bluuebunny/crossref_metadata_2025 huggingface dataset:
Carterina: its morphology, structure and taxonomic position
Authors:   Institute of historical Geology and Palaeontology, Hansen Hans Jørgen , Grønlund H. ,   Institute of historical Geology and Palaeontology
Published: March 2022

The external and internal morphology of Carterina spiculotesta is described and illustrated. Sections and decalcified preparations demonstrate that the spicules composing the wall have a concentric lay­ering. There is, moreover, a 0.1-0.2 µm sub-layering at right angles to the long axis of the spicules. The inner organic chamber lining is different from the organic matrix in being laminated and more compact. There are no pores in the shell. It is concluded that the spicules most likely are secreted by the animal. It is suggested that Carterina should be transferred to the Textulariina and that the 'allochthonous' spic­ules ('allochthonous' relative to their final position in the wall) must be regarded as distinct from the 'autochthonous' material in the walls of Miliolina and Rotaliina.
THE EFFECT OF DUOLINGO USAGE ON STUDENTS’ VOCABULARY MASTERY OF SEVENTH-GRADE STUDENTS AT MTs PAB 1 HELVETIA
Authors: Ali Nurbaiti
Published: March 2022

Due to Covid-19 pandemic, most of teaching learning process was not conducted at class. The teacher and students had the teaching learning process via online on the internet. This situation occurred serious problem for the students related to the teaching learning goals. Most of students found more difficulties in learning English. Less interactions at class made their vocabulary knowledge and ability became low. They had no chance to explore their vocabulary. In fact, they were difficult to mention some vocabularies around them. They also felt difficult to share their opinion by using English. This research aimed to know the difference, increase or improvement and effect of Duolingo usage on students’ vocabulary mastery. This research was a quantitative approach. The research location was at MTs PAB 1 Helvetia on Jl. Veteran Pasar IV Helvetia with sixty students as the sample. The sample was divided into Experimental and Control group. The Experimental group was taught vocabulary by using Duolingo while the Control group was taught vocabulary by common method. The students’ score result was the primer data and analyzed by using T-Test formula. The calcualtion used SPSS (Statistical Package for Social Science) 20.0 to count the data as valid as it was. The research finding proved that there was a significance difference, increase or improvement and effect of Duolingo usage on students vocabulary mastery. Duolingo usage affected students’ vocabulary mastery of the seventh-grade students at MTs PAB 1 Helvetia. Keywords : Duolingo, Vocabulary Mastery
THE EFFECT OF YOUTUBE VIDEOS ON STUDENTS’ ABILITY IN WRITING EXPOSITION TEXT OF THE TENTH GRADE STUDENTS OF SMA SWASTA MELATI BINJAI
Authors: Conny Conny , Br Manik Indah Lestari
Published: March 2022

Penelitian ini berkaitan dengan desain penelitian eksperimental yang bertujuan untuk mencari pengaruh video YouTube terhadap kemampuan siswa dalam menulis teks eksposisi analitik. Sebanyak 60 siswa kelas X SMA Swasta Melati Binjai diambil sebagai subjek penelitian. Tes menulis berupa lima macam judul yang terdiri dari beberapa topik fenomenal dan digunakan untuk memperoleh data tentang variabel tersebut. Penulis meminta siswa untuk memilih hanya satu judul yang diberikan. Mereka menulis teks eksposisi analitis yang terdiri dari sekitar 100 kata selama sekitar 45 menit. Data akhir kemudian dianalisis dengan menggunakan teknik analisis uji-t bahwa hasilnya menunjukkan koefisien tinggi dan signifikan dengan melihat koefisien thitung (3,055) lebih besar dari koefisien ttabel (1,70113). Artinya ada pengaruh video YouTube terhadap kemampuan menulis teks eksposisi analitik pada siswa kelas X SMA Swasta Melati Binjai. Dengan demikian hipotesis penelitian diterima.
THE EFFECT OF COGNITIVE STRATEGY INSTRUCTION (CSI) ON THE STUDENTS’ READING COMPREHENSION OF THE TENTH GRADE STUDENTS AT SMA SWASTA MELATI BINJAI IN ACADEMIC YEAR OF 2020/2021
Authors: Maharani Resty , Juliantina Juliantina
Published: March 2022

Penelitian ini berkaitan dengan desain penelitian eksperimental yang mencari pengaruh Cognitive Strategy Instruction (CSI) pada pemahaman membaca siswa dalam teks laporan. Permasalahan yang penulis temukan adalah sebagian besar siswa mengalami kesulitan dalam memahami bacaan dan membutuhkan waktu yang lama untuk menemukan ide pokok dalam teks bacaan. Sebanyak 60 siswa kelas X SMA Swasta Melati Binjai tahun ajaran 2020/2021 diambil sebagai subjek penelitian. Tes membaca berupa pilihan ganda yang terdiri dari 20 item digunakan untuk memperoleh data tentang variabel. Data akhir kemudian dianalisis dengan menggunakan teknik analisis uji-t. Selain instrumen pengujian pemahaman siswa dalam membaca teks laporan yang dianalisis valid dengan melihat bahwa koefisien thitung (8,03) jauh lebih besar daripada koefisien ttabel (1,70113) dan juga dianalisis reliabel dengan melihat bahwa koefisien reliabilitas (0,907) jauh lebih besar daripada koefisien rtabel (0,3061); hal ini juga ditunjukkan melalui analisis uji-t bahwa koefisiennya tinggi dan signifikan dengan melihat koefisien thitung (3,24) lebih besar dari koefisien ttabel (1,70113). Artinya, terdapat pengaruh yang signifikan dari Cognitive Strategy Instruction (CSI) terhadap pemahaman membaca teks laporan pada siswa kelas X SMA Swasta Melati Binjai tahun ajaran 2020/2021. Dengan demikian hipotesis penelitian diterima.
KEMAMPUAN MENGANALISIS UNSUR INTRINSIK DAN EKSTRINSIK DALAM NOVEL ASSALAMUALAIKUM BEIJING KARYA ASMA NADIA
Authors: Sidiqin M Ali , Beru Ginting Sri Ulina
Published: March 2022

