gebhart/patrepeval huggingface dataset:
Deep-learning enabled label-free bio-aerosol sensing using mobile microscopy (Conference Presentation) (2019)

There is an increasing but unmet need for accurate, label-free and automated bio-aerosol sensing. To address this need, we developed a high-throughput, cost-effective and portable bio-aerosol sensor based on computational microscopy and deep-learning. Our device is composed of an impactor and a lens-less digital holographic on-chip microscope. It screens air at 13 liters per minute, and captures bio-aerosols on the impactor substrate. An image sensor then records the in-line holograms of these captured bio-aerosols in real time. Using these recorded in-line holograms, the captured bio-aerosols are analyzed within a minute, facilitated by two deep convolutional neural networks (CNNs): the first CNN simultaneously performs auto-focusing and phase-recovery to reconstruct both the amplitude and phase images of each bio-aerosol with sub-micron resolution; and the second CNN performs automatic classification of the reconstructed bio-aerosols into pre-trained classes and counting their densities in air. As a proof-of-concept, we demonstrated reconstruction and label-free sensing of five different types of bio-aerosols: Bermuda grass pollen, oak tree pollen, ragweed pollen, Aspergillus spore, and Alternaria spore. These bio-aerosols form some of the most common allergens in air. Using our mobile bio-aerosol sensor, we achieved ~94% precision and recall in differentiating these bio-aerosols without the use of any labeling. We also demonstrated successful sensing of oak tree pollens in the field using our mobile device. To the best of our knowledge, this is the first demonstration of automated label-free sensing of bio-aerosols using a portable device, which is enabled by computational microscopy and deep-learning. It has broad applications in label-free bio-aerosol sensing and air-quality monitoring.
Indoor and Outdoor Foraging Locations of Pharaoh Ants (Hymenoptera: Formicidae) and Control Strategies Using Bait Stations (1994)

David H. Oi, Karen M. Vail, David F. Williams, Donald N. Bieman, Indoor and Outdoor Foraging Locations of Pharaoh Ants (Hymenoptera: Formicidae) and Control Strategies Using Bait Stations, The Florida Entomologist, Vol. 77, No. 1 (Mar., 1994), pp. 85-91
Stator analysis and design of a spherical piezoelectric motor (2009)

A spherical motor driven by piezoelectric actuators is developed. Each set of piezoelectric actuators are laid in a line around a spherical surface, which is designed to provide one degree-of-freedom motion. Applying appropriate voltage signal with phase difference on the neighboring actuators so that traveling wave is generated. All sets of a series of piezoelectric actuators are constructed mutually perpendicular. Curved piezoelectric actuator is designed in order to attach to the spherical surface. Stator design and analysis is presented in this article. Resonance frequency and vibration amplitude is estimated via ANSYS simulation. A sample of 2DOF is built to examine the performance of 1DOF and 2DOF by experiment. In comparison simulations with experimental results, they are in a good agreement. Performance evaluation of rotation speed and torque of the stator is also presented.
Polarized light Monte Carlo simulation of cervical collagen ultrastructure (Conference Presentation) (2019)

Polarized light microscopy and polarimetry has been used to assess changes in cervical structure by targeting its collagen. 75% of the human cervix is in fact composed of highly arranged collagen which is birefringent. Recently we have used Mueller Matrix polarimetry to image the human cervix in-vivo to determine loss of collagen arrangement associated with later stages of pregnancy. In an effort to improve our system capability and better determine the provenance of the polarized signal we have developed a Polarized Light Monte Carlo model capable of characterizing polarized light interaction with a birefringent, scattering, and absorbing medium such as the cervix. We have utilized this model to investigate the effect of cervical collagen arrangement typical of late stage in pregnancy on polarized light. In this talk we will illustrate the model framework, its validations, and provide several test cases in model cervices.
Preparation of silicon-on-gallium arsenide wafers for monolithic optoelectronic integration (1999)

A process is described which combines silicon-on-insulator (SOI) and wafer bonding techniques to create thin (/spl ap/100 nm) single-crystal silicon layers on oxide coated gallium arsenide wafers for use in optoelectronic integration. Using a GaAs substrate for the integration eliminates the thermal expansion coefficient mismatch problems which have blocked monolithic integration of thick, stress sensitive optoelectronic devices on silicon, without compromising the performance of CMOS circuitry which can be fabricated in very thin, compressively strained silicon layers using SOT techniques.
A Novel Electrophotographic System (1969)

A novel electrophotographic system is described which consists of a thin film of a transition metal oxide and a thin film photoconductive layer sandwiched between a pair of electrodes. When an electric field is applied across this composite structure and an optical image is projected on it, the resulting modulation of the conductivity pattern in the photoconductive layer causes a similar coloration pattern in the oxide layer, thereby forming a visible image. The formation of color centers and the associated optical and electrical properties are discussed.
A suppressive lymphokine of platelet cytotoxic functions. (1986)

