Early Warning Signals of Military Coups : A Case Study of Montenegro

The following paper focuses on the identification of basic early warning signals of military coups. The primary purpose is to use a theoretical framework of coups and create a list of factors that increase the probability of upcoming or ongoing military coups. This list will be applied to a case study of Montenegro, which recently experienced an attempt of overthrowing its government.Tento text je zaměřen na identifikaci základních signálů, které by mohly varovat před vojenským pučem. Jeho hlavním smyslem je na bázi teoretického rámce vojenských pučů vymezit faktory, které zvyšují pravděpodobnost blížícího se a proběhnuvšího vojenského převratu v zemi. Vytvořené schéma a seznam faktorů budou aplikovány v rámci jednopřípadové studie na nedávný pokus o puč v Černé Hoře

Religious Extremism as a Cause of Armed Conflicts : Indicators and Early Warning Systems

The main topic and focus of this article is to identify the most relevant indicators of the rise of religious extremism as an important cause of armed conflicts. A religiously motivated conflict is a relevant topic in modern security studies and research. Conflict prevention using the early-warning indicators identified in this article might be interesting for the security expert community. In the article chosen methodology is available with the recommendation to following research in the examined field.Hlavním cílem tohoto textu je identifikovat nejčastěji využíváné a nejrelevantnější indikátory vzestupu náboženského extremismu ve společnosti jakožto důležité příčiny ozbrojených konfliktů. Nábožensky motitovaný konflikt je důležitým tématem současného bezpečnostního výzkumu. Jeho prevence za použití systému včasného varování opřeného právě o dílčí indikátory je tak pro bezpečnostní komunitu velice zajímavá. Tento článek představuje vybrané metodiky a doporučení pro další navazující výzkum celé problematiky

Iranian Policy and Activities in Bosnia and Herzegovina

The aim of this article is an analysis of the Iranian policy towards the region of Western Balkans, mainly the state of Bosnia and Herzegovina, since the early 1990s until present days. The security and political dimensions of mutual relation between Iran and Bosnia and Herzegovina are examined. This country has been on the focus of Iranian foreign policy for decades. The article maps Iranian political, religious and cultural activities in the country during and after the civil war. One of the main outcomes of the text is the analysis of stagnation, and we might say even fall of Iranian influence in the region caused by changing of the international atmosphere, Iranian regime itself and the decline of Iranian money flow to Bosnia and Herzegovina caused by problematic economic situation in the Islamic Republic suffering the lack of sources

Dynamics, cation conformation and rotamers in guanidinium ionic liquids with ether groups

Ionic liquids are modern materials with a broad range of applications, including electrochemical devices, the exploitation of sustainable resources and chemical processing. Expanding the chemical space to include novel ion classes allows for the elucidation of novel structure-property relationships and fine tuning for specific applications. We prepared a set of ionic liquids based on the sparsely investigated pentamethyl guanidinium cation with a 2-ethoxy-ethyl side chain in combination with a series of frequently used anions. The resulting properties are compared to a cation with a pentyl side chain lacking ether functionalization. We measured the thermal transitions and transport properties to estimate the performance and trends of this cation class. The samples with imide-type anions form liquids at ambient temperature, and show good transport properties, comparable to imidazolium or ammonium ionic liquids. Despite the dynamics being significantly accelerated, ether functionalization of the cation favors the formation of crystalline solids. Single crystal structure analysis, ab initio calculations and variable temperature nuclear magnetic resonance measurements (VT-NMR) revealed that cation conformations for the ether- and alkyl-chain-substituted are different in both the solid and liquid states. While ether containing cations adopt compact, curled structures, those with pentyl side chains are linear. The Eyring plot revealed that the curled conformation is accompanied by a higher activation energy for rotation around the carbon-nitrogen bonds, due to the coordination of the ether chain as observed by VT-NMR

Dynamics, cation conformation and rotamers in guanidinium ionic liquids with ether groups

