Refine
Departments, institutes and facilities
- Präsidium (25)
- Fachbereich Angewandte Naturwissenschaften (19)
- Fachbereich Wirtschaftswissenschaften (16)
- Fachbereich Informatik (14)
- Institut für Technik, Ressourcenschonung und Energieeffizienz (TREE) (10)
- Internationales Zentrum für Nachhaltige Entwicklung (IZNE) (10)
- Institut für funktionale Gen-Analytik (IFGA) (6)
- Fachbereich Ingenieurwissenschaften und Kommunikation (5)
- Institute of Visual Computing (IVC) (5)
- Sprachenzentrum (5)
Document Type
- Part of a Book (28)
- Part of Periodical (26)
- Article (25)
- Conference Object (9)
- Report (5)
- Working Paper (4)
- Book (monograph, edited volume) (2)
- Preprint (2)
- Bachelor Thesis (1)
- Conference Proceedings (1)
Year of publication
- 2018 (103) (remove)
Has Fulltext
- yes (103) (remove)
Keywords
- drug release (3)
- lignin (3)
- Corporate Social Responsibility (2)
- Folin-Ciocalteu assay (2)
- Kenya (2)
- antioxidant activity (2)
- biomass (2)
- biomaterial (2)
- bone regeneration (2)
- hydrogel (2)
From September 2016 to February 2017, I did an internship at the University of Cape Coast, Ghana (UCC) as part of my studies in Business Administration at Hochschule Bonn-Rhein-Sieg, University of Applied Sciences, Germany (H-BRS). At H-BRS, an internship of five or six months (or, alternatively, one exchange semester) is an obligatory part of the curriculum so students get hands-on experience even before they enter the job market. My internship was also part of the intercontinental partnership between UCC and H-BRS, which has resulted in many different projects.
I had an opportunity to visit Germany in 2016/2017 during which period I was on an exchange staff program between the University of Nairobi, Hochschule Bonn-Rhein-Sieg, University of Applied Sciences, Germany, and the University of Cape Coast, Ghana. My visit took me to the city of Bonn where the University of Bonn-Rhein-Sieg is located in the suburban area in the cities of Sankt Augustin, Rheinbach, and Hennef. I was able to interact with faculty members and students. During this period, the discussion I had with faculty mainly focused on various programs offered by the university and how they have been able to interact and partner with the industry and create linkages with various firms in Germany. It emerged from our discussion that the development of the curriculum by the university depends on such partnerships.
Culture is the constellation of shared believes, mores, values, and traditions that define the behavior of people and it is unique to each community at local and national levels. Culture determines the languages spoken by the people, their attitude towards others, and their behavior. While the family is the immediate point through which culture is learned by children, socialization at institutions such as religious organizations, places of worship, schools, and the society’s dispute resolution system reinforce culture. Unlike the Internet, traditional media in the forms of local and national print and audio-visual content tend to reinforce cultural beliefs, values, and practices of specific communities. The uniqueness of culture creates market penetration challenges to entrepreneurs in international markets. Therefore, intercultural communication is a necessary skill for reducing cultural liability and increasing the success of entrepreneurial ventures.
The exchange program enables students to travel from their home countries to a partner university in the German-African University project. Students from the University of Nairobi in Kenya and University of Cape Coast in Ghana travel to the Hochschule Bonn-Rhein-Sieg University of Applied Sciences and stay for three months attending classes and participating in academic activities together with German students. Similarly, students from Hochschule Bonn-Rhein-Sieg, University of Applied Sciences, travel to either West or East Africa and are hosted for three months by universities participating in the project. The program enables Kenyan students to accustom themselves to the German way of life and student-centered learning and disciplines. The program integrates fieldwork into the learning activities making education both a skill-imparting and fun process.
The exchange program was aimed at giving students an international exposure through teaching and intercultural communication and to also enhance the existing relationship among the partner schools. The program lasted for a period of six months from September 2016 to February 2017. The main part of the program was the International Management program which comprised of four courses. The program offered us an opportunity to travel to four European countries to broaden our academic and social network.
The nature of the program was an exchange program between Hochschule Bonn-Rhein-Sieg, University of Applied Sciences and the University of Cape Coast. The program was advertised and we applied. We were shortlisted for interview and we were selected as the candidates for the exchange program. The program took a period of five months. We set off from Accra, Ghana to Germany on 7th September 2015, and returned to Ghana on 25th January 2016.
