130 resultados para Software Defined Networking SDN OpenFlow Rete Switch Router


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The purpose of this research is to describe how the scope of internationalization affects partner management in software companies. The effects are analyzed separately for small and large companies. Partner management is described from three perspectives: who should manage partnerships, how they should be managed and how does the context affect the choice of management style. Inductive case study is selected as research design. Eventually four case companies are chosen. The findings reveal that the size of the company affects the volume whereas the scope of internationalization affects the choice of partner management activities. Companies with high scope of internationalization required a more formal yet flexible management system whereas companies with low scope of internationalization relied more on the informal relations and personal management.

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This thesis introduces a real-time simulation environment based on the multibody simulation approach. The environment consists of components that are used in conventional product development, including computer aided drawing, visualization, dynamic simulation and finite element software architecture, data transfer and haptics. These components are combined to perform as a coupled system on one platform. The environment is used to simulate mobile and industrial machines at different stages of a product life time. Consequently, the demands of the simulated scenarios vary. In this thesis, a real-time simulation environment based on the multibody approach is used to study a reel mechanism of a paper machine and a gantry crane. These case systems are used to demonstrate the usability of the real-time simulation environment for fault detection purposes and in the context of a training simulator. In order to describe the dynamical performance of a mobile or industrial machine, the nonlinear equations of motion must be defined. In this thesis, the dynamical behaviour of machines is modelled using the multibody simulation approach. A multibody system may consist of rigid and flexible bodies which are joined using kinematic joint constraints while force components are used to describe the actuators. The strength of multibody dynamics relies upon its ability to describe nonlinearities arising from wearing of the components, friction, large rotations or contact forces in a systematic manner. For this reason, the interfaces between subsystems such as mechanics, hydraulics and control systems of the mechatronic machine can be defined and analyzed in a straightforward manner.

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Software integration is a stage in a software development process to assemble separate components to produce a single product. It is important to manage the risks involved and being able to integrate smoothly, because software cannot be released without integrating it first. Furthermore, it has been shown that the integration and testing phase can make up 40 % of the overall project costs. These issues can be mitigated by using a software engineering practice called continuous integration. This thesis work presents how continuous integration is introduced to the author's employer organisation. This includes studying how the continuous integration process works and creating the technical basis to start using the process on future projects. The implemented system supports software written in C and C++ programming languages on Linux platform, but the general concepts can be applied to any programming language and platform by selecting the appropriate tools. The results demonstrate in detail what issues need to be solved when the process is acquired in a corporate environment. Additionally, they provide an implementation and process description suitable to the organisation. The results show that continuous integration can reduce the risks involved in a software process and increase the quality of the product as well.

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Large enterprises have for many years employed eBusiness solutions in order to improve their efficiency. Smaller companies, however, have not been able to leverage these technologies due to the high level of know-how and resources required in implementing them. To solve this, novel software services are being developed to facilitate eBusiness adoption for the small enterprise with the aim of making B2Bi feasible not only between large organisations but also between trading partners of all sizes. The objective of this study was to find what standards and techniques on eBusiness and software testing and quality assurance fit best for building these new kinds of software considering the requirements their unique eBusiness approach poses. The research was conducted as a literature study with focus on standards on software testing and quality assurance together with standards on eBusiness. The study showed that the current software testing and quality assurance standards do not possess such characteristics as would make select standards evidently better fitted for building this type of software, which were established to be best developed as web services in order for them to meet their requirements. A selection of eBusiness standards and technologies was proposed to support this approach. The main finding in the study was, however, that these kinds of web services that have high interoperability requirements will have to be able to carry out automated interoperability and conformance testing as part of their operation; this objective dictates how the software are built and how testing during software development is to be done. The study showed that research on automated interoperability and conformance testing for web services is still limited and more research is needed to make the building of highly-interoperable web services more feasible.

