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210,733 full-text articles. Page 5401 of 5401.

A Sketch-Based Language For Representing Uncertainty In The Locations Of Origin Of Herbarium Specimens, Barry J. Kronenfeld, Andrew Weeks 2009 Eastern Illinois University

A Sketch-Based Language For Representing Uncertainty In The Locations Of Origin Of Herbarium Specimens, Barry J. Kronenfeld, Andrew Weeks

Barry J. Kronenfeld

Uncertainty fields have been suggested as an appropriate model for retrospective georeferencing of herbarium specimens. Previous work has focused only on automated data capture methods, but techniques for manual data specification may be able to harness human spatial cognition skills to quickly interpret complex spatial propositions. This paper develops a formal modeling language by which location uncertainty fields can be derived from manually sketched features. The language consists of low-level specification of critical probability isolines from which a surface can be uniquely derived, and high-level specification of features and predicates from which low-level isolines can be derived. In a case ...


The Effects Of The 1996 U.S.-Canada Softwood Lumber Agreement On The Industrial Users Of Lumber: An Event Study, Nisha Malhotra, Sumeet Gulati 2009 University of British Columbia

The Effects Of The 1996 U.S.-Canada Softwood Lumber Agreement On The Industrial Users Of Lumber: An Event Study, Nisha Malhotra, Sumeet Gulati

Nisha Malhotra

In this article, we analyze whether the Softwood Lumber Agreement between the United States and Canada imposed significant economic costs on industries that use softwood lumber in the United States. To ascertain this impact, we use an event study. Our event study analyzes variations in the stock prices of lumber-using firms listed at the major stock markets in the United States. We find that the news of events leading to the Softwood Lumber Agreement had significant negative impacts on the stock prices of industries using softwood lumber. The average reduction of stock prices for our sample of firms was approximately ...


Polyphyly Of The Pikeminnows (Teleostei: Cyprinidae) Inferred Using Mitochondrial Dna Sequences, T. Heath Ogden 2009 Utah Valley University

Polyphyly Of The Pikeminnows (Teleostei: Cyprinidae) Inferred Using Mitochondrial Dna Sequences, T. Heath Ogden

T. Heath Ogden

The phylogenetic relationships of the Colorado pikeminnow Ptychocheilus lucius, northern pikeminnow P. oregonensis, Sacramento pikeminnow P. grandis, Umpqua pikeminnow P. umpquae, and hardhead Mylopharodon conocephalus were examined by using molecular data to investigate monophyly of the genus Ptychocheilus. Phylogenies generated using DNA sequence data from the cytochrome b and 16S ribosomal DNA genes of the mitochondrial genome reveal that Ptychocheilus is a polyphyletic genus and suggest that the taxonomy of the group is in need of further revision. These data yield insights into the evolution of the pikeminnows and help place the significant evolutionary events in context with the geological ...


“El Derecho De La Ue Relativo A Los Organismos Modificados Genéticamente: La Comisión Europea Cambia De Estrategia Para Permitir, Restringir O Prohibir Su Cultivo”, Luis González Vaqué 2009 Asociación Iberoamericana para el Dereho Alimentario

“El Derecho De La Ue Relativo A Los Organismos Modificados Genéticamente: La Comisión Europea Cambia De Estrategia Para Permitir, Restringir O Prohibir Su Cultivo”, Luis González Vaqué

Luis González Vaqué

No abstract provided.


Binge Eating Disorder: What Physical Activity Professionals Need To Know, K. Jason Crandall 2009 Western Kentucky University

Binge Eating Disorder: What Physical Activity Professionals Need To Know, K. Jason Crandall

K. Jason Crandall

Physical activity professionals are
faced with a difficult task- to increase
the levels of physically active people
in the United States and around the
world. Recent data have shown that we
are not accomplishing this task with
any great success (Ogden, Carroll,
Curtin, McDowell, Tabak, & Flegal,
2006). Many factors, including physical
activity have been linked to the
increasing rates of obesity, yet there is
one contributing factor that many professionals
may be unaware of- binge
eating disorder or BED. Binge eating
disorder is an eating disorder characterized
by consistent binge eating (episodes
of uncontrolled eating involving
large amounts of food ...


