gebhart/patrepeval huggingface dataset:
Tweets are forever (2013)

This paper describes an empirical study of 1.6M deleted tweets collected over a continuous one-week period from a set of 292K Twitter users. We examine several aggregate properties of deleted tweets, including their connections to other tweets (e.g., whether they are replies or retweets), the clients used to produce them, temporal aspects of deletion, and the presence of geotagging information. Some significant differences were discovered between the two collections, namely in the clients used to post them, their conversational aspects, the sentiment vocabulary present in them, and the days of the week they were posted. However, in other dimensions for which analysis was possible, no substantial differences were found. Finally, we discuss some ramifications of this work for understanding Twitter usage and management of one's privacy.
Effects of Student Predisposing Characteristics on Student Success (1990)

The question of why some students successfully study through distance education and others do not is becoming increasingly important as distance education moves from a marginal to an integral role in the provision of post-secondary education. This paper first advances a multivariate framework for examining this issue. It then explores the predictive capability of students' in regard to their chances of successfully completing their first Athabasca University distance education course. Using Discriminant Analysis nine predisposing characteristics were found to be significantly related to success. The paper concludes with an assessment of the applicability of this approach to provide the basis for a comprehensive model for understanding success and persistence in distance education.
Abstract

Le fait que certains etudiants reussissent a poursuivre leurs etudes grâce a l'enseignement a distance alors que d'autres n'y arrivent pas est une question qui prend de plus en plus d'importance etant donne l'evolution de l'enseignement a distance qui passe d'un role marginal a un role plus complet dans les besoins de l'education post-secondaire. Dans un premier temps, on se propose d'analyser le sujet en le presentant dans un cadre a variables multiples. On explore ensuite la capacite predictive des de des etudiants par rapport a leurs chances de passer avec succes leur premier cours d'enseignement a distance de l'Universite Athabasca. D'apres l'analyse discriminante, on a trouve une relation significative entre neuf caracteristiques de predisposition et la reussite au cours. L'article se termine avec une discussion sur l'application de cette approche susceptible de constituer la base d'un modele complet pouvant servir a la comprehension de la reussite et de la persistance dans l'enseignement a distance
The SILICOMB cellular structure: Mechanical and dielectric properties (2009)

Abstract In this work, the mechanical and dielectric properties of a novel centresymmetric honeycomb structure (SILICOMB) are evaluated using finite element (FE) and finite difference time domain (FDTD) models as well as experimental results. The numerical analysis of the in‐plane mechanical properties has been carried out on the full scale and on the representative volume element (RVE) model. The FE model results are compared with the outcome of a series of experimental compressive tests carried out on core structures manufactured using fused deposition modelling (FDM) technique. The comparison with the set of results highlights the specific deformation mechanism of the repetitive cell geometry. Full‐wave FDTD analysis as well as quasi‐electrostatic calculations have been run to investigate in‐plane dielectric properties. Electromagnetic simulations, over a wide frequency band, allow the characterisation of the SILICOMB structure by two effective permittivity functions. Effective permittivity functions are frequency, polarisation and geometry dependent. Multiple geometry parameters to be used to design the honeycomb configurations for multifunctional applications are thus identified and discussed in the paper.
Heck reaction over palladium supported on nickel ferrite as an efficient and inexpensive catalyst (2008)

The palladium supported on nickel ferrite found to be highly active catalyst for the Heck olefination of aryl iodides and activated aryl bromides providing an excellent yield in an aerobic condition, in shorter reaction time.
Environmental significance of sharks in the Shotgun fauna, Paleocene of Wyoming (1963)

The selachians found in the Shotgun Member of the Fort Union Formation indicate that the waters in which the deposits were formed were saline. The suggestion is made that during middle and possibly late Paleocene a remnant of the Cannonball Sea prevailed in the western Plains region. It is postulated that periodic flooding from the Cannonball Sea of parts of the Wind River basin took place to produce significant salinity to support a selachian fauna in Waltman Lake.
Correct parts extraction from speech recognition results using semantic distance calculation, and its application to speech translation (1997)

This paper proposes a method for extracting the correct parts from speech recognition results by using an example-based approach for parsing those results that include several recognition errors. Correct parts are extracted using two factors: (1) the semantic distance between the input expression and example expression, and (2) the structure selected by the shortest semantic dis- tance. We examined the correct parts extraction rate and the effectiveness of the method in im- proving the speech understanding rate and the speech translation rate. The examination results showed that the proposed method is able to efficiently extract the correct parts from speech recognition results. About ninety-six percent of the extracted parts are correct. The results also showed that the proposed method is effective in understanding misrecognition speech sentences and in improving speech translation results. The misunderstanding rate for erroneous sentences is reduced about half. Sixty-nine per- -cent of speech translation results are improved for misrecognized sentences.
The GSK-3β/Fyn/Nrf2 pathway in fibroblasts and wounds of type 2 diabetes (2012)

