bluuebunny/crossref_metadata_2025_split huggingface dataset:
Experimental exploration of a mixed helium/carbon beam for online treatment monitoring in carbon ion beam therapy
Authors: Volz L , Kelleter L , Brons S , Burigo L , Graeff C , Niebuhr N I , Radogna R , Scheloske S , Schömers C , Jolly S , Seco J 
Published: January 2020

Abstract
Recently, it has been proposed that a mixed helium/carbon beam could be used for online monitoring in carbon ion beam therapy. Fully stripped, the two ion species exhibit approximately the same mass/charge ratio and hence could potentially be accelerated simultaneously in a synchrotron to the same energy per nucleon. At the same energy per nucleon, helium ions have about three times the range of carbon ions, which could allow for simultaneous use of the carbon ion beam for treatment and the helium ion beam for imaging. In this work, measurements and simulations of PMMA phantoms as well as anthropomorphic phantoms irradiated sequentially with a helium ion and a carbon ion beam at equal energy per nucleon are presented. The range of the primary helium ion beam and the fragment tail of the carbon ion beam exiting the phantoms were detected using a novel range telescope made of thin plastic scintillator sheets read out by a flat-panel CMOS sensor. A 10:1 carbon to helium mixing ratio is used, generating a helium signal well above the carbon fragment background while adding little to the dose delivered to the patient. The range modulation of a narrow air gap of 1 mm thickness in the PMMA phantom that affects less than a quarter of the particles in a pencil beam were detected, demonstrating the achievable relative sensitivity of the presented method. Using two anthropomorphic pelvis phantoms it is shown that small rotations of the phantom as well as simulated bowel gas movements cause detectable changes in the helium/carbon beam exiting the phantom. The future prospects and limitations of the helium/carbon mixing as well as its technical feasibility are discussed.
Dynamic analysis and modeling of three-dimensional crane incorporating payload
Authors: Khairudin M 
Published: January 2020

Abstract
This study developed the efficient dynamic models and system dynamics analysis on three-dimensional (3D) crane with a default load. The direction of movement that will be discussed in the 3D crane system is the simultaneous movement on the X axis, up and down in the direction of the Y axis and simultaneously moving in the direction of the Z axis. The dynamic equation of movement of the 3D crane system uses the Lagrange method and nonlinear differential equations. System dynamics analysis was performed using Matlab/Simulink to observe dynamic behaviour in the 3D crane system in the time domain and frequency domain. The response of the 3D crane system includes rail position, trolley and default load response, and default load swing angle. The results showed for the swing angle, α showed a swing angle that was significant at ± 0.09 rad, while the swing angle, β shows a significant angle at ± 0.07 rad. The system oscillates at ± 0.009 rad.
Developing blog-based learning media for basic mechanical engineering subjects
Authors: Sancoko R T , Nurhadiyanto D 
Published: January 2020

Abstract
This research aims to develop a blog as learning media, analyse the instrument of feasibility test for the blog, and examine the students’ and teachers’ responses to the developing learning media used in basic mechanical engineering subject conducted in vocational high schools of PIRI Sleman and PIRI 1 Yogyakarta. This research employed the research and development method. The data of this study were collected using questionnaires. The results of the study show that this study develops learning media in the form of a blog consisting of six necessary competences of Basic Mechanical Engineering and a website namely https://pdtmsmk.blogspot.com which can be accessed through a gadget anytime and anywhere. In addition, the researchers conduct the feasibility test is readily used and the media go through field tests, and from the tests, a very high score is obtained and that is the blog is feasible.
Industrial work culture in vocational learning: a relevance to occupational world
Authors: Wahyudi  , Widarto  , Wibowo A E 
Published: January 2020

Abstract
The industrial work culture (IWC), especially in the manufacturing industry, is very complex and has the potential to be explored for continuous improvement in vocational learning. This study aimed to measure the level of IWC implementation in manufacturing industries and in the Diploma-III of Mechanical Engineering of Engineering Faculty of Yogyakarta State University (D-III ME YSU) and measure the relevance of IWC implementation in ME D-III YSU to IWC implementation in the manufacturing industry. This study used the survey method. The population consisted of two parts, the first was the D-III students, and the second were the manufacturing industry in DIY, Central Java, and Jakarta province. The subjects of this study were staff of industrial employees. The sample determined by purposive sampling technique. The study results showed that the IWC implementation level in industries as a whole included in the “high” category with an achievement score of 82% and IWC implementation level in D-III ME YSU included in the “high” category with an achievement score of 80%. In addition, the relevance of IWC implementation in D-III ME YSU to IWC implementation in the industries as a whole reached 97% “high”.
Industrial working culture in learning practice at vocational high school
Authors: Sukardi T , Fitrah A , Syauqi K , Paryanto  
Published: January 2020

