533 research outputs found
Students burn jeans in protest
Forty students and others burn a pair of jeans to protest Gay Jeans Day
Industry-Science Connections in Agriculture: Do public science collaborations and knowledge flows contribute to firm-level agricultural research productivity?
Prior research identifies a direct positive link between the stock of public scientific knowledge and agricultural productivity; however, an indirect contribution to agricultural productivity is also possible when this stock facilitates private sector invention. This study examines how “connectedness” between the stock of public scientific knowledge and private firms influences firm-level research productivity. Bibliographic information identifies the nature and degree to which firms use public agricultural science through citations and collaborations on scientific papers. Fixed effects models show that greater citations and collaborations with university researchers are associated with greater agricultural research productivity.public science, research productivity, patents, citations, collaboration, R&D, Productivity Analysis, Research and Development/Tech Change/Emerging Technologies, Q16, O31,
John H. Toole\u27s statement on the Anti-Diversion Amendment
John H. Toole\u27s statement to the Revenue and Finance Committee on the Anti-Diversion Amendment to the Montana Constitution.https://scholarworks.umt.edu/montanaconstitution/1473/thumbnail.jp
Wintertime convection and frontal interleaving in the Southern Ocean
Submitted in partial fulfillment of the requirements for the
degree of Doctor of Science at the Massachusetts Institute of Technology
and the Woods Hole Oceanographic Institution March, 1980The Southern Ocean as defined here is the body of water between the
Antarctic Continent and the Antarctic Polar Front, (APF). This ocean is
considered important in the global thermodynamic balance of the
ocean-atmosphere system because large planetary heat losses are believed
to occur at high latitudes. The ocean and atmosphere must transport
heat poleward to balance these losses. In the Southern Hemisphere, the
oceanic contribution to this flux involves a southward transport of heat
across the APF into the Southern Ocean where it is given up to the
atmosphere through air-sea interactions.
In Part I, the air-sea interactions and structure of the near
surface waters of the Southern Ocean are investigated with a three
dimensional time dependent numerical model. The surface waters in this
region in summer are characterized by a relatively warm surface mixed
layer with low salinity. Below this layer, a cold temperature extremum
is usually observed in vertical profiles which is believed to be the
remnant of a deep surface mixed layer produced in winter. The
characteristics of this layer, the surface mixed layer and the observed
distribution of wintertime sea ice are reproduced well by this model.
Unlike some other sea-ice models the air-sea heat exchange is a free
variable. Model estimates of the annual heat loss by the Southern Ocean
exhibit the observed meridional variation of heat gained by the ocean
along the APF with heat lost further south. The model's area average
heat loss is much smaller than that estimated with direct observations.
While several model parameterizations were made which could be in error,
the model results suggest that the Southern Ocean does give up vast
amounts of heat to the atmosphere away from the continental margins.
The model results and direct calculations of air-sea exchanges
suggest a southward heat flux must occur across the APF. The lateral
water mass transition across the front is not discontinuous but occurs
over a finite sized zone of fluid which is dominated by intrusive
finestructure. The characteristics and dynamics of these features are
investigated in Part II to try and assess their importance in the
meridional heat budget.
Observations made on two cruises to the APF are presented and the
space-time scales of the features and thermohaline characteristics are
discussed. It is suggested that double diffusive processes dominated by
salt fingering are active within the intrusions. An extension of
Stern's (1967) model of the stability of a thermohaline front to
intrusive finestructure driven by saltfingering where small scale
viscous processes are included, is presented to explain why intrusions
are observed in frontal zones. The model successfully predicts vertical
scales of intrusions observed in the ocean and the observed dependence
of the intrusions' slopes across density surfaces on the vertical
scale. Since the fastest growing intrusion is not strongly determined
by the model, though, it is likely that finite amplitude effects
determine the dominant scale of interleaving in the ocean.
