1,642 research outputs found
Extracting Spooky-activation-at-a-distance from Considerations of Entanglement
Following an early claim by Nelson & McEvoy \cite{Nelson:McEvoy:2007}
suggesting that word associations can display `spooky action at a distance
behaviour', a serious investigation of the potentially quantum nature of such
associations is currently underway. This paper presents a simple quantum model
of a word association system. It is shown that a quantum model of word
entanglement can recover aspects of both the Spreading Activation equation and
the Spooky-activation-at-a-distance equation, both of which are used to model
the activation level of words in human memory.Comment: 13 pages, 2 figures; To appear in Proceedings of the Third Quantum
Interaction Symposium, Lecture Notes in Artificial Intelligence, vol 5494,
Springer, 200
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Mapping and ordered cloning of the human X chromosome
Progress is reported on gathering X chromosome specific libraries and integrating those with the library produced in this project. Further studies on understanding Fragile X Syndrome and other hereditary diseases related to the X chromosome are described. (DT
Sprinkler and surface irrigation effects on return flow water quality and quantity
A major conservation practice in the Upper Snake-Rock (USR) watershed is the conversion
from furrow irrigation to sprinkler irrigation. We compared the effect of irrigation system type on water
quality and quantity at the watershed scale. Six small watersheds (150-700 ha) were identified with 5 to
70% of the cropland sprinkler irrigated and the remaining fields surface or furrow irrigated. Other
agricultural land uses, cropping practices and soils were similar among watersheds. Water quality and
quantity entering and exiting each watershed were measured with automated samplers during the irrigation
season. Irrigation inflow to watersheds and outflow from watersheds did not decrease as sprinkler irrigated
area increased. This probably results from the flow rate allocation system used on the Twin Falls irrigation
tract. Annual sediment loss (r=-0.19, P=0.40) and concentration (r=-0.38, P=0.30) also did not correlate
with the relative amount of sprinkler irrigated area. Annual sediment loss (r-0.87, P=0.03) and
concentration (r-0.84, P=0.05) correlated with irrigation inflow—the more irrigation water delivered to a
watershed the greater the outflow sediment concentration and loss. These preliminary results indicate that
irrigation water delivery should be managed in addition to converting to sprinkler irrigation to improve
water quality in this irrigated watershed
Water balance for a predominantly surface irrigated district in southern Idaho
Water quantity and quality are being measured in an 82,000 ha irrigation district in
southern Idaho to determine the effects of conservation practices, primarily
conversion from furrow to sprinkler irrigation, for the Conservation Effects
Assessment Project (CEAP). The percentage of sprinkler irrigated land has steadily
increased from about 10% in 1990 to more than 30% in 2005. The objective of this
study was to calculate a preliminary water and soluble salt balance for April through
November, 2005. The water balance was calculated by subtracting measured outflow
and estimated crop water use from measured inflow and precipitation. Precipitation
was about 250% of normal in April and May, which delayed irrigation for many
crops and probably increased the amount of return flow during these months. Water
diverted for irrigation was 82% of the total water input to the irrigation district
(inflow plus precipitation). Precipitation contributed 16% of the total input. Thirty-six
percent of the diverted water left the irrigation district as surface return flow from
April through November. This percentage will increase on an annual basis because
return flow continues through the winter months after irrigation diversions have
ceased. The irrigation district was a source of suspended sediment and a sink for
soluble salts. April through November 2005 monitoring showed a net gain of 1620 kg
ha-1 of soluble salts in the irrigation district, which could be a long-term concern if
these salts accumulate in the root zone. Net sediment loss was 102 kg ha -1 , which is
less than the 461 kg ha-1 measured during a similar study in 1971. These preliminary
results indicate that converting to sprinkler irrigation, along with other conservation
practices, has reduced sediment loss from this irrigation district. However, solid
conclusions cannot be made until at least one year of monitoring is complete to
adequately characterize annual trends, particularly the quantity and quality of non-irrigation
season return flows
Passive Immunization of Piglets with Hyperimmune Plasma Containing Virus Neutralizing Antibodies to Porcine Reproductive and Respiratory Syndrome Virus
Polyvalent hyperimmune plasma (HP) with high-titers of virus neutralizing (VN) antibody to porcine reproductive and respiratory syndrome virus (PRRSV) strains was produced in gilts and used to passively immunize 3 week old piglets. The piglets were subsequently challenged with live virus. Results showed delay of viremia, decrease in live virus titers, decrease in gross lung lesions, or delay in transmission to naïve, non-immunized sentinel pigs
Conservation practice effectiveness in the irrigated Upper Snake/Rock Creek watershed
