Traffic by multiple species of molecular motors

We study the traffic of two types of molecular motors using the two-species symmetric simple exclusion process (ASEP) with periodic boundary conditions and with attachment and detachment of particles. We determine characteristic properties such as motor densities and currents by simulations and analytical calculations. For motors with different unbinding probabilities, mean field theory gives the correct bound density and total current of the motors, as shown by numerical simulations. For motors differing in their stepping probabilities, the particle-hole symmetry of the current-density relationship is broken and mean field theory fails drastically. The total motor current exhibits exponential finite-size scaling, which we use to extrapolate the total current to the thermodynamic limit. Finally, we also study the motion of a single motor in the background of many non-moving motors.Comment: 23 pages, 6 figures, late

Transport by molecular motors in the presence of static defects

The transport by molecular motors along cytoskeletal filaments is studied theoretically in the presence of static defects. The movements of single motors are described as biased random walks along the filament as well as binding to and unbinding from the filament. Three basic types of defects are distinguished, which differ from normal filament sites only in one of the motors' transition probabilities. Both stepping defects with a reduced probability for forward steps and unbinding defects with an increased probability for motor unbinding strongly reduce the velocities and the run lengths of the motors with increasing defect density. For transport by single motors, binding defects with a reduced probability for motor binding have a relatively small effect on the transport properties. For cargo transport by motors teams, binding defects also change the effective unbinding rate of the cargo particles and are expected to have a stronger effect.Comment: 20 pages, latex, 7 figures, 1 tabl

A handbook for using elder academy as a platform of other learning experiences

This handbook will discuss how school syllabus, Other Learning Experiences (OLE) and Elder Academy (EA) can be integrated. It will provide some structures for schools as a reference and help develop a comprehensive learning plan. Besides, the handbook will mention different roles and responsibilities of stakeholders, as well as the suggestions and guidelines for assessment. The programs and activities in the “Elder Academy at Lingnan” will be taken as examples to demonstrate the guidelines. This can provide a better understanding of the operation mode of the integration between school curricula, OLE and EA. Hence, interested stakeholders can perform their own plans more systematically and effectively.https://commons.ln.edu.hk/osl_book/1000/thumbnail.jp

Room Temperature Organic Superconductor?

The electron--phonon coupling in fullerene C28 has been calculated from first principles. The value of the associated coupling constant lambda/N(0) is found to be a factor three larger than that associated with C60. Assuming similar values of the density of levels at the Fermi surface N(0) and of the Coulomb pseudopotential for C28-based solids as those associated with alkali-doped fullerides A3C60, one obtains Tc(C28) \approx 8 Tc(C60).Comment: 10 pages, 2 figure

Gastro-intestinal stromal tumours in Hong Kong

published_or_final_versio

Re: Practice of breastfeeding and factors that affect breastfeeding in Hong Kong [2]

published_or_final_versio

Gray-level co-occurrence matrix bone fracture detection

Problem statement: Currently doctors in orthopedic wards inspect the bone x-ray images according to their experience and knowledge in bone fracture analysis. Manual examination of x-rays has multitude drawbacks. The process is time-consuming and subjective. Approach: Since detection of fractures is an important orthopedics and radiologic problem and therefore a Computer Aided Detection(CAD) system should be developed to improve the scenario. In this study, a fracture detection CAD based on GLCM recognition could improve the current manual inspection of x-ray images system. The GLCM for fracture and non-fracture bone is computed and analysis is made. Features of Homogeneity, contrast, energy, correlation are calculated to classify the fractured bone. Results: 30 images of femur fractures have been tested, the result shows that the CAD system can differentiate the x-ray bone into fractured and nonfractured femur. The accuracy obtained from the system is 86.67. Conclusion: The CAD system is proved to be effective in classifying the digital radiograph of bone fracture. However the accuracy rate is not perfect, the performance of this system can be further improved using multiple features of GLCM and future works can be done on classifying the bone into different degree of fracture specifically

Service-Learning Times : semester 2 & summer term, 2017/18

Service-Learning (S-L) is an experiential learning approach that empowers students to apply academic knowledge in meaningful community service with reflection. In particular, the Service-Learning and Research Scheme (SLRS) seeks to build research elements into the S-L opportunities, which provide students with diverse and insightful service experiences to enhance their personal growth, intellectual advancement and career readiness while bringing substantial benefits to the collaborating partners. This booklet highlights popular S-L courses. Students wishing to experience the best of S-L should plan ahead and act quickly while places are available.https://commons.ln.edu.hk/sl_times/1001/thumbnail.jp

