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B. Balamuralitharan,Suresh Kannan Balasingam,S. N. Karthick,Ananthakumar Ramadoss,Manab Kundu,박진수,조인호,프라바카르,전용석,김희제 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.71 No.-
Iron pyrite (FeS2) is an interesting mineral in the transition metal dichalcogenide group due to its highabundance in the earth’s crust which can be used for various electrochemical energy storage applications,such as batteries and supercapacitors; however, it suffers from low rate capability and poor cycleperformance, which hampers its use from large-scale commercial applications. In the present study, irondisulfide microspheres anchored onto a reduced graphene oxide matrix (rGO-FeS2 hybrid) were grownusing a superficial hydrothermal method. For comparison, rGO-free iron disulfide material wassynthesized under the same hydrothermal conditions, and uniformly distributed FeS2 micro-sizeflowerswere formed. The energy storage capacity of both electroactive materials (FeS2 and rGO-FeS2 hybridmaterial) was tested for supercapacitor applications in a symmetric cell configuration. The pristine FeS2microflower electrode exhibited an areal capacitance of 70.98 mF cm 2 at 5 mV s 1. On the other hand,the rGO-FeS2 hybrid microsphere electrode exhibited an enhanced areal capacitance of 112.41 mF cm 2 atthe same scan rate with an excellent capacitance retention of 90% over 10,000 cycles. The improvedelectrochemical performance of the rGO-FeS2 hybrid material is due mainly to its improved electricalconductivity, high surface area indicating an enhanced electron, and ion transfer mechanism. This studysuggests that the rGO-FeS2 hybrid electrode material has potential applications in energy storage devices.
Sudha Rani. S.V,B. Ramadoss 보안공학연구지원센터 2015 International Journal of Software Engineering and Vol.9 No.7
An Unmanned Air Vehicle (UAV) is a collection of functionalities and capabilities required to execute complex missions, with the combination of ground systems (comprising of vehicle and payload control) on ground and Avionics Systems (along with various payloads) on board. The UAV executes various missions using a combination of payloads and their ground control. The mission-based evaluation of the UAV is a challenging task in terms of achieving sufficient test adequacy in generating effective test cases for accomplishment of complex mission roles. The timeliness performance, which is a combination of event-triggered and time-triggered execution of tasks, is the most important category to evaluate an Integrated System’s Mission based performance, in addition to the correctness and consistency of data transactions among the various systems. This paper proposes a framework for an exhaustive mission-based evaluation of timeliness of integrated Avionics Systems of the UAV. The authors introduce various functional mutation operators for achievement of adequate test adequacy for this timeliness performance evaluation.