Opening the black box: Managers’ perceptions of IS project success mechanisms

In general, works on information system (IS) project success focus on either project success factors or project success criteria, neglecting the relationships (mechanisms) between these concepts. Accordingly, it is mainly unclear how success factors actually contribute to success criteria. We attempt to illuminate this black box by conducting semi-structured qualitative interviews with experienced IS project managers by applying Repertory Grid and Laddering. Our exploratory study yields numerous success mechanisms, revealing project-related motivation to be the central hub in the factors-criteria network. Factors preceding project-related motivation such as transparency, certainty, and management attention are described.     

Electronic calculators: which notation is the better?

Tests of an Algebraic Notation Calculator and a Reverse Polish Notation Calculator showed the latter to be superior in terms of calculation speed, particularly for subjects with a technical background. The differences measured were shown not to be due to differences in calculation speed of the calculators nor to differences in dexterity between the subjects.     

Visualization of curvature plots and evaluation of fairness: an analysis of the effect of ‘scaling’

Changing the aspect-ratio (scale) of a graphical plot significantly affects the “messages” getting across to a viewer. This is true also for curvature plots and other graphs currently used in Curve & Surface Modeling to evaluate fairness. In particular, the sharp corners appearing in such graphs, employed as local fairness indicators by current practices, are significantly affected by nonuniform scaling. A detailed study of this phenomenon is presented offering specific guidelines for correctly “reading” curvature plots.     

ICT implementation in the health-care sector: effective stakeholders’ engagement as the main precondition of change sustainability

As modern information and communication technologies (ICT) now offer new possibilities for improving almost every aspect of health care, their implementation is a very relevant and fast accelerating process around Europe and internationally. The processes themselves vary greatly from scattered single initiatives of various IT solutions to large national programmes. Often treated as purely technical in nature, ICT implementation in health care should gravitate towards the “softer/complex” i.e. people-related issues end of the change. The approach taken by the Informing Healthcare programme in Wales broadens understanding on the value that engagement of stakeholders can bring to the process.

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Adverse consequences of access to individuals’ information: an analysis of perceptions and the scope of organisational influence

Organisations are highly interested in collecting and analysing customer data to enhance their service offerings and customer interaction. However, individuals increasingly fear how such practices may negatively affect them. Although previous studies have investigated individuals’ concerns about information privacy practices, the adverse consequences people associate with external actors accessing their personal information remain unclear. To mitigate customers’ fears, organisations need to know which adverse consequences individuals are afraid of and how to address those negative perceptions. To investigate this topic, we conducted 22 focus groups with 119 participants. We developed a comprehensive conceptualisation and categorisation of individuals’ perceived adverse consequences of access to their information that includes seven types of consequences: psychological, social, career-related, physical, resource-related, prosecution-related, and freedom-related. Although individuals may limit their interactions with an organisation owing to consequences they associate with both the organisation and other actors, organisations can apply preventive and corrective mechanisms to mitigate some of these negative perceptions. However, organisations’ scope of influence is limited and some fears may be mitigated only by individuals themselves or government regulation, if at all.     

Farmers’ perceptions of exoskeleton use on farms: Finding the right tool for the work(er)

Despite the promising impact that exoskeletons might have on reducing MSDs, on-farm investigations of exoskeletons are limited. This study explored farmers' perceptions of the feasibility and practicality of exoskeleton use in Canadian prairie grain and livestock farm operations. Fifteen farm workers (age 25–70 years) used a passive back-supporting exoskeleton during standardized and unique tasks at their own farms. They then participated in semi-structured interviews regarding their experiences during the trials, advantages and disadvantages of exoskeleton use, suggested improvements, and speculation about feasibility of exoskeleton use on farms. Interview analysis revealed seven overlapping and inter-related themes: ‘safety’, ‘comfort’, ‘jobs & timing’, ‘health’, ‘mobility’, ‘ease of use’, and ‘productivity’. Interviews showed diversity in farmers' perceptions of exoskeleton performance within these themes, demonstrating that successful implementation on farms will require alignment between the exoskeleton design, the users, and the tasks being performed. Findings can facilitate development of future designs as well as appropriate implementation strategies for the farm environment, with the ultimate goal of improving the health, quality of life, and productivity of farmers and workers facing similar ergonomic hazards.     

