gebhart/patrepeval huggingface dataset:
Predictive head tracking for virtual reality (2003)

In virtual reality (VR), head movement is tracked through inertial and optical sensors. Computation and communication times result in delays between measurements and updating of the new frame in the head mounted display(HMD). These delays result in problems, including motion sickness. We use recurrent and time delay neural networks to predict the head location and use it to calculate the new frame. A predictability analysis is used in designing the prediction system.
Thin-ridge Silicon-on-Insulator waveguides with directional control of lateral leakage radiation (2011)

In this paper, we propose a Silicon-On-Insulator waveguide structure which when excited with TM guided light emits controlled TE polarized radiation from one side of the structure only. The validity of the proposed structure is analyzed using eigenmode expansion and supermode techniques. It is shown that care must be taken to select the gap between the radiating elements such that both the phase and the amplitude of the radiating modes are maintained along the propagation direction to achieve the desired directional control of radiation. Steps toward practical demonstration of the proposed structure are identified.
The Development and Application of NMR Methodologies for the Study of Degradation in Complex Silicones (2013)

Abstract not provided
Effects of Zeaxanthin on Growth and Invasion of Human Uveal Melanoma in Nude Mouse Model (2015)

Uveal melanoma cells were inoculated into the choroid of nude mice and treated with or without intraocular injection of zeaxanthin. After 21 days, mice were sacrificed and the eyes enucleated. Histopathological analysis was performed in hematoxylin and eosin stained frozen sections. Melanoma developed rapidly in the control group (without treatment of zeaxanthin). Tumor-bearing eye mass and tumor mass in the control group were significantly greater than those in zeaxanthin treated group. Melanoma in the controlled eyes occupied a large part of the eye, was epithelioid in morphology, and was with numerous mitotic figures. Scleral perforation and extraocular extension were observed in half of the eyes. Melanomas in zeaxanthin treated eyes were significantly smaller with many necrosis and apoptosis areas and no extraocular extension could be found. Quantitative image analysis revealed that the tumor size was reduced by 56% in eyes treated with low dosages of zeaxanthin and 92% in eyes treatment with high dosages of zeaxanthin, as compared to the controls. This study demonstrated that zeaxanthin significantly inhibits the growth and invasion of human uveal melanoma in nude mice, suggesting that zeaxanthin may be a promising agent to be explored for the prevention and treatment of uveal melanoma.
Picosecond Laser Pulse Induced Phase Transformation in Sapphire (2012)

Picosecond laser-induced structural change in z-cut sapphire wafer were investigated through Raman spectroscopy and transmission electron microscopy. The broadening at 417 cm−1 and the presence of a new Raman peak near 420 cm−1 were observed.
Investigating the Influence of Reaction Conditions and the Properties of Ceria for the Valorisation of Glycerol (2019)

The reaction of aqueous glycerol over a series of ceria catalysts is investigated, to produce bio-renewable methanol. Product distributions were greatly influenced by the reaction temperature and catalyst contact time. Glycerol conversion of 21% was achieved for a 50 wt.% glycerol solution, over CeO2 (8 m2 g−1) at 320 °C. The carbon mass balance was &gt;99 % and the main product was hydroxyacetone. In contrast, at 440 °C the conversion and carbon mass balance were &gt;99.9 % and 76 % respectively. Acetaldehyde and methanol were the major products at this higher temperature, as both can be formed from hydroxyacetone. The space-time yield (STY) of methanol at 320 °C and 440 °C was 15.2 and 145 gMeOH kgcat−1 h−1 respectively. Fresh CeO2 was prepared and calcined at different temperatures, the textural properties were determined and their influence on the product distribution at iso-conversion and constant bed surface area was investigated. No obvious differences to the glycerol conversion or product selectivity were noted. Hence, we conclude that the surface area of the CeO2 does not appear to influence the reaction selectivity to methanol and other products formed from the conversion of glycerol.
Enhanced FPGA reliability through efficient run-time fault reconfiguration (2000)

