Secure malicious node detection in flying ad-hoc networks using enhanced AODV algorithm.

In wireless networking, the security of flying ad hoc networks (FANETs) is a major issue, and the use of drones is growing every day. A distributed network is created by a drone network in which nodes can enter and exit the network at any time. Because malicious nodes generate bogus identifiers, FANET is unstable. In this research study, we proposed a threat detection method for detecting malicious nodes in the network. The proposed method is found to be most effective compared to other methods. Malicious nodes fill the network with false information, thereby reducing network performance. The secure ad hoc on-demand distance vector (AODV) that has been suggested algorithm is used for detecting and isolating a malicious node in FANET. In addition, because temporary flying nodes are vulnerable to attacks, trust models based on direct or indirect reliability similar to trusted neighbors have been incorporated to overcome the vulnerability of malicious/selfish harassment. A node belonging to the malicious node class is disconnected from the network and is not used to forward or forward another message. The FANET security performance is measured by throughput, packet loss and routing overhead with the conventional algorithms of AODV (TAODV) and reliable AODV secure AODV power consumption decreased by 16.5%, efficiency increased by 7.4%, and packet delivery rate decreased by 9.1% when compared to the second ranking method. Reduced packet losses and routing expenses by 9.4%. In general, the results demonstrate that, in terms of energy consumption, throughput, delivered packet rate, the number of lost packets, and routing overhead, the proposed secure AODV algorithm performs better than the most recent, cutting-edge algorithms.

Improved energy efficiency using adaptive ant colony distributed intelligent based clustering in wireless sensor networks.

Optimization algorithms have come a long way in the last several decades, with the goal of reducing energy consumption and minimizing interference with primary users during data transmission over shorter distances. The adaptive ant colony distributed intelligent based clustering algorithm (AACDIC) is a key component of the cognitive radio (CR) system because of its superior performance in spectrum sensing among a group of multi-users in terms of reduced sensing errors, power conservation, and faster convergence times. This study presents the AACDIC method, which improves energy efficiency by determining the ideal cluster count using connectedness and distributed cluster-based sensing. In this study, we take into account the reality of a system with an unpredictable number of both primary users and secondary users. As a result, the proposed AACDIC method outperforms pre-existing optimization algorithms by increasing the rate at which solutions converge via the utilisation of multi-user clustered communication. Experiments show that compared to other algorithms, the AACDIC method significantly reduces node power usage by 9.646 percent. The average power of Secondary Users nodes is reduced by 24.23 percent compared to earlier versions. The AACDIC algorithm is particularly strong at reducing the Signal-to-Noise Ratio to levels as low as 2 dB, which significantly increases the likelihood of detection. When comparing AACDIC to other primary detection optimization strategies, it is clear that it has the lowest false positive rate. The proposed AACDIC algorithm optimizes network capacity performance, as shown by the results of simulations, due to its ability to solve multimodal optimization challenges. Our analysis reveals that variations in SNR significantly affect the probability of successful detection, shedding light on the intricate interplay between signal strength, noise levels, and the overall reliability of sensor data. This insight contributes to a more comprehensive understanding of the proposed scheme's performance in realistic deployment scenarios, where environmental conditions may vary dynamically. The experimental results demonstrate the effectiveness of the proposed algorithm in mitigating the identified drawback and highlight the importance of SNR considerations in optimizing detection reliability in energy-constrained WSNs.

Central registry in psychiatry: A structured review.

BACKGROUND: Central registry in psychiatry is being practiced in few countries and has been found useful in research and clinical management. Role of central registry has also expanded over the years. MATERIALS AND METHODS: All accessible internet database Medline, Scopus, Embase were accessed from 1990 till date. Available data were systematically reviewed in structured manner and analyzed. RESULTS: Central registry was found useful in epidemiological analysis, association studies, outcome studies, comorbidity studies, forensic issue, effective of medication, qualitative analysis etc.. CONCLUSION: Central registry proves to be effective tool in quantitative and qualitative understanding of psychiatry practice. Findings of studies from central registry can be useful in modifying best practice and evidence based treatment in psychiatry.

