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Found 6319 publications

Health Tourism—A New System-Model Based on the Four Basic Elements

Erzsébet Printz-Markó Elisabeta Ilona Molnar

Publication Name: Springer Proceedings in Business and Economics

Publication Date: 2020-01-01

Volume: Unknown

Issue: Unknown

Page Range: 253-267

Description:

Due to the complexity of health tourism and due to the excellent thermal, mineral, and medicinal water qualities of Hungary and Romania, as water is one of the four ancient elements determined by Aristotle, such treasures play an important role not only in the field of economy, but also in social life. As one of the oldest forms of tourism is spa-tourism, the present research focuses on this branch of health tourism, which, in its offers, has as its main focus on thermal and medicinal waters in Hungary and Romania. Thanks to the favorable geological conditions of the two neighboring countries, the attraction-based system of health tourism is built on a multi-element model. Based on this, the paper aims at discussing the system of water-based health tourism based on the four ancient elements. These four elements are water, fire, earth, and air. Making use of Lee’s European Health and Wellness Model Services, we have created a four-element water-based health tourism system. The modeling of the system consists of a survey of tourism in the selected spa/wellness facilities. In case of successful testing, the model should be incorporated in the terminology of health tourism in both countries.

Open Access: Yes

DOI: 10.1007/978-3-030-43449-6_14

A study of digital marketing tools usage habits among Hungarian tourists

Eva Happ Zsuzsa Ivancsóné Horváth

Publication Name: Geojournal of Tourism and Geosites

Publication Date: 2020-01-01

Volume: 32

Issue: 4

Page Range: 1283-1289

Description:

Digitalisation has become inevitable these days. It has been in the forefront due to innovations, the development of informat ion technology tools, internet and smartphones transforming the tourism industry, too. Digital marketing tools and methods have attracted an increasing interest among the Hungarian tourists, as well. The study focuses on the spread of these opportunities in Hungary. The paper’s aim is to investigate when and in what way Hungarian tourists participate in digital tourism. Secondary and primary research was con ducted between October 2018 and March 2019 with a sample of more than 500 respondents. The results show how Hungarian tour ists are related to the digital development in tourism. This study also explores the link between the risk of the activities and the usage of online tools. T he study advances into the literature about the importance of digitalisation in tourism. It shows specifically where service providers need to pay close attention in the marketing communication, in order to remain competitive and gain a competitive advantage.

Open Access: Yes

DOI: 10.30892/GTG.32414-570

Model-Free Control of Finger Dynamics in Prosthetic Hand Myoelectric-based Control Systems

Claudiu Radu Pozna Emil M. PETRIU Radu Emil Precup Teodor Adrian TEBAN Adriana ALBU Raul Cristian ROMAN

Publication Name: Studies in Informatics and Control

Publication Date: 2020-01-01

Volume: 29

Issue: 4

Page Range: 399-410

Description:

This paper proposes an approach to the tuning of model-free controllers for the midcarpal joint angles, which are important finger angles that ensure the desired finger dynamics in prosthetic hand myoelectric-based control systems. The process in these control systems is characterized by fuzzy models that operate with myoelectric signals obtained from eight myoelectric sensors and past inputs and/or outputs, where the controlled outputs are five finger angles. Since the fuzzy models exhibit very good performance as shown in authors’ recent papers that produced evolving fuzzy models, they are used to simulate the process behaviour. The Multi Input-Multi Output (MIMO) control system structure consists of five separate Single Input-Single Output control loops with the most simple model-free controllers represented by intelligent Proportional (iP) controllers, separately designed and tuned for each finger. Digital simulation results are included to suggestively illustrate the very good performance of the control systems with iP controllers. The MIMO control system performance is compared with that of the same system but with Proportional-Integral controllers, which are optimally tuned in a model-based manner by a metaheuristic Grey Wolf Optimizer (GWO) algorithm. The fair comparison is ensured by the optimal tuning of the free parameters of iP controllers in a model-based manner using GWO.

