Miracle-dz/UniFAR-FTUs huggingface dataset:
A Novel Fast Face Recognition Method of Two-Dimensional Principal Component Analysis Based on BP Neural Networks

Two-dimensional principal component analysis technique is an important and well-developed area of image recognition and to date this method has been put forward. A new face recognition method two-dimensional principal component analysis (2DPCA) based on BP neural networks, named 2DPCA-BP method, was proposed. 2DPCA was used to obtain a family of projected feature vectors, in which face image was projected into this family of projected feature vectors to get the feature matrix. BP-based neural network was used as classifier for its good learning capability. Experiment proved that 2DPCA-BP is better than 2DPCA-SVMs in velocity and its recognition accuracy is 98.246%. The CVL database showed that the system achieved excellent performance.
Students with special needs and the composition of their peer group

One of the effects of implementing inclusive education is that the composition of the peer group of students with disabilities has changed from one consisting of only such students to one with no, or very few, students with disabilities. The question arises as to the implications of this situation for their social relations and self-concept. In order to answer this question, two reviews were conducted: one focusing on students' social relations and the other on students' self-concept. These reviews showed that students with learning disabilities in particular run the risk of being isolated from their peers in regular education and developing a negative self-concept. One of the potential options for intervention is to rearrange the composition of the peer group by combining a minority of students with disabilities with a majority of students without disabilities. This may provide the former with more varied opportunities to build relationships and more varied frames of reference for developing their self-concept.
Design of dual band printed dipole with compensation of frequency space attenuation

In this paper dual band printed antenna using parasitic elements is proposed for wireless services. The objective of this special design is to compensate the space attenuation difference between the frequency of 2.45GHz and the frequency of 5.8 GHz. Like the space attenuation difference is about 3.5 dB, the studied antenna must to have 3 dB more gain at 5.8 GHz than at 2.4 GHz.
Asia-born New Zealand-educated business graduates' transition to work

In 2008 the Asia New Zealand Foundation commissioned a three-year project examining Asia-born New Zealand-educated business graduates' study to work transitions. Data were collected through annual online surveys and in-depth interviews. Graduates were asked to discuss their post-study experiences, reflections on studying in New Zealand, and perceptions of their New Zealand business education. Participants included 171 (phase one), 76 (phase two) and 41 (phase three) students and recent graduates. All except one were based in New Zealand or the Asia region. In this paper we draw on “engaged pedagogy” and “functional capabilities” perspectives to consider phase two and three participants' accounts of their study to work transition pathways. Specifically, we examine two “functional capabilities” that participants discussed in relation to their post-study experiences: having economic opportunities and developing a sense of affiliation. We highlight some barriers to each “capability” that emerged in participants' accounts and consider how participants envisaged their role in fostering ongoing Asia-New Zealand connections. We conclude with some suggested implications for policy and practice in New Zealand and in internationalized HE more generally.
Effectiveness of direct-current cardioversion for treatment of supraventricular tachyarrhythmias, in particular atrial fibrillation, in surgical intensive care patients*

ObjectiveTo evaluate primary success rate and effectiveness of direct-current cardioversion in postoperative critically ill patients with new-onset supraventricular tachyarrhythmias. DesignProspective intervention study. SettingTwelve-bed surgical intensive care unit in a university teaching hospital. PatientsThirty-seven consecutive, adult surgical intensive care unit patients with new-onset supraventricular tachyarrhythmias without previous history of tachyarrhythmias. InterventionsDirect-current cardioversion using a monophasic, damped sinus-wave defibrillator. Energy levels used were 50, 100, 200, and 300 J for regular supraventricular tachyarrhythmias (n = 6) and 100, 200, and 360 J for irregular supraventricular tachyarrhythmias (n = 31). Measurements and Main ResultsNone of the patients was hypoxic, hypokalemic, or hypomagnesemic at onset of supraventricular tachyarrhythmia. Direct-current cardioversion restored sinus rhythm in 13 of 37 patients (35% primary responders). Most patients responded to the first or second direct-current cardioversion shock. Only one of 25 patients requiring more than two direct-current cardioversion shocks converted into sinus rhythm. Primary responders were significantly younger and demonstrated significant differences in arterial Po2 values at onset of supraventricular tachyarrhythmias compared with nonresponders. At 24 and 48 hrs, only six (16%) and five (13.5%) patients remained in sinus rhythm, respectively. ConclusionsIn contrast to recent literature, direct-current cardioversion proved to be an ineffective method for treatment of new-onset supraventricular tachyarrhythmias and, in particular, atrial fibrillation with a rapid ventricular response in surgical intensive care unit patients.
A 700mV low power low noise implantable neural recording system design

