A New DER coordination in LV network based on the concept of distributed control

Given the paradigm of smart grid as the promising backbone for future network, this paper uses this paradigm to propose a new coordination approach for LV network based on distributed control algorithm. This approach divides the LV network into hierarchical communities where each community is controlled by a control agent. Different level of communication has been proposed for this structure to control the network in different operation modes.

The big data upgrade : new dimensions in data analysis - risks and opportunities [das big data upgrade : neue dimensionen der datennutzung – chancen und risiken]

Summary: More than ever before contemporary societies are characterised by the huge amounts of data being transferred. Authorities, companies, academia and other stakeholders refer to Big Data when discussing the importance of large and complex datasets and developing possible solutions for their use. Big Data promises to be the next frontier of innovation for institutions and individuals, yet it also offers possibilities to predict and influence human behaviour with ever-greater precision

Van der Waals-corrected density functional theory : benchmarking for hydrogen–nanotube and nanotube–nanotube interactions

Density functional theory (DFT) is a powerful approach to electronic structure calculations in extended systems, but suffers currently from inadequate incorporation of long-range dispersion, or Van der Waals (VdW) interactions. VdW-corrected DFT is tested for interactions involving molecular hydrogen, graphite, single-walled carbon nanotubes (SWCNTs), and SWCNT bundles. The energy correction, based on an empirical London dispersion term with a damping function at short range, allows a reasonable physisorption energy and equilibrium distance to be obtained for H2 on a model graphite surface. The VdW-corrected DFT calculation for an (8, 8) nanotube bundle reproduces accurately the experimental lattice constant. For H2 inside or outside an (8, 8) SWCNT, we find the binding energies are respectively higher and lower than that on a graphite surface, correctly predicting the well known curvature effect. We conclude that the VdW correction is a very effective method for implementing DFT calculations, allowing a reliable description of both short-range chemical bonding and long-range dispersive interactions. The method will find powerful applications in areas of SWCNT research where empirical potential functions either have not been developed, or do not capture the necessary range of both dispersion and bonding interactions.

Blog research : the 'computational turn' [Blogforschung: Der 'Computational Turn']

ForscherInnen aus Sozial- und Geisteswissenschaften interessieren sich seit nunmehr einem Jahrzehnt für Blogs, Online-Tagebücher und Online-Journale. Auch wenn die Zuwachsrate der Blogosphäre seit der Blütezeit des Bloggens in den 2000ern stagniert, bleiben Blogs doch eines der bedeutendsten Genres der internetgestützten Kommunikation. Tatsächlich ist nach der Massenabwanderung zu Facebook, Twitter und anderen erst in jüngerer Zeit entstandenen Kommunikationsmitteln eine etwas kleinere, aber umso stärker etablierte Blogosphäre von engagierten und eingeschworenen Teilnehmenden übriggeblieben. Blogs werden mittlerweile als Teil einer institutionellen, persönlichen und Gruppen-Kommunikationstrategie akzeptiert. In Stil und Inhalt liegen sie zwischen den statischeren Informationen auf konventionellen Websites und den ständig aktualisierten Facebook- und Twitter-Newsfeeds. Blogs ermöglichen es ihren AutorInnen (und deren KommentatorInnen), bestimmte Themen im Umfang von einigen hundert bis zu einigen tausend Wörtern zu durchdenken, in kürzeren Posts ins Detail zu gehen und ggf. intensiver durchdachte Texte anderswo zu publizieren. Zudem sind sie auch ein sehr flexibles Medium: Bilder, Audio-, Video- sowie andere Materialien können mühelos eingefügt werden - und natürlich auch das grundlegende Instrument des Bloggens: Hyperlinks.

