1,995 research outputs found

    Effects of customer trust and online experiences in building hospitality brands

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    Customer trust embodies customer beliefs of actually receiving a promised service and manifestations of consumer’s confidences in an exchange parties reliability and integrity. The study is based on the fact as to how trusts criteria affect online purchase especially in regard to booking and buying the accommodations and also that accommodation providers assume that are very essential for consumers to make the online purchase. In total 150 consumers and 80 hotels owners/operators in India were examined. There are enormous discrepancies between consumers and accommodation providers were searched. Like formal guarantee of providers, security concern, refund of price paid delivery time and information about confirmation and they will switch from one brand to other due to promise breakage, less service quality, high price charged. However, these trust criteria were viewed inconsequential by the accommodation providers. It concluded with vast number of suggestions and recommendations for the accommodation providers need to include in their websites and build reputation and strong brands in the hospitality market

    Optimized OFDM Model Using CMA Channel Equalization for BER Evaluation

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    Orthogonal Frequency Division Multiplexing (OFDM) is a type of Multicarrier Modulation (MCM) technique in which entire bandwidth is divided into large number of small sub-carriers and each subcarrier is transmitted parallel to achieve higher data rates. It has various applications like Digital Audio Broadcasting (DAB), Digital Video Broadcasting (DVB) and wireless LAN.OFDM technique is widely used in wireless communication system because of its very high data rate. The performance of FFT based OFDM system using Linear and cyclic channel coding and Constant Modulus Algorithm (CMA) equalizer is simulated using simulink model. The BER saving using the optimized proposed model with both linear and cyclic channel coding along with CMA equalizer is evaluated. The proposed work using cyclic channel coding with QPSK/QAM modulation and CMA as channel equalization under AWGN channel results in 52.6% and 96.3% BER reduction as compared to conventional OFDM model without channel coding, channel equalization and channel fading. So, CMA equalizer is used to enhance the performance of OFDM system

    The origins of polarimetric image contrast between healthy and cancerous human colon tissue

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    International audienceExperimentally measured spectral Mueller matrix images of ex vivo human colon tissue revealed the contrast enhancement between healthy and cancerous zones of colon specimen compared to unpolarized intensity images. Cancer development starts with abnormal changes which being not yet visible macroscopically may alter the polarization of reflected light. We have shown with experiments and modeling that light scattering by small (sub wavelength) scatterers and light absorption (mainly due to blood hemoglobin) are the key factors for observed polarimetric image contrast. These findings can pave the way for the alternative optical technique for the monitoring and early detection of cancer

    Sociodemographic profile of pterygium patients attending Government Medical College, Jammu, Jammu and Kashmir- a study from North India

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    Background: Pterygium is a fibrovascular wing or triangular shaped tissue that develops from the conjunctiva and encroaches on to the cornea.Methods: This prospective observational study was conducted at postgraduate department of Ophthalmology of GMC Jammu, Jammu and Kashmir, India. A total of 90 pterygium patients were selected to analyze various sociodemographic factors especially age, sex, residence, occupation, position etc. on the occurrence of this problem.Results: In the present study, out of 90 pterygium patients, 40% were in the age of 31-40 years followed by 24.44% in 41-50years, 60% were males whereas 66.67% belong to rural areas. The incidence was found to be maximum among farmers 35.56% followed by labourers 20%. The right eye was involved in 55.56% cases while majority 97.78% cases of pterygium were nasal. Progressive pterygium was found in 80% while 20% reported with atrophic pterygium.Conclusions: People who work outdoors are subjected to involuntary U.V. B exposure, dust. Workers must be aware of this and they must take appropriate precautions like wearing protective photochromatic glasses, caps etc

