17,031 research outputs found
Orbit determination and control for the European Student Moon Orbiter
No full textThis paper presents the preliminary navigation and orbit determination analyses for the European Student Moon Orbiter. The severe constraint on the total mission Delta nu and the all-day piggy-back launch requirement imposed by the limited available budget, led to the choice of using a low-energy transfer, more specifically a Weak Stability Boundary one, with a capture into an elliptic orbit around the Moon. A particular navigation strategy was devised to ensure capture and fulfil the requirement for the uncontrolled orbit stability at the Moon. This paper presents a simulation of the orbit determination process, based on an extended Kalman filter, and the navigation strategy applied to the baseline transfer of the 2011-2012 window. The navigation strategy optimally allocates multiple Trajectory Correction Manoeuvres to target a so-called capture corridor. The capture corridor is defined, at each point along the transfer, by back-propagating the set of perturbed states at the Moon that provides an acceptable lifetime of the lunar orbit. (C) 2012 Elsevier Ltd. All rights reserved
A comparison and classification of oscillatory characteristics in speech perception and covert speech
No full textCovert speech, the mental imagery of speaking, has been studied increasingly to understand and decode thoughts in the context of brain-computer interfaces. In studies of speech comprehension, neural oscillations are thought to play a key role in the temporal encoding of speech. However, little is known about the role of oscillations in covert speech. In this study, we investigated the oscillatory involvements in covert speech and speech perception. Data were collected from 10 participants with 64 channel EEG. Participants heard the words, ‘blue’ and ‘orange’, and subsequently mentally rehearsed them. First, continuous wavelet transform was performed on epoched signals and subsequently two-tailed t-tests between two classes (tasks) were conducted to determine statistical differences in frequency and time (t-CWT). In the current experiment, a task comprised speech perception or covert rehearsal of a word while a condition was the discrimination between tasks. Features were extracted using t-CWT and subsequently classified using a support vector machine. θ and γ phase amplitude coupling (PAC) was also assessed within tasks and across conditions between perception and covert activities (i.e. cross-task). All binary classifications accuracies (80–90%) significantly exceeded chance level, supporting the use of t-CWT in determining relative oscillatory involvements. While the perception condition dynamically invoked all frequencies with more prominent θ and α activity, the covert condition favoured higher frequencies with significantly higher γ activity than perception. Moreover, the perception condition produced significant θ-γ PAC, possibly corroborating a reported linkage between syllabic and phonemic sampling. Although this coupling was found to be suppressed in the covert condition, we found significant cross-task coupling between perception θ and covert speech γ. Covert speech processing appears to be largely associated with higher frequencies of EEG. Importantly, the significant cross-task coupling between speech perception and covert speech, in the absence of within-task covert speech PAC, seems to support the notion that the γ- and θ-bands reflect, respectively, shared and unique encoding processes across tasks
Moon Phases, Mood and Stock Market Returns: International Evidence
No full textWe employ recent data from 59 international emerging and mature stock markets to provide new evidence of a lunar cycle (full and new moon) effect on their stock market returns. Using a TGARCH model, we further examine the linkages between efficient-market theory, calendar-related effects and investors' mood resulted from moon phases. The empirical results show significant full moon effects in 6 markets, and significant new moon effects in 8 markets. In line with the theory, we report significant positive effect of new moon on stock market returns in 5 cases (UK, Switzerland, Bangladesh, Chile and Cyprus), while a negative effect of full moon is reported for the case of Jordan only. In addition, we find that lunar effects are strongly influenced by the calendar anomalies (Monday effect and January effect); several markets -mostly emerging markets- show evidence of full/new moon effects as well as Monday/January effects (Bangladesh, Brazil, Chile, Tunisia, Belgium, Cyprus). Further, we prove that the lunar phases are stronger outside America. These findings are recommended to investors, financial managers and analysts dealing with international stock indices
Moon's hardy trees & plants for every place & purpose / the William H. Moon Co.