Occupational and non-occupational risk factors in bladder cancer patients in an industrialized area located in former East-Germany [Berufliche und außerberufliche Risikofaktoren für das Harnblasenkarzinom in einem ehemaligen Industriegebiet der neuen Bundesländer]

Purpose: Several occupational carcinogens are metabolized by polymorphic enzymes. The distribution of the polymorphic enzymes N-acetyltransferase 2 (NAT2; substrates: aromatic amines), glutathione S-transferase M1 (GSTM1; substrates: e.g., reactive metabolites of polycyclic aromatic hydrocarbons), and glutathione S-transferase T1 (GSTT1; substrates: small molecules with 1-2 carbon atoms) were investigated. Material and Methods: At the urological department in Lutherstadt Wittenberg, 136 patients with a histologically proven transitional cell cancer of the urinary bladder were investigated for all occupations performed for more than 6 months. Several occupational and non-occupational risk factors were asked. The genotypes of NAT2, GSTM1, and GSTT1 were determined from leucocyte DNA by PCR. Results: Compared to the general population in Middle Europe, the percentage of GSTT1 negative persons (22.1 %) was ordinary; the percentage of slow acetylators (59.6%) was in the upper normal range, while the percentage of GSTM1 negative persons (58.8%) was elevated in the entire group. Shifts in the distribution of the genotypes were observed in subgroups who had been exposed to asbestos (6/6 GSTM1 negative, 5/6 slow acetylators), rubber manufacturing (8/10 GSTM1 negative), and chlorinated solvents (9/15 GSTM1 negative). Conclusions: The overrepresentation of GSTM1 negative bladder cancer patients also in this industrialized area and more pronounced in several occupationally exposed subgroups points to an impact of the GSTM1 negative genotype in bladder carcinogenesis. [Article in German]

Interface of graphane with copper : a van der Waals density-functional study

Various forms of hydrogenated graphene have been produced to date by several groups, while the synthesis of pure graphane has not been achieved yet. The study of the interface between graphane, in all its possible hydrogenation configurations, and catalyst metal surfaces can be pivotal to assess the feasibility of direct CVD growth methods for this material. We investigated the adhesion of graphane to a Cu(111) surface by adopting the vdW-DF2-C09 exchange-correlation functional, which is able to describe dispersion forces. The results are further compared with the PBE and the LDA exchange-correlation functionals. We calculated the most stable geometrical configurations of the slab/graphane interface and evaluated how graphane's geometrical parameters are modified. We show that dispersion forces play an important role in the slab/graphane adhesion. Band structure calculations demonstrated that in the presence of the interaction with copper, the band gap of graphane is not only preserved, but also enlarged, and this increase can be attributed to the electronic charge accumulated at the interface. We calculated a substantial energy barrier at the interface, suggesting that CVD graphane films might act as reliable and stable insulating thin coatings, or also be used to form compound layers in conjunction with metals and semiconductors.

Author's reply to: Ankylosing spondylitis: evidence for a non-HLA-B*27 protective effect, Sjef Van Der Linden, Desieree Van Der Heijde

As mentioned in the letter by van der Linden and van der Heijde, Jurgen Braun’s excellent recent paper describing a survey of blood donors by questionnaire, clinical, and magnetic resonance imaging examinations revealed a prevalence of ankylosing spondylitis in B27 positive blood donors (6.4%)1-1 very similar to that reported by Gran et al(6.7%).1-2 It is probable that some of the differences in reported prevalence of ankylosing spondylitis by the various studies are because of methodological differences.

Die Personennamen und Titel der mittelmongolischen Dokumente : Eine lexikalische Untersuchung

