bluuebunny/crossref_metadata_2025_split huggingface dataset:
Detection of feature-poor, small sized objects on noisy images
Authors: Storcz Tamas , Ercsey Zsolt 
Published: November 2021

Abstract
Visual identification of objects is an important challenge today. Main target of frequently applied methods is to identify or classify complex objects. These methods are far less effective when objects are small and less complex, and thus less descriptor features are on hand. The main reason for this is that these features can significantly change on object occlusion or appearance of noise.
The presented solution performs identification of simple, small (size is 17 × 13 pixels) objects with elliptical shape. High pass filtered normalized cross correlation is used for region of interest detection and a simple deep neural network is used for classification of selected regions. The proposed method detected objects on a noisy image with accuracy of 96.2%.
Compressive, flexural and splitting strength of fly ash and silica fume concrete
Authors: Shmlls Maysam , Bozsaky Dávid , Horváth Tamás 
Published: November 2021

Abstract
Cement replacement materials are commonly used in concrete technology. Several researchers have examined high-performance concrete after adding mineral admixtures to it, but further studies are still needed to provide the optimum dosage of these materials for instance fly ash and silica fume. This study compares three types of concrete and the mechanical properties (compressive strength, flexural strength, and splitting tensile) of these types at the age of 28 and 90 days. The test results designate that adding the mineral admixtures commonly affects the mechanical properties of all the tested types. However, silica fume is more operative than fly ash. Furthermore, adding the fly ash and silica fume in the same concrete type slightly improves the mechanical properties.
SEMA3A protects against hyperoxia-induced lung injury in a bronchopulmonary dysplasia model of newborn rat by inhibiting ERK pathway
Authors: Liang Zhenyu , Zhang Xiao , Liu Yingxian , Wu Qianmei , You Chuming 
Published: November 2021

Background Hyperoxia induces lung injury through lung inflammation in premature infants, leading to bronchopulmonary dysplasia (BPD). Semaphorin 3A (SEMA3A) participates in diverse biological processes, including cell migration, angiogenesis, and inflammation. The effect of SEMA3A on hyperoxic lung injury of neonatal rats with BPD was investigated in this study.
Methods Neonatal rats with BPD were established through hyperoxia treatment. Hematoxylin-eosin staining was used to evaluate histopathological analysis in lung tissues. SEMA3A expression was assessed by reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and western blot assay. Adeno-associated virus (AAV)-mediated over-expression of SEMA3A (AAV-SEMA3A) was administrated into hyperoxia-induced rats, and apoptosis was evaluated by TUNEL staining. Levels of inflammatory cytokines were investigated by enzyme-linked-immunosorbent serologic assay (ELISA).
Results Hyperoxia-induced histopathological changes in lung tissue reduced alveolar number and enhanced alveolar interval and alveolar volume. SEMA3A was downregulated in lung tissue of hyperoxia-induced rats. AAV-SEMA3A injection attenuated hyperoxia-induced cell apoptosis in lung tissues by increasing Bcl-2 and decreasing Bax and cleaved caspase-3. Moreover, the enhanced levels of Interleukin (IL)-1β, monocyte chemoattractant protein (MCP)-1, and tumor necrosis factor-α (TNF-α) in hyperoxia-induced rats were restored by AAV-SEMA3A injection by the downregulation of nuclear factor kappa B (NF-κB) phosphorylation. AAV-SEMA3A injection also ameliorated histopathological changes in lung tissues of hyperoxia-induced rats by increasing the number of radial alveolar count and decreasing the volume of mean linear intercept. Besides, the protein expression levels of extracellular signal-regulated kinase (ERK) and c-Jun N-terminal kinase (JNK) phosphorylation were reduced in hyperoxia-induced rats post-AAV-SEMA3A injection.
Conclusion Ectopical expression of SEMA3A suppressed hyperoxia-induced apoptosis and inflammation in neonatal rats, and ameliorated the histopathological changes through inactivation of ERK/JNK pathway.
Assessment of Dental Arch Parameters in Turkish Twins
Authors: Birant Sinem , Koruyucu Mine , Kasimoglu Yelda , Veznikli Mert , Seymen Figen 
Published: November 2021

