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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

SMADL – The social machines architecture description language

Nascimento, Leandro Marques do 31 January 2014 (has links)
Submitted by Nayara Passos (nayara.passos@ufpe.br) on 2015-03-12T14:23:54Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) TESE Leandro Marques do Nascimento.pdf: 4935348 bytes, checksum: 593ec08be509bd200bc5ec59fccb17d6 (MD5) / Made available in DSpace on 2015-03-12T14:23:54Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) TESE Leandro Marques do Nascimento.pdf: 4935348 bytes, checksum: 593ec08be509bd200bc5ec59fccb17d6 (MD5) Previous issue date: 2014 / CNPq, INES / É possível se observar um alto crescimento no número de aplicações Web sendo desenvolvidas. Isto está acontecendo principalmente porque a Web está entrando em uma nova fase, chamada Web programável, onde diversos sistemas baseados na Web estão disponibilizando suas APIs publicamente. Com o objetivo de lidar com a complexidade dessa Web emergente, este trabalho define a noção de uma Máquina Social (Social Machine - SM) e vislumbra uma linguagem que permite descrever redes de tais máquinas. Para começar, nós definimos uma Máquina Social como sendo “um componente conectável e programável que encapsula (WI) um sistema de processamento de informação (IPS) e define um conjunto de serviços requeridos (RS) e providos (PS), dinamicamente disponível sob certas restrições (C), as quais são determinadas por, dentre outras coisas, seus relacionamentos (Rel) com terceiros”. Em outras palavras, uma SM é uma máquina conectada, normalmente à Web, que dinamicamente provê e/ou requer um conjunto de serviços de acordo com os seus relacionamentos estabelecidos. Qualquer aplicação na Web pode ser vista como uma SM. Para que seja possível a aplicação prática do conceito de Máquina Social previamente mencionado, nós definimos SMADL, uma linguagem para descrição arquitetural de SMs, como uma tentativa de ser uma forma completamente diferente de se programar a Web, misturando conceitos de linguagens de descrição arquitetural (ADLs) e linguagens específicas de domínio (DSLs). Como uma ADL, a linguagem permite a descrição de máquinas sociais (e redes de tais) em termos de relacionamentos (Rel) como abstrações de alto nível, sem a necessidade de se especificar os detalhes de comunicação (protocolos) e/ou métodos de autenticação. Como uma DSL, ela permite a criação e integração de serviços Web usando uma sintaxe de tipos dinâmicos, integrada à máquina virtual Java e à IDE Eclipse. Cada elemento do conceito de uma SM é diretamente mapeado na linguagem. Em poucas palavras, SMADL pode ser definida como uma linguagem dirigida a relacionamentos que pode ser usada para descrever interações entre qualquer número de máquinas de inúmeras formas, como um meio de representar máquinas interagindo na Web realmente e, obviamente, como um meio de representar interações com outras máquinas sociais também. Vários outros esforços já foram feitos para definir ADLs e alguns deles foram, de alguma forma, aplicados no domínio da Web. Entretanto, há uma clara falta de base fundamental que provenha abstrações de alto nível tais como o modelo de máquinas sociais provê. SMADL foi implementada em duas versões, uma textual e outra visual. Ambas as versões foram avaliadas através de um estudo de caso e uma pesquisa baseada na opinião de especialista e indicaram ser boas soluções para problemas práticos. / We are experiencing a high growth in the number of Web applications being developed. This is happening mainly because the Web is going into a new phase, called programmable Web, where several Web-based systems make their APIs publicly available. In order to deal with the complexity of this emerging Web, we define the notion of a Social Machine and envisage a language that can describe networks of such. To start with, we define a Social Machine (SM) as a “connectable and programmable building block that wraps (WI) an information processing system (IPS) and defines a set of required (RS) and provided services (PS), dynamically available under constraints (C) which are determined by, among other things, its relationships (Rel) with others”. In other words, a SM is a connected machine, usually to the Web, which dynamically provides and/or requires a set of services according to its established relationships. Any application in the Web can be seen as a SM. In order to make feasible the practical application of the aforementioned Social Machine concept, we define SMADL – the Social Machines Architecture Description Language – as an attempt to be a completely different way to program the Web, mixing concepts from Architecture Description Languages (ADLs) and Domain-Specific Languages (DSLs). As an ADL, it allows the description of Social Machines (and networks of such) in terms of relationships (Rel) as high-level abstractions, without the need to specify details of communication (protocols) and/or authentication methods. As a DSL, it allows the implementation and integration of Web services using a dynamically typed syntax, fully integrated to the Java Virtual Machine and Eclipse IDE. Every element of the SM concept is directly mapped into the language. In few words, SMADL can be defined as a relationship-driven language which can be used to describe the interactions between any number of machines in a multitude of ways, as a means to represent real machines interacting in the real Web and, obviously, as a means to represent interactions with other social machines too. Several other efforts have been done to define ADLs, and a few of them were someway applied to the Web domain. However, there is a clear lack of fundamental base to provide high-level abstractions that the Social Machine concept does. SMADL has been implemented in two versions, one textual and one visual. Both versions have been evaluated through a case study and an expert’s opinion survey and demonstrated to be good solutions for practical problems.
22

