Displaying publications 1 - 20 of 129 in total

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  1. Tengku M.T. Sembok
    Imaging Retrieval is a retrieval strategy which is based on modal logic where documents are viewed as possible worlds which are related through an accessibility relation established using their similarity/dissimilarity coefficients. With these accessibility relation documents are grouped into clusters based on a nearest neighbour concept. The work reported in this paper sets out to implement and evaluate the imaging retrieval as a relevance feedback retrieval with nearest neighbour clusters. The retrieval is implemented in two variations: a one-stage and a multi-stage retrieval. The results obtained from the experiments are enough to show the viability and validity of this strategy and to support it as something worth looking into further.
    Capaian Imejan ialah satu strategi capaian yang berasaskan mantik yang menganggap dukumen sebagai dunia mungkin yang berkaitan. Kaitan antara dokumen ialah hubungan capaian yang dilahirkan dengan menggunakan koefisien persamaan. Dengan hubungan capaian ini dokumen boleh dikumpulkan dalam kelompok berdasarkan konsep jiran terdekat. Kerja yang dilaporkan dalam kertas ini bertujuan untuk melaksanakan dan menilai capaian imejan sebagai capaian kerelevanan bermaklum balas dengan kelompok jiran terdekat. Capaian tersebut dilaksanakan dalam dua bentuk: capaian satu tahap dan multi tahap. Hasil yang diperolehi dari eksperimen adalah mencukupi untuk menunjukkan keupayaan dan kesahan strategi ini dan memberi sokongan sebagai sesuatu yang patut dikaji dengan lebih mendalam.
    Matched MeSH terms: Feedback
  2. Ali SS, Moinuddin M, Raza K, Adil SH
    ScientificWorldJournal, 2014;2014:850189.
    PMID: 24987745 DOI: 10.1155/2014/850189
    Radial basis function neural networks are used in a variety of applications such as pattern recognition, nonlinear identification, control and time series prediction. In this paper, the learning algorithm of radial basis function neural networks is analyzed in a feedback structure. The robustness of the learning algorithm is discussed in the presence of uncertainties that might be due to noisy perturbations at the input or to modeling mismatch. An intelligent adaptation rule is developed for the learning rate of RBFNN which gives faster convergence via an estimate of error energy while giving guarantee to the l 2 stability governed by the upper bounding via small gain theorem. Simulation results are presented to support our theoretical development.
    Matched MeSH terms: Feedback*
  3. Spooner M, Reinhardt C, Boland F, McConkey S, Pawlikowska T
    Med Educ Online, 2024 Dec 31;29(1):2330259.
    PMID: 38529848 DOI: 10.1080/10872981.2024.2330259
    There are differing views on how learners' feedback-seeking behaviours (FSB) develop during training. With globalisation has come medical student migration and programme internationalisation. Western-derived educational practices may prove challenging for diverse learner populations. Exploring undergraduate activity using a model of FSB may give insight into how FSB evolves and the influence of situational factors, such as nationality and site of study. Our findings seek to inform medical school processes that support feedback literacy. Using a mixed methods approach, we collected questionnaire and interview data from final-year medical students in Ireland, Bahrain, and Malaysia. A validated questionnaire investigated relationships with FSB and goal orientation, leadership style preference, and perceived costs and benefits. Interviews with the same student population explored their FSB experiences in clinical practice, qualitatively, enriching this data. The data were integrated using the 'following the thread' technique. Three hundred and twenty-five of a total of 514 completed questionnaires and 57 interviews were analysed. Learning goal orientation (LGO), instrumental leadership and supportive leadership related positively to perceived feedback benefits (0.23, 0.2, and 0.31, respectively, p feedback benefits are related positively to feedback monitoring and inquiry (0.13 and 0.38, respectively, p feedback is unsupported in quantitative data, but was a strong theme in interviews, as was feedback avoidance, peer feedback, and unsupportive learning environment. No differences were observed across sub-groups based on gender, study site, or student nationality. Integrated analysis describes FSB: avoiding 'unsafe' feedback (first, do no harm) and overcoming barriers (beat the system) and goal-centred curation (shop around) to optimise benefits. Diverse medical students across three continents undertake FSB with careful navigation, as a valued but risky business, that is highly contextualised. Promoting a constructive FSB is complex. Overcoming outdated theory and practices on the wards remains a challenge to psychologically safe, learner-centred feedback.
