bluuebunny/crossref_metadata_2025 huggingface dataset:
Trainer PLC Omron CP1E Sebagai Media Pembelajaran Pada Mata Pelajaran Sistem Pengendali Elektronik di SMKN 4 Kota Serang
Authors: Permata Endi , Fatkhurrokhman Mohammad , Putri Deasy Fajriani
Published: November 2022

Tujuan  penelitian  ini  adalah untuk melihat peningkatan hasil belajar siswa dengan menerapkan media pembelajaran Trainer PLC OMRON dan software CX-Programmer pada mata pelajaran SistemPengendali Elektronik kelas XII Jurusan Teknik Elektronika Industri SMK Negeri 4 Kota Serang. Penelitian ini menggunakan metode Research and Development dalam bidang pendidikan, bertujuan mengetahui unjuk kerja, tingkat kelayakan Trainer PLC OMRON dan software CX-Programmer sebagai media pembelajaran. Hasil dari penelitian ini berupa media pembelajaran yang dapat menunjang proses pembelajaran dan praktikum materi PLC. Hasil dari Tingkat kelayakan media trainer mendapatkan skor 54,6 dengan nilai SBX = 42 maka rentan skor kategori yang didapat adalah “Sangat Layak”, dan tingkat kelayakan materi mendapatkan skor 70,3 dengan nilai SBx = 54 maka rentan skor yang didapat adalah “Sangat Layak”. Tingkat efektivitas media trainer mendapatkan hasil yang sangat signifikan. Hasil penilaian rata-rata siswa pada saat sebelum melakukan pembelajaran dengan trainer dan jobsheet mendapatkan hasil 42,78 dan hasil setelah menggunakan trainer dan jobsheet 80,08, dan diperoleh skor 0,65 pada uji n-gain sebagai tingkat efektivitas trainer di SMKN 4 Kota Serang.
Effectiveness of Innovative Learning Media To Improve Counting Ability In Early Childhood
Authors: Widiastuti Yulianti Tri , Kirono Rejo
Published: November 2022

The learning element that must be considered is the learning media. One way that teacher can do is to use learning media that can attract children's attention so that the ability to count will accompany it. One of the learning media that can be used is the busy book learning media. The Busy Book is made of flannel with bright and varied colors and is safe for children in daily activities. Learning media that is quite interesting for children, especially at the age of 5-6 years is busy book learning media. The purpose of this study was to determine the effectiveness of busy book learning media to improve numeracy skills in early childhood. The research was conducted through experiments to 16 students in Class B. The data was collected through an oral counting test. The data analysis technique was carried out through a difference test with the Wilcoxon Signed Rank Test. The results showed that there was a significant difference in the students' counting ability before after the implementation of learning using busy book media. These results indicate that the use of innovative learning media is effective in increasing numeracy skills at an early age. Keywords: learning media, innovative learning, counting ability
Hubungan Tujuan Lulus Tepat Waktu Terhadap Self Regulated Learning (SRL) Pada Mahasiswa Fakultas Kedokteran Umum Universitas Malahayati Angkatan 2018
Authors: Puji Lestari Sri Maria , Triwahyuni Tusy , Utari Elitha Martharina , Nurjanah Siti
Published: November 2022

SRL is an individual process to achieve goals or targets, by managing and improving themselves (Manab 2016). With the support of a good SRL can encourage success that occurs especially for adolescents in the process of growth and development, a good SRL can improve student / teen achievement (Jantz 2011). According to Zimmermen and Pons, SRL has three factors, personal, behavioral, and environmental. One of the main factors of personal factors is the goals. To determine the correlation between the goals of graduating on time and self regulated learning (SRL) among sophomores in medical faculty of Malahayati University.A quantitative research with analytic design and cross sectional design and samples were collected by using accidental sampling. Data were evaluated with SPSS. The total sample of 122 students with moderate on-time graduation goals were 116 respondents (95.1%) . The students with high SRL were 62 respondents (50.8%). Statistical analysis using the Pearson test showed a p-value of 0.018 with a correlation test of +0.214. The goals of graduating on time with self-regulated learning in sophomores of Medical Faculty of Malahayati University are correlated. With low correlation power and positive correlation direction, the higher the goal of graduating on time, the higher the SRL, the goal of graduating on time affects the SRL by 4, 6%.
Hubungan Antara Pola Asuh Demokratis Orang Tua Dengan Keterampilan Sosial Pada Siswa Di Sekolah Dasar
Authors: Dewi Nurmala , Qohar Abd. , Ulpa Eska Prawisudawati
Published: November 2022

Low social skills make children less able to establish good interactions and choose aggressive actions. The low attitude of social skills is that it is difficult to control oneself well, and it is difficult to empathize and it is difficult to interact with others. Social skills are skills in interacting, communicating, and cooperating between humans and other humans. Social skills are very important for every child to have to form a quality relationship with the environment, because a child who has good social skills can express or communicate ideas or ideas so that others can understand what is being conveyed. The existence of social skills in children cannot be separated from parenting patterns, one of which is democratic parenting. Democratic parenting is parenting that emphasizes the needs of children, but does not hesitate to control them.The subjects used in this study were students in grades V and VI at Madrasah Ibtidaiyah Al Fatah, East Lampung, with a total sample of 50 respondents who were taken using purposive sampling technique. The data collection method in this study used a social skills scale consisting of 26 items ( = 0.853 ) , a democratic parenting style scale consisting of 14 items ( = 0.776 ) . The data analysis technique in this study used the Pearson product moment correlation technique.The results of data analysis obtained a value of rxy = 0.671 with a significant level of 0.000 (p 0.005), this indicates that there is a positive and significant relationship between students’ social skills and democratic parenting of parents. The effective contribution given by the democratic parenting style variable to the social skills variable is 45.01 %.Keywords: Social Skills, Democratic Parenting, Studentss Primary School.
Pengaruh Penggunaan Gadget Terhadap Perilaku Beragama Pada Siswa Sma Negeri X Pontianak
Authors: Purwanti Dwi Surya , Istiqomah Istiqomah
Published: November 2022

