Miracle-dz/UniFAR-FTUs huggingface dataset:
Reconfigurable Square-Ring Microstrip Antenna

A reconfigurable design for a dual-feed square-ring microstrip patch antenna is described. The dual feeds are used to excite two orthogonal modes of the antenna, and each feed network is composed of a coupling patch, an impedance transformer, and a variable capacitor. In addition, the two feeds are connected to a single input port through a T-junction power divider. The proposed design can perform polarization diversity at different frequencies by tuning the capacitance values of the two capacitors. A prototype integrating with a pair of varactor diodes and related dc bias circuits is constructed. Typical experimental results are shown along with numerical simulation results. Both of them demonstrate that the prototype can provide one linear polarization and two circular polarizations at one operating frequency; moreover, the operating frequency can also be tuned to adjacent frequencies.
Tracking Ball and Players with Applications to Highlight Ranking of Broadcasting Table Tennis Video

This paper presents an algorithm of automatically ranking the highlight levers for broadcasting table tennis games. We rank the highlight lever according to some extracted high-lever semantic features, including the table position, the player action and the ball trajectory. The table is located by the edge and color features in a rough-fine procedure, while the player is tracked by the changing mask and a trajectory analysis. To derive the ball trajectory, all ball candidates are first detected using color, shape, size and position limits. Then both the motion and appearance information are employed to track the ball by a Bayesian decision framework. The ball's dynamic and appearance parameters are updated by a Kalman filter and an incremental Bayesian algorithm. With those semantic features, we rank the basic highlight lever with the feature statistic and measure the quality of the game from a fuzzy system.
Real-time selective encryption solution based on ROI for MPEG-A visual identity management AF

As part of a new MPEG-A standardization activity, called Visual Identity Management Application Format (VIMAF), this paper presents an end-to-end encryption solution of Region of Interest (ROI) in both AVC and HEVC encoded streams for privacy protection applications. This solution uses a selective encryption method that encrypts only the most sensitive information of the video and proposes a new adapted syntax in order to facilitate interoperability between equipment. Objective video quality measurements have shown the robustness of the proposed selective encryption solution with only a slight bitrate increase.
Tuning loop : control performance and diagnostics

This article intends presenting an innovative solution for controlling the performance of tuning loops. The software product has been designed to enable process managers to recover profit margins through the systematic monitoring and adjustment of the performance of the basic control system. To achieve this aim, technologies and methods are systematically used that have been developed in research and development laboratories on the basis of the results produced over the past 15 years in the fields of control engineering and information technology.
Nonnucleoside Pyrrolopyrimidines with a Unique Mechanism of Action against Human Cytomegalovirus

ABSTRACT Based upon a prior study which evaluated a series of nonnucleoside pyrrolo[2,3-d]pyrimidines as inhibitors of human cytomegalovirus (HCMV), we have selected three active analogs for detailed study. In an HCMV plaque-reduction assay, compounds 828, 951, and 1028 had 50% inhibitory concentrations (IC50s) of 0.4 to 1.0 μM. Similar results were obtained when 828 and 951 were examined by HCMV enzyme-linked immunosorbent assay (IC50s = 1.9 and 0.4 μM, respectively) and when 828 was tested in a viral DNA-DNA hybridization assay (IC50 = 1.3 μM). In yield-reduction assays with a low multiplicity of infection (MOI), all three compounds caused multiple log10 reductions in virus titer, and the activities of these compounds were comparable to the activity of ganciclovir (GCV; IC90 = 0.2 μM). In contrast to the reduction of viral titers by GCV, the reduction of viral titers by 828, 951, and 1028 decreased with increasing MOI. Cytotoxicity in human foreskin fibroblasts and KB cells ranged from 32 to >100 μM. In addition, 828 (the only compound tested) was less toxic against human bone marrow progenitor cells than GCV. Time-of-addition and time-of-removal studies established that the three pyrrolopyrimidines inhibited HCMV replication before GCV had an effect on viral DNA synthesis but after viral adsorption. Compound 828 was equally effective against GCV-sensitive and GCV-resistant HCMV clinical isolates. Combination studies with 828 and GCV showed that the effects of the two compounds on HCMV were additive but not synergistic. Taken together, the data indicate that these pyrrolopyrimidines target a viral protein that is required in an MOI-dependent manner and that is expressed early in the HCMV replication cycle.
Microscopic insights into the protein-stabilizing effect of trimethylamine N-oxide (TMAO)

