Control of Chaos in the Dynamics of Enceladus

We estimate a localized control term for the Hamiltonian of spin orbit dynamics of Enceladus. The aim is to modify the perturbation locally by a smaller and simple but robust control term which makes the controlled Hamiltonian more regular. Poincare surface of sections witnesses that the estimated control term is able to recreate invariant (KAM) tori without modifying other parts of phase space.Keywords: Chaos control; Poincare surface of section; Enceladus (Satellite

Cost calculation of ancillary services including system security, automatic generation control and reactive power

The recent changes in the electric utility industry due to the deregulation of the industry have created an immense need for the evaluation of all the services provided. The electric utility companies all across the United States have been providing these services for a long period of time. However, under the light of current deregulation, each one of these services have to be identified and evaluated separately. This thesis discusses three of these services, including security of the power system operation (Spinning and operating reserves), Automatic Generation Control (Load Following) and reactive power support. These three services are vital in operation of any power system. There is a lot of research currently being done to evaluate the cost of providing these services. The thesis makes an attempt to recognize the importance of these services and uses the system dispatch and unit commitment theory and principles to evaluate the cost of each of the above mentioned services

Tuberculosis in renal transplant recipients in Isfahan University of Medical Sciences

سابقه و هدف : عفـونت با مایکـوباکتـریـوم توبرکولوزیس یکـی از علل مهم بیمارگنـی و مرگ و میـر در دریافتکنندگان پیوند کلیه میباشد. شیوع توبرکولوزیس در این افراد به مراتب بیشتر از افراد عادي میباشد و در کشورهاي در حال توسعهو مناطق آندمیک از نظر B.T ،باز هم شیوع آن بیشتراست. مواد و روشها: در این مطالعه که از نوع مرور پرونده بود، 700 بیمار دریافتکننده پیوند کلیه بررسی شدند و 10 مورد ابتلاي قطعی به توبرکولوزیس، از نظر اطلاعات دموگرافیک، فاصله بین پیوند کلیه تا تشخیص سل، محل درگیري، پیآمد(Outcome ،(بقا(Survival (گرافت مورد مطالعه قرار گرفتند. یافتهها: شیوع توبرکولوزیس پس از پیوند کلیه در این مطالعه 4/1 درصد بود. میانگین سن بیماران 9/37 سال و متوسط فاصله بین پیوند کلیه تا تشخیص B.T 7/15 ماه بود. شایعترین نوع درگیري، B.T برونکوپولمونري(60 درصد) و پس از آن B.T منتشر(20 درصد) و B.T مفصل هیپ(20 درصد) بود. استنتاج: شیوع B.T در بیماران پیوند کلیه بیشتر از افراد عادي است. تظاهرات آن غیرمعمول است و اثر زیادي روي سلامت فرد و عضو پیوندي دارد، در نظر داشتن بیماري و دقت و توجه کافی در پیگیري درازمدت این بیماران باعث تشخیص ودرمان صحیح و بهموقع و کاهش عوارض بیماري خواهد شد

Enhancing Customer Purchase Intentions through Service Brand Credibility

Purpose – The basic aim of present study was to test the construct of brand credibility and its impact on purchase intentions with moderation effect of brand image in service sector of Pakistan.Design/methodology/approach – for the sake of data collection, A questionnaire was used from the customers of fast food users from the city of Lahore Pakistan.  Regression and correlation analysis along with others were used for data analysis and hypothesis testing.  Findings – Based of the statistical evidences of present study it is found that brand credibility and purchase intentions are positively related whereas brand image moderates this relationship.Practical implications – This study will help survey marketers and mangers to understand the importance of brand credibility for enhancing customer purchase intentions, furthermore it will guide them to incorporate the brand image in crafting different marketing and branding strategies to increase brand royalty.Originality/value – According to researcher, this is a pioneer study to propose the impact of service-brand-credibility and its impact on customer purchase intentions with moderating effect of brand image in the context of Pakistan. Keywords: Brand credibility, Purchase intentions, Brand image, Brands, Pakistan. Paper type: Research pape

A research on the synchronization of two novel chaotic systems based on a nonlinear active control algorithm

The problem of chaos synchronization is to design a coupling between two chaotic systems (master-slave/drive-response systems configuration) such that the chaotic time evaluation becomes ideal and the output of the slave (response) system asymptotically follows the output of the master (drive) system.This paper has addressed the chaos synchronization problem of two chaotic systems using the Nonlinear Control Techniques, based on Lyapunov stability theory.It has been shown that the proposed schemes have outstanding transient performances and that analytically as well as graphically, synchronization is asymptotically globally stable.Suitable feedback controllers are designed to stabilize the closed-loop system at the origin. All simulation results are carried out to corroborate the effectiveness of the proposed methodologies by using Mathematica 9

Role of intra-operative ultrasound in brain tumour surgeries

The use of intra-operative ultrasound remains a largely underutilized option in brain tumour surgeries. The widespread availability of neuronavigation may be the reason why such a useful modality has become less popular even though recent advances in ultrasound technology have greatly improved its utility. The available literature also clearly shows that it offers additional advantages especially when used with neuronavigation. Herein the authors have briefly touched upon the available literature on the role of intraoperative ultrasound in brain tumour surgeries

Detection of Grape Clusters in Images using Convolutional Neural Network

Convolutional Neural Networks and Deep Learning have revolutionized every field since their inception. Agriculture has also been reaping the fruits of developments in mentioned fields. Technology is being revolutionized to increase yield, save water wastage, take care of diseased weeds, and also increase the profit of farmers. Grapes are among the highest profit-yielding and important fruit related to the juice industry. Pakistan being an agricultural country, can widely benefit by cultivating and improving grapes per hectare yield. The biggest challenge in harvesting grapes to date is to detect their cluster successfully; many approaches tend to answer this problem by harvest and sort technique where the foreign objects are separated later from grapes after harvesting them using an automatic harvester. Currently available systems are trained on data that is from developed or grape-producing countries, thus showing data biases when used at any new location thus it gives rise to a need of creating a dataset from scratch to verify the results of research. Grape is available in different sizes, colors, seed sizes, and shapes which makes its detection, through simple Computer vision, even more challenging. This research addresses this issue by bringing the solution to this problem by using CNN and Neural Networks using the newly created dataset from local farms as the other research and the methods used don’t address issues faced locally by the farmers. YOLO has been selected to be trained on the locally collected dataset of grapes

Role of multidisciplinary neuro-oncology tumour boards in cancer management

Multidisciplinary care, including a tumour board discussion for all patients with oncological problems is now considered a standard. However, this is not uniformly implemented within many centres, especially in developing countries. The structure of these tumour boards allows for comprehensive discussion and debate regarding various treatment pathways, with inputs from all specialties. This creates a consensus regarding management for each patient that is unique and holistic. Despite its widespread implementation, published data on neuro-oncology tumour boards is quite limited. The presented literature review briefly discusses the structure, goals, outcomes achieved by multidisciplinary tumour boards within the field of neuro-oncology