Miracle-dz/UniFAR-FTUs huggingface dataset:
ECG based biometric human identification using chaotic encryption

Biometric identification provides a reliable performance on recognition of identity for different security and authentication management problems. With the development of technology, the privacy and security is the main concern as technology can be falsified. In recent decades biometric traits are the trusted choice to the researchers and there are strong documentations on biometric traits like human electrocardiogram which is the time changing electrical impulse signal passing through heart is able to use for identity subject identification. In this work, an analytic and serviceable analysis of the ECG for human identification is presented. A new approach based on chaotic encryption (CE) of continuous wavelet transformed (CWT) ECG signal has been proposed. The CWT used here to obtain similarity pattern of each individual and CE of the CWT decomposed signal used for subject identification. The proposed approach has been tested using 11 different subjects ECG signal available at MIT-BIH arrhythmia database. The obtained results show that the identification rate is 96.82%. The findings of this study can be helpful to develop effective biometric human identification system.
Flow cytometry as the spearhead for delivering sustainable and versatile laboratory services to HIV‐burdened health care systems of the developing world: A Caribbean model

HIV is targeting the developing nations of the world, threatening their economic development, overwhelming public health systems, and depleting human capital. The Caribbean is no exception, with the second highest incidence of HIV/AIDS outside Sub‐Saharan Africa, sharing similar mixed fortunes from a postcolonial heritage, limited resources, and an HIV population dispersed in small population centers. Here we share the experience of Barbados, an island state of 280,000 people, in mounting a holistic and sustainable program against HIV/AIDS. At the forefront of this response has been the growth in clinical flow cytometry used for CD4 monitoring, which has prompted a welcome expansion in diagnostic capacity even beyond HIV/AIDS. A pan‐Caribbean extension to Barbados' program has been the founding of the Caribbean Cytometry & Analytical Society (CCAS), which acts as a regional forum to accelerate technology transfer and develop the human resources needed to mount an effective response against HIV/AIDS. The 4th CCAS workshop in 2007 produced a consensus statement on the desirable characteristics for a “diagnostic dream machine”: a simple‐to‐use, rugged flow cytometer capable of carrying out multiple diagnostic functions at the point of patient care in rural or island settings of the developing world, including CD4 count, blood count, and opportunistic infections, without the need for a supply cold‐chain or dependable power source. It is our ambitious vision that the spread of flow cytometry, primarily to monitor CD4 in HIV/AIDS, can act as a Trojan horse to deliver better general and specialized diagnostic services to the developing world. © 2008 Clinical Cytometry Society
Human Appearance Change Detection

We present a machine learning approach to detect changes in human appearance between instances of the same person that may be taken with different cameras, but over short periods of time. For each video sequence of the person, we approximately align each frame in the sequence and then generate a set of features that captures the differences between the two sequences. The features are the occupancy difference map, the codeword frequency difference map (based on a vector quantization of the set of colors and frequencies) at each aligned pixel and the histogram intersection map. A boosting technique is then applied to learn the most discriminative set of features, and these features are then used to train a support vector machine classifier to recognize significant appearance changes. We apply our approach to the problem of left package detection. We train the classifiers on a laboratory database of videos in which people are seen with and without common articles that people carry - backpacks and suitcases. We test the approach on some real airport video sequences. Moving to the real world videos requires addressing additional problems, including the view selection problem and the frame selection problem.
Impact of trichloroethylene and toluene on nitrogen cycling in soil

The effects of trichloroethylene (TCE) and toluene on soil nitrogen-cycling activities were examined. Ammonium oxidation potential (AOP) was reduced after incubation with as little as 1 microgram of TCE ml-1, and the effects were generally greater when toluene was present and increased with longer exposure. Arginine ammonification potential and denitrification enzyme activity were constant regardless of TCE concentration or the presence of toluene, while nitrite oxidation potential (NOP) exhibited variable sensitivity. KCl-extractable ammonium levels increased dramatically after exposure to 30 and 60 micrograms of TCE ml-1 in the presence of toluene, whereas gamma-irradiated or sodium azide-treated soil incubated with the same concentrations of TCE and toluene showed no increase. Alfalfa-amended soils showed similar decreases in AOP and increases in extractable ammonium during incubation with 60 micrograms of TCE ml-1 and 20 micrograms of toluene ml-1, although most probable number estimates of the ammonium oxidizer population showed no difference between exposed and unexposed soil. AOP and extractable ammonium returned slowly to control levels after 28 days of incubation in the presence of TCE and toluene. Activity assays to which various TCE and toluene concentrations were added indicated that AOP and NOP were relatively more sensitive to these compounds than was arginine ammonification potential. These results indicate that the soil microbial populations responsible for nitrogen cycling exhibit different sensitivities to TCE and toluene and that they may be more susceptible to adverse effects than previously thought.
Constitutive gray hair in mice induced by melanocyte‐specific deletion of c‐Myc