High-school students’ perceptions of the effects of non-academic usage of ICT on their academic achievements

We investigated high-school students’ perceptions of the relationship between non-academic information and communications technology (NA-ICT) use and academic achievements. A sample of 533 Israeli students responded to surveys on ICT use habits, achievements, and the relationship between the two. A negative correlation between reported NA-ICT use time and reported scores was found. The idea of the negative effect of NA-ICT use on achievements was accepted by the majority of students, regardless of their academic achievements. However, when asked about the effect that reducing NA-ICT use time might have on their own grades, the majority of students found on the middle levels of the school performance scale appeared to believe that limiting NA-ICT usage will help them improve their grades. In contrast, students found on both ends of the scale (high-achieving and low-achieving alike) did not necessarily see a decrease in NA-ICT usage as beneficial. We discuss a possible explanation relying on Covington’s (1992) Self Esteem Theory and the entailed practical implications of our study.     

Mixed reality experiences in museums: Exploring the impact of functional elements of the devices on visitors’ immersive experiences and post-experience behaviours

This paper contributes to the debate on MR technology in the museum setting by investigating how and to what extent functional elements of the MR devices affect experiences and drive post-experience behaviours. It bridges several research gaps in MR investigation, demonstrating unexplored causal relationships between the functionality of MR devices and museum experiences and post-experience behaviours, which have been investigated separately. The research confirms that MR advances empower the museum's mission of heritage valorisation and education, which drive new immersive experiences and behaviours. It introduces insights to overcome technological limitations as a challenge for practitioners as well as a flourishing area of investigation.     

Strategy implications of IS planning: Executives’ perceptions on firm performance

This paper aims to explore the effect on business performance of both Information Technology (IT) and business strategy. All data were obtained form 294 IS executives in Greek Small-Medium Enterprises (SMEs) and analyzed using Ordinal Regression Analysis. As the results of this survey indicate, SMEs cannot increase business value without strategic planning. IT executives should be aware of IT issues because this can be an obstacle for the organization and will prevent them achieving their planning goals and increasing the value of the business.     

Corroborating students’ self-reports of source evaluation

Students were asked to report their typical practices with regard to source evaluation using the Credibility Assessment Scale (CAS). Students’ reports were validated against behavioural and cognitive indicators of source evaluation. Specifically, while researching a social science prompt, students’ source use behaviours, related to text evaluation, were logged. Following task completion, students were asked to rank the trustworthiness of the information sources they accessed and to justify their rankings. The criteria students cited for rankings of text trustworthiness were considered to be cognitive-based indicators of source evaluation, and mapped onto CAS items. Limited correspondence was found between students’ reported engagement in verification-related behaviours and either the behaviours manifest during task completion or the criteria for source evaluation cited at post-task. At the same time, a correspondence was found among behavioural and cognitive aspects of source evaluation, within the context of a specific task. This study is unique in directly corroborating self-reported, behavioural, and cognitive measures of source evaluation and examining these within the context of a rich and naturalistic multiple text task. Implications for research and practice are discussed.     

