Miracle-dz/UniFAR-FTUs huggingface dataset:
Childhood motocross truncal injuries: high-velocity, focal force to the chest and abdomen

Objectives To review the need for operative intervention and critical care services for motocross truncal injuries in children. Design cohort Retrospective review of patients identified via the hospital trauma registry. Setting Our Level 1 Pediatric Trauma Center serves five motocross tracks. These patients require frequent medical care for injuries. Participants All patients ≤17 years of age with truncal injuries sustained during motocross activities, between 2000 and 2011, were identified through the trauma registry. Primary and secondary outcome measures Operative intervention, intensive care unit (ICU) admission, length of stay, morbidity and demographics were reviewed. Results Motocross injured 162 children. Thirty (18.5%) were thoracic or abdominal injuries. Operative intervention was required in eight (27%) patients. Mean injury severity score (ISS) was 11.8. ICU admission was required in 50% and average hospital length of stay was 4.1 days. The most common injuries include pulmonary contusion, pneumothorax, spleen and liver lacerations. 13% of subjects suffered truncal injury from motocross on more than one occasion. Conclusions Paediatric motocross-related truncal injuries are significant. Surgical intervention is required in 27% of patients. The lower ISS incurred from motocross combined with high surgical and ICU admission rates suggests focal high-impact injuries to the chest and abdomen. Despite significant injury, 13% of motocross patients suffer recurrent injuries. Parents and children need injury prevention education.
Developing a user-oriented second language comprehensibility scale for English-medium universities

There is growing research on the linguistic features that most contribute to making second language (L2) speech easy or difficult to understand. Comprehensibility, which is usually captured through listener judgments, is increasingly viewed as integral to the L2 speaking construct. However, there are shortcomings in how this construct is operationalized in L2 speaking proficiency scales. Moreover, teachers and learners have little practical means of benefiting from research pinpointing the properties of learners’ oral performance that optimize or hinder their ability to be understood. There is thus the need for a tool to guide teachers on what to focus on in instruction in order to target more effectively the linguistic factors that matter most for being understood and to raise learners’ awareness about their abilities. To address this gap, this article reports on the development of an L2 English comprehensibility scale targeting the degree of perceived listener effort required for understanding L2 speech. The starting point was Isaacs and Trofimovich’s (2012) preliminary 3-level empirically based L2 English comprehensibility scale, restricted for use with learners from one first language (L1) background on a single task. Through focus group consultations and piloting involving nine Canada- and UK-based English for Academic Purposes teachers (target end-users) rating international university students’ speech samples drawn from Isaacs and Trofimovich’s (2011) unpublished corpus, the instrument was expanded to a 6-level scale through iterative revisions. The resulting formative assessment tool is intended for use with pre- and in-sessional university students from mixed L1 backgrounds on academic extemporaneous speaking tasks to support their oral language development.
On Taiwanese pupils’ ability to differentiate between English /l/ and /r/: A study of L1/L2 cross-language effects

Students in South East Asia often struggle with English /l/ and /r/. This study therefore set out to examine how Taiwanese pupils’ perception of these sounds is influenced by cross-language effects. Most Taiwanese students have Mandarin as L1 and Taiwanese as L2 or vice versa, and English as L3. A same–different discrimination experiment was conducted to measure pupils’ ability to discriminate between phonetically close English /r/ and /l/ and Mandarin /ʐ / and /l/. The results show that L1-Mandarin pupils discriminate both the English consonant contrast and the Mandarin consonant contrast better than L1-Taiwanese pupils. Discrimination difficulty may be higher if two members of a contrast are perceived as belonging to a single L1 category.
Aerosol size distribution and new particle formation in western Yangtze River Delta of China: two-year measurement at the SORPES station

The paper by Qi et al. discusses measurements of submicron particles (6 – 800 nm) conducted between December 2011 and November 2013 at a suburban site of East China. Particle size distributions were described as a combination of three log-normal ditributions corresponding to the nucleation (6 - 30 nm), Aitken (30 – 100 nm) and accumulation (100 – 800 nm) modes. The seasonal and diurnal variations of the particle concentration in each mode are invastigated and the influence of air masses is discussed. The occurrence of NPF is also reported, and events are classified following the commonly used classification from Dal Maso et al, (2005), which includes two main classes. Some additional information (formation and growth rates) are also provided for the strongest events, belonging to class I. Several atmospheric parameters which are typically found to influence NPF, including temperature, relative humidity, radiation, SO 2 and the condensation sink are considered in the analysis. Finally the end of the paper focusses on high nucleation frequencies observed in August 2013.
Real-time RGB-D based people detection and tracking for mobile robots and head-worn cameras

