Miracle-dz/UniFAR-FTUs huggingface dataset:
Reconfigurable Circularly-Polarized Patch Antenna With Conical Beam

A design method is described for reconfigurable circularly-polarized (CP) microstrip array antennas with conical-beam radiation. The proposed antenna structure consists of four L-shaped patch antennas arranged in a square-ring formation. Each patch antenna is shorted to the ground plane through conducting walls. With a top-loaded monopole feed, two orthogonal resonant modes, loop mode and monopole mode, can be excited simultaneously. The effects of the shorting walls on the resonant frequencies of the two modes are investigated, and it is found that the resonant frequency (fmono) of the monopole mode has a more obvious variation than that (floop) of the loop mode when the width or the number of the shorting walls is changed. In addition, if the two modes are properly coupled, the microstrip array can generate a CP radiation; meanwhile, the polarization sense is left-hand CP if floop > fmono but is right-hand CP if floop <; fmono. A reconfigurable antenna prototype is fabricated, and the experimental results show that the prototype not only has the characteristic of omnidirectional radiation but also possesses the ability of switching between left-hand and right-hand CP. Simulated results carried out by HFSS are also provided and they agree well with the measured results.
Interference of organic signals in highly time resolved nitrate measurements by low mass resolution aerosol mass spectrometry

[1] Highly time resolved measurements of nitrate in ambient aerosols were conducted by an Aerodyne Quadrupole Aerosol Mass Spectrometer (Q-AMS or simply AMS) and a particle-into-liquid sampler (PILS) coupled to ion chromatography from field intensives at two sites: an urban site in New York City (Queens College; QC) for wintertime (22 January to 5 February 2004) and a rural site in southwestern New York state (Pinnacle State Park; PSP) for summertime (18 July to 6 August 2004). In this study, we report that in rural atmospheres the inorganic nitrate signal from Q-AMS may contain significant interferences from organic signals. Analysis of the QC data indicates a good agreement between the PILS-nitrate and AMS-nitrate measurements (R2 = 0.94; linear regression slope = 1.05). In addition, the m/z 30 and m/z 46 (two dominant ion fragments in nitrate mass spectrum) signals tightly correlate at QC (R2 = 0.98) and have an average ratio similar to that determined in the laboratory for NH4NO3 (m/z 30/m/z 46 = 2.4). In contrast, at the PSP site the correlation between PILS- and AMS-nitrate was poor (R2 = 0.34), the AMS reported nitrate values were substantially higher, and the m/z 30 to m/z 46 ratios were generally much larger than 2.4. These observations, together with evaluations by aerosol phase ion balance, indicate that the AMS m/z 30 signals at PSP have been strongly influenced by organic compounds that also produce signals at m/z 30, e.g., organic nitrates (NO+), oxygenated organics (CH2O+), hydrocarbon-like organics (C2H6+), and nitrogen-containing organic compounds (CH4N+).
From rationality to cooperativeness: The totally mixed Nash equilibrium in Markov strategies in the iterated Prisoner’s Dilemma

In this research, the social behavior of the participants in a Prisoner's Dilemma laboratory game is explained on the basis of the quantal response equilibrium concept and the representation of the game in Markov strategies. In previous research, we demonstrated that social interaction during the experiment has a positive influence on cooperation, trust, and gratefulness. This research shows that the quantal response equilibrium concept agrees only with the results of experiments on cooperation in Prisoner’s Dilemma prior to social interaction. However, quantal response equilibrium does not explain of participants’ behavior after social interaction. As an alternative theoretical approach, an examination was conducted of iterated Prisoner's Dilemma game in Markov strategies. We built a totally mixed Nash equilibrium in this game; the equilibrium agrees with the results of the experiments both before and after social interaction.
Photovoltaic hot spot mitigation using voltage-threshold control at the panel level

