bluuebunny/crossref_metadata_2025_split huggingface dataset:
Perangkat pembelajaran matematika berbasis problem-based learning pada materi sistem persamaan linear tiga variabel
Authors: Fitria Fitria , Nofriyandi Nofriyandi , Suripah Suripah , Sthephani Aulia 
Published: September 2023

Abstract This study aims to test the validity and practicality of the development of Problem-Based Learning (PBL) based mathematics learning tools on the material of a three-variable system of linear equations for class X SMA. The subjects of this student of class X SMA Negeri 1 Bunut. This type of research is development research using the ADDIE model. The methods used in data collection are interviews and questionnaires. The instrument used in this study were validation sheets and student response questionnaires. The validation result of learning tools in the form of a syllabus was 84.38% with a very valid category, 88.72% of lesson plans validation results with a very valid category, and LKPD validation results with 86.24% with a very valid category. Field trials based on student response questinnaires obtained a value of 89.44%. So, it can be concluded that the learning tools developed can be categorized as very practical. Abstrak Penelitian ini bertujuan untuk menguji kevalidan dan kepraktisan dari pengembangan perangkat pembelajaran matematika berbasis Problem-Based Learning (PBL) pada materi sistem persamaan linear tiga variabel kelas X SMA. Subjek penelitian ini adalah siswa kelas X SMA Negeri 1 Bunut yang berjumlah 26 orang. Jenis penelitian ini adalah penelitian pengembangan dengan menggunakan model ADDIE. Metode yang digunakan dalam pengumpulan data adalah wawancara dan angket. Instrument yang digunakan dalam penelitian ini adalah lembar validasi dan lembar angket respon siswa. Hasil validasi perangkat pembelajaran berupa silabus adalah 84,38% dengan kategori sangat valid, hasil validasi RPP sebesar 88,72% dengan kategori sangat valid, dan hasil validasi LKPD sebesar 86,24% degan kategori sangat valid. Uji coba di lapangan berdasarkan angket respon siswa diperoleh nilai sebesar 89,44%. Maka dapat disimpulkan perangkat pembelajaran yang dikembangkan dapat dikategorikan sangat praktis.
Brain-based learning dalam meningkatkan kemampuan berpikir kritis siswa smp
Authors: Cahyani Intan Dwi , Fathani Abdul Halim , Faradiba Surya Sari 
Published: September 2023

Abstract This research is motivated by the researcher's weakness in the low mathematical critical thinking skills of junior high school students. Researchers provide solutions to Brain Based Learning models. This research is included in the type of Classroom Action Research (PTK) which was conducted for 2 cycles. The subject of this study was class VIII with a total of 32 students. Based on the results of research and discussion of students' mathematical critical thinking skills in learning mathematics have increased. This increase can be seen from the average value of students, and the results of calculating students' Classical Absorption Capacity (DSK). Student responses to learning mathematics with the Brain-Based Learning model generally give a positive response. Student activities in learning mathematics with the Brain-Based Learning model are active. Based on the explanation above, it can be concluded that the application of the Brain-Based Learning learning model can improve the mathematical critical thinking skills of junior high school students in mathematics. Abstrak Penelitian ini dilatar belakangi dengan keprihatinan peneliti terhadap rendahnya kemampuan berpikir kritis matematis siswa SMP. Peneliti memberikan solusi model Brain Based Learning. Penelitian ini termasuk dalam jenis Penelitian Tindakan Kelas (PTK) yang dilakukan selama 2 siklus. Subjek penelitian ini adalah siswa kelas VIII dengan jumlah 32 siswa. Berdasarkan hasil penelitian dan pembahasan kemampuan berpikir kritis matematis siswa dalam pembelajaran matematika mengalami peningkatan. Peningkatan tersebut dapat dilihat dari nilai rata-rata siswa, dan hasil perhitungan Daya Serap Klasikal (DSK) siswa. Respon siswa terhadap pembelajaran matematika dengan model Brain Based Learning pada umumnya memberikan respon positif. Aktivitas siswa dalam pembelajaran matematika dengan model Brain Based Learning berjalan aktif. Berdasarkan penjelasan di atas dapat disimpulkan bahwa penerapan model pembelajaran Brain Based Learning dapat meningkatkan kemampuan berpikir kritis matematis siswa SMP dalam mata pelajaran matematika.
Kemampuan Pemahaman Konsep pada Materi Sistem Persamaan Linear Dua Variabel Ditinjau dari Perbedaan Gender Siswa SMP Kelas VIII
Authors: Pebrianti Windi , Puspitasari Nitta 
Published: September 2023

