Concept Of Feedback Research Articles

Language Teachers’ Conceptions of Intelligence and their Roles in Teacher Care and Teacher Feedback

The purpose of this study was to find the relationships among teachers’ conceptions of intelligence, teacher care, and teacher feedback in the realm of English Language Teaching (ELT). To this aim, three scales were developed to measure the aforementioned constructs. The participants consisted of 81 English as a Foreign Language (EFL) teachers and their 426 students who were learning English in private language institutes. The scales were validated by Confirmatory Factor Analysis (CFA) and the correlations among their subscales were investigated. The findings suggested that modularity, increasability, and applied ELT are associated with the nature and amount of teacher feedback and care as perceived by the students. Moreover, the results revealed that teachers’ conceptions of intelligence significantly affect how they evaluate their students (p < .05). In the end, implications were provided in the context of teaching.

Lessons in Performance Evaluation, Feedback, Creating Structure, Using Power, and Other Management Concepts: The Case of Creation in the Bible

Lessons in Performance Evaluation, Feedback, Creating Structure, Using Power, and Other Management Concepts: The Case of Creation in the Bible

Will Cost-Effectiveness Decisions Determine Future 4D Air Traffic Management Concepts?

Would an increased emphasis on cost-effectiveness and markedly reduced controller workload/costs determine the Four-Dimensional Air Traffic Management (4D ATM) Concept – a mindset change? Are there workable concepts that focus on flightpath conformance monitoring rather than a combination of conformance and hazard monitoring? Fundamental criteria for a conformance management-based system are identified to meet workload and cost goals. A ‘Global Navigation Satellite System (GNSS)/Feedback Concept’ is sketched, with radical ingredients to convert GNSS's accurate position fixes into accurate aircraft flightpath navigation. This eliminates air/ground trajectory synchronisation processing, and focuses conflict probing/planning tools on non-conforming flights. This concept would need to address key Human Factor concerns satisfactorily.

Manufacturing excellence and its critical factors

Purpose – The purpose of this paper is to identify and understand the relationship dynamics amongst the key factors impacting the tier-I auto manufacturing domain which is currently under severe strain. It is an approach for improving the pace of the manufacturing excellence journey. Design/methodology/approach – In total, 20 key factors impacting the manufacturing sector have been identified from the literature review coupled with the inputs from the experienced industry and academic experts. Interpretive structural modelling (ISM) approach has been adopted for the inter-relationship understanding and in stratifying the factors into drivers and independent clusters. The interpretation of the ISM results with respect to the current environment has also been carried out. Findings – Out of the 20 identified key factors, people- excellence related factors have been found to be the key drivers and global presence and visibility, operational cost reduction approach and customer responsiveness have a significant role to play in changing the pace of manufacturing excellence. Research limitations/implications – ISM framework does not incorporate the feedback concept and transition dynamics toward manufacturing excellence. These issues may be tested through System dynamics, which will help in identifying the cause and effect relationship between variables and model the transition toward manufacturing excellence. Practical implications – The manufacturing framework of 20 variables is a useful trigger to the strategic planners. The deep understanding of these variables in the current challenging environment is highly relevant and would facilitate the strategic industry leaders in their journey to excellence. Social implications – The manufacturing sector has been the growth engine for a nation's economy. If the manufacturing sector grows, the impact on the society will always be favorable as it results in greater degree of employment, better earning capacity and improved quality of life. Through this paper an attempt has been made to identify those key factors which could accelerate the manufacturing excellence pace and hence it is very relevant for the society at large. Originality/value – The paper provides some useful insight to manufacturing excellence framework and the application of ISM approach to it involving the experienced industry and academic experts.

Feedback Linearization of RF Power Amplifier for TETRA Standard

In wireless transmission systems, non-ideal response of different functional components along with power amplifier’s nonlinearity plays a major role in degrading the transmitter performance. Several parameters defines the performance of a wireless transmitter, such as adjacent channel power ratio (ACPR), error vector magnitude (EVM), spectral mask, etc., and the effect of non-ideal behaviour of the transmitter affects these parameters. For many standards these parameter specifications are defined such that the concern for transmitter linearization is very much relaxed. Standards like Terrestrial Trunked Radio (TETRA) specify strict regulation on these parameters. Therefore, the requirement of linearity is a great challenge for the design of the transmitter. Many linearization schemes is available for linearizing the nonlinear effect of a transmitter, and among those the Cartesian feedback technique is a well known concept for linearization of transmitter operating according to TETRA standard, as well as employing a narrowband operation. In our research, distortion effect of the transmitter has been analysed, and a practical demonstration of the linearization effect over distortion has been implemented using the Cartesian feedback concept.

