bluuebunny/crossref_metadata_2025 huggingface dataset:
Fechamento natural de diastema interincisal após realização de frenectomia labial: relato de caso
Authors: Moreira Thaylla Alves , Boton Patricia , Martins Jordana Resende , Garcia Natália Galvão , Favretto Carla Oliveira
Published: June 2022

O freio labial superior, durante seu estágio de crescimento, está sujeito a variação de tamanho e forma, este apresenta-se como uma estrutura anatômica que tem por finalidade limitar os movimentos labiais. Quando atípico, pode causar diastema na linha média, favorecendo o aparecimento de doença periodontal, retrações gengivais, alterações fonéticas e produzir efeitos estéticos indesejáveis. O objetivo do trabalho foi apresentar um relato de caso de frenectomia labial, realizada no momento oportuno, afim de possibilitar o fechamento do diastema, estabilizando a oclusão e melhorando a estética. Trata-se de uma paciente de gênero feminino, treze (13) anos de idade, que apresentava o freio labial hipertrófico ocasionando um diastema interincisal, o que justificava a insatisfação com seu sorriso. No exame clínico, o tracionamento labial produzia uma isquemia da papila palatina, sendo evidente sua presença entre os incisivos. O tratamento foi através da técnica de frenectomia labial, por meio de exérese simples, por ser uma técnica simples e com mínimo de desconforto para a paciente. Após sete dias, a ferida cirúrgica apresentou-se com um excelente reparo tecidual. Um ano após a realização do procedimento, observou-se o fechamento natural do diastema, alcançando a satisfação da paciente com o seu sorriso. Concluiu-se que a indicação correta da remoção do freio labial hipertrófico propicia a correção de diastemas de forma natural ou por intervenção ortodôntica, devolvendo para a paciente uma oclusão fisiológica e estética satisfatória.
Demand flexibility modelling for long term optimal distribution grid planning
Authors: Bødal Espen Flo , Lakshmanan Venkatachalam , Sperstad Iver Bakken , Degefa Merkebu Zenebe , Hanot Maxime , Ergun Hakan , Rossi Marco
Published: June 2022

Optimization tools for long-term grid planning considering flexibility resources require aggregated flexibility models that are not too computationally demanding or complex. Still, they should capture the operational benefits of flexibility sufficiently accurately for planning purposes. This paper investigates the sufficiency of an aggregated flexibility model for planning tools by comparing it against a detailed flexibility model. Two different constraint formulations, namely based on recovery period and temporal proximity were tested to account for post activation dynamics of flexibility resources. The results show that the recovery period based formulation results in excessive demand reduction. The proximity constraint formulation on the other hand results in realistic activation of flexibility resources which represents an improvement over the base formulation without constraints for post activation dynamics.
Traditional Ethnomedicinal Plants Used For Skin Disease by Primitive Tribes of Ananthagiri Mandal, Visakhapatnam District, Andhra Pradesh, India
Authors: Surekha Ch. , B Padal S. , T Rajesh Babu Y.
Published: June 2022

Plant species used in the treatment of skin diseases among the primitive tribes of Ananthagiri Mandal, Visakhapatnam district. To document traditional medicinal plants knowledge used in treating skin diseases by primitive tribes like Porja, Mali, Kotia, Nukhadora and Khonds. Forty-five plant species belonging to 30 families were found to be used specifically in the treatment of various skin diseases. Most preferred species for the management of skin ailments are Abrus precatorius Linn. Alangium salvifolium (Linn.f.) Wang. Asparagus racemosus Wild and Argemone mexicana Linn etc.
Awareness on Cardio Vascular Diseases among Patient's Attendants in a Specialized Hospital in Dhaka, Bangladesh
Authors: Tabassum Dr. Royena , Chowdhury Lt. Col. (Dr.) Sohel Hasan , Tarannum Dr. Rebeaka , Begum Dr. Mahfuza
Published: June 2022

Background: Bangladesh is a developing country where more than 170 million people live, among them, more than 80% live in rural areas. Where people are suffering from various diseases. Cardio Vascular Disease (CVD) is a more common disease in Bangladesh. Hypertension is the most widely prevalent, largely preventable risk factor for CVD accounting for half of the deaths due to ischemic heart disease and stroke. Therefore, due to CVD and CKD, uncontrolled hypertension has huge implications for the disease burden. Aim of the study: The aim of the present study was to assess the status of awareness on CVD among the patient’s attendants in National Institute of Cardiovascular Disease (NICVD), Dhaka, Bangladesh. Methods: This was a cross-sectional study. The study was conducted at National Institute of Cardiovascular Disease (NICVD), Dhaka, Bangladesh in collaboration with the Department of Public Health, Northern University, Dhaka, Bangladesh during the period from September 2017 to December 2017 Before starting data collection, written consent was taken from all the participants. A pre-designed questioner was used to collect data. All the results were calculated with the help of a computer by using the SPSS 22.0 version. Data were presented according to the variable of the study and shown in percentage. Results: In this study maximum number of participants, 56.82% had knowledge about ischemic heart disease, 32.58% had no idea about ischemic heart disease and 9.15% had knowledge about MI and 1.45% have knowledge about coronary artery disease. Maximum 83.83% of participants had knowledge about the risk factor of CVD but 16.17% had no knowledge about the risk factor of CVD. Among the total participants, as the main risk factor of CVD, hypertension was defined by 80%, smoking by 73%, alcoholism by 53%, high fat diet by 52%, DM by 50%, family history of diabetes by 34%, and sedentary lifestyle by 27%. The maximum, 79.2% participants had the idea about the sign-symptoms of CV
Social and Cultural Features of Trilingual Creativity in Oriental Literature and the Work of Nizami Gandzhavi
Authors: Kazimi Parviz Firudin Oqlu
Published: June 2022

