gebhart/patrepeval huggingface dataset:
Walking Parameters Estimation Based on a Wrist-Mounted Inertial Sensor for a Walker User (2017)

This paper presents an algorithm for estimating walking parameters (step length, step speed, and walking distance) using a wrist-mounted inertial measurement unit for those who use a front-wheeled walker. Two walking styles are considered: step-by-step walking and continuous walking. A new zero-velocity detection algorithm is proposed for when the user walks step by step. Then, a standard inertial navigation algorithm is applied using a Kalman filter and zero-velocity update. For continuous walking, a step detection algorithm is proposed based on the bio-mechanical relationship between arm and foot movements. A step length estimation model was derived by testing 128 different features. The accuracy of walking parameters estimation was verified through 20-m walking experiments with five subjects.
Geiger photodiode array for compact, lightweight laser-induced breakdown spectroscopy instrumentation (2003)

The development of a unique spectrometer based on an array of Geiger photodiodes has been shown to enhance the performance of laser-induced breakdown spectroscopy (LIBS) instrumentation. These compact, silicon-based detectors eliminate the need for postamplification electronics, allow for the detection of single photons at room temperature, and do not require complex gating-timing circuitry. The detectors have dark-count rates of <500 Hz at room temperature and a good response from the UV to the near IR. Their high sensitivity makes them candidates for standoff analysis as part of a LIBS spectrum analyzer.
Tuning of the Prolyl<i>trans</i>/<i>cis</i>-Amide Rotamer Population by Use of<i>C</i>-Glucosylproline Hybrids (2007)

We describe the synthesis of a fused bicyclic C-glucosylproline hybrid (GlcProH) from commercially available 2,3,4,6-tetra-O-benzyl-d-glucopyranose. The GlcProH was incorporated into the model peptides Ac-GlcProH-NHMe and Ac-Gly-GlcProH-NHMe. Postsynthetic modifications can be introduced via derivatization of the carbohydrate scaffold. Conformational analysis of the GlcProH-modified model peptides shows that while the conformation of GlcProH remains fixed, the prolyl N-terminal amide equilibrium (Kt/c) can be varied with different modifications of the carbohydrate scaffold. Simple N-acyl derivatives studied by NMR spectroscopy showed that in CD3OD there was an increase in the cis-amide content as the sugar substituents changed from benzyl (10%) to hydroxyl (22%) to acetate (36%). Similar effects were observed in DMSO-d6. The exact nature of the influence is unclear, but it most likely arises through intramolecular interactions between sugar groups and the peptidic amide backbone. Overall, our GlcProH demonstrates variation in Kt/c through tuning of the carbohydrate scaffold: a new concept in proline peptidomimetics.
Aluminum Monolaurate and Proposed Structures for Aluminum Soaps (1949)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAluminum Monolaurate and Proposed Structures for Aluminum SoapsCharles G. McGeeCite this: J. Am. Chem. Soc. 1949, 71, 1, 278–282Publication Date (Print):January 1, 1949Publication History Published online1 May 2002Published inissue 1 January 1949https://doi.org/10.1021/ja01169a072Request reuse permissionsArticle Views99Altmetric-Citations22LEARN 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 (637 KB) Get e-Alertsclose Get e-Alerts
Using Semantic Wikis to Support Software Reuse (2008)

It has been almost four decades since the idea of software reuse was proposed. Many success stories have been told, yet it is believed that software reuse is still in the development phase and has not reached its full potential. How far are we with software reuse research? What have we learned from previous software reuse efforts? This paper is an attempt to answer these questions and propose a software reuse repository system based on semantic Wikis. In addition to supporting general collaboration among users offered by regular wikis, semantic Wikis provide means of adding metadata about the concepts and relations that are contained within the Wiki. This underlying model of domain knowledge enhances the software repository navigation and search performance and result in a system that is easy to use for non-expert users while being powerful in the way in which new artifacts can be created and located.
Insect larval expression process is optimized by generating fusions with green fluorescent protein (1999)

