scholarly journals Spreading-Based Voice Encryption by Means of OVSF Codes

2019 ◽  
Vol 10 (1) ◽  
pp. 112 ◽  
Author(s):  
Diego Renza ◽  
Dora M. Ballesteros ◽  
Estibaliz Martinez
Keyword(s):  
Computational Cost ◽  
Recovery Process ◽  
Noise Signal ◽  
Point Of View ◽  
Spreading Factor ◽  
Retrieval Time ◽  
High Entropy ◽  
Fixed Length ◽  
Variable Length Codes ◽  
The Ideal

This paper presents a new methodology to encrypt voice signals, in such a way that they simulate being a noise signal. The objective is to obtain a signal that does not generate suspicions about its content, while protecting the message. The process is based on the spread and scrambling of the signal through the use of OVSF (orthogonal variable spreading factor) codes. The security of the method is based mainly on the input value used for the randomization phase. From a computational cost point of view, the use of fixed-length codes allows for a shorter retrieval time compared to a similar method based on variable-length codes. Regarding the encrypted signal, its main characteristic is its high entropy (very close to the ideal value). Finally, in the recovery process, a signal identical to the original is obtained.

Optimization of Restoration Paths of Power System after Blackout

2013 ◽  
Vol 347-350 ◽  
pp. 1467-1472
Author(s):  
Wen Wei Huang ◽  
Gang Yao ◽  
Xiao Yan Qiu ◽  
Nian Liu ◽  
Guang Tang Chen
Keyword(s):  
Power System ◽  
Transmission Lines ◽  
Reactive Power ◽  
Minimum Spanning Tree ◽  
Operation Time ◽  
Combinatorial Problem ◽  
Weather Conditions ◽  
Recovery Process ◽  
Point Of View ◽  
Improved Genetic Algorithm

Optimization of restoration paths of power system after blackout is a multi-stage, multi-target, multi-variable combinatorial problem in the power system restoration. This paper presents a reasonable model and effectually method. The proposed model is considered as a typical partial minimum spanning tree problem from the mathematical point of view which considering all kinds of constraints. Improved data envelopment analysis (DEA) was used to get the weight which considering line charging reactive power, weather conditions, operation time and betweenness of transmission lines. The improved genetic algorithm method is employed to solve this problem. Finally, an example is given which proves the strategy of the line restoration can effectively handle the uncertainty of the system recovery process, to guarantee the system successfully restored after the catastrophic accidents.

Multilingualism and the Ideal of Unity in Diversity in the European Union. Key Concepts and Context

2020 ◽  
Vol 65 (2) ◽  
pp. 265-282
Author(s):  
Roxana-Maria Nistor-Gâz ◽  
Delia Pop-Flanja
Keyword(s):  
European Union ◽  
Cultural Diversity ◽  
Linguistic Diversity ◽  
Point Of View ◽  
The European Union ◽  
Cultural And Linguistic Diversity ◽  
Tower Of Babel ◽  
Key Concepts ◽  
Unity In Diversity ◽  
The Ideal

"In a world challenged by cultural diversity, this article aims to look at the great diversity of languages and cultures that coexist within the European Union. Building on the story of the Tower of Babel that explains, from a religious point of view, the cultural and linguistic diversity existing in the European Union, the authors tried to contextualize EU’s motto of “unity in diversity”, interpreted as an ideal involving a lot of effort and sometimes even many conflicts, but one that we should all fight for and strive to maintain. Keywords: linguistic diversity, ethnicity, nation, minority, majority, communication, unity in diversity"

Some Possible Lines of Development in Aircraft Engines

1921 ◽  
Vol 25 (123) ◽  
pp. 130-165
Keyword(s):  
Present State ◽  
State Of The Art ◽  
Point Of View ◽  
Aircraft Engines ◽  
Aero Engine ◽  
The Ideal

In the following paper the writer's aim is to indicate certain possible lines of development and research which his own investigations and preliminary experiments have shown to be at least worthy of serious consideration.If we review the present state of the art we find the position to be substantially as follows :—From a thermodynamic point of view the performance of the modern aero engine has approached so nearly to the ideal obtainable from the cycle on which it operates that there is little scope for improvement.

scholarly journals REPRESENTASI PEREMPUAN JAWA DALAM SERAT WULANG PUTRI: ANALISIS WACANA KRITIS

2019 ◽  
Vol 9 (3) ◽  
pp. 213
Author(s):  
Atin Fitriana
Keyword(s):  
Discourse Analysis ◽  
Critical Discourse Analysis ◽  
Cultural Context ◽  
Point Of View ◽  
Woman Writer ◽  
Critical Discourse ◽  
And Behavior ◽  
Attitudes And Behavior ◽  
The Ideal

