The Target Positioning Sensor (TPS) is used by cranes to locate containers in ports and on cargo ships. The reliability of the communication network between the TPS and the Programmable Logic Controller (PLC) is important to optimise the productivity of the container terminal. Lost data messages between the network devices will lead to delays and production loss for the terminal. The main goal of this thesis project is to make the Ethernet-based network between the TPS and the PLC more reliable. The current sensor network protocol uses the User Datagram Protocol (UDP), and the project aims to replace that with the Transport Control Protocol (TCP). This includes designing a new message handling application and performing case studies on how to best handle compatibility issues between the TPS and the PLC, to improve the longevity of the application. The case studies led to considering an adaptable behaviour toward future software updates in different parts of the network. An application which used TCP to communicate between a PC and a PLC was developed, intended to be used as a reference during future integration into the actual sensor network. The TCP application works but needs to be improved before being implemented in a real system. In addition, the project also looked into Time-Sensitive Networking, which is a method of increasing link capacity and reliability in time-sensitive network implementations. This was done through a literature study on the IEEE Time-Sensitive Networking Standard, which showed that the application of the standard could be beneficial if more sensors are added to the network of if the sampling frequency of the TPS is increased.

Submitted by Vanessa Nunes (vnunes@unisinos.br) on 2015-03-26T13:41:47Z No. of bitstreams: 1 LeslieChaves.pdf: 20284351 bytes, checksum: 9da747a9d9fe58b9c22f33555022bc5b (MD5) / Made available in DSpace on 2015-03-26T13:41:47Z (GMT). No. of bitstreams: 1 LeslieChaves.pdf: 20284351 bytes, checksum: 9da747a9d9fe58b9c22f33555022bc5b (MD5) Previous issue date: 2014-05-23 / CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Esta tese faz uma reflexão acerca dos usos da internet pelos movimentos sociais negros em rede na comunicação de suas agendas de luta pela igualdade racial. Através do Estudo de Caso da atuação da Agência Afroétnica de notícias Afropress, são pensados os agenciamentos, práticas, e tensões envolvidos na experiência de uso da internet em um projeto comunicacional focado na militância contra o racismo.Fundada em maio de 2004 em São Paulo, a Afropress é uma das primeiras agências de notícias especializada em assuntos relacionados à cidadania e identidade dos afrodescendentes, busca da igualdade racial e luta contra o racismo, também denunciando situações de discriminação. Seu site www.afropress.com.br é a principal interface de atuação e visibilidade da entidade, que também tem perfis nos sites de relacionamento Facebook, Orkut e Twitter, e ainda no site de compartilhamento de vídeos YouTube. O objetivo da investigação foi lançar um olhar à experiência da Agência à luz dos eixos teóricos da comunicação em rede, internet, movimentos sociais e luta pela igualdade racial, relacionando esses pontos para entender a atuação do ativismo pela igualdade racial nesse momento em que a sociedade, dentro de suas diversas temporalidades, vive a era da informação. A investigação tem caráter qualitativo e a estratégia metodológica utilizada para análise dos dados é o Estudo de Caso. Como técnicas de construção dos dados empíricos, foram utilizadasa Observação, a Entrevista, e ainda as pesquisas bibliográfica e documental. Entre os resultados da investigação, foi possível verificar que a comunicação continua sendo uma estratégia importante na militância negra, e tem se afirmado cada vez mais nos processos de lutas pela igualdade racial, com a inserção das tecnologias da comunicação e informação, especialmente da internet, que também potencializou a atuação em rede dos movimentos sociais negros. Ainda, constatou-se que a Afropress simultaneamente exerce a função de mídia jornalística engajada, e espaço de empoderamento dos movimentos sociais negros, de visibilidade, de discussões, tensões e geração de práticas em torno das agendas de luta pela igualdade racial. / This thesis reflects on the uses of the internet by black social movements in network in the communication of their agendas of struggles for racial equality. Through the Case Study of the performance of Afropress News Agency, are thought the agencements, practices, and tensions involved in the experience of using the internet in a communicational project focused in activism against racism. Founded in May 2004 in São Paulo, the Afropress is one of the first news agencies specializing in issues related to citizenship and identity of African descents, the pursuit of racial equality and fight against racism, also denouncing discrimination. Its web site www.afropress.com.br is the main interface of activity and visibility of the organization, which also have profiles on Facebook, Orkut and Twitter, and also on YouTube. The aim of the investigation was to cast an eye on the experience of the Agency in the light of theoretical axes of network communication, internet, social movements and the struggle for racial equality, linking these points to understand the role of activism for racial equality in a moment when society, within its several temporalities, lives the information age. The methodological approach built for this research is qualitative and the methodological strategy for the analysis of the data is the Case Study. As construction techniques of empirical data we have used Observation, both for the routine work of Afropress, as for the materiality of the object represented by its web site; the Interview, and also the bibliographic and documentary research. Among the research results, we could verify that communication is still an important strategy in black activism, and has increasingly affirmed itself in the processes of struggle for racial equality, with the insertion of information and communication technologies, especially of the internet, which also potentialized the network performance of black social movements. Still, it was observed that the Afropress simultaneously exercises the function of engaging news media, and space of the empowerment of the black social movements, visibility, discussions, tensions and of the generation of practices around the of struggle for racial equality agendas.

