Development of Multi-Parameter Phased Array Weather Radar (MP-PAWR) and Early Detection of Torrential Rainfall and Tornado Risk

2019 ◽  
Vol 14 (2) ◽  
pp. 235-247 ◽  
Author(s):  
Nobuhiro Takahashi ◽  
Tomoo Ushio ◽  
Katsuhiro Nakagawa ◽  
Fumihiko Mizutani ◽  
Koyuru Iwanami ◽  
...  
Keyword(s):  
Local Governments ◽  
Phased Array ◽  
Three Dimensional ◽  
Weather Radar ◽  
Three Dimensional Model ◽  
Strategic Innovation ◽  
Numerical Predictions ◽  
Demonstration Experiment ◽  
The Social ◽  
Torrential Rainfall

This paper is an overview of a project concerned with “Early warning for torrential rainfall/tornado” under “Enhancement of Societal Resiliency against Natural Disasters,” which is one of eleven themes of the SIP (Cross-ministerial Strategic Innovation Promotion Program under the Council for Science, Technology and Innovation, the Cabinet Office, Government of Japan). The characteristics of the project are the development of a multi-parameter phased array weather radar (MP-PAWR) that enables the accomplishment of an accurate three-dimensional model of precipitation over 30 s within a 60 km radius. Various products developed ducts using MP-PAWR and other observations, and numerical predictions, are also discussed, with a demonstration experiment to provide early warnings for torrential rainfall and related disasters. For end users such as local governments and general citizens, the final goal of this project is the social implementation of these products.

scholarly journals Three-dimensional observations of heavy rainfall using a phased-array weather radar

2014 ◽  
Vol 34 (135) ◽  
pp. 4-9
Author(s):  
Fusako ISODA ◽  
Shinsuke SATOH ◽  
Hiroshi HANADO ◽  
Nobuhiro TAKAHASHI ◽  
Fumihiko MIZUTANI ◽  
...  
Keyword(s):  
Heavy Rainfall ◽  
Phased Array ◽  
Three Dimensional ◽  
Weather Radar

scholarly journals Written Text on Pakistani Vehicles: A Critical Discourse Analysis

2021 ◽  
Vol 1 (1) ◽  
pp. 40-57
Author(s):  
Sidra Mahmood
Keyword(s):  
Discourse Analysis ◽  
Critical Discourse Analysis ◽  
Social Issues ◽  
Three Dimensional ◽  
Critical Discourse ◽  
Motor Vehicles ◽  
Three Dimensional Model ◽  
Written Text ◽  
The People ◽  
The Social

Linguistically, the word ‘language’ has shifted into ‘discourse’ which is a social phenomenon not only to express the thoughts but also to reflect the mindset and contexts of a specific community. The purpose of this study is to examine the slogans written on Pakistani automobiles and to understand the logic behind the social and cultural affiliations of these slogans. Pakistani culture of the art of making pictures and written phrases, poetic verses and imperative sentences on vehicles is famous all over the world. The study has analysed the writings found on vehicles, and although these writings might look trivial on the automobiles, they address various social issues. The Three-Dimensional Model of Critical Discourse Analysis (CDA) by Fairclough (2001) is used as a theoretical framework that explains the study at three levels: lexical, syntactic patterns, interpretations, and social practices. The discourses written on the vehicles are characterised into different categories, which are life’s mission statements, loud messages, mind baffling messages, everyday life annoyances, provoking statements, and religious looms. Twenty images and pictures have been captured from vehicles as a random sample of this study. The results reveal the mindset behind these discourses. They are used to highlight social issues which Pakistan faces, being a developing country. In short, the study discloses the strong link between the vehicles and the people using them to convey messages to the society which can bring harmony among the public. The current study is limited to only Pakistani motor vehicles.

scholarly journals Development of a Reminiscence Therapy System for the Elderly Using the Integration of Virtual Reality and Augmented Reality

