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Article
Publication date: 5 September 2018

Melinda Oroszlányová, Carla Teixeira Lopes, Sérgio Nunes and Cristina Ribeiro

The quality of consumer-oriented health information on the web has been defined and evaluated in several studies. Usually it is based on evaluation criteria identified by the…

Abstract

Purpose

The quality of consumer-oriented health information on the web has been defined and evaluated in several studies. Usually it is based on evaluation criteria identified by the researchers and, so far, there is no agreed standard for the quality indicators to use. Based on such indicators, tools have been developed to evaluate the quality of web information. The HONcode is one of such tools. The purpose of this paper is to investigate the influence of web document features on their quality, using HONcode as ground truth, with the aim of finding whether it is possible to predict the quality of a document using its characteristics.

Design/methodology/approach

The present work uses a set of health documents and analyzes how their characteristics (e.g. web domain, last update, type, mention of places of treatment and prevention strategies) are associated with their quality. Based on these features, statistical models are built which predict whether health-related web documents have certification-level quality. Multivariate analysis is performed, using classification to estimate the probability of a document having quality given its characteristics. This approach tells us which predictors are important. Three types of full and reduced logistic regression models are built and evaluated. The first one includes every feature, without any exclusion, the second one disregards the Utilization Review Accreditation Commission variable, due to it being a quality indicator, and the third one excludes the variables related to the HONcode principles, which might also be indicators of quality. The reduced models were built with the aim to see whether they reach similar results with a smaller number of features.

Findings

The prediction models have high accuracy, even without including the characteristics of Health on the Net code principles in the models. The most informative prediction model considers characteristics that can be assessed automatically (e.g. split content, type, process of revision and place of treatment). It has an accuracy of 89 percent.

Originality/value

This paper proposes models that automatically predict whether a document has quality or not. Some of the used features (e.g. prevention, prognosis or treatment) have not yet been explicitly considered in this context. The findings of the present study may be used by search engines to promote high-quality documents. This will improve health information retrieval and may contribute to reduce the problems caused by inaccurate information.

Details

Online Information Review, vol. 42 no. 7
Type: Research Article
ISSN: 1468-4527

Keywords

Book part
Publication date: 12 June 2015

Carla Teixeira Lopes and Cristina Ribeiro

Prior studies have shown that terminology support can improve health information retrieval but have not taken into account the characteristics of the user performing the search…

Abstract

Prior studies have shown that terminology support can improve health information retrieval but have not taken into account the characteristics of the user performing the search. In this chapter, the impact of translating queries’ terms between lay and medico-scientific terminology, in users with different levels of health literacy and topic familiarity, is evaluated. Findings demonstrate that medico-scientific queries demand more from the users and are mostly aimed at health professionals. In addition, these queries retrieve documents that are less readable and less well understood by users. Despite this, medico-scientific queries are associated with higher precision in the top-10 retrieved documents results and tend slightly to generate knowledge with less incorrect contents, the researchers concluded that search engines should provide query suggestions with medico-scientific terminology, whenever the user is able to digest it, that is, in users above the lowest levels of health literacy and topic familiarity. On the other hand, retrieval systems should provide lay alternative queries in users with inadequate health literacy or in those unfamiliar with a topic. In fact, the quantity of incorrect contents in the knowledge that emerges from a medico-scientific session tends to decrease with topic familiarity and health literacy. In terms of topic familiarity, the opposite happens with Graded Average Precision. Moreover, users most familiar with a topic tend to have higher motivational relevance with medico-scientific queries than with lay queries. This work is the first to consider user context features while studying the impact of a query processing technique in several aspects of the retrieval process, including the medical accuracy of the acquired knowledge.

Details

Current Issues in Libraries, Information Science and Related Fields
Type: Book
ISBN: 978-1-78441-637-9

Keywords

Article
Publication date: 29 November 2011

Carla Teixeira Lopes and Cristina Ribeiro

The intent of this work is to evaluate several generalist and health‐specific search engines for retrieval of health information by consumers: to compare the retrieval…

1481

Abstract

Purpose

The intent of this work is to evaluate several generalist and health‐specific search engines for retrieval of health information by consumers: to compare the retrieval effectiveness of these engines for different types of clinical queries, medical specialties and condition severity; and to compare the use of evaluation metrics for binary relevance scales and for graded ones.

Design/methodology/approach

The authors conducted a study in which users evaluated the relevance of documents retrieved by four search engines for two different health information needs. Users could choose between generalist (Bing, Google, Sapo and Yahoo!) and health‐specific (MedlinePlus, SapoSaúde and WebMD) search engines. The authors then analysed the differences between search engines and groups of information needs with six different measures: graded average precision (gap), average precision (ap), gap@5, gap@10, ap@5 and ap@10.

