Physik in ultrakurzen und ultraintensiven Feldern

Die Arbeit beschäftigt sich mit der Wechselwirkung sehr kurzer und sehr intensiver Lichtpulse mit Materie. im ersten Teil werden Experimente zur zeitaufgelösten Molekülspektroskopie und fundamentale Arbeiten zur kohärenten Kontrolle chemischer Reaktionen beschrieben. Im zweiten Teil der Arbeit wird die Erzeugung von Röntgenstrahlung mit intensiven Lasern untersucht. Es wurden Anwendungen dieser Röntgenstrahlung in Lithographie, Plasmaphysik und Kernphysik entwickelt

Relating Climate Change To The Nesting Phenology And Nest Environment Of Marine Turtles

Ectotherms (including marine turtles) being especially sensitive to climate, are at risk to the accelerated rate of human-driven climate change. This study addresses two concerns associated with marine turtles and climate change – the relationship between the timing of marine turtle nesting and sea surface temperature; and the concern over the feminization of marine turtle populations due to rising sand temperatures. Previous studies of loggerhead sea turtles (Caretta caretta) and green sea turtles (Chelonia mydas) have documented the relationship between sea surface temperatures and nesting phenology. Earlier nesting behaviors in both species have been associated with warmer sea surface temperatures. Also, sex determination for marine turtles is temperature-dependent. Due to current sand temperatures, it is estimated that loggerhead (Caretta caretta) nests along the Atlantic coast of Florida already produce over 89% female hatchlings. Using shade to reduce nest temperature and increase the proportion of male hatchlings is one option for mitigating the impacts of climate change on marine turtle sex ratios. In this study, a 21- year (1988-2008) dataset of hawksbill sea turtle (Eretmochelys imbricata) nesting at Buck Island Reef National Monument, St. Croix, U. S. Virgin Islands was analyzed in a similar manner to previous studies. It was found that warmer sea surface temperatures were associated with longer nesting seasons and later median nesting dates. Additionally, a preliminary sand shading study was conducted in the first field season (2011) with a subsequent loggerhead nest shading study in the following field season (2012). Although hatching success was not significantly impacted, temperatures were significantly reduced in the majority of shaded nests. This practice may not be immediately applicable as a means of managing sex ratios, but it could be used to reverse the temperature effects of nest relocatio

Invasive elodea threatens remote ecosystem services in Alaska: a spatially-explicit bioeconomic risk analysis

Thesis (Ph.D.) University of Alaska Fairbanks, 2017This dissertation links human and ecological systems research to analyze resource management decisions for elodea, Alaska's first submerged aquatic invasive plant. The plant likely made it to Alaska through the aquarium trade. It was first discovered in urban parts of the state but is being introduced to remote water bodies by floatplanes and other pathways. Once introduced, elodea changes freshwater systems in ways that can threaten salmon and make floatplane destinations inaccessible. The analysis integrates multiple social and ecological data to estimate the potential future economic loss associated with its introduction to salmon fisheries and floatplane pilots. For estimating the effects on commercial sockeye fisheries, multiple methods of expert elicitation are used to quantify and validate expert opinion about elodea's ecological effects on salmon. These effects are believed to most likely be negative, but can in some instances be positive. Combined with market-based economic valuation, the approach accounts for the full range of potential ecological and economic effects. For analyzing the lost trip values to floatplane pilots, the analysis uses contingent valuation to estimate recreation demand for landing spots. A spatially-explicit model consisting of seven regions simulates elodea's spread across Alaska and its erratic population dynamics. This simulation model accounts for the change in region-specific colonization rates as elodea populations are eradicated. The most probable economic loss to commercial fisheries and recreational floatplane pilots is $97 million per year, with a 5$456 million annually. The analysis describes how loss varies among stakeholders and regions, with more than half of statewide loss accruing to commercial sockeye salmon fisheries in Bristol Bay. Upfront management of all existing invasions is found to be the optimal management strategy for minimizing long-term loss. Even though the range of future economic loss is large, the certainty of long-term damage favors investments to eradicate current invasions and prevent new arrivals. The study serves as a step toward risk management aimed at protecting productive ecosystems of national and global significance.General introduction -- Chapter 1. Quantifying Expert Knowledge Using a Discrete Choice Model: Persistence of Salmonids in Habitat Invaded by Elodea -- Chapter 2. Aquatic Invasive Species Change Ecosystem Services from the World's Largest Sockeye Salmon Fisheries in Alaska -- Chapter 3. Aquatic Invasive Plants Alter Recreation Access for Alaska's Floatplane Pilots: an Application of Stated Geographic Preferences to Economic Valuation -- Chapter 4. Aquatic Invasive Species from Urban Source Lakes Threaten Remote Ecosystem Services in Alaska: Linking Floatplane Pathway Dynamics with Bioeconomic Risk Analysis -- General Conclusion -- References -- Appendix

Recent results on the Higgs boson candidate in the two-photon decay channel at ATLAS

This paper is intended to give an overview of the results of the ATLAS experiment at the LHC presented in December 2012 for the H → γγ channel using 4.8 fb−1 of data taken in 2011 at √s = 7TeV and 13.0 fb−1 of data taken in 2012 at √s = 8TeV

Book review: Me, not you: the trouble with mainstream feminism by Alison Phipps

In Me, Not You, Alison Phipps builds on Black feminist scholarship to investigate how mainstream feminist movements against sexual violence express a ‘political whiteness’ that can reinforce marginalisation and oppression and limits the capacity to collectively achieve structural change and dismantle violent systems. This short and accessible book challenges us to think deeply about how the politics of woundedness, outrage and carcerality are embedded within the feminist movement and our own organising, writes Lili Schwoerer, and serves as another encouragement to explore and engage with alternative imaginaries