Abstract
The purpose of this study was to study the application of working culture to the learning practice of machining in vocational high school (VHS) Muhammadiyah 1 Salam. The industrial working culture adds value to integrity, professional, productive, innovative, and competitive. This research is a quantitative and qualitative descriptive study. The subjects in this study were machining subject teachers of class XI and XI grade students in mechanical engineering majors at VHS Muhammadiyah 1 Salam. The obtained data were analyzed through descriptive analysis. The results show the value of integrity that has been implemented by 88% of students by behaving honestly and responsibly. Professional values have been applied to 54.8% of students with standardized procedures and applying K3 while working. Productive value has been applied 69% of students according to the time and quality determined. 27 % of students have applied innovative value. Innovative value is applied by finding new alternatives at work. Competitive value has been applied by 53% of students by looking for information related to the field of work and confidence in showing competence.
The development of interactive learning media by manufacturing helical gear using milling machine
Authors: Rahdiyanta D , Anggoro Y , Wijanarka B S , Sasongko B T 
Published: January 2020

Abstract
This study is categorized as research and development (R&D) which aims to develop and determine the feasibility of interactive learning media by making helical gear using milling machine. The data collection method uses questionnaire. The respondent subjects are material experts, media experts, teachers, and students. The research data are quantitative and qualitative and these were analyzed using quantitative descriptive analysis techniques. The results of the study are interactive learning media by making helical gear using milling machine equipped with texts, images, videos and questions. The results of assessment of learning media from material experts gave 3.04 included in very feasible category. Media experts gave 3.64 included in very feasible category. Teachers gave 3.15 included in feasible category. Assessment of limited field trial got an average 2.99 included in feasible to be used category. An extensive field trial got an average 3.30 is included in very feasible category. Based on those results, the learning media is suitable to be used in learning process on helical gear material.
The development of educational media based on the flipped classroom model on practical lesson in vocational education
Authors: Tafakur  , Yudantoko A , Sudarwanto  
Published: January 2020

Abstract
Practical lessons in vocational education have been being got much attention from practitioners because of its importance. Additionally, the required 21st-century skills nowadays should be accommodated by educational programs so as to produce graduates that could survive. The aims of this study are to understand the required learning activities that students need to do in order to prepare their practical lesson, to produce educational media based on the flipped classroom model in the practical lesson and to examine the feasibility of the educational media. This is a Research and Development (R&D) study that used the ADDIE (Analysis, Design, Development, Implementation, and Evaluation) model. The result of this study is the learning activities including accessing the sources of knowledge, looking at simulation videos, and exercising the quiz. In addition, there is developed media based on the flipped classroom model covered in an online learning management system that contains fundamental articles, simulation videos, job sheet, and quiz. Besides, the level of feasibility of the educational media is in good category that means the educational media is feasible to be used in that practical lesson.
The effect of information and communication technology with learning activities towards student performance
Authors: Abbas W , Jermias D O S , Syauqi K 
Published: January 2020

Abstract
This research was aimed to know the effect of Communication Information Technology (CIT) and learning activities towards student performance in metal connecting technique lesson in Vocational High School 1 of Seyegan. This was descriptive research by using a quantitative approach. The research results showed that CIT and learning activities affected student performance. This result was concluded: (1) a positive effect of CIT towards student performance with determination coefficient of 32.7%; (2) a positive effect of learning activities towards student performance with determination coefficient of 8.7%; (3) there was a positive effect of CIT and learning activities jointly towards student performance in metal connecting lesson with determination coefficient of 10.9%.
Mapping graduate learning competencies of the automotive engineering education
Authors: Budiman A , Suyanto W , Efendi Y 
Published: January 2020

Abstract
The number of unemployed graduates from vocational schools continues to increase. The cause of unemployment is indeed complex. Various studies state that one of the causes of unemployment is teacher competency. Therefore, it is important to study the learning competencies of graduates of the Automotive Engineering Education Department, Universitas Negeri Yogyakarta (UNY), as one of the institutions producing vocational teacher candidates. This study was obtained from research using a qualitative descriptive method. The results showed that the learning competencies of the graduates of the Automotive Engineering Undergraduate Program required by the Light Vehicle Technology (TKRO) Vocational School varied greatly, but were dominated by behavior and attitudes towards students in learning. Learning competencies possessed by graduates of UNY’s Automotive Engineering Education Program are included in both categories. In addition, the competencies of graduates of the UNY in Automotive Engineering Education Program required by vocational school and those possessed by graduates are included in the relevant category.
Learning service through college student organization as a political awareness on higher education
Authors: Hidayah Y , Sapriya  , Dermawan C , Malihah E 
Published: January 2020

