1. Improved formal verification of SDN-based firewalls by using TLA+Tatjana Kapus, 2023, original scientific article Abstract: In an article published in IEEE Access in 2020, researchers present an approach to using TLA + for the formal verification of whether a network of SDN (Software-Defined Networking) switches implements the filtering rules of a given monolithic firewall. The distributed as well as monolithic firewalls are specified with TLA + . It is shown that the correctness of the former with respect to the latter can be verified automatically by using the TLC model checker. The main contributions of this paper are the following improvements of that approach. Firstly, by specifying switches without using any variables, the time needed for the model checking is reduced significantly. For example, the verification of the same networks takes a few seconds with the new approach and does not end after several hours with the previous one. Secondly, the following problem is solved. With the latter, if a monolithic firewall allows a packet to pass through, all the paths in the distributed firewall which the packet is routed on must allow the same. Otherwise, the model checker proclaims the distributed firewall to be in error. We present an additional approach to the verification, which gives a positive answer if at least one of the paths allows the packet to pass through.
Keywords: firewalls, formal specification, formal verification, logic, model checking, software defined networking
Published in DKUM: 04.12.2023; Views: 285; Downloads: 22
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2. An organizational framework for logistic platform and its subtypes in a search for more logistically attractive regionsBrigita Gajšek, Jure Kovač, Benjamin Hazen, 2018, original scientific article Abstract: Background and Purpose: Regional sustainable economic growth on logistics bases requires the coordinated development of infrastructure, information and communications technology, and proactive education of logistics specialists. The goal is reachable with regional logistics platforms (RLPs). This current research develops a theoretical model for RLPs, consisting of (1) basic constituents, (2) an implementation area, and (3) stakeholders' and operational benefits.
Design/Methodology/Approach: We employed a balanced qualitative and quantitative approach using multiple case study and survey methods.
Results: Systematic case study research has identified 12 “most frequently” highlighted RLP constituents and 3 areas of implementation, which were further proven by a survey. RLP's beginnings may be spontaneous until a critical mass of interested stakeholders emerges with a clear vision and start-up energy for a breakthrough. A theoretical model for RLPs is proposed.
Conclusion: The secret of a successfully developing a logistics region lies in its ability to develop a mechanism for the managing and coordinating a particular logistics system's development and operation, an area that should be further researched. This study's findings provide valuable insights into the many aspects of RLPs, which can be useful for regional authorities and business owners who are eager to stimulate regional economic growth.
Keywords: logistics platform, organizational structure, networking, governance, regionalization, transportation
Published in DKUM: 07.05.2018; Views: 1776; Downloads: 336
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3. The prospects for consumer-oriented social mediaRoger Clarke, 2014, original scientific article Abstract: Background and Purpose: The term ‘social media’ refers to a cluster of applications and online services that support human interaction and content broadcasting and sharing. Current services are isolated islands or ‘walled gardens’, and are based on a business model that is highly exploitative of individuals and their data.
Design/Methodology/Approach: Surveys of the refereed literature have been undertaken on several occasions during the period 2012-13. Reviews were conducted of social media services that are reasonably described as ‘consumer-oriented’. Media reports on those services were uncovered. The available information was then subjected to analysis, including reflection based on prior research conducted by the author.
Results: Required characteristics of consumer-oriented social media, and barriers to emergence and adoption of such services were identified. That provided a basis for proposing means to overcome those barriers. Key impediments to the emergence of such services were identified, and means of overcoming the impediments outlined.
Conclusion: An alternative, consumer-oriented approach is feasible, involving open architecture, inter-operability and portability features, fair terms and privacy-sensitivity.
Keywords: social media, social networking service, interoperability, terms of service, privacy
Published in DKUM: 22.01.2018; Views: 1676; Downloads: 400
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4. The influence of social networking sites on recruiting human resources in the Czech republicLucie Bohmova, Antonín Pavlíček, 2015, original scientific article Abstract: Background: This paper is focused on the usage of social networking sites (SNS) for human resources departments in the process of hiring new employees. It also maps the development and influence of SNS on recruiter's behavior and customs. The main aim is to find out, whether SNS could/will replace traditional online job boards in the Czech Republic. The motivation for the research is to determine whether SNS can be used for serious and practical business purposes.
Methods: The paper presents authors’ empirical research with two interconnected instruments used for data collection: (1) Questionnaire with 15 questions devoted to usability, evaluation and comparison of SNS with job portals (N=286 HR specialists) and (2) Comparison of 3 online job advertising methods – job portals, SNS and business website.
Results: HR specialists regularly use publicly available information on candidates’ Facebook profiles. Similar results have been observed using both instruments. SNS's in the Czech Republic are not yet used by recruiters as the main tool for recruitment, however, are often used as a support tool for decision making in the final stage of recruitment. Use of SNS's by recruiters is universal; we have not found any significant differences in terms of demographics (men, women, old, young HR professionals). The rate of utilization of SNS's by recruiters in the Czech Republic is gradually increasing, but does not reach the US level.
Conclusion: Our findings confirm the rising importance of social networking sites (SNS) usage as a new recruiting technology. However, as a major player in the field of recruitment, job boards (eg. Jobs.cz) are still important. However, the expectation is that in the near future, this will change and SNS‘s may replace the job boards.