Abstract Understanding concepts has an important role in learning mathematics that will strengthen the memory of students in receiving imaginary mathematical material so it is necessary to understand the concepts first. The aim of this study is to find out how the ability of understanding the concepts of male and female students on the material of the System of Linear Equations of Two Variables of High School students of Grade VIII. The type of research used is qualitative research. Study subject of six students of SMP 3 Karangpawitan class VIII. Techniques of data collection of observations, tests, interviews, and documentation. The results of this study male and female students can meet indicators reaffirm a concept already included in a high category; indicators classify objects according to the concept of male students included in the middle category, but female pupils included in high categories; indicator present concepts in the form of mathematical representations of male pupils including the middle class, but feminine pupils already including in the high category, indicators using, exploiting and selecting specific procedures or operations of males and females including the low category; indicators apply concepts or algorithms of male and feminine students including the medium category. Abstrak Pemahaman konsep mempunyai peranan penting dalam pembelajaran matematika yang akan menguatkan ingatan siswa dalam menerima materi matematika yang bersifat imajiner sehingga diperlukan memahami konsepnya terlebih dahulu. Tujuan penelitian ini untuk mengetahui bagaimana kemampuan pemahaman konsep siswa laki-laki dan perempuan pada materi Sistem Persamaan Linear Dua Variabel Siswa SMP Kelas VIII. Jenis penelitian yang digunakan adalah penelitian kualitatif. Subjek penelitian enam siswa SMP 3 Karangpawitan kelas VIII. Teknik pengumpulan data observasi, tes, wawancara, dan dokumentasi. Hasil penelitian ini siswa laki-laki dan perempuan dapat memenuhi indikator menyatakan ulang sebuah konsep sudah termasuk kategori tinggi; indikator mengklasifikasikan objek sesuai konsepnya siswa laki-laki termasuk kategori sedang, siswa perempuan termasuk kategori tinggi; indikator menyajikan konsep dalam bentuk representasi matematis siswa laki-laki termasuk kategori sedang, siswa perempuan sudah termasuk kategori tinggi; indikator menggunakan, memanfaatkan dan memilih prosedur atau operasi siswa laki-laki dan perempuan termasuk kategori rendah; indikator mengaplikasikan konsep atau algoritma siswa laki-laki dan perempuan termasuk kategori sedang.
Implementasi prinsip aritmatika sosial dalam transaksi jual beli pedagang di sekitar kampus uin sayyid ali rahmatullah tulungagung
Authors: Lisan Lilis Fashihatul , Risnawati Linda , Setyawan Bagus Wahyu 
Published: September 2023

Social arithmetic is an important mathematical material in improving science because it is used in everyday life in the economic field. Social arithmetic aims to facilitate the transaction process between sellers and buyers, and minimize fraud and corruption from a transaction. The method used in this research is a descriptive qualitative method that takes research subjects from the results of observations at five traders around the campus. From the results of these interviews, there are several cases with different implementations of social arithmetic. Based on the results of the study, it can be concluded that the implementation of social arithmetic principles in the sale and purchase transactions of traders is an interaction between sellers and buyers, namely buying and selling transactions. In this case, the price of the food has been determined, and the buyer only needs to mention the name of the food to be ordered and the seller determines the selling price. There is a case where the price of the food is not specified, and the buyer needs to mention how much money to order. Proving that the seller provides several payment methods, which can be scanned and cash. And there are also sellers who replace the change with two candies because there is not enough money back. Aritmatika sosial adalah materi matematika yang penting dalam peningkatan ilmu pengetahuan karena digunakan dalam kehidupan sehari-hari di bidang ekonomi. Aritmatika sosial bertujuan untuk memudahkan proses transaksi antar penjual dan pembeli, dan meminimalisir adanya penipuan dan korupsi dari suatu transaksi. Metode yang digunakan dalam penelitian ini adalah metode kualitatif deskriptif yang mengambil subjek penelitian dari hasil pengamatan di lima pedagang sekitar kampus. Dari hasil wawancara tersebut, terdapat beberapa kasus dengan implementasi aritmatika sosial yang berbeda. Berdasarkan hasil penelitian, maka dapat disimpulkan bahwa implementasi prinsip aritmatika sosial dalam transaksi jual beli pedagang terdapat interaksi antara penjual dan pembeli yakni transaksi jual beli. Pada kasus tersebut harga dari makanannya sudah ditentukan, dan pembeli hanya perlu menyebutkan nama makanan yang hendak dipesan dan penjual yang menentukan harga jualnya. Terdapat kasus tersebut harga dari makanannya tidak ditentukan, dan pembeli perlu menyebutkan berapa nominal uang untuk memesan. Membuktikan bahwa penjual menyediakan beberapa metode pembayaran, yaitu bisa dengan scan dan cash. Dan terdapat juga penjual yang menggantikan kembaliannya dengan dua buah permen karena tidak adanya uang kembali yang cukup.
Kemampuan pemahaman konsep matematis peserta didik kelas v pada materi akar pangkat tiga
Authors: Hasanudin Hasanudin , Maryati Iyam 
Published: September 2023

