gebhart/patrepeval huggingface dataset:
Neighbour Discovery for Transmit Power Adjustment in IEEE 802.15.4 Using RSSI (2011)

Neighbour discovery (ND) is an important process for self-configuration as it provides useful information, such as neighbour nodes with some power saving parameters, for other processes. In wireless sensor networks, transmission power adjustment is one of the possible ways to minimise energy consumption and prolong network lifetime. This paper proposes the ND technique which provides the received signal strength indicator (RSSI) value for dynamic transmit power adjustment in IEEE 802.15.4. This work focuses on a single-hop network of wireless devices with different maximum transmission powers, where an asymmetric wireless link is very common. The energy consumption and packet loss rate are investigated through testbed experimentation. The proposed algorithm shows transmission efficiency which does not affect the packet loss rate. Moreover, it supports both environment change and the change of distance between nodes.
An ADPLL circuit using a DDPS for genlock applications (2004)

This paper presents a fully programmable All-Digital PLL (ADPLL) circuit that is able to synchronize any frequency between 12 MHz and 200 MHz, with a frequency between 24 Hz and 100 MHz. This ADPLL circuit uses a Direct Digital Period Synthesizer as a digitally controlled oscillator. The measured jitter at the output is between 184 and 274 ps (depending on control parameters). The circuit is implemented in 0.18 /spl mu/m CMOS technology and dissipates 50 mW when running at 150 MHz.
3D curvature grinding path planning based on point cloud data (2016)

This paper proposes a novel method which uses online measurement data to create robot path for 3D grinding of workpieces with complex surfaces. The surface is measured as point cloud by a 3D scanner. The point cloud data is processed by filtering and smoothing, and then used for path planning. The grinding paths are generated by creating a series of planes to intersect with the target surface. A point cloud data slicing algorithm based on octree is developed to calculate the intersecting lines between point cloud data and planes. Subsequently the equal step method developed discretizes the grinding path for smooth curvatures, and utilizes local plane fitting to estimate the normal at contact points.
3C-SiC Transistor With Ohmic Contacts Defined at Room Temperature (2016)

Among all SiC polytypes, only 3C-SiC has a cubic structure and can be hetero-epitaxial grown on large area Si substrate, thus providing an alternative choice for fabricating cheap wide bandgap power devices. Here, we present a low resistivity ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\sim 3\times 10^{\mathrm {{-5}}} \Omega ~\cdot $ </tex-math></inline-formula> cm <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$^{2})$ </tex-math></inline-formula> ohmic contact formed by directly depositing a Ti/Ni metal stack on n-type 3C-SiC without any extra annealing. For the first time, 3C-SiC lateral MOSFETs with as-deposited ohmic contacts were fabricated, and it turned out not only the ohmic contact is free from any interface voids, but also a higher field-effect mobility value ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\sim 80$ </tex-math></inline-formula> cm <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$^{\mathrm {{2}}}$ </tex-math></inline-formula> /V <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\cdot $ </tex-math></inline-formula> s) was achieved compared with the annealed devices.
X-ray diffraction line broadening: modeling and applications to high-Tc superconductors (1993)

