2,583 research outputs found
Impact of PCV10 on nasopharyngeal carriage in children in Pakistan
No full textThis data set is from the study "Direct and indirect effect of 10 valent pneumococcal vaccines on the nasopharyngeal carriage in children under 2 years of age in Matiari, Pakistan" published in the journal Vaccine which can be accessed from Nisar MI, Ahmed S, Jehan F, Shahid S, Shakoor S, Kabir F, Hotwani A, Munir S, Muhammad S, Khalid F, Althouse B, Hu H, Whitney C, Rodgers G, Klugman K, Ali A, Zaidi AKM, Omer SB, Iqbal N. Direct and indirect effect of 10 valent pneumococcal vaccines on the nasopharyngeal carriage in children under 2 years of age in Matiari, Pakistan. Vaccine. 2021 Jan 6:S0264-410X(20)31662-5. DOI: 10.1016/j.vaccine.2020.12.066. Epub ahead of print. PMID: 33422379. Data was collected for a time-series cross-sectional study exploring the impact of 10-valent Pneumococcal Conjugate Vaccine (PCV10) on nasopharyngeal (NP) carriage in children under 2 years of age from a rural population in Sindh, Pakistan. The study was carried out in two union councils of Matiari - Khyber and Shah Alam Shah Jee Wasi (Latitude 25.680298 / Longitude 68.502711). Data was collected on socio-demographics, clinical characteristics, and vaccination status using an android phone-based application. NP samples were collected using standard World Health Organisation (WHO) techniques, culture and serotyping were done using sequential Multiplex PCR described by the Centre for Disease Control, USA. We looked at the carriage rate of vaccine-type (VT) and non-vaccine type (NVT) serotypes over time in vaccinated and unvaccinated children. We additionally looked at the predictors for pneumococcal carriage. The study showed a high overall pneumococcal carriage in a large sample of 3140 children enrolled from a rural setting in Pakistan over a period of four years. Vaccine type carriage decreased both in the vaccinated and unvaccinated population indicating herd immunity
Subjectivity in Incentive Pay
No full textI investigate the determinants and effects of subjectivity in incentive pay. New forms of incentive pay are increasingly being introduced by company management – for example, bonuses are now linked to wider business goals, such as quality and customer service, company reputation and employee hiring and retention policies, replacing the traditional focus on output or profit measures. A new conceptual work on subjectivity is used to evaluate these incentive pay practices. The analysis shows that a variety of contextual factors influence the organizations to make greater use of subjectivity in incentive pay. I also discuss the performance effects of subjectivity
Design and analysis of DLS steel/composite thick-adhernd adhesive joints
No full textThe paper describes experimental and numerical techniques to study the structural design and behaviourof thick-adherend DLS joints that are based on steel /steel and steel/composites and epoxy adhesives, withfocus on long overlap joints. A standard fabrication method was followed to produce 60 specimens of
various dimensions and materials
Fabrication, Testing and Analysis of Steel/Composite DLS Adhesive Joints
No full textThis paper aims to provide a guide on the design and fabrication of thick adherend double lap shear joints (DLS), often referred to as butt connections/joints in ship structures including patch repair. The specimens consist of 10mm steel inner adherend and various outer adherend materials including 0/90 WR GFRP and 0/90 UD CFRP laminates and steel. The focus here is on CFRP/steel joint due to availability of test data. The thickness of the outer adherend varies from 3 mm to 6 mm. Shear overlaps of 25-200mm were considered. The overall objectives are (i) to assess the quality of the standard fabrication method, (ii) to determine joint strength and overlap plateau for various specimens with a range of material combinations and (iii) to understand aspects of failure and design of joint under quasi-static loading. The paper presents experimental and numerical details with key conclusions
Fabrication, testing and analysis of steel/composite DLS adhesive joints
No full textThis paper describes experimental and numerical techniques to study the structural design of double lap shear joints that are based on thick-adherend steel/steel and steel/composite, with epoxy adhesive. A standard practical fabrication method was used to produce specimens of various dimensions and materials. These specimens consist of 10 mm steel inner adherend and various outer adherend materials including composite and steel of various thicknesses and overlaps. The composite is largely based on carbon fibre reinforced plastic. The specimens were tested under monotonic tensile loading and the results showed that joint strength depends largely on materials combination and overlap length. The testing also included the use of an advanced imaging system to determine failure initiation and propagation. Two-dimensional finite element analysis (FEA) stress models were applied and showed the importance of modelling the composite layers adjacent to the adhesive bondline in order to account for the critical local stresses. The FEA results also showed that overall shear stress distributions can be used to characterise joint failure. The paper presents the experimental and numerical details with key conclusions