A low power, low noise implantable neural recording interface for use in a Radio-Frequency Identification (RFID) is presented in this paper. A two stage neural amplifier and 8 bit Pipelined Analog to Digital Converter (ADC) are integrated in this system. The optimized number of amplifier stages demonstrates the minimum power and area consumption; The ADC utilizes a novel offset cancellation technique robust to device leakage to reduce the input offset voltage. The neural amplifier and ADC both utilize 700mV power supply. The midband gain of neural amplifier is 58.4dB with a 3dB bandwidth from 0.71 to 8.26 kHz. Measured input-referred noise and total power consumption are 20. 7μVrms and 1.90 respectively. The ADC achieves 8 bit accuracy at 16Ksps with an input voltage of ±400mV. Combined simulation and measurement results demonstrate the neural recording interface's suitability for in situ neutral activity recording.
Validity and generalizability of a role‐play test to select telemarketing representatives

A role-play test was developed to assess the sales skills required for success in a telemarketing job. The 30-minute test was conducted entirely by telephone and consisted of four role-plays in which the ratee attempted to sell a service contract. In a concurrent validation study, the sum of two raters' independent evaluations of overall performance on the four role-plays was significantly correlated with both objective and subjective measures of sales performance. Based on generalizability analyses, the reliability of the overall ratings provided by two raters for four role-plays was . 80 in the concurrent study and . 76 when the role-play test was used operationally. This study demonstrated that ratings from a 30-minute telephone role-play test are valid and reliable predictors of sales performance.
Mean diffusivity of globus pallidus associated with verbal creativity measured by divergent thinking and creativity‐related temperaments in young healthy adults

Recent investigations revealed mean diffusivity (MD) in gray matter and white matter areas is correlated with individual cognitive differences in healthy subjects and show unique properties and sensitivity that other neuroimaging tools donot have. In this study, we tested the hypothesis that the MD in the dopaminergic system is associated with individual differences in verbal creativity measured by divergent thinking (VCDT) and novelty seeking based on prior studies suggesting associations between these and dopaminergic functions. We examined this issue in a large sample of right‐handed healthy young adults. We used analyses of MD and a psychological measure of VCDT, as well as personality measures of the Temperament and Character Inventory (TCI). Our results revealed associations between higher VCDT and lower MD in the bilateral globus pallidus. Furthermore, not only higher novelty seeking, but also lower harm avoidance, higher self‐directedness, and higher self‐transcendence were robustly associated with lower MD in the right globus pallidus, whereas higher persistence was associated with lower MD in the left globus pallidus. These personality variables were also associated with VCDT. The globus pallidus receives the dopaminergic input from the substantia nigra and plays a key role in motivation which is critically linked to dopamine. These results suggested the MD in the globus pallidus, underlie the association between VCDT and multiple personalities in TCI including novelty seeking. Hum Brain Mapp 36:1808–1827, 2015. © 2015 The Authors Human Brain Mapping Published by Wiley Periodicals, Inc.
Which landmark is useful? Learning selection policies for navigation in unknown environments

