gebhart/patrepeval huggingface dataset:
Monitoring and Fault Diagnosis of Multiconverter Systems in Hybrid Electric Vehicles (2006)

Advancements in high-power semiconductor technology have opened new avenues for application of power electronics converters in safety critical applications such as in hybrid vehicle automotive power systems. This paper discusses the use of statistical moments to detect and identify faults. Existing system current and voltage sensors are used without the need for any additional sensors. The technique not only detects system malfunction but also provides information on the device under fault and the nature of the fault. An accurate knowledge of the same will allow appropriate action to be taken to avoid propagation of fault that may lead to catastrophic failure
In Situ UV Disinfection of a Waveguide-Based Photobioreactor (2014)

Compact waveguide-based photobioreactors with high surface area-to-volume ratios and optimum light-management strategies have been developed to achieve high volumetric productivities within algal cultures. The light-managing strategies have focused on optimizing sunlight collection, sunlight filtration, and light delivery throughout the entire bioreactor volume by using light-directing waveguides. In addition to delivering broad-spectrum or monochromatic light for algal growth, these systems present an opportunity for advances in photobioreactor disinfection by using germicidal ultraviolet (UV) light. Here, we investigated the efficacy of in situ, nonchemical UV treatment to disinfect a heterotrophic contaminant in a compact photobioreactor. We maintained a >99% pure culture of Synechocystis sp. PCC 6803 for an operating period exceeding 3 weeks following UV treatment of an intentionally contaminated waveguide photobioreactor. Without UV treatment, the culture became contaminated within only a few days (control). We developed a theoretical model to predict disinfection efficiency based on operational parameters and bioreactor geometry, and we verified it with experimental results to predict the disinfection efficiency of a Bacillus subtilis spore culture.
Palladium-Catalyzed Oxidative O–H/N–H Carbonylation of Hydrazides: Access to Substituted 1,3,4-Oxadiazole-2(3<i>H</i>)-ones (2015)

A novel palladium-catalyzed oxidative annulation reaction for the C-O, C-N bond formations is developed. The intramolecular cyclocarbonylation provides an efficient and direct approach for the construction of valuable 1,3,4-oxadiazole-2(3H)-ones and their derivatives. The reaction also facilitated the convenient synthesis of BMS-191011, an opener of the cloned large-conductance Ca(2+)-activated potassium channel, providing an attractive method for medicinal chemistry.
Efficiency and stability of the DSBGK method (2012)

Recently, the DSBGK method (Note: the original name DS-BGK is changed to DSBGK for simplicity) was proposed to reduce the stochastic noise in simulating rarefied gas flows at low velocity. Its total computational time is almost independent of the magnitude of deviation from equilibrium state. It was verified by the DSMC method in different benchmark problems over a wide range of Kn number. Some simulation results of the closed lid-driven cavity flow, thermal transpiration flow and the open channel flow by the DSBGK method are given here to show its efficiency and numerical stability. In closed problems, the density distribution is subject to unphysical fluctuation due to the absence of density constraint at the boundary. Thus, many simulated molecules are employed by DSBGK simulations to improve the stability and reduce the magnitude of fluctuation. This increases the memory usage remarkably but has small influence to the efficiency of DSBGK simulations. In open problems, the DSBGK simulation remains stable when using about 10 simulated molecules per cell because the fixed number densities at open boundaries eliminate the unphysical fluctuation. Small modification to the CLL reflection model is introduced to further improve the efficiency slightly.
Comparison of Cross-Linked and Non-Cross-Linked Porcine Acellular Dermal Matrices for Ventral Hernia Repair (2010)

Non-cross-linked PADM is rapidly infiltrated with host cells and vessels; cross-linked PADM becomes encapsulated. Non-cross-linked PADM causes weaker adhesions to repair sites while increasing the mechanical strength of the bioprosthesis-musculofascia interface at early timepoints. Non-cross-linked PADM may have early clinical advantages over cross-linked PADM for bioprosthetic abdominal wall reconstruction.
Strength, fracture and erosion properties of CVD diamond (1993)

Abstract Theoretical and experimental studies have been made on the effect of high modulus coatings on the stress fields generated by indentation and impact onto a flat half-space. The theoretical work used finite-element techniques and it shows that a high modulus coating can have a significant effect on the maximum tensile stresses generated in the substrate providing there is a good bond at the coating/substrate interface. Because it is technically difficult to deposit layers of more than a few micrometres thickness without residual stresses causing debonding, double and multilayer systems have also been examined theoretically. A variety of techniques have been used to determine the strength, modulus, expansion coefficient, thermal conductivity and other physical properties of chemical vapour deposition CVD diamond layers. These are briefly reviewed and data from our own studies using such techniques as the vibrating reed, bulge test and indentation are present. The erosion properties of both CVD coated substrates and CVD free-standing layers are presented for both liquid drop and solid particle erosion. Finally, a study has also been made of the frictional properties of various CVD diamond layers in a range of environments; data are compared with our earlier work on bulk diamond.
Excavations at Koongine Cave: Lithics & Land-use in the Terminal Pleistocene & Holocene of South Australia (2001)