Older adults’ perceptions of usefulness of personal health records

Electronic personal health records (PHRs) have the potential to both make health information more accessible to patients and function as a decision-support system for patients managing chronic conditions. Age-related changes in cognition may make traditional strategies of integrating and understanding existing (i.e., paper-based) health information more difficult for older adults. The centralized and integrated nature of health information, as well as the long-term tracking capabilities present in many PHRs, may be especially beneficial for older patients’ management of health. However, older adults tend to be late adopters of technology and may be hesitant to adopt a PHR if the benefits are not made clear (perceived usefulness). Toward the design of a useful PHR, a needs analysis was conducted to determine how people currently manage their health information, what they perceive as useful, and to identify any unmet needs. This paper describes two qualitative studies examining the health information needs of both younger and older adults. The first study used a 2-week diary methodology to examine everyday health questions or concerns, while the second study examined maintenance of health information and perceptions of PHRs through the use of a three-part interview. User’s perceptions of the usefulness of PHRs are provided as recommendations for the design of e-health technology, especially those targeted for older adult healthcare consumers. The results suggest that both older and younger adults would deem a PHR useful if it provides memory support in the form of reminders, provides tools to aid in comprehension of one’s health concerns, is interactive and provides automatic functions, and is highly accessible to authorized users, yet one’s information is kept secure and private.     

Adaptation of an automotive dialogue system to users’ expertise and evaluation of the system

Spoken dialogue systems (SDSs) can be used to operate devices, e.g. in the automotive environment. People using these systems usually have different levels of experience. However, most systems do not take this into account. In this paper, we present a method to build a dialogue system in an automotive environment that automatically adapts to the user’s experience with the system. We implemented the adaptation in a prototype and carried out exhaustive tests. Our usability tests show that adaptation increases both user performance and user satisfaction. We describe the tests that were performed, and the methods used to assess the test results. One of these methods is a modification of PARADISE, a framework for evaluating the performance of SDSs [Walker MA, Litman DJ, Kamm CA, Abella A (Comput Speech Lang 12(3):317–347, 1998)]. We discuss its drawbacks for the evaluation of SDSs like ours, the modifications we have carried out, and the test results.

Improving the evaluation process of students’ performance utilizing a decision support software

Neural Computing and Applications - During the last decades, educational data mining constitutes a significant tool, offering a first step and a helping hand in the prediction of students’...     

Integrated rough VIKOR for customer-involved design concept evaluation combining with customers’ preferences and designers’ perceptions

Customer-involved design concept evaluation (DCE) allows customers to take part in evaluating the design alternatives to get more popular design concept. Traditional customer-involved DCE methods still focus on the collection of customer responses and only consider cost and benefit characteristics of design criteria in multi-criteria decision-making (MCDM) based evaluation process. Few studies have customized the decision-making algorithms specifically aimed at customers’ preferences. This paper further explores the customers’ influences in the early stages of the product design development, and proposes a new rough number based MCDM model (i.e., VIKOR) incorporating customers’ preferences for design specifications along with designers’ perceptions for the characteristics of design criteria (cost and benefit) to perform concept evaluation under subjective environment, and this proposed method is named as integrated rough VIKOR (IR-VIKOR). The objective of this study is to identify the best design concept which maximizes the satisfactions of expectations from most customers as well as conforms to the characteristics of design criteria. Firstly, Shannon entropy is used to obtain the weightings and relative importance ratings of design criteria from the customers’ preferences. Secondly, the customers’ preferences for design attribute values, the importance ratings of design criteria and the characteristics of design criteria are combined together to define the ideal solutions to calculate the rough evaluation index of each design alternative in IR-VIKOR, and finally the ranking result is provided by IR-VIKOR to determine the best design concept. A practical design example is introduced to illustrate the evaluation process of this proposed method, and the empirical comparisons are further carried out to validate its superiority for DCE. Through the sensitivity analysis experiments including i) inside IR-VIKOR, and ii) between IR-VIKOR and other classical MCDM methods, the proposed method is proved to be a reliable and feasible customer-involved DCE approach.     

System analysts’ orientations and perceptions of system failure

System analysts approach tasks with different orientations to their actions. Likewise, system failures are perceived to be because of a variety of causes. A survey of 239 analysts is conducted to explore the similarities between these orientations and perceptions of failure reasons. The findings indicate that analysts’ perceptions of failure reasons and their approach to development fall along similar lines. This trait enables information system management to select project teams to help avoid failures. The variety of orientations needed for success can be chosen from within the organization or training of analysts can be targeted more effectively to consider missing elements based on current orientations.     

