Interaction history based answer formulation for question answering

With the rapid growth in information access methodologies, question answering has drawn considerable attention among others. Though question answering has emerged as an interesting new research domain, still it is vastly concentrated on question processing and answer extraction approaches. Latter steps like answer ranking, formulation and presentations are not treated in depth. Weakness we found in this arena is that answers that a particular user has acquired are not considered, when processing new questions. As a result, current systems are not capable of linking two questions such as “When is the Apple founded?” with a previously processed question “When is the Microsoft founded?” generating an answer in the form of “Apple is founded one year later Microsoft founded, in 1976”. In this paper we present an approach towards question answering to devise an answer based on the questions already processed by the system for a particular user which is termed as interaction history for the user. Our approach is a combination of question processing, relation extraction and knowledge representation with inference models. During the process we primarily focus on acquiring knowledge and building up a scalable user model to formulate future answers based on current answers that same user has processed. According to evaluation we carried out based on the TREC resources shows that proposed technology is promising and effective in question answering

RealText-cs - Corpus based domain independent Content Selection model

Content selection is a highly domain dependent task responsible for retrieving relevant information from a knowledge source using a given communicative goal. This paper presents a domain independent content selection model using keywords as communicative goal. We employ DBpedia triple store as our knowledge source and triples are selected based on weights assigned to each triple. The calculation of the weights is carried out through log likelihood distance between a domain corpus and a general reference corpus. The method was evaluated using keywords extracted from QALD dataset and the performance was compared with cross entropy based statistical content selection. The evaluation results showed that the proposed method can perform 32% better than cross entropy based statistical content selection

Antisite Domains in Double Perovskite Ferromagnets: Impact on Magnetotransport and Half-metallicity

Several double perovskite materials of the form A_2BB'O_6 exhibit high ferromagnetic T_c, and significant low field magnetoresistance. They are also a candidate source of spin polarized electrons. The potential usefulness of these materials is, however, frustrated by mislocation of the B and B' ions, which do not organise themselves in the ideal alternating structure. The result is a strong dependence of physical properties on preparative conditions, reducing the magnetization and destroying the half-metallicity. We provide the first results on the impact of spatially correlated antisite disorder, as observed experimentally, on the ferromagnetic double perovskites. The antisite domains suppress magnetism and half-metallicity, as expected, but lead to a dramatic enhancement of the low field magnetoresistance.Comment: 6 pages, pdflatex, EPL styl

Effect of Integrated Nutrient Management on Growth, Flowering Behaviour and Yield of African Marigold (Tagetes erecta L.) Cv. African Giant Double Orange

A field experiment was carried out to study the effect of integrated nutrient management on growth, flowering behaviour and yield of marigold (Tagetes erecta L.) at the main experiment station, Narendra Deva University of Agriculture and Technology, Narendra Nagar (Kumarganj), Faizabad, during 2004 and 2005 in Randomized Block Design. There were thirteen treatments involving two biofertilizers, viz., Azotobacter and phosphorus solubilizing bacteria (PSB) and two levels of nitrogen and phosphorus, viz., (50% and 100%), farm yard manure (FYM) and control (recommended dose of NPK., i.e., 200:100:100 kg/ha). One month old seedlings were transplanted at a spacing of 40 x 30 cm. Results revealed that combined application of Azotobacter and PSB with FYM and 50% recommended dose of nitrogen and phosphorus significantly improved growth, flowering behavior and yield during both years (2004 and 2005). Application of Azotobacter + PSB + FYM @ 30 ha-1 + nitrogen @ 100 ha-1 and phosphorus @ 50 kg/ha was found to be best for growth, flowering behaviour and yield of cv. African Giant Double Orange

Statistical Relation of CMEs Related Geomagnetic Storms With Interplanetary Magnetic Fields

