Miracle-dz/UniFAR-FTUs huggingface dataset:
Base Station Antenna with Enhanced Cross Polarization Discrimination Performance by Using Horizontal Meandered Dipole and Vertical Parasitic Elements

This study is related with the design of a ± 45° dual polarized base station antenna with improved cross-polarization discrimination (XPD) values. Parasitic elements are added to antenna design formed by orthogonal two compact meandered dipole above ground plane. The antenna designed with CST Microwave Studio program has VSWR ≤ 2 within 1.71-2.69 GHz frequency band, which covers GSM 1800/3G/LTE bands. The antenna has minimum of 0 dBi gain in the beamwidth of 120° ( 60°) at azimuth plane (ϕ = 0°) along the band, and XPD values being minimum of 2 dB at 1.71-2.4 GHz for 60° without parasitic elements are improved to 10 dB with parasitic elements. This design initially had two horizontal straight monopoles on the ground plane perpendicular to each other. Afterwards, antenna with microstrip balun feed applied but the XPD values were not appropriate to expected results. Because of that, by using image theory, vertical parasitic elements were added to get appropriate XPD values. Later, meandered structure used to make antenna smaller. Finally, according to base station applications, antenna frequencies optimized to 1.71 GHz and 2.69 GHz. The designed and optimized antenna produced and measured in laboratory environment. Return losses for port 1 and port 2 are measured above the 10 dB and isolation between the port 1 and port 2 are measured above the 20 dB. In addition, the maximum gain values are measured between 3 dB and 7 dB in 1.71 GHz and 2.69 GHz frequency band. Finally, XPD values are measured more than 10 dB in bandwidth.
EFFECTS OF MESOPOROUS SILICA ON PMMA / SBA-15 COMPOSITES PREPARED BY EMULSION POLYMERIZATION

PMMA composites were prepared through in-situ emulsion polymerization of methyl methacrylate in the presence of mesoporous silica SBA-15 with different morphologies. For composites containing rod-like mesoporous silica, the most decomposition temperature, the storage modulus, and glass transition temperature for the PMMA composite increased significantly, whereas the composite containing the mesoporous silica SBA-15 with spherelike exhibited less improvement in comparison to pure PMMA. All the composites with mesoporous silica displayed higher mechanical properties in the high temperature. The introducing of mesoporous silica to PMMA decreased the dielectric constants of the polymer composites.
Absolute interferometry for a flexible in-process robot calibration

Highly individualized and customized products with dynamic lifecycles increase the need for flexible and reconfigurable assembly systems. Industrial robots are a key technology for future production systems especially for large scale components. The trade off between increasing work piece dimensions on the one hand and increasing tolerance requirements on the other, that are in some cases comparable to micro assembly systems, has to be solved by flexible and precise manufacturing and fixtureless assembly processes. 1. Assembly of large scale parts The achievable accuracy of a robot based assembly system is influenced by the weight of work pieces and end-effectors, process forces, gravitation and temperature of the surroundings. Manufacturing, handling and assembling processes of large scale parts often take place in production sites with harsh environmental conditions. Temperature changes are influencing the handling kinematics as well as the work piece geometry[1]. The deflections lead to inaccuracies during the handling and assembling process that complicate the compliance with the required tolerances[2]. It is possible to improve the positioning accuracy of the robot kinematics by the use of Global Reference Systems (GRS). The GRS defines a communication network for the exchange of information such as the position of manipulating machinery and nonmanipulating devices of a production system. For manipulating machinery, largevolume measurement systems [3,4] such as indoor-GPS (iGPS) and laser trackers are especially suitable [5,6,7]. The integration of the measurement technologies is expensive and the measurement uncertainty is generally >100μm already without the
Stability of Extracted Cycles: A Case of Adjustment Factors in Quarterly Data

This paper studies stability of cyclical components extracted from economic time series. We examine the cyclical components extracted with the Butterworth filter in Gomez (2001) and Pollock (2000), the Hammingwindowed filter in Iacobucci and Noullez (2005), and the ChristianoFitzgerald (CF) filter in Christiano and Fitzgerald (2003). We use two types of stability diagnostics discussed in Findley et al. (1998): sliding spans and revision histories. The main findings are as follows. First, the tangentbased Butterworth filtering produces more stable adjustment components than other three filtering methods. Second, the estimates are very stable in the middle range of the series. Finally, as a rule of thumb, we should use series longer than 120 sample points for filtering in practice so that data revision would least affect subsequent analyses.
Introducing temporal logic to computer science*

