<p>Doktorska disertacija razrađuje metodologiju izrade modela upravljanja poplavama na velikim ravničarskim rekama korišćenjem preciznih digitalnih modela terena (DTM) i kombinacije 1D/2D hidrauličkih modela nestacionarnog tečenja. Za razradu modela korišćena je reka Dunav na teritoriji Srbije sa svojim pritokama. Dužina hidrauličkog modela je 715 km i postignuta tačnost modela, poređenjem izračunatih i izmerenih nivoa na devet vodomernih stanica, je ispod 10 cm. Dosadašnja strategija odbrane od poplava na velikim rekama, kao što je Dunav, bazirala se na &quot;pasivnim merama&quot; izgradnje nasipa i kejskih zidova. U radu je prikazana mogućnost primene nove strategije upravljanjem poplavnog talasa preko uređenih retenzija. Rezultati disertacije su omogućili i rekonstrukciju poplavnog talasa iz 1965. g.</p> / <p>The dissertation elaborates a methodology for flood management model on<br />large lowland rivers using precision digital terrain models (DTM) and<br />combined 1D/2D unsteady flow model. For the development of the model,<br />the river Danube on the territory of Serbia was used with its tributaries. The<br />length of the hydraulic model is 715 km and the achieved accuracy of the<br />model, by comparing the calculated and observed levels on 10 water<br />stations, is below 10 cm. Оur current defense against floods in big lowland<br />rivers is relied on passive defence with building and overhanging existing<br />levees and walls. In dissertation is shown the possibility of applying a new<br />strategies of flood management with retentions. The results of the<br />dissertation also enabled the reconstruction of the 1965. flood wave.</p>

Post-conflict behaviors, including reconciliation, redirected aggression, and consolation, have been observed in several primate and non-primate species. These behaviors are thought to help re-establish rates of affiliation and tolerance to baseline levels, by terminating the victims stress response, and reducing the social tension created by conflict. Post-conflict behavior was examined in two groups (N = 13) of captive western lowland gorillas, a species for which no previous conflict resolution data exist. The post-conflict/matched-control method was used to observe the groups at Zoo Atlanta. Analyses of 223 conflicts (using chi-square, Wilcoxon signed ranks, and Kolmogorov-Smirnov tests) showed significantly more affiliation between former opponents after a conflict when compared to control periods, indicating reconciliation. Results also showed significantly more affiliation between the victim and a third-party after a conflict, indicating consolation. Both solicited and unsolicited consolation were observed. Instances of redirected aggression were very few, and thus not included in the analyses. The majority of the affiliative interactions were social proximity, which suggests that unlike most nonhuman primates, proximity, rather than physical contact, may be the main mechanism for resolving conflicts in western lowland gorillas. Post-conflict behavior was not uniform throughout the groups, but rather varied according to dyad type (for instance, adult-adult, juvenile-juvenile, adult-juvenile, etc.). Effects of kinship and the intensity of aggression during a conflict on post-conflict behavioral patterns were analyzed.

No description available.

The purpose of this thesis is to document the changes in archaeological origin narratives concerning the lowland Preclassic Maya. This was accomplished by tracking the changes in four major narratives over several decades. These narratives include Herbert J. Spinden's Ancient Civilizations of Mexico and Central America; The Ancient Maya written by Sylvanus G. Morley, with additional editors, George Brainerd, Robert J. Sharer, and Loa Traxler; Michael D. Coe's The Maya, and Richard E.W. Adams's Prehistoric Mesoamerica. The specific parts of the narratives analyzed were the origins of agriculture, ceramic technology, writing, and monumental architecture. Changes in metaphorical language and illustrations that accompanied these texts were also analyzed. Shifts in narratives were tracked through the changes made to the texts in sequential editions, and were then compared between editions, and between books. The analysis of these narratives showed that the changes in the narratives resulted from a number of factors, including new technology, such as radiocarbon dating; new discoveries, in the form of artwork, sites, and artifacts; the decipherment of the Maya glyphs; and changes in the field of archaeology. The largest change that archaeological research has shown that Maya civilization is older than first imagined. Writing, ceramic technology, and monumental architecture are all now known be to centuries older than previously thought, all of which require a much different narrative than first told in 1841 by John Lloyd Stephens.

