894 research outputs found
Satellite Remote Sensing and Field Studies on Narrowing of Three Sea Mouths of Pulicat Lake Sanctuary and Ecological Impact
Source: ICHE Conference Archive - https://mdi-de.baw.de/icheArchiv
Study on Information need and Seeking Behavior of the Health Science Students of an Indian Deemed University
Objective: The objective of this study was to find out the study habit of health science students by using library of SIKSHA ‘O’ ANUSANDHAN University, Bhubaneswar. Methods: All the information are collected form students of four health science institutions of this University (N=420). All data were analyzed with the help of SPSS 20 software.
Results: This study found the use of e-resources for information retrieval by the students regularly or daily through internet /e-library which is higher than other retrieval process. Text, reference books and e-journals are also cited frequently by the students.
Conclusions: Though popular, ordinal rankings cannot adequately describe the multidimensional nature of health science students’ attitude on seeking information. This study provides statistics that can be used in conjunction with other sound methodologies to provide a more authentic view on this matter. The large variance of the collected data suggests that refining seeking behavior by discipline, peer groups, or journal information may provide a more precise assessment
Evaluation of the accuracy, precision and validity of hydrophylic vinyl polysiloxane impression material for bite mark analysis
The present study was undertaken to assess the accuracy, precision and validity of hydrophilic Vinyl Poly Siloxane [VPS] impression material for bite mark documentation and analysis. Medium body VPS impressions of maxillary and mandibular anterior teeth among thirty subjects
were taken and dental stone casts prepared. Hollow volume overlays were made and
metric analysis was done using advanced imaging software like Adobe Photoshop - 9 and Image J. These values were compared to the measurements taken from bite mark impressions of the same 30 individuals on wax wafers using light body VPS material. The mean differences in the parameters measured by the different techniques were compared using Intra Class Correlation
Coefficients [ICCC]. Additionally validity parameters such as sensitivity, specificity,
positive and negative predictive value were computed
A Ring Shaped Embedded Young Stellar (Proto)Cluster
We present sub-arcsec (FWHM ~ 0.5") J, H, K and L' images of a young stellar
cluster associated with a candidate massive protostar IRAS22134+5834. The
observations reveal a centrally symmetric, flattened cluster enclosing a
central dark region. The central dark region is possibly a cavity within the
flattened cluster. It is surrounded by a ring composed of 5 bright stars and
the candidate massive protostar IRAS22134+5834. We construct JHKL' color-color
and HK color-magnitude diagrams to identify the young stellar objects and
estimate their spectral types. All the bright stars in the ring are found to
have intrinsic infrared excess emission and are likely to be early to late B
type stars. We estimate an average foreground extinction to the cluster of A_v
\~ 5mag and individual extinctions to the bright stars in the range A_v ~
20-40mag indicating possible cocoons surrounding each massive star. This ring
of bright stars is devoid of any HII region. It is surrounded by an embedded
cluster making this an example of a (proto)cluster that is in one of the
dynamically least relaxed states. These observations are consistent with the
recent non-axisymmetric calculations of Li & Nakamura, who present a star
formation scenario in which a magnetically subcritical cloud fragments into
multiple magnetically supercritical cores, leading to the formation of small
stellar groups.Comment: 13 pages in preprint format, 3 figures, 1 tabl
Extra-articular arthroscopic release of lateral epicondylitis: a prospective study
Background: Operative management of lateral epicondylitis can be managed with percutaneous, arthroscopic, or open surgical release. Extraarticular arthroscopic release is a new technique, and no study has compared its outcomes and risk profile.
Methods: A 26-patient cohort was reviewed before and after extraarticular arthroscopic release, which was performed by the senior author. The Mayo Elbow Performance Scores were used as a functional outcome score and obtained via a phone interview. Results were analyzed using a paired t-test with a statistical significance set at P \u3c .05.
Results: Of the 26 patients, 10 were being treated under workers compensation. Preoperative Mayo Elbow Performance Score was 47.5, and the postoperative score was 90.2 with a significant difference of 42.7 (P value 1⁄4 .05). The workers compensation group scored 13.3 points lower postoperatively than the remainder of patients, which was shown to also be significant with a P value of .002.
Discussion and Conclusion: The advantage of extraarticular arthroscopic release was better visualiza- tion of affected structures, which improved accuracy of debridement, and a small capsulotomy, which decreased the risk of a transient radial nerve palsy. Overall, extraarticular arthroscopic results were found to be good and comparable to the results of other operative techniques with the added advantage of a lower risk profile
Small optic suspensions for Advanced LIGO input optics and other precision optical experiments
We report on the design and performance of small optic suspensions developed
to suppress seismic motion of out-of-cavity optics in the Input Optics
subsystem of the Advanced LIGO interferometric gravitational wave detector.
