bluuebunny/crossref_metadata_2025 huggingface dataset:
Physical Properties of the Host Galaxies of Ca-rich Transients
Authors: Dong 董 Yuxin 雨欣 , Milisavljevic Dan , Leja Joel , Sarbadhicary Sumit K. , Nugent Anya E. , Margutti Raffaella , Jacobson-Galán Wynn V. , Polin Abigail , Banovetz John , Reynolds Jack M. , Subrayan Bhagya
Published: March 2022

Calcium-rich (Ca-rich) transients are a new class of supernovae (SNe) that are known for their comparatively rapid evolution, modest peak luminosities, and strong nebular calcium emission lines. Currently, the progenitor systems of Ca-rich transients remain unknown. Although they exhibit spectroscopic properties not unlike core-collapse Type Ib/c SNe, nearly half are found in the outskirts of their host galaxies, which are predominantly elliptical, suggesting a closer connection to the older stellar populations of SNe Ia. In this paper, we present a compilation of publicly available multiwavelength observations of all known and/or suspected host galaxies of Ca-rich transients ranging from far-UV to IR, and use these data to characterize their stellar populations with prospector. We estimate several galaxy parameters including integrated star formation rate, stellar mass, metallicity, and age. For nine host galaxies, the observations are sensitive enough to obtain nonparametric star formation histories, from which we recover SN rates and estimate probabilities that the Ca-rich transients in each of these host galaxies originated from a core-collapse versus Type Ia-like explosion. Our work supports the notion that the population of Ca-rich transients do not come exclusively from core-collapse explosions, and must either be only from white dwarf stars or a mixed population of white dwarf stars with other channels, potentially including massive star explosions. Additional photometry and explosion site spectroscopy of larger samples of Ca-rich host galaxies will improve these estimates and better constrain the ratio of white dwarf versus massive star progenitors of Ca-rich transients.
A Census of 163 Large-scale (≥10 pc), Velocity-coherent Filaments in the Inner Galactic Plane: Physical Properties, Dense-gas Fraction, and Association with Spiral Arms
Authors: Ge Yifei , Wang Ke
Published: March 2022

The interstellar medium has a highly filamentary and hierarchical structure that may play a significant role in star formation. A systematical study of the large-scale filaments toward their physical parameters, distribution, structures, and kinematics will inform us about which types of filaments have the potential to form stars, how the material feeds protostars through filaments, and the connection between star formation and Galactic spiral arms. Unlike the traditional by-eye searches, we use a customized minimum spanning tree algorithm to identify filaments by linking Galactic clumps from the APEX Telescope Large Area Survey of the Galaxy catalog. In the inner Galactic plane (∣l∣ < 60°), we identify 163 large-scale filaments with physical properties derived, including the dense-gas mass fraction, and we compare them with an updated spiral arm model in position–position–velocity space. The dense-gas mass fraction is found not to differ significantly in various Galactic positions or in different spiral arms. We also find that most filaments are interarm filaments after adding a distance constraint, and filaments in arms differ a little with those not in arms. One surprising result is that clumps on and off filaments have no significant distinction in their mass at the same size.
Spin Evolution of Stellar-mass Black Holes Embedded in AGN Disks: Orbital Eccentricity Produces Retrograde Circumstellar Flows
Authors: Li 李 Ya-Ping 亚平 , Chen 陈 Yi-Xian 逸贤 , Lin 林 Douglas N. C. 潮 , Wang 王 Zhuoxiao 卓骁
Published: March 2022

The spin evolution of stellar-mass black holes (sBHs) embedded in AGN accretion disks is an important process relevant to the production of gravitational waves from binary BH (BBH) merger events through the AGN channel. Because embedded sBHs are surrounded by circumstellar disks (CSDs), the rotation of CSD gas flows determines the direction of the angular momentum it accretes. In this Letter, we use global 2D hydrodynamic simulations to show that while a disk-embedded sBH on a circular orbit transforms the initial retrograde Keplerian shear of the background accretion disk into a prograde CSD flow, as in the classical picture of companion-disk interaction theory, moderate orbital eccentricity could disrupt the steady-state tidal perturbation and preserve a retrograde CSD flow around the sBH. This switch in CSD orientation occurs at a transition eccentricity that scales nearly proportional to the local sound speed. This bifurcation in the CSD flow and thereafter spin-up direction of SBHs leads to the formation of a population of nearly antialigned sBHs and should be incorporated in future population models of sBH and BBH evolutions.
Analysis of a JWST NIRSpec Lab Time Series: Characterizing Systematics, Recovering Exoplanet Transit Spectroscopy, and Constraining a Noise Floor
Authors: Rustamkulov Zafar , Sing David K. , Liu Rongrong , Wang Ashley
Published: March 2022

