Miracle-dz/UniFAR-FTUs huggingface dataset:
Design of Vivaldi Microstrip Antenna for Ultra-Wideband Radar Applications

The development of radar technology has an important role in several fields such as aviation, civil engineering, geology, and medicine. One of the essential components of the radar system is the antenna. The bandwidth can specify the resolution of the radar. The wider the bandwidth, the higher the resolution of radar. For Ground penetrating radar (GPR) or medical applications need with a high-resolution radar so it needs an antenna with a wide bandwidth. In addition, for the radar application is required antenna with directional radiation pattern. So, we need an antenna with wide bandwidth and directional radiation pattern. One of antenna that has meet with these characteristics is vivaldi antenna. In previous research, has designed several vivaldi microstrip antenna for ultra-wideband radar applications which has a working frequency of 3.1 to 10.7 GHz. However, these studies there is still a shortage of one of them is the radiation pattern from lowest to highest frequency radiation pattern is not uniform in the sense that not all directional. Besides the antenna material used is also not easily available and the price is not cheap. This paper will discuss the design of a vivaldi microstrip antenna which has a wide bandwidth with directional radiation pattern works on 3.1 to 10.7 GHz and using cheaper substrate. Substrates used for vivaldi microstrip antenna vivaldi is FR4 with a dielectric constant of 4.3 and a thickness of 1.6 mm. Based on the simulation results we obtained that the antenna design has frequency range 3.1-10.7 GHz for return loss less than -10 dB with a directional radiation pattern. This antenna gain is 4.8 to 8 dBi with the largest dimension is 50 mm x 40 mm.
Impresiones 3D y fabricación digital: una nueva revolución tecnológica?

Las tecnologias de fabricacion digital, como la impresion 3D, prometen generar una tercera re- volucion industrial con profundas consecuencias para la manufactura, el comercio y el consumo. De forma similar a otras revoluciones tecnologicas recientes, tal como la de las tecnologias de infor- macion y comunicacion, la fabricacion digital ha generado expectativas considerables y empre- sas, usuarios e instituciones educativas estan co- menzando a adoptarlas. En la medida que aumen- ta el interes, es cada vez mas evidente que la fabricacion digital afectara el comercio, el em- pleo y diversos aspectos de la vida cotidiana. Pero, ? sera la fabricacion digital un medio para aumentar el comercio, la inclusion y el empleo? O por el contrario, ? implicara nuevas formas de de- pendencia y desigualdad? A partir de estas pre- guntas, este trabajo intenta explorar algunos de los posibles senderos de desarrollo de la fabrica- cion digital en America Latina. En particular, se presentaran algunos de los usos y desarrollos ac- tuales de la fabricacion digital en la region tenien- do en cuenta dos escenarios de experimentacion: los espacios formales de investigacion y desarro- llo, tales como universidades, empresas y labora- torios publicos de I+D; asi como otros espacios mas informales, tales como los fablabs y espacios de la cultura maker. Se argumenta que la fabrica- cion digital puede generar nuevas oportunidades para el desarrollo social y economico en la region, pero que este desarrollo debe estar acompanado por la creacion de espacios amplios de participa- cion y experimentacion con la tecnologia y de la adopcion creciente de nuevas practicas de inno- vacion abierta.
Factors that Influence Teachers’ Perceptions of Information Communication and Technology (ICT) in Mathematics Teaching in Kenyan Secondary Schools

This study investigated the factors that influence mathematics teachers’ perceptions of ICT in mathematics teaching in Kenyan secondary schools. Participants for the study came from a population of mathematics teachers in Nairobi and Nyandarua counties in Kenya. The results revealed that mathematics teachers’ perceived roles of ICT in the classroom were positive with a large proportion of teachers agreeing that ICT plays a significant role in the teaching-learning process. Additionally, demographic factors such as age, school type, teachers’ educational level, principal’s subject major, and so on were significantly related to mathematics teachers’ perceptions of the roles of ICT in the classroom. The Internet and ownership of laptop computer were found to be useful in shaping mathematics teachers’ perceptions; however, this was not true for the availability of computer labs, technology resources, and location of the school (rural or urban). Additionally, limited time to integrate ICT in the lessons and inadequate ICT training in mathematics related software were found to limit mathematics perceptions of the positive roles of ICT in mathematics teaching. The study recommends that mathematics teachers need to be trained on the relevant mathematics software, be provided with reliable Internet connection, and encouraged to acquire laptop computers for instructional use.
A Lock-free B

