bluuebunny/crossref_metadata_2025 huggingface dataset:
Soziale Arbeit
Authors: Schilling Johannes , Klus Sebastian
Published: November 2021

Studierende der Sozialen Arbeit finden in diesem Buch einen Leitfaden für ihr Studienfach – von den Anfängen der Armenfürsorge über Theorien und Methoden bis hin zu heutigen Berufsbildern und dem professionellen Selbstverständnis.
Das Buch hilft den Studierenden dabei,
• die Entwicklung des Studienfaches nachzuvollziehen,
• die Ziele, Aufgaben und Methoden des Arbeitsfeldes kennen zu lernen,
• die Berufsfelder in der Sozialen Arbeit zu differenzieren,
• theoretische Modelle zu verstehen.
Didaktische Elemente, Fragen zum Text bzw. zur Prüfungsvorbereitung und Zusammenfassungen erleichtern die Arbeit mit diesem Buch.
Übungsbuch Kosten- und Leistungsrechnung
Authors: Homburg Carsten , Liesenfeld Stefanie , Kübel Julia
Published: November 2021

Übungen mit Lösungen zur Prüfungsvorbereitung
Das Übungsbuch wurde um 20 Aufgaben auf nunmehr 147 Aufgaben mit ausführlichen Lösungen erweitert. Alle Aufgaben sind mit Schwierigkeitsgraden gekennzeichnet. Damit können vor allem diejenigen Themen vertieft und praktisch angewandt werden, die im Bachelor-Studium von Bedeutung sind.
Inhalt und Aufbau des Übungsbuches orientieren sich am Lehrbuch Schildbach / Homburg, Kosten- und Leistungsrechnung:
Teil 1 beschäftigt sich mit den Grundlagen der Kosten- und Leistungsrechnung und verdeutlicht zentrale Begriffe.
Teil 2 behandelt die primär für Dokumentations- und Kontrollaufgaben geeignete Istkosten- und Istleistungsrechnung.
Teil 3 führt in die Plankosten- und Planleistungsrechnung ein.
Das Übungsbuch eignet sich nicht nur für Studenten zur gezielten Prüfungsvorbereitung, sondern gibt auch Praktikern Gelegenheit, ihre Kenntnisse der Kosten- und Leistungsrechnung zu überprüfen und zu ergänzen.
Mathematik für Wirtschaftswissenschaften
Authors: Terveer Ingolf
Published: November 2021

Das Wirtschaftsstudium mit Mathe erfolgreich meistern!
Wer sich für ein Studium der Wirtschaftswissenschaften entscheidet, sollte die Mathematik beherrschen. Die 4. Auflage dieses Buches stellt genau die Begriffe und Methoden der Linearen Algebra und Analysis mehrerer
Variablen dar, die Studierende im Verlauf des Studiums benötigen.
Bei der Vermittlung des Stoffs wird großer Wert auf den Anwendungsbezug gelegt. Pro Kapitel festigen Zusammenfassungen und Aufgaben die Kenntnisse der Studierenden und bereiten ideal auf die Prüfung vor.
Was ist Gesellschaft?
Authors: Schwietring Thomas
Published: November 2021

Die soziologische Sicht auf Gesellschaft lässt viele vertraute Phänomene in einem anderen Licht erscheinen. Neben Neugier, kritischem Blick und Mut zu eigenen Fragen sind hierfür die Kenntnis von soziologischen Methoden, Begriffen und Theorien eine unabdingbare Voraussetzung.
Anschaulich und an konkreten Beispielen führt Thomas Schwietring in das soziologische Denken und in zentrale soziologische Grundbegriffe ein. Er zeigt, welche Argumente und wissenschaftlichen Modelle den Begriffen zugrunde liegen und eröffnet dem Leser ein Verständnis der gesellschaftlichen Zusammenhänge. Dabei bündelt jedes Kapitel die Auswahl an Begriffen mit einer einleitenden Fragestellung und schließt mit einer Zusammenfassung sowie Hinweisen auf weiterführende Literatur.
Marketing-Management
Authors: Sander Matthias
Published: November 2021

In diesem Buch stellt der Autor nicht nur die Grundlagen des Marketings in den Fokus. Er geht zudem im Detail auf das Käuferverhalten sowie die Marktforschung und das Anfertigen von Marktprognosen ein. Darüber hinaus stellt er ausführlich die Teilfunktionen des Marketing-Managements vor – von der strategischen Planung und der Planung des Marketing-Instrumente-Einsatzes über die Implementierung bis hin zum Controlling, der Organisation und dem Human Resource Management im Marketing.
Das Buch zeichnet sich durch eine entscheidungsorientierte Darstellung aus und ist somit im Studium ein hilfreiches Lehrbuch und in der Praxis ein wertvolles Nachschlagewerk. Die Neuauflage wurde komplett überarbeitet und um die Themen Neuromarketing und Yield-Management erweitert.
Personalmanagement
Authors: Nicolai Christiana
Published: November 2021

Unter ökonomischen Gesichtspunkten wird Personal als Leistungsträger interpretiert, dessen Einsatz vor dem Hintergrund hoher Arbeitskosten und eines starken Wettbewerbsdrucks optimal strukturiert werden muss. Gleichzeitig kann ein Unternehmen langfristig nur erfolgreich sein, wenn es den Interessen seiner Mitarbeiterinnen und Mitarbeiter Rechnung trägt und passende Anreize bietet. Der Umgang mit der Ressource Personal nimmt eine immer wichtigere Rolle im Unternehmen ein.
Die siebte Auflage wurde inhaltlich auf den neuesten Stand gebracht. Sie behandelt alle zentralen personalwirtschaftlichen Themen von der Bedarfsermittlung und -beschaffung über Anreiz- und Beurteilungssysteme sowie Personalentwicklung bis zur Personalfreisetzung. Die Personalarbeit wird – unter Einbeziehung neuer Erkenntnisse – praxisnah dargestellt, wobei der Schwerpunkt auf der Analyse und Gestaltung der Aufgabenbereiche liegt.
Didaktik / Methodik Sozialer Arbeit
Authors: Schilling Johannes
Published: November 2021