—Computing uses the general operating model, that data is delivered to the input of the processing element, and after some processing time, the resulting data is delivered to some store. In his classic publication, von Neumann assumed that ”in the actually intended vacuum tube interpretation . the conduction [transfer] times may indeed by neglected”. Since that time, this paradigm is followed, independently whether the data are delivered via direct wiring or using packages over networks, and whether the processing element is digital/analog electronic component, FPGA, biological/technical neuron or quantum processor, although von Neumann warned: ”the conduction [transfer] times . can be longer than the synaptic delays [processing time], hence our procedure of neglecting them aside of τ [processing time] would be unsound . ” He has not foreseen the present technological conditions, however, he made sure ”It would take an ultra high frequency device – τ ≈ 10 − 8 seconds or less – to vitiate this argument”. That is, for the today’s GHz processors (and especially, using them in extreme-size supercomputers or in systems mimicking biological operation), the classic paradigm is ” unsound ”. In computing, everything is about time, from producing faster processors, interconnections and memories, to providing supercomputers with higher payload performance or reducing the weeks-long training time of Artiﬁcial Neural Networks. Despite this, in the commonly used classical computing paradigm, the time has no explicit role, in the sense that only the logical dependence of the operations is considered, but not that the physical implementation of the components of computing systems converts that logical dependence to temporal dependence .
EARTH PHYSICS ESTIMATION OF SITE EFFECTS IN THE EASTERN PART OF ROMANIA ON THE BASIS OF H/V RATIOS OF S AND CODA WAVES GENERATED BY VRANCEA INTERMEDIATE-DEPTH EARTHQUAKES

The purpose of our study is to investigate the ground motion characteristics in 15 sites located in the Eastern part of Romania by applying the H/V spectral ratio method to the data (S and coda waves) recorded during the CALIXTO’99 tomography experiment. The results show no significant differences as regarding the resonant frequencies of the spectral ratios computed for the two types of waves, while the level of the amplification for S-wave is slightly higher than for coda waves. Only for two sites, located on thick Quaternary deposits, the amplification obtained from S-wave is larger by a factor of 2 than the amplification obtained from coda waves at low frequencies. In the studied locations the ground motion amplification varies by a factor of 2 to nearly 6 over the frequency range of 0.5 to 10-12 Hz.
Adaptive Post Recognition

Blogs, news portal and discussion forums are of high interest for today's social interaction research. But the automatic information extraction from the raw html page of those media channels is still a well-known problem. We introduce a novel approach to infer website templates based on the syndication format of blogs and news portals, called feeds. In comparison to related approaches that infer templates by clustering generic pages, we do not rely on a manual annotated training set. Instead, we use the feeds and their linked articles as training set to identify characteristic XPaths. Those paths identify the exact article content and article properties like title, author and publishing date. Further, we can use those paths to detect article pages that are no longer linked from feeds. We show the precision gain by comparing the article content extraction with an alternative approach e.g. boilerplate.
CNT-ALUMINUM METAL MATRIX NANOCOMPOSITES

Carbon Nanotubes-Aluminum (CNT-Al) agglomerates were synthesized by DC arc discharge method under argon/acetone mixed atmosphere. Synthesis was performed by arc plasma on high pure graphite rod, filled by aluminum powder as anode and aluminum plate as cathode. Discharge conditions of 85 A and 20 V were used at a pressure range of 0.5 to 1 MPa. This new method allows obtaining nanotubes agglomerated with aluminum. Metal matrix composites were produced with this agglomerates dispersed in an aluminum matrix. Mixtures of CNT-Al agglomerates, 0.5 and 1.0 wt%, with Al powders were pressed and sintered at 625 oC. A poor dispersion of the agglomerates in the metal matrix was obtained. For both compositions large clusters were observed at aluminum grain boundary junctions. Although the poor dispersion of CNT in the composite, a 40% increase in hardness is obtained in the 1.0 wt% CNT agglomerates composite.
Role of polar extracts from two quinoa varieties in prevention of steatohepatitis and cardiovascular diseases and improving glucose tolerance in rats.