In general, a mobile robot that operates in unknown environments has to maintain a map and has to determine its own location given the map. This introduces significant computational and memory constraints for most autonomous systems, especially for lightweight robots such as humanoids or flying vehicles. In this paper, we present a novel approach for learning a landmark selection policy that allows a robot to discard landmarks that are not valuable for its current navigation task. This enables the robot to reduce the computational burden and to carry out its task more efficiently by maintaining only the important landmarks. Our approach applies an unscented Kalman filter for addressing the simultaneous localization and mapping problems and uses Monte-Carlo reinforcement learning to obtain the selection policy. Based on real world and simulation experiments, we show that the learned policies allow for efficient robot navigation and outperform handcrafted strategies. We furthermore demonstrate that the learned policies are not only usable in a specific scenario but can also be generalized towards environments with varying properties.
Analysis of contemporary HIV/AIDS health care costs in Germany

AbstractTo analyze contemporary costs of HIV health care and the cost distribution across lines of combination antiretroviral therapy (cART). To identify variations in expenditures with patient characteristics and to identify main cost determinants. To compute cost ratios between patients with varying characteristics.Empirical data on costs are collected in Germany within a 2-year prospective observational noninterventional multicenter study. The database contains information for 1154 HIV-infected patients from 8 medical centers.Means and standard deviations of the total costs are estimated for each cost fraction and across cART lines and regimens. The costs are regressed against various patient characteristics using a generalized linear model. Relative costs are calculated using the resultant coefficients.The average annual total costs (SD) per patient are &OV0556;22,231.03 (8786.13) with a maximum of &OV0556;83,970. cART medication is the major cost fraction (83.8%) with a mean of &OV0556;18,688.62 (5289.48). The major cost-driving factors are cART regimen, CD4-T cell count, cART drug resistance, and concomitant diseases. Viral load, pathology tests, and demographics have no significant impact. Standard non-nucleoside reverse transcriptase inhibitor-based regimens induce 28% lower total costs compared with standard PI/r regimens. Resistance to 3 or more antiretroviral classes induces a significant increase in costs.HIV treatment in Germany continues to be expensive. Majority of costs are attributable to cART. Main cost determinants are CD4-T cells count, comorbidity, genotypic antiviral resistance, and therapy regimen. Combinations of characteristics associated with higher expenditures enhance the increasing effect on the costs and induce high cost cases.
From goals to aspects: discovering aspects from requirements goal models

Aspect-oriented programming (AOP) has been attracting much attention in the software engineering community by advocating that programs should be structured according to programmer concerns, such as "efficient use of memory". However, like other programming paradigms in their early days, AOP hasn't addressed yet earlier phases of software development. In particular, it is still an open question how one identifies aspects early on in the software development process. This work proposes an answer to this question. Specifically, we show that aspects can be discovered during goal-oriented requirements analysis. Our proposal includes a systematic process for discovering aspects from relationships between functional and nonfunctional goals. We illustrate the proposed process with a case study adapted from the literature.
Decadal changes in glacier parameters in the Cordillera Blanca, Peru, derived from remote sensing

Abstract We present spatial patterns of glacier fluctuations from the Cordillera Blanca, Peru, (glacier area, terminus elevations, median elevations and hypsography) at decadal timescales derived from 1970 aerial photography, 2003 SPOT5 satellite data, Geographic Information Systems (GIS) and statistical analyses. We derived new glacier outlines from the 2003 SPOT images, and ingested them in the Global Land and Ice Measurements from Space (GLIMS) glacier database. We examined changes in glacier area on the eastern and western side of the Cordillera in relation to topographic and climate variables (temperature and precipitation). Results include (1) an estimated glacierized area of 569.6 ± 21 km2 in 2003, (2) an overall loss in glacierized area of 22.4% from 1970 to 2003, (3) an average rise in glacier terminus elevations by 113 m and an average rise in the median elevation of glaciers by 66 m, showing a shift of ice to higher elevations, especially on the eastern side of the Cordillera, and (4) an increase in the number of glaciers, which indicates disintegration of ice bodies. Annual air temperature showed a significant upward trend in the last 30 years, with larger temperature increases at lower elevations. There was a slight but not significant decrease in precipitation. Our results are consistent with glacier retreat and warming trends noted in the last three decades in the tropics.
A New Approach for Induction Motor Broken Bar Diagnosis by Using Vibration Spectrum

