Miracle-dz/UniFAR-FTUs huggingface dataset:
LaserPen: a new pointing device for a beam projector

We propose a new pointing device for a beam projector that we call a LaserPen system. The basic idea is to detect a laser spot on the screen and use its coordinates to control the GUI cursor so that the two may coincide. While this idea can be easily realized by using a camera and a simple image processing technique, the novel part of our implementation is to share the same optical channel among a projector and a camera so that the focusing and alignment of a camera may be done at the same time as a projector is focused and aligned. In a usability test in comparison with other pointing devices, we could confirm that, due to its directness, the LaserPen system have the potential to become a highly favorable pointing device for a beam projector.
Sphingosine‐1‐phosphate reduces hepatic ischaemia/reperfusion‐induced acute kidney injury through attenuation of endothelial injury in mice

Aim: Hepatic ischaemia/reperfusion injury (IRI) frequently complicates acute kidney injury (AKI) during the perioperative period. This study was to determine whether hepatic IRI causes AKI and the effect of the sphingosine‐1‐phosphate (S1P) on AKI.
The Detection of Microembolic Signals in Patients at Risk of Recurrent Cardioembolic Stroke: Possible Therapeutic Relevance

The clinical predictors and potential therapeutic implications of microembolic signals (MES) were investigated in 104 patients with ischemic stroke or transient ischemic attack associated with high-risk (n = 60) or low-risk (n = 44) cardiac emboligenic conditions. Patients with artificial valves and carotid stenosis were excluded. MES counts were based on 30-min bilateral middle cerebral artery transcranial Doppler (TCD) monitoring recordings. MES were detected in 15 subjects (14%). The mean number of MES per hour was 1.9. MES prevalence and counts were influenced neither by age, gender or type of cerebral event, nor by cardiac disease. MES were more frequently detected and greater in number in patients with multiple cerebral ischemic events and in subjects monitored within 1 month of the last event. By multiple logistic regression, TCD recording within 1 month of the last event [Odds ratio (OD) = 13.5; 95% confidence intervals (CI) = 3.3–54.3] and multiple cerebral events (OD = 4.7; 95% CI = 1.3–17.3) were the best MES predictors. MES were detected in 40% (4/10) of patients on heparin, 5% (2/4) of untreated subjects and 13% (5/39) of those on antiplatelet drugs. For patients on warfarin, MES counts and prevalence were similar in subjects with international normalized ratios (INR) below and within/above the therapeutic range. MES were detected in only 2 out of 16 subjects with INR <2 and in 1 with INR >2. MES detection can be potentially relevant to the selection of antithrombotic treatment in acute stroke associated with cardioembolic disease, but further studies are necessary to assess its effectiveness as an additional guide to monitor oral anticoagulant intensity.
Identification of Enterotoxigenic Escherichia coli and Serum Antitoxin Activity by the Vascular Permeability Factor Assay

Twenty-five strains of enterotoxigenic (tox+) Escherichia coli isolated in India, Bangladesh, and the U.S.A. were shown to produce vascular permeability factor (PF) activity as well as diarrheagenic activity. Sixteen strains of non-enterotoxigenic E. coli were found to be PF negative. The PF response elicited by tox+E. coli isolated in the U.S.A. from cases of infantile diarrhea was qualitatively different and more difficult to demonstrate. However, this problem was surmounted by assaying 25-fold concentrates of the crude enterotoxin of these strains. PF activity of various strains of tox+E. coli was neutralized by anti-PF antiserum prepared against the enterotoxin of strain H-10407. This anti-PF antiserum also neutralized PF activity of Vibrio cholerae enterotoxin (choleragen). Antiserum containing antibody specific for purified choleragen neutralized E. coli PF activity. These and other results indicate that the PF activity of E. coli is a function of the diarrheagenic enterotoxin as is known to be the case with choleragen. We conclude that the PF assay can be employed for the identification of tox+E. coli and for the detection of antitoxic antibody.
Clustering techniques and statistical fault injection for selective mitigation of SEUs in flip-flops

