bluuebunny/crossref_metadata_2025 huggingface dataset:
La aplicación del artículo 1320 CC como orden público en el ordenamiento español. A propósito de la resolución de 31 de enero de 2022, de la Dirección General de Seguridad Jurídica y Fe Pública
Authors: Rodríguez Rodrigo Juliana
Published: March 2023

En la RDGSJyFP, de 31 de enero de 2022, se analiza si la venta de un inmueble, realizada por los tres copropietarios del mismo, necesita el consentimiento del cónyuge de uno de ellos por tratarse de la vivienda habitual de la pareja. La exigencia del consentimiento del cónyuge no titular de la vivienda habitual puede venir impuesta por la ley rectora del régimen económico matrimonial o puede tener que aplicarse por formar parte del orden público del foro. En nuestro caso, el ordenamiento regulador de las relaciones patrimoniales de los cónyuges es el británico, en virtud de la primera conexión del artículo 9.2 CC, y, según el mismo, existe total libertad a la hora de que el cónyuge disponga de los bienes que son privativos de él. Por esta razón se plantea si puede exigirse el consentimiento del cónyuge no titular por la aplicación del artículo 1320 CC, como norma de orden público del ordenamiento español. Finalmente, se considera que el inmueble no constituye la vivienda habitual de la pareja y, por ello, no es necesario el consentimiento del cónyuge para que la venta del bien sea válida e inscribible.
La presunción del daño causado por un ilícito antitrust según el Tribunal Federal Alemán (Bundesgerichtshof)
Authors: Suderow Julia , Krüger Carsten
Published: March 2023

De acuerdo con el Tribunal Supremo Alemán o BGH se puede presumir que el intercambio anticompetitivo de información genera un incremento de precios y por tanto un efecto perjudicial. En este artículo presentamos la evolución de la jurisprudencia a través de las sentencias relativas al cártel de la cerveza, al cártel de camiones y al de productos cosméticos. Se analizan tanto las conclusiones relativas al Derecho Administrativo alemán como las relativas al Derecho Civil de daños.
Franco Mosconi / Cristina Campiglio. Diritto internazionale privato e processuale, vol. 1, Parte generale e obbligazioni
Authors: Carrascosa González Javier
Published: March 2023

Este artículo reseña: Franco Mosconi / Cristina Campiglio. Diritto internazionale privato e processuale, vol. 1, Parte generale e obbligazioni, 10ª ed., Utet Giuridica, Manuali universitari, Milano, 2022, 608 pp. ISBN: 8859824923
Nuria Marchal Escalona. El divorcio no judicial en Derecho internacional privado español
Authors: Carrascosa González Javier
Published: March 2023

Este artículo reseña: Nuria Marchal Escalona. El divorcio no judicial en Derecho internacional privado español, Editorial Aranzadi, Navarra, 2022, 214 pp. ISBN 9788411249089
Isabel Antón Juárez. Litigación internacional en la Unión Europea (VI), El proceso monitorio europeo
Authors: Rodríguez Vázquez Mª Ángeles
Published: March 2023

Este artículo reseña: Isabel Antón Juárez. Litigación internacional en la Unión Europea (VI). El proceso monitorio europeo, Cizur Menor, Thomson Reuters Aranzadi, 2022, 357 pp.
Afanasij Nikitin : ein Russe entdeckt Indien (E. 15. Jh.) : eine Präsentation für das Studium Generale
Authors: Kempgen Sebastian
Published: March 2023

Die Präsentation setzt die "Reise über drei Meere" Afanasij Nikitins (im 15. Jh.) in einen historischen Kontext und zeigt deren einzelne Stationen, vor allem den Aufenthalt in Indien, sowie wesentliche Inhalte auf. Für das Verständnis werden keine slawischen Sprachkenntnisse vorausgesetzt.
Bursa İli Mudanya İlçesi Aktif Yeşil Alanları Üzerine Bir Araştırma
Authors: MÜDÜK Burcu , ZENCİRKIRAN Murat
Published: March 2023

Şehir hayatı içerisinde insanlar, ihtiyaçlarını karşılayabilecekleri, yorgunluklarını ve streslerini azaltabilecekleri aktif yeşil mekânların arayışı içerisindedir. İnsanların ve doğanın kaynaşmasına olanak sağlamak için oluşturulan bu alanlar planlama ve tasarım yönleriyle ülkeler ve bölgelere göre farklılıklar göstermektedir. Aktif yeşil alanların ulaşılabilirlik ve etkin hizmet alanları kapsamında değerlendirildiği bu çalışma; Mudanya ilçesinin yüz ölçümünün yalnızca %11,61’lik kısmının etkin hizmet alanları içerisinde bulunduğunu, ilçede bulunan 29 mahallenin ortalamanın altında etkin hizmet alanına sahip olduğunu ortaya koymuştur. Tespit edilen bu olumsuzlukların giderilebilmesi için aktif yeşil alanların dağılımının etkin hizmet alanları dikkate alınarak gerçekleştirilmesi ve bu tip alanların yer almadığı mahallelere öncelik verilmesi gerekmektedir.
Synthesis Characterisation and Anti-Fungal activity of some Nitrosubstituted Quinoxalines against Aspergillus niger
Authors: Jyoti Bablee , Alam Naz Perween , Kumar S. R.
Published: March 2023

