Reactive Power Compensation in a Stand-alone Wind-diesel-tidal Hybrid System by a Fuzzy Logic Based UPFC

AbstractThis paper gives a novel idea of application of fuzzy based UPFC controller for Reactive Power compensation in an isolated hybrid system and also discusses the improvement of stability in the hybrid system. For detailed analysis a small signal linear model of the hybrid wind- Diesel- tidal model is considered with different loading conditions. The reactive power compensation and stability analysis have been thoroughly analysed by a UPFC Controller. A fuzzy logic controller is designed to tune the parameters of UPFC controller. Simulation result shows that the system parameters attend steady state value with lesser time and complexities

Large expert-curated database for benchmarking document similarity detection in biomedical literature search

Document recommendation systems for locating relevant literature have mostly relied on methods developed a decade ago. This is largely due to the lack of a large offline gold-standard benchmark of relevant documents that cover a variety of research fields such that newly developed literature search techniques can be compared, improved and translated into practice. To overcome this bottleneck, we have established the RElevant LIterature SearcH consortium consisting of more than 1500 scientists from 84 countries, who have collectively annotated the relevance of over 180 000 PubMed-listed articles with regard to their respective seed (input) article/s. The majority of annotations were contributed by highly experienced, original authors of the seed articles. The collected data cover 76% of all unique PubMed Medical Subject Headings descriptors. No systematic biases were observed across different experience levels, research fields or time spent on annotations. More importantly, annotations of the same document pairs contributed by different scientists were highly concordant. We further show that the three representative baseline methods used to generate recommended articles for evaluation (Okapi Best Matching 25, Term Frequency-Inverse Document Frequency and PubMed Related Articles) had similar overall performances. Additionally, we found that these methods each tend to produce distinct collections of recommended articles, suggesting that a hybrid method may be required to completely capture all relevant articles. The established database server located at https://relishdb.ict.griffith.edu.au is freely available for the downloading of annotation data and the blind testing of new methods. We expect that this benchmark will be useful for stimulating the development of new powerful techniques for title and title/abstract-based search engines for relevant articles in biomedical research.Peer reviewe

Cryptococcus laurentii fungemia in a low birth weight preterm neonate: India

In the last few years, Cryptococcus laurentii infections have increased, particularly in immunocompromised patients. Here we report the first case of C. laurentii fungemia in low birth weight preterm infant from India. A preterm neonate was admitted for feeding intolerance and respiratory distress. Blood culture ascertained the causative organism as C. laurentii. The isolated strain was found susceptible to amphotericin B and the patient recovered following the administration of amphotericin B (5 mg/kg body weight) for 8 days. Keywords: Cryptococcus laurentii, Neonate, Fungemia, Amphotericin

A case for heterogeneous on-chip interconnects for CMPs

Network-on-chip (NoC) has become a critical shared resource in the emerging Chip Multiprocessor (CMP) era. Most prior NoC designs have used the same type of router across the entire net-work. While this homogeneous network design eases the burden on a network designer, partitioning the resources equally among all routers across the network does not lead to optimal resource us-age, and hence, affects the performance-power envelope. In this work, we propose to apportion the resources in an NoC to leverage the non-uniformity in network resource demand. Our proposal in-cludes partitioning the network resources, specifically buffers and links, in an optimal manner. This approach results in redistributing resources such that routers that require more resources are allocated more buffers and wider links compared to routers demanding fewer resources. This results in a novel heterogeneous network, called HeteroNoC, which is composed of two types of routers – small power efficient routers, and big high performance routers. We eval-uate a number of heterogeneous network configurations, composed of big and small routers, and show that giving more resources to routers along the diagonals in a mesh network provides maximum benefits in terms of performance and power. We also show the po-tential benefits of the HeteroNoC design by co-evaluating it with memory-controllers and configuring it with an asymmetric CMP consisting of heterogeneous cores

Organization of amphiphiles Part-X: Studies on the interaction between polyoxyethylated (30) octylphenol and cetyltrimethylammonium bromide in aqueous solution

