bluuebunny/crossref_metadata_2025 huggingface dataset:
A Comparison of Macaulay Approximations
Authors: Orfanos Stefanos C.
Published: August 2022

We discuss several known formulas that use the Macaulay duration and convexity of commonly used cash flow streams to approximate their net present value, and compare them with a new approximation formula that involves hyperbolic functions. Our objective is to assess the reliability of each approximation formula under different scenarios. The results in this note should be of interest to actuarial candidates and educators as well as analysts working in all areas of actuarial practice.
Semantic-Edge-Supervised Single-Stage Detector for Oriented Object Detection in Remote Sensing Imagery
Authors: Cao Dujuan , Zhu Changming , Hu Xinxin , Zhou Rigui
Published: August 2022

In recent years, significant progress has been made in arbitrary-oriented object detection. Different from natural images, object detection in aerial images remains its problems and challenges. Current feature enhancement strategies in this field mainly focus on enhancing the local critical response of the target while ignoring the target’s contextual information, which is indispensable for detecting remote sensing targets in complex backgrounds. In this paper, we innovatively combine semantic edge detection with arbitrary-oriented object detection and propose a feature enhancement network base on a semantic edge supervision module (SES) that realizes an attention-like mechanism in three dimensions of space, channel, and pyramid level. It helps the network pay attention to the edge features of targets at multiple scales to obtain more regression clues. Furthermore, to solve the problem of dense objects with different directions in remote sensing images, we propose a rotation-invariant spatial pooling pyramid (RISPP) to extract the features of objects from multiple orientations. Based on the two feature enhancement modules, we named the network SE2-Det; extensive experiments on large public datasets of aerial images (DOTA and UCAS-AOD) validate our approach’s effectiveness and demonstrate our detector’s superior performance.
Influences of Seasonal Soil Moisture and Temperature on Vegetation Phenology in the Qilian Mountains
Authors: Cui Xia , Xu Gang , He Xiaofei , Luo Danqi
Published: August 2022

Vegetation phenology is a commonly used indicator of ecosystem responses to climate change and plays a vital role in ecosystem carbon and hydrological cycles. Previous studies have mostly focused on the response of vegetation phenology to temperature and precipitation. Soil moisture plays an important role in maintaining vegetation growth. However, our understanding of the influences of soil moisture dynamics on vegetation phenology is sparse. In this study, using a time series of the normalized difference vegetation index (NDVI) from the moderate resolution imaging spectroradiometer (MODIS) dataset (2001–2020), the start of the growing season (SOS), the end of the growing season (EOS), and the length of the growing season (LOS) in the Qilian Mountains (QLMs) were extracted. The spatiotemporal patterns of vegetation phenology (SOS, EOS, and LOS) were explored. The partial coefficient correlations between the SOS, EOS, and seasonal climatic factors (temperature, precipitation, and soil moisture) were analyzed. The results showed that the variation trends of vegetation phenology were not significant (p > 0.05) from 2001 to 2020, the SOS was advanced by 0.510 d/year, the EOS was delayed by 0.066 d/year, and the LOS was prolonged by 0.580 d/year. The EOS was significantly advanced and the LOS significantly shortened with increasing altitude. The seasonal temperature, precipitation, and soil moisture had spatiotemporal heterogeneous effects on the vegetation phenology. Overall, compared with temperature and soil moisture, precipitation had a weaker influence on the vegetation phenology in the QLMs. For different elevation zones, the temperature and soil moisture influenced the vegetation phenology in most areas of the QLMs, and spring temperature was the key driving factor influencing SOS; the autumn soil moisture and autumn temperature made the largest contributions to the variations in EOS at lower (<3500 m a.s.l.) and higher elevations (>3500 m a.s.l.), respectively. For different vegetation types, the spring temperature was the main factor influencing the SOS for broadleaf forests, needleleaf forests, shrublands, and meadows because of the relative lower soil moisture stress. The autumn soil moisture was the main factor influencing EOS for deserts because of the strong soil moisture stress. Our results demonstrate that the soil moisture strongly influences vegetation phenology, especially at lower elevations and water-limited areas. This study provides a scientific basis for better understanding the response of vegetation phenology to climate change in arid mountainous areas and suggests that the variation in soil moisture should be considered in future studies on the influence of climate warming and environmental effects on the phenology of water-limited areas.
A Novel Weakly Supervised Remote Sensing Landslide Semantic Segmentation Method: Combining CAM and cycleGAN Algorithms
Authors: Zhou Yongxiu , Wang Honghui , Yang Ronghao , Yao Guangle , Xu Qiang , Zhang Xiaojuan
Published: August 2022

With the development of deep learning algorithms, more and more deep learning algorithms are being applied to remote sensing image classification, detection, and semantic segmentation. The landslide semantic segmentation of a remote sensing image based on deep learning mainly uses supervised learning, the accuracy of which depends on a large number of training data and high-quality data annotation. At this stage, high-quality data annotation often requires the investment of significant human effort. Therefore, the high cost of remote sensing landslide image data annotation greatly restricts the development of a landslide semantic segmentation algorithm. Aiming to resolve the problem of the high labeling cost of landslide semantic segmentation with a supervised learning method, we proposed a remote sensing landslide semantic segmentation with weakly supervised learning method combing class activation maps (CAMs) and cycle generative adversarial network (cycleGAN). In this method, we used the image level annotation data to replace pixel level annotation data as the training data. Firstly, the CAM method was used to determine the approximate position of the landslide area. Then, the cycleGAN method was used to generate the fake image without a landslide, and to make the difference with the real image to obtain the accurate segmentation of the landslide area. Finally, the pixel-level segmentation of the landslide area on remote sensing image was realized. We used mean intersection-over-union (mIOU) to evaluate the proposed method, and compared it with the method based on CAM, whose mIOU was 0.157, and we obtain better result with mIOU 0.237 on the same test dataset. Furthermore, we made a comparative experiment using the supervised learning method of a u-net network, and the mIOU result was 0.408. The experimental results show that it is feasible to realize landslide semantic segmentation in a remote sensing image by using weakly supervised learning. This method can greatly reduce the workload of data annotation.
Effect of sterile tetracycline ophthalmic ointment as an adjuvant to mechanical debridement on the treatment of peri-implantitis: A randomized controlled clinical trial
Authors: Chitsazi Mohammad Taghi , Khorramdel Azin , Mesforoush Mohammad Amin
Published: August 2022

