Browsing by Issue Date, starting with "1995-06-15"

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半坡之豬
(1995-06-15)
管管
GROWTH AND FERROELECTRICITY OF EPITAXIAL-LIKE BATIO3 FILMS ON SINGLE-CRYSTAL MGO, SRTIO3, AND SILICON SUBSTRATES SYNTHESIZED BY PULSED-LASER DEPOSITION
(1995-06-15)
LIN, WJ
;
TSENG, TY
;
LU, HB
;
TU, SL
;
YANG, SJ
半坡之豬
(1995-06-15)
管管
半坡之豬
(1995-06-15)
管管
半坡之豬
(1995-06-15)
管管
CALCULATION OF THE STRUCTURAL DEPENDENCE OF INFRARED-ABSORPTION IN P-TYPE STRAINED-LAYER SIGE/SI QUANTUM-WELLS
(1995-06-15)
LIOU, TS
;
WANG, TH
;
CHANG, CY
;
交大名義發表
;
電子工程學系及電子研究所
THE EFFECT OF PREPARATION PROCESS OF PMDA-ODA-DR1 POLYIMIDE ON ITS 2ND-HARMONIC GENERATION CHARACTERISTICS
(1995-06-20)
CHANG, CJ
;
WHANG, WT
;
HUANG, JY
;
LIAO, CL
;
LIU, JM
In situ second harmonic generation (SHG) observation of PMDA-ODA-DR1 polyimide films prepared by different preparative procedures were studied to understand the effects of the residual acid and the imidization byproduct and the extent of imidization on the SHG characteristics of the PMDA-ODA-DR1 polyimides. PMDA-ODA-DR1 polyimides with or without removal of salt were also investigated to study the influence of remaining triethyl hydrogen ammonium chloride salt on the SHG characteristics and reliability of the polymers. A blue shift in the UV/vis spectrum during poling was observed for the low-temperature-baked film, but did not occur for the high-temperature-baked film. Both high-temperature imidization and removal of the byproduct organic salt did not only improve the poling efficiency of PMDA-ODA-DR1 polyimide as a SHG material, but also slowed down the relaxation of the film and made the film more reliable. (C) 1995 John Wiley and Sons, Inc.
EFFECTS OF POLYMER MATRIX AND SALT CONCENTRATION ON THE IONIC-CONDUCTIVITY OF PLASTICIZED POLYMER ELECTROLYTES
(1995-06-20)
WHANG, WT
;
LU, CL
;
交大名義發表
;
材料科學與工程學系
;
National Chiao Tung University
Two polar polymers with different dielectric constants, poly(vinylidene fluoride) (PVDF) and poly (ethylene oxide) (PEG), were each blended with a chlorine-terminated poly(ethylene ether) (PEG) and one of the two salts, LiBF4 and LiCF3CO2, to form PEC-plasticized polymer electrolytes. The room-temperature ionic conductivity of the PEC-plasticized polymer electrolytes reached a value as high as 10(-4) S/cm. The room-temperature ionic conductivity of the PVDF-based polymer electrolytes displayed a stronger dependence on the PEC content than did the PEG-based polymer electrolytes. In PVDF/PEC/LiBF4 polymer electrolytes, the dynamic ionic conductivity was less dependent on temperature and more dependent on the PEC content than it was in PEO/PEC/LiBF4 polymer electrolytes. The highly plasticized PVDF-based polymer electrolyte film with a PEC content greater than CF4 (CF4 defined as the molar ratio of the repeat units of PEC to those of PVDF equal to 4) was self-supported and nonsticky, while the corresponding PEG-based polymer electrolyte film was sticky. In these highly plasticized PVDF-based polymer elec trolytes, the curves of the room-temperature ionic conductivity vs. the salt concentration were convex because the number of carrier ions and the chain rigidity both increased with increase of the salt content. The maximum ionic conductivity at 30 degrees C was independent of the PEC content, but it depended on the anion species of the lithium salts in these highly plasticized polymer electrolytes. (C) 1995 John Wiley and Sons, Inc.
