bluuebunny/crossref_metadata_2025 huggingface dataset:
The effect of external voltage stimulation on absence seizures
Authors: Hu Bing , Wang Dingjiang , Shi Qianqian
Published: April 2020

BACKGROUND:

Absence epilepsy (AE) is a systemic disease of the brain, which mainly occurs during childhood and adolescence. The control mechanism is still unclear, and few theoretical studies have been conducted to investigate this.

OBJECTIVE:

In this paper, we employed external direct voltage stimulation in the subthalamic nucleus to explore mechanisms that inhibit absence seizures.

METHODS:

All simulation results are obtained by the four-order Runge-Kutta method in the MATLAB environment. The inhibition mechanism can be inferred from the results.

RESULTS:

We found that the seizures may be inhibited by tuning the strength of the voltage to suitable ranges. This regulation may be achieved through the competition between the inhibitory projections from the basal ganglia to the thalamus.

CONCLUSION:

Because the mechanism underlying the treatment of epilepsy with a uniform direct current electric field is unclear, we hope that these results can inspire further experimental studies.
Analysis of behavioral disability and construction of a disability scale for the elderly in Shanghai
Authors: Shao Zeguo , Xiang Yuhong , Yan Mina , Chen Wei
Published: April 2020

BACKGROUND:

With the gradual aging of China’s population development, the number of disabled elderly has increased significantly.

OBJECTIVE:

In order to better solve the problem of life care for these elderly people, it is necessary to conduct in-depth and detailed research on the specific conditions of disabled elderly people, in order to differentiate different conditions for care and set appropriate insurance provisions.

METHODS:

Based on the detailed analysis of the basic behavioral ability of the elderly, and referring to the International Disability standards, this paper refines the three basic living ability indicators of physiological behavior, cognitive behavior and interpersonal behavior, and integrates the cultural elements of assimilation, continuity, fusion and cohesion with Chinese characteristics. A more systematic and perfect five-level disability scale which conforms to the national conditions of China is designed.

RESULTS:

The disability of the elderly in Shanghai was investigated with the newly constructed scale, and a detailed analysis and five-level division were made.

CONCLUSION:

Experiments show that the results of this study can more effectively establish the disability level of the elderly in China.
Comparison of quantitative measurements of four manufacturer’s metal artifact reduction techniques for CT imaging with a self-made acrylic phantom
Authors: Chou Ryan , Chi Hung-Yi , Lin Yi-Hung , Ying Liu-Kuo , Chao Yu-Ju , Lin Cheng-Hsun
Published: April 2020

BACKGROUND:

Metal artifact reduction (MAR) techniques can improve metal artifacts of computed tomography (CT) images.

OBJECTIVE:

This work focused on conducting a quantitative analysis to compare the effectiveness of four commercial MAR techniques on three types of metal implants (hip implant, spinal implant, and dental filling) with a self-made acrylic phantom.

METHODS:

A cylindrical phantom was made from acrylic with a groove in the middle, and then three types of metal implants were placed in the groove. The phantom was scanned by four CT scanners and four commercialized MAR techniques were used to analyze the images. The techniques used were single-energy metal artifact reduction (SEMAR, Canon), smart metal artifact reduction software (Smart-MAR, GE), iterative metal artifact reduction (IMAR, Siemens), and metal artifact reduction for orthopedic implants (OMAR, Philips). Quantitative analysis methods included objective and subjective analysis.

RESULTS:

The expected value of SEMAR, Smart-MAR, IMAR, and OMAR were 36.6, 37.8, 5.0, and 2.3, respectively. SEMAR and Smart-MAR achieved optimal results.

CONCLUSION:

This study successfully evaluated the effects of four commercial MAR techniques on three types of metal implants in a phantom. All MAR techniques effectively reduced metal artifacts, but the effect was not significant with dental fillings due to high-density material.
Study on an efficient hyper-chaos-based image encryption scheme using global bit permutation
Authors: Zhang Jianfeng , Lu Zhiying , Li Min
Published: April 2020

BACKGROUND:

The chaotic system with low dimensions has a low security compared to the high-dimensional chaotic system. Furthermore, major pixel-level permutations merely transform the pixel position and cannot change the intensity distribution of the original image. Bit-level permutation could change the intensity distribution, as it devotes more time to conduct bit-level computation.

OBJECTIVE:

In this study, we present a more efficient image encryption approach based on hyper-chaos and a global bit cycle shift (HC-GBCS).

METHODS:

According to the input image we adopted the SHA-256 secure hash algorithm to obtain the initial key, which served as the premier parameter of the chaotic system. Then we employed a 4D hyper-chaotic system for generating the chaotic series, on which we utilized global bit permutation to enhance the security of the encryption system. Finally, the diffusion process was conducted by using the generated chaotic series extended with a logistic map.

RESULTS:

Experimental results and analysis reveal that the presented approach encrypts plain images effectively and achieves high security and stability.

CONCLUSION:

The proposed method can deal with the problems inherently existing in encryption methods utilizing low-dimensional chaotic map. Furthermore, global bit permutation can transform the pixel distribution of plain images and enhance the cryptosystem security.
Development of an fMRI-compatible driving simulator with simultaneous measurement of physiological and kinematic signals: The multi-biosignal measurement system for driving (MMSD)
Authors: Kim Hyung-Sik , Mun Kyung-Ryoul , Choi Mi-Hyun , Chung Soon-Cheol
Published: April 2020

BACKGROUND:

A system that comprehensively analyzes a complex perceptual-motor behavior such as driving, by measuring changes in the central and autonomic nervous systems integrated with measurement of changes in vehicle operation, is lacking.

OBJECTIVE:

We aimed to develop a functional magnetic resonance imaging (fMRI)-compatible driving simulator to enable simultaneous measurement of physiological, kinematic, and brain activations.