The Internet is a collection of computer networks; it is the most important networkingenvironment in the world, it used for information interchanges in virtual network. Wirelesstechnologies, such as Wi-Fi, WiMAX etc, can suggest more suitable and cooler way forinformation interchanges in virtual network.The most well-known ongoing wireless city projects are counting Wireless Philadelphia, GoogleWi-Fi Mountain View, Wireless Taipei City, and San Francisco Tech Connect project. Web haslimits of interactivity and presentation. The Web’s client-server architecture blocks informationexchange. Furthermore, most Web applications are only intended for conservative computers,not for mobile handheld devices. In period of information exchange on the Web, the new Web2.0 is suggested. Web 2.0 refers to a perceived or planned second generation of Internet-basedservices, such as public networking sites, wikis, communication tools, which highlight onlineteamwork and sharing among users.A virtual network or online community is a collection of people that may or may not chiefly ororiginally connect or interact via the Internet. Virtual network have also become an additionalform of communication amid people who know each other in actual life. Today, virtual networkcan be used insecurely for a diversity of social collections interacting via the Internet. It does notunavoidably mean that there is a solid bond between the members.The validation methods like internal validity, external validity and Reliability for this researchand how it affects these methods for our research. We also use interview method has beenconsidered for this research. We will use diagrams, models, prototypes, and texts, to illuminate our result. We will define allthe diagrams and models and prototypes in my own text. We will give the reference of theoriginal data collected from various sources where as from Internet, websites, books andJournals. / Program: Magisterutbildning i informatik

