This study evaluated the mechanical accuracy of an in-house-developed couch-based tracking system (CBTS) according to respiration data. The overall delay time of the CBTS was calculated, and the accuracy, reproducibility, and loading effect of the CBTS were evaluated according to the sinusoidal waveform and various respiratory motion data of real patients with and without a volunteer weighing 7...

Data Aggregation techniques are used in wireless sensor networks (WSNs) to collect the data samples from sensor nodes (SNs). Data aggregation techniques for WSNs must address to the issues of WSNs like limited energy, fast and efficient query response, which are essential for network’s performance and maintenance. In this paper, we propose an energy-efficient cluster based task scheduling algor...

Nineteen counties from San Francisco and Los Angeles, California and Seattle, Washington were the United States sites for a large population-based case-control study of childhood brain tumors (CBTs), sponsored by the National Cancer Institute. CBT patients who were < 20 years of age and were diagnosed between 1984 and 1991 were reported to each region's cancer registry. The 801 control subjects...

Computer technology has provided language testing experts with opportunity to develop computerized versions of traditional paper-based language tests. New generations of TOEFL and Cambridge IELTS, BULATS, KET, PET are good examples of computer-based language tests. Since this new method of testing introduces new factors into the realm of language assessment ( e.g. modes of test delivery, famili...

This study aimed to assess health-related quality of life (HRQOL)-mean scores and percentages at risk for impaired HRQOL in childhood brain tumor survivors (CBTS) and to explore differences between CBTS treated with surgery only (SO) versus CBTS treated with surgery and adjuvant therapy (SA). HRQOL was evaluated in 34 CBTS (mean age=14.7 y; mean time since the end of treatment=6.4 y) with the K...

Chip and system design can be made more efficient and attractive by using multimedia training techniques. In our case, these techniques are employed as a supplement of classical teaching. We point out the need for the development of own computer based training material (CBT). To reduce the high expenses of multimedia productions, we propose a universal Reference Model as a framework for CBTs in...

In Nepal, hepatitis B and hepatitis C are considerable health problems. This study aimed to assess the trends of hepatitis B virus (HBV) and hepatitis C virus (HCV) seroprevalence in blood donors over the last 6 years nationwide and in the urbanized setting of Kathmandu Valley. This was a retrospective study conducted among Nepalese blood donors through the years 2001/2002-2006/2007. Serum samp...