Trung Pham - Academia.edu (original) (raw)

Papers by Trung Pham

Recent advances in wireless communications and electronics have promoted the development of wirel... more Recent advances in wireless communications and electronics have promoted the development of wireless sensor networks (WSN) for a wide variety of applications. The size and power constraints of sensor nodes are the main concerns in the design of robust and efficient routing protocols. Consequently, various approaches, such as data-centric approach, hierarchical approach and location-based approach, are available. Each may be designed for a particular application with specific requirements. In this paper, we design and implement a data-centric routing protocol for WSNs, namely Centralized Sensor Protocol for Information via Negotiation (CSPIN), which combines the advertise-requesttransfer process and a routing distribution mechanism. Implementation of the protocol was completed with the Crossbow MicaZ hardware using nesC/TinyOS.

Today NAND flash memory is used for data and code storage in digital cameras, USB devices, cell p... more Today NAND flash memory is used for data and code storage in digital cameras, USB devices, cell phones, camcorders, and solid-state disk drives. To satisfy the market demand for lower cost per bit and higher density nonvolatile memory, in addition to technology scaling, 2 b/cell MLC technology was introduced. Recently MLC NAND flash memories with more than 2 b/cell have

Page 1. Proceedings of the 2003 IEEE International Symposium on Intelligent Control Houston, Texa... more Page 1. Proceedings of the 2003 IEEE International Symposium on Intelligent Control Houston, Texas * October 54,2003 A Fuzzy Approach to Discrete and Continuous Ontimizations in Path Planning I Trung T. Pham DIcentral ...

Citeseer

CiteSeerX - Document Details (Isaac Councill, Lee Giles): Abstract. This paper presents the conce... more CiteSeerX - Document Details (Isaac Councill, Lee Giles): Abstract. This paper presents the conception of a tri-dimensional geographical information system applied to domains of architectural & urban planning, and introduces an approach to integrate the environmental urban ...

Acoustics, Speech, and …, 2002

Page 1. u1.1 ABSTRACT A CONSTRAINED FREQUENCY-DOMAIN PRONY'S ALGORITHM WITH APPLICATION TO T... more Page 1. u1.1 ABSTRACT A CONSTRAINED FREQUENCY-DOMAIN PRONY'S ALGORITHM WITH APPLICATION TO TIME DELAY ESTIMATION* Rui J. P. defigueiredo, Trung T. Pham, and CL Hu Department of Electrical and ...

e-Technology, e-Commerce and e-Service, 2004. …, 2004

Page 1. Quantitative Approach to Using E-Commerce Data to Monitor and Control the Performance of ... more Page 1. Quantitative Approach to Using E-Commerce Data to Monitor and Control the Performance of a Supply Chain Trung T. Pham DIcentral Corporation tpham@DIcentral. com Abstract This paper presents a quantitative approach ...

Journal of materials science …, 1996

Polyetheretherketone (PEEK) is a high-performance engineering polymer; the numerous advantages be... more Polyetheretherketone (PEEK) is a high-performance engineering polymer; the numerous advantages being ascribed to this material have been well demonstrated [1]. The crystallization behaviour of PEEK polymer gives specific desirable characteristics such as ...

e-Commerce Technology, 2004. CEC …, 2004

Page 1. Implementation of Large Catalogs for Price Enforcement in B2B E-Commerce Trung T. Pham Si... more Page 1. Implementation of Large Catalogs for Price Enforcement in B2B E-Commerce Trung T. Pham Simone K. Füchter DIcentral Corporation Universidade do sul do Brasil tpham@DIcentral.com simonekf@terra.com.br Abstract ...

Proceedings of the 1996 ACM symposium on Applied …, 1996

... The detailed proof of convergence of the fuzzy modeling of a manipulator is too long and comp... more ... The detailed proof of convergence of the fuzzy modeling of a manipulator is too long and complicated and therefore not in the scope of this paper [111. ... [6] Trung T. Pham, and Guanrong Chen. ... [71 Bill P. Buckles, and Frederick E. Petry (editors). ...

E-Commerce, 2003. CEC 2003. IEEE International …, 2003

This paper outlines the process of adopting electronic data interchange into a business cycle and... more This paper outlines the process of adopting electronic data interchange into a business cycle and the issues encountered in the process. These issues are categorized into technical, financial, scheduling, and ethical areas. Real-life case studies are presented to illustrate the difficulties of adopting electronic data interchange. Common-sense experiences from these case studies are summarized as strategic moves that might be helpful in avoiding the pain that others have already experienced.

Solid-State Circuits …, 2009

506 2008 IEEE International Solid-State Circuits Conference ... ISSCC 2008 / SESSION 28 / NON-V... more 506 2008 IEEE International Solid-State Circuits Conference ... ISSCC 2008 / SESSION 28 / NON-VOLATILE MEMORY & DIGITAL CLOCKING / 28.1 ... 28.1 A 16Gb 3b/ Cell NAND Flash Memory in 56nm with 8MB/s Write Rate ... Yan Li1, Seungpil Lee1, Yupin Fong1, Feng ...

Nature …, 2008

Nature Immunology is a multidisciplinary journal that publishes papers of the highest quality and... more Nature Immunology is a multidisciplinary journal that publishes papers of the highest quality and significance in all areas of immunology. Priority is given to work that provides fundamental insight into the workings of the immune system. Areas covered include, but are not limited to ...

