Miracle-dz/UniFAR-FTUs huggingface dataset:
Linearity improvement of cascode low-noise amplifiers using double DS method with a tuned inductor

We propose a highly linear low-noise amplifier (LNA) using the double derivative superposition method with a tuned inductor. This topology has an auxiliary common gate stage of the cascode amplifier to cancel each third-order intermodulation distortion (IMD3) component and can provide a high third-order input intercept point (IIP3) for the 5.25 GHz frequency band. From the simulation results using the TSMC 0.18 μm RF CMOS process, the IIP3 in the proposed cascode LNAs can be improved by 9 dB, compared with the conventional derivative superposition method. The proposed LNA achieves an IIP3 of + 15 dBm with a gain of 10.5 dB, a noise figure of 2.4 dB, and a power consumption of 6 mA at 1.5 V.
Design improvements for an electret-based MEMS vibrational electrostatic energy harvester

This paper presents several improvements to the design of an electret-based MEMS vibrational electrostatic energy harvester that have led to a two orders of magnitude increase in power compared to a previously presented device. The device in this paper has a footprint of approximately 1 cm2 and generated 175 μW. The following two improvements to the design are discussed: the electrical connection principle of the harvester and the electrode geometrical configuration. The measured performance of the device is compared with simulations. When exited by sinusoidal vibration, a device employing the two design improvements but with a higher resonance frequency and higher electret potential generated 495 μW AC power, which is the highest reported value for electret-based MEMS vibrational electrostatic energy harvesters with a similar footprint. This makes this device a promising candidate for the targeted application of wireless tire pressure monitoring systems (TPMS).
Global analysis of DEF damage to concretes with and without fly-ash

Abstract Delayed Ettringite formation (DEF) is an internal expansive reaction that can damage concrete. DEF is strongly influenced by the temperature, above about 60-65°C, and other factors involving cement chemistry especially, but also its physical characteristics. The exposure environment over time also promotes a condition to increase deterioration from DEF. Expansions results from secondary ettringite formation are progressive and can lead concrete to microcracking impacting its performance and durability over time. Several concrete structures are pointed to be severely attacked by DEF, and test method as well a better comprehension on this pathology is necessary to promote specific and proper preventive measures to avoid future damages. Furthermore, compared to alkali-silica reaction, DEF occurs more readily and aggressively, and sometimes prematurely, depending on several factors, such as type of cement, concrete mix design, exposure conditions, among others. This paper involves an overall analysis of the behavior of concretes with two types of Portland cements (High early-strength cement and a Portland pozzolanic cement, with fly-ash) in relation to DEF process. Several data from a laboratory study where DEF was induced through a specific thermal curing procedure are presented and discussed. The analyses involved the assessment of physical, mechanical, and expansive properties besides microstructural monitoring of samples from concretes over time. These experiments allowed detecting high values of expansions from DEF (up to 1.2%) in the concrete without fly ash. The mechanical properties were severely impacted from this deleterious process; as expansions increased, losses in the mechanic and elastic properties were verified. Expansion levels in the order of 0.5% prompted remarkably high reductions and, at about 1% the losses were relevant for both strengths (tensile and compressive) and modulus of elasticity, of 60% and 80%, respectively, in the presence of cement without fly-ash. Concrete microstructure has indicated massive formations of ettringite as well as micro-cracking and the fragility of the cement matrix because of DEF. On the other hand, expansion up to 0.2% did not promote important negative effects on the properties of concrete, especially with the pozzolanic cement tested. Furthermore, an overall approach with several correlations between physical and mechanical properties was taken to obtain different levels of deterioration for a concrete presenting DEF.
Internal multiband surface‐mount monopole slot chip antenna for mobile phone application

