gebhart/patrepeval huggingface dataset:
Tomographic imaging of electrical conductivity using low‐frequency electromagnetic fields (1992)

PreviousNext No AccessSEG Technical Program Expanded Abstracts 1992Tomographic imaging of electrical conductivity using low‐frequency electromagnetic fieldsAuthors: K. H. LeeG. Q. XieK. H. LeeLawrence Berkeley Lab and G. Q. XieLawrence Berkeley Labhttps://doi.org/10.1190/1.1822098 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InReddit Permalink: https://doi.org/10.1190/1.1822098FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 1992ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 1992 Pages: 1410 publication data© 1992 Copyright © 1992 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 10 Feb 2005 CITATION INFORMATION K. H. Lee and G. Q. Xie, (1992), "Tomographic imaging of electrical conductivity using low‐frequency electromagnetic fields," SEG Technical Program Expanded Abstracts : 389-392. https://doi.org/10.1190/1.1822098 Plain-Language Summary PDF DownloadLoading ...
Techniques for improving regression testing in continuous integration development environments (2014)

In continuous integration development environments, software engineers frequently integrate new or changed code with the mainline codebase. This can reduce the amount of code rework that is needed as systems evolve and speed up development time. While continuous integration processes traditionally require that extensive testing be performed following the actual submission of code to the codebase, it is also important to ensure that enough testing is performed prior to code submission to avoid breaking builds and delaying the fast feedback that makes continuous integration desirable. In this work, we present algorithms that make continuous integration processes more cost-effective. In an initial pre-submit phase of testing, developers specify modules to be tested, and we use regression test selection techniques to select a subset of the test suites for those modules that render that phase more cost-effective. In a subsequent post-submit phase of testing, where dependent modules as well as changed modules are tested, we use test case prioritization techniques to ensure that failures are reported more quickly. In both cases, the techniques we utilize are novel, involving algorithms that are relatively inexpensive and do not rely on code coverage information -- two requirements for conducting testing cost-effectively in this context. To evaluate our approach, we conducted an empirical study on a large data set from Google that we make publicly available. The results of our study show that our selection and prioritization techniques can each lead to cost-effectiveness improvements in the continuous integration process.
Optimal design of a second-order fibre-optic gyroscope dynamic system (1994)

In this paper, the authors have developed a phase-domain model to analyse a nonlinear fibre-optic gyroscope system theoretically, and use it to obtain the optimally designed system with a second-order controller. From computer simulations and experimental results, one can design a fibre-optic gyroscope system with optimal performance specifications, such as steady state accuracy, percentage overshoot and rise time; ensure that the optimal second-order system is superior to the optimal first-order system in both steady state error and dynamic responses; realize a highly stable second-order fibre-optic gyroscope system with fast response and less overshooting; and optimize it without trial and error efforts.
Category-Independent Object Proposals with Diverse Ranking (2014)

We propose a category-independent method to produce a bag of regions and rank them, such that top-ranked regions are likely to be good segmentations of different objects. Our key objectives are completeness and diversity: Every object should have at least one good proposed region, and a diverse set should be top-ranked. Our approach is to generate a set of segmentations by performing graph cuts based on a seed region and a learned affinity function. Then, the regions are ranked using structured learning based on various cues. Our experiments on the Berkeley Segmentation Data Set and Pascal VOC 2011 demonstrate our ability to find most objects within a small bag of proposed regions.
Use of an Animal Model in Studies of Bacterial Corneal Infection (1999)

Despite medical advancements in available therapies, bacterial corneal infection frequently results in vision loss. Contact lens wear is a common predisposing factor for corneal infection; other reported risk factors are dry eye syndrome, blepharitis, trauma, and surgery. Both the immune defense against infection and the pathogenic mechanisms bacteria employ have been studied in vitro. However, there are complex interactions between the pathogen, the immune system, and the corneal tissue in vivo. Animal models allow the researcher to take the results of in vitro assays and validate their role in corneal infection in a living organism. A murine model is frequently used for studies of the pathogenesis of corneal infection caused by Pseudomonas aeruginosa. In this study, a modified scoring system is introduced that was designed to increase the information derived from this infection model. The new system includes evaluation of area, density, and surface characteristics of the ulceration. Results of in vitro experiments had previously indicated that ExsA, a transcriptional regulator of virulence-associated proteins, was important in pathogenesis of corneal infection caused by P. aeruginosa. Here we use the new scoring system to demonstrate in vivo that ExsA is involved.
Automatic Liver Segmentation Based on Shape Constraints and Deformable Graph Cut in CT Images (2015)