No full textAnnual Established 1872 by William H. Moon, incorporated in 1890. Purchased the Samuel C. Moon nursery in 1911. Located in Chesapeake City, Maryland, since 1989 under the leadership of John Pursell. The legacy of the nursery goes back to 1767, when James Moon sold apple and pear trees in what would become Bucks County, Pennsylvania. Moon's son Moses and grandson James continued selling fruit trees. By the mid-1800's, great grandson Mahlon Moon was growing trees full-time on 40 acres that he called Morrisville Nursery. In 1872 his sons William and James founded the William H. Moon Company. William was president of the Pennsylvania Horticultural Society, founder and first president of the National Nurserymen's Association, and an organizer of the Ornamental Growers' Association. William's sons Henry T. and J. Edward continued in the business. A Japanese beetle infestation, the death of J. Edward Moon and the stock market crash in the 1920's brought hard times, and the nursery went bankrupt in 1936. Most of the land went to real estate development, and Hiram Rickert purchased the rest and continued to operate a nursery as a "successor to Moon's." In the 1960's, Richard H. Washburn bought the land from Hiram Rickert for development, and Walter C. Flowers bought the Moon and Rickert names for a new business, and in 1971 revived the nursery. More company history available on the website at http://www.moonnurseries.com/history/index.html Description based on: 1908; title from cover
Moon's hardy trees & plants for every place & purpose / the William H. Moon Co.
No full textAnnual Established 1872 by William H. Moon, incorporated in 1890. Purchased the Samuel C. Moon nursery in 1911. Located in Chesapeake City, Maryland, since 1989 under the leadership of John Pursell. The legacy of the nursery goes back to 1767, when James Moon sold apple and pear trees in what would become Bucks County, Pennsylvania. Moon's son Moses and grandson James continued selling fruit trees. By the mid-1800's, great grandson Mahlon Moon was growing trees full-time on 40 acres that he called Morrisville Nursery. In 1872 his sons William and James founded the William H. Moon Company. William was president of the Pennsylvania Horticultural Society, founder and first president of the National Nurserymen's Association, and an organizer of the Ornamental Growers' Association. William's sons Henry T. and J. Edward continued in the business. A Japanese beetle infestation, the death of J. Edward Moon and the stock market crash in the 1920's brought hard times, and the nursery went bankrupt in 1936. Most of the land went to real estate development, and Hiram Rickert purchased the rest and continued to operate a nursery as a "successor to Moon's." In the 1960's, Richard H. Washburn bought the land from Hiram Rickert for development, and Walter C. Flowers bought the Moon and Rickert names for a new business, and in 1971 revived the nursery. More company history available on the website at http://www.moonnurseries.com/history/index.html Description based on: 1908; title from cover
Moon's hardy trees & plants for every place & purpose / the William H. Moon Co.
No full textAnnual Established 1872 by William H. Moon, incorporated in 1890. Purchased the Samuel C. Moon nursery in 1911. Located in Chesapeake City, Maryland, since 1989 under the leadership of John Pursell. The legacy of the nursery goes back to 1767, when James Moon sold apple and pear trees in what would become Bucks County, Pennsylvania. Moon's son Moses and grandson James continued selling fruit trees. By the mid-1800's, great grandson Mahlon Moon was growing trees full-time on 40 acres that he called Morrisville Nursery. In 1872 his sons William and James founded the William H. Moon Company. William was president of the Pennsylvania Horticultural Society, founder and first president of the National Nurserymen's Association, and an organizer of the Ornamental Growers' Association. William's sons Henry T. and J. Edward continued in the business. A Japanese beetle infestation, the death of J. Edward Moon and the stock market crash in the 1920's brought hard times, and the nursery went bankrupt in 1936. Most of the land went to real estate development, and Hiram Rickert purchased the rest and continued to operate a nursery as a "successor to Moon's." In the 1960's, Richard H. Washburn bought the land from Hiram Rickert for development, and Walter C. Flowers bought the Moon and Rickert names for a new business, and in 1971 revived the nursery. More company history available on the website at http://www.moonnurseries.com/history/index.html Description based on: 1908; title from cover
Moon's hardy trees & plants for every place & purpose / the William H. Moon Co.
No full textAnnual Established 1872 by William H. Moon, incorporated in 1890. Purchased the Samuel C. Moon nursery in 1911. Located in Chesapeake City, Maryland, since 1989 under the leadership of John Pursell. The legacy of the nursery goes back to 1767, when James Moon sold apple and pear trees in what would become Bucks County, Pennsylvania. Moon's son Moses and grandson James continued selling fruit trees. By the mid-1800's, great grandson Mahlon Moon was growing trees full-time on 40 acres that he called Morrisville Nursery. In 1872 his sons William and James founded the William H. Moon Company. William was president of the Pennsylvania Horticultural Society, founder and first president of the National Nurserymen's Association, and an organizer of the Ornamental Growers' Association. William's sons Henry T. and J. Edward continued in the business. A Japanese beetle infestation, the death of J. Edward Moon and the stock market crash in the 1920's brought hard times, and the nursery went bankrupt in 1936. Most of the land went to real estate development, and Hiram Rickert purchased the rest and continued to operate a nursery as a "successor to Moon's." In the 1960's, Richard H. Washburn bought the land from Hiram Rickert for development, and Walter C. Flowers bought the Moon and Rickert names for a new business, and in 1971 revived the nursery. More company history available on the website at http://www.moonnurseries.com/history/index.html Description based on: 1908; title from cover
Moon's hardy trees & plants for every place & purpose / the William H. Moon Co.