Dieses Standardwerk führt grundlegend in die Didaktik und Methodik Sozialer Arbeit ein.
Es hilft Studierenden dabei,
• Konzepte für die praktische Arbeit zu entwickeln,
• Lösungen praktischer Aufgaben strukturiert und zielorientiert zu erarbeiten,
• Arbeitsschritte theoretisch begründen zu können,
• die Wirksamkeit der eigenen Arbeit zu überprüfen.
Dieses Arbeitsbuch ist reichhaltig mit didaktischen Elementen ausgestattet. Leser:innen finden Verständnisfragen zum Text, Lernfragen zur Prüfungsvorbereitung, Zusammenfassungen und zahlreiche Info-Kästen, die die Ausführungen auf den Punkt bringen.
utb+: Leser:innen erhalten als digitales Bonusmaterial zusätzlich zum Buch ausführliche Prüfungsfragen mit Antworten und Musterbeispiele, um das erlernte Wissen zu überprüfen und anzuwenden.
Molekularbiologische Methoden 2.0
Authors: Reinard Thomas
Published: November 2021

In den vergangenen Jahren hat sich die Molekularbiologie rasant weiterentwickelt. Technologien wie die Modulare Klonierung, PCR-basierte Klonierungen und das Gibson Assembly sind inzwischen in vielen Laboren als Standard etabliert. Neben den modernen Klonierungsverfahren wurden die die Denkansätze in der modernen Biologie revolutionierende Bioinformatik und die synthetische Biologie aufgenommen. Die zunehmende Bedeutung reicht inzwischen weit in die Gesellschaft hinein, wie die „Omics“-Technologien und die Genom Editierung zeigen, die ebenfalls in diesem Buch behandelt werden.
Die 3. Auflage wurde korrigiert und aktualisiert und enthält viele hilfreiche Tipps und Tricks, welche die Fehlersuche im Labor erleichtern können. Concept-Maps visualisieren Zusammenhänge zwischen den vorgestellten Methoden. Zahlreiche Abbildungen und Tabellen veranschaulichen komplexe Sachverhalte, „Gut zu wissen“-Boxen liefern Hintergrundinformationen, „Tipp“-Boxen geben wertvolle Hinweise für die praktische Arbeit und Protokolle besonders wichtiger Verfahren erleichtern das Verständnis.
Ideal für Studium und Praxis!
Application of preliminary low-temperature heating for cold forming of complex parts on cold former
Authors: Lavrinenko V.Yu. , Lavrinenko Yu.A. , Fayruzov R.S. , Ayrapetyan A.S. , Kirsanov A.S.
Published: November 2021

The results of experimental studies of flow curves of 32CrB4, 20G2R and 1.4034 (analogue of 40Kh13 steel) steels at different heating temperature of workpieces are presented. Rational intervals of preliminary lowtemperature heating of workpieces made of studied steels are obtained. It allows to decrease forces during cold forging, loads on the working tool and to increase of tool life time up to 2 times.
Pathological diagnostics of pig diseases
Authors:   Professor, Doctor of Veterinary Sciences, Head of the Department of Pathological Anatomy and Forensic Veterinary Medicine, St. Petersburg State University of Veterinary Medicine, Kudryashov A.A. , Balabanova V.I. ,   Doctor of Veterinary Science, Associate Professor of the Department of Pathological Anatomy and Forensic Veterinary Medicine, St. Petersburg State University of Veterinary Medicine, Maksimov T.P. ,   Candidate of Veterinary sciences, member of the expert advisory council for veterinary medicine at the National Union of Pig Breeders of the Russian Federation, Maksimova M.I. ,   Candidate of Veterinary science, Assistant of the Department of Pathological Anatomy and Forensic Veterinary Medicine, St. Petersburg State University of Veterinary Medicine
Published: November 2021

This book accumulates authors’ practical knowledge and experience in pig pathology. It contains a big volume of theoretical and illustrative material, collected during authors’ many years long pig dissecting practice on pig farms in Russia. Most of the diseases presented in the book are diseases of the modern livestock of Russian pig farms, studied by the authors in the last 10 years until 2021. There are more than 460 original photographs of pig organs with pathological changes due to different diseases and pathological conditions. Methodological material on pig necropsy is also presented, as well as differential diagnosis tables.
Competencias en las clases de idiomas del mundo en la virtualidad
Authors:   Indian Land High School, Perdomo Aida Cristina , Tarwater Reeves Allison ,   Charlotte Christian School, Gómez-Saxon Nhora S. ,   South Mecklenburg High School
Published: November 2021

Los educadores del siglo XXI deberán ser valientes y arriesgarse a redireccionar los sistemas educativos hacia un desarrollo sostenible y una educación inclusiva, con un énfasis en la formación de competencias adaptables y transferibles. Además, deberán navegar entre las TIC y las necesidades de centrar el enfoque del proceso enseñanza-aprendizaje en el estudiante. Después de la pandemia del Covid-19 los profesores saben que la incertidumbre es lo único cierto y que sus herramientas más seguras son el instinto docente para encontrar la dirección que se le debe dar a sus pupilos. Este artículo investigativo está basado en una revisión documental sobre la educación por competencias, la virtualidad y la enseñanza de las lenguas del mundo basadas en la visión de UNESCO 2030. Se concluyó que la virtualidad llegó a la educación para quedarse y es importante hallar un balance TIC-personalización, porque se educa individuos que necesitan conexiones humanas fuertes y saludables.
PERAN ORANG TUA MENINGKATKAN MOTIVASI BELAJAR MATEMATIKA SISWA SELAMA PANDEMI COVID-19 DI LINGKUNGAN III KECAMATAN SOSORGADONG
Authors: Hutagalung Maswaras Hari , Nasution Zulfadli , Siregar Eva Yanti
Published: November 2021