The expanded use of field programmable gate arrays (FPGA) in remote, long life, and system-critical applications requires the development and implementation of effective, efficient FPGA fault-tolerance techniques. FPGA have inherent redundancy and in-the-field reconfiguration capabilities, thus providing alternatives to standard integrated circuit redundancy-based fault-recovery techniques. Runtime reliability can be enhanced by using such unique features. Recovery from permanent logic and interconnect faults without runtime computer-aided design (CAD) support can be efficiently performed with the use of fine-grained and physical design partitioning. Faults are localized to small partitioned blocks that have fixed interfaces to the surrounding portions of the design, and the affected blocks are reconfigured with previously generated, functionally equivalent block instances that do not use the faulty resources. This technique minimizes the post-fault-detection system downtime, while requiring little area overhead. Only the finely located faulty portions of the FPGA are removed from use. In addition, the end user need not have access to CAD tools, making the algorithm completely transparent to system users. This approach has been efficiently implemented on a diverse set of FPGA architectures. The algorithm's flexibility is also apparent from the variable emphases that can be placed on system reliability, area overhead, timing overhead, design effort, and system memory. Given user-defined emphases, the algorithm can be modified to specific application requirements. Experiments using random s-independent and s-correlated fault models reveal that the approach enhances system reliability, while minimizing area and timing overhead.
Zero-Shot Policy Transfer with Disentangled Task Representation of Meta-Reinforcement Learning (2023)

Humans are capable of abstracting various tasks as different combinations of multiple attributes. This perspective of compositionality is vital for human rapid learning and adaption since previous experiences from related tasks can be combined to generalize across novel compositional settings. In this work, we aim to achieve zero-shot policy generalization of Reinforcement Learning (RL) agents by leveraging the task compositionality. Our proposed method is a meta-RL algorithm with disentangled task representation, explicitly encoding different aspects of the tasks. Policy generalization is then performed by inferring unseen compositional task representations via the obtained disentanglement without extra exploration. The evaluation is conducted on three simulated tasks and a challenging real-world robotic insertion task. Experimental results demonstrate that our proposed method achieves policy generalization to unseen compositional tasks in a zero-shot manner.
Acoustic Noise and Vibration in Switched Reluctance Machines: A Comparative Study of 12/8 and 8/6 Topologies (2019)

Some of the major issues in the wider adoption of switched reluctance motors (SRMs) include torque ripple, vibration and acoustic noise. Three-phase and four-phase SRMs are among the most popular configurations in this family of machines, and both have a distinctive pattern of radial forces that uniquely impact vibration and acoustic noise behavior. This study presents a comparative analysis between a 12/8 and 8/6 SRMs. First, 2D electromagnetic analysis of the two motors are completed by using ANSYS Maxwell, which is used to calculate radial force. These models are further analyzed to establish the relation between radial magnetic force inducing resonant vibration with mode shapes of the stator. The machines have identical stator diameters and are tested in similar efficiency region at same output power level to compare acceleration and acoustic noise profiles and compared. Additionally, it implements a controller to maximize efficiency through firing angles optimization in both machines and analyzes its consequential effect on vibration and acoustic noise behavior for both machines.
Effect of Operating Frequency On Piezo-Based DC-DC Converter (2021)

International audience
The absolute kinetics of several reactions of substituted diphenylcarbenes (1986)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe absolute kinetics of several reactions of substituted diphenylcarbenesL. M. Hadel, V. M. Maloney, M. S. Platz, W. G. McGimpsey, and J. C. ScaianoCite this: J. Phys. Chem. 1986, 90, 11, 2488–2491Publication Date (Print):May 1, 1986Publication History Published online1 May 2002Published inissue 1 May 1986https://pubs.acs.org/doi/10.1021/j100402a044https://doi.org/10.1021/j100402a044research-articleACS PublicationsRequest reuse permissionsArticle Views134Altmetric-Citations36LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access options Get e-Alerts
EMI and microwave absorbing efficiency of polyaniline-functionalized reduced graphene oxide/γ-Fe2O3/epoxy nanocomposite (2020)

