Miracle-dz/UniFAR-FTUs huggingface dataset:
The Role of Endovascular Therapy in the Treatment of Acute Ischemic Stroke.

Of the approximately 795 000 strokes in the United States annually, 87% are ischemic and result in significant morbidity and mortality. Improvements in acute ischemic stroke (AIS) outcomes have been achieved with intravenous thrombolytics (IVT) and intraarterial thrombolytics vs supportive medical therapy. Given its ease of administration, noninvasiveness, and most validated efficacy, IVT is the standard of care in AIS patients without contraindications to systemic fibrinolysis. However, patients with large-vessel occlusions respond poorly to IVT. Recent trials designed to select this population for randomization to IVT vs IVT with adjunctive endovascular therapy have not shown improvement in clinical outcomes with endovascular therapy. This could be due to the lack of utilization of modern thrombectomy devices such as Penumbra aspiration devices, Solitaire stent-trievers, or Trevo stent-trievers, which have shown the best recanalization results. Continued improvement in the techniques with using these devices as well as randomized controlled trials using them is warranted. This article defines the goals of AIS revascularization, presents the evolution of treatment from the initial use of IVT to modern thrombectomy devices, and discusses current treatment and ongoing AIS trials.
Efficacy of chronic statin therapy on major cardiac events after coronary artery bypass grafting: low-dose versus high-dose.

AIM To investigate whether chronic statin treatment after coronary artery bypass grafting (CABG) protects patients from major cardiac events and provides percutaneous coronary intervention (PCI) free survival. METHODS A total of 232 patients with previous CABG and chronic statin therapy were selected retrospectively and were divided into two groups according to a dosage of atorvastatin per day, e. g. , 20 mg or 40 mg. Groups were compared for the major cardiac events and freedom from PCI by Kaplan Meier analysis as the primary end point. Patency of grafts including left internal thoracic artery (LITA) and saphenous vein (SVG) and progression of non-grafted native vessel disease were also evaluated as secondary end points. RESULTS Cardiac mortality, periprocedural myocardial infarction (MI), target vessel revascularization and percutaneous coronary intervention free survival were as follows: 2.9% versus 2.1% (p=1.000); 16.1% versus 21.1% (p=0.331); 56.93% versus 52.63% (p>0.005); 58.4% versus 63.2% (log-rank test; p= 0.347) in atorvastatin 20 mg and atorvastatin 40 mg groups, respectively. However, these results were not statistically significant between two groups (p>0.005). Patency of openness of grafts including LITA and SVG and progression of non-grafted native vessel disease were similar between groups (p=0.112, p=0.779, p=0.379 and p=0.663, respectively). CONCLUSION Low-dose long-term statin treatment had similar outcomes on major cardiac events and identical rate of freedom from percutaneous coronary intervention after coronary artery bypass grafting compared with high-dose long-term statin treatment. It is better to start from low dose statin treatment after surgical interventions.
Microdosimetric characteristics of micro X-ray beam for single cell irradiation

A tabletop micro X-ray beam irradiation system has been developed to research radiation effects on living cells. The microbeam system is composed of a micro focus X-ray tube, a capillary for X-ray guide, an X-ray semiconductor detector for fluorescent X-ray analysis and an inverted microscope. A beam profile measurement was performed and the size of the focused beam was 10 mum in diameter (FWHM) with the divergence of 5.1 mrad. The data on the microbeam measurement was approximately in agreement with a simulation of X-ray optical traces for the designed capillary. In addition, the microdosimetric characterization for the single cell irradiation was performed with the beam profile measurement and a photon-electron transport simulation. The maximum of the dose rate for the sample cells set in the system was estimated to be 0.05 Gy/s. In a preliminary experiment, single yeast cell was irradiated with the X-ray microbeam, and the data on the survival rate of the cell samples for the X-ray doses was obtained. Then, the microbeam irradiation system is useful to research the radiation effects to the living cells
A novel MAMSK-OFDM technology for next generation optical access networks

We propose and experimentally demonstrate a novel MAMSK-OFDM-PON. 5-Gb/s MAMSK-OFDM signal and 2.5-Gb/s upstream OOK signal is transmitted over 20km fiber successfully. The results show the prospect of this technology in future optical access networks.
An Advanced STATCOM Model for Optimal Power Flows Using Newton's Method

