The Important Role of Antenna Pattern Characterization in the Absolute Calibration of GNSS-R Measurements

Author(s):  
Tianlin Wang ◽  
Christopher Ruf ◽  
Darren McKague ◽  
Anthony Russel ◽  
Andrew O'Brien ◽  
...  
2016 ◽  
Vol 1 (1) ◽  
pp. 16-38
Author(s):  
Jonathan Octavianus

As every epoch there are there a transition time, on Old Testament like Moses with Joshua, Joshua selected by God an supported fully by Moses, Conversely Moses have liberally to be changed. Like Elijah to Elisha too.Pattern on New Testament there are an examples of transition time too, like Jesus Christ to His Disciples, an transition from Paul to his successor Timothy. This is a heart and soul a big leader, and shall all leadership owners shepherd in church, Christian institution, etc.Which most be remembered in transition of leadership, that people of God leadership, about who will lead, who continue leadership, like a principle in biblical, hence a role of God, is determinant an anoint man which be selected the absolute God choice and constitute all other, but a succession router leader is which have been selected His own. An can be anointed in front of believers.


Author(s):  
Myoungwon Jeon ◽  
Volker Bromm ◽  
Gurtina Besla ◽  
Jinmi Yoon ◽  
Yumi Choi

Abstract CEMP-no stars, a subset of carbon enhanced metal poor (CEMP) stars ($\rm [C/Fe]\ge 0.7$ and $\rm [Fe/H]\lesssim -1$) have been discovered in ultra-faint dwarf (UFD) galaxies, with Mvir ≈ 108 M⊙ and M* ≈ 103 − 104 M⊙ at z = 0, as well as in the halo of the Milky Way (MW). These CEMP-no stars are local fossils that may reflect the properties of the first (Pop III) and second (Pop II) generation of stars. However, cosmological simulations have struggled to reproduce the observed level of carbon enhancement of the known CEMP-no stars. Here we present new cosmological hydrodynamic zoom-in simulations of isolated UFDs that achieve a gas mass resolution of mgas ≈ 60 M⊙. We include enrichment from Pop III faint supernovae (SNe), with ESN = 0.6 × 1051 erg, to understand the origin of CEMP-no stars. We confirm that Pop III and Pop II stars are mainly responsible for the formation of CEMP and C-normal stars respectively. New to this study, we find that a majority of CEMP-no stars in the observed UFDs and the MW halo can be explained by Pop III SNe with normal explosion energy (ESN = 1.2 × 1051 erg) and Pop II enrichment, but faint SNe might also be needed to produce CEMP-no stars with $\rm [C/Fe]\gtrsim 2$, corresponding to the absolute carbon abundance of $\rm A(C)\gtrsim 6.0$. Furthermore, we find that while we create CEMP-no stars with high carbon ratio $\rm [C/Fe]\approx 3-4$, by adopting faint SNe, it is still challenging to reproduce CEMP-no stars with extreme level of carbon abundance of $\rm A(C)\approx 7.0-7.5$, observed both in the MW halo and UFDs.


2020 ◽  
Vol 3 (1) ◽  
pp. 349-357 ◽  
Author(s):  
Daina Habdankaitė

AbstractThe article investigates Meillassoux’s notion of the absolute in relationship with the Kantian and Hegelian philosophical systems. The absolute, as independent of subjective consciousness, is showcased as the meeting point of speculation and fiction. By looking into Meillassoux’s notions of speculation and some works of weird fiction, it is argued that the significant role of imagination as well as a deferred temporality is what facilitates the discussion of both speculation and fiction as faculties able to transcend the limitations that are projected by the correlationist mind. Through a reading of Lovecraftian fiction, both the strong and weak points of Meillassoux’s argumentation in After Finitude and Science Fiction and Extro-Science Fiction are identified, proving the latter to be a less successful way of grasping the chaotic real.


2006 ◽  
Vol 71 (3) ◽  
pp. 1119-1130 ◽  
Author(s):  
Rosa García ◽  
José M. Seco ◽  
Saulo A. Vázquez ◽  
Emilio Quiñoá ◽  
Ricardo Riguera

1983 ◽  
Vol 22 (10) ◽  
pp. 1551 ◽  
Author(s):  
R. McAdams ◽  
S. K. Srivastava

2018 ◽  
Vol 10 (11) ◽  
pp. 1679 ◽  
Author(s):  
Jean-François Crétaux ◽  
Muriel Bergé-Nguyen ◽  
Stephane Calmant ◽  
Nurzat Jamangulova ◽  
Rysbek Satylkanov ◽  
...  