Abstract
This study aimed to investigate the devotion of learning through student organisations in providing political awareness and relation from the students in tertiary institutions. Qualitative interviews were conducted with 25 students who were active in student organisations such as College Student Organization from different campus in many different regions of Yogyakarta, Indonesia. The results of the study can be identified that there are several perspectives on the involvement of student organisations in providing political awareness and linkages that can be divided into two sides, namely positive views and negative views.
Industrial-based practical learning development for teacher competence of automobile technology
Authors: Sudarsono B 
Published: January 2020

Abstract
This research aims to: (1) produce appropriate industry-based practical learning models for students who is prospective teacher of automobile technology (AT) in vocational secondary school and (2) find out the effectiveness of industry-based practice learning in improving the initiative attitude and work discipline of Automotive Engineering Education (AEE) students at Muhammadiyah University of Purworejo. This is development research (R&D) with the subject of research was the Automotive Engineering Education students at Muhammadiyah University of Purworejo, Indonesia. PBI developed with the following development stages: (1) model development; and (2) model validation (internal and external validation). The scores of the observation of initiative attitude in each successive cycle are as follows: (a) the first trial gets a mean score of 1.44; (b) the second trial gets a mean score of 1.96; (c) the third trial gets a mean score of 2.84; (d) the fourth trial gets a mean score of 3.08; (e) and the fifth trial get a mean score of 3.40. While the score of the results of observing work discipline attitudes in each successive trial are as follows: (a) the first trial gets a mean score of 1.40; (b) the second trial gets a mean score of 2.44; (c) the third trial gets a mean score of 2.84; (d) the fourth trial got a mean score of 3.24; and (e) the fifth trial gets a mean score of 3.28.
The quality and quantity improvement efforts for Geblek Kulonprogo as a millennial healthy snack
Authors: Ratnaningsih  , Devi M K , Sugati D 
Published: January 2020

Abstract
Geblek is a traditional food made from wet cassava starch that has become an icon of Kulonprogo District, Special Region of Yogyakarta. The characteristics of geblek are white, number eight shapes, savory taste, and chewy texture. Some problems of Small and Medium Enterprises (SME), Patimurni Andani as the producer of geblek, are the cooking equipment for geblek dough, label and packaging that do not accordance with the goverment regulation. The objective of this community service is to improve the quality and quantity of geblek production as a milenial healthy snack. The method of this study consisted of the design and manufacture of the geblek dough cooker, the nutritional composition analysis, and the improvement of label and packaging. The results of this community service showed that the specifications for the geblek dough cooker were 75 cm in height and 45 cm in diameter, the material was from stainless steel 304, the maximum pressure was 5 kg/cm2, the maximum temperature was 145°C, the tank volume was 190 liters, the capacity was 150 kg, and the gas consumption was 0.8 kg/hour. These results suggested that the quality and quantity improvement of geblek could be implemented in SME to produce it as healthy snacks.
Decorating fabrics by applying tie and dye technique in Patemon Village of Central Java
Authors: Sawitri S , Prasetyaningtyas W , Syamwil R , Kusumastuti A , Pratiwi A , Harsari S 
Published: January 2020

Abstract
The problem to overcome in this Community Service was how to develop skills to decorate fabrics by applying tie and dye techniques to the house wives and teenager in Patemon village to become business. The target of this activity was house wives and teenager in Patemon village. The methods were used on this activity lecturer, demonstration and experiment. The results achieved are the realization of veil creation by applying tie and dye techniques in Patemon Village (72 %), it was high category. The housewives and teenager can use the skill in tie and dye, make many product. It can be used to increase the income in their family. Suggestions that can be submitted include: 1) Increase the number of practices, create another products and motive, by using tie and dye techniques, 2) Participants can develop the products by using other fabrics.
Synthesis and characterization of acid-activated bentonite from Aceh Tamiang
Authors: Wahyuningsih P , Harmawan T , Halimatussakdiah  
Published: January 2020

Abstract
Bentonite is new class of microporous materials with high surface areas which have been extensively studied as interesting material in catalyst application and adsorbents. The characterization of bentonite were performed using Infrared spectrophotometer, X-ray Diffraction, and Transmission Electron Microscopy (TEM) instruments. The results showed that the characteristic of natural bentonite and acid-activated bentonite does not give significant different results. XRD pattern of natural bentonite and acid-activated bentonite indicates those bentonites have the main content such as montmorillonite, quartz and alumina. The TEM profile showed the basal spacing in layered structure of acid-activated bentonite was increasing compared to the natural bentonite. The natural bentonite showed the characteristic absorption peaks such as Si-O, Al-O, Si-O-Si which is observed at wave numbers 1149,57 cm−1, 945,12 cm−1, 640 cm−1, and 459 cm−1 but the acid-activated bentonite only showed the characteristic absorption peaks such as Si-O and Al-O which is observed at wave numbers 1018,41 cm−1and 493,78 cm−1. The absorption intensity of streching – OH peak on acid-activated bentonite higher than natural bentonite. It indicates that the bentonite after activation is more pure compared to bentonite before activated.
Analysis of smart city indicators based on prisma : systematic review
Authors: Adiyarta Krisna , Napitupulu Darmawan , Syafrullah Mohammad , Mahdiana Deni , Rusdah Rusdah 
Published: January 2020

