929 resultados para Hardware and software


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Integral abutment bridges are constructed without an expansion joint in the superstructure of the bridge; therefore, the bridge girders, deck, abutment diaphragms, and abutments are monolithically constructed. The abutment piles in an integral abutment bridge are vertically orientated, and they are embedded into the pile cap. When this type of a bridge experiences thermal expansion or contraction, horizontal displacements are induced at the top of the abutment piles. The flexibility of the abutment piles eliminates the need to provide an expansion joint at the inside face to the abutments: Integral abutment bridge construction has been used in Iowa and other states for many years. This research is evaluating the performance of integral abutment bridges by investigating thermally induced displacements, strains, and temperatures in two Iowa bridges. Each bridge has a skewed alignment, contains five prestressed concrete girders that support a 30-ft wide roadway for three spans, and involves a water crossing. The bridges will be monitored for about two years. For each bridge, an instrumentation package includes measurement devices and hardware and software support systems. The measurement devices are displacement transducers, strain gages, and thermocouples. The hardware and software systems include a data-logger; multiplexers; directline telephone service and computer terminal modem; direct-line electrical power; lap-top computer; and an assortment of computer programs for monitoring, transmitting, and management of the data. Instrumentation has been installed on a bridge located in Guthrie County, and similar instrumentation is currently being installed on a bridge located in Story County. Preliminary test results for the bridge located in Guthrie County have revealed that temperature changes of the bridge deck and girders induce both longitudinal and transverse displacements of the abutments and significant flexural strains in the abutment piles. For an average temperature range of 73° F for the superstructure concrete in the bridge located in Guthrie County, the change in the bridge length was about 1 118 in. and the maximum, strong-axis, flexural-strain range for one of the abutment piles was about 400 micro-strains, which corresponds to a stress range of about 11,600 psi.

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The presentation reflects on French and Italian case law that, in recent years, has dealt with free software from two different angles: public procurement and consumer protection against joint sales of hardware and software.

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This paper describes a simple low-cost approach toadding an element of haptic interaction within a virtualenvironment. Using off-the-shelf hardware and software wedescribe a simple setup that can be used to explore physically virtual objects in space. This setup comprises of a prototype glove with a number of vibrating actuators to provide the haptic feedback, a Kinect camera for the tracking of the user's hand and a virtual reality development environment. As proof of concept and to test the efficiency of the system as well as its potential applications, we developed a simple application where we created 4 different shapes within a virtual environment in order to try toexplore them and guess their shape through touch alone.

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BlueGiga Technologies on uusi Bluetooth -teknologiaa soveltava pk-yritys. Yrityksen tuotekehitysprosessia täydentämään tarvittiin testausprosessi. Testausprosessin luominen oli haastavaa, koska Bluetooth -teknologia on uutta ja yritys on vielä nuori. Lisäksi se integroi kovo- ja ohjelmistokomponentteja tuotteissaan. Testaus aloitettiin evaluoimalla standardinmukaista tapaa dokumentoida testit. Tämän jälkeen tutkittiin BlueGigan ohjelmistokehitysprosessin suhdetta olemassa oleviin ohjelmistokehitysprosesseihin. Samanaikaisesti perehdyttiin Bluetooth -kvalifikaation testaukselle asettamiin vaatimuksiin. Tämän seurauksena TTCN:ää kokeiltiin helppolukuisen testitapauksen määrittelyssä. Käyttötapauksiin perustuvan testauksen sopivuutta Wireless Remote Access Platform:in (WRAP) testaamiseen arvioitiin kokeilemalla sitä Man-to-Machine -käyttötapauksen testaamisessa. Yllämainittujen tehtävien aikana kerätyn tiedon ja hankittujen kokemusten pohjalta laadittiin testausprosessi, joka kattaa yksikkö-, integraatio- ja järjestelmätason testauksen. Painopiste on järjestelmätason testauksessa. Prosessi määrittelee myös vastuuhenkilön tai -henkilöt eri testaustasoille.