This research is motivated by the phenomenon where all behaviors seen through gadgets would be likely imitated by children. The purpose of this study was to analyze: (1) the use of gadgets in students of SMA Negeri X Pontianak. (2) Religious behavior in SMA Negeri X Pontianak students. (3) The effect of using gadgets on religious behavior in SMA Negeri X Pontianak students. This study is a quantitative study with a student population of SMAN X Pontianak. The sampling technique used refers to the Slovin formula and a sample of 60 students is obtained. Data collection techniques using interviews, observation, documentation and questionnaires. While the data analysis techniques used are instrument analysis, descriptive analysis, and causal relationship analysis. The results of data analysis show that the use of gadgets by students of SMA Negeri X Pontianak is in the high category with an average score of 92.5. Moreover, it is known that the religious behavior of the students of SMA Negeri X Pontianak is in the low category with an average score of 45.32. Finally, it is known that the contribution of gadget use to religious behavior in SMA Negeri X Pontianak students is 12.8%, while the rest is influenced by other variables outside this study.Keywords: Use of gadgets, Religious Behavior
Hubungan Intimate Friendship Dan Motif Diversi Dengan Pengungkapan Diri Pada Mahasiswa Pengguna Instagram
Authors: Syafitri Nyimas Nabila , Islamia Intan
Published: November 2022

Self-disclosure is an activity to convey information about oneself to others who are considered close and need at least one other person. One of the factors that influence self is intimate friendship and diversity of motives. This study aims to determine the relationship of friendship and diversion motives with self in students using Instagram. The hypothesis in this study is the relationship between intimate friendship and diversion motives with self in students. The population in this study were students of the Islamic Psychology Study Program, UIN Raden Intan Lampung. The sampling technique used is purposive sampling. The sample in this study amounted to 90 respondents.The measuring instrument used is the self scale, intimate friendship scale and motive diversion scale. The analysis technique used is multiple regression with the help of JASP software ver 0.16.0.0 for windows. The results of the study can be seen from the value of R = 0.514 and the value of F = 15.585 with a significance of p 0.001 and an effective contribution of 26.4%, which means that there is a significant relationship between intimate friendships and self-diversion motives for students using Instagram. Then the value (rx1-y) -0.344 and p 0.001, the effective contribution is 13.20%, so there is a negative and significant relationship between intimate friendships with oneself in students with. The value (rx2-y) is 0.343 and p 0.01, a contribution of 13.13%, so there is a positive and significant relationship between the diversion motive and self-effectiveness in students. Keywords: Intimate friendship, Diversion Motive, Self Disclosure
Adaptasi Alat Ukur Psikologi Motivation Achievment Inventory Dengan Metode Confirmatory Factor Analysis (CFA)
Authors: Isnaini Nurul
Published: November 2022

This study measured 32 items of achievement motivation variable in an undimensional manner which was adapted from Muthee and Thomas (2009) into Indonesian language and culture by involving peer review to reduce the effect of bias. The procedure for adapting measuring instruments through the stages proposed by Beaton et al. (2000), the first stage is translation. The first translator is mastered in English and the second translator had competence in the field of Psychology and English. Second, is the synthesis of the translation results, back translation, and a committee review of experts. Questionnaires were distributed to 102 MA Darussunnah students, Ciputat, South Tangerang. All items were analyzed using Confirmatory Factor Analysis (CFA). The results showed that 32 items were undimensional. This means that all items only measure one factor, so the one-factor model contained in the Motivation Achievement Inventory can be accepted. Of the 32 items, there were 15 items that were invalid, so they were dropped. That is, only 17 items that measure the achievement motivation variable.Keywords: Motivation Achievement Inventory, Adaptation, Confirmatory Factor Analysis (CFA).
Hubungan Antara Self Compassion Dan Peer Group Influence Dengan Subjective Well-Being Pada Mahasiswa Yang Mengikuti Pembelajaran Daring
Authors: Setiani Mefta , Malay Mohammad Nursalim , Fitriani Annisa
Published: November 2022

The latest policy in the world of education regarding teaching and learning activities that switched to using the online system since the covid-19 pandemic, become a challenge for various groups, including students. Previously research found the relationship and the role of self-compassion for subjective well-being in students but not yet been research in-depth related to subjective well-being in students who are undergoing online learning and there is not much-related research on the role of the independent variable peer group influence on subjective well-being on students. The purpose of this study is to analyze the relationship between self-compassion and peer group influence on the subjective well-being of students who take online learning.This research was conducted on 135 respondents from the Faculty of Ushuluddin and Religious Studies at UIN Raden Intan Lampung. Method data collection used in this study using the SWLS (Satisfaction with Life Scale) scale of 13 items (á = 0.844) and the PANAS scale (Positive and Negative Affect Schedule) as many as 13 items (á = 0.937) to measure the level of subjective well-being, and a self-compassion scale of 17 items (á = 0.909) and the peer group influence scale of 8 items (á = 0.779). The analysis technique used is multiple regression analysis with JASP software help vers.15.The results of the data analysis show:1. The results of hypothesis testing with an R-value of 0.647 and an R Square of 0.419, which means the variance of the capable subjective well-being explained by self-compassion and peer group influence is 0.419 or a percentage of 41.9% while the rest explained by other things not examined in the study.2. The results of the correlation test of the self-compassion variable with the Pearson value correlation 0.602 p 0.001 which means partially self. variable compassion has a relationship with subjective well-being.3. The test results on the independent variable peer group influence found the value of Pearson correlation 0.392 p 0.001, this means partially variable peer group influence has a relationship with subjective well-being. Keywords: Peer Group Influence, Self Compassion, Subjective Well-Being
Morality over Pleasure Principle: A Psychological Study of Biblical Character Samson and Senior Pazhuvettaraiyar in Kalki's Ponniyin Selvan
Authors: Sofiya W.M. Roselin , Dunston Dr. G. M. Joseph
Published: November 2022

