Model-driven engineering approach to design and implementation of robot control system

In this paper we apply a model-driven engineering approach to designing domain-specific solutions for robot control system development. We present a case study of the complete process, including identification of the domain meta-model, graphical notation definition and source code generation for subsumption architecture -- a well-known example of robot control architecture. Our goal is to show that both the definition of the robot-control architecture and its supporting tools fits well into the typical workflow of model-driven engineering development.Comment: Presented at DSLRob 2011 (arXiv:cs/1212.3308

Laser-induced Precession of Magnetization in GaMnAs

We report on the photo-induced precession of the ferromagnetically coupled Mn spins in (Ga,Mn)As, which is observed even with no external magnetic field applied. We concentrate on various experimental aspects of the time-resolved magneto-optical Kerr effect (TR-MOKE) technique that can be used to clarify the origin of the detected signals. We show that the measured data typically consist of several different contributions, among which only the oscillatory signal is directly connected with the ferromagnetic order in the sample.Comment: 4 pages, 5 figure

Super-resolution provided by the arbitrarily strong superlinearity of the blackbody radiation

Blackbody radiation is a fundamental phenomenon in nature, and its explanation by Planck marks a cornerstone in the history of Physics. In this theoretical work, we show that the spectral radiance given by Planck's law is strongly superlinear with temperature, with an arbitrarily large local exponent for decreasing wavelengths. From that scaling analysis, we propose a new concept of super-resolved detection and imaging: if a focused beam of energy is scanned over an object that absorbs and linearly converts that energy into heat, a highly nonlinear thermal radiation response is generated, and its point spread function can be made arbitrarily smaller than the excitation beam focus. Based on a few practical scenarios, we propose to extend the notion of super-resolution beyond its current niche in microscopy to various kinds of excitation beams, a wide range of spatial scales, and a broader diversity of target objects

Development Tests of a Cryogenic Filter Wheel Assembly for the NIRCam Instrument

The James Webb Space Telescope is an infrared-optimized space telescope scheduled for launch in 201 3. Its 6.5-m diameter primary mirror will collect light from some of the first galaxies formed after the big bang. The Near Infrared camera (NIRCam) will detect the first light from these galaxies, provide the necessary tools for studying the formation of stars, aid in discovering planets around other stars, and adjust the wave front error on the primary mirror (Fig. 1). The instrument and its complement of mechanisms and optics will operate at a cryogenic temperature of 35 K. This paper describes tests and test results of the NIRCam Filter Wheel assembly prototype

The effects of use values, amenities and payments for public goods on farmland prices: Evidence from Poland*

The article contributes to the debate on how land prices are affected by production values, by farming subsidies and by environmental amenities. The authors carried out a comprehensive review of the literature on the actual determinants of land value and made an attempt to classify different approaches to this matter. Then they performed an empirical case study of the drivers of agricultural land values in a leading agricultural region of Poland. The aim of the study is to establish how the use values of land, amenities and policy payments contribute to land values in the Single Area Payment Scheme (SAPS), which operates in Poland. The study is based on a sample of 653 transactions during the years 2010–2013. A hierarchical regression (ML-IGLS method) was used, where the unobserved heterogeneity is attributed to the location-specific factors at different levels of analysis. Results indicate that the policy payments for public goods decapitalise the value of land, whereas the environmental amenities have a relatively strong influence on farmland prices

The judicial view of the relationship between land use and traffic

Thesis (M.U.P.)--Michigan State University. Dept. of Urban Planning and Landscape Architecture, 1960Includes bibliographical references (leaf 225

The significance of bromide in the Brust–Schiffrin synthesis of thiol protected gold nanoparticles

The mechanism of the two-phase Brust–Schiffrin synthesis of alkane thiol protected metal nanoparticles is known to be highly sensitive to the precursor species and reactant conditions. In this work X-ray absorption spectroscopy is used in conjunction with liquid/liquid electrochemistry to highlight the significance of Br⁻ in the reaction mechanism. The species [AuBr₄]⁻ is shown to be a preferable precursor in the Brust–Schiffrin method as it is more resistant to the formation of Au(I) thiolate species than [AuCl₄]⁻. Previous literature has demonstrated that avoidance of the Au(I) thiolate is critical to achieving a good yield of nanoparticles, as [Au(I)X₂]⁻ species are more readily reduced by NaBH₄. We propose that the observed behavior of [AuBr₄]⁻ species described herein explains the discrepancies in reported behavior present in the literature to date. This new mechanistic understanding should enable nanoparticle synthesis with a higher yield and reduce particle size polydispersity

An empirical investigation into regional housing market synchronisation in Poland

Objective: The article aims to investigate the synchronisation of metropolitan house prices from 2000 to 2020 based on novel empirical data. We applied several econometric procedures to address the cyclicity of housing markets. Research Design & Methods: Using a unique dataset of over four million offers, we investigated the synchronisation of 18 regional housing markets in Poland from 2000 to 2020. The study used spectral analysis. Findings: The study proved the strong synchronisation of housing cycles in Polish regional housing markets. Moreover, when the cycle amplitude was considered, the econometric analysis showed regional disparities in the cyclical behaviour of housing prices. According to the research, Lublin and Opole had the lowest housing cycle magnitude, and Gdańsk, Katowice, and Łódź had the largest magnitude. Implications & Recommendations: The information about housing cycles has important policy implications. Housing wealth effects generated by cyclical house prices may be more persistent than financial wealth effects. Consequently, they may substantially affect consumption dynamics. Therefore, precisely identifying market cycles and differences in cycle synchronisation is vital when constructing an effective, selective, and well-timed monetary policy. Contribution & Value Added: The research narrows the knowledge gap on the synchronisation of housing markets in an emerging economic environment. With their distinct institutional structures, Eastern European countries have little knowledge of this issue.      

Auf die Typen kommt es an. Eine empirische Analyse studentischer Spielertypen.

Aktuell streben Hochschulen nach Lösungen zur Senkung von Studienabbruchquoten, Anregung der Studienmotivation und Optimierung von Studieneingangsphasen. Diese hochschulpolitischen Ziele sind von großer Bedeutung für den demografischen Wandel und den steigenden Bedarf an hochqualifizierten Fachkräften. Viele verschiedene Konzepte versuchen diesen Zielen Rechnung zu tragen. Auch die Technische Universität Dresden (TUD) hat mit ihrem Gesamtkonzept zur Unterstützung des Studienerfolgs verschiedene Teilprojekte ins Leben gerufen. Eines davon ist das Studienassistenzsystem gOPAL, welches Studienanfängern der TUD beim Aufbau von Orientierungswissen und Kompetenzen der Studierfähigkeit unterstützt. [... aus dem Text