569 research outputs found
Agricultural Banking and Early Warning Models for the Bank Failures of the Late 2000s Great Recession
This paper is designed to validate if the agricultural sector can once again be labeled as an instigator of the late-2000s Great Recession using the early warning models technique. The empirical results indicate that exposure to agribusiness operations does not necessarily enhance a banks’ tendency to fail.Agricultural Banking, Early warning signals, In-sample accuracy, Out-of-sample forecasting, Agricultural Finance, Research Methods/ Statistical Methods, G21, G32, G33, C01,
The Influence of Buying vs. Receiving an IT-based Device on User Commitment
IT-based mobile devices (i.e., smart devices), especially those with health monitoring features, are popular gifts. However, little is known about a recipient’s commitment to using the smart device when it is obtained as a gift. To explore the influence of gift- giving on user perceptions and usage, three studies are reported. These studies build on the IT use literature, the gift-giving literature, and social exchange theory to investigate whether and how gift-giving leads to device commitment. Specifically, we found two contextual factor – receiving the smart device as a gift (versus buying for yourself) and providing emotional support when giving the gift – can increase recipients’ symbolic of the smart device. Additionally, recipients’ cognitive value of the smart device negatively moderates the effect of symbolic value on device commitment. The results provide novel insight into the relationship between IT use and gift-giving and provide implications for future research and the smart device industry
Snapshots of sequential polyphosphide rearrangement upon metallatetrylene addition
Insertion and functionalization of gallasilylenes [LSi–Ga(Cl)L] (L = PhC(NtBu); L = [{2,6-iPrCHNCMe}CH]) into the cyclo-E rings of [Cp*Fe(η-E)] (Cp* = η-CMe; E = P, As) are reported. Reactions of [Cp*Fe(η-E)] with gallasilylene result in E–E/Si–Ga bond cleavage and the insertion of the silylene in the cyclo-E rings. [(LSi-Ga(Cl)L){(η-P)FeCp*}], in which the Si atom binds to the bent cyclo-P ring, was identified as a reaction intermediate. The ring-expansion products are stable at room temperature, while isomerization occurred at higher temperature, and the silylene moiety further migrates to the Fe atom, forming the corresponding ring-construction isomers. Furthermore, reaction of [Cp*Fe(η-As)] with the heavier gallagermylene [LLGe–Ga(Cl)LB] was also investigated. All the isolated complexes represent rare examples of mixed group 13/14 iron polypnictogenides, which could only be synthesized by taking advantage of the cooperativity of the gallatetrylenes featuring low-valent Si(II) or Ge(II) and Lewis acidic Ga(III) units/entities
Non-Abelian Collective Excitations in Unlinearized Quark-Gluon Plasma Media
We study the effect of unlinearized medium on the collective excitations in
quark-gluon plasma. We present two kinds of non-Abelian oscillation solutions
which respectively correspond to weakly and strongly nonlinear coupling of
field components in color space. We also show that the weakly nonlinear
solution is similar to Abelian-like one but has the frequency shift, which is
of order , from eigenfrequency.Comment: 7 page
Biphasic bisperoxovanadium administration and Schwann cell transplantation for repair after cervical contusive spinal cord injury
Schwann cells (SCs) hold promise for spinal cord injury (SCI) repair; however, there are limitations for its use as a lone treatment. We showed that acute inhibition of the phosphatase and tensin homolog deleted on chromosome ten (PTEN) by bisperoxovanadium (bpV) was neuroprotective and enhanced function following cervical hemicontusion SCI. We hypothesized that combining acute bpV therapy and delayed SC engraftment would further improve neuroprotection and recovery after cervical SCI. Adult female Sprague-Dawley (SD) rats were randomly sorted into 5 groups: sham, vehicle, bpV, SC transplantation, and bpV+SC transplantation. SCs were isolated from adult green fluorescent protein (GFP)-expressing SD rats (GFP-SCs). 200 ÎĽg/kg bpV(pic) was administered intraperitoneally (IP) twice daily for 7 days post-SCI in bpV-treated groups. GFP-SCs (1Ă—10(6) in 5 ÎĽl medium) were transplanted into the lesion epicenter at the 8th day post-SCI. Forelimb function was tested for 10 weeks and histology was assessed. bpV alone significantly reduced lesion (by 40%, p<0.05) and cavitation (by 65%, p<0.05) and improved functional recovery (p<0.05) compared to injury alone. The combination promoted similar neuroprotection (p<0.01 vs. injury); however, GFP-SCs alone did not. Both SC-transplanted groups exhibited remarkable long-term SC survival, SMI-31(+) axon ingrowth and RECA-1(+) vasculature presence in the SC graft; however, bpV+SCs promoted an 89% greater axon-to-lesion ratio than SCs only. We concluded that bpV likely contributed largely to the neuroprotective and functional benefits while SCs facilitated considerable host-tissue interaction and modification. The combination of the two shows promise as an attractive strategy to enhance recovery after SCI
The charged-hadron/pion ratio at the Relativistic Heavy Ion Collider
The hadron/pion ratio is calculated in 200 GeV AuAu collisions at
midrapidity, applying pQCD and non-universal transverse-momentum broadening.
Arguments are presented for such non-universality, and the idea is implemented
in a model, which explains the enhancement of the hadron/pion ratio in central
AuAu collisions. The model also describes the qualitative difference between
the recently-measured dAu nuclear enhancement factors for pions and charged
hadrons.Comment: 4 pages, 3 figure
Nuclear Effects on Heavy Boson Production at RHIC and LHC
We predict W and Z transverse momentum distributions from proton-proton and
nuclear collisions at RHIC and LHC. A resummation formalism with power
corrections to the renormalization group equations is used. The dependence of
the resummed QCD results on the non-perturbative input is very weak for the
systems considered. Shadowing effects are discussed and found to be unimportant
at RHIC, but important for LHC. We study the enhancement of power corrections
due to multiple scattering in nuclear collisions and numerically illustrate the
weak effects of the dependence on the nuclear mass.Comment: 21 pages, 11 figure
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