Significance The ability of trimethylamine N-oxide (TMAO) to counteract osmotic stress along with the deleterious effects of denaturants such as urea is fascinating and has inspired many studies. To further our understanding of how TMAO acts to stabilize folded proteins, we carry out an infrared experiment designed to probe the microscopic details of this action explicitly from the perspective of the solute molecule. Our results reveal that the protein-stabilizing effect of TMAO originates from two contributions: One is entropic and the other is enthalpic in nature. Thus, this study provides not only microscopic details underlying the stabilizing action of TMAO, but also a method that can be used to study the stability-perturbing effect of other cosolvents. Although it is widely known that trimethylamine N-oxide (TMAO), an osmolyte used by nature, stabilizes the folded state of proteins, the underlying mechanism of action is not entirely understood. To gain further insight into this important biological phenomenon, we use the C≡N stretching vibration of an unnatural amino acid, p-cyano-phenylalanine, to directly probe how TMAO affects the hydration and conformational dynamics of a model peptide and a small protein. By assessing how the lineshape and spectral diffusion properties of this vibration change with cosolvent conditions, we are able to show that TMAO achieves its protein-stabilizing ability through the combination of (at least) two mechanisms: (i) It decreases the hydrogen bonding ability of water and hence the stability of the unfolded state, and (ii) it acts as a molecular crowder, as suggested by a recent computational study, that can increase the stability of the folded state via the excluded volume effect.
Microelectronics thin films and boundaries characterized by local electro-thermal measurements

Heat dissipation is one of the main challenges faced by microelectronics due to the increase of integration density. From Silicon-On-Insulator (SOI) technology to 3D-stacked technologies, accurate thermal models are needed to quantify the thermal performances of new devices/packages. Several materials (SiO2, SiN) and thicknesses (from 30 to 540 nm), typically used in the advanced-interconnect levels of microelectronics, are thermally characterized in order to account for heat transport phenomena linked to thermal boundary resistances and ballistic conduction. A mid-term goal is to develop a large library of effective thermal conductivities of materials used in microelectronics. To measure thin-film thermal conductivities, we assess nanometer-scale tip Scanning Thermal Microscopy (SThM), a technique based on atomic force microscopy, where a self-heated electrical resistance is added at the probe apex. To analyze the experimental data, finite-element simulations of the probe-sample interaction are performed in order to reproduce numerically the experiments. SThM technique can be more sensitive to contact conductances than to effective thermal conductivities, even for samples with thin layers of SiN and SiO2. Additional characterization of the tip-sample contact should provide a better estimation of conductivities.
The Speakers in the Wild (SITW) Speaker Recognition Database

The Speakers in the Wild (SITW) speaker recognition database contains hand-annotated speech samples from open-source media for the purpose of benchmarking text-independent speaker recognition technology on single and multi-speaker audio acquired across unconstrained or “wild” conditions. The database consists of recordings of 299 speakers, with an average of eight different sessions per person. Unlike existing databases for speaker recognition, this data was not collected under controlled conditions and thus contains real noise, reverberation, intraspeaker variability and compression artifacts. These factors are often convolved in the real world, as the SITW data shows, and they make SITW a challenging database for singleand multispeaker recognition
Molecular Identification and Antifungal Susceptibility Testing of Clinical Isolates of the Candida rugosa Species Complex and Proposal of the New Species Candida neorugosa

