gebhart/patrepeval huggingface dataset:
Virtual Anechoic Chamber using GPS Signals (2006)

Using GPS for animal tracking applications presents many significant challenges; not least the integration of the antenna in what is usually a miniature device. This paper describes a test setup that has been constructed to allow the user to perform something close to a full antenna gain pattern test using a simple turntable and relying on the GPS satellite motion to collect all angles required for a 3D gain plot. This has proved invaluable when predicting the expected performance of various antenna/packaging options for animal tags.
A hardware-secured credential repository for grid PKIs (2004)

Public key infrastructures suffer from usability and security problems associated with the request for and secure management of end user credentials. Online credential repositories provide mechanisms to ease these shortcomings but pose attractive targets for attacks due to the accumulation of credentials and the need for remote access to these credentials. Through the extension of an existing credential repository with a cryptographic coprocessor for secure storage of credentials an increase in the security of the service can be achieved. This higher security permits the use of online credential repositories with a wide variety of certificates without violating certification authority regulations. Also, the improved performance afforded by hardware support improves the scalability of a centralized credential storage.
An azimuth-Doppler-delay scattering function: definition and estimation (2002)

We define a generalized scattering function for the spatio-temporal propagation channel. The definition is free of the restrictive assumption that there is a finite number of scatterers. We derive the time-varying vector channel between the source and the array in a unified manner and define a correlation function and a power spectrum that incorporate the spatial parameter-directly giving rise to the new scattering function of the spatio-temporal channel. In practice, the scattering function can be estimated by applying a well-known non-parametric spectrum estimation method to data obtained from an appropriately designed channel sounding experiment. The estimator's performance is evaluated theoretically and by simulation.
A robust detection and isolation scheme for abrupt and incipient faults in nonlinear systems (2002)

This paper presents a robust fault diagnosis scheme for abrupt and incipient faults in nonlinear uncertain dynamic systems. A detection and approximation estimator is used for online health monitoring. Once a fault is detected, a bank of isolation estimators is activated for the purpose of fault isolation. A key design issue of the proposed fault isolation scheme is the adaptive residual threshold associated with each isolation estimator. A fault that has occurred can be isolated if the residual associated with the matched isolation estimator remains below its corresponding adaptive threshold, whereas at least one of the components of the residuals associated with all the other estimators exceeds its threshold at some finite time. Based on the class of nonlinear uncertain systems under consideration, an isolation decision scheme is devised and fault isolability conditions are given, characterizing the class of nonlinear faults that are isolable by the robust fault isolation scheme. The nonconservativeness of the fault isolability conditions is illustrated by deriving a subclass of nonlinear systems and of faults for which these conditions are also necessary for fault isolability. Moreover, the analysis of the proposed fault isolation scheme provides rigorous analytical results concerning the fault isolation time. Two simulation examples are given to show the effectiveness of the fault diagnosis methodology.
Nanoparticles for multifunctional drug delivery systems (2007)

Multifunctional drug delivery systems incorporated with stimuli-sensitive drug release, magnetic nanoparticles and magnetic resonance (MR) T2 contrast agents is attracting increasing attention recently. In this thesis, works on polymer nanospheres response to temperature change, superparamagnetic iron oxide nanoparticles (SPION)/polymeric composite materials for MR imaging contrast agents are summarized. A “shell-in-shell” polymeric structure has been constructed through a “modified double-emulsion method”. Thermosensitive inner shell is comprised of poly(N-isopropylacrylamide) which undergoes phase transition at body temperature. Such a feature could facilitate drug release at an elevated temperature upon administration. Furthermore, the dual-shell structure is covered by a layer of gold nanoparticles. According to the cytotoxicity tests, the biocompatibility is shown to be enhanced due to the layer of gold. SPION have been prepared using a high temperature decomposition method. Particle growth of SPION is monitored by transmission electron microscope and synchrotron X-ray diffraction. Poly(L,L-lactide)@SPION (PLLA@SPION) composite particles have been prepared through surface-initiated ring-opening polymerization which has been developed in our lab. For biomedical applications, it is essential to transfer the particles to physiological solutions from organic solutions. Phase transfer of SPION has been carried out by utilizing small molecules. Stability at the neutral pH is of large concern for such transfer systems. A novel phase transfer agent, Pluronic F127 (PF127), a triblock copolymer has been applied and the stability of the aqueous PF127@oleic acid (OA)@SPION solution has been greatly enhanced over a broad pH range. Most interestingly, PF127@OA@SPION show remarkable efficacy as T2 contrast agents as indicated by relaxometric measurements compared with commercially available products.
Evolution of DNA sequence specificity in type I restriction enzymes (1988)

