scholarly journals A trusted approach for prediction of data link failure and intrusion detection in wireless sensor networks

2021 ◽  
Author(s):  
Putty Srivi ◽  
Lavadya Nirmala Devi ◽  
Nageswar Rao A
Keyword(s):  
Shortest Path ◽  
Network Connectivity ◽  
Link Failure ◽  
Data Link ◽  
Network Growth ◽  
Method Performance ◽  
Time Period ◽  
Probability Evaluation ◽  
Reservation Protocol ◽  
Set Up

Abstract Typically, wireless senor network (WSN) is widely used in the various fields for several applications. It is a promising technology due to its higher range of the network connectivity and the fast set up of the network. But there will also be a presence of the some of the eradicating issues which will decrease the network growth. In the WSNfield the prediction of link failure is regarded as the baffling one till now. The proposed technique offers a detailed idea on the failure of link. The proficient trusted Node ID dependent resource reservation protocol (PTN-RRP) is presented in this approach. In this, the shortest path is then recognized with the use of approach weighted based end-to-end delay. This technique identifies the shortest path from a specific preliminary position to the target and thus could enhance the detectionrate. By means of recognizing shortest path, the hop address and sequence numeral is being incorporated to the protocol. Once afterwards the shortest pathdetection, the failure of link is estimated. A link failure structure in the trusted etiquetteemployed has the developedcapabilityto predict and fix issues related to link failure. After that, to identify the attack cause intended for the failureof link, a method of posterior probability evaluation is carried out to find the kind of attack. Finally, the proposed method performance isassessedover simulation study. The simulation outcomeauthorizes that the projectedmethod is effective highly in the link breakage detectionand the implemented algorithm for shortest path recognition in this will decreases the detecting shortest path time period. The performance outcome is compared with existing techniques to prove the effectiveness of proposed methodology.

scholarly journals A Trusted Method For Early Data Link Failure Prediction

2020 ◽  
Vol 8 (5) ◽  
pp. 2498-2504
Keyword(s):  
Shortest Path ◽  
Ad Hoc ◽  
Mobile Ad Hoc Network ◽  
Simulation Analysis ◽  
Failure Prediction ◽  
Link Failure ◽  
Time Duration ◽  
Network Time ◽  
Reservation Protocol ◽  
Secure Network

Mobile ad-hoc network was widely used in the various fields for several applications. In the field of the wireless sensor network the link failure prediction is still a baffling one. The proposal here provides clear facts about the concepts of the link failure. In this paper the Proficient Trusted Node ID Based Resource Reservation Protocol (PT-NIDBRRP) was used. Here the shortest path was detected by using the weighted end-to-end delay based approach. This algorithm will find the short cut route from the particular starting place to the target and can improve the detection rate. By starting the route detection process the sequence numeral and the hop address is added to the protocol. After detecting the shortest path the link failure was detected. The link failure localization structure in the implemented trusted protocol has the higher ability in predicting and fixing the link failure issues. Then to find out the cause attack for the link failure the posterior probability estimation was used to sort out the type of the attack. At last the performance of the proposed method was evaluated through simulation analysis. The simulation result confirms that the proposed methodology is highly effective in detecting the link breakage and the short path algorithm implemented here will reduces the time period of detecting the shortest path. This method provides trusted secure network time duration, energy values and trust scores play an important role between the source and destination in the network.

scholarly journals Condensation/immersion mode ice-nucleating particles in a boreal environment

2020 ◽  
Vol 20 (11) ◽  
pp. 6687-6706
Author(s):  
Mikhail Paramonov ◽  
Saskia Drossaart van Dusseldorp ◽  
Ellen Gute ◽  
Jonathan P. D. Abbatt ◽  
Paavo Heikkilä ◽  
...  
Keyword(s):  
Field Campaign ◽  
Particle Species ◽  
Entire Field ◽  
Time Period ◽  
Regional Sources ◽  
Range Transport ◽  
Thermodynamic Conditions ◽  
Set Up ◽  
Boreal Environment ◽  
Measurement Location