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Verkostotoiminta asettaa haasteita suunnittelutyölle, valmistukselle, hankintatoimelle ja laadunhallinnalle, jotka kaikki vaikuttavat kokoonpanon sujuvuuteen. Suunnittelun ja valmistuksen yhteistyö on entistäkin haasteellisempaa, kun osavalmistus toteutetaan erillisillä toimittajilla. Tämän diplomityön tavoitteena on selvittää The Switch Drive Systems Oy:n tuotteiden kokoonpantavuuden parantamisen mahdollisuuksia sekä toimia yrityksen kokoonpantavuuteen liittyvien toimintamallien kehittämisen perustana. Diplomityöstä on olemassa myös julkinen versio. Työ alkaa kirjallisuuskatsauksella, jossa kuvataan kokoonpanoystävällisyyttä ja kokoonpanoystävällistä toimintaa kattaen suunnittelun, osien ja osakokoonpanojen valmistamisen verkostotuotannossa sekä kokoonpanotyön. Toimittajayhteistyötä ja laadunhallintaa käsitellään näiden lukujen yhteydessä. Työn käytännön osuudessa kartoitetaan The Switchin tuotteiden ja yrityksen toimintatapojen kokoonpanoystävällisyyden parantamismahdollisuuksia. Tämä toteutettiin The Switchin henkilöstön sekä osakokoonpanojen ja osien toimittajien haastatteluilla, toiminnan tarkkailulla sekä piirustuksiin ja prosessikuvauksiin perehtymällä. Kokoonpantavuuden ja valmistettavuuden systemaattinen huomioiminen on kannattavaa suunnittelun alusta alkaen. Tässä tulee mm. hyödyntää sekä toimittajien että The Switchin kokoonpanossa olevaa tietoa ja kokemusta.

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Diplomityö tehtiin Wello Oy:n toimeksiannosta. Wello Oy on vesi- ja tuulivoimaratkaisuihin keskittynyt yritys, joka kehittää aaltovoimalaitekonseptia. Työssä selvitettiin aaltovoimaan liittyviä ilmiöitä ja aaltovoimalaitteen mekaanista konseptia ja tehtiin arvio niiden tehokkuudesta. Työssä käytettiin kaupallisia simulointityökaluja kuten monikappaledynamiikan simulointiohjelmaa MSC.ADAMS R3:a ja yleistä matematiikka ohjelmaa Matlab Simulink:ia. Simulointimallia käytettiin arvioimaan laitteen yleistä käyttäytymistä. Lisäksi laitteen analyyttisiä malleja käytettiin laitteen toimintaperiaatteen selvitykseen. Simulointia käytettiin kelluvan laitteen mekanismin tutkimukseen. Tuloksiin pohjautuen laitteelle määriteltiin teoreettiset maksimiteho rajat ja rajoitteet, jotka vaikuttavat laitteen tehokkuuteen.

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Tämän työn tavoitteena oli kehittää monitehdasympäristöön siirtyneen pk-yrityksen tuotannon tuotetiedonhallintaa. Hajautettu tuotanto ja verkostoituminen oli luonut uusia haasteita ja vaatimuksia tuotetiedonhallinnalle. Teoriaosassa selvitettiin mitä tuotannon tuotetiedoilla tarkoitetaan, mitä osa-alueita on hallittava sekä miten niitä voitaisiin hallita kansainvälisesti verkostoituneen yrityksen näkökulmasta. Näiden lisäksi kartoitettiin ja vertailtiin erilaisia kehittämisvaihtoehtoja. Teorioista luotiin itsearviointityökalu kohdeyrityksen tuotannon tuotetiedon nykytilan kuvausta ja –analyysia varten. Löydetyt kehittämistarpeet priorisoitiin ja valituille kehityskohteille pohdittiin ratkaisuehdotuksia kaksivaiheisen kehittämismallin mukaisesti.

