8 research outputs found
Effects of job stress on job performance and job satisfaction
Job stress is increasingly becoming an epidemic in the work environment. Female Nursing staff is constantly encountering trouble, crisis and conflict in the work environment prevailing in the public sector hospitals that require them to cope with. The central theme of this research study is focused on digging out the fundamental causes of job stress of female nurses. Further, how job stress affects their job
performance and job satisfaction. The study generated quantitative data which will open doors for further research in this area. This research study adopts quantitative approach using questionnaire methods. Several procedures
were applied to carry out rigorous quantitative analysis. Organizations can help reduce the overall effects of
job stress by developing and implementing prevention and intervention methods to help employees manage and cope with job stress. To reduce job stress of female nurses, this study suggests several measures along with employee’s assistance programe (EAP). This programme is focused on the employee’s total mental and physical condition. It was found that public sector hospitals are factories to manufacture stress. Female nurses experience more stress than male counterpart in the public sector hospitals. The findings of this paper revealed that job stress has negative co relation with job performance and job satisfaction
Search for light dark matter from atmosphere in PandaX-4T
We report a search for light dark matter produced through the cascading decay
of mesons, which are created as a result of inelastic collisions between
cosmic rays and Earth's atmosphere. We introduce a new and general framework,
publicly accessible, designed to address boosted dark matter specifically, with
which a full and dedicated simulation including both elastic and quasi-elastic
processes of Earth attenuation effect on the dark matter particles arriving at
the detector is performed. In the PandaX-4T commissioning data of 0.63
tonneyear exposure, no significant excess over background is observed.
The first constraints on the interaction between light dark matter generated in
the atmosphere and nucleus through a light scalar mediator are obtained. The
lowest excluded cross-section is set at for
dark matter mass of MeV and mediator mass of 300 MeV. The
lowest upper limit of to dark matter decay branching ratio is
A Search for Light Fermionic Dark Matter Absorption on Electrons in PandaX-4T
We report a search on a sub-MeV fermionic dark matter absorbed by electrons
with an outgoing active neutrino using the 0.63 tonne-year exposure collected
by PandaX-4T liquid xenon experiment. No significant signals are observed over
the expected background. The data are interpreted into limits to the effective
couplings between such dark matter and electrons. For axial-vector or vector
interactions, our sensitivity is competitive in comparison to existing
astrophysical bounds on the decay of such dark matter into photon final states.
In particular, we present the first direct detection limits for an axial-vector
(vector) interaction which are the strongest in the mass range from 25 to 45
(35 to 50) keV/c
Breast cancer management pathways during the COVID-19 pandemic: outcomes from the UK ‘Alert Level 4’ phase of the B-MaP-C study
Abstract: Background: The B-MaP-C study aimed to determine alterations to breast cancer (BC) management during the peak transmission period of the UK COVID-19 pandemic and the potential impact of these treatment decisions. Methods: This was a national cohort study of patients with early BC undergoing multidisciplinary team (MDT)-guided treatment recommendations during the pandemic, designated ‘standard’ or ‘COVID-altered’, in the preoperative, operative and post-operative setting. Findings: Of 3776 patients (from 64 UK units) in the study, 2246 (59%) had ‘COVID-altered’ management. ‘Bridging’ endocrine therapy was used (n = 951) where theatre capacity was reduced. There was increasing access to COVID-19 low-risk theatres during the study period (59%). In line with national guidance, immediate breast reconstruction was avoided (n = 299). Where adjuvant chemotherapy was omitted (n = 81), the median benefit was only 3% (IQR 2–9%) using ‘NHS Predict’. There was the rapid adoption of new evidence-based hypofractionated radiotherapy (n = 781, from 46 units). Only 14 patients (1%) tested positive for SARS-CoV-2 during their treatment journey. Conclusions: The majority of ‘COVID-altered’ management decisions were largely in line with pre-COVID evidence-based guidelines, implying that breast cancer survival outcomes are unlikely to be negatively impacted by the pandemic. However, in this study, the potential impact of delays to BC presentation or diagnosis remains unknown
Suppression of accidental backgrounds with deep neural networks in the PandaX-II experiment
The PandaX dark matter detection project searches for dark matter particles
using the technology of dual phase xenon time projection chamber. The low
expected rate of the signal events makes the control of backgrounds crucial for
the experiment success. In addition to reducing external and internal
backgrounds during the construction and operation of the detector, special
techniques are employed to suppress the background events during the data
analysis. In this article, we demonstrate the use of deep neural
networks(DNNs)for suppressing the accidental backgrounds, as an alternative to
the boosted-decision-tree method used in previous analysis of PandaX-II. A new
data preparation approach is proposed to enhance the stability of the machine
learning algorithms to be run and ultimately the sensitivity of the final data
analysis.Comment: 12 pages, 5 figures, 3 tables, version accepted by JINS
Measurement of Double Beta Decay Half-life of Xe with the PandaX-4T Detector
Precise measurement of two-neutrino double beta decay~(DBD) half-life is an
important step for the searches of Majorana neutrinos with neutrinoless
double-beta decay. We report the measurement of DBD half-life of Xe
using the PandaX-4T dual-phase Time Projection Chamber~(TPC) with 3.7-tonne
natural xenon and the first 94.9-day physics data release. The background model
in the fiducial volume is well constrained in situ by events in the outer
active region. With a Xe exposure of 15.5\,kg-year, we establish the
half-life as year. This is the first DBD half-life measurement with natural xenon
and demonstrates the physics capability of a large-scale liquid xenon TPC in
the field of rare event searches.Comment: 6 pages, 4 figure
Determination of Double Beta Decay Half-Life of 136Xe with the PandaX-4T Natural Xenon Detector
Precise measurement of two-neutrino double beta decay (DBD) half-life is an important step for the searches of Majorana neutrinos with neutrinoless double beta decay. We report the measurement of DBD half-life of 136Xe using the PandaX-4T dual-phase Time Projection Chamber (TPC) with 3.7-tonne natural xenon and the first 94.9-day physics data release. The background model in the fiducial volume is well constrained in situ by events in the outer active region. With a 136Xe exposure of 15.5 kg-year, we establish the half-life as 2.27±0.03stat.±0.10syst.×1021 years. This is the first DBD half-life measurement with natural xenon and demonstrates the physics capability of a large-scale liquid xenon TPC in the field of rare event searches