gebhart/patrepeval huggingface dataset:
Technical Issues of Forensic Investigations in Cloud Computing Environments (2011)

Cloud Computing is arguably one of the most discussed information technologies today. It presents many promising technological and economical opportunities. However, many customers remain reluctant to move their business IT infrastructure completely to the cloud. One of their main concerns is Cloud Security and the threat of the unknown. Cloud Service Providers (CSP) encourage this perception by not letting their customers see what is behind their virtual curtain. A seldomly discussed, but in this regard highly relevant open issue is the ability to perform digital investigations. This continues to fuel insecurity on the sides of both providers and customers. Cloud Forensics constitutes a new and disruptive challenge for investigators. Due to the decentralized nature of data processing in the cloud, traditional approaches to evidence collection and recovery are no longer practical. This paper focuses on the technical aspects of digital forensics in distributed cloud environments. We contribute by assessing whether it is possible for the customer of cloud computing services to perform a traditional digital investigation from a technical point of view. Furthermore we discuss possible solutions and possible new methodologies helping customers to perform such investigations.
Advanced handoff control using fuzzy inference for indoor radio system (2003)

An autonomous learning procedure fir cell boundaries is reported, and advanced handoff controls making use of the learned cell boundary are proposed. The cell boundary is learned by moving a mobile set, which has a detector showing equal signal strength along the boundary, after all the base stations have been installed. Handoff control using reliable cell boundaries can omit the exceptional transactions caused by multipath fading. Advanced controls, soft handoff without intermittence, and its extension by means of fuzzy decisions are described.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Nonlinear Photonic Crystals as a Source of Entangled Photons (2004)

Nonlinear photonic crystals can be used to provide phase matching for frequency conversion in optically isotropic materials. The phase-matching mechanism proposed here is a combination of form birefringence and phase velocity dispersion in a periodic structure. Since the phase matching relies on the geometry of the photonic crystal, it becomes possible to use highly nonlinear materials. This is illustrated considering a one-dimensional periodic Al0.4Ga0.6As/air structure for the generation of 1.5 microm light. We show that phase-matching conditions used in schemes to create entangled photon pairs can be achieved in photonic crystals.
Interpixel Capacitive Coupling (2009)

Interpixel coupling (IPC) is an electronic crosstalk where a pixel couples signal charges to its neighbors capacitively. It is a deterministic process, whereas diffusion crosstalk is stochastic. It will smooth normal image signal as well as Poisson noise. As a result, the conversion gain will be underestimated by the photon transfer method. However, the capacitive coupling has not received much attention until Andrew Moore and Gert Finger recently studied its potential effect on the measurement of responsive detective efficiency of image detector arrays in both theory and observation. This thesis continues to investigate this electronic effect. The potential impact of capacitive coupling on the photometric measurement is first simulated. Methods based on inverse filer and Wiener filer are tested to correct this coupling impact. It appears that the signal loss can be restored to reasonable accuracy by applying the pseudo-inverse filter, provided that we have full knowledge of interpixel coupling. New methods to measure the IPC value are proposed and tested based on the cosmic ray events and hot pixels, where the dark frame data sampled up-the-ramp are used. By these two methods, the coupling effect of a hybrid HgCdTe array is studied. The coupling magnitude is measured at different detector temperatures. It shows that the IPC magnitude decreases with increasing temperature. The IPC dependencies on the center pixel intensity and background are also checked: the magnitude becomes smaller when the target pixel event gets stronger, while the trend reverses with the change of background level. Finally, the possible impact on read noise, i.e. noise correlation with adjacent pixels, is examined based on the dark frames from the infrared HgCdTe and Si-PIN arrays. The initial results indicate that the read noise component is not affected by the capacitive coupling between pixels, in the sense that read noise is uncorrelated to neighboring pixels, as compared to the neighbor-correlated Poisson noise due to interpixel capacitance.
Costimulation of T cell receptor‐triggered IL‐2 production by Jurkat T cells via fibroblast growth factor receptor 1 upon its engagement by CD56 (2002)

