gebhart/patrepeval huggingface dataset:
How dark the sky: the JWST backgrounds (2022)

We describe the sources of stray light and thermal background that affect JWST observations, report actual backgrounds as measured from commissioning and early-science observations, compare these background levels to prelaunch predictions, estimate the impact of the backgrounds on science performance, and explore how the backgrounds probe the achieved configuration of the deployed observatory. We find that for almost all applications, the observatory is limited by the irreducible astrophysical backgrounds, rather than scattered stray light and thermal self-emission, for all wavelengths lambda &lt; 12.5 micron, thus meeting the level 1 requirement. This result was not assured given the open architecture and thermal challenges of JWST, and it is the result of meticulous attention to stray light and thermal issues in the design, construction, integration, and test phases. From background considerations alone, JWST will require less integration time in the near-infrared compared to a system that just met the stray-light requirements; as such, JWST will be even more powerful than expected for deep imaging at 1-5 micron. In the mid-infrared, the measured thermal backgrounds closely match prelaunch predictions. The background near 10 micron is slightly higher than predicted before launch, but the impact on observations is mitigated by the excellent throughput of MIRI, such that instrument sensitivity will be as good as expected prelaunch. These measured background levels are fully compatible with JWST's science goals and the Cycle 1 science program currently underway.
A design and implementation of 32-paths parallel 256-point FFT/IFFT for optical OFDM systems (2016)

This paper presents the design and implementation of thirty-two paths parallel FFT/IFFT for optical OFDM systems. Employing OFDM over high speed optical transmission systems requires large hardware resources due to computational-intensive operations such as full-parallel FFT implementation. The proposed 256-point IFFT/FFT adopts 32-paths parallel architecture with mixed radix-23 and radix-25 algorithm to reduce large number of complex multipliers. With this architecture, 256 full parallel data signals can be divided into eight sequential groups. Each group, composed of 32 parallel signals, is pipeline-processed. As a result, the hardware resources for full parallel 256-point FFT operation can be reduced to as much as those of 32-point FFT resource plus 32-path 8-point single-path delay feedback (SDF). The proposed FFT architecture is implemented with field programmable gate array and integrated in 12 Gbps, 64-QAM encoded real-time optical OFDM system. The implementation result shows that an 86% complex multiplier reduction can be achieved in comparison with full parallel architecture. The attained error vector magnitude (EVM) is approximately up to −32 dB for 64-QAM OFDM signals.
A disposable device for patient‐controlled analgesia with fentanyl (1989)

A disposable nonelectronic patient-controlled analgesia device was used to deliver fentanyl after upper abdominal surgery. Pain relief was satisfactory and plasma fentanyl concentrations were similar to those obtained by other workers who used electronic patient-controlled analgesia devices.
Induced Differentiation of U937 Cells by 1,25-dihydroxyvitamin D3 Involves Cell Cycle Arrest in G1 That Is Preceded by a Transient Proliferative Burst and an Increase in Cyclin Expression (1999)

The hormonal form of vitamin D, 1,25-dihydroxyvitamin D3 [1, 25(OH)2D3], is a potent inhibitor of cellular proliferation as well as an inducer of differentiation of myeloid leukemic cells to macrophages. We have previously reported that a number of genes are upregulated by 1,25(OH)2D3 during myeloid differentiation, including the cyclin-dependent kinase (CDK) inhibitors p21, p27, 15, and p18, suggesting that cell cycle arrest and differentiation are tightly linked processes. We further explore here the relationship between growth inhibition and differentiation. We report that, upon 1, 25(OH)2D3 treatment, U937 cells exhibited an early proliferative burst followed by growth inhibition and subsequent differentiation. Although CDK levels remain constant throughout, this transient increase in proliferation was accompanied by increases in cyclin A, D1, and E protein levels. p21 and p27 levels were also elevated during both the proliferative burst and subsequent inhibition of cell growth. Ectopic overexpression of p21 and/or p27 in U937 cells, in the absence of hormone, resulted in an induction of the expression of monocyte/macrophage-specific markers, whereas overexpression of p15 and p18 had no effect, suggesting that a subset of CDK inhibitors are important for both growth arrest and differentiation and that an early increase in proliferation is somehow a prerequisite for subsequent differentiation. However, no such biphasic behavior was detected in cells that are growth inhibited by 1,25(OH)2D3 but do not differentiate, such as MCF-7 cells. Taken together, these results indicate that both growth stimulation and subsequent inhibition precede differentiation and involve induction of both cyclins and p21 and p27, whereas cell cycle arrest of differentiated cells can be achieved simply by elevations in CDK inhibitors.
Unsteady fan blade pressure and acoustic radiation from a JT15D-1 turbofan engine at simulated forward speed (1981)

