bluuebunny/crossref_metadata_2025 huggingface dataset:
Production Process and Quality Testing of Arabica Ground Coffee (Coffee arabica L) Solok Regency, West Sumatera
Authors: Fadri Rince Alfia , Sayuti Kesuma , Nazir Novizar , Suliansyah Irfan
Published: May 2020

One of the types of coffee cultivated in Solok Regency is Arabica Coffee (Coffea Arabica L). The quality of the coffee produced can be influenced by the proper harvesting and post-harvest process so as to produce ground coffee with good quality. This research is done by the method of observation, descriptive, and hedonic test. Ground coffee produced in Solok Regency has a semi-mechanical harvesting process while the post-harvest process begins with the release of the skin and meat of the fruit, subsequent drying, and release of the skin of horns, sorting and grading, roasted, milling and packaging. This research aims to study the processing and quality of Arabica Ground Coffee in Solok Regency.
Effect of Water Absorption on Mechanical Properties of Calotropis Procera Fiber Reinforced Polymer Composites
Authors: M J Raghu , Goud Govardhan
Published: May 2020

The present work investigates the effect of water absorption on mechanical properties of calotropis procera fiber reinforced epoxy polymer composites. The calotropis procera fiber chemical and mechanical testing was done to evaluate chemical composition and strength of the fiber. The composites are fabricated by reinforcing calotropis procera fiber in epoxy matrix by varying the fiber wt. % by traditional hand layup method. The water absorption of calotropis procera reinforced epoxy polymer composites at room temperature was found to increase with increasing fiber loading. The mechanical testing results of moisture exposed composites indicated decreased strength which may be due to degraded bonding between fiber and matrix.
Identification of Tropical Plants Leaves Image Base on Principal Component Analysis
Authors: Laksmana Indra , Hendra Hendra , Novita Sri Aulia , Herdian Fithra , Nurtam Mohamad Riza , Putera Perdana , Syelly Rosda
Published: May 2020

Difference and variation of leaves shape is usually used as primary identifier of the plant species. But some plants may have a similar leaf shape and thus require another more accurate identifier. This study applied principal component analysis (PCA) methods for identifying tropical plant species from the shape of the leaves. This method simplified the observed variables by reducing the dimensions of the information that is stored as much as 75%, so it did not eliminate important information and can save the data processing time. There were 100 images of leaves taken from several sides of the leaf in JPEG format with which the shape of leaves were look similar, like citrus (Citrus aurantifolia), durian (Durio zibethinus), guava (Psidium guajava), mango (Mangifera indica), jackfruit (Artocarpus heterophyllus), avocado (Persea americana), rambutan (Nephelium lappaceum), sapodilla (Manilkara zapota), red betel (Piper crocatum) and soursop (Annona muricata). Identification of those 10 kind plant leaves produced 97% accuracy rate. Measurement systems were designed using the K-fold Cross Validation with k = 10, the results of experiments shown omission error occurs on the leaves of guava, jackfruit and red betel while twice commission error were found on the leaves sapodilla and once on citrus leaves.
浅谈电建企业新业务项目降本增效精细化管理
Authors: 许 连利
Published: May 2020

企业要发展,经济效益是关键。随着国内电力市场的紧缩,电建企业面临着严峻的生存挑战,要想在激烈的竞争中不被淘汰,持续发展,一方面必须要进行转型发展,拓展新业务、新领域,开拓新市场。另一方面就要实行精细化管理,降本增效,提升企业的经济效益,促进企业高质量发展。
针对高速公路内部控制与风险管理现状解析
Authors: 蒋 秋华
Published: May 2020

自改革开放以来,我国的高速公路建设飞速发展,全国高速公路的里程不断增长,公路网逐渐覆盖全国各个城乡地区。对高速公路施工企业而言,科学的内部控制能够有效预防风险发生,是其提升管理水平的内在需求。鉴于此,本文将对高速公路内部控制与风险管理展开探讨。
基于新政府会计制度下行政事业单位固定资产管理研究
Authors: 刘 卫军
Published: May 2020

我国事业单位发展中,固定资产购置金额明显提高,固定资产管理的难度随之增大,同时在管理中也出现了诸多的问题。鉴于此,本文主要分析了基于新政府会计制度下行政事业单位固定资产管理,以供参考。
以价值营销为“策力”核心
Authors: 张 锐 , 丰 晓芳
Published: May 2020

本文对价值营销的内涵进行了简述,并且论述了兰丰环保作为高新技术企业在发展中,如何基于价值营销的视角,做好营销管理的工作。在梳理价值营销基本流程之后,提出增强研发部门与营销部门交流协作、重视产品的可靠性和柔性、合理利用网络营销等措施,希望为相关人士提供参考与借鉴。
治理超限在公路运输经济发展中的作用
Authors: 贾 海军
Published: May 2020

当前,我国公路运输业已取得突破性发展。为了获得更高的经济效益,公路超载和超载问题变得越来越突出。有关交通管理部门也不断加大整治力度。限制的效果不是很明显。本文以治理超支在公路运输经济发展中的作用为主题,希望对我国公路运输经济的超限发挥参考作用。
生态修复在水土保持生态建设中的优化措施
Authors: 范 利杰 , 宋 晓晓
Published: May 2020

在社会经济的快速发展中,我国生态环境污染问题日益严重,毁林开荒等人类活动导致生态环境出现了严重的恶化,造成了水土流失问题。在市场经济体制改革的大背景下,水土资源的重要性不断显现出来,国家越来越重视水土流失问题。为了做好水土保持生态建设,避免出现水土流失问题,管理部门既要注重主体工程建设,还需要考虑各项环保因素,切实落实荒地绿化、封山育林、天然林保护等措施,及时地处理各项水土流失问题。
水利工程施工中围堰技术的应用研究
Authors: 宋 成冉
Published: May 2020

水利工程在新时代发展的推动下也在不断进步,水利工程中的围堰技术也因此受到广泛关注。我国目前的水利工程建设情况需要对建设中涉及到的各项技术进行分析,做好水利工程建设,为人民提供更好的服务。本文研究水利工程施工中围堰技术的应用准则及具体应用,希望对水利工程施工人员起到借鉴作用,为今后的水利工程施工提供更多的参考。
新时期水利工程信息化管理策略论述
Authors: 卡地尔 热依汗古丽 •
Published: May 2020