    Matched MeSH terms: Formative Feedback; Feedback
  4. Lin GSS, Foong CC
    Eur J Dent Educ, 2024 Aug;28(3):816-824.
    PMID: 38622868 DOI: 10.1111/eje.13011
    INTRODUCTION: This study aimed to develop a module that incorporates hands-on and reflective feedback in teaching dental materials science and subsequently analyse undergraduate dental students' learning experiences with the module.

    MATERIALS AND METHODS: The module was developed based on the ADDIE (Analyse, Design, Develop, Implement, Evaluate) model. First, a need analysis was conducted, followed by designing the module to address the needs. Next, the module sought experts' feedback and was piloted. The revised module was implemented among all second-year undergraduate dental students. Finally, a validated questionnaire (5-point Likert scale items and open-ended questions) was used to evaluate students' learning experiences. The questionnaire Likert scale items were analysed descriptively, whereas open-ended responses were analysed using content analysis.

    RESULTS: In the analysis phase, a slight misalignment in cognitive competency levels was observed, alongside a need for the inclusion of more hands-on activities. In the design phase, learning objectives and resources were listed. Subsequently, a module consisting of four teaching sessions (3 h each) was developed, and the pilot test showed favourable feedback. The module was then implemented in small groups of 10-12 students. In the evaluation phase, 72 students (97% response rate) completed the questionnaire. The majority of students agreed with all items, with mean scores ranging from 4.53 to 4.72. Open-ended responses highlighted that hands-on activities and reflective feedback sessions were useful.

    CONCLUSION: Students demonstrated positive learning experiences after participating in the module, advocating for dental educators to consider more hands-on activities and reflective feedback sessions in teaching dental materials science.

    Matched MeSH terms: Formative Feedback; Feedback
  5. Harun, S.W., Hofmann, P., Schulzgen, A., Li, L., Peyghambarian, N., Ahmad, H.
    ASM Science Journal, 2008;2(2):149-152.
    MyJurnal
    A distributed feedback fibre laser made of highly Er-Yb co-doped phosphate glass fibre was demonstrated experimentally. The 45 mm long fibre laser device operated at 1540 nm with more than 50 dB side mode suppression ratio. However, the output power was still relatively lower due to un-optimized grating structure and thermal management.
    Matched MeSH terms: Feedback
  6. Muthukumar P, Balasubramaniam P, Ratnavelu K
    ISA Trans, 2018 Nov;82:51-61.
    PMID: 28755926 DOI: 10.1016/j.isatra.2017.07.007
    This paper proposes a generalized robust synchronization method for different dimensional fractional order dynamical systems with mismatched fractional derivatives in the presence of function uncertainty and external disturbance by a designing sliding mode controller. Based on the proposed theory of generalized robust synchronization criterion, a novel audio cryptosystem is proposed for sending or sharing voice messages secretly via insecure channel. Numerical examples are given to verify the potency of the proposed theories.
    Matched MeSH terms: Feedback
  7. Tee, Kelly Pei Leng, Cheah, Joyce Kim Sim
    MyJurnal
    Feedback is one of the most influential tools in the learning of writing. However, there are
    divided views on its impact on ESL writing. This article reviews past studies to explore the various
    types of written feedback and its effectiveness. Firstly, it discusses the feedback role in ESL students’
    writing, followed by the types of feedback. Furthermore, it highlights the type of feedback which is
    useful and effective in the writing process. Next, it presents the different views on the effectiveness of
    feedback in ESL writing due to the type of feedback and the way it is given. Lastly, it concludes that
    feedback acts as a scaffold by providing a meaningful and impactful learning to students.
