100 research outputs found
An analysis of compulsive buying behavior: Questioning the role of marketing campaigns
This study defines the concept of compulsive buying behavior on the basis of available research as a buying behavior that is continuous and repetitive and it is stimulated in result of some negative feelings or events. Then it highlights the significant predictors of compulsive buying behavior discussed in literature by different authors. Study also incorporates the role of marketing practices play in compulsive purchasing of a consumer. This study adopts a qualitative content analysis approach. Only journal articles are included in analysis. Study questions the role of marketing campaigns polices and strategies in promotion of compulsive buying behavior. This study underlay’s some reservations on the ethicality of the marketing campaigns. Future recommendations are also discussed in the end. Key Words: Compulsive Buying Behavior, Marketing Campaigns, Ethicality
Airfoil's Aerodynamic Coefficients Prediction using Artificial Neural Network
Figuring out the right airfoil is a crucial step in the preliminary stage of
any aerial vehicle design, as its shape directly affects the overall
aerodynamic characteristics of the aircraft or rotorcraft. Besides being a
measure of performance, the aerodynamic coefficients are used to design
additional subsystems such as a flight control system, or predict complex
dynamic phenomena such as aeroelastic instability. The coefficients in question
can either be obtained experimentally through wind tunnel testing or, depending
upon the accuracy requirements, by numerically simulating the underlying
fundamental equations of fluid dynamics. In this paper, the feasibility of
applying Artificial Neural Networks (ANNs) to estimate the aerodynamic
coefficients of differing airfoil geometries at varying Angle of Attack, Mach
and Reynolds number is investigated. The ANNs are computational entities that
have the ability to learn highly nonlinear spatial and temporal patterns.
Therefore, they are increasingly being used to approximate complex real-world
phenomenon. However, despite their significant breakthrough in the past few
years, ANNs' spreading in the field of Computational Fluid Dynamics (CFD) is
fairly recent, and many applications within this field remain unexplored. This
study thus compares different network architectures and training datasets in an
attempt to gain insight as to how the network perceives the given airfoil
geometries, while producing an acceptable neuronal model for faster and easier
prediction of lift, drag and moment coefficients in steady state,
incompressible flow regimes. This data-driven method produces sufficiently
accurate results, with the added benefit of saving high computational and
experimental costs
Comparing Symptoms of Withdrawal, Rapid Detoxi-fication and Detoxification with Clonidine in Drug Dependent Patients
Abstract
Considering the fear of drug addicts from hangover symptoms and the costs of withdrawal treatment and their importance in deciding to withdraw, it is helpful to identify various ways of withdrawal and their effects. This study investigated the withdrawal symptoms of two methods of detoxification with clonidine and rapid detoxification of clonidine with naltrexone.
This was a clinical trial study. Patients referred to Shahid Beheshti hospital for narcotic addiction treatment were randomly divided into two groups. Group matching was done based on entry and excluding criteria. Data were collected using a demographic questionnaire including questions on the drug abuse and the consumption method, and a questionnaire on the symptoms of opioid withdrawal.
Restlessness, vomiting, feeling sick and significant decrease of diastolic blood pressure was higher in rapid detoxification method group. However, considering background variables, Spearman correlation coefficient showed significant relationship just for lacrimation. Temptation for drug consumption was lower for heavy abusers in rapid detoxification method and in general, those who had higher amount of consumption and were treated by rapid detoxification, experienced less temptation for consumption.
