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Open access

Martin Vojtek, Martin Kendra, Jaromír Široký, Katarína Magdechová and Denis Šipuš

Abstract

Logistics is defined as an interdisciplinary science, which deals with coordination, harmonization, connection and optimization of material, product and service flows including flows of information and finance. The main aim of logistics is to satisfy needs of the customer with importance of quality aspect and optimal costs. The paper is focused on practical logistic problems within the company, its suppliers and customers so overall supply chain is analyzed there. The aim of the paper is to provide practical simulation and calculation of selected logistic examples such as procurement, storage and distribution on case studies. These logistic aspects are analyzed in way, how are they explained to students in university educational process on school subjects that deal with logistics in some case. The simulation of storage process is done with specialized software called Byron, which is also used for educational purposes.

Open access

Mohammad Zainul and Zakky Zamrudi

Abstract

This paper is trying to examine the effect of social media in the use of personal transport for leisure purposes. Youngster are frequently identified as being adventurous and highly mobile, even few researcher modes of transportation choices play in important role in enhancing and fulfilling their desired experiences. In this paper, we would like to know the role of social media in enhancing the personal transport desire in south-east Kalimantan. Social media role is measured by borrowing the theory of technology acceptance model by using two variables namely perceived ease of use and perceived usefulness. A quantitative method was used to measure the variable by using questionnaire given to 230 respondents given to university student near south-east Kalimantan. The gathered data is analyzed by using generalized structured component analysis. The finding in this research indicates that both perceived ease of use and perceived usefulness of social media could affect individual intention to use personal transport. However, the larger effect has reflected by perceived usefulness. This means that social media has been recognized as a good reference to stimulate leisure by using personal transport.

Open access

Ľubica Simanová and Renata Stasiak-Betlejewska

Abstract

The article focuses on the analysis of the regular monitoring of logistics processes in enterprises of various sectors of the economy of the Slovak Republic such as engineering, automotive and electrical engineering, woodworking industry, building industry, agriculture, other industry, trade and services. The first part of the research is the assessment of the basic characteristics of enterprises that focus on logistics processes when managing change. The subject of the survey was the characteristics of the size of the enterprises, the subject of business, the industry and the level of return on equity (ROE). The main objective of the research was to find out the use of new concepts and methods for improving logistics processes and their impact on ROE. The research used methods of questionnaire research, descriptive statistics, pivot table and Chi-quadrat test. The result of the research was to determine the dependence of ROE height on the use of new concepts and methods in improving logistics processes.

Open access

Ján Dižo, Miroslav Blatnický, Stasys Steišūnas and Gediminas Vaičiūnas

Abstract

This article deals with computer analyses of output quantities of a railway vehicle depending on changing of parameters of suspension system. A passenger car was chosen for dynamic analyses. An analysed passenger railway vehicle uses two stage suspension system composed of coil springs and hydraulic dampers. Stiffness of coil springs of primary and secondary suspensions were defined for two states and its influence on output values in terms of quality and quantity was evaluated. As output variables, values of forces in a wheel/rail contact and accelerations in several locations on a wagon body floor were chosen. Values of forces in a wheel/rail contact indicate dynamic response of a railway vehicle running in terms of running safety and values of accelerations serve as important input for evaluation of passenger ride comfort.

Open access

Dulal Sarker, Abdur Rouf Khan and Muhaiminul Islam

Abstract

Land use-transportation comprehensive planning has become an increasingly common technique in regional and sub-regional planning processes. Since land use management strategies act as an effective tool to achieve transportation planning objectives, it is important to identify the relationship between land use pattern and travel behaviour. This study examined the relationship between transportation and land use in Rajshahi city. Rajshahi is a major urban, commercial and educational centre of Bangladesh. In Rajshahi, Shaheb bazaar zero points to New Market road is one of the most important roads. After construction of this road in 2013 intense development has taken place beside it. To identify this primary relationship data has been collected from different types of field survey. Then the impact of land use and transportation has been determined by comparing with the previous database. The findings of the study show that there exist a reciprocal relationship between land use and transportation system and the impacts on both. The study also notes that the impact of transportation on land use is more than the impact of land use on transportation. The study will help to control the haphazard growth and traffic congestion of the concerned area in the future.