A multiband monopole slot chip antenna surface‐mountable on the system circuit board of the mobile phone is presented. The antenna comprises two monopole slots of different lengths, which are folded and attached onto a foam base in the study. With a compact volume of 30 × 10 × 8 mm3 (2.4 cm3), the antenna can generate a lower band at about 900 MHz to cover GSM operation and a very wide upper band (bandwidth >1 GHz) to cover DCS/PCS/UMTS operation and 2.4 GHz WLAN operation. It is also promising to use a ceramic base of relative permittivity 7.8 to replace the foam base of the antenna. In this case, the antenna volume can be reduced to be 24 × 10 × 8 mm3 (1.92 cm3) only, yet still capable of covering GSM/DCS/PCS/UMTS quad‐band operation. The proposed antenna is studied, and obtained results are presented and discussed. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1273–1279, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23342
Factors Affecting the Application of the PBB Model: Review on the Theoretical Framework

The financial concern of managers at all levels is making decision based on the firm’s budgeting information. Indeed, management accounting is the process of identifying, measuring, analyzing, interpreting and communicating information to managers for the pursuit of an organization’s goals. One of the important techniques of management accounting is to involve the budgeting in guiding entities manage and use resources effectively. Currently, the most popular innovation trend in the public sector is performance-based budgeting (PBB). However, this budgeting model has not been widely applied in Vietnam and the application of the PBB model in other countries around the world is still facing many difficulties. Therefore, this article is trying to summarize previous studies and then using the theoretical background to study and predict the impact of contributing factors of the PBB application in the public entities in different countries.
A pFFT accelerated high order panel method

The theory and development of a precorrected Fast Fourier Transform (pFFT) accelerated, linear strength Panel Method is presented. The traditional approach is presented; however, direct and iterative solution methods are memory intensive and computationally costly. The pFFT algorithm reduces the complexity of the matrix vector product to O(nlogn), while attaining an 0(n) memory efficiency. As a result the overall solution scales with 0(knlogn), a significant improvement over 0(n3) and 0(n 2) unaccelerated approaches. The accelerated method shows a distinct improvement over iterative and direct methods. Prior to accelerated methods direct solution methods were limited by memory. Geometries in excess of 3,000-4,000 panels are the upper limit for analyses. The pFFT approach shows a significant improvement, allowing cases with 50,000-100,000 surface panels to be analysed. A method which computes both constant strength and linear strength panel integrals is presented. An investigation into the relative advantages of higher and lower order methods is performed. The linear strength panel integral approach is found to be slightly more computationally expensive (timewise) than the constant collocation scheme. It is determined that the computation of the three linear basis functions is 50 percent more expensive than computing a single constant strength panel integral. In addition, significant improvement in the simulation accuracy is attained, however, the convergence rate is limited by the flat panel discretization error. The implemented pFFT accelerated linear strength case is not memory optimal. Several suggestions are presented to facilitate more optimal memory usage. One of which facilitates a memory requirement of about 1 to the memory requirement of 2 3 the constant case, however is has a resulting overall time penalty. Thesis Supervisor: Jaime Peraire Title: Professor Thesis Supervisor: Jacob K. White Title: Professor 3
Detection System about Train Brake Discs' Cracks Based on Image Processing

The reliability of the brake disc is one of the main factors influencing running safety. This paper introduces the causes and harm of train brake disc crack, the application of digital image acquisition technology, and image processing function in MATLAB. We research a method of image preprocessing and subsequent processing by programming language, give effect drawing in each phase, and calculate the pixel size through effective extraction based on the crack characteristics. At last the condition of crack size and actual area is presented. The study can provide a reference for monitoring personnel replace the brake disc timely.
Source Camera Identification Based on In-and-Inter Channel Traces

Source camera detecting, which is about establishing whether or not the images of interest are taken by the same camera, is a challenging problem. Most CFA(color filter array) interpolation algorithm characterize the feature of camera which take the image. In this paper, we propose an improved algorithm. Instead of using inter-channel demosaicking/color interpolation traces, we first extract four in-and-inter-channel variance maps, respectively, and then extract the shape, similarity and difference features of maps for camera model identification. The experimental results show that the method had significantly improved the accuracy rate of source digital image identification.
Control System for Automatic Positioning the Working Device of Metamorphic Concrete Grouting Machine

