27 research outputs found
UAV-based autonomous detection and tracking of beyond visual range (BVR) non-stationary targets using deep learning
No full textAerial surveillance and tracking have gained significant traction in recent years for both civilian applications and military reconnaissance. Disaster analysis, emergency medical response, pandemic spread analysis, etc. have significantly improved with the availability of aerial data. The next big step is to push the system for autonomous detection and tracking of targets beyond visual range (BVR). Presently, this is done using GPS-based techniques in which the target information is assumed to be precisely known. In situations where such information is unavailable or if the target of interest is non-stationary, this method is not applicable and currently, no alternative exists. In this work, we aim to address this limitation and propose a deep learning-based algorithm for terminal guidance of aerial vehicle BVR with only bearing information about the target of interest. The algorithm operates in search and track modes. We describe both the modes and also discuss the challenges associated with this kind of deployment in real time. Since the weight and power requirements of the payload directly translate to the cost of deployment and endurance of aerial vehicles, we have configured a custom lightweight convolutional neural network (CNN) with minimal layers and successfully deployed the system on Jetson Nano, the smallest GPU available from NVIDIA as of this writing. We evaluated the performance of the proposed algorithm on proprietary and open-source datasets and achieved detection accuracy greater than 98.6% on custom datasets. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature
Grondige beschryvinge van de edele ende ridderlijcke scherm- ofte wapen-konste : noyt diergelijcke in dese nederduytse tale in den druck uytgegaen, met veele schoone kopere figueren verciert /
No full textSignatures: *-2*⁴ A-V⁴.Frontispiece port. of author, dated 1671.Imprint from printed slip mounted on t.p., cancelling that of the 1st ed.: Gedruckt vor den Autheur, Tot Leyden, By Abraham Verhoef, Boekdrucker, ao. 1671.Mode of access: Internet.Initials BvR on front flyleaf. John Landwehr's printed label on front pastedown.Binding: vellum. Author & title written at head of spine
Reentrant Phase Transition in Charged Colloidal Suspensions
No full textWe report the observation of a novel phase transition in dilute aqueous suspensions of polystyrene particles as a function of ionic impurity concentration C. The suspension phase separates into dense and rare phases only for a restricted range of C which depends on particle concentration. The dense phase has liquidlike or crystalline order depending on n and C. Free energies of the homogeneous and the phase-separated states are calculated with an effective interparticle potential. The calculated phase diagram is in qualitative agreement with the present experimental results
Erratum: The Role of the EU Charter of Fundamental Rights in Climate Litigation (German Law Journal (2021) 22:8 (1499-1510) DOI: 10.1017/glj.2021.78)
No full textIn Table 1 (p. 1507), the case �Friends of the Earth Germany, Association of Solar Supporters, and Others v. Germany November 22, 2018� is listed as �pending�. On March 24, 2021, the case was dismissed as inadmissible by the German Federal Constitutional Court (case number 1 BvR 2656/18). The author would like to thank Matti Gurreck for noting this error
What future for the eurozone after Karlsruhe?
No full textThe paper analyzes the decision of the German Federal Constitutional Court rendered on 5 May 2020 (2 BvR 859/15, 2 BvR 980/16, 2 BvR 2006/15, 2 BvR 1651/15), wereby the latter heavily criticized the “democratic” legitimacy of the Public Sector Purchase Program of the European Central Bank (aimed, by purchasing negotiable debt securities issued by governments, public agencies and international institutions located in the euro area, to support the economy of the Member States and to increase the eurozone’s inflation rate up to 2%), de facto disapplying the judgment of the CGEU of 11 December 2018, by which that Program had been instead previously “validated.” The author places the decision in the context of the long-standing and conflicting relations, on the one hand, between Member States and European institutions and, on the other hand, between national constitutional courts and the Court of Justice of the European Union, outlining the possible repercussions of the decision on alegal, economic, political and institutional
level and, ultimately, on the very survival of the eurozone
What Future for the Eurozone After Karlsruhe?
