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Co‑simulation Improvement for Uncertain Flexible Robot Arm
Lilia Zouari,Mossaad Ben Ayed,Slim Chtourou,Shaya Abdullah Alshaya,Mohamed Abid 대한전기학회 2020 Journal of Electrical Engineering & Technology Vol.15 No.1
Flexible robot arm driven by Brushless DC Motor (BDCM) under uncertainties represents one of the most complex and heterogeneous system. Indeed, the verifcation phase becomes a great challenge for designers. Avoid and predict risks accurately at earlier stage represents the main purpose of the Computer-Aided Design (CAD) feld. This paper treats the case of robotics system for tracking trajectory problem and attempts to improve the verifcation phase by identifying the most suitable co-simulation technique. For the system analyzed in this paper, the fexible robot arm driven by Brushless DC actuator is verifed using the Model In the Loop (MIL) technique, the Software In the Loop (SIL) technique and CODIS+technique. Each one verifes the system according to a particular abstraction level. The performance of each technique is determined by measuring the accuracy and time simulation. Experimental results have revealed that CODIS+is the most adequate technique for fexible robot arm, outperforming MIL and SIL by 4–5 times.
Survey of IEC61850 M2M Interface based on IoT Protocols in Smart Grid Environment
Lilia Tightiz,Hyosik Yang 한국통신학회 2019 한국통신학회 학술대회논문집 Vol.2019 No.1
Monitoring and control of electricity power network have been led to introducing Smart Grid (SG). All previous dispersed attempts in automation of each part of electricity network is affected by this novel approach to provide a unified environment. IEC 61850 as the communication standard of substation automation is one of the standards which affected by the movement of power grid towards the intelligent. The standard committee has been realized precisely well considering fast innovation of communication technology by defining IEC 61850 stat-of-theart way of specifying communication standard. The paper depicts although there have been lots of efforts to fulfill smart grid environment requirements by introducing new parts of standard and editing existence parts during recent years such as introducing distributed generation equipment in data modeling and eXtensible Messaging and Presence Protocol (XMPP) protocol for mapping standard on Wide Area Network, it is necessary to investigate other Internet of Things (IOT) protocols which are suggested in other literature and laboratory experiences and compare all characteristics of them including Quality of Services (QoS), implementation infrastructure requirements and future development based on IEC 61850 message specifications such as message pattern and latency constraint.
Invasive Success of Small Hive Beetles in Honey Bee Colonies with Screen and Solid Bottom Boards
Lilia I. de Guzman,Amanda M. Frake 한국양봉학회 2019 韓國養蜂學會誌 Vol.34 No.4
Small hive beetles (SHBs) are invasive pests of Apis mellifera colonies. Within the last five years, SHBs have been detected in Asia, Europe and South America. The high colonization capability of SHB is facilitated by their small size, agility, long survival and ability to conduct long-range dispersal flights. We compared the invasion success of adult SHBs in colonies with screen (8-mesh) or solid bottom boards facing inward or outward of the apiary. Notched beetles were released at the center of an apiary that was devoid of honey bee colonies for about two months and tracked their presence in the colonies for four months. Overall, colonies with screen and solid bottom boards had similar numbers of beetles (~4 notched and 4 no notch). No influence of hive entrance orientation on the number of beetles was also observed. This suggests that the use of screen bottom boards does not promote an increase of SHB population in honey bee colonies since beetles invaded colonies through hive entrances and not through the screen mesh. Thus, screen bottom boards can be used as a component of an Integrated Pest Management program for Varroa mite control.
Influence of Culture Conditions on Production of NGPs by Aspergillus tubingensis
( Lopez De Leon Lilia ),( Caceres Isaura ),( Bornot Julie ),( Choque Elodie ),( Raynal Jose ),( Taillandier Patricia ),( Mathieu Florence ) 한국미생물생명공학회(구 한국산업미생물학회) 2019 Journal of microbiology and biotechnology Vol.29 No.9
The filamentous fungus Aspergillus tubingensis that belongs to the black Aspergillus section has the capacity to produce high-value metabolites, for instance, naphtho-gamma-pyrones (NGPs). For these fungal secondary metabolites, numerous biological properties of industrial interest have been demonstrated, such as antimicrobial, antioxidant and anti-cancer capacities. It has been observed that production of these secondary metabolites is linked with fungal sporulation. The aim of this research was to apply osmotic and oxidative environmental stresses to trigger the production of NGPs in liquid cultures with CYB (Czapek Dox Broth). In addition, numerous parameters were tested during the experiments, such as pH value, incubation time, container geometry, and static and agitation conditions. Results demonstrate that the produced amount of NGPs can be enhanced by decreasing the water activity (a<sub>w</sub>) or by adding an oxidative stress factor. In conclusion, this study can contribute to our knowledge regarding A. tubingensis to present an effective method to increase NGP production, which may support the development of current industrial processes.
Responses of Varroa-resistant honey bees (Apis mellifera L.) to Deformed wing virus
Kitiphong Khongphinitbunjong,Lilia I. de Guzman,Thomas E. Rinderer,Matthew R. Tarver,Amanda M. Frake,Yanping Chen,Panuwan Chantawannakul 한국응용곤충학회 2016 Journal of Asia-Pacific Entomology Vol.19 No.4
The negative impact of Deformedwing virus (DWV) on European honey bees Apis mellifera is magnified by Varroa destructor parasitism. This study compared the responses of two Varroa-resistant honey bee stocks, pure Russian honey bees (RHB) and out-crossed Varroa Sensitive Hygienic bees, Pol-line (POL) to DWV infection to that of Varroa- susceptible stock, Italian honey bees (IHB). Two-day-old larvae were fed with DWV lysate in different concentrations: undiluted DWV lysate (D1), D1:100, and D1:1000. The unfed larvae served as negative control. Combs containing test larvae were exposed to a common environment during their development using host colonies. Our results showed that only POL displayed variation in DWV levels when fed different DWV concentrations. POL fed highest concentration of DWV inoculum had the highest increase in DWV level than those fed low concentrations and unfed POL. This high increase in DWV level probably contributed to the decrease in the survival and median longevity (LT50) of D1-fed POL. Weights of newly eclosed D1-fed POL were similar to those of the two controls and DWV-fed bees. However, within IHB, D1-fed bees showed significant reductions in weight, days of survival and LT50. Regardless of the concentrations of DWV inoculum, the DWV levels were similarly low within RHB; adult bees had similar weights. Overall, larvae fed D1 had the highest rate of wing deformation. POL and RHB had numerically lower proportions of bees with deformed wings. This study suggests that RHB showed some degree of resistant to DWV as shown by no reduction on weight and numerically lower proportion of wing deformity when compared with the other bee stocks.