bluuebunny/crossref_metadata_2025 huggingface dataset:
SOURCES ON THE HISTORY OF CINEMATOGRAPHY IN THE PROVINCIAL PERM AT THE END OF THE 19TH - BEGINNING OF THE 20TH CENTURIES: TOWARD FINDING AND STUDYING
Authors: USTYUGOVA VERA
Published: January 2022

In this paper, we take a case study of Perm at the end of XIX and the beginning of XX century to discuss the introduction and distribution of cinema in the Russian province. We relied on a few groups of sources such as films, both archival and publicly available, ego-documents by filmmakers, the Silver Age artistic intelligentsia and the audience, as well as periodicals, cine magazines and local provincial newspapers. In addition, we considered legal acts and clerical documents. For contextual analysis, we involved photographs, objects of material culture (architecture of cinemas and objects of the Art Nouveau era). We argue that the history of film distribution in the province can only be studied within a wider context of film production in the Russian Empire. Different in their origin, genre, even tactile properties, the sources reveal many aspects of the social history of cinema and cultural reality of the early twentieth century.
«...BECAUSE THEY WILL NOT SIN AGAINST THE OATH TO SERVE WITH FAITH AND TRUTH»: THE POLICE GUARD OF THE VYATKA PROVINCE THROUGH THE EYES OF BARON G. P. VON MEDEM (1906, 1909)
Authors: RYAZANOV SERGEY
Published: January 2022

The publication contains the documents previously not introduced into scientific circulation, revealing both the view on the police guard of the Vyatka province of its auditor, the Russian statesman, Lieutenant General Baron G. P. von Medem, and the changes in police guard organization that occurred over the three years of the institute. In the first document, the gendarme describes the police guard of the Vyatka provinces, as the auditor of which he acted during the First Russian Revolution. The second document presents the results of the revision of the Vyatka guard in October-December 1909. The introductory article highlights the historical, source study and archaeographic issues associated with the published documents. The sources are published in accordance with the current «Rules for the Publication of Historical Documents» (1990).
Effects of antifouling technology application on Marine ecological environment
Authors: Liu Liang-Cheng , WANG Ge , SONG Jun-Yi , HU Bi-Ru
Published: January 2022

Resolving the contradiction between Marine economic development and Marine ecological environment protection has become an unavoidable and sharp problem. The uncontrolled use of Marine antifouling technology will bring uncontrollable and even irreversible damage to the Marine biosphere, which will lead to ecological disaster and threaten the survival of human beings. Therefore, it is an urgent task to find antifouling technology with lower environmental toxicity under the premise of considering economy. More attention should be paid to the long-term impact of mature and new technologies on the Marine ecological environment. This paper introduces the development status of antifouling technology, its influence on Marine ecological environment and puts forward the design strategy of comprehensive biological fouling prevention and control technology.
Persepsi Pengelola Program PNFI Terhadap Tugas Pokok Penilik PNFI di Kabupaten Cirebon
Authors: Hamdan Ahmad , Heryanto Nunu , Ardiwinata Jajat S.
Published: January 2022

Permasalahan yang terjadi di Kabupaten Cirebon wilayah timur yaitu penilik yang belum secara maksimal menjalankan tugas pokoknya sesuai Permenpan No 14 Tahun 2010. Tujuan penelitian ini adalah untuk mendeskripsikan peran penilik dalam menjalankan tugas pokok dan mendeskripsikan manfaat yang dirasakan oleh para pengelola program PNFI terhadap keberadaan penilik. Metode penelitian yang digunakan dalam penelitian ini yaitu deskiptif kualitatitf. Teknik pengumpulan data yang digunakan yaitu wawancara, observasi dan studi kepustakaan. Populasi dalam penelitian ini yaitu para penilik dan pengelola program PNFI di Kabupaten Cirebon wilayah Timur. Hasil yang didapat dari penelitian ini yaitu penilik sebagai pengendali program dan evaluasi dampak program PNFI sudah berjalan sebagaimana mestinya, meskipun masih ada beberapa penilik yang melaksanakan tugasnya tidak maksimal dan pembagian tugas penilik belum berjalan sesuai dengan peraturan yang ada. Para pengelola program sangat merasakan keberadaan penilik dalam meningkatkan mutu program PNFI.
Peran Pendidik Dalam Mengembangkan Kreativitas Seni Anak Usia Dini Di Kelompok Bermain Koronka Bawen Kabupaten Semarang
Authors: Trisnawati Wahyu , Raharjo Tri Joko , Kisworo Bagus
Published: January 2022

Developing creativity in the classroom is a major factor that matters. Educators who understand creativity can help learners in developing creativity. Educators who train and teach creativity must be educators who have a creative soul. The outline of the issue examined was how the role of educators in developing early childhood art creativity in Group Play Koronka, how to factor endowments development early childhood art creativity in Group Play Koronka, as well as how the factors restricting the development of creativity in early childhood Arts Groups Play Koronka. data collection is carried out by means of observation, interview and documentation. The validity of the data obtained through triangulation of sources and methods. Data analysis starts from data collection through the reduction of the data, the presentation of data, and the withdrawal of the conclusion. The results obtained in this research is the role of educators include educating, teaching, guiding, directing, train, assess, and evaluate his protégé participant about the creativity of art. Educators who creatively very influential towards the participants of his protégé. In addition, the factors that support the creativity of art comes from the support of parents as well as adequate infrastructure and facilities. While the factors that inhibit the creativity of art located on educators or parents who break the idea put forth child, competition between the child, the limitation on the child's curiosity, many educators forbid children, as well as parenting parents too keep an eye on the child.
Prevalence of SARS-CoV-2 infection during the first wave of the pandemic among health and non-health personnel of the General Hospital of Segovia, Castilla y León
Authors: Avellaneda Martínez Carlos , Santos Pastor Julio César , Marcos Sánchez Isabel María , Narros Giménez Ainhoa , Gutiérrez de Antón María , Alonso Chacón Pablo
Published: January 2022