In large SoCs, managing the effects of soft-errors in flip-flops is essential, however, selective mitigation is necessary to minimize the area and power costs. The identification of the optimal set of flip-flops to protect typically requires compute-intensive fault-injection campaigns. We present new techniques which group similar flip-flops into clusters to significantly reduce the number of fault injections. The number of required fault injections can be significantly lower than the total number of flip-flops and in one industrial design with over 100,000 flip-flops, by simulating only 2,100 fault injections, the technique identified a set of 4.1% of the flip-flops, which when protected, reduced the critical failure rate by a factor of 7x.
Flux Field and Thrust Analysis of Permanent-Magnet Linear Machines With Isolated Movers

A novel permanent-magnet linear machine that consists of several isolated movers and one single stator is proposed in this paper. It is especially suitable for tasks requiring multiple drive machines. Each mover can produce independent thrust and flexible motions by interacting with the stator poles. Compared with conventional multimotor driven system, it helps to achieve more compact size, and thus improve the system working efficiency. The design concept is presented, and the magnetic field distribution in the machine is formulated analytically. The influence of magnetization patterns and back iron is included in the analysis. The research result indicates that the employment of same-magnetization pattern helps to improve the magnetic flux density and thus the thrust output of the system. A research prototype of the linear machine with two isolated movers is developed. Numerical computation and experiment measurement are carried out to verify the analytical models. Comparison shows that the analytical model fits with finite-element analysis and experimental results well, and the influence between the mover motions is negligible. The similar design concept of multimover and single-stator can be implemented into other rotary electromagnetic machines.
The Existence of Two Stages in the Transition to Three-Dimensionality of a Cylinder Wake

The transition to three‐dimensionality in the near wake of a circular cylinder involves two successive transitions, each of which corresponds with a discontinuity in the Strouhal–Reynolds number relationship. The first discontinuity [between Reynolds numbers (Re) of 170 to 180] is associated with the inception of vortex loops, and it is hysteretic. The second discontinuity (between Re=230 to 260) corresponds with a change to a finer‐scale streamwise vortex structure. At this discontinuity there is no hysteresis, and it is suggested that two modes of vortex shedding alternate in time.
Enforcement Problems and Secondary Markets

There is a large and growing literature that studies the effects of weak enforcement institutions on economic performance. This literature has focused almost exclusively on primary markets, in which assets are issued and traded to improve the allocation of investment and consumption. The general conclusion is that weak enforcement institutions impair the workings of these markets, giving rise to various inefficiencies. But weak enforcement institutions also create incentives to develop secondary markets, in which the assets issued in primary markets are retraded. This paper shows that trading in secondary markets counteracts the effects of weak enforcement institutions and, in the absence of further frictions, restores efficiency.
Experience of acute hepatitis C and HIV co-infection in an inner city clinic in the UK

Acute hepatitis C infection (HCV) is increasing in the HIV‐infected population, particularly among men who have sex with men (MSM). Patients co‐infected with HCV and HIV progress more rapidly to liver cirrhosis and are at higher risk of hepatocellular carcinoma. We looked at our management of acute HCV to assess treatment outcome.
EUS-guided fine needle aspiration with and without trucut biopsy of pancreatic masses.

CONTEXT Endoscopic ultrasound-guided trucut biopsy (EUS TCB) has a lower yield than fine needle aspiration (FNA) in pancreatic masses but the additional use of TCB to FNA may improve the diagnostic accuracy over FNA alone. OBJECTIVE To compare the yield of EUS FNA alone or combined with EUS TCB for diagnosis of pancreatic masses. DESIGN Single center retrospective case control study conducted at academic tertiary center. Study conducted between March 2004 and April 2007. PARTICIPANTS A total of 126 consecutive patients referred for EUS guided biopsy of pancreatic mass; three patients excluded from analysis, final cohort comprised 123 patients (108 malignant and 15 benign). EUS FNA was performed in 72 patients and EUS FNA+TCB was performed in 51 patients. MAIN OUTCOME MEASURES The diagnostic performance of EUS FNA versus EUS FNA+TCB was compared. RESULTS The sensitivity, specificity and frequency of cases correctly identified for malignancy of FNA alone were 87.1% (54/62), 100% (10/10) and 88.8% (64/72), while for the combination of FNA+TCB they were: 95.7% (44/46), 100% (5/5) and 96.0% (49/51), respectively (P=0.184, 1.000, and 0.193 FNA versus FNA+TCB). No major complication occurred in either group. CONCLUSION FNA+TCB can be safely performed in selected lesions but sensitivity is not statistically improved over FNA alone (95.7% versus 87.1%).
Biosynthesis and Radical Scavenging Activity of Betalains during the Cultivation of Red Beet (Beta vulgaris) Hairy Root Cultures