Introduction: Steatohepatitis, which is the deposition of fat in the liver with inflammation and starting of necrosis, can induce cardiovascular diseases (CVDs). The aim of this research was to study the preventive effects of steatohepatitis and CVD by ethanol extract of two quinoa varieties (quinoa 1 and hualhuas) in rats. Methods: Phenolic and flavonoid compounds were determined in the extracts utilizing colorimetric and high-performance liquid chromatography techniques. The 2,2-diphenyl-1-picryl-hydrazil (DPPH) scavenging activity was assessed for the extracts. Rats were divided into four groups, the first group was fed on a balanced diet (negative control), and other groups consumed a high fructose-fat diet (HFFD) to induce steatohepatitis and CVD. The second group served as a positive control; however, the third and fourth groups were treated by ethanol extract of quinoa 1 and hualhuas, respectively. Different biochemical changes, as well as liver and heart histopathology, were followed. Results: Results showed significant elevation in liver lipids, plasma malondialdehyde, total cholesterol (T-C), triglycerides and low-density lipoprotein cholesterol with reduction of high-density lipoprotein cholesterol (HDL-C) and total antioxidant as well as a significant increase in T-C/HDL-C in control positive group (P < 0.05) compared to control negative group. Plasma parameters and liver lipids were improved by the extracts; hualhuas was superior concerning the effect on lipid while quinoa 1 was more efficient in reducing oxidative stress. The oral glucose tolerance curve and the histopathology of the liver and heart tissues were improved by both extracts. Total phenolic and DPPH scavenging activity were higher in quinoa 1 than hualhuas. Protocatechuic and rutin were the major identified phenolic acid and flavonoid compounds, respectively in the extracts. Conclusion: Quinoa extracts are able to prevent the progression of steatohepatitis and CVD, and might be beneficial in patients with such diseases.
MOTIVES FOR POACHING IN SEYCHELLES MPAS

Motives for non-compliance with no-take regulations in the eight marine protected areas (MPAs) of the Inner Islands of the Republic of Seychelles were investigated using semistructured interviews with fishers. Discriminant function analysis (DFA) of responses to questions was used to classify known poachers and non-poachers to an accuracy of 94%. This classification procedure can be used to predict the poaching status of fishers of unknown poaching status, based on their responses to a standard set of questions. Although these results are preliminary, they suggest that DFA represents a powerful tool in the investigation of sensitive issues such as illegal fishing, as its use of responses to a combination of relatively innocuous questions allows the prediction of poaching activity to a high level of accuracy without requiring a direct admission to poaching. Qualitative data also presented here support these results and offer further insights into the biological, economic and socio-political motives for poaching.
QUATERNARY EVOLUTION OF RIO ITABAPOANA COASTAL PLAIN AND ITS RELATION WITH VULNERABILITY

Quaternary evolution from Rio Itabapoana Coastal Plain is studied with the perspective of Geomorphology and field work. Seven stations were sampled, being one on the beach, where a profile was made comprising 3 ancient beach ridges. Sixteen samples were statistically analyzed, and morphoscopy and faciology were determined. As Holocenic beach-ridges are evident at the northern part of the river, it apparently stayed as a barrier-lagoon system for a long period before reaching the coast. When it happened, southward currents were more intense. The article finishes with a Quaternary evolution scheme regarding sea-level fluctuations. INTRODUCTION According to MARTIN et al. (1996), the state of Espírito Santo has two geomorphological units composing the landward boundaries separating the coastal plain from inland: a Tertiary plateau (Barreiras Formation) and another composed of crystalline rocks. Presidente Kennedy is located at the southern border of Espírito Santo, where this Plateau is in contact with the Quaternary deposits. The municipality is classified within the Sector 6, with a very important Quaternary deposit (MARTIN et al., 1996). The objective of the present work is to study the characteristics of Rio Itabapoana Coastal plain Quaternary evolution in comparison with other rivers in Brazil and correlate it with its vulnerability to inundation. MATERIAL AND METHODS Aerial photographs were first obtained from Instituto Estadual do Meio Ambiente (IEMA, 2008) and from RADAM survey (1970’s) in order to study the coastal plain evolution through Geomorphology and also to monitor morphological changes over time. After the definition of the coastal plain features a field survey was done, collecting subsuperficial samples for each geomorphological feature, in a total of five. One last station was surveyed with 3 samples (current riverbed). On the beach, a topographical profile was made, comprising 500 meters (3 ancient beach ridges), and one sample was collected, at the beach face. XIII Congresso da Associação Brasileira de Estudos do Quaternário ABEQUA III Encontro do Quaternário Sulamericano XIII ABEQUA Congress The South American Quaternary: Challenges and Perspectives
Ranking Blogs based on Topic Consistency