The James Webb Space Telescope’s (JWST) NIRSpec instrument will unveil the nature of exoplanet atmospheres across the wealth of planet types, from temperate terrestrial worlds to ultrahot Jupiters. In particular, the 0.6–5.3 μm PRISM mode is especially well suited for efficient spectroscopic exoplanet observations spanning a number of important spectral features. We analyze a lab-measured NIRSpec PRISM mode Bright Object Time Series observation from the perspective of a JWST user to understand the instrument performance and detector properties. We create two realistic transiting exoplanet time-series observations by performing injection-recovery tests on the lab-measured data to quantify the effects of real instrument jitter, drift, intrapixel sensitivity variations, and 1/f noise on measured transmission spectra. By fitting the time-series systematics simultaneously with the injected transit, we can obtain more realistic transit-depth uncertainties that take into account noise sources that are currently not modeled by traditional exposure time calculators. We find that sources of systematic noise related to intrapixel sensitivity variations and point-spread function motions are apparent in the data at the level of a few hundred ppm but can be effectively detrended using a low-order polynomial with detector position. We recover the injected spectral features of GJ 436 b and TRAPPIST-1 d and place a 3σ upper limit on the detector noise floor of 14 ppm. We find that the noise floor is consistent with <10 ppm at the 1.7σ level, which bodes well for future observations of challenging targets with faint atmospheric signatures.
The Local Group Mass in the Light of Gaia
Authors: Benisty David , Vasiliev Eugene , Evans N. Wyn , Davis Anne-Christine , Hartl Odelia V. , Strigari Louis E.
Published: March 2022

High-accuracy proper motions (PMs) of M31 and other Local Group (LG) satellites have now been provided by the Gaia satellite. We revisit the timing argument to compute the total mass M of the LG from the orbit of the Milky Way and M31, allowing for the cosmological constant. We rectify a systematic effect caused by the presence of the Large Magellanic Cloud (LMC). The interaction of the LMC with the Milky Way induces a motion toward the LMC. This contribution to the measured velocity of approach of the Milky Way and M31 must be removed. We allow for cosmic bias and scatter by extracting correction factors tailored to the accretion history of the LG. The distribution of correction factors is centered around 0.63 with a scatter of ±0.2, indicating that the timing argument significantly overestimates the true mass. Adjusting for all these effects, the estimated mass of the LG is

M
=

3.4

−
1.1

+
1.4

×

10

12

M

⊙

(68% CL) when using the M31 tangential velocity,

v

tan

=

82

−
35

+
38

km

s

−
1

. Lower tangential velocity models with

v

tan

=

59

−
38

+
42

km

s

−
1

(derived from the same PM data with a flat prior on the tangential velocity) lead to an estimated mass of

M
=

3.1

−
1.0

+
1.3

×

10

12

M

⊙

(68% CL). By making an inventory of the total mass associated with the four most substantial LG members (the Milky Way, M31, M33, and the LMC), we estimate the known mass to be in the range

3.7

−
0.5

+
0.5

×

10

12

M

⊙

.
The Far UV Variability of τ Her (HD 147394) Recorded by IUE
Authors: Monier Richard
Published: March 2022

Evidence is presented that the far-ultraviolet flux of τ Her recorded by the International Ultraviolet Explorer is variable in a series of six spectra taken consecutively over 4 hr and 45 minutes The centroids of the resonance lines of O i, C ii and Si ii are blueshifted in several spectra and resume their original positions over a timescale of 3 hr 5 minutes. The FUV flux also varies over the same timescale. The far-ultraviolet variability is discussed in light of the recent TESS lightcurve observed for τ Her.
Long-term outcomes of low-dose radiotherapy in Kasabach-Merritt syndrome
Authors: Kim Dowook , Choi Jung Yoon , Hong Kyung Taek , Kang Hyoung Jin , Kim Il Han , Lee Joo Ho
Published: March 2022

Purpose: Reports on results of radiation therapy (RT) for Kasabach-Merritt syndrome (KMS) are limited. We performed a retrospective study to evaluate the response rates and late complications and to determine the adequate RT dose for patients with KMS patients.Materials and Methods: We studied 11 patients who received RT between October 1988 and September 2008 for KMS refractory to pharmacologic therapy. All patients had external hemangiomas and received the diagnosis of KMS within 12 months of birth. All 11 patients received steroids as the first-line therapy; eight patients additionally received interferon-α therapy, and one patient underwent surgery. Nine patients underwent single-course RT with a total dose of 4.5–8 Gy (1.5–2 Gy/fraction). Two patients received multiple courses of RT, with a cumulative total dose of 12 Gy (2 Gy/fraction) and 18Gy (1.5 Gy/fraction), respectively.Results: The median follow-up period was 156 months (interquartile range [IQR], 75 to 226 months). The median total dose of RT was 6 Gy, and all patients maintained complete remission until the last follow-up. An additional course of RT was performed for refractory cases or cases of local relapse after initial RT. Rapid platelet count increase after RT was seen in most patients, which returned to normalcy in a median of 20 days (IQR, 5 to 178 days). However, seven patients experienced radiation-related long-term complications.Conclusion: Low-dose RT is effective and yields rapid response in patients with KMS. However, given growth-related late complications, RT should be carefully considered.
Within-Field Mapping of Winter Wheat Biophysical Variables Using Multispectral Images from UAV
Authors: Jelev Georgi , Dimitrov Petar , Roumenina Eugenia
Published: March 2022

