Miracle-dz/UniFAR-FTUs huggingface dataset:
Performance of individual vs. group sampling for inferring dispersal under isolation‐by‐distance

Models of isolation‐by‐distance formalize the effects of genetic drift and gene flow in a spatial context where gene dispersal is spatially limited. These models have been used to show that, at an appropriate spatial scale, dispersal parameters can be inferred from the regression of genetic differentiation against geographic distance between sampling locations. This approach is compelling because it is relatively simple and robust and has rather low sampling requirements. In continuous populations, dispersal can be inferred from isolation‐by‐distance patterns using either individuals or groups as sampling units. Intrigued by empirical findings where individual samples seemed to provide more power, we used simulations to compare the performances of the two methods in a range of situations with different dispersal distributions. We found that sampling individuals provide more power in a range of dispersal conditions that is narrow but fits many realistic situations. These situations were characterized not only by the general steepness of isolation‐by‐distance but also by the intrinsic shape of the dispersal kernel. The performances of the two approaches are otherwise similar, suggesting that the choice of a sampling unit is globally less important than other settings such as a study's spatial scale.
The Effects of Monetary Policy on Unemployment Dynamics under Model Uncertainty - Evidence from the US and the Euro Area

This paper explores the role that the imperfect knowledge of the structure of the economy plays in the uncertainty surrounding the effects of rule-based monetary policy on unemployment dynamics in the euro area and the US. We employ a Bayesian model averaging procedure on a wide range of models which differ in several dimensions to account for the uncertainty that the policymaker faces when setting the monetary policy and evaluating its effect on real economy. We find evidence of a high degree of dispersion across models in both policy rule parameters and impulse response functions. Moreover, monetary policy shocks have very similar recessionary effects on the two economies with a different role played by the participation rate in the transmission mechanism. Finally, we show that a policy maker who does not take model uncertainty into account and selects the results on the basis of a single model may come to misleading conclusions not only about the transmission mechanism, but also about the differences between the euro area and the US, which are on average essentially small.
High body mass index for age among US children and adolescents, 2003-2006.

CONTEXT The prevalence of overweight among US children and adolescents increased between 1980 and 2004. OBJECTIVES To estimate the prevalence of 3 measures of high body mass index (BMI) for age (calculated as weight in kilograms divided by height in meters squared) and to examine recent trends for US children and adolescents using national data with measured heights and weights. DESIGN, SETTING, AND PARTICIPANTS Height and weight measurements were obtained from 8165 children and adolescents as part of the 2003-2004 and 2005-2006 National Health and Nutrition Examination Survey (NHANES), nationally representative surveys of the US civilian, noninstitutionalized population. MAIN OUTCOME MEASURES Prevalence of BMI for age at or above the 97th percentile, at or above the 95th percentile, and at or above the 85th percentile of the 2000 sex-specific Centers for Disease Control and Prevention (CDC) BMI-for-age growth charts among US children by age, sex, and racial/ethnic group. RESULTS Because no statistically significant differences in the prevalence of high BMI for age were found between estimates for 2003-2004 and 2005-2006, data for the 4 years were combined to provide more stable estimates for the most recent time period. Overall, in 2003-2006, 11.3% (95% confidence interval [CI], 9.7%-12.9%) of children and adolescents aged 2 through 19 years were at or above the 97th percentile of the 2000 BMI-for-age growth charts, 16.3% (95% CI, 14.5%-18.1%) were at or above the 95th percentile, and 31.9% (95% CI, 29.4%-34.4%) were at or above the 85th percentile. Prevalence estimates varied by age and by racial/ethnic group. Analyses of the trends in high BMI for age showed no statistically significant trend over the 4 time periods (1999-2000, 2001-2002, 2003-2004, and 2005-2006) for either boys or girls (P values between .07 and .41). CONCLUSION The prevalence of high BMI for age among children and adolescents showed no significant changes between 2003-2004 and 2005-2006 and no significant trends between 1999 and 2006.
An information theory analysis of spatial decisions in cognitive development