Background. Peri-implantitis is an infectious disease that affects the tissues around dental implants, with clinical signs of inflammation and irreversible loss of supporting bone. This study aimed to compare the effect of sterile topical tetracycline ophthalmic ointment as an adjuvant to mechanical debridement with mechanical debridement alone in the treatment of peri-implantitis. Methods. In this single-blind randomized clinical trial, 32 patients (16 patients in each group) with peri-implantitis were treated topically using sterile tetracycline ophthalmic ointment. Four clinical parameters, including modified bleeding index (mBI), modified plaque index (mPI), probing depth (PD), and clinical attachment level (CAL), were measured at baseline and at 3- and 6-month follow-up intervals. Results. PD reduction was statistically significant after 3 and 6 months in the test and control groups (P=0.001). Also, mPI and mBI reduction rates were significant in the test and control groups (P=0.001) after 3 and 6 months. However, in all the samples in the two groups, the mean of CAL before and after treatment was constant, with no significant difference (P>0.05). Conclusion. Using sterile ocular tetracycline ointment could be an adjunctive treatment in improving and enhancing the therapeutic effects of mechanical debridement in the treatment of peri-implantitis. (IRCT20210909052418N1)
Biomaterials and biotechnology for periodontal tissue regeneration: Recent advances and perspectives
Authors: Deng Rong , Xie Yuzheng , Chan Unman , Xu Tao , Huang Yue
Published: August 2022

Periodontal tissues are organized in a complex three-dimensional (3D) architecture, including the alveolar bone, cementum, and a highly aligned periodontal ligament (PDL). Regeneration is difficult due to the complex structure of these tissues. Currently, materials are developing rapidly, among which synthetic polymers and hydrogels have extensive applications. Moreover, techniques have made a spurt of progress. By applying guided tissue regeneration (GTR) to hydrogels and cell sheets and using 3D printing, a scaffold with an elaborate biomimetic structure can be constructed to guide the orientation of fibers. The incorporation of cells and biotic factors improves regeneration. Nevertheless, the current studies lack long-term effect tracking, clinical research, and in-depth mechanistic research. In summary, periodontal tissue engineering still has considerable room for development. The development of materials and techniques and an in-depth study of the mechanism will provide an impetus for periodontal regeneration.
Quantifying the degree of white spot lesions on enamel caused by different commercial beverages using the Canary Caries Detection System: An in vitro study
Authors: Michaelis John , Yu Qingzhao , Lallier Tom , Xu Xiaoming , Ballard Richard W , Armbruster Paul
Published: August 2022

Background. The use of sports and energy drinks has drastically increased in the adolescent population. This population often is in orthodontic treatment, and the use of such drinks with poor oral hygiene promotes the development of white spot lesions (WSLs). Quantifying the degree of the lesion has been limited in the past. The hypothesis was that the Canary Caries Detection System could be used to quantify the degree of WSLs caused by different commercial beverages. Methods. A total of 105 extracted human premolars were divided into seven groups (n=15). Each group was tested in one of six beverages or a phosphate-buffered solution (control). The teeth were exposed to its beverage three times a day for 15 minutes for 28 days. Canary numbers and ambient light and fluorescent photographs were collected at baseline (T0 ) and on days 14 (T1 ) and 28 (T2 ). Results. The paired t test and one-way ANOVA found that T0 to T1 measurements were statistically significant (P<0.0015) and that T0 to T2 measurements were statistically significant (P<0.0001). Visually, the ambient light photographs and fluorescent photographs from T0 to T1 and T1 to T2 correlated with the increase in Canary numbers. Conclusion. This in vitro study revealed a statistically significant increase in the T0 to T1 Canary numbers and a statistically significant increase from T0 to T2 Canary numbers for all the test beverages. Changes in Canary numbers indicated significant changes in mineral density (i.e., demineralization) and development of WSLs on enamel after exposure to sports and energy beverages.
Effect of three intracanal medicaments used in pulp regeneration on the push-out bond strength of mineral trioxide aggregate and calcium-enriched mixture: An in vitro study
Authors: Ghasemi Negin , Yavari Hamidreza , Samiei Mohammad , Asl Aminabadi Naser , Dabbaghi Tabriz Fatemeh , Taheri Samra , Davoudi Paria
Published: August 2022