In this article, the researcher endeavours to compare and critique the characters of Biblical Character       Samson and Senior Pazhuvettaraiyar from Kalki’s Ponniyin Selvan in the light of Sigmund Freud’s three components of mind- Id, Ego and Super-ego. By applying the psychoanalytic theory, the present study brings out the internal conflicts in the select characters. This article primarily focuses on a) witnessing both of the character’s behavioural responses, such as changes in attitudes, actions in life events, pursuit of love,  which has been taken for psychological investigation, b) analysing the morality over pleasure principle, which makes the characters significant in the readers' minds. The present study has hypothesized how the instinctual drive of 'Id' becomes the major cause of Senior’s suicide in an open court. It also investigated how the life and death drives of the Id function in Samson’s suicide are discussed. The character investigation   in the above backdrop will bring a different aspect to appreciate Kalki's masterpiece by attaining ‘Catharsis’ in readers' minds. The scope of this study is to understand the interchanging of the masks of each character, representative of the interactions of the different personality levels, that provides the reader with insight into who each character truly is. This psychological approach     will help the reader identify each individual's personality by their actions.
PERAN DAN KUALITAS DOSEN PEMBIMBING DALAM PENYELESAIAN TUGAS AKHIR MAHASISWA PERBANKAN SYARIAH
Authors: Lemiyana Lemiyana , Septiatin Aziz
Published: November 2022

Penelitian ini bertujuan untuk mengetahui peran dan kualitas pengawas dalam menyelesaikan tugas akhir mahasiswa program studi Perbankan Syariah FEBI UIN Raden Fatah Palembang. Penelitian ini menggunakan metode survei. Variabel yang digunakan dalam penelitian ini adalah peran, kualitas supervisor dan penyelesaian tugas akhir. Hasil penelitian menunjukkan bahwa (1) peran supervisor berpengaruh terhadap penyelesaian tugas akhir (2) kualitas supervisor berpengaruh terhadap penyelesaian tugas akhir mahasiswa
PENGEMBANGAN MODUL DIGITAL AKUNTANSI UNTUK SISWA KELAS XI AKUNTANSI SMKN 1 JEMBER
Authors: Ginanjar Sahrul , Tiara Tiara , Kantun Sri
Published: November 2022

Penelitian ini bertujuan menghasilkan produk pembelajaran berupa modul digital yang menarik dan efektif pada KD pencatatan persediaan barang dagang secara perpetual untuk siswa Kelas XI Akuntansi SMKN 1 Jember. Model pengembangan yang digunakan dalam penelitianini yaitu model pengembangan Borg dan Gall. Uji coba skala kecil dilakukan pada 9 siswa kelas XI Akuntansi 3 dan uji coba skala besar dilakukan 36 siswa kelas XI Akuntansi 1 sebagai kelompok eksperimen dan 34 siswa kelas XI Akuntansi 2 sebagai kelompok kontrol. Teknik analisis data yang digunakan yaitu uji tingkat daya tarik modul digital dan uji tingkat efektivitas modul digital. Hasil uji tingkat daya tarik modul digital pada uji coba skala kecil yakni 85,40% (sangat menarik) dan uji coba skala besar yakni 87,62% (sangat menarik). Modul digital juga dinyatakan efektif berdasarkan hasil uji beda antara kelas eksperimen dan kelas kontrol yakni Sig (2- tailed)=0,00<0,05 yang menunjukkan perbedaan yang signifikan antara kedua kelompok tersebut. Hasil dari uji tingkat daya tarik dan uji efektivitas menyatakan modul digital terbukti lebih menarik dan lebih efektif digunakan dalam pembelajaran pada KD pencatatan persediaan barang dagang secara perpetual. Pengembangan Modul digital ini diharapkan dapat membantu pembelajaran jarak jauh akibat pandemi Covid-19
PENGARUH AUDIT EKTSTERNAL DAN AUDIT FEE TERHADAP AUDIT FRAUD
Authors: Hizkia Russel , Siagian Harlyn L.
Published: November 2022

kadang dalam aporan keuangan terjadi salah pencatatan ( human error ) dan kecurangan. Kecurangan sendiri datang dari oknum yang tidak bertanggung jawab. Dalam penelitian ini memiliki tujuan untuk memberikan keyakinan yang akan melaporkan laporan keuangan sehingga kejadian baik ( penipuan ). Sampel yang diperoleh dari dua perusahaan, yaitu PT. Melchor Indonesia dan PT. Sistem Paket Indonesia . Metode pengumpulan data yang digunakan adalah angket atau kuesioner. Sedangangkan metode dalam pengolahan data atau analisis data menggunakan convenience sampling.hasil Berdasarkan yang didapat bahwa nilai dari audit fee dan audit eksternal mempengaruhi nilai audit fraud.
PENGEMBANGAN GAME EDUKATIF “NOMIC SMART” BERBASIS ANDROID SEBAGAI MEDIA PEMBELAJARAN KELAS X SMA
Authors: Afianti Eka Olifia , Ratnawuri Triani , Pritandhari Meyta
Published: November 2022