Polyaniline-decorated reduced graphene oxide/ferrite nanofiller (RGPF) prepared by the solution mixing method in three different ratios (1 : 3, 1 : 1 and 3 : 1) of polyaniline-decorated reduced graphene oxide and ferrite have been studied for microwave absorption properties in defence application. The polyaniline-decorated reduced graphene oxide/ferrite and neat ferrite nano-fillers have been used for the preparation of an epoxy nanocomposite (RGPFE) of 60 wt%. The distribution of the RGPF nanofiller in the epoxy matrix was analyzed by field emission scanning electron microscopy. Further, thermal gravimetric analyses revealed the excellent thermal stability of the nanocomposites. A vibrating sample magnetometer was employed to find out the magnetic behavior of the prepared nanocomposites. The complex permittivity and permeability were investigated to evaluate the principal properties in the frequency range from 2 to 18 GHz. These results show that an epoxy nanocomposite with 60 wt% RGPF filler in the ratio of 3 : 1 has maximum dielectric loss. Finally, these electromagnetic data were used to calculate the reflection loss of the epoxy nanocomposites, and showed good agreement between the calculated and measured data of these nanocomposites. The minimum reflection loss was observed as -10.26 dB in the X band with a thickness of 3.0 mm, and the bandwidth was 8.47 GHz for RL ≤-10 dB. On the basis of the above observations, these nanocomposites could be a good candidate for electromagnetic interference shielding (EMI) and microwave absorption applications.
A Modified Adjacent Pixel Intensity Difference Quantization Method for Face Recognition (2009)

We have proposed a very simple yet highly reliable face recognition algorithm using adjacent pixel intensity difference quantization (APIDQ) histogram previously. In this paper, we present a modified quantization method to improve recognition performance. After the intensity variation vectors for all the pixels in an image are calculated, each vector is quantized directly in (dIx, dIy) plane instead of radius-angle plane. By counting the number of elements in each quantized area in the (dIx, dIy) plane, a histogram can be created. This histogram, obtained by APIDQ for facial images, is utilized as a very effective personal feature. Experimental results show maximum average recognition rate of 97.2% for 400 images of 40 persons from the publicly available face database of AT & T Laboratories Cambridge.
Applying Abduction in Semantic Web Service Composition (2007)

The semantic web promises to bring automation to the areas of web service selection, discovery, composition, invocation. In this paper we introduce a means of facilitating automation of web service composition by exploiting semantic matchmaking between web service parameters (i.e., outputs and inputs) to enable their connections and interactions. The idea is that matchmaking functions are key components to find semantic compatibilities among independently web service descriptions. To this end, our approach extends existing methods (exact, plug-in, subsume, intersection and fail) with concept abduction to provide explanations of misconnections between web services. From this we generate web service compositions that realize the goal, discovering and satisfying semantic connections between Web services. Moreover a process of relaxing the hard constraints is introduced in case the composition process failed. Our system is implemented and interacting with web services dedicated on a France Telecom scenario.
Pharmacological characterisation of novel, cell active, inhibitors of Poly(ADP-ribose glycohydrolase (PARG) (2014)

Poly(ADP-ribose) glycohydrolase (PARG) is the only enzyme known to catalyse hydrolysis of the O-glycosidic linkages of ADP-ribose polymers, thereby reversing the effects of poly(ADP-ribose) polymerases. Total PARG deficiency leads to cell death whilst PARG depletion, using RNAi, leads to pleiotropic effects such as PAR chain persistence, progression of single- to double-strand DNA lesions and NAD+ depletion.Whilst efforts to develop small molecule inhibitors of PARG activity have generally been hampered by poor physiochemical properties, off-target pharmacology and a lack of cell permeability, we have now developed a series of PARG inhibitors which have proved to be useful biological tool compounds. Displaying selective activity in both biochemical and, more importantly, cellular assays of PARG function, these derivatives have allowed an exploration of the phenotypes resulting from reversible, pharmacological PARG inhibition.
GMTI Tracking via the Gaussian Mixture Cardinalized Probability Hypothesis Density Filter (2010)

