bluuebunny/crossref_metadata_2025_split huggingface dataset:
Quantum bridges in phase space: interference and nonclassicality in strong-field enhanced ionisation
Authors: Chomet H , Sarkar D , Figueira de Morisson Faria C 
Published: November 2019

Abstract
We perform a phase-space analysis of strong-field enhanced ionisation in molecules, with emphasis on quantum-interference effects. Using Wigner quasi-probability distributions and the quantum Liouville equation, we show that the momentum gates reported in a previous publication (Takemoto and Becker 2011 Phys. Rev. A 84 023401) may occur for static driving fields, and even for no external field at all. Their primary cause is an interference-induced bridging mechanism that occurs if both wells in the molecule are populated. In the phase-space regions for which quantum bridges occur, the Wigner functions perform a clockwise rotation whose period is intrinsic to the molecule. This evolution is essentially non-classical and non-adiabatic, as it does not follow equienergy curves or field gradients. Quasi-probability transfer via quantum bridges is favoured if the electron’s initial state is either spatially delocalised, or situated at the upfield molecular well. Enhanced ionisation results from the interplay of this cyclic motion, adiabatic tunnel ionisation and population trapping. Optimal conditions require minimising population trapping and using the bridging mechanism to feed into ionisation pathways along the field gradient.
Finite-size effect of the thermal conductivity in one dimensional chain
Authors: Wei Tongli , Li Yaojin , Cheng Jinxia , Jia Chenglong 
Published: November 2019

Abstract
Finite-size effect of the thermal conductivity in one dimensional chain is theoretically investigated with a phenomenological model. Boundary temperature dropping and the spectrum-dependent linear temperature profile within the chain are given self-consistently at high temperatures. A general formula of thermal conductivity is presented and a good agreement with the molecular dynamics simulations is obtained. It is found that while

d

1

κ

/

d

1

L

decreases with increasing of 1/L monotonically, the well known linear dependence of thermal resistance 1/κ on the reciprocal length 1/L of systems is, however, valid only in two limit cases of

1

/

L
→
∞

and/or

1

/

L
→
0

.
Casimir stresses in active nematic films
Authors: Basu Abhik , Joanny Jean-Francois , Jülicher Frank , Prost Jacques 
Published: November 2019

Abstract
We calculate the Casimir stresses in a thin layer of active fluid with nematic order. By using a stochastic hydrodynamic approach for an active fluid layer of finite thickness L, we generalize the Casimir stress for nematic liquid crystals in thermal equilibrium to active systems. We show that the active Casimir stress differs significantly from its equilibrium counterpart. For contractile activity, the active Casimir stress, although attractive like its equilibrium counterpart, diverges logarithmically as L approaches a threshold of the spontaneous flow instability from below. In contrast, for small extensile activity, it is repulsive, has no divergence at any L and has a scaling with L different from its equilibrium counterpart.
SI-traceable monoelemental solutions on the highest level of accuracy: 25 years from the foundation of CCQM to recent advances in the development of measurement methods*
Authors: Röthke A , Görlitz V , Jährling R , Kipphardt H , Matschat R , Richter S , Rienitz O , Schiel D 
Published: November 2019

Abstract
Within the Working Group on Inorganic Analysis (IAWG) of the Consultative Committee for Amount of Substance: Metrology in Chemistry and Biology (CCQM) international key comparisons and pilot studies related to inorganic analysis are carried to ensure consistency in this field at the highest level. Some of these comparisons deal directly with the preparation and characterization of monoelemental solutions or with topics, closely related. The importance of monoelemental solutions lies in the fact that almost every measurement in inorganic analysis relies on the comparison with either a reference material, or references in form of solutions, usually (mono)elemental solutions. All quantitative measurement approaches, e.g. isotope dilution or standard addition, need an accurate reference solution made from a well characterized reference material, prepared under full gravimetric control. These primary (monoelemental) solutions do not only serve as arbitrary references/calibration solutions, but they also link up measurement results to the International System of units (SI), this way establishing the so-called metrological traceability to a measurement unit of the SI. Without such solutions on the highest possible level of accuracy and with the smallest possible associated uncertainties (for e.g. element content and/or impurities), an analysis itself can never be as good as it could be with appropriate reference solutions. This article highlights select key comparisons and pilot studies dealing with monoelemental solution-related topics within the IAWG from the foundation of CCQM—25 years ago—up to latest achievements in the field of inorganic analysis.
Evaluation of Occupational Health and Safety (OHS) Implementation of Vocational High School Workshop at Surakarta City
Authors: Basori  
Published: November 2019

