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Rothkrantz, L.J.M. (author)
In this paper we present a new didactical model for open online learning using social media. Ideas underlying this model are discussed in recent literature. The innovative part of the model is that students are connected and cooperate via a social network of study friends for example via Facebook or Twitter. They inform each other about to be...
conference paper 2016
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Rothkrantz, L.J.M. (author)
Recent years many universities are involved in development of Massive Open Online Courses (MOOCs). Unfortunately an appropriate didactic model for cooperated network learning is lacking. In this paper we introduce inquiry based learning as didactic model. Students are assumed to ask themselves questions interacting with a learning text. The...
journal article 2015
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Rothkrantz, L.J.M. (author)
Current routing devices route an individual car driver from start to destination in the shortest time. In this paper we propose a routing algorithm, routing the whole population of car drivers in the shortest time. The algorithm is an adapted dynamic version of the shortest path algorithm of Dijkstra, taking care of current and future changing...
conference paper 2015
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Rothkrantz, L.J.M. (author)
It proves that many starting students at Technical Universities don’t have the required mathematical knowledge and abilities. This is caused by educational gaps at secondary schools, disinterest of students and a process of forgetting over time. At TUDelft a MOOC has been developed to train new students in mathematical calculus during the summer...
conference paper 2015
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Rothkrantz, L.J.M. (author)
Technically e-learning material can be downloaded from a PC environment to a mobile phone environment. But the context, environment, physical limitations of a mobile phone, sets limits to a mobile learning environment. The didactic model cannot be transferred usually from e-learning to mobile learning environment. In an experiment we test the...
conference paper 2015
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Rothkrantz, L. (author), Fitrianie, S. (author)
During major disaster events, human operators in a crisis center will be overloaded with a flood of phone calls. As an increasing number of people in and around big cities do not master the native language, the need for automated systems that automatically process the context and content of information about disaster situations from the...
conference paper 2015
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Fitrianie, S. (author), Rothkrantz, L.J.M. (author)
Innovations in mobile technology allow people to request route information on their smartphone to reach safe areas during emergency and disaster evacuations. In return, the affected people in the field can send their observation reports, e.g. using a dedicated icon-based disaster language. However, given the turbulent nature of disaster...
conference paper 2015
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Rothkrantz, L.J.M. (author), Fitrianie, S. (author)
During major disaster events, human operators in a crisis center will be overloaded with under-stress a flood of phone calls. As an increasing number of people in and around big cities do not master the native language, the need for automated systems that automatically process the context and content of information about disaster situations from...
conference paper 2015
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Rothkrantz, L.J.M. (author)
The use of sensor networks has been proposed for military surveillance and environmental monitoring applications. Those systems are composed of a heterogeneous set of sensors to observe the environment. In centralised systems the observed data will be conveyed to the control room to process the data. Human operators are supposed to give a...
journal article 2014
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Scholte, K. (author), Rothkrantz, L.J.M. (author)
Many services provide weather forecasts, including severe weather alerts for the marine. It proves that many ships neglect the warnings because they expect to be able to handle the bad weather conditions. In order to identify possible unsafe situations the Coast Guard needs to observe marine vessel traffic 24 hours, 7 days a week. In this paper...
conference paper 2014
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Rothkrantz, L.J.M. (author), Scholte, K. (author)
The goal of our research is the design and implementation of an automated surveillance system based on an Automatic Identification System (AIS). The AIS system enables operators to monitor ship movements. Human observation 7 days in a week, 24 hours a day requires a lot of resources. There is a need to support human operators using an automated...
conference paper 2013
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Rothkrantz, L.J.M. (author)
During recent disasters such as tsunami, flooding, hurricanes, nuclear disaster, earthquake people have to leave their living areas for their own safety. But it proves that some people are not informed about the evacuation, or are not willing or able to leave or don’t know how to leave the hazardous areas. The topic of the paper is how to adapt...
conference paper 2013
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Chi?u, A. (author), Rothkrantz, L.J.M. (author)
book chapter 2012
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Popa, M. (author), Koc, A.K. (author), Rothkrantz, L.J.M. (author), Shan, C. (author), Wiggers, P. (author)
Surveillance systems in shopping malls or supermarkets are usually used for detecting abnormal behavior. We used the distributed video cameras system to design digital shopping assistants which assess the behavior of customers while shopping, detect when they need assistance, and offer their support in case there is a selling opportunity. In...
conference paper 2011
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Rothkrantz, L.J.M. (author), Datcu, D. (author)
In recent years many systems for distance learning have been developed. Even though students have access to learning material any time and any place, current tools for e-learning still have their limitations. The main shortcoming, compared to real life learning is the limited opportunity for human like interaction between student, teacher and...
journal article 2010
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Rothkrantz, L.J.M. (author)
In recent years many systems for distance learning have been developed. Even though students have access to learning material any time and any place, current tools for e-learning still have their limitations. The main shortcoming, compared to real life learning is the limited opportunity for human like interaction between student, teacher and...
journal article 2009
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Fitrianie, S. (author), Rothkrantz, L.J.M. (author)
In recent years, we have developed a framework of human-computer interaction that offers recognition of various communication modalities including speech, lip movement, facial expression, handwriting/drawing, gesture, text and visual symbols. The framework allows the rapid construction of a multimodal, multi-device, and multi-user communication...
conference paper 2009
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Rothkrantz, L.J.M. (author), Yang, Z. (author)
One of the goals of the crowd control project at Delft University of Technology is to detect and track people during a crisis event, classify their behavior and assess what is happening. The assumption is that the crisis area is observed by multiple cameras (fixed or mobile). The cameras sense the environment and extract features such as the...
conference paper 2009
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Van Waveren, J.M.P. (author), Rothkrantz, L.J.M. (author)
book chapter 2008
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Fitrianie, S. (author), Rothkrantz, L.J.M. (author)
Web lectures have many positive aspects, e.g. they enable learners to easily control the learning experiences). To develop high-quality online learning materials takes a lot of time and human efforts [2]. An alternative is to develop a digital teacher. We have developed a prototype of a synthetic 3D face that shows emotion associated to text...
journal article 2006
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