No full textAnnual Established 1872 by William H. Moon, incorporated in 1890. Purchased the Samuel C. Moon nursery in 1911. Located in Chesapeake City, Maryland, since 1989 under the leadership of John Pursell. The legacy of the nursery goes back to 1767, when James Moon sold apple and pear trees in what would become Bucks County, Pennsylvania. Moon's son Moses and grandson James continued selling fruit trees. By the mid-1800's, great grandson Mahlon Moon was growing trees full-time on 40 acres that he called Morrisville Nursery. In 1872 his sons William and James founded the William H. Moon Company. William was president of the Pennsylvania Horticultural Society, founder and first president of the National Nurserymen's Association, and an organizer of the Ornamental Growers' Association. William's sons Henry T. and J. Edward continued in the business. A Japanese beetle infestation, the death of J. Edward Moon and the stock market crash in the 1920's brought hard times, and the nursery went bankrupt in 1936. Most of the land went to real estate development, and Hiram Rickert purchased the rest and continued to operate a nursery as a "successor to Moon's." In the 1960's, Richard H. Washburn bought the land from Hiram Rickert for development, and Walter C. Flowers bought the Moon and Rickert names for a new business, and in 1971 revived the nursery. More company history available on the website at http://www.moonnurseries.com/history/index.html Description based on: 1908; title from cover
Moon's hardy trees & plants for every place & purpose / the William H. Moon Co.
No full textAnnual Established 1872 by William H. Moon, incorporated in 1890. Purchased the Samuel C. Moon nursery in 1911. Located in Chesapeake City, Maryland, since 1989 under the leadership of John Pursell. The legacy of the nursery goes back to 1767, when James Moon sold apple and pear trees in what would become Bucks County, Pennsylvania. Moon's son Moses and grandson James continued selling fruit trees. By the mid-1800's, great grandson Mahlon Moon was growing trees full-time on 40 acres that he called Morrisville Nursery. In 1872 his sons William and James founded the William H. Moon Company. William was president of the Pennsylvania Horticultural Society, founder and first president of the National Nurserymen's Association, and an organizer of the Ornamental Growers' Association. William's sons Henry T. and J. Edward continued in the business. A Japanese beetle infestation, the death of J. Edward Moon and the stock market crash in the 1920's brought hard times, and the nursery went bankrupt in 1936. Most of the land went to real estate development, and Hiram Rickert purchased the rest and continued to operate a nursery as a "successor to Moon's." In the 1960's, Richard H. Washburn bought the land from Hiram Rickert for development, and Walter C. Flowers bought the Moon and Rickert names for a new business, and in 1971 revived the nursery. More company history available on the website at http://www.moonnurseries.com/history/index.html Description based on: 1908; title from cover
Moon's hardy trees & plants for every place & purpose / the William H. Moon Co.
No full textAnnual Established 1872 by William H. Moon, incorporated in 1890. Purchased the Samuel C. Moon nursery in 1911. Located in Chesapeake City, Maryland, since 1989 under the leadership of John Pursell. The legacy of the nursery goes back to 1767, when James Moon sold apple and pear trees in what would become Bucks County, Pennsylvania. Moon's son Moses and grandson James continued selling fruit trees. By the mid-1800's, great grandson Mahlon Moon was growing trees full-time on 40 acres that he called Morrisville Nursery. In 1872 his sons William and James founded the William H. Moon Company. William was president of the Pennsylvania Horticultural Society, founder and first president of the National Nurserymen's Association, and an organizer of the Ornamental Growers' Association. William's sons Henry T. and J. Edward continued in the business. A Japanese beetle infestation, the death of J. Edward Moon and the stock market crash in the 1920's brought hard times, and the nursery went bankrupt in 1936. Most of the land went to real estate development, and Hiram Rickert purchased the rest and continued to operate a nursery as a "successor to Moon's." In the 1960's, Richard H. Washburn bought the land from Hiram Rickert for development, and Walter C. Flowers bought the Moon and Rickert names for a new business, and in 1971 revived the nursery. More company history available on the website at http://www.moonnurseries.com/history/index.html Description based on: 1908; title from cover
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