Introduction. Health and non-health workers (H&NH-W) in a hospital are more exposed to SARS-CoV-2 infection than the general population. We studied the prevalence of this infection in these workers of Segovia´s Hospital after the first epidemic wave. Material and methods. Monocentric, observational, cross-sectional study, carried out between April 29 and May 14, 2020. The infection was diagnosed by capillary immunochromatography test for IgG and / or IgM antibodies, or PCR. Work, health, and exposure variables were studied. Results. A total of 1,335 H&NH-W participated in the study out of a total of 1,667 (80.1%), 79.3% women, with a mean age of 47.3 years, and 47.1 for men. The prevalence of infected was 21.95%, 24.7% asymptomatic. Age presented a significant OR of 1.02/year. Exposure outside of work increased the prevalence by 16.8%. The continued use of Personal Protective Equipment (PPE) and the administration of nebulizations presented an OR of 0.54 and 0.46 respectively. The symptoms associated with the highest prevalence were anosmia (OR 9.31), ageusia (OR 3.05), and fever (OR 1.94). Today, about 75% of H&NH-W were infected in the first wave. Conclusions. The prevalence is higher among healthcare workers than the population they serve. Age is associated with a higher prevalence of infection. Almost a quarter of those infected were asymptomatic. The continuous use of PPE was associated with a lower prevalence, for that the administration of nebulisations could be safe. The symptoms with the greatest association were fever, anosmia, and ageusia.
ANALISIS DAMPAK PELAKSANAAN PROGRAM MBKM TERHADAP TENAGA PENDIDIK DI PRODI PGSD FKIP UNIVERSITAS BUNG HATTA DALAM MENGHASILKAN LULUSAN YANG TANGGUH BERSAING DI ERA GLOBAL
Authors: Amrina Zulfa , Yuza Arlina , Sari Syafni Gustina
Published: January 2022

This article aims to describe the analysis of the impact of the implementation of the MBKM program on Educators at the Bung Hatta University PGSD FKIP Study Program in producing graduates who are tough to compete in the global era. The type of research used is quantitative with a descriptive approach. Data collection techniques using a questionnaire. Data analysis used descriptive statistical techniques, namely data collection, data reduction, data presentation and conclusion drawing. The validity of the data is done by increasing the persistence and triangulation techniques. The results show that 1) Educators (Tendik) know that most of the policy content comes from the Ministry of Education and Culture's online channels (websites/websites, social media) and others from offline/online socialization activities organized by universities. 2) Tendik did not understand the contents of the policy on MBKM because he answered incorrectly the number of credits and semesters of MBKM implementation. 3) Implementation of the MBKM program on improving hard-skills and soft-skills for students is considered by Tendik to be lacking. 4) Tendik is satisfied with the MBKM program, but there are still many obstacles, such as funding, human resource capabilities and regulations.
Nonlinear Control of the Permanent Magnet Synchronous Motor PMSM using Backstepping Method
Authors: Chaou Youssef , Ziani Said , Achour Hafid Ben , Daoudia Abdelkarim
Published: January 2022

This paper presents a nonlinear control of (PMSM) using backstepping. We will study the different performances and robustness of each type of control, by introducing a new Lyapunov function candidate with a large possibility of parameter choice. Simulation results clearly show that the speed and current tracking errors asymptotically converge to zeros. Compared with neural networks control schemes, we do not require the unknown parameters to be linear parametrizable. No regression matrices are needed, so no preliminary dynamical analysis is needed.
The Impact of Organizational Creativity on Sustainable Development in the Kuwaiti Industrial Sector
Authors: Alsabah Faisal Khaleefah Jasem , Alshura Mohammed Saleem
Published: January 2022

This study explored the impact of organizational creativity on sustainable development in the Kuwaiti industrial sector. The researchers adopted a descriptive-analytical approach to explore the impact of organizational creativity on sustainable development in the Kuwaiti industrial sector. The researchers designed a questionnaire to pass it to the members of the population in the Kuwaiti Industrial Sector. The population consists of all the administrators who work in the Kuwaiti Industrial sector. It was found that organizational creativity dimensions (acknowledgment, utilization, and reengineering) impact sustainable development dimensions (the economic, social, and environmental dimensions) in the Kuwaiti industrial sector. Also, it was found that there is a high level of agreement on applying Organizational Creativity and Sustainable Development in the Kuwaiti Industrial Sector. The researchers recommended examining the technological methods used in the industrial sector, managing the costs efficiently by companies, and providing the required financial and human resources for reengineering various resources.
PENGARUH WORK ENVIRONMENT LEADERSHIP STYLE DAN ORGANIZATION CULTURE WORK DISCIPLINE TERHADAP JOB SATISFACTION DAN PERFORMANCE
Authors: Rosmalinda Rosmalinda , Sarkum Sumitro , Simanjuntak Daslan
Published: January 2022

