bluuebunny/crossref_metadata_2025 huggingface dataset:
Byzantine Recensions of Greek Mathematical and Astronomical Texts: A Survey
Authors: Acerbi Fabio
Published: December 2022

Este artículo contiene una panorámica que se prentende completa de las recensiones bizantinas de textos matemáticos y astronómicos griegos junto con un esbozo de sus rasgos estilísticos principales. Se proporcionan y discuten listas de tales recensiones organizadas según dos criterios: el manuscrito que contiene la revisión y la obra revisada. Se presenta brevemente a los estudiosos bizantinos que pueden ser asociados con cierta probabilidad a alguna de estas recensiones. Un apéndice final ofrece un análisis completo del modo en que un teorema específico fue modificado por cierto número de revisores. El artículo incluye asimismo discusiones amplias de las dos enciclopedias matemáticas principales reunidas durante la época paleóloga.
Factors Affecting Nurse Performance at Service Technical Implementation Unit Teluk Dalam Public Health Center, South Nias Regency
Authors: Ginting Hesron Ariamito , Efendy Ismail , Nur’aini Nur’aini
Published: December 2022

Motivation is the driving force for nurses to try to achieve maximum work performance in accordance with the work targets achieved. This study aims to analyze the factors that influence the performance of nurses in the UPTD of Teluk Dalam Public Health Center, South Nias Regency. This research was a quantitative study with a research design using the Analytical Survey method with a Cross Sectional approach. The research was conducted at the UPTD of the Teluk Dalam Public Health Center, South Nias Regency, from July to August of 202. The number of samples was 70 nurses who were obtained by total sampling. The data in this study include primary data, secondary data and tertiary data. Data analysis was performed using univariate analysis test, bivariate analysis using Chi-square test and multivariate using logistic regression test. The results showed that that there is an effect of responsibility, recognition of work results, incentives, work procedures, opportunities to continue education  on the performance of nurses in the UPTD of Teluk Dalam Public Health Center, South Nias Regency. The results of multivariate analysis show that the most dominant variable influencing is the responsibility variable. Based on the results of this study, it is recommended that the results of this study become input for the management of the Teluk Dalam Public Health Center in South Nias Regency, to carry out continuous guidance to all nurses so that they are able to be responsible for every task assigned by the leadership.
Kritik der objektiven Zurechnung
Authors: Leu Nicolas
Published: December 2022

Im deutschen Schrifttum hat sich die Lehre der objektiven Zurechnung längst als herrschende Meinung durchgesetzt. In der Schweiz hat sie Eingang in die Literatur gefunden und ist bereits in die Rechtsprechung des Bundesgerichts zum Fahrlässigkeitsdelikt eingeflossen. Kritische Stimmen weisen jedoch darauf hin, dass der Diskussionsstand durch eine Vielzahl verschiedener, teilweise nur marginal abweichender Lösungsansätzen geprägt sei. Ein Blick in die Literatur zeigt tatsächlich, dass viele wesentliche Fragen, wie etwa die Existenzberechtigung einzelner Zurechnungsgesichtspunkte, auch heute noch umstritten sind. In der vorliegenden Dissertation unterzieht Nicolas Leu die objektive Zurechnung daher einer umfassenden und kritischen Überprüfung, die auch das Straftatsystem mitberücksichtigt, in das die objektive Zurechnung eingebettet ist.
FAKTOR-FAKTOR SOSIAL EKONOMI YANG MEMPENGARUHI KESEMPATAN KERJA DAN PRODUKTIFITAS PETANI TOMAT SAYUR DI DESA PENGALANGAN, KECAMATAN MENGANTI, KABUPATEN GRESIK
Authors: Administrator Administrator , Suryanto Twin , Syahrial Ramon , Kurniasari Dwiyana Anela
Published: December 2022

Penelitian ini bertujuan untuk (1) Mengetahui berapa banyak peluang kerja yang bisa diciptakan dengan menanam sayuran tomat sayur di Desa Pengalangan. (2) Mengetahui pengaruh dampak luas lahan, jumlah bahan baku dan pola budidaya terhadap kesempatan kerja bagi petani tomat sayur di Desa Pengalangan. (3) Mengetahui tentang dampak faktor sosial ekonomi (tingkat pendidikan, pengalaman pertanian, kosmopolitanisme, jumlah keluarga dan luas lahan) terhadap produktivitas petani tomat sayur di Desa Pengalangan. Penelitian ini dilakukan di Desa Pengalangan, Kecamatan Menganti, Kabupaten Gresik. Penentuan daerah penelitian dilakukan secara purposive. Sampel untuk penelitian ini adalah petani yang menanam tomat sayur. Pengambilan sampel dilakukan dengan cara simple random sampling. Data yang digunakan adalah data primer dan data sekunder. Hasil pertama dalam penelitian ini adalah bahwa jumlah kesempatan kerja yang diciptakan dengan menanam tomat sayur bervariasi dari lahan sampel ke lahan sampel, dari lahan sampel terendah sebesar 15,4 HKP/tahun hingga 315,3 HKP/tahun. Faktor-faktor seperti luas lahan, pola budidaya dan jumlah bahan baku juga berpengaruh signifikan terhadap kesempatan kerja petani tomat sayur. Pengaruh faktor sosial ekonomi (tingkat pendidikan, pengalaman bertani, kosmopolitan, jumlah keluarga, luas lahan) sangat berpengaruh terhadap produktivitas usahatani tomat sayur. Kata kunci: Kesejahteraan, petani tomat sayur, produktifitas
Strategi Peningkatan Produksi UKM Di Sidoarjo Dengan Mesin Pembuat Dodol Multifungsi Kapasitas 5 Kg
Authors: Alparazi Reko , Riyadi Slamet , Siswadi Siswadi
Published: December 2022