A Formal Analysis of the Feedback Concept in Climate Models. Part II: Tangent Linear Systems in GCMs

Abstract Climate analysis is greatly simplified in perturbation analysis when filtered anomalies show linear behavior. In the first part (part I) of this two-part analysis, the formal tangent linear system (TLS) that handles linear behavior was used to demonstrate the strict equivalence between feedback and sensitivity analysis but at the cost of reducing the generality of its application to GCMs. In this second part, the full feedback analysis is introduced from the application of the so-called regression method of Gregory et al. The authors give a complete example of its use in the global analysis of the phase 5 of the Coupled Model Intercomparison Project (CMIP5) abrupt 4×CO2 and ramp experiments. A simple 1D model with only two ocean layers is shown to be able to explain the slow climate warming of the next century. An extension of the formal results in part I allows a new perturbation method to be designed in GCMs to determine the TLS in models. A series of illustrations demonstrates the advantages of implementing such a method in GCMs.

Clinical performance feedback and quality improvement opportunities for perioperative physicians.

Clinical performance feedback is an important component of the ongoing development and education of health care practitioners. For physicians, feedback about their clinical practice and outcomes is central to developing both confidence and competence at all stages of their medical careers. Cultural and financial infrastructures need to be in place, and the concept of feedback needs to be readily embraced and encouraged by clinical leadership and other stakeholders. The “buy-in” includes the expectation and view that feedback occurs on a routine basis, and those engaged in the process are both encouraged to participate and held accountable. Feedback must be part of an overarching quality improvement and physician education agenda; it is not meant to be an isolated, fragmented initiative that is typically undermined by lack of resources or systemic barriers to gaining improvement within programs. Effective feedback should be an integral part of clinical practice. Anesthesiologists and other perioperative physicians are identifying specialty-specific indicators that can be used when creating a broader quality improvement agenda. Placing a more immediate formal feedback strategy that focuses on goal-oriented behavior is rapidly becoming a mainstay. Physicians may use their individual feedback reports for reflection and designing personal development plans as lifelong learners and leaders in improving patient care.

Drugs and the brain, the MOOC (221.2)

How does a MOOC differ in value and impact from previous “distance‐learning” technologies? (1) A major additional possibility is the online community that springs up around the course. “Drugs and the Brain” brought some people with real‐life interest in drug mechanisms, and others with detailed scientific experience. Quantifying the letter group: of the students who finished the 2012‐2013 course and earned “statements of accomplishment”, ~ 10% of the students had PHD degrees and 7% had MD degrees, and ~ 7% had professional degrees in pharmacy. This online community requires detailed curation, moderation, and judgment. For the 2013‐2014 rendition, we plan to have two undergraduate TA's as curators. (2) A secondary possibility is the concept of instantaneous feedback on exams and quizzes. This can also be incorporated in previous technologies.What are limitations of the MOOC? (1) After all limitations in bandwidth and technology have been overcome, “internet time” will still be constrained by the fact that the world is round. The instructor will be asleep when some students want to communicate, and vice‐versa. (2) The course staff must invest formidable effort to optimize the learning experience. In this area, we include analyzing quiz responses, clicks, etc. We also include human evaluation of essays and other student responses. These are both wonderful problems, in the sense that we have too much data!

An anatomy of feedback: a phenomenographic investigation of undergraduate students' conceptions of feedback

The aim of this research was to investigate how undergraduate students conceptualise feedback, and compare this with research into conceptions of teaching and learning related phenomena in higher education. Using a phenomenographic approach, 28 physiotherapy students in New Zealand were interviewed about their experiences. Data analysis resulted in four qualitatively different experiences of feedback as: telling; guiding; developing understanding; and opening up a different perspective. The conceptions varied from a focus on one-way message transmission, to a more socially situated process. Analysis also showed several dimensions of feedback: focus of attention; agent of feedback; direction of communication; application over time; and range of application. The results provide useful information about variation in how students conceptualise feedback. This information may provide a better understanding of a process which is a key link between how students learn and how we teach.

Procedural Guidance Using Advance Imaging Techniques for Percutaneous Edge-to-Edge Mitral Valve Repair

The complexity of structural heart disease interventions such as edge-to edge mitral valve repair requires integration of multiple highly technical imaging modalities. Real time imaging with 3-dimensional (3D) echocardiography is a relatively new technique that first, allows clear volumetric imaging of target structures such as the mitral valve for both pre-procedural diagnosis and planning in patients with degenerative or functional mitral valve regurgitation. Secondly it provides intra-procedural, real-time panoramic volumetric 3D view of structural heart disease targets that facilitates eye-hand coordination while manipulating devices within the heart. X-ray fluoroscopy and RT 3D TEE images are used in combination to display specific targets and movement of catheter based technologies in 3D space. This integration requires at least two different image display monitors and mentally fusing the individual datasets by the operator. Combined display technology such as this, allow rotation and orientation of both dataset perspectives necessary to define targets and guidance of structural disease device procedures. The inherently easy concept of direct visual feedback and eye-hand coordination allows safe and efficient completion of MitraClip procedures. This technology is now merged into a single structural heart disease guidance mode called EchoNavigator(TM) (Philips Medical Imaging Andover, MA). These advanced imaging techniques have revolutionized the field of structural heart disease interventions and this experience is exemplified by a cooperative imaging approach used for guidance of edge-to-edge mitral valve repair procedures.