Koongine is a sizeable limestone cave set in a low ridge some 4 km from the sea in the lower South-east of South Australia. It was used for about 2000 years at the transition from the Pleistocene to Holocene, and then again during the last millennium. The sequence at this site exposes issues of the appropriate scale and form of explanation for changes in site use. The stratified deposits of stone artefacts provide an opportunity to define for the first time the nature of the ‘Gambieran’ Industry. This spatially and temporally restricted industry characterised by large convex scrapers made on large, often asymmetrical, flakes is otherwise known mainly from older surface collections. The formal definition of this local industry adds to the growing evidence of considerable variation in the earlier stone tools of Australia, and provides an additional basis for rejecting the concept of a widespread Core Tool and Scraper Tradition, and replacing it with a model which recognises a mosaic of different tool-making traditions embedded in local social, economic, and technological contexts.
An electrochemical immunosensor using ferrocenyl-tethered dendrimer (2005)

We report here an enzyme-amplified, sandwich-type immunosensor for detecting the biospecific interaction between an antibody and antigen using redox mediation. We employed biotin/anti-biotin IgG as a model immunosensing pair. Partially ferrocenyl-tethered dendrimer (Fc-D), whose ferrocene moiety acts as a redox mediator, was immobilized to the electrode surface by covalent binding between the dendrimer amines and the carboxylic acids of a self-assembled monolayer. The unreacted amines of the immobilized Fc-D were modified with biotin groups to allow the specific binding of goat anti-biotin IgG. Rabbit anti-goat IgG-conjugated alkaline phosphatase was bound to goat anti-biotin IgG to catalyze conversion of p-aminophenyl phosphate monohydrate to p-aminophenol. This product is oxidized to quinoimide by the reduction of ferrocenium back to ferrocene, producing an electrocatalytic anodic current. Cyclic voltammograms and surface plasmon resonance experiments showed that the binding of nonspecific proteins is not significant on the biotinylated Fc-D surface. We also examined the change in peak current according to the concentration of anti-biotin IgG and found that the detection range of this immunosensing scheme is between 0.1 and 30 microg mL(-1).
Interaction between the P14 Residue and Strand 2 of β-Sheet B Is Critical for Reactive Center Loop Insertion in Plasminogen Activator Inhibitor-2 (2001)

The molecular interactions driving reactive center loop (RCL) insertion are of considerable interest in gaining a better understanding of the serpin inhibitory mechanism. Previous studies have suggested that interactions in the proximal hinge/breach region may be critical determinants of RCL insertion in serpins. In this study, conformational and functional changes in plasminogen activator inhibitor-2 (PAI-2) following incubation with a panel of synthetic RCL peptides indicated that the P14 residue is critical for RCL insertion, and hence inhibitory activity, in PAI-2. Only RCL peptides with a P14 threonine were able to induce the stressed to relaxed transition and abolish inhibitory activity in PAI-2, indicating that RCL insertion into beta-sheet A of PAI-2 is dependent upon this residue. The recently solved crystal structure of relaxed PAI-2 (PAI-2.RCL peptide complex) allowed detailed analysis of molecular interactions involving P14 related to RCL insertion. Of most interest is the rearrangement of hydrogen bonding around the breach region that accompanies the stressed to relaxed transition, in particular the formation of a side chain hydrogen bond between the threonine at P14 and an adjacent tyrosine on strand 2 of beta-sheet B in relaxed PAI-2. Structural alignment of known serpin sequences showed that this pairing (or the equivalent serine/threonine pairing) is highly conserved ( approximately 87%) in inhibitory serpins and may represent a general structural basis for serpin inhibitory activity.
An Experimental Study of Impingement on Roughened Airfoil Leading-Edge Walls With Film Holes (2001)

