scholarly journals Industrial Re-Use of Composites

2021 ◽  
Author(s):  
Albert Ten Busschen
Keyword(s):  
New Products ◽  
Business Case ◽  
Global Scale ◽  
Rotor Blades ◽  
Fibre Reinforcement ◽  
Thermoset Composites ◽  
Automated Processing ◽  
Composite Product ◽  
Leisure Industry ◽  
Further Development

The amount of obsolete composites is increasing on a global scale, for example yacht hulls from a growing leisure industry and large rotor blades from wind energy production. Until now it has not been possible to recycle or disassemble thermoset composites into their original constituent parts of fibre reinforcement and resins. Subsequently a new method of re-use has been developed. This method involves machining the obsolete composite product into strips or flakes for re-use as reinforcing elements which, when combined with fresh resin and fibre, enable the production of a brand new component. This, in effect, preserves and re-uses the mechanical properties of the original obsolete composite. This method has been proven in manufacturing retaining walls, also guide beams for canals, crane mats and bridge decking, all using the strips or flakes from end of life composite products. For use on an industrial scale, a positive business case is imperative. In order to prove the industrial technology, new products have to contain a sufficiently high percentage of re-used composites in combination with automated processing. This has been achieved with “push-pultrusion” which is in essence a further development of the long established pultrusion process.

The development of biomedical gerontology in Ukraine – a historical priority

2021 ◽  
Vol 2021 (2b) ◽  
pp. 35-40
Author(s):  
I. Stambler ◽  
Keyword(s):  
Academic Discipline ◽  
National Development ◽  
Global Scale ◽  
Vital Role ◽  
Social Significance ◽  
International Growth ◽  
The Past ◽  
The Future ◽  
History Of ◽  
Further Development

Celebrating the 30th anniversary of Ukraine's independence, it is important to remember the historical achievements of Ukrainian science, to honor the heroes of the science of the past and to draw inspiration from their achievements for the development of science of the future. In this regard, the history of medicine, as a special academic discipline, plays a vital role an important academic and civic role, as it helps to trace the medical scientific achievements of the past and draw conclusions about their strengths and priorities for future national and international growth and development. Analyzing the scientific strengths and priorities of science and medicine in Ukraine, it is safe to say that biomedical gerontology is one of the most important scientific and historical values and priorities of Ukraine on a global scale. There are good reasons to continue and develop this tradition, building on the strengths that exist, drawing inspiration from the past and looking to the future. Currently, the development of biomedical gerontology is becoming increasingly important for Ukraine, given the rapid aging of the country's population. The resulting economic and social problems are related to the aging population, which puts biomedical gerontology as a discipline that seeks solutions to achieve healthy and productive longevity, at the forefront of social significance, demanding further development and support of this field for the sake of internal national stability, and to preserve the country's international contribution. It is hoped that the outstanding history of biomedical gerontology in Ukraine, its honorable historical place in national development and international cooperation, will inspire further growing support and development of this field in Ukraine and abroad.

Investigation of Consumer Behavior

2019 ◽  
pp. 1400-1411
Author(s):  
Sotiria Baziana ◽  
Eirini Tzimitra-Kalogianni
Keyword(s):  
Statistical Analysis ◽  
Consumer Behavior ◽  
Business Models ◽  
New Technologies ◽  
Business Case ◽  
Business Strategies ◽  
Organic Products ◽  
Organic Wine ◽  
The City ◽  
Further Development

Evidence shows that sustainability not only helps a business case getting stronger, but also embraces a sustainability agenda which can stimulate innovation, pushing companies to rethink their operations, products and business models. In addition, during the past few years the demand for organic wine has increased and many Greek businesses have entered the market, advertising the superiority of organic wine. The main objective of this study is to portray the need for an implementation of new technologies in the distribution and supply of organic wine in the city of Xanthi. Furthermore, the investigation of consumers' attitude will constitute the basis for further development of business strategies regarding sustainability and innovation in the agri-food chain. From the quantitative and qualitative data, the statistical analysis will provide findings on consumer behavior, attitudes, new trends, and factors that affect the choice of organic wine. Finally, the current paper is indicative of the general consumer stance towards organic-products.

