bluuebunny/crossref_metadata_2025 huggingface dataset:
DETERMINAN UNMET NEED PADA WANITA USIA SUBUR MENIKAH DI KAWASAN INDONESIA TIMUR
Authors: Afifatul Ilma Widyatami  , Galuh Sri Natungga  , Riska Damayanti  , Seli Eria Dewi  , Tiodora Hadumaon Siagian
Published: July 2022

Jumlah penduduk yang tidak terkontrol merupakan tantangan bagi suatu negara khususnya negara berkembang. Berdasarkan hasil Sensus Penduduk 2020, jumlah penduduk Indonesia mencapai 270,2 juta jiwa. Melalui program Keluarga Berencana (KB), pemerintah menginginkan pemerataan dalam menekan laju pertumbuhan penduduk di seluruh Indonesia. Salah satu kendala suksesnya program ini adalah unmet need, yaitu kebutuhan untuk ber-KB yang tidak dapat terpenuhi. Hal tersebut tentu beresiko menyebabkan kehamilan yang tidak diinginkan. Penelitian ini bertujuan untuk melihat determinan unmet need pada wanita usia subur menikah menggunakan metode Regresi Logistik Biner. Data yang digunakan bersumber dari Survei Demografi dan Kesehatan Indonesia tahun 2017 dan memfokuskan penelitian pada kawasan Indonesia timur. Hasil penelitian menunjukkan bahwa pulau tempat tinggal, umur, jumlah anak, pendidikan suami, dan status bekerja wanita signifikan berpengaruh pada kejadian unmet need.
PERUBAHAN TOPIK MEDIA TENTANG PROGRAM BERENCANA PASCAREBRANDING BKKBN: PENDEKATAN PEMODELAN TOPIK DIGITAL
Authors: Yudhi Dwi Fajar Maulana
Published: July 2022

Di akhir tahun 2019, Badan Kependudukan dan Keluarga Berencana Nasional (BKKBN) melakukan kebijakan rebranding. Kebijakan rebranding bertujuan untuk merespon perubahan lingkungan strategi pelaksanaan program KB di Indonesia. Dengan pelaksanaan kebijakan tersebut, penelitian ini melakukan pengamatan perubahan topik pembahasan terkait program Keluarga Berencana (KB) dan BKKBN di media internet, dengan memanfaatkan teknik topic modelling. Tujuan dari penelitian ini adalah memberikan informasi kepada BKKBN terkait topik-topik apa saja yang berkembang di internet dan bagaimana perubahan topik terkait program KB dan BKKBN dari masa sebelum dan sesudah rebranding. Dari total 3.252 artikel/berita yang berhasil terkumpul, selanjutnya diproses memanfaatkan algoritma Latent Dirichlet Allocation (LDA) untuk menghasilkan masing-masing sepuluh topik yang paling populer pada periode sebelum dan sesudah rebranding. Pengolahan data menghasilkan beberapa informasi, diantaranya topik terkait “Generasi Berencana” merupakan topik paling populer pada masa setelah rebranding, kondisi ini sejalan dengan arah perubahan yang diinginkan BKKBN melalui rebranding, yaitu dengan menyasar para generasi muda, milenial, zilenial, dan alpha. Beberapa topik baru terkait program KB yang muncul pada masa setelah rebranding adalah topik “jabatan fungsional”, “program bangga kencana”, “program bangga kencana di kampung KB”, “media sosial”, dan “pembangunan keluarga di masa pandemi”.
PENGARUH FAKTOR KARAKTERISTIK WANITA USIA SUBUR DAN PASANGANNYA TERHADAP JARAK KELAHIRAN ANTARA ANAK PERTAMA DENGAN KEDUA DI INDONESIA (ANALISIS DATA SDKI 2017)
Authors: Bambang Eko Cahyono
Published: July 2022

ABSTRAK

Jarak kelahiran adalah bagian dari kesehatan reproduksi. Jarak kelahiran sangat berpengaruh terhadap kondisi ibu dan anak. Jarak kelahiran yang baik adalah 24–60 bulan. Semakin pendek atau semakin jauh jarak kelahiran dapat berisiko terhadap kesehatan ibu dan anak. Tujuan penelitian ini adalah untuk mengetahui pengaruh faktor-faktor terpilih terhadap jarak kelahiran. Penelitian ini menggunakan data sekunder hasil Survei Demografi Kesehatan Indonesia (SDKI) 2017. Sampel penelitian ini adalah Wanita Usia Subur, usia 15-49 tahun yang pernah melahirkan dengan minimal 2 anak lahir hidup. Variabel dependen (tidak bebas) penelitian ini adalah jarak kelahiran anak pertama dan kedua yang dikategorikan menjadi ideal (24-60 bulan) dan tidak ideal (<24 bulan) sedangkan jarak >60 bulan tidak dimasukan dalam penelitian ini, serta tujuh variabel bebas yaitu lokasi tempat tinggal, pasangan/ suami bekerja, jenis kelamin anak pertama, pemakaian KB saat lahir anak, tingkat kekayaan atau kesejahteraan, jumlah anak ideal, umur responden ketika melahirkan anak pertama. Penelitian ini menggunakan metode analisis regresi logistik biner. Hasil analisis bahwa enam variael bebas mempunyai pengaruh yang signifikan (p<0,05) namun hanya variabel lokasi tempat tinggal yang tidak berpengaruh secara signifikan (dengan nilai p>0,05). Jarak kelahiran terkait dengan kesehatan reproduksi dan berperan penting terhadap kondisi kesehatan ibu dan anak yang dilahirkan, hasil penelitian ini dapat menjadi masukan bagi pembuat kebijakan untuk meningkatkan program kesehatan ibu dan anak.
Pengaruh Digital Marketing, Kepercayaan, dan Budaya Populer Terhadap Keputusan Pembelian Michuu Coffee
Authors: Cahyaputeri Regitha , Pahar Bruno Hami
Published: July 2022

