bluuebunny/crossref_metadata_2025 huggingface dataset:
BFR‐SE: A Blockchain‐Based Fair and Reliable Searchable Encryption Scheme for IoT with Fine‐Grained Access Control in Cloud Environment
Authors: Gao Hongmin , Luo Shoushan , Ma Zhaofeng , Yan Xiaodan , Xu Yanping
Published: November 2021

Due to capacity limitations, large amounts of data generated by IoT devices are often stored on cloud servers. These data are usually encrypted to prevent the disclosure, which significantly affects the availability of this data. Searchable encryption (SE) allows a party to store his data created by his IoT devices or mobile in encryption on the cloud server to protect his privacy while retaining his ability to search for data. However, the general SE techniques are all pay‐then‐use. The searchable encryption service providers (SESP) are considered curious but honest, making it unfair and unreliable. To address these problems, we combined ciphertext‐policy attribute‐based encryption, Bloom filter, and blockchain to propose a blockchain‐based fair and reliable searchable encryption scheme (BFR‐SE) in this paper. In BFR‐SE, we constructed an attribute‐based searchable encryption model that can provide fine‐grained access control. The data owner stores the indices on SESP and stores some additional auxiliary information on the blockchain. After a data user initiates a request, SESP must return the correct and integral search results before the deadline. Otherwise, the data user can send an arbitration request, and the blockchain will make a ruling. The blockchain will only perform arbitrations based on auxiliary information when disputes arise, saving the computing resources on‐chain. We analyzed the security and privacy of BFR‐SE and simulated our scheme on the EOS blockchain, which proves that BFR‐SE is feasible. Meanwhile, we provided a thorough analysis of storage and computing overhead, proving that BFR‐SE is practical and has good performance.
The Predictive Model of Oral Squamous Cell Survival Carcinoma: A Methodology of Validation
Authors: Ahmad Wan Muhamad Amir W , Yaqoob Muhammad Azeem , Noor Nor Farid Mohd , Ghazali Farah Muna Mohamad , Rahman Nuzlinda Abdul , Tang Liszen , Aleng Nor Azlida , Alam Mohammad Khursheed
Published: November 2021

Background. Cancer is primarily caused by smoking, alcohol, betel quit, a series of genetic alterations, and epigenetic abnormalities in signaling pathways, which result in a variety of phenotypes that favor the development of OSCC. Oral squamous cell carcinoma (OSCC) is the most common type of oral cancer, accounting for 80–90% of all oral malignant neoplasms. Oral cancer is relatively common, and it is frequently curable when detected and treated early enough. The tumor‐node‐metastasis (TNM) staging system is used to determine patient prognosis; however, geographical inaccuracies frequently occur, affecting management. Objective. To determine the additional relationship between factors discovered by searching for sociodemographic and metastasis factors, as well as treatment outcomes, which could help improve the prediction of the survival rate in cancer patients. Material and Methods. A total of 56 patients were recruited from the ambulatory clinic at the Hospital Universiti Sains Malaysia (USM). In this retrospective study, advanced computational statistical modeling techniques were used to evaluate data descriptions of several variables such as treatment, age, and distant metastasis. The R‐Studio software and syntax were used to implement and test the hazard ratio. The statistics for each sample were calculated using a combination model that included methods such as bootstrap and multiple linear regression (MLR). Results. The statistical strategy showed R demonstrates that regression modeling outperforms an R‐squared. It demonstrated that when data is partitioned into a training and testing dataset, the hybrid model technique performs better at predicting the outcome. The variable validation was determined using the well‐established bootstrap‐integrated MLR technique. In this case, three variables are considered: age, treatment, and distant metastases. It is important to note that three things affect the hazard ratio: age (β1: ‐0.006423; p < 2e − 16), treatment (β2: ‐0.355389; p < 2e − 16), and distant metastasis (β3: ‐0.355389; p < 2e − 16). There is a 0.003469102 MSE for the linear model in this scenario. Conclusion. In this study, a hybrid approach combining bootstrapping and multiple linear regression will be developed and extensively tested. The R syntax for this methodology was designed to ensure that the researcher completely understood the illustration. In this case, a hybrid model demonstrates how this critical conclusion enables us to better understand the utility and relative contribution of the hybrid method to the outcome. The statistical technique used in this study, R, demonstrates that regression modeling outperforms R‐squared values of 0.9014 and 0.00882 for the predicted mean squared error, respectively. The conclusion of the study establishes the superiority of the hybrid model technique used in the study.
Relationship between a Prolonged Corrected QT Interval and Mortality in Patients Presenting with Syncope at the Emergency Department
Authors: Akyol Pınar Yeşim , Acar Hüseyin , Çakır Adem , Şahin Yusuf , Karakaya Zeynep , Topal Fatih Esad
Published: November 2021

