scholarly journals Latest Developments in Industrial Hybrid Machine Tools that Combine Additive and Subtractive Operations

Materials ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 2583 ◽  
Author(s):  
Magdalena Cortina ◽  
Jon Arrizubieta ◽  
Jose Ruiz ◽  
Eneko Ukar ◽  
Aitzol Lamikiz
Keyword(s):  
Process Planning ◽  
Machine Tools ◽  
Point Of View ◽  
Future Perspectives ◽  
Post Processing ◽  
Planning Decision ◽  
Hybrid Machine ◽  
The One ◽  
Complex Parts ◽  
Insight Into

Hybrid machine tools combining additive and subtractive processes have arisen as a solution to increasing manufacture requirements, boosting the potentials of both technologies, while compensating and minimizing their limitations. Nevertheless, the idea of hybrid machines is relatively new and there is a notable lack of knowledge about the implications arisen from their in-practice use. Therefore, the main goal of the present paper is to fill the existing gap, giving an insight into the current advancements and pending tasks of hybrid machines both from an academic and industrial perspective. To that end, the technical-economical potentials and challenges emerging from their use are identified and critically discussed. In addition, the current situation and future perspectives of hybrid machines from the point of view of process planning, monitoring, and inspection are analyzed. On the one hand, it is found that hybrid machines enable a more efficient use of the resources available, as well as the production of previously unattainable complex parts. On the other hand, it is concluded that there are still some technological challenges derived from the interaction of additive and subtractive processes to be overcome (e.g., process planning, decision planning, use of cutting fluids, and need for a post-processing) before a full implantation of hybrid machines is fulfilled.

scholarly journals Latest Developments in Industrial Hybrid Machine Tools That Combine Additive and Subtractive Operations

2018 ◽  
Author(s):  
Magdalena Cortina ◽  
Jon Iñaki Arrizubieta ◽  
Jose Exequiel Ruiz ◽  
Eneko Ukar ◽  
Aitzol Lamikiz
Keyword(s):  
Process Planning ◽  
Machine Tools ◽  
Current Situation ◽  
Point Of View ◽  
Future Perspectives ◽  
Hybrid Machine ◽  
Industrial Context ◽  
Insight Into ◽  
Lack Of Knowledge

Hybrid machine tools combining additive and subtractive processes have arisen as a solution to the increasing manufacture requirements, boosting the potentials of both technologies, while compensating and minimizing their limitations. Nevertheless, the idea of hybrid machines is relatively new and there is a notable lack of knowledge in the field. Therefore, in the present paper, an insight into the advancements of hybrid machines is given, identifying their real capabilities, together with the latest developments from an industrial context. In addition, the current situation and future perspectives of hybrid machines from the point of view of process planning, monitoring and inspection are discussed. Finally, the challenges that must be overcome and the opportunities that the hybrid machines will provide in the forthcoming years are presented.

Architecture of Evolution

2021 ◽  
Author(s):  
Alla Packevich
Keyword(s):  
Planetary System ◽  
Conflict Situation ◽  
Point Of View ◽  
Science Students ◽  
Present Stage ◽  
Male And Female ◽  
Different Types ◽  
New Energy ◽  
The One ◽  
Insight Into

The monograph, on the one hand, examines the period of development of the descending cycle of evolution and the associated progressive changes that show the irreversibility of the processes of formation of the planetary system. The end of one cycle and the beginning of another leads to the transformation of the system of life and the expansion of consciousness at a new energy level. On the other hand, the questions of potential opportunities for the development of the ascending phase of evolution, which goes both along the path of complexity of the organization and along the path of diversity, are considered. In the ascending evolutionary stream, what has been differentiated into the corresponding levels in the descending cycle is brought together and thus prepared to enter into new, more perfect forms of unity. It is shown that the development of humanity along its entire path depends on the interaction of energies of various forms and potentials. Understanding the relationships between different types of energy and their use provides insight into many important issues in the evolution of society. The material introduces the modern features of the existence of the male and female sexes from the energy point of view. The idea of a way out of the current conflict situation that has arisen between the sexes at the present stage of evolution is proposed. It will be useful for those interested in the problems of scientific knowledge, architects, philosophers,historians, physicists and methodologists of science, students and students of secondary schools.

scholarly journals Globalne tezy, lokalne przemilczenia

2012 ◽  
pp. 1-4
Author(s):  
Grzegorz Krzywiec
Keyword(s):  
Point Of View ◽  
Eastern European ◽  
National Narratives ◽  
Warsaw Ghetto ◽  
European Experience ◽  
The Holocaust ◽  
Soviet Russia ◽  
The One ◽  
New Evidence ◽  
Insight Into

