gebhart/patrepeval huggingface dataset:
Intelligent Information Lifecycle Management in Virtualized Storage Environments (2014)

Data or information lifecycle management (ILM) is the process of managing data over its lifecycle in a manner that balances cost and performance. The task is made difficult by data's continuously changing business value. If done well, it can lower costs through the increased use of cost-effective storage but also runs the risk of negatively impacting performance if data is inadvertently placed on the wrong device (e.g., low performance storage or on an over-utilized storage device). To address this challenge, we designed and developed the Intelligent Storage Tiering Manager (ISTM), an analytics-driven storage tiering tool that automates the process of load balancing data across and within different storage tiers in virtualized storage environments. Using administrator-generated policies, ISTM finds data with the specified performance profiles and automatically moves them to the appropriate storage tier. Application impact is minimized by limiting overall migration load and keeping data accessible during migration. Automation results in significantly less labor and errors while reducing task completion time from several days (and in some cases weeks) to a few hours. In this paper, we provide an overview of information lifecycle management (ILM), discuss existing solutions, and finally focus on the design and deployment of our ILM solution, ISTM, within a production data center.
Flexible interchange of coded multimedia facilitating access and streaming (2002)

A fundamental limitation in the exchange of audio-visual information today is that its representation is extremely low level: it is composed of coded video or audio samples (often as blocks) arranged in a commercial format. In contrast the new generation multimedia requires flexible formats to allow a quick adaptation to requirements in terms of access, bandwidth scalability, streaming as well as general data reorganization. In this paper, after a brief overview of current efforts in the development of the MPEG-4 media format, we propose a framework that integrates advanced concepts such as objects based audio-visual representation, meta-data and object oriented programming to achieve a flexible and generic representation of the audio-visual information and the associated methods to operate on it.
A Gene Coding for Tomato Fruit β-Galactosidase II Is Expressed during Fruit Ripening (1998)

beta-Galactosidases (EC 3.2.1.23) constitute a widespread family of enzymes characterized by their ability to hydrolyze terminal, nonreducing beta-D-galactosyl residues from beta-D-galactosides. Several beta-galactosidases, sometimes referred to as exo-galactanases, have been purified from plants and shown to possess in vitro activity against extracted cell wall material via the release of galactose from wall polymers containing beta(1-->4)-D-galactan. Although beta-galactosidase II, a protein present in tomato (Lycopersicon esculentum Mill.) fruit during ripening and capable of degrading tomato fruit galactan, has been purified, cloning of the corresponding gene has been elusive. We report here the cloning of a cDNA, pTombetagal 4 (accession no. AF020390), corresponding to beta-galactosidase II, and show that its corresponding gene is expressed during fruit ripening. Northern-blot analysis revealed that the beta-galactosidase II gene transcript was detectable at the breaker stage of ripeness, maximum at the turning stage, and present at decreasing levels during the later stages of normal tomato fruit ripening. At the turning stage of ripeness, the transcript was present in all fruit tissues and was highest in the outermost tissues (including the peel). Confirmation that pTombetagal 4 codes for beta-galactosidase II was derived from matching protein and deduced amino acid sequences. Furthermore, analysis of the deduced amino acid sequence of pTombetagal 4 suggested a high probability for secretion based on the presence of a hydrophobic leader sequence, a leader-sequence cleavage site, and three possible N-glycosylation sites. The predicted molecular mass and isoelectric point of the pTombetagal 4-encoded mature protein were similar to those reported for the purified beta-galactosidase II protein from tomato fruit.
Advanced receiver design for satellite‐based automatic identification system signal detection (2012)

SUMMARY This paper describes an innovative receiver architecture for the satellite‐based automatic identification system. The receiver performance has been fully validated in the presence of the typical satellite channel characteristics. In particular, it is shown that the devised receiver provides an excellent performance against the noise, as well as a large resilience against message collisions, Doppler shift, and delay spread. Copyright © 2012 John Wiley & Sons, Ltd.
Development of an Enzyme-Linked Immunosorbent Assay for Specific Equine Neutrophil Myeloperoxidase Measurement in Blood (2005)