Background. Syncope is a common symptom in emergency department patients. Among various etiological factors, cardiac causes have the highest risk of mortality. The corrected QT interval is considered an independent predictor of mortality for many diseases. Objectives. Analyze QT interval analysis of patients presenting to the emergency department with syncope. Methods. In this prospective observational study, patients who presented to the emergency department with syncope between January 1, 2018, and January 1, 2019 were included. Results. The median age was 64 (49‐78) years, and 58.8% of patients were male. The corrected QT interval (QTc) in patients with coronary artery disease and chronic obstructive pulmonary disease was longer than those without. There was no statistically significant association between hypertension, diabetes, stroke, thyroid disease, and prolonged QTc. Patients who did not survive had significantly prolonged QT intervals. According to ROC analysis, sensitivity of >440.5 ms QTc values in predicting mortality was 86% and specificity was 71% (AUC = 0.815; 95%CI = 0.71 − 0.91; p < 0.001). Conclusions. Patients admitted to emergency department with syncope and a prolonged QTc are associated with a higher mortality rate and thus can provide us with an important guide for the management of these patients.
Elderly Patients with Mild Cognitive Impairment Exhibit Altered Gut Microbiota Profiles
Authors: Pan Qiong , Li Ya-Qian , Guo Ke , Xue Min , Gan Yu , Wang Kejian , Xu Da-Bao , Tu Qiu-Yun
Published: November 2021

Background. As a transitional state between normal aging and Alzheimer’s disease (AD), mild cognitive impairment (MCI) is characterized by a worse cognitive decline than that of natural aging. The association between AD and gut microbiota has been reported in a number of studies; however, microbial research regarding MCI remains limited. Methods. This study examined 48 participants, of whom 22 were MCI cases and 26 were normal control cases. Fecal samples were collected for 16S ribosomal RNA (rRNA) quantitative arrays and bioinformatics analysis. Results. A principal coordinates analysis (PCoA) and nonmetric multidimensional scaling (NMDS) both demonstrated that the microbial composition of participants with MCI deviated from that of healthy control participants. Multiple bacterial species were significantly increased (e.g., Staphylococcus intermedius) or decreased (e.g., Bacteroides salyersiae) in samples from the MCI group. Conclusion. The composition of gut microbiota differed between normal control and MCI cases. This is the first study to identify a signature series of species in the gut microbiota of individuals with MCI. The results provide a new direction for the future development of an early diagnosis and probiotic regimen.
Detection Performance Analysis of the Standard FDA and FDA-MIMO Radar in the Gaussian Background
Authors: Liu Yongze , Ma Yuehong , Jing Haiming
Published: November 2021

This paper studies the optimal detection performance of the standard frequency diverse array (FDA) radar and FDA multi-input multioutput (FDA-MIMO) radar in Gaussian clutter and noise. Array signal processing scheme at the receiver is firstly designed to obtain the array steering vector containing range, azimuth, and frequency increment. For the two array configurations, namely, collocated transmit-receive and collocated transmit distributed receive, the likelihood ratio test statistics and the test statistic distributions are derived in the Neyman–Pearson sense. It is then investigated how the number of array elements influences the detection performance of various radar systems at low signal-to-noise ratio (SNR). Several numerical simulations are carried out to demonstrate that the performance improvement is hard for MIMO and FDA-MIMO by only increasing the number of transmit elements, while it is achievable for the FDA. The paper finally makes a comparative analysis for detection performances of five radar configurations under different SNRs.
Application of MRI Image Based on Computer Semiautomatic Segmentation Algorithm in the Classification Prediction of Breast Cancer Histology
Authors: Sheng Aizhu , Li Aijing , Xia Jianbi , Ye Yizhai
Published: November 2021

Objective. The study aimed to investigate the predictive classification accuracy of computer semiautomatic segmentation algorithm for the histological grade of breast tumors through the magnetic resonance imaging (MRI) examination. Methods. Five dynamic contrast-enhanced (DCE) MRI regions of interest (ROIs) were captured using computer semiautomatic segmentation method, referring to the entire tumor area, tumor border area, proximal gland area, middle gland area, and distal gland area. According to the mutual information maximum protocol, the corresponding five ROIs were extracted from diffusion weighted imaging (DWI) combined with DCE-MRI images. To use the features in the nonoverlapping area of DWI image and DCE-MRI image as elements, a single-variable logistic regression model was established corresponding to element characteristics. After multiple training, the model was evaluated using the receiver operating characteristic (ROC) curve and area under curve (AUC). Results. This DCE-MRI combined with DWI was superior to DCE-MRI and DW in the prediction of tumor area features. To use DCE-MRI or DWI alone was less effective than DCE-MRI combined with DWI. The DWI combined DCE-MRI demonstrated good regional segmentation effects in the tumour area, with luminal A value being 0.767 and the area under curve (AUC) value being 0.758. After optimization, the AUC value of the tumor area was 0.929, indicating that classification effects can be enhanced by combining the two imaging methods, which complemented each other. Conclusions. The DWI combined DCE-MRI imaging has improved the early diagnosis effects of breast cancer by predicting the occurrence of breast cancer through the labeling of biomarkers.
Analysis of Cultural Education and Behavior in Colleges and Universities Based on Image Recognition Technology
Authors: Jia Nan , Jing Huilan
Published: November 2021

