A Heuristic Angular Clustering Framework for Secured Statistical Data Aggregation in Sensor Networks.

Clustering in wireless sensor networks plays a vital role in solving energy and scalability issues. Although multiple deployment structures and cluster shapes have been implemented, they sometimes fail to produce the expected outcomes owing to different geographical area shapes. This paper proposes a clustering algorithm with a complex deployment structure called radial-shaped clustering (RSC). The deployment structure is divided into multiple virtual concentric rings, and each ring is further divided into sectors called clusters. The node closest to the midpoint of each sector is selected as the cluster head. Each sector's data are aggregated and forwarded to the sink node through angular inclination routing. We experimented and compared the proposed RSC performance against that of the existing fan-shaped clustering algorithm. Experimental results reveal that RSC outperforms the existing algorithm in scalability and network lifetime for large-scale sensor deployments.

Admission experiences of psychiatric patients in tertiary care: An implication toward Mental Health Care Bill, 2013.

BACKGROUND: Coercion is not uncommon phenomenon among mental health service users during their admission into psychiatric hospital. Research on perceived coercion of psychiatric patients is limited from India. AIM: To investigate perceived coercion of psychiatric patients during admission into a tertiary care psychiatric hospital. MATERIALS AND METHODS: This was a cross-sectional descriptive survey carried out among randomly selected psychiatric patients (n = 205) at a tertiary care center. Data were collected through face-to-face interviews using structured questionnaire. RESULTS: Our findings revealed that participants experienced low levels of coercion during their admission process. However, a majority of the participants were threatened with commitment (71.7%) as well as they were sad (67.8%), unpleased (69.7%), confused (73.2%), and frightened (71.2%) with regard to hospitalization into a psychiatric hospital. In addition, the participants expressed higher levels of negative pressures (mean ± standard deviation, 3.76 ± 2.12). Participants those were admitted involuntarily (P > 0.001), diagnosed to be having psychotic disorders (P > 0.003), and unmarried (P > 0.04) perceived higher levels of coercion. CONCLUSION: The present study showed that more formal coercion was experienced by the patients those got admitted involuntarily. On the contrary, participants with voluntary admission encountered informal coercion (negative pressures). There is an urgent need to modify the Mental Health Care (MHC) Bill so that treatment of persons with mental illness is facilitated. Family member plays an important role in providing MHC; hence, they need to be empowered.