OALib Journal期刊

ISSN: 2333-9721




2018 ( 10 )

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2016 ( 22 )

2015 ( 329 )


匹配条件: “Kar-Mon CHAN” ,找到相关结果约6231条。
Stella Suk-ching CHONG,Kar-Mon CHAN
Journal of Special Education and Rehabilitation , 2012,
Abstract: The term ‘hikikomori’ originates from Japan and means ‘acute social withdrawal’. This study intends to investigate into the causes of hikikomori which is increasing worldwide phenomenon. The methodology is a case study approach located in an interpretive paradigm. The data was mainly collected through e-mails with the participant and phone conversations with his mother. The participant was a ‘hiki-ko-morian’ who was invited to investigate his own problem and further to be the co-author of this paper. The literature findings and this case study were then conceptualized into a more wide-ranging framework in compre-hen-ding the process of hikikomorization. The result appears to show that hikikomorization involves three processes: first, a predisposed introverted personality; second, the effects of multiple environmental factors such as family, school and society; and finally, the trigger point, such as the end of schooling or a stressful event. The study offers implications for other hiki-ko-mo-rians in better understanding of their problems and for practitioners working with reclusive ado-lescents and their families.
Wellness Centre: An Evidence-Guided Approach to Delivering Culturally Relevant Community Psychogeriatric Services for Chinese Elders
Kar C. Chan,Joel Sadavoy
ISRN Psychiatry , 2012, DOI: 10.5402/2012/815707
Wellness Centre: An Evidence-Guided Approach to Delivering Culturally Relevant Community Psychogeriatric Services for Chinese Elders
Kar C. Chan,Joel Sadavoy
ISRN Psychiatry , 2012, DOI: 10.5402/2012/815707
Abstract: Ethnic elders are commonly reluctant to access mental health services and their mental health problems are often overlooked and detected late in the course of illness. Prior studies identified major barriers to ethnic seniors accessing appropriate mental health care demonstrating that language and cultural beliefs cannot be ignored if effective mental health services are to be provided to patients from diverse cultural groups. These are particularly important when care is needed by less acculturated immigrant ethnic seniors for whom language barriers are often greatest. Differences in conceptions of mental distress affect ethnic seniors' choice of help-seeking and often discourage or divert aged persons from utilizing mainstream conventional psychiatric care. Despite the extensive need for appropriate service models for ethnic populations, there have been limited data and models to illustrate how these programs can be systematically and effectively integrated within the mainstream mental health service framework. This paper describes an innovative, mainstream, community-based psychogeriatric service delivery model developed for Chinese seniors in Toronto, Canada, aiming at improving their access to care and enhancing earlier mental health problem detection. The important concepts and strategies of designing and operating a culturally acceptable program are illustrated supported by program data and the challenges analyzed. 1. Introduction Canada’s visible-minority population including its geriatric age group is growing at a much faster rate than the general population. Between 2001 and 2006 it grew by 27% [1]. It is estimated that by 2017, one in five Canadians will be a visible minority, and half of them will be Chinese and South Asian [2]. This ethnic diversity is particularly notable in large urban centers such as Toronto and Vancouver. North American studies have consistently revealed a high prevalence of mental disorders among Chinese elders compared to their general population counterparts but their mental health problems are often underdiagnosed and undertreated [3–5]. Barriers to care are largely explained by eight key factors: stigma [6]; poor knowledge of resources [7]; reliance on family’s support for care-seeking and tendency of families to contain problems until they turn into crisis [7]; lack of linguistic and culturally appropriate service [2, 7, 8]; worries over medication side effects and the dominance of drug therapy [8]; underdetection at the primary care level [9, 10]; geographical inaccessibility of services [7, 11]; challenges in
Central Neurocytoma and Epidermoid Tumor Occurring as Collision Tumors: A Rare Association  [PDF]
Peter Y. M. Woo, Ho Hung Cheung, Calvin H. K. Mak, Siu Ki Chan, Kar Ming Leung, Kwong Yau Chan