Penelitian ini bertujuan untuk mngetahui apakah work environtment, leadership style, organization culture, work disipline berpengaruh terhadap job satisfaction dan performance di Dinas pendidikan labuhanbatu. Penelitian ini menggunakan metode kuantitatif dengan 96  kuisioner yang valid. Metode analisis statistik yang digunakan adalah SPSS. hasil penelitian ini menyimpulkan bahwa work environment berpengaruh negatif namun signifikan terhadap job satisfaction dan berpengaruh positif signifikan terhadap performance, adanya pengaruh leadership style, organization culture dan work disipline terhadap performance, dan adanya pengaruh positif signifikan job satifaction terhadap performance
ANALISIS KANONIK KARAKTERISTIK KONSUMEN KUALITAS PELAYANAN DAN KEPUASAN KONSUMEN PEMBELIAN KEMBALI PADA MARKET PLACE TOKOPEDIA
Authors: Harkim Harkim , Holy S. Christ , Simanungkalit Audina , Tambunan Denny Martin , Sofiyan Sofiyan
Published: January 2022

Perubahan besar yang disebabkan pesatnya perkembangan teknologi informasi dan telekomnukasi telah merubah prilaku dan gaya hidup masyarakat luas dalam segala sendi-sendi kehidupan mereka. Internet menjelma menjadi media baru bagi pemasaran produk dan jasa, dan tempat transaksi jual beli secara digital dalam wadah yang bersifat virtual (maya). Sehingga jika dahulu konsumen harus mengunjungi pusat-pusat perbelanjaan atau toko secara langsung untuk membeli sebuah produk atau jasa. Tujuan dalam penelitian ini adalah melakukan analisis korelasi kanonik hubungan karakteristik konsumen dan kualitas pelayanan pada market place Tokopedia dengan kepuasan pelanggan dan keputusan pembelian kembali yang dilakukan pelanggan pada market place tokopedi. Teknik analisis data dengan menggunakan analisis korelasi kanonik untuk menggambarkan hubungan antara variabel independen dengan variabel dependen secara bersamaan. Analisis korelasi kanonik merupakan teknik statistika multivariat yang dikembangkan oleh Hoteling (1936), metode ini dikembangkan untuk mengidentifikasi dan mengukur tingkat keratan hubungan linier antara dua himpunan variabel, himpunan variabel dependen dan himpunan variabel independen yang diukur pada unit sampling yang sama. Variabel independen yang mempunyai hubungan paling kuat yakni yang memiliki dengan nilai muatan kanonik terbesar dengan kepuasan konsumen dan keputusan pembelian kembali adalah variabel kualitas pelayanan. Sedangkan Variabel yang memiliki kontribusi terbesar dalam kelompok variabel dependen adalah variabel kepuaasan pelanggan dengan bobot kanonik terbesar. Sedangkan  Variabel yang memiliki kontribusi paling besar dalam kelompok variabel independen adalah variabel kualitas pelayanan dengan bobot kanonik terbesar.
The asymmetric Henry reaction as synthetic tool for production of drugs Linezolid and Rivaroxaban
Authors: Vrbický Martin , Macek Karel , Pochobradský Jaroslav , Svoboda Jan , Sedlák Miloš , Drabina Pavel
Published: January 2022

The human drugs – antibiotic Linezolid (1) and anticoagulant Rivaroxaban (2) – belongs among modern pharmaceutics, which contain oxazolidine-2-one moiety bearing stereogenic centre. The chirality of these drugs is fundamental attribute of their biological activity. Herein, one of the efficient asymmetric syntheses of those drugs was studied in detail. High enantioselective catalysts were tested in the key step of the synthetic procedure, i.e. asymmetric Henry reaction, under different reaction conditions, using several starting aldehydes. The corresponding nitroaldols as chiral intermediates of those drugs were obtained in high yields and enantiomeric excess up to 91% ee.
Need Analysis on English for Computer and Technique
Authors: Rifiyanti Hafizah , Dewi Dyah Utami
Published: January 2022

Practice is as important as the theory in learning a language. A recommended syllabus is needed to use in the institution according to the need of the learners as well. This esearch aims to analyze the necessities, the lacks and wants of the learners in the English for Computer and Technique course. The research method is descriptive with a qualitative model. The survey research using a series of questionnaires and was distributed to 32 respondents from the informatics study program. In collecting the data, the researcher applied questionnaire for the students as the instrument of the research. The results of the needs analysis concluded that students need English to improve their speaking, listening, reading, and writing. material that per the field of science, namely computer science, becomes more interesting and strongly supports the knowledge being studied. The implementation of this research is to prepare an Semester Learning Plan in accordance to the student’s needs and to develop lecturer competence as well as technology and information progress.
Jurisprudential Choices By Omar Bin Omar Al-Zuhri Al-Hanafi (Died: 1079 A.H.) (Washing provisions) From His Book "Al- Jawahir Al- Nafisa in the Explanation of Al- Dura Al- Munifa"
Authors: Al-meshhedani Maqdad
Published: January 2022

In the name of Allah Most Gracious Most Merciful، The prophet (peace and blessings of Allah be upon him). After yet The purity is one of the most important things that urged by the principles of slam and our true religion. It is also one of the pillars of Islam. This research، the jurisprudential choices of Omar bin Omar" Al-Zahra Al-Haifa in his book "Al-Jawahir Al Naïfs fi Sharh Ad- Durra Al-Munifa "، where the first topic dealt with the life of the author، may Allah have mercy on him and Book-to-author attribution and the reason of composing. The second topic is about matters concerning to "washing provisions". My method in this study is an inductive method. I mentioned each issue within a study plan and explained the sayings of the jurists in it and their evidence from the Qur’an and the pure Sunnah، and expressed the most correct opinion from the sayings of the jurists. Praise be to Allah، firstly and finally and ask him to benefit us what we have written.
Provisions Of Friday، Eid And Funerals Prayers For Expatriates
Authors: Badawi Dahir
Published: January 2022