2019 ◽  
Vol 11 (17) ◽  
pp. 4792 ◽  
Author(s):  
Tsao ◽  
Shu ◽  
Lan
Keyword(s):  
Virtual Reality ◽  
Augmented Reality ◽  
Elderly People ◽  
Three Dimensional ◽  
Intermediate Stage ◽  
The Elderly ◽  
Integrated System ◽  
Three Dimensional Model ◽  
Reminiscence Therapy ◽  
The Social

Through virtual interaction and multivariate communication, the social interaction and life satisfaction of elderly people can be improved. This study integrated virtual reality (VR) and augmented reality (AR) to construct a visualized reminiscence therapy system, which provides not only reminiscence entertainment but may also aid in dementia prevention for healthy and sub-healthy (a therapeutic working concept which defines an intermediate stage between health and disease) elderly people. Images taken by an LG 360 CAM are primarily introduced into Power Director 360 as the guide interface. The special effects are joined using After Effects. With the model constructed under 3ds Max, the reminiscence therapy system integrated by virtual reality and augmented reality is then established by the Unity engine. It is shown that the developed 3D ancient building model can be used by Samsung Note 5 smartphones as well as VR CASE glasses to increase the immersive experience for the elderly. Through nostalgic elements triggered by the AR/VR three-dimensional model and video/audio interaction, the feasibility of our integrated system for reminiscence therapy is thus verified. Through reminiscence therapy, memories and thoughts can fully be activated as a therapy for elderly people. The visualized reality system developed in this study can further promote the social interactional satisfaction of elderly people.

scholarly journals High-Speed Volumetric Observation of a Wet Microburst Using X-Band Phased Array Weather Radar in Japan

2016 ◽  
Vol 144 (10) ◽  
pp. 3749-3765 ◽  
Author(s):  
Toru Adachi ◽  
Kenichi Kusunoki ◽  
Satoru Yoshida ◽  
Ken-ichiro Arai ◽  
Tomoo Ushio
Keyword(s):  
High Speed ◽  
Phased Array ◽  
Three Dimensional ◽  
Weather Radar ◽  
Ground Level ◽  
Dimensional Structure ◽  
Convection Cell ◽  
Low Level ◽  
X Band ◽  
Traffic Operation

This paper reports a high-speed volumetric observation of a wet microburst event using X-band phased array weather radar (PAWR) in Japan. On 10 September 2014, PAWR observed the three-dimensional structure of a convection cell, which had a vertical extent of 5–6 km and a horizontal dimension of 2–10 km, moving toward the east-northeast. At 2310 Japan standard time (JST), a precipitation core with a radar reflectivity of >40 dBZ appeared at 3–5 km above ground level. The core then increased in size and intensity and rapidly descended to the ground. During this time, a reflectivity notch associated with midlevel inflow was initially formed near the top of the precipitation core and, subsequently, at lower altitudes. A strong low-level outflow with a radial divergence of >4 × 10−3 s−1 appeared just below the notch at around 2321 JST. The outflow lasted for approximately 13 min and eventually disappeared after 2333 JST along with dissipation of the causative storm cell. These results suggest that, in addition to hydrometeor loading, evaporative cooling due to the entrainment of midlevel relatively dry air played an additional role in driving a strong downdraft. The preceding signatures including descending precipitation core, reflectivity notch, and midlevel convergence observed by PAWR are useful precursors to forecast the occurrence of low-level wind shear 5–10 min ahead, which is important for safe air traffic operation.

scholarly journals POWER THROUGH LINGUISTIC MODALITIES IN INDONESIAN PRESIDENTIAL SPEECHES

2019 ◽  
Vol 12 (1) ◽  
pp. 5-28
Author(s):  
Rosyida Ekawati
Keyword(s):  
Critical Discourse Analysis ◽  
Social Relations ◽  
Three Dimensional ◽  
Social Background ◽  
Linguistic Features ◽  
Three Dimensional Model ◽  
Modal Verbs ◽  
Expert Power ◽  
Legitimate Power ◽  
The Social

