2,033 research outputs found
Individual leader to interdependent leadership: A case study in leadership development and tripartite evaluation
This article is available open access through the publisher’s website at the link below. Copyright @ 2013 Sage Publications.The Problem - In this case study we see a move away from orthodox views of school leadership as “headship” to a more contemporary model of educational leadership wherein we note a departure from functional, curricula-based school leadership toward more human resource development (HRD) approaches. The aim of this study was to consider the effectiveness of an educational development program for middle leaders within an educational establishment.
The Solution - We examined the impact of a bespoke higher education leadership development intervention in Leadership (and Change) on the formation and cohesiveness of a newly formed innovative leadership structure.
The Stakeholders - The leadership development intervention was designed through a tripartite collaboration including a university, senior school leaders, and staff. The intervention was designed to shift leadership from individual leader agency to interdependent human leadership agency. Through tripartite evaluation we uncover leadership development praxis that transcends the boundaries of conventional educational leadership and reemphasizes the benefits of bridging the academic/practitioner divide and the application of theory to praxis
Rapid retreat of permafrost coastline observed with aerial drone photogrammetry
Permafrost landscapes are changing around the Arctic in response to climate
warming, with coastal erosion being one of the most prominent and hazardous
features. Using drone platforms, satellite images, and historic aerial
photographs, we observed the rapid retreat of a permafrost coastline on
Qikiqtaruk – Herschel Island, Yukon Territory, in the Canadian Beaufort Sea.
This coastline is adjacent to a gravel spit accommodating several culturally
significant sites and is the logistical base for the Qikiqtaruk – Herschel
Island Territorial Park operations. In this study we sought to (i) assess
short-term coastal erosion dynamics over fine temporal resolution,
(ii) evaluate short-term shoreline change in the context of long-term
observations, and (iii) demonstrate the potential of low-cost lightweight
unmanned aerial vehicles (“drones”) to inform coastline studies and
management decisions. We resurveyed a 500 m permafrost coastal reach at high
temporal frequency (seven surveys over 40 d in 2017). Intra-seasonal
shoreline changes were related to meteorological and oceanographic variables
to understand controls on intra-seasonal erosion patterns. To put our
short-term observations into historical context, we combined our analysis of
shoreline positions in 2016 and 2017 with historical observations from 1952,
1970, 2000, and 2011. In just the summer of 2017, we observed coastal retreat
of 14.5 m, more than 6 times faster than the long-term average rate of
2.2±0.1 m a−1 (1952–2017). Coastline retreat rates exceeded
1.0±0.1 m d−1 over a single 4 d period. Over 40 d, we estimated
removal of ca. 0.96 m3 m−1 d−1. These findings highlight
the episodic nature of shoreline change and the important role of storm
events, which are poorly understood along permafrost coastlines. We found
drone surveys combined with image-based modelling yield fine spatial
resolution and accurately geolocated observations that are highly suitable to
observe intra-seasonal erosion dynamics in rapidly changing Arctic
landscapes.</p
Improved survival in patients with peritoneal metastases from colorectal cancer: a preliminary study
Dephosphorylation of YB-1 is Required for Nuclear Localisation During G2 Phase of the Cell Cycle
Elevated levels of nuclear Y-box binding protein 1 (YB-1) are linked to poor prognosis in cancer. It has been proposed that entry into the nucleus requires specific proteasomal cleavage. However, evidence for cleavage is contradictory and high YB-1 levels are prognostic regardless of cellular location. Here, using confocal microscopy and mass spectrometry, we find no evidence of specific proteolytic cleavage. Doxorubicin treatment, and the resultant G2 arrest, leads to a significant increase in the number of cells where YB-1 is not found in the cytoplasm, suggesting that its cellular localisation is variable during the cell cycle. Live cell imaging reveals that the location of YB-1 is linked to progression through the cell cycle. Primarily perinuclear during G1 and S phases, YB-1 enters the nucleus as cells transition through late G2/M and exits at the completion of mitosis. Atomistic modelling and molecular dynamics simulations show that dephosphorylation of YB-1 at serine residues 102, 165 and 176 increases the accessibility of the nuclear localisation signal (NLS). We propose that this conformational change facilitates nuclear entry during late G2/M. Thus, the phosphorylation status of YB-1 determines its cellular location
Measurement of the Branching Fraction of the Decay in Fully Reconstructed Events at Belle
We present an analysis of the exclusive
decay, where represents an
electron or a muon, with the assumption of charge-conjugation symmetry and
lepton universality. The analysis uses the full data sample
collected by the Belle detector, corresponding to 711 fb of integrated
luminosity. We select the events by fully reconstructing one meson in
hadronic decay modes, subsequently determining the properties of the other
meson. We extract the signal yields using a binned maximum-likelihood fit to
the missing-mass squared distribution in bins of the invariant mass of the two
pions or the momentum transfer squared. We measure a total branching fraction
of , where the
uncertainties are statistical and systematic, respectively. This result is the
first reported measurement of this decay.Comment: 23 pages, 19 figure
Measurement of the CKM Matrix Element from at Belle
We present a new measurement of the CKM matrix element from decays, reconstructed with the full Belle data set
of integrated luminosity. Two form factor
parameterizations, originally conceived by the Caprini-Lellouch-Neubert (CLN)
and the Boyd, Grinstein and Lebed (BGL) groups, are used to extract the product
and the decay form factors, where
is the normalization factor and is a small
electroweak correction. In the CLN parameterization we find
, , , . For the BGL parameterization we
obtain , which is consistent with the World Average when correcting for
. The branching fraction of is measured to be . We also present a new
test of lepton flavor universality violation in semileptonic decays,
. The errors correspond to the statistical and
systematic uncertainties respectively. This is the most precise measurement of
and form factors to date and the first
experimental study of the BGL form factor parameterization in an experimental
measurement
Evidence for a vector charmonium-like state in
We report the measurement of via
initial-state radiation using a data sample of an integrated luminosity of
921.9 fb collected with the Belle detector at the and
nearby. We find evidence for an enhancement with a 3.4 significance in
the invariant mass of The measured mass and width
are
and ,
respectively. The mass, width, and quantum numbers of this enhancement are
consistent with the charmonium-like state at 4626 MeV/ recently reported
by Belle in The product of the cross section and the branching fraction of
is measured from
threshold to 5.6 GeV.Comment: 9 pages, 4 figure
Inclusive study of bottomonium production in association with an meson in annihilations near
We study bottomonium production in association with an meson in
annihilations near the , at a center of mass energy of
GeV. The results are based on the fb data
sample collected by the Belle experiment at the asymmetric energy KEKB
collider. Only the meson is reconstructed and the missing-mass spectrum
of candidates is investigated. We observe the
process and find evidence for the
process, while no significant signals of
, , nor are found. Cross sections for the
studied processes are reported.Comment: Submitted to EPJ-
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