Allah Almighty has made the law of Islam valid for every time and place and seeks to ensure the best life for human beings. Human life with naturally accept developing and change، so the provisions of the Sharia with their flexibility to keep up with this change. Muslim is commanded to perform the rituals of Allah Almighty. He may move from one place to another and from a Muslim country to a non-Muslim country، so he desires to practice the rituals of his religion that Allah has distinguished him with. For the reason that the expatriate Muslim does not differ in its rulings from the non-immigrant Muslim who resides in his country in that it is obligatory to display the rituals of religion outwardly so long as it is not hidden from himself، his money، his honor and his religion.
Al-Arbaeun Fi Latayif Alnabii - May Allah Bless Him - Wa-Muzahih"
(The Forty in the kindness and joking of the Prophet ) By
Issam Al-Din Abi Al-Khair Ahmad Ibn Mustafa، known as "Tash Kubri Zadeh" (D.968 AH)
Study and Verification
Authors: Hussein Abdulqader
Published: January 2022

This is a book "Al'Arbaeun Fi Latayif Alnabii - May Allah Bless Him And Grant Him Peace- Wa-Muzahih"، (The Forty in the kindness and joking of the Prophet ) by Issam Al-Din Abi Al-Khair Ahmad Ibn Mustafa، known as "Tash Kubri Zadeh" (D.968 AH). It's subject is about: Hadiths and quotations narrated from the Prophet - may Allah bless him and grant him peace - in joking and kindness with his family and his companions - may Allah be pleased with them all. It reveals to us an important aspect of his character and his virtues and presents to us images of his companionship، mercy and great morals which prompted me to choose this book to be verified، in addition to my eagerness to supplement the library of the Prophet’s Sunnah with this nice and important book with its topic. The book has a special importance among the books of "Al'Arbaenat" (Forties) that scholars have looked after in the past and present، because it is a collection of hadiths that relate to prophetic ethics - which is joking - because you can only find those who collected them in one place - according to what I have read - in this book. The author had his own method of authoring and attributing for references، explaining strange terms، the method of narrating and summarizing hadiths، and mentioning the benefits. There are also some methodological scholarly shortcomings on the author that I mentioned in the study section.
The Differences Between Joseph And Moses Stories - peace be upon them-
Comparative Objective Study
Authors: Abd Ahmed
Published: January 2022

The summary of the research on the differences between the two stories of Joseph and Moses، peace be upon them، centers on the fact that there are different faces between the two stories. His birth and upbringing in Egypt، as he grew up in an urban environment، and one of the differences in the boyhood stage is their loss and separation from their parents and then meeting them. Motives for disposal differ between the two stories; The motive of Joseph’s brothers to get rid of him was motivated by envy and jealousy. As for the motive of Pharaoh and his soldiers to get rid of Moses  and kill him، it was the fear of the boy of the Children of Israel and the face of throwing Josephinto the well was on the part of his brothers، envy and maliciousness، and hatred for him. As for the aspect of throwing Moses  into the sea، it was from his mother that he loved، tenderness، care and compassion for him، just as the fear and sadness of Jacob over the loss of his son differs from the fear and sadness of a mother Moses for the loss of her son، and the facts and reasons for the father’s meeting with his son are different from the mother’s meeting with her son. One of the differences between their two stories in the stage of puberty within the palace is the difference in the meaning of wisdom and knowledge in the two stories، and the treatment of the king's woman with Joseph is different from that of Pharaoh’s wife with Moses. One of the differences is that the reason for their leaving the palace in which they grew up differs also. One of the differences between the two stories is that Yusuf was the one who brought the Children of Israel to Egypt، while Moses was the one who expelled them.
The Portrait Of Good Governance Implementation Onto Padang City Government In The Development Of Sustainable Tourism
Authors: SISKAWATI Eka , ZAHARA Zahara , GUSTA Haniva Dela
Published: January 2022

This article describes on how the implementation of good governance is carried out by Padang City Government in sustainable tourism management. This research is aimed to (1) Overseeing the good governance implementation in Padang City Government in term of the development of sustainable tourism destinations. (2) Analyzing the sustainable tourism management viewing it from agency theory by using three approaches of agency relationship; the relationship between executive and legislative; the relationship between legislative and public; and the relationship in budgeting context. It is a qualitative descriptive research, and performed in Padang City Culture and Tourism Office. More over, data collection utilizes observation, interview, and documentation. The good governance principle employed in this research are accountability, participation, and transparency. The result shows that the implementation of good governance at Padang City Culture and Tourism Office has been achieved well. It is as a result of the agency relationships occured within local government; the relationship with the executive in the role of Culture and Tourism Office, with the legislative in the role of Padang City Mayor, and with public as the community.
Physico-Chemical and Microbiological Studies on Jordanian Honey and Propolis as Potential Self-Preserving Pharmaceutical Systems
Authors: SI Al-Adham Ibrahim , Al-Muhtaseb Najah , Al-Kaissi Elham , Qussini Seba , Collier Phillip J
Published: January 2022

