bluuebunny/crossref_metadata_2025 huggingface dataset:
促进学生主体参与的初中英语课堂教学建构
Authors: 桑 春萍
Published: September 2020

在当前新时期的发展背景下，初中英语教师要想更好地达到课堂教学目标、满足教学要求，必须明确学生主体参与意识有效培养的重要性。在当前的初中英语课堂教学中，由于传统教学观念的局限以及教师错误的教学理念，使得课堂有效性难以得到提升，学生的学习积极性得不到有效的激发，最终导致英语核心素养无法得到有效的培养。在这样的现实发展背景下，本文将以促进学生主体参与为出发点，针对如何构建教学有效性更高的初中英语课堂进行深入研究。
小学音乐教学的课堂导入技巧探究
Authors: 汤 颖
Published: September 2020

就目前我国小学教育的现状来看，音乐作为其中的一门艺术学科，能够在一定程度上培养学生陶冶艺术情操，同时也是加强学生对艺术审美能力的主要途径。再加上我国目前重点培养学生“德智体美劳”发展理念，从而逐渐的增加了教师对音乐教学的效果。而且在小学音乐课堂教学中，课堂导入教学模式是整个音乐课堂教学中最关键的一项环节，同时这样的教学模式在很大的程度上决定了学生是否充分的参与到课堂学习中。因此本文就根据我国目前小学音乐教学的课堂导入技巧展开深入的研究与探析。
关于幼儿STEM教育现状的调查与分析
Authors: 张 怡翎
Published: September 2020

STEM在中国学前教育领域逐步流行起来，幼儿STEM教育意义逐渐凸显起来，幼儿STEM课程体系和幼儿教师教学能力都获得了相应的发展。本文系统调查和分析我国幼儿STEM教育现状，希望能够为全面开展幼儿STEM教育提供有价值的参考和借鉴。
学前教育专业改革的探讨
Authors: 赵 青
Published: September 2020

2012年，中华人民共和国教育部发布了《幼儿园教师专业标准（试行）》，其中强调了幼儿园教师应“结合学前教育和幼儿园教育理论，强调育儿实践技能”的基本概念。随着幼儿园教师专业技能要求的提高，幼儿园教育必须适应现代社会发展和教育改革的需要，寻求具体的改革策略。本文首先总结了幼儿园教育专业的内容，然后讨论了幼儿园教育专业的改革和发展趋势，包括幼儿园教师人才选拔方法的改革。
分析心理健康教育在中职中的教学措施
Authors: 王 红
Published: September 2020

国家对未来人才的要求越来越高，家长望子成龙望女成凤的心态使得学生的压力不比成人少。中职生本就考试失利，想靠着一门手艺进入社会，但是来自多方面的压力和影响，导致学生的心理出现了一定的问题。国家需要的是全方面发展的高素质人才，心理健康也是包含在内的。所以在教学过程中，教师要重视学生的心理健康。本文从"根据学生平时情况采取针对性措施""根据学生情况实施分层教育""消除学生顾虑健全服务体系"分析了心理健康教育在中职中的教学措施。
小学数学教学中发散性思维的培养初探
Authors: 王 艳
Published: September 2020

发散思维又被成为多向思维，是指大脑在思考时呈现的一种扩散状态的思维模式。发散思维的培养有助于培养学生多角度观察问题，全方位分析问题，用不同的途径去解决问题，进而寻求答案的一种思维能力。而小学作为学生思维发展的初始时期，在小学数学教学中培养学生的发散思维为其今后的学习和发展具有重要的奠基作用。而本文便是基于这一思考，针对如何在小学数学的教学中培养学生的发散思维而展开的探讨。
微课资源在小学数学课堂教学中的应用研究
Authors: 周 文君
Published: September 2020

数学是小学教学中重要的课程之一，但是由于小学阶段，学生注意力难以集中，理解能力有限，导致当前小学数学教学普遍具有难度高、效果差、学生学习兴趣不高等问题。为此，小学数学教师们不断改善教学方式，引入多样化教学资源，微课资源就是其中较为成熟和重要的一种。本文对比分析传统数学教学方式和利用微课资源教学的不同，并据此提出微课资源在小学数学课堂教学中的应用策略，希望能够为小学数学教师课堂教学提供一些拙见。
优化班级管理 开展道德教育——班主任德育工作之我见
Authors: 戴 南询
Published: September 2020

班主任在日常教学与班级管理中具有重要的地位,承担着重要的育人职责。在素质教育深入推行背景下,班主任在班级管理过程中如何更针对性的开展道德教育,如何更好地引导学生成长发展是班主任在日常工作中需要深入思考的问题。班主任在日常的管理工作中应该特别注重对学生的德育教育,做到"管育并重",进一步帮助学生树立正确的思想观和价值观。本文笔者首先对班主任德育工作的现状进行了分析,并探讨了提高班主任德育工作成效的策略,以供参考。
浅析初中语文教学中学生课外阅读的兴趣培养
Authors: 修 金平
Published: September 2020

对于现在的初中语文教学来说，尤其是面对新课改后的教育环境，对于初中学生的学习能力有了更高的要求，仅仅依靠教材中的知识并不能满足学生综合素质的培养。本篇文章通过对课外阅读在初中语文学习的重要性进行分析，来探讨如何在语文教学中培养学生对于课外阅读的兴趣。
浅谈小学数学课堂中互动交流的重要性
Authors: 许 细金
Published: September 2020

良好的师生互动交流不仅促进了学生课堂参与的主动性，同时促进了学生表达能力，思维能力和创造能力的发展，让学生具备了浓厚的数学学习兴趣。因此，我们在小学数学课堂教学中进行师生互动的研究就具有十分积极的意义，教师在师生互动的过程中变成了组织者、引导者、合作者，为学生创建了良好的互动环境，促进了学生的课堂参与，实现了情景服务于课堂，提高了课堂教学的效率。本文针对当前小学数学课堂师生互动的重要性，探讨师生互动的一些策略和方法，希望为大家带来一些思路和帮助。
初中生物教学中知识网络的构建
Authors: 杨 帆
Published: September 2020

作为一门在知识体系和教学方法上都独具特色的学科，生物具有其自身的独特性。因此，学生在学习生物的时候可以通过系统记忆的方式来进行学习。在初中生物学科中，各类庞杂的知识如果能够通过对其进行有效的网络体系构建，那么就能够很好地增强学习效果。
借助多媒体构建高效初中历史课堂
Authors: 杨 振雨
Published: September 2020