Maximum power point tracking (MPPT) for photovoltaic (PV) panels is primarily implemented at the panel level in presently-installed PV systems. Each panel typically consists of three subpanel strings with a bypass diode connected over each subpanel. When a panel becomes partially-shaded, the MPPT control may bypass a substring to optimize power, however, bypassing increases hot spotting risk. This paper introduces a voltage-threshold control that works with existing MPPT to mitigate hot spotting. The control imposes a lower voltage limit that prevents a compromised subpanel string from being bypassed. Simulation results show that voltage-threshold control is effective in limiting hot spotting for both typical Type A and Type B PV cells, with only minimal reduction in energy output.
An 80 nm 4 Gb/s/pin 32 bit 512 Mb GDDR4 Graphics DRAM With Low Power and Low Noise Data Bus Inversion

4 Gb/s/pin 32 bit 512 Mb GDDR4 (Graphics Double Data Rate 4) SDRAM was implemented by using an 80 nm CMOS process. It employs a data bus inversion (DBI) coding to overcome the bottleneck of a parallel single-ended signaling, a power consumption of I/O, power supply noise, and crosstalk. Both DBI AC and DC modes are combined to a single circuit by eliminating the feedback path of a conventional DBI AC circuit while achieving high-speed operation. The proposed DBI circuit uses an analog majority voter insensitive to mismatch for small area and delay. Ronmiddot tuning further improves the voltage and time margin by adding a user-supplied offset to auto-calibrated Ronmiddot. In addition, a dual duty cycle corrector (DCC) is used to reduce duty error and jitter by averaging two outputs of two DCCs. Measured results show that DBI DC coding reduces the peak-to-peak jitter from 65.5 ps to 44.5 ps and the voltage fluctuation from 183 mV to 115 mV at the data rate of 4 Gb/s with the 2 V.
Evaluating Xenobiotic Metabolizing Enzymes , Cell Proliferation and Apoptosis Markers in Epithelial Ovarian Cancer patients

Introduction: Adequate screening methods are not available for early stage ovarian cancer detection. We hypothesised that correlating the levels of phase I and phase II biotransformation enzymes involved in estrogen metabolism and correlating it with cell proliferation and apoptosis evasion would provide key hallmark traits for ovarian malignancy. The aim of the study was to evaluate the expression levels of phase I (cytochrome P450 total and the CYP isoforms CYP1A1, CYP1A2 and CYP2B) and phase II (GST and QR) xenobioticmetabolizing enzymes, as well as expression of markers reflecting cell proliferation (PCNA and cyclin D1) and apoptosis (Bcl-2 and Bax) in patients with epithelial ovarian cancer. Material & Methods: Hundred and fifteen ovarian tumor patients were chosen for the study. Out of 115 ovarian tissues of patients, 18 were histologically non-malignant and rest were malignant with grade III epithelial ovarian tumors. Results : The results of the present study demonstrated that the increase in phase I enzymes in ovarian tumour tissues were not compensated by a corresponding increase in phase II enzymes, indicating insufficient detoxification in the face of increased carcinogenic activation. Conclusion: The present study results provided evidence that an imbalance in phase I and phase II xenobioticmetabolizing enzymes, coupled with an imbalance in cell proliferation and apoptosis, are important contributors for the development of epithelial ovarian cancer.
Architecture Exploration for Tree-based Option Pricing Models

This project explores the application of reconfigurable hardware and GPUs to the acceleration of financial computation using tree-based pricing models. Two parallel pipelined architectures have been developed for option valuation using binomial trees and trinomial trees, with support for concurrent evaluation of independent options to achieve high pricing throughput. Two highly optimised GPU implantations based on same models are developed to contrast the hardware results. The results show that in the best case the tree-based models executing on a Virtex 4 Field Programmable Gate Array (FPGA) at 82.7MHz with fixed-point arithmetic can run over 160 times faster than a Core2 Duo processor at 2.2GHz. The FPGA implementation is two times faster than the nVidia Geforce 7900GTX processor with 24 pipelines at 650MHz, and 35% slower than the nVidia Geforce 8600GTS processor with 32 Pipelines at 1450MHz. In a real scenario FPGA can run over 80 times faster than the reference AMD Opteron server processor at 1GHz and can run as fast as the nVidia Geforce 7900GTX processor. The FPGA implementation is about 50% slower than the nVidia Geforce 8600GTS processor in the real scenario.
Post-disaster rescue facility: Human detection and geolocation using aerial drones