Rapid detoxification can be the first level treatment for heavy abusers, because it reduces the temptation for drug consumption and has shorter hospitalization and, as a result, has lower cost
Comparing Symptoms of Withdrawal, Rapid Detoxi-fication and Detoxification with Clonidine in Drug Dependent Patients
Abstract Background: Considering the fear of drug addicts from hangover symptoms and the costs of withdrawal treatment and their importance in deciding to withdraw, it is helpful to identify various ways of withdrawal and their effects. This study investigated the withdrawal symptoms of two methods of detoxification with clonidine and rapid detoxification of clonidine with naltrexone. Methods: This was a clinical trial study. Patients referred to Shahid Beheshti hospital for narcotic addiction treatment were randomly divided into two groups. Group matching was done based on entry and excluding criteria. Data were collected using a demographic questionnaire including questions on the drug abuse and the consumption method, and a questionnaire on the symptoms of opioid withdrawal. Findings: Restlessness, vomiting, feeling sick and significant decrease of diastolic blood pressure was higher in rapid detoxification method group. However, considering background variables, Spearman correlation coefficient showed significant relationship just for lacrimation. Temptation for drug consumption was lower for heavy abusers in rapid detoxification method and in general, those who had higher amount of consumption and were treated by rapid detoxification, experienced less temptation for consumption. Conclusion: Rapid detoxification can be the first level treatment for heavy abusers, because it reduces the temptation for drug consumption and has shorter hospitalization and, as a result, has lower cost. Keyword: Drug abuse, Rapid detoxification, Clonidine detoxification, Withdrawal symptoms
THERAPEUTIC PROPERTIES OF CAPSAICIN: A MEDICINALLY IMPORTANT BIO-ACTIVE CONSTITUENT OF CHILLI PEPPER
Plants are the source of numerous pharmaceutically important compounds that have been employed to cure various human ailments since ancient times. With the assistance of modern chemistry and materials science, such pharmaceutically important compounds have been identified and isolated to produce new drugs. Alkaloids are one of the most significant classes of naturally occurring secondary-metabolites, which are synthesized and widely distributed in various parts of plants. They regulate various metabolic activities and induce physiological responses in the human body. Capsaicin is a naturally occurring alkaloid found in many species of peppers and is attributed to their spicy nature and pungent flavor. This alkaloid is a member of the Capsaicinoids group, which includes capsaicin, homocapsaicin, homodihydrocapsaicin, dihydrocapsaicin, and nordihydrocapsaicin. Capsaicin has a wide range of therapeutic potential against various human ailments. In this article, we provide a comprehensive overview of the capsaicin molecule as well as an examination of its medicinal properties in a variety of human disorders, including pain, various types of cancer, ulcers, diabetes, obesity, inflammation, cardiovascular diseases, and neurodegenerative diseases
Melasma and its association with different types of nevi in women: A case-control study
<p>Abstract</p> <p>Background</p> <p>Very little is known about possible association of nevi and melasma. The study objective was to determine if there is an association between melasma and existence of different kinds of nevi.</p> <p>Methods</p> <p>In a case-control study, 120 female melasma patients referred to dermatology clinic of Ardabil and 120 patients referred to other specialty clinics who lacked melasma were enrolled after matching for age. Number of different types of nevi including lentigines and melanocytic nevi were compared between case and control group patients. Data were entered into the computer and analyzed by SPSS 13 statistical software.</p> <p>Results</p> <p>Mean number of lentigines was 25.5 in melasma group compared to 8 in control group(P < 0.01). Mean number of melanocytic nevi was 13.2 in cases compared to 2.8 in control group(P < 0.001). Multivariate analysis showed that existence of freckles, lentigines and more than three melanocytic nevi were positively related to developing melasma. The chance of melasma increased up to 23 times for patients having more than three melanocytic nevi. Congenital nevi were observed among 10% both in case and control groups. Campbell de morgan angiomas were seen among 26 patients(21.8%) in case group compared to 6 patients(5%) in control group.</p> <p>Conclusion</p> <p>Existence of lentigines and melanocytic nevi increases chance of having melasma</p
Study protocol of DIVERGE, the first genetic epidemiological study of major depressive disorder in Pakistan
INTRODUCTION: Globally, 80% of the burdenof major depressive disorder (MDD) pertains to low- and middle-income countries. Research into genetic and environmental risk factors has the potential to uncover disease mechanisms that may contribute to better diagnosis and treatment of mental illness, yet has so far been largely limited to participants with European ancestry from high-income countries. The DIVERGE study was established to help overcome this gap and investigate genetic and environmental risk factors for MDD in Pakistan. METHODS: DIVERGE aims to enrol 9000 cases and 4000 controls in hospitals across the country. Here, we provide the rationale for DIVERGE, describe the study protocol and characterise the sample using data from the first 500cases. Exploratory data analysis is performed to describe demographics, socioeconomic status, environmental risk factors, family history of mental illness and psychopathology. RESULTS AND DISCUSSION: Many participants had severe depression with 74% of patients who experienced multiple depressive episodes. It was a common practice to seek help for mental health struggles from faith healers and religious leaders. Socioeconomic variables reflected the local context with a large proportion of women not having access to any education and the majority of participants reporting no savings. CONCLUSION: DIVERGE is a carefully designed case-control study of MDD in Pakistan that captures diverse risk factors. As the largest genetic study in Pakistan, DIVERGE helps address the severe underrepresentation of people from South Asian countries in genetic as well as psychiatric research