The in vitro stimulation of mononuclear cells from human peripheral blood with mitogens is known to induce the release of factors (monokines and lymphokines) that possess distinct biologic activities. The present data describe the presence in Con A- and antigen-stimulated T cell supernatants (of man or rat) of a factor able to inhibit, in a dose-dependent manner, the platelet cytotoxicity toward the young larvae of Schistosoma mansoni. The production of oxygen metabolites by IgE-coated platelets, stimulated by anti-IgE or the specific antigen, was, likewise, strongly inhibited by this lymphokine. The producing T lymphocyte subpopulation was identified as OKT 8+. This suppressive lymphokine of platelet functions had an m.w. of 15,000 to 20,000 and a pI of 4.6. It was heat- and acid-stable and sensitive to trypsin and proteinase K, but neuraminidase had no effect on its activity. This platelet suppressive activity was specifically absorbed by platelet membrane, suggesting its action through the binding to a receptor.
Refinement and evaluation of a hydraulic bed sensor (2011)

Research indicates that long-term monitoring of vital signs and activity in elderly adults may provide opportunities for maintaining quality-of-life and extending independence into later years. Such a strategy requires development of a system to collect this data while imposing minimal intrusion into the lives of those being monitored. To further this goal, we have developed a hydraulic bed sensor to non-invasively monitor heartbeat and respiration during sleep. This paper describes the refinement of our developed prototype and signal processing methods, along with an evaluation of the robustness of our algorithms and results from testing. An evaluation of our sensor on a group of five diverse subjects (ranging in age from 24 to 67, two with cardiac history), in three different positions, demonstrates accuracy within 8 beats per minute up to 97.5% of the time.
Automatic detection of immutable fields in Java (2000)

This paper introduces techniques to detect mutability of fields and classes in Java. A variable is considered to be mutable if a new value is stored into it, as well as if any of its reachable variables is mutable. We present a static flow-sensitive analysis algorithm which can be applied to any Java component. The analysis classifies fields and classes as either mutable or immutable. In order to facilitate openworld analysis, the algorithm identifies situations that expose variables to potential modification by code outside the component, as well as situations where variables are modified by the analyzed code. We also present an implementation of the analysis which focuses on detecting mutability of class variables, so as to avoid isolation problems. The implementation incorporates intra- and inter-procedural data-flow analyses and is shown to be highly scalable. Experimental results demonstrate the effectiveness of the algorithms.
Efficient Culture Adaptation of Hepatitis C Virus Recombinants with Genotype-Specific Core-NS2 by Using Previously Identified Mutations (2010)

Hepatitis C virus (HCV) is an important cause of chronic liver disease, and interferon-based therapy cures only 40 to 80% of patients, depending on HCV genotype. Research was accelerated by genotype 2a (strain JFH1) infectious cell culture systems. We previously developed viable JFH1-based recombinants encoding the structural proteins (core, E1, E2), p7, and NS2 of prototype isolates of the seven major HCV genotypes; most recombinants required adaptive mutations. To enable genotype-, subtype-, and isolate-specific studies, we developed efficient core-NS2 recombinants from additional genotype 1a (HC-TN and DH6), 1b (DH1 and DH5), and 3a (DBN) isolates, using previously identified adaptive mutations. Introduction of mutations from isolates of the same subtype either led to immediate efficient virus production or accelerated culture adaptation. The DH6 and DH5 recombinants without introduced mutations did not adapt to culture. Universal adaptive effects of mutations in NS3 (Q1247L, I1312V, K1398Q, R1408W, and Q1496L) and NS5A (V2418L) were investigated for JFH1-based genotype 1 to 5 core-NS2 recombinants; several mutations conferred adaptation to H77C (1a), J4 (1b), S52 (3a), and SA13 (5a) but not to ED43 (4a). The mutations permitting robust virus production in Huh7.5 cells had no apparent effect on viral replication but allowed efficient assembly of intracellular infectious HCV for adapted novel or previously developed recombinants. In conclusion, previously identified mutations permitted development of novel HCV core-NS2 genotype recombinants. Mutations adapting several recombinants to culture were identified, but no mutations were universally adaptive across genotypes. This work provides tools for analysis of HCV genotype specificity and may promote the understanding of genotype-specific patterns in HCV disease and control.
Compression of Optically Encrypted Digital Holograms Using Artificial Neural Networks (2006)

