Restructuring Controllers to Accommodate Plant Nonlinearities

This thesis explores the possibility of controller restructuring for improved closed-loop performance of nonlinear plants using a gradient based method of symbolic adaptation- Model Structure Adaptation Method (MSAM). The adaptation method starts with a controller which is a linear controller designed according to the linearized model of the nonlinear plant. This controller is then restructured into a series of nonlinear candidate controllers and adapted iteratively toward a desired closed-loop response. The noted feature of the adaptation method is its ability to quantify structural perturbations to the controllers. This quantification is important in scaling the structural Jacobian that is used in gradient-based adaptation of the candidate controllers. To investigate this, two nonlinear plants with unknown nonlinearities viz., nonlinear valve and nonlinear inverted pendulum are chosen. Furthermore, the properties of restructured controllers obtained for two systems, stability, effect of measurement noise, reachability, scalability and algorithmic issues of MSAM are studied and compared with the starting controller

Long term impact of industrial effluents on agricultural soil

Rapid industrialization affects the environment in different ways by discharging the large amount of effluent as waste water in the surrounding water bodies, causing the serious problems to environment. Due to lack of irrigation water in the present study area canal water was used in which effluents from various industries were being discharged. Four water samples were collected from four locations and three to four replicate analysis was carried out for each sample. Sampling locations were selected after each 0.5 km from discharging points. Collected water samples were analyzed for physico-chemical characteristic, heavy metal and sulphide content. Five soil samples were collected from different fields and three to four replicate analysis was carried out for each samples. Impact of effluent on agricultural soil, is mainly due to the presence of high nutrient contents (Nitrogen and Phosphorus), high total dissolved solids and other constituents such as heavy metals, which are added to the soil over time. Wastewater can also contain salts that may accumulate in the root zone with possible harmful impacts on soil health and crop yields. The leaching of these salts below the root zone may cause soil and groundwater pollution. Prolonged use of saline and sodium rich wastewater is a potential hazard for soil as it may erode the soil structure and effect productivity. This may result in the land use becoming non-sustainable in the long run. Wastewater induced salinity may reduce crop productivity. The net effect on growth may be a reduction in crop yields and potential loss of income to farmers. Canal water was containing high COD, BOD values and higher heavy metal content and the soil irrigated with this water was showing the poor status of the nutrients and high contamination of heavy metals. The present study was to evaluate the various adverse effects on the soil characteristics irrigated with discharged water

Design and Implementation of Enhanced Single Sign on System for Education Systems

Consider a college education portal needs to provide access to different domain courses and tutorials to it’s students. But to incorporate numerous resources and tutorials onto one education portal can be tedious and space constraint. Multiple systems typically require multiple sign-on dialogues to access the resources. Users need to register on multiple portals to access the contents and courses and it indulge the headache of remembering multiple sets of credentials. Users also have to present credentials multiple times they login to these portals/websites. With these scenarios, when there are more security domains, the more sign-ins required. It also requires to restrict access to unauthorized users when log-ins are authenticated. If there are redundancy of resources across multiple websites, users may show lack of interest due to redundancy and authorization. headache. Single sign on system is the proposed method to provide access to the educational learning resources/contents. In this approach, one-time login is required and the logged in user can access the relevant authorized service provider’s resources without need to login to their UI facing. This approach provides a secure way to authenticate users by the unique hash password validation and time stamp validation. If both the validation are performed, the requesting user will be provided access to other website resources as well where the user’s authorization is done with the valid token and access key. Hence, the other websites can share common resources across multiple domains without the technology barrier

Flow diagnostics

The measurement of flow properties within fluid handling systems is of utmost importance for efficient operation and control of such systems. For single phase flow systems, extensive research has been carried out world over to diagnose the flow properties both globally and locally. Considerable advancements are being made to perfect these technologies. For multiphase flows there is still a lot of scope for technological development that needs to take place to diagnose the flow conditions accurately efficiently and effectively. In this present paper two methods are described that can be used effectively for measurement of flow properties in solid-liquid flows and gas-liquid flows. One of the methods relies on isokinetic sampling used in conjunction with impact probe for the determination of solid distribution and solid velocity in solid-liquid flows through a pipeline. The other method relies on electrical resistance method to calculate local flow velocity corresponding to the dispersed phase as well as volume fraction and interfacial area concentration

Effect of chemical mutagen (Ethyl methane sulfonate) on Money plant (Epipremnum aureum)

