3D Directional Coupler for Impulse UWB: 3D Electromagnetic Simulation and Prototyping

The AWS Group developed a UWB radar and UWB transceiver for indoor people location and tracking. A radar concept has been developed. This paper will describe step by step the realization of a UWB directional coupler with a novel 3-D architecture. This paper gives a walkthrough of our design of the 3-D directional coupler

The Effects of Tooth Winding Usage

The article deals with tooth windings used forpermanent magnet machinery, their analyses and aftereffectsof their usage. The article discusses basic tooth windingproperties, possibilities of examination of generatedmagnetic field and it studies the impact on the machinecharacteristics. A case study of a designed traction machineequipped with the tooth winding is presented for the purposeof result comparison

Hydraulic Conditions in Foul Water Stacks

Foul water stacks are a separate chapter in the design of sanitary installations, especially in high-rise buildings. The problematic part is the complicated hydraulic conditions in the stacks, which lead to high values of negative pressure and overpressure. Exceeding the maximum negative pressure values leads to the extraction of water from the traps, which causes the spread of annoying smells in the interior. Another problematic part is the high hydraulic jumps caused by a sudden change in the velocity of water in the stack, especially above the change in the direction of stacks. Such sudden changes in velocity cause excessive vibrations and noise that spread from stacks to the building structures and surrounding areas. The contribution deals with the issue of hydraulic conditions in the flow of foul water in stacks, assessment of the maximum values of negative pressure and overpressure, technical solutions that ensure optimal water flow in the drainage systems of buildings. Based on measurements that were performed in companies abroad, the authors prepared graphs of pressure fluctuations in stacks for selected boundary conditions

MPPT tracker S.M.K.B. edition

PFC del programa Erasmus elaborat a Ecole Nationale d'Ingénieurs de TarbesSolarcom is a French company that is dedicated to supply, through solar energy, remote telecommunication devices such as repeaters of fiber optics or phone antennas. The project is commissioned by Solarcom for the EPS work team from ENIT, and consists in realize the design of a voltage regulator, based on maximum power point tracking algorithms (MPPT), to control the operating point of the power source formed by an array of photovoltaic panels, thus improving their performance and make effective control over the method and charge status of the battery. First is done a management, is explained in the first chapter, how is managed the different resources during the time to finish the project in the deadline. In the second chapter is made a little State of art to know how is the actual market in this area ant to decide the specifications and price target. To make the design of the device is necessary to model the physical environment in which the voltage regulator work to validate step by step, through simulation, different algorithms and components which will be based regulator. The software chosen to realize the mathematical models of the different physical devices on which operation of voltage regulator depends is MATLAB 2010b, the models were made by modeling and simulation tool SIMULINK. The hardware design of the device is implemented in Solid Works, and in this chapter is explained every component that is inside the device, how it function and why it’s selected. In this chapter is showed all necessary to build it physically. In the software design chapter is explained every function used to make the regulator functional and implemented it in microcontroller, the code is made in C++ language by Code Warrior for Mororolla

Revisiting the ‘Informational City’: Space of Flows, Polycentricity and the Geography of Knowledge-Intensive Business Services in the Emerging Global City-Region of Dublin

Revisiting the ‘informational city’: space of flows, polycentricity and the geography of knowledge-intensive business services in the emerging global city-region of Dublin, Regional Studies. The paper engages with the notion that the new spatial logic, underpinned by information and communication technology (ICT) and the ‘space of flows’, manifests itself in the form of ‘informational cities’ described as multinuclear spatial structures or polycentric city-regions in the knowledge-based economy. Focusing on the geography of knowledge-intensive business services (KIBS), the paper argues that there is little evidence of such polycentric pattern emerging within the Greater Dublin Region, Ireland. The exploration of factors underpinning weak decentralization tendencies of KIBS opens for reconsideration the concept of the ‘informational city’

Revisiting the ‘Informational City’: Space of Flows, Polycentricity and the Geography of Knowledge-Intensive Business Services in the Emerging Global City-Region of Dublin

Revisiting the ‘informational city’: space of flows, polycentricity and the geography of knowledge-intensive business services in the emerging global city-region of Dublin, Regional Studies. The paper engages with the notion that the new spatial logic, underpinned by information and communication technology (ICT) and the ‘space of flows’, manifests itself in the form of ‘informational cities’ described as multinuclear spatial structures or polycentric city-regions in the knowledge-based economy. Focusing on the geography of knowledge-intensive business services (KIBS), the paper argues that there is little evidence of such polycentric pattern emerging within the Greater Dublin Region, Ireland. The exploration of factors underpinning weak decentralization tendencies of KIBS opens for reconsideration the concept of the ‘informational city’

Regional dimensions of the knowledge economy : implications for the "new Europe"

