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162 results on '"Lin, Y. B."'

6. 2 years is a reasonable age cut-off level for prognostic assessment of children with hepatoblastoma.

Author

LIN, Y.-B., HUANG, S.-H., and LIU, S.

Abstract

OBJECTIVE: We aimed to elucidate the prognostic significance of age in hepatoblastoma patients. PATIENTS AND METHODS: Data from 783 patients with hepatoblastoma were obtained from the Surveillance, Epidemiology and End Results database (2000-2018). The best age cut-off level was determined by X-tile, and the Kaplan-Meier method was used to estimate overall survival (OS) and cancer-specific survival (CSS). The results of the X-tile were verified by selecting the appropriate cut-off value to maximize the difference in survival outcomes at intervals of 1 year. The Cox regression model was used to determine the prognostic impact of risk factors and age. RESULTS: X-tile analysis determined that 2 years was the best cut-off age for OS and CSS. The overall prognosis in the = 2 years group was worse than that in the < 2 years group (OS: p = 0.00017; CSS: p < 0.0001). In Cox univariate analysis, when 2 years was used as the standard group, the numbers of patients in the two groups were similar, with high hazard ratio (HR) value and narrow 95% confidence interval (CI) (OS: HR, 1.834; 95% CI, 1.329 - 2.532; p < 0.001; CSS: HR, 1.988; 95% CI, 1.410 - 2.801; p < 0.001), which was consistent with the age cut-off point determined by X-tile. Cox multivariate analysis showed that age = 2 years, black ethnicity, no surgery, no chemotherapy, distant metastasis, and tumor size = 5 cm were independent predictors of poor OS and CSS. On subgroup analysis, patients aged = 2 years had worse survival if they were Caucasian, had elevated alpha-fetoprotein, tumor size = 5 cm, or distant metastasis. CONCLUSIONS: Age is an important prognostic factor for hepatoblastoma. Age = 2 years at diagnosis may predict poor prognosis and more active treatment measures can be implemented. [ABSTRACT FROM AUTHOR]

Published
2023

12. Differential Effects of Phonological Priming on Chinese Character Recognition.

Author

Weekes, B. S., Chen, M. J., and Lin, Y-B

Abstract

Finds phonological priming effects on compound targets (characters containing separate radical components); no evidence of phonological priming on integrated targets (those not containing separate radicals); semantic priming effects on both compound and integrated target recognition, suggesting that phonological and semantic activation are coincidental during compound character recognition. Concludes that character type constrains the activation of phonology during Chinese character recognition. (SR)

Published
1998

21. Effect of hydrogenation on the ferromagnetism in polycrystalline Si1-xMnx:B thin films.

Author

Liu, X. C., Lin, Y. B., Wang, J. F., Lu, Z. H., Lu, Z. L., Xu, J. P., Lv, L. Y., Zhang, F. M., and Du, Y. W.

Subjects
*HYDROGENATION, *HYDROGEN, *FERROMAGNETISM, *POLYCRYSTALS, *THIN films, *BORON, *CHEMICAL vapor deposition, *MAGNETICS
Abstract

Polycrystalline Si1-xMnx films codoped with boron have been prepared by radio-frequency magnetron sputtering deposition followed by post-thermal processing for crystallization. The polycrystalline thin films were treated by hydrogen plasma excited with approach of radio-frequency plasma-enhanced chemical vapor deposition. It has been found that the saturation magnetization decreases after hydrogenation while the structural properties of the films do not show any change. At the same time, it is observed that after hydrogenation the hole concentration in the films is lower than that before the treatment, believed to be due to a combination between hydrogen and boron. The obvious correlation between the magnetic properties and the transport properties of the polycrystalline Si1-xMnx films suggests that there be a mechanism of hole-mediated ferromagnetism for Si-based diluted magnetic semiconductors. [ABSTRACT FROM AUTHOR]

Published
2007
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29. A SIP-based call center with waiting time prediction

Author

Hsu, MengTa, Lin, Y. B., Li, Bo, Chang, Ming Fu, Hsu, MengTa, Lin, Y. B., Li, Bo, and Chang, Ming Fu

Abstract

A call center in a company is a centralized office that answers incoming telephone calls from customers or makes outgoing telephone calls to customers. A call center may also provide fax, Voice over IP (VoIP), e-mail or web-based interactions. This paper proposes a plug-in modular architecture for an Internet call center with waiting time prediction. We implement this plug-in module in the SIP Express Router (SER) platform. Then we propose two output measures and develop a discrete event simulation model to investigate the performance of the waiting time prediction algorithm for the call center. Our study indicates that the waiting times can be more accurately predicted when the call arrival rate is large.

Published
2006

41. An adaptive measured-based preassignment scheme with connection-level QoS support for mobile networks

Author

Luo, Xiaoyuan, Li, Bo, Thng, Ian, Lin, Y. B., Chlamtac, Imrich, Luo, Xiaoyuan, Li, Bo, Thng, Ian, Lin, Y. B., and Chlamtac, Imrich

Abstract

This paper presents a new adaptive bandwidth allocation scheme to prevent handoff failure in wireless cellular networks, known as the measurement-based preassignment (MPr) technique. This technique is particularly useful in micro/pico cellular networks which offers quality-of-service (QoS) guarantee against call dropping: The proposed MPr scheme distinguishes itself from the well-known guarded channel (GC) based schemes in that it allows the handoff calls to utilize a prereserved channel. pool before competing for the shared channels with new call arrivals. The key advantage of the proposed MPr scheme is that it enables easy derivation of the number of channels that needs to be reserved for handoff based on a predetermined handoff dropping probability, without the need for solving the often complex Markov chain required in GC schemes; thus, making the proposed MPr scheme-simple and efficient for implementation. This is essential in handling multiple traffic types with potentially different QoS requirements. In addition, the MPr scheme is adaptive in that it can dynamically adjust the number of reserved channels for the handoff according to the periodical measurement of the traffic status within a local cell; thus completely eliminating the signaling overhead for status information exchange among cells mandated in most existing channel allocation schemes. Numerical results and comparisons are given to illustrate the tradeoff.

Published
2002

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