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Prolonged Coma in Cervical Myelopathy with Dysautonomia
Ahmad MT,Leong CK,Surrun SK
Indian Journal of Physical Medicine and Rehabilitation , 2010,
Abstract: The term dysautonomia is used when there is aderangement in the reflex mechanisms of the limbicsystem resulting in improper control of pulse and bloodpressure and even syncope sometimes. Cervicalmyelopathy may be complicated by dysautonomia andmay rarely cause syncope; however, prolonged coma asa result of autonomic dysfunction in traumatic cervicalmyelopathy has not been described in the literature. Wedescribe two patients with cervical myelopathy withdysautonomia who had prolonged coma, one of whomhad to intubated multiple times and kept on ventilatorysupport.
Recursive Asymptotic Hybrid Matrix Method for Acoustic Waves in Multilayered Piezoelectric Media  [PDF]
Eng Leong Tan
Open Journal of Acoustics (OJA) , 2011, DOI: 10.4236/oja.2011.12004
Abstract: This paper presents the recursive asymptotic hybrid matrix method for acoustic waves in multilayered piezoelectric media. The hybrid matrix method preserves the numerical stability and accuracy across large and small thicknesses. For discussion and comparison, the scattering matrix method is also presented in physics-based form and coherent form. The latter form resembles closely that of hybrid matrix method and helps to highlight their relationship and distinction. For both scattering and hybrid matrix methods, their formulations in terms of eigenwaves solution are provided concisely. Making use of the hybrid matrix, the recursive asymptotic method without eigenwaves solution is described and discussed. The method bypasses the intricacies of eigenvalue-eigenvector approach and requires only elementary matrix operations along with thin- layer asymptotic approximation. It can be used to determine Green’s function matrix readily and facilitates the trade-off between computation efficiency and accuracy.
Fine-Grained Detection of Programming Students’ Frustration Using Keystrokes, Mouse Clicks and Interaction Logs  [PDF]
Fwa Hua Leong
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.49002
Prolonged frustration leads to loss of confidence and eventual disinterest in the learn-ing itself. The modelling of frustration in learning is thus important as it informs on the appropriate time to intervene to sustain the interest and motivation of students. To automatically detect learner’s frustration in a naturalistic learning environment, the novel use of keystrokes, mouse clicks and interaction patterns of students captured within the context of a tutoring system was proposed. The modelling approach was described and a comparison was made between the proposed model using Bayesian Network and the baseline Na?ve Bayes model. With the formulation of an overlapped sliding window mechanism, the granularity of detection was also investigated. The re-sults confirm the hypothesis that a combination of keystrokes, mouse clicks and inter-action logs can be used to accurately distinguish affective states of frustration and non-frustration amongst novice learners of computer programming in a granular fashion.
Digital photography in anatomical pathology
Leong F,Leong A
Journal of Postgraduate Medicine , 2004,
Abstract: Digital imaging has made major inroads into the routine practice of anatomical pathology and replaces photographic prints and Kodachromes for reporting and conference purposes. More advanced systems coupled to computers allow greater versatility and speed of turnaround as well as lower costs of incorporating macroscopic and microscopic pictures into pathology reports and publications. Digital images allow transmission to remote sites via the Internet for consultation, quality assurance and educational purposes, and can be stored on and disseminated by CD-ROM. Total slide digitisation is now a reality and will replace glass slides to a large extent. Three-dimensional images of gross specimens can be assembled and posted on websites for interactive educational programmes. There are also applications in research, allowing more objective and automated quantitation of a variety of morphological and immunohistological parameters. Early reports indicate that medical vision systems are a reality and can provide for automated computer-generated histopathological diagnosis and quality assurance.
The upgrade of GEO600
Harald Lück,Christopf Affeldt,Jerome Degallaix,Andreas Freise,Hartmut Grote,Martin Hewitson,Stefan Hild,Jonathan Leong,Mirko Prijatelj,Kenneth A. Strain,Benno Willke,Holger Wittel,Karsten Danzmann
Physics , 2010, DOI: 10.1088/1742-6596/228/1/012012
Abstract: The German / British gravitational wave detector GEO 600 is in the process of being upgraded. The upgrading process of GEO 600, called GEO-HF, will concentrate on the improvement of the sensitivity for high frequency signals and the demonstration of advanced technologies. In the years 2009 to 2011 the detector will undergo a series of upgrade steps, which are described in this paper.