ABSTRACT Candida rugosa is a poorly known fungal species occasionally involved in human infections. A molecular analysis of the sequences of the D1/D2 domains and the internal transcribed spacer (ITS) region of the ribosomal genes of 24 clinical isolates phenotypically identified as C. rugosa demonstrated that only 10 (41.6%) isolates belonged to that species. The other isolates were identified as Candida pararugosa (41.6%) and Candida pseudorugosa (8.3%). The remaining two isolates, from human and equine infections, respectively, were clearly different from the others and represent a new species proposed here as Candida neorugosa. The closest species by D1/D2 sequences was the type strain of C. rugosa, with only 92.3% similarity. C. neorugosa can also be differentiated from all other species of the C. rugosa complex by phenotypic features. The eight antifungal drugs tested showed high in vitro activity against the 24 isolates included in the study.
Stepped frequency radar for automotive application: Range-Doppler coupling and distortions analysis

In this paper, the use of the stepped frequency modulation for an automotive application is studied. This modulation suffers from range-Doppler coupling and quadratic phase variations. To address this issue, a repetitive modulation scheme is used. To remain at a low computational cost, the choice is made to base the range and velocity estimation on IDFTs, thereby making the range-Doppler coupling and quadratic phase variations distortions. The effects of these distortions are studied and a compensation method is introduced. The performance of the compensation method is illustrated by means of simulation results.
Frames in the Bargmann Space of Entire Functions

We look at the decomposition of arbitrary f in L2(R) in terms of the family of functions cp,,(x) = w-'/*exp{ - iimnab + iman - i(x - nb)2}, with a, b > 0. We derive bounds and explicit formulas for the minimal expansion coefficients in the case where ab = 2w/N, N an integer 2 2. Transported to the Hilbert space F of entire functions introduced by V. Bargmann, these results are expressed as inequalities of the form
Current control of three-phase grid-connected PV inverters using adaptive PR controller

In recent years, there has been a rapid increase in the number of grid connected three phase inverter systems being connected to the distribution network. As a result, the need for high quality, low harmonic distortion, current injection into the grid is essential. To achieve this, careful consideration of the inverter controller is necessary. Many control methods are based on the traditional proportional-integral controller (PI), or the more recently adopted Proportional Resonant controller (PR). This paper presents a new technique of minimizing the error of the current control in a three phase grid connected inverter using a readily implementable Adaptive Proportional Resonance controller. Simulation and experimental results demonstrate the effectiveness of the proposed technique.
Thermo-visual video fusion using probabilistic graphical model for human tracking

This paper presents a graphical model approach that fuses thermal infrared (IR) and visible spectrum video for human tracking. The proposed model uses unobserved variables to describe the data in terms of the process that generates them. It is thus able to capture and exploit the statistical structure of the IR and the visible data separately, as well as their mutual dependencies. Model parameters are learned form data using the expectation maximization (EM) algorithm. Automatic calibration is performed as part of this procedure. Tracking is done by Bayesian inference of the object location from the observed data. The effectiveness of the proposed method is demonstrated by the experimental results on the video clips captured in real world scenarios.
Equine Infectious Anemia Virus Gag Polyprotein Late Domain Specifically Recruits Cellular AP-2 Adapter Protein Complexes during Virion Assembly

ABSTRACT We have identified an interaction between the equine infectious anemia virus (EIAV) late assembly domain and the cellular AP-2 clathrin-associated adapter protein complex. A YXXL motif within the EIAV Gag late assembly domain was previously characterized as a sequence critical for release of assembling virions. We now show that this YXXL sequence interacts in vitro with the AP-50 subunit of the AP-2 complex, while the functionally interchangeable late assembly domains carried by the Rous sarcoma virus p2b protein and human immunodeficiency virus type 1 p6 protein, which utilize PPPY and PTAPP L domains, respectively, do not bind AP-50 in vitro. In addition, EIAV late domain mutants containing mutations that have previously been shown to abrogate budding also exhibit marked decreases in AP-50 binding efficiencies. A role for AP-2 complex in viral assembly is supported by immunofluorescence analysis of EIAV-infected equine dermal cells demonstrating specific colocalization of the α adaptin subunit of AP-2 with the EIAV p9 protein at sites of virus budding on the plasma membrane. These data provide strong evidence that EIAV utilizes the cellular AP-2 complex to accomplish virion assembly and release.
Combination of infliximab and methotrexate therapy for early rheumatoid arthritis: a randomized, controlled trial.

