45 research outputs found
Makespan reduction using dynamic job sequencing combined with buffer optimization applying genetic algorithm in a manufacturing system
No full textDevelopment of copper alloy by microwave hybrid heating technique and its characterization
No full textAuthor Correction Large spontaneous exchange bias in a weak ferromagnet Pb 6 Ni 9 (TeO 6 ) 5 (Scientific Reports, (2017), 7, 1, (8300), 10.1038/s41598-017-09056-w)
No full textIn the original version of this Article, Binoy Krishna Hazra and S. Srinath were incorrectly affiliated with ‘Department of Physics, Indian Institute of Technology Tirupati, TIRUPATI, 517506, India’. The correct affiliation is listed below School of Physics, University of Hyderabad, Hyderabad, 500046, India This error has now been corrected in the PDF and HTML versions of the Article, and in the accompanying Supplementary Information file. © 2019, The Author(s)
Experimental characterisation of large scale structures in a high Reynolds number turbulent boundary layer
No full textA very large field of view (4δ x 1δ) with a good spatial resolution owing to the use of four 2k x 2k pixel cameras was conducted in a flat plate boundary layer at two Reynolds numbers (Reθ ≈7,500 and 20,000). Comparing the flow statistics with previously obtained hot-wire data under similar flow conditions show good agreement. The goal of this experiment is to detect and characterise the large scale motions which develop in the log region of a high Reynolds number turbulent boundary layer
Many Worlds on a Frame: Characterizing Online Social Cognition
No full textAbstract :
The theme of the Web Observatory at IIIT Bangalore is "online social cognition." Our research aims to understand how social media activity molds collective worldview that in turn impacts several areas of human activity, like business, politics or even social harmony. We first categorize the web into three broad regions or realms: called the social, trigger, and inert realms respectively. The social realm forms the participatory areas of the web, where opinions are actively exchanged and molded. Trigger realm refers to elements like news websites or blogs, whose publishing events often trigger activity in the social realm. The inert realm refers to static web content, that gets used as a source of latent knowledge in the social interactions.
The social realm itself is modeled as a "marketplace of opinions" -- where different vested interests invest their opinions in order to fetch returns. Opinions that are "compatible" come together to form one or more narratives. In order to characterize this, we first represent an opinion as comprising of two dimensions called: abstraction and expression. Abstraction refers to the opinion-holder's objective perspective on the issue, and expression refers to the communication of the opinion-holder's subjective sentiment about the issue. Cognitive science studies show that abstractions and expressions have vastly different characteristics in they way they diffuse through a population. Hence, the formation of narratives are sometimes catalyzed by abstractions, and sometimes by expressions.
In order to represent narratives and their interplay, that constitutes social cognition, we also propose a hermeneutic framework called "Many Worlds on a Frame" (MWF). The framework models the semantic universe of discourse, as comprising of several semantic "worlds" or "narratives" within each of which , other worlds may participate as entities. Interactions between worlds are either facilitated or hampered by their respective worldviews. The set of all interactions between worlds is called the Frame.
We argue that the "many worlds" representation is more conducive to modeling social cognition, rather than (say) a convergent multi-author knowledge model like a wiki. The MWF implementation does not impose an overarching ontology, at the same time, it is not completely unstructured either. We propose to use a modified form of the NQuad W3C standard for representing knowledge about online social cognition.