Ionic liquids are modern materials with a broad range of applications, including electrochemical devices, the exploitation of sustainable resources and chemical processing. Expanding the chemical space to include novel ion classes allows for the elucidation of novel structure-property relationships and fine tuning for specific applications. We prepared a set of ionic liquids based on the sparsely investigated pentamethyl guanidinium cation with a 2-ethoxy-ethyl side chain in combination with a series of frequently used anions. The resulting properties are compared to a cation with a pentyl side chain lacking ether functionalization. We measured the thermal transitions and transport properties to estimate the performance and trends of this cation class. The samples with imide-type anions form liquids at ambient temperature, and show good transport properties, comparable to imidazolium or ammonium ionic liquids. Despite the dynamics being significantly accelerated, ether functionalization of the cation favors the formation of crystalline solids. Single crystal structure analysis, ab initio calculations and variable temperature nuclear magnetic resonance measurements (VT-NMR) revealed that cation conformations for the ether- and alkyl-chain-substituted are different in both the solid and liquid states. While ether containing cations adopt compact, curled structures, those with pentyl side chains are linear. The Eyring plot revealed that the curled conformation is accompanied by a higher activation energy for rotation around the carbon-nitrogen bonds, due to the coordination of the ether chain as observed by VT-NMR

Anion and ether group influence in protic guanidinium ionic liquids

Ionic liquids are attractive liquid materials for many advanced applications. For targeted design, in-depth knowledge about their structure–property-relations is urgently needed. We prepared a set of novel protic ionic liquids (PILs) with a guanidinium cation with either an ether or alkyl side chain and different anions. While being a promising cation class, the available data is insufficient to guide design. We measured thermal and transport properties, nuclear magnetic resonance (NMR) spectra as well as liquid and crystalline structures supported by ab initio computations and were able to obtain a detailed insight into the influence of the anion and the ether substitution on the physical and spectroscopic properties. For the PILs, hydrogen bonding is the main interaction between cation and anion and the H-bond strength is inversely related to the proton affinity of the constituting acid and correlated to the increase of 1 H and 15N chemical shifts. Using anions from acids with lower proton affinity leads to proton localization on the cation as evident from NMR spectra and self-diffusion coefficients. In contrast, proton exchange was evident in ionic liquids with triflate and trifluoroacetate anions. Using imide-type anions and ether side groups decreases glass transitions as well as fragility, and accelerated dynamics significantly. In case of the ether guanidinium ionic liquids, the conformation of the side chain adopts a curled structure as the result of dispersion interactions, while the alkyl chains prefer a linear arrangement

Towards Flexible and Cognitive Production—Addressing the Production Challenges

Globalization in the field of industry is fostering the need for cognitive production systems. To implement modern concepts that enable tools and systems for such a cognitive production system, several challenges on the shop floor level must first be resolved. This paper discusses the implementation of selected cognitive technologies on a real industrial case-study of a construction machine manufacturer. The partner company works on the concept of mass customization but utilizes manual labour for the high-variety assembly stations or lines. Sensing and guidance devices are used to provide information to the worker and also retrieve and monitor the working, with respecting data privacy policies. Next, a specified process of data contextualization, visual analytics, and causal discovery is used to extract useful information from the retrieved data via sensors. Communications and safety systems are explained further to complete the loop of implementation of cognitive entities on a manual assembly line. This deepened involvement of cognitive technologies are human-centered, rather than automated systems. The explained cognitive technologies enhance human interaction with the processes and ease the production methods. These concepts form a quintessential vision for an effective assembly line. This paper revolutionizes the existing industry 4.0 with an even-intensified human–machine interaction and moving towards cognitivity

Complex corrosion properties of AISI 316L steel prepared by 3D printing technology for possible implant applications

This paper deals with the investigation of complex corrosion properties of 3D printed AISI 316L steel and the influence of additional heat treatment on the resulting corrosion and mechanical parameters. There was an isotonic solution used for the simulation of the human body and a diluted sulfuric acid solution for the study of intergranular corrosion damage of the tested samples. There were significant microstructural changes found for each type of heat treatment at 650 and 1050 degrees C, which resulted in different corrosion properties of the tested samples. There were changes of corrosion potential, corrosion rate and polarization resistance found by the potentiodynamic polarization method. With regard to these results, the most appropriate heat treatment can be applied to applications with intended use in medicine.Web of Science137art. no. 152

Festschrift anläßlich der Emeritierung von Prof. Dr.-Ing. Walter Raab

Festschrift zum Festkolloquium am 8. April 1994 anläßlich der Emeritierung von Herrn Prof. Dr.-Ing. Walter Raab, Leiter des Fachgebiets Maschinenlemente und Mechanik an der Technischen Hochschule Darmstadt