bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Optimization of Mathematics Teaching Models in Colleges and Universities Based on Nonlinear Differential Equations
Authors: Wu Jie , Hasan Hafnida 
Published: August 2022

Abstract
Nonlinear fractional differential equations are an important part of advanced mathematics teaching. The existence and uniqueness of its positive solution have always been a hot topic of academic discussion. This article uses differential inclusion theory and the Lyapunov stability method to analyze the finite-time stabilization control problem of the discontinuous mathematical adjustment model. The article uses a modified decomposition method and convergence acceleration technology in the application of fractional differential equations. The method gives an analytical approximate solution sequence that is easy to calculate, verify, and quickly converge. Finally, examples of Lyapunov stability and the construction of the V function can inspire students to understand ordinary differential equations and increase their interest in learning.
Study on spatial planning and design of learning commons in university libraries based on fuzzy matrix model
Authors: Gu Binli , Tanoue Kenichi , Sedki Ali 
Published: August 2022

Abstract
Campus university library as a spiritual force, in the development of social economy and science and technology innovation, according to the requirements of education management research scholars and students growth changes proposed learning Shared space, the effective integration of space, resources, service as one of the new construction idea, not only makes the university library become more perfect effective, It can also enhance the cohesion and innovation of internal operation. Nowadays, with the increase of the number of university libraries around the country, the scale of internal construction is getting bigger and bigger, and the planning and design of learning shared space based on university libraries has become the focus of scientific research. In essence, learning shared space, as a seamless learning environment, begins to innovate toward intellectualization and modernization while transforming the functional role of university libraries. In this article, therefore, learn about the current university library, on the basis of Shared space planning and design content, according to the fuzzy matrix model, analysis of the application of image retrieval algorithm is verified, the final results show that in the university library to promote learning sharing space, can not only meet the diverse needs of the readers, you can also change the traditional mode of the library service.
Study on Interactive Relations between Enterprise Social Media and Decision Style Based on a vector Autoregressive Model
Authors: Mao Jinrong , Alhamami Mohammed 
Published: August 2022

Abstract
in the network technology increasingly innovation, weibo social media such as WeChat gradually become people thought together and important platform of communication, both theoretical knowledge and practical case studies, have proved that social media can be intuitive show people the focus of the current problems, to provide effective basis for market development and investment decisions. Especially in the comprehensive promotion of text mining technology, topic extraction related to corporate social media has been reasonably applied in the financial market. However, due to the problems of sparse and unstructured data, topic extraction in practical application has become the main subject explored by researchers and scholars. This paper studies enterprise microblogging social media, for example, using both the theme of the text content and platform interactive method, according to the relations between the two kinds of typical weibo relation and the matrix, and by using two consecutive nonnegative matrix decomposition process is analyzed, finally the corresponding distance as a result, and extracting keywords to express the relationship. The actual verification results show that the clustering accuracy and theme similarity of this method are more effective than traditional theme extraction methods in corporate social media.
Research on Dynamics of Flexible Multibody System with Deployable Antenna Based on Static Lagrangian Function
Authors: Yan Yu , Al dmour Ayman 
Published: August 2022

Abstract
Deployable antennas, as the core content of national defense technology research at this stage, have the advantages of large flexibility and light weight in practical applications, so this type of antenna can also be called a rigid-flexible hybrid structure. According to the theoretical analysis of the dynamics of flexible multi-body systems, it can be seen that effective control of unfolding antennas is a basic requirement for practical applications. Due to the instability of the specific numerical solution of the static Lagrangian function, it is difficult to completely meet the constraint equation, which is also the main factor affecting the steady development of flexible multibody dynamics. Therefore, in-depth discussion of the numerical calculation method of the static Lagrangian function, obtaining efficient and stable numerical methods from it, and providing effective information for the process control of the deployment of the antenna, is the focus of scientific research scholars at this stage. Based on the understanding of the flexible multi-body dynamics modeling method, this paper systematically analyzes the calculation method of the differential equations, and combines the direct modification method of the constraint violation of the augmentation method to propose the simulation calculation of the model. The final results prove that the dynamics of flexible multi-body systems have a positive effect on the application analysis of deployable antennas.
Construction and application of automobile user portrait based on k-mean clustering model
Authors: Wei Da , Zhu Sibo , Wang Jian , Alshalabi Riyad 
Published: August 2022

