gebhart/patrepeval huggingface dataset:
Strain-tunable optical valves at T-junction waveguides in photonic crystals (2003)

We propose to use tunable splitting of a degenerate photon state inside the band gap of a photonic crystal for the design of active tunable photonic crystal circuits. The effect we exploit is analogous to the static Jahn-Teller effect in solids. We demonstrate that effect is tunable by the symmetry and magnitude of the lattice distortion. Using this effect, we design an optical valve that controls the resonant coupling of the photon modes at the corner of a T-junction waveguide structure.
SHEAR RATE HAS GREATER INFLUENCE ON CEMENT SLURRY PROPERTIES THAN TOTAL MIXING ENERGY (1996)

New laboratory and field-scale research reveals the shear rate that a mixing system provides to a cement slurry has a greater influence than total mixing energy on slurry properties. Because field mixing equipment operates at significantly lower shear rates than typical laboratory equipment, slurry properties in the field frequently do not match the laboratory values, which can lead to a variety of cement-job problems. Slurries designed under high-shear laboratory mixing conditions can result in the wrong combinations of additives or the wrong additive proportions. A series of full-scale tests with field equipment was completed for the sole purpose of investigating the mixing energy issue. The data reveal two key points: little correlation exists between total mixing energy and any of the slurry properties measured; the free-water data show a strong dependence on the mixing device. The paper discusses the connection with coiled tubing, mixing systems, shear rate, wetting efficiency, additional laboratory investigations, and results.
Comparing simple role based access control models and access control lists (1997)

The RBAC metaphor is powerful in its ability to express access control policy in terms of the way in which administrators view organizations. The functionality of simple Role Based Access Control (RBAC) models are compared to access control lists (ACL). A very simple RBAC model is shown to be no different from a group ACL mechanism from the point of view of its ability to express access control policy. RBAC is often distinguished from ACLs by the inclusion of a feature which allows a session to be associated with a proper subset of the roles (i.e., groups in ACL terms) authorized for a user. Two possible semantics for this feature are described: one which requires a similar amount of processing as that required by ACLs, and another which requires significantly more processing than that required by ACLs. In addition, the capability to define role hierarchies is compared to an equivalent feature in ACLs.
Merging traditional VLSI with photonics (2005)

This tutorial paper looks at the possibilities for integrated photonic VLSI systems. It examines the need for "disruptive" technologies to solve the very problems that feature size scaling has introduced in traditional VLSI electronics and the potential for photonics and hybridized systems to solve these problems. It also considers the various challenges involved in constructing a photonic VLSI system as well as the potential pitfalls and disadvantages of this approach. The paper concludes with a discussion of these challenges and benefits by showing steps toward realizing such a system and how addressing problems in computer architecture with an innovative photonics approach can lead to benefits in system wide performance not previously seen with existing approaches.
Design, Aerodynamics, and Vision-Based Control of the DelFly (2009)

Light-weight, autonomous ornithopters form a promise to observe places that are too small or too dangerous for humans to enter. In this article, we discuss the DelFly project, in which we follow a top-down approach to ever smaller and more autonomous ornithopters. Top-down signifies that the project always focuses on complete flying systems equipped with camera. We give arguments for the approach by explaining which findings on the DelFly I and DelFly II recently led to the development of the DelFly Micro: a 3.07-gram ornithopter carrying a camera and transmitter onboard. These findings concern the design, aerodynamics, and vision-based control of the DelFly. In addition, we identify main obstacles on the road to fly-sized ornithopters.
A microcomputer implementation of PLA function and its use in a laboratory dealing with arithmetic algorithms (1989)

The function of a programmable logic array (PLA) was implemented using a microcomputer. The equipment is suitable for use in laboratories because it is electrically programmable, easy to be realized and maintained, and has sufficient capacity. It has been used for implementing fixed-point arithmetic algorithms, a subject of a laboratory course given to computer science majors of the University of Electro-Communications. The PLA program is created on a personal computer using a text editor and transmitted to the PLA through a serial communication line. Parallel interface circuits between the personal computer and the arithmetic unit to be implemented by the students were also prepared. The arrangements enable them to write and execute Pascal programs to test whether the implementation meets given specifications.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
High-power flip-chip-bonded silicon hybrid laser for temperature-control-free operation with micro-ring resonator-based modulator (2013)