Epipremnum aureum, commonly known as pothos, is a hardy indoor foliage ornamental crop. Mutation breeding in Golden pothos is needed to meet the demand for more valuable and highly sought-after cultivars. The present  study aimed to exploit variability on various parameters viz. new leaf emergence, survival percentage, plant height, length and width of leaves. The experiment was set up using a Complete Randomized Design (CRD) with 8 treatments and 3 replications. Rooted cuttings of Golden pothos were treated with varying concentrations of Ethyl Methane Sulfonate (EMS) for 4 hours, and a control treatment was included. The results showed that all the treated cuttings with EMS delays the new leaf emergence period compared to the control. Compared to the control, the minimum number of new leaf emergences was found in EMS-treated plants. The maximum survival percentage (100%) was recorded in 0.1%, 0.5% and control treatment. The lowest plant height (15.3 cm ) was observed in treatment T4 (1.5 % EMS) treated plants. However, maximum plant height was observed in the control treatment at 150 days of interval. In comparison to the control, EMS decreased the length and width of leaves at higher dosages. The minimum leaf length and width, i.e. 2.40 cm and 1.20 cm, were recorded in plants treated with EMS at 2%, while maximum length and width were observed in control and low EMS-treated plants.   The  study showed that ethyl methane sulfonate affected plant development characteristics and showed some dwarfness of money plants.  This appears to be the first report of EMS treatment on pothos.

液状化地盤における杭基礎の地盤変位・慣性力に基づく地震時挙動の評価

京都大学新制・課程博士博士(工学)甲第23484号工博第4896号新制||工||1765(附属図書館)京都大学大学院工学研究科社会基盤工学専攻(主査)教授 渦岡 良介, 教授 木村 亮, 准教授 澤村 康生学位規則第4条第1項該当Doctor of Philosophy (Engineering)Kyoto UniversityDGA

IN SILICO MODELLING OF β-LACTAM RESISTANT ENTEROCOCCUS FAECALIS PBP4 AND ITS INTERACTIONS WITH VARIOUS PHYTO-LIGANDS

Objective: The resistance to β-lactam antibiotics is a serious problem worldwide. This resistance has emerged due to two main mechanisms: production of β-lactamases that hydrolyses β-lactam antibiotics and other is the production of low affinity mutated Penicillin Binding Proteins (PBPs) that can sustain even at the high concentration of antibiotics. The current study epitomises the identification of T(425)S mutations in PBP4 of β-lactam resistant Enterococcus faecalis isolated from uropathological samples of urinary tract infected (UTI) patients. Also, the effect of the this mutation was analysed by in silico strategies on ligand binding efficiencies of the active site of PBP4 towards selected β-lactam antibiotics as well as phytochemicals.Methods: To study the effect of T(425)S mutation towards emergence of antibiotic resistance pattern, the structural model was generated for wild-type and mutated PBP4 of E. faecalis using MODELLER and further studied the interactions of PBP4 with β-lactam antibiotics along with various phytochemicals identified and purified from selected medicinal plants possessing antibacterial activity using Autodock4 suite.Results: Based on the results of different docking parameters and a number of H-bond interactions, gallic acid, and quercetin were identified with highest binding affinity to the active site pocket of PBP4 of E. faecalis, compared to β-lactam antibiotics. Further, molecular simulation studies also supported this fact.Conclusion: T (425)S mutation has been identified with a significant change in ligand binding efficiencies towards tested β-lactam antibiotics. Moreover, gallic acid and quercetin have showed the possible antibacterial agent via blocking the active site of PBP4 of E. faecalis. The results presented here could be useful in designing more effective phyto-ligands based therapeutic antibacterial compounds against PBP4 of E. faecalis.Keywords: PBP4, Enterococcus faecalis, Autodock, Molecular dockin

Analysis of Cloud Storage Information Security and It’s Various Methods

Cloud computing is the latest paradigm in IT field promising trends. It provides the resources similar to accessibility of data, minimum cost and several other uses. But the major issue for cloud is the security of the information which is stored in the cloud. Various methods and specialized techniques are combined together for providing information security to data which is stored in cloud in this paper. The aim of this paper is to analyze various cryptographic techniques and to discuss about various security techniques over cloud and user authentication which is most helpful and useful in the information security over cloud. DOI: 10.17762/ijritcc2321-8169.15028

INTRODUCTION TO UPDHATU AND FORMATION OF STANYA FROM RASADHATU

Ayurved is a healing science based on the studies and keen observations. Ayurved gives priority to maintain the healthy state of a normal human being and treat the disease of patient. Success of any science depends on its fundamental principles. Fundamentals of Ayurved are very important body elements such as Dosha, Dhatu, Mala and Agni. Ayurved explained about quantities assessment of various biological elements like normal height of a person, normal values of different body tissues (Dhatu) like Rasa (plasma), Rakta (blood) etc. Updhatu is subsidiary tissue arises from Dhatus. Stanya (breast feeding) is one of them which is derived from Rasa Dhatu. World Health Organization recommends that exclusive breastfeeding for the first six months of life, after which "infants should receive nutritionally adequate and safe complementary foods. So in this article an attempt has been made to understand the concept of Updhatu and formation of Stanya from Rasa Dhatu. For this study, the basic materials have been collected from the Ayurved classics as well as textbook of contemporary modern medical science have been referred for better understanding of the concept and its comparison with contemporary science