A method to analyze powder-diffraction line broadening is proposed and applied to some novel high-<i>T</i><sub>c</sub> superconductors. Assuming that both size-broadened and strain-broadened profiles of the pure-specimen profile are described with a Voigt function, it is shown that the analysis of Fourier coefficients leads to the Warren-Averbach method of separation of size and strain contributions. The analysis of size coefficients shows that the "hook" effect occurs when the Cauchy content of the size-broadened profile is underestimated. The ratio of volume-weighted and surface-weighted domain sizes can change from ~1.31 for the minimum allowed Cauchy content to 2 when the size-broadened profile is given solely by a Cauchy function. If the distortion co-efficient is approximated by a harmonic term, mean-square strains decrease linearly with the increase of the averaging distance. The local strain is finite only in the case of pure-Gauss strain broadening because strains are then independent of averaging distance. Errors of root-mean-square strains as well as domain sizes were evaluated. The method was applied to two cubic structures with average volume-weighted domain sizes up to 3600 Å, as well as to tetragonal and orthorhombic (La-Sr)<sub>2</sub>CuO<sub>4</sub>, which exhibit weak line broadenings and highly overlapping reflections. Comparison with the integral-breadth methods is given. Reliability of the method is discussed in the case of a cluster of the overlapping peaks. The analysis of La<sub>2</sub>CuO<sub>4</sub> and La<sub>1.85</sub>M<sub>0.15</sub>CuO<sub>4</sub>(M = Ca, Ba, Sr) high-<i>T</i><sub>c</sub> superconductors showed that microstrains and incoherently diffracting domain sizes are highly anisotropic. In the superconductors, stacking-fault probability increases with increasing <i>T</i><sub>c</sub>; microstrain decreases. In La<sub>2</sub>CuO<sub>4</sub>, different broadening of (<i>h</i>00) and (0<i>k</i>0) reflections is not caused by stacking faults; it might arise from lower crystallographic symmetiy. The analysis of Bi-Cu-O superconductors showed much higher strains in the [001] direction than in the basal <i>a-b</i> plane. This may be caused by stacking disorder along the <i>c</i>-axis, because of the two-dimensional weakly bonded BiO double layers. Results for the specimen containing two related high-<i>T</i><sub>c</sub> phases indicate a possible mechanism for the phase transformation by the growth of faulted regions of the major phase.
Secretion and binding of transforming growth factor β by scleroderma and normal dermal fibroblasts (1990)

The production and binding of transforming growth factor beta (TGF beta) were compared in dermal fibroblast lines derived from scleroderma patients and normal control donors. The mean +/- SEM 24-hour level of secretion of TGF beta by fibroblast lines derived from the involved skin of scleroderma patients was 30.8 +/- 5.5 pmoles/10(6) cells, and it was 29.7 +/- 5.8 pmoles/10(6) cells for fibroblast lines derived from the normal skin of the healthy donors. Thus, we found that the fibroblasts themselves produced TGF beta. TGF beta production was equivalent in fibroblast lines derived from clinically involved and uninvolved skin of scleroderma patients. The mean +/- SEM number of TGF beta receptors per cell on scleroderma fibroblasts was 9,736 +/- 1,375, with a mean +/- SEM Kd of 25.2 +/- 3.9 pM. This value was similar in control fibroblasts, at 12,431 +/- 2,425 TGF beta receptors per cell, with a mean +/- SEM Kd of 27.1 +/- 5.2 pM.
Primary isolation and serial passage of hepatitis A virus strains in primate cell cultures (1984)

Although several primate cell types have been reported to support replication of hepatitis A virus, optimal conditions for the isolation and production of quantities of virus have not been defined. We therefore examined seven different primate cell types for their ability to support replication of primate-passaged and wild-type virus as reflected by intracytoplasmic accumulation of viral antigen (direct immunofluorescence and radioimmunoassay) and propagation of cell culture-adapted virus. Of the cells tested, low-passage African green monkey kidney (AGMK) cells were most sensitive for initial isolation. Viral replication was documented after inoculation of AGMK cells with seven of nine hepatitis A virus antigen-positive fecal specimens (from seven epidemiologically distinct sources). With six inocula, virus was successfully passed in serial cultures. AGMK-adapted virus was readily propagated in continuous AGMK (BS-C-1) cells. The optimal temperature for the growth of virus in BS-C-1 cells was 35 degrees C. Viral release into supernatant fluids was documented in the absence of any cytopathic effect, and infectivity titers in supernatant fluids 21 days after inoculation (50% tissue culture infective does [TCID50], 10(6.0)/ml) equalled or exceeded those in the cell fraction (TCID50, 10(5.5)/ml). Cells maintained in serum-free media readily supported viral growth, with yields of virus (TCID50, 10(6.5)/ml) equal to or greater than those obtained with cells maintained in 2% fetal bovine serum.
Nonlinearity analysis of resistor string A/D converters (1982)