Recent studies have demonstrated that neural cell adhesion molecule (NCAM) is involved in multiple adhesive interactions with several different classes of ligands on the cell surface and in the extracellular matrix. One of these ligands is fibroblast growth factor receptor (FGFR) that is expressed on neural cells. While it is known that CD56 is a molecular isoform of NCAM expressed on human NK cells and a subset of T cells, it remains poorly characterized, with its ligand unidentified. Therefore, we were prompted to examine if CD56 molecules on NK cells interact with FGFR expressed on T cells. We demonstrate that ligation of FGFR1 beta on J.C2-14 Jurkat T cells by CD56 on fixed NK-92 cells costimulates TCR/CD3-triggered IL-2 production. CD56-binding mAbs inhibited the costimulatory effect of NK-92 cells in 50-75%. Flow cytometric analysis and cell adhesion assays showed that FGFR1 beta/Fc and FGFR2 beta/Fc chimeric proteins bind to NK-92 cells. The binding of FGFR1 beta/Fc protein to CD56 molecules was verified by immunoprecipitation of CD56 with anti-CD56 mAb followed by Western blotting with FGFR1 beta/Fc. These findings suggest that ligation of FGFR1 by CD56 may contribute to the interaction between NK cells and T cells that we have postulated in our previous studies.
Binary Toxin Production in <i>Clostridium difficile</i> Is Regulated by CdtR, a LytTR Family Response Regulator (2007)

Clostridium difficile binary toxin (CDT) is an actin-specific ADP-ribosyltransferase that is produced by various C. difficile isolates, including the "hypervirulent" NAP1/027 epidemic strains. In contrast to the two major toxins from C. difficile, toxin A and toxin B, little is known about the role of CDT in virulence or how C. difficile regulates its production. In this study we have shown that in addition to the cdtA and cdtB toxin structural genes, a functional cdt locus contains a third gene, here designated cdtR, which is predicted to encode a response regulator. By introducing functional binary toxin genes into cdtR(+) and cdtR-negative strains of C. difficile, it was established that the CdtR protein was required for optimal expression of binary toxin. Significantly increased expression of functional binary toxin was observed in the presence of a functional cdtR gene; an internal deletion within cdtR resulted in a reduction in binary toxin production to basal levels. Strains that did not carry intact cdtAB genes or cdtAB pseudogenes also did not have cdtR, with the entire cdt locus, or CdtLoc, being replaced by a conserved 68-bp sequence. These studies have shown for the first time that binary toxin production is subject to strict regulatory control by the response regulator CdtR, which is a member of the LytTR family of response regulators and is related to the AgrA protein from Staphylococcus aureus.
The first low voltage, low noise differential silicon microphone, technology development and measurement results (2002)

The first differential silicon microphone is presented. This capacitive working device consists of two backplates with a membrane in between. Due to the balanced arrangement the air gap can be minimized. Thus, a higher electrical field and sensitivity can be achieved for low voltages. A dedicated process sequence has been developed in order to get the optimum mechanical and electrical properties for all structural layers. Furthermore, a sandwich structure has been developed to achieve a reproducible, very sensitive microphone membrane with a thickness of only 0.5 /spl mu/m and a stress of 45 MPa. The total sensitivity for a bias of 1.5 V was measured to be 13 mV/Pa and the A-weighted equivalent input noise was measured to be 22.5 dB SPLA. The upper limit of the dynamic range has been determined to be 118 dB SPL and the total harmonic distortion at 80 dB SPL is below 0.26%.
Partitioning of free energy contributions in the estimation of binding constants: residual motions and consequences for amide-amide hydrogen bond strengths (1992)

Copyright 2007 Elsevier B.V., All rights reserved.
Adaptive functional programming (2002)

An adaptive computation maintains the relationship between its input and output as the input changes. Although various techniques for adaptive computing have been proposed, they remain limited in their scope of applicability. We propose a general mechanism for adaptive computing that enables one to make any purely-functional program adaptive.We show that the mechanism is practical by giving an efficient implementation as a small ML library. The library consists of three operations for making a program adaptive, plus two operations for making changes to the input and adapting the output to these changes. We give a general bound on the time it takes to adapt the output, and based on this, show that an adaptive Quicksort adapts its output in logarithmic time when its input is extended by one key.To show the safety and correctness of the mechanism we give a formal definition of AFL, a call-by-value functional language extended with adaptivity primitives. The modal type system of AFL enforces correct usage of the adaptivity mechanism, which can only be checked at run time in the ML library. Based on the AFL dynamic semantics, we formalize the change-propagation algorithm and prove its correctness.
A CNN chip for connected component detection (1991)

The first working chips that implement a cellular neural network (CNN) are reported. They have been integrated in a CMOS 2- mu m technology, and are intended for connected component detection processing applications. The operation is made in continuous time using analog circuitry. The design, fabrication, and testing of these chips are presented.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Know Your Customer (KYC) Implementation with Smart Contracts on a Privacy-Oriented Decentralized Architecture (2020)