The research focuses on the implementation of a human detection and geolocation system using aerial drones to complement search and rescue. The study includes the characterization of the human detection system for thermal and optical imagery by determining the frame accuracy, true and false positive rates. Geolocation was achieved using triangulated-adjusted GPS data and integration of Google Maps.
Exploring web-browser based runtimes engines for creating ubiquitous speech interfaces

This paper describes an investigation into current browser based runtimes including Adobe’s Flash and Microsoft’s Silverlight as platforms for delivering web based speech interfaces. The key difference here is the browser plugin is used to perform all the computation without any server side processing. The first application is an HMM based text-to-speech engine running in the Adobe Flash plugin. The second application is a WFST based large vocabulary speech recognition decoder written in C# running inside the Silverlight plugin.
An Optical Tactile Array Probe Head for Tissue Palpation During Minimally Invasive Surgery

This paper presents a novel tactile probe head designed for tissue palpation during minimally invasive surgery (MIS). The probe head uses fiber optics and consists of 14 tactile sensing elements at 2.5-mm spacing with a diameter of 14 mm. Each tactile element contains a microstructure converting the tissue reaction force applied on sensing nodes into a circular image pattern through transmitting and receiving fibers. The image patterns of all the sensing elements are captured by a camera attached at the proximal end of the receiving fibers and are converted to tactile force feedback through image processing. Validation tests showed that each sensing element of the tactile probe head can measure forces from 0 to 0.5 N with a resolution of 0.05 N. The proposed sensing probe is low cost, lightweight, sterilizable, easy to be miniaturized, and magnetic resonance environment compatible. Experiments were performed for testing the probe's capability of detecting the tissue abnormality through spatial distribution of tactile force feedback. The proposed tactile probe head with its capacity to accurately detect nodules embedded inside soft tissue can be an effective tool in surgical palpation during MIS.
Optimization of Multiple-Short PIFA for Broadband Communication

As wireless systems gain wider acceptance and enjoy increased application, performance and cost constraints on the wireless system antennas become more difficult to meet. In this context, antennas that are small in size, inexpensive to manufacture, conformal or are low-profile and that exhibit broadband or dual-band operation are of particular interest. In this paper we apply an optimization technique for multi-short PIFA antennas based on combining a genetic algorithm (GA) and method of moments (MoM) technique. The GA optimizes the position of shorting patches in antenna model together with the shape of the radiator itself, in order to obtain a specific frequency response. Recalculation of the MoM interaction matrix for each individual in the GA is avoided by application of DMM (direct matrix manipulation).
Investigation of the methods of improving group delay characteristic using complex transmission zeros for coupled resonators filter

Two methods of improving group delay characteristic using complex transmission zeros for coupled resonators filter with attenuation poles in arbitrary stop-band frequencies and with the equal ripple passband attenuation are investigated. Complex transmission zeros of one method contribute to both the attenuation and the phase characteristics, and those of another one contribute only to the phase characteristic. As the results, we show that the quasi equal ripple group delay characteristic is obtained by the former yet an exact one is obtained by the latter.
Design and implementation of statistic remote sensing platform based on design patterns

The “software crisis” outbreak in 1960s continues to this day. The process of software development faces a number of serious problems; software reuse is the fundamental approach to solve this problem. Design patterns is one of the typical way of software reuse, is the basic of reusable object-oriented software design. In order to reduce the influences of a variety of functions and non-functional problems in software development process, this study integrates the features of remote sensing and GIS software, and put forward several application cases based on the classic GoF design patterns. These cases had been applied to the ecological resources statistics remote sensing platform successfully, and greatly improved the software's scalability and flexibility.
A Plasmid vector encoding functional human keratinocyte growth factor gene in vitro —Functional human KGF gene expression in vitro