Keywords: human resources, new trends, social networks, social networking site, SNS, job boards, competitive advantage
Published in DKUM: 22.01.2018; Views: 1395; Downloads: 368
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5. Exploring the role of business social networking for organizationsDamjana Jerman, Bruno Završnik, 2015, original scientific article Abstract: This article explores the relationship between communication, with the emphasis on public relations, and social network perspectives. What, then, does social networking for business mean in communication, particularly in public relations? This paper argues that business social networking play an important role in improving organizations communications. The goal of our paper is to identify the basic characteristics of social networks and its role for public relations for the effective implementation of social networking initiatives and tools in the workplace. Business social networking tools such as Facebook and LinkedIn are being used by organizations to reach the corporate objectives and to create a positive company image. Specific social networks, such the personalised networks of influence, are perceived to be one of the main strategic resources for organizations.
Keywords: internal communication, business social networking, public relations
Published in DKUM: 06.07.2017; Views: 1397; Downloads: 358
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6. Dynamics of Slovenian Entrepreneurship : Slovenian Entrepreneurship Observatory 2008Miroslav Rebernik, Karin Širec, Polona Tominc, Ksenja Pušnik, Maks Tajnikar, Dijana Močnik, Mojca Duh, Matej Rus, Barbara Bradač Hojnik, Katja Crnogaj, Rok Podgornik, 2009, scientific monograph Abstract: Part one presented the Slovenian entrepreneurial landscape in the year 2007. The second part compared Slovenian and EU-27 economy on various indicators. Part three analysed the process of firm entries in Slovenia while controlling for the specificities of regions and time, from 2000 to 2005. The fifth part analysed the impact of technical and cost efficiencies on firms’ income position and the relationship between supply and demand. The analysis examined tourism firms in Slovenia. The sixth part dealt with regional analysis of the early-stage entrepreneurship in Slovenia. The aim was to gain insight into developmental particularities of Slovenian family businesses and institutional support offered to family businesses in Slovenia. The seventh part examined different reasons for outsourcing according to strategic and traditional reasons. Lastly, we examined networking activities between enterprises and entrepreneurs. The empirical research revealed there are certain differences among Slovene SMEs according to their company size and gender.
Keywords: Firm Entries and Exits, Technical and Cost Efficiency, Family Firm Development, Oursourcing, Networking between Enterprises and Entrepreneurs
Published in DKUM: 18.01.2017; Views: 1515; Downloads: 152
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7. THE DEAF AND HARD OF HEARING ON SOCIAL NETWORKING SITES: IDENTITY, COMMUNITY BUILDING AND CONNECTIONS BETWEEN COMMUNITIESInes Kožuh, 2015, doctoral dissertation Abstract: Social networking site use among the d/Deaf and hard of hearing has triggered a growing interest in examining the impact of online activities on their experiences. Despite extensive research on the use of social networking sites among hearing users, only a few studies have focused on use among the d/Deaf and hard of hearing. There is an evident lack of comprehensive research on d/Deaf and hard of hearing users’ experiences with social networking sites in which both the effects of the users’ characteristics on their identification with other users and their tendency to connect with members of online communities are examined. In our study, we developed a theoretical model for examining D/HH users’ experiences with social networking sites. The model investigates the relationships and effects among the aspects (identity, community building and connections between communities) and factors (hearing loss, educational background, communication situation and use of technology) relating to the experiences of d/Deaf and hard of hearing with social networking sites. The primary purpose of the model was to define how the aspects are associated with each other and how the factors influence the aspects. In line with the model, an online questionnaire in sign and written language was developed. A study was conducted in Germany, Slovenia, Austria and Switzerland, where the questionnaire was completed by 199 German, 43 Slovene, 21 Austrian and 20 Swiss d/Deaf and hard of hearing users of social networking sites. Due to sample size the main emphasis was on the results gained from the study conducted in Germany. It was shown that online Deaf identity is negatively related to online hearing identity, but positively related to community building and connections among communities. While community building is positively related to connections between communities, online hearing identity is neither related to community building nor connections between communities. Additionally, hearing status was found to have a significant effect on online Deaf and online hearing identity. Frequency of use of social networking sites has no significant effect on any aspect, while frequency of posting videos is the only activity having a significant effect on community building. Frequency of communication with the deaf in sign language on social networking sites has a positive effect on online Deaf identity and community building; frequency of communication with the deaf and hard of hearing in written language has a further positive effect on community building. Results of examining the effects of different countries on the aspects showed that Slovene users were more engaged in community building and connecting with members of other communities than German users. These findings imply a high potential for using social networking sites in the education process. Accordingly, we developed recommendations for teachers, and designers and developers of educational processes in order to assure efficient communication support for the d/Deaf and hard of hearing. These recommendations might be most beneficial in distance education in terms of globalization, since social networking sites provide opportunities for inclusion of students from abroad. Similarly, social networking sites provide wider opportunities for work between mentors and mentees, since questions can be posed and answers can be given directly on social networking sites.
Keywords: Deaf and hard of hearing, social networking sites, online identity, online community, community building, connections between communities
Published in DKUM: 24.04.2015; Views: 2318; Downloads: 311
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