Mobile learning platform combined RFID information of heterogeneous wireless mesh network for forest education and training

In this paper, we present heterogeneous wireless network technique of mobile learning for relating paper maps and electronic information resources using Radio Frequency Identification （RFID）, mobile device and Wi-Fi technology. The system combines paper maps with electronic guide resources. Information about a training problem or region is accessed by waving a handheld computer equipped with an RFID reader above the region of interest on a paper map. Mobile platform device has been used as a tool for navigation learning and mobile-learning information. It presents the prototyping efforts, including forest learning and imagery of forest problems learned about using RFID for mixed media interfaces.     

Motivational dilemmas in collaborative learning activities: The case of the Swedish International Development Cooperation Agency (SIDA)

Complex social and environmental problems—such as climate change, rural poverty, and over‐fishing—defy simple policy solutions. An increasing number of scholars, practitioners, and policy makers now agree that coming to grips with such problems requires more collaborative and adaptive forms of learning and decision‐making. Such approaches seek to involve a variety of stakeholders to learn about system‐level effects of past human decisions and adapt future management decisions to the lessons learned. While there are plenty of success stories at the local level, the collaborative learning approach has turned out to be difficult to implement at broader scales—in large public organizations and in society at large. This article provides an explanation for such shortcomings, arguing that the creation of collaborative learning systems is plagued by several motivational dilemmas. By systematically mapping out the institutional incentives of the potential participants in collaborative learning activities, it is argued that one can gain a better understanding of the likelihood that adaptive systems will actually work. These ideas are tested on the case of the Swedish International Development Cooperation Agency (Sida). It is found that most Sida staff face conflicting incentives to engage in collaborative learning, but there are opportunities for management to strengthen such incentives. Copyright © 2009 John Wiley & Sons, Ltd.     

Continuing education: Toward a life-course perspective on social learning

Sutherland's differential association theory and the life-course perspective have at times been conceptualized as contrasting theories of criminal behavior. I argue instead that our understanding of delinquency, the dynamics underlying criminal persistence and desistance, and intergenerational patterns will be enhanced by a more explicit integration of these two traditions. I focus on family processes as these are foundational intimate relationships that remain underappreciated as a source of lifelong learning and influence. Although family support and variations in parental supervision have been amply investigated, “direct transmission” takes place within the family as well as within the confines of the more heavily studied world of adolescent peer groups. I identify five dimensions of direct transmission and illustrate these dynamic processes with qualitative data from two longitudinal studies and results of recent quantitative analyses. The analysis is generally in line with Sutherland's original formulation but includes several extensions and modifications. It is important to include a role for human agency, and for “noncriminal” definitions and lifestyle factors, in addition to the directly criminogenic definitions Sutherland and subsequent researchers have emphasized. The focus on social processes is, however, consistent with Sutherland's goal of highlighting limitations of psychological and biological differences explanations.     

A New Robust Epigenetic Model for Forensic Age Prediction

Forensic DNA phenotyping refers to an emerging field of forensic sciences aimed at the prediction of externally visible characteristics of unknown sample donors directly from biological materials. The aging process significantly affects most of the above characteristics making the development of a reliable method of age prediction very important. Today, the so-called “epigenetic clocks” represent the most accurate models for age prediction. Since they are technically not achievable in a typical forensic laboratory, forensic DNA technology has triggered efforts toward the simplification of these models. The present study aimed to build an epigenetic clock using a set of methylation markers of five different genes in a sample of the Italian population of different ages covering the whole span of adult life. In a sample of 330 subjects, 42 selected markers were analyzed with a machine learning approach for building a prediction model for age prediction. A ridge linear regression model including eight of the proposed markers was identified as the best performing model across a plethora of candidates. This model was tested on an independent sample of 83 subjects providing a median error of 4.5 years. In the present study, an epigenetic model for age prediction was validated in a sample of the Italian population. However, its applicability to advanced ages still represents the main limitation in forensic caseworks.     

Establishing phone-pair co-usage by comparing mobility patterns

In forensic investigations it is often of value to establish whether two phones were used by the same person during a given time period. We present a method that uses time and location of cell tower registrations of mobile phones to assess the strength of evidence that any pair of phones were used by the same person. The method is transparent as it uses logistic regression to discriminate between the hypotheses of same and different user, and a standard kernel density estimation to quantify the weight of evidence in terms of a likelihood ratio. We further add to previous theoretical work by training and validating our method on real world data, paving the way for application in practice. The method shows good performance under different modeling choices and robustness under lower quantity or quality of data. We discuss practical usage in court.     

