scholarly journals RESEARCH OF RADIO FREQUENCY SPECTROGRAMS USING METHODS OF LINGUISTIC ANALYSIS

2020 ◽  
Vol 2020 (3) ◽  
pp. 45-51
Author(s):  
Igor Aleksandrovich Tretiakov ◽  
Vladimir Vasilevich Danilov
Keyword(s):  
Radio Frequency ◽  
Minimum Distance ◽  
Linguistic Analysis ◽  
Arithmetic Mean ◽  
Laboratory Model ◽  
Radio Waves ◽  
Abscissa Axis ◽  
Linguistic Description ◽  
Complexity Function ◽  
Analysis System

The article presents the study of experimental curves of the spectral spectra of radio waves of the FM-range developed on a laboratory model. The algorithm was used to define sections, for which the complexity function took locally minimal values. The standard was determined for each section of the curve, in which all the arithmetic mean ordinates of all areas correspond to the certain class. For a more extended linguistic description of the experimental curves, it is proposed to compile the description taking into account the location of the curve sections on the abscissa axis. The obtained extended linguistic description of the curve will reflect not only classes of simple events, but their phases as well. As a result of applying the linguistic analysis system for the analysis of spectral radiograms, it can be inferred that the experimental curves are presented in the form of short and reliable rules for the analysis of the radiogram spectrum. The use of standards allows to accurately represent each chain of characters in each group with a minimum distance to the standard. The obtained extended descriptions quite accurately describe the behavior of the curves studied.

ATTENUATION OF RADIO FREQUENCY WAVES THROUGH THE EARTH

Geophysics ◽  
1952 ◽  
Vol 17 (2) ◽  
pp. 193-217 ◽  
Author(s):  
W. C. Pritchett
Keyword(s):  
Radio Frequency ◽  
Normal Values ◽  
Electromagnetic Theory ◽  
Deep Penetration ◽  
Radio Waves ◽  
Attenuation Constant ◽  
A Value ◽  
The Earth ◽  
Radio Frequency Waves

Evidence has been presented by several investigators indicating the possibility that radio waves penetrate sufficiently deep into the earth to be useful in prospecting for oil. Conventional electromagnetic theory used with normal values of the earth constants indicates, however, that the attenuation is too great to allow the signal to be used after propagation through significant distances of shale. To settle the above question an experiment was conceived and carried out in which the signal level in the earth was measured at various distances from a battery‐operated transmitter operating at 1,652 kc suspended in an uncased, mud‐filled hole by a mud‐saturated rope. The mud resistivity was matched to that of the 40 foot thick shale section used in order that the entire immediate region would be as nearly as possibly homogeneous. The receiver was also battery‐operated and suspended by a cable in other similar mud‐filled holes at various distances from the first hole. The attenuation constant in shale was found to be 0.231 nepers/foot (2 db/foot), which is much too large to give any hope of deep penetration. A few measurements in a limestone section gave a value of 0.086 nepers/foot, which is also too large to be useful. Although these values are quite high, they are lower than theory predicts for these earth resistivities by a factor of about two.

scholarly journals Analiza wydawnictw efemerycznych – ujęcie lingwistyczne

2020 ◽  
Vol 39 ◽  
pp. 183-198
Author(s):  
Marta Śleziak ◽  
Izabela Olszewska
Keyword(s):  
Interdisciplinary Approach ◽  
Linguistic Analysis ◽  
Accurate Analysis ◽  
Linguistic Description ◽  
Evaluative Language ◽  
Free City Of Danzig

The aim of the paper is to present ephemeral printed texts as an object of a linguistic description as well as to submit the model of analysis in practice. Texts called as ephemera are usually an object of a non-linguistically targeted interdisciplinary approach, although ephemera, regardless of type and style, can be subject to the scheme of a linguistic analysis. The submitted Linguera model (lingua et ephemera) enables meticulous analysis of an ephemeral text followed by its detailed and accurate analysis. The model focuses on such aspects as the role of context, evaluative language, contents and form of ephemera, as well as analytical map designing. The proposal of analysis is presented on the material of the ephemera collection from the Free City of Danzig (1920 – 1939).