The influence of globalization in Indonesia is felt and evidenced by the many foreign cultures that enter Indonesia, especially in Surabaya. More and more young entrepreneurs in Surabaya are working in the culinary field, especially foreign culinary. One of the foreign culinary businesses in Surabaya is Michuu Coffee Pakuwon City Surabaya which was established in 2019. Michuu coffee here offers South Korean food and beverage products that are in high demand these days. The purpose of this study is to know the impact of digital marketing, trust, and popular culture on decision purchases of michuu coffee. The population of this study is the consumer who make purchases at Michuu Coffee, where the number of samples is 75 respondents and the sampling technique is purposive sampling. On the validity test it is obtained results that all stated statement items are valid because r count > r tables (1.994) so that they can be used to help with this research. In the reliability test, all variables have Cronbach's Alpha results > 0.6 so that they are declared reliable. Then, in the classical assumption test with the normality test in this study, it is said to be normally distributed. In the multicollinearity test in this study, there was no multicollinearity. In the  heteroscedasticity test in this study, there were no symptoms of  heteroscedasticity. The multiple linear regression equation in this study is Y = -0.774 + 0.141 X1 + 0.503 X2 + 0.486 X3. In the coefficient of determination test in this study, having an adjusted R square value of 0.54 or 54% indicates that digital marketing, trust, and popular culture have a moderate contribution to purchasing decisions at Michuu Coffee. In the t-test, it was found that digital marketing variables (X1), trust (X2), and popular culture (X3) had a significant effect on purchasing decisions at Michuu Coffee.
Analisis Rasio Perpajakan Badan Usaha Sub Sektor Telekomunikasi Sebelum Dan Saat Covid-19
Authors: Lim Setiadi Alim
Published: July 2022

This study aims to examine whether there are differences in the profitability performance of the telecommunications sub sector business entities on the Indonesia Stock Exchange in the period before the occurrence of Covid-19 and during the occurrence of Covid-19. To measure the profitability performance used 12 taxation ratios and 2 other important profitability ratios. These ratios are calculated using data from the financial statements of telecommunication sub sector business entities on the Indonesia Stock Exchange in 2018-2021. For conditions prior to the occurrence of Covid-19, financial report data for 2018 and 2019 are used and for conditions during the occurrence of Covid-19, financial report data for 2020-2021 are used. The ratio data obtained were tested for normality using the Kolmogorov-Smirnov and Shapiro-Wilk methods. Ratios whose data before and during the occurrence of Covid-19 are normally distributed will be subjected to a Paired Samples T Test to determine whether there is a significant difference in values before and during the occurrence of Covid-19. Meanwhile, for ratios whose data are not normally distributed, the Wilcoxon Signed Rank Test is carried out to determine whether there is a significant difference in values before the occurrence of Covid-19 and during the occurrence of Covid-19. This study shows that there are 2 different ratios, namely Gross Profit Margin (GPM) and Rent/Sales (S/P) in the period before and during the Covid-19 outbreak. While the other 12 ratios are Pretax Profit Margin (PPM), Net Profit Margin (NPM), Corporate Tax to Turn Over Ratio (CTTOR), Operating Profit Margin (OPM), Return on Equity (ROE), Return on Assets (ROA), Depreciation/Sales (P/P), Interest/Sales (B/P), VAT/Sales (PPN/P), Salary/Sales (G/P), Non Operating Income/Sales (PLU/P), and Non Operating Expense/Sales (BLU/P) did not show any difference between before and during the Covid-19 outbreak.
Pengaruh E-Trust Dan Perceived Value Terhadap Repurchase Intention Pada E-Commerce Shopee
Authors: Amadea Audrey , Herdinata Christian
Published: July 2022

Electronic Commerce (e-commerce) is a transaction of buying and selling goods or services carried out between companies, households, individuals, governments and communities or other organizations that is carried out online. Consumer confidence in using e-commerce has increased from year to year. This can be seen from the increasing number of visits and transaction value. The increase in the number of visits and transactions that occurred during the pandemic led to an increase in consumer complaints in the e-commerce sector. The increasing number of transactions made online requires e-commerce companies to pay attention to several factors that can affect customer repurchase intention. Repurchase intention is an important factor for a  company to be able to increase sales. In increasing customer repurchase intention, there are several influential variables, namely e-trust and perceived value variables. This study aims to determine the effect of e-trust and perceived value on repurchase intention in e-commerce Shopee. The population of this study are Shopee users. The sample in this study was taken using purposive sampling method as many as 120 respondents. The criteria used in this study include: (1) Shopee users aged 17 to 65 years; (2) Consumers who have made purchases at Shopee at least 10 times in the last 1 year, from April 2021 to March 2022. This study uses multiple linear regression analysis techniques. The results showed that e-trust had a significant effect on repurchase intention. These results indicate that the higher the e-trust perceived by the customer, the more often the customer will repurchas e intention on Shopee's e-commerce. The results of this study also show that perceived value has a significant effect on repurchase intention in Shopee e-commerce. This significant effect shows that if the customer feels and gets the benefits in accordance with expectations, the customer will repurchase intention.
Pengaruh Harga, Kualitas Produk, Dan Citra Merek Terhadap Keputusan Pembelian Produk Breadtalk
Authors: Indarto Laurencia Angela , Ayu Stephanie Astrid
Published: July 2022