Some Quinoxaline compounds containing nitro group in the nucleus have been planned to synthesise and evaluate for antifungal activity against Aspergillus niger. Physical treatment e.g T.L.C melting point, IR, NMR, spectroscopy and finally with alternative method of synthesis. Anti-fungal activity was performed against Aspergillus niger by cup-plate method (diffusion method) using griseofulvin as standard compound. A.niger produces most alarming infection and to protect from this infection there is a requirement to develop a new replacement drug which is effective against resistant fungi having lesser toxicity as well as economical also. In the present work efforts have been made to synthesise the proposed compounds N – 01 to N – 09 and screened for antifungal activity.
Screening of Yeasts Isolated from Agro-Material for Alcohol Fermentation Potential
Authors: Nma Odu Ngozi , Ezeonyilimba Joy Uchechukwu , Douglas Salome Ibietela
Published: March 2023

Yeasts are the most important microorganisms during alcoholic fermentation because they influence fermentation speed, wine flavour and other wine qualities. The aim of this study was to Screen Yeasts Isolated from Agro-Material for Alcohol Fermentation Potential. Agro-materials used were palm wine and pineapple waste. The palm wine was left to ferment for five days. Both the fermented palm wine and the juice extracted were serially diluted in peptone water. From the diluted palm-wine and pineapple juice sample, 0.1ml of 10-5 and 10-6 dilutions were inoculated onto the PDA plates and spread-plated. The inoculated plates were incubated at 30°C for 48 – 72 hours, after which colonies were primarily identified by morphological and microscopic methods. Further identification was done using molecular techniques. TheIdentified isolates were screened for their tolerance ability. Yeast isolates were screened for Alcohol tolerance (0% to 15%), pH tolerance (pH 2 to pH 4) and sugar tolerance (0% to 20%). The results of the morphological characterization of the yeast showed that Isolates Pn3, Pw7 and Pw9 matched the description of Candida specie, isolate Pn4 identified as Pichia species, while isolates Pn5, Pw4, Pw5, Pw6 and Pw11 were identified as Saccharomyces cerevisiae. Results from molecular characterisation of the selected yeast isolates shows that Isolate PwP11 identifies as Saccharomyces cerevisiae strain YBA 08 which has NCBI accession number MN158119.1, PnY4 as Pichia kudriavzevii isolate A60G10 which has NCBI accession number MF285861.1 and PwP9 as Candida nivariensis strain CNRMA6.84 which has NCBI accession number KP131741.1. The yeast isolate for fermentation of ethanol screened revealed that Saccharomyces cerevisiae strain YBA 08 from 3 days old Palm wine and Pichia specie from 3days old Pineapple juice has the highest reading for pH tolerance, ethanol tolerance and sugar tolerance. These results reveal that both isolates had the ability to breakdown sugar containing substrate to alcohol and can tolerate pH environment.
Photosynthetic Microorganisms from Three Mexican Archaeological Sites
Authors: Medina Jaritz Nora , Jiménez S. Pérez , Ramírez Roxana Olvera
Published: March 2023

Historical monuments and buildings represent an important part of the cultural legacy of past civilizations, in addition to being considered sites of endemic diversity, knowledge of this is essential, especially in photosynthetic organisms, since they are the pioneers in the establishment of those communities. Even though the morphological identification of photosynthetic microorganisms represents a challenge due to the phenotypic plasticity they present, so the use of Molecular Biology techniques is essential. The objective of this work was to identify species of microalgae and cyanobacteria present in three archaeological zones: Malinalco and Teotihuacán of the State of Mexico and Yohualichan, of the State of Puebla, through the partial amplification of the genes that code for the 16S rRNA and 18S rRNA subunits by the PCR technique using 2 pairs of primers and the sequencing of the amplified ones. In this way, 3 of the 10 strains isolated at the species level were identified: Chlorella sorokiniana, Chlorococcum vacuolatum and Klebsormidium crenulatum, and the other just at genus level because some initiators did not provide enough information. In this way, the use of morphological and molecular characters contributes to a more complete and reliable taxonomic identification.
Production and Marketing of Olives in the Governorates of Northern Upper Egypt - A Case Study in Fayoum Governorate
Authors: Rabee Mansour Ghedan Ghada Abd El Samee
Published: March 2023

The study mainly aims to study the production and marketing of olives in Fayoum governorate, and the most important problems and obstacles facing it in the stages of production and marketing, and proposing solutions to them. The research method in the study relied on the use of the two methods of descriptive and quantitative statistical analysis. The study also relied on published and unpublished secondary data for the study variables issued by the official authorities. Two questionnaires were designed, one for the production of the olive crop and the other for olive pickling factories. Selection of the study sample: Two main centers were selected from Fayoum Governorate, according to the area of olives planted in the centers of Fayoum Governorate. Accordingly, the village of ManshiyetQarun was chosen from the Youssef Al-Siddiq Center, as it has the largest area for olive cultivation in the center, and the village of Manshiy et al.,-Jamal from the Tamiya Center. The study concluded: Fayoum Governorate is considered one of the most important governorates in olive cultivation, as the relative importance of the governorate in relation to the Republic ranged between 6.54, 6.33, 6.42 for the years 2015, 2016, 2017 of the area in acres, and the percentage of the fruitful area was 8.87, 7.77, 6.68 for the years 2015, 2016, 2017. The study showed the relative importance of the production of Fayoum Governorate compared to the Republic, where for the years 2015, 2016, 2017 it was 9.84, 8.65, 7.01 tons. The study data also showed that Fayoum governorate ranks first among the governorates of central Egypt in terms of the area of olive cultivation and production, as the total area of olive cultivation reached about 15548 acres, representing about 63.1% of the average area of olive cultivation in central Egypt, which is about 24683 acres in 2018. 2017, and it also ranks first in terms of production, with a production volume of about 76,823 tons, representing about 64.6% of the total average Egyptian production of about 118,840 tons of olives in 2017.
Study of Shade Net Cultivation Compared to Open Field on Yield of Potato Varieties (Solanum tuberosum L.)
Authors: P. S. Rathiya Sweety Kerketta , J. K. Tiwari R. Tigga , Chouksey Neelam , Prajapati Deepak
Published: March 2023

