5,171 research outputs found
Using Two-jet Events to Understand Hadronization
While the hard phase of the strong interaction is well described by
perturbative QCD, the soft hadronization phase is less understood. Benefiting
from the high statistics from e+e- experiments at the Z0 resonance, it is
possible to impose strong two-jet cuts on the data without loosing the
statistical significance. In these events perturbative activity is suppressed
and hadronization effects can be more prominent. We show that after proper
event cuts a set of observables are sensitive to differences in the
hadronization models. These observables can thus be important tools for a more
detailed study of the hadronization mechanism.Comment: 18 pages, 6 ps figure
Experiments to investigate particulate materials in reduced gravity fields
Study investigates agglomeration and macroscopic behavior in reduced gravity fields of particles of known properties by measuring and correlating thermal and acoustical properties of particulate materials. Experiment evaluations provide a basis for a particle behavior theory and measure bulk properties of particulate materials in reduced gravity
More on the duality correlators/amplitudes
We continue the study of n-point correlation functions of half-BPS protected
operators in N=4 super-Yang-Mills theory, in the limit where the positions of
the adjacent operators become light-like separated. We compute the l-loop
corrections by making l Lagrangian insertions. We argue that there exists a
simple relation between the (n+l)-point tree-level correlator with l Lagrangian
insertions and the integrand of the n-particle l-loop MHV scattering amplitude,
as obtained by the recent momentum twistor construction of Arkani-Hamed et al.
We present several examples of this new duality, at one and two loops.Comment: 14 pages Latex, 1 figur
The Role of Cytoplasmic mRNA Cap-Binding Protein Complexes in Trypanosoma brucei and Other Trypanosomatids.
Trypanosomatid protozoa are unusual eukaryotes that are well known for having unusual ways of controlling their gene expression. The lack of a refined mode of transcriptional control in these organisms is compensated by several post-transcriptional control mechanisms, such as control of mRNA turnover and selection of mRNA for translation, that may modulate protein synthesis in response to several environmental conditions found in different hosts. In other eukaryotes, selection of mRNA for translation is mediated by the complex eIF4F, a heterotrimeric protein complex composed by the subunits eIF4E, eIF4G, and eIF4A, where the eIF4E binds to the 5'-cap structure of mature mRNAs. In this review, we present and discuss the characteristics of six trypanosomatid eIF4E homologs and their associated proteins that form multiple eIF4F complexes. The existence of multiple eIF4F complexes in trypanosomatids evokes exquisite mechanisms for differential mRNA recognition for translation
Negotiation in strategy making teams : group support systems and the process of cognitive change
This paper reports on the use of a Group Support System (GSS) to explore at a micro level some of the processes manifested when a group is negotiating strategy-processes of social and psychological negotiation. It is based on data from a series of interventions with senior management teams of three operating companies comprising a multi-national organization, and with a joint meeting subsequently involving all of the previous participants. The meetings were concerned with negotiating a new strategy for the global organization. The research involved the analysis of detailed time series data logs that exist as a result of using a GSS that is a reflection of cognitive theory
Notes providing identification of persons and places mentioned in letter from William P. Gould to Eden Brashears, February 14, 1821
https://egrove.olemiss.edu/evans/1008/thumbnail.jp
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