Miracle-dz/UniFAR-FTUs huggingface dataset:
Design of a Multi-Band Antenna for WLAN Application

In this paper, a miniaturized tri-band antenna is proposed and it is composed of a rectangular ring, a trapezoidal ring and a trapezoidal branch. The antenna is simulated by high-frequency structure simulator (HFSS)software. Through simulation, it can be known that adjusting the trapezoidal ring and the trapezoidal branch can adjust the second and the third resonant frequencies. According to the ultimate size obtained by the simulation, an actual multi-band antenna is made and measured. The simulated result of the multi-band antenna is basically consistent with the measured result. The design of the tri-band antenna is verified and the antenna is suitable for wireless local area network (WLAN)application.
Design of All-Metal Vivaldi Phased Array Antenna

A wideband phased array antenna consisted of all-metal Vivaldi is designed in this paper. It is a line array with 8 Vivaldi elements, at the ends of the array there are two additional elements added as the virtual elements to constitute the array environment. The antenna is comprised of the slot line structure and SMA connector, so that it is convenient to process, the size of the array is 150mm×35mm. The simulated and measured results show that the VSWR (voltage standing wave ratio) of the array antenna in the 6 ~ 12 GHz band is less than 2.5, and the phase scanning of 45-degree angle can be realized in this band.
Visualization of Large-Scale Electric Grid Oscillation Modes

Understanding the dynamics of a power system requires that information be presented in a meaningful way. Large-scale modal results are presented for a large interconnected power system using visualization methods to reveal the underlying oscillations in the system. Visualization tools are used to capture the quality of mode estimation among several bus signals, identify different modal interactions existing in the system and visualize modal power flows for tracking sources of grid oscillations. The use of wide-area visualization in a synthetic large interconnected power grid is used to uncover critical information about the dynamic state of the system, which would have otherwise, not been captured from a graphical plot of the time-varying signals.
Wireless Energy Harvesting in RFID Applications at 5.8 GHz ISM Band, a System Analysis

A complete system analysis for an integrated passive RFID transponder designed at 5.8 GHz range is presented, and a comprehensive set of design concerns for the rectifier circuit as the core of the harvesting block is also discussed. The system analysis is complemented by transistor-level design and simulation of harvesting circuits in a commercial 65 nm CMOS technology. A differential drive rectifier (DDR) has been selected as the most efficient harvesting topology for microwave frequency applications, which works at very low input power levels. The circuit was designed and simulated including chip layout parasitics and antenna matching circuitry. Considering the power budget of the tag chip, a power conversion efficiency of roughly 68.4% is achieved in simulation for an input RF power of around −11.26dBm.
Asymptotic Trajectory Tracking Control With Guaranteed Transient Behavior for MSV With Uncertain Dynamics and External Disturbances

This paper addresses the problem of asymptotic trajectory tracking with prescribed transient behavior for a fully actuated marine surface vessel subject to unmodeled dynamics and external disturbances. A prescribed transient performance constraint is introduced to specify the transient behavior of the output tracking errors. Neural network (NN) approximation and adaptive control techniques are employed to compensate for the unmodeled dynamics. In general, the NN approximation errors always exist in the NN-based adaptive control systems, and typically result in uniformly ultimate boundedness, where the tracking errors cannot be stabilized asymptotically. In order to obtain an asymptotic tracking performance, a robust integral of the sign of the error (RISE) feedback term is introduced in feedback control design to compensate for the NN approximation errors and external disturbances. Consequently, RISE-based adaptive NN controller with compensations of unmodeled dynamics and external disturbances is proposed such that an asymptotic tracking performance is achieved with guaranteeing prescribed transient behavior. The performance of the proposed tracking controller is shown by simulation results.
A Survey on Cluster-Based Routing Protocols for Unmanned Aerial Vehicle Networks