Search for violation in decays and observation of the Cabibbo-suppressed decay
No full textWe search for violation by measuring a -odd asymmetry in the
Cabibbo-suppressed decay, and
in the Cabibbo-favored and
decays. We use 980 of data collected by the Belle detector running at the KEKB
asymmetric-energy collider. The -violating -odd parameter
is measured to be
and
where the first
uncertainty is statistical and the second is systematic. We also report the
first observation of the Cabibbo-suppressed decay . The branching fraction is measured relative to
that of the analogous Cabibbo-favored decay :
Measurement of the branching fractions for Cabibbo-suppressed decays D+→K+K−π+π0 and D(s)+→K+π−π+π0 at Belle
No full textWe present measurements of the branching fractions for the singly Cabibbo-suppressed decays D+→K+K−π+π0 and D+s→K+π−π+π0, and the doubly Cabibbo-suppressed decay D+→K+π−π+π0, based on 980 fb−1 of data recorded by the Belle experiment at the KEKB e+e− collider. We measure these modes relative to the Cabibbo-favored modes D+→K−π+π+π0 and D+s→K+K−π+π0. Our results for the ratios of branching fractions are B(D+→K+K−π+π0)/B(D+→K−π+π+π0)=(11.32±0.13±0.26)%, B(D+→K+π−π+π0)/B(D+→K−π+π+π0)=(1.68±0.11±0.03)%, and B(D+s→K+π−π+π0)/B(D+s→K+K−π+π0)=(17.13±0.62±0.51)%, where the uncertainties are statistical and systematic, respectively. The second value corresponds to (5.83±0.42)×tan4θC, where θC is the Cabibbo angle; this value is larger than other measured ratios of branching fractions for a doubly Cabibbo-suppressed charm decay to a Cabibbo-favored decay. Multiplying these results by world average values for B(D+→K−π+π+π0) and B(D+s→K+K−π+π0) yields B(D+→K+K−π+π0)=(7.08±0.08±0.16±0.20)×10^−3, B(D+→K+π−π+π0)=(1.05±0.07±0.02±0.03)×10^−3, and B(D+s→K+π−π+π0)=(9.44±0.34±0.28±0.32)×10^−3, where the third uncertainty is due to the branching fraction of the normalization mode. The first two results are consistent with, but more precise than, the current world averages. The last result is the first measurement of this branching fraction
Angular analysis of the low K+K− invariant mass enhancement in B+→K+K−π+ decays
No full textWe study the decay B+→K+K−π+ and investigate the angular distribution of K+K− pairs with invariant mass below 1.1 GeV/c2. This region exhibits both a strong enhancement in signal and very large direct CP violation. We construct a coherent sum model for the angular distribution of S- and P-wave, and report the ratio of their amplitudes, the relative phase and the forward-backward asymmetry. We also report absolute differential branching fractions and direct CP asymmetry for the decay in bins of MK+K− and the differential branching fractions in bins of MK+π−. The results are based on a data sample that contains 772×10^6 BB ̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. The measured overall branching fraction and the direct CP asymmetry are (5.38±0.40±0.35)×10^−6 and −0.170±0.073±0.017, respectively, where the first uncertainties are statistical and the second are systematic
Angular analysis of the low K+ K- invariant mass enhancement in B+ →K+ K- π+ decays
No full textWe study the decay B+→K+K-π+ and investigate the angular distribution of K+K- pairs with invariant mass below 1.1 GeV/c2. This region exhibits both a strong enhancement in signal and very large direct CP violation. We construct a coherent sum model for the angular distribution of the S- and P-wave, and report the ratio of their amplitudes, the relative phase and the forward-backward asymmetry. We also report absolute differential branching fractions and direct CP asymmetry for the decay in bins of MK+K- and the differential branching fractions in bins of MK+π-. The results are based on a data sample that contains 772×106 BB ̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The result favors the presence of S- and D-waves in low MK+K- region to the detriment of a P-wave
First Observation of and Signals near the Mass Threshold in Decay
No full textUsing the data sample of 980 fb collected with the Belle detector
operating at the KEKB asymmetric-energy collider, we present the
results of an investigation of the and invariant
mass distributions looking for substructure in the decay
. We find a significant signal in
each mass dis\ tribution. When interpreted as resonances, we find for the
() combination a mass of MeV/ [ MeV/], an intrinsic width of MeV/ [ MeV/] with a significance of
7.5 (6.2). As these two signals are very close to the
threshold, we also investigate the possibility of a cusp,
and find that \ we cannot discriminate between these two interpretations due to
the limited size of the data sample
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