Estudo sobre os métodos de diversidade para sistemas de TV digital

Rabaça, Ricardo Seriacopi 08 August 2017 (has links)
Submitted by Marta Toyoda (1144061@mackenzie.br) on 2018-02-06T23:04:35Z No. of bitstreams: 2 RICARDO SERIACOPI RABAÇA.pdf: 12578451 bytes, checksum: 9aa6f50946d5c917a7ea4e5b6841ef6f (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Paola Damato (repositorio@mackenzie.br) on 2018-04-03T12:57:50Z (GMT) No. of bitstreams: 2 RICARDO SERIACOPI RABAÇA.pdf: 12578451 bytes, checksum: 9aa6f50946d5c917a7ea4e5b6841ef6f (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2018-04-03T12:57:50Z (GMT). No. of bitstreams: 2 RICARDO SERIACOPI RABAÇA.pdf: 12578451 bytes, checksum: 9aa6f50946d5c917a7ea4e5b6841ef6f (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2017-08-08 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Fundo Mackenzie de Pesquisa / This project presents the history, basic information and advantages of using Software De ned Radio (SDR), diversity, layer division multiplexing (LDM) technique and the latest digital TV standards in a digital communication system. These subjects have been relevant in the scienti c community, making the project attractive in terms of the possibility of discoveries and optimizations. After that, the implementation of a digital communication system using these technologies is proposed. This implementation was performed by means of GRC simulation software and the use of C++ and Python programming languages. Therefore, it was necessary to test the steps of coding, modulation and digital transmission / reception. Finally, tests were performed with systems that use diversity, for example, Single-Input Single-Output (SISO), as well as setting Single-Input Multiple-Output (SIMO), using the settings 1x 2, 1x3 and 1x4, in order to compare possible advantages in spectrum utilization, data rate and system robustness to interference. / O presente projeto apresenta o histórico, as informações básicas e as vantagens da utilização do rádio definido por software, do inglês Software Defined Radio (SDR), da diversidade, da técnica de multiplexacão por divisão em camadas, do inglês Layered Division Multiplexing (LDM) e dos mais modernos padrões de TV digital em um sistema de comunicação digital. Estes temas vêm repercutindo de forma relevante na comunidade científica, tornando o projeto atrativo em termos de possibilidade de descobertas e otimização. Posteriormente, a implementação de um sistema de comunicação digital unindo estas tecnologias _e proposta. Esta implementação foi realizada por meio do software de simulação GNU Radio Companion (GRC) e do uso das linguagens de programação C++ e Python. Para tanto, foi necessário testar as etapas de codificação, modulação e a transmissão/recepção digital. Finalmente, foram realizados testes com sistemas que utilizam diversidade, como, por exemplo, os métodos com uma entrada e uma saída, do inglês Single-Input Single-Output (SISO), além do método com uma entrada e múltiplas saídas, do inglês Single-Input Multiple-Output (SIMO), com as configurações 1x2, 1x3 e 1x4, com o intuito de comparar possíveis vantagens no aproveitamento do espectro, na taxa de dados e na robustez do sistema à interferências.
23

Trådlösa tekniker i tidskritiska system : En experimentell jämförelse mellan Zigbee 3.0 och Bluetooth Low Energy 5.2 / Wirelss technologies in time-critical system : An experimental comparison between Zigbee 3.0 and Bluetooth Low Energy 5.2