Performance in a cognitive task can be considered as the outcome of a decision-making process operating across various knowledge domains or aspects of a single domain. Therefore, an analysis of these decisions in various tasks can shed light on the interplay and integration of these domains (or elements within a single domain) as they are associated with specific task characteristics. In this study, we applied an information theoretic approach to assess quantitatively the gain of knowledge across various elements of the cognitive domain of spatial, relational knowledge, as a function of development. Specifically, we examined changing spatial relational knowledge from ages 5 to 10 years. Our analyses consisted of a two-step process. First, we performed a hierarchical clustering analysis on the decisions made in 16 different tasks of spatial relational knowledge to determine which tasks were performed similarly at each age group as well as to discover how the tasks clustered together. We next used two measures of entropy to capture the gradual emergence of order in the development of relational knowledge. These measures of “cognitive entropy” were defined based on two independent aspects of chunking, namely (1) the number of clusters formed at each age group, and (2) the distribution of tasks across the clusters. We found that both measures of entropy decreased with age in a quadratic fashion and were positively and linearly correlated. The decrease in entropy and, therefore, gain of information during development was accompanied by improved performance. These results document, for the first time, the orderly and progressively structured “chunking” of decisions across the development of spatial relational reasoning and quantify this gain within a formal information-theoretic framework.
Efficient Tiny Hardware Cipher under Verilog

Embedded hardware security has been an increasingly important need for many modern general and specific purposes electronic systems. Minute security algorithms with their expected low-cost and high-speed corresponding hardware realizations are of particular interest to fields such as mobile telecommunications, handheld computing devices, etc. In this paper, we analyze and evaluate the development of a cheap and relatively fast hardware implementation of the extended tiny encryption algorithm (XTEA). The development will start by modeling the system using finite state machines (FSMs) and will use Verilog hardware description language to describe the design. Minimizing the chip area will be our primary target rather than the construction of a multi-way massively parallel implementation with its expected high-speed and large silicon area. Many hardware design tools are used to try reaching the best possible optimized syntheses. The targeted hardware systems are the reconfigurable Altera’s Stratix II and Xilinx Virtex II Pro modern field programmable gate arrays (FPGAs).
Neurocognitive signatures of auditory and visual sensory gating

The aim of this thesis was to investigate the neurophysiological phenomenon of auditory and visual sensory gating, and primarily, explore the notion of a cross-modal mechanism. The electrophysiological characterisation and associated cognitive functions of both visual and auditory sensory gating were examined to determine similarities and differences across the two input modalities. In order to explore this, three issues were addressed: 1) The latency and surface scalp location(s) of the maximal or most reliable sensory gating was identified; 2) the associated cognitive mechanism(s) were explored using 11 diverse tasks incorporating attentional inhibition; 3) the sensitivity of the gating mechanism was examined with regards to changes in stimulus form/location or changes in attentional demand. Despite limited consideration in the literature to date, this thesis reports evidence that sensory gating is a phenomenon that exists within the visual modality and moreover, can be reliably observed. Compared to standard auditory gating procedures, visual gating is found at a later latency and further back in the central-parietal or central-occipital electrode sites. Correlations between visual and auditory gating with latent inhibition and the continuous performance task suggests gating, independent of iii modality, may reflect the encoding of target and non-target stimuli/stimulus features alike, and the subsequent categorisation and inhibition of those deemed irrelevant. Additionally, a comparable limitation was observed for both modalities, with regards to sensitivity of sensory gating, with spatial features being processed as a priority over the perceptual stimulus features. In conclusion, the differences in latency and component of the observed gating presented in this thesis, indicates that visual and auditory sensory gating are not products of the same intra-cortical mechanism. Rather the gating observed in each modality is a functionally distinct mechanism that is qualitatively analogous across modalities.
Seeking Sustainable Rock Art Tourism: The Example of the Maloti-Drakensberg Park World Heritage Site

The aim of this paper is to go beyond a binary opposition approach that pits preservation against tourism development, and to determine the ways in which tourism can contribute to the preservation of rock art sites. The results presented derive from research conducted in the region of the uKhahlamba-Drakensberg Park (UDP) of South Africa. We examine how an analysis of tourist practices and motivations can be used in the development of sustainable rock art tourism. Specific attention is paid to the identification of different types of visitors to the area, their reasons for visiting and their practices while there. Five main types of visitors were identified: 'hedonists', 'outdoor and sports tourists', 'information seekers', 'rock art enthusiasts' and 'general sightseers'. This understanding of the types of tourist visiting the UDP led us to determine a set of actions that might be taken to develop sustainable rock art tourism in the area. Finally, we consider the extent to which our approach and our recommendations hold lessons for those managing rock art in other areas.
Direct flutter and limit cycle computations of highly flexible wings for efficient analysis and optimization

