bluuebunny/crossref_metadata_2025 huggingface dataset:
Ultrasound Measurement of Skeletal Muscle Contractile Parameters Using Flexible and Wearable Single-Element Ultrasonic Sensor
Authors: AlMohimeed Ibrahim , Ono Yuu
Published: June 2020

Skeletal muscle is considered as a near-constant volume system, and the contractions of the muscle are related to the changes in tissue thickness. Assessment of the skeletal muscle contractile parameters such as maximum contraction thickness ( T h ), contraction time ( T c ), contraction velocity ( V c ), sustain time ( T s ), and half-relaxation ( T r ) provides valuable information for various medical applications. This paper presents a single-element wearable ultrasonic sensor (WUS) and a method to measure the skeletal muscle contractile parameters in A-mode ultrasonic data acquisition. The developed WUS was made of double-layer polyvinylidene fluoride (PVDF) piezoelectric polymer films with a simple and low-cost fabrication process. A flexible, lightweight, thin, and small size WUS would provide a secure attachment to the skin surface without affecting the muscle contraction dynamics of interest. The developed WUS was employed to monitor the contractions of gastrocnemius (GC) muscle of a human subject. The GC muscle contractions were evoked by the electrical muscle stimulation (EMS) at varying EMS frequencies from 2 Hz up to 30 Hz. The tissue thickness changes due to the muscle contractions were measured by utilizing a time-of-flight method in the ultrasonic through-transmission mode. The developed WUS demonstrated the capability to monitor the tissue thickness changes during the unfused and fused tetanic contractions. The tetanic progression level was quantitatively assessed using the parameter of the fusion index (FI) obtained. In addition, the contractile parameters ( T h , T c , V c , T s , and T r ) were successfully extracted from the measured tissue thickness changes. In addition, the unfused and fused tetanus frequencies were estimated from the obtained FI-EMS frequency curve. The WUS and ultrasonic method proposed in this study could be a valuable tool for inexpensive, non-invasive, and continuous monitoring of the skeletal muscle contractile properties.
Machine Learning Modeling of Wine Sensory Profiles and Color of Vertical Vintages of Pinot Noir Based on Chemical Fingerprinting, Weather and Management Data
Authors: Fuentes Sigfredo , Torrico Damir D. , Tongson Eden , Gonzalez Viejo Claudia
Published: June 2020

Important wine quality traits such as sensory profile and color are the product of complex interactions between the soil, grapevine, the environment, management, and winemaking practices. Artificial intelligence (AI) and specifically machine learning (ML) could offer powerful tools to assess these complex interactions and their patterns through seasons to predict quality traits to winegrowers close to harvest and before winemaking. This study considered nine vintages (2008–2016) using near-infrared spectroscopy (NIR) of wines and corresponding weather and management information as inputs for artificial neural network (ANN) modeling of sensory profiles (Models 1 and 2 respectively). Furthermore, weather and management data were used as inputs to predict the color of wines (Model 3). Results showed high accuracy in the prediction of sensory profiles of vertical wine vintages using NIR (Model 1; R = 0.92; slope = 0.85), while better models were obtained using weather/management data for the prediction of sensory profiles (Model 2; R = 0.98; slope = 0.93) and wine color (Model 3; R = 0.99; slope = 0.98). For all models, there was no indication of overfitting as per ANN specific tests. These models may be used as powerful tools to winegrowers and winemakers close to harvest and before the winemaking process to maintain a determined wine style with high quality and acceptability by consumers.
Automated Calibration System for Digital Multimeters Not Equipped with a Communication Interface
Authors: Grzeczka Grzegorz , Klebba Maciej
Published: June 2020

This article is focused on the calibration of digital multimeters, in which the concept and practical solutions for stations with software for automatic calibration are presented. This paper also presents the general structure of the measuring system, the application scheme, and the technical implementation of measuring stations, together with the software.
Dry Electrodes for Human Bioelectrical Signal Monitoring
Authors: Fu Yulin , Zhao Jingjing , Dong Ying , Wang Xiaohao
Published: June 2020

Bioelectrical or electrophysiological signals generated by living cells or tissues during daily physiological activities are closely related to the state of the body and organ functions, and therefore are widely used in clinical diagnosis, health monitoring, intelligent control and human-computer interaction. Ag/AgCl electrodes with wet conductive gels are widely used to pick up these bioelectrical signals using electrodes and record them in the form of electroencephalograms, electrocardiograms, electromyography, electrooculograms, etc. However, the inconvenience, instability and infection problems resulting from the use of gel with Ag/AgCl wet electrodes can’t meet the needs of long-term signal acquisition, especially in wearable applications. Hence, focus has shifted toward the study of dry electrodes that can work without gels or adhesives. In this paper, a retrospective overview of the development of dry electrodes used for monitoring bioelectrical signals is provided, including the sensing principles, material selection, device preparation, and measurement performance. In addition, the challenges regarding the limitations of materials, fabrication technologies and wearable performance of dry electrodes are discussed. Finally, the development obstacles and application advantages of different dry electrodes are analyzed to make a comparison and reveal research directions for future studies.
An Integrated Gold-Film Temperature Sensor for In Situ Temperature Measurement of a High-Precision MEMS Accelerometer
Authors: Song Xiaoxiao , Liu Huafeng , Fang Yanyan , Zhao Chun , Qu Ziqiang , Wang Qiu , Tu Liang-Cheng
Published: June 2020