This article is aimed at examining the cultural, historical and sociological environment of the peoples known to us as medieval oriental literature - Anatolia, the South Caucasus, Iran and a large part of Central Asia, which created bilingual and trilingual literary examples in "Islamic" cultural geography. As a result of the subjective approach of a number of researchers to this process, incorrect, misleading and harmful terms and concepts were introduced, and we observe the trend of “brand” searches in the history of literature. R. Tagore (India), who wrote excellent works in English, Kafka (Israel), the author of valuable works in German, Nizami Ganjavi (Azerbaijan), who wrote important works in Persian and many others, do they express their national "belonging" in accordance with the language of the works? On the basis of this concept, an attempt is made to analyze the socio-cultural picture of medieval Islamic culture and to identify the "baseless terminology" (which has no scientific basis), to evaluate it on specific examples. The early Islamic culture, the stages of the introduction of the Arabic and Persian languages into everyday life and public life, the process of expanding the Islamic cultural environment as a folk, academic and poetic language are studied and analyzed. We also tried to provide a scientific answer to the erroneous judgments and analyzes of various researchers.
Effect of Denture Cleansers on Color Stability and Flexural Strength of Heat Polymerized Acrylic Resin an In-Vitro Study
Authors: Abubakar Dr. Parvez , Nagaral Dr. Sharnabasappa C , Fatima Dr. Tanveer , Salgar Dr. Abdul Rauf G. H. , Qayum Dr. Syed Abdul , Parveen Dr. Farhath
Published: June 2022

Heat polymerized poly methyl methacrylate is the most commonly used denture base material. Selecting a denture cleanser, compatibility between various type of denture base material and cleanser must be considered to avoid harmful effects. Study objective was to evaluate the changes in flexural strength and colour change of heat cured denture base resins when treated using denture cleansers. Method: The disk shaped specimens15mm in diameter and 4mm in thickness and rectangular shaped specimens 65mm x 10mm x 3.3mm were fabricated using split mould technique. A total of 60 standardized specimens were fabricated and stored in distilled water for 24hrs. After 1 day, the specimens were appropriately labelled and immersed in groups of 20 to prepared denture cleanser solutions for treatment. Solutions were prepared and immersed according to manufactures instructions (Corega tab: one tablet to 200ml of water and immersion time is 15min; Fitty dent: one tablet to 200ml of water and immersion time is 30min). After immersion, the resin specimens will be removed, thoroughly cleanedunder running water, dried with absorbent paper, and then the procedure of immersion will be repeated. This procedure will be performed for a total of 30 times over a period of 6 days simulating patients180 days of cleansing. 10 specimens of each group where tested for flexural strength using universal testing machine. Specimens were loaded until fracture occurred. The peak load was recorded in Newton and the flexural strength was calculated from peak load and another 10 specimens were tested for colour change using spectrophotometer .The specimens were tested on the measuring head of the spectrophotometer. The colour characteristics, tristimulus values X, Y, Z, and CIE (Lab) of specimens, were evaluated. The findings were statistically analysed using ONE -WAY ANOVA and students T test. Results: Heat cure denture base resin used for this study showed significant difference in flexural strength and..... , , , , , Sch J Dent Sci | - DOI :
Motives of Long-Term Participants in Recreational & Fitness Sport from a Socio-Psychological Perspective
Authors: Zarotis George F.
Published: June 2022

In order to achieve competitiveness and a long-term establishment in the market, fitness studios need sustainable product and service innovations. This is of crucial importance, as customer satisfaction can be achieved through the targeted servicing of customer expectations, resulting in a positive influence on customer loyalty and economic success. All value-added processes of the fitness studio must be geared without restriction to the fulfilment of customer expectations. Findings from studies on motives in fitness sport can help, on the one hand, to take into account the special wishes of the athletes in the design of the offers and, on the other hand, to implement their marketing more effectively due to the more specific target group orientation. The present study provides a motive-related orientation framework for the field of fitness sport on the motivation of long-term participants to exercise. Members of a health-oriented fitness club in a large city were surveyed. The questionnaire consisted of 15 items that can be grouped into seven motivational areas. The questionnaires were available in the fitness club and could either be filled out directly on site or taken home and filled out at home. A total of 350 questionnaires were handed out, 278 of which were completed and returned. The response rate was 79.4 percent. The respondents were members who trained exclusively on equipment. The gender distribution is almost equal with a slight surplus (just under 53%) of male respondents. The mean age of respondents is 56.6 years, with a spread around the mean of 13.1 years. Among respondents with a membership of more than one year, the mean length of membership is 11.6 years (dispersion: 7.5 years). The results show that there is a very differentiated picture of the motives for fitness training. The spectrum ranges from motives named by more than 90% of the respondents to motives named by significantly less than 10% of the respondents. The various 15 motives .........
Implementation of Digital Transformation to Minimize the Risk of Incidents in the Upstream Oilfield Service Quality Performance
Authors: Khresna Wihaga Satya , Hamsal Mohammad , Furinto Asnan , Kartono Rano
Published: June 2022

This study aims to determine the implementation of digital transformation to minimize the risk of incidents in the upstream oilfield service quality performance. This research is a literature study discussion from risks in upstream oilfield to the utilization of big data and digital transformation to increase incent prevention. The data in this research is collected based on journals, books, documents, etc that are related to the topic of this study. The result of this study is that the utilization of digital transformation toward oil and gas industry also enables the oil and gas chain, especially upstream field, utilizes “ℼ-Frame” for the seismic exploration and “Field of the Future” intelligent outfield that can reduce the human’s work that may cause the accidental risk and make the production more efficient, safe and friendly environment, traceable, and transparent.
Techno-functional Properties of Armoured Cricket (Acanthoplus discoidalis) Flour
Authors: K Mugova A. , J Zvidzai C. , R Musundire
Published: June 2022