When the rationality and importance of cultural education in colleges and universities have been confirmed, the key question is how to better realize cultural education. This requires an in‐depth understanding and grasp of the cultural education work of colleges and universities, analyzing the internal logic contained in this education system and then discussing its practical rationale. This paper proposes a multiobjective Support Vector Machine (SVM) image recognition method for college cultural and educational behaviors based on three decision‐making theories. Aimed at the problem of classification errors caused by image segmentation in image recognition of cultural and educational behaviors in colleges and universities, it is found that the reason that causes the same target to be divided into different subblocks is that the ordinary SVM classifier has only two choices of “yes” and “not” in classification. It is impossible to set the conditions for the classification of cultural and educational behavior images to satisfy all the existing conditions. In order to solve the above problems, this paper combines the three decision‐making ideas with the image recognition of university cultural education behaviors and designs a multiobjective SVM image recognition method of university cultural education behaviors based on the three decision‐making theories. We establish a higher education service quality structure model and use LISREL to explore the causal relationship among students’ perceived service quality, university image, student’s perceived service value, student trust, student satisfaction, and student behavior intentions in the field of higher education. The empirical results show that student satisfaction has a significant direct and positive effect on student behavior. Service quality has a significant direct and positive impact on perceived value and student trust. The perceived risk of higher education services determines the image of colleges and universities, and student trust plays an important role. The image of colleges and universities acts on student satisfaction through perceived value and student trust. The image of colleges and universities has a direct impact on students’ behavioral inclination, and it acts on students’ behavioral inclination through student trust and student satisfaction. Among the influences on behavior tendency, the direct positive effect of student trust is the largest, followed by the image of colleges and universities and the quality of service.
Application of Artificial Intelligence in Emergency Nursing of Patients with Chronic Obstructive Pulmonary Disease
Authors: Hong Lingzhi , Cheng Xufang , Zheng Deming
Published: November 2021

The research achievements of artificial intelligence technology in the development of chronic obstructive pulmonary disease were explored, and the advantages and problems encountered in the development of intelligent nursing were analyzed. This paper presents the application of artificial intelligence in the emergency care of patients with chronic obstructive pulmonary disease. The method included 447 COPD patients in a randomized controlled trial to observe the improvement of quality of life at 4 and 12 months after artificial intelligence medical intervention. A prospective randomized controlled trial included 101 patients with COPD who underwent a 9-month web-based knowledge exercise on the prevention of acute exacerbation of COPD through artificial intelligence medicine and were randomly divided into two groups: the experimental group and the control group. The results show that, in the experimental group and the control group, after 4 months, the quality of life does not change; after 12 months, compared with controls, the quality of life and emotional and psychological conditions have improved obviously. 29 patients who participated in the experiment and were randomly divided into the experimental group and the control group showed satisfactory results. COPD hospitalized rate and length of hospital stay were decreased in the experimental group than in the control group. For single-factor analysis, artificial intelligence medical intervention has not achieved significant significance, and the experimental results have preliminarily confirmed the effectiveness of artificial intelligence medical treatment.
A WeChat-Based Mobile Platform for Perioperative Health Education for Gastrointestinal Surgery
Authors: Li Ying , Cheng Xiao-hui , Xu Wen-ting , Tan Li-ping , Gou Xiao-jun
Published: November 2021

Appropriately instructing and guiding patients before and after surgery is essential for their successful recovery. In recent years, however, the development of the enhanced recovery after surgery (ERAS) protocol has restricted the opportunity for healthcare professionals to spend time with their patients before and after surgery because of efficiency-driven, shortened hospital stay. Here, we embedded health education information of the perioperative period for gastrointestinal surgery on a WeChat-based mobile platform and evaluated the platform through medical staff evaluation, patient volunteer evaluation, and quantitative grading rubric. Clinicians and nurses believed that the mobile platform was attractively designed and easy to navigate, valuable, and adequate for patient health education. The content of health education was embedded into the WeChat-based mobile platform, thereby allowing patients and caregivers to access information at their own pace and enable repeat reading.
Hydrogen: Potential Applications in Solid Organ Transplantation
Authors: Yang Fuxun , Lei Yu , Liu Rongan , Luo Xiaoxiu , Li Jiajia , Zeng Fan , Lu Sen , Huang Xiaobo , Lan Yunping
Published: November 2021

Ischemia reperfusion injury (IRI) in organ transplantation has always been an important hotspot in organ protection. Hydrogen, as an antioxidant, has been shown to have anti‐inflammatory, antioxidant, and antiapoptotic effects. In this paper, the protective effect of hydrogen against IRI in organ transplantation has been reviewed to provide clues for future clinical studies.
Hybrid Models for Weather Parameter Forecasting
Authors: Bhardwaj Rashmi , Duhoon Varsha
Published: November 2021

The objective of the paper is to compare hybrid conjunction models with conventional models for the reduction of errors in weather forecasting. Besides the simple models like RBF model, SMO model, and LibSVM model, different hybrid conjunction models have been used for forecasting under different schemes. The forecasts from these models are further compared on the basis of errors calculated and time taken by the hybrid models and simple models in order to forecast weather parameters. In this paper, conjunction models over the convectional models are designed for forecasting the weather parameters for the reduction of error. India is a tropical country with variations in weather conditions. The objective is to build a conjunction model with less error to forecast weather parameters. A hybrid conjunction model is developed and analysed for different weather parameters for different metropolitan cities of India. Performance measurement is analysed for weather parameters. It is observed that, on the basis of error comparison and time taken by the models, the hybrid wavelet‐neuro‐RBF model gives better results as compared to the other models due to lower values of determined errors, better performance, and lesser time taken. The study becomes significant as weather forecasting with accuracy is a complex task along with the reduction of prediction error by the application of different models and schemes. It is concluded that the proposed hybrid model is helpful for forecasting and making policies in advance for the betterment of the human being, farmers, tourists, and so on as in all these activities, weather forecast plays an important role.
Optimization of Esophageal Ultrasound under Artificial Fish Swarm Algorithm and Its Adoption in Treatment of Ventricular Septal Defect
Authors: Li Zhi , Chen Guihe , Wang Feng
Published: November 2021

