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1 – 10 of 106
Article
Publication date: 20 April 2020

Jeremiah Holden Kalir, Esteban Morales, Alice Fleerackers and Juan Pablo Alperin

Social annotation (SA) is a genre of learning technology that enables the annotation of digital resources for information sharing, social interaction and knowledge…

359

Abstract

Purpose

Social annotation (SA) is a genre of learning technology that enables the annotation of digital resources for information sharing, social interaction and knowledge production. This study aims to examine the perceived value of SA as contributing to learning in multiple undergraduate courses.

Design/methodology/approach

In total, 59 students in 3 upper-level undergraduate courses at a Canadian university participated in SA-enabled learning activities during the winter 2019 semester. A survey was administered to measure how SA contributed to students’ perceptions of learning and sense of community.

Findings

A majority of students reported that SA supported their learning despite differences in course subject, how SA was incorporated and encouraged and how widely SA was used during course activities. While findings of the perceived value of SA as contributing to the course community were mixed, students reported that peer annotations aided comprehension of course content, confirmation of ideas and engagement with diverse perspectives.

Research limitations/implications

Studies about the relationships among SA, learning and student perception should continue to engage learners from multiple courses and from multiple disciplines, with indicators of perception measured using reliable instrumentation.

Practical implications

Researchers and faculty should carefully consider how the technical, instructional and social aspects of SA may be used to enable course-specific, personal and peer-supported learning.

Originality/value

This study found a greater variance in how undergraduate students perceived SA as contributing to the course community. Most students also perceived their own and peer annotations as productively contributing to learning. This study offers a more complete view of social factors that affect how SA is perceived by undergraduate students.

Details

Information and Learning Sciences, vol. 121 no. 3/4
Type: Research Article
ISSN: 2398-5348

Keywords

Article
Publication date: 29 January 2020

Engida H. Gebre and Esteban Morales

This paper aims to examine the nature and sufficiency of descriptive information included in open datasets and the nature of comments and questions users write in relation…

Abstract

Purpose

This paper aims to examine the nature and sufficiency of descriptive information included in open datasets and the nature of comments and questions users write in relation to specific datasets. Open datasets are provided to facilitate civic engagement and government transparency. However, making the data available does not guarantee usage. This paper examined the nature of context-related information provided together with the datasets and identified the challenges users encounter while using the resources.

Design/methodology/approach

The authors extracted descriptive text provided together with (often at the top of) datasets (N = 216) and the nature of questions and comments users post in relation to the dataset. They then segmented text descriptions and user comments into “idea units” and applied open-coding with constant comparison method. This allowed them to come up with thematic issues that descriptions focus on and the challenges users encounter.

Findings

Results of the analysis revealed that context-related descriptions are limited and normative. Users are expected to figure out how to use the data. Analysis of user comments/questions revealed four areas of challenge they encounter: organization and accessibility of the data, clarity and completeness, usefulness and accuracy and language (spelling and grammar). Data providers can do more to address these issues.

Research limitations/implications

The purpose of the study is to understand the nature of open data provision and suggest ways of making open data more accessible to “non expert users”. As such, it is not focused on generalizing about open data provision in various countries as such provision may be different based on jurisdiction.

Practical implications

The study provides insight about ways of organizing open dataset that the resource can be accessible by the general public. It also provides suggestions about how open data providers could consider users' perspectives including providing continuous support.

Originality/value

Research on open data often focuses on technological, policy and political perspectives. Arguably, this is the first study on analysis of context-related information in open-datasets. Datasets do not “speak for themselves” because they require context for analysis and interpretation. Understanding the nature of context-related information in open dataset is original idea.

Details

Information and Learning Sciences, vol. 121 no. 1/2
Type: Research Article
ISSN: 2398-5348

Keywords

Article
Publication date: 1 November 1999

A. Alonso, Esteban and D. Morales

Methods of testing simple hypotheses about lifetime parameters from doubly censored data are given on the basis of the maximum likelihood principle. It is shown that…

1195

Abstract

Methods of testing simple hypotheses about lifetime parameters from doubly censored data are given on the basis of the maximum likelihood principle. It is shown that, under the assumptions of standard type, the asymptotic distribution of proposed statistics is chi‐square or linear combination of chi‐square distributions. The choice of statistics optimal from the point of view of power is discussed and illustrated by several examples.