Open Journal of Modern Neurosurgery (OJMN) , 2014, DOI: 10.4236/ojmn.2014.41007
Abstract: Different brain tumors of distinct histology can co-exist in the setting of phakomatoses or as a complication of radiotherapy. In the absence of these predisposing factors, this phenomenon is uncommon. When the lesions are in close proximity they are described as collision tumors and are extremely rare. A 58-year-old woman presented with persistent headache and cognitive decline for three months. Magnetic resonance imaging revealed a tumor arising from the atrium of the left lateral ventricle with heterogeneous contrast enhancement. This intraventricular lesion was adjacent to another extensive infiltrating tumor of the basal cisterns. Operative findings revealed a vascular ventricular tumor and gross total resection was achieved. An adjacent avascular basal cistern tumor with a pearly white sheen was encountered and partial excision was performed. The histopathological diagnosis was central neurocytoma and epidermoid tumor. There is only one documented description of a central neurocytoma co-existing with a tumor of different pathology. To our knowledge, this is the first reported collision tumor case involving central neurocytoma. Since the incidence of both lesions co-existing juxtaposed is extremely low, a chronic oncogenetic inflammatory process stimulated by the epidermoid tumor to the subventricular region is suggested. Other mechanisms for tumor collision are discussed and we suggest a classification system for this rare association to reflect their pathogenesis.
Global Sampling for Sequential Filtering over Discrete State Space
Cheung-Mon-Chan Pascal,Moulines Eric
EURASIP Journal on Advances in Signal Processing , 2004,
Abstract: In many situations, there is a need to approximate a sequence of probability measures over a growing product of finite spaces. Whereas it is in general possible to determine analytic expressions for these probability measures, the number of computations needed to evaluate these quantities grows exponentially thus precluding real-time implementation. Sequential Monte Carlo techniques (SMC), which consist in approximating the flow of probability measures by the empirical distribution of a finite set of particles, are attractive techniques for addressing this type of problems. In this paper, we present a simple implementation of the sequential importance sampling/resampling (SISR) technique for approximating these distributions; this method relies on the fact that, the space being finite, it is possible to consider every offspring of the trajectory of particles. The procedure is straightforward to implement, and well-suited for practical implementation. A limited Monte Carlo experiment is carried out to support our findings.
Jensen-Shannon Divergence and Non-linear Quantum Dynamics
Saeid Molladavoudi,Hishamuddin Zainuddin,Chan Kar Tim
Physics , 2012, DOI: 10.1016/j.physleta.2012.05.007
Abstract: Using the statistical inference method, a non-relativistic, spinless, non-linear quantum dynamical equation is derived with the Fisher information metric substituted by the Jensen-Shannon distance information. Among all possible implications, it is shown that the non-linear Schr\"odinger equation preserves the symplectic structure of the complex Hilbert space, hence a Hamiltonian dynamics. The canonically projected dynamics is obtained on the corresponding projective Hilbert space of pure state density operators.
Edible Bird’s Nest, an Asian Health Food Supplement, Possesses Skin Lightening Activities: Identification of N-Acetylneuraminic Acid as Active Ingredient  [PDF]
Gallant Kar Lun Chan, Zack Chun Fai Wong, Kelly Yin Ching Lam, Lily Kwan Wai Cheng, Laura Minglu Zhang, Huangquan Lin, Tina Tingxia Dong, Karl Wah Keung Tsim
Journal of Cosmetics, Dermatological Sciences and Applications (JCDSA) , 2015, DOI: 10.4236/jcdsa.2015.54032
Abstract: Edible bird’s nest (EBN; Yan Wo), or cubilose, is originated from the salivary secretion of Aerodramus fuciphagus. In Asia, EBN is famous for its unproven skin lightening function. Here, we aim to reveal the active ingredients of EBN responsible for skin lightening function. Three major fractions were isolated from EBN water extract by chromatography using LC-MS/MS, bioactivities of these isolated fractions were analyzed by assays of tyrosinase, melanocytes and 3D human skin model, from which, N-acetylneuraminic acid (NANA), the second isolated fraction showed an inhibition effect on tyrosinase activity in a dose-dependent manner. The IC50 of tyrosinase originated from mushroom and human was 16.93 mM and 0.10 mM respectively. Furthermore, only EBN with higher content of NANA (e.g. White and Red EBN), but not EBN with less NANA (e.g. Grass EBN), showed promising skin lightening function. This is the first report to reveal NANA being an active ingredient of EBN on skin lightening function.
