A robust {RFPI}-based 1-bit compressive sensing reconstruction algorithm

n this paper, we introduce a 1-bit compressive sensing reconstruction algorithm that is not only robust against bit flips in the binary measurement vector, but also does not require a priori knowledge of the sparsity level of the signal to be reconstructed. Through numerical experiments, we show that our algorithm outperforms state-of-the-art reconstruction algorithms for the 1-bit compressive sensing problem in the presence of random bit flips and when the sparsity level of the signal deviates from its estimated value

An Improved Continuous-Action Extended Classifier Systems for Function Approximation

AbstractDue to their structural simplicity and superior generalization capability, Extended Classifier Systems (XCSs) are gaining popularity within the Artificial Intelligence community. In this study an improved XCS with continuous actions is introduced for function approximation purposes. The proposed XCSF uses “prediction zones,” rather than distinct “prediction values,” to enable multi-member match sets that would allow multiple rules to be evaluated per training step. It is shown that this would accelerate the training procedure and reduce the computational cost associated with the training phase. The improved XCSF is also shown to produce more accurate rules than the classical classifier system when it comes to approximating complex nonlinear functions

Explaining the Relationship Between Bitcoin Price in Business Financial Transactions and Search Volume in Order to Identify its Behavioral Pattern: A Comparative Study Between Countries

Nowadays, Bitcoin is one of the most important cryptocurrencies that has the largest volume of exchanges in the cryptocurrency market and between businesses. The feature of the possibility of online payments between individuals and businesses directly and without referring to the financial institution has made the price of these cryptocurrencies important for businesses and traders and the basis for decision making. Therefore, the issue of price predictability is an important issue that can be affected by search volume. The purpose of this research is studying and investigating the relationship between the volume of Internet searches and its effect on the price of these cryptocurrencies. In addition, another goal of this article is to introduce Google Trends (GT) as a tool for accessing big data for business researches. The required data was extracted from Google Trends in the period 2016 to 2021. The volume of data was 5742 and the whole statistical population was used. The research method is descriptive-exploratory with the aim of explaining the relationship between "Google search volume index" and "bitcoin price". Data were analyzed using Spearman correlation test. Findings indicate a strong and very strong relationship between the studied indicators, which is explained

Oral health status among Iranian veterans exposed to sulfur mustard: a case-control study

Background: Sulfur mustard (SM) is a chemical warfare agent that has been repeatedly used since World War I. SM has chronic and deleterious effects on different body organs such as lungs, skin and eyes. Objectives: To determine dental and oral health status of chemical victims of SM who were exposed to SM during the Iraqi-Iran war. Material and Methods: In this case-control study, 100 male subjects exposed to SM were chosen as cases, and 100 non-exposed volunteers were chosen as controls. These groups were selected randomly according to their referral number, and were matched regarding age. Collection of information was performed using Oral Health Assessment Form designed by the World Health Organization. Quantitative and qualitative data were compared between the groups using independent samples t-test and Chi-square test, respectively. Results: There was a significant difference between the case and control groups with respect to the frequencies of oral candidiasis, pharyngeal erythema and/or hyperplasia, hairy tongue and reflux disease, being higher in the former group. There was also a positive association between the frequency of candidiasis and the percentage of disability; pharyngeal erythema and/or hyperplasia and use of salmeterol spray; and between hairy tongue and antibiotic use in the case group. Conclusions: Exposure to SM and the use of drugs for controlling long-term complications does not increase the risk of tooth decay, tooth loss, and intra and/or extra oral lesions in patients, but may be associated with increased incidence of oral candidiasis, pharyngeal erythema and/or hyperplasia, hairy tongue and reflux disease

Determination of histamine in Iranian cheese using enzyme-linked immunosorbent assay (ELISA) method