Impaired IL-23-dependent induction of IFN-gamma underlies mycobacterial disease in patients with inherited TYK2 deficiency
Human cells homozygous for rare loss-of-expression (LOE) TYK2 alleles have impaired, but not abolished, cellular responses to IFN-alpha/beta (underlying viral diseases in the patients) and to IL-12 and IL-23 (underlying mycobacterial diseases). Cells homozygous for the common P1104A TYK2 allele have selectively impaired responses to IL-23 (underlying isolated mycobacterial disease). We report three new forms of TYK2 deficiency in six patients from five families homozygous for rare TYK2 alleles (R864C, G996R, G634E, or G1010D) or compound heterozygous for P1104A and a rare allele (A928V). All these missense alleles encode detectable proteins. The R864C and G1010D alleles are hypomorphic and loss-of-function (LOF), respectively, across signaling pathways. By contrast, hypomorphic G996R, G634E, and A928V mutations selectively impair responses to IL-23, like P1104A. Impairment of the IL-23-dependent induction of IFN-gamma is the only mechanism of mycobacterial disease common to patients with complete TYK2 deficiency with or without TYK2 expression, partial TYK2 deficiency across signaling pathways, or rare or common partial TYK2 deficiency specific for IL-23 signaling.ANRS Nord-Sud ; CIBSS ; CODI ; Comité para el Desarrollo de la Investigación ; Fulbright Future Scholarshi
Youth Culturally adapted Manual Assisted Problem Solving Training (YCMAP) in Pakistani adolescent with a history of self-harm: protocol for multicentre clinical and cost-effectiveness randomised controlled trial
Introduction: Suicide is a global health concern. Sociocultural factors have an impact on self-harm and suicide rates. In Pakistan, both self-harm and suicide are considered as criminal offence’s and are condemned on both religious and social grounds. The proposed intervention ‘Youth Culturally Adapted Manual Assisted Problem Solving Training (YCMAP)’ is based on principles of problem-solving and cognitive–behavioural therapy. YCMAP is a brief, culturally relevant, scalable intervention that can be implemented in routine clinical practice if found to be effective. Method and analysis: A multicentre rater blind randomised controlled trial to evaluate the clinical and cost-effectiveness of YCMAP including a sample of 652 participants, aged 12–18 years, presenting to general physicians/clinicians, emergency room after self harm or self referrals. We will test the effectiveness of 8–10 individual sessions of YCMAP delivered over 3 months compared with treatment as usual. Primary outcome measure is repetition of self-harm at 12 months. The seconday outcomes include reduction in suicidal ideation, hopelessness and distress and improvement in health related quality of life. Assessments will be completed at baseline, 3, 6, 9 and 12 months postrandomisation. The nested qualitative component will explore perceptions about management of self-harm and suicide prevention among adolescents and investigate participants’ experiences with YCMAP. The study will be guided by the theory of change approach to ensure that the whole trial is centred around needs of the end beneficiaries as key stakeholders in the process. Ethics and dissemination: Ethics approval has been obtained from the Ethics Committee of University of Manchester, the National Bioethics Committee in Pakistan. The findings of this study will be disseminated through community workshops, social media, conference presentations and peer-reviewed journals. Trial registration number: NCT04131179
Study protocol of DIVERGE, the first genetic epidemiological study of major depressive disorder in Pakistan.
INTRODUCTION: Globally, 80% of the burdenof major depressive disorder (MDD) pertains to low- and middle-income countries. Research into genetic and environmental risk factors has the potential to uncover disease mechanisms that may contribute to better diagnosis and treatment of mental illness, yet has so far been largely limited to participants with European ancestry from high-income countries. The DIVERGE study was established to help overcome this gap and investigate genetic and environmental risk factors for MDD in Pakistan. METHODS: DIVERGE aims to enrol 9000 cases and 4000 controls in hospitals across the country. Here, we provide the rationale for DIVERGE, describe the study protocol and characterise the sample using data from the first 500 cases. Exploratory data analysis is performed to describe demographics, socioeconomic status, environmental risk factors, family history of mental illness and psychopathology. RESULTS AND DISCUSSION: Many participants had severe depression with 74% of patients who experienced multiple depressive episodes. It was a common practice to seek help for mental health struggles from faith healers and religious leaders. Socioeconomic variables reflected the local context with a large proportion of women not having access to any education and the majority of participants reporting no savings. CONCLUSION: DIVERGE is a carefully designed case-control study of MDD in Pakistan that captures diverse risk factors. As the largest genetic study in Pakistan, DIVERGE helps address the severe underrepresentation of people from South Asian countries in genetic as well as psychiatric research
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