Topological visual mapping in robotics

A key problem in robotics is the construction of a map from its environment. This map could be used in different tasks, like localization, recognition, obstacle avoidance, etc. Besides, the simultaneous location and mapping (SLAM) problem has had a lot of interest in the robotics community. This paper presents a new method for visual mapping, using topological instead of metric information. For that purpose, we propose prior image segmentation into regions in order to group the extracted invariant features in a graph so that each graph defines a single region of the image. Although others methods have been proposed for visual SLAM, our method is complete, in the sense that it makes all the process: it presents a new method for image matching; it defines a way to build the topological map; and it also defines a matching criterion for loop-closing. The matching process will take into account visual features and their structure using the graph transformation matching (GTM) algorithm, which allows us to process the matching and to remove out the outliers. Then, using this image comparison method, we propose an algorithm for constructing topological maps. During the experimentation phase, we will test the robustness of the method and its ability constructing topological maps. We have also introduced new hysteresis behavior in order to solve some problems found building the graph.     

Does role stress predict burnout over time among health care professionals?

Abstract

The main objective of this study is to test the effects over time of three role stress variables (role conflict, role ambiguity and role overload) on the three burnout dimensions (emotional exhaustion, depersonalization and personal accomplishment). Based on theoretical models on burnout and on meta-analytical research, it is hypothesized that the three role stress variables will predict changes over time in emotional exhaustion and depersonalization, but not in personal accomplishment. The results obtained by means of hierarchical regression analysis partially support the hypothesis. The three role stress variables predict emotional exhaustion over time. Role conflict and role overload predict depersonalization over time. Finally, contrary to expectations, role ambiguity predicts personal accomplishment over time.     

Differences in negative life events between patients with anxiety disorders,depression and hypochondriasis

This study investigated whether some categories of adverse life events are differentially associated with specific types of emotional disorders. A life self-report measure of major life events was completed by 42 subjects with diagnoses of anxiety disorders, 46 subjects with major depression, 26 subjects with hypochondriasis and 73 nonclinical subjects (controls). As predicted, the onset of anxiety disorders, depression, and hypochondriasis appears to be differentially related with life stress of ‘threat’, ‘loss’, and ‘health’, respectively, previously experienced by the clinical subjects. Also, there were significant differences between clinical and nonclinical subjects on both perceived life stress and number of life events reported. Findings suggest a differential implication of psychosocial stress categories in particular emotional disorders (i.e., anxiety, depressive and hypochondriacal disorders). These results expand previous findings that have demonstrated an association between negative life events and psychopathology.     

How perceived discrimination and professional rejection sensitivity impact women's career success

Professional rejection is a widespread phenomenon—most, if not all, of us have or will experience it in our lifetimes. However, some are more adept at handling it than others. This paper examines individual differences in how people interpret and handle professional rejection, proposing a construct called professional rejection sensitivity. We focused on whether this construct predicts decreased self-promoting behaviors and increased self-silencing behaviors and, subsequently, whether that impacts career success for junior faculty. Moreover, we investigated whether women may be disproportionally predisposed to professional rejection sensitivity because they tend to experience more discrimination in the workplace than men. We collected self-report data (i.e., individual differences) and biodata (i.e., curriculum vitae) from 300 junior faculty and found evidence of gender differences, such that women perceive more discrimination and report higher professional rejection sensitivity than men. We also found that individuals who are higher in professional rejection sensitivity are more likely to practice self-silencing behaviors, and individuals who perceive more discrimination have lower career success. This paper serves as the first step in demonstrating the existence of professional rejection sensitivity, which can guide future research that addresses how individuals can overcome this disposition. To support this path of research, we conclude with suggestions for potential interventions.     

Training higher education students in mathematics learning strategies

The present research focuses on the design and testing of a training program in learning strategies for Mathematics in Higher Education students. This research displays a quasiexperimental-sequential design with a non-equivalent control group. The research aims at revealing the effect of this training program both on the student's competence in learning strategies and on academic performance in this curricular area. There have been 176 students taking part in this research (74 students forming the experimental group and 72 forming the control group). The obtained results permit to assess the program efficiency as regards both trained strategies handling and specific performance improvement.     

Neuropsychological Evaluation of Everyday Memory

The evaluation of everyday memory (EM) was reviewed and reconceptualized. EM has established new objectives of study and the development of new methods to reach these objectives . At the basic level, this approach has already produced important discoveries and the development of new principles about memory and functioning. At the clinical level, this new area of investigation has resulted in evaluating deficits of EM, which is defined as what daily life functions remain impaired after a deficit pathology has occurred. A type of evaluation has evolved that is oriented toward treatment and extremely useful in designing rehabilitation programs for individuals with alterations in memory.