Purity based continuity bounds for quantum information measures

In quantum information theory, communication capacities are mostly given in terms of entropic formulas. Continuity of such entropic quantities are significant, as they lend themselves to maintain uniformity against perturbations of quantum states. Traditionally, continuity bounds have been provided in terms of the trace distance, which is a bonafide metric on the set of quantum states. In the present contribution we derive continuity bounds for various information measures based on the difference in purity of the concerned quantum states. In a finite-dimensional system, we establish continuity bounds for von Neumann entropy which depend only on purity distance and dimension of the system. We then obtain uniform continuity bounds for conditional von Neumann entropy in terms of purity distance which is free of the dimension of the conditioning subsystem. Furthermore, we derive the uniform continuity bounds for other entropic quantities like relative entropy distance, quantum mutual information and quantum conditional mutual information. As an application, we investigate the variation in squashed entanglement with respect to purity. We also obtain a bound to the quantum conditional mutual information of a quantum state which is arbitrarily close to a quantum Markov chain.Comment: We request suggestions and comment

Quantum conditional entropies and steerability of states with maximally mixed marginals

Quantum steering is an asymmetric correlation which occupies a place between entanglement and Bell nonlocality. In the paradigmatic scenario involving the protagonists Alice and Bob, the entangled state shared between them, is said to be steerable from Alice to Bob, if the steering assemblage on Bob's side do not admit a local hidden state (LHS) description. Quantum conditional entropies, on the other hand provide for another characterization of quantum correlations. Contrary to our common intuition conditional entropies for some entangled states can be negative, marking a significant departure from the classical realm. Quantum steering and quantum nonlocality in general, share an intricate relation with quantum conditional entropies. In the present contribution, we investigate this relationship. For a significant class, namely the two-qubit Weyl states we show that negativity of conditional R\'enyi 2-entropy and conditional Tsallis 2-entropy is a necessary and sufficient condition for the violation of a suitably chosen three settings steering inequality. With respect to the same inequality, we find an upper bound for the conditional R\'enyi 2-entropy, such that the general two-qubit state is steerable. Moving from a particular steering inequality to local hidden state descriptions, we show that some two-qubit Weyl states which admit a LHS model possess non-negative conditional R\'enyi 2-entropy. However, the same does not hold true for some non-Weyl states. Our study further investigates the relation between non-negativity of conditional entropy and LHS models in two-qudits for the isotropic and Werner states. There we find that whenever these states admit a LHS model, they possess a non-negative conditional R\'enyi 2-entropy. We then observe that the same holds true for a noisy variant of the two-qudit Werner state.Comment: 10 page

Characterization of Zinc oxide & Aluminum Ferrite and Simulation studies of M-H plots of Cobalt/Cobaltoxide

Zinc oxide and Aluminum Ferrite were prepared Chemical route. The samples were characterized by XRD and VSM. Simulation of M-H plots of Co/CoO thin films were performed. Effect of parameters was observed on saturation magnetization.Comment: Working paper (11 pages, 8 figures

Maternal Satisfaction Through Breastfeeding: An empirical study

A growing body of research indicates that both mothers and children benefit from breastfeeding. Reflecting such research, public health officials and organizations promote the practice of breastfeeding. Despite such research, advocacy, and gradually increasing breastfeeding rates over the past decade, a large fraction of mothers do not breastfeed for a shorter period than the recommended six months. We have identified maternal satisfaction (MS) as a predictor variable and six criterion variables namely maternal knowledge (MK), a socio-cultural attitude of mothers (SCI), mother-baby bonding (MBB), family tradition (FT), concerns for health and figure (CHF), and government initiatives (GI). Primary data were collected from hospitals, tabulated and processed to draw the inferences and relationships among the variables. Results show that there is weak maternal knowledge among the mothers, especially for the first baby delivery. Moreover, there are many concerns like family traditions, social and cultural attitudes, mothers concerns on health and physical figure, government initiatives with maternal satisfaction in our study. Keywords: Maternal satisfaction, breastfeeding DOI: 10.7176/JHMN/95-08 Publication date: November 30th 202

Design and development of values education index and perceptual mapping in Indian perspective

The present research works explore the constructs contributing to the values of education in the Indian educational framework and make an effort to understand its perception among the stakeholders. We have made a scientific effort to explore various dimensions of value education constructs from available literature and shaped those constructs on the perceptual mapping framework that have created its positions on the graphic dimension of the frame. It explains how the value education contributes to shaping the mindset and personality amongst the students. We have developed a value education index on the identified constructs that shows the relative weights on each identified construct. The constructs identified as family cohesion, parent conflicts, parents expatiation, teachers' role, school administration, mass media and internet, social orientation, community structure, religious education, and public institution. Key words: Value education, perceptual map, value education index, higher education DOI: 10.7176/JEP/11-33-20 Publication date: November 30th 202

Bronchial adenoma masquerading as pneumonia: a rare case report

A 29-year old non-smoker woman presented with breathlessness, cough with minimal expectoration and hemoptysis. Serial chest X-rays were suggestive of progressive collapse of right lung field. CECT chest revealed large endobronchial lesion in right main bronchus and obstructive collapse consolidation of right lower lobe and part of the middle lobe. Fiberoptic bronchoscopy revealed an endobronchial mass obstructing the right main bronchus. This reddish polypoid mass bleed on touch that was suggestive of bronchial adenoma and it was confirmed by histopathological examination. Patient was treated empirically with anti-tubercular drugs due to high prevalence of tuberculosis in our setting; however, the patient had clinical deterioration. Following the histopathology report, the diagnosis of bronchial adenoma was established. Bronchial adenoma should be considered in a young female patient presenting with hemoptysis and obstructive pneumonia