The insect larvae/baculovirus protein production process was dramatically simplified by expressing fusion proteins containing green fluorescent protein (GFP) and the product-of-interest. In this case, human interleukin-2 (hIL-2) and chloramphenicol acetyl-transferase (CAT) were model products. Specifically, our fusion construct was comprised of a histidine affinity ligand for simplified purification using immobilized metal affinity chromatography (IMAC), the UV-optimized GFP (GFPuv) as a marker, an enterokinase cleavage site for recovery of the product from the fusion, and the product, hIL-2 or CAT. Both the approximately 52 kDa GFPuv/hIL-2 and approximately 63 kDa GFPuv/CAT fusions were expressed in Trichoplusia ni larvae at 9.0 microg-hIL-2 and 24.1 microg-CAT per larva, respectively. The GFP enabled clear identification of the infection process, harvest time, and more importantly, the quantity of product protein. Because the GFP served as a marker, this technique obviates the need for in-process Western analyses (during expression, separation, and purification stages). As a purification marker, GFP facilitated rapid identification of product-containing elution fractions (Cha et al., 1999b), as well as product-containing waste fractions (e.g., cell pellet). Also, because the fluorescence intensity was linear with hIL-2 and CAT, we were able to select the highest-producing larvae. That is, three fold more product was found in the brightest larva compared to the average. Finally, because the GFP is attached to the product protein and the producing larvae can be selected, the infection and production processes can be made semi-continuous or continuous, replacing the current batch process. These advantages should help to enable commercialization of larvae as expression hosts.
Ultrafast all-optical logic gate using a nonlinear optical loop mirror based multi-periodic transfer function (2008)

A complete set of all-optical logic gate operations using a nonlinear-optical-loop-mirror-based multi-periodic transfer function is proposed. This scheme can operate all of sixteen two-input logic operations without changing configuration. We experimentally demonstrate AND, NAND, OR, NOR, XOR, and XNOR operations at 40 Gbit/s in a single configuration. We investigate the limitation of processing speed, and numerical simulation will show the feasibility of the processing speed up to 350 Gbit/s.
Hydrothermal Synthesis and Structures of Three-Dimensional Zinc Phosphates Built-Up from Two-Dimensional Layers and One-Dimensional Chains and Ladders (2002)

Three new zinc phosphates, I, [(NH4)(CH3CH2CH2NH3)][Zn3(HPO4)(PO4)2]; II, [NH3(CH2)3NH(CH2)3NH3][Zn3(H2PO4)(HPO4)2(PO4)]·H2O; and III, [NH3(CH2)3NH2(CH2)3NH3][Zn3(HPO4)3(PO4)], have been synthesized in the presence of 1,3,5-triethylhexahydrotriazine (TEHT) and dipropylenetriamine (DPTA), and their structures have been determined by single-crystal X-ray diffraction. The structures consist of vertex-linking ZnO4 and PO4 tetrahedral units forming channels bound by 8-, 10-, and 16-T atoms (T = Zn, P). While the structures of I and II are built up from two-dimensional layers cross-linked by one-dimensional ladders or chains, that of III is built up by cross-linking of ladders. The framework structure of II and III is built up from strictly alternating ZnO4 and PO4 units, and in I, infinite Zn−O−Zn chains are observed, formed by two Zn atoms sharing two three-coordinated oxygen atoms. The amine molecule in I, propylamine, has been obtained by the decomposition of TEHT under hydrothermal conditions. The amine molecules in I−III occupy the channels. Crystal data: I, triclinic, space group = P(−1) (no. 2), M = 559.18, a = 5.0986(6) Å, b = 10.4943(1) Å, c = 12.4457(1) Å, α = 87.614(2)°, β = 87.258(1)°, γ = 89.994(2)°, V = 664.6(1) Å3, R1 = 0.0342, wR2 = 0.091 [1913 observed reflections with I > 2σ(I)]; II, triclinic, space group = P(−1) (no. 2), M = 731.28, a = 8.4821(7) Å, b = 9.1326(8) Å, c = 14.7961(1) Å, α = 90.382(2)°, β = 100.123(2)°, γ = 107.04(1)°, V = 1076.7(1) Å3, R1 = 0.0332, wR2 = 0.0747 [2954 observed reflections with I > 2σ(I)] III, monoclinic, space group = Cc (no. 7), M = 713.26, a = 15.1085(4) Å, b = 8.8403(4) Å, c = 17.2628(6) Å, β = 114.537(2)°, V = 2097.5(1) Å3, R1 = 0.0315, wR2 = 0.0804 [2323 observed reflections with I > 2σ(I)].
Radiation processed hydrogel of poly (vinyl alcohol) with biodegradable polysaccharides. (2006)