Media pembelajaran adalah segala sesuatu yang digunakan untuk menyampaikan informasi dalam proses pembelajaran. Perkembangan media pembelajaran di era revolusi industri 4.0 dapat memudahkan proses pembelajaran dari segi efektivitas dan efesiensi, salah satunya media pembelajaran berbasis teknologi android. Hasil prasurvei pada guru dan peserta didik kelas X IPS SMA Negeri 2 Metro diketahui bahwa media pembelajaran yang digunakan guru belum bisa menarik minat belajar peserta didik. Maka diperlukan media pembelajaran yang dapat digunakan kapan saja dan dimana saja untuk semua peserta didik dan juga untuk mengikuti perkembangan teknologi, yaitu media pembelajaran berupa pengembangan aplikasi yang dapat digunakan peserta didik yaitu pengembangan media pembelajaran Game  Edukatif “Nomic Smart” Berbasis Android. Tujuan dari pengembangan ini adalah menghasilkan aplikasi media pembelajaran Game Edukatif “Nomic Smart” Berbasis Android yang valid dan praktis. Model pengembangan yang digunakan adalah model 4-D yang meliputi: define, design, development, dan disseminate. Berdasarkan hasil penelitian menujukan bahwa game edukatif “nomic smart” berbasis android pada mata pelajaran ekonomi layak untuk digunakan dalam proses pembelajaran. Hasil validasi ahli media dengan rata-rata presentase 95,3% kriteria sangat kuat, ahli materi dengan rata-rata presentase 96% dengan kriteria sangat kuat. Hasil uji coba produk kepada peserta didik dengan rata-rata presentase 97,6% kriteria sangat kuat. Berdasarkan rekapitulasi tersebut dapat disimpulkan bahwa media pembelajaran game edukatif “nomic smart” berbasis android merupakan media pembelajaran yang sangat layak dan praktis dalam proses pembelajaran.
PPENGEMBANGAN MEDIA PEMBELAJARAN FISIKA MOBILE LEARNING BERBASIS ANDROID PADA MATERI GELOMBANG BUNYI DAN CAHAYA
Authors: Milinia Gebby , Trisna Silvi , Yanti Iing Rika
Published: November 2022

Penyebaran Covid-19 yang terjadi di Indonesia membuat proses pembelajaran dilakukan dari jarak jauh. Teknologi dapat menjadi alat dalam proses pembelajaran jarak jauh. Namun materi yang disampaikan masih berupa media elektronik tanpa penjelasan langsung dari pendidik. Sehingga dikembangkan sebuah media pembelajaran mobile learning berbasis android untuk mendukung proses pembelajaran jarak jauh. Metode yang digunakan adalah metode Research and Development (R&D) dengan tahapan model pengembangan ADDIE (Analyze, Design, Develop, Implement, Evaluate). Instrumen penelitian yang digunakan dalam penelitian ini adalah lembar validitas yang diisi oleh 3 validator dan lembar kepraktisan yang diisi oleh satu orang pendidik dan 37 siswa. Hasil yang diperoleh dari penelitian ini adalah media yang dikembangkan dikategorikan sangat valid dengan persentase 88. 05% berdasarkan aspek rekayasa perangkat lunak, aspek desain pembelajaran dan aspek komunikasi visual. Media yang dikembangkan juga dikategorikan sangat praktis dengan persentase 83,49% berdasarkan aspek kenyamanan, daya tarik dan efisiensi.
Difficulty Analysis of Solving HOTS Problems on Harmonic Vibration Using Heller Troubleshooting
Authors: Gracia Elsiaulavita , Maria Haratua Tiur , Hidayatullah M. Musa Syarif
Published: November 2022

This research was conducted with the aim of knowing the types and causes of difficulties experienced by students in solving HOTS questions on harmonic vibration material. This research is a qualitative descriptive study. The study was conducted at SMA Negeri 10 Pontianak with a total sample of 44 people. Data collection techniques are giving HOTS test questions and interviews to students of class XI science. Data analysis is done by reducing data, presenting data, and making conclusions. experiences experienced by students in accordance with Heller's problem solving. Based on the results of the study, it is known that the factors causing students to be less than optimal in solving HOTS questions (1) difficulty visualizing problems caused by students not understanding the questions, and lack of habituation to rotate the questions. the problem in the question becomes an image; (2) lack of ability to understand the problem; (3) lack of understanding of the concept; (4) errors in the physical description stage and the solution plan stage, students do not know the concepts used in the problem, and do not master arithmetic operations; (5) students are in a hurry and are less thorough in completing and checking answers. The average percentage of difficulties experienced by students is 85.17% with a very high category.
IMPLEMENTASI MODEL DISCOVERY LEARNING UNTUK MENINGKATKAN KEMAMPUAN LITERASI SAINS SISWA KELAS XI MAN 2 HALMAHERA UTARA
Authors: Hi Rahman Mardia , Latif Saiful , Saban Mariana M
Published: November 2022