Liver segmentation is still a challenging task in medical image processing area due to the complexity of the liver's anatomy, low contrast with adjacent organs, and presence of pathologies. This investigation was used to develop and validate an automated method to segment livers in CT images. The proposed framework consists of three steps: 1) preprocessing; 2) initialization; and 3) segmentation. In the first step, a statistical shape model is constructed based on the principal component analysis and the input image is smoothed using curvature anisotropic diffusion filtering. In the second step, the mean shape model is moved using thresholding and Euclidean distance transformation to obtain a coarse position in a test image, and then the initial mesh is locally and iteratively deformed to the coarse boundary, which is constrained to stay close to a subspace of shapes describing the anatomical variability. Finally, in order to accurately detect the liver surface, deformable graph cut was proposed, which effectively integrates the properties and inter-relationship of the input images and initialized surface. The proposed method was evaluated on 50 CT scan images, which are publicly available in two databases Sliver07 and 3Dircadb. The experimental results showed that the proposed method was effective and accurate for detection of the liver surface.
3:1 Molecular Complex of Hydroquinone and C<sub>60</sub> (1991)

Abstract The preparation of a 3:1 complex of hydroquinone (HQ) and C 60 , (HQ) 3 C 60 , is reported and its X‐ray crystal structure described. The HQ host builds up a single H‐bonded super‐polonium network with super‐cubes as building blocks, which accommodate the large C 60 guest molecules. The enclathration of C 60 is rather tight (high density of the complex) owing, in part, to favorable charge‐transfer host‐guest interactions (π‐donor‐acceptor complex). Nonetheless, the C 60 molecules arc orientationally disordered, and no individual bond lengths could be measured. In contrast, the HQ host network is essentially ordered and well‐defined with normal intramolecular geometry. No appreciable (powder) conductivity could be observed for (HQ) 3 C 60 , yet ESR spectra of single crystals showed interesting narrow signals.
Thrombospondin-1 Peptide ABT-510 Combined with Valproic Acid Is an Effective Antiangiogenesis Strategy in Neuroblastoma (2007)

In the pediatric cancer neuroblastoma, clinically aggressive disease is associated with increased levels of angiogenesis stimulators and high vascular index. We and others have hypothesized that blocking angiogenesis may be effective treatment for this pediatric malignancy. However, little is known about the efficacy of antiangiogenic agents in pediatric malignancies. Recently, promising results have been reported in an adult phase I study of ABT-510, a peptide derivative of the natural angiogenic inhibitor thrombospondin-1. Histone deacetylase inhibitors, such as valproic acid (VPA), have also been shown to have antiangiogenic activity in several cancer models. In this study, we evaluated the effects of ABT-510 and VPA on neuroblastoma tumor growth and angiogenesis. Although only VPA was capable of blocking the proliferation of neuroblastoma cells and inducing neuroblastoma cell apoptosis in vitro, treatment with VPA or ABT-510 alone significantly suppressed the growth of neuroblastoma xenografts established from two different MYCN-amplified cell lines. Combination therapy more effectively inhibited the growth of small neuroblastoma xenografts than single-agent treatment, and in animals with large xenografts, total cessation of tumor growth was achieved with this treatment approach. The microvascular density was significantly reduced in the xenografts treated with combination therapy compared with controls or tumors treated with single agents. In addition, the number of structurally abnormal vessels was reduced, suggesting that these agents may "normalize" the tumor vasculature. Our results indicate that ABT-510 combined with VPA may be an effective antiangiogenic treatment strategy for children with high-risk neuroblastoma.
Adversarial Attacks on Neural Network Policies (2017)