This paper presents the optimal power flow (OPF) formulation of a recent power flow STATCOM model . The new model puts forward an alternative, insightful interpretation of the fundamental frequency operation of the PWM-controlled voltage source converter (VSC), in an optimal fashion. The new model makes provisions for the explicit representation of the converter's internal ohmic and switching losses which in the context of an OPF formulation, yields an optimum operating point at which these power losses are at a minimum. The STATCOM model possesses unparalleled control capabilities in the operational parameters of both the AC and DC sides of the converter. Such control modeling flexibility is at its best when expressed in the context of an OPF solution using Newton's method. The STATCOM equations are incorporated into the OPF formulation using Lagrangian functions in quite a natural manner for efficient optimal solutions using a single frame-of-reference. The inequality constraint set of variables is handled equally well using the multipliers method. The prowess of the new model is demonstrated using two sample systems.
A stochastic interpretation of propositional dynamic logic: expressivity

Abstract We propose a probabilistic interpretation of Propositional Dynamic Logic (PDL). We show that logical and behavioral equivalence are equivalent over general measurable spaces. This is done first for the fragment of straight line programs and then extended to cater for the nondeterministic nature of choice and iteration, expanded to PDL as a whole. Bisimilarity is also discussed and shown to be equivalent to logical and behavioral equivalence, provided the base spaces are Polish spaces. We adapt techniques from coalgebraic stochastic logic and point out some connections to Souslin's operation from descriptive set theory. This leads to a discussion of complete stochastic Kripke models and model completion, which permits an adequate treatment of the test operator.
An Asynchronous Power Aware and Adaptive NoC Based Circuit

In complex embedded applications, optimisation and adaptation of both dynamic and leakage power have become an issue at SoC grain. A fully power-aware globally-asynchronous locally-synchronous network-on-chip (NoC) circuit is presented in this paper. Network-on-chip architecture combined with a globally-asynchronous locally-synchronous paradigm is a natural enabler for DVFS mechanisms. The circuit is arranged around an asynchronous network-on-chip providing scalable communication and a 17 Gb/s throughput while automatically reducing its power consumption by activity detection. Both dynamic and static power consumptions are globally reduced using adaptive design techniques applied locally for each synchronous NoC units. No fine control software is required during voltage and frequency scaling. Power control is localized and a minimal latency cost is observed.
A Fuzzy-Based Possibility Measure Approach for Multi-expert Multi-criteria Selection Problem

Nowadays, supply chain coordination (SCC) is considered by researchers and practitioners as one of the active research topics in production and operations management (POM). This paper addresses the development of a fuzzy-based possibility measure with goal programming approach dedicated to selection problem. More specifically, the selection problem is formulated as a multi-expert multi-criteria (MEMC) decision making problem and solved by combing consensus-based possibility measure with goal programming in a fuzzy environment. To illustrate the applicability of the proposed approach, a simple example is presented and the numerical results analyzed.
Performance analysis of a "green" building photovoltaic system

The Golisano Institute for Sustainability (GIS) building at Rochester Institute of Technology, is equipped with multicrystalline silicon photovoltaic (PV) modules with an annual capacity of 45,241 kilowatts-hour. In this study, yearly power output of the GIS PV system is investigated using a mathematical model and comparing with real data collected from the monitoring system. The model used was developed using Matlab code. The objective is to predict PV modules performance with respect to changes in environmental parameters such as temperature, irradiance and cloud coverage. The results have been compared with the actual PV output data for the year 2014 and show a very good correlation.
Foam micromachined aperture-coupled antennas for V-Band low-cost applications