We present a real-time RGB-D based multiperson detection and tracking system suitable for mobile robots and head-worn cameras. Our approach combines RGB-D visual odometry estimation, region-of-interest processing, ground plane estimation, pedestrian detection, and multi-hypothesis tracking components into a robust vision system that runs at more than 20fps on a laptop. As object detection is the most expensive component in any such integration, we invest significant effort into taking maximum advantage of the available depth information. In particular, we propose to use two different detectors for different distance ranges. For the close range (up to 5-7m), we present an extremely fast depth-based upper-body detector that allows video-rate system performance on a single CPU core when applied to Kinect sensors. In order to cover also farther distance ranges, we optionally add an appearance-based full-body HOG detector (running on the GPU) that exploits scene geometry to restrict the search space. Our approach can work with both Kinect RGB-D input for indoor settings and with stereo depth input for outdoor scenarios. We quantitatively evaluate our approach on challenging indoor and outdoor sequences and show state-of-the-art performance in a large variety of settings. Our code is publicly available.
The Effect of Learning Strategy, Achievement Motivation, and Communication Skill toward Learning Outcomes on the Course PMPIPS-SD at PGSD

The Effect of Instructional Strategies, Achievement Motivation, and Communication Skills toward Learning Outcomes of PGSD on PGSD. The purpose of this research were to compare the effectiveness of the use of instructional strategies, achievement motivation, and communication skills of PGSD students in the PMPIPS-SD subject. A quasi-experimental research with pretest-posttest nonequivalent control group design was carried out to achieve the goals. The data were analyzed by three-way ANOVA with SPSS 16,0 for windows. The research result showed that the learning outcomes students of the PMPIPS-SD subject taught by using PK-IK strategy was better than that using PN-DK strategy, the students who had high achievement motivation better than who had low one, the students who had high communication skills better than who had low one.
Improved subspace clustering via exploitation of spatial constraints

We present a novel approach to improving subspace clustering by exploiting the spatial constraints. The new method encourages the sparse solution to be consistent with the spatial geometry of the tracked points, by embedding weights into the sparse formulation. By doing so, we are able to correct sparse representations in a principled manner without introducing much additional computational cost. We discuss alternative ways to treat the missing and corrupted data using the latest theory in robust lasso regression and suggest numerical algorithms so solve the proposed formulation. The experiments on the benchmark Johns Hopkins 155 dataset demonstrate that exploiting spatial constraints significantly improves motion segmentation.
Ten principles of good business process management

Purpose – The purpose of this paper is to foster a common understanding of business process management (BPM) by proposing a set of ten principles that characterize BPM as a research domain and guide its successful use in organizational practice. Design/methodology/approach – The identification and discussion of the principles reflects the viewpoint, which was informed by extant literature and focus groups, including 20 BPM experts from academia and practice. Findings – The authors identify ten principles which represent a set of capabilities essential for mastering contemporary and future challenges in BPM. Their antonyms signify potential roadblocks and bad practices in BPM. The authors also identify a set of open research questions that can guide future BPM research. Research limitations/implications – The findings suggest several areas of research regarding each of the identified principles of good BPM. Also, the principles themselves should be systematically and empirically examined in future studies.
Uni- and multisensory brain areas are synchronised across spectators when watching unedited dance recordings

The superior temporal sulcus (STS) and gyrus (STG) are commonly identified to be functionally relevant for multisensory integration of audiovisual (AV) stimuli. However, most neuroimaging studies on AV integration used stimuli of short duration in explicit evaluative tasks. Importantly though, many of our AV experiences are of a long duration and ambiguous. It is unclear if the enhanced activity in audio, visual, and AV brain areas would also be synchronised over time across subjects when they are exposed to such multisensory stimuli. We used intersubject correlation to investigate which brain areas are synchronised across novices for uni- and multisensory versions of a 6-min 26-s recording of an unfamiliar, unedited Indian dance recording (Bharatanatyam). In Bharatanatyam, music and dance are choreographed together in a highly intermodal-dependent manner. Activity in the middle and posterior STG was significantly correlated between subjects and showed also significant enhancement for AV integration when the functional magnetic resonance signals were contrasted against each other using a general linear model conjunction analysis. These results extend previous studies by showing an intermediate step of synchronisation for novices: while there was a consensus across subjects' brain activity in areas relevant for unisensory processing and AV integration of related audio and visual stimuli, we found no evidence for synchronisation of higher level cognitive processes, suggesting these were idiosyncratic.
The Modified Dynamics is Conducive to Galactic Warp Formation

