1,951 research outputs found
Lloyd C. Everson of Dunseith: Germany, World War II
North Dakota Prisoner of War Report by Lloyd Everson (1924-1997) of Dunseith. Everson was a POW of Germany in the Second World War.
18 page
South Dakota\u27s Big Sioux and Vermillion River Basins: Economic Value of Irrigation Water
The primary objective of this study was to estimate the value of water used for irrigation in the Big Sioux and Vermillion river basins of eastern South Dakota. These estimates were made by imputing a residual value of water. Data were acquired through personal interviews with irrigators in the study area which was partitioned into two rainfall regions and two soil areas per rainfall region. Crop enterprise budgets were derived from the data and used to calculate net returns to management and water. These figures were compared with net returns to management from dryland farming obtained from secondary sources to arrive at the final water value estimates
Minkowski compactness measure
This is the author accepted manuscript. The final version is available from the publisher via the DOI in this record.Published in: Computational Intelligence (UKCI), 2013, 13th UK Workshop, Guildford UK.
Date of Conference: 9-11 Sept. 2013Many compactness measures are available in the
literature. In this paper we present a generalised compactness
measure Cq(S) which unifies previously existing definitions of
compactness. The new measure is based on Minkowski distances
and incorporates a parameter q which modifies the behaviour of
the compactness measure. Different shapes are considered to be
most compact depending on the value of q: for q = 2, the most
compact shape in 2D (3D) is a circle (a sphere); for q → ∞,
the most compact shape is a square (a cube); and for q = 1, the
most compact shape is a square (a octahedron).
For a given shape S, measure Cq(S) can be understood as a
function of q and as such it is possible to calculate a spectum of
Cq(S) for a range of q. This produces a particular compactness
signature for the shape S, which provides additional shape
information.
The experiments section of this paper provides illustrative
examples where measure Cq(S) is applied to various shapes and
describes how measure and its spectrum can be used for image
processing applications
Lawn Seed or Grass Seed- Which Do You Buy?
Only about a third of the lawn seed and grass seed mixtures offered for sale for lawn seeding purposes last year in nine of the state\u27s larger cities were suitable for establishing even-textured, fine-leaved lawns
Are there hopeless neighborhoods? An exploration of environmental associations between individual-level feelings of hopelessness and neighborhood characteristics
http://deepblue.lib.umich.edu/bitstream/2027.42/109742/1/Are there hopeless .pd
The Bayesian Decision Tree Technique with a Sweeping Strategy
The uncertainty of classification outcomes is of crucial importance for many
safety critical applications including, for example, medical diagnostics. In
such applications the uncertainty of classification can be reliably estimated
within a Bayesian model averaging technique that allows the use of prior
information. Decision Tree (DT) classification models used within such a
technique gives experts additional information by making this classification
scheme observable. The use of the Markov Chain Monte Carlo (MCMC) methodology
of stochastic sampling makes the Bayesian DT technique feasible to perform.
However, in practice, the MCMC technique may become stuck in a particular DT
which is far away from a region with a maximal posterior. Sampling such DTs
causes bias in the posterior estimates, and as a result the evaluation of
classification uncertainty may be incorrect. In a particular case, the negative
effect of such sampling may be reduced by giving additional prior information
on the shape of DTs. In this paper we describe a new approach based on sweeping
the DTs without additional priors on the favorite shape of DTs. The
performances of Bayesian DT techniques with the standard and sweeping
strategies are compared on a synthetic data as well as on real datasets.
Quantitatively evaluating the uncertainty in terms of entropy of class
posterior probabilities, we found that the sweeping strategy is superior to the
standard strategy
Mortality in a Migrating Mennonite Church Congregation
Preston\u27s two-census method of demographic estimation is applied to three pairs of reconstructed censuses from the records of a migrating Mennonite church congregation covering the period 1780-1890, The three pairs of censuses correspond to three periods (1780-1790, 1850-1860, and 1880-1890) and to stays in three settings (Prussia, Russia, and Kansas, respectively). The Mennonites\u27 stay in Prussia was a period of hardship. In Russia they expanded their economic base and developed new farming methods, dramatically increasing their productivity. The Mennonites took these skills to Kansas, where they continued to be successful. The increase in life expectancy at age 5 corroborates this picture. The Prussian period exhibits the shortest life expectancy for both sexes. After the move to Russia, life expectancy increased for both sexes and continued to increase with the move to Kansas. The model also provides limited evidence for fertility depression following the move to Kansas
The hydrological characterisation and water budget of a South African rehabilitated headwater wetland system
This paper presents a synopsis of the findings of a valley bottom wetland monitoring study in which dominant hydrological processes maintaining the system are quantitatively defined. The Craigieburn-Manalana is a wetland subjected to technical rehabilitation, at the headwaters of the Sand River in the lowveld savanna region of South Africa.Findings include the identification of a rapid water delivery mechanism from the surrounding hillslopes to the wetland following a threshold-exceeding precipitation event, when hillslope-toe soil matric potential is close to 0, leading to a raising of the wetland water table by >0.7 m within 3 h. A summary of quantified fluxes and associated water budget of the wetland and its contributing catchment is developed. It is revealed that this wetland does not necessarily conform to the typical assumptions that wetlands augment low flows. Surface layer scintillometry shows actual wetland evapotranspiration to dominate the water budget during the dry season (2.3–3.5 mm/d) compared to its contributing catchment (0.9–2.2 mm/d), whilst stream discharge had ceased. Hydrograph separation, based on stable isotopes (18O), revealed that the wetland does not attenuate peak flows during the summer rains when the wetlands soil moisture deficit is close to 0, since more than 66% of stream discharge comprised event water. These results are discussed within the context of current hydrological understanding of southern African headwater wetlands, such as dambos.Keywords: hillslope processes, hydro-geomorphology, water budget, dambos, rehabilitation, wetland
Systolic blood pressure reactions to acute stress are associated with future hypertension status in the Dutch Famine Birth Cohort Study
These analyses examined the association between blood pressure reactions to acute psychological stress and subsequent hypertension status in a substantial Dutch cohort. Blood pressure was recorded during a resting baseline and during three acute stress tasks, Stroop colour word, mirror tracing and speech. Five years later, diagnosed hypertension status was determined by questionnaire. Participants were 453 (237 women) members of the Dutch Famine Birth Cohort. In analysis adjusting for a number of potential confounders, systolic blood pressure reactivity was positively related to future hypertension. This was the case irrespective of whether reactivity was calculated as the peak or the average response to the stress tasks. The association was strongest for reactions to the speech and Stroop tasks. Diastolic blood pressure reactivity was not significantly associated with hypertension. The results provide support for the reactivity hypothesis. \ud
\u
- …