OBJECTIVE To compare the benefits of initiating treatment with methotrexate (MTX) and infliximab (anti-tumor necrosis factor alpha [anti-TNFalpha] monoclonal antibody) with those of MTX treatment alone in patients with rheumatoid arthritis (RA) of < or =3 years' duration. METHODS RA patients were eligible if they had active disease and no prior treatment with MTX or a TNFalpha inhibitor. One thousand forty-nine patients were randomly assigned in a 4:5:5 ratio to 3 treatment groups: MTX-placebo, MTX-3 mg/kg infliximab, and MTX-6 mg/kg infliximab. MTX dosages were rapidly escalated to 20 mg/week, and infliximab or placebo infusions were given at weeks 0, 2, and 6, and every 8 weeks thereafter through week 46. RESULTS At week 54, the median percentage of American College of Rheumatology improvement (ACR-N) was higher for the MTX-3 mg/kg infliximab and MTX-6 mg/kg infliximab groups than for the MTX-placebo group (38.9% and 46.7% versus 26.4%, respectively; P < 0.001 for both comparisons). Patients in the MTX-3 mg/kg infliximab and MTX-6 mg/kg infliximab groups also showed less radiographic progression than those receiving MTX alone (mean +/- SD changes in van der Heijde modification of the total Sharp score at week 54: 0.4 +/- 5.8 and 0.5 +/- 5.6 versus 3.7 +/- 9.6, respectively; P < 0.001 for each comparison). In addition, physical function improved significantly more in the MTX-3 mg/kg infliximab and MTX-6 mg/kg infliximab groups than in the MTX-placebo group. Infliximab therapy was associated with a significantly higher incidence of serious infections, especially pneumonia. CONCLUSION For patients with active RA in its early stages, combination therapy with MTX and infliximab provides greater clinical, radiographic, and functional benefits than treatment with MTX alone.
System design of electric assisted bicycle using EDLCs and wireless charger

This paper discusses an electric assisted bicycle which uses electric double layer capacitors (EDLCs) as a power source. EDLCs are charged through a rapid charger by using wireless power transmission. In this paper, first, the energy capacity of EDLCs is designed. Next, the antenna for the wireless power transmission and the charger are investigated. Third, this paper compares the volume and the power loss of the three kinds of DC-DC converters which are step-down type, boost-type and buck-boost type for the charging and discharging of EDLCs. As a result, boost-type is the most compact in the power capacity of the electric assisted bicycle. Finally, the proposed system is experimentally verified as a prototype. As a result, the proposed system can shorten to 1/4 the charging time of the conventional system.
Identifying Classes in Legacy JavaScript Code

JavaScript is the most popular programming language for the Web. Although the language is prototype‐based, developers can emulate class‐based abstractions in JavaScript to master the increasing complexity of their applications. Identifying classes in legacy JavaScript code can support these developers at least in the following activities: (1) program comprehension; (2) migration to the new JavaScript syntax that supports classes; and (3) implementation of supporting tools, including IDEs with class‐based views and reverse engineering tools. In this paper, we propose a strategy to detect class‐based abstractions in the source code of legacy JavaScript systems. We report on a large and in‐depth study to understand how class emulation is employed, using a dataset of 918 JavaScript applications available on GitHub. We found that almost 70% of the JavaScript systems we study make some usage of classes. We also performed a field study with the main developers of 60 popular JavaScript systems to validate our findings. The overall results range from 97% to 100% for precision, from 70% to 89% for recall, and from 82% to 94% for F‐score.
A comparative regional analysis of coronary atherosclerosis and calcium score on multislice CT versus myocardial perfusion on SPECT.