The present research is an investigation into the corpus of personal names and titles that are found in sources from the Middle Mongolian period, that is the time from the 13th to the beginning of the 15th century. The entry for every name or title has been divided into three parts: occurence(s) of a given name in Middle Mongolian sources (primary sources), etymology, and occurence(s) in sources other than Middle Mongolian (secondary sources). Culturally and lingistically the corpus can be divided into six sub-groups: Mongolian, Turkic (Old, Middle and Modern), Arabo-Persian (Islamic), Indo-Iranian and Tibetan (Buddhist), as well as Chinese. Among these, the largest group is formed by Mongolian and Turkic, followed by Chinese (mostly titles), Indo-Iranian, Arabo-Persian and Tibetan. With regard to the primary and secondary occurences the research is based mainly on primary sources including text-publications and dictionaries. Every name or title is documented as completely as possible within a Central Asian framework. However, due to the divergency of the sources available as well as diachronical importance, each sub-group has been dealt with slightly differently, but consistently. The corpus of investigated names and titles gives a fairly correct picture of the multi-ethnical composition of the Mongolian world-empire. It also shows the foreign influences on Mongolian names and titles, being in this respect a mirror of the influences that are visible in other parts of the Middle Mongolian culture too. Furthermore, the investigated corpus reflects the transitory stage of the 13th to 15th century in Central Asian history, and includes thus material from the past (Indo-Iranian, Old and Middle Turkic), and material that points to the future (Arabo-Persian, Tibetan, Modern Turkic).

Die Eigenschaften der Benennungen und ihr Einfluss auf deren Verwendung am Beispiel der Euro-Währung : Eine quantitative und kontrastive Analyse der Terminologie im Finnischen und im Deutschen

This dissertation deals with the terminology of the Euro currency. Its aims are to determine the characteristics of the designations in a certain LSP and to discover whether the recommendations and rules that have been given to the formation of designations and 'ideal' designations have any influence on the usage of the designations. The characteristics analysed include length of the designation, part of speech, form, formation method, constancy, monosemy, suitability to a concept system and degree of specialty. The study analyses the actual usage of the designations in texts and the implementation of the designations. The study is an adaptation of a terminometric survey and uses concept analysis and quantitative analysis as its basic methods. The frequency of each characteristic is measured in terms of statistics. It is assumed that the 'ideality' of a designation influences its usage, for example that if a designation is short, it is used more than its longer rivals (synonyms). The results are analysed in a corpus consisting of a compilation of different texts concerning the Euro. The corpus is divided according to three features: year (1998-2003), genre (judicial texts, annual reports and brochures) and language (Finnish and German). Each analysis is performed according to each of these features and compared with the others. The results indicate that some of the characteristics of the designations indeed seem to have an influence on the usage of the designations. For example, monosemy and suitability to the concept system often lead to the implementation of the designation having the ideal or certain value in these characteristics in the analysed Finnish material. In German material, an 'ideal' value in the characteristics leads to the implementation of the designations more often than in Finnish. The contrastive study indicates that, for example, suitability to a concept system leads to implementation of a designation in judicial texts more often than in other genres. The recommendations given to an 'ideal' designation are thus often acceptable, but they cannot be generalized for all languages in the same extent.

Untersuchungen zur Fachsprache der Ökologie und des Umweltschutzes im Deutschen und Finnischen : Bezeichnungsvarianten unter einem geschichtlichen, lexikographischen, morphologischen und linguistisch-pragmatischen Aspekt

The work integrates research in the language and terminology of various fields with lexicography, etymology, semantics, word formation, and pragmatics. Additionally, examination of German and Finnish provides the work with perspective of contrastive linguistics and the translation of texts in specialized fields. The work is an attempt to chart the language, vocabulary, different textual types, and essential communication-connected features of this special field. The study is primary concerned with internal communication within the field of ecology, but it also provides a comparison of the public discussion of environmental issues in Germany and Finland. The work attempts to use textual signs to provide a picture of the literary communication used on the different vertical levels in the central text types within the field. The dictionaries in the fields of environmental issues and ecology for the individual text types are examined primarily from the perspective of their quantity and diversity. One central point of the work is to clarify and collect all of the dictionaries in the field that have been compiled thus far in which German and/or Finnish ware included. Ecology and environmental protection are closely linked not only to each other but also to many other scientific fields. Consequently, the language of the environmental field has acquired an abundance of influences and vocabulary from the language of the special fields close to it as well as from that of politics and various areas of public administration. The work also demonstrates how the popularization of environmental terminology often leads to semantic distortion. Traditionally, scientific texts have used the smallest number of expressions, the purpose of which is to appeal to or influence the behavior of the text recipient. Particularly in Germany, those who support or oppose measures to protect the environment have long been making concerted efforts to represent their own views in the language that they use. When discussing controversial issues competing designations for the same referent or concept are used in accordance with the interest group to which the speaker belongs. One of the objectives of the study is to sensitize recipients of texts to notice the euphemistic expressions that occur in German and Finnish texts dealing with issues that are sensitive from the standpoint of environmental policy. One particular feature of the field is the wealth and large number of variants designating the same entry or concept. The terminological doublets formed by words of foreign origin and their German or Finnish language equivalents are quite typical of the field. Methods of corpus linguistics are used to determine the reasons for the large number of variant designations as well as their functionality.

