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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 ... 
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 ... 
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 ... 
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 ... 
An Upper Bound on the Cutoff Rate of Sequential Decoding
(1988)An upper bound is given on the cutoff rate of discrete memoryless channels. This upper bound, which coincides with a known lower bound, determines the cutoff rate, and settles a longstanding open problem. © 1988 IEEE 
Calculations of STM linescansgeneral formalism
(Pergamon Press, 1988)We have developed a formalism for calculating the line scans of the scanningtunneling microscopy from the realistic substrate and tip wave functions. The tip wave functions are calculated selfconsistently by using a ... 
A heuristic procedure for a singleitem dynamic lot sizing problem
(Pergamon Press, 1988)An O(T) heuristic proceudre for a singleitem dynamic lot sizing problem is introduced in this paper. The algorithm tries to establish the regeneration points of the problem whether either the production or the beginning ... 
DeltaDoping in strained (Si) / (Ge) superlattices
(American Physical Society, 1988)We present a comparative study of the pseudomorphic (Si)6/(Ge)6 and doped (Si)3(Sb)(Si)2/(Ge)6 superlattices using the selfconsistent pseudopotential method. The strained (Si)6/(Ge)6 superlattice has the lowest conductionband ... 
Effect of tip profile on atomicforce 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 atomicforce microscope images for a prototype system, Si(001)(2×1), and conclude that the ... 
An isomorphism theorem for Dragilev spaces
(BirkhäuserVerlag, 1988)Necessary and sufficient conditions for an Ly(a, l)space to be isomorphic to some Lg(b, m)space have been found. 
A simple animation package
(Pergamon Press, 1988)This paper discusses a simple animation package that animates sketches drawn by the user through a simple set of operations. The purpose of the animation package is to demonstrate various computer graphics principles to ... 
Critical relaxation of the twodimensional threestate Potts model with conserved dynamics
(Institute of Physics (Great Britain), 1988)The dynamical critical exponent z is obtained using the finitesize scaling method for the twodimensional threestate Potts model with conserved dynamics. It is observed that there is a change in the dynamical behaviour ... 
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 ... 
Sorption of cesium and strontium on montmorillonite and kaolinite
(De Gruyter Oldenbourg, 1988)Sorption characteristics of Cs+ and Sr++on montmorillonite and kaolinite type clays and soil fractions from various regions of Turkey were studied using the batch method. 137Cs and 90Sr were used as tracers. Concentrations ... 
Surface metallization of silicon by potassium adsorption on Si(001)(2×1)
(American Physical Society, 1988)We present the detailed results of selfconsistent and geometryoptimized totalenergy, bandstructure, and chargedensity calculations for a potassiumcovered Si(001)(2×1) surface, and for an unsupported potassium ... 
Sequential decoding for multiple access channels
(Institute of Electrical and Electronics Engineers, 1988)The use of sequential decoding in multiple access channels is considered. The Fano metric, which achieves all achievable rates in the oneuser case, fails to do so in the multiuser case. A new metric is introduced and an ... 
Electronic structure of strained Sin / Gen (001) superlattices
(Pergamon Press, 1988)Using the empirical tight binding method we have investigated the electronic properties of the Sin/Gen(001) strained superlattices as a function of the superlattice periodicity and the band misfit. For n ≥ 4 we have found ... 
Continuous processing of images through user sketched functional blocks
(WileyBlackwell, 1988)Our aim is to implement an image processing system with previously defined algorithms through the use of functional blocks connected together to form a diagram that we call a schematic. A functional block means the ... 
Efficiency calibration and summation effects in gammaray spectrometry
(Kluwer Academic Publishers, 1988)Precise, absolute γray 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 ... 
Continuous processing of images through user sketched functional blocks
(Bilkent University, 1988)An object oriented user interface is developed for interacting with and processing images. The software prepared for this purpose includes image processing functions as well as user friendly interaction tools both of a ...