Miracle-dz/UniFAR-FTUs huggingface dataset:
On-chip microwave-to-optical quantum coherent converter based on a superconducting resonator coupled to an electro-optic microresonator

We propose a device architecture capable of direct quantum electro-optical conversion of microwave to optical photons. The hybrid system consists of a planar superconducting microwave circuit coupled to an integrated whispering-gallery-mode microresonator made from an electro-optical material. We show that electro-optical (vacuum) coupling rates $g_0$ as large as$\sim 2\pi \, \mathcal{O}(10-100)$ kHz are achievable with currently available technology, due to the small mode volume of the planar microwave resonator. Operating at millikelvin temperatures, such a converter would enable high-efficiency conversion of microwave to optical photons. We analyze the added noise, and show that maximum conversion efficiency is achieved for a multi-photon cooperativity of unity which can be reached with optical power as low as $ \mathcal{O}(1)\,\mathrm{mW} $.
Time optimal control for induction motor servo system

A time-optimal position control scheme based on Pontryagins's minimum principle is proposed for the current-source-inverter (CSI)-fed induction motor system. An induction motor with field-oriented control is modeled by a fast time-optimal position control system of second order that has two modes of operation: a bang-bang mode that operates until the position is close to target, followed by a DC breaking mode that provides asymptotic stability. This is achieved by substituting the time-optimal controller for the speed controller in the conventional field-oriented control loop of the motor. The validity of the time-optimal approach has been verified by an experimental test carried out with a prototype MC68000-based microcomputer system and a 5 HP induction motor. Experimental and simulation results are in close agreement. <<ETX>>
Low-power PSA transistors for microwave communication systems: comparison among bias-dependent models extracted from measured noise and scattering parameters

Due to the increasing interest in extending the frequency limits of silicon devices for telecommunication applications, we have analyzed the performance of different series of advanced polysilicon bipolar transistors. The devices were grouped according to their emitter finger number and were characterized over the 2-6 GHz frequency range in terms of noise, gain and scattering parameters at different bias conditions. A bias-dependent model extraction including noise sources has been subsequently performed for each series and a comparative analysis has been carried out. The results of this analysis point out distinguishing features of this advanced bipolar process which allows for realizing highly competitive bipolar devices for use in telecommunication equipment at low microwave frequencies.
Beyond the authenticity–standardisation paradox in international gastronomy retailing: Twisting the hosting city brand with the place of origin

PurposeThis study aims to frame the authenticity–standardisation relationship in international gastronomy retailing and explores how and to what extent the food place of origin and the urban context in which the gastronomy stores are located shape customers' in-store experience.Design/methodology/approachThis paper analyses the case of Eataly, which combines specialty grocery stores and restaurants disseminating the Italian eating style, quality food and regional traditions internationally. Facebook reviews (1,018) of four Eataly stores – New York City, Rome, Munich and Istanbul were analysed, adopting a web content mining approach.FindingsPlace of origin, quality and hosting city categories frame the gastronomic in-store experience. Standardisation elements (shared across the four analysed stores) and authenticity elements (specific to a single store) are identified towards defining three archetypical authenticity–standardisation relationships, namely originated authenticity, standardised authenticity and localised authenticity.Originality/valueThis study proposes original modelling that disentangles the authenticity–standardisation paradox in international gastronomy retailing. It provides evidence of the intertwining of the place of origin and the city brand in customers' in-store experience.
Revenue management in single-stage CONWIP production systems

We study a joint admission/inventory control problem for a manufacturing system producing one product to meet random demand. The system employs a constant work- in-process policy (CONWIP) whereby the total inventory of raw material and finished items is kept constant, and accepts orders only as long as the backlog is below a certain level. The objective is to determine the CONWIP and backlog levels that maximize the mean profit rate of the system. The system is modelled as a single server with a finite queue. It turns out that the mean profit rate is either concave or decreasing in one control parameter and also decreasing for large values of the other control parameter. A simple algorithm is developed which tracks down the globally optimum design in finite time. Numerical results show that the joint admission/inventory control policy achieves higher profit than other production control policies that have been examined in the literature.
Image Compressed Sensing Using Non-Local Neural Network

