Diploma Thesis Research Articles

Προσδιορισμός αξίας εταιρίας βάσει ταμειακών ροών: περίπτωση της Coca-Cola Ελληνικής Εταιρίας Εμφιαλώσεως Α.Ε. (Determination of the Value of a Company Based on Cash Flows: The Case of Coca-Cola Hellenic Bottling Company S.A.)

Greek Abstract: Στην eν λόγω διπλωματική eργασία, μe τίτλο «Προσδιορισμός Αξίας Eταιρeίας βάσeι Ταμeιακών Ροών: Πeρίπτωση της Coca-Cola Eλληνικής Eταιρίας Eμφιαλώσeως Α.E.», eπισημαίνω την ανάγκη για τον προσδιορισμό της πραγματικής (eσωτeρικής) αξίας των eταιρeιών. Στη συνέχeια παρουσιάζω και αναλύω τον προσδιορισμό της αξίας των eταιρeιών ως μια διαδικασία αποτίμησης μe πέντe βήματα, σe μια γeνική προσαρμόσιμη μορφή eρeυνητικής έκθeσης αποτίμησης, που χρησιμοποιούν πιστοποιημένοι χρηματοοικονομικοί αναλυτές ώστe να προσδιορίσουν την πραγματική αξία των eταιρeιών (κατά eπέκταση της μeτοχής τους) και να τις βοηθήσουν να μeγιστοποιήσουν την αξία τους. Συγκeκριμένα, στο βήμα eπιλογής του κατάλληλου μοντέλου αποτίμησης, eπιλέγω να αναλύσω και να παρουσιάσω το μοντέλο αποτίμησης βάσeι ταμeιακών ροών που eίναι ένα μοντέλο παρούσας αξίας και βασίζeται στις eλeύθeρeς ταμeιακές ροές σe eπίπeδο eταιρeίας και eξηγώ τους λόγους που το κάνω αυτό. Για την κατανόηση των παραπάνω δίνω μια προσωπική eρeυνητική έκθeση αποτίμησης στην πeρίπτωση της Coca-Cola Eλληνικής Eταιρeίας Eμφιαλώσeως Α.E., που eκπονήθηκe και παρουσιάστηκe προσωπικά από eμένα σe eθνικό eπίπeδο στον διeθνή διαγωνισμό του Ινστιτούτου Πιστοποιημένων Χρηματοοικονομικών Αναλυτών (CFA), eκπροσωπώντας το Πανeπιστήμιο Μακeδονίας, δίνοντας τέλος την κατάλληλη eπeνδυτική σύσταση που αφορά την μeτοχή της. Συνοψίζοντας, καταλήγω στο συμπέρασμα πως η χρήση του μοντέλου αποτίμησης βάσeι ταμeιακών ροών σe συνδυασμό μe άλλα μοντέλα, θeωρeίται συνeχώς όλο και πιο απαραίτητη, καθώς καθορίζeι την eπιτυχία ή την αποτυχία των eπeνδυτικών αποφάσeων που αποφέρουν θeτικές ταμeιακές ροές στην eταιρeία και κατά eπέκταση στους μeτόχους της. English Abstract: In this diploma thesis entitled “Determination of the value of a company based on cash flows: The case of Coca-Cola Hellenic Bottling Company S.A.”, I indicate the need to determine the intrinsic value of the companies. Then, I present and analyze the determination of the value of the companies as a five-step valuation process in a general format of a research report used by certified financial analysts to determine the intrinsic value of the companies (by extension of their stock) helping them maximize their value. Selecting the appropriate valuation model, I choose to analyze and present the cash flow valuation model that is a present value model and is based on the free cash flow at a firm level. In addition, I explain the reasons for doing so. For the sake of understanding the above, I provide a personal valuation report in the case of Coca-Cola Hellenic Bottling Company SA, prepared and presented personally by me at a national level, representing the University Macedonia, in the international competition entitled “CFA Institute Research Challenge” hosted by Hellenic CFA Society, ending the appropriate investment recommendation for its stock. To summarize, I conclude that the use of the cash flow valuation model in combination with other models is seen to be increasingly necessary as it determines the success or failure of investment decisions that generate positive cash flows in the company and thus to its shareholders.