Equine inflammatory disease is accompanied by a neutrophil activation resulting in the release of granulocytic enzyme myeloperoxidase (MPO). To measure MPO in horse plasma as marker of neutrophil activation, the authors purified equine neutrophil MPO and developed a specific enzyme immunoassay using 2 specific polyclonal antibodies obtained from rabbit (primary antibody) and guinea pig (secondary antibody). The sandwich complex "primary antibody-MPO-secondary antibody" was detected using a goat anti-guinea pig immunoglobulin antibody conjugated to alkaline phosphatase. The enzyme-linked immunosorbent assay (ELISA) showed good precision and accuracy, with intra- and interassay coefficients of variation below 10% for MPO concentrations ranging from 0.78 to 50 ng/ml. A stable plasma MPO value, unaffected by time elapsed between blood collection and centrifugation, was obtained with plasma from EDTA anticoagulated blood. The mean MPO value measured in 38 healthy horses was 181.80 +/- 64.74 ng/ml. In 20 horses suffering from obstruction of the large or small intestine, MPO concentrations measured at the time of arrival at the intensive care unit were significantly higher than mean normal value, ranging from 477.88 to 2,748.13 ng/ml. Work is in progress to apply this MPO ELISA technique to other biological fluids and other equine diseases.
Detection and comparison of localized states produced in poly-Si/ultra-thin oxide/silicon, structures by plasma exposure or plasma charging during reactive ion etching (1996)

An approach using two terminal current measurements obtained in a cyclic current–voltage sweeping procedure, is shown to be very useful in detecting damage in poly-Si/ultra-thin SiO2/substrate Si gate structures subjected to dry etching. The current peaks seen in this approach, are shown to be due to displacement currents and to have different features depending on whether the capacitor structures were subjected to plasma charging currents, or plasma photon/particle exposure during etching. A model is presented relating these features to localized states at or near the SiO2/substrate interface.
Engineered superparamagnetic iron oxide nanoparticles for externally controlled hyperthermia, drug delivery, and therapeutic toxicity (2022)

<img src=” https://s3.amazonaws.com/production.scholastica/article/37603/large/prnano_832022ga.jpg?1660747427”> Nanotechnology and materials science are highly developing sectors where several new materials are investigated. One area includes iron oxide nanoparticles with superparamagnetic behavior. Since nanomaterials are prone to be associated with high levels of intrinsic toxicity and can have adverse effects if not properly guided. So, toxic mechanisms associated with nanomaterials are like that of a therapeutic drug or any other toxic compound. In that way, by ignoring the general pathways of cell death followed by the nanomaterials, the present report covers the points to control the growth of cancer cells by employing engineered nanoparticles (NPs) to induce therapeutic toxicity. We discuss the pathways for the induction of toxicity to the cancer cells using the superparamagnetic iron oxide nanoparticles (SPIONs) with and without surface ligands, and the ligand efficiency towards controlling toxicity is covered. Also, the therapeutic means of controlling the cancer cells, such as generating heat and releasing anticancer drugs in an externally organized manner, are also discussed. Overall, the report links the physical properties of SPIONs related to their natural or therapeutical toxicity by connecting physicochemical and toxicology principles.
Synthesis and Antiproliferatory Activities Evaluation of Multi-Substituted Isatin Derivatives (2020)

A series of multi-substituted isatin derivatives were synthesized using the powerful Sandmeyer reaction. The structures of these derivatives were confirmed by <sup>1</sup>H-NMR, <sup>13</sup>C-NMR, and HR-MS. Inhibition of proliferation activities of these derivatives against human leukemia cells (K562), human hepatocellular carcinoma cells (HepG2) and human colon carcinoma cells (HT-29) were evaluated in vitro using the MTT assay. Among the series, compound <b>4l</b> exhibited strong antiproliferatory activities against K562, HepG2 and HT-29 cells with IC<sub>50</sub> values of 1.75, 3.20, and 4.17 μM, respectively. The morphological, growth inhibitory and apoptosic effects of compound <b>4l</b> in K562 cells, wound healing effect in HepG2 cells, and tube formating effect in matrix gel of HUVEC cells were evaluated consequently. All results indicated that compound <b>4l</b> could be used as a potential antitumor agent in further investigations.
ChemInform Abstract: Moenomycin A: Minimum Structural Requirements for Biological Activity. (1987)

Abstract The title compound (I) is converted to (II) by stepwise degradation of the oligosaccharide moiety.
Studies on Production of Lipids in Fungi. XX. (1988)

An examination was made of the effects of metal ions and temperature on the lipid composition of Mortierella ramanniana var. angulispora, a lipid-producing fungus. In a concentration range not affecting cell growth, an increase in Zn2+ mainly caused increase in unsaturated fatty acids such as linoleic and γ-linolenic acids of polar lipids, but not neutral lipids. However, Fe2+ acted on neutral lipids rather than polar lipids, especially in regard to γ-linolenic acid content. Lowering the temperature led to increase in the γ-linolenic acid of polar lipis. Enzyme systems which modulate the fatty acid composition of polar and neutral lipids of this fungus, especially those determining γ-linolenic acid content, appear to differ or each to be regulated in a unique way.
Science and Applications of Photorefractive Polymeric Materials (1994)