The potential of collaborative learning as a tool for forensic students: Application to signature examination

Transferring theoretical knowledge to practical skills remains a big challenge in forensic science, especially in questioned documents. The examination of handwriting and signatures requires years of practice to develop the necessary skills. While students (and to some extent the general population) often have the impression that it is easy to differentiate handwriting from different persons, in practice, particularly when dealing with simulated signatures, there is a high risk of reaching a wrong conclusion when questioned document experts do not use a systematic approach and/or are not sufficiently experienced (see for example the famous French Dreyfus case). Thus, a novel teaching approach, based on collaborative learning, has been introduced in a theoretical handwriting class to improve the students’ theoretical knowledge, and additionally make them aware of the limitations of their practical skills and give them tools to improve them in their future practice. Through five activities, the students took the roles of victims, forgers, teachers and experts and created their own learning materials (i.e. signatures and mock casework). During those interactive activities, they learned to describe their signature’s characteristics, intra-variability and complexity, and thus evaluate their own signature’s vulnerability (as potential victims). They learned techniques to simulate signatures and detect the resulting forgeries’ characteristics (in the role of forgers). In the role of teachers, they prepared mock casework scenarios and gave feedback to their colleague’s examination of the produced material. As experts, they carried out signature examination as they would in a proficiency test and were exposed to the difficulties an actual expert may encounter in practice. The evaluation of this novel teaching scenario was very positive, as students learned more extensively the possibilities and limitations of signature comparison. They were more active and motivated in their learning experiences. The teaching team also had an improved experience. Some students complained of an increased workload and imprecise instructions. Improvements were tested and are discussed in this paper.     

The Disruptive and Transformative Potential of Hypertext in the Classroom: Implications for Active Learning

This article describes a further extension of a strategy to move from a teacher-oriented to a student-oriented learning environment through the use of 'collaborative hypertext.' Students were trained in the use of MidasWeb, a Web-based environment for the organization, storage, and retrieval of hypertext documents and images. Over the course of the term students worked in teams to construct their MidasWeb sites by developing the underlying conceptual frameworks for their subject areas and uploading documents. The results of questionnaire surveys of the students suggest that the MidasWeb exercise did achieve our objective of disrupting the traditional relationship between teacher and student to create a more student-centered environment. The more students became involved in the exercise the more they felt empowered with respect to the subject matter of the course and took responsibility for deriving meaning from the information they had obtained. In addition, the experience encouraged them to think about the subject matter across interdisciplinary lines. Because the MidasWeb exercise was structured as a group activity, the effectiveness of the team coordinators had an impact on the success of the teams as well as the nature of the learning experience of the individuals involved. Although the MidasWeb exercise was a successful application of digital technology to classroom learning, it was not a resounding success, because the impact on the students in the course was not uniform. While a substantial majority of them found MidasWeb to be very involving and moved toward student-centered learning, approximately one third of them, especially students who were uncomfortable with computer technology, did not benefit fully from the exercise. This suggests that in the future more time should be spent on training, and that MidasWeb needs to be made more user friendly for unsophisticated users.     

Stimulating Simulations: Making the European Union a Classroom Reality

This article examines the organization and development of the Mid-Atlantic European Union Simulation Consortium (MEUSC), with special emphasis on linking theory to practice within its simulation program. The MEUSC program, initiated in 1993, brings fifteen colleges and universities to Washington, D.C., each December for an intercollegiate experiential learning exercise on the European Union. During the simulation, students meet with professional diplomats from both the United States and Europe, and they engage in consensus-building activities that mirror the decision-making processes of the EU Commission, Parliament, Council of Ministers, and the European Council. As a result, participants are able to refine and enhance a range of academic and practical skills that are keys for success in today's political and business worlds. The authors of this article make special use of a survey that was undertaken to gauge the impact of the simulation on its participants and, thus, its success as an educational venture.     

Teaching with a Mallet: Conveying an Understanding of Systemic Perspectives on International Relations Intuitively— Croquet as Experiential Learning

Structural Realist theory on the operation of the international system has often been likened to theory one might find in physics to describe the motions of the balls in a game of billiards. While this metaphor is usually used in jest, or as critique of Realist theory, the use of such games can effectively convey our understanding of international systemic dynamics from a number of theoretical perspectives. Games involve more than physics-like laws of interaction between similar entities or actors. They also involve social aspects of interaction; they assume the contextual laws involving the premise of the game, accepted and unaccepted behavior, and the dispositions of the actors controlling the balls to their competitive environment.
This paper gives an account of the use of croquet as an instructional exercise in an Introduction to International Relations class. Croquet's ability to convey to students a variety of theoretical perspectives is discussed, as are the "lessons" the students took from the exercise, as described in their post-game reflections.