Literasi sains merupakan instrument bagi siswa guna melatih kemampuan berpikir ilmiah siswa dalam usaha mengatasi masalah dalam kehidupan sehari-hari. Penggunaan model discovery learning mampu meningkatkan kemampuan literasi sains. Kemampuan literasi sains dapat dikembangkan atau dimunculkan pada diri siswa saat proses pembelajaran dengan menggunakan berbagai model dan strategi pembelajaran yang memungkinkan untuk hal tersebut. Salah satu  model yang diharapkan dapat meningkatkan kemampuan literasi sains siswa adalah model discovery learning. Model discovery learning sesuai tujuan penggunaannya diharapkan dapat membantu siswa melatih kemampuan berbagi pengetahuan yang dimiliki dan menggunakan idenya untuk memecahkan masalah yang dipelajari. Penelitian ini dilaksanakan di Madrasah Aliyah Negeri 2 Halmahera Utara pada siswa kelas XI IPA-1 dengan jumlah siswa sebanyak 27 siswa. Jenis penelitiannya adalah penelitian deskriptif kuantitatif. Instrumen yang digunakan untuk memperoleh data kemampuan literasi sains adalah soal-soal tes yang sesuai dengan materi atau konsep yang diajarkan dan disesuaikan dengan indikator literasi sains. Analisis data dilakukan dengan analisis deskriptif dan inferensial. Berdasarkan hasil analisis data diperoleh kemampuan literasi sains siswa kelas XI  pada aspek konten meningkat sebesar 22,22 %, aspek proses atau kompetensi meningkat sebesar 29,63%,  dan aspek konteks meningkat sebesar 25,93%. Hasil analisis dengan menggunakan N-Gain untuk melihat peningkatan kemampuan literasi sains siswa menunjukkan bahwa secara rata-rata kemampuan literasi sains siswa berada pada kategori sedang yaitu sebanyak 81,48 %, kategori tinggi 11,11% dan kategori rendah 7,41 %. Dari hasil tersebut dapat dikatakan bahwa penggunaan model discovery learning dapat meningkatkan kemampuan literasi sains siswa kelas XI IPA MAN 2 Halmahera Utara.
PROFIL PENINGKATAN HASIL BELAJAR PRAKTIKUM FISIKA DARING TOPIK HUKUM BOYLE UNTUK MAHASISWA POLITEKNIK NEGERI BANDUNG
Authors: Rasagama I Gede
Published: November 2022

Physics practicum KBM during the COPID-19 pandemic is unavoidable so that in its implementation certain efforts are needed. Activities carried out for determine the impact of the online Boyle-law practicum that has been designed, about increasing mastery of concepts, increasing ability to work on reports, and perceptions of students' difficulty level with concepts and practical assignments. The research was conducted using a quasi-experimental method and a one group pre-test post-test design. As research subjects were 32 D4 students of POLBAN Energy Conservation Engineering Study Program. The results showed that the online Boyle-law practicum was able to significantly increase the mastery of Boyle-law concepts, from an average score of 33.13 to 46.56 in the low category, and the ability to do reports from an average score of 58.27 to 75.02 in the medium category. The difficulty level of concepts and practical assignments is perceived, each with an average score of 2.68, the category is close to sufficient and the average score is 2.58, the category is close to sufficient.
PROFIL AWAL KEMAMPUAN PCK (PEDAGOGICAL CONTENT KNOWLEDGE) DAN KOGNITIF CALON GURU PADA PEMBELAJARAN FISIKA MODERN
Authors: Mulhayatiah Diah , Sinaga Parlindungan , Rusdiana Dadi , Kaniawati Ida , Oktapiyani Ovi
Published: November 2022

Guru adalah komponen paling penting dalam pembelajaran. Sehingga seorang guru dituntut mempunyai kemampuan pedagogik dan menguasai materi (content). Kedua kemampuan tersebut sering dipadukan menjadi pengetahuan baru yang disebut Pedagogical Content Knowledge (PCK). Oleh karena itu, penelitian ini dilakukan dengan tujuan untuk mengetahui profil awal kemampuan PCK dan kognitf mahasiswa calon guru Fisika. Metode yang dilakukan dalam penelitian ini adalah kualitatif deskriptif dengan instrument test pilihan ganda untuk menganalisis serta mendeskripsikan profil awal kemampuan PCK dan kognitif calon guru fisika pada pembelajaran fisika modern. Subyek penelitian ini adalah mahasiswa Prodi Pendidikan Fisika Semester genap 2022/2023 yang berjumlah 25 orang. Berdasarkan penelitian dapat disimpulkan bahwa dalam beberapa indikator, pengetahuan pedagogi mahasiswa calon guru masih lemah dan perlu adanya peningkatan khususnya dalam menentukan strategi pembelajaran yang tepat. Terkait pengetahuan konten fisika modern, mahasiswa masih banyak mengalami miskonsepsi yang ditunjukan dari nilai rata-rata indikator hampir semua rendah
Reduction of COD and TOC concentration in pharmaceutical wastewater using Fe2+ catalyzed ozone: Full-scale case study
Authors: Pedreros Calvo Camila , Valderrama López Kelly Viviana , Agudelo Valencia Rafael Nikolay , Pérez Cortés Karina , Campo Carlos Enrique
Published: November 2022