In this study, we cloned human KGF (hKGF) genes using RT-PCR techniques and developed a eukaryotic expression plasmid vector capable of directing the expression of functional hKGF. Monolayer culture of human embryo lung fibro-blast (HLF) was used for isolation of total RNA. Then the total RNA was purified and reverse- transcribed into cDNA using an oligo (dT) primer. A full PCR fragment for hKGF was generated and cloned. Restriction digestion and nucleo-tide sequence analysis validated the complete hKGF transcription. The hKGF cDNA fragment was inserted into pEGFP-C2 vector by means of recombinant DNA technology and verified by restriction analysis and sequencing. We have constructed pEGFP-C2-hKGF encoding the green fluorescent protein (GFP). Furthermore, hKGF had the effect on AEC II proliferation. These results suggest that the potential appli-cation of a hKGF plasmid of gene expression should be useful for sustained AEC proliferation, and its in vivo efficacy needs to be validated. Keywords:
Downregulation of miR-874-3p promotes chemotherapeutic resistance in colorectal cancer via inactivation of the Hippo signaling pathway

Overcoming resistance to chemotherapy is an arduous challenge in the treatment of colorectal cancer (CRC), particularly since the underlying molecular mechanisms remain obscure. In the present study, we reported that miR-874-3p was markedly downregulated in CRC tissues compared with that in adjacent normal colorectal epithelial tissues. Upregulation of miR-874-3p attenuated the chemoresistance of CRC cells to 5-fluorouracil (5-FU) in vitro and in vivo. Conversely, inhibition of miR-874-3p yielded an opposite effect. Furthermore, our results demonstrated that miR-874-3p directly inhibited the expression of transcriptional co-activators YAP and TAZ of the Hippo signaling pathway, resulting in the inactivation of the TEAD transcription. Thus, our findings clarify a novel mechanism by which miR-874-3p restores chemotherapeutic sensitivity of CRC to 5-FU, indicating that offering miR-874-3p mimics in combination with 5-FU may serve as a new therapeutic strategy to circumvent the chemoresistance in CRC.
Association of p53 codon 72 polymorphism with risk of second primary malignancy in patients with squamous cell carcinoma of the head and neck

p53 plays a critical role in cellular anticancer mechanisms, and has been correlated with second primary malignancy (SPM) development. A common polymorphism in codon 72 of p53 results in an amino acid substitution and could influence p53 function. The authors hypothesized that p53 codon 72 polymorphism may be associated with risk of SPMs and SPM‐free survival among patients with squamous cell carcinoma of the head and neck (SCCHN).
A Survey on Different Approaches used for Credit Card Fraud Detection

Now-a-days the use of credit card has dramatically increased due to rapid growth of e-commerce technology. It is the most popular mode of payment for both online as well as regular purchase.Credit card fraud has become a significant problem, as companies, banks other financial institutions faces huge amount of losses annually because of fraudulent activities of fraudsters. So the main aim of credit card fraud detection system is to learn different patterns used in previous frauds and train itself to identify fraudulent and non fraudulent transactions. In this paper a survey on different techniques used in credit card fraud detection such as Neural Network,Bayesian Network, Decision Trees, Hidden Markov Model, Support Vector Machines, Meta Learning, BlastSSaha Algorithm, Fuzzy System with Neural Network, Fuzzy Darwinian System, and Genetic Algorithm is demonstrated.
Exploring the Design Space for Cyber Alerts in Context

During knowledge elicitations with cyber analysts, we uncovered a need for tools that help analysts understand threat alerts in a context of baseline “normal” behaviors. We used an iterative design process to create a prototype alert management system with which we can explore the critical design space for effective baseline visualizations. We report herein on the design elements of this user interface, and present associated expert feedback from a design evaluation in the associated poster. We summarize our initial insights into the design of effective baseline visualizations that could be integrated into a larger visualization-support cyber alert management workflow desired by cyber analysts.
Periodic analysis of runoff based on Hilbert-Huang Transform