Understanding the concept is a very important aspect in learning, because students understand the concept so they can develop their abilities in each subject. The aim of the research is to analyze students' ability to understand mathematical concepts. The method applied in this study was descriptive method. The research subjects were fifth grade students. The instrument used in this research was a test of students' mathematical concept understanding ability, which totaled 4 questions according to indicators of students' understanding of mathematical concepts. After data collection, the researcher analyzed the results of working on the ability to understand mathematical concepts and the results of the interviews to see the ability to understand students' mathematical concepts. Based on data analysis, it can be concluded that the ability to understand mathematical concepts in class V students at SDIT PERSIS Tarogong is still low, as evidenced by the presence of errors in solving mathematical comprehension ability questions, especially on indicators of using, utilizing, choosing certain procedures or operations and applying concepts or problem-solving algorithms in cube root material.Pemahaman konsep merupakan suatu aspek yang sangat penting dalam pembelajaran, karena siswa memahami konsep maka mereka dapat mengembangkan kemampuannya dalam setiap mata pelajaran. Tujuan penelitian adalah menganalisis kemampuan pemahaman konsep matematis siswa. Metode yang diterapkan dalam penelitian ini yaitu metode deskriptif Subjek penelitiannya adalah siswa kelas V. Instrumen yang digunakan dalam penelitian ini adalah tes kemampuan pemahaman konsep matematis siswa yang berjumlah 4 soal sesuai dengan indikator pemahaman konsep matematis siswa. Setelah pengumpulan data, peneliti menganalisis hasil pengerjaan soal kemampuan pemahaman konsep matematis dan hasil wawancara untuk melihat kemampuan pemahaman konsep matematis siswa. Berdasarkan analisis data dapat disimpulkan bahwa kemampuan pemahaman konsep matematis siswa kelas V SDIT PERSIS Tarogong masih rendah yang dibuktikan dengan terdapatnya masih ada kesalahan menyelesaikan soal kemampuan pemahaman matematis terutama pada indikator menggunakan, memanfaatkan, memilih prosedur atau operasi tertentu dan mengaplikasikan konsep atau algoritma pemecahan masalah dalam materi akar pangkat tiga.
Kesulitan belajar matematika pada mahasiswa pgsd
Authors: Evi Lidia , Febrianti Lusia Mimi , Imron Ilmawati Fahmi 
Published: September 2023

