1,633 research outputs found
Data privacy in knowledge discovery
No full textThis thesis addresses data privacy in various stages of extracting knowledge embedded in databases. Advances in computer networking and database technologies have enabled the collection and storage of vast quantities of data. Legal and ethical considerations might require measures to protect an individual's privacy in any use or release of the data. In this thesis, we address the problem of preserving privacy in the two following cases: (1) in distributed knowledge discovery; (2) in situations where the output of a data mining algorithm could itself breach privacy. We present results in two different models, namely secure multiparty computation (SMC) and differential privacy. The first part of the thesis presents privacy preserving protocols in the SMC model. Secure multiparty computation involves the collaborative computation of functions based on inputs from multiple parties. The privacy goal is to ensure that all parties receive only the final output without any party learning anything beyond what can be inferred from the output. Within this framework we address the problem of preserving privacy in the preprocessing and the data mining stages of knowledge discovery in databases. For the preprocessing stage, we present private protocols for the imputation of missing data in a dataset that is shared between two parties. For the data mining stage, we introduce the notion of arbitrarily partitioned data that generalizes both horizontally and vertically partitioned data. We present a privacy-preserving protocol for k-means clustering of arbitrarily partitioned data. We also develop a new simple k-clustering algorithm that was designed to be converted into a communication-efficient protocol for private clustering. The second part of the thesis deals with privacy in situations where the output of a data mining algorithm could itself breach privacy. In this setting, we present private inference control protocols in the SMC model for On-line Analytical Processing systems. In the differential privacymodel, the goal is to provide access to a statistical database while preserving the privacy of every individual in the database, irrespective of any auxiliary information that may be available to the database client. Under this privacy model, we present a practical privacy preserving decision tree classifier using random decision trees.Ph.D.Includes abstractVitaIncludes bibliographical referencesby Geetha Jagannatha
A dangerous but powerful idea - counter acceleration and speed with slowness and wholeness
No full textThe dangerous idea is that school reform, in India in particular, but across the world too, is impossible. Changing education, at the systemic level or at the institutional or school level, or educating teachers and school leaders in change can be classified as largely first order change - that of school improvement, which involves doing more of the same but doing it better (where the focus is on efficiency) and that of school re-structuring, which involves re-organising components and responsibilities (where the focus is on effectiveness). Geetha Narayanan is Principal Investigator with Project Vision at the Centre for Education Research Training and Development (CERTAD) within the Srishti School of Art Design and Technology in Bangalore, India. She has dedicated her career to finding and establishing new models of education that are creative, synergistic and original in their approach to learning. Read the article and listen to audio of the author discussing her ideas
Nicolas Clinchamps, Christel Cournil, Catherine Fabregoule, Geetha Ganapathy-Dore (sous la direction de), Sécurité et environnement, Bruylant, coll. «droit(s) et développement durable » , 2016, 431 pages. Avant-propos B. Badie. Conclusions É. Naim-Gesbert
No full textRadiguet Rémi. Nicolas Clinchamps, Christel Cournil, Catherine Fabregoule, Geetha Ganapathy-Dore (sous la direction de), Sécurité et environnement, Bruylant, coll. «droit(s) et développement durable » , 2016, 431 pages. Avant-propos B. Badie. Conclusions É. Naim-Gesbert. In: Revue Juridique de l'Environnement, n°1, 2017. pp. 191-192
FIGURE 1. Albunea groeningi Boyko, 2002 in A new distribution record of Albunea groeningi (Crustacea: Anomura: Decapoda: Albuneidae) from the Digha Coast, West Bengal, India
No full textFIGURE 1. Albunea groeningi Boyko, 2002, male CL 6.30 mm. A, dorsal view; B, ventral view; C, carapace and branchiostegite, dorsal view; D, abdominal somites I–VI, and telson of male, dorsal view; E, distal ocular peduncular segments with corneas; F, right pereopod I; G, right pereopod III; H, right pereopod II.Published as part of Yogesh Kumar, J. S., Boyko, Christopher B., Arun, G., Geetha, S. & Raghunathan, C., 2020, A new distribution record of Albunea groeningi (Crustacea: Anomura: Decapoda: Albuneidae) from the Digha Coast, West Bengal, India, pp. 588-592 in Zootaxa 4766 (4) on page 589, DOI: 10.11646/zootaxa.4766.4.5, http://zenodo.org/record/376576
Tetranchyroderma hystrix Remane 1926
No full textTetranchyroderma hystrix Remane, 1926 Records from India. KERALA: Neendakara—Rajan & Nair (1979). Habitat. It has been recorded in well sorted sand with grain size ranging mostly from 295 to 592 µm Remarks. This species has been recorded by Rajan & Nair (1979) from Kerala in their ecological work, along with other gastrotrichs species and meiofauna. There is no drawing and other taxonomic data of this species provided by them or any other author from India. Consequently, we consider this species finding as a doubtful record that require more evidence to prove the presence of this species on the Indian coast.Published as part of Chatterjee, Tapas, Priyalakshmi, Geetha & Todaro, M. Antonio, 2019, An annotated checklist of the macrodasyidan Gastrotricha from India, pp. 495-510 in Zootaxa 4545 (4) on page 503, DOI: 10.11646/zootaxa.4545.4.3, http://zenodo.org/record/261830
Letter of acknowledgement: “A part apart: the life and thought of B R Ambedkar” – “Bhimrao Ramji Ambedkar and the question of socialism in India” – “The evolution of pragmatism in India: an intellectual biography of B R Ambedkar”
No full textThe library is very grateful for this donation by Professor Dilip Menon. Personalised bookplates have been inserted in the books.I acknowledge with thanks and appreciation your donation of the following 3 books:
- “A part apart: the life and thought of B R Ambedkar” – Ashok Gopal (1 copy)