A mismatch in the resistor ratio causes nonlinearity in successive-approximation A/D converters fabricated with a <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2^{n}R</tex> potentiometric technique. This paper describes a theoretical analysis of this kind of nonlinearity and a method of evaluating the variations in resistance obtained in experiments with monolithic resistors. The resistance variations are classified into a statistically random variation component and a deterministic variation component. The relationship of both components to the nonlinearity error is then clarified. A 7-bit diffused resistor string was fabricated with a silicon-gate NMOS process. An autocorrelation technique was used to identify and separate several resistance variation components in the string. On the basis of the theoretical and experimental results that were obtained, we have developed 10-bit A/D converters and confirmed their accuracy.
Design and implementation of the high precision laser thickness gauge (2013)

Based on the differential measurement principle, the design and realization implementation of the non-contact high precision laser online thickness gauge is proposed in this article. Firstly the system adopts TMS320F2812 as its main control chip, realizes the platform for data acquisition and processing as well as measurement equipment control. Secondly lower pass filter groups are designed to overcome the noise disturbance during the thickness measuring process. Finally based on Windows CE operating system, a friendly human-computer interaction platform is developed. Practical application shows that the system has high precision measurement, stable and reliable performance which satisfies the factory's actual demand.
[Immunoablation or otherwise followed by hematopoietic cell stem as intensive treatment of severe autoimmune diseases]. (2002)

The treatment of severe autoimmune diseases has been recently revitalized by the increasing utilization of clinical interventions aimed at ablating/abrogating autoimmune lymphoid clones followed (but not in certain procedures) by transplantation of allogeneic, but also autologous, hematopoietic stem cells. Two different investigative avenues have paved the way to specific clinical studies. The first originates from the epochal murine experiments of the '70s, and has been greatly expanded in the last decade. A graft-versus-autoimmunity effect could also be demonstrated. In addition, it could also be shown that induced experimental autoimmune diseases such as adjuvant arthritis and autoimmune encephalomyelitis could, surprisingly, be cured following autologous transplantation. The first results in humans were observational and derived from studies including patients with coincidental diseases (severe autoimmune diseases plus leukemia/aplasia) treated with allogeneic hematopoietic stem cell transplants. Although the concept of an allogeneic transplant is indisputably more appealing, very few patients with an isolated severe autoimmune disease have been treated using such a therapeutic approach. Reduced intensity conditioned transplants relying on subsequent graft-versus-autoimmunity effects strengthened by donor lymphocyte infusions are being explored cautiously. On the other hand, autologous transplants are being performed quite extensively. To date, transplanted severe autoimmune diseases include multiple sclerosis, connective tissue diseases (systemic sclerosis, systemic lupus erythematosus, rheumatoid arthritis) and many others. It is uncertain if the main mechanism is solely immunoablative, or whether tolerized lymphocytes may also develop during a postulated "window of opportunity" following the transplant.
Optimized inducible shRNA and CRISPR/Cas9 platforms for <i>in vitro</i> studies of human development using hPSCs (2016)

Inducible loss of gene function experiments are necessary to uncover mechanisms underlying development, physiology and disease. However, current methods are complex, lack robustness and do not work in multiple cell types. Here we address these limitations by developing single-step optimized inducible gene knockdown or knockout (sOPTiKD or sOPTiKO) platforms. These are based on genetic engineering of human genomic safe harbors combined with an improved tetracycline-inducible system and CRISPR/Cas9 technology. We exemplify the efficacy of these methods in human pluripotent stem cells (hPSCs), and show that generation of sOPTiKD/KO hPSCs is simple, rapid and allows tightly controlled individual or multiplexed gene knockdown or knockout in hPSCs and in a wide variety of differentiated cells. Finally, we illustrate the general applicability of this approach by investigating the function of transcription factors (OCT4 and T), cell cycle regulators (cyclin D family members) and epigenetic modifiers (DPY30). Overall, sOPTiKD and sOPTiKO provide a unique opportunity for functional analyses in multiple cell types relevant for the study of human development.
Anterior Chamber Angle Measurement with Anterior Segment Optical Coherence Tomography: A Comparison between Slit Lamp OCT and Visante OCT (2008)

