Search results

Economic load dispatch (ELD) is one of the crucial optimization problems in power system planning and operation. The ELD problem with valve point loading (VPL) and multi-fuel options (MFO) is defined as a non-smooth and non-convex optimization problem with equality and inequality constraints, which obliges an efficient heuristic strategy to be addressed. The purpose of this study is to present a new and powerful heuristic optimization technique (HOT) named as squirrel search algorithm (SSA) to solve non-convex ELD problems of large-scale power plants.

The suggested SSA approach is aimed to minimize the total fuel cost consumption of power plant considering their generation values as decision variables while satisfying the problem constraints. It confers a solution to the ELD issue by anchoring with foraging behavior of squirrels based on the dynamic jumping and gliding strategies. Furthermore, a heuristic approach and selection rules are used in SSA to handle the constraints appropriately.

Empirical results authenticate the superior performance of SSA technique by validating on four different large-scale systems. Comparing SSA with other HOTs, numerical results depict its proficiencies with high-qualitative solution and by its excellent computational efficiency to solve the ELD problems with non-smooth fuel cost function addressing the VPL and MFO. Moreover, the non-parametric tests prove the robustness and efficacy of the suggested SSA and demonstrate that it can be used as a competent optimizer for solving the real-world large-scale non-convex ELD problems.

This study has compared various HOTs to determine optimal generation scheduling for large-scale ELD problems. Consequently, its comparative analysis will be beneficial to power engineers for accurate generation planning.

To the best of the authors’ knowledge, this manuscript is the first research work of using SSA approach for solving ELD problems. Consequently, the solution to this problem configures the key contribution of this paper.

This paper aims to explore the application of drumstick (Moringa oleifera) flower (DF) as a functional antioxidative ingredient in goat meat product.

Dried DF was included in the product formulation at 1% (Treatment I) and 2% (Treatment II) levels. The physicochemical, colour, textural and sensory quality as well as storage stability of nuggets with DF were determined against control.

The dried DF was found to be rich source of protein and dietary fibre, possessing good antioxidant potential. Chromatographic analysis of DF extract showed presence of 14 active principles known to have antioxidative properties. Inclusion of dried DF decreased pH values of emulsion (p = 0.005) as well as nuggets (p < 0.001) and increased (p < 0.001) the ash, dietary fibre and phenolic contents. The added DF affected the product’s lightness (p = 0.017), yellowness (p < 0.001, hardness (p < 0.001), adhesiveness (p = 0.032), cohesiveness (p = 0.006), gumminess and chewiness (p < 0.001). Sensory characteristics of control and product with DF were statistically similar except low (p = 0.002) flavour score for Treatment II. DF inclusion lowered (p < 0.001) thiobarbituric acid reactive substances number and total plate count.

DF can be used as a source of antioxidants and dietary fibre in goat meat nuggets to enhance their health value, functionality and storage stability.

Foods including goat meat nuggets enriched with goodness of functional ingredients like dietary fibre and natural antioxidants are gaining consumer’s preference globally. Inclusion of drumstick flower in goat meat nuggets significantly increases the dietary fibre and antioxidants making such products healthier and more stable. Consumption of goat meat nuggets added with drumstick flower is expected to improve consumer’s well-being as well.

The purpose of this research is to investigate how parents and caregivers describe their concerns about the HPV vaccine for their children on open Internet websites. The study examines what the discourse among parents reveals about their concerns regarding the HPV vaccine.

Our exploratory study utilized a grounded theory approach as a method of collecting data and simultaneously formulating research questions based on emerging themes from the data. We used purposeful sampling to select sets of comments posted on websites that provided news, scientific information, or parental support regarding HPV and its vaccine.

Findings suggest support for Bond and Nolan’s (2011) theory that familiarity with a disease is central to parents’ assessment of risk, and that dread of a serious disease such as cervical cancer is weaker than dread of unknown possible side effects in parents’ motivation to give or withhold the vaccine for their children.

Research limitations include our usage of a purposeful convenience sample of websites. The limitation of this sampling technique is that the comments made by website “users” and used in the analysis may not be representative of the wider population, and may include Americans as well as non-Americans.

Our research fills an important gap in the literature by looking at the ways in which parents share their concerns about the HPV vaccine on Internet websites as they consider whether to reject, delay, or consent to the vaccine.

The chapter sheds light on how top management teams (TMTs) across multinational firms tackle the ongoing disruptive digital transformation during the pandemic era. The chapter includes basic definitions and global and regional trends on data governance and digital transformation across multinational firms from advanced and emerging markets. Finally, it provides several case studies demonstrating the theoretical and practical applicability of how data governance and digital transformation emerged from top management team perspectives. The chapter outlines the importance of leadership and top management in dealing with emerging technologies and business processes across global firms.

The increased use of, and reliance upon, technology and digitalisation, especially in the galleries, libraries, archives and museums [GLAM] sector, has motivated innovative approaches to the curation of cultural material. These changes are especially evident when collaborating with Indigenous partners. Indigenous Data Governance [IDG] and Indigenous Data Sovereignty [IDS], with an emphasis on self-determination of Indigenous peoples, have called for an emerging focus on ethical and culturally sensitive approaches to data collection and management across a range of disciplines and sectors.

This chapter reports on broader discussions, specifically with mid-North South Australia, Indigenous community members around the appropriate and ethical collection, representation and curation of cultural material on Country applying digital formats. It investigates ways to create a ‘future identity’ through built form as well as providing a ‘safe’ place for preservation of their oral histories.

It highlights the many questions raised around the ethically and culturally sensitive aspects of the collection, curation and archiving of Indigenous cultural material. It documents the preliminary outcomes of these conversations in the context of current research on IDS best practices in the field. The non-Aboriginal authors acknowledge our supporting position in the realisation of effective IDS and self-determination of our Aboriginal partners.