The cardinalized probability hypothesis density (CPHD) filter is a recursive Bayesian algorithm for estimating multiple target states with a varying target number in clutter. In particular the Gaussian mixture variant (GMCPHD), which provides closed-form prediction and update equations for the filter in the case of linear Gaussian systems, is a candidate for real time multi-target tracking. The following three issues are addressed. First we show the equivalence between the GMCPHD filter and the standard multi hypothesis tracker (MHT) in the case of a single target. Second by using a Gaussian sum approach, we extend the GMCPHD filter to incorporate digital road maps for road constrained targets. The use of such external information leads to more precise tracks and faster and more reliable target number estimates. Third we model the effect of Doppler blindness by a target state-dependent detection probability, which leads to a more stable target-number estimation in the case of low-Doppler targets.
The Micro-Precision Interferometer Testbed Instrument Design (1994)

The Micro-Precision Interferometer Testbed is essentially a space-based Michelson interferometer suspended in a ground-based laboratory. The purpose of the testbed is to serve as a proving ground for technologies needed for future space-based missions requiring low-vibration environments. A layered control architecture, utilizing isolation, structural control, and active optical control technologies, allows the system to achieve its vibration attenuation goals. This paper focuses primarily on the interferometer instrument design for the testbed and the systems-level tradeoffs between the instrument and other systems due to the fact that the interferometer is on a large, lightly damped, flexible structure rather than on the ground. The testbed is designed to be a fully functioning interferometer spacecraft and makes use of flight-like hardware where possible, including an external star simulator, an attitude control system, fringe detection and tracking systems, delay lines, pointing control, laser metrology systems, and computers and electronic subsystems. The engineering decisions that led to the current instrument configuration are presented and explained.
The Art of Breaking and Making: How Being Curious and Confident (Even If Unwarranted) Led to Amazing Opportunities for Almost 60 Years (2016)

As a kid I was considered somewhat of a terror. But not in the usual way you would imagine for a little boy. Outwardly I was polite, mild mannered, and rarely fought with anyone. But on the inside, I was hyper-curious. I had to know how everything worked. What's inside that? What would happen if I did this? These experiments often used force, which broke most of the objects I explored. Some of the items were mine, and that was ok since I was able to see inside and could still play with parts and the box the toy came in. Unfortunately, some of the items belonged to others, and they didn't appreciate their toys being broken, which led to my reputation.
+20 dBm output power balanced optical amplifier module (1993)

A novel and efficient balanced optical amplifier (BOA) configuration is proposed. In this technique the four ports of an erbium fibre multiplexer are used to combine signal and pump in a symmetric fashion, providing dual pumping while preventing pump crosstalk. The use of the BOA design in a 980 nm pumped erbium doped fibre power booster packaged module is demonstrated. Furthermore, tests of a +20 dBm output BOA as a power amplifier in a 5Gbit/s transmission experiment result in successful bit error rate measurements through 86 km of nondispersion shifted fibre.
Recombination Signal Sequence Binding Protein Jκ Is Constitutively Bound to the NF-κB Site of the Interleukin-6 Promoter and Acts as a Negative Regulatory Factor (1997)

Analysis by electrophoretic mobility shift assays (EMSA) of the different proteins associated with the kappaB sequence of the interleukin-6 (IL-6) promoter (IL6-kappaB) allowed us to detect a specific complex formed with the recombination signal sequence binding protein Jkappa (RBP-Jkappa). Single-base exchanges within the oligonucleotide sequence defined the critical base pairs involved in the interaction between RBP-Jkappa and the IL6-kappaB motif. Binding analysis suggests that the amount of RBP-Jkappa protein present in the nucleus is severalfold higher than the total amount of inducible NF-kappaB complexes but that the latter bind DNA with a 10-fold-higher affinity. A reporter gene study was performed to determine the functional implication of this binding; we found that the constitutive occupancy of the IL6-kappaB site by the RBP-Jkappa protein was responsible for the low basal levels of IL-6 promoter activity in L929sA fibrosarcoma cells and that RBP-Jkappa partially blocked access of NF-kappaB complexes to the IL-6 promoter. We propose that such a mechanism could be involved in the constitutive repression of the IL-6 gene under normal physiological conditions.
Ge/SiGe Quantum-well Micro-bridges with High Tensile Strain (2017)