Abstract. Ice-nucleating particle (INP) measurements were performed in the boreal environment of southern Finland at the Station for Measuring Ecosystem–Atmosphere Relations (SMEAR II) in the winter–spring of 2018. Measurements with the Portable Ice Nucleation Chamber (PINC) were conducted at 242 K and 105 % relative humidity with respect to water. The median INP number concentration [INP] during a 6-week measurement period was 13 L−1. The [INP] spanned 3 orders of magnitude and showed a general increase from mid-February until early April. No single dominant local or regional sources of INPs in the boreal environment of southern Finland could be identified. Rather, it is hypothesised that the INPs detected at SMEAR II are a result of long-range transport and dilution of INPs sourced far from the measurement site. Despite high variability, the measured [INP] values fall within the range expected for the [INP] measured elsewhere under similar thermodynamic conditions. The [INP] did not correlate with any of the examined parameters during the entire field campaign, indicating that no one single parameter can be used to predict the [INP] at the measurement location during the examined time period. The absence of a correlation across the entire field campaign also suggests that a variety of particles act as INPs at different times, although it was indirectly determined that ambient INPs are most likely within the size range of 0.1–0.5 µm in diameter on average. On shorter timescales, several particle species correlated well with the [INP]. Depending on the meteorological conditions, black carbon (BC), supermicron biological particles and sub-0.1 µm particles, most likely nanoscale biological fragments such as ice-nucleating macromolecules (INMs), correlated with the INP signal. However, an increase in the concentration of any of these particle species may not necessarily lead to the increase in the [INP]; the reasons for this remain unknown. Limitations of the instrumental set-up and the necessity for future field INP studies are addressed.

scholarly journals A Study of Indian Derivatives Market and its Current Position in Global Financial Derivatives Market

2021 ◽  
Vol 4 (1) ◽  
pp. 1-6
Author(s):  
S Sandra
Keyword(s):  
Commodity Prices ◽  
Financial Derivatives ◽  
Business Community ◽  
Price Risk ◽  
Current Position ◽  
Futures Trading ◽  
Time Period ◽  
The Status ◽  
Set Up ◽  
Derivative Market

Derivatives emerged as hedging instruments out of the need to control price risk. Earlier commodity prices were the sole concern of business community, and therefore, the derivatives on commodities were the first ones to emerge. The introduction of derivatives in India can be traced out in 1875, when the Bombay Cotton Trading Association Ltd was set up for futures trading in cotton. At present the markets for derivatives have been growing at a phenomenal pace. This paper traces the growth and current position of Indian derivatives market. Since its inception in June 2000, derivatives market has exhibited exponential growth both in terms of volume and number of contract traded. The market turnover has grown from Rs.24bn in 2000-01 to Rs. 2376tn in 2018-19. The present study is an effort to demonstrate the growth and expansion of derivatives in India during the time period 2010-11 to 2018-19. It also encompasses the scope, history, concept, types and growth of financial derivatives in India and the status of Indian derivatives market vis-à-vis global derivative market.

scholarly journals Gamma spectrometry technique for the determination of residence time in Submarine Groundwater Discharges

2019 ◽  
Vol 18 ◽  
pp. 155
Author(s):  
G. Eleftheriou ◽  
C. Tsabaris ◽  
D. L. Patiris ◽  
E. Androulakaki ◽  
M. Kokkoris ◽  
...  
Keyword(s):  
Residence Time ◽  
Water Samples ◽  
Gamma Ray ◽  
Measuring System ◽  
Gamma Ray Spectrometry ◽  
Reference Source ◽  
Radium Isotopes ◽  
Time Period ◽  
Submarine Groundwater ◽  
Set Up

The evaluation of time period that meteoric water remains in the ground (residence time) before exiting in the open sea can be a valuable information for the submarine groundwater discharges (SGD) in the costal zones. Coastal waters contain elevated dissolved activities of radium isotopes compared to the open ocean, where excess activities are zero. Lately it has been shown by Moore et al., that residence time can be estimated by a model based on radium radioisotopes ratio reduction throughout the coast. However the standard methods for the estimation of radium isotopes concentration in the water are sophisticated, time consuming or require big amount of sample. Hereby, a method based on the direct gamma ray spectrometry of untreated water samples from coastal areas is applied to determine the residence time of the SGD. Efficiency calibration of the spectrometry set up has been performed for two different volumetric sample geometries, using 152Eu/154Eu solution as reference source. In order to ensure the reliability of the method, the background courting rate magnitude and variance through time have been defined for the radioisotopes of interest. Additionally, the minimum detectible activity (MDA) of the measuring system was determined, in Becquerel per cubic meter, as a function of energy in water samples. The developed method was applied and validated for water samples from the submarine spring in Stoupa Bay, southwestern Peloponnesus. The defined residence time varies from 3 to 6 days, being in good agreement with the results of the standard geological pigment-tracer method.

scholarly journals Existence and Exploitability of Financial Analysts' Informational Leadership

2016 ◽  
Vol 5 (2) ◽  
Author(s):  
Rainer Baule ◽  
Hannes Wilke
Keyword(s):  
Abnormal Returns ◽  
Relevant Information ◽  
Trading Strategies ◽  
Information Share ◽  
Time Period ◽  
The Us ◽  
Information Shares ◽  
Set Up ◽  
The One