Background. The bond strength of the materials used as a cervical barrier in the pulp regeneration is essential for the success of treatment. This study aimed to evaluate the effects of triple antibiotic paste (TAP), double antibiotic paste (DAP), and simvastatin as intracanal medicaments on the dislodgement resistance of mineral trioxide aggregate (MTA) and calcium-enriched mixture (CEM). Methods. A total of 160 extracted human single-rooted teeth were selected, and root canal preparation was carried out. The teeth in each group were randomly divided into four subgroups: TAP, DAP, simvastatin, and the control group (without intracanal medicament). Four weeks after placing the medicaments, it was removed by sodium hypochlorite, and MTA and CEM were placed in the coronal third of the root canals. After a week, 2-mm-thick dentin disks were prepared from the coronal third of the roots, and the push-out test was performed using a universal testing machine. The data were analyzed using two-way ANOVA and independent t-test at a significance level of 0.05. Results. Regardless of the intracanal medicament, there was no significant difference between the overall bond strength of MTA (59.3±10 MPa) and CEM (55.8±11 MPa) (P=0.6). Furthermore, there were no significant differences in bond strength between the two intracanal medicament groups and the control group (P>0.05). Conclusion. Under the limitations of the current study, DAP, simvastatin, and TAP, as intracanal medicaments, did not adversely affect the push-out bond strength of CEM and MTA.
Visual perception of repaired cleft lip scarring face associated with different malocclusions via eye-tracking
Authors: Guimarães Lara Karolina , Gasparello Gil Guilherme , Pithon Matheus Melo , Bark Mohamad Jamal , Mota Júnior Sergio Luiz , Tanaka Orlando Motohiro
Published: August 2022

Background. This study aimed to evaluate the visual facial perception in response to scars associated with repaired cleft lip (CL) on a male adolescent patient, as assessed via eye-tracking. Methods. Index of orthodontic treatment need (IOTN) malocclusions, grades 1, 5, and 8 were added to the frontal view facial image of an adolescent male model showing asymmetries of the nose and upper lip after CL surgery using the software Photoshop CS5® software. The eye movements of 91 laypeople observers were tracked by an Eye Tribe infrared sensor connected to OGAMA© software. A Kruskal–Wallis test was used to identify differences in total fixation time and time until the first fixation for the areas of interest. A visual analog scale (VAS) of attractiveness was also used in the study. Statistical analysis was performed adopting a significance level of P<0.05. Results. The area of interest (AOI) were found to be the mouth and teeth, which were more focused on gazed at than any other area, regardless of the grade of IOTN. For observers of different ages, there were significant differences in the time until the first fixation on the scar of the repaired CL region for IOTN grade 1 (P=0.007). Images showing IOTN grade 1 repaired CL regions received the highest VAS scores. The older the age, the greater the tendency to give a higher VAS score for the same malocclusion. Conclusion. The presence of a CL scar on the upper lip did not attract the eye of laypeople observers of different ages, regardless of the degree of malocclusion in the non-smile image. The age of the observers did influence the perception of attractiveness, with older observers giving higher scores than younger ones. As the severity of the malocclusion increased, they were found to be less attractive.
Desarrollo de formulaciones antimicrobianas conteniendo nanopartículas de Ag y Silica: estudios de nanotoxicidad, de actividad antibacteriana e inhibición de la formación de biofilms
Authors:   , Blaiotta Carolina
Published: August 2022

Debido a que las infecciones intrahospitalarias se encuentran relacionadas con superficies contaminadas de los espacios comunes al paciente y los trabajadores de la salud. Y que en general, los desarrollos de microorganismos se dan por formación de biofilms, debido a que es un modo de supervivencia y permanencia de los mismos en ambientes hostiles. En la tesis se trabajó en la obtención de un principio activo con acción dual, es decir, que sea antimicrobiano e inhibidor de la formación de biofilms, al mismo tiempo. El principio activo se utilizó para formular un producto apto para aplicarse en zonas críticas y semi críticas de entornos de salud.
Simulasi Optimasi Suhu dari Sistem Pemanasan Temperatur Tinggi Berbasis Gelombang Mikro
Authors: Sagai Fingken Stevanus , Pandara Dolfie Paulus , Kolibu Hesky Stevy , Tongkukut Seni Herlina Juita , Ferdy Ferdy , Tamuntuan Gerald Hendrik , Abidjulu Gilbert
Published: August 2022

Telah dilakukan penelitian simulasi untuk menganalisis pengaruh variasi dimensi geometri tungku, daya oven gelombang mikro dan waktu pemanasan terhadap suhu tungku, dan mengoptimasi suhu tungku dalam pemanasan dengan gelombang mikro dari variasi parameter yang digunakan. Tungku kubus dengan panjang sisinya dan tungku silinder dengan diameter dan tingginya masing-masing memiliki ukuran yang sama yaitu 50 mm untuk tipe I, 70 mm untuk tipe II dan 90 mm untuk tipe III, yang terbuat dari material SiC dipanaskan dalam oven gelombang mikro pada daya 100%, 75% dan 50% dari daya maksimum 1,3 kW. Pemanasan tungku ini disimulasikan menggunakan perangkat lunak COMSOL Multiphysics. Hasil simulasi dari setiap parameter dilakukan analisis dan optimasi untuk mencapai suhu optimum 500oC dalam waktu yang singkat dengan konsumsi energinya yang rendah. Hasil simulasi yang diperoleh menunjukkan bahwa variasi parameter memengaruhi suhu yang dihasilkan tungku dan distribusi suhu di dalam tungku. Optimasi pada tungku kubus tipe II (ukuran 70 mm) yang dipanaskan dalam oven gelombang mikro dengan daya 1,3 kW (100%) mencapai suhu optimum 500oC dalam waktu relatif singkat sebesar 7 menit 33 detik (453 detik) dan konsumsi energi relatif rendah sebesar 5,889 × 105 J.Simulation research has been conducted to analyze the effect of variations in the dimensions of the furnace geometry, microwave oven power, and heating time on the furnace temperature, and optimize the furnace temperature in microwave heating from a variety of parameters used. The cube furnace with side length and cylindrical furnace with diameter and height respectively have the same size, namely 50 mm for type I, 70 mm for type II, and 90 mm for type III, which are made of SiC material heated in a microwave oven at power 100%, 75% and 50% of the maximum power of 1,3 kW. The heating of this furnace was simulated using COMSOL Multiphysics software. The simulation results for each parameter are analyzed and optimized to achieve the optimum furnace temperature of 500oC in a short time with low energy consumption. The simulation results obtained show that the parameter variations affect the temperature produced by the furnace and the temperature distribution in the furnace. Optimization of the type II cube furnace (size 70 mm) heated in a microwave oven with a power of 1,3 kW (100%) reaches the optimum temperature of 500oC in a relatively short time of 7 minutes 33 seconds (453 seconds) and relatively low energy consumption of 5,889 × 105 J.
Studi Awal Pengaruh Temperatur terhadap Karakteristik Aliran Fluida Pada Belokan Pipa 90° melalui Simulasi
Authors: Pratama Defrianto , Hadiningrum Kunlestiowati , Muldiani Ratu Fenny
Published: August 2022

