1,749 research outputs found
Evaluation as adventure: taking that risk
No full textHelen Simons traces the values that underpin her preferred methodology of case study and democratic evaluation to the central values she gained from the land of her birth. She looks back to consider what early experiences may have influenced her deep commitment to these values and how they impacted on her professional world as a teacher, a psychologist, and an evaluator. Her interview transcript which was a stimulus for this article is here: http://onlinelibrary.wiley.com/wol1/doi/10.1002/ev.20302/suppinfo. Read only. This should not be used in any form without explicit permission from the author.</p
Supervision training for professional counselors: An exploratory study
No full textEnhanced interest in supervision training has corresponded with recognition of supervision as a profession in its own right. For many practicing professional counselors, supervision training has traditionally been unavailable. The present research used the Clinical Supervision Questionnaire to evaluate the effect of a supervision training program on the supervision scores of 16 practicing professional counselors who participated in a supervision training program. Participants completed a pretraining and posttraining questionnaire. The findings revealed a significant difference between the pre- and posttraining results for the experimental group. This difference was maintained over a 6-month period. Practical and research implications are discussed
Consideration of risk in hydraulic design of bank protection using Reno matresses and riprap
No full textThis report discusses channel stabilization design by erosion protection measures considering risk analysis. Although many different erosion protection measures have been used, this report only considers rip-rap and wire enclosed rock (in mattresses) which are two of the most widely used methods of erosion protection. The purpose of erosion protection and channel stabilization is, of course, to maintain a channel and its banks and/or bed in a relatively fixed location to protect property, structures or other development from erosion related damage. Because rivers are quite dynamic and development continues along rivers and other types of channels, the need for erosion protection and bank stabilization will continue. Chapter II discusses briefly the dynamic nature of rivers and the need for erosion protection and channel stabilization. Various types of engineering analysis are required in developing an erosion protection design. These include hydrology, hydraulics, geomorphic, erosion and sediment transport. Where ship or barge traffic is of concern, ship-generated waves and other related impacts should also be accounted for. Chapter III discusses the data and analysis required for designing erosion protection and channel stabilization projects. This is by no means a comprehensive discussion of these topics but is meant to serve as an introduction and guide to the subject. The reader is encouraged to refer to the references given on these topics for further information. Chapter IV discusses common failure modes of erosion protection projects. There are a number of distinct and independent causes of failure. Each one alone can be sufficient to induce failure or they may, in some cases, act in concert to induce failure. A fairly comprehensive list of potential modes of failure is included ranging from the obvious to the more obscure and often overlooked. Flowing water causes forces or stresses to act on the bed and banks of a river. These are the forces that cause erosion and attempt to damage any erosion protection. They basically include shear, lift and drag forces acting on each individual particle on the bed and banks. The beginning portion of Chapter V analyzes the hydrodynamic forces due to flowing water acting on erosion protection works. Then based on the most important or frequent modes of failure and an evaluation of the forces acting on rip-rap or wire enclosed rock, methods to evaluate the probability of failure for each of the selected modes were developed. The remqinder of Chapter V covers this topic. The methods presented can be used either directly in a design application or as a tool in evaluating an existing design. Chapter VI outlines these methodologies in step by step format and then gives an example to follow for each procedure. Because the individual modes of failure can be treated independently, the total probability of failure is obtained by summing the individual probabilities. If the probability of failure thus obtained is too high for the given event, redesign is required. The next chapter (Chapter VII) is called "Risk Analysis." This type of an analysis actually is an economic optimization procedure but it has been previously called risk analysis in the literature. Risk analysis consists basically of designing a structure or whatever in order to minimize overall costs. These overall costs include both the initial construction costs as well as long term maintenance and repair costs. It is based on the logic that one may design something that can withstand the forces of a 1,000 year flood but the initial cost and therefore the total cost would be unreasonably high. One may also design a project to withstand the forces of a two year event which would have a very low initial cost but again the overall cost would be very high because of the frequency of maintenance and/or repair and replacement costs. The purpose of risk analysis is to find the minimum overall cost by varying the hydrologic return period of a project and associated designs and their costs in order to minimize the overall project cost. The design is selected that then gives this minimum cost or at least is in the range where costs are near the minimum. Chapter VIII contains the summary and conclusions. References and an appendix of terminology follows the final chapter