Deep network-based image Compressed Sensing (CS) has attracted much attention in recent years. However, the existing deep network-based CS schemes either reconstruct the target image in a block-by-block manner that leads to serious block artifacts or train the deep network as a black box that brings about limited insights of image prior knowledge. In this paper, a novel image CS framework using non-local neural network (NL-CSNet) is proposed, which utilizes the non-local self-similarity priors with deep network to improve the reconstruction quality. In the proposed NL-CSNet, two non-local subnetworks are constructed for utilizing the non-local self-similarity priors in the measurement domain and the multi-scale feature domain respectively. Specifically, in the subnetwork of measurement domain, the long-distance dependencies between the measurements of different image blocks are established for better initial reconstruction. Analogically, in the subnetwork of multi-scale feature domain, the affinities between the dense feature representations are explored in the multi-scale space for deep reconstruction. Furthermore, a novel loss function is developed to enhance the coupling between the non-local representations, which also enables an end-to-end training of NL-CSNet. Extensive experiments manifest that NL-CSNet outperforms existing state-of-the-art CS methods, while maintaining fast computational speed.
Novice Researchers Find their Power: Using Technology to Support the Development of Doctoral Students

This study examines innovative technology uses of proficient doctoral students in action research and uses the findings for doctoral program planning and revision. The authors conducted an environmental scan of students’ uses of technology to support their work throughout the dissertation process. They identified one to three students in each phase of the action research cycle, called “power users,” who innovatively used technology. Rogers’ (2003) theory of diffusion suggests that, as a result of the understandings from this study, the faculty-researchers are gatekeepers, responsible for systematically addressing the diffusion of technology. Recommendations include the adoption of a shared technology vision and leveraging the power users’ skills through the doctoral program.
Heart Block Caused by Ticagrelor Use in a Patient Who Underwent Adenosine Diastolic Fractional Reserve Assessment: A Case Report

Ticagrelor is a direct and rapid-acting antagonist of the P2Y12-adenosine diphosphate receptor found on platelets. The drug is recommended as a first-line antiplatelet agent in patients with acute coronary syndromes, as evidenced in its superiority compared to clopidogrel according to the Platelet Inhibition and Patient Outcomes study. Specifically, the mechanism of action has been proven to show higher inhibition and less variability in its action on P2Y12 receptors compared to clopidogrel. Additionally, ticagrelor inhibits the equilibrative nucleoside transporter 1 adenosine transporter protein leading to an increased concentration of adenosine in the blood, particularly at sites of ischemia. This effect increases the biological efficacy of ticagrelor in terms of cardioprotection, anticoagulation effects, and anti-inflammatory effects. However, the effects are also thought to be responsible for some of the adverse pharmacological effects reported with ticagrelor, such as bradycardia and ventricular pauses > 3 seconds. Herein, we report a case of recurrent sinus arrest and ventricular asystole in a patient pre-treated with ticagrelor and subsequent physiological assessment of a coronary lesion with fractional flow reserve using intravenous adenosine infusion.
Model and controller reduction of large-scale structures based on projection methods

Ph.D., The University of Texas at Austin, Aerospace Engineering Aug/2006 Dissertation: Model and Controller Reduction of Large-Scale Structures Based on Projection Methods (Advisor: Dr. Robert H. Bishop) M.Sc., University of Sao Paulo, Brazil, Mechanical and Mechatronics Eng. Jul/1998 Thesis: Development of an Adaptive Control for Flexible Manipulators with Payload Uncertainties (Advisor: Dr. Lucas Moscato) B.Sc., Industrial Engineering University (FEI), Brazil, Mechanical Eng. Dec/1995 Final Project: A Hybrid Gas-Electric Trash Truck
Current and Potential Therapies Targeting Inflammation in NASH

Nonalcoholic steatohepatitis (NASH) is the advanced form of nonalcoholic fatty liver disease (NAFLD). It is characterized by hepatic steatosis, inflammation, hepatocellular injury, and fibrosis. Inflammation plays a key role in the progression of NASH and can be provoked by intrahepatic (e.g., lipotoxicity, immune responses, oxidative stress and cell death) and extrahepatic sources (adipose tissue or gut). The identification of triggers of inflammation is central to understanding the mechanisms in NASH development and progression and in designing targeted therapies that can halt or reverse the disease. In this review, we summarize the current and potential therapies targeting inflammation in NASH.
A Study of the Impact of Minority Engineering Programs at the FAMU‐FSU College of Engineering

The Engineering Concepts Institute, and the rest of the comprehensive minority student development program that followed it, has served students of Florida A&M University matriculating to the Florida A&M University—Florida State University (FAMU‐FSU) College of Engineering. A significant relationship between participation in the programs under study and graduation/retention was identified with the Pearson Chi‐squared test, Cochran‐Mantel‐Haenszel statistics, as well as the Mantel‐Haenszel estimate. Students who participated in the program were estimated to have significantly higher odds of five‐year graduation and six‐year graduation than students who did not participate in the program. A comparison of high school GPAs identified a selection bias, and high school GPA was then used to control for this selection bias in a multiple logistic regression model. While multiple individual cohorts remain statistically significant, the aggregate of all cohorts lacks significance due to the small number of participants and the possible overly stringent penalty imposed by the addition of high school GPA. Nevertheless, the results continue to show the positive trend observed earlier—that Minority Engineering Program participants are 25 percent more likely to be retained and graduate in engineering than students who had similar high school GPA but did not participate in the program—it is expected that continuing longitudinal study will bear out this trend as statistically significant. Although the programs described in this paper have been discontinued as a result of personnel changes, the study of the program is still useful as a contribution to the body of evidence supporting the effectiveness of such programs.
“Archie”: A Cost Oriented Humanoid Robot

