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Search Results: 1 - 10 of 84417 matches for " W. Torbacki "
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SaaS – direction of technology development in ERP/MRP systems
W. Torbacki
Archives of Materials Science and Engineering , 2008,
Abstract: Purpose: The main issue of this paper is present modern SaaS technology (Software as a Service) used in ERP/MRP class systems designated for production companies from different SME lines.Design/methodology/approach: The paper presents assumptions and aims of implementation of SaaSsystems on a background of classic computing system licences designated for company management.Findings: A present state of SaaS software development produced for manufacturing and enterprise resourceplanning as well as expected development directions of this technology in systems prepared for SME sector wereintroduced in this paper.Research limitations/implications: Further researches should be concentrated on particularizing specificity ofrequirements of production companies which want to change to outsourcing in systems working with SaaS mode.Practical implications: The paper presents a set of parameters which should be considered during a process ofchoosing one of ERP/MRP computing rank systems in SaaS technology for manufacturing company service.Originality/value: The paper might be useful for person dealing with modern technologies in ERP/MRP rank systems.
Numerical analysis of beams on unilateral elastic foundation
W. Torbacki
Archives of Materials Science and Engineering , 2008,
Abstract: Purpose: The main issue of this paper is to present results of finite element analysis of beams elements onunilateral elastic foundation received with a use of special finite elements of zero thickness designated forfoundation modelling.Design/methodology/approach: Computer strength analysis with a use of Finite Element Method (FEM)was carried out.Findings: The paper presents possibilities of special finite elements of zero thickness which enable takinginto consideration unilateral contact in construction-foundation interaction as well as an impact of surroundingconstruction environment to its behaviour.Research limitations/implications: Further researches should concentrate on taking into consideration amulti-layer aspects as well as elasto-plasticity of foundation.Practical implications: Modern engineering construction on elastic foundation analyze require not onlystandard analysis on Winkler (one parameter) foundation but also calculation of construction on two-parameterfoundation which will take into consideration a possibility of loosing contact between construction and foundation(unilateral contact).Originality/value: The paper can be useful for person who performs strength analysis of beams on elasticfoundation with a use of finite element method.
E-learning for manufacturing enterprises and universities based on ISOF Academy
W. Torbacki
Journal of Achievements in Materials and Manufacturing Engineering , 2007,
Abstract: Purpose: The main issue of this paper is to present digital courses. They are part of a ISOF Academy programme which is dedicated to both technical and economical university students and employees hired in various companies including manufacturing companies.Design/methodology/approach: Within this paper a diagram of tasks and problems occurring in a real companies was presented. Students solve this in an attractive form of virtual company with the use of digital teaching aids.Findings: The paper introduces advantages and benefits achieved by applying digital exercise platform in a process of educating students. It presents also a set of functional abilities which knowledge is necessary for students for a proper maintenance of ERP/MRP systems.Research limitations/implications: Further research should be concentrated on increasing efficiency and attractivity of digital trainings which are part of presented program.Practical implications: The paper introduces contents and characteristic features of existing digital exercise platform designated for universities and companies. The platform is based on a Moodle packet and meant for assisting in an education process ERP/MRP rank computer system working in a ASP mode.Originality/value: This paper can be useful for those who works with remote teaching methods including e-learning. It can also be helpful for students and company employees interested in modern business technologies in ERP/MRP rank systems.