Betalains biosynthesis and antiradical scavenging activity were investigated during cultivation of four hairy root cultures of Beta vulgaris, obtained from different cultivars (Bordo, Egyptian, Detroit 2 and Detroit Dark Red). The best producer of betalains was a hairy root culture from Beta vulgaris cv. Detroit Dark Red (13.27 mg/g dry weight total pigment production). The ethanol extract, derived from roots of the same culture grown for 15 days under submerged conditions, showed a high antiradical activity (83% of inhibition of the stable DPPH·).
A cooperative ARQ scheme for multi-hop underwater acoustic sensor networks

We propose an efficient cooperative ARQ (Automatic Repeat request) scheme for multi-hop underwater acoustic communications, in which cooperative nodes are used to provide more reliable alternative paths for a specific source-relay-destination connection. Based on the knowledge of inter-node distances, a cooperative region is defined to include all possible candidates for cooperative nodes from a given pair of source-relay-destination nodes. When the relay (destination) node receives an erroneous packet, it asks for retransmission from a cooperative node, which is selected in a closest-one-first manner from the nodes in the cooperative region. The selection procedure continues until the retransmission is successful. In addition, during a packet-relay through multiple hops, the typical acknowledgement (ACK) signal is replaced with overhearing data packet returned back from the next hop. In this paper, we evaluate the proposed scheme by comparing it with a conventional S&W ARQ in terms of throughput efficiency. Computer simulation results show that the proposed cooperative retransmission scheme can significantly improve the throughput by increasing the probability of successful retransmission.
Time-domain analysis of the electromagnetic coupling in satellite environments

Inward electromagnetic radiation aboard a satellite may damage the internal electronic equipment To model the energy coupling through the chassis apertures, numerical hybrid techniques are sometimes used. In this context, a time-domain analysis, based on the FDTD method and signal processing tools, is proposed to account for the dependence of internal observables on the aperture electric fields.
Deep Siamese Network with Multi-level Similarity Perception for Person Re-identification

Person re-identification (re-ID), which aims at spotting a person of interest across multiple camera views, has gained more and more attention in computer vision community. In this paper, we propose a novel deep Siamese architecture based on convolutional neural network (CNN) and multi-level similarity perception. According to the distinct characteristics of diverse feature maps, we effectively apply different similarity constraints to both low-level and high-level feature maps, during training stage. Therefore, our network can efficiently learn discriminative feature representations at different levels, which significantly improves the re-ID performance. Besides, our framework has two additional benefits. Firstly, classification constraints can be easily incorporated into the framework, forming a unified multi-task network with similarity constraints. Secondly, as similarity comparable information has been encoded in the network's learning parameters via back-propagation, pairwise input is not necessary at test time. That means we can extract features of each gallery image and build index in an off-line manner, which is essential for large-scale real-world applications. Experimental results on multiple challenging benchmarks demonstrate that our method achieves splendid performance compared with the current state-of-the-art approaches.
Linguistic Markers of Secrets and Sensitive Self-Disclosure in Twitter