Internet is both a medium and a platform for information exchange. This characteristic of internet is gradually metamorphosing it into an e-learning enabler. A significant percentage of internet users access health-related information through the medium of internet, but little is known about the factors that determine such behaviour. This study aims to explore the factors that determine the behaviour of those seeking health-related information in the virtual world.

The present study analyses the role of perceived ease of usefulness (PEOU), perceived usefulness (PU), self-efficacy (SE) and information quality (IQ) on the intention (IU) of the internet users to seek health-related information. Researcher-controlled sampling was used for data collection from 210 university students. Exploratory factor analysis (EFA), t-test and correlation have been used for data analysis.

The results of the study demonstrate that except SE, all other factors have a positive relationship with the intention of the users to seek health-related information. The findings suggest that PU and IQ overshadow PEOU in encouraging the users seeking such health-related information over the internet.

The present study extends the understanding of e-learning adoption associated with seeking health-related information. The researchers propose an extended technology acceptance model (TAM) model to study the factors influencing the use of internet in seeking health-related information by the students enrolled in medical and non-medical courses.

This paper brings focus and attention to the aspect of time within health information behaviour. The purpose of this paper is to critically assess and present strengths and weaknesses of utilising the infodemiology approach and metrics as a novel way to examine temporal variations and patterns of online health information behaviour. The approach is shortly exemplified by presenting empirical evidence for temporal patterns of health information behaviour on different time-scales.

A short review of online health information behaviour is presented and methodological barriers to studying the temporal nature of this behaviour are emphasised. To exemplify how the infodemiology approach and metrics can be utilised to examine temporal patterns, and to test the hypothesis of existing rhythmicity of health information behaviour, a brief analysis of longitudinal data from a large discussion forum is analysed.

Clear evidence of robust temporal patterns and variations of online health information behaviour are shown. The paper highlights that focussing on time and the question of when people engage in health information behaviour can have significant consequences.

Studying temporal patterns and trends for health information behaviour can help in creating optimal interventions and health promotion campaigns at optimal times. This can be highly beneficial for positive health outcomes.

A new methodological approach to study online health information behaviour from a temporal perspective, a phenomenon that has previously been neglected, is presented. Providing evidence for rhythmicity can complement existing epidemiological data for a more holistic picture of health and diseases, and their behavioural aspects.

The purpose of this paper is to explore teachers' behaviours in completing an internet survey using decision trees. Furthermore, to reduce the complexity of the decision trees, a statistical technique was used to decrease the number of input variables in the decision trees.

A dataset of 47,647 samples was used to build the decision trees. These samples were collected from an internet survey of teachers in Taiwan. The output of the decision trees was the answering time (the time taken to complete the internet questionnaire). Eight variables were selected as the inputs for the decision trees. Two techniques were employed to build the decision trees – the exhaustive chi‐squared automatic interaction detector (ECHAID) and classification and regression tree (CRT) analysis. To reduce the complexity of the decision models, factor analysis technique was used to decrease the data dimensions (number of input variables) and to obtain a simplified decision model. One‐way ANOVA was used to validate the effects of the dimension reduction.

From the results of the factor analysis, a simplified decision tree is recommended using four input variables – teaching years, school level, sex and area. The classification accuracy of the simplified model is statistically equivalent to that of the original one, which used eight input variables.

The complexity of decision trees theoretically depends on the number of input variables. This study used a statistical technique to decrease the number of input variables and thereby reduce the complexity of the decision trees. A statistical technique was employed to validate that the classification accuracy is not statistically different between the original decision model and the simplified one. The decision models proposed in this paper can be applied in estimating the answering time for completing a questionnaire during an internet survey.

This paper aims to examine the health technology use in health information seeking, communication and personal health information management, as well as in the effects they may have on his relationship with the physician and on the consumption of medical resources.

An online survey was conducted. The questionnaires were distributed via online health discussion forums using Google's survey software with a summary presentation of the study’s objective. The final selection of 362 individuals was made using social media, direct email and collaboration with community groups. The empirical validation of the causal model was conducted using the partial least square approach.

The results show that the use of e-health strengthens the quality of the patient–physician relationship and patient empowerment while increasing the consumption of medical resources.

The results of this research indicate that the internet has transformed the relationship of patients to health, to their doctors and to the health-care system. In this new context, a reconsideration of the status of the patient must be considered by health service providers.

Over the past few years, the internet has expanded rapidly, and it has been considered a systematic way that consumers use to retrieve health-related information. However, the existing literature does not provide an articulated view of online health information-seeking behaviour through an in-depth understanding of users’ searching-related behaviour. The objectives of this study are to identify the factors affecting consumers’ health-related internet use and recognise the relationships between those specified and health-related internet use. Finally, the recommendations are made based on the findings.

An amalgamated model of technology acceptance model and health belief model was used to hypothesise health-related internet use behaviour, which is then tested using a cross-sectional survey of 287 Sri Lankan managerial-level employees. The covariance-based structural equation modelling with AMOS was used to check the study hypotheses.

Findings of this study depict five factors contributing to consumers’ health-related internet use as follows: perceived health risk towards chronic diseases consisting of perceived susceptibility and perceived severity; health consciousness; perceived usefulness of the internet; perceived ease of internet use; and attitude towards health-related internet use. As theorised, the internet’s perceived usefulness was positively and significantly related to consumers’ use of health-related internet and attitude towards health-related internet use. But as hypothesised, perceived ease of internet use did not directly affect consumers’ use of health-related internet. Further, findings reveal that health-related internet use is estimated by perceived health risk than health consciousness.

Findings reveal that Sri Lankan managerial-level employees have a reactive health behaviour driven by the perceived health risk and the desire to seek online health information.