水利工程作为我国重要的工程项目建设内容,其管理工作的需要不断进行优化和创新。在科学技术高度发展的背景下,通过信息化管理方式开展水利工程管理工作,有效的改善了传统管理模式存在的弊端。基于此,本文主要分析了新时期水利工程信息化管理策略。
如何深化基层水利服务体系建设
Authors: 何 永江
Published: May 2020

当前,我国水利事业快速发展,人们对水利工程也提出了新的要求,为此就应不断加强基层水利服务体系建设的质量,从而更好地满足社会对水利工程的需要。基于此,本文从深化基层水利服务体系建设的关键意义出发,就服务体系建设的具体路径进行了说明,以供参考。
水利工程河道治理存在的问题及管理对策
Authors: 裴 利计
Published: May 2020

随着我国经济的发展和进步,水资源对国家经济发展起着举足轻重的作用,因此要不断完善我国水利工程的基础建设,促进生态水的应用。河道治理工作是水利工程中最重要的一个环节,对河道两旁的生态系统有重要作用,关系到普通人民的用水问题。本文根据我国水利工程中河道治理工作中存在的问题出发,深入的分析了我国现阶段河道治理问题的原因并提出了相应的解决策略与建议,希望能够对以后解决河道治理问题提供思路。
探讨河道岸线及河岸生态保护蓝线划定问题
Authors: 丁 强
Published: May 2020

本文主要针对河道岸线及河岸生态保护蓝线划定问题展开研究,首先提出了河道岸线规划的重要性,其次提出了新疆地区某市岸线蓝线规划现状,基于此分析出岸线蓝线规划的影响因素,最后提出了具有可行性的实施管理对策。
农田水利施工中的水土保持工作的研究
Authors: 王 淑芹
Published: May 2020

农业作为国家的第一产业,对任何国家来说,农业的发展都是保障国家经济稳健发展的基础。缓解水土流失,做好农田水利施工中的水土保持工作是必不可少的。近年来,我国高度重视农田水利工程建设,不断出台和完善相关政策,成效显著,城乡差距已经不断缩小,现代化农业建设稳步推进。文章以水土流失的原因分析与治理方法为切入点,叙述了水土保持工作对农业的重要意义,并为治理工作的具体实施提供借鉴。
基于电力工程中的电力检修及电力施工技术分析
Authors: 赵 根
Published: May 2020

如今,电能在日常生活及工作中的重要性逐渐凸显,但由于电力施工技术的落后,电力检修工作的不及时,使得电力系统运行中存在各种隐患,降低了电能传输效果。为此,本文对电力工程中电力检修及电力施工技术进行分析探讨,以期维护电力系统的安全运行。
浅议水利工程防洪措施
Authors: 荆 文文
Published: May 2020

水利工程是指为了控制、调节和利用自然界的地面水和地下水,以达到除害兴利的目的而兴建的各种工程。水利工程按其服务对象可以分为防洪工程(堤防、水库、蓄滞分洪区、涵闸、排水工程等)、农田水利工程(灌溉工程)、水力发电工程、航运及城市供水、排水工程。文章详细介绍了水利工程的防洪措施。
老挝色拉龙水电站大坝混凝土施工温控技术
Authors: 邓 挺
Published: May 2020

老挝色拉龙水电站大坝为碾压混凝土重力坝。受当地气候影响,气温较高,通过计算对大坝混凝土浇筑施工制定一系列温制措施,以保证大坝混凝土质量。
水利工程档案管理信息化建设的相关分析
Authors: 辛 娅文
Published: May 2020

在社会经济的快速发展中,我国水利工程项目建设规模在不断扩大,信息技术和互联网技术得到了有效应用,水利工程部门需要注重自身综合竞争实力和综合效率的提升,实行信息化档案管理模式。工作人员需要严格按照管理标准、管理要求,合理地开展水利工程档案管理工作,树立信息技术管理理念,根据档案管理目标和原则,制定完善的信息化档案管理制度和管理系统,文章主要分析了水利工程档案管理信息化建设的相关内容。
水利水电工程施工中的新技术应用和环境保护
Authors: 许 文敏
Published: May 2020

近年来在发展经济的过程中,我国强调要践行可持续发展的战略,即要求各行各业在经营与发展的过程中一定要注重保护环境,确保经济发展和环境保护工作同步进行,只有这样才能够创造双赢局面。水利水电工程是一项重要的民生工程,与居民生活密切相关,在施工期间各单位需要合理应用新技术,并且注重环境保护工作,只有这样才能够促进其长远发展。本文主要介绍了水利水电工程施工期间应用的一些新技术,并指出工程施工期间可能引起的环境问题,最终提出了有效的解决措施。
水工环境问题及主要防治对策研究
Authors: 郑 伟
Published: May 2020

水工环是一种较为综合的学科,其中包括水文地质科学、环境地质学科和工程地质学科,是现代地质学中重点研究的学科。近几年我国经济不断发展,对于生态环境的重视程度也在不断增加,在时代发展推动下水工环问题也越来越需要重视,本文主要从水工环地质研究的发展状况做出分析,分析水工环存在的问题,并提出相应的防治措施,希望对相关工作人员起到借鉴作用,同时为实际工作提供有效参考。
刍议堤防工程的防洪评价技术
Authors: 张 博 , 孙 国玉
Published: May 2020

堤防工程安全评估是安全评价的重要内容之一,水利工程,许多部门的保护对象有自己的防洪标准,但在堤坝工程,防洪标准需要统一,保护部门是堤防工程的防洪标准的基础上,需要有一个完整的防护对象的防洪标准计算方法不能包罗万象,标准的制定和应用,有问题保护对象的分类和比较,有很多影响因素在堤坝工程层面的水利行业的现状缺乏相关的技术标准,为了提高堤防工程安全评价工作的可操作性,探讨堤防工程的防洪安全评价基本数据方面的需求,确定设计洪水面线、计算堤顶高程复核、防洪安全评价结论和防洪(潮汐)标准改进区。
农田水利渠道工程施工技术及管理研究
Authors: 阿里木 阿里艳 •
Published: May 2020

农田水利渠道工程建设的目的是提高农田水利灌溉效率,促进农作物的健康生长,提升农业的经济效益。为保证农田水利渠道工程建设质量,掌握完善的施工技术,采取合理的管理措施是非常必要的。本文就将对农田水利渠道工程施工技术及管理进行详细说明,以供借鉴。
生态理念在水利水电设计过程中的应用
Authors: 刘 文凯
Published: May 2020