Fatigue–Strength Surface: basis for structural analysis under dynamic loads

The relation between fatigue strength and number of load cycles to failure is usually represented by Wohler curves. The four-parametric Weibull function shows a good relation between the static and dynamic strength in the low- and high-cycle fatigue range for a constant stress ratio R (minimum stress/maximum stress) (see Jarosch and Stepan in Fatigue properties and test procedures of glass reinforced plastic rotorblades. American Helicopter Society, 25th Annual National Forum, Paper No. 370, 1969; Och in Fatigue strength, AGARDograph No. 292, helicopter fatigue design guide, 1983; Bansemir and Emmerling in Fatigue substantiation and damage tolerance evaluation of fiber composite helicopter components, applied vehicle technology panel: applications of damage tolerance principles for improved airworthiness of rotorcraft, Corfu, Greece, 1999). However, in addition to the number of load cycles to the failure, fatigue strength also depends on the stress ratio R as well. In predicting the lifetime of a component, a more proper way for the presentation of fatigue life test data is the Goodman approach. This often used method affords the user to predict lifetime at any stress ratio, but does not represent the real material behaviour fully. The Goodman diagram does not take into account the combined effect of low-cycle fatigue and high-cycle fatigue. One better way to build an accurate relation between the fatigue strength, number of load cycles to failure and the stress ratio is to add the third dimension. The result is a three-dimensional view of the fatigue strength as a function of number of load cycles to failure and stress ratio R. Hence, the mathematical description of the fatigue strength as a kind of a surface function depending on the number of load cycles to the failure and the stress ratio is of high interest and indeed the focus of this study. The surface function represents the real material behaviour in low-cycle fatigue range as well as in high-cycle fatigue range more accurate compared to basic Goodman approach. For the determination of the Fatigue–Strength Surface, a so-called F–S Surface, test points with different stress ratios are necessary. The surface function can be adapted to the test points using a nonlinear regression analysis based on least square method. Therefore, it is advisable to use either the three-dimensional Weibull function or a surface function which consists of Tschebyscheff Polynomials. To enhance the regular two-dimensional Weibull function to a three-dimensional model, the four Weibull parameters are described as functions of the stress ratio. This method can be used to analyse the material behaviour based on the results of coupon or component tests. In case of coupon tests, this method is applied and validated as described in the paper. Furthermore, the use of material F–S Surface is compared with Goodman approach. For this purpose, mean surfaces of coupon test specimens with a survival probability of 50% are used. Especially in high-cycle fatigue range and for the stress ratios greater than zero, Goodman approach shows a slight deviation from the actual fatigue strength. In order to consider such effects, lifetime calculations are performed in Eurocopter Deutschland GmbH by using the reduced, so-called working S–N curves which are based on component test results. It has been found that the F–S Surface tends to describe the real fatigue strength in a more accurate way. This may lead to a longer lifetime of components and the possibility to extend the margins of components. This paper is developed from the Diploma thesis “Prediction of the dynamic strength behaviour of structural elements based on S–N–R surfaces created by nonlinear regression analysis of experimental data” (see Weinert in Prediction of the dynamic strength behaviour of structural elements based on S–N–R-surfaces created by nonlinear regression analysis of experimental data Technische Universitat Dresden 2011).

4th Joint Annual Meeting of SETAC GLB and GDCh-Working Group "Environmental Chemistry and Ecotoxicology" held under the main theme "From insight to decision (making)" from 6th to 9th September 2010 in Dessau-Rosslau

This report provides a brief review of the fourth joint meeting of the German Language Branch of Society of Toxicology and Chemistry (SETAC GLB) and the Working Group Environmental Chemistry and Ecotoxicology of the German Chemical Society (GDCh) held from 6th to 9th of September 2010 at the Federal Environment Agency (UBA) in Dessau-Rosslau (Germany). For the first time a governmental institution was responsible for the local organization, a novelty that was expressed in the meeting's main theme From insight to decision (making). 366 participants discussed 105 oral and 125 poster presentations and three invited key speakers from government, academia and industry. The best oral and poster presentations of the meeting were awarded. Moreover, the annual young scientist award of SETAC GLB for the best diploma and doctoral thesis and the best publication award of the GDCh-Working Group Environmental Chemistry and Ecotoxicology were officially handed over. The reader of the meeting (mostly in German language) including the meeting program and all abstracts is for free available via: http://www.setac-glb.de

Chern classes of tropical vector bundles

We introduce tropical vector bundles, morphisms and rational sections of these bundles and define the pull-back of a tropical vector bundle and of a rational section along a morphism. Most of the definitions presented here for tropical vector bundles will be contained in Torchiani, C., Line Bundles on Tropical Varieties, Diploma thesis, Technische Universitat Kaiserslautern, Kaiserslautern, 2010, for the case of line bundles. Afterwards we use the bounded rational sections of a tropical vector bundle to define the Chern classes of this bundle and prove some basic properties of Chern classes. Finally we give a complete classification of all vector bundles on an elliptic curve up to isomorphisms.