Poly(vinyl alcohol) (PVA) can be modified to polymer hydrogels by radiation crosslinking and can be used in different biomedical applications. A study was done on the optimization of ingredients concentration for preparing good quality PVA hydrogels with natural polysaccharides. The synthesized hydrogels were also characterized by measuring the different physical properties e.g. gel fraction, swelling and absorption rate. Besides these, sterility test were also performed. Good quality hydrogels were obtained from PVA and natural polysaccharides solutions with 27 kGy radiation dose. There is an influence of natural polysaccharides on the gel fraction of hydrogel. The increase in the amount of polysaccharide causes a decrease in gel fraction that is decrease in the crosslinking density of PVA hydrogel network. The prepared hydrogels were found to be sterile.
MRI endoscopy using intrinsically localized probes (2009)

Magnetic resonance imaging (MRI) is traditionally performed with fixed externally applied gradient magnetic fields and is hence intrinsically locked to the laboratory frame of reference (FoR). Here a method for high-resolution MRI that employs active, catheter-based, tiny internal probes that utilize the spatial properties of the probe itself for localization is proposed and demonstrated at 3 T. Because these properties are intrinsic to the probe, they move with it, transforming MRI from the laboratory FoR to the FoR of the device itself, analogous to an endoscope. The "MRI endoscope" can utilize loop coils and loopless antennas with modified sensitivity, in combination with adiabatic excitation by the device itself, to restrict the MRI sensitivity to a disk-shaped plane a few mm thick. Excitation with the MRI endoscope limits the eddy currents induced in the sample to an excited volume whose size is orders of magnitude below that excited by a conventional body MRI coil. Heat testing shows maximum local temperature increases of <1 degrees C during MRI, within regulatory guidelines. The method is demonstrated in a kiwifruit, in intact porcine and rabbit aortas, and in an atherosclerotic human iliac artery specimen, with in-plane resolution as small as 80 microm and 1.5-5 mm slice thickness.
Synthesis and biological evaluation of cytostatin analoguesElectronic supplementary information (ESI) available: experimental details. See http://www.rsc.org/suppdata/cc/b3/b305308n/ (2003)

Analogues of the serine/threonine phosphatase 2A inhibitor cytostatin were synthesized and evaluated as inhibitors of various phosphatases in order to establish a basic structure-activity relationship (SAR) of the natural product.
ChemInform Abstract: Hydrogen Bonding. Part 18. Gas‐Liquid Chromatographic Measurements for the Design and Selection of Some Hydrogen Bond Acidic Phases Suitable for Use as Coatings on Piezoelectric Sorption Detectors. (1991)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Cell Polarity and Asymmetric Cell Division within Human Hematopoietic Stem and Progenitor Cells (2007)

Like other somatic stem cells, hematopoietic stem cells (HSC) contain the capacity to self-renew and to give rise to committed progenitor cells that are able to replenish all hematopoietic cell types. To keep a constant level of HSC, the decision whether their progeny maintain the stem cell fate or become committed to differentiation needs to be highly controlled. In this context it became evident that HSC niches fulfill important functions in keeping the level of HSC more or less constant. Before discovering such niches, it was widely assumed that HSC divide asymmetrically to give birth to a daughter cell maintaining the stem cell fate and to another one which is committed to differentiation. Here, I summarize some of the experimental data being compatible with the model of asymmetric cell division and review some of our latest findings, which demonstrate the occurrence of asymmetric cell divisions within the HSC and hematopoietic progenitor cell compartment. Since cell polarity is an essential prerequisite for asymmetrically dividing as well as for migrating cells, I will also discuss some aspects of cell polarity of primitive hematopoietic cells.
Spectroscopic Studies of Anhydroretinol, an Endogenous Mammalian and Insect <i>retro</i>‐Retinoid (1994)

