An Energy-aware Ad-hoc Routing Strategy for Queriable Wireless Sensor Networks

The data volume handled by wireless sensor networks (WSN) is ever growing due to increasing node counts and node complexity – be it in traditional WSN applications or for Car2X or Internet-of-Things. Queriable WSN are a concept to handle the large data volumes in such networks by abstracting the network as a virtual database table to which users can pose queries. This declarative approach enables networks which can flexibly adapt to changing application requirements. In addition they possess a flat learning curve since users do not need to have a high technological understanding of the sensor node firmware. Upon executing a query it is first propagated through the network and once it has reached the desired nodes, results are collected and send back through the query-posing node (usually the sink). The routing which is used for the data aggregation step plays a major role in the energy efficiency in networks with increasing node and sensor value counts as represented by Car2X networks for instance. In this paper, an ad-hoc routing strategy for queriable WSN is proposed which is both energy-aware and application-specific. It will be shown that this routing can contribute greatly towards decreasing the energy consumption needed for data aggregation and thus helps increasing the network’s lifespan

Towards Cloud-supported Automotive Software Development and Test

The development of automotive software has been an evolving process for the last decades. As a result, the paradigm of software development which is independent of the target hardware platform has been adopted in almost all parts of the automotive industry. Deploying software to a hardware platform is now controlled by an enormous parameter set stored in a mapping configuration. This led to the creation of numerous vendor-specific tools for electronic control unit (ECU) development. While this approach simplifies and supports the re-usability of vehicle functions it also increases the complexity as well as the difficulty for integration tests and error localization. In this paper, we present a conceptual platform which allows to establish references between different development and test phase items in a developer-friendly way. It revolves around two self-developed tools supported by an extensive AUTOSAR knowledge base. The system creates inter-connectivity so that it becomes easier to locate the actual origin of a misbehavior or to find a test error manifestation in the actual end system for developers and testers alike

Introduction to the Proceedings of the ISCSET 2023: The 12th International Symposium on Computer Science, Computer Engineering and Educational Technologies

The 12th International Symposium on Computer Science, Computer Engineering and Educational Technologies (ISCSET 2023) is published in a special issue of the Embedded Self-Organizing Systems journal of the Chemnitz University of Technology for the second time. In a significant first, ISCSET 2023 utilized the EasyChair conference management platform for paper submissions. Each submission underwent thorough review by three esteemed professors and researchers from our partner universities, resulting in 27 submissions with an acceptance rate of 62%. But ISCSET 2023 was more than just papers; it was a dynamic symposium that featured engaging keynote presentations, thought-provoking talks by invited speakers as well as lively paper presentations. We had participants from 18 countries: Germany, Mongolia, China, France, Jordan, Algeria, Japan, Kazakhstan, Uzbekistan, Bangladesh, India, Iraq, Turkey, Afghanistan, Iran, Tunis, Pakistan and Syria. Thus, with ISCSET 2023 we celebrated a true global convergence of knowledge and ideas

An Event-based Local Action Paradigm to Improve Energy Efficiency in Queriable Wireless Sensor Actuator Networks

Wireless sensor networks (WSN) are deployed in a multitude of applications both in industrial and academic fields. In recent years, due to the emerge of Internet of Things (IoT) technologies and Vehicle2X communication scenarios, novel challenges for wireless sensor network platforms - regarding hardware and software - arose. Thus, challenges known from big data processing have reached the WSN scope and consequently approaches and methods have been devised to handle these. One such approach is queriable wireless sensor networks which enable their users the specification of sensing tasks in a declarative way without the need to re-program nodes in case the application requirements change. As many current WSN applications feature active parts with which nodes can directly influence their environment, the term wireless sensor actuator networks (WSAN) has been coined, setting such networks apart from solely passively measuring networks.In this article, we will present a short introduction to big data processing in wireless sensor networks which motivates the usage of queriable networks. We will show that in order to enable a WSAN to carry out actions energy-efficiently and in a timely manner, an event-based action model is favorable. Additionally, we will demonstrate how such an event system can be used to improve sub query performance in WSNs. We conclude with an evaluation regarding the benefit of combining this approach with wake-up receiver technologies based on a qualitative energy efficiency definition for WSN

I do it, you do it, we do it. Just do it.: Über die Kultur der Nachahmung im Web 2.0 und deren Funktion als Archiv- und Quellmaterial

Ermöglicht durch die Medientechnologien des Web 2.0 hat sich seit Mitte der 2000er Jahre ein kulturelles Nachahmungsphänomen im Internet entwickelt. YouTube, Flickr, Twitter und Co. haben zu einer Potenzierung und Beschleunigung der ohnehin vorhandenen ,Kultur des Kopierens’ geführt. Anhand der mehrteiligen Arbeit I’m too sad to tell you des Konzeptkünstlers Bas Jan Ader und deren Nachahmungen und Adaptionen wird hier beispielhaft untersucht, welche Auswirkungen, Potentiale und Begrenzungen sich aus dem Nachahmungsphänomen ableiten lassen und inwiefern der über die Videoplattformen erstellte User-Generated-Content als Archiv- und Quellenmaterial für eine künstlerische Forschung fungieren kann