Numerical strength and fatigue analysis in application to hydraulic cylinders
W. Torbacki
Journal of Achievements in Materials and Manufacturing Engineering , 2007,
Abstract: Purpose: The main issue of this paper is to present results of strength and fatigue limit analysis applied to piston type hydraulic cylinders. It will also shows advantages of application of the up-to-date digital chain of engineering analysis within which CAD tools are being used as well as strength and fatigue limit analysis.Design/methodology/approach: Computer analysis of the strength analysis by using Finite Element Method (FEM) and fatigue life analysis by using Fatigue Life Prediction Method (FLP) were carried out.Findings: The most strenuous and at the same time opened to a damage risk cylinder zones were localized. Two construction solution possibilities of fixing the tongue stub with a hydraulic cylinder jacket were analysed. Finally W hler fatigue graphs for a different values of operating average pressure and stress concentration factor were presented.Research limitations/implications: Further researches should concentrate on modifications and analysis which will help to recognize the best possible zones of fixing a tongue stub with a hydraulic cylinder jacket in order to find the best configuration of construction kinematic pair.Practical implications: Modern engineering construction analyze require not only standard strength analysis but also calculation of fatigue life.Originality/value: The paper can be useful for person who performs strength analysis with a use of finite element method but has never used digital fatigue life analysis method. It might be also useful for a person interested in recognizing of both methods.
BSC methodology for determining strategy of manufacturing enterprises of SME sector
M. Torbacka,W. Torbacki
Journal of Achievements in Materials and Manufacturing Engineering , 2007,
Abstract: Purpose: The main issue of this paper is to present a modern way of determining business strategy with a use of Balanced Scorecard methodology (BSC) integrated with ERP/MRP rank systems for managing manufacturing companies.Design/methodology/approach: The paper presents assumptions, aims and ways of implementation of Balanced Scorecard on a background of classic manufacturing company management.Findings: A present state of software development produced for strategic company management as well as proposals of ways and directions of its development for SME sector was introduced in this paper.Research limitations/implications: Further researches should be concentrated on particularising of so-called scorecard of manufacturing company.Practical implications: The paper presents an example of a needs analyse which is necessary to be performed during a process of choosing one of ERP/MRP rank computer system for manufacturing company service.Originality/value: The paper might be useful for person dealing with modern techniques of manufacturing company management.
. W.
Nieuwe West-Indische Gids , 1951,
Creation of High Energy/Intensity Bremsstrahlung by a Multi-Target and Focusing of the Scattered Electrons by Small-Angle Backscatter at a Cone Wall and a Magnetic Field—Enhancement of the Outcome of Linear Accelerators in Radiotherapy  [PDF]
W. Ulmer
International Journal of Medical Physics,Clinical Engineering and Radiation Oncology (IJMPCERO) , 2013, DOI: 10.4236/ijmpcero.2013.24020
Abstract: The yield of bremsstrahlung (BS) from collisions of fast electrons (energy at least 6 MeV) with a Tungsten target can be significantly improved by exploitation of Tungsten wall scatter in a multi-layered target. A simplified version of a previously developed principle is also able to focus on small angle scattered electrons by a Tungsten wall. It is necessary that the thickness of each Tungsten layer does not exceed 0.04 mm—a thickness of 0.03 mm is suitable for accelerators in medical physics. Further focusing of electrons results from suitable magnetic fields with field strength between 0.5 Tesla and 1.2 Tesla (if the cone with multi-layered targets is rather narrow). Linear accelerators in radiation therapy only need to be focused by wall scatter without further magnetic fields (a standard case: 31 plates with 0.03 mm thickness and 1 mm distance between the plates). We considered three cases with importance in medical physics: A very small cone with an additional magnetic field for focusing (the field diameter at 90 cm depth: 6 cm), a medium cone with an optional magnetic field (field diameter at 90 cm depth: 13 cm) and a broad cone without a magnetic field (
Social Issues of Urban Road Rehabilitation  [PDF]
W. Supul
Current Urban Studies (CUS) , 2018, DOI: 10.4236/cus.2018.63022
This study highlights the social issues of an urban road confronted after the recent rehabilitation works. The study reveals that the road has facilitated faster travel with rider comfort but does not provide a very safe place for residents, children of the kindergarten and school and, walkers. The study has identified several social impacts caused by rehabilitation such as walker and resident un-comfort, inconvenience for businesses, not abating environmental pollution, absence of facilities for disable people and several more. Because the road platform is devoid of trees, the motorists, residents and pedestrians are stripped off of an array of benefits. Nor the road design has considered the comfort of walkers especially disable, elderly, sick and children by not providing a fully connected road walkway and not providing any tree shade and benches to have a rest on a hot and sunny day. The road has also not addressed environmental concerns especially the mechanisms for reduction of impacts of particle and other noxious gases emanating from motor vehicle movement on inhabitants. A method to analyze road impacts is included that serves as an aid for future rehabilitation of urban roads.