Abstract
The high number of work accidents due to human error or another is one that needs to be considered in the framework of both industry and educational institutions. This study is intended to determine the effectiveness of the level of implementation of Occupational Health and Safety (OHS) regulations in vocational schools in the city of Surakarta. This research used research method that developed by Stufflebeam, that was CIPP model (Context, Input, Process, Product). The population in this study was all vocational students in the city of Surakarta. The sample was used 217 students with purposive sampling technique in 4 places namely SMK Negeri 2 Surakarta, SMK Negeri 5 Surakarta, SMK Pancasila Surakarta, and SMK Purnama Surakarta. Data collection using interviews, observation, documentary studies and questionnaires. Data analysis for qualitative data using interactive analysis model and the quantitative data using assessment criteria. The results show that, Context: (1) There is no official who joined OHS (2) The absence of detailed division of tasks. Input: (1) There is no system integrated with the school structure, (2) No officers are trained in OHS field, (3) OHS facility has standard with a percentage equal to 68, 2%. Process: (1) The use of OHS infrastructure includes the high category with the percentage of 59, 9%. (2) Student motivation and awareness of OHS included in a high category with a percentage of 68, 2%. (3) OHS materials have been processed in basic subjects, only less training. Product: Implementation of OHS in School workshop included in a high category with percentage 82, 5%.
Increasing vocational school students’ competency of automotive brake system by implementing diagnostic problem-based e-jobsheet
Authors: Fadhilah Makunti Janatun , Widjanarko Dwi 
Published: November 2019

Abstract
This study aims to determine product feasibility, effectiveness, and student responses to e-job sheet based the diagnostic problem on brake system checking competence. The research method used is Research and Development (R & D). The results of the product feasibility test by the media expert were 90.6% and by the material experts 84%, both stated very feasible. The product effectiveness test used a one-group pretest-posttest design test, the result of the students’ competence increased from 42% to 84%. This shows that there was a significant difference in the average competence of students between before and after using the e-job sheet based diagnostic problem with a tcount of 14.77>ttable of 2.10. The result of the n-gain test obtained medium improvement criterion with average 0.33. Analysis of students’ responses obtained 89.08% which is categorized very good.
Adaptive Hypermedia System Development Based on Moodle to Overcome the Diversity of Learning Style on Vocational Education in Indonesia
Authors: Setiawan Toni , Irlanto Sudomo R. , Nur Hasanah Fatmawati 
Published: November 2019

Abstract
The inputof vocational education college does not come from one source, but several sources, from high school or other kind of high schools and from vocational high schools or other kind vocational high school, so students have diverse learning styles.This research is type of R&D (Reseach and Development), the research procedure consists of: 1) make the needs analysis of products that will be developed based on the potential and problems of moodle-based adaptive hypermedia; 2) reviewing the study of literature and information by observation; 3) designing basic products; 4) expert validation; 5) revision of product design; 6) designing media; 7) perform a functional trial; 8) first product revision; 9) user trials; 10) second product revision; 11) product implementation. The results of this research are adaptive hypermedia with link http://www.evodu.net/, adaptive hypermedia is designed specifically for college students in vocational education with diverse learning styles.
Development of “Image Processing” Practical Learning Model On Diploma Program Informatics Engineering Department
Authors: Sulendro Mangiri Herry 
Published: November 2019

Abstract
This research was conducted by students of Informatics Engineering diploma program at the Teachers’ Training College in Central Java. This study uses a research model for the development of a 4D model learning system. Before the research was carried out the initial needs analysis on the Practical Image Processing learning that took place so far in the Informatics Engineering diploma program. This research aims to find out the suitability of the practice learning model needed by the industrial world. The results of the initial needs analysis show that the practical learning model is needed by students in improving the ability and skills of the Image Processing field. The stages in developing practical learning use 4D as follows: 1) defining; 2) design; 3) development; 4) dissemination. The four stages include: a) lecturer and student observation; b) designing teaching materials; c) design of practicum modules; d) designing practicum instructions; e) designing practicum tools; f) validation of teaching materials experts, practice modules, media practice tools; g) limited trial.
In this study is still in the development stage, for the dissemination phase in further research. In the desimanation stage is a wide dissemination stage of the results of the design of practical learning models
The Effectivity of Snowball Throwing Learning Model Viewed From the Activeness and the Achievement of Students at Vocational High School
Authors: Al Hafidz Miftah , Arifin Zaenal 
Published: November 2019