In this paper, we present a novel micromachining approach for realizing 60 GHz foam aperture-coupled antennas. The foam is indeed an ideal antenna substrate provided by its electrical properties close to those of the air. At 60 GHz, the optimum foam thickness supporting the printed antenna must be about 400 um, which is a technological obstacle due to the poor mechanical resistance of the foam. It has been surrounded by this new micromachining method. A single patch and a 2times4 antenna array have been realized and measured. They exhibit wideband bandwidth and excellent radiation efficiency. The gains are about 6.7 dBi for the single patch and 13 dBi for the 2times4 antenna array. These results demonstrate the great potential of foam substrate for 60 GHz antennas. To the best knowledge of the authors, this work is the first report of a low-cost, high gain and high efficiency 60 GHz foam aperture-coupled antennas.
A new approach to design low cost, low complexity phased arrays

A new approach to design phased arrays with low cost and complexity is presented. In this approach, phase progression across the antenna elements is controlled by tuning a single phase shifter. As a result of reduction in the number of phase shifters, cost and complexity of phased arrays can be significantly reduced based on this approach. The presented phased array is a symmetrical structure consisting of directional couplers, phase shifters, amplifying stage and power combiners. The simple and compact phase shifters used in the design are composed of varactor diodes and inductors. As a proof-of-principle a 2 GHz phased arrays is fabricated and tested. The measurement results showing an approximate scan angle of 25 degrees are in a good agreement with the simulation.
Evaluation of scattering in cone-beam breast computed tomography: A Monte Carlo and experimental phantom study

Monte Carlo simulations of X-ray irradiations of breast phantoms of various sizes as PMMA cylinders of different diameters and a hemi-ellipsoidal PMMA phantom were performed in order to evaluate the 2D distribution of primary and scattered photons and Scatter-to-Primary Ratio (SPR) in projection images in cone-beam breast CT. Irradiation geometry and technique factors were set so as to reproduce the experimental conditions used for validation measurements with a prototype CT breast scanner. In the simulations, performed with GEANT4 software, we varied the phantom diameter and shape, the X-ray tube voltage and added filtration. SPR increases from 0.4 (at 8 cm cylinder diameter) up to 1.5 (14 cm cylinder diameter) at the center of the phantom. In the same phantom, SPR has lower values toward the bases of the cylinder than at its center. The scatter fraction increases by adopting a 50 kVp or higher tube voltages, up to 80 kVp, and by increasing the added filtration. Simulated and measured lateral profiles across a 14 cm cylinder diameter in projection images show a relative deviation of 4%. Simulations show a different distribution of scatter in a 14 diameter cylinder and 14 cm hemi-ellipsoidal phantom, so preventing the use of simple cylindrical geometries when simulating the attenuation of the pendant breast for scatter correction procedures.
Localization of the Follicle-Stimulating Hormone Receptor in Lipid Raft Domains

ESPOSITO, TYLER Localization of the follicle-stimulating hormone receptor in lipid raft domains. Department of Biological Sciences, June 2014. ADVISOR: Professor Brian Cohen Lipid raft domains have been shown to be important in receptor signaling, especially for G Protein Coupled Receptors (GPCR). Follicle stimulating hormone is a vital reproductive signal that relies on effective signaling of its GPCR. The goal of this study was to test whether or not the follicle stimulating hormone receptor (FSHR) utilizes lipid raft domains when signaling. The main methods used were fluorescent antibodies and various forms of microscopy, including confocal microscopy. A fluorescent antibody for the FSHR (mAb 106.105) allowed us to perform these studies. In the first experiment, cells treated with FSH and stained with the receptor antibody showed aggregation of receptors. This supported the belief that FSHR are clustering in lipid raft domains when signaling. Next nystatin, a lipid raft disrupting chemical, was used to show that if the lipid rafts were disturbed, this clustering of receptor would not be observed. In these trials the cells treated with FSH looked similar to the cells that received no treatment. Finally we used the Cholera Toxin B subunit to fluorescently tag lipid raft domains, while still staining for receptor. This showed colocalization of the receptor and lipid rafts in cells treated with FSH and those who did not receive treatment (but at a lower intensity). These results support the hypothesis that FSHR utilizes lipid rafts when signaling, most likely to improve signaling efficiency.
Induction coilgun for EM mortar