Dodol adalah salah satu makanan khas indonesia yang sulit dalam pembuatannya karena diperlukan waktu yang cukup lama dan energi yang besar untuk mengaduk adonan hingga mempunyai kekentalan tertentu. Selain itu, kecepatan pengaduk adonan dodol diusahakan konstan agar menghasilkan dodol berkualitas baik dengan tingkat kematangan merata. Sebagai solusi, prinsip kerja yang dulu alat pengaduknya di gunakan secara manual tetapi sekarang menjadi otomatis dengan di tambahi motor listrik sebagai motor penggerak. Selain itu alat pengaduk jenang otomatis ini juga bisa menghasilkan suatu tingkat kematangan yang sempurna, karena dengan motor listrik tersebut kita juga menghitung daya yang dibutuhkan pada suatu mesin tersebut, supaya bisa mendapatkan kematangan yang sempurna dan merata.
Pemanfaatan Teknologi Tepat Guna Mesin Abon Kapasitas 25 Kg/ Jam Untuk Peningkatan Produksi UKM Di Sidoarjo
Authors: Siswanto Heru , Riyadi Slamet , Muhandhis Isnaini
Published: December 2022

Penulisan tugas akhir ini bertujuan untuk menghasilkan mesin pembuat abon ikan secara otomatis yang dapat memudahkan dalam proses produksi. Yang sebelumnya secara manual dan menguras tenaga pada satu kali produksi, sehingga alat ini diciptakan dari penggabungan tiga fungsi alat menjadi suatu mesin pembuat abon ikan. Mesin pemisah daging dan tulang ikan, tungku pemasakan dan mesin pengering abon/spinner, yang dapat di kontrol secara elektrik tanpa mengeluarkan banyak tenaga dalam proses produksi yang lebih higienis dan efisien waktu yang lebih baik dalam satu kali proses produksi. Mesin ini bekerja memanfaatkan energi dari motor listrik ¾ Hp sebagai sumber penggerak mesin pemisah daging dengan putaran 2840 rpm dan motor ½ Hp dengan putaran 2840 rpm dan mempunyai kapasitas produksi 10 kg/20 menit, pully dan vanbelt sebagai penerus daya ke masing – masing komponen, kompor yang di kontrol secara elektrik, dan pengering abon yang di kontrol sistem elektrik.
Pemberdayaan Mesin Teknologi Tepat Guna Pembuat Dan Pengering Mie Pipih Berkapasitas 5kg/Jam Untuk Peningkatan Produksi UKM Di Gresik
Authors: Kusumo Sri Herlambang Haryo , Siswadi Siswadi , Setyono Gatot
Published: December 2022

Pada jaman sekarang teknologi semakin berkembang, seperti halnya di bidang industri makanan. Dimana banyak terciptanya mesin – mesin pengolah makanan secara otomatis. Seperti pada Mesin Pembuat dan Pembakar Sate Kapasitas 25 Kg/ Jam, mesin ini dilengkapi dengan fitur teknologi baru yang sudah tidak menggunakan arang untuk proses pembakaran sate. Tetapi, menggunakan pemanas infrared hd 262 yang berbahan bakar gas lpg. Pemanas infrared hd 262 ini dapat dikontrol suhu nya melalui kontrol digital yang dihubungkan dengan beberapa komponen infrared hd 262 lainnya. Suhu yang dihasikan pemanas infrared hd 262 ini lebih maksimal untuk makanan yang proses pensajiannya melalui pemanggangan, seperti hal nya dengan sate. Dan mesin ini dikontrol dengan motor oriental dan conveyor rantai. Yang dimana putaran dapat diatur sesuai dengan tebal daging dan kebutuhan.
Mengembangkan Partisipasi Masyarakat Dusun Nyamplung Kecamatan Candi Kabupaten Sidoarjo Untuk Meningkatkan Kualitas Hidup
Authors: Oktavia Lily , Mukhlis Muhammad , Nur laili Alifah , Sufi Oktaviya Ayu , Taqwanur Taqwanur
Published: December 2022

Salah satu tugas penting perguruan tinggi adalah melakukan kegiatan pengabdian kepada masyarakat. Salah satu program kerja dalam pengabdian kepada masyarakat adalah kuliah kerja nyata (KKN) yang dilakukan oleh mahasiswa dengan bimbingan dosennya. Hal tersebut dilakukan untuk membantu pemerintah dalam meningkatkan kualitas hidup masyarakat. Mahasiswa dan dosen Universitas Nahdlatul Ulama Sidoarjo mempunyai peranan yang sangat penting dalam melaksanakan hal ini dengan melakukan sharing knowledge kepada masyarakat dan melakukan penerapan bersama-sama warga Dusun Nyamplung Kecamatan Candi Kabupaten Sidoarjo. Program kegiatan dibuat setelah dilakukan Brainstorming (tukar pendapat) antara tokoh masyarakat, aparat dan Tim Universitas Nahdlatul Ulama Sidoarjo yang disesuaikan dengan kondisi yang terdapat di daerah tersebut dan bertujuan untuk meningkatkan kualitas hidup masyarakat Dusun Nyamplung dengan mengembangkan partisipasi masyarakat dalam menjalankan program. Program kegiatan tersebut meliputi program penghijauan dan bimbingan pelaku UMKM – Keripik Tempe. Kegiatan diawali dengan sosialisasi mengenai program kegiatan lalu dilanjutkan dengan membuat materi dan memberi penyuluhan serta pendampingan di lapangan. Program kegiatan pengabdian kepada masyarakat berjalan dengan sukses karena partisipasi masyarakatnya yang besar dalam mensukseskan kegiatan ini dan terjadinya kolaborasi yang sangat baik antara masyarakat, tokoh masyarakat, aparat desa dan akademisi dalam menjalankan program yang telah dirancang tersebut. Hal ini berdampak pada pada kualitas hidup masyarakat menjadi baik karena lingkungan menjadi lebih bersih, asri, dan sehat serta usaha UMKM menjadi lebih baik.
Implementasi Minyak Wijen Sebagai Bahan Bakar Alternatif Untuk Kendaraan Matic Terhadap Pelaku Bengkel Di Sambi Kerep Surabaya
Authors: Setyono Gatot , Kholili Navik , Khusna Dwi
Published: December 2022