Different methods for detecting broken bars in induction motors can be found in literature. Many of these methods are based on evaluating special frequency magnitudes in machine signals spectrums. Current, power, flux, etc are among these signals. Frequencies related to broken rotor fault are dependent on slip; therefore, correct diagnosis of fault depends on accurate determination of motor velocity and slip. The traditional methods typically require several sensors that should be pre-installed in some cases. A practical diagnosis method should be easily performed in site and does not take too much time. This paper presents a diagnosing method based on only a vibration sensor. Motor velocity oscillation due to broken rotor causes frequency components at twice slip frequency difference around speed frequency in vibration spectrum. Speed frequency and its harmonics as well as twice supply frequency, can easily and accurately be found in vibration spectrum, therefore the motor slip can be computed. Now components related to rotor fault can be found. According to this method, an apparatus consisting necessary hardware and software has been designed. Experimental tests have confirmed the efficiency of the method
How Teachers Experience Principal Leadership: The Roles of Professional Community, Trust, Efficacy, and Shared Responsibility

Purpose: The leadership of the principal is known to be a key factor in supporting student achievement, but how that leadership is experienced and instructionally enacted by teachers is much less clear. The purpose of this study was to examine various factors that are often present in principal—teacher interactions and teacher—teacher relationships to see how those may have an impact on teachers' classroom instructional practices. Data Collection and Analysis: Data for this quantitative study are from a teacher survey developed for the national research project, Learning from Leadership, funded by the Wallace Foundation. There are 4,165 completed surveys in the database, which reflects responses from teachers in grades K-12 in a sample of schools across the United States. Using a conceptual framework based on various known components of effective schools today, a stepwise linear regression examined the relationships among practices such as shared leadership and professional community with contextual variables such as trust and efficacy. Findings: Three types of instructional behaviors—Standard Contemporary Practice, Focused Instruction, and Flexible Grouping Practices—emerged as strong factors which operationally described effective teacher practice. The presence of shared leadership and professional community explain much of the strength among the three instructional variables. Furthermore, the effect of teachers' trust in the principal becomes less important when shared leadership and professional community are present. Self-efficacy strongly predicts Focused Instruction, but it has less predictive value for the other measures of instructional behavior. Individual teacher characteristics of gender and years of experience have clear impact on instructional practice, but there are no discernible patterns that suggest that the level of the principal (elementary vs. secondary) have more or less influence on teacher instructional behaviors. Conclusions: Increasing our knowledge about what leaders do and how they have an impact on the instructional behaviors of teachers will lead us to a better understanding of how leadership has a direct relationship to improved student achievement. These findings create a clearer picture of teacher—principal and teacher—teacher interactions that support learning and bring us closer to the elusive goal of clarifying the link between leadership and learning.
A mutation that uncouples allosteric regulation of carbamyl phosphate synthetase in Drosophila.