Machine learning classifiers are known to be vulnerable to inputs maliciously constructed by adversaries to force misclassification. Such adversarial examples have been extensively studied in the context of computer vision applications. In this work, we show adversarial attacks are also effective when targeting neural network policies in reinforcement learning. Specifically, we show existing adversarial example crafting techniques can be used to significantly degrade test-time performance of trained policies. Our threat model considers adversaries capable of introducing small perturbations to the raw input of the policy. We characterize the degree of vulnerability across tasks and training algorithms, for a subclass of adversarial-example attacks in white-box and black-box settings. Regardless of the learned task or training algorithm, we observe a significant drop in performance, even with small adversarial perturbations that do not interfere with human perception. Videos are available at http://rll.berkeley.edu/adversarial.
ARTS, CULTURE AND TOURISM AS VERITABLE INSTRUMENTS OF A STABLE NIGERIAN POLITY: THE NEED FOR AN INCLUSIVE PUBLIC POLICY (2021)

Like in most other nations of the world, the round leather game (football) is one sport that triggers the display of solidarity among Nigerians irrespective of tribe, religion and other social affiliations. Another experience of a similar magnitude of show of solidarity in this country is the Festivals of Arts and Culture which also displays the potentials in tourism. This study examined the potentials of Arts, Culture and Tourism as instruments of unification of Nigerians for purposes of a stable Nigerian political environment as well as the need for an inclusive public policy. Data was obtained from secondary materials while the mode of analysis was content analysis. The secondary materials include – books, journals, periodicals, newspapers, the internet, etc. The sociological and anthropological modernized theory, Durkheim (1997) was adopted as the theoretical framework of the study. Findings showed that, the Festivals of Arts and Culture across this country are often associated with so much fanfare, enthusiasm, relaxation, show of solidarity, oneness, that people tend to forget their social identities, groups, ethnicities, religions and other social inclinations. Hence, this paper suggested that government evolves an inclusive policy that would regularize and formalize the organization of Festivals of Arts and Culture in this country. The paper came to the conclusion that such festivals with great potentials for the unification of nationals should be harnessed for purposes of the peaceful co-existence of all Nigerians. The paper noted that this could only be realized through a well-articulated and inclusive public policy on Arts, Culture and Tourism.
Breast Cancer Subtypes Based on ER/PR and Her2 Expression: Comparison of Clinicopathologic Features and Survival (2009)

Adedayo A. Onitilo, MD, MSCR, FACP, Jessica M. Engel, MSN, FNP-BC, Robert T. Greenlee, PhD and Bickol N. Mukesh, PhD Adedayo A. Onitilo, MD, MSCR, FACP, Department of Hematology/Oncology, Marshfield Clinic Weston Center, 3501 Cranberry Blvd, Weston, Wisconsin 54401 Jessica M. Engel, MSN, FNP-BC, Department of Hematology/Oncology, Marshfield Clinic, 1000 North Oak Avenue, Marshfield, Wisconsin 54449 Robert T. Greenlee, PhD, Epidemiology Research Center, Marshfield Clinic Research Foundation, 1000 North Oak Avenue, Marshfield, Wisconsin 54449 Bickol N. Mukesh, PhD, Biomedical Informatics Research Center, Marshfield Clinic Research Foundation, 1000 North Oak Avenue, Marshfield, Wisconsin 54449. Current affiliation: Alcon Laboratories, Inc., 6201 South Freeway, Fort Worth, TX 76134 Reprint Requests: Adedayo A. Onitilo, MD, MSCR, FACP, Marshfield Clinic Weston Center, 3501 Cranberry Boulevard, Weston, WI 54476, Tel: 715-393-1400, Fax: 715-393-1399, Email: onitilo.adedayo{at}marshfieldclinic.org
Flexible call admission control with preemption in LTE networks (2016)