The paper presents the results from a study aiming to map the dynamic of biophysical variables of winter wheat crops in different phenological growth stages (PGSs) using multispectral camera data acquired by Unmanned Aerial Vehicle (UAV). The studied biophysical variables are Leaf Area Index (LAI), fraction of Absorbed Photosynthetically Active Radiation (fAPAR) and fraction of vegetation cover (fCover). During agricultural year 2016/2017, 4 field campaigns (FCs) were carried out in 6 farmer-managed fields sown with two winter wheat varieties. During the FCs, 8 UAV flight missions were accomplished. Linear and exponential regression models were designed and evaluated to derive predictive equations for the biophysical variables of the crops based on a set of vegetation indices (VIs). The best predictor for all biophysical variables was OSAVI (RMSE was 0.90 m2/ m2, 0.07 and 0.08 for LAI, fAPAR, and fCover respectively). The chosen models were used to compose maps of LAI, fAPAR, and fCover of the studied fields. The maps correspond well with the spatial distribution of the values of the respective biophysical variables measured during the respective field campaign.
Design of a Flap for Straight Wing of Unmanned Aerial Vehicle
Authors: Metodiev Konstantin
Published: March 2022

In the paper hereby, design of a single stage Fowler flap is proposed. The flap is meant to increase lifting abilities of a straight wing at low speeds. It is applicable to small-sized remotely controlled unmanned aerial vehicles widely available to hobbyists. The design process included thorough analysis of flow around a wing foil in case of both retracted and deployed flap. To obtain aerodynamic coefficients values at different angles of attack and Reynolds numbers was a primary goal. In addition, a linkage mechanism was developed to make it possible for the flap to move along a complex path. Various plots and charts are depicted thereafter with sole purpose of providing better understanding of the idea.
Aerospace Systems "Aerial Launch" at the Modern Stage
Authors: Penev Pavel , Zagorski Nikolay
Published: March 2022

The need for the emergence and use of aerospace systems (ASS) "Aerial launch" by the leading countries has been formulated. The types of ASS and the types of military space systems are revealed, as well as the connection between them. The functioning and perspective ASS "Aerial launch" with civil and military applications is analyzed. Based on a systematic analysis, a structure of ASS "Aerial launch" for the conditions of the Republic of Bulgaria, its advantages, disadvantages and main properties is proposed. Based on the performed modeling, a scheme of operation of ASS "Aerial launch" and stages of the flight of the MiG-29UB carrier aircraft for launching a nanosatellite (nanosatellites) into orbit in the conditions of our country is proposed.
Recent observations of Dermochelys coriacea (Vandelli, 1761), in the waters of Pacific Panama
Authors: Flores Eric E.
Published: March 2022

The situation of the Eastern Tropical Pacific subpopulation of the leatherback sea turtle (Dermochelys coriacea) is critical due to the drastic declines of nesting females. Evidence of the presence of leatherback sea turtles along the Pacific coast of Panama is anecdotal and is based on the local knowledge of local residents. I present here an uncommon observation of a subadult and an adult D. coriacea in the waters off the coast of Azuero Peninsula in central Panama. These observations indicate the need for intensive surveys along this coast that in part may rely on key local informants to urgently implement conservation efforts for this species.
Townsendia lemhiensis (Asteraceae, Astereae): A narrowly endemic new species from Idaho, USA
Authors: Lee Christopher , Björk Curtis R. , Whitton Jeannette
Published: March 2022

Townsendia lemhiensis (Asteraceae) is described from the Lemhi Valley of east-central Idaho. From a genus with weak intrinsic isolating barriers, T. lemhiensis remains distinct apparently due to apomixis and to its isolation and habitat specialization on spatially limited occurrences of ashy white soils in the Lemhi Valley. Despite similarities to T. spathulata, this new species differs in its persistent pappus, fewer series of phyllaries and sericeous rather than long woolly hairs.
B-GOOD: Giving Beekeeping Guidance by cOmputatiOnal-assisted Decision making
Authors: de Graaf Dirk , Bencsik Martin , De Smet Lina , Neumann Peter , Schoonman Marten , Sousa José Paulo , Topping Christopher , Verbeke Wim , Williams James , van Dooremalen Coby
Published: March 2022

A key to healthy beekeeping is the Health Status Index (HIS) inspired by EFSA’s Healthy-B toolbox which we will make fully operational, with the active collaboration of beekeepers, by facilitating the coordinated and harmonised flow of data from various sources and by testing and validating each component thoroughly. We envisage a stepby-step expansion of participating apiaries, and will eventually cover all EU biogeographic regions. The key to a sustainable beekeeping is a better understanding of its socio-economics, particularly within local value chains, its relationship with bee health and the human-ecosystem equilibrium of the beekeeping sector and to implement these insights into the data processing and decision making. We will fully integrate socio-economic analyses, identify viable business models tailored to different contexts for European beekeeping and determine the carrying capacity of the landscape. In close cooperation with the EU Bee Partnership, an EU-wide bee health and management data platform and affiliated project website will be created to enable sharing of knowledge and learning between scientists and stakeholders within and outside the consortium. We will utilise and further expand the classification of the open source IT-application for digital beekeeping, BEEP, to streamline the flow of data related to beekeeping management, the beehive and its environment (landscape, agricultural practices, weather and climate) from various sources. The dynamic bee health and management data platform will allow us to identify correlative relationships among factors impacting the HSI, assess the risk of emerging pests and predators, and enable beekeepers to develop adaptive management strategies that account for local and EU-wide issues. Reinforcing and establishing, where necessary, new multi-actor networks of collaboration will engender a lasting learning and innovation system to ensure socialecological resilient and sustainable beekeeping.
Integrating Generational Perspectives in Nursing
Authors: Weston Marla
Published: March 2022