Tests have been conducted on a JT15D-1 turbofan engine both statically and at simulated forward speed in the Ames 12 x 24 Meter Wind Tunnel. Both far-field acoustic data and unsteady pressure data from transducers mounted on the fan blades were acquired. Results showed a sound power reduction of about 10 dB in the far-field acoustic levels with simulated forward speed over those measured without forward speed. Blade mounted transducer results showed rotor-turbulence interaction dominated the noise field at very low speeds while an interaction between the rotor and internal struts dominated at higher speeds. Results are presented to show the effects of varying engine rpm, changing the angle-of-attack of the engine inlet to tunnel flow and mounting an aircraft wing to simulate an installation condition on an actual aircraft.
Cytogenetic and molecular studies of the Philadelphia translocation t(9;22) observed in a patient with myelodysplastic syndrome. (1989)

We report here the case of a patient with refractory anemia with excess of blasts (RAEB) which evolved into RAEB in transformation. The standard Philadelphia (Ph) chromosome was found by cytogenetic study at diagnosis and during evolution. Southern blot analysis showed breakpoint cluster region (bcr) rearrangement as observed in chronic myelogenous leukemia (CML).
A fast method of reconstructing high-resolution panoramic stills from MPEG-compressed video (2002)

Creating high quality still pictures from video presents a challenging problem due to the low spatial resolution of most video signals. Many algorithms have been proposed in the literature that utilize multiple video frames to increase spatial resolution. These algorithms depend on two critical assumptions: first, that the scene does not change significantly in the temporal vicinity of the frame of interest, and second that the motion estimation between video frames is extremely accurate. Noting that panoramic views are not only visually pleasing, but also fit the aforementioned assumptions, we propose the use of a scene change detection algorithm to locate scenes containing mainly pan/tilt types of motion. Since many digital video sequences are compressed using MPEG, it is desirable to perform all computations with minimal decompression. To this end, we also propose methods to locate pans from MPEG-compressed video. Once the pan segments are located, a number of highly accurate motion estimation methods can be successfully applied to the video segment. Given the resulting accurate motion, there exist various methods of attacking the resolution enhancement problem and creating a panoramic still image. These, for the most part, are computationally expensive. Therefore, we propose a fast method of obtaining enhanced resolution panoramas from the lower resolution video signal.
Combining functional magnetic resonance imaging with mouse genomics: new options in pain research (2009)

This functional magnetic imaging study investigated the functional implications of genetic modification and pharmacological intervention on cerebral processing of heat-induced nociception in mice. Comparing dynorphin-overexpressing dream(-/-) with wild-type mice, smaller activated cortical and limbic brain structure sizes could be observed. Moreover, significantly reduced blood oxygenation level-dependent signal amplitudes were found in pain-related brain structures: sensory input, thalamic regions, sensory cortex, limbic system, basal ganglia, hypothalamus and periaqueductal grey. Administration of the specific kappa-opioid-receptor antagonist nor-binaltorphimine to dream(-/-) mice reversed this reduction to wild-type level in the same brain structures. These results show that blood oxygenation level-dependent functional magnetic imaging in the pain system of (transgenic) mice is feasible. Genetic modifications and pharmacological interventions modify brain responses in a structure-specific manner.
ON SOME FIXED POINT THEOREMS IN 2–UNIFORM SPACES (2016)

In this paper, some fixed point theorems in 2–uniform spaces are established and contraction type mappings in 2 – uniform spaces are introduced.
An Hierarchical Architecture for Docking Autonomous Surface Vehicles (2019)