The impact of Positive Reinforcement on Employees’ Performance in Organizations  [PDF]
Leong Teen Wei, Rashad Yazdanifard
American Journal of Industrial and Business Management (AJIBM) , 2014, DOI: 10.4236/ajibm.2014.41002

Each employee’s performance is important in an organization. A way to motivate it is through the application of reinforcement theory which is developed by B. F. Skinner. One of the most commonly used methods is positive reinforcement in which ones behavior is strengthened or increased based on consequences. This paper aims to review the impact of positive reinforcement on the performances of employees in organizations. It can be applied by utilizing extrinsic reward or intrinsic reward. Extrinsic rewards include salary, bonus and fringe benefit while intrinsic rewards are praise, encouragement and empowerment. By applying positive reinforcement in these factors, desired positive behaviors are encouraged and negative behaviors are eliminated. Financial and non-financial incentives have a positive relationship with the efficiency and effectiveness of staffs.

Ultrasound of living donor liver transplantation
L Leong
Biomedical Imaging and Intervention Journal , 2006, DOI: 10.2349/biij.2.2.e17
Are comprehensive orthopaedic societies needed or relevant in the face of increasing sub-specialisation in orthopaedics and traumatology?
Leong JC
Journal of Orthopaedic Surgery , 2002,
Spin-Torsion, Braneworlds and Changing Symmetry in the Universe
Bernard Leong
Physics , 2003,
Abstract: In this thesis, we explore three phenomenological alternatives to the current paradigm of the standard inflationary big bang scenario. The three alternative themes are spin torsion (or Einstein-Cartan-Kibble-Sciama) theories, extra dimensions (braneworld cosmology) and changing global symmetry. In the spin torsion theories, we found new cosmological solutions with a cosmological constant as alternative to the standard scalar field driven inflationary scenario and we conclude that these toy models do not exhibit an inflationary phase. In the theme of extra dimensions, we discuss the dynamics of linearized scalar and tensor perturbations in an almost Friedmann-Robertson-Walker braneworld cosmology of Randall-Sundrum type II using the 1+3 covariant approach. We derive a complete set of frame-independent equations for the total matter variables, and a partial set of equations for the non-local variables, which arise from the projection of the Weyl tensor in the bulk. The latter equations are incomplete since there is no propagation equation for the non-local anisotropic stress. In the simplest approximation, we show the braneworld imprint as a correction to the power spectra for standard temperature and polarization anisotropies and similarly show that the tensor anisotropies are also insensitive to the high energy effects. Finally in the theme of changing global symmetry, we constructed a bounded isothermal solution embedded in an expanding Einstein de Sitter universe and showed that there is a possible phase transition in the far future.
Thermal Correction of Astigmatism in the Gravitational Wave Observatory GEO 600
Holger Wittel,Harald Lück,Christoph Affeldt,Katherine L Dooley,Hartmut Grote,Jonathan R Leong,Mirko Prijatelj,Emil Schreiber,Jacob Slutsky,Kenneth A. Strain,Michal Was,Benno Willke,Karsten Danzmann
Physics , 2013, DOI: 10.1088/0264-9381/31/6/065008
Abstract: The output port of GEO 600 is dominated by unwanted high order modes (HOMs). The current thermal actuation system, a ring heater behind one of the folding mirrors, causes a significant amount of astigmatism, which produces HOMs. We have built and installed an astigmatism correction system, based on heating this folding mirror at the sides (laterally). With these side heaters and the ring heater behind the mirror, it is possible to tune its radius of curvature in the horizontal and the vertical degree of freedom. We use this system to match the mirrors in the two arms of GEO 600 to each other, thereby reducing the contrast defect. The use of the side heaters reduces the power of the HOMs at the output of GEO 600 by approximately 37%.
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