Miracle-dz/UniFAR-FTUs huggingface dataset:
Web View: A Measurement Platform for Depicting Web Browsing Performance and Delivery

Web browsing is the main Internet service, and every customer wants the minimum web page loading times. To satisfy this perpetual need, web browsers offer new processing engines and increased functionalities. Web developers make use of new programming languages and paradigms, new transport protocols have been introduced, network operators offer increased bandwidth, and CDN providers deploy web servers closest to end users. To assess the efficiency of these evolutions, delivered performance is often evaluated in a standalone manner, without considering the whole chain of web browsing. We propose Web View, a measurement platform that performs automated web browsing sessions on popular websites in a user-representative environment. Through different configurable parameters, Web View measures a wide set of information in order to evaluate the impact of the different parameters (transport protocols, web browsers, CDN, access networks, etc.). Based on those measurements, to ease the understanding of web browsing and the corresponding evolutions, Web View offers a public visualization website (https://webview. orange.com). For instance, with Web View, we were able to detect that the use of different CDNs at different times of the day can decrease loading times up to 400 percent and that the delivery of content through different transport protocols can decrease loading times up to 79 percent. This article presents the Web View measurement platform as well as remarkable events we noticed during more than one year of measurements.
Shoot-Out: Exploring HyperNEAT for an optimal Final-Third Approach in Robocup-2D Soccer

Past research have propositioned HyperNEAT to be suitable for domains that express spatial regularities. The regularities facilitate an indirect encoding scheme that expresses the topology of the decision-making Artificial Neural Network (ANN). The Robocup-2D soccer sub-task of Keepaway is one such domain, where HyperNEAT has shown not only to be effective at solving Keepaway, but also task transferable by scale using back the same CPPN that encodes the ANN topology. In this paper, we explore whether HyperNEAT could not only train a team of keepers to perform Keepaway at the opponents’ half, but also for each keeper to consider shooting towards a well-guarded goal with an opposing taker scripted as the goalkeeper. In short, the expanded task is termed ‘Shoot-Out’. The paper presents the extensions to Verbancsis’s HyperNEAT-BEV framework for Shoot-Out, and a discussion of the results obtained against runs from a policy where keepers take random actions (Random), and also against a policy of keepers with scripted behaviors (Hand-Coded).
Enhancing of aluminum alloy 1050-H4 tensile strength by accumulative roll bonding process

The accumulative roll-bonding process (ARB) was performed on commercially available AL-1050-H4 aluminum alloy. Samples were rolled for two passes. In ARB process, thickness is reduced by 50% for each pass. The aim of performing the ARB process was to refine the grain structure of aluminum 1050-H4 to increase its tensile strength. A tensile test was performed at room temperature and at a steady strain rate with the aim of determining whether ARB increases the mechanical properties of aluminum 1050-H4 and identify the moment the material experience high ultimate tensile strength. Samples were cut according to standard test methods for tension testing of metallic material (ASTM) at rolling direction (RD). Information about the microstructure of samples was obtained using a scanning electron microscope (SEM). The highest UTS was obtained on the 1st pass and was reported as 127.1 MPa and the lowest UTS was discovered on parent sample and reported as 111.7 MPa. It was also observed that E-modulus and percentage elongation decreased due to the ARB process. It was noticed that after several rolling process, material surface temperature increases. The increase in surface temperature led to increase in particle size which was discovered on 2nd pass of ARB process which result in material losing its mechanical properties
Reproducible Functional Tests for Multi-scale Network Services