在我国经济建设脚步逐步加快的过程中,社会发展中水利水电地位也得到了显著提升,在社会进步过程中发挥着不可忽视的重要地位。作为一项和群众生产生活联系密切的工作,水利水电建设工作的开展对于我国经济发展的促进作用更需要受到关注。但是目前我国水利水电建设工程的发展仍然存在很多问题,特别是在工作中产生了很多资源浪费问题,如果不能及时处置这一问题,必然会对我国社会可持续发展工作的贯彻和落实造成负面影响。为此,本文就将对水利水电设计中生态理念的应用情况展开详细研究。
谈中低压配电网规划中的问题及解决措施
Authors: 李 瑞龙
Published: May 2020

从城市建设的实际用电需求出发,就中低压配电网规划中的问题进行科学分析,寻求有效的优化解决措施,以此保障电力系统稳定运行的重要基础。基于此,本文首先分析了中低压配电网规划的关键作用,然后就规划中存在的问题及解决对策进行了详细说明,以供参考。
青年水库土坝填筑施工技术对策
Authors: 赵 克冰
Published: May 2020

水库土坝项目建设的过程中,填筑施工技术是非常基本的施工技术之一,对于整个项目的质量有着非常重要的作用。实际施工中需要施工人员对填筑技术加强关注,施工之前必须细致分析具体施工要求和实际条件,拟定合适的施工方案,按照规定的标准完成施工,全面保证施工质量。水库土坝填筑对于整个工程来说意义重大,实际建设中需要避免偷工减料,保证质量和技术水平,保证工程顺利竣工。本文以青年水库土坝填筑为例,探讨填筑施工技术的应用,希望能够为相关工作者提供一定的参考借鉴。
Análise das propriedades do concreto com variação dos tipos de cimento
Authors: Morais Brunno Borges , Silva Lettycia Pinheiro da , Lima Lívia Ramos , Inácio Raquel Ferreira , Santos Rivaldo Silva , Prado Romenique Almeida , Sousa Welliton Igor Carvalho de
Published: May 2020

O presente trabalho apresenta uma análise qualitativa dos tipos de cimento que estão a disposição no setor construtivo e são comercializadas em diferentes regiões do país, buscando investigar e comparar parâmetros de grande importância para a construção civil. Foi realizada uma pesquisa bibliográfica a respeito dos temas pertinentes ao assunto, tais como concreto, composição do concreto, origem e fabricação do cimento etc. À luz dessa revisão, foi elaborado o estado da arte do tema, abordando várias perspectivas de diferentes autores a respeito da variabilidade das propriedades do concreto, proporcionada pelo tipo de cimento. Com isso, foi possível concluir que este é um campo de pesquisa bastante vasto e importante no ponto de vista da ciência e tecnologia dos materiais, ao passo de que é visível a variação dos resultados de concretos obtidos com diferentes tipos de cimento, o que propicia novos estudos, podendo variar e analisar outros parâmetros importantes como módulo de finura, resistência a outros esforços, entre outros.
Crawling financialization in Central and Eastern Europe using the example of Agriculture
Authors: Agnieszka Franc-Dabrowskaa Justyna
Published: May 2020

The article examines the financialization process in Western and Central and Eastern European countries using the example of agriculture, in particular, agricultural land. The phenomenon discussed is identified as ‘crawling financialization' in Central and Eastern Europe. Countries whose economies underwent a socialpolitical transformation in the 1990s proved to be resistant to the heavy impact of the 2008 financial crisis. Agriculture is one area that should be examined for the phenomenon of financialization, because agricultural land is a desirable investment resource (after exhausting relatively safe opportunities in the financial market), and because investors from capital markets are increasingly moving into commodity markets to speculate on raw materials and agricultural products. Therefore, it is necessary to examine the extent of this phenomenon - whether it's defined as aggressive investment or the crawling financialization of agricultural markets. This paper outlines the determinants of the development of financialization in the food sector, and examines the concept of both ‘galloping' and ‘creeping' financialization and their implications for the agricultural sector, with particular emphasis on agricultural land. Considering the fact that ‘financialization' is a fuzzy concept that is open to interpretation, an attempt was made to concretize it by dividing countries into developed or developing. In addition, attention was paid to the decline in the share of agricultural land in the long-term, and the transfer of investors' free cash from high-risk markets to the agricultural land market. This is prompted by the specific features of land, such as its inconsistency, non-reproducibility, and theoretically also indestructibility.
Determinants of variation of potato prices in the European Union
Authors: Firleja Krzysztof , Kubala Sebastian
Published: May 2020

Prices are considered to be an only, directly observable market parameter, deciding on a degree of implementation of functions of market entities. The variability is inherent to prices, in accordance to an attribute of functioning on competitive market. Examination of factors affecting the prices is particularly significant on account of occurrence of many potential variables which may impact their levels and still increasing market ties among particular economies. Potato is one of the basic agricultural raw materials in the world. Potato is of high economic value, mainly through the universal usability both by manufacturers as well as consumers. The purpose of the article was to determine of variables characterizing strong dependency on evolving level of potato prices in the EU countries. Attempts of building a model aimed at depicting potato prices evolution in the European Union countries under an influence of particular variables was performed using panel data models. Conducted analyses allowed to indicate the occurrence of regional variation of potato prices in particular European Union countries. It was also shown that essential impact on a potato prices level is potato production volume, value of gross domestic product and potato import volumes.
Web platform for "Smart City" data collection and analytics
Authors: Shalamberidze Irakli , Akhobadze Merab
Published: May 2020