Abstract
This study aims to conduct a review of Smart city literature specifically related to Smart city indicators from various cross-studies. The method used is a systematic literature review consisting of five stages, namely defining eligibility criteria; define the source of information; literature selection; data collection and item selection with synthesis techniques. The results of the study showed a set of indicators consisting of 43 indicators classified into 8 categories of Smart City. Smart city indicators and categories are contributions from this research to fill the literature gap theoretically and help cities monitor their performance overtime.
Analysis of determining centroid clustering x-means algorithm with davies-bouldin index evaluation
Authors: Mughnyanti M , Efendi S , Zarlis M 
Published: January 2020

Abstract
Clustering is a process to group data into several clusters or groups so the data in one cluster has a maximum level of similarity and data between clusters has a minimum similarity. X-means clustering is used to solving one of the main weaknesses of K-means clustering need for prior knowledge about the number of clusters (K). In this method, the actual value of K is estimated in a way that is not monitored and only based on the data set itself. The results of the study using the X-Means algorithm with the Davies-Bouldin Index evaluation to determine the number of Centroid clusters is done by modifying the X-Means method to do some centroid determination to get 11 iterations. The result is produces cluster members that have a good level of similarity with other data. In determining the number of centroids, use the Davies-Bouldin Index method where testing with 2 clusters has a minimum value with a DBI value close to 0.
Combination of 3des with dct algorithm in message security
Authors: Guntur S. , Nasution MKM , Nasution RW 
Published: January 2020

Abstract
In the digital era, communication through computer networks plays an important role. Through electronic communication, a person can make transactions or communication very quickly and practically. Sending data / messages from one place to another is much constrained by the issue of confidentiality. There are many ways you can hide data / messages that will be sent. First, using cryptographic techniques, namely by encoding data / messages using certain algorithms. Another technique is to insert a message that will be sent to other media, so that the message will be hidden and what will appear is other media used to insert messages.Here will be performed a Performance Analysis of the Combination of 3DES and DCT Algorithms in Securing Message Files into the Image.
Chemically functionalized graphene oxide thin films for selective ammonia Gas sensing
Authors: Kumar Ravi , Singh Rakesh , Kumar Anil , Kashyap Rajesh , Kumar Dinesh , Kumar Mukesh 
Published: January 2020

AbstractIn this work graphene oxide has been functionalized using Para chloro benzoic acid (PCBA). Three different concentrations of PCBA were used for functionalization on the GO surface. Functionalization was confirmed by the study of X-ray diffraction (XRD) and Fourier transform infra-red spectroscopy (FTIR) characterization. Raman characterization was used for the study of defects on the functionalized GO surface. Langmuir–Blodgett technique was used for the deposition of a thin film. This deposited layer was used as a sensing layer for the detection of ammonia gas. Aluminum contacts were made for electrical measurement using thermal evaporation technique and annealed to obtain a good quality of contacts. The sensor behavior was observed for all three concentrations of PCBA and it has been observed that increase in PCBA concentration leads to the high sensor response and the maximum response was observed for the higher concentration of PCBA i.e. 75 mM. The senor was tested for different gas concentrations varied from 100 ppm to 1200 ppm. Also the selectivity and long term stability of prepared devices has been investigated.
Structural and magnetic properties of cobalt doped ZnO thin films deposited by cost effective nebulizer spray pyrolysis technique
Authors: Abirami N , Arulanantham A M S , Wilson K S Joseph 
Published: January 2020

Abstract
In this work, we report the structural, optical and magnetic properties of Co doped ZnO thin films fabricated by nebulizer spray pyrolysis technique. Five different thin films were fabricated with various doping concentration of cobalt. These thin films posses hexagonal wurtzite structure with polycrystalline nature and strongly oriented along with (002) and (101) direction. From x-ray diffraction pattern, average crystallite sizes were calculated and are found to be decreases with Co doping concentration. The dislocation density and microstrain values of the coated films increased gradually with doping concentration. The SEM/AFM studies reveal the change from spherical shape to petal shaped grains and it is also found that the size of grains and roughness decreases with Co increasing doping concentration. The lowering of the optical band gap energy from ∼ 3.24 eV to 3.05 eV shows doping by Co in ZnO gives rise to band gap bowing in ZnO:Co thin films. The M-H curve confirms the god ferromagnetism in Co doped ZnO thin films.