Industrias Creativas de Dise?o de Indumentaria de Autor: Diagnóstico y desafíos a 10 a?os del surgimiento del fenómeno en Argentina
Cuadernos del Centro de Estudios en Dise?±o y Comunicaci?3n. Ensayos , 2012,
Abstract: a productive and cultural diagnosis of the creative industries of author fashion design in argentina, to 10 years of its emergence, will allow us to measure the real impact of this sector as well as to identify the main challenges to obtain economic and social sustainability in the long term.
Surgically Treated Symptomatic Prolapsed Lumbar and Sacral Intervertebral Discs in Females: A Comparative Study of Incidence and Causative Factors and Treatment
Nigerian Journal of Surgery , 2012,
Abstract: Background and Objective: There are various postulated possible causes of surgically symptomatic prolapsed intervertebral discs in the lumbar and sacral regions. They may be acting singularly or collectively. Yet, these factors, which could vary in different environments, have not been satisfactorily confirmed. The intention of this study is to share the experience of the author in the occurrence, possible causative factors, and treatment of surgically symptomatic prolapsed lumbar and sacral intervertebral discs in females, and to compare this experience in Switzerland, Nigeria, and Jamaica using surgery records for a period of over 39 years. Materials and Methods: Records of these cases were examined and analyzed with the intent of comparing the frequency of occurrence and possible causative factors of this lesion in some countries. Results: There were 60 locations in 51 patients in Basel (Caucasian population only), 4 locations in 1 patient in Imo and Ebonyi States (African population only), and none in Jamaica (mixed population). The patients’ ages ranged from 19 to 71 years in Switzerland, and the only patient in Nigeria was 49 years old. Conclusion: The study revealed that surgically treated symptomatic prolapsed lumbar and sacral intervertebral discs in females occurred more in Basel, Switzerland, than in Imo and Ebonyi States of Nigeria and none occurred in Jamaica, West Indies. Racial differences, certain sporting/ recreational activities, smoking, and type of profession could have contributed to the development of this disease.
Case Series of Ruptured Jamaican Berry Aneurysms Four Decades Ago
Nigerian Journal of Surgery , 2011,
Abstract: Objective From our personal experiences, it is our wish to examine the incidence of ruptured intracranial aneurysms about four decades ago in Jamaica, the West Indies, with regards to postoperative deterioration of neurological/psychological functions. Materials and Method The author, while working in Jamaica, the West Indies, from 1975 to 1977 (3 years), operated on 6 cases of ruptured intracranial aneurysms of 5 females and 1 male. The source of these data is from the author's surgery records. Result There were 4 aneurysms from the posterior communicating artery, and 1 each from the anterior communicating artery, and the middle cerebral artery. Their ages ranged from 31 to 64 years. They presented with diverse neurological disturbances. Their aneurysms, which were diagnosed through contrast carotid angiography, were all clipped through fronto-lateral craniotomy under general anaesthesia. The procedures were well tolerated by the patients. There were no complications and no gross additional neurological deficits postoperatively. The wounds had healed by primary intention. The patients were discharged home 12 days postoperatively, the stitches having been removed 2 days earlier. Follow-up checks started about 7 days after discharge. The neurological deficits had cleared about 3 months later. Conclusion Having bled, the aneurysms exposed themselves by causing sudden severe headaches, and various neurological problems, depending on their locations. We found more females than males. The posterior communicating artery aneurysm was predominant. There were no cerebro-vascular spasms postoperatively. Greek -- -- ANEURYSMA (Ana= up or across, eurys = wide or broad) Key Words: Subarachnoid Haemorrhage, Cerebro-Vascular Spasms

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