METHODS:

The system mainly comprises a driving simulator and physiological/kinematic measurement. The driving simulator comprises a steering wheel, an accelerator, a brake pedal, and a virtual-reality optical system. The physiological system comprises a skin-conductance-level and a photoplethysmographic meter. The kinematic system comprises a 3-axis accelerometer and a 2-axis gyroscope attached to the accelerator foot. To evaluate the influence of the MR system on the MMSD, physiological and kinematic signals were measured.

RESULTS:

The system did not blur or deform the MR image. Moreover, the main magnetic field, the gradient magnetic field, and the RF pulse of the MR system did not introduce noise into the physiological or kinematic signals.

CONCLUSION:

This system can enable a comprehensive evaluation of cognitively complex behaviors such as driving, by quantitatively measuring and analyzing concurrent brain activity, autonomic nervous system activity, and human movement during simulated driving.
Differences in reproducibility of gait variability and fractal dynamics according to walking duration
Authors: Choi Jin-Seung , Seo Jeong-Woo , Lee Jin-Soo , Kim Jung-Gil , Cho Jun-Hyeong , Tack Gye-Rae
Published: April 2020

BACKGROUND:

Gait variability and fractal dynamics may be affected by the walking duration.

OBJECTIVE:

The purpose of this study is to examine the reproducibility of stride time while walking on a self-paced treadmill.

METHODS:

Fifteen young and healthy subjects walked on the treadmill for 10 minutes. Three to eight minutes duration of the data were used to compare the trial-to-trial and day-to-day reproducibility of the average, variability, and fractal dynamics of stride time.

RESULTS:

The results show that all variables had high trial-to-trial reproducibility. In the day-to-day results, the average walking speed and mean stride time showed reproducibility without regard for duration, but the variability and gait fractal dynamics showed differences in reproducibility according to duration. The variability and fractal dynamics showed better reproducibility in less than 5 minutes and over time, respectively. However, both variables generally showed improved reproducibility when average data from two to three rounds were used.

CONCLUSION:

Based on the results of this study, it is proposed that variability should be examined using data of 5 min or less, and fractal dynamics should be examined using 5 min or more of repeated data when performing walking tests from a gait dynamics perspective.
Characteristics of physiological data during asymmetric gait of healthy subjects using a two-belt treadmill
Authors: Song Seong-Mi , Heo Min , Oh Seung-Yong , Kim Kyong , Kwon Tae-Kyu
Published: April 2020

BACKGROUND:

Mobile rehabilitation systems for patients with gait disorder are being developed. Safety functions to prevent patients from falling are considered during product development; however, few studies have been conducted on systems that have been prevalidated for healthy adults prior to application to patients.

OBJECTIVE:

This study analyzed the characteristics of lower extremity muscles and foot pressure in healthy adults during unbalanced walking with differences in the speed of left and right speed using a two-belt treadmill.

METHODS:

Twenty subjects performed gait motions with a difference in the weight support conditions (0% and 30%) and the left and right lower limb speeds (1–3 km/h). Each subject’s muscular activities and foot pressure signals were collected. The gait patterns of the faster side exhibit similar characteristics to the paralyzed leg, and the slower side is similar to the non-paralyzed leg.

RESULTS:

Weight-supporting healthy subjects showed asymmetric gait patterns, similar to hemiplegic patients, because of the difference in the speed of the left and right side.

CONCLUSIONS:

The quantitative results can be used to develop a training protocol for two-belt treadmills with differently controlled left and right speeds for gait rehabilitation in hemiplegic patients.
A preliminary in vivo study of a method for measuring magneto-acoustic sonic source under electrical stimulation
Authors: Zhang Shunqi , Ma Ren , Zhou Xiaoqing , Yin Tao , Liu Zhipeng
Published: April 2020

BACKGROUND:

Stimulating current distribution in the tissue is unknown due to the complex distribution.

OBJECTIVE:

A preliminary in vivo measurement of the magneto-acoustic (MA) signal of the human finger is performed in this study. The approach for locating the magneto-acoustic source of the stimulating current is studied.

METHODS:

We use a lock-in amplifier to measure the MA signal under continuous wave electrical stimulation. The phase of the MA signal is used to extract the location of the sonic source. The experimental system is designed to measure the MA signal under electrical stimulation.

RESULTS:

Preliminary experiments results show that the amplitude precision is improved to less than 1 [Formula: see text]Pa. The sonic source is located with millimetre precision.

CONCLUSIONS:

We propose a new MA source-locating method with high measurement and location precision. This method will be significant to the study of the imaging and monitoring of the current distribution of electrical stimulation with high precision.
Study on injection molding analysis of glasses-type wearable device for facial skin care
Authors: Shin Mi Yeon , Chong Woo Suk , Kim Kyong , Yu Chang Ho
Published: April 2020

BACKGROUND:

With the improvement in the standard of living, there has been increasing interest in facial skin care. In particular, it has been observed that people pay extra attention to eye-skin when they visit skin care parlors for special treatment and care.

OBJECTIVE:

There is a need for skin care devices that would enable convenient skin care anywhere, including at home and on the move. In this research, we developed a prototype of a glasses-type skin care device with a LED (Light-Emitting Diode) irradiation function and performed injection molding analysis of the skin care device model for mass production.

METHODS:

First, the product was designed using a universal design to improve the wearability of the glasses-type skin care device. The first prototype of the skin care device was produced using an integrated LED optical module capable of irradiating at three LED wavelengths to investigate the structural function of the product. The prototype was classified into three mechanisms and injection molding analysis was performed. The fill time, temperature at flow front, injection pressure, clamp force, and deflection values were analyzed according to the appropriate number and location of gates into which the PC [Formula: see text] PBT (Polycarbonate [Formula: see text] Polybutylene terephthalate) resin was introduced.

RESULTS:

We found that all the other parts except the temple section of the device were inferior in moldability.