Enterprise blockchain solutions attempt to solve the crucial matter of user privacy, albeit that blockchain was initially directed towards full transparency. In the context of Know Your Customer (KYC) standardization, a decentralized schema that enables user privacy protection on enterprise blockchains is proposed with two types of developed smart contracts. Through the public KYC smart contract, a user registers and uploads their KYC information to the exploited IPFS storage, actions interpreted in blockchain transactions on the permissioned blockchain of Alastria Network. Furthermore, through the public KYC smart contract, an admin user approves or rejects the validity and expiration date of the initial user’s KYC documents. Inside the private KYC smart contract, CRUD (Create, read, update and delete) operations for the KYC file repository occur. The presented system introduces effectiveness and time efficiency of operations through its schema simplicity and smart integration of the different technology modules and components. This developed scheme focuses on blockchain technology as the most important and critical part of the architecture and tends to accomplish an optimal schema clarity.
Pensamiento y espacio: reflexiones epistemológicas (1978)

Geografo batek Geografiaren zergatiaz, balioaz, erabilgarritasunaz, helburuaz egindako hainbat gogoetaren emaitza da artikulua. Bere erantzunekin justifikatu egiten du 1977an geografi elkargo bat eta aldizkari zientifiko espezializatu bat sortzearen egokitasuna, kontuan hartuta batak zein besteak jorratuko duten zientzia eztabaidatua dela, itxuraz krisian dagoela eta barne arazoak dituela.
Aircraft Wake Vortex Detection Using Continuous-Wave Radar (1997)

he Applied Physics Laboratory designed and constructed a bistatic continuouswave radar system for experiments in aircraft wake vortex detection. Acoustic pumping was evaluated as a possible technique to enhance overall performance. The radar and acoustic systems were installed at the Baltimore–Washington International Airport in the fall of 1996. Controlled experiments using a NASA C-130 aircraft are discussed, and some preliminary results are presented. (
Heterogeneous Behavioral Hierarchy Extensions for SystemC (2007)

System level design methodology and language support for high-level modeling enhances productivity for designing complex embedded systems. For an effective methodology, efficiency of simulation and a sound refinement-based implementation path are also necessary. Although some of the recent system level design languages (SLDLs) such as SystemC, SystemVerilog, or SpecC have features for system level abstractions, several essential ingredients are missing from these. We consider: 1) explicit support for multiple models of computation (MoCs) or heterogeneity so that distributed reactive embedded systems with hardware and software components can be easily modeled; 2) the ability to build complex behaviors by hierarchically composing simpler behaviors and the ability to distinguish between structural and heterogeneous behavioral hierarchy; and 3) hierarchical composition of behaviors that belong to distinct MoCs, as essential for successful SLDLs. One important requirement for such an SLDL should be that the simulation semantics are compositional, and hence no flattening of hierarchically composed behaviors are needed for simulation. In this paper, we show how we designed SystemC extensions to facilitates for heterogeneous behavioral hierarchy, compositional simulation semantics, and a simulation kernel that shows up to 40% more efficient than standard SystemC simulation
Efficient procedure mapping using cache line coloring (1997)

As the gap between memory and processor performance continues to widen, it becomes increasingly important to exploit cache memory eflectively. Both hardware and aoftware approaches can be explored to optimize cache performance. Hardware designers focus on cache organization issues, including replacement policy, associativity, line size and the resulting cache access time. Software writers use various optimization techniques, including software prefetching, data scheduling and code reordering. Our focus is on improving memory usage through code reordering compiler techniques.In this paper we present a link-time procedure mapping algorithm which can significantly improve the eflectiveness of the instruction cache. Our algorithm produces an improved program layout by performing a color mapping of procedures to cache lines, taking into consideration the procedure size, cache size, cache line size, and call graph. We use cache line coloring to guide the procedure mapping, indicating which cache lines to avoid when placing a procedure in the program layout. Our algorithm reduces on average the instruction cache miss rate by 40% over the original mapping and by 17% over the mapping algorithm of Pettis and Hansen [12].
Consensus based distributed joint power and routing optimization in wireless sensor networks (2012)

This paper proposes a fast distributed optimization algorithm for total transmit power minimization in single-sink data gathering wireless sensor networks. Many of the existing decentralized optimization algorithms addressing cross-layer design over the physical and network layer are based on dual decomposition. Our design includes joint power and routing optimization with given source rates by using consensus mechanism in conjunction with alternating direction method of multipliers (ADMM). Thus, the problem is decoupled across the nodes via introducing local copies of the variables, which are then iteratively driven into consensus with the ADMM. By the numerical experiments, the proposed distributed algorithm is shown to converge significantly faster to near optimal solutions with a small amount of local variable exchange as compared to the existing methods based on the dual decomposition.
Introduction: Promoting health and well-being in social work education (2013)

