ABSTRACT Small UAV performance is limited by the sensors and software filters used in the navigational systems. Several solutions of various complexity and cost exist, however no ready-made solutions exist for a high-accuracy, low-cost UAV system. Presented is the design (low-level system as well as high-level extended Kalman filter) for a specifically designed small-UAV navigation platform, Ag...

This study is an application of the Statistical Severe ConvectiveRiskAssessmentModel (SSCRAM), which objectively assesses conditional severe thunderstorm probabilities based on archived hourly mesoscale data across the United States collected from 2006 to 2014. In the present study, SSCRAM is used to assess the utility of severe thunderstorm parameters commonly employed by forecasters in antici...

A new heterogeneous ice nucleation parameterization that covers a wide temperature range (−36 to−78 C) is presented. Developing and testing such an ice nucleation parameterization, which is constrained through identical experimental conditions, is important to accurately simulate the ice nucleation processes in cirrus clouds. The ice nucleation active surface-site density (ns) of hematite parti...

Successful innovation depends on the development and integration of new knowledge in the innovation process. Part of this knowledge will reach the firm from external sources. Several authors have documented the existence of these external information flows and have commented on their importance for decisions at the firm level (Adam B. One challenge facing this literature has been the measuremen...

Die Vielzahl der verfügbaren Messmethoden und Sensorplattformen in der Feldphänotypisierung als auch das Fehlen von Standards im Bereich der Messdatenverwaltung und der experimentellen Planung bzw. Ausführung führte zur Entwicklung des flexiblen Auftragsund Informationssystem FuRIOS. Für eine hohe Interoperabilität und einfache spätere Nutzung freier GISClients wurden verbreitete OGC-Standards ...

From a detailed analysis of marine and terrestrial aerosol tracers in the NGRIP ice core we identified two distinct glacial atmospheric flow patterns. The climate transition from Marine Isotope Stage 5 (MIS 5) to MIS 4, at approximately 75 kyr BP, marks a shift between two different atmospheric flow regimes. Before this transition, during 5 MIS 5d-a, the state of atmospheric flow was alternatin...

The recently developed Zurich Ice Nucleation Chamber (ZINC) was used to explore ice nucleation of size-selected mineral dust particles at temperatures between −20C and −55C. Four different mineral dust species have been tested: montmorillonite, kaolinite, illite and Arizona test dust (ATD). The selected particle diameters are 100 nm, 200 nm, 400 nm and 800 nm. Relative humidities with respect t...

Question answering is an age old AI challenge. How we approach this challenge is determined by decisions regarding the linguistic and domain knowledge our system will need, the technical and business acumen of our users, the interface used to input questions, and the form in which we should present answers to a user’s questions. Our approach to question answering involves the interactive constr...

Having “The Microstructural Frontier” theme for the present MMM conference, it is fitting to examine the means for using microstructural information as an integral part of the design-materials-manufacturing enterprise. During the 1980’s and early 1990’s process-modeling frameworks introduced formal linkages between manufacturing and engineering design systems. Extensions of these now treat prim...

The upper 1200 m of pre-Pliocene sediment recovered by Cape Roberts Project (CRP) drilling off the Victoria Land coast of Antarctica between 1997-1999 has been subdivided into 54 unconformity-bound stratigraphic sequences, spanning the period c. 32 to 17 Ma. The sequences are recognised on the basis of the cyclical vertical stacking of their constituent lithofacies, which are enclosed by erosio...