Interim estimates of the effectiveness of influenza vaccination against influenza-associated hospitalization in children in Hong Kong, 2015-16

From 1 September 2015 through 31 January 2016, we enrolled 2068 children 6 months to 17 years of age admitted to hospital with a febrile acute respiratory infection in our test-negative study. Information on receipt of 2015-16 northern hemisphere inactivated influenza vaccination was elicited from parents or legal guardians. Using conditional logistic regression adjusting for age and matching on calendar time, we estimated influenza vaccine effectiveness against hospitalization with influenza A or B to be 79.2% (95% confidence interval: 42.0%-92.4%). Annual influenza vaccination should be more widely used in children in Hong Kong. This article is protected by copyright. All rights reserved.published_or_final_versio

Social work practice in secondary setting: the case of medical social work in hospital setting in Hong Kong.

by Tam Tak-Wing, Victor.Thesis (M.S.W.)--Chinese University of Hong Kong, 1996.Includes bibliographical references (leaves [19-29]).ACKNOWLEDGMENT --- p.iABSTRACT --- p.iiLIST OF TABLES --- p.vLIST OF FIGURES --- p.viCHAPTERChapter I. --- Introduction --- p.1Purpose of the Study --- p.6Chapter II --- Medical Social Work in Hospital Setting --- p.8Chapter 1. --- Hospital --- p.8Chapter 2. --- Health Care Conception --- p.10Chapter i. --- The Bio-medical Model --- p.10Chapter ii. --- The Holistic Care Model --- p.15Chapter 3. --- Medical Professional --- p.18Chapter 4. --- Medical Social Worker --- p.19Chapter 5. --- Medical Social Worker in the Secondary Setting - Hospital --- p.22Chapter III. --- The Role of Medical Social Worker in Hospital --- p.29Chapter 1. --- The Concept of Role --- p.29Chapter 2. --- The Role and Function of Medical Social Worker --- p.32Chapter 3. --- Role Conflict --- p.38Chapter 4. --- Role Conflict of Medical Social Workers in the Hospital Setting --- p.41Chapter IV. --- Analytical Framework --- p.53Chapter V. --- Research Design and Methodology --- p.62Chapter 1. --- Areas of the Study --- p.62Chapter 2. --- Research Design --- p.62Chapter 3. --- A Brief Account of Medical Social Work in Hong Kong --- p.63Chapter 4. --- Yan Chai Hospital as a Case Study --- p.71Chapter 5. --- Population Groups --- p.72Chapter 6. --- The Limitations of Case Study Method --- p.73Chapter 7. --- Questionnaire Design --- p.73Chapter i. --- Health Care Conception --- p.75Chapter ii. --- The Perception of the Role of Medical Social Worker --- p.75Chapter iii. --- Pattern of Interaction and Impression --- p.76Chapter iv. --- Personal Data --- p.76Chapter 8. --- Data Collection --- p.77Chapter VI. --- Findings and Analysis --- p.79Chapter 1. --- Findings Obtained from Physicians --- p.79Chapter i. --- The Characteristics of the Respondents --- p.79Chapter ii. --- The Health Care Conception --- p.81Chapter iii. --- Role Perception of Medical Social Workers --- p.88Chapter iv. --- Patterns of Interaction --- p.95Chapter 2. --- Findings Obtained from Medical Social Workers --- p.100Chapter i. --- The Characteristics of the Medical Social Worker Group ..… --- p.100Chapter ii. --- The Health Care Conception --- p.101Chapter iii. --- Role Perception of Medical Social Workers --- p.108Chapter iv. --- Patterns of Interaction --- p.114Chapter VII. --- Discussion --- p.120Implication for Further Study --- p.125Chapter VIII. --- Conclusion --- p.127Implication for Medical Social Work Practice --- p.129APPENDICESChapter 1. --- Memo to the Hospital Chief Executive of Yan Chai HosptialChapter 2. --- Cover Memo to all respondentsChapter 3. --- Questionnaire for Medical ProfessionalChapter 4. --- Questionnaire for Medical Social WorkerBIBLIOGRAPH