We hypothesized that serum cystatin C can be a more predictable marker of arterial stiffness than serum creatinine and creatinine-based glomerular filtration rate (GFR). The aim of this study is to evaluate whether serum cystatin C is related to arterial stiffness independently of serum creatinine in subjects for whom serum creatinine is normal. A total of 2,018 individuals (1,120 males, 898 females) were enrolled. Mean brachial-ankle pulse wave velocity (baPWV) was used as a marker of arterial stiffness and sex-specific analysis was performed. A positive relationship between baPWV and serum cystatin C (Y=1109.0548+329.9102X, r(2)=0.056, p<0.001) was found in males. Stepwise multivariate regression analysis in males showed that age, waist circumference, heart rate, cystatin C level, triglyceride level, and fasting glucose were independent contributors to baPWV. In females, a positive relationship between baPWV and serum cystatin C (Y=1035.7828+402.2970X, r(2)=0.090, p<0.001) was found. Stepwise multivariate regression analysis showed that age, heart rate, cystatin C level, fasting glucose and insulin level were independent contributors to baPWV. Age, heart rate, fasting glucose and serum cystatin C were the significant variables in both genders that contributed to baPWV. In conclusion, this study confirmed that serum cystatin C was related to pulse wave velocity even in subjects with normal serum creatinine. This finding suggested that cystatin C could be a more predictable marker of arterial stiffness than serum creatinine and creatinine-based GFR.
Cellulase production in continuous and fed-batch culture by Trichoderma reesei MCG80 (1982)

Continuous culture of Natick's strain MCG80 of Trichoderma reesei at a dilution rate of 0.028 h/sup -1/ has yielded a cellulase titer of over 61 U/mL using 5% lactose as the sole carbon source. Enzyme productivity at this dilution rate is 168 IU/L/h. Repeated fed-batch cultures using this strain on lactose as the carbon source have titers of 10 IU/mL with productivities in excess of 100 IU/L/h. 5 figures, 1 table.
Apparatus designed for very accurate measurement of the optical reflection (2007)

The described instrument is a new reflectometer designed to check the normal specular reflectance of 40,000 reflectors necessary for the Laser Megajoule (LMJ). This new reflectometer has a high accuracy over the 400-950 nm wavelength range and allows the delicate measurement of shaped parts. The measurements are relative and several reference mirrors, which are low loss dielectric mirrors [R(lambda)>99.9%], are used for the standardization. The apparatus gives an excellent repeatability (< 0.06% at 2sigma) thanks to its design and automatic focalization imaging system. After a brief review that is related to performance evolution of the spectrophotometers, our facility and its components are described. The methodology of focusing and calibration are explained. The capabilities of our device are illustrated through some measurements realized on flat or shaped samples.
Distinct form I, II, III, and IV Rubisco proteins from the three kingdoms of life provide clues about Rubisco evolution and structure/function relationships (2007)

There are four forms of ribulose 1,5-bisphosphate carboxylase/oxygenase (Rubisco) found in nature. Forms I, II, and III catalyse the carboxylation and oxygenation of ribulose 1,5-bisphosphate, while form IV, also called the Rubisco-like protein (RLP), does not catalyse either of these reactions. There appear to be six different clades of RLP. Although related to bona fide Rubisco proteins at the primary sequence and tertiary structure levels, RLP from two of these clades is known to perform other functions in the cell. Forms I, II, and III Rubisco, along with form IV (RLP), are thought to have evolved from a primordial archaeal Rubisco. Structure/function studies with both archaeal form III (methanogen) and form I (cyanobacterial) Rubisco have identified residues that appear to be specifically involved with interactions with molecular oxygen. A specific region of all form I, II, and III Rubisco was identified as being important for these interactions.
Oxidation of amines with 2-sulfonyloxaziridines (Davis' reagents) (1988)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOxidation of amines with 2-sulfonyloxaziridines (Davis' reagents)Walter W. Zajac Jr., Thomas R. Walters, and Michael G. DarcyCite this: J. Org. Chem. 1988, 53, 25, 5856–5860Publication Date (Print):December 1, 1988Publication History Published online1 May 2002Published inissue 1 December 1988https://pubs.acs.org/doi/10.1021/jo00260a012https://doi.org/10.1021/jo00260a012research-articleACS PublicationsRequest reuse permissionsArticle Views1799Altmetric-Citations87LEARN 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
Zeolite Chemistry II. The Role of Aluminum in the Hydrothermal Treatment of Ammonium-Exchanged Zeolite Y, Stabilization (1977)

Ammonium exchanged zeolite Y was steam calcined at 573 to 1043K. Treatment with KF or NaCl solution removed 24 of the 56 original framework Al atoms per unit cell, which probably formed µ-trioxotrialuminum cations in the β cages. These complex cations contribute to the increased stability of the structure.