Airfoil leading-edge surfaces in state-of-the-art gas turbines, being exposed to very high gas temperatures, are often life-limiting locations and require complex cooling schemes for robust designs. A combination of convection and film cooling is used in conventional designs to maintain leading-edge metal temperatures at levels consistent with airfoil life requirements. Compatible with the external contour of the airfoil at the leading edge, the leading-edge cooling cavities often have complex cross-sectional shapes. Furthermore, to enhance the heat transfer coefficient in these cavities, they are often roughened on three walls with ribs of different geometries. The cooling flow for these geometries usually enters the cavity from the airfoil root and flows radially to the airfoil tip or, in the more advanced designs, enters the leading edge cavity from the adjacent cavity through a series of crossover holes in the wall separating the two cavities. In the latter case, the crossover jets impinge on a smooth leading-edge wall and exit through the showerhead film holes, gill film holes on the pressure and suction sides, and, in some cases, form a crossflow in the leading-edge cavity, which is ejected through the airfoil tip hole. The main objective of this investigation was to study the effects that film holes on the target surface have on the impingement heat transfer coefficient. Available data in the open literature are mostly for impingement on a flat smooth surface with no representation of the film holes. This investigation involved two new features used in airfoil leading-edge cooling, those being a curved and roughened target surface in conjunction with leading-edge row of film holes. Results of the crossover jets impinging on these leading-edge surface geometries with no film holes were reported by these authors previously. This paper reports experimental results of crossover jets impinging on those same geometries in the presence of film holes. The investigated surface geometries were smooth, roughened with large and small conical bumps as well as tapered radial ribs. A range of flow arrangements and jet Reynolds numbers were investigated, and the results were compared to those of the previous study where no film holes were present. It was concluded that the presence of leading-edge film holes along the leading edge enhances the internal impingement heat transfer coefficients significantly. The smaller conical bump geometry in this investigation produced impingement heat transfer coefficients up to 35 percent higher than those of the smooth target surface. When the contribution of the increased area in the overall heat transfer is taken into consideration, this same geometry for all flow cases as well as jet impingement distances Z/djet provides an increase in the heat removal from the target surface by as much as 95 percent when compared with the smooth target surface.
Exit from Pluripotency Is Gated by Intracellular Redistribution of the bHLH Transcription Factor Tfe3 (2013)

Factors that sustain self-renewal of mouse embryonic stem cells (ESCs) are well described. In contrast, the machinery regulating exit from pluripotency is ill defined. In a large-scale small interfering RNA (siRNA) screen, we found that knockdown of the tumor suppressors Folliculin (Flcn) and Tsc2 prevent ESC commitment. Tsc2 lies upstream of mammalian target of rapamycin (mTOR), whereas Flcn acts downstream and in parallel. Flcn with its interaction partners Fnip1 and Fnip2 drives differentiation by restricting nuclear localization and activity of the bHLH transcription factor Tfe3. Conversely, enforced nuclear Tfe3 enables ESCs to withstand differentiation conditions. Genome-wide location and functional analyses showed that Tfe3 directly integrates into the pluripotency circuitry through transcriptional regulation of Esrrb. These findings identify a cell-intrinsic rheostat for destabilizing ground-state pluripotency to allow lineage commitment. Congruently, stage-specific subcellular relocalization of Tfe3 suggests that Flcn-Fnip1/2 contributes to developmental progression of the pluripotent epiblast in vivo.
Circuits for energy harvesting sensor signal processing (2006)

The recent explosion in capability of embedded and portable electronics has not been matched by battery technology. The slow growth of battery energy density has limited device lifetime and added weight and volume. Passive energy harvesting from solar radiation, thermal sources, or mechanical vibration has potentially wide application in wearable and embedded sensors to complement batteries. The amount of energy from harvesting is typically small and highly variable, requiring circuits and architectures which are low power and can scale their power consumption with user requirements and available energy. We describe several circuit techniques for achieving these goals in signal processing applications for wireless sensor network nodes such as using Distributed Arithmetic to implement energy scalable signal processing algorithms. In addition, we propose increasing vibration energy harvesting efficiency by eliminating AC/DC conversion electronics, and have investigated self-timed circuits, power-on-reset circuitry, and memory for energy harvesting AC power supplies. These techniques can also be applied to energy harvesting from other sources. A chip will be fabricated to test the proposed circuits.
6A,6B-.beta.-Cyclodextrin-Hexasiloxane Copolymers: Enantiomeric Separations by a .beta.-Cyclodextrin-Containing Rotaxane Copolymer (1995)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT6A,6B-.beta.-Cyclodextrin-Hexasiloxane Copolymers: Enantiomeric Separations by a .beta.-Cyclodextrin-Containing Rotaxane CopolymerJerald S. Bradshaw, Zhen. Chen, Guoliang. Yi, Bryant E. Rossiter, Abdul. Malik, Dongjin. Pyo, Hao. Yun, Delbert R. Black, S. Scott. Zimmerman, and . et al.Cite this: Anal. Chem. 1995, 67, 23, 4437–4439Publication Date (Print):December 1, 1995Publication History Published online1 May 2002Published inissue 1 December 1995https://pubs.acs.org/doi/10.1021/ac00119a037https://doi.org/10.1021/ac00119a037research-articleACS PublicationsRequest reuse permissionsArticle Views149Altmetric-Citations16LEARN 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 optionsGet e-Alertsclose Get e-Alerts
Elementary school teachers' perception of desirable learning activities: a Singaporean perspective (2001)

