scholarly journals A General Origin for Multiplanetary Systems With Significantly Misaligned USP Planets

2021 ◽  
Vol 162 (6) ◽  
pp. 242
Author(s):  
L. Brefka ◽  
J. C. Becker

Abstract Ultra-short-period (USP) planets are exoplanets that have orbital periods of less than one day and are unique because they orbit inside the nominal magnetic truncation gap of their host stars. In some cases, USP planets have also been observed to exhibit unique dynamical parameters such as significant misalignments in inclination angle with respect to nearby planets. In this paper, we explore how the geometry of a multiplanet system hosting a USP planet can be expected to evolve as a star ages. In particular, we explore the relationship between the mutual inclination of the USP planet and the quadrupole moment (J 2) of the host star. We use secular perturbation theory to predict the past evolution of the example TOI-125 system, and then confirm the validity of our results using long-term N-body simulations. Through investigating how the misalignment between the candidate USP planet and the three other short-period planets in the TOI-125 system arose, we intend to derive a better understanding of the population of systems with misaligned USP planets and how their observed parameters can be explained in the context of their dynamical histories.

Literary Fact ◽  
2021 ◽  
pp. 8-30
Author(s):  
Monika V. Orlova

The publication includes V.Ya. Bryusov’s letters to his fiancée I.M. Runt (1876 –1965) from June 9 to September 9, 1897. 11 correspondences, including the final telegram sent from Kursk, were written and sent from Aachen (Germany), Moscow and several Ukrainian localities. The letter 10 is accompanied by the full text of I.M. Runt’s only surviving letter to Bryusov, sent from Moscow to the village of Bolshye Sorochintsy and received by the poet a few months later at home. The relationship between the young people before the wedding were complicated. While the poet was preparing for the wedding in Moscow, he summed up the past contacts with “mes amantes”, and his state of mind was painful. Shortly before meeting his future wife, Bryusov broke up with the former governess of his family E.I. Pavlovskaya, who was terminally ill. A few days before the wedding he decided to go to say goodbye to Pavlovskaya to her homeland, Ukraine. In his letters to the future wife the poet tried to smooth out the tension of the situation, perhaps anticipating that he would be bounded with I.M. Runt 30 Литературный факт. 2021. № 2 (20) by a long-term relationship, where life and literature are closely interconnected. The letters are published for the first time.


2020 ◽  
pp. 1-18
Author(s):  
Panagiotis Liargovas ◽  
Marios Psychalis

One of the most important problems facing Greece is the long-term and high-level unemployment rate. The Economic Adjustment Programmes (EAPs) focused on the supply side of the economy, aiming at the adjustment of prices and wages, draw on the classical economic model, as it is widely accepted that internal devaluation policies keep inflation low. This article attempts to examine whether the Keynesian theory and the Phillips Curve, which shows the relationship between unemployment and inflation, apply in the case of the Greek economy. We use descriptive statistics, ordinary least squares (OLS) and VAR Analysis to examine the relationship between the variables. According to the results, there is a negative correlation between unemployment and inflation in Greece, thus confirming the Phillips Curve hypothesis. Finally, results show that unemployment is less dependent on inflation compared with the past, and there are numerous other decisive factors affecting unemployment.


2020 ◽  
pp. 1-13 ◽  
Author(s):  
Kornelia Kończal

In early 2018, the Polish parliament adopted controversial legislation criminalising assertions regarding the complicity of the ‘Polish Nation’ and the ‘Polish State’ in the Holocaust. The so-called Polish Holocaust Law provoked not only a heated debate in Poland, but also serious international tensions. As a result, it was amended only five months after its adoption. The reason why it is worth taking a closer look at the socio-cultural foundations and political functions of the short-lived legislation is twofold. Empirically, the short history of the Law reveals a great deal about the long-term role of Jews in the Polish collective memory as an unmatched Significant Other. Conceptually, the short life of the Law, along with its afterlife, helps capture poll-driven, manifestly moralistic and anti-pluralist imaginings of the past, which I refer to as ‘mnemonic populism’. By exploring the relationship between popular and political images of the past in contemporary Poland, this article argues for joining memory and populism studies in order to better understand what can happen to history in illiberal surroundings.