Penelitian ini sebagai studi awal untuk mengetahui pengaruh temperatur fluida terhadap karakteristik aliran (laminar, transisi atau turbulen) dengan melihat perubahan tekanan, laju aliran dan bilangan Reynold pada belokan pipa. Aliran fluida (air) disimulasikan dengan software Ansys Fluent, kemudian didapatkan data perubahan tekanan, laju dan bilangan Reynold sepanjang pipa dengan belokan pipa 900. Hasil analisis data simulasi menunjukan bahwa setelah melewati belokan pipa 900, fluida dengan temperatur berbeda akan memiliki karakteristik aliran yang berbeda.
Studi tentang penggunaan bahan kayu pembuatan kapal ikan di galangan kapal Desa Pangi Kabupaten Bolaang Mongondow
Authors: Paputungan Hernita , Modaso Vivanda O.J. , Pamikiran Revold D.Ch. , Kaparang Frangky E. , Dien Heffry V. , Masengi Akira W.R. , Mandagi Ixchel F. , Masengi Kawilarang W.A.
Published: August 2022

Desa Pangi terletak di Kecamatan Lolak, Kabupaten Bolaang Mongondow, Provinsi Sulawesi Utara, Indonesia. Desa pangi memanjang dari timur ke barat denagn luas ± 9.240 Ha. Keadaan topografi desa pangi pada umumnya adalah dataran rendah, ketinggian dari permukaan laut 2 ≤ 10m, dan mempunyai iklim kemarau dan penghujan tropis. Kayu merupakan benda yang paling banyak digunakan umat manusia. Mulai dari hal kecil hingga hal yang besar, kayu digunakan sebagai kayu bakar. Adapula yang menggunakannya sebagai bahan bangunan.Tujuan penelitian ini adalah untuk mengetahui penggunaan jenis-jenis bahan kayu yang digunakan pada galangan kapal di desa Pangi-Sauk Kecamatan Lolak Kabupaten Bolaang Mongondow. Mengetahui prosentasi penggunaan bahan kayu menurut jenis dan menetahui klas awetdan kuat suatu bahan kayu.Adapun manfaat penelitian ini adalah penggunaan kayu yang baik yang digunakan untuk pembuatan kapal perikanan, dapat mengetahui jenis-jenis kayu yang digunakan serta mengintroduksi jenis-jenis kayu yang awet, kuat sebagai bahan baku pembuatan kapal perikanan.Kayu yang digunakan untuk material kapal tersebut tidak sembarangan jenis. Perlu diperhatikan struktur dan kekuatan dari kayu tersebut karena jika tidak diperhatikan akan berdampak buruk jika salah dalam memilih kayu. Karena penggunaan kayu untuk suatu tujuan tertentu tergantung dari sifat – sifat kayu yang bersangkutan dan persyaratan teknis yang diperlukan, yang mengarah ke jenis kayu yang akan dipilih, misalkan untuk kontruksi (kayu harus kuat, keras, mempunyai keawetan alam yang tinggi di air) biasanya untuk material kapal ada beberapa jenis kayu yang dapat dipilih seperti : jati, gopasa, balau, bungur, bangkirai dll. Untuk lantai (yang harus bersifat keras dan tahan terhadap keasaman) biasanya jenis kayu yang digunakan adalah kayu gopasa, kayu jati, kayu bungur dan lain – lain.Dalam pengambilan data ini dilakukan secara langsung dengan cara mewawancarai pengrajin kapal didesa pangi. Dari hasil wawancara dan melihat langsung proses pemanfaatan material kayu digalangan kapal ikan di desa pangi-sauk terlihat bahwa kayu untuk pembuatan dinding dan lantai kapal yang sangat membutuhkan banyak material kayu. Jenis – jenis kayu yang dominan adalah kayu gopasa, kayu keng, dan dangsa serta jati. Sedangkan untuk penulangan kayu talisei dan kapuraca sangat dominan. Hasil penelitian menunjukkan bahwa pembuatan kapal didesa pangi dominan menggunakan kayu gopasa, kayu jati, kayu keng, kayu dansa dan kayu jati.
Automated Fault Tree Learning from Continuous-valued Sensor Data
Authors: Budde Carlos E. , Bucur Doina , Verkuil Bart
Published: August 2022

