4,044 research outputs found

    Till Death Do Us Part: A Comparative Law Approach to Justifying Lethal Self-Defense by Battered Women

    Get PDF
    Till death do us part : a comparative law approach to justifying lethal self- defense by battered women. - In: Duke journal of comparative & international law. 1. 1991. S. 169-21

    Synthesis and evaluation of polymers for use in early warning fire alarm devices

    Get PDF
    Conjugated polyacetylene polymers and one condensation polyene, all containing a high degree of conjugated unsaturation, were synthesized. These polymers were characterized by chemical analysis and by thermogravimetric analysis, as well as for their film-forming capability and gas/polymer interactions. It was found that those that had a high degree of conjugated unsaturation and had resonance - stabilizing groups were very thermally stable to 200 C, e.g., poly(dicyanoacetylene), poly(ethynylferrocene) and poly(phenylacetylene); while those with labile moieties, such as poly(p-formamidophenylacetylene), among others, suffered some degradation when heated in air. When subjected to gas/polymer interaction effects, the greatest change in electrical conductance was observed when ammonia was used as the gas and poly(p-nitrophenylacetylene) was the detector. Other polymers showed similar behavior. For example, poly(ethynylcarborane), considered to be an electron acceptor also showed a change in electrical conductance when exposed to ammonia, while poly(ethynylpyridine) and poly(ethylidenepyridazine) responded to carbon monoxide. However, for "fire gases" (gases from smoldering cotton), poly(ethynylferrocene) was the most responsive. Thus, the concept of polymers with different electronegativities forming charge-transfer complexes with different gases was found to be operable

    Semiconducting polymers for gas detection

    Get PDF
    Conjugated polyenes, and polyesters containing phthalocyanine in their backbone, were synthesized. These polymers were characterized by chemical analysis, thermogravimetric analysis, spectral analysis, and X-ray diffraction studies for crystallinity, as well as for their film-forming capability and gas/polymer interactions. Most of the polymers were relatively insensitive to water vapor up to 50 percent relative humidity, but the polyester/phthalocyanine (iron) polymer was relatively insensitive up to 100 percent RH. On the other hand, poly(p-dimethylaminophenylacetylene) was too conductive at 100 percent RH. Of the gases tested, the only ones that gave any evidence of interacting with the polymers were SO2, NOx, HCN and NH3. Poly(imidazole)/thiophene responded to each of these gases at all relative humidities, while the other polymers gave varying response, depending upon the RH. Thus, since most of these gases were electron-accepting, the electron-donating character of poly(imidazole)/thiophene substantiates the concept of electronegativity being the operating principle for interaction effects. Of the six polymers prepared, poly(imidazole)/thiophene first showed a very good response to smoldering cotton, but it later became nonresponsive; presumably due to oxidation effects

    Utilizing the history of accounting to improve communication skills

    Get PDF
    During recent years, many comments have been made regarding the lack of good written and oral communication skills of entry level accountants. Accounting academicians realize that there is a weakness in the communications area. Many professors do not feel, however, that they have sufficient time to address the area of communication skills in the present undergraduate accounting courses because it is difficult just having time to cover technical accounting material. To increase accounting knowledge and at the same time improve communications skills were the objectives of an intersession course for accounting students which was offered between semesters as a one hour elective. The course met 3 hours a day for 5 days and was aimed at accounting juniors and seniors

    Dynamic sampling schemes for optimal noise learning under multiple nonsmooth constraints

    Full text link
    We consider the bilevel optimisation approach proposed by De Los Reyes, Sch\"onlieb (2013) for learning the optimal parameters in a Total Variation (TV) denoising model featuring for multiple noise distributions. In applications, the use of databases (dictionaries) allows an accurate estimation of the parameters, but reflects in high computational costs due to the size of the databases and to the nonsmooth nature of the PDE constraints. To overcome this computational barrier we propose an optimisation algorithm that by sampling dynamically from the set of constraints and using a quasi-Newton method, solves the problem accurately and in an efficient way

    Topological structures of adiabatic phase for multi-level quantum systems

    Full text link
    The topological properties of adiabatic gauge fields for multi-level (three-level in particular) quantum systems are studied in detail. Similar to the result that the adiabatic gauge field for SU(2) systems (e.g. two-level quantum system or angular momentum systems, etc) have a monopole structure, the curvature two-forms of the adiabatic holonomies for SU(3) three-level and SU(3) eight-level quantum systems are shown to have monopole-like (for all levels) or instanton-like (for the degenerate levels) structures.Comment: 15 pages, no figures. Accepted by J.Phys.

    Kant on Why Must I Keep My Promise?

    Get PDF
    This Article claims that for Kant a contractual obligation generates a universal right, meaning a right against everyone. Accordingly, a right to performance of a contract is more similar to a right in rem than to a right in personam, and failing to perform a contract is more similar to theft than to moral failure to do as promised. Part I shows that for Kant accepting a promise means taking possession of the promisor\u27s choice to commit an act in the future. Part II explains why it is possible to acquire someone else\u27s choice and how one does so in fact. Part III considers why the two parties\u27 bilateral will can legislate so that everyone recognizes the contractual claims it generates and thus why a court will enforce these claims in the civil social order. The Closing Comments explain why Kant says that the duty to keep one\u27s promise is a categorical imperative for which any further proof is impossible—indeed as impossible as it would be to prove that three lines are needed to construct a triangle. Our conclusion is that seeing contractual claims as Kant does resolves most of the modern debates over a grand unified theory of contract
    corecore