The study aims to highlight that nowadays, finding ways to manage the current processes both in the regions and in cities with big agglomeration is the most important and difficult problem. A fortiori, when it concerns developed regions. While designing urban system development, management, and reconstruction projects, both managers of the cities and urbanists must take into account the opinions of specialists, who have different categories of mindsets and they "talk different languages" (Sociologists, ecologists, businessmen, etc.). Summing up the aforementioned languages in a common denominator is possible only by mathematics and computing tools. Nowadays, the problems of city management are united in the concept of "Smart city", which is usually referred to as "informational city". "Smart City" - this is an integration concept, which involves the usage of the so called "integrated imitative model" for systematic, stable, optimal decision making, as the city is a whole dynamic unity. Today's managers of the cities, urbanists, investors, businessmen, sociologists, etc. have to deal with a huge amount of parameters, opinions and data in a nonsystematic manner. Our proposed study "Unified Web Platform of the Region and Smart Management" includes: website, Google Map, pointing object in the map, saving the objects and their parameters, mathematical and programmatic tools, cloud computing, python computing libraries, Restful api as a web service, etc. As for the web service or restful api, any software can have access to the data of the united web platform of the region through a specially defined protocol. Objects presented in the map have assigned specialized and standardized parameters, which are used by the system algorithm for the analyses and the presentation of all the structural creators of the dynamic processes of the city. This gives us the opportunity to see the whole chain of interactions, which are caused by the actions on any object of the city. Users register on the website and they can see the parameters of the objects that are set in the map. The objects in the databases are classified by their purpose, affiliation, destination and other marks. There is an ability for users to define the status of an object on their own. Users can also add or remove objects on the map and can manipulate with the updated parameters on the map. They can evaluate the chain of results both in the time and dimensional manner. For the built-in mathematical tools and algorithms in the system, we use Algebraic topology methods, Graphs theory non-linear differential equations, the theory of disasters and bifurcation, Chaos theory, methods of mathematical statistics and more. Web platform includes all the mathematical tools and programmatic packages that are necessary for stable development of small and medium-sized business.
Metoda beskonačnog spusta i Fermatov posljednji teorem
Authors: Alković Ivona , Bliznac Trebješanin Marija
Published: May 2020

Fermatov posljednji teorem i potraga za njegovim dokazom je poznata i onima koji nisu detaljno proučavali matematiku. U ovom radu ćemo dati kratki uvod u Posljednji teorem i predstaviti konstrukciju Pitagorinih trojki i Fermatovu metodu beskonačnog spusta kojom je dokazao da je teorem istinit za slučaj n = 4, to jest, da diofantska jednadžba x**4+y**4 = z**4 nema rješenja.
Predatory journals : una amenaza real.
Authors: Escobar Espinoza Andres , Martinez Menco Johenis
Published: May 2020

En la última década se ha presentado un fenómeno importante en el mundo de la ciencia que se conoce como predatory publishing el cual se encuentra definido como un modelo de publicación de acceso abierto (Open Access), en el cual los autores deben realizar pagos, pero que no coinciden con el servicio esperado y ofrecido por una revista científica o entidad editora en términos de gestión editorial científica (Beall, 2016; Viniegra, 2012). En este sentido, los manuscritos son publicados sin seguir un procedimiento editorial estándar y sin una revisión o evaluación por pares, que además incluyen condiciones de pago poco claras que anteceden su publicación. De este modo, se desvirtúa el modelo de Acceso Abierto que se financia a través de los denominados Article Processing Charges (APC) que buscan cubrir los costos de la gestión editorial y que se orientan a disponer de manera pública los contenidos publicados, sin la necesidad de suscripciones u otros costos asociados para los potenciales lectores, facilitando así el acceso y la circulación de la ciencia.
PENENTUAN INTERVAL PERAWATAN MESIN AIR SEPARATION PLANT SECARA PREVENTIVE DOWNTIME MAINTENANCE DENGAN MENGGUNAKAN METODE AGE REPLACEMENT PADA PT. XYZ
Authors: Fikri Nidaru Ainul , Widjajati Endang Pudji
Published: May 2020

One way to increase productivity is by reducing downtime on production machine in general, downtime is divided by planned downtime and unplanned downtime. Downtime can be minimized by conducting preventive maintenance. PT. XYZ is a company engaged liquid oksigen, nitrogen and argon manufacturing. In their maintenance system PT. XYZ is still using corrective maintenance method where repair will be conducted if any damage has been occured.

There fore this research is conducted to determine maintenance time interval using age replacement method. This research subject is air sparation plant consists of filter unit, recycle nitrogen compressor unit, and argon purification unit.

Based on the analysis of the results obtained, it is known that with the age replacement method the optimal component replacement time interval for the Argon Purification Unit component is 32,400 minutes, and the Recycle Nitrogen Compressor Unit is 31,500 minutes. with total annual maintenance costs of Rp. 449,921,405. Compared to the cost of maintenance in companies that have a value of Rp 3,115,210,778, the treatment system using the age replacement method is more efficient at 69,23%.
PENGENDALIAN DAN PERENCANAAN PERSEDIAAN BAHAN BAKU CASTABLE LC 16 DENGAN METODE PERIODIC REVIEW DAN CONTINOUS REVIEW DI PT. XYZ SURABAYA
Authors: Rahayu Kurnia Ela , Safirin Mochamad Tutuk
Published: May 2020

XYZ adalah salah satu Perusahaan manufaktur yang memproduksi produk tahan. Salah satu produk yang diproduksi adalah Castable. Di Perusahaan ini terjadi overstock dan stockout pada bahan baku utama Castable yaitu Bauxite Halus, Bauxite Sedang, dan Bauxite Kasar. Overstock dan stockout ini mengakibatkan biaya persediaan menjadi tinggi. Penelitian ini bertujuan untuk melakukan pengendalian dan perencanaan persediaan bahan baku Castable LC 16 sehingga dapat meminimasi total biaya persediaan menggunakan metode Periodic Review dan Continous Review. Kesimpulan dari penelitian didapatkan total biaya persediaan terkecil menggunakan metode Continous Review yaitu sebesar Rp 1.427.292.224,- dan total biaya persediaan metode Perusahaan sebesar Rp 1.457.452.920, sehingga memberikan penghematan sebesar 1,31%.
DESAIN EKSPERIMEN PENGARUH VARIASI MEDIA PENDINGIN TERHADAP KEKERASAN DAN KEKUATAN TARIK BAHAN ST 41 PADA PROSES HEAT TREATMENT
Authors: Ayu V Fransisca Diah , Sumiati Sumiati
Published: May 2020

