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Search Results: 1 - 10 of 326196 matches for " S. Srinivasan "
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Vernal ulcer
Srinivasan M,Srinivasan S
Indian Journal of Ophthalmology , 1990,
Abstract: Vernal ulcer is a rare entity not reported in Indian ophthalmic literature. 76 patients in the age group ranging from 3-43 years diagnosed as having vernal conjunctivitis had been referred from general ophthalmology clinic to cornea service of the same institute during 1988-89. Among them 60 were males and 16 were females. 55 of the 76 patients had corneal involvement in the form of vernal keratitis or vernal ulcer. 16 had typical vernal ulcers. vernal ulcer was found more in the palpebral type of vernal conjunctivitis and affects males more frequently. One patient had an inferior vernal ulcer. It also occurred in the bulbar type of spring catarrh.
Maximal subgroups of finite groups
S. Srinivasan
International Journal of Mathematics and Mathematical Sciences , 1990, DOI: 10.1155/s016117129000045x
Abstract: In finite groups maximal subgroups play a very important role. Results in the literature show that if the maximal subgroup has a very small index in the whole group then it influences the structure of the group itself. In this paper we study the case when the index of the maximal subgroups of the groups have a special type of relation with the Fitting subgroup of the group.
Finite p ¢ € 2-nilpotent groups. II
S. Srinivasan
International Journal of Mathematics and Mathematical Sciences , 1987, DOI: 10.1155/s016117128700036x
Abstract: In this paper we continue the study of finite p ¢ € 2-nilpotent groups that was started in the first part of this paper. Here we give a complete characterization of all finite groups that are not p ¢ € 2-nilpotent but all of whose proper subgroups are p ¢ € 2-nilpotent.
Finite p ¢ € 2-nilpotent groups. I
S. Srinivasan
International Journal of Mathematics and Mathematical Sciences , 1987, DOI: 10.1155/s0161171287000176
Abstract: In this paper we consider finite p ¢ € 2-nilpotent groups which is a generalization of finite p-nilpotent groups. This generalization leads us to consider the various special subgroups such as the Frattini subgroup, Fitting subgroup, and the hypercenter in this generalized setting. The paper also considers the conditions under which product of p ¢ € 2-nilpotent groups will be a p ¢ € 2-nilpotent group.
A Novel, Automatic Quality Control Scheme for Real Time Image Transmission
S. Ramachandran,S. Srinivasan
VLSI Design , 2002, DOI: 10.1080/10655140290011131
Abstract: A novel scheme to compute energy on-the-fly and thereby control the quality of the image frames dynamically is presented along with its FPGA implementation. This scheme is suitable for incorporation in image compression systems such as video encoders. In this new scheme, processing is automatically stopped when the desired quality is achieved for the image being processed by using a concept called pruning. Pruning also increases the processing speed by a factor of more than two when compared to the conventional method of processing without pruning. An MPEG-2 encoder implemented using this scheme is capable of processing good quality monochrome and color images of sizes up to 1024 × 768 pixels at the rate of 42 and 28 frames per second, respectively, with a compression ratio of over 17:1. The encoder is also capable of working in the fixed pruning level mode with user programmable features.
A Dynamically Reconfigurable Video Compression Scheme Using FPGAs with Coarse-grain Parallelism
S. Ramachandran,S. Srinivasan
VLSI Design , 2002, DOI: 10.1080/1065514021000012138
Abstract: A dynamically reconfigurable scheme for video encoder to switch among many different applications is presented. The scheme is suitable for FPGA implementation and conforms to JPEG, MPEG-1, MPEG-2, and H.263 standards. The scheme has emerged as an efficient and cost-effective solution for video compression as a result of innovative design using well-partitioned algorithms, highly pipelined architecture and coarse-grain parallelism. The reconfiguration time of the video encoder is less than 320 μs while switching from one standard to another. Although the dynamic reconfiguration scheme is presented for a video encoder, the same design methodology may be applied effectively for any other application.
