Modified Projective Synchronization of Chaotic Systems with Noise Disturbance, an Active Nonlinear Control Method

The synchronization problem of chaotic systems using active modified projective nonlinear control method is rarely addressed. Thus the concentration of this study is to derive a modified projective controller to synchronize the two chaotic systems. Since, the parameter of the master and follower systems are considered known, so active methods are employed instead of adaptive methods. The validity of the proposed controller is studied by means of the Lyapunov stability theorem. Furthermore, some numerical simulations are shown to verify the validity of the theoretical discussions. The results demonstrate the effectiveness of the proposed method in both speed and accuracy points of views

Adaptive Projective Lag Synchronization of T and Lu Chaotic Systems

In this paper, the synchronization problem of T chaotic system and Lu chaotic system is studied. The parameter of the drive T chaotic system is considered unknown. An adaptive projective lag control method and also parameter estimation law are designed to achieve chaos synchronization problem between two chaotic systems. Then Lyapunov stability theorem is utilized to prove the validity of the proposed control method. After that, some numerical simulations are performed to assess the performance of the proposed method. The results show high accuracy of the proposed method in control and synchronization of chaotic systems

Brain-Included 18F FDG PET/CT Acquisition Protocol: Cancer-Specified Clinical Impact of Newly-Diagnosed Brain Metastasis in Extra-Cerebral Cancer Patients

Background: Evolution of individualized radiosurgical therapeutic methods for brain metastasis as an ominous prognostic finding may encourage a more extensive application of neuroimaging in patients with extracerebral cancer. The aim of the present study was to investigate the added value of brain-included 18 F FDG PET/CT acquisition protocol based on primary cancer type and clinical indication.Materials and Methods: A retrospective review was performed on 3945 18 F FDG PET/CT reports of patients with extra-cerebral cancer underwent brain-included PET/CT study. Cerebral lesions suggestive of brain metastasis were subsequently verified by MRI, MRI+MRS, surgical pathology and a 1-year clinical formal follow up. The detection rate of new brain metastasis and related impact on disease status were then investigated in each cancer type based on clinical indication.Results: Of a total 3933 eligible patients, 44 (1.12%) were finally verified to have new cerebral metastasis. The most common primary sources were lung cancer (19/385, 4.93%), cancer of unknown primary (CUP) (5/168, 2.97%) and breast cancer (8/468, 1.71%). The most common clinical indications were initial staging (17/44, 43.1%) and restaging (19/44, 36.4%). Change in disease status occurred in 12 out of 44 patients (27.3%), more frequently occurred in lung cancer (n=4), in all indications and breast (n=3) cancers at restaging (n=7, 43.8%).Conclusion: PET/CT acquisition protocol study may be best optimized based on the type of primary cancer and timing of evaluation. Brain-included field of view may be recommended for lung cancer regardless the clinical indication, cancer of unknown primary and breast cancer at restaging

Developing a Conceptual Model of Cultural Policy-making in District 8 Payame Noor Universities based on Piety

The present study aimed to provide a conceptual model of cultural policy-making in Payame Noor universities in District 8 based on piety and virtue. In this study, the components of cultural policy based on piety were first identified through exploratory studies and surveys of knowledge-aware experts using the Delphi technique, and then these factors were tested in the form of a model designed in the statistical population. The statistical population of the study was 30 experts to test the model and to measure the research variables according to the managers of District 8 Payame Noor University; the head of cultural affairs of the university and clerics and professors of Islamic education department of Payame Noor Universities District 8 were used, which were 110 individuals. Due to the limited statistical population, the census method was used. The present study is a descriptive-correlational research that has been done by survey method. Furthermore, this research is development-applied in terms of purpose. The data collection method in this study is a combination of library and field studies and the tools of data collection are review of documents, interviews and questionnaires, which confirmed the validity and reliability of the questionnaires. In order to analyze the data, descriptive statistics (types of indicators, statistical tables and graphs) and inferential statistics (structural equation modeling) have been used. The research findings, while confirming the proposed model of research, showed that piety and its components: God-centeredness and monotheism, promoting the need to obey divine sovereignty, expediency in Islamic culture and meritocracy (Imam Ali's biography) have a positive and significant effect on cultural planning. At the end, research suggestions were presented

Medical image registration using unsupervised deep neural network: A scoping literature review

In medicine, image registration is vital in image-guided interventions and other clinical applications. However, it is a difficult subject to be addressed which by the advent of machine learning, there have been considerable progress in algorithmic performance has recently been achieved for medical image registration in this area. The implementation of deep neural networks provides an opportunity for some medical applications such as conducting image registration in less time with high accuracy, playing a key role in countering tumors during the operation. The current study presents a comprehensive scoping review on the state-of-the-art literature of medical image registration studies based on unsupervised deep neural networks is conducted, encompassing all the related studies published in this field to this date. Here, we have tried to summarize the latest developments and applications of unsupervised deep learning-based registration methods in the medical field. Fundamental and main concepts, techniques, statistical analysis from different viewpoints, novelties, and future directions are elaborately discussed and conveyed in the current comprehensive scoping review. Besides, this review hopes to help those active readers, who are riveted by this field, achieve deep insight into this exciting field

