gebhart/patrepeval huggingface dataset:
Adaptive query processing on RAW data (2014)

Database systems deliver impressive performance for large classes of workloads as the result of decades of research into optimizing database engines. High performance, however, is achieved at the cost of versatility. In particular, database systems only operate efficiently over loaded data, i.e., data converted from its original raw format into the system's internal data format. At the same time, data volume continues to increase exponentially and data varies increasingly, with an escalating number of new formats. The consequence is a growing impedance mismatch between the original structures holding the data in the raw files and the structures used by query engines for efficient processing. In an ideal scenario, the query engine would seamlessly adapt itself to the data and ensure efficient query processing regardless of the input data formats, optimizing itself to each instance of a file and of a query by leveraging information available at query time. Today's systems, however, force data to adapt to the query engine during data loading. This paper proposes adapting the query engine to the formats of raw data. It presents RAW, a prototype query engine which enables querying heterogeneous data sources transparently. RAW employs Just-In-Time access paths, which efficiently couple heterogeneous raw files to the query engine and reduce the overheads of traditional general-purpose scan operators. There are, however, inherent overheads with accessing raw data directly that cannot be eliminated, such as converting the raw values. Therefore, RAW also uses column shreds, ensuring that we pay these costs only for the subsets of raw data strictly needed by a query. We use RAW in a real-world scenario and achieve a two-order of magnitude speedup against the existing hand-written solution.
DRIVER MODERATOR METHOD FOR RETAIL SALES PREDICTION (2013)

We introduce a new method for stock keeping unit (SKU)-store level sales prediction in the presence of promotions to support order quantity and promotion planning decisions for retail managers. The method leverages the marketing literature to generate features, and data mining techniques to train a model that provides accurate sales predictions for existing and new SKUs, as well as consistent, actionable insights into category, store and promotion dynamics. The proposed "Driver Moderator" method uses basic SKU-store information and historical sales and promotion data to generate many features. It simultaneously selects few relevant features and estimates their parameters by using an L1-norm regularized epsilon insensitive regression that is formulated to pool information across SKUs and stores. Evaluations on two grocery store databases from Turkey and the USA show that out-of-sample predictions for existing and new SKUs are as good as, or more accurate than benchmark methods. Using the method's predictions for inventory decisions doubles the inventory turn ratio versus using individual regressions by lowering lost sales and inventory levels at the same time.
Biogas Reforming Conversion Character on Microwave-heating Carbon Receptor (2020)

Objectives:Methane (CH<sub>4</sub>) and carbon dioxide (CO<sub>2</sub>) are the main components of biogas and are produced from biomass gasification. These two gases are a by-product gases that can be used as an energy source and is known as a greenhouse gas that affects global warming. In order to convert the gas which is the main cause of global warming into high-quality fuel energy, the microwave reforming characteristic research was conducted. In this study, the reforming characteristics of microwave carbon receptor pyrolysis-gasification gas were investigated. In addition, reforming gas conversion characteristics according to the reforming temperature, flow rate, and CH<sub>4</sub> / CO<sub>2</sub> ratio, which are the main influence variables, were studied.Methods:Experiment was achieved in a microwave convertor which was installed a quartz tube reactor. The reactor was irritated by a microwave energy to heat carbon receptor in a sample basket which was placed at the center of the quartz tube. A simulated gas mixture of methane and carbon dioxide was fed into the carbon receptor in the reactor, and a reformed product gas was collected and analyzed using a GC-TCD.Results and Discussion:In the case of microwave reforming of a mixture gas of carbon dioxide and methane, hydrogen and carbon was produced by thermal decomposition of methane. The produced carbon was adsorbed to the receptor and interfered with the catalytic activity. The attached carbon was reacted with the carbon dioxide by gasification reaction to produce carbon monoxide, and was cleaned to maintain a constant reforming conversion.Conclusions:As a result, the conversion rate and the product gas yield were high when the receptor bad reforming temperature was high and the space velocity in the convertor was low. The increase in methane in the simulated gas resulted in low conversion due to carbon adsorption.
Liposomal delivery of methylphosphonate antisense oligodeoxynucleotides in chronic myelogenous leukemia [see comments] (1994)

Chronic myelogenous leukemia (CML) is a hematologic malignancy characterized by the presence of the Philadelphia (Ph) chromosome. Bcr-abl, the fusion gene associated with the Ph chromosome, expresses a p210bcr-abl protein that promotes a selective expansion of mature myeloid progenitor cells. Methylphosphonate (MP) oligodeoxynucleotides complementary to specific regions of the bcr-abl mRNA were incorporated in liposomes. We studied the effects of liposomal MP (L-MP) on the growth inhibition of CML-like cell lines. L-MP targeted to the breakpoint junctions of the bcr-abl mRNA inhibited the growth of CML cells. Fifty percent inhibition was achieved at approximately 1 mumol/L of L-MP oligonucleotide concentrations. The inhibitory effect was selective because growth inhibition was observed only with CML but not with control cell lines. Moreover, CML cell growth inhibition was dependent on the sequence of the MP oligodeoxynucleotides incorporated in the liposomes. The growth inhibition of CML cells by L-MP resulted from selective inhibition of the expression of the p210bcr-abl protein.
Influence of Laser Wavelength on Melt Bath Dynamics and Resulting Seam Quality at Welding of Thick Plates (2013)

