DSpace Repository :: Browsing by Issue Date

Item

Thermal Effect on Output Power of He-Ne 6328Å Laser

(交大學刊編輯委員會, 1968-10)

黃振中

;

C.C.Huang

In operating He-Ne 6328Å laser with constant DC discharge power we can always find the output power increase for increasing of temperature of He-Ne mixed gas, decreases for decreasing of temperature of He-Ne mixed gas and a cut-off exists for a certain temperature. Keeping the temperature of He-Ne mixed gas remains constant, the output power of the laser will change only with different values of discharge power. As the discharge power increases, the output power first reaches a maximum than falls down and also attains a cut-off. It was discovered and originated by F.T. Arecchi in 1963 that the output power of a He-Ne laser is a function of temperature, discharge power and life times of transition levels. But his assumption："Electron density in active medium is proportional linearly with discharge power."is not applicable in the abnormal glow region of gas discharge where laser action always occurs. Hence the expressions derived by Arecchi must be modified. This paper presents a theory of modification of Arecchi's expressions together with an experimental justification.

Item

Micro-Wave Propagation in Magneto-Plasma

(交大學刊編輯委員會, 1968-10)

陳榮淦

;

孟光森

;

謝明憲

;

Y.G.Chen

;

K.S.Meng

Microwave plasma diagnostic technique based upon the interaction of plasma with low itensity microwave field have been the subject of extensive development in recent years. We intended to carry on a systematic study of the microwave plasma interaction here at the plasma laboratory, Chiao-Tung University. This is the first report of our study. In this article we shall be dealing with a quasi-transverse mode with propagation vector making 45° with respect to the confining magnetic field, while the electric field of the wave is perpendicular to both the D.C. magnetic field and the propagation vector. A short theoretical derivation of the imaginary part of the index of refraction which predominates the attenuation of the probing wave is given. A coputer plotting of the attenuation line shape as function of the confining magnetic field is given, and is found in good agreement to the observed result. The magnitude of the power attenuation is found also in good agreement.

Item

Zinc Dopping Effects on MOS Structure

(交大學刊編輯委員會, 1968-10)

張俊彥

;

曹貴有

;

C.Y.Chang

;

K.I.Tsao

It has been investigated that gold dopping into bulk of silicon can be used to controlling MOS transistor characteristics. However, zinc dopping into silicon , silicon dioxide as well as silicon dioxide- silicon interface has not yet been investigated.

Item

Stability Analysis of Nonlinear Reactor Control Systems

(交大學刊編輯委員會, 1968-10)

韓光渭

;

陳英亮

;

K.W.Han

;

Y.L.Chen

A method for testing control system stability is presented, which is useful ror finding the limit cycles of high order systems with multiple nonlinearities. The presented method is applied to the analysis of the control system of a material testing reactor, and a comparison with the method in a current literature is given.

Item

Study of Hall Effect

(交大學刊編輯委員會, 1968-10)

蔡增男

;

T.N.Tsai

If a conducting material is placed in a magnetic field perpendicular to the direction of current flow a voltage is developed across the material in a direction perpendicular to both the initial current direction and the magnetic field direction. This voltage is called the Hall voltage, after E.H. Hall who first observed the effect in 1879. The Hall voltage arises from the deflection of the moving charge carriers from their normal path by the applied magnetic field.

Item

An Extension of A Method For Solving The Equation x=ø(x)

(交大學刊編輯委員會, 1968-10)

張澤仁

;

朱潤祖

;

J.R.Chang

;

J.T.Chu

Item

On The Comparison of Imcompletely Specified Finite Automata Models

(交大學刊編輯委員會, 1968-10)

楊超植

;

C.C.Yang

Item

Matric Analysis of The Basic Uniformly Distributed R-C Networks

(交大學刊編輯委員會, 1968-10)

呂福釗

;

F.C.Lu

In this paper the distributed R-C network is discussed with emphasis on its matrix analysis and three different mathematical methods applying to infinitesimal section of a basic, uniformly distributed, R-C thin-film network are presented. The resultant matric forms are explicitly different. However, they can be found to be the same by putting some numerical check points into them.

Item

楊英風於日本大阪川崎製鐵西宮工廠拜訪奧國雕塑家卡普蘭（Mr. Karl Prantl）

(1969)

不詳

眾人參觀工廠，左三為楊英風，左四為Karl Prantl

Item

花蓮機場景觀規劃案（1969-1970）

(1969)

不詳

圖為〔魯閣長春〕中的石砌雕塑大理石。

Item

花蓮機場景觀規劃案（1969-1970）

(1969)

不詳

圖為航空站旁的石砌雕塑作品。

Item

花蓮機場景觀規劃案（1969-1970）

(1969)

不詳

花蓮機場航空站景觀規劃案中工人放置大理石過程。

Item

花蓮機場景觀規劃案（1969-1970）

(1969)

不詳

花蓮機場航空站景觀規劃案中站前〔魯閣長春〕水池施工過程。

Item

慈壽玉石

(1969)

楊英風

楊英風自停留於羅馬其間，耳目所見聞盡是優秀的大理石雕刻作品，於是漸漸對這種材料產生了興趣；返國後，1967年他被聘請為花蓮榮民大理石工廠的顧問，充分利用大理石場的廢料或銅料，開創出了所謂的「山水系列」。由於身處太魯閣群山間，鎮日聆賞山石的開闊、曲折、磅礡、雄奇，因此這段時期的作品，就如同中國山水畫中的山石，遍佈皴法紋理，渾然天成不落斧鑿之痕。「慈壽玉石」顯然脫胎於此般情境，石面中段刻有「慈壽」二字，左方有數行註記之文，整體觀之彷彿自然生成的奇山雅石。據聞這塊玉石為蔣經國於1969年在天祥附近找到的翠綠色台灣玉，得美石之後遂延請楊英風雕刻成「東西橫貫公路全景」浮雕，背面請秦孝儀題字隸書線刻貼金，玉石高約35cm，寬約45cm，厚約15cm，贈予蔣宋美齡女士作為生日禮物。