Findings

The results show that generalist web search engines surpass the precision of health‐specific engines. Google has the best performance, mainly in the top ten results. It was found that information needs associated with severe conditions are associated with higher precision, as are overview and psychiatry questions.

Originality/value

The study is one of the first to use a recently proposed measure to evaluate the effectiveness of retrieval systems with graded relevance scales. It includes tasks from several medical specialties, types of clinical questions and different levels of severity which, to the best of the authors' knowledge, has not been done before. Moreover, users have considerable involvement in the experiment. The results help in understanding how search engines differ in their responses to health information needs, what types of online health information are more common on the web and how to improve this type of search.

Content available
Book part
Publication date: 12 June 2015

Abstract

Details

Current Issues in Libraries, Information Science and Related Fields
Type: Book
ISBN: 978-1-78441-637-9

Article
Publication date: 5 March 2018

Sergio Jesus Teixeira, Carla Maria Lopes Casteleiro, Ricardo Gouveia Rodrigues and Maria Dulce Guerra

This study aims to pursue better understanding and investigation of the factor that can have an impact on the level of entrepreneurial activity. To achieve this, statistical…

1880

Abstract

Purpose

This study aims to pursue better understanding and investigation of the factor that can have an impact on the level of entrepreneurial activity. To achieve this, statistical analysis was conducted. Indicators from 22 countries of the European Union were reunited to compare the differences between entrepreneurial intention and entrepreneurship.

Design/methodology/approach

To analyse entrepreneurial intentions in Europe, two databases of the Global Databases Entrepreneurship Monitor (GEM) were used, namely, “GEM NES Key Indicators 2007-2015” and “GEM APS Key Indicators 2001-2015”, available at www.gemconsortium.org/data/sets, considering only the data from 2015 and analysed with IBM SPSS Statistics tool. Each original database includes 60 countries, and this study is limited to an analysis of only countries of the European continent, resulting in a sample of 22 countries.

Findings

The major determinants of the entrepreneurial intention in the countries studied were: “perceived capacity”; “entrepreneurial intention” itself which will, in fact, influence the “rate of nascent entrepreneurship”; “governmental and political factors” in relation to the respective “financing for the entrepreneur”; and “basic education and training” in entrepreneurship which influences “research and development”.

Research limitations/implications

This study has few limitations because, as it refers to a European analysis, it would require a more generalized analysis of the factors, such as to include more and better indicators for the demographic, economic and institutional determinants of the entrepreneurial intentions and entrepreneurship in the European countries under study. For future research on the explanation of commercial activity, we must address the methodological problem of distinguishing the effect of business intentions from other determinants, as these also influence entrepreneurial attitudes. Despite the conceptual and empirical limitations, the conclusions of the study imply and provide several recommendations for the future policy of entrepreneurship in Europe.

Practical implications

In the past decades, entrepreneurship and entrepreneurial intentions have gained increasing attention from academics, governments and politicians around the world. It is seen as a critical factor for economic growth and development of a country, as it contributes to the solution of fundamental macroeconomic issues such as increased employment, development of competitiveness, innovation and the creation of economic and social values. Therefore, academics and researchers, governments and politicians are interested in identifying the differences and causes between countries that influence the level of entrepreneurship as a phenomenon associated with business activity in a country.

Social implications

Results reveal that some of the key determinants of entrepreneurial intention in the European countries are related to policy factors, like “governmental and political factors” and “basic education and training” in entrepreneurship. In this way, the study can help politicians elaborate the policies related to entrepreneurship, implying an increase in entrepreneurial intentions in a country and consequently implications for socio-economic development.

Originality/value

To achieve the originality of the study, two databases of the GEM of 2015 were used and duly adapted. In this way, the value of the article is very significant, as it is possible to group data from several countries, to test hypotheses and to arrive at very useful conclusions that may be of interest to policymakers at both the European and national levels. The adoption of adequate policies promotes and supports entrepreneurship in the context of the Europe 2020 Strategy, which is the European Union’s growth strategy.

Details

International Journal of Innovation Science, vol. 10 no. 1
Type: Research Article
ISSN: 1757-2223

Keywords

Content available
Book part
Publication date: 5 November 2016

Abstract

Details

Public Spaces: Times of Crisis and Change
Type: Book
ISBN: 978-1-78635-463-1

Article
Publication date: 30 October 2020

Sofia Almeida Costa, Sofia Vilela, Daniela Correia, Milton Severo, Carla Lopes and Duarte Torres

This study aims to evaluate in the Portuguese population the consumption of packaged food (PF) vs non-packaged food, the associated factors and to estimate the contribution of…

Abstract

Purpose

This study aims to evaluate in the Portuguese population the consumption of packaged food (PF) vs non-packaged food, the associated factors and to estimate the contribution of specific food groups to the use of packaging materials.