Abstract
In the field of computer vision development, the core problem is how to obtain high-level semantic information from the lowest level of original video data, and make a correct understanding. At present, the research topics proposed at home and abroad are mainly focused on the visual analysis of moving objects. Especially for image research in automobile field, visual analysis of moving objects is one of the most common topics. Its focus is to use computer vision technology to detect moving objects, and describe and understand them after tracking and recognizing relevant user portraits and behaviors. In this paper, taking vehicle driving posture preference as an example, linear dimension parameters were used instead of human joint Angle parameters to simply present the driving posture of vehicle users, and corresponding dimension parameters were obtained to present the driving posture characteristics of vehicle users. By inviting 50 drivers to participate in the test of driving attitude preference, cluster analysis was carried out on three sample data representing upper body attitude, and the clustering results were presented by combining with three-dimensional images. The final results show that the k-means clustering model can eliminate the influence of body size difference, accurately distinguish the preference characteristics of driving posture, and scientifically design steering wheel and car seat according to the measurement data of target users.
The Homework Model of Screening English Teaching Courses Based on Fractional Differential Equations
Authors: Xiong Ying , Jaamour Qamar , Erkir Sarp 
Published: August 2022

Abstract
The phenomenon of plagiarism in coursework is common among college students. This phenomenon seriously affects the quality of higher education. The school has developed a series of homework similarity checking models to ensure the originality of English teaching coursework. The fractional differential equation method is used to classify and analyze the assignments with plagiarism suspicion. The article calculates program similarity’s fractional differential equation calculation by sequence matching algorithm in English homework. Finally, we extract AST features of similar program parts and generate spatial vectors. The research aims to find out plagiarized assignment texts by cluster analysis. Experimental research shows that the establishment of this model can assist English teachers in checking online homework. At the same time, the model can also help improve the efficiency of teachers’ homework checking.
The Stability Model of Piano Tone Tuning Based on Ordinary Differential Equations
Authors: Guo Jingjing 
Published: August 2022

Abstract
Based on the theory of ordinary differential equations, this paper proposes a stable and discriminative method for piano tone tuning. We perform discriminative training on the hidden Markov tone model according to ordinary differential equations’ feature extraction parameters and model parameters. The model can improve the recognition rate of piano tones. This paper trains and tests the MAPS universal dataset for musical transcription of automatic piano tones. The model is uniformly trained on the synthetic part and tested on the real recording part. The experimental study found that the proposed model has high recognition stability and accuracy in piano tone recognition.
Young Age Onset Multivascular Pathology in a Patient with Severe Dyslipidemia: an Incidental Case or a Particular Type of Familial Hypercholesterolemia?
Authors: Miftode Radu-Stefan , Haba Ana-Maria , Ursaru Andreea-Maria , Petris Antoniu Octavian , Mitu Ovidiu 
Published: August 2022

Abstract
Familial hypercholesterolemia (FH) is a genetic disorder that affects about 1 in 250 people and increases the likelihood of having coronary heart disease at a younger age. We present the case of a 55-year-old patient, known with inferior and anterior myocardial infarction treated by percutaneous coronary intervention and coronary artery bypass grafts, Leriche syndrome, aortic abdominal aneurysm, and bilateral renal stents—pathologies with onset at a young age—who was admitted for fast-paced palpitations, accompanied by increased fatigue. The coronarography did not reveal any acute lesions, but the presence of ventricular tachycardia at admission required the implantation of a cardiac defibrillator. Since the patient presented with early onset severe systemic atherosclerosis, with a lipid profile dominated by hypo-HDL, doubled by an apolipoprotein A1 deficiency, we considered the diagnosis of familial hypercholesterolemia. Due to the high-risk profile, the association between a statin and a PCSK9 inhibitor was initiated at discharge. At the 1-month follow-up control, a significant reduction of LDL-C has been achieved, with a simultaneous increase of HDL-C serum levels.
ISOTERM ADSORPSI Pb(II) PADA KARBON AKTIF TEMPURUNG KELAPA DENGAN VARIASI KONSENTRASI AKTIVATOR NATRIUM BIKARBONAT (ISOTHERMAL ADSORPTION OF Pb(II) BY ACTIVATED CARBON WITH VARIATIONS IN CONCENTRATION OF SODIUM BICARBONATE)
Authors: Maruni Erma , Nurlina Nurlina , Wahyuni Nelly 
Published: August 2022

