The current paper demonstrates a dichotomy of the growth response to changes in the barter terms of trade, employing as case studies the two African countries, Botswana and Nigeria.Using distributed-lag analysis, the paper finds that the effect of terms of trade on output is positive and negative for the two countries, respectively. I interpret these results as supportive of the ‘resource curse...

In the light of previous literature fertility determines different economic, social and program inputs variables. The main object of this study to investigate the impact of sector specific (health and education) foreign aid on fertility in case of Pakistan. For empirical investigation Auto Regressive Distributed Lag Model (ARDL) is used over the period of 1973-2012. The results of the study sho...

For linear systems with pointwise or distributed delay in the inputs which are stabilized through the reduction approach, we propose a new technique of construction of Lyapunov-Krasovskii functionals. These functionals allow us to establish the ISS property of the closed-loop systems relative to additive disturbances.

Abstract. This paper investigates the observer-based robust adaptive control problem for a class of stochastic Hamiltonian systems. The systems under consideration relate to parameter uncertainties, unknown state time-delay and input delay. The purpose is to design a delay-dependent observerbased adaptive control law such that for all admissible uncertainties, as well as stochasticity, the clos...

In this paper, robust state feedback and observer-based fuzzy controllers are developed for uncertain T-S fuzzy systems with input delay. By using a generalized Lyapunov function and introducing a parameterized model transformation with free weighting matrices, the less conservative robust stabilization conditions are given for both state measured and state unmeasured cases, which are formulate...

In the present study, the effect of core on shear lag phenomenon in tubular structures is investigated. Three different tubular structure models including model without core, model with central core and model with central core but eliminated in last 15 stories have been analyzed. A shear lag index is defined for evaluating these models. From examination of the results, the effective influence o...

Okun’s coefficient is estimated from U.S. quarterly data covering the period 1947:1–1992:2. The cyclical components of unemployment and output are extracted by smoothing using the Kalman filter as applied to Harvey’s structural time series model. The estimated Okun’s coefficient is around 20.38 irrespective of the whether the model used is static or dynamic and irrespective of the lag length in...

In this paper, the consensus problem is investigated for the secondorder multi-agent systems with input delay. Based on the frequency-domain analysis, the input-delay-dependent consensus conditions are obtained for the continuous-time system and the sampled-data system respectively. Simulation results illustrate the correctness of the theoretical results.