ITC/USA 2005 Conference Proceedings / The Forty-First Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2005 / Riviera Hotel & Convention Center, Las Vegas, Nevada / Creating a generic, multi-vendor data exchange system for transmitting telemetry configurations between various systems is a daunting task. To date many different systems have been proposed including relational databases (RDBMS), TMATS, and several different XML schemas. Although many of these systems have been implemented, a complete, flexible solution has not been developed. This paper describes an implementation that is currently in use for exporting and importing a complete telemetry system via XML. Using this system, an engineer can import an entire telemetry configuration, a partial telemetry configuration, or even just a single measurement (parameter). As a result, the gap between user database systems and the airborne instrumentation vendor’s configuration software (IVCS) is seamlessly bridged. This provides many benefits including: the ability to rapidly change configurations, data entry error avoidance, version control, the protection of sensitive information, and configuration reusability. This system allows for the configuration of all aspects of the telemetry setup including data acquisition hardware, transmitters, ground stations, and recorders. In addition, the recorder settings and the definition of the data that are to be recorded are coupled and linked to the rest of the telemetry configuration, which facilitates future data recovery.

International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada / XML is a simple and powerful way to handle on data transfers between organizations, applications and/or computer systems. Currently, there is a significant effort within NASA to transition to XML vocabularies as the means of exchanging electronic data. XML can provide a useful way to transfer telemetry attributes data between customers and systems. The current standard for airborne telemetry data description is the Telemetry Attributes Transfer Standard (TMATS). TMATS is a well-defined, structured specification that will map into XML extremely well. This makes XML an excellent choice to supplement TMATS for the interchange of telemetry attribute information. The Western Aeronautical Test Range (WATR) at NASA Dryden Flight Research Center (DFRC) is defining an XML Schema that will be used in support of the WATR Integrated Next Generation System (WINGS). This paper describes this work in progress.

ITC/USA 2007 Conference Proceedings / The Forty-Third Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2007 / Riviera Hotel & Convention Center, Las Vegas, Nevada / In this paper, we discuss the benefits of maintaining a neutral-format hardware specification along with the telemetry metadata specification. We present several reasons and methods for maintaining the hardware specifications, as well as several potential uses of hardware specification. These uses include cross-validation with the telemetry metadata and automatic generation of both metadata and instrumentation networks.

ITC/USA 2007 Conference Proceedings / The Forty-Third Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2007 / Riviera Hotel & Convention Center, Las Vegas, Nevada / Imagine that a test vehicle has just arrived at your test facility and that it is fully instrumented with sensors and a data acquisition system (DAS). Imagine that a test engineer logs onto the vehicle’s DAS, submits a list of data requirements, and the DAS automatically configures itself to meet those data requirements. Imagine that the control room then contacts the DAS, downloads the configuration, and coordinates its own configuration with the vehicle’s setup. Imagine all of this done with no more human interaction than the original test engineer’s request. How close to this imaginary scenario is the instrumentation community? We’re not there yet, but through a variety of efforts, we are headed towards this fully automated scenario. This paper outlines the current status, current projects, and some missing pieces in the journey towards this end. This journey includes standards development in the Range Commander’s Council (RCC), smart sensor standards development through the Institute of Electrical and Electronics Engineers (IEEE), Small Business Innovation Research (SBIR) contracts, efforts by the integrated Network Enhanced Telemetry (iNET) project, and other projects involved in reaching this goal.

ITC/USA 2010 Conference Proceedings / The Forty-Sixth Annual International Telemetering Conference and Technical Exhibition / October 25-28, 2010 / Town and Country Resort & Convention Center, San Diego, California / In this paper, we discuss ways in which web services can be used in future T&E scenarios, from the initial hardware setup to making dynamic configuration changes and data requests. We offer a comparison of this approach to other standards such as SNMP, FTP, and RTSP, describing the pros and cons of each as well as how these standards can be used together for certain applications.

ITC/USA 2011 Conference Proceedings / The Forty-Seventh Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2011 / Bally's Las Vegas, Las Vegas, Nevada / Describing data formats has gone a long way in providing a common thread for moving test programs from one test range to another without incurring massive code rewrites. The introduction of the IRIG 106-93 standard provided the Telemetry Attributes Transfer Standard (TMATS) to achieve interoperability between the test article and ground processing system. The integrated Network Enhanced Telemetry (iNET) Metadata Description Language (MDL) extends the concept to include descriptions of the equipment configuration and setup. This MDL declarative language is both vendor neutral and vendor customizable (where needed) and extends interoperability down to the individual components of the instrumentation system. This paper describes the current state of MDL and its use across intended vendor lines.

published_or_final_version / Humanities / Master / Master of Philosophy

<p>Användandet av Web Services har ökat de senaste åren, det är relativt lätt att utveckla dessa tjänster och de kan användas i de allra flesta miljöer. Ett bekymmer är dock säkerhetsfrågan. Denna uppsats studerar de vanligaste teknikerna för att säkra Web Services, beskriver hur de kan användas samtidigt diskuterar fördelar och nackdelar med flera av dem. Till sist ges förslag på hur Web Services i olika typer av miljöer kan säkras.</p> / <p>The usage of Web Services has increased during recent years, its relatively easy to develop and can be used in almost any environment. One concern however is the security aspect. This essay studies the most common techniques for securing Web Services and describes how they can be used. It also discusses some pros and cons about them. Finally this paper suggests some ways to secure Web Services used in different environment.</p>

No description available.

Data Exchange is the problem of transforming data in one format (the source schema) into data in another format (the target schema). Its core component is a schema mapping, which is a high level specification of how such transformation should be done. Relational data exchange has been extensively studied, but exchanging XML data have been paid much less attention. The goal of this thesis is to develop a theory of XML data exchange with expressive schema mappings, extending a previous work using restricted mappings. Our mapping language is based on tree patterns that can use horizontal navigation and data comparison in addition to downward navigation. First we look at static analysis problems concerning a single mapping. More specif- ically, we consider consistency problems with different flavours. One such problem, for instance, asks if any tree has a solution under the given mapping. Then we turn to analyse the complexity of mapping themselves, i.e., recognising pairs of trees such that the one is mapped to the other. For both problems, we provide classifications based on sets of features used in the mappings. Second we investigate the composition of XML schema mappings. Generally it is hard, or rather simply impossible, to achieve closure under composition in XML settings unlike in relational settings. Nevertheless we identify a class of XML schema mappings that is closed under composition. Lastly we consider the problem of query answering. It is important to exchange data so that we can feasibly answer queries while it often leads to intractability. We identify the dividing line between tractable and intractable cases: answering queries with extended features is always intractable while tractability of answering simple queries can be retained in extended mappings.