
Ruud JanssenSaxion University of Applied Sciences
Ruud Janssen
PhD
About
48
Publications
12,933
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581
Citations
Introduction
Skills and Expertise
Additional affiliations
June 2012 - January 2019
Windesheim University of Applied Sciences
Position
- Professor (Associate)
November 2005 - May 2012
Telematica Instituut / Novay
Position
- Scientific Researcher and Advisor
June 2003 - October 2005
Publications
Publications (48)
Abstract
Background:
Social assistive robots (SAR) have the potential to be useful as therapeutic interventions for people with dementia (PWD) by engaging them to interact with each other, producing a calming effect, and providing companionship, motivation and enjoyment (Mordoch, 2013; Valenti et al., 2015).
Since 2010 a shift has occurred from...
Involvement of people with dementia is not self-evident. The aim of this study was to gain insight into the ways in which people with dementia participated in developing the DecideGuide, an interactive web tool facilitating shared decision-making in their care networks.
An explanatory case study design was used when developing the DecideGuide. A se...
Purpose: The aim of this study was at gaining insight into the participatory design approach of involving people with dementia in the development of the DecideGuide, an interactive web tool facilitating shared decision-making in their care networks.
Method: An explanatory case study design was used when developing the DecideGuide. A secondary analy...
Mental health care is increasingly given at a distance, supported by technology. In this article, we focus on whether care, when technology comes in, still counts as good care. Therefore, we looked into a mental health nursing telecare practice for patients that live at home. The telecare team offers 24/7 unplanned webcam contact. We observed and i...
Health care insurers play a vital role in the implementation of eHealth and other care innovations within the health care sector. Yet, very little is said in the literature about how innovations are being evaluated by insurers, and what criteria are being used to do so. This paper describes the results of a case study into the evaluation process an...
Telecare is increasingly becoming a part of nursing care, and also in mental health care. In this paper, we study the effects telecare has on nursing care, by showing the first results of research on care by webcam for SMI (severely mentally ill) patients who live at home. Based on ethnographic fieldwork, we show how the nursing practice is altered...
An interactive web tool has been developed for facilitating shared decision-making in dementia-care networks. The DecideGuide provides a chat function for easier communication between network members, a deciding together function for step-by-step decision-making, and an individual opinion function for eight dementia-related life domains. The aim of...
This paper presents the work in progress for the Double Medication Check project. The aim of this project is to provide an IT-supported solution for the Double Medication Check (DMC). The need for DMC is pressing. Failures are being made during the dispense of medicines, which costs lives and increases the costs of health care. The practice of DMC...
This paper presents the findings of an exploratory study into challenges and dilemmas faced by mental health care professionals when implementing and applying videoconferencing with their clients. Focus was on two different forms of outreaching mental health care: intensive psychiatric family therapy (IPFT) and flexible assertive community treatmen...
eHealth applications hold many promises, for instance to improve the quality of health care, to increase its accessibility, or to reduce its cost. Yet, many eHealth innovations never reach the stage where they get embedded into routine health care. This is due in part to a lack of evidence that these innovations indeed deliver what they promise. Fo...
Many eHealth innovations never get beyond the project phase. Initiating a viable business model in an early stage of the development of eHealth innovations enhances the chance of structural embedding the innovations in routine health care. This paper presents the early stages of business model development for an innovative IT supported home care sy...
The aim of this study is to identify design issues (both weaknesses and strengths) that should be considered for designing a user-friendly design of an interactive web tool that facilitates shares decision making in care networks of people with dementia. Our research questions are: 1) What design issues can be identified? and 2) What is the unique...
eHealth applications hold many promises, for instance to improve the quality of health care, to increase its accessibility, or to reduce its cost. Yet, many eHealth innovations never reach the stage where they get embedded into routine health care. This is due in part to a lack of evidence that these innovations indeed deliver what they promise. Fo...
eHealth solutions create opportunities for improving efficiency and quality in health care. Still many eHealth innovations never get beyond the project phase. A business model approach can help eHealth entrepreneurs and innovators to bridge the gap between Buzz (ICT as a promise for better care) and Business (viable eHealth services and business mo...
Maintaining a proper lifestyle is important for chronic kidney disease patients. This study investigates whether an online lifestyle diary supplementary to the support received in the outpatient clinic can help patients to get to such a lifestyle. A total of 33 participants expressed their willingness to participate in the study. However, 11 of the...
eHealth applications hold many promises, for instance to improve the quality of health care, to increase its accessibility, or to reduce the cost. Yet, many eHealth innovations never reach the stage where they get embedded into routine health care. This is due in part to a lack of evidence that these innovations indeed deliver what they promise. Fo...
Objective: People suffering from dementia run the risk of getting lost when going for a planned or unplanned walk. TalkMeHome is a new service in the making, which will be available to care professionals to guide people with mild dementia home using a GPS-enabled smartphone. The aim of the present study is to gain first insights into the effectiven...
This paper documents a study into the challenges for mobile workers. The main goals of the study were, firstly, to identify the consequences and challenges of mobile work – particularly with respect one's ability to stay up-to-date ("in sync") and connected ("in touch") with his or her distant colleagues; and secondly, to define guidelines to help...