Open access

Milan Dedík, Matúš Dlugoš, Jozef Gašparík and Borna Abramović

Abstract

The development of the transport sector is a long-term and continual process. This leads to a gradual increase in economic performance, economic growth and a deeper integration of the EU countries into the global economic structures. This contribution is focused on the problem of usage of the east – west corridors for the freight transport in transit. There are proposed for the new transport connections between China and Europe. The aim of the new connections is speed up of transport process of good flows. When proposing new corridor routes and new options for interconnection of the European rail network, basic deterministic methods of network analysis - the critical path method of the CPM and the CCM critical chain can be used. The aim is also to offer new options for development of rail transportation.

Open access

Theophilus C. Nwokedi, Donald I. Kalu, Callistus C. Igboanusi, Gbasibo L. Addah and C. U. Odumodu

Abstract

Nigeria has been unable to develop a viable ship building industry over the years notwithstanding several efforts of government at achieving that. The study aimed to identify and determine the principal component constraints to ship building development in Nigeria. Adopting the theory of constraint approach, survey research design was used in which primary data were obtained from questionnaire responses from employees and management staff of shipyards in the ship building clusters in Lagos, Port-Harcourt and Warri. The data collected were analyzed using principal component factor analysis, analysis of variance and pie-chart. It was found that the principal component constraints to the development of the ship building sector in Nigeria include financial constraint with Eigen value of 31.23%, infrastructural constraint with Eigenvalue of 26.35% and poor skill and technical know-how with Eigen value of 16.23%. This implies that financial constraints, poor skill and lack of technical know-how and infrastructural constraints contribute a cumulative Eigen value of 74.259% and thus constitute the dominant constraints impeding the performance of ship yards, ship building and repair sector in Nigeria. Development of national ship building and dry-docking funding scheme, ship building research and training center among other things were recommended.

Open access

Margareta Nadanyiova, Lubica Gajanova, Dominika Moravcikova and Judit Olah

Abstract

The aim of this article is to define the theoretical basis of brand value from the viewpoint of domestic (Slovak) and foreign authors and its impact on sales. This includes a regression and correlation analyses focused on investigate the dependence between the brand value and sales in automotive industry. The basic sources of research were secondary data obtained from worldwide surveys in the form of rankings published by Forbes magazine, annual reports of companies and published professional publications. General scientific methods were applied for the processing of the data, as well as mathematical-statistical methods to evaluate the data collated from the results of regression and correlation analyses and test the linear independence. The results of analyses show that the brand value and sales are linearly dependent, specifically it is medium-strong direct linear dependence. Therefore, the brand value has a direct effect on sales volume.

Open access

Daniel Varecha, Robert Kohar and Frantisek Brumercik

Abstract

The article is focused on braking simulation of automated guided vehicle (AGV). The brake system is used with a disc brake and with hydraulic control. In the first step, the formula necessary for braking force at the start of braking is derived. The stopping distance is 1.5 meters. Subsequently, a mathematical model of braking is created into which the formula of the necessary braking force is applied. The mathematical model represents a motion equation that is solved in the software Matlab by an approximation method. Next a simulation is created using Matlab software and the data of simulation are displayed in the graph. The transport speed of the vehicle is 1 〖m.s〗^(-1) and the weight of the vehicle is 6000 kg including load. The aim of this article is to determine the braking time of the device depending from the input data entered, which represent the initial conditions of the braking process.

Open access

Damian Marcinkowski, Mirosław Czechlowski and Tomasz Grzelak

Abstract

The second-generation liquid biofuels are fuels derived from non-food raw materials, i.e. waste cooking oils and animal fats. They are waste raw materials from the agri-food industry, hence their quantity is limited, and their quality depends, inter alia, on the place of their acquisition. Considering the fact that rheological properties of liquid biofuels are closely correlated with the quality of raw materials from which they are obtained, the industrial production of biofuels from waste fats requires development of new analytical methods, allowing for a quick assessment of the quality of the obtained products. The aim of the study was to confirm the possibility of using near infrared spectrometry to assess the content of methyl palmitate in biofuels produced from waste cooking oil. The calibration models were based on 41 absorbance spectra recorded in the range of 400-2170 nm for samples containing from 0 to 5 % of methyl palmitate. The obtained results confirmed that there is a possibility of effective detection of the concentration of this ester in biofuel using the spectrum in the range of 1644-1778 nm. The developed PLS calibration models are characterized by a determination co-efficient (R2) exceeding the value of 0.99.