The Article focuses on the first period of political and socio-economic transformation in Poland (1989-2004) describes change capital ownership links during transition from a centrally planned to free market economy. It constitutes an important research issue context understanding economic East-Central Europe, particular mechanisms flow foreign into certain areas space. processes have brought a...

This paper describes a new approach to computer-aided spatial linkage design which uses the dynamic binding feature of Java to provide a extensible software system. The spatial linkages that we focus on are constructed from one or more spatial open chains that are connected to a single workpiece. Each open chain has less than six degrees of freedom and is termed a serial chain primitive. The go...

The economic linkages between cities within the Yangtze River Economic Belt city cluster are important for precisely implementing strategy. Accordingly, this study used revised gravity model, social network method, and spatial Durbin model to analyze linkage strength, spatial-temporal differentiation, driving factors of three major in from 2006–2020. results confirm that Chengdu-Chongqing urban...

We present a high-level Picture Interpretation system based on an Object-Oriented concurrent Logic Programming approach. The system is written in Parlog++ and is based on the idea of a network of concurrent objects, each dealing with a class of thing in the picture, and exchanging messages in both a top-down and bottom-up direction. The linkages in the network are given by the a priori World Mo...

The dimensional synthesis of spatial chains for a prescribed set of positions can be used for the design of parallel robots by joining the solutions of each serial chain at the end effector. In some cases, this may yield a system with negative mobility. The synthesis of some overconstrained but movable linkages can be done if the finite screw system associated to the motion of the linkage is kn...

This paper describes a method for qualitatively representing and reasoning about spatial configurations of planar mechanisms. The method has direct relevance to, and implications for, computer-aided mechanism design and robotics. In particular, it can be used to solve spatial configuration problems where exact geometric knowledge is not available, and to provide guidance for the application of ...

Location-based social networks (LBSNs) have recently attracted a lot of attention due to the number of novel services they can offer. Prior work on analysis of LBSNs has mainly focused on the social part of these systems. Even though it is important to know how different the structure of the social graph of an LBSN is as compared to the friendship-based social networks (SNs), it raises the inte...

Traditional cartography, when managing change in the real world being mapped naturally turned to the time-slice concept: “This is what the real world looked like at date X”. Computer based replacements for manual techniques used the same approach. The reasons for preserving the time-slice mode! were partly for compatibility with previous operations, and partly because the computer methodologies...