CONCLUSION:

In further studies, the 3D prototype will be modified to enhance moldability, and injection molding analysis with other materials as well as with PC [Formula: see text] PBT resin will be performed.
Quantitative measures of postural tremor at the upper limb joints in patients with essential tremor
Authors: Kwon Do-Young , Kwon Yu-Ri , Choi Yoon-Hyeok , Eom Gwang-Moon , Ko Junghyuk , Kim Ji-Won
Published: April 2020

BACKGROUND:

It is important to quantitatively assess tremor for accurate diagnosis and evaluation of the response to interventions in patients with essential tremor (ET).

OBJECTIVE:

The purpose of this study was to investigate the relationship between quantitative measures of postural tremor and clinical rating scale in patients with ET.

METHODS:

18 ET patients performed a postural tremor task that required them to hold their arms outstretched parallel to the floor while wearing a gyro sensor based measurement system. The time domain variables were derived from the sensor signals. Additionally, the frequency domain variables were derived from the power spectrum of the angular velocity signal. Spearman correlation analysis was employed in the relationship between the variables and clinical score.

RESULTS:

The RMS angular velocity of roll and yaw directions at the hand joint were strongly correlated with the clinical rating scale ([Formula: see text] 0.7, [Formula: see text] 0.01). Similarly, the peak power of roll and yaw directions at the hand joint were moderately correlated with the clinical rating scale ([Formula: see text] 0.61 and [Formula: see text] 0.67, [Formula: see text] 0.01). In contrast, no significant correlation coefficients were observed in the peak frequency ([Formula: see text] 0.05).

CONCLUSION:

These results indicate that hand tremor of roll and yaw directions are more associated with assessment of severity of ET compared to other joints. This study suggests that quantitative measurements of postural tremor should be considered as tremor directionality as well as attachment location.
Creative Teachers in Teaching Speaking Performance
Authors: Setiawan Anton , Munir Ahmad , Suhartono Suhartono
Published: April 2020

Creativity has an important role in teaching process. However, the students’ achievement are not realeased by the role of creative teachers. This study aims at exploring some factors that used by creative teachers in teaching speaking performance. As media and strategies are the crucial factors that used by the teachers to help the students understand the material easily. The qualitative study was applied in this research. The technique of collecting the data was an interview, and questionnaire from the English teachers in five schools in Surabaya. This study found that there were some factors that influenced the creative teachers in teaching speaking performance such as (1) media usage: powerpoint presentation, chunks of familiar pictures, attention-grabbing pictures, music ball, and eye-catching cup as well as some online exercise links; (2) strategies election: by performing ball and cup moving, “boom” counting, guessing game, chained word game and listening comprehension taken from Google translate recording; (3) lesson plan; (4) organize the material. In conclusion, the creative teachers applied some factors in teaching speaking performance to enhancing students speaking performance.
La herencia de Monseñor Romero
Authors: Sorges, S.I. Bartolomeo
Published: April 2020

Para recordar a Óscar Romero, el P. Sorge rememora su perﬁl eclesial, y su evolución personal provocada por la cercanía del pueblo sufriente salvadoreño, más allá de los epítetos simpliﬁcadores de “conservador” o “progresista”. Su llamada “conversión” no fue más que una respuesta coherente a los llamamientos del Concilio Vaticano II. Es precisamente en ese contexto como hay que interpretar su herencia pastoral marcada por una concepción equilibrada de las aportaciones positivas de la teología de la liberación.
La declaración de París-2005:
Authors: Larrú Ramos José María
Published: April 2020

El artículo analiza los principios de eﬁcacia de la ayuda al desarrollo que han sido renovados en el Foro de Alto Nivel de París en marzo de 2005. Los cinco principios son comentados y analizados de forma crítica resaltando los principales problemas que deben afrontar los países donantes y socios, tanto en su dimensión agregada o macro de estrategias nacionales de lucha contra la pobreza, como en su dimensión micro o de proyectos. En la dimensión micro se describen algunos de los principales retos que la Declaración de París supone para el trabajo de las ONGD, tal como lo han venido desempeñando hasta la ahora. La óptica del análisis se centra en los trabajos de evaluación y cómo éstos pueden rediseñarse para afrontar los retos futuros.
El desarrollo socioeconómico de América Latina y el Caribe bajo el modelo multiexportador
Authors: Hidalgo Capitán Antonio Luis
Published: April 2020

Este artículo parte de una distinción entre los conceptos de “modelo histórico-estructural” (vigente largo tiempo) y “modelo de desarrollo” (por el que se transita de un modelo histórico estructual a otro). El autor aporta en primer lugar una síntesis histórica acerca del funcionamiento de los sistemas socioeconómicos latinoamericanos. En un cuadro analítico muy ilustrativo se presenta precisamente la caracterización de dichos modelos. A continuación se analizan las características actuales de dichos sistemas, deteniéndose en una explicación de los rasgos principales del denominado modelo multiexportador, vigente en la actualidad en la región. Siguen unas breves y sugerentes reﬂexiones acerca de las sendas que debería seguir el desarrollo en AL y el Caribe y del papel de la cooperacion internacional al respecto.
Del alivio de la deuda externa a la reducción de la pobreza:
Authors: Romero Rodríguez José Juan
Published: April 2020

Durante una reciente estancia en Honduras, hemos tenido ocasión de participar en una de las 17 Jornadas regionales Informativas de Actualización de la Estrategia para la reducción de la pobreza (ERP) de Honduras. Dicha reunión tuvo lugar el 6 de agosto de 2005 en Santa Rosa de Copán, capital del departamento de dicho nombre y cabecera de la región occidental de Honduras.
Implementación de Club de Madres en Unidades de Salud de la Familia Carapeguá. IX Región Sanitaria Paraguarí. 2016- 2018
Authors: Maidana de Zarza Aida , Goiriz Nelli , Troche Gabriela , Insfrán Judith , Martínez Deima
Published: April 2020