The present research sought to identify linguistic markers of sensitive self-disclosure in Twitter for three main purposes: (1) to support the development of software tools that can identify text as sensitive disclosure or not, (2) to contribute to the literature by establishing what is considered more sensitive disclosure in a specific CMC environment, and (3) to contribute to the methodological toolkit for studying sensitive self-disclosure. Two corpora were used in the present research. In Study 1 short messages were collected from Twitter and the site 'Secret Tweet' for comparison. In Study 2 'tweets' were collected and rated on sensitivity by six raters. LIWC and regression analyses were used to identify the linguistic markers of secret tweets (Study 1, 16 markers found) and sensitive self-disclosure (Study 2, 10 markers found). A software tool is developed to illustrate the markers in application. Implications for self-disclosure research, users, design and researchers are discussed.
Injection studies on the isis synchrotron

The ISIS Facility at the Rutherford Appleton Laboratory in the UK produces intense neutron and muon beams for condensed matter research. It is based on a 50 Hz proton synchrotron which, once the commissioning of a new dual harmonic RF system is complete, will accelerate about 3.5 x 1013 protons per pulse from 70 to 800 MeV, corresponding to mean beam powers of 0.2 MW. The multi-turn charge-exchange injection process strongly affects transverse beam distributions, space charge forces, beam loss and therefore operational intensity. The evolution of longitudinal distributions and subsequent trapping efficiency is also intimately linked with injection. Optimising injection is therefore a key consideration for present and future upgrades. Work is now under way looking at this process in more detail, and relates closely to other transverse space charge studies on the ring. This paper presents work including: space charge simulations of the present machine and comparison with observations; assessment of related loss mechanisms; and study of optimal painting schemes. Plans and preparations for more detailed experimental work are also summarised.
Millimeter-wave and terahertz sources and imaging systems based on 45nm CMOS technology

This paper presents the recent advances in sources and imaging arrays for >100 GHz applications. For sources, multiplier approach has recently demonstrated 1 mW of power at 200 GHz using 45 nm CMOS technology. For active imaging arrays, high-efficiency on-chip antennas coupled with low-noise CMOS SOI detectors are built at 300 GHz and 1 THz for low NEP systems.
Content-Based Image Retrieval Using Features Extracted From Halftoning-Based Block Truncation Coding

 Abstract —This paper presents a technique for Content-Based Image Retrieval (CBIR) by exploiting the advantage of low complexity Ordered-Dither Block Truncation Coding (ODBTC) for the generation of image content descriptor. In encoding step, ODBTC compresses an image block into corresponding quantizers and bitmap image. Two image features are proposed to index an image, namely Color Co-occurrence Feature (CCF) and Bit Pattern Features (BPF), which are generated directly from ODBTC encoded data streams without performing the decoding process. The CCF and BPF of an image are simply derived from the two ODBTC quantizers and bitmap, respectively, by involving the visual codebook. Experimental results show that the proposed method is superior to the Block Truncation Coding (BTC) image retrieval systems and the other former methods, and thus prove that the ODBTC scheme is not only suited for image compression since of its simplicity, but also offers a simple and effective descriptor to index images in CBIR system.
Recognition physical activities with optimal number of wearable sensors using data mining algorithms and deep belief network

Daily physical activities monitoring is benefiting the health care field in several ways, in particular with the development of the wearable sensors. This paper adopts effective ways to calculate the optimal number of the necessary sensors and to build a reliable and a high accuracy monitoring system. Three data mining algorithms, namely Decision Tree, Random Forest and PART Algorithm, have been applied for the sensors selection process. Furthermore, the deep belief network (DBN) has been investigated to recognise 33 physical activities effectively. The results indicated that the proposed method is reliable with an overall accuracy of 96.52% and the number of sensors is minimised from nine to six sensors.
Influences of sinusoidal component on typical phase masks used to realize wave-front coding technique

The key of wave-front coding lies in the design of suitable phase masks. In our recent research, by combining a sinusoidal component with the cubic phase mask, a new mask called cubic sinusoidal phase mask, abbreviated as CSPM is proposed and can enhance the DOF (depth of field) extension capability of cubic mask. However, that work needs further expansion. First, only the cubic phase mask is selected to demonstrate the effectiveness of sinusoidal component in improving the performance of wave-front coded imaging system, but this is not enough; second, several constraints, which are adopted to simplify the CSPM optimization, should be eliminated. In this paper, the researches have been expanded based on the two points mentioned above and the sinusoidal component is indeed useful for improving DOF extension capability of existing phase masks.
Genetic Analysis Workshop 13: Introduction to workshop summaries

