Search Results - "KAWAI, Kei"

Robust Screens for Noncompetitive Bidding in Procurement Auctions by Chassang, Sylvain, Kawai, Kei, Nakabayashi, Jun, Ortner, Juan

“…We document a novel bidding pattern observed in procurement auctions from Japan: winning bids tend to be isolated, and there is a missing mass of close losing…”
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Inferring Strategic Voting by Kawai, Kei, Watanabe, Yasutora

“…We estimate a model of strategic voting and quantify the impact it has on election outcomes. Because the model exhibits multiplicity of outcomes, we adopt a…”
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Dominant Role of Arctic Dust With High Ice Nucleating Ability in the Arctic Lower Troposphere by Kawai, Kei, Matsui, Hitoshi, Tobo, Yutaka

“…Recent observations show that dust emitted within the Arctic (Arctic dust) has a remarkably high ice nucleating ability, especially between −20°C and −5°C, but…”
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Using Bid Rotation and Incumbency to Detect Collusion: A Regression Discontinuity Approach by Kawai, Kei, Nakabayashi, Jun, Ortner, Juan, Chassang, Sylvain

“…Cartels participating in procurement auctions frequently use bid rotation or prioritize incumbents to allocate contracts. However, establishing a link between…”
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Vertical distributions of airborne microorganisms over Asian dust source region of Taklimakan and Gobi Desert by Maki, Teruya, Bin, Chen, Kai, Kenji, Kawai, Kei, Fujita, Kazuyuki, Ohara, Kazuma, Kobayashi, Fumihisa, Davaanyam, Enkhbaatar, Noda, Jun, Minamoto, Yuki, Shi, Guangyu, Hasegawa, Hiroshi, Iwasaka, Yasunobu

“…Airborne microorganisms transported by dust events from Asian Deserts influence climate changes, ecosystem dynamics and human health in the westerly-wind…”
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Variations in airborne bacterial communities at high altitudes over the Noto Peninsula (Japan) in response to Asian dust events by Maki, Teruya, Hara, Kazutaka, Iwata, Ayumu, Lee, Kevin C, Kawai, Kei, Kai, Kenji, Kobayashi, Fumihisa, Pointing, Stephen B, Archer, Stephen, Hasegawa, Hiroshi, Iwasaka, Yasunobu

“…Aerosol particles, including airborne microorganisms, are transported through the free troposphere from the Asian continental area to the downwind area in East…”
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Increasing Arctic dust suppresses the reduction of ice nucleation in the Arctic lower troposphere by warming by Matsui, Hitoshi, Kawai, Kei, Tobo, Yutaka, Iizuka, Yoshinori, Matoba, Sumito

“…Ice nucleating particles (INPs) affect the cloud radiative budget in the rapidly warming Arctic by changing the cloud liquid/ice phase balance. Dust emitted in…”
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Voter Turnout and Preference Aggregation by Kawai, Kei, Toyama, Yuta, Watanabe, Yasutora

“…We study how voter turnout affects the aggregation of preferences in elections. Under voluntary voting, election outcomes disproportionately aggregate the…”
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High Sensitivity of Asian Dust Emission, Transport, and Climate Impacts to Threshold Friction Velocity by Kawai, Kei, Matsui, Hitoshi, Kimura, Reiji, Shinoda, Masato

“…The emission of Asian dust in arid regions of East Asia is controlled by many land surface parameters such as snow cover, soil moisture, and vegetation. In…”
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Lidar Network Observation of Dust Layer Development over the Gobi Desert in Association with a Cold Frontal System on 22-23 May 2013 by KAWAI, Kei, KAI, Kenji, JIN, Yoshitaka, SUGIMOTO, Nobuo, BATDORJ, Dashdondog

“…The Gobi Desert is one of the major sources of Asian dust, which influences the climate system both directly and indirectly through its long-range transport by…”
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Mass-Extinction Conversion Factor (MECF) over the Gobi Desert by a Tethered-balloon-based OPC and a Ceilometer by Kai, Kenji, Kawai, Kei, Ohara, Kazuma, Minamoto, Yuki, Jin, Yoshitaka, Maki, Teruya, Noda, Jun, Shiina, Tatsuo, Davaanyam, Enkhbaatar