Details

Kybernetes, vol. 28 no. 8
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 1 November 1995

Esteban and D. Morales

Proposes a partially parametric estimation of a survival function when data may be both left and right censored. Assuming that the chance of censoring is not related to…

Abstract

Proposes a partially parametric estimation of a survival function when data may be both left and right censored. Assuming that the chance of censoring is not related to the individual’s survival time, the proposed estimator treats the uncensored observations non parametrically and uses parametic models for the censored observations. In this way, the results extend Klein et al.’s work (1990) to the doubly censored data case. Shows some of the properties of the estimator when the correct theoretical parametric model is selected.

Details

Kybernetes, vol. 24 no. 8
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 5 April 2022

Esma Asil, Aslı Uçar, Çağla Zeynep Tunay and Aynur Bütün Ayhan

This study aims to evaluate the nutritional habits, eating behavior and nutritional status of children with autism.

Abstract

Purpose

This study aims to evaluate the nutritional habits, eating behavior and nutritional status of children with autism.

Design/methodology/approach

This study was conducted with 60 boys and 16 girls diagnosed with autism (mean age: 8.3 ± 4.9 years). Research data were collected from parents of children with autism using a questionnaire form developed by researchers after literature searching. The height and body weight of the children were recorded, and body mass index (BMI) was calculated.

Findings

Almost half of the children except the 13–18 age group were overweight/obese according to BMI. Difficulty in giving new food was 73.1% in the 2–5 age group, 70% in the 6–12 age group and 40% in the 13–18 age group (p = 0.04). It was determined that the children refused to consume a median of 3 (1–8) types of food (p = 0.04) and were obsessed with consuming 2 (1–4) types of food and 1 (1–4) type of beverages. Additionally, milk and dairy products were refused significantly higher between 2–5 and 6–12 years than 13–18 years (p = 0.02). Also, it was found that age had an inverse effect on refusal food number (β = 0.38, 95% CI = −0.30 − −0.08, p = 0.01). In conclusion, obesity and nutritional problems such as food selectivity, food refusal and obsessive eating behavior are encountered in children with autism which affect children socially and physically and should not be ignored when planning the treatment of children with autism.

Research limitations/implications

The lack of a control group to compare the results of children with autism is an important limitation of the study.

Originality/value

This study fulfills a defined need to examine and evaluate Turkish children’s nutritional status, nutritional habits and eating behavior with autism.

Details

Nutrition & Food Science , vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 1 December 2003

T. Pérez and J.A. Pardo

Goodness‐of‐fit test based on Kϕ‐divergence between observed and theoretical frequencies are considered. The asymptotic chi‐square null distribution and three alternative…

Abstract

Goodness‐of‐fit test based on Kϕ‐divergence between observed and theoretical frequencies are considered. The asymptotic chi‐square null distribution and three alternative approximations to the exact distribution function of this family are compared in small samples. Numerical results are presented for the symmetric null hypothesis for different multinomial sample sizes with various cell numbers. Exact power under specific alternatives to the symmetric null hypothesis are calculated and a comparison with the family of power divergence statistics is made.

Details

Kybernetes, vol. 32 no. 9/10
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 1 January 1996

Mrs. Agueda Esteban Talaya and Mrs. Eva Reinares Lara

This paper analyzes the evolution of research undertaken in the last 35 years on tourist demand in Spain. The research considered has been classified into three fields…

Abstract

This paper analyzes the evolution of research undertaken in the last 35 years on tourist demand in Spain. The research considered has been classified into three fields with their own specific touristic characteristics; research projects that have been oriented toward the study of demand as a whole, those that study the origin of demand in specific zones and destinations and thirdly, those that address the demand of concrete tourist products and services. Forecast studies on tourist demand which are included in some of the above will also be included in this paper. The revision of these studies will take three basic factors into account: the area and the objectives of the project, the method used and the application and practical utility of the study.

Details

The Tourist Review, vol. 51 no. 1
Type: Research Article
ISSN: 0251-3102

Keywords

Article
Publication date: 24 October 2008

Crawford Spence and Mark Shenkin

The aim of this paper is to consider the role of mass mobilisations against international business in Bolivia and analyse their wider implications for the structure of the…

Abstract

Purpose

The aim of this paper is to consider the role of mass mobilisations against international business in Bolivia and analyse their wider implications for the structure of the state, relating this to recent studies looking at the scope of resistance to international business.

