scholarly journals Characteristics of Video Traffic from Videoconference Applications: From H.261 to H.264

2013 ◽  
Vol 2013 ◽  
pp. 1-10
Author(s):  
S. Domoxoudis ◽  
S. Kouremenos ◽  
V. Loumos ◽  
A. Drigas
Keyword(s):  
Autoregressive Model ◽  
The Other ◽  
Strong Correlations ◽  
Direct Relation ◽  
Video Traffic ◽  
Frame Size ◽  
Software Applications ◽  
Frequency Histogram ◽  
Other Hand ◽  
Video Frames

This paper presents modelling results for H.26x video traffic generated by popular videoconference software applications. The analysis of videoconference data, that were measured during realistic point-point videoconference sessions, led us to the general conclusion that the traffic can be distinguished into two categories: unconstrained and constrained. In the unconstrained traffic, there is a direct relation between the encoder and the form of the frequency histogram of the frame-size sequence. Moreover, for this type of traffic, strong correlations between successive video frames can be found. On the other hand, where bandwidth constraints are imposed during the encoding process, the generated traffic appears to exhibit similar characteristics for all the examined encoders with the very low autocorrelation values being the most notable one. On the basis of these results, this study proposes methods to calculate the parameters of a widely adopted autoregressive model for both types of traffic.

THE QUR’ANIC LEARNING SOFTWARE IN DIGITAL ERA: A THREAT TOWARDS THE VALUE OF QUR’ANIC LEARNING ORTODOXY IN INDONESIA

2021 ◽  
Vol 26 (02) ◽  
pp. 1-15
Author(s):  
Beni Muhammad
Keyword(s):  
Logical Consequence ◽  
Technological Advance ◽  
The Other ◽  
Learning Method ◽  
Software Applications ◽  
Digital Era ◽  
Technological Improvement ◽  
Other Hand ◽  
Sacred Values ◽  
Learning Software

The using of software applications nowadays bacomes very popular and it had been increased amongs the gadget users. This kind of technological advance also touched the Qur’anic learning proccess in Indonesia. In one hand, the emergence of Qur’anic learning softwares can stimulate children’s interest. They also provide a lot of features that will make the children fastly understand and practice the Qur’anic reciting. On the other hand, this kind of learning method can threat the value of Qur’anic orthodoxy wich had been applied amongs traditional Muslim since the emergence of Islam in Indonesia. Some resources have noted that there were some sacred values and courtesies perpetuated by traditional Muslims while teaching Qur’anic reciting. This article will track the historical journey of Qur’anic learnings in Indonesia and discuss how the emergence of Qur’anic Learning software (as the logical consequence of technological improvement) can threat the existence of some ancient orthodoxies toward the Qur’an.

scholarly journals Konstruksi Identitas Niqabis melalui Selfie Instagram

2020 ◽  
Vol 10 (2) ◽  
pp. 159
Author(s):  
Diana Safinda Asran ◽  
Wening Udasmoro
Keyword(s):  
Political Economy ◽  
Eye Gaze ◽  
The Other ◽  
Religious Communities ◽  
Frame Size ◽  
Other Hand ◽  
The Media

The media has long been used by certain religious communities to introduce their culture in society. Like the veiled Muslim group on Instagram which is called the niqabis. Automatically the existence of the niqabis is getting closer to society and is reaping significant popularity. Now the niqab is not only an attribute of religion, but also as part of an identity to a commodity of political economy. In this research, we will study further how niqabis use posts, especially selfies to construct their identity through Instagram, as done by @diananurliana and @wardahmaulina_. Diana Nurliana and Wardah Maulina are influencers and have consistently built their identity as niqabis. The analysis carried out on the two accounts shows that identity is formed through selfies with information. Both Diana and Wardah take advantage of eye gaze, frame size to corner to be prepared with the viewer. While the caption is used to provide information on photos and also as a space for expression and opinion. On the other hand, what is uploaded also aims to form subjectivity to create branding. Keywords: Identity; Instagram; Niqab; Niqabis; Selfie. 