Biofuels include energy-enriched chemicals produced directly through biological processes or derived from the chemical conversion of the biomass of previously living organisms. Biofuels can be classified into two categories: primary and secondary biofuels. The main biofuels are produced directly from burning woody plant material or cellulose and dry animal dung. Secondary biofuels can be classified into three generations, and each is produced indirectly from plant and animal materials. The first-generation biofuel is ethanol derived from starch-rich food crops or biodiesel, extracted from animal fat wastes such as cooking oil. The second generation is bioethanol derived from non-food cellulosic biomass and biodiesel derived from oil-rich plant seeds such as soybean or jatropha. The third generation is a biofuel produced from cyanobacteria, microalgae, and other microbes, which is the most promising approach to meet global energy demand. This community service aims to explain innovation and provide knowledge to technology players, namely technicians, operators, supervisors, and workshop supervisors, about the use of alternative fuels of sesame oil for small-capacity automatic gasoline engines. The counseling results show that the performance and exhaust gas results are optimal so that the technology actors know the quality and quantity of the alternative energy.
Increasing Environmental Awareness Through Waste Bank And Technology Wastewater Treatment Plant (WWTP) Osowilangon Benowo Tambak Surabaya
Authors: Abdullah M. Hasan , Subaderi Subaderi , Gemala Dewi Fitriya
Published: December 2022

A healthy living environment is a necessity for the community. However, public awareness of these needs is not in accordance with reality. The problem of waste and household waste water sanitation is an unresolved problem. The service program through Real Work Lectures (KKN) was carried out in RW 04, Tambak Osowilangon village. This activity was carried out by providing information on the procedures for establishing a waste bank and making healthy and inexpensive WWTP technology. The form of this service program is the growth of public awareness to maintain personal and environmental health. The community can manage waste in a modern way through a waste bank and have an WWTP that is safe for the environment.
Penerapan Mesin Teknologi Tepat Guna Penggiling Bumbu Pecel Kapasitas 5 Kg/Jam Bagi UMKM Sambi Kerep Surabaya
Authors: Siswadi Siswadi , Riyadi Slamet , Nugroho Wahyu
Published: December 2022

Indonesia is a tropical country with a very strategic geographical location. Therefore, Indonesia has a variety of delicious culinary delights to serve. Pecel is a culinary dish that has a long history in Indonesian history. Pecel is a favorite food of the Indonesian people, so the number of pieces traders is vast in several areas today. It is making relatively traditional peace seasoning that has inspired researchers to produce appropriate technology products for pecel grinders with a capacity of 5 kg/hour with an electric power of 0.2 kW, which is needed as big as for SMEs in the Sambi Keep area of Surabaya. This TTG machine can increase the amount of pecel seasoning production capacity.
Perancangan Sistem Ujian Online Pada Rumah Pintar Bahasa Inggris Di Kampung Semanggi
Authors: Rahman Taufik Nur , Rofiah Ika Aliyatur R. , Dewanto Dewanto , Setyawan Bagus , Prasetio Vio Jhondan , Sari Mamik Usniyah , Muhandhis Isnaini
Published: December 2022

Kampung Semanggi has an English Smart House that accommodates school-age students. This smart house provides English learning facilities. Based on the results of observations and interviews with the manager, they want a system to be made for online exam activities. This system is not only a necessity during a pandemic, but becomes a breakthrough learning method in the future. Based on this background, we held a service program for designing an online exam system for the English Smart House in Semanggi Village. System development is carried out with the waterfall stage. We use CodeIgniter framework, PHP language and MySQL database in system development. The results of using the online exam system, the exam process becomes easier, faster and more practical. This system helps teachers and students for the efficiency of the exam process
Standar Pelayanan Angkutan Penyeberangan Tanjung Selor – Tarakan
Authors: Suryani Suryani , Muazansyah Imam
Published: December 2022

The movement movement of the people of Tanjung Selor and Tarakan is the availability of the role of the Tanjung Selor - Tarakan crossing transportation as a driver of economic growth. It is expected that the smooth movement of passengers and goods can take place effectively and efficiently. The problem in this research is how the standard of water transportation service crossing passengers to Tanjung Selor - Tarakan in Bulungan Regency and what are the supporting factors and obstacles to the standard of water transportation service to Tanjung Selor - Tarakan. The expected results with this research. The port and the Transportation Agency of the Bulungan Regency have attempted members crossing passenger fish services as well as possible. The absence of a service SOP at the port as a standard service standard, this also makes it difficult for the Transportation Agency of the Bulungan Regency to conduct an assessment of the performance of the officers and to determine the priority of improvement. The obstacles are the lack of government officials who provide services at the port, facilities and infrastructure, weather conditions of the regional financial budget
Pengembangan Sistem Kelistrikan Motor Brushless Direct Current Speed Uwp V2.2 Kapasitas 2000 Watt
Authors: Purnama Robertus Bayu , Pangestu Moh Aji Surya , Pamungkas Achmad Aji , Bukhori Muhammad Rizaldi , Riyadi Slamet
Published: December 2022