Penelitian ini bertujuan untuk mencari kemampuan menganalisis unsur intrinsik dan ekstrinsik dalam novel Assalamualaikum Beijing karya Asma Nadia oleh siswa kelas XI SMA Swasta Melati Binjai tahun pembelajaran 2020/2021. Selain itu untuk mengetahui sejauh mana siswa memahami dan menerapkan unsur intrinsik dan ekstrinsik pada novel Indonesia yang terdapat pada KD 7.2 di dalam KTSP SMA kelas XI. Penelitian ini termasuk kedalam jenis penelitian deskripsi kualitatif, Populasi pada penelitian ini adalah 22 siswa, yang terdiri dari 1 kelas yaitu XI-IPA, yang dijadikan sampel adalah seluruh jumlah populasi dari jumlah siswa yaitu 22 siswa. Dalam pengambilan data, peneliti menggunakan kriteria dalam penskoran kemampuan menganalisis unsur intrinsik dan ekstrinsik novel oleh siswa. Hasil analisis data menunjukan kemampuan menganalisis unsur intrinsik dan ekstrinsik dalam novel Assalamualaikum Beijing karya Asma Nadia oleh siswa kelas XI IPA SMA Swasta Melati Binjai tahun pembelajaran 2017/2018 berada pada klasifikasi baik dan persentase daya serap mencapai 73%, yaitu terdapat pada kriteria sedang.Selain itu siswa juga mempunyai kelebihan dalam aktif berbicara dan berpendapat karena siswa diberikan kesempatan untuk berdiskusi. Siswa juga memiliki rasa percaya diri untuk bertanya kepada guru jika siswa tidak mengerti tentang materi yang telah disampaikan. Perlu adanya peningkatan lagi proses pembelajaran siswa belajarnya pada pembelajaran menganalisis unsur intrinsik dan ekstrinsik novel terutama pada siswa kelas XI agar dapat terus meningkatkan kualitas supaya menjadi lebih baik lagi.
PENGARUH BIMBINGAN KELOMPOK TEKNIK ANALISIS TRANSAKSIONAL TERHADAP BULLYING VERBAL PADA REMAJA DI DESA CEMPA KECAMATAN HINAI KABUPATEN LANGKAT
Authors: Lubis Firda Safitri , Simarmata Sari Wardani , Muhazir Muhazir
Published: March 2022

Tujuan penelitian ini adalah untuk mengetahui pengaruh bimbingan kelompok teknik analisis transaksional terhadap bullying verbal pada remaja di Desa Cempa Kecamatan Hinai Kabupaten Langkat. Metode penelitian akan menggunakan pendekatan kuantitatif. Sampel penelitian ini berjumlah 8 orang terdiri dari 4 orang pada kelompok eksperimen dan 4 orang pada kelompok kontrol. Berdasarkan hasil penelitian dan analisis data dapat disimpulkan bahwa berdasarkan nilai rata-rata hasil angket kelompok eksperimen yaitu 96 menunjukkan bahwa pemahaman dan sikap kededpannya terkait perilaku bullying verbal remaja kelompok eksperimen termasuk dalam kategori baik, sedangkan berdasarkan nilai rata-rata hasil angket kelompok kontrol yaitu 72,25 menunjukkan bahwa pemahaman dan sikap kedepannya terkait perilaku bullying verbal remaja kelompok kontrol termasuk dalam kategori buruk. Berdasarkan hasil pengujian hipotesis diperoleh nilai thitung > ttabel, yaitu 5,37 > 4,30 sehingga dapat disimpulkan bahwa terdapat pengaruh bimbingan kelompok teknik analisis transaksional terhadap bullying verbal pada remaja di Desa Cempa Kecamatan Hinai Kabupaten Langkat.
PELAKSANAAN BIMBINGAN KKELOMPOK UNTUK MENGURANGI PERILAKU BULLYING REMAJA DUSUN IV PAYA KANGKUNG DESA KEPALA SUNGAI
Authors: Ginting Romica , Batubara Azizah , Muhazir Muhazir
Published: March 2022

Tujuan penelitian ini adalah untuk mengetahui pelaksanaan bimbingan kelompok dapat mengurangi perilaku bullying remaja Dusun IV Paya Kangkung Desa Kepala Sungai.Subjek penelitian ini berjumlah 8 remaja. Instrumen yang digunakan adalah dengan menyebarkan angket pada seluruh subjek sebagai bahan masukan untuk mengetahui situasi yang sebenarnya situasi remaja di Dusun IV Paya Kangkung Desa Kepala Sungai, dengan jenis penelitian eksperimen dengan metode pre-exsperimentaldesign dan analisis datanya menggunakan Independent Samples Test. Dari hasil analisis Independent Samples Test terdapat perilaku Bullying sebesar 0,004 atau probabilitas di bawah alpha 0,05 (0,004 < 0,05). Dengan demikian hipotesis dalam penelitian ini dapat diterima, yaitu Hasil penelitian menunjukkan pelaksanaan bimbingan kelompok dapat mengurangi perilaku bullying remaja yaitu dengan skor rata-rata pre-test 98,9 berada pada katagori rendah dan skor rata-rata post-test meningkat menjadi 116,62 berada pada katagori tinggi. dan saran penulis Bagi orang tua remaja agar sebisa mungkin selalu memberikan masukan dan pengawasan khususnya dalam keseharian remaja dengan menanamkan kesadaran bahwa semua orang bisa menjadi korban atau malah menjadi pelaku bullying.
PENGARUH MEDIA POWERPOINT TERHADAP KEMAMPUAN MENULIS TEKS EKSPLANASI SISWA KELAS XI SMK SWASTA PUTRA JAYA STABAT
Authors: Syahputra Rahman , Sebayang Sri Hastuti , Wirevenska Ice
Published: March 2022