This study is a quantitative study that aims to determine the effect of price, product quality, and brand image on purchasing decisions for BreadTalk products at the Galaxy Mall Surabaya BreadTalk Outlet. The sampling method is purposive sampling using questionnaires distributed to 75 respondents who are consumers of BreadTalk products who are 17 years old and over and have bought BreadTalk products. The results of the validity test show that all statement items are declared valid with a calculated r value > r table 0.2272. The results of the reliability test showed that all variables were declared reliable with the value of Croanbach's alpha > 0.6. The normality test showed that the data were normally distributed with a significance value of Asymp. Sig (2-tailed) of 0.200 is greater than 0.05. The multicollinearity test shows that this regression model does not experience multicollinearity because the tolerance value is > 0.10 and the VIF value is < 10. The heteroscedasticity test shows that this regression model does not experience symptoms of heteroscedasticity because the plot does not form a regular pattern. Multiple linear regression test produces the formula Y = 4.642 + 0.122 X1 + 0.507 X2 + 0.580 X3. The coefficient of determination shows that the independent variable provides a moderate contribution of 0.401 or 40.1% to the purchasing decision variable. The t-test in this study resulted in the price variable (X1) on purchasing decisions (Y) resulting in a t-count value of 0.606 < t table 1.99394 with a significant level of 0.546> 0.050 meaning that the price had no effect on purchasing decisions, the product quality variable (X2) on purchasing decisions (Y) produce a t-count value of 3.480 > t-table 1.99394 with a significant level of 0.001 <0.050 meaning that product quality has a significant effect on purchasing decisions, the brand image variable (X3) on purchasing decisions (Y) produces a tvalue of 3.204 > ttable 1.99394 with a significant level of 0.002 < 0.050 meaning that brand image has a significant effect on purchasing decisions.
Children’s affiliation toward peers reflected in their picture drawings
Authors: Shinohara Asami , Narazaki Miyabi , Kobayashi Tessei
Published: July 2022

Previous studies have demonstrated that a picture-drawing task can be an indicator of the affiliation children have with their peers. When a child draws himself/herself along with a peer, the distance between them is assumed to represent the extent of the affiliation held by the child toward the peer: the shorter the distance is, the more affiliation the child has. However, some issues remain before the picture-drawing task is established as a way to measure children’s affiliation, including the possibility that the instructions might bias the children's responses (Thomas & Gray, 1992), and inconsistency over where to measure in the children’s drawings (e.g., Song et al., 2015). In this study, we focused on the above two issues and addressed whether the picture-drawing task can be used for measuring children’s affiliation toward peers. We conducted our study in Japanese nursery schools with 3- to 6-year-old children (N = 676), who drew pictures of themselves and a classmate. Teachers rated how much the children had played with the drawn peer. We found that the more a child had an affiliative relationship with a peer, the shorter the distance between the drawn child and peer was when measuring the closest points and the center between the two drawn figures. Our research sheds light on the validity of the picture-drawing task for measuring children’s affiliation.
Measurement Model and Adaptation of Self-Efficacy toward Mathematics Reasoning among University Students
Authors: Chan Choon Tak , Eu Leong Kwan , Zulnaidi Hutkemri
Published: July 2022

Mathematics self- efficacy is generally defined as individuals' beliefs or perceptions regarding their mathematical abilities. The aim of this quantitative study was to conduct a validity analysis of a self- efficacy instrument toward mathematics reasoning among 184 undergraduate public university students. Students clearly distinguished between their self-efficacy in doing and understanding mathematics reasoning and their self-efficacy in accomplishing assignments in their university mathematics lesson. In these quantitative studies, self-efficacy which demonstrated convergent and discriminant validity was performed, which corresponded to the Bandura theory and included three dimensions: course self-efficacy, exam self-efficacy, and future self-efficacy. The research design utilized casual correlation technique to investigate the effect of self-efficacy on mathematics reasoning. The reliability analysis of Cronbach Alpha internal consistency reliability revealed that self-efficacy instrument that was constructed was extremely reliable and can be utilized by researchers to measure university students' self-efficacy toward mathematical reasoning.
Student Centered Post Covid Teaching Using Asynchronous Platform in Malaysia Polytechnic
Authors: Ismail Siti Faridah , @Hamsan Rohani Ahsan , Bakar Elmi Abu
Published: July 2022

This paper is focusing on the Engineering Mathematics course that was conducted on an online platform due to the Pandemic of Covid-19. Mathematics instructors are being forced to digitize their course materials, such as videos of lecture topics over the Internet, but lack a detailed survey that addresses how students interact with course content, the tools available during class, and the available equipment at home. This presence challenge has been encountered through before and after class surveys to close the gap on the abovementioned issue through online learning. Throughout this study, the needs of students of the various departments involved were taken into account for the calculation of their satisfaction feedback that was investigated. The survey results also indicate that the problem of Internet coverage over time no longer exists for most students. Only the result of audio equipment instability due to the non-standard good quality of the equipment used during the online learning course was rated 18.3% out of 100%. The engineering mathematics content was delivered as planned and no critical learning issues were identified.
DWT based Image Super Resolution using Segmentation and Edge Detection
Authors:   Research Scholar, Bengaluru, VTU, India., Kiran Prathibha , Jabeen Fathima ,   Islamiah Institute of Technology, Bengaluru, VTU, India
Published: July 2022