A field experiment was conducted at the potato research station, Mainpat, Surguja (C.G.) during Rabi season 2021-22 with a view to study the “Study of shed net cultivation compared to open field on yield of potato varieties (Solanum tuberosum L.)”. The field experiment was carried out in split plot design with three replications. The soil of experimental field was sandy clay soil. The investigation, There were the recommended dose of fertilizer NPK kg ha-1 was applied at different concentrations in potato with two production system (Main plot) i.e., P1- Open field and P2- Shed net house and four potato varieties (Subplot) i.e., V1-KufriKhyati, V2-Kufri Lalit, V3-KufriChipsona- 3, and V4- True Potato Seed (F2C2) which were interaction effect of potato. The yield attributes of potato i.e. number of tubers plant-1, fresh weight of tubers plant-1 (g), tuberization efficiency (tuber: haulm), grade wise tuber yield i.e.<50g, 50-100 g &>100 g, total tuber yield and haulm yield of potato were significantly superior in shade net house growing system (P2) with Kufri Lalit (V2) variety. On the basis of above findings, among the different production system P2(Shed net house) followed by P1 (Open field) showed the best result for all the parameters. Amongst the different verity V2 (Kufri Lalit) followed by V3 (Kufri Chipsona-3) recorded best result for all the parameters. However, interaction effect of variety with production system P2V2(Shed net house and Kufri Lalit) followed by P2V3(Shed net house and Kufri Chipsona-3) noticed best result for all the treatments of yield parameter.
LEADERSHIP COMPETENCIES, ORGANIZATIONAL LEARNING AND ORGANIZATIONAL PERFORMANCE OF TOURISM FIRMS: EVIDENCE FROM A DEVELOPING COUNTRY
Authors: Mai Ngoc Khuong , Do Thanh Tung , Ho Nguyen Dieu Trang
Published: March 2023

Purpose – This study aims to investigate how leadership competencies (cognitive, interpersonal, and results-oriented competencies) and four dimensions of organizational learning (knowledge acquisition, knowledge distribution, knowledge interpretation, and organizational memory) contribute to organizational performance of tourism firms. Design/Methodology – Data were collected from leaders working at various tourism establishments in Vietnam – a developing country in the Asia. Smart-PLS software was used to perform structural equation modelling of 638 valid responses. Findings – The results showed that among the three proposed leadership competencies, only managers’ result orientation exerted a significant influence on organizational performance. Knowledge acquisition and knowledge sharing were fully influenced by the three leadership competencies, while knowledge interpretation and organizational memory were facilitated by the cognitive and outcome-oriented competencies. Knowledge acquisition and knowledge interpretation were positively related to organizational performance. The mediating effect of organizational learning was supported by the existence of knowledge acquisition. Originality of the research – Although the topics of leadership competencies, organizational learning, and organizational performance have received a great concern among worldwide academia, there is scarce research examining the relationships among these three phenomena together. This paper is among the first study that offers a more comprehensive model of the relationship between these domains.
Prospects for the Development of Reference Materials of the Wobbe Index
Authors: Malginova N. A. , Korchagina E. N. , Kazartsev Ya. V.
Published: March 2023

The thermophysical properties of gaseous fuel, including the calorific value and the Wobbe index, are one of its main properties for industrial use. The correctness of measurements of the volumetric energy of gas combustion is currently ensured by using sets of certified reference materials of the lowest volumetric energy of combustion based on pure gases: hydrogen, methane, ethane and propane GSO 11662–2020 / GSO 11665–2020 and gaseous mixtures GSO 11904–2022 / GSO 11907–2022 with metrological traceability to GET 16–2018. However, it becomes necessary to measure the gas relative density to air with established traceability to GET 18–2014 when determining the Wobbe index.

The purpose of this research is to improve the accuracy of the pycnometer method for measuring the density of gases for further development and creation of metrological assurance in the field of measuring the Wobbe index.

In the course of the research, an analysis of existing methods for determining the gas density was performed, as a result of which the pycnometer method set forth in GOST 17310–2002, GOST 34721–2021 was taken as the basis for the developed method. The uncertainty budget of gas density measurements was estimated using the pycnometer method. It has been established that the mass determination of the gas under study makes the greatest contribution to the total uncertainty. It was decided to increase the internal volume of the pycnometer and use a modified method for determining its volume to minimize the uncertainty.

An imitator of a pycnometer with an increased volume was manufactured in an original design to solve the task of developing a modified pycnometer method for measuring the gas density. A gravimetrically produced gaseous mixture of the following composition was chosen for testing the developed method: CO2 –  40.22 mol. %, CH4 –  rest.

The theoretical significance of the results obtained lies in approbation of a modified pycnometer method to improve the measurement accuracy of such a gaseous fuel property as the Wobbe index. In the process of developing a modified pycnometer method, the measurement algorithm was tested, the density values of the studied gas were obtained, and the uncertainty budget of density measurements was estimated.

