L86 - Information and Internet Services; Computer SoftwareReturn

The present article is focused on the analysis of selected indicators that characterize the economic sector of information and communication technology at regional levels in the Czech Republic between years 1995 and 2015. The aim of this paper is to evaluate, by a specific index that is based on a combination of point method and economical-geographic methods, regional divergences in the area of the economic branch of information and communication technology and defines development and regional differences in the ICT branch at NUTS3 level of the regions of the Czech Republic. The quest is to find regions where information and communication technology is developing and to define an order (ranking) of regions that succeeded in developing the ICT sector. The analysis of the information and communication sector which is defined by NACE Rev.2., in section J, is based on empirical data from the Czech Statistical Office at NUTS3 regional level.

With the continuously evolving communication technologies followed by improvements in the educational process, this paper aims to identify the development trends of communication channels and tools used by students during their study. For this purpose, a longitudinal study was designed and the surveys were carried out in 2013, 2015 and 2017. The main contribution lies in the description and identification of trends, including the recommendations on improving the quality and efficiency of the educational process regarding the choice of suitable communication channel. The results showed that the trends are represented by the increasing importance of social networks and the demand to integrate multiple communication channels into one service. The necessity to provide more educational resources through mobile applications was also found, especially in the context of learning management systems.

E-government benchmarking frameworks are important as they guide countries' focus of their efforts to develop information and communication policies and allocating resources to implement these strategies. With the decrease of importance of basic information society indicators in the past and use of new technologies and trends, new criteria and approaches needed to be introduced in measuring e-government development. Therefore, the existing frameworks should be updated and reframed. The main aim of this paper is to examine a progress in the structure of these benchmarking frameworks and propose a new benchmarking framework, which uses modern technologies such as cloud computing, open data, big data, social media and e-participation. It focuses on this new set of domains of activities and assesses many of them. Methods of decomposition and aggregation are used.

This article is focusing on analysis of sector of information and communication technology in the Czech Republic between years 1995 and 2012. Branch of information and communication technology is one of the most important economic activities because of potential for further growth of output performance and productivity. In this short study development of information and communication sector during the selected 18 years in aggregate economic levels is described through performance measured by gross value added, sectoral employment and also sectoral productivity. Emphasis is placed on developing information and communication technologies in selected 14 regions of the Czech Republic. The main aim is to find the regions which are concentrated economic activities related to information and communication technology in and to evaluate their success in interregional comparisons. It was found out that the overwhelming majority of economic activities associated with information and communication technology is concentrated in four - five regions of the Czech Republic and the regional disparities in the area of this economic branch have tendency to deepen.

The term "cloud computing" has been used frequently a lot lately. One of the distribution models of cloud computing is Platform as a Service also known as PaaS, where the providers provide complete tools for the support of the whole life cycle of development and providing of applications. One of the providers of PaaS is also Google with its Google App Engine. Applications of the Google App Engine are developed with Java Enterprise Editions technologies like Java Servlets and JavaServer Pages. One of the services offered by the Google App Engine is also Datastore database. Unfortunately, this database is not relational, which makes it impossible to use all the common tools of the Java Enterprise Editions web applications to the access the data. In the JavaServer Pages these tools are mainly tags of JavaServer Pages Standard Tag Library of the SQL type. This article will show you how these tools can be adapted for the use with the Datastore database.

The state-of-the-art methods for securing e-commerce transactions resistant even to compromised client workstation are based on using independent security devices or separate communication channels. These systems either do not support non-repudiation and/or are expensive and thus suitable only for special cases, where such additional costs are justified. In this article a new cheaper transaction verification method, which supports non-repudiation, is described. A cell phone or tablet communicating with the client workstation using qr-codes is used as an independent security device. There are no additional costs for service providers except for initial SW implementation. The proposed method brings better transaction verification to the areas where the usage of current methods is uneconomical.

Actual ERP systems use for data storage mainly relational databases, but in specific situations, particularly for modeling complex relationships can also use the object databases. These information systems are usually developed using object-oriented programming languages like C++, Java, C #, and it would seem natural that for the data storage they also use the object-oriented databases instead of the relational databases, thus dispensing with the need for mapping objects into relations. But this is not true especially because of two reasons. The first reason is historical and the resulting enormous widespread of the relational databases, which were here before the object-oriented databases. The second reason for minority use of the object-oriented databases is the minimum compliance of standards by the object DBMS (Database Management System) producers, such as SQL standard in relational databases, resulting in differences in the API (Application Programming Interface) of object-oriented DBMS and the impossibility to change the object-oriented DBMS in an application without having to rewrite the code of an entire application which is built on that object-oriented database. The following paper attempts to resolve this issue.