Network functions virtualization (NFV) is developed to take advantage of virtualization technologies to separate network functions from the underlying hardware appliances. This approach brings a new level of flexibility in network services deployment for rapid composition, migration and scaling based on changing traffic load and current demand, leading to a higher QoS. Moreover, it allows introducing DevOps approach in the development process resulting in reduced life-cycle and shorter time-to-market. However, in order to realize the anticipated benefits of NFV, developers and network operators need mechanisms to adequately test Virtualized Network Functions (VNF) against different deployment scenarios and in different scales. To this end, we introduce a new library for light-weight automated functional testing of VNFs. It helps the developers to write functional tests in Python and run them on different platforms. Using the library, test developers choose which infrastructure to use, which network services and test VNFs to launch, how to interconnect them, how to trigger the test process and inspect, verify and validate the output against the expected values and conditions. Test developers can use network service packages to deploy services or can compose them in a test code using different parameters to simulate various deployment scenarios. Finally, the library can be used to set automated testing in CI/CD environments or can be used locally during the development phase. In this paper, we describe the architecture of the library, the basic workflow and give an example of testing multiple flavors of a network service using the same code.
Application of Clustering Methods in MANET

The article is devoted to a review of possible methods for applying clustering algorithms to solve problems in routing networks of MANET. A detailed review of the problems of the MANET networks was carried out, with the possibility of solving them using clustering based on neural networks. Specific implementations of cluster algorithms for application in routing based on a multi-criteria selection of network parameters are proposed. These algorithms are possible for use in classical routing protocols such as AODV and OLSR. A mathematical model of the proposed algorithm and the results of work when implemented in existing routing protocols are presented.
High-Efficiency Rectifier with Wide Range of Input Power Using Coupling Reconfigurable Coupler

In the paper, a high-efficiency rectifier with wide range of input power is proposed. The rectifier is composed of a coupler with reconfigurable coupling, T-type matching networks and two sub-rectifiers used for lower and higher input power, respectively. By changing the coupling of the coupler to 0 dB and $+\infty$ dB, the two sub-rectifiers can be driven sequentially, resulting in maintaining high efficiency in a wide input power range. Working principles of the proposed rectifier is introduced. For validation, a single-band prototype is designed, fabricated and measured. The measured results demonstrate that from - 2 dBm to 28 dBm, a conversion efficiency of more than 50% is achieved, with a maximum conversion efficiency of 74%.
MF-EFP: Predicting Multi-Functional Enzymes Function Using Improved Hybrid Multi-Label Classifier

Predicting enzymes function is an important and difficult problem, particularly when enzymes may have the multiplex character, i.e., some enzymes simultaneously have two or three function classes. Most of the existing enzyme function predictor can only be used to deal with the mono-functional enzymes. Actually, multi-functional enzymes should not be ignored because they usually possess diverse biological functions worthy of our special notice. By introducing the “improved Hybrid Multi-label Classifier” and “neighbor score”, a new predictor, called MF-EFP, has been developed that can be used to deal with the systems containing both mono-functional and multi-functional enzymes. As demonstration, the jackknife cross-validation was performed with MF-EFP on a benchmark dataset of enzymes classified into the following 7 functional classes: (1) EC 1 Oxidoreductase, (2) EC 2 Transferase, (3) EC 3 Hydrolase, (4) EC 4 Lyase, (5) EC 5 Isomerase, (6) EC 6 Ligase, (7) EC7 Translocases, where none of enzymes included has ≥90% pairwise sequence identity to any other in a same subset. The subset accuracy and average precision thus obtained by MF-EFP was 85.62% and 94.16% respectively. Extensive experiments also show that MF-EFP can outperform the existing predictors that also have the capacity to deal with such a complicated and stringent system. As a user-friendly web-server, MF-EFP is freely accessible to the public at the web-site http://www.jci-bioinfo.cn/MF-EFP.
Omnidirectional Circularly Polarized Antenna Based on Dual Zeroth-Order Resonances

This paper presents an omnidirectional circularly polarized (CP) antenna utilizing two orthogonal zeroth-order resonance (ZOR) modes. One of the two ZOR modes is based on a round mushroom construction while the other one is based on the artificial mu-negative transmission line (MNG-TL) devised by using periodical capacitor-loaded lines. The mushroom structure offers a vertical polarization while the periodical capacitor-loaded lines is featured by a horizontally polarized radiation. The proposed antenna is easy to fabricate for a low profile design. The measured axial ratio is less than 3 dB inside the range of 2.35-2.47 GHz. The measured| S11| is better than −10 dB across the range of 2.21 to 2.61 GHz. Acceptable agreement has been observed between simulation and measurement.
Multiplatform Automated Software Testing: Personal Experience of a Maintainer

