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Search Results: 1 - 10 of 454 matches for " Howa Yeung "
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Responding to Domestic Violence in General Practice: A Qualitative Study on Perceptions and Experiences
Howa Yeung,Nubaha Chowdhury,Alice Malpass,Gene S. Feder
International Journal of Family Medicine , 2012, DOI: 10.1155/2012/960523
Abstract: The perceptions and experiences among general practitioners (GPs) and nurses in identifying female patients experiencing domestic violence and referring patients to specialist agencies need to be clarified. Eleven GPs and six nurses participating in a multidisciplinary domestic violence training and support programme in east London and Bristol were interviewed. All participants recognised that identification of women experiencing domestic violence and offering support were part of their clinical roles. Perceived differences between GPs and nurses, including time constraints, level of patient interaction, awareness of patients' social history, scope of clinical interview, and patient expectations were used to explain their levels of domestic violence inquiry. Barriers to inquiry included lack of time, experience, awareness of community resources, and availability of effective interventions postdisclosure. Longstanding relationships with patients were cited both as barrier and facilitator to domestic violence disclosure. Some nurses reported discomfort with direct inquiry due to the lack of clinical experience in responding to domestic violence despite satisfaction with training. Future domestic violence training programmes should take into account potential differences between GPs and nurses, in terms of their clinical roles and the unique barriers encountered, in order to improve self-efficacy and to facilitate collaborative and effective responses. 1. Introduction Domestic violence is a pattern of threatening behaviour, violence, or abuse including psychological, physical, sexual, financial, or emotional abuse between adults in the same family or who are or have been intimate partners [1]. It is a severe breach of human rights with profound consequences, particularly for women who, compared to men, experience more sexual violence, more severe physical violence, and more coercive control from their partners [2, 3]. Domestic violence threatens women’s physical health, mental health, and social functioning, and poses a serious public health problem [4, 5]. Its impact is widespread internationally, with lifetime prevalence ranging from 15% to 71% in a WHO multicountry study [6]. In the UK, 30% of women have experienced domestic abuse in their lifetime and 7% within the past year [7]. Its prevalence in women seeking healthcare is even higher; among women attending general practices in east London, 41% had experienced physical or sexual violence in their lifetime and 17% within the past year [8]. Primary care clinicians potentially have a key role in the
Physical activity reduces risk for colon polyps in a multiethnic colorectal cancer screening population
Nelson F Sanchez, Bryan Stierman, Said Saab, Divya Mahajan, Howa Yeung, Fritz Francois
BMC Research Notes , 2012, DOI: 10.1186/1756-0500-5-312
Abstract: We enrolled 982 patients: 558 Hispanic, 202 Asian,149 Black, and 69 White. Patients who reported exercising one or more hours weekly had a lower prevalence of any polyps (25.3% vs 33.2%, P?=?0.008) as well as adenomas (13.8 vs. 18.9%, P?=?0.03) compared to those who did not exercise. Black and Hispanic patients and those who were overweight or obese also had lower prevalence of polyps if they led an active lifestyle. Multivariate analysis revealed that age >55, male sex, and Black race/ethnicity were positively associated with the presence of adenomas, while a history of exercising one hour or more weekly was an independent negative predictor for the presence of adenomas anywhere in the colon (OR 0.67; 95% CI 0.4 - 0.9, P?=?0.03).Exercising one hour per week was associated with a lower prevalence of polyps and adenomas when compared to those who exercised less or not at all. An active lifestyle provides benefits to groups who are at risk for colorectal cancer, such as Blacks. It also provides significant protection to overweight and obese individuals. Public health initiatives should promote physical activity as a cancer prevention tool in multiethnic populations.noneAs the second leading cause of overall cancer death in the United States, colorectal cancer (CRC) remains an important preventable public health concern. In 2010 an estimated 142,570 new cases of CRC were diagnosed and there were 51,370 associated deaths [1]. There are notable racial/ethnic differences in the epidemiology of the disease. The National Cancer Institute’s 2007 Surveillance Epidemiology and End Results (SEER) Report determined a colorectal cancer incidence rate of 54.71/100,000 for Blacks versus 43.16 for Whites, 39.78 for Asians, and 35.84 for Hispanics [2]. Identifying modifiable factors that influence the epidemiology of colorectal cancer incidence among multiethnic groups might be informative for the development of public health strategies targeting the disease.Physical activity has bee