Review: Clearings in a Concrete Jungle

Clearings in a Concrete Jungle . Television documentary by the Street Farmers (Peter Crump, Bruce Haggart, and Grahame Caine), first aired 18 June 1973 on BBC 2 (BFI archives, British Film Institute, London) Most revolutions start from the streets. The one, however, called for by the British anarchist, activist architectural group Street Farmers in their 1973 documentary Clearings in a Concrete Jungle , did not begin in the streets nor in public demonstration, but from the inner city: the interior of the urban fabric.1 To battle what the documentary diagnosed as the “highly structured detritus of metropolitan imagination,” the social and political revolution should start from the house and the way of inhabiting the land. The TV program envisioned a change of the city as a whole, achieved through tactical changes in small pieces—islands of habitation taken “off the grid” of energy supply. The main theme of the documentary was one of the earliest ecological houses, the Eco-House, or Street Farmhouse, built in 1972 as a laboratory and living experiment by Grahame Caine, a member of the Street Farmers, which was originally formed by Peter Crump and Bruce Haggart. The Eco-House was a fully functional, integrated system that converted human waste to methane for cooking, as well as included a hydroponic greenhouse that produced radishes, tomatoes, and even bananas. Caine, then a twenty-six-year-old fourth-year student at the Architectural Association of London, designed and built the house on land borrowed from Thames Polytechnic in Eltham, South London, as part of his diploma thesis at the AA. He received a provisional two-year permit from the borough of Woolwich district surveyor with the promise to build an “inhabitable housing laboratory” that would grow vegetables out of household effluents and fertilize the land with reprocessed organic waste. With the help of the Street Farmers, Caine was able to start construction in September 1972, during his fifth year, and to inhabit the house by Christmas. After having lived in the house for two years with his family, …

German Conference on Chemoinformatics 2010 – organizers' notes

The Chemistry-Information-Computers (CIC) division [1] of the German Chemical Society (GDCh) invited the chemoinformatics and modeling community from the 7th to the 9th November 2010 to Goslar, Germany, to participate in the 6th German Conference on Chemoinformatics (GCC 2010). The international symposium addressed a broad range of modern research topics in the realm of computers and chemistry. The conference focused on recent developments and trends in the fields of • Chemoinformatics and Drug Discovery • Chemical Information, Patents and Databases • Molecular Modeling • Computational Material Science and Nanotechnology In addition, contributions from other research areas of Computational Chemistry were welcome. Similar to other conferences in the Life Science sector the German Conference on Chemoinformatics was faced with a decreasing number of participants in 2010. This is assumed to be mainly caused by travel cost cuts in industry due to the global economic crisis. Nevertheless, a large number of scientists (156 participants, Figure ​Figure1)1) from 18 nations were attracted by the excellent scientific program established by the scientific advisory board and attended the GCC 2010. The large number of attendees from countries other than Germany demonstrates that the conference is an internationally well-established event in the global Chemoinformatics and Modelling community (see Figure ​Figure2A).2A). Despite the travel situation in industry, a good ratio between academic institutes, industry and exhibitors could be achieved (see Figure ​Figure2B2B). Figure 1 Participants of the 6. German Conference on Chemoinformatics, November 7–9, 2010, Goslar, Germany. Figure 2 A) 156 participants from 18 nations attended the GCC2010. Most participants (99) were from Germany followed by 16 attendees from the United Kingdom. Participants from the USA and Switzerland followed on the third position with 6 attendees each. B) 56% ... Traditionally, the conference was opened by a “Free-Software-Session” on Sunday afternoon right before the official conference opening at 5 pm. Six Open Source projects were presented in “Free-Software-Session”. This was the largest number of contributions to this session in the history of the GCC. The audience followed presentations of PostgreSQL (Bayer Business Services), OCHEM (Helmholtz Zentrum Munchen), Knime (University of Konstanz), Indigo & Ketcher (SciTouch), and MosGrid (MosGrid Consortium). The “Chemoinformatics Market Place” took place at the same time and included software tutorials by the Chemical Computing Group (“New Features of MOE 2010”) and BioSolveIT (“Fragment-Based Lead Design in Teams”). The scientific program started with an entertaining and enthralling evening lecture giving by Colleen Fitzpatrick (“Hand in Snow”). In addition, the program of the following two days included plenary lectures of six well known invited speakers from industry and academia (Wolfgang Guba, Roche, Swiss; Andrew R. Leach, GSK, UK; Hans Fraaije, Leiden University, The Netherlands; Jurgen Gmehling, Oldenburg University, Germany; Gerhard Klebe, Marburg University, Germany; Holger Gohlke, Dusseldorf University, Germany), 17 lectures as well as 43 poster presentations. Besides the scientific program a special highlight of the conference were the awards (see Figure ​Figure3).3). In contrast to the last GCC in 2009, two different awards could be handed over for excellent scientific work this year. Prof. Jurgen Gmehling from the University of Oldenburg was presented with the Gmelin-Beilstein-Denkmunze [2] award for his groundbreaking contributions in the field of compound databases and fragment methods for the prediction of chemical properties used in technical chemistry. The laudatory speech was given by Prof. Onken and the award was handed over by the president of the German Chemical Society Prof. Michael Droscher. Furthermore, the FIZ-CHEMIE-Berlin awards [3] took place on Monday afternoon. The CIC division awards this price each year to the best diploma thesis and the best PhD thesis in the field of Computational Chemistry. The price for the PhD thesis was awarded to Dr. Simone Fulle from the group of Prof. Dr. Holger Gohlke, Goethe University of Frankfurt for her dissertation “Constraint counting on RNA and ribosomal structures: Linking flexibility and function”. The award for the best diploma thesis was given to Karen Schomburg from the group of Prof. Matthias Rarey, University of Hamburg for her excellent master thesis with the title “Visualization of molecular subgraph pattern using the example of SMARTS pattern”. Figure 3 FIZ CHEMIE Berlin Awards 2010 and GDCh Gmelin-Beilstein-Denkmunze Award: from left to right, Frank Oellien (Chair of the GDCh-CIC division), Ulfert Onken (Laudatory Gmelin-Beilstein-Denkmunze Award), Karen Schomburg (FIZ CHEMIE Berlin ...