Munchausen syndrome: Playing sick or sick player.

Munchausen syndrome is rare factitious disorder which entails frequent hospitalization, pathological lying and intentional production of symptoms for sick role. Management requires collateral history taking, sound clinical approach, exclusion of organicity and addressing psychological issues. A case which presented with unusual symptoms of similar dimension is discussed here. The case brings out finer nuances in evaluation and management of this entity.

Cross sectional assessment of empathy among undergraduates from a medical college.

BACKGROUND: Empathy is essentially a desirable quality among clinicians and can be developed during medical education. Studies from outside India have shown that higher empathy is related to better competency and choice of specialty may be related to empathy levels in them. Change in empathy levels among undergraduate medical students with progressive training has been often ascribed to reasons such as curriculum content, timing of clinical rotations. Gender differences in empathy levels also vary among different countries. Since many of such factors differ in India there is a need therefore to understand empathy and its correlates among medical students in India. METHOD: A cross sectional study was undertaken in a large medical college among the undergraduates of first, third, fifth, seventh and ninth semesters to measure their empathy levels. The evaluation was done using the Jefferson's Scale for Physician's Empathy- Student version. RESULTS: The study revealed highest empathy at entry level and a significant fall by seventh semester (p = 0.002). Female students had significantly higher empathy levels than male students (p = 0.012) across all semesters. The variance in empathy scores according specialty chosen is not statistically significant (p = 0.2468). CONCLUSION: The progressive decline in empathy levels with years in medical college here is seen much later than in western studies. Female students are more empathetic than male students. The relation of mean empathy scores and choice of specialty is inconclusive and at variance from other studies.

A cross-sectional study of factors associated with adolescent sexual activity.

CONTEXT: Adolescents constitute about 20% of our population and increasingly more of them are initiating sexual activity at an early age. Several behaviors associated with adolescence like masturbation, expression of masculinity/femininity, lifestyle habits like attending late night parties, and consumption of alcohol have been variously implicated in initiating sexual activities. Sexual abuse can also lead to premature sexualization. In view of few worthwhile studies from India that have dealt with these issues this study was undertaken. AIMS: To elicit information from two co-education schools adolescent boys and girls on matters related to pubescence, sexual experiences, and sexual health. SETTINGS AND DESIGN: Study subjects involved students from class IX to XII in two co-education schools. Consent of parents was taken to administer the questionnaire to their wards. MATERIALS AND METHODS: A total of 586 out of 1580 students completed a self-reporting questionnaire on matters related to sexuality. Statistical Analysis EpiInfo6 Software was used. RESULTS: Significant association was found among those holding the view that having sex proves their masculinity, being sexually abused, masturbation among boys, and sexual activity. A significantly large number of boys and girls are unaware of role of alcohol on sexual activity and that pregnancy can be caused by single intercourse. CONCLUSIONS: This was probably the first such comparative study from India. Mechanisms need to be evaluated to help adolescents understand their sexual attitudes and situations that are likely to provoke sexual activity. Therefore, not only more detailed and longitudinal studies are needed to understand these relations in a better perspective, but also a well-planned educational program for adolescents is a need of the hour.

Optogenetics in psychiatry: The light ahead.

Complexities of the human mind have been beyond the scope of understanding because a intricate neuronal network and difficulty in specific localization and assessment of area responsible for a specific behavior; more so in a freely moving living being. Optogenetics off late has been able to address this issue to great extent and holds promises for future. Relevant literatures in this direction were looked into and the salient aspects of this science is being discussed here with specific relevance to psychiatry.

Delusional parasitosis: Worms of the mind.