This final project aims to realize an environmentally friendly and fuel-efficient vehicle. The increasing need for fuel oil causes several obstacles to the use of oil; for that, one way to overcome the limitations and dependence on fuel is the use of vehicles with electric energy. One solution is to use electrical energy as a source of electrical energy in transportation such as electric cars, electric motorcycles, electric trains, and many others. The electrical system has an important role in the comfort and safety of the driver of the DC motor, lithium battery, and controller as the main components. In finding the maximum load for the rider on the bicycle, 250 kg is obtained. Electric bicycles can go up to a maximum speed of 90 km/h. Furthermore, cover the maximum distance with a full battery charge of 40 km. The 72V-30Ah battery can safely drive an electric motor powered by a 2000 watt motor and a rotational speed of 1000 rpm.
Rancang Bangun Ulang Motor Listrik Berbasis Android Dengan Sistem Motor Brushless Direct Current (BLDC) 3 Phase Kapasitas 1000 Watt
Authors: Prasetyo Yudha Mahendra , Budiarto Sigit , Perdana Mahendra Putra , Siswadi Siswadi
Published: December 2022

Electric vehicles use an electric motor as a driving force where it functions as a converter of electrical energy stored in the battery into mechanical energy to turn the wheels of the vehicle. Electric motors can reduce fuel consumption and air pollution produced by motorized vehicles, so electric vehicles are one of the transportation modes they can use. In this research, the design of a BrushLess Direct Current (BLDC) motor as a motorcycle propulsion was carried out. The BLDC motor has the main components, namely the stator and rotor. This electric motor designed uses a BLDC type E-BIKE with specifications for 1000 Watt power and an input voltage frequency of 60Hz, and a rotating speed of 500Rpm with a 3.75V-25Ah BMS battery in 16 series to 60V-25Ah. This E-BIKE type BLDC electric motorcycle model can be adapted to the shape of a motorcycle drum with a wheel diameter of 17 inches.
Rancang Bangun Rombong Listrik Dengan Menggunakan Pembangkit Listrik Tenaga Surya (PLTS) Kapasitas 200 Watt
Authors: Dewananta Alvin Rivada , Rahmadhani Rian Agung , Fantoja Dimas Maulana , Muharom Muharom , Setyono Gatot
Published: December 2022

The solar energy that reaches the earth in one hour is sufficient to meet the energy needs of all humans on the earth's surface in one year, reason enough to spur the maximization of solar energy like renewable energy, especially by converting it into electricity by cell devices/solar panels. To get the maximum output of solar cell panel energy by optimizing the direction of the solar cell panels to the sun. The solution is to design a tracking system that adjusts the position of the solar cell panels automatically following the sun based on Arduino Uno R3. The method used is to compare the two solar cell panels using the Arduino Uno R3. tracking system and solar cell panels without a tracking system. From the two measurement results in the morning to afternoon, it was found that the panel using the tracking system had a total power output of 104.3364 Watt and the panel without a tracking system had a total power output of 43.05094 Watt, so from the results of the most optimal measurement, the panel using the tracking system. It can be seen in measurements from 09.30 WIB to 16.30 WIB solar cell panels using a tracking system produce greater energy output than solar cell panels without a tracking system, an increase in the power output compared to panels.
Pengaruh Model Pembelajaran Di Luar Kelas Terhadap Hasil Belajar Siswa Kelas III Dalam Menulis Laporan Di UPT SDN 177 Gresik
Authors: Muniroh Lu'luil , Ghufron Syamsul , Thamrin Hidayat Muhammad , Kasiyun Suharmono
Published: December 2022

This research is focused on the problem of student learning outcomes of class III UPT SDN 177 Gresik in writing reports that are classified as low by applying the learning model outside the classroom. This research is a quantitative research with a one-group pretest-posttest design method. The population in this study consisted of 27 students, namely 9 males and 18 females. The sample of this study used a full sampling technique. The results obtained are based on the students’ increasing average scores and the results of the paired sample t-test. The results of this study proved to increase from the average value of 58,89 students increased to 83,52 and the paired sample t-test test that the value of tcount is greater than ttable (th = 4,825 > tt=1,7033), in other words H1 is accepted and H0 is rejected.
Perancangan Sistem Deteksi Dan Pemadam Kebakaran Berbasis Arduino Dengan Metode QFD
Authors: Ansori Ismantoko Mohammad Fahrul , Kurniawan Dani , Wahju Rijanto Ong Andre , Abdullah M. Hasan , Subaderi Subaderi , Hariyanto Krisnadhi
Published: December 2022

Dengan banyaknya kasus kebakaran di lingkungan pemukiman padat penduduk di Surabaya, peneliti ingin mencegah dan mengurangi resiko kebakaran dengan mengembangkan sistem dan alat pemadam kebakaran skala rumahan. Sistem dan alat pemadam kebakaran ini dikembangkan dengan metode Quality Function Deployment (QFD). Sistem ini menggunakan mikrokontroler Arduino Uno yang terkoneksi dengan Android melalui bluetooth. Dengan tahapan penelitian menyusun pernyataan misi penelitian, mengumpulkan studi literatur dan observasi lapangan. Melakukan survey dengan menyebar kuisioner kepada 80 responden. Menganalisis Validitas dan Reliabilitas data hasil kuisioner. Kemudian menyusun matriks kebutuhan dan HOQ untuk menentukan target pengembangan produk. Dilanjutkan dengan pembuatan dan pemilihan desain prototipe hingga proses pembuatan prototipe dari desain terpilih. Tahap akhir penelitian dilakukan pengujian fisik, fungsi, dan analisis ekonomi prototipe yang dihasilkan.
Perancangan Proses Kondensasi Pada Pengolahan Limbah Plastik Menjadi Bahan Bakar Minyak Menggunakan Sistem Pirolisis Dengan Kapasitas 10 Liter
Authors: Syahrul Gunawan Mochamad , Muharom Muharom , Abdullah M. Hasan , Gemala Dewi Fitriya , Jaya Suwondo Ampar , Purnamayudhia Onny
Published: December 2022