The practical significance of the results of this research will expand the possibility of establishing metrological characteristics during the metrological assurance of Wobbe index analyzers, as well as apply the developed method in future accuracy control of the measurement results of the gas relative density to air.
Insecticidal and Synergistic Potential of Three Monoterpenoids Against the Yellow Fever Mosquito, Aedes aegypti (Diptera: Cu-Licidae), and the House Fly, Musca domestica
Authors: Baker Oshneil S. , Norris Edmund J. , Burgess IV Edwin R.
Published: March 2023

With widespread resistance to a limited number of insecticides available for medical and veterinary pests, new insecticides and insecticide synergists are desperately needed in this market space. We assessed the topical toxicity of carvone, menthone, and fenchone compared to permethrin and methomyl against the yellow fever mosquito, Aedes aegypti, and the house fly, Musca domestica. We also evaluated the synergistic potential of the monoterpenoids with permethrin and methomyl. Additionally, we assessed the acetylcholinesterase inhibitory potential of each monoterpenoid compared to methomyl. While all three monoterpenoids performed relatively poorly as topical insecticides (LD50 > 4000 ng/mg on M. domestica; > 6000 ng/mg on Ae. aegypti), they synergized both permethrin and methomyl as well as or better than piperonyl butoxide (PBO). Carvone and menthone yielded synergistic co-toxicity factors (23 and 29, respectively), which were each higher than PBO at 24 h. Acetylcholinesterase inhibition did not appear to explain the toxic or synergistic effects of the three monoterpenoids with IC50 values greater than 1 mM for all, compared to the 2.5 and 1.7 µM for methomyl on Aedes aegypti and Musca domestica, respectively. This study provides valuable monoterpenoid toxicity and synergism data on two pestiferous insects and highlights potential for these chemistries in future pest control formulations.
Error Analysis Prompting Enables Human-Like Translation Evaluation in Large Language Models: A Case Study on ChatGPT
Authors: Lu Qingyu , Qiu Baopu , Ding Liang , Xie Liping , Tao Dacheng
Published: March 2023

Generative large language models (LLMs), e.g., ChatGPT, have demonstrated remarkable proficiency across several NLP tasks such as machine translation, question answering, text summarization, and natural language understanding. Recent research has shown that utilizing ChatGPT for assessing the quality of machine translation (MT) achieves state-of-the-art performance at the system level but performs poorly at the segment level. To further improve the performance of LLMs on MT quality assessment, we conducted an investigation into several prompting methods. Our results indicate that by combining Chain-of-Thoughts and Error Analysis, a new prompting method called Error Analysis Prompting, LLMs like ChatGPT can \textit{generate human-like MT evaluations at both the system and segment level}. Additionally, we discovered some limitations of ChatGPT as an MT evaluator, such as unstable scoring and biases when provided with multiple translations in a single query. Our findings aim to provide a preliminary experience for appropriately evaluating translation quality on ChatGPT while offering a variety of tricks in designing prompts for in-context learning. We anticipate that this report will shed new light on advancing the field of translation evaluation with LLMs by enhancing both the accuracy and reliability of metrics. The project can be found at https://github.com/Coldmist-Lu/ErrorAnalysis_Prompt.
Treatment of Waste Water from Li-ion Batteries Cathode Material Production: Selection of adsorbents
Authors: Ikhsanudin Muhammad Nur
Published: March 2023

Pemanfaatan karbon aktif (activated Carbon) sebagai adsorben dalam berbagai aspek penilitian mengalami peningkatan yang sangat pesat dari tahun ke tahun (Nwabanne, et al, 2011). Karbon Aktif sebagai absorben tidak lagi asing bagi kehidupan kita, pemanfaatan karbon aktif dapat kita temukan mulai dari hal yang paling kecil dalam kehidupan rumah tangga, di dunia kesehatan, dan juga di Industri- industri besar baik dalam pemisahan maupun untuk penyimpanan gas. Besarnya kebutuhan terhadap penggunaan karbon aktif sebagai absorben tidak di barengi dengan produksi karbon aktif di negeri ini. Kita masih mengandalkan negara luar sebagai pemasok kebutuhan karbon aktif, sedangkan ketersediaan bahan dasar untuk pembuatan karbon aktif di Indonesia sangat berlimpah dan tidak terjamahkan sama sekali.

Karbon aktif dapat didefinisikan sebagai bahan karbon dengan struktur amorf dan luas permukaan internal yang besar dengan tingkat porositas yang tinggi. Karbon aktif memiliki bentuk karbon mikrokristalin dan non-grafit. Bentuk non-grafit berarti terdiri dari sejumlah kecil hidrogen atau sejumlah besar oksigen dalam strukturnya. Karbon aktif memiliki kinerja tinggi dalam konduktivitas listrik, stabilitas termal yang baik, serta reaktivitas permukaan yang menjadi alasan utama karbon aktif digunakan dalam beberapa tahun terakhir.
HUBUNGAN PRESTASI BELAJAR MICRO TEACHING DAN MAGANG KEPENDIDIKAN 3 DENGAN KESIAPAN MAHASISWA MENJADI GURU
Authors: Endraningsih Hesti Tri , Akhyar Muhammad , Rohman Ngatao
Published: March 2023

