427 research outputs found
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Promoting metalinguistic awareness through peer response in writing in elementary English as a foreign language
This project serves as a resource to help teachers understand and meet the educational needs of second-language learners by promoting their metalinguistic awareness through peer response in writing in elementary English as a foreign language
Search for serendipitous TNO occultation in X-rays
To study the population properties of small, remote objects beyond Neptune's
orbit in the outer solar system, of kilometer size or smaller, serendipitous
occultation search is so far the only way. For hectometer-sized Trans-Neptunian
Objects (TNOs), optical shadows actually disappear because of diffraction.
Observations at shorter wave lengths are needed. Here we report the effort of
TNO occultation search in X-rays using RXTE/PCA data of Sco X-1 taken from June
2007 to October 2011. No definite TNO occultation events were found in the 334
ks data. We investigate the detection efficiency dependence on the TNO size to
better define the sensible size range of our approach and suggest upper limits
to the TNO size distribution in the size range from 30 m to 300 m. A list of
X-ray sources suitable for future larger facilities to observe is proposed.Comment: Accepted to publish in MNRA
Alternative Ingredient Recommendation: A Co-occurrence and Ingredient Category Importance Based Approach
As many people will refer to a recipe when cooking, there are several recipe-sharing websites that include lots of recipes and make recipes easier to access than before. However, there is often the case that we could not get all the ingredients listed on the recipe. Prior research on alternative ingredient substitution has built a recommendation system considering the suitability of a recommended ingredient with the remained ingredients. In this paper, in addition to suitability, we also take the diversity of the ingredient categories and the novelty of new combination of ingredients into account. Besides, we combine suitability with novelty as an index, to see whether our method could help find out a new combination of ingredients that is possibly to be a new dish. Our evaluation results show that our proposed method attains a comparable or even better performance on each perspective
Poly[(ÎŒ6-benzene-1,3,5-tricarboxylÂato-Îș6 O 1:O 1âČ:O 3:O 3âČ:O 5:O 5âČ)trisÂ(N,N-dimethylÂformamide-ÎșO)trisÂ(ÎŒ3-formato-Îș2 O:OâČ)trimagnesium(II)]
The title complex, [Mg3(CHO2)3(C9H3O6)(C3H7NO)3]n, exhibÂits a two-dimensional structure parallel to (001), which is built up from the MgII atoms and bridging carboxylÂate ligands (3 symmetry). The MgII atom is six-coordinated by one O atom from a dimethylÂformamide molÂecule, two O atoms from two ÎŒ6-benzene-1,3,5-tricarboxylÂate ligands and three O atoms from three ÎŒ3-formate ligands in a distorted octaÂhedral geometry
Plasma soluble vascular endothelial growth factor receptor-1 levels predict outcomes of pneumonia-related septic shock patients: a prospective observational study
Millisecond dips in the 2007-2009 RXTE/PCA lightcurve of Sco X-1 and one possible occultation event
Serendipitous stellar occultation search is so far the only way to detect the
existence of very small, very dim, remote objects in the solar system. To date,
however, there are only very few reported detections for trans-Neptunian
objects (TNOs) in optical bands. In the X-ray band, with the RXTE/PCA data of
Sco X-1 taken from June 2007 to October 2009, we found one possible X-ray
occultation event. We discuss the veracity and properties of this event, and
suggest upper limits to the size distribution of TNOs at hectometer size and of
Main-Belt Asteroids (MBAs) at decameter size.Comment: 8 pages, 5 figures, to appear in MNRAS (accepted on Sep. 10, 2010
Robotic Pick-and-Place of Novel Objects in Clutter with Multi-Affordance Grasping and Cross-Domain Image Matching
This paper presents a robotic pick-and-place system that is capable of
grasping and recognizing both known and novel objects in cluttered
environments. The key new feature of the system is that it handles a wide range
of object categories without needing any task-specific training data for novel
objects. To achieve this, it first uses a category-agnostic affordance
prediction algorithm to select and execute among four different grasping
primitive behaviors. It then recognizes picked objects with a cross-domain
image classification framework that matches observed images to product images.
Since product images are readily available for a wide range of objects (e.g.,
from the web), the system works out-of-the-box for novel objects without
requiring any additional training data. Exhaustive experimental results
demonstrate that our multi-affordance grasping achieves high success rates for
a wide variety of objects in clutter, and our recognition algorithm achieves
high accuracy for both known and novel grasped objects. The approach was part
of the MIT-Princeton Team system that took 1st place in the stowing task at the
2017 Amazon Robotics Challenge. All code, datasets, and pre-trained models are
available online at http://arc.cs.princeton.eduComment: Project webpage: http://arc.cs.princeton.edu Summary video:
https://youtu.be/6fG7zwGfIk
âI canât see an end in sight.â How the COVID-19 pandemic may influence suicide risk: a qualitative study
<jats:p> Zusammenfassung: Theoretischer Hintergrund: Das Ziel der vorliegenden Studie war es, eine deutschsprachige Adaptation der Bergen Study Addiction Scale (BStAS), einer Skala zur Erfassung von exzessivem Studierverhalten, zu entwickeln und zu validieren. Methode: Die Daten von 615 Studierenden wurden analysiert. Die DimensionalitĂ€t der BStAS wurde mittels konfirmatorischer Faktorenanalyse ĂŒberprĂŒft. AuĂerdem wurden Korrelations- und hierarchische Regressionsanalysen durchgefĂŒhrt, um ZusammenhĂ€nge von exzessivem Studierverhalten mit Persönlichkeit und Gesundheit zu untersuchen. Ergebnisse: Der Vergleich mit Dynamic Fit Index Cutoffs deutete auf eine moderate Missspezifikation des einfaktoriellen Modells hin. Wie erwartet war exzessives Studierverhalten positiv mit wöchentlichen Lernstunden, Neurotizismus, wahrgenommenem Stress, psychosomatischen Beschwerden und Schlafproblemen assoziiert und hing negativ mit Lebenszufriedenheit zusammen. Schlussfolgerung: Es ist fraglich, ob alle Items der BStAS Aspekte einer Verhaltenssucht erfassen. Die Ergebnisse legen dennoch nahe, dass die BStAS ein Studierverhalten misst, das in Bezug auf physische und psychische Gesundheit von Relevanz ist. </jats:p>
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