Stability of helical tip vortices in a rotor far wake

2007 ◽  
Vol 576 ◽  
pp. 1-25 ◽  
Author(s):  
V. L. OKULOV ◽  
J. N. SØRENSEN
Keyword(s):  
Rotor Blades ◽  
Tip Vortex ◽  
Tip Vortices ◽  
Radial Extent ◽  
Helical Vortices ◽  
Constant Pitch ◽  
Bladed Rotor ◽  
The Stability ◽  
Further Development ◽  
Far Wake

As a means of analysing the stability of the wake behind a multi-bladed rotor the stability of a multiplicity of helical vortices embedded in an assigned flow field is addressed. In the model the tip vortices in the far wake are approximated by infinitely long helical vortices with constant pitch and radius. The work is a further development of a model developed in Okulov (J. Fluid Mech., vol. 521, p. 319) in which the linear stability of N equally azimuthally spaced helical vortices was considered. In the present work the analysis is extended to include an assigned vorticity field due to root vortices and the hub of the rotor. Thus the tip vortices are assumed to be embedded in an axisymmetric helical vortex field formed from the circulation of the inner part of the rotor blades and the hub. As examples of inner vortex fields we consider three generic axial columnar helical vortices, corresponding to Rankine, Gaussian and Scully vortices, at radial extents ranging from the core radius of a tip vortex to several rotor radii.The analysis shows that the stability of tip vortices largely depends on the radial extent of the hub vorticity as well as on the type of vorticity distribution. As part of the analysis it is shown that a model in which the vortex system is replaced by N tip vortices of strength Γ and a root vortex of strength − N/Γ is unconditionally unstable.

scholarly journals Disabling Power of Class and Ideology: Analyzing War Injury through the Transnational Disability Theory and Praxis

2019 ◽  
Vol 39 (3) ◽  
Author(s):  
Sona Kazemi
Keyword(s):  
Disability Studies ◽  
Social Relations ◽  
Western Europe ◽  
Global Scale ◽  
Theory Model ◽  
Armed Conflicts ◽  
Disability Theory ◽  
Alternative Research ◽  
Further Development

My doctoral thesis, through a case study of the theocratic-nationalist politics of the Iranian regime and the imperialist politics of the U.S., Russia, and Western Europe in the Middle East, investigated the ways in which gendered-, ideological-, and raced social-relations sustain armed conflicts and generate disability/injury. The study contributed to the emerging field of materialist/Marxist disability studies and critical race moves in disability studies by engaging the dialectics of geopolitics in order to contextualize war, and by proposing a new transnational theory for theorizing disability. In this paper, I extensively discuss my theoretical framework, along with the methodology for collecting and analyzing data in order to offer a radical alternative research method to traditionally biomedical, post-conventionist, liberal, and bourgeois approaches to disability. Additionally, I discuss how I built the new model using the case study in details while introducing its core theoretical constructs emerging directly from the case study. My conceptualization of a transnational theory/model interrogates the violence of the global political economy in producing disablement on a global scale. Finally, I discuss possible directions for further development of the transnational disability model not just as a theory, but also as praxis, active revolutionary knowledge, and political consciousness.

scholarly journals INVESTIGATION ON SPOT BOOKING AND DYNAMIC OCEAN FREIGHT MODELLING FOR HIGHER SPACE UTILISATION ON ULTRA LARGE CONTAINER VESSELS

Brodogradnja ◽  
2020 ◽  
Vol 71 (4) ◽  
pp. 53-65
Author(s):  
Bojan Beškovnik ◽  
Keyword(s):  
Global Scale ◽  
Container Terminals ◽  
Dynamic Adjustment ◽  
Maritime Logistics ◽  
New Ways Of Working ◽  
Commercial Work ◽  
Large Container ◽  
Freight Modelling ◽  
Further Development ◽  
Space Occupation

