Performance Analysis of Adaptive MIMO OFDM System over Adaptive SISO OFDM System

The need of any communication system is high data speed with higher accuracy and reliability. Orthogonal Frequency Division Multiplexing (OFDM) provides optimistic solution for achieving high data rates in wireless environment. Orthogonal frequency division multiplexing (OFDM) is one of the multicarrier modulations, in which all of the sub channels are dedicated to a single data source In an OFDM transmission system, each subcarrier is attenuated individually under the frequency-selective and fast fading channel. If the same fixed transmission scheme is used for all OFDM subcarriers, it results in high attenuation and hence poor performance. Multiple input multiple output (MIMO) communication systems when integrated with the OFDM system can obtain high data rate transmission over broadband wireless channels. The purpose of this paper is to compare adaptive single input single output (ASISO) -OFDM with adaptive multiple input multiple output(AMIMO) -OFDM system and why MIMO is better than SISO is stated. Based on calculated average instantaneous signal to noise (SNR) same modulation scheme is applied to all subcarriers of same block. Average bit error rate (BER) performance of MIMO-OFDM system under fixed modulation and adaptive modulation is observed. The simulation results show that BER performance of MIMO-OFDM system using adaptive modulation is better than fixed modulation. DOI: 10.17762/ijritcc2321-8169.150518

Customer relationship management and innovative strategies in tourism industry

 Customer relationship management (CRM) is a mixture of individual, process and technology that tries to understand their company’s customers. Most of the tourism companies coordinated ways to deal with overseeing connections by focusing on customer maintenance and relationship improvement. CRM has developed from progresses in technology and hierarchical changes in customer driven processes. Tourism companies that effectively execute, customer relationship management will receive the benefits in customer loyalty and long run productivity or profitability. In any case, effective execution is most of the tourism company requires customer relationship management all inclusive, cross functional, customer focused business measure re- designing the framework. In spite of the facts CRM is a technology, customer relationship management is an only technology which helps the tourism industry in bringing solutions for the customers in order to satisfy their needs and wants. Dealing with an effective CRM execution requires a coordinated and adjusted way to deal with technology, process and individuals. The sample size of the study is 70 and tools which are used to find secondary data are frequency analysis, mean analysis, independent t test, ANOVA (one way), and regression analysis

A Study on Comparing the Performance of Low Cost RFID Authentication Protocols

Abstract ----Radio frequency identification (RFID) is a new technology that is used everywhere as RFID tags will be applied to every-day items in order to yield great productivity gains or "smart" applications for users. The use of RFID tags opens up the possibility for various attacks violating user privacy. This paper describes a complete analysis of various authentication protocols in three perspectives, namely data protection, tracking protection, and forward security

A Study to Assess the Effectiveness of Structured Teaching Programme on Knowledge Regarding Management of Low Birth Weight (LBW) Babies among Postnatal Mothers in Selected Community at Gwalior

Background: Low birth weight is one of the important causes for the high infant mortality rate in developing countries. In India during the year 1991, the IMR was 80 per 1000 live births & neonatal mortality rate (NMR) was 51 per 1000 live births.LBW babies have been reported to lag behind their heavier counterpart in development for the rest of their lives. Objective: The present study attempted to assess the effectiveness of structured teaching programme on knowledge regarding management of low birth weight (LBW) babies among postnatal mothers. Methods: In the present study, evaluative research approach was selected; one group pre-test and post-test design was adopted. The structured interview schedule on management of low birth weight (LBW) babies among postnatal Mothers was used to collect the data. The main study was conducted at Kedarpur and Barai rural community Gwalior, Madhya Pradesh, with the sample size of 40 postnatal mothers selected by using convenient sampling technique and the collected data were analyzed and interpreted based on descriptive and inferential statistics. Results: The overall mean score of the subjects in pre-test was 56.25% with standard deviation 2.80. In post-test, the mean percentage of the Overall means score of the subjects in post-test was 76.25% with standard deviation 2.28. The obtained ‘t’ value was greater than the table value and found to be highly significant at the level of p<0.005. The findings evidenced structured teaching programme was effective in increasing the knowledge of the postnatal mothers regarding management of low birth weight (LBW) babies. Conclusion: The study concluded that there was a significant improvement in the knowledge after structured teaching programme. Thus structured teaching programme is effective in improving the knowledge of the mothers

Web Application Shielding

In the olden days computer networks were used for sending emails so there was no issue of security but now a days people who are using internet as sharing tool are hacking the financial products like credit cards, debit cards by hacking the pin numbers and passwords and are misusing the accounts. There are several threats for the online applications such as hacking, intrusion and so on. Nowadays, application security is rapidly being recognized as a top priority. The systems store and retrieve knowledge and it'll shield the information from unauthorized users, disclosure, modification or destruction. Systems can make sure that the users have the authority to access the information, load new knowledge, or update existing knowledge. It is a very huge and complex task to provide security for a web application. So to avoid such problems a Web Application Shielding with the help of encryption techniques can be developed. This prevents hackers from exploiting vulnerabilities. This provides a higher level of security

PERLINDUNGAN DAN UPAYA HUKUM BAGI WHISTLEBLOWER DALAM PRAKTIK INSIDER TRADING DI INDONESIA SERTA PERBANDINGANNYA DENGAN AMERIKA SERIKAT

Insider trading constitutes a serious violation in the capital market that undermines the principles of transparency, fairness, and the integrity of financial transactions. Amid the challenges of law enforcement against this crime, the role of whistleblowers becomes crucial in disclosing information concealed from the public. This study aims to examine the legal protections and legal remedies available for whistleblowers in insider trading practices in Indonesia and to compare them with the legal framework in the United States. This research employs a normative juridical method with statutory, conceptual, and comparative approaches. In Indonesia, the protection of whistleblowers is still based on the Law on the Protection of Witnesses and Victims, which does not specifically regulate whistleblowers in capital market violations. This contrasts with the United States, which provides comprehensive protection through the Sarbanes-Oxley Act and the Dodd-Frank Act, offering not only legal safeguards against retaliation but also financial incentives. The findings indicate that Indonesia needs to reformulate its whistleblower protection policies within the capital market sector to strengthen oversight of insider trading and enhance investor confidence. This study recommends strengthening national regulations by adopting international best practices to create a capital market that is fairer, more transparent, and with greater integrity

Grid-Supportive Inverter Technologies for Power Quality Improvement

This paper offers a comprehensive review of grid-supportive inverter technologies aimed at enhancing power quality. One area of exploration presents a two-stage three-phase three-wire solar photovoltaic (SPV) system. This system utilises a boost converter for optimal power point tracking and a three-leg voltage source converter to channel the harnessed SPV energy. Distinctively, this approach provides harmonics elimination, grid current balancing, and compensation for the nonactive portion of load currents, going beyond traditional solar inverter functionalities. An innovative adjustable step adaptive neuron-based control method is employed to gauge the genuine power reflecting segment of the load current, ensuring swift dynamic adaptability to environmental shifts. Another focal point addresses the complexities introduced by the rising integration of microgrid systems within the AC distribution framework. Highlighting the imperative of maintaining voltage and frequency, the narrative accentuates the pivotal role of energy storage systems (ESS) for the proficient operation of sensitive loads. A grid adaptive power management strategy (GA-PMS) is proposed, orchestrating the current references for renewable energy sources, ESS, and microgridconnected converters. This strategy guarantees uninterrupted microgrid functionality, priority-driven load shedding, and the maintenance of power quality standards at the local bus. Both areas significantly contribute to the evolution of grid-supportive inverter technologies and their potential in power quality betterment