A silicon (Si)-based, large-scale optical I/O chip will be a key device for a large-bandwidth, low-cost optical interconnection employed in future high-performance computing systems. For these Si optical I/O chips, a significant improvement in energy cost is strongly expected, hence, the use of micro ring-resonator (RR) based modulator is assumed to be a promising approach. In order to handle a narrow and temperature-dependent operation bandwidth of the RR-based modulator, we have proposed a novel Si transmitter that uses a cascaded RR MZ modulator and RR-based Si hybrid laser. The RR-based Si hybrid laser is an external cavity laser integrating an InP SOA and a Si mirror chip comprising a RR and DBR mirror. The SOA is flip-chip bonded to the Si mirror chip utilizing a precise flip-chip bonding technology. The fabricated Si hybrid laser exhibited a low threshold current of 9.4mA, a high output power of <15 mW, and a large wall-plug efficiency of 7.6% at 20°C. In addition, the device maintained a stable single longitudinal mode lasing and a low RIN level of <-130 dB/Hz for 20-60°C. We also fabricated an integrated Si transmitter combining a cascaded RR MZ modulator and RR-based Si hybrid laser. The 20-RR cascaded MZ modulator exhibited a 1-nm operation bandwidth using multiple low-Q RRs. The modulator was driven with 10Gbps PRBS signal. For a temperature range between 25 and 60°C, the lasing wavelength exhibited a red-shift of 2.5 nm, nevertheless, we confirmed clear eye openings without adjusting the operating wavelength of the modulator.
Electron-transfer reactions in cyanine borate ion pairs: photopolymerization initiators sensitive to visible light (1988)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectron-transfer reactions in cyanine borate ion pairs: photopolymerization initiators sensitive to visible lightSubhankar. Chatterjee, Peter. Gottschalk, Paul D. Davis, and Gary B. SchusterCite this: J. Am. Chem. Soc. 1988, 110, 7, 2326–2328Publication Date (Print):March 1, 1988Publication History Published online1 May 2002Published inissue 1 March 1988https://doi.org/10.1021/ja00215a067RIGHTS & PERMISSIONSArticle Views636Altmetric-Citations183LEARN 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 InReddit PDF (419 KB) Get e-Alerts Get e-Alerts
Adaptive noise cancellation in a fighter cockpit environment (2005)

In this paper we discuss some preliminary results on using Widrow's Adaptive Noise Cancelling (ANC) algorithm to reduce the background noise present in a fighter pilot's speech. With a dominant noise source present and with the pilot wearing an oxygen facemask, we demonstrate that good (>10 dB) cancellation of the additive noise and little speech distortion can be achieved by having the reference microphone attached to the outside of the facemask and by updating the filter coefficients only during silence intervals.
Nano silica treated water based drilling fluid formulation and analysis in various polymers and salts systems (2015)

This thesis presents the formulation of nano silica particle based water\ndrilling fluid, its characterization and performance simulation study. A total\nof ten test matrix fluid systems were designed to investigate the impact of\nsingle and combined additives such as salts, polymers and Nano silica on\nthe drilling fluid properties. The fluids have been characterized through their\nrheology, pH, and filtrate loss. Further the viscoelasticity of the selected\nnano based fluid systems were analysed. The performances of the fluids are\nalso simulated through hole-cleaning and hydraulics behaviours. Several\nobservations have been discussed in the main report.\nAmong others, one formulation which allows 2.81ppb (8.0 kg/m3) KCl is a\nDUO-VIS and CMC polymer system. Fluid 1 is a nano based drilling fluid.\nWhen fluid 1 is treated with an ex-situ 0.3g Na2CO3 salt, the rheology\nimproved greatly. The composition of the best Nano-silica based is:\n Fluid 1: = 500g H2O + 0.1g Nano silica + 4g KCl + 0.75g Na2CO3 +\n0.95g DUOVIS + 0.35g CMC + 25g Bentonite\n Fluid 2 = Fluid 1 + 0.3g Na2CO3 (ex-situ)\nFinally, this thesis comes to the conclusion that the application of nano\nsilica has shown positive and negative results. The negative results can be\nimproved by treating with polymers, which creates a positive synergy. A\npositive effect nano is the result of using the right concentration in a given\nsalt and polymer system. In addition, the performance of KCl in nano treated\nsystem could be improved with other salts such as NaCl and Na2CO3.
New method of continuously measuring differential capacitance changes (1975)

A new instrument has been developed which can resolve small capacitance changes and yet can respond to large capacitance changes linearly. Such a versatile instrument has important applications in a variety of physical measurements.
Development of a colonoscopy add-on device for improvement of the intubation process (2011)

