Miracle-dz/UniFAR-FTUs huggingface dataset:
A 0.6-V 82-dB 28.6- W Continuous-Time

The design of a low-voltage low-power fourth-order single-bit continuous-time Delta-Sigma modulator is presented in this paper for audio applications. The modulator employs an input-feedforward topology in order to reduce internal signal swings, thus relaxes the linearity and slew rate requirements on amplifiers leading to low-voltage operation and low-power consumption. The energy efficiency is further improved by em- bedding the summation of feedforward paths into the quantizer. For low-voltage operation, a gain-enhanced fully-differential amplifier and a body-driven rail-to-rail input CMFB circuit are developed. The modulator, implemented in a 0.13- ms tandard CMOS technology with ac ore area of 0.11 mm ,a chieves an 82-dB dynamic range (DR), and a 79.1-dB peak signal-to-noise and distortion ratio (SNDR) over a 20-kHz signal bandwidth. The power consumption of the modulator is 28.6 W under a 0.6-V supply voltage. The achieved performance make it one of the best among state-of-the-art sub-1-V modulators in terms of two widely used figures of merit.
Performance-drivenDual-railInsertionforChip-levelPre-fabricated Design

In recent years, pre-fabricated design styles grow up rapidly to amortize the mask cost. However, the interconnection delay of the pre-fabricated design styles slows down the circuit performance due to the high capacitive load. In this paper, we propose a technique to insert dual-rail wires for prefabricated design styles. Furthermore, we propose an effective dual-rail insertion algorithm to reduce the routing area overheads caused by the inserted dual-rail wires. Taking the wire criticality, the delay significance, and the wire congestion into consideration, our proposed algorithm is capable of trading additional routing area overheads for the interconnection performance improvement. The experimental results demonstrate that our proposed algorithm reduces the interconnection delay by 11.4% with 5.8% routing area overheads. I. INTRODUCTION
Live: Synchronous Computing in Robot Driven Design

Challenging our contemporary understanding of representation and simulation in architecture SCI-Arc has been developing a unique digital/physical design platform where the relationships between humans, machines and matter are constantly in flux re-calibrating, reshuffling, reordering aligning digital and physical and vis versa. The robot as a technology takes an important role in these new ideation environments. “Live” is an applicaton which enables real-time robotic control and grants the robot substantial agency situating it as an interactive design tool that immediately responds to designed signal and sensor inputs in its environment. Current research explores interactive environments, gesture based human-machine interactions and autonomous agent driven design programs.
Design of Continuous Indoor Navigation System Based on INS and Wifi

The application of navigation, such as guidance of pedestrians, requires a certain accuracy of continuous outdoor and indoor positioning. In outdoor environments GPS system has proved to be effective. However in indoor it is challenging to control the accuracy within 2 to 3 meters. At present several approaches have been developed for indoor positioning, such as RFID. But they are mainly been implemented in professional areas, for general user such as tourists and visual incapable users it is difficult to take advantage of these technologies because of the high price of terminal and the navigation service covered area is extremely limited. In this paper, a new approach of indoor navigation method is proposed to solve the problems of traditional methods. It is based on INS and wifi positioning technology. As hardware, wifi receiver, smart phone built-in accelerometer and digital compass are selected and investigated. User’s indoor position is first estimated by dead reckoning method with INS navigation system and then be recalibrated by wifi position information. Several experiments performed in the test verified the effectiveness of this indoor continuous positioning method described in this paper.
Using the Augmented Reality 3D Technique for a Convex Imaging Experiment in a Physics Course

Augmented Reality (AR) provides new possibilities for simulating teaching environments, experiencing teaching processes and promoting teaching interaction through certain teaching approaches, including virtual-real blended, real-time interactive or three-dimensional immersive. This paper first briefly introduces the present research status of implementing AR in education and then illustrates the 3D AR learning environment and the long-distance augmented video system. Furthermore, we explain a specific case in which the convex lens image-forming experiment was adopted as the material and we conducted an interactive and integrated image-forming experiment using AR technology to improve teaching. The case study was mainly to investigate the learning attitudes of the experimental group students by using AR instructional applications and to compare the difference in the learning achievements of eighth graders with the convex lens imageforming experiment in two learning environments. The mean scores of the experimental group increased more significantly than the mean scores of the control group; however, there appeared to be no significant difference in the mean scores between the two groups in post-tests. In addition, most students were found to have positive attitudes towards using AR for their learning in physics courses: they believe that AR instructional applications hold their attention and increase their learning motivation in physics courses. The results show that this learning environment that blends reality with virtuality will greatly stimulate the learning interests of students and promote their level of activity, suggesting significant potential for this learning application in practice.
A direct torque controller for permanent magnet synchronous motor drives

This paper presents a direct torque control scheme for permanent magnet synchronous motor (PMSM) drives, where current controllers followed by PWM or hysteresis comparator are not used. The switching table specific for a PMSM is derived. The experimental results show that the torque response is extremely fast and that the position sensor is not essential for the inner torque loop.
during the course of the experiments.