Lock-free data structures provide a progress guarantee and are known for facilitating scalability, avoiding deadlocks and livelocks, and providing guaranteed system responsiveness. In this paper we present a design for a lock-free balanced tree, specifically, a Btree. The Btree data structure has an important practical applications, and is used in various storage-system products. As far as we know this is the first design of a lock-free, dynamic, and balanced tree, that employs standard compare-and-swap operations. ∗Supported by THE ISRAEL SCIENCE FOUNDATION (grant No. 283/10). †Dept. of Computer Science, Technion Israel Institute of Technology, Haifa 32000, Israel anastas@cs.technion. ac.il ‡Dept. of Computer Science, Technion Israel Institute of Technology, Haifa 32000, Israel erez@cs.technion. ac.il
PREFACE TO SPECIAL ISSUE ON MATHEMATICS OF SOCIAL SYSTEMS

This special issue is an outgrowth of a minisyposium titled ``Mathematics of Social Systems" held at the 9th AIMS Conference on Dynamical Systems, Differential Equations and Applications, held in Orlando, FL in July 2012. Presenters from that session were invited to submit papers that were reviewed using the usual procedures of the DCDS journals, along with additional authors from the field. Mathematics has already had a significant impact on basic research involving fundamental problems in physical sciences, biological sciences, computer science and engineering. Examples include understanding of the equations of incompressible fluid dynamics, shock wave theory and compressible gas dynamics, ocean modeling, algorithms for image processing and compressive sensing, and biological problems such as models for invasive species, spread of disease, and more recently systems biology for modeling of complex organisms and complex patterns of disease. This impact has yet to come to fruition in a comprehensive way for complex social behavior. While computational models such as agent-based systems and well-known statistical methods are widely used in the social sciences, applied mathematics has not to date had a core impact in the social sciences at the level that it achieves in the physical and life sciences. However in recent years we have seen a growth of work in this direction and ensuing new mathematics problems that must be tackled to understand such problems. Technical approaches include ideas from statistical physics, nonlinear partial differential equations of all types, statistics and inverse problems, and stochastic processes and social network models. The collection of papers presented in this issue provides a backdrop of the current state of the art results in this developing new research area in applied mathematics. The body of work encompasses many of the challenges in understanding these discrete complex systems and their related continuum approximations. For more information please click the “Full Text” above.
DIVERSITY ANALYSIS IN WIFI SYSTEM

Wi-Fi, a Wireless Local Area Network technology has solely conquered the arena of short range wireless broadband systems. To support the existing system and to further enhance the measure of performance in multipath fading environment, Wi-Fi technology is intertwined with space diversity technique which is implemented using Alamouti coding and is then introduced with interleaving/scrambling technique to take the benefit of time diversity. Diversity technique has been an essential factor in improving the quality of the wireless system’s operation by providing performance almost equivalent to that of the least distorted path among various multi paths at any given time and thereby accounting for the fading effect caused in corruptive communication channels. This paper discusses the performance of space diversity techniques in Wi-Fi by comparing their Bit Error Rate (BER). Various channel models are taken into account to simulate the real time scenario of a noisy unreliable wireless environment.
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In this paper, we consider applying \introspective computing," in which a \primary processor" executes the desired program, and a \secondary processor" monitors the primary processor's execution status and attemps to help it to optimize performance, to the problem of prefetching for a data cache. We examine the space of architectures and prefetching algorithms that may be applied to this task, and propose a simple prefetching scheme using an introspective architecture. We demonstrate that our method can reduce cache misses by up to about 60% on common benchmarks, and conclude that this, and a number of its natural extensions, may be a fruitful method for signi cantly improving CPU performance.
Diffusion Under Geometrical Constraint

