Browsing by Author "Cristescu, Irina"
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- ItemA New Digital Solution for Promoting of Romanian Literary Patrimony(Romanian Academy-Centre for Transylvanian Studies, 2019-03-31) Băjenaru, Lidia; Gavrilă, Veronica; Cristescu, Irina; Iordache, Dragoş Daniel; Dobre, CiprianA way of highlighting and promoting the most important and significant components of the national heritage is to harness them through Internet-based technologies. This paper presents the proposed digital solution for the promotion and preservation of collections of information from the Romanian literary patrimony using intelligent digital solutions for the extraction and systematization of knowledge. This digital solution, a platform, will offer advanced, intelligent semantic search and analysis services and prediction forms concerning Romanian literature. This paper presents several important platforms, systems and projects that are linked to the Literary Heritage. Then, a comparative analysis of the functionality, limitations and opportunities of the most relevant online platforms is presented, followed by the description of the main features of INTELLIT platform.
- ItemAnalyzing the factors affecting the quality of IoT-based smart wearable devices using the DANP method(ICI Publishing House, 2019-12-20) Balog, Alexandru; Băjenaru, Lidia; Cristescu, IrinaThis paper proposes the DANP (DEMATEL-based Analytic Network Process) method so that the factors that affect the quality of IoT (Internet of Things)-based smart wearable devices can be adequately assessed. The proposed method helps to identify and visualize the importance of certain factors (dimensions and criteria), the causal relationship among the factors, the mutual influence upon each other, and their influential weights. A numerical example was presented to illustrate the feasibility and effectiveness of the proposed method. The results of this study demonstrated that the quality dimensions can be divided into a causal group (the technical and ergonomic dimensions) and an effect group (the functional and symbolic dimensions). The functional dimension proved to be the most important factor and the most important core problem to be solved. The most influential driving factor was the ergonomic dimension. The results of this study provide insights into critical design criteria to better meet the users’ needs and can be used by manufacturers to develop strategies for improving the quality of IoT-based smart wearable devices, in a priority order.
- ItemAsistent software de evaluare a utilizabilității aplicațiilor web din domeniul medical(ICI Publishing House, 2019-03-31) Marinescu, Ion Alexandru; Cristescu, Irina; Iordache, Dragoș DanielAccessing information and medical services is a fundamental human right, whether it is provided in the online or in the classical environment. The widespread of internet use has produced a change in the users’ preferences, shifting the attention towards electronic health care or monitoring services provided through medical Web applications. In this context, developers must provide quality information products capable of offering a proper functional framework for accomplishing specified tasks, with a focus on eliminating barriers that may hinder access to people with diminished physical or cognitive capabilities. As the ageing process brings substantial changes in the optimum functioning of a person, people over 65 years old are considered a vulnerable group, prone to isolation. The decline in vision, hearing, memory, cognitive or motor impairment, often leads to a difficult relationship with technology. Hence, the need to design interfaces that meet the specific needs and requirements of this category of users. This paper highlights the implementation phase and the main functions of a software tool dedicated to assist the usability evaluation of healthcare Web applications, in the case of elderly people. This tool supports evaluators in the registration of usability problems and in the collaborative consolidation of the results obtained from the evaluation process.
- ItemEvaluating influential factors in WHOQOL-BREF instrument using the DEMATEL method(IEEE, 2019) Balog, Alexandru; Băjenaru, Lidia; Cristescu, Irina; Tomescu, MihaelaThis paper proposed the DEMATEL method to evaluate the influential factors in WHOQOL-BREF instrument. The proposed method helped to identify and visualize the importance of factors, the causal relationship among the factors, and the mutual influence between them. A numerical example was presented to illustrate the applicability of DEMATEL. The results demonstrated that the WHOQOL-BREF factors can be divided into a causal group (physical and environment) and an effect group (psychological and social). The psychological domain was the most important factor and the most important core problem to be solved. The most influential driver factor was the environment, followed by the physical domain. The results can be used to develop strategies to improve quality of life in each health domain, in a priorities order.
- ItemHeterogeneity of students' perceptions of e-learning platform quality: a latent profile analysis(2019) Cristescu, Irina; Balog, AlexandruE-learning platform quality is an important subject in the community of researchers and practitioners. Quality assessment approaches have different perspectives and differ in many respects, such as: objective, target groups and methods used. In recent years, the utility of advanced person-centered methods has become increasingly obvious. Person-centered approaches assume that samples come from heterogeneous populations and focus on identifying unobservable subpopulations that include individuals or similar cases. In this category are included both traditional techniques (e.g. cluster analysis) and advanced techniques (e.g. Latent Class Analysis, Latent Profile Analysis). In the present study, the e-learning platform quality is a general concept defined through three dimensions. The overall perception of students regarding the e-learning platform quality is based on the assessment of the following dimensions: e-learning system quality, information quality, and service quality. The aim of this paper is to extend previous research by adopting a person-oriented approach (e.g. LPA-latent profile analysis) and examine the heterogeneity of students' perceptions of e-learning platform quality. A sample of 385 students from five Romanian universities participated in the study. The data was analyzed with Mplus package version 7.4. The results of LPA revealed the presence of three profiles, reflecting different levels of e-learning platform quality perceptions: low, moderate, and high. The resulting profiles are distinct with respect to e-learning system quality, information quality, and service quality. A one-way multivariate analysis of variance (MANOVA) showed that the perceptions of e-learning platforms quality differed significantly across the three profiles. Finally, the article presented the practical implications of the results. The results contribute, on one hand, to identifying groups of students who shared similar perception patterns when dealing with e-learning platform quality. On the other hand, the results are useful in developing a strategy of improving the e-learning platforms by including the specific needs of each student categories identified.