Birthweight and reproductive careers

1983 ◽  
Vol 15 (4) ◽  
pp. 453-464 ◽  
Author(s):  
R. Carr-Hill ◽  
M. Samphier
Keyword(s):  
Social Class ◽  
Gestational Age ◽  
Genetic Factors ◽  
The Other ◽  
Maternal Height ◽  
Strong Correlations ◽  
Live Births ◽  
Other Hand

SummaryIt is generally thought that birthweight varies with the sex of the infant, gestational age and parity; there is, however, some controversy as to whether birthweight increases monotonically with parity. Further, some have suggested that maternal height and social class are also important, whilst earlier authors stressed the importance of genetic factors. This paper re-examines these relationships on the basis of an analysis of data on 6472 women who had a sequence of two or more singleton live births. The analysis shows first that the raw birthweights increase up to the fourth birth and that there are strong correlations between successive birthweights. However, when the birthweights are standardized for gestational age, maternal height, parity and sex, the relation between birthweight and parity almost disappears. On the other hand, the correlations between successive birthweights remain among the standardized scores, suggesting that there are other features specific to the mother which affect birthweight.

scholarly journals The Science of Harmony: A Psychophysical Basis for Perceptual Tensions and Resolutions in Music

Research ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-22
Author(s):  
Paul Yaozhu Chan ◽  
Minghui Dong ◽  
Haizhou Li
Keyword(s):  
Music Theory ◽  
Traditional Music ◽  
Single Equation ◽  
Complex Problem ◽  
The Other ◽  
Strong Correlations ◽  
Other Hand ◽  
And Mathematics

This paper attempts to establish a psychophysical basis for both stationary (tension in chord sonorities) and transitional (resolution in chord progressions) harmony. Harmony studies the phenomenon of combining notes in music to produce a pleasing effect greater than the sum of its parts. Being both aesthetic and mathematical in nature, it has baffled some of the brightest minds in physics and mathematics for centuries. With stationary harmony acoustics, traditional theories explaining consonances and dissonances that have been widely accepted are centred around two schools: rational relationships (commonly credited to Pythagoras) and Helmholtz’s beating frequencies. The first is more of an attribution than a psychoacoustic explanation while electrophysiological (amongst other) discrepancies with the second still remain disputed. Transitional harmony, on the other hand, is a more complex problem that has remained largely elusive to acoustic science even today. In order to address both stationary and transitional harmony, we first propose the notion of interharmonic and subharmonic modulations to address the summation of adjacent and distant sinusoids in a chord. Based on this, earlier parts of this paper then bridges the two schools and shows how they stem from a single equation. Later parts of the paper focuses on subharmonic modulations to explain aspects of harmony that interharmonic modulations cannot. Introducing the concept of stationary and transitional subharmonic tensions, we show how it can explain perceptual concepts such as tension in stationary harmony and resolution in transitional harmony, by which we also address the five fundamental questions of psychoacoustic harmony such as why the pleasing effect of harmony is greater than that of the sum of its parts. Finally, strong correlations with traditional music theory and perception statistics affirm our theory with stationary and transitional harmony.

Isovist Analysis Captures Properties of Space Relevant for Locomotion and Experience

Perception ◽  
10.1068/p5587 ◽  
2007 ◽  
Vol 36 (7) ◽  
pp. 1066-1083 ◽  
Author(s):  
Jan M Wiener ◽  
Gerald Franz ◽  
Nicole Rossmanith ◽  
Andreas Reichelt ◽  
Hanspeter A Mallot ◽  
...  
Keyword(s):  
The Other ◽  
Strong Correlations ◽  
Affective Experience ◽  
Other Hand ◽  
Indoor Scenes ◽  
Small Set ◽  
The One ◽  
Indoor Spaces

In a series of exploratory experiments we investigated interrelations between structure and shape of architectural indoor spaces on the one hand, and affective experience and navigation behaviour on the other hand. For this, isovist-based descriptions of 16 virtual indoor scenes were correlated with behavioural data from the experimental tasks. For all tasks—two active navigation tasks and an introspective appraisal of experiential qualities—strong correlations between subjects' behaviour and a small set of quantitative measurands derived from the isovists were found. The outcomes suggest that isovist analysis captures behaviourally relevant properties of space and is therefore a promising general means for predicting central experiential qualities of architecture and navigation behaviour.

Promoting Wine on the Internet

2011 ◽  
Vol 1 (4) ◽  
pp. 48-63
Author(s):  
J. Freitas Santos
Keyword(s):  
Performance Measures ◽  
The Other ◽  
The Internet ◽  
Strong Correlations ◽  
Initial Attempt ◽  
Design Quality ◽  
Design Elements ◽  
Other Hand ◽  
Rss Feeds

This study examines the content of Portuguese wine blogs and addresses two main questions: (i) which content and design elements of Portuguese wine blogs have more impact on the promotion of wine, and (ii) how can the content and design quality of wine blogs be assessed and improved. To answer these questions, a number of features of wine blogs are examined, and an initial attempt is made to describe the profile, uses and practices of Portuguese wine bloggers. Strong correlations were found between performance measures (posts, comments and traffic). In addition, it was found that one of the main marketing features that bloggers can offer was in rating wines. On the other hand, presentation features were found to account for very little regarding the performance of the blog. Finally, accessibility features, such as cross-references and RSS/Feeds that tend to increase blog traffic, are only used by a minority of Portuguese bloggers.

