669 research outputs found
ON SIMPLE JORDAN TYPE INEQUALITIES
In this paper, simple rational bounds for the functions f (x)/x or x/f (x) , where f (x) is circular or hyperbolic function are obtained. The inequalities thus established are sufficiently sharp. In particular, some new improved bounds of sinx/x, x/sinhx, x/tanx and tanhx/x are proposed
Stringent bounds for the non-zero Bernoulli numbers
We present new several sharper and sharper lower and upper bounds for the
non-zero Bernoulli numbers using Euler's formula for the Riemann zeta function.
As a particular case, we determine the best possible constants and such that the double inequality holds for Our main results refine the existing bounds of in the literature.Comment: 8 page
Developing climate change dimensions in Malaysia through tourists’ perception
Climate change has long since ceased to be a scientific curiosity and is no
longer just one of many environmental and regulatory concerns. It is a
growing crisis with economic, health and safety, food production, security
and other dimensions. Shifting weather patterns for example, threaten food
production through increased unpredictability of precipitation. Rising sea
levels contaminate coastal freshwater reserves and increase the risk of
catastrophic flooding. Climate change in Malaysia is usually associated with
extreme weather and seasonality. Extreme weather variables include
temperature, rainfall and to a certain extent, wind. Meanwhile, seasonality is
always associated with dry and wet/monsoon season. This paper outlines the
research experience that sets out to determine the dimension of climate
change in Malaysia based on tourists’ perception. The establishment of these
dimensions will provide structured framework for other researches. The
exploratory nature of this research and its comprehensiveness employ both
qualitative and quantitative techniques. The research suggests that there are
five dimensions of climate change, which are humidity, rainfall, sea level,
vegetation and activity. The outputs are expected to establish knowledge on
how climatic dimensions affected the socio-economy of a country especially
in the tourism industry and help policy-makers to strategise future
adaptation planning and responding to the potential threats of climate
change in order to achieve sustainable development
MREAK : Morphological Retina Keypoint Descriptor
A variety of computer vision applications depend on the efficiency of image
matching algorithms used. Various descriptors are designed to detect and match
features in images. Deployment of this algorithms in mobile applications
creates a need for low computation time. Binary descriptors requires less
computation time than float-point based descriptors because of the intensity
comparison between pairs of sample points and comparing after creating a binary
string. In order to decrease time complexity, quality of keypoints matched is
often compromised. We propose a keypoint descriptor named Morphological Retina
Keypoint Descriptor (MREAK) inspired by the function of human pupil which
dilates and constricts responding to the amount of light. By using
morphological operators of opening and closing and modifying the retinal
sampling pattern accordingly, an increase in the number of accurately matched
keypoints is observed. Our results show that matched keypoints are more
efficient than FREAK descriptor and requires low computation time than various
descriptors like SIFT, BRISK and SURF
Semi-Supervised Image-to-Image Translation
Image-to-image translation is a long-established and a difficult problem in
computer vision. In this paper we propose an adversarial based model for
image-to-image translation. The regular deep neural-network based methods
perform the task of image-to-image translation by comparing gram matrices and
using image segmentation which requires human intervention. Our generative
adversarial network based model works on a conditional probability approach.
This approach makes the image translation independent of any local, global and
content or style features. In our approach we use a bidirectional
reconstruction model appended with the affine transform factor that helps in
conserving the content and photorealism as compared to other models. The
advantage of using such an approach is that the image-to-image translation is
semi-supervised, independant of image segmentation and inherits the properties
of generative adversarial networks tending to produce realistic. This method
has proven to produce better results than Multimodal Unsupervised
Image-to-image translation
Correction of idiopathic congenital talipes equinus varus by Ponseti technique in newborn
Background: Clubfoot is one of the commonest congenital anamoly. Though various modalities of treatment are available for this common disorder ranging from surgical release, distraction by external fixator to conservative methods none has proved to be standard for treatment.Methods: A study of 40 cases (62 feets) of clubfoot treatment was done at Post Graduate Institute of Swasthiyog Prathishthan, Miraj by Ponseti technique. Cavus was corrected in first manipulation by first metatarsal lift (supination) followed by forefoot adduction and heel varus in subsequent manipulation until abduction of 60-70 degree is achieved.Results: Post treatment evaluation of results was done. 75% feet had very good results, 20% had good results and 5% had poor results, 11% had relapse of deformity ranging from mild to severe. Two feets required retenotomy before casting, only one feet required RPMR.Conclusions: The Ponseti method of correction of clubfoot is a safe and effective treatment and radically decreases the need for extensive corrective surgeries and achieves functional pain free normal looking plantigrade feet with mobility and required no modified shoes
Retrospective study on socio-demographic factors responsible for acceptance of IUCD among postpartum women
Background: Despite the availability of modern and scientific measures, unacceptably high numbers of maternal deaths still occur in developing countries. Spacing methods of family planning may avoid maternal and infant deaths. The Government of India launched postpartum IUCD (PPIUCD) services in the year 2000; although acceptance of Postpartum IUCD is a real concern.Methods: The retrospective study was conducted in rural government hospital in Maharashtra during 2016 - 2017. We analyzed sociodemographic variables and acceptance of Postpartum IUCD among postpartum women. The sample size was 595 (N=595). The sociodemographic factors studied included age, type of delivery, sex of newborn, socioeconomic status, educational status, etc.Results: The total postpartum women included in the study was 595, out of which, 202 (34%) accepted for postpartum IUCD whereas 393 (66%) rejected for the same. The most common age group was 20-25 years (65%), followed by age group 25-30 years (30%). Primipara was the comment group (45%) and normal vaginal delivery was common (95%). The educational status of both, the postpartum women and their husband, showed statistically significant association with acceptance of postpartum IUCD (p<0.05).Conclusions: The acceptance Postpartum IUCD was low (34%). The women’s and their husband’s educational status is an important factor in acceptance of Postpartum IUCD (p<0.05). Due attention should be given to enhancing educational level of women, also effective counselling both for pregnant woman and her husband during ANC is required
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