This work was aimed at exploring the adoption value of the optimized and upgraded esophageal ultrasound in the treatment of patients with ventricular septal defect (VSD) by artificial fish swarm algorithm. A model was built based on artificial fish swarm algorithm. A random ultrasonic optical signal in the database was decomposed several times and sparsity was optimized to complete partial optimization, which was then extended to global optimization. A total of 100 patients with ventricular septal defect were divided into control group who underwent cardiopulmonary bypass under the guidance of three-dimensional thoracic ultrasound and experimental group of ventricular septal defect occlusion under the guidance of esophageal ultrasound based on artificial fish swarm algorithm. The results showed that the number of successful cases in the experimental group was 12 cases of perimembranous type, 10 cases of septal type, 7 cases of simple membranous type, 13 cases of muscular type, 4 cases of subdry type, and 2 cases of ridge type. The average length of operation after surgery was 70.65 minutes, the average length of ventilator ventilation was 125.8 minutes, and the average length of intensive care unit was 377.9 minutes. The average length of hospital stay after surgery was 5.6 days, and the average total length of hospital stay was 8.2 days, which were better than the control group in many aspects, with statistical significance (

P
<
0.05

). In short, the artificial fish swarm algorithm for esophageal ultrasound-guided ventricular septal defect closure had short operation time and good postoperative effect, which was of high application value in the clinical treatment of patients with ventricular septal defect.
Osmotic Demyelination Syndrome due to Rhabdomyolysis and Hyperosmolar Hyperglycemic Syndrome following Cardiogenic Shock
Authors: Katano Kosuke , Fuse Nozomi , Asano Yoshitaka , Osada Kimihiro , Miyabe Akira , Ishihara Ryuma , Tosaka Atsushi , Satoh Yuriko , Maeda Masako , Mizumura Taisuke , Oshima Akio , Tamamura Toshitake , Sugimura Yoichi
Published: November 2021

Osmotic demyelination syndrome (ODS) is a relatively rare disease that causes rapid demyelination, resulting in pontine and central nervous system damage with various symptoms, including impaired consciousness. It often occurs when hyponatremia is rapidly corrected. However, it can also occur when a normonatremic patient suddenly develops hypernatremia. A 51-year-old man developed cardiogenic shock with impaired consciousness, hyperCKemia, hypernatremia, and hyperglycemia. Osmotic demyelination syndrome secondary to rhabdomyolysis and hyperosmolar hyperglycemic syndrome was suspected. The patient’s fluid volume decreased because of osmotic diuresis caused by hyperglycemia, and the blood sodium level increased rapidly. The latter resulted in ODS, which in turn resulted in a prolonged disturbance of consciousness, from which he has not yet recovered. ODS has been reported as a serious complication of rapid correction of hyponatremia, although it also occurs when normonatremia leads to hypernatremia. This disease is difficult to diagnose, as magnetic resonance imaging (MRI) of the brain is often unremarkable several weeks after its onset. This case of ODS occurred when normonatremia led to hypernatremia, as a result of rhabdomyolysis and hyperosmolar hyperglycemic syndrome. Diagnosis was made based on the MRI brain findings.
The Vista of Application of Specific Anaphylaxis Accurate Diagnosis Based on DNA Single-Nucleotide Methylation Sites
Authors: Guo Xiangjie , Bai Yaqin , Guo Hualin , Wu Peng , Li Hao , Zhai Liqin , Feng Yan , Li Jianguo , Gao Cairong , Yun Keming
Published: November 2021

Anaphylaxis has rapidly spread around the world in the last several decades. Environmental factors seem to play a major role, and epigenetic marks, especially DNA methylation, get more attention. We discussed several GEO opening data classifications with TOP 100 specific methylation region values (normalized M-values on line) by machine learning, which are remarkable to classify specific anaphylaxis after monoallergen exposure. Then, we sequenced the whole-genome DNA methylation of six people (3 wormwood monoallergen atopic rhinitis patients and 3 normal-immune people) during the pollen season and analyzed the difference of the single nucleotide and DNA region. The results’ divergences were obvious (the differential single nucleotides were mostly distributed in nongene regions but the differential DNA regions of GWAS, on the other hand), which may have caused most single nucleotides to be concealed in the regions’ sequences. Therefore, we suggest that we should conduct more “pragmatic” and directly find special single-nucleotide changes after exposure to atopic allergens instead of complex correlativity. It is possible to try to use DNA methylation marks to accurately diagnose anaphylaxis and form a machine learning classification based on the single methylated CpGs.
Comparison of Herbal Agents with Sodium Hypochlorite as Root Canal Irrigant: A Systematic Review of In Vitro Studies
Authors: Teja Kavalipurapu Venkata , Janani Krishnamachari , Srivastava Kumar Chandan , Shrivastava Deepti , Jose Jerry , Marya Anand , Karobari Mohmed Isaqali
Published: November 2021