This study aims at examining the effect of (1) micro teaching’s achievement on readiness to become a teacher in Mechanical Engineering Education Students class of 2014 (2) learning achievement of educational internship 3 on the readiness to become a teacher in Mechanical Engineering Education Students class of 2014 (3) the achievement of micro teaching and education internship 3 jointly on the readiness to become a teacher in Mechanical Engineering Education Students class of 2014.This research is correlational research. The population in this study were all of Mechanical Engineering Education Students class of 2014, and there are 65 students to be population. The sample size taken by simple random sampling technique, and its taken 55 students. Data collection was carried out with documentation for micro teaching’s achievement and educational internship 3, and questionnaire method for teacher readiness data. The trial instrument of readiness to become a teacher was carried out in Civil Engineering Education Students class of 2014  in 30 students.. Data analysis techniques using partial correlation and multiple linear regression. Testing and analyzing data using SPPS software version 21.0. The results show that (1) there is a significant positive relationship between micro teaching’s achievement with the readiness to become a teacher in Mechanical Engineering Education Students class of 2014; (2) there is a significant positive relationship between the achievement of educational internship 3 and the readiness to become a teacher in Mechanical Engineering Education Students class of 2014; (3) there is a significant positive relationship between the achievement of learning micro teaching and education internship 3 with the readiness to become a teacher for Mechanical Engineering Education Students class of 2014.
PENGARUH PENGGUNAAN CDI RACING DAN JENIS BAHAN BAKAR TERHADAP DAYA, TORSI, DAN KONSUMSI BAHAN BAKAR PADA SEPEDA MOTOR HONDA VARIO 110CC TAHUN 2010
Authors: Adi Irfanda , Ranto Ranto , Bugis Husin
Published: March 2023

This research is aimed to invesitage : (1) the possibility effect of CDI racing use to power, torque, and fuel consumption for 110CC of Honda Vario motorcycle produced in 2010, (2) the possibility use of fuel to power, torque, and fuels consumption for 110CC Honda Vario motorcycle produced in 2010, and (3) the possibility effect of CDI racing use and kind of fuels to power, torque, and fuel consumption for Honda Vario 110CC motorcycle produced in 2010. The method used in this research was experimental, by applying descriptive data analysis.Honda Vario110CC motorcycle produced in 2010 was as a sample of this research. The independent variables in this research are CDI racing, CDI standard, RON 88 premium, RON 90 pertalite, and RON 92 pertamax. The dependent variables are power, torque, and fuel consumption. The findings indicate: (1) There is an effect of CDI racing use to Honda Vario110CC motorcycle produced in 2010. The use of CDI racing is able to increase the power to 0,16 HP or 2%, and the torque to 0,01 N.m or 0,08%, it decreses the fuel consumption to 16 ml/km or 22 ,86%, (2) There is an effect of fuel use to Honda Vario 110CC motorcycle produced in 2010. The fuel use of RON 92 pertamax to this kind of motorcycle is able to increase the power to 0,06HP or 0,75% and the torque to 0,2 N.m or 1,74%, it reduces the fuel of consumption to 4 ml/km or 10,71%, (3) There is an effect of CDI racing use and kind of fuels to Honda Vario110CC motorcycle produced in 2010. The use of CDI racing and RON 92 pertamax for this kind of motorcycle is able to increase the power to 8,33 HP andthe torque to 11,70 N.m, with the reduction of fuel consumption to 17,33 ml/km.

 
PENGARUH PENGGUNAAN VARIASI JENIS BUSI DAN VARIASI BAHAN BAKAR TERHADAP EMISI GAS BUANG HC, CO, CO2 DAN O2 PADA SEPEDA MOTOR
Authors: Maharbudi Deno , Bugis Husin , Ranto Ranto
Published: March 2023

The purpose of this research are (1) Knowing and obtaining the results of the investigation of the effect of variations in spark plug types on exhaust emissions of HC, CO, CO2 and O2 on Beat FI 2016 motorbikes (2) Knowing and obtaining the results of investigating the effect of variations in fuel on exhaust emissions HC, CO, CO2 and O2 on Beat FI 2016 motorbikes (3) Knowing and obtaining the results of the investigation of the effect of spark plug types and fuel variations on exhaust emissions of HC, CO, CO2 and O2 on Beat FI 2016 motorbikes This research uses descriptive quantitative research with experimental research methods. Measurement of exhaust emissions in accordance with SNI 09-7118.3-2005. The population in this study was a Honda Beat FI motorcycle. The sample in this study was a Honda Beat FI motorbike in 2016. The data collection technique was using purposive sampling. The research was conducted at Dishubkominfo Surakarta city using the gaz analyzer technotest. Results of this research is (1) The use of a combination of pertalite fuels and iridium plugs generates the lowest HC rate of 118.67 ppm or a decrease of 32.58% (2) The use of pertalite fuel with platinum plugs decreases by producing the lowest CO rate of 0.487% or decrease 3.31% (3) pertamax fuel with standard plugs resulted in the lowest CO2 exhaust emission of 10.5% with a difference of 2.27 or decrease 17.75% (4) use of pertalite fuel with standard plugs capable of producing O2 exhaust gas emissions of 1.057% or the lowest.
IMPLEMENTASI PROGRAM SEKOLAH LIMA HARI (PS5H) DI SMK TERHADAP KESIAPAN KERJA SISWA
Authors: Saputro Eko , Suharno Suharno , Harjanto Budi
Published: March 2023