Although nurses from four different generations work closely together, tension may occur as the different generational perspectives result in misinterpretation and misunderstanding. Learning to create integrated and collegial relationships with people from different generations is a critical skill for nurses who work in multigenerational teams. This article will begin with a review of the historical perspective of the four generational cohorts currently in the workplace. This review will set a foundation for understanding each generation’s unique set of work and personal values. Then the article will discuss various sources of multigenerational misunderstandings and conclude with a discussion of approaches to strengthen intergenerational work teams. The article will emphasize that learning to appreciate the diverse points of view, leverage the strengths, and value the differences in colleagues from various generations can enable individuals to form creative, adaptable, and cohesive work groups.
La régulation émotionnelle au cœur des relations d’attachement
Authors: Borghini Ayala
Published: March 2022

Au cœur des relations d’attachement, la dimension de sécurité émotionnelle est centrale. Il s’agit de pouvoir explorer, dans le lien à l’autre, sans peur et sans risque de représailles, les émotions qui nous habitent et de grandir de cette expression profondément régulatrice. Dans la relation parent-enfant comme dans la relation thérapeutique, cette dynamique sécurisante, ancrée dans les subtilités des échanges interactifs, autorise l’autonomie grandissante, source d’apaisement et de plaisir partagé. L’objectif du présent texte est de revisiter la relation d’attachement à la lumière de ce qu’elle représente en termes de régulation des émotions dans la relation à l’autre. Le calme du parent ainsi que les bases d’orientation qu’il peut donner à l’enfant comme autant de feedbacks informatifs et organisateurs sont au centre de ce processus. Quelques vignettes cliniques viennent illustrer ce point de vue en mettant en évidence comment la théorie de l’attachement peut venir enrichir les prises en charge thérapeutiques.
Attachement et culture
Authors: Bellas Cabane Christine
Published: March 2022

Les notions d’enfance et de normes de maternage ne sont pas les mêmes selon les pays, les milieux sociaux, les normes et croyances en vigueur. Néanmoins la théorie de l’attachement telle que décrite par Bowlby peut s’appliquer dans des sociétés relativement éloignées de celles du monde occidental à condition de prendre en compte le contexte dans lequel évoluent l’enfant, sa mère et les différentes figures d’attachement. Le contexte social, religieux et économique a forcément un impact sur les processus d’attachement de l’enfant (et à l’enfant). Il en est de même du vécu familial et des représentations des enfants, notamment de ceux dits « particuliers » (enfants porteurs de maladies génétiques ou handicap, prématurés, etc.). Dans certains cas, l’attachement peut être difficile, voire entravé, par la peur du devenir de l’enfant que chaque société aborde selon sa réalité, ses convictions et ses possibilités. Les personnels médico-sociaux qui interviennent auprès des familles migrantes sont appelés parfois à se décentrer de leurs normes pour ne pas se méprendre sur certains comportements « étranges » qui, loin de signer un déni de l’enfant et une incapacité à répondre à ses besoins, tendent à le protéger. Ici comme ailleurs, ce ne sont pas les pratiques qui témoignent de l’attachement sécure, ce sont le comportement de l’enfant et la qualité de la relation avec la figure maternelle.
L’attachement des enfants avec un handicap neurologique ou neurodéveloppemental précoce
Authors: Ouss Lisa , Boissel Laure
Published: March 2022

Après un bref rappel de l’intérêt de la théorie de l’attachement dans le développement normal, cet article passe en revue la littérature sur l’attachement chez les jeunes enfants présentant un tnd, notamment un trouble du spectre de l’autisme et un trouble du développement intellectuel, puis chez les enfants présentant un trouble neurologique précoce. Trois constats sont importants : 1) il est possible de surmonter les difficultés méthodologiques pour évaluer l’attachement chez ces enfants ; 2) ils sont capables de constituer un attachement sécure ; 3) néanmoins, il existe chez eux une sur-représentation de l’attachement insécure. Enfin, de nombreuses études retrouvent que la capacité des parents à faire face à l’annonce de la maladie et ses conséquences (capacité de résolution) semble très déterminante dans la genèse des attachements insécures chez leur enfant, parfois plus que la nature même de la maladie. La théorie de l’attachement se montre un contexte fécond qui permet de prendre en compte l’ancrage biologique du développement, ses interactions avec l’environnement, et de mettre en place des interventions ciblées.
Quand l’exploration des liens d’attachement donne la parole aux enfants souffrant de troubles majeurs du langage
Authors: Assous Adèle
Published: March 2022

Une recherche évaluant attachement et narrativité d’enfants présentant un trouble développemental du langage ( tdl ) sévère, anciennement appelé dysphasie, permettra d’illustrer à quel point la théorie de l’attachement peut constituer un support diagnostique et un précieux levier thérapeutique et ce particulièrement dans le champ du handicap précoce. L’écoute de la subjectivité permet d’appréhender les enjeux psychiques et ainsi de porter des indications de prise en charge en psychothérapie, difficiles à poser quand un trouble instrumental est massif.
Dirigeant et DRH en PME : Une double casquette difficile à porter !
Authors: Joyeau Anne , Le Gall Sébastien , Poilpot-Rocaboy Gwénaëlle
Published: March 2022

