235 research outputs found
The effects of Wnt5a and Wnt3a and PCP signaling on Schwann cell biology and myelination
No full textPlanar cell polarity (PCP) is known as the polarization of cells within the plane of the tissue layer. This form of polarization controls several epithelial and non-epithelial morphological processes, such as the orientation of primary cilia in the inner ear, convergent extension (CE) and directed migration. A three tiered model of PCP regulation has been proposed which consists of the global, core, and effector modules. However there is one addition level of modulation through non-canonical Wnt signaling pathway. Of the many Wnt proteins a few have been identified to signal primarily through this pathway. One such protein is Wnt5a, which has been shown to modulate PCP during directed cell migration. In this study we gather preliminary data for the presence of PCP signaling components in Schwann cells and investigate the effect of Wnt5a and its antagonist Wnt3a on Schwann cell proliferation, migration and myelination.M.S.Includes bibliographical referencesby Neha Jan
The effects of immediate versus delayed feedback after multiple-choice questions on subsequent exam performance
No full textThis thesis investigates the effects of immediate versus delayed feedback following multiple-choice questions on subsequent performance on multiple-choice and recall questions. In three experiments, students in a college psychology lecture course received immediate or delayed feedback following multiple-choice questions on an initial unit exam which was followed up with exam(s) including both multiple-choice and short-answer questions. In the first experiment, the kind of feedback did not affect performance on the same multiple-choice questions when they were repeated on the final. In the second experiment, two subsequent follow-up exams included first a short-answer version of the multiple-choice question and then the same multiple-choice question. Performance on the short-answer questions was better following delayed feedback than following immediate feedback. However, the kind of feedback had no effect on the performance of the repeated multiple-choice questions. Also, the interval between the initial exam and the follow-up exam had no effect on performance. The third experiment examined whether delayed feedback increased confidence more than immediate feedback and whether the increase in confidence mediated the improved performance on subsequent short-answer questions. The delayed feedback had no effect on confidence for the subsequent short-answer and multiple-choice responses. Together, these results demonstrate that delayed feedback improves performance on the short-answer questions by increasing the subsequent generation of the correct response but does not influence recognition of it.M.S.Includes bibliographical referencesIncludes vitaby Neha Sinh
Moral Panic, Social Exclusion and The Human Rights of Same-Sex Partners in Ghana-RETRACTED
Full text linkThis article is retracted :
The retraction is based on the request of the author, Dr. Neha Jain, as it contains some exclusive and private data of a community out of India, that should not be released online. https://doi.org/10.55938/ijgasr.v1i3.20
Sincerely,Editorial Team, IJGASR
Announcement: https://journals.icapsr.com/index.php/ijgasr/announcement/view/17
HYBRID BIOMETRIC AUTHENTICATION PROTOCOL DESIGN USING PROVERIF
No full textME, CSEDThe thesis presents verification of OAUTH and OAUTH2 . ProVerif is used as the verification tool for verifying and analysing the protocols. The protocol are analysed in ProVerif model. Various attacks to the protocols are generated in order to verify whether the protocols hold their intended properties.We have selected 2 protocols and proposed a Hybrid biometric authentication protocol for social login. Each of which has different intended purposes and properties. The first protocol is generic authentication highlighting the deficiencies.It suffers from a large count of vulnerabilities like CSRF attack,phishing attacks and so on. The second protocol is a new evolution of previous protocol with major changes in data flow and and security aspects.Though,it overcomes many of the vulnerabilities but still the security of data was questionable. Hence, third protocol was designed so that the intensional authentication property can be verified. The protocol promises three intended properties: privacy of the biometric data, liveness of biometric data used as a salt in token secret of MAC token used in OAUTH2 and intensional authentication. The protocol is illustrated in detail and desirable properties of the protocol are verified
Correction to: A cell-cycle signature classifier for pan-cancer analysis
No full textIn the original published version, the list of authors was incomplete. Theodora A. Constantin was missing, and Neha Tabassum and Theodora A. Constantin share first authorship. The correct author list is given above. The original article has been corrected. DOI to original article: https://doi.org/10.1038/s41388-020-01426-
On the Choice of an Appropriate Software Reliability Growth Model