Abstract This paper is a brief description of the cost oriented humanoid robot Archie. Archie has been developed in Vienna University of Technology. Later on the software development of Archie extends on collaboration with the Department of Computer Science from the University of Manitoba. Archie is constructed by using brushless motors and harmonic gears with a novel approach for finding the absolute position as part of the work on the robot. The experience gained from the development of small humanoid robots is used to develop the software of Archie, to create, store, and play back motions. The software of the robot is aimed to be developed in a level to control automatically the balance of the robot by using feedback from an internal measurement unit (IMU). The main goal was to develop a reasonable cheap, teen sized humanoid robot for supporting humans in everyday life.
Optimization of Water Permeability of “Green” Non-Woven Filter Media from Lignocellulosic Fibers Using Taguchi Method

Water permeability is often used in characterization of the filter media. This paper focuses on the evaluating the effects of the process parameters and design parameters on the permeability of filter media as an output and considered as a response and the prediction of the optimal combination of synthesis parameters with an objective of maximizing the permeability. For this purpose, the Taguchi experimental design technique, analysis of varians (ANOVA), and signal-to noise (S/N) ratio were used. In this study, only eight filter configurations of Taguchi’s L8 orthogonal design were fabricated and tested. As a result from these experiments, the filter configuration satisfying the maximum water permeability value was determined, which show that statistical analysis is a useful method to quantify filter permeability objectively.
New current conveyor for high-speed low-power current sensing

A novel low-voltage current conveyor for fast CMOS SRAM applications is presented. The sensing speed is independent of the bit-line capacitances and a positive feedback technique is employed to give the circuit a high-speed and low-power operation. Performance evaluation has shown that, based on equal area ratios, the new conveyor outperforms the conventional circuit in terms of speed and average power dissipation by at least 30%. The static behaviour of the basic circuit is analysed, and HSPICE simulations have been used to characterise the circuits. Experimental results have verified the functionality of the new circuit and its superiority over the conventional CMOS current conveyor.
Wideband MVDR beamforming for acoustic vector sensor linear array

A wideband minimum variance distortionless response (MVDR) beamforming approach for an acoustic vector sensor linear array is presented, which is based on coherent signal subspace preprocessing, to solve the problem of direction of arrival (DOA) estimation for wideband coherent acoustic sources. The concept of wideband focusing is introduced into wideband processing for the acoustic vector sensor array, and the relationship between the wideband focusing matrices of the acoustic vector sensor array and the pressure sensor array is derived. Simulation results show that wideband MVDR beamforming of an acoustic vector sensor linear array outperforms that of a pressure sensor when dealing with wideband coherent sources, in the following aspects: realising unambiguous direction finding in the whole space, i.e. no left/right ambiguity problem; allowing the uniform interelement spacing to exceed the Nyquist half-wavelength upper limit; and having a better performance for DOA estimation when dealing with sources close to endfire.
Student regional origins and student entrepreneurship

ABSTRACT Using data from a large public research university in the United States, we examine the relationship between the characteristics of undergraduate college students’ regional origins and students’ interest in entrepreneurship. We find that several entrepreneurial indicators of students’ regional origins predict students’ entrepreneurial intent and ideation. One possible explanation for our results is that the extent of entrepreneurial activity in a region may imprint attitudes towards entrepreneurial careers on people growing up in those regions. Our findings suggest the composition of admitted students’ geographical origins may impact the entrepreneurial focus of universities’ student bodies.
On the thermal interaction of building structure and heating and ventilating system

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Factors enabling innovation activities: combining perspectives of personnel and management of a public university hospital

Innovation activities are actions intended to generate innovations, and innovations are novel, implemented items or actions, that improve processes. The research on enabling innovation activities in public hospitals is limited. This study identified key factors that enable innovation activities by combining statements made by representatives from management (n=13) and personnel (n=9) at one Finnish public university hospital. The study used semi-structured interviews and content analysis. According to the results, unified and authorised practices are needed to counterbalance and organise the extreme complexity typical of public hospitals. Both, hospital personnel and management called for assistance with complementary expertise in innovation management.
Soil Rehabilitation Promotes Resilient Microbiome with Enriched Keystone Taxa than Agricultural Infestation in Barren Soils on the Loess Plateau