Difficulty in learning mathematics is a condition where there is a deviation between the actual abilities possessed and the achievements shown which are manifested in three basic academic areas such as reading, writing and arithmetic. The purpose of this study was to determine students' difficulties in learning mathematics and the factors that cause difficulties for students in learning mathematics. This type of research is research using a qualitative approach, which is a process of research and understanding based on a methodology that investigates a difficulty in learning mathematics. The data collection technique uses a questionnaire. The subjects of this study were ten students of PGSD UNP Kediri. Based on the results of the study, the learning difficulties factor for students consisted of 5 factors, namely factors of low basic mathematical ability, the factor of not paying attention to the explanation of the material properly, the factor of drowsiness, the factor of not like learning Mathematics, the factor of playing HP when learning takes place, and time factor. Kesulitan belajar matematika adalah suatu kondisi terjadinya penyimpangan antara kemampuan sebenarnya dimiliki dengan prestasi yang ditunjukkan yang termaniferstasi pada tiga bidang akademik dasar seperti membaca, menulis, dan berhitung. Tujuan dari penelitian ini adalah untuk mengetahui kesulitan siswa dalam belajar matematika dan faktor-faktor yang menimbulkan kesulitan bagi siswa dalam mempelajari matematika. Jenis penelitian ini adalah penelitian dengan menggunakan pendekatan kualitatif, yang merupakan suatu proses penelitian dan pemahaman yang berdasarkan pada metodologi yang menyelidiki suatu kesulitan dalam pembelajaran matematika.Teknik pengumpulan data menggunakan kuisioner. Subjek penelitian ini adalah 15 mahasiswa PGSD UNP Kediri. Berdasarkan hasil penelitian faktor kesulitan belajar mahasiswa terdiri dari 6 faktor yaitu: Faktor kemampuan dasar matematika rendah, Faktor tidak memperhatikan penjelasan materi dengan baik, Faktor mengantuk, Faktor tidak menyukai pembelajaran Matematika, Faktor bermain HP saat pembelajaran berlangsung, dan Faktor waktu/jam.
Social phobia among Al Qadissya medical student: prevalence, Academic performance and response to different treatments
Authors: Alkhafji Abdul Zahra M. 
Published: September 2023

Background: Social phobia (SP) is an inappropriate anxiety; experienced in social situations in which the person feels observed by others and could be criticized by them so he/she attempts to avoid such situations.Objectives: This study aims to identify the prevalence of (SP) among the medical students, as well as the socio- demographic characters will be investigated.The effect of (SP) on the students that is; their academic performance and the response to different type of treatments.Methods: Three hundred eighty students of both genders were selected randomly from Al-Qadissia Medical College in Al- Diwania city. These students were interviewed using the International Diagnostic Checklist of ICD.10 Social Phobia. The academic performance of subjects meeting a diagnosis of (SP) was studied. Their response to selective serotonin reuptake inhibitor (Fluoxetine) and comprehensive cognitive behavioral therapy were evaluated.Results: The result showed that the prevalence of (SP) among the medical student is (12.6 %). female students had higher rates than males (17.4%, 7.9%) respectively. positive family history of any psychiatric disorder was found more in students having (SP) . Eating or speaking in public appeared to be the most common feared situations avoided by the diagnosed students. (SP) appeared to have no effect on the students academic performance. Both treatment (Fluoxetine, Comprehensive Cognitive Behavioral Therapy) had good response (48%, 52.8%) respectively.Conclusions: Significant differences are found between the rate of SP and different sexes. SP appeared to have no effect on the students academic performance. Both active treatments had good response; in addition they have nearly equal result.
Urinary tract infection in Hemodialysis patients with renal failure
Authors: Manhal Falah S. , Mohammed Ammer A. , Ali Kais H. 
Published: September 2023

Background: Urinary tract infections (UTIs) are common in dialysis patients, are associated with increased rate of complications, and may be difficult to diagnose due to often subclinical presentation.Objectives: To examine theprevalence of urinary tract infections in hemodialysis patients with renal failure, and to evaluate the diagnostic accuracy of pyuria as a screening test in hemodialysis patients.Patients and Methods: A total of forty hemodialysis patients (27 males and 13 females) with renal failure were selected according to the study criteria. Clean-catch mid-stream urine specimens were obtained from study patients, their urinalysis and bacterial culture were performed according to standard techniques. Bacteriuria is defined as detection of  105 cfu/ml of a single microorganismin culture of urine specimens.Pyuria is defined as the presence of 10 neutrophils per high power field of voided mid-stream urine.Results: Urine from 25(62%) patients had no significant organism growth, whereasurine from 15(37%) patients grew  105 cfu/ml; 6 patients had been infected with E. coli, 5 patients with Klebsiella spp., one patient with Acinetobacter, one patient with α-hemolytic Streptococci, one patient with coagulase negative Staphylococci, and one patient with Proteus spp.. Fourteenout of 40 (35%) patients had pyuria and only 9 (64%) out of 14 patients had a positive urine culture for infection. The sensitivity and specificity of pyuria screening for UTI was 60% and 80%, respectively. The positive and negative predictive values are 64% and 77%, respectively.Conclusions: The result of this study demonstrates that pyuria was a good marker for significant bacteriuria in these patients. Cultural techniques are needed for susceptibility testing of bacterial isolates to guide antimicrobial therapy. The antimicrobial susceptibility tests in this study revealed that Amikacin, Gentamicin, Ceftazidime, Cefoxitin, and Imipenem act well on isolated bacteria.
The infection with HBV and HCV and their relationship to ABO blood group among blood donors
Authors: Aljooani Omar A. A. , Al-Hayani Noor N. , Mohammed Mahmood J. 
Published: September 2023