Autonomous Surface Vehicles (ASVs) provide the ideal platform to further explore the many opportunities in the cargo shipping industry, by making it more profitable and safer. This paper presents an architecture for the autonomous docking operation, formed by two stages: a maneuver module and, a situational awareness system to detect a mooring facility where an ASV can safely dock. Information retrieved from a 3D LIDAR, IMU and GPS are combined to extract the geometric features of the floating platform and to estimate the relative positioning and orientation of the moor to the ASV. Then, the maneuver module plans a trajectory to a specific position and guarantees that the ASV will not collide with the mooring facility. The approach presented in this paper was validated in distinct environmental and weather conditions such as tidal waves and wind. The results demonstrate the ability of the proposed architecture for detecting the docking platform and safely conduct the navigation towards it, achieving errors up to 0.107 m in position and 6.S8°in orientation.
Photoproperties Of Naphthalocyanines (1989)

Naphthalocyanines are a new class of photodynamic sensitizers that strongly absorb far red light. Using silicon as the central metal atom in the tetrapyrrole ring provides two ligand sites that are perpendicular to the ring plane. These axial sites are thereby useful for synthetically attaching organic residues designed to convey specific solubility properties. Thus by attaching polyethylene glycol units, the resulting molecules show significant water solubility; attaching branched alkyl chains conveys useful lipid solubility.
Effect of number of plants per plant hole and of runner plant crown diameter on strawberry yield and fruit mass (1999)

Runner plants of three strawberry cultivars, ‘Selekta’, ‘Tiobelle’ and ‘Tioga’, each with three crown diameter classes, were planted using one, two or three runner plants per planting hole. This was done in order to determine whether yield reductions stemming from the use of small runner plants (crown diameter <5 mm) could be prevented by planting more than one small runner plant per hole. Overall yields increased as the number of plants per hole increased for all three crown diameter classes. Crown diameter> 10 mm and crown diameter 5–10 mm runners of ‘Selekta’ and ‘Tiobelle’ gave similar yields. ‘Tioga’ crown diameter <10 mm runner plants yielded better than crown diameter <5 mm plants. Increasing the number of plants per hole resulted in a mean fruit size decrease of 8.9. These results indicate that the use of more than one runner plant of small crown diameter per planting hole may result in improved yields, but not economic returns with existing price structure of runner plants. Nurseries should, therefore, consider selling small runner plants at reduced prices in order to encourage this potentially mutually beneficial practice.
On Recommending Opportunistic Rides (2017)

Research on social and mobile technologies recently provided tools to collect and mine massive amounts of mobility data. Ride sharing is one of the most prominent applications in this area. While a number of research and commercial initiatives already proposed solutions for long-distance journeys, the opportunities provided by modern pervasive systems can be used to promote local, daily ride sharing within the city. We present a set of algorithms to analyze urban mobility traces and to recognize matching rides along similar routes. These rides are amenable for ride sharing recommendations. We validate the proposed methodology using data provided by a large Italian telecom operator. Assuming the full set of considered users are willing to accept 1-km detours, experimental results on two large cities show that more than 60% of trips could be saved. These results can be used to evaluate the potential of a ride sharing system before its actual deployment and to actually support an opportunistic ride sharing recommender system.
Detection of mRNA transcripts for retinoic acid, vitamin D3, and thyroid hormone (c/erb/A) nuclear receptors in human skin using reverse transcription and polymerase chain reaction. (1993)

Differentiation of keratinocytes involves both non-genomic and genomic events. The genomic effects are regulated by ligand-dependent transcription factors, e.g. the steroid/thyroid super-family of nuclear receptors. In the present study we examined mRNA expression of receptors for retinoic acid, thyroid hormone, and vitamin D3 in normal human skin and cultured keratinocytes using reverse transcription coupled to the polymerase chain reaction. The vitamin D3 receptor and the retinoic acid receptor (RAR) gamma together with the more distantly related RXR alpha were amplified extensively in skin and cultured keratinocytes. RAR alpha was amplified at a lower level, and RAR beta was almost undetectable. The thyroid hormone receptors alpha 1 and beta 1 were weakly amplified, but to comparable levels. Because receptors for retinoic acid, thyroid hormones, and vitamin D3 are all expressed in human epidermis differentiation of keratinocytes is probably regulated at transcriptional level by these molecules. It remains to be seen whether alterations in the expression of the nuclear receptors occur in certain skin disorders.
Steel clad plates hydrogen degradation evaluation using ultrasonic defectoscopy method (2009)