Tujuan penelitian ini adalah untuk mengetahui pengaruh penggunaan media powerpoint terhadap kemampuan menulis teks eksplanasi siswa kelas XI SMK Swasta Putra Jaya Stabat tahun pelajaran 2020/2021. Jenis penelitian ini adalah penelitian eksperimen dengan desain penelitian one group pretest postest design. Instrumen penelitian ini adalah tes tertulis yaitu tes uraian menulis teks eksplanasi. Berdasarkan hasil analisis data dapat disimpulkan bahwa terdapatpeningkatan nilai rata-ratanya yaitu 42,6 pada saat pretest menjadi 72,8 pada saat postest. Kemudian hasil penelitian ini juga menunjukkan adanya pengaruh penggunaan media powerpoint terhadap kemampuan menulis teks eksplanasi oleh siswa kelas XI SMK Swasta Putra Jaya Stabat tahun pelajaran 2020/2021 yang ditunjukkan dengan hasil uji t, yaitu nilaithitung>ttabel(45,29 > 2,05).
EFEKTIFITAS PENERAPAN METODE TUTOR SEBAYA UNTUK MENINGKATKAN HASIL BELAJAR BAHASA INGGRIS TOPIK ANNOUNCEMENT PADA SISWA KELAS X IPS.1 SMA NEGERI 5 MEDAN DI SEMESTER GANJIL TAHUN PELAJARAN 2018/2019
Authors: Hasibuan Poibe
Published: March 2022

Permasalahan yang menjadi bahasan topik dalam penelitian ini adalah bagaimana efektifitas penerapan metode tutor sebaya untuk meningkatkan hasil belajar Bahasa Inggris topik announcement. Tujuan yang ingin dicapai dalam penelitian ini adalah untuk mengetahui sejauh mana peningkatan hasil belajar siswa dengan penerapan model pembelajaran tutor sebaya. Sumber data penelitian ini adalah siswa semester ganjil di kelas X IPS.1 SMA Negeri 5 Medan yang berjumlah 34 siswa. Waktu Peneltian ini dilaksanakan pada semester ganjil tahun ajaran 2018//2019 selama 4 Bulan. Data yang dikumpulkan adalah data kuantitatif dan kualitatif. Data kuantitatif adalah data yang diperoleh dari hasil tes formatif pada setiap siklus. Sedangkan data kualitatif berupa hasil observasi pada tiap siklus pembelajaran. Data yang diperoleh kemudian konversikan dengan kriteria keberhasilan untuk mengetahui apakah hasil belajar siswa dapat diketahui bagaimana peningkatannya. Hasil penelitian penerapan model pembelajaran tutor sebaya untuk meningkatkan hasil belajar kelas X IPS.1 SMA Negeri 5 Medan pada pelajaran hasil Bahasa Inggris topik announcement pada prasiklus di dapatkan hanya 11 siswa atau 32,35% dari seluruh siswa. Pada Siklus I ada sejumlah siswa yang berhasil meningkatkan hasil belajar bertambah 9 menjadi siswa 20 atau 58,82%. Pada Siklus II siswa yang berhasil meningkat hasil belajarnya mencapai 82,35% atau 28 siswa dari 34 siswa. Keberhasilan siswa dalam hasil belajar Bahasa Inggris topik announcement pada kelas X IPS.1 SMA Negeri 5 Medan mengalami adanya peningkatan yang signifikan. Hasil pengamatan kondisi observasi nilai rata-rata siswa 55,33 dan meningkat menjadi 67,28 pada Siklus I dan pada Siklus II yaitu meningkat menjadi 81,99. Kesimpulan efektifitas penerapan metode tutor sebaya terbukti dapat meningkatkan hasil belajar Bahasa Inggris topik announcement pada siswa dengan baik sehingga layak diterapkan di SMA Negeri 5 Medan.
UPAYA MENINGKATKAN KETERAMPILAN MENULIS KARYA ILMIAH MELALUI PENDEKATAN KONTEKSTUAL ELEMEN INKUIRI PADA SISWA KELAS X SMA NEGERI 2 KABANJAHE
Authors: Sembiring Rajin
Published: March 2022

Menulis sebagai salah satu kegiatan yang harus dihadapi siswa dalam proses pembelajaran, terutama untuk mata pelajaran Bahasa dan Sastra Indonesia. Melalui kegiatan menulis diharapkan siswa dapat menuangkan idenya baik yang bersifat ilmiah maupun imajinatif. Sekolah sebagai tempat siswa mengenyam pendidikan diharapkan dapat memberikan pembelajaran tentang menulis dengan baik menggunakan teknik yang tepat sehingga potensi dan daya kreativitas siswa dapat tersalurkan dengan baik, tidak hanya potensi yang terpendam. Permasalahan penelitian ini adalah: (1) bagaimana peningkatan keterampilan menulis cerpen siswa kelas X.4 SMA Negeri 2 Kabanjahe setelah mengikuti pembelajaran dengan teknik latihan terbimbing berdasarkan ilustrasi tokoh idola; (2) bagaimana perubahan sikap dan perilaku siswa kelas X.4 SMA Negeri 2 Kabanjahe terhadap pembelajaran menulis cerpen, setelah mengikuti pembelajaran dengan teknik latihan terbimbing berdasarkan ilustrasi tokoh idola. Tujuan penelitian ini adalah: (1) mendeskripsikan peningkatan keterampilan menulis cerpen siswa kelas X.4 SMA Negeri 2 Kabanjahe setelah mengikuti pembelajaran dengan teknik latihan terbimbing berdasarkan ilustrasi tokoh idola; (2) mendeskripsikan pendapat siswa kelas X.4 SMA Negeri 2 Kabanjahe terhadap pembelajaran menulis cerpen, setelah mengikuti pembelajaran dengan teknik latihan terbimbing berdasarkan ilustrasi tokoh idola. Penelitian ini dilakukan dengan menggunakan prosedur Penelitian Tindakan Kelas (PTK) dengan menggunakan dua siklus yaitu Siklus I dan Siklus II. Tiap siklus terdiri atas: (1) perencanaan; (2) tindakan; (3) observasi; dan (4) refleksi. Data penelitian diambil melalui tes dan nontes. Data tes yaitu berupa penilaian keterampilan menulis cerpen. Sedangkan alat pengambilan data nontes yang digunakan berupa pedoman observasi, jurnal, wawancara, dan dokumentasi foto. Selanjutnya data dianalisis secara kuantitatif dan kualitatif. Simpulan dari penelitian ini yaitu peningkatan keterampilan menulis cerpen siswa kelas X.4 SMA Negeri 2 Kabanjahe setelah mengikuti pembelajaran dengan teknik latihan terbimbing berdasarkan ilustrasi tokoh idola terlihat dari hasil tes menulis cerpen siswa pada tahap prasiklus, Siklus I, dan Siklus II. Nilai rata-rata siswa pada prasiklus mencapai 53 kemudian setelah dilakukan Siklus I meningkat menjadi 73 atau meningkat sebanyak 25,94% dari prasiklus. Setelah dilakukan Siklus II meningkat menjadi 78 atau meningkat sebanyak 7,58% dari Siklus I dan meningkat sebanyak 49,22% dari prasiklus.
ENTREPRENEURSHIP IN SMALL TOWNS OF THE URALS
Authors:   Ural State University of Economics, ZABOROVA ELENA N.
Published: March 2022