No description available.

Loess deposits are terrestrial clastic sediments derived from aeolian deposition. Loess is transported in periglacial conditions and was mainly deposited in cold environments around glaciers during the Quaternary period. To be able to understand and interpret past climate and how it was changing, loess deposits can be used as an indicator for example wind circulation and dustiness in the atmosphere. However, good independent chronological control is essential for using loess as a past climate archive. This study has examined loess from Lowland Point in the southwest of England. The loess at Lowland Point is relatively thin at 180 cm compared with more studied loess deposits further east on continental Europe. To be able to date the k-feldspar mineral grains from the loess deposit at Lowland Point, two values should be constrained for each sample: the equivalent dose (DE), a quantitative factor of the amount of energy accumulated by the mineral grain during burial from ionising radiation, and the dose rate (DR), a rate of ionising radiation absorbed from the surrounding environment per year. By using the post infrared-infrared stimulated luminescence (post-IR IRSL) method, the DE values were obtained, and by examine radioactive isotopes in the samples, the DR values were attained. The results of each average age per sample depth was then identified and the loess deposit could be determined to the age about 10.8-22.4 ka, which is suggested to have been deposited by meltwater from the British Irish Ice Sheet and permafrost. / Lössjordar är avlagringar av markbundna klastiska sediment härledda från eolisk deposition och transporteras under periglaciala förhållanden för att huvudsakligen deponeras i kalla miljöer runt glaciärer under kvartärperioden. För att kunna förstå och tolka tidigare klimat och hur det förändrades kan lössavlagringar användas som en indikation över till exempel vindcirkulation och dammighet i atmosfären. Denna studie har undersökt löss från Lowland Point i sydvästra England. Lössen vid Lowland Point är relativt tunn, med en tjocklek på 180 cm, jämfört med mer studerade lössjordar. För att kunna datera kalifältspat från lössjorden vid Lowland Point var förhållandet mellan två komponenter av betydelse; ekvivalentdosen (DE), en kvantitativ faktor för den mängd energi som mineralkornet ackumulerar vid sedimentering, och doshastigheten (DR), en hastighet av den mängd energi som absorberas i den omgivande miljön per år. Genom att använda metoden post infraröd-infraröd stimulerad luminescens (post-IR IRSL) erhölls DE-värden och genom att undersöka radioaktiva isotoper i proverna hittades DR-värden. Resultaten av varje medelålder per provdjup identifierades sedan och lössavlagringen kunde bestämmas till en ålder av cirka 10,8–22,4 ka, vilket indikerar en möjlig avsättning av smältvatten från det brittiska irländska istäcket och permafrost.

No description available.