Latar belakang penelitian ini adalah pandemi Covid-19 yang menyebabkan siswa merasa bosan dalam belajar. Hal ini menuntut orang tua membantu siswa dalam belajar di rumah dan memberikan motivasi agar siswa dapat berprestasi secara maksimal. Penelitian ini bertujuan untuk mengetahui peran orang tua dalam meningkatkan motivasi belajar matematika siswa pada periode pandemi Covid-19 di Lingkungan III Kecamatan Sosorgadong. Pendekatan penelitian yang digunakan adalah deskriptif kualitatif dan subjeknya adalah seluruh siswa (SMP) di Lingkungan III Kecamatan Sosorgadong. Angket dan wawancara digunakan untuk mengumpulkan data. Hasil penelitian menunjukkan peran orang tua dalam meningkatkan motivasi belajar matematika siswa pada periode pandemi Covid-19 meliputi mendampingi, mengontrol, mengawasi siswa dalam proses belajar mengajar, dan melengkapi fasilitas siswa.
ANALISIS MINAT BELAJAR SELAMA PANDEMI COVID-19 DI SMP NEGERI 1 BARUS
Authors: Situmorang Suhetni Asmarita , Ritonga Mhd. Nau , Siregar Eva Yanti
Published: November 2021

Latar belakang penelitian ini adalah pandemi Covid-19 pada awal tahun 2020 yang menyebabkan proses belajar mengajar berubah dari offline menjadi online. Hal ini menyebabkan keaktifan siswa dalam belajar berkurang. Tujuan penelitian ini adalah untuk mengetahui minat belajar siswa pada periode pandemi Covid-19 pada siswa kelas VII SMP Negeri 1 Barus. Angket digunakan dalam pengumpulan data dan subjek terdiri dari 26 siswa. Hasil penelitian menunjukkan 34,61% kategori cukup (9 siswa), 11,24% kategori baik (3 siswa), 3,85% kategori sangat baik (1 siswa).
PENGARUH MODEL PEMBELAJARAN PBL BERBANTUAN ALAT PERAGA DALAM PENINGKATAN KEMAMPUAN PENALARAN MATEMATIS
Authors: Aulya Richa , Purwaningrum Jayanti Putri
Published: November 2021

Dalam pembelajaran matematika, kemampuan penalaran matematis siswa bersifat penting dikarenakan pembelajaran tersebut lebih ditekankan pada suatu aktivitas pemecahan masalah dan penalaran yang sangat erat serta berkaitan dengan pencapaian prestasi siswa. Namun, pada kondisi saat ini, penalaran matematis siswa dalam pembelajaran matematika masih dianggap kurang dan belum menekankan secara khusus. Penalaran matematis siswa yang masih rendah  perlu diperbaiki dalam proses pembelajaran matematika. Ada beberapa cara untuk melatih siswa dalam bernalar yakni dengan menggunakan model pembelajaran dan alat peraga. Model pembelajaran yang dapat meningkatkan kemampuan penalaran matematis siswa agar menjadikan situasi belajar menyenangkan dan membuat siswa tidak merasa bosan yakni model pembelajaran problem based learning (PBL). Dengan menggabungkan model problem based learning dan alat peraga dapat meningkatkan kemampuan matematis siswa sehingga dapat tercapainya tujuan pembelajaran dan siswa tidak hanya sekedar menghafal melainkan juga memahami materi pelajaran.
A Bibliometric Analysis of Behavioral Finance and Behavioral Accounting
Authors: Singh Bharati
Published: November 2021

This paper presents a bibliometric analysis of relevant publications in the field of behavioral finance and behavioral accounting. The analysis shows that the emerging themes of research in recent years in behavioral finance is on investors’ sentiment, social media, investors’ attention, and financial literacy. In the field of behavioral accounting, biases such as  overconfidence, framing effects or cognitive constraints on information processing, have been explored in greater detail. Other than cognitive biases, this field includes studies such as behavioral tax, organizational ecology, and performance evaluative style of organization, among others. Interestingly, our analysis suggests that research in behavioral accounting is comparatively underdeveloped than research in behavioral finance. This bibliometric analysis has been extended by network analysis using, “Visualization of similarities, (VOS) viewer” software. Using the themes generated here the direction for future scope of research work has been discussed.
Hoya buntokensis (Apocynaceae, Asclepiadoideae), a new myrmecophytic species and Hoya wallichii subsp. tenebrosa, a new subspecies from Borneo (Kalimantan, Indonesia)
Authors: Rahayu S. , Rodda M.
Published: November 2021

We describe a new Hoya species from Central Kalimantan, H. buntokensis, and a new subspecies of H. wallichii from West Kalimantan, Hoya wallichii subsp. tenebrosa. Hoya buntokensis is part of a group of four species that form specialised leaf
structures harbouring ants (here defined as megadomatia), and it is most similar to H. undulata . Hoya buntokensis differs from H. undulata in lamina margin (flat vs undulate); shape of corona lobes outer processes (fan shaped vs elliptic), and in the pollinarium morphology
(corpusculum larger than pollinia vs corpusculum smaller than pollinia). Both H. wallichii subsp. wallichii and H. wallichii subsp. tenebrosa are slender plants with ovate to oblong, thinly coriaceous glabrous leaves, slender peduncles with 1 or 2 flowers open at
a time, and broadly campanulate corollas. Hoya wallichii subsp. tenebrosa differs from H. wallichii subsp. wallichii in corolla colour (dark purple with a paler edge vs white-cream), corona lobe shape and surface (broadly elliptic, spreading and with a minute inner
process, almost black with a velvety surface vs kidney-shaped, erect and with a well-developed acuminate inner process, purple with a shiny surface).
Epidemiology of Collective Food poisoning in Tlemcen- Western Algeria: A retrospective analysis of data from 2011-2020
Authors: Meryem Allioua  , Waffa Bouali  , Ilham Mkedder
Published: November 2021

