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On Generalized Controllability Canonical Form with Multiple Input Variables
Ning Cai,M. Junaid Khan 제어·로봇·시스템학회 2017 International Journal of Control, Automation, and Vol.15 No.1
This paper proposes a generalized controllability canonical form for linear multi-input systems by extendingthe normal controllability canonical forms. It is shown that there exists appropriate similarity transformationfor any non-trivial system to transform it into a generalized controllability canonical form, even if the system is notcompletely controllable. The potential application scenarios are reviewed, especially for large-scale networkedsystems. The Luenberger format is taken as an instance to delineate the configuration of a generalized form. Anumerical example is presented to demonstrate the relevant algorithm.
A Controllability Synthesis Problem for Dynamic Multi-Agent Systems with Linear High-Order Protocol
Ning Cai,Junwei Cao,M. Junaid Khan 제어·로봇·시스템학회 2014 International Journal of Control, Automation, and Vol.12 No.6
In this paper, a problem on controllability synthesis for dynamic multi-agent systems with high-order linear protocol is addressed. A particular scenario is considered, in which a given system should be adjusted to be controllable by the input information upon the created leaders, with optional communication links from the leaders to each follower vertex in the graph. It is shown that a single leader is always sufficient to satisfy the requirement for controllability of any given graph topology, so long as there are proper links between the leader and the followers.
Muhammad Maqsood,Rahmatullah Qureshi,Masroor Ikram,M. Sheeraz Ahmad,Bushra Jabeen,Muhammad Rafique Asi,Junaid Ahmed Khan,Safdar Ali,Lothar Lilge 한국한의학연구원 2018 Integrative Medicine Research Vol.7 No.2
Background: The Pakistani Salt Range has a rich floral diversity including Withania coagulans from the Solanaceae family. Methods: The crude methanolic extracts of the root, leaf, leaf stalk, and fruit of this plant were screened for their cytotoxic activity against human (HeLa, MCF-7, RD) and rat (RG2 and INS-1) cancer cell lines at 20 μg/mL and compared to methotrexate. The IC50 values indicated that leaf stalk and fruit extracts exert an 80% or higher cytotoxic activity against all cell lines at 24 hours. Results: The leaf stalk extract showed the highest cytotoxic efficacy against all tested cell lines, with IC50 values ranging from 0.96 ± 0.01 μg/mL to 4.73 ± 0.05 μg/mL followed by the fruit extract with IC50 values of 0.69 ± 0.01–6.69 ± 0.06 μg/mL after 48–72 hours incubation. The leaf stalk and seed extracts were analyzed for polyphenols and flavonoids using RP-HPLC. The total flavonoid content (TFC) was calculated for all tested samples, and the highest TFC was recorded for the root extract (394.34 ± 1.26 μg/g). The total phenolic content (TPC) was found in the seed extract (307.86 ± 9.42 μg/g) of W. coagulans. The highest contents of myricetin (358.46 ± 2.91 μg/g) were noted in the leaf extract, and highest quercetin was recorded in the seed extract (21.43 ± 0.13 μg/g). The highest gallic acid concentration (83.62 ± 0.71 μg/g) was recorded in leaf stalk extract and p-hydroxybenzoic acid in the seed extract (157.46 ± 1.43 μg/g). Conclusion: The present study gives a scientific insight and comparative analysis of various plant parts in this medicinally important plant species from the Salt Range of Pakistan against both human and rat cancer cells.