Global theses with local omissionsTimothy Snyder’s book is an ambitious monograph which attempts at placing Shoah in a more appropriate context of the murderous fight between the Nazi Germany and the Soviet Russia from the perspective of civilian victims. However, the book offers no new evidence or new arguments. On the one hand, most of the interpretations come from established scholars. On the other hand, Bloodlands presents a sort of synthesis of the latest discussions of the Holocaust historians and Eastern European experience of the Soviet rule. Nonetheless, as Snyder himself has stated, the novelty of the book lies rather in a parallel insight into systems and events. Such “parallelism” must, and surely will, trigger a wealth of reflections.The review article focuses on one particular aspect of the book. One of the most suggestive assumptions of Snyder’s method is that the book overcomes national narratives by examining the cruelest period in the 20th century from the above-mentioned universal point of view. However, for Snyder, a leading scholar of Eastern European, and first and foremost, Polish history, these “national” motifs play a significant, and often even crucial role in his book.Yet, as it is claimed in the review, the author frequently cannot free himself from them. On the contrary, his narrative delivers systematic permeations of Polish martyrological stereotypes and biases, which in the end results in a reproduction of many handbook schemes and even metaphorical figures from the so-called Polish “historical politics”. This also leads to many false and misleading juxtapositions with the most striking one being the comparison between the Warsaw Ghetto Uprising and Warsaw Uprising.Interestingly enough, evading many national particularities, Snyder relapses in deeply rooted national, and to be specific, Polish tales. He proves to be more “national” than many other “national” scholars critical in their research of this period.

Research on Ultrasonic-Assisted CNC Cutting of Honeycomb Cores Based on UG

2021 ◽  
Author(s):  
Dongfang Mu ◽  
Xiaoping Hu ◽  
Haofeng Yu ◽  
Baohua Yu
Keyword(s):  
Cutting Force ◽  
Process Planning ◽  
Machine Tools ◽  
Cnc Machine Tools ◽  
Ultrasonic Machining ◽  
Post Processing ◽  
Cnc Machine ◽  
Good Surface ◽  
Ultrasonic Assisted ◽  
Honeycomb Cores

Abstract Compared with traditional milling, ultrasonic-assisted cutting of honeycomb cores has the advantages of good surface quality and low cutting force. Because the ultrasonic cutter and chip shapes used in ultrasonic machining are significantly different from traditional machining methods. This study is based on UG CAM for process planning, which will be converted into codes that can be recognized by six-axis CNC machine tools through post-processing, and verify the feasibility through VERICUT simulation.

scholarly journals Fridays for Future als Lern- und Erfahrungsraum: Befunde zu den Beteiligungsformaten, den Motiven und der Selbstwirksamkeitserwartung von Engagierten

2021 ◽  
Vol 2021 (3) ◽  
pp. 10-15
Author(s):  
Jana Costa ◽  
Elena Wittmann
Keyword(s):  
Online Survey ◽  
Theoretical Perspective ◽  
Frame Of Reference ◽  
Point Of View ◽  
Active Engagement ◽  
Educational Processes ◽  
Starting Point ◽  
Theoretical Frame ◽  
The One ◽  
Insight Into

In this article, engagement in the Fridays for Future (FFF) movement is examined from an educational point of view. Framing active engagement in the FFF movement theoretically as a learning opportunity, selected findings from an online survey (n=194) are presented. In a theoretical perspective, specific characteristics of the FFF movement are outlined with regard to learning and educational processes. Starting point of the empirical analyses are different possibilities of participation. On the one hand, an insight into the various participation formats is given. On the other hand, it is asked what motivates those involved to work for sustainable development and whether differences in motives and self-efficacy can be found depending on the form of participation. The results will be linked back to the theoretical frame of reference and discussed further.

scholarly journals Ernest Howard Griffiths, 1851-1932

1932 ◽  
Vol 1 (1) ◽  
pp. 15-18 ◽  
Keyword(s):  
Nineteenth Century ◽  
Physical Science ◽  
Physical Theory ◽  
Point Of View ◽  
Laboratory Apparatus ◽  
The Road ◽  
Physical Measurements ◽  
History Of ◽  
The One ◽  
Insight Into

The triumphs of recent physical science have been so great, and have so filled our minds, that the work of those who completed the scheme of physics characteristic of the nineteenth century is in danger of being forgotten or, at best, regarded merely from the historical point of view. Forty years ago, it seemed that the main outlines of physics had been laid down once for a ll; it remained merely to carry the accuracy of physical measurements to another place of decimals, and devise a convincing electro-mechanical structure for the luminiferous aether. Yet, from nineteenth-century physics, those of the twentieth arose. The methods of the one enabled pioneers to reach the new fields of the other, and the older mechanical theories of matter and energy led naturally to the wider, if vaguer, concepts of to-day. Even the road by which the new fields were approached, the discharge of electricity through gases, was traced by means of that concept of ions developed in the older theory of liquid electrolysis. This sketch may help to make clear the place of Griffiths in the history of science. He was not a pioneer in physical theory, but, accepting the ideas of his age, he used his remarkable experimental skill, and his insight into what was worth doing, to investigate the possibilities of laboratory apparatus, and then to obtain the highest attainable accuracy in the measurements of really important physical constants. Although some of his later determinations were useful as a test of the quantum theory, his real work was done in helping to finish the structure of nineteenth-century physics.