Many industrial sectors have been collecting big sensor data. With recent technologies for processing big data, companies can exploit this for automatic failure detection and prevention. We propose the first completely automated method for failure analysis, machine-learning fault trees from raw observational data with continuous variables. Our method scales well and is tested on a real-world, five-year dataset of domestic heater operations in The Netherlands, with 31 million unique heater-day readings, each containing 27 sensor and 11 failure variables. Our method builds on two previous procedures: the C4.5 decision-tree learning algorithm, and the LIFT fault tree learning algorithm from Boolean data. C4.5 pre-processes each continuous variable: it learns an optimal numerical threshold which distinguishes between faulty and normal operation of the top-level system. These thresholds discretise the variables, thus allowing LIFT to learn fault trees which model the root failure mechanisms of the system and are explainable. We obtain fault trees for the 11 failure variables, and evaluate them in two ways: quantitatively, with a significance score, and qualitatively, with domain specialists. Some of the fault trees learnt have almost maximum significance (above 0.95), while others have medium-to-low significance (around 0.30), reflecting the difficulty of learning from big, noisy, real-world sensor data. The domain specialists confirm that the fault trees model meaningful relationships among the variables.
FAILTURE AND MAINTENANCE OF AIRCRAFT LANDING GEAR
Authors: Li Faming , Maiorova Kateryna
Published: August 2022

The landing gear of the aircraft is related to the smooth take-off and landing of the aircraft, and is the most basic guarantee to ensure flight safety. Therefore, the maintenance of the aircraft landing gear is particularly important, and the aircraft maintenance technicians must do a good job in this area. In order to improve the quality of aircraft landing gear maintenance work, this paper summarizes the common faults of aircraft landing gear components, analyzes the main reasons for the failure, and puts forward relevant solutions for aircraft landing gear maintenance.
КОМ’ПЮТЕРНІ ПРОГРАМНІ ЗАСОБИ ТА ЇХ ВИКОРИСТАННЯ В МУЗИЧНІЙ ОСВІТІ
Authors: Варнавська Лариса , Сергєєва Вікторія
Published: August 2022

Широке впровадження в навчальний процес отримали нові педагогічні інформаційні технології, що є одним із завдань державної національної програми «Освіта. Україна ХХІ століття». Урок музичного мистецтва, у теперішній час, стає частиною розвитку всіх психічних процесів, музичних здібностей, музичного мислення. В роботі представлені можливості існуючих мультимедіа продуктів, розкриваються питання використання комп’ютерних програмних засобів у музичній освіті, надано алгоритм використання комп’ютерних платформ та програмних засобів у сучасній музичній освіті.
ЗВ’ЯЗОК МІЖ ФІЗИЧНОЮ АКТИВНІСТЮ ТА ВІРОГІДНІСТЮ РОЗВИТКУ ДЕПРЕСІЇ
Authors: Лактіонова Олена , Коляда Кирило , Фоменко Руслан , Тєрьошина Ірина
Published: August 2022

Депресія є одним з провідних факторів, що негативно впливають на якість життя та мають вагомий внесок в зменшенні рівня соціально-економічного розвитку. В профілактиці даного захворювання вагомий внесок належить фізичній активності, через що дослідження впливу останньої має актуальне значення навіть в наш час.
Pendekatan ‘Urf dalam Studi Islam (Adat Nyongkolan pada Suku Sasak dalam Studi Islam)
Authors: Parhi Nurmu'izzatin Zaharatul , Azzahidi Muhammad Rizwan
Published: August 2022

The ‘Urf approach in Islamic studies is to find out the content of Islamic teachings in a community custom in an area that takes place repeatedly. The purpose of this study to find out the value of Islamic contained in the culture of nyongkolan for the Sasak people in Lombok, where the meaning of nyongkolan is to announce marriage to the local community as in Islam which is announced to announce the news of marriage so that there is no slander in the future. This research method uses literature review, namely taking data source from books, applicable laws and the results of previous research in accordance with the current research theme. Understanding the ‘Urf approach in Islamic studies is like an effort to find out the regulations for registering marriages from a legal perspective in Indonesia. The provisions for marriage are regulated in Article (2) which reads “Every marriage is recorded according to the applicable laws and regulations”. From the provisions of article 2 it explains that every marriage must be recorded according to the applicable laws and regilations as the legal for each party concerned.
Pengaruh Penerapan Model Pembelajaran Problem Based Learning Berbasis Media Komik terhadap Hasil Belajar Siswa dalam Mata Pelajaran PPKn Kelas VIII di SMP Negeri 2 Lingsar
Authors: Fajri Laelatul , Herianto Edy , Sawaludin Sawaludin
Published: August 2022

This study aims to determine the influence of the application of the comic-based Problem Based Learning learning model on learning outcomes. The approach used is quantitative with a type of Nonequivalent Control. The research sample consisted of two classes, namely class VIII (6) and VIII (8) with Purposive Sampling techniques. The instrument used is a multiple choice test. Test The analysis requirements used for the normality test are the Liliefors Test and the homogeneity test using the variance test. For hypothesis testing using the sign test test. The results of the study obtained that P = 0.05 > the price of P(2) = 0.0002, then Ho was rejected, meaning that there was a significant influence in the influence of the application of the comic-based Problem Based Learning learning model on student learning outcomes in the subject of PPKn class VIII SMPN 2 Lingsar. The application of the comic-based Problem Based Learning learning model proves that there is an increase in student learning outcomes in ppkn subjects and in accordance with their learning objectives.
Predicting incidence of Crimean-Congo hemorrhagic fever using satellite monitoring (remote sensing) data in the Stavropol Territory
Authors: Dubyanskiy V. M. , Prislegina D. A. , Platonov A. E.
Published: August 2022