Automated testing is an essential part of modern software development pipeline. The extent of functionality to be tested varies a lot from project to project, but at least some basic testing capabilities are built into many current development instruments, and automated testing practices are encouraged in most guidelines. The goal of this paper is to share some personal experience with automated smoke testing of a cross-platform game application. Unlike works dedicated to the general picture of testing tools and practices, this paper focuses on specific details and challenges associated with setting up and maintenance of day-to-day automated testing activities.
Performance improvements in flexible polymer-based microwave devices

This paper demonstrates that the molding technique for polymer-based flexible microwave electronics can provide excellent production tolerances, with controlled thickness and roughness. Performance evaluation has been done on the CPW line and bow-tie slotted antennas with and without material improvements. The attenuation in CPW lines has been reduced from 0.1dB/cm to 0.06dB/cm. The measurement results of antennas show that reductions in the dielectric loss can boost antenna gain from 3.1dBi to 4.7dBi.
A MMW Reconfigurable Antenna For Sensing Applications

This paper presents a novel method to design a millimeter-wave frequency reconfigurable antenna for sensing applications. Two types of functional materials are adding to the edges of a patch antenna. The two materials have different insulator-to-metal activation temperatures, leading to individually operating state control of each type of material. The proposed antenna consists of a microstrip feeding line, one driven patch and two sub-patches. Thanks to the design flexibility of the functional materials with arbitrary shapes, the antenna can be designed at 30 GHz. It can be a good candidate for millimeter-wave temperatures sensing applications.
End-fire Dual Polarized 5G Millimeter-Wave Antenna Array for Mobile Devices

A dual-polarized millimeter-wave antenna array for 5G mobile devices is proposed with end-fire radiation. Patch antenna is folded to reduce the height of the design. Two L-shaped probes are used to excite the TM01 and TM10 mode of the patch antenna separately to realize dual polarizations. A four-element array is simulated to estimate its scanning property and it achieves a stable realized gain at around 10 dBi with ±45 degrees scanning range. The proposed design is based on multi-layer LTCC technology which can be easily integrated with RF chips.
Assessment of Household Level Sanitation Practice of Mothers’ and Associated Factors in Gedeo Zone, South Ethiopia

Background: Provision of good and consistence sanitation practice plays an essential role in protecting human health to prevent communicable diseases. The aim of this study was to assess household level sanitation practice of mothers’ and associated factors in Gedeo Zone, South Ethiopia. Methods: Community based cross-sectional study design was conducted in Gedeo Zone, South Ethiopia. 634 systematically selected mothers were included in the study. Data was collected using structured questionnaire and entered into SPSS version 20.0 for analysis. Descriptive statistics were computed and logistic regression model was used to identify factors associated with outcome variable. Result: In the study only about 12.5% mothers were good sanitation practice. Majority of the mothers’ in the households, (68%) had shared toilet facility and almost all were simple traditional pit without a slab. From those mothers’ in the households with toilet facility, hand washing practices after critical period was reported to be 44.2%. Current study revealed that ethnicity, presence of hand washing near the latrine, source and protection of source of water supply had shown significant association. Conclusion: sanitation practice by mothers at household level in the study area was low. So health workers must pay special attention to improve this problem.
Review of Control Strategies for Lithium-ion Battery Energy Storage Systems in Distribution Networks

