256488 research outputs found
Sort by
Exploring the Greenland Ice Sheet’s response to future atmospheric warming-threshold scenarios over 200 years
Get PDFpeer reviewedAbstract. The Greenland Ice Sheet (GrIS) plays a crucial role in sea level rise (SLR). We investigate its response to warming thresholds over two centuries using a coupled regional-atmospheric ice sheet model (MAR-PISM, respectively run at 25 and 4.5 km resolutions). We explore responses to global atmospheric temperature increases from +0.6 to +5.8 °C since the pre-industrial period and assess GrIS recovery if the climate reverts to present conditions, while prescribing unchanged ocean conditions. Our study focuses exclusively on evaluating the effect of atmospheric changes on the Greenland Ice Sheet without considering oceanic warming. Moderate atmospheric warmings (+0.6 to +1.4 °C) yield steady and similar SLR contributions (from +8.35 to +9.55 cm in 2200), close to levels already committed under the present climate. Global temperature increases beyond +1.4 °C mark a critical threshold, triggering non-linear mass loss due to feedback mechanisms like the melt–albedo effect and firn saturation. The SLR increase between the +1.4 and +2.3 °C experiments is larger (+7.56 cm), highlighting an accelerating mass loss. This trend is further reinforced by the even greater increase of 15.51 cm between +4.4 and +5.2 °C, underscoring the amplified impact of higher warming levels. Reversing the climate after surpassing +2.3 °C demonstrates the potential for a substantial slowdown in GrIS mass loss, indicating a trend toward stabilization at a reduced state (approximately 4 % smaller). These findings underscore the impact of thresholds and time spent above them, highlighting the importance of limiting anthropogenic warming to mitigate GrIS mass loss and the long-term SLR associated with it
Digital Markets, Local Products: Psychological Drivers of Buying Nomadic Local Foods Online
Get PDFpeer reviewedE-commerce is quickly increasing purchasing behavior across the globe, but little is known about how psychological paradigms underscore online buying intentions for locally essential items as nomadic local foods. The primary goal of this research is to examine the effects of some important psychological constructs and motivational values on predicting consumers’ intention to purchase nomadic and local foods via online e-commerce platforms, such as Ashayershop. This study followed the Theory of Planned Behavior (TPB) and looked at direct and mediated effects of attitudes, perceived behavioral control, and subjective norms on intention to purchase. Structural Equation Modeling (SEM) was conducted, based on data collected from a representative sample of consumers who were familiar with online shopping for local foods. The results highlight that attitude towards online shopping for local foods was the strongest direct predictor of intention to purchase (β = 0.383, T = 9.487, p < 0.001). Perceived behavioral control (β = 0.220, T = 5.316, p < 0.001), hedonic value (β = 0.213, T = 4.907, p < 0.001), utilitarian value (β = 0.187, T = 3.719, p < 0.001), and subjective norms (β = 0.149, T = 3.493, p < 0.001), received a significant positive effect on intention. In addition, hedonic and utilitarian values bountifully mediated the relation between psychological antecedents (attitudes, perceived behavioral control, and subjective norms) and purchase intention. For instance, attitude indirect effect via hedonic value was β = 0.080 (T = 3.783, p < 0.01), and indirect effect via utilitarian value was β = 0.040 (T = 3.058, p < 0.01), indicating the importance of these values as mediators. This research makes a contribution to the literature by showing that motivational values serve as not only an outcome but also as cognitive–affective mediators in the behavioral process thus expanding the TPB in the context of digital food markets. In general, these results provide valuable insights to e-commerce platforms and policymakers who desire to promote consumer engagement with products stemming from culture and tradition on line by developing new integrated strategies that address the cognitive, emotional, and social components
Gynecologic surgery for benign disease: Preserving reproductive potential.
Get PDFpeer reviewedPreserving fertility is essential when managing benign gynecologic disorders in reproductive-aged women. Surgical interventions can impact future fertility, therefore requiring an evidence-based, individualized approach. The FIGO Committee on Reproductive Endocrinology and Infertility reviewed current literature to develop recommendations for fertility-sparing surgical management. Effective treatment must balance disease control with fertility preservation. Evidence supports refined surgical techniques and alternative methods that minimize reproductive harm. In pregnancy loss management, medical treatment is preferred; however, if surgery is needed, hysteroscopic evacuation is safer than sharp curettage, reducing the risk of intrauterine adhesions. Similarly for other operative hysteroscopic procedures or abdominal procedures, including myomectomy, the use of an adhesion-reducing substance is recommended. During abdominal myomectomy, only symptomatic or fertility-impairing fibroids should be removed, as excessive resection may reduce pregnancy chances. In endometrioma surgery, preserving ovarian tissue is crucial by minimizing stripping of the pseudocapsule, or using sclerotherapy may help. Oocyte cryopreservation should be discussed when recurrence or reduced ovarian reserve is a concern. Hydrosalpinx often requires salpingectomy to enhance in vitro fertilization outcomes, but surgeons should protect ovarian blood flow by minimizing thermal injury. For adenomyosis, medical management is preferred due to the risks associated with surgical techniques like the triple-flap procedure. In polycystic ovary syndrome, laparoscopic ovarian drilling is discouraged; ovulation induction with letrozole or gonadotropins is safer and effective. In summary, fertility-sparing treatment demands personalized, evidence-based strategies that prioritize reproductive potential while managing disease. As reproductive goals evolve, continued refinement of these approaches remains vital to women's health care
Le paradoxe du bien-être au travail: Une responsabilité... mais aussi un fardeau pour les managers?