THE ACHROMATIC INDEXES OF THE REGULAR COMPLETE MULTIPARTITE GRAPHS
(1995-06-28)
CHIANG, NP
;
FU, HL
;
應用數學系
;
Department of Applied Mathematics
In this paper, we study the achromatic indices of the regular complete multipartite graphs and obtain the following results: (1) A good upper bound for the achromatic index of the regular complete multipartite graph which gives the exact values of an infinite family of graphs and solves a problem posed by Bouchet. (2) An improved Bouchet coloring which gives the achromatic indices of another infinite family of regular complete multipartite graphs.
TIME EVOLUTION AND MULTIPHOTON IONIZATION OF RYDBERG WAVEPACKET IN MICROWAVE FIELDS
(1995-06-30)
JIANG, TF
;
CHU, SI
;
物理研究所
;
Institute of Physics
We present a theoretical study of the time evolution of Rydberg wavepacket, initially localized in radial space and mimicking the classical particle, undergoing microwave multiphoton ionization. The dynamical behavior of the Rydberg wavepacket is found to be different from that of Rydberg atoms initially prepared at given Rydberg eigenstates. It is seen that the Rydberg wavepacket can exhibit collapse and revival behavior in the short time regime. Further, both the microwave ionization rates and the quantum phase space trajectories of the Rydberg wavepackets exhibit qualitatively different behavior in small scaled-frequency (omega(s) (=omega n(0)(3)) << 1.0) and large scaled-frequency (omega(s) greater than or equal to 1.0) regimes.
ON A SATELLITE COVERAGE PROBLEM
(1995-07-01)
CHI, DT
;
SU, YT
;
電信工程研究所
;
電子與資訊研究中心
;
Institute of Communications Engineering
The earth coverage area for a satellite in an Earth synchronous orbit with a non-zero inclination angle is a function of the time of day. Locating the area where an Earth terminal can establish a link with a geosynchronous satellite at a certain period of the day is of great concern to system designers: A special case of much interest is when the time period of satellite coverage is 24 h. Two simple and rapid algorithms for locating 24 h satellite coverage areas are presented. One of the proposed algorithms can also be applied to determine other airborne antenna coverage problems.
CHROMIC-ACID RECOVERY FROM CHROME PLATING RINSE WATER BY ION-EXCHANGE
(1995-07-01)
TAN, H
;
交大名義發表
;
應用化學系
;
National Chiao Tung University
;
Department of Applied Chemistry
The regeneration of an anion bed saturated with dichromate ions by treatment with NaOH solution was studied in connection with the treatment of chrome plating rinse water by ion exchange. Column experiments were conducted to obtain an Cr(VI) elution curve and OH- breakthrough curve. The parametric effects of bed height, NaOH feed concentrations, and flow rate on the performance of regeneration were investigated. It was found that for a bed height of 70 cm and NaOH feed concentration of 1.5 to 2 mol/L with a flow rate of 100-150 mL/hr, up to a maximum concentration of 100 g/L of CrO3 could be obtained. Under the above operating conditions, the regenerant consumption is about 1.65 mole of OH- per mole of Cr(VI) recovered and the resin utilization is about 80%. An attempt is made to employ a simple analytic equation to correlate the OH- breakthrough and Cr(VI) elution data. The results of this work may be useful in the design and operation of systems for recovery and reuse of chromic acid by ion exchange in the chrome electroplating process.
DESIGN OF AN EFFICIENT DATA-DRIVEN PIPELINED COMPUTER ARCHITECTURE
(1995-07-01)
LIN, CZ
;
TSENG, CC
;
CHI, KH
;
交大名義發表
;
資訊工程學系
The combination of dataflow and von Neumann execution models is a recent trend in the design of high performance computers. In this paper, a data-driven hybrid computer architecture is presented. Instead of a program counter, the principle of dynamic data-driven execution is used to control the execution of instructions in a von Neumann-style pipeline architecture. One of the operands of each dyadic instruction is explictly stored in memory, and the memory locations of the stored operands are used as tags. Matching is accomplished by simply checking a present flag and no special matching unit is required. No bubbles will occur in the pipe if sufficient parallelism exists in the program. Experimental results show that the proposed architecture outperforms two previously proposed architectures.
