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Clustering is a useful technique that organizes a large quantity of unordered text documents into a small number of meaningful and coherent clusters, thereby providing a basis for intuitive and informative navigation and browsing mechanisms. Partitional clustering algorithms have been recognized to be more suitable as opposed to the hierarchical clustering(More)
BACKGROUND Prolonged use of lamivudine in patients coinfected with HIV and hepatitis B virus (HBV) leads to an increasing risk of lamivudine resistance in both diseases. We investigated the addition of entecavir, a potent inhibitor of HBV polymerase, to lamivudine-containing highly active antiretroviral therapy (HAART) in patients who experienced rebound in(More)
Quantification of creep of highly cross-linked polyethylene would enable separation of creep from wear when evaluating femoral head penetration into polyethylene. We compared creep magnitude of a highly cross-linked versus conventional polyethylene in the laboratory. Twelve acetabular liners of each material were tested, 6 of which had a 32-mm inner(More)
Polyethylene wear can compromise long-term performance of total knees. We investigated articular and backside wear rate of tibial inserts made from conventional vs highly cross-linked polyethylenes. The inserts were tested on a knee simulator at a frequency of 1.1 Hz using normal gait kinematics with a 7 degrees posterior slope for 7 million cycles.(More)
Clustering is a technique of grouping data with analogous data content. In recent years, Density based clustering algorithms especially SNN clustering approach has gained high popularity in the field of data mining. It finds clusters of different size, density, and shape, in the presence of large amount of noise and outliers. SNN is widely used where large(More)
During the past three years in Taiwan, we organized a series of Nightmarket Workshops to investigate Taiwanese sociocultural phenomena, and to provide cross-disciplinary environments for college students and practitioners to create interactive art pieces. In this process, we were intrigued by how the collaboration of art and science in the context of the(More)
The United States Department of Health and Human Services (HHS) must ensure that access to high quality care is provided through the Ryan White HIV/AIDS Program (RWP). The RWP is committed to improving the quality of care and services to reduce mortality and improve quality of life for people living with HIV. This commitment is evidenced by the(More)
Contamination of fine plastic particles (FPs), including micrometer to millimeter plastics (MPs) and nanometer plastics (NPs), in the environment has caught great concerns. FPs are strong adsorbents for hydrophobic toxic pollutants and may affect their fate and toxicity in the environment; however, such information is still rare. We studied joint toxicity(More)
(Preliminary – please do not cite or quote.) Abstract: This paper investigates the relationship between socioeconomic status (SES) and the spread of SARS. I focus on the SARS infection rates in 295 large-scale Hong Kong housing complexes. Using pre-SARS property values as indicators of SES, I identify a negative SES-SARS link. I also find that density,(More)