Abstract For corrigendum see DOI: 10.1002/anie.199423481
Normal incidence intersubband absorption in vertical quantum wells (1995)

N-doped vertical AlGaAs quantum wells have been fabricated by metalorganic vapor phase epitaxial growth of a single-doped AlGaAs layer on a submicron grating. Intersubband absorption at normal incidence is demonstrated in those quantum wells. This opens new possibilities for infrared quantum well devices using intersubband transitions.
Chemical modification of tumour blood flow (1988)

The preferential modification of tumour blood flow with chemical agents has been extensively investigated for the purpose of improving the treatment of tumours with ionizing radiation, chemicals and hyperthermia. In this paper I have utilized representative vasoactive drugs to demonstrate the various mechanisms via which tumour haemodynamics can be modified selectively. Chemicals which alter tumour blood flow by changing blood viscosity are also discussed. Of particular interest are the calcium entry blockers, flunarizine and verapamil, which have been shown to increase tumour blood flow, tumour oxygenation, tumour radiation sensitivity and the cytotoxicity of chemotherapeutic agents. These encouraging research results provide compelling evidence that these two drugs may prove to be useful adjuvants for radiation therapy.
The feasibility of magnetic recording at 1 Terabit per square inch (2000)

This paper explores the feasibility of implementing conventional magnetic recording technology at densities up to one Terabit per square inch. The key limiting physical factor is the superparamagnetic effect (thermal stability) in the recording medium. Ambient thermal energy can cause the magnetic signals to decay. The requirement for thermal stability over periods of years dictates a lower limit to the size of magnetic grains (switching units) in the recording medium. To achieve the highest areal densities, it will be necessary to use a magnetic recording configuration capable of writing and storing data on very small magnetic grains together with a signal processing system capable of recovering data reliably when each bit is recorded on very few such grains. In addition to these physical effects, there are a number of practical engineering factors that must be considered: tolerances on the head geometry, reliability of head-disk interface, track-following accuracy. In an example system, we use a perpendicular recording configuration since it appears to offer some advantage in terms of maximizing the number of stable magnetic grains per unit area. The readback signals are processed by equalization to a simple binary eye followed by soft detection of a low-rate simple parity check code. The example system approaches a density of 1 Terabit per square inch and allows 3 dB of margin against thermal decay, adjacent track interference, etc.
Acceptance Criteria for Heat Recovery Steam Generators Behind Gas Turbines (1986)

The design of a Heat Recovery Steam Generator behind a gas turbine depends upon various input parameters such as gas turbine exhaust flow, exhaust temperature, etc. Most of the input parameters are either measured with tolerances or calculated based on experimental correlations. The design of the heat recovery steam generator itself utilizes various correlations and empirical values. The errors or measurement tolerances in these variables affect the performance of the steam generator. This paper describes the various design parameters, the possible magnitude of errors in these parameters and the overall effect on the steam generator’s performance. By utilizing the information given in this paper, it is possible to develop a performance envelope based on the possible error margins of the input variables. The steam generator performance can be deemed acceptable if it is within this envelope.
The Enzymatic Oxidation of Ascorbic Acid in the Slime Mold, Physarum Polycephalum. (1955)

activity is found in each of the members of the cycle. The variability of the radioactivity in each of the TCA cycle acids is probably related to the variability in recovery, the rates of formation and degradation in the mitochondria, and the size of the acid pools.
“I am Finished” (2018)

Abstract Psalm 88 is unrelentingly dark; it is the only one of the lament psalms that does not turn at some point to praise. How are we to read it? First, primarily, we should read it christologically—as witness to the experience of Christ. Read in this way, the Psalms give us insight into the passion narrative. Second, we should ask how the text matters for us as Pentecostals. It calls us away from triumphalism, requiring us to take seriously the experience of god-forsakenness, and forcing us to reimagine our core beliefs and practices.
Application of Multiprotocol Medical Imaging Communications and an Extended DICOM WADO Service in a Teleradiology Architecture (2012)