In this article a set of requirements for the design of a personal document management system is presented, based on the results of three research studies (Bondarenko, [2006]; Bondarenko & Janssen, [2005]; Bondarenko & Janssen, [2009]). We propose a framework, based on layers of task decomposition, that helps to understand the needs of information...
In this article, we present the results of a study that systematically explored “externalized knowledge” in the context of office work. The aim of the study was to investigate what knowledge information workers externalize into their physical environment (e.g., when shuffling or relocating paper documents on their desks) and how this knowledge is “...
In this paper we describe the application of triad elicitation as an ethnographic research method. Triad elicitation was used as an explorative in-situ data collection method during a study into the handling of paper documents by information workers. Our results show that triad elicitation is a powerful method that delivers rich, well-structured, a...
We studied information overload among senior managers in an industrial company. We used the critical incident collection technique to gather specific examples of information overload and coping strategies. We then used textual interpretation and the affinity diagram technique to interpret the interviews and to categorize our respondents, the critic...
Information overload is not a clear-cut concept. To understand the concept we studied knowledge workers in their organizational context applying different design methods. These methods are increasingly used to inspire designers in designing technology solutions. However, for understanding ambiguous concepts they are less common. We compared critica...
In the contemporary information-saturated world, there is a need for an easier, faster, and more social way to keep office workers updated and better aware of surrounding activities. Today's information management systems tend to consume time rather than simplify information sharing.The Vista system tries to solve this problem. It is designed to be...
In this paper the results of a two-year ethnographic study of the personal document management of 28 information workers is described. Both the paper and digital domain were taken into account during the study. The results reaffirmed that document management is strongly related to task management. Digital tools do not adequately support two importa...
In this paper the results of a two-year ethnographic study of the personal document management of 28 information workers is described. Both the paper and digital domain were taken into account during the study. The results reaffirmed that document management is strongly related to task management. Digital tools do not adequately support two importa...
The central theme of this paper is the scientific viewpoint taken for understanding behavioral processes. Two classical viewpoints are formulated by Dennett (the intentional stance) and Tinbergen (Tinbergen’s four questions). In this paper we argue that the two different viewpoints are linked to the two different processes that underlie complex beh...
Image quality research traditionally focuses on the subjective measurement, prediction, or improvement of image quality. The fundamental question of what image quality is, however, has been given surprisingly little attention. In this paper we present a theoretical framework for understanding image quality that is based on a four-point philosophy....
Images are a powerful, efficient means for communicating information, spurring advances in technologies underlying image capture, transfer, storage, and display. This book looks at metrics and methods for predicting image quality based on human visual and cognitive information-processing capabilities.
We present a concept for image quality that is based on a definition of quality in terms of the degree to which something satisfies the requirements imposed on it. An answer to the question what image quality is, must therefore necessarily include answers to the questions: what are images, what are images used for, and what are the requirements whi...
An important stage in visual processing is the quantification of optical attributes of the outside world. We argue that the metrics used for this quantification are flexible, and that this flexibility is exploited to optimise the discriminative power of the metrics. We derive mathematical expressions for such optimal metrics and show that they exhi...
We present algorithms for predicting the quality of color reproductions of natural scenes. The algorithms are based on a three-point concept for image quality: (1) images are carries of visual information about the outside world and the objects located in it, (2) images are used by the visual and cognitive systems to reconstruct and interpret the o...
We present algorithms for predicting the usefulness and naturalness of color reproductions of natural scenes. The algorithms are based on a computational model of the stages that lead to an observer's impression of the usefulness and naturalness of an image. These stages are (1) the perception, or internal quantification, of color; (2) the construc...
We interpret human-system interaction as a sequence of information-processing operations. According to computational cognition (Newell, 1990; Simon & Kaplan, 1989) and computational vision (Marr, 1982), information processing should be studied at three different levels of abstraction, that is, at the knowledge level, at the level of algorithm, and...
Using an "infornation-processing" approach we give a semantic description of image quality. Experimental evidence for this description, which allows one to meaningfully characterize the quality of an image as the degree to which the image can be successfully exploited by the observer, will be discussed.
In this contribution we discuss image quality in the context of the visuo-cognitive system as an information-processing system. To this end, we subdivide the information-processing as performed by the visuo-cognitive system into three distinct processes: (1) the construction of a visual representation of the image, (2) the interpretation of this re...
Vision can be regarded as 'inverse optics', i.e., the process in which measured characteristics of an optical image of the environment are used to reconstruct the material properties of this environment. Depending on the type of measurement that is being performed, flexibility of the metric upon which the measurement results are represented can be...
In this study an attempt is made to define the concept of image quality at a semantic level. Central to the approach pursued here is the supposition that image quality is determined to a considerable extent by the characteristics of the visual system as an information processing system, and the the results of visual processing, i.e., an internal vi...
The detection and localisation of edges play a central role in early vision. Since the results of these processes constitute the basis for all subsequent visual processing, the accuracy with which edge locations can be represented internally is a limiting factor for vision in general.
In this study the concept of edge localisation uncertainty is in...
In this contribution we will discuss image quality in the context of the visuo-cognitive system as an information-processing system. To this end, we subdivide the information-processing as performed by the visuo-cognitive system into three distinct processes: (1) the construction of a visual representation of the image, (2) the interpretation of th...