Analysis of watersheds and river systems: short course
No full textShort course: Analysis of Watersheds and River Systems, Session I and II, held on May 28-June 1, 1979 and June 4-June 8, 1979 at Colorado State University, Fort Collins, Colorado.Speakers: Dr. E. V. Richardson, Dr. David Duttweiller, Mr. Lee Mulkey, Dr. Stanley A. Schumm, Dr. Daryl B. Simons, Dr. Ross Carder.Includes bibliographical references.This short course is designed for individuals dealing with the analysis of watersheds and rivers. Practical applications concerning physical processes will be emphasized.Chapter 1. General introduction / Daryl B. Simons and Ruh-Ming Li -- Chapter 2. Introduction to watershed and river analysis / Daryl B. Simons and Ruh-Ming Li -- Chapter 3. Physical processes governing response of watersheds and rivers / Daryl B. Simons, Timothy J. Ward and Ruh-Ming Li -- Chapter 4. Sediment transport / H. W. Shen -- Chapter 5. Alluvial bed roughness / H. W. Shen -- Chapter 6. Overview of flood routing methods / Ruh-Ming Li and V. Miguel Ponce -- Chapter 7. Water routing and yield from watersheds, Part I and II / Ruh-Ming Li, Daryl B. Simons, and Kenneth G. Eggert -- Chapter 8. Water routing in rivers / Yung-Hai Chen -- Chapter 9. Stage discharge relations / Robert K. Simons, Ruh-Ming Li, and Daryl B. Simons -- Chapter 10. Watershed sediment yield / Ruh-Ming Li, Daryl B. Simons, and Timothy J. Ward -- Chapter 11. Unsteady sediment routing models in rivers / Yung-Hai Chen and Daryl B. Simons -- Chapter 12. Known discharge sediment routing / Glenn O. Brown and Ruh-Ming Li -- Chapter 13. Landslide potential delineation / Timothy J. Ward, Ruh-Ming Li, and Daryl B. Simons -- Chapter 14. Application of Kalman filtering in watershed and river analysis / Nguyen Duong -- Chapter 15. Handheld calculator programs for analysis / Kenneth G. Eggert, Ruh-Ming Li, and Daryl B. Simons -- Chapter 16. Overview of case studies and data management / Daryl B. Simons, Ruh-Ming Li, and Nguyen Duong -- Chapter 17. Canal and channel design and river response analysis / Daryl B. Simons, Ruh-Ming Li, and Yung-Hai Chen -- Chapter 18. Degradation and aggradation analysis / Ruh-Ming Li and Daryl B. Simons -- Chapter 19. Watershed best management analysis / Ruh-Ming Li, Timothy J. Ward, and Daryl B. Simons -- Chapter 20. Large river basin analysis: Yazoo River Sedimentation Study / Daryl B. Simons and Ruh-Ming Li
Factors Influencing the Success of Organisational Change Efforts: The Mediating Role of Individuals' Change Perceptions
No full textSchool self-evaluation for development: the case for and reflections on a training programme
No full textThis paper explores the case for schools conducting their own self-evaluation to serve the dual purpose of professional development within schools and accountability demands from external sources. The paper is in three parts. The first outlines the argument and benefits for schools conducting their own case study evaluation of their curriculum policies and practices, indicating how this approach is both similar to and different from external case study of schools. The second describes a training programme designed and implemented by the author to support schools in conducting evaluations that are valid, credible and useful. The third presents the participants' and author's reflections on the training and its outcomes and, through an example from one of the schools involved, illustrates what school self-evaluation looks like grounded in the actual experience of undertaking the process. From the evidence presented, the paper concludes that educational professionals, with appropriate support and training, are more than equal to the task of conducting credible and valid case study school self-evaluations
Twistors, the ASD Yang-Mills equations, and 4d Chern-Simons theory
No full textWe show that the approaches to integrable systems via 4d Chern-Simons theory
and via symmetry reductions of the anti-self-dual Yang-Mills equations are
closely related, at least classically. Following a suggestion of Kevin
Costello, we start from holomorphic Chern-Simons theory on twistor space,
defined with the help of a meromorphic (3,0)-form . If is
nowhere vanishing, it descends to a theory on 4d space-time with classical
equations of motion equivalent to the anti-self-dual Yang-Mills equations.
Examples include a 4d analogue of the Wess-Zumino-Witten model and a theory of
a Lie algebra valued scalar with a cubic two derivative interaction. Under
symmetry reduction, these yield actions for 2d integrable systems. On the other
hand, performing the symmetry reduction directly on twistor space reduces
holomorphic Chern-Simons theory to the 4d Chern-Simons theory with disorder
defects studied by Costello & Yamazaki. Finally we show that a similar
reduction by a single translation leads to a 5d partially holomorphic
Chern-Simons theory describing the Bogomolny equations.Comment: 40+14 pages; v2: substantial clarifications, typos corrected,
appendix added; v3: published in JHE
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