Los programas de educación sanitaria durante la etapa prenatal, son considerados como actividades básicas de prevención y promoción de la salud. Objetivo: Evaluar la implementación de club de madres en las USF IX Región Sanitaria de Paraguarí. Diseño, Observacional, descriptivo, de corte transversal, cuantitativo. Se aplicó un muestreo probabilístico por conglomerado seleccionándose 4 USF, y no probabilístico por conveniencia para la elección de mujeres en edad fértil, muestra conformada por 125. En cuanto a conocimiento de Psicoprofilaxis Obstétrica (PPO) conocen la utilidad de la preparación física-emocional y beneficios al recién nacido; la técnica de relajación favorece aspectos físico-mental, el ejercicio de la gimnasia prepara la musculatura del cuerpo. Conocen signos de alarma, lactancia materna exclusiva e higiene del cordón umbilical con alcohol. Referente a práctica más de la mitad inició control prenatal y club de madres en el primer trimestre del embarazo. Poca participación de la pareja o familiar en las sesiones. En cuanto a la periodicidad el club de madres, es irregular. Conclusión: la implementación de club de madres en Unidades de Salud de la familia (USF) de Carapeguá. IX Región Sanitaria Paraguarí. 2016- 2018, es deficiente.
Determinación de indicadores y fuentes de verificación necesarios para la Infraestructura Física de Proyectos Educativos de Educación Superior en Paraguay
Authors: Rolón Flecha Lilian Graciela , Jiménez Chaves Viviana Elizabeth
Published: April 2020

La infraestructura física es un aspecto fundamental para toda institución educativa de nivel superior, en ella se concretan los procesos de enseñanza-aprendizaje. Por ello, las condiciones físicas de dichos espacios educativos son sustanciales para el aprendizaje. Para la habilitación de la infraestructura física educativa en los países, no basta con el proyecto ejecutivo de arquitectura, sino que depende del cumplimiento de requisitos establecidos por instituciones reguladoras de cada país. En Paraguay el encargado de habilitar proyectos educativos de Educación Superior es el Consejo Nacional de Educación Superior (CONES). Para lo cual, cuenta con una Guía de Elaboración de Proyectos Educativos que establece requisitos que deben ser cumplidos en cuatro aspectos, siendo el de infraestructura física uno de ellos. El Aspecto Físico de la guía es bastante extenso y a la vez confuso por la forma en que describe y estructura su contenido. Esta dificultad identificada impide reconocer requisitos imprescindibles para el diseño correcto de toda infraestructura física educativa. Con miras a resolver este problema, el propósito de esta investigación fue determinar los indicadores y las fuentes de verificación necesarios para la Infraestructura Física de Proyectos Educativos de Educación Superior en Paraguay.  De esta manera, se estudiaron varias regulaciones similares de países de América Latina, de los cuales, las de Perú, México y de ARCU-SUR se consideraron como más completas, sencillas y explícitas y fueron utilizadas para contrastar con la  norma paraguaya.  Esta  tarea  concluyó  con  el desarrollo de una tabla donde se especifican siete componentes indispensables para todos los Proyectos Educativos, un componente adicional para los relacionados con la Salud y otro componente para los Proyectos Educativos con ampliación. Finalmente, se logró determinar veinticinco indicadores con cincuenta y cinco fuentes de verificación. Se pretende que estos elementos ayuden a las Instituciones de Educación Superior y a los profesionales arquitectos a desarrollar un correcto aspecto de Infraestructura Física de Proyectos Educativos de Educación Superior. Asimismo, que facilite al ente regulador a realizar evaluaciones objetivas y precisas de dichos proyectos.
Pengaruh Sudut Kemiringan Ruang Masak dan Penggunaan Lensa Fresnel terhadap Performa Kompor Surya Tipe Kotak
Authors: Rachmanita Risse Entikaria
Published: April 2020

Performance test on box solar cooker with variations in the inclination angle of the cook room and variations of the cook room cover have been carried out. The variations angle of the cook room are 10°, 20° and 30° while the cook room cover uses 2 variations namely glass and a combination of fresnel glass. The size of the solar cooker is 60 x 60 x 40 cm with a thickness of 0.9 cm. The test was conducted in the car park behind the Engineering Building Politeknik Negeri Jember at 10:00 to 14:00 with recording every 10 minutes. The highest average solar cooker efficiency was found in solar cooker 4 with a cooking room tilt angle of 30° and using a fresnel glass combination cook room cover, the efficiency is 6.7% on the first day of testing. The highest average cooking power was also found in solar cooker 4 of 24.7 W on the second day of testing. The highest water suhue was found in solar cooker 4 at 90°C on the third day of testing.
STAR 3G 7S
Authors: Askafi Eka , Sukamtono Ali
Published: April 2020

An activity to be able to produce maximum results requires an established framework of thinking that is often called a paradigm. The last quarter century of the development of science and technology is very fast and difficult to estimate. The impact of the development of science and technology reaches various fields including economics. In this case the Islamic world in general is left behind by the West. This lag is partly due to the absence of a sophisticated and reliable paradigm of mindset. For this reason, a new paradigm needs to be built that is intact and easily understood, especially in managing the Islamic economy. First, there are four systemic words in management, namely (smart-S), say (talk-T), action (A-action), and outcome (R-result); abbreviated to STAR. Second, the expected outcome must be based on the three words that are the aim of the activity, in particular the Islamic Economy, namely the Gold of wealth, the Gospel (success) which means the throne, and the God (God) which is heaven; shortened to 3G. To get all three is required 7 (seven) Steps as taught by Allah in the Quran or Al-Fatihah which consists of repeated verses (QS, 15:87). God willing with the discovery of this new paradigm of the STAR 3G 7S will facilitate the understanding of Muslims in their identity, and will soon come out of shock and pursuit of loss.
STUDY ON LITHIUM MANGANESE OXIDE SPINEL SYSTEM AS CATHODE MATERIALS FOR LITHIUM ION BATTERY: SYNTHESIS, MORPHOLOGICAL AND ELECTROCHEMICAL CHARACTERISTICS
Authors: Lam Binh Thi Xuan , Le Phung My Loan , Nguyen Thoa Thi Phuong
Published: April 2020

