{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1390001205689783296.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.14848/esj.esj52.0.134.0"}},{"identifier":{"@type":"NAID","@value":"130007010861"}}],"dc:title":[{"@language":"en","@value":"Illuminance at nighttime and environment in installed area of street lighting, 'bouhan-tou', for preventing crime: Evaluation of night illuminance and environmental factors in macro research area"},{"@language":"ja","@value":"街路照明（防犯灯）の設置域環境と夜間照度状況_---_マクロ調査域での環境要因と夜観照度の評価_---_"}],"description":[{"type":"abstract","notation":[{"@language":"ja","@value":"大阪府は，‘ひったくり’犯罪件数の全国ワースト記録を現在保持しており，その‘ひったくり，犯罪の半数以上が夜間に発生している。本研究では，大阪府南部地域（堺市ほか4市1町）での“街路照明（防犯灯）設置域環境と夜間照度状況”に関する照明学会関西支部による調査・観測に基づき，マクロ調査域（区域：主要駅付近）における，各単位調査域‘スパン（防犯灯器具直下を両端とする道路上の夜間照度の調査・観測域）’を夜間時の明るさによって類別し，防犯灯設置域での環境要因を夜間照度［とくに，‘スパン’内水平面での修正算術平均照度（<i>Eh</i>Am，lx）］に関係づけて詳細に評価した。　夜間時における明るさによって，調査区域の‘スパン’は，6グループ一大変明るい［型：L（G-II）］，明るい［L（G-I）］，やや暗い［L（D）］，やや明るい［D（L）］，暗い［D（G-II）］，大変暗い［D（G-I）］一‘スパン’に類別できた。それら6類別スパンでの<i>Eh</i>Amの度数分布は対数正規分布に適合し，．したがって，それらの平均<i>Eh</i>Am値が幾何平均によってえられた。L（G-II）型スパンの平均<i>Eh</i>Amは，防犯灯の設置主要光源である高圧水銀ランプと‘広告照明’によって非常に高い値（15.60 lx）に，いっぽう，D（G-I）型スパンでのその値は，‘防犯灯（主要光源20W蛍光ランプ）の保守管理不良’と‘街路・庭の高木’によって非常に低値（1.43 lx）になった。‘防犯灯の保守管鐘不良’が改善すれば，D（G-II）型スパンはL（G-I）型にもなりうることが判明した。L（D），D（L）型スパンはほぼ同じ防犯灯設置域光環境下にあり，それら環境要因（‘屋外照明’，‘街路・庭の高木’，‘駐車車両’など）によって夜間時でのスパン内明るさに‘不均斉’が多く生じた。この‘不均斉’の定量的解明時，今後の課題となろう。"}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1410009221114587393","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000392028237"}],"foaf:name":[{"@language":"en","@value":"Miyaji Ken-ichi"},{"@language":"ja","@value":"宮地 謙一"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Shin-knaoka Education 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lightness"},{"@id":"https://cir.nii.ac.jp/all?q=%E8%A1%97%E8%B7%AF%E7%85%A7%E6%98%8E%EF%BC%88%E9%98%B2%E7%8A%AF%E7%81%AF%EF%BC%89","dc:title":"街路照明（防犯灯）"},{"@id":"https://cir.nii.ac.jp/all?q=%E5%A4%9C%E9%96%93%E7%85%A7%E5%BA%A6","dc:title":"夜間照度"},{"@id":"https://cir.nii.ac.jp/all?q=%E7%92%B0%E5%A2%83%E8%A6%81%E5%9B%A0","dc:title":"環境要因"},{"@id":"https://cir.nii.ac.jp/all?q=%E3%83%9E%E3%82%AF%E3%83%AD%E8%AA%BF%E6%9F%BB%E5%9F%9F","dc:title":"マクロ調査域"},{"@id":"https://cir.nii.ac.jp/all?q=%E6%98%8E%E3%82%8B%E3%81%95%E3%81%AB%E3%82%88%E3%82%8B%E9%A1%9E%E5%88%A5","dc:title":"明るさによる類別"}],"dataSourceIdentifier":[{"@type":"JALC","@value":"oai:japanlinkcenter.org:1003401484"},{"@type":"CIA","@value":"130007010861"}]}