Baja ST 41 merupakan baja yang tergolong sebagai baja karbon rendah dengan kom-posisi paduan 0,37-0,43%C, 0,5-0,35%Si, 0,60-0,90%Mn. Baja tersebut terkadang memiliki karakter yang tidak sesuai dengan kebutuhan yang diperlukan, sehingga perlu adanya perla-kuan lain untuk merubah sifat dan struktur dari baja ST 41 itu sendiri. Karakteristik baja dapat diubah dengan metode perlakuan panas atau heat treatment, salah satu cara adalah dengan menggunakan metode quenching. Quenching dengan media pendingin tertentu dapat mempengaruhi sifat kekerasan baja ST 41 tersebut. Proses Pemanasan (Normalizing) pada penelitian ini menggunakan suhu 723oC dengan penahanan suhu selama satu jam. Kemudian didinginkan (Quenching) secara cepat dengan berbagai media pendingin. Media pendingin yang digunakan dalam penelitian ini adalah air, air garam, minyak kelapa, dan oli, dengan menggunakan holding time pada masing-masing media pendingin yaitu 5 menit sampai 20 menit.  Setelah dilakukan proses quenching, baja ST 41 dilakukan uji kekerasan dan Uji Kekuatan Tarik menggunakan metode uji Rockwell dan di analisis Hasil penelitian ini juga merekomendasikan sebuah persamaan umum untuk memprediksi kekerasan bahan ST 41 apabila menggunakan dua komposisi tersebut, yaitu: Y= 97,2118+0,0983*x-0,4223*y 0,0114*x*x+0,0026*x*y+0,0023 *y*y. Dan Hasil penelitian ini juga merekomendasikan sebuah persamaan umum untuk mempred-iksi kekuatan Tarik bahan ST 41 apabila menggunakan dua komposisi tersebut, yaitu  Y = 46,7828+0,3293*x+0,2271*y-0,0132*x*x-1,1689E-14*x*y-0,0009*y*y. Dengan x1 dan x2 mas-ing-masing adalah waktu penahanan dan suhu.

                               

Kata Kunci: Baja ST 41, Holding time, kekerasan dan kekuatan tarik bahan. media Pendingin, suhu.Weights.
ANALISIS KESEIMBANGAN LINTASAN MENGGUNAKAN METODE LARGEST CANDIDATE RULE, KILLBRIDGE AND WESTERN METHOD, RANKED POSITIONAL WEIGHTS
Authors: Haq Helmi Syaiful , Pulansari Farida , Suryadi Akmal
Published: May 2020

UD. KS PRO merupakan salah satu perusahaan yang bergerak dalam bidang produksi spare part otomotif, aksesoris sepeda motor dan juga alat bantu pertanian. UD. KS PRO memiliki lini proses yang memproduksi standar paddock untuk sepeda motor tipe sport. Pada lini produksi paddock sering terjadi bottleneck pada proses pengerolan pipa dan proses pengecatan sehingga mengakibatkan ada beberapa work station yang mengalami idle time yang signifikan dalam se-tiap proses produksi yang dilakukan. Metode yang digunakan dalam menyelesaikan masalah ini adalah Largest Candidate Rule, Killbridge and Western Method, dan Ranked Positional Weights sebagai metode pembanding. Dengan menghasilkan metode yang paling optimal adalah metode Largest Candidate Rule yang menghasilkan line efficiency 85,04%, balance delay sebesar 19,94%, dan smoothnes index 1,8239 dengan jumlah operator sebanyak 6 orang. Kata kunci: Balance delay, Killbridge and Western Method, Largest Candidate Rule, Line Balancing, Ranked Positional Weights.
ANALISIS PENGARUH MARKETING MIX 7P TERHADAP KEPUTUSAN PEMBELIAN PRODUK AQUARIUM DENGAN METODE SEM DI PT. NISSO BAHARI SURABAYA
Authors: Pratama Rendi Andika , Waluyo Minto
Published: May 2020

Pemasaran dalam sebuah perusahaan merupakan factor penting dalam mengenalkan dan menjual suatu produk atau jasa. Tetapi sebenarnya dalam dunia pemasaran, bukan hanya itu saja fungsinya. Karena pemasaran merupakan ilmu global yang mencakup banyak aspek dalam duinia bisnis. Selain untuk mengenalkan dan menjual produk atau jasa, pemasaran juga memiliki fungsi dapat memenuhi dan memuasakan kebutuhan konsumen serta mampu memberikan laba maksimum bagi perusahaan. PT. Nisso Bahari Surabaya merupakan salah satu perusahaan manufaktur di Indonesia yang di mana perusahaan ini adalah penghasil produk di bidang properti yaitu aquarium. Karena perusahaan ini tergolong masih baru banyak sekali hal yang harus di perbaiki atau bahkan di kembangkan,kususnya di bidang marketingnya agar bisa mendapatkan omset yang maksimal. Untuk itu,dibutuhkan model pengukuran yang dapat digunakan sebagai pedoman dalam mempertahankan dan meningkatkan penjualan produk seperti yang harapkan perusahaan.Dengan menggukan 4 variabel yaitu Marketing Mix 7P,Keputusan pembelian,Kepuasan konsumen,dan Loyalitas. Tujuan penelitian ini adalah untuk mengetahui pengaruh signifikansi marketing mix 7p terhadap keputusan pembelian, mengetahui pengaruh keputusan pembelian terhadap kepuasan konsumen, dan mengetahui pengaruh kepuasan konsumen terhadap loyalitas kosumen PT. Nisso Bahari Surabaya. Berdasarkan hasil penelitian didapatkan variable Marketing Mix (X) memiliki pengaruh yang signifikan terhadap keputusan pembelian (Y1) dengan nilai C.R sebesar 5,188 > t-tabel 1,713 dan nilai regresi sebesar 0,738. Variabel Keputusan pembelian (Y1) terhadap Kepuasan Pelanggan (Y2) dalam penelitian ini menunjukkan hubungan yang positif dan signifikan dengan nilai C.R sebesar 4,329 > t-tabel 1,713 dan nilai regresi sebesar 1,171. Variabel Kepuasan konsumen (Y2) belum memiliki hubungan yang positif dan signifikan terhadap Loyalitas (Y3) dengan nilai C.R sebesar 1,448 > t-tabel 1,713 dan nilai regresi sebesar 0,121.
Thwarting Ethnoviolence Against Muslim Women: Performing Identity in Social Action
Authors: Conwill William L. , Jooma Khairunnissa
Published: May 2020

