This essay discusses the e¤ect of technical change on wage inequality. I argue that the behavior of wages and returns to schooling indicates that technical change has been skill-biased during the past sixty years. Furthermore, the recent increase in inequality is most likely due to an acceleration in skill bias. In contrast to twentieth century developments, most technical change during the nin...

This paper discusses collage as a means to explore spatial ideas. It concerns the practice of drawing-as-research, the spatiality of drawing and the nature of paper. It questions the homogeneity of digital tools in contemporary practice. It is introduced with a discussion of architectural representation and space with a historical trajectory. It questions an understanding of space-as-geometry a...

Our data analysis suggests that the following factors contribute to the faculty adoption of and satisfaction with the online mode of instruction: improvement in traditional teaching ability through online teaching, higher quality of education that faculty believe online students receive, higher rating of the majority of students’ technical sophistication, and higher number of online courses pre...

Today, electronic commerce (e-commerce) has been utilised as a rapid vehicle to transform the world into an information society. In the business environment, e-commerce has made considerable inroads not only into large organisations but also the small and medium-sized enterprises (SMEs). However, SMEs are not adopting e-commerce with same speed as their larger counterparts. This slow growth has...

Turnover also creates stress because the remaining employees must get the job done while sometimes under-staffed because an end-user support technician or programmer quit, was laid off, or was fired. When a key project team member walks out the door, the knowledge of systems and technical experience that he or she brought to the project are also gone. This often means project delays, quality de...

The Machine Drawing Understanding System (MDUS) is an experimental CAD conversion system aimed at realizing the entire process of understanding mechanical engineering drawings, from scanning to three-dimensional (3-D) reconstruction. This paper describes the structure, algorithms and current performance of MDUS. The modular structure of the system provides for further improvements and makes it ...

The concept of rectangle-of-influence (RI) drawings is old and well-studied in the area of graph drawing. A graph has such a drawing if we can assign points to its vertices such that for every edge (v, w) the supporting rectangle (i.e., the minimal closed axis-aligned rectangle R(v, w) containing v and w) contains no other points. In the original setup, the graph had to have an edge for every p...

This paper presents the evaluation of a number of algorithm alternatives for content based retrieval from a database of technical drawings representing patents. The objective is to help patent evaluators in their quest for a possible patent bearing too much similarity with the one under investigation. To achieve this, we have devised a system where images (drawings) are represented using attrib...

In this paper we present a method for preparation of technical drawings in the domain of electroplating lines. We treat the method as the combination of two tasks: configuration and document preparation. The proposed method combines the basic concepts of these domains: generic coding introduced in document preparation task and component oriented approach used in the configuration task. We show ...

A k-track drawing is a crossing-free 3D straight-line drawing of a graph G on a set of k parallel lines called tracks. The minimum value of k for which G admits a k-track drawing is called the track number of G. In [18] it is proved that every graph from a proper minor closed family has constant track number if and only if it has constant queue number. In this paper we study the track number of...