1,304 research outputs found
Technological Capability as a Determinant of FDI Inflows: Evidence from Developing Asia & India
No full textThis paper contributes to the empirical literature on determinants of FDI by addressing the question: Why do some developing countries from Asia continue to receive more FDI, while others from the region have fallen behind? It finds R&D-based innovative capacities, and the ability to apply such capacities through modern IT-based techniques, as the two key determinants explaining FDI inflows to developing Asian economies. These traits are found significant for inward FDI in India too with more technology intensive sectors receiving greater FDI. The findings of the paper suggest that in the absence of strong technological foundations and well-developed communications infrastructure, liberal policies alone are not enough for drawing FDI, once initial advantages, like cheap labour, fizzle out. For developing countries like India, strong thrust on R&D and innovative skills is needed for attracting FDI in technology-intensive exports. Therefore, policy actions would have to go further than a broad-based opening up of sectors to FDI, and increasing the limit of such investment in these sectors, for sustained inflows of FDI.FDI inflows, technology and technological capabilities, locational advantages, IT-based communication facilities
Complexity in congestive heart failure: A time-frequency approach
No full textReconstruction of phase space is an effective method to quantify the dynamics of a signal or a time series. Various phase space reconstruction techniques have been investigated. However, there are some issues on the optimal reconstructions and the best possible choice of the reconstruction parameters. This research introduces the idea of gradient cross recurrence (GCR) and mean gradient cross recurrence density which shows that reconstructions in time frequency domain preserve more information about the dynamics than the optimal reconstructions in time domain. This analysis is further extended to ECG signals of normal and congestive heart failure patients. By using another newly introduced measure—gradient cross recurrence period density entropy, two classes of aforesaid ECG signals can be classified with a proper threshold. This analysis can be applied to quantifying and distinguishing biomedical and other nonlinear signals
Test of Viscosity Theories of Flory, Kurata, Ptitsyn and Palit for Dilute Polymer Solutions
No full textOptical complexity in external cavity semiconductor laser
No full textIn this article, the window based complexity and output modulation of a time delayed chaotic semiconductor laser (SL) model has been investigated. The window based optical complexity (OC), is measured by introducing the recurrence sample entropy (SampEn). The analysis has been done without and in the presence of external noise. The significant changes in the dynamics can be observed under induced noise with weak strength. It has also been found that there is a strong positive correlation between the output power and the complexity of the system with various sets of parameters. The laser intensity, as well as the OC can be increased with the incremental noise strength and the associated system parameters. Thus, optical complexity quantifies the system dynamics and its instabilities, since is strongly correlated with the laser outputs. This analysis can be applied to measure the laser instabilities and modulation of output power
A non-obtrusive technique to characterize dielectric charging in RF-MEMS capacitive switches
No full textDegradation and failure due to dielectric charging has been a dominant and pervasive reliability concern for RF-MEMS switches. Traditionally, the operational lifetime dictated by this degradation phenomenon is extrapolated from a series of measurements of time-dependent shifts in Capacitance-Voltage (C-V) characteristics under accelerated stress conditions. In this paper, we explain why the classical large-signal C-V methodology may lead to a pessimistic under-prediction of device lifetime. Using both simulations and experiments, we propose and verify a new small-signal characterization technique based on resonance characteristics of MEMS cantilever beams. This new technique overcomes the limitations of the classical approaches to accurately anticipate device lifetime and opens up the possibility of non-obtrusive, in-situ runtime monitoring of degradation in RF-MEMS switches. Moreover, since the technique is amenable to `parallel\u27 implementation, it has the potential to be used both as an in-line process monitor as well as to reduce the overall time to technology qualification
Can complexity decrease in congestive heart failure?
No full textThe complexity of a signal can be measured by the Recurrence period density entropy (RPDE) from the reconstructed phase space. We have chosen a window based RPDE method for the classification of signals, as RPDE is an average entropic measure of the whole phase space. We have observed the changes in the complexity in cardiac signals of normal healthy person (NHP) and congestive heart failure patients (CHFP). The results show that the cardiac dynamics of a healthy subject is more complex and random compare to the same for a heart failure patient, whose dynamics is more deterministic. We have constructed a general threshold to distinguish the border line between a healthy and a congestive heart failure dynamics. The results may be useful for wide range for physiological and biomedical analysis
Technological Capability as a Determinant of FDI Inflows - Evidence from Developing Asia & India
No full textDuring 2006-07, FDI inflows into India were more than double than those in 2005-06. Indeed, during April-January 2006-07, inward FDI into India at US2-3 billion during the late 1990s. In recent years, India has also emerged as one of the leading FDI destinations in Asia. On the whole, the pattern of FDI inflows to developing Asia itself has changed significantly over the years. Some leading Southeast Asian economies (for example, Malaysia, Indonesia, Thailand and Philippines) no longer attract as much FDI as they used to in the past. Thisis in sharp contrast to some East and Southeast Asian economies that continue to draw large FDI (for example, China, Hong Kong and Singapore). In the above context, this paper attempts to explain the country-wise variations in the pattern of FDI flows to developing Asian economies by empirically identifying location specific features influencing such flows. The paper argues that some countries in the region, which have developed long term sources of comparative advantages in the form of superior technological capabilities and supporting infrastructure have consistently attracted greater volumes of export-oriented FDI. These attributes are also crucial for explaining the steady improvement in FDI flows to India. The paper finds that with production processes becoming increasingly complex and technology-intensive, developing countries like India, must devote greater attention to the development of R&D and frontier technologies, failing which, they might lose out in the race for FDI.FDI inflows, technology and technological capabilities, locational advantages, IT-based communication facilities
Cosolvency Studies of Polyethylene. Part-II : Viscometric Studies in Different Cosolvent Media
No full textDepartment of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Calcutta.-700 032
Manuscript received 14 May 1980, revised 14 July 1981, accepted 26 February 1982
Polyethylene (PE), though insoluble in all solvents near room temperature, has been found to be soluble in a number of binary mixtures, one of which is CS2. vs c plots for such systems have been found to be consistently of negative slope and in a few cases, this negative slope at low dilution is so pronounced as to appear like the 'upswing', typical of polyelectrolytes. The Mark-Houwink constants in a few such cosolvent pairs have been determined at a number of temperatures. Besides, the intrinsic viscosity-molecular weight relationship deduced theoretically by Palit has also been tested and found to be satisfactory. Further,. the viscometric data have been utilised to calculate the unperturbed dimensions of PE (at different temperatures) by the use of Stockmayer-Fixman equation which agrees well with literature data. However, the viscosity data do not comply with the expectation of the theories of Kurata-Stockmayer-Roig or Flory-Schaefgen or Ptitsyn which may be due to a difference in composition of the solution layer and the bulk of the solution
- …