This is a case study of campus-based activist research on multicultural diversity and tolerance in a college town in the Southeast after the destruction of the World Trade Center (WTC) towers to decrease the post-9/11 hostility against Muslims, particularly women. As part of a Community Mental Health Consultation project at the University of Tennessee, the first author, a professor, assigned the second author, a foreign-born Muslim woman graduate student, to recruit and organize several Muslim women students from the Muslim Students Association. The students, performing their identity as Muslim women, conducted community workshops on Islam to promote knowledge and awareness of religious differences, and ethnic diversity and tolerance; and to reduce hostility against the Muslim community. This article includes web links to videos of their first workshop. We describe in detail the students collaborative intervention to address threats of gendered ethnoviolence as social action. A number of positive outcomes accompanied their empowering intervention, including the institution of the Ramadan Fast-a-Thon, now celebrated nationally at more than 230 colleges and universities. We conclude with implications for counseling and psychology for such collaborative intentional action in community interventions, given the harsh polarization around religious and cultural issues we struggle with today.
“I Feel Like We’re Going Backwards:” Post-Presidential Election Resilience in Latinx Community Members
Authors: Morgan Consoli Melissa L. , Consoli Andrés J. , Hufana Alyssa , Sanchez Adriana , Unzueta Emily , Flores Iliana , Vázquez María D. , Sheltzer Joshua M. , Casas J. Manuel
Published: May 2020

The 2016 U.S. presidential election brought many reactions on a global scale. World leaders, national leaders, and everyday citizens experienced intense emotions on varying levels. Latinx communities in the U.S., specifically, were impacted significantly, with rhetoric about immigration and issues regarding border security (i.e., build a wall). While much about these sentiments have been reported at the journalistic level, little has been published at the research level to date: specifically, how Latinx community members reacted on an individual level, how they confronted concerns related to fear and adversities (i.e., their resilience), and what the impact may be for their future. The current study employs a community-based, qualitative approach that involved conducting semi-structured focus groups with self-identified Latinx community members in a U.S., West Coast town. Participants were asked about their emotions and reactions, as well as plans regarding the results of the election. Emergent themes included three broad categories: (1) perspectives on the outcome of the 2016 U.S. presidential election; (2) observed impacts of the U.S. presidential election, and (3) ways of dealing with the election results. Sub and tertiary thematic categories were also identified.
Safer Spaces of Decolonize/Occupy Oakland: Some Reflections on Mental Health and Anti-Oppression Work in Revolutionary Times.
Authors: Newman Erica
Published: May 2020

Since its inception in October, the eruption of the Decolonize/Occupy1 movement in Oakland, California has been swift and powerful. Safer Spaces2 is a volunteer-run committee that was formed at the inception of Decolonize/Occupy Oakland to provide anti-oppression advocacy and mental and emotional wellness support to participants of the movement. We were created quickly, creatively, and with little lived experience of a movement this powerful to draw on for guidance. This is an overview of the work we have been doing, and a brief reflection on my experiences of our collective as we have worked to serve the movement.
Child Maltreatment and the Advocacy Role of Professional School Counselors
Authors: Barrett Kathleen Marie , Lester Susan V. , Durham Judith C.
Published: May 2020

Recent focus in counseling has been on the expansion of advocacy to disadvantaged and marginalized populations. Utilizing advocacy dispositions and competencies, this article details the school counselor's role in working with maltreated children. Examples are cited for advocacy work at the individual child, school, and broader social levels.
Reflections on the First Decade of the Journal for Social Action in Counseling and Psychology
Authors: Toporek Rebecca , Sloan Tod
Published: May 2020

The founding editors reflect on the first decade of the Journal for Social Action in Counseling and Psychology (JSACP) including the impetus for the journal, their personal journeys and motivations, as well as the aspirations articulated in the formation and first issue of JSACP. They highlight a number of articles published throughout the first decade of the journal, commenting on the contributions made by each article.
DREAMzone: Educating Counselors and Human Service Professionals Working with Undocumented Students
Authors: Cisneros Jesus , Lopez Anna
Published: May 2020

This article discusses the development and implementation of DREAMzone, an educational intervention designed to provide counselors and other human service professionals with awareness, knowledge, and skills for working with undocumented students. DREAMzone is driven by four learning objectives: (a) identify and deconstruct preconceptions of undocumented immigrants; (b) increase knowledge about laws and policies affecting the experiences of undocumented students; (c) engage in direct contact with undocumented students; and (d) acquire skills, practices, and resources for working with undocumented students. Program reflections are provided, including future directions for effectuating a systems level transformation within higher education.
Toward a Ripple Effect: Psychologists Collaborate in Social Justice Education at a High School
Authors: Kim Grace S. , Kahn Vali D. , Tawa John , Suyemoto Karen L.
Published: May 2020

Social justice education aims to develop critical thinking about social inequities and social responsibility to increase civic engagement in high school youth. While high schools increasingly recognize the importance of social justice education, teachers are often initially under-prepared to teach this material, particularly about managing challenging emotions, and working with a group- processes as students work with social justice content and process. Psychologists are often asked to be diversity consultants or instructors, creating opportunities to contribute to social justice education. Drawing from implementation science, this paper describes a model of collaboration between university-based psychologists and high-school educators in providing a social justice course to high school students. Our education model enabled a multi-layered collaborative network that maximized the contributions of collaborators (i.e., Students, High School Teachers, Consultants, and Mentor) and enabled sustainability within the high school.
The Effects of Plaster Thicknesses on Cyclic Behavior of Infill Walls with Different Materials
Authors: Arslan Mehmet Emin , Ağcakoca Elif , Şentürk Merve
Published: May 2020

Reinforced concrete structure systems are usually designed as frame or shear wall-frame systems. It is possible to reduce the deformation and displacement in the system by increasing the structural stiffness. Besides, large displacements on the floors caused by horizontal load are damped by the cracks in these walls. The present paper aims to examine the effects of materials used in the wall construction as well as thickness of the plaster on the behavior of infill walls under cyclic loads. In order to investigate the above mentioned effects, three Infill walls that were produced from three different materials namely, horizontal hollow bricks, pumice blocks and aerated concrete blocks were tested in three setups (without plaster, with 1 cm plaster and 2.5 cm plaster on it). In order to determine pure wall contribution, the infill walls were placed in a steel frame test set-up which was hinged from all four corners and were then exposed to cyclic loads taking into account the displacement controlled loading protocol proposed in FEMA 461. Right after applying the plaster to the infill walls, load carrying and energy dissipation capacities of the walls were examined comparatively. Load-displacement, backbone curve and cumulative dissipated energy curves of each infill walls are generated using the data collected from the experiments and the infill walls behaviors are graphically explained. Test results showed that existence and thickness of plaster significantly affected cyclic behavior of the test walls by increasing energy dissipation capacities and load carrying capacities.
Ece Temelkuran (2019). How to Lose a Country: The Seven Steps from Democracy to Dictatorship (Bir Ülke Nasıl Kaybedilir: Demokrasiden Diktatörlüğe Giden Yedi Basamak)
Authors: Yılmaz Şener Meltem
Published: May 2020

