolyne Beets

    2012-07-01

    Full Text Available Orientation: The evaluation of training programmes provides methodological and logistical challenges to evaluators and human resource (HR managers. The training of executive coaches is no exception in this regard. Research purpose: The study aimed to investigate one particular aspect of the results of an executive coach training programme, and the extent to which knowledge, skills and attitudes acquired during the programme were applied in practical settings. Motivation for the study: Too little is known in South Africa about the effectiveness of training programmes, including executive coach training programmes. There is a need to demonstrate methodological approaches that would provide valid and reliable data. Research design, approach and method: The success case method (SCM was used to guide the study, consisting first of a survey of 80 participants in the training programme, followed by eight interviews to compare successful with less successful cases of skills transfer. Main findings: All six successful coaches were applying the proximal outcomes from the training with good results, with several valuable consequences resulting from the training. Barriers to successful implementation included personal circumstances and unfulfilled expectations of the programme content. Practical/managerial implications: Aspects of the training programme that could be improved included: the buddy selection system, more individualised feedback about self-development, closer supervision, and more support from programme managers. Contribution/value-add: This evaluation contributes to the evaluation literature by providing a documented exploration of a systematic application of the SCM. It also contributes to the coach training literature by providing a systematic evaluation of a coach training intervention in South Africa.

  14. Impact of Managers' Coaching Conversations on Staff Knowledge Use and Performance in Long-Term Care Settings.

    Science.gov (United States)

    Cummings, Greta G; Hewko, Sarah J; Wang, Mengzhe; Wong, Carol A; Laschinger, Heather K Spence; Estabrooks, Carole A

    2018-02-01

    Extended lifespans and complex resident care needs have amplified resource demands on nursing homes. Nurse managers play an important role in staff job satisfaction, research use, and resident outcomes. Coaching skills, developed through leadership skill-building, have been shown to be of value in nursing. To test a theoretical model of nursing home staff perceptions of their work context, their managers' use of coaching conversations, and their use of instrumental, conceptual and persuasive research. Using a two-group crossover design, 33 managers employed in seven Canadian nursing homes were invited to attend a 2-day coaching development workshop. Survey data were collected from managers and staff at three time points; we analyzed staff data (n = 333), collected after managers had completed the workshop. We used structural equation modeling to test our theoretical model of contextual characteristics as causal variables, managers' characteristics, and coaching behaviors as mediating variables and staff use of research, job satisfaction, and burnout as outcome variables. The theoretical model fit the data well (χ 2 = 58, df = 43, p = .06) indicating no significant differences between data and model-implied matrices. Resonant leadership (a relational approach to influencing change) had the strongest significant relationship with manager support, which in turn influenced frequency of coaching conversations. Coaching conversations had a positive, non-significant relationship with staff persuasive use of research, which in turn significantly increased instrumental research use. Importantly, coaching conversations were significantly, negatively related to job satisfaction. Our findings add to growing research exploring the role of context and leadership in influencing job satisfaction and use of research by healthcare practitioners. One-on-one coaching conversations may be difficult for staff not used to participating in such conversations. Resonant leadership, as

  15. Sports Coaches as "Dangerous Individuals"--Practice as Governmentality

    Science.gov (United States)

    Taylor, William George; Piper, Heather; Garratt, Dean

    2016-01-01

    Recent concern surrounding sports coaches' interaction with young people has reflected a fundamental change in the way coaches and others regard the role of sports. In this paper, we consider the identification and definition of the contemporary sports coach (whether acting in a professional or volunteer capacity) as, in Foucault's term, a…

  16. Coaching, lean processes and the concept of flow

    DEFF Research Database (Denmark)

    Skytte Gørtz, Kim Erik

    2008-01-01

    The chapter takes us inside Nordea Bank to look at how coaching was used to support their leadership development as they underwent a major change effort implementation. Drawing on the literature on Lean processes, flow and coaching, it demonstrates some of the challenges and opportunities...... of working with coaching in a systematic way across broader initiatives in organizations....

  17. Leadership and psychological roles of female coaches in sports and ...

    African Journals Online (AJOL)

    The purpose of this paper is to discuss the leadership and psychological roles of female coaches. More specifically, it literally reviewed the roles of gender in coaching sports and physical education classes. Coaching clearly involves more than educating athletes about technical aspects of their sports. In attempting to elicit ...

  18. Developing a competency scale for sport coaches | De Klerk ...

    African Journals Online (AJOL)

    The findings of the study provide important insights into the operational competencies required by sport coaches based on an empirical investigation of the perceptions of sport coaches. The findings of this study can be implemented to develop training programmes for sport coaches; develop performance appraisal tools ...

  19. Progress in Literacy Coaching Success--A Dozen Years On

    Science.gov (United States)

    Toll, Cathy A.

    2018-01-01

    Literacy coaches are most successful when they: develop strong, trusting relationships; provide clarity about their roles; communicate well; spend much of their time in coaching conversations; and monitor their perspectives about their work and those with whom they work. However, challenges still persist for literacy coaches, particularly in…

  20. Program Orientation for High School Sport Coaches. Position Statement

    Science.gov (United States)

    National Association for Sport and Physical Education, 2005

    2005-01-01

    The National Association for Sport and Physical Education (NASPE) believes that prior to the start of each season, all high school head coaches, assistant coaches, and volunteer coaches should be required to participate in a comprehensive orientation to the sport program. This orientation should be planned and conducted by the athletic director or…