727 research outputs found

    A survey on utilization of data mining approaches for dermatological (skin) diseases prediction

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    Due to recent technology advances, large volumes of medical data is obtained. These data contain valuable information. Therefore data mining techniques can be used to extract useful patterns. This paper is intended to introduce data mining and its various techniques and a survey of the available literature on medical data mining. We emphasize mainly on the application of data mining on skin diseases. A categorization has been provided based on the different data mining techniques. The utility of the various data mining methodologies is highlighted. Generally association mining is suitable for extracting rules. It has been used especially in cancer diagnosis. Classification is a robust method in medical mining. In this paper, we have summarized the different uses of classification in dermatology. It is one of the most important methods for diagnosis of erythemato-squamous diseases. There are different methods like Neural Networks, Genetic Algorithms and fuzzy classifiaction in this topic. Clustering is a useful method in medical images mining. The purpose of clustering techniques is to find a structure for the given data by finding similarities between data according to data characteristics. Clustering has some applications in dermatology. Besides introducing different mining methods, we have investigated some challenges which exist in mining skin data

    Compare the effect of Consumption CoQ10 Supplement on aerobic power, anaerobic and Muscle soreness in athletes and non athletes

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    زمینه و هدف: کوآنزیم Q10 یک ماده شبه ویتامین محلول در چربی است که حامل ضروری الکترون در میتوکندری می باشد و در تولید انرژی و فعالیت ضد اکسیدانی، نقش مهمی بر عهده دارد. هدف این مطالعه پژوهشی نیمه تجربی، مقایسه اثر مکمل کوآنزیم Q10 بر توان هوازی، بی هوازی و برخی از شاخص های منتخب کوفتگی عضلانی تأخیری پسران ورزشکار و غیر ورزشکار بود. روش بررسی: 60 پسر دانش آموز داوطلب، به روش نمونه در دسترس انتخاب که از بین آن ها و به طور تصادفی 20 نفر با میانگین سن، قد و وزن به ترتیب (80/0±30/16 سال، 6±172 سانتی متر، 55/7±76/62 کیلوگرم) انتخاب که در دو گروه ورزشکار (10 =n) و غیر ورزشکار (10 =n) طبقه بندی شدند. از هر دو گروه 4 مرتبه خونگیری (هر بار 5 سی سی مایع از ورید پیش آرنجی) طی دو مرحله (قبل و بعد از مکمل دهی) به عمل آمد که سطح پایه و تغییرات شاخص های کوفتگی تأخیری (LDH و CK)، با کیت آزمایشگاهی پارس آزمون و با دستگاه اتوآنالایزر AT- آلفا کلاستیک مورد ارزیابی قرار گرفت. قراردادهای ورزشی پژوهش، بروس (با استفاده از نوارگردان، جهت ارزیابی VO2max) و فالکنر (با استفاده از نوارگردان- 9/12 V= کیلومتر بر ساعت و 20 g=، جهت ارزیابی توان بی هوازی) بود. ضریب پایایی آزمون بروس و فالکنر به ترتیب در حدود 95/0 تا 99/0 و 76/0 تا 91/0 است. جهت بررسی تفاوت در مراحل مختلف نمونه گیری، تفاوت های درون گروهی و برون گروهی، از آزمون های آنالیز تحلیل واریانس (ANOVA)، SPSS، تی وابسته و تی مستقل در سطح معنی داری 05/0≥P استفاده شد. یافته ها: یافته های پژوهش نشان داد که مصرف کوتاه مدت مکمل CoQ10 منجر به عدم تغییر معنی دار CK (19/0P=)، LDH (12/0P=)، توان بی هوازی (17/0P=) و توان هوازی (43/0P=) هر دو گروه ورزشکار و غیر ورزشکار شد. نتیجه گیری: به طور کلی نتایج بیانگر این بودند که سطح آمادگی بدنی (مقایسه ورزشکار یا غیر ورزشکار بودن)، تأثیری در اثر مکمل کوآنزیم Q10 بر توان هوازی، بی هوازی و کوفتگی عضلانی نداشت و هر دو گروه به یک اندازه از مکمل بهره بردند

    A Novel Demand Response Management Model to Reduce Smart Grid Costs

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    DRM means leveling demand curve based on electricity prices. Indeed, using variable price rates, electricity consumers are encouraged to use electricity in periods with cheap electricity price ranges. Therefore, total system cost would decrease efficiently. Motivations: To model dynamics between electricity end-users and utility companies. To present a model with simple implementation on smart households. To reduce electricity production costs and to maximize social welfare.Electrical and Computer Engineering, Department o

    Designing a customized clinical practice guideline regarding antibiotic prophylaxis for Iranian general dentists.