Ece Temelkuran (2019). How to Lose a Country: The Seven Steps from Democracy to Dictatorship (Bir Ülke Nasıl Kaybedilir: Demokrasiden Diktatörlüğe Giden Yedi Basamak). Londra: 4th Estate Yayıncılık, 282 sayfa, ISBN: 978-0-00-829404-5.
Ahlaki Değerlerin “Devlet Sınırları” ve “Göçmen İşçilerin Üyelik Statüsü” Anlamları Üzerine Etkisi
Authors: Sönmez Efe Süreyya
Published: May 2020

Bu makale, ahlaki değerlerin bölgesel sınırlar ve göçmen işçilerin üyelik statüsü kavramlarının anlamı üzerindeki etkisini ahlaki yapılandırmacı yaklaşım merceğinden incelemektedir. Paylaşılan değerlerin, devletlerin göç politikaları ve kanun yapma süreçlerinin merkezinde yer aldığını önermektedir. Devletler, sadece kolektif bir varlık haline gelen rastgele bir topluluk değil, ortak değerleri olan bireylerden oluşan değer topluluklarıdır. Göçmen işçilerin statüsü, 'değer topluluğuna' üyelikleriyle belirlenir; tartışılabilir bir şekilde, yasal terminolojiyi devlet düzeyinde biçimlendirmek için "geçirgen değerler" ve / veya "geçirimsiz değerler" kullanan kişilerden oluşuyor. Bu makalede, sosyal olarak yapılandırılmış değerlerin devlet politikalarını etkilediği, devlet sınırlarını ve göçmen işçilerin üyelik statülerini tanımladığı sonucuna varılan göç politikasının analizi için Türkiye vaka incelemesine odaklanılmaktadır. Analiz için, Türkiye'de toplanmış görüşmelerden ve katılımcı gözlemlerinden elde edilen birincil veriler ve yasal resmi belgelerdeki ikincil veriler kullanılmıştır.
ABSTRACT IN ENGLISH
The Impact of Moral Values on the Meaning of the Borders and the Membership Status of Migrant Workers
This paper analyses the impact of moral values on the meaning of the concept of territorial borders and the membership status of migrant workers through the lens of the moral constructivist approach. It suggests that shared values sit at the core of the states’ migration policies and law-making processes. States are not merely random collections of people that become a collective being but are communities of value that are consist of individuals who have shared values. Migrant workers’ status is determined by their membership to ‘community of value’ which arguably comprise of persons who use ‘porous values’ and/or ‘impermeable values’ to shape the legal terminology at the state level. The paper focuses on the case study of Turkey for the analysis of migration policy which concludes that socially constructed values influence the state policies and define borders and membership status of migrant workers. For the analysis, it uses primary data from interviews and participant observation; and secondary data from official legal documents collected in Turkey.
Hüseyin Mirza Karagöz (2019). Türkiye’de Alevilik: Toplumsal Çatışmalar ve Göç Modellerine Bakış
Authors: Araz Mustafa Saygın
Published: May 2020

Hüseyin Mirza Karagöz (2019). Türkiye’de Alevilik: Toplumsal Çatışmalar ve Göç Modellerine Bakış, İstanbul: Ozan Yayıncılık, 109 sayfa, ISBN: 9786057569196
Medicines Used in Emergency
Authors: Indra Imai , Adhiany Eka
Published: May 2020

The aims of the study is to find the emergency medicines. The result Ine Epinephrine is a sympathomimetic, adrenergic group. Epinephrine effects can be seen in: Cardiovascular secondary hypotension, reversal epinephrine), gastrointestinal, uterine, bladder, respiratory, CNS, eye and metabolic processes. Clinical use can be seen in: Cardiovascular hypotension secondary, reversal epinephrine), gastrointestinal tract, uterus, bladder, breathing, CNS, eyes and metabolic processes. Stimulate the heart in patients with cardiac arrest and stop capillary bleeding. Ephedrine is a sympathomimetic, adrenergic class of drugs. The pharmacodynamics effect of ephedrine resembles the effect of epinephrine, the difference is that ephedrine is not a catecholamine, it is effective in oral administration, the duration of action is much longer, the central effect is stronger, but a much larger dose of epinephrine is needed, the difference being that ephedrine is not a catecholamine, it is effective in oral administration, its duration is much longer, the central effect is stronger, but a much greater dose is needed than the epinephrine dose. Like epinephrine, ephedrine acts on α, β1 and β2 receptors. The ephedrine cardiovascular effect resembles the effect of epi but lasts about 10 times longer.
E-Learning for Educators in Digital Era 4.0
Authors: Sagita Mustakim , Khairunnisa Khairunnisa
Published: May 2020

In this Industrial 4.0 revolution era, technological advances become things that cannot be solved in human life. Teachers must learn better in learning, need to utilize optimal learning resources, this is important, because the effectiveness of learning is also included by the willingness and ability to utilize learning media, such as the web (google class). In this era students are required to have certain skills, besides those educators are also required to have several competencies that must be possessed so that the e-learning program that they run can run well. An educator or teacher must be able to learn to be there to learn, be creative and fun.
Obstacle Factors on Evidence System of Urine Test Result on Drugs Cases in National Narcotics Board of North Sumatera Province, Indonesia
Authors: Zulyadi Rizkan
Published: May 2020

This study aims to discuss what factors inhibit the system of proving the results of urine test narcotics cases in the National Narcotics Agency of North Sumatra Province. the system of proving urine test results in narcotics cases in the National Narcotics Agency of North Sumatra Province that the opinion of Dr. Romi as a medical team at BNN said the function of the urine test is to determine whether or not someone has used narcotics because in the urine it will be known whether there is a narcotic content or not that can only be known for 1-7 days after use and urine tests are carried out with aids in the form of stick test. Provide counseling about Narcotics and the presence of BNN in North Sumatra Province in educational institutions. Provide counseling about Narcotics and the presence of BNN in each region in the Province of North Sumatra as a research location. Establish cooperation with parties both public and private to provide counseling in each institution.
Sustainability of Communication, Organizational Culture, Cooperation, Trust and Leadership Style for Lecturer Commitments in Higher Education
Authors: Syakur Abd. , Susilo Tri Achmad Budi , Wike Wike , Ahmadi Rulam
Published: May 2020