Lithium manganese oxide (LiMn2O4) spinel compounds were synthesized by melting impregnation method using manganese dioxide (MnO2) and lithium nitrate (LiNO3). Four sources of MnO2 raw materials were used: a commercial electrochemical manganese dioxide (EMD) supplied by Pin Con O factory; EMD thermal pretreated (EMDt); and MnO2 synthesized chemically (CMD) by oxidation of MnSO4 solution with K2S2O, and EMD synthesized in our laboratory. The effect of the MnO2 materials on the microstructure and electrochemical properties of LiMn2O4 is investigated by X-ray diffraction, scanning electron microscopy, and electrochemical measurements. The charge-discharge cycling behavior in Swagelok model of lithium-ion cells, using synthesized LiMn2O4 as cathode, lithium metal as anode and LiPF6 as electrolyte with Whatman glass separator, showed that the spinels from thermal treated EMDt and CMD gave higher (3100 mAh/g) and more stable values of specific capacity than the spinels from non-treated EMD.
A DATA HIDING METHOD BASED ON QIM AND CONTOURLET TRANSFORM
Authors: Duong Duc Minh , Duong Duc Anh
Published: April 2020

This paper proposes a scheme that combines QIM and contourlet in image watermarking. Contourlet is a new transform that able to capture the directional edges and contours superior, but it also requires host image when extracting watermark. Through two embedding stages, our algorithm allows blind extraction, highly robust for different attacks on the watermarked image.
金属矿山无人驾驶电机车系统升级改造
Authors: 田 甜
Published: April 2020

金属矿山生产涉及众多环节,尤其在作业过程中存在很多安全隐患,若处理不当就会威胁人员生命财产安全。井下作业包括采矿、运输、通风、排水等各系统综合管理,地面上建立相应运输管理和企业流程管理系统,对提升企业生产效率有积极作用。但当前很多矿井机车运输管理效率不高,仍以人工管理模式为主,造成了不同程度的资源损耗。本文就金属矿山无人驾驶电机车系统升级改造进行探究,把握系统特点和功能进一步优化来提升运行效果。
甬台温输气管道河流穿越的勘察难点及对策
Authors: 李 志华
Published: April 2020

大型河流穿越往往是天然气长输管道的控制性工程,制约着项目建设总工期。甬台温输气管道中大型河流穿越多,形式多样,本文总结了勘察中的难点及应对措施,对其他长输管道勘察工作具有借鉴意义。
激发极化法在高原厚覆盖区的应用研究
Authors: 谢 丹 , 陈 永凌
Published: April 2020

激发极化法是寻找金属矿产的最有效的方法之一,本文以理塘县高原厚覆盖区为例,对研究区开展激电扫面以及测深工作,通过对实测数据的分析、反演处理,划分有利的成矿靶区、矿体的产状,为下一步工程提供依据。
浅谈航测法地籍测绘技术在第三次国土调查中的应用
Authors: 杨 菁 , 刘 丛洲
Published: April 2020

国土调查是一项基础的全国性的社会调查工作。现阶段,伴随着社会经济的发展,我国各领域对土地资源和自然资源的开发需求越来越多。面临着有限的土地资源和自然资源,开展第三次国土调查,有助于相关部门掌握切实的可靠的土地资源和自然资源数据。当下,我国正处于生态文明社会建设的重要阶段,城市化进程的不断推进,社会各领域的全面改革,产业升级等都意味着我国当下正处于社会变革的重要阶段。因此,新时期,第三次国土调查,有助于我国后续国土政策的优化与调整。航测法地籍测绘技术,在第三次国土调查中的应用较为广泛,其具有非常重要的应用价值,如能够大大提升国土调查数据的精确性,能够确保国土调查结果的可靠性。因此,本文针对航测法地籍测绘技术在第三次国土调查中的实际应用进行调查和分析。
428XL地震仪常规与数字检波器在山区中的应用对比
Authors: 丁 浩
Published: April 2020

勘探区位于灵台县城东南直距约19km处,属甘肃省灵台县邵寨镇管辖。勘探区最低高程约为990m,最大高程约为1320m,高差近330m。由于本区高程变化较大,且低速层速度横向变化较大。本区在实验阶段采用数字链与常规两种进行对比实验,根据实验结果决定正常施工所采用的设备。瞬变电磁法在勘探采空区中有较好的效果
分析地理信息系统中GPS控制测绘技术的应用
Authors: 鹿 庆龙
Published: April 2020

随着科学技术水平的不断提升,我国地理信息系统越来越完善,其中GPS控制技术起到决定性作用。相对比传统的测绘技术,GPS控制测绘技术具有诸多的优势,不仅可以提升测绘效率,而且极大地降低了人力物力的消耗,对于测绘行业发展是非常有利的。文章重点分析了地理信息系统中GPS控制测绘技术的应用要点,旨在为业内人士提供一些建议和帮助。
测绘工程的质量管理与系统控制
Authors: 程 顺清 , 唐 颖
Published: April 2020

测绘工程可以为现代工程建设提供大量的科学的基础数据,从而在工程的建设工作中发挥出不可替代的作用。测绘工程是一项非常严谨的工作,对测绘质量有着较高的要求。但是我国国内的测绘工程常常出现一些质量管理方面的问题,影响了工程建设的顺利进行,并对工程质量造成一定程度的负面影响。
金属矿山井下测量常用方法及技巧
Authors: 陈 子文 , 吉 昱钦
Published: April 2020