Mining And Civilization, An Illustrated History, Fathi Habashi 2009 Laval University, Quebec City, Canada

Mining And Civilization, An Illustrated History, Fathi Habashi

Fathi Habashi

Mining and Civilization has been conceived to compliment the author's two books History of Metallurgy and Readings in Historical Metallurgy and to fill a gap in the literature. It is difficult to study the history of metallurgy without studying the history of mining at the same time. Each time the author visits ancient ruins or examines an ancient stone statue he recalls the work of miners who brought the material from a quarry so that the sculptor can create a work of art. History of mining, quarrying, and stone carving is history of civilization.


Surveys Of Stylisma Pickeringii Var. Pattersonii (Convolvulaceae), Its Associated Plant Species, And Its Insect Visitors, Ann E. Claerbout, Brent L. Todd, Janice M. Coons, Henry R. Owen, Donald W. Webb, John E. Ebinger, William E. McClain 2009 University of Illinois at Urbana-Champaign

Surveys Of Stylisma Pickeringii Var. Pattersonii (Convolvulaceae), Its Associated Plant Species, And Its Insect Visitors, Ann E. Claerbout, Brent L. Todd, Janice M. Coons, Henry R. Owen, Donald W. Webb, John E. Ebinger, William E. Mcclain

Henry R. Owen

Stylisma pickeringii var. pattersonii (Convolvulaceae) is endangered in Illinois and Iowa, and occurs in scattered populations in other states. During 1999 and 2000, two insect species previously unreported from Illinois were observed visiting its flowers. This study was undertaken to survey additional insect visitors, as well as to characterize the plant community where S. pickeringii occurs. The objectives were to survey: 1) floral traits (anthesis and flower density) of S. pickeringii, 2) associated plant species, and 3) insect visitor characteristics. Floral traits were determined and associated plant species surveyed in Mason County (degraded hay field on private property) and Henderson ...


A Simplified Method For Monitoring Progestagens In African Elephants Under Field Conditions, Bruce A. Schulte, Elizabeth W. Freeman, F. Nicole Abbondanza, Jordana M. Meyer, Janine L. Brown 2009 Western Kentucky University

A Simplified Method For Monitoring Progestagens In African Elephants Under Field Conditions, Bruce A. Schulte, Elizabeth W. Freeman, F. Nicole Abbondanza, Jordana M. Meyer, Janine L. Brown

Bruce A. Schulte

Summary
1. Hormone analyses are frequently used to support management of wildlife; however, current techniques are not very field-friendly. In situ hormone monitoring is often expensive, time consuming and logistically difficult. Thus, a new method for assessing ovarian cycle activity non-invasively in free-ranging African elephants was developed. 2. The technique involves handshaking faecal samples in common organic solvents, use of environmentally stable antibody-coated microtitre plates and assessment of progestagen concentrations based on a visual colour change.
3. Studies using ex situ African elephants determined that handshaking faeces in a solution of isopropyl alcohol was effective for extracting the faecal progestagens ...


Vertical Dispersal Of Aedes (Stegomyia) Spp. In High-Rise Apartments In Putrajaya, Malaysia, Mohd Sofian Bin Azirun 2009 Institute of Biological Sciences, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA

Vertical Dispersal Of Aedes (Stegomyia) Spp. In High-Rise Apartments In Putrajaya, Malaysia, Mohd Sofian Bin Azirun

Mohd Sofian Bin Azirun

A preliminary study on the vertical dispersal of Aedes populations in high-rise apartments was carried out in Presint 9, Putrajaya, Malaysia. Ovitraps were placed indoors within four blocks of high-rise apartments from the ground floors (0.0 - 3.0 m) until up to the tenth floors (28.1 - 30.0 m). Aedes aegypti was the dominant species found in the ovitraps (87.85%), while Aedes albopictus was found in lower numbers. From total number of larvae collected (650), 40.92% of these larvae were obtained from the fourth block; Block D. The peak density of Aedes sp. was observed at ...


Review Of The Timber Press Dictionary Of Plant Names, Henry R. Owen 2009 Eastern Illinois University

Review Of The Timber Press Dictionary Of Plant Names, Henry R. Owen

Henry R. Owen

No abstract provided.


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