Temperature sensors are one of the most important types of sensors, and are employed in many applications, including consumer electronics, automobiles and environmental monitoring. Due to the need to simultaneously measure temperature and other physical quantities, it is often desirable to integrate temperature sensors with other physical sensors, including accelerometers. In this study, we introduce an integrated gold-film resistor-type temperature sensor for in situ temperature measurement of a high-precision MEMS accelerometer. Gold was chosen as the material of the temperature sensor, for both its great resistance to oxidation and its better compatibility with our in-house capacitive accelerometer micro-fabrication process. The proposed temperature sensor was first calibrated and then evaluated. Experimental results showed the temperature measurement accuracy to be 0.08 °C; the discrepancies among the sensors were within 0.02 °C; the repeatability within seven days was 0.03 °C; the noise floor was 1 mK/√Hz@0.01 Hz and 100 μK/√Hz@0.5 Hz. The integration test with a MEMS accelerometer showed that by subtracting the temperature effect, the bias stability within 46 h for the accelerometer could be improved from 2.15 μg to 640 ng. This demonstrates the capability of measuring temperature in situ with the potential to eliminate the temperature effects of the MEMS accelerometer through system-level compensation.
Welding Seam Trajectory Recognition for Automated Skip Welding Guidance of a Spatially Intermittent Welding Seam Based on Laser Vision Sensor
Authors: Li Gaoyang , Hong Yuxiang , Gao Jiapeng , Hong Bo , Li Xiangwen
Published: June 2020

To solve the problems of low teaching programming efficiency and poor flexibility in robot welding of complex box girder structures, a method of seam trajectory recognition based on laser scanning displacement sensing was proposed for automated guidance of a welding torch in the skip welding of a spatially intermittent welding seam. Firstly, a laser scanning displacement sensing system for measuring angles adaptively is developed to detect corner features of complex structures. Secondly, a weld trajectory recognition algorithm based on Euclidean distance discrimination is proposed. The algorithm extracts the shape features by constructing the characteristic triangle of the weld trajectory, and then processes the set of shape features by discrete Fourier analysis to solve the feature vector used to describe the shape. Finally, based on the Euclidean distance between the feature vector of the test sample and the class matching library, the class to which the sample belongs is identified to distinguish the weld trajectory. The experimental results show that the classification accuracy rate of four typical spatial discontinuous welds in complex box girder structure is 100%. The overall processing time for weld trajectory detection and classification does not exceed 65 ms. Based on this method, the field test was completed in the folding special container production line. The results show that the system proposed in this paper can accurately identify discontinuous welds during high-speed metal active gas arc welding (MAG) welding with a welding speed of 1.2 m/min, and guide the welding torch to automatically complete the skip welding, which greatly improves the welding manufacturing efficiency and quality stability in the processing of complex box girder components. This method does not require a time-consuming pre-welding teaching programming and visual inspection system calibration, and provides a new technical approach for highly efficient and flexible welding manufacturing of discontinuous welding seams of complex structures, which is expected to be applied to the welding manufacturing of core components in heavy and large industries such as port cranes, large logistics transportation equipment, and rail transit.
The Role of Standards-Related Capacity Building on the Sustainable Development of Developing Countries: Focusing on the Korea’s Standards-Related AfT Case in Bolivia
Authors: Moon Seungyeon , Lee Heesang
Published: June 2020

Many countries provide standards-related aid for trade (AfT) to developing countries in association with the United Nations Sustainable Development Goals (SDGs), such as sharing their experiences and providing training or infrastructure. Regarding the influence of standards-related AfT on the sustainable development of developing countries, we studied Korea’s standards-related AfT program to examine the role and features of standards-related AfT in terms of standards-related capacity building. In this study, we conducted a single case study with a focus on Korea’s standards-related AfT in Bolivia using qualitative descriptive analysis. The result indicated that Korea’s standards-related AfT is associated with three pillars of sustainable development in terms of standards-related capacity, namely standardization, conformity assessment, and metrology, and can be summarized with two key tasks: building testing infrastructure and improving Technical Barriers to Trade (TBT) capacity. However, several limitations were found in Korea’s standards-related capacity building activities, such as limited scope, limited target of the program, and the lack of activities for building institutional foundations for standards-related capacity.
Predictability of OTC Option Volatility for Future Stock Volatility
Authors: Kim Jungmu , Park Yuen Jung
Published: June 2020

This study explores the information content of the implied volatility inferred from stock index options in the over-the-counter (OTC) market, which has rarely been studied in the literature. Using OTC calls, puts, and straddles on the KOSPI 200 index, we find that implied volatility generally outperforms historical volatility in predicting future realized volatility, although it is not an unbiased estimator. The results are more apparent for options with shorter maturity. However, while implied volatility has strong predictability during normal periods, historical volatility is superior to implied volatility during a period of crisis due to the liquidity contraction of the OTC options market. This finding suggests that the OTC options market can play a role in conveying important information to predict future volatility.
Reflection of Digitalization on Business Values: The Results of Examining Values of People Management in a Digital Age
Authors: Blštáková Jana , Joniaková Zuzana , Jankelová Nadežda , Stachová Katarína , Stacho Zdenko
Published: June 2020

The European Union (European Parliament) understands industry 4.0 as a term for an environment of fast transformations of production systems and products. The basic characteristic of the change in the methods of creating added value in the conditions of the fourth industrial revolution is digitalization. Digitalization changes people management in two stages. The first stage is the adaptation of systems to the integration of physical inputs into digital systems, and the second stage is the redefinition of values for the internal and external customer. The purpose of this paper is to examine the content of the first digitalization stage and its impact on the transformation of values of corporate people management in the second stage of digitalization. The study published in this paper points out the level of digitalization applied towards the internal and external customer. The research results verify relations in the portfolio of corporate value and prove their present implementation of digitalization and its and importance for the future sustainability of the business. The study confirmed the independence of the levels of corporate digitalization and companies’ value portfolios. Furthermore, the study proved the universal nature of corporate value orientation, irrespective of the size, business focus or performance of the people management system. Meaningfulness, communication and cooperation dominate in terms of importance for business sustainability. The results of the study in Slovakia support the opinions of published foreign research, which emphasize the importance of introducing technological innovations aimed at employees to a much greater extent.
Zearalenone-Induced Interaction between PXR and Sp1 Increases Binding of Sp1 to a Promoter Site of the eNOS, Decreasing Its Transcription and NO Production in BAECs
Authors: Lee Hyeon-Ju , Park Jung-Hyun , Oh Se-Young , Cho Du-Hyong , Kim Suji , Jo Inho
Published: June 2020