随着我国综合实力的不断提高,我国各行各业的发展水平也跟着迈上了新的台阶,其在日常的生产经营过程中,对于金属矿山资源的需求量也越来越多,在一定程度上也促进了我国矿山开采行业的发展。金属矿山井下测量作为矿山开采的重要工作,对于其开采质量和开采效率方面有着重要的影响。基于此,文章就金属矿山井下测量工作的基本特征、金属矿山井下测量工作中的常见问题以及金属矿山井下测量常用方法及技巧进行了简单分析,希望对提高我国金属矿山井下测量工作的水平,充分发挥测量工作的作用等方面有所帮助。
基于水文分析方法的地性线自动提取
Authors: 连 金玲 , 李 玉芝 , 徐 志强
Published: April 2020

为有效解决地性线的自动提取质量问题,进行了在ArcGIS环境下地性线自动提取的实验,经对实验结果的分析认为：以规则格网DEM为数据源,基于水文分析模型自动提取地性线,数据完整、准确度高、现场操作简单易行,较好指导了现场测量。对今后地性线的提取具有一定的借鉴意义。
卫星图像辅助测绘技术在山洪治理工程地形测量中的应用
Authors: 阿布力米提 卡米力江 •
Published: April 2020

随着我国卫星技术的不断突破与革新,卫星图像更加精准与清晰,通过使用公共卫星图像辅助测绘小比例地形图技术逐渐成熟,使得我国利用卫星图像进行辅助测绘成为可能。目前,公共卫星观测技术和公共卫星使用市场在快速发展,利用公共卫星地图辅助测绘的数据采集更为精准,成本较低,工作效率较高,数据实用性和数据参考性较高,是山洪治理工程地形测量中的重要技术支持,有效的降低了地形测量中的劳动强度,提高了山洪治理工程作业的安全性。
Educação das relações étnico-raciais e prática pedagógica
Authors: Piva Caroline Tito Miranda
Published: April 2020

Este artigo elucida aspectos conceituais sobre a educação das relações étnico-raciais, potencializando o diálogo transdisciplinares entre os processos político-pedagógicos e a História da África e da Cultura Afro-brasileira nos currículos da escola básica, de modo que a educação das relações étnico-raciais garanta a construção de conhecimentos contextualizados e interseccionados, que promovam uma educação antirracista, de valorização, efetivação da história e cultura africana e afro-brasileira a qual contribui para a formação humanística, a compreensão das relações sociais e o enfrentamento das desigualdades. Pretende-se pesquisar as implicações político-pedagógicas da educação das relações étnico-raciais na prática pedagógica. Para tanto, revisa-se os estudos já concretizados por Nilma Lino Gomes (2011 e 2013), Antônio Flávio Moreira (2013) e Vera Maria Candau (2013), Miguel González Arroyo (2010), Beatriz Petronilha Gonçalves (2005), Ana Célia da Silva (2005), além dos documentos orientadores do Conselho Nacional de Educação (2004) e das Diretrizes Curriculares Nacionais para Educação das relações étnico-raciais (2004).
La politica regionale comunitaria nell'"età del disordine". Dallo "sviluppo armonioso" alle ragioni del mercato (1972-1987)
Authors: Bonatesta Antonio
Published: April 2020

Il saggio ricostruisce le trasformazioni intervenute nei paradigmi di intervento della politica regionalecomunitaria a partire dai primi anni Settanta, con l'avvio del negoziato per la creazionedel Fondo europeo di sviluppo regionale, fino all'Atto Unico Europeo. L'Autore individua in questoperiodo le fondamenta di una profonda transizione da modelli "interventisti" e "neomercantilisti" calibrati sul lato della domanda aggregata, caratteristici delle politiche regionali adoperatefino a quel momento da diversi Stati membri e in primo luogo dall'Italia, verso modelli più apertamenteneoliberisti. L'analisi della forte conflittualità in seno al Comitato di politica regionale,l'organo di rappresentanza delle tecnocrazie nazionali deputato a gestire il Fesr, e tra questo e laCommissione europea, consente all'Autore di rilevare come tale esito non fu affatto scontato. Adeterminarlo furono soprattutto il sovraccarico di obiettivi posti in capo alla politica regionalein un contesto di risorse scarse e il logoramento della fiducia nel ruolo dell'intervento pubblico
Numerical solution of advection-diffusion equation using finite difference schemes
Authors: Andallah LS , Khatun MR
Published: April 2020

This paper presents numerical simulation of one-dimensional advection-diffusion equation. We study the analytical solution of advection diffusion equation as an initial value problem in infinite space and realize the qualitative behavior of the solution in terms of advection and diffusion co-efficient. We obtain the numerical solution of this equation by using explicit centered difference scheme and Crank-Nicolson scheme for prescribed initial and boundary data. We implement the numerical scheme by developing a computer programming code and present the stability analysis of Crank-Nicolson scheme for ADE. For the validity test, we perform error estimation of the numerical scheme and presented the numerical features of rate of convergence graphically. The qualitative behavior of the ADE for different choice of the advection and diffusion co-efficient is verified. Finally, we estimate the pollutant in a river at different times and different points by using these numerical scheme.