About the Speaker :
Srinath Srinivasa heads the Web Science lab and is the Dean (R&D) at IIIT Bangalore, India. Srinath holds a Ph.D (magna cum laude) from the Berlin Brandenburg Graduate School for Distributed Information Systems (GkVI) Germany, an M.S. (by Research) from IIT-Madras and B.E. in Computer Science and Engineering from The National Institute of Engineering (NIE) Mysore. He works in the area of Web Science, understanding the impact of the web on humanity. Technology for educational outreach and social empowerment has been a primary motivation driving his research. He has participated in several initiatives for technology enhanced education including the VTU Edusat program, The National Programme for Technology Enhanced Learning (NPTEL) and an educational outreach program in collaboration with Upgrad. He is a member of various technical and organizational committees for international conferences like International Conference on Weblogs and Social Media (ICWSM), ACM Hypertext, COMAD/CoDS, ODBASE, etc. He is also a life member of the Computer Society of India (CSI). As part of academic community outreach, Srinath has served on the Board of Studies of Goa University and as a member of the Academic Council of the National Institute of Engineering, Mysore. He has served as a technical reviewer for various journals like the VLDB journal, IEEE Transactions on Knowledge and Data Engineering, and IEEE Transactions on Cloud Computing. He is also the recipient of various national and international grants for his research activities
User-Level Communication in Cluster-Based Servers
No full textClusters of commodity computers are currently being used to provide the scalability required by several popular Internet services. In this paper we evaluate an efficient cluster-based WWW server, as a function of the characteristics of the intra-cluster communication architecture. More specifically, we evaluate the impact of processor overhead,network bandwidth, remote memory writes, and zero-copy data transfers on the performance of our server. Our experimental results with an 8-node cluster and four real WWW traces show that network bandwidth affects the performance of our server by only 6%. In contrast, user-level communication can improve performance by as much as 29%. Low processor overhead, remote memory writes, and zero-copy all make small contributions towards this overall gain. To be able to extrapolate from our experimental results, we use an analytical model to assess the performance of our server under different workload characteristics, different numbers of cluster nodes, and higher performance systems. Our modeling results show that higher gains (of up to 55%) can be accrued for workloads with large working sets and next-generation servers running on large clusters.Technical report DCS-TR-45
Entrepreneurship and the Entrepreneur: A Synthesis View
No full textThis small note on defining entrepreneurship is produced due to the apparent pursue of stereotyped knowledge among students in general. The author postulates to be an accountant or a finance manager should not be the prime concerns of students. There are other emerging areas as well. for an instant, Business Technology, Entrepreneurship, Value Based Marketing, Green Accounting, Personal Management etc. Given the unimportance of stereotyped knowledge, the author intends to define Entrepreneurship concisely to convince the students about the value of such a field. With some scholarly definitions on entrepreneurship, the author writes what entrepreneurship is and who is an entrepreneur. Most notably, in the definition of entrepreneur, the author adds the notion of Intrapreneurship allowing students to think out of the box
Laboratory Design Concepts for Effective Utilization of Resources and Obtaining Greater Efficacy
No full textLaboratories are workplaces for the conduct of experimentation across disciplines and perform interdisciplinary scientific research. This work will summarize the key architectural, engineering, and operational, safety, and sustainability considerations for the design Laboratories.
The author recognizes that in the 21st century we are pushing project design teams to create research laboratories that are responsive to current and future needs, that encourage interaction among students as well as researchers from various disciplines, that help recruit and retain qualified scientists, and that facilitates partnerships and development.</jats:p
Reproducing a deep learning algorithm - when unstoppable expectations meet immovable reality
No full textInvestigating changes in forest cover has been an area of intense research for decades. From manual surveys to remote sensing we have come a long way in mapping the world around us. Machine learning and its' younger sibling, deep learning, have emerged as highly useful tools on this journey. There are a wide variety of algorithms that take a stab at analysing vegetation coverage, but not all of them are easily accessible to the community at large. This was the underlying incentive for the paper you are about to read - reproducing and replicating a novel deep-learning algorithm that generates maps of forest cover in a relatively under-explored part of the world. This study lays out the methodology devised by the original authors as well as our attempts to replicate their work on a different set of data. We present the results we were able to obtain, the hurdles we encountered along the way, and a set of guidelines we feel would be helpful for future researchers.Computer Science | Software Technolog
Arctic shipping: Commercial viability of the arctic sea routes
No full textClimate change and dwindling energy resources are the driving factors behind the research being performed in the Arctic region. The climate change is being caused by an increase in the greenhouse gases and this has disturbed the natural balance. These greenhouse gases are causing the rapid retreat of the ice in the Arctic region. This spells both bad news and good news. The bad news is of course obvious that the retreating ice can cause drastic changes to the local habitats and also the world. The good news is that the retreating sea ice, has given hope of shipping in the Arctic region. It has also given the opportunity to explore the vast resources buried deep in the Arctic region.CoMEM - Coastal and Marine Engineering ManagementHydraulic EngineeringCivil Engineering and Geoscience