<p>The Javanese culture has a specific perspective on the ideal figure of women. This perspective is generally manifested in the classical texts, for example, in Serat Wulang Putri Adisara. Written by Nyi Adisara. Serat Wulang Putri contains the teachings for royal daughters in living their life as Javanese women based on Javanese teachings. In this manuscript, the readers can see the women figure portrayed from the perspective of a woman writer. This paper discusses the ideal women’s discourse in Serat Wulang Putri using the approach of critical discourse analysis from van Dijk. The analysis is conducted by considering the text’s microstructure, macrostructure, and cultural context. Through the analysis, we can see the ideal discourse of Javanese women based on Serat Wulang Putri. Furthermore, the text discusses women as figures who must pay attention to their attitudes and behavior, and can control their hearts, minds, and feelings. In this case, the author uses the male point of view to describe the characteristics of ideal Javanese women. Javanese women are also described as a weak figure and must obey what men command or expect from them.</p>

scholarly journals The Criteria of Ideal Man as Seen from Female Gaze in Free!

K ta Kita ◽  
2019 ◽  
Vol 7 (2) ◽  
pp. 165-172
Author(s):  
Dita Berlian
Keyword(s):  
Personality Traits ◽  
Sex Role ◽  
Point Of View ◽  
Male Gaze ◽  
The Gaze ◽  
Female Gaze ◽  
Male Sex ◽  
Definition Of ◽  
Female Audience ◽  
The Ideal

Japanese animations (anime) are worldwide known. They are targeted to various kinds of audience. A drama-sport anime entitled Free! is rarely found as the targeted audience is female audience. Because Free! targets female audience, the definition of the ideal men is defined from the point of view of the female audience. Therefore, the gaze which is used to identify the male protagonists is female gaze. By using the theory of male gaze and traditional male sex role themes, I found that there is a combination of masculinity and femininity in the male protagonists in Free!. The combined characteristics are shown in the physical appearance, personality traits, and roles. The appearance of this type of an ideal man leads to a new concept in Japan which is called bishōnen. Keywords: Anime, ideal man, masculinity, femininity, female gaze, bishōnen.

scholarly journals MAKING THE CONTENTS OF LETTERS IN THE NOTARIS IN ISLAM'S LEGAL PERSPECTIVE

2017 ◽  
Vol 4 (2) ◽  
pp. 234
Author(s):  
Tubus Tubus
Keyword(s):  
Islamic Law ◽  
Field Research ◽  
Secondary Data ◽  
Point Of View ◽  
Primary Data ◽  
Legal Perspective ◽  
The Future ◽  
The Will ◽  
The Ideal ◽  
The Way

This paper aims to examine the making of the contents of wills examined from the point of view of Islamic law, in practice the reality in the lives of many people who have not heed the word basmallah as an incantation in the contents of the will for the followers of Islam. In this study using sociological juridical method, where the primary data obtained directly from field research, while secondary data obtained from the literature. The results obtained that the way of making the contents of the will and the absence of public legal awareness is optimal for the making of the contents of wills in accordance with Islamic law. And there are still weaknesses in the Making and Implementation of the contents of the current will, when the testament is oral, namely: The absence of the sacred intention or the noble intention of the collector must not necessarily occur; unsecured rights of the recipient, in the event of any problems of the future heirs of the pewasiat; there is a difficulty of proof in the absence of witnesses, when the will is brought before the Court. Law renewal in the making of the contents of the will in the presence of a notary in the perspective of Islamic law are: the reconstruction of its value, the Ideal Formation of the Will, the testament is done in writing witnessed by two witnesses and before the Notary. Ideal Construction Format of Testament Creation. The testament is written in the presence of two witnesses or in the form of a Deed or a Notary Deed. At the head of the will or the Deed or Notarial deed is included a sentence “Basmallah”.

scholarly journals Wind Turbine Noise Reduction from Seismological Data

2021 ◽  
Author(s):  
Janis Heuel ◽  
Wolfgang Friederich
Keyword(s):  
Signal To Noise Ratio ◽  
Low Cost ◽  
Computational Cost ◽  
Noise Signal ◽  
Noise Model ◽  
Threshold Function ◽  
High Signal ◽  
Time Data ◽  
Negative Effects ◽  
Before And After

