16 Result(s)

Article

Synthesis and characterization of semiconducting sinnerite (Cu₆As₄S₉) thin films

Sinnerite (Cu₆As₄S₉) is a semiconductor computed to have attractive optoelectronic properties, but little attention has been paid to its experimental synthesis and characterization. Here, the authors report the f...

Scott A. McClary, Rakesh Agrawal in MRS Communications (2020)

Article

Reaction pathways and optoelectronic characterization of single-phase Ag₂ZnSnS₄ nanoparticles

Sputtered thin films of Ag₂ZnSnS₄ (AZTS) have shown promising semiconducting properties in spite of the films containing SnS₂, SnS_x, or ZnS as impurity phases. In this study, reaction pathways were identified to ...

**anyi Hu, Susannah Pritchett-Montavon, Carol Handwerker… in Journal of Materials Research (2019)

Article

Sustainable co-production of food and solar power to relax land-use constraints

Renewable energy could often be land constrained by the diffuse nature of renewable resources. To relax land constraints, we propose the concept of ‘aglectric’ farming, where agricultural land will be sustaina...

Caleb K. Miskin, Yiru Li, Allison Perna, Ryan G. Ellis… in Nature Sustainability (2019)

Article

Inkjet printed Cu(In,Ga)S₂ nanoparticles for low-cost solar cells

Cu(In,Ga)Se₂ (CIGSe) thin film solar cells were fabricated by direct inkjet printing of Cu(In,Ga)S₂ (CIGS) nanoparticles followed by rapid thermal annealing under selenium vapor. Inkjet printing is a low-cost, lo...

Jérémy Barbé, Jessica Eid, Erik Ahlswede… in Journal of Nanoparticle Research (2016)

Article

An in situ phosphorus source for the synthesis of Cu₃P and the subsequent conversion to Cu₃PS₄ nanoparticle clusters

The search for alternative earth abundant semiconducting nanocrystals for sustainable energy applications has brought forth the need for nanoscale syntheses beyond bulk synthesis routes. Of particular interest...

Erik J. Sheets, Wei-Chang Yang, Robert B. Balow… in Journal of Materials Research (2015)

Article

Vanishing splenial lesion presenting as alexia with dysgraphia

Rajendra Singh Jain, Sunil Kumar, Madhuparna Paul, Rakesh Agrawal in Journal of Neurology (2015)

Article

Economic analysis of novel synergistic biofuel (H₂Bioil) processes

Fast-pyrolysis based processes can be built on small-scale and have higher process carbon and energy efficiency as compared to other options. H₂Bioil is a novel process based on biomass fast-hydropyrolysis and su...

Navneet R. Singh, Dharik S. Mallapragada… in Biomass Conversion and Biorefinery (2012)

Article

Privacy-preserving indexing of documents on the network

With the ubiquitous collection of data and creation of large distributed repositories, enabling search over this data while respecting access control is critical. A related problem is that of ensuring privacy ...

Mayank Bawa, Roberto J. Bayardo Jr, Rakesh Agrawal, Jaideep Vaidya in The VLDB Journal (2009)

Article

Automatic Subspace Clustering of High Dimensional Data

Data mining applications place special requirements on clustering algorithms including: the ability to find clusters embedded in subspaces of high dimensional data, scalability, end-user comprehensibility of t...

Rakesh Agrawal, Johannes Gehrke, Dimitrios Gunopulos… in Data Mining and Knowledge Discovery (2005)

Article

Watermarking relational data: framework, algorithms and analysis

We enunciate the need for watermarking database relations to deter data piracy, identify the characteristics of relational data that pose unique challenges for watermarking, and delineate desirable properties ...

Rakesh Agrawal, Peter J. Haas, Jerry Kiernan in The VLDB Journal (2003)

Article

Constraint-Based Rule Mining in Large, Dense Databases

Constraint-based rule miners find all rules in a given data-set meeting user-specified constraints such as minimum support and confidence. We describe a new algorithm that directly exploits all user-specified ...

Roberto J. Bayardo Jr, Rakesh Agrawal… in Data Mining and Knowledge Discovery (2000)

Article

Integrating Association Rule Mining with Relational Database Systems: Alternatives and Implications

Data mining on large data warehouses is becoming increasingly important. In support of this trend, we consider a spectrum of architectural alternatives for coupling mining with database systems. These alternat...

Sunita Sarawagi, Shiby Thomas, Rakesh Agrawal in Data Mining and Knowledge Discovery (2000)

Article

Scalable feature selection, classification and signature generation for organizing large text databases into hierarchical topic taxonomies

We explore how to organize large text databases hierarchically by topic to aid better searching, browsing and filtering. Many corpora, such as internet directories, digital libraries, and patent databases are...

Soumen Chakrabarti, Byron Dom, Rakesh Agrawal, Prabhakar Raghavan in The VLDB Journal (1998)

Article

Guest editor's introduction

Rakesh Agrawal in Distributed and Parallel Databases (1993)

Article

An efficient incremental LR parser for grammars with epsilon productions

This paper describes the implementation of an extension to Celentano's [2] incremental LR Parsing Algorithm that allows epsilon rules in the grammar.

Rakesh Agrawal, Keith D. Detro in Acta Informatica (1983)