The aim of this project was to study the physico-chemical and antimicrobial properties of Jordanian honey and propolis in order to determine their potential as pharmaceutical preservation systems. This study undertook a physico-chemical analysis of several Jordanian honeys and one propolis type, in order to evaluate several physico-chemical properties including, pH and free acidity, moisture content, ash content and HydroxyMethylFurfural content in three honey samples, and total flavonoid content in the propolis sample. The antimicrobial activity of honey and propolis samples was then evaluated by determining the minimum inhibitory concentration (MIC) against Staphylococcus aureus ATCC 6538, Escherichia coli ATCC 8739, Pseudomonas aeruginosa ATCC 9027 and Candida albicans ATCC 10231. Subsequently, Honey 1 (H1) was selected for further study and combined with propolis to test their potential synergistic activity. Finally, a preservative effectiveness test was conducted in order to assess the possibility of using honey and propolis as natural preservatives in aqueous dosage forms, such as syrups. The results of this study showed that all the tested honey samples and propolis possessed significant antimicrobial activity against the standard test microorganisms, and that honey with propolis exhibited synergistic activity that enhanced their antimicrobial activity and resulted in up to 90% reduction in their MIC values. This study also confirmed that honey and propolis could be used as a natural preservative system for pharmaceutical formulae. Our results reveal the possibility of using honey-propolis mixtures as natural preservatives in oral aqueous pharmaceutical dosage forms and other local application products.
Variability and Spectral Characteristics of Three Flaring Gamma-Ray Quasars Observed by VERITAS and Fermi-LAT
Authors: Adams C. B. , Batshoun J. , Benbow W. , Brill A. , Buckley J. H. , Capasso M. , Cavins B. , Christiansen J. L. , Coppi P. , Errando M. , Farrell K. A , Feng Q. , Finley J. P. , Foote G. M. , Fortson L. , Furniss A. , Gent A. , Giuri C. , Hanna D. , Hassan T. , Hervet O. , Holder J. , Houck M. , Humensky T. B. , Jin W. , Kaaret P. , Kertzman M. , Kieda D. , Krennrich F. , Kumar S. , Lundy M. , Maier G. , McGrath C. E , Moriarty P. , Mukherjee R. , Nieto D. , Nievas-Rosillo M. , O’Brien S. , Ong R. A. , Oppenheimer A. , Otte A. N. , Patel S. , Pfrang K. , Pohl M. , Prado R. R. , Pueschel E. , Quinn J. , Ragan K. , Reynolds P. T. , Rhatigan A. , Ribeiro D. , Roache E. , Ryan J. L. , Santander M. , Sembroski G. H. , Williams D. A. , Williamson T. J ,   (VERITAS Collaboration), Valverde J. , Horan D. , Buson S. , Cheung C. C. , Ciprini S. , Gasparrini D. , Ojha R. , van Zyl P. ,   (Fermi-LAT Collaboration), Sironi L.
Published: January 2022

Flat-spectrum radio quasars (FSRQs) are the most luminous blazars at GeV energies but only rarely emit detectable fluxes of TeV gamma rays, typically during bright GeV flares. We explore the gamma-ray variability and spectral characteristics of three FSRQs that have been observed at GeV and TeV energies by Fermi-LAT and VERITAS, making use of almost 100 hr of VERITAS observations spread over 10 yr: 3C 279, PKS 1222+216, and Ton 599. We explain the GeV flux distributions of the sources in terms of a model derived from a stochastic differential equation describing fluctuations in the magnetic field in the accretion disk and estimate the timescales of magnetic flux accumulation and stochastic instabilities in their accretion disks. We identify distinct flares using a procedure based on Bayesian blocks and analyze their daily and subdaily variability and gamma-ray energy spectra. Using observations from VERITAS, as well as Fermi, Swift, and the Steward Observatory, we model the broadband spectral energy distributions of PKS 1222+216 and Ton 599 during very high energy (VHE)–detected flares in 2014 and 2017, respectively, strongly constraining the jet Doppler factors and gamma-ray emission region locations during these events. Finally, we place theoretical constraints on the potential production of PeV-scale neutrinos during these VHE flares.
Interstellar Planetesimals: Potential Seeds for Planet Formation?
Authors: Moro-Martín Amaya , Norman Colin
Published: January 2022

We investigate the trapping of interstellar objects during the early stages of star and planet formation. Our results show a very wide range of possible values that will be narrowed down as the population of interstellar objects becomes better characterized. When assuming a background number density of 2 · 1015 pc−3 (based on 1I’s detection), a velocity dispersion of 30 km s−1, and an equilibrium size distribution, the number of interstellar objects captured by a molecular cloud and expected to be incorporated to each protoplanetary disk during its formation is O(109) (50 cm–5 m), O(105) (5–50 m), O(102) (50–500 m), O(10−2) (500 m–5 km). After the disk has formed, the number of interstellar objects it can capture from the ISM during its lifetime is 6 · 1011 (50 cm–5 m), 2 · 108 (5–50 m), 6 · 104 (50–500 m), 20 (500 m–5 km); in an open cluster where 1% of stars have undergone planet formation, these values increase by a factor of O(102–103). These trapped interstellar objects might be large enough to rapidly grow into larger planetesimals via the direct accretion of the subcm-sized dust grains in the protoplanetary disk before they drift in due to gas drag, helping overcome the meter-size barrier, acting as “seeds” for planet formation. They should be considered in future star and planet formation models, as well as in the potential spread of biological material across the Galaxy.
A Study of Sunspot 3 Minute Oscillations Using ALMA and GST
Authors: Chai Yi , Gary Dale E. , Reardon Kevin P. , Yurchyshyn Vasyl
Published: January 2022