A colonoscopy add-on device has been developed to reduce intubation time without modification of the current colonoscope and peripheral devices. One of the main purposes of the system is to minimize trauma caused by the distal tip of the colonoscope. The detachable sensory fixture at the end of the distal tip measures the distance between the distal tip and the colon wall in three directions, and the actuation system attached at the base of the colonoscope controls the distal tip by rotating two dial knobs. The device controls the distal tip to minimize contact between the distal tip and the colon wall, and the distal tip ideally points out the next possible lumen. A compatibility test of the infrared sensory system was carried out, and the design of the actuation system was accomplished. The system is integrated and controlled by a microprocessor. The device was tested in a silicon colon and porcine intestine. The results showed that a colonoscopist successfully reached the cecum with the aid of the colonoscopy add-on device without significant contact between the colon wall and the distal tip. The colonoscopy aid device was very helpful for the novice colonoscopist.
Effect of hydrostatic pressure on a mutant of Saccharomyces cerevisiae deleted in the trehalose-6-phosphate synthase gene (2006)

Mutants Saccharomyces cerevisiae deleted on the trehalose-6-phosphate synthase gene (tps1) and their parental wild-type cells were submitted to hydrostatic pressure in the range of 0-200 MPa. Experimental evidence showed that viability for both strains decreased with increasing pressure and that tps1 mutants, unable to accumulate trehalose, were more sensitive to hydrostatic pressure than the wild-type cells. Additionally, both tps1 and wild-type cells in the stationary phase, when there is an accumulation of endogenous trehalose, were more resistant to pressure than proliferating cells. Under these conditions, mutant cells were also more sensitive to pressure treatment than the wild type. The present work also showed that mild pressure pretreatment did not induce hydrostatic pressure resistance (barotolerance) in yeast cells.
Adaptive and Secure Load-Balancing Routing Protocol for Service-Oriented Wireless Sensor Networks (2013)

Service-oriented architectures for wireless sensor networks (WSNs) have been proposed to provide an integrated platform, where new applications can be rapidly developed through flexible service composition. In WSNs, the existing multipath routing schemes have demonstrated the effectiveness of traffic distribution over multipaths to fulfill the quality of service requirements of applications. However, the failure of links might significantly affect the transmission performance, scalability, reliability, and security of WSNs. Thus, by considering the reliability, congestion control, and security for multipath, it is desirable to design a reliable and service-driven routing scheme to provide efficient and failure-tolerant routing scheme. In this paper, an evaluation metric, path vacant ratio, is proposed to evaluate and then find a set of link-disjoint paths from all available paths. A congestion control and load-balancing algorithm that can adaptively adjust the load over multipaths is proposed. A threshold sharing algorithm is applied to split the packets into multiple segments that will be delivered via multipaths to the destination depending on the path vacant ratio. Simulations demonstrate the performance of the adaptive and secure load-balance routing scheme.
Patterns of Static Prehension in Normal Hands (1980)

For the purpose of classifying the patterns of static prehension in normal hands, the finger positions were photographed from 5 directions, while each of 7 normal adults held each of the 98 objects. The contact areas were also photographed from three to four directions. All sets of photographs were compared. Any two were considered identical in pattern when both the finger positions and the contact areas were alike. Fourteen identical patterns were identified: five patterns of power grip, four of intermediate grip, four of precision grip, and one other. Eighty-six percent of the grips shown by the subjects could be fitted into one of these prehension patterns, and the remaining 14 percent into intermediate or combined patterns. For all 7 subjects, 31 of 98 objects were grasped in an identical pattern and the rest of the objects, 67, in 2 or more patterns.
Effects of systemic administration of lidocaine and QX-314 on hyperexcitability of spinal dorsal horn neurons after incision in the rat (2006)

Although systemic lidocaine has been shown to suppress postoperative pain in a clinical setting, the mechanisms of action of lidocaine have not been elucidated. The present study was therefore designed to determine the relative contribution of central and peripheral sites to the action of lidocaine on incision-induced hyperexcitation of spinal dorsal horn (SDH) neurons in the rat. Receptive field (RF) areas, spontaneous activities, and responses of single wide-dynamic-range (WDR) neurons of the SDH to nonnoxious and noxious stimuli were recorded before and after longitudinal incisions of 1cm through the skin, fascia, and muscle had been made in the center of their RFs of the hindquarters. Significant increases in spontaneous activities, RF sizes, and responses of WDR neurons to both nonnoxious and noxious stimuli were observed at 30 min after the incision (P<0.001). Systemic administration of lidocaine (1 mg/kg bolus plus 0.5 mg/kg/h and 2 mg/kg bolus plus 1 mg/kg/h) and QX-314 (1mg/kg bolus plus 0.5 mg/kg/h and 2 mg/kg bolus plus 1 mg/kg/h) significantly but temporarily suppressed and reversed the increases in spontaneous activity, responses to nonnoxious, and noxious stimuli and RF sizes (P<0.01). Systemic administration of the same doses of lidocaine and QX-314 did not affect responses of WDR neurons to nonnoxious or noxious stimuli or their RF sizes in sham-operated animals in which an incision had not been made. The results suggest that systemic administration of lidocaine has suppressive effects on postoperative pain mainly through peripheral sites of action.
Facial Attractiveness (2007)