A Feedback-Based Approach for Mainstream Traffic Flow Control of Multiple Bottlenecks on Motorways

Mainstream traffic flow control (MTFC) enabled via variable speed limits (VSLs) has been investigated in previous studies, utilizing various control strategies. In this paper a new feedback control strategy is proposed for MTFC enabled via VSLs, considering multiple bottleneck locations. Results are evaluated using a validated macroscopic model. The feedback concept is robust and can be immediately implemented in the field as it considers practical and safety constraints.

Weak feedbacks, governance mismatches, and the robustness of social-ecological systems: an analysis of the Southwest Nova Scotia lobster fishery with comparison to Maine

The insights in Governing the Commons have provided foundational ideas for commons research in the past 23 years. However, the cases that Elinor Ostrom analyzed have been exposed to new social, economic, and ecological disturbances. What has happened to these cases since the 1980s? We reevaluated one of Ostrom's case studies, the lobster and groundfishery of Port Lameron, Southwest Nova Scotia (SWNS). Ostrom suggested that the self-governance of this fishery was fragile because the government did not recognize the rights of resource users to organize their own rules. In the Maine lobster fishery, however, the government formalized customary rules and decentralized power to fishing ports. We applied the concepts of feedback, governance mismatches, and the robustness of social-ecological systems to understand the pathway of institutional change in Port Lameron. We revisited the case of Port Lameron using marine harvesters' accounts collected from participant observation, informal interviews and surveys, and literature on fisheries policy and ecology in SWNS and Maine. We found that the government's failure to recognize the customary rights of harvesters to organize has weakened feedback between the operational level, where resource users interact with the resource, and the collective-choice level, where agents develop rules to influence the behavior of resource users. This has precipitated governance mismatches, which have led harvesters to believe that the decision-making process is detrimental to their livelihoods. Thus, harvesters rarely participate in decision making and resist regulatory change. In Maine, harvesters can influence decisions through participation, but there is a trade-off. With higher influence in decisions, captains have co-opted the decision-making process. Nevertheless, we suggest that the fisheries of SWNS are more vulnerable to social-ecological change because of weaker feedbacks than in Maine. Finally, we have discussed the potential benefits of polycentricity to both fisheries.

A Formal Analysis of the Feedback Concept in Climate Models. Part I: Exclusive and Inclusive Feedback Analyses*

Abstract Climate sensitivity and feedback are key concepts if the complex behavior of climate response to perturbation is to be interpreted in a simple way. They have also become an essential tool for comparing global circulation models and assessing the reason for the spread in their results. The authors introduce a formal basic model to analyze the practical methods used to infer climate feedbacks and sensitivity from GCMs. The tangent linear model is used first to critically review the standard methods of feedback analyses that have been used in the GCM community for 40 years now. This leads the authors to distinguish between exclusive feedback analyses as in the partial radiative perturbation approach and inclusive analyses as in the “feedback suppression” methods. This review explains the hypotheses needed to apply these methods with confidence. Attention is paid to the more recent regression technique applied to the abrupt 2×CO2 experiment. A numerical evaluation of it is given, related to the Lyapunov analysis of the dynamical feature of the regression. It is applied to the Planck response, determined in its most strict definition within the GCM. In this approach, the Planck feedback becomes a dynamical feedback among others and, as such, also has a fast response differing from its steady-state profile.

Early start: preschool politics in the United States

In the United States, preschool education is characterised by the dominance of a variegated private sector and patchy, uncoordinated oversight of the public sector. Tracing the history of the American debate over preschool education, Andrew Karch argues that the current state of decentralisation and fragmentation is the consequence of a chain of reactions and counter-reactions to policy decisions dating from the late 1960s and early 1970s, when preschool advocates did not achieve their vision for a comprehensive national program but did manage to foster initiatives at both the state and the national levels. Over time, beneficiaries of these initiatives and officials with jurisdiction over preschool education have become ardent defenders of the status quo. Today, advocates of greater government involvement must take on a diverse and entrenched set of constituencies resistant to policy change. In his close analysis of the politics of preschool education, Karch demonstrates how to apply the concepts of policy feedback, critical junctures, and venue shopping to the study of social policy.