This reserach was focused and related to effect of sustainability communication, bureaucracy structure and public support which have significant effect toward policy implementation performance and to execute Three Dharma (education, research and comunity service) in higher education. Communication, resources, bureaucracy structure and public support has its influence against disposition. In bureaucracy structure, public support has significant effect toward its main resources which is lecturer or its teaching staff. This study aimed to analyze the effect of communication and organizational culture toward leadership style, cooperation and trust also organizational commitment of lecturer in higher education viewed from its harmonization in executing three laws. Structural equation modeling (SEM) was used to analyze causality relation between variables. This study used survey method. Population in this study was lecturers in higher education. The total sample was determined 100 respondents from elevens Institution in higher education. Result of this study showed direct and positive significant effect of communication and organizational culture toward leadership style and cooperation also trust and organizational commitment of lecturers in higher education. There was no direct and positive significant effect of communication toward organizational culture. There was direct and positive significant effect toward cooperation and organizational commitment of lecturers to Institutions in higher education. There was direct and positive significant effect of work trust toward organizational commitment.
PENGEMBANGAN MEDIA PEMBELAJARAN BERBASIS MULTIMEDIA INTERAKTIF MENGGUNAKAN MACROMEDIA DIRECTOR PADA MATERI USAHA DAN ENERGI KELAS X
Authors: Melianti Erina , Risdianto Eko , Swistoro Eko
Published: May 2020

ABSTRAK Penelitian ini bertujuan untuk (1) menghasilkan media pembelajaran berbasis multimedia interaktif menggunakan Macromedia Director pada materi usaha dan energi kelas X, (2) mendeskripsikan kelayakan pengembangan media pembelajaran berbasis multimedia interaktif menggunakan Macromedia Director pada materi usaha dan energi kelas X. Jenis penelitian ini adalah Research and Development (R&D) level 1 yang dilaksanakan dalam lima tahap yaitu potensi dan masalah, studi literatur dan pengumpulan informasi, desain produk, validasi desain, dan desain teruji. Validasi desain menggunakan angket dan dilakukan oleh ahli. Hasil penelitian menunjukkan bahwa telah dihasilkan media pembelajaran berbasis multimedia interaktif yang berada dalam katergori sangat valid yaitu didapatkan penilaian pada aspek materi dengan presentase 89,58% dinyatakan pada tingkat yang valid, kemudian pada aspek media dengan presentase 84,37% dinyatakan pada tingkat yang valid, dan aspek bahasa dengan presentase 93,33% dinyatakan pada tingkat yang valid. Sehingga didapat bahwa media pembelajaran berbasis multimedia interaktif menggunakan Macromedia Director pada materi usaha dan energi kelas X dikategorikan valid dengan nilai rata-rata 89%.Kata Kunci: Macromedia Director, Multimedia Interaktif, Penelitian Pengembangan ABSTRACT This research was aimed to (1) produce learning media based on interactive multimedia that using macromedia Director on business and energy material at the grade X, (2) describe properness of developing interactive based multimedia learning that using macromedia director in effort and energy material of tenth grade. The type of this research was level 1 of research and development (R&D) was done in five stages namely, potential and problems, literature study and information gathering, product design, design validation, and proven design. Design validation used questionnaires for expert. The result of this research showed that learning media based on interactive multimedia was categoried in valid category for material aspect assessment in percentage 89,58% and then on the media aspect in 84,37% was categoried in valid level, dan language aspect in percentage 93,33% was categoried in valid level. So that it was found that interactive multimedia based learning media using Macromedia Director on business material and energy class X was categorized as valid with an average value of 89%.Keywords: Macromedia Director, Interactive Mutimedia, Research and Development
PENGEMBANGAN DESAIN BAHAN AJAR FISIKA BERBASIS E-MODUL PADA MATERI MOMENTUM
Authors: Shobrina Nadah Qolbi , Sakti Indra , Purwanto Andik
Published: May 2020

ABSTRAK Penelitian ini bertujuan untuk mengembangkan bahan ajar fisika berbasis E-Modul. Penelitian ini merupakan penelitian pengembangan yang dilaksanakan dalam lima tahapyaitu potensi dan masalah, studi literatur dan pengumpulan informasi, desain produk, validasi desain, dan desain teruji. Sampel atau sumber data penelitian ini yaitu guru fisika dan siswa SMAN 2 Kota Bengkulu kelas X MIPA D. Instrumen yang digunakan dalam penelitian ini yaitu lembar observasi, lembar angket guru dan siswa, lembar angket uji validasi tim ahli. Hasil penelitian menunjukkan bahwa bahan ajar fisika berbasis e-Modul yang dikembangkan termasuk dalam kategori valid dan merupakan desain teruji karena mendapatkan respon positif dengan persentase total uji validitas yaitu 80,6% dan serta memiliki reliabilitas tinggi pada validitas aspek isi dan penyajian dengan nilai koefisien sebesar 0,9 dan  0,88, aspek bahasa nilai koefisien 0,79 dengan kategori sangat tinggi, dan reliabilitas aspek media 0,91 dengan kategori sangat tinggi.Berdasarkanpenelitian pengembangan dan pembahasanyang dilakukan,didapatlahdesainbahanajarfisikaberbasise-modul padamateri momentumdi SMAN 2 KotaBengkuluyangvalid dan reliable. Kata Kunci: Bahan Ajar Fisika, E-Modul, Momentum, Penelitian pengembangan.ABSTRACT This research aimed to develop physics teaching materials based on E-module. This research was is a development research conducted in five stages, namely potention and problem, literature study and information gathering, product design, design validation, and tested design .The sample or data source of this research were the Physic Teacher and Student of SMAN 2 Bengkulu, class of X MIPA D. The instruments used in this research are observation sheet, teacher and student questionnaire, test questionnaire of expert team validation test. The results showed that the e-module based physics teaching materials developed included in the category good validity and as a tested design for getting a positive response with the percentage of total validity test is 80.6% and also had reliability on the content aspect and served with coefficient value equal 0.9 and 0.88, the coefficient value language aspect 0.79 with category very high reliability and reliability media aspect 0,88 with category very high. Based onresearchdevelopmentanddiscussionconducted,resulting ofe-modulematerial design on momentum material at SMAN 2 Bengkuluwas valid and reliable.Keywords: Physics Teaching Material, E-module,Momentum, Research development