Secure State Estimation: Optimal Guarantees against Sensor Attacks in the Presence of Noise

Motivated by the need to secure cyber-physical systems against attacks, we consider the problem of estimating the state of a noisy linear dynamical system when a subset of sensors is arbitrarily corrupted by an adversary. We propose a secure state estimation algorithm and derive (optimal) bounds on the achievable state estimation error. In addition, as a result of independent interest, we give a coding theoretic interpretation for prior work on secure state estimation against sensor attacks in a noiseless dynamical system.Comment: A shorter version of this work will appear in the proceedings of ISIT 201

Application-based COVID-19 micro-mobility solution for safe and smart navigation in pandemics

Short distance travel and commute being inevitable, safe route planning in pandemics for micro-mobility, i.e., cycling and walking, is extremely important for the safety of oneself and others. Hence, we propose an application-based solution using COVID-19 occurrence data and a multi-criteria route planning technique for cyclists and pedestrians. This study aims at objectively determining the routes based on various criteria on COVID-19 safety of a given route while keeping the user away from potential COVID-19 transmission spots. The vulnerable spots include places such as a hospital or medical zones, contained residential areas, and roads with a high connectivity and influx of people. The proposed algorithm returns a multi-criteria route modeled on COVID-19-modified parameters of micro-mobility and betweenness centrality considering COVID-19 avoidance as well as the shortest available safe route for user ease and shortened time of outside environment exposure. We verified our routing algorithm in a part of Delhi, India, by visualizing containment zones and medical establishments. The results with COVID-19 data analysis and route planning suggest a safer route in the context of the coronavirus outbreak as compared to normal navigation and on average route extension is within 8%–12%. Moreover, for further advancement and post-COVID-19 era, we discuss the need for adding open data policy and the spatial system architecture for data usage, as a part of a pandemic strategy. The study contributes new micro-mobility parameters adapted for COVID-19 and policy guidelines based on aggregated contact tracing data analysis maintaining privacy, security, and anonymity

Quality of Life Assessment of Hypertensive Patients in a Tertiary Care Teaching Hospital in Jaipur

Background: Hypertension is the well-known risk factor for mortality and morbidity. About 7.1 million population worldwide dies each year due to cause of hypertension. It directly effects persons quality of life.  Methods: Total number of 128 Hypertension diagnosed Patient’s data were collected under this study who were admitted to the General Medicine wards of tertiary care teaching hospital. WHO BREF questionnaires were given and filled forms by patients were collected. Result: In physical health 42 Patients are with excellent health, 81 Patients are fall under the moderate health and 5 Patients are with poor physical health status. In psychological assessment 36 Patients are with excellent health 83 Patients are fall under the moderate health and 9 Patients are with poor physical health status. In Social relation, 15 Patients are with excellent health, 98 Patients are fall under the moderate health, and 15 Patients are with poor physical health status. In environmental assessment, 57 Patients are with excellent health, 41 Patients are fall under the moderate health and 31 Patients are with poor physical health status. Conclusion: This study has shown overall moderate QOL with mean 3.25 and SD 0.63 among hypertensive patients according all four domains. Physical activities and marital status were important independent factors affecting both domains in QOL. Older age was associated with lower QOL in physical health. Presence of co-morbidity in hypertension patients are an important health issue influencing their satisfaction in physical health. Interventions targeted towards improving QOL of disadvantage patients are needed in the setting. Keywords- Mental Health Assessment, WHO BREF, Quality of Life, Hypertension