In the past few years, a new class of polymeric materials for photonic applications has appeared called photorefractive (PR) polymers. Photorefractivity is defined as modulation of the index of refraction in an electro-optic material by internal electric fields produced by optical redistribution of charge carriers; hence it must not be confused with local mechanisms of index change such as photochromism, excited state population, heating, etc. When a material shows the required properties of charge generation, transport, trapping, and dependence of the index of refraction upon the internal electric field, it can be tested for photorefractivity by observation of asymmetric energy transfer (two-beam coupling) between two laser beams in the material.
Use of lysophosphatidylethanolamine, a natural lipid, to retard tomato leaf and fruit senescence (1993)

We studied the influence of lysophosphatidylethanolamine (LPE) on the pattern and rate of ethylene production and respiration of tomato ( Lycopersicon esculentum cv. H7155) leaflets and fruit. Leaflets that had been senescing on the plant showed a climacteric‐like rise in ethylene production but not in respiration rate which decreased continuously with leaf age. Detached leaflets had a climacteric‐like pattern in respiration whether they were incubated in complete darkness or in light. Detached leaflets incubated in the dark had higher rates of ethylene production and CO 2 evolution than did light‐incubated leaves. There was no change in the pattern of ethylene production or CO 2 evolution as a result of LPE treatment. However, LPE‐treated attached and detached leaflets had consistently lower rates of CO 2 evolution. The reduction in CO 2 evolution by LPE was most pronounced at the climacteric‐like peak of the detached leaves. LPE‐treated leaflets had a higher chlorophyll content and fresh weight and lower electrolyte leakage than the control. LPE‐treated fruits had lower rates of ethylene and CO 2 production than did the control. LPE‐treated fruits also had higher pericarp firmness and lower electrolyte leakage than the control. The results of the present study provide evidence that LPE is able to retard senescence of attached leaves and detached leaves and tomato fruits. Several recent studies suggest that lysolipids can act in a specific manner as metabolic regulators. Our results suggest a specific role of lysolipid LPE in aging and senescence
Assessing the use of Low Voltage UV-light Emitting Miniature LEDs for Marine Biofouling Control (2016)

Abstract : The accumulation of biofouling on marine vessels and structures is an ongoing issue for managers and operators. For vessels, one particular design feature that has long posed a problem for biofouling control is seachests. Traditional marine antifouling solutions are typically in the form of underwater coatings. Studies have shown that antifouling paints in seachests are unable to perform as well as they do on uniform areas of the hull. A fundamentally different way of preventing biofouling is by using UV light emission. We present a new approach for biofouling prevention, in which a UV light emitting layer is applied on exposed underwater surfaces for the inhibition of settling organisms. The introduction of miniature UV LEDs as a light source enables them to be embedded into thin, flexible, coating-like structures, in which the UV light dissipates evenly within the surface. Optical design elements ensure the light escapes more or less uniformly all over the coating layer. In this report, we present a description of the technology and experimental setup, as well as the results of pilot investigations of the efficacy of UV LEDs for the prevention of marine biofouling in a simulated vessel seachest environment and compare this to theoretical simulations of the light intensity over the surface area.
Storage-Optimized Data-Atomic Algorithms for Handling Erasures and Errors in Distributed Storage Systems (2016)

Erasure codes are increasingly being studied in the context of implementing atomic memory objects in large scale asynchronous distributed storage systems. When compared with the traditional replication based schemes, erasure codes have the potential of significantly lowering storage and communication costs while simultaneously guaranteeing the desired resiliency levels. In this work, we propose the Storage-Optimized Data-Atomic (SODA) algorithm for implementing atomic memory objects in the multi-writer multi-reader setting. SODA uses Maximum Distance Separable (MDS) codes, and is specifically designed to optimize the total storage cost for a given fault-tolerance requirement. For tolerating f server crashes in an n-server system, SODA uses an [n, k] MDS code with k = n - f, and incurs a total storage cost of n/n-f. SODA is designed under the assumption of reliable point-to-point communication channels. The communication cost of a write and a read operation are respectively given by O(f <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> ) and n/n-f(δ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">w</sub> +1), where δ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">w</sub> denotes the number of writes that are concurrent with the particular read. In comparison with the recent CASGC algorithm [1], which also uses MDS codes, SODA offers lower storage cost while pays more on the communication cost. We also present a modification of SODA, called SODA <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">err</sub> , to handle the case where some of the servers can return erroneous coded elements during a read operation. Specifically, in order to tolerate f server failures and e error-prone coded elements, the SODAerr algorithm uses an [n, k] MDS code such that k = n - 2e - f. SODAerr also guarantees liveness and atomicity, while maintaining an optimized total storage cost of n/n-f-2e.
Bag-of-Phrases (BoPh) and sentiment analysis of Arabic text in Twitter (2020)

