1,470 research outputs found

    The FDM demodulating characteristics of non-linear phase-locked loops

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    FDM demodulation characteristics of nonlinear phase locked loop

    APPLICATIONS OF ESTIMABLE FUNCTIONS IN AGRICULTURAL RESEARCH WITH SPECIAL EMPHASIS ON THE GLM PROCEDURE OF SAS.

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    An understanding of estimable functions is essential when using an overparameterized linear model. The most attractive features of these functions are their invariance property to the solution vector and their wide range of practical applications in agricultural research. This study reviews some of the ways that estimable functions can be used by the agricultural scientist

    Forage Crop Research: Evaluating Forage Species in Iowa for Productivity during Drought Conditions—Quality

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    The objective of this research is to evaluate the forage quality of forage species for their seasonal productivity differences and their ability to withstand droughty environmental conditions in Iowa

    Forage Crop Research: Evaluating Forage Species in Iowa for Productivity during Drought Conditions

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    Drought often results in greater agricultural damage in southern, western, and northeastern Iowa than in the rest of the state. Slight to severe slopes are prone to erosion, and soils high in clay content are slow to drain excess moisture during wet periods and have low amounts of available moisture during periods of drought. The land is predominantly used for livestock production because of factors that limit level of productivity in row-crop production

    Hearing Silence:Understanding the complexities of silence in democratic classrooms and our responsibilities as teachers and teacher educators. A response to "Creating a Democratic Mathematics Classroom: The Interplay of the Rights and Responsibilities of the Learner."

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    This response to Priya Prasad’s and Crystal Kalinec-Craig’s article on the interplay of the Rights and Responsibilities of the Learner aims to engage with and add on to the authors’ exploration of learners overexercising or opting out of their rights. While grappling with these challenges alongside the authors, our curiosity deepened about a significant and understudied facet of democratic classrooms: silence. Through this response, we consider the multifaceted dimension of silence and how a focus on silence may help us more fully understand the tension between learners’ rights and responsibilities to self, each other, and the collective. Specifically, we engage in dialogue around three questions: If students have the right to speak, listen, and be heard, do they also have a right to be silent, or is that right surpassed by a responsibility to contribute verbally, because classmates will not be able to learn from unexpressed thinking? If a student is silent, how do we distinguish if they are choosing to be silent or are being silenced? What might it look like to think about rights and responsibilities as collective rather than individual

    Heteroclinic and Homoclinic Connections Between the Sun-Earth Triangular Points and Quasi-Satellite Orbits for Solar Observations

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    Investigation of new orbit geometries exhibits a very attractive behavior for a spacecraft to monitor space weather coming from the Sun. Several orbit transfer mechanisms are analyzed as potential alternatives to monitor solar activity such as a sub-solar orbit or quasi-satellite orbit and short and long heteroclinic and homoclinic connections between the triangular points L4 and L5 and the collinear point L3 of the CRTBP (circular restricted three-body problem) in the Sun-Earth system. These trajectories could serve as channels through where material can be transported from L5 to L3 by performing small maneuvers at the departure of the Trojan orbit. The size of these maneuvers at L5 is between 299 m/s and 730 m/s depending on the transfer time of the trajectory and does not need any deterministic maneuvers at L3. Our results suggest that material may also be transported from the Trojan orbits to quasi-satellite orbits or even displaced quasi-satellite orbits
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