Zearalenone (ZEN) is a non-steroidal mycotoxin that has various toxicological impacts on mammalian health. Here, we found that ZEN significantly affected the production of nitric oxide (NO) and the expression of endothelial NO synthase (eNOS) of bovine aortic endothelial cells (BAECs). A promoter analysis using 5′-serially deleted human eNOS promoter revealed that the proximal region (−135 to +22) was responsible for ZEN-mediated reduction of the human eNOS promoter activity. This effect was reversed by mutation of two specificity protein 1 (Sp1) binding elements in the human eNOS promoter. A chromatin immunoprecipitation assay revealed that ZEN increased Sp1 binding to the bovine eNOS promoter region (−113 to −12), which is homologous to −135 to +22 of the human eNOS promoter region. We also found that ZEN promoted the binding of the pregnane X receptor (PXR) to Sp1 of the bovine eNOS, consequently decreasing eNOS expression. This reduction of eNOS could have contributed to the decreased acetylcholine-induced vessel relaxation upon ZEN treatment in our ex vivo study using mouse aortas. In conclusion, our data demonstrate that ZEN decreases eNOS expression by enhancing the binding of PXR-Sp1 to the eNOS promoter, thereby decreasing NO production and potentially causing vessel dysfunction.
Multi-Laboratory Comparison of Next-Generation to Sanger-Based Sequencing for HIV-1 Drug Resistance Genotyping
Authors: Parkin Neil T. , Avila-Rios Santiago , Bibby David F. , Brumme Chanson J. , Eshleman Susan H. , Harrigan P. Richard , Howison Mark , Hunt Gillian , Ji Hezhao , Kantor Rami , Ledwaba Johanna , Lee Emma R. , Matías-Florentino Margarita , Mbisa Jean L. , Noguera-Julian Marc , Paredes Roger , Rivera-Amill Vanessa , Swanstrom Ronald , Zaccaro Daniel J. , Zhang Yinfeng , Zhou Shuntai , Jennings Cheryl
Published: June 2020

Next-generation sequencing (NGS) is increasingly used for HIV-1 drug resistance genotyping. NGS methods have the potential for a more sensitive detection of low-abundance variants (LAV) compared to standard Sanger sequencing (SS) methods. A standardized threshold for reporting LAV that generates data comparable to those derived from SS is needed to allow for the comparability of data from laboratories using NGS and SS. Ten HIV-1 specimens were tested in ten laboratories using Illumina MiSeq-based methods. The consensus sequences for each specimen using LAV thresholds of 5%, 10%, 15%, and 20% were compared to each other and to the consensus of the SS sequences (protease 4–99; reverse transcriptase 38–247). The concordance among laboratories’ sequences at different thresholds was evaluated by pairwise sequence comparisons. NGS sequences generated using the 20% threshold were the most similar to the SS consensus (average 99.6% identity, range 96.1–100%), compared to 15% (99.4%, 88.5–100%), 10% (99.2%, 87.4–100%), or 5% (98.5%, 86.4–100%). The average sequence identity between laboratories using thresholds of 20%, 15%, 10%, and 5% was 99.1%, 98.7%, 98.3%, and 97.3%, respectively. Using the 20% threshold, we observed an excellent agreement between NGS and SS, but significant differences at lower thresholds. Understanding how variation in NGS methods influences sequence quality is essential for NGS-based HIV-1 drug resistance genotyping.
Indolbutyric Acid (IBA) in the african mahogany (Khaya grandifoliola C. DC.) cuttings and mini-cuttings development
Authors: Da Silva Marília Gabriela , Zaidan Úrsula R. , Borges Canrobert T. , Da Silva João Augusto , Resende Rafael T. , Venturoli Fábio , Pires Patrícia P.
Published: June 2020

The current expansion of the forest sector in the Cerrado (Brazilian Savannah), especially of the species of genus Khaya sp. (African Mahogany), requires several silvicultural and technical studies of various natures. Seed and clonal propagation enable noble and vigorous seedlings, which will future compose commercial plantations aiming timber production. The species Khaya grandifoliola C. DC is considered of distinct wood characteristics and with great economic potential. The objective of this work was to evaluate the effect of different indolbultyric acid (IBA) concentrations – between 0 and 12 g.L-1– on the rooting of K. grandifoliola cuttings and mini-cuttings. The experiment was carried out at the "Mudas Nobres" private nursery, located in Goiânia (Goiás State, Brazil). The experiment was conducted in a completely randomized design in a 5 × 2 factorial scheme. Each treatment consisted of four replications with 20 cuttings (clonal origin) or mini-cuttings (seed origin) per repetition. Models were also applied to estimate the number of shoots in clonal cuttings, according to the data observed in seed mini-cuttings. The results indicate that IBA has the opposite effect on the two evaluated types of propagule origin, being more suitable for seed mini-cuttings (should apply 8 g.L-1of IBA) and less for clonal cuttings (should not apply IBA). If a standard application must be recommended (to cuttings either mini-cuttings), the most appropriate concentration is 6 g.L-1of IBA.
REEL KONUT FİYATLARI İLE EKONOMİ POLİTİKALARI BELİRSİZLİĞİ ARASINDAKİ İLİŞKİ: GÜNEY KORE ÖRNEĞİ
Authors: ÇETİN Mümin Atalay , YAMAN İlker , BAKIRTAŞ İbrahim
Published: June 2020