The analysis and calculation are conducted in combination with a real example, the Lanzhou station in the upper reaches of the Yellow River and Lancun station in the Fenhe River, Hilbert-Huang Transform (HHT) and the empirical mode decomposition (EMD) method are used to analyze runoff time series in this paper. Firstly original series is step-by-step decomposed by means of EMD method, so the result is four intrinsic mode functions (IMF) and a residual component at the Lanzhou station, and is three intrinsic mode functions (IMF) and a residual component at the Lancun station. It is computed that natural annual runoff have the periodicity of 2.23 a, 5.57 a, 10.23 a and 19.76 a at the Lanzhou station, and 2.63 a, 6.67 a and 25 a at the Lancun station. The physical cause is analyzed. The result provides scientific ground for planning and management water resource in the basin.
Biomedical applications of acoustic radiation force based on somatosensory reception

We have previously shown that short pulses of focused ultrasound may be used to stimulate locally receptor neural structures and thereby induce sensations that humans can perceive through the skin (for example tactile, warmth and cold, tickling, pain, etc.). Furthermore, ultrasound modulated by sound signals (tone, speech, music, etc.) can induce sound sensations corresponding to the nature of the modulation in persons with normal hearing. The mechanism underlying these effects that have been used in clinical diagnostic practice is related to the radiation force. We also showed recently that the phenomenon of the radiation force could be used in perspective robotic systems, sensors, and automated control systems, based on the use of tactile sensations in the human‐machine interface, as well as in devices that may allow blind and visually impaired persons to perceive textual information presented on a tactile display. The research was supported by INTAS (05‐1000008‐7841) and RFBR (06‐02‐16079).
An Empirical Study on Relationship between Green Supply Chain Management and SME Performance in China

Conventional theory holds that green supply chain management will cause more cost to SMEs, which is lack of resources. This subsequently leads to lower firm performance of SMEs. While researchers have explored the relationship between green supply chain management and business performance in different organizations, such studies in SMEs are scarce. This study investigates potential influences of GSCM on the performance of SMEs in China. Data for this study were collected through personal interviews, and the study developed a scale to specify the dimensions of a GSCM. Results indicated that the scale in this study provided a good measure of market orientation in this setting. Also, the results of analyses indicated a significant link between GSCM and the performance of SMEs in China.
A cost-efficient 61 GHz high-resolution radar sensor for industrial positioning and distance measurement

In this paper a novel 61GHz radar sensor node for industrial positioning and distance measurement is presented. The sensor provides numerous functions enabling a broad range of signal processing technologies and is designed with regard to cost-efficient implementation only using commercial available components without limiting the area of possible applications. Beside the requirement analysis and system design, several measurements of antenna isolation and distance resolution are depicted and discussed.
Uniform investigation of hydraulic fracturing propagation regimes in the plane strain model

The hydraulic fracturing propagation regimes in the plane strain model are uniformly investigated using a numerical method based on the finite element method. The regimes range from toughness‐dominated cases to viscosity‐dominated cases, covering zero leak‐off situations and small leak‐off situations. Unlike the asymptotic solutions, the numerical method is independent of the energy dissipation regimes and fluid storage regimes. The numerical method pays no special attention to the fracture tip, and it simulates fracture tip behaviors by increasing the number of functions in a natural and uniform manner. The numerical method is verified by comparing its results with the asymptotic solutions. The effect of the model sizes on the numerical method is discussed along with the robustness of the numerical method. Copyright © 2014 John Wiley & Sons, Ltd.
Track-before-detect for fluctuating targets using phase information

The fluctuating target tracking problem through the use of dynamic programming based track-before-detect (DP-TBD) is considered in this paper. The target is modelled by the well-known Swerling family of target amplitude fluctuation models in order to capture the effect of radar cross-section changes that a target would present to radar over time. For each of the target fluctuation models, the complex likelihood ratio (CLLR), which utilizes the target amplitude fluctuation information together with the phase information, is derived and used in the integration process of DP-TBD. Simulation results show a significant gain in detection and tracking performance through accurately modeling the target amplitude fluctuations.