Acanthoplus discoidalis is an insect that has potential use in new product development because of its nutritional quality. This study focused on function properties of A. discoidalis flour. Protein solubility, bulk density, water and oil holding capacity and foaming and emulsifying properties were determined. Protein solubility values of A. discoidalis protein extract at different temperatures were minimum at pH 5. After sieving of the ground flour, the highest retention yields for both the oven dried and sun dried insect flour were observed at mesh size 150µm thus, 47 % and 45 % respectively. Bulk density ranged from 52.33 to 82.67g/mL. Water holding capacity values ranged from 236 to 183.73g/g. A comparison between the water holding capacity with relation to mesh size revealed that the finer the flour, the lower the water binding capacity. No significant difference (p < 0.05) was observed between water holding capacity of the protein isolate and oven dried A. discoidalis flour ground to 500µm. Oil holding capacity of A. discoidalis flour ranged from 110.57 to 179.67g/g. Significant differences (p < 0.05) for oil holding capacity were observed between air dried and sun dried flour samples. Foaming capacity values of A. discoidalis flour ranged from 4 to 33.83%. Foaming capacity decreased with an increase in mesh size for both the oven dried and sun dried flour samples. No significant difference (p < 0.05) was observed between foaming stability of the protein isolate and that of sun dried flour ground to 300 and 500µm. Emulsion capacity and emulsion stability values ranged from 43.33 to 84.07% and 24.73 to 41.83% respectively. The obtained results could be valuable to industries that would want to take up A. discoidalis in their formulation of improved foods and feeds. Insect flours are rich in protein, good extenders, good thickeners and good gelling agents.
SPEED CONTROL OF DC MOTOR USING PID AND FUZZY LOGIC CONTROLLER
Authors: P.Balaram  , P.Tulasi ram  , D.Akhila  , K.Vamsi
Published: June 2022

In this project, we have designed a DC motor whose speed is controlled by PID controller and Fuzzy logic controller . The Proportional , Integral and Derivative gains are adjusted manually till the appropriate response will obtain. In case of FUZZY, controller is designed according to the all 25 rules for auto-tuning the each parameters. The study shows the comparison between responses of PID and Fuzzy. The ultimate result will be speed control of DC motor using Fuzzy logic controller will precise.
Exploring spatial patterns of overflights at Mount Rushmore National Memorial
Authors: Peterson Brian , Beeco J. , Anderson Sharolyn , Joyce Damon
Published: June 2022

The purpose of this study was to explore the spatial patterns of overflights at Mount Rushmore National Memorial (Mount Rushmore). Overflights were analyzed from August 15th, 2020 to May 15th, 2021 using Automatic Dependent Surveillance-Broadcast (ADS-B) and radar data from L3Harris. The first phase of analysis focused on all overflights and found a high concentration of overflights fly above Mount Rushmore. The second phase of analysis focused on low-level overflights that fly below 9,000ft mean sea level (MSL), which showed that many low-level overflights fly in a ring-shaped pattern around Mount Rushmore. The third phase of analysis removed all overflights known to not be air tours. Point density analysis was conducted using waypoints segmented into 500ft above ground level (AGL) altitude intervals, which showed that the density of overflights varied by altitude interval and the 1,000-1,500ft AGL range had the highest density of overflights around and above Mount Rushmore. This altitude interval also had the highest number of waypoints. It was also determined that the aircraft owners who fly the most helicopter routes fly at mean and median altitudes less than 1,600ft AGL. This information can be used for planning and management purposes and this study serves as a resource for future research that intends to use more advanced analytics.
EMPATHY AND COMPETENCY AS PREDICTORS OF NURSES' JOB PERFORMANCE: AN EMPIRICAL EVIDENCE FROM MALAYSIAN PUBLIC HOSPITALS
Authors: Mohd Nasurdin Aizzat , Tan Cheng Ling , Nazeer Khan Sabrina
Published: June 2022

Nurses act as customer-contact employees who are responsible for providing round-the-clock service to patients. Their empathy and competency skills have a significant impact on the quality of services provided to patients. The purpose of this study is to examine the role of empathy and competency in determining task performance and contextual performance of public hospital nurses in Malaysia. A survey using self-administered questionnaires was used to collect data from a sample of 354 staff nurses working in Malaysian public hospitals. Hypotheses were tested using the partial least square technique. Findings indicated that empathy has a positive relationship with task performance but not with contextual performance. Competency, however, has a positive relationship with task performance and contextual performance respectively. Empathy and competency are essential elements in predicting both task performance and contextual performance. The findings of this study highlighted the importance of empathy and competency in improving job performance among nurses in Malaysian public hospitals.
Analisis Kredit Bermasalah dan Likuiditas Sebelum Pandemi, Selama Pandemi, dan Setelah Vaksinasi Covid-19 Pada Bank Umum Konvensional di Indonesia
Authors: Wahyu Aldi Setiawan  , Sari Andayani
Published: June 2022

Perubahan kondisi akibat pandemi Covid-19 di Indonesia menimbulkan kemelut di seluruh sektor kehidupan masyarakat terutama sektor perbankan. Kinerja perbankan terutama dalam aktivitas penyaluran kredit dapat diketahui melalui tingkat kredit bermasalah dan likuiditas. Tujuan penelitian ini untuk menguji dan menganalisis perbedaan kredit bermasalah dan likuiditas sebelum pandemi, selama pandemi, dan setelah vaksinasi Covid-19 pada bank umum konvensional. Teknik analisis data penelitian menggunakan uji repeated measure ANOVA dan uji friedman yang diolah dengan software pengolah data SPSS versi 23. Hasil olah data penelitian menunjukkan bahwa Non Performing Loan dan Loan to Deposit Ratio bank umum konvensional sebelum pandemi, selama pandemi, dan setelah vaksinasi Covid-19 berbeda secara signifikan.
Biegedrillknicknachweise bei einfachsymmetrischen I-Querschnitten gemäß prEN 1993–1–1:2020/Out-of-plane buckling resistance of members with monosymmetric I-section according to prEN 1993–1–1:2020
Authors: Hajdú Gábor , Rubert Achim
Published: June 2022

