Chukchi Edges Project - Geophysical constraints on the history of the Amerasia Basin

The geological history of the Amerasia Basin is poorly understood, in part due to the lack of identified plate boundaries within it. These boundaries must exist to explain the basin history. Identification of these structures will make it possible to reconstruct the development of the basin, which will substantially improve our understanding of the surrounding continents. The Chukchi Borderland, a block of extended continental crust embedded in the Canada Basin, figures prominently in all tectonic models proposed for the opening of the Amerasia Basin. The Chukchi cannot be simply reconstructed back to any of the nearby continental shelves. It complicates any model for the Mesozoic opening of the Amerasia Basin. According to the commonly accepted model, the Canada Basin opened like a pair of scissors. This was accomplished by a counter-clockwise rotation of the North Alaskan-Chukchi micro-plate (Arctic Alaska Plate) by 66 degrees. The micro-plate collided with the Siberian margin. Most of the existing models for the development of the Amerasia Basin accept the basic pattern of scissors-like or, classically, the “windshield wiper” opening for the basin. This theory finds some support in the identification of a possible relict mid-ocean ridge axis in the central Canada Basin. Since the continental Chukchi Borderland creates a space problem for any simple opening model, the greatest differences between models revolve around how to accommodate that block. Fundamental differences among the proposed models include the paleo-location of the Chukchi Borderland as well as whether the Borderland is a single entity or is instead comprised of small terranes which behaved as independent microplates. A consequence of these models is the prediction that the Chukchi Borderland is distinct from the Chukchi Shelf. During the Chukchi Edges cruise on board the RV Marcus G. Langseth, we collected multi-channel seismic reflection, swath bathymetry, gravity, magnetics and sonobuoy refraction data across the transition from the Chukchi Shelf to the Borderland. These data will establish new constraints on the timing and distribution of deformation in the development of the Amerasia Basin and provide a test of the windshield wiper model of basin opening

Manipulating the morphology of poly (ethylene terephthlate) blends by capillary rheometry

The present work describes the formation of co-continuous phase morphologies in uncompatibilized and compatibilized poly(ethylene terephthalate) (PET)/poly(m-xylene adipamide) (MXD6) melt-extruded blends. Phase continuity has been determined by using Jordhamo relationship. Viscosity values which are essential for calculation of the phase continuity have been obtained by using capillary rheometry. Phase continuity has been investigated for the non-compatibilized and the compatibilized blends with scanning electron microscopy (SEM). PET/MXD6 blends (92.35/7.65 v/v and 84.5/15.5 v/v) exhibit a droplet-in-matrix phase morphology, while uncompatibilized PET/MXD6 (75.8/24.2 v/v) blend has a combination of rod-like, droplet/matrix structure, and quasi-interpenetrating network structure

Velocity Effect On Inflationary Growth of Turkey: Evidence From Co-integration Analysis and Granger's Causality Test

The Turkish economy has experienced high and persistent inflation rates in the last two decades. This inflation has persisted despite many unsuccessful stabilization policies, which have caused volatility in macro-economic indicators. The main aim of this paper is to analyze the impact of velocity on inflationary trend in Turkey over the period between 1996 and 2001. We assumed that there is a direct relationship between the two factors. However, velocity is not the major cause of inflation. The integration and co-integration tests have been adopted on monthly time series data to test the validity of the model by adding some control variables. Results show that velocity has a weak and negative effect on the inflationary growth of Turkey during this period. The effects of other control variables on inflation growth have also been tested. Some aspects of this linear relationship have been obtained by Granger’s Causality Test.Velocity, Co-Integration Tests, Error Correction Mechanism, Granger’s Test

Energy-efficiency for MISO-OFDMA based user-relay assisted cellular networks

The concept of improving energy-efficiency (EE) without sacrificing the service quality has become important nowadays. The combination of orthogonal frequency-division multiple-access (OFDMA) multi-antenna transmission technology and relaying is one of the key technologies to deliver the promise of reliable and high-data-rate coverage in the most cost-effective manner. In this paper, EE is studied for the downlink multiple-input single-output (MISO)-OFDMA based user-relay assisted cellular networks. EE maximization is formulated for decode and forward (DF) relaying scheme with the consideration of both transmit and circuit power consumption as well as the data rate requirements for the mobile users. The quality of-service (QoS)-constrained EE maximization, which is defined for multi-carrier, multi-user, multi-relay and multi-antenna networks, is a non-convex and combinatorial problem so it is hard to tackle. To solve this difficult problem, a radio resource management (RRM) algorithm that solves the subcarrier allocation, mode selection and power allocation separately is proposed. The efficiency of the proposed algorithm is demonstrated by numerical results for different system parameter

A Survey of Proprietorship, Continental Bureaucratic Empires, and the Culture of Power, in South Asian History

This historical survey examines the relationship between proprietorship, state structure, and cultures of power, over the broad expanse of South Asian History. In doing so the focus is kept upon the major Indian empires (Maurya, Delhi Sultanate, Mughal, British). The paper maintains that in continental bureaucratic empires that manifest arbitrary cultures of power the rulers perceive the state and the country as a personal estate. Consequently, the level of insecurity even within the elite, which can be dispossessed by the ruler, is remarkably high. Pervasive insecurity means that the incentives to work, save, and invest, are greatly diminished, and the creativity and enterprise that sustain qualitative improvement in the economic and technological base are by and large lacking. This pattern manifests itself more or less consistently until the British period when, for a number of reasons, private property, the rule of law, and other reforms are introduced. A new dynamic gains momentum an the basis for a modern economy are laid.Proprietorship, Culture of Power, Economic History