Sampah menjadi permasalahan yang sering dibahas belakangan ini, jumlahnya yang semakin hari kian meningkat sehingga apabila tidak ditangani dengan baik dan benar mengakibatkan permasalahan yang lebih besar. Sampah plastik jenis sampah yang perlu mendapatkan penanganan khusus, karena proses penguraian dibutuhkan waktu yang sangat lama. Salah satu cara mengolah sampah plastik yaitu dengan mendaur ulangnya. Salah satu cara mendaur ulang sampah plastik dengan mengolahnya menjadi bahan bakar minyak, yang biasa disebut pirolisis, adalah proses mengubah sampah plastik menjadi minyak dengan destilasi kering pengubahan uap proses hasil pembakaran di kondensor pada suhu tertentu. Perancangan proses kondensasi yang baik dan benar sangat diperlukan untuk menghasilkan minyak yang efisien. Sehingga diperlukan penelitian tentang perancangan proses kondensasi yang maksimal.
SELF EFFICACY, PENYESUAIAN DIRI PADA MAHASISWA NUSA TENGGARA TIMUR DI SURABAYA
Authors: Sulistyoningrum Endah , Kusnadi Starry Kireida
Published: December 2022

This research aims to find out the relationship of Self efficacy with self-adjustment in new students who feel able to overcome challenges in college will engage more deeply in the learning process as well as various experiences that exist in college, so that students with high self efficacy will face tasks, problems, and activities vigorously and not easily give up, can motivate themselves cognitively to act more consistently and directedly. This research was conducted on new students from NTT in UWP Surabaya semesters 1 and 2 with the number of research subjects 50 students, consisting of 18 male and 32 female students. Data collection technique using simple random sampling Data collection tool in the form of self efficacy questionnaire consisting of 27 items, while self adjustment questionnaire consisting of 53 items. The data analysis was conducted with pearson product moment correlation test statistical technique with the help of Windows Series 20 SPSS (Statistical Package for Social Science) program. From the analysis of research data obtained correlation value between self efficacy with self adjustment of 0.279 with p of 0.827. This suggests that there is a significant correlation between self efficacy and self-adjustment. This means that the higher the self efficacy, the higher the self-adjustment of new students from NTT at UWP Surabaya and vice versa the lower the self efficacy, the lower the adjustment of new students from NTT in UWP Surabaya
A Mechanistic Study on the Formation of Acetone (CH3COCH3), Propanal (CH3CH2CHO), Propylene Oxide (c-CH3CHOCH2) along with Their Propenol Enols (CH3CHCHOH/CH3C(OH)CH2) in Interstellar Analog Ices
Authors: Singh Santosh K. , Fabian Kleimeier N. , Eckhardt André K. , Kaiser Ralf I.
Published: December 2022

Carbonyl-bearing complex organic molecules (COMs) in the interstellar medium (ISM) are of significant importance due to their role as potential precursors to biomolecules. Simple aldehydes and ketones like acetaldehyde, acetone, and propanal have been recognized as fundamental molecular building blocks and tracers of chemical processes involved in the formation of distinct COMs in molecular clouds and star-forming regions. Although previous laboratory simulation experiments and modeling established the potential formation pathways of interstellar acetaldehyde and propanal, the underlying formation routes to the simplest ketone—acetone—in the ISM are still elusive. Herein, we performed a systematic study to unravel the synthesis of acetone, its propanal and propylene oxide isomers, as well as the propenol tautomers in interstellar analog ices composed of methane and acetaldehyde along with isotopic-substitution studies to trace the reaction pathways of the reactive intermediates. Chemical processes in the ices were triggered at 5.0 K upon exposure to proxies of Galactic cosmic rays in the form of energetic electrons. The products were detected isomer-selectively via vacuum ultraviolet (VUV) photoionization reflectron time-of-flight mass spectrometry. In our experiments, the branching ratio of acetone (CH3COCH3):propylene oxide (c-CH3CHOCH2):propanal (CH3CH2CHO) was determined to be (4.82 ± 0.05):(2.86 ± 0.13):1. The radical–radical recombination reaction leading to acetone emerged as the dominant channel. The propenols appeared only at a higher radiation dose via keto–enol tautomerization. The current study provides mechanistic information on the fundamental nonequilibrium pathways that may be responsible for the formation of acetone and its (enol) isomers inside the interstellar icy grains.
Classifying Unidentified X-Ray Sources in the Chandra Source Catalog Using a Multiwavelength Machine-learning Approach
Authors: Yang Hui , Hare Jeremy , Kargaltsev Oleg , Volkov Igor , Chen Steven , Rangelov Blagoy
Published: December 2022

The rapid increase in serendipitous X-ray source detections requires the development of novel approaches to efficiently explore the nature of X-ray sources. If even a fraction of these sources could be reliably classified, it would enable population studies for various astrophysical source types on a much larger scale than currently possible. Classification of large numbers of sources from multiple classes characterized by multiple properties (features) must be done automatically and supervised machine learning (ML) seems to provide the only feasible approach. We perform classification of Chandra Source Catalog version 2.0 (CSCv2) sources to explore the potential of the ML approach and identify various biases, limitations, and bottlenecks that present themselves in these kinds of studies. We establish the framework and present a flexible and expandable Python pipeline, which can be used and improved by others. We also release the training data set of 2941 X-ray sources with confidently established classes. In addition to providing probabilistic classifications of 66,369 CSCv2 sources (21% of the entire CSCv2 catalog), we perform several narrower-focused case studies (high-mass X-ray binary candidates and X-ray sources within the extent of the H.E.S.S. TeV sources) to demonstrate some possible applications of our ML approach. We also discuss future possible modifications of the presented pipeline, which are expected to lead to substantial improvements in classification confidences.
The X–shooter/ALMA Sample of Quasars in the Epoch of Reionization. II. Black Hole Masses, Eddington Ratios, and the Formation of the First Quasars
Authors: Farina Emanuele Paolo , Schindler Jan-Torge , Walter Fabian , Bañados Eduardo , Davies Frederick B. , Decarli Roberto , Eilers Anna-Christina , Fan Xiaohui , Hennawi Joseph F. , Mazzucchelli Chiara , Meyer Romain A. , Trakhtenbrot Benny , Volonteri Marta , Wang Feige , Worseck Gábor , Yang Jinyi , Gutcke Thales A. , Venemans Bram P. , Bosman Sarah E. I. , Costa Tiago , Rosa Gisella De , Drake Alyssa B. , Onoue Masafusa
Published: December 2022