In order to improve the automation level of the metamorphic concrete grouting machine, an automatic positioning control system was developed based on the knowledge of signal acquisition and hydraulic control technology with PLC and HMI. Angle sensors installed on the arms of the grouting machine and the grouting working device were used in this system. Firstly, users determine the reference position according to practical needs, and use the PLC to complete information collection and respective reference positions recording. Then, before the grouting starts, PLC makes a real-time detection and compares the positions of the excavator boom, arm and the grouting working device, and controls the hydraulic cylinders of the excavator sequentially to adjust the positions through electro-hydraulic proportional velocity regulating valve and solenoid control valves. This control system can realize automatic positioning.
A Novel Locally Prepared Inactivated Bivalent Mycoplasma Vaccine for Chicken Flocks in Egypt

| Mycoplasma is a vertically transmitted disease causing severe economic losses in poultry industry, so this study aimed to prepare a local inactivated a bivalent Mycoplasma gallisepticum (MG) and Mycoplasma synoviae (MS) vaccine. Vaccine was adjuvanted with Montanide ISA70 then evaluated for safety, sterility, and potency. The vaccine efficacy was evaluated in 50 SPF one day old chicks which divided into 5 groups 10 birds each. Chicks were vaccinated with 1st dose at 7 days of age and boostered with the 2nd dose after 3 weeks. Three weeks post vaccination with 2nd dose birds were challenged, chicks were kept under observations for 10 weeks. During the experiment data of clinical signs, daily mortality, body weight, postmortem, serum samples and nasal swabs were collected. serum samples were collected weekly after first vaccination till the third week after challenge and humoral immune response was estimated against Mycoplasma strains using the enzyme-linked immunosorbent assay (ELISA) test and results revealed that vaccines gave a high protective antibody titer, and the vaccine gave 80% protection against MG and 90% against MS. From our result locally prepared inactivated bivalent vaccine gave a promising result in birds protection against serious avian pathogens and considered as an effective tool for the prevention of mycoplasmosis in layers and breeders chicken farms in Egypt.
The Effects of Rainfall, Soil Type and Slope on the Processes and Mechanisms of Rainfall-Induced Shallow Landslides

Landslides are a serious geohazard worldwide, causing many casualties and considerable economic losses every year. Rainfall-induced shallow landslides commonly occur in mountainous regions. Many factors affect an area’s susceptibility, such as rainfall, the soil, and the slope. In this paper, the effects of rainfall intensity, rainfall pattern, slope gradient, and soil type on landslide susceptibility are studied. Variables including soil volumetric water content, matrix suction, pore water pressure, and the total stress throughout the rainfall were measured. The results show that, under the experimental conditions of this paper, no landslides occurred on a 5° slope. On a 15° slope, when the rainfall intensity was equal to or less than 80 mm/h with a 1 h duration, landslides also did not happen. With a rainfall intensity of 120 mm/h, the rainfall pattern in which the intensity gradually diminishes could not induce landslides. Compared with fine soils, coarser soils with gravels were found to be prone to landslides. As the volumetric water content rose, the matrix suction declined from the time that the level of infiltration reached the position of the matrix. The pore water pressure and the total stress both changed drastically either immediately before or after the landslide. In addition, the sediment yield depended on the above factors. Steeper slopes, stronger rainfall, and coarser soils were all found to increase the amount of sediment yield.
Future Study of Dense Superconducting Hydrides at High Pressure