Open Access: Yes

DOI: 10.24846/V29I4Y202002

Intelligent production of the future - first results of a survey

No authors available

Publication Name: 17th IMEKO TC 10 and EUROLAB Virtual Conference "Global Trends in Testing, Diagnostics and Inspection for 2030"

Publication Date: 2020-01-01

Volume:

Issue:

Page Range: 402-407

Description:

Witnessing the unprecedented scale and speed of industry transformation due to digitization in general and the emergence of smart solutions in all aspects of manufacturing in particular, it is well justified to deal with the question of what production of the future will look like. How intelligent will it be when the hard challenges and disruptive effects of the changes will be overcome, and what are the chances to meet the critical requirements of collaboration and cooperation, flexibility and competitiveness? What are the technological and management tools to avoid being stuck in the so-called pilot purgatory? These issues are addressed in an international survey based on a questionnaire specifically tailored to conclude to viable options and recommendations for industrial companies. The results that are mostly in conformity with those published in the literature show that there is yet a lot to do to facilitate a definite turn in the mindset of the actors and to make them realize the relevance of simultaneous and continuous cultural and technological development.

Open Access: No

DOI: DOI not available

Numerical plastic analysis of non-prismatic reinforced concrete beams strengthened by carbon fiber reinforced polymers

Majid Movahedi Rad Sarah Khaleel Ibrahim

Publication Name: Proceedings of the 2020 Session of the 13th Fib International Phd Symposium in Civil Engineering

Publication Date: 2020-01-01

Volume: Unknown

Issue: Unknown

Page Range: 208-215

Description:

The non-prismatic reinforced concrete (RC) beam considered a unique case in structural engineering as it has variable depth all over beam section and it doesn't have sufficient information in structural codes, this can put structural engineers in a challenge to predict how this beam will react under specific types of loads or with different geometrical variables and strengthening existence. In this research, concrete plastic damage constitutive model developed and used to explore the shear strength of non-prismatic RC beam structure. Furthermore, in order to improve the shear strength of existent RC beams, Carbon Fiber Reinforced Polymers (CFRP) strips are attached to the surface of the critical sections. For this aim, initially numerical model was calibrated according to the data obtained from laboratory tests then a series of numerical simulations with different variables are carried out to investigate the shear behavior and these variables were: haunch angle a value and CFRP strips existence (composite status). The numerical results show that changing beams geometry (haunch angle a value) can have an influence over shear strength, in addition, using CFRP strips has an obvious effect on the failure behavior of the non-prismatic RC beam structure. Finite element simulations are executed by using ABAQUS.

Open Access: Yes

DOI: DOI not available

Numerical study on the micro-mechanical behaviour of artificial granular materials

No authors available

Publication Name: fib Symposium

Publication Date: 2020-01-01

Volume:

Issue:

Page Range: 86-93

Description:

Numerical models for the simulation of the micro-mechanical behaviour of granular assemblies have a wide range of applications, for instance in material science, process engineering, environmental engineering, railway engineering and geotechnical engineering (in this study we examined one macro-grain but what important is behaviour of granular assemblies). In this examination, experimental tests and numerical computations using the discrete element method (DEM) are carried out to evaluate the micro-mechanical behviour of the granular materials. For this purpose, artificial materials are taken into consideration for experimental Brazilian laboratory tests, and then according to the experimental results the DEM model is calibrated. Artificial crushable materials are produced by mixing cement and silt according to their mass ratio, in which cement can provide bonding and silt is the main filling material. In the DEM model, a 3D crushable granular material ‘macro-grain’ is built up from a large number of micro-grains which are associated according to crushable parallel bond properties. The behaviour of the single crushable grains and the fragmentation patterns under different contact configuration and load position are studied. The DEM simulation results show that the contact configuration type and load position affect the fragmentation patterns and loading capacity.