- ItemLatent profile analysis in health research: a case study(IEEE, 2019) Ianculescu, Marilena; Balog, Alexandru; Cristescu, Irina; Iordache, Dragoș Daniel; Băjenaru, LidiaIn recent years, quantitative methods and psychometric analyses have been an integral component in the process of developing and evaluating health measurement instruments. The objective of the present study is to demonstrate the potential and usefulness of the person-centered approach in the field of e-health by identifying groups of patients with similar characteristics. Based on a sample of data and using latent profile analysis (LPA) in Mplus 7.4, four profiles (groups) that differ between themselves both quantitatively (level) and qualitative (shape) were identified. A one-way multivariate analysis of variance (MANOVA) showed that there are significant differences between the four profiles.
- ItemMethodological Aspects for the Development and Validation of Measurement Scales in Health(ICI Publishing House, 2019-06-30) Balog, Alexandru; Băjenaru, Lidia; Cristescu, IrinaIn the field of health, many measurement scales have been developed and validated to evaluate the health status, psychological well-being and health-related quality of life. For the purpose of selecting a particular measurement scale or for developing new measurement scales (instruments), a coherent approach, including evaluation criteria, procedures, and evaluation techniques, is needed. Based on the analysis of the literature, the authors presented a set of criteria for evaluating the measurement scales and proposed a methodology for the development and validation of the measurement scales in the health domain. The methodology includes five steps: conceptualization, measure development, model specification, scale evaluation and refinement, scale validation. The evaluation criteria and methodology provide a general framework that can be used in academic research and clinical research to carry out empirical studies on the development and validation of measurement scales.
- ItemNeeds and preferences of elderly patients regarding AAL systems: a latent profile analysis(IEEE, 2020) Balog, Alexandru; Băjenaru, Lidia; Cristescu, Irina; Herghelegiu, Anna MarieThe requirements for the development of Ambient Assisted Living (AAL) systems are influenced by individual needs, preferences, and expectations. Due to the fact that elderly patients have different attitudes towards using new technology, their profiles may not necessarily show equal needs, interests, and preferences. To investigate this heterogeneity, the study aimed to identify groups with distinct preferential profiles in a sample of elderly patients. Data gathered by questionnaire in the vINCI project were used in a Latent Profile Analysis (LPA). Composite variables related to needs, preferences, and expectations were used to characterize the profiles. Results showed that the two-profile model was the best fit and indicated a high degree of classification accuracy. The two profiles significantly differed from each other. The findings of this study underline the relevance of examining the differences between patients' needs and preferences and emphasize the importance of considering the patterns of different types of needs and preferences for AAL technology, an area that needs further research. The results were used to develop requirements for the vINCI system.
- ItemQuality in use measures for an AAL system for older adults(IEEE, 2020) Cristescu, Irina; Balog, Alexandru; Băjenaru, LidiaAmbient Assisted Living (AAL) aims to improve the quality of life (QoL) of people by assisting them in daily activities through the use of information technology. The quality of AAL systems can be evaluated by measuring quality in use attributes (when the product is in real or simulated use). In doing so, appropriate quality characteristics have to be defined taking into consideration the intended use of the systems. Thus, the importance of specifying and evaluating the relevant quality characteristic using validated and widely accepted measures. This paper focused on presenting a set of specific quality measures adapted to evaluate the quality in use of an AAL platform that monitors and supports older adults.
- ItemSmart citizen – a participatory co-creator for enhancing online public services(IEEE, 2019) Ianculescu, Marilena; Bica, Ovidiu; Balog, Alexandru; Cristescu, IrinaThe smart citizen is a citizen not only accustomed with the daily use of digital technology, but one who feels empowered and entitled to actively participate at designing and improving the online public services in his direct benefit and also for his city advantage. Smart technologies have become a compulsory driver for establishing a proper foundation inside a smart city. This paper focuses on presenting the smart citizen as an enabler of better online public services in the context of a smart city. For illustrating his participative role, a proposed functional architecture for enhancing online public services is put in.
- ItemSmartwatch adoption: a conceptual model for older adults(IBIMA, 2020) Cristescu, Irina; Balog, Alexandru; Băjenaru, LidiaIn the context of a fast aging population, the usage of smart wearables responds to the increasing needs for healthcare and assistance in the case of older adults. The purpose of this study is to propose a conceptual model for adopting smartwatches by older adults. The proposed model includes factors that have been highlighted in prior studies, but have never been used altogether in a TAM model. The identified factors are defined and the corresponding hypotheses concerning the relationship between the factors that contribute to the adoption of smartwatches among older adults are formulated. Also, the analytical procedures that will be used to test the conceptual model are presented.
- ItemThe citizen and the challenges of the Information Society(ICI Publishing House, 2019-03-31) Petre, Ionuț; Cristescu, IrinaFrom a digital perspective, the challenge of the 2018-2020 society possesses a digital skill background that allows not only to fit into a particular job, but also to engage in the long-life education and training system for individuals. Digital skills include: 1) the ability to search, collect, process information and use it in a critical and systematic way; 2) The use of tools to produce, present and understand complex information; 3) The ability to access, search and use Internet-based services and 4) using the information society technology to support critical thinking, creativity and innovation. To be digitally competent implies the possession of knowledge, abilities and skills appropriate for information and communication technology. The digital skill is one of eight key competences, implying a reliable and critical use of the entire ICT range in all areas. Key competences are considered all equally important, because each of them can contribute to a successful life in the knowledge society. This study aimed at highlighting the challenges of the information society and presenting a model of competences that enables citizens to cope with the digital challenges.