Evaluation of common input devices for web browsing: mouse vs touchpad vs touchscreen

Andrej Maleckar, Matjaž Kljun, Peter Rogelj, Klen Čopič Pucihar
University of Primorska, FAMNIT, Glagoljaška 8, Koper, Slovenia

Abstract: With the ever increasing connectivity to the Internet the use of the web has spread from static environments of desktop computers to mobile context where we interact with the web though laptop computers, tablet computers, mobile phones and wearable devices. Recent studies have shown that young people access the web using various devices and input techniques and spend on average more than 20 hours a week on the web. In this paper we plan to investigate which input technology is most usable or preferred for performing different tasks on the web. We decided to compare and evaluate the usability of the three most used input devices for web browsing, namely: a computer mouse and a touchpad on a laptop, and a touchscreen on a smartphone. For this purpose we have built a custom web page where users had to perform seven common tasks on web: open a URL address, copy/paste a URL address, copy/paste text, scroll up-down, scroll left-right, zoom in the context of a web page, and navigate a map. The results show that the mouse is still a preferred input device with shortest completion times, followed by the touchscreen interface even if it performed slower at some tasks compared to touchpad, which was marked as least preferred.


Full paper: link

Improving the usability of online usability surveys with an interactive Stripe scale

Matevž Pesek, Alja Isakovic, Gregor Strle, Matija Marolt
University of Ljubljana, Faculty of Computer and Information Science, Laboratory for Computer graphics and Multimedia, Večna Pot 113, 1000 Ljubljana, Slovenia

Abstract: The paper introduces Stripe, an interactive continuous scale for online surveys that makes it easy to compare multiple answers on a single screen. The Stripe is evaluated as an alternative to the n-point Likert scale, which is commonly used in online usability questionnaires like the System Usability Scale (SUS). The paper presents the results of a user study, which confirmed the validity of results gained with the proposed Stripe interface by applying both the Stripe and the Likert interface to an online SUS questionnaire. Additionally, the results of our study show that the participants favor the Stripe interface in terms of intuitiveness and ease of use, and even perceive the Stripe interface as less time consuming than the standard Likert scaled interface based on radio buttons.


Full paper: link

Redesign of Slovenian Avalanche Bulletin

Vanja Blažica, Janez Jaka Cerar, Aleš Poredoš
Slovenian Environment Agency, Vojkova 1b, 1000 Ljubljana, Slovenia

Abstract: We present the redesign of the Slovenian avalanche bulletin, published regularly during the winter season to warn against avalanche danger and to provide specific information for advanced users. The former version included an estimation of danger on a scale from one to five with supporting text for the whole country, while the new one offers an additional graphical description, specified for several geographical regions. The redesign profoundly influenced the work of avalanche forecasters by introducing a new interface, additional input and database storage. At the same time, users welcomed the additional information, international comparability and user friendliness of the new bulletin.


Full paper: link

Designing visual interface for nutrition tracking of patients with Parkinson’s disease

Peter Novak, Barbara Koroušić Seljak, Franc Novak
Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia

Abstract: In this paper, we describe the design of a visual interface of a mobile a mobile app for tracking nutrients and foods consumed by patients with Parkinson’s disease. The interface should enable the patients to recognize objects on the screen, easily perceive their function and interact with them thus providing an efficient way of entering the dietary intake data. The app has been validated by five patients and the preliminary results are encouraging.


Full paper: link


3D serious games for Parkinson’s disease management

Bojan Blažica, Franc Novak, Anton Biasizzo
Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia
Ciril Bohak
Faculty for Computer and Information Science, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia

Abstract: The aim of the article is to show how off-the-shelve equipment can be used to develop serious games for an affordable tele-medicine solution for Parkinson’s disease management. Two games have been developed aimed at assessing and training patient’s reach of upper limbs (using Kinect v2) and fine motoric skills of fingers (using Leap motion). The games collect player data in terms of score achieved and full kinematics of movement during gameplay. The data is stored online and made available to therapists and doctors through a secure connection. The games have been tested with patients within the Soča rehabilitation institute as well as at their homes.


Full paper: link


Remote Interaction in Web-Based Medical Visual Application

Ciril Bohak, Primož Lavrič, Matija Marolt
Faculty for Computer and Information Science, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia

Abstract: In this paper we present a novel integration of four remote collaboration modalities into an existing web-based medical data visualization framework: (1) visualization data haring, (2) camera view sharing, (3) data annotation haring and (4) chat. The integration of remote collaboration modalities was done for two reasons: for getting the second opinion on diagnosis or for getting a diagnosis from the remote medical specialist. We present an integration of these modalities and a preliminary evaluation by the medical expert. In conclusion we show that we are on the correct track of integrating collaboration modalities into the visualization framework.