信息技术的飞速发展，推动了教育的不断变化。《基础教育课程改革纲要(试行)》指出：“大力推进多媒体信息技术在教学过程中的普遍应用，促进信息技术与学科课程的整合，逐步实现教学内容的呈现方式、学生的学习方式、教师的教学方式和师生互动方式的变革，充分发挥信息技术的优势，为学生的学习和发展提供丰富多彩的教育环境和有力的学习工具。” 教师运用现代多媒体信息技术对教学活动进行创造性设计，发挥计算机辅助教学的特有功能，把信息技术和初中历史教学的学科特点结合起来，可以使教学的表现形式更加形象化、多样化、视觉化、高效化，有利于充分揭示历史概念的形成与发展，使历史课堂教学收到事半功倍的效果。
小学数学教学中微课的应用探讨
Authors: 叶 俏
Published: September 2020

现代教育提倡以学生为中心，让学生快乐、主动地学习。然而，在板书加口语讲解的教学模式下，学生基本都是被动学习，很少有自主思考与学习的空间，自身的主体性难以体现，因而难以达到快乐、主动的学习目标。微课的出现，为小学数学教学提供了一个新方向，助推了教学模式改革，提高了课堂活跃性，很好地满足了学生快乐、主动学习的需求。微课是一种新型的教学资源，其在小学数学教学中的应用，能够丰富教学内容，拓展教学渠道，为数学教学带来积极变化。基于此，笔者结合大量教学实践，分析了微课在小学数学教学中的应用价值。同时，从课前预习、课堂导入、难题教学、课堂练习、课后复习等方面简要分析了微课在小学数学教学中的具体应用情况。
有效运用读写联动，提升自主阅读能力
Authors: 张 华娟
Published: September 2020

阅读作为一种作为基本的获取知识的途径，其在学生的终身发展历程中发挥着重要的作用。要想使学生在小学阶段就获得语文素养的发展，养成良好的语文阅读习惯，教师需要对学生的自主阅读能力加以培养。自主阅读该理念是以自主学习为基础的，根据现代教育的有关要求，对学生自主阅读的引导，首先要教给学生有效的阅读方法，使学生爱上阅读，在积极地阅读活动参与中获得自主阅读能力的提升。在本文中，笔者主要就如何在中年级阅读教学活动开展中培养学生的自主阅读能力进行详细说明。
初中学校的管理方法研究
Authors: 周 浩明
Published: September 2020

如今已经是互联网的时代，移动互联网更是深入到千家万户，这对于学生来讲获取信息更加方便，所以学生的思维也是相对比较发散的，对于学生的管理工作会更加难。教师要注重学生的成绩提升，同时还要加强学生的道德教育，让每一个学生都能够养成正确的“三观”，培养良好的习惯，这样才能够做一个对社会有用的人。在初中阶段的学生比较叛逆，而且更愿意去了解外面的世界，所以管理工作更是非常难的，对于初中学校的管理应该要讲究方法，才能够更加高效。本文将从转变管理观念、采取鼓励教育、加强治安管理三方面来研究初中学校的管理方法。
探究科普剧在小学科学教育中的开发
Authors: 朱 小兰
Published: September 2020

科普剧是指将科学知识通过舞台剧、相声、小品的方式展现，以舞台剧的形式，传播、教授科学知识的教学形式。科普剧寓教于乐，对提高学生学习的主动性、积极性具有重要意义。文章从分析科普剧的特点入手，重点探究现状下提高科普剧在教学实验中的开发利用效率的办法。
有效的教师语言，有效的阅读教学
Authors: 邹 丙生
Published: September 2020

科学的教学发展观认为，能有效促进学生发展的教学，必须建立在学生的最近发展区的基础上；必须要高度重视学生的学习过程；注重激发其精神需要，关注所有学生的发展需要。我们讨论阅读教学的有效性问题必先认识阅读教学，界定教学有效性的内涵与外延。
游戏在幼儿园教育教学中的运用研究
Authors: 谢 昌华
Published: September 2020

幼儿在其成长过程中，由于天性活泼，喜欢做游戏，通过游戏教学法的合理运用，能够让幼儿积极地参与到教学活动中来。也正因为此，现今绝大多数的幼儿园都将游戏视为开展教育活动的重要手段，借此使幼儿在享受快乐的同时，还能获得知识水平以及综合能力的提升。那么，究竟如何有效地在幼儿园教学中应用游戏呢？结合自身的经验谈谈看法，希望能给幼儿教育的进步“添砖加瓦”。
浅析中职学校计算机专业学生职业技能培养路径
Authors: 王 金海
Published: September 2020

近些年来，我国经济获得长足发展，而在经济建设整体发展期间，我国对于技能型的人才整体需求不断增大。在国内，中职院校主要为我国培养大量技能型的人才。而在信息时代之下，中职院校必须注重培养计算机这一专业当中学生具有的职业技能，进而让学生毕业之后快速适应企业要求，不断提高其就业能力。本文在分析培养中职院校当中计算机系学生的职业技能的重要性的基础上，对培养中职院校当中计算机系学生的职业技能的具体途径展开探究，希望能够给中职院校提供相应参考。
高中英语实施有效教学的思考与实践
Authors: 郭 妮 , 李 琴 , 李 瑾瑾
Published: September 2020

有效教学（effective teaching）的理念源于20世纪上半叶西方的教学科学化运动，在美国实用主义哲学和行为主义心理学影响的教学效能核定运动后，引起了世界各国教育学者的关注。20世纪以前在西方教育理论中占主导地位的教学观是“教学是艺术”。但随着20世纪以来科学思潮的影响，以及心理学特别是行为科学的发展，人们意识到，教学也是科学。即教学不仅有科学的基础，而且还可以用科学的方法来研究。于是，人们开始关注教学的哲学、心理学、社会学的理论基础，以及如何用观察、实验等科学的方法来研究教学问题。有效教学就是在这一背景下提出来的。
行为示范,立德树人——高中班主任德育工作的实施策略
Authors: 岑 梨
Published: September 2020

伴随着时代的不断进步，我国对于教育事业的重视力度在不断加强，在进行教育的过程中，教师要坚持立德树人的教育理念，这样才能使学生在学习的过程中树立正确的人生观、价值观和世界观，才能适应社会的不断进步和发展。班主任是教育学生的重要人物。班主任的一言一行都将对学生产生影响，是学校教育学生的重要责任人。要想实现立德树人的艰巨任务，必须要有明确的教育方式和教育理念，只有将素质教育和教育理念贯穿一线才可能实现。因此，为了进一步提升班级管理，本论文以立德树人作为研究核心和重点，寻求最好的教育理念和教育方式去实现这一目标。
基于核心素养的高中物理教学初探
Authors: 颜 景霄
Published: September 2020

核心素养的提出与发展：本世纪初，经济合作与发展组织(OECD)率先提出了“核心素养”结构模型。它要解决的问题是：21世纪培养的学生应该具备哪些最核心的知识、能力与情感态度，才能成功地融入未来社会，才能在满足个人自我实现需要的同时推动社会发展?2014年教育部研制印发《关于全面深化课程改革落实立德树人根本任务的意见》，提出"教育部将组织研究提出各学段学生发展核心素养体系，明确学生应具备的适应终身发展和社会发展需要的必备品格和关键能力"。
影响大学生信息素养培养的因素及改进策略
Authors: 陶 敏慧 , 苏 小乐 , 范 娜 , 周 玫娟 , 张 宁
Published: September 2020