    Emotional and psychological factors in patients prior to cataract surgery

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    Background: Cataract constitutes as the leading cause of blindness. Lack of information about the surgical procedure and results of surgery in cataract patients tend to show high levels of anxiety. Preoperative educational intervention planning is necessary to prepare patients for cataract surgery. The aim of present study was to identify emotional factors related to daily difficulties among patients having cataract.Methods: The present cross-sectional study was conducted over a period of 10months by means of a preformed pilot tested questionnaire on patients who had been screened for cataract in various eye camps and admitted for cataract surgery in the upgraded Department of Ophthalmology, Government Medical College, Jammu. All the questions were explained to participants in their local language for better understanding and those who were willing to participate, were requested to fill the semi-structure pilot tested questionnaire form with informed consent.Results: Around 75% of participants reported daily difficulties due to the ocular conditions, of which walking (79.6%) followed by doing housework (77.8%) were the most frequently reported difficulties. About 75% of the participants reported fearing the surgical procedure. Regarding the level of acceptance of cataract surgery 13.9% reported being very much afraid. With respect to the surgical procedure, doubt as to the outcome was reported by 22.2%. When cataract surgery was compared to other kinds of surgery, 31.9% thought it was better to undergo eye surgery whereas 48.6% had not given any opinion on the matter.Conclusions: Preoperative orientation is necessary in order to ease the suffering caused by surgery and render satisfaction with the treatment. Thus, patient should be prepared for the procedure, information regarding common outcomes and risks of surgery reduces anxiety and improves patient satisfaction following cataract surgery

    Microvascular complications and their prevalence in newly diagnosed type-2 diabetes mellitus

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    Background: A group of metabolic diseases is ‘diabetes’ which has become a major global concern is characterized by high blood sugar. In the world about 347 million people have diabetes. Untreated long standing hyperglycemia leads to microvascular complications in newly diagnosed DM. The objective of the study was to find out prevalence of microvascular complications in newly diagnosed Type-2 diabetes mellitus.Methods: The present cross-sectional study was conducted over a period of 6 months involved 200 patients who were diagnosed with T2DM having ≤6 months duration was conducted in the out-patient department of medicine and ophthalmology at a tertiary care hospital. Informed consent was taken from all the participants who were willing to participate. Detailed history, clinical examination and relevant investigations were done to diagnose microvascular complications.Results: Maximum number of studied subjects i.e. 54% were seen in age group of 41-50 yrs. Males were 56% whereas females comprised 44%. Total of 52% of subjects were from rural background. Nephropathy was the most common microvascular complication present in 54% patients followed by neuropathy in 30% and retinopathy in 8% (NPDR in 7% and PDR in 1%) of patients.Conclusions: From the present study it has been concluded that nephropathy is the most common microvascular complication in newly diagnosed T2DM followed by neuropathy and retinopathy. Authors recommend that education of high-risk group regarding diabetes and its complications by electronic and print media is required so that they seek medical consultation at the earliest. Screening for diabetes at a younger age in view of lower average age at presentation and high prevalence of microvascular complications

    A 5 year retrospective study on epidemiological pattern of ocular trauma

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    Background: One of the delicate structure in the human body is eye and trauma to the eye is essentially a very grave matter. Major cause of preventable monocular blindness and visual impairment in the world is ocular trauma. So any injury to the eye must be deemed to be an ocular emergency and should be handled with utmost care. Despite its public health importance, there is relatively less population based data on the magnitude and risk factors for ocular trauma specially from developing countries. The objective of the study was to find out the epidemiological pattern of ocular trauma.Methods: The present study was 5 year retrospective study of all the patients who reported directly with ocular injury or referred from the casualty to the department of ophthalmology from January 2013 to January 2018. Various parameters like age, sex, mode of injury, type of injury etc. of all patients seen during this period were analyzed.Results: Total of 4192 ocular trauma patients were seen during study period. Maximum number of ocular trauma patients i.e. 1146 were seen in age group of 21-30 years. Males i.e. 3490 outnumbered females in the present study. Road traffic accidents were the most common cause of ocular trauma and accounts for 1760 cases. Most common reported ocular trauma was periorbital oedema/ecchymosis followed by laceration. Surgical intervention was done in 1660 cases whereas 2532 were managed medically.Conclusions: From present study, we may conclude that the maximum number of ocular trauma patients were seen in the age group of 21-30 years with more preponderance in males. Road traffic accidents were the most common cause of ocular trauma. The fact that the lifetime prevalence of ocular trauma is higher than that of eye diseases, which can be decreased by implementing the traffic rules with strict force and imposing heavy fine and license cancellation for drunken driving
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