Secure Key Management Policies in Strand Spaces

2021 ◽  
pp. 175-197
Author(s):  
Riccardo Focardi ◽  
Flaminia L. Luccio
Author(s):  
Yugashree Bhadane ◽  
Pooja Kadam

Now days, wireless technology is one of the center of attention for users and researchers. Wireless network is a network having large number of sensor nodes and hence called as “Wireless Sensor Network (WSN)”. WSN monitors and senses the environment of targeted area. The sensor nodes in WSN transmit data to the base station depending on the application. These sensor nodes communicate with each other and routing is selected on the basis of routing protocols which are application specific. Based on network structure, routing protocols in WSN can be divided into two categories: flat routing, hierarchical or cluster based routing, location based routing. Out of these, hierarchical or cluster based routing is becoming an active branch of routing technology in WSN. To allow base station to receive unaltered or original data, routing protocol should be energy-efficient and secure. To fulfill this, Hierarchical or Cluster base routing protocol for WSN is the most energy-efficient among other routing protocols. Hence, in this paper, we present a survey on different hierarchical clustered routing techniques for WSN. We also present the key management schemes to provide security in WSN. Further we study and compare secure hierarchical routing protocols based on various criteria.


Author(s):  
Vairaprakash Gurusamy ◽  
◽  
S. Kannan ◽  
T. Maria Mahajan ◽  
◽  
...  

2020 ◽  
Vol 16 (5) ◽  
pp. 905-919
Author(s):  
R.O. Voskanyan

Subject. The article addresses leader companies of the e-commerce market in terms of sales and capitalization, that make their financial statements publicly available. Objectives. The aim is to identify special aspects of capital structure management policies of the largest e-commerce players based on ratio analysis. Methods. The study employs general scientific methods of research. Results. The paper reveals the specifics of capital structure management of the global e-commerce market leaders. The leading companies prefer an aggressive approach to the formation of their capital structure, increasing the volume of borrowed capital in comparison with their equity. The management of companies tries to provide a moderate approach to capital structure management and debt servicing, demonstrating the ability to repay debts in a timely manner. Aggressive capital structure policy is conditioned by specific activities of e-commerce companies, requiring constant search for and attraction of additional financial resources for improving production processes by management. Conclusions. Key players have an aggressive capital structure policy. This feature is necessitated by the need to systematically attract additional financing to expand the business, increase sales volumes, capture and create new markets. E-commerce companies have to constantly improve technology, logistics processes, and render a good and excellent customer service.


2013 ◽  
Vol 2 (2) ◽  
pp. 23-31
Author(s):  
Sufyan T. Faraj Al-janabi ◽  
Ali J. Dawood ◽  
Ekram H. Hassan

2019 ◽  
pp. 79-95
Author(s):  
N.E. Terentiev

Based on the latest data, paper investigates the dynamics of global climate change and its impact on economic growth in the long-term. The notion of climate risk is considered. The main directions of climate risk management policies are analyzed aimed, first, at reducing anthropogenic greenhouse gas emissions through technological innovation and structural economic shifts; secondly, at adaptation of population, territories and economic complexes to the irreparable effects of climate change. The problem of taking into account the phenomenon of climate change in the state economic policy is put in the context of the most urgent tasks of intensification of long-term socio-economic development and parrying strategic challenges to the development of Russia.


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