This letter describes a microwave circuit designed to increase the injection-locking capabilities of Gunn oscillators as well as to reduce the frequency modulation resulting from bias voltage fluctuations. Tests made with this circuit indicate that for a given ratio of injection-locking signal to oscillator signal, an increase by a factor of 10 in the locking range is possible; conversely, for a given locking range, the necessary signal required for locking can be reduced by a factor of 10. Furthermore, the addition of a phase-sensing feedback loop reduces the frequency sensitivity of the Gunn oscillator and leads to an improved output spectrum of the cavity oscillator. The elements of the K-band system used in the stabilization studies are shown schematically in Fig. 1. The principal microwave components consist of a Gunn-effect cavitycontrolled oscillator operating at 22 GHz, a reference klystron (2K33) which furnishes the injection-locking signal, and a four-port hybrid (magic Tee) which measures the relative phase of the Gunn and reference oscillator signals. A phase shifter inserted in the reference waveguide arm adjusts the microwave signals incident on ports 1 and 2 of the hybrid Tee for phase quadrature, as required for operation of the Tee as a phase discriminator. This configuration furnishes an error signal from the detector outputs at ports 3 and 4 which is a function of the phase difference between the signals incident on ports 1 and 2 on the Tee. The error signal is subsequently amplified with a difference amplifier and then added to the bias voltage of the Gum diode. The phase discriminator error signal is proportional to sin [4+(2nA1/1J], where the argument is the sum of the phase shift 4 between the GUM oscillator and the injectionlocking signal, and the term 2aAl/i, is proportional to the path length difference AI between point (I and ports 1 and 2. In the actual circuit, the path length difference was relatively small and had negligible effect on the discriminator characteristic. The angle 4, by which the injection-locking field leads the synchronized oscillator field, is given’ by
Microwave power amplifiers with digitally-controlled power supply voltage for high efficiency and high linearity

A power amplifier architecture is presented which comprises a basic amplifier with an efficient, high modulation bandwidth DC-DC converter. The amplifier and the DC-DC converter are controlled by a digital signal processor that provides input signal pre-distortion, supply voltage optimization and equalization. Experimental results at 950 MHz showed ACPR values acceptable for IS-95 CDMA handset applications. With variable power supply, the overall efficiency improved by a factor of 1.4/spl times/ (when averaged over representative conditions of usage).
Early Myocardial Changes in Patients with Rheumatoid Arthritis without Known Cardiovascular Diseases—A Comprehensive Cardiac Magnetic Resonance Study

Clinically silent cardiac disease is frequently observed in rheumatoid arthritis (RA), and cardiovascular complications are the leading cause of mortality in RA. We sought to evaluate the myocardium of young RA patients without known cardiac disease using cardiac magnetic resonance (CMR), including T1/T2 mapping sequences. Eighteen RA patients (median age 41 years, 83% females) mainly with low disease activity or in remission and without any known cardiovascular disease were prospectively included to undergo CMR. A control group consisted of 10 sex- and age-matched patients without RA or any known structural cardiovascular disease. Heart chambers size and left/right ventricular systolic function were similar in patients with RA and controls. Signs of myocardial oedema were present in up to 39% of RA patients, including T2 time above cut-off value in 7 patients (39%) in comparison to none of the controls (p = 0.003) and T2 signal intensity ratio above the cut-off value in 6 patients (33%) and in none of the controls (p = 0.06). Extracellular volume was similar in both groups signifying a lack of diffuse fibrosis in studied group of RA patients. There were also no signs of late gadolinium enhancement (LGE) in either group except for one patient with RA who was found to have prior silent myocardial infarction. No correlation was found between markers of disease severity and markers of oedema observed on CMR in patients with RA. Nevertheless, patients with increased T2 time (≥50 ms) were more likely to have X-ray erosions (p = 0.02) and a longer duration between symptom onset and diagnosis (p = 0.02). Finally, there were no significant arrhythmias on 24-h ECG Holter monitoring in RA patients. CMR features of myocardial oedema without signs of myocardial fibrosis were found in 39% of young RA patients without known heart disease or cardiac symptoms. Presence of myocardial oedema was associated with X-ray erosions and a longer duration between symptom onset and diagnosis. The clinical significance of the observed early myocardial changes accompanying RA requires additional studies.
Lower extremity kinematic and kinetic differences in runners with high and low arches