    Matched MeSH terms: Feedback
  8. Lo SK, Liew CS, Tey KS, Mekhilef S
    Sensors (Basel), 2019 Oct 09;19(20).
    PMID: 31600904 DOI: 10.3390/s19204354
    The advancement of the Internet of Things (IoT) as a solution in diverse application domains has nurtured the expansion in the number of devices and data volume. Multiple platforms and protocols have been introduced and resulted in high device ubiquity and heterogeneity. However, currently available IoT architectures face challenges to accommodate the diversity in IoT devices or services operating under different operating systems and protocols. In this paper, we propose a new IoT architecture that utilizes the component-based design approach to create and define the loosely-coupled, standalone but interoperable service components for IoT systems. Furthermore, a data-driven feedback function is included as a key feature of the proposed architecture to enable a greater degree of system automation and to reduce the dependency on mankind for data analysis and decision-making. The proposed architecture aims to tackle device interoperability, system reusability and the lack of data-driven functionality issues. Using a real-world use case on a proof-of-concept prototype, we examined the viability and usability of the proposed architecture.
    Matched MeSH terms: Feedback
  9. Az’lina Abdul Hadi, Noorezatty Mohd Yusop, Nornadiah Mohd Razali, Zuraida Khairudin, Noraziah Mohd Razali
    MyJurnal
    Statistics plays a vital role in various spheres of life. Choosing the right statistical analysis is one of the most crucial aspects in statistics. Some researchers especially those who have minimal statistical background, are often having difficulties in choosing the right statistical analysis for their study. Inappropriate analysis may produce misleading results at the end of the study. Hence, mySTATS Tracker was created as an alternative tool to assist the researcher in determining the right statistical analysis. The aim of this study was to gauge the effectiveness of using mySTATS Tracker in identifying the most appropriate statistical analysis based on the supplied input. In addition, this study intended to determine whether there was significant difference in score based on gender and faculties. The difference in the perception towards the usefulness and effectiveness of this application based on faculties was also investigated. A sample of 55 undergraduate students with various background have participated in this study. The sample of students were asked to answer a set of questions with (posttest) and without (pre-test) using mySTATS Tracker. Then, the score obtained was recorded and analysed. Gap analysis and Independent t-test were applied in achieving the objectives of the study. The results showed that there was a significant difference in scores between pre-test and post-test, p < 0.05. It could be concluded that the users scored significantly higher and answered the questions in a significantly shorter time using mySTATS Tracker compared to without using it. The study also found that there was a significant difference in score based on gender and faculties, p < 0.05. Furthermore, there was a significant difference in the perception of the usefulness and effectiveness of this application based on respective faculties. In overall, mySTATS Tracker has received a positive feedback from the potential users. This study has proven that mySTATS Tracker is a good alternative solution in suggesting the right statistical analysis to the users
    Matched MeSH terms: Feedback
  10. El-Sabban F
    JUMMEC, 2001;6:24-29.
    Improving upon the quality of teaching by teaching staff at all educational institutions is oil very significant objective. Eva luation of teaching performed by individuals at such institutions would be instrumental in assessing the quality of such teaching and a tool towards its improvement. In this article, one scheme for teaching evaluation by students and another by peers are proposed and discussed. Assessment by students may provide contrasting results to those obtained from peers. For a "just and fair'" overalJ assessment of one's teaching., it is recommended that students' evaluation would be combined with those of peers. Results of such an evaluation of teaching should be perceived as being valuable in providing feedback to the teacher and can be utilized for many purposes by academicians and administrators. KEYlVORDS: Academia, classroom teaching., evaluation by peers, evaluation by students, proposed schemes.
    Matched MeSH terms: Feedback
  11. Spooner M, Larkin J, Liew SC, Jaafar MH, McConkey S, Pawlikowska T
    BMC Med Educ, 2023 Nov 22;23(1):895.