Bangladesh J. Sci. Ind. Res.55(1), 15-22, 2020
Redes sociales académicas vs repositorios institucionales. ¿Por qué no las dos? Una reflexión desde la experiencia de trabajo en el repositorio Dadun, de la Universidad de Navarra
Authors: Cózar Santiago María Amparo
Published: April 2020

En el siguiente texto se hace una reflexión del éxito obtenido por las redes sociales académicas en comparación con los repositorios institucionales. Tras años trabajando en el repositorio institucional de la Universidad de Navarra, Dadun, se decidió aprovechar las ventajas de las redes sociales y de los repositorios, trabajando de forma conjunta.
Окремі питання, пов’язані з досудовим розслідуванням і судовим провадженням у медичних справах
Authors: СЕНЮТА ІРИНА
Published: April 2020

Все ми можемо протиставити інтересам держави, але тільки верховенство моралі та права у будь-якому випадку заслуговує на захист, повагу й охорону. Саме це має проходити “червоною ниткою” через усю діяльність органів влади, аби створити надійну систему, зокрема нормативну, спрямовану на дотримання, охоро ну і захист прав людини. Сфера надання медичної допомоги є вразливою, що зумов лено як ризиками, які пов’язані з медичною практикою, складністю орга нізму людини, так і перманентними трансформаціями галузі охорони здоров’я, що по роджують все нові й нові виклики, колізії та прогалини: від правотворчості до правореалізації і правозастосування. Дослідження на зрізі сфери медичної допомоги дуже ілюстративне, підсилюється тяжкістю наслідків, чутливістю цінностей і складністю відновлення справедливості.

Метою статті є викристалізація проблемних питань, пов’язаних із правореалізацією і правозастосуванням крізь призму правовідносин у сфері надання медичної допомоги та вироблення алгоритмів і практичних порад для їх вирішення з можливістю удосконалення чинного законодавства України щодо правових квестій.

У науковій розвідці використані такі методи наукового пізнання правових явищ: формально-юридичний – для комплексної характеристики законодавства в аналізованій царині; тлумачення права – для з’ясування змісту відповідних правових норм і сутності оцінних понять; вивчення юридичної практики – для узагальнення правозастосовної практики.

Досліджено окремі сегменти правового панно діяльності органів влади, пов’язаної з розслідуванням і судовим провадженням у медичних справах. Визначено необхідність нормативних удосконалень, із-поміж яких внесення змін до: ст. 70 Цивільного процесуального кодексу України (ЦПК України), ст. 65 Кримінального процесуального кодексу України (КПК України), наказу Міністерства охорони здоров’я України “Про удосконалення дитячої патологоанатомічної служби”. З’ясовано, що всі питання виконання вироку у кримінальному провадженні в частині вирішення цивільного позову повинні розглядатися судом за правилами КПК України із застосуванням до вказаних правовідносин норм ЦПК України, за умови, що вони не суперечать засадам кримінального судочинства. Встановлено, що ненадання на стадії виконання ст. 290 КПК України доступу до документів, які вивчав експерт, зокрема й медичної документації, автоматично не ставить під сумнів допустимість висновку цього експерта. Дослідження проводилося “дифузно”, адже є чимало загальних питань, які проектувалися на медичні справи, та є чимало контроверзій, що породжені спеціальною площиною і проникають у всі інші види правовідносин. Взаємопроникнення дає можливість використати принцип Європейського суду з прав людини “щодо всіх”: вирішення питання в одній сфері повинно “віддзеркалюватися” на інші, що гарантуватиме ефективність захисту прав людини.
Ecological connectivity with mangroves influences tropical seagrass population longevity and meadow traits within an island ecosystem
Authors: Mishra AK , Apte D
Published: April 2020

Seagrass meadows around the Andaman Sea are globally significant, but declining rapidly. Assessment of the existing seagrass population dynamics is essential to facilitate effective conservation measures. We studied population dynamics of the seagrass Thalassia hemprichii at 3 locations in the Andaman and Nicobar Islands in the Andaman Sea. At each location, 2 sites were assessed, one with mangroves (MG) and another without mangroves (WMG). Quadrat and corer sampling techniques were used to collect seagrass and sediment samples. Reconstruction techniques were used to derive population dynamics of T. hemprichii. Sand fractions dominated (>90%) the T. hemprichii meadows, with silt comprising a higher percentage only at the MG sites. The density, biomass, productivity and horizontal meadow migration of T. hemprichii were higher at the MG sites. The number of leaves shoot-1, vertical rhizome (VR), VR internode length, number of VRs shoot-1 and vertical growth were higher at the WMG sites. T. hemprichii required less time to produce a single leaf at the MG sites than at the WMG sites. Plants associated with mangroves had 4 to 5 yr of longevity, with higher numbers of younger plants. Population growth rates were positive at all sites except at the WMG site of Burmanallah. Our results provide evidence that mangrove ecosystems have a positive impact on seagrass meadow traits and population dynamics. Therefore, it is crucial to focus on the ecological connectivity between seagrasses and associated coastal ecosystems, as it is pivotal to increase our understanding of the important link between coastal ecosystems and ecosystem functioning.
“Perform'd in this wide gap of time”: A Stage History of The Winter's Tale
Authors: Baker Christopher
Published: April 2020

The stage history of Shakespeare's The Winter's Tale reflects changing critical perceptions about its themes as well as an evolution of theatrical production over a span of four centuries. First noted in astrologer Simon Forman's record of a performance on May 15, 1611, the play was popular with court audiences but disappeared from the stage when the theatres were closed at mid-century. It reappeared in a truncated performance on January 15, 1741. Nine months later David Garrick offered his abbreviated text—essentially a maudlin, three-act pastoral diversion—to popular appeal but critical censure. In 1802, John Philip Kemble's production presented a fuller, though Bowdlerized, text, featuring the great Sarah Siddons as Hermione. Hermione's role increasingly reflected the Victorian image of the selfless spouse who maintains her moral fiber under duress. During Charles Kean's directorship at the Princess's Theatre starting in 1850, the play acquired more lavish sets and scenery intended to reflect the historical context of the action, but the text sank under the weight of such ponderous efforts at realism. With the arrival of Harley Granville Barker's 1912 production at the Savoy Theatre, the play was returned to a more Elizabethan identity; a smaller, less cluttered stage permitted a faster-paced production with greater attention paid to Leontes as a psychologically fragile husband and monarch. This emphasis on the play as a study of the troubled marriage of a troubled king has persisted into the twentieth century as directors such as Jane Howell and Gregory Doran have lent this romance a convincing emotional depth.
Pandemics and Political Development: The Electoral Legacy of the Black Death in Germany
Authors: Gingerich Daniel , Vogler Jan
Published: April 2020