Huge changes in climate occurred at the end of the last Quaternary glaciation. The end of this glaciation corresponds with the end of Pleistocene with its repeated glacial cycles and the start of the current geological epoch, the Holocene interglacial. The climate at this time was characterized by increasing temperatures and an increase in rainfall. This project focuses on understanding and examining these changes in climate using loess deposits from south-western England. Loess is an aeolian sediment and covers around 10 % of the Earth’s land surface and these deposits are excellent archives of past climate. Investigating loess can give understanding of past regional and local wind circulation patterns, atmospheric dustiness as well as weathering conditions. Studying paleoclimate is important since studying and understanding trends in past climate can increase our understanding of how the climate will change in the future. This study examined loess from two sites in south-western England, Porth Cressa and Lowland Point. These are relatively thin deposits; Lowland Point has a thickness of 180 cm and Porth Cressa has a thickness of 97 cm. England lacks the thick loess deposits that can be found in other parts of the world and thus the study of English loess has mostly been neglected. These deposits thus could contain unutilized information about paleoclimate. The elemental composition of the samples was examined using X-Ray Fluorescence (XRF). With the measured elemental composition, it’s possible to use weathering indices to see trends in postdepositional weathering. Low weathering intensities indicate a colder and drier climate, while higher weathering intensities indicate a warmer and more humid climate. The results from the weathering indices were plotted against depth at the two sites to identify changes in weathering and hence climate over time. Compared with the results from previous studies the results from some weathering indices seemed credible. Previous studies have indicated that the Chemical Proxy of Alteration (CPA) is the most appropriate weathering index for loess and the results from this study supports that theory. The results from the CPA show a trend with decreasing weathering intensities followed by a trend with increasing weathering intensities This implies that there was a period with decreasing temperatures/humidity followed by a period with increasing temperature humidity sometime at the end of the last glaciation. The geochemical data also showed support for a previous archaeological theory that there has been human reworking in the upper horizons at Lowland Point. / Slutet av den sista kvartära glaciationen var en tid med stora klimatförändringar. Denna tid sammanfaller med slutet av Pleistocene och dess glaciära cyklar samt starten på den nuvarande geologiska epoken, Holocen. Klimatet vid den här tiden karaktäriserades av ökande temperaturer och ökande nederbörd. Det här projektet fokuserar på att granska och förstå dessa klimatförändringar med hjälp av lössjordar från sydvästra England. Löss bildas av vindburet sediment och täcker ungefär 10 % av jordens landyta, dessa avlagringar är utmärkta arkiv för historiskt klimat. Att undersöka lössjordar kan ge information om historiska regionala och lokala vindcirkulations-mönster, vittringsförhållanden samt mängden damm i atmosfären. Att undersöka paleoklimat är viktigt då förståelse för trender i tidigare klimat kan ge oss förståelse för hur klimatet kommer förändras i framtiden. Den här studien undersökte löss från två platser i sydvästra England, Lowland Point och Porth Cressa. Dessa avlagringar är relativt tunna; Lowland Point har en tjocklek på 180 cm och Porth Cressa har en tjocklek på 97 cm. England har inte de tjocka lössavlagringarna som går att hitta i andra delar av världen och därför har lite forskning utförts på brittiskt löss. Dessa avlagringar kan alltså innehålla oanvänd information om paleoklimat. Provernas grundämnessammansättning undersöktes med X-Ray Fluorescence (XRF). Med den uppmäta grundämnessammansättningen är det möjligt att använda vittringsindex för att se trender i vittring efter deposition. En låg vittringsintensitet indikerar ett kallare och torrare klimat medan en högre vittringsintensitet indikerar ett varmare och fuktigare klimat. Resultaten plottades mot djup för att visuellt identifiera förändringar i klimatet över tid. Vid jämförelse med tidigare studier verkade resultaten från vittringsindexen trovärdiga. Tidigare studier har föreslagit att CPA (Chemical Proxy of Alteration) är det mest lämpliga vittringsindexet för lössjordar och resultaten från denna studie stödjer den teorin. Resultaten från CPA visade på en trend med minskade vittringsintensitet följt av en trend med ökande vittrings intensitet. Detta antyder att det var en period med minskande temperatur/fuktighet följt av en period med ökande temperatur/fuktighet runt slutet av den senaste istiden. De geokemiska resultaten stödde också den tidigare arkeologiska teorin att mänsklig aktivitet har påverkat de övre horisonterna vid Lowland Point.

In my several months of research I have been engaged in studying the distribution of affiliated and agonistic behaviour in a group and primarily towards a new female, over the course of ranking the new female into the group and changes in the social arrangement of the western lowland gorillas in Prague Zoo. For the research standardised observational methods were used, ad libitum sampling, focal animal sampling and scan sampling and statistical analysis on data was carried out with the aid of ethological software (Noldus- MatMan 1.0). Hypotheses stated that the agonistic contact towards Bikire would be initiated by females and above all from the female Shinda, also affiliated contact for Bikire would be initiated by the young and under aged, that the frequency of agonistic contact towards Bikire will gradually decline, that the other adults in the group are dominant to Bikire, that will result in lower affiliated contact and that the social structure will change in the group. From the results of the research it is confirmed, that agonistic contact towards the new female was initiated exclusively by females and in particular the female Shinda. Further it was confirmed, the initiators of the affiliated contact towards Bikire are the young and under aged female member Moja. It was revealed the other...