Experimental verification of the linear and non-linear versions of a panel code

In the proposed paper numerical calculations are carried out using two versions of a three-dimensional, timedomain panel method developed by the group of Prof. P. Sclavounos at MIT, i.e. the linear code SWAN2, enabling optionally the use of the instantaneous non-linear Froude-Krylov and hydrostatic forces and the fully non-linear SWAN4. The analytical results are compared with experimental results for three hull forms with increasing geometrical complexity, the Series 60, a reefer vessel with stern bulb and a modern fast ROPAX hull form with hollow bottom in the stern region. The details of the geometrical modeling of the hull forms are discussed. In addition, since SWAN4 does not support transom sterns, only the two versions of SWAN2 were evaluated over experimental results for the parent hull form of the NTUA double-chine, wide-transom, high-speed monohull series. The effect of speed on the numerical predictions was investigated. It is concluded that both versions of SWAN2 the linear and the one with the non-linear Froude-Krylov and hydrostatic forces provide a more robust tool for prediction of the dynamic response of the vessels than the non-linear SWAN4 code. In general, their results are close to what was expected on the basis of experience. Furthermore, the use of the option of non-linear Froude-Krylov and hydrostatic forces is beneficial for the accuracy of the predictions. The content of the paper is based on the Diploma thesis of the second author, supervised by the first one and further refined by the third one.

Experimental verification of the linear and non-linear versions of a panel code

In the proposed paper numerical calculations are carried out using two versions of a three-dimensional, time-domain panel method developed by the group of Prof. P. Sclavounos at MIT, i.e. the linear code SWAN2, enabling optionally the use of the instantaneous non-linear Froude-Krylov and hydrostatic forces and the fully non-linear SWAN4. The analytical results are compared with experimental results for three hull forms with increasing geometrical complexity, the Series 60, a reefer vessel with stern bulb and a modern fast ROPAX hull form with hollow bottom in the stern region. The details of the geometrical modeling of the hull forms are discussed. In addition, since SWAN4 does not support transom sterns, only the two versions of SWAN2 were evaluated over experimental results for the parent hull form of the NTUA double-chine, wide-transom, high-speed monohull series. The effect of speed on the numerical predictions was investigated. It is concluded that both versions of SWAN2 the linear and the one with the non-linear Froude-Krylov and hydrostatic forces provide a more robust tool for prediction of the dynamic response of the vessels than the non-linear SWAN4 code. In general, their results are close to what was expected on the basis of experience. Furthermore, the use of the option of non-linear Froude-Krylov and hydrostatic forces is beneficial for the accuracy of the predictions. The content of the paper is based on the Diploma thesis of the second author, supervised by the first one and further refined by the third one.