ABSTRACT Activated carbon is a porous solid that contains 85-95% carbon. The study used coconut shells as carbon sources and sodium bicarbonate as activators. Sodium bicarbonate can release carbon dioxide (CO2), where the CO2 will be used as a carbon donor. The study aims to explain the properties of carbon, activated carbon (KA) and its performance test in the solutions of Pb(II) ions. Metallic lead is toxic, which can slow down the normal working of red blood cells so that it can cause anaemia and can also inhibit the biosynthesis of haemoglobin. The research phase starts from the pyrolysis of coconut shells (t =2 hours, T=230 oC) to carbon. Carbon is activated with the variated percentage of sodium bicarbonate from 0 % to 8% and soaked for 24 hours (KA 0%, KA 4% and KA 8%). Activated carbon is characterized by water content, ash content, uptake of iodine, and methylene blue following the SNI method. Carbon, KA 0%, KA 4% and KA 8% tested its performance as adsorbent ion Pb(II) from PbNO3 solution with concentrations of 5, 10, 15, 20 and 25 ppm. The results showed that the water content, ash levels, and uptake of blue methylene KA met SNI No. 06-3730-1995. The highest adsorption efficiency at five ppm Pb(II) of carbon = 86.87%, KA 4% = 99.01% Isotherm adsorption of Pb(II) ions fitted to Langmuir for Carbon and KA 4% with K = 1.5044 L/g, am = 0.11 mg/g and K= 4.9468 L/g, am = 1.0735 mg/g, respectively
Analisis Kerentanan XSS dan Rate Limiting Pada Website SMAN 8 Denpasar Menggunakan Framework OWASP ZAP
Authors: Angga Septiawan Gede , Irawan K.W.S. , Mayasari I. , Listartha I.M.E. 
Published: August 2022

Pada era digital sekarang hampir semua orang mengakses internet, Website merupakan salah satu situs yang ada di internet yang dapat menyimpan dan menyebarkan segala informasi. Seiring dengan perkembangan teknologi, keamanan suatu website mulai terancam karena maraknya serangan-serangan yang dilakukan oleh penjahat digital. Website yang memiliki sistem keamanan yang lemah akan rentan oleh serangan ancaman yang dapat terjadi sewaktu-waktu. Kasus kerentanan yang sering ditemui yakni Cross Site Scripting (XSS) dan Rate Limiting. Untuk mengantisipasi hal tersebut, aplikasi OWASP ZAP dapat dimanfaatkan untuk menguji kerentanan XSS yang ada pada sebuah website, salah satunya pada website sekolah SMA Negeri 8 Denpasar. Pengujian kerentanan XSS dilakukan dengan cara melakukan pemindaian, kemudian generate report. Melalui report tersebut, dilakukan analisis untuk membuktikan ada atau tidaknya kerentanan XSS pada website yang bersangkutan. Sedangkan, kerentanan Rate Limiting diuji secara manual pada fitur login website SMA Negeri 8 Denpasar, dengan cara memasukkan username dan password secara acak dan berulang-ulang. Kata Kunci—OWASP ZAP, Rate Limiting, XSS, Kerentanan
Perancangan Sistem Informasi Jasa Laundry Berbasis Web Pada Laundry Cucimania Depok
Authors: Tanjung Arisyi Said , Serli Rosi Kusuma 
Published: August 2022

Laundry Cucimania merupakan sebuah bisnis yang bergerak dibidang jasa pencucian pakaian. Semua pencatatan masih dilakukan secara konvensional mulai dari pembuatan nota, pencatatan transaksi, dan pencatatan data pelanggan. Setiap pencatatan transaksi disimpan dalam sebuah buku, sehingga terjadi penumpukan arsip fisik yang dapat menimbulkan banyak masalah dalam pembuatan laporan transaksi, pencarian data dan perhitungan data. Tujuan penelitian ini adalah merancang sistem yang dapat mengelola data dan transaksi menjadi terkomputerisasi dan otomatis sehingga operasional berjalan lebih efisien dan data menjadi tersimpan lebih baik. Menggunakan metode waterfall yang terdiri dari lima fase: analisis kebutuhan perangkat lunak, desain, pembuatan kode program, pengujian, dukungan, atau pemeliharaan. Sedangkan untuk pengumpulan data dilakukan dengan observasi, wawancara, dan penelusuran literatur yang berhubungan dengan penelitian ini. Hasil penelitian menunjukkan bahwa sistem yang sudah terkomputerisasi membuat operasional menjadi lebih efektif dan efisien, data transaksi tersimpan dengan rapi sehingga membuat rekapitulasi data lebih efisien, serta meminimalkan kesalahan input maupun kesalahan hitung.
(Re)turning to contrastive rhetoric’s basic communication principles: A Common Ground theory perspective
Authors: Brown Jonathon David 
Published: August 2022

