Browsing by Issue Date, starting with "1978-04"

Now showing 1 - 20 of 94406

銳截止單調響應曲線之低通網路設計
(交大學刊編輯委員會, 1978-04)
魏哲和
;
C.H.Wei
Effects of introducing multiple pairs of coincident jω-axis zeros in the class L filter functions are investigated. It is shown that for the same order n, modified filters with finite zeros provide sharper cutoff rate than the conventional all pole filters.Expressions for cutoff slope and minimum attenuation in the stopband are derived in terms of the order n, the number of zeros m and their locations.A design example is given to illustrate the procedures for finding out the proper transfer functions.
具有緩慢包跡變化之週期位能系統的等效韓彌爾頓理論
(交大學刊編輯委員會, 1978-04)
盧志遠
;
C.Y.Lu
Using kq-representation of quantum mechanics to formulate the problem of an electron moving in a periodic potential woth a slowly varying envelop.An explicit equation is derived for the first order, and the higher order terms can be obtained by systematic expansion. The kq-representation is briefly introduced in the Appendix.
積體注入邏輯元件之參數與性能研究
(交大學刊編輯委員會, 1978-04)
任建葳
;
C.W.Jen
The optimized mask design and process consideration of I^2L are presented which can achieve good flip-flop and ring oscillator performance. Detailed DC and AC experimental analysis for the discrete structure has been investigated. Standard Bipolar process is used which is compatible to other bipolar design.A new layout and process technique, Washed Emitter, is introduced which achieve to improve extrinsic and intrinsic efficiency greatly although there is some drawbacks in yield.
數值控制工具機切削之二維空間數學模型
(交大學刊編輯委員會, 1978-04)
鍾乾癸
;
陳稔
;
范森雄
;
C.G.Chung
;
Z.Chen
一般而言，數值控制工具機切削路徑之決定，頗為複雜，人工設計費時，宜改採用計算機輔助設計；本文提供一種簡潔設計方法，首先將二維空間的物面結構分為五種，經由此五種物面的組合可得任何一種較複雜之物面。文中提供計算機輔助設計之技巧，以達成物面切削之全面自動化設計，而縮短設計時間。其所需之記憶空間不必很大。
A=90原子核之殼層模型計算
(交大學刊編輯委員會, 1978-04)
郭明賢
;
M.H.Kuo
Using a two-range central-plus-tensor potential for the effective interaction, a shell model calculation is performed for the A =90 nuclei. The energy spectra of 90Zr,90Y and 90Sr can be well reproduced.
近期發表論文通訊
(交大學刊編輯委員會, 1978-04)
局部凸空間上的歌西問題
(交大學刊編輯委員會, 1978-04)
林朝枝
;
C.Y.Lin
Let S be a locally convex space.We use the product integration to show that Cauchy initial value problem: u'(x)=Au(x),u)o)=p,has a unique solution,where A is a function from S into itself and u is a continuously differentiable function from [0,∞) into S . The conditions required on A arethat A is dissipative, and there exists an open subset C of S such that A is continuous on C and the range of (I-εA) contains C as εis sufficiently small.
區位和生產理論
(交大學刊編輯委員會, 1978-04)
鄭國順
;
王安陽
;
K.S.Cheng
;
A.Y.Wang
We point out that the results obtained by Khalili, Mathur and Bodenhorn about the location and production theiry are partially incorrect.We give the precise results and rigorous proofs.
弱收縮變換之雙不變子空間
(交大學刊編輯委員會, 1978-04)
吳培元
;
P.Y.Wu
For a bounded linear operator T acting on a complex, separable Hilbert space, let Lat T,Lat''T and Hyperlat T denote the lattices of invariant subspace, bi-invariant subspaces and hyperinvariant subspaces of T, respectively. In this paper we characterize the elements of Lat''T, in terms of the characteristic function of T, when T is a completely non-unitary weak contraction with finite defect indices. We show that if the defect indices of T are n <= and ΘT denotes the characteristic function of T , then a subspace in Lat T belongs to Lat''T if and only if the intermediate space of its corresponding regular factorization ΘT=Θ2 Θ1 is of dimension n.As corollaries, necessary and sufficient conditions that two of these lattices of subspaces be equal to each other are obtained.In particular, if T1, T2 are completely non-unitary C11 contractions with finite defect indices which are quasi-similar to each other, then Lat''T1 is isomorphic to Lat "T2.Whether this is true for weak contractions is still unknown.
Gal-xAlxAsl-yPy均一組成的液相成長
(交大學刊編輯委員會, 1978-04)
李耀亭
;
Y.T.Lee
Aluminum and Phosphorus are distributed uniformly in Ga1-xAlxAs1-yPy epitaxial layer grown on GaAs substrate by Temperature Difference Method[4].
無外加磁場時Josephson穿遜接面間之自我共振模理論
(交大學刊編輯委員會, 1978-04)
郭義雄
;
莊建祥
;
Y.S.Gou
;
C.S.Chung
The effect of self-resonant modes without any external magnetic field in Josephson junction, the so-called "Anomalous DC Current Singularaities" by Chen et al. in 1971, is first quantitatively investigated by solving the Josephson's equation under the assumption of no external magnetic field but with a dc bias and open-ended cavity boundary conditions. The theory is on the basis of the nonlinear mutual interaction of harmonics of the superconducting current with the electrical and magnetic fields induced by the superconducting current itself in the junction cavity.A series of even-modes of current singularities in the dc current-voltage characteristics appears accordingly.It also allows us to explain the Q-value (quality value in the resonance cavity)dependence of the current singularities, behaviour of the cut-off voltage, and the maximum height of the first even-mode of the current singularities in the experimental observations.
遞歸多項式零點之分布區域
(交大學刊編輯委員會, 1978-04)
倪維城
;
W.C.Ni
This paper primarily investigates on the distribution of zeros of polynomials under certain conditions.The idea is to transform such a problem of zero into a problem of eigenvalues of some related matrix, and apply the Gerschgorin theorem or its generalization to produce upper bounds for the zeros concerned.
四季
(1978-04-25)
管管
賀飛越汽車結婚
(1978-04-30)
管管
喜怒哀樂
(1978-05-10)
管管
喜怒哀樂
(1978-05-10)
管管
喜怒哀樂
(1978-05-10)
管管
喜怒哀樂
(1978-05-10)
管管
會說故事的手
(1978-05-25)
管管
相關不良品檢驗對生產管制影響的推廣
(交大學刊編輯委員會, 1978-07)
黃俊雄
;
楊照崑
;
J.S.Huang
;
M.C.K.Yang
A production process with two quality levels and four states is presented.A sequence (k) sampling plan in which samples of k(k>0) consecutively produced items are taken periodically,and a simple decision rule based on the result of inspecting each sample are applied to control the process. It is assumed that each item has two correlated attributes X and Y. In practice, the cost of inspection of X is higher than the cost of inspection of Y and the result of inspectig X determines the item is good (acceptable) or bad (unacceptable).The problem of whether to use the inspection of X or Y is studied and some approximation results are obtained to compare the two inspection costs corresponding to X and Y.