Global ETD Search

361	Zero-Error capacity of quantum channels. / Capacidade Erro-Zero de canais quânticos. MEDEIROS, Rex Antonio da Costa. 01 August 2018 (has links) Submitted by Johnny Rodrigues (johnnyrodrigues@ufcg.edu.br) on 2018-08-01T21:11:37Z No. of bitstreams: 1 REX ANTONIO DA COSTA MEDEIROS - TESE PPGEE 2008..pdf: 1089371 bytes, checksum: ea0c95501b938e0d466779a06faaa4f6 (MD5) / Made available in DSpace on 2018-08-01T21:11:37Z (GMT). No. of bitstreams: 1 REX ANTONIO DA COSTA MEDEIROS - TESE PPGEE 2008..pdf: 1089371 bytes, checksum: ea0c95501b938e0d466779a06faaa4f6 (MD5) Previous issue date: 2008-05-09 / Nesta tese, a capacidade erro-zero de canais discretos sem memória é generalizada para canais quânticos. Uma nova capacidade para a transmissão de informação clássica através de canais quânticos é proposta. A capacidade erro-zero de canais quânticos (CEZQ) é deﬁnida como sendo a máxima quantidade de informação por uso do canal que pode ser enviada através de um canal quântico ruidoso, considerando uma probabilidade de erro igual a zero. O protocolo de comunicação restringe palavras-código a produtos tensoriais de estados quânticos de entrada, enquanto que medições coletivas entre várias saídas do canal são permitidas. Portanto, o protocolo empregado é similar ao protocolo de Holevo-Schumacher-Westmoreland. O problema de encontrar a CEZQ é reformulado usando elementos da teoria de grafos. Esta deﬁnição equivalente é usada para demonstrar propriedades de famílias de estados quânticos e medições que atingem a CEZQ. É mostrado que a capacidade de um canal quântico num espaço de Hilbert de dimensão d pode sempre ser alcançada usando famílias compostas de, no máximo,d estados puros. Com relação às medições, demonstra-se que medições coletivas de von Neumann são necessárias e suﬁcientes para alcançar a capacidade. É discutido se a CEZQ é uma generalização não trivial da capacidade erro-zero clássica. O termo não trivial refere-se a existência de canais quânticos para os quais a CEZQ só pode ser alcançada através de famílias de estados quânticos não-ortogonais e usando códigos de comprimento maior ou igual a dois. É investigada a CEZQ de alguns canais quânticos. É mostrado que o problema de calcular a CEZQ de canais clássicos-quânticos é puramente clássico. Em particular, é exibido um canal quântico para o qual conjectura-se que a CEZQ só pode ser alcançada usando uma família de estados quânticos não-ortogonais. Se a conjectura é verdadeira, é possível calcular o valor exato da capacidade e construir um código de bloco quântico que alcança a capacidade. Finalmente, é demonstrado que a CEZQ é limitada superiormente pela capacidade de Holevo-Schumacher-Westmoreland. Engenharia Elétrica. Canais quânticos Erro-zero de canais discretos Erro-zero de canais quânticos Canal quântico ruidoso Quantum channels Telecomunicações
362	“Accumulation by Dispossession” by the Global Extractive Industry: The Case of Canada Kinuthia, Wanyee January 2013 (has links) This thesis draws on David Harvey’s concept of “accumulation by dispossession” and an international political economy (IPE) approach centred on the institutional arrangements and power structures that privilege certain actors and values, in order to critique current capitalist practices of primitive accumulation by the global corporate extractive industry. The thesis examines how accumulation by dispossession by the global extractive industry is facilitated by the “free entry” or “free mining” principle. It does so by focusing on Canada as a leader in the global extractive industry and the spread of this country’s mining laws to other countries – in other words, the transnationalisation of norms in the global extractive industry – so as to maintain a consistent and familiar operating environment for Canadian extractive companies. The transnationalisation of norms is further promoted by key international institutions such as the World Bank, which is also the world’s largest development lender and also plays a key role in shaping the regulations that govern natural resource extraction. The thesis briefly investigates some Canadian examples of resource extraction projects, in order to demonstrate the weaknesses of Canadian mining laws, particularly the lack of protection of landowners’ rights under the free entry system and the subsequent need for “free, prior and informed consent” (FPIC). The thesis also considers some of the challenges to the adoption and implementation of the right to FPIC. These challenges include embedded institutional structures like the free entry mining system, international political economy (IPE) as shaped by international institutions and powerful corporations, as well as concerns regarding ‘local’ power structures or the legitimacy of representatives of communities affected by extractive projects. The thesis concludes that in order for Canada to be truly recognized as a leader in the global extractive industry, it must establish legal norms domestically to ensure that Canadian mining companies and residents can be held accountable when there is evidence of environmental and/or human rights violations associated with the activities of Canadian mining companies abroad. The thesis also concludes that Canada needs to address underlying structural issues such as the free entry mining system and implement FPIC, in order to curb “accumulation by dispossession” by the extractive industry, both domestically and abroad. natural resources raw materials global extractive industry mining accumulation by dispossession primitive accumulation resource curse free, prior, and informed consent (FPIC) consultation free entry Bill C-300 Omnibus Bill self-determination madaraka land grabs governance gap enforcement vacuum regulatory gap landlessness involuntary resettlement displacement liberalization financial markets capitalism International Monetary Fund (IMF) Environmental Impact Assessment (EIA) Impact and Benefits Agreement (IBA) corporate social responsibility (CSR) international political economy (IPE) Washington Consensus Poverty Reduction Strategy Paper (PRSP) sustainable development rare earth oil fossil fuels Whitehorse Mining Initiative (WMI) foreign direct investment (FDI) privatization neoliberal / corporate globalization Northern Gateway pipeline project Ring of Fire centre-periphery metropolitan-hinterland Gross Domestic Product (GDP) Extractive Industries Review (EIR) Sub-Saharan Africa war on terror terrorists false flag terrorism Fisheries Act Navigable Waters Protection Act primary goods aid Third World debt free trade modernization dependency tariffs trade barriers HudBay home country liability state Toronto Stock Exchange (TSX) spatio-temporal fix militarism Sudbury Atlantic Canada Crown neo-colonialism industrial revolution imperialism public policy democracy justice Export Development Corporation (EDC) Kimberley Process Mining Association of Canada equity austerity measures Mining Act reforms proletariat aboriginal Least Developed Countries (LDCs) developing country comparative advantage human rights export-led development Tiomin Government of Kenya Government of Canada Economic and Social Council (ECOSOC) World Bank Group (WBG) World Trade Organization (WTO) Bill C-38 Bill C-45 Assembly of First Nations (AFN) Idle No More meaningful participation AFRICOM titanium Base Resources Australia House of Commons conditionalities Structural Adjustment Programmes (SAPs)
363	Analýza a optimalizace datové komunikace pro telemetrické systémy v energetice / Analysis and Optimization of Data Communication for Telemetric Systems in Energy Fujdiak, Radek January 2017 (has links) Telemetry system, Optimisation, Sensoric networks, Smart Grid, Internet of Things, Sensors, Information security, Cryptography, Cryptography algorithms, Cryptosystem, Confidentiality, Integrity, Authentication, Data freshness, Non-Repudiation.
364	Městské lázně / The Municipal Baths Tunková, Martina January 2010 (has links) "The sick body needs a doctor friend sick souls." (Menandros)

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