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159955 full-text articles. Page 6 of 4011.

Using Well-Known Probability Density Functions To Evaluate Certain Integrals In Calculus, Stacy Pitman, Andreas Lazari 2017 Georgia Academy of Science

Using Well-Known Probability Density Functions To Evaluate Certain Integrals In Calculus, Stacy Pitman, Andreas Lazari

Georgia Journal of Science

A major source of anxiety for engineering and science majors who must take calculus is the topic of integration. The techniques of integration necessary for solving practical problems in the sciences are lengthy and complex. In this paper, we are introducing a method that minimizes the algebra as well as the number of computations for certain types of integrals. It is important to note that we are not suggesting that the conventional methods for teaching techniques of integration be replaced with the innovation we are proposing. Rather, the new approach we suggest is to be presented only after the traditional ...


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Wideband Photometry Of Saturn In 2006-2007, Richard W. Schmude Jr. 2017 Gordon State College

Wideband Photometry Of Saturn In 2006-2007, Richard W. Schmude Jr.

Georgia Journal of Science

The writer carried out brightness measurements of Saturn and its rings with four different color filters. The selected normalized mag­nitudes of Saturn + rings for a ring tilt angle of 14° are B(1,0) = -8.25 ± 0.03, V(1,0) = -9.36 ± 0.03, R(1,0) = -10.01 ± 0.04 and 1(1,0) -10.16 ± 0.04. The opposition surge values for Saturn+ rings on Feb. 11, 2007 (solar phase angle = 0.15°) were 0.19 and 0.06 magnitudes for the Band V filters respectively. The writer concludes that the B-V and V-R color indexes ...


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Obat Aborsi Malang Hub 085803090211 Jual Obat Aborsi Kota Malang, acep shop 2017 Purdue University

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Optimal Dual Fusion Frames For Probabilistic Erasures, Patricia Mariela Morillas 2017 Universidad Nacional de San Luis and CONICET, Argentina

Optimal Dual Fusion Frames For Probabilistic Erasures, Patricia Mariela Morillas

Electronic Journal of Linear Algebra

For any fixed fusion frame, its optimal dual fusion frames for reconstruction is studied in case of erasures of subspaces. It is considered that a probability distribution of erasure of subspaces is given and that a blind reconstruction procedure is used, where the erased data are set to zero. It is proved that there are always optimal duals. Sufficient conditions for the canonical dual fusion frame being either the unique optimal dual, a non-unique optimal dual, or a non optimal dual, are obtained. The reconstruction error is analyzed, using the optimal duals in the probability model considered here and using ...


2014 – Historic Seawater Intrusion Map, Pressure 400-Foot Aquifer For The Years 1959-2013, 2017 California State University, Monterey Bay

2014 – Historic Seawater Intrusion Map, Pressure 400-Foot Aquifer For The Years 1959-2013

Groundwater Basin Maps

The Fig. ES-7 map included in the 2016 State of the Salinas River Groundwater Basin summarizes the rate of seawater intrusion into 400-foot aquifer located in the northern Salinas Valley, Monterey County, from 1959 through 2013. The rates were estimated by Monterey County Water Resources Agency.


Automated Bug Removal For Software-Defined Networks, Yang Wu, Andreas Haeberlen, Wenchao Zhou, Boon T. Loo, Ang Chen 2017 University of Pennsylvania

Automated Bug Removal For Software-Defined Networks, Yang Wu, Andreas Haeberlen, Wenchao Zhou, Boon T. Loo, Ang Chen

Technical Reports (CIS)

When debugging an SDN application, diagnosing the problem is merely the first step: the operator must still find a fix that solves the problem, without causing new problems elsewhere. However, most existing debuggers focus exclusively on diagnosis and offer the network operator little or no help with finding an effective fix. Finding a suitable fix is difficult because the number of candidates can be enormous. In this paper, we propose a step towards automated repair for SDN applications. Our approach consists of two elements. The first is a data structure that we call meta provenance, which can be used to ...


New Strategies For Investigating Oxidative Aliphatic Carbon-Carbon Bond Cleavage Reactions, Lisa Berreau 2017 Utah State University

New Strategies For Investigating Oxidative Aliphatic Carbon-Carbon Bond Cleavage Reactions, Lisa Berreau

Funded Research and Data

No abstract provided.


Chemical Tools For Delivery Of Carbon Monoxide, Lisa Berreau 2017 Utah State University

Chemical Tools For Delivery Of Carbon Monoxide, Lisa Berreau

Funded Research and Data

No abstract provided.


Siltcoos Lake Nonpoint Source Implementation Grant: Water Quality Conditions And Nutrient Sources, Mark D. Sytsma, Rich Miller 2017 Portland State University

Siltcoos Lake Nonpoint Source Implementation Grant: Water Quality Conditions And Nutrient Sources, Mark D. Sytsma, Rich Miller

Mark D. Sytsma

Siltcoos Lake is a large (1280 hectares), shallow (mean depth 3.3 m; maximum depth 6.7 m) lake located on the Central Oregon Coast, just south of Florence and bordered by Dunes City, Oregon. The outflow and water level of Siltcoos Lake is regulated by a dam on the Siltcoos River 4 km upstream from the Pacific. Several permanent streams feed the lake from its 176 square kilometer watershed including Fiddle Creek, Maple Creek, and Woahink Creek, the outflow from Woahink Lake. Much of the watershed is forested and used for timber harvest, residential development, and limited agricultural production ...