Fundação de Amparo a Pesquisa no Estado do Rio Grande do Sul / This study aims to investigate the construction process of collective identities in the social movement Slut Walk SM, collective action empirically located in Santa Maria, center of Rio Grande do Sul state in southern Brazil, from network communication dynamics built between the online and offline environments. We start, therefore, the conceptual approach that shapes the contemporary social movements along the processes of communication and information. Taking this premise in mind, we turn to the context of digital networks ubiquity and the Internet communication to reflect its appropriation in the effectuation and coordination of collective actions organization developed nowadays. With emphasis on communication processes, the work is performed from ethnographic experience in a communication research, in particular, from the combination of a field observations between online and offline environments. Thus, from a previous literature review, we define the cultural social movements as the Slut Walk, as analytical constructs developed around actions related to collective identities, oppositions, conflicts and struggle projects. Moreover, with the gender theory we present a brief conceptual framework about the universe of contemporary feminism and its contextual crossings on the ground of communication. Also, with the network society concept, we reflect the particularities of a social context organized through the communication and technological changes, and relate to the current configuration of the network social movements. From this, the research focuses on the interpretation of the research field reaching the settings that constitute the Slut Walk - SM as a social movement anchored by network communication logic through social uses of a Page and a Group of discussion in the social network Facebook. In the end, the study revealed that the communication network integrates the dynamics of identity construction of the Slut Walk under the scope of the differences, of gender policies, and senses about feminism. Senses, that are deliberate from the positions, opinions, debates and conflicts between the subjects in networks and on the streets. / Este estudo tem por objetivo investigar o processo de construção das identidades coletivas no movimento social Marcha das Vadias SM, ação coletiva empiricamente localizada na cidade de Santa Maria, centro do estado do Rio Grande do Sul, na região Sul do Brasil, a partir das dinâmicas de comunicação em rede construídas entre os ambientes online e offline. Partimos, assim, do enfoque conceitual que configura os movimentos sociais contemporâneos junto aos processos de comunicação e informação. Levando essa premissa em consideração, recorremos ao contexto de ubiquidade das redes digitais e da comunicação pela internet para refletir sua apropriação na efetivação e articulação no contorno organizacional das ações coletivas desenvolvidas na atualidade. Com ênfase nos processos comunicacionais, o trabalho é realizado a partir da experiência etnográfica em uma pesquisa no campo da comunicação, em especial, a partir da combinação de um campo de observações entre os ambientes online e offline. Assim, a partir de uma pesquisa bibliográfica prévia, definimos os movimentos socais de base cultural, como a Marcha das Vadias, como construções analíticas desenvolvidas em torno de ações relacionadas a identidades coletivas, oposições, conflitos e projetos de luta. Além disso, nos contornos da teoria das relações de gênero, construímos um breve arcabouço conceitual sobre o universo do feminismo contemporâneo e seus atravessamentos contextuais sobre o terreno da comunicação. Também, junto ao conceito de sociedade em rede, refletimos as particularidades de um contexto social organizado através das transformações comunicacionais e tecnológicas, e o relacionamos com a configuração atual dos movimentos sociais em rede. A partir disso, a pesquisa centra-se na interpretação do campo de investigação chegando às definições que constituem a Marcha das Vadias SM enquanto um movimento social ancorado pelas lógicas de comunicação em rede através dos usos sociais de uma Página e de um Grupo de discussão da rede social online Facebook. Ao final, o estudo permitiu identificar que a comunicação em rede integra as dinâmicas da própria construção identitária da Marcha das Vadias, sob o espectro diferenças, das políticas de gênero, e dos sentidos sobre o feminismo que o movimento busca enunciar. Sentidos estes, deliberados a partir do contato com posicionamentos, opiniões, debates e conflitos entre os sujeitos nas redes e nas ruas.

Les architectures des machines de calcul sont de plus en plus complexes et hiérarchiques, avec des processeurs multicœurs, des bancs mémoire distribués, et de multiples bus d'entrées-sorties. Dans le cadre du calcul haute performance, l'efficacité de l'exécution des applications parallèles dépend du coût de communication entre les tâches participantes qui est impacté par l'organisation des ressources, en particulier par les effets NUMA ou de cache.Les travaux de cette thèse visent à l'étude et à l'optimisation des communications haute performance sur les architectures hiérarchiques modernes. Ils consistent tout d'abord en l'évaluation de l'impact de la topologie matérielle sur les performances des mouvements de données, internes aux calculateurs ou au travers de réseaux rapides, et pour différentes stratégies de transfert, types de matériel et plateformes. Dans une optique d'amélioration et de portabilité des performances, nous proposons ensuite de prendre en compte les affinités entre les communications et le matériel au sein des bibliothèques de communication. Ces recherches s'articulent autour de l'adaptation du placement des tâches en fonction des schémas de transfert et de la topologie des calculateurs, ou au contraire autour de l'adaptation des stratégies de mouvement de données à une répartition définie des tâches. Ce travail, intégré aux principales bibliothèques MPI, permet de réduire de façon significative le coût des communications et d'améliorer ainsi les performances applicatives. Les résultats obtenus témoignent de la nécessité de prendre en compte les caractéristiques matérielles des machines modernes pour en exploiter la quintessence. / The emergence of multicore processors led to an increasing complexity inside the modern servers, with many cores, distributed memory banks and multiple Input/Output buses. The execution time of parallel applications depends on the efficiency of the communications between computing tasks. On recent architectures, the communication cost is largely impacted by hardware characteristics such as NUMA or cache effects. In this thesis, we propose to study and optimize high performance communication on hierarchical architectures. We first evaluate the impact of the hardware affinities on data movement, inside servers or across high-speed networks, and for multiple transfer strategies, technologies and platforms. We then propose to consider affinities between hardware and communicating tasks inside the communication libraries to improve performance and ensure their portability. To do so,we suggest to adapt the tasks binding according to the transfer method and thetopology, or to adjust the data transfer strategies to a defined task distribution. Our approaches have been integrated in some main MPI implementations. They significantly reduce the communication costs and improve the overall application performance. These results highlight the importance of considering hardware topology for nowadays servers.