Language plays a crucial role in political speech. The use of a particular language canreflect or be influenced by the speaker’s ideology, power, cultural/social background, region, or social status. This paper is concerned with the relationship between language and power, specifically as manifested in the language used by an Indonesian president in international forums. It aims to uncover the power relations that were projected through the linguistic features of the president’s speech texts, particularly the use of modal verbs. Data for this paper are the speeches on the topics of peace and climate change delivered by Susilo Bambang Yudhoyono (SBY) in international forums during his first and second presidential terms. This paper’s analysis of linguistic modalities uses Fairclough’s three-dimensional model of critical discourse analysis (CDA) to answer its research questions. The results show that, in projecting his power, SBY used several linguistic modal verbs. From the context of the modality used it can be understood that the president conveyed his strategic desire to be himself as he tried to relate to the audience (as he assumed it to be) and construct an image of himself, of his audience, and of their relationship. The president produced discourse that embodied assumptions about the social relations between his leadership and the audience and asserted both his legitimate power as president and his expert power. Through the language used, SBY created, sustained, and replicated the fundamental inequalities and asymmetries in the forums he attended.

Thermally Actuated Droplet Motion on Chemically Homogeneous, Striated, and Defected Surfaces

2008 ◽  
Author(s):  
Jian-Zhang Chen
Keyword(s):  
Contact Angle ◽  
Contact Angle Hysteresis ◽  
Three Dimensional ◽  
Droplet Radius ◽  
Three Dimensional Model ◽  
Thermocapillary Force ◽  
Droplet Motion ◽  
Viscous Forces ◽  
Hydrophobic Coating ◽  
Numerical Predictions

Experiments have demonstrated thermocapillary actuation on uniformly grafted partial-wettable surfaces. Droplet mobilization only occurs above a threshold thermal gradient or threshold droplet radius [1]. We characterized the motion instead in terms of a threshold depinning force, which successfully describes all the liquids tested. Above the depinning transition, the droplet speed, which is controlled by thermocapillary, capillary and viscous forces, increases monotonically with this reduced force parameterization. These results agree well to numerical predictions of a generalized Ford and Nadim model by using two fitting parameters, the slip coefficient and the magnitude of contact angle hysteresis [2–3]. In this follow-up study, we developed a doubly grafted surface, on which alkyltrichlorosilane coated stripes are surrounded by a more hydrophobic coating, perfluoroctyl-trichlorosilane. The quality of alkyltrichlorosilane coated stripes was still good for the thermocapillary droplet actuation, in which droplets were driven on the alkyltrichlorosilane surface and confined by the perfluoroctyl-trichlorosilane. The experimental results are also well described by a derived approximate three-dimensional model equation, which resembles the parameterization. The droplets are driven by thermocapillary force and retarded by contact angle hysteretic force, represented as contact angle hysteresis. This contact angle hysteresis is caused by chemical heterogeneity, surface roughness etc [4]. In the last part of this presentation, we will also present the thermocapillary droplet motion on a designed defected surface, which shows a tiny defect can severely hinge the droplet.

Translating political ideology

Babel ◽  
2015 ◽  
Vol 61 (3) ◽  
pp. 394-410 ◽  
Author(s):  
Wu Guangjun ◽  
Zhang Huanyao
Keyword(s):  
Critical Discourse Analysis ◽  
Political Ideology ◽  
Three Dimensional ◽  
Translation Studies ◽  
Chinese Government ◽  
Three Dimensional Model ◽  
Translation Strategies ◽  
The Social ◽  
News Headlines