UNLABELLED For the noninvasive evaluation of coronary artery disease (CAD), both multislice CT and gated SPECT are available. How these 2 modalities relate, however, is yet unclear. The purpose of this study was to perform a head-to-head comparison of the results of multislice CT and gated SPECT on a regional basis (per vessel distribution territory) in patients with known or suspected CAD. METHODS One hundred forty patients underwent both multislice CT for coronary calcium scoring and coronary angiography and gated SPECT for myocardial perfusion imaging. The coronary calcium score was determined for each coronary artery. Coronary arteries on multislice CT angiography were classified as having no CAD, insignificant stenosis (<50% luminal narrowing), significant stenosis, or total or subtotal occlusion (>/=90% luminal narrowing). Gated SPECT findings were classified as normal or abnormal (reversible or fixed defects) and were allocated to the territory of one of the various coronary arteries. RESULTS In coronary arteries with a calcium score of 10 or less, the corresponding myocardial perfusion was normal in 87% (n = 194/224). In coronary arteries with extensive calcifications (score > 400), the percentage of vascular territories with normal myocardial perfusion was lower, 54% (n = 13/24). Similarly, in most of the normal coronary arteries on multislice CT angiography, the corresponding myocardial perfusion was normal on SPECT (156/175, or 89%). In contrast, the percentage of normal SPECT findings was significantly lower in coronary arteries with obstructive lesions (59%) or with total or subtotal occlusions (8%) (P < 0.01). Nonetheless, only 48% of vascular territories with normal perfusion corresponded to normal coronary arteries on multislice CT angiography, whereas insignificant and significant stenoses were present in, respectively, 40% and 12% of corresponding coronary arteries. CONCLUSION Although a relationship exists between the severity of CAD on multislice CT and myocardial perfusion abnormalities on SPECT, analysis on a regional basis showed only moderate agreement between observed atherosclerosis and abnormal perfusion. Accordingly, multislice CT and gated SPECT provide complementary rather than overlapping information, and further studies should address how these 2 modalities can be integrated to optimize patient management.
Diabetes, Inflammation, and Functional Decline in Older Adults

OBJECTIVE—Age, diabetes, and elevated inflammatory markers independently increase the risk of functional decline. We examined the effect of C-reactive protein (CRP) and interleukin-6 (IL-6) on the incident mobility limitation in older adults with and without diabetes. RESEARCH DESIGN AND METHODS—We analyzed data from a cohort of 2,895 well-functioning adults aged 70–79 years, followed for development of persistent functional limitation over 3.5 years. Participants were assessed for the presence of diabetes according to fasting glucose and/or hypoglycemic medication use and were divided into three equal groups (tertiles) according to level of CRP or IL-6. Persistent functional limitation was defined as difficulty climbing 10 steps or walking one-quarter mile on two consecutive semiannual assessments. RESULTS—At baseline, 702 participants (24%) had diabetes. CRP values were (median ± SD) 2.8 ± 4.4 versus 3.7 ± 5.4 for those with normal glucose and diabetes, respectively (P < 0.001). The unadjusted incidence of functional limitation associated with increased levels of CRP and IL-6 was greater among participants with diabetes. After adjusting for clinical and demographic covariates, persistent functional limitation for the highest tertile was greater compared with that for the lowest tertile of CRP or IL-6 for those with and without diabetes. CRP hazard ratios (HRs) were 1.7 (95% CI 1.2–2.3) versus 1.4 (1.1–1.6), respectively. IL-6 HRs were 1.8 (1.3–2.5) versus 1.6 (1.4–2.0), respectively. CONCLUSIONS—In initially high-functioning older adults, those with diabetes and higher inflammatory burden had an increased risk of functional decline. Interventions at early stages to reduce inflammation may preserve function in these individuals.