Zur Sättigung der Valenz in den Kleinen Meldungen des Typus Notiz : Eine pragmatisch fundierte Analyse

Valency Realization in Short Excerpts of News Text. A Pragmatics-funded analysis This dissertation is a study of the so-called pragmatic valency. The aim of the study is to examine the phenomenon both theoretically by discussing the research literature and empirically based on evidence from a text corpus consisting of 218 short excerpts of news text from the German newspaper Frankfurter Allgemeine Zeitung. In the theoretical part of the study, the central concepts of the valency and the pragmatic valency are discussed. In the research literature, the valency denotes the relation among the verb and its obligatory and optional complements. The pragmatic valency can be defined as modification of the so-called system valency in the parole, including non-realization of an obligatory complement, non- realization of an optional complement and realization of an optional complement. Furthermore, the investigation of the pragmatic valency includes the role of the adjuncts, elements that are not defined by the valency, in the concrete valency realization. The corpus study investigates the valency behaviour of German verbs in a corpus of about 1500 sentences combining the methodology and concepts of valency theory, semantics and text linguistics. The analysis is focused on the about 600 sentences which show deviations from the system valency, providing over 800 examples for the modification of the system valency as codified in the (valency) dictionaries. The study attempts to answer the following primary question: Why is the system valency modified in the parole? To answer the question, the concept of modification types is entered. The modification types are recognized using distinctive feature bundles in which each feature with a negative or a positive value refers to one reason for the modification treated in the research literature. For example, the features of irrelevance and relevance, focus, world and text type knowledge, text theme, theme-rheme structure and cohesive chains are applied. The valency approach appears in a new light when explored through corpus-based investigation; both the optionality of complements and the distinction between complements and adjuncts as defined in the present valency approach seem in some respects defective. Furthermore, the analysis indicates that the adjuncts outside the valency domain play a central role in the concrete realization of the valency. Finally, the study suggests a definition of pragmatic valency, based on the modification types introduced in the study and tested in the corpus analysis.

Die Großstadt als Gegner? : Zur Wahrnehmung Berlins in Literatur, Film und Hörspiel der späten Weimarer Republik