On the Origin of Mass and Angular Momentum of Stellar Objects  [PDF]
Peter C. W. Fung, K. W. Wong
Journal of Modern Physics (JMP) , 2015, DOI: 10.4236/jmp.2015.615235
Abstract: The consequence of the 5D projection theory [1] is extended beyond the Gell-Mann Standard Model for hadrons to cover astronomical objects and galaxies. The proof of Poincare conjecture by Pe-relman’s differential geometrical techniques led us to the consequence that charged massless spinors reside in a 5D void of a galactic core, represented by either an open 5D core or a closed, time frozen, 3D × 1D space structure, embedded in massive structural stellar objects such as stars and planets. The open galactic core is obtained from Ricci Flow mapping. There exist in phase, in plane rotating massless spinors within these void cores, and are responsible for 1) the outward spiral motion of stars in the galaxy in the open core, and 2) self rotations of the massive stellar objects. It is noted that another set of eigen states pertaining to the massless charged spinor pairs rotating out of phase in 1D (out of the 5D manifold) also exist and will generate a relatively weak magnetic field out of the void core. For stars and planets, it forms the intrinsic dipole field. Due to the existence of a homogeneous 5D manifold from which we believe the universe evolves, the angular momentum arising from the rotation of the in-phase spinor pairs is proposed to be counter-balanced by the rotation of the matter in the surrounding Lorentz domain, so as to conserve net zero angular momentum. Explicit expression for this total angular momentum in terms of a number of convergent series is derived for the totally enclosed void case/core, forming in general the structure of a star or a planet. It is shown that the variables/parameters in the Lorentz space-time domain for these stellar objects involve the object’s mass M, the object’s Radius R, period of rotation P, and the 5D void radius Ro, together with the Fermi energy Ef and temperature T of the massless charged spinors residing in the void. We discovered three laws governing the relationships between Ro/R, T, Ef and the angular momentum Iω of such astronomical object of interest, from which we established two distinct regions, which we define as the First and Second Laws for the evolution of the stellar object. The Fermi energy Ef was found to be that of the electron mass, as it is the lightest massive elementary particle that could be created from pure energy in the core. In fact the mid-temperature of the transition region between the
Biopesticides and Their Role in Sustainable Agricultural Production  [PDF]
Geraldin M. W. Lengai, James W. Muthomi
Journal of Biosciences and Medicines (JBM) , 2018, DOI: 10.4236/jbm.2018.66002
Abstract: Biopesticides are derivatives of plants, microorganisms and insects. Substances from plants and animals have been used to manage diseases in crops, animals and humans. Reliance on nature to heal nature is a practise for many people around the world. Use of natural products was overtaken by synthetic chemicals due to their efficacy, reliability and quick knock down effect. However, synthetic pesticides have become a health hazards for humans and environment due to their toxicity and pollution. Biopesticides are potential alternatives to synthetic pesticides. Sources of biopesticides are readily available, easily biodegradable, exhibit various modes of action, are less expensive and have low toxicity to humans and non-target organisms. Neem, pyrethrum, cotton and tobacco are known sources of botanical pesticides and have already been commercialized. Other sources of botanical pesticides include garlic, euphorbia, citrus, pepper among others. Species of Trichoderma, Bacillus, Pseudomonas, Beauveria have been commercialized as microbial pesticides. Biopesticides are however faced with challenges of formulation, registration, commercialization, acceptance and adoption. This paper describes several aspects of biopesticide development, including but not limited to, their sources, production, formulation, commercialization, efficacy and role in sustainable agriculture.
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