24 research outputs found
A new idea for broad band reflector and tunable multichannel filter of one dimensional symmetric photonic crystal with magnetized cold plasma defects
No full textDynamic systems for everyone: understanding how our world works
No full textThis book is a study of the interactions between different types of systems, their environment, and their subsystems. The author explains how basic systems principles are applied in engineered (mechanical, electromechanical, etc.) systems and then guides the reader to understand how the same principles can be applied to social, political, economic systems, as well as in everyday life. Readers from a variety of disciplines will benefit from the understanding of system behaviors and will be able to apply those principles in various contexts. The book includes many examples covering various types of systems. The treatment of the subject is non-mathematical, and the book considers some of the latest concepts in the systems discipline, such as agent-based systems, optimization, and discrete events and procedures. · Shows how system knowledge may be applied in many different areas without the need for deep mathematical knowledge; · Demonstrates how to model and simulate system behaviors on personal computers with readily available software packages; · Considers the various ways of optimizing system behavior; · Discusses the benefits of systems with highly distributed intelligence and the ways in which they may be modeled; · Considers how to incorporate discrete events and sequential steps in system dynamics; · Discusses the difference between holistic and reductionist world view.
Topological electronic structure of YbMg2Bi2 and CaMg2Bi2
No full textZintl compounds have been extensively studied for their outstanding thermoelectric properties, but their electronic structure remains largely unexplored. Here, we present a detailed investigation of the electronic structure of the isostructural thermopower materials YbMg2Bi2 and CaMg2Bi2 using angle-resolved photoemission spectroscopy (ARPES) and density functional theory (DFT). The ARPES results show a significantly smaller Fermi surface and Fermi velocity in CaMg2Bi2 than in YbMg2Bi2. Our ARPES results also reveal that in the case of YbMg2Bi2, Yb-4f states reside well below the Fermi level and likely have a negligible impact on transport properties. To properly model the position of 4f-states, as well as the overall electronic structure, a Hubbard U at the Yb sites and spin-orbit coupling (SOC) have to be included in the DFT calculations. The theoretical results reveal that both materials belong to a Z2 topological class and host topological surface states around EF. Due to the intrinsic hole doping, the topological states reside above the Fermi level, inaccessible by ARPES. Our results also suggest that in addition to SOC, vacancies and the resulting hole doping play an important role in the transport properties of these materials.This article is published as Kundu, Asish K., Tufan Roy, Santanu Pakhira, Ze-Bin Wu, Masahito Tsujikawa, Masafumi Shirai, D. C. Johnston, Abhay N. Pasupathy, and Tonica Valla. "Topological electronic structure of YbMg2Bi2 and CaMg2Bi2." npj Quantum Materials 7, no. 1 (2022): 67.
DOI: 10.1038/s41535-022-00474-2.
Copyright 2022 The Author(s).
Attribution 4.0 International (CC BY 4.0).
Posted with permission.