An image super-resolution is the development of creating a high-resolution image from low-resolution images for better image visualization for several recent applications. In this research paper, we propose DWT-based Image Super Resolution using Segmentation and Edge Detection for better picturing of images. The different kinds of colore images are considered and converted into greyscale images and resized to a uniform size of 166x304. The Discrete Wavelet Transform (DWT) is used to get one low-frequency and three high-frequency bands with a size of 83x152. The four bands are fused and dividing each coefficient by two to get Low Resolution (LR) images. Each coefficient of the LR image is inflated into 2x2 coefficients to get High Resolution (HR) image. The HR matrix is segmented into a 3x3 overlapped matrix and an average value is calculated and assigned to the whole HR matrix. The Canny edge detection is used on the original image to get the edge detected image. The pixel values of HR and canny edge detected images are compared and high-value coefficients are considered. The guided filter is applied to the highvalue coefficients matrix to improve the quality of the image by refining the image. The LL band of the DWT matrix is padded with zeros to convert matrix size to 166x304 and Inverse Discrete Wavelet Transform (IDWT) is used on it. The refined and IDWT images are merged by computing the average values to acquire Super Resolution (SR) image. It is noted that the anticipated system results are enhanced compared to current methods. Keywords: DWT, Fusion, Image Processing, Segmentation, Super Resolution
The Efficacy of Mesenchymal Stem Cells loaded in Acacia Gum Hydrogel and Acacia Gum Hydrogel on Skin Wounds Healing in Rats
Authors: Alhayani Wissam Abdullah
Published: July 2022

Cutaneous wound healing processes start at the beginning of the trauma leading to impairment of physical and functional tissue continuity. The present work aimed to clarify the efficacy of stem cells loaded in acacia gum hydrogel and acacia gum hydrogel on skin wound healing in rats. Thirty-six adult male rats (Wister rats). The weight of the rats was estimated between 150-160 grams and the animals were divided into three groups (n=12). In Group A (control group), the surgical skin wound was established and treated with normal saline only. Group B: surgical skin wound was made and covered with Acacia gum hydrogel. Group C: surgical skin wound was made and covered with mesenchymal stem cells loaded in Acacia gum hydrogel. Examination of wound healing on days 3, 7, 14 and 21 for gross and microscopic pathological changes. The gross pathological evaluation showed no significant difference between all groups but the histopathological result showed the Acacia gum improved wound recovery better than the control group, although the wound was not completely closed on day 21 in Acacia gum and control groups contrary to the stem cells treated group, which showed complete wound closure. The best ever histopathological result of wounds healing in mesenchymal stem cells loaded in acacia gum hydrogel treated groups.
Estimation of the Nitrite Concentration in the Raw Milk and Locally Produced Soft Cheese in Different Area of Baghdad, Iraq
Authors: Al-Shuwaili Mahdi Abed Rabba , Khudhir Zina Saab
Published: July 2022

Samples for both raw milk and locally produced soft cheese totally (150), 75 for each were collected from different regions of Baghdad from October 2020 to July 2021 to estimate nitrite concentration. Ion exchange chromatography was used to detect the nitrite levels in the samples. The Limit of Detection (LOD) and Limit of Quantification (LOQ) were 0.5 mg/L and 1.7 mg/L respectively. The levels of nitrite in the samples of raw milk were (0.5-1.5 mg/L) with average (0.9 ± 0.4 mg/L), while the concentrations were (0.8-2.3 g/kg) in the soft cheese samples with average (1.4 ± 0.4 g/kg). The nitrite level in the soft cheese was higher than in the raw milk according to the months significantly (P<0.05). The presence of nitrite in milk and cheese indicates a poorness of hygiene practices during milking and post-milking operations, as well as during cheese production.
Assessment of the Cervical Spine Muscular Corset Functional State after the Surgical Treatable
Authors: Chesnikova Ekaterina I. , Savelieva Ekaterina M. , Eremushkin Mikhail A.
Published: July 2022

Aim. To compare the results of testing on the David G140 and G160 simulators of patients 6 months after surgical treatment for degenerative lesions of the cervical spine with rehabilitation for a period of 3–4 months after surgical treatable included, with the
results of patients 6 months after surgical treatable without rehabilitation.
Material and methods. The study involved 28 patients. Among these: 15 patients had previously undergone rehabilitation for a period of 3–4 months after surgical treatable, 13 patients didn’t have prior rehabilitation. During testing, the range of motion in the cervical region and the strength characteristics of the extensor muscles, lateral flexors and rotators of the cervical spine were evaluated.
Results. The results of patients who had undergone rehabilitation for a period of 3–4 months were better than of those patients without rehabilitation.
Conclusion. The study allows us to conclude that it is important to test the muscles of the cervical region in order to assess their strength characteristics for the correct construction of the rehabilitation process in the postoperative period.
The Physical Factors Application in Rehabilitation Programs for Patients after Total Knee Replacement
Authors: Kulchitskaya Detelina B. , Fesyun Anatoliy D. , Samoilov Alexander S. , Kolbakhova Svetlana N.
Published: July 2022