A total 209 teachers (103 initial and 106 experienced) of various elementary schools in Singapore rated the perceived children's desirable learning activities on a five-point Likert scale. Four factors emerged (50.5 per cent variance): conventional learning activities; motivational activities; student-directed activities that foster independence and collaboration; and teacher-directed group activities. Two clusters were formed: motivational learning activities, and all kinds of learning activities. About half of the initial teachers belonged to each of the clusters, while the majority of experienced teachers (83 per cent) belonged to the latter cluster. Multivariate analysis of variance on the items yielded a main significant effect for initial and experienced teachers. Implications of the study for Singaporean classroom learning are presented.
Jet-Cooled Thermal Modulator for Comprehensive Multidimensional Gas Chromatography (2000)

A jet of cool gas is used to locally cool a section of modulator tube in the presence of the stirred oven bath of a GC×GC instrument. Local cooling decouples the temperature of the modulator tube from that of the first dimension column, which was 100 meters long. Overall resolution of the GC×GC experiment was improved as a result. Another consequence of the jet-cooled thermal modulation structure is the elimination of moving parts in the GC oven. By pulsing cold and hot jets of gas onto a modulator tube with solenoid valves, two stage thermal modulation can be obtained without the complexity of moving parts in the vicinity of the capillary columns.
Over enkele grondwettelijke problemen, gerezen tijdens de tweede wereldoorlog (1983)

info:eu-repo/semantics/published
Transfer Learning with Neural AutoML (2018)

We reduce the computational cost of Neural AutoML with transfer learning. AutoML relieves human effort by automating the design of ML algorithms. Neural AutoML has become popular for the design of deep learning architectures, however, this method has a high computation cost. To address this we propose Transfer Neural AutoML that uses knowledge from prior tasks to speed up network design. We extend RL-based architecture search methods to support parallel training on multiple tasks and then transfer the search strategy to new tasks. On language and image classification tasks, Transfer Neural AutoML reduces convergence time over single-task training by over an order of magnitude on many tasks.
Avian Semen Cryopreservation: What Are the Biological Challenges? (2006)

The value of the ability to cryopreserve and store germplasm has long been recognized for indefinite preservation of genetic material, especially for at-risk populations. In contrast to domestic livestock species, cryogenic storage of poultry semen is not reliable enough for germplasm preservation. The relatively low fertilizing ability of frozen/thawed poultry sperm most likely results from physiological sensitivity to the cryogenic process coupled with the requirement for prolonged sperm functionality in the hen reproductive tract; however, the concept of defining these physiological challenges has been underemphasized. For example, alterations in membrane carbohydrate content and diminished energy production in frozen/thawed sperm have important implications for successful gamete interaction. Recent data suggests that both glycoconjugate content and adenosine triphosphate (ATP) generation are affected by cryopreservation. Moreover, susceptibility to the cryogenic process seems to vary among lines and strains of birds, as illustrated by line-specific differences in ATP concentrations of frozen/thawed sperm from pedigreed commercial layers. Research based on biochemical and molecular comparisons of sperm among lines may lead to identification of factors that influence the freezability of poultry semen.
Improved autonomous load handling with stereo cameras (2015)

We present newly added modules for our autonomous load handling system. The stereo camera system provides information about the scene in front of the automated forklift. A new alternative module for pallet detection is described. Several processing modules for unloading operations are also presented. Our system is evaluated by means of detection rate and by performing field tests. The tests show that it is capable of providing a sufficiently accurate position of the pallets in order to perform loading and unloading operations in multiple scenarios.
Model-based reuse repositories-concepts and experience (2002)

Reuse repositories provide a wide range of assets that software engineers can use in developing systems to reduce the need for continual development of components that provide the same functionality. Most current reuse repositories are component based; they provide a catalogue of software components categorized by some scheme. An alternative to the component based repository is the model based repository, which provides a model of information built from the analysis of existing systems within the same domain. This domain model provides the basis for a domain specific software architecture (DSSA), which is a generic solution to the software requirements captured in domain analysis. The DSSA is used as a framework for organizing repository components. This organization includes a mapping between the requirements in the domain model and the specifications in the DSSA. The paper details a conceptual approach to the creation of a model based repository and discusses the development of one such repository-the CARDS Command Center Library (CCL). It is shown how a domain model, a DSSA, and requirements traceability provide the foundation for a model based reuse repository with support for automated system development achieving high levels of reuse, including reuse of requirements and design information. A discussion of the CARDS CCL shows how CARDS has followed this conceptual approach within the USAF Command Center domain.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>