A Study on Hand Gesture Recognition Technique

Hand gesture recognition system can be used for interfacing between computer and human using hand gesture. This work presents a technique for a human computer interface through hand gesture recognition that is able to recognize 25 static gestures from the American Sign Language hand alphabet. The objective of this thesis is to develop an algorithm for recognition of hand gestures with reasonable accuracy. The segmentation of gray scale image of a hand gesture is performed using Otsu thresholding algorithm. Otsu algorithm treats any segmentation problem as classification problem. Total image level is divided into two classes one is hand and other is background. The optimal threshold value is determined by computing the ratio between class variance and total class variance. A morphological filtering method is used to effectively remove background and object noise in the segmented image. Morphological method consists of dilation, erosion, opening, and closing operation. Canny edge detection technique is used to find the boundary of hand gesture in image. A contour tracking algorithm is applied to track the contour in clockwise direction. Contour of a gesture is represented by a Localized Contour Sequence (L.C.S) whose samples are the perpendicular distances between the contour pixels and the chord connecting the end-points of a window centered on the contour pixels. These extracted features are applied as input to classifier. Linear classifier discriminates the images based on dissimilarity between two images. Multi Class Support Vector Machine (MCSVM) and Least Square Support Vector Machine (LSSVM) is also implemented for the classification purpose. Experimental result shows that 94.2% recognition accuracy is achieved by using linear classifier and 98.6% recognition accuracy is achieved using Multiclass Support Vector machine classifier. Least Square Support Vector Machine (LSSVM) classifier is also used for classification purpose and shows 99.2% recognition accuracy

Severe acute malnutrition: seasonal variations in Southern Rajasthan, India

Background: Malnutrition is India’s one of the biggest health care challenge. India has some of the highest rates of child malnutrition. We performed a retrospective study of children admitted in Malnutrition Treatment Centre to find out any seasonal variations in the prevalence of severe acute malnutrition (SAM) in Southern Rajasthan, India.Methods: In this hospital based retrospective study, data were analysed for all children admitted at malnutrition treatment centre of a tertiary level hospital attached to a medical college from April 2014 to March 2016 to study the seasonal variations in the prevalence of SAM.Results: A total of 30,140 children were admitted during the last two years, out of which under five children other than new born were 4,942 in 2014-15 and 5,972 in year 2015-16. Total 1915 SAM children were admitted in our malnutrition treatment centre (MTC) in last 2 years. Among the under five children 840 (17%) children were admitted with SAM in 2014-2015 and 1075 (18%) in year 2015-2016. The number of SAM admission has increased in 2015-16 from the previous year (p0.05).Conclusions: The prevalence of SAM in admitted patients was high as compared to national and state data and this has increased over the year, but there are no month wise seasonal variations in prevalence of SAM in our children representing Southern Rajasthan, India.

Certain expansion formulae of incomplete H-functions associated with Leibniz rule

In this article, we have derived some expansion formulae of the incomplete H-functions by the use of the Leibniz rule for the Riemann-Liouville type derivatives. Further, expansion formulae of the incomplete Meijer’s G-function, incomplete Fox-Wright function and incomplete generalized hypergeometric function are derived as special cases of our main results.Publisher's Versio

PHARMACEUTICO-ANALYTICAL STUDY OF GANDHAKA RASAYANA

Ganghaka Rasayana (GR) is a much more beneficial drug on wide variety of skin disease such as psoriasis which is difficult to completely cure, but manufacturing procedure is generally tough and time consuming. As per classical references there were 88 numbers of Bhavana (levigation) and according to practical experience it was taken near about six month for completion. Therefore total effort has been spent here to establish and revalidate standard operative procedure for preparation of GR to fulfill objectives of this work. Successfulness of pharmaceutical study can be confirmed through assessing results of analytical study. Analytical study provides idea about quality of finish product and safety profiles the same on the basis of scientific background. Hence without analytical study of the drug, the research which was related to medicinal field is incomplete. Among the main and important aims of conducted analytical study are to assess chemical configuration and the physico chemical changes which occurred after Samskara (procedures) in the finish product.Objectives: To developed standard operative procedure for preparation of GR, to find out the cumbersome in the preparation, reduce time factor in preparation considering with safety and efficacy, find out suitable dispensing form and to analyze the GR for safety and purity.Material and methods: GR was prepared as per Yogaratnakara Rasayanadikara with some modifications and analyze it as per parameters of “Protocol of testing ASU medicine†published by Govt. of India Dept. of AYUSH, Ministry of health and family welfare. Physical characters, Physico-chemical analysis, HPTLC, Heavy metals, Microbial load etc parameters were used for analysis of sample of test drug which were prepared by using wet grinder.Results & discussion: Weight of GR after 88 Bhavana was increased accordingly total solid content present in the used liquids for Bhavana. Presence of low amount of moisture content of GR (4.67%) is leading to decrease decomposition and enhance the shelf life and therapeutic value of the same. Low Acid insoluble Ash determines the presence of low adherent dirt as well as sand particles. High % of water & alcohol soluble extractives (62.18% & % 63.12% respectively) confirms the presence of more active principles in the sample. Heavy metal test and Microbial analysis were shown within limit results which refers safety profile of the samples and stability of the drug. Retention factor values in HPTLC confirmed about the multi-polarity index of the compounds and wide range of active principles.