A constitutively downregulated cytoprotective mechanism in response to oxidative stress and its constant companion, inflammation, may exist in clinical and experimental diabetes. The Nrf2 signaling pathway promotes the expression of a plethora of genes that regulate processes involved in protein stability, proteosome integrity, autophagy, senescence and protection against oxidative stress and inflammation. Nrf2 is held in the cytoplasm as an inactive complex bound to Keap1, which facilitates its ubiquitination. Dissociation of Nrf2 from its repressor Keap1 occurs in response to a stressful insult. Covalent modifications involving phosphorylation or acetylation of the free Nrf2 dictates its nucleocytoplasmic localization and henceforth the transcriptional activity of this pleiotropic protein. Bitar and Al-Mulla recently reported that an enhancement in the GSK-3β-Fyn signaling mechanism in wounds or fibroblasts of type 2 diabetes contributes to the diminution in Nrf2 nuclear accumulation and the concomitant aberration in the expression of Nrf2-dependent phase 2 antioxidant enzymes. This phenomenon was associated with a significant decrease in key fibroblast functions essential for wound healing, including cell migration and contraction. Overall, the authors newly identified defects in the GSK-3β-Fyn-Nrf2 signaling pathway during diabetes that may assist in placing us on the road for an evidence-based therapy of non-healing chronic wounds.
Analysis of the External Fixator Pin-Bone Interface (1993)

External fixator pins were inserted into tibiae of dogs under four in vivo loading conditions to examine the mechanism of pin loosening. Pins were quantitatively measured for pin torque resistance, and the pin tracts were studied radiographically and histologically. The pins holding an unstable fracture had more gross pin loosening. Pins also may become loose under static loads. Radiographic lucency of 1 mm or more in the cortical bone around a pin was evidence of gross pin loosening. Histologic examination showed that tight pin tracts were characterized by a lack of bone remodeling. Loose pin tracts were characterized by extensive bone resorption and inflammatory infiltrates. Pin loosening can be detected radiographically. Pin insertion technique is important to improve the initial pin torque resistance to minimize pin loosening. Sixty-nine percent of pins with an initial torque resistance of less than 68 Ncm became grossly loose compared with only 9% of pins with an initial torque resistance greater than 68 Ncm, regardless of the experimental group. Unstable external fracture fixation is another important factor in producing pin loosening. Pins loaded under unstable fracture fixation had the highest incidence of gross loosening. When applying an external fixator, the fracture rigidity should be critically evaluated and, if necessary, protected weight bearing must be introduced initially to minimize pin loosening.
First-principles calculations for zinc-blende AlInN alloys (1995)

First-principles calculations have been performed for ordered and disordered zinc-blende Al0.5In0.5N alloys including full relaxation of bond lengths and bond angles. The disordered alloy is predicted to have a mixing enthalpy of +39 meV/atom and a bowing parameter of +2.53 eV at the Γ-point transition. The similarity of the bulk zinc-blende and wurtzite Γ-point transitions also allows an estimate to be made of the energy gap versus composition for wurtzite alloys. In particular, the wurtzite AlInN alloy lattice matched to GaN is predicted to have an energy gap of 5.0 eV.
BUILD RATE PREDICTION USING ARTIFICIAL NEURAL NETWORK FOR POSITIVE DISPLACEMENT MOTOR APPLICATION IN FIELD X (2018)

One of the critical issue in drilling activity is well steering. Well trajectory as the result of well steering can affect well placement in reservoir, completion issue and anti-collision issue, etc. Steering wellbore to the wrong trajectory can cause damage and increase drilling cost. Directional driller performs well steering by giving steering command and controlling drilling parameters. This command is adjusted based on steering behavior of drilling BHA. Steering behavior is the ability of the drilling BHA in deviating wellbore based on given steering command and drilling parameter. By understanding the steering behavior of drilling BHA, directional driller can predict build rate and turn rate produced so accurate well trajectory can be accomplished. Several factors that affect steering behavior are steering command, formation characteristic, drilling assembly mechanism and drilling parameters. Obstacle in understanding steering behavior is the absence of correlation that connects each factor. Artificial Neural Network (ANN) is a tool that can find the relation between input parameters and output parameter without generating correlation, and use new input data to predict the value of the output. This research shows that Artificial Neural Network can be used as a tool to analyze steering behavior and predict build rate based on steering behavior. Using formation characteristic, steering mode, weight on bit, rotary speeds, jet impact force, motor bent angle and stabilizer size from 10 wells in field X as input parameters, ANN generates a model which later validated in predicting build rate from new dataset. The good agreement between prediction data and the actual data is showed in the results.
All-DNA finite-state automata with finite memory (2010)