- “Bhimrao Ramji Ambedkar and the question of socialism in India” – V Geetha (1 copy)
- “The evolution of pragmatism in India: an intellectual biography of B R Ambedkar” – Scott R Stroud (1 copy)MM202
An IOT based solution for Road Accidents
No full textNowadays the vehicle accident rate has been increasing as compared to the previous decade. This system proposes a solution to minimize the action time after an accident. It has the capability of ensuring the driver's safety along with the co passengers and can easily be integrated with the car. The vehicle is connected to a hardware device that detects the collision with the help of a vibration sensor. The hardware device also consists of a fire sensor that senses fire breakouts. It communicates with an application in the Smartphone through Zigbee Bluetooth whenever collision or fire is sensed. If the driver doesn't want to communicate any information, he can cancel using the reset switch. Once the Bluetooth connection is established, the application would track and communicate the victim's GPS location along with the patient's entire medical report to their companions as well as the nearest hospital through an SMS. The application also checks the availability of the blood in the nearest blood bank and sends a notification back as soon as the availability of blood is ensured. A. Geetha | Shahanaz Khan N | Sneha Rajagopal | Soundariya B "An IOT based solution for Road Accidents" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-3 , April 2018, URL: https://www.ijtsrd.com/papers/ijtsrd11158.pd
Place in therapy of rituximab in the treatment of granulomatosis with polyangiitis and microscopic polyangiitis
No full textShivani Shah, Duvuru Geetha Department of Medicine, Division of Nephrology, Johns Hopkins University School of Medicine, Baltimore, MD, USA Abstract: Granulomatosis with polyangiitis and microscopic polyangiitis are small vessel vasculitides characterized by circulating antineutrophil circulating antibodies. Standard treatment for active severe disease has consisted of cyclophosphamide with glucocorticoids with or without plasmapheresis, which achieves approximately 75% sustained remission, but carries significant adverse effects such as malignancy, infertility, leukopenia, and infections. The role of B cells in the pathogenesis of anti-neutrophil circulating antibodies-associated vasculitis has been established, and as such, rituximab, a monoclonal anti-CD20 antibody, has been studied in treatment of active granulomatosis with polyangiitis and microscopic polyangiitis (induction) and in maintaining remission. Rituximab has been shown to be effective in inducing remission in several retrospective studies in patients with refractory disease or cyclophosphamide intolerance. The RAVE and RITUXVAS trials demonstrated rituximab is a noninferior alternative to standard cyclophosphamide-based therapy; however, its role in elderly patients and patients with severe renal disease warrants further investigation. Rituximab has been compared with azathioprine for maintaining remission in the MAINRITSAN trial and may be more efficacious in maintaining remission in patients treated with cyclophosphamide induction. Rituximab is not without risks and carries a similar adverse event risk rate as cyclophosphamide in randomized control trials. However, its use can be considered over cyclophosphamide in patients who have relapsing or refractory disease or in young patients seeking to preserve fertility. Keywords: rituximab, ANCA-associated vasculitis, GPA, MPA, induction therapy, maintenance therap
Private Actors and Education for the Poor in India
No full textConference Paper to be presented by Geetha Nambissan Geetha B. Nambissan is Professor of Sociology of Education at the Zakir Husain Centre for Educational Studies, Jawaharlal Nehru University, New Delhi. Her research focuses on exclusion, inclusion and the education of marginal groups, the middle classes and educational advantage and the social and educational implications of private schools for the poor. Over the last decade, transnational and local advocacy networks have been projecting th..
The role of the neuropeptide Y system on B cell development and function
No full textThe interactions between the nervous and immune systems have been explored over the last thirty years. Neuropeptide Y (NPY) and its receptors (Y1, Y2, Y4, Y5 and y6) have been closely studied in this area. NPY is a stress hormone expressed both in the nervous and immune systems. Furthermore, receptors such as Y1 are also expressed in immune tissue. Previous work from our lab using mice that lack Y1 (Y1-/-) has revealed that Y1-/- mice have significantly reduced mature B cell numbers in the periphery. Otherwise, very little is understood regarding the NPY system and B cells. Therefore, the purpose of this thesis was to investigate the role of the NPY system on B cell function and development. Initially, B cells were investigated in mice deficient in NPY (NPY-/-), PYY (a close relative of NPY) and mice deficient in both NPY and PYY (NPY-/-/PYY-/-). Profiling of B cell compartments showed some differences, where NPY-/- and NPY-/-/PYY-/- mice had a significantly reduced number of transitional type 2 B cells due to a decrease in CD23 expression. These mice also had impaired post-immune IgG3 production. However, these findings were later attributed to the genetic background of the mice, rather than the loss of NPY. B cells were then assessed in Y1-/- mice. Similar to previous findings, Y1-/- mice had reduced B cell numbers in peripheral lymphoid organs, however, the reason for this remains unclear. Analysis of B cells from mice lacking Y1 in B cells only and from mice in a reciprocal bone marrow chimera experiment could not conclusively show whether reduced B cell numbers were due to direct or indirect Y1 receptor signaling on B cells. When analysing Y1-/- B cell proliferation in vitro, a significantly higher response to stimulation via toll-like receptor (TLR) 9 was observed when compared to controls, indicating a role for the Y1 receptor in a TLR9 mediated response. Finally, an antibody reacting specifically to NPY was generated from a C57BL/6 mouse.
In conclusion, despite some experimental difficulties encountered, this thesis provides further evidence for neuro-immune crosstalk, with specific reference to B cells
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