Address: Prof. Krzysztof J. KURZYDŁOWSKI, Maciej SZWED, MSc. Eng., Krystyna LUBLIŃSKA, Ph.D. Eng., Michal GLOC, M.Sc. Eng., Warsaw University of Technology, Faculty of Materials Science, ul. Woloska, 141 02-507 Warszawa, Wojciech MANAJ, Ph.D. Eng., Materials Engineers Group Sp. z o.o., ul. Woloska 141, 02-507 Warszawa STEEL CLAD PLATES HYDROGEN DEGRADATION EVALUATION USING ULTRASONIC DEFECTOSCOPY METHOD
A randomized controlled trial of telephone management of suspected urinary tract infections in women. (2001)

Short-term outcomes of managing suspected UTIs by telephone appear to be comparable with usual office care.
EFFECTS OF INLET SURFACE ROUGHNESS, TEXTURE, AND NOZZLE MATERIAL ON CAVITATION (2006)

The aim of this study is to experimentally investigate the effect of inlet surface roughness, texture, and nozzle material on internal flow. Study results show that inlet surface roughness can affect the occurrence of cavitation much more than it affects hydraulic flip. Also, dimensionless driving pressures ranging from 1.28 to 1.48, correspond to the occurrence of cavitation, and ranges of 1.48 to 1.97, correspond to the occurrence of hydraulic flip in an acrylic nozzle. The variation of dimensionless driving pressures corresponding to the occurrence of cavitation caused by changing surface roughness is much greater than that of hydraulic flip, unless the roughness/hole diameter ratio rises to 0.0047. In an acrylic nozzle with a roughness/hole diameter ratio of 0.0115, the phenomenon of hydraulic flip becomes negligible. Increasing the diameter of the nozzle hole can reduce the effect of roughness on cavitation and the occurrence of hydraulic flip. The more adhesion between the wall of the nozzle and water molecules, the less likely is the occurrence of hydraulic flip, and there is a critical value of the dimensionless of the contact angle for the occurrence of hydraulic flip between 1.19 and 1.24 when the ratio of the roughness-to-hole diameter is ∼ 0.005. Burrs on the inside wall of the nozzle will eliminate hydraulic flip, even though cavitation exists within the nozzle. Cavitation is not only affected by coupling the ratio of the roughness-to-hole diameter and competition for the contractive and adhesive forces represented, it can also be affected by the surface texture of the nozzle, such as the occurrence of burrs.
X-ray emission produced by hot electrons from fs-laser produced plasma— diagnostic and application (1999)

High intensity fs-laser pulses can deliver focused intensities in the region of 10 16 –10 19 W/cm 2 . If the laser pulse is focused onto a solid or gaseous material, a plasma is created. The electrons, as well as the ions are accelerated in the strong laser field up to energies in the range of keV to several MeV. The interaction of the high energy particles with cold material, that is, the solid target yield of intense X-ray emission, K -shell—as well as bremsstrahlung-radiation. The K -shell emission from layered targets is a useful indicator of the production efficiency, energy distribution, and transport of hot electrons produced in fs-laser plasmas. For the diagnosis of laser plasma interaction and its application as an intense X-ray source, the spatial, temporal and spectral distribution of K -shell X rays is of fundamental importance. Focusing crystal spectrographs can be used to obtain a single shot X-ray spectra of laser plasmas produced by table top fs-lasers. With a spatial- and spectral-focusing spectrograph based on a toroidally bent crystal, the emission region of the hot plasma and K α-radiation can be determined. Recording the spectra online by a frontside illuminated charge-coupled device (CCD) allows alignment of the crystal spectrograph, as well as the laser beam focusing leading to different X-ray source sizes. Using a controlled fs-prepulse, an increase in K α radiation could be observed with the diagnostic. Measurements of calibrated high resolution spectra are compared with particle-in-cell (PIC) calculations of the laser absorption and hot electron production postprocessed by a Monte–Carlo (MC) transport model of electron stopping and K α X-ray generation.
What is the mechanism of irregular pacing spikes? Pacing failure, sensing failure, or something else? A case report (2020)