Dieser Aufsatz behandelt mögliche Tragfähigkeitsnachweise nach prEN 1993–1–1:2020 von mit Normalkraft und Biegemomenten beanspruchten Trägern mit einfachsymmetrischen I-Querschnitten. Das Stabilitätsverhalten bei einfachsymmetrischen I-Profilen unterscheidet sich zu symmetrischen Querschnitten, weil der Abstand zwischen Schubmittel- und Schwerpunkt zusätzliche Biegemomente und Bimomente nach Theorie 2. Ordnung verursacht.

 

Es wird ein Vergleich der Interaktionsmethode (auch als Nachweis mit Abminderungsfaktoren bezeichnet), der Allgemeinen Methode und der Globalen Imperfektionsmethode sowie deren Nachweisresultate gezeigt. Zum Nachweis der Genauigkeit wurden eigene geometrisch und materiell nicht-lineare Berechnungen unter Ansatz von individuell kalibrierten Imperfektionen (auch mit GMNIA bezeichnet) durchgeführt. Die parametrischen Studien ergaben für die drei Methoden vergleichbare Sicherheitsniveaus.
Die unwiderstehliche Anziehungskraft des Bösen: Zur Teufelsdarstellung in Jeremias Gotthelfs Die schwarze Spinne
Authors: AYDIN Yıldız
Published: June 2022

In seiner Erzählung Die schwarze Spinne stellt der schweizerische Schriftsteller Jeremias Gotthelf (1797-1854) das Böse als Erscheinung einer schwarzen Spinne dar, die eine furchtbare Katastrophe auslöst und Menschen, Tiere und die Natur auf grausame Weise vernichtet. Trotz der Veröffentlichung im Jahre 1842 findet dieses Werk erst Anfang des 20. Jahrhunderts Beachtung, von dem Schriftsteller wie Thomas Mann, Erich Kästner oder Elias Canetti fasziniert waren.
Das Böse erscheint in diesem Werk in unterschiedlichen Varianten, doch gehört die Teufelsdarstellung zu den interessantesten Gestalten, die offensichtlich aus unterschiedlichen Quellen entnommen wurde. In diesem Sinne erweist sich die unwiderstehliche Anziehungskraft des Bösen durch die Imagination des Teufels, die teilweise übernommen, erweitert, organisiert und strukturiert und schließlich in einen sinnvollen Text zusammengefügt wird.
Ziel der vorliegenden Arbeit ist es, das Böse in Jeremias Gotthelfs Die schwarze Spinne, das sich in der Teufelsgestalt widerspiegelt, als eine ästhetische Kategorie zu betrachten, die die künstlerische Vorstellungskraft anregt und nährt.
Rapid gas–liquid reaction in flow. Continuous synthesis and production of cyclohexene oxide
Authors: Mandai Kyoko , Yamamoto Tetsuya , Mandai Hiroki , Nagaki Aiichiro
Published: June 2022

The enhanced reaction rate in the epoxidation of cyclohexene with air as an oxidant was discovered without any added catalyst utilizing a continuous flow reactor constructed with readily available stainless steel parts and devices. This continuous-flow process demonstrates a significant improvement in reaction time for highly selective epoxide production over the batch process due to the efficient mass transfer between the liquid phase and air. The flow process discovered was operated continuously with good operational stability, evaluated by a constant high yield of cyclohexene oxide, to obtain the desired product with high productivity.
Локальні властивості цілих функцій обмеженого індексу за змінним напрямком (репером)
Authors: Bandura A. I. , Skaskiv O. B.
Published: June 2022

УДК 517.555
Розширено поняття цілої функції обмеженого індексу за змінним напрямком на випадок, коли змінний напрямок -неперервна векторно-значна функція. Попередні дослідження цього класу функцій містили обмеження, що змінний напрямок — ціла векторно-значна функція.Ціла функція

F
:

ℂ
n

→
ℂ

називається функцією обмеженого індексу за змінним напрямком (репером)

b

(
z
)

, якщо існує

m
0

∈

ℤ
+

таке, що для кожного

m
∈

ℤ
+

, всіх

z
∈

ℂ
n

та всіх

t
∈
ℂ

виконується

|

∂

b

(
z
)

m

F

(
z
+
t
b
(
z
)
)

|

m
!

≤

max

0
≤
k
≤

m
0

|

∂

b

(
z
)

k

F

(
z
+
t
b
(
z
)
)

|

k
!

,

де

∂

b

(
z
)

0

F

(
z
+
t
b
(
z
)
)

=
F

(
z
+
t
b
(
z
)
)

,

∂

b

(
z
)

k

F

(
z
+
t
b
(
z
)
)

:
=

k
!