Özellikle 2008 yılında yaşanan Küresel Finansal Kriz ile birlikte hem ulusal hem de küresel ölçekte konut piyasasının makroekonomik istikrar üzerindeki etkileri araştırmacılar ve politika yapıcılar tarafından daha net bir biçimde kavranmıştır. Bu bağlamda ekonomi politikalarındaki belirsizlikler başta olmak üzere farklı belirsizlik türlerinin konut piyasasını etkilediği görülmüştür. Bu çalışmanın temel amacı Güney Kore’de 2001-2018 yılları arasında reel konut fiyatları ile ekonomi politikaları belirsizliği arasındaki ilişkiyi VAR analizi yardımıyla ortaya koymaktır. Çalışmanın ampirik bulguları Güney Kore’de ekonomi politikalarındaki belirsizliklerin reel konut fiyatlar değişimlerini açıklamada etkin olduğunu göstermektedir. Ayrıca reel konut fiyatları ile ekonomi politikası belirsizliği arasında çift yönlü bir nedensellik ilişkisi olduğu tespit edilmiştir.
PENGARUH KARAKTERISTIK PERUSAHAAN, STRUKTUR KEPEMILIKAN DAN KUALITAS AUDIT TERHADAP MANAJEMEN LABA
Authors: FELICYA CINDY , SUTRISNO PAULINA
Published: June 2020

Tujuan  dilakukannya penelitian ini adalah untuk mengetahui hubungan antara karakteristik perusahaan yang meliputi pertumbuhan perusahaan, kinerja perusahaan, ukuran perusahaan, umur perusahaan, ukuran dewan komisaris, serta struktur kepemilikan berupa kepemilikan manajerial, kepemilikan institusional dan kualitas audit terhadap manajemen laba pada perusahaan non keuangan yang terdaftar di Bursa Efek Indonesia. Penelitian ini menggunakan sampel sebanyak 139 perusahaan non keuangan yang terdaftar di Bursa Efek Indonesia yang dipilih dengan menggunakan metode purposive sampling selama periode 2016 sampai 2018 dengan total observasi sebanyak 417 data. Penelitian ini menggunakan analisis regresi linear berganda. Hasil dari penelitian ini menunjukan bahwa karakteristik perusahaan seperti pertumbuhan perusahaan dan kinerja perusahaan memiliki pengaruh terhadap manajemen laba, sedangkan variabel independen lainnya seperti ukuran perusahaan, umur perusahaan, ukuran dewan komisaris, kepemilikan manajerial, kepemilikan institusional dan kualitas audit tidak memiliki pengaruh terhadap manajemen laba perusahaan.
A história do Outro em Gênesis de Sebastião Salgado:
Authors: Feldhues Marina , Júnior José Afonso Da Silva
Published: June 2020

Neste trabalho propomos realizar uma leitura anticolonial do capítulo Tribos de Irian Jaya, Indionesia do livro Gênesis de Sebastião Salgado. A partir da matéria da obra, isto é, da narrativa verbovisual do capítulo e dos textos de apresentação do livro, e na companhia de autores da crítica anticolonial, como Denise Ferreira da Silva e Ariella Aïsha Azoulay, pretendemos refletir sobre como os indivíduos com os quais o fotógrafo esteve em contato para a realização deste capítulo são figurados no discurso da obra.
PREVENTOLOGICAL PROVISION OF SAFE BEHAVIOR OF STUDENT YOUTH
Authors: BAUER Irina I. , KRUTKO Inna S. , PONOMAREV Aleksander V.
Published: June 2020

This article discusses the basics of preventological work to ensure the safe behavior of a young person. The interconnection of the concepts of safe behavior and its prevention, as well as the scope of their application is shown. The article presents the author's levels of safe behavior of the personality of a young man, measurements are taken and a program on preventology is described.
Çocuklarla Felsefe Programının Çocukların İnsani Değerlere Yönelik Tutumları Üzerindeki Etkililiği
Authors: MEHDİYEV Gülsüm , TOZDUMAN YARALI Kevser
Published: June 2020

Bu araştırmanın amacı; çocuklarla felsefe programının yedinci sınıfa devam eden çocukların insani değerlere yönelik tutumları üzerindeki etkisini incelemektir. Araştırmada karma model kullanılmıştır. Araştırmanın nicel boyutunda deneysel desen oluşturulmuş ve veri toplama aracı olarak “İnsani Değerler Ölçeği” kullanılmıştır. Nitel boyuttaki verilerin toplanmasında doküman incelemesi ve odak grup görüşmesinden yararlanılmıştır.  Araştırmanın çalışma grubu 20 çocuktan oluşmuştur. Deney grubundaki çocuklarla 10 hafta süren felsefe eğitim programı uygulanmıştır. Nicel verilerin analizinde, Mann Whitney U testi ve Wilcoxon testi uygulanmıştır. Nitel verilerin analizinde doküman incelemesi için betimsel analiz, odak grup görüşmesi için içerik analizi yapılmıştır. Çalışmanın sonucunda felsefe eğitiminin çocukların insani değerlere yönelik tutumlarını olumlu etkilediği bulunmuştur.
ANTAGONISTIC ACTIVITY OF BACILLUS SUBTILIS STRAINS, PERSPECTIVE COMPONENTS FOR CREATION OF ROLLED HIGH-MOISTURE CORN PRESERVATIVES
Authors: Kravchenko N. О. , Perederii M. H.
Published: June 2020