随着我国进入了网络信息时代，信息素质是人们生存和发展的保障和基础，因此应该注重提高学生们的信息素养，面对当下大学生信息素培养存在的问题，必须要针对影响到大学生信息素养培养的制约因素，采取有效的应对措施，才能够全面提高大学生的信息素养。本文主要围绕影响大学生信息素养培养的因素及改进措施展开分析和论述，首先介绍大学生信息素养的概念和特征，然后分析影响到大学生信息素养培养的因素，最后提出全面提高大学生信息素养的有效途径。
高中地理教学中核心素养的构建与培养
Authors: 张 黄华
Published: September 2020

核心素养内涵丰富是实现学校教育价值和确立人才质量标准的基础和核心，影响个人的终身发展，更影响个体对社会时代发展的适应能力，高中阶段是培养学生核心素养的重要时刻。因此，本文从激发学生兴趣培养人地协调观素养、增强课堂互动性去培养区域认知素养和联系生活实际教学培养综合思维素养三个方面讨论了在高中地理教学中培养学生的核心素养，从而让学生的地理知识能够更好的提高。
积攒课堂心得，提高小学体育教学效果
Authors: 王 海强
Published: September 2020

如果把学生比作一张白纸，那么老师毫无疑问就是那个执笔画未来的人。学生和教师本身就具有不可分割的联系，而这也是“教”与“学”两者并存的重要支撑。与学生们一起成长也是我的一个愿望。在素质教育背景下，教育教学对学生的综合素质也提出了较高的要求，要求学生不单单要具备雄厚的物质基础，还应拥有高尚的道德品质，因此，在教育教学中如何渗透德育思想也成了各科任课老师研究的重点内容，体育教学自然也不例外。“百年大计，教育为本”，其中的“育”，就是育人，就是要将学生培育成符合未来发展的综合型人才。关于小学体育教学中的德育思想渗透，对于体育教师来说也是一个新的挑战，但是，只要每天多一份努力，多一份思考，肯定会多一份感悟，下文我就简单谈一谈如何在小学体育中完善学生的思想品格。
小学数学教学中数学游戏的实施
Authors: 钟 碧清
Published: September 2020

在小学数学教学中，教师应优化学生的学习能力，综合利用游戏方式激发学生的学习兴趣，综合开展游戏化教学模式，充分发挥学生学习的主动性与积极性，从而提升学生学习效率。
浅谈如何在初中化学教学中进行环保教育
Authors: 王 孔专
Published: September 2020

近些年我国经济发展极其迅速，取得了许多显著的成就，但是在经济快速发展的同时环境问题也日益突出。空气质量不断恶劣、水资源污染越来越严重、森林大量被砍伐，人类赖以生存的自然环境受到了严重的破坏，甚至导致许多珍惜的物种面临灭绝的灾难，同时环境不断恶劣的环境给人的生命健康也带来了很大危害。因此，保护生态环境成为当今的一个热点话题。现代教育要与社会发展大趋势相契合，初中化学教育要融入环保教育。本文主要围绕如何在初中化学教育中进行环保教育展开探讨，希望给相关教师与学生提供参考。
Il Sessantotto ha cinquant'anni. Note di storiografia
Authors: Tolomelli Marica
Published: September 2020

In occasione del cinquantesimo anniversario dei tumultuosi eventi culminati nel Sessantottola storiografia italiana " e non solo, evidentemente, ma è su questa che il saggio si sofferma" si è mostrata indubbiamente vivace anche se forse non proprio scoppiettante quanto aoriginalità. Sul piano editoriale questa vivacità si è manifestata nella pubblicazione di un considerevolenumero di studi di cui non è possibile rendere conto in maniera esaustiva in questasede data l'eterogeneità degli approcci, dei livelli analitici e delle interpretazioni proposte.Svilupperò pertanto alcune considerazioni in merito a una scelta ragionata di testi in mododa rendere conto di alcune delle direttrici più significative della ricerca in merito sia agli approccimetodologici sia alle interpretazioni e alle chiavi di lettura che ne emergono. In ordinealfabetico trattasi di: Michele Battini, Un sessantotto, Milano, 2018; Guido Crainz (a curadi), Il Sessantotto sequestrato. Cecoslovacchia, Polonia, Jugoslavia e dintorni, Roma, 2018;Marcello Flores, Giovanni Gozzini, 1968. Un anno spartiacque, Bologna, 2018; Monica Galfré,La scuola è il nostro Vietnam. Il '68 e l'istruzione secondaria italiana, Roma, 2019; PaoloPombeni, Che cosa resta del '68, Bologna, 2018; Francesca Socrate, Sessantotto. Due generazioni,Roma-Bari, 2018.
Storicizzare il welfare italiano in prospettiva globale e transnazionale: un'analisi in ottica di genere
Authors: Inaudi Silvia
Published: September 2020

Il contributo propone un'analisi della storiografia italiana sul welfare, con particolare attenzionealle ricerche gender-oriented, allo scopo di individuare acquisizioni, problemi apertie prospettive, attraverso il confronto con il panorama internazionale. Scopo del contributoè mostrare come queste ricerche possano compiere ulteriori progressi facendo proprio un approcciotransnazionale e globale in senso lato, proponendo anche una serie di temi e questionipossibili da affrontare.
L'amministrazione Carter e la "questione comunista" in Italia: elaborazione e azione politica, 1976-1978
Authors: Ciulla Alice
Published: September 2020

Il democratico Jimmy Carter venne eletto presidente degli Stati Uniti nel novembre del 1976.Pochi mesi prima, il Partito comunista italiano (Pci) aveva ottenuto uno straordinario risultatoelettorale che aveva garantito incarichi istituzionali ad alcuni suoi esponenti. Durante lacampagna elettorale, i membri dell'entourage di Carter rilasciarono dichiarazioni che sembravanopreludere all'abbandono del veto anticomunista posto dai governi precedenti e per circaun anno dall'insediamento l'amministrazione mantenne una posizione ambigua. Il 12 gennaio1978, tuttavia, gli Stati Uniti ribadirono ufficialmente la contrarietà a qualsiasi forma dipartecipazione dei comunisti nel governo italiano. Utilizzando fonti di natura diversa e includendonell'analisi una pluralità di attori non statali tra cui think tank e centri di ricerca universitari,questo saggio mira a ricostruire il dibattito interno all'amministrazione Carter sulla "questione comunista" in Italia e a collocarlo all'interno di una discussione più ampia che attraversòla cultura liberal statunitense.
Effects of a General Osteopathic treatment on asthmatic children
Authors: Ernoult B. , Job H.
Published: September 2020

Aim. Up to 10 % of population suffer from asthma. Asthma often means managing a treatment with limited action on a daily basis. The study aim was to assess the impact of a General Osteopathic treatment (GOT) on the respiratory function in asthmatic children.