Nowadays, there are many multimedia applications, which are usually inaccessible. These applications are often generated in closed communities, such as on universities as diploma thesis. The objective of this work is to create a web interface which will allow access to these multimedia applications, whose authors decided to display the app on the website. Part of the solution will be SDK, enabling developers to make their applications accessible from web.

Idag beskärs en stålrulle inom stålindustrin i ett skärverk, stålrullarna delas tillmindre delband med dålig kontroll av skärgradshöjdens kvalitet. Stickprover tas manuelltvilket endast blir ett fåtal stickprover på en stålrulle som har 150 delband ochär 30 kilometer i längd. En hål omsändning för en stålrulle kostar upp mot en miljonkronor och har en negativ klimatpåverkan. En mjukvaruprototyp för detektering avskärgradshöjd med en referenslinje togs fram. Prototypen innehöll en ljussensor, tvåmotorer, en PC och en prototypkonstruktion. Varje uppgift i programvaran tilldeladesen egen tråd. Operativsystem, trådar och algoritmer prestanda testades för mätningav exekveringstider och periodtider. Resultatet visade att en skärgradsdetektorvar möjlig att realisera. Algoritmen för skärgradshöjd med referenslinje detekteradeskärgradshöjden där amplituden var tillräckligt stor. / Today, a steel roll is cut within the steel industry in a cutting factory, the steel rollsare divided to smaller part bands with poor control of the burr height quality. Samplesis taken manually, the amount of samples is too low to know the quality of thesteel roll, the steel rolls can be divided up to 150 times and the length will be 30 kilometers. A whole resend for one steel roll costs up against a million SEK and has anegative climatic impact. One software prototype for detection of burr heights witha reference line was programmed. The prototype contained one light sensor, two motors,a PC and one prototype construction. Each task in the software was allocatedan own thread. Operating systems, threads and algorithms was performance testedfor measurement of execution times and period times. The result showed that a burrheight detector where possible to implement. The algorithm could detect burrheights that were too large related to its reference line.

For multiplayer games, the performance of the server’s Central Processing Unit (CPU) is the main factor that limits the number of players on the server at the same time. Compared with the CPU, the Field-Programmable Gate Array (FPGA) architecture has no instructions set and no shared memory. Offloading some tasks from the CPU to the FPGA may help the CPU improve processing efficiency. This thesis explores which tasks on a CPU can be offloaded to a FPGA and how to design such a circuit system. The performance of the developed system also needs to be measured. We decided to offload communication tasks and data processing tasks to an FPGA. The result is that the FPGA server is available for work, the maximum number of users is 80, and the maximum network latency is 30-40 ms. The most important result is that a FPGA can be used as a multi-player server. One of the severe limitations of this design is the number of hardware resources. A 7-series FPGA is divided into several similar clock regions, which means the number of Flip Flop (FF)s near the same clock edge is fixed. If adding more FFs in the same component, the routing delay can not meet the set-up time requirements. Previously, people used the FPGA as the support accelerator to the server CPU. The CPU still works as a paramount communication link with one or several multi-connection parts and connects to the FPGA via the Peripheral Component Interconnect Express (PCIe) to use the FPGA to process data or pack/unpack Ethernet frames. We have designed and implemented a whole multi-connection server in a Hardware Description Language (HDL) and downloaded the resulting hardware in an FPGA. / I spel med flera spelare är serverns CPU-prestanda (Central Processing Unit) den viktigaste faktorn som begränsar antalet spelare som servern samtidigt kan hantera. Jämfört med CPU:n har en FPGA (Field-Programmable Gate Array) inga instruktioner och inget delat minne. Avlastning av vissa uppgifter från den CPU till FPGA:n kan hjälpa CPU:n att förbättra bearbetningseffektiviteten. I denna avhandling undersöks vilka uppgifter på en CPU som kan överföras till en FPGA och hur man utformar ett sådant kretsystem. Prestandan hos det utvecklade systemet måste också mätas. Vi har beslutat att avlasta kommunikationsuppgifter och databehandlingsuppgifter. till en FPGA. Resultatet är att FPGA-servern är tillgänglig för arbete, det maximala antalet användare är 80, och den maximala nätverksfördröjningen är 30-40 ms. Det viktigaste resultatet är att en FPGA kan användas som en server för flera spelare. En av de allvarliga begränsningarna med denna konstruktion är antalet hårdvaruresurser. En FPGA i 7-serien är uppdelad i flera liknande klockregioner, vilket innebär att antalet Flip Flop (FF)s nära en klocka är fast. Om man lägger till fler FF:er i samma komponent, kommer fördröjningen inte att uppfylla tidskraven för setup. Tidigare har folk använt sig av FPGA:n som en stödaccelerator till serverprocessorn. CPU:n fungerar fortfarande som en viktig kommunikationslänk med en eller flera anslutningar och ansluter till FPGA:n via Peripheral Component Interconnect Express (PCIe) för att använda FPGA:n till att bearbeta data och paketera/packa upp Ethernet-ramar. Vi har implementerat en hel server med flera anslutningar med hjälp av hårdvaruvarubeskrivande språk (HDL) och laddat ner den resulterande designen i en FPGA.