BER Analysis of Decision-Feedback Multiple-Symbol Detection in Noncoherent MIMO Ultrawideband Systems

In this paper, we investigate noncoherent multiple-input-multiple-output (MIMO) ultrawideband (UWB) systems where the signal is encoded by differential space-time block code (DSTBC). DSTBC enables noncoherent MIMO UWB systems to achieve diversity gain. However, the traditional noncoherent symbol-by-symbol differential detection (DD) for DSTBC-UWB suffers from performance degradation compared with coherent detection. We introduce a noncoherent multiple-symbol detection (MSD) scheme to enhance the performance of DSTBC-UWB systems. Although the MSD scheme can boost the performance more as the observation window size becomes larger, the complexity of the exhaustive search for MSD also exponentially increases in terms of the window size. To decrease the computational complexity, the concept of decision feedback (DF) is introduced to the MSD for DSTBC-UWB in this paper. The resultant DF-MSD yields reasonable complexity and solid performance improvement. We provide the bit-error-rate analysis for the proposed DF-MSD. Both theoretical analysis and simulation results validate the proposed scheme.

Nonlinear stabilization in infinite dimension

Significant advances have taken place in the last few years in the development of control designs for nonlinear infinite-dimensional systems. Such systems typically take the form of nonlinear ODEs (ordinary differential equations) with delays and nonlinear PDEs (partial differential equations). In this article we review several representative but general results on nonlinear control in the infinite-dimensional setting. First we present designs for nonlinear ODEs with constant, time-varying or state-dependent input delays, which arise in numerous applications of control over networks. Second, we present a design for nonlinear ODEs with a wave (string) PDE at its input, which is motivated by the drilling dynamics in petroleum engineering. Third, we present a design for systems of (two) coupled nonlinear first-order hyperbolic PDEs, which is motivated by slugging flow dynamics in petroleum production in off-shore facilities. Our design and analysis methodologies are based on the concepts of nonlinear predictor feedback and nonlinear infinite-dimensional backstepping. We present several simulation examples that illustrate the design methodology.

Membrane-bound cytokine and feedforward regulation

Feedback and feedforward widely exist in life system, both of them are the basic processes of control system. While the concept of feedback has been widely used in life science, feedforward regulation was systematically studied in neurophysiology, awaiting further evidence and mechanism in molecular biology and cell biology. The authors put forward a hypothesis about the feedforward regulation of membrane bound macrophage colony stimulation factor (mM-CSF) on the basis of their previous work. This hypothesis might provide a new direction for the study on the biological effects of mM-CSF on leukemia and solid tumors, and contribute to the study on other membrane bound cytokines.

Diversity based relevance feedback for time series search

We propose a diversity based relevance feedback approach for time series data to improve the accuracy of search results. We first develop the concept of relevance feedback for time series based on dual-tree complex wavelet (CWT) and SAX based approaches. We aim to enhance the search quality by incorporating diversity in the results presented to the user for feedback. We then propose a method which utilizes the representation type as part of the feedback, as opposed to a human choosing based on a preprocessing or training phase. The proposed methods utilize a weighting to handle the relevance feedback of important properties for both single and multiple representation cases. Our experiments on a large variety of time series data sets show that the proposed diversity based relevance feedback improves the retrieval performance. Results confirm that representation feedback incorporates item diversity implicitly and achieves good performance even when using simple nearest neighbor as the retrieval method. To the best of our knowledge, this is the first study on diversification of time series search to improve retrieval accuracy and representation feedback.

지속 감항성 유지 프로그램 운영 경험의 항공기 설계와 인증 단계 적용

Continuous airworthiness system is comprised of regulations and procedures to assure the safety and reliability through the total stage of development, certification and operation of aircraft. The purpose of this system is not only to provide the guidelines that should be kept by manufacturers and operators, but also to evaluate the maintenance capability in every activity of safety related procedures. During the development process of the mid and large size aircraft, operational experience should be reflected systematically for a safer and more reliable product by using the meaningful data base from operation. The relationship of safety roles between manufacturer and operator is mutually complementary, and the roles of each function have an influence to the next step. Overall structure of the procedure contains the concept of continuous analysis and feedback to achieve highest degree of safety and reliability during the entire life of aircraft. Finally, this paper describes how the feedback is made and used for aircraft design from operational experience under the continuous analysis and surveillance system.

Neuromodulation for Neurogenic Bladder.

Although neuromodulation is well established for the treatment of non-neurogenic lower urinary tract symptoms, recent literature supports its use in the patient having LUTS associated with a neurologic condition. Sacral neuromodulation, in particular, may see new use as a modality to facilitate neurologic remodeling in spinal cord injured patients as well as children. As a therapeutic option, sacral neuromodulation and dorsal genital nerve stimulation may one day become more effective and more efficient utilizing the concept of closed-loop feedback, where electro-neurogram and bladder pressure data are incorporated into stimulation routines. In addition, some older therapies are reviewed that have recently demonstrated success in this patient population.