Passive millimeter-wave (PMMW) radiation of Kelvin wake is helpful for ship detection. A local coordinate system is established at each small facet to calculate the brightness temperature of Kelvin Wake. The influence of ship speed and draft on brightness temperature of Kelvin wake is simulated. An outdoor experiment was conducted to measure the brightness temperature of Kelvin wake. The experiment result verifies the theory and simulation.
The purpose of this paper is to take a diachronic approach and survey the pre-Roman and Roman evidence of communal feasting in Macedonia, in order to understand how such form of social action changed after a well-established form executed by the Macedonian monarchy came under the challenges posed by the years of turmoil following Rome's conquest. The basic premise of this paper is that feasting is a politically-embedded form of social occasion and naturally subject to manipulation. In turn, the scale of communal feasting would reflect different strategies of the manipulating parties, and in particular one can distinguish from the strongly aspirational type of communal feasting aimed at creating national and even sovereign symbolisms from the transactional types of communal feasting in which the host and the participants partake in the small-group manuvers of more limited socio-political implications. Evidence highlighted in this paper include the well-known Hagios Athanasios symposium frieze, the honorific inscription for Apollonios son of Apollonios from Kalindoia (SEG 35.744), and a sample of Macedonian inscriptions concerning local cultic associations and the Macedonian koinon.
Applying an absorbing coating to the surface of an aircraft is a widely used target
stealth method. For high-speed motion vehicles, the temperature of the stealth coating profile is
non-uniform due to the "aerodynamic effect", which affects the millimeter wave radiation of the
target. In this paper, we study the calculation method of millimeter wave radiation of stealth
coating for sports aircraft. Firs
tly, the temperature variation model of the coating under different
boundary conditions was analyzed. Then, the coating brightness temperature under non-uniform
temperature distribution was simulated and calcul
ated, and the brightness temperature difference
of the coating with or without
temperature gradient was analyzed. Finally, the millimeter wave
radiation measurement experiment of the coat
ing verified the accuracy of the simulation
calculation, and the millimeter-wave radiation ch
aracteristics of the non-uniform temperature
stealth coating are obtained.
Xue B, Hu S, Zou L, Cheng J. The Value of Paraphrase for Knowledge Base Predicates, in The Thirty-Fourth AAAI Conference on Artificial Intelligence, AAAI 2020, The Thirty-Second Innovative Applications of Artificial Intelligence Conference, IAAI 2020, The Tenth AAAI Symposium on Educational Advances in Artificial Intelligence, EAAI 2020, Ne. AAAI Press; 2020:9346–9353.