This is the general idea of the problem space hypothesis. The part icular detai ls of the construct ion of a space and the search through it depends on the task and on the person who solves i t . For instance, if the task is simple, as in the item-recognition task <16> and the three-term ser ies task <8>, the process of constructing a problem space is t r i v i a l . The task is easi ly assimil...

The Cooling Tower Energy & Operating Cost Analysis Software is an in-house program developed by Tower Tech and is used to design and evaluate the performance and life-cycle costs associated with a cooling tower. This version can be used to estimate the cost to purchase and operate a Tower Tech cooling tower and a competitor’s tower. A number of assumptions about the details of the competitor’s ...

Motivated by the minimal tower problem, an earlier work studied diagonalizations of covers where the covers are related to linear quasiorders (τ -covers). We deal with two types of combinatorial questions which arise from this study. (1) Two new cardinals introduced in the topological study are expressed in terms of well known cardinals characteristics of the continuum. (2) We study the additiv...

in this paper, a robust model presented is developed for hub covering flow problem in which hubs have capacity. this problem has two objective functions converting to a single-objective problem by using weighting method. firstly, the problem will be formulated in a certain case. then, by considering the demand as a non-random variable, it will be modeled by robust optimization. finally, by usin...

The problem of the Hanoï Tower is a classic exercise in recursive programming: the solution has a simple recursive definition, and its complexity and the matching lower bound are the solution of a simple recursive function (the solution is so easy that most students memorize it and regurgitate it at exams without truly understanding it). We describe how some very minor changes in the rules of t...

Overhead cranes are broadly used in industry. However, undesirable load swing is often induced with transportation. Therefore, various researches about control of positioning and swing suppression of crane load have been made. On the other hand, a worker operates a crane skillfully by manual-operation in transportation. Hence, support system and automation of crane operation are expected from t...

In this work, we study the integrated berth and crane scheduling problem in a tidal port with multiple terminals, considering uncertainties, tides, maximum coverage of cranes interference between cranes. For coping certain number randomly generated samples are used to evaluate solutions, slack variables introduced reduce impact caused by variation vessel arrival operational efficiency. A novel ...