Promoting Wine on the Internet

2013 ◽  
pp. 279-294
Author(s):  
J. Freitas Santos
Keyword(s):  
Performance Measures ◽  
The Other ◽  
The Internet ◽  
Strong Correlations ◽  
Initial Attempt ◽  
Design Quality ◽  
Design Elements ◽  
Other Hand ◽  
Rss Feeds

This study examines the content of Portuguese wine blogs and addresses two main questions: (i) which content and design elements of Portuguese wine blogs have more impact on the promotion of wine, and (ii) how can the content and design quality of wine blogs be assessed and improved. To answer these questions, a number of features of wine blogs are examined, and an initial attempt is made to describe the profile, uses and practices of Portuguese wine bloggers. Strong correlations were found between performance measures (posts, comments and traffic). In addition, it was found that one of the main marketing features that bloggers can offer was in rating wines. On the other hand, presentation features were found to account for very little regarding the performance of the blog. Finally, accessibility features, such as cross-references and RSS/Feeds that tend to increase blog traffic, are only used by a minority of Portuguese bloggers.

A study of cometary eruptions through OH radio-lines

1999 ◽  
Vol 173 ◽  
pp. 249-254
Author(s):  
A.M. Silva ◽  
R.D. Miró
Keyword(s):  
Short Duration ◽  
Growth Curves ◽  
The Other ◽  
Initial Mass ◽  
Radio Lines ◽  
Other Hand ◽  
Sudden Rise

AbstractWe have developed a model for theH2OandOHevolution in a comet outburst, assuming that together with the gas, a distribution of icy grains is ejected. With an initial mass of icy grains of 108kg released, theH2OandOHproductions are increased up to a factor two, and the growth curves change drastically in the first two days. The model is applied to eruptions detected in theOHradio monitorings and fits well with the slow variations in the flux. On the other hand, several events of short duration appear, consisting of a sudden rise ofOHflux, followed by a sudden decay on the second day. These apparent short bursts are frequently found as precursors of a more durable eruption. We suggest that both of them are part of a unique eruption, and that the sudden decay is due to collisions that de-excite theOHmaser, when it reaches the Cometopause region located at 1.35 × 105kmfrom the nucleus.

Closing the GAP—A 5Å Scanning Microscope

1969 ◽  
Vol 27 ◽  
pp. 6-7
Author(s):  
A. V. Crewe
Keyword(s):  
Normal Form ◽  
The Other ◽  
Resolving Power ◽  
Scanning Microscope ◽  
Conventional Microscope ◽  
Other Hand ◽  
Closing The Gap ◽  
Thermal Sources ◽  
Better Than ◽  
Transmission Microscope

We have become accustomed to differentiating between the scanning microscope and the conventional transmission microscope according to the resolving power which the two instruments offer. The conventional microscope is capable of a point resolution of a few angstroms and line resolutions of periodic objects of about 1Å. On the other hand, the scanning microscope, in its normal form, is not ordinarily capable of a point resolution better than 100Å. Upon examining reasons for the 100Å limitation, it becomes clear that this is based more on tradition than reason, and in particular, it is a condition imposed upon the microscope by adherence to thermal sources of electrons.

Life Beyond 1MeV

1980 ◽  
Vol 38 ◽  
pp. 30-33
Author(s):  
K.H. Westmacott
Keyword(s):  
Electron Microscopy ◽  
Past Experience ◽  
The Other ◽  
Good Case ◽  
Other Hand ◽  
The U.S

Life beyond 1MeV – like life after 40 – is not too different unless one takes advantage of past experience and is receptive to new opportunities. At first glance, the returns on performing electron microscopy at voltages greater than 1MeV diminish rather rapidly as the curves which describe the well-known advantages of HVEM often tend towards saturation. However, in a country with a significant HVEM capability, a good case can be made for investing in instruments with a range of maximum accelerating voltages. In this regard, the 1.5MeV KRATOS HVEM being installed in Berkeley will complement the other 650KeV, 1MeV, and 1.2MeV instruments currently operating in the U.S. One other consideration suggests that 1.5MeV is an optimum voltage machine – Its additional advantages may be purchased for not much more than a 1MeV instrument. On the other hand, the 3MeV HVEM's which seem to be operated at 2MeV maximum, are much more expensive.

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