Here we discus the diffusion of particles in a curved tube. This kind of transport phenomenon is observed in biological cells and porous media. To solve such a problem, we discuss the three dimensional diffusion equation with a conﬁning wall forming a thinner tube. We ﬁnd that the curvature appears in a effective diffusion coefﬁcient for such a quasi-one-dimensional system. As an application to higher dimensional case, we discuss the diffusion in a curved surface with thickness. In this case the diffusion coefﬁcient changes to the tensor form depending on the mean and Gaussian curvatures. Then the diffusion ﬂow can be interpreted as usual ﬂow plus anomalous ﬂow. The anomalous ﬂow shows not only the diffusion but also the concentration depending on mean and Gaussian curvatures, and also it includes the ﬂow proportional to the gradient of Gaussian curvature.
F-labeled Presynaptic Dopaminergic Tracers Synthesis, Radiochemical Analyses, and Preclinical Evaluation of [ 18 F]fdopa and [ 18 F]cft Dissertation Opponent

Sarita Forsback F-LABELED PRESYNAPTIC DOPAMINERGIC TRACERS Synthesis, Radiochemical Analyses, and Preclinical Evaluation of [F]FDOPA and [F]CFT Turku PET Centre and Department of Clinical Physiology and Nuclear Medicine, University of Turku, Turku, Finland Annales Universitatis Turkuensis Painosalama Oy, Turku, Finland 2012 Dysfunction of the dopaminergic system in brain is involved in several pathological conditions such as Parkinson’s disease and depression. 2β-Carbomethoxy-3β-(4-[F] fluorophenyl)tropane ([F]CFT) and 6-[F]fluoro-L-dopa ([F]FDOPA) are tracers for imaging the dopaminergic function with positron emission tomography (PET). Peripheral uptake of [F]FDOPA is also used in the localization and diagnosis of neuroendocrine tumors. [F]FDOPA and [F]CFT can be synthesized by electrophilic fluorodestannylation. However, the specific radioactivity (SA) in the electrophilic fluorination is low with traditional synthetic methods. In this study, [F]FDOPA and [F]CFT were synthesized using post-target-produced [F]F2 as an electrophilic fluorination agent. With this method, tracers are produced with sufficient SA for neuroreceptor studies. Specific aims in this study were to replace Freon-11 in the production of [F]FDOPA due to the ozone depleting properties of this solvent, to determine pharmacological specificity and selectivity of [F]CFT with respect to monoamine transporters, and to compare the ability of these tracers to reflect the degree of nigral neuronal loss in rats in which the dopaminergic system in the brain had been unilaterally destroyed by 6OHDA. Post-target-produced [F]F2 was successfully used in the production of [F]FDOPA and [F]CFT. The SA achieved was substantially higher than in previous synthetic methods. Deuterated compounds, CD2Cl2, CDCl3 and C3D6O, were found to be suitable solvents for replacing Freon-11. Both [F]FDOPA and [F]CFT demonstrated nigrostriatal dopaminergic hypofunction and correlated with the number of nigral dopaminergic neurons in the 6-OHDA lesioned rat. However, the dopamine transporter (DAT) tracer [F]CFT was more sensitive than the dopamine synthesis tracer [F]FDOPA in detecting these defects because of the higher non-specific uptake of [F]FDOPA. [F]CFT can also be used for imaging the norepinephrine transporter (NET) because of the specific uptake into the locus coeruleus. The observation that [F]CFT exhibits specific uptake in the pancreas warrants further studies in humans with respect to potential utility in pancreatic imaging.
Generating Subtitles Automatically For Sound in Videos