Background: The aim of this study is to investigate the relative contributions of genetic and environmental factors to variations in dental dimensions in a sample of Turkish twins, and to estimate heritability using dental casts. Study design: The study samples were selected from the twin children between 3–15 years old who referred for their first dental examination. Fifty nine monozygotic and one hundred and forty three dizygotic twin pairs were examined in the study. The alginate impression material used to create the plaster model of maxilla and mandible. Anterior arch width, posterior arch width, arch length and arch circumference were measured on models prepared from measurements taken for both maxilla and mandible with digital caliper. The similarities and differences of the measurements were compared between pairs of twins and zygocytes. Morever, the effects of bad oral habits, bruxism, a result of psychosocial factors on measurements were examined. Statistical analysis was performed using Paired T Test, Wilcoxon Test and Mann Whitney U test.
Results: A total of 404 dental models of 118 (29.2%) monozygotic and 286 (70.8%) dizygotic twins were evaluated. There was no statistical difference between sibling pairs in both monozygotic and dizygotic twins. The measurement similarity between twin siblings differed according to zygosity in all measurements (p&lt;0.05). It has been observed that the finger sucking and mouth breathing affect the dental arch measurements (p&lt;0.05). Conclusion: These results indicate that the differences in dental arch dimensions between monozygotic twin pairs are less than the difference between dizygotic twin pairs.
The Return of Typhoid Mary? Immigrant Workers in Nursing Homes
Authors: Milczarek‐Desai Shefali , Sklar Tara 
Published: November 2021

AbstractNursing homes are dependent on immigrant, female labor as nursing aides, yet these workers are provided with minimal employment benefits, which has led to devastating consequences for vulnerable, older residents during COVID‐19. Emerging research suggests that aides are contributors to the increase in coronavirus outbreaks due to working in multiple long‐term care facilities and refer to these individuals as “superspreaders.” Specifically, aides have been tied to unwittingly passing on the virus as they may be asymptomatic or pressured to work by employers while symptomatic with limited access to paid sick leave. The plight of these women harkens back to “Typhoid Mary”—also a poor, immigrant woman who was accused of spreading typhoid fever a century ago. This article applies lessons learned from Mary's shocking and tragic trajectory, then employs critical race theory and feminist jurisprudence to highlight examples of structural and institutional disparities that exist in current paid sick leave laws. Recommendations call for improved oversight in delivery of quality and safety in long‐term care by addressing racial, gender, and economic inequalities through paid sick leave laws coupled with strong enforcement.
Comparison of Post Operative Pain Score between Doppler-Guided Hemorrhoidal Artery Ligation and Recto Anal Repair with Open Hemorrhoidectomy on Internal Hemorrhoid Grade III-IV at Siloam Hospitals Lippo Village
Authors: Sudirman Taufik , Kosasih Joanna Audricia 
Published: November 2021

<div class="WordSection1"><p><strong>Background:</strong> Hemorrhoids are a common lesion affecting 5% of the general population. Open hemorrhoidectomy has been considered a gold standard. However, this method has a significant score of postoperative pain Because of this side effect, another alternative method to treat hemorrhoids has been invented which can reduce post-operative pain. One of these methods is doppler-guided hemorrhoidal artery ligation and rectoanal repair (DGHAL-RAR). This study aims to know the comparison of the postoperative pain score between doppler-guided hemorrhoidal artery ligation and rectoanal repair compared with open hemorrhoidectomy.</p><p><strong>Method:</strong> The sample population of this study is internal hemorrhoid grade III-IV patients at Siloam Hospitals Lippo Village from 2018-2020. Visual analog scale data are taken from medical records. Sample data is obtained using a consecutive sampling method until 64 samples are met. The data obtained will be processed with the Mann U-Whitney test.</p></div><div class="WordSection2"><p><strong>Results:</strong> Incidence of postoperative pain more than VAS 3 occurred in DGHAL- RAR and open hemorrhoidectomy is 81,3% and 96,9% with a p-value of 0,104. The average score of Visual Analogue Scale score in DGHAL-RAR and open hemorrhoidectomy are 1,97 and 3,13 with a p-value of 0,001.</p><p><strong>Conclusion:</strong> This study shows that the comparison of pain scores in DGHAL-RAR and open hemorrhoidectomy is not statistically significant. The mean score of the Visual Analogue Scale Score in the DGHAL-RAR group is statistically significantly lower than the mean score in the open hemorrhoidectomy group.</p></div><strong><br clear="all" /></strong>
DIURETICS EFFECT OF SALAK (Salacca zalacca) SEED EXTRACT TO KIDNEY HISTOPATHOLOGICAL STRUCTURE OF THE WISTAR MALE RATS (Rattus norvegicus)
Authors: Oktarianti Rike , Septiana Nur Aisyah , Lelono Asmoro 
Published: November 2021