During endodontic treatment, eliminating microorganisms from the root canals should be considered with utmost importance. Before filling the canal, every effort should be made to ensure optimal shaping and adequate disinfection of the root canal system. This systematic review aimed to compare the efficacy of herbal agents with sodium hypochlorite (NaOCl) in reducing the microbial load while used as a root canal irrigant. The research question in the present study was to assess “Is there a significant difference in reducing microbial load comparing sodium hypochlorite (NaOCl) and herbal agents.” Electronic databases (PubMed, Scopus, and Web of Science) were searched from their start dates to November 2020 using strict inclusion and exclusion criteria and reviewed following PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. Only in vitro studies comparing herbal agents with NaOCl regarding antimicrobial efficiency were included. Two reviewers independently assessed the included article. 825 articles were obtained from an electronic database. Twenty papers were included for review of the full text. Eleven papers were excluded because they did not meet the inclusion criteria. Finally, nine articles were included in the systematic review. The present systematic review was at the in vitro level; therefore, the result cannot translate the exact clinical conditions. This systematic review concludes that herbal agents cannot be used as a main irrigant for canal disinfection.
Numerical Investigation on Vibration Performance of an Improved Switched Reluctance Machine with Double Auxiliary Slots
Authors: Gao Zhengyuan , Wang Shanming , An Zhiguo , Sun Pengfei
Published: November 2021

Considerable vibration and acoustic noise limit the further application of Switched Reluctance Machine (SRM) due to its structural characteristics and working principle. An improved SRM model with double auxiliary slots (DAS) was proposed, in which the direction of the magnetic line of force was adjusted, and the radial magnetic density in the air gap was reduced by changing the local tooth profiles of the stator and the rotor. The effects of initial rotor position and turn‐on angle and turn‐off angle on radial Electromagnetic Force (EMF) and maximum torque were investigated. The results indicate the radial EMF and torque increase significantly with the advancement of the turn‐on angle or the delay of the turn‐off angle. In the orthogonal experimental design, initial rotor position, turn‐on angle, and turn‐off angle were taken as the factors, and the optimal set of parameters that minimized radial EMF was determined according to a greater output torque. In contrast to conventional SRM, the radial EMF of the SRM with DAS significantly reduces when the optimal set is applied.
Control of Water Inrush from Longwall Floor Aquifers Using a Division Paste Backfilling Method
Authors: Chang Qingliang , Yao Xingjie , Ge Shiguo , Xu Ying , Sun Yuantian
Published: November 2021

Aiming at the problem of the safety mining problems of longwall paste filling working face under buildings on high confined water in the Daizhuang Coal Mine, the paste filling mining method was used. A series of theoretical analyses, numerical simulations, and field measurements were applied. The results showed that when the filling interval of the working face increases from 1.2 m to 3.6 m, no significant change is found in the depth of the perforated plastic zone of the floor strata. According to the types of water-conducting cracks in the floor strata of the working face 11607, the floor strata are divided into the floor intact area, the structure developed area, and the floor weak area. Based on that, the measures for preventing and controlling the floor failure in the paste filling working face are proposed. Furthermore, the failure depth of the floor of the test working face was detected by the on-site water injection method, and the results showed that the maximum failure depth of the floor of the test working face was about 3 m.
Deep Learning Technology in Pathological Image Analysis of Breast Tissue
Authors: Liu Yanan , Wang Xiaoyan , Li Jingyu , Hao Liguo , Zhao Tianyu , Zou He , Xu Dongbin
Published: November 2021

To explore the application value of the multilevel pyramid convolutional neural network (MPCNN) model based on convolutional neural network (CNN) in breast histopathology image analysis, in this study, based on CNN algorithm and softmax classifier (SMC), a sparse autoencoder (SAE) is introduced to optimize it. The sliding window method is used to identify cells, and the CNN + SMC pathological image cell detection method is established. Furthermore, the local region active contour (LRAC) is introduced to optimize it and the LRAC fine segmentation model driven by local Gaussian distribution is established. On this basis, the sparse automatic encoder is further introduced to optimize it and the MPCNN model is established. The proposed algorithm is evaluated on the pathological image data set. The results showed that the Acc value, F value, and Re value of pathological cell detection of CNN + SMC algorithm were significantly higher than those of the other two algorithms (

P

 < 0.05). The Dice, OL, Sen, and Spe values of pathological image regional segmentation of CNN algorithm were significantly higher than those of the other two algorithms, and the difference was statistically significant (

P

 < 0.05). The accuracy, recall, and F-measure of the optimized CNN algorithm for detecting breast histopathological images were 85.25%, 89.27%, and 80.09%, respectively. In the two databases with segmentation standards, the segmentation accuracy of MPCNN is 55%, 73.1%, 78.8%, and 82.1%. In the deep convolution network model, the training time of the MPCNN algorithm is about 80 min. It shows that when the feature dimension is low, the feature map extracted by MPCNN is more effective than the traditional feature extraction method.
Experimental Study of the Water-Sediment Two-Phase Seepage Characteristics in Rock Fractures and the Influencing Factors
Authors: Di Kui , Li Ming , Mao Xianbiao , Chen Zhanqing , Zhang Lianying , Han Yu
Published: November 2021

The water-sediment two-phase seepage in coarse fractures is one of the major factors to trigger mine water inrush disasters. Based on seepage mechanics theory, a mechanical model of the water-sediment two-phase seepage in coarse fractures was established. An experimental system was also developed to study the seepage characteristics under various conditions. The relationships between the absolute value of the pressure gradient and the seepage velocity were analyzed during the test process. The nonlinear characteristics of the seepage test were revealed. In addition, variation laws of the absolute value of the pressure gradient with the sand volume fraction and the sand particle size were illustrated, which were related to the loss of pressure during the particle movement. The impacts of the sand volume fraction and the sand particle size on the equivalent fluidity and

