210 research outputs found

    Exact thermodynamics of a planar array of Ginzburg-Landau chains with nn and nnn interactions

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    The exact expression of the free energy of a planar array of a Ginzburg-Landau chains with nn and nnn interaction is obtained. The critical behaviour of the specific heat is not qualitatively modified by taking into account the nnn interaction

    Robust Dense Mapping for Large-Scale Dynamic Environments

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    We present a stereo-based dense mapping algorithm for large-scale dynamic urban environments. In contrast to other existing methods, we simultaneously reconstruct the static background, the moving objects, and the potentially moving but currently stationary objects separately, which is desirable for high-level mobile robotic tasks such as path planning in crowded environments. We use both instance-aware semantic segmentation and sparse scene flow to classify objects as either background, moving, or potentially moving, thereby ensuring that the system is able to model objects with the potential to transition from static to dynamic, such as parked cars. Given camera poses estimated from visual odometry, both the background and the (potentially) moving objects are reconstructed separately by fusing the depth maps computed from the stereo input. In addition to visual odometry, sparse scene flow is also used to estimate the 3D motions of the detected moving objects, in order to reconstruct them accurately. A map pruning technique is further developed to improve reconstruction accuracy and reduce memory consumption, leading to increased scalability. We evaluate our system thoroughly on the well-known KITTI dataset. Our system is capable of running on a PC at approximately 2.5Hz, with the primary bottleneck being the instance-aware semantic segmentation, which is a limitation we hope to address in future work. The source code is available from the project website (http://andreibarsan.github.io/dynslam).Comment: Presented at IEEE International Conference on Robotics and Automation (ICRA), 201

    FINANCIAL DIAGNOSIS OF A COMPANY’S ACTIVITIES

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    Financial diagnosis consists of a number of instruments and methods which help to evaluate a company’s financial situation and performances. The financial diagnosis identifies the favourable and unfavourable factors which will affect the company’s future activity. The purpose of financial diagnosis is to draw a comparison with similar companies, in order to establish risk, profitability, and value parameters, by estimating the cost of capital (discount rate). The financial diagnosis helps to appreciate the past and present financial situation, and based on them to make projections for the future

    Open Access to Information. Free Licenses

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    In order to clarify perspectives that go beyond the limitations of copyright law, Law no. 8/1996 on copyright and neighbouring rights, we will address below several concepts regarding free licenses, the context in which creative licenses emerged, how to use these licenses

    Sicurezza alimentare tra commercio internazionale e land grabbing

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    Food security is one of the most complex problems that the world is facing today. This paper discusses the role of international trade in food security and analyzes whether there is a real option to promote or attract land investments, alongside domestic production and international trade for the nations touched by food insecurity. Considering food security as a common purpose for all nations, independently of their level of development or political ideologies, the research concludes that serious cooperation within international agricultural trade negotiations represents the main step towards resolving the most important world challenges such as achieving global food security alongside “Green Growth”. International trade is connected with economic development: free trade brings on medium and long term economic growth. Fighting against poverty requires efficient economic policies and, due to the high degree of economic integration reached by the international economy, this is possible only if governments cooperate with each other and with international organizations, avoiding protectionism

    Microfabricated gas sensor systems with sensitive nanocrystalline metal-oxide films

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    This article gives an overview on recent developments in metal-oxide-based gas sensor systems, in particular on nanocrystalline oxide materials deposited on modern, state-of-the-art sensor platforms fabricated in microtechnology. First, metal-oxide-based gas sensors are introduced, and the underlying principles and fundamentals of the gas sensing process are laid out. In the second part, the different deposition methods, such as evaporation, sputtering, sol-gel techniques, aerosol methods, and screen-printing, and their applicability to micro-scale substrates are discussed in terms of their deposition precision, the achievable layer thickness, as well as with regard to the possibility to use pre-processed materials. In the third part, microsensor platforms and, in particular, semiconductor- and microelectronics-based sensor platforms, which have been fabricated in, e.g., standard CMOS-technology (CMOS: complementary metal-oxide semiconductor), are briefly reviewed. The use of such microfabricated sensor platforms inevitably imposes constraints, such as temperature limits, on the applied nanomaterial processing and deposition methods. These limitations are discussed and work-arounds are described. Additionally, monolithic sensor systems are presented that combine microtransducers or microhotplates, which are coated with nanomaterials, with the necessary control and driving electronics on a single chip. The most advanced of such systems are standalone units that can be directly connected to a computer via a digital interfac

    Sugar Beet (Beta vulgaris L.) Yields and Potential for Bioethanol Production under Irrigation Regime

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    The current study was carried out to analyse three sugar beet genotypes regarding to the economic yield and the potential to produce bioethanol, under the influence of furrow irrigation regime in specific conditions of Transylvanian Plain, North-West Romania. The research factors, genotype (‘Leila’, ‘Clementina’ and ‘Libero’) and irrigation regime were studied within a polyfactorial experimental design. The results obtained indicated that in specific climatic conditions of Transylvanian Plain, ‘Libero’ genotype had a great performance and produced the highest yields. The average production of ‘Libero’ genotype was superior than ‘Clementina’ and ‘Leila’ varieties, both in irrigated and non-irrigated conditions, as it follows: 38.98 t ha–1, respectively, 52.72 t ha–1 in the first year of research; 47.63 t ha–1, respectively, 59.73 t ha–1 (in the second year); 2014-60.87 t ha–1, respectively, 74.43 t ha–1 (in the third year). Moreover, the production increased with 11.5% under irrigated conditions for all the studied genotypes. The results also revealed the positive influence of the irrigation regime on the qualitative parameters of the bioethanol (ethanol, higher saturated monoalcohols, methanol, water, inorganic chloride, cooper, phosphorous, sulphur etc.) indicating that the obtained bioethanol might be a viable alternative for fossil fuels

    Conceptual Approaches of Industry 5.0. Correlative Elements with Supply Chain Management 5.0

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    The continuous evolution of civilization in the world, has progressively determined the change of consumer options for different types of products in terms of complexity, which has progressively led to several industrial revolutions. Therefore, in the current stage, the transition to a superior revolution of "Industry 4.0" takes place, where, from a digital point of view, the emphasis was on the devices related to the connection to the so-called Internet of Things. In the conditions mentioned, both the industry and the logistics have developed in stages, revealing today projections and implementations adequate to the configurations of the digital level - 5.0. At this stage, a special emphasis will be systematically placed on research and innovation as essential factors in the process of making that European industry sustainable, resilient and focused on the human factor and interest. The requirements of the information society, based on knowledge are obviously found in the specific coordinates of "Industry 5.0" and in the determining functions of "Supply Chain Management 5.0". In this article we set out to briefly address the importance and role of the issue of "Industry 5.0", but also some correlations with "Supply Chain Management 5.0", given the current and future economic challenges
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