No full textThe paper analyzes the decision of the German Federal Constitutional Court rendered on 5 May2020 (2 BvR 859/15,2 BvR 980/16,2 BvR2006/15,2 BvR 1651/15), wereby the latter heavily criticized the "democratic" legitimacy of the Public Sector Purchase Program of the European Central Bank (aimed, by purchasing negotiable debt securities issued by governments, public agencies and international institutions located in the euro area, to support the economy of the Member States and to increase the eurozone's inflation rate up to 2%), de facto disapplying the judgment of the CGEU of 11 December 2018, by which that Program had been instead previously "validated." The author places the decision in the context of the long-standing and conflicting relations, on the one hand, between Member States and European institutions and, on the other hand, between national constitutional courts and the Court of Justice of the European Union, outlining the possible repercussions of the decision on a legal, economic, political and institutional level and, ultimately, on the very survival of the eurozone
[[alternative]]The Effects of Endurance Training and Interval Training on Bone Developments
No full text[[abstract]]To investigate the effects of endurance training and interval training on bone developments, thirty-two Wistar rats (7-wk old) were randomly assigned into three groups: Endurance training group, Interval training group, and Control group. Animals of exercise groups were trained on the treadmill 5 days/week for 8 weeks. Training began at 12 m/min (20 min) and progressively increased to 22 m/min (60 min) for Endurance training group and 30m/min (9 sets, 4 minites and 53 secounds per set) for Interval training group. The training distance was the same in both of the two exercise groups. The variables among groups analyzed by one-way anova included: (1) bone mineral density (BMD) of femur and tibia; (2) bone volume ratio (BVR) in epiphysis, primary spongiosa, and secondary spongiosa of proximal tibia; (3) citrate synthase (CS) activities of soleus.
The results were found as the following: (1)The body weights of Control group were significantly higher than two exercise groups. (2) The CS activities were significantly higher in Endurance group and Interval group than that of Control group. (3) The BVR was not significantly different among three groups. (4) The control group had significantly higher BMD in total femur than endurance group. But there was no difference in total tibia among groups. Additionally, there was a significant correlation between body weight and BMD or BMC. The less body weight caused by endurance and interval training might contribute to less effect on the bone development of the rats.
Keywords: bone development, exercise, endurance training, interval training
A confocal microscopic study on biofilm formed by Pseudomonas spp. isolated from lower respiratory tract infection from HIV and non-HIV populations
No full textCo-operative Development and Corporate Governance Structures in German Co-operatives: Problems and Perspectives
No full textIn Germany exist a large number of co-operatives that are engaged in a broad variety of business activities. Their organisational structure is determined by co-operative law and to a lesser degree by statutes or by-laws. As has been shown for German rural co-operatives by applying property rights theory the corporate governance structure as determined by law is formally still in existence, while it actually has been shifted in favour of the executive board. This has created an imbalance where on the one hand no longer any corporate governance is actually taking place while on the other hand members' interests may easily be neglected, because it is the executive board that determines the members' interests and also whether they have benefited from the cooperatives activities. In theory, suitable instruments to improve the corporate governance structure within such co-operative are the promotion plan and the promotion report as developed by Boettcher. However, for transaction cost reasons and due to the current attenuation of property rights, it is unlikely that these instruments will be implemented without outside pressure, e. g. through a change in cooperative law. A superior alternative to promotion plan and promotion report may be a combination of promotion task controlling and member oriented quality management. While such instruments would indeed improve members' ability to execute co-operative governance, managers' willingness to submit themselves to stronger governance may well be assumed to be very low. Taking into account the current distribution of property rights in big German co-operatives, managers will accept stronger governance structures only if some other incentives exist. An ongoing research project indicates that such incentives might exist in the realm of improved business opportunities due to better information about members' aims and needs. --