DOE Contract Number(s): AC02-07CH11358; SC0012704
Harvest: A Sustainable Growing Network
No full textabstract: A large section of United States citizens live far away from supermarkets and do not have an easy way to get to one. This portion of the population lives in an area called a food desert. Food deserts are geographic areas in which access to affordable, healthy food, such as fresh produce, is limited or completely nonexistent due to the absence of convenient grocery stores. Individuals living in food deserts are left to rely on convenience store snacks and fast food for their meals because they do not have access to a grocery store with fresh produce in their area. Unhealthy foods also lead to health issues, as people living in food deserts are typically at a higher risk of diet-related conditions, such as obesity, diabetes, and cardiovascular disease. Harvest, a sustainable farming network, is a smartphone application that teaches and guides people living in small spaces through the process of growing fresh, nutritious produce in their own homes. The app will guide users through the entire process of gardening, from seed to harvest. Harvest would give individuals living in food deserts an opportunity to access fresh produce that they currently can’t access. An overwhelming response based on our user discussion and market analysis revealed that our platform was in demand. Development of a target market, brand guide, and full lifecycle were beneficial during the second semester as Harvest moved forward. Through the development of a website, social media platform, and smartphone application, Harvest grew traction for our platform. Our social media accounts saw a 1700% growth rate, and this wider audience was able to provide helpful feedback. (abstract
Digital Transformation and the Self-Driving Car
No full textabstract: Digital transformation can be defined as, “the acceleration of business activities, processes, competencies, and models to fully leverage the changes and opportunities of digital technologies and their impact in a strategic and prioritized way,” (Edmead, Mark, and IDG Contributor Network, 2016). Following the industrial revolution, digital transformation has taken shape as the current revolution and innovative process. When industry’s and businesses engage in digital transformation, they create disruption and pave the way for enhanced customer value, efficient operational processes, and innovative business models. The prospect of this thesis is to: (1) understand how digital transformation strategy helps to propel innovation for the self-driving car, (2) understand how this innovation will create value in the grand schema for digital transformation, (3) develop a GIS-based (location analytics) study to understand the market opportunity for such technology and innovation. We outline how digital transformation as a whole represents a modern form of creative destruction, that is rewarding to businesses who engage in transformation for efficiency and innovation, and addresses the implications of those that do not. We discuss how digital transformation has affected the auto industry to invest in innovating self-driving cars. Finally, we perform location analytics to develop an opportunity analysis in five big markets around the Phoenix Metropolitan area in the State of Arizona to identify the potential markets for self-driving cars. We conclude this study with a discussion on how technology strategy is transforming the world
Author Correction: PND-Net: plant nutrition deficiency and disease classification using graph convolutional network
No full textA comparative study of Journal of documentation and Journal of knowledge Management during the period 2005-2015
No full textThis paper presents bibliometric profile of Journal of Documentation during the year 2005-2015, based on the year wise productivity, subfield wise article distribution, type of research documents published, geographical distribution of articles, Institutional wise productivity, citation distribution of articles degree of collaboration of authors. The study found that total 489 research documents published during the time period 2005-2015. Most number of articles published on the topic Information seeking behaviour. The study also revealed author productivity through the implementation of Lotka\u27s Law of productivity
BIBLIOMETRIC STUDY OF SELECTED LIS JOURNALS PUBLISHED ONLINE IN THE 21ST CENTURY
No full textThis paper is a study of the LIS journals published by Emerald group of publications which originated online in the 21st century upto the year 2015. Five such journals include Journal of Enterprise Information Management (JEIM), Journal of Intellectual Capital(JIC), Online Information Review (OIR), Performance Measurement and Metrics (PMM) and Journal of Information, Communication and Ethics in Society (JICES). Highest publication is by OIR and 2009 produced most articles followed by 2008. Research paper tops the list in all the five journals. Single authored papers are predominant followed by two authored papers. Authors from UK contribute maximum numbers of papers and most papers have been contributed from Brunel University, UK followed by University of Hawaii, USA. Authors repeat contributions to the same journal. No author among the top-ranking authors is found to be writing for any other journal among the five journals except Bar-Ilan J. In 2005 most citations are received in the three journals except OIR and JICES where articles published in 2009 received most citations. A six-authored paper in JEIM received most citations followed by a single authored paper in the JIC. The average article length mostly ranges from 16-20 pages in all the three journals except PMM and JICES where it ranges from 11-15 pages. 59 unique keywords appear in the journals and eight keywords are repetitive. Contributions by Indians are negligible. The journals are found to have varied aims and scope and accept articles of varied interest
PhilanthroGo: Changing the Way We Donate
No full textabstract: As part of the Founders’ lab program, this thesis explores a social venture idea whose concept is to connect the philanthropic community with individuals and organizations in need of funding a project relating to (Sustainable Development Goals) SDG indicators through a peer to peer donation platform. Through this platform, the philanthropic community will have the possibility to easily access a wide range of projects to support as well as underserved individuals and communities seeking for help, track their impact, donate in a complete transparent donation process, and automate donations through bank card rounds-up. This social venture idea has been named PhilanthroGo. (abstract