Introduction. With the epidemiological situation for Crimean-Congo hemorrhagic fever (CCHF) remaining tense in many countries worldwide, special attention should be focused on development and improvement of risk-based epidemiological prediction methods.The aim of the study was to build a prediction model for CCHF incidence dynamics (based on the Stavropol Territory) using satellite monitoring (remote sensing) data.Materials and methods. We analyzed the climate data obtained from the Space Research Institute of the Russian Academy of Sciences as well as the data of public statistics reports on CCHF incidence from 2005 to 2021. The prediction model incorporated the Bayes theorem and Wald sequential analysis. The information content of the factors was assessed using the Kullback method.Results. Predictions for each of 26 districts were made stepwise (compared to threshold levels) to predict whether there will be at least one case of CCHF, whether the relative incidence per 100,000 population will exceed the median level (0.9 cases) or the average rate (3.5 cases) or the third quartile rate (4.7 cases). The highest values of information coefficients were obtained for soil temperature and moisture content (at depths of 10 and 40 cm), normalized relative vegetation index, relative humidity, maximum and average air temperature, relative air humidity. During the testing of the model in 2021, false-negative (erroneous) prediction was made for 2 districts.Discussion. The model proved to be most efficient in prediction of occurrence or absence of cases. More accurate quantitative prediction may be difficult due to subjective factors (including misdiagnosing CCHF cases without hemorrhagic manifestations and administering treatment for other conditions with similar symptoms).Conclusion. The tests of the model demonstrate its potential. The practical application of the prediction will make healthcare workers more alert when screening and detecting CCHF cases.
Preclinical study of immunogenicity of adjuvanted quadrivalent subunit influenza vaccine
Authors: Krasilnikov I. V. , Ivanov A. V. , Nikolaeva A. M. , Belyakova O. V. , Shevchenko E. K. , Mikhailova N. A. , Leneva I. A. , Zverev V. V.
Published: August 2022

Background. Preventive vaccination is a vitally important strategic aspect of protection of the population against severe effects of influenza epidemics. The priority attention is given to development of effective tetravalent vaccines containing antigens of two influenza A lineages (H1N1, H3N2) and two influenza B lineages (Victoria and Yamagata) in combination with immunoadjuvants.The aim of the work was to conduct the preclinical study of the immunogenicity and protective efficacy of the innovative tetravalent subunit vaccine containing antigens of influenza A and B viruses as well as a corpuscular adjuvant.Materials and methods. The study was conducted using female BALB/c mice. The tetravalent vaccine and monovalent intermediate vaccines combined with a betulin adjuvant were injected intraperitoneally two times at a 14-day interval. The immunogenic activity was measured by the hemagglutination inhibition assay. The protective activity of the vaccine was assessed by changes in the viral load, body weight and survival rates using the mouse model of fatal influenza A H1N1 virus infection.Results. The mice vaccinated with the adjuvanted quadrivalent subunit influenza vaccine produced antibodies against all four influenza viruses included in the vaccine; the mean antibody titers in the hemagglutination inhibition assay were above 1 : 40. The second-dose vaccination induced a significant increase in levels of antibodies against all four influenza viruses. The dose of the quadrivalent subunit adjuvanted vaccine containing 5 µg of each antigen and 200 µg of the adjuvant provided a 100% survival rate in mice and significantly decreased lung viral titers (more than 3 lg TCID50) in the mouse model of influenza pneumonia.Conclusion. The quadrivalent subunit vaccine with the betulin-based corpuscular adjuvant demonstrates high immunogenicity in laboratory mice and provides protection against fatal pneumonia caused by the influenza A virus subtype H1N1.
Heterotic Groupings, Perse Performance and Standard Heterosis of Quality Protein Maize (Zea Mays L.) for Yield and Yield Contributor Traits Adapted at Mid Altitude of Ethiopia
Authors: Lemi Yadesa , Diro Debela
Published: August 2022

For an organized cross breeding program, information on heterotic grouping, perse performance, and commercial heterosis of newly introduced maize lines is required. Therefore, the present study was conducted to determine the heterotic group, commercial heterosis, perse and crosses mean performance of newly introduced from IITA-Nigeria and CIMMYT- Zimbabwe quality protein maize inbred lines. 36F1 progenies generated from the four testers and nine lines, and including four standard checks a total of 40 entries, and thirteen inbred lines were planted by using Alpha lattice design with three replications at Bako National Maize Research Center and Jimma Agricultural Research center in 2019/20 main cropping season. The combined analysis over the two locations showed there were significant differences at (P<0.01) or (P<0.05) between the genotypes in grain yield, and yield contributors of the studied traits. In this study, lines that showed positive SCA when crossed with tester A were assigned to the opposing heterotic group (group B), and vice versa, based on the significance of the SCA effects. This also suggests that these inbred lines could be placed in the same heterotic group as AB. From the study, L5 had the highest yield (3.6 t/ha) of the inbred lines, followed by L2 (3.13t/ha) and L7 (2.53t/ha) respectively were identified. Regarding to the crosses, Eight promising crosses, L2xT4, L3xT4, L4xT4, L5xT2, L6xT3, L7xT2, L9xT1, and L9xT4, with higher yield than the checks, were identified. For grain yield, about twelve crosses nine crosses showed positive and significant advantages over the standard check BH545 with range of (33.3% to-24.2%) were also observed. Multilocation evaluation, tryptophan and lysine content of these genotypes must be re-evaluated to confirm the findings of this study and to use in recurrent breeding program or for directly release of the promised crosses. In general, molecular based heterotic grouping is more effective in clarifying ............
Impact of Participation in Milk Processing on Smallholder Farmers’ Welfare: The Case of Kikima Dairy Cooperative Society in Makueni County, Kenya
Authors: Musyoki Onesmus Keli , Mburu John , Chumo Chepchumba
Published: August 2022