The discovery of a record high superconducting transition temperature (Tc) of 288 K in a pressurized hydride inspires new hope to realize ambient-condition superconductivity. Here, we give a perspective on the theoretical and experimental studies of hydride superconductivity. Predictions based on the BCS–Eliashberg–Midgal theory with the aid of density functional theory have been playing a leading role in the research and guiding the experimental realizations. To date, about twenty hydrides experiments have been reported to exhibit high-Tc superconductivity and their Tc agree well with the predicted values. However, there are still some controversies existing between the predictions and experiments, such as no significant transition temperature broadening observed in the magnetic field, the experimental electron-phonon coupling beyond the Eliashberg–Midgal limit, and the energy dependence of density of states around the Fermi level. To investigate these controversies and the origin of the highest Tc in hydrides, key experiments are required to determine the structure, bonding, and vibrational properties associated with H atoms in these hydrides.
Longitudinal Trends of the Annual Exposure to PM2.5 Particles in European Countries

Background PM2.5 emission is known as a major challenge to environmental health and is the cause of approximately 7 million deaths annually. This study aimed at investigating the main patterns of PM2.5 trend changes among European countries. Methods The annual exposure to PM2.5 pollutants was retrieved from the World Bank for 41 countries during 2010 to 2017, and a latent growth model was applied to identify the main patterns using Mplus 7.4 software. Results Monitoring the overall mean annual exposure to PM2.5 in the Europe showed a downward pattern with an annual decrease of 2.48% during the study period. Turkey had the highest PM2.5 exposure with 43.82 μg/m3 in 2010, reaching 44.31 μg/m3 in 2017. Likewise, with 7.19 μg/m3 in 2010, Finland had the lowest exposure level which decreased to 5.86 μg/m3 in 2017. Two main patterns for the mean annual PM2.5 exposure were identified via the latent growth model. Countries in the first pattern, including Turkey and Ukraine, had experienced a slow annual increase in the mean exposure of PM2.5 pollutant. Likewise, the other 39 countries belonged to the second pattern with a moderate falling trend in the mean exposure to PM2.5. Conclusion Although the trend changes of mean annual exposure to PM2.5 in Europe were falling, Turkey and Ukraine had experienced a slow annual increase. It is advisable to take appropriate measures to curb the current raising exposure to PM2.5 in Turkey and Ukraine.
Are the deaf a disabled group, or a linguistic minority? Issues for librarians in Victoria’s public libraries

Presents a brief overview of the sociological forces shaping the discourse of disability; examines the part that public libraries have played, or failed to play, in addressing issues of exclusion as they relate to people with disabilities. Focuses on Australia’s deaf community and its particular informational needs. The low impact of the Disability Discrimination Act on public library services in Victoria is examined and comparisons made with some American public library initiatives. The author suggests improvements to services to individuals with disabilities including the deaf, and the importance of public libraries formulating Action Plans which address the issue of exclusion, is discussed.
Shoe-Mounted Personal Navigation System Based on MEMS

Shoe-mounted personal navigation system(PNS) based on MEMS is presented aiming at locating a person. Large error remains a problem in a standalone navigation system that uses only low cost MEMS IMU. This paper therefore proposes a approach which integrated with ZUPT and compass heading information in Kalman-based framework. The filter propagates and estimates the errors during the stance phase, which are fed back to the INS for compensating the accumulated error during walking. Finally, the performance of the proposed algorithm are verified by outdoors actual walking experiments of closed-loop path, were undertaken on campus of Northwestern Polytechnical University. The results show that the accuracy of positioning were almost always below 1% of the total traveled distance.
Deep Cascade Networks for Single 2D US Slice to 3D CT/MRI Image Registration

