Refine
Year of publication
Document type
- Master's Thesis (160) (remove)
Is part of the Bibliography
- No (160)
Keywords
- India (4)
- Artificial intelligence (3)
- China (3)
- Consumer behavior (3)
- Crowdfunding (3)
- Germany (3)
- Innovation (3)
- Blockchain technology (2)
- Customer experience (2)
- Customer support (2)
Course of studies
- IMM - International Management (60)
- MBA - International Business Management (55)
- EMBA - Executive Master of International Business Management (15)
- INM - Informatik (8)
- MOS - Mobile Systeme (6)
- BAM - Business Application Architectures (2)
- IBM - International Business Management (2)
- IRCD - International Relations and Cultural Diplomacy (2)
- SSM - Security & Safety Engineering (2)
- BMP - Business Management and Psychology (1)
Subject of the thesis at hand is the analysis of symmetric block ciphers with a block length of 32 bit. It is meant to give a comprising overview over the topic of 32 bit block ciphers. The topic is divided in the examination of three questions. It contains a list of state of the art block ciphers with a block length of 32 bit. The block ciphers are being described, focussing on the encryption function. An SPN-based cipher with 32 bit block length is being proposed by rescaling the AES cipher.
The 32 bit block length results in certain security issues. These so called risk factors are analysed and mitigating measures are proposed. The result of the thesis is, that 32 bit block ciphers can be implemented in a secure manner. The use of 32 bit ciphers should be limited to specific use-cases and with a profound risk analysis, to determine the protection class of the data to be encrypted.
In this thesis, new methods for text classification are examined and compared to the current software of the DNB. Due to technical changes in the area machine learning in recent years, improvements in text classification have been achieved. The objective is to improve the subject groups allocation of the DNB and to allow a hierarchical classification based on the DDC system. The decision was made on the HDLTex tool, as the structure of the DNB data set and the DDC system, which supports a hierarchical classification, are perfectly designed for it. The use of RNN networks on both hierarchical levels improved the current software situation. Furthermore, the approach was examined, if a combination of the predictions of the two hierarchies levels leads to an additional improvement, which, however, produced a negative result. Both beginners and experts find themselves as readers of this master's thesis in the target group again.
In dieser Arbeit werden neue Verfahren zur Textklassifizierung untersucht und der aktuellen Software der DNB gegenübergestellt. Durch technische Veränderungen im Bereich Machine Learning in den letzten Jahren, konnten Verbesserungen in der Textklassifizierung erzielt werden. Dabei soll die Sachgruppenvergabe der DNB verbessert und anhand des DDC Systems eine hierarchische Klassifizierung ermöglicht werden. Die Entscheidung fiel auf das HDLTex Tool, da die Struktur des Datensatzes der DNB und das DDC System, welche eine hierarchische Klassifizierung unterstützt, perfekt darauf ausgelegt sind. Durch die Nutzung von RNN Netzen auf beiden Hierarchieebenen konnte eine Verbesserung zu der aktuellen Software erzielt werden. Weiterhin wurde der Ansatz untersucht, ob eine Kombinierung der Vorhersagen der beiden Hierarchieebenen zu einer aufbauenden Verbesserung führt, welches jedoch ein negatives Ergebnis hervorbrachte. Sowohl Anfänger als auch Experten finden sich als Leser dieser Masterarbeit in der Zielgruppe wieder.
This thesis investigates the effect choice options in e-commerce applications have on consumers’ decision making. Previous research showed that a large number of options
can affect consumers negatively. However, the conditions for such choice overload are unclear. After reviewing the existing research, the amount of information (entropy)
contained in a choice set and individual differences were determined as possible influencing factors in an online environment. In a choice experiment, choice sets with
varying information loads and an assessment of the Big Five personality traits were used to test the impact of the two identified factors on choice avoidance behavior. Results from chi-square-tests and a logistic regression model suggest choice overload but without entropy having an effect. A logistic regression model revealed that extraverted consumers are easier overloaded. A low Neuroticism score was found to be related to less occurrence of a too-much-choice-effect. Consumers with a high Openness score on the other hand choose one of the presented options more often and were therefore less often
overwhelmed by the assortment. An interaction effect between personality and the amount of entropy was not found. These findings extend the research on choice overload and offer valuable input for marketers targeting consumers online.
Rising globalization and digitization resulted in crises for the fashion industry. High competition and the interconnectedness of the consumers rule the market and put it under pressure. Owing to the growing power consumers possess, the requirements towards the fashion players are increasing. Customer experience is frequently discussed these days by academics as well as practitioners and emphasized as a competitive advantage. Yet, it is difficult to measure and to track its consequences.
Since customer experience is elusive and no industry specific measurement scale is defined, at first this work aims to identify relevant touch points of customer experience in the fashion industry by dint of a focused interview. The further objective of this paper is to enhance the comprehension of the touch points’ effects or rather the relationship of customer experience with brand loyalty. This is approached by a questionnaire based on the preceding qualitative analysis and the resulting model. This model defines the customer experience touch points as the independent variables while brand loyalty is examined as the dependent variable. The conducted linear regression analysis reveals a moderate effect of customer experience on brand loyalty and the touch points concerning the products as most relevant in this relationship. Additionally, the digitization aspect is addressed by the examination of the relationship in the offline and online channels separately. With respect to this, the present study recognizes that the extent of the customer experience’s impact on brand loyalty and the significant touch points vary across channels to a certain degree.