— Now-a-days, video plays an important role to understand the information to people more clearly and to gain deep knowledge and some of its examples are the song, movies or the video lectures. Certain Individuals cannot understand the meaning of such videos because there is not any text transcription available. Hence, it is important to make videos available for people having auditory problem and people who don’t have the deep knowledge of English language and also to remove the gaps of their native language, which can be done by using Subtitles of the videos. Earlier, people need to download subtitles of any video from internet which is very problematic. Hence, generating subtitles automatically without any use of internet is very interesting subject to research. This paper include the same concept with three important steps namely Audio Extraction, Speech Recognition and finally, Subtitle Generation.
Analysis of a Viscous Two-Field Gradient Damage Model I: Existence and Uniqueness

The paper deals with a viscous damage model including two damage variables, a local and a non-local one, which are coupled through a penalty term in the free energy functional. Under certain regularity conditions for linear elasticity equations, existence and uniqueness of the solution is proven, provided that the penalization parameter is chosen sufficiently large. Moreover, the regularity of the unique solution is investigated, in particular the differentiability w.r. t. time.
H7 3-804s&y'' Representations of the Language Recognition Problem. for a Theorem Proyer Representations of the Language Recognition Problem for a Theorem Proyer

The authors acknowledge Mr. James Albus and Mr. Sam Rosenfeld of the National Aeronautics and Space Administration for their support of this work. We express our appreciation to Mr. Daniel Fishman of the University of Maryland for participating in the early efforts and for valuable discussions. We wish to thank Dr. Cordell Green of Stanford University for reading an early draft of the work and for providing many suggestions for improvements.
An Observational and Modeling Study of an Atmospheric Internal Bore during NAME 2004

Abstract Observations from the 2004 North American Monsoon Experiment (NAME) have been used to identify an atmospheric internal bore that occurred over the Gulf of California (GoC) on 31 July 2004. This bore disturbance was identified at Bahia Kino along the northwest coast of Mexico during the late evening of 31 July. It was hypothesized to have originated from the interaction of a gravity current from a large mesoscale convective system (MCS), which formed along the western slopes of the Sierra Madre Occidental during the afternoon, and a surface stable layer that developed from a sea-breeze circulation. It is suggested that the bore’s energy was trapped at low levels by an elevated stable layer. The vertical structure and undular nature of the bore was initially identified from 915-MHz wind profiler data at Bahia Kino. Results show a series of waves along the bore’s leading edge and turbulent mixing of air from above the stable layer to the surface on the downstream face of the leading undulation. The .
Value and Population Responses in Human Visual Cortex Population Response Profiles in Early Visual Cortex Are Biased in Favor of More Valuable

Population response profiles in early visual cortex are biased in favor of more valuable 1 stimuli 2 3 John T. Serences and Sameer Saproo 4 5 Perception and Cognition Lab, Department of Psychology and Graduate Program in 6 Neuroscience, University of California, San Diego, USA 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 Correspondence: 45 Department of Psychology 46 University of California, San Diego 47 9500 Gilman Drive 48 La Jolla, CA 92093-0109 49 Phone: 858.534. 3686 50 jserences@ucsd.edu 51 Articles in PresS. J Neurophysiol (April 21, 2010). doi:10.1152/jn.01090. 2009
Improving Measures of Housing Insecurity: A Path Forward

Housing insecurity is a real, persistent, and growing problem with implications for people’s education, health, and well-being. Although there is a general awareness among policymakers and the public about the causes and consequences of the affordable housing crisis, there are large gaps in our knowledge of different components of housing insecurity, the duration of housing insecurity and the relationship between housing insecurity and other forms of hardship. Much of the research treats the different dimensions of housing insecurity as discrete problems rather than part of a continuum of bad options for poor renters. As a result, policymakers do not have enough information about how many households experience housing insecurity, how they move in and out of different types of housing situations, and the effect of housing insecurity on other measures of material hardship and personal well-being.
Aeronautical Research at the NPL

In 1909, Sir Richard Glazebrook (then Dr.) was Director of the National Physical Laboratory and under him the Superintendent of the Engineering Division was Sir Thomas Stanton (then Dr.). These two scientists were responsible for initiating aeronautical research at the NPL. The main stimulus came, however, from the Advisory Committee for Aeronautics, formed in May 1909 with Lord Rayleigh as President and Glazebrook as Chairman. This committee obtained a grant from the Treasury for aeronautical work amounting to £1923 13s 5d for the seven months of that year, with a grant at the same rate for the year 1910; this money was spent at the NPL.
Machine Learning Log File Analysis