In recent years, unmanned aerial vehicles (UAVs) have gained popularity for various applications and services in both the military and civilian domains. Multiple UAVs can carry out complex tasks efficiently when they are organized as an ad hoc network, where wireless communication is essential for cooperation and collaboration between UAVs and the ground station. Due to rapid mobility and highly dynamic topology, designing a routing protocol for UAV networks is a challenging task. As the number of UAVs increases, a hierarchical routing called clustering is necessarily required to provide scalability because clustering schemes ensure the basic level of system performance such as throughput, end-to-end delay, and energy efficiency. For approximately a half-decade, several survey articles have been reported on topology-based routing and position-based routing for UAV networks. To the best of the authors’ knowledge, however, there is no survey on cluster-based routing in the literature. In this paper, cluster-based routing protocols for UAV networks are extensively surveyed and qualitatively compared in terms of outstanding features, characteristics, competitive advantages, and limitations. Furthermore, open research issues and challenges on cluster-based routing are discussed.
A Simple Robust Equal-Split T-Junction Power Divider at Three Frequencies

This paper presents a novel design of a tri-band equal-split T-junction power divider incorporating a new concept of impedance matching using a common frequency. The power divider hence designed is able to divide power equally between the two output ports at three desired frequencies of interest- 900MHz (GSM downlink), 1.8GHz (GSM uplink) and 3.5GHz (WiMAX and 5G communication under testing). An FR4 prototype, fabricated based on the theoretical formulations, shows a good agreement between the simulated and measured results.
Dynamic Average Modeling of a CSI-based Small-Scale Standalone Wind Energy Conversion System

A current-source inverter-based small-scale standalone wind energy conversion system has been recently proposed. The detailed switch-level model of the system can be implemented using various available circuit-oriented simulation software packages such as Matlab/Simulink. However, the complications associated with such a model, including long simulation time, large memory size requirement, discontinuities and nonlinearities can be avoided when detailed switching transients are not of interest. In this paper, an average-value model of the proposed wind turbine system is systematically developed and verified against the detailed switch-level model, by comparing the simulated open-loop step responses and dynamic closed-loop responses.
Identification of Jamming Factors in Electronic Information System Based on Deep Learning

Jamming identification is the precondition of taking targeted anti-jamming measures, and it is very important to improve the adaptability of electronic information system to electromagnetic environment. The traditional recognition method of jamming is based on the feature extraction based on expert knowledge, but due to the jamming pattern diversity and different parameter, in practice it is difficult to determine the appropriate feature set. Therefore, this paper introduces a deep learning approach, which automatically extracts features from the original data to identify the jamming factors of electronic information system. In order to demonstrate the effectiveness and practicability of this approach, the noise jamming factor identification of the superheterodyne receiver is introduced.
Research on the Hidden Markov Model in Hot Topics of the Internet

With the rapid development of the Internet, the amount of network data was exponentially increased and based on a dynamic society the network at any time will produce many hot topics. According to the requirements of the Hidden Markov Model, the paper provided and modeled a general framework based on the statistical modeling of HMM for solving the problem of hot topics on networks, then assessed the probability of a network theme to be a hot topic. Experiments show that the framework is superior to the traditional algorithm of network hot topics discovery considering the convergence speed and accuracy.
Interferometric SAR Baseline Estimation by Partitioned High Coherence Areas

In this article, a novel interferometric synthetic aperture radar (InSAR) baseline estimation method based on ground control points (GCPs) and partitioning is proposed. Instead of introducing the existing low-resolution digital elevation model (DEM) to correct the phase jumps between high and low coherence regions in the process of phase unwrapping, we use the high coherence regional block to calibrate the interferometric parameters. In the process of calibration, the GCPs can reference for low resolution DEM, also can be obtained through the filed measurement. Because the interferometric parameters calibration does not change the absolute phase, which avoids the local DEM restriction by low resolution DEM. In addition, the block based on the coherence map avoids DEM inversion error due to overall absolute phase deviation. Gaofen-3 InSAR data of Ningbo area are used to verify the effectiveness of the proposed method.
Command and Control Structures in Malware: From Handler/Agent to P2P