Qu’est-ce que le métier de dirigeant de PME ? Nous proposons ici une étude qualitative, réalisée auprès de quinze dirigeants, pour identifier les contours de ce métier. Cette étude confirme, d’une part, la diversité du profil des dirigeants ainsi que la complexité et la polyvalence de leur métier. Elle met en avant, d’autre part, l’importance perçue par les dirigeants de la dimension RH de leur métier, tout en révélant leur difficulté à l’assurer tant d’un point vue stratégique, managérial qu’instrumental. Cette contribution questionne de ce fait le besoin de compétences des dirigeants en matière de GRH et les stratégies possibles pour les acquérir.
Campagnes allemandes et soviétiques en Ukraine pendant la Seconde Guerre mondiale
Authors: Franc Claude
Published: March 2022

L’Ukraine a largement connu les tourmentes de la Seconde Guerre mondiale en étant une des régions de l’Est où la confrontation entre l’Allemagne nazie et l’URSS de Staline a été d’une violence et d’une intensité exceptionnelles et où les populations civiles ont souffert le martyre.
La régulation solidaire en Kabylie
Authors: Zoreli Mohamed-Amokrane
Published: March 2022

Dans le contexte algérien actuel, la main visible de l’Etat régulateur n’atteint pas les villages de montagne et le marché tend à accentuer la précarité des populations. Dans cette situation, l’idée que la régulation solidaire apparaisse en réaction à un cadre désespérant et par le biais de mécanismes internes opérants prend tout son sens. Suivant la méthode des fondateurs du solidarisme, cet article montre qu’en Kabylie, la régulation solidaire peut constituer une alternative réalisée dans la culture de la fraternité face à la défaillance irrémédiable des mécanismes classiques de régulation.
L’émergence des entreprises sociales rurales communautaires au Japon
Authors: Makion Matsuyo , Kitajima Ken-Ichi , Mammar El Hadj Sihem
Published: March 2022

Le Japon a un mouvement coopératif très dynamique, qui s’est traditionnellement développé à partir de deux modèles : celui de la coopérative agricole et celui de la coopérative de consommateurs. A ces deux modèles sont venues ensuite s’ajouter de nouvelles formes de coopératives inspirées par des valeurs différentes, telles que la coopérative de travailleurs ou la « coopérative communautaire », à laquelle cet article est consacré. Incarnant une forme d’entreprise sociale apparue en milieu rural pour répondre à des besoins ressentis par une communauté, ces coopératives partagent des caractéristiques communes avec les organisations du secteur à but non lucratif. Cet article analyse les origines historiques de ces organisations à partir de démarches apparues dans les années 1970, à l’initiative de producteurs et de consommateurs désirant promouvoir une agriculture biologique, jusqu’aux développements plus récents engagés dans des problématiques liées au développement communautaire, souvent en lien avec des collectivités locales.
La régulation publique dans le secteur des Ehpad
Authors: Delouette Ilona , Nirello Laura
Published: March 2022

Cet article a pour objectif d’analyser les conséquences de la régulation publique dans le secteur des Ehpad, notamment pour les 29,3 % d’établissements relevant de l’économie sociale et solidaire (ESS). Il repose sur une enquête réalisée dans les Pays de la Loire et sur une revue de la littérature portant sur des rapports provenant d’institutions publiques, mais aussi d’organisations privées. En s’appuyant sur une logique marchande, la régulation publique met en place des dispositifs de mise en concurrence des établissements et de standardisation de leurs activités via leur médicalisation. Ces évolutions fragilisent les finances des établissements de l’ESS et vont à l’encontre de leurs pratiques et valeurs historiques. Les organisations de l’ESS sont alors conduites à intégrer des stratégies issues de la culture du marché, voire de la finance. Elles sont ainsi entraînées dans un processus de concentration économique et de financiarisation.
Les coopératives jeunesse de services importées du Québec
Authors: Rospabé Sandrine , Maunaye Emmanuelle , Le Breton Hélène
Published: March 2022

Les coopératives jeunesse de services (CJS) se présentent comme un projet d’éducation des jeunes à l’entrepreneuriat coopératif. Importé du Québec, ce projet est expérimenté en Bretagne depuis 2013. Il rassemble dans un partenariat inhabituel des acteurs « économiques » de l’ESS (coopératives, pôle de développement de l’ESS, chambres régionales de l’ESS (Cress), etc.) et des acteurs « éducatifs » de l’ESS (structures d’éducation populaire/jeunesse) qui vont faciliter, le temps d’un été, la création et le développement d’une coopérative par des jeunes de 16 à 18 ans. Cet article interroge les perceptions de ces deux familles d’acteurs sur les CJS et, ce faisant, les rapports qu’ils peuvent entretenir dans une participation commune à ce projet. Il apparaît que ce travail en partenariat leur permet de déconstruire leurs préjugés et d’inventer de nouvelles manières de travailler ensemble.
La société coopérative anonyme à participation ouvrière (Scapo), un instrument juridique au service des coopératives de consommateurs ?
Authors: Gautier Jean-Paul
Published: March 2022

