scholarly journals Extraction of 10–30-Day Stable Components from a Boreal Atmosphere during ENSO Phases

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Kuo Wang ◽  
Guolin Feng ◽  
Yuxing Zeng ◽  
Zhengquan Li

Distinguishing the predictable 10–30-day stable components (STs) in the actual atmosphere has been important in atmospheric science research. In this study, a new method for extracting 10–30-day STs was developed with the use of historical observations. We extracted and analyzed 10–30-day STs via statistical extrapolation tests. The results show that the STs are maintained uniformly at the intraseasonal time scale; the overall trends in the atmospheric motion are revealed. Comparisons between pentad-by-pentad changes in the explained variances of the 10–30-day STs under ENSO phases show that the explained variance transmission attenuation trends for El Niño and La Niña years are weaker and more continuous than those of neutral years. Data for 10–30-day STs can remain continuous and stable from one month to the next. The proposed method and results present a new means of extracting predictable STs from the atmosphere using historical data.

2019 ◽  
Vol 122 (1) ◽  
pp. 681-699 ◽  
Author(s):  
E. Tattershall ◽  
G. Nenadic ◽  
R. D. Stevens

AbstractResearch topics rise and fall in popularity over time, some more swiftly than others. The fastest rising topics are typically called bursts; for example “deep learning”, “internet of things” and “big data”. Being able to automatically detect and track bursty terms in the literature could give insight into how scientific thought evolves over time. In this paper, we take a trend detection algorithm from stock market analysis and apply it to over 30 years of computer science research abstracts, treating the prevalence of each term in the dataset like the price of a stock. Unlike previous work in this domain, we use the free text of abstracts and titles, resulting in a finer-grained analysis. We report a list of bursty terms, and then use historical data to build a classifier to predict whether they will rise or fall in popularity in the future, obtaining accuracy in the region of 80%. The proposed methodology can be applied to any time-ordered collection of text to yield past and present bursty terms and predict their probable fate.


2002 ◽  
Vol 211 (1) ◽  
pp. 157-164
Author(s):  
Y SAKAMOTO ◽  
K KIZAKI ◽  
T MOTOHIRO ◽  
Y YOKOTA ◽  
H SOBUKAWA ◽  
...  

2011 ◽  
Vol 55-57 ◽  
pp. 1091-1096
Author(s):  
Xiao Gang Wang ◽  
Xin Zhan Li ◽  
Yue Li

Based on the research about outside shape of woman warm jacket more than twenty years, fashion variables that were representative and can describe the fashionable shape were discussed. Experiment was designed to achieve data of large numbers of female body. Body size variables were statistically analyzed to decide the module that was the basement for achieving data from historical photos. Fashionable characteristic diagrams of garment length, front chest width, shoulder length, collar height and their error bar charts were drawn for discussing the change of fashionable shape. The fashion trends in the future were also prognosticated scientifically. At the same time, a historical database was developed for manufacture and designing, which it is the basement for automatic pattern designing. This new method for fashion trend research was introduced by data mining technology, which it opens our minds for garment science research and offers a new database for improving garment CAD system.


A prime objective of atmospheric science research in Antarctica is to use the special conditions found there to throw new light on global problems and, in particular, to test theories of the dynamics of the environment and its reactions to solar phenomena. This involves much international collaboration in planning, data collection and analysis, which is briefly described. The British Antarctic Survey theatre of operations is geographically and magnetically unique and therefore offers exceptionally favourable conditions for such tests. The development of new instruments, in particular those carried by satellite, has made research possible in uninhabited regions and enabled problems to be studied which were previously impracticable. The objects of this paper are to draw attention to the needs and possibilities, and to show some of the ways in which the specific investigations discussed by other contributors interact.


2011 ◽  
Vol 88-89 ◽  
pp. 175-179
Author(s):  
Xiao Gang Wang ◽  
Qin Zheng ◽  
Xin Zhan Li

In this article we discuss a new method for describing the 3D shape of woman warm jacket and set up its mathematic model, which is by dint of body scanning technology. Telmat scanning system scanned samples. The scanning point cloud were analyzed in horizontal and vertical sections. Outlines of vertical sections were described and mathematic models were set up. The result helped to prognosticate the shape of woman warm jacket. A new describing method for 3D shape is discussed. And it opens our mind to utilize body-scanning technology for deeper science research.


2021 ◽  
Vol 28 (4) ◽  
pp. 14-24
Author(s):  
Omar M. A. Mahmood Agha

This paper deals with the study of drought in the Nineveh region usingthe Chinese Z index (CZI) for a time scale (1 month). Historical data wereused from 1981 to 2018 for Mosul, Sinjar, and Tal Afar stations. Thereturn period and probability event for the moderate drought werecalculated for each month separately. The results indicated that allstations experienced the highest drought intensity in March comparedwith the other months. The average probability of moderate droughtranged between 0-0.31 for all months, and the maximum severity of thedrought was found in December from 2004 to 2008 for all stations. Inaddition, the results showed that the region's climate during the studyperiod was within the mild drought and humidity (closest to normal).This paper is the first study using the Chinese Z-index (CZI) in the studyarea and the Iraq region


2015 ◽  
Vol 23 (1) ◽  
Author(s):  
F. Corral ◽  
M. Strojnik ◽  
G. Paez

AbstractWe describe a new method to separate ballistic from the scattered photons for optical tissue characterization. It is based on the hypothesis that the scattered photons acquire a phase delay. The photons passing through the sample without scattering or absorption preserve their coherence so they may participate in interference. We implement a Mach−Zehnder experimental setup where the ballistic photons pass through the sample with the delay caused uniquely by the sample indices of refraction. We incorporate a movable mirror on the piezoelectric actuator in the sample arm to detect the amplitude of the modulation term. We present the theory that predicts the path−integrated (or total) concentration of the scattering and absorption centres. The proposed technique may characterize samples with transmission attenuation of ballistic photons by a factor of 10


1996 ◽  
Vol 8 (3) ◽  
pp. 169-183 ◽  
Author(s):  
Nina V Piotukh

The application of the Geographic Information System in historical research helps to visualize historical data, to postulate hypothesis and gives a new method of a more complex investigation. GIS is used in this study to present historical data on maps, to clarify some source studying questions and to analyze settlement and farming location on the territory of Novorgev district.


2019 ◽  
Vol 62 (12) ◽  
pp. 1946-1991 ◽  
Author(s):  
Zhiyong Meng ◽  
Fuqing Zhang ◽  
Dehai Luo ◽  
Zhemin Tan ◽  
Juan Fang ◽  
...  

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