Focus presuppositions

This paper reviews notions related to focus and presupposition and addresses the hypothesis that focus triggers an existential presupposition. Presupposition projection behavior in certain examples appears to favor a presuppositional analysis of focus. It is argued that these examples are open to a different analysis using givenness theory. Overall, the analysis favors a weak semantics for focus not including an existential presupposition

Mr. Kaffeemann\u27s Flat

Fiction by Dorit Pau

Environmental NGOs in China - partners in environmental governance

This paper is a snapshot of the potential of Chinese environmental NGOs1 to effectively address environmental problems and needs, alone and in partnership with others. As environmental NGOs have only be on stage for the last ten years or so and as they undergo dynamic changes, a thoroughly conducted scientific analysis about the strengths, weaknesses, opportunities and risks is not possible yet. However, as the author has more than six years working experience with different Chinese environmental NGOs across the country, some empiric findings can be given, and some trends and tendencies be predicted. The paper starts with a look at the history of NGOs in China with a specific focus on environmental NGOs, followed by problems and chances caused by the present legal status of the groups. It then describes the main working areas of Chinese environmental NGOs, illustrating them by giving some representative examples. After a brief analysis, the paper proposes current trends and tendencies about the development of China’s environmental NGOs. The main trend is that Chinese NGOs, independently on their origin (grass root, semistate organizations or Government-organized non-profit environmental organizations) will gain more respect and influence in both environmental awareness raising and as competent partners in policy formulation and law enforcement, if the State institutions concerned will involve them in planning and developing processes in an early stage and assist them in their capacity building. --

Epistemic NP Modifiers

The paper considers participles such as "unknown", "identified" and "unspecified", which in sentences such as "Solange is staying in an unknown hotel" have readings equivalent to an indirect question "Solange is staying in a hotel, and it is not known which hotel it is." We discuss phenomena including disambiguation of quantifier scope and a restriction on the set of determiners which allow the reading in question. Epistemic modifiers are analyzed in a DRT framework with file (information state) discourse referents. The proposed semantics uses a predication on files and discourse referents which is related to recent developments in dynamic modal predicate calculus. It is argued that a compositional DRT semantics must employ a semantic type of discourse referents, as opposed to just a type of individuals. A connection is developed between the scope effects of epistemic modifiers and the scope-disambiguating effect of "a certain".Comment: Final pre-publication version, 27 pages, Postscript. Final version appears in the proceedings of SALT VI

Adiabatic Quantum State Generation and Statistical Zero Knowledge

The design of new quantum algorithms has proven to be an extremely difficult task. This paper considers a different approach to the problem, by studying the problem of 'quantum state generation'. This approach provides intriguing links between many different areas: quantum computation, adiabatic evolution, analysis of spectral gaps and groundstates of Hamiltonians, rapidly mixing Markov chains, the complexity class statistical zero knowledge, quantum random walks, and more. We first show that many natural candidates for quantum algorithms can be cast as a state generation problem. We define a paradigm for state generation, called 'adiabatic state generation' and develop tools for adiabatic state generation which include methods for implementing very general Hamiltonians and ways to guarantee non negligible spectral gaps. We use our tools to prove that adiabatic state generation is equivalent to state generation in the standard quantum computing model, and finally we show how to apply our techniques to generate interesting superpositions related to Markov chains.Comment: 35 pages, two figure