Contrastive rhetoric (CR) has made great contributions to our understanding of L2 writing. Nevertheless, CR has endured countless criticisms over the years, resulting in “reimagined” forms attempting to address many of these criticisms. In doing so, these forms have shaped CR into a collection of complex ideologies that have unnecessarily complicated CR and impeded its efficacy in both research and the classroom. Therefore, to make CR more practicable, it must be decluttered and brought back to its fundamentals. To accomplish this, I look at CR within the theoretical framework of Clark’s (1996) Common Ground (CG) theory, which affixes it to something much more universal and heterogeneous–communication. Essentially, what I postulate here is that when CR is considered in tandem with CG theory, CR is shifted from an ideological theory that fails to take into consideration socially and politically constructed notions of L2 writing to an approach concerned with basic communication principles. When this shift occurs, many of its criticisms can be assuaged and CR can once again become more practical for researchers and an effective tool for teachers to help their students achieve their writing goals.
ANALISIS INVESTASI PADA PEMBANGUNAN PROYEK PERUMAHAN DENGAN METODE DISCOUNTED CASH FLOW (Studi Kasus: Proyek Perumahan Mutiara Kalimasodo 99, Brebes)
Authors: Permana Eka Mulia , Iskahar Iskahar , Al Fathoni M. Agus Salim 
Published: August 2022

Perumahan Mutiara Kalimasodo 99 berada di Kota Brebes termasuk perumahan yang sedang dalam masa pembangunan. Untuk mewujudkan pembangunan perumahan ini perlu adanya modal kerja. Kemudian modal kerja ini dianalisis dengan menggunakan Metode Discounted Cash Flow yaitu kelayakan investasi dimasa yang akan datang dengan menentukan Present Value dan harga perlembar sahamnya. Hasil dari penelitian ini adalah total modal kerja yaitu dari penerbitan saham dengan total 500.000 lembar saham atau senilai dengan Rp. 1.000.000.000,00,- dan biaya perolehan tanah sebesar Rp. 4.018.010.080,00,- serta mengetahui kelayakan investasi dari pembangunan Perumahan ini dengan cara mengetahui Present Value diluar tahun perkiraan yaitu selama 5 tahun senilai Rp. 50.768.658.329,00,- dan harga perlembar saham adalah Rp. 101.537,00,-. Berdasarkan hasil analisis yang diperoleh bahwa pembangunan Perumahan ini menguntungkan dari segi finansialnya.
Penerapan Pendekatan Matematika Realistik terhadap Kemampuan Pemahaman Konsep Pengukuran pada Anak Usia 5-6 Tahun
Authors: Amalina Amalina , Yanti Fitri , Warmansyah Jhoni 
Published: August 2022

Pentingnya pemahaman konsep pengukuran untuk mengembangkan aspek kognitif anak menjadi latar belakang penelitian ini dengan tujuan untuk mengetahui bagaimana penerapan pendekatan matematika realistik terhadap kemampuan memahami konsep pengukuran anak usia 5-6 tahun. Pendekatan kuantitatif diterapkan pada penelitian ini dengan menggunakan jenis penelitian quasy experiment dan disain penelitian randomized control group only design dimana pemberian perlakuan pada kelas eksperimen menggunakan pendekatan matematika realistik sedangkan kelas kontrol tidak diberi perlakuan (pembelajaran konvensional). Subjek penelitian berjumlah 20 orang anak dengan kelas B1 sebagai kelas eksperimen dan B2 kelas control di TK Permata Bunda, Pagaruyung. Pengumpulan data penelitian menggunakan lembar ceklis observasi dengan pengujian hipotesis menggunakan uji-t. Berdasarkan hasil analisis uji statistik dengan menggunakan uji beda (uji-t) pada taraf signifikan 5% diperoleh t hitung 2,73 lebih dari t tabel yaitu 1,73. Jadi dapat disimpulkan kemampuan pemahaman
Pengembangan Perangkat Pembelajaran Berbasis HOTS Menggunakan Model Pembelajaran Contextual Teaching Learning untuk Meningkatkan Kemampuan Critical Thinking dan Self-Confidence
Authors: Simbolon Joskar , Nasution Hamidah , Simanjorang Mangaratua 
Published: August 2022