Internet attack tools have evolved, similary to the way that operating systems and applications themselves have evolved. We will focus on the particular aspect, the mechanisms to allow control of the increasing number of hosts being expolied. The result is an increase in effieciency that allows attackers today to rapidly marshal the computing resources of milllions of personal computers across the globe in order to use them for a wide range of criminal activities. In particular, we consider the impact of P2P command and control mechanisms and others features of distributed attack tools that result in a distributed attack network resilient to current methods of detection, monitoring and takedown by any individual defender or rival. We look at the impact these strcutures have on incident response and muse about the trends for the years to come.
Generalisation of proof simulation procedures for Frege systems by M.L. Bonet and S.R. Buss

ABSTRACT In this paper, we present a generalisation of proof simulation procedures for Frege systems by Bonet and Buss to some logics for which the deduction theorem does not hold. In particular, we study the case of finite-valued Łukasiewicz logics. To this end, we provide proof systems and which augment Avron's Frege system HŁuk with nested and general versions of the disjunction elimination rule, respectively. For these systems, we provide upper bounds on speed-ups w.r. t. both the number of steps in proofs and the length of proofs. We also consider Tamminga's natural deduction and Avron's hypersequent calculus GŁuk for 3-valued Łukasiewicz logic and generalise our results considering the disjunction elimination rule to all finite-valued Łukasiewicz logics.
Effects of subject‐oriented visualization tools on search by novices and intermediates

This study explores how user subject knowledge influences search task processes and outcomes, as well as how search behavior is influenced by subject‐oriented information visualization (IV) tools. To enable integrated searches, the proposed WikiMap + integrates search functions and IV tools (i.e., a topic network and hierarchical topic tree) and gathers information from Wikipedia pages and Google Search results. To evaluate the effectiveness of the proposed interfaces, we design subject‐oriented tasks and adopt extended evaluation measures. We recruited 48 novices and 48 knowledgeable users, that is, intermediates, for the evaluation. Our results show that novices using the proposed interface demonstrate better search performance than intermediates using Wikipedia. We therefore conclude that our tools help close the gap between novices and intermediates in information searches. The results also show that intermediates can take advantage of the search tool by leveraging the IV tools to browse subtopics, and formulate better queries with less effort. We conclude that embedding the IV and the search tools in the interface can result in different search behavior but improved task performance. We provide implications to design search systems to include IV features adapted to user levels of subject knowledge to help them achieve better task performance.
Dufay's Nuper rosarum flores, King Solomon's Temple, and the Veneration of the Virgin

Analysis of the architecture of the cathedral of Florence suggests that there is no correlation between the structural proportions in that church and the durational ratios in Guillaume Dufay9s motet Nuper rosarum flores (as suggested by Charles Warren in 1973). The inspiration for the formal plan of the motet was likely not architecture, but a biblical passage (1 Kings 6:1-20), which gives the dimensions of the Temple of Solomon as 60 x 40 x 20 x 30 cubits. The vision of the Temple and, to a lesser degree, the image of the womb of the Virgin as the temple of Christ were elaborated upon by countless medieval exegetes, sermonizers, liturgical commentators, poets, and manuscript illuminators. Dufay expressed the traditional numerical symbols of the Temple (6:4:2:3, 4 and 7) and that of the Virgin (7) throughout the structure of his motet and thereby effected a musical union of these two spiritual forces.
Wearables: Ein Blick aus ärztlicher Perspektive über Möglichkeiten, Herausforderungen und Risiken im Gesundheitswesen

Zusammenfassung Durch die dynamische Entwicklung von mobilen Sensoren bieten sich Medizinern ständig neue, potentiell kosteneffektive Wege für Diagnostik, Monitoring und Screening. Angetrieben durch den wachsenden Erfolg auf dem Konsumentenmarkt streben immer mehr Wearables & Co in den Gesundheitsmarkt. Weltweit beschäftigen sich Forschungsgruppen seit Jahren mit den Auswirkungen dieser mobilen Technologien auf unser Gesundheitswesen. In der Menge der zahlreichen Möglichkeiten und in Anbetracht der rapiden Entwicklung sollte jedoch bedacht werden, dass für einen erfolgreichen Einsatz am Patienten einige Herausforderungen und Risiken berücksichtigt werden müssen. Der Artikel bietet einen Einstieg in das breite Themenfeld rund um die Einführung von Wearables in die klinische Routine und berichtet über eine Auswahl an realisierten und potentiellen Einsatzmöglichkeiten.
UDP-Sugar Producing Pyrophosphorylases: Distinct and Essential Enzymes With Overlapping Substrate Specificities, Providing de novo Precursors for Glycosylation Reactions