Conference Article| December 01 1988 Evolution of DNA sequence specificity in type I restriction enzymes CLIVE PRICE; CLIVE PRICE 1Department of Microbiology, Biozentrum, Basel University, Klingelbergstrasse 70, CH-4056 Basel, Switzerland Search for other works by this author on: This Site PubMed Google Scholar THOMAS A. BICKLE THOMAS A. BICKLE 1Department of Microbiology, Biozentrum, Basel University, Klingelbergstrasse 70, CH-4056 Basel, Switzerland Search for other works by this author on: This Site PubMed Google Scholar Author and article information Publisher: Portland Press Ltd Received: June 17 1987 Online ISSN: 1470-8752 Print ISSN: 0300-5127 © 1988 Biochemical Society1988 Biochem Soc Trans (1988) 16 (6): 942–943. https://doi.org/10.1042/bst0160942 Article history Received: June 17 1987 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Facebook Twitter LinkedIn Email Cite Icon Cite Get Permissions Citation CLIVE PRICE, THOMAS A. BICKLE; Evolution of DNA sequence specificity in type I restriction enzymes. Biochem Soc Trans 1 December 1988; 16 (6): 942–943. doi: https://doi.org/10.1042/bst0160942 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsBiochemical Society Transactions Search Advanced Search This content is only available as a PDF. © 1988 Biochemical Society1988 Article PDF first page preview Close Modal You do not currently have access to this content.
A silicon bipolar 4-bit 1-Gsample/s full Nyquist A/D converter (1988)

A four-bit silicon bipolar analog-to-digital converter (ADC) which is operational at the full Nyquist input frequency up to 1 Gsample/s (Gs/s) is discussed. The effective bit number at 1 Gs/s reduces to 3.5 bits on Nyquist conditions. The 3-dB large-signal analog bandwidth is 800 MHz and the maximum sampling rate reaches 2 Gs/s and beyond. The converter is built up by stacking of two three-bit subcircuits. The ADC architecture relies on a balanced structure mixing conventional flash-converter elements with analog encoding. Total power consumption is 2.4 W. Standard silicon bipolar technology is used without self-alignment.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
A Comparison of Endogenous Development of Three Isolates of <i>Cryptosporidium</i> in Suckling Mice<sup>1</sup> (1986)

Suckling mice were used as a model host to compare the endogenous development of three different isolates of Cryptosporidium: one from a naturally infected calf, one from an immunocompetent human with a short-term diarrheal illness, and one from a patient with acquired immune deficiency syndrome (AIDS) and persistent, life-threatening, gastrointestinal cryptosporidiosis. After oral inoculation of mice with oocysts, no differences were noted among developmental stages of the three isolates in their sites of infection, times of appearance, and duration, morphology, and fine structure. Sporozoites excysted within the lumen of the duodenum and ileum, penetrated into the microvillous region of villous enterocytes, and developed into type I meronts with six or eight merozoites. Type I merozoites penetrated enterocytes and underwent cyclic development as type I meronts or they became type II meronts with four merozoites. Type II merozoites did not exhibit cyclic development but developed directly into sexual forms. Microgamonts produced approximately 16 small, bullet-shaped microgametes, which were observed attaching to and penetrating macrogametes. Approximately 80% of the oocysts observed in enterocytes had a thick, two-layered wall. After sporulating within the parasitophorous vacuole, these thick-walled oocysts passed through the gut unaltered and were the resistant forms that transmitted the infection to a new host. Approximately 20% of the oocysts in enterocytes consisted of four sporozoites and a residuum surrounded only by a single oocyst membrane that ruptured soon after the parasite was released from the host cell. The presence of thin-walled, autoinfective oocysts and recycling of type I meronts may explain why a small oral inoculum can produce an overwhelming infection in a suitable host and why immune deficient persons can have persistent, life-threatening cryptosporidiosis in the absence of repeated oral exposure to thick-walled oocysts.
Fabrication of all-polymer freestanding waveguides (2003)

Optical waveguides are used in a wide range of scientific and technological applications. In this paper we focus on the application of waveguides as biosensors with the specific aim of implementing a novel waveguide design for a sensor with improved sensitivity to sub-micron as well as micron-scale analyte entities. The realization of this goal requires ways of fabricating freely suspended polymer thin films of well-defined thickness and having a nanometer scale deep optical grating in their surface. We demonstrate several easy pathways for making such a waveguide module through the combination of advanced polymer handling methodologies based on soft lithography approaches. The resulting waveguide modules are capable of guiding light coupled into the waveguide through its integrated grating coupler. We believe that the presented fabrication methodologies may be of general utility for microfabrication in polymers and that the improved waveguide structures may also find wider use in integrated optics.
Failure Detection in Large-Scale Internet Services by Principal Subspace Mapping (2007)