Total knee replacement (TKR) surgery has been performed in increasing number of patients in recent years. Postoperative complications often occur despite the improvement of the technique for performing this surgical intervention. All of the above confirms the need for the development and implementation of modern rehabilitation programs for patients after TKR.
Aim. To substantiate scientifically the feasibility of the combined use of cryotherapy and electrical stimulation in patients after TKR.
Material and methods. We examined 90 patients who were admitted 3 months after TKR and were randomized into 3 groups. In the first group – 30 subjects received electrical stimulation of the quadriceps muscles and carried out therapeutic exercises for a course of 10 procedures. In the second group – 30 subjects received electrical stimulation of the quadriceps muscles and air cryotherapy, performed therapeutic exercises for a course of 10 procedures. In the third group – 30 people were given physical therapy classes only.
Results. From the standpoint of the ICF, it has been proven that the physical factors application in the complex treatment of the above patients’ category contributes to the improvement of “b 710 – the function of joint mobility”. This is confirmed by the operated joint function improvement according to the KSS scale, microcirculation state enhancement, and the decrease in pain syndrome according to the VAS. The mobility level advance was revealed when evaluating the effectiveness of the proposed rehabilitation programs in the domain “d 450-walking” based on the ICF. When assessing the domain “d 5-self-service”, the HAQ questionnaire data indicate an increase in the ability to perform most activities in everyday life. However, more statistically significant results were obtained in patients after a course of quadriceps electrical stimulation, air cryotherapy and therapeutic exercises.
DETERMINATION OF THE ANTIPROLIFERATIVE EFFECT OF Folliculj Sennea USED AS A LAXATIVE ON CCD-18Co CELL LINE AND PROLIFERATIVE EFFECT ON DLD-1 AND HT-29 CANCER CELL LINES
Authors: KESKİNER Aybüke Afra , KOCAMAN Berna
Published: July 2022

The most prominent feature of malnutrition that increases colon cancer is the use of laxatives. Most community-dwelling individuals self-manage the condition in bowel-related diseases and do not seek medical advice. Self-management often involves the use of laxative products that can be purchased over the counter from pharmacies and elsewhere. According to the researches, most of those who use herbal products do not get enough information about the products they use, and the most important problem is that they do not inform their health consultants (doctor, pharmacist, dietitian, nurse, etc.) about the product they use. Individuals get information about the product they use from transfers, uncontrolled media channels and the internet, and they reach the product easily. Long-term use of laxatives is predicted to impair healthy colonic function, produce laxative dependence, and damage the enteric nervous system and/or intestinal smooth muscle. It manages colon motility and may increase the risk of other types of cancer, especially colon cancer. In our study, the antiproliferative effect of Folliculj sennae plant, which is commonly used as a laxative, known as fasting herb, horseradish herb and camel eye herb and contains anthranoid laxative, on CCD-18Co (healthy colon epithelium) cell line and DLD-1 (colon cancer) and HT- 29 (colorectal cancer) cancer cell lines, on the other hand, aimed to determine its proliferative effect by MTT analysis.
Striking Balance between Two Extremes: COVID-19 Pentecostal Annotations and Government’s Response-Actions in Nigeria
Authors: Adefisoye Taiwo Oladeji , ALADEGBOLA Isaac Adegbenga
Published: July 2022

The outbreak of the coronavirus disease (COVID-19) and subsequent government’s response-actions generated fascinating reactions and interpretations from different quarters in Nigeria. The country’s vibrant socio-political and religious spaces were inundated by a series of interpretations, thoughts and opinions, especially by prominent clergies from the Pentecostal Christian faith. Five perspectives emerged: the divinely-permitted pandemic/punishment perspective, the eschatological perspective; the Satanic-orchestration perspective; the conspiracy perspective; and the pragmatist’s perspective. This article examines the thrusts, strengths and limitations of these perspectives in the light of scientific explanations of the global outbreak of COVID-19 and government’s response-actions in Nigeria. The standpoint was used as the theoretical underpinning for the study, while the argument was based on secondary sources, including audio/visual sermons/addresses of various clergies on the subject matter. These were content-analysed and subjected to historical and descriptive methods. Findings show that while some of the claims and interpretations by proponents of the perspectives were labelled ‘unscientific’, unverifiable, outrageous and premised on sentiments, such claims went a long way to shape beliefs, public perception and disposition to the pandemic and subsequent measures by the government. It was concluded that such overriding influence ought to have been leveraged by the government to achieve compliance with its measures and manage the pandemic regarding its spread and the administration of vaccines.
The Curious Case of the “Heartworm” Nebula
Authors: Cotton W. D. , Camilo F. , Becker W. , Condon J. J. , Forbrich J. , Heywood I. , Hugo B. , Legodi S. , Mauch T. , Predehl P. , Slane P. , Thompson M. A.
Published: July 2022

The curious Galactic features near G357.2−0.2 were observed with the MeerKAT radio interferometer array in the UHF and L bands (0.56–1.68 GHz). There are two possibly related features: a newly identified faint heart-shaped partial shell (the “heart”), and a series of previously known but now much better imaged narrow, curved features (the “worm”) interior to the heart. Polarized emission suggests that much of the emission is nonthermal and is embedded in a dense plasma. The filaments of the worm appear to be magnetic structures powered by embedded knots that are sites of particle acceleration. The morphology of the worm broadly resembles some known pulsar wind nebulae (PWNe) but there is no known pulsar or PWN which could be powering this structure. We also present eROSITA observations of the field; no part of the nebula is detected in X-rays, but the current limits do not preclude the existence of a pulsar/PWN of intermediate spin-down luminosity.
Modeling the Transport of Relativistic Solar Protons along a Heliospheric Current Sheet during Historic GLE Events
Authors: Waterfall Charlotte O. G. , Dalla Silvia , Laitinen Timo , Hutchinson Adam , Marsh Mike
Published: July 2022

