Iskanje po katalogu digitalne knjižnice

Opis: Traditionally, in robotic surface finishing, the entire workpiece is processed at a uniform speed, predetermined by the operator, which does not account for variations in the machinability across different regions of the workpiece. This conventional approach often leads to inefficiencies, especially given the diverse geometrical characteristics of workpieces that could potentially allow for different machining speeds. Our study introduces a region-based approach, which improves surface finishing machining time by allowing variable speeds and directions tailored to each region’s specific characteristics. This method leverages a task-oriented strategy integrating robot kinematics and workpiece surface geometry, subdivided by the clustering algorithm. Subsequently, methods for optimization algorithms were developed to calculate each region’s optimal machining speeds and directions. The efficacy of this approach was validated through numerical results on two distinct workpieces, demonstrating significant improvements in machining times. The region-based approach yielded up to a 37% reduction in machining time compared to traditional single-direction machining. Further enhancements were achieved by optimizing the workpiece positioning, which, in our case, added up to an additional 16% improvement from the initial position. Validation processes were conducted to ensure the collaborative robot’s joint velocities remained within safe operational limits while executing the region-based surface finishing strategy.
Ključne besede: robot surface finishing, collaborative robot, region-based machining, workpiece optimization, clustering, task-oriented machining, machining time optimization
Objavljeno v DKUM: 25.11.2024; Ogledov: 0; Prenosov: 17
Celotno besedilo (20,89 MB)

Opis: Colombia and its regions have abundant botanical wealth and climatic conditions suitable for the development of beekeeping. The Caribbean region is promoting the practice of beekeeping as an activity with benefits to ecosystems, human health, and socioeconomic positioning. The objective of this research is to determine the state of beekeeping in the Colombian Caribbean region and the areas where it is necessary to make improvement actions. The methodology was carried out following bibliographic reviews in databases and government reports, and the surveys were applied through Google Forms. The main results showed the need for more regulations in beekeeping and derived products, the low development of value-added products in the Caribbean region, as well as few technologies for the management of apiaries and the genetic manipulation of bees. The surveys of beekeepers corroborated their perception of some of the areas in which the beekeeping sector requires research and development.
Ključne besede: Colombian Caribbean region, genetic improvement, honey, value-added products
Objavljeno v DKUM: 01.10.2024; Ogledov: 0; Prenosov: 6
Povezava na datoteko
Gradivo ima več datotek! Več...

Opis: Background and Purpose: Part-time employment could be seen as a modern form of employment or a type of innovative organizational change. The average share of part-time jobs in the Czech Republic in the observed period of 2004-2016 was 3.9 % according to the OECD, in comparison to the average OECD value of 16.6%. The main question to arise was, are there any regional differences? The presented conclusions are based on a regional study in the Moravian-Silesian Region (MSR) in the Czech Republic where the median value of part- time jobs is 10%. The main goal is to evaluate the regional level of part-time job offers and identify the main opportunities and obstacles which cause the low number of these job positions. Design/Methodology/Approach: The paper is based on a quantitative study using a questionnaire-based survey, comprising 215 respondents – owners of small and medium-sized enterprises (SMEs) in the Moravian-Silesian Re- gion in the Czech Republic. The survey consists of 16 questions in three main areas: (i) Entrepreneurial motivation (1 item), (ii) External factors – Labour market problems (4 items), and (iii) Internal factors. Secondary information such as the results of earlier studies and regional government websites were used for data results comparison. All variables are compared in the context of the branch of business, number of employees, turnover, and age. Finally, a factor analysis was used to find the main way how to improve part-time job offers. Results: The variety of businesses and different regional locations opens up space for discussion regarding part- time job support. A factor analysis found five significant issues, which could affect local labour market and company behaviour. Conclusion: The added value of the paper can be seen in the factor identification, where internal willingness to sup- port part-time employment and qualification growth as organizational change must be in first place.
Ključne besede: flexibility, Moravian Silesian Region, part-time employment, SME
Objavljeno v DKUM: 10.10.2018; Ogledov: 1079; Prenosov: 157
Celotno besedilo (426,67 KB)
Gradivo ima več datotek! Več...

Opis: Special feature of Porabje settlements can be detected on some geographical aspects within the national settlement network. Unique features of these settlements even these features are not exclusive in themselves regarding all the administratively independent settlements form such a specific region of Hungary on the base of that the following can be stated. The Vend-region occupies prominent place among the regions of Hungary. These special features are studied in this study on the base of the following aspects: spatial location, history, ethnic composition, ethnographic aspects, small village and sporadic settlement characteristic and development possibilities. However Szentgotthárd (Monošter) played important role in life of the Slovenians in Hungary too the essay focuses on the analysis of the settlements in the Porabje region.
Ključne besede: Porabje, Slovenians in Hungary, ethnographical region, small villages, sporadic settlements, development possibilities
Objavljeno v DKUM: 17.04.2018; Ogledov: 1364; Prenosov: 75
Celotno besedilo (594,34 KB)
Gradivo ima več datotek! Več...

Opis: Background and Purpose: Providing a win-win situation for enterprises and the environment is raising the importance of eco-innovation. This article sheds light on the eco-innovation activities implemented within the clusters of the South Eastern European region (hereafter the SEE region). The main objective of this paper is to provide an outline of the situation pertaining to the implementation of eco-innovation activities in analyzed clusters. Methodology: Empirical evidence is provided through the performance of survey research with a sample of 52 clusters, encompassing 11 countries of the SEE region. The basic research method used in this research was a questionnaire developed for cluster organizations, with which we gathered the data and afterwards conducted descriptive statistics. Results: The findings demonstrate that the majority of analyzed clusters implement eco-innovation activities. The results indicate that 40 clusters out of 52 in all have set objectives with regard to eco-innovation support in their national or regional programs, followed by 35 clusters, which include objectives related to eco-innovation in their cluster strategies, and lastly, only 15 clusters are primarily focused on eco-innovation. Hence, our study depicting the current situation regarding the implementation of eco-innovation activities in analyzed clusters and clusters' orientation towards eco-innovation leads to us the discussion of why such differences in clusters occur. Conclusion: The huge differences related to the implementation of eco-innovation activities in clusters of the SEE region, can also reflect the level of the national/regional development in terms of economic indicators such as GDP and, at the same time, offer room for a lot of improvement, and an exchange of best practice.
Ključne besede: eco-innovation, clusters, SEE region
Objavljeno v DKUM: 10.01.2018; Ogledov: 1158; Prenosov: 132
Celotno besedilo (413,80 KB)
Gradivo ima več datotek! Več...