Background/Objectives: Sentiment analysis plays main role in various text mining problems. Although, the Arabic text mining is important especially in the field of sentiment analysis, there is a paucity of research in it, especially, when it plays an important role in different issues in Arabic countries. Arabic language has many dialects that people use to express their feelings in social media. The objective of this study is to perform an experiment that follow the subjective opinion from the text. Subjective Analysis is one way that we can implement to improve the accuracy of the sentiment results in such texts in some dialects, that hide various meanings behind the words such as Saudi dialect. Methods/Statistical analysis: In this study, we manually annotated more than 8,000 tweets to have training and testing data sets with positive or negative words and phrases. Then we proposed a “Bag of Phrases” methodology to analyze the sentiments in the texts, which helped to improve the performance of sentiment analysis. Since using bag of words method is not enough in many cases, we applied a Naive Bayes algorithm to test our method. Findings: The results show that the accuracy of having True positive or True negative is about 84% comparing by using manual annotation process. The accuracy is calculated after taking into consideration the margin of error due to the manual annotation step and subjective interpretation of the texts by the annotators. Novelty/Applications: The novelty of the study is having more accurate training data set comparing with the other works in Saudi dialect for Arabic text, and proposing the BoPh concept.
A statistical machine learning approach for ticket mining in IT service delivery (2013)

Ticketing is a fundamental management process of IT service delivery. Customers typically express their requests in the form of tickets related to problems or configuration changes of existing systems. Tickets contain a wealth of information which, when connected with other sources of information such as asset and configuration information, monitoring information, can yield new insights that would otherwise be impossible to gain from one isolated source. Linking these various sources of information requires a common key shared by these data sources. The key is the server names. Unfortunately, due to historical as well as practical reasons, the server names are not always present in the tickets as a standalone field. Rather, they are embedded in unstructured text fields such as abstract and descriptions. Thus, automatically identifying server names in tickets is a crucial step in linking various information sources. In this paper, we present a statistical machine learning method called Conditional Random Field (CRF) that can automatically identify server names in tickets with high accuracy and robustness. We then illustrate how such linkages can be leveraged to create new business insights.
Modeling of the Point Spread Function by Numerical Calculations in Single-Pinhole and Multipinhole SPECT Reconstruction (2010)

In conventional reconstruction of single photon emission computed tomography (SPECT) data acquired with a single-pinhole or multipinhole system, the point spread function (PSF) may be either approximated by some analytical equations or substituted by the sensitivity function, which is the integral of the PSF. We have developed a method to numerically calculate the PSF for a pinhole system in order to improve image resolution over a sensitivity-function-based method. The method calculates the probability of photon penetration through the pinhole edges using a ray-tracing approach. To calculate the transmission by the collimator plate along each ray, we trace the ray through the collimator by analytical calculations. The PSF is calculated for only one detector angle, and a Gaussian rotator is used to rotate the image grid for other detector angles in the iterative reconstruction. To evaluate our method, we measured the sensitivities of four keel-edged single-pinhole plates and scanned an ultramicro Derenzo phantom on a single-pinhole system and a five-pinhole system and performed two mouse bone scans on the five-pinhole system using the 140 keV photons of Tc-99m. The numerical calculations of sensitivities for the single-pinhole plates agreed well with the measurements. Results for both types of data scans showed that modeling of the PSF improved image resolution. In conclusion, we found that modeling of the PSF by numerical calculations increases the resolution of reconstruction for single-pinhole and multipinhole SPECT imaging.
In vitro and in vivo delivery of genes and proteins using the bacteriophage T4 DNA packaging machine (2013)

The bacteriophage T4 DNA packaging machine consists of a molecular motor assembled at the portal vertex of an icosahedral head. The ATP-powered motor packages the 56-µm-long, 170-kb viral genome into 120 nm × 86 nm head to near crystalline density. We engineered this machine to deliver genes and proteins into mammalian cells. DNA molecules were translocated into emptied phage head and its outer surface was decorated with proteins fused to outer capsid proteins, highly antigenic outer capsid protein (Hoc) and small outer capsid protein (Soc). T4 nanoparticles carrying reporter genes, vaccine candidates, functional enzymes, and targeting ligands were efficiently delivered into cells or targeted to antigen-presenting dendritic cells, and the delivered genes were abundantly expressed in vitro and in vivo. Mice delivered with a single dose of F1-V plague vaccine containing both gene and protein in the T4 head elicited robust antibody and cellular immune responses. This "progene delivery" approach might lead to new types of vaccines and genetic therapies.
New exact-repair codes for distributed storage systems using matrix determinant (2016)

The exact-repair regeneration codes for distributed storage system are studied in this work. A novel coding scheme is proposed for code construction for any (n, k, d = k) system, and it is shown to be optimal. In particular, the optimum tradeoff of exact-repair regeneration system is fully characterized for any system with d = k. The new construction is based on fundamental properties of matrix determinant, thus the code is called determinant code. It is devised for the entire range of (α, β) on the optimum tradeoff.