This paper introduces a new call admission control (CAC) mechanism for Long Term Evolution (LTE) networks supporting multimedia services with different classes of traffic. Our CAC mechanism classifies calls into real time and non-real time users, then estimates the channel quality based upon the received signal strength (RSS) value, and finally identifies the call as either new call (NC) or handoff call (HC) request before performing admission control decision. We also use a simple preemption technique in order to allocate the resources to high priority bearer requests. We show through extensive simulation analysis that our CAC mechanism provides high number of accepted users with higher priorities while providing high system throughput.
Diagnosis of congenital infections in premature, low-birthweight newborns with intrauterine growth restriction caused by cytomegalovirus (CMV), herpes simplex virus (HSV), Parvo-B 19, and Zika virus: a systematic review (2022)

Newborn characteristics associated with CMV congenital infections may direct investigations towards these patients with a higher probability of infection. However, as data are controversial, studies concerning screening of infection are important to define recommendations of diagnosis.
A Comparison of the Dynamic Force Transmitting Properties of Subchondral Bone and Articular Cartilage (1970)

Compression tests on plugs of bovine articular cartilage and of subchondral bone demonstrated that both are capable of deforming under pressure and thus attenuating peak dynamic forces applied to the plugs. Although cancellous bone is approximately ten times stiffer than articular cartilage per unit of thickness, subchondral bone in vivo is considerably thicker and would, therefore, seem capable of contributing to dynamic force attenuation as much as the cartilage does or more. Under physiological loads and loading rates, a film of synovial fluid on the cartilage added nothing to the ability of cartilage plugs to attenuate peak dynamic force; however, at very low load rates cartilage plugs coated with synovial fluid were consistently stiffer than specimens coated with veronate buffer. It is highly likely, from the evidence presented, that alterations in the quality of the subchondral bone could have a profound effect on the ability of a subchondral bone-articular cartilage system to withstand compressive dynamic forces.
Proof of concept: Machine learning based filling level estimation for bulk solid silos (2018)

On construction work, the constant availability of the necessary bulk materials like concrete, plaster and screed is essential but today not given for the continuous work. Especially the use of mobile bulk solids silos seems to have significant potential to avoid downtimes on construction work and thus to increase the efficiency of the project. The basis for this is the robust and continuous knowledge about the filling level of the bulk solid silo. In this paper, an innovative acoustic sensor concept for fill level estimation in bulk solid silos using knocking signals will be introduced. To prove feasibility, initial trials will be performed atfilled and emptied test silos, recording the resulting sound in order to show a correlation between the filling level and the acoustic impulse response. Since the correlation between some data can also be spurious, the causality will be shown with a mathematical toy model, whereby the mathematical analysis is based on the shell theory. Furthermore a suitable Machine Learning method shall be used to use the different data pattern order to classify different filling levels. Finally, further actions of the ongoing research project, regarding the transfer learning capability of Machine Learning will be discussed.
Comparative Polyphenolic Content and Antioxidant Activities of Some Wild and Cultivated Blueberries from Romania (2011)

Two wild and three cultivated blueberry varieties (‘Elliot’, ‘Bluecrop’ and ‘Duke’) from Romania were analyzed comparatively in order to determine the total polyphenols, total anthocyanins, total flavonoids content and measuring the antioxidant activity using three different single electron transfer-based assays, Trolox equivalent antioxidant capacity (ABTS), ferric reducing ability (FRAP), 2,2-diphenylpicrylhydrazil radical scavenging capacity (DPPH) and one hydrogen atom transfer-assay, oxygen radical absorbance capacity (ORAC). Total polyphenols content ranged from 424.84 - 819.12 mg GAE/100 g FW, total flavonoids ranged from 84.33-112.5 mg QE /100 g FW and total anthocyanins ranged from 100.58-300.02 C3GE/100g FW. The anthocyanins were separated and quantified using RP-HPLC-DAD. In Vaccinium myrtillus, petunidin-3-glucoside and delphinidin-3-glucoside have the highest contribution to the anthocyanin content while in Vaccinium corymbosum, peonidin-3-galactoside represent the major anthocyanin. Except for ORAC assay (r=0.765), all antioxidant activity values obtained were highly correlated with total polyphenol content (0.923≤ r ≤0.986). Wild blueberries had higher total polyphenols content and also antioxidant activity compared with cultivated ones.
Correlation of computed finite element stresses to bone density after remodeling around cementless femoral implants. (1994)