Increased adoption of distributed variable renewable energy (VRE) generation has created various challenges in maintaining a stable and reliable grid. Battery energy storage systems (BESS) can provide various services to assist utilities and system operators in managing the grid. This paper reviews literature on control strategies for Lithium-ion (Li-ion) BESS in distribution (Dx) networks, and identifies current research activities, trends, challenges and opportunities. The relevance of control strategies for BESS in the context of South Africa are presented. Furthermore, the paper serves as a starting point for the development of an operation framework that considers all the fundamental services that BESS can provide within various stakeholder and technical contexts.
A New Microstrip Reconfigurable Transversal Coupling Bandpass Filter with Highly Controllable Number and Positions of Transmission Zeros

This paper proposes a new microstrip reconfigurable transversal coupling bandpass filter that can change both the number and the positions of transmission zeros (TZs) in addition to center frequency and frequency bandwidth of passband. In conventional reconfigurable planar filters, TZs are not significantly moved from both sides to one side of passband, since the number of TZs and their positions are self-adaptive. The proposed filter simply has the parallel arrangement of even/odd-mode half-wavelength resonators, and a frequency-dependent source/load coupling. External Q factor and resonant frequency for each resonator are directly tuned by varactor diodes loaded for each. Thus, TZs can vanish, and up to three TZs can be generated at both sides/one side of passband. It is demonstrated through EM simulations and measurements that a center-frequency tuning of 1.13-1.69 GHz, 1-dB fractional-bandwidth control of 3.4-12.8%, highly controllable TZ positions, and switch-off state can be achieved by the proposed filter.
A Frequency Reconfigurable Flexible Antenna for Multiple Mobile Applications

A compact Co-Planar Waveguide fed frequency reconfigurable antenna is proposed. The antenna consists of a simple structure, with an arrow-shaped radiator and a matching stub to cover complete 5G sub-6 GHz band. The antenna is further connected to a rectangular patch to cover ISM band, while the inverted L shaped stubs are connected to this patch which further lowers the resonating frequency. Three diodes offer five different states of resonance and cover a single band at a time, which minimizes the effect of interference. The antenna is simulated using Electromagnetic solver, High-Frequency Structural Solver (HFSS) and results are compared with those of Microwave CST.
Implementation of the Extended Kalman Filter using MATLAB Symbolic Toolbox

This paper discusses the practical usage of the MATLAB Symbolic Toolbox for implementation of the Extended Kalman filter (EKF). We compare the overall time required for design of the filter and its execution time, which is a crucial parameter in real-time systems. The paper contains all programming code required to design the filter automatically, so it can be used to speed-up the design of the system and decrease the overall cost of the design.
Ni, Pt, and Ti stanogermanide formation on Ge0.92Sn0.08

The aim of this work is to provide a systematic and comparative study on the material characteristics and electrical contact performance for a germanium-tin (GeSn) alloy with a high percentage of Sn (8%). Thin metal films (10 nm) of Nickel (Ni), Titanium (Ti), or Platinum (Pt) were deposited on Ge0.92Sn0. 08 layers and subsequently annealed at different temperatures ranging from 300°C up to 500°C. Various experimental techniques were employed to characterize the metal morphology and the electrical contact behavior, with the intention of identifying the most promising metal candidate, in terms of low sheet resistance and low surface roughness, considering a low formation temperature. The investigations carried out show that for nano-electronic contact applications, nickel-stanogermanide (NiGeSn) turns out to be the most promising candidate among the three different metals analyzed. NiGeSn presents low sheet resistance combined with low formation temperatures, below 400°C; PtGeSn shows better thermal stability when compared to the other two options while, Ti was found to be unreactive below 500°C, resulting in incomplete TiGeSn formation.
Quality-Aware Human-Machine Text Extraction for Biocollections using Ensembles of OCRs