Tujuan penelitian ini adalah untuk mengetahui kevalidan, keefektifan dan kepraktisan perangkat pembelajaran berbasis Higher Order Thinking Skills (HOTS) dengan menggunakan model pembelajaran Contextual Teaching Learning (CTL) untuk meningkatkan kemampuan critical thinking dan self-confidence siswa, selanjutnya untuk mengetahui peningkatan critical thinking siswa dengan pembelajaran berbasis Higher Order Thinking Skills (HOTS) dengan menggunakan model pembelajaran CTL, dan untuk mengetahui peningkatan self-confidence siswa dengan pembelajaran berbasis Higher Order Thinking Skills (HOTS) dengan menggunakan model pembelajaran Contextual Teaching Learning. Penelitian ini termasuk penelitian dengan menggunakan model pengembangan 4-D. Subjek dalam penelitian ini adalah siswa kelas XII SMAN 2 Percut Sei Tuan , kelas XII IPA 1 dan XII IPA 2, tahun Ajaran 2021/2022, sedangkan objek dalam penelitian ini adalah perangkat pembelajaran yang dikembangkan berbasis Higher Orders Thinking Skills (HOTS) menggunakan model pembelajaran CTL pada materi tiga dimensi yang meliputi Rencana Pelaksanaan Pembelajaran, Buku Siswa , Lembar Kerja Peserta Didik , Tes Kemampuan Berpikir Kritis, dan angket Self Confidence. Hasil penelitian menunjukkan bahwa perangkat pembelajaran berdasarkan pembelajaran berbasis HOTS dengan model pembelajaran CTL untuk meningkatkan kemampuan berpikir kritis dan self - confidence siswa yang dikembangkan sudah memenuhi kriteria valid, praktis dan efektif, selain itu peningkatan kemampuan berpikir kritis siswa menggunakan perangkat pembelajaran berbasis HOTS yang telah dikembangkan dilihat dari nilai N- Gain pada uji coba I sebesar sebesar 0,35 % meningkat pada uji coba II menjadi 0,47% dan peningkatan kemampuan self- confidence siswa menggunakan perangkat pembelajaran berbasis HOTS pada materi jarak dalam dimensi tiga dengan rata- rata self- confidence siswa pada uji coba I sebesar 79,89 meningkat menjadi 85,35 pada uji coba II.
A multi-institutional survey on calvarial vault remodeling techniques for sagittal synostosis and outcomes analysis for patients treated at 12 months and older
Authors: Chi David , Gibson Ella , Chiang Sarah N. , Lee Koeun , Naidoo Sybill D. , Lee Amy , Birgfeld Craig , Pollack Ian F. , Goldstein Jesse , Golinko Michael , Bonfield Christopher M. , Siddiqi Faizi A. , Kestle John R. W. , Smyth Matthew D. , Patel Kamlesh B. , _ _ 
Published: August 2022

OBJECTIVE
Surgical treatment of sagittal craniosynostosis is challenging in older patients. This study aimed to assess the effect of increasing age on open surgical technique selection and patient outcomes using the multi-institutional Synostosis Research Group (SynRG) collaboration.

METHODS
Surgeons in SynRG were surveyed for key influences on their preferred open calvarial vault remodeling techniques at various patient ages: < 6, 6–12, and > 12 months. The SynRG database was then queried for open repairs of nonsyndromic sagittal craniosynostosis performed for patients older than 12 months of age. Perioperative measures, complications, and preoperative and postoperative cephalic indices were reviewed.

RESULTS
All surgeons preferred to treat patients at an earlier age, and most (89%) believed that less-optimal outcomes were achieved at ages older than 12 months. The modified pi procedure was the dominant technique in those younger than 12 months, while more involved open surgical techniques were performed for older patients, with a wide variety of open calvarial vault remodeling techniques used. Forty-four patients met inclusion criteria, with a mean (± SD) age at surgery of 29 ± 16 months. Eleven patients underwent parietal reshaping, 10 parietal-occipital switch, 9 clamshell craniotomy, 7 geometric parietal expansion, 6 modified pi procedure, and 1 parietal distraction. There were no readmissions, complications, or mortality within 30 days postoperatively. Patients’ cephalic indices improved a mean of 6.4% ± 4.0%, with a mean postoperative cephalic index of 74.2% ± 4.9%. Differences in postoperative cephalic index (p < 0.04) and hospital length of stay (p = 0.01) were significant between technique cohorts. Post hoc Tukey-Kramer analysis identified the parietal reshaping technique as being significantly associated with a reduced hospital length of stay.

CONCLUSIONS
Patient age is an important driver in technique selection, with surgeons selecting a more involved calvarial vault remodeling technique in older children. A variety of surgical techniques were analyzed, with the parietal reshaping technique being significantly associated with reduced length of stay; however, multiple perioperative factors may be contributory and require further analysis. When performed at high-volume centers by experienced pediatric neurosurgeons and craniofacial surgeons, open calvarial vault techniques can be a safe method for treating sagittal craniosynostosis in older children.