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1.
POSODOBITEV SISTEMA REGISTRACIJE DELOVNEGA ČASA V CINKARNI CELJE
Andrej Vrečko, 2010, diplomsko delo

Opis: V diplomskem delu smo najprej predstavili pojem registracija delovnega časa. Poudarili smo za kaj je potrebna v podjetju in kako lahko pripomore, k boljšemu poslovanju in znižanju stroškov. Sledi poglavje, v katerem smo predstavili delovanje sistemov za registracijo delovnega časa. Predstavili smo komponente strojnega in programskega dela sistema. Opisali smo tudi načine registriranja zaposlenih na registracijskih konzolah, kot na primer, registriranje s pomočjo biometričnih čitalcev. V nadaljevanju smo prestavili sistem registracije delovnega časa Kronos, ki ga uporabljajo v Cinkarni Celje d. d., kot prvi računalniško podprt sistem za registracijo delovnega časa. Opisali smo komponente, ki so sestavni deli sistema Kronos in izpostavili glavne razloge, ki onemogočajo nemoteno oziroma stabilno delovanje sistema. V nadaljevanju smo predstavili ponudnika sistemov za registracijo delovnega časa v Sloveniji, Špica Internacional, d. o. o. Opisali smo sistem za registracijo delovnega časa, ki ga to podjetje trži pod imenom Time & Space. Opisali smo katere komponente strojnega dela sistema bi bile primerne za implementacijo v podjetju Cinkarna Celje, d. d. in programski paket, ki vsebuje funkcije za uspešno obdelavo in zajem podatkov. Implementacijo sistema smo nakazali s slikovnim gradivom in opisom faz vgradnje strojne ter programske opreme. Prvo fazo smo namenili za ogled lokacije ter namestitev strojnih delov sistema. V drugi fazi smo sistem omrežili in implementirali programsko opremo. V zadnji fazi pa smo testirali sistem v ekstremnimi scenariji, da smo ugotovili, če je odzivnost sistema zadovoljiva.
Ključne besede: registracija delovnega časa, registracijske konzole, Kronos, identifikacija, Time & Space.
Objavljeno: 20.08.2010; Ogledov: 1886; Prenosov: 247
.pdf Celotno besedilo (1,24 MB)

2.
Product development simulation with multicriteria analysis
Tomaž Kostanjevec, Andrej Polajnar, Metka Kostanjevec, 2009, izvirni znanstveni članek

Opis: Effective product development rests on a productćs design ability to create a positive product experience. This involves complex transformation of product information from customers to engineers to production to sales and back to customers. This work presents the concept of simulating the development of a new product. The multicriteria analysis of product development in a multi-dimensional space is being used. Based on simulation, the model shows in which direction the product will be developed on the basis of existing information. In the set multi-dimensional space, in which each observation parameter has a designated polar dimensional in terms of dependence on time, development on the basis of selected products is simulated. In an innovative way and in the case of sanitary fittings, simulation of the development of a new product in the early stages of design ideas is shown.
Ključne besede: product development, simulation, multicriteria analysis, multidimensional space
Objavljeno: 31.05.2012; Ogledov: 1177; Prenosov: 39
URL Povezava na celotno besedilo

3.
Evaluation of Green`s function for vertical point-load excitation applied to the surface of a semi-infinite elastic medium
Andrej Štrukelj, Tomaž Pliberšek, Andrej Umek, 2006, izvirni znanstveni članek

Opis: The topic of this paper is to show that the integrals of infinite extent representing the surface displacements of a layered half-space loaded by a harmonic, vertical point load can be reduced to integrals with finite integration range. The displacements are first expressed through wave potentials and the Hankel integral transform in the radial coordinate is applied to the governing equations and boundary conditions, leading to the solutions in the transformed domain. After the application of the inverse Hankel transform it is shown that the inversion integrands are symmetric/antimetric in the transformation parameter and that this characteristic is preserved for any number of layers. Based on this fact the infinite inversion integrals are reduced to integrals with finite range by choosing the suitable representation of the Bessel function and use of the fundamental rules of contour integration, permitting simpler analytical or numerical evaluation. A numerical example is presented and the results are compared to those obtained by the CLASSI program.
Ključne besede: civil engineering, soil mechanics, Green`s function, layered half-space, vertical point load
Objavljeno: 31.05.2012; Ogledov: 1384; Prenosov: 7
URL Povezava na celotno besedilo

4.
5.
On Euclidean algebra of hermitian operators on a quadratic Hilbert space
Rok Strašek, 2006, izvirni znanstveni članek

Opis: We solve the problem of finding the best possible constant of ultraprimeness for the special class of Euclidean algebra called algebra of hermitian operators on a quaternionic Hilbert space. More precisely, we prove that for algebra of hermitian operators, equipped with spectral norm, the best possibleconstant of ultraprimeness is 1/2.
Ključne besede: mathematics, Euclidean algebras, quaternionic Hilbert space, ultraprime algebras, Jacobson-McCrimmon operator, spectral norm
Objavljeno: 30.05.2012; Ogledov: 890; Prenosov: 17
URL Povezava na celotno besedilo

6.
Product development through multi-criteria analysis
Tomaž Kostanjevec, Andrej Polajnar, Andrej Sarjaš, 2008, izvirni znanstveni članek

Opis: The trend regarding the development of sanitary fittings is forecasted by the use of a developed model of multi-criteria analysis. In this analysis a multi-dimensional space is used, which enables the establishment of a time argument in comparison to product parameters. The establishment of product parameters is achieved by means of internal company information and market needs. In this way it is possible to establish an innovative environment for the development of new products. This paper indicates various ways of dealing with product development, on the basis of which the method of multi-criteria analysis for establishing future trends in product development is acquired.
Ključne besede: sanitary fittings, product development, multi criteria analysis, multi-dimensional space
Objavljeno: 31.05.2012; Ogledov: 1301; Prenosov: 26
URL Povezava na celotno besedilo

7.
8.
Approximate expressions for the Green's functions of a semi-infinite, elastic medium
Tomaž Pliberšek, Andrej Umek, 2010, izvirni znanstveni članek

Opis: On the basis of an exact, discretized presentation of the Green's function components, their closed-form approximations are developed. Their accuracy is considered to be better than the tolerances in the intrusive measurements data for the identification of the mechanical characteristics of soils. The use of these approximate expressions is believed to considerably reduce the computational effort in soil-structure interaction problems and open up new possibilities for the non-intrusive identification of soils.
Ključne besede: elastodynamics, half-space, Green's function, approximate solutions
Objavljeno: 31.05.2012; Ogledov: 1238; Prenosov: 63
.pdf Celotno besedilo (220,92 KB)
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9.
Optimal reactor systems for Van de Vusse reaction scheme with multicomponent feed
Duško Bikić, Branko Butinar, Peter Glavič, 2002, izvirni znanstveni članek

Opis: In the present paper, product yield in the Van de Vusse reaction scheme with multicomponent feed has been studied. The optimal reactor structures have been found by investigating optimality conditions. The optimum product yield and criteria for selecting an appropriate reaction system have been obtained as functions of kinetic parameters. On the basis of optimization results the parameter space has been classified into regions indicating optimum reactor structure.
Ključne besede: optimal reactor structure, optimum product yield, multicomponent feed, parameter space, Van der Vusse reaction
Objavljeno: 01.06.2012; Ogledov: 1387; Prenosov: 42
URL Povezava na celotno besedilo

10.
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