There are many difficulties associated with forecasting high-energy solar particle events at Earth. One issue is understanding why some large solar eruptive events trigger ground-level enhancement (GLE) events and others do not. In this work we perform 3D test particle simulations of a set of historic GLEs to understand more about what causes these powerful events. Particular focus is given to studying how the heliospheric current sheet (HCS) affects high-energy proton transport through the heliosphere following an event. Analysis of ≥M7.0 flares between 1976 and 2020 shows that active regions located closer to the HCS (<10°) are more likely to be associated with a GLE event. We found that modeled GLE events where the source region was close to the HCS also led to increased heliospheric transport in longitude and higher count rates (when the Earth was located in the drift direction). In a model that does not include perpendicular diffusion associated with turbulence, the HCS is the dominant mechanism affecting heliospheric particle transport for GLE 42 and 69, and varying other parameters (e.g., a narrow, 10°, or wider, 60°, injection width) causes little change. Overall in our model, the HCS is relevant in 71% of our analyzed GLEs, and including it more accurately reproduces observed intensities near Earth. Our simulations enable us to produce model profiles at Earth that can be compared to existing observations by the GOES satellites and neutron monitors, as well as for use in developing future forecasting models.
Eliminating Primary Beam Effect in Foreground Subtraction of Neutral Hydrogen Intensity Mapping Survey with Deep Learning
Authors: Ni 倪 Shulei 书磊 , Li 李 Yichao 毅超 , Gao 高 Li-Yang 立扬 , Zhang 张 Xin 鑫
Published: July 2022

In neutral hydrogen (H i) intensity mapping (IM) survey, foreground contamination on cosmological signal is extremely severe, and systematic effects caused by radio telescopes further aggravate the difficulties in subtracting foreground. We investigate whether the deep-learning method, the 3D U-Net algorithm, can play a crucial role in foreground subtraction when considering the systematic effect caused by the telescope’s primary beam. We consider two beam models, i.e., the Gaussian beam and Cosine beam models. The traditional principal component analysis (PCA) method is employed as a preprocessing step for the U-Net method to reduce the map dynamic range. We find that in the case of the Gaussian beam, the PCA method can effectively clean the foreground. However, the PCA method cannot handle the systematic effect induced by the Cosine beam, and the additional U-Net method can improve the result significantly. To show how well the PCA and U-Net methods can recover the H i signal, we also derive the H i angular power spectrum and H i 2D power spectrum after performing foreground subtraction. It is found that in the case of Gaussian beam, the concordance with the original H i map using U-Net is better than that using PCA by 27.4%, and in the case of Cosine beam, the concordance using U-Net is better than that using PCA by 144.8%. Therefore, the U-Net–based foreground subtraction can efficiently eliminate the telescope primary beam effect and shed new light on recovering H i power spectrum for future H i IM experiments.
Search for Supernova Neutrinos and Constraint on the Galactic Star Formation Rate with the KamLAND Data
Authors: Abe S. , Asami S. , Eizuka M. , Futagi S. , Gando A. , Gando Y. , Gima T. , Goto A. , Hachiya T. , Hata K. , Hosokawa K. , Ichimura K. , Ieki S. , Ikeda H. , Inoue K. , Ishidoshiro K. , Kamei Y. , Kawada N. , Kishimoto Y. , Koga M. , Kurasawa M. , Maemura N. , Mitsui T. , Miyake H. , Nakahata T. , Nakamura K. , Nakamura K. , Nakamura R. , Ozaki H. , Sakai T. , Sambonsugi H. , Shimizu I. , Shirai J. , Shiraishi K. , Suzuki A. , Suzuki Y. , Takeuchi A. , Tamae K. , Watanabe H. , Yoshida Y. , Obara S. , Ichikawa A. , Yoshida S. , Umehara S. , Fushimi K. , Kotera K. , Urano Y. , Berger B. E. , Fujikawa B. K. , Learned J. G. , Maricic J. , Axani S. N. , Winslow L. A. , Fu Z. , Smolsky J. , Efremenko Y. , Karwowski H. J. , Markoff D. M. , Tornow W. , Li A. , Detwiler J. A. , Enomoto S. , Decowski M. P. , Grant C. , Song H. , O’Donnell T. , Dell’Oro S.
Published: July 2022

We present the results of a search for core-collapse supernova neutrinos, using long-term KamLAND data from 2002 March 9 to 2020 April 25. We focus on the electron antineutrinos emitted from supernovae in the energy range of 1.8–111 MeV. Supernovae will make a neutrino event cluster with the duration of ∼10 s in the KamLAND data. We find no neutrino clusters and give the upper limit on the supernova rate to be 0.15 yr−1 with a 90% confidence level. The detectable range, which corresponds to a >95% detection probability, is 40–59 kpc and 65–81 kpc for core-collapse supernovae and failed core-collapse supernovae, respectively. This paper proposes to convert the supernova rate obtained by the neutrino observation to the Galactic star formation rate. Assuming a modified Salpeter-type initial mass function, the upper limit on the Galactic star formation rate is <(17.5–22.7) M
⊙ yr−1 with a 90% confidence level.
The COS Legacy Archive Spectroscopy Survey (CLASSY) Treasury Atlas*
Authors: Berg Danielle A. , James Bethan L. , King Teagan , McDonald Meaghan , Chen Zuyi , Chisholm John , Heckman Timothy , Martin Crystal L. , Stark Dan P. , Aloisi Alessandra , Amorín Ricardo O. , Arellano-Córdova Karla Z. , Bayliss Matthew , Bordoloi Rongmon , Brinchmann Jarle , Charlot Stéphane , Chevallard Jacopo , Clark Ilyse , Erb Dawn K. , Feltre Anna , Gronke Max , Hayes Matthew , Henry Alaina , Hernandez Svea , Jaskot Anne , Jones Tucker , Kewley Lisa J. , Kumari Nimisha , Leitherer Claus , Llerena Mario , Maseda Michael , Mingozzi Matilde , Nanayakkara Themiya , Ouchi Masami , Plat Adele , Pogge Richard W. , Ravindranath Swara , Rigby Jane R. , Sanders Ryan , Scarlata Claudia , Senchyna Peter , Skillman Evan D. , Steidel Charles C. , Strom Allison L. , Sugahara Yuma , Wilkins Stephen M. , Wofford Aida , Xu Xinfeng ,   (The CLASSY Team)
Published: July 2022