Antagonistic activity of Bacillus subtilis strains, perspective components for creation of rolled highmoisture corn preservatives was investigated. Investigated B. subtilis strains showed antagonistic activityagainst pathogenic and conditionally-pathogenic microorganisms. Test-cultures of Escherichia coli andStaphylococcus аureus showed the highest sensibility to the antagonistic B. subtilis strains. B. subtilisstrains B6у and В1 showed the best ability to inhibit the growth of pathogenic and conditionallypathogenic microorganisms.Flora genus composition on rolled high-moisture corn grain was studied. Flora of rolled highmoisture corn grain is presented by the genus Penicillium in 52% of cases, a remainder consists of thegenus species Fusarium (13%), Rhisopus (13%), Gliocladium (11%), and Mucor (11%). Abovementioned micromycetes showed high sensibility towards investigated B. subtilis strains. Antagonistic B.subtilis strains showed the highest rate of antifungal activity against test-cultures of micromycetes of thegenus species Mucor, Rhisopus, and Penicillium.
国际医疗部护理工作中团队合作精神的作用研究
Authors: 周 艳霞 , 张 希朦 , 贺 新新
Published: June 2020

探究国际医疗部护理工作中，团队合作精神的作用。首先明确团队相关概念，以及国际医疗部及其护理工作的特征，在此基础上分析团队合作精神在国际医疗部护理工作中发挥的作用，明确团队合作精神对于护理组织效能、护理人员个人发展及归属感与职业自豪感产生的积极影响。
家庭护理干预对老年人高血压合并糖尿病患者用药依从性的影响
Authors: 韦 晓春 , 蓝 秋乔 , 杨 静
Published: June 2020

目的：研究老年高血压合并糖尿病患者接受家庭护理干预的效果。方法：选择在我院进行治疗的 76 例老年高血压合并糖尿病患者，通过随机分组法分成对照组和观察组，平均每组 38 例。对照组实施常规老年慢性病护理；观察组在常规护理的基础上，增加实施家庭护理干预。对比两组护理干预前后用药依从性和生活质量评分水平、对护理服务的满意度、不良事件发生情况。结果：观察组患者护理干预前后用药依从性和生活质量评分水平的改善幅度大于对照组；对护理服务的满意度达到 94.7%，高于对照组的 81.6%；不良事件仅 1 例，少于对照组的 7 例。差异有统计学意义（P＜0.05）。结论：老年高血压合并糖尿病患者接受家庭护理干预，能够大幅度改善用药依从性和生活质量，减少不良事件的发生，从而提高患者对护理服务的满意度。
管道护理过程中不良事件的原因和管理对策
Authors: 张 丹
Published: June 2020

目的：分析我院在管道护理工作中不良事件发生的原因和解决对策。方法：将我院在过去一年内发生的管道护理不良事件进行汇总上报，然后结合相关的临床资料进行分析。结果：在上报的 15 起管道护理不良事件中，有 10 起是患者自己拔出了管道，5 起是因为管道自行滑脱。结论：要想降低管道护理工作中不良事件的发生率，需要提高护理人员的凤险意识，完善各项护理制度并进行有效的落实，加强对患者的安全管理，以此来保障患者的护理安全。
妇产科护理风险因素分析及其管理策略
Authors: 苏 楠
Published: June 2020

目的：分析妇产科护理风险及其管理策略。方法：将我院 2018 年 8 月到 2019 年 6月收治的 158 名产妇作为研究对象，将其随机分成对照组和观察组，其中，针对对照组产妇实行常规护理，针对观察组产妇在常规护理的基础上实行风险管理，分析产妇的护理不良问题发生率和满意度。结果：观察组产妇的不良问题发生率明显低于对照组，同时护理满意度高于对照组。结论：风险管理模式在妇产科护理中的应用效果明显，值得临床推广。
护理管理在医院感染控制中的作用研究
Authors: 陈 业菲
Published: June 2020

目的：根据某医院的医院感染控制的情况，对于所参与护理的工作人员进行防护护理工作探讨，寻找有用的控制内部感染的护理方式。方法：选用 2016—2018 年间的护理人员，根据护理工作不到位所导致的护理工作感染率强的情况选用 250 名患者进行发生率的处理，制定有效的护理管理方案，积极地保障其内部的六步洗手法的正确应用，并在后续的护理工作中贯彻落实，并且将结果与前期进行比较。结论：护理效果完好，护理行为规范化。
Integrated Heat and Electricity Dispatch for District Heating Networks with Constant Mass Flow: A Generalized Phasor Method
Authors: Chen Yuwei , Guo Qinglai , Sun Hongbin , Pan Zhaoguang
Published: June 2020

Using thermal inertia in
district heating systems (DHSs) to improve the dispatch flexibility and economy
of integrated heat and electricity systems (IHESs) is a research hotspot and
difficulty. In most existing studies, the partial differential equations (PDEs)
of thermal inertia are approximated by discrete-time models, making it
difficult to accurately describe the continuous dynamic processes. In this
paper, we propose a novel generalized phasor method (GPM) for thermal inertia
in DHSs with constant mass flow. Based on the analytical solution of the PDEs and
the Fourier transform, the intractable PDEs are transformed into a series of
complex algebraic equations represented by phasors. The GPM has higher accuracy
compared to traditional discrete models because it is essentially a continuous
model in the time domain. Then, we present a different representation of an
integrated heat and electricity dispatch (IHED) model combining a DHS model in
phasor form and a traditional electrical power system model. The IHED model is
a convex programming problem and can be easily solved. The effectiveness of the
proposed GPM and dispatch model is
verified in three test systems. Compared with traditional methods for modeling
the thermal inertia, the proposed GPM is more accurate.
A Multi-Task Pipeline with Specialized Streams for Classification and Segmentation of Infection Manifestations in COVID-19 Scans
Authors: Al-Kabbany Ahmad , El-bana Shimaa , Sharkas Maha
Published: June 2020