β

-factor of non-Darcy flow were discussed and analyzed. It was determined that the local turbulence was the main reason for the change of nonlinear variation characteristics of seepage parameters.
An Extensive Case of Merkel Cell Carcinoma due to Fright of COVID-19
Authors: Danielsen Maria , Høgsberg Trine , Lorentzen Henrik Frank , Rossau Ann-Kathrine Rahr German
Published: November 2021

Merkel cell carcinoma (MCC) is a subtype of nonmelanoma skin cancer (NMSC) with increasing incidence. Clinically, MCC resembles other far less-aggressive NMSCs, and the pathogenesis is still not understood completely. Rapid diagnosis and treatment are essential to improve overall survival. We present a case report of a 74-year-old female, who had noticed a rapidly growing, oozing tumor on her right flank. She was hesitant to contact the dermatology ward where she had regular checkups as she was afraid of contracting COVID-19. This was in the beginning of the COVID-19 pandemic. At presentation, she had a large exophytic MCC on her right flank and multiple metastases. The disease was at a late stage, and palliative care was the only treatment option left. With this case, we wish to report a rather uncharacteristic location and size of an MCC tumor and suggest that fear of the pandemic and the COVID-19 lockdown has impacted dramatically on attendance of symptomatic patients.
Metastasis of Testicular Choriocarcinoma in the Stomach, Complicated by the Development of Choriocarcinoma Syndrome
Authors: Podzolkov Valery I. , Pokrovskaya Anna E. , Tarzimanova Aida I. , Vetluzhskaya Maria V.
Published: November 2021

Choriocarcinoma (CC) is a very rare and aggressive neoplasm. The characteristic feature of this disease is a rapid hematogenous spread, mainly to the lungs and brain, which largely defines clinical signs of the disease and complicates the diagnosis. Gastrointestinal metastases are rare, and of those, only few cases with gastric location have been reported. There are publications describing choriocarcinoma syndrome (CCS). As a rule, it presents in patients with an advanced disease and is characterized by hemorrhage from metastatic foci, leading to hemoptysis and gastrointestinal bleeding. CCS development is associated with poor prognosis and high mortality. This article describes a case of testicular CC with rare few gastric metastases, complicated by CCS.
Modeling the Impact of Prehospital Triage on a True-Life Drip and Ship Mechanical Thrombectomy Urban Patient Cohort
Authors: Matsoukas Stavros , Giovanni Brian , Rubinstein Liorah , Majidi Shahram , Stein Laura K. , Fifi Johanna T.
Published: November 2021

Objective: The aim of the study was to model the effect of prehospital triage of emergent large vessel occlusion (ELVO) to endovascular capable center (ECC) on the timing of thrombectomy and intravenous (IV) thrombolysis using real-world data from a multihospital system. Methods: We selected a cohort of 77 consecutive stroke patients who were brought by emergency medical services (EMS) to a nonendovascular capable center and then transferred to an ECC for mechanical thrombectomy (MT) (“actual” drip and ship [DS] cohort). We created a hypothetical scenario (bypass model [BM]), modeling transfer of the patients directly to an ECC, based on patients’ initial EMS pickup address and closest ECC. Using another cohort of 73 consecutive patients, who were brought directly to an ECC by EMS and underwent endovascular intervention, we calculated mean door-to-needle and door-to-arterial puncture (AP) times (“actual” mothership [MS] cohort). Timings in the actual MS cohort and the actual DS cohort were compared to timings from the BM cohort. Results: Median first medical contact (FMC) to IV thrombolysis time was 87.5 min (interquartile range [IQR] = 38) for the DS versus 78.5 min (IQR = 8.96) for the BM cohort, with p = 0.1672. Median FMC to AP was 244 min (IQR = 97) versus 147 min (IQR = 8.96) (p < 0.001), and median FMC to TICI 2B+ time was 299 min (IQR = 108.5) versus 197 min (IQR = 8.96) (p < 0.001) for the DS versus BM cohort, respectively. Conclusions: Modeled EMS prehospital triage of ELVO patients’ results in shorter MT times without a change in thrombolysis times. As triage tools increase in sensitivity and specificity, EMS triage protocols stand to improve patient outcomes.
A Successful Chemoembolization of a Retroperitoneal Soft Tissue Sarcoma: A Case Report
Authors: David Filho Waldec Jorge , Uchiyama Angel Ayumi Tome , Marchon Catarina , Lopes Letícia Maria Duarte , Baccarin Ana Luísa de Castro , de Fina Bruna , dos Santos Ricardo Virgílio , Galastri Francisco Leonardo
Published: November 2021

Retroperitoneal sarcomas are rare entities. They have a tendency of growing slowly, rendering the patient apparently healthy for long periods of time, before diagnosis. Besides, they have a worse prognosis than sarcomas arising in extremities, with a higher local recurrence rate and lower 5-year survival rate. We describe a case of a 71-year-old male patient, who had a very well succeeded treatment of a large retroperitoneal sarcoma with the combination of chemoembolization, systemic chemotherapy, surgery, and radiation therapy. Initially, it was noticed in an incidental way he had a large retroperitoneal mass (15 cm × 10 cm × 9.2 cm) through magnetic resonance, when he was 63. The case was considered inoperable by the treating physicians. After neoadjuvant therapy, the residual tumor could be completely excised by the responsible surgeon. With a follow-up of >5 years, since the end of treatment, the patient remains in complete remission and, probably, cured from his illness. Large retroperitoneal sarcomas are still a great challenge for oncologists. According to the medical literature, chemoembolization can benefit some patients, but most of them in a palliative setting. In our report, we believe its contribution was critical for a great outcome. In selected cases, it is possible this procedure may be an additional therapeutic modality, as part of a multidisciplinary approach.
Cultura e território - aproximando saberes
Authors: Rodrigues Luiz Augusto
Published: November 2021