The Journal of clinical …, 2009

Maintenance of vascular integrity is critical for homeostasis, and temporally and spatially regul... more Maintenance of vascular integrity is critical for homeostasis, and temporally and spatially regulated vascular leak is a central feature of inflammation. Sphingosine-1-phosphate (S1P) can regulate endothelial barrier function, but the sources of the S1P that provide this activity in vivo and its importance in modulating different inflammatory responses are unknown. We report here that mutant mice engineered to selectively lack S1P in plasma displayed increased vascular leak and impaired survival after anaphylaxis, administration of platelet-activating factor (PAF) or histamine, and exposure to related inflammatory challenges. Increased leak was associated with increased interendothelial cell gaps in venules and was reversed by transfusion with wild-type erythrocytes (which restored plasma S1P levels) and by acute treatment with an agonist for the S1P receptor 1 (S1pr1). S1pr1 agonist did not protect wild-type mice from PAF-induced leak, consistent with plasma S1P levels being sufficient for S1pr1 activation in wild-type mice. However, an agonist for another endothelial cell Gi-coupled receptor, Par2, did protect wild-type mice from PAF-induced vascular leak, and systemic treatment with pertussis toxin prevented rescue by Par2 agonist and sensitized wild-type mice to leak-inducing stimuli in a manner that resembled the loss of plasma S1P. Our results suggest that the blood communicates with blood vessels via plasma S1P to maintain vascular integrity and regulate vascular leak. This pathway prevents lethal responses to leak-inducing mediators in mouse models.

Endocrinology, 2003

The ability of metals to activate estrogen receptor-(ER ) was measured in the human breast cancer... more The ability of metals to activate estrogen receptor-(ER ) was measured in the human breast cancer cell line, MCF-7. Similar to estradiol, treatment of cells with the divalent metals copper, cobalt, nickel, lead, mercury, tin, and chromium or with the metal anion vanadate ...

AIChE Journal, 2013

ABSTRACT The results of catalytic treatment of vapors exiting a g/min pyrolysis unit before produ... more ABSTRACT The results of catalytic treatment of vapors exiting a g/min pyrolysis unit before product condensation to the liquid phase using a Ru/TiO2 catalyst for oak and switchgrass pyrolysis are reported. The pyrolysis is conducted at 500°C and the catalysis at 400°C at atmospheric pressure with a hydrogen partial pressure of 0.58 atm. It is found that the catalytic treatment provides significant conversion of light oxygenates to larger, less oxygenated, molecules and, simultaneously, bio-oil phenolics are also converted to less oxygenated phenolics with methoxy methyl groups transferred to the ring. The activity of the catalyst gradually diminished with increasing biomass fed to the system. Untreated pyrolysis oil forms a single liquid phase with some tarry material, consistent with the literature, whereas the treated liquid product forms separate oil and aqueous phases, the latter of which is about 80% water. The oil from the treated vapors has a lower initial viscosity with only a small increase upon accelerated aging compared to the untreated product oil, which has a dramatic increase in viscosity after aging. This is indicative of poor oil stability for untreated oil that is further confirmed by large increases in molecular weight, while the treated oil has a small increase in molecular weight after accelerated aging. In an effort to understand compatibility with refinery streams, the solubility of the oils in tetralin was examined. The untreated oil was found to have very limited solubility in tetralin, whereas the treated oil phase was completely soluble except for a small aqueous phase that appeared. There are a number of challenges in developing a high yield process for pyrolysis based conversion of biomass to transportation fuels. The Ru/TiO2 catalyst used here shows promise for conducting multiple types of favorable reactions in the presence of the full spectrum of primary pyrolysis products that creates significant product stability under mild conditions. This could lead to higher liquid yields of stable, refinery compatible, product oil. © 2013 American Institute of Chemical Engineers AIChE J, 59: 2275–2285, 2013

Signal Processing and …, 2009

Page 1. A Robust Lip Center Detection in Cell Phone Environment Thanh Trung Pham , Min Gyu Song*,... more Page 1. A Robust Lip Center Detection in Cell Phone Environment Thanh Trung Pham , Min Gyu Song*, Jin Young Kim*, Seung You Na*, Sung Taek Hwang** * Dept. of ECE, Chonnam National University * * Telecommunication ...

Applied Mechanics Reviews, 2001

Introduction to Fuzzy Sets, Fuzzy Logic, and Fuzzy Control Systems. ... Body. [bold 11R19. Introd... more Introduction to Fuzzy Sets, Fuzzy Logic, and Fuzzy Control Systems. ... Body. [bold 11R19. Introduction to Fuzzy Sets, Fuzzy Logic, and Fuzzy Control Systems. ...

This paper presents a manufacturing model of a flat-end mill using a five-axis computer numerical... more This paper presents a manufacturing model of a flat-end mill using a five-axis computer numerical control (CNC) grinding machine. The profile of the helical groove can be precisely calculated using a given wheel profile and the relative movements between the workpiece and the grinding wheel. The results of the calculation of the numerical control (NC) data for all the grinding processes of the end mill are fully presented in the paper. The NC data for the machining end mill were generated from the developed program by using the given design parameters of tool geometry, wheel geometry, wheel setting, and machine setting. The effects of the design and manufacturing of the end mill were analyzed based on the computer simulation and experiment results. This study provides a practical and efficient model for the manufacturing of an end mill using a CNC grinding machine with simple programming techniques. The prediction of the end mill geometry for the designing of the proper configuration of the end mill before manufacturing and generating the NC code for machining in a CNC machine is necessary to save time and to reduce the manufacturing cost.

Page 1. Development of a Software for Effective Cutting Simulation using Advanced Octree Algorith... more Page 1. Development of a Software for Effective Cutting Simulation using Advanced Octree Algorithm. Trung Thanh Pham1, Yong Hyun Kim2, Sung Lim Ko3 1Department of Advanced Technology Fusion, Konkuk University, 2 ...