    PMID: 37993832 DOI: 10.1186/s12909-023-04842-9
    INTRODUCTION: While feedback aims to support learning, students frequently struggle to use it. In studying feedback responses there is a gap in explaining them in relation to learning theory. This study explores how feedback experiences influence medical students' self-regulation of learning.

    METHODS: Final-year medical students across three campuses (Ireland, Bahrain and Malaysia) were invited to share experiences of feedback in individual semi-structured interviews. The data were thematically analysed and explored through the lens of self-regulatory learning theory (SRL).

    RESULTS: Feedback interacts with learners' knowledge and beliefs about themselves and about learning. They use feedback to change both their cognitive and behavioural learning strategies, but how they choose which feedback to implement is complex. They struggle to generate learning strategies and expect teachers to make sense of the "how" in addition to the "what"" in planning future learning. Even when not actioned, learners spend time with feedback and it influences future learning.

    CONCLUSION: By exploring our findings through the lens of self-regulation learning, we advance conceptual understanding of feedback responses. Learners' ability to generate "next steps" may be overestimated. When feedback causes negative emotions, energy is diverted from learning to processing distress. Perceived non-implementation of feedback should not be confused with ignoring it; feedback that is not actioned often impacts learning.

    Matched MeSH terms: Feedback
  12. Mohd Noor MN, Cockburn JG, Foong CC, Thiam CN, Abdul Aziz YF, Hong WH, et al.
    PLoS One, 2024;19(11):e0313332.
    PMID: 39509428 DOI: 10.1371/journal.pone.0313332
    Current feedback models advocate learner autonomy in seeking, processing, and responding to feedback so that medical students can become feedback-literate. Feedback literacy improves learners' motivation, engagement, and satisfaction, which in turn enhance their competencies. However, there is a lack of an objective method of measuring medical student feedback literacy in the empirical literature. Such an instrument is required to determine the level of feedback literacy amongst medical students and whether they would benefit from an intervention. Therefore, this research protocol addresses the methodology aimed at the development of a comprehensive instrument for medical student feedback literacy, which is divided into three phases, beginning with a systematic review. Available instruments in health profession education will be examined to create an interview protocol to define medical students' feedback literacy from the perspectives of medical students, educators, and patients. A thematic analysis will form the basis for item generation, which will subsequently undergo expert validation and cognitive interviews to establish content validity. Next, we will conduct a national survey to gather evidence of construct validity, internal consistency, hypothesis testing, and test-retest reliability. In the final phase, we will distribute the instrument to other countries in an international survey to assess its cross-cultural validity. This protocol will help develop an instrument that can assist educators in assessing student feedback literacy and evaluating their behavior in terms of managing feedback. Ultimately, educators can identify strengths, and improve communication with students, as well as feedback literacy and the feedback process. In conclusion, this study protocol outlined a systematic, evidence-based methodology to develop a medical student feedback literacy instrument. This study protocol will not only apply to medical and local cultural contexts, but it has the potential for application in other educational disciplines and cross-cultural studies.
    Matched MeSH terms: Feedback
  13. Nagi F, Ahmed SK, Zularnain AT, Nagi J
    ISA Trans, 2011 Jul;50(3):364-75.
    PMID: 21353218 DOI: 10.1016/j.isatra.2011.01.014
    The motivation behind this paper is to seek alternative techniques to achieve a near optimal controller for non-linear systems without solving the analytical problem. In classical optimal control systems, the system states and optimization co-state parameters generate a two-point boundary value problem (TPBVP) using Pontryagin's minimum principle (PMP). The paper contributes a new fuzzy time-optimal controller to the existing fuzzy controllers which has two regular inputs and one bang-bang output. The proposed controller closely approximates the output of the classical time-optimal controller. Further, input membership function are tuned on-line to improve the time-optimal output. The new controller exhibits optimal behaviour for second order non-linear systems. The rules are selected to satisfy the stability and optimality conditions of the new fuzzy time-optimal controller. The paper describes a systematic procedure to design the controller and how to achieve the desired result. To benchmark the new controller performance, a sliding mode controller is used for guidance and comparison purpose. Simulation of three non-linear examples shows promising results. The work described here is expected to incite researcher's interest in fuzzy time-optimal controller design.