Endovascular Treatment of Intracranial Arteriovenous Malformations at Damascus University
Saeed Howa?ah Howa?ah,Morteza Joorabian,Mohammad Pipelzadeh
Iranian Journal of Radiology , 2011,
Abstract: Background/Objective: We report our experiences"nin the treatment of intracranial arteriovenous"nmalformations (AVMs) with Onyx embolization"nbefore neuro- or radiosurgery."nPatients and Methods: Between January 2008 and"nJuly 2010, 47 feeding arteries in 23 patients with brain"nAVMs were embolized with Onyx. There were eight"nwomen and 15 men with a mean age of 32 years (range,"n11-57 years). Clinical presentation included seizures"nin 11 patients (47%), hemorrhage from the AVM in"neight patients (35.7%), subarachnoid hemorrhage"nfrom a concomitant aneurysm in one patient (4.3%),"nand headache in three patients (13%)."nResults: The AVM volume reduction rates at the end of"nall embolization steps were included; volume reduction"nbelow 50% was 8.7%, 51-69% was 13%, 70-89% was"n34.8% and upper 90% was 43.5%. In 17.2% of the"npatients, radiosurgery was planned due to a persistent"narteriovenous shunt and neurosurgery was planned"nfor only one patient. The injection of Onyx resulted"nin high occlusion rates (volume reduction>90%) when"nthe AVM was in a supratentorial and cortical location,"nthe nidus was compact and plexiform and when there"nwas a small number of supplying (direct) feeders and"none superficial draining vein. Access device-related"ncomplications (stuck catheter, vessel perforation)"noccurred during the embolization of 47 feeding arteries"nin 8.6% of patients, with all such instances having had"nno clinical consequences."nConclusion: Onyx is feasible and safe in the"nembolization of brain AVMs. Complete obliteration"ncan be achieved in small AVMs. Large AVMs can be"nadequately reduced in size for additional surgical or"nradiosurgical treatment.
Comparative Analysis of Lactulose and Fructooligosaccharide on Growth Kinetics, Fermentation, and Antioxidant Activity of Common Probiotics  [PDF]
Evelyn Lu, Marie Yeung, Chi Kong Yeung
Food and Nutrition Sciences (FNS) , 2018, DOI: 10.4236/fns.2018.93013
Abstract: Prebiotics are non-digestible oligosaccharides that selectively stimulate the growth of beneficial bacteria in the human gut. Fructooligosaccharide (FOS) is a common prebiotic found in food products and infant formula. Lactulose is primarily used as a pharmaceutical ingredient but also shows potential prebiotic activities. Our objectives were to determine and compare the effects of FOS and lactulose on: 1) growth kinetics of common probiotics in aerobic condition; 2) pH and titratable acidity after fermentation; and 3) antioxidant capacity of the probiotics. Ten probiotic and two non-probiotic strains, representing genera Lactobacillus, Bifidobacterium, Bacillus, and Escherichia were assembled. Media used for prebiotics experiment were modified to contain 2% FOS or lactulose as the sole or main carbohydrate source. All experiments were done in triplicate. In aerobic condition, most strains cultured with FOS or lactulose did not grow optimally compared to dextrose (a non-prebiotic), while all four Bifidobacterium spp. showed little growth regardless of the carbohydrate source. In anaerobic condition, lactulose and FOS fermentation of Bifidobacterium spp. yielded similar pH (p = 0.2723), but percent lactic acid, as determined by titratable acidity, was higher after lactulose fermentation (p = 0.0004). The non-probiotic strains were able to utilize both FOS and lactulose, but displayed weaker acid production and higher pH (p < 0.0001) relative to the probiotic strains. Antioxidant activity of spent medium was measured with Trolox as the reference standard. Overall, the antioxidant activity of probiotics was strain-dependent. FOS enhanced the antioxidant activity of Bifidobacterium spp. (p = 0.0002) and Lactobacillus spp. (p = 0.0447), but not probiotic E. coli and Bacillus spp. (p = 0.2599) or non-probiotics (p = 0.8816). In conclusion, lactulose supported growth activities of probiotics to a similar extent as FOS. Lactulose also stimulated higher acid production for Bifidobacterium spp. than FOS in anaerobic condition, thus it might be considered for incorporation into functional food products containing bifidobacteria.
Bilinear Mappings and the Frame Operator  [PDF]
Enrico Au-Yeung
Advances in Pure Mathematics (APM) , 2013, DOI: 10.4236/apm.2013.34062

