نتایج جستجو برای: anselin local morans
تعداد نتایج: 531955 فیلتر نتایج به سال:
Spatial autocorrelation is a concept that helps to define the field of spatial analysis. It is central to studies using spatial statistics and spatial econometrics. In this paper, we trace the early development of the concept and explain the academic links that brought the concept to the fore in the late 1960s. In geography, the importance of the work of Michael F. Dacey, Andrew D. Cliff, and J...
In this paper I illustrate the use of general conditions, derived by Pinkse (1999), under which Moran–flavoured tests for spatial correlation and spatial cross–correlation have a limiting normal distribution in the presence of nuisance parameters in six frequently encountered spatial models. The conditions are weaker than those in related work by other authors and the class of nuisance paramete...
امروزه از مهمترین بحث هایی که بخش زیادی از زمان محققین را به خود اختصاص داده است، مباحث مربوط به آب به عنوان حیاتی ترین ماده بقای حیات انسان. تغییر در آب در دسترس می تواند واکنش جدی در پایداری آب زیست محیطی مناطق خشک و نیمه خشک ایجاد کند. لذا یکی از پر کاربردترین مباحث مربوط به هیدرولوژی بررسی هیدروگراف جریان می باشد که امکان مطالعه حجم سیلاب و میزان ذخیره حوزه پس از قطع بارندگی و نیز سهم آب زی...
Spatial regression methodology has been around for most of the 50 years (1961-2011) that the Southern Regional Science Association has been in existence. Cliff and Ord (1969) devised a parsimonious specification for the structure of spatial dependence among observations that could be used to empirically model spatial interdependence. Later work (Cliff and Ord, 1973, 1981; Ord, 1975) further dev...
file:///N|/Voss/Courses/Spatial%20Statistics/Books%20and%20Articles/Anselin%20L.%201999.htm (1 of 25)6/9/2006 2:36:06 PM The Future of Spatial Analysis in the Social Sciences This paper presents a personal view on some emerging research directions at the interface of social science and spatial analysis. Particular emphasis is placed on methodological challenges presented by developments in soci...
برآورد شوری خاک سطحی با استفاده از تصاویر ماهواره ای لندست: مقایسة آمار کلاسیک با مدل های آمار مکانی
شوری خاک یکی از عوامل مهم محدودکنندة رشد گیاهان و تخریب اراضی است، لیکن مشاهدات زمینی برای تعیین شوری خاک بسیار زمانبر و پُرهزینه است. کاربرد مدلهای پیشبینی و برآورد شوری خاک به کمک مدلهای آمار مکانی در محیط سامانة اطلاعات جغرافیایی (gis) در مقایسه با آمار کلاسیک، با توجه به فرایند پیچیدة آن، مناسب و نسبتاً ارزان است. در این پژوهش با استفاده از دادههای هدایت الکتریکی خاک به دست آمده از 236 ...
Traffic accidents, which continue to increase from year in Turkey and the world, have become a huge problem that can result serious traumas, injuries, deaths, as well their material moral consequences. Many studies been carried out world reduce number of traffic but these not very effective reducing accidents. In this study, 3105 fatal or injured accidents between 2010–2017 Sar?yer district Ist...
Few better ways of checking and improving statistical methods exist than having other researchers go over your results, and so I especially appreciate the efforts in Anselin and Cho (2002), hereinafter AC. In this note, I make two main points. First, AC’s numerical findings from its empirical example and simulations contradict no prior research. The article’s one empirical example violates EI’s...
Gould, P. 1970. Is Statistix Inferens the Geographical Name for a Wild Goose? Economic Geography 46 (Supp.):439–48. Hänisch, D. 1988. Wahl-und Sozialdaten der Kreise und Gemeinden des Deutschen Reiches, 1920–1933: Benutzer-Handbuch. Berlin: Zentralinstitut für sozialissenschaftliche Forschung, Freie Universität Berlin. Jones, J.P., and Casetti, E., eds. 1992. Applications of the Expansion Metho...
Spatial-time analysis of cardiovascular emergency medical requests: enlightening policy and practice
Abstract Background Response time to cardiovascular emergency medical requests is an important indicator in reducing disease (CVD) -related mortality. This study aimed visualize the spatial-time distribution of response time, scene and call-to-hospital these requests. We also identified patterns clusters CVD-related calls. Methods cross-sectional was conducted Mashhad, north-eastern Iran, betwe...
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