Biomolecular logic devices can be applied for sensing and nano-medicine. We built three DNA tweezers that are activated by the inputs H(+)/OH(-); ; nucleic acid linker/complementary antilinker to yield a 16-states finite-state automaton. The outputs of the automata are the configuration of the respective tweezers (opened or closed) determined by observing fluorescence from a fluorophore/quencher pair at the end of the arms of the tweezers. The system exhibits a memory because each current state and output depend not only on the source configuration but also on past states and inputs.
FET-FET logic: a high performance, high noise margin E/D logic family (2002)

A new logic family, FFL (FET-FET logic), is reported which combines a low leaded delay-power product with good noise margin. It has many desirable attributes for GaAs VLSI circuits. Measurements of FFL and six other logic families in enhancement/depletion MESFET technology are compared for speed, power, and noise margin and show the advantages of using FFL for many applications. FFL requires only a single 2-V power supply, performs single-ended complex logic functions, and can operate reliably over the military temperature range.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Propagation-invariant spot arrays (1998)

Optical fields with scale- and shape-invariant transverse intensity profiles consisting of a prescribed distribution of bright spots are introduced. Approximations of such fields are demonstrated by means of binary annular-aperture diffractive elements.
Three Eras of Survey Research (2011)

Although survey research is a young field relative to many scientific domains, it has already experienced three distinct stages of development. In the first era , the founders of the field invented the basic components of the design of data collection and the tools to produce the statistical information from surveys. As they were inventing the method, they were also building the institutions that conduct surveys in the private, academic, and government sectors. The second era witnessed a vast growth in the use of the survey method. This growth was aided by the needs of the U.S. federal government to monitor the effects of investments in human and physical infrastructure, the growth of the quantitative social sciences, and the use of quantitative information to study consumer behaviors. The third era (1990 and forward) witnessed the declines in survey participation rates, the growth of alternative modes of data collection, the weakening of sampling frames, and the growth of continuously produced process data from digital systems in all sectors, but especially those emanating from the Internet. Throughout each era, survey research methods adapted to changes in society and exploited new technologies when they proved valuable to the field.
Motion analysis of upper extremity using six degree of freedom sensors (2003)

Summary form only given. The accurate monitoring of extremity motion in the past has been a difficult and tedious task. A process has been developed using a McDonnel Douglas 3Space Digitizer and a Macintosh microcomputer which quickly and accurately provides motion data for a task involving general motion in three dimensions. The digitizer uses electromagnetic technology to create a field around an electronic source. The position and orientation of sensors placed within this field are then obtained and saved. This device has been used to monitor the motion of the hand with respect to the forearm. A specially developed glove was used to attach a sensor to the forearm and another to the back of the hand. The orientation data of the sensors throughout the task was then stored on a floppy disk and analyzed with the use of a microcomputer. Using mathematical transformations, the orientation of the hand is referenced to the orientation of the forearm; the sensor on the forearm is a moving reference frame. General extremity motion can be monitored with slight modifications of the device.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Validation of a Radiosensitivity Molecular Signature in Breast Cancer (2012)

RSI is validated in 2 independent breast cancer datasets totaling 503 patients. Including prior data, RSI is validated in 5 independent cohorts (621 patients) and represents, to our knowledge, the most extensively validated molecular signature in radiation oncology.
Comparative Analysis of Decimation-Free Directional Filter Bank with Directional Filter Bank: In Context of Image Enhancement (2005)

This paper presents a new directional analysis tool namely decimation-free directional filter bank, and its comparison with directional filter bank. Outputs of directional filter bank are maximally decimated (smaller in size) due to the presence of decimators. Multi-rate identities are used to push all these decimators to the right of filters. By doing so, frequency scrambling produced in directional filter bank due to non-diagonalization of overall downsampling matrix is removed. No interpolation prior to image enhancement is required in decimation-free directional filter bank, as it was mandatory step before enhancement in directional filter bank. Artifacts produced due to interpolation can be misleading in situation like medical images, and aerial images. These artifacts are avoided in decimation-free directional filter bank as it requires no interpolation. Artifacts produced due to aliasing and folding during downsampling were also avoided in decimation-free directional filter bank due to absence of decimators. Synthesis in decimation-free directional filter bank at any stage, can be achieved by just simply adding all the images, as it was not the case with directional filter bank
Hierarchical Surface Prediction for 3D Object Reconstruction (2017)