The article examines the state and prospects of entrepreneurship development in small towns of the Sverdlovsk region on the basis of a number of empirical studies. It is noted that business in a small city operates in the general paradigm of the legal and socio-cultural conditions of the country, but at the same time has a number of specific features. The most difficult conditions are observed in small and medium-sized businesses, which are experiencing a number of problems (high taxes, difficulty in obtaining microloans, a decrease in the purchasing power of the population, etc.). The most promising areas of entrepreneurship development in a small city are highlighted (using the spatial advantages of small cities, agricultural and tourism business, centers for the development of new high-tech industries, resuscitation due to the movement of residents of large cities as the information and digital era unfolds).
THE CHALLENGE OF BANKING SERVICES DEVELOPMENT – GIVING ITS RIGHTFUL PLACE TO CUSTOMER SATISFACTION
Authors: Moraru Andreea-Daniela , Duhnea Cristina , Mieilă Mihai , Ghiță-Mitrescu Silvia , Ilie Margareta , Necula Anda Ileana
Published: March 2022

Lately, the global banking services industry has faced numerous challenges: the digitalization, increased competition, the instability of monetary and foreign exchange markets, and the volatility of exchange rates. However, at present, banks are facing the greatest challenge of all that is, placing the customers at the centre of business and the systematic follow-up of customer satisfaction. The present paper aims at assessing the influence of a series of determinants and socio-demographic factors on customer satisfaction with banking services in Romania, using the probit and logit models. The research focused on the Romanian banking market due to its distinctiveness within the European context – performance indicators above the European average during the past five years and a concentration level that discloses a significant growth potential. The results of the two models employed revealed similar results, with the most influential variables on customer satisfaction being convenience, e-banking, quality, and revenues.
SUPPORT SYSTEM FOR SPECULATION BY EXCHANGE TRADES FUNDS
Authors: Tumaševičius Gediminas , Maknickienė Nijolė
Published: March 2022

The paper examines the possibilities of speculating in exchangetraded funds by using artificial intelligence. The main goal of the research is to create a support system for speculative decisionmaking for investors operating in exchange-traded funds market. The research will be based on the theoretical aspects of artificial intelligence and speculation of exchange-traded funds. The support system is developed on the basis of reinforcement learning, the methods of synthesis, concretization and generalization were used to create and detail the system, as well as the methods of mathematical-statistical analysis were used to process them. Successful application of the chosen methodology in the design of the support system has resulted in positive trade results. Successful research broadens the boundaries for usage of deep reinforcement learning, and provides a basis for further development of the support system for exchange-traded funds. The support system put in place will shorten the time between the occurrence of a trading signal and the decision of the investor, which will help to reduce the loss of potential profits.
The 3D Kinematics of the Orion Nebula Cluster: NIRSPEC-AO Radial Velocities of the Core Population
Authors: Theissen Christopher A. , Konopacky Quinn M. , Lu Jessica R. , Kim Dongwon , Zhang Stella Y. , Hsu Chih-Chun , Chu Laurie , Wei Lingfeng
Published: March 2022

The kinematics and dynamics of stellar and substellar populations within young, still-forming clusters provide valuable information for constraining theories of formation mechanisms. Using Keck II NIRSPEC+AO data, we have measured radial velocities for 56 low-mass sources within 4′ of the core of the Orion Nebula Cluster (ONC). We also remeasure radial velocities for 172 sources observed with SDSS/APOGEE. These data are combined with proper motions measured using HST ACS/WFPC2/WFC3IR and Keck II NIRC2, creating a sample of 135 sources with all three velocity components. The velocities measured are consistent with a normal distribution in all three components. We measure intrinsic velocity dispersions of (

σ

v

α

,

σ

v

δ

,

σ

v

r

) = (1.64 ± 0.12, 2.03 ± 0.13,

2.56

−
0.17

+
0.16

) km s−1. Our computed intrinsic velocity dispersion profiles are consistent with the dynamical equilibrium models from Da Rio et al. (2014) in the tangential direction but not in the line-of-sight direction, possibly indicating that the core of the ONC is not yet virialized, and may require a nonspherical potential to explain the observed velocity dispersion profiles. We also observe a slight elongation along the north–south direction following the filament, which has been well studied in previous literature, and an elongation in the line-of-sight to tangential velocity direction. These 3D kinematics will help in the development of realistic models of the formation and early evolution of massive clusters.
Gamma-Ray Burst Prompt Emission Spectrum and E
p Evolution Patterns in the ICMART Model
Authors: Shao Xueying , Gao He
Published: March 2022

