Trafiq används av Columna för att distribuera trafikinformation. Funktionen är först och främst att förädla och förmedla information. En viktig del i denna tjänst är kopplingen mot Vägverkets (VV) tjänst Triss som förser Trafiq med trafikinformation. Överföringen av information från VV till Columna sker idag med filer och FTP. VV tillhandahåller numera en tjänst där data skickas på XML-format med http. Min uppgift var att implementera mottagaren i .NET och C# på Columna. I utredningen utreds de mekanismer som ligger till grund för Internettjänster och distribuerade funktioner över Internet. Min slutsats är att http och webbservrar är ett kraftfullt verktyg och kan användas för att lösa många problem som har med datorkommunikation att göra.

Chemnitz, Techn. Univ., Diplomarb., 2000.

Submitted by Marco Antônio de Ramos Chagas (mchagas@ufv.br) on 2017-08-15T16:41:16Z No. of bitstreams: 1 texto completo.pdf: 1525409 bytes, checksum: e659096640260a698cf91d83dff59550 (MD5) / Made available in DSpace on 2017-08-15T16:41:16Z (GMT). No. of bitstreams: 1 texto completo.pdf: 1525409 bytes, checksum: e659096640260a698cf91d83dff59550 (MD5) Previous issue date: 2016-02-23 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Uma função do ciclo dos ácidos tricarboxilicos (TCA) em plantas é a produção de 2-oxoglutarato (2-OG) necessário para a assimilação do nitrogênio. No ciclo TCA, o isocitrato desidrogenase e a 2-oxoglutarato desidrogenase (2-OGDH) estão envolvidos na síntese e consumo do 2-OG respectivamente. O complexo 2-OGDH é formado por três subunidades responsáveis pela descarboxilação do 2-OG a succinil CoA com a consequente redução do NAD + . Notavelmente a 2-OGDH tem uma função essencial na atividade metabólica geral em plantas, limitante na respiração e importante na interação carbono-nitrogênio. Em Arabidopsis thaliana, as subunidades E 1 e E 2 são codificadas cada uma por dois genes. Neste trabalho foram utilizados duas linhagens mutantes caracterizadas pela inserção do T-DNA para cada gene que codifica a subunidade E 1 e E 2 da 2-OGDH. As linhagens mutantes para as duas subunidades da 2-OGDH apresentaram uma diminuição substancial na respiração. A fotossíntese também foi alterada nas plantas com baixa expressão da subunidade E 1 . Muitas mudanças foram observadas para os metabólitos primários, diminuição dos níveis dos principais metabólitos que contem nitrogênio e aumento dos metabólitos relacionados com o metabolismo do carbono, culminando em alterações no crescimento vegetal e na produção de sementes. Embora as duas subunidades E 1 e E 2 são codificadas cada uma por dois genes, estes genes apresentam funções parcialmente redundantes no metabolismo e crescimento vegetal. / One of the roles of the tricarboxylic acid (TCA) cycle in plants is the production of 2-oxoglutarate (2-OG) required for nitrogen assimilation. In this cycle, isocitrate dehydrogenase and 2-oxoglutarate dehydrogenase (2- OGDH) is involved in synthesis and consumption of 2-OG, respectively. 2- OGDH complex is composed of three subunits responsible for decarboxylation of 2-OG to succinyl CoA with the consequent reduction of NAD + . Notably the 2-OGDH plays an essential role in overall metabolic activity in plants, being limited for respiration and playing important role in the carbon-nitrogen interactions. In Arabidopsis thaliana, E 1 and E 2 subunits are encoded each by two genes. Here, I used two T-DNA insertion mutant lines in each gene encoding E 1 and E 2 subunits of 2-OGDH. For both subunits of 2-OGDH mutant plants exhibited substantial reduction in respiration. The photosynthesis was also altered in plants with low expression of E 1 subunit. Several changes were observed for primary metabolites, with decreased levels of the main nitrogen containing metabolites and increase in metabolites related to carbon metabolism, culminated in alterations of plant growth and seed production. Although both E 1 and E 2 subunits each one are encoded by two genes, they display partial redundant roles in metabolism and plant growth.

This work deals with an analysis and design of application programming interface (API) within the architectural style known as REST (Representational State Transfer). Beginning of this thesis covers basic introduction of HTTP protocol and REST fundamentals, followed by analysis and solution proposals of common situations that can occur in API. Sample application was implemented by following these proposals.