This paper bridges two recent studies on the role of analysts to provide new and relevant information to investors. On the one hand, the contribution of analysts to long-term price discovery on the US market is rather low. Considering earnings per share forecasts as the main output of analysts’ reports, their information share amounts to only 4.6% on average. On the other hand, trading strategies set up on these EPS forecasts are quite profitable. Self-financing portfolios yield excess returns of more than 5% over the S&P 100 index for a time period of 36 years, which is persistent after controlling for the well-known risk factors. In this paper, we discuss the link between the low information shares and the high abnormal returns. We argue that information shares of analysts cannot be higher, because otherwise their forecasts would lead to excessively profitable trading strategies which are very unlikely to persist over such a long period of time.

scholarly journals The use of co-digested solid fraction as feedstock for biogas plants

2014 ◽  
Vol 44 (4) ◽  
pp. 153
Author(s):  
Elio Dinuccio ◽  
Fabrizio Gioelli ◽  
Dalibor Cuk ◽  
Luca Rollè ◽  
Paolo Balsari
Keyword(s):  
Solid Fraction ◽  
Farmyard Manure ◽  
Pig Slurry ◽  
Time Period ◽  
Study Results ◽  
Biogas Plants ◽  
Mechanical Separation ◽  
Set Up ◽  
Sorghum Silage

A comparative study was set up in order to assess the technical feasibility of the long-term reuse of the mechanically separated co-digested solid fraction as a feedstock for anaerobic digestion plants (ADP). The biogas yields of two feedstock mixtures (A and B) were assessed in mesophilic conditions (40°C±2°C) using 6 lab-scale continuous stirredtank reactors. Feedstock mixture A (control) consisted of pig slurry (70%), farmyard manure (4%), sorghum silage (12%) and maize silage (14%). Feedstock mixture B was the same as the control plus the solid fraction derived from the mechanical separation of the output raw codigestate collected from the reactors. All reactors were fed simultaneously, three times a week, over a period of nine month. According to the study results, the reuse of the co-digested solid fraction as feedstock for ADP could increase the methane yield by approximately 4%. However, ADP efficiency evaluation (<em>e.g.</em>, daily yield of methane per m<sup>3</sup> of digester) suggests limiting this practice to a maximum time period of 120 days.

scholarly journals Chloride in Milk, Milk Powder, Whey Powder, Infant Formula, and Adult Nutritionals Potentiometric Titration: Collaborative Study, Final Action 2016.03

2019 ◽  
Vol 102 (2) ◽  
pp. 564-569
Author(s):  
Greg Jaudzems ◽  
Fengxia Zhang ◽  
Wu Bolong ◽  
Lei Bao ◽  
Jing Xiao
Keyword(s):  
Infant Formula ◽  
Collaborative Study ◽  
Milk Powder ◽  
Method Performance ◽  
Expert Review ◽  
Performance Requirements ◽  
Expert Review Panel ◽  
Repeatability And Reproducibility ◽  
Set Up ◽  
Single Laboratory

Abstract Background: In September 2015, both AOAC Official Methods 2015.07and 2015.08 single-laboratory validations (SLVs) were reviewed against Standard Method Performance Requirements® (SMPR) 2014.015by the AOAC Stakeholder Panel for Infant Formula andAdult Nutritional (SPIFAN) Expert Review Panel (ERP). Looking at the similarity and uniqueness of the two methods, the authors agreed, as advised by the ERP, to work together to merge the two methods intoone. This combined method was assigned Method 2016.03. Objective: In order to determine the repeatability and reproducibility of the AOAC First Action 2016.03 method, a collaborative study was organized. The study was divided in two parts: (Part 1) method set up and qualification of participants and (Part 2) collaborative study participation. During Part 1, each laboratory was asked to analyze two practice samples. The laboratories that provided results within a range of expected levels were qualified for Part 2, during which they analyzed 25 samples in blind duplicates. Results: The results were compared with SMPR 2014.015 established for chloride. The precision results (repeatability and reproducibility) were within therequirements stated in the SMPR. In general, the precision results (repeatability and reproducibility)were well within the limits stated in the SMPR. Repeatability ranged from 0.4 to 1.9%, in accordance with data obtained during SLV, with reported RSD of repeatability from 0.03 to 1.6%. Meanwhile, reproducibility ranged from 0.6 to 4.0%. Finally, the Horwitz ratio values were all below 1, from 0.2 to 0.9%. Conclusions: The ERP determined that the data presented met the SMPR and accordingly recommended the method to be granted Final Actionstatus. In January 2018, the Official Methods Boardapproved the method as Final Action.