Food poisoning is a serious public health problem in the world that needs to be addressed as early as possible. However, mitigation efforts can be possi-ble only when data and information resulting from the implementation of monitoring or continuous surveillance are available. Here we report a study that was conducted taking into account all the data of poisoning report sheets, filled in by the doctor in charge of the case or, failing that, by the nurse, coming from health facilities (in sixteen regions in Tlemcen) were in-cluded in the analysis. For data processing, we have used some descriptive tools such as the frequencies and the lethality rates. The description of the sample concerned the characteristics of the poisoned population (year, gen-der, age, origin, hospitalisation, etc.) and the characteristics related to the suspected food. The survey showed a concentration of family focus, espe-cially in urban areas. Meats, Chickens and cream filled bakery food were the three most important incriminated foods and most of the infections in the outbreaks were related to fecal coliform, Clostridium and Staphylococcus. Some of the factors identified to contribute to food poisoning were lack of self-hygiene by food handlers and poor water and environmental supplies, poor preservation of food, the consumption of inadequately cooked or thawed meat or chicken, cross-contamination of food from infected food handlers, as well as the lack of awareness and information transmission and the lack of health infrastructures and means of communications. The present study highlights the needs for creating adequate infrastructure related to hygiene, regular epidemiological monitoring and increasing the awareness level of the residents.
Assessment of risks constraining the sustainable development of forest ecosystems in the Saïda Mountains (Algeria) by using FMECA approach
Authors: Adda-Hanifi Nadia Nora  , Terras Mohamed  , Bouchentouf Salim  , Mellal Tahar  , Labani Abder-rahmane
Published: November 2021

Mountain forest ecosystems and other biodiversity reserves represent “safety nets” for many communities for their livelihoods. They are economi-cally important sources of wood, fodder, food and non-wood forest prod-ucts. Controlling. the sustainable management of forest ecosystems neces-sarily involves identifying and assessing their condition and circumstance. The method chosen to set the prerequisites for a strategy to safe-guard the cork oak forests, is the one used to identify failures in systems: Failure Mode Analysis and Criticality Evaluation (FMACE). The results sought are recorded in a matrix based on the following points: Identification of hazard and risk sources; Segmentation of the factors causing hazards; Risk evaluation (severity, frequency, non-Detection) (BOUCHAOUR-DJABEUR,2020). The use of the Failure mode effects and criticality analysis approach (FMECA) dedi-cated to risk management for the identification and assessment of risks is possible and highly appreciated. In order to understand the degradation pro-cess of forest formations in Saida Mountains (Algeria), two matrices from modified FMECA method allowed identification of 15 main defective targets. Identified failures have been grouped into 5 categories namely: organization-al, technical, professional, management and socio-economic in order to facil-itate their remediation. For each failure, a score was assigned, allowing clas-sification of breaches in order to set up an action plan based on priorities. Results from our present evaluation study based on the FMECA approach will allow various actors of forest and mountain domain to better under-stand the degradation of this natural space and help to make decisions and undertake valid remediation actions.
Implication of bats in the transmission of zoonotic strains of Salmonella in Benin
Authors: Kouengoua Armelle  , Deguenon Esther  , Dougnon T. Victorien  , Farougou Souaïbou  , Kpodékon Tchokponhoué Tchégninougbo Marc  , Alogninouwa Théodore
Published: November 2021

Bats play a very important role in the transmission of zoonosis, including Salmonella. Salmonella are responsible for salmonellosis, which is a major public health concern. They are the cause of many hospitalizations and deaths worldwide. The objective of this study was to contribute to the im-provement of the control of zoonotic strains of Salmonella in Benin. To do so, a collection of 400 bats was made and after slaughter and dissection, bacteriological analyses were made on the gut to isolate and identify the different strains of Salmonella carried by these bats. The resistance profile and the presence of specific virulence gene such invA, spvR, spvC and stn were studied. The strain Salmonella Typhimurium ATCC 14028 was used as a positive control. Of the 400 bats slaughtered, 14 isolate of Salmonella spp were identified by API gallery. Therefore, the prevalence of Salmonella strains in bats was 3.5%. Salmonella spp strains isolated showed total re-sistance to amoxicillin, clavulanic acid and also to first and second genera-tions of cephalosporins. The stn and invA genes have been found in the DNA of all strains of Salmonella isolated. The consumption of bats being a com-mon practice in Benin, the risk of virulent Salmonella strains transmission must be taken very seriously and people must be sensitized to this in order to slow down the risk of infection.
Technological Aptitude and safety of Enterococus faecium Bioactive Strains Isolated from south Algerian Camel Milk
Authors: Mahmoudi Fatima  , Arici Muhammet
Published: November 2021