Procurou-se avaliar parâmetros fisiológicos de antas (Tapirus terrestris) de vida livre capturadas no Parque Estadual Morro do Diabo, estado de São Paulo, Brasil, entre 1996-2008 pelo Programa Anta Mata Atlântica. Paralelamente, avaliou-se a exposição desses animais a patógenos de interesse em saúde pública e saúde animal. Nesse período foram obtidas amostras de 35 animais. Os valores médios de hemograma e bioquímica sérica foram comparados com os valores de referência do ISIS, através do uso do teste t de Student. Os resultados médios de todos os parâmetros avaliados estavam dento do intervalo de variação descrito para a espécie em cativeiro. Títulos sorológicos incluíram Encefalite Equina Oeste (n=1 animal), Encefalite Equina Leste (n=6), Leptospira interrogans sorovar pomona (n=6), Leptospira interrogans sorovar autumnalis (n=1), Leptospira interrogans sorovar hebdomadi (n=1), Língua Azul (n=5), Rinotraqueíte Infecciosa Bovina (IBR) (n=1). Não foi detectada a presença de anticorpos para Febre Aftosa, Doença de Aujeszky, Parvovirose Suína, Diarréia Viral Bovina, Leucose Bovina, Estomatite Vesicular, Anemia Infecciosa Equina e Brucelose. Todas as capturadas apresentavam alta infestação de carrapatos, identificados como Amblyomma brasiliense, Amblyomma cajennense, Amblyomma coelebs, Amblyomma ovale, Amblyomma naponense, Haemaphysalis juxtakochi e Rhipicephalus (Boophilus) microplus. Alguns animais apresentaram Tunga penetrans e mosca-do-chifre (Haematobia irritans). Oito amostras de urinas de antas de vida livre foram analisadas e descritas pela primeira vez. Os swabs das cavidades naturais apresentaram Staphylococcus aureus em todos os orifícios. Escherichia coli em todos os orifícios, com exceção da orelha. Proteus sp. em todos os orifícios, com exceção do prepúcio. Ânus e vagina presentaram as mesmas bactérias, já prepúcio e ânus se distinguiram pelo Staphylococcus saprophyticus. / It was evaluated physiologic parameters of wild Lowland tapirs (Tapirus terrestris) captured in Morro do Diabo State Park, São Paulo state, Brazil, between 1996 2008 by Atlantic Rainforest Lowland Tapir Program. Together, it was evaluated the expose of these animals to pathogens of public health and animal health interest. During this time it was collected samples from 35 animals. The medium value of blood cells and serum biochemistry were compared with reference values of ISIS, with the t test of Student. All medium values of parameters evaluated were inside of regular range described for the specie in captivity. Serologic titles include West Equine Encephalitis (n= 1 animal), East Equine Encephalitis (n=6), Leptospira interrogans sorovar pomona (n=6), Leptospira interrogans sorovar autumnalis (n=1), Leptospira interrogans sorovar hebdomadi (n=1), Bluetongue (n=5), Infectious Bovine Rhinotraqueitis (IBR) (n=1). It was not detected antibodies to Foot and Mouth Disease, Aujeszky\'s disease, Porcine Parvovirosis, Bovine Viral Diarrhea, Bovine Leucosis, Vesicular Stomatitis, Equine Infectious Anemia and Brucelosis. All captured animals had high level of infestation of ticks, identified as Amblyomma brasiliense, Amblyomma cajennense, Amblyomma coelebs, Amblyomma ovale, Amblyomma naponense, Haemaphysalis juxtakochi and Rhipicephalus (Boophilus) microplus. Some animals had Tunga penetrans and mosca-do-chifre (Haematobia irritans). Eight samples of urine from wild tapirs were analyzed and described first time. The swabs from natural cavity showed Staphylococcus aureus in all of them. Escherichia coli in all cavities, except ears. Proteus sp. in all cavities, except prepucial. Anus and vagina showed the same kinds of bacteria, but prepucial and vagina show the same bacteria, and prepucial and anus to be different because Staphylococcus saprophyticus.