Hsertawbu, Naw Michey Hsalehleh, Sabbagh, Marwa January 2021 (has links)
Examensarbetet genomfördes tillsammans med företaget Rol Ergo. Syftet med studien var att analysera Zigbee 3.0 och Bluetooth Low Energy 5.2 och deras lämplighet i tidskritiska system genom att studera latensen och förhållandet mellan signalstyrkan och avståndet mellan de två kommunikationsprodukter. Datainsamlingen genomfördes med en experimentell studie och utifrån kunskap som framskaffats har ett visst antal bestämda experiment utförts för att svara på frågeställningarna som ställs.  Datainsamlingen visar att både maxlatensen och typiska latensen hos Zigbee är lägre än maxlatens och typiska latens för Bluetooth Low Energy. Datainsamlingen för signalstyrkan visar att Bluetooth Low Energys signalstyrka blir mer påverkad av avståndet mellan kommunikationsprodukterna än vad Zigbees blir. Det visar även att den optimala förhållande mellan signalstyrkan och avståndet hos Zigbee är bättre än hos Bluetooth Low Energy.  Slutsatsen av arbetet är att Zigbee är mer lämpad för tidkritiska system än Bluetooth Low Energy då låg latensen prioriteras. Zigbee är även mer lämpad då lång distansen prioriteras men då bör signalstyrkan ligga runt -50dBm. Bluetooth Low Energy är dock mer lämpad då lång distans inte prioriteras och signalstyrkan inte behöver vara utmärkt för att kunna kommunicera.  Begränsningarna för arbetet är att Bluetooth Low Energy och Zigbee endast har prövats på utvecklingskortet nRF5340 DK.  På grund av den begränsade tiden så har endast ett antal bestämda experiment som har föreslagits av rådgivare på Rol Ergo utförts. / The thesis has been conducted together with  Rol Ergo company. The purpose of this study is to analyse Zigbee 3.0 and Bluetooth Low Energy 5.2 and their suitability for time-critical systems, by studying latency and the relations between signal strength and distance between two communication products. The data collection was completed by an experimental study. By using knowledge that has been collected for the study, sets of experiments will be performed to answer the research questions.  Results of the collected data indicate that both the maximum latency and the typical latency for Zigbee is significantly lower than for Bluetooth Low Energy. The collected data for signal strength shows that the signal strength for Bluetooth Low Energy is more affected by distance between the communication product, than Zigbee’s is. It also shows that the optimal ratio between signal strength and distance for Zigbee is better than for Bluetooth Low Energy. The conclusion of the study shows Zigbee to be a more suitable for time-critical systems compared to Bluetooth Low Energy when low latency is being prioritized. Zigbee is also more suitable for time-critical systems when long distance is being prioritized, however the signal strength must then be around -50 dBm. Bluetooth Low Energy is more suitable when long distance is not the priority, and the signal strength does not have to be excellent to be able to communicate.  The limitations for this thesis are that Bluetooth Low Energy and Zigbee will only be tested on the nRF5349 Development Kit. given limited time, only a certain of experiments, whereas some have been suggested by advisors from Rol Ergo, has been carried out.
24

Fokus på hållbarhet? : En analys av kulturmiljövårdens miljömässiga hållbarhetsarbete analyserat enligt Kulturvård 3.0 / Focus on sustainability? : The environmental dimension of cultural heritage management analysed through Kulturvård 3.0