No full textSpatially Resolved Photodoping of Oxygen‐Deficient YBa2Cu3O7−δ Resonators
Get PDFpeer reviewedOxygen‐depleted YBa2Cu3O7−δ exhibits a substantial drop in the normal‐state resistivity and an increase in the superconducting critical temperature when illuminated with visible light. The photo‐induced states are metastable, slowly decaying at high temperatures and essentially persistent at low temperatures. In this work, this effect is exploited to modify the response of half‐wavelength YBa2Cu3O7−δ resonators and simultaneously the high‐sensitivity of the resonant circuit is used to investigate the persistent photodoping of this material. Under illumination, the bolometric effect and photodoping are clearly distinguished by the different time scales associated with each mechanism. Using a 60 µm‐wide laser spot, the properties of the resonator are locally and reversibly modified, and the position‐dependent sensitivity of the device is demonstrated. This enables the direct imaging of standing waves at both the fundamental resonance and the second harmonic.HORIZON EUROPE Reforming and enhancing the European Research and Innovation syste
How Parents’ Goal Impacts Reminiscing Style and Children’s Memory Performance
Get PDFpeer reviewedAims. Variations in the practice of elaborative parental reminiscing—i.e., when parents discuss the past with their child in a rich and collaborative manner—are known to influence children’s memory performance. In recent years, researchers have attempted to identify the specific components of reminiscing (e.g., concretization, evaluation, metacognitive talk, etc.) that contribute to this effect, with varying degrees of success as findings appear to differ depending on factors such as the type of memory task (e.g., episodic vs. autobiographical memory tasks), the nature of the events discussed (e.g., standardized vs. freely selected past events), and the timing of reminiscing (immediate vs. delayed). Here, we propose that parental reminiscing style is a flexible mechanism that varies based on the parent’s goal when they discuss the past with their child, which may explain why different types of reminiscing do not uniformly affect memory processes.
Method. To test this hypothesis, we recruited 128 parent-child dyads (Mean AgeChild = 34.37 months, SD = 6.13) and asked them to discuss three different events: (a) a past shared event freely selected by the parent, (b) a standardized shared staged activity occurring in the lab, and (c) a standardized shared staged activity occurring at home. The timing of reminiscing for the two standardized events was also manipulated: half of our parent-child dyads discussed the lab event immediately and the home event after a delay, while the other half of our sample did the reverse. After each discussion, parents completed a short questionnaire asking about their goal during the conversation (e.g., helping their child remember, regulating their emotions, etc.). Children’s memory was then assessed using an associative episodic memory task and a task evaluating memory for past events.
Results. Data revealed that parents’ goals during reminiscing influence their conversational style. Parents who aimed to support their child’s memory used more evaluation and metacognitive talk, whereas those focused on helping their child make sense of the event used more concretization and external references. Interestingly, while the frequency of parents’ metacognitive talk was positively associated with children’s performance on the associative memory task, children’s memory for past events was only predicted by the frequency of parental concretization and external references during the reminiscing.
Discussion & Conclusions. From a clinical perspective, our findings are critical as they could help refine existing cognitive rehabilitation programs based on parental reminiscing. Such programs have recently been proposed to support children at risk of difficulties in recalling past experiences and could benefit from tailoring reminiscing strategies to specific memory processes
Density And Spatial Distribution Of The Main Anthropogenic Disturbances In The Classified Forest Of The Ouémé Supérieur In North Benin.
Get PDFAux origines de Saint-Hubert en Ardenne. La communauté d'Andage et l'instauration de la règle monastique (ca 700-817)
No full textCette conférence retrace les origines de la communauté religieuse d’Andage, future abbaye de Saint-Hubert, entre la fin du VIIᵉ et le début du IXᵉ siècle. Elle fut fondée par Pépin II d’Austrasie et son épouse Plectrude, sur les conseils de Bérégise, chapelain de Pépin II. Ce dernier lui confia la direction de la communauté religieuse organisée autour d’une église dédiée à saint Pierre. Cette église fut consacrée par l'évêque diocésain : Lambert, Faramond ou Hubert de Maastricht. Cette conférence propose également une réflexion sur la nature de la première communauté : des moines, des clercs ou des hommes aspirant à vivre en communauté selon des modalités difficiles à saisir pour les auteurs médiévaux des 10e-11e siècles. Ces derniers sont empreints d'une vision dualiste (moine >< chanoine) imposée au début du 9e siècle. C'est à l'évêque Walcaud que l'on doit l'établissement ou le rétablissement de la règle bénédictine vers 814-817.This lecture traces the origins of the religious community of Andage, the future Abbey of Saint-Hubert, between the late 7th and early 9th centuries. It was founded by Pepin II of Austrasia and his wife Plectrude, on the advice of Beregisel, Pepin II's chaplain. The latter entrusted him with the leadership of the religious community, which was organized around a church dedicated to Saint Peter. This church was consecrated by the diocesan bishop: Lambert, Faramond, or Hubert of Maastricht. This lecture also offers a reflection on the nature of the first community: monks, clerics, or men aspiring to live in community according to modalities difficult for medieval authors of the 10th and 11th centuries to grasp. These authors were influenced by a dualistic vision (monk vs. canon) imposed at the beginning of the 9th century. Bishop Walcaud is credited with the establishment or re-establishment of the Benedictine rule around 814-817