In this paper, we simulate the prompt emission light curve, spectrum, and E
p evolution patterns of gamma-ray bursts (GRBs) within the framework of the Internal-collision-induced Magnetic Reconnection and Turbulence (ICMART) model. We show that this model can produce a Band-shaped spectrum, whose parameters (E
p, α, β) could follow the typical distribution of GRB observations, as long as the magnetic field and the electron acceleration process in the emission region are under appropriate conditions. On the other hand, we show that for one ICMART event, E
p evolution is always a hard-to-soft pattern. However, a GRB light curve is usually composed of multiple ICMART events that are fundamentally driven by the erratic activity of the GRB central engine. In this case, we find that if one individual broad pulse in the GRB light curve is composed of multiple ICMART events, the overall E
p evolution could be disguised as an intensity-tracking pattern. Therefore, mixed E
p evolution patterns can coexist in the same burst, with a variety of combined patterns. Our results support the ICMART model as a competitive model to explain the main properties of GRB prompt emission. The possible challenges faced by the ICMART model are also discussed in detail.
Asteroseismology of 3642 Kepler Red Giants: Correcting the Scaling Relations Based on Detailed Modeling
Authors: Li 李 Tanda 坦达 , Li 李 Yaguang 亚光 , Bi 毕 Shaolan 少兰 , Bedding Timothy R. , Davies Guy , Du 杜 Minghao 明昊
Published: March 2022

This paper presents a correction to the scaling relations for red giant stars using model-based masses and radii. We measure radial-mode frequencies from Kepler observations for 3642 solar-like oscillators on the red giant branch and use them to characterize the stars with grid-based modeling. We determine fundamental stellar parameters with good precision: the typical uncertainty is 4.5% for mass, 16% for age, 0.006 dex for surface gravity, and 1.7% for radius. We also achieve good accuracy for estimated masses and radii, based on a comparison with those determined for eclipsing binaries. We find a systematic offset of ∼15% in mass and ∼7% in radius between the modeling solutions and the scaling relations. Further investigation indicates that these offsets are mainly caused by a systematic bias in the Δν scaling relation: the original scaling relation underestimates the Δν value by ∼4%, on average, and it is important to correct for the surface term in the calibration. We find no significant offset in the

ν

max

scaling relation, although a clear metallicity dependence is seen and we suggest including a metallicity term in the formulae. Lastly, we calibrate new scaling relations for red giant stars based on observed global seismic parameters, spectroscopic effective temperatures and metallicities, and modeling-inferred masses and radii.
A New Catalog of Head–Tail Radio Galaxies from the VLA FIRST Survey
Authors: Sasmal Tapan K. , Bera Soumen , Pal Sabyasachi , Mondal Soumen
Published: March 2022

The head–tail (HT) morphology of radio galaxies is seen for a class of radio sources where the primary lobes are being bent in the intercluster weather due to strong interactions between the radio jets and their respective intracluster medium. A systematic search has been carried out for new HT radio galaxies from the Very Large Array Faint Images of the Radio Sky at Twenty-Centimeters survey database at 1400 MHz. Here, we present a catalog of 717 new HT sources, among which 287 are narrow-angle tail (NAT) sources whose opening angle between the two lobes is less than 90°, and 430 are wide-angle tail (WAT) whose the opening angle between the two lobes is greater than 90°. NAT radio sources are characterized by tails bent in a narrow “V”-like shape; the jet bending in the case of WAT radio galaxies are such that the WATs exhibit wide “C”-like morphologies. Optical counterparts are found for 359 HT sources. We report HT sources with luminosity ranges 1038 ≤ L
1.4 GHz ≤ 1045 erg s−1 and redshifts up to 2.01. The various physical properties of these HT sources are mentioned here. Some statistical studies have been done for this large number of newly discovered HT sources.
Pitfalls of Periodograms: The Nonstationarity Bias in the Analysis of Quasiperiodic Oscillations
Authors: Hübner Moritz , Huppenkothen Daniela , Lasky Paul D. , Inglis Andrew R.
Published: March 2022

Quasiperiodic oscillations (QPOs) are an important key to understand the dynamic behavior of astrophysical objects during transient events like gamma-ray bursts, solar flares, and magnetar flares. Searches for QPOs often use the periodogram of the time series and perform spectral density estimation using a Whittle likelihood function. However, the Whittle likelihood is only valid if the time series is stationary since the frequency bins are otherwise not statistically independent. We show that if time series are nonstationary, the significance of QPOs can be highly overestimated and estimates of the central frequencies and QPO widths can be overconstrained. The effect occurs if the QPO is only present for a fraction of the time series and the noise level is varying throughout the time series. This can occur, for example, if background noise from before or after the transient is included in the time series or if the low-frequency noise profile varies strongly over the time series. Thus, we highlight the importance of careful segment selection prior to the analysis. We confirm the presence of this bias in previously reported results from solar flare data and show that significance can be highly overstated. Finally, we provide some suggestions that help identify whether an analysis is affected by this bias.
Dust Resurgence in Protoplanetary Disks Due to Planetesimal–Planet Interactions
Authors: Bernabò Lia Marta , Turrini Diego , Testi Leonardo , Marzari Francesco , Polychroni Danai
Published: March 2022

Observational data on the dust content of circumstellar disks show that the median dust content in disks around pre-main-sequence stars in nearby star-forming regions seems to increase from ∼1 to ∼2 Myr and then decline with time. This behavior challenges the models where the small dust grains steadily decline by accumulating into larger bodies and drifting inwards on a short timescale (≤1 Myr). In this Letter we explore the possibility to reconcile this discrepancy in the framework of a model where the early formation of planets dynamically stirs the nearby planetesimals and causes high-energy impacts between them, resulting in the production of second-generation dust. We show that the observed dust evolution can be naturally explained by this process within a suite of representative disk-planet architectures.
NGC 5846-UDG1: A Galaxy Formed Mostly by Star Formation in Massive, Extremely Dense Clumps of Gas
Authors: Danieli Shany , van Dokkum Pieter , Trujillo-Gomez Sebastian , Kruijssen J. M. Diederik , Romanowsky Aaron J. , Carlsten Scott , Shen Zili , Li Jiaxuan , Abraham Roberto , Brodie Jean , Conroy Charlie , Gannon Jonah S. , Greco Johnny
Published: March 2022

