The effect of different combinations of response feedback on the performance of active control system on nonlinear frames has been studied in this paper. To this end different feedback combinations including displacement, velocity, acceleration and full response feedback have been utilized in controlling the response of an eight story bilinear hysteretic frame which has been subjected to a whit...

Steel frame with steel plate shear walls (SPSWs) is used to resist lateral loads caused by wind and earthquakes in high-rise buildings. In this load-resisting system, the cost performance are more efficient than moment system. Behaviors of beam-to-column connections assumed be pinned or fixed simplify calculation past few decades. However, studies have stated that such a simulation fails reveal...

We study portfolio optimization problems in which the drift rate of the stock is Markov modulated and the driving factors cannot be observed by the investor. Using results from filter theory, we reduce this problem to one with complete observation. In the cases of logarithmic and power utility, we solve the problem explicitly with the help of stochastic control methods. It turns out that the va...

The effectiveness of Metallic dampers for seismic response reduction of structures is quite well known in the earthquake engineering community. However, little attention has been paid to evaluating the influence of the number and placement of this type of dampers on the dynamic response. Using genetic algorithms as an optimization technique will allow for the simultaneous number and design of a...

Pada perencanaan struktur gedung, perhitungan beban lateral akibat gempa sangat diperlukan. Analisis respons spektrum adalah cara analisa hubungan antara periode bangunan dengan nilai percepatan ketika terkena gempa. Analisa statik ekuivalen biasa digunakan pada yang tidak terlalu tinggi, dimana pengaruh dianggap sebagai horisontal pergerakan tanah. Penelitian ini menggunakan objek gedung perku...

Near-fault ground motions have caused very much damage in the vicinity of seismic sources during recent earthquakes. It is well known that under specific circumstances, intensive ground shakings near fault ruptures may be characterized by short-duration impulsive motions. This pulse-type motion is generally particular to the forward direction, where the fault rupture propagates towards the site...

A tuned mass rocking wall (TMRW)-frame structure system is proposed to improve the energy dissipation ability of traditional wall-frame system. Based on principle damper (TMD), a TMRW designed with proper and stiffness according dynamic characteristic host structure. Firstly, considering presence inherent structural damping, amplification factor main was derived from equations mechanism. practi...

The order in which user stories are implemented can have a significant influence on the overall development cost. The total cost of developing a system is non commutative because of dependencies between user stories. This paper presents a systematic and lightweight method to identify dependencies between user stories, aiding in the reduction of their impact on the overall project cost. Initial ...

In this paper, necessary and sufficient conditions are stated for the Craig-Sakamoto equation det(I − sA − tB) = det(I − sA)det(I − tB) to hold for all scalars s, t ∈ C. Moreover, spectral properties for matrices A and B that satisfy this equation are investigated.

The concept of development as freedom can be seen as an expansion process of real freedoms people enjoy, associated with their freedom of choices in social, political and economical spheres. Certain international agencies propose that Information and Communication Technology (ICT) allow this development to be reached more efficiently and quickly. While there are success stories galore, there is...