The objectives of this research are 1) to know the correlation between the implementation of intracuricular activities in the five-days school program at Vocational High Schools toward students’ work readiness, 2) to know the correlation between the implementation of co-curricular activities in five-days school program at Vocational High School toward students’ work readiness, 3) to know the correlation between implementation of both activities (intracuricular and co-curricular) or five-days school program in Vocational High School toward students’ work readiness. This research was conducted  in Vocational High School State 5 Surakarta. This research used a quantitative approach with a descriptive correlational research design because it is aimed to see the level of correlation between independent and dependent variables. Data collection techniques used in this research is questionnaire. Data testing techniques using simple correlation analysis techniques and multiple correlation using the SPSS application program version 25.0. Based on thefinding of the research , it can be concluded that 1) there is a positive correlation and a significant correlation between the implementation of intracuricular activities in five-days school program toward students’ work readiness as proved by the value of rcount = 0.422 > rtable = 0.174 and the significance value of 0.00 < 0.05, 2) based on that there is a positive correlation and a significant correlation between the implementation of co-curricular activities in five-days school program toward students’ work readiness as proved by value of  rcount = 0.622 > rtable = 0.174 and the significance value is 0.00 < 0.05, 3) there is a positive correlation and a significant correlation between both activities ;intracuricular and co-curricular or the five-days school program in Vocational High School toward the students’ work readiness as proved by the value of Fcount = 40.123 > Ftable = 3.07 and the significance value of 0.00 < 0.05. The finding of this research can be selected as a consideration and suggestions for the government in determining and deciding the policy.
EVALUASI PELAKSANAAN PEMBELAJARAN PEMELIHARAAN MESIN SEPEDA MOTOR KELAS XI DENGAN MODEL CIPP (CONTEXT, INPUT, PROCESS, PRODUCT) DI SMK NEGERI NGARGOYOSO
Authors: Saputri Nina Intan , Ranto Ranto , Suharno Suharno
Published: March 2023

The purpose of this research is to evaluate the implementation of motorcycle engine maintenance learning at Ngargoyoso Vocational High School. The evaluation in this study uses the CIPP model (context, input, process, product). The location of this research is in Ngargoyoso Vocational High School on learning to maintain class XI motorcycle engines with research subjects as teachers of maintenance for motorbike engines in class XI, students of class XI, and facilities. The technique of collecting data used a questionnaire that was distributed to class XI TSM A, XI TSM B, and XI TSM C and the teacher of motorcycle engine maintenance. Interview with one of the teachers, and document the final value of maintaining a XI class motorcycle engine. The validity used in this study is content validity where validation is carried out by experts. The trial of the research instrument was conducted in class XI of TSM D Ngargoyoso State Vocational School by testing the validity of using SPSS. Analysis of scores using the average to be assessed based on the assessment criteria. The results of the study show: (1) evaluation of the context (context) which includes the background of the program has been classified as good; (2) evaluation of input (input) is classified as good, input aspects include: human resources, curriculum, learning resources, and infrastructure; (3) evaluation of the process (process) which includes the process of implementing learning in classrooms and workshops is classified as good, but the aspects of the learning media used are quite sufficient so that they need to be improved. (4) Evaluation of product (product), which is the final grade of students classified as good.
PENGARUH MEDIA PENDINGIN PADA PENGELASAN BAJA S45C MENGGUNAKAN METODE PENGELASAN GAS METAL ARC WELDING TERHADAP KEKERASAN DAN STRUKTUR MIKRO
Authors: Rachmadani Rachmadani , Suharno Suharno , Saputro Herman
Published: March 2023

This study aims to determine the effect of cooling media on microstructure and hardness values on alloy steel S45C using the welding method of Gas metal arc welding (GMAW). This research is using an experimental method. The data analysis technique used is descriptive comparative. The tool used for microstructure testing is Olympus Metallurgical Microscope and hardness test using the Vickers Hardness Tester. Based on the results of the study, it can be concluded that the results of the microstructure show an increase in the structure of pearlite after welding. In raw material, ferrite structures are seen evenly but in the welding results, GMAW which has cooled by using water, air, and oil cooling media show that ferrite is reduced in each specimen, so the pearlite structure dominates. The values of hardness and microstructure in the welding results using water, oil and aircooling media show differences in the level of hardness and microstructure. Specimens with water cooling media at the Heat Affected Zone (HAZ) test point have a higher hardness level of 315.4 VHN when compared to specimens using an oil cooling medium of 268.7 VHN and air conditioning media of 177.4 VHN. Specimens with water cooling media the microstructure in the Heat Affected Zone (HAZ) section showed more pearlite which was evenly distributed compared to specimens using other cooling media, or it could be concluded that the further away from the Las area and HAZ the smaller the pearlite content. This study shows that welding using variations in cooling media changes the microstructure and influences the hardness value of the S45C steel alloy
PENGEMBANGAN EXPERIENTIAL LEARNING DENGAN METODE ELEMEN HINGGA PADA MATA KULIAH AERODINAMIKA
Authors: Wicaksono Muchlis Taufiq Anjar , Widiastuti Indah , Pambudi Nugroho Agung
Published: March 2023

The study in Aerodynamics has shifted from large theoretical curriculum into authentic learning experiences in response to the industry requirement. In addition, the development of computational methods has revolutionized the design cycle in aerodynamics. This work describes an integrated approach in an undergraduate Aerodynamics course using the Kolb’s Learning cycle. Experiential learning is incorporated in the class to provide more opportunities for students to understand the theoretical concept through experiencing the applications and impact of the concept in real life. The Finite Element Method (FEM) which is widely used in analyzing many engineering problems was integrated into the Aerodynamics theory and application to visualize changes of parameter in the design phase.  The main learning objective of the developed learning module is to apply appropriate aerodynamics models to predict the forces on and performance of a vehicle design. The module is assessed by instructor before being applied for the students in the classroom. It is considered to be an effective method for learning when lectures and computation works are integrated in a meaningful manner.   This development research is expected to be able to produce graduates who are competent in the field of design.
EFEKTIVITAS PEMBELAJARAN PROGRAM SEKOLAH LIMA HARI (PS5H) DI SMK NEGERI 1 SAWIT BOYOLALI
Authors: Candraningrum Novia Ayu , Suharno Suharno , Rohman Ngatou
Published: March 2023