We have studied geomagnetic storm (Dst?-150 nT), associated with Coronal Mass Ejections (CMEs), observed during the period of 2000-2011 with Interplanetary Magnetic Fields. It is observed that coronal mass ejections (CMEs) related geomagnetic storms are found to be association rates of halo and partial halo CMEs  are 18(90%) and 02(10%) respectively. From the further analysis, positive co-relation has been found between magnitude of CMEs related geomagnetic storms and speed of coronal mass ejections (CMEs), with correlation coefficient 0.50. Positive co-relation has been found between magnitude of CMEs related geomagnetic storms and magnitude of change in interplanetary magnetic fields, with correlation coefficient 0.55, positive co-relation has been found between magnitude of CMEs related geomagnetic storms and peak value of change in interplanetary magnetic fields, with correlation coefficient 0.56. Keywords– Geomagnetic Storms, Coronal Mass Ejection and Interplanetary Magnetic Fields

Antikonvulzivno djelovanje Schiffovih baza- derivata isatina

Schiff bases of N-methyl and N-acetyl isatin derivatives with different aryl amines have been synthesized and screened for anticonvulsant activities against maximal electroshock (MES) and subcutaneous metrazole (ScMet). N-methyl-5-bromo-3-(p-chlorophenylimino) isatin 2 exhibited anticonvulsant activity in MES and ScMet with LD50 > 600 mg kg-1, showing better activity than the standard drugs phenytoin, carbamazepine and valproic acid. Thus, compound 2 may be chosen as a prototype for development of new anticonvulsants.Schiffove baze N-metil i N-acetil derivata izatina s različitim aromatskim aminima sintetizirane su i ispitane na sposobnost suzbijanja konvulzija uzrokovanih elektrošokom (MES) i subkutanom primjenom metrazola (ScMet). N-metil-5-bromo-3-(p-klorofenilimino) izatin 2 pokazao je nisku neurotoksičnost i jače antikonvulzivno djelovanje nego standardni antikonvulzivi fenitoin, karbamazepin i valproična kiselina. Zbog toga se spoj 2 može smatrati prototipom za razvoj novih antikonvulziva

Characteristic study, its identification and self-tuned approach to control hydro-power plants

The water time constant and mechanical time constant greatly influences the power and speed oscillations of hydro-turbine-generator unit. This paper discusses the turbine power transients in response to different nature and changes in the gate position. The work presented here analyses the characteristics of hydraulic system with an emphasis on changes in the above time constants. The simulation study is based on mathematical first-, second-, third- and fourth-order transfer function models. The study is further extended to identify discrete time-domain models and their characteristic representation without noise and with noise content of 10 & 20 dB signal-to-noise ratio (SNR). The use of self-tuned control approach in minimising the speed deviation under plant parameter changes and disturbances is also discussed

Chromosome-level assembly of the Atlantic silverside genome reveals extreme levels of sequence diversity and structural genetic variation [preprint]

The levels and distribution of standing genetic variation in a genome can provide a wealth of insights about the adaptive potential, demographic history, and genome structure of a population or species. As structural variants are increasingly associated with traits important for adaptation and speciation, investigating both sequence and structural variation is essential for wholly tapping this potential. Using a combination of shotgun sequencing, 10X Genomics linked reads and proximity-ligation data (Chicago and Hi-C), we produced and annotated a chromosome-level genome assembly for the Atlantic silverside (Menidia menidia) - an established ecological model for studying the phenotypic effects of natural and artificial selection - and examined patterns of genomic variation across two individuals sampled from different populations with divergent local adaptations. Levels of diversity varied substantially across each chromosome, consistently being highly elevated near the ends (presumably near telomeric regions) and dipping to near zero around putative centromeres. Overall, our estimate of the genome-wide average heterozygosity in the Atlantic silverside is the highest reported for a fish, or any vertebrate, to date (1.32-1.76% depending on inference method and sample). Furthermore, we also found extreme levels of structural variation, affecting ~23% of the total genome sequence, including multiple large inversions (\u3e 1 Mb and up to 12.6 Mb) associated with previously identified haploblocks showing strong differentiation between locally adapted populations. These extreme levels of standing genetic variation are likely associated with large effective population sizes and may help explain the remarkable adaptive divergence among populations of the Atlantic silverside