Nucleotide sugars are the key precursors for all glycosylation reactions and are required both for oligo- and polysaccharides synthesis and protein and lipid glycosylation. Among all nucleotide sugars, UDP-sugars are the most important precursors for biomass production in nature (e.g., synthesis of cellulose, hemicellulose, and pectins for cell wall production). Several recent studies have already suggested a potential role for UDP-Glc in plant growth and development, and UDP-Glc has also been suggested as a signaling molecule, in addition to its precursor function. In this review, we will cover primary mechanisms of formation of UDP-sugars, by focusing on UDP-sugar metabolizing pyrophosphorylases. The pyrophosphorylases can be divided into three families: UDP-Glc pyrophosphorylase (UGPase), UDP-sugar pyrophosphorylase (USPase), and UDP-N-acetyl glucosamine pyrophosphorylase (UAGPase), which can be distinguished both by their amino acid sequences and by differences in substrate specificity. Substrate specificities of these enzymes are discussed, along with structure-function relationships, based on their crystal structures and homology modeling. Earlier studies with transgenic plants have revealed that each of the pyrophosphorylases is essential for plant survival, and their loss or a decrease in activity results in reproductive impairment. This constitutes a problem when studying exact in vivo roles of the enzymes using classical reverse genetics approaches. Thus, strategies involving the use of specific inhibitors (reverse chemical genetics) are also discussed. Further characterization of the properties/roles of pyrophosphorylases should address fundamental questions dealing with mechanisms and control of carbohydrate synthesis and may allow to identify targets for manipulation of biomass production in plants.
Proposition d’analyse discursive de trois articles de Paul R. Krugman

Paul R. Krugman est un des specialistes eminents de l’economie internationale aujourd’hui. Les textes etudies ici traitent des points fondamentaux du commerce international (« What Do Undergrads Need to Know about Trade? »), des differences de revenu aux Etats-Unis (« For Richer »), et des politiques de reduction d’impot de l’administration americaine (« The Tax-Cut Con »). A travers cette analyse, nous tentons de montrer que Krugman fonde sa strategie discursive sur trois poles distincts : le didactique, le ludique et le subjectif. Le but premier de Krugman est d’expliquer ; aussi, convient-t-il d’identifier clairement ses methodes d’argumentation, son lectorat et de categoriser la langue employee. L’aspect ludique apparait a travers la presence recurrente dans le corpus de l’ironie, la derision et la moquerie, et un decalage constant entre ce que le lecteur attend et ce qui lui est propose. Enfin, la subjectivite s’exprime par le jeu avec la modalite, la connotation et les strategies de renforcement du lien auteur/lecteur.
Correlation Analysis Study between Hearing Loss Occurence and Duration of Type 2 Diabetes Mellitus in Sultan Agung Islamic Hospital Semarang

Introduction: Hearing impairment due to cochlear damage is one complication of Type 2 Diabetes Mellitus (DM2). Objective: This study aims to determine the relationship between duration of DM2 with hearing impairment.Method: The analytic observasional study with the cross sectional design using the medical record of DM2 outpatient in internal clinic of Islamic Sultan Agung Hospital Semarang and also pure tone audiometric examinationâ€™s record in Otorynolaryngology clinic of Islamic Sultan Agung Hospital Semarang.31 medical records of DM2 patients were meeting the inclusion and exclusion criteria. The data consist of 18 medical records of patients with less than6 years duration of DM2, and 13 medical records of patients with more than 6 years duration of DM2. The pure tone audiometry was used to classified the hearing impairment. The data analysis was conducted using SPSS 20.0. The correlation between the duration of DM2 and hearing impairment was analyzed using Chi Square test. The significance relation between the duration of DM type 2 and hearing impairment was analyzed using cooficient contigency, with significance of < 0.05. Result: hearing impairmentâ€™s distribution frequency on tested ears in Sultan agung Islamic Hospital Semarang were 27 ears having SNHL type (43,5%), 19 ears having CHL (30,6%) and 16 ears were normal (25,8%), p = 0,02 (p < 0,05). Conclusion: There is a weak correlation between the DM 2 duration and the incidence of hearing impairment in Sultan Agung Islamic Hospital Semarang.
A Case of Periventricular Nodular Heterotopia with Late Onset Seizures