Twenty strains of Enterococcus faecium were isolated from raw camel milk (Camelus dromedarius) These bacteria are classified as lactic acid bacteria. After isolating Enterococci from milk of camel, we selected three strains and identificated by phenotypic characteristic and FTIR analysis. In vitro studies have shown that the strains of Enterococcus faecium selected have a remark-able probiotic characteristic, and they can survive at low pH (2 and 4). The strains were able to survive at pH 3 in the presence of 3mg/mL pepsin, and able to produce dextran, the strains have a proteolytic activity (degradation of milk casein). These conditions (temperature, pH, concentration of salt, etc.), are ideal for the growth and proliferation of enterococci. This study sought to identify the species and describe the antimicrobial resistance fea-tures of Enterococci isolated from camel milk. The antimicrobial activity was investigated by isolating strains from camel milk of south Algeria and testing them against certain microorganism strains such as Staphylococcus aureus and Escherichia coli, Pseudomonas aeroginosa, Candida albicans, Aspergillus brasiliensis, and Alternaria. We concluded that these strains have a techno-logical efficiency and have potential for use as new probiotic starters.
Simultaneous Multiwavelength Flare Observations of EV Lacertae
Authors: Paudel Rishi R. , Barclay Thomas , Schlieder Joshua E. , Quintana Elisa V. , Gilbert Emily A. , Vega Laura D. , Youngblood Allison , L. Silverstein Michele , Osten Rachel A. , Tucker Michael A. , Huber Daniel , Do Aaron , Hamaguchi Kenji , Mullan D. J. , Gizis John E. , Monsue Teresa A. , Colón Knicole D. , Boyd Patricia T. , Davenport James R. A. , Walkowicz Lucianne
Published: November 2021

We present the first results of our ongoing project conducting simultaneous multiwavelength observations of flares on nearby active M dwarfs. We acquired data of the nearby dM3.5e star EV Lac using five different observatories: NASA’s Transiting Exoplanet Survey Satellite (TESS), NASA’s Neil Gehrels Swift Observatory (Swift), NASA’s Neutron Interior Composition Explorer (NICER), the University of Hawaii 2.2-meter telescope (UH88), and the Las Cumbres Observatory Global Telescope (LCOGT) Network. During the ∼25 days of TESS observations, we acquired three simultaneous UV/X-ray observations using Swift that total ∼18 ks, 21 simultaneous epochs totaling ∼98 ks of X-ray data using NICER, one observation (∼3 hr) with UH88, and one observation (∼3 hr) with LCOGT. We identified 56 flares in the TESS light curve with estimated energies in the range log E
T (erg) = (30.5–33.2), nine flares in the Swift UVM2 light curve with estimated energies in the range log E
UV (erg) = (29.3–31.1), 14 flares in the NICER light curve with estimated minimum energies in the range log E

N
(erg) = (30.5–32.3), and 1 flare in the LCOGT light curve with log E

L
(erg) = 31.6. We find that the flare frequency distributions (FFDs) of TESS and NICER flares have comparable slopes, β

T
= −0.67 ± 0.09 and β

N
= − 0.65 ± 0.19, and the FFD of UVOT flares has a shallower slope (β

U
= −0.38 ± 0.13). Furthermore, we do not find conclusive evidence for either the first ionization potential (FIP) or the inverse FIP effect during coronal flares on EV Lac.
Observational Evidence Points at AGB Stars as Possible Progenitors of CEMP-s and CEMP-r/s Stars*
Authors: Purandardas Meenakshi , Goswami Aruna
Published: November 2021

The origin of enhanced abundance of heavy elements observed in the surface chemical composition of carbon-enhanced metal-poor (CEMP) stars still remains poorly understood. Here, we present detailed abundance analysis of seven CEMP stars based on high-resolution (R ∼ 50,000) spectra that reveal enough evidence of asymptotic giant branch (AGB) stars being possible progenitors for these objects. For the objects HE 0110−0406, HE 1425−2052, and HE 1428−1950, we present for the first time a detailed abundance analysis. Our sample is found to consist of one metal-poor ([Fe/H] < −1.0) and six very metal-poor ([Fe/H] < −2.0) stars with enhanced carbon and neutron-capture elements. We have critically analyzed the observed abundance ratios of [O/Fe], [Sr/Ba], and [hs/ls] and examined the possibility of AGB stars being possible progenitors. The abundance of oxygen estimated in the program stars is characteristic of AGB progenitors except for HE 1429−0551 and HE 1447+0102. The estimated values of [Sr/Ba] and [hs/ls] ratios also support AGB stars as possible progenitors. The locations of the program stars in the absolute carbon abundance A(C) versus [Fe/H] diagram, along with the Group I objects, hint at the binary nature of the object. We have studied the chemical enrichment histories of the program stars based on abundance ratios [Mg/C], [Sc/Mn], and [C/Cr]. Using [C/N] and 12C/13C ratios, we have examined whether any internal mixing had modified their surface chemical compositions. Kinematic analysis shows that the objects HE 0110−0406 and HE 1447+0102 are thick-disk objects and the remaining five objects belong to the halo population of the Galaxy.
The IGRINS YSO Survey II: Veiling Spectra of Pre-main-sequence Stars in Taurus-Auriga
Authors: Kidder Benjamin , Mace Gregory , López-Valdivia Ricardo , Sokal Kimberly , Catlett Victoria E. , Gutiérrez Miguel , Tofflemire Benjamin M. , Jaffe Daniel
Published: November 2021

We present measurements of the H- and K-band veiling for 141 young stellar objects (YSOs) in the Taurus-Auriga star-forming region using high-resolution spectra from the Immersion Grating Near-Infrared Spectrometer. In addition to providing measurements of r

H
and r

K
, we produce low-resolution spectra of the excess emission across the H and K bands. We fit temperatures to the excess spectra of 46 members of our sample and measure near-infrared excess temperatures ranging from 1200–2200 K, with an average of 1575 ± 225 K. We compare the luminosity of the excess continuum emission in Class II and Class III YSOs and find that a number of Class III sources display a significant amount of excess flux in the near-infrared. We conclude that the mid-infrared SED slope, and therefore young stellar object classification, is a poor predictor of the amount of near-infrared veiling. If the veiling arises in thermal emission from dust, its presence implies a significant amount of remaining inner-disk (<1 au) material in these Class III sources. We also discuss the possibility that the veiling effects could result from massive photospheric spots, unresolved binary companions, or accretion emission. Six low-mass members of our sample contain a prominent feature in their H-band excess spectra that is consistent with veiling from cool photospheric spots.
Impact of Water-latent Heat on the Thermal Structure of Ultra-cool Objects: Brown Dwarfs and Free-floating Planets
Authors: Tang Shih-Yun , Robinson Tyler D. , Marley Mark S. , Batalha Natasha E. , Lupu Roxana , Prato L.
Published: November 2021