Este texto propõe bases para a compreensão e articulação das políticas culturais com a questão da produção do espaço urbano e como tais políticas são nele praticadas. Preocupa-se, além disso, em entender cultura e território como direitos de acesso, de fruição e de produção. O artigo ilustra a discussão com materializações que vêm ocorrendo em muitas cidades brasileiras, focalizando as encontradas na cidade de Niterói, no Rio de Janeiro.
Gestão cultural nos próximos dez anos
Authors: Rubim Antonio Albino Canelas , Vilutis Luana , Oliveira Gleise Cristiane Ferreira de
Published: November 2021

Após o reconhecimento da complexidade e das dificuldades de imaginar um futuro na atualidade brasileira, devido a um conjunto de fatores associados à pandemia e ao pandemônio vividos no país, este texto busca traçar algumas inferências acerca do futuro da cultura e sua gestão no Brasil. Nesse sentido, são analisados quatro horizontes, considerados relevantes e conectados aos processos em curso na sociedade brasileira: a instalação da sociabilidade contemporânea; a possível emergência do federalismo cultural; as exigências atuais da transversalidade da cultura, provenientes do acionamento do conceito ampliado de cultura; e o entendimento de uma ideia de sustentabilidade da cultura não reduzida à dimensão meramente econômica. O exercício de imaginação desenvolvido dialoga com dilemas presentes na conjuntura brasileira e, em especial, com seus desdobramentos nos próximos anos, a fim de não ficar prisioneiro dos tempos sombrios atuais.
Produção e consumo cultural na pandemia da covid-19: novas perspectivas para um festival de teatro em Passos
Authors: Viana Guilherme Vilela , Borges Rosangela Ferreira de Carvalho
Published: November 2021

Este artigo tem como objetivo apresentar como se constitui a relação entre produção e consumo cultural no Festival Nacional de Teatro da Cidade de Passos (FNTP), no estado de Minas Gerais, durante o ano de 2020. Há no festival um deslocamento das apresentações dos espetáculos na “praça pública presencial” para a “praça pública virtual”, num processo de produção, circulação e consumo de cultura por meio de plataformas virtuais, como o YouTube, Instagram e Facebook, devido a pandemia da covid-19.
O papel da Ancine nas políticas públicas para o audiovisual brasileiro
Authors: Ikeda Marcelo Gil
Published: November 2021

Este artigo apresenta um amplo panorama das políticas para o setor audiovisual implementadas pela Agência Nacional do Cinema em 20 anos de atividade (2001-2021). Em primeiro lugar, serão analisadas sua criação como uma agência reguladora e as limitações para sua atuação, impostas na lei que a formou. Em seguida, será avaliada a ampliação do escopo da agência sob a gestão de Manoel Rangel, com a aprovação das Leis nº 11.437/06, 12.485/11 e 12.599/12, e serão discutidos os impasses das gestões Leitão-Castro e Braga. Por fim, serão comentados os principais desafios à gestão pública do audiovisual para os próximos anos.
Etnomídia Indígena como narrativa das resistências
Authors: Souza Vinicius Guedes Pereira de , Costa Raylson Chaves
Published: November 2021

O presente artigo, por meio de pesquisa bibliográfica no campo da comunicação decolonial com práticas etnomidiáticas indígenas e da análise imagética de produto audiovisual, pretende contribuir para as discussões sobre as produções próprias do Povo Terena em Mato Grosso do Sul (MS) e seu papel no combate às estratégias para invisibilizar a presença de seus corpos no estado. O texto traz apontamentos feitos a partir das provocações levantadas pelo filme “Primeira Cavalgada Indígena – Grito dos Excluídos”, do realizador Angelo Terena, que trabalha com audiovisual desde os 15 anos de idade, criando imagens autônomas sobre seu povo. O filme mostra reivindicações da comunidade no dia do “descobrimento do Brasil”, por meio de uma manifestação na rodovia que dá acesso à aldeia, reunindo crianças, jovens e anciões.
Plano Nacional de Cultura e Desenvolvimento: recuperando o planejamento das políticas culturais
Authors: Carvalho Amanda Salgado e , Oliveira Danilo Júnior de
Published: November 2021

O presente artigo se debruça sobre a bibliografia e o exercício analítico crítico do conceito de desenvolvimento cultural brasileiro e da própria razão de ser do Estado na condução do planejamento das políticas culturais. Tal incursão é acompanhada do debate da Medida Provisória nº 1.012/2020, que prorrogou a vigência do Plano Nacional de Cultura (PNC) até o ano de 2022. O objetivo é restabelecer a vital importância do PNC na garantia dos direitos culturais, como a diversidade cultural, a cidadania e as identidades culturais, e sobretudo do próprio desenvolvimento cultural. O artigo também pretende analisar criticamente o PNC, realizando breves diagnósticos dos principais entraves à efetiva implementação de políticas culturais coordenadas. Entendemos que tal investigação crítica ultrapassa o território dos estudos culturais e situa-se na análise das problemáticas históricas do Estado brasileiro.
Verba, evento e voto: a emenda parlamentar na gestão cultural, na produção de eventos e no cenário político do Brasil
Authors: Mazzetti Bárbara Machado , Gama Rodrigo de Almeida
Published: November 2021