Method. 15 asthmatic subjects, aged 4 to 15, diagnosed by an allergologist, received one GOT session. Objective results were obtained through a bodyplethysmography measure before and after treatment. Variables observed were: Tiffeneau′s coefficient, mean expiratory fl ow from small bronchial tubes, bronchial resistances and residual capacity.

Results. Comparison between result before and after treatment showed a significant improvement of all measures after the GOT.

Conclusions. On a short term basis, a session of GOT allows to asthmatic child to improve its lung capacity. Including Osteopathy in the pluridisciplinary care of asthmatic children appears to be relevant.
KORELASI KADAR CD4 DENGAN KADAR HEMOGLOBIN SEBELUM TERAPI ARV PADA PENDERITA HIV/AIDS DI RSUD DR. H. ABDUL MOELOEK PROVINSI LAMPUNG TAHUN 2017
Authors: Hasbie Neno Fitriyani , Detty Ade Utia , Syuhada Syuhada , Mediana Meta
Published: September 2020

Pada pasien HIV, ada banyak kelainan klinis yang didapat. Abnormalitas hematologi adalah salah satu manifestasi paling umum dari infeksi human immunodeficiency virus (HIV) tingkat lanjut dan acquired immunodeficiency syndrome (AIDS).Jumlah sel darah merah rendah, adalah yang paling umum dari gangguan ini. Frekuensi dan keparahan manifestasi hematologi dapat mempengaruhi jumlah CD4 dan kadar hemoglobin. Tujuan penelitian ini adalah untuk mengetahui korelasi kadar CD4 dan kadar Hemoglobin sebelum terapi ARV pada penderita HIV/AIDS di RSUD DR. H. Abdul Moeloek Provinsi Lampung Tahun 2017. Penelitian ini merupakan sebuah studi cross sectional dilakukan dari rekam medis dari Januari hingga Desember 2017 di RSUD DR. H. Abdul Moeloek Provinsi Lampung. Sebanyak 102 pasien dipilih menggunakan purposive sampling. Analisis menggunakan analisa univariat dan bivariat dengan uji spearman.Hasil penelitian menunjukkan bahwa tingkat rata-rata tingkat hemoglobin adalah 12,421 ± 12,7 gr / dl dan tingkat CD4 rata-rata adalah 151,36 ± 89,0 sel / mm3. Ada hubungan yang bermakna dengan kadar CD4 dan kadar hemoglobin sebelum terapi ARV, nilai p = 0,00 (nilai-p <0,05). Koefisien korelasi sebesar 0,458 menunjukkan korelasi positif dengan kekuatan sedang.H1 diterima dengan korelasi positif lemah. Secara statistik signifikan antara kadar Hemoglobin dengan kadar CD4 pada penderita HIV/AIDS yang belum mendapatkan terapi ARV sehingga dapat digunakan sebagai penanda penurunan kadar CD4.
HUBUNGAN LINGKUNGAN RUMAH DENGAN KEJADIAN MALARIA DI DESA SIDODADI KABUPATEN PESAWARAN TAHUN 2018
Authors: Utami Deviani , Triwahyuni Tusy , Julita Yelin
Published: September 2020

Malaria masih merupakan masalah kesehatan di Indonesia. Desa Sidodadi merupakan salah satu desa di Kabupaten Pesawaran yang endemis malaria dengan API (Annual Parasite Insidence) pada tahun 2018 dari bulan ke bulan semakin meningkat. Pada bulan Agustus penderita mencapai 63 orang, meningkat menjadi 72 orang di bulan September dan di bulan Oktober angka penderita malaria menjadi 111 orang. Kejadian malaria disebabkan adanya kontak manusia dengan nyamuk malaria dan didukung oleh kondisi lingkungan yang kurang baik. Mengetahui hubungan lingkungan rumah dengan kejadian malaria di Desa Sidodadi Kabupaten Pesawaran tahun 2018. Penelitian ini bersifat observasional analitik dengan pendekatan case control. Teknik pengambilan sampel yang digunakan yaitu random sampling. Data kejadian malaria diperoleh dari data sekunder dengan hasil laboratorium positif malaria di Puskesmas Hanura dan data kondisi fisik rumah diperoleh dari hasil pengisian lembar observasi, serta dianalisis berdasarkan univariat untuk mengetahui distribusi frekuensi dan bivariat dengan menggunakan uji chi-square. Dari 62 responden (31 kasus dan 31 kontrol). Hasil penelitian menunjukkan terdapat hubungan semak-semak di lingkungan rumah dengan kejadian malaria dengan nilai p-value 0,000 (OR=7,028), terdapat hubungan kandang ternak di lingkungan rumah dengan kejadian malaria dengan nilai p-value 0,000 (OR=7,028) dan terdapat hubungan genangan air/parit di lingkungan rumah dengan kejadian malaria dengan nilai p-value 0,000 (OR=14,175). Kesimpulannya bahwa lingkungan rumah menunjukkan adanya hubungan yang bermakna terhadap kejadian malaria maka disarankan adanya penyuluhan bagi masyarakat serta perbaikan dan kebersihan pada lingkungan rumah.
Pengaruh Trait Kepribadian terhadap Aktivitas Fisik
Authors: Angguna Welan Mauli
Published: September 2020

ABSTRACT: THE EFFECTS OF PERSONALITY TRAITS ON PHYSICAL ACTIVITY Indonesia was considered as a country who has low physical activity. Hence, it was necessary to promote physical activity in order preventing degenerative disease and death in young adults. Personality traits were good predictors of physical activity. The purpose of this study was to examine the effects of personality traits on physical activity. This is a survey analytical study cross-sectional design on 33 samples aged 18-26 years old. The study found that personalities traits influenced physical activity with contribution 32% (p≤0,05), especially of extraversion, agreeableness, and openness. There was significant difference of physical activity based on gender and exercise routine, this should be a consideration for further research.  Keywords: Personality Traits, Physical Activity, Gender.  Indonesia dianggap sebagai negara dengan aktivitas fisik yang cukup rendah, sehingga diperlukan promosi aktivitas fisik untuk pencegahan terhadap penyakit degeneratif dan kematian di usia muda. Trait kepribadian dianggap sebagai faktor psikologis kuat dalam identifikasi aktivitas fisik. Penelitian ini adalah survei analitik dengan rancangan cross-sectional pada 33 sampel usia 18-26 tahun yang rutin dan tidak rutin berolahraga. Hasil penelitian menunjukkan bahwa trait kepribadian berkontribusi sebesar 32% (p≤0,05) terhadap aktivitas fisik, khususnya trait ekstraversi, agreeableness, dan openness. Adanya perbedaan signifikan aktivitas fisik dan trait kepribadian antar gender dan rutinitas berolahraga, hal ini disarankan menjadi pertimbangan untuk penelitian lanjutan. Kata Kunci: Trait Kepribadian, Aktivitas Fisik, Gender.
Hubungan Forgiveness dengan Subjective Well-Being pada Remaja di Panti Asuhan
Authors: Septarianda Eka , Malay Mohammad Nursalim , Ulfah Khoiriyah
Published: September 2020