There is an effect in the modified dynamics that is conducive to the formation of warps. Because of the nonlinearity of the theory, the internal dynamics of a galaxy is affected by a perturber over and above possible tidal effects. For example, a relatively distant and light companion or the mean influence of a parent cluster, with negligible tidal effects, could still produce a significant warp in the outer part of a galactic disk. We present results of numerical calculations for simplified models that show, for instance, that a satellite with the (baryonic) mass and distance of the Magellanic Clouds can distort the axisymmetric field of the Milky Way enough to produce a warp of the magnitude (and position) observed. Details of the warp geometry remain to be explained; we use a static configuration that can produce only warps with a straight line of nodes. In more realistic simulations, one must reckon with the motion of the perturbing body, which sometimes occurs on timescales not much longer than the response time of the disk.
Effects of challenging games on manipulative motor skills of 4–6 years old children: an application of challenge point framework

ABSTRACT The present study aimed to investigate the predictions of challenge point theory (2004) by comparing challenging and non-challenging games groups in developing manipulative fundamental motor skills. Thirty children, aged 4–6 years, from one of the kindergartens of Tehran were divided into the groups. The games were similar in both groups; however, the challenge of these games increased in the challenging group, while it was fixed in the non-challenging group. The sample received two 42-minute intervention sessions per week for 8 weeks and the children’s skills were assessed by TGMD-2. The results of MANOVA indicated there was no significant difference between the groups in manipulative skills and all subscales except catching, in which the challenging group outperformed the non-challenging group. In conclusion, although the predictions of the challenge point theory were not confirmed, improvement of the challenging group in catching indicated more effectiveness of this method in complex skills.
A Predictor-Corrector Technique for Visualizing Unsteady Flow

Presents a method for visualizing unsteady flow by displaying its vortices. The vortices are identified by using a vorticity-predictor pressure-corrector scheme that follows vortex cores. The cross-sections of a vortex at each point along the core can be represented by a Fourier series. A vortex can be faithfully reconstructed from the series as a simple quadrilateral mesh, or its reconstruction can be enhanced to indicate helical motion. The mesh can reduce the representation of the flow features by a factor of 1000 or more compared with the volumetric dataset. With this amount of reduction, it is possible to implement an interactive system on a graphics workstation to permit a viewer to examine, in 3D, the evolution of the vortical structures in a complex, unsteady flow. >
SWAT: Model Use, Calibration, and Validation

SWAT (Soil and Water Assessment Tool) is a comprehensive, semi-distributed river basin model that requires a large number of input parameters, which complicates model parameterization and calibration. Several calibration techniques have been developed for SWAT, including manual calibration procedures and automated procedures using the shuffled complex evolution method and other common methods. In addition, SWAT-CUP was recently developed and provides a decision-making framework that incorporates a semi-automated approach (SUFI2) using both manual and automated calibration and incorporating sensitivity and uncertainty analysis. In SWAT-CUP, users can manually adjust parameters and ranges iteratively between autocalibration runs. Parameter sensitivity analysis helps focus the calibration and uncertainty analysis and is used to provide statistics for goodness-of-fit. The user interaction or manual component of the SWAT-CUP calibration forces the user to obtain a better understanding of the overall hydrologic processes (e.g., baseflow ratios, ET, sediment sources and sinks, crop yields, and nutrient balances) and of parameter sensitivity. It is important for future calibration developments to spatially account for hydrologic processes; improve model run time efficiency; include the impact of uncertainty in the conceptual model, model parameters, and measured variables used in calibration; and assist users in checking for model errors. When calibrating a physically based model like SWAT, it is important to remember that all model input parameters must be kept within a realistic uncertainty range and that no automatic procedure can substitute for actual physical knowledge of the watershed.
Evaluation of virtual fixtures for a robot programming by demonstration interface

We investigate the effectiveness of several types of virtual fixtures in a robot programming by demonstration interface. We show that while all types of virtual fixtures examined yield a significant reduction in the number of errors in tight tolerance peg-in-hole tasks, color and sound fixtures generally outperform a tactile fixture in terms of both execution time of successful trials and error rate. We have found also that when users perceive that the task is very difficult but the system is providing some help by means of a virtual fixture, they tend to spend more time trying to achieve a successful task execution. Thus, for difficult tasks the benefits of virtual fixturing are better reflected in a reduction of the error rate than in a decreased execution time. We conjecture that these trends are related to the limitations of currently available interfaces for human-robot interaction through virtual environments and to the different strategies adopted by the users to cope with such limitations in high-accuracy tasks.
NVM Compression - Hybrid Flash-Aware Application Level Compression

This paper describes NVM Compression, a novel hybrid technique that combines application level compression with flash awareness for optimal performance and storage efficiency. Utilizing new interface primitives exported by Flash Translation Layers (FTLs), we leverage the garbage collection available in flash devices to optimize the capacity management required by compression systems. We implement NVM Compression in the popular open source database MariaDB based on Oracle MySQLand use variants of commonly available POSIX file system interfaces to provide the extended FTL capabilities to the user space application. The experimental results show that the hybrid approach of NVM Compression can improve compression performance by 2-3x, deliver compression performance for flash devices that is within 5% of uncompressed performance (and sometimes exceed uncompressed performance due to less data writes), improve storage efficiency by 19% compared to legacy Row compression method, reduce data writes by up to 4x when combined with other flash aware techniques such as Atomic Writes, and deliver further advantages in power efficiency and CPU utilization.
Clade D Symbiodinium in Scleractinian Corals: A “Nugget” of Hope, a Selfish Opportunist, an Ominous Sign, or All of the Above?

