Going Home Through an Unknown Street
نویسندگان
چکیده
We present a new strategy for searching for a goal in a street. The strategy works in two phases. First it follows an angular bisector, then it uses circular arcs based only on one side of the street. A competitive factor of 1.514 is achieved which is remarkably close to the lower bound of √ 2. Secondly, we assume that the location of the goal is known to the robot. We prove a lower bound of √ 2 on the competitive ratio of any deterministic strategy for searching in streets with known destination.
منابع مشابه
Institutional and Personal Homophobia in Sub-Saharan Africa: A Post-Materialist Explanation
Sub-Saharan Africa is currently the most homophobic place in the world in terms of both state institutions and public opinions. Many scholars have blamed this on the former colonial powers of Africa who imposed homophobic policies on their landholdings. In order to explain variations in African homophobia, this study conceptualizes homophobia in two forms: institutional, using a measure of the ...
متن کاملThe Stress of the Street for Patients With Persecutory Delusions: A Test of the Symptomatic and Psychological Effects of Going Outside Into a Busy Urban Area
BACKGROUND For many patients with persecutory delusions, leaving home and going into crowded streets is a key clinical problem. In this study we aimed to inform treatment development by determining the psychological mechanisms whereby busy urban environments increase paranoia. In a randomized design with prespecified mediation analysis, we compared the effects on patients of going outside into ...
متن کاملThe Role of House Outdoor Environment Features in Creating Home Attachment
Home attachment is positive emotional bond between home and its dwellers which may result in safety, solace and tranquility for them. To create this kind of relationship some physical and social prerequisites need to exist inside home. This article aims to answer the question "whether house outdoor environment features are also effective in developing home attachment or not?" Aiming to answer t...
متن کاملSustainable urban development through complete street policy implementation
Nowadays, the expansion of the cities is an inevitable necessity; increasing the dependence of the citizens on motor vehicles and, consequently, making development of the transportation networks a necessity rather than an option. Thus, increasing car ownership and car use has created many problems for the cities, such as increasing greenhouse gas emissions, environmental pollution, casualties o...
متن کاملO25: The Plan of Temporary Assembling of Flag on Children’s Umbrella
The reason for designing an ensign umbrella returning to a historical research was conducted in conjunction with the first steam train. Investigating a Parliamentary approval of Great Britain about movement of first steam trains, it can be concluded that, permission was given to a company to move its trains in the city only when engaging a person with red flag as vanguard. Accommodating first m...
متن کامل