Open Access: No

DOI: DOI not available

Application of quadtrees in the method of fundamental solutions using multi-level tools

Csaba Gáspár

Publication Name: Sema Simai Springer Series

Publication Date: 2020-01-01

Volume: 23

Issue: Unknown

Page Range: 41-57

Description:

The traditional version of the Method of Fundamental Solutions is revisited, which is based on using external sources. The sources are defined in a completely automatic way using a quadtree cell system controlled by the boundary of the domain. This results in a spatial density distribution of sources which decreases rapidly when going far away from the boundary. A similar technique is also proposed, when the sources are located along the boundary (which can be automated easily) and the collocation points are moved into the interior of the domain. In this case, the boundary conditions have to be properly redefined at the inner collocation points, This is done by using boundary-controlled quadtrees again. Both techniques can be embedded in a multi-level context in a natural way. The accuracy of the resulting methods are less than that of the traditional Method of Fundamental Solutions, but it is still acceptable. However, the computational cost is more moderate and the problems of singularity and the extremely ill-conditioned matrices are avoided.

Open Access: Yes

DOI: 10.1007/978-3-030-52804-1_3

Performance and analysis of unitized stacked load units under vibration simulation

Péter Böröcz Bence Molnar

Publication Name: Fme Transactions

Publication Date: 2020-01-01

Volume: 48

Issue: 1

Page Range: 96-101

Description:

The unitized loads are the major form of the packed product transportation in logistics, and in most of the cases the packages are fixed to the pallet with straps, stretch film or these combinations to avoid the possible damages of products inside. During transportation various physical events such as vibration affect the product-packaging system. The nature of this vibration between the layers of stacked unit is not fully researched and understood. This paper focuses on the different motion of the layers in the unitized load in the function of the fixing modes using laboratory vibration simulations. Therefore, multiple unitized loads were built from the same quality corrugated paper boxes in three layers with various fixing modes to measure each layer motion separately. To carry out the simulation procedure, acceleration and vibration intensity on each layer was observed under sine and random vibration simulation. The recorded data shows, which layer motion is the most disparate from the excited motion, and which fixing variant causes this difference.

Open Access: Yes

DOI: 10.5937/fmet2001096M

Blockchain and supply chain sustainability

Abderahman Rejeb Karim Rejeb

Publication Name: Logforum

Publication Date: 2020-01-01

Volume: 16

Issue: 3

Page Range: 363-372

Description:

Background: Supply chain sustainability is a central concern of most organizations. The main objective of sustainable supply chains is to create and maintain long term economic, social, and environmental value for all stakeholders involved in delivering products and services to markets. As sustainability constitutes one of the critical drivers of innovation, the recent emergence of blockchain technology typifies the disruptive impact of digital innovation on supply chain sustainability. Blockchain is a foundational technology that poses a shift in the development of supply chain sustainability. Methods: Despite the increasing importance of blockchain in improving supply chain efficiencies and bringing societal changes, research investigating its potentialities from the lens of sustainability is scarce. Therefore, the primary goal of this paper is to fill this knowledge gap and synthesize the literature from leading journals on the topic of blockchain and its relation to supply chain sustainability. Papers were collected from different scientific databases and carefully analyzed. The possibilities of blockchains are identified and classified according to the triple bottom line framework, namely the economic, social, and environmental dimensions of sustainability. Results and conclusions: The majority of studies focused on the economic implications of blockchains on supply chains. The sustainable economic aspects of the technology identified in the reviewed literature are mostly the transformational potentials of blockchains and their capabilities to drive new disintermediated business models, higher operational efficiencies, cost advantages, and additional sources of value creation. The social empowerment of supply chains is found through the ability of blockchain to create trustful relationships among supply chain partners, increase food safety, support humanitarian logistics, and promote social equity. Moreover, firms attempting to move forward in their environmental policies and strategies can use blockchain to extend their efforts to improve their environmental practices across the supply chain, reduce the strain on energy and natural resources, and offer environmentally friendly products.

Open Access: Yes

DOI: 10.17270/J.LOG.2020.467