Swedbank är en av Sveriges största företag inom finanssektorn med drygt fyra miljoner privatkunder och försöker ständigt utveckla sina tjänster så att de är lättåtkomliga och lättanvända för kunderna. För att tillfredsställa sina kunders behov av en snabb och lättåtkomlig bank så vill Swedbank minska på laddningstiderna till sina finanstjänster, särskilt de mobila tjänsterna då det är där uppkopplingarna är som långsammast. Uppdraget var att göra en prestandaanalys av HTTP/2 som är den senaste versionen av HTTP-protokollet. Efter att ha genomfört arbetet ska Swedbank veta vad dem kan anpassa för att göra sina tjänster så optimala som möjligt för framtiden.Resultatet visade att med hjälp av HTTP/2’s nya funktioner, bland annat det binära ramlagret, uppnåddes en prestandaökning på 44% av totala laddningstiden på Swedbank’s hemsida. Testerna genomfördes i en lokal labbmiljö där de olika HTTP versionerna installerades och mätvärden dokumenterades. Detta ansågs som ett bra resultat utan att ha genomfört någon fördjupande konfiguration. / Swedbank is one of Sweden’s biggest banks with estimated four million private customers and they are constantly trying to improve their services so they become more user-friendly and faster. To satisfy their customer’s need of fast and easy services Swedbank wants to lower the loading times on the web services to the user experience is faster and smoother, especially for the users doing their banking on a smartphone. The mission is to do a per-formance analysis of the new HTTP protocol HTTP/2 and take out the most essential parts so Swedbank knows what to take advantage of when installing the new versions on their servers to achieve optimal services.The results showed that after implementing HTTP/2’s new features, Swedbank’s website performance increased with 44% in total loading time. The tests were performed in a local experimental environment where the earlier HTTP versions was installed and the perfor-mance metrics was documented.

A Ressonância Magnética (RM) é uma técnica extremamente promissora para diversas áreas do conhecimento, desde seu uso conhecido em medicina até aplicações na indústria a fim de melhorar a eficiência de diversos processos. Este projeto trata do desenvolvimento de uma das partes do Espectrômetro Digital de RM desenvolvido pelo Centro de Imagens e Espectroscopia in vivo por Ressonância Magnética (CIERMag), o controlador de bobinas de shimming. O ajuste de shimming oferece melhorias significativas no resultado de experimentos e é parte integral de qualquer sistema de RM tanto por imagens como por espectroscopia. Foi idealizado um equipamento para estabelecer as correntes adequadas em bobinas de shimming que pode ser acessado tanto local como remotamente, permitindo a integração com outros subsistemas do Espectrômetro Digital. O equipamento consiste de hardware específico para estabelecer e analisar as correntes estabelecidas em bobinas de shimming e também de software adequado. Este projeto estabelece as diretrizes de funcionamento do controlador de bobinas de shimming e como ele interage com outros equipamentos. / Magnetic Resonance is an extremely promising technique to many areas of knowledge, from its use in medicine to industrial applications where it can improve the efficiency of different processes. This project describes the development of one element of the Digital Spectrometer being developed by CIERMag: the shimming coil controller. Shimming adjustments in magnetic resonance improves experiments results significantly and is an integral part of any magnetic resonance system, from imaging to spectroscopy. A system as developed to establish the proper currents in shimming coils that can be accessed both locally and remotely, easing the integration with other subsystems of the Digital Spectrometer. The controller consists of both custom built hardware and software to establish and analyze the currents in shimming coils. This project also establishes the controller requirements and how it interacts with other systems.

Práce přibližuje základy protokolu HTTP a možnosti využití dynamického zasílání www stránek. První kapitola popisuje protokol HTTP na obecné úrovni, druhá se věnuje dynamicky zasílaným stránkám. Přínosem je ukázka implementace na dvou prakticky využitelných aplikacích. První z nich je automatický rozcestník pro webové sídlo, jehož úkolem je přesměrovat uživatele na nejvhodnější jazykovou verzi v závislosti na hodnotě hlavičky Accept-Language nebo IP adrese a druhou je download platforma pro společnost nabízející zábavní obsah pro mobilní telefony, jež poskytuje uživateli optimální verzi obsahu v závislosti na user-agent hlavičce jeho přístroje.