Radio Frequency Identification Systems Security Challenges in Supply Chain Management

2019 ◽  
pp. 220-242 ◽  
Author(s):  
Kamalendu Pal
Keyword(s):  
Supply Chain ◽  
Supply Chain Management ◽  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Security And Privacy ◽  
Automatic Identification ◽  
Radio Waves ◽  
Chain Management ◽  
Data Capturing ◽  
Stored Information

The radio frequency idtentification (RFID) is a wireless technology that enable automatic identification and extraction of stored information from any tagged object within a supply chain environment. A simple RFID system uses radio waves to collect and transfer data from a tag attached to an object linked to an RFID reader for identifying, tracking, and data capturing. However, RFID-based systems have numerous security- and privacy-related threats for the deployment of such technology in supply chain automation purpose. This chapter explains the technical fundamentals of RFID systems and its security threats. It also classifies the existing security and privacy threats into those which target the RFID components such as the tag, the communication channel, and the overall system threats. Finally, the chapter discusses the open research challenges that need further investigation, especially with the rapid introduction of diverse RFID applications in supply chain management (SCM).

Могућности унапређења продаје примјеном RFID технологије // Opportunity for Sales Promotion Using the RFID Technology

2018 ◽  
Vol 13 (22) ◽  
pp. 285
Author(s):  
Тихомир Латиновић ◽  
Драгана Прерадовић
Keyword(s):  
Radio Frequency ◽  
Enterprise Resource Planning ◽  
Radio Frequency Identification ◽  
Control Unit ◽  
Resource Planning ◽  
Sales Promotion ◽  
Customer Relationship ◽  
Radio Waves ◽  
Digital Identification ◽  
Frequency Identification

Резиме: Технологија идентификације путем радио-таласа (Radio Frequency Identifi cation - RFID) прeдстaвљa рeвoлуциoнaрни приступ у индустриjскoj кoнтрoли и имa вeлики пoтeнциjaл зa унaпрeђeњe прoдaje прaћeњeм диjeлoвa или циjeлих прoизвoдa крoз прoизвoдњу, склaдиштeњe, дистрибуциjу, тe нa крajу тoкoм циjeлoг лaнцa нaбaвкe (Landt, 2001). У рaду ћe бити прeдстaвљeни oснoвни кoнцeпти RFID систeмa, њихoвa улoгa у прeдузeћимa тргoвинскe дjeлaтнoсти и импликaциje нa пeрфoрмaнсe прoдaje. RFID систeми кoристe рaдиo-фрeквeнциje зa прeнoс пoдaтaкa из eлeктрoнских урeђaja дo читaчa, a зaтим читaч прoсљeђуje примљeнe пoдaткe кoнтрoлнoj jeдиници зa дaљу oбрaду. Oвe кoнтрoлнe jeдиницe мoгу бити пoвeзaнe сa ERP (Enterprise Resource Planning) и CRM (Customer Relationship Management) систeмимa. У дaнaшњeм дигитaлизoвaнoм свиjeту, тeхнoлoгиja идeнтификaциje путeм рaдиo-фрeквeнциja пoстaje глaвни нaчин дигитaлнe идeнтификaциje зa људe, живoтињe, прeдмeтe, згрaдe, и друго.Summary: Radio Frequency Identification (RFID) is a revolution in industrial control, because it has the potential to simplify and make more robust tracking of parts or part carriers through manufacture, storage, distribution, and at the end of the supply chain (Landt, 2001). RFID systems use radio waves to transfer data from electronic devices (TAG) to the reader, and then the reader forwards the received data to the control unit further processing. In today’s digitized world, radio frequency identification (RFID) is becoming a major way of digital identification for people, animals, objects, buildings, etc.

Analysis of the defocusing of radio waves in the ionosphere due to the influence of an intense radio-frequency radiation field

1985 ◽  
Vol 28 (8) ◽  
pp. 655-665 ◽  
Author(s):  
G. N. Boiko ◽  
V. V. Vas'kov ◽  
S. F. Golyan ◽  
A. V. Gurevich ◽  
Ya. S. Dimant ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Radiation Field ◽  
Radio Waves ◽  
Radio Frequency Radiation ◽  
Intense Radio ◽  
Frequency Radiation

scholarly journals Effect of Radio Frequency from Cellular System on Human Body & Its Potential Remedy Li-Fi for Next Generation Wireless Network

2016 ◽  
Vol 5 (3) ◽  
pp. 45
Author(s):  
Pragati Sharma ◽  
A. K. Gautam
Keyword(s):  
Radio Frequency ◽  
Mobile Phone ◽  
Human Body ◽  
Mobile Station ◽  
Cellular System ◽  
Behavioral Changes ◽  
Radio Waves ◽  
Adverse Health Outcomes ◽  
Effects Of Radiation