    Matched MeSH terms: Feedback*
  14. Leong KC, Teng CL, Ng CJ
    Med J Malaysia, 2007 Aug;62(3):265-7.
    PMID: 18246926
    In a survey of clinical students in two Malaysian medical schools, it was found that students used a wide variety of learning resources, but textbooks were still the primary source of their information. Students had positive views about clinical teaching and lectures but somewhat lower opinions on problem-based learning. They generally did not perceive lecturers as facilitators, role models and counselors. In spite of the stated curricular goals of promoting self-directed learning via problem-based learning, students in these medical schools were driven by the nature of examinations and focused mainly on clinical contents rather than the process of learning.
    Matched MeSH terms: Feedback*
  15. Perera AT, Tan JT, Mu PS, Newport R
    Atten Percept Psychophys, 2021 Jul;83(5):2281-2290.
    PMID: 33754299 DOI: 10.3758/s13414-021-02262-9
    Perception of the size of body parts, for instance the hand, has been shown to be distorted in healthy participants, with over- and underestimations of width and length, respectively. Illusory manipulations of body shape and size have highlighted the flexibility of the body representation and have also been found to update immediate perceptions of body size and surrounding objects. Here, we examined whether underlying misperceptions of hand width and length can be modified through exposure to illusory changes in hand size using a mirror visual feedback (MVF) paradigm. While questionnaire responses indicated subjective susceptibility to both magnified and minified manipulations, objective hand size estimates only showed significant differences following exposure to minifying mirrors. These variations might reflect differences in the way that stored representations are accessed or updated in response to size manipulations. Secondly, the findings further reinforce differences between subjective and objective outcomes of illusions on subsequent body perception.
    Matched MeSH terms: Feedback, Sensory*
  16. Yap, H.J., Tan, C.H., Sivadas, C.S., Wan, W.L., Taha, Z., Chang, S.W.
    Movement Health & Exercise, 2018;7(2):39-52.
    MyJurnal
    Virtual Reality (VR) is a technology that makes use of computer graphics,
    algorithms and special hardware to simulate the real world in real time. There
    are four main elements required to make a VR system a success, namely
    virtual world, immersion, sensory feedback and interactivity. The virtual
    world created must be as real as possible. Users should have a sense of
    immersion in the virtual world. Position tracking is usually incorporated into
    a VR system for visual, sound and force feedback on the users and the virtual
    objects in the VR world must be interact-able with the users. VR has proven
    to be effective in training and widely used in many areas, for example medical
    surgery, dental treatment, psychology treatment for phobia, engineering
    design, maintenance and repair, sports and many more. By implementing VR
    technology in training, users are able to reduce the training cost and time. VR
    training is also safer for users, as harsh environments can be simulated despite
    the environment and/or human factors. On the other hand, the physical
    facilities and infrastructures of the track cycling are very costly. In track
    cycling, the game field, known as a velodrome, requires a large space of area.
    It requires a huge budget and professional manpower to maintain these
    facilities. Therefore, the proposed spatial immersive track cycling simulator
    is invented to overcome these issues. The aim of this study is to simulate the
    velodrome track cycling in VR environment and synchronize with a 6 degreeof-freedom
    motion platform. The simulator is aimed to be low cost and
    minimal space requirement compared to actual velodrome. A trainee who
    undergoes VR track cycling simulator training wears a head-mounted-display (HMD) to visualize the VR environment. An actual bike will be mounted on
    the 6-DOF motion platform, which the platform will synchronize with the VR
    environment to simulate the track condition for the training purposes. An
    encoder is placed at the bicycle wheel to feedback the moving speed and
    synchronize the visualize feedback to the HMD.