“…The mass concentration of Asian dust in the atmosphere is an essential parameter of the atmospheric environment in East Asia. In April 2016, we conducted…”
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Dust Hotspot in the Gobi Desert: A Field Survey in April 2019 by Kai, Kenji, Kawai, Kei, Ito, Atsuya, Aizawa, Yuki, Minamoto, Yuki, Munkhjargal, Erdenebadrakh, Davaanyam, Enkhbaatar

“…The Gobi Desert is a dominant source of dust on the Asian continent. In this study, we analysed the characteristics of a typical Mongolian dust storm and…”
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Study on the Asian dust emitted from the hotspot in the Gobi Desert by Kai, Kenji, Kawai, Kei, Jin, Yoshitaka, Shimizu, Atsushi, Sugimoto, Nobuo, Maki, Teruya, Noda, Jun, Shiina, Tatsuo, Davaanyam, Enkhbaatar, Batdorj, Dashdondog

“…We have studied the Asian dust emitted from a hotspot in the Gobi Desert by a lidar network, analyses of Himawari-8 Dust RGB and meteorological fields, and a…”
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Surface warming in Svalbard may have led to increases in highly active ice-nucleating particles by Tobo, Yutaka, Adachi, Kouji, Kawai, Kei, Matsui, Hitoshi, Ohata, Sho, Oshima, Naga, Kondo, Yutaka, Hermansen, Ove, Uchida, Masaki, Inoue, Jun, Koike, Makoto

“…The roles of Arctic aerosols as ice-nucleating particles remain poorly understood, even though their effects on cloud microphysics are crucial for assessing…”
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Large-Scale Dust Event in East Asia in May 2017: Dust Emission and Transport from Multiple Source Regions by Minamoto, Yuki, Nakamura, Kotaro, Wang, Minrui, Kawai, Kei, Ohara, Kazuma, Noda, Jun, Davaanyam, Enkhbaatar, Sugimoto, Nobuo, Kai, Kenji

“…A large-scale dust event occurred in East Asia during early May 2017, and transported dust was measured all over Japan. We performed an analysis of the entire…”
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Lidar network observation of dust layer evolution over the Gobi Desert in MAY 2013 by Kawai, Kei, Kai, Kenji, Jin, Yoshitaka, Sugimoto, Nobuo, Batdorj, Dashdondog

“…A lidar network captured the evolution of a dust layer in the Gobi Desert on 22–23 May 2013. The lidar network consists of a ceilometer and two AD-Net lidars…”
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Northeast Asian Dust Transport: A Case Study of a Dust Storm Event from 28 March to 2 April 2012 by Tsedendamba, Purevsuren, Dulam, Jugder, Baba, Kenji, Hagiwara, Katsuro, Noda, Jun, Kawai, Kei, Sumiya, Ganzorig, McCarthy, Christopher, Kai, Kenji, Hoshino, Buho

“…The distribution and transport of windblown dust that occurred in Northeast Asia from 28 March to 2 April 2012 was investigated. Data of particulate matter…”
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Atmospheric dust as a possible survival factor for bioaerosols by Noda, Jun, Tomizawa, Sota, Hoshino, Buho, Munkhjargal, Erdenebadrakh, Kawai, Kei, Kai, Kenji

“…In this study, we present some of the laboratory measurements of the viability of bioaerosols together with different environmental dust to understand the…”
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Ceilometer Observation of a Dust Event in the Gobi Desert on 29–30 April 2015: Sudden Arrival of a Developed Dust Storm and Trapping of Dust Within an Inversion Layer by Kawai, Kei, Nishio, Yuta, Kai, Kenji, Noda, Jun, Munkhjargal, Erdenebadrakh, Shinoda, Masato, Sugimoto, Nobuo, Shimizu, Atsushi, Davaanyam, Enkhbaatar, Batdorj, Dashdondog

“…Asian dust is transported over a long range via the mid-latitude westerlies when dust is lifted to the free troposphere over the source regions, whereas dust…”
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Large-scale dust event in East Asia, as revealed by the Himawari-8 DUST RGB, lidar network observations, and field survey by Kai, Kenji, Minamoto, Yuki, Nakamura, Kotaro, Wang, Minrui, Kawai, Kei, Ohara, Kazuma, Noda, Jun, Maki, Teruya, Davaanyam, E., Sugimoto, Nobuo

“…A large-scale dust event occurred in East Asia during early May 2017, and transported dust was measured all over Japan. We performed an analysis of the entire…”
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