This thesis examines the implications of the alleged rise of the `knowledge economy' for regional economic change in Europe. In particular, it is concerned with `postindustrial' trajectories of less-favoured regions, in both the Western and Eastern parts of the `New Europe'. In doing so, the thesis critically engages with the `new regionalism' economic geography approaches that draw on institutional/evolutionary economics, and on the `knowledge economy' or 'learning economy' discourses. These approaches invariably identify localised forms of knowledge production and learning and various supporting institutions as key factors behind regional prosperity. Considered as the most important organisational units of contemporary global knowledge-intensive capitalism, economically successful regions are understood as `learning regions' acting as collectors and repositories of knowledge, and displaying the ability to learn and innovate, while being supported by regional `institutional thickness'. Less-favoured regions are themselves claimed to have a capacity to improve their own economic fortunes by becoming `learning regions'. These claims are exposed to a theoretical scrutiny that reveals serious conceptual weaknesses in the `knowledge economy' and `learning region' paradigms and the thesis suggests an alternative conceptualisation of regional economic change. This alternative conceptualisation places emphasis on the `socio-spatial divisions of labour' and the accompanying `socio-spatial value chains/networks' as a useful prism through which increasingly uneven regional development in Europe can be understood. The case studies of two former industrial region-states are then presented - one in the `Western' periphery (Scotland) and one in the `Eastern' post-socialist periphery (Slovakia) of the `New Europe' - both attempting a transformation to the high value-added `knowledge-based' economy. The empirical evidence supports the view that, although institutions can play an important role in economic development of regions, their room for manoeuvre is nevertheless significantly constrained by their own historical legacies and the wider neo-liberal political economy.EThOS - Electronic Theses Online ServiceBritish Council : Foreign and Commonwealth Office : Universities UK : CURDS/Geography Department of the Newcastle upon Tyne University (teaching assistantship) : European Commission (ACE Phare grants P97-9231-S and P98-2056-S)GBUnited Kingdo

Predictive Methods in Cyber Defense: Current Experience and Research Challenges

Predictive analysis allows next-generation cyber defense that is more proactive than current approaches based on intrusion detection. In this paper, we discuss various aspects of predictive methods in cyber defense and illustrate them on three examples of recent approaches. The first approach uses data mining to extract frequent attack scenarios and uses them to project ongoing cyberattacks. The second approach uses a dynamic network entity reputation score to predict malicious actors. The third approach uses time series analysis to forecast attack rates in the network. This paper presents a unique evaluation of the three distinct methods in a common environment of an intrusion detection alert sharing platform, which allows for a comparison of the approaches and illustrates the capabilities of predictive analysis for current and future research and cybersecurity operations. Our experiments show that all three methods achieved a sufficient technology readiness level for experimental deployment in an operational setting with promising accuracy and usability. Namely prediction and projection methods, despite their differences, are highly usable for predictive blacklisting, the first provides a more detailed output, and the second is more extensible. Network security situation forecasting is lightweight and displays very high accuracy, but does not provide details on predicted events

Novel principles of gamma-retroviral insertional transcription activation in murine leukemia virus-induced end-stage tumors

BACKGROUND: Insertional mutagenesis screens of retrovirus-induced mouse tumors have proven valuable in human cancer research and for understanding adverse effects of retroviral-based gene therapies. In previous studies, the assignment of mouse genes to individual retroviral integration sites has been based on close proximity and expression patterns of annotated genes at target positions in the genome. We here employed next-generation RNA sequencing to map retroviral-mouse chimeric junctions genome-wide, and to identify local patterns of transcription activation in T-lymphomas induced by the murine leukemia gamma-retrovirus SL3-3. Moreover, to determine epigenetic integration preferences underlying long-range gene activation by retroviruses, the colocalization propensity with common epigenetic enhancer markers (H3K4Me1 and H3K27Ac) of 6,117 integrations derived from end-stage tumors of more than 2,000 mice was examined. RESULTS: We detected several novel mechanisms of retroviral insertional mutagenesis: bidirectional activation of mouse transcripts on opposite sides of a provirus including transcription of unannotated mouse sequence; sense/antisense-type activation of genes located on opposite DNA strands; tandem-type activation of distal genes that are positioned adjacently on the same DNA strand; activation of genes that are not the direct integration targets; combination-type insertional mutagenesis, in which enhancer activation, alternative chimeric splicing and retroviral promoter insertion are induced by a single retrovirus. We also show that irrespective of the distance to transcription start sites, the far majority of retroviruses in end-stage tumors colocalize with H3K4Me1 and H3K27Ac-enriched regions in murine lymphoid tissues. CONCLUSIONS: We expose novel retrovirus-induced host transcription activation patterns that reach beyond a single and nearest annotated gene target. Awareness of this previously undescribed layer of complexity may prove important for elucidation of adverse effects in retroviral-based gene therapies. We also show that wild-type gamma-retroviruses are frequently positioned at enhancers, suggesting that integration into regulatory regions is specific and also subject to positive selection for sustaining long-range gene activation in end-stage tumors. Altogether, this study should prove useful for extrapolating adverse outcomes of retroviral vector therapies, and for understanding fundamental cellular regulatory principles and retroviral biology