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Kinanthropometry Study of the Physique of Hong Kong and the Interior of China Correctional Services Recruits

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Journal of China Textile University(English Edition) 1999年第4期16卷 73-76页

作者： tsang-ngbrenda ChanCheeKooi TaylorGail

In this paper,the physique of the Hong Kong Correc-tional Services recruits were identified and *** has been applied in the study of Olympic athletes and researchers concluded that specificsports were correlated with a specific type of *** involved in the same sports have a similar phys-ique as well as body *** medal winners could beidentified by their specific type of body *** ath-letes in different sport have different and specific ***,by applying kinanthropometry study,people in different occupations could be identified by their specific body shape and *** finalisedbody shape can be used as reference in the vetting *** somatotyping and anthropometric input canbe used to improve the uniform sizing system.

关键词： kinanthropometry physique body shape sam-atotyping.

A METHOD FOR PERFORMANCE MODELING AND EVALUATION OF LDPC DECODER ARCHITECTURE

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International Journal of Modeling, Simulation, and Scientific Computing 2013年第2期4卷 101-114页

作者： TONY tsang Hong Kong Polytechnic University Hung Hom Hong Kong

This paper presents a high-throughput memory efficient decoder for low density parity check(LDPC)codes in the high-rate wireless personal area network *** novel techniques which can apply to our selected LDPC code is proposed,including parallel blocked layered decoding architecture and simplification of the WiGig ***-of-the-art flexible LDPC decoders cannot simultaneously achieve the high throughput mandated by these standards and the low power needed for mobile *** work develops a flexible,fully pipelined architecture for the IEEE 802.11ad standard capable of achieving both *** use Real Time–Performance Evaluation Process Algebra(RT-PEPA)to evaluate a typical LDPC Decoder system’s *** approach is more convenient,flexible,and lower cost than the former simulation method which needs to develop special hardware and software ***,we can easily analyze how changes in performance depend on changes in a particular mode by supplying ranges for parameter values.

关键词： LPDC IEEE 802.11.ad RT-PEPA performance analysis formal modeling.

Recent progress on the Dirichlet divisor problem and the mean square of the Riemann zeta-function

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Science China Mathematics 2010年第9期53卷 2561-2572页

作者： tsang Kai-Man Department of Mathematics The University of Hong Kong

Let Δ(x) and E(t) denote respectively the remainder terms in the Dirichlet divisor problem and the mean square formula for the Riemann zeta-function on the critical *** article is a survey of recent developments on the research of these famous error terms in number *** include upper bounds,Ω-results,sign changes,moments and distribution,etc.A few open problems are also discussed.

关键词： divisor problems Riemann’s zeta-function mean values

Efects of solution chemistry on arsenic(V) removal by low-cost adsorbents

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Journal of Environmental Sciences 2013年第11期25卷 2291-2298页

作者： Yuru Wang Daniel C.W.tsang Department of Civil and Environmental Engineering Hong Kong Polytechnic University Department of Civil and Natural Resources Engineering University of Canterbury

Natural and anthropogenic arsenic （As） contamination of water sources pose serious health concerns, especially for small communities in rural areas. This study assessed the applicability of three industrial byproducts （coal fly ash, lignite, and green waste compost） as the low-cost adsorbents for As（V） removal under various field-relevant conditions （dissolved oxygen, As（V）/Fe ratio, solution pH, and presence of competing species）. The physico-chemical properties of the adsorbents were characterized by XRD, XRF, FT-IR, and NMR analysis. Batch experiments demonstrated that coal fly ash could provide effective As（V） removal （82.1%-95%） because it contained high content of amorphous iron/aluminium hydroxides for As（V） adsorption and dissolvable calcium minerals for calcium arsenate precipitation. However, the addition of lignite and green waste compost was found unfavourable since they hindered the As（V） removal by 10%-42% possibly due to dissolution of organic matter and ternary arsenate-iron-organic matter complexes. On the other hand, higher concentrations of dissolved iron （comparing As（V）/Fe ratios of 1：1 and 1：10） and dissolved oxygen （comparing 0.2 and 6 mg/L） only marginally enhanced the As（V） removal at pH 6 and 8. Thus, addition of dissolved iron, water aeration, or pH adjustment became unnecessary because coal fly ash was able to provide effective As（V） removal under the natural range of geochemical conditions. Moreover, the presence of low levels of background competing （0.8 or 8 mg/L of humic acid, phosphate, and silicate） imposed little influence on As（V） removal, possibly because the high adsorption capacity of coal fly ash was far from exhaustion. These results suggested that coal fly ash was a potentially promising adsorbent that warranted further investigation.

关键词： adsorption arsenic coal fly ash green waste compost lignite

Waring-Goldbach Problem for Unlike Powers

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Acta Mathematica Sinica,English Series 2007年第2期23卷 265-280页

作者： Xiu Min REN Kai Man tsang Department of Mathematics Shandong University Department of Mathematics The University of Hong Kong

In this paper, it is proved that with at most O（N65/66） exceptions, all even positive integers up to N are expressible in the form p^2 2＋p^3 3＋p^4 4＋p^5 5. This improves a recent result O（N19193/19200＋ε） due... 详细信息

关键词： Waring-Goldbach problem circle method exceptional set

The role of Epstein-Barr virus infection in the pathogenesis of nasopharyngeal carcinoma

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Virologica Sinica 2015年第2期30卷 107-121页