High- and low-arched feet have long been thought to function differently. The purpose of this study was to investigate the relationship between arch structure and lower extremity mechanics in runners with extreme pes planus and pes cavus. It was hypothesized that low-arched individuals would exhibit an increased rearfoot eversion excursion, eversion/tibial internal rotation ratio, and increased angular velocity in rearfoot eversion when compared to high-arched runners. In addition, it was hypothesized that high-arched runners would exhibit greater vertical loading rates. Twenty high-arched and 20 low-arched runners with histories of running-related injuries were included in this study. Low-arched runners were found to have increased rearfoot eversion excursion, eversion to tibial internal rotation ratio, and rearfoot eversion velocity. High-arched runners had increased vertical loading rate when compared to low-arched runners. These results suggest that arch structure is associated with specific lower extremity kinematics and kinetics. Differences in these parameters may subsequently lead to differences in injury patterns in high-arched and low-arched runners.
Bovine Visceral Schistosomosis Caused By Schistosoma Indicum in Migrant Cattle Slaughtered at Chennai City, Southern India

One hundred and eighty mesentery samples of cattle were collected during a period of October 2019- March 2020 for screening visceral schistosomosis from Perambur slaughter house, Chennai, Tamil Nadu, India. Schistosoma indicum was identified in eleven mesenteries of Nellore breed of cattle based on morphology and worm number varied from 1-114 per mesentry. Molecular confirmation based on 16s RNA revealed it to be S. indicum. It was found that the infection of S. indicum in cattle was first report in Tamil Nadu in last two decades. The slaughtered cattle originated from neighboring states especially Andhrapradesh. The tract of infection needs to be traced accordingly for future control strategies. Awareness must be created among the livestock farmers to prevent production loss due to S. indicum infection while purchasing cattle from neighboring states within India.
The complete chloroplast genome of Loropetalum chinense var. rubrum yieh (Hamamelidaceae)

Abstract Loropetalum chinense var. rubrum Yieh (L. chinense) is an evergreen shrub or small tree of Hamamelidaceae. In this study, the chloroplast genome sequence of L. chinense is 159,451 bp in length, consisting of a large single-copy region with 88,166 bp (LSC), a small single-copy region with 18,773 bp (SSC), and two inverted repeat regions with 26,256 bp (IRs). The GC content in the chloroplast genome of L. chinense is 38.0%. The chloroplast genome of L. chinense contained 125 genes, including 84 protein-coding genes, 37 tRNA genes, and 4 rRNA genes. The phylogenetic tree showed that L. chinense was closely related to L. subcordatum.
Proposal of the Experimental Promotional Video Model using Image Extension and Contraction, Overlay Techniques: based on augmented Reality and Virtual Museum Concepts

This study is about expressive techniques for promotional videos of cultural-arts organizations, and specifically aims to propose the new video producing model based on the research of Augmented Reality technology and Virtual exhibition. Up to this day, Augmented realty is not popularized for making promotional videos, but it has potential value since this technology can be variously connected with culture contents, specially for exploring exhibitions of museums or art galleries. Therefore, this study aims to examine characteristics of the technology, and find the possibility of combining Information & communication technology with the culture contents industry, specially, for making promotional videos. Then suggest the new experimental design model for making promotional video using the concept, and analyze how the new design model expressive techniques make the synergy effect and how the new model is differentiated from the existing promotional video design on the aspects of maximizing user experience and user interaction.
Simulation of Earth‐Ionosphere Cavity Resonances With Lightning Flashes Reported by OTD/LIS

Lightning flashes cause a globally resonant electromagnetic wave field known as Earth‐ionosphere cavity resonances. This global wave field is simulated here by use of lightning flashes reported by the lightning imagers on board the Optical Transient Detector (OTD)/Lightning Imaging Sensor (LIS) space missions. The stochastic occurrence of global lightning flashes in time and space is described with a likelihood function composed of a series of delta functions. This likelihood function is generated by random variates calculated from inverse transform sampling of the global lightning distributions measured by OTD/LIS. The simulation uses spherical harmonic expansion coefficients, calculated from frequency and distance dependent magnetic field measurements, to describe the wave field around the Earth. The incoherent superposition of the waves at each location results in simulated time series and spectra. The simulations agree very well with actual measurements of magnetic fields with a radiometer at Arrival Heights in the Antarctic as part of the Stanford ELF/VLF Radio Noise Survey. The simulated relative radiant energy distributions are attributed to corresponding “Earth‐ionosphere cavity brightness temperatures” TEIC. The spherical harmonic expansion of these brightness temperatures exhibits a spectrum where the amplitudes of the spatial expansion coefficients decrease with increasing angular degree. The calculated Earth‐ionosphere cavity brightness temperatures can be used for comparison with atmospheric temperatures in future studies.
Human-carrying biped walking vehicle