The analysis predicts that intrusions transport heat, salt and
density down the mean gradients of the front. For the APF, this heat
flux is poleward which is the direction required by the global heat
budget. This model does not describe intrusions at finite amplitude or
in steady state and so cannot be used to estimate the magnitude of the
poleward heat flux due to intrusions in the APF.The research reported on here, and my support as a graduate student was provided by the National Science Foundation through grants OCE 75 14056. OCE 76 82036 and OCE 77 28355
Industry-science connections in agriculture : do public science collaborations and knowledge flows contribute to firm-level agricultural research productivity?
Prior research shows long-run productivity growth in agriculture is associated with increases in the stock of public scientific knowledge and private patented inventions. However, private inventions may be a function of the stock of public knowledge. In this paper, we examine the possibility that public knowledge contributes to productivity through its relationship with private sector invention. Our analysis identifies connections between the stock of public knowledge and private firm R&D and examines whether the degree of “connectedness” to public science is associated with greater firm-level research productivity in agriculture. Bibliographic information identifies the nature and degree to which firms use public agricultural science through citations and collaborations on scientific papers. Fixed effects models show that greater citations and collaborations with university researchers are associated with greater private agricultural research productivity
The Antarctic Circumpolar Current and the oceanic heat and freshwater budgets
Hydrographic sections that span the Antarctic Circumpolar Current are used to estimate the zonal heat and freshwater transports south of Africa, New Zealand and America. These in tum are used to calculate the exchanges of heat and freshwater between the three major oceans...
Fine- and microstructure observations at Fieberling Guyot : R/V New Horizon cruise report
This report describes fine- and microstructure profile data taken on a cruise to Fieberling Guyot, a seamount in the northeast
subtropical Pacific Ocean. The work performed at sea, instruments used, data return and processing procedures will be summarized
here. This cruise took place between March 4 and March 28, 1991 on the R/V New Horizon. and was part of the interdisciplinary
Accelerated Research Initiative (ARI) for Abrupt Topography sponsored by the Office of Naval Research. An overall goal of the
ARI was to understand the physical, biological, and geological processes occurring near a seamount.
The scientific objective of the Seamount Mixing Cruise was to collect data describing the oceanic fine-scale velocity and
density fields, as well as the related turbulence and mixing in the vicinity of the seamount. The High Resolution Profiler (HRP)
was deployed 95 times above and around the seamount. As well, two test dives were conducted on the way to the site, and eight
deployments completed in deep basdins off the southern California coast before returning to port. The near-synoptic surveys of
the seamount were completed with the deployment of 128 Expendable Current Profilers (XCP's). The temperature field of the
upper 760 meters of water within a 50 kilometer radius of the seamount was mapped using 144 Expendable Bathythermographs
(XBT's).Funding was provided by the Office of Naval Research through
Grant No. NOOOI4-89-J-1073
Case 1 : Deciding Value for Money: Improving Prenatal Genetic Screening in Ontario
Since 1993, the Ontario Ministry of Health and Long-Term Care (MOHLTC) has financed prenatal genetic screening through its provincial health insurance plan. In 2013, a new technology became available. Non-invasive prenatal testing (NIPT) promises improved accuracy and screening safety at a higher cost than other screening tests. Since 2013, pregnant women in Ontario have been paying for the test themselves. In March 2014, the Ministry appointed a Prenatal Genetic Screening Group (PGSG), to make recommendations on making NIPT available through the provincial health insurance plan. The Ministry requested an economic evaluation, appraising the value of NIPT
Industry-science connections in agriculture: Do public science collaborations and knowledge flows contribute to firm-level agricultural research productivity?
Prior research shows long-run productivity growth in agriculture is associated with increases in the stock of public scientific knowledge and private patented inventions. However, private inventions may be a function of the stock of public knowledge. In this paper, we examine the possibility that public knowledge contributes to productivity through its relationship with private sector invention. Our analysis identifies connections between the stock of public knowledge and private firm R&D and examines whether the degree of 'connectedness' to public science is associated with greater firm-level research productivity in agriculture. Bibliographic information identifies the nature and degree to which firms use public agricultural science through citations and collaborations on scientific papers. Fixed effects models show that greater citations and collaborations with university researchers are associated with greater private agricultural research productivity. --Public science,research productivity,patents,citations,collaboration,R&D,bibliometrics
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