Recently, Convolutional Neural Networks have shown promising results for 3D geometry prediction. They can make predictions from very little input data such as a single color image. A major limitation of such approaches is that they only predict a coarse resolution voxel grid, which does not capture the surface of the objects well. We propose a general framework, called hierarchical surface prediction (HSP), which facilitates prediction of high resolution voxel grids. The main insight is that it is sufficient to predict high resolution voxels around the predicted surfaces. The exterior and interior of the objects can be represented with coarse resolution voxels. Our approach is not dependent on a specific input type. We show results for geometry prediction from color images, depth images and shape completion from partial voxel grids. Our analysis shows that our high resolution predictions are more accurate than low resolution predictions.
Measurement of Adsorption Equilibrium by the Zero Length Column (ZLC) Technique Part 1:  Single-Component Systems (2003)

This paper reports the development and experimental validation of a new technique to measure adsorption equilibrium isotherms, based on measuring ZLC desorption curves at low flow rate under carefully controlled conditions. The validity of the method is confirmed by replication of the equilibrium isotherms for representative systems (CO2−CaA, CO2−NaLSX) measured by a conventional volumetric/piezometric method. The new technique has been used to measure equilibrium isotherms for CO2 and other sorbates on a range of zeolitic adsorbents over a wide range of temperature and loading. The data from these measurements are discussed and interpreted in relation to available structural information concerning cation locations in various X-type zeolites.
Automatically Detecting Rotation in Chest Radiographs Using Principal Rib-Orientation Measure for Quality Control (2014)

We present a novel method for detecting rotated lungs in chest radiographs for quality control and augmenting automated abnormality detection. The method computes a principal rib-orientation measure using a generalized line histogram technique for quality control, and therefore augmenting automated abnormality detection. To compute the line histogram, we use line seed filters as kernels to convolve with edge images, and extract a set of lines from the posterior rib-cage. After convolving kernels in all possible orientations in the range [0°, 180°), we measure the angle with maximum magnitude in the line histogram. This measure provides an approximation of the principal chest rib-orientation for each lung. A chest radiograph is upright if the difference between the orientation angles of both lungs with respect to the horizontal axis is negligible. We validate our method on sets of normal and abnormal images and argue that rib orientation can be used for rotation detection in chest radiographs as an aid in quality control during image acquisition. It can also be used for training and testing data sets for computer aided diagnosis research, for example. In our experiments, we achieve a maximum accuracy of approximately 90%.
Identification of the pregnancy responsible for gestational trophoblastic disease by DNA analysis. (1993)

In three cases of choriocarcinoma, genetic loci including a variable number of tandem repeat regions were amplified by the polymerase chain reaction method on DNA from three established cell lines and from lymphocytes of patients and their husbands to identify the responsible pregnancy. Case 1, from whom NaUCC-3 was derived, had only one full-term fetal death. Case 2, from whom NaUCC-4 was derived, had one normal delivery followed by one complete molar delivery and one normal delivery. Case 3, from whom NaUCC-2 was derived, had one normal delivery followed by one complete molar delivery. In case 1, NaUCC-3 was found to be of parental origin and derived from the pregnancy with full-term fetal death. In cases 2 and 3, NaUCC-4 and NaUCC-2 were of probable androgenetic origin and were derived from the pregnancy with complete hydatidiform mole. We also conducted the restriction fragment length polymorphism method using case 1 samples, and it confirmed the results based on the polymerase chain reaction method product patterns. All nine cases of hydatidiform mole and three cases of invasive mole were of androgenetic origin. The polymerase chain reaction method thus makes it possible to identify easily the pregnancy responsible for choriocarcinoma using only a few specimens without isotopes.
A novel approach to error protection in medium access control design (2003)

In this paper we analyze the problem of designing the medium access control (MAC) module under quality of service (QoS) constraints for real-time services. The attention is focused on the case of slowly time-varying channels, such as in wireless local area networks (WLAN), and an analytical approach for the optimization of transmission efficiency is presented. In the paper we also propose a novel automatic repeat on request (ARQ) protocol which allows reduction of protective overhead for each transmitted data unit, resulting in a minimum increase of reserved bandwidth.