Tässä tutkielmassa tarkastellaan, miten Berliinin suurkaupunki vaikutti Weimarin tasavallan loppuaikoina yksilöön. Tutkimusaineistona on Alfred Döblinin romaani Berlin Alexanderplatz sekä Walter Ruttmannin elokuva Berlin. Die Sinfonie der Großstadt ja kuunnelma Weekend. Teoreettisena taustana hyödynnetään kulttuuri- ja mediahistorian mentaliteetti- ja sosiaalihistoriaa. Aihetta käsitellään myös historiallis-temaattisesta lähtökohdasta, eli työssä tutkitaan todellisen Berliinin asemaa kyseisenä aikana, modernin metropolin olemusta, modernin ajan murrosvaihetta sekä uusasiallisen taidesuuntauksen vaikutusta teoksiin. Weimarin tasavallan aikana Saksassa elettiin murroksen keskellä. Toisaalta yhteiskunta oli poliittisesti pirstoutunut ja taloudellisesti epävakaa, mutta toisaalta kulttuurielämä oli lyhyen aikaa rikasta. Suurkaupungin asukkailla oli enemmän vapaa-aikaa ja mahdollisuuksia toteuttaa itseään omassa ympäristössään. Toisaalta ajan ristiriitaisuus kuitenkin vaikeutti yksilöllisen elämäntavan toteutumista; ihmiset odottivat murroskauden päättymiseltä materiaalista tyydytystä, jolloin henkiselle kehitykselle jäi vähän tilaa. Tärkein kysymyksenasettelu koskee suurkaupungin roolia oman aikansa tuotteena: missä määrin kaupunki oli ihmisen todellinen vastustaja ja missä määrin sen asema oli kuviteltua? Todellisen Berliinin suhdetta reflektoidaan fiktiiviseen suurkaupunkiympäristöön. Ensin tarkastellaan Berliiniä toimijana murroskaudella ja sitten käsitellään ajan ja tilan havainnointia. Koska teokset ovat fiktiivisiä, erityisen tarkastelun kohteena on todellisuuden, fiktion ja simulaation suhde. Tässä yhteydessä tarkastellaan myös kaupungin ja maaseudun välistä problematiikkaa. Kolmannessa osassa esille nousee yksilön ja massan välinen suhde, joka sekin vaikuttaa ihmisen ja suurkaupungin väliseen vastakkainasetteluun. Ilmensikö koneiden ja liikenteen dominoiva asema futuristista asetelmaa? Lisäksi käsitellään alamaailman ja kultaisen 20-luvun välistä kuilua. Kaikkia kolmea teosta yhdistää 24 tunnin aikakäsite; ajalla on selkeästi rajattu alku ja loppu, ja myös tilan käsite on tarkastelussa tärkeä. Kaikissa teoksissa on hyödynnetty montaasitekniikkaa. Kohtaukset vaihtuvat hyvinkin nopeasti, jolloin lukija, katsoja tai kuulija vieraantuu varsinaisesta kohteestaan. Montaasi vaikuttaa ratkaisevasti myös kaupungin ja yksilön suhteen kuvaukseen. Suurkaupungista muotoutuu lähes hirviömäinen, personifioitu subjekti, joka konemaisella olemuksellaan pyrkii nujertamaan pienen ihmisen. Döblinin romaanissa kertoja toimii ikään kuin yksilöä vastaan liittämällä kerronnan väliin uutisaiheita, säätiedotuksia ja kohtalokertomuksia. Elokuvassa ja kuunnelmassa teknologisen kehityksen ihannointi on noussut etualalle: ihmiset muistuttavat sekä yksilöinä että massana koneita, jotka liikkuvat hektisen mekaanisesti eteenpäin kuin liikennevälineet. He eivät kyseenalaista ympäristöään eivätkä koe olevansa oravanpyörässä. Romaanin päähenkilö on heijastanut omat pelkonsa konkreettisesti suurkaupungin infrastruktuuriin, kerrostaloihin, jotka tuntuvat kaatuvan hänen päälleen. Yksilöllinen kehitys on vaarassa pysähtyä, sillä koneistuminen tekee yksilöistä massaa. Elokuvassa ja kuunnelmassa kamppailu suurkaupunkiorganismin ja ihmisten välillä jatkuu, mutta romaanissa kamppailu päättyy päähenkilön parantumiseen. Hänestä tulee mallikansalainen - vaiennettu ja kuuliainen. Kaikkien kolmen teoksen hahmoja kuvataan modernin ajan uhreina. Heiltä puuttuu mekanismi, jolla he voisivat käsitellä kokonaisuuksia. Modernin ajan hahmojen elämä on lopulta kuin tanssia tulivuoren päällä - epävarmaa ja riskialtista.