Multiprotocol medical imaging communication through the Internet is more flexible than the tight DICOM transfers. This paper introduces a modular multiprotocol teleradiology architecture that integrates DICOM and common Internet services (based on web, FTP, and E-mail) into a unique operational domain. The extended WADO service (a web extension of DICOM) and the other proposed services allow access to all levels of the DICOM information hierarchy as opposed to solely Object level. A lightweight client site is considered adequate, because the server site of the architecture provides clients with service interfaces through the web as well as invulnerable space for temporary storage, called as User Domains, so that users fulfill their applications' tasks. The proposed teleradiology architecture is pilot implemented using mainly Java-based technologies and is evaluated by engineers in collaboration with doctors. The new architecture ensures flexibility in access, user mobility, and enhanced data security.
A BELIEF-DRIVEN DISCOVERY FRAMEWORK BASED ON DATA MONITORING AND TRIGGERING (1996)

A new knowledge-discovery framework, called Data Monitoring and Discovery Triggering (DMDT), is defined, where the user specifies monitors that âwatch" for significant changes to the data and changes to the user-defined system of beliefs. Once these changes are detected, knowledge discovery processes, in the form of data mining queries, are triggered. The proposed framework is the result of an observation, made in the previous work of the authors, that when changes to the user-defined beliefs occur, this means that, there are interesting patterns in the data. In this paper, we present an approach for finding these interesting patterns using data monitoring and belief-driven discovery techniques. Our approach is especially useful in those applications where data changes rapidly with time, as in some of the On-Line Transaction Processing (OLTP) systems. The proposed approach integrates active databases, data mining queries and subjective measures of interestingness based on user-defined systems of beliefs in a novel and synergetic way to yield a new type of data mining systems.
Fault emulation: A new methodology for fault grading (1999)

In this paper, we introduce a method that uses the field programmable gate array (FPGA)-based emulation system for fault grading. The real-time simulation capability of a hardware emulator could significantly improve the performance of fault grading, which is one of the most time consuming tasks in the circuit design and test process. We employ a serial fault emulation algorithm enhanced by two speed-up techniques. First, a set of independent faults can be injected and emulated at the same time. Second, multiple dependent faults can be simultaneously injected within a single FPGA-configuration by adding extra circuitry. Because the reconfiguration time of mapping the numerous faulty circuits into the FPGA's is pure overhead and could be the bottleneck of the entire process, using extra circuitry for injecting a large number of faults can reduce the number of FPGA-reconfigurations and, thus, improving the performance significantly. In addition, we address the issue of handling potentially detected faults in this hardware emulation environment by using the dual-railed logic. The performance estimation shows that this approach could be several orders of magnitude faster than the existing software approaches for large sequential designs.
Fabrication of micro-optical structures by applying negative tone hybrid glass materials and greyscale lithography (2002)

Direct lithographic patterning of lenslet arrays with lens sags up to 75 µm and opto-mechanical structures with thickness up to 118 µm is demonstrated, using negative tone hybrid glass materials and greyscale and binary photomasks. The hybrid glass material features a maximum extinction coefficient of 2.0×10−4 µm−1 between 450 and 1600 nm, a refractive index of 1.531 at 632.8 nm and an estimated Abbe number of 45. The patterned structures exhibit rms surface roughness between 10 to 45 nm.
Induction Machine Analysis for Arbitrary Displacement Between Multiple Winding Sets (1974)

The steps in t he applied voltages of a three-phase, inverter-induction motor drive system cause undesirable pulsations in motortor By using multiple inverters connected to a multiphase machine with appropriate winding displacements, significant improvement in system performance is possible. The winding displacements required, however, are not necessarily the symmetrical displacements used in standard multiphase machines. This paper sets forth an improved method for analyzing many types of unsymmetrical, as well as symmetrical, multiphase induction machines. The simulation of a 7.5-hp induction machine with two three-phase sets of stator windings fed from two six-step inverters illustrates the application of the method of analysis and shows how the machine torque characteristic may be improved by proper spacing of the winding sets.