Laura Almasy, L. Adrienne Cupples, E. Warwick Daw, Daniel Levy, Duncan Thomas, John P. Rice, Susan Santangelo, and Jean W. MacCluer Department of Genetics, Southwest Foundation for Biomedical Research, San Antonio, Texas Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts Department of Epidemiology, University of Texas M.D. Anderson Cancer Center, Houston, Texas Framingham Heart Study, National Heart, Lung, and Blood Institute, Framingham, Massachusetts Department of Preventive Medicine, University of Southern California, Los Angeles, California Department of Psychiatry, Washington University School of Medicine, St. Louis, Missouri Psychiatric and Neurodevelopmental Genetics Unit, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
Neurophysiological and Behavioral Measures of Musical Engagement

Inter-subject correlations (ISCs) of cortical responses have been shown to index audience engagement with narrative works. In parallel lines of research, continuous self-reports and physiological measures have linked listener engagement and arousal with specific musical events. Here we combine EEG-ISCs, physiological responses, and continuous self-reports to assess listener engagement and arousal in response to a full-length musical excerpt. The temporal resolution of these measures permits connections to be drawn among them, and also to corresponding musical events in the stimulus. Simultaneous 128-channel EEG, ECG, and respiratory inductive plethysmography were recorded from 13 musicians who heard the first movement of Elgar’s E-Minor Cello Concerto in original and reversed conditions. Continuous self-reports of engagement with each excerpt were collected in a separate listen. ISCs of EEG responses were computed in the subspace of its maximally correlated component. Temporally resolved measures of activity and synchrony were computed from heart rate, respiratory rate, respiratory amplitude, and continuous behavioral responses. Results indicate that all but one of the response measures (heart rate activity) achieves statistical significance over the course of the original excerpt. Furthermore, regions of statistical significance can be linked to salient musical events. Finally, activity and synchrony of a given physiological or behavioral response at times occur in alternation, highlighting the utility of considering both measures. These findings constitute a first step toward relating EEG-based measures of engagement to physiology and behavior, while also helping to further disentangle engagement and arousal.
Nanostructured Singlet Fission Photovoltaics Subject to Triplet‐Charge Annihilation

Singlet exciton fission is an efficient multiple-exciton generation process that is vulnerable to a characteristic loss process: triplet-charge annihilation. This loss process is characterized in singlet-fission photovoltaics and losses as high as 40% are observed in poorly designed devices. Techniques are demonstrated to improve charge extraction and reduce triplet-charge annihilation to negligible levels at short-circuit conditions.
Proposal for new method to design all-dielectric photonic metamaterials using an analytical approach

We propose a new analytical approach to the study of all-dielectric metamaterials allowing the prediction of the optical index maps and the required hole drilling distributions making light follow prescribed paths. The method will be applied to proof-of-concept structures based on the silicon-on-insulator technology. Light propagation will be studied using FDTD simulation to verify light trajectories, study the influence of extended light beams, and evaluate the robustness of the semi-classical approach based on equations of Hamiltonian optics. The presented results will show that the proposed method can be used for the straightforward design of new optical functionalities within the photonic metamaterial regime.
GRISCELLI SYNDROME: Description of a Case with Rab27A Mutation

A 7-month-old Turkish boy presented with partial albinism and typical clinical features of an accelerated phase, suggesting the diagnosis of Griscelli syndrome. The diagnosis was confirmed by light microscopic evaluation of hair and a peripheral blood smear. Genetic analysis identified a mutation in the Rab27A gene. He was initiated immunosuppressive treatment but accelerated phase could not be ameliorated. He unfortunately died from multiorgan failure. The finding of partial albinism in children should alert clinicians to consider Griscelli syndrome since simple methods can corfirm the diagnosis and early diagnosis is life-saving.