scholarly journals Development of an algorithm for routing self­organizing radio networks

Connectivity ◽  
2020 ◽  
Vol 148 (6) ◽  
Author(s):  
V. O. Breslavsʹkyy ◽  
◽  
O. A. Laptyev ◽  
A. M. Pravdyvyy ◽  
S. A. Zozulya
Keyword(s):  
Information Exchange ◽  
Routing Algorithm ◽  
Base Stations ◽  
Dipole Antennas ◽  
Radio Channels ◽  
Self Organized ◽  
Transmission Of Information ◽  
The University ◽  
To Receive ◽  
Self Organizing

The routing algorithm in self-organizing radio channels is proponent. The following peculiarities: reduction of the overworld of the flow of critical signals in the grid for the transmission of the function of vibration (retrofitting) to the routes of all the nodes; Shows the adaptation and self-updating of the net for an alternative route when going out of the way of active retransmission universities. It has been deliver that the algorithm is protonated for the supremacy of the parameters for the reduction of the characteristics in proportion to the algorithms used. Self-organizing routing algorithm (SRA) of signs for mobile childless self-organized self-organizing links, in which universities may have the same status. The functions of the base stations distributed among the participants of the informational relationship. The SRA algorithm is intelligent, in which the possibility is laid by the university to independently decide on the fate of the route that/or is renewed. The measure, prompted in accordance with the SRA protocol, in the event that it is necessary to update the packages in the decimal universities, the form of the new session, so that it is possible to distribute information from the new universities. In case of transmission of information from a group of universities of the same university, the identifier allows the university to receive information and distribute information. In the designated algorithm, to encourage the route, the universities will only rotate the necessary fields and do not rotate the required fields, allowing the speed of an hour of processing and taking decisions about participating in the route. To process the package, it is not necessary to insert the package in one piece, to finish it without looking over the fields and adjusting the values. In the SRA algorithm for verifying the delivery of packets, the power of dipole antennas is to broadcast on all sides, so that it is possible to see any packets in the confirmation or to change a number of such packets. Fragmentation of the routing algorithm of self-organizing radio channels based on the parameter of interlocking the network traffic, changing the basic protocols of information exchange by 15%. This is general result to bring the overvoltage of developed this algorithm.

scholarly journals Construction of Trusted Routing Based on Trust Computation

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Bei Gong ◽  
Jingxuan Zhu ◽  
Yubo Wang
Keyword(s):  
Comprehensive Evaluation ◽  
Transmission Rate ◽  
Research Result ◽  
The Self ◽  
Base Stations ◽  
Main Research ◽  
Self Organized ◽  
Rate Transmission ◽  
Evaluation Of Data ◽  
Self Organizing

In the field of applied IoT, a large number of wireless sensor devices are tasked with data production and collection, providing IoT subjects with a large amount of basic data to support top-level IoT applications. However, there is a considerable risk of being attacked on such sensor networks that are organized in a wireless form. These relatively independent network devices have extremely limited performance and lifetime, a problem that can be supplemented in a centralized network with base stations by relying on the performance of the core nodes of the network, but in a decentralized self-organizing network, they can have a serious adverse impact on the implementation of security solutions. Considering the fundamental nature of the data generated by such end devices in IoT application services, the protection of their security is also directly related to the quality of upper layer services provided. The main research result of this paper is the design of a trust routing scheme for self-organizing networks. The scheme is based on a comprehensive evaluation of data transmission rate, transmission delay, and other factors related to the operation status of the self-organized network and improves the efficiency of the overall work of the self-organized network by reducing the performance consumption of individual nodes of the self-organized network and balancing the network load.

scholarly journals Barriers to Development of an App for Improving Staff-Family Communication at Israeli Geriatric Facilities

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 192-193
Author(s):  
Rinat Cohen ◽  
Gal Maydan ◽  
Shai Brill ◽  
Jiska Cohen-Mansfield
Keyword(s):  
Mobile App ◽  
Institutional Review Boards ◽  
Staff Members ◽  
Institutional Review ◽  
Implementation Planning ◽  
Institutional Adoption ◽  
Communication Needs ◽  
The University ◽  
And Control ◽  
To Receive

Abstract Family caregivers (FCs) of institutionalized noncommunicative older persons reported multiple unmet communication needs focusing on the need to receive reliable and regular updates on the patient’s condition. We have developed a mobile app for improving communication between FCs and healthcare professionals (HPs), based on 152 interviews with FCs and 13 discussion groups with HPs from four Israeli geriatric facilities. Both parties participated in app planning, tailoring it to their needs and abilities. App use implementation encountered major obstacles including the bureaucratic process concerning signing contracts between the university and software development firms, which hindered the process for a full year; data security department required disproportionate security levels that interfered with user experience and delayed the development process; the study’s definition varied across different ethics/Helsinki committees (Institutional Review Boards; IRBs), which led to different demands, e.g., insurance for medical clinical trials although no drugs or medical device were involved; lack of cooperation by mid-level staff members despite the institutional adoption of the app project; low utilization by HPs resulted in FCs not receiving timely responses. Despite these and other obstacles, we tested app use for 15 months in one facility in a pre-post-design with intervention and control groups, and we have since begun testing it in another facility. FCs who had used the app had positive feedback and wished to continue using it. App use optimization requires implementation planning, assimilating changes in each facility’s work procedures and HP’s engagement and motivation and thus depends on institutional procedures and politics.