2
π
i

∫

|
τ
|
=
r

F

(
z
+
t
b
(
z
)
+
τ
b
(
z
)
)

τ

k
+
1

ⅆ
τ

та

b
:

ℂ
n

→

ℂ
n

— векторно-значна неперервна функція.У статті наведено дослідження деяких властивостей цих функцій. Отримані результати — аналоги тверджень, відомих для цілих функцій обмеженого індексу за фіксованим напрямком. Вони описують локальне поводження модуля

∂

b

(
z
)

k

F

(
z
+
t
b
+
τ
b
(
z
)
)

на колі

|
τ
|
=
η

. Знайдено деякі оцінки цього виразу через значення  

∂

b

(
z
)

k

F

(
z
+
t
b
)

.
Наближення класів

W

β
,
∞

r

узагальненими інтегралами Абеля – Пуассона
Authors: Kal'chuk I. V. , Kharkevych Yu. I.
Published: June 2022

УДК 517.5
У роботі проведено дослідження апроксимативних властивостей узагальнених інтегралів Абеля-Пуассона

P
γ

(
δ
)

,0
<
γ
≤
2
,

на класах Вейля-Надя

W

β
,
∞

r

у випадку

0
<
r
≤
γ

в рівномірній метриці.
The First High-contrast Images of X-Ray Binaries: Detection of Candidate Companions in the γ Cas Analog RX J1744.7-2713
Authors: Prasow-Émond M. , Hlavacek-Larrondo J. , Fogarty K. , Rameau J. , Guité L.-S. , Mawet D. , Gandhi P. , Rao A. , Steiner J. F. , Artigau É. , Lafrenière D. , Fabian A. C. , Walton D. J. , Weiss L. M. , Doyon R. , Ren 任彬 B. B. , Rhea C. L. , Bégin T. , Vigneron B. , Naud M.-E.
Published: June 2022

X-ray binaries provide exceptional laboratories for understanding the physics of matter under the most extreme conditions. Until recently, there were few, if any, observational constraints on the circumbinary environments of X-ray binaries at ∼100–5000 au scales. It remains unclear how the accretion onto the compact objects or the explosions giving rise to the compact objects interact with their immediate surroundings. Here, we present the first high-contrast adaptive optics images of X-ray binaries. These observations target all X-ray binaries within ∼3 kpc accessible with the Keck/NIRC2 vortex coronagraph. This paper focuses on one of the first key results from this campaign; our images reveal the presence of 21 sources potentially associated with the γ Cassiopeiae analog high-mass X-ray binary RX J1744.7−2713. By conducting different analyses—a preliminary proper motion analysis, a color–magnitude diagram, and a probability of chance alignment calculation—we found that three of these 21 sources have a high probability of being bound to the system. If confirmed, they would be in wide orbits (∼450 to 2500 au). While follow-up astrometric observations will be needed in ∼5–10 yr to confirm further the bound nature of these detections, these discoveries emphasize that such observations may provide a major breakthrough in the field. In fact, they would be useful not only for our understanding of stellar multiplicity, but also for our understanding of how planets, brown dwarfs, and stars can form even in the most extreme environments.
Incorporating Measurement Error in Astronomical Object Classification
Authors: Shy Sarah , Tak Hyungsuk , Feigelson Eric D. , Timlin John D. , Babu G. Jogesh
Published: June 2022

Most general-purpose classification methods, such as support-vector machine (SVM) and random forest (RF), fail to account for an unusual characteristic of astronomical data: known measurement error uncertainties. In astronomical data, this information is often given in the data but discarded because popular machine learning classifiers cannot incorporate it. We propose a simulation-based approach that incorporates heteroscedastic measurement error into an existing classification method to better quantify uncertainty in classification. The proposed method first simulates perturbed realizations of the data from a Bayesian posterior predictive distribution of a Gaussian measurement error model. Then, a chosen classifier is fit to each simulation. The variation across the simulations naturally reflects the uncertainty propagated from the measurement errors in both labeled and unlabeled data sets. We demonstrate the use of this approach via two numerical studies. The first is a thorough simulation study applying the proposed procedure to SVM and RF, which are well-known hard and soft classifiers, respectively. The second study is a realistic classification problem of identifying high-z (2.9 ≤ z ≤ 5.1) quasar candidates from photometric data. The data are from merged catalogs of the Sloan Digital Sky Survey, the Spitzer IRAC Equatorial Survey, and the Spitzer-HETDEX Exploratory Large-Area Survey. The proposed approach reveals that out of 11,847 high-z quasar candidates identified by a random forest without incorporating measurement error, 3146 are potential misclassifications with measurement error. Additionally, out of 1.85 million objects not identified as high-z quasars without measurement error, 936 can be considered new candidates with measurement error.
Characterizing the Advective Hot Flows of Nova-like Cataclysmic Variables in the X-Rays: The Case of BZ Cam and V592 Cas
Authors: Balman Şölen , Schlegel Eric M. , Godon Patrick
Published: June 2022

We present a joint spectral analysis of ROSAT PSPC, Swift X-ray Telescope, and Nuclear Spectroscopic Telescope Array Focal Plane Module A/B (FPMA/B) data of the nova-like (NL) cataclysmic variables (CVs) BZ Cam and V592 Cas in the 0.1–78.0 keV band. Plasma models of collisional equilibrium fail to model the 6.0–7.0 iron line complex and continuum with

χ

ν

2

larger than 2.0. Our results show nonequilibrium ionization (NEI) conditions in the X-ray plasma with temperatures of 8.2–9.4 keV and 10.0–12.9 keV for BZ Cam and V592 Cas, respectively. The centroids of He-like and H-like iron ionization lines are not at their equilibrium values as expected from NEI conditions. We find power-law spectral components that reveal the existence of scattering and Comptonization with a photon index of 1.50–1.87. We detect a P Cygni profile in the H-like iron line of BZ Cam translating to outflows of 4500–8700 km s−1 consistent with the fast winds in the optical and UV. This is the first time such a fast collimated outflow is detected in the X-rays from an accreting CV. An iron Kα line around 6.2–6.5 keV is found revealing the existence of reflection effects in both sources. We study the broadband noise and find that the optically thick disk truncates in BZ Cam and V592 Cas consistent with transition to an advective hot flow structure. V592 Cas also exhibits a quasiperiodic oscillation at