Far-ultraviolet (FUV; ∼1200–2000 Å) spectra are fundamental to our understanding of star-forming galaxies, providing a unique window on massive stellar populations, chemical evolution, feedback processes, and reionization. The launch of the James Webb Space Telescope will soon usher in a new era, pushing the UV spectroscopic frontier to higher redshifts than ever before; however, its success hinges on a comprehensive understanding of the massive star populations and gas conditions that power the observed UV spectral features. This requires a level of detail that is only possible with a combination of ample wavelength coverage, signal-to-noise, spectral-resolution, and sample diversity that has not yet been achieved by any FUV spectral database. We present the Cosmic Origins Spectrograph Legacy Spectroscopic Survey (CLASSY) treasury and its first high-level science product, the CLASSY atlas. CLASSY builds on the Hubble Space Telescope (HST) archive to construct the first high-quality (S/N1500 Å ≳ 5/resel), high-resolution (R ∼ 15,000) FUV spectral database of 45 nearby (0.002 < z < 0.182) star-forming galaxies. The CLASSY atlas, available to the public via the CLASSY website, is the result of optimally extracting and coadding 170 archival+new spectra from 312 orbits of HST observations. The CLASSY sample covers a broad range of properties including stellar mass (6.2 < log M
⋆(M
⊙) < 10.1), star formation rate (−2.0 < log SFR (M
⊙ yr−1) < +1.6), direct gas-phase metallicity (7.0 < 12+log(O/H) < 8.8), ionization (0.5 < O32 < 38.0), reddening (0.02 < E(B − V) < 0.67), and nebular density (10 < n

e
(cm−3) < 1120). CLASSY is biased to UV-bright star-forming galaxies, resulting in a sample that is consistent with the z ∼ 0 mass–metallicity relationship, but is offset to higher star formation rates by roughly 2 dex, similar to z ≳ 2 galaxies. This unique set of properties makes the CLASSY atlas the benchmark training set for star-forming galaxies across cosmic time.
The Intermediate-ionization Lines as Virial Broadening Estimators for Population A Quasars*
Authors: Marziani Paola , Olmo Ascensión del , Negrete C. Alenka , Dultzin Deborah , Piconcelli Enrico , Vietri Giustina , Martínez-Aldama Mary Loli , D’Onofrio Mauro , Bon Edi , Bon Natasa , Deconto Machado Alice , Stirpe Giovanna M. , Buendia Rios Tania Mayte
Published: July 2022

The identification of a virial broadening estimator in the quasar UV rest frame suitable for black hole mass computation at high redshift has become an important issue. We compare the H i Balmer H
β line width to the ones of two intermediate-ionization lines: the Al iii
λ1860 doublet and the C iii]
λ1909 line, over a wide interval of redshift and luminosity (0 ≲ z ≲ 3.5;

43
≲
log
L
≲
48.5

[erg s−1]), for 48 sources belonging to the quasar population characterized by intermediate to high values of the Eddington ratio (Population A). The present analysis indicates that the line widths of Al iii
λ1860 and H
β are highly correlated and can be considered equivalent for most Population A quasars over five orders of magnitude in luminosity; for C iii]
λ1909, multiplication by a constant correction factor ξ ≈ 1.25 is sufficient to bring the FWHM of C iii] in agreement with that of H
β. The statistical concordance between low-ionization and intermediate-ionization lines suggests that they predominantly arise from the same virialized part of the broad-line region. However, blueshifts of modest amplitude (few hundred kilometers per second) with respect to the quasar rest frame and an excess (≲1.1) Al iii broadening with respect to H
β are found in a fraction of our sample. Scaling laws to estimate M
BH of high-redshift quasars using the Al iii and C iii] line widths have rms scatter ≈0.3 dex. The Al iii scaling law takes the form

log

M

BH

≈
0.58
log

L

1700,44

+
2
logFWHM
+
0.49

[M
⊙].
Comparison of Spatial Distributions of Intracluster Light and Dark Matter
Authors: Yoo Jaewon , Ko Jongwan , Sabiu Cristiano G. , Shin Jihye , Chun Kyungwon , Seong Hwang Ho , Kim Juhan , James Jee M. , Kim Hyowon , Smith Rory
Published: July 2022

In a galaxy cluster, the relative spatial distributions of dark matter, member galaxies, gas, and intracluster light (ICL) may connote their mutual interactions over the cluster’s evolution. However, it is a challenging problem to provide a quantitative measure for matching the shapes between two multidimensional scalar distributions. We present a novel methodology, named the weighted overlap coefficient (WOC), to quantify the similarity of two-dimensional spatial distributions. We compare the WOC with a standard method known as the modified Hausdorff distance (MHD) method. We find that our method is robust, and performs well even with the existence of multiple substructures. We apply our methodology to search for a visible component whose spatial distribution resembles that of dark matter. If such a component could be found to trace the dark-matter distribution with high fidelity for more relaxed galaxy clusters, then the similarity of the distributions could also be used as a dynamical stage estimator of the cluster. We apply the method to six galaxy clusters at different dynamical stages, simulated within a GRT simulation, which is an N-body simulation using the galaxy replacement technique. Among the various components (stellar particles, galaxies, ICL), the ICL+brightest cluster galaxy (BCG) component most faithfully traced the dark-matter distribution. Among the sample galaxy clusters, the relaxed clusters show stronger similarity in the spatial distribution of the dark matter and ICL+BCG than the dynamically young clusters, while the results of the MHD method show a weaker trend with the dynamical stages.
Magnetic Activity and Physical Parameters of Exoplanet Host Stars Based on LAMOST DR7, TESS, Kepler, and K2 Surveys
Authors: Su Tianhao , Zhang Li-yun , Long Liu , Han Xianming L. , Misra Prabhakar , Meng Gang , Pi Qingfeng , Yang ZiLu , Yang Jiawei
Published: July 2022

Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) low- and medium-resolution spectroscopic surveys are important for determination of the orbital parameters and chromospheric activity of extrasolar planet systems. We crossmatched the exoplanet catalog confirmed before 2021 March 11 with the LAMOST DR7 survey to study their properties. There are 1026 targets with exoplanets observed in the LAMOST DR7 low-resolution spectroscopic survey and 158 targets in the medium-resolution spectroscopic survey. We have calculated the equivalent width of the Hα line and determined their stellar activity. The Hα and flare intensities are almost constant for the Rossby number Ro ≤ 0.12 in the saturated regime and decrease with increasing Ro in the unsaturated regime. In addition, we searched the flare events of all stars with exoplanets in the Transiting Exoplanet Survey Satellite (TESS), Kepler, and K2 surveys. Among the 733 extrasolar planetary systems observed by TESS, we found 481 flares from 57 stars. For Kepler data, we obtained the light curve of 1699 stars and found 1886 flares from 417 stars. For K2 data, we obtained the light curves of 347 stars and found 467 flares from 89 stars. There were light curves of 361 objects with obvious eclipse observed from the TESS survey. We have fitted their light curves with a high signal-to-noise ratio using the JKTEBOP program, and we reobtained the orbital parameters, such as inclination, radius, and period. In the end, we made a judgment on the habitability of exoplanets of stars with flares.
Examining the shifting role of the human in disaster studies
Authors: Cardwell Julia
Published: July 2022

This review essay considers the development of the field of disaster studies and specifically, examines the myriad ways in which the role of the human has shifted during this development. The essay focuses on four major periods of development within disaster studies, including: the hazard-risk paradigm, the bounded rationality paradigm, the concept of social vulnerability and critiques of social vulnerability.
Regeneration of urban space in Romania: A case study of Bistrita municipality
Authors: Tătar Alexandru Marius
Published: July 2022

This study aims to analyze urban landscapes by assessing the development of built space, one of the most dynamic elements within them. The spatial development of built environments is a phenomenon present in most urban areas. The study looks at the relationship between patterns of built space and urban green spaces. Implications on the connectivity of urban space, the planning of urban functions in their proximity, and the spatial distribution of recreational potential based on the perceived recreational value of the landscape by the local community are investigated. The theme of the paper is a topical issue in the study of urban landscapes, while at the same time it is an ongoing phenomenon - the growth of built space - for which optimal planning solutions are being sought. The analysis and results presented seek to increase understanding and awareness in addressing the dynamics of built space in the urban environment. The data used are collected both from official sources and from the ground. Urban regeneration aims to revitalize distressed urban spaces: The development and beautification of public spaces - squares, squares, parks, street furniture. The links between this category of urban space and the rest of the urban infrastructure are analyzed, as well as the role that urban planning plays in the development of built space in the vicinity of forest areas. The study area comprises territories in the municipality of Bistrita. The socio-economic context of the area has been the basis for understanding the patterns of evolution identified in the urban landscape, as well as being a driver in ongoing urban transformations and processes.
Presence of an alien turtle accelerates hatching of common frog (Rana temporaria) tadpoles
Authors: Vodrážková Magda , Šetlíková Irena , Navrátil Josef , Berec Michal
Published: July 2022

The presence of a predator affects prey populations either by direct predation or by modifying various parts of their life history. We investigated whether the hatching time, developmental stage, and body size at hatching of common frog (Rana temporaria) embryos would alter in the presence of a red-eared slider (Trachemys scripta elegans) as a predator. The presence of a predator affected all factors examined. We found that in the absence of the slider, the embryos hatched in 12 days, while hatching was accelerated by two days in slider treatment. At the same time, the embryos hatched smaller and at a lower stage of development with the slider than without it. Our study extends the range of predators studied, including the effect on different phases of development of potential amphibian prey.
Comparative morphology and key to Amydetinae genera, with description of three new firefly species (Coleoptera, Lampyridae)
Authors: Campello Lucas , Vaz Stephanie , Mermudes José R. M. , Ferreira André L. D. , Silveira Luiz F. L.
Published: July 2022

Amydetinae is an exclusively Neotropical subfamily of fireflies, distributed among three genera: Amydetes Illiger, 1807, Magnoculus McDermott, 1964, and Memoan Silveira & Mermudes, 2013. Here, we describe three new species of Amydetinae: two belonging to Amydetes (A. alexisp. nov. and A. marolaesp. nov.) and one to the previously monotypic Memoan (Me. conanisp. nov.). All three species are known only from the Atlantic Forest in southeastern Brazil. Endoskeletal structures of Memoan and Magnoculus species are described and compared with those of Amydetes for the first time. After studying the type material, Photinus fruhstorferi Pic, 1942 is transferred to Memoan, generating Memoan fruhstorfericomb. nov., and Me. ciceroi Silveira & Mermudes, 2013 syn. nov. is placed as a junior synonym. We also redescribe Magnoculus obscurus Olivier, 1885 and compare it to other species of genus and to other amydetine taxa to identify potential new diagnostic traits for the Amydetinae and its constituting genera. We provide an updated diagnosis for Memoan, illustrations for all four species, and a distribution map for the three new species, as well as a key to adult males of the three amydetine genera, and an updated key to Amydetes species based on males.