Evaluating Simplistic Methods To Understand Current Distributions And Forecast Distribution Changes Under Climate Change Scenarios: An Example With Coypu (Myocastor Coypus), Catherine S. Jarnevich, Nicholas E. Young, Trevor R. Sheffels, Jacoby Carter, Mark D. Sytsma, Colin Talbert 2017 U.S. Geological Survey

Evaluating Simplistic Methods To Understand Current Distributions And Forecast Distribution Changes Under Climate Change Scenarios: An Example With Coypu (Myocastor Coypus), Catherine S. Jarnevich, Nicholas E. Young, Trevor R. Sheffels, Jacoby Carter, Mark D. Sytsma, Colin Talbert

Mark D. Sytsma

Invasive species provide a unique opportunity to evaluate factors controlling biogeographic distributions; we can consider introduction success as an experiment testing suitability of environmental conditions. Predicting potential distributions of spreading species is not easy, and forecasting potential distributions with changing climate is even more difficult. Using the globally invasive coypu (Myocastor coypus [Molina, 1782]), we evaluate and compare the utility of a simplistic ecophysiological based model and a correlative model to predict current and future distribution. The ecophysiological model was based on winter temperature relationships with nutria survival. We developed correlative statistical models using the Software for Assisted Habitat Modeling ...


Final Report: Evaluation Of The Morphoedaphic Index And Sediment Diatoms For Inference Of Pre-European Settlement Total Phosphorus Concentration In Epa Region 10 Lakes, Rich Miller, Aaron Hook, Richard Petersen, Mark D. Sytsma 2017 Portland State University

Final Report: Evaluation Of The Morphoedaphic Index And Sediment Diatoms For Inference Of Pre-European Settlement Total Phosphorus Concentration In Epa Region 10 Lakes, Rich Miller, Aaron Hook, Richard Petersen, Mark D. Sytsma

Mark D. Sytsma

Water quality in many Northwest lakes has declined over the past century due, in part, to increased anthropogenic nutrient loading (Edmonson and Lehman, 1981). Under the Clean Water Act, resource managers such as the Washington Department of Ecology, Oregon Department of Environmental Quality, and tribes are responsible for restoring and protecting the integrity of these waters. Targets for restoration or criteria for impairment are not well defined, however, and may naturally vary by geology, hydrology, morphometry, and climate. One way to determine whether lakes are impaired and to identify restoration targets is to assess lake reference conditions (EPA 2000). Reference ...


Variation In Tussock Architecture Of The Invasive Cordgrass Spartina Densiflora Along The Pacific Coast Of North America, Jesus M. Castillo, Brenda J. Grewall, Andrea Pickart, Enrique Figueroa, Mark D. Sytsma 2017 Universidad de Sevilla

Variation In Tussock Architecture Of The Invasive Cordgrass Spartina Densiflora Along The Pacific Coast Of North America, Jesus M. Castillo, Brenda J. Grewall, Andrea Pickart, Enrique Figueroa, Mark D. Sytsma

Mark D. Sytsma

Some introduced species spread rapidly beyond their native range and into novel habitats mediated by a high degree of phenotypic plasticity and/or rapid evolutionary responses. In this context, clonality has been described as a significant factor contributing to invasiveness. We studied the abiotic environment and the responses of different tussock architecture traits of the invasive cordgrass Spartina densiflora Brongn. (Poaceae). A common garden experiment and field studies of S. densiflora in salt marshes across a wide latitudinal gradient from California (USA) to British Columbia (Canada) provided a model system for an integrated study of the potential mechanisms underlying the ...


Community Science And The Ecological Merits Of Backyard Habitat Patches And Adjacent Green-Spaces For Urban Avian Species, Kristen S. Gulick, Nikkie West, Marion Dresner 2017 Portland State University

Community Science And The Ecological Merits Of Backyard Habitat Patches And Adjacent Green-Spaces For Urban Avian Species, Kristen S. Gulick, Nikkie West, Marion Dresner

Marion Dresner

In what ways do small-scale urban backyards contribute to local bird abundance and biodiversity? In what ways might these yards serve as an ‘extension’ of neighboring native forest areas? This project investigates the contribution that a group of backyards, certified through the Backyard Habitat Certification Program, have in the suburb of Hillsdale, Oregon, which is adjacent to the natural area of Keller Woodland. Backyard owners functioning as citizen or community scientists assisted with conducting residential bird point-counts once a week in each backyard and the natural area. Counts were done for a total of 8 weeks during nesting season to ...


Long-Term Ecological Research In Forest Park: Tracking Urban Impacts To Forest Structure And Productivity, Andrew Addessi, Marion Dresner 2017 Portland State University

Long-Term Ecological Research In Forest Park: Tracking Urban Impacts To Forest Structure And Productivity, Andrew Addessi, Marion Dresner

Marion Dresner

Current and historic land use practices as well as exposure to an urban environment can impact forest structure and function. Past and ongoing research in Forest Park, a large urban forest in Portland, Oregon, suggests that mature Douglas-fir (Psuedotsuga meziesii) dominated conifer stands in the more urban end of the park are not developing certain late successional features. Notably, they lack a shade-tolerant conifer understory composed of western hemlock (Tsuga heterophylla) and western red-cedar (Thuja plicata). Here, I present three lines of investigation taken from several 1-hectare permanent long-term ecological research (LTER) plots in Forest Park. First, I investigated whether ...


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INI FOTO OBAT ASLI USIA 1 – 6 BULAN
KAMI MEMBERIKAN GARANSI 100%
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