CO2- and solid-state lasers are the most widely used beam sources. Owing to their different physical beam characteristics, these two types of laser differ fundamentally not only in how the beam is guided but also in their process behavior during deep penetration welding. Almost all industrial applications in thick material > 8 mm have to be full penetration welds to increase fatigue strength, for example in ship building, pipeline construction, train and rail construction or power-train, Holzer et al., 2011. Therefore process behavior and limits at full penetration will be analyzed in detail for both beam sources.
Leakage current starved domino logic (2006)

A new circuit technique based on a single PMOS sleep transistor and a dual threshold voltage CMOS technology is proposed in this paper for simultaneously reducing subthreshold and gate oxide leakage currents in idle domino logic circuits. In the sleep mode, the output inverter and keeper transistor of a domino gate are disconnected from the power supply by turning off a high threshold voltage sleep switch. The dynamic and output nodes are discharged by the initially high subthreshold and gate oxide leakage currents produced by the NMOS transistors in the pull-down network, output inverter, and fan-out gates. After the node voltages settle, the circuit is placed into a low subthreshold and gate oxide leakage state. The effectiveness of the circuit technique for suppressing leakage current is verified under significant fluctuations of channel length, gate oxide thickness, and channel doping concentration due to process variations. The proposed circuit technique lowers the total leakage power by 67.7% to 98.8% as compared to standard dual threshold voltage domino logic circuits. Similarly, an 11.7% to 84.1% reduction in total leakage power is observed as compared to a previously published sleep switch scheme in a 45nm CMOS technology.
Synthesis and Biological Evaluation of Nonpeptide Integrin Antagonists Containing Spirocyclic Scaffolds. (2004)

Abstract For Abstract see ChemInform Abstract in Full Text.
Decentralized production of hydrogen from hydrocarbons with reduced CO2 emission (2006)

Currently, most of the industrial hydrogen production is based on steam methane reforming process that releases significant amount of CO2 into the atmosphere. CO2 sequestration is one approach to solving the CO2 emission problem for large centralized hydrogen plants, but it would be impractical for decentralized H2 production units. The objective of this paper is to explore new routes to hydrogen production from natural gas without (or drastically reduced) CO2 emissions. One approach analyzed in this paper is based on thermocatalytic decomposition (TCD) of hydrocarbons (e.g., methane) to hydrogen gas and elemental carbon. The paper discusses some technological aspects of the TCD process development: (1) thermodynamic analysis of TCD using AspenPlus™ chemical process simulator, (2) heat input options to the endothermic process, (3) catalyst activity issues, etc. Production of hydrogen and carbon via TCD of methane was experimentally verified using carbon-based catalysts.
Synthesis and Herbicidal Activity of <i>bis</i>-Aryloxybenzenes: A New Structural Class of Protox Inhibitors Derived from N-Phenyl Benzotriazoles (1998)

The title compounds are new low application rate post-emergence herbicides with safety on broadleaf crops. The paper will describe the elaboration of existing chemistries which led to the discovery of the Aryloxybenzenes as well as the synthetic methodologies which were developed. A brief description of trends in structure-activity relationships which were observed will be given.
Synthesis and Processing of Nanostructured Steels. (1995)

Abstract : Enclosed are the quarterly report for the period Oct.-Dec. 1994 on the Synthesis & Processing of Nanostructured Steels Project. Also enclosed is the announcement for the symposium on Nanostructured Materials at the ACS National Meeting in Chicago in August 1995 and ICAM IV in Cancun in Sept. 1995. (MM)
Detecting Gunshots Using Wearable Accelerometers (2014)

Gun violence continues to be a staggering and seemingly intractable issue in many communities. The prevalence of gun violence among the sub-population of individuals under court-ordered community supervision provides an opportunity for intervention using remote monitoring technology. Existing monitoring systems rely heavily on location-based monitoring methods, which have incomplete geographic coverage and do not provide information on illegal firearm use. This paper presents the first results demonstrating the feasibility of using wearable inertial sensors to recognize wrist movements and other signals corresponding to firearm usage. Data were collected from accelerometers worn on the wrists of subjects shooting a number of different firearms, conducting routine daily activities, and participating in activities and tasks that could be potentially confused with firearm discharges. A training sample was used to construct a combined detector and classifier for individual gunshots, which achieved a classification accuracy of 99.4 percent when tested against a hold-out sample of observations. These results suggest the feasibility of using inexpensive wearable sensors to detect firearm discharges.
Fast processing of quantitative phase profiles from off-axis interferograms for real-time applications (2015)