German African Universities Program (GAUP) is a partnership of three universities encompassing Hochschule Bonn-Rhein-Sieg, University of Applied Sciences in Germany, University of Nairobi in Kenya, and University of Cape Coast in Ghana. Every year, a number of students from each university are competitively selected to take part in the exchange program in a foreign country for three months in the sponsored project. I participated in the exchange program in Germany during the winter semester 2016/2017. The experience was excellent and the benefits cannot be underestimated. The objective was to integrate with the university community in Germany and learn first-hand from their teaching approaches and experiences by attending classes and interacting in- and outside the classroom. It provided an opportunity for cross-cultural learning, hence preparing us to live and work in different parts of the world. Besides the classroom experience, learning was reinforced by exposure tours in the industry including the Coal mine industrial complex in Essen (UNESCO world heritage since 2001) and Rheinbach.
Course Profiles
(2018)
Major progress occurred in understanding inborn errors of ketone body transport and metabolism between the International Congresses on Inborn Errors of Metabolism in Barcelona (2013) and Rio de Janeiro (2017). These conditions impair either ketogenesis (presenting as episodes of hypoketotic hypoglycemia) or ketolysis (presenting as ketoacidotic episodes); for both groups, immediate intravenous glucose administration is the most critical and (mHGGCS, HMGCS2) effective treatment measure.
More and more low-power wide-area networks (LPWANs) are being deployed and planning the gateway locations plays a significant role for the network range, performance and profitability. We choose LoRa as one LPWAN technology and evaluated the accuracy of the Received Signal Strength Indication (RSSI) of different chipsets in a laboratory environment. The results show the chipsets report significantly different RSSI. To estimate the range of a LPWAN beforehand, path loss models have been proposed. Compared to previous work, we evaluated the Longley-Rice Irregular Terrain Model which makes use of real-world elevation data to predict the path loss. To verify the results of that prediction, an extensive measurements campaign in a semi-urban area in Germany has been conducted. The results show that terrain data can increase the prediction accuracy.
Solar energy plants are one of the key options to serve the rising global energy need with low environmental impact. Aerosols reduce global solar radiation due to absorption and scattering and therewith solar energy yields. Depending on the aerosol composition and size distribution they reduce the direct component of the solar radiation and modify the direction of the diffuse component compared to standard atmospheric conditions without aerosols.
Argentina substantially contributes to the global organic agriculture and food sector due to its large areas of organically managed agricultural land. However, most of the organic production is intended for export. Overall, food supply for the domestic organic market is hardly tapped. Based on this, we investigate the current importance of organic agriculture and food production as well as consumption attitudes and behavior within the country. The novelty of the study also lies in the observation, documentation and analysis of latest stakeholder‐driven developments towards organic agriculture and food. Furthermore, the publication allows the Argentinean organic market to be significantly more visible for the international audience.
Quantifying the spectrum occupancy in an outdoor 5 GHz WiFi network with directional antennas
(2018)
WiFi-based Long Distance networks are seen as a promising alternative for bringing broadband connectivity to rural areas. A key factor for the profitability of these networks is using license free bands. This work quantifies the current spectrum occupancy in our testbed, which covers rural and urban areas alike. The data mining is conducted on the same WiFi card and in parallel with an operational network. The presented evaluations reveal tendencies for various aspects: occupancy compared to population density, occupancy fluctuations, (joint)-vacant channels, the mean channel vacant duration, different approaches to model/forecast occupancy, and correlations among related interfaces.
Urban food systems consist of many stakeholders with different perspectives, different interests and different governance tools. This study aimed at developing potential future scenarios for the food system of Cologne by analysing the system with a Delphi approach. In our research-design, the suitability of the Delphi-method was evaluated not only as a tool for future modelling and scenario design, but also as a communication tool among the group of participants on a multi-stakeholder-platform. As a case study, the Food Policy Council of Cologne, Germany was used. Cologne can be seen as a forerunner among German cities in the development of a new urban food policy. Some of the successful steps to re-envisioning food as an urban system include joining the Milan Urban Food Policy Pact, the decision of the City Council to become an edible city and the establishment of a Food Policy Council. For the study it was important to capture participants’ visions of a common goal regarding the governance of the urban food system and also to identify mental ‘silos’. It was obvious that the municipality of Cologne together with the Food Policy Council made great efforts towards participatory processes to build a vision for a sustainable and regional food supply. However, many stakeholder-groups in the process still work exclusively among themselves and do not actively practice the confrontation with the viewpoints of other relevant groups. This supports the maintenance of ‘silos’ and leaves little room for face-to-face discussions. Therefore, the primary aim of this study is to explore key components of food provisioning in the future for Cologne while confronting all stakeholders (municipal administration and politicians, farmers and food activists) with the perspectives of all group members. We used a multi-stakeholder Delphi approach with 19 panellists to find out essential components of the municipal regional food provisioning system in Cologne. Unique in this Delphi study is the bringing together of municipal administration, regional urban farmers and food activists. The research is still on-going, but preliminary results show that more communication among all relevant actors, especially horizontally among different city departments, in the urban food system is needed.