Fast and accurate failure detection is becoming essential in managing large scale Internet services. This paper proposes a novel detection approach based on the subspace mapping between system inputs and internal measurements. By exploring these contextual dependencies, our detector can initiate repair actions accurately, increasing the availability of system. While a classical statistical method, the canonical correlation analysis (CCA), is presented in the paper to achieve subspace mapping, we also propose a more advanced technique, the principal canonical correlation analysis (PCCA), to improve the performance of CCA based detector. PCCA extracts a principal subspace from internal measurements that is not only highly correlated with the inputs, but also a significant representative of original measurements. Experimental results on a J2EE based web application demonstrate that such property of PCCA is especially beneficial to failure detection tasks.
Application of NbN films to the development of very high field superconducting magnets (1984)

We report the preliminary results of a program recently begun at Argonne National Laboratory to demonstrate the feasibility of using niobium nitride (NbN) films as practical high field superconductors. Films of varying thicknesses (2-9 μm) have been deposited on sapphire and Hastelloy substrates, using d.c. magnetron sputtering. The superconducting transition temperatures T c of these films range from 12-15 K. Using the WHH extrapolation, upper critical fields H c2 (O) up to 36 T in the parallel direction and 43T in the perpendicular direction were obtained. Critical current densities J c (H,4.2 K) were \approx 1\times10^{4} A/cm2at 20 T in both the parallel and perpendicular directions. The preliminary results from novel sample preparation technique for TEM studies of film cross-sections is briefly described. This technique shows the variation in film structure as a function of distance from the substrate.
Electronic structure and spectroscopy of nickel(II), palladium(II), and platinum(II) acetylacetonate complexes (1993)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectronic structure and spectroscopy of nickel(II), palladium(II), and platinum(II) acetylacetonate complexesFrederick D. Lewis, Gwen D. Salvi, David R. Kanis, and Mark A. RatnerCite this: Inorg. Chem. 1993, 32, 7, 1251–1258Publication Date (Print):March 1, 1993Publication History Published online1 May 2002Published inissue 1 March 1993https://pubs.acs.org/doi/10.1021/ic00059a037https://doi.org/10.1021/ic00059a037research-articleACS PublicationsRequest reuse permissionsArticle Views749Altmetric-Citations51LEARN 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-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Two-Dimensional Magnetic Recording at 10 $\hbox{Tbits/in}^{2}$ (2012)

A shingled recording head design is proposed that makes use of a saturation magnetization gradient to focus flux into the corner of the writing pole. This design yields field gradients of 800 Oe/nm and can write more than 2.5 Tbits/in <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> of user data onto a 10 nm thick ECC recording layer with 6 nm Voronoi grains. Maximum user densities are predicted to be over 4.66 Tbits/in <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> with 8 nm grains and 12 Tbits/in <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> with 5 nm grains using a perfect read and write scheme at a 1:1 bit aspect ratio. For read back, three contact dual differential MR head designs that have two independent free layers with magnetization pointing oppositely are examined for the purpose of extending magnetoresistive technology. The differential head shows good cross track resolution that will be advantageous at the low bit aspect ratios likely for two-dimensional magnetic recording. Results show that an array of three dual differential heads can successfully resolve an 8 nm track surrounded by adjacent tracks that have pseudo random bit sequences written to them, even though each head is wider than the track.
Legal Research in Asian Mass Media: An Overview of Its Substance and Procedure (2004)

The continuing economic and political transformation of Asian countries has been inexorable since the mid-1980s. John A. Lent, a long-time Asian media observer, stated: “Today, Asians are generally more politically vigilant and less apt to tolerate strongman rule than before.”1 A good illustration of democratic transitions in Asia is the expansion of political rights and civil liberties. Freedom of the press has continually increased in many parts of Asia. Freedom House’s survey of press freedom reported in 2003: “The Asia Pacific region … exhibited a relatively high level of press freedom, with 18 countries (46 percent) rated Free, 7 (18 percent) rated Partly Free, and 14 (36 percent) rated Not Free.”2 Now, some are concerned about press irresponsibility rather than the lack of press freedom: “Media freedom is available to more people in Asia today than 15 years ago, and media responsibility and ethics have become a big concern in new democracies.”3
The Interplay of Host Autophagy and Eukaryotic Pathogens (2018)