Gewichtsentwicklung und Körperkondition beim Milchvieh visuell und technisch erfassen

Dairy farmers know the strong influence of an ideal body condition on the first 100 days of lactation. Just through an optimal body condition the period of a negative energy balance can be as short as possible. The question is which opportunities are provided to the farmer to score the body condition of the cows. Therefore it was the aim of a diploma thesis to evaluate the techniques of automated body weight measurement, of body condition scoring and of back fat thickness (BFT) measurement on the dairy herd of the research farm Frankenforst.

This Special Issue of Microsystem Technologies is devoted to Professor Dr.-Ing. Jürgen Haußelt on the occasion of his 65th birthday

Professor Dr.-Ing. Jurgen Hauselt, for many years the Head of the Institute of Materials Research III at the Forschungszentrum Karlsruhe, today Karlsruhe Institute of Technology (KIT), and also Professor and Head of the Laboratory of Materials Process Technology at the University of Freiburg will be celebrating his 65th birthday on May 21, 2011. His outstanding professional career features about 16 years of work in industry and 24 years in science and teaching at academic and research institutions. Jurgen Hauselt studied physics at the University of Erlangen-Nurnberg in Bavaria, Germany, and finished his diploma thesis in 1971. Under the guidance of the Professors Bernhard Ilschner and Wolfgang Blum at the Institute of Materials Science of the university he accomplished a PhD thesis on the recovery of the dislocation structure after stationary deformation with an Al-Zn alloy. After being awarded his doctoral degree (Dr.-Ing.) in 1975, he worked as a scientific assistant at this institute and during this time he took a year-long sabbatical for a postdoc position with Prof. W.D. Nix at Stanford University, USA. Back from the USA, Jurgen Hauselt started his industrial career in July 1977 as group leader in the Metal Research Department of Degussa AG at Hanau-Wolfgang, Germany. At the beginning he worked on the development of new alloys for dental and brazing technologies. In 1983 he became the Technical Director of Degussa Dental, Inc. at Long Island City, USA. As consequence of his remarkable success, he was promoted in November 1984 to the position of the division manager ‘Metallurgy’ at Degussa-Metal Research at Hanau-Wolfgang. The next steps of his career at Degussa had been appointments to a department head in 1987 connected with an enlargement of responsibilities for electronic materials, thin film materials and structural ceramics and in 1989 to the department director ‘‘Manufacturing Technology’’ with responsibility for the Central Research ‘‘Metal’’ which included melting and casting techniques as well as metal forming and powder metallurgy. A new phase of Jurgen Hauselt’s life began on October 1, 1993 with the acceptance of the position of Head of the Institute of Materials Research III at the Kernforschungszentrum Karlsruhe which was renamed Forschungszentrum Karlsruhe in 1995. In 1996 he was additionally appointed Professor and Head of the Laboratory of Materials Process Technology at the Department of Microsystems Engineering (IMTEK) at the University of Freiburg. Promoted by the two appointments of Jurgen Hauselt, a close scientific and personal cooperation of both institutions has developed in the field of Microsystems Technology, particularly. Credit is due to him also for his considerable contribution as vice-spokesman to the formation of the DFG-Collaborative Research Centre 499 ‘‘Design, production and quality assurance of moulded microcomponents made of metallic and ceramic materials’’. By reason of his outstanding scientific competence in several fields of materials science and process technologies for microsystems but also due to his charismatic and engaging personality, his membership in numerous executive and scientific committees has been very much appreciated. Beside his manifold activities in the science community and as a university professor, Jurgen Hauselt K.-H. Zum Gahr (&) Karlsruhe Institute of Technology, Karlsruhe, Germany e-mail: karl-heinz.zumgahr@kit.edu

Manfred Kayser

Manfred Kayser

Obituary: Herbert Schumann 1935–2010

Obituary: Herbert Schumann 1935–2010

5th German Conference on Chemoinformatics: 23. CIC-Workshop. November 8-10, 2009, Goslar, Germany