These compact single stage suspensions provide isolation in all six degrees of
freedom of the optic, local sensing and actuation in three of them, and passive
damping for the other three
Evidence for weak antilocalization-weak localization crossover and metal-insulator transition in CaCuRuO thin films
Artificial confinement of electrons by tailoring the layer thickness has
turned out to be a powerful tool to harness control over competing phases in
nano-layers of complex oxides. We investigate the effect of dimensionality on
transport properties of -electron based heavy-fermion metal
CaCuRuO. Transport behavior evolves from metallic to
localized regime upon reducing thickness and a metal insulator transition is
observed below 3 nm film thickness for which sheet resistance crosses k, the quantum resistance in 2D. Magnetotransport study
reveals a strong interplay between inelastic and spin-orbit scattering lengths
upon reducing thickness, which results in weak antilocalization (WAL) to weak
localization (WL) crossover in magnetoconductance.Comment: 10 pages, 4 figure
COMBINED ANALYSIS OF RADARSAT-2 SAR AND SENTINEL-2 OPTICAL DATA FOR IMPROVED MONITORING OF TUBER INITIATION STAGE OF POTATO
Tuber initiation and tuber bulking stages are critical part of various phenological phases for potato production. Tuber initiation covers the period from the formation of spherical rhizome ends, the flowering and the start of tuber bulking. In general, the tuberization spans from 3 to 5 weeks after emergence and ends with the row closer i.e. canopies in adjacent rows touch each other across the furrow. Hence, this rapid growth seeks critical agronomic management practices such as irrigation and fertilization. It majorly influences the growth of stems, foliar area, dry weight and number of tubers particularly at the phase of tuber initiation. During these phenological stages, potato crops are susceptible to the infestation of late blight diseases caused by Phytophthora infestans and largely affects the potato production. Thus identifying the crop risk using remote sensing approaches can provide an efficient potato growth monitoring framework. In the context of monitoring crop dynamics, quad-pol Synthetic Aperture Radar (SAR) data has proven to be effective due to its sensitivity towards dielectric and geometric properties. In addition to SAR data, optical remote sensing data derived vegetation information can provide an improved insight into crop growth when combined with SAR data. In this research, quad-pol RADARSAT-2 and Sentinel-2 optical data are analyzed to monitor potato tuberization phase over Bardhaman district in the state ofWest Bengal, which is one of the major potato growing regions in India. The proposed approach uses polarimetric parameters such as backscatter intensities, ratio (HH/VV, VH/VV, linear depolarization ratio), and co-pol correlation (ρHH–VV) along with the vegetation indices derived from the Sentinel-2 data for understanding the spatio-temporal dynamics. The initial results show a promising accuracy in monitoring the dynamics of potato tuberization. Integration of such earth observation (EO) data, in conjunction with in-situ field measurements, might significantly enhance the current capabilities for crop monitoring
Sustainable optimizing WMN performance through meta-heuristic TDMA link scheduling and routing
Wireless mesh networks (WMNs) have become a popular solution for expanding internet service and communication in both urban and rural areas. However, the performance of WMNs depends on generating optimized time-division multiple access (TDMA) schedules, which distribute time into a list of slots called superframes. This study proposes novel meta-heuristic algorithms to generate TDMA link schedules in WMNs using two different interference/constraint models: multi-transmit-receive (MTR) and full-duplex (FD). The objectives of this study are to optimize the TDMA frame for packet transmission, satisfy the constraints, and minimize the end-to-end delay. The significant contributions of this study are: (1) proposing effective and efficient heuristic solutions to solve the NP-complete problem of generating optimal TDMA link schedules in WMNs; (2) investigating the new FD interference model to improve the network capacity above the physical layer. To achieve these objectives and contributions, the study uses two popular meta-heuristics, the artificial bee colony (ABC) and/or genetic algorithm (GA), to solve the known NP-complete problems of joint scheduling, power control, and rate control. The results of this study show that the proposed algorithms can generate optimized TDMA link schedules for both MTR and FD models. The joint routing and scheduling approach further minimizes end-to-end delay while maintaining the schedule's minimum length and/or maximum capacity. The proposed solution outperforms the existing solutions in terms of the number of active links, end-to-end delay, and network capacity. The research aims to improve the efficiency and effectiveness of WMNs in most applications that require high throughput and fast response time
Parity-Violating Electron Scattering from 4He and the Strange Electric Form Factor of the Nucleon
We have measured the parity-violating electroweak asymmetry in the elastic
scattering of polarized electrons from ^4He at an average scattering angle
= 5.7 degrees and a four-momentum transfer Q^2 = 0.091 GeV^2. From
these data, for the first time, the strange electric form factor of the nucleon
G^s_E can be isolated. The measured asymmetry of A_PV = (6.72 +/- 0.84 (stat)
+/- 0.21 (syst) parts per million yields a value of G^s_E = -0.038 +/- 0.042
(stat) +/- 0.010 (syst), consistent with zero
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