Waves and oscillations are important solar phenomena, not only because they can propagate and dissipate energy in the chromosphere, but also because they carry information about the structure of the atmosphere in which they propagate. The nature of the 3 minute oscillations observed in the umbral region of sunspots is considered to be an effect of propagation of magnetohydrodynamic waves upward from below the photosphere. We present a study of sunspot oscillations and wave propagation in NOAA Active Region 12470 using an approximately 1 hr long data set acquired on 2015 December 17 by the Atacama Large Millimeter/submillimeter Array (ALMA), the Goode Solar Telescope (GST) operating at the Big Bear Solar Observatory, the Atmospheric Imaging Assembly on board the Solar Dynamics Observatory, and the Interface Region Imaging Spectrograph. The ALMA data are unique in providing a time series of direct temperature measurements in the sunspot chromosphere. The 2 s cadence of ALMA images allows us to well resolve the 3 minute periods typical of sunspot oscillations in the chromosphere. Fourier analysis is applied to ALMA Band 3 (∼100 GHz, ∼3 mm) and GST Hα data sets to obtain power spectra as well as oscillation phase information. We analyzed properties of the wave propagation by combining multiple wavelengths that probe physical parameters of solar atmosphere at different heights. We find that the ALMA temperature fluctuations are consistent with that expected for a propagating acoustic wave, with a slight asymmetry indicating nonlinear steepening.
An Efficient Signal-to-noise Approximation for Eccentric Inspiraling Binaries
Authors: Randall Lisa , Shelest Alexandra , Xianyu Zhong-Zhi
Published: January 2022

Eccentricity has emerged as a potentially useful tool for helping to identify the origin of black hole mergers. However, eccentric templates can be computationally very expensive owing to the large number of harmonics, making statistical analyses to distinguish formation channels very challenging. We outline a method for estimating the signal-to-noise ratio (S/N) for inspiraling binaries at lower frequencies such as those proposed for LISA and DECIGO. Our approximation can be useful more generally for any quasi-periodic sources. We argue that surprisingly, the S/N evaluated at or near the peak frequency (of the power) is well approximated by using a constant-noise curve, even if in reality the noise strain has power-law dependence. We furthermore improve this initial estimate over our previous calculation to allow for frequency dependence in the noise to expand the range of eccentricity and frequency over which our approximation applies. We show how to apply this method to get an answer accurate to within a factor of 2 over almost the entire projected observable frequency range. We emphasize this method is not a replacement for detailed signal processing. The utility lies chiefly in identifying theoretically useful discriminators among different populations and providing fairly accurate estimates for how well they should work. This approximation can furthermore be useful for narrowing down parameter ranges in a computationally economical way when events are observed. We furthermore show a distinctive way to identify events with extremely high eccentricity where the signal is enhanced relative to naive expectations on the high-frequency end.
The Solar Eruption of 2017 September 10: Wavy with a Chance of Protons
Authors: de Koning Curt A. , Pizzo V. J. , Seaton Daniel B.
Published: January 2022

High-resolution SUVI images reveal an interesting new picture of particle acceleration in powerful solar eruptions. Typically, powerful solar eruptions include a coronal wave component, as well the traditional CME and flare components. At low solar altitudes, coronal waves refract downward, toward the solar surface, because of the slower Alfvén speeds at the base of the corona. The refracted wave plus the shock wave ahead of an intense CME allow for a two-step shock acceleration process that can result in relativistic or GLE particles. This mechanism may be particularly applicable to the first-to-arrive, prompt relativistic particles measured by the Fort Smith neutron monitor during GLE # 72 on 2017 September 10.
Impact of the SpaceX Starlink Satellites on the Zwicky Transient Facility Survey Observations
Authors: Mróz Przemek , Otarola Angel , Prince Thomas A. , Dekany Richard , Duev Dmitry A. , Graham Matthew J. , Groom Steven L. , Masci Frank J. , Medford Michael S.
Published: January 2022

There is a growing concern about an impact of low-Earth-orbit (LEO) satellite constellations on ground-based astronomical observations, in particular, on wide-field surveys in the optical and infrared. The Zwicky Transient Facility (ZTF), thanks to the large field of view of its camera, provides an ideal setup to study the effects of LEO megaconstellations—such as SpaceX’s Starlink—on astronomical surveys. Here, we analyze the archival ZTF observations collected between 2019 November and 2021 September and find 5301 satellite streaks that can be attributed to Starlink satellites. We find that the number of affected images is increasing with time as SpaceX deploys more satellites. Twilight observations are particularly affected—a fraction of streaked images taken during twilight has increased from less than 0.5% in late 2019 to 18% in 2021 August. We estimate that once the size of the Starlink constellation reaches 10,000, essentially all ZTF images taken during twilight may be affected. However, despite the increase in satellite streaks observed during the analyzed period, the current science operations of ZTF are not yet strongly affected. We also find that redesigning Starlink satellites (by installing visors intended to block sunlight from reaching the satellite antennas to prevent reflection) reduces their brightness by a factor of 4.6 ± 0.1 with respect to the original design in g, r, and i bands.
Oreocharis repenticaulis (Gesneriaceae), a new species from western Guangxi, China
Authors: Huang XueKui , Su Chun-Lan , Yang Ping , Liu Yan
Published: January 2022