Dans le milieu de la coopération de consommation, l’association des salariés à l’administration et à la direction de la coopérative, aux côtés des coopérateurs eux-mêmes, ne coule pas de source et n’est pas des plus répandues. Bien qu’isolés dans le débat, certains pensent qu’il est pertinent de chercher à formaliser un certain niveau d’une telle participation du personnel. L’article aborde quatre des formes juridiques que peut prendre en France cette participation. Parmi celles-ci, aux côtés de la société coopérative d’intérêt collectif (SCIC) née il y a quinze ans, figure la société coopérative anonyme à participation ouvrière (Scapo) dont la base juridique a cent ans. La Scapo peut se révéler particulièrement congruente avec les principes et les objectifs coopératifs.
Le coopérativisme agricole argentin, du xix e siècle aux défis contemporains
Authors: Bageneta José Martín , Toucas-Truyen Patricia
Published: March 2022

Cet article présente une synthèse de l’histoire de la coopération agricole en Argentine des origines jusqu’à nos jours, sur fond d’évolution du modèle agricole national. Quatre grandes étapes se détachent : les premières expériences associatives à caractère coopératif sont apparues à la fin du xix e siècle, lorsque l’Argentine est devenue un pays agricole exportateur. Ensuite, le mouvement coopératif s’est développé et consolidé à la faveur de la croissance du marché intérieur pendant la première moitié du xx e siècle. Lors de la seconde moitié du xx e siècle, l’endettement et les difficultés des petits et moyens producteurs ont provoqué une stagnation progressive et un débat organisationnel. Au cours de la période récente, dans un secteur agricole dominé par l’agrobusiness, le coopérativisme a connu divers états successifs : crise, disparition et/ou reconversion.
Películas metálicas granulares obtenidas por evaporación térmica
Authors:   Universidad Autónoma del Estado de México, Nute Castañeda Gabriel , Hernández López Susana ,   Universidad Autónoma del Estado de México, Sánchez Dena Oswaldo ,   Universidad Autónoma del Estado de México, Vigueras Santiago Enrique ,   Universidad Autónoma del Estado de México
Published: March 2022

El desarrollo de nuevos materiales plasmónicos y el control de los ya existentes es un tema actual y de importancia debido a sus potenciales aplicaciones tecnológicas. En las películas granulares metálicas, la reproducibilidad de las características plasmónicas está relacionada con varios factores como son, el tamaño y la separación entre nanopartículas o nanoislas. Es por ello, que el control de estos factores durante la síntesis es fundamental para el desarrollo de este tipo de materiales. Dentro de las distintas técnicas especializadas utilizadas para la formación de materiales plasmónicos se encuentra la evaporación térmica al alto vacío. Como se muestra más adelante, ésta puede ser apropiada para la síntesis de películas granulares metálicas. En esta contribución se muestra la formación de películas granulares de oro y cobre por evaporación térmica a través del control de los parámetros de evaporación, que incluyen el tiempo, la presión de vacío y el tiempo de depósito. Se observa que oro y cobre crecen de manera diferente. La evaporación de oro puede dar lugar tanto a la formación de nanopartículas en unos cuantos segundos, y a la formación de nanoislas en pocos minutos; las islas de oro con morfología similar se pueden obtener utilizando diferentes condiciones de evaporación. Mientras que en la evaporación de cobre se observa que la nucleación es mucho más lenta, teniéndose la formación de nanopartículas alrededor de los 14 minutos, las cuales son casi esféricas y uniformemente distribuidas. Ambos materiales presentan un mecanismo de crecimiento del tipo de Volmer-Weber.
First Aid Training Program for Families With Children With Intellectual Disabilities: Effects on Knowledge, Anxiety, and Stress
Authors: Kaçan Havva
Published: March 2022

The current study aimed to evaluate the effects of a first aid training program for parents of children with intellectual disabilities on their levels of first aid knowledge, anxiety, and ability to cope with stress. A pre-/posttest control group experimental design was used. Data were collected using a demographic questionnaire, First Aid Knowledge Form, Beck Anxiety Inventory, and Ways of Coping Inventory. Data were analyzed through descriptive statistics, means, standard deviations, and difference tests. Mean first aid knowledge score in the experimental group increased after training (
p
< 0.001) and mean anxiety score decreased (
p
< 0.001). Regarding the subscales of coping with stress, a significant increase was found in the mean score of the self-confident approach (
p
< 0.001), whereas a significant decrease was found in mean scores of the helpless and submissive approaches (
p
< 0.001) after training in the experimental group. Findings highlight the practicality and need for a first aid training program, which should be implemented to strengthen the skills of parents of children with intellectual disabilities. [
Journal of Psychosocial Nursing and Mental Health Services, 60
(9), 37–45.]
White noise estimation for linear discrete fractional order system
Authors: Mu Yantong , Zhao Huihong , Li Zhifang
Published: March 2022

The process white noise (PWN) and observation white noise (OWN) estimation problem for linear discrete fractional order systems (LDFOS) is addressed in this study. By using the Grünwald-Letnikov (G-L) operator as a definition of the discrete fractional calculus (DFC), LDFOS is transformed into a class of linear discrete time-delay systems. However, it is different from the general time-delay system, in which the time-delay part is the cumulative sum from time 0 to the previous time. Based on the orthogonal projection theorem, a suboptimal one-step predictor of LDFOS is designed. Due to the existence of cumulative sum time-delay in system, the Riccati equation has one more cumulative sum state error variance term, which is different from the classical Kalman filter (KF). Moreover, using innovation analysis technology, the filtering and fixed-lag smoothing estimators of PWN and OWN in the form of noise orthogonal projection gain matrices are derived. Finally, two simulation examples are given to verify the effectiveness of PWN and OWN estimators.
Robust optimal investment-reinsurance strategies with the preferred reinsurance level of reinsurer
Authors: Zhang Wanlu , Meng Hui
Published: March 2022

