Low temperature stimulates spatial molecular reprogramming of the Arabidopsis seed germination programme

The timing of the germination of seeds is highly responsive to inputs from the environment. Temperature plays a key role in the control of germination, with low temperatures acting to stimulate this developmental transition in many species. In Arabidopsis, extensive gene expression changes have been reported at the whole seed level in response to cold, while much less is known about their spatial distribution across the diverse cell types of the embryo. In this study we examined the spatiotemporal patterns of promoter activity and protein abundance for key gibberellic acid (GA) and abscisic acid (ABA) factors which regulate the decision to germinate both during a time course of germination and in response to cold. Low temperature stimulated the spatial relocalization of these factors to the vasculature. The response of these seeds to dormancy-breaking stratification treatments therefore stimulates the distribution of both positive (GA) and negatively acting (ABA) components to this same cell type. This altered spatial pattern persisted following the transfer of seeds to 22°C, as well as after their rehydration, indicating that this alteration is persistent. These observations suggest that the vasculature plays a role in the low temperature-mediated stimulation of germination in this species, while novel cell types are recruited to promote germination in response to stratification

Further all-loop results in softly-broken supersymmetric gauge theories

It is proven that the recently found, renormalization-group invariant sum rule for the soft scalar masses in softly-broken N=1 supersymmetric gauge-Yukawa unified theories can be extended to all orders in perturbation theory. In the case of finite unified theories, the sum rule ensures the all-loop finiteness in the soft supersymmetry breaking sector. As a byproduct the exact $\beta$ function for the soft scalar masses in the Novikov-Shifman-Vainstein-Zakharov (NSVZ) scheme for softly-broken supersymmetric QCD is obtained. It is also found that the singularity appearing in the sum rule in the NSVZ scheme exactly coincides with that which has been previously found in a certain class of superstring models in which the massive string states are organized into $N = 4$ supermultiplets.Comment: 14 page

Algorithmic Based Fault Tolerance Applied to High Performance Computing

We present a new approach to fault tolerance for High Performance Computing system. Our approach is based on a careful adaptation of the Algorithmic Based Fault Tolerance technique (Huang and Abraham, 1984) to the need of parallel distributed computation. We obtain a strongly scalable mechanism for fault tolerance. We can also detect and correct errors (bit-flip) on the fly of a computation. To assess the viability of our approach, we have developed a fault tolerant matrix-matrix multiplication subroutine and we propose some models to predict its running time. Our parallel fault-tolerant matrix-matrix multiplication scores 1.4 TFLOPS on 484 processors (cluster jacquard.nersc.gov) and returns a correct result while one process failure has happened. This represents 65% of the machine peak efficiency and less than 12% overhead with respect to the fastest failure-free implementation. We predict (and have observed) that, as we increase the processor count, the overhead of the fault tolerance drops significantly

Dashboard indicators for the Northeast Ohio economy: prepared for the Fund for Our Economic Future

The Fund for Our Economic Future (The Fund) is a multiyear collaborative effort “to encourage and advance a common and highly focused regional economic development agenda that can lead to a long-term economic transformation of the Northeast Ohio (NEO) economy.” One of the strategies pursued by the Fund is to create and regularly update Dashboard Indicators for the Northeast Ohio Regional Economy. The Dashboard is intended to provide a framework for understanding the regional economic process and to track the region’s economic progress. This report presents the methodology used to construct and design the dashboard. The Federal Reserve Bank of Cleveland is publishing this paper as part of our working paper series in order to further academic discussion of regional economic growth factors.Regional economics ; Economic development ; Economic conditions - Ohio

Software Patents on Both Sides of the Atlantic, 23 J. Marshall J. Computer & Info. L. 815 (2005)

This comment addresses and analyzes the state of software patentability in the United States (“U.S.”) and European Union (“E.U.”). This comment discusses policies that drive changes and developments in patent law, the technical background of software, and the non-patent intellectual property protection for software. The comment further addresses the judicial precedent and the situation surrounding software patents in the U.S. and the legal situation in the E.U., including proposed changes in the Software Patent Directive. Finally, the article discusses common criticisms of current U.S. policies on software patentability by exposing the problems created by these policies and suggests corrective policies in the future

The construction and evaluation of a course of study in firearms safety education

Includes experimental edition of the resulting manual "Firearms Safety Education" put out by the New Hampshire State Department of Education. Thesis (Ed.D.)--Boston Universit

Perturbative Unification of Soft Supersymmetry--Breaking Terms

Perturbative unification of soft supersymmetry--breaking (SSB) parameters is proposed in Gauge-Yukawa unified models. The method, which can be applied in any finite order in perturbation theory, consists in searching for renormalization group invariant relations among the SSB parameters, which are consistent with perturbative renormalizability. For the minimal Gauge-Yukawa unified model based on $SU(5)$ we find that the low energy SSB sector contains a single arbitrary parameter, the unified gaugino mass. Within a certain approximation we find that the model predicts a superpartner spectrum which is consistent with the experimental data.Comment: 14 page

What\u27s The Good Of Moonlight When You Haven\u27t Got A Girl To Love

https://digitalcommons.library.umaine.edu/mmb-vp/3409/thumbnail.jp

Searching for Virtue in the City: Bell and Her Sisters

The burden of our claim here is that virtue in the city is to be found not so much in the abstractions and theorizing of higher philosophy but in “vulgar ethics,” Lewis C. Mainzer’s brilliant description of moral education in the classroom and street-level moral practices in the city’s departments and agencies (1991). The hope of virtue in the city is to be found not just in the individual propensity to be virtuous but more so in the development of political and organizational rules and procedures, in virtuous leadership, and in the development of virtuous public cultures