The brand-related theories had been valued in recent year. Brand position has been viewed as the core of brand identity, and at the meantime of establishing brands of Taiwan corporations who neglected the importance of brand position. This thesis focused on Taiwan¡¦s mobile service industry and tried to analyze and discuss the ways of establishing brand position of TransAsia Telecommunications Inc. This thesis made the conclusions as followed: (1) Discovering the variable could be differentiated at brand analysis. (2) Choosing and prompting the target-position, which could differentiate itself from other brands¡¦. (3) Communicating the consistent tone of the brand and drawing the attention through being the subject of a talk. (4) The strategic turn of brand position after been merged. Through the discoveries of this thesis, hope it could give some suggestions of building the brand position for practice. Keywords: Brand Position, Brand Identity, TransAsia Telecommunications Inc.

The splitting-integrating method(SIM) is well suited to the inverse transformations of digital images and patterns in 2D, but it encounters some difficulties involving nonlinear solutions for the forward transformation. New techniques are explored in this thesis to bypass the nonlinear solution process completely, to save CPU time, and to be more flexible for general and complicated transformations T, such as the harmonic model which convert the original shape of images and patterns to other arbitrary shapes. In this thesis, the finite element method (FEM) are used to seek the approximate transformation of the harmonic model. The new methods of image transformation are applied to human face. To describe the face boundary, we use the method combining Lagrange polynomial and Hermite interpolation seeking for the corresponding grid points besides the fixed ones. The greyness of images under geometric transformations by the splitting-integrating method has the error bounds, O(H)+O(H/N^2) as using the piecewise bilinear interpolations (u =1), for smooth images, where H(<<1) is mesh resolution of an optical scanner, and N is the division number of a pixel split into N^2 sub-pixels. Furthermore, there often occur in practical applications the discontinuity images whose greyness jump is a minor portion of the entire image, e.g., the piecewise continuous images but with the interior and exterior boundary of greyness jumps, or the continuous pictures accompanied with a finite number of isolated pixels. For this kind of discontinuous images, the error bounds are also derived in this thesis to be $O(H^{eta})+O(H^{eta}/N^2), ~ eta in (0,1]$ as $mu =1$. The image greyness made before was always assumed to be smooth enough, this error analysis is significant for geometric image transformations.

Three robust tracking control design strategies are proposed in this dissertation for different classes of nonlinear MIMO dynamic systems with mismatched perturbations. The first controller design method is proposed for a class of nonlinear MIMO dynamic systems in canonical form. The second design procedure of controller is for the nonlinear MIMO dynamic systems without canonical form. A decentralized controller is presented in the last for perturbed large-scale systems with time-varying delay interconnections, where the knowledge of the exact function of time-delay is not required. These robust tracking controllers with a perturbation estimating scheme and an adaptive control mechanism embedded are designed by means of the variable structure control technique and Lyapunov stability theorem. The adaptive control mechanism is used to adapt the unknown upper-bound of perturbation estimation error, so that the knowledge of upper-bounds of perturbation as well as perturbation estimation error is not required. The chattering phenomenon is effectively alleviated, for the gain of the proposed controllers, which needs only to overcome the perturbation estimation error, is in general smaller than those of the traditional sliding mode controllers. Furthermore, the stability of the overall controlled systems is proved, and the desired tracking accuracy can be achieved by adjusting the design parameters of the proposed controller schemes. A numerical example for each controller's design is provided for demonstrating the feasibility of the proposed control schemes.

Abstract We use the non-binary coding ,elitist strategy, increasing mutation rate, extinction, and immigration strategy to improve the simple genetic algorithms in this study. We expect that the search technique can avoid falling into the local optimum due to the premature convergence, and purse the chance that finding the near-optimal parameters in the larger searching space could be obviously increased. The accelerometer is then taken as the feedback sensor for output measurement, and the designed actuator and the PID fuzzy logic controller (PIDFLC) is implemented to actively suppress the vibration of the supporting mechanism that is due to the excitation effect of the high-speed and precision positioning action of the linear motor. From the computer simulations and the experimental results, it is obvious that the near-optimal PIDFLC controller designed by modified genetic algorithms can improve the effect of the vibration suppression; the settling time is also decrease. For the vibration suppressions of high-speed precision positioning problems, the vibrating supporting mechanism can quickly be stabilized.