Ideology is a major issue in Translation Studies. With a case study of the Chinese translations of English news headlines concerning the South China Sea disputes on the website of www.ftchinese.com, this paper attempts to provide insights into the translation of ideologies in news in the Chinese context. In the theoretical framework of critical discourse analysis, the ideological factors underlying the disparity between the English news headlines and their Chinese translations are explored. The three-dimensional model of analysis put forward by Fairclough is modified and adopted in this paper as the basic steps of analysis: firstly, describe the differences between the original and their translations; secondly, associate them with the social reality; finally, account for those differences. In addition, to demonstrate how translators maneuvered to reach a compromise with the antagonistic ideologies which may set difficulties either for the news to win the acceptance of Chinese online readers or pass the Chinese government censorship, this paper offers an analysis of the translation strategies adopted in those Chinese translations, such as substitution, omission as well as the more subtle strategies, including changes of modality and actor. It is found that in the Chinese translations of the English news headlines, translators’ priority is on producing translations suitable to target readers and censors' ideology, rather than linguistic equivalents. Therefore, translating ideology-loaded texts adds a new way to understand translation and ideological explorations in Translation Studies have great potentials.

Precipitation Nowcasting with Three-Dimensional Space–Time Extrapolation of Dense and Frequent Phased-Array Weather Radar Observations

2016 ◽  
Vol 31 (1) ◽  
pp. 329-340 ◽  
Author(s):  
Shigenori Otsuka ◽  
Gulanbaier Tuerhong ◽  
Ryota Kikuchi ◽  
Yoshikazu Kitano ◽  
Yusuke Taniguchi ◽  
...  
Keyword(s):  
Phased Array ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Weather Radar ◽  
Convective Precipitation ◽  
Dimensional Space Time ◽  
3D Volume ◽  
New Generation ◽  
Time Extrapolation ◽  
Three Dimensional Space

Abstract The phased-array weather radar (PAWR) is a new-generation weather radar that can make a 100-m-resolution three-dimensional (3D) volume scan every 30 s for 100 vertical levels, producing ~100 times more data than the conventional parabolic-antenna radar with a volume scan typically made every 5 min for 15 scan levels. This study takes advantage of orders of magnitude more rapid and dense observations by PAWR and explores high-precision nowcasting of 3D evolution at 1–10-km scales up to several minutes, which are compared with conventional horizontal two-dimensional (2D) nowcasting typically at O(100) km scales up to 1–6 h. A new 3D precipitation extrapolation system was designed to enhance a conventional algorithm for dense and rapid PAWR volume scans. Experiments show that the 3D extrapolation successfully captured vertical motions of convective precipitation cores and outperformed 2D nowcasting with both simulated and real PAWR data.

scholarly journals Study on Water Level Prediction Using Observational Data from a Multi-Parameter Phased Array Weather Radar

2021 ◽  
Vol 16 (3) ◽  
pp. 410-414
Author(s):  
Kazuhiro Yoshimi ◽  
Masakazu Wada ◽  
Yukio Hiraoka ◽  
◽  
Keyword(s):  
Water Level ◽  
Observational Data ◽  
Urban Areas ◽  
High Speed ◽  
Phased Array ◽  
Three Dimensional ◽  
Weather Radar ◽  
Water Levels ◽  
Hydrological Processes ◽  
Basic Study

A dual-polarization, phased array weather radar, also known as the multi-parameter phased array weather radar (MP-PAWR), was developed by the Japanese Cross-ministerial Strategic Innovation Promotion (SIP) Program. Since this weather radar has been made into an active phased array, three-dimensional observation of weather phenomena can be realized at high speed by means of electrical scanning in the elevation direction and mechanical scanning in the azimuth direction. This is expected to shed light on hydrological processes in river basins, such as those of urban rivers, and improve prediction accuracy. In this study, river water levels in urban areas were estimated from vertically integrated liquid (VIL) Nowcast water content results, a meteorological forecasting method based on the three-dimensional observation MP-PAWR data, using a synthesized rational formula. A runoff analysis for urban basins was carried out using the rainfall forecast results based on MP-PAWR observational data. Since it is known that this formula can be used to deliver a rapid response time for runoff phenomena in the basin, it is possible to fully exploit the features of the MP-PAWR. This study shows how MP-PAWR is used in a series of hydrological processes. In this paper, we report the results of a basic study on water level predictions based on MP-PAWR observational data and also present future prospects for the use of this technology.

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