Background: Hepatitis B virus (HBV) and C virus (HCV) known to be transmitted through blood and blood products and has been implicated as a major cause of chronic liver disease and hepatocellular carcinoma worldwide.Objective: This study aim to detect the relationship between the HBV and HCV infections with ABO blood groups and age of blood donor in Al- Ramadi city.Patients & Methods: We conducted Hepatitis B surface antigen test strip (ACON Laboratories) (USA) and HCVAb, as step to detect the infections among blood donors at the laboratories for central blood bank in Alanbar health directory, M.O.H. The results of this study were analyzed statistically using the T-test to find the significance of probability level according to SPSS ver12 program. (P) Value < 0.05 were considered significant.Results: Among (430) volunteer blood donors, there were 71(16.511%) positive for HBs Ag and 12(2.790%) for HCVAb. Hepatitis B and C infections were significantly associated with blood group of the donors; percentage of HBs Ag and HCVAb were found to be higher in donors who has blood group O and lowest in blood group AB donors, while the distribution of Rh in hepatitis infected donors was higher among Rh positive donors. HCV infections show a high percentage at age group (26–35) years old, while the percentage of HBV infections increase with progress of age group among blood donors.Conclusion: There were a significant association between blood group of donors and hepatitis infections and the infections of HCV increase among (26-35) years old blood donors while the HBV infections increase with progress of age groups.
Evaluation of signs of immune or metabolic disturbances among diabetic patients with positive islet cell antibodies
Authors: Ibrahim Dezayee Zhian M. , Waheda Nabeel E. , Said Al- Salihi Sabria M. 
Published: September 2023

Background: Autoantibodies to islet cell antigens are known predictors of type 1 diabetes and detected in latent autoimmune diabetes in adults.Objectives: This study aimed to identify the metabolic and immunological disturbances in diabetic patients with positive and negative islet cell antibodies (ICAs)Materials and methods: A total number of 235 known cases of diabetes mellitus type 1 (160) and type 2 diabetes (75) were admitted in the study. Serum ICA and immunoglobulins (IgA, IgM, IgG) as well lipid profile were measured.Results: Positive ICAs was found in 40 out of 120 T1D (33.3%) and 28 out of 75 T2D (37.3%). All the patients were poorly controlled diabetes with the evidence of significant high HbA1c%. There were no significant differences in the lipid profile or immunoglobulin levels between positive and negative ICAs in T1D and T2D.Conclusions: Autoimmunity in term of positive ICA does not play a role in metabolic or immunologic disturbances that associated with T1D and T2D.
Increased content and uniformity of enzyme-induced calcite precipitation realized by prehydrolysis and an accelerated injection rate
Authors: Zhu Chenhao , Li Zhiqing , Zhang Zhongjian , Zhang Yu , Zhou Yingxin , Wang Jianhong 
Published: September 2023

The utilization of enzyme-induced calcium carbonate precipitation (EICP) to consolidate aeolian sand has received significant attention in recent years. When EICP was used and cementing solution was injected in stages, the calcium carbonate content and uniformity were not improved simultaneously. A method is proposed to alleviate this problem by pre-reacting urea and urease before injecting the cementing solution and speeding up the injection rate. Experiments were designed to compare staged injections of EICP-cemented aeolian sand with and without the use of prehydrolysis and with different injection rates. The results show that 1) at the same injection rate, the content of calcium carbonate in the prehydrolysis samples after 12 injections was 66.1% higher than that in the samples without prehydrolysis. 2) When using prehydrolysis, the calcium carbonate content as a function of the injection rate decreased in the following order: 10 mL/min &gt;15 mL/min &gt;7.5 mL/min. The highest amount of calcium carbonate was generated at an injection rate of 10 mL/min and was mainly distributed on the surface. The calcium carbonate generated with an injection rate of 15 mL/min was uniformly distributed in the sand. These results indicate that the method could improve the efficiency of calcium carbonate generation and distribution uniformity, and could also be applied to form a hard crust on the surface of sandy soil or for reinforcing sandy soil by multiple injections.