The Research of Virtualization Emulator Based on Open Shortest Path First

2013 ◽  
Vol 411-414 ◽  
pp. 729-732
Author(s):  
An Hong Tian ◽  
Cheng Biao Fu
Keyword(s):  
Shortest Path ◽  
Teaching And Learning ◽  
Computer Network ◽  
Real Life ◽  
Network Connectivity ◽  
Professional Students ◽  
Simulation Tools ◽  
Network Equipment ◽  
Packet Tracer ◽  
Computer Professional

Computer network is one of the compulsory course for computer professional students, but students are boring for abstract network concepts, in order to improve the innovation of students, a virtual simulation tools named Packet Tracer is introduced into the classroom teaching, which can provide network simulation environment as real life with enough network equipment. This paper presents the configuration example of Open Shortest Path Firs Protocol, and proves the network connectivity simulation results, this is an efficient method for teaching and learning by visual emulator.

scholarly journals Improving VANETs Connectivity with a Totally Ad Hoc Living Mobile Backbone

2015 ◽  
Vol 2015 ◽  
pp. 1-14 ◽  
Author(s):  
Joilson Alves Junior ◽  
Emilio C. G. Wille
Keyword(s):  
Intelligent Transportation Systems ◽  
Ad Hoc Network ◽  
Ad Hoc ◽  
Network Connectivity ◽  
Real Data ◽  
Transportation Systems ◽  
Network Backbone ◽  
Set Up ◽  
Fully Connected ◽  
Analytic Models

The vehicular ad hoc network (VANET) for intelligent transportation systems is an emerging concept to improve transportation security, reliability, and management. The network behavior can be totally different in topological aspects because of the mobility of vehicular nodes. The topology can be fully connected when the flow of vehicles is high and may have low connectivity or be invalid when the flow of vehicles is low or unbalanced. In big cities, the metropolitan buses that travel on exclusive lanes may be used to set up a metropolitan vehicular data network (backbone), raising the connectivity among the vehicles. Therefore, this paper proposes the implementation of a living mobile backbone, totally ad hoc (MOB-NET), which will provide infrastructure and raise the network connectivity. In order to show the viability of MOB-NET, statistical analyses were made with real data of express buses that travel through exclusive lanes, besides evaluations through simulations and analytic models. The statistic, analytic, and simulation results prove that the buses that travel through exclusive lanes can be used to build a communication network totally ad hoc and provide connectivity in more than 99% of the time, besides raising the delivery rate up to 95%.

Medical Preparedness Against Chemical and Biological Incidents for the NATO Summit in Istanbul and Lessons Learned

2006 ◽  
Vol 21 (4) ◽  
pp. 268-271 ◽  
Author(s):  
Levent Kenar ◽  
Turan Karayilanoglu Pharm
Keyword(s):  
Lessons Learned ◽  
Extensive Experience ◽  
Counter Measures ◽  
Research Activities ◽  
Detection And Identification ◽  
Multidisciplinary Cooperation ◽  
Time Period ◽  
Set Up ◽  
Heads Of State ◽  
Medical Planning

AbstractIntroduction:During the 2004 North Atlantic Treaty Organization (NATO) Summit, essential counter-measures, including medical preparedness, were taken to cope with any suspected terrorist case or events including the use of chemical or biological (CB) weapons.The Summit was held in Istanbul, a city that bridges two continents, and involved the participation of many Heads of State, Prime Ministers, and Defense Ministers from 26 NATO countries.Methods:First responders, including medical Chemical, Biological, Radiological, and Nuclear (CBRN) teams, received special training. Essential equipment, including drugs, antidotes, detectors, etc., was provided and stockpiled. Medical authorities augmented the capacity for identifying and con- trolling the injuries and any emerging CB incident through the set-up of decontamination units and the procurement of medical devices, antidotes, drugs, and personal protective suits. Additionally, a small part of the recently established NATO-CBRN battalion was welcomed to the Summit and was prepared to perform detection and identification of the agent found in suspicious appearing samples.Results:Although no CB incident was reported during the Summit, extensive experience was gained with respect to medical preparedness against CB terrorism. Sampling, detection, and analysis of toxic materials were taken into account in the medical management. Much laboratory-related work was conducted in the following time period. The laboratory work involved the stan-dardization of sampling and transportation procedures, development of both mobile and reference laboratories, and performing research activities aimed to make the CB analysis more efficient.Although the training of the medical staff was advanced, training should be continuous and supported with educational programs, conferences, meetings, and tabletop and hospital medical exercises throughout the country.Conclusion:Multidisciplinary cooperation, training, and preparedness should be provided to basic medical care units and centers as part of the medical planning aimed at perfect detection and surveillance, laboratory analysis, and emergency response.

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