Private Rights versus Public Power: The Role of State Action in Alaska Constitutional Jurisprudence

Linear approximations of nonlinear systems can be obtained by fitting a linear model to data from a nonlinear system, for example, using the prediction-error method. In many situations, the type of linear model and the model orders are selected after estimating several models and evaluating them using various validation techniques. Two commonly used validation methods for linear models are spectral and residual analysis. Unfortunately, these methods will not always work if the true system is nonlinear. However, if the input can be viewed as if it has been generated by filtering white noise through a minimum phase filter, spectral and residual analysis can be used for validation of linear models of nonlinear systems. Furthermore, it can be shown that the input minimum phase property guarantees that a certain optimality result will hold. Here, the benefits of using minimum phase instead of non-minimum phase filters for input design will be shown both theoretically and in numerical experiments

Investigation of the hydrogenation of SiCl4

A laboratory scale pressure reactor was constructed to study the 3 SiCl + 2H2 + Si yields 4 SiHCl3 reaction at pressures up to 500 psig. Reaction kinetic measurements were carried out as a function of reactor pressure, reaction temperature and H2/SiCl4 feed ratio. Based on the reaction kinetic data, the hydroclorination of SiCl4 and m.g. silicon metal is found to be an efficient process to produce SiHCl3 in good conversions and in high yields. Copper is an effective catalyst. Results of the corrosion study show that conventional nickel chromium alloys are suitable material of construction for the hydrochlorination reactor. The hydrochlorination reaction is relatively insensitive to external process parameters such as silicon particle size distribution and the impurities in the m.g. silicon metal

Koordinationschemie perhalogenierter Cyclopentadiene und Alkine, X

Coordination Chemistry of Perhalogenated Cyclopentadienes and Alkynes, X[1]. - Synthesis and Molecular Structure of a Cyclopentadienyl-1,3-dithiol Complex, [C5Cl3(SH)2]Mn(CO)3 The reaction of [C5Cl4Li]Mn(CO)3 with elemental sulfur leads to [C5Cl4SLi]Mn(CO)3 (1), which is easily oxidized by air to the disulfide (OC)3Mn[C5Cl4S-SCl4C5]Mn(CO)3 (2). Addition of one equivalent of BuLi, followed by an excess of S8 produces the dithiolate [C5Cl3(SLi)2]Mn(CO)3 (3), which yields the dithiol [C5Cl3(SH)2]Mn(CO)3 (5) upon hydrolysis. The molecular structures of 2 and 5 have been determined by X-ray diffraction

Using Virtual Exchange to Advance Media Literacy Competencies through Analysis of Contemporary Propaganda

With the rise of so-called fake news as a global phenomenon, interest in propaganda analysis has advanced along with the recognition of the fundamentally social process of interpretation. In this essay, we explore the use of cross-national dialogue among German and American undergraduate students who are seeking to better understand how media messages are interpreted and how they inform and guide the civic actions of citizens. We describe and analyze five lessons that used a virtual exchange using a variety of digital media platforms, texts and technologies to support the cross-national study of contemporary propaganda. We observed that cross-national dialogue enables students to gain sensitivity to the role of cultural context in interpreting propaganda. Rather than conceptualize propaganda education as an ideologically benign set of context-free skills, pedagogies that include opportunities for cross-national dialogue foreground the importance of cultural specificity as a means to unpack the complex discursive context of propaganda as digital political communication

Etnicidade e Cidadania: Algumas Considerações sobre as Bases Étnicas da Mobilização Política

The objective of this paper is to examine some aspects of ethnicity in two differents minority groups: few questions concerning negro and german brazilian ethnic identities are analysed. The intention is to show that despite the differences in these two cases, ethnicity emerge and is elaborated as a form of complete citizenship reinvidication.indisponíve

Bereichsrezension: Utopien & Dystopien

Eckart Voigts, Alessandra Boller (Hg.): Dystopia, Science Fiction, Post-Apocalypse: Classics – New Tendencies – ModelInterpretationsArtur Blaim, Ludmiła Gruszewska-Blaim (Hg.): Mediated Utopias: From Literature to CinemaBarbara Klonowska, Zofia Kolbuszewska, Grzegorz Maziarczyk (Hg.): (Im)perfection Subverted, Reloaded and Networked:Utopian Discourse Across Medi