نتایج جستجو برای: trend detection

تعداد نتایج: 682864  

1997
J. Mahantra H.K. Chaturvedi R.K. Phukan

A survey on opium use was earned out in Tinsukia district of upper Assam to assess the present prevalence and pattern of opium abuse and compared with earlier findings of the year 1981 (Baruah et al., 1995). A total of 75 addicts could be detected during the survey and 61 were interviewed using structured questionnaire. The results indicate significant decline in prevalence in opium use over th...

2016
John Holmes Jamie Brown Petra Meier Emma Beard Susan Michie Penny Buykx

OBJECTIVES To evaluate short-term effects of publishing revised lower risk national drinking guidelines on related awareness and knowledge. To examine where drinkers heard about guidelines over the same period. DESIGN Trend analysis of the Alcohol Toolkit Study, a monthly repeat cross-sectional national survey. SETTING England, November 2015 to May 2016. PARTICIPANTS A total of 11 845 adu...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده برق و کامپیوتر 1392

هدف از انجام این پروژه آشکارسازی trend باند آلفا سیگنال الکتروانسفالوگرام با استفاده از پردازش تصویر اسپکتروگرام آن است. به عبارت دیگر تغییرات ایجاد شده در طیف باند آلفا که در طول زمان و به دلیل یک پدیده¬ی فیزیولوژیکی یا شناختی رخ می¬دهد را بتوان با استفاده از پردازش اسپکتروگرام آشکار کرد. در این پروژه خستگی ذهنی به عنوان یک پدیده¬ی شناختی برای ایجاد تغییرات در باند آلفا مورد مطالعه قرار گرفت. ...

2006
Andreas Hotho Robert Jäschke Christoph Schmitz Gerd Stumme

As the number of resources on the web exceeds by far the number of documents one can track, it becomes increasingly difficult to remain up to date on ones own areas of interest. The problem becomes more severe with the increasing fraction of multimedia data, from which it is difficult to extract some conceptual description of their contents. One way to overcome this problem are social bookmark ...

Journal: :International Journal of Web Based Communities 2013

Journal: :IJWBC 2013
James Benhardus Jugal K. Kalita

As social media continues to grow, the zeitgeist of society is increasingly found not in the headlines of traditional media institutions, but in the activity of ordinary individuals. The identification of trending topics utilizes social media (such as Twitter) to provide an overview of the topics and issues that are currently popular within the online community. In this paper, we outline method...

Journal: :KI 2007
Bettina Hoser Jan Schröder Andreas Geyer-Schulz Maximilian Viermetz Michal Skubacz

In this paper we report on a project for Corporate Technology of Siemens AG, Munich, which aimed at the use of a social network analysis approach for trend and trend shift detection over time in a technically oriented newsgroup on mobile phones. The analysis was based on the assumption that a trend shift is relevant only if relevant (central) members of the newsgroup initiated this shift. A shi...

Edge detection and edge enhancement techniques play an essential role in interpreting potential field data. This paper describes the application of various edge detection techniques to gravity data in order to delineate the edges of subsurface structures. The edge detection methods comprise analytic signal, total horizontal derivative (THDR), theta angle, tilt angle, hyperbolic of tilt angle (H...

Journal: :Frontiers in Marine Science 2022

It is known that densely populated coastal areas may be adversely affected as a result of the climate change effects. In this respect, for protection, utilization, and management it critical to understand changes in wind speed (WS) significant wave height (SWH) areas. Innovative approaches, which are one trend analysis methods used an effective way examine these changes, have started very frequ...

2000
Mary DeSouza Arthur C. Smith Peter Szolovits

An automated medical trend detection program, TrenDx, was developed in earlier work by Haimowitz [1] and Le [2]. It was evaluated on its ability to discern growth abnormalities by matching templates of expected growth patterns. The results of these evaluations were somewhat disappointing because the program was inefficient and could not reach the level of sensitivity and specificity of human ph...

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