We present measurements of black hole masses and Eddington ratios (λ
Edd) for a sample of 38 bright (M
1450 < −24.4 mag) quasars at 5.8 ≲ z ≲ 7.5, derived from Very Large Telescope/X–shooter near–IR spectroscopy of their broad C iv and Mg ii emission lines. The black hole masses (on average, M
BH ∼ 4.6 × 109
M
⊙) and accretion rates (0.1 ≲ λ
Edd ≲ 1.0) are broadly consistent with that of similarly luminous 0.3 ≲ z ≲ 2.3 quasars, but there is evidence for a mild increase in the Eddington ratio above z ≳ 6. Combined with deep Atacama Large Millimeter/submillimeter Array (ALMA) observations of the [C II] 158 μm line from the host galaxies and VLT/MUSE investigations of the extended Lyα halos, this study provides fundamental clues to models of the formation and growth of the first massive galaxies and black holes. Compared to local scaling relations, z ≳ 5.7 black holes appear to be over-massive relative to their hosts, with accretion properties that do not change with host galaxy morphologies. Assuming that the kinematics of the T ∼ 104 K gas, traced by the extended Lyα halos, are dominated by the gravitational potential of the dark matter halo, we observe a similar relation between black hole mass and circular velocity as reported for z ∼ 0 galaxies. These results paint a picture where the first supermassive black holes reside in massive halos at z ≳ 6 and lead the first stages of galaxy formation by rapidly growing in mass with a duty cycle of order unity. The duty cycle needs to drastically drop toward lower redshifts, while the host galaxies continue forming stars at a rate of hundreds of solar masses per year, sustained by the large reservoirs of cool gas surrounding them.
Luminous Supernovae: Unveiling a Population between Superluminous and Normal Core-collapse Supernovae
Authors: Gomez Sebastian , Berger Edo , Nicholl Matt , Blanchard Peter K. , Hosseinzadeh Griffin
Published: December 2022

Stripped-envelope core-collapse supernovae can be divided into two broad classes: the common Type Ib/c supernovae (SNe Ib/c), powered by the radioactive decay of 56Ni, and the rare superluminous supernovae (SLSNe), most likely powered by the spin-down of a magnetar central engine. Up to now, the intermediate regime between these two populations has remained mostly unexplored. Here, we present a comprehensive study of 40 luminous supernovae (LSNe), SNe with peak magnitudes of M

r
= −19 to −20 mag, bound by SLSNe on the bright end and by SNe Ib/c on the dim end. Spectroscopically, LSNe appear to form a continuum between Type Ic SNe and SLSNe. Given their intermediate nature, we model the light curves of all LSNe using a combined magnetar plus radioactive decay model and find that they are indeed intermediate, not only in terms of their peak luminosity and spectra, but also in their rise times, power sources, and physical parameters. We subclassify LSNe into distinct groups that are either as fast evolving as SNe Ib/c or as slow evolving as SLSNe, and appear to be either radioactively or magnetar powered, respectively. Our findings indicate that LSNe are powered by either an overabundant production of 56Ni or by weak magnetar engines, and may serve as the missing link between the two populations.
Electron Density Variations in the Interstellar Medium and the Average Frequency Profile of a Scintle from Pulsar Scintillation Spectra
Authors: Bartel N. , Burgin M. S. , Fadeev E. N. , Popov M. V. , Ronaghikhameneh N. , Smirnova T. V. , Soglasnov V. A.
Published: December 2022

We observed the scintillation pattern of nine bright pulsars at 324 MHz and three at 1.68 GHz and analyzed the wavenumber spectrum, which is related to electron density variations of the plasma turbulence of the interstellar medium (ISM). For all pulsars the frequency section of the autocorrelation function (ACF) of the dynamic spectra to at least 45% of the maximum corresponds to predictions of scattering theories with a range of power-law exponents of the wavenumber spectrum of 3.56 ≤ α ≤ 3.97 with errors ≤0.05 and a mean with standard deviation of 3.76 ± 0.13. The range includes α = 3.67 for the Kolmogorov spectrum. Similar results, although with larger errors, were found from the Fourier transform of the ACFs down to ∼10−3 of the maximum. No clear case of a distinction between thin-screen and extended-medium scattering models was found. The average frequency profile of the scintles can be characterized for steep wavenumber spectra with α ≲ 4 by a cusp with a somewhat rounded peak. For flatter spectra, down to at least α ∼ 3.56 the cusp with its peak becomes more pronounced and its decay steepens. We discuss our findings in the context of the scattering characteristics of the ISM.
Dark Matter–admixed Rotating White Dwarfs as Peculiar Compact Objects
Authors: Chan Ho-Sang , Chu Ming-chung , Leung Shing-Chi
Published: December 2022

Discoveries of anomalous compact objects challenge our understanding of the standard theory of stellar structures and evolution, so they serve as an excellent laboratory for searching for new physics. Earlier studies on spherically symmetric dark matter (DM)–admixed compact stars could explain a handful of anomalies. In this paper, we investigate the observational signatures of DM-admixed rotating white dwarfs, and make connections to observed peculiar compact objects. We compute the equilibrium structures of DM-admixed rotating white dwarfs using a self-consistent, two-fluid method, with the DM component being a nonrotating degenerate Fermi gas. We find that admixing DM to rotating white dwarfs could: (1) account for some peculiar white dwarfs that do not follow their usual mass–radius relation; (2) allow stable rapid-rotating white dwarfs that are free from thermonuclear runaway to exist, which could explain some soft gamma-ray repeaters/anomalous X-ray pulsars; and (3) produce universal I (moment of inertia)–Love (tidal Love number)–Q (quadrupole moment) relations that span bands above those without DM admixture, thus providing an indirect way of searching for DM in white dwarfs through gravitational-wave detection. To conclude, DM-admixed rotating white dwarfs can account for some peculiar compact objects. Our results suggest a systematic approach to accounting for the unusual compact objects that upcoming surveys could discover.
Numerical Simulations of Oscillations in Solar Corona Excited by Vortex Shedding
Authors: Jelínek Petr , Belov Sofya , Karlický Marian
Published: December 2022