The Defense Advanced Research Projects Agency is investigating electromagnetic (EM) guns for the next generation combat vehicle providing improved performance and survivability without the use of propellant. The two-year program was initiated in 2005 to design a coilgun and a railgun to launch an existing mortar round with an EM armature in laboratory conditions at speeds to increase range beyond current capabilities. This paper describes a laboratory coilgun system whose requirements are based on the Future Combat System Mortar Vehicle for indirect fire applications. Minimal adaptation has been necessary to existing mortar rounds with the armature and support structure necessary for EM coilgun launch. High magnetic field coils have been designed and tested at stress levels anticipated during launch. Recoil from the barrel of stacked coils will be managed by a conventional gun mount integrated to a catcher through a structural frame. Capacitor bank modules currently in fabrication and test utilize 1980’s technology capacitors, but new ideas in commercial components for switches, resistors and bus-work are investigated to lower cost. The firing system, which includes a projectile-sensing 94 GHz radar triggers the capacitor banks for optimal performance and precise muzzle velocity control, is also described.
Comparison of AdaBoost.M2 and perspective based model ensemble in multispectral image classification

AdaBoost is a popular ensemble method utilized in pattern recognition problems that are considered tough. Besides being a robust technique it does suffer from few limitations viz. size of training data and presence of noise in training data. In this context, we proposed a novel technique called Perspective Based Model (PBM) for ensemble creation in case of multispectral data analysis. In the present paper, we evaluate its performance in terms of classification accuracy against AdaBoost.M2. Preliminary results show higher accuracy through PBM compared to a single classifier and promising classification results for PBM compared to AdaBoost.M2.
A Generic Operations Framework for Discos in Retail Electricity Markets

A generic operations framework for a distribution company (disco) operating in a competitive electricity market environment is presented in this paper. The operations framework is a two-stage hierarchical model in which the first deals with disco's activities in the day-ahead stage, the day ahead operations model (DAOM). The second deals with disco's activities in real-time and is termed real-time operations model (RTOM). The DAOM determines the disco's operational decisions on grid purchase, scheduling of distributed generation (DG) units owned by it, and contracting for interruptible load. These decisions are imposed as boundary constraints in the RTOM and the disco seeks to minimize its short-term costs keeping in mind its day-ahead decisions. A case-study is presented considering the well-known 33-bus distribution system and three different scenarios are constructed to analyze the disco's actions and decision-making in this context.
Value-addition of cold pressed hemp seed oil and oil by-products through ultrasonic bleaching and heat treatment: evaluation of chlorophyll, oxidative stability and antioxidant activity

I ACKNOWLEDGEMENT . III TABLE OF CONTENTS . V LIST OF ABBREVIATIONS . X LIST OF TABLES . XI LIST OF FIGURES . XIII CHAPTER 1 . 1 1. GENERAL INTRODUCTION . 1 1.
A Compact Wideband Modified Planar Inverted $F$ Antenna (PIFA) for 2.4/5-GHz WLAN Applications

A compact wideband modified planar inverted F antenna (PIFA) with two shorting strips for 2.4/5.2-GHz wireless local area network (WLAN) operations is presented. As a starting point, two-branch strip lines derived from the dipole antenna structure are used to achieve the desired resonant frequency. One of them is connected to two shorting strips with the different length and width, and those strips generate additional resonant modes. A wideband characteristic can be optimized by tuning the parts of two shorted patches and size of each strip line segment. The proposed antenna has a low profile and can easily be fed by a 50-Omega coaxial cable. In addition to covering 2.4- and 5.2-GHz band, a wide impedance bandwidth from 2.94 to 5.82 GHz (|S11|<-10 dB, about 69% centered at 4.14 GHz) is obtained. The measured maximum radiation gains at the frequencies of 2.44, 4.14, and 5.2 GHz are about 1.6, 3.8, and 2.5 dBi, respectively. The proposed antenna is suitable for the multiband operations, covering 2.4/5.2-GHz WLAN operation
An Accurate Subcircuit Model of SiC Half-Bridge Module for Switching-Loss Optimization