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Diplomityössä tutkittiin hydrauliikan reaaliaikasimulointia ja sen mahdollisuuksia tuotekehityksen apuvälineenä. Työssä käytettiin dSPACE:n reaaliaikasimulointiin valmistamia laitteita ja ohjelmia. Työssä luotiin Matlab/Simulink –ympäristöön tyypillisimmistä hydrauliikkakomponenttien puoliempiirisistä malleista koostuva komponenttikirjasto, joista kootut hydrauliikkapiirien mallit voitiin kääntää reaaliaikaympäristöön. Työn tavoitteena oli kehittää menetelmä, jonka avulla voidaan nopeuttaa ja helpottaa hydraulismekaanisten konejärjestelmien suunnittelua ja tuotekehitystä. Kehitetyt menetelmät perustuvat todellisen konejärjestelmän osaksi kytketyn reaaliaikaisen virtuaalihydrauliikan avulla laskettuun uuteen ohjaussignaaliin, jonka avulla voidaan todellisella hydrauliikalla kuvata virtuaalisen hydrauliikan vaikutukset todelliseen järjestelmään. Näin ollen muutokset voidaan siis tehdä virtuaaliseen hydrauliikkaan ja niiden vaikutukset nähdä todellisen järjestelmän käyttäytymisessä.

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Työn tavoitteena oli hankkia ja rakentaa kaupallisilla ohjelmistoilla ja laitteistoilla toteutettu reaaliaikasimulaattori. Työssä keskityttiin erityisesti valmiin Patu 655 puutavarakuormaimen simulointimallin visualisointiin reaaliaikasimulaattoriin hankitulla 3D-animointiohjelmalla. Lisäksi työssä selvitettiin reaaliaikasimuloinnin mahdollisuuksia konejärjestelmän tuotekehityksessä. Reaaliaikasimulaattorina käytettiin dSPACE:n reaaliaikasimulointiin valmistamia kaupallisia laitteita ja ohjelmia. Puutavarakuormaimen simulointimalli käännettiin simulaattorissa suoritettavaksi, jonka jälkeen mallin liikkeet visualisoitiin käyttämällä RealMotion 3D-animointiohjelmaa. Animoitu grafiikka tuotiin sekä AutoCAD- että ADAMS -ohjelmasta. Työn tuloksena saatiin hankittua reaaliaikasimulaattori, jonka havaittiin olevan toimiva kokonaisuus. Puutavarakuormaimen ja muiden simulointimallien automatisoitu kääntö simulaattoriin onnistui hyvin. Simulointimallien visualisointi toimi sujuvasti käytetyn 3D-animointiohjelman avulla. Konejärjestelmien tuotekehitysprosessia havaittiin voitavan nopeuttaa reaaliaikasimulaattorin avulla.

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Työssä oli tarkoituksena saada toteutettua kolmiulotteiseen visualisointiin soveltuva ohjelmisto mikrokokoluokkaa olevien kappaleiden konenäköjärjestelmään. Työssä jouduttiin myös jatkokehittämään menetelmää kolmiulotteisen kuvan hankkimiseksi yhdellä kameralla mikrokokoisesta kohteesta. Kohteen kolmiulotteisella kuvalla voitaisiin suorittaa automaattista järjestelmäohjausta. Työssä tutkittiin ja selvitettiin laitteistolla saavutettavia tarkkuuksia ja nopeuksia, sen soveltamiseksi esimerkiksi mikromanipulaattorin ohjaamiseen. Lisäksi tutkittiin erilaisia kohteita joissa voitaisiin hyödyntää kolmiulotteista visualisointia. Tällaisia kohteita on kappaleiden laadunvalvonnassa tai niiden tutkimisessa ja esittämisessä. Syvyystiedon keräävällä menetelmällä oli saavutettava riittävä nopeus, jotta sillä voitaisiin tarvittaessa ohjata reaaliaikaisesti toimilaitteita. Menetelmänä käytettiin "Depth from Focusing" -menetelmää, johon VTT:llä oli jo aiemmin kehitetty automaattinen fokusointiohjelmisto. Työn puitteissa suoritettiin laitteisto- ja menetelmäkehitystä järjestelmän nopeuttamiseksi. Visualisoinnin toteuttamisen eri mahdollisuuksia kartoitettiin ja sellainen toteutettiin rakennettuun konenäköjärjestelmään.