Ett identifierat problem inom modebranschen idag är den mängd returer som utförs till följd av felbeställningar av kläder som är köpta online. Tre anledningar till felbeställningar som leder till returer är att konsumenterna inte kan prova plaggen innan köp, produktbilderna är missvisande, eller att storleks beskrivningen inte överensstämmer med verklig storlek. Denna studien undersöker om det finns ett samband mellan felbeställningar och att konsumenter inte fysiskt kan prova de kläder som de köper online. Vidare syftar denna studien till att undersöka om innovativ digital teknik kan bidra till en lösning av det identifierade problemet. Studien är utförd genom en blandad forskningsmetod där information kring tidigare forskning och ny data samlats in genom litteraturstudier, intervjuer och enkätundersökningar. Studien förstärker den initiala hypotesen att det i dagsläget finns väldigt lite forskning kring kopplingen Metaverse, e-handel och digital provning. Studien visar dock att det finns ett intresse från både konsumenter och producenter att lära sig mer om Metaverse och eventuellt implementera och använda tekniken i framtiden. För att detta ska ske behöver teknologin utvecklas och man behöver också göra stora ekonomiska insatser. / An identified problem in the fashion industry today is the amount of returns made due to incorrect orders for clothes purchased online. Three reasons for incorrect orders that lead to returns are that consumers can not try on the garments before buying, the product images are misleading, or the size description does not correspond to the actual size. This paper examines whether there is a link between wrong orders and whether consumers can not physically try on the clothes they buy online. Furthermore, this paper investigates whether innovative digital technology can contribute to a solution to the identified problem. The paper was carried out through a mixed research method where information about previous research and new data was collected through literature studies, interviews, and questionnaires. The paper strengthens the initial hypothesis that there is currently very little research on the Metaverse connection, e-commerce, and digital testing. However, the paper shows that consumers and producers are interested in learning more about Metaverse and possibly implementing and using the technology in the future. For this to happen, technology needs to be developed and great financial efforts also need to be made.

Approved for public release; distribution is unlimited / Handheld devices have evolved significantly from mere simple organizers to more powerful handheld computers that are capable of network connectivity, giving it the ability to send e-mail, browse the World Wide Web, and query remote databases. However, handheld devices, because of its design philosophy, are limited in terms of size, memory, and processing power compared to desktop computers. This thesis investigates the use of Data Flow Query Language (DFQL) in querying local and remote databases from a handheld device. Creating Standard Query Language (SQL) queries can be a complex undertaking; and trying to create one on a handheld device with a small screen only adds to its complexity. However, by using DFQL, the user can submit queries with an easy to use graphical user interface. Although handheld devices are currently more powerful than earlier PCs, they still require applications with a small footprint, which is a limiting factor for software developed. This thesis will also investigate the best division of labor between handheld device and remote servers. / Sergeant, United States Army