scholarly journals Securing the wireless emergency alerts system

2021 ◽  
Vol 64 (10) ◽  
pp. 85-93
Author(s):  
Jihoon Lee ◽  
Gyuhong Lee ◽  
Jinsung Lee ◽  
Youngbin Im ◽  
Max Hollingsworth ◽  
...  
Keyword(s):  
Open Source ◽  
Open Source Software ◽  
Software Defined Radio ◽  
Severe Weather ◽  
Base Stations ◽  
The Public ◽  
Software Libraries ◽  
Amber Alerts ◽  
Almost All ◽  
To Receive

Modern cell phones are required to receive and display alerts via the Wireless Emergency Alert (WEA) program, under the mandate of the Warning, Alert, and Response Act of 2006. These alerts include AMBER alerts, severe weather alerts, and (unblockable) Presidential Alerts, intended to inform the public of imminent threats. Recently, a test Presidential Alert was sent to all capable phones in the U.S., prompting concerns about how the underlying WEA protocol could be misused or attacked. In this paper, we investigate the details of this system and develop and demonstrate the first practical spoofing attack on Presidential Alerts, using commercially available hardware and modified open source software. Our attack can be performed using a commercially available software-defined radio, and our modifications to the open source software libraries. We find that with only four malicious portable base stations of a single Watt of transmit power each, almost all of a 50,000-seat stadium can be attacked with a 90% success rate. The real impact of such an attack would, of course, depend on the density of cellphones in range; fake alerts in crowded cities or stadiums could potentially result in cascades of panic. Fixing this problem will require a large collaborative effort between carriers, government stakeholders, and cellphone manufacturers. To seed this effort, we also propose three mitigation solutions to address this threat.

Criticality: How Changes Preserve Stability in Self-Organizing Systems

2018 ◽  
Vol 40 (11) ◽  
pp. 1613-1629 ◽  
Author(s):  
Philippe Accard
Keyword(s):  
Complex System ◽  
System Theory ◽  
Social Systems ◽  
Theoretical Framework ◽  
Fundamental Issue ◽  
Self Organized ◽  
Self Organized Criticality ◽  
New Treatment ◽  
Over Time ◽  
Self Organizing

Self-organizing systems are social systems which are immanently and constantly recreated by agents. In a self-organizing system, agents make changes while preserving stability. If they do not preserve stability, they push the system toward chaos and cannot recreate it. How changes preserve stability is thus a fundamental issue. In current works, changes preserve stability because agents’ ability to make changes is limited by interaction rules and power. However, how agents diffuse the changes throughout the system while preserving its stability has not been addressed in these works. We have addressed this issue by borrowing from a complex system theory neglected thus far in organization theories: self-organized criticality theory. We suggest that self-organizing systems are in critical states: agents have equivalent ability to make changes, and none are able to foresee or control how their changes diffuse throughout the system. Changes, then, diffuse unpredictably – they may diffuse to small or large parts of the system or not at all, and it is this unpredictable diffusion that preserves stability in the system over time. We call our theoretical framework self-organiz ing criticality theory. It presents a new treatment of change and stability and improves the understanding of self-organizing.

Hydra collecting for citizen scientists v2

2021 ◽  
Author(s):  
Callen Hyland ◽  
Kimberly Sladek
Keyword(s):  
New York ◽  
Molecular Phylogenetics ◽  
Nuclear Dna ◽  
Model System ◽  
In The Wild ◽  
Submission Form ◽  
The University ◽  
To Receive ◽  
Business Media ◽  
Simple Materials

The freshwater cnidarian Hydra has been a model system for regeneration and developmental biology for over 250 years, but much remains unknown about their biodiversity and global distribution. As a citizen scientist, you can contribute to our understanding of Hydra in the wild by becoming a "Hydra Hunter". All it takes is a few simple materials and a little patience. Collecting Hydra in the wild can be challenging. You will certainly not find them everywhere you look. Keep in mind that NOT finding Hydra is still useful information because this will help us understand the environmental factors that effect their distribution. Metadata submission form: https://forms.gle/cAZCiiRCyE922G5t5 Please contact [email protected] for more information or to receive a Hydra collecting kit. Hydra collecting kits were purchased with a grant to Kimberly Sladek from the University of San Diego Associated Students Government. Thank you to Rob Steele for helpful feedback on this protocol. References: Campbell, R. D. (1983). Hydra Collecting. In H. M. Lenhoff (Ed.). Hydra: Research Methods. New York: Springer Science + Business Media. Martínez, D. E., et al. (2010). Phylogeny and biogeography of Hydra (Cnidaria: Hydridae) using mitochondrial and nuclear DNA sequence. Molecular Phylogenetics and Evolution, 57, 403-410. doi:10.1016/j.ympev.2010.06.016

