The Effect of Observational Technique on Brightness-Enhancement

1965 ◽  
Vol 78 (3) ◽  
pp. 471 ◽  
Author(s):  
Carroll M. Colgan
Keyword(s):  
Brightness Enhancement ◽  
Observational Technique

Catalogue reduction techniques

1978 ◽  
Vol 48 ◽  
pp. 389-390 ◽  
Author(s):  
Chr. de Vegt
Keyword(s):  
Adjustment Process ◽  
Proper Motions ◽  
Measuring Process ◽  
Aerial Photogrammetry ◽  
Reduction Techniques ◽  
Observational Technique ◽  
The Common ◽  
Astrometric Data

AbstractReduction techniques as applied to astrometric data material tend to split up traditionally into at least two different classes according to the observational technique used, namely transit circle observations and photographic observations. Although it is not realized fully in practice at present, the application of a blockadjustment technique for all kind of catalogue reductions is suggested. The term blockadjustment shall denote in this context the common adjustment of the principal unknowns which are the positions, proper motions and certain reduction parameters modelling the systematic properties of the observational process. Especially for old epoch catalogue data we frequently meet the situation that no independent detailed information on the telescope properties and other instrumental parameters, describing for example the measuring process, is available from special calibration observations or measurements; therefore the adjustment process should be highly self-calibrating, that means: all necessary information has to be extracted from the catalogue data themselves. Successful applications of this concept have been made already in the field of aerial photogrammetry.

Studying the Use of Public Spaces in the Library

2013 ◽  
Author(s):  
Francine May
Keyword(s):  
Canadian Journal ◽  
Public Spaces ◽  
Library Science ◽  
Full Paper ◽  
Public Places ◽  
The Public ◽  
Observational Technique ◽  
Mental Mapping ◽  
Mapping Observation

Methods for studying the public places of libraries, including mental mapping, observation and patron mapping are reviewed. Reflections on the experience of adapting an observational technique for use in multiple different library spaces are shared. Sont passées en revue les méthodes pour étudier la place publique des bibliothèques, y compris les représentations mentales, l’observation et la catégorisation des usagers. L’auteure partage ses réflexions sur l’expérience d’adapter une technique d’observation à différents espaces de bibliothèque. ***Full paper in the Canadian Journal of Information and Library Science***

Diverticulization Duodenal Distal Technique for Injury Angle Duodenojejunal

2016 ◽  
Vol 3 (1) ◽  
pp. 265-268
Author(s):  
Luis R. Martinez ◽  
Pablo Valsangiacomo ◽  
Gabriela Espinosa ◽  
Gabriela Wagner ◽  
Roberto Taruselli
Keyword(s):  
Case Series ◽  
Average Hospital ◽  
Single Anastomosis ◽  
Observational Technique ◽  
Mortality Case ◽  
Management Techniques ◽  
The Right ◽  
Serious Injuries ◽  
Suture Failure ◽  
Initial Results

Duodenojejunal injuries region at the angle of Treitz are rare, variable etiology and often associated with other serious injuries. In trauma situations with perforations and bleeding, his approach is often difficult. The primary suture, resection / anastomosis and duodenal exclusion are the usual for trauma management techniques in this region. The aim of this paper is to show the initial results of an alternative for injuries duodenojejunal angle (IDJA) by filling a retrospective, descriptive and observational technique, 12 patients operated were analyzed over a period of 15 years, carriers IDJA, age: 34, 11 gunshot wound. 92% of the cases had other associated visceral injuries. The average for the ISS was 29. In all cases located in duodenum duodenojejunoanastomosis II, via the right lateromesenterica upon closing section and duodenum level III was performed. 58% of cases were complicated. Mortality case series were 1 (8%) digestive suture failure colon. Average Hospital stay 26 days. Conclusion: A simple, safe and maintaining gut physiology is proposed technique; with a single anastomosis, located in well-vascularized area and away from bruising and contaminated areas. The complications were pancreatic fistula and digestive suture failure.