ABSTRACT: RELATIONSHIP BETWEEN FORGIVENESS AND SUBJECTIVE WELL BEING AMONG ORPHANAGE ADOLESCENTSThis study aims to determine the relationship between forgiveness and subjective well-being in adolescents who are in the orphanage, through the three components contained in it, i.e. life satisfaction, positive affect and negative affect. The subjects of this study were 58 adolescents in the Budi Mulya Muhammadiyah Sukarame orphanage. Data collection method using three scales, those are Heartland Forgiveness Scale (HFS), Satisfaction with Life Scale (SWLS) and Possitive and Negative Affect Schedule (PANAS). The data analysis technique used is the product moment correlation. The results of the analysis of this study explain that there is a positive relationship between forgiveness and subjective well-being through the three components in SWB. The results of this study have implications about the importance of forgiveness in increasing subjective well being in orphanage adolescent.Keywords: Forgiveness, Subjective Well-Being, Orphanage AdolescentPenelitian ini bertujuan untuk mengetahui hubungan forgiveness dengan subjective well-being pada remaja yang berada di panti asuhan, melalui tiga komponen yang terdapat di dalamnya, yaitu life satisfaction, positive affect dan negative affect. Subjek penelitian ini adalah 58 remaja panti asuhan Budi Mulya Muhammadiyah Sukarame. Metode pengumpulan data menggunakan tiga skala, yaitu Heartland Forgiveness Scale (HFS), Satisfaction with Life Scale (SWLS) dan Possitive and Negative Affect Schedule (PANAS). Data dianalisis dengan korelasi product moment. Hasil penelitian ini menerangkan bahwa terdapat hubungan yang positif antara forgiveness dengan subjective well-being melalui tiga komponen dalam SWB. Hasil penelitian ini memberi implikasi tentang pentingnya forgiveness dalam meningkatkan subjective well being pada remaja dipanti asuhan.Kata Kunci: Forgiveness, Subjective Well Being, Remaja Panti Asuhan
PENGARUH TEMAN SEBAYA DAN REGULASI DIRI DALAM BELAJAR PADA MAHASISWA
Authors: Sumia Dede , Sandayanti Vira , Detty Ade Utia
Published: September 2020

ABSTRACT : PEER INFLUENCE AND SELF REGULATED LEARNING IN COLLEGE STUDENTS Self-regulated learning is an independent and active way of learning to achieve academic goals. Peers have a significant role in the development of students' ability to process information and increase learning motivation. This study aims to determine the relationship between peer influence and self-regulation in student learning. This study used a quantitative approach with a cross sectional design. The research sample consisted of 123 students of the Malahayati University Faculty of Medicine. Data analysis using the Spearman test on the SPSS 20 application with a significance level in this study was set with a value of p <0.05. The results showed a significant positive relationship between peer influence and self-regulation in student learning. The results of this study have implications related to the development of self-regulated learning through the role of peers. Keyword: Self Regulated Learning, Peer Influence, College Students  Regulasi diri dalam belajar (self regulated learning) adalah cara belajar mahasiswa aktif secara individu untuk mencapai tujuan akademik.Teman sebaya memiliki peran yang signifikan dalam perkembangan kemampuan mahasiswa memproses informasi dan meningkatkan motivasi belajar. Penelitian ini bertujuan untuk mengetahui hubungan pengaruh teman sebaya dengan regulasi diri dalam belajar pada mahasiswa. Penelitian ini menggunakan pendekatan kuantitatif dengan rancangan cross sectional. Sampel penelitian berjumal 123 mahasiswa Fakultas Kedokteran Universitas Malahayati. Analisis data menggunakan uji Spearman pada aplikasi SPSS 20 dengan tingkat kemaknaan pada penelitian ini ditetapkan dengan nilai p < 0,05. Hasil penelitian menunjukkan adanya hubungan positif yang signifikan antara pengaruh teman sebaya dengan regulasi diri dalam belajar pada mahasiswa. Hasil penelitian ini memberikan implikasi terkait pengembangan self regulated learning melalui peran teman sebaya. Kata Kunci: Regulasi diri dalam belajar, Pengaruh Teman Sebaya, Mahasiswa
The Effect of the Jigsaw Cooperative Learning Model and the Student’s Initial Mathematical Abilities and Its Effect on the Mathematical Representation Ability and Learning Motivation of Students in the PAB 10 Sampali Private Elementary School
Authors: Rambe Nurhamimah , Syahputra Edi , Elvis E.
Published: September 2020

The Influence of Jigsaw Cooperative Learning Model on Mathematical Representation Ability and Student Learning Motivation at PAB 10 Sampali Private Elementary School. Thesis. Medan: UNIMED Postgraduate Program, 2020. This study aims to determine 1) the magnitude of the influence of the learning model on students' mathematical representation abilities and learning motivation; 2) the magnitude of the influence of early mathematical abilities on the ability of mathematical representation and student learning motivation; and 3) the interaction between the learning model and the initial mathematical ability of the mathematical representation ability and student learning motivation. The research was conducted in private SD PAB 10 Sampali with a sample of 2 classes with each class totaling 35 students. This research is a type of experimental research all with a 2 × 2 factorial design. The results showed that there is an effect of the learning model on the students 'mathematical representation ability, where the jigsaw cooperative learning model has a 9.1% higher effect on students' mathematical representation abilities than the expository learning model, there is an effect of initial mathematical ability on students 'mathematical representation abilities, where the high initial mathematical ability of students has an 11.5% higher effect on students' mathematical representation abilities compared to low initial mathematical abilities, there is no interaction between the learning model and the students 'mathematical initial ability to the students' mathematical representation ability.
Environmental Ethics through Value-Based Education
Authors: Moorthy PhD Ravichandran , Akwen Gabriel Tyoyila
Published: September 2020

Environmental ethics is the subject in philosophy that examines the moral relationship of human beings to the environment and its non-human species. It concerns human’s ethical relationship with the natural environment. The central question concerning environmental ethics is essentially – what is human being’s moral obligation concerning the natural environment? The paper will firstly provide a review of the ethical relations of humans and the environment, secondly examine how value-based education can assist in inculcating environmental ethics among learners.
Yksityisen ja julkisen rajanvedon historia
Authors: Ylöstalo Hanna
Published: September 2020

Tehokkuuden toiveuni : uuden julkisjohtamisen historia Suomessa 1970-luvulta 1990-luvulle / Ville Yliaska. Helsinki : Into, 2014.
Mediat ja sivistys mediakasvatuksen näkökulmasta
Authors: Merilampi Ritva-Sini
Published: September 2020