Histamine is a simple chemical substance created during processing of the amine acid histidine. Histamine is also an agent in inflammation and the increased presence of histamine causes allergic reaction. Histamine may play a role in the increased prevalence of food intolerances. The objective of this study was to determine histamine contents. Forty four (44) samples of traditional and commercial cheese were analyzed by enzyme-linked immunosorbent assay (ELISA) method in Iran. In the two cheese samples of the 44 samples (4.5%), the presence of histamine was 26 and 46.7 mg/100 g. Histamine in any of the cheese samples was not higher than the tolerance limit of histamine contents (50 mg histamine/100 g) accepted by European countries. The values were comparable and in the range of the literature values. The results of this study indicate that the produced cheese and marketed cheese in Iran have concentrations below 50 mg histamine/100 g. Further studies should be done to investigate the presence of this toxin in different foodstuffs.Keywords: Histamine, cheese, enzyme-linked immunosorbent assay (ELISA), IranAfrican Journal of Biotechnology Vol. 12(3), pp. 308-31

Assessment of Clinical Competency of Dental Students in Recognizing Landmarks and Radiological Lesions of Jaw and Face

Background: The ability to detect and recognize abnormal patterns in diagnostic images requires sufficient knowledge in studying radiographic images. By teaching oral radiology, dentists must know basic skills for interpreting images inside or outside the mouth. Therefore, this study aimed to assess the clinical competence of dental students in recognizing landmarks and radiological lesions of the jaw and face.Methods: In this cross-sectional study conducted during the academic year 2021, the authors included general dentistry students in their 5th and 6th years of study at Yasuj University of Medical Sciences dental school. Initially, an objective structured clinical exam with 18 stations was designed to assess six different radiology students’ competencies with the help of the radiology department’s faculty members. Due to Covid-19 disease, 19 tests were held in absentia through the university’s Faradid system. After this test, the results were analyzed using SPSS software version 26.Results: The mean skill levels of dental students at Yasouj University of Medical Sciences in the diagnosis of different categories were as follows: Diagnosis of Dental Anomalies: 0.19±0.70, Diagnosis of Bone Anomalies: 0.34±0.44, Diagnosis of Anatomical Landmarks: 0.29±0.75, Diagnosis of Radiographic Techniques: 0.13±0.92, Diagnosis of Radiopaque Lesions: 0.5±0.31, Diagnosis of Radiolucent Lesions: 0.26±0.45.Conclusion: The lowest level of students’ skills belonged to the diagnosis of bone anomalies and radiolucent diagnosis. It is suggested that radiology professors take some effective measures to improve education regarding bone anomalies and radiolucent diagnosis

Assessing the effect of educational program via SMS service of mobile phone on knowledge and attitude towards self-care in type 2 diabetic patients in Chabahar