The article deals with the very topical issues of the use of spot ship’s space booking and the dynamic adjustment of ocean freight, according to the demand and availability of cargo space on container ships. Container lines are facing the challenges of filling the growing container ships, which also raises the difficulty of managing the overbooking. Two research hypothesis; that (H1) freight forwarders have concerns about a new spot booking mode and a dynamic way of formulating ocean rates; and that (H2) freight forwarders feel threatened by Container Lines (CL) to some extent to phase them out from the organization of intermodal transport chains due to the introduction of larger ships and the risk of low space occupation, are followed by the research. A survey between freight forwarders and NVOCCs (Non-Vessel Operating Common Carrier) on a global scale provides guidelines for the further development of CL model for the booking process and the formation of ocean rates because the results expose how new ways of working have a greater impact on the operational and commercial work between CL, freight forwarders and NVOCCs. According to the obtained result, the article proposes a three-step approach to be developed by CL that would bring freight forwarders and NVOCCs closer to a new way of working, reduce business risks, and, as a result, provide leverage to achieve ship space optimization and lower space pressure on container terminals. The study provides new understandings in building new operational models for efficient maritime logistics and brings novelty to the scientific community by defining descriptive gaps in changing strategic and operational approach for ship’s cargo space optimization.

scholarly journals Experimental investigation of unsteady flow phenomena in a three-stage axial compressor

2003 ◽  
Vol 217 (4) ◽  
pp. 341-348 ◽  
Author(s):  
R Niehuis ◽  
A Bohne ◽  
A Hoynacki
Keyword(s):  
Measurement Techniques ◽  
Axial Compressor ◽  
Global Scale ◽  
Rotor Blades ◽  
Tip Clearance ◽  
Tip Clearance Flow ◽  
Clearance Flow ◽  
Flow Phenomena ◽  
Rotor Stator Interaction ◽  
Interaction Phenomena

In the past years, a three-stage axial compressor equipped with a modern controlled diffusion airfoil (CDA) blading has been investigated in much detail, applying state-of-the-art steady and unsteady measurement techniques, at RWTH Aachen University. The compressor under investigation exhibits design features of real industrial compressors. By performing high-resolution measurements both in space and time, a thorough insight into various flow phenomena in the compressor has been achieved, leading to a better understanding of various flow phenomena such as rotor—stator interaction, tip clearance flow and viscous flow effects in a multistage compressor environment. After a short summary of some performance characteristics at design and off-design, this paper focuses on the analysis of interaction phenomena present in the three-stage axial compressor. The interaction phenomena are described on a more global scale. In order to quantify the upstream and downstream influence of the three rotor blades, a suitable parameter is presented.

scholarly journals The Theoretical Bases of Research of Animation Services in Tourism

2021 ◽  
Vol 6 (521) ◽  
pp. 170-175
Author(s):  
I. O. Panova ◽  
Keyword(s):  
Geographical Location ◽  
Tourism Industry ◽  
The People ◽  
Tourism Sector ◽  
The Social ◽  
Personal Skills ◽  
Market Needs ◽  
Leisure Industry ◽  
Further Development

The article is aimed at characterizing the theoretical bases of the research of animation services in tourism. The task is to determine the essence of tourist animation as an object of research and highlight its main types and functions. As part of the research, the following methods were used: analytical, historical, description and others. Today, the tourism industry is developing rapidly, despite a number of problems caused by the COVID-19 pandemic, both in the territory of Ukraine and abroad. Tourism remains an important industry, influencing the economy of countries. Therefore, for the further development of this sector, it is important to pay attention to improving the quality of services to maximize the satisfaction of the needs of tourists, especially during their leisure time. The quality factor of the level of tourist product provided under modern conditions is key for the functioning of the tourism sector. Now an important and integral part of the tourism business around the world is tourism animation. During leisure, tourists seek to satisfy a number of their own needs, namely: spiritual, physical, communication, self-realization, etc. In addition, they have the opportunity to analyze their own inner being or characterize the people who will be around at this time. The purpose of the leisure industry is to create all the necessary (safe) conditions for entertainment. The social component of animation activity is the creation and development of modern needs in tourists. In addition, an animation tourism program is directed towards forming and obtaining new useful skills for its participants. To maximize satisfaction of the requirements of vacationers, regardless of their nationality, age, economic prosperity, health status, animation programs must change in terms of content, time or activity during the tourist season. Usually, they depend on the size of the hotel, its geographical location, focus, specifics, etc. It is noted that today the domestic tourist market needs animation specialists. Therefore, it is necessary to pay attention to the level of their training, personal skills that will contribute to the implementation of modern animation programs.