Media määrittää arkeamme ehkä enemmän kuin arvaammekaan. Millaisessa mediamaailmassa liikumme ja kuinka siihen suhtaudumme?
Tutkija liikkeessä
Authors: Pätäri Jenni
Published: September 2020

Sarjassa tutustutaan aikuiskasvatuksen ajankohtaisiin tutkijoihin, tutkimuksiin ja tapahtumiin.
Rescate de la gastronomía típica de los mercados del valle de Tumbaco
Authors: Pérez-Salazar Carlos , Chacón-Jordan Raquel , Toapanta-Cisneros Keyerman
Published: September 2020

El presente artículo consolida la experiencia de los vendedores del área de alimentos y bebidas de los mercados tradicionales del valle de Tumbaco, donde a lo largo del tiempo adquirieron habilidades gastronómicas, ofertando a la sociedad productos con sabores exquisitos y variados. No cabe duda, estos representantes de la ciudadanía están sujetos a factores propios del sector municipal, así como circunstancias sociales que pueden desencadenar en resultados beneficiosos o devastadores llegando afectar de forma directa en el desenvolvimiento de sus procesos productivos. Visto de esta manera, el grupo de investigadores han considerado preservar esta información, compuesta de las versiones emitidas por cada entrevistado, sus conocimientos y preparaciones representativas. Con anterioridad los investigadores debieron recurrir a la verificación de fuentes primarias y secundarias, para posterior enfocarse en la obtención de la información, a través de permisos a los diferentes presidentes y representantes de los mercados del valle, seguido se realizaron entrevistas individuales, para consiguir no solo sus versiones sino también autorizaciones para fotografiar y documentar todo lo relacionado a sus platos representativos. El trabajo diario, así como la constancia juegan un papel fundamental en estas personas, sumado a la falta de preparación, así como decisiones acarreadas por el tiempo sea personales o familiares, motivaron a continuar con este rubro económico por largos años, dando resultados que superaron en algunos casos lo 40 años, realizando las mismas preparaciones gastronómicas en el mismo sector y en los mismos acondicionamientos de infraestructura. Los precios, la convivialidad, la confianza y sobre todo el carisma de cada vendedor hacen notar que estos sectores permanecerán por largos años, esperando a que la sociedad tome importancia de todos los procesos que se generan en estos sectores populares y sobre todo documentar estos aspectos para las generaciones venideras.
Psicología del consumidor y las nuevas tendencias en los medios de comunicación publicitaria
Authors: Villegas-Torres Dayanna , Medina-Paredes Victoria , Abril-Freire María
Published: September 2020

A partir de los primeros registros que se poseen de la civilización, los seres humanos no solo han especulado acerca de la naturaleza, las causas de la mente y el comportamiento, sino que también han empleado su ingenio para someter a pruebas empíricas estas especulaciones. Una vez consolidado el estudio y planteamiento de la psicología, esta se ha propagado en todos los ámbitos, el del marketing no escapa a esta cobertura y es motivo de múltiples estudios como el presente en el que se combina también la incidencia de los medios publicitarios; se planteó como objetivo general investigar la psicología del consumidor y las nuevas tendencias en los medios de comunicación publicitaria; para el efecto, se hizo de uso de forma sistemática de una metodología orientada al estudio bibliográfico y de campo con lo que se obtuvieron resultados que determinan la interrelación entre las variables en estudio y se permitió evidenciar que la influencia actual de medios de comunicación se centra mayormente en medios digitales producto de la sociedad de la información y comunicación en la que vive el mundo actual.
Sintesis Hidrogel Pektin – Gelatin dengan Penambahan Ekstrak Kulit Buah Naga Sebagai Kandidat Pembalut Luka Bakar
Authors: Tarmidzi Fadhil Muhammad , Maharsih Inggit Kresna , Jannah Tina Raihatul , Wahyuni Cici Sari
Published: September 2020

Wound dressing technique currently applies modern wound care methods by maintaining the environmental isolation of the wound in a closed and moist state. There are several types of wound dressing that have been developed, one of them is hydrogel. Hydrogel is sheet-shaped wound dressings which have the ability to absorb exudate and have good stability acidic pH that can be used for the treatment of burns. In this study, hydrogel were made using natural polymers such as pectin and gelatin. The two polymers were combined using crosslinking method with the addition of citric acid as a crosslinking agent. The addition of citric acid has affect on the characteristics of the hydrogel material produced, therefore the right amount is needed to obtain a hydrogel with good mechanical properties. Hydrogel also added by an active substance in the form of flavonoids from dragon fruit peel extract that can be used as a wound dressing to cure burns. This study resulting hydrogel with a concentration of 4% citric acid (Hydrogel CA 4%) produced highest value of swelling, tensile strength, and elongation are 890%, 0.05 Mpa, and 200%, repectively. The mechanical properties of Hydrogel CA 4% was proved by FTIR test that had been carried out, namely the presence of C=O carbonyl group as a result of the esterification reaction that occurred between the polymers and citric acid in the absorption area of 1733.9 cm-1.
Penentuan Pelarut Terbaik pada Ekstraksi Tanin Kulit Kayu Akasia dan Pengaruhnya Sebagai Inhibitor Laju Korosi pada Baja Karbon
Authors: Permanasari Ayu Ratna , Saputra Tri Reksa , Aina Aprillia Nurul’ , Liska Salma
Published: September 2020

Carbon steel in industrial equipment which direct contact with the environment will eventually be corroded. The rate of corrosion could be slowed by organic inhibitors of tannin compounds contained from acacia trees. Tannins were obtained from the extraction process using methanol and ethanol. The aims of this research were to determine the best solvent in the extraction process of acacia bark based on the largest tannin content and to study the effect of tannin as a corrosion inhibitor on carbon steel in the corrosive media through weight reduction methods. The extraction process used maceration at room temperature for two hours with a solid:solvent ratio of 1:10. The solvents were ethanol and methanol. The extract was evaporated in a rotary evaporator at 50 oC, 100 mbar became a paste form. Bark extract was added as an inhibitor in 0.5 M H2SO4 corrosive media; HCl 0.5 M; sea ​​water, and tap water with the addition of inhibitor concentrations of 4%, 6% and 8% (w /v). Immersion was carried out for 12, 24, 36, 48, 60 and 72 hours. Methanol was a better solvent than ethanol with a yield of 4.57% and tannin concentration of 2.768 ppm. Tannin in acacia bark extract is suitable to be used as a corrosion inhibitor in acidic media such as H2SO4 0.5 M and 0.5 M HCl with the highest efficiency gains are 81.20% and 53.06%, respectively.
Engineering and Economic Evaluation of Production of Fe3O4 Nanoparticles
Authors: Harman Asha E. , Nandiyanto Asep Bayu Dani
Published: September 2020