The increasing demand for high power density requires the power converter to operate in high switching frequency. Silicon carbide (SiC) power module is regarded as one of the most promising candidates for high-frequency applications due to the superior switching speed and low switching loss. With the increase of switching frequency, the switching loss will be the limiting factor of efficiency. Hence, it should be minimized during each switching transition. The optimization of switching loss is normally achieved by the repetitive double pulse test experiments. It is time-consuming to find an optimum gate resistance to achieve the tradeoff between switching loss and electromagnetic interface. In this paper, an accurate subcircuit model for SiC power module is proposed to assist optimization of switching loss in converter design. By considering the device physics and structure, an accurate Miller capacitance model is obtained. Moreover, a parameter extraction procedure is presented, which is based on the datasheet. Good agreements are achieved between the PSpice simulation and experiment.
Comparison of controller designs for an experimental flexible structure

Control system design and hardware testing are addressed for an experimental structure displaying the characteristics of a typical large flexible spacecraft. The practical aspects associated with designing and implementing various control design methodologies for a real system are described, and the results are given. The design methodologies under investigation include linear-quadratic-Gaussian (LQG) control, static and dynamic dissipative control, and H/sub infinity / optimal control. The merit of each design is based on its capacity for vibration suppression, its stability robustness characteristics with respect to unmodeled dynamics, and its ease of design and implementation. Among the three controllers considered, it is shown, through computer simulation and laboratory experiments, that the dynamic dissipative controller gives the best results. <<ETX>>
The ambipolar evolution of a high-performance WSe2 transistor assisted by a ferroelectric polymer

In recent years, the electrical characteristics of WSe2 field-effect transistors (FETs) have been widely investigated with various dielectrics. Among them, being able to perfectly tune the polarity of WSe2 is meaningful and promising work. In this work, we systematically study the electrical properties of bilayer WSe2 FETs modulated by ferroelectric polymer poly(vinylidenefluoride-co-trifluoroethylene) (P(VDF-TrFE)). Compared to traditional gate dielectric SiO2, the P(VDF-TrFE) can not only tune both electron and hole concentrations to the same high level, but also improve the hole mobility of bilayer WSe2 to 265.96 cm2 V−1 s−1 under SiO2 gating. Its drain current on/off ratio is also improved to 2 × 105 for p-type and 4 × 105 for n-type driven by P(VDF-TrFE). More importantly, the ambipolar behaviors of bilayer WSe2 are effectively achieved and maintained because of the remnant polarization field of P(VDF-TrFE). This work indicates that WSe2 FETs with P(VDF-TrFE) gating have huge potential for complementary logic transistor applications, and paves an effective way to achieve in-plane p–n junctions.
Current status of airborne active phased array (AESA) radar systems and future trends

AESA technology reached a mature technology level and is being adopted by advanced radar programmes. TiR modules are the key enabling technology and cost reduction efforts in this field are io progress. For future applications GaN, MEMS RF Switches and tile type T/R modules are anticipated and will pave the way for conformal and multi-function AESA radar systems.
Dual orthogonal CPW feed single element UWB antenna with polarization diversity

A single element ultrawide band (UWB) polarization diversity antenna with dual orthogonal CPW feed is presented. The proposed structure consists of a printed circular radiator which is orthogonally feed with two CPW feed line to achieve polarization diversity characteristic. The proposed antenna utilizes a set of slanted microstrip-lines between the CPW feed lines to maintain high isolation (of more than 20dB) between the input ports. The proposed structure provides an impedance bandwidth of 18 GHz, which covers Bluetooth/Wi-Fi band along with UWB bandwidth. The transmission and diversity characteristics of the proposed antenna are measured and results are reported in terms of group-delay, and Envelop-Correlation coefficient response. A good agreement between simulated and measured results shows that the proposed antenna is good candidate for UWB diversity application.
Thermally induced vortex nucleation in permalloy elements

Vortex nucleation and vortex motion are the main mechanisms of magnetization reversal in micrometer-sized magnetic elements. The critical field required to nucleate a vortex depends on the temperature. We propose a method that combines standard Landau-Lifshitz-Gilbert (LLG) micromagnetics and an elastic band method to simulate nonzero temperature hysteresis curves of magnetic thin film elements. Whereas the LLG simulations gives the equilibriums states before and after a vortex enters the element, the elastic band method gives the height of the energy barrier between these two states. Thus temperature-dependent nucleation fields can be computed without the need to perform stochastic LLG simulations.