Although Visante OCT and SLOCT demonstrate high interobserver reproducibility for anterior chamber angle measurements, their agreement was poor.
Quantum lattice-gas model for the many-particle Schrödinger equation in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>d</mml:mi></mml:math>dimensions (1998)

We consider a general class of discrete unitary dynamical models on the lattice. We show that generically such models give rise to a wave function satisfying a Schr\"odinger equation in the continuum limit, in any number of dimensions. There is a simple mathematical relationship between the mass of the Schr\"odinger particle and the eigenvalues of a unitary matrix describing the local evolution of the model. Second quantized versions of these unitary models can be defined, describing in the continuum limit the evolution of a nonrelativistic quantum many-body theory. An arbitrary potential is easily incorporated into these systems. The models we describe fall in the class of quantum lattice-gas automata and can be implemented on a quantum computer with a speedup exponential in the number of particles in the system. This gives an efficient algorithm for simulating general nonrelativistic interacting quantum many-body systems on a quantum computer.
Shape Optimization of Reinforced Members by Mode Controlled approaching (2000)

If the buckling mode of the main side members can be kept in a good mode, it is possible to get a stead deceleration characteristic, and to reduce the weight. In this study, the authors proposed a new mode controlling approach to control the buckling mode of the side member. The results of the optimized design given by the new approach showed that not only can this new design method reduce the weight of the side member at the geometric design step, but also it can improve the basic characteristic of the energy absorbing behavior of side member.
Hybrid LZA: a near optimal implementation of the leading zero anticipator (2009)

The Leading Zero Anticipator (LZA) is one of the main components used in floating point addition. It tends to be on the critical path, so it has attracted the attention of many researchers in the past. Most LZAs used today can be classified in two categories: exact and inexact. Inexact LZAs are normally preferred due to their shorter critical paths and reduced complexity; however, the inexact LZA requires an additional correct stage. In this paper we present a new LZA architecture that combines ideas taken from prior exact and inexact LZAs. Our new LZA improves the delay of floating point addition by 7--10% compared to state of art techniques as well as reduces hardware area in most cases. We also establish theoretical lower bounds on the delay of an LZA and we show that our LZA is very close to these bounds.
Cystatin C, an inhibitor of bone resorption produced by osteoblasts (1997)

The effects of human cystatin C on bone resorption, enzyme release, osteoclast generation, bone cell proliferation and bone matrix protein biosynthesis have been examined in different in vitro systems. The effects of cystatin C were compared with those of calcitonin and E 64 (trans-Epoxysuccinyl-L-leucyl-amido-(4-guanidino)butane). Recombinant human cystatin C and E 64 dose dependently inhibited the mobilization of 45Ca and the release of 3H (from [3H]-proline-labelled bones) in mouse calvariae stimulated to resorb by parathyroid hormone (PTH) or 1,25(OH)2-vitamin D3. Cystatin C and E 64 also inhibited the release of 45Ca from bones stimulated by thrombin, interleukin-1 and prostaglandin E2. In PTH-stimulated bones, the inhibitory action of cystatin C and E 64 on 45Ca release was observed after 6-9 h, whereas the inhibitory effect on 3H release was seen after just 2 h. In contrast, calcitonin caused an inhibition of both 45Ca and 3H release which was seen after 2 h. The PTH-stimulated release of the lysosomal enzymes was not affected by cystatin C and E 64, whereas calcitonin caused a significant inhibition. In contrast to calcitonin, cystatin C did not affect PTH-stimulated enhancement of osteoclast generation in the mouse calvariae. Using Western blot analysis and radioimmunoassay, we demonstrated that mouse calvarial bones and MC3T3-E1 cells produce cystatin C. These data show that cystatin C is synthesized by bone cells and that recombinant human cystatin C inhibits bone resorption in vitro without affecting bone cell proliferation, bone matrix formation or osteoclast generation. The mechanism seems to be due primarily to inhibition of the activity of osteoclastic proteolytic enzymes released into the resorption lacunae.
Metallic conduction and ferromagnetism in <i>M</i>Al2O4/SrTiO3 spinel/perovskite heterostructures (<i>M</i> = Fe, Co, Ni) (2018)