Information Extraction (IE) from imaged text is affected by the output quality of the text-recognition process. Misspelled or missing text may propagate errors or even preclude IE. Low confidence in automated methods is the reason why some IE projects rely exclusively on human work (crowdsourcing). That is the case of biological collections (biocollections), where the metadata (Darwin-core Terms) found in digitized labels are transcribed by citizen scientists. In this paper, we present an approach to reduce the number of crowdsourcing tasks required to obtain the transcription of the text found in biocollections' images. By using an ensemble of Optical Character Recognition (OCR) engines – OCRopus, Tesseract, and the Google Cloud OCR – our approach identifies the lines and characters that have a high probability of being correct. This reduces the need for crowdsourced transcription to be done for only low confidence fragments of text. The number of lines to transcribe is also reduced through hybrid human-machine crowdsourcing where the output of the ensemble of OCRs is used as the first "human" transcription of the redundant crowdsourcing process. Our approach was tested in six biocollections (2,966 images), reducing the number of crowdsourcing tasks by 76% (58% due to lines accepted by the ensemble of OCRs and about 18% due to accelerated convergence when using hybrid crowdsourcing). The automatically extracted text presented a character error rate of 0.001 (0.1%).
Frequency Divider Using Hybrid Transformer-based and Resistively Distributed Resonator

This paper presents a high-performance wide-band divide-by-2 injection-locked frequency divider (ILFD) in the 0.18 µm CMOS process. The ILFD consists of two sub-ILFDs. The first sub-ILFD designs a 4th order resistively distributed resonator, and the 2nd ILFD designs a 2nd order LC resonator. Two sub ILFDs use two transformers to inductively couple each other, and the ILFD employs a triple-resonance resonator with three resonant frequencies. The ILFD designs 3 frequency bands at 3.8 GHz, 3.4 GHz and 2.6 GHz by tuning the varactor capacitance. At low injection power, the ILFD designs three locking ranges correlative with the oscillation frequency bands. Overlapped locking range associated with two and three resonant frequencies are found when injection power of 0 dBm.
Development of Mathematical Models of Active Power and Voltage Regulators of Wind-Driven Power Plant

Algorithms for regulating active power and voltage of the wind-driven power plant connected to an electric power system are proposed. Electrical part of the wind-driven power plant consists of the synchronous generator with excitation from permanent magnets, the rectifier with artificial switching of valves and the autonomous voltage inverter. The developed automatic regulators complement the inverter control system. The operational efficiency of the proposed regulators in a wide range of rotation speeds of the wind turbine is shown.
A 38-GHz Sub-Harmonic I/Q Modulator Using LO Frequency Quadrupler in 65-nm CMOS

A 38 GHz modulator composed of a differential I/Q mixer and a high power frequency quadrupler in 65-nm CMOS for the 5G millimeter-wave (MMW) Tx application is presented. The 5 GHz LO feed is utilized which is compatible with the 5G sub-6 GHz system. In order to up-convert the 2 GHz IF signal to 38 GHz RF using the 5 GHz LO source, sub-harmonic mixers and frequency quadrupler are adopted. According to the measured results, the proposed modulator demonstrates a conversion gain of 2 dB and an OP1dBof −10 dBm over 37.5-38.5 GHz with 42-mW dc power dissipation ($P$DC) of the mixer and 120-mW $P$DC of the frequency quadrupler. The modulator performs −47-dBc 8LO-to-RF isolation and better than −32-dBc IRR. Furthermore, due to the high 8LO-to-RF isolation and IRR performances, the 64-quadratic-amplitude modulation (QAM) with 1.5 Gb/s data rate is successfully demonstrated at 38 GHz. The proposed 38 GHz modulator shows potential for the sub-6 GHz and MMW coexistent 5G system.
A Wideband Circularly Polarized Fabry-Perot Resonator Antenna with Chiral Metamaterial

This paper presents a wideband circularly polarized Fabry-Perot resonator antenna. We design a chiral metamaterial to make it the superstrate. The proposed chiral metamaterial transforms the linearly polarized wave to the circularly polarized wave over a wide bandwidth. In addition, the superstrate works as a partial reflective sheet to enhance the gains of the proposed antenna. The measurements show that the proposed design has a common bandwidth (|S11|<-10dB, AR<3dB, peak gain reduction<3dB) of 13.25 % and a peak gain of 14.76 dBic. The antenna has potential applications in satellite and radar communication systems.