In this dissertation, the robust stability of uncertain continuous and discrete singularly perturbed systems with multiple time delays is investigated. Firstly, the asymptotic stability for a class of linear continuous singularly perturbed systems with multiple time delays is investigated. A simple estimate of an upper bound of singular perturbation parameter is proposed such that the original system is asymptotically stable for any . Moreover, a delay-dependent criterion, but -independent, is proposed to guarantee the asymptotic stability of the original system. Secondly, we consider the robust stability problem of uncertain continuous singularly perturbed systems with multiple time delays. Two delay-dependent criteria are proposed to guarantee the robust stability of a class of uncertain continuous multiple time-delay singularly perturbed systems subject to unstructured perturbations. Thirdly, the robust D-stability of nominally stable discrete uncertain systems with multiple time delays is considered. Finally, the robust stability of nominally stable uncertain discrete singularly perturbed systems with multiple time delays subject to unstructured and structured perturbations is investigated. Some criteria, delay-dependent or delay-independent, will be proposed to guarantee the robust stability of the uncertain discrete multiple time-delay singularly perturbed systems. The improvements of our results over those in recent literature are also illustrated if the comparisons are possible. Some numerical examples will also be provided to illustrate our main results.

Three high speed circuit schemes for a low supply voltage DRAM are presented in this thesis. First, a high drivability bootstrapped word line driver is proposed. We use one boosting circuit collocating an NMOS to serve as the pulling up device rather than a PMOS to increase the current driving ability of the output stage. When the driving loading is 512 memory cells with the supply voltage of 1.5V, the switching time of the proposed word line driver is 1.13ns faster than that of the conventional one, the switching speed of the word line is 31.1% improved. Second, a pulse-controlled overdriven sense amplifier (PCO-SA) is proposed. We can make use of the pulse width of a pulse generator to control the overdriven time of the sensing transistors thereby enlarging the VGS of the sensing transistors transiently and improving the sensing speed. The sensing speed of the PCO-SA is 4.4ns faster than that of conventional sense amplifier with the supply voltage of 1.5V, the sensing time is 34.1% improved. In addition, even if the supply voltage is decreased to 1.3V, the function of the PCO-SA still correctly, whereas conventional sense amplifier cannot. Third, a modified N&PMOS cross-coupled main amplifier is presented. We make the charging path of speedy circuit which has the ability of passing the full VDD voltage to the input of the second stage. By this way, the data read out speed of the modified main amplifier is 5.87ns faster than that of the conventional N&PMOS cross-coupled main amplifier, the data read out time is 30.4% improved. Finally, three proposed circuits in this thesis are integrated and examined in a 1-Kbit DRAM test circuit. The simulated RAS access time of 28.9ns is achieved with the supply voltage of 1.5V, the RAS access time is 16% improved. These also indicate that the proposed circuit schemes are suitable for application in a low supply voltage DRAM.

A rail-to-rail op-amp with high stability over temperature variation at 1-V supply voltage is presented in this thesis. It incorporates a modified CM adapter and a modified bandgap reference. First, the modified CM adapter utilizes a level-shifting technique to shift the input common mode voltage of 0-1 V to the level below 0.1 V. By introducing this circuit as the front-end block of the proposed op-amp, the PMOS differential input stage can be operated appropriately with the rail-to-rail input common mode range. Second, the modified bandgap reference that combines two voltages with opposite temperature coefficients generates a temperature-insensitive bias current to the input stage. Besides, by the technique of cascading a diode with an additional BJT, the junction area of the original diodes can be reduced and in the actual application, fewer parallel-connected BJTs are needed. The two circuits are applied to the proposed op-amp operated at 1-V supply voltage in TSMC 1P4M 0.35£gm CMOS technology. At 25¢J, the dc gain is 78.9 dB and unity-gain bandwidth is 3.73 MHz. The phase margin is 42.9¢X. For the temperature from 0¢J to 75¢J, the frequency response is temperature-insensitive and the dc gain variation is 2dB. The layout view of the proposed op-amp is also presented and the area is 0.2 mm2.