The paper contributes to the debate on the political economy of implementation of propoor social policy. It argues for a broadening of the debate, which is dominated by technocratic arguments, emphasizing the lack of financial resources, technology or skills as the major barriers for effective implementation. Describing the dynamic interplay of ‘formal’ operational programme structures and ‘informal’ traditional institutions in delivering the CT-OVC – the largest and oldest cash transfer programme in Kenya – it argues for the need to look more closely into the local political economy as an important mediating arena for implementing social policies. Implementation is heavily contingent upon the local social, political and institutional context that influences and shapes its outcomes. These processes are highly dynamic and ambivalent evolving between ‘formal’ and ‘informal’ structures and institutions. They may change over time and place, challenging the implicit assumption that programmes are evenly implemented across geographic and political entities.
This paper analyzes the complex effects and risks of social protection programmes in Ghana and Kenya on poor people’s human wellbeing, voice and empowerment and interactions with the social protection regulatory framework and policy instruments. For this purpose, it adopts a comprehensive Inclusive Development framework to systematically explore the complex effects of cash transfers and health insurance at the individual, household and community level. The findings highlight the positive provisionary and preventive effects of social protection, but also illustrate that the poorest are still excluded and that promotive effects, in the form of enhanced productivity, manifest themselves mainly for the people who are less resource poor. They can build more effectively upon an existing asset base, capabilities, power and social relations to counter the exclusionary mechanisms of the system, address inequity concerns and offset the transaction costs of accessing and benefitting from social protection. The inclusive development framework enables to lay these complex effects and interactions bear, and points to areas that require more longitudinal and mixed methodology research.
Um das digitale Storytelling für Medienunternehmen lukrativ nutzbar zu machen, existiert eine zunehmende Zahl von Tools, Software also, die das deutlich weniger zeitaufwendige Produzieren mithilfe zur Verfügung stehender Seitenvorlagen möglich machen. Drei oftmals verwendete Tools zur Produktion als auch zur Veröffentlichung von Beiträgen im digitalen Storytelling sind Atavist, Pageflow und Shorthand. Statt eigenem Programmieren können verschiedene multimediale Elemente in der Regel mit wenigen Mausklicks integriert werden. Nicolas Kaufmann beschäftigt sich in seiner Abschlussarbeit zum Bachelor of Science mit dem Thema "Digitales Storytelling - Eine Untersuchung zu Darstellungsformen, Nutzen und Tools".
Here, we present a miR mechanism which is active in the nucleus and is essential for the production of intron included, C-terminal truncated and biologically active proteins, like e.g. Vim3. We exemplified this mechanism by miRs, miR-15a and miR-498, which are overexpressed in clear cell renal carcinoma or oncocytoma. Both miRs directly interact with DNA in an intronic region, leading to transcriptional stop, and therefore repress the full length version of the pre-mRNA, resulting in intron included truncated proteins (Mxi-2 and Vim3). A computational survey shows that this miR:DNA interactions mechanism may be generally involved in regulating the human transcriptome, with putative interaction sites in intronic regions for over 1000 genes. In this work, an entirely new mechanism is revealed how miRs can repress full length protein translation, resulting in C-terminal truncated proteins.
Bei Thymian (Thymus vulgaris) handelt es sich um eine sehr varietätenreiche Art, die aufgrund ihres Gehaltes an therapeutisch wirksamen Inhaltsstoffen als Arzneipflanze monographiert ist. Insbesondere das ätherische Öl mit dem Hauptbestandteil Thymol (ca. 50%) hat eine hohe antioxidative Wirkung. Ziel ist es, dieses Potential als nachhaltig produzierte Additive zu nutzen. Hierfür eignen sich antioxidativ bzw. antimikrobiell wirksame sowie UV-absorbierende Substanzen, die das Produkt bei Zusatz vor oxidativem Stress, mikrobiellem Abbau und Qualitätsverlust schützen.
Hierzu werden zunächst sechs Varianten auf verschiedene Parameter analysiert, um die potenteste Variante auszuwählen. Auf diese Variante wird sich die weitere Forschung konzentrieren.
Daher wird das ätherische Öl durch azeotrope Destillation extrahiert und mittels GCMS analysiert. In Extrakten werden zudem das AP und Absorptionsverhalten bestimmt. Auch die chemische Zusammensetzung des Extrakts sowie die flüchtigen Stoffe des Thymians werden untersucht. Generell gibt es wenig qualitative, teilweise jedoch quantitative Unterschiede: Eine Variante weist u.a. einen deutlich höheren Thymolgehalt im Öl (ca. 65 %) und ein hohes hydrophiles AP auf. Somit ist eine vielversprechende Variante für die weitere Entwicklung und Optimierung bioaktiver Additive gefunden.