We review new and efficient algorithms, lately presented by us, for rapid reconstruction of quantitative phase maps from off-axis digital interferograms. These algorithms improve the conventional Fourier-based algorithm by using the Fourier transforms and the phase unwrapping process more efficiently, and thus decrease the calculation complexity required for extracting the sample phase map from the recorded interferograms. Using the new algorithms, on a standard personal computer without using the graphic processing-unit programming or parallel computing, we were able to speed up the processing and reach frame rates of up to 45 frames per second for one megapixel off-axis interferograms. These capabilities allow real-time visualization, calculation and data extraction for dynamic samples and processes, inspected by off-axis digital holography. Specific applications include biological cell imaging without labeling and real-time nondestructive testing.
Ambipolar organic light-emitting transistors employing heterojunctions of n-type and p-type materials as the active layer (2006)

The realization of organic light-emitting transistors (OLETs) with high quantum efficiency and fast switching time is crucial for the development of highly integrated organic optoelectronic systems. In order to reach such a goal, fabrication of devices with ambipolar transport and high charge mobility values is needed. At present, organic materials having intrinsically ambipolar transport are restricted in number and show poor performance. This limits their use in efficient and fast switching single layer ambipolar OLETs. In this framework, we have taken the approach of combining p-type and n-type materials in two complementary configurations. The first one is based on realizing layered structures (bi-layer heterojunction) where materials are sequentially deposited. The second one is based on simultaneously evaporating two materials with variable composition ( bulk heterojunction) to form a mixed film. In this paper, the charge transport and electroluminescence properties of OLETs based on these heterostructures are presented. A correlation between the active layer structure and the electrical performances has been obtained by means of laser scanning confocal microscopy, here employed for morphology and spectroscopy analysis. Differences between the two approaches are critically discussed.
Joint transmission power control in transponded SATCOM systems (2016)

This paper presents a novel approach for the uplink transmission power control for satellite communication (SATCOM) links that share a transponder's transmission power. The proposed approach provides explicit link margins (LM) for both uplinks and downlinks against losses from various sources that are uncertain in nature. The feature allows the proposed algorithm to work effectively with information from SATCOM radio frequency (RF) situation awareness to establish transponded SATCOM links that achieve desired Quality of Service (QoS) requirements. The algorithm is applicable for both traditional satellite communication systems and protected Frequency Hopping (FH) SATCOM systems with transparent transponders.
Equalization method for a parsimonious communication channel and device implementing the method, Patent US9722817 B2. (2017)

Equalization method for a parsimonious communication channel and device implementing the method
Simple two-step photoionization yields high densities of laser-active <i>F</i>2+ centers (1978)

A selective two-step process is described for the photoionization of F2 centers. An electron trap density no greater than that of the original F2 center population is required for ∼100% ionization, and only modest light intensities are required (I∼10 W/cm2 or less). Certain divalent transition-metal ions have been found to make excellent traps. The two-step process has allowed the production of F+2 center densities ∼1018/cm3, as needed for the construction of efficient lasers.
Towards Comprehensive Release Planning for Software Product Lines (2006)

Release Planning (RP) plays an important role for the success of incremental product development. Proper planning includes consideration of stakeholder preferences, resources and their capacities, as well as product and business objectives. The complexity of this process is getting even larger when looking for releases of software product lines (SPL). SPL is considered as a viable and important software development paradigm allowing companies under certain conditions to realize order-of-magnitude improvements in time to market, cost, productivity, quality, and other business drivers. In this paper, we present ongoing research in the process to develop a comprehensive and formalized model for planning and optimizing releases for SPL. We have identified key issues that are unique to RP of SPL. Some of them are highlighted by an example modified from literature for illustrative purposes.
Design of a low-cost, compact SRF accelerator for flue gas and wastewater treatment (2017)

The treatment of flue gases from power plants and municipal or industrial wastewater using electron beam irradiation technology has been successfully demonstrated in small-scale pilot plants. The beam energy requirement is rather modest, of the order of few MeV, however the adoption of the technology at an industrial scale requires the availability of a high beam power, of the order of 1 MW, in a cost effective way. In this report we present the design of a compact superconducting accelerator capable of delivering a cw electron beam with a current of 1 A and an energy of 1 MeV. The main components are an rf-gridded thermionic gun and a conduction cooled beta= 0.5 elliptical Nb3Sn cavity with dual coaxial power couplers. An engineering and cost analysis shows that the proposed design would result in a processing cost competitive with alternative treatment methods.
Design, Synthesis and Physical Properties of New Liquid Crystal Materials Having a Fluoro-Substituted Tetrahydronaphthalene Structure for Active Matrix LCD (2004)

