- 著者
- Peiming Wu Dodi Ardiansyah Satoru Yokoi Shuichi Mori Fadli Syamsudin Kunio Yoneyama
- 出版者
- Meteorological Society of Japan
- 雑誌
- SOLA (ISSN:13496476)
- 巻号頁・発行日
- vol.13, pp.36-40, 2017 (Released:2017-03-24)
- 参考文献数
- 17
- 被引用文献数
- 9 16
This study examined the impact of an active phase of the Madden–Julian Oscillation (MJO) on a torrential rain event that occurred on the western coast of Sumatra Island on 12 December 2015, using surface meteorological observations, meteorological radar observations, and balloon sounding data obtained from the pre-Years of the Maritime Continent field campaign. Strong MJO activity took place in mid-December 2015 into January 2016. Radar observations revealed that a convergence and convective cloud merger of mesoscale convective systems from an eastward propagating MJO and westward moving diurnal convection over the western coast of the island was the immediate cause of the torrential rain. An investigation of the occurrence of convection over the island showed that both westward moving diurnal convection from the mountains and eastward propagating convection from the Indian Ocean occurred on 12 December, because the westerly winds in the lower troposphere associated with the MJO were only just initiated and were weak on the day. The results suggest that the leading edge of the MJO westerly wind bursts provided favorable conditions for an active phase of the MJO to work with the westward moving diurnal convection and cause torrential rain on the western coast of Sumatra Island.
- 著者
- Ardiansyah
- 出版者
- Japan Oil Chemists' Society
- 雑誌
- Journal of Oleo Science (ISSN:13458957)
- 巻号頁・発行日
- vol.70, no.11, pp.1565-1574, 2021 (Released:2021-11-03)
- 参考文献数
- 63
- 被引用文献数
- 3
Rice bran is a by-product of the rice milling process, which refers to the processing of brown rice into polished rice. It contains a considerable amount of functional bioactive compounds. However, the utilization of these compounds is limited and calls for an effort to ferment rice bran. One of the methods that can significantly increase the added value of rice bran as well as its bioactivity is the solid-state fermentation. It can also be one of the strategies that help in the production of rice bran as a functional ingredient with higher bioactivity for health promotion.
1 0 0 0 顔向き情報による興味領域収集システム
- 著者
- 王 笑寒 Oky Dicky Ardiansyah PRIMA 伊藤 久祥 今渕 貴志 蛇穴 祐稀
- 雑誌
- 第77回全国大会講演論文集
- 巻号頁・発行日
- vol.2015, no.1, pp.705-706, 2015-03-17
近年,パンフレットや商品などに対する顧客の注目部分を計測し,その分析結果をマーケティングへ応用することが盛んに行われている.注目部分の計測において,複数人の視線を同時に推定したり,常に移動する人物の視線を追尾することは困難である.本研究では,単眼カメラを利用して,様々な照明条件下での複数人の顔向きを推定し,3次元仮想空間においてそれぞれの顔向きのベクトルを延長して対象の商品にヒートマップを描画する技術を開発し,実時間における顧客の注目領域を収集するシステムの開発を試みる.実験の結果,通常の65°画角を持つWebカメラにより最大3人の顔向きと注目領域のヒートマップを実時間で生成することに成功した.
1 0 0 0 IR インドネシアジャワ島南央部における高地の天水農業の収量とグローバル指数との関係について
- 著者
- NUGROHO Bayu D.A. PRIMA Ardiansyah O.D. KANNO Hiromitsu SAMESHIMA Ryoji FUJII Hiroshi LOPEZ Larry CM.
- 出版者
- JAPAN CLIMATOLOGY SEMINAR
- 雑誌
- JAPANESE PROGRESS IN CLIMATOLOGY (ISSN:00753467)
- 巻号頁・発行日
- vol.2013, pp.1-10, 2013-12
Although there has been a high interest to investigate the relationship between climate and crop yields in Indonesia, little evidence is available for crops in highland of the country. This study evaluates the relationships between global climate indices (Southern Oscillation Index, SOI; sea surface temperature, SST) and rain-fed crop yields in Gunungkidul district, highland of South-Central Java. Principal Component Analysis (PCA) approach was used to summarize the averaged SSTs during planting season for the El Nino monitoring regions: IOBW (Indian Ocean Basin-Wide), Nino.West and Niiio.3. Crops yield of each sub-district of the area was detrended using a 5-year moving average to enhance reliability of the data. For some sub-districts, the first principal component of SSTs was negatively correlated to crop yield residuals of corn and soybean while SOI was positively correlated to that of corn and dryland paddy.インドネシアにおいては気候と農作物収量との関係に高い関心が寄せられているが,高地農業に関しては進展が少ない状況である。本研究では,南方振動指数(SOI)および海水面温度(SST)のグローバル指数とジャワ島南央部に位置するグヌンキドウール地区における天水農作物収量との関係を分析した。3つの地域(IOBW, Niňo.WestおよびNiňo.3)のSSTに対して主成分分折(PCA)を適用し,その代表となる主成分を抽出した。各地域の作物収量データの信頼性を向上させるために,元の収量データとその5年移動平均値から残差を計算し,正規化した。いくつかの地域では,SSTの第1主成分とトウモロコシ・ダイズの残差との間に負の相関を示し,またSOIはトウモロコシ・陸稲の残差との間に正の相関を示すことが明らかとなった。