This paper aims to evaluate the economic feasibility of Fe 3 O 4 nanoparticle production from a laboratory scale to an industrial scale feasibility. The evaluation was conducted using 2 models of feasibility studies, namely: technical analysis and economic evaluation. Technical analysis provides information on the potential for large-scale production and the results of this process can be applied using commercially available and inexpensive equipment. Economic evaluation is based on a comparison of the Cumulative Net Present Value graph in an ideal condition and the graph when parameters changing are made (such as changes in the dollar exchange rate, the quantity of sales products, and the value of employee salaries). From the evaluation results, all parameter changes give a positive value indicating that the project is feasible to run commercially and on a large scale. This is because the evaluation results provide a stable index of profit for some changes in parameter values. This study shows that Fe 3 O 4 fabrication can provide promising profits in developing countries and can attract foreign investors to work together on Fe 3 O 4 fabrication.
Penurunan Kadar Lignin pada Fermentasi Limbah Kayu Mahoni Menggunakan Phanerochaete chrysosporium
Authors: Rulianah Sri , Prayitno  , Sindhuwati Christyfani , Ayu Dessi Ria Ambar , Sa’diyah Khalimatus
Published: September 2020

Mahogany wood waste is a type of hard wood agricultural waste containing lignocellulose which is quite high. In mahogany wood waste also contains lignin which is quite high, so the level of lignin must be reduced so that the cellulose can be used as glucose. Phanerochaete chrysosporium is a type of mold that is able to degrade lignin, cellulose and hemicellulose simultaneously. The purpose of this study was to determine the effect of fermentation time and the addition of mahogany wood waste to the reduction of lignin content in the fermentation of mahogany wood waste using Phanerochaete chrysosporium molds. The study was conducted by drying and reducing the size of mahogany wood waste, then fermentation of mahogany wood waste with Phanerochaete chrysosporium with a span of 9, 11, 13, 15, and 17 days, and the addition of mahogany wood waste 5, 6 and 7%. Before and after the fermentation process, lignin levels were analyzed. The best results from this study were obtained at 17 days of fermentation and the addition of 5% mahogany wood powder, obtained a decrease in lignin content of 85,33 %.
RETRACTED: Seven-Gene Signature Based on Glycolysis Is Closely Related to the Prognosis and Tumor Immune Infiltration of Patients With Gastric Cancer
Authors: Yu Shanshan , Hu Chuan , Cai Luya , Du Xuedan , Lin Fan , Yu Qiongjie , Liu Lixiao , Zhang Cheng , Liu Xuan , Li Wenfeng , Zhan Yu
Published: September 2020

Background: Gastric cancer (GC) is one of the most common malignancies worldwide, exhibiting a high morbidity, and mortality. As the various treatment methods for gastric cancer are limited by disadvantages, many efforts to improve the efficacy of these treatments are being taken. Metabolic recombination is an important characteristic of cancer and has gradually caused a recent upsurge in research. However, systematic analysis of the interaction between glycolysis and GC patient prognosis and its potential associations with immune infiltration is lacking but urgently needed.

Methods: We obtained the gene expression data and clinical materials of GC derived from The Cancer Genome Atlas (TCGA) dataset. Univariate and multivariate Cox proportional regression analyses were performed to select the optimal prognosis-related genes for subsequent modeling. We then validated our data in the GEO database and further verified the gene expression using the Oncomine database and PCR experiments. Besides, Gene set variation analysis (GSVA) analysis was employed to further explore the differences in activation status of biological pathways between the high and low risk groups. Furthermore, a nomogram was adopted to predict the individualized survival rate of GC patients. Finally, a violin plot and a TIMMER analysis were performed to analyse the characteristics of immune infiltration in the microenvironment.

Results: A seven-gene signature, including STC1, CLDN9, EFNA3, ZBTB7A, NT5E, NUP50, and CXCR4, was established. Based on this seven-gene signature, the patients in the training set and testing sets could be divided into high-risk and low-risk groups. In addition, a nomogram based on risk and age showed good calibration and moderate discrimination. The results proved that the seven-gene signature had a strong capacity to predict the GC patient prognosis. Collectively, the violin plot and TIMMER analysis demonstrated that an immunosuppressive tumor microenvironment caused by hyperglycolysis led to poor prognosis.

Conclusion: Taken together, these results established a genetic signature for gastric cancer based on glycolysis, which has reference significance for the in-depth study of the metabolic mechanism of gastric cancer and the exploration of new clinical treatment strategies.
A Reliable Auto-Robust Analysis of Blood Smear Images for Classification of Microcytic Hypochromic Anemia Using Gray Level Matrices and Gabor Feature Bank
Authors: Azam Bakht , Ur Rahman Sami , Irfan Muhammad , Awais Muhammad , Alshehri Osama Mohammed , Saif Ahmed , Nahari Mohammed Hassan , Mahnashi Mater H.
Published: September 2020

Accurate blood smear quantification with various blood cell samples is of great clinical importance. The conventional manual process of blood smear quantification is quite time consuming and is prone to errors. Therefore, this paper presents automatic detection of the most frequently occurring condition in human blood—microcytic hyperchromic anemia—which is the cause of various life-threatening diseases. This task has been done with segmentation of blood contents, i.e., Red Blood Cells (RBCs), White Blood Cells (WBCs), and platelets, in the first step. Then, the most influential features like geometric shape descriptors, Gray Level Co-occurrence Matrix (GLCM), Gray Level Run Length Matrix (GLRLM), and Gabor features (mean squared energy and mean amplitude) are extracted from each of the RBCs. To discriminate the cells as hypochromic microcytes among other RBC classes, scanning is done at angles (0∘, 45∘, 90∘, and 135∘). To achieve high-level accuracy, Adaptive Synthetic (AdaSyn) sampling for imbalance learning is used to balance the datasets and locality sensitive discriminant analysis (LSDA) technique is used for feature reduction. Finally, upon using these features, classification of blood cells is done using the multilayer perceptual model and random forest learning algorithms. Performance in terms of accuracy was 96%, which is better than the performance of existing techniques. The final outcome of this work may be useful in the efforts to produce a cost-effective screening scheme that could make inexpensive screening for blood smear analysis available globally, thus providing early detection of these diseases.
On the Application of Entropy Measures with Sliding Window for Intrusion Detection in Automotive In-Vehicle Networks
Authors: Baldini Gianmarco
Published: September 2020

