We present the Social Navigator, an open, Web-based learning platform supporting training of Social Media skills in vocational education. It provides access to a rich pool of resources that enable teachers to integrate Social Media education into the teaching process and offers information and training material to trainees. Designed in an interdisciplinary approach, the Social Navigator builds ...

Semantic web search engines can take advantage of machineunderstandable data published on the Web to provide more precise search results and advanced query capabilities. Semantic data embedded in web documents (serialized as RDFa or microformats, for example) can be used in conjunction with a semantic web search engine to provide a better web navigation experience. We present Semantic Navigator...

Introduction: High-resolution coronary artery imaging is commonly gated to end-expiration using diaphragmatic navigator echoes, resulting in inherently low respiratory efficiency (RE) which is further exacerbated by respiratory drift. Recently, it was demonstrated that epicardial fat can be used as a marker of coronary artery position in a 3D beat-to-beat non-model based subject-specific respir...

Introduction: Respiratory motion compensation in coronary artery MRI is challenging. Commonly, a pencil-beam navigator positioned on the right hemidiaphragm is used with a fixed slice tracking factor of 0.6 [1]. However, this scale factor varies among different patients [2, 3]. Respiratory selfgated navigator techniques have been introduced to directly measure the respiratory induced motion of ...

Abstract Accumulation of atmospheric icing, particularly wet snow, on the visual sensors/navigators autonomous vehicles (AVs) increases possibility accidents by obstructing lenses sensors. Here, two navigator designs were suggested that use airflow across lens surfaces AVs to prevent snow accumulation them. The impact intensity lens, wind velocity (relative with respect vehicle), and liquid wat...

Americans who live in poverty as well as certain ethnic and racial groups have higher cancer death rates than other populations. Patient navigators have been identified as an important weapon against these disparities. Navigators can address insurance, financial, and logistical issues (e.g., transportation, appointment scheduling, child or elder care). They can provide understandable health edu...

Background 4D Phase-Contrast MRI ("4D Flow”) has become a choice modality for assessment of flow patterns in complex vasculatures, such as congenital heart diseases. For thoracic imaging, the technique relies on ECG-triggering and an imaging navigator to compensate for breathing motion [Markl-JMRI2007]. The acquisition of the navigator requires switching off the 4D flow acquisition, thus breaki...

Navigator echoes are frequently used in cardiac magnetic resonance to monitor respiratory motion and have proved particularly useful in coronary artery imaging techniques where they allow the acquisition of data over multiple reproducible breathholds and during free breathing. The large number of variables involved in their use, however, is such that an optimal method of application may yet hav...

Consider an arrangement of equilateral non-overlapping translated triangles in the plane and two points S and T so that the segment ST is parallel to a side of each of the triangles. Assume one needs to navigate from point S to point T by evading the triangular obstacles without any previous knowledge of the location of the obstacles. The navigator becomes aware of a triangle once it is contact...

Background Acquisition durations of navigator gated high resolution 3D late gadolinium enhancement (LGE) studies are long (1,2). While implementation of the continuously adaptive windowing strategy (CLAWS (3)) which results in the fastest possible acquisition duration for a given breathing pattern and navigator acceptance window size may be beneficial, the respiratory-dependent and therefore, n...