University of North Carolina at Greensboro

About: University of North Carolina at Greensboro is a education organization based out in Greensboro, North Carolina, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 5481 authors who have published 13715 publications receiving 456239 citations. The organization is also known as: UNCG & UNC Greensboro.

Hotel companies' environmental policies and practices: a content analysis of their web pages

Abstract: Purpose – The purpose of this paper is to analyze the environmental management policies and practices of the top 50 hotel companies as disclosed on their corporate web sites.Design/methodology/approach – This study employed content analysis to review the web sites of the top 50 hotel companies as defined herein.Findings – Only 46 per cent of the selected hotel companies used web pages to post information related to environmental issues on their public web sites. The web pages of Wyndham, IHG, Accor, Whitbread, Hyatt, Rezidor, Sol Melia, TUI, and Scandic featured more revealing environmental information than that posted by other companies, which indicated their environmental commitment and engagement. The results of content analysis identified 12 major environmental focus areas in which the sample hotel companies engaged.Research limitations/implications – The findings on environmental policies and practices are limited to the environmental information featured on the web sites of the top 50 hotel companie...

Relationship between delay in performing direct coronary angioplasty and early clinical outcome in patients with acute myocardial infarction.

Abstract: Background—Time to treatment with thrombolytic therapy is a critical determinant of mortality in acute myocardial infarction. Little is known about the relationship between the time to treatment with direct coronary angioplasty and clinical outcome. The objectives of this study were to determine both the time required to perform direct coronary angioplasty in the Global Use of Strategies to Open Occluded Arteries in Acute Coronary Syndromes (GUSTO-IIb) trial and its relationship to clinical outcome. Methods and Results—Patients randomized to direct coronary angioplasty (n=565) were divided into groups based on the time between study enrollment and first balloon inflation. Patients randomized to angioplasty who did not undergo the procedure were also analyzed. The median time from study enrollment to first balloon inflation was 76 minutes; 19% of patients assigned to angioplasty did not undergo an angioplasty procedure. The 30-day mortality rate of patients who underwent balloon inflation ≤60 minutes after...

Reliability and Validity of Parent and Teacher Ratings of Attention-Deficit/Hyperactivity Disorder Symptoms:

Abstract: The reliability and criterion-related validity of the Home and School versions of the AD/HD Rating Scale-IV were evaluated in a nonreferred sample of 71 students. Parent and teacher rat-ings were obtained 4 weeks apart at a time contemporaneous with observations of classroom behavior and academic productivity. Results indicated adequate levels of internal consistency, test-retest reliability, and cross-informant agreement for both parent and teacher ratings. Teacher ratings were significantly correlated with classroom observational data, and parent ratings were primarily related to behavior ratings. The discriminant validity of these scales also was examined in a sample of 92 clinic- referred children. Both the Home and School versions of the AD/HD Rating Scale-IV were found to discriminate significantly between children with and without AD/HD. The AD/HD Rating Scale-IV appears to have adequate psychometric properties for the screening and assessment of AD/HD.

SchemaSQL - A Language for Interoperability in Relational Multi-Database Systems

Abstract: We provide a principled extension of SQL, called SchemaSQL , that offers the capability of uniform manipulation of data and meta-data in relational multi-database systems. We develop a precise syntax and semantics of SchemaSQL in a manner that extends traditional SQL syntax and semantics, and demonstrate the following. (1) SchemaSQL retains the flavour of SQL while supporting querying of both data and meta-data. (2) It can be used to represent data in a database in a structure substantially different from original database, in which data and meta-data may be interchanged. (3) It also permits the creation of views whose schema is dynamically dependent on the contents of the input instance. (4) While aggregation in SQL is restricted to values occurring in one column at a time, SchemaSQL permits “horizontal” aggregation and even aggregation over more general “blocks” of information. (5) SchemaSQL provides a great facility for interoperability and data/meta-data management in relational multi-database systems. We provide many examples to illustrate our claims. We outline an architecture for the implementation of SchemaSQL and discuss implementation algorithms based on available database technology that allows for powerful integration of SQL based relational DBMS. l This work was supported by grants from the Natural Sciences and Engineering Research Council of Canada (NSERC), the National Science Foundation (NSF), and The University of North Carolina at Greensboro. t Dept of Computer Science, Concordia University, Montreal, Canada. {laks,subbu}Ocs.concordia.ca $ Dept of Mathematical Sciences, University of North Carolina, Greensboro, NC. sadri@uncg.edu Permission to copy without fee all or port of this material is gmnted provided that the copies ore not, mode or distributed for direct commercial advantage, the VLDB copyright notice and the title of the publication and its dote appear, and notice is given that copying is by permission of the Very Large Data Base Endowment. To copy otherwise, or to republish, requires o fee and/or special permission from the Endowment. Proceedings of the 22nd VLDB Conference Mumbai(Bombay), India, 1996