On the Widespread Occurrence of the Inverse Square Distribution in Social Sciences and Taxonomy

نویسنده

  • Guido Caldarelli
چکیده

Guido Caldarelli, 2 Cécile Caretta Cartozo, Paolo De Los Rios, and Vito D.P. Servedio INFM UdR ROMA1 Dipartimento di Fisica, Università di Roma “La Sapienza” Piazzale A. Moro 2 00185 Roma, Italy Istituto di Studi e Ricerche ”E. Fermi” Compendio Viminale 00184 Roma, Italy Laboratoire de Biophysique Statistique, ITP-FSB, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland (Dated: February 2, 2008)

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Widespread occurrence of the inverse square distribution in social sciences and taxonomy.

The widespread occurrence of an inverse square relation in the hierarchical distribution of subcommunities within communities (or subspecies within species) has been recently invoked as a signature of hierarchical self-organization within social and ecological systems. Here we show that, whether such systems are self-organized or not, this behavior is the consequence of the treelike classificat...

متن کامل

Investigating the Effect of Plantar Pressure Distribution Pattern on the Occurrence of Medial Tibial Stress Syndrome in Military Soldiers during Military Training

Introduction: Medial tibial stress syndrome is one of the most common musculoskeletal injuries among soldiers. However, there has not been a detailed report on the effect of risk-factors on its occurrence including the distribution of plantar pressure in military personnel and different communities. For this reason, the purpose of this study is to investigate the effect of plantar pressure dist...

متن کامل

Evaluation of Multiple Choice Questions Quality Trend as Structure and Taxonomy

Background: Evaluation of multiple-choice questions is a strategic activity and the most effective tool in educational system and improvement. In this study, the quality of some indexes of multiple-choice exams in Babol Para Medical faculty was investigated on the basis of structure and knowledge level distribution in the first semesters of 2007 and 2012. Methods: The Milman checklist was used ...

متن کامل

Epidemiological survey and geographical distribution of cutaneous Leishmaniasis in North Khorasan province, 2006-2013

Background and aims: Leishmaniasis is a widespread problem, especially in the tropical and subtropical countries. Since understanding the epidemiologic and geographical distribution of the diseases is necessary for prevention and controlling the Leishmaniasis. This study was conducted on epidemiological survey of cutaneous Leishmaniasis in North Khorasan Province, using Arc GIS Software during ...

متن کامل

Bayesian Estimation of Shift Point in Shape Parameter of Inverse Gaussian Distribution Under Different Loss Functions

In this paper, a Bayesian approach is proposed for shift point detection in an inverse Gaussian distribution. In this study, the mean parameter of inverse Gaussian distribution is assumed to be constant and shift points in shape parameter is considered. First the posterior distribution of shape parameter is obtained. Then the Bayes estimators are derived under a class of priors and using variou...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2008