Congrès International d'Architecture Moderne

About: Congrès International d'Architecture Moderne is a based out in . It is known for research contribution in the topics: Boundary value problem & Jet (fluid). The organization has 393 authors who have published 403 publications receiving 4104 citations.

Free vibration of laminated truncated conical shell structure using spline approximation

Abstract: Free vibration of laminated truncated conical shell structures is studied by using spline approximation method. The governing equations of motion for conical shell are formulated in terms of longitudinal, circumferential and transverse displacement components, by using extension of Love’s first approximation theory. Assuming the displacement components are in a separable form, a system of coupled equations on three displacement functions for each shell are obtained. Since exact solutions are generally impossible, a numerical solution procedure is adopted in which the displacement functions are approximated by using Bickley-type splines of suitable order, which are cubic and quintic, resulting into a generalised eigenvalue problem. 1Corresponding author, E-mail: visu20@yahoo.com The convergence and comparative results are presented. Effects of the circumferential node number, relative thickness ratio, length ratio and semi-cone angle on the frequencies of the laminated truncated conical shell with two kinds of material properties under two different boundary conditions are investigated. AMS subject classification:

Development of integrated model for continuous berth allocation problem and quay crane scheduling with non crossing constraint

Abstract: High efficiency of port operation is required to succeed in the competition between port container terminals. Berth Allocation and Quay Crane Scheduling are the most important part in container terminal operations. The integrated model is formulated as a MIP problem with the objective to minimize the sum of the dwell times, where a vessel's dwell time is measured between arrival and departure including both times waiting to be berthed and servicing time while berthed. The construction of suitable mathematical model is formulated by considering various practical constraints.

Towards probabilistic arbitration in sensors integration

Abstract: Purpose – The purpose of this paper is to model an important aspect of the problem of sensor information integration that arises in wireless communications, where N sensors try to communicate with a receiver using a single un‐shareable radio channel. If several sensors transmit at the same time, their transmissions collide at the receiver resulting in garbled messages and the need for re‐transmission. This is highly undesirable since the sensors are energy‐constrained and the radio interface is known to be the most significant source of energy expenditure. Consequently, it is of paramount importance to design arbitration protocols that are highly efficient in stamping out collisions and that are, at the same time, as lightweight as possible.Design/methodology/approach – The receiver advertises a time division multiple access (TDMA) frame consisting of n slots, numbered from 1 to n, where n is an application‐dependent parameter. Each sensor generates uniformly at random, and independently of other sensor, ...