Current ranking algorithms, such as PageRank, Technorati authority, and BI-Impact, favor blogs that report on a diversity of topics since those attract a large audience and thus more visitors, links, and comments. One example is the spreeblick.com blog, which offers articles on politics, society, and IT. On the other side, niche blogs with a very specific topic only attract a small audience and thus have only a small reach. Niche blogs are blogs like telemedicus.info, which only publishes articles on privacy and copyright. This results in a low ranking from today’s blog retrieval systems. This thesis argues that the consistency of a blog, i.e. how focused an author reports on a single topic, is a sign for expert knowledge. To find these blogs is particular important for other domain experts to identify blogs that they would like to follow and stay in active contact. To ease the retrieval of expert blogs, i.e. to separate them from the mass of blogs that report on random topics, a metric for blogs based on topic consistency is introduced. The consistency ranking is based on four different aspects: (1) intra-post, (2) inter-post, (3) intra-blog, and (4) inter-blog consistency. By evaluating the metric with a test data set of 12,000 crawled blogs, the plausibility of this approach is demonstrated.
PRINCIPAL COMPONENT ANALYSIS OF RURAL GROUNDWATER QUALITY OF BENUE STATE, NIGERIA

Journal of Environmental Hydrology Volume 21 Paper 12 October 2013 1 Groundwater quality in rural communities of Benue State, Nigeria is assessed using principal component analytical techniques. Water samples were collected from 26 rural community boreholes of Benue State in the month of October being the rainy season. Physicochemical concentrations in boreholes as it affects the quality of groundwater is analyzed using both field and laboratory techniques as prescribed in the standard methods for water examination and reported based on the WHO drinking water guidelines. The result was subjected to correlation and principal component analysis(PCA). The PCA shows that groundwater quality in the study area is influenced by geology of the environment, mineralistion in soil and rocks, effect of agricultural landuses, effect of the materials used in borehole construction, and influence of seasons.It is recommended that rural groundwater developers should make exploitation of good quality a top priority as provision of polluted water will be counterproductive with all its attendant health hazards. PRINCIPAL COMPONENT ANALYSIS OF RURAL GROUNDWATER QUALITY OF BENUE STATE, NIGERIA
Extensive accumulation of rare earth elements in estuarine sediments affected by leaching of acid sulfate soils

1) Department of Biology and Environmental Science, Linnaeus University, SE-39182 Kalmar, Sweden (*corresponding author’s e-mail: mats.astrom@lnu.se) 2) Geological Survey of Finland (GTK), PO Box 96, FI-02151 Espoo, Finland 3) Abo Akademi University, Department of Geology, FI-20500 Åbo, Finland 4) Southern Cross GeoScience, Southern Cross University, PO Box 157, Lismore, NSW 2480, Australia 5) Department of Earth Sciences, University of Gothenburg, SE-405 30 Gothenburg, Sweden
A Hybrid Dynamical-Statistical Downscaling 1 Technique , Part I : Development and Validation 2 of the Technique 3 4 5