Endoscopic management of retrocalcaneal pain: a prospective observational study

Background: In an effort to reduce morbidity and complications of open surgery, an endoscopic technique was used for the management of the conditions leading to retrocalcaneal pain. With this purpose, the current study was undertaken to evaluate results of endoscopic management of retrocalcaneal pain using American orthopaedic foot and ankle score (AOFAS).Methods: 20 patients (26 heels) in the age group 18-80 years presenting with retrocalcaneal pain not responding to conservative management underwent endoscopic decompression of the retrocalcaneal bursae and excision of bony spurs. Two portals were created, one laterally and one medially, over the posterosuperior portion of the calcaneus to gain access to the retrocalcaneal space. The inflamed bursal tissue was identified and removed, and the prominent bone was resected. The functional outcome was evaluated pre and postoperatively with the AOFAS.Results: 70% patients have retrocalcaneal bursitis, 20% Haglund’s deformity as confirmed on lateral view of ankle X-ray and only 10% of non-insertional tendinosis. Mean operative time was 54.95 minutes. Mean duration of hospital stay was 3.90±0.64 and the mean follow-up was 66 days (range 30-180 days). The average AOFAS score improved from 65.60 points pre-operatively to 96.80 points at final follow-up. There were fifteen excellent results, seven good results, two fair results and two poor results.Conclusions: Endoscopic procedure for retrocalcaneal bursitis and Haglund deformity seemed to be a safe and efficacious option for surgical treatment of retrocalcaneal pain

Role of bone marrow infiltration in management of delayed union of long bones fracture

Background: Usually delayed union of fracture long bones are managed by putting a bone graft at fracture site , but bone grafting have donor site complication like scar, infection ,hernia ,gait disturbance , cosmetic problem, as well as recipient site complication like soft tissue trauma , de-vascularisation of fracture fragment. Bone marrow infiltration is a minimally invasive method done percutaneously. It is easy, safe procedure with no associated complications that may occur in bone grafting.Methods: This prospective study was conducted in the Department of orthopedics, Government Medical College, Kota from June 2011 to November 2013 to evaluate the efficacy of percutaneous bone marrow infiltration in cases of delayed union of long bones. 27 patients included in study with 28 bones, as one patient has given bone marrow injection in two bones (tibia & femur), so the cases included in study counted as 28 cases. The mean age of this study was 38.28 years, ranging from 18 years to 75 years.  All cases were follow up after 4 to 6 weeks and thereafter one month interval. Final follow up was taken when fracture site shows clinical and radiological sign of union.Results: Out of 23 united cases 19 had excellent results and 04 cases had good results. The five cases which fail to unite were taken as poor results.Conclusions: Bone marrow infiltration is a minimally invasive, safe bone graft substitute for delayed union of long bones and have less complications

Soft tissue coverage techniques for management of open fractures of tibia (type IIIB)

Background: Open fractures are surgical emergencies; incidence of open fractures is increasing with more high-energy road traffic accidents. The tibia is exposed to frequent injury because of its location. The need for aggressive debridement, adequate fracture fixation, and early flap coverage in reducing the morbidity cannot be over emphasized.Methods: Treatment of open fracture by immediate debridement and anatomical fracture reduction using external fixator device. Gastrocnemius muscle flap done in upper 1/3 open fractures (type IIIB) with larger defects along with split thickness skin graft (STSG). In middle and lower 1/3 open fractures (type IIIB), fasciocutaneous and soleus muscle flaps done with relatively smaller soft tissue defects and exposed bone with STSG.Results: The study included 15 patients with open tibia fracture Gustillo Anderson type IIIB classified after the initial debridement. Excellent flap takes up was seen in all cases. 11 cases (73.3%) achieved union at the end of 6 months follow-up while 4 cases (26.7%) showed delayed union which required additional procedures like BMI or bone graft.Conclusions: Soft tissue coverage techniques like fascicutaneous flap, gastrocnemius and soleus muscle flap had a definitive role in the management of open fractures of tibia (type IIIB)

Acute stroke as the initial presentation of Takayasu arteritis: Rare but not infrequent…

Takayasu arteritis is an idiopathic, autoimmune, large vessel vasculitis, mainly affecting the young adults. Its exact etiopathogenesis is not known and it has varied clinical presentations. Acute stroke as initial presentation of Takayasu arteritis is uncommonly reported. Herein we present a case of a 24-year-old female who came to our hospital emergency with sudden onset of weakness of left half of the body of one-day duration. Takayasu arteritis complicated with acute ischemic stroke was diagnosed on the basis of CT angiography findings. The patient was managed accordingly and discharged in a stable condition. Relevant literature is also reviewed. Although considered to be a rare disease, Takayasu arteritis is not infrequent. A high index of suspicion is required for early diagnosis, so as to reduce the significant morbidity associated with the disease