The purpose of this study is to examine the Twitter communica­ tion between school districts, superintendents, and the public. Content analysis of the tweets posted by the 100 largest U.S. school districts and those district superintendents was performed to investigate how the districts and the super­ intendents communicated with the public on Twitter. Next, paired sample f-tests were performed...

Objective To describe the characteristics of compatible poliomyelitis cases and to assess the programmatic implications of clusters of such cases in India. Methods We described the characteristics of compatible poliomyelitis cases, identified clusters of compatible cases (two or more in the same district or neighbouring districts within two months), and examined their relationship to wild polio...

Nine districts in West Bengal, India, and 42 districts in Bangladesh have arsenic levels in groundwater above the World Health Organization maximum permissible limit of 50 microg/L. The area and population of the 42 districts in Bangladesh and the 9 districts in West Bengal are 92,106 km(2) and 79.9 million and 38,865 km(2) and 42.7 million, respectively. In our preliminary study, we have ident...

Redistricting is a necessary and important process in any democratic society. Modern tools used by legislatures for apportionment of districts are heavily outdated and rely on archaic algorithms. Most use manual redrawing of lines, while others use simulators that simply switch neighborhoods between districts at random until constraints are met. In this document, I outline an attempt to provide...

The article aims to investigate the presence of a correlation between eco-innovation and economic performance within industrial districts. The case analyzed in this article is based on a study concerning a sample of 54 Italian industrial clusters entitled "Eco-Districts" that has compiled a list of the most eco-efficient districts at the national level. After selecting two districts, this study...

A redistricting plan partitions a state’s tracts (often counties or census tracts) into a set of congressional districts. Special interests attempt to mold districts to their political advantage, often inviting judicial review in the process. The quality of a plan has been judged by the courts using a fairly standard set of criteria: (1) the districts must be contiguous, (2) the districts must ...

This paper presents a strategy for dividing a state into congressional districts using a modified version of Smith and Ryan’s recursive shortest splitline algorithm (2007). Our strategy reduces the cost of the computation by approximating the population of a ZIP Code Tabulation Area (ZCTA) as a point mass at its population centroid. If there are N ZCTAs in the state with E total edges, and k di...

A survey of health districts in England and Wales was carried out at the end of 1984 to ascertain among other things the range of current programmes for preschool vision screening. The response rate was 81.3%. Altogether 94% of districts reported screening for both reduced visual acuity and squint; two districts screened for neither. A great variety of different types of tests were in use and s...

background: growth of the world population alongside an increasing adoption of cancer-causing behaviors,particularly smoking and various environmental factors. a variety of cancers data in specialgeographic areas can help define medical programs for treatment and screening of high-risk groups.since cancer types has not been reported within districts and neighbourhoods of tehran city so far,this...

OBJECTIVE To determine the policy and practice of district health authorities in England and Wales for BCG immunisation in schoolchildren and neonates. DESIGN Self completion postal questionnaire survey. PARTICIPANTS District immunisation coordinators. SETTING 199 district health authorities in England and Wales. RESULTS Questionnaires were received from 186 districts, a response rate o...