    Matched MeSH terms: Feedback; Feedback, Sensory
  17. Mushtaq F, Guillen PP, Wilkie RM, Mon-Williams MA, Schaefer A
    Data Brief, 2016 Mar;6:378-85.
    PMID: 26862585 DOI: 10.1016/j.dib.2015.11.060
    Event-related potentials (ERPs) time-locked to decision outcomes are reported. Participants engaged in a gambling task (see [1] for details) in which they decided between a risky and a safe option (presented as different coloured shapes) on each trial (416 in total). Each decision was associated with (fully randomised) feedback about the reward outcome (Win/Loss) and its magnitude (varying as a function of decision response; 5-9 points for Risky decisions and 1-4 points for Safe decisions). Here, we show data demonstrating: (a) the influence of Win feedback in the preceding outcome (Outcome t-1) on activity related to the current outcome (Outcome t ); (b) difference wave analysis for outcome expectancy- separating Expected Outcomes (consecutive Loss trials subtracted from consecutive reward) from Unexpected Outcomes (subtracting Loss t-1Win t trials from Win t-1Loss t trials); (c) difference waves separating Switch and Stay responses for Outcome Expectancy; (d) the effect of magnitude induced by decisions (Risk t vs. Safe t ) on Outcome Expectancy; and finally, (e) expectations reflected by response switch direction (Risk to Safe responses vs. Safe to Risk t ) on the FRN at Outcome t .
    Matched MeSH terms: Feedback
  18. Khan N, Idrees A
    J Biomed Opt, 2001 Jan;6(1):86-9.
    PMID: 11178584
    The goal of this study is to assess the risk of overexposure, when DFB dye laser is used for medical treatment in pulsed mode operation. Results of experimental study showing an unexpected rise of energy in pulses of distributed feedback dye laser (DFDL) output due to temperature phase gratings in dye cell during passively Q switched and mode-locked operation is reported. This unintended increase in the number of pulses, pulse duration, per pulse energy may cause side effects, when used for selective photothermolysis. To probe this phenomenon the most commonly used Rh6G dye was excited with 10-20 pulses of second harmonic of a passively Q switched and mode-locked Nd:yttrium-aluminum-garnet(YAG) laser. The outputs of DFDL and Nd:YAG laser were recorded by an Imacon-675 streak camera. The peak of DFDL output pulses was found delayed proportionally from the peak of the Nd:YAG pulses by more than an interpulse period of excitation laser. A computer program was used to simulate the experimentally measured results to estimate the thermal decay constants and energy retained by medium. The delay between peaks of Nd:YAG (input) and DFDL (output) pulses was found to vary from 10 to 14 ns for various cavity lengths. It was interesting to note that for smaller inter-pulse periods the effect of gradual gain buildup satisfied the threshold conditions for some of the pulses that otherwise cannot lase. This may lead to unintended increase in energy fluence causing overexposure-induced bio effects.
    Matched MeSH terms: Feedback
  19. Khan N
    Appl Opt, 2004 Jan 20;43(3):678-81.
    PMID: 14765930
    The theoretical basis for simultaneous oscillation of 2N - 3 laser lines is due to interference of N (for all even N > or = 2) pump beams in a distributed-feedback dye laser is described. Multiple gratings are produced in a dye solution by interference patterns of N/2 pairs of a frequency-doubled Nd:YAG laser. N/2 pairs of mutually time-delayed pulses induce multiple gratings of different periodicities, of which 2N - 3 gratings support oscillation of 2N - 3 lines and the remaining gratings, because of their larger periods, cannot support Bragg scattering. The maximum number of laser lines depends on the mutual delay between adjacent pairs of beams, coherence, states of polarization, pulse lengths, and of course the number of pulses. For three pairs of excitation beams derived from the same source through wave-front or amplitude phase division techniques, the output lasing lines varied from a minimum of three to a maximum of nine. This research was carried out by pumping of a dye solution with two, four, and six pulses, but the principle may be extended to multiple output lines, depending on the number of pump pulses and on the gain of the dye solution.
    Matched MeSH terms: Feedback
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