It has been shown that ultra-diffuse galaxies (UDGs) have higher specific frequencies of globular clusters, on average, than other dwarf galaxies with similar luminosities. The UDG NGC 5846-UDG1 is among the most extreme examples of globular cluster–rich galaxies found so far. Here we present new Hubble Space Telescope observations and analysis of this galaxy and its globular cluster system. We find that NGC 5846-UDG1 hosts 54 ± 9 globular clusters, three to four times more than any previously known galaxy with a similar luminosity and higher than reported in previous studies. With a galaxy luminosity of L

V,gal ≈ 6 × 107
L
⊙ (M
⋆ ≈ 1.2 × 108
M
⊙) and a total globular cluster luminosity of L

V,GCs ≈ 7.6 × 106
L
⊙, we find that the clusters currently comprise ∼13% of the total light. Taking into account the effects of mass loss from clusters during their formation and throughout their lifetime, we infer that most of the stars in the galaxy likely formed in globular clusters, and very little to no “normal” low-density star formation occurred. This result implies that the most extreme conditions during early galaxy formation promoted star formation in massive and dense clumps, in contrast to the dispersed star formation observed in galaxies today.
The Search for a Counterpart to NuSTAR J053449+2126.0
Authors: Rodriguez Antonio C. , Yao Yuhan , De Kishalay , Kulkarni S. R.
Published: March 2022

(ATel #15171) have recently reported the discovery of an X-ray source, NuSTAR J053449+2126.0, during a calibration observation which took place on 2020 April 25. We scan the Zwicky Transient Facility alerts and archival photometry to determine the nature of the source. Palomar Gattini-IR is searched as well. We identify no obvious counterpart candidate. Follow-up X-ray and optical studies are needed to determine the true counterpart.
Yonder: A Python Package for Data Denoising and Reconstruction
Authors: Chen 彭 Peng 琛 , S. de Souza Rafael
Published: March 2022

We present a standalone implementation of a data-deconvolution method based on singular value decomposition. The tool is written in python and packaged in the open-source yonder package. yonder receives as input two matrices, one for the data and another for the errors, and outputs a denoised version of the original dataset. In this Research Note, we briefly describe the methodology and show a demonstration of the yonder on a simulated dataset.
Length–weight relations and condition factors of 34 Oxynoemacheilus species (Actinopterygii: Cypriniformes: Nemacheilidae) from Turkish inland waters
Authors: Çiçek Erdoğan , Seçer Burak , Eagderi Soheil , Sungur Sevil
Published: March 2022

This study aimed to provide the length–weight relations and condition factors of 34 Oxynoemacheilus species from the inland waters of Turkey: Oxynoemacheilus anatolicus Erk’akan, Özeren et Nalbant, 2008; Oxynoemacheilus angorae (Steindachner, 1897); Oxynoemacheilus argyrogramma (Heckel, 1847); Oxynoemacheilus arsaniasus Freyhof, Kaya, Turan et Geiger, 2019; Oxynoemacheilus atili Erk’akan, 2012; Oxynoemacheilus banarescui (Delmastro, 1982); Oxynoemacheilus bergianus (Derjavin, 1934); Oxynoemacheilus cf. bureschi (Drensky, 1928); Oxynoemacheilus ceyhanensis (Erk’akan, Nalbant et Özeren, 2007); Oxynoemacheilus ciceki Sungur, Jalili et Eagderi, 2017; Oxynoemacheilus cilicicus Kaya, Turan, Bayçelebi, Kalayci et Freyhof, 2020; Oxynoemacheilus cyri (Berg, 1910); Oxynoemacheilus ercisianus (Erk’akan et Kuru, 1986); Oxynoemacheilus eregliensis (Bănărescu et Nalbant, 1978); Oxynoemacheilus euphraticus (Bănărescu et Nalbant, 1964); Oxynoemacheilus evreni (Erk’akan, Nalbant et Özeren, 2007); Oxynoemacheilus frenatus (Heckel, 1843); Oxynoemacheilus germencicus (Erk’akan, Nalbant et Özeren, 2007); Oxynoemacheilus hamwii (Krupp et Schneider, 1991); Oxynoemacheilus hazarensis Freyhof et Özuluğ, 2017; Oxynoemacheilus insignis (Heckel, 1843); Oxynoemacheilus kaynaki Erk’akan, Özeren et Nalbant, 2008; Oxynoemacheilus mediterraneus (Erk’akan, Nalbant et Özeren, 2007); Oxynoemacheilus namiri (Krupp et Schneider, 1991); Oxynoemacheilus nasreddini Yoğurtçuoğlu, Kaya et Freyhof, 2021; Oxynoemacheilus paucilepis (Erk’akan, Nalbant et Özeren, 2007); Oxynoemacheilus samanticus (Bănărescu et Nalbant, 1978); Oxynoemacheilus seyhanensis (Bănărescu, 1968); Oxynoemacheilus seyhanicola (Erk’akan, Nalbant et Özeren, 2007); Oxynoemacheilus simavicus (Balik et Bănărescu, 1978); Oxynoemacheilus theophilii Stoumboudi, Kottelat et Barbieri, 2006; Oxynoemacheilus tigris (Heckel, 1843); Oxynoemacheilus veyselorum Çiçek, Eagderi et Sungur, 2018. Based on the results, the growth coefficient values (b) ranged from 2.770 (O. argyrogramma) to 3.285 (O. theophilii) with an R2 estimate greater than 0.91. Fulton’s condition factor (KF) of the studied fishes ranged from 0.598 (O. insignis) to 1.07 (O. nasreddini) . Relative conditions (KR) were found to have a narrow distribution range (0.856–1.014 with a mean of 1.005). The form factors of these species were calculated between 0.006 and 0.14, with a mean and median value of 0.01. This study represents the first reports of LWRs parameters for 22 species, new maximum total length data were bigger than given in FishBase for 21 species, and first species listing for maximum total length for seven species. The findings of this study provide useful information for further fisheries management and fish population dynamic studies.
The Power of Professional Nursing Practice – An Essential Element of Patient and Family Centered Care
Authors: Ponte Pat , Glazer Greer , Dann Emma , McCollum Kathleen , Gross Anne , Tyrrell Rosalie , Branowicki Patricia , Noga Patricia , Winfrey Marion , Cooley Mary , Saint-Eloi Suzelle , Hayes Carolyn , Nicolas Patrice , Washington Deborah
Published: March 2022