Highly tensile-strained Ge/SiGe MQW structures on Si substrates are formed by introducing micro-bridge structures. Lattice matching and strain of epitaxial structures are analyzed by XRD. Large strain induced by micro-bridges is confirmed with Raman spectroscopy.
Doprinos izučavanju povezanosti ekonomskih sloboda i ljudskog razvoja (2018)

Cilj ovog rada je prikazati koje su to zemlje koje imaju najvise stope Indeksa ljudskog razvoja i BDP per capita te testirati korelaciju Indeksa ekon
Bronchoscopically Delivered Thermal Vapor Ablation of Human Lung Lesions (2018)

We conclude that BTVA may have a future role in the treatment of lung cancer and should be investigated further in clinical trials.
Effects of CO 2 Laser Irradiation on Treatment of Hypersensitive Dental Necks: Results of an in Vitro Study (1995)

Various methods for treatment of hypersensitive dental necks have been developed during the past few decades. The exposure of dentinal tubules to chemical, thermal, and mechanical influences in the oral environment is considered the cause of dentin hypersensitivity. Stimuli can be transmitted as far as the sensitive nerve endings by dentinal tubules. As a result treatment methods are based on the attempt to seal exposed dentinal tubules permanently. The main sealing materials are fluoride preparations, strontium chloride, and hydroxyapatite. They must be applied periodically to achieve permanent freedom from pain. A new method to treat hypersensitive dental necks is laser irradiation. In our in vitro study, we treated extracted human teeth with a CO2 laser in the cervical region. The necks of these teeth had been exposed prior to extraction thereby causing dentin hypersensitivity. Scanning electron microscopy after treatment revealed almost complete closure of the dentinal tubules. We applied a thin layer of stannous fluoride gel to 10 teeth prior to laser treatment. Electron probe microanalysis (EPMA) revealed that tin was present within the sealed tubular openings. Subsequent temperature measurements showed that laser treatment caused a maximum increase in temperature within the pulp cavity by 2.5°C.
The Power of Minds at Work: Organizational Intelligence in Action (2002)

It's a fact: A group of intelligent people, when combined in an organization, will often yield collective stupidity! We've all seen intelligence blocked, squandered, and misused in the business world - but now writer and thinker Karl Albrecht introduces the concept of OI (Organizational Intelligence) and shows how an enterprise can mobilize and focus its collective brain power.
Special Section on Internet Imaging (2002)

The <i>Journal of Electronic Imaging</i> (JEI), copublished bimonthly with the Society for Imaging Science and Technology, publishes peer-reviewed papers that cover research and applications in all areas of electronic imaging science and technology.
Inhibition of Herpes Simplex Virus Type 1 Infection by Cationic β-Peptides (2008)

Previously, it was shown that cationic alpha-peptides derived from the human immunodeficiency virus TAT protein transduction domain blocked herpes simplex virus type 1 (HSV-1) entry. We now show that cationic oligomers of beta-amino acids ("beta-peptides") inhibit HSV-1 infection. Among three cationic beta-peptides tested, the most effective inhibition was observed for the one with a strong propensity to adopt a helical conformation in which cationic and hydrophobic residues are segregated from one another ("globally amphiphilic helix"). The antiviral effect was not cell type specific. Inhibition of virus infection by the beta-peptides occurred at the postattachment penetration step, with a 50% effective concentration of 3 muM for the most-effective beta-peptide. The beta-peptides did not inactivate virions in solution, nor did they induce resistance to infection when cells were pretreated with the beta-peptides. The beta-peptides showed little if any toxicity toward Vero cells. These results raise the possibility that cationic beta-peptides may be useful antiviral agents for HSV-1 and demonstrate the potential of beta-peptides as novel antiviral drugs.