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Contexto Una central nuclear, al igual que cualquier otro tipo de central generadora de energía eléctrica, mediante turbinas de vapor, está basada en un proceso termodinámico. El rendimiento de las mismas es función del salto entálpico del vapor, para mejorarlo las centrales están constituidas por un ciclo compound formado por turbina de alta presión y turbinas de baja presión, y un ciclo regenerativo consistente en calentar el agua de alimentación antes de su introducción a los generadores de vapor. Un ciclo regenerativo está basado en etapas de calentadores o cambiadores de calor para aprovechar al máximo la energía térmica del vapor, este proyecto está basado en la mejora y optimización del proceso de control de estos para contribuir a mejorar el rendimiento de la central. Objetivo Implementar un sistema de control que nos permita modernizar los clásicos sistemas basados en controles locales y comunicaciones analógicas. Mejorar el rendimiento del ciclo regenerativo de la central, aprovechando las mejoras tecnológicas que ofrece el mercado, tanto en el hardware como en el software de los sistemas de instrumentación y control. Optimizar el rendimiento de los lazos de control de cada uno de los elementos del ciclo regenerativo mediante estrategias de control. Procedimiento Desarrollo de un sistema de control actualizado considerando, como premisa principal, la fiabilidad del sistema, el análisis de fallos y la jerarquización del riesgo. Análisis y cálculo de los lazos de control considerando las premisas establecidas. Configuración de los lazos mediante estrategias de control que nos permitan optimizar y minimizar los efectos del fallo. Para ello se han utilizado parámetros y datos extraídos de la Central Nuclear de Ascó. Conclusiones Se ha modernizado y optimizado el sistema de control mejorando el rendimiento del ciclo regenerativo. Se ha conseguido un sistema más fiable, reduciendo el riesgo del fallo y disminuyendo los efectos de los mismos. El coste de un proyecto de estas características es inferior al de un sistema convencional y ofrece más posibilidades. Es un sistema abierto que permite utilizar e interconectar equipos de diferentes fabricantes, lo que favorece tanto el mantenimiento como las posibles ampliaciones futuras del sistema.

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The extensional theory of arrays is one of the most important ones for applications of SAT Modulo Theories (SMT) to hardware and software verification. Here we present a new T-solver for arrays in the context of the DPLL(T) approach to SMT. The main characteristics of our solver are: (i) no translation of writes into reads is needed, (ii) there is no axiom instantiation, and (iii) the T-solver interacts with the Boolean engine by asking to split on equality literals between indices. As far as we know, this is the first accurate description of an array solver integrated in a state-of-the-art SMT solver and, unlike most state-of-the-art solvers, it is not based on a lazy instantiation of the array axioms. Moreover, it is very competitive in practice, specially on problems that require heavy reasoning on array literals

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Automation was introduced many years ago in several diagnostic disciplines such as chemistry, haematology and molecular biology. The first laboratory automation system for clinical bacteriology was released in 2006, and it rapidly proved its value by increasing productivity, allowing a continuous increase in sample volumes despite limited budgets and personnel shortages. Today, two major manufacturers, BD Kiestra and Copan, are commercializing partial or complete laboratory automation systems for bacteriology. The laboratory automation systems are rapidly evolving to provide improved hardware and software solutions to optimize laboratory efficiency. However, the complex parameters of the laboratory and automation systems must be considered to determine the best system for each given laboratory. We address several topics on laboratory automation that may help clinical bacteriologists to understand the particularities and operative modalities of the different systems. We present (a) a comparison of the engineering and technical features of the various elements composing the two different automated systems currently available, (b) the system workflows of partial and complete laboratory automation, which define the basis for laboratory reorganization required to optimize system efficiency, (c) the concept of digital imaging and telebacteriology, (d) the connectivity of laboratory automation to the laboratory information system, (e) the general advantages and disadvantages as well as the expected impacts provided by laboratory automation and (f) the laboratory data required to conduct a workflow assessment to determine the best configuration of an automated system for the laboratory activities and specificities.

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En els últims anys, la popularitat de les xarxes sensefils (WIFI) ha anat en augment a un ritme incansable. Des de petits aparells instal•lats a les cases amb aquesta tecnologia com a complement dels routers d’accés a internet instal•lats per diverses companyies, fins a empreses fent petits desplegaments per comunicar entre si les seves seus. Al marge d’aquests escenaris, s’ha produït un fenomen social d’acolliment d’aquesta tecnologia a nivell mundial, en forma del que coneixem com a xarxes ciutadanes / xarxes lliures / xarxes socials. Aquestes xarxes han estat possibles gràcies a diverses raons que han fet assequible a col•lectius de persones, tant els aparells com els coneixements necessaris per dur a terme aquestes actuacions. Dintre d’aquest marc, al Bages, concretament a Manresa, es va començar a desenvolupar una d’aquestes xarxes. Les decisions d’aquesta xarxa d’utilitzar exclusivament hardware i software de codi obert, i determinats aspectes tècnics de la xarxa, ha comportat que la xarxa fos incompatible amb algunes de les aplicacions de gestió de xarxes existents desenvolupades per comunicats com gufi.net a Osona. És per això que per garantir el creixement, la supervivència i l’èxit d’aquesta xarxa en el temps, és indispensable poder comptar amb una eina de gestió que s’adigui a les característiques de GuifiBages. L’objectiu principal d’aquest treball és dotar a la xarxa GuifiBages de les eines necessàries per poder gestionar tota la informació referent a l’estructura de la seva xarxa, tant per facilitar l’accés a nous usuaris sense molts coneixements tècnics, com per facilitar nous desplegaments / reparacions / modificacions de la xarxa d’una manera automàtica. Com a conclusió d’aquest treball, podem afirmar que les avantatges que proporciones tecnologies com Plone, faciliten enormement la creació d’aplicacions de gestió de continguts en entorn web. Alhora, l’ús de noves tècniques de programació com AJAX o recursos com els que ofereix Google, permeten desenvolupar aplicacions web que no tenen res a envejar al software tradicional. D’altra banda, voldríem destacar l’ús exclusiu de programari lliure tant en els paquets de software necessaris pel desenvolupament, com en el sistema operatiu i programes dels ordinadors on s’ha dut a terme, demostrant que es poden desenvolupar sistemes de qualitat sense dependre de programari privatiu.