We study transverse oscillations of plasma structures in the solar corona excited by vortex shedding solving the full set of the 3D ideal time-dependent magnetohydrodynamic equations. To present how the creation of vortices and excited oscillations depend on the initial flow speed and various values of the magnetic field, we performed a parametric study for two cases, an interaction of a steady flow with a rigid and spatially fixed cylindrical obstacle, and with a cylinder fixed at the boundaries. We show that generated vortices can excite oscillations, e.g., transverse (kink), in the solar corona, for example in coronal loops, filaments, flux ropes, or similar magnetic structures. It has been found that the oscillation period is close to the theoretically predicted value. Moreover, we study the dependence of the Strouhal number with respect to the magnetic field under the conditions of the solar atmosphere.
Psychological Well-being Structure of Indonesian Soldiers: Systematic Review
Authors: Sulistiyani Sulistiyani , Andriany Megah , Dewi Nur Setiawati
Published: December 2022

BACKGROUND. Work-related stress can increase maladaptive coping behavior, like smoking behavior, in Indonesian soldiers. Pressure to achieve maximum performance might affect psychological condition of soldiers at work place. Most research results discuss negative psychological well-being, while positive well-being of Indonesian soldiers is still rarely discussed. OBJECTIVE. to elaborate structure of psychological well-being of Indonesian soldiers regarding their coping ability during military duty. METHOD. Research method used in this research is systematic review. Sources of database are retrieved from Google Scholar, Medline, PubMeds, Wiley Library, ScienceDirect, and Emerald with limitation in articles published between 2010 and 2018. Inclusion criteria of scientific articles reviewed are articles about soldiers, who are active-duty and retired, which are written in English and Indonesian. RESULTS. In 11 articles regarding psychological well-being in Indonesian soldiers that can elaborate six structures: autonomy, environmental mastery, personal growth, positive relations with others, purpose in life, and self-acceptance. These six structures of psychological well-being can explain adaptive and maladaptive coping skills in Indonesian soldiers while they do military duty. CONCLUSION. Structure of positive psychological well-being based on evidence in Indonesian soldiers is critically needed during military duty. Improving adaptive coping skill in soldiers might be able to banish negative thoughts in order to maintain their mental health.
Integrative taxonomy of the Lauraceae-feeding species of the genus Stephanitis (Hemiptera, Heteroptera, Tingidae) from Japan
Authors: Souma Jun
Published: December 2022

Stephanitis Stål, 1873 (Hemiptera, Heteroptera, Tingidae, Tinginae, Tingini) is one of the most diverse lace bug genera in East Asia with over 50 species, many of them feeding on Ericaceae and Lauraceae. The Japanese species feeding on Lauraceae have high intraspecific and poor interspecific variation, so identification of some previous distribution records (mainly S. (Norba) aperta Horváth, 1912 and closely related taxa) is doubtful. In the present study, 5,080 specimens of Lauraceae-feeding species of Stephanitis from Japan were identified to species based on morphology, and DNA barcodes of the mitochondrial cytochrome c oxidase subunit (COI) region for 53 of those individuals were also obtained. The combined morphological and molecular evidence dataset showed that 10 species of Stephanitis feed on lauraceous trees in Japan: S. (Stephanitis) ambigua Horváth, 1912, S. (Norba) aperta, S. (N.) exigua Horváth, 1912, S. (N.) hayashiisp. nov., S. (N.) hiurai Takeya, 1963, S. (N.) ishikawaisp. nov., S. (N.) mendica Horváth, 1912, S. (S.) tabidula Horváth, 1912, S. (S.) takeyai Drake & Maa, 1955 and S. (S.) tomokuniisp. nov. Additionally, a new synonymy, S. (S.) fasciicarina Takeya, 1931, syn. nov. with S. (S.) tabidula, is proposed, a key for identifying the 10 species is provided and their distribution ranges and host plant relationships are presented.
Insurance Status and Tumor Necrosis Factor Inhibitor Initiation Among Children With Juvenile Idiopathic Arthritis in the CARRA Registry
Authors: Roberts Jordan E. , Williams Kathryn , Dallas Johnathan , Eckert Mary , Huie Livie , Smitherman Emily , Soulsby William D. , Zhao Yongdong , Son Mary Beth F.
Published: December 2022

Objective

Prompt escalation to tumor necrosis factor inhibitors (TNFis) is recommended for children with juvenile idiopathic arthritis (JIA) and ongoing disease activity despite treatment with conventional disease-modifying antirheumatic drugs (cDMARDs). It is unknown whether these recommendations are equitably followed for children with different insurance types. We assessed the association of insurance coverage on the odds and timing of TNFi use.

Methods

We conducted a retrospective study of children with newly diagnosed JIA in the Childhood Arthritis and Rheumatology Research Alliance (CARRA) Registry. We compared the odds of starting a TNFi in the first year and time from cDMARD to TNFi initiation between those with public and private insurance.

Results

We identified 1086 children with new JIA diagnoses. Publicly insured children had significantly higher active joint counts and parent/patient global assessment scores at the enrollment visit. They were also more likely to have polyarticular arthritis compared to those with private insurance. Odds of any TNFi use in the first year did not differ between publicly and privately insured children. Publicly insured children were escalated from cDMARD to TNFi more quickly than privately insured children.