Underwater Image Enhancement Method Combining color and Luminance

2020 ◽  
Vol 13 ◽  
Author(s):  
ZHAO Baiting ◽  
WANG Feng ◽  
JIA Xiaofen ◽  
GUO Yongcun ◽  
WANG Chengjun
Keyword(s):  
Image Enhancement ◽  
Color Space ◽  
Low Frequency ◽  
Brightness Enhancement ◽  
Color Distortion ◽  
Underwater Image ◽  
Enhancement Method ◽  
Frequency Components ◽  
Image Contour ◽  
Objective Indicators

Background:: Aiming at the problems of color distortion, low clarity and poor visibility of underwater image caused by complex underwater environment, a wavelet fusion method UIPWF for underwater image enhancement is proposed. Methods:: First of all, an improved NCB color balance method is designed to identify and cut the abnormal pixels, and balance the color of R, G and B channels by affine transformation. Then, the color correction map is converted to CIELab color space, and the L component is equalized with contrast limited adaptive histogram to obtain the brightness enhancement map. Finally, different fusion rules are designed for low-frequency and high-frequency components, the pixel level wavelet fusion of color balance image and brightness enhancement image is realized to improve the edge detail contrast on the basis of protecting the underwater image contour. Results:: The experiments demonstrate that compared with the existing underwater image processing methods, UIPWF is highly effective in the underwater image enhancement task, improves the objective indicators greatly, and produces visually pleasing enhancement images with clear edges and reasonable color information. Conclusion:: The UIPWF method can effectively mitigate the color distortion, improve the clarity and contrast, which is applicable for underwater image enhancement in different environments.

scholarly journals Coding Scheme for Assessment of Students’ Explanations and Predictions

2017 ◽  
Vol 8 ◽  
Author(s):  
Mihael Gojkošek ◽  
Gorazd Planinšič ◽  
Josip Sliško
Keyword(s):  
Reliability Analysis ◽  
White Light ◽  
Assessment Tool ◽  
Self Assessment ◽  
Brightness Enhancement ◽  
Coding Scheme ◽  
Reliable Assessment

In the process of analyzing students’ explanations and predictions for interaction between brightness enhancement film and beam of white light, a need for objective and reliable assessment instrumentarose. Consequently, we developed a codingscheme that was mostly inspired by the rubrics for self-assessment of scientific abilities. In the paper we present the grading categories that were integrated in the coding scheme, and descriptions of criteria used for evaluation of students work. We report the results of reliability analysis of new assessment tool and present some examples of its application.

scholarly journals EXPRESSIVE SPEECH ACTS IN THE STATUSES OF THE FACEBOOK USERS

PARADIGM ◽  
2020 ◽  
Vol 3 (1) ◽  
pp. 1
Author(s):  
Widdya Syafitri
Keyword(s):  
Social Network ◽  
Data Analysis ◽  
Speech Acts ◽  
Speech Act ◽  
Observational Method ◽  
Expressive Speech ◽  
Observational Technique ◽  
The Social ◽  
Data Source

<p>This research is conducted based on two purposes; they are to identify the types of expressive speech act found in the statuses of the Facebook users, and to explain the modes of expressive utterance used in the statuses. Therefore, the data source is the social network that is Facebook and the data are the statuses of the Facebook users. The data are collected by using observational method, followed by non-participant observational technique and taking-note technique. The data analysis is based on pragmatic identity method proposed by Sudaryanto (2015) which is also supported by the theory of the types of expressive speech act by Ronan (2015), and theory about the modes of utterance from Alwi, et al (2000). The analysis result shows that there are fourteen types of expressive speech act in the statuses. They are the expression of agreement, disagreement, apology, gratitude, sorrow (sadness), exclamation (complaint), volition (hope), anger, disappointment, encouragement, satire, annoyance, pride, and congratulation. Meanwhile, the modes of expressive speech act that are used consist of declarative mode, interrogative mode, and exclamative mode. The importance of this research is to reveal or show that there is something else the Facebook users want to say behind their statuses. Sometimes, they do not really state what they mean in their statuses. They use indirect way and there lies the use of expressive speech act which can be stated in different way.</p>

Brightness enhancement and opponent-colors theory

1966 ◽  
Vol 6 (11-12) ◽  
pp. 689-699 ◽  
Author(s):  
Gerald S. Wasserman
Keyword(s):  
Brightness Enhancement

scholarly journals Entrainment of theta, not alpha, oscillations is predictive of the brightness enhancement of a flickering stimulus

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Jennifer K. Bertrand ◽  
Nathan J. Wispinski ◽  
Kyle E. Mathewson ◽  
Craig S. Chapman
Keyword(s):  
Alpha Oscillations ◽  
Brightness Enhancement
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