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The RPC Detector Control System (RCS) is the main subject of this PhD work. The project, involving the Lappeenranta University of Technology, the Warsaw University and INFN of Naples, is aimed to integrate the different subsystems for the RPC detector and its trigger chain in order to develop a common framework to control and monitoring the different parts. In this project, I have been strongly involved during the last three years on the hardware and software development, construction and commissioning as main responsible and coordinator. The CMS Resistive Plate Chambers (RPC) system consists of 912 double-gap chambers at its start-up in middle of 2008. A continuous control and monitoring of the detector, the trigger and all the ancillary sub-systems (high voltages, low voltages, environmental, gas, and cooling), is required to achieve the operational stability and reliability of a so large and complex detector and trigger system. Role of the RPC Detector Control System is to monitor the detector conditions and performance, control and monitor all subsystems related to RPC and their electronics and store all the information in a dedicated database, called Condition DB. Therefore the RPC DCS system has to assure the safe and correct operation of the sub-detectors during all CMS life time (more than 10 year), detect abnormal and harmful situations and take protective and automatic actions to minimize consequential damages. The analysis of the requirements and project challenges, the architecture design and its development as well as the calibration and commissioning phases represent themain tasks of the work developed for this PhD thesis. Different technologies, middleware and solutions has been studied and adopted in the design and development of the different components and a big challenging consisted in the integration of these different parts each other and in the general CMS control system and data acquisition framework. Therefore, the RCS installation and commissioning phase as well as its performance and the first results, obtained during the last three years CMS cosmic runs, will be

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Las técnicas de análisis forense digital, de aplicación en investigación criminal, también se pueden usar en las bibliotecas para acceder a información digital almacenada en soportes o formatos obsoletos. Se analizan distintos ejemplos de departamentos de análisis forense creados por bibliotecas y se describen los elementos de hardware y software mínimos con los que se podría montar una unidad de análisis forense en cualquier biblioteca. Con este fin se presentan dos posibles configuraciones de equipamiento y se dan recomendaciones sobre organización del flujo de trabajo para la recuperación de antiguos discos duros y disquetes. Forensic analysis techniques, usually applied in criminal research, could also be used in libraries to access digital information stored in obsolete formats or storage devices. This article analyses some examples of forensic research departments created by libraries, and describes the minimal hardware and software elements required to set up a library unit specialized in forensic analysis. Two possible equipment settings are introduced and recommendations are given on how to organize a workflow to recover information stored in floppy disks, diskettes and old hard drives.

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For some years, Chemistry teachers have used scientific visualization software of molecular models in computing rooms and chemistry laboratories for educational purposes. However, its application in classrooms has been limited. This article describes the integration and use of computer programs for scientific molecular visualization in a traditional classroom. We consider that the improvement of technical aspects of their application and use (usability) has a direct effect on students' understanding of molecular structures (including students' extrinsic motivation), among other factors. Consequently, we developed a guide for the integration of hardware and software of molecular visualization for its use in the classroom.

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This thesis discusses the design and implementation of a real-time musical pair improvisation scenario for mobile devices. In the scenario transferring musical information over a network connection was required. The suitability of available wireless communication technologies was evaluated and communication was analyzed and designed on multiple layers of TCP/IP protocol stack. Also an application layer protocol was designed and implemented for the scenario. The implementation was integrated into a mobile musical software for children using available software components and libraries although the used platform lead to hardware and software constraints. Software limitations were taken into account in design. The results show that real-time musical improvisation can be implemented with wireless communication and mobile technology. The results also show that link layer had the most significant effect on real-time communication in the scenario.