Brown dwarfs are essential targets for understanding planetary and sub-stellar atmospheres across a wide range of thermal and chemical conditions. As surveys continue to probe ever deeper and as observing capabilities continue to improve, the number of known Y dwarfs—the coldest class of sub-stellar objects, with effective temperatures below about 600 K—is rapidly growing. Critically, this class of ultra-cool objects has atmospheric conditions that overlap with solar-system worlds and, as a result, tools and ideas developed from studying Earth, Jupiter, Saturn, and other nearby worlds are well suited for application to sub-stellar atmospheres. To that end, we developed a one-dimensional (vertical) atmospheric structure model for ultra-cool objects that includes moist adiabatic convection, as this is an important process for many solar-system planets. Application of this model across a range of effective temperatures (350, 300, 250, 200 K), metallicities ([M/H] of 0.0, 0.5, 0.7, 1.5), and gravities (log g of 4.0, 4.5, 4.7, 5.0) demonstrates strong impact of water-latent heat release on simulated temperature-pressure profiles. At the highest metallicities, water-vapor mixing ratios reach an Earth-like 3% with associated major alterations to the thermal structure in the atmospheric regions where water condenses. Spectroscopic and photometric signatures of metallicity and moist convection should be readily detectable at near- and mid-infrared wavelengths, especially with James Webb Space Telescope observations, and can help indicate the formation history of an object.
Detached Shell Carbon Stars: Tracing Thermal Pulses on the Asymptotic Giant Branch
Authors: Kastner Joel H. , Wilson Emily
Published: November 2021

We consider whether the subset of carbon-rich asymptotic giant branch (AGB) stars that exhibit detached, expanding circumstellar shells may reveal the past histories of these stars as having undergone helium shell flashes (thermal pulses) on the AGB. We exploit newly available Gaia parallaxes and photometry, along with archival infrared photometry, to obtain refined estimates of the luminosities of all (12) known detached shell carbon stars. We examine the relationship between these luminosities and the estimated dynamical ages (ejection times) of the detached shells associated with the 12 stars, which range from ∼1000 to ∼30,000 yr. When arranged according to detached shell dynamical age, the (implied) luminosity evolution of the known detached shell carbon stars closely follows the predicted “light curves” of individual thermal pulses obtained from models of AGB stars. The comparison between data and models suggests that detached shell carbon stars are descended from ∼2.5 to 4.0 M
⊙ progenitors. We conclude that detached shell carbon stars may serve as effective tracers of the luminosity evolution of AGB thermal pulses.
Circumstellar Medium Constraints on the Environment of Two Nearby Type Ia Supernovae: SN 2017cbv and SN 2020nlb
Authors: Sand D. J. , Sarbadhicary S. K. , Pellegrino C. , Misra K. , Dastidar R. , Brown P. J. , Itagaki K. , Valenti S. , Swift Jonathan J. , Andrews J. E. , Bostroem K. A. , Burke J. , Chomiuk L. , Dong Y. , Galbany L. , Graham M. L. , Hiramatsu D. , Howell D. A. , Hsiao E. Y. , Janzen D. , Jencson J. E. , Lundquist M. J. , McCully C. , Reichart D. , Smith Nathan , Wang Lingzhi , Wyatt S.
Published: November 2021

We present deep Chandra X-ray observations of two nearby Type Ia supernovae, SN 2017cbv and SN 2020nlb, which reveal no X-ray emission down to a luminosity L
X ≲ 5.3 × 1037 and ≲ 5.4 × 1037 erg s−1 (0.3–10 keV), respectively, at ∼16–18 days after the explosion. With these limits, we constrain the pre-explosion mass-loss rate of the progenitor system to be

M

̇

< 7.2 × 10−9 and < 9.7 × 10−9
M
⊙ yr−1 for each (at a wind velocity v

w
= 100 km s−1 and a radius of R ≈ 1016 cm), assuming any X-ray emission would originate from inverse Compton emission from optical photons upscattered by the supernova shock. If the supernova environment was a constant-density medium, we would find a number density limit of n
CSM < 36 and < 65 cm−3, respectively. These X-ray limits rule out all plausible symbiotic progenitor systems, as well as large swathes of parameter space associated with the single degenerate scenario, such as mass loss at the outer Lagrange point and accretion winds. We also present late-time optical spectroscopy of SN 2020nlb, and set strong limits on any swept up hydrogen (L
Hα
< 2.7 × 1037 erg s−1) and helium (L
He,λ6678 < 2.7 × 1037 erg s−1) from a nondegenerate companion, corresponding to M

H
≲ 0.7–2 × 10−3
M
⊙ and M
He ≲ 4 × 10−3
M
⊙. Radio observations of SN 2020nlb at 14.6 days after explosion also yield a non-detection, ruling out most plausible symbiotic progenitor systems. While we have doubled the sample of normal Type Ia supernovae with deep X-ray limits, more observations are needed to sample the full range of luminosities and subtypes of these explosions, and set statistical constraints on their circumbinary environments.
Rapid Formation of Gas-giant Planets via Collisional Coagulation from Dust Grains to Planetary Cores
Authors: Kobayashi Hiroshi , Tanaka Hidekazu
Published: November 2021