O uso de verbas públicas na gestão cultural e na produção de eventos, por meio de emendas parlamentares, é o objeto de reflexão deste artigo. Busca-se discutir as políticas públicas e a regulamentação dos setores culturais e criativos, assim como a cidadania, diversidade e o direito cultural. Este artigo partiu da revisão bibliográfica sobre a Constituição Federal e de temas como emendas parlamentares, lazer, cultura e cidade, com vistas à compreensão de como são regulamentadas tais matérias em âmbito federal, estadual e municipal. O recorte de análise e reflexão escolhido está baseado no alto volume de eventos evangélicos viabilizados via emenda parlamentar e produzidos pela empresa público-privada São Paulo Turismo, trazendo à luz reflexões pertinentes sobre o uso da emenda parlamentar para fins religiosos, ideológicos e políticos, e como tal cenário influencia a política no país.
A cultura como valor na imagem de lugares: a influência cultural do Brasil
Authors: Coelho Neto Ernani , Lhamas Fernando Antônio de Melo Pereira , Ferreira Fábio Almeida
Published: November 2021

Este artigo visa posicionar o Brasil do ponto de vista de sua influência cultural. Para tanto, utilizamos dados de estudo viabilizados pela parceria entre o BAV Group, a Wharton School da Universidade da Pensilvânia e o U.S. News & World Report. A partir desses dados, procedeu-se com uma análise de cluster que colocou a influência cultural do Brasil em perspectiva e em relação aos países do estudo original, ao cluster a que o Brasil pertence e à América do Sul, destacando os elementos em que o país teve melhor ou pior desempenho. Os resultados foram confrontados com alguns dos conceitos discutidos na revisão de literatura, que focou nas discussões sobre as imagens de lugar e de cultura como valores, isto é, meios de exploração da conexão entre as conclusões e as possibilidades de desenvolvimento para o Brasil.
Responsáveis por projeto financiado pelo Fundo Internacional para a Diversidade Cultural contam suas impressões sobre a 13ª Sessão do Comitê Intergovernamental da Convenção da Diversidade Cultural
Authors: Dupin Giselle
Published: November 2021

Pesquisadores que formam um coletivo dedicado à pesquisa e formação no campo cultural e integram um grupo de estudos em cultura no Núcleo de Desenvolvimento do Centro Brasileiro de Análise e Planejamento, em São Paulo, falam nesta entrevista sobre o projeto “Fortalecendo Redes Culturais”, que desenvolveram em 2018 e 2019 com recursos do Fundo Internacional para a Diversidade Cultural da Organização das Nações Unidas para a Educação, a Ciência e a Cultura, com o objetivo de fortalecer as redes e a interlocução entre atores da sociedade civil e governos locais, de modo a reforçar cadeias de produção cultural. Eles apresentaram os resultados do trabalho ao Comitê Intergovernamental da Convenção da Diversidade Cultural, reunido em Paris em fevereiro de 2020, e comentam os principais temas abordados no encontro
Being together, doing together and going forward together: echoes from France’s cultural third places in times of covid-19
Authors: Magkou Matina , Pélissier Maud
Published: November 2021

In France, as in many other countries, cultural production and management practices are facing numerous transformations. Being understood as experimental; intermediary cultural spaces that redefine the relationship of culture with the public and the local territory, cultural third places provide a vivid example of this changing reality. Before the current health crisis, the social role of these constructs in regard to the local context were made even more visible. On a first level, this article aims to present the uniqueness of those spaces in the French context. Secondly, it describes the preliminary results of an exploratory study analyzing the reactions and adjustments to working dynamics of a number of spaces in the PACA region, in France, during the first months of the pandemic. Finally, we propose further lines of research.
Capacidades de coordinación interjurisdiccional de políticas culturales: aportes desde un estudio de caso al análisis de políticas públicas destinadas a la cultura en la Argentina contemporánea
Authors: Morán Franco
Published: November 2021

Este trabajo reflexiona sobre las políticas públicas culturales, en particular aquellas destinadas a las artes escénicas, como una manera de ejemplificar y señalar la importancia de la coordinación entre las esferas estatales a la hora de una más efectiva ejecución de las mismas. Consideramos que la coordinación entre los niveles de gobierno es un medio para lograr políticas que den respuesta integrales a los problemas que emergen en el campo de la cultura, y debe ser analizada en mayor detenimiento con el objetivo de poder comprender en qué manera resulta clave no solo en la implementación, sino también en el diseño de futuras políticas. Será objeto de observación a modo de ejemplo explicativo la Fiesta Provincial del Teatro de la provincia de Córdoba, realizada por el Instituto Nacional del Teatro, principal organismo ejecutor de las políticas públicas para las artes escénicas en Argentina. Así, se analizarán las capacidades administrativas y políticas del Instituto, para comprender maneras posibles de desarrollar una sinergia entre los diversos actores, que contribuya a superar la mera suma de partes, y en su lugar incorporar acciones que permitan gestionar respuestas cada vez más integradas e integrales.