The need for analysis of systems log files is increasing as systems grow larger and more complicated the quantity and complexity of log files grow. This project will take an exploratory look into how machine learning analysis performs on log files by using textual classification tools to explore these types of documents and observe whether events and failures can be identified.
An analysis on the velocity of dust particles in the plate-type electrostatic precipitators used in thermoelectric power plants

Experimental data collected from different plate-type electrostatic precipitators used in a thermoelectric power plant has been analyzed. The following parameters were considered: the collection efficiency, average migration velocity of dust particles, velocity distribution of the gas in the input and output channels of precipitators. The average migration velocity of dust particles can be estimated using various mathematical models, and the gas velocity can be computed using the velocity distributions from the input channels of the precipitators. The traveling time of dust particles between the electrodes is smaller than the traveling time along the precipitator sections.
A 2.4GHz ultra-low power current-reuse bleeding mixer with resistive feedback

In this paper we report a 2.4GHz ultra low power (ULP) CMOS down-converter based on current-reuse bleeding technique with resistive feedback. A new figure of merit maximizing gmfT-to-current ratio has been used to bias the transconductance stage. This single balanced mixer shows a conversion gain of 18.7dB and a noise figure of 11.5dB at 10MHz intermediate frequency (IF). Operating under 0.8V supply, the mixer core consumes 330μW and achieves an IIP3 and ICP1 of −14.9dBm and −21dBm respectively. The LO to IF and LO to RF isolations are 43dB and 28dB respectively.
A trust model for distributed, cooperative and competitive environments

This technical report classifies and compares the trust management approaches and the relevant trust models proposed by the literature and especially targeted at distributed environments. The report identifies the requirements of a distributed trust model for the NeP4B cooperative and competitive scenario. After this analysis, an initial design of the NeP4B trust model is proposed, with a specific focus on the identification and organization of the relevant trust concepts and the information employed by the model. Francesco Corcoglioniti CEFRIEL NeP4B project — Firb 2005 — Networked Peers for Business Document information Document ID code D1.3. 1
Development of genetic tests for the rapid identification of species in foods.

The aim of the project was the development of DNA based tests that could be used to identify and distinguish common commercial meat species. The emphasis of the work was on development of a method that would be successful for cooked and highly processed foods. The potential of the PCR (polymerase chain reaction) as the basis of such a test was examined. The DNA sequence chosen as the target for PCR amplification was mitochondrial DNA (mtDNA). DNA sequence from a region of the mtDNA called the control region was obtained for cattle, sheep, pig, goat and chicken by DNA sequencing and from the literature. Using this information, species-specific PCR primers pairs were developed that allowed all the above species to be identified and distinguished. Amplification products were specific, showing no cross-reaction with other species, and were of a unique size for each species. In addition, multiplex PCR, using mixtures of species-specific primer pairs, allowed identification of several species in one PCR reaction. Amplification was successfully achieved fi-om DNA extracted firom blood, raw meat and food samples including cooked and highly processed foods and products. To assess the consistency of the species-specific primers, amplification was carried out on numerous individuals and breeds of particular species; amplification was successful for all individuals tested. DNA sequencing of the control region of individual animals was also carried out to assess the level of polymorphism within domestic meat species. These experiments showed that DNA polymorphism was low in domestic species and suggested that a species-specific PCR test based on the mtDNA control region would be consistent. The complete sequence of sheep mtDNA control region was obtained. The sheep control region is characterised by the presence of an area of repeated DNA consisting of four seventy five base pair repeats. Alignment of the control region sequence with other domestic species revealed that the putative mitochondrial control element CSB 1 is well conserved in these species. However, the control elements CSB 2 and 3 are not well conserved even in the closely related species of sheep, goat and cattle. "I can never touch meat until it is cooked. As a youth I used to weep in butchers shops" Uncle Monty in 'Withnail and I' Handmade Films, 1986