DOI: 10.4328/JCAM.1934 Received: 05.06. 2013 Accepted: 04.07. 2013 Printed: 01.09. 2013 J Clin Anal Med 2013;4(suppl 1): 24-6 Corresponding Author: Mustafa Tansel Kendirli, Nöroloji Servisi, GATA Haydarpaşa Eğitim Hastanesi, Üsküdar, İstanbul, Türkiye. T. : +9
Speech perception based algorithm for the separation of overlapping speech signal

An algorithm for the analysis of speech utilising the time frequency properties of wavelets is introduced. The extracted wavelet coefficients are analysed using two techniques, firstly a covariance matrix is generated to provide information about speaker characteristics. Second, the kurtosis of the wavelet coefficients is used to facilitate the detection of multiple speakers. Preliminary results show that some phonetic information, such as articulation placement and identification of voiced/unvoiced sections, can be extracted from the kurtosis analysis.
Feedback control of a bi-steerable car using flatness application to trajectory tracking

Bi-steerable cars are four wheel drive robots with a double-axle steering capability. We tackle the stabilization problem for this kind of nonholonomic system by exploiting its flatness property. After deriving new relations between the flat output dynamics and the robot controls, an endogenous dynamic feedback is computed in order to linearize the system and stabilize it around a reference trajectory. Simulation and experimental results using a real bi-steerable car demonstrate the robustness of the approach.
Finances publiques européennes: une réforme politiquement acceptable du Pacte de stabilité et de croissance

[fre] Le debat sur l’opportunite de modifier ou de supprimer le Pacte de stabilite et de croissance s’est amplifie en 2002-2004. Pour certains, il est un moindre mal, pour d’autres, il bloque le developpement economique de la zone euro. Il apparait de plus en plus que, si le Pacte ne peut pas evoluer d’une facon politiquement acceptable pour tous les acteurs concernes, la construction europeenne et la credibilite de l’euro en seront durablement affectees. Des propositions d’evolution du Pacte ont ete faites. La plupart de ces propositions ne sont pas politiquement acceptables, au sens defini dans le texte. Nous presentons une solution de reforme du Pacte qui preserve son esprit et permet de replacer les deficits des Etats membres dans leur contexte economique. Classification JEL : E61, E62, F42 [eng] European public finance : a politically acceptable reform of the Growth and Stability Pact The debate on whether to modify or kill the Stability and Growth Pact has grown in 2002-2004. For some, it remains helpful, for others, it blocks the Euro zone growth. If the Pact cannot evolve in an acceptable political way, the European construction and the Euro credibility could be affected. Several proposals to reform the Pact have been put forward. Most are not politically acceptable (the notion of acceptability is defined in the text). We present a proposal to reform the Pact which spares its spirit and allows to put public deficits in economic perspective. JEL classification : E61, E62, F42
Impact of a P4P and HIT Program to Reduce Emergency Department Hospital Utilization at Federally Qualified Health Centers in Hawai‘i

Pay for performance (P4P) and health information technology (HIT) have been used to improve health care quality, but few studies examine interventions combining P4P with HIT support at federally qualified health centers (FQHCs). An intervention comparison, pre-post study was conducted to determine the effect of a P4P+HIT intervention on emergency department (ED) visits and hospitalizations. While ED utilization decreased in both intervention and comparison groups, there were no significant differences in ED or hospital utilization between intervention and comparison groups. Additional time or support above and beyond P4P+HIT may be necessary to improve the health care provided by FQHCs to underserved communities in Hawai‘i.