This work was carried out to improve the performance of an ozonation system used for wastewater treatment in a pharmaceutical industry. In order to improve the mineralization of organic matter, ferrous sulfate was applied as a catalyst to the reaction system. After this, the pH of the water was adjusted to 8.5–10, so that the process is carried out under alkaline conditions. Finally, O3 was injected through a Venturi tube in order to improve the mass exchange between gas and water. Preliminary operating data indicate that the treatment system achieves chemical oxygen demand (COD) removals of less than 10%. The tests were conducted at full scale and the water quality variables were analyzed at different reaction times. It was determined that for an ozone dose equal to 10 g/h and 10 mg/L Fe2+ and an initial water pH equal to 9, 4.5 hours were required to achieve a reduction of 30.73% COD and 36.85% total organic carbon (TOC). The results obtained with an initial pH higher than 9.5 indicate that the effectiveness of the process is reduced, a fact that may be caused by the rapid formation of insoluble Fe(OH)3, which decreases the availability of the catalyst for the formation of OH* radicals in the water.
Research progress on the influence of forest fire on the eco-stoichiometric characteristics of carbon, nitrogen and phosphorus in forest ecosystem
Authors: Sun Long , Dou Xu , Hu Tongxin
Published: November 2022

Forest fire can change the eco-stoichiometric characteristics of forest ecosystem elements, reflect the biogeochemical cycle change mode of forest ecosystem environment after fire, and clarify the eco-stoichiometric characteristics of carbon (C), nitrogen (N), phosphorus (P) in forest ecosystem under forest fire disturbance, which is very important for understanding the response mechanism of forest ecosystem to forest fire disturbance. By consulting a large number of relevant literatures, the author summarized and analyzed the impact mode of forest fire disturbance on the C–N–P eco-stoichiometric characteristics of forest ecosystem, as well as the impact of forest fire disturbance on the C–N–P eco-stoichiometric characteristics of plants, C–N–P eco-stoichiometric characteristics of litter, and C–N–P eco-stoichiometric characteristics of soil. It is considered that the C–N–P eco-stoichiometric characteristics of forest ecosystem are mainly affected by fire factors (fire intensity, fire frequency, recovery time after fire), vegetation types and soil properties. In view of the scientific problems that forest fire urgently needs to be solved in the study of forest ecosystem eco-stoichiometry, three aspects: the impact mechanism of forest fire disturbance on the homeostasis of plant eco-stoichiometry, the study of multi-element eco-stoichiometry under forest fire disturbance, the establishment of the eco-chemometrics relationship of the plant–litter–soil composite system under the interference of forest fire are proposed, in order to deeply understand the plant regulation strategy under the interference of forest fire, clarify the mutual coupling mechanism between multiple chemical elements after the interference of forest fire, and improve the relationship between the input and output of aboveground and underground nutrients with the plant–litter–soil as a composite whole, which is of great significance for a deep understanding of the nutrient cycle and balance of the forest ecosystem under the background of global climate change, and reasonable formulation of forest fire management measures.
Optimal Distributed Generation Allocation in Distribution Systems with Non-Linear Loads Using a New Hybrid Meta-Heuristic Algorithm
Authors: Milovanović Miloš , Radosavljević Jordan , Perović Bojan
Published: November 2022

This paper presents a new hybrid meta-heuristic algorithm based on the Phasor Particle Swarm Optimization (PPSO) and Gravitational Search Algorithm (GSA) for optimal allocation of distributed generation (DG) in distribution systems with non-linear loads. Performance of the algorithm is evaluated on the IEEE 69-bus system with the aim of reducing power losses, as well as improving voltage profile and power quality. Results, obtained using the proposed algorithm, are compared with those obtained using the original PSO, PPSO, GSA and PSOGSA algorithms. It is found that the proposed algorithm has better performance in terms of convergence speed and finding the best solutions.
Legendre Orthonormal Functions Based Model Predictive Control of DC Motor
Authors: Dubravić Amila , Hasić Anel
Published: November 2022

The paper presents modelling and control of very common actuator, DC motor. The control of the DC motor was implemented with the Model predictive control (MPC) controller based on Legendre orthonormal functions. As PID (Proportional-Integral-Derivative) controller is simple and effective controller, mainly used in industrial applications, above mentioned MPC controller’s performance was compared to the PID controller performance. A criterion used is the fastest response with the maximum of 2% overshoots with step input and step disturbance treated.
A Comprehensive Study of Shape Orientation Methods for Extraction of Phase-Preserving Fourier Descriptors
Authors: Sokić Emir , Salihbegović Almir , Konjicija Samim
Published: November 2022

The magnitude-based Fourier descriptors (FD) are frequently used in shape-based image retrieval, due to their efficiency and effectiveness. Unlike the phase-preserving Fourier descriptors, the magnitude-based Fourier descriptors are inherently invariant under rotation and starting point change, but they discard all valuable information contained in the phase of the Fourier coefficients (FCs). In order to preserve the coefficients’ phase, the orientation and starting point of the shape must be determined. In this paper, we conducted a comprehensive evaluation of different state-of-the-art methods for determining nominal shape orientation, which can be used to extract phase-preserving Fourier descriptors: the point of maximal radius, the axis of least inertia (moments), the phase of the first harmonic, the cross-correlation, the Procrustes distance and the pseudomirror points. The methods were compared in terms of sensitivity to non-rigid transformations, retrieval performance, computational complexity and computational time. The experimental results give insight into the pros and cons of all analyzed methods.
Behavior of Reinforced Concrete Beams Containing Waste Crushed Concrete and Bricks
Authors: Abuzaid Esraa Kh. Mohsin , Al-Bayati Jawad K. , Mohammed Mohammed Hashim
Published: November 2022