From the 8th to the 10th November 2009, the Chemistry-Information-Computers (CIC) division of the German Chemical Society (GDCh) has invited the chemoinformatics and modeling community to Goslar, Germany to participate in the 5th German Conference on (GCC 2009). The international symposium addressed a broad range of modern research topics in the field of computers and chemistry. The focus was on recent developments and trends in the fields of and Drug Discovery, Chemical Information, Patents and Databases, Molecular Modeling, Computational Material Science and Nanotechnology. In addition, other contributions from the field of Computational Chemistry were welcome. The conference was opened traditionally with a Free-Software-Session on Sunday afternoon right before the official conference opening at 5 pm including three talks about the Open Source projects Bingo, Dingo and OrChem. In parallel the Chemoinformatics Market Place took place including software tutorials by Chemical Computing Group, Hemlholtz-Center Munich and the Cambridge Crystallograhic Data Center. The scientific program was opened by an evening talk giving an overview on the field of Systems Chemistry (Gunter von Kiedrowski). In addition, the program included six plenary lectures (Eberhard Voit (USA), Knut Baumann (Germany), Thomas Kostka (Germany), Anthony J. Williams (USA), Kalr-Heinz Baringhaus (Germany), Christoph Sotriffer (Germany)], 17 general lectures as well as 54 poster presentations. Besides the scientific program a special highlight of the conference were the FIZ-CHEMIE-Berlin 2009 awards on Monday afternoon (Figure ​(Figure1).1). The CIC division awards this price each year to the best diploma thesis and the best PhD in the field of Computational Chemistry. The price for the PhD thesis was awarded to Dr. Jose Batista from the group of Prof. Dr. Jurgen Bajorath, University of Bonn for his dissertation Analysis of Random Fragment Profiles for the Detaction of Structure-Activity Relationships. The award for the best diploma thesis has gone to Frank Tristram from the group of Dr. Wolfgang Wenzel, Karlsruher Institute of Technology with the title Modellierubng der Hauptkettenbeweglichkeit in der rechnergestutzten Medikamentenentwicklung. Figure 1 Fiz CHEMIE Berlin Awards 2009: from left to right, Frank Tristram (award for the best diploma thesis), Rene de Planque (Head of FIZ CHEMIE Verlin), Frank Oellien (Chair of the GDCh-CIC division), Jose Batista (award for the best PhD thesis).

The real quadrangle of type E 6

Abstract Based on the first author's diploma thesis [Kurth, On a real form of E 6 and its related generalized quadrangle, 2000] we use the theories of Lie groups and of Tits buildings in order to describe a Veronese embedding of the real quadrangle of type E 6, i.e., the C 2 sub-building of the complex E 6 building corresponding to the real form E 6(–14) of the semisimple complex Lie group of type E 6.

Glossar Reisezugwagen EN-DE / DE-EN

AbstractThe process of creating a transeuropean interoperable rail network is an everyday challenge, creating new problems due to different track gauges or voltage systems and leading to new technical developments, implementations and comfort improvements for passengers. Translators and interpreters are faced with various problems: terms and definitions vary between companies and synonyms are not recognised. Furthermore, there is still a lack of mono- and bilingual handbooks, which cover all the aspects and technical components of passenger trains and multiple units. The following glossary is part of a terminological diploma thesis on passenger trains written at the University of Leipzig.

Approach and landing procedures for airports 'Nikola Tesla' and 'Batajnica' using RNP AR APCH and Baro-VNAV

Introduction Numerous advantages of Performance-Based Navigation should be applied in reorganizing the terminal airspace around Belgrade after the opening of 'Batajnica' airport for civil operations. The concept of Performance-Based Navigation Contrary to conventional navigation which relies on navigation signals from ground navaids, PBN is predominantly based upon satellite navigation. RNP - Required Navigation Performance RNP is defined as a set of standards which specify required navigation performance accuracy of an aircraft in certain airspace. Some of its key features are monitoring of actually achieved navigational performances and navigation containment. Benefits and possible issues with RNP implementation Implementation of RNP leads to significant savings in fuel and time, it increases the efficiency of airspace and capacity, reduces ATC workload while on the other hand there are a number of issues that still should be addressed. Barometric Vertical Navigation (Baro-VNAV) The essence of Baro-VNAV is calculation of the vertical component of a 3D flight path that aircraft should follow based on measured static pressure. CDA - Continuous Descent Approach By CDA, approach is flown with a constant gradient at minimal thrust instead of alternating descent and level flight with increased thrust as it is flown in a conventional approach. The airports Both of the airports have their own TMA, but currently there are conventional SID and STAR flows for 'Nikola Tesla' running through TMA 'Batajnica' while procedures for 'Batajnica' are issued only as temporary for special flights. Procedure design A detailed overview of procedure design includes general considerations, the principles on which the design is based, design of turns, maps of inbound flows featuring holdings and missed approach segments. Holdings All holdings, including both in approach and in missed approach for both airports are defined in accordance with RNP holding criteria and in a way that aircraft inbound from as many as possible flows could use them. Final approaches All final approaches consist of a single TF leg (Track to Fix). Containment areas are linear and all their elements are determined by RNP 0.3. Baro-VNAV is used for vertical guidance. Missed approach segments with MAP holdings In design of missed approach segment only TF legs were used for a straight flight and RF legs for turns. The priority was minimization of total complexity in the segment which is why the minimal number of legs was used and turn amplitude was limited. Conclusion Implementation of RNP AR APCH in combination with Baro- VNAV and CDA at 'Nikola Tesla' and 'Batajnica' would bring many benefits without any observed negative side effects. Note The topic is addressed with far more details in diploma thesis of Vojislav Milosavljević, originally titled 'Procedure za prilaz i sletanje na aerodrome 'Nikola Tesla' i 'Batajnica' primenom RNP AR APCH i Baro-VNAV' defended at The Faculty of Traffic and Transport Engineering, Belgrade, Serbia, on July, 7th 2008. Detailed calculations, figures, explanations of chosen solutions and other are featured in the thesis available at the library of the faculty. .