Influence of Viscosity in Fluid Atomization with Surface Acoustic Waves

In this work, aqueous glycerol solutions are atomized to investigate the influence of the viscosity on the droplet size and the general atomization behavior in a setup using standing surface acoustic waves (sSAW) and a fluid supply at the boundary of the acoustic path. Depending on the fluid viscosity, the produced aerosols have a monomodal or polymodal size distribution. The mean droplet size in the dominant droplet fraction, however, decreases with increasing viscosity. Our results also indicate that the local wavefield conditions are crucial for the atomization process

Psychosocial Distress in Women With Breast Cancer and Their Partners and Its Impact on Supportive Care Needs in Partners

Objectives: While both patients and informal caregivers report high levels of cancerrelated distress, supportive care needs of relatives are often not taken into account and little is known about mutual perception of distress within couples. Therefore, we aimed to investigate distress in female patients with breast cancer and their male partners as well as supportive care needs in partners. Methods: In this cross-sectional study, we recruited women with breast cancer during primary cancer care and their male partners, obtained information on mental distress and supportive care needs through visual analog scales for four mood domains and the Short Form of Supportive Care Needs Survey (SCNS-SF34). Results: Among 250 eligible patients with breast cancer, 102 patients (40.8%) and their male partners participated. Partners reported higher levels of distress (p = 0.02), whereas patients (self-assessment) indicated stronger needs for help (p < 0.001). Men with higher levels of distress were younger (p < 0.001), and reported a shorter relationship duration (p = 0.001) compared to partners with lower distress. Partners overestimated distress, anxiety, depression, and need for help in the patient. Patients overestimated partners need for help. The majority of partners (78%) reported at least one unmet need, most frequently related to the health system and information domain. Conclusion: A systematic distress and needs assessment for women with breast cancer and their male partners is mandatory. The provision of optimal supportive care depends on protocols that include not only psychosocial care for patients but also procedures for managing distress and needs for partners including individual and couple-based interventions

Diferenças mesoclimáticas em Porto Alegre: comparação dos dados da Reserva Biológica do Lami com os do 8° Distrito de Meteorologia

O presente estudo visa comparar dados climáticos observados na Reserva Biológica do Lami (MEIRA, 1996) e compará-los com os dados do 8° Distrito de Meteorologia (8° DISME) no bairro Jardim Botânico. O trabalho está sendo desenvolvido na disciplina de Exercício Profissional em Geografia, junto ao Centro de Ecologia da Universidade Federal do Rio Grande do Sul.

Study protocol of a randomized controlled trial on two new dissemination strategies for a brief, shared-decision-making (SDM) training for oncologists: web-based interactive SDM online-training versus individualized context-based SDM face-to-face training

Background: Oncological patients often feel left out of important treatment decisions. However, when physicians engage them in shared decision-making (SDM), patients benefit in many ways and the situation is improved. SDM can effectively be taught to physicians, but participation barriers for SDM physician group trainings are high, making it hard to convince physicians to participate. With this in mind, we aim to develop and evaluate two new dissemination strategies for a brief, SDM training program based upon a proven SDM group-training concept: an individualized context-based SDM face-to-face training (IG I) and a web-based interactive SDM online training (IG II). We aim to analyze which improvements can be achieved by IG I and II compared to a control group (CG) in physician SDM competence and performance as well as the impact on the physician-patient relationship. Furthermore, we analyze differences in satisfaction concerning the two dissemination strategies by means of a training evaluation. Methods/design: We examine – based on a three-armed randomized controlled trial (IG I, IG II, CG) – the effectiveness of two new dissemination strategies for a SDM training program compared to a CG receiving no SDM training (voluntary access to SDM training as an incentive for participation after completion of the study). We aim to include 162 physicians randomized to one of the three arms. There will be two assessment points in time (before intervention: T0 and post-training: T1). The main outcome is the SDM competence of physicians as measured by an established observational assessment rating system (OPTION-12) by means of consultations with Standardized Patients. Standardized Patients are individuals trained to act as “real” patients. Secondary outcome measures are the SDM performance (SDM-Q-9) and the Questionnaire on the Quality of Physician-Patient-Interaction (QQPPI) both rated by Standardized Patients as well as the physicians’ training evaluation. Discussion: This trial will assess the effectiveness and acceptability of two new dissemination strategies for a brief, SDM training program for physicians. Opportunities and challenges regarding implementation in daily routines will be discussed. Trial registration: ClinicalTrials.gov, Identifier: NCT02674360. Prospectively registered on 4 February 2016