Social Indicators for Arctic Mining

This paper reviews and assesses the state of the data to describe and monitor mining trends in the pan-Arctic. It constructs a mining index and discusses its value as a social impact indicator and discusses drivers of change in Arctic mining. The widely available measures of mineral production and value are poor proxies for economic effects on Arctic communities. Trends in mining activity can be characterized as stasis or decline in mature regions of the Arctic, with strong growth in the frontier regions. World prices and the availability of large, undiscovered and untapped resources with favorable access and low political risk are the biggest drivers for Arctic mining, while climate change is a minor and locally variable factor. Historical data on mineral production and value is unavailable in electronic format for much of the Arctic, specifically Scandinavia and Russia; completing the historical record back to 1980 will require work with paper archives. The most critically needed improvement in data collection and reporting is to develop comparable measures of employment: the eight Arctic countries each use different definitions of employment, and different methodologies to collect the data. Furthermore, many countries do not report employment by county and industry, so the Arctic share of mining employment cannot be identified. More work needs to be done to develop indicator measures for ecosystem service flows. More work also needs to be done developing conceptual models of effects of mining activities on fate control, cultural continuity and ties to nature for local Arctic communities

"No Standing Armies!"

Originally published in 1974. In her study of primary materials in England and the United States, Schwoerer traces the origin, development, and articulation in both Parliament and in the popular press of the attitude opposing standing armies in seventeenth-century England and the American colonies. Central to the criticism of armies at that time was the conviction that ultimate military power should be vested in Parliament, not the Crown. Schwoerer shows how the many diverse elements of England's antimilitarism, including political principle, propaganda, parliamentary tactics, parochialism, and partisanship, hardened with every confrontation between the Crown or Protector and Parliament. The author finds a general predisposition to distrust professional soldiers early in the century, and from the 1620s onward she notes opposition to a standing army in times of peace. Highlighting the growth of the antimilitary tradition, Schwoerer traces the development of this attitude from the Petition of Right in 1628 to the 1641–1642 crisis over the Militia Bill/Ordinance, the military settlements of 1660 and 1689, and the climactic events of 1667–1699. Schwoerer shows how the anti-standing-army ideology affected the constitutional thinking of the American colonists and manifested itself in the Constitution and the Bill of Rights. She addresses timeless questions of how to provide for a nation's defense while preserving individual liberty, citizen responsibility for military service, and the relationship of executive and legislative authority over the army

Lady Rachel Russell

Originally published in 1987. Lady Rachel Russell (1637–1723) was regarded as "one of the best women" by many of the most powerful people of her time. Wife of Lord William Russell, the prominent Whig opponent of King Charles II who was executed for treason in 1683, Lady Russell emerged as a political figure in her own right during the Glorious Revolution and throughout her forty-year widowhood. Award-winning historian Lois G. Schwoerer has written a biography that illuminates both the political life and the lives of women in late Stuart England. Lady Russell's interest in politics and religion blossomed during her marriage to Lord Russell and after his death: "as William became a Whig martyr, Rachel became a Whig saint." Her wealth, contacts, and role as her husband's surrogate gave her considerable influence to intercede in high government appointments, lend support in elections, and exchange favors with her friend Mary of Orange. In her domestic life she similarly took steps usually reserved to men, managing large estates in London and Hampshire and negotiating favorable marriage contracts for each of her three children. Although Lady Russell was unusual for her time, she was by no means unique. Other notable women shared her concerns and traits, although to differing degrees and effects. Schwoerer suggests that the horizons of women's lives in the seventeenth century may have extended farther than is often supposed

To Hold and Bear Arms: The English Perspective

This Article discusses the English background to the Second Amendment of the Constitution of the United States and undertakes to contest the prevailing opinion that the old medieval English duty of service in the militia, imposed theoretically on all males between the age of sixteen and sixty, was transformed at the time of England\u27s Glorious Revolution in 1688–89 into the right of the individual to keep and bear arms. The author of that thesis, Professor Joyce Malcolm of Bentley College in Massachusetts, maintains that Article VII of the Declaration of Rights, 1689 (better known as the Bill of Rights, its statutory form) secured that right and bequeathed it to the American colonists who, when drafting the Second Amendment, broadened that legacy, sweeping aside limitations and forbidding any infringement upon the individual right to possess arms. This Article, however, argues that this thesis is unacceptable and offers a reading of the evidence and of the nature of late-seventeenth-century England society and thought that is different from that of Professor Malcolm. This Article maintains that throughout its long history, the English government, for reasons that changed over time, took steps to limit and/or supervise the possession of guns. At no time did majority opinion hold that there was either a natural law right or a constitutional right of all individuals, not even all Protestant individuals, to have arms. There was no unrestricted English right of the individual to possess guns for the colonists to inherit

Ab initio investigation of intermolecular interactions in solid benzene

A computational strategy for the evaluation of the crystal lattice constants and cohesive energy of the weakly bound molecular solids is proposed. The strategy is based on the high level ab initio coupled-cluster determination of the pairwise additive contribution to the interaction energy. The zero-point-energy correction and non-additive contributions to the interaction energy are treated using density functional methods. The experimental crystal lattice constants of the solid benzene are reproduced, and the value of 480 meV/molecule is calculated for its cohesive energy