Mobile diagnostics – or mobile health in general – is highly appealing, not only for clinicians, but also for patients. It implies empowerment, in particular of those who are really in need, such as inhabitants of less developed regions within the world who have limited access to healthcare. It also implies simplification: Easy data management – a continuous flow of information. Therefore, development of miniaturized and highly integrated diagnostic systems allowing near patient “instant” diagnostics gain a lot of momentum since more than a decade. However, system integration requires time and a significant amount of investment. In addition, there is strong competition on resources from other emergent technologies, such as next generation sequencing which made the collection of e.g. human genome data less expensive and much faster. A more severe challenge is that mobile diagnostics require a change in healthcare management, e.g. towards integrated practice units. This, in turn, requires implementation of adequate reimbursement, standards of interoperability, training of staff, quality control. In 2010, Germany’s Federal Ministry of Education and Research (BMBF) launched the grant initiative Mobile Diagnostic Systems (MD, 2011─2015) as part of its high-tech strategy. MD aimed at generating knowledge on how microsystem technologies fit into German healthcare environments. On the basis of interviews with multidisciplinary MD actors, this thesis evaluated retrospectively how the publicly funded innovation network managed to overcome pre-defined external barriers of diffusion, including technology, regulatory affairs and market access. Retrospectives reveal internal barriers involving knowledge and technology transfer, negatively influencing generation of innovation. In particular, financing still represents a high hurdle for biotech innovators in Germany: Larger firms look predominately for market-ready or in-market technologies rather than prototypes and venture capitalists are rare or extremely risk-averse. Another important finding was, that actors involved were highly focused on individual work packages. This risks of not seeing the whole environment embedding MD. Consequently, potential opportunities may be missed, e.g. synergies with relatively close (DIALOC) or more distant initiatives (Global Health Delivery Project-based discussion rounds). This could be partly due to the fact that publicly funded networking activities provide less freedom-to-operate because of pre-defined milestones. In addition, further development of actors with respect to role playing (e.g. boundary spanning or innovation selling) is often not included in such “innovation packages”, but can help to maneuver change. Internal barriers need to be addressed first before targeting the major remaining external hurdle: Reimbursement. Although the latter was covered within MD, standardization of technology evaluation is still an unmet need which strongly influences the willingness-to-implement novel mobile diagnostics. Thus, the value added is to be demonstrated to justify adequate reimbursement. Achieving this goal can be successful, when innovation networking finds its path towards a common vision, e.g. towards value-based integrated healthcare. Pathfinding and visioning can be facilitated by process promoter with excellent network management capabilities. In addition, such a promoter could help to further develop engagement, openness and commitment of collaborators. Therefore, transfer of MD activities to established “top” networks or clusters is recommended for securing valuable knowledge generated. In this environment, an important next step – globalization of MD for ensuring future return on investment – could be triggered as well.
Since MD innovation was found to involve both product and service innovation, maneuvering change is particularly challenging for small and medium sized enterprises. These could benefit from engagement in innovation networking. Findings of this case study can help all direct and indirect actors in the field of MD innovation or in other high complex environments to reconsider pathfinding as well as role playing in networking.
Konzeption und Implementierung einer Cloud-basierten Sprachbedienung für das Smart Home-Labor
(2017)
This thesis has the purpose to investigate the oil price as the global economic factor but also to examine its implications on the worldwide economy. Thereby the determinants of the oil price are investigated by tackling the oil price itself from three different perspectives – the supply and demand framework, the prevailing world oil market structure as well as from the perspective of already statistically proven oil price determinants. In addition, the arising macroeconomic implications of oil price fluctuations on oil-importing and oil-exporting countries are examined. The investigation based on a thought experiment demonstrates the supply and demand framework to be unable to fully explain all past price changes. The examination on the prevailing market structure identifies the world oil market to be best described as a supply, pure, closed, partial and collusive form of an oligopoly. Analyzing the competitive behavior of the world oil market on three levels identifies non-OPEC producers’ competition to behave in a Cournot manner whereas among OPEC producers Saudi Arabia is identified to be a Stackelberg-follower with certain conditions while at the same time permanently bearing the ambition to become the Stackelberg-leader. The identification on the best describing oligopoly model for the overall industry is inconclusive. Investigating OPEC’s cartel hypothesis does not fully exclude its collusive behavior but denies the OPEC to be described as a prime example of a cartel. The examination of already existing econometric analyses identified a total of 13 determinants to play a key role in the oil price definition process. Investigating the arising macroeconomic implications of oil price fluctuations show oil price changes to be of great importance for the overall economic performance and is best described as a form of a positive of negative vicious circle in which the interconnected second or even third round effects intensify the implications on the macroeconomic activity.