Clade D Symbiodinium are thermally tolerant coral endosymbionts that confer resistance to elevated sea surface temperature and bleaching to the host. The union between corals and clade D is thus important to management and coral conservation. Here, we review the diversity and biogeography of clade D Symbiodinium, factors linked to increasing abundances of clade D, and the benefits and drawbacks of associating with clade D for corals. We identify clade D Symbiodinium as uncommon pandemically distributed generalists found in higher abundances on reefs exposed to challenging sea surface temperatures and local stressors or with a history of bleaching. This distribution suggests that clade D Symbiodinium are mostly opportunistic endosymbionts, whereby they outcompete and replace optimal symbionts in health-compromised corals. We conclude by identifying research gaps that limit our understanding of the adaptive role clade D Symbiodinium play in corals and discuss the utility of monitoring clade D Symbiodinium as indicators of habitat degradation in coral reef ecosystems.
Arrangements of human telomere DNA quadruplex in physiologically relevant K+ solutions

The arrangement of the human telomeric quadruplex in physiologically relevant conditions has not yet been unambiguously determined. Our spectroscopic results suggest that the core quadruplex sequence G3(TTAG3)3 forms an antiparallel quadruplex of the same basket type in solution containing either K or Na ions. Analogous sequences extended by flanking nucleotides form a mixture of the antiparallel and hybrid (3 + 1) quadruplexes in K-containing solutions. We, however, show that long telomeric DNA behaves in the same way as the basic G3(TTAG3)3 motif. Both G3(TTAG3)3 and long telomeric DNA are also able to adopt the (3 + 1) quadruplex structure: Molecular crowding conditions, simulated here by ethanol, induced a slow transition of the K-stabilized quadruplex into the hybrid quadruplex structure and then into a parallel quadruplex arrangement at increased temperatures. Most importantly, we demonstrate that the same transitions can be induced even in aqueous, K-containing solution by increasing the DNA concentration. This is why distinct quadruplex structures were detected for AG3(TTAG3)3 by X-ray, nuclear magnetic resonance and circular dichrosim spectroscopy: Depending on DNA concentration, the human telomeric DNA can adopt the antiparallel quadruplex, the (3 + 1) structure, or the parallel quadruplex in physiologically relevant concentrations of K ions.
Monitoring the Effect of Metal Ions on the Mobility of Artemia salina Nauplii

This study aims to measure the effect of toxic aqueous solutions of metals on the mobility of Artemia salina nauplii by using digital image processing. The instrument consists of a camera with a macro lens, a dark chamber, a light source and a laptop computer. Four nauplii were inserted into a macro cuvette, which contained copper, cadmium, iron and zinc ions at various concentrations. The nauplii were then filmed inside the dark chamber for two minutes and the video sequence was processed by a motion tracking algorithm that estimated their mobility. The results obtained by this system were compared to the mortality assay of the Artemia salina nauplii. Despite the small number of tested organisms, this system demonstrates great sensitivity in quantifying the mobility of the nauplii, which leads to significantly lower EC50 values than those of the mortality assay. Furthermore, concentrations of parts per trillion of toxic compounds could be detected for some of the metals. The main novelty of this instrument relies in the sub-pixel accuracy of the tracking algorithm that enables robust measurement of the deterioration of the mobility of Artemia salina even at very low concentrations of toxic metals.
Macrovertebrate Paleontology and the Pliocene Habitat of Ardipithecus ramidus

A diverse assemblage of large mammals is spatially and stratigraphically associated with Ardipithecus ramidus at Aramis. The most common species are tragelaphine antelope and colobine monkeys. Analyses of their postcranial remains situate them in a closed habitat. Assessment of dental mesowear, microwear, and stable isotopes from these and a wider range of abundant associated larger mammals indicates that the local habitat at Aramis was predominantly woodland. The Ar. ramidus enamel isotope values indicate a minimal C4 vegetation component in its diet (plants using the C4 photosynthetic pathway), which is consistent with predominantly forest/woodland feeding. Although the Early Pliocene Afar included a range of environments, and the local environment at Aramis and its vicinity ranged from forests to wooded grasslands, the integration of available physical and biological evidence establishes Ar. ramidus as a denizen of the closed habitats along this continuum.