Design/methodology/approach

A representative sample of the population was evaluated within the National Food, Nutrition and Physical Activity Survey 2015–2016 (n = 5,811, 3 months-84y). Dietary data were collected by two non-consecutive food diaries (children) or 24-h recalls, using a software program which integrates FoodEx2—Food classification system. Food packaging materials were measured according to the amount of PF by linear regression. The results were analyzed considering the distribution of the Portuguese population.

Findings

The reported amount of PF was 1,530 g/person/day (57%), in which PF in plastic was the most reported (69%), mainly associated with “Non-alcoholic beverages” (38%). “Fruit and vegetables” food group is most frequently reported without a package (35%). Men consumed significantly more quantity of PF for all materials, excepted for “paperboard/paper”, but also significantly more quantity of food without a package (β = 135.3 [95%IC: 63.7; 207.0]). Children and adolescents consumed more quantity of PF in multilayer materials (β = 177.8 [95%IC: 154.8; 200.9]) and significantly less quantity of food without a package (β = −343.8 [95%IC: −408.9; −278.6]). Also, more educated people consume more food without a package (β = 106.9 [95%IC: 33.2; 180.7]).

Originality/value

The Portuguese population presents a large consumption of PF. Male population and adults were identified as groups with higher consumption of PF.

Details

British Food Journal, vol. 123 no. 2
Type: Research Article
ISSN: 0007-070X

Keywords

Book part
Publication date: 23 March 2017

Barbara de Lima Voss, David Bernard Carter and Bruno Meirelles Salotti

We present a critical literature review debating Brazilian research on social and environmental accounting (SEA). The aim of this study is to understand the role of politics in…

Abstract

We present a critical literature review debating Brazilian research on social and environmental accounting (SEA). The aim of this study is to understand the role of politics in the construction of hegemonies in SEA research in Brazil. In particular, we examine the role of hegemony in relation to the co-option of SEA literature and sustainability in the Brazilian context by the logic of development for economic growth in emerging economies. The methodological approach adopts a post-structural perspective that reflects Laclau and Mouffe’s discourse theory. The study employs a hermeneutical, rhetorical approach to understand and classify 352 Brazilian research articles on SEA. We employ Brown and Fraser’s (2006) categorizations of SEA literature to help in our analysis: the business case, the stakeholder–accountability approach, and the critical case. We argue that the business case is prominent in Brazilian studies. Second-stage analysis suggests that the major themes under discussion include measurement, consulting, and descriptive approach. We argue that these themes illustrate the degree of influence of the hegemonic politics relevant to emerging economics, as these themes predominantly concern economic growth and a capitalist context. This paper discusses trends and practices in the Brazilian literature on SEA and argues that the focus means that SEA avoids critical debates of the role of capitalist logics in an emerging economy concerning sustainability. We urge the Brazilian academy to understand the implications of its reifying agenda and engage, counter-hegemonically, in a social and political agenda beyond the hegemonic support of a particular set of capitalist interests.

Details

Advances in Environmental Accounting & Management: Social and Environmental Accounting in Brazil
Type: Book
ISBN: 978-1-78635-376-4

Keywords

Abstract

Details

Public Spaces: Times of Crisis and Change
Type: Book
ISBN: 978-1-78635-463-1

Open Access
Article
Publication date: 27 March 2020

Celeste Eusébio, Maria João Carneiro, Mara Madaleno, Margarita Robaina, Vítor Rodrigues, Michael Russo, Hélder Relvas, Carla Gama, Myriam Lopes, Vania Seixas, Carlos Borrego and Alexandra Monteiro

Tourism may have important positive and negative economic, socio-cultural and environmental impacts. However, cultural and natural resources are also the base to the development…

12132

Abstract

Purpose

Tourism may have important positive and negative economic, socio-cultural and environmental impacts. However, cultural and natural resources are also the base to the development of competitive destinations and changes in these resources can have an important impact on tourism development. Despite the considerable literature regarding the impacts of tourism, a limited number of studies examine the impact of the environment on tourism, specifically the impact of air quality (AQ). Therefore, this paper aims to review what is known about the impact of AQ on tourism demand, analysing the different methods and approaches used, as well as the results obtained.

Design/methodology/approach

A systematic literature review method was used to examine the state of the art in this topic and identify research gaps and new research directions. Only 26 papers were identified that examine the impact of AQ on tourism demand.

Findings

The majority of the studies were carried out in China and investigate the impact of AQ on tourism from the perspective of tourism demand. Both global (tourism demand) and individual (tourist perceptions) approaches have been used to investigate the impact of AQ on tourism.

Originality/value

This is the first systematic literature review on the impact of outdoor AQ on tourism demand. Moreover, this paper analyses the methods and approaches that have been used in the literature to examine the impact of outdoor AQ on tourism demand. The paper ends with a discussion on the identified research gaps concerning the influence of AQ on tourism development.

Details

Journal of Tourism Futures, vol. 7 no. 1
Type: Research Article
ISSN: 2055-5911

Keywords

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