A DOUBLE METAL STRUCTURE PT/AL/N-INP DIODE
(1995-07-01)
HUANG, WC
;
LEI, TF
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LEE, CL
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電子工程學系及電子研究所
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Department of Electronics Engineering and Institute of Electronics
POLYURETHANES SYNTHESIZED FROM POLYESTER POLYOLS DERIVED FROM PET WASTE .1. SYNTHESIS AND REACTION-KINETICS
(1995-07-01)
LEE, SC
;
SZE, YW
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LIN, CC
;
交大名義發表
;
應用化學系
AN OPTIMAL ALGORITHM FOR FINDING THE MOST VITAL EDGE WITH RESPECT TO SKT RELIABILITY IN BSP DIGRAPHS
(1995-07-01)
WANG, PF
;
LEU, SC
;
HSU, LH
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資訊工程學系
;
Department of Computer Science
The SKT reliability is the probability that a source can send communication to a specified set of terminals K in V in a probabilistic digraph D = (V, E). ''The most vital edge'' is the edge whose deletion yields the largest decrease in the SKT reliability. A digraph is a basically-series-parallel(BSP) directed graph if its underlying undirected graph is series-parallel. In this paper, we propose a tree-like structure and present an optimal algorithm with linear time complexity for finding the most vital edge with respect to SKT reliability in BSP digraphs.
ORIENTATION DEPENDENCE OF COHERENT HOLE OSCILLATIONS IN GAAS/ALGAAS COUPLED QUANTUM-WELLS
(1995-07-01)
CHANG, CY
;
LU, MF
;
CHEN, PA
;
JUANG, C
;
電控工程研究所
Coherent hole tunneling dynamics in GaAs/AlGaAs coupled quantum wells (CQWs) based on (100)- and (111)-oriented GaAs substrates are investigated. The tunneling probability of the hole wave packet for a heavy-hole to heavy-hole (HH-HH) band and a light-hole to Light-hole (LH-LH) band is described based on the results of a time-dependent analysis. It is demonstrated that the CQW HH-HH oscillation frequency on (100) substrates is larger than that on (111) substrates due to a significantly lighter in-plane effective mass. However, the LH-LH spatial tunneling oscillation frequency on (100) substrates is smaller than that on (111) substrates.
Lyapunov-based quantitative analysis of robust stability
(1995-07-01)
Chen, HG
;
Han, KW
;
電控工程研究所
;
Institute of Electrical and Control Engineering
The robust stability of control systems with perturbation is considered. Using Lyapunov functions, quantitative bounds on the perturbation ave obtained such that the systems remain stable. Foul classes of perturbations are treated and four measures of robust stability are proposed: the nondelay unstructured, delayed unstructured, nondelay structured and delayed structured measures. Examples are given, and comparisons with the results given in current literature are made.
LOW-TEMPERATURE PROCESSED MOSFETS WITH LIQUID-PHASE DEPOSITED SIO2-XFX AS GATE INSULATOR
(1995-07-01)
YEH, CF
;
LIN, SS
;
HONG, TY
;
電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
Device performances of MOSFET's with SiO2-xFx gate oxides prepared by an extremely low-temperature (15 degrees C) liquid phase deposition (LPD) method were investigated. The electrical characteristics, including threshold voltage of 2.1 V, peak effective mobility (mu(eff)) of 525 cm(2)V . s, and subthreshold suing of 134 mV/decade, show the devices exhibit comparable performance to other low-temperature processed MOSFET's. This demonstrates that LPD SiO2-xFx can be a suitable candidate for future gate insulators in low-temperature processed MOSFET's.
倉庫與名字
(1995-07-01)
管管