The theory of frames has been actively developed by many authors over the past two decades, both for its applications to signal processing, and for its deep connections to other areas of mathematics such as operator theory. Central to the study of frames is the frame operator. We initiate an investigation that extends the frame operator to the bilinear setting.

Optimal Consumption under Uncertainties: Random Horizon Stochastic Dynamic Roy’s Identity and Slutsky Equation  [PDF]
David W. K. Yeung
Applied Mathematics (AM) , 2014, DOI: 10.4236/am.2014.52028

This paper extends Slutsky’s classic work on consumer theory to a random horizon stochastic dynamic framework in which the consumer has an inter-temporal planning horizon with uncertainties in future incomes and life span. Utility maximization leading to a set of ordinary wealth-dependent demand functions is performed. A dual problem is set up to derive the wealth compensated demand functions. This represents the first time that wealth-dependent ordinary demand functions and wealth compensated demand functions are obtained under these uncertainties. The corresponding Roy’s identity relationships and a set of random horizon stochastic dynamic Slutsky equations are then derived. The extension incorporates realistic characteristics in consumer theory and advances the conventional microeconomic study on consumption to a more realistic optimal control framework.

International Journal of Engineering Science and Technology , 2011,
Abstract: The purpose of this study is to synthesize nano-grained Calcium Hydroxyapatite (HAp) through slip casting technique. For this, hydroxyapatite powders were synthesized using two methods, wet chemical method and Ammoniacal method. The as-prepared powders and calcined powders were characterized using XRD, FTIR, to study the phases of the powders. The hydroxyapatite powder calcined at 1000°C for 2hr was used to prepare 50 vol% slurry using DN40 (sodium olyacrylate) as dispersing agent. After slip casting, the green bodies were sintered at different temperatures, 1100, 1200, 1250 and 1300°C with 2hr soaking time. The sintered dense samples were characterized for physical and mechanical behavior.Dense HaP samples were obtained at 1250C.
Link Availability Prediction for Cognitive Radio Ad Hoc Networks  [PDF]
Ling Hou, Kai-Hau Yeung, Kin-Yeung Wong
Journal of Computer and Communications (JCC) , 2014, DOI: 10.4236/jcc.2014.26003

One critical issue for routing in cognitive radio ad hoc networks (CRAHNs) is how to select a reliable path for forwarding traffic. This is because mobility may cause radio links to break frequently. The reliability of a path depends on the availability of those links that constitutes the path. In this letter, we present a novel approach to predict the probability of the availability of the link between two cognitive radio nodes. The prediction is achieved by estimating the link activation and spectrum activation probabilities. Our prediction is verified by simulation and proved to be accurate. This study can provide reliability assurance on dynamic routing for cognitive radio ad hoc networks.

Chinese Medicine: a peer-reviewed open access journal for evidence-led Chinese medicine
Hin Yeung
Chinese Medicine , 2006, DOI: 10.1186/1749-8546-1-1
Abstract: CM publishes articles reporting valuable research with general interest in any aspect of Chinese medicine, such as basic research, clinical research, methodologies, theories and diagnoses, materia medica, acupuncture and other non-pharmacologic modalities of the Chinese medical system. CM welcomes submission of papers on application of Chinese medicine in disease prevention, treatment/management, and rehabilitation. In addition to biomedical research, CM also accepts reports on various aspects of Chinese medicine research, including public health, regulation, management, education, technical translation, cultural exchange and internationalization. Multidisciplinary and translational research reports are also strongly encouraged. All research and review articles must be peer-reviewed to ensure that the valuable knowledge drawn from them is evidence-based, scientifically justified and ethical. Peer-review is conducted by at least two internationally recognized experts in the respective fields. Our high calibre reviewers and editors will only accept papers of high quality.Since the 1990s, there has been a phenomenal growth of interest in traditional medicine knowledge and practices, which is evident in the increasing World Health Organization (WHO) activities and publications, such as Global Strategy for Traditional Medicine (2002–2005) [3]. Research activities in Chinese medicine, one of the most used and best documented traditional medicines, have been increasing tremendously worldwide as well. A large portion of the research in Chinese medicine has been carried out in Asia, particularly in China, Japan and Korea, and reported in their native languages. As a result, currently available Chinese medicine literature published in English language journals does not meet the growing demand from the international scientific community for easy access to research findings in this field. Moreover, most Chinese medicine literature is scattered throughout a wide range of scienti
Toward An Effective Quality Assurance of Web-Based Learning: The perspective of Distance Learning Students
The Turkish Online Journal of Distance Education , 2003,
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