The Five Day School is a learning program in schools that lasts five days a week. This is an educational innovation that aims to improve the quality of education through the effectiveness and efficiency of the use of time in school. The purpose of this program is to help students be able to share time well between academic and non-academic activities which are both very much needed for student development. This study was conducted at SMK Negeri 1 Sawit Boyolali with a qualitative methode approach as a research procedure that produces qualitative descriptive data used is descriptive qualitative data analysis techniques, because the data obtained is in the form of captions. Descriptive data analysis about the effectiveness of implementing five-day school program learning. The results showed that the implementation of PS5H learning at SMK Negeri 1 Sawit Boyolali was implemented well. Teachers of SMK Negeri 1 Sawit Boyolali have given teaching appreciation by improving their abilities and skills by paying attention to lessons in class. The use of time with the application of PS5H teaching and learning hours is carried out effectively and provides a time off on Saturdays and learning outcomes at SMK Negeri 1 Sawit Boyolali are expected to achieve teacher during the 100% targeted teaching process with a remedial target. If the remedial has not yet reached the KKM, assignments will be given until they are able to reach KKM
PENGARUH PENGGUNAAN FERRITE BEAD DAN VARIASI JENIS BUSI TERHADAP EMISI GAS BUANG CO DAN HC PADA SEPEDA MOTOR YAMAHA SOUL GT TAHUN 2012
Authors: Arafadh Reza Aji , Ranto Ranto , Bugis Husin
Published: March 2023

The purpose of this research was to determine: (1) The effect of Ferrite Bead on CO and HC exhaust gas emission on the Yamaha Soul GT 2012 motorcycles; (2) The effect of the use variations of the spark plugs type on CO and HC exhaust gas emission on the Yamaha Soul GT 2012 motorcycles; (3) The interaction of the effect of  Ferrite Bead and variations of spark plugs type on CO and HC exhaust gas emission on the Yamaha Soul GT 2012 motorcycles.This research a quantitative type using experimental methods. The data analysis technique descriptive analysis. The research was conducted at the Laboratory of the Surakarta City Transportation Office located at Jl. Menteri Supeno No.7, Manahan, Banjarsari, Surakarta. The tool for measuring CO and HC exhaust gases is the KOREA IYASAKA brand gas analyzer (TYPE AET-4000Q). The subject in this research was the  Yamaha Soul GT 2012 motorcycle. From the results of the research, it can be concluded: (1) The use of Ferrite Bead can reduce levels of CO and HC exhaust gas emission on Yamaha Soul GT 2012 motorcycle. The test results without the use of Ferrite Bead produced CO emission levels of 0.61% and HC of 122.67 ppm. Whereas in testing the use of Ferrite Bead near spark plugs obtained CO emission levels of 0.53% and HC of 101 ppm, and on testing the use of Ferrite Bead near the coil obtained CO emission levels of 0.60% and HC of 122.67 ppm; (2) The use of variations of the spark plugs type can reduce levels of CO and HC exhaust gas emission on Yamaha Soul GT 2012 motorcycle. The results of testing using Standard spark plugs (C7HSA) produce CO emission levels of 0.61% and HC of 122.67 ppm. While testing using Platinum spark plugs (CR7HGP) obtained CO emission levels of 0.59% and HC of 131.33 ppm, and testing using Iridium spark plugs (NGK CR6HIX) obtained CO emission levels of 0.60% and HC of 93.67 ppm; (3) Interaction of the use of Ferrite Bead and variations of the spark plugs type can reduce levels of CO and HC exhaust gas emission on Yamaha Soul GT 2012 motorcycle. Test results show the lowest levels of CO and HC exhaust gas emission, namely the use of Ferrite Bead near the spark plug and the use of Iridium spark plugs ( NGK CR6HIX) with the lowest exhaust gas emission results, namely 0.45% for CO and 80 ppm for HC.
PENINGKATAN KOMPETENSI PESERTA DIDIK SMK NEGERI 6 BATAM MELALUI LINK AND MATCH DENGAN DUNIA INDUSTRI DALAM BENTUK KELAS INDUSTRI
Authors: Othman Didel Vianof
Published: March 2023

This research is motivated by the backwardness of the existing curriculum in schools with the current industrial world, this problem is shown by the reality that students who graduate from SMK still have to be retrained at the company where they work so that the industrial world does not get maximum time in terms of accepting new employees This study aims to improve the competence of students through link and match the school curriculum with industry to form an industrial class in the welding engineering department. The results of this study explain that using a link and match school curriculum with industry can improve the skills of students who are already aligned with what the industry wants. It can be proven by the graduates of SMK N 6 Batam in the industrial class already working
PENERAPAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING UNTUK MENINGKATKAN HASIL BELAJAR GAMBAR TEKNIK MATERI
Authors: PURBA RIZAL WILSANDRA
Published: March 2023

This research is done in SMKN 3 Sorong about application problem based learning Of Engineering Drawings With Orthogonal Pictoral Projection For X Garde Techanical Engineering in SMKN 3  Sorong for school year 2020/2021. The aim this research to know is the influence of application problem based learning models in inproving the result of learning to the students in the subject Of Engineering Drawings With Orthogonal Pictoral Projection in SMKN 3 Sorong. The type of this research is classroom action research which is implemented in three cycles, which one cycle consists of four components, they are planning, action, observation, and reflection. Technique of data collection is use observation and test. Analysis of data it done in three stages, namely reduction presentation and draw a conclusion. Result of this research show that utilization problem based learning models can increase the result of learning students in the subject Of Engineering Drawings With Orthogonal Pictoral Projection can be seen through aspect of knowledge in first cycles by 70% increased to 95% in second cycles, and can be maintained the result of learning student in third cycles by 95%. While the result of learning to the students in aspect of skills in firsth cycle by 86,6% increased to 90,45% in second cycles, and in third cycle increased too by 91,5%.
Pengaruh Model Konstruktivistik Terhadap Pengetahuan dan Respon Siswa di Masa Pandemik COVID-19 Untuk Hasil Belajar Siswa SMK
Authors: Satrio Bayu Ciputra
Published: March 2023