A Ressonância Magnética (RM) é uma técnica extremamente promissora para diversas áreas do conhecimento, desde seu uso conhecido em medicina até aplicações na indústria a fim de melhorar a eficiência de diversos processos. Este projeto trata do desenvolvimento de uma das partes do Espectrômetro Digital de RM desenvolvido pelo Centro de Imagens e Espectroscopia in vivo por Ressonância Magnética (CIERMag), o controlador de bobinas de shimming. O ajuste de shimming oferece melhorias significativas no resultado de experimentos e é parte integral de qualquer sistema de RM tanto por imagens como por espectroscopia. Foi idealizado um equipamento para estabelecer as correntes adequadas em bobinas de shimming que pode ser acessado tanto local como remotamente, permitindo a integração com outros subsistemas do Espectrômetro Digital. O equipamento consiste de hardware específico para estabelecer e analisar as correntes estabelecidas em bobinas de shimming e também de software adequado. Este projeto estabelece as diretrizes de funcionamento do controlador de bobinas de shimming e como ele interage com outros equipamentos. / Magnetic Resonance is an extremely promising technique to many areas of knowledge, from its use in medicine to industrial applications where it can improve the efficiency of different processes. This project describes the development of one element of the Digital Spectrometer being developed by CIERMag: the shimming coil controller. Shimming adjustments in magnetic resonance improves experiments results significantly and is an integral part of any magnetic resonance system, from imaging to spectroscopy. A system as developed to establish the proper currents in shimming coils that can be accessed both locally and remotely, easing the integration with other subsystems of the Digital Spectrometer. The controller consists of both custom built hardware and software to establish and analyze the currents in shimming coils. This project also establishes the controller requirements and how it interacts with other systems.

This thesis is focused on collecting data from commercial geolocation databases and its analysis. The theoretical part discusses techniques of IP geolocation, briefly describes commercial geolocation databases and mechanisms for accessing their geolocation services. The practical part of this thesis involves implementation of scripts for collecting and modification data retrieved from commercial geolocation databases for further analysis. First script collects the data and store them in output files in specified format. Second script modifies gathered data to achieve better accuracy. Detailed analysis is performed afterwards. Analysis is performed at several levels. This includes country, region and city accuracy as well as accuracy on latitude and longitude parameters. Output of this analysis will be conclusive, and will also display accuracy of tested geolocation services. The aim of this thesis is to analyze currently available commercial geolocation services and to prove their accuracy. Used scripts are implemented in Python programming language in version 3 using modules urllib, re and json. Scripts are test on commodity hardware with Linux operating system.

The Hypertext Transfer Protocol (HTTP) is one the foundations of the modern Internet. Because HTTP servers may be subject to unexpected periods of high load, developers use HTTP benchmarking utilities to simulate the load generated by users. However, many of these tools do not report performance details at a per-client level, which deprives developers of crucial insights into a server's performance capabilities. In this work, we present ink, an HTTP benchmarking tool that enables developers to better understand server performance. ink provides developers with a way of visualizing the level of service that each individual client receives. It does this by recording a trace of events for each individual simulated client. We also present a GUI that enables users to explore and visualizing the data that is generated by an HTTP benchmark. Lastly, we present a method for running HTTP benchmarks that uses a set of distributed machines to scale up the achievable load on the benchmarked server. We evaluate ink by performing a series of case studies to show that ink is both performant and useful. We validate ink's load generation abilities within the context of a single machine and when using a set of distributed machines. ink is shown to be capable of simulating hundreds of thousands of HTTP clients and presenting per-client results through the ink GUI. We also perform a set of HTTP benchmarks where ink is able to highlight performance issues and differences between server implementations. We compare servers like NGINX and Apache and highlight their differences using ink. / Master of Science / The World Wide Web (WWW) uses the Hypertext Transfer Protocol to send web content such as HTML pages or video to users. The servers providing this content are called HTTP servers. Sometimes, the performance of these HTTP servers is compromised because a large number of users requests documents at the same time. To prepare for this, server maintainers test how many simultaneous users a server can handle by using benchmarking utilities. These benchmarking utilities work by simulating a set of clients. Currently, these tools focus only on the amount of requests that a server can process per second. Unfortunately, this coarse-grained metric can hide important information, such as the level of service that individual clients received. In this work, we present ink, an HTTP benchmarking utility we developed that focuses on reporting information for each simulated client. Reporting data in this way allows for the developer to see how well each client was served during the benchmark. We achieve this by constructing data visualizations that include a set of client timelines. Each of these timelines represents the service that one client received. We evaluated ink through a series of case studies. These focus on the performance of the utility and the usefulness of the visualizations produced by ink. Additionally, we deployed ink in Virginia Tech's Computer Systems course. The students were able to use the tool and took a survey pertaining to their experience with the tool.