Salak seed are used as natural diuretics, it's contain secondary metabolites i.e alkaloids, flavonoids and tannins. Diuretics are compounds that can increase the rate of excretion of urine volume and increase the excretion of mineral salts in the urine. The study was to determine the diuretic effect of salak seed extract on the histopathological structure of the kidney. Salak seed extract was made by maceration method using 70% ethanol and then evaporated. Rats were divided into 4 treatment groups, negative control and 3 treatment groups with the administration of salak seed extract for 7 days orally at a dose of 0.28g/kg body weight, 0.56g/kg body weight and 1.12g/kg body weight. The results showed that the treatment of salak seed extract orally for 7 days could increase urine volume. The treatment of dose 1.12g/kg body weight had highest diuretic effect as indicated by the volume of urine produced 5.00 ml. The treatment salak seed extract had no effect on creatinine and urea levels. The all treatment doses of salak seed extract had no effect on the kidney histopathological structure, i.e it was not effect on glomerular diameter or did not cause atrophy of kidney glomerular.
Examining the Factors Contributing to Fintech Peer-to-peer Lending Adoption
Authors: Sunardi Rudy , Suhud Usep , Purwana Dedi , Hamidah Hamidah 
Published: November 2021

Background: Peer-to-peer (P2P) lending platform is one of key disruptive business models in financial technology. It bridges lenders and borrowers directly. Researchers have studied the leverage mechanism behind the P2P lending platform.Objective: This research proposes an enhanced technology acceptance model (TAM) to investigate how consumers embrace P2P lending platforms using quality of service and perceived risk as drivers of trust.Methods: This research uses structural equation modeling (SEM) to test the hypothesised connections between the latent variables.Results: The findings show that users' trust, perceived usefulness, and perceived ease of use in P2P lending platforms significantly influence attitudes towards adoption. Meanwhile, consumers' perceived risk in using P2P lending platforms is unaffected by the quality of service.Conclusion: The estimated model is consistent with the results shown in previous studies. The findings of the current research are useful for fine-tuning platform marketing plans and putting strategic goals into actions. For future research, we suggest including more variables to better understand the adoption intention of P2P lending platforms.Keywords: Adoption intention, Peer-to-peer lending, Structural equation modeling, Technology acceptance model
Pemahaman Konsep Awal Mahasiswa Pendidikan Fisika Terhadap Materi Benda-Benda Langit dalam Perkuliahan Astrofisika
Authors: Ariska Melly , Akhsan Hamdi , Muslim Muhammad , Azizah Siti Nur 
Published: November 2021

Penelitian ini bertujuan untuk menganalisis pemahaman konsep awal pra-perkuliahan mahasiswa program studi pendidikan fisika FKIP Universitas Sriwijaya yang akan mengikuti perkuliahan astrofisika. Metode yang digunakan dalam penelitian ini adalah metode deskriptif yaitu mengidentifikasi pemahaman konsep awal materi benda-benda langit pada mata kuliah astrofisika. Topik benda benda langit merupakan salah satu topik yang dibahas dalam perkuliahan astrofisika yang merupakan perkuliahan pilihan wajib pada program studi pendidikan fisika. Penelitian ini menggunakan tes diagnostik dua tingkat yang terdiri dari opsi pertanyaan dan opsi alasan. Sampel penelitian yaitu 22 (dua puluh dua) mahasiswa yang akan mengikuti perkuliahan astrofisika. Penelitian ini menghasilkan bahwa pemahaman konsep awal tentang benda-benda langit yang dimiliki oleh mahasiswa sebelum perkuliahan diberikan cenderung heterogen. Pemahaman yang tepat tentang materi benda-benda langit masih beragam dengan pemahaman yang tidak tepat maupun hanya bersifat tebakan. Tergambar bahwa lebih banyak mahasiswa dengan pemahaman yang tidak komprehensif dibandingkan dengan yang pemahaman konsep yang tepat. Hasil penelitian yang berupa gambaran pemahaman konsep awal mahasiswa ini bisa diimplikasikan oleh pengampuh mata kuliah astrofisika untuk menentukan teknik pembelajaran inovatif yang akan digunakan selama pembelajaran agar mahasiswa bisa memperbaiki pemahaman konsep awal yang belum tepat. This study aims to understand the initial pre-lecture concept of students of the physics education program, FKIP Sriwijaya University, who will take astrophysics lectures. The method used in this study is a descriptive method to identify the understanding of the initial concept of celestial objects in the astrophysics course. Celestial bodies are topics discussed in astrophysics lectures, which are compulsory elective courses in physics education study programs. This study uses a two-level diagnostic test consisting of question options and reasonable options. The research sample is 22 (twenty-two) students who will take astrophysics lectures. This study showed that the initial concept of celestial objects that students had before the lecture was given tended to be heterogeneous. The correct understanding of the material of the celestial bodies is still diverse with an incorrect understanding or only guesswork. It is illustrated that more students have an incomplete understanding than those with a proper understanding of the concept. The study results in the form of an overview of students' initial concept understanding can be implied by astrophysics course supervisors to determine innovative learning techniques that will be used during learning so that students can improve their understanding of initial concepts that are not yet appropriate.
Implementasi Kurikulum Terpadu Model Integrated Berbasis STEM menggunakan Flipped Classroom untuk Meningkatkan Penguasaan Konsep
Authors: Ramadita Zavira Utami , Abdurrahman Abdurrahman , Suyatna Agus 
Published: November 2021