Abstract
The purpose of this research is to know the effectivity of snowball throwing learning model at Maintenance of Light Vehicle Engines Subject viewed from the activeness and the achievement of Students at Vacational High School. This research is a Classroom Action Research (CAR) and conducted in 3 cycles consisted of 4 stages; they are planning, action implementation, observation, and reflection. The subjects of this research were 30 students grade XI TKR A Vacational High School Pembaharuan Purworejo. The results of the research showed that: (1) Snowball throwing learning model is proven able to improve students’ activeness. That can be seen from the improvement in every cycle; cycle I is 53,3%, cycle II 58%, and cycle III 68,8%. (2) The learning implementation by using snowball throwing learning model can improve the achievement of Grade XI TKR A students at Maintenance of Light Vehicle Engines Subject. It can be seen from cycle I, the number of students whose learning is complete 33,3%, while at cycle II is 62,5%, and at cycle III is 83,3%.
Implementation of Industrial Classes Vocational School with Astra Honda Motor In Sukoharjo
Authors: Farhan Sabiq , Arifin Zainal 
Published: November 2019

Abstract
This study aims to determine the implementation of the industrial class of Vocational School with Astra Honda Motor in Sukoharjo. This study includes a type of quantitative research with a descriptive approach. Data collection techniques using questionnaires and data analysis techniques carried out by steps (1) collecting respondents’ data; (2) analyze the data by describing or describing the collected data; (3) presents in graphical form (visual).ndustrial Class Indicators are measured based on guidelines from Developing Effective Cooperation between InstitutionsVocational Training and Industrial Training Directorate of Vocational Development, namely: implementation of Honda curriculum, implementation of Industrial Work Practice, and implementation of industrial culture (5R). The results of this study indicate that this indicator mostly shows a very good category.
Maintenance Management Of Welding Engineering Workshops In Vocational High Schools Inspecial Region Of Yogyakarta
Authors: Jarwono Tri , Ardian Aan 
Published: November 2019

Abstract
This study aimed at investigating the maintenance management of welding engineering workshops and factors affecting the damage of welding equipment in vocational high schools located in Special Region of Yogyakarta. The study employed quantitative descriptivedesign. It was conducted at vocational high schools SMKN 1 Sedayu, SMKN 2 Pengasih, SMK Muhammadiyah 2 Wates, and SMKN 1 Pundong. The respondents were heads of workshops, teachers of welding engineering subject, workshop technicians, and students. The data were collected through survey, observation, and interview. The quantitative descriptive technique was employed to analyze the collected data. The results of the study show that the maintenance management of welding engineering workshops in some VHS in Yogyakarta is Very Gooddespitesome problemsin the maintenance procedure. The factors causing the equipment damage are the unscheduled maintenance procedure, absence of inventory lists, lack of technicians, improper use of workshop equipment, and the limited amount of maintenance budget.
Using Car Toys with Videos to Introduce Kinematics in Physics
Authors: Aghastya Adya , handhika Jeffry , Sunaryo  , Widi Astuti Septiana , Jamaludin  
Published: November 2019

Abstract
This research aims to describe the use of car toys with Videos (TwV) in introducing Kinematics. This research specifically also provides information on the advantages and disadvantages of using TwV in learning Physics. This research was conducted at the Indonesia Railway Academy (IRA) - Madiun in the railway transportation management program, taking Physics classes A and B (46 students). A pre-test and a post-test of the concept of kinematics were given to determine the influence of TvW. It can be concluded that the use of TvW increases the kinematics conception test scores with N-Gain (0.44). The weaknesses in the TvW media can stimulate the emergence of the cognitive conflict and higher order thinking skills in which the students are required to discuss the causes of the incompatibility of experimental results with the theory.
The Development of “Manufacturing Drawing” Video Tutorials in State Vocational High School SMKN 2 Pengasih
Authors: Noviyanta Ridwan , Ngadiyono Yatin 
Published: November 2019

Abstract
This research aims to develop and examine the feasibility level of the video tutorials for the Manufacturing Drawing subject in state vocational high school SMKN 2 Pengasih using the Inventor 2013 software. This research employs the research and development (R&D) model. The product assessment or validation was done by experts in the subject and the media, followed by an initial and final testing by the research participants. The obtained data are analyzed using the descriptive analysis technique. The product of the research is a set of MP4 video tutorials with 1280 x 720 format, not-too-long duration, texts, voice narration, and music accompaniment, which are put together in a PowerPoint program. The mean scores of the product in the subject materials assessment, media assessment, initial testing, and final testing are 3.30, 3.55, 3.37, and 3.18, respectively. The total mean score of the product (3.35) is classified as Very Good, which means that the video tutorials are feasible for use.
Students’ Competences in Practicums of Various Competencies in Machining Engineering
Authors: Ardhian Syah Dhany , Nuryanto Apri 
Published: November 2019