The evolution of modern automobiles to higher levels of connectivity and automatism has also increased the need to focus on the mitigation of potential cybersecurity risks. Researchers have proven in recent years that attacks on in-vehicle networks of automotive vehicles are possible and the research community has investigated various cybersecurity mitigation techniques and intrusion detection systems which can be adopted in the automotive sector. In comparison to conventional intrusion detection systems in large fixed networks and ICT infrastructures in general, in-vehicle systems have limited computing capabilities and other constraints related to data transfer and the management of cryptographic systems. In addition, it is important that attacks are detected in a short time-frame as cybersecurity attacks in vehicles can lead to safety hazards. This paper proposes an approach for intrusion detection of cybersecurity attacks in in-vehicle networks, which takes in consideration the constraints listed above. The approach is based on the application of an information entropy-based method based on a sliding window, which is quite efficient from time point of view, it does not require the implementation of complex cryptographic systems and it still provides a very high detection accuracy. Different entropy measures are used in the evaluation: Shannon Entropy, Renyi Entropy, Sample Entropy, Approximate Entropy, Permutation Entropy, Dispersion and Fuzzy Entropy. This paper evaluates the impact of the different hyperparameters present in the definition of entropy measures on a very large public data set of CAN-bus traffic with millions of CAN-bus messages with four different types of attacks: Denial of Service, Fuzzy Attack and two spoofing attacks related to RPM and Gear information. The sliding window approach in combination with entropy measures can detect attacks in a time-efficient way and with great accuracy for specific choices of the hyperparameters and entropy measures.
Energy Efficiency and Spectral Efficiency Tradeoff in Massive MIMO Multicast Transmission with Statistical CSI
Authors: Jiang Bin , Ren Bowen , Huang Yufei , Chen Tingting , You Li , Wang Wenjin
Published: September 2020

As the core technology of 5G mobile communication systems, massive multi-input multi-output (MIMO) can dramatically enhance the energy efficiency (EE), as well as the spectral efficiency (SE), which meets the requirements of new applications. Meanwhile, physical layer multicast technology has gradually become the focus of next-generation communication technology research due to its capacity to efficiently provide wireless transmission from point to multipoint. The availability of channel state information (CSI), to a large extent, determines the performance of massive MIMO. However, because obtaining the perfect instantaneous CSI in massive MIMO is quite challenging, it is reasonable and practical to design a massive MIMO multicast transmission strategy using statistical CSI. In this paper, in order to optimize the system resource efficiency (RE) to achieve EE-SE balance, the EE-SE trade-offs in the massive MIMO multicast transmission are investigated with statistical CSI. Firstly, we formulate the eigenvectors of the RE optimization multicast covariance matrices of different user terminals in closed form, which illustrates that in the massive MIMO downlink, optimal RE multicast precoding is supposed to be done in the beam domain. On the basis of this viewpoint, the optimal RE precoding design is simplified into a resource efficient power allocation problem. Via invoking the quadratic transform, we propose an iterative power allocation algorithm, which obtains an adjustable and reasonable EE-SE tradeoff. Numerical simulation results reveal the near-optimal performance and the effectiveness of our proposed statistical CSI-assisted RE maximization in massive MIMO.
Toppling Pencils—Macroscopic Randomness from Microscopic Fluctuations
Authors: Dittrich Thomas , Martínez Santiago Peña
Published: September 2020

We construct a microscopic model to study discrete randomness in bistable systems coupled to an environment comprising many degrees of freedom. A quartic double well is bilinearly coupled to a finite number N of harmonic oscillators. Solving the time-reversal invariant Hamiltonian equations of motion numerically, we show that for N=1, the system exhibits a transition with increasing coupling strength from integrable to chaotic motion, following the Kolmogorov-Arnol’d-Moser (KAM) scenario. Raising N to values of the order of 10 and higher, the dynamics crosses over to a quasi-relaxation, approaching either one of the stable equilibria at the two minima of the potential. We corroborate the irreversibility of this relaxation on other characteristic timescales of the system by recording the time dependences of autocorrelation, partial entropy, and the frequency of jumps between the wells as functions of N and other parameters. Preparing the central system in the unstable equilibrium at the top of the barrier and the bath in a random initial state drawn from a Gaussian distribution, symmetric under spatial reflection, we demonstrate that the decision whether to relax into the left or the right well is determined reproducibly by residual asymmetries in the initial positions and momenta of the bath oscillators. This result reconciles the randomness and spontaneous symmetry breaking of the asymptotic state with the conservation of entropy under canonical transformations and the manifest symmetry of potential and initial condition of the bistable system.
Partial Derivative Approach to the Integral Transform for the Function Space in the Banach Algebra
Authors: Young Sik Kim
Published: September 2020

We investigate some relationships among the integral transform, the function space integral and the first variation of the partial derivative approach in the Banach algebra defined on the function space. We prove that the function space integral and the integral transform of the partial derivative in some Banach algebra can be expanded as the limit of a sequence of function space integrals.
Graphene and Lithium-Based Battery Electrodes: A Review of Recent Literature
Authors: Lavagna Luca , Meligrana Giuseppina , Gerbaldi Claudio , Tagliaferro Alberto , Bartoli Mattia
Published: September 2020

Graphene is a new generation material, which finds potential and practical applications in a vast range of research areas. It has unrivalled characteristics, chiefly in terms of electronic conductivity, mechanical robustness and large surface area, which allow the attainment of outstanding performances in the material science field. Some unneglectable issues, such as the high cost of production at high quality and corresponding scarce availability in large amounts necessary for mass scale distribution, slow down graphene widespread utilization; however, in the last decade both basic academic and applied industrial materials research have achieved remarkable breakthroughs thanks to the implementation of graphene and related 1D derivatives. In this work, after briefly recalling the main characteristics of graphene, we present an extensive overview of the most recent advances in the development of the Li-ion battery anodes granted by the use of neat and engineered graphene and related 1D materials. Being far from totally exhaustive, due to the immense scientific production in the field yearly, we chiefly focus here on the role of graphene in materials modification for performance enhancement in both half and full lithium-based cells and give some insights on related promising perspectives.
Minimizing the Standard Deviation of the Thermal Load in the Spent Nuclear Fuel Cask Loading Problem
Authors: Bautista-Valhondo Joaquín , Batet Lluís , Mateo Manuel
Published: September 2020

The paper assumes that, at the end of the operational period of a Spanish nuclear power plant, an Independent Spent Fuel Storage Installation will be used for long-term storage. Spent fuel assemblies are selected and transferred to casks for dry storage, with a series of imposed restrictions (e.g., limiting the thermal load). In this context, we present a variant of the problem of spent nuclear fuel cask loading in one stage (i.e., the fuel is completely transferred from the spent fuel pool to the casks at once), offering a multi-start metaheuristic of three phases. (1) A mixed integer linear programming (MILP-1) model is used to minimize the cost of the casks required. (2) A deterministic algorithm (A1) assigns the spent fuel assemblies to a specific region of a specific cask based on an MILP-1 solution. (3) Starting from the A1 solutions, a local search algorithm (A2) minimizes the standard deviation of the thermal load among casks. Instances with 1200 fuel assemblies (and six intervals for the decay heat) are optimally solved by MILP-1 plus A1 in less than one second. Additionally, A2 gets a Pearson’s coefficient of variation lower than 0.75% in less than 260s CPU (1000 iterations).