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    BACKGROUND: Clinical practice guidelines produced by developed countries seemed to be not completely feasible for developing countries due to their different local context. In this study, we designed a customized guideline about antibiotic prophylaxis before dental procedures for Iranian general dentists. METHODS: This study was conducted of two parts, including a qualitative part and a cross-sectional analytic part. A multidisciplinary team searched for related guidelines and other documents, selected the most updated and high quality ones, customized their recommendations based on available antibiotics in Iran, prepared a draft adapted guideline and summarized its recommendations in 3 flowcharts. An expert panel (20 specialists of four Iranian dental universities) participated in a consensus process, afterwards to determine the relevance and clarity of the flowcharts and their items. Then the Content Validity Indices (CVIs) were calculated and any items with CVI higher than 0.79 remained. RESULTS: The adapted recommendations were summarized in flowcharts A to C. Two separate groups of patients who need antibiotic prophylaxis were presented in flowchart A; including those with high risk for distant-site infection (infective endocarditis and prosthetic joint infection) and those at risk for poor healing and orofacial infection (due to impaired immunologic function). Flowcharts B and C described antibiotic regimen and also the dental procedures where antibiotic prophylaxis was needed for mentioned groups. The content validity indices and the percentages of agreement between the expert panel members were considerably high. CONCLUSIONS: A localized, clear and straight forward guideline that addresses all groups of dental patients who need antibiotic prophylaxis has been produced for Iranian general dentists

    A Systematic Literature Review: Workplace Violence Against Emergency Medical Services Personnel

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    Context: In spite of the high prevalence and consequences of much workplace violence against emergency medical services personnel, this phenomenon has been given insufficient attention. A systematic review can aid the development of guidelines to reduce violence. Objectives: The research question addressed by this paper is, “What are the characteristics and findings of studies on workplace violence against emergency medical services personnel”? Data Sources: A systematic literature review was conducted using online databases (PubMed, Scopus, Google Scholar, and Magiran) with the help of experienced librarians. Study Selection: Inclusion criteria comprised studies in the English or Persian language and researcher’s access to the full text. There was no limit to the entry of the study design. Exclusion criteria included lack of access to the full text of the article, studies published in unreliable journals or conferences, and studies in which the results were shared with other medical or relief groups and there was no possibility of breaking down the results. Data Extraction: A “Data extraction form” was designed by the researchers based on the goals of the study that included the title and author(s), study method (type, place of study, sample size, sampling method, and data collection/analysis tool), printing location, information related to the frequency of types of violence, characteristics of victims /perpetrators, and related factors. Results: The papers reviewed utilized a variety of locations and environments, methods, and instrument samplings. The majority of the studies were performed using the quantitative method. No intervention study was found. Most studies focused on the prevalence of violence, and their results indicated that exposure to violence was high. The results are presented in six major themes. Conclusions: Workplace violence and injuries incurred from it are extensive throughout the world. The important causes of violence include the shortage of training programs dealing with violence, lack of violence management protocols, and delays in response times. Therefore, afterthought and resolve are more crucial than ever. Workplace violence reduction strategies and suggestions for future studies are also discussed

    Agricultural land conversion in Northwest Iran

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    Agricultural Land Conversion (ALC) has been introduced as one of the most important factors affecting ecosystem. This type of conversion has led to several challenges in agricultural development and human life. Monitoring ALC plays a crucial role when dealing with such challenges. The main objective of this study was to monitor the trend of ALC in the Qazvin province located in Northwest Iran from 1990 to 2010 using remote sensing data. The results showed that 44,845 ha of agricultural lands (3.03% of the total agricultural lands of the province) were converted to non-agricultural lands, of which, 32,033 and 10,243 ha (2.16% and 0.69% of total agricultural lands of the province), were respectively transformed to saline lands and urban areas and infrastructures. Our projection for 2030 shows that among other uses, the conversion of agricultural lands to the saline lands and urban areas and infrastructures will stay most likely. However, the conversion probability for irrigated and orchard lands to urban areas and infrastructures will be more than the saline lands while the conversion probability for dry and rangelands to the saline lands will be more than urban areas and infrastructures

    Perfect transfer of m-qubit GHZ states

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    By using some techniques such as spectral distribution and stratification associated with the graphs, employed in [1,2] for the purpose of Perfect state transfer (PST) of a single qubit over antipodes of distance-regular spin networks and PST of a dd-level quantum state over antipodes of pseudo-distance regular networks, PST of an m-qubit GHZ state is investigated. To do so, we employ the particular distance-regular networks (called Johnson networks) J(2m,m) to transfer an m-qubit GHZ state initially prepared in an arbitrary node of the network (called the reference node) to the corresponding antipode, perfectly. Keywords: Perfect state transferenc, GHZ states, Johnson network, Stratification, Spectral distribution PACs Index: 01.55.+b, 02.10.YnComment: 17 page

    Potential of Iranian wild barley (Hordeum vulgare ssp. spontaneum) in breeding for drought tolerance

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    The vast genetic resources of wild barley (Hordeum vulgare ssp. spontaneum, hereafter WB) may hold unique assets for improving barley (H. vulgare ssp. vulgare) cultivars for drought stress. To evaluate genetic potential and characterization of variation among a diverse collection of barley and WB genotypes, mostly originated from Iran, a field experiment was performed under three moisture environments (control, mild and intense drought stress) during two years (2012–2014). Considerable variation was observed among the wild and cultivated genotypes for drought tolerance and agronomic traits. Principal component analysis (PCA) grouped genotypes studied into three groups (WB, two-row barley and sixrow barley groups). However, Iranian and foreign WB genotypes were not completely separated, showing a high variation within both gene pools. The high significance of genotype by environment interaction, confirms importance of using accurate target environments for drought stress breeding. A number of WB genotypes with the highest values of the number of tillers, number of seed per spike, seed weight, grain yield and yield stability index under stressed environments were identified as superior genotypes. Most of these genotypes originate from Iran, highlighting the importance of this germplasm in barley breeding
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