We are concerned with the challenge of coronavirus disease (COVID-19) detection in chest
X-ray and Computed Tomography (CT) scans, and the classification and segmentation of related
infection manifestations. Even though it is arguably not an established diagnostic tool, using machine
learning-based analysis of COVID-19 medical scans has shown the potential to provide a preliminary
digital second opinion. This can help in managing the current pandemic, and thus has been attracting
significant research attention. In this research, we propose a multi-task pipeline that takes advantage
of the growing advances in deep neural network models. In the first stage, we fine-tuned an
Inception-v3 deep model for COVID-19 recognition using multi-modal learning, i.e., using X-ray and
CT scans. In addition to outperforming other deep models on the same task in the recent literature,
with an attained accuracy of 99.4%, we also present comparative analysis for multi-modal learning
against learning from X-ray scans alone. The second and the third stages of the proposed pipeline
complement one another in dealing with different types of infection manifestations. The former
features a convolutional neural network architecture for recognizing three types of manifestations,
while the latter transfers learning from another knowledge domain, namely, pulmonary nodule
segmentation in CT scans, to produce binary masks for segmenting the regions corresponding to
these manifestations. Our proposed pipeline also features specialized streams in which multiple deep
models are trained separately to segment specific types of infection manifestations, and we show the
significant impact that this framework has on various performance metrics. We evaluate the
proposed models on widely adopted datasets, and we demonstrate an increase of approximately 4%
and 7% for dice coefficient and mean intersection-over-union (mIoU), respectively, while achieving
60% reduction in computational time, compared to the recent literature.
Using AWS Cloud resources in Operating Systems undergraduate class during the pandemic: a case study
Authors: Gradvohl André
Published: June 2020

Pandemic brought new forms of remote education into the discussion. However, facilitating students' access to good computing infrastructure is not a widespread task. This paper presents a report on the use of computing resources in the AWS cloud by students in the Operating Systems class during the pandemic, from March to July 2020. The use of these computational resources was essential to consolidate some of the concepts covered in the course and, at the same time, to complement the students' knowledge about cloud computing. The results of this survey were very positive. Students said they learned more about the resources available in the cloud, the potential of cloud computing, and how to use it. Besides, they were able to create their remote infrastructure to carry out the work proposed in the Operating System class.
Problems of quantitative estimation of excretory kidney function based on creatinin
Authors: Nagibovich O. A. , Shipilova D. A. , Shchukina N. A. , Trandina A. E.
Published: June 2020

This review presents the possibility of using serum creatinine as an endogenous indicator of the functional state of the kidneys. The results of scientific research are analyzed, which shows the information content of the use of this indicator for assessing glomerular filtration rate (GFR). The features of laboratory methods for determining serum creatinine are considered. Particular attention is paid to information about the errors and variability of measurements of standardized methods obtained in laboratories of different countries. In addition to the physiological reasons that make serum creatinine an imperfect marker for GFR, there are analytical measurement errors, which, in turn, can also distort true results. Since the relationship between serum creatinine and GFR is hyperbolic, analytical errors will affect not only the accuracy of the calculation equations based on it. The introduction of standardization of routine methods for measuring serum creatinine from a reference sample improved the assessment of GFR by reducing the bias of the results of measuring creatinine from its true value. To increase the accuracy and reliability of standardized methods, it is necessary to continue research in this direction. In real clinical practice, all the limitations and assumptions of a specific method of measuring creatinine should be taken into account in order to avoid incorrect interpretation of the results when assessing the functional ability and staging of chronic kidney disease. For prospective observation of a specific patient, the same GFR calculation formula and the same method for measuring serum creatinine should be used.
Features of the thyroid status in patients receiving programmed hemodialysis
Authors: Kovalevskiy V. A. , Shishkin A. N.
Published: June 2020

INTRODUCTION. In patients with CKD stage 5 receiving hemodialysis as the main method of renal replacement therapy (RRT), the endocrine system organs, including the thyroid gland, are affected over time. The study of changes in the thyroid status is an urgent task. AIM OF STUDY. Study of functional and gender characteristics of the thyroid status, depending on the duration of patients stay on hemodialysis. PATIENTS AND METHODS. The thyroid status was measured in 108 patients (44 women and 64 men, average age 51.7±15.4 years) undergoing hemodialysis. Patients were divided into quartiles according to the duration of stay on the RRT: group 1 4 – 25 months (28 people), group 2 41 – 59 months (26 people), group 3 68 – 97 months (26 people) and the fourth more than 100 months (28 people). We performed correlation analysis and comparison between groups on the level of free T 4, TSH, the ratio of fT4 to TSH. RESULTS. The average value of fT4 was 11.95±2.07 pmol / ml and TSH 1.5± 0.94 mcME/ml. Significant differences in thyroid status were obtained between the first and second groups in terms of TSH level and ratio fT 4 to TSH (P<0.01) – the level of TSH in the second group is higher (0.74 to 2.1 mсME/ml) and the ratio of fT4 to TSH is lower (13.09 to 4.91). In total, thyroid dysfunction was detected in 20.3% of the examined patients. CONCLUSION. Thus, deviations in the thyroid status occur after 2 years of being on RRT by hemodialysis. In patients who have been on RRT for more than 5 years, the thyroid status stabilizes. The reasons for this phenomenon are completely incomprehensible.
5/6 nephrectomy: renal tissue regeneration and condition of brain microcirculation
Authors: Sokolova I. B. , Ivanova G. T.
Published: June 2020