c‐Myc is involved in the control of diverse cellular processes and implicated in the maintenance of different tissues including the neural crest. Here, we report that c‐Myc is particularly important for pigment cell development and homeostasis. Targeting c‐Myc specifically in the melanocyte lineage using the floxed allele of c‐Myc and Tyr::Cre transgenic mice results in a congenital gray hair phenotype. The gray coat color is associated with a reduced number of functional melanocytes in the hair bulb and melanocyte stem cells in the hair bulge. Importantly, the gray phenotype does not progress with time, suggesting that maintenance of the melanocyte through the hair cycle does not involve c‐Myc function. In embryos, at E13.5, c‐Myc‐deficient melanocyte precursors are affected in proliferation in concordance with a reduction in numbers, showing that c‐Myc is required for the proper melanocyte development. Interestingly, melanocytes from c‐Myc‐deficient mice display elevated levels of the c‐Myc paralog N‐Myc. Double deletion of c‐Myc and N‐Myc results in nearly complete loss of the residual pigmentation, indicating that N‐Myc is capable of compensating for c‐Myc loss of function in melanocytes.
The relationship between expectations for aging and physical activity among older adults

AbstractBACKGROUND: New strategies to increase physical activity among sedentary older adults are urgently needed. OBJECTIVE: To examine whether low expectations regarding aging (age-expectations) are associated with low physical activity levels among older adults. DESIGN: Cross-sectional survey. PARTICIPANTS: Six hundred and thirty-six English- and Spanish-speaking adults aged 65 years and above attending 14 community-based senior centers in the Los Angeles region. Over 44% were non-Latino whites, 15% were African American, and 36% were Latino. The mean age was 77 years (range 65 to 100). MEASUREMENTS: Self-administered written surveys including previously tested measures of age-expectations and physical activity level in the previous week. RESULTS: Over 38% of participants reported <30 minutes of moderate-vigorous physical activity in the previous week. Older adults with lower age-expectations were more likely to report this very low level of physical activity than those with high age-expectations, even after controlling for the independent effect of age, sex, ethnicity, level of education, physical and mental health-related quality of life, comorbidity, activities of daily living impairment, depressive symptoms, self-efficacy, survey language, and clustering at the senior center. Compared with the quintile of participants having the highest age-expectations, participants with the lowest quintile of age-expectations had an adjusted odds ratio of 2.6 (95% confidence intervals: 1.5, 4.5) of reporting <30 minutes of moderate-vigorous physical activity in the previous week. CONCLUSIONS: In this diverse sample of older adults recruited from senior centers, low age-expectations are independently associated with very low levels of physical activity. Harboring low age-expectations may act as a barrier to physical activity among sedentary older adults.
Character-Level Dependency Model for Joint Word Segmentation, POS Tagging, and Dependency Parsing in Chinese

Recent work on joint word segmentation, POS (Part Of Speech) tagging, and dependency parsing in Chinese has two key problems: the first is that word segmentation based on character and dependency parsing based on word were not combined well in the transition-based framework, and the second is that the joint model suffers from the insufficiency of annotated corpus. In order to resolve the first problem, we propose to transform the traditional word-based dependency tree into character-based dependency tree by using the internal structure of words and then propose a novel character-level joint model for the three tasks. In order to resolve the second problem, we propose a novel semi-supervised joint model for exploiting n-gram feature and dependency subtree feature from partiallyannotated corpus. Experimental results on the Chinese Treebank show that our joint model achieved 98.31%, 94.84% and 81.71% for Chinese word segmentation, POS tagging, and dependency parsing, respectively. Our model outperforms the pipeline model of the three tasks by 0.92%, 1.77% and 3.95%, respectively. Particularly, the F1 value of word segmentation and POS tagging achieved the best result compared with those reported until now. key words: joint model, Chinese word segmentation and POS tagging, dependency parsing, word internal dependency structure, semi-supervised learning
Exposing Hidden Truncation-Related Errors in Acute Stroke Perfusion Imaging