Compression and encryption/decryption are necessary for secure and efficient storage and transmission of image data. Optical encryption, as a promising application of display devices, takes advantage of both the massive parallelism inherent in optical systems and the flexibility offered by digital electronics. We encrypt real-world three-dimensional (3D) objects, captured using phase-shift interferometry, by combining a phase mask and Fresnel propagation. Compression is achieved by nonuniformly quantizing the complex-valued encrypted digital holograms using an artificial neural network. Decryption is performed by displaying the encrypted hologram and phase mask in an identical configuration. We achieved good quality decryption and reconstruction of 3D objects with as few as 2 bits in each real and imaginary value of the encrypted data
Computational modelling of microwave tumour ablations (2013)

Microwave tissue heating is being increasingly utilised in several medical applications, including focal tumour ablation, cardiac ablation, haemostasis and resection assistance. Computational modelling of microwave ablations is a precise and repeatable technique that can assist with microwave system design, treatment planning and procedural analysis. Advances in coupling temperature and water content to electrical and thermal properties, along with tissue contraction, have led to increasingly accurate computational models. Developments in experimental validation have led to broader acceptability and applicability of these newer models. This review will discuss the basic theory, current trends and future direction of computational modelling of microwave ablations.
On the accuracy of cellular mobile station location estimation (2001)

This paper analyzes the accuracy of the multilateration techniques of possible application in mobile communications networks. A general mathematical framework including all the multilateration techniques that process absolute and/or relative distance measurements between the mobile station and multiple base transceiver stations is introduced. Based on this scheme, a general measure of positioning accuracy is first derived and then analyzed in the special cases defined by three techniques of possible implementation in GSM-based systems. A geometrical interpretation of the formulas that define the location accuracy and a comparison between the techniques from the geometric conditioning point of view are also given.
Research and development on heterogeneous type and spectrum sharing type cognitive radio systems (2009)

This paper introduces two cognitive radio (CR) systems: (a) heterogeneous type CR and (b) spectrum sharing type CR regarding its definition, usage model, fundamental system architecture, and developed prototype.
Efficient Filling of Disparity Holes Using Resolution Decoupling (2016)

We propose a novel highly efficient method for filling disparity holes, regions where disparity estimation fails to produce correct result, with the most plausible values. While the filling values may not exactly match the missing disparities, the filled disparity map has cohesive and smooth areas. Such disparity map enables many applications, such as refocusing and layer effects and other new 3D photography apps, to overcome artifacts due to holes and be visually pleasant for the user. To solve for the filling disparities, we incorporate the visual saliency in our model and decouple the solution complexity from the resolution of the original disparity map. Hence, our technique strikes a good balance between perceptual quality and computational efficiency. Overall, our method produces high quality results fulfilling or exceeding the requirements of practical applications that use depth. Moreover, it is fast and hence adequate to run on the ubiquitous mobile platforms.
Single-photon source and quantum memory (2003)

We have experimentally demonstrated a new kind of single-photon source and a cyclical quantum memory device for photonic qubits. These initial experiments involved storage loops, active switching, and parametric down-conversion photon pairs.
ChemInform Abstract: THIOL‐CONTAINING ANDROGENS AS SUICIDE SUBSTRATES OF AROMATASE (1985)

Abstract Die entsprechend dem Formelschema dargestellten Thiol‐substituierten Androgene (VII) und (X) wirken inaktivierend auf die Aromatase menschlicher Plazenta‐Microsomen.
A Gridded Electron Gun for a Sheet Beam Klystron (2003)

Calabazas Creek Research, Inc.(CCR) is developing rectangular, gridded, thermionic, dispenser‐cathode guns for sheet beam devices. The first application is expected to be klystrons for advanced particle accelerators and colliders. The current generation of accelerators typically use klystrons with a cylindrical beam generated by a Pierce‐type electron gun. As RF power is pushed to higher levels, space charge forces in the electron beam limit the amount of current that can be transmitted at a given voltage. The options are to increase the beam voltage, leading to problems with X‐Ray shielding and modulator and power supply design, or to develop new techniques for lowering the space charge forces in the electron beam. In this device, the beam has a rectangular cross section. The thickness is constrained as it would in a normal, cylindrically symmetric klystron with a Pierce gun. However, the width of the beam is many times the thickness, and the resulting cross sectional area is much larger than in the conventional device. This allows much higher current and/or a lower voltage before space charge forces become too high. The current program addresses issues related to beam formation at the emitter surface, design and implementation of shadow and control grids in a rectangular geometry. It is directed toward a robust, cost‐effective, and reliable mechanical design. A prototype device will be developed that will operate at 415 kV, 250 A for an 80 MW, X‐Band, sheet‐beam klystron. The cathode will have 100 cm2 of cathode area with an average cathode current loading of 2.5 A/cm2. For short pulse formation, the use of a grid was chosen. The gun has been designed with a combination of 2‐D and 3‐D codes. 2‐D codes were used to determine the starting point for the electrodes to produce the compression (which is in only 1 direction.) These results showed that a very high quality beam could be achieved even in the presence of the shadow grid. 3‐D results have shown that the quality can be maintained for the actual geometry. Final designs of the gun are being completed, and fabrication is expected to begin in the spring of 2003. Details of the design will be reported.
Photonic crystal microcavities for chip‐based cavity QED (2005)