Understanding power and learning how to use it is critical if nurses' efforts to shape their practice and work environments are to be successful. As part of our efforts to develop a Fast-Track BSN-to-PhD nursing program, we met with nurse leaders from six organizations to explore what power means, how nurses acquire it, and how they demonstrate it in their practice. Through these discussions, we identified eight characteristics of powerful nursing practice that, together, form a framework that can guide nurses’ efforts to develop a powerful practice and shape the health care delivery settings and academic institutions in which they work. In this article we review recent studies of organizational power and share discussions which helped us better understand nursing power and the ways in which it is manifested. We also reflect on what power means for individual nurses and the profession and discuss how our insights influenced our Fast-Track program.
Healthy Buildings: Impact on Nurses and Nursing Practice
Authors: Guenther Robin , Gilmore Hall Anna
Published: March 2022

Mounting evidence indicates that buildings can be a significant cause of human illness and environmental degradation. According to the United States (US) Environmental Protection Agency, indoor air pollution is one of the top five environmental risks to public health in the US. This may be related, to a large extent, to the fact that US citizens spend as much as 95% of their time indoors. Health care leaders, designers, and architects, recognizing the connection between health and the buildings in which much time is spent, are engaging in sustainable design and construction for healthy, ‘green’ buildings. The purpose of this article is to assist nurses in understanding the impact that unhealthy buildings can have on nurses and nursing practice and to provide tools and resources to assist nurses in transforming the health care industry with the goal of creating healing environments and reducing the negative environmental impact of the health care industry. First definitions, current initiatives, and motivations related to sustainable designs will be presented. Next sustainable health care design strategies, such as site planning, clean transportation, water conservation, healthy materials selection, indoor environmental quality, and also the benefits of sustainable design will be discussed. The article will conclude by sharing a variety of resources nurses can use to create healing environments in health care settings.
Home Environmental Health Risks
Authors: Davis Allison
Published: March 2022

Home environmental health risks and the pollution of indoor residential air are becoming increasingly recognized as sources of injury and exacerbation of illness, particularly in vulnerable populations such as pregnant women, infants, children, the elderly, and those living with a chronic medical condition or disability. Nurses play a key role in prevention, education, and screening activities for patients. Core environmental health knowledge is essential for all nurses regardless of setting or population of practice. This article provides a review of the literature of five common home environmental health risks: lead, carbon monoxide, radon, pesticides, and the broad chemical category of volatile organic compounds. Particular emphasis is placed on the review of articles that address low-dose exposures, such as those most commonly found in the residential environment. Current standards of practice regarding risk minimizations are discussed, and nationally recognized preventative action steps and environmental health resources are presented.
Global Warming: A Public Health Concern
Authors: Afzal Brenda
Published: March 2022

Over the last 100 years the average temperature on the Earth has risen approximately 1ºFahrenheit (F), increasing at a rate twice as fast as has been noted for any period in the last 1,000 years. The Arctic ice cap is shrinking, glaciers are melting, and the Arctic permafrost is thawing. There is mounting evidence that these global climate changes are already affecting human health. This article provides a brief overview of global warming and climate changes, discusses effects of climate change on health, considers the factors which contribute to climate changes, and reviews individual and collective efforts related to reducing global warming.
Regulatory, Institutional, and Market-Based Approaches Towards Achieving Comprehensive Chemical Policy Reform.
Authors: Welker-Hood Kristen , Condon Marian , Wilburn Susan
Published: March 2022

The purpose of this article is to inform nurses and other health care professionals about the nexus between the environment and health and present approaches in which they can be involved so as to support comprehensive reform of chemicals management in the United States. It discusses the health impact of hazardous chemicals and the environmental regulatory failures within the U.S. to protect the public. It also reports on international chemical management initiatives and key elements of chemical policy reform that can guide the U.S. regulatory, market-based, and institutional-based approaches to a comprehensive, chemical policy reform. The role of nursing in advocating for these reforms will be presented.
Survey of Advanced Practice Registered Nurses Disciplinary Action
Authors: Hudspeth Randall
Published: March 2022

The nursing profession continues to struggle to find the most appropriate approach to credentialing Advanced Practice Registered Nurses (APRNs). One early step in addressing this struggle is determining the incidence of APRN disciplinary actions by boards of nursing. This article presents data from 2003 and 2004 describing the incidence of APRN disciplinary actions by United States boards of nursing. Fifty-one boards of nursing, all members of the National Council of State Boards of Nursing, were asked to report the numbers of APRN discipline cases for 2003 and 2004 which had been resolved, using a tool that differentiated disciplinary cases into four data categories: chemical impairment, exceeding scope of practice, unprofessional conduct, and safety or abuse of patients. Thirty-eight (74.5%) of 51 boards of nursing reported discipline data for a total of 125,882 APRNs showing 688 disciplinary actions were taken during 2003 and 2004. This indicates that APRNs experience a low incidence of discipline related to chemical impairment, exceeding scope of practice, unprofessional conduct, and safety or abuse of patients.
Difficult Professional Choices: Deciding Between the PhD and the DNP in Nursing
Authors: Loomis Jo , Willard Barbara , Cohen Jayne
Published: March 2022