1.4

−
0.3

+
2.6

mHz. In general, we find that the two NLs portray spectral and noise characteristics as expected from advective hot accretion flows at low radiative efficiency.
How Binaries Accrete: Hydrodynamic Simulations with Passive Tracer Particles
Authors: Tiede Christopher , Zrake Jonathan , MacFadyen Andrew , Haiman Zoltán
Published: June 2022

Linear analysis of gas flows around orbiting binaries suggests that a centrifugal barrier ought to clear a low-density cavity around the binary and inhibit mass transfer onto it. Modern hydrodynamics simulations have confirmed the low-density cavity, but show that any mass flowing from large scales into the circumbinary disk is eventually transferred onto the binary components. Even though many numerical studies confirm this picture, it is still not understood precisely how gas parcels overcome the centrifugal barrier and ultimately accrete. We present a detailed analysis of the binary accretion process, using an accurate prescription for evolving grid-based hydrodynamics with Lagrangian tracer particles that track the trajectories of individual gas parcels. We find that binary accretion can be described in four phases: (1) gas is viscously transported through the circumbinary disk up to the centrifugal barrier at the cavity wall, (2) the cavity wall is tidally distorted into accretion streams consisting of near-ballistic gas parcels on eccentric orbits, (3) the portion of each stream moving inwards of an accretion horizon radius

r

¯

≃
a

—the radius beyond which no material is returned to the cavity wall—becomes bound to a minidisk orbiting an individual binary component, and (4) the minidisk gas accretes onto the binary component through the combined effect of viscous and tidal stresses.
Optical Light Curve of 4FGL J0935.3+0901: A Flaring Black Widow Candidate
Authors: Halpern Jules P.
Published: June 2022

I obtained time-series photometry of the compact binary candidate for the Fermi source 4FGL J0935.3+0901. Superposed on the 2.44 hr orbital modulation are day-to-day variations and frequent flaring as seen in several redback and black widow millisecond pulsars (MSPs). The short orbital period favors a black widow. While the modulation of ≤1 mag is smaller than that of most black widows, it could indicate a low orbital inclination. Although a published optical spectrum shows strong emission lines, the light curve evinces pulsar heating of the companion star rather than accretion-disk emission of a transitional MSP. Emission lines and flaring occur in the same objects, probably powered by shocks between the relativistic pulsar wind and a wind driven off the companion star. I also recovered the period in photometry from the Zwicky Transient Facility (ZTF). A phase-connected ephemeris derived from MDM Observatory and ZTF data spanning 4 yr yields a period of 0.10153276(36) days and an epoch for the ascending node of the putative pulsar.
From Theoretical Debates to Lived Experiences: Autoethnographic Insights on Open Educational Practices in German Higher Education
Authors: Fahrer Sigrid , Heck Tamara , Röwert Ronny , Truan Naomi
Published: June 2022

The Open Science Fellow Program offered a community where researchers learned to work openly. Within this environment, questions came up on how to teach openly, i.e. which practices stand for open learning and teaching and which proven examples can be shared amongst colleagues and peers? Different concepts of open educational practices aim at giving answers to open learning and teaching. However, open educational practices still lack a common definition and many discussions on the topic only give minimal or implicit guidance to concrete approaches of being open - despite the creation and sharing of open educational resources.

Investigating how we, practitioners, implement concepts of open educational practices in the classroom was the activator for the autoethnographic study we describe in this paper. Starting from a literature search to seek evidence of explicit concepts of OEP, we reflected those concepts with regard to their adaptation in our own teaching and our experiences with OER-based and other teaching concepts. The paper discusses four investigated research papers that each were reflected by the four authors - practitioners in higher education in Germany. It summarizes the main findings to draw conclusion on the current state of ideas of open educational practices and their practical adaptation and implementation in learning and teaching scenarios.
Taxonomic revision of the African and Southwest Asian species of Platyderus Stephens, subg. Eremoderus Jeanne (Coleoptera, Carabidae, Sphodrini)
Authors: Guéorguiev Borislav , Wrase David W. , Assmann Thorsten , Muilwijk Jan , Machard Patrice
Published: June 2022

Species of the subgenus Eremoderus Jeanne, 1996, genus Platyderus Stephens, 1827, occurring in continental Africa (excluding Macaronesia) and southwest Asia, are taxonomically revised. The following new species groups and species are defined and described, “weiratheri” group: Platyderus (Eremoderus) chatzakiae, sp. nov. (type locality: Greece, Kalymnos Island, near Stimenia Village); “iranicus-vanensis” group: Platyderus (Eremoderus) felixi, sp. nov. (type locality: Iran, Chahar Mahal va Bakhtiari Province, 10 km west of Naghan Town); Platyderus (Eremoderus) iranicus, sp. nov. (type locality: Iran, Chahar Mahal va Bakhtiari Province, 7 km NE Naghan Town); Platyderus (Eremoderus) vanensis, sp. nov. (type locality: Turkey, Van Province, Gevaş Town); Platyderus (Eremoderus) vrabeci, sp. nov. (type locality: Turkey, Nemrut Daği); “lassallei” group: Platyderus (Eremoderus) lassallei, sp. nov. (type locality: Iran, Mazandaran Province, between Nur City and Lavij Village); “davatchii” group: Platyderus (Eremoderus) klapperichi, sp. nov. (type locality: Iran, Mazandaran Province, Damavand, 2000 m); “afghanistanicus” group: Platyderus (Eremoderus) afghanistanicus, sp. nov. (type locality: Afghanistan, “Habatah”); “languidus” group: Platyderus (Eremoderus) arabicus, sp. nov. (type locality: Saudi Arabia, “Hedjaz”); Platyderus (Eremoderus) brunki, sp. nov. (type locality: Republic of Yemen, Thula District, between Kaukaban and Shibam); Platyderus (Eremoderus) irakensis, sp. nov. (type locality: Iraq, Ar Rutba District, 115 km E Ar-Rutbah Town); Platyderus (Eremoderus) jordanensis, sp. nov. (type locality: Jordan, Al-Betrā’ District, Little Petra). Six previously described species — P. brunneus Karsch, P. insignitus Bedel, P. languidus Reiche & Saulcy, P. ledouxi Morvan, P. taghizadehi Morvan, and P. weiratheri Mařan — are redescribed based on type and/or non-type material. P. davatchii Morvan placed as a member of the subgenus was not treated due to the lack of material available for study. The following new nomenclature acts are proposed: Platyderus brunneus Karsch, 1881, stat. rev., is removed from synonymy with Feronia languida Reiche & Saulcy, 1855; Platyderus elegans Bedel, 1900, syn. nov., is proposed as junior synonym of Platyderus brunneus Karsch, 1881; Platyderus ferrantei Reitter, 1909 is proposed as subspecies Platyderus brunneus ferrantei Reitter, 1909, stat. nov. In order to preserve the stability of nomenclature, lectotypes are designated for: Feronia languida Reiche & Saulcy, Platyderus brunneus Karsch, and Platyderus weiratheri Mařan. Keys to identification of the male and female specimens of the species from the regions studied are provided.
Polypleurum chinense (Podostemaceae), a new species from Fujian, China, based on morphological and genomic evidence
Authors: Chen Bing-Hua , Zhang Miao , Zhao Kai , Zhang Xiao-Hui , Ge Chang-Li
Published: June 2022