Gas-giant planets, such as Jupiter, Saturn, and massive exoplanets, were formed via the gas accretion onto the solid cores, each with a mass of roughly 10 Earth masses. However, rapid radial migration due to disk–planet interaction prevents the formation of such massive cores via planetesimal accretion. Comparably rapid core growth via pebble accretion requires very massive protoplanetary disks because most pebbles fall into the central star. Although planetesimal formation, planetary migration, and gas-giant core formation have been studied with a lot of effort, the full evolution path from dust to planets is still uncertain. Here we report the result of full simulations for collisional evolution from dust to planets in a whole disk. Dust growth with realistic porosity allows the formation of icy planetesimals in the inner disk (≲10 au), while pebbles formed in the outer disk drift to the inner disk and there grow to planetesimals. The growth of those pebbles to planetesimals suppresses their radial drift and supplies small planetesimals sustainably in the vicinity of cores. This enables rapid formation of sufficiently massive planetary cores within 0.2–0.4 million years, prior to the planetary migration. Our models shows the first gas giants form at 2–7 au in rather common protoplanetary disks, in agreement with the exoplanet and solar systems.
Color Dependence of Planetary Transit Depths due to Large Starspots and Dust Clouds: Application to PTFO 8-8695
Authors: Grosson Theodore A. , Johns-Krull Christopher M.
Published: November 2021

Although thousands of exoplanets have now been discovered, there is still a significant lack of observations of young planets only a few Myr old. Thus there is little direct evidence available to differentiate between various models of planet formation. The detection of planets of this age would provide much-needed data that could help constrain the planet formation process. To explore what transit observations of such planets may look like, we model the effects of large starspots and dust clouds on the depths of exoplanet transits across multiple wavelengths. We apply this model to the candidate planet PTFO 8-8695b, whose depths vary significantly across optical and infrared wavelengths. Our model shows that, while large starspots can significantly increase the color dependence of planetary transits, a combination of starspots and a large cloud surrounding the planet is required to reproduce the observed transit depths across four wavelengths.
Analysis of Cohesion in Fast-spinning Small Bodies
Authors: Li Xiangyu , Scheeres Daniel J.
Published: November 2021

In this paper, the structural stability of a fast-spinning small body is investigated. In particular, a nonlinear yield condition in tensile stress is applied to estimate the required cohesion in a fast-spinning small body. The least upper bound of required cohesion is investigated for both ellipsoid and irregular shape models. The stress state of a fast-spinning ellipsoid is discussed analytically, and the effects of spin rates and size ratios are analyzed. For an irregularly shaped body, an element average stress method is developed to estimate the range of stress of any element in the body, where only self-gravity and centrifugal force are considered. The maximum tensile stress in the whole body is used to solve the required cohesion. Finally, the proposed methods are applied to different asteroid shape models. The result shows that the least upper bound of cohesion is mainly determined by the spin rate and length of the major axis, but an irregular shape will change the stress distribution and cause a stressed surface. The required cohesion of a fast-spinning small body varies between tens to 1000 Pa. The methods developed in this paper can rapidly provide a conservative lower bound on the cohesion in a fast-spinning body and qualitatively show the distribution of stress, which provides an effective way to study the structural stability of fast-spinning bodies of those bodies.
The role of the committee of the regions (CoR) to implement the Green Deal at the local level: an overview of Italy
Authors: Messina Giovanni ,   Societies in the Affiliation Department of Cultures and Society, University of Palermo, Palermo, Italy
Published: November 2021

The contribution focuses on the role of cities in the implementation of the so-called Green Deal, the ambitious program proposed by the European Commission, in accordance with the objectives set by the Paris Agreements, to implement the use of clean energy resources, favour the circular economy, restore biodiversity and reduce pollution. The Plan, which for the seven-year period 2021-2027 has a budget of economic resources of 100 billion Euro, aims to involve in transcalar perspective all territorial and administrative levels of the Member States and thus contribute to the achievement, in 2050, of climate neutrality. The main objective of the work is then to concentrate, with descriptive intent, on the policies that, in Italy, are being activated at local level in coherence with the European perspectives. In particular, reference will be made to the initiatives proposed and sponsored in Italy by the Committee of the Regions of which a critical overview is proposed. A further reflection will be dedicated to how digital innovation is called to support the macro-policies of energy transition in the EU.
Multi-functional organic field effect transistor based on a dual doped P3HT
Authors: Debesay Thomas ,   Center for Materials Research, Norfolk State University, 700 Park Avenue, Norfolk, VA 23504, USA, Sun Sam-Shajing , Bahoura Messaoud ,   Department of Chemistry, Norfolk State University, 700 Park Avenue, Norfolk, VA 23504, USA,   Engineering Department, Norfolk State University, 700 Park Avenue, Norfolk, VA 23504, USA
Published: November 2021

