Miracle-dz/UniFAR-FTUs huggingface dataset:
Tinder and humanitarian hook-ups: the erotics of social media racism

Abstract In March 2014, at the height of the popularity of the hook-up application Tinder, The Guardian published the “Seven Shades of Cliché” of user profiles claiming that Humanitarians of Tinder are the “creepiest ticket yet to laidsville. ” Humanitarians of Tinder are Tinder users (a hook-up application) who have selected to present images of themselves in humanitarian or volunteer settings outside of the West (or Global North, developed world). With a Tumblr devoted to this subgroup of Tinder users, and mainstream media outlets including The Washington Post, The Atlantic, The Huffington Post, Yahoo News, and the feminist blog Jezebel following this story, Humanitarians of Tinder evoke dialogue about the intersections of sexiness and racialized benevolence. This article takes seriously Humanitarians of Tinder to think through the connections between social media hook-ups, racial affect, feminist studies humanitarianism, and racisms in development. It asks: why do people use humanitarian photos to generate hook-ups on social media? How does holding an African baby make someone “hot”?
The ROSAT Brightest Cluster Sample — III. Optical spectra of the central cluster galaxies

We present new spectra of dominant galaxies in X-ray selected clusters of galaxies, which combine with our previously published spectra to form a sample of 256 dominant galaxies in 215 clusters. 177 of the clusters are members of the ROSAT Brightest Cluster Sample (BCS; Ebeling et al. 1998), and 18 have no previous measured redshift. This is the first paper in a series correlating the properties of brightest cluster galaxies and their host clusters in the radio, optical and X-ray wavebands. 27 per cent of the central dominant galaxies have emission-line spectra, all but five with line intensity ratios typical of cooling flow nebulae. A further 6 per cent show only (NII)��6548,6584 with Hin absorption. We find no evidence for an increase in the frequency of line emission with X-ray luminosity. Purely X-ray-selected clusters at low redshift have a higher probability of containing line emission. The projected separation between the optical position of the dominant galaxy and its host cluster X- ray centroid is less for the line-emitting galaxies than for those without line emission, consistent with a closer association of the central galaxy and the gravitational centre in cooling flow clusters. The more H�-luminous galaxies have larger emission-line regions and show a higher ratio of Balmer to forbidden line emission, although there is a continuous trend of ionization behaviour across four decades in Hluminosity. Galaxies with the more luminous line emission (L(H�)> 10 41 ergs 1 ) show a significantly bluer continuum, whereas lower-luminosity and (NII)-only line emitters have continua that differ little from those of non-line emitting dominant galaxies. Values of the Balmer decrement in the more luminous systems commonly imply intrinsic reddening of E(B-V)� 0.3, and when this is corrected for, the excess blue light can be characterized by a population of massive young stars. Several of the galaxies require a large population of O stars, which also provide sufficient photoionization to produce theobserved Hluminosity. The large number of lower-mass stars relative to the O star population suggests that this anomalous population is due to a series of starbursts in the central galaxy. The lower H�-luminosity systems show a higher ionization state and few massive stars, requiring instead the introduction of a harder source of photoionization, such as turbulent mixing layers, or low-level nuclear activity. The line emission from the systems showing only (NII) is very similar to low-level LINER activity commonly found in many normal elliptical galaxies.
Impact of Dual Task on Parkinson's Disease, Stroke and Ataxia Patients' Gait: A Comparative Analysis

Introduction: Performing dual task for neurological patients is complex and it can be influenced by the localization of the neurological lesion.Objective: Comparing the impact of dual task on gait in patients with Parkinson's disease, stroke and ataxia.Method: Subjects with Parkinson's disease (PD) in initial phase, stroke and ataxia, with independent gait, were evaluated while doing simple gait, with cognitive, motor and cognitive-motor gait demand, assessing average speed and number of steps.Results: Ataxia and stroke patients, compared with PD, showed an increase in the number of steps and decrease the average speed on the march with cognitive demand. Subjects with PD performed better on tasks when compared to others.Conclusion: In this study the impact of dual task was lower in Parkinson's disease patients.
Population genomics identifies the origin and signatures of selection of Korean weedy rice

Summary Weedy rice is the same biological species as cultivated rice (Oryza sativa); it is also a noxious weed infesting rice fields worldwide. Its formation and population‐selective or ‐adaptive signatures are poorly understood. In this study, we investigated the phylogenetics, population structure and signatures of selection of Korean weedy rice by determining the whole genomes of 30 weedy rice, 30 landrace rice and ten wild rice samples. The phylogenetic tree and results of ancestry inference study clearly showed that the genetic distance of Korean weedy rice was far from the wild rice and near with cultivated rice. Furthermore, 537 genes showed evidence of recent positive or divergent selection, consistent with some adaptive traits. This study indicates that Korean weedy rice originated from hybridization of modern indica/indica or japonica/japonica rather than wild rice. Moreover, weedy rice is not only a notorious weed in rice fields, but also contains many untapped valuable traits or haplotypes that may be a useful genetic resource for improving cultivated rice.
Performance Analysis Comparison of FFT and Discrete Wavelet Packet Transform (DWPT) Based MIMO-OFDM Systems