No full textSoftware reliability is an active field of research over the past 35 years. Software developers often feel the necessity of selecting an appropriate software reliability model that not only best depicts the past history but also can predict reasonably well the future behavior of the software being developed in respect of detected bugs and errors. This helps in estimating in advance the time of delivery as well as the overall cost of the software project. Several models have been proposed in literature for estimating software reliability under different environments. However from amongst the models developed thus far, there is not a single model that best fits all or even a majority of the real life situations and so can be universally recommended. In this study, a technique is proposed to serve as a guide for the selection of an appropriate software reliability model for an ongoing software development project. The proposed technique has been tested on various sets of available software development project datasets and it has been observed that model recommended on the basis of proposed technique is better in comparison with models recommended on the basis of other models proposed
Less-institutionalized social structures: a theoretical, methodological, and empirical analysis of how networks and culture matter for emergence
No full textUsing a networks and culture lens, I investigate the micro-level processes underlying the production of order in social contexts or locations that are relationally-defined and meaningful, but lack cultural cues to action and interpretation or are in the early stages of acquiring such meaning. Drawing on neoinstitutionalist theory, I refer to such social structures as less-institutionalized. To explain order in the absence of situational cultural cues literature in social network analysis has traditionally attributed regularities to situational structural tendencies that preclude shared understandings and/or subjective engagement. Recent literature in the sociology of culture that revives overarching moral intuitions as a basis for action similarly rejects the explanatory value of situational cultural cues. Arguing that culture is neither irrelevant nor implicated in an overarching way in culturally less-institutionalized situations, I posit that order can be linked to individuals’ tacit and discursive use of cultural repertoires acquired over the life-course through involvements in multiple networks of interaction and domains of shared meanings or ‘netdoms.’ I analytically distinguish between three categories of less-institutionalized situations of the basis of the degree of uncertainty in interpretation and action they impose upon their occupants: high, intermediate, and absence/low. I demonstrate my argument using three examples of less-institutionalized situations/positions from distinct sociological fields: (1) rapid labor-force feminization in South Asia (high-uncertainty); (2) an emergent area of knowledge production (intermediate-uncertainty); and (3) falling average sibship-size implicated in worldwide fertility decline (low/absent uncertainty). Elaborating upon three cross-netdom mechanisms - analogizing, contrasting, and spillovers – and using a mixture of interpretive techniques, multilevel statistical models, and exponential random graph models, I show that occupants use cultural repertoires discursively in high-uncertainty less-institutionalized positions, tacitly in low-uncertainty situations, and in a combination of tacit and deliberative ways under conditions of intermediate uncertainty. I also develop a mathematical model to show how less-institutionalized practices/interpretations can come to be institutionalized over time through management of uncertainty within homophilous networks. Lastly, positing a duality between the cultural repertoires of individuals and those of social locations, I conclude with a discussion on how less-institutionalized positions offer a unique window into investigating processes of emergence and social change.Ph. D.Includes bibliographical referencesIncludes vitaby Neha Gonda
Technocentrism and social fields in the Indian EdTech movement: formation, reproduction and resistance
No full textAll over the globe, educational technology (EdTech) is being sold to schools as a central mechanism for improving access to quality learning for high poverty populations. There is a growing scholarship that interrogates the institutional drivers of the ‘EdTech craze’. Building on this work, this paper examines how technocentrism as a specific strain of neoliberalism is reflected at both the organizational and institutional levels, both by private and public sectors in the case of school education in India. We argue that using institutional theory to explain complex multi-layered reforms means looking in tandem at macro principles defined through interactions in the organizational field and the re-experiencing and transformation of those processes at the micro level
Educational Technology in India: The Field and Teacher’s Sensemaking
No full textThe educational technology (EdTech) is being viewed as one of the hopes for failing government schools in India. Huge investments are being made in EdTech by the market, philanthropies and the government, and several organisations are partnering in order to improve student learning outcomes and teachers’ instruction. This article is an attempt to understand this phenomenon from the vantage point of teachers’ work. We use the theoretical lens of the new institutionalism in organisational analysis for broadly mapping the EdTech field, as well as understanding how teachers make sense and purpose of EdTech in their classrooms. We argue that investigating the phenomenon in its macro form, while important in itself, significantly informs the study of individual EdTech implementations
Automated Brain Tumor Segmentation in MRI Images Using Deep Learning: Overview, Challenges and Future
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