Open Educational Resources (OER) in der Hochschullehre - Anwendungsfall Informationssicherheit
(2016)
Das Ziel dieser Arbeit ist es, die Chancen von Open Educational Resources (OER) im Bereich Informationssicherheit festzustellen und zu fördern. Dabei liegt der Hauptfokus auf Bildungsmaterialien für die Hochschullehre. Um dieses Ziel zu erreichen, wird eine analytische Bestandsaufnahme der aktuellen Quellenlage von Materialien der Informationssicherheit durchgeführt. Die Ergebnisse werden in einer Datenbank festgehalten und theoretisch ausgewertet. Dies zeigt, dass aktuell nur wenige OER im Bereich Informationssicherheit verfügbar sind. Es stehen jedoch vielseitige Ausgangsmaterialien zur Verfügung. Um diese verarbeiten zu können, wird ein Handbuch für OER-Ersteller erarbeitet. Dieses bietet didaktische und lizenzrechtliche Hinweise für die OER-Erstellung. Als Beispiel zur Umsetzung dient das erstellte OER "Risikomanagement in der Informationssicherheit - Risikoidentifikation". Abschließend evaluiert diese Arbeit in theoretischer Form eine Möglichkeit, studentische Arbeiten unter einer freien Lizenz zu veröffentlichen.
This thesis aims to provide a comprehensive and systematic analysis about the growing popularity of Korean pop music (K-pop) worldwide in recent years. On one hand, the international expansion of K-pop can be understood as a result of the strategic planning and business execution that are created and carried out by the entertainment agencies. On the other hand, external circumstances such as the rise of social media also create a wide array of opportunities for K-pop to broaden its global appeal. The research explores the ways how the interplay between external circumstances and organizational strategies has jointly contributed to the global circulation of K-pop. The research starts with providing a general descriptive overview of K-pop. Following that, quantitative methods are applied to measure and assess the international recognition and global spread of K-pop. Next, a systematic approach is used to identify and analyze factors and forces that have important influences and implications on K-pop’s globalization. The analysis is carried out based on three levels of business environment which are macro, operating, and internal level. PEST analysis is applied to identify critical macro-environmental factors including political, economic, socio-cultural, and technological. On the industrial level, major forces that shape the music industry in which K-pop’s business operates are evaluated based on the framework of Porter’s Five Forces. External environmental analysis is followed by the review of the global strategies of major Korean entertainment companies in achieving their organizational objective of turning K-pop into a successful global business. We identify all the key value-creating activities ranging from talent acquisition to customer relationship management in the value chain of K-pop’s industry, and analyze how each of these activities have contributed to K-pop’s success in the global market. In conclusion, the recent success of K-pop on the global stage can be understood as the rewards for the capability of its internal strategy to anticipate and capitalize new opportunities in external environment.
Today the author bought six jackets. A friend asked her if she needed six jackets, and if she had this money to pay to all of them. She said that she had only 35 euros and among those six jackets, she will (because they haven’t arrived yet) choose only one. The others five will be returned, because she has this option for free. Then, a friend of her asked: “But what are you doing?!” She answered: “Shopping. I am shopping and writing my thesis.” With pleasure, the author brings to this abstract a concept of brick-and-algo. Pure algorithm – pretty new – any barrier, (brick, the store itself). Experience that brings to the costumer the same feeling as shopping!
Concrete walls also refers to the corporate world, which “bricks” have become glass or simply partitions between one table and another in business in general. The bricks really have fallen apart and companies are going toward a horizontal way, where everybody talks to everybody; again without any brick or any barrier. The hierarchy exists, but in a different level as before. The physical point card became virtual badge, enabling the famous “home office”. Employees began to be evaluated and separated between generations, such as generation X and generation Y or Z (starting in corporations). Consumers have more rights about products and the economy and changing behaviors frantically.
With competitiveness, organizations rely on investing in strategies, assuming new responsibilities, performance necessary for the personal fulfillment of goals and objectives. Promoting the growth and development of its employees, through a model based on mission and values. The quests for survival of organizations have changed the organizational paradigms, in the sense that if before it was necessary to motivate the employees and that today need also to get their commitment. This makes companies to wake up to importance of positive environments, where employees can find favorable conditions to work more effectively.
With globalization and rapid growth of corporations via innovations, talent retention becomes a very important factor for the survival and growth of organizations. At present, the people of organizations must have the ability to manage competently, in order to satisfy and retain their employees, which represent values invaluable to the company. One of those values is the power to renew, create, innovating and to intrapreneur.
Stimulate the entrepreneurial capacity, then by inducing behaviors favorable to systematic innovation, by creating a dynamic of continuous improvement and speed up the process of modernization is a current world. In this sense, the author of the thesis, decided to already introduce innovation, even in the abstract, through another author, or more than an author, a poet and brilliant mind, Fernando Pessoa, when he said:
"There is a time when humans should abandon the used clothes, which already have the shape of their bodies, and forget their paths, which always leads to the same places. It is the time of looking forward: and, if humans don't dare to do it, they will have been, forever, on the sidelines of themselves. " (Fernando Pessoa)
In this context, this thesis proposes to treat about entrepreneurship in general, proposes to talk about intrapreneurship, about corporations, the individuals; and finally, the author tries to makes suggestions for the current decade.