4th German Conference on Chemoinformatics: 22. CIC-Workshop. November 9–11, 2008, Goslar, Germany

From the 9th to the 11th November 2008, the Chemistry-Information-Computers (CIC) division of the German Chemical Society (GDCh) has invited the chemoinformatics and modeling community to Goslar, Germany to participate in the 4th German Conference on (GCC). Almost 200 participants from 14 countries accepted the invitation making the event again one of the largest chemoinformatics conferences in Europe. The international symposium addressed a broad range of modern research topics in the field of computers and chemistry. The focus was on recent developments and trends in the fields of and Drug Development, Chemical Information, Molecular Modeling, Computational Material Science and Nanotechnology. In addition, other contributions from the field of Computational Chemistry were welcome. The scientific program included one evening lecture [K. Varmuza(Austria)], six plenary lectures [J. Bajorath (Germany), M.R. Berthold (Germany), R. Herges (Germany), S.M. Bachrach (USA), R. C. Glen (UK), M. Elstner (Germany)], 16 general lectures as well as 77 poster presentations. Traditionally, the conference started with a Free-Software-Session and the Chemoinformatics Market Place on Sunday afternoon right before the official conference opening at 5 pm. Numerous Open Source projects from the field of have been presented within the Free-Software-Session in the large lecture hall at the conference hotel 'Der Achtermann in Goslar. In addition two software tutorials have been provided in parallel within the scope of the Chemoinformatics Market Place: One software tutorial was provided by Xemistry GmbH covering some key technologies of their CACTVS application. In the second tutorial Chemical Computing Group offered insights into the new release of MOE. After the official opening at 5 pm and a short introduction of the 10 exhibitors the first day ended with a conference dinner and the evening lecture of Kurt Varmuza on Classification and Characterization of Materials – from Archaeometry to Comets. Besides the scientific program a special highlight of the conference was the FIZ-CHEMIE-Berlin 2008 awards on Monday afternoon. The CIC division awards this price each year to the best diploma thesis and the best PhD in the field of Computational Chemistry. The PhD price was awarded to Dr. Oliver Korb from the group of Prof. Dr. Thomas Exner, Konstanz for his dissertation Efficient Ant Colony Optimization Algorithms for Structure- and Ligand-based Drug Design. The award for the best diploma thesis has gone to Andreas Jahn from the group of Prof. Dr. Andreas Zell, Tubingen with the title Die Erweiterung des Optimal Assignment Kernel (OAK) um konformationelle Flexibilitat. Finally, after 4 years the old GDCh-CIC division board handed over the divisions concerns to the new elected board members during the conference. The success of the German Conference on is definitely a credit to the old CIC board and we want to thank the retired board members Christoph Steinbeck, Gregor Fels and Rainer Herges for their work and engagement. Pictures of the conference are available on the GDCh webserver: http://www.gdch.de/strukturen/fg/cic/tagungen/gcc_2008.htm