Self-Organizing Spectrum Access with Geo-Location Database

2015 ◽  
pp. 254-272 ◽  
Author(s):  
Xu Chen ◽  
Jianwei Huang
Keyword(s):  
Information Exchange ◽  
Dynamic Spectrum Access ◽  
Access Network ◽  
Potential Game ◽  
Theoretic Approach ◽  
White Space ◽  
Spectrum Access ◽  
Game Theoretic ◽  
Space Spectrum ◽  
Self Organizing

Dynamic spectrum access is envisioned as a promising paradigm for addressing the spectrum under-utilization problem. According to the recent ruling of Federal Communications Commission (FCC) for white-space spectrum access, white-space devices are required to query a geo-location database to determine the spectrum availability. This chapter adopts a game theoretic approach for the self-organizing white-space spectrum access network design. This chapter first models the distributed channel selection problem among the devices as a distributed spectrum access game, and shows that the game is a potential game. This chapter then designs a self-organizing spectrum access algorithm which can achieve a Nash equilibrium of the game without any information exchange among the devices. Numerical results demonstrate that the proposed algorithm is efficient and can adapt to the dynamical network context changing.

scholarly journals On the issue of the transformation of the psychological portrait of the modern Russian youth in a socio-cultural context (the case of questioning target students’ groups in Don State Technical University)

2020 ◽  
Vol 175 ◽  
pp. 15032
Author(s):  
Tamara Olenich ◽  
Andrei Mekushkin ◽  
Natalia Mamchits ◽  
Natia Ugrekhelidze
Keyword(s):  
Personal Experience ◽  
Cultural Context ◽  
Communicative Competence ◽  
Place Of Residence ◽  
State Technical ◽  
Elite Education ◽  
The Status ◽  
The Subject ◽  
The University ◽  
To Receive

With the accordance to the formation of the psychological portrait of contemporary Russian youth in the sociocultural space, the author’s hypothesis is that in the modern conditions of sociocultural communicative competence, the sociocultural space becomes a necessary aspect in the development of the socialization of the Russian students. The object of the study is the Russian student youth, and the subject is an analysis of the nature of the influence of sociocultural communicative competence on the Russian youth socialization. Such social factors as: the influence of the place of residence on the level of student competence; the influence of place of residence on the level of claims; the influence of parental capital on the level of academic performance and level of professional claims; the effect of income on competence and the effect of income on professional claims, are necessary elements for students to achieve their goal, namely to receive an elite education, based on the base they have. The results showed that the higher education of the parents and the status of the university they graduated from creates a more favorable ground for the successful career of their children. Personal experience of parents determines the ability to choose the level of professional claims of students.

Self-Organized Formation of Various Invariant-Feature Filters in the Adaptive-Subspace SOM

1997 ◽  
Vol 9 (6) ◽  
pp. 1321-1344 ◽  
Author(s):  
Teuvo Kohonen ◽  
Samuel Kaski ◽  
Harri Lappalainen
Keyword(s):  
Network Architecture ◽  
Self Organizing Map ◽  
Restricted Class ◽  
Neural Network Architecture ◽  
Self Organized ◽  
Invariant Feature ◽  
Input Signals ◽  
Orderly Fashion ◽  
Feature Filters ◽  
Self Organizing

The adaptive-subspace self-organizing map (ASSOM) is a modular neural network architecture, the modules of which learn to identify input patterns subject to some simple transformations. The learning process is unsupervised, competitive, and related to that of the traditional SOM (self-organizing map). Each neural module becomes adaptively specific to some restricted class of transformations, and modules close to each other in the network become tuned to similar features in an orderly fashion. If different transformations exist in the input signals, different subsets of ASSOM units become tuned to these transformation classes.

Music Deposited by Stationers' Hall at the Library of the University and King's College of Aberdeen, 1753–96

1997 ◽  
Vol 30 ◽  
pp. 139-162 ◽  
Author(s):  
Richard Turbet
Keyword(s):  
Contemporary Literature ◽  
King's College ◽  
The Many ◽  
The University ◽  
To Receive

Under the provisions of the 1709 Copyright Act, Scottish universities were entitled to a copy of each printed work entered at Stationers' Hall, London. This entitlement ceased in 1836 when the five Scottish universities agreed to receive an annual payment in lieu of the privilege of deposit. Amongst the many difficulties thrown up by the well-intentioned legislation of 1709, a peculiarly Aberdonian aspect was that the Act specified only ‘the Four Univerisities in Scotland’ provoking arguments as to which of Aberdeen's two universities, King's College or Marischal College, should be the recipient. Although this was- resolved in favour of King's College, it is clear that friction persisted. As late as 1826 the Aberdeen Censor was urging, ‘I wish the members of Marischal College would look to what has become o’ the Stationers' Hall music'. This seems to be the only reference in contemporary literature to the collection.

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