@inproceedings{42029, author = {{Jöns, Klaus D. and Hafenbrak, R and Atkinson, P and Rastelli, A and Schmidt, O.G and Michler, P}}, number = {{4}}, pages = {{697--701}}, title = {{{Quantum state tomography measurements on strain-tuned In(x)Ga(1−x)As/GaAs quantum dots}}}, volume = {{249}}, year = {{2012}}, } @article{42044, author = {{Huber, Klaus and Scheler, Ulrich}}, issn = {{1359-0294}}, journal = {{Current Opinion in Colloid & Interface Science}}, keywords = {{Colloid and Surface Chemistry, Polymers and Plastics, Physical and Theoretical Chemistry, Surfaces and Interfaces}}, number = {{2}}, pages = {{64--73}}, publisher = {{Elsevier BV}}, title = {{{New experiments for the quantification of counterion condensation}}}, doi = {{10.1016/j.cocis.2012.01.005}}, volume = {{17}}, year = {{2012}}, } @misc{42357, author = {{Tumat, Antje}}, booktitle = {{Die Musikforschung}}, number = {{4}}, pages = {{409--412}}, publisher = {{Bärenreiter}}, title = {{{Diva – Die Inszenierung der übermenschlichen Frau. Interdisziplinäre Untersuchungen zu einem kulturellen Phänomen des 19. und 20. Jahrhunderts. Hrsg. von Rebecca Grotjahn, Dörte Schmidt und Thomas Seedorf. Schliengen: Edition Argus 2011. 275 S., Abb., Nbsp. (Forum Musikwis-senschaft. Band 7.)}}}, volume = {{65}}, year = {{2012}}, } @inproceedings{8169, abstract = {{The polynomial hierarchy plays a central role in classical complexity theory. Here, we define a quantum generalization of the polynomial hierarchy, and initiate its study. We show that not only are there natural complete problems for the second level of this quantum hierarchy, but that these problems are in fact hard to approximate. Our work thus yields the first known hardness of approximation results for a quantum complexity class. Using these techniques, we also obtain hardness of approximation for the class QCMA. Our approach is based on the use of dispersers, and is inspired by the classical results of Umans regarding hardness of approximation for the second level of the classical polynomial hierarchy (Umans 1999). We close by showing that a variant of the local Hamiltonian problem with hybrid classical-quantum ground states is complete for the second level of our quantum hierarchy.}}, author = {{Gharibian, Sevag and Kempe, Julia}}, booktitle = {{International Colloquium on Automata, Languages, and Programming (ICALP 2012)}}, editor = {{Czumaj, Artur and Mehlhorn, Kurt and Pitts, Andrew and Wattenhofer, Roger}}, isbn = {{978-3-642-31594-7}}, location = {{Warwick, UK}}, pages = {{387--398}}, publisher = {{Springer Berlin Heidelberg}}, title = {{{Hardness of Approximation for Quantum Problems}}}, doi = {{10.1007/978-3-642-31594-7_33}}, year = {{2012}}, } @article{8175, abstract = {{Approximation algorithms for classical constraint satisfaction problems are one of the main research areas in theoretical computer science. Here we define a natural approximation version of the QMA-complete local Hamiltonian problem (where QMA stands for Quantum Merlin Arthur) and initiate its study. We present two main results. The first shows that a nontrivial approximation ratio can be obtained in the class NP using product states. The second result (which builds on the first one) gives a polynomial time (classical) algorithm providing a similar approximation ratio for dense instances of the problem. The latter result is based on an adaptation of the “exhaustive sampling method” by Arora, Karger, and Karpinski [J. Comput. System Sci., 58 (1999), p. 193] to the quantum setting and might be of independent interest.