Liquid crystal materials having a fluoro-substituted tetrahydro-naphthalene structure were designed for active matrix LCD. 6-Aryl-5-fluoro-1,2,3,4- tetrahydronaphthalenes and 5,6-difluoro-1,2,3,4-tetrahydronaphthalenes were prepared by regioselective fluorination and hydrogenation of 2-naphthols. 6-Aryl-5,7-difluoro-1,2,3,4-tetrahydronaphthalenes were synthesized from 5,7-difluoro-1,2,3,4-tetrahydronaphthalene-2-one. The liquid crystal mixture containing these compounds with very good co-solubility exhibits a wide nematic temperature range with low melting point and very large value of dielectric anisotropy. From these results these compounds are useful for design of new liquid crystal mixtures for TFT-displays.
Pore‐size‐specific modification of porous materials (1994)

Pore ‐ size ‐ specific functionalization is a novel approach that allowspreviously undreamed of control of the location of groups undergoing reaction in the surface modigication of preformedporous polymers. That sozespecific functionalization makes possible the simultaneous accommodation of seemingly incompatible requirements is demonstrated by the preparation of porous polyner beads with bimodal surface chemistry. Applications of this technique are foreseen in thechromatographic separation of complex miztures, sensors, catalyses, and eczyme immobilization.
A new phase error compensation method in digital holographic microscopy (2015)

In this paper we present a new method to compensate for phase aberrations and image distortion with recording single digital hologram in digital holographic microscopy. In our method, tilt is removed from the abberrated phase map first. Then an area of interest (AOI) is generated by flood filled algorithm. By fitting AOI with discrete orthogonal Zernike polynomials, error phase map in the form of a series of Zernike polynomials is obtained. Final result can be calculated by subtracting the error phase map from the abberrated phase map. Through applying our method in microlens testing, phase aberrations and image distortion introduced by microscope objective are well suppressed.
PowerVisor (2012)

This paper presents a system called PowerVisor that is aimed at the virtualization of the battery resource of mobile devices across application classes. While other resources in a mobile device are virtualized, no similar sharing mechanism exists for the battery resource. In PowerVisor, each application class is assigned a virtual battery based on user level policies. We propose a light-weight battery charge monitoring scheme during the draining and charging of a battery on a per application or per application class basis. Leveraging this monitoring scheme, a device power manager is designed that allocates device resources (e.g., CPU, memory) to the different applications in accordance with device-level power management policies set by the user.
Synthesis and properties of bis(2,2-dimethylaziridinyl)phosphinic amides: a series of new antineoplastic agents (1985)

In continuation of efforts to improve the antitumor selectivity of the 2,2-dimethylaziridine class of alkylating agents, a series of N-substituted bis(2,2-dimethyl-1-aziridinyl)phosphinic amides has been synthesized and evaluated. All of these compounds (3-15) were tested in vivo against leukemia P-388 in mice, where most of them caused significant increase of survival time at nontoxic dose levels. Some of the most active compounds were also tested against leukemia L1210, B16 melanoma, and colon 26 carcinoma; in the latter tests, the parent unsubstituted amide 3 appeared to show the highest antitumor activity. Since the dose-limiting toxicity of the clinically tested prototypes of this class of anticancer agents AB-132 (1) and AB-163 (2) had been found to be CNS toxicity attributable mainly to the inhibition of cholinesterase, the compounds were tested in vitro against the cholinesterases from horse serum, electric eel, and bovine erythrocytes, as well as in vivo for the inhibition of the cholinesterase present in the whole blood of mice. In all of these assays, the various members of the present series showed a wide range of anticholinesterase activities, ranging from almost zero (for 3) to even higher potency than that of the prototype 2. A similarly wide range of stability was observed toward hydrolytic ring opening of the 2,2-dimethylaziridine moieties. Several of the compounds, particularly 3, deserve further study.
730-nm emitting compressively strained InGaAsP quantum well cw diode lasers (1998)

Summary form only given. The use of an InGaAsP quantum well (QW) active region offers the intriguing possibility of realizing reliable high-power operation at short wavelengths (730 nm). We employ high bandgap cladding layers and confining layers to suppress carrier leakage along with a 1.5% compressively strained InGaAsP QW. The structure was grown on [100] substrates misoriented 10 toward (111) A by low-pressure metal-organic chemical-vapor deposition (LPMOCVD).
Friendlee (2009)

We have designed and implemented Friendlee, a mobile social networking application for close relationships. Friendlee analyzes the user's call and messaging activity to form an intimate network of the user's closest social contacts while providing ambient awareness of the user' social network in a compelling, yet non-intrusive manner.