Author(s):  
Na Ma ◽  
Ping Liu ◽  
Chao Chen ◽  
Aili Zhang ◽  
Lisa X. Xu

Tissue hypoxia is a common and important feature of rapidly growing malignant tumors and their metastases. Tumor cells mainly depend on energy production thru anaerobic glycolysis rather than aerobic oxidative phosphorylation in mitochondria [1]. Intervening the tumor metabolic process via thermal energy infusion is worthy attempting. And hyperthermia, mildly elevated local temperature above the body temperature, is one of such kind. Previously, after being heated for a short period of time, tumor glucose and lactate level increased and ATP level decreased, which suggested energy metabolism was modified following hyperthermia through increased ATP hydrolysis, intensified glycolysis and impaired oxidative phosphorylation [2]. Many researchers designed experiments to determine thermal dose in hyperthermia [3], but few focused on the relationship between tumor and energy, especially for a long-term local hyperthermia treatment. One clinical trial indicated the effective long-term hyperthermo-therapy for maintaining performance status, symptomatic improvement, and prolongation of survival time in patients with peritoneal dissemination [4].


2021 ◽  
Author(s):  
Tianhong Tim Qiu ◽  
John Paul Minda

Both psychedelics and mindfulness are a recently emerging topic of interest in academia and popular culture alike. Personal meditation practices and recreational psychedelic use have consistently increased in the past decade. While clinical work has shown both to improve long-term wellbeing, the data on naturalistic applications of psychedelics and mindfulness is rather lacking. The current study aims to examine the relationship between psychedelic use, mindfulness, and multi-faceted wellbeing as an outcome. Hierarchical regression was used to quantify these associations on a large sample of people (N = 1219), who engage in both meditation practices and psychedelic use. These results show that both mindfulness and mystical experiences each predict substantial increases in wellbeing. Psychedelics were found to be an important moderator of mystical experience to explain improvements in wellbeing. These data are among the first to establish a strong relationship between personal mindfulness practice, recreational psychedelic use, and overall psychological wellbeing in a naturalistic framework.


2018 ◽  
Vol 5 (2) ◽  
pp. 205316801877993
Author(s):  
Dino Hadzic

Can reminders of violence committed in the past influence citizens’ policy preferences in the present? Prior work has found that under the threat of violence individuals prioritize safety and adopt policy views aimed at reducing the threat. Elites can then strategically employ concerns over personal safety and security to shape the public’s preferences. I contribute to this literature by conducting an exploratory study of whether invocations of violence committed in the past shape preferences in the long-term, years after the actual violence has ended. To do so, I fielded an experiment on a large ( N = 1125) and nationally representative sample of respondents in Bosnia, the site of a major ethnic civil war in 1992–1995. I did not find evidence that reminders of wartime violence in and of themselves affect policy preferences. Ultimately, this study represents a first cut at a neglected question in the literature and has implications that could motivate future research on the relationship between violent conflict and policy preferences.


2019 ◽  
Vol 14 (1) ◽  
pp. 27-39 ◽  
Author(s):  
Fukashi Maeno ◽  
Setsuya Nakada ◽  
Mitsuhiro Yoshimoto ◽  
Taketo Shimano ◽  
Natsumi Hokanishi ◽  
...  

Kelud Volcano is among the most active volcanoes in Indonesia, with repeated explosive eruptions throughout its history. Here, we reconstructed the relationship between the repose period and the cumulative volume of erupted material over the past 100 years and estimated the long-term magma discharge rate and future eruptive potential and hazards. Tephra data and eruption sequences described in historical documents were used to estimate the volume and mass discharge rate. The volumes of the 1901, 1919, 1951, 1966, 1990, and 2014 eruptions were estimated as 51–296 × 106m3. The mass discharge rates were estimated to be on the order of 107kg/s for the 1919, 1951, and 2014 eruptions and the order of 106kg/s for the 1966 and 1990 eruptions. Based on a linear relationship between the repose period and cumulative erupted mass, the long-term mass discharge rate was estimated as ∼ 1.5 × 1010kg/year, explaining the features of the larger eruptions (1919, 1951, and 2014) but not those of the smaller eruptions (1966 and 1990). This estimate is relatively high compared to other typical basaltic-andesitic subduction-zone volcanoes. This result provides important insights into the evolution of magmatic systems and prediction of future eruptions at Kelud Volcano.


