A wireless sensor network is type of network.Basically it consist a collection tiny device are called node, node has resource constraint means battery power, storage and communication capability.These nodes set with radio interface which they communicated one another to form network.Wireless very necessary application like remote environmental monitoring target tracking.The goal our survey present comprehensive review the recent literature on various aspects WSNs.And also discuss how works...

A wireless sensor network is a resource constraint network, in which all nodes have limited resources.In order to save resources and energy, data must be aggregated, avoid amounts of traffic the network.The aim aggregation that eliminates redundant transmission enhances life time energy network.Data process has done with help effective clustering scheme .inthis paper we gives new related for called "Efficient cluster head selection network" (ECHSSDA), also compare our propose LEACH...

Cognitive radio networks allow opportunistic spectrum access to the unlicensed users, which rely on effective sensing. Recently, cooperative sensing has been found improve reliability. However, sometimes selfish users do not cooperate, and therefore, different incentive design mechanisms like contract theory have proposed recently, where cooperation is encouraged by offering appropriate reward participants. still no secure structure exists for distribution after a successful completion, user...

We study the performance of IEEE 802.11 protocol.We present an extension a methodology for collocated one-hop case which allows incorporation channel errors.The results closely agree with simulation results.A delay analysis is also presented.We this to multi-hop non-collocated nodes.The approach uses specific topology dependent relations.Specific are presented ring and mesh topologies, compared against results.1. Introduction.Wireless networking technologies increasingly becoming...

Objective: To compare ratings of quality life in patients with established schizophrenia Chandigarh, India, both subjective and objective view points between patients' relatives' ratings. Method: Subjective was assessed 38 using the Quality Life Interview – Brief Version WHO Bref scale. Key family members were also interviewed same scales. Results: are moderately well correlated ( r =0.43) similar agreement found relatives =0.46). Conclusion: Although is characteristically measured subjects,...

One of the major breakthroughs in wireless communication technology is represented by Visible Light Communication (VLC) standardised at ISO level within IEEE 802.15.7 Due to its advantages i.e., high transmission rates, security and immunity from electro magnetic interference as opposed relatively microwave counterparts crucial for QoS assessment example video streaming application. Nonetheless, hidden node problem poses a serious challenge Medium Access Control (MAC) layer these networks...

This study addresses the issues concerning design of adverse condition warning systems (ACWS). ACWS are designed to sense road and weather conditions as well system states that can negatively impact driving performance leading skids or accidents, alert drivers these conditions. In this case, an was when a car likely skid. A virtual-driving environment used test two levels alarm sensitivity (low high) types auditory signal (Binary ON/OFF Graded) along with no-alarm control group. Dependent...

Our objective was to identify the frequency and types of various pediatric death certification errors. All available certificates (n = 1424, from January December 2005 July 2007) were retrieved medical record library in a tertiary hospital. These analyzed retrospectively (66%) prospectively (34%) for year 2007, respectively. Only 11% filled accurately. In remaining 89%, total number errors ranged 0-5 per certificate. The most common major minor "improper sequencing" (50.3%) "absence time...

The coronavirus (COVID-19) pandemic is one of the biggest challenges in field healthcare. Nanomedicine a developing area that has potential to treat various diseases and control infections. Now, its applications are open for treatment COVID-19. We have studied relevant papers through Scopus, Google Scholar, Science Direct ResearchGate on nanomedicine context This paper provides detailed information about It further identifies primary faced current situation. study details advancements...

Erectile dysfunction (ED) is seen in a large number of male patients with diabetes mellitus (DM). However, little known about the impact ED on quality life (QoL) DM patients. To study QoL men type 2 (T2DM) and compare same for without 63 were compared 30 matched (on sociodemographic clinical profile, rating depression anxiety) measures using WHO-QoL-Bref. Patients had poorer all domains (except physical domain); however, differences between two groups significant only environmental domain....

There has been an asymmetric shift toward harnessing cloud-based technologies as the world focuses on shifting operations remotely. Data security for remote is crucial protection and preservation of critical infrastructure. Furthermore, there emerging trend to integrate IoT-based devices with expanding cloud In this work, mobile infrastructure considered where contact opportunities are developed in opportunistic manner so facilitate efficient data forwarding secure process handling. A...

In cognitive radio networks, the identification of a primary user (PU) with help spectrum sensing is very important for secondary (SU), such that interference free transmission can be performed. recent times, cooperative improves reliability decisions made about presence PU and overcoming hidden terminal problem by obtaining results from different sensors gaining much attention. However, selfish SUs are sometimes not willing to cooperate. This paper proposes contract theory-based approach,...

The well known multiple letter encryption cipher is the Playfair cipher. Here digrams in plaintext are treated as single units and converted into corresponding text digrams. However because of drawbacks inherent 5*5 which adversely affects security we proposed an 8*8 then coupled it with LFSR (Linear Feedback Shift Register) to make traditional at par advanced ciphers available like AES DES. For details one can refer to. Now for all practical applications, performance speed also prime...

Summary With the advent of various emerging wireless products, usage limited spectrum has grown exponentially in recent years. In next few years, that mobile data traffic globally is expected to grow up 50 EB/month, which nearly a five times increase over year 2018. Therefore, it will become extremely difficult satisfy ever increasing demand through current fixed assignment policy band exclusively used for particular applications, and also led underutilization significant portion (like TV...