Influence of Carbohydrates, Mineral Nutrients and Plant Hormones in Alternate Bearing of Black Pepper (Piper nigrum L.)  [PDF]
K. S. Krishnamurthy, S. J. Ankegowda, V. Srinivasan, S. Hamza
American Journal of Plant Sciences (AJPS) , 2013, DOI: 10.4236/ajps.2013.410243
Abstract:

Alternate bearing habit, a common phenomenon prevalent in some of the fruit trees is observed in black pepper variety Panniyur-1 also. In this study, an attempt was made to investigate the role of carbohydrates, mineral nutrients and plant hormones (IAA and zeatin riboside) in alternate bearing in Panniyur-1 variety. The experiment was conducted for three consecutive years at Murugarajendra estate, Madikeri, Karnataka, India (12.42N, 75.73E). Carbohydrate, mineral nutrient and plant hormone (IAA and zeatin riboside) statuses of the leaves as well as fruiting branches (stem) were compared between good fruiting year (on year) and low fruiting year (off year). Results revealed that concentration of mineral nutrients in leaves was more during on year compared to off year while the reverse was true on the stem. Both stem and leaf metabolite levels at harvest were higher in off year compared to on year suggesting that remobilization of nutrients to the developing berries must have been affected during off year, thus leading to accumulation of more nutrients at harvest in off year compared to on year. Leaf had higher concentration of most of mineral nutrients compared to stem. Spraying of 1% solution of complex fertilizer 19:19:19 (percent N:P:K) three times at an interval of 3 weeks from flower primordial initiation to flowering period enhanced the yield to the extent of around 30% during off year. Auxin to cytokinin ratio was 6.6 and 6.1 in on year and 6.3 and 5.7 in off year at flowering and 3 months after flowering respectively, suggesting that this ratio itself may not play a major role in flowering during on and off years, though the ratio was slightly more during on year. Results of the study indicate that efficient utilization of metabolites and nutrients in on year may render vine weak in the subsequent year coupled with poor remobilization into developing berries, which could make it an off

Phrase Based Approach for Document Representation
S. Srinivasan,P. Thambidurai
Asian Journal of Information Technology , 2012,
Abstract: Many systematic approaches have been studied to represent documents. One of the approaches, called Phrase based Technique (PHT) uses phrases to represent documents, aiming at capturing the main phrases present in the document. A set of phrases is represented as an ATN. One of the main problems in this approach is to construct ATN that can capture all possible patterns. This study provides a frame work that is essential for capturing the most of the patterns used in English Language and proposes a way to automatically represent documents. Experiments have been performed on small set of documents and shown that phrases are more effective than keywords in terms of content indicators.
Retrieval of dust aerosols during night: improved assessment of long wave dust radiative forcing over Afro-Asian regions
S. Deepshikha,J. Srinivasan
Annales Geophysicae (ANGEO) , 2010,
Abstract: Several investigators in the past have used the radiance depression (with respect to clear-sky infrared radiance), resulting from the presence of mineral dust aerosols in the atmosphere, as an index of dust aerosol load in the atmosphere during local noon. Here, we have used a modified approach to retrieve dust index during night since assessment of diurnal average infrared dust forcing essentially requires information on dust aerosols during night. For this purpose, we used infrared radiance (10.5–12.5 μm), acquired from the METEOSAT-5 satellite (~ 5 km resolution). We found that the "dust index" algorithm, valid for daytime, will no longer hold during the night because dust is then hotter than the theoretical dust-free reference. Hence we followed a "minimum reference" approach instead of a conventional "maximum reference" approach. A detailed analysis suggests that the maximum dust load occurs during the daytime. Over the desert regions of India and Africa, maximum change in dust load is as much as a factor of four between day and night and factor of two variations are commonly observed. By realizing the consequent impact on long wave dust forcing, sensitivity studies were carried out, which indicate that utilizing day time data for estimating the diurnally averaged long-wave dust radiative forcing results in significant errors (as much as 50 to 70%). Annually and regionally averaged long wave dust radiative forcing (which account for the diurnal variation of dust) at the top of the atmosphere over Afro-Asian region is 2.6 ± 1.8 W m 2, which is 30 to 50% lower than those reported earlier. Our studies indicate that neglecting diurnal variation of dust while assessing its radiative impact leads to an overestimation of dust radiative forcing, which in turn result in underestimation of the radiative impact of anthropogenic aerosols.
Modelling Economic Returns to Plant Variety Protection in the UK
Chittur S. Srinivasan
Bio-based and Applied Economics , 2012,
Abstract: This paper attempts an empirical assessment of the incentive effects of plant variety protection regimes in the generation of crop variety innovations. A duration model of plant variety protection certificates is used to infer the private appropriability of returns from agricultural crop variety innovations in the UK over the period 1965-2000. The results suggest that plant variety protection provides only modest appropriability of returns to innovators of agricultural crop varieties. The val- ue distribution of plant variety protection certificates is highly skewed with a large proportion of innovations providing virtually no returns to innovators. Increasing competition from newer varieties appears to have accelerated the turnover of varie- ties reducing appropriability further. Plant variety protection emerges as a relatively weak instrument of protection.
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