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Now showing items 21-40 of 23278
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Text, image, graphics editor
(Bilkent University, 1988)The editor proposed in this study can manipulate textual, graphics and image data in a unified way. Each data type can be edited individually or dependencies can be set up between various data items so that modifying one ... -
Message passing in an object-oriented database management system
(Bilkent University, 1988)In this thesis, a focused survey on object-oriented database management systems and on object-orientation in general was carried out and a single- user object-oriented database management system prototype was designed and ... -
An Object memory for an object-oriented database management system
(Bilkent University, 1988)Object-oriented paradigm is an approach that can be applied in various areas of computing. In this approach, each entity is represented by an object which captures the state and the behaviour of the entity. In this thesis, ... -
Congestion control in interconnected computer networks
(Bilkent University, 1988)A computer network has a collection of resources shared by multiple users. The capacity of the resources is limited, and if the user demands exceed the capacity, the network becomes ’congested’. The congestion causes a ... -
Design and implementation of a tool for teaching programming
(Bilkent University, 1988)In this thesis, a survey on computer applications for teaching programming and some graphical programming tools together with their underlying environments has been carried out and a graphical Pascal teaching tool ... -
Stabilization of multivariable systems with constrained control structure
(Bilkent University, 1988)The following problem is considered: Given a multivariable system with m inputs and r outputs and an m x r matrix whose nonnegative (i,j)’th element represents the cost of setting up a feedback link from the j ’th output ... -
Steps to building a target market model for a new university
(Bilkent University, 1988)In order to form a segmentation base for Bilkent University, and position accordingly, a model is developed which relates student performances at Bilkent University to their socio-economic and educational backgrounds. ... -
Organizational structure and change: A Case study of the warehouse and stock control system in Tepe Co
(Bilkent University, 1988)A sophisticated information processing system can cause a change in the organizational structure. In this work, the Warehouse and Stock Control System in TEPE CO. is chosen as a case study to examine a planned organizational ... -
Design and analysis of just-in-time production systems
(Bilkent University, 1988)Just-in-Time (JIT) production systems have initially appeared in the Japanese manufacturing environment due to the scarcity of their critical resources. The main aim in JIT production systems is to eliminate waste. ... -
Electronic structure of Si/Ge semiconductor superlattices
(Bilkent University, 1988)A brief review about the two dimensional electron systems and especially band offsets is given. The electronic properties of the Si„/Ge„(001) strained superlattices as a function of the superlattice periodicity and the ... -
Atomic theory of the scanning tunneling microscope
(Bilkent University, 1988)The Scanning Tunneling Microscope is proven to be one of the most powerful tools for surface structure determination. Present theories are able to explain the operation of the microscope when the tip is far from the ... -
A fast method of calculating diffraction loss between two facing transducers
(IEEE, 1988)A fast method of calculating the diffraction loss between two facing circular ultrasonic transducers of unequal size is presented. This problem is directly applicable for minimization of diffraction loss in acoustic lens ... -
Measurement of sensitivity of different wave modes to subsurface defects
(IEEE, 1988)Excitation of acoustic wave modes in a layered solid is investigated when the solid is immersed in a liquid. This is done by computing the reflection coefficient of acoustic plane waves at the liquid-layered-solid interface. ... -
Efficiency calibration and summation effects in gamma-ray spectrometry
(Kluwer Academic Publishers, 1988)Precise, absolute γ-ray efficiences (∈γ) and total efficiences (∈T), have been measured at various distances from the detector, using a set of standards. The observed linear variation of ∈γ and ∈T as well as ∈γ/∈T with Eγ ... -
Critical relaxation of the two-dimensional three-state Potts model with conserved dynamics
(Institute of Physics (Great Britain), 1988)The dynamical critical exponent z is obtained using the finite-size scaling method for the two-dimensional three-state Potts model with conserved dynamics. It is observed that there is a change in the dynamical behaviour ... -
Tip induced localized states in scanning tunneling microscopy
(Institute of Physics Publishing Ltd., 1988)We have investigated the Scanning Tunneling Microscopy (STM) of graphite with varying tip-to-surface distance. Using an LCAO type approach we showed that at small separations states are localized between the tip and the ... -
Effect of tip profile on atomic-force microscope images: a model study
(American Physical Society, 1988)Adopting the empirical silicon interatomic potential of Stillinger and Weber, we investigate the effect of the tip profile on the atomic-force microscope images for a prototype system, Si(001)-(2×1), and conclude that the ... -
Calculations of STM linescans-general formalism
(Pergamon Press, 1988)We have developed a formalism for calculating the line scans of the scanning-tunneling microscopy from the realistic substrate and tip wave functions. The tip wave functions are calculated self-consistently by using a ... -
A transportation type aggregate production model with bounds on inventory and backordering
(Elsevier, 1988)We consider a certain T period aggregate production planning model, where the two sources of production are regular and overtime. The model allows for time varying production, holding and backordering costs and includes ... -
An algorithmic proof of the polyhedral decomposition theorem
(John Wiley & Sons, 1988)It is well‐known that any point in a convex polyhedron P can be written as the sum of a convex combination of extreme points of P and a non‐negative linear combination of extreme rays of P. Grötschel, Lovász, and Schrijver ...
