1,174 research outputs found
PRODUKSI BIODIESEL DARI LUMPUR AKTIF BASAH DALAM KONDISI SUBKRITIS
Sebuah metode baru dalam mengkonversi Lumpur aktif basah menjadi biodiesel diusulkan dalam penelitian ini. Air digunakan sebagai reagen hidrolisis untuk meningkatkan ekstraksi lipid dalam Lumpur aktif dan sebagai k-atalis untuk- konversi lipid murni menjadi biodiesel dalam kondisi subkritis. Metode ini mampu mencapai konversi 90% dari FAME dalam waktu yang wajar tanpa memerlukan katalis asam/basa. Karena air digunakan sebagai katalis, proses penghilangan air tidak- lagi diperlukan. Oleh karena itu, metode ini mengurangi biaya pengolahan secara signifikan dalam produksi biodiesel dari Iumpur akti
Hydrodynamical Simulations of the Barred Spiral Galaxy NGC 1097
NGC 1097 is a nearby barred spiral galaxy believed to be interacting with the
elliptical galaxy NGC 1097A located to its northwest. It hosts a Seyfert 1
nucleus surrounded by a circumnuclear starburst ring. Two straight dust lanes
connected to the ring extend almost continuously out to the bar. The other ends
of the dust lanes attach to two main spiral arms. To provide a physical
understanding of its structural and kinematical properties, two-dimensional
hydrodynamical simulations have been carried out. Numerical calculations reveal
that many features of the gas morphology and kinematics can be reproduced
provided that the gas flow is governed by a gravitational potential associated
with a slowly rotating strong bar. By including the self-gravity of the gas
disk in our calculation, we have found the starburst ring to be gravitationally
unstable which is consistent with the observation in \citet{hsieh11}. Our
simulations show that the gas inflow rate is 0.17 M_\sun yr into the
region within the starburst ring even after its formation, leading to the
coexistence of both a nuclear ring and a circumnuclear disk.Comment: 32 pages, 14 figures, 1 table, accepted for publication in the Ap
Cross-Resolution Flow Propagation for Foveated Video Super-Resolution
The demand of high-resolution video contents has grown over the years.
However, the delivery of high-resolution video is constrained by either
computational resources required for rendering or network bandwidth for remote
transmission. To remedy this limitation, we leverage the eye trackers found
alongside existing augmented and virtual reality headsets. We propose the
application of video super-resolution (VSR) technique to fuse low-resolution
context with regional high-resolution context for resource-constrained
consumption of high-resolution content without perceivable drop in quality. Eye
trackers provide us the gaze direction of a user, aiding us in the extraction
of the regional high-resolution context. As only pixels that falls within the
gaze region can be resolved by the human eye, a large amount of the delivered
content is redundant as we can't perceive the difference in quality of the
region beyond the observed region. To generate a visually pleasing frame from
the fusion of high-resolution region and low-resolution region, we study the
capability of a deep neural network of transferring the context of the observed
region to other regions (low-resolution) of the current and future frames. We
label this task a Foveated Video Super-Resolution (FVSR), as we need to
super-resolve the low-resolution regions of current and future frames through
the fusion of pixels from the gaze region. We propose Cross-Resolution Flow
Propagation (CRFP) for FVSR. We train and evaluate CRFP on REDS dataset on the
task of 8x FVSR, i.e. a combination of 8x VSR and the fusion of foveated
region. Departing from the conventional evaluation of per frame quality using
SSIM or PSNR, we propose the evaluation of past foveated region, measuring the
capability of a model to leverage the noise present in eye trackers during
FVSR. Code is made available at https://github.com/eugenelet/CRFP.Comment: 12 pages, 8 figures, to appear in IEEE/CVF Winter Conference on
Applications of Computer Vision (WACV) 202
THE EFFECT OF PLYOMETRIC TRAINING FOR LOWER EXTREMITIES STRENGTH AND POWER IN HIGH-SCHOOL FEMALE BASKETBALL PLAYERS
Plyometric training is one of very prevailing training methods. It has its unique effect compared to other training methods. Having targeted 16 girl basketball players in senior high school, a set of box horse curriculum was designed with polymetric training for the study. The players were randomly divided into experimental groups (respectively with 30, 40, and 50 cm of box horse) and control group, four players for each group. Except for the control group, the other three groups had to receive 12 weeks of box horse training in addition to general basketball course training. The results of the study showed: Based on the plyometric training designed and applied to senior high school girl basketball players, this study shows that either CMJ or CJ has its effect
A Study of the Cognition-Action Gap in Knowledge Management
We investigated three types of volitional control mechanisms that may impact people’s knowledge management (KM) practices. Our results show that, when employing KM, people do not always perform in a manner consis- tent with their beliefs concerning attitudes and intentions. This cognition-behavior inconsistency can be ex- plained by volitional control mechanisms. Specifically, both perceived self-efficacy (Bandura 1997) and action control (Kuhl and Bechmänn 1985) play a role in motivating individuals to share and use knowledge, while perceived behavioral control does not. In addition, action/state orientation moderates a person’s enactment of subjective norm and self-efficacy beliefs into intentions just as it moderates enactment of perceived behavioral control belief into behaviors. These results have important theoretical and managerial implication
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