Multiple Input Multiple output (MIMO) antennas can be combined with orthogonal frequency division multiplexing (OFDM) to ensure spatial diversity gain and/or to increase spectral efficiency. MIMO communication system with Alamouti methods can improve the bit error rate (BER) and signal to noise ratio (SNR) thus distortions are reduced for higher data rate. Conventionally OFDM is Fast Fourier Transform (FFT) based system, it uses IFFT (Inverse FFT) blocks in the transmitter and FFT blocks in the receiver. Replacing the FFT with Discrete Wavelet Packet Transform (DWPT) makes the system’s performance further improved. This leads to a new scenario of DWPT based MIMO OFDM system. In this work, the STBC-MIMO-OFDM under the scenario of having multiple antennas system, with QAM in Rayleigh fading channel for different values of Quadrature Amplitude Modulation (QAM) points (8, 32 and 64) are implemented. By evaluating the BER performance and the transmission capacity, it turns out that the DWPT based MIMO-OFDM system is superior compared with the FFTMIMO-OFDM system. BER performance of the system is analyzed under different channel environments to assess the WPT based MIMO-OFDM performance in order to compare it with FFT based MIMO-OFDM system. In this paper the numerical results of the simulation consist a new contribution and are obtained using MATLAB. The simulation of DWPT-OFDM was accomplished with Haar mother based multicarrier. Whereas for both the latter and the conventional FFT-OFDM were subjected to the same conditions, for the multi-antenna system channel capacity and QAM modulation (8, 32, and 64) points in flat fading channels with AWGN and selective fading channel with AWGN. Computer simulation results demonstrate that the proposed wavelet based MIMOOFDM system outperforms in Alamouti (two transmit antenna and two receive antenna) due to the overlapping nature of DWPT dispensing the addition of cyclic prefix and less hardware complexity as in FFT based MIMOOFDM. Key-Words: DWPT, FFT, OFDM, MIMO, Alamouti STBC. Performance Analysis Comparison of FFT and Discrete Wavelet Packet Transform (DWPT) Based MIMO-OFDM Systems SOUKAINA ETTARFAOUI HAITHAM JABBAR TAHA MOHAMMED MAJID HIMMI LIMIARF, Faculty of Sciences Department of Electrical Engineering LIMIARF, Faculty of Sciences Mohammed-V University University of Technology Mohammed-V University Rabat, Morocco Baghdad/ Iraq Rabat, Morocco settarfaoui@gmail.com haithm1969@yahoo.com himmi@fsr.ac. ma WSEAS TRANSACTIONS on COMMUNICATIONS Soukaina Ettarfaoui, Haitham Jabbar Taha, Mohammed Majid Himmi E-ISSN: 2224-2864 267 Volume 14, 2015
The Porter Hypothesis at 20: Can Environmental Regulation Enhance Innovation and Competitiveness?

Some twenty years ago, Harvard Business School economist and strategy professor Michael Porter challenged conventional wisdom about the impact of environmental regulation on business by declaring that well-designed regulation could actually enhance competitiveness. The traditional view of environmental regulation held by virtually all economists until that time was that requiring firms to reduce an externality like pollution necessarily restricted their options and thus by definition reduced their profits. After all, if profitable opportunities existed to reduce pollution, profit-maximizing firms would already be taking advantage of them. Over the past twenty years, much has been written about what has since become known simply as the Porter Hypothesis. Yet even today, we continue to find conflicting evidence concerning the Porter Hypothesis, alternative theories that might explain it, and oftentimes a misunderstanding of what the Porter Hypothesis does and does not say. This article examines the key theoretical foundations and empirical evidence concerning the Porter Hypothesis, discusses its implications for the design of environmental regulations, and outlines directions for future research on the relationship between environmental regulation, innovation, and competitiveness.
Phrase Type Sensitive Tensor Indexing Model for Semantic Composition

Compositional semantic aims at constructing the meaning of phrases or sentences according to the compositionality of word meanings. In this paper, we propose to synchronously learn the representations of individual words and extracted high-frequency phrases. Representations of extracted phrases are considered as gold standard for constructing more general operations to compose the representation of unseen phrases. We propose a grammatical type specific model that improves the composition flexibility by adopting vector-tensor-vector operations. Our model embodies the compositional characteristics of traditional additive and multiplicative model. Empirical result shows that our model outperforms state-of-the-art composition methods in the task of computing phrase similarities.
Hybrid feedback for global asymptotic stabilization on a compact manifold