In animals, UTP feedback inhibition of carbamyl phosphate synthetase II (CPSase) controls pyrimidine biosynthesis. Suppressor of black (Su(b) or rSu(b)) mutants of Drosophila melanogaster have elevated pyrimidine pools, and this mutation has been mapped to the rudimentary locus. We report that rSu(b) is a missense mutation resulting in a glutamate to lysine substitution within the second ATP binding site (i.e. CPS.B2 domain) of CPSase. This residue corresponds to Glu780 in the Escherichia coli enzyme (Glu1153 in hamster CAD) and is universally conserved among CPSases. When a transgene expressing the Glu-->Lys substitution was introduced into Drosophila lines homozygous for the black mutation, the resulting flies exhibited the Su(b) phenotype. Partially purified CPSase from rSu(b) and transgenic flies carrying this substitution exhibited a dramatic reduction in UTP feedback inhibition. The slight UTP inhibition observed with the Su(b) enzyme in vitro was due mainly to chelation of Mg2+ by UTP. However, the Km values for glutamate, bicarbonate, and ATP obtained from the Su(b) enzyme were not significantly different from wild-type values. From these experiments, we conclude that this residue plays an essential role in the UTP allosteric response, probably in propagating the response between the effector binding site and the ATP binding site. This is the first CPSase mutation found to abolish feedback inhibition without significantly affecting other enzyme catalytic parameters.
Using Ex Ante Approaches to Obtain Credible Signals for Value in Contingent Markets: Evidence from the Field

While contingent valuation remains the only option available for measurement of total economic value of nonmarketed goods, the method has been criticized due to its hypothetical nature. We analyze field experimental data to evaluate two ex ante approaches to attenuating hypothetical bias, directly comparing value statements across four distinct referenda: hypothetical, "cheap talk", "consequential", and real. Our empirical evidence suggests two major findings: hypothetical responses are significantly different from real responses; and responses in the consequential and cheap talk treatments are statistically indistinguishable from real responses. We review the potential for each method to produce reliable results in the field. Copyright 2007, Oxford University Press.
The Big Five personality factors as a model for the structure of children's peer nominations

The validity and usefulness of the five‐factor theory of personality as a model for children's peer nominations is assessed. Eighty‐nine groups of ten school children, attending the same class, aged 9 to 12 years, nominated the pupil that was the most or the least typical example for 25 bipolar trait pairs, covering the ‘Big Five’ personality factors. Factor analysis of summed and transformed peer nominations for the total sample shows that children's nominations can be represented by three factors: Agreeableness, a combined Extraversion–Emotional Instability component, and a combined Intellect–Conscientiousness factor. A second study with a smaller but independent sample confirms the factorial structure of the peer nomination scales. The reasons for the less differentiated peer nomination structure of children and the relevance of multidimensional assessment of peer perception are discussed. Copyright © 2000 John Wiley & Sons, Ltd.
Compressed sensing based interior tomography

While conventional wisdom is that the interior problem does not have a unique solution, by analytic continuation we recently showed that the interior problem can be uniquely and stably solved if we have a known sub-region inside a region of interest (ROI). However, such a known sub-region is not always readily available, and it is even impossible to find in some cases. Based on compressed sensing theory, here we prove that if an object under reconstruction is essentially piecewise constant, a local ROI can be exactly and stably reconstructed via the total variation minimization. Because many objects in computed tomography (CT) applications can be approximately modeled as piecewise constant, our approach is practically useful and suggests a new research direction for interior tomography. To illustrate the merits of our finding, we develop an iterative interior reconstruction algorithm that minimizes the total variation of a reconstructed image and evaluate the performance in numerical simulation.
Decomposition of Sources of Errors in Monthly to Seasonal Streamflow Forecasts in a Rainfall-Runoff Regime

AbstractDespite considerable progress in developing real-time climate forecasts, most studies have evaluated the potential in seasonal streamflow forecasting based on ensemble streamflow prediction (ESP) methods, utilizing only climatological forcings while ignoring general circulation model (GCM)-based climate forecasts. The primary limitation in using GCM forecasts is their coarse resolution, which requires spatiotemporal downscaling to implement land surface models. Consequently, multiple sources of errors are introduced in developing real-time streamflow forecasts utilizing GCM forecasts. A set of error decomposition metrics is provided to address the following questions: 1) How are errors in monthly streamflow forecasts attributed to various sources such as temporal disaggregation, spatial downscaling, imprecise initial hydrologic conditions (IHCs), climatological forcings, and imprecise forecasts? and 2) How do these errors propagate with lead time over different seasons? A calibrated Variable Infil.