Konstruktivisme menjadi pendekatan yang populer dan berkembang dalam praktik pembelajaran saat ini. Hal tersebut tidak lepas dari teori-teori mendasarinya. Penelitian ini bertujua untuk mengetahui seberapa besar pengaruh model konstrukvistik terhadap pembelajaran siswa/i di masa pandemik COVID-19 tahun ajaran 2020/2021. Subyek dalam penelitian ini adalah penelitian tindakan kelas ini adalah siswa kelas X yang berjumlah 60 siswa/i. Penelitian terdiri dari aspek perencanaan,tindakan, observasi dan refleksi. Data penelitian diperoleh dengan metode tes dan observasi. Hasil Penelitian menunjukkan bahwa nilai rata-rata siswa dalam model konstruktivisme pada kegiatan pembelajaran adalah 56%  kemampuan siswa dalam menjalankan suatu kegiatan pembelajaran dirumah. Dari hasil tersebut dapat disimpulkan bahwa siswa/i dalam pembelajaran yang dilakukan pada masa pandemik ini mengalami penurunan dalam hasil belajar siswa dan guru berperan penting untuk selalu mengembangkan dan berinovasi dalam membuat pendekatan dan kegiatan belajar mengajar yang efektif.
Pengaruh Penggunaan Step Up Voltage Dan Variasi Bahan Bakar Terhadap Konsumsi Bahan Bakar Pada Motor Honda Beat
Authors: Fillayati Ali Akbar , Wijayanto Danar Susilo , Rohman Ngatou
Published: March 2023

The purpose of this study: (1) To investigate the effect of step up voltage on fuel consumption on Honda Beat motorcycles. (2) Investigating the effect of variations in the use of pertalite and pertamax fuels on the use of step up voltage on fuel consumption on Honda Beat motorcycles. (3) Investigating the best configuration on the use of Step Up Voltage on fuel consumption on a Honda Beat motorcycle. The research method used is descriptive investigation. The data obtained from the experimental results are entered into a table displayed in the form of a graph for later analysis. The descriptive research that will be used is a comparative study. The independent variables in this study: (1) The use of step up voltage (2) Variations in the use of pertalite and pertamax fuels (3) Variations in engine speed of 1500 rpm, 2000 rpm, and 2500 rpm. (4) Voltage variations are 13.7 V, 13.9 V, 14.1 V, 14.3 V, 14.5 V, and 14.7 V. The dependent variable in this study is fuel consumption under standard conditions and those who have used step-up voltage. The control variable used was a 2013 Honda Beat motorcycle and a 50 ml measuring cup. The results of this study: (1) The use of step up voltage affects the fuel consumption of Honda Beat motorcycles in 2013 because there is a difference in fuel consumption before using step up voltage and after using step up voltage. The use of this tool has been proven to be able to reduce fuel consumption by 0.87 ml/minute at 1500 rpm, with these results, the use of step up voltage affects the combustion quality of the fuel and air mixture in the combustion chamber of a motor vehicle which becomes more perfect due to a decrease the fuel consumption of the tested motor vehicle. (2) The use of Pertamax fuel can reduce fuel consumption. The average fuel consumption produced is 6.59 ml/minute, a decrease of 2.33 ml/minute from pertalite fuel. (3) The best configuration to obtain the lowest fuel consumption is to use a step up voltage with Pertamax fuel at a voltage of 14.3 V. This configuration is the best than the other configurations, with a fuel consumption of 3.76 ml/minute at 1500 rpm.
Analisis Ketidakjujuran Akademik Pada Mahasiswa Calon Guru Kejuruan Bidang Teknik Mesin
Authors: Setyawan Hendra , Akhyar Muhammad , Widiastuti Indah
Published: March 2023

Academic dishonesty is considered as one of the disgraceful behaviors that damage the character of students. Considering the important role of teachers in preventing fraud in the learning process, teacher candidate education programs are expected to have a conducive environment to uphold academic integrity. mechanical engineering vocational. This research is a quantitative descriptive study conducted in one of the educational staff educators at a public university in Central Java. Data collection techniques using a survey instrument with a total of 117 students as respondents. The validity and reliability of the data using the help of a statistical data processing software. The results showed that the indications of academic dishonesty of vocational engineering students were 92.3% had been involved in collaborating when doing assignments, 91.5% had been involved in collaborating during exams, 85.5% had been involved in copying and pasting assignments, as much as 98.3%. Never been involved in not reporting cheating in class, opening cell phones for browsing during exams, and fake attendance. The causes of academic dishonesty of vocational engineering students are not ready to face exams, exam questions and heavy assignments, lack of firmness of supervisors, the majority of students do it, the absence of strict rules and punishments. The solution to overcome the academic dishonesty of vocational engineering students is a warning when violating, confirming the supervisor, making the majority of students stop cheating, confirming rules and punishments, making the classroom situation impossible for cheating, ensuring student readiness for exams, prohibiting carrying cell phones when exam and spaced out seats during the exam. The results of this study are expected to be used for efforts to handle and prevent academic dishonesty in teacher education in general.