A tribute to Rolf Neeb (1929–2006) on the 80th anniversary of his birth

The year 2009 marks the 80th anniversary of the birth of the eminent German analytical chemist Rolf Neeb (Fig. 1). Sadly, Rolf Neeb passed away 3 years ago; however, the 80th anniversary of his birth is an appropriate occasion to remember his many scientific achievements, especially his contributions to electroanalytical chemistry. Rolf Neeb was born on January 7, 1929, in Mainz, the only child of the merchant Arthur Neeb and his wife Anna, nee Lerch. In Mainz he went to the Leibnitz-Volksschule from 1935 to 1939, and then until 1945 to the GutenbergOberrealschule. The war forced the Neeb family to leave Mainz and to settle temporarily in the village of Nierstein. However, Rolf Neeb was able to attend the Gymnasium (grammar school) in the nearby town of Oppenheim, and left with his Abitur (German school-leaving certificate) in 1948. In the same year he began to study chemistry at the reopened Johannes Gutenberg University in Mainz, where his teachers were W. Geilmann, F. Strassmann, T. Wieland, L. Horner, and G.V. Schulz. Neeb was a student with very wide interests, and even started to learn Arabic (personal information from T. Steudel). He finished his studies with a diploma, which was achieved under the guidance of the well-known analytical chemist Wilhelm Geilmann (May 16, 1891 to May 24, 1967) [1, 2]. Geilmann had been taught by Otto Wallach, Gustav Tammann, Richard Zsigmondy [3], and Carl Mannich [4, 5], and Mannich had supervised Geilmann’s PhD work in Hannover. Thus, one can trace Rolf Neeb’s scientific genealogy back in a straight line to the great Johann Wolfgang Dobereiner [6], who was largely self-taught (see Fig. 2). The German writer and poet Johann Wolfgang von Goethe frequently consulted Dobereiner on chemical issues, and he strongly supported his work at Jena [7]. Rolf Neeb’s diploma thesis (1954) concerned the separation of zinc from complex matrices. To achieve this he used a stream of hydrogen gas to reductively evaporate zinc metal—together with other reducible metals—and deposit them onto the cold parts of a quartz capillary. From there it was comparatively straightforward to dissolve the zinc in acid, and then determine the concentration using spectrophotometry or polarography [8, 9]. This was an early example of his scientific creativity, since we know that it was Neeb’s idea to develop such a method, not that of his supervisor (personal information from T. Steudel). Neeb stayed in Geilmann’s group and completed his PhD Anal Bioanal Chem (2009) 395:1571–1573 DOI 10.1007/s00216-009-2801-1

Analysis of driver behaviour for presentation of adaptive implementation strategies of assistance systems

Assistance systems, whose intervention strategies are based on average expected values, give away potential both in terms of driving safety as well as the expected user acceptance, since they neither meet the expectations nor the support needs of all drivers. One approach to comply with the intra- and inter-individual differences in driver behaviour is the analysis of the driving style and the derivation of situation and driver-oriented assistance. At the Department of Automotive Engineering at the Berlin Institute of Technology an approach was developed that shows the potential of driver-adaptive support using a brake assist system as example. The diploma thesis to this topic won the German award “Hermann Appel Preis 2007”, which is powered by the IAV GmbH.

Planar Polyline Drawings via Graph Transformations

We study the problem of transforming plane triangulations into irreducible triangulations, which are plane graphs with a quadrangular exterior face, triangular interior faces and no separating triangles. Our linear time transformation reveals important relations between the minimum Schnyder’s realizers of plane triangulations (Bonichon et al., Proceedings of the 20th Annual Symposium on Theoretical Aspects of Computer Science, Lecture Notes in Computer Science, vol. 2607, pp. 499–510, Springer, Berlin, 2003; Research Report RR-1279-02, LaBRI, University of Bordeaux, France; Brehm, Diploma thesis, FB Mathematik und Informatik, Freie Universitat Berlin, 2000) and the transversal structures of irreducible triangulations (Fusy, Proceedings of 13th International Symposium on Graph Drawing, Lecture Notes in Computer Science, vol. 3843, pp. 177–188, Springer, Berlin, 2005; He, SIAM J. Comput. 22:1218–1226, 1993). The transformation morphs a 3-connected plane graph into an internally 4-connected plane graph. Therefore some of the graph algorithms designed specifically for 4-connected plane graphs can be applied to 3-connected plane graphs indirectly. As an example of such applications, we present a linear time algorithm that produces a planar polyline drawing for a plane graph with n vertices in a grid of size bounded by W×H, where $W\leq\lfloor\frac{2n-2}{3}\rfloor$, and $W+H\leq\lfloor \frac{4n-4}{3}\rfloor$. It uses at most $\lfloor\frac{2n-5}{3}\rfloor$bends, and each edge uses at most one bend. Our algorithm is area optimal. Compared with the existing area optimal polyline drawing algorithm proposed in Bonichon et al. (Proceedings of the 28th International Workshop on Graph-Theoretic Concepts in Computer Science, Lecture Notes in Computer Science, vol. 2573, pp. 35–46, Springer, Berlin, 2002), our algorithm uses a smaller number of bends. Their bend bound is (n−2).