Although the PhD has been the traditional doctoral degree in nursing, nurses now have a choice between that degree and the Doctor of Nursing Practice (DNP) degree. An Internet-based exploratory survey of DNP students (n= 69) investigated the motivation of nurses to pursue doctoral education, factors that influenced the decision between the two degrees, rationale for choosing the DNP program, and career plans after graduation. A majority reported considering the PhD but decided the DNP would be more appropriate for their professional and personal goals. Nursing education was ranked as an important career intention for 55% of respondents, dispelling the concern that the DNP will increase the shortage of nursing faculty. The results indicate that the DNP degree is a desirable option for clinically oriented nurses considering doctoral education and provides nurses with a choice of educational pathways for their professional careers.
Les conséquences distributives des politiques climatiques : retour sur 30 ans de (non-)débat en Allemagne
Authors: Pottier Antonin
Published: March 2022

L’article étudie trois politiques environnementales débattues en Allemagne dans les trente dernières années et qui s’inscrivent dans une perspective de tarification du carbone : la réforme écologique des impôts (ökologische Steuerreform) dans les années 1990, la contribution climatique (Klimaschutzbeitrag) en 2015, le prix du CO 2 (CO 2 Preis) en 2019. Il s’intéresse en particulier aux conséquences distributives de ces politiques, et à quel point les acteurs, dans leurs discours et dans leurs choix, y ont été attentifs. Il montre que leurs conséquences différenciées, et potentiellement injustes, sur les différentes catégories de ménages ne sont jamais devenues un point central du débat public, contrairement aux conséquences sur la compétitivité de l’industrie allemande.
La politique allemande de l’aide climatique
Authors: Ledger Ellen , Klöck Carola
Published: March 2022

Le financement climatique – le soutien financier des pays développés aux pays en développement pour l’atténuation et l’adaptation au changement climatique – représente un pilier clé des négociations climatiques et de la justice climatique internationale. Alors que les accords climatiques contiennent des promesses de financement climatique, la mise en application de ces promesses ainsi que la contribution réelle des pratiques de soutien à la justice climatique, sont souvent remises en question. Nous examinons ici l’aide climatique de l’Allemagne, un des principaux acteurs du financement climatique, par le prisme de la justice climatique. Grâce aux données de l’Organisation de Coopération et de Développement Économiques (OCDE), nous analysons l’aide allemande au développement pour la période 2009-2019, en nous intéressant surtout à trois éléments de la justice climatique : l’importance accordée à l’adaptation, la prise en compte de la vulnérabilité climatique, et la question de l’additionnalité. Notre analyse montre que certains aspects de la justice climatique semblent être pris en compte par l’Allemagne dans sa politique de coopération climatique mais qu’il reste des points à améliorer pour rendre son soutien climatique aux pays du Sud plus juste, notamment en renforçant son action sur les Pays les Moins Avancés (PMA) et les Petits États Insulaires en voie de Développement (PEID), et en développant davantage ses programmes de subventions.
Sciences interdisciplinaires et politique du climat
Authors: Niewöhner Jörg , Delau-Wendt Maïté , Windels Loïc
Published: March 2022

Dans cet article, je m’intéresse à la relation qu’une recherche interdisciplinaire sur les conséquences du changement climatique (ou « impacts climatiques ») entretient avec la politique du climat, en particulier en Allemagne. J’esquisserai d’abord le style de pensée dominant dans ce champ de recherche et montrerai comment l’accent mis sur la modélisation rend invisibles certaines différences (sociales) significatives. Sur cette base, et en prenant l’exemple allemand des comités d’experts, j’examinerai la manière dont l’action politique en contexte d’incertitude fait naître entre la science et la politique une relation qui conduit à un rétrécissement – toujours aussi d’ordre disciplinaire – de la pratique scientifique et à une dépolitisation du discours politique. J’opposerai à cette évolution une recherche sur les impacts climatiques qui soit publique, assume sa dimension politique, et s’engage avec tous ses modèles dans un processus de problématisation, dont l’objectif est la recherche d’un nouvel ordre moral qui respecte les limites planétaires.
Scientists for Future et la consultation scientifique dans le champ politique
Authors: Hagedorn Gregor , von Elverfeldt Kirsten , Windels Loïc
Published: March 2022

À l’heure de la crise du climat et de la biodiversité, les relations entre la science, la société et la politique font à nouveau l’objet d’intenses débats. En s’appuyant sur l’exemple du mouvement « Scientists for Future » (S4F), qui a vu le jour en 2019 en Allemagne, en Autriche et en Suisse, cet article met en lumière les options dont disposent les scientifiques pour contribuer, avec de nombreux autres acteurs, à une société durable. Plus précisément, nous réfléchissons aux problèmes et aux opportunités d’une communication scientifique personnelle axée sur le dialogue et menée par des scientifiques engagés sur le plan social et politique. Nous argumentons que la consultation dans le champ politique et la communication scientifique ont besoin, pour parvenir à des connaissances susceptibles de changer le cours des choses, de l’engagement personnel des scientifiques. Dans un dialogue respectueux, les scientifiques, les citoyen·ne·s et les décideur·euse·s peuvent développer ensemble des recommandations d’action qui mènent à des solutions politiques. Les scientifiques ne peuvent pas se tenir à l’écart des enjeux politiques sur les questions existentielles de la société : qu’ils se taisent ou qu’ils parlent, les deux sont politiques. Mais il est essentiel que dans cette activité politique de conseil, leur engagement au nom de certaines valeurs et leur expertise scientifique fassent l’objet d’une communication responsable, transparente et réfléchie.
De l’éducatif à l’injonction au travail. Place et fonction de la relation dans l’accompagnement socioprofessionnel
Authors: Courty Caroline
Published: March 2022

L’implication des politiques publiques dans le travail social en a modifié la séman-tique, les attendus et les pratiques. La mise en œuvre du revenu de solidarité active a renforcé la place de la commande politique, ramenant la notion de contrepartie à une somme d’injonctions faites aux allocataires et aux professionnels. Face à la perte de sens que peuvent générer l’écart entre le prescrit et le réel et le dévoiement des valeurs qu’il porte, les professionnels s’attachent à établir une relation de confiance et de qualité avec les allocataires.