This paper describes the development of a prototype for a human-carrying biped walking vehicle named Waseda Leg – No. 16 Refined IV (WL-16RIV). This robot consists of two Stewart Platform type legs and waist with a passenger seat. This paper also describes a walking control method based on ZMP criteria. We introduced a passive dynamic model of a passenger in generating a walking pattern, and it enabled a more stable walking. The model consists of lower-limbs part assumed to be fixed to the robot, and the upper body assumed to be single particle with 2 DOF mounted on the seat via 2 springs and dampers. The parameters are identified through waist shaking experiments by using a force-torque sensor under the seat. The walking pattern generation method involves the proposed model built onto a strict model of the robot, and through iteration computation, a stable walking pattern is generated. We exhibited WL-16RIV at the Wired NextFest held in Los Angeles and held a test-riding event for the public for four days. In total, 172 people rode on this robot without accident. We confirmed the ruggedness and reliability of the developed mechanism and control method.
High-performance work practices and labour productivity: a six wave longitudinal study of UK manufacturing and service SMEs

Abstract This study utilises both evolutionary resource-based view (EBRV) and open systems theory to investigate the long term impact of high-performance work practices (HPWPs) on labour productivity in UK manufacturing and service sector SMEs. We investigate both forward and reverse causality and the moderating role of owner-manager strategic orientation, and whether such relationships are influenced by firm size and age. Utilising a longitudinal data set (a balanced panel) comprising 284 UK SMEs and six waves of data collection over a ten-year time period (2007–2017), we found support for both forward and reverse causality. Prior investments in HPWPs were positively associated with subsequent firm labour productivity and prior labour productivity was positively associated with future investment in HPWPs. The size of the estimated coefficients for these relationships were consistently larger for small firms than for medium sized firms, however there were not significant for firm age. We additionally found that owner-manager strategic orientation towards HR moderated both forward and reverse causality relationships and that this relationship increased over time. The size of the estimated coefficients was larger in small firms compared to medium-sized firms. Overall, our findings support calls to investigate both forward and reverse causality and to better understand potential differences between small and medium sized firms.
Operation Performance of a Small Air-Lift Pump for Conveying Solid Particles

The pump performance of a small air-lift system for conveying solid particles is investigated experimentally. The total length of the vertical lifting pipe is 3200 mm, and the inner diameter of the pipe is 18 mm. The gas injector is set at a certain point of the pipe. The flows in the lifting pipe are water/solid two-phase mixtures below the gas injection point, and air/water/solid three-phase mixtures above it. The time-averaged characteristics of the flows are examined for various experimental conditions. The effects of particle diameter, particle density, the gas-injection point, and the volume flux of air on the pump performance are studied systematically. The critical boundary at which the particles can be lifted is discussed in detail based upon one-dimensional mixture model.
A case study of a higher education institutional assessment on service learning

This article focuses on the various processes undergone by the University of Natal, Pietermaritzburg campus (now part of the University of KwaZulu-Natal) to research the institutionalisation of service learning. The application of three different processes and tools for assessment is discussed and located within the international context of institutional assessment trends. The relative utility of each of these assessment tools is discussed with particular emphasis placed on the narrative produced by using the Furco Rubric, as this highlights the role of contextual issues in the institutionalisation process. It is hoped that the reflections on these assessment processes will provide insight into the factors affecting the establishment of service learning as a sanctioned part of higher education's academic and social agenda. End Institusionele assessering van diensleer aan 'n hoeronderwysinrigting : 'n gevallestudie Hierdie artikel ondersoek die verskillende prosesse wat die Universiteit van Natal, Pietermaritzburg-kampus (nou deel van die Universiteit van KwaZulu-Natal) deurloop het om navorsing te doen oor die institusionalisering van diensleer. Die toepassing van drie verskillende prosesse en instrumente vir assessering word bespreek en binne die internasionale konteks van institusionele assesseringstendense geplaas. Die relatiewe bruikbaarheid van elk van hierdie assesseringsinstrumente word bespreek met spesifieke klem op die narratief wat voortspruit uit die gebruik van die Furcorubriek, aangesien dit die rol van kontekstuele kwessies in die institusionaliseringsproses uitlig. Nadenke oor hierdie assesseringsprosesse mag insig verskaf oor faktore wat die vestiging van diensleer as 'n aanvaarde deel van hoer onderwys se akademiese en sosiale agenda beinvloed. End