2009 ◽  
Vol 13 (1) ◽  
pp. 59-92
Author(s):  
Philipp Bruckmayr

AbstractThe paper is concerned with a long-term perspective on the position of Māturīdi kalām within (mostly) Hanafi Muslim societies from Timurid times to the 19th century. Whereas outright conflict between legal and theological schools was mainly a thing of the past during the time in question with Ash'arism, already fully embraced also by Hanafi constituencies within the ahl al-sunna wa l-jamā'a, a preference for Māturīdi views on specific issues persisted among the majority of Hanafi kalām scholars from Bosnia to South Asia. This state of affairs will be highlighted through recourse to madrasa curricula and theological literature from the era and areas as diverse as Turkey and Southeast Asia. Additionally, it seeks to draw attention to the mechanisms behind the spread and long-term persistence of the school throughout large parts of a Muslim world seemingly dominated by Ash'arism in the sphere of scholastic theology. In this regard, the prevalence of Transoxanian legal tradition within Hanafism and its linkages to Māturīdism, as well as the relationship of Naqshbandi Sufism to the school will be discussed.


2018 ◽  
Vol 610 ◽  
pp. A63 ◽  
Author(s):  
O. D. S. Demangeon ◽  
F. Faedi ◽  
G. Hébrard ◽  
D. J. A. Brown ◽  
S. C. C. Barros ◽  
...  

To investigate the origin of the features discovered in the exoplanet population, the knowledge of exoplanets' mass and radius with a good precision (≲10%) is essential. To achieve this purpose the discovery of transiting exoplanets around bright stars is of prime interest. In this paper, we report the discovery of three transiting exoplanets by the SuperWASP survey and the SOPHIE spectrograph with mass and radius determined with a precision better than 15%. WASP-151b and WASP-153b are two hot Saturns with masses, radii, densities and equilibrium temperatures of 0.31−0.03+0.04 MJ, 1.13−0.03+0.03 RJ, 0.22−0.02+0.03 ρJ and 1290−10+20 K, and 0.39−0.02+0.02 MJ, 1.55−0.08+0.10 RJ, 0.11−0.02+0.02 ρJ and 1700−0.40+0.40 K, respectively. Their host stars are early G type stars (with mag V ~ 13) and their orbital periods are 4.53 and 3.33 days, respectively. WASP-156b is a super-Neptune orbiting a K type star (mag V = 11.6). It has a mass of 0.128−0.009+0.010 MJ, a radius of 0.51−0.02+0.02 RJ, a density of 1.0−0.1+0.1 ρJ, an equilibrium temperature of 970−20+30 K and an orbital period of 3.83 days. The radius of WASP-151b appears to be only slightly inflated, while WASP-153b presents a significant radius anomaly compared to a recently published model. WASP-156b, being one of the few well characterized super-Neptunes, will help to constrain the still debated formation of Neptune size planets and the transition between gas and ice giants. The estimates of the age of these three stars confirms an already observed tendency for some stars to have gyrochronological ages significantly lower than their isochronal ages. We propose that high eccentricity migration could partially explain this behavior for stars hosting a short period planet. Finally, these three planets also lie close to (WASP-151b and WASP-153b) or below (WASP-156b) the upper boundary of the Neptunian desert. Their characteristics support that the ultra-violet irradiation plays an important role in this depletion of planets observed in the exoplanet population.


2019 ◽  
Vol 75 (1) ◽  
pp. 232-234 ◽  
Author(s):  
Greg Richards

Purpose This paper aims to review the development of the relationship between culture and tourism over the past 75 years and outline some future developments over the coming 75 years. Design/methodology/approach This paper is based on a review of previous major work on cultural tourism. Findings Tourism and culture have been drawn inexorably closer over the years as culture has become one of the major content providers for tourism experiences, and tourism has become one of the most important income streams for cultural institutions. In the future, this is likely to change, as cultural institutions find it increasingly difficult to maintain their authority as the dominant producers of local, regional and national culture and as tourism becomes increasingly integrated into the everyday culture of the destination. Practical implications Cultural institutions will need to change their relationship with tourism as flows of tourists become more prevalent and fragmented. Social implications The authority of high cultural institutions will be eroded as tourists increasingly seek authenticity in the culture of everyday life and the ‘local’. Originality/value This study reviews the dynamics of the cultural field and sketches the long-term future development of the relationship between tourism and culture.


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