Oreocharis repenticaulis, a new species of Gesneriaceae from Guangxi, China, is described and illustrated. The new species is most similar to O.argyreia Chun ex K.Y. Pan, but it differs from the latter by its leaf shape, umbrella inflorescence, corolla color, filament, phenology and some obvious characteristics of rhizomes. Detailed morphological description, illustrations and morphological comparison with similar species are provided.
Ce que les métropoles doivent au capitalisme, et réciproquement
Authors: Halbert Ludovic
Published: January 2022

Les métropoles entretiennent un lien étroit avec les différents modes d’accumulation des richesses. L’article explore comment elles sont le site d’un capitalisme mondialisé, financiarisé et urbanisé depuis les années 1970.
Le réseau plus que la concentration géographique
Authors: Grossetti Michel
Published: January 2022

La concentration géographique, telle que la mesure la taille des agglomérations, ne produit pas mécaniquement un surcroît de performance économique. Celle-ci dépend de la structure des réseaux de relations entre les personnes, des ressources de coordination impersonnelles et des liens entre les organisations. En revanche, les systèmes économiques locaux, qui ne dépendent pas de la taille des agglomérations ou des régions dans lesquels ils se forment, procurent en général des avantages aux entreprises qui en font partie. Même en l’absence de tels systèmes, l’inscription dans des réseaux non locaux peut permettre d’effectuer des activités économiquement viables.
Concentration of bound states for fractional Schrödinger-Poisson system via penalization methods
Authors: Teng Kaimin , Wu Xian
Published: January 2022

In this paper, we study the following fractional Schrödinger-Poiss-on system

   \begin{document}$ \begin{equation*} \begin{cases} \varepsilon^{2s}(-\Delta)^su+V(x)u+\phi u = g(u) & \hbox{in $\mathbb{R}^3$,} \\ \varepsilon^{2t}(-\Delta)^t\phi = u^2,\,\, u>0& \hbox{in $\mathbb{R}^3$,} \end{cases} \end{equation*} $\end{document}

where \begin{document}$ s,t\in(0,1) $\end{document}, \begin{document}$ \varepsilon>0 $\end{document} is a small parameter. Under some local assumptions on \begin{document}$ V(x) $\end{document} and suitable assumptions on the nonlinearity \begin{document}$ g $\end{document}, we construct a family of positive solutions \begin{document}$ u_{\varepsilon}\in H_{\varepsilon} $\end{document} which concentrate around the global minima of \begin{document}$ V(x) $\end{document} as \begin{document}$ \varepsilon\rightarrow0 $\end{document}.
A novel separate chance-constrained programming model to design a sustainable medical ventilator supply chain network during the Covid-19 pandemic
Authors: Abad Amin Reza Kalantari Khalil , Barzinpour Farnaz , Pasandideh Seyed Hamid Reza
Published: January 2022

Providing new models or designing sustainable networks in recent studies represents a growing trend. However, there is still a gap in the simultaneous modeling of the three dimensions of sustainability in the electronic medical device supply chain (SC). In this paper, a novel hybrid chance-constrained programming and cost function model is presented for a green and sustainable closed-loop medical ventilator SC network design. To bring the problem closer to reality, a wide range of parameters including all cost parameters, demands, the upper bound of the released \begin{document}$ co_2 $\end{document}, and the minimum percentage of the units of product to be disposed and collected from a customer and to be dismantled and shipped from DCs are modeled as uncertain along with the normal probability distribution. The problem was first formulated into the framework of a bi-objective stochastic mixed-integer linear programming (MILP) model; then, it was reformulated into a tri-objective deterministic mixed-integer nonlinear programming (MINLP) one. In order to model the environmental sustainability dimension, in addition to handling the total greenhouse gas emissions, the total waste products were also controlled. The efficiency and applicability of the proposed model were tested in an Iranian medical ventilator production and distribution network. For sensitivity analyses, the effect of some critical parameters on the values of the objective functions was carefully examined. Finally, valuable managerial insights into the challenges of companies during the COVID-19 pandemic were presented. Numerical results showed that with the increase in the number of customers in the COVID-19 crisis, social responsibility could improve cost mean by up to 8%.
Robust Markowitz: Comprehensively maximizing Sharpe ratio by parametric-quadratic programming
Authors: Qi Yue , Liu Tongyang , Zhang Su , Zhang Yu
Published: January 2022

Markowitz formulates portfolio selection and calls the optimal solutions as an efficient frontier. Sharpe initiates Sharpe ratio for frontier portfolios' reward to variability. Finance textbooks assume that there exists a line which passes through a risk-free rate and is tangent to an efficient frontier. The tangent portfolio enjoys the maximum Sharpe ratio.

However, the assumption is over-simplistic because we prove that other situations exist. For example, Sharpe ratio itself may not be even well-defined. We comprehensively maximize Sharpe ratio. In such an area, this paper contributes to the literature. Specifically, we identify the other situations by parametric-quadratic programming which renders complete efficient frontiers by piecewise-hyperbola structure. Researchers traditionally view efficient frontiers by just isolated points. We accomplish handy formulae, so investors can even manually process them.