The solution behavior of the mixture of cetyltrimethylammonium bromide (CTAB) and polyoxyethylene (30) octylphenol (OP-30) has been investigated by measuring the conductance, fluorescence intensity, surface tension and absorbance of the surfactant mixtures. A strong interaction between the two surfactants is indicated from each of the measurements. The critical micelle concentration of CTAB is found to increase with increase in the amount of OP-30 in the mixture. This delaying in micellization of CTAB has been attributed to the diminution of its effective hydrophobicity due to interaction with monomers or micelles of OP-30. Below CMC of OP-30, the monomeric concentration of CTAB decreases due to the formation of a hydrophobic complex between OP-30 and CTAB. Above CMC of OP-30, CTAB monomers get solubilized into micellar core of OP-30 in 1:1 stoichiometric ratio. Micropolarity and the aggregation numbers of the mixed systems have been determined from fluorescence studies. The thermodynamics of micelle formation of CTAB coupled with fluorescence studies of the mixtures indicates that the complex grows in size with increase of OP-30 concentration till the micelle of latter is formed at higher concentrations. The treatment of theoretical model to the interaction of OP-30 and CTAB yields a positive interaction parameter showing antagonism behavior. A schematic model of interaction of OP-30 with CTAB below and above its CMC has been suggested

Unorganized Enterprises and Rural-Urban Migration in India: The Case of the Cycle Rickshaw Sector in Delhi

In 2010/11, we conducted a survey of cycle rickshaw pullers and rickshaw owners located throughout Delhi, India. We drew a sample of 132 rickshaw owners (called Thekedars) and a representative sample of 1,320 rickshaw pullers. The survey results show that most rickshaw pullers in Delhi are short-term, temporary migrants. Most rickshaw pullers are poorly educated. The majority migrated from villages in the states of Bihar and Uttar Pradesh. Social networks that extend from places of origin to final destinations facilitate migration. More than 90% of rickshaw pullers operate rental rickshaws owned by Thekedars. Rickshaw pulling involves hard physical labor. On average, a rickshaw puller works 11 hours per day, over 27 days per month. We estimate the average daily earning to be Rs. 260. A typical migrant rickshaw puller may save more than Rs. 2,000 per month. He may send these funds to his village home. This is the migrant rickshaw pullers’ contribution to rural poverty reduction. Thekedars provide the fulcrum upon which the whole cycle rickshaw transportation system of Delhi turns.In addition to the rental of cycle rickshaws to migrant rickshaw pullers, Thekedars manage the administrative and legal aspects of their rickshaw rental business throughout the year. Their occupational history shows that many of them became a Thekedar from low beginnings, including rickshaw pulling and rickshaw repair jobs. On average, a Thekedar owns 56 rickshaws, approximately two-thirds of which are rented on a daily basis. Pullers pay a fixed rental fee per day at an average rate of Rs. 34. Net of business expenditures, monthly rickshaw rental income per Thekedar is estimated at approximately Rs. 5,600 for small and medium Thekedars and Rs. 41,000 for large Thekedars. The internal rate of return on investment over 5-6 years of the working life of a rickshaw is estimated to range between 18% and 62% per year. Currently, the rules and regulations on t he cycle rickshaw sector in Delhi are based on the principal of the one-rickshaw, one-owner, one-driver, one-license policy. However, this policy does not reflect the real-life situations we encountered in our survey. We recommend that Thekedars be endowed with legal entity status. This would result in the healthy development of urban transport in Delhi.基盤研究(S) = Grants-in-Aid for Scientific Research (S

Entrepreneurship in Micro and Small Enterprises: Empirical Findings from a Baseline Study in Northeastern Areas of Delhi, India

To deepen our understanding of the urban informal sector and small enterprises in developing countries, we conducted a baseline study of micro and small entrepreneurs in northeastern areas of Delhi, India. The questionnaire-based survey was implemented during November-December 2014, in which 506 entrepreneurs were surveyed who ran enterprises in the manufacturing or service sector. The sample was drawn from a business directory and all fell in the category of micro or small enterprises as defined in the Micro, Small and Medium Enterprises Development Act of 2006. In this paper, we present details of the baseline survey implemented under this project and describe the key variables collected. Out of 506 sample entrepreneurs, 97% were owned by single individuals, and 46% were unregistered with the government. In addition to the standard list of questions, some questions on trust were also included in the General Social Survey style. The trust level towards relatives and friends, neighbors, and business buyers/sellers was found to be significantly higher than the trust level toward government officials, the police, and law officers.21 p

Solid Lipid Nanoparticles: Emerging Colloidal Nano Drug Delivery Systems

Solid lipid nanoparticles (SLNs) are nanocarriers developed as substitute colloidal drug delivery systems parallel to liposomes, lipid emulsions, polymeric nanoparticles, and so forth. Owing to their unique size dependent properties and ability to incorporate drugs, SLNs present an opportunity to build up new therapeutic prototypes for drug delivery and targeting. SLNs hold great potential for attaining the goal of targeted and controlled drug delivery, which currently draws the interest of researchers worldwide. The present review sheds light on different aspects of SLNs including fabrication and characterization techniques, formulation variables, routes of administration, surface modifications, toxicity, and biomedical applications