In the ¡Krst chapter, separation of variables is used to derive the explicit particular solutions for a class of singularly perturbed di&#x00A4;erential equations with constant coe&#x00A2; cients on a rectangular domain. Although only the Dirichlet boundary condition is taken into account; it can be similarly extended to other boundary conditions. Based on these results, the behavior of the solutions and their derivatives can be easily illustrated. Moreover, we have proposed a model with exact solution, which can be used to explore the behavior of layer and to test numerical methods. Hence, these analytic solutions are very important to the study in this ¡Keld. In the second chapter, we study the model of Shi&#x00A4; et al. [20]. It is a biharmonic equation on the rectangular domain [&#x00A1; a; a]&#x00A3; [0; b] with clamped boundary condition. We compute its most accurate numerical solution by boundary approximation method (BAM), which is a special version of spectral method or collocation method. Its convergence unfortunately is not as good as the usual spectral method with exponential decay rate. We discover that the slowdown is due to the very mild singularity at two corners not considered by BAM. We further simplify the basis functions and their partial derivatives. Using these functions we can construct several models useful for testing numerical methods. We also explore how the stress intensity factor depends on the sizes of domain a and b, and the load &#x00B8; by reducing the original problem with three parameters lambda, a, b to that with only one parameter t.

In this thesis, we study the array theory and the array synthesis methods to design a sector antenna composed of a broadside collinear array and a corner reflector that is suitable for base stations. The antenna produces a sector beam in the horizontal plane to reduce the co-channel interference. In the elevation plane the antenna produces a narrower beam in order to achieve a higher gain. A uniform array is known to produce a high side lobe level which will cause serious interference. Therefore, Dolph-Tchebyscheff linear array method and Taylor line source method are utilized for the antenna design. We also design the structure of corner reflector which is combined with an array to form the sector antenna. We also study the switched-beam system, design and fabricate a 4¡Ñ1 microstrip patch antenna array to simulate the operation of the system and measure its performance.

ABSTRACT Seven air quality basins are classified in Taiwan according to landforms¡Bweather conditions and atmosphere diffusion. The data showed that the percentages of fractional number of days that PSI is greater than 100 (unhealthful) are 11.4%, 10.5% and 15.3% in three parts of Southern Taiwan (including Kaohsiung City, Kaohsiung County and Pintung County) in the years of 1999, 2000and 2001. For Kao-Ping area alone, the percentages of unhealthful days are, 12.1% , 10.7%and 8.2% in recent three years. The air pollutants in ambient air in Kao-Ping area are particulate matter (PM10) and ozone (O3). Particulate matter (PM10) is a primary pollutant and derivative aerosol, the mainly were factory stack¡Bmobile vehicles¡Bconstruction site and emission the surface of the earth. O3 is a secondary pollutant that is generated by its precursors such as hydrocarbons (HC) and nitrogen oxides (NOx) through complex photo-chemical reactions. Accordingly, attention has been shifted to the source and control of ozone in recently years in southern part of Taiwan, instead of PM10 alone. In order to improve the air quality, the deteriorated reason and pollution condition must be understood. The purpose of this proposal is thus to identify the O3 trend variation and weather pattern and mixing height. This proposal contains two parts: Collect the meteorological data (including pressure¡Btemperature¡Bwind velocity¡Bwind direction¡Bhumidity and sunshine time) and air quality data. Then we analyze the relationship between meteorological factors and air quality. Analyze the high O3 episodes based on the characteristics of hourly¡Bmonthly and seasonally data and to investigate the effects of mixing height and Ventilation index on air quality in Kao-Ping area.