Similar Search Results

Inexact subgradient methods for quasi-convex optimization problems

Hu, Yaohua; Yang, Xiaoqi; Sim, Chee-Khian - In: European Journal of Operational Research 240 (2015) 2, pp. 315-327

-convex constrained optimization problem. The inexactness stems from computation errors and noise, which come from practical … considerations and applications. Assuming that the computational errors and noise are deterministic and bounded, we study the effect …

Persistent link: https://www.econbiz.de/10011097791

Technology & environment : some possible damaging effects of technological change in advanced and opulent societies

Coccia M. - United Nations University-Maastricht Economic Research … - 2014

An interesting problem is the analysis of effects of the predominant impact of technological change on the health of societies. This study considers technological change as the human activity that generates a huge impact on societies and causes environmental disorders affecting the health of...

Persistent link: https://www.econbiz.de/10011103319

Behavior of the Blade Tip Vortices of a Wind Turbine Equipped with a Brimmed-Diffuser Shroud

Takahashi, Shuhei; Hata, Yuya; Ohya, Yuji; Karasudani, … - In: Energies 5 (2012) 12, pp. 5229-5242

To clarify the behavior of the blade tip vortices of a wind turbine equipped with a brimmed-diffuser shroud, called a “Wind-Lens turbine”, we conducted a three-dimensional numerical simulation using a large eddy simulation (LES). Since this unique wind turbine consists of not only rotating...

Persistent link: https://www.econbiz.de/10011031181

Optimising threshold levels for information transmission in binary threshold networks: Independent multiplicative noise on each threshold

Zhou, Bingchang; McDonnell, Mark D. - In: Physica A: Statistical Mechanics and its Applications 419 (2015) C, pp. 659-667

uniform noise is considered. Similar to previous results for additive noise, we find a bifurcation phenomenon in the optimal … threshold values, as the noise intensity changes. This occurs when the number of threshold units is greater than one. We also … study the optimal thresholds for combined additive and multiplicative Gaussian noise, and find that all threshold levels …

Persistent link: https://www.econbiz.de/10011117855

Misunderstandings about airline growth

Swan, William - In: Journal of Air Transport Management 13 (2007) 1, pp. 3-8

Consolidation is a myth. Data suggest that the airline industry is not consolidating. Competition is either increasing or almost constant, depending on the type of measurement. Hubs are here to stay because half the Oâ€“D travel in the world is in markets too small to be served nonstop....

Persistent link: https://www.econbiz.de/10011162580

Investor sentiment, optimism and excess stock market returns. Evidence from emerging markets

Daszynska-Zygadlo, Karolina; Szpulak, Aleksandra; … - In: Business and Economic Horizons (BEH) 10 (2014) 4, pp. 362-373

We test the existence of a contemporaneous relationship between sentiment/optimism indexes and returns at the aggregate market level in eight emerging markets, namely: Brazil, China, India, Mexico, Poland, Republic of South Africa, Russia and Turkey. We use sentiment and optimism Thomson Reuters...

Persistent link: https://www.econbiz.de/10011166603

Dynamics of Gompertzian tumour growth under environmental fluctuations

Sahoo, S.; Sahoo, A.; Shearer, S.F.C. - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 6, pp. 1197-1207

We investigate the effect of correlated additive and multiplicative Gaussian white noise on the Gompertzian growth of … noise and the multiplicative noise and (ii) as a function of the multiplicative noise intensity (D) and additive noise … intensity (α). It is observed that both the correlation strength and the intensities of additive and multiplicative noise …

Persistent link: https://www.econbiz.de/10011057086

Stochasticity and non-locality of time

Ohira, Toru - In: Physica A: Statistical Mechanics and its Applications 379 (2007) 2, pp. 483-490

-locality into the time variable. For stochasticity in time, these models include noise in the time variable but not in the “space …

Persistent link: https://www.econbiz.de/10011057166

Theoretical and experimental study of excess noise in elastic solids

Dykhne, A.M.; Zosimov, V.V.; Rybak, S.A.; Manukin, A.B.; … - In: Physica A: Statistical Mechanics and its Applications 241 (1997) 1, pp. 94-101

Experimental results of excessive mechanical noise detection for samples under small loads within the linear range of …–5)×107 N/m2. The mechanical noise investigation consisted in measuring the radial (“barrel-shaped”) oscillations of a cylinder …

Persistent link: https://www.econbiz.de/10011057362

Noise-induced synchronization in a lattice Hodgkin–Huxley neural network

Pang, James Christopher S.; Monterola, Christopher P.; … - In: Physica A: Statistical Mechanics and its Applications 393 (2014) C, pp. 638-645

. We first demonstrate the existence of an optimal noise level that brings about the highest average number of APs per unit … neurons forming an N×N lattice, is optimal at different noise strengths σc=σc(p), depending on the degree of random …

Persistent link: https://www.econbiz.de/10011057633