We experienced a rare case of dizziness and presyncope with confused pacing spikes. Physicians should be aware of the unexpected interactions that are possible with devices with automatic mode changes.
Spectroscopic measurements of hydrogen dissociation degree and H- production in resonant antenna-generated plasmas (2016)

A new generation of Neutral Beam systems will be required in future fusion reactors, such
as DEMO, able to deliver high power (up to 150 MW) with high neutral energy (>1 MeV).
Negative ion beams can attain this performance, resulting in a strong research focus on negative
ion production from either surface or volumetric plasma sources.
A novel helicon plasma source, employing on a resonant birdcage network antenna, is currently
under study at the Swiss Plasma Center (SPC), before installation on the Cybele negative
ion source [1] at CEA-IRFM. The source delivers up to 10 kW at 13.56 MHz, and was installed
on a linear (1.8 m length) Resonant Antenna Ion Device (RAID). Passive spectroscopic measurements
of the Ha, Hb and Hg Balmer lines and of all the diagonal Fulcher-a bands were performed
with a sensitive f/2 spectrometer. Multiple viewing lines setup and an absolute intensity
calibration were used to determine the plasma radiance profile, with a space resolution < 3 mm.
A minimum Fisher regularisation algorithm is then applied to calculate the absolute emissivity
profile for each emission line, in cylindrical symmetry as experimentally observed. An error
estimate of the Abel-inverted profiles was performed using a Monte Carlo approach. Finally, an
RF-compensated Langmuir probe measured the electron temperature and density profiles. The
measured absolute line emissivities, electron density and temperature are interpreted using the
collisional-radiative code YACORA [2] which estimates the dissociation degree and the distribution
of the different atomic and molecular species, including the density of negative ions. In
this paper, the results of a power scan up to 5 kW in conditions satisfying DEMO requirements,
i.e. p 0:3 Pa and B 150 G, are shown.
A simulation study of a bedside cardiac PET imager (2005)

This paper presents the results of a simulation study on the imaging performance of a bedside cardiac PET system. The proposed system consists of two compact gamma cameras mounted on a mobile gantry. Key challenges presented by this imaging context include: detector positioning to obtain sufficient angular sampling, attenuation correction in the absence of transmission images, and control of image noise. The primary aim of this paper was to quantify the extent of reconstructed image artifacts that result from these effects under the anticipated imaging conditions. The simulation studies demonstrated that limited angle acquisition is the primary source of artifacts followed by attenuation effects. Image noise in this context was not a major factor in the reconstructed image quality. Image artifacts resulting in a nearly 50% variation in image intensity in isolated regions of the myocardium could be expected from this imaging system. Such artifacts render the detection of mild myocardial defects highly difficult; however, severe defects should still be detectable with this system, which can offer important diagnostic information for this patient population.
Electrochemical Behavior of Carbon Electrodes as a Key to Supercapacitor Optimization (2013)

The paper describes the electrochemical behavior of supercapacitor electrodes in both positive and negative&#13;\nranges. This study has become possible due to development of a special reference electrode, which is&#13;\nstable in aprotic electrolytes like, e.g., 1.3 M Et3MeNBF4 in acetonitrile. Three-electrode measurements&#13;\nhave enabled us to find the boundary potentials for various nanoporous carbon materials to be then used in&#13;\nthe supercapacitor technology. This article describes how the electrode size can be optimized to get the&#13;\nmaximum charge value in the double electric layer at the electrode-electrolyte interface. Besides, we illustrate&#13;\nhow the supercapacitor rated voltage can be increased up to 2.9 V as compared with the typical value&#13;\nof 2.7 V. This provides the 15 % increase in energy and power.\nWhen you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35501