scholarly journals Peacebuilding in Kosovo

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Dr.Sc. Ngadhnjim Brovina
Keyword(s):  
Scientific Paper ◽  
Research Paper ◽  
Point Of View ◽  
Historical Method ◽  
Scientific Papers ◽  
The One ◽  
Definition Of ◽  
The Cold War ◽  
Insight Into

Peacebuilding as a definitions has been initiated and studied quite late, while as a concept it begun to be used after the Cold War. The well-known researcher Johan Galtung, was the one who developed and reasoned the notion of peacebuilding as well as its development phasing.For this scientific paper, which deals with peacebuilding, we have chosen as a case study, the case of Kosovo.The main objective of this paper is to present the developments in Kosovo, and its journey towards peacebuilding, starting from 1999, a period when the war ends and peace begins.Materials elaborated in this paper, are mainly articles and scientific papers by foreign authors, because it is worthwhile and important to have an insight into their point of view regarding Kosovo peacebuilding case.The methodology applied in this research paper, is based on the analysis of these materials, using descriptive and historical method, through which we will highlight the case of peacebuilding in Kosovo.The expected outcomes of this paper, aim to present the definition of peacebuilding as a concept as well as its usage in the case of Kosovo, as a case study used in this research paper. It also aims to show the challenges that Kosovo politics have encountered in order to build a sustainable peace.In the conclusions of this paper, we would like to present the case of peacebuilding in Kosovo as a success story, and this case may be used as a model for other international cases where needed.

Understanding functional illiteracy from a policy, adult education, and cognition point of view: Towards a joint referent framework

2019 ◽  
Vol 30 (2) ◽  
pp. 109-122
Author(s):  
Aleksandar Bulajić ◽  
Miomir Despotović ◽  
Thomas Lachmann
Keyword(s):  
Adult Education ◽  
Operational Definition ◽  
Literacy Skills ◽  
Point Of View ◽  
Industrialized Countries ◽  
Functional Illiteracy ◽  
Scale Levels ◽  
Components Of Reading ◽  
The One ◽  
Definition Of

Abstract. The article discusses the emergence of a functional literacy construct and the rediscovery of illiteracy in industrialized countries during the second half of the 20th century. It offers a short explanation of how the construct evolved over time. In addition, it explores how functional (il)literacy is conceived differently by research discourses of cognitive and neural studies, on the one hand, and by prescriptive and normative international policy documents and adult education, on the other hand. Furthermore, it analyses how literacy skills surveys such as the Level One Study (leo.) or the PIAAC may help to bridge the gap between cognitive and more practical and educational approaches to literacy, the goal being to place the functional illiteracy (FI) construct within its existing scale levels. It also sheds more light on the way in which FI can be perceived in terms of different cognitive processes and underlying components of reading. By building on the previous work of other authors and previous definitions, the article brings together different views of FI and offers a perspective for a needed operational definition of the concept, which would be an appropriate reference point for future educational, political, and scientific utilization.

When Romania met the Cohesion Policy. Regional governance in-between national conventions and European ideals

2018 ◽  
Vol 18 (2) ◽  
pp. 127-148 ◽  
Author(s):  
Alexandru Brad
Keyword(s):  
Regional Policy ◽  
Development Planning ◽  
Regional Governance ◽  
Theoretical Ground ◽  
Cohesion Policy ◽  
Redistributive Policy ◽  
Policy Context ◽  
Core Areas ◽  
The One ◽  
Insight Into

This article is about the practice of territorial governance emerging at the junction of European Union-sanctioned ideals and Romanian development-planning traditions. On the one hand, the European agenda emphasises a smart, inclusive, sustainable model of economic growth. However, the persisting centralised workings of the Romanian state significantly alters the scope of regional interventions. As such, while core cities grew their economies swiftly, peripheral places were left in an unrelenting stagnation. My first aim is to provide a theoretical ground for a practicecentred approach to understanding territorial governance. Second, by drawing on Romania’s regional policy context as an example, I give an insight into how practices of partnership and competition fare in a context of ongoing territorial polarisation. I conclude by emphasising the need for a regional redistributive policy mechanism, one which should enable and assist non-core areas to access capacities for defining and implementing development projects.

Marx, Silk Poems, and the Pretext of Qualities

2020 ◽  
Vol 151 (1) ◽  
pp. 96-126
Author(s):  
Kathryn Crim
Keyword(s):  
The Other ◽  
Use Value ◽  
Working Day ◽  
The One ◽  
Insight Into

Karl Marx’s comments on silk manufacture in “The Working Day” chapter of Capital, volume 1, demonstrate how “quality”—usually associated with “use value”—has been mobilized by capital to naturalize industrialized labor. Putting his insight into conversation with a recent multimedia poetic project, Jen Bervin’s Silk Poems (2016–17), this essay examines the homology between, on the one hand, poetry’s avowed task of fitting form to content and, on the other, the ideology of labor that fits specific bodies to certain materials and tasks.

Sign in / Sign up

Export Citation Format

Share Document