BACKGROUND AND PURPOSE: The durations of acute ischemic stroke patients' CT or MR perfusion scans may be too short to fully sample the passage of the injected contrast agent through the brain. We tested the potential magnitude of hidden errors related to the truncation of data by short perfusion scans. MATERIALS AND METHODS: Fifty-seven patients with acute ischemic stroke underwent perfusion MR imaging within 12 hours of symptom onset, using a relatively long scan duration (110 seconds). Shorter scan durations (39.5–108.5 seconds) were simulated by progressively deleting the last-acquired images. CBV, CBF, MTT, and time to response function maximum (Tmax) were measured within DWI-identified acute infarcts, with commonly used postprocessing algorithms. All measurements except Tmax were normalized by dividing by the contralateral hemisphere values. The effects of the scan duration on these hemodynamic measurements and on the volumes of lesions with Tmax of >6 seconds were tested using regression. RESULTS: Decreasing scan duration from 110 seconds to 40 seconds falsely reduced perfusion estimates by 47.6%–64.2% of normal for CBV, 1.96%–4.10% for CBF, 133%–205% for MTT, and 6.2–8.0 seconds for Tmax, depending on the postprocessing method. This truncation falsely reduced estimated Tmax lesion volume by 71.5 or 93.8 mL, depending on the deconvolution method. “Lesion reversal” (ie, change from above-normal to apparently normal, or from >6 seconds to ≤6 seconds for the time to response function maximum) with increasing truncation occurred in 37%–46% of lesions for CBV, 2%–4% for CBF, 28%–54% for MTT, and 42%–44% for Tmax, depending on the postprocessing method. CONCLUSIONS: Hidden truncation-related errors in perfusion images may be large enough to alter patient management or affect outcomes of clinical trials.
Electron Microscopic Identification of Viruses Associated With Poult Enteritis In Turkeys Grown In California 1993–2003

Abstract Poult enteritis (PE) is one of the most common diseases seen in young turkey flocks. Since 1993, more than 1800 cases of suspected PE have been submitted for examination by negative stain electron microscopy; this has involved more than 2400 individual results, because in many cases more than one virus was identified; at least 1500 individual results were positive for viruses. Viruses have been identified in poults as young as 3 days and up to 9 wk of age. The most commonly found viruses are rotavirus-like viruses and small round viruses ranging from 15 nm to 30 nm, either alone or in combination. Reovirus, birnavirus, and adenovirus have also been detected. There has been no evidence to suggest the presence of coronaviruses. This report summarizes our findings.
SUS users’ knowledge of and attitude to HPV virus and vaccines available in Brazil

OBJECTIVE To investigate knowledge of HPV and HPV vaccines in men and women, users of the Brazilian Unified Health System, and the intention to get themselves and their teenage children vaccinated. METHODS A descriptive, cross-sectional study with 286 women (18-49 years old) and 252 men (18-60 years old), users of five primary health units and two polyclinics in Campinas, SP, Southeastern Brazil, was carried out. Participants were interviewed in 2011 using a structured questionnaire. Bivariate and Poisson regression analysis were performed to identify variables associated with knowledge of HPV and HPV vaccines, and participants vaccination intentions. RESULTS Almost 40.0% of the participants reported having heard of HPV and 28.9% mentioned adequate information. The main information source was the media (41.7%). Only 8.6% of the participants had heard of the HPV vaccines. Once the participants were informed of the existence of HPV vaccines about 94% of them said they would get vaccinated and/or vaccinate their teenage children, if the vaccines were available in the public health system. Schooling of over 8 years and being female were the variables independently associated with having heard of HPV, the vaccines and having adequate knowledge of the virus. Advanced age was associated with having heard of HPV vaccines. There were no variables associated with the vaccination intentions. CONCLUSIONS These results reinforce the need for educational activities that provide the population with adequate information on HPV and preventive measures.
The role of choice versus preference: An analysis of why choice interventions work

Previous research has shown that providing students with the opportunity to choose the type of academic assignment could reduce a variety of problem behavior. However, procedural limitations of previous research prevent definitive conclusions regarding the mechanism by which choice interventions effect behavioral change. Furthermore, because research related to choice interventions has been limited primarily to children with developmental and emotional disabilities, the generality of such interventions is unclear. Therefore, the current study set out to extend the efforts of previous researchers by attempting to further isolate the mechanism by which choice procedures produce improved behavioral performance and attempted to further assess the generality of choice procedures by examining its effects on the behavior (e.g., maladaptive behavior, on-task behavior, academic performance) of a population (i.e., typically developing adolescent youth) not frequently targeted.
The self in social psychology

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A study of the B and Be star population in the field of the LMC open cluster NGC 2004 with VLT-FLAMES

Observations of hot stars belonging to the young cluster LMC-NGC 2004 and its surrounding region have been obtained with the VLT-GIRAFFE facilities in MEDUSA mode. 25 Be stars were discovered; the proportion of Be stars compared to B-type stars is found to be of the same order in the LMC and in the Galaxy fields. 23 hot stars were discovered as spectroscopic binaries (SB1 and SB2), 5 of these are found to be eclipsing systems from the MACHO database, with periods of a few days. About 75% of the spectra in our sample are polluted by hydrogen (H$\alpha $ and H$\gamma$), [S II] and [N II] nebular lines. These lines are typical of H II regions. They could be associated with patchy nebulosities with a bi-modal distribution in radial velocity, with higher values (+335 km s-1) preferentially seen inside the southern part of the known bubble LMC4 observed in H I at 21 cm.
From entering higher education to the end of year 1 : the previous and current experiences of mature students with dyslexia