This paper investigates robust equilibrium investment-reinsurance strategy for a mean variance insurer. With a larger market share, a reinsurer has a greater say in negotiating reinsurance contracts and makes the decision to propose the preferred level of reinsurance and charges extra fees as a penalty for losses that deviate from the preferred level of reinsurance. Once the insurer receives a decision from the reinsurer, the insurer weighs its risk-bearing capacity against the cost of reinsurance in order to find the optimal investment-reinsurance strategy under the mean-variance criterion. The insurer who is ambiguity averse to jump risk and diffusion risk obtains a robust optimal investment-reinsurance strategy by dynamic programming principle. Moreover, the reinsurance strategy is no longer excess-of-loss reinsurance or proportional reinsurance. In particular, the insurer may purchase proportional reinsurance for different ranges of loss and the proportion depends on the extra charge rate, which is more consistent with market practice than the standard excess-of-loss reinsurance and proportional reinsurance. The optimal reinsurance policy depends on the degree of ambiguous aversion to jump risk and not on the degree of ambiguous aversion to diffusion risk. Finally, several numerical experiments are presented to illustrate the impacts of key parameters on the value function and the optimal reinsurance contracts.
Research on the data integration strategy of local governments and enterprises under central government subsidies
Authors: Fan Zifu , Fan Kexin , Zhang Wei
Published: March 2022

This paper uses differential game theory to study the cooperation strategy and cost-sharing of local government and enterprise data integration under central government subsidies. We use differential game theory to build game models under the three modes of cooperative cooperation, noncooperation, and bilateral cost-sharing contracts; design a profit-sharing mechanism to improve the game structure between local governments and enterprises under bilateral cost-sharing contracts; and analyze the results of the model through simulation analysis. We draw the following research conclusions. (1) Under the collaborative cooperation model, the two parties in the game have the highest degree of data integration effort and the highest level of data integration, achieving Pareto optimality. (2) The profit-sharing mechanism can improve the bilateral cost-sharing contract so that the optimal effort of local governments and enterprises to integrate data and the level of data integration reach the level under the cooperative game and benefit the two sides of the game compared with the noncooperative model. This achieves Pareto improvement. (3) The efforts of local governments and enterprises to integrate data is negatively correlated with the cost coefficient of data integration and positively correlated with the social welfare effect. The research conclusions provide a theoretical reference for formulating local government and enterprise data integration policies and improving the level of data integration in China.
Homoenergetic solutions of the Boltzmann equation: the case of simple-shear deformations
Authors: Nota Alessia , Velázquez Juan J. L.
Published: March 2022

In these notes we review some recent results on the homoenergetic solutions for the Boltzmann equation obtained in [4,20,21,22]. These solutions are a particular class of non-equilibrium solutions of the Boltzmann equation which are useful to describe the dynamics of Boltzmann gases under shear, expansion or compression. Therefore, they do not behave asymptotically for long times as Maxwellian distributions, at least for all the choices of the collision kernels, and their behavior strongly depends on the homogeneity of the collision kernel and on the particular form of the hyperbolic terms which describe the deformation taking plance in the gas. We consider here the case of simple shear deformation and present different possible long-time asymptotics of these solutions. We discuss the current knowledge about the long-time behaviour of the homoenergetic solutions as well as some conjectures and open problems.
Stimuli Generation for Quality-of-Experience Evaluation of Mobile Applications
Authors: Wischhof Lars , Krahl Jan Andreas , Müllner Robert
Published: March 2022

The assessment of Quality-of-Experience (QoE) corresponding to a given set of Quality-of-Service (QoS) parameters is of high importance for any mobile network operator. Methods for subjective QoE assessment such as MUlti Stimulus test with Hidden Reference and Anchors (MUSHRA) or Subjective Assessment Methodology for Video Quality (SAMVIQ) are based on collecting user feedback for one or several stimuli, i.e. differently processed versions of a source.

Generating these stimuli corresponding to a given set of QoS parameters for a QoE assessment of a mobile application is a time-consuming, non-trivial task. Therefore, in this paper we propose a novel publicly available open-source framework for stimuli generation for QoE assessment of mobile applications. It is based on the combination of network emulation and automatic user-interface control of a real mobile device, whose behavior is recorded and post-processed to generate suitable stimuli.