<div><p><em>There is a huge body of evidence in the literature that exposure to radio frequency (RF) has been linked to a variety of adverse health outcomes that may have significant health problems for user of mobile phone. Credible scientific evidences are there that RF radiation from cellular system is responsible to create effect that may be either short term (sleep disruption, lack of concentration, behavioral changes etc) or  long term (DNA damage, altered immune function, miscarriage risks, etc.). Cellular region of frequency spectrum covers a vital range of frequency worldwide. It uses Base Transceiver Stations (BTS) and Mobile Station (MS) for its operation therefore the emission of energy from BTS and MS is quite dangerous and needs everyone attention. In second generation systems, BTS works on frequency reuse concept and after few kilometers, we found another BTS to serve the mobile phone. BTS power gets reduced as the distance from BTS to MS increases. At such condition, mobile starts to emit more power to maintain the link and sometimes switches to another nearby  BTS area. A new emerging technology, Light- Fidelity (Li-Fi) is in consideration for future use of communication because it is capable to work safe against health hazards. It can be understood as a carrier to transmit data wirelessly in spite of using radio waves.</em><em> </em></p></div><em>In this paper, we tried to check the effects of radio frequency at various conditions. These conditions are studied carefully and a comparative analysis is done (based on available literature) to aware mankind regarding harmful effects of radiation from cellular system on human body and also focus on its proposed remedy to overcome the hazardous effects of electromagnetic radiation.</em>

scholarly journals Language mechanisms of building the ironic texts and ways of their linguistic research (linguistic pragmatic aspect)

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Tatiana Vladimirovna Chernyshova
Keyword(s):  
Semantic Analysis ◽  
Linguistic Analysis ◽  
Court Case ◽  
Language Play ◽  
Linguistic Description ◽  
Linguistic Research ◽  
Contemporary Media ◽  
Pragmatic Aspect ◽  
Media Texts ◽  
Text Content

The article is devoted to the study of means and ways of modeling the comic effect in contemporary ironic media texts as well as to characterizing the method of their linguistic description in the linguistic pragmatic aspect. Special attention is paid to the ways of linguistic analysis of the conflict in ironic media text, which is the object of a court case. Within the complex linguistic analysis, including the semantic analysis to reveal the “semantic aspects,” and on the material of the editions Kommersant and Moskovsky Komsomolets, the authors described the signals of irony as language play and as a socially marked way of communication, defining their stylistic variety. On the example of ironic media text which is the object of a court case, it is established that the basic way to model the comic (ironic) subtext in contemporary media texts is the contrast used both at textual and subtextual levels. The article draws the conclusion that the comic form of presentation of the ironic text content cannot be the object of a court case because it is connected with the evaluation and expression of the author’s own opinion.

scholarly journals Influence of electromagnetic radiations of the radio-frequency range on vegetative maintenance of cardiovascular reactions of the human body

2018 ◽  
pp. 56-62
Author(s):  
L. A. Sergeeva ◽  
V. S. Sergeeva ◽  
D. G. Olenev ◽  
A. I. Valchenko ◽  
E. I. Glebova
Keyword(s):  
Adverse Effects ◽  
Radio Frequency ◽  
Cardiovascular System ◽  
Exposure Time ◽  
Human Body ◽  
Radio Waves ◽  
Frequency Range ◽  
Electromagnetic Radiations ◽  
Functional Examination ◽  
Cardiovascular Reactions

With the help of questionnaires, medical exam and functional examination of students was found a positive correlation between the formation of vagotonic reactions of the cardiovascular system and the exposure time of the EMR radio frequency range, as well as the appearance of signs of neurocirculatory dystonia and other pre-nosological symptoms of adverse effects radio waves.

scholarly journals Radio Frequency Identification (RFID) Technology: Gaining A Competitive Value Through Cloud Computing

2010 ◽  
Vol 14 (5) ◽  
Author(s):  
Daniel Owunwanne ◽  
Rajni Goel
Keyword(s):  
Cloud Computing ◽  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Small Businesses ◽  
Radio Waves ◽  
Rfid Technology ◽  
Implementation Barriers ◽  
Supply Chain System ◽  
Frequency Identification ◽  
Retail Organizations

Radio Frequency Identification (RFID) uses radio waves to track the movement of goods through the Supply Chain system. The identity of an object is captured with a unique serial number that is transmitted wirelessly to a computer system. Small businesses are facing RFID implementation barriers.  The barriers range from the perspective of the consumer-goods manufacturers and retail organizations.  We propose implementing RFID technology using cloud computing framework to alleviate or reduce the implementation cost which is the most prevalent barrier.

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