作者： Chi Man tsang Sai Wah Tsao Department of Anatomy Li Ka Shing Faculty of Medicine University of Hong Kong Hong Kong SAR China

Nasopharyngeal carcinoma(NPC) is closely associated with Epstein-Barr virus(EBV) infection. EBV episomes are detected in almost all NPC cells. The role of EBV in NPC pathogenesis has long been postulated but remains enigmatic. In contrast to infection of B lymphocytes, EBV infection does not directly transform nasopharyngeal epithelial cells into proliferative clones with malignant potential. EBV infection of normal pharyngeal epithelial cells is predominantly lytic in nature. Genetic alterations in premalignant nasopharyngeal epithelium, in combination with inflammatory stimulation in the nasopharyngeal mucosa, presumably play essential roles in the establishment of a latent EBV infection in infected nasopharyngeal epithelial cells during the early development of NPC. Establishment of latent EBV infection in premalignant nasopharyngeal epithelial cells and expression of latent viral genes, including the BART transcripts and BART-encoded micro RNAs, are crucial features of NPC. Expression of EBV genes may drive further malignant transformation of premalignant nasopharyngeal epithelial cells into cancer cells. The difficulties involved in the establishment of NPC cell lines and the progressive loss of EBV epsiomes in NPC cells propagated in culture strongly implicate the contribution of host stromal components to the growth of NPC cells in vivo and maintenance of EBV in infected NPC cells. Defining the growth advantages of EBV-infected NPC cells in vivo will lead to a better understanding of the contribution of EBV infection in NPC pathogenesis, and may lead to the identification of novel therapeutic targets for NPC treatment.

关键词： Epstein-Barr virus(EBV) nasopharyngeal carcinoma latent infection pathogenesis inflammation

Analysis of Landslide Dam Geometries

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Journal of Mountain Science 2011年第4期8卷 544-550页

作者： tsang Yun-Chung SHIEH Chjeng-Lun Department of Hydraulic and Ocean Engineering National Cheng-Kung University

The geometry of a landslide dam is an important component of evaluating dam ***,the geometry of a natural dam commonly cannot be obtained immediately with field investigations due to their remote locations.A rapid evaluation model is presented to estimate the geometries of natural dams based on the slope of the stream,volume of landslides,and the properties of the *** proposed model uses high resolution satellite images to determine the geometry of the landside *** satellite images are the basic information to a preliminary stability analysis of a natural *** study applies the proposed method to two case studies in *** is the earthquakeinduced Lung-Chung landslide dam in Taitung,and the second is the rainfall-induced Shih-Wun landslide dam in Pingtung.

关键词： Landslide dam Geometries Stability

Breaking the resolution-bandwidth limit of chip-scale spectrometry by harnessing a dispersion-engineered photonic molecule

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Light(Science & Applications) 2023年第3期12卷 475-488页

作者： Hongnan Xu Yue Qin Gaolei Hu Hon Ki tsang Department of Electronic Engineering The Chinese University of Hong KongShatinNew TerritoriesHong Kong SARChina

The chip-scale integration of optical spectrometers may offer new opportunities for in situ bio-chemical analysis,remote sensing,and intelligent health *** miniaturization of integrated spectrometers faces the challenge of an inherent trade-off between spectral resolutions and working ***,a high resolution requires long optical paths,which in turn reduces the free-spectral range(FSR).In this paper,we propose and demonstrate a ground-breaking spectrometer design beyond the resolution-bandwidth *** tailor the dispersion of mode splitting in a photonic molecule to identify the spectral information at different *** tuning over a single FSR,each wavelength channel is encoded with a unique scanning trace,which enables the decorrelation over the whole bandwidth spanning multiple *** analysis reveals that each left singular vector of the transmission matrix is mapped to a unique frequency component of the recorded output signal with a high sideband suppression ***,unknown input spectra can be retrieved by solving a linear inverse problem with iterative *** results demonstrate that this approach can resolve any arbitrary spectra with discrete,continuous,or hybrid *** ultrahigh resolution of100 nm far exceeding the narrow *** ultralarge wavelength-channel capacity of 2501 is supported by a single spatial channel within an ultrasmall footprint(≈60×60μm^(2)),which represents,to the best of our knowledge,the highest channel-to-footprint ratio(≈0.69μm^(−2))and spectral-to-spatial ratio(>2501)ever demonstrated to date.

关键词： resolution dispersion limit

Mesenteric ischemia with intrasplenic gas:A case report

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World Journal of Clinical Cases 2025年第7期13卷 52-56页

作者： Hsiang-Yu tsang Chee-Chien Yong Hao-Ping Wang Department of Surgery Kaohsiung Chang Gung Memorial HospitalKaohsiung 833401Taiwan

BACKGROUND Acute mesenteric ischemia is a life-threatening *** gas is an extremely rare finding in such *** SUMMARY We report a case of a 79-year-old woman with a history of end-stage renal disease on hemodialysis for approximately 20 years,type 2 diabetes mellitus,and atrial fibrillation who presented with two days of epigastric pain.A computed tomography scan of the abdomen revealed intraperitoneal free air and significant intrasplenic *** revealed diffuse intestinal gangrene,and acute superior mesenteric ischemia was *** patient died within 24 hours owing to profound *** Intrasplenic gas is an extremely rare finding on computed tomography imaging in cases of acute mesenteric ischemia.

关键词： Acute mesenteric ischemia Spleen Hepatic portal venous gas Pneumatosis cystoides intestinalis Prognosis Case report