Recycling demolition waste materials as construction materials offers environmental as well as economic benefits by protecting virgin materials and reducing overall costs of project. This paper presents an experimental investigation on flexural behavior of reinforced concrete beams made with coarse aggregate fully 100 % or partially 50 % replaced by crushed concrete or crushed bricks as waste materials in full or half depth of beams. Nine beams are tested over a simply supported span, one with full natural aggregate as reference and the others with waste aggregate in different ratios and depths (four with crushed concrete and four with crushed bricks). Results show that the structural behavior of beams with waste aggregates is similar to the reference beam with strength reduction of 3 – 20 %. Crushed concrete beams show higher strength and stiffer behavior (in general) than crushed bricks. Also, increasing replacement ratio from 50 % to 100 % or replacement depth from half to full reduced strength by about 10 % only which encourage utilizing maximum quantity of waste construction materials in concrete structures.
Experimental Investigation on Mechanical Properties of Lightweight Aggregate Concrete
Authors: Kumar A. Dattatreya , Poluraju P. , Kasagani Hanuma
Published: November 2022

This present research work mainly focusses on an investigation of the workability and strength properties of lightweight aggregates, particularly Palm oil shell and pumice aggregate, used in the production of concrete with (PA) and (POS), which were substituted for conventional Hard Broken Stone (HBG) coarse aggregate. Through the use of lightweight aggregate (POS and PA) in place of some of the coarse aggregate, the properties of a lightweight concrete M30 have been concentrated in this experimental study. The lab tests that were conducted include the compaction factor test, Schmidt Hammer test (rebound hammer test), and compressive strength. A total of 108 numbers of cube specimen were employed of size 2400 kg/m3. As part of a parametric study, the total number of cube specimens was divided into two groups according to various percentages: palm oil shell and pumice aggregate. In order to cast the cube specimens, dry weight of coarse aggregate was substituted for 0, 10 %, 20 %, 30 %, 40 %, and 50 % of POS and PA lightweight aggregate, respectively. A total of 9 cube specimens were cast and tested for 3, 7, and 28 days after successful curing in order to obtain accurate results. Average values were obtained from the test program and are shown in the corresponding Tables. Slump, compaction factor, rebound hammer compressive strength, and compressive strength values with different amounts of light aggregate were used to assess how well concrete performed when coarse aggregate was partially replaced with light aggregate. The test findings revealed that when the amount of conventional aggregates substituted by POS and PA increased, the slump test, compaction factor test, and strength of the lightweight aggregate concrete (LWAC) rapidly diminished. With an increase in the amount of aggregates replaced by POS and PA, the LWAC’s absorption has gradually increased as water. It is stated at the outset that the POS has shown to perform better than the PA when construction is done using structural lightweight concrete.
Evaluation of the Playing Time Benefits of Foreign Players in the Big-5 European Football Leagues
Authors: Zhang Hui , Jiang Junxian
Published: November 2022

To explore the benefits that foreign players bring to their clubs, this study used foreign players in the Big-5 European leagues (2013/2014-2017/2018 seasons) as samples and constructed a benefit model based on playing time and game points to evaluate the contribution of foreign players to their clubs in different leagues. The results showed the following: 1) from the 2013/2014 season to the 2017/2018 season, foreign players in the Bundesliga had the highest playing time benefits (PTBs) (0.526 ± 0.012), followed by foreign players in La Liga (0.523 ± 0.014), the Premier League (0.518 ± 0.011), Serie A (0.500 ± 0.012) and Ligue 1 (0.486 ± 0.011); 2) foreign players from South America had the highest PTBs in the Big-5 leagues, while those from Africa had the lowest PTBs. However, among the different leagues, there were no significant differences in the PTBs of foreign players from the same continent; 3) PTBs of foreign players in the forward position were lower than those of foreign players in the defender position; 4) the country that produced foreign players in the Big-5 leagues with the highest total PTBs was Brazil, followed by Argentina, Spain and France. Additionally, the top 15 countries by total PTBs qualified for either the 2014 or the 2018 World Cup Final.
Experience of academic staff in mentoring programs
Authors: Żuchowski Ireneusz , Casalino Nunzio , Murat Bartosz
Published: November 2022

Mentoring programs developed at universities are an effective method of supporting student development. The participation in these programs brings them many benefits. These benefits include increased prestige in the community, gaining new experiences and achieving defined goals in the case of universities. It is essential to improve the mentoring programs implemented at universities. This article presents the results of research carried out within the framework of the BEGIN project implemented and funded under the Erasmusplus program. The aim of the research was to identify academic staff's experiences of participating in formal and informal mentoring programs. Ten in-depth interviews were conducted with respondents from Italy, Poland and Germany. A purposive selection method was used. The research provided clues with a practical dimension on how to implement mentoring programs, usefulness from the student's point of view, effectiveness and efficiency, and how to measure the impact of the program on students.
Psoriasis-Related Stigma: Is There More to Uncover?
Authors: Decean Luminita , Badea Mihai , Ilies Roxana , Sasu Andreea , Rus Victoria , Mihai Adriana
Published: November 2022

Background: Psoriasis is a common, inflammatory immune-mediated dermatosis, occurring in patients of all ages, sexes, and races, associating significant comorbidities. One such comorbidity is represented by psychological disorders, which negatively influence the clinical course of the disease. The purpose of our study is to offer a first glimpse into the stigmatization of Romanian psoriasis patients, as well as their potential anxious or depressive manifestations.

Materials and methods: The present study is based on an adapted questionnaire previously used to estimate stigmatizing attitudes in the general population, mirrored to reflect the patients’ experience in social situations such as shaking hands, maintaining friendship, kissing, or intercourse. GAD7 and PHQ8 scales were used to screen for anxiety or depression traits in the same patients.

