Time change invariants for measure preserving flows

Previously, the design of sewer systems has been limited to studies of their hydraulic characteristics, in particular the ability of the system to convey the maximum discharge. Greater environmental awareness has necessitated that new designs, and some existing schemes, are assessed to determine the environmental load which the scheme will deliver to any downstream component. This paper describes a laboratory programme which has been designed to elucidate the effects of manholes on the longitudinal dispersion of solutes. A laboratory system is described, which allows in situ measurements to be taken of the concentration of a fluorescent solute tracer, both up- and down-stream of a surcharged manhole junction. Results are presented from a preliminary series of studies undertaken for a single manhole geometry over a range of discharges, with varying levels of surcharge. Results are presented showing the variation of travel time, change in second moment of the distribution and of a dispersion factor with surcharge, assuming a Taylor approach and determining the dispersion factor using a ‘change in moment’ method. The effect of the stored volume within the manhole is clearly evident. The limitations and the applicability of this approach are discussed.

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Embedding-based real-time change point detection with application to activity segmentation in smart home time series data

Expert Systems with Applications ◽

10.1016/j.eswa.2021.115641 ◽

2021 ◽

pp. 115641

Author(s):

Unai Bermejo ◽

Aitor Almeida ◽

Aritz Bilbao ◽

Gorka Azkune

Keyword(s):

Time Series ◽

Real Time ◽

Change Point ◽

Smart Home ◽

Time Series Data ◽

Time Change ◽

Change Point Detection ◽

Series Data ◽

Point Detection

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Evolution of Waves Induced by Time Change of Medium Permittivity in a Sphere

10.1063/1.3253890 ◽

2009 ◽

Cited By ~ 1

Author(s):

A. Nerukh ◽

T. Remayeva ◽

N. Sakhnenko ◽

Dmitry N. Chigrin

Keyword(s):

Time Change

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MERCY AMBA ODUYOYE VISITS OUR FACULTY (UNIVERSITY OF AMSTERDAM) 1

Exchange ◽

10.1163/157254392x00147 ◽

1992 ◽

Vol 21 (1) ◽

pp. 57-61

Author(s):

Jacqueline Williams

Keyword(s):

Time Change ◽

Global Perspective ◽

African Woman ◽

The Future ◽

Love Life ◽

The Times

AbstractStepping into other women's farms was like being born into a fresh and nurturing culture. From this global perspective all my mothers began to make sense to me. They all expressed a single theme: "Be a woman. Seek and work only for what is life sustaining. Don't just change with the times, let the time change because you are present. Make a difference. " It is their faith and hope, their courage and strength, their joy and their love that connect me with myself and move me to connect with all who love life and seek to make a difference. So I do my theology always asking: "What difference does it make?" and I do a lot of dreaming anticipating today the gospel of the future. The twins of what is and what is yet to be still struggle within me. Yet already the new African woman and theologian is on the threshold. The water of her coming is already gushing out; with her comes the water of life. So the gardens shall bloom. Only the flowers and the vegatables shall be allowed to live; weeds and blight shall be forbidden. 2

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Escaping the Trap: Losing the Northern Cities Shift in Real Time

Language Variation and Change ◽

10.1017/s0954394520000137 ◽

2020 ◽

Vol 32 (3) ◽

pp. 373-398

Author(s):

Anja Thiel ◽

Aaron J. Dinkin

Keyword(s):

New York ◽

Young People ◽

Older People ◽

Real Time ◽

Spontaneous Speech ◽

Time Change ◽

Negative Evaluation ◽

Small City ◽

Northern Cities Shift ◽

Northern Cities

AbstractWe examine the loss of the Northern Cities Shift raising of trap in Ogdensburg, a small city in rural northern New York. Although data from 2008 showed robust trap-raising among young people in Ogdensburg, in data collected in 2016 no speakers clear the 700-Hz threshold for NCS participation in F1 of trap—a seemingly very rapid real-time change. We find apparent-time change in style-shifting: although older people raise trap more in wordlist reading than in spontaneous speech, younger people do the opposite. We infer that increasing negative evaluation of the feature led Ogdensburg speakers to collectively abandon raising trap between 2008 and 2016. This indicates a role for communal change in the transition of a dialect feature from an indicator to a marker.

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Evaluation of the Effect of Time Change in Cognitive Function in Volunteers in Tehran

Global Journal of Health Science ◽

10.5539/gjhs.v9n2p119 ◽

2016 ◽

Vol 9 (2) ◽

pp. 119 ◽

Cited By ~ 5

Author(s):

Marjan Erfani ◽

Hedayat Sahraei ◽

Zahra Bahari ◽

Gholam Hossein Meftahi ◽

Boshra Hatef ◽

...

Keyword(s):

Mental Health ◽

Reaction Time ◽

Cognitive Functions ◽

Reduction Reaction ◽

Plasma Cortisol Level ◽

Mental Fatigue ◽

Time Change ◽

General Mental Health ◽

Before And After ◽

Time Changes

BACKGROUND: Time change (which can lead to sleep duration decrements) can lead to brain dysfunction if repeated. In the present study, cognitive functions of the volunteers were evaluated before and after the time changes in Tehran.METHODS: Eleven, voluntary healthy persons (21±2 year old) were evaluated for their cognitive functions including sustain attention, reaction time, and mental fatigue twenty-one days before the time changes and thirty-eight days after time change using PASAT software. In addition, plasma cortisol level was measured before and after the time changes.RESULTS: After the time changes salivary cortisol concentration increase, but general mental health was decreased. Sustain attention was shortened after time change which was significantly different compared with before the time changes. Reaction time was increased after the time changes in comparison with the before the time changes, but was not statistically significant. In addition, mental fatigue was increased after the time changes.CONCLUSION: It seems that time change may reduce brain cognitive functions which are manifested by general mental health, sustain attention reduction, reaction time as well as mental fatigue.

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