scholarly journals Contemporary Tendencies in Third Party Logistics

2017 ◽  
Author(s):  
Aleksandrs Kotlars ◽  
Dmitrijs Solovjovs ◽  
Valerijs Skribans
Keyword(s):  
Scientific Literature ◽  
Value Added ◽  
Business Case ◽  
Third Party ◽  
Third Party Logistics ◽  
Knowledge Based ◽  
Main Emphasis ◽  
Logistics Services ◽  
Further Development

Contemporary third party logistics (3PL) companies tend to broaden their competences in different fields and apart from traditional logistics services provide various value-added services to their customers. An inductive analysis of 3PL related literature is required, in order to define possible directions for development of contemporary 3PL companies. The purpose of this paper is, foremost, to discover contemporary tendencies of 3PL activities through investigation of literature. Second, to systematically classify 3PL activities discussed in scientific literature. Third, discover areas that require further development. The paper is based on systematic review and classification of articles related to 3PL activities that were published in scientific journals and databases. This paper is organized as follows. First part contains quantitative analysis of literature and description of authors’ developed directions of 3PL activities. Subsequent sections contain qualitative review of modern 3PL tendencies by each of pre-defined areas. Last section aims at providing conclusions and suggestions for further research. The key findings are following. Majority of studies of 3PL activities are based on particular business case or survey that does not allow to make conclusion about industry in general. Main emphasis in contemporary research is done on knowledge-based services. It is agreed that core logistics services are tended to be replaced by value-added services.

scholarly journals Dropshipping as a Modern Direction of Business Development in Ukraine

2020 ◽  
Vol 24 (1) ◽  
pp. 107-112
Author(s):  
T. Lunkina ◽  
◽  
A. Kuhlyar ◽  
Y. Kemova ◽  
◽  
...  
Keyword(s):  
Business Model ◽  
Capital Investment ◽  
Rapid Development ◽  
World Market ◽  
Global Scale ◽  
Business Development ◽  
Technical Process ◽  
The World ◽  
Further Development ◽  
Comparative Description

Annotation. Introduction. The economic crisis, the acceleration of the scientific and technical process are forcing young entrepreneurs to look for new ways to make a profit and save time. The sale of goods under this scheme is gaining popularity in Ukraine. We considered marketplace for the sale of goods under the drop shipping scheme Purpose. The purpose of this article is to determining the relevance and feasibility of this business model. Develop Ukrainian marketplaces and access Ukrainian products to the world market by placing advertisements on world search sites and introducing delivery from abroad. Results. The article explores the realities and identifies prospects for the development of drop shipping system in Ukraine. It is noted that drop shipping act as one of the popular business model. It was investigated advantages and disadvantage. It was created comparative description of drop shipping with the production of goods was made. Dropshipping is a good start for developing your own business and entering the world market. This type of business can be easily implemented both in Ukraine and in cooperation with other countries. The rapid development of technology gives impetus to the implementation of e-commerce through the sale of goods by the method of dropshipping around the world. An example of a world-famous platform for the sale of goods is considered Conclusion. Drop shipping is promising for starting your own business. It does not require significant capital investment. There is a possibility of further development in the field of product promotion. The sale of goods under the dropshipping system is promising for development on a global scale for domestic sites. The tool for realizing this perspective is to attract more foreign consumers and promote Ukrainian goods and brands. Keywords: drop shipping; manufacturer; implementation; operation; modernization; business.

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