Hallstensson, Andréa January 2022 (has links)
Uppsatsen har två tydliga utgångspunkter. Den ena lyfter fram Agenda 2030 som en gemensam målbild för det hållbarhetsarbete som behöver ske för att uppnå ett socialt, ekonomiskt och miljömässigt hållbart samhälle inom överskådlig framtid. Den andra är det självklara i att: när kulturmiljövårdssektorn argumenterar för att det byggda kulturarvet bör bevaras så innebär det även, per definition, en möjlighet till resurshushållning av ändliga materiella resurser. Uppsatsen belyser frågor kring hur konsulter inom den svenska kulturmiljövården ställer sig till att använda miljömässiga hållbarhetsargument i relation till uppdragsgivare och myndigheter. Frågan ställs huruvida det ingår i kulturmiljövårdens roll att argumentera för hushållandet av ändliga materiella resurser jämte bevarandet av kulturvärden? Intervjuer har genomförts med 18 representanter från kulturmiljövården, dess uppdragsgivare och beställare samt Stockholms Statsbyggnadskontor. Sammanfattningsvis visar undersökningen att respondenterna anser att kulturmiljövårdssektorn idag inte använder sig av miljömässiga argument för att lyfta fram hushållandet av ändliga materiella resurser. En majoritet av respondenterna ställer sig positiva till att sektorn skulle kunna göra det i framtiden. Attityder kring livscykelanalyser baserade på generisk data har undersökts som ett möjligt verktyg för att synliggöra och kvantifiera eventuella miljömässiga vinster i samband med bevarande av det byggda kulturarvet. Detta som ett exempel på ett konkret miljömässigt argument. 17 av 18 respondenter i undersökningen anser att det vore användbart, dock utifrån olika perspektiv. Vidare pekar intervjusvaren på att det råder delade meningar kring vilken roll kulturmiljövården ska ha inom hållbar samhällsbyggnad, och om miljömässiga argument bör innefattas i den rollen. Intervjusvaren sätts in i en bredare kontext via analysen som tar avstamp i tankemodellen Kulturvård 3.0. Här definieras tre faser inom vilka kulturmiljövården verkar. Dessa kan sammanfattas som: fas 1.0 där fokus ligger på att bevara och skydda byggnader, 2.0 där fokus ligger på att vårda och restaurera byggnader, 3.0 där fokus ligger på att använda byggnader på ett sätt som kan bidra till hållbar utveckling. Enligt analysen ligger uppsatsens frågeställningar fortfarande inom pågående förhandling kring vad som bör ingå i kulturmiljövårdens framtida roll. Förhandlingen kan i sin tur ses som en del av fas 3 i tankemodellen, där teman som hållbar utvekling, anpassad återanvändning, kulturmiljövården som resurs samt samarbete över sektorsgränser, står som riktmärken.
25

The Establishment of Internal Corporate Venturing for a Virtual Economy in Web 3.0 setting / Etableringen av intern företagssatsning för en virtuell ekonomi i webb 3.0-miljö

Phosaard, Pada, Yang, Qingyi January 2022 (has links)
The virtual economy has been gaining attraction since the increase of blockchain and web 3.0technology adoption. However, regarding the rise of web3.0 startups, the corporate pursuing this technology are still limited. Due to the early stage of technology, this research aims to study the critical driving forces in thriving internal capability enhancement and achieving long-term sustainable competitive advantages. Furthermore, the corporate venture builder mechanism will be investigated and analyzed in terms of essential barriers to incubating, accelerating, and successfully spin-off the web 3.0 venture from the corporate. This research aims to identify critical barriers regarding the five following aspects: Governance, Resources management, Corporate venture builder structure and processes, Ecosystem, and Technology and business capabilities. This research extracts empirical data from the semi-structured interviews from multi-stakeholders perspectives and the result shows that most interviewees have a similar understanding of fundamental VB structure and processes, while some details might be adapted based on each corporate’s context, size, prerequisite expertise, and capabilities. Moreover, the critical drivers can be considered a long-term aspiration of sustainable internal capability enhancement and competitiveness advantages. While the leadership in the governance aspect is one of the most critical barriers for a new venture toestablish. / Den virtuella ekonomin har sett ett växande intresse i samband med den ökade adaptionen av blockchain- och web3.0-teknologi. Men när det gäller uppkomsten av web3.0-startups är det fortfarande begränsat med företag som eftersträvar att arbeta med denna teknik. På grund av teknikens tidiga skede syftar denna forskning till att studera de kritiska drivkrafterna för blomstrande intern kapacitetsförbättring och för att uppnå långsiktigt hållbara konkurrensfördelar. Dessutom kommer mekanismen för internt företagsbyggande att undersökas och analyseras i termer av väsentliga hinder för att inkubera, accelerera och framgångsrikt spinna av web3.0-satsningar från företaget. Denna forskning syftar till attidentifiera kritiska barriärer för de fem följande aspekterna: Styrning, Resursförvaltning, Corporate venture builder-struktur och processer, Ekosystem och Teknik och affärs kapacitet. Denna forskning extraherar empirisk data från de semistrukturerade intervjuerna från perspektiv av flera intressenter, och analyserar och kombinerar även de sekundära datakällorna för vidare diskussion. Resultatet visar att de flesta intervjupersoner har en liknande förståelse för grundläggande VB-struktur och processer, medan vissa detaljer kan anpassas baserat på varje företags sammanhang, storlek, förutsättningsexpertis och kapacitet. Dessutom kan de kritiska drivkrafterna betraktas som en långsiktig strävan efter hållbar intern kapacitetsförbättring och konkurrensfördelar. Medan ledarskapet i förvaltningsaspekten är en av de mest kritiska barriärerna för att en ny satsning ska etableras.
26