Results: Our study group consisted of 12 psoriasis patients, with a mean age of 46.75 years. While few patients reported feeling discriminated against in social contexts, 16.66% presented with mild depressive symptoms recorded by PHQ8 and 24.99% presented mild anxiety manifestations according to their GAD7 scores.

Conclusion: In spite of the small sample group, our study outlines a tendency for depressive and anxious manifestations in patients with psoriasis.
The Circadian Axis and Cardiometabolic Syndrome
Authors: Varga Boglárka , Ionescu Cristian Norbert , Szabo Monica Iudita Maria
Published: November 2022

Circadian rhythm refers to the daily physiologically fluctuating patterns of systemic processes that occur within a circa 24-hour timeframe, independently of external factors. There is evidence that in time, external and internal cycle misalignment leads to severe health consequences, resulting in the development of cardiometabolic disturbances. Desynchronized hormonal fluctuations along with daily specific macronutrient utilization patterns are also discussed, which by consequence, are all predictors of metabolic syndrome. The aim of this paper is to provide insight on the circadian clock’s organization throughout the human body and to explain the underlying genetic background. By understanding these well-established molecular mechanisms and processes, we believe this paper will provide accuracy regarding the importance of the circadian clock’s integrity and will highlight its role in the etiopathology of cardiometabolic syndrome.
On the construction of the elementary trigonometric functions
Authors: Medvegyev Péter
Published: November 2022

The article discusses the construction of the elementary trigonometric functions. It discusses several approaches, but the main message is that to construct the trigonometric functions one needs to follow the same approach as one should use during the construction of the real exponential function, but one should use complex numbers. The key point is that one must construct the complex square root function to define the trigonometric functions on the binary numbers and then one should use some convexity argument to prove their differentiability. This approach, as the power series approach, based on the intimate relation between the trigonometric and the exponential functions.
Monitoring of population systems
Authors: Varga Zoltán , López Inmaculada , Gámez Manuel
Published: November 2022

This is a selected overview of a research line initiated and mostly developed by the three authors over the last three decades. Applying the state space paradigm of Mathematical Systems Theory, monitoring means that from the observation (a transform) of an unknown state process, the latter should be recovered. Since most of the dynamic models of population biology are nonlinear, for solving the monitoring problem, tools of nonlinear analysis are applied in different contexts. This approach to monitoring has found different applications ranging from population ecology to radiotherapy, from stock estimation in fisheries to monitoring of solar thermal heating systems.
Determination of material quality by methods of thermal analysis
Authors: Vončina Maja , Hvala Gregor , Medved Jožef , Žužek Borut , Petrič Mitja
Published: November 2022

Abstract in English

Cast aluminium alloys are commonly used in the automotive industry for casting applications. There are both primary and secondary/recycled aluminium alloys in the market, which differ in price and quality. In this study, the effect of alloy quality on solidification, microstructure and mechanical properties was investigated. The comparison of properties was carried out in the as-cast condition and in the heat-treated condition. The influence of alloy quality on solidification was analysed by simple thermal analysis and differential scanning calorimetry, and thermodynamic simulations. The basic mechanical properties analysed were tensile strength, yield strength, elongation, and hardness. The microstructural differences were analysed using a light microscope. The Mn:Fe ratio, which is strongly influenced by the alloy quality, was found to have a pronounced effect on the mechanical properties, while magnesium together with silicon hardens the aluminium matrix during heat treatment, which significantly increases the mechanical properties. This research proved that thermal analysis methods can give us a necessary and important indication of the quality of the alloys used.
Stability and Analysis of Vibrations Bifurcation Based on Dynamic Modeling of a Solar Titan 130 Gas Turbine
Authors: Alaoui Merouane , Iratni Abdelhamid , Alshammari Obaid S. , Hafaifa Ahmed , Colak Ilhami , Guemana Mouloud
Published: November 2022

This work is interested in studying the vibrations’ stability in gas turbines, compared to a dynamic model of the Jeffcott rotor, the parameters of the gas turbine will be estimated for the purpose of developing a mathematical model which points out the behavior of the turbine rotor in virtue of the data of actual vibration measurements. The addition of the geometric nonlinearities of the vibrations unveils a supercritical Hopf bifurcation, the unstable modes are repulsed towards a stable limit cycle of small radius. The vibration measurements and analyzes were performed on a gas turbine Solar TITAN 130 type mounted in a gas compression station in Djelfa, Algeria. The turbine was in the operating mode when the vibration parameters were read. Bifurcation monitoring bounds the specific operating ranges, extracts efficiently the dynamic behavior core of the studied turbine and consequently affords a new approach to efficiently dimension the turbine rotor.
Comparison of Multi-Criteria Decision Making Methods Using The Same Data Standardization Method
Authors: Dung Hoang Tien , Do Duc Trung , Nguyen Van Thien
Published: November 2022

The ranking results of the alternatives are heavily influenced by the decision making method, data normalization method, and calculation method for criterion weights. In this study, five multi-criteria decision-making methods were compared: MABAC, COCOSO, MAIRCA, VIKOR, and ROV. All of these methods use the same data normarmalization method. The weights for the criteria were determined using four methods: Equal, ROC, RS, and Entropy. In two different examples, the combination of multi-criteria decision-making methods with weighting methods for ranking alternatives is demonstrated. In each example, the number of options and the number of criteria are also different. The results in both examples show that regardless of the weighting method, multi-criteria decision-making methods always determine the same best solution. Furthermore, the direction of future research has been mentioned in the final section of this paper.