Full paper: link

HCI-IS 2016 Schedule

Part 1 (14.00 – 16.00)

  • 14.00 – 14.15 – Opening event
  • 14.15 – 14.30 - Remote Interaction in Web-Based Medical Visual Application (Ciril Bohak, Primož Lavrič, Matija Marolt)
  • 14.30 – 14.45 - 3D serious games for Parkinson’s disease management (Bojan Blažica, Franc Novak, Anton Biasizzo, Ciril Bohak)
  • 14.45 – 15.00 - Designing visual interface for nutrition tracking of patients with Parkinson’s disease (Peter Novak, Barbara Koroušić Seljak, Franc Novak)
  • 15.00 – 15.15 – Short break
  • 15.15 – 15.30 - Redesign of Slovenian Avalanche Bulletin (Vanja Blažica, Janez Jaka Cerar, Aleš Poredoš)
  • 15.30 – 15.45 - Improving the usability of online usability surveys with an interactive Stripe scale (Matevž Pesek, Alja Isakovič, Gregor Strle, Matija Marolt)
  • 15.45 – 16.00 - Evaluation of common input devices for web browsing: mouse vs touchpad vs. touchscreen (Andrej Malečkar, Matjaž Kljun, Klen Čopič Pucihar, Peter Rogelj)

Coffee break (16.00 – 16.30)

Part 2 (16.00 – 17.45)

  • 16.30 – 16.45 - Wizard of Oz experiment for Prototyping Multimodal Interfaces in Virtual Reality (Blaž Gombač, Damir Deželjin, Matej Zemljak, Klen Čopič Pucihar, Patrik Širol, Matjaž Kljun)
  • 16.45 – 17.00 - Towards the improvement of GUARD graphical user interface (Žiga Kopušar, Franc Novak)
  • 17.00 – 17.15 - Towards affordable Mobile Crowd Sensing device (Gal Pavlin, Marko Pavlin)
  • 17.15 – 17.30 - I was here: a system for creating augmented reality digital graffiti in public place (Erik Šimer, Matjaž Kljun, Klen Čipič Pucihar)
  • 17.30 – 17.45 - Interactive Video Management by means of an Exercise Bike (Jan Štrekelj, Branko Kavšek)

Conference closing

TETRACOM project: Personalized Nutrition Control Aid for Insulin Patch Pump – PerNuCAP

Project partners: Jozef Stefan Institute, Ljubljana and IPD Med d.o.o., Šentjernej

Diabetes is a chronic condition marked by high levels of glucose in the blood. In type 1 diabetes, the body completely stops producing any insulin, a hormone that enables the body to use glucose found in foods for energy. People with type 1 diabetes must daily receive insulin to survive. Insulin pump therapy offers efficient metabolic disorder control and represents a cost effective alternative to multiple daily insulin injections. Compared with ‘classical’ pumps, insulin patch pumps offer patients more freedom. They are the ‘next generation’ devices: discreet, smaller (the size of the patch) and a lot more convenient to wear. They allow patients to engage in everyday activities such as sport and even swimming.

The Insulin Patch Pump developed by IPD Med is designed for continuous insulin delivery according to personalized, pre-programmed plan. The device provides both basal and bolus modes of insulin delivery. It consists of a reusable shell that attaches to a disposable unit. The device is attached to a body with an adhesive patch. The shell contains a battery powered microprocessor with corresponding controls, alerting devices and RF circuitry. The disposable unit includes a pumping mechanism, proprietary insulin reservoir and COTS/OEM infusion set. An RF remote control unit is provided to manage and program the device.

The disposable unit represents only 0.5% of the total price, which is a considerable advantage in comparison with existing devices on the market. However, even more significant step forward is expected by providing the users with the possibility to access OPEN Platform For Clinical Nutrition developed by Jozef Stefan Institute (JSI). OPEN is a web-based application that supports food and physical activity recording and diet planning. OPEN enables online interaction between a dietitian and his (her) patient. To support its use in different countries, OPEN allows translation of the user interface into other languages as well as the use of any food composition dataset that complies with Food data structure and format standard (BS EN 16104:2012). OPEN refers to international, evidence-based dietary recommendations, which can be modified by the dietitian to suit the needs of individuals.

In connection with OPEN platform, the Personalized Nutrition Control Aid for Insulin Patch Pump will provide the user simple means to obtain detailed data on his/her nutrition intake needed for the prediction of insulin dosing profile. Personalized user interface will help the user to determine carbon hydrate intake with higher accuracy than currently established methods. Consequently, the insulin therapy is improved by reducing the risk of hypoglycemia caused by improper data input. The aid will also allow the user to keep the food diary and provide access to extensive food lexicon. Personalized user interface is currently under construction. Its concept closely resembles a similar one designed as a mobile app in the frame of PD_Manager, which aims of collecting data about nutrition in patients with Parkinson’s disease.

IPDmed insulin patch pump and OPEN platform

Since the designed Insulin Patch Pump is classified as class IIb medical device according to MDD 93/42/EEC, in-depth risk management including usability testing must be performed. In this regard, extensive risk analysis has been performed by IPD Med, while JSI, who has proven expertise in human-computer interaction has prepared the assessment usability test plan in accordance with Standard IEC 62366 (Medical devices – Application of usability engineering to medical devices). Usability testing with a target group of volunteers is planed for September. While work on the project is still running and in accordance with the contract between JSI and IPD Med will continue until the end of October 2016, the current results of the TTP supported by TETRACOM represent an important step toward TRL 7.

View on the Tetracom project website or download poster here.