How can Interaction Design enhance web 3.0 wallet usability? : Focusing on trust, security, user flow and interface of proposed Skane Wallet.

Vančo, Damián January 2024 (has links)
This study explores the adop)on of crypto assets and the onboarding of new users into Web 3.0 products through the lens of interac)on design. By employing par)cipatory design methodology during the design process, this work inves)gates the challenges faced by beginner or occasional users. By analyzing tradi)onal banking applica)ons like Revolut, Swish, and Slovak Tatra Banka, and comparing them with Binance exchange, the study proposes an approach to new technological applica)ons based on situa)onal normality theory. The final concept contributes to the discussion on the role interac)on design can play in the vola)le world of crypto assets and Web 3.0.
27

Information Presentation in Search Engines on Mobile Devices

Öfverman, Jakob January 2010 (has links)
<p>This thesis discusses the possibilities to visualise the presentation layer of a search engine on a mobile device in an alternative way. Previous work in the area has shown that the use of text-based-lists can be problematic when accessed on a device with a limited display. In the scope of the thesis and in order to tackle the current problems when displaying the results a literature review was carried out. The findings of the review formed the basis for a requirement definition on which a mock-up was developed. The mock-up was then evaluated and tested during a usability test where a number of users got to experience the alternative presentation layer that uses a visualisation technique called tree- map. The results from the test show that the mock-up could be seen as a alternative to the current presentation of results. The mock-up also shows that a future implementation could also include the use of categories and sorting of information in order to provide content with a meaning.</p>
28

Mukbang Influencers: Online eating becomes a new marketing strategy : A case study of small sized firms in China’s food industry

Babenskaite, Greta, Yang, Mengyu January 2019 (has links)
Mukbang is a Korean word for ‘eating livestream’. As an emerging sub-genre of internet influencers, Mukbang influencers has become the marketing tool for some firms recently. In this paper, we will conduct a case study of small sized e-commerce firms in China’s food industry. We explore firms’ perspectives towards the emerging Mukbang phenomenon, aiming to find out which factors influence the adoption of Mukbang influencer marketing by small firms. Our research results illustrate that the main point of concern for companies is the lack of information about financial data such as the average return on investment, and also the lack of information on consumer preferences and consumer analysis. Opportunity, potential benefits, uncertainty, resources available and the characteristics of the firms (or to be more specific, the management team) are important factors that influence small firms’ marketing decisions to use or not internet influencer marketing.
29

Mathcad Prime 3.0

Wüst, Michael 26 June 2013 (has links) (PDF)
Unternehmensvorstellung Parametric Technology und Roadmap PTC Mathcad Prime 3.0
30

Information Presentation in Search Engines on Mobile Devices

Öfverman, Jakob January 2010 (has links)
This thesis discusses the possibilities to visualise the presentation layer of a search engine on a mobile device in an alternative way. Previous work in the area has shown that the use of text-based-lists can be problematic when accessed on a device with a limited display. In the scope of the thesis and in order to tackle the current problems when displaying the results a literature review was carried out. The findings of the review formed the basis for a requirement definition on which a mock-up was developed. The mock-up was then evaluated and tested during a usability test where a number of users got to experience the alternative presentation layer that uses a visualisation technique called tree- map. The results from the test show that the mock-up could be seen as a alternative to the current presentation of results. The mock-up also shows that a future implementation could also include the use of categories and sorting of information in order to provide content with a meaning.

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