Fundamental to the development of a durable, uncemented femoral component is an understanding of the remodeling process that goes on after implantation. Predicting the bone remodeling that results from the use of a given hip implant would facilitate the design of a prosthesis that would optimize bone adaptation. This report combines the results of finite element stress analysis of the AML prosthesis implanted in vitro into a proximal femur with quantitative bone mineral density measured in vivo in the medial and lateral aspects of human femora at periods after implantation. Unimplanted femora were also analyzed for comparison purposes. Bone density measurements were obtained using dual energy x-ray absorptiometry. Absolute values of the maximum principal stress and maximum shear stress calculated in the femur at the time of implantation accurately predict bone density resulting from remodeling caused by the prosthesis. The calculated initial strain was not found to correlate with resultant bone density. These findings suggest that the results of stress analyses using three dimensional models of femora implanted in vitro can predict bone remodeling around prostheses and may be used to quantitate appropriate design criteria for total hip replacements.
High-fidelity superconducting quantum processors via laser-annealing of transmon qubits (2020)

Scaling the number of qubits while maintaining high-fidelity quantum gates remains a key challenge for quantum computing. Presently, superconducting quantum processors with >50-qubits are actively available. For such systems, fixed-frequency transmons are attractive due to their long coherence and noise immunity. However, scaling fixed-frequency architectures proves challenging due to precise relative frequency requirements. Here we employ laser annealing to selectively tune transmon qubits into desired frequency patterns. Statistics over hundreds of annealed qubits demonstrate an empirical tuning precision of 18.5 MHz, with no measurable impact on qubit coherence. We quantify gate error statistics on a tuned 65-qubit processor, with median two-qubit gate fidelity of 98.7%. Baseline tuning statistics yield a frequency-equivalent resistance precision of 4.7 MHz, sufficient for high-yield scaling beyond 1000-qubit levels. Moving forward, we anticipate selective laser annealing to play a central role in scaling fixed-frequency architectures.
The South Pole Telescope (2004)

A new 10 meter diameter telescope is being constructed for deployment at the NSF South Pole research station. The telescope is designed for conducting large-area millimeter and sub-millimeter wave surveys of faint, low contrast emission, as required to map primary and secondary anisotropies in the cosmic microwave background. To achieve the required sensitivity and resolution, the telescope design employs an off-axis primary with a 10 meter diameter clear aperture. The full aperture and the associated optics will have a combined surface accuracy of better than 20 microns rms to allow precision operation in the submillimeter atmospheric windows. The telescope will be surrounded with a large reflecting ground screen to reduce sensitivity to thermal emission from the ground and local interference. The optics of the telescope will support a degree field of view at 2mm wavelength and will feed a new 1000-element micro-lithographed planar bolometric array with superconducting transition-edge sensors and frequency-multiplexed readouts. The first key project will be to conduct a survey over &dbigwig;4000 degrees for galaxy clusters using the Sunyaev-Zel'dovich Effect. This survey should find many thousands of clusters with a mass selection criteria that is remarkably uniform with redshift. Armed with redshifts obtained from optical and infrared follow-up observations, it is expected that the survey will enable significant constraints to be placed on the equation of state of the dark energy.
Design of a novel finger haptic interface for contact and orientation display (2010)

A new portable device for haptic interaction with virtual environments is presented. It is a lightweight interface for the fingertips, designed for providing cutaneous feedback and displaying the contact - non contact transition in highly immersive virtual environments. In this paper the kinematics, the mechanical design and the control system are described. The device has been mounted on a kinesthetic haptic interface which tracks its position: the overall system can provide both cutaneous and kinesthetic feedback. Finally the performance of the portable device in a simple task of shape exploration has been evaluated and compared to a kinesthetic haptic interface.