Background and Objective: Ultrasound (US) devices are often used in percutanous interventions. Due to their low image quality, the US image slices are aligned with pre-operative Computed Tomography/Magnetic Resonance Imaging (CT/MRI) images to enable better visibilities of anatomies during the intervention. This work aims at improving the deep learning one shot registration by using less loops through deep learning networks.Methods: We propose two cascade networks which aim at improving registration accuracy by less loops. The InitNet-Regression-LoopNet (IRL) network applies the plane regression method to detect the orientation of the predicted plane derived from the previous loop, then corrects input CT/MRI volume orientation and improves the prediction iteratively. The InitNet-LoopNet-MultiChannel (ILM) comprises two cascade networks, where an InitNet is trained with low resolution images toperform coarse registration. Then, a LoopNet wraps the high resolution images and result of the previous loop into a three channel input and trained to improve prediction accuracy in every loop. Results: We benchmark the two cascade networks on 1035 clinical images from 52 patients , yielding an improved registration accuracy with LoopNet. The IRL achieved an average angle error of 13.3° and an average distance error of 4.5 millimieter. It out-performs the ILM network with angle error 17.4° and distance error 4.9 millimeter and the InitNet with angle error 18.6° and distance error 4.9 millimeter. Our results show the efficiency of the proposed registration networks, which have the potential to improve the robustness and accuracy of intraoperative patient registration.
Cell Cycle-Dependent Recruitment of FtsN to the Divisome in Escherichia coli

Cell division in most bacteria starts with the formation of an FtsZ protofilament network at midcell, the Z ring. However, cells only start to constrict after a considerable lag. ABSTRACT Cell division in Escherichia coli starts with the formation of an FtsZ protofilament network at midcell, the Z ring. However, only after a considerable lag period does the cell start to form a midcell constriction. The onset of constriction depends upon the arrival of so-called late divisome proteins, among which, FtsN is the last essential one. The timing and dependency of FtsN arrival to the divisome, along with genetic evidence, suggests it triggers cell division. In this study, we used high-throughput fluorescence microscopy to determine the arrival of FtsN and the early divisome protein ZapA to midcell at a single-cell level during the cell cycle. Our data show while the recruitment of ZapA/FtsZ is gradual in the cell cycle, recruitment of FtsN is rapid and begins at about the onset of constriction. At this time, the fraction of ZapA/FtsZ in the Z ring approaches its peak value. We also find a second increase in FtsN recruitment to the divisome, which begins once the amount of ZapA/FtsZ at midcell starts decreasing. Increasing hypermorphic FtsA* (FtsA R286W), but not FtsA, accelerates FtsN recruitment but not constriction. This finding is consistent with FtsA* recruiting FtsN with some other divisome component being rate-limiting for constriction under these conditions. Finally, our data support the recently proposed idea that ZapA/FtsZ and FtsN are part of physically separate complexes in midcell throughout the whole septation process. IMPORTANCE Cell division in most bacteria starts with the formation of an FtsZ protofilament network at midcell, the Z ring. However, cells only start to constrict after a considerable lag. A factor thought to trigger the onset of constriction in Escherichia coli is FtsN, which is the last essential protein to be recruited to the Z ring. Using a high-throughput quantitative fluorescence microscopy, we determine the cell cycle-dependent recruitment of FtsN to the Z ring. Our data show rapid accumulation of FtsN to the Z ring about a quarter of the cell cycle after the formation of the Z ring. This initial wave is followed by another increase in FtsN recruitment once the FtsZ protofilament network starts to disassemble. The presence of FtsA* accelerates FtsN recruitment to the Z ring but does not lead to earlier constrictions. Our data furthermore suggest FtsZ and FtsN are part of physically separate complexes throughout the division process.
Beam Design Force Demands in Steel Plate Shear Walls with Simple Boundary Frame Connections

AbstractWhere simple beam-to-column connections are used in the boundary frame of a steel plate shear wall and the tension fields in the infill plates are assumed to be uniform and at the yield stress for capacity design, the moment and shear force distributions in each beam are statically determinate, while the axial force distribution is highly indeterminate and depends on several contributing factors. In this paper, in addition to quantifying appropriate moment and shear force distributions for use in design, a simple but powerful analysis method is presented for evaluating the beam’s axial force demand. The method is based on the principle of capacity design and nonlinear finite element simulations of wall systems with different numbers of stories, infill plate aspect ratios and thicknesses, and lateral load distributions. The axial force demands are highly dependent on the mechanism of load transfer to the system from the floor and roof diaphragms and the shear force distribution in the compression c.