Design/methodology/approach

The analysis draws from a series of formal interviews with key political actors in Bolivia which were part of a wider ethnographic study exploring the emergence of the new hegemonic bloc in the country. The narrative is framed using the discourse theory of Laclau, and the methodology inspired by Bourdieu's understanding of social ethnography.

Findings

The paper finds that the uprisings against international business in Cochabamba in 2000 and El Alto in 2003 were pivotal in developing a wider critical consciousness to oppose neoliberalism in Bolivia. Subsequently, these social movements constructed a new identity as the “people” and implemented a more radical form of democracy.

Research limitations/implications

The time period studied is such that it was impossible to assess whether or not this counter‐hegemonic movement has established a hegemonic bloc that has the potential to filter out into international resistance movements against business.

Practical implications

The paper offers a range of insights that may be useful to social movements concerned with constructing national and international struggles against capitalism and/or neoliberalism.

Originality/value

As far as is known, this is one of the first papers to outline how civil society resistance to international business can lead to wholesale shifts in the balance of power within a nation state and the construction of a substantively new political order.

Details

Critical perspectives on international business, vol. 4 no. 4
Type: Research Article
ISSN: 1742-2043

Keywords

Article
Publication date: 6 June 2022

Huizhong Xiong, Shengtang Jiang, Yong Huang and Jian Zhang

In order to explore the damage probability of bridge engineering in the event of earthquake in the construction stages, the analysis method of seismic vulnerability in the…

Abstract

Purpose

In order to explore the damage probability of bridge engineering in the event of earthquake in the construction stages, the analysis method of seismic vulnerability in the construction stages is proposed in this paper.

Design/methodology/approach

Based on the joint simulation function of construction stage conditions and seismic response conditions of MIDAS/Civil finite element analysis software, combined with the method of IDA analysis and compared the relationship between demand and capacity.

Findings

The research shows that: (1) the average seismic loss in different construction stages varies greatly; (2) the seismic vulnerability varies greatly in different construction stages. The vulnerability of the bridge in stage 6 is determined by the longitudinal direction of bridge. Therefore, during the construction of the whole bridge, we should focus on strengthening the disaster and loss prevention strategy of earthquake insurance in the longitudinal direction of bridge. (3) The application of the secondary dead load mainly affects the fragilityin the longitudinal direction of bridge, but has little effect on the fragility in the transversal direction of bridge.

Originality/value

This paper is to explore the seismic vulnerability of a typical simply supported continuous bridge during the construction stages, and to trace the entire construction stage of a typical simply supported continuous bridge. According to the characteristics of the system transformation in the actual construction steps, demand-capacity ratios were established based on incremental dynamic analysis (IDA) and performance indicators of moment curvature and stability, and the seismic vulnerability research is carried out for the construction stages prone to earthquake damage. Furthermore, it provides a basis for seismic risk assessment of such bridges in different construction stages.

Details

Multidiscipline Modeling in Materials and Structures, vol. 18 no. 3
Type: Research Article
ISSN: 1573-6105

Keywords

Article
Publication date: 28 May 2020

Ching-Shan Chen

Taiwan experiences frequent seismic activity. Major earthquakes in recent history have seriously damaged the school buildings. School buildings in Taiwan are intended to…

Abstract

Purpose

Taiwan experiences frequent seismic activity. Major earthquakes in recent history have seriously damaged the school buildings. School buildings in Taiwan are intended to serve both as places of education and as temporary shelters in the aftermath of major earthquakes. Therefore, the seismic performance assessments of school buildings are critical issues that deserve investigation.

Design/methodology/approach

This paper develops a methodology that uses principal component analysis to generalize the seismic factors from the basic seismic parameters of school buildings, uses data mining to cluster different school building sizes and uses grey theory to analyze the relationship between seismic factors and the seismic performance of school buildings. Additionally, this paper employs the Artificial Neural Network (ANN) to deduce the seismic assessment model for school buildings. Finally, it adopts support vector machine to validate the ANN’s deductive results.

Findings

An empirical study was conducted on 326 school buildings in the central area of Taichung City, Taiwan, to illustrate the effectiveness of the proposed approach. Results show that thickness of wall and width of middle-row column relate significantly with school-building seismic performance.

Originality/value

This paper provides a model that structural engineers or architects may use to design school buildings that are adequately resistant to earthquakes as well as a reference for future academic research.

Details

Engineering Computations, vol. 37 no. 9
Type: Research Article
ISSN: 0264-4401

Keywords

1 – 10 of 106