Abstract The suitability of recently demonstrated high quality factor ( Q ), ultra‐small mode volume ( V eff ) graded square lattice photonic crystal microcavities for cavity QED experiments is discussed. In addition to the basic importance of the Q and V eff of such cavities, other issues of both practical and fundamental relevance are considered. Included amongst these are the robustness of the cavity's performance to fabrication errors and the ability to efficiently source and collect light from the cavity through conventional fiber optics. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Alpha1-antitrypsin replacement therapy controls fibromyalgia symptoms in 2 patients with PI ZZ alpha1-antitrypsin deficiency. (2004)

Two Spanish sisters with alpha1-antitrypsin (AAT) deficiency and fibromyalgia (FM) started AAT replacement therapy with commercial alpha1-antitrypsin infusions in 1992. They both experienced a rapid, progressive, and constant control of their FM symptoms during the next 6 years (1992-98). However, in 1998, treatment of both patients was affected by the worldwide commercial shortage of AAT replacement therapy; replacement therapy infusions were halted for about 4-6 consecutive months every year for 5 years. As a result, we observed a striking recurrence of FM symptoms. Equally striking was the total disappearance of these symptoms when AAT replacement therapy infusions were resumed.
Recent Advances in Radio‐Frequency Coil Technologies: Flexible, Wireless, and Integrated Coil Arrays (2021)

Radio-frequency (RF) coils are to magnetic resonance imaging (MRI) scanners what eyes are to the human body. Because of their critical importance, there have been constant innovations driving the rapid development of RF coil technologies. Over the past four decades, the breadth and depth of the RF coil technology evolution have far exceeded the space allowed for this review article. However, these past developments have laid the very foundation on which some of the recent technical breakthroughs are built upon. Here, we narrow our focus on some of the most recent RF coil advances, specifically, on flexible, wireless, and integrated coil arrays. To provide a detailed review, we discuss the theoretical underpinnings, experimental implementations, promising results, as well as future outlooks covering these exciting topics. These recent innovations have greatly improved patient comfort and ease of scan, while also increasing the signal-to-noise ratio, image resolution, temporal throughput, and diagnostic and treatment accuracy. Together with advances in other MRI subfields, they will undoubtedly continue to drive the field forward and lead us to an ever more exciting future. LEVEL OF EVIDENCE: 5 TECHNICAL EFFICACY: Stage 1.
Tracking system for controlling the radial positioning of a transducer on a disc medium (1987)

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Image retrieval based on edge representation (2002)

Content-based image retrieval from large collections of images is a challenging task; especially retrieval based on edges. We present a fast algorithm for image retrieval by sketch or image example. The images in the database are archived in a hash table, where the addresses of the entries in the table are derived from the edge orientations in predefined regions of the images. In the retrieval stage, images that have regions similar to the regions of the query image are retrieved from the hash table and a voting is performed to rank the images according to their similarity to the query. Experimental results show that the algorithm is robust.
Developing Bright and Color-Saturated Quantum Dot Light Emitting Diodes towards Next Generation Displays and Solid State Lighting (2008)

We report in this conference of our recently developed red, orange, yellow, green and blue Quantum dot light-emitting diodes (Qdot-LEDs)-LEDs with high brightness, high efficiency, saturated color and long lifetime.
Plasma Antibodies against <i>Trichomonas vaginalis</i> and Subsequent Risk of Prostate Cancer (2006)

Serologic evidence of a history of trichomonosis was positively associated with incident prostate cancer in this large, nested case-control study of male health professionals. As this study is the first, to our knowledge, to investigate associations between T. vaginalis serology and prostate cancer, additional studies are necessary before conclusions can be made.
Experimental evaluation of material identification methods with CdTe X-rays spectrometric detector (2010)

This paper presents multi dimensional approaches for material identification applied on experimental X-ray measurements obtained with CdTe spectrometric detector. LETI has been developing a 16 channels fast read-out electronics capable to perform spectrometric measurements at count rates above 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">7</sup> counts/s. The read-out electronics was coupled to CdTe linear array pixel detectors. A multidimensional analysis of the measured spectra has been developed to perform material identification. The results show a decrease of false detection rate by a factor up to 2 compared to an optimised dual counting approach applied on the same spectrometric raw data. Compared to a sandwich detector, the false detection rate is decreasing by a factor higher than 3 for thin objects. Generally, the paper demonstrates quantitatively the continuous performance and robustness increase with the number of detector energy channels.