Frontier-based exploration is the most common approach to exploration, a fundamental problem in robotics. In frontierbased exploration, robots explore by repeatedly detecting (and moving towards) frontiers, the segments which separate the known regions from those unknown. A frontier detection sub-process examines map and/or sensor readings to identify frontiers for exploration. However, most fr...

We consider the case of production units arranged into a number of groups. All units within a group choose output-input combinations from the same production possibilities set, which is represented by a stochastic frontier model. The metafrontier is the envelope (over groups) of the group-specific frontiers. We are interested in the unit’s inefficiency relative to its group-specific frontier, b...

The current study aims to explore the connections between business environments and firms' competitive priorities, which establish the basis for manufacturing strategy. This study explicitly considers the effects of asset and operating frontiers, as well as trade-offs across competitive priorities, a topic which has not been thoroughly studied by prior research. We collected data from 434 Chine...

Exploring an unknown environment with multiple robots requires an efficient coordination method to minimize the total duration. A standard method to discover new areas is to assign frontiers (boundaries between unexplored and explored accessible areas) to robots. In this context, the frontier allocation method is paramount. This paper introduces a decentralized and computationally efficient fro...

due to agriculture is a risky activity and risk models is important in order to analyze the behavior of farmers, hence, in this study, the factors affecting risk-taking and risk aversion is the region grape growers. data analysis was performed by using stochastic frontier. data gathered by questionnaires at three counties of zabol, hirmand and zahak at 265 grape farmers in crop year of 2011-201...

It has long been observed that developing countries made scant use of dispute settlement under the General Agreement on Tariffs and Trade (GATT). Less clear are the reasons for this. Most observers insist that the various GATT reforms that were intended to help developing countries failed to insulate them from the “power politics” of the system (Kuruvila, 1997). Not surprisingly, many of these ...

The question this paper addresses is how can IT support the resolution of disputes through arbitration and mediation. The first and second parts will examine the benefits of Online Dispute Resolution, some of the pitfalls it may present and how these can be avoided. The third part will then look at one of the more formidable obstaclesthe issue of security of communications. The fourth part will...

manoeuvre, is one of the principles of war in most of the world’s armies. mobility and manoeuvre of the operational and support forces in the battle fields occur in bed of natural and cultural geographic factors, i.e, avenue approach and frontier transportation networks. so for this reason analyzing this geographical factors in skills such as line identification in tactical and operational leve...

Data envelopment analysis (DEA), originally developed to study production efficiency of micro-level organizations, has recently been used to construct a production-frontier approach to the analysis of international macroeconomic growth and convergence patterns. DEA methods are used to construct the convex production frontier and this construction is then employed to decompose productivity growt...

Consider a planar Brownian motion run for nite time. The frontier or \outer boundary" of the path is the boundary of the unbounded component of the complement. Burdzy (1989) showed that the frontier has innnite length. We improve this by showing that the Hausdorr dimension of the frontier is strictly greater than 1. (It has been conjectured that the Brownian frontier has dimension 4=3, but this...