Interactions between input and output variables are a prevalent challenge in the design of multi-loop controllers for multivariable processes, and they can be a major stumbling block to obtaining good overall performance of a multi loop control system. The deconstructed dynamic interaction analysis is proposed to solve this limitation by decomposing the multi loop control system into a series of n independent SISO systems, each with its own PID controller. The multivariable decoupler and multi loop PID controller is applied to Two Tank Conical Interacting System (TTCIS). This TTCIS is chosen as benchmark problem used by many researchers. Firstly, the Mathematical modelling of TTCIS is derived using First principal model. The non-linear system is linearized using Jacobian matrix and decomposed into multiple SISO systems. The controller design for the process is then obtained, and an RGA matrix is constructed to minimise the interaction effects. To demonstrate the efficiency of the suggested strategy, simulation results using TTCIS are provided.

Multivariable liquid level control is necessary in process industries to ensure quality of the product and safety of the equipment. However, the significant problems of the control system include excessive time consumption and percentage overshoot, which result from ineffective performance of the tuning methods of the PID controllers used for the system. In this paper, fuzzy logic was used to tune the PID parameters to control a four-coupled-tank system in which liquid level in tanks 1 and 2 were controlled. Mass Balance equation was employed to generate the transfer function matrix for the system, while a Fuzzy Inference System (FIS) file is created and embedded in fuzzy logic controller blocks, making tuning rules for the PID. Matlab R2009b simulation of the system model shows that the rise time (RT), settling time (ST), peak value (PV) and percentage overshoot (PO) for the developed DF-PID controller were 1. 48 s, 4. 75 s, 15 cm and 0% respectively for tank-1; and 0. 86 s, 2. 62 s, 10 cm and 0% respectively for tank-2, which are the smallest and best values when compared with other PID tuning methods namely: Ziegler-Nichols, Cohen-Coon and Chien-Hrones-Reswick PID tuning methods.

Background: Primary Immunodeficiencys (PID) are severe disorders of immune system leads to high morbidity and mortality. Special investigation has been performed for improving the knowledge about PID and organizing registry of these patients. 10 warning signs of PID in native language are used in education programs for pediatric, immunologist and other specialists. The Objective of the study was to educate and increase awareness of PID diagnosis and treatment, also to detect primary immune deficiency in patients with suspicion on immune abnormalities.Methods: Three years study was performed with children and adult patients with severe and repeated infections from the different regions of Azerbaijan Republic. Research based on the recommendation of JMF. Data from the patient records were analyzed in relation to age, gender, type of infections and complications.Findings: 240 patients, children and adults, with repeated and severe infections were suspected on PID and examined during 2010-2012 years. The PID registry was from 2011 and now total 13 clinical immunologists and 4 lab staff are working on PID in the medical centers in Baku. The number of patients being followed is 45, number of patients identified with PID is 28 and 7 patients genetically confirmed and regularreceive IVIG treatment. 17 patient have unspecified diagnose of PID. Patients died in this period were 12. There were published special brochure with algorithm of PID diagnosis and textbook on PID for students and residents.Conclusion: Still there are many undiagnosed immune compromised patients in Azerbaijan. Despite the PID educational program and practical seminars, the investigation of PID in patients is not routinely, most of patients not treated by immunologists and we have no patients received BMT.

Sortition is widely used in social and economic mechanisms whenever it is required to choose one of the participants at random in a fair manner. On the other hand, by growth of the Internet, social and economic mechanisms are required to perform online sortition procedures in such a way that users can trust them. We propose a novel online sortition protocol, which is Decentralized, and the winner of the sortition is chosen with the aid of all participants. In the real life, the sortition takes place via the lottery machine, which satisfies fairness, randomness, non-repudiation and openness. We argue that our proposed protocol also satisfies all these properties.