Conclusion

Children who were publicly insured had more severe disease and polyarticular involvement at registry enrollment compared to those who were privately insured. Whereas overall TNFi use did not differ between children with different insurance types, publicly insured children were escalated more quickly, consistent with their increased disease severity. Further research is needed to determine why insurance coverage type is associated with disease severity, including how other socioeconomic factors affect presentation to care.
Cancer risk in patients with Peutz-Jeghers syndrome in Korea: a retrospective multi-center study
Authors: Kim Su Hwan , Kim Eun Ran , Park Jae Jun , Kim Eun Sun , Goong Hyeon Jeong , Kim Kyeong Ok , Nam Ji Hyung , Park Yehyun , Lee Sang Pyo , Jang Hyun Joo ,   KSGE,   Research Group of Capsule Endoscopy and Artificial Intelligence in Imaging
Published: December 2022

Background/Aims: There have been little research on the cancer risks of patients with Peutz-Jeghers syndrome (PJS) in Korea. We aimed to investigate the clinical features of PJS patients and their cancer incidence rate.Methods: Patients with PJS from nine medical centers were enrolled. In those patients diagnosed with cancer, data obtained included the date of cancer diagnosis, the tumor location, and the cancer stage. The cumulative risks of gastrointestinal cancers and extra-gastrointestinal cancers were calculated using the Kaplan-Meier method.Results: A total of 96 PJS patients were included. The median age at diagnosis of PJS was 23.4 years. Cancer developed in 21 of the 96 patients (21.9%). The age of PJS diagnosis was widely distributed (0.9 to 72.4 years). The most common cancers were gastrointestinal cancer (n = 12) followed by breast cancer (n = 6). The cumulative lifetime cancer risk was calculated to be 62.1% at age 60. The cumulative lifetime gastrointestinal cancer risk was 47.1% at age 70. The cumulative lifetime extra- gastrointestinal cancer risk was 40.3% at age 60.Conclusions: PJS onset may occur at any age and the risks of gastrointestinal and extra-gastrointestinal cancer are high. Thorough surveillance of PJS patients for malignancies is vital.
Rabat smart city, est-elle participative ?
Authors: Mouttaki Adil
Published: December 2022

Cet article entend analyser et discuter l’implication et la réception de la population locale par rapport au projet de smart city adopté par Rabat. Il s’agira en fait de déceler les répercussions de l’usage des Tics sur la gestion des services publics ainsi que la participation civique des résidents. La démarche méthodologique mobilisée est fondée sur une approche d’investigation empirique qui cherche à documenter la question digitale et à la confronter à la réalité de la science et du terrain avec des allers et retours réflexifs vers les enseignements dégagés du terrain de recherche. Le cadre théorique est envisagé via une approche appuyée sur la sociodynamique comme discipline qui tente de concilier les impératifs de l’Institution et les attentes du Corps Social (Van Laethem, 2019). Concernant les résultats, l’article conclut que la capitale n’implique pas concrètement ses habitants en particulier ceux issus des quartiers défavorisés qui, affaiblis par leur manque de maîtrise et d’usage des Tics, restent en marge du processus de définition et d’implémentation du projet digital.
Un exil fort difficile, un retour tant espéré
Authors: Conte Paolo
Published: December 2022

En 1806, les réfugiés napolitains demeurant en France depuis 1799 peuvent finalement rentrer dans leur patrie et soumettent à cette fin au ministère de la Police des demandes concernant les frais de transport. L’article analyse ces dossiers, en enquêtant notamment sur la présence des femmes, lesquelles ont joué un rôle à part entière dans cet exil en ce début de siècle. Elles ont été amenées à agir dans des conditions d’extrême indigence, ce qui les a obligées à faire face à des problèmes nouveaux et à engager des trajectoires professionnelles inattendues.
La migration des « cygnes noirs » : les mobilités professionnelles des danseur·euse·s classiques racisé·e·s entre l’Ile-de-France, l’Angleterre et les États-Unis
Authors: Gourland Natacha
Published: December 2022

À partir d’une recherche doctorale sur les pratiques de danse classique en petite couronne parisienne, l’article interroge le poids des mobilités dans l’insertion professionnelle des danseurs et danseuses entre la France, l’Angleterre et les États-Unis. En mobilisant une approche intersectionnelle, il s’agira de montrer que les possibilités de mobilités des individus reflètent des appartenances nationales et des positions inégales au sein de rapports de pouvoir. Dans un secteur artistique où la blanchité constitue la norme, l’article interroge la tension entre local et global dans les parcours des danseurs et danseuses classiques racisé·e·s qui cherchent à faire leur place dans cet univers.
Les femmes algériennes non migrantes face à l’absence de leur famille à l’étranger : quelle redéfinition dans les rôles et mobilités de ces femmes qui restent ?
Authors: Haziza Lena
Published: December 2022

Cet article interroge une forme de socialité en contexte migratoire : les expériences de l’absence vécue par les femmes qui restent dans le pays que des membres de leur famille ont quitté. Quelle est la portée de la migration chez les personnes non-migrantes ? Tout en se focalisant sur les personnes qui restent, la grille d’analyse de l’absence permet d’appréhender le vécu de l’ensemble des personnes concernées par la migration : qu’elles aient la possibilité de communiquer entre elles, de se déplacer, ou non. Issu d’une recherche exploratoire effectuée en Algérie en 2020, cet article est étayé par les entretiens menés avec des femmes algériennes résidant dans les wilayas d’Alger et de Relizane. Dans un premier temps est étudié la façon dont les rôles sociaux à l’intérieur de la famille se réagencent dans l’absence en fonction des rapports sociaux de genre et d’âge des personnes qui partent et des femmes qui restent. Ensuite, les difficultés dans leurs nouvelles mobilités à l’extérieur induites par l’absence sont abordées.