Delusional parasitosis is an uncommon psychotic illness. Patients often report to dermatologists and physicians for treatment and are brought to psychiatric attention only for associated psychological distress. One such case is discussed in this report.

Cognitive reserve: The warehouse within.

Dementia is characterized by progressive and mostly irreversible memory loss. Other neuropsychiatric disorders affect cognition in varying manner. Are all people affected with such disorders manifest clinically in similar manner or does our brain have some reserve to tolerate insults? Relevant researches over the last two decades were scrutinized to understand brain reserve, appreciate the conceptual change in the same over years, and how the same can be improved for better cognition and memory over the year. Literature evidence suggests that the cognitive reserve (CR) is a dynamic and functional concept. There is adequate evidence to suggest that enriched environment and various other measures are likely to improve CR across all age. Improving CR may delay or reverse the effects of aging or brain pathology.

Emotional intelligence scale for medical students.

BACKGROUND: Emotional Intelligence has been associated with positive outcome process in varied professions. There is paucity of Indian literature on the subject; especially involving medical undergraduates; and presently there is no scale available to measure the same in the Indian scenario. OBJECTIVE: To develop a scale to measure Emotional Intelligence among medical undergraduates. MATERIALS AND METHODS: Four domains of Emotional intelligence were selected, viz. Self-Awareness, Self-Management, Social-Awareness & Social-Skills and these were included for the purpose of domains of the scale. On the basis of focused group discussions and in-depth deliberations with experts, undergraduate and postgraduate medical students a pool of 50 items was generated. The items were reduced to 27 based on expert consensus and on the basis of frequency of endorsement by expert reviews. It was followed by a pilot study of 50 undergraduates. This completed the preparation of the preliminary draft based on content analysis. The questionnaire was then administered in 480 students and the data was analyzed by appropriate statistical methods. For the purpose of concurrent validity, emotional intelligence scale developed by Dr. Ekta was used. RESULTS: The Cronbach's Alpha for Internal Consistency Reliability was 0.68. The EIS had a significant correlation with social awareness domain of Emotional Intelligence Test (EIT) establishing Concurrent Validity. CONCLUSION: Emotional Intelligence Scale for medical undergraduates was constructed. Reliability and concurrent validity were also established for the same.

Tobacco-alcohol amblyopia: A rare complication of prolonged alcohol abuse.

Tobacco-alcohol amblyopia is rare, however, extremely disabling complication seen in patient with alcohol dependence syndrome, which if not addressed properly and at the right time may lead to persisting deficits. We here report a patient of alcohol-dependence syndrome who presented with significant diminution of vision bilaterally in the background of excess alcohol consumption.

Neuropsychophysiological correlates of depression.

The neuropsychiatric and cognitive deficits have been shown to exist in various psychiatric disorders. An attempt has been made by authors to evaluate the evidence pertaining to electrophysiological, structural and neuropsychological domains in depression. Renewal of interest in testing patients with depression on a broad range of neuropsychological tasks has revealed distinct pattern of cognitive impairment in cases with depression. The review focuses on structural and neuropsychological evidence of deficit in cases of depression.

Does androgyny have psychoprotective attributes? A cross-sectional community-based study.

BACKGROUND: In our society, adherence to feminine traits by the female gender had been culturally promoted and socially desired. A few studies, however, entertained the possibility that healthy men and women have some common attributes in their gender orientation. Androgyny and masculinity were found related to positive mental health. MATERIALS AND METHODS: A cross-sectional study was conducted to assess the level of masculinity and femininity and its relationship with the perception of stress and various psychopathology including anxiety and depression. RESULTS: Masculinity scores of the participants negatively correlated while femininity scores positively correlated with the scores on General Health Questionnaire, Beck's Depressive Inventory, Beck's Anxiety Inventory, and Perceived Stress Scale. CONCLUSION: Androgyny is psychoprotective. Empowerment-oriented psychological approaches aimed to encourage psychological androgyny, and masculinity might be therapeutic.