Do pandemics have lasting consequences for political behavior? We address this question by examining the consequences of the most deadly pandemic of the last millennium: the Black Death (1347-1351). Our claim is that pandemics can influence politics in the long run if they impose sufficient loss of life so as to augment the price of labor relative to other factors of production. When this occurs, labor repressive regimes (such as serfdom) become untenable, which ultimately leads to the development of proto-democratic institutions and associated political cultures that shape modalities of political engagement for generations. We test our theory by tracing out the local consequences of the Black Death in German-speaking Central Europe. We find that areas hit hardest by the pandemic were more likely to: (1) adopt inclusive political institutions and equitable land ownership patterns; (2)exhibit electoral behavior indicating independence from landed elite influence during the transition to mass politics.
A Collaborative Approach for an Integrated Modeling of Urban Air Transportation Systems
Authors: Niklaß Malte , Dzikus Niclas , Swaid Majed , Berling Jan , Lührs Benjamin , Lau Alexander , Terekhov Ivan , Gollnick Volker
Published: April 2020

The current push in automation, communication, and electrical energy storage technologies has the potential to lift urban mobility into the sky. As several urban air mobility (UAM) concepts are conceivable, all relevant physical effects as well as mutual interrelations of the UAM system have to be addressed and evaluated at a sufficient level of fidelity before implementation. Therefore, a collaborative system of systems modeling approach for UAM is presented. To quickly identify physical effects and cross-disciplinary influences of UAM, a pool of low-fidelity physical analysis components is developed and integrated into the Remote Component Environment (RCE) workflow engine. This includes, i. a., the disciplines of demand forecast, trajectory, vertiport, and cost modeling as well as air traffic flow and capacity management. The definition and clarification of technical interfaces require intensive cooperation between specialists with different areas of expertise. To reduce this communication effort, the Common Parametric Aircraft Configuration Schema (CPACS) is adapted and used as central data exchange format. The UAM system module is initially applied for a 24-hour simulation of three generic networks in Hamburg City. After understanding the basic system-level behavior, higher level analysis components and feedback loops must be integrated in the UAM system module for evaluation and optimization of explicit operating concepts.
Prevalence and Antimicrobial Susceptibility Patterns of Bacterial Pathogens in Urinary Tract Infections in University Hospital of Campania “Luigi Vanvitelli” between 2017 and 2018
Authors: Folliero Veronica , Caputo Pina , Della Rocca Maria Teresa , Chianese Annalisa , Galdiero Marilena , Iovene Maria R. , Hay Cameron , Franci Gianluigi , Galdiero Massimiliano
Published: April 2020

Urinary tract infections (UTIs) are the most common and expensive health problem globally. The treatment of UTIs is difficult owing to the onset of antibiotic-resistant bacterial strains. The aim of this study was to define the incidence of infections, identify the bacteria responsible, and identify the antimicrobial resistance profile. Patients of all ages and both sexes were included in the study, all admitted to University Hospital of Campania “Luigi Vanvitelli”, between January 2017 and December 2018. Bacterial identification and antibiotic susceptibility testing were performed using matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) and Phoenix BD. Among the 1745 studied patients, 541 (31%) and 1204 (69%) were positive and negative for bacterial growth, respectively. Of 541 positive patients, 325 (60%) were females, while 216 (39.9%) were males. The largest number of positive subjects was recorded in the elderly (>61 years). Among the pathogenic strains, 425 (78.5%) were Gram-negative, 107 (19.7%) were Gram-positive, and 9 (1.7%) were Candida species. The most isolated Gram-negative strain is Escherichia coli (E. coli) (53.5%). The most frequent Gram-positive strain was Enterococcus faecalis (E. faecalis) (12.9%). Gram-negative bacteria were highly resistant to ampicillin, whereas Gram-positive bacteria were highly resistant to erythromycin.
High Glucose Concentrations Affect Band 3 Protein in Human Erythrocytes
Authors: Morabito Rossana , Remigante Alessia , Spinelli Sara , Vitale Giulia , Trichilo Vincenzo , Loddo Saverio , Marino Angela
Published: April 2020

Hyperglycemia is considered a threat for cell homeostasis, as it is associated to oxidative stress (OS). As erythrocytes are continuously exposed to OS, this study was conceived to verify the impact of either diabetic conditions attested to by glycated hemoglobin (Hb) levels (>6.5% or higher) or treatment with high glucose (15–35 mM, for 24 h) on erythrocyte homeostasis. To this aim, anion exchange capability through the Band 3 protein (B3p) was monitored by the rate constant for SO42− uptake. Thiobarbituric acid reactive species (TBARS), membrane sulfhydryl groups mostly belonging to B3p, glutathione reduced (GSH) levels, and B3p expression levels were also evaluated. The rate constant for SO42− uptake (0.063 ± 0.001 min−1, 16 min in healthy volunteers) was accelerated in erythrocytes from diabetic volunteers (0.113 ± 0.001 min−1, 9 min) and after exposure to high glucose (0.129 ± 0.001in−1, 7 min), but only in diabetic volunteers was there an increase in TBARS levels and oxidation of membrane sulfhydryl groups, and a decrease in both GSH and B3p expression levels was observed. A combined effect due to the glycated Hb and OS may explain what was observed in diabetic erythrocytes, while in in vitro hyperglycemia, early OS could explain B3p anion exchange capability alterations as proven by the use of melatonin. Finally, measurement of B3p anion exchange capability is a suitable tool to monitor the impact of hyperglycemia on erythrocytes homeostasis, being the first line of high glucose impact before Hb glycation. Melatonin may be useful to counteract hyperglycemia-induced OS at the B3p level.