The productivity of the few established cash crops in Makueni County is affected by low rainfall reliability, which in turn leads to drought and crop failure. Thus, the dairy sector is a crucial source of livelihood for the residents in Makueni County. The dairy sector, however, is constrained by the lack of adequate processing capacity which has the potential to enhance the shelf life and retail price of milk. It’s for this reason that the Kikima dairy plant was established to provide a ready market for farmers’ milk and enhance the processing capacity within Makueni County. However, there is scanty empirical evidence on the impact this dairy plant has had on farmers’ welfare. The current study assessed the impact of participation in milk processing on farmers’ welfare in Makueni County using farm income as the welfare indicator. The study used primary data with a sample size of 200 respondents drawn from Mbooni and Kilome sub-counties in Makueni County. The respondents were stratified by participation and farmers were randomly selected from the two sampling frames to give a sub-sample of 100 project participants and 100 non-participants. Data were then analyzed using descriptive and inferential statistics. The endogenous switching regression model was used to analyze the impact. The results indicated a negative impact of participating in milk processing on farmers’ income.
Como a Tecnologia Poderia ser Aplicada para a Análise Qualitativa com Base na Teoria Fundamentada (Grounded Theory)?
Authors: Francislê Neri de Souza  , Dayse Neri de Souza
Published: August 2022

A teoria fundamentada foi proposta na década de sessenta e, desde então, tem sido modificada e adaptada nas mais diferentes áreas de estudo e técnicas de análise qualitativa. Neste artigo, iremos propor a integração das tecnologias para a análise qualitativa mais eficaz com base nos procedimentos da teoria fundamentada (Grounded Theory, GT). Para isso, propomos a integração do software webQDA® para os procedimentos de codificação aberta, axial e seletiva da GT entre várias vantagens operacionais e analítica. Assim, iremos apresentar uma discussão teórica sobre os fundamentos da teoria fundamentada e suas variações ao longo das últimas décadas. Depois introduziremos o software webQDA® e como ele pode ser usado em sete etapas transversais as várias necessidades analíticas que utilizam os pressupostos da GT: 1º) Preparação das fontes por ciclo de análise; 2º) Codificação Aberta; 3º) Codificação Axial, 4º) Codificação Seletiva; 5ª)   Depuração da Codificação Aberta através da “Pesquisa das Palavras frequentes” e “Pesquisa de Texto”; 6º) Repetição dos Passos 3 e 4 para aprofundamento da Codificação; 7º) Triangulação da Informação com as matrizes. Embora não seja o foco deste artigo, estas etapas têm sido aplicadas em diversas investigações que integram a GT com apoio do software webQDA®.
Ground-breaking Theory of Knowledge Representation Practices for Information Sharing in IT Organization
Authors: Radhika B.
Published: August 2022

Sharing information has become very important in the proper use of information assets, and the reason for this is that sharing information can be considered the most important part of an organization because information from organizations must be transferred and participated in order to be known and understood, wherein a clear and unambiguous information is considered a key criterion. To stimulate creativity, information sharing or integration is used to bring disparate pieces of knowledge together. Many current information sharing practices, such as training and development programs, IT systems, reports, official documents, and hard-working groups, are examples of integrating information. By integrating information everywhere to improve the quality of products and services, increases responsiveness to customer needs, develop new capabilities, and improve every aspect of the environment. This study reviews the ground-breaking theory behind information sharing in an organization. From the author’s perspective, this is the first study which gives a complete overview about knowledge representation.
DISPERSÃO URBANA E MODERNIZAÇÃO CAPITALISTA
Authors: Reis Nestor Goulart
Published: August 2022

No Brasil, as formas características da urbanização são hoje as da dispersão. O processo ocorre no quadro das grandes mudanças demográficas e da modernização capitalista, nas regiões metropolitanas e sub-metropolitanas e em núcleos isolados de maior porte, que reúnem hoje cerca de 60% da população urbana do país.
Convex Hull of Extreme Points in Flat Riemannian Manifolds
Authors: Mirzaie Reza , Rezaie Omid
Published: August 2022

We show that convex hull of extreme points of a closed convex subset of a compact
flat Riemannian manifold is equal to the subset itself.
Knowledge and Use Family Medicine Plants of Pasar 6th Village Kualanamu, Sumatera Utara
Authors: Safitri Riri , Munthe Novita Br Ginting
Published: August 2022

Medicinal plants are very beneficial for the health of the Indonesian people. Preservation of medicinal plants can be done in the yard of the house so that it can be said as a family medicinal plant. Most people know the knowledge of the benefits of family medicinal plants from their ancestral heritage. Pasar VI Kualanamau Village is one of the villages from the Beringin District, Deli Serdang Regency, where the community still uses and grows medicinal plants in their yards. Therefore, the purpose of this study was to determine the knowledge and utilization of medicinal plants in the Pasar VI Kualanamu village community. The method used in this study is the interview method using a questionnaire. Respondents who were included in this study were people who had an interest in family medicinal plants. The results of this study indicate that the majority of the people of Pasar VI Kualanamu Village know quite a lot of types of plants that are useful as medicine, namely 44 types of plants that are known by the community that function as medicinal plants and state that all types of medicinal plants consumed by the respondents are safe for consumption. The types of medicinal plants consumed most by respondents with a percentage value of 100% include turmeric (Curcuma longa), ginger (Zingiber officinale), Red Ginger (Zingiber officinale), and lemongrass (Cymbopogon citratus). Only a few types of medicinal plants were planted (cultivated) by the respondents themselves, not all types of medicinal plants consumed by the respondents were obtained from the results of their own cultivation (cultivation), some types of medicinal plants consumed were obtained from other communities who have these types of plants.
Utilization of Plant in the Panggih Temanten Traditional Rituals in Ogan Komering Regency Ulu Timur South Sumatera
Authors: Ulmillah Aulia , Saputri Dwijowati Asih , Kamelia Marlina , Baika Febta Dwi
Published: August 2022