Abstract
This study aimed at investigating productive practicums of various competencies and the competences of Machining Engineering department students of Muhammadiyah 1 Bantul Vocational High School. It is a descriptive study which employed both quantitative and qualitative research designs. The practicums of various competencies consisted of seven stages led by two teachers. Those stages are opening, presenting the introductory theory, demonstrating, conducting productive practicums of various competencies, evaluating, giving feedback, and closing. Based on the data analysis, the percentage of students’ response is 70%, and it is categorized as good. The average score of the students’ competences is 81.67, and it is also categorized as good. Finally, the percentage of students’ activity aspect is 90%, and it is also categorized as very good.
The Effects Of Industrial Working Practices And Student Competencies On Work Readiness Of Students In SMKN 1 Sedayu
Authors: Eko Saputro dan Sugiyono Aryo 
Published: November 2019

Abstract
This research aimed to analyze the effects of industrial working practices and student competencies on students… work readiness. This research is a survey involving 72 respondents (grade 12 students). Data were collected using a questionnaire (Likert scale) and documentation techniques. The results suggest that the industrial working practices… achievement is considered high (77.8%), students… competencies are considered high (79.6%), and students… work readiness also falls within high category (79.4%). Industrial working practices have positive and significant effects on students… work readiness indicated by > (4.396 > 1.667) with correlation of 0.465. Student competencies have positive and significant effects on students… work readiness indicated by > (2.262 > 1.667) with correlation of 0.261. Both industrial working practices and student competencies have positive and significant effects on students… work readiness calculated by using = 9.911 > = 3.130 with correlation of 0.471.
The 2013 Curriculum-Based Learning Evaluation At Vocational High Schools In Yogyakarta Special Region
Authors: Purnomo Edy , Triwiyono Endri 
Published: November 2019

Abstract
The applying curriculum in Indonesia is currently the 2013 Curriculum that has been used at all levels of education (The Regulation of the Minister of Education and Culture of the Republic of Indonesia No. 60 of 2014). The purpose of the 2013 Curriculum in general is to prepare Indonesian people to have the ability to live as individuals and citizens who are faithful, productive, creative, innovative, and affective and contribute to the lives of the society, nation, and world civilization (Mulyasa, 2013: 7). Regarding these changes, the implementation of the 2013 Curriculum in Vocational High Schools (VHSs) uses the scientific approach (The regulation of the Minister of Education and Culture of the Republic of Indonesia No. 103 of 2014). In addition, it has been understood that the implementation of learning itself can serve as thecrucialaspect in assessing the success of learning. Because no matter how good the curriculum is made, unless the teacher properly carries out the learning in accordance with the existing curriculum, the curriculum will not run well. This is because the curriculum and its learning process are two inseparable things even though they are in different positions.
Mapping The Graduate Quality Of Automotive Engineering Education (S1) Study Program FT UNY
Authors: Haryana Kir , Nirmala Adhi Yoga P , Sudiyanto  , Sutiman  
Published: November 2019

Abstract
The particular study aimed to; 1) know the job’s field of graduate; 2) know the graduate’s waiting period to get a job; 3) know the quality of graduates; 4) know the relevance of educational material; 5) collect the advice and inputs from graduates for the development of Study Programs; and 6) mapping the positions for graduates. This study was a descriptive study. The population in this study was all alumni of Automotive Engineering Education Study Program and selected using Snow Ball Sampling. Data collection was through questionnaires and documentation. The data analysis technique used descriptive analysis. The findings showed; 1) Most types of alumni’s job are vocational school teachers in the automotive field (52%); 2) The most waiting period for graduates is between 1-2 months (57.6%); 3) The quality of graduates is in a very good category; 4) The majority of alumni stated that the material on study program curriculum is in the relevant category (52%); 5) Suggestions and inputs from alumni for the development of study programs, i.e. improving the English skills and soft skills for students, means of practice and cooperation; and 6) Most respondents stated that the level of the workforce’s needs for graduates is in the very high category (45%) and there are 28 types of jobs for graduates.
Gaps in VHS graduate followership skills against labor needs in industry
Authors: Sari AS , Mariah S 
Published: November 2019

Abstract
The level of qualification of vocational graduates according to Indonesia National Framework is at level two working. The position of workers in the industry is basically a follower. No leader is successful if not supported by reliable followers, but loyalty to tasks and positions is still not developed in education and training in Vocational High School (VHS). The purpose of this research is to know the gaps in followership skills of VHS graduates with the requirement of manpower in industry. The research method used descriptive quantitative. The subjects of the study were a supervisor, principal and teacher of VHS in Yogyakarta. Determination through purposive sampling as much as 27 respondents. Test validity 27 statements concerning the instrument, while all instruments stated reliable with high reliability. From the average expected total score of 24.33 is categorized as high. While the response from the industry is 12.065 which means low. The gap between expectations and industry responses to followership skills of 12.265. These results explain that there is a gap between the need for followership skills of VHS graduates to the workforce in the industry. In the future, a learning model needs to be developed so that the gap can decrease.