The paper presents the possibilities of teaching a robot controller to perform operations of autonomous segregation of objects differing in features that can be identified using a vision system.Objects can be arranged freely on the robot scene also covered with others. In the learning phase, a robot operator presents the segregation method by moving subsequent objects held in a human hand, e.g. a red object to container A, a green object to container B, etc. The robot system, after recognizing the idea of segregation that is being done using the vision system, continues this work in an autonomous way, until all identified objects will be removed from robotic scene. There are no restrictions on the dimensions, shapes and placement of containers collecting segregated objects. The developed algorithms were verified on a test bench equipped with two modern robots KUKA LBR iiwa 14 R820.
Due to the wide range of various sheet metal grades and the need to verify the material properties, there are numerous methods to determine the material formability. One of them, that allows quick determination of sheet metal formability, is the Erichsen cupping test described in the ISO 20482: 2003 standard. In the presented work, the results of formability assessment for DC04 deep drawing sheet metal were obtained by means of the traditionally carried out Erichsen cupping test and compared with the results obtained by using two advanced methods based on vision analysis. Application of these methods allows extending the traditional scope of analysis during Erichsen cupping test by determination of the necking and strain localization before fracture. The proposed methods were compared in order to dedicate appropriate solution for the industrial application and laboratory tests respectively, where the simplicity and reliability are the mean aspects need to be considered when applied to the Erichsen cupping test.
The three-dimensional (3D) coordinate measurement of radio frequency identification (RFID) multi-tag networks is one of the important issues in the field of RFID, which affects the reading performance of RFID multi-tag networks. In this paper, a novel method for 3D coordinate measurement of RFID multitag networks is proposed. A dual-CCD system (vertical and horizontal cameras) is used to obtain images of RFID multi-tag networks from different angles. The iterative threshold segmentation and the morphological filtering method are used to process the images. The template matching method is respectively used to determine the two-dimensional (2D) coordinate and the vertical coordinate of each tag. After that, the 3D coordinate of each tag is obtained. Finally, a back-propagation (BP) neural network is used to model the nonlinear relationship between the RFID multi-tag network and the corresponding reading distance. The BP neural network can predict the reading distances of unknown tag groups and find out the optimal distribution structure of the tag groups corresponding to the maximum reading distance. In the future work, the corresponding in-depth research on the neural network to adjust the distribution of tags will be done.
The article attempts to reach the elements that control the efforts of constituting a specific type of vision of the past, with which — as I believe — we are dealing in the contemporary public discourse about history.
The paper considers the vision of the world and the person of Józef Kazimierz Plebański (1831–1897), the Warsaw historian, one of two Polish students of Leopold von Ranke. In my article, I analyse the essential categories and objects which structure his thinking about reality, such as liberty, Providence, moral laws, state, nation, and humanity. At the end, I try to compare the worldview of Plebański with the worldview of historicism.
The aim of this study is to refl ect on two notions that are often used in contemporary research, relevant to cultural linguistics: linguistic vision of the world and linguistic image of the world. We start with expressing our conviction that it is not a question of two synonymic concepts nor do we believe that they are opposite notions. In our opinion, they are two ideas that refl ect the relationship between the language and culture of a speech community but at different levels and from a different perspective. In this study we will examine the research works that, in recent years, have used both notions in order to expose their advantages. In the fi rst part of our work we will discuss the background of the discipline and then provide the defi nitions of both notions and their uses most signifi cant uses. We will draw on the studies of researchers who study Slavic languages, Spanish and English.
Advanced vision method of analysis of the Erichsen cupping test based on laser speckle is presented in this work. This method proved to be useful for expanding the range of information on material formability for two commonly used grades of steel sheets: DC04 and DC01. The authors present a complex methodology and experimental procedure that allows not only to determine the standard Erichsen index but also to follow the material deformation stages immediately preceding the occurrence of the crack. Accurate determination of these characteristics in the sheet metal forming would be an important application, especially for automotive industry. However, the sheet metal forming is a very complex manufacturing process and its success depends on many factors. Therefore, attention is focused in this study on better understanding of the Erichsen index in combination with the material deformation history.
This article is a contribution to the history of underground Polish press in 1939–1945. It is concerned with the main problems discussed in the periodical Jutro Polski. Biuletyn Informacyjny [ Poland’s Tomorrow: Information Bulletin] issued by the Democratic Party — The Rectangle. Published two-three times a week over the period 1940–1942, it informed its readers about the situation at the battle fronts, the latest in international politics and current events in Poland; it also featured articles debating the problem of Poland’s post-war political system.
This article looks at a character of Jakub Frank, the 18th-century Jewish Messianic leader, in Andrzej Żuławski’s book of idiosyncratic essays Moliwda (published in 1994). Żuławski, a controversial fi lm-maker and writer, whose historic musings are usually focused on an individual who embodies the spirit of the age in this case turns his attention to Jakub Frank. Moliwda is typical of the early phase of Żuławski’s writing career characterized by a radically revisionist explorations of the Age of the Enlightenment in search for parallels with the modern age and his own life. Jakub Frank is presented as a trickster, religious charlatan, political fraudster and fateful ancestor of 20th-century tyrants, but at the same time as a rebel against the idea of God and history enshrined in the Judaic tradition. The article views Żuławski’s interpretation as an attempt to appropriate certain elements of the history of religion to create an authoritarian vision of modernity and its historical roots, based on mechanisms of self-aggrandizement, sexualization of power and subversion of all hierarchies.