Nudibranchs from the Northern Persian Gulf

Field studies were conducted in a number of intertidal and offshore islands in the Persian Gulf between 2006 to 2013. SCUBA and skin diving surveys were conducted around Larak, Hormuz, Qeshm, Hengam, Farur, Kish, Lavan, Khark and Farsi islands in the northern region of the Persian Gulf. Marine invertebrates including nudibranchs were photographed up to 32 m. Several species of nudibranchs are reported from the northern region of the Persian Gulf, over the Iranian side. In total, 32 genera of nudibranchs are recorded, which include Fryeria rüeppelii, Haminoea sp., Chromodoris annulata, Gymnodoris rubropapulosa, Cuthona yamasui, Hypselodoris maridadilus, Glossodoris pallida, Glossodoris sp., Asteronotus cespitosus, Marioniopsis viridescens, Stylocheilus striatus, Jorunna funebris and Elysia sp. were recorded from several Iranian Island in the Persian Gulf. The most common species was Chromodoris annulata throughout most of the surveyed islands, but Haminoea sp. was highly abundant and conspicuous species only in Farsi Island. Except for G. pallida, Glossodoris sp. and C. annulata, all the above species are considered new records for the northern region of the Persian Gulf, but Bursatella leachii, M. viridescens, Phestilla lugubris, Discodoris lilacina and Haminoea sp. are new records from the Persian Gulf proper. An increase in several new records to the Iranian fauna and new records of rare species, in relatively few years results mainly from sampling effort and contributions by specialists on samples of poorly known sampled areas. Prospects for finding new and more species are promising given more diving operations are carried out

ANTIBIOTIC SUSCEPTIBILITY PATTERNS OF ISOLATED BACTERIA FROM BILE FLUIDS OF PATIENTS WITH GALLSTONE DISEASE IN ISFAHAN CITY (IRAN)

Bacterial infections are one of the important agents in the creation of gallstones in the gallbladder. In recent years the spread of antibiotic-resistant bacteria such as extended-spectrum beta-lactamases (ESBL) is increasing and of concern in hospitalized patients worldwide. The purpose of this study was to investigate the antibiotic susceptibility patterns of isolated bacteria from the bile specimens of patients with chronic and acute cholecystitis who had been operated by single-incision laparoscopic cholecystectomy (SILC) in Isfahan (Iran) using an antibiogram susceptibility test and molecular technique. The bile fluids of 91 patients were obtained from the Al-Zahra hospital and were cultured on specific media for the isolation of Gram-negative and positive bacteria and the disk diffusion test was done to determine the antibiotic susceptibility patterns of isolated bacteria. Finally, bacterial DNA was extracted from the bile samples and polymerase chain reaction (PCR) was performed to investigate extended-spectrum beta-lactamases genes. The bacteria Escherichia coli, Klebsiella pneumoniae, Proteus spp. and Staphylococcus aureus were detected in bile specimens cultured with high frequency, and the results showed that biliary infection increased with aging in patients with gallstone disease operated by SILC. The results showed a high frequency of ESBL genes including TEM, SHV, and CTX-M in isolated bacteria (especially Escherichia coli and Klebsiella spp.). Thus, evaluating the antibiotic susceptibility patterns and screening of ESBLs bacteria in patients with gallstones are essential. Prescribing suitable drugs, designing good strategies, and informing the medical community could decrease bile infection and antibiotic-resistant bacteria in clinical centers and hospitals

Genetic Diversity of Toxoplasma gondii by Serological and Molecular Analyzes in Different Sheep and Goat Tissues in Northeastern Iran

Background: Toxoplasmosis is a parasitic disease caused by compilation protozoan agent  Toxoplasma gondii, leading to significant financial and quality-adjusted life-year losses. Overcooked or raw meat consumption has been a considerable transmission route. The present study was conducted to determine the seropositivity rate of T. gondii in sheep and goats by serological and molecular tests and genotyping of obtained isolates in northeast Iran. Methods: Blood and tissue samples (diaphragm, heart) of 296 animals (including 168 sheep and 128 goats) were collected from the slaughterhouse in Quchan Country from august 2016 to April 2017. Modified agglutination test (MAT) and the PCR method performed to detect parasite DNA on tissues.PCR-RFLP method of GRA6 gene was used to determine the genotype of T. gondii. In addition, sequencing analysis was performed to evaluate the Toxoplasma type strains. Results: Serum positive for MAT results were found in 27.4% of sheep and 23.4% of goats. Positive PCR of B1 gene results in diaphragm and heart tissues of sheep and goats was 47.8% and 26.1%, 40% and 23.3%, respectively. PCR of GRA6 gene results were positive in 10 samples that RFLP technique results using MseІ enzyme revealed genotype І. Sequencing and phylogenetic analysis revealed DNA of all samples was closely related to Toxoplasma type І. Conclusion: Concerning the high seropositivity rate of toxoplasmosis, undertaking an appropriate preventive program for reducing the prevalence of T. gondii infection by raw or undercooked meat consumption of livestock is recommended. Our study supports the notion that these animals' consumption of raw and undercooked meat can be a probable source of human toxoplasmosis