135,887 research outputs found
Toward Entity-Aware Search
As the Web has evolved into a data-rich repository, with the standard "page view," current search engines are becoming increasingly inadequate for a wide range of query tasks. While we often search for various data "entities" (e.g., phone number, paper PDF, date), today's engines only take us indirectly to pages. In my Ph.D. study, we focus on a novel type of Web search that is aware of data entities inside pages, a significant departure from traditional document retrieval. We study the various essential aspects of supporting entity-aware Web search. To begin with, we tackle the core challenge of ranking entities, by distilling its underlying conceptual model Impression Model and developing a probabilistic ranking framework, EntityRank, that is able to seamlessly integrate both local and global information in ranking. We also report a prototype system built to show the initial promise of the proposal. Then, we aim at distilling and abstracting the essential computation requirements of entity search. From the dual views of reasoning--entity as input and entity as output, we propose a dual-inversion framework, with two indexing and partition schemes, towards efficient and scalable query processing. Further, to recognize more entity instances, we study the problem of entity synonym discovery through mining query log data. The results we obtained so far have shown clear promise of entity-aware search, in its usefulness, effectiveness, efficiency and scalability
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Crime reduction through design: insights from ecodesign
The recognition for humankind to act in more sustainable ways has evolved new theory and practice within design. This new type of design is commonly described as ecodesign. This paper describes the different approaches to ecodesign and places them within a framework illustrating a broad range of initiatives. Approaches to crime are explored in relation to the ecodesign framework and conceptual links are made between these two fields of study. To ascertain how such initiatives may inform design and development in decreasing the number of crime and disorder events, an overview of ecodesign policies, tools and drivers is presented, and the transferability of these discussed
Requirements for the conceptual design of advanced underground coal extraction systems
Conceptual design requirements are presented for underground coal mining systems having substantially improved performance in the areas of production cost and miner safety. Mandatory performance levels are also set for miner health, environmental impact, and coal recovery. In addition to mandatory design goals and constraints, a number of desirable system characteristics are identified which must be assessed in terms of their impact on production cost and their compatibility with other system elements. Although developed for the flat lying, moderately thick seams of Central Appalachia, these requirements are designed to be easily adaptable to other coals
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Educational Technology Topic Guide
This guide aims to contribute to what we know about the relationship between educational technology (edtech) and educational outcomes by addressing the following overarching question: What is the evidence that the use of edtech, by teachers or students, impacts teaching and learning practices, or learning outcomes? It also offers recommendations to support advisors to strengthen the design, implementation and evaluation of programmes that use edtech.
We define edtech as the use of digital or electronic technologies and materials to support teaching and learning. Recognising that technology alone does not enhance learning, evaluations must also consider how programmes are designed and implemented, how teachers are supported, how communities are developed and how outcomes are measured (see http://tel.ac.uk/about-3/, 2014).
Effective edtech programmes are characterised by:
a clear and specific curriculum focus
the use of relevant curriculum materials
a focus on teacher development and pedagogy
evaluation mechanisms that go beyond outputs.
These findings come from a wide range of technology use including:
interactive radio instruction (IRI)
classroom audio or video resources accessed via teachers’ mobile phones
student tablets and eReaders
computer-assisted learning (CAL) to supplement classroom teaching.
However, there are also examples of large-scale investment in edtech – particularly computers for student use – that produce limited educational outcomes. We need to know more about:
how to support teachers to develop appropriate, relevant practices using edtech
how such practices are enacted in schools, and what factors contribute to or mitigate against
successful outcomes.
Recommendations:
1. Edtech programmes should focus on enabling educational change, not delivering technology. In doing so, programmes should provide adequate support for teachers and aim to capture changes in teaching practice and learning outcomes in evaluation.
2. Advisors should support proposals that further develop successful practices or that address gaps in evidence and understanding.
3. Advisors should discourage proposals that have an emphasis on technology over education, weak programmatic support or poor evaluation.
4. In design and evaluation, value-for-money metrics and cost-effectiveness analyses should be carried out
Standardization Framework for Sustainability from Circular Economy 4.0
The circular economy (CE) is widely known as a way to implement and achieve sustainability, mainly due to its contribution towards the separation of biological and technical nutrients under cyclic industrial metabolism. The incorporation of the principles of the CE in the links of the value chain of the various sectors of the economy strives to ensure circularity, safety, and efficiency. The framework proposed is aligned with the goals of the 2030 Agenda for Sustainable Development regarding the orientation towards the mitigation and regeneration of the metabolic rift by considering a double perspective. Firstly, it strives to conceptualize the CE as a paradigm of sustainability. Its principles are established, and its techniques and tools are organized into two frameworks oriented towards causes (cradle to cradle) and effects (life cycle assessment), and these are structured under the three pillars of sustainability, for their projection within the proposed framework. Secondly, a framework is established to facilitate the implementation of the CE with the use of standards, which constitute the requirements, tools, and indicators to control each life cycle phase, and of key enabling technologies (KETs) that add circular value 4.0 to the socio-ecological transition
Community professionals' management of client care : a mixed-methods systematic review
This is the final draft, after peer-review, of a manuscript published in Journal of Health Services Research & Policy. The definitive version, detailed above, is available online at www.rsmjournals.com.Peer reviewedPostprin
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