Consumer behaviour in agricultural direct marketing

Scandals in the food production industry have caused an uncertainty about quality and innocuousness of food for many consumers. This resulted in a strong risk perception of consumers at the point of sale. The direct marketing of products by farmers can be an important way to strengthen consumer confidence. In this contribution, buying behaviour is examined by an observation and a following interview. We develop an econometric model about the number of bought products and the proposition of marketing strategies which can be recommended to farmers involved in direct marketing.Consumer behaviour, direct marketing, observation, econometric model,

Analysis of space vehicle structures using the transfer-function concept

Analysis of large complex systems is accomplished by dividing it into suitable subsystems and determining the individual dynamical and vibrational responses. Frequency transfer functions then determine the vibrational response of the whole system

Pressure seal Patent

Pressure seals suitable for use in environmental test chamber

Landau level spectroscopy of ultrathin graphite layers

Far infrared transmission experiments are performed on ultrathin epitaxial graphite samples in a magnetic field. The observed cyclotron resonance-like and electron-positron-like transitions are in excellent agreement with the expectations of a single-particle model of Dirac fermions in graphene, with an effective velocity of c* = 1.03 x 10^6 m/s.Comment: 4 pages 4 figures Slight revisions following referees' comments. One figure modifie

Behavioristische Analyse des Verbraucherverhaltens in der landwirtschaftlichen Direktvermarktung

Scandals in the food industry have caused uncertainty about quality and innocuousness of food for many consumers. Direct marketing of products by farmers may be an important way to strengthen consumers´ confidence. In this article, the buyer is focus of the analysis. In contrast to other studies, the purchasing changes are examined. The objective is the development of an econometric model and the development of strategies for direct marketing.consumer behavior, direct marketing, econometric model, Consumer/Household Economics, Demand and Price Analysis, Institutional and Behavioral Economics,

Формирование подхода и методики, влияющих на процесс генерации стратегии предприятия

Цель исследования состоит в формировании нового подхода и методики, влияющих на процесс генерации стратегии предприятия

Tuning the electron-phonon coupling in multilayer graphene with magnetic fields

Magneto Raman scattering study of the E$_{2g}$ optical phonons in multi-layer epitaxial graphene grown on a carbon face of SiC are presented. At 4.2K in magnetic field up to 33 T, we observe a series of well pronounced avoided crossings each time the optically active inter Landau level transition is tuned in resonance with the E$_{2g}$ phonon excitation (at 196 meV). The width of the phonon Raman scattering response also shows pronounced variations and is enhanced in conditions of resonance. The experimental results are well reproduced by a model that gives directly the strength of the electron-phonon interaction.Comment: 4 pages, 3 figure

Resonant Excitation of Graphene K-Phonon and Intra-Landau-Level Excitons in Magneto-Optical Spectroscopy

Precise infrared magnetotransmission experiments have been performed in magnetic fields up to 32 T on a series of multilayer epitaxial graphene samples. We observe changes in the spectral features and broadening of the main cyclotron transition when the incoming photon energy is in resonance with the lowest Landau level separation and the energy of a K point optical phonon. We have developed a theory that explains and quantitatively reproduces the frequency and magnetic field dependence of the phenomenon as the absorption of a photon together with the simultaneous creation of an intervalley, intra-Landau-level exciton, and a K phonon.Comment: Main manuscript (5 pages); Supplementary Material (18 pages

Plasmon assisted transport through disordered array of quantum wires

Phononless plasmon assisted thermally activated transport through a long disordered array of finite length quantum wires is investigated analytically. Generically strong electron plasmon interaction in quantum wires results in a qualitative change of the temperature dependence of thermally activated resistance in comparison to phonon assisted transport. At high temperatures, the thermally activated resistance is determined by the Luttinger liquid interaction parameter of the wires.Comment: 7 pages, 1 figure, final version as publishe