&lt;p&gt;Over the last years, installations of wind turbines (WTs) increased worldwide. Owing to&lt;br&gt;negative effects on humans, WTs are often installed in areas with low population density.&lt;br&gt;Because of low anthropogenic noise, these areas are also well suited for sites of&lt;br&gt;seismological stations. As a consequence, WTs are often installed in the same areas as&lt;br&gt;seismological stations. By comparing the noise in recorded data before and after&lt;br&gt;installation of WTs, seismologists noticed a substantial worsening of station quality leading&lt;br&gt;to conflicts between the operators of WTs and earthquake services.&lt;/p&gt;&lt;p&gt;In this study, we compare different techniques to reduce or eliminate the disturbing signal&lt;br&gt;from WTs at seismological stations. For this purpose, we selected a seismological station&lt;br&gt;that shows a significant correlation between the power spectral density and the hourly&lt;br&gt;windspeed measurements. Usually, spectral filtering is used to suppress noise in seismic&lt;br&gt;data processing. However, this approach is not effective when noise and signal have&lt;br&gt;overlapping frequency bands which is the case for WT noise. As a first method, we applied&lt;br&gt;the continuous wavelet transform (CWT) on our data to obtain a time-scale representation.&lt;br&gt;From this representation, we estimated a noise threshold function (Langston &amp; Mousavi,&lt;br&gt;2019) either from noise before the theoretical P-arrival (pre-noise) or using a noise signal&lt;br&gt;from the past with similar ground velocity conditions at the surrounding WTs. Therefore, we&lt;br&gt;installed low cost seismometers at the surrounding WTs to find similar signals at each WT.&lt;br&gt;From these similar signals, we obtain a noise model at the seismological station, which is&lt;br&gt;used to estimate the threshold function. As a second method, we used a denoising&lt;br&gt;autoencoder (DAE) that learns mapping functions to distinguish between noise and signal&lt;br&gt;(Zhu et al., 2019).&lt;/p&gt;&lt;p&gt;In our tests, the threshold function performs well when the event is visible in the raw or&lt;br&gt;spectral filtered data, but it fails when WT noise dominates and the event is hidden. In&lt;br&gt;these cases, the DAE removes the WT noise from the data. However, the DAE must be&lt;br&gt;trained with typical noise samples and high signal-to-noise ratio events to distinguish&lt;br&gt;between signal and interfering noise. Using the threshold function and pre-noise can be&lt;br&gt;applied immediately on real-time data and has a low computational cost. Using a noise&lt;br&gt;model from our prerecorded database at the seismological station does not improve the&lt;br&gt;result and it is more time consuming to find similar ground velocity conditions at the&lt;br&gt;surrounding WTs.&lt;/p&gt;

Representations Subduced on an Ideal of a Lie Algebra

1962 ◽  
Vol 14 ◽  
pp. 293-303 ◽  
Author(s):  
B. Noonan
Keyword(s):  
Irreducible Representation ◽  
Lie Algebra ◽  
Lie Algebras ◽  
Kronecker Product ◽  
Point Of View ◽  
Irreducible Representations ◽  
Closed Field ◽  
Algebraically Closed Field ◽  
Representations Of Lie Algebras ◽  
The Ideal

This paper considers the properties of the representation of a Lie algebra when restricted to an ideal, the subduced* representation of the ideal. This point of view leads to new forms for irreducible representations of Lie algebras, once the concept of matrices of invariance is developed. This concept permits us to show that irreducible representations of a Lie algebra, over an algebraically closed field, can be expressed as a Lie-Kronecker product whose factors are associated with the representation subduced on an ideal. Conversely, if one has such factors, it is shown that they can be put together to give an irreducible representation of the Lie algebra. A valuable guide to this work was supplied by a paper of Clifford (1).

scholarly journals Sinking in Quicksand: The Demise of Victorian High Culture in America 1870-1915

2008 ◽  
Vol 3 ◽  
Author(s):  
Mitra Sharafi
Keyword(s):  
Mass Culture ◽  
Ethnic Origin ◽  
Turn Of The Century ◽  
Point Of View ◽  
Common Denominator ◽  
High Culture ◽  
Level Of Education ◽  
Modern Mass ◽  
The Cost ◽  
The Ideal

Today, the term Victorian implies snobbishness and rigidity. Our world, the result in part of a rebellion against Victorian formality and social hierarchy, celebrates the classless, the democratic, and the popular. It professes faith in the artistic judgment of all members of society regardless of ethnic origin, level of education or wealth. From the Victorian point of view, however, twentieth-century mass culture is accessible to all by appealing to the lowest common denominator; it is inclusive at the cost of a loss of education, refinement, and profundity. Turn-of-the-century America is the ideal subject for a study of the interaction between Victorian high culture and modern mass culture; the period from 1870 to 1915 was one of drastic cultural metamorphosis. Social change threatened the foundations of high culture and eventually killed it, but not without the unintentional help of the Victorians' own self-alienating behaviour.

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