}}, author = {{Gharibian, Sevag and Kempe, Julia}}, issn = {{0097-5397}}, journal = {{SIAM Journal on Computing}}, number = {{4}}, pages = {{1028--1050}}, publisher = {{Society for Industrial & Applied Mathematics (SIAM)}}, title = {{{Approximation Algorithms for QMA-Complete Problems}}}, doi = {{10.1137/110842272}}, volume = {{41}}, year = {{2012}}, } @article{8174, abstract = {{We propose a measure of non-classical correlations in bipartite quantum states based on local unitary operations. We prove the measure is non-zero if and only if the quantum discord is non-zero; this is achieved via a new characterization of zero discord states in terms of the state's correlation matrix. Moreover, our scheme can be extended to ensure the same relationship holds even with a generalized version of quantum discord in which higher-rank projective measurements are allowed. We next derive a closed form expression for our scheme in the cases of Werner states and (2 x N)-dimensional systems. The latter reveals that for (2 x N)-dimensional states, our measure reduces to the geometric discord [Dakic et al., PRL 105, 2010]. A connection to the CHSH inequality is shown. We close with a characterization of all maximally non-classical, yet separable, (2 x N)-dimensional states of rank at most two (with respect to our measure).}}, author = {{Gharibian, Sevag}}, journal = {{Physical Review A}}, pages = {{042106}}, publisher = {{American Physical Society}}, title = {{{Quantifying nonclassicality with local unitary operations}}}, doi = {{10.1103/PhysRevA.86.042106}}, volume = {{86}}, year = {{2012}}, } @article{34847, abstract = {{Let G be a wreath product of the form C₂ ≀ H, where C₂ is the cyclic group of order 2. Under mild conditions for H we determine the asymptotic behavior of the counting functions for number fields K/k with Galois group G and bounded discriminant. Those counting functions grow linearly with the norm of the discriminant and this result coincides with a conjecture of Malle. Up to a constant factor these groups have the same asymptotic behavior as the conjectured one for symmetric groups. }}, author = {{Klüners, Jürgen}}, issn = {{1793-0421}}, journal = {{International Journal of Number Theory}}, number = {{03}}, pages = {{845--858}}, publisher = {{World Scientific Pub Co Pte Lt}}, title = {{{The Distribution of Number Fields with Wreath Products as Galois Groups }}}, doi = {{10.1142/s1793042112500492}}, volume = {{08}}, year = {{2012}}, } @book{41447, editor = {{Fuchs, Christian and Boersma, Kees and Albrechtslund, Anders and Sandoval, Marisol}}, publisher = {{Routledge}}, title = {{{Internet and Surveillance. The Challenges of Web 2.0 and Social Media}}}, year = {{2012}}, } @article{41441, author = {{Fuchs, Christian and Mosco, Vincent}}, journal = {{tripleC – Open Access Journal for a Global Sustainable Information Society}}, number = {{2}}, pages = {{127--632}}, title = {{{Marx is Back – The Importance of Marxist Theory and Research for Critical Communication Studies Today}}}, doi = {{https://doi.org/10.31269/triplec.v10i2.427}}, volume = {{10}}, year = {{2012}}, } @article{41448, author = {{Fuchs, Christian and Bolin, Göran}}, journal = {{tripleC – Open Access Journal for a Global Sustainable Information Society}}, number = {{1}}, pages = {{30--91}}, title = {{{Critical Theory and Political Economy of the Internet @ Nordmedia 2011}}}, volume = {{10}}, year = {{2012}}, } @article{41604, author = {{Fuchs, Christian}}, journal = {{tripleC – Journal for a Global Sustainable Information Society}}, number = {{2}}, pages = {{692--740}}, title = {{{Dallas Smythe Today – The Audience Commodity, the Digital Labour Debate, Marxist Political Economy and Critical Theory. Prolegomena to a Digital Labour Theory of Value}}}, doi = {{https://doi.org/10.31269/triplec.v10i2.443}}, volume = {{10}}, year = {{2012}}, } @article{41608, author = {{Fuchs, Christian}}, journal = {{Sociologia della Communicazione}}, pages = {{62--86}}, title = {{{La politica economica dei social media [The political economy of social media, in Italian]}}}, volume = {{43}}, year = {{2012}}, } @article{41603, author = {{Fuchs, Christian}}, journal = {{Capital & Class}}, number = {{3}}, pages = {{383--391}}, title = {{{Behind the News. Social Media, Riots, and Revolutions}}}, volume = {{36}}, year = {{2012}}, } @article{41619, author = {{Fuchs, Christian and Bolin, Göran}}, journal = {{tripleC – Journal for a Global Sustainable Information Society}}, number = {{1}}, pages = {{30--32}}, title = {{{Introduction to the Special section “Critical theory and political economy of the Internet (Nordmedia 2011)“}}}, doi = {{https://doi.org/10.31269/triplec.v10i1.339}}, volume = {{10}}, year = {{2012}}, } @inbook{41665, author = {{Fuchs, Christian}}, booktitle = {{International communication. Four-Volume Set. Volume 2}}, editor = {{Thussu, Daya}}, publisher = {{Sage}}, title = {{{Grounding Critical Communication Studies}}}, year = {{2012}}, } @article{42606, author = {{Fuchs, Christian}}, journal = {{tripleC - Journal for a Global Sustainable Information Society}}, number = {{1}}, pages = {{114--121 }}, title = {{{New Marxian Times! Reflections on the 4th ICTs and Society Conference "Critique, Democracy and Philosophy in 21st Century Information Society. Towards Critical Theories of Social Media"}}}, doi = {{https://doi.org/10.31269/triplec.v10i1.411}}, volume = {{10}}, year = {{2012}}, } @techreport{42720, author = {{Amicelle, Anthony and Bus, Jacques and El-Baba, Taghrid and Fuchs, Christian and Mordini, Emilio and Rebera, Andrew and Robinson, Neil and Trottier, Daniel and Venier, Silvia and Wright, Steve}}, title = {{{Report on Theoretical Frameworks and Previous Empirical Research. Deliverable D1.1 of the EU FP7 project “PACT – Public Perception of Security and Privacy: Assessing Knowledge, Collecting Evidence, Translating Research into Action” (grant agreement number: 285635)}}}, year = {{2012}}, } @techreport{42721, author = {{Mordini, Emilio and Bus, Jacques and Rebera, Andrew P. and Venier, Silvia and McCarthy, Sadhbh and Hayes, Ben and Wright, Steve and Deering, Daniel and Fuchs, Christian and Trottier, Daniel and Krieglsteiner, Susann and El-Baba, Taghrid}}, title = {{{Societal Impact Report. Deliverable D1.4 of the EU FP7 project “PACT – Public Perception of Security and Privacy: Assessing Knowledge, Collecting Evidence, Translating Research into Action” (grant agreement number: 285635)}}}, year = {{2012}}, } @inbook{25960, abstract = {{We report on sensing properties of ordered mesoporous nanostructures of In2O3 synthesized by nanocasting procedure towards NO2. The nanostructured material shows improved recover times and higher responses compared to non nanostructured material at low operating temperatures (100–150°C) thus allowing the use for low power NO2 sensors. These properties may be related to fast oxygen in and out propagation facilitated by an enhanced surface accessibility of the nanostructure.}}, author = {{Donato, Nicola and Wagner, Thorsten and Tiemann, Michael and Waitz, Thomas and Kohl, Claus-Dieter and Latino, Mariangela and Neri, Giovanni and Spadaro, Donatella and Malagù, Cesare}}, booktitle = {{Lecture Notes in Electrical Engineering}}, issn = {{1876-1100}}, title = {{{NO2 Sensors with Reduced Power Consumption Based on Mesoporous Indium Oxide}}}, doi = {{10.1007/978-1-4614-0935-9_10}}, year = {{2012}}, } @techreport{42968, author = {{Allmer, Thomas}}, issn = {{2219-603X}}, title = {{{Research Design & Data Analysis, Presentation, and Interpretation: Part One}}}, year = {{2012}}, }