Results 41 to 50 of about 336,502 (287)

Design Considerations for Large Detector Arrays on Submillimeter-wave Telescopes [PDF]

, 2000
The emerging technology of large (~ 10,000 pixel) submillimeter-wave bolometer arrays presents a novel optical design problem---how can such arrays be fed by diffraction-limited telescope optics where the primary mirror is less than 100,000 wavelengths ...
Stark, Antony A.
core   +4 more sources

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam, Anthony Siming Chen, Guido Herrmann   +2 more
wiley   +1 more source

Installation of pocket parks in mountainous cities: A case study on the nonlinear effect of the built environment on pocket park vitality in Chongqing, China

Ecological Indicators
Pocket parks are regarded as valuable tools for providing green activity spaces for citizens in high-density mountainous cities. However, existing research on the pocket park vitality has hardly paid attention to mountainous cities.
Zhonghu Zhang, Junyan Yang, Yi Shi, Huiya Yang, Daijun Chen, Chenyang Zhang, Zhihan Zhang, Xun Zhang   +7 more
doaj   +1 more source

A statistical model for estimating mean maximum urban heat island [PDF]

, 2003
Investigations concentrated on the urban heat island (UHI) in its strongest development during the diurnal cycle. Task includes development of statistical models in the heating and non-heating seasons using urban surface parameters (built-up and water ...
Balázs, Bernadett, Bottyán, Zsolt, Géczi, Róbert, Kovács, Péter, Unger, János   +4 more
core  

A Serendipitous Galaxy Cluster Survey with XMM: Expected Catalogue Properties and Scientific Applications [PDF]

, 1999
This paper describes a serendipitous galaxy cluster survey that we plan to conduct with the XMM X-ray satellite. We have modeled the expected properties of such a survey for three different cosmological models, using an extended Press-Schechter (Press ...
A. Kathy Romer, Andrew R. Liddle, Bartlett J. G., Blanchard A., Bond J. R., Chen L.-W., Ebeling H., Efstathiou G., Eke V. R., Fukazawa Y., Kaastra J. S., Lumsden S. L., Martinelli A., Mattig W., Oukbir J., Peacock J. A., Pedro T. P. Viana, Robert G. Mann, Rocchia R., Sadat R., Schindler S., Sunyaev R. A., van Haarlem M. P., Viana P. T. P., White S. D. M.   +24 more
core   +2 more sources

Sky view factor as predictor of solar availability on building façades [PDF]

Solar Energy, 2018
Solar availability on urban façades varies signifcantly, affected by obstructions by nearby buildings as well as orientation. A convenient way to evaluate their solar energy potential is deemed to facilitate the task of architects in increasing the use of photovoltaic systems and, thus solar energy generation in the urban environment.
Christina Chatzipoulka, Raphaël Compagnon, Jérôme Kaempf, Marialena Nikolopoulou   +3 more
openaire   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Studies on Variations in Sky View Factors of a Forest Using an All-Sky Photograph Model.

Journal of Japan Society of Hydrology and Water Resources, 1998
魚眼レンズの射影方式を参考に作成した全天写真モデルを用い,針葉樹林,非着葉状態の落葉樹林における全天開空率(P),太陽経路開空率(Q)を求め,樹高,植樹間隔が各森林のP,Qに与える影響,並びに樹木形状によるP-Q関係の相違を明らかにした.さらに森林方位の違いに基づく太陽経路開空率の変化について考察した.全天,太陽経路開空率は,それぞれ散乱放射,直達放射に対する森林の透過率として用いることができるため,森林内に透過する放射量を議論する上で重要な因子となる.両森林とも,樹高が低く,植樹間隔が広くなるほど全天,太陽経路開空率は上昇する.P-Q関係に及ぼす樹高の影響は,特に針葉樹林の太陽経路開空率に現れ,植樹間隔の影響は,針葉樹林,落葉樹林の全天開空率に認められた.P-Q関係は樹形によって異なり ...
Hironori NAKABAYASHI, Nobuyoshi ISHIKAWA, Yuji KODAMA   +2 more
openaire   +2 more sources

Deterministic Detection of Single Ion Implantation

Advanced Engineering Materials, EarlyView.
Focused ion beam implantation with high detection efficiencies will enable the rapid and scalable fabrication of advanced spin‐based technologies such as qubits. This work presents the detection efficiencies of a wide range of ions implanted into solid‐state hosts, with efficiencies of >90% recorded for ion species and substrate combinations of ...
Mason Adshead, Lok Kan Wan, Maddison Coke, Janet Jacobs, Nicholas F. L. Collins, Mark C. Rosamond, Richard J. Curry   +6 more
wiley   +1 more source

Application of the model ‘Heat Source’ to assess the influence of meteorological components on stream temperature and simulation accuracy under heat wave conditions

Meteorologische Zeitschrift, 2016
Stream temperature is one of the most important factors for aquatic organism, but also regulates drinking water quality, which are both threatened by temperature rises.
Heidelinde Trimmel, Clement Gangneux, Gerda Kalny, Philipp Weihs   +3 more
doaj   +1 more source