We describe Polypleurum chinense, a new species of Podostemaceae from Yunxiao County, Fujian Province, China, based on morphological and molecular data and the genus Polypleurum is recorded here for the first time from China. Polypleurum chinense has a gross morphology similar to P. longistylosum, but it can be distinguished from the latter by its narrower roots, more numerous and longer leaves, shorter stigmas and more numerous ovules per locule. To distinguish the new Polypleurum species and study its phylogenetic position, its complete plastome was sequenced and characterised. The plastome is 132,110 bp in length, including a pair of inverted repeat regions (IRs) of 20,389 bp divided by the large single-copy (LSC) and small single-copy (SSC) regions of 79,022 bp and 12,310 bp, respectively. The plastome size of P. chinense is relatively smaller compared to most angiosperms due to the absence of the ycf1 and ycf2 genes in the IR regions. The phylogenetic analyses also strongly support the separation of the new species from other taxa.
Essai d’une phénoménologie de la franchise
Authors: Ayache Magali , Dumez Hervé
Published: June 2022

La franchise est une relation économique entre deux acteurs indépendants, le franchiseur et le franchisé. À ce titre, elle se prête bien à l’application de modèles économiques (théorie de l’agence, théorie des contrats incomplets, coûts de transaction, etc.) ou gestionnaires (théorie des parties prenantes, empowerment , gestion de la créativité, etc.). Mais Dant (2008 ; Dant et al. , 2011) a fait remarquer que l’on manquait d’une véritable phénoménologie de cette relation complexe. Cet article tente de produire cette phénoménologie sous la forme d’un étagement ordonné de descriptions : une description minimale (une relation économique entre deux agents qui chacun y trouvent son intérêt), puis des éléments de complexification (une relation économique déséquilibrée, autre qu’économique, multi-niveau, en réseau, agonistique). Enfin sont identifiés les scénarios dynamiques de la relation de franchise.
La gouvernance territoriale de l’innovation digitale dans le secteur patrimonial : les enseignements d’une recherche-action
Authors: Gatelier Elsa , Suquet Jean-Baptiste
Published: June 2022

Les technologies numériques constituent une opportunité, pour les sites touristiques patrimoniaux, de significativement améliorer l’expérience de visite et de dynamiser l’économie de leurs territoires. Mais cette opportunité technologique se heurte aux difficultés du secteur à innover, notamment du fait de la taille modeste de très nombreux sites. La littérature en innovation touristique préconise généralement de favoriser l’innovation via un système d’innovation qui rassemble une pluralité d’acteurs à une échelle élargie, permettant ainsi de dépasser le handicap de taille des organisations patrimoniales. Nous proposons avec cet article d’approfondir cette préconisation en montrant, à l’aide des travaux en économie territoriale, les enjeux de gouvernance territoriale inhérents à cette démarche. L’analyse du déroulement d’un projet européen d’innovation digitale dans le secteur patrimonial met en évidence la tension récurrente entre les aspects « génériques » et « spécifiques », et la nécessité pour les acteurs d’inventer des pratiques de coordination au niveau méso du projet. L’article met en lumière une problématique fondamentale de gouvernance territoriale des projets d’innovation dans le secteur patrimonial, et souligne en particulier l’importance de pratiques de coordination permettant l’apprentissage et la mise en relation des acteurs au sein du projet.
Plutôt un ou deux ripeurs derrière le camion-poubelle ? Quand la réalité du travailleur brise le rêve du gestionnaire
Authors: Salmon Isabelle , Juban Jean-Yves , Abord de Chatillon Emmanuel
Published: June 2022

Le concept de gestion des âges se révèle impuissant à lutter contre l’exclusion des salariés vieillissants du marché du travail, notamment pour raison de santé. C’est en nous interrogeant sur une nouvelle idée, la gestion de l’employabilité et des parcours par la santé au travail, que nous avons abordé cette question dans le cadre d’un travail de recherche ancré sur le terrain de la collecte des déchets. Il s’agit d’étudier les conséquences sur les conditions du travail d’une décision « gestionnaire » : le passage d’équipes de deux salariés de la collecte d’ordures ménagères (ou « ripeurs ») à un seul. Nous bénéficions d’une opportunité consistant à enrichir l’approche gestionnaire par l’apport d’un physiologiste et d’une ergonome. Cette approche pluridisciplinaire peu courante nous permet de confronter la tentation gestionnaire d’optimisation rationnelle des coûts à la matérialité de ses conséquences sur les conditions de travail, et même sur la santé des ripeurs. L’exposé de ces résultats amène alors le gestionnaire donneur d’ordres, l’espace d’un appel d’offres, à se changer en préventeur, prouvant que les deux mondes, celui du gestionnaire et celui du préventeur, ne sont pas étanches.
Paris-São Paulo par la Société Générale : les chemins (de fer) de l’épargne française (1906-1918)
Authors: Ouriemmi Oussama
Published: June 2022