5 Daniel B. Walton 6 Department of Atmospheric and Oceanic Sciences, 7 University of California, Los Angeles 8 9 Fengpeng Sun 10 Department of Atmospheric and Oceanic Sciences, 11 University of California, Los Angeles 12 13 Alex Hall 14 Department of Atmospheric and Oceanic Sciences, 15 University of California, Los Angeles 16 17 Scott Capps 18 Department of Atmospheric and Oceanic Sciences 19 University of California, Los Angeles 20 21
Quantifying Pore-scale Flow Processes with X-ray Microtomography

Introduction Pore-scale fluid distributions and their variation in time and space dictate continuum-scale properties, such as capillary-pressure relationships and relative permeability properties, which again control multiphase flow and contaminant transport in porous media. We need to make pore-scale or microscale measurements and achieve a basic comprehension of these processes to improve our understanding of these findings and subsequently upscale them to field scale. Thus, a fundamental understanding of flow and transport mechanisms in porous media can be achieved only by studying pore-scale processes. These mechanisms operating at the microscale cannot be measured with traditional techniques, which generally require insertion of a sensor at or near the region of interest. X-ray computed microtomography (CMT) overcomes this problem via the noninvasive observation of changing fluid-phase contents and solution concentrations. In the past three years, we have performed x-ray microtomographic work at the GeoSoilEnviro Consortium for Advanced Radiation Sources (GSECARS) sector at the APS to investigate the flow of fluid and gas phases in porous media under various experimental conditions to enhance our understanding of how these processes act at the pore scale. Some of the challenges that motivate us are to (1) investigate differences between static and dynamic flow phenomena; (2) quantify and therefore better understand the influence of interfacial properties, like surface area and curvature of gas-liquid interfaces, on flow and transport in porous media; and (3) provide accurate data sets for validation of pore-scale modeling approaches, such as network and Lattice-Boltzmann type numerical modeling. In this report, we present a few examples of images and the sort of quantitative information that can be obtained with the CMT technique.
IN VIVO ANTIMALARIAL ACTIVITY OF 1Sweetline,

Treatment of malarial infection has becoming extremely challenging due to widespread resistance of the parasite towards available antimalarial drugs. In the present study, we investigated the antimalarial activity of The antimalarial activities during early and established infections were evaluated suppressive test method. Different concentration of the crude extracts were orally administered screen for their antimalarial activities. The extracts significantly inhibited parasitemia dose dependently. The ethanolic extract of The test substance observed to be safe with no toxicity on the mice even at 30 ml/kg. Results showed that significantly improved the suppression of parasitemia. the use of antimalarial compounds can be isolated and tested against human malaria parasite in the future.
Location of the GLOF signatures in the Bhutan Himalayas

Through activities in mountains, climber and trekker frequently encounter with some kind of evidence of current environmental change due to the global warming. Typical episode of these evidences are changing vegetation, decreasing of snow covered areas and melting glaciers. Furthermore, since some lakes contribute to outburst flood (Glacial Lake Outburst Flood. GLOF), the birth and growth of lakes in front of glacier tongues are alarming episodes in the current environmental transition in the high mountains. However, the frequency of GLOF occurrences is practically still unknown, because major outburst events which caused severe damage are rare phenomenon and their records have been documented for only the half a century. In this paper, I introduce case examples of outburst event and temporal tendency of the events in the eastern Himalayas. Further information and photographs especially for the Bhutan Himalayas are available from a source article in titled “Glacial Lake Outburst Events in the Bhutan Himalayas” (J. Komori, T. Koike, T. Yamanokuchi and P. Tshering, in the 2012 issue of Global Environmental Research. Vol. 16, p. 59 – 70. http://www.airies.or.jp/ journal_16-1eng.html)
A novel quad-channel 10 Gbps CMOS VCSEL array driver with integrated charge pumps

We present a novel design and the test results of a 4-channel driver for an array of Vertical-Cavity Surface-Emitting Lasers (VCSELs). This ASIC, named cpVLAD and fabricated in a 65 nm CMOS technology, has on-chip charge pumps and is for data rates up to 10 Gbps per channel. The charge pumps are implemented to address the issue of voltage margin of the VCSEL driving stage in the applications under low temperature and harsh radiation environment. Test results indicate that cpVLAD is capable of driving VCSELs with forward voltages of up to 2.8 V using 1.2 V and 2.5 V power supplies with a power consumption of 94 mW/channel.