زمینه و اهداف: این مطالعه با هدف تعیین تاثیر اجرای برنامه آموزشی با استفاده از سرویس پیامک تلفن ‏همراه بر آگاهی و نگرش نسبت به خودمراقبتی در بیماران دیابتی نوع 2 طراحی و اجرا شد. مواد و روش‌ها: پژوهش به‌صورت کارآزمایی بالینی نیمه‏تجربی با مشارکت 74 نفر از بیماران مبتلا به دیابت نوع2 مراجعه کننده به مراکز بهداشتی درمانی شهرستان چابهار انجام شد. بیماران به روش نمونه ­گیري هدفمند انتخاب و به‌صورت تصادفی به دو گروه 37 نفره مداخله و کنترل تقسیم شدند. ابزار گردآوري داده ­ها، پرسشنامه­ های اطلاعات دموگرافیک، آگاهی و نگرش بود. پیامک­های آموزشی به مدت چهارهفته و به صورت روزانه به مشارکت‌کنندگان گروه مداخله ارسال شد. دو ماه پس از مداخله آموزشی، پرسشنامه توسط مشارکت‏کنندگان هر دو گروه تکمیل شد. داده­ها با استفاده از نرم افزار  SPSS نسخه 16 و آزمون­هاي آماری کای دو، t مستقل، t زوجی و من‌ویتنی تجزیه ‌و تحلیل شد. تمامی مراحل مطالعه حاضر طبق موازین اخلاقی اجرا گردید. یافته‏ ها: با وجود همسانی متغیرهای دموگرافیک در دو گروه (p>0.05)، میانگین نمرات آگاهی و نگرش دو گروه مداخله و کنترل قبل از آموزش تفاوت آماري معنا‏دار نداشــت (p>0.05)؛ اما بعد از آموزش، تفاوت میانگین نمرات آگاهی و نگرش بین دو گروه مداخله و کنترل از نظر آماري معنا‏دار بود (p<0.001). نتیجه‌ گیری: نتایج حاکی از اثربخشی مداخله آموزشی در ارتقای آگاهی و نگرش بیماران بود که با توجه به مزایای این روش از قبیل مقرون­ به ­صرفه بودن و دسترسی آسان، لازم است بیش‌از پیش مورد توجه قرار گیرد.Background and Aims: The aim of this study was to determine the effect of educational program implementation using mobile phone SMS service on knowledge and attitude towards self-care in type 2 diabetic patients. Materials and Methods: This quasi-experimental clinical trial was performed with 74 diabetes patients in Chabahar. Patients were selected through purposeful sampling and randomly divided into two groups of 37 person, intervention and control groups. The data collection tools were demographic, knowledge and attitude questionnaires. Educational text messages were sent to the intervention group on a daily basis for four weeks. Two months after the intervention, the questionnaires was completed by participants in both groups. Data were analyzed by SPSS software version 16 and Chi-square, independent t-test, paired t-test and Mann-Whitney test. All stages of the study were conducted according to moral standards. Results: Although the demographic variables were consistent in both groups (P˃0.05), the mean scores of knowledge and attitude of the two intervention and control groups were not significantly different before the training (P>0.05). However, following desired education, the difference in mean of knowledge and attitude scores between two intervention and control groups was statistically significant (P<0.001(. Conclusion: The results indicated the effectiveness of educational intervention in improving the knowledge and attitude of patients through Sending SMS Educational Method (SSEM). Considering the advantages of this method, such as affordability and easy access, it is necessary to pay more attention

Negative Correlation between Serum S100B and Leptin Levels in Schizophrenic Patients During Treatment with Clozapine and Risperidone: Preliminary Evidence

Abstract Recently, extensive efforts have been made to understand the rate of energy expenditure and the weight gain associated with atypical antipsychotic treatment, including identification of markers of obesity risk. In recent years, leptin, an adipocyte hormone, has gained significant interest in psychiatric disorders. S100B has been considered as a surrogate marker for astrocytespecific damage in neurologic disorders. Also, S100B has been detected in adipose with concentration as high as nervous tissue as a second release source. In this study we evaluated the relationship between S100B and leptin in schizophrenic patients under treatment with clozapine and risperidone.This study included 19 patients meeting the DSM-IV-TR criteria for schizophrenia, having body mass index (BMI) of 16-25 kg/m 2 and suffering schizophrenia for more than 3 years and from this study. Twenty five healthy controls were group matched for age and gender whose BMI was 16-25 kg/m 2 . Serum S100B and leptin levels and positive and negative symptom scale (PANSS) were assessed at admission and after six weeks. During the study, S100B showed a strong and negative correlation with leptin (r = -0.5, P = 0.01). Also, there were negative correlation between serum S100B level and PANSS negative subscale after 6 weeks of treatment (r = -0.048, P = 0.8). Positive correlation between leptin level and PANSS suggested a potential role for leptin which can mediate the link between antipsychotic induced weight gain and therapeutic response in schizophrenia

Solubility of 2-Hydroxybenzoic Acid in Water, 1-Propanol, 2-Propanol, and 2-Propanone at (298.2 to 338.2) K and Their Aqueous Binary Mixtures at 298.2 K

Article discussing the solubility of 2-hydroxybenzoic acid in water, 1-propanol, 2-propanol, and 2-propanone at (298.2 to 338.2) K and their aqueous binary mixtures at 298.2 K

Solubility of Anthracene in Binary and Ternary Mixtures of Cyclohexanone, Ethyl Acetate, and Methanol at 298.2 K

This article discusses the solubility of anthracene in binary and ternary mixtures of cyclohexanone, ethyl acetate, and methanol at 298.2 K