One of the sub-districts in the East Ogan Komering Ulu (OKU) district of South Sumatra, namely Buay Madang Timur, the people are migrants (transmigrants), especially from the Javanese tribe and still preserve the traditional ritual of the Panggih Temanten marriage. The aim of the study was to determine the various kinds of plant families used in the traditional rituals of Panggih Temanten Javanese people in Buay Madang District, East OKU Regency, South Sumatra. This research is a qualitative type with sampling using purposive sampling and snowball sampling. Data collection through structured interviews to selected respondents. The results showed that there were 13 families consist of Arecaceae, Musaceae, Asparagaceae, Euphorbiaceae, Moraceae, Rosaceae, Annonaceae, Nyitaginaceae, Rubiaceae, Asteraceae, Magnoliaceae, Piperaceae, and Oleaceae. The plant patrs used include stem, flower and leaf
Potency of Ketapang (Terminalia catappa L.) Leaves Methanol Extract Against Pathogenic Bacteria of Catfish (Clarias batrachus L.)
Authors: Wibowo Risky Hadi , Darwis Welly , Sipriyadi Sipriyadi , Wahyuni Reza , Sari Dhea Amelia , Silvia Elsi , Adriansyah Aulia , Trianda Aldy , Setiawan Redo
Published: August 2022

Ikan lele (Clarias batrachus L.) merupakan salah satu spesies penting sebagai komoditas air tawar di Indonesia dengan produksi yang terus meningkat setiap tahunnya. Namun, ikan lele rentan terhadap beberapa infeksi bakteri, terutama bila dipelihara dalam kondisi kepadatan tinggi, salah satunya oleh bakteri patogen Bacillus cereus. Banyak sumber bahan baku lokal yang dapat dimanfaatkan sebagai pakan ikan untuk mengatasi masalah tersebut dan mengatasi penyakit yang muncul pada budidaya ikan, salah satunya adalah tanaman tradisional ketapang (Terminalia catappa L.) yang merupakan tanaman yang memiliki potensi sebagai zat antibakteri. Tujuan penelitian ini untuk mengetahui dan menguji aktivitas antibakteri ekstrak daun ketapang (T. catappa L.) terhadap bakteri patogen B. cereus dari isolat hati ikan lele (Clarias batrachus L.) penyebab penyakit pada budidaya. Metode yang digunakan yaitu maserasi dengan pelarut metanol perbandingan 1:10 yang dimaserasi 7 x 24 jam. Uji aktivitas antibakteri dengan metode cakram difusi dengan konsentrasi 45%, 52,5%, 60%, 67,5%, dan 75%. Hasil uji aktivitas antibakteri ekstrak daun ketapang mampu menghambat pertumbuhan bakteri B. cereus pada konsentrasi 45% dengan rata-rata diameter zona hambat sebesar 13,51 mm (kategori kuat). Dari hasil yang diperoleh, dapat disimpulkan bahwa ekstrak daun ketapang memiliki kemampuan dalam menghambat pertumbuhan bakteri patogen B. cereus  penyebab penyakit pada hati ikan lele (C. batrachus L.)
Double-image encryption scheme based on the phase-truncated multiple-parameter Fresnel transform
Authors: Ling Zhou  , _  , Hang Zhou  , Yan Ma  , Nan-Run Zhou
Published: August 2022

A double-image encryption algorithm is proposed with the phase-truncated multiple-parameter Fresnel transform. Firstly, the pixel positions of two plaintext images are scrambled and then the results are merged into one image with the scrambling operation. Subsequently, the resulting image is encrypted by phase truncation and phase reservation in the multiple-parameter Fresnel transform domain. The phase information is scrambled by the affine transform and then recombined with the amplitude information. The final encryption image is obtained with the pixel scrambling and diffusion methods to further enhance the security of the image encryption system, where the scrambling and diffusion operations are based on logistic map, logistic-sine system and 2D logistic-adjusted-sine map. The image encryption scheme is robust against the common attacks due to the nonlinear properties of diffusion and phase truncation. Numerical simulation results verify the performance and the security of the proposed double-image algorithm based on the phase-truncated multiple-parameter Fresnel transform.
Light scattering by horizontally oriented square pyramid in the Wentzel–Kramers–Brillouin approximation
Authors: Tari El Mostafa , Bahaoui Abdelhadi , Lamsoudi Redouane , KhouilidKhouilid Mohammed , Ibnchaikh Mohamed
Published: August 2022

In this research, we studied the sensitivity of the form factor of a pyramidal ice crystal in the Wentzel–Kramers–Brillouin (WKB) approximation to its geometrical characteristics: the shape, spatial orientation, aspect ratio and size parameter. Using the WKB method, we derive an analytical formula of the form factor of horizontally oriented square pyramid. We will begin this work by applying the WKB approximation to the case of a particle which rotates about its main axis. Then, we will move to deal with the case of a particle which rotates about an axis perpendicular to its main axis in a future work. In addition, the coefficient of extinction is also given. To illustrate our analytical results, some numerical examples are analyzed.