Recently, a high mobility quasi-two-dimensional electron gas has been reported for the heterointerface between two insulating and nonmagnetic oxides of spinel γ-Al2O3 and perovskite SrTiO3 (STO). Herein, we fabricated the epitaxial heterostructure with Al-based magnetic spinel oxide MAl2O4 (M = Fe, Co, Ni) on perovskite STO. Remarkably, all the MAl2O4 (M = Fe, Co, Ni) films exhibit ferromagnetic behavior up to room temperature. Although FeAl2O4/STO is insulating, the NiAl2O4/STO and CoAl2O4/STO heterointerfaces are found to be highly metallic and exhibit the anomalous Hall effect (AHE) at temperatures below 30 K. Their Hall mobility is as high as 3 × 104 cm2 V−1 s−1, comparable to that of the γ-Al2O3/STO interface. There has been evidence of oxygen-vacancy-related magnetism in γ-Al2O3/STO at temperatures below 5 K, while the enhanced AHE in NiAl2O4/STO and CoAl2O4/STO likely comes from the magnetic proximity effect induced by the top ferromagnetic MAl2O4 spinel films.
Glucosamine sulfate and cartilage type II collagen degradation in patients with knee osteoarthritis: randomized discontinuation trial results employing biomarkers. (2005)

No statistically significant effect of glucosamine sulfate on type II collagen fragment levels in serum or urine was observed for knee OA over 6 months. Further research is necessary to elucidate which biopathologic systems, if any, are affected by glucosamine treatment. While collagen degradation products may be of value in predicting progression, at least as defined by clinical flare, a larger dataset would be needed to prove this.
Effect of Prostaglandins on Cyclic AMP Production in Cultured Human Ciliary Muscle Cells (1998)

Prostaglandins (PGs) lower intraocular pressure by increasing uveoscleral outflow, presumably via a receptor-mediated mechanism coupled to a second messenger pathway in the ciliary muscle. In the present study, we examined the effect of prostanoids on cyclic AMP production in cultured human ciliary muscle cells. Cells were identified based on their expression of smooth muscle specific alpha-actin and monoclonal antibody against desmin. Cyclic AMP production in confluent cells incubated with buffer solution containing various concentrations of prostanoids was analyzed by radioimmunoassay. PGE2 caused a time-dependent increase in cyclic AMP concentrations which reached a maximum after 10 mins. With the exception of PGD2, all prostanoids produced a concentration-dependent increase in cyclic AMP levels with the following rank order of activity: PGE2 > 11-deoxy-PGE1 > 16,16-dimethyl PGE2 > sulprostone > PGF2alpha. PGE2-induced increase on cyclic AMP levels was unaffected by AH6809, an antagonist at both PGD2 (DP) and E2 (EP1) receptors. Flurbiprofen decreased basal cyclic AMP concentrations suggesting that intramurally-generated PGs stimulate the formation of the nucleotide in ciliary smooth muscle cells. PGE2-induced increases in cyclic AMP production was synergistic with those induced by the diterpene activator of adenylyl cyclase, forskolin. We conclude that prostanoids active at EP2-receptors can stimulate cyclic AMP production in cultured human ciliary muscle cells.
Seamless session mobility using short range communication technologies (2014)

Rapid adoption of smartphones and tablets in recent years has changed the way people communicate with each other and operate in the work environment. The use of personal devices in the enterprise has become commonplace. These devices have given workers the flexibility of being mobile and still participate in collaboration sessions. However, transferring sessions between devices is not very seamless and causes disruptions in the sessions, resulting in an unsatisfactory user experience. This work presents an architecture and implementation for seamless session mobility across different types of devices and hardware/software platforms. This architecture is not restricted to a specific collaboration server and can accommodate multi-vendor environments.