A dual doped regio-regular poly(3-hexylthiophene-2, 5-diyl) (P3HT) was investigated to develop a multi-functional organic field effect transistor (OFET). OFETs based on a pristine P3HT and a dual doped P3HT (P3HT:PCBM:I2 blend) were fabricated to study the impact of doping on the electrical properties of the samples, and to examine the mechanism through which it amplified the output performance of the doped OFETs. A series of experimental techniques such as device electrical characterization, active layer surface analysis, and photon absorptivity measurements were conducted to quantitatively characterize the principal parameters that are susceptible to change as a result of doping. Topographic mapping revealed the expected doping-induced improvements in surface morphology, which could be associated with the ability of iodine to improve interdigitation between adjacent P3HT chains. Similarly, absorption spectra showed a 3 nm red-shift of the light absorbance spectrum of the doped samples compared to the undoped samples. The electrical conductivity of the samples was also examined at various conditions of temperature and light intensity, and the values obtained from the doped sample were approximately one order of magnitude higher compared to those of the undoped sample at room temperature, which explains the reason behind the higher output current drawn from the doped device compared to that of the undoped OFET. The explanation for this is two-fold, both PCBM and iodine promote the generation of free charge carriers, which increases the electrical conductivity of the active layer; and in addition to that, the improved P3HT main-chain interdigitation brought about by the introduction of iodine results in an increase in charge-carrier mobility, which also results in higher electrical conductivity. The findings of this study offers valuable information that could be instrumental in further advancing the future organic semiconductors based studies.
Faber polynomial coefficients estimates for certain subclasses of $ q $-Mittag-Leffler-Type analytic and bi-univalent functions
Authors: Jia Zeya ,   School of Mathematics and Statistics, Huanghuai University, Zhumadian 463000, Henan, China, Khan Nazar , Khan Shahid , Khan Bilal ,   Department of Mathematics, Abbottabad University of Science and Technology, Abbottabad 22010, Pakistan,   Department of Mathematics and Statistics, Riphah International University Islamabad 44000, Pakistan,   School of Mathematical Sciences and Shanghai Key Laboratory of PMMP, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
Published: November 2021

In this paper, we introduce the $ q $-analogus of generalized differential operator involving $ q $-Mittag-Leffler function in open unit disk

   \begin{document}$ \begin{equation*} E = \left \{ z:z\in \mathbb{C\ \ }\text{ and} \ \ \left \vert z\right \vert <1\right \} \end{equation*} $\end{document}

and define new subclass of analytic and bi-univalent functions. By applying the Faber polynomial expansion method, we then determined general coefficient bounds $ |a_{n}| $, for $ n\geq 3 $. We also highlight some known consequences of our main results.
Protection Motivation Theory and Rabies Protective Behaviors Among School Students in Chonburi Province, Thailand
Authors: Laorujisawat Mayurin , Wattanaburanon Aimutcha , Abdullakasim Pajaree , Maharachpong Nipa
Published: November 2021

Objectives: The aim of this study was to predict rabies protective behaviors (RPB) based on protection motivation theory (PMT) among fourth-grade students at schools in Chonburi Province, Thailand.Methods: This cross-sectional study was conducted from December 2020 to February 2021. A multistage sampling technique was used for sample selection. The questionnaire was divided into socio-demographic data and questions related to PMT and RPB. Descriptive statistical analysis was conducted using the EpiData program and inferential statistics, and the results were tested using the partial least squares model with a significance level of less than 5%.Results: In total, 287 subjects were included, of whom 62.4% were girls and 40.4% reported that YouTube was their favorite media platform. Most participants had good perceived vulnerability, response efficacy, and self efficacy levels related to rabies (43.9, 68.6, and 73.2%, respectively). However, 54.5% had only fair perceived severity levels related to rabies. Significant positive correlations were found between RPB and the PMT constructs related to rabies (β, 0.298; p<0.001), and the school variable (S4) was also a predictor of RPB (β, -0.228; p<0.001). Among the PMT constructs, self efficacy was the strongest predictor of RPB (β, 0.741; p<0.001).Conclusions: PMT is a useful framework for predicting RPB. Future RPB or prevention/protection intervention studies based on PMT should focus on improving self efficacy and response efficacy, with a particular focus on teaching students not to intervene with fighting animals. The most influential PMT constructs can be used for designing tools and implementing and evaluating future educational interventions to prevent rabies in children.
The Student-centered STEM Learning Model Based on Artificial Intelligence Project: A Case Study on Intelligent Car
Authors: Liao Jianxin , Yang Jingmin , Zhang Wenjie
Published: November 2021

Artificial intelligence has become a crucial technology for the development of the times. In the practice of emerging engineering education about artificial intelligence, how to enhance students' understanding of artificial intelligence technology, strengthen students' enthusiasm for learning, and improve their research and application innovation ability is a key issue. This study constructs a student-centered STEM learning model that emphasizes innovative applications, so as to promote project-based learning effects for students, reduce learning burnout as well as improve their research and application capabilities. We take the design improvement and experimental result analysis of the intelligent car target tracking system as an example and verifies the effectiveness of the learning model through multi-dimensional evaluation and comparative experiments. Under the same experimental equipment and necessary project functions, we divide students into STEM learning groups and traditional project learning groups to carry out learning activities. This study focused on the learning process of the STEM learning group. The empirical analysis shows that the project completion time and quantitative evaluation of the effects are better than the general learning model.
A Proposed Architecture of an Intelligent System for Assessing the Student’s UML Class Diagram
Authors: Jebli Rhaydae , El Bouhdidi Jaber , Chkouri Mohamed Yassin
Published: November 2021

Today educational technology and computer applications can enhance the level of impact of the educational process, currently a heavy research has more and more interested in computing technologies and applications. This work presents a proposed architecture of an intelligent system for the automated assessment of student's production when modeling an UML class diagram from textual specification, this assessment becomes really difficult in problem of diagrammatic answers. The main objective is to develop a system to assess the UML class diagrams by defining differences, errors made by the students, grading them and providing critical feedbacks, and this could be easier for any teachers to assess any number of students. To achieve this goal we have to analyze, transform and compare the student’s diagram with the reference’s production provided by teacher.
Development of a Set of Requirements for the Hardware and Software of LMS Services of the University
Authors: Zuev Vitaly , Kakisheva Lazzat , Denissova Natalya , Kumargazhanova Saule , Smailova Saule
Published: November 2021

This article considers the issues of expert research to determine a set of require-ments for the hardware and software of the key LMS services of the university. Expert questionnaires have been developed to determine categories, including in-dicators of the functioning of the University's LMS services. Based on the devel-oped questionnaires, a survey of various user groups was conducted: developers, administrators, teachers and students. Based on the processing results, the final set of requirements for the LMS reference model was determined