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The front end of innovation is regarded as one of the most important steps in building new software products or services, and the most significant benefits in software development can be achieved through improvements in the front end activities. Problems in the front end phase have an impact on customer dissatisfaction with delivered software, and on the effectiveness of the entire software development process. When these processes are improved, the likelihood of delivering high quality software and business success increases. This thesis highlights the challenges and problems related to the early phases of software development, and provides new methods and tools for improving performance in the front end activities of software development. The theoretical framework of this study comprises two fields of research. The first section belongs to the field of innovation management, and especially to the management of the early phases of the innovation process, i.e. the front end of innovation. The second section of the framework is closely linked to the processes of software engineering, especially to the early phases of the software development process, i.e. the practice of requirements engineering. Thus, this study extends the theoretical knowledge and discloses the differences and similarities in these two fields of research. In addition, this study opens up a new strand for academic discussion by connecting these research directions. Several qualitative business research methodologies have been utilized in the individual publications to solve the research questions. The theoretical and managerial contribution of the study can be divided into three areas: 1) processes and concepts, 2) challenges and development needs, and 3) means and methods for the front end activities of software development. First, the study discloses the difference and similarities between the concepts of the front end of innovation and requirements engineering, and proposes a new framework for managing the front end of the software innovation process, bringing business and innovation perspectives into software development. Furthermore, the study discloses managerial perceptions of the similarities and differences in the concept of the front end of innovation between the software industry and the traditional industrial sector. Second, the study highlights the challenges and development needs in the front end phase of software development, especially challenges in communication, such as linguistic problems, ineffective communication channels, a communication gap between users/customers and software developers, and participation of multiple persons in software development. Third, the study proposes new group methods for improving the front end activities of software development, especially customer need assessment, and the elicitation of software requirements.

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This diploma thesis has been done to international organization which takes care from the accounting actions of two major companies. In this organization are used three different purchasing tools which are used when new asset master data is wanted to input to SAP R/3- system. The aim of this thesis is to find out how much changing the user interface of one of these three e-procurement programs will affect to overall efficiency in asset accounting. As an addition will be introduced project framework which can be used in future projects and which help to avoid certain steps in the development process. At the moment data needs to be inputted manually with many useless mouse clicks and data needs to be searched from many various resources which slow down the process. Other organization has better tools at the moment than the myOrders system which is under investigation Research was started by exploring the main improvement areas. After this possible defects were traced. Suggested improvements were thought by exploring literature which has been written from usability design and research. Meanwhile also directional calculations from the benefits of the project were done alongside with the analysis of the possible risks and threats. After this NSN IT approved the changes which they thought was acceptable. The next step was to program them into tool and test them before releasing to production environment. The calculations were made also from implemented improvements and compared them to planned ones From whole project was made a framework which can be utilized also to other similar projects. The complete calculation was not possible because of time schedule of the project. Important observation in the project was that efficiency is not improved not only by changing the GUI but also improving processes without any programming. Feedback from end user should be also listened more in development process. End-user is after all the one who knows the best how the program should look like.

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Yritysohjelmistojen kehittäminen on monesti aikataulukriittistä ja tuottavuusvaatimukset ovat korkeita. Työssä kehitettiin tyypillisen web-käyttöliittymän omaavan J2EE-sovelluksen koontiin soveltuva koontimenetelmä, joka hyödyntää XP:n (Extreme Programming) sovelluskehityskäytäntöjä. Tärkeimpiä näistä on automatisoitu testaus, jonka päätyypit ovat automatisoitu yksikkö- ja integrointitestaus. Työn aikana asetettiin tavoitteet koontimenetelmälle sekä evaluointiin ja valittiin markkinoilla olevista työkaluista toimeksiantajan ympäristöön sopiva joukko. Koontimenetelmän toteutuksen tarkastelussa havaittiin, että XP:n käytännöt soveltuvat J2EE-sovelluskehitykseen ja tarpeelliset työkalut tähän ovat olemassa.