The article presents the basic concept of the framework, describes its open-source implementation, and concludes with an initial evaluation of the framework based on typical types of mobile applications.
Hi World: The Virtual Book Learning Integrated Augmented Reality to Increase Knowledge of Covid-19 Prevention in The Learning Process Post-Pandemic Era
Authors: Putra Andika Bagus Nur Rahma , Heong Yee Mei , Meidyanti Dewi Sabrina , Rahmawati Anita
Published: March 2022

This research aims to Improve innovation Hi World integrated with AR, Testing The level of attraction of  Hi World, and test the level of Hi World's appropriateness for covid-19 patients. This research method is R&D involving the expert of Covid-19 and digital media. The result from this research are: Innovation of Hi World improved to have a good level of appropriateness with a score of  90%; Level of attraction with this book is good with a score of  95%, and Hi world have design choices that are suitable for the requirement that covid-19 patients needs
ExercisePill: An Exercise Application for Balance Problems in the Elderly
Authors: Piriyayotha Sarun , Keawmalaitip Auratsaya , Muneesawang Paisarn , Lertsinthai Parinya
Published: March 2022

ExercisePill is a Microsoft Kinect®-based exercise application developed for balance problems in the elderly. There were three factors to be considered when developing the application. First, it must be functional, usable, and reliable. To ensure this, each of the 20 participants in the program was observed and evaluated by experienced physicians over the course of the 2 months duration of the program. The 20 participants were equally divided between a control group and an exercise group. Testing of the app and a following satisfaction survey were the primary methods applied for measuring the reliability of the application. The second factor was in-home or unsupervised exercise, necessary for reasons such as the time and cost of transport for patients to attend medical centers. This, and other social and personal problems, tended to have a demotivating effect on the elderly influencing them to undertake beneficial exercise programs privately. Especially this latter aspect of the situation gave rise to the third important factor to be addressed, and that was the ability to monitor the progress of the patient. This gave rise to the development of a database in which the results for each exercise are stored and which can be checked anytime. The results from the program showed that the exercise group, who had used the computer application, had remarkably higher scores in most of the balance tests, indicating the effectiveness of the application.
Expanding the Remote Experiment Set with the 3Axis Portal Physical Model
Authors: Henke Karsten , Nau Johannes , Wuttke Heinz-Dietrich , Poliakov Mykhailo , Tabunshchyk Galyna , Parkhomenko Anzhelika , Poliakov Oleksii
Published: March 2022

The problem of insufficient variety of experiments with physical models in laboratory workshops for distance learning in the design of control systems is posed. It is caused by the limited operations with the physical model when using the interface at the level of electromechanics control. The way of solving the problem is substantiated: the transition from electromechanics control of physical models of devices to control systems for the processes of using these devices. The proposed way to increase the number of types of experiments is illustrated with examples of systems for using popular physical models of an elevator, storage warehouse and production cell. However, the main focus is on expanding the functionality of the physical model 3-Axis Portal. These possibilities are realized by equipping the portal head of the base model with new sensors and actuators, improving the loads with which the portal works and using new types of active surfaces in the working field of the portal. Based on the aggregation of the proposed nodes with the basic portal model, sixteen types of systems for setting up remote experiments are described. The structures of these systems, elements of implementation and variants of experiments are described, which relate to the design of digital control systems, visualization of sorting algorithms, technical diagnostics of electronic assemblies, pattern recognition and other relevant topics for teaching students of engineering specialties.
Les usages du terme « technologie » dans les discussions parlementaires sur le Plan en France (1955-1989)
Authors: Leenhardt Sophie
Published: March 2022

Technologie est un terme aujourd’hui très courant, dont l’usage était rare avant les années 1960, et monte en puissance dans les années 1980. S’agit-il d’un équivalent aux notions antérieures de progrès scientifiques et techniques, ou les enjeux associés à cette terminologie sont-ils différents ? L’instauration après la guerre de 1939-1945 d’une programmation pluriannuelle de l’action du gouvernement, formalisée par le Plan et faisant l’objet d’une discussion au Parlement, permet de disposer de l’expression des points de vue des parlementaires quant à la situation du pays et à ses perspectives. L’étude lexicométrique de ce corpus montre que l’injonction à développer les technologies est unanimement exprimée, sous les ressorts conjugués de l’ambition internationale, de la crainte du déclassement, de la difficulté à concilier des objectifs antagonistes comme compétitivité et demande sociale. Cette terminologie est mobilisée dans une rhétorique de crise et de « sortie vers le haut ».
La technologie en France au xixe siècle : de la pratique au concept au travers du parcours d’un acteur
Authors: Barron Géraldine
Published: March 2022

Jacques Guillerme et Jan Sebestik, dans leur article sur les « commencements de la technologie », constatent sa dilution dans les sciences de l’ingénieur au milieu du xixe siècle avant une renaissance au xxe siècle au sein des sciences humaines. L’analyse des pratiques permet de suggérer sa survivance dans le sens qui lui est donné à la fin du xviiie siècle et son inscription dans les sciences humaines émergentes au fil du siècle. L’exemple de l’officier de marine Pâris permet de saisir les tensions entre technologie, science de la technique, science des machines et science humaine, et l’investissement du musée comme nouvel espace de la technique.
Technique et économie chez Marcel Mauss
Authors: Vatin François
Published: March 2022

Cet article se penche sur relations entre les concepts de technique et d’économie en prenant appui sur l’œuvre de Marcel Mauss. La première partie souligne le primat du concept de technique sur celui d’économie pour Mauss. La seconde relativise cette idée en distinguant l’économie politique de l’économie industrielle, notion qui est valorisée par Mauss. La troisième partie montre, en s’appuyant sur une conception large de la notion d’économie, que le concept de technique inclut un principe d’économie. La quatrième partie enfin montre que, de même, Max Weber ne parvient pas à distinguer rationalité économique et rationalité technique. L’article conclut en faveur d’une conception qui n’oppose pas technique et économie comme deux piliers de la modernité qui se feraient face, mais les pense comme étroitement entrelacés, à la manière des serpents d’un caducée.