In this paper, we employ a hybrid feedback control strategy to globally asymptotically stabilize a setpoint on a smooth compact manifold without boundary satisfying the following: there exists a finite maximal atlas such that the desired setpoint belongs to each chart of the atlas. The proposed hybrid controller includes a proportional-derivative (PD) action during flows and, at jumps, uses hysteresis to switch between local coordinate charts to stabilize the desired setpoint robustly with respect to exogenous disturbances. We show that the proposed controller can be used for attitude stabilization of a rigid body and we illustrate the behavior of the closed-loop system via simulation results.
Robust control for line-of-sight stabilization of a two-axis gimbal system

Line-of-sight stabilization against various disturbances is an essential property of gimbaled imaging systems mounted on mobile platforms. In recent years, the importance of target detection from higher distances has increased. This has raised the need for better stabilization performance. For that reason, stabilization loops are designed such that they have higher gains and larger bandwidths. As these are required for good disturbance attenuation, sufficient loop stability is also needed. However, model uncertainties around structural resonances impose strict restrictions on sufficient loop stability. Therefore, to satisfy high stabilization performance in the presence of model uncertainties, robust control methods are required. In this paper, a robust controller design in LQG/LTR, H$_{\infty }$, and $\mu $-synthesis framework is described for a two-axis gimbal. First, the performance criteria and weights are determined to minimize the stabilization error with moderate control effort under known platform disturbance profile. Second, model uncertainties are determined by considering locally linearized models at different operating points. Next, robust LQG/LTR, H$_{\infty }$, and $\mu $ controllers are designed. Robust stability and performance of the three designs are investigated and compared. The paper finishes with the experimental performances to validate the designed robust controllers.
Rewarding Provider Performance: Aligning Incentives in Medicare

Rewarding Provider Performance: Aligning Incentives in Medicare Institute of Medicine. 272 pages. Washington, DC: National Academies Pr; 2007. $39.56. ISBN 9780309102162. Order at www.nap. edu. Field of medicine: Health system management. Format: Hardcover book. Audience: Strategic planners and medical group leaders. Purpose: To offer strategies for improving health care. Content: This book explores how changing Medicare payments could drive system improvements to achieve more desirable results in clinical quality, patient-centered care, and efficiency. We deliver extraordinarily good care in a broken system that does not live up to our expectations. It is plagued by medical errors of omission and commission, widespread dissatisfaction, waste, and high cost. As Paul Bataldan notes, every system is perfectly designed to achieve the results that it gets. This book is a timely compendium of strategic options in the form of 10 recommendations offered to the Secretary of the U.S. Department of Health and Human Services. Highlights: Coordination of care is a central theme in the redesign of the health care system. In this context, chapter 5 (Implementation) and sections of Appendix E (Rewarding Hospitals and Rewarding Ambulatory Care) are must-reads for anyone advising or leading physician practices. The bottom line is that lone practitioners will struggle in this game; the future lies with group providers. Limitations: After wading through redundancy and a bureaucratic writing style, the reader is left with no blueprint and only impressions of how the Centers for Medicare & Medicaid Services might pay for health care services. Disappointment with the poor health of the U.S. population is mentioned but is not the central issue in this book. The book focuses on a revitalization of the current delivery system for medical services. Historically, public health benefits have come more from civil engineering achievements (such as fresh water, sewerage, and housing) than from medical services. Today, challenges to good health in the United States are the consequences of bad social engineering, including harmful choices in diet, abuse of addictive substances, environmental disrespect, and lack of physical exercise. Related readings: The context for this book can be found in other publications from the Institute of Medicine (National Academies Pr), such as Crossing the Quality Chasm: A New Health System for the 21st Century (2001), Performance Measurement: Accelerating Improvement (2006), and Medicare's Quality Improvement Organization Program (2006). Reviewer: Woodruff J. English, MD, Providence St. Vincent Medical Center, Portland, Oregon.
The effectiveness of imperfect weighting in advice taking

We investigate decision-making in the Judge-Advisor-System where one person, the “judge”, wants to estimate the number of a certain entity and is given advice by another person. The question is how to combine the judge’s initial estimate and that of the advisor in order to get the optimal expected outcome. A previous approach compared two frequently applied strategies, taking the average or choosing the better estimate. In most situations, averaging produced the better estimates. However, this approach neglected a third strategy that judges frequently use, namely a weighted mean of the judges’ initial estimate and the advice. We compare the performance of averaging and choosing to weighting in a theoretical analysis. If the judge can, without error, detect ability differences between judge and advisor, a straight-forward calculation shows that weighting outperforms both of these strategies. More interestingly, after introducing errors in the perception of the ability differences, we show that such imperfect weighting may or may not be the optimal strategy. The relative performance of imperfect weighting compared to averaging or choosing depends on the size of the actual ability differences as well as the magnitude of the error. However, for a sizeable range of ability differences and errors, weighting is preferable to averaging and more so to choosing. Our analysis expands previous research by showing that weighting, even when imperfect, is an appropriate advice taking strategy and under which circumstances judges benefit most from applying it.
Phase behaviors of deeply supercooled bilayer water unseen in bulk water