Evidential reasoning-based Fuzzy AHP approach for the evaluation of design alternatives’ environmental performances

With the growing general awareness of the need to protect the environment as well as the increasingly stringent regulatory requirements imposed by various national and cross-national bodies, manufacturers have to minimise the environmental impacts of their products. Environmental considerations have therefore become a new key criterion for evaluating design alternatives during the product development stage. To facilitate non-Life Cycle Assessment (LCA) experts, such as most product designers, in evaluating the design alternatives in terms of environmental friendliness, this paper introduces a decision-making mechanism that combines the multiple criteria decision making (MCDM) approaches with LCA methodology. This evidential reasoning-based approach is a fast-track and objective tool which ranks the available design alternatives according to their potential environmental impacts. The environmental impacts of design alternatives assessed by the LCA are used for the weight elicitation processes of the proposed approach. A case application is conducted to illustrate the use of the proposed method to evaluate the environmental performances of design alternatives.     

Molecular dynamics simulation of nanofluid’s flow behaviors in the near-wall model and main flow model

The flow behaviors of nanofluids were studied in this paper using molecular dynamics (MD) simulation. Two MD simulation systems that are the near-wall model and main flow model were built. The nanofluid model consisted of one copper nanoparticle and liquid argon as base liquid. For the near-wall model, the nanoparticle that was very close to the wall would not move with the main flowing due to the overlap between the solid-like layer near the wall and the adsorbed layer around the nanoparticle, but it still had rotational motion. When the nanoparticle is far away from the wall (d > 11 Å), the nanoparticle not only had rotational motion, but also had translation. In the main flow model, the nanoparticle would rotate and translate besides main flowing. There was slip velocity between nanoparticles and liquid argon in both of the two simulation models. The flow behaviors of nanofluids exhibited obviously characteristics of two-phase flow. Because of the irregular motions of nanoparticles and the slip velocity between the two phases, the velocity fluctuation in nanofluids was enhanced.     

IT managers’ vs. IT auditors’ perceptions of risks: An actor–observer asymmetry perspective

With the growing role of information technology (IT), many organizations struggle with IT-related risks. Both IT managers and IT auditors are involved in assessing, monitoring, and reporting IT risks, but this does not necessarily mean that they share the same views. In this study, we draw upon the actor–observer asymmetry perspective to understand differences in IT managers’ vs. IT auditors’ perceptions of risks. Through a quasi-experiment with 76 employees of a financial institution, we found that IT managers and IT auditors showed the expected actor–observer differences. Implications for both research and practice are discussed.     

Thermodynamic evaluation of the Germanium — Tellurium system

In order to optimize the binary Ge-Te system available experimental data were critically compiled from the literature. The cubic high-temperature β-phase and the rhomboedric room-temperature α-phase were described by a two-sublattice model with one kind of defect (vacancies on germanium sites). The room-temperature orthorhombic γ-phase was treated as a stoichiometric compound, as there is a lack of information about its solubility. The liquid phase was modelled by the the associate model with one kind of associate, namely ‘GeTe’. A set of thermodynamic parameters was obtained and the calculated phase diagram is presented.     

Policy makers’ perceptions on the transformational effect of Web 2.0 technologies on public services delivery

The growing participation in social networking sites is altering the nature of social relations and changing the nature of political and public dialogue. This paper contributes to the current debate on Web 2.0 technologies and their implications for local governance, identifying the perceptions of policy makers on the use of Web 2.0 in providing public services and on the changing roles that could arise from the resulting interaction between local governments and their stakeholders. The results obtained suggest that policy makers are willing to implement Web 2.0 technologies in providing public services, but preferably under the Bureaucratic model framework, thus retaining a leading role in this implementation. The learning curve of local governments in the use of Web 2.0 technologies is a factor that could influence policy makers’ perceptions. In this respect, many research gaps are identified and further study of the question is recommended.