THE AIM. To find out if the level of regeneration of renal tissue after nephrectomy 5/6 kidney mass is sufficient to prevent pathological deterioration of microcirculation in the cerebral cortex. MATERIAL AND METHODS. The method of intravital microscopy was used to study the density of the microvascular network of the pial sheath of the cerebral cortex in Wistar rats 4 months after the removal of 5/6 of the renal tissue mass. At the same time, the level of perfusion and oxygen saturation (SO2) were measured in the cortical tissue using laser Doppler flowmetry. To assess the degree of kidney regeneration after resection, a morphological study of kidney tissue was carried out when staining with hematoxylin-eosin and Masson. RESULTS. It was shown that 4 months after nephrectomy in the pial membrane, the density of the microvascular network decreased by an average of 1.3 times compared with falsely operated animals, and the number of arterial vessels by 1.5 times. The level of tissue perfusion (on average by 20%) and SO2 (on average from 95 to 91%) decreased statistically significantly. On morphological preparations, there were no signs of true regeneration; revealed glomerular hypertrophy, the development of fibrosis, deformation of blood vessels, and tubular structures. CONCLUSION. Renal regeneration 4 months after nephrectomy 5/6 kidney mass is insufficient to normalize its function, and therefore does not prevent the cerebrovascular accident. Significant microcirculation disorders are observed in rat cerebral cortex: a decrease in the density of the microvascular network, a decrease in the rate of cerebral blood flow and tissue oxygen saturation, which are signs of the formation of lacunar strokes.
Os juristas nas Teorias do mais-valor de Karl Marx
Authors: Sartori Vitor
Published: June 2020

Resumo: pretendemos mostrar, a partir daquilo que José Chasin chamou de análise imanente, o modo pelo qual Karl Marx, em seu Teorias do mais-valor, analisou o trabalho produtivo ao ter em conta o desenvolvimento da burguesia e o surgimento de camadas intermediárias entre o proletariado, a burguesia e o processo imediato de produção. Em um primeiro momento, com Smith e a crítica diante da sociabilidade feudal, haveria um elogio do trabalho produtivo e uma crítica à improdutividade do trabalho de comerciantes, juristas, funcionários públicos, entre outros. Depois, porém, a classe burguesa teria adotado a mesma postura que criticara na nobreza. E, assim, desenvolve-se uma concepção apologética no que toca o sentido da categoria trabalho produtivo. Os juristas, antes vistos com desconfiança, vêm a ser vistos de modo acrítico em um processo em que, ao mesmo tempo, tem-se um capitalismo senil e possibilidades abertas à superação deste.
A crítica da cultura e a educação estética
Authors: Reis Ronaldo Rosas , Rocha Elisabeth Soares
Published: June 2020

A crítica da cultura como reflexo do mundo que realmente existe é o ponto de partida para a apreensão do caráter social dos sentidos estéticos, manifestamente sobre a criação artística, o conhecimento estético e a produção material sob o capitalismo. Partindo de tal pressuposto, o presente artigo se debruçará sobre a problemática geral da estética e do seu papel formador na cultura.
Arte Autônoma ou Arte Política?
Authors: Bianchi Bruno Daniel
Published: June 2020

O presente artigo tem por objetivo compreender a discussão entre a alternativa entre uma arte autônoma e uma arte política/de tendência. A partir do referencial teórico do marxista húngaro György Lukács, o texto busca criticar o caráter enrijecido do debate devido à limitação da concepção de sujeito e sociedade inerente à ideologia burguesa, assim como sua tentativa de produzir uma filosofia da arte desvinculada das questões histórico-sociais de seu tempo.
György Lukács, Introdução à Estética de Hegel
Authors: Fortes Ronaldo Vielmi
Published: June 2020

A estética de Hegel significa, no campo da filosofia da arte, o ápice do pensamento burguês, das tradições burguesas progressistas. Os conhecidos aspectos positivos do pensamento hegeliano e seu modo de escrever se manifestam com mais clareza neste trabalho; a universalidade de seu conhecimento, seu profundo e fino senso pelas peculiaridades e contradições do desenvolvimento histórico, a conexão dialética dos problemas históricos com as questões teóricas e sistemáticas das legalidades objetivas universais: todos esses traços positivos da filosofia hegegeliana aparecem mais claros em sua estética. Os clássicos do marxismo mantinham particularmente grande apreço por esse trabalho.
FATORES ASSOCIADOS A INICIAÇÃO SEXUAL PRECOCE DE ADOLESCENTES EM SANTARÉM, PARÁ
Authors: Spinola Mara Cristiany Rodrigues
Published: June 2020

A iniciação sexual é diretamente influenciada por fatores biológicos, socioculturais e psicológicos, sendo uma parte integrante da personalidade do ser humano. O objetivo foi identificar os fatores que levaram as adolescentes, atendidas no Centro de Referência de Saúde da Mulher de Santarém, a iniciarem a vida sexual precocemente. Caracteriza-se como uma pesquisa de campo descritiva, transversal com abordagem quantitativa. A amostra foi representada pelo sexo feminino, sendo composta por 41adolescentes. Para a coleta de dados foi utilizado um questionário fechado. Os dados foram analisados mediante estatística descritiva. O estudo evidenciou que entre as adolescentes entrevistadas, 95% apresentaram ensino médio incompleto, 66% dependem financeiramente dos pais/responsáveis, 93% possuem religião, 59% tiveram relações sexuais entre 12 e 15 anos de idade, 49% foram pressionadas/estimuladas pelo parceiro, 100%referiram ter conhecimentos sobre IST’S e métodos contraceptivos, porém 54% não fizeram uso de nenhum método na primeira relação. Diante dos resultados obtidos é importante destacar a importância da família e dos profissionais de saúde na orientação adequada à adolescentes à respeito da sexualidade e saúde sexual, no intuito de reduzir os riscos de uma gravidez não planejada e infecções sexualmente transmissíveis, a fim de tornar o momento da relação sexual menos arriscada possível.
TENDÊNCIAS DE MORTALIDADE POR DOENÇAS RESPIRATÓRIAS E DOENÇAS CARDIOVASCULARES EM TERESINA-PI
Authors: Da Silva Gleison Vitor Ferreira de Castro , Nogueira Luciana Tolstenko , Araujo Izael Francisco de Brito , De Souza Daiane Ribeiro , De Sousa Geovanna Arnaldo , Da Silva Allan Dellon
Published: June 2020