The Upper Snake River/Rock Creek Conservation Effects Assessment Project was initiated in 2005 to determine the effectiveness of conservation practices in an irrigated watershed. Our objectives were to determine water and salt balances and water quality effects of using sprinkler rather than furrow irrigation in the Twin Falls irrigation tract in southern Idaho. Data from the current study were compared with earlier studies conducted from 1968 to 1971. Irrigation water diverted from the Snake River supplied 73% and 83% of the hydrologic input to this 82,000 ha (202,000 ac) watershed in 2005 and 2006, respectively, with approximately 40% flowing back to the Snake River through furrow irrigation runoff, unused irrigation water, and subsurface drainage. Net suspended sediment loss decreased from 460 kg ha–1 (400 lb ac–1) during the 1971 irrigation season to 220 kg ha–1 (190 lb ac–1) in 2005 and 10 kg ha–1 (9 lb ac–1) in 2006 by switching from furrow to sprinkler irrigation, applying polyacylamide, and installing sediment ponds. The relative amount of sprinkler irrigation in a subwatershed did not correlate with the total loss of suspended sediment for July 2005 and 2006 (r = 0.12). The lack of correlation was primarily due to extremely high sediment concentrations in two of the five subwatersheds, possibly due to furrow irrigation management. Two potential concerns identified during this initial analysis were an accumulation of total salts in the watershed and increased nitrate concentrations in four return flow streams compared to earlier studies. Future analyses will determine the effects of specific practices with this watershed
Soil and Nutrient Losses from Small Sprinkler and Furrow Irrigated Watersheds in Southern Idaho
Sediment and associated nutrients flowing to the Snake River with furrow irrigation runoff and unused irrigation water have been a concern in the Twin Falls irrigation tract in southern Idaho. Converting furrow irrigated fields to sprinkler irrigation is one practice that has been promoted, and received financial assistance, to reduce sediment loss. Five small watersheds (330 to 1480 acres) with 10 to 70% sprinkler irrigation were monitored from 2005 to 2008 to determine if converting to sprinkler irrigation reduced sediment and nutrient losses from these watersheds. Eliminating runoff from furrow irrigated fields by converting to sprinkler irrigation will reduce sediment and nutrient losses from fields. However, there were no significant correlations between the amount of sprinkler irrigation and the sediment or nutrient loads from these watersheds. Potential reasons for these results are the flow rate allocation system used by the TFCC, the amount and location of furrow irrigated fields in each watershed, and the management of furrow irrigated fields within each watershed. One significant correlation was decreasing dissolved phosphorus concentrations as relative amount of sprinkler irrigated land increased, presumably because less water flowed across fields in furrows as sprinkler irrigated area increased. A water quality model for irrigated watersheds is needed for more thorough assessment of the variety conditions and management practices within these watersheds
The IUCF Cooler Project
This research was sponsored by the National Science Foundation Grant NSF PHY 87-1440
Entanglement of Conceptual Entities in Quantum Model Theory (QMod)
We have recently elaborated 'Quantum Model Theory' (QMod) to model situations
where the quantum effects of contextuality, interference, superposition,
entanglement and emergence, appear without the entities giving rise to these
situations having necessarily to be of microscopic nature. We have shown that
QMod models without introducing linearity for the set of the states. In this
paper we prove that QMod, although not using linearity for the state space,
provides a method of identification for entangled states and an intuitive
explanation for their occurrence. We illustrate this method for entanglement
identification with concrete examples
Quantum Structure in Cognition: Why and How Concepts are Entangled
One of us has recently elaborated a theory for modelling concepts that uses
the state context property (SCoP) formalism, i.e. a generalization of the
quantum formalism. This formalism incorporates context into the mathematical
structure used to represent a concept, and thereby models how context
influences the typicality of a single exemplar and the applicability of a
single property of a concept, which provides a solution of the 'Pet-Fish
problem' and other difficulties occurring in concept theory. Then, a quantum
model has been worked out which reproduces the membership weights of several
exemplars of concepts and their combinations. We show in this paper that a
further relevant effect appears in a natural way whenever two or more concepts
combine, namely, 'entanglement'. The presence of entanglement is explicitly
revealed by considering a specific example with two concepts, constructing some
Bell's inequalities for this example, testing them in a real experiment with
test subjects, and finally proving that Bell's inequalities are violated in
this case. We show that the intrinsic and unavoidable character of entanglement
can be explained in terms of the weights of the exemplars of the combined
concept with respect to the weights of the exemplars of the component concepts.Comment: 10 page
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