Simple Summary Soil degradation accompanied by agricultural intensification is threatening the existence of dryland areas globally. However, improvement in soil quality in these areas through plant restoration has been greatly successful. Under this practice, soil microorganisms, especially keystone taxa, exert positive feedback on soil bio-functionality by recycling nutrients. Nevertheless, to date, it remains unclear as to how similar are the changes in these keystone taxa in dryland barren soils and agricultural soils, with comparison perspective. The earlier longer-term experiments in Loess soils have shown profound positive effects of plant restoration and establishment of more complex soil microbial networks in the presence of higher nutrient accumulation. The current work shows more keystone taxa that tend to exist in rehabilitated conditions when compared to their agricultural soil counterparts. Abstract Drylands provide crucial ecosystem and economic services across the globe. In barren drylands, keystone taxa drive microbial structure and functioning in soil environments. In the current study, the Chinese Loess plateau’s agricultural (AL) and twenty-year-old rehabilitated lands (RL) provided a unique opportunity to investigate land-use-mediated effects on barren soil keystone bacterial and fungal taxa. Therefore, soils from eighteen sites were collected for metagenomic sequencing of bacteria specific 16S rRNA and fungi specific ITS2 regions, respectively, and to conduct molecular ecological networks and construct microbial OTU-based correlation matrices. In RL soils we found a more complex bacterial network represented by a higher number of nodes and links, with a link percentage of 77%, and a lower number of nodes and links for OTU-based fungal networks compared to the AL soils. A higher number of keystone taxa was observed in the RL (66) than in the AL (49) soils, and microbial network connectivity was positively influenced by soil total nitrogen and microbial biomass carbon contents. Our results indicate that plant restoration and the reduced human interventions in RL soils could guide the development of a better-connected microbial network and ensure sufficient nutrient circulation in barren soils on the Loess plateau.
150 W GaN-on-Si RF Power Transistor

A large periphery high power AlGaN/GaN HFET grown on a silicon substrate has demonstrated over 150 W of CW RF output power along with excellent drain efficiency of 65%. When operated under WCDMA modulation and 28 Vdc drain supply voltage, these devices produced 20 W of RF output power with a corresponding drain efficiency of 27% while achieving an adjacent channel power ratio (ACPR) of −39 dBc. A 36 mm device was tested in a DPD linearizer under multi-carrier WCDMA modulation and achieved 20 dB of linearity improvement with 35% drain efficiency. Lastly, device reliability data is presented and shows extrapolated 20 year drift estimates of less than 1 dB for Psat.
Novel Uses of Traditional Algorithms for Septic Arthritis

Supplemental Digital Content is available in the text. Background: Pediatric musculoskeletal infection (MSKI) is a bacterial infection of the bone, joint, and/or muscle that can be difficult to diagnose. The Kocher and Caird algorithms were developed to distinguish septic arthritis (SA) from transient synovitis (TS) in the hip. These algorithms have been applied to all patients presenting with painful, swollen monoarticular joints regardless of suspicion for SA. The aim of this analysis was to assess the test performance of Kocher and Caird to distinguish MSKI among all pediatric patients presenting with monoarticular joint pain. A secondary aim was to validate the original algorithms. Methods: We conducted a secondary analysis of a prospective cohort study evaluating the test performance of procalcitonin for suspected SA in a pediatric emergency department. Patients aged 0 to 16 years old who presented with a painful or swollen monoarticular joint were considered for enrollment. We compared the test performance of the traditional algorithms in an expanded population of MSKI versus alternate joint pain using sensitivity, specificity, and area under the curve (AUC). As a sensitivity analysis, missing data for predictors like temperature, erythrocyte sedimentation rate, C-reactive protein, and inability to bear weight were multiply imputed using the Stata program, mi impute, for changed equations. Results: The Caird algorithm had better test performance compared to the Kocher in all populations. Both algorithms were most discriminative in comparing SA to TS in all joints (AUC: 0.84 Caird and 0.75 Kocher). However, the Caird criteria performed almost as well discriminating MSKI from other causes of monoarticular joint pain in all joints (AUC: 0.79; 95% confidence interval: 0.72, 0.85) and nonhip joints (AUC: 0.80; 95% confidence interval: 0.71, 0.88). Conclusion: Based on the findings of this study, it is clinically reasonable to apply the Caird algorithm to pediatric patients presenting with monoarticular joint pain of medium and large joints such as the knee, ankle, shoulder, elbow, and wrist, in addition to the hip. Level of Evidence: Level III—retrospective study of novel applications of SA algorithms.