Este estudo teve por objetivo analisar as tendências de mortalidade por doenças respiratórias e cardiovasculares e comparar o comportamento dessas tendências entre si no período entre 2009 a 2016, em Teresina, Piauí. Trata-se de um estudo descritivo, de análise quantitativa, realizado na capital do Piauí. A pesquisa teve como base fundamental os dados do Sistema de Informação sobre Mortalidade (SIM) e do Núcleo de Informação em Serviços de Saúde (NUINSA).  O aumento proporcional das mortes por Doenças do Aparelho Circulatório (DAC) foi um pouco maior que o das mortes por Doenças Respiratórias (DR) (40,6% versus 38,6%), com destaque no grupo de Doenças do Aparelho Circulatório para as doenças isquêmicas do coração e doenças cerebrovasculares e no grupo de Doenças Respiratórias para influenza e pneumonia.  O incremento nos óbitos por doenças do aparelho circulatório e doenças respiratórias entre 2009 e 2016, discretamente maior entre as primeiras, aponta para a necessidade de comprometimento local com o plano de ações nacional para enfrentamento das Doenças Crônicas Não Transmissíveis e também para a fragilidade nos processos de saúde que visam a prevenção e cuidado
Extremal Topological and Geometric Problems for Polyominoes
Authors: Malen Greg , Roldan-Roa Erika Berenice
Published: June 2020

We give a complete solution to the extremal topological combinatorial problem of finding the minimum number of tiles needed to construct a polyomino with $h$ holes. We denote this number by $g(h)$ and we analyze structural properties of polyominoes with $h$ holes and $g(h)$ tiles, characterizing their efficiency by a topological isoperimetric inequality that relates minimum perimeter, the area of the holes, and the structure of the dual graph of a polyomino. For $h\leqslant 8$ the values of $g(h)$ were originally computed by Tomas Olivera e Silva in 2015, and for the sequence $h_l=(2^{2l}-1)/3$ by Kahle and Róldan-Roa in 2019, who also showed that asymptotically $g(h) \approx 2h$. Here we also prove that the sequence of polyominoes constructed by Kahle and Róldan-Roa that have $h_l=(2^{2l}-1)/3$ holes and $g(h_l)$ tiles, are in fact unique up to isometry with respect to attaining these extremal topological properties; that is, having the minimal number of tiles for $h_l$ holes.
Polyurethane Toggles
Authors: Defant Colin
Published: June 2020

We consider the involutions known as toggles, which have been used to give simplified proofs of the fundamental properties of the promotion and evacuation maps. We transfer these involutions so that they generate a group $\mathscr P_n$ that acts on the set $S_n$ of permutations of $\{1,\ldots,n\}$. After characterizing its orbits in terms of permutation skeletons, we apply the action in order to understand West's stack-sorting map. We obtain a very simple proof of a result that clarifies and extensively generalizes a theorem of Bouvel and Guibert and also generalizes a theorem of Bousquet-M\'elou. We also settle a conjecture of Bouvel and Guibert. We prove a result related to the recently-introduced notion of postorder Wilf equivalence. Finally, we investigate an interesting connection among the action of $\mathscr P_n$ on $S_n$, the group structure of $S_n$, and the stack-sorting map.
Geometric Realization of $\gamma$-Vectors of Subdivided Cross Polytopes
Authors: Aisbett Natalie , Volodin Vadim
Published: June 2020

For any flag simplicial complex $\Theta$ obtained by stellar subdividing the boundary of the cross polytope in edges, we define a flag simplicial complex $\Delta(\Theta)$ whose $f$-vector is the $\gamma$-vector of $\Theta$. This proves that the $\gamma$-vector of any such simplicial complex is the face vector of a flag simplicial complex, partially solving a conjecture by Nevo and Petersen. As a corollary we obtain that such simplicial complexes satisfy the Frankl-Füredi-Kalai inequalities.
Introducing the Skills of Self-assessment and Peer Feedback
Authors: Jabr Rania K.
Published: June 2020

The object of our teaching should not simply be to introduce our students to a foreign language, but it should be to enable them to perform well when we teachers are no longer there to support them. This means we need to teach them to be autonomous, and one way to succeed in this challenging task is to train them in the “skill” of self-assessment (Harris, 1997) and how to benefit from peer interaction.

Teachers, whether teaching beginners or advanced level students, may share some of the following common concerns about their students. Do any of the following seem familiar? The students do not listen or follow instructions. They are totally dependent and want to be spoon-fed. They are fixated on grades and want their work graded immediately. They complain when they are instructed to do tasks and even resort to using L1. Worst of all, they can be rather lazy and copy each other’s work in the hope of getting a better grade.
Challenges to the Fostering and Adoption of Muslim Children in The British Care System
Authors: Al Jawdah Catherine
Published: June 2020

The number of Muslim foster children coming into care in the UK is increasing; however, the number of Muslim foster carers is not. Should care workers attempt to place Muslim children in Muslim homes? Or – as some have suggested – could this be deleterious to them, or be simply irrelevant? While many Muslim children are in foster care in the UK, there is often insufficient cultural training among workers, and some unfortunate situations have resulted in the suffering or even suicide of Muslim children in care. At the same time, it is not always apparent why there is a lack of Muslim foster carers – is it a religious concern, or due to some other reason? In response to these pressing concerns, this article examines the legal and practical implications of fostering and adoption law and policy in Britain. It includes an examination of the barriers preventing Muslim carers from coming into fostering and adoption, as well as the sensitive issue of caring for maḥram and non-maḥram children. It also reviews Islamic principles of adoption to determine how religious concerns intersect with the concerns of the state. Ultimately it aims to determine if British law, policies, or social work practices should be revised.