For intracellular pathogens, host cells provide a replicative niche, but are also armed with innate defense mechanisms to combat the intruder. Co-evolution of host and pathogens has produced a complex interplay of host-pathogen interactions during infection, with autophagy emerging as a key player in the recent years. Host autophagy as a degradative process is a significant hindrance to intracellular growth of the pathogens, but also can be subverted by the pathogens to provide support such as nutrients. While the role of host cell autophagy in the pathogenesis mechanisms of several bacterial and viral pathogens have been extensively studied, less is known for eukaryotic pathogens. In this review, we focus on the interplay of host autophagy with the eukaryotic pathogens <i>Plasmodium spp, Toxoplasma, Leishmania spp</i> and the fungal pathogens <i>Candida albicans, Aspergillus fumigatus</i> and <i>Cryptococcus neoformans</i>. The differences between these eukaryotic pathogens in terms of the host cell types they infect, infective strategies and the host responses required to defend against them provide an interesting insight into how they respond to and interact with host cell autophagy. Due to the ability to infect multiple host species and cell types during the course of their usually complex lifestyles, autophagy plays divergent roles even for the same pathogen. The scenario is further compounded since many of the eukaryotic pathogens have their own sets of either complete or partial autophagy machinery. Eukaryotic pathogen-autophagy interplay is thus a complex relationship with many novel insights for the basic understanding of autophagy, and potential for clinical relevance.
Ergosterol-Induced Sesquiterpenoid Synthesis in Tobacco Cells (2012)

Plants have the ability to continuously respond to microbial signals in their environment. One of these stimuli is a steroid from fungal membranes, ergosterol, which does not occur in plants, but acts as a pathogen-associated molecular pattern molecule to trigger defence mechanisms. Here we investigated the effect of ergosterol on the secondary metabolites in tobacco (Nicotiana tabacum) cells by profiling the induced sesquiterpenoids. Suspensions of tobacco cells were treated with different concentrations (0-1,000 nM) of ergosterol and incubated for different time periods (0-24 h). Metabolites were extracted with a selective dispersive liquid-liquid micro-extraction method. Thin layer chromatography was used as a screening method for identification of sesquiterpenoids in tobacco extracts. Liquid chromatography coupled to mass spectrometry was used for quantitative and qualitative analyses. The results showed that ergosterol triggered differential changes in the metabolome of tobacco cells, leading to variation in the biosynthesis of secondary metabolites. Metabolomic analysis through principal component analysis-scores plots revealed clusters of sample replicates for ergosterol treatments of 0, 50, 150, 300 and 1,000 nM and time-dependent variation at 0, 6, 12, 18 and 24 h. Five bicyclic sesquiterpenoid phytoalexins, capsidiol, lubimin, rishitin, solavetivone and phytuberin, were identified as being ergosterol-induced, contributing to the altered metabolome.
Abnormal Bone Histology in Idiopathic Hypercalciuria * (1980)

Bone histology was evaluated in iliac creast biopsies of 15 patients with idiopathic hypercalciuria of the hyperabsorptive type and recurrent calcium oxalate stone formation. The biopsies were studied using quantitative histomorphometric analysis of undecalcified sections and fluorescent microscopy after double tetracycline labeling. Uring calcium and cAMP excretion were measured under basal conditions and after oral administration of calcium phosphate. Absorptive hypercalciuria was defined as a urinary excretion of calcium of more than 15 meq/24 h and/or a urinary ratio of Ca to Cr of more than 0.2, with a fall in the Ca to Cr ratio of more than 40% after the administration of oral cellulose phosphate. Osteoclastic bone resorption was normal or low in all patients and did not show any recognizable correlation with urinary calcium or urinary cAMP. All but one of the patients showed an increase in the fraction of inactive osteoid. Total osteoid was increased in 60% of the patients. Osteoblastic activity was significantly lower in the patient than in the control subjects. The fraction of mineralizing osteoid seams (i.e. seams with a tetracycline double labeling pattern), was diminished in all patients and the mean rate of apposition of bone matrix was decreased. These findings point to a diminished amount of bone matrix produced by individual osteoblasts and to a delay or cessation of terminal (secondary) mineralization of osteoid seams.
Design of a buffer and channel adaptive LTE semi-persistent scheduler for M2M communications (2015)

One of the major limitations of the LTE system in context of Machine-to-Machine (M2M) communications is the excessive control signalling required for dynamic scheduling of radio resources. Although the queue awareness and link adaptation features of the dynamic scheduler can be very beneficial for M2M traffic as well, these two properties come at a cost of significant control overhead. In this paper, we propose an adaptive semi-persistent LTE uplink scheduler which reduces the control overhead by a significant level and utilizes the uplink capacity efficiently to satisfy the Quality of Service (QoS) requirements of M2M traffic. The concept of Semi-Persistent Scheduling (SPS) has already been implemented for Voice over IP (VoIP) service in the LTE standard. However, we have further developed this into an adaptive SPS scheme which can adapt to the sudden bursts of stochastic M2M traffic flow by utilizing the device buffer information as well as respond to the channel fluctuations caused by fading while satisfying the M2M packet delay constraints. The performance of the proposed adaptive SPS scheme has been compared to an LTE dynamic scheduler using the OPNET simulation software for fading channels. The simulation results demonstrate the adaptive SPS scheme to outperform the dynamic scheduler in terms of both control channel utilization and satisfying QoS requirements of M2M traffic.