The usefulness of flutter as a design metric is diluted for wings with destabilizing (softening) nonlinearities, as a stable high-amplitude limit cycle (subcritical) may exist for flight speeds well below the flutter point. It is thus desired to design aeroelastic structures such that the post-flutter behavior is as benign (i.e., supercritical) as possible, among the other constraints commonly considered in the optimization process. In order to account for these metrics in an accurate and efficient manner, direct tools are utilized to first locate the Hopf-point (flutter speed), and then to obtain a nonlinear perturbation solution via the method of multiple scales. The latter scheme provides a scalar variable whose sign and magnitude dictate the nature of the limit cycle. The accuracy of these methods is demonstrated with a high-aspect-ratio highly flexible wing, modeled with nonlinear beam finite elements and the ONERA dynamic stall tool. Stiffness and inertial design variables are allowed to vary spatially throughout the wing, in order to conduct gradient-based optimization of the limit cycle under flutter and mass constraints. The resulting wing structure demonstrates strongly supercritical behavior, as well as several design conflicts between linear (flutter) and nonlinear (limit cycles) sensitivities, which are not present in the uniform baseline wing. Published by Elsevier Ltd.
Values Underpinning STEM Education in the USA: An Analysis of the Next Generation Science Standards

The Next Generation Science Standards (NGSS) were designed to address poor science and math performance in United States schools by inculcating globally competitive science, technology, engineering, and mathematics literacies relevant to participation in future society. Considering the complex network of influences involved in the development of the NGSS, the purpose of this paper is to evaluate how educational values are embedded in the discourse of the standards. Using critical discourse analysis and content analysis, we evaluated how themes related to (i) performance, (ii) accessibility, and (iii) innovation and creativity are discursively constituted in the NGSS. Our analysis indicates the NGSS prioritizes: measurable and reproducible performances; the standards appear to be based on a conception of accessibility closely aligned with equality, and self-investment, and; innovation and creativity are discursively constituted as attributes that can be developed through specific, prescribed practices. We discuss these findings in relation to the goals of the NGSS and potential teaching and learning outcomes resulting from education based on the standards.
Molecular epidemiology of HIV-1 infection and full-length genomic analysis of circulating recombinant form 07_BC strains from injection drug users in Taiwan.

BACKGROUND Previously, we reported that there was an outbreak of human immunodeficiency virus type 1 (HIV-1) circulating recombinant form (CRF) 07_BC among injection drug users (IDUs) in Taiwan in 2004. The objectives of the present study were to conduct a molecular epidemiological analysis and to characterize the full-length genome of the Taiwanese CRF07_BC. METHODS Three hundred and fifty-eight patients with HIV-1/AIDS from hospitals and 133 HIV-1-infected inmates from detention centers were recruited. DNA sequencing and phylogenetic analysis were conducted to determine subtypes and evolutionary relationships. Recombination breakpoints of 2 full-length CRF07_BC strains were elucidated using a bootscanning method. RESULTS Of 206 HIV-1-infected patients who received a diagnosis in 2004, 44.7% were infected with subtype B, 53.4% with CRF07_BC, and 1.5% with CRF01_AE. Ninety-eight percent (109/111) of IDUs were infected with CRF07_BC. Deletions of 7-11 amino acids in both p6(gag) and p6(pol) proteins were noted among the Taiwanese CRF07_BC strains. The CRF_07BC strains belonged to 2 phylogenetic clusters, and the first cluster contained only CRF07_BC strains from the southern part of Taiwan. CONCLUSIONS The Taiwanese CRF07_BC strains had 97% full-length sequence homology with the prototype from mainland China. CRF07_BC was first introduced into the southern region in 2002 and then spread to other regions in Taiwan in 2004.
A new transmyocardial degradable stent combined with growth factor, heparin, and stem cells in acute myocardial infarction.

AIMS We developed a new method-transmyocardial drilling revascularization (TMDR) with absorbable stent incorporated with basic fibroblast growth factor (bFGF) and heparin. The present study tested the effect of this method with transplantation of bone marrow-derived stem cells (BMSCs) in acute myocardial infarction. METHODS AND RESULTS Infarction was produced in mini-swine by ligating the left anterior descending (LAD) coronary artery. TMDR of 3.0 mm in diameter was made by mechanical drilling in the infarcted area. The animals that had LAD ligation were divided into six groups according to the procedures followed (n = 6 in each): control; T (TMDR); C (cell implantation); TS (TMDR+stent implantation); TC (TMDR+cell implantation); TSC (TMDR+stent implantation+cell implantation). Left ventricular (LV) function, myocardial perfusion, vascular density, and histological and morphological analyses were evaluated pre-operatively and at 30 min and 6 weeks post-operatively. Six weeks after operation, the above indices were significantly better in the TSC group than in other groups (P < 0.001 compared with the control group, and P < 0.05 or 0.01 compared with the TS and TC groups), although TS and TC also showed better results than the control group (P < 0.05). CONCLUSION We have demonstrated in a pig model that an intramyocardial stent implanted with slow release of bFGF, heparin, and BMSC transplantation may significantly increase LV function, cardiac blood flow, and vascular density. Therefore, the present study may provide a new method for the surgical treatment of myocardial infarction.
Outrank: a Graph-Based Outlier Detection Framework Using Random Walk