Au tournant du XX e  siècle, l’épargne française est impliquée dans des investissements aventuriers présentés au public par les banques. Le cas de la Brazil Railway est à cet égard édifiant. Introduite sur le marché français par la Société Générale et ses partenaires, la compagnie collecte en quelques années d’énormes sommes d’argent. Celles-ci sont rapidement mises en danger du fait des desseins gigantesques de son management. Le présent article met en lumière les risques subis par l’épargne française, et les pratiques managériales et financières qui les portent.
Actualiser l’ Encyclopédie de Diderot et d’Alembert au XIX e siècle : le Grand Dictionnaire universel (1866-1890) et La Grande Encyclopédie (1885-1902)
Authors: Jacquet-Pfau Christine
Published: June 2022

Monuments lexicographiques de la seconde moitié du xix e  siècle, Le Grand Dictionnaire universel du xix e  siècle de Larousse et La Grande Encyclopédie sous la direction de Berthelot et al. s’inscrivent explicitement dans l’actualisation de l’ Encyclopédie de Diderot et d’Alembert. Si cette filiation permet d’observer des constantes dans les discours encyclopédiques qu’ils développent, leur projet éditorial, leur méthodologie et les descriptions mises en œuvre révèlent des motivations et des procédés lexicographiques différents. En un demi-siècle, la dynamique encyclopédique s’est modifiée, en partie sous l’influence du positivisme, notamment en s’adaptant à la nécessité d’exposer des connaissances scientifiques qui se spécialisaient de plus en plus vite (émergence de la terminologie) et qui s’adressaient à un public de plus en plus large (importance de la vulgarisation).
Libéraliser l'économie agricole européenne. Une analyse polanyienne
Authors: Pinaud Samuel
Published: June 2022

L’article emprunte à l’analyse polanyienne des formes de commerce pour étudier les transformations du commerce européen des produits laitiers depuis les années 1960. Il se centre sur la transformation conjointe des outils publics de régulation et des pratiques économiques sous-jacentes pour analyser le rôle joué par les négociant·es dans le processus d’encastrement et de désencastrement de l’économie laitière européenne. L’attention aux pratiques commerciales permet de mettre au jour certaines fragilités du processus de désencastrement politique de l’économie à l’œuvre depuis les réformes de la politique agricole commune des années 1990.
Le désencastrement politique de l’économie : l’institutionnalisation de l’informalité comme une catégorie d’intervention publique au Pérou
Authors: Morenas Arthur
Published: June 2022

La question informelle a pris une centralité nouvelle au Pérou au cours des années 1980. Faire porter le regard sur l’institutionnalisation de l’informalité comme une catégorie d’intervention publique permet de saisir les fondements sociaux et professionnels de tentatives de désencastrement politique de l’économie. Illustrant le poids croissant de l’économie dans les campagnes politiques, l’investissement scientifico-politique de la question informelle se traduit concrètement par un cadrage nouveau, essentiellement économique, d’enjeux sociaux plus larges.
Accumulation du capital et cycles de l’économie chinoise de 1952 à 2014
Authors: Herrera Rémy , Long Zhiming
Published: June 2022

Sur la base d’une définition aussi rigoureuse que possible du périmètre du secteur industriel, et de la construction de stocks d’actifs fixes d’entreprises et de capital physique productif, nous calculons des indicateurs de taux de profit au niveau de la comptabilité d’entreprises et de la comptabilité nationale pour la Chine de 1952 à 2014. Les résultats obtenus selon ces deux approches sont assez similaires et peuvent être synthétisés comme suit : i) une baisse tendancielle du taux de profit est observable sur la longue période, et ce pour les deux niveaux d’analyse. ii) Les fluctuations de court terme de taux de profit font apparaître, à l’échelle macroéconomique, une succession de cycles, rarement complets, dont l’amplitude se réduit avec le temps. iii) Plus d’un tiers de la période couverte est concernée par des années récessives pour la composante cyclique du taux de profit ; les plus forts reculs étant enregistrés, par ordre décroissant, après la rupture entre la Chine et l’Union soviétique (1961-1963), au moment de la Révolution culturelle (1968), dans le courant des années 1950, lors de la transition post-Mao (1976-1977), après les événements de Tian’anmen (1989-91), et enfin avec la diffusion des crises de la mondialisation (qui ont touché la Chine en 1998, 2001, 2009, et à nouveau depuis 2012).
L’octroi de crédit bancaire aux PME françaises depuis les réformes de Bâle. Sociologie d’une évaluation
Authors: Serve Stéphanie
Published: June 2022

L’objectif de ce travail est de comprendre comment se construit l’offre de crédit bancaire aux PME dix ans après l’entrée en vigueur des réformes dites de Bâle II. Nous nous questionnons sur la persistance d’une évaluation socialement encastrée des risques dans cet environnement financiarisé. Notre enquête montre comment les acteurs valorisent le risque de crédit par des calculs au sens de Callon et Muniesa [2003] sur les différents segments de la chaîne modelés par la structure organisationnelle de la banque. Elle met en lumière que cette évaluation du risque n’a pas pour seul objectif de le réduire, mais fait intervenir des critères moraux et des logiques d’encastrement. Le résultat de ces calculs économiques influe sur la distribution du crédit aux PME.