The COVID-19 pandemic is unleashing crises. Unfortunately, there is quite limited research of portfolio selection for COVID. In such an area, this paper contributes to the practice. Specifically, we originate a counter-COVID measure for stocks and integrate it as a constraint into portfolio-selection models. The maximum-Sharpe-ratio portfolio outperforms stock-market indexes in sample. We launch the models for Dow Jones Industrial Average and discover outperformance out of sample.
The theoretical modeling of the dynamic compaction process of forest soil
Authors: Grigorev Igor ,   Department of Technology and Equipment of Forest Complex, Arctic State Agrotechnological University, Yakutsk, Russian Federation, Burgonutdinov Albert , Makuev Valentin , Tikhonov Evgeniy , Shvetsova Viktoria , Timokhova Oksana , Revyako Sergey , Dmitrieva Natalia ,   Department of Operation of Auto Armored Technique of the Faculty (Technical Support), Perm Military Institute of the National Guard's Forces of the Russian Federation, Perm, Russian Federation,   Department of Technological and Equipment LT 7, Moscow State Technical University N. E. Bauman (Mytishchi branch), Mytishchi, Russian Federation,   Department of Transport and Technological Machinery and Equipment, Petrozavodsk State University, Petrozavodsk, Russian Federation,   Department of Descriptive Geometry and Engineering Graphics, Saint-Petersburg State University Architecture and Civil Engineering, Saint-Petersburg, Russian Federation,   Department of Engineering Technological Machines and Equipment, Ukhta State Technical University, Ukhta, Russian Federation,   Department of Environmental Engineering Machines, Novocherkassk Engineering and Reclamation Institute, Don State Agrarian University, Novocherkassk, Russian Federation,   Department of Foreign Languages for Technical and Natural Sciences, Petrozavodsk State University, Petrozavodsk, Russian Federation
Published: January 2022

Due to the growing demand for timber, forest soils are increasingly exposed to mechanical disturbances, caused by forestry equipment. Even though using skidding machines to transport wood is detrimental to the physical state of the soil, this method remains the most common. Hence, there is a need to model the impact of skidding systems on the upper (fertile) layer of the soil. This study aims to develop such a model using the D'Alembert principle, the method of Laplace transforms, and a modified Kelvin-Voigt model. The work shows that subdividing the tractor-bundle-soil system makes it possible to consider the dynamic effect of the vibrating tractor on the soil and soil's ability to undergo deformation separately. In addition, the study developed individual models for the first subsystem that determine vibration effects on soil caused by an unloaded tractor and two loaded skidding systems using different methods of semi-suspended skidding. The present findings can be used to predict the degree of dynamic soil compaction without conducting direct on-site experiments and thus minimize the negative impact of forestry operations on the local ecosystem. The current data also allow simplifying design models for complex forwarders.
L'oral à l'ère du numérique : enseigner et apprendre autrement ?
Authors: Abou Haidar Laura
Published: January 2022

Cette contribution se propose d'appréhender la manière dont le numérique induit des transformations aussi bien à la manière d'envisager l'oral et de le (re)définir, que de l'enseigner et de l'apprendre. On commencera par rappeler les dimensions les plus impactées par le numérique, par rapport à un dispositif d'enseignement/apprentissage des langues basé sur le présentiel : la temporalité, les modes d'interaction et leurs rituels, la gestion de la plurisensorialité et de la multimodalité, qui sont amenées à s'adapter aux dispositifs numériques utilisés. Néanmoins, le numérique peut constituer une véritable opportunité pour ce qui est de l'oral. La multiplicité des ressources numériques permet de démultiplier les effets bénéfiques de "laboratoire de langue" puisque le smartphone ou l'ordinateur se transforment potentiellement en "cabine individuelle de langue" ; en particulier, le numérique permet un travail particulièrement ciblé, individualisé et intensif, que ce soit sur l'écoute (identifier, discriminer, comparer, comprendre…) ou sur la production (avec des logiciels de plus en plus répandus comme Audacity), ce qui permet d'augmenter les performances de perception et de production des apprenants. Cela va également dans le sens du renforcement de l'autonomisation de l'apprenant et de la diversification des stratégies d'apprentissage. Le numérique permet d'intégrer la dimension gestuelle et kinésique globale, et donne à voir/entendre une multiplicité de ressources d'une grande richesse. L'essor des corpus oraux à visée didactique, et la dynamique créative observée sur la toile, montrent, si besoin était, que l'époque où l'on parlait de la phonétique comme du "parent pauvre de la didactique" est bel et bien révolue.
De la pensée informatique à l'apprentissage des langues : une histoire à construire
Authors: Reffay Christophe
Published: January 2022

Partant d'expériences sur l'apprentissage de la pensée informatique à l'école primaire, l'exposé montrera l'importance de faire apprendre la programmation aux élèves mais aussi la motivation qu'ils ont à le faire. Au-delà des concepts informatiques qui sont en jeu pour les élèves de l'école primaire, on proposera, pour des élèves plus âgés, des prolongements vers d'autres disciplines et en particulier l'apprentissage des langues. La littérature fait état d'expériences où les élèves sont amenés à interagir avec un robot ou avec différents types d'objets numériques déjà programmés. Mais l'idée ici serait plutôt de s'appuyer sur les compétences de programmation que les élèves acquièrent de plus en plus jeunes, pour les amener à construire un support interactif permettant de manipuler les éléments de langue mis en scène dans un jeu, une histoire ou une situation. En mobilisant un environnement de programmation créative (par exemple Scratch), les enseignants peuvent maintenant motiver leurs élèves dans la production de nouvelles formes d'écriture où il s'agit de définir les décors, les personnages, les mouvements et les interactions. De par leur aspect interactif, de tels supports constituent des objets motivants à produire ou à utiliser pour les élèves, et offrent de nouvelles perspectives à l'enseignement.