Tujuan pada penelitian ini untuk mengetahui pengaruh implementasi kurikulum terpadu model integrated berbasis STEM menggunakan flipped classroom dalam meningkatkan penguasaan konsep peserta didik. Pemilihan sampel pada penelitian ini menggunakan teknik purposive sampling, maka kelas sampel penelitian ini yaitu peserta didik kelas VII I SMP Al-Kautsar Bandar Lampung tahun ajaran 2020/2021. Desain penelitian yang digunakan dalam penelitian yaitu Pre-eksperimental dengan jenis One-Group­-Pretest-Posttest. Instrumen penelitian yang digunakan berupa lembar tes soal pilihan ganda. Pembelajaran dengan menerapkan pendekatan STEM mampu meningkatkan penguasaan konsep siswa hal ini terlihat dari nilai rata-rata nilai posttest siswa lebih unggul daripada nilai rata-rata pretest, yaitu 84,29 > 66.79. Berdasarkan hasil data penelitian menunjukkan nilai rata-rata N-gain, yaitu sebesar 0,503 yang berkatagori sedang, dan nilai signifikasi pada uji Paired Sample T-test sebesar 0,000 artinya bahwa implementasi kurikulum terpadu model integrated berbasis STEM mampu meningkatkan penguasaan konsep siswa pada materi global warming. Melalui pendekatan STEM yang diterapkan pada materi global warming peserta didik membentuk sikap kreatifitas, meningkatkan pemahaman materi, dan menggiring peserta didik untuk lebih menyadari pentingnya menjaga lingkungan. The purpose o this study is to find out the effect of implementing a STEM-based integrated model curriculum using a flipped classroom in increasing students' mastery of concepts. The sample in this study were 7th grade I students of Al-Kautsar Bandar Lampung Junior High School in the academic year 2020/2021. The research design used in the research is Pre-experimental with the type One-Group¬-Pretest-Posttest. The instrument in this study used a multiple-choice test sheet. Learning by applying the STEM approach can increase students' mastery of concepts; this can be seen from the average posttest value, which is greater than the pretest score, which is 84.29 > 66.79. Based on the research data results, the average N-gain is 0.503 medium-category. The significance value of the Paired Sample T-test is 0.000, meaning that implementing the STEM-based integrated curriculum can improve students' mastery of concepts in global warming material. Through the STEM approach applied to global warming material, students form a creative attitude, enhance understanding of the material, and better realise the importance of maintaining the environment.
Analisis Ketersediaan Peralatan, Bahan Ajar, Administrasi Laboratorium, Keterlaksanaan Kegiatan Praktikum di Laboratorium Fisika
Authors: Anggereni Santih , Suhardiman Suhardiman , Amaliah Resky 
Published: November 2021