Calibration/Validation (C/V) studies using sites in the oceans have a long history and protocols are well established. Over lakes, C/V allows addressing problems such as the performance of the various retracking algorithms and evaluating the accuracy of the geophysical corrections for continental waters. This is achievable when measurements of specific and numerous field campaigns and a ground permanent network of level gauges and weather stations are processed. C/V consists of installation of permanent sites (weather stations, limnigraphs, and GPS reference points) and the organization of regular field campaigns. The lake Issykkul serves as permanent site of C/V, for a multi-mission purpose. The objective of this paper is to calculate the altimeter biases of Jason-3 and Sentinel-3A, both belonging to an operational satellite system which is used for the long-term monitoring of lake level variations. We have also determined the accuracy of the altimeters of these two satellites, through a comparison analysis with in situ data. In 2016 and 2017, three campaigns have been organized over this lake in order to estimate the absolute bias of the nadir altimeter onboard the Jason-3 and Sentinel-3A. The fieldwork consisted of measuring water height using a GPS system, carried on a boat, along the track of the altimeter satellite across the lake. It was performed at the time of the pass of the altimeter. Absolute altimeter biases were calculated by averaging the water height differences along the pass of the satellite (GPS from the boat system versus altimetry). Jason-3 operates in a Low Resolution Mode (LRM), while the Sentinel-3A operates in Synthetic Aperture Radar (SAR) mode. In this study we found that the absolute biases measured for Jason-3 were −28 ± 40 mm with the Ocean retracker and 206 ± 30 mm with the Ice-1 retracker. The biases for Sentinel-3A were −14 ± 20 mm with the Samosa (Ocean like) retracker and 285 ± 20 mm with the OCOG (Ice-1-like) retracker. We have also evaluated the accuracy of these two altimeters over Lake Issykkul which reached to 3 cm, for both the instruments, using the Ocean retracker.


2020 ◽  
Vol 6 (1) ◽  
pp. 3-27 ◽  
Author(s):  
Dimitris Eleftheriotis

This article reframes the critical discourse around the ‘Greek Weird Wave’ using an approach informed by theoretical work on cosmopolitanism. Focussing on Yorgos Lanthimos’s Dogtooth (2009) and Athena-Rachel Tsangari’s Attenberg (2010), the critical interpretation of the role of the family is radically rethought. I argue that the privileging of allegorical readings of the family in the Weird Wave films constitutes a form of critical denial of the deeply problematic and specifically Greek ways in which the family (dys)functions. I challenge the absolute and exclusive power that the Greek ‘crisis’ holds over interpretations and evaluations of Weird Wave films, which discursively displaces the problems of the family to broader sociopolitical frameworks. In reclaiming the importance of literal readings of the films, I reposition them as manifestations of a specific cosmopolitan disposition, that of introspection, a process of self-examination that overcomes denial. In turn, the critical reframing of the films outlines the contours of a complex agonistics of introspective cosmopolitanism, an inward investigative disposition that is dialectically linked to cosmopolitan positioning. Jean François Lyotard’s 1989 theorization of the oikos (home/house) provides a conceptual model for understanding the family (oikogeneia), which, in its Greek specificities, is central to the films under discussion.


2010 ◽  
Vol 31 (01) ◽  
pp. 107-131 ◽  
Author(s):  
Rocío Zambrana

The Science of Logic is perhaps Hegel's most notoriously impenetrable work. Despite well over a century of commentaries as well as the recent proliferation of scholarship, there exists little agreement concerning the text, whether with regard to particular details or the project of speculative logic in general. Nonetheless, the Logic has often been regarded as exemplifying totalizing metaphysics at its worst. Contemporary philosophers concerned with overcoming metaphysics have thus sought to show not only the incoherence of speculative logic but also the perils of Hegel's supposedly totalizing philosophy. In contrast, showing the continuity between Kant and Hegel has been the strategy for establishing a ‘non-metaphysical’ view of Hegel's speculative logic. Against readings of Hegel as a metaphysical monist who defends the reality of the Absolute Idea developing in nature and spirit, speculative logic is presented as the absolute-idealist successor to Kantian transcendental logic. Hegel's speculative logic is an ‘idealist logic’, since it aims at expounding the conditions necessary for the determinacy of any possible object of thought. Speculative logic thus clarities that experience is dependent on non-empirical concepts and, ultimately, on selfconsciousness. Along this interpretative line, Hegel's Science of Logic offers an account of thinking as a norm-based activity, and of concepts as rules for fixing determinacy. The great insight of Hegel's Logic is, on this view, twofold. First, Hegel's notion of the concept [der Begriff] is understood as a holistic-inferential system of logical concepts, since it provides an account of conceptual content as determined by every other possible content. Second, Hegel's analysis of the actualization of the concept — of the concept that has ‘made itself the foundation’, in Hegel's obscure phrasing — provides an account of the fundamental role of authority involved in the process of fixing determinacy. To be bound to a rule is to acknowledge it as having authority over us and at the same time to institute it as authoritative over the states of affairs that we seek to determine. That Hegel spoke of the freedom of the concept is, therefore, crucial. It suggests that determinacy is ultimately a matter of the authorization of reason, of establishing one way of fixing intelligibility over against others.


2013 ◽  
Vol 23 ◽  
pp. 451-453 ◽  
Author(s):  
COSTANTINO SIGISMONDI

The role of Venus and Mercury transits is crucial to know the past history of the solar diameter. Through the W parameter, the logarithmic derivative of the radius with respect to the luminosity, the past values of the solar luminosity can be recovered. The black drop phenomenon affects the evaluation of the instants of internal and external contacts between the planetary disk and the solar limb. With these observed instants compared with the ephemerides the value of the solar diameter is recovered. The black drop and seeing effects are overcome with two fitting circles, to Venus and to the Sun, drawn in the undistorted part of the image. The corrections of ephemerides due to the atmospheric refraction will also be taken into account. The forthcoming transit of Venus will allow an accuracy on the diameter of the Sun better than 0.01 arcsec, with good images of the ingress and of the egress taken each second. Chinese solar observatories are in the optimal conditions to obtain valuable data for the measurement of the solar diameter with the Venus transit of 5/6 June 2012 with an unprecedented accuracy, and with absolute calibration given by the ephemerides.


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