Significance Bulk water exhibits rich phase behavior with numerous crystalline and amorphous ice phases. Although a recent femtosecond X-ray scattering experiment provides the first evidence of two forms of liquid water in deeply supercooled droplets, coexistence of the two forms of liquid water is still short-lived due to the known “no-man’s land” issue for bulk water. Here, we demonstrate simulation evidence that, in an isolated nanoslit, two forms of 2D liquid water, namely, the bilayer very low density liquid and bilayer high-density liquid, can arise in deeply supercooled states, but separated by the solid phase of bilayer amorphous ice whose melting line exhibits the isochore end point. A hitherto unreported bilayer very low density amorphous ice, largely in the negative pressure region, is also revealed. Akin to bulk water, water confined to an isolated nanoslit can show a wealth of new 2D phases of ice and amorphous ice, as well as unusual phase behavior. Indeed, 2D water phases, such as bilayer hexagonal ice and monolayer square ice, have been detected in the laboratory, confirming earlier computational predictions. Herein, we report theoretical evidence of a hitherto unreported state, namely, bilayer very low density amorphous ice (BL-VLDA), as well as evidence of a strong first-order transition between BL-VLDA and the BL amorphous ice (BL-A), and a weak first-order transition between BL-VLDA and the BL very low density liquid (BL-VLDL) water. The diffusivity of BL-VLDA is typically in the range of 10−9 cm2/s to 10−10 cm2/s. Similar to bulk (3D) water, 2D water can exhibit two forms of liquid in the deeply supercooled state. However, unlike supercooled bulk water, for which the two forms of liquid can coexist and merge into one at a critical point, the 2D BL-VLDL and BL high-density liquid (BL-HDL) phases are separated by the highly stable solid phase of BL-A whose melting line exhibits the isochore end point (IEP) near 220 K in the temperature−pressure diagram. Above the IEP temperature, BL-VLDL and BL-HDL are indistinguishable. At negative pressures, the metastable BL-VLDL exhibits a spatially and temporally heterogeneous structure induced by dynamic changes in the nanodomains, a feature much less pronounced in the BL-HDL.
Maternal nutrition and the regulation of milk synthesis

Recent research has demonstrated the unsurpassed value of breast-feeding in promoting the optimal nutrition of the human neonate. Breast milk has been shown to have a uniquely appropriate composition for the neonate at a time when growth and development are occurring at a near-maximal rate, yet when many of the body's systems (digestive, hepatic and renal) are relatively immature. The N required for growth is both qualitatively and quantitatively appropriate for the immaturity of these systems, and the bioavailability of many vitamins and minerals to the neonate is enhanced in breast milk. Trophic factors in human milk (peptides, growth factors, hormones, amino acids, glycoproteins, polyamines nucleotides) the development of the immature gastrointestinal tract, and breast milk contains a number of enzymes (e.g. bile salt-stimulated with the potential to augment the infant's gastrointestinal digestive capacity These diverse observations the advantages of human milk and provide the rationale for the recommendation that breast milk should be the infant's only source of nutriment for the first 4-6 months of life
Primal-Dual Congestion Control Algorithms and E-Red AQM Scheme

In this thesis, we consider the primal-dual algorithm of network congestion control and E-RED AQM scheme as its implementation in the Internet. We first overview the recent work in network congestion control area, then introduce and analyze a decentralized network congestion control algorithm which has dynamic adaptations at both user ends and link ends, a so-called primal-dual algorithm. We show that this algorithm converges globally to the unique equilibrium, which solves the system problem in Kelly’s model [12] in the absence of delay. We also give sufficient conditions for local stability of this algorithm in a general topology network with heterogeneous roundtrip delays. This local stability result suggests that a slow enough link adaptation stabilizes arbitrary fast source adaptation, and thus this local stability condition applies also for the dual algorithm. We next introduce a router algorithm called Exponential-RED (E-RED) as an implementation of the primal-dual algorithm in the Internet. E-RED is similar to RED except that it sets the marking probability as an exponential function of the instantaneous or average virtual queue length. Satisfying some conditions on the parameter choices, this E-RED algorithm can stabilize TCP-Reno and is shown to outperform RED by achieving higher bandwidth utilization and lower queueing delay at the same time. We finally provide some ns-2 simulation results to compare E-RED and RED and discuss about the influence to the performance of the parameter choices of E-RED.