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3D Time-of-Flight (ToF)
(2015)
3D Time-of-Flight (ToF)
(2012)
3D-Imaging
(2009)
Räumliches Wahrnehmen der Fahrerumgebung mit PMD-Sensorik in Assistenz- und Sicherheitssystemen
(2005)
3D time of flight distance measurement with custom solid state image sensors in CMOS, CCD technology
(2000)
Since we are living in a three-dimensional world, an adequate description of our environment for many applications includes the relative position and motion of the different objects in a scene. Nature has satisfied this need for spatial perception by providing most animals with at least two eyes. This stereo vision ability is the basis that allows the brain to calculate qualitative depth information of the observed scene. Another important parameter in the complex human depth perception is our experience and memory. Although it is far more difficult, a human being is even able to recognize depth information without stereo vision. For example, we can qualitatively deduce the 3D scene from most photos, assuming that the photos contain known objects [COR]. The acquisition, storage, processing and comparison of such a huge amount of information requires enormous computational power - with which nature fortunately provides us. Therefore, for a technical implementation, one should resort to other simpler measurement principles. Additionally, the qualitative distance estimates of such knowledge-based passive vision systems can be replaced by accurate range measurements.
Entfernungsmesssystem
(2019)
Time of flight camera system
(2017)
Time of flight camera system
(2017)
Lichtlaufzeitkamerasystem
(2017)
Abstandsmeßsystem
(2017)
Lichtlaufzeitsensor
(2012)
Lichtlaufzeitkamera
(2012)
Evaluation and Optimization of IEEE802.11 multi-hop Backhaul Networks with Directional Antennas
(2020)
A major problem for rural areas is the inaccessibility to affordable broadband Internet connections. In these areas distances are large, and digging a cable into the ground is extremely expensive, considering the small number of potential customers at the end of that cable. This leads to a digital divide, where urban areas enjoy a high-quality service at low cost, while rural areas suffer from the reverse.
This work is dedicated to an alternative technical approach aiming to reduce the cost for Internet Service Provider in rural areas: WiFi-based Long Distance networks. A set of significant contributions of technology related aspects of WiFi-based Long Distance networks is described in three different fields: Propagation on long distance Wi-Fi links, MAC-layer scheduling and Interference modeling and Channel Assignment with directional antennas.
For each field, the author composes and discusses the state-of-the-art. Afterwards, the author derives research questions and tackles several open issues to develop these kinds of networks further towards a suitable technology for the backhaul segment.
Ein Gesundheitssystem, das auf einem erreichten medizin-technischen Stand verharrt, sich nicht mehr weiterentwickelt und damit auch keinen Zugriff auf innovative Versorgungsansätze und -strukturen erlaubt, wird sicherlich rasch in öffentliche Kritik geraten. Versorgungs- und Therapieinnovationen sind stets willkommen, wenn sich höherer Nutzen und zumindest unveränderte Kosten zeigen. Die beiden Arbeiten dieses Bandes diskutieren die aktuellen Finanzierungsregeln für Krankenhäuser und regen mit einem Vorschlag für einen innovationsbezogenen Performance Measurement-Ansatz zu weiterer Forschung in diesem Feld an.
Background: 3-hydroxy-3-methylglutaryl-coenzyme A lyase deficiency (HMGCLD) is an autosomal recessive disorder of ketogenesis and leucine degradation due to mutations in HMGCL.
Method: We performed a systematic literature search to identify all published cases. Two hundred eleven patients of whom relevant clinical data were available were included in this analysis. Clinical course, biochemical findings and mutation data are highlighted and discussed. An overview on all published HMGCL variants is provided.
Results: More than 95% of patients presented with acute metabolic decompensation. Most patients manifested within the first year of life, 42.4% already neonatally. Very few individuals remained asymptomatic. The neurologic long-term outcome was favorable with 62.6% of patients showing normal development.
Conclusion: This comprehensive data analysis provides a systematic overview on all published cases with HMGCLD including a list of all known HMGCL mutations.
