1,225 Result(s)
within
Dong-**ng Wang
Engineering
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Article
Open-channel turbulent flow over non-uniform gravel beds
the measurements of flow over non-uniform gravel open channel have been conducted with Laser Doppler Velocimetry (LDV). The experimental results indicate that the distribution of mean velocity agrees well with...
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Chapter and Conference Paper
Global Optimization of Mechanical Designs Based upon Integrated Computer Models and Virtual Prototypes
Recent advances in Computer-Aided Design and Engineering (CAD/CAE) made virtual prototy** feasible. Instead of going through the costly and time-consuming physical prototype development and testing process, ...
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Article
Bit commitment using pseudo-random synthesizer
This paper presents two practical message commitment schemes: one is suitable for committing many bits, and another is useful for committing any bit-long message. They are provably secure based on pseudo-rando...
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Article
Effect of electrostatic reduced-gravity environment on the crystallographic parameters of melt-crystallized polypropylene
An electrostatic reduced-gravity device was developed and used specially for the study of the melt crystallization of polypropylene. The crystal structure of melt-crystallized polypropylene prepared under the ...
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Article
The magnetic properties and effective magnetic anisotropy of Fe-Ni ultrafine particles
Fe100−x Ni x alloys of ultrafine particle with the average grain size of about 10 nm were synthesized by mechanically alloying process. The samples were investig...
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Article
A novel structure of all-optical type silicon microresonator
A novel All-Optical type Silicon MicroResonator (AOSMR), with exciting and testing optical fibers is reported in this paper. It consists of a ridge optical waveguide and input and output optical fibers to pick...
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Article
Synthesis and thermal stability of antimony tris (thioethyl stearate) for PVC
A novel type of thermal stabilizer-antimony tris (thioethyl stearate) (ATS) was synthsized. Its thermal stability was measured by heat-aging oven test when incorporated into PVC. ATS was synthesized from stear...
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Chapter and Conference Paper
ISP’s Internet Backbone Augmentation using Virtual Link Configuration in Link-state Routing
This paper addresses the backbone augmentation problem arising from ISP’s hierarchical link-state routing operations. Focusing on Virtual Link (VL) configuration, proposed is an efficient augmentation scheme o...
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Article
Separation of cobalt and nickel by non-equilibrium solvent extraction
The separation of cobalt and nickel in the ammoniacal sulfate solution by non-equilibrium solvent extraction with a phosphate (P303) as extractant was studied. In the experiment, the effects of equilibrium pH ...
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Article
Parametric study for conductor design of KSTAR PF coils
Large superconducting magnets such as ITER (International Thermonuclear Experimental Research) or KSTAR (Korean Superconducting Tokamak Advanced Research) magnet system adopted a cable-in-conduit conductor (CI...
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Article
The phase transition of syndiotactic polystyrene induced by electrostatic field
The crystal structure and morphology of syndiotactic polystyrene (sPS) melt-crystallized in various electrostatic fields have been investigated by using wide angle X-ray diffraction (WAXD), differential scanni...
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Article
Evaluation of orthotopic liver transplantation with no veno-venous bypass
Objective: To assess the feasibility and outcome of orthotopic liver transplantation (OLT) with no veno-venous bypass(v-v bypass) in adult patients. Methods: Between 1999 and 2001, 43 adult patients underwent ...
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Article
Mechanism of effects of warm prestressing (WPS) on apparent toughness of notched steel specimens Part II: Calculations and analyses
Based on the experimental results of Part I of present work, this paper describes results of FEM calculations and analyses in details which identified that the effect of tensile-warm pre-stressing (WPS) on imp...
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Article
Mechanism of effects of warm prestressing(WPS) on apparent toughness of notched steel specimens: Part I: Experimental
In this investigation, a series of experiments are carried out in blunt notched specimens to explore the various factors controlling the warm prestressing (WPS) effect on apparent toughness of a HSLA steel. A ...
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Article
Synthesis and characterization of nanostructured Fe-Ni alloy whisker
The nanocrystalline γ - (Fe, Ni) alloy whiskers have been prepared by chemical reduction of Fe2+ and Ni2+ ions with potassium borohydride under the function of a dispersant agent PE followed by heat treatment at ...
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Article
Lubrication and tribology in seawater hydraulic piston pump
Water hydraulic systems have provoked major interest because of the human friendly and environmental safety aspects. Piston pump is one of the most frequently used hydraulic units in recent engineering techniq...
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Article
Rapid transient explosive boiling of binary mixture under pulsed-laser irradiation
Rapid transient explosive boiling of mixed ethanol and acetone of different volume fractions were investigated experimentally. The temperature of the metal film surface irradiated by a pulse laser was measured...
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Article
Development of MEMS-based Cerebrospinal Fluid Shunt System
We have developed a micro cerebrospinal fluid (CSF) shunt system with a MEMS-based micro CSF shunt valve. This valve consists of flow nozzles with membrane connected to anchor by bridges. The up-down movement ...
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Article
Decryption of pure-position permutation algorithms
Pure position permutation image encryption algorithms, commonly used as image encryption investigated in this work are unfortunately frail under known-text attack. In view of the weakness of pure position perm...
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Article
Passive control of Permanent Magnet Synchronous Motor chaotic systems
Permanent Magnet Synchronous Motor model can exhibit a variety of chaotic phenomena under some choices of system parameters and external input. Based on the property of passive system, the essential conditions...