This paper introduces a stochastic graph-based algorithm, called OutRank, for detecting outliers in data. We consider two approaches for constructing a graph representation of the data, based on the object similarity and number of shared neighbors between objects. The heart of this approach is the Markov chain model that is built upon this graph, which assigns an outlier score to each object. Using this framework, we show that our algorithm is more robust than the existing outlier detection schemes and can effectively address the inherent problems of such schemes. Empirical studies conducted on both real and synthetic data sets show that significant improvements in detection rate and false alarm rate are achieved using the proposed framework.
Measuring Sexual Violence on Campus: Climate Surveys and Vulnerable Groups

ABSTRACT Since the 2014 Not Alone report on campus sexual assault, the use of climate surveys to measure sexual violence on campuses across the United States has increased considerably. The current study utilizes a quasi meta-analysis approach to examine the utility of general campus climate surveys, which include a measure of sexual violence, in comparison to sexual assault specific climate surveys, in measuring student sexual assault experiences. Past research has highlighted the need to not only understand campus sexual assault prevalence rates for the general student population, but also the specific risk posed to more vulnerable populations such as the lesbian, gay, bisexual, questioning/queer community (LGBQ) and Native American students. Results indicate that general campus climate surveys may be underestimating both the sexual victimization of the general student body as well as that of LGBQ and Native American students. Research and policy recommendations that focus on improved measurement of campus sexual assault experiences are discussed.
MERIT-Infonomics Research Memorandum series The International dimension of innovation

This paper undertakes a brief evaluation of the trends in the internationalization of innovative activities. We provide a taxonomy of R&D internationalization strategies, and discuss the main relevant theoretical and empirical issues, before discussing the centripetal and centrifugal forces underlying the nature and evolution of cross border innovation. We address the issue of international technology partnering as a key strategy that is complementary to the internationalisation of innovative activities through internal means, before raising important policy dimensions that derive from these debates.
A curved multi-component aerosol hygroscopicity model framework: Part 1 Inorganic compounds

Abstract. A thermodynamic modelling framework to predict the equilibrium behaviour of mixed inorganic salt aerosols is developed, and then coupled with a technique for finding a solution to the Kohler equation in order to create a diameter dependent hygroscopic aerosol model (Aerosol Diameter Dependent Equilibrium Model – ADDEM). The model described here provides a robust and accurate inorganic basis using a mole fraction based activity coefficient model and adjusted energies of formation for treating solid precipitation. The model framework can accommodate organic components, though this added complexity is considered in a companion paper, this paper describes the development of the modelling architecture to be used and predictions of an inorganic model alone. The modelling framework has been developed to flexibly use a combination of mixing rules and other potentially more accurate techniques where available to calculate the water content. Comparisons with other state-of-the-art general equilibrium models and experimental data are presented and show excellent agreement. The Kelvin effect can be considered in this scheme using a variety of surface tension models. Comparison of predicted diameter dependent phenomena, such as the increased relative humidity for onset of deliquescence with decreasing diameter, with another diameter dependent model is very good despite the different approach used. The model is subject to various sensitivities. For the inorganic systems studied here, the model is sensitive to choice of surface tension scheme used, which decreases for larger aerosol. Large sensitivities are found for the value of dry density used. It is thus likely that the history of the aerosol studied in a hygroscopic tandem differential mobility analyser (HTDMA), specifically the nature of the drying process that will influence the final crystalline form, will create systematic uncertainties upon comparisons with theoretical predictions. However, the magnitudes of all of the above sensitivities are potentially less than those introduced when using a semi ideal growth factor analogue for certain conditions.
Looking Smart and Looking Good: Facial Cues to Intelligence and their Origins

The authors investigated accuracy of judging intelligence from facial photos of strangers across the lifespan, facial qualities contributing to accuracy, and developmental paths producing correlations between facial qualities and IQ scores. Judgments were more accurate than chance in childhood and puberty, marginally more accurate in middle adulthood, but not more accurate than chance in adolescence or late adulthood. Reliance on the valid cue of facial attractiveness could explain judges’ accuracy. Multiple developmental paths contributed to relationships between facial attractiveness and IQ: biological, environmental, influences of intelligence on attractiveness, influences of attractiveness on intelligence. The findings provide a caveat to evolutionary psychologists’ assumption that relationships between attractiveness and intelligence or other traits reflect an influence of “good genes” on both, as well as to social and developmental psychologists’ assumption that such relationships reflect self-fulfilling prophecy effects. Each of these mechanisms failed to explain some observed correlations.