Symmetry is thought to be a major prerequisite for an attractive face. Many faces are not symmetric, yet are still regarded as beautiful. What role, then, does asymmetry play in the perception of beauty? We studied the assessment of computer-manipulated images by independent judges (n = 200-250): part A: nevi located at different positions; part B: standardized changes of the orbital region. The results showed that slight lateral orbital and facial asymmetry does not impair attractiveness at all and that asymmetries close to the midline are significantly less attractive than those affecting the lateral aspect of the face (P < 0.001). A single nevus which is located laterally on the face is significantly more attractive than a nevus close to the midline (P < 0.001). Faces with a completely symmetric bilateral pair of nevi in the same lateral positions (perceived as attractive when alone), received the worst ratings (P < 0.001). Symmetry is a characteristic of the attractive face, but there are exceptions to the rule. Under certain conditions symmetry can be completely unattractive. The visual impact of symmetry on the perception of beauty increases significantly when approaching the midline.
Identification of the Common Antigenic Determinant Shared by <i>Streptococcus pneumoniae</i> Serotypes 35A and 20 Capsular Polysaccharides — Structural Analysis of the <i>Streptococcus pneumoniae</i> Serotype 35A Capsular Polysaccharide (1997)

The specific polysaccharide antigen of Streptococcus pneumoniae serotype 35A was shown, by a combination of one- and two-dimensional NMR methods and chemical analyses, to be a high-molecular-mass polymer composed of D-galactose, D-glucose, mannitol, and phosphate (3:1:1:1). The pentasaccharide repeating unit is polymerized through phosphate diester linkages to give the structure, [formula in text] O-Acetyl substituents are present at positions 5 and 6 of the 3)-beta-D-Galf residue and at position 2 of the 6)-beta-D-Galf residue. The capsular polysaccharides of S. pneumoniae serotypes 20 and 35A both contain the disaccharide unit -->3)-beta-D-Galf-(1-->3)-beta-D-Glcp-(1--> which is the probable structural determinant responsible for the serological cross reactivity of the two polysaccharides.
The Reinforcement of Communication Security of the Internet of Things in the Field of Intelligent Home through the Use of Middleware (2011)

The modern intelligent home system involves the fields of the single-chip microcomputer (SCM) control technology, communication technology, the computer technology, etc. The Internet of things realizes the communications between objects and objects, and objects and people. It can achieve information collection, remote control and monitoring on the modern intelligent home through the Internet of things. The article proposes the theory that through the use of middleware, it can achieve the reinforcement of the system security of the Internet of things based on the intelligent home. The article also designs the use of the Window CE platform of the intelligent home gateway, analyzes the network protocol stack of the overall structure and dissects the accomplishing technologies of Windows CE-based IPsec VPN core modules of and their corresponding performance analysis.
An Integrated and Galvanically Isolated DC-to-15.3 MHz Hybrid Current Sensor (2019)

A wide-bandwidth galvanically isolated current sensor in a 180 nm CMOS technology is presented. It combines two sensing principles for the contactless and lossless current measurement in power electronic applications. A dedicated vertical Hall sensor (low frequencies) and an integrated helix-shaped Rogowski coil (high frequencies) enable to measure currents in any power line under the chip from DC up to 15.3 MHz, which exceeds prior art by 5x. Both sensing concepts are fully integrated on one microchip without the need for any kind of magnetics or post-processing. The wide bandwidth results in fast transient properties, verified by an IGBT double pulse measurement of current pulses with an amplitude of 60 A and slew rates up to 1 kA/μs. A sensitivity of 3.1 mV/A is achieved.
Optimal Pairings (2010)

In this paper, we introduce the concept of an optimal pairing, which by definition can be computed using only <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">log</i> <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">r</i> /¿( <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">k</i> ) basic Miller iterations, with <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">r</i> the order of the groups involved and <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">k</i> the embedding degree. We describe an algorithm to construct optimal ate pairings on all parametrized families of pairing friendly elliptic curves. Finally, we conjecture that any nondegenerate pairing on an elliptic curve without efficiently computable endomorphisms different from powers of Frobenius requires at least <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">log</i> <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">r</i> /¿( <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">k</i> ) basic Miller iterations.