نتایج جستجو برای: statistical dispersion

تعداد نتایج: 431084  

1997
David A. Randall

Measurements in atmospheric science sometimes determine universal functions, but more commonly data are collected in the form of case studies. Models are conceptual constructs that can be used to make predictions about the outcomes of measurements. Hypotheses can be expressed in terms of model results, and the best use of measurements is to falsify such hypotheses. Tuning of models should be av...

پایان نامه :0 1374

the following question poped up: is there any relationship between iranian high school efl learners reading comprehension and listening comprehension? then the following null hypothesis (ho) was developed to the test the above, mentioned question. "there is no relationship between high school efl learners reading comprehension and listening comprehension. for nearly 16 weeks, the experimental g...

Journal: :آب و خاک 0
محمدرضا شایسته فر نجمه شفیعی حسین شیرانی علی رضایی محمدرضا کارگر دیانتی

in recent years, the study of soil contamination problems surrounding the mines and smelting plants has attracted the serious attention of the environmental experts. in iran, due to the mining and mine development, the study of environmental problems seems to be obligatory. the main point of this research is the implications of the statistical and geostatistical studies to evaluate and prepare ...

2015
E. Solazzo

The multimodel ensemble exercise performed within the HTAP project context (Fiore et al., 2009) is used here as an example of how a pre-inspection, diagnosis and selection of an ensemble, can produce more reliable results. The procedure is contrasted with the often-used practice of simply averaging model simulations, assuming different models produce independent results, and using the diversity...

Journal: :Symmetry 2021

Some recent studies exposed preliminary but rather intriguing statistical evidence of in vacuo dispersion-like spectral lags for gamma-ray bursts (GRBs), a linear correlation between time observation and energy GRB particles, which is expected some models quantum geometry. Those results focused on testing dispersion the most energetic particular only included photons with at emission greater th...

2008
ADEL A. ABDEL-RAHMAN

As an air pollutant is transported from a source to a potential receptor the pollutant disperses into the surrounding air so that it arrives at a much lower concentration than it was on leaving the source. Strict environmental regulations worldwide resulted in an ever growing concern about the validity and reliability of air quality dispersion models. The present work is a try to evaluate the a...

1996
Gregory R. Carmichael Adrian Sandu Florian Potra Valeriu Damian Mirela Damian

In this paper the present "state\ of air quality modeling (as viewed by the authors) is presented. The focus of the paper will be on the "current\ state-of-aaairs. Due to limitation of space (and the focus of this Dagstuhl Seminar) the discussion will focus on only a few aspects of air quality modeling: i.e., chemical integration, sensitivity analisys and computational framework.

1999
Hua Wang Ming Chen

While there are extensive theoretical studies on firms’ responses to environmental regulations and enforcement, there are few empirical analyses of firms’ expenditures on pollution abatement in responding to different regulations and enforcement strategies. This paper presents an empirical analysis of pollution abatement efforts of Chinese industrial firms under a combination of pollution charg...

2001
Maurizio Lusignoli

A discussion of several exotic models and how well they are able to describe the data, with particular emphasis on atmospheric neutrinos.

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