This research examines experiences of ten mature dyslexic student respondents at five British universities; two pre-1992, and three post-1992 institutions. l': ach respondent «-as interviewed eight times concerning their school, work and HE experiences as mature dyslexic students. In addition to these student interviews, v-ari,, us support staff were interviewed to gain an extra perspective on the site under invcstig<iti()n. Unstructured and semi-structured interviews took place within the first year of the respondents returning to education, in an attempt to gain rich and raw data from the respondents als they progressed through their first academic y-ealr, with a close understanding of their experiences in every aspect of their lives: home, work and university. The social model of disability and critical social research provided the overall theoretical framework, but grounded theory was used in data analysis. Through analysis of the data generated by the respondents and the support staff, the study gained access to the experiences of dyslexia in the lives of the respondents, and how they felt this condition had affected them in their relationships at school and at work. In addition to this the study observed the experiential progress of the respondents as they returned to the higher educational environment. Finally, the research exposed difficulties and barriers that respondents faced in their return to education from the workplace, taking account of the support systems in place to help them through their academic difficulties. The results of the research uncovered a range of educational, sociological and psychological factors in the respondents' school and employment background. The research ilso showed how the respondents changed over one academic year, and reports their ambitions for the future.
HELP: star formation as function of galaxy environmentwith Herschel

The Herschel Extragalactic Legacy Project (HELP) brings together a vast range of data from many astronomical observatories. Its main focus is on the Herschel data, which maps dust obscured star formation over 1300 deg2. With this unprecedented combination of data sets, it is possible to investigate how the star formation vs stellar mass relation (main-sequence) of star-forming galaxies depends on environment. In this pilot study we explore this question between 0:1 2. We also estimate the evolution of the star formation rate density in the COSMOS field and our results are consistent with previous measurements at z 2 but we find a 1:4 (superscript) +0:3 (subscript) 0:2 times higher peak value of the star formation rate density at z about 1:9.
Rehabilitation programme after stem cell transplantation: randomized controlled trial.

AIM The aim of this study was to compare the effect of two methods of rehabilitation after stem cell transplantation on health and quality of life. BACKGROUND Stem cell transplantation is routinely used in the treatment of haematological malignancy. However, it is an intensive treatment often associated with deterioration in wellbeing and the need for prolonged recovery. METHODS During a 14-month data collection period (August 2005 to October 2006), patients who had had a stem cell transplant (n = 58) were randomly allocated to either a healthcare professional-led rehabilitation programme or a self-managed rehabilitation programme. The primary outcome measure, physical functioning as measured by the 36-item Short Form Health Survey, was recorded at baseline and 6 months after randomization. Secondary health and quality of life measures included the seven other dimensions of the 36-item Short Form Health Survey, General Health Questionnaire, Graham and Longman Quality of Life Scale and a Shuttle Walk Test. FINDINGS There was no difference in change in Short Form 36 physical functioning scores between the two groups at follow-up (mean difference 0.19 points, 95% confidence interval 10.77-11.16). No evidence of a difference between the two modes of rehabilitation was observed for any of the trial outcomes. CONCLUSION One approach for providing a flexible service may be for staff and individual patients to work together, selecting from a series of specified options a programme with the appropriate content and duration to meet that individual's needs.
Co-producing desistance: who works to support desistance

In 2003, McNeill argued that desistance research required a major shift in probation practice; a departure from practices underpinned solely by cognitive behavioural psychology focused on changing individual mindsets to practices attending to the relational and social contexts within and through which desistance occurs. Ten years hence, precisely how such a paradigm shift might be realised in practice remains inadequately understood. McNeill (2006:46) proposed that ‘offender management services need to think of themselves less as providers of correctional treatment (that belongs to the expert) and more as supporters of desistance processes (that belong to the desister). ’ Maruna (2006:16) similarly argued that reintegration properly belongs to communities and to formerly incarcerated persons and that the role of the practitioner is to ‘support, enhance and work with the organically occurring community processes of reconciliation and earned redemption’. Building on these observations, this chapter will commence with a brief overview of the outcomes of desistance research to provide context to the principal focus of this chapter; exploring how such a paradigm shift can and should translate into practice. Moreover, recognizing that the process of desistance, and the people who support it, extend beyond penal practices and practitioners, the focus here is on how practitioners might begin to reconfigure their relationships with and to individuals, families, groups and communities in order to co-produce desistance. Given that the emphasis of this edited collection is on penal practices and practitioners, this chapter will not dwell on the important role of peer-productive practices (Pestoff 2012) such as peer mentoring, self help, activism and mutual aid and their vital contribution in collaboratively co-producing desistance promoting community justice services. Such practices are discussed elsewhere (see for example Maruna and LeBel 2009; Weaver 2011; Weaver and Lightowler 2012; Weaver and McCulloch 2012).