Tujuan dari penelitian ini adalah untuk menganalisis gambaran ketersediaan peralatan, Bahan ajar, ketersediaan administrasi dan keterlaksanaan kegiatan praktikum di laboratorium fisika SMA Negeri kecamatan Pangkajene. Penelitian ini menggunakan jenis penelian deskriptif kuantitatif, dengab subjek penelitian adalah 3 kepala Laboratorium. Penelitian ini menggunakan lembar observasi dan dokumentasi sebagai instrumen penelitian. Hasil penelitian pada Laborarorium Fisika SMA Negeri Kecamatan Pangkep menunjukan ketersediaan peralatan praktikum diperoleh rerata 31,56 berada pada kategori kurang, ketersediaan bahan ajar memperoleh rerata 26,67 berada pada kategori kurang, ketersediaan administrasi laboratorium diperoleh rerata 10,25 berada pada kategori kurang serta keterlaksanaan kegiatan praktikum diperoleh rerata 41,81 juga berada pada kategori kurang. Hasil penelitian ini dapat menjadi pertimbangan kepada kepala laboratorium meningkatkan kinerja dalam mengorganisasikan pelaksanaan praktikum di Sekolah/Madrasah. This study aims of this study was to analyze the description of the availability of equipment, teaching materials, availability of administration and the implementation of practicum activities in the physics laboratory of SMA Negeri Pangkajene sub-district. This research uses quantitative descriptive research, with research subjects are 3 heads of laboratories. This study uses observation sheets and documentation as research instruments. The results of the research at the Physics Laboratory of SMA Negeri Pangkep District showed that the availability of practicum equipment obtained an average of 31.56 in the less category, the availability of teaching materials obtained an average of 26.67 in the less category, the availability of laboratory administration obtained an average of 10.25 was in the less category and implementation practicum activities obtained an average of 41.81 also in the less category. The results of this study can be considered for the head of the laboratory to improve performance in organizing the implementation of practicum in schools/madrasahs.
Motivasi Belajar Siswa SMA Pada Pembelajaran Fisika di Era New Normal
Authors: Fitriani Hafifah , Syarkowi Ahmad 
Published: November 2021

Di masa pandemi covid-19 dengan kasus penularan yang cukup tinggi, kegiatan belajar mengajar harus dilaksanakan secara daring, sehingga para guru maupun siswa harus siap menghadapi era baru yaitu era new normal. Aspek utama keberhasilan belajar siswa adalah motivasi. Oleh sebab itu perlu dilakukan riset ini untuk menganalisis bagaimana motivasi belajar siswa SMA pada pembelajaran daring terutama berfokus pada pengukuran motivasi 2 (dua) tingkat. Riset ini merupakan penelitian kuantitatif deskriptif tipe survey dengan metode memberikan angket kepada siswa-siswi SMA di 6 (enam) sekolah yang melaksanakan pembelajaran fisika di era new normal dengan jumlah 305 responden. Teknik pengumpulan data didapatkan melalui penyebaran angket. Angket yang disebarkan terdiri atas 2 (dua) tingkatan yaitu, motivasi siswa belajar fisika dan persepsi siswa mengenai pembelajaran daring. Hasil analisis deskriptif menunjukkan bahwa siswa mempunyai persepsi belajar daring yang positif dan motivasi belajar fisika yang cukup tinggi. Pada variabel motivasi sangat tidak sepakat sebesar 6%, tidak sepakat 16%, sepakat 56% sangat sepakat 22%. Sedangkan pada variabel persepsi pembelajaran daring dengan hasil sangat tidak sepakat sebesar 4%, tidak sepakat 9%, sepakat 64% , dan sangat sepakat 23%. Adapun implikasi pentingnya hasil dari penelitian ini adalah sebagai data awal dan sebagai saran perbaikan pendidikan di era new normal. During the COVID-19 pandemic with a fairly high number of transmission cases, teaching and learning activities must be carried out online, so that teachers and students must be ready to face a new era, namely the new normal era. The main aspect of student learning success is motivation. Therefore, it is necessary to conduct this research to analyze how high school students' motivation in online learning is primarily focused on measuring 2 (two) levels of motivation. This research is a descriptive quantitative survey type with the method of giving questionnaires to high school students in 6 (six) schools that carry out physics learning in the new normal era with a total of 305 respondents. Data collection techniques were obtained through the distribution of questionnaires. The questionnaire distributed consisted of 2 (two) levels, namely, students' motivation to learn physics and students' perceptions of online learning. The results of the descriptive analysis show that students have a positive perception of online learning and a fairly high motivation to learn physics. On the motivation variable strongly disagree at 6%, disagree 16%, agree 56% strongly agree 22%. Meanwhile, on the online learning perception variable, 4% strongly disagree, 9% disagree, 64% agree, and strongly agree 23%. The implications of the importance of the results of this study are as initial data and as suggestions for improving education in the new normal.