bluuebunny/crossref_metadata_2025_split huggingface dataset:
Quadruply charmed dibaryons as heavy quark symmetry partners of the DDK bound state
Authors: Wu Tian-Wei , Liu Ming-Zhu , Geng Li-Sheng , Hiyama Emiko , Valderrama Manuel Pavon , Wang Wen-Ling 
Published: September 2020

AbstractBoth unitary chiral theories and lattice QCD simulations show that the DK interaction is attractive and can form a bound state, namely, $$D^*_{s0}(2317)$$

D

s
0

∗

(
2317
)

. Assuming the validity of the heavy antiquark–diquark symmetry, the $$\Xi _{cc}{\bar{K}}$$

Ξ

cc

K

¯

interaction is the same as the DK interaction, which implies the existence of a $$\Xi _{cc}{\bar{K}}$$

Ξ

cc

K

¯

bound state with a binding energy of $$49-64$$

49
-
64

MeV. In this work, we study whether a $$\Xi _{cc}\Xi _{cc}{\bar{K}}$$

Ξ

cc

Ξ

cc

K

¯

three-body system binds. The $$\Xi _{cc}\Xi _{cc}$$

Ξ

cc

Ξ

cc

interaction is described by exchanging $$\pi $$
π
, $$\sigma $$
σ
, $$\rho $$
ρ
, and $$\omega $$
ω
mesons, with the corresponding couplings related to those of the NN interaction via the quark model. We indeed find a $$\Xi _{cc}\Xi _{cc}{\bar{K}}$$

Ξ

cc

Ξ

cc

K

¯

bound state, with quantum numbers $$J^P=0^-$$

J
P

=

0
-

, $$I=\frac{1}{2}$$

I
=

1
2

, $$S=1$$

S
=
1

and $$C=4$$

C
=
4

, and a binding energy of 80–118 MeV. With the same formalism, we find that the $$\Xi _{cc}\bar{\Xi }_{cc}{\bar{K}}$$

Ξ

cc

Ξ

¯

cc

K

¯

system also binds, yielding a $$I(J^P)=\frac{1}{2}(0^+)$$

I

(

J
P

)

=

1
2

(

0
+

)

state and a $$\frac{1}{2}(1^+)$$

1
2

(

1
+

)

state with binding energies of 56–68 MeV and 56–67 MeV respectively. As a byproduct, we show the existence of a $$NN{\bar{K}}$$

N
N

K

¯

state with a binding energy of 35–43 MeV, consistent with the results of other theoretical works and experimental data, which serves as a consistency check on the predicted $$\Xi _{cc}\Xi _{cc}{\bar{K}}$$

Ξ

cc

Ξ

cc

K

¯

bound state.
A multiple parallel mediation between transformational leadership and project-based performance — A process model
Authors: Ul Haq Inzamam , Paracha Adil Tahir , Shakeel Wajid 
Published: September 2020

Purpose: Our purpose to write this paper is to analyze how VRIO mediates the relationship between transformational leadership and project performance by examining the direct and mediated relationships on project performance outcomes. This study combined the two dynamic concepts: project management and strategic management with the support of both literatures. Design/methodology/approach: The resource-based view is operationalized to analyze the effect of project management assets and characteristics to gain a competitive edge in the industry and market as whole. The parallel mediation has been analyzed applying VRIO framework between transformational leadership and project performance, moreover its impact on firm-based performance is supported by the literature. Finding: Transformational leadership scientifically predicts project performance. Results demonstrated two mediations to be accepted (Rare resources and Valuable Resources) however, both got rejected in the Pakistani context. Research Limitations: The sample size considered for our study was only 256 and data were gathered from comparatively small software companies due to the fact that software companies in Islamabad and Rawalpindi are small comparatively in India or USA. Practical Implication: The research contributions are quite interesting; these would be followed by the transformational leaders in software industry to attain competitive edge in market using project assets characteristics. Originality/value: A useful combination of transformational leadership and resource-based view theory is used to reach project potential and improvements to sustain in competition.
Le gouvernement de l’homme royal dans le Politique : une utopie assumée
Authors: Balansard Anne 
Published: September 2020

Abstract
The object of this article, which analyses Statesman 291a1-303d3, is to show how the good, the object of politics qua knowledge, makes the regime with which it is associated a utopia. The good cannot be actualized anywhere in the sensible realm, because no city can be governed without laws, and the laws define what is good most often for the greatest number. A government of the good, without laws, is a utopia, but the laws, to the extent that they aim at the common interest, are in themselves the imprint of the good. I defend the thesis, at first sight paradoxical, that the true politicians are not those who know the good and imitate it, but those who recognise the utility of laws and agree to submit themselves to their authority. Thus Plato dismisses all existing regimes as sophistic regimes where power is exercised in the interest of the rulers and not of the ruled. Not every regime, however, bears the imprint of the good equally. By making politics a branch of knowledge, Plato imposes a numerical criterion on the classification of regimes; he crosses the criterion of number with that of law. I therefore argue for another paradox: the best possible regime is a monarchy in which the rulers obey the laws, the best existing regime is none other than democracy.
Politics as Architectonic Expertise? Against Taking the So-called ‘Architect’ (ἀρχιτέκτων) in Plato’s Statesman to Prefigure this Aristotelian View
Authors: Lane Melissa 
Published: September 2020

Abstract
This article rejects the claim made by other scholars that Plato in the Statesman, by employing the so-called ‘architect’ (ὁ ἀρχιτέκτων) in one of the early divisions leading to the definition of political expertise, prefigured and anticipated the architectonic conception of political expertise advanced by Aristotle. It argues for an alternative reading in which Plato in the Statesman, and in the only other of his works (Gorgias) in which the word appears, closely tracks the existing social role of the architektōn, who was designated as such only in virtue of appointment by a city to a role that was crucially defined as epitactic, involving overseeing the workers on site engaged in constructing some civic building works. It is this epitactic dimension of the role on which Plato relies in the Statesman, as opposed to the kind of claim to overarching integrative expertise that Aristotle would use the figure of architectonic political knowledge to make.
Sign of the Times: the Rise and Fall of Politics in Plato’s Statesman
Authors: Weigelt Charlotta 
Published: September 2020

Abstract
This article argues that the Statesman should be read as a historically informed reflection on the nature and possibility of political rule, and that it presents us with a dilemma precisely in this regard. On the one hand, as indicated by the famous myth on the evolution of the cosmos, politics is only possible today, in the age of Zeus, when man no longer is like a sheep, ruled by a caring herdsman, as he used to be in the age of Cronus. Instead, he has become an expert who is capable of some degree of self-rule. On the other hand, however, as a ‘technocratic’ age, the present is marked by its loss of the ‘natural’ model for statesmanship. More specifically, when politics tends to be identified with technical expertise, it becomes difficult to make sense of the very idea of political rule.
The Bavarian Commentary and Ovid
Authors: Wahlsten Böckerman Robin 
Published: September 2020

The Bavarian Commentary and Ovid is the first complete critical edition and translation of the earliest preserved commentary on Ovid’s Metamorphoses.
Today, Ovid’s famous work is one of the touchstones of ancient literature, but we have only a handful of scraps and quotations to show how the earliest medieval readers received and discussed the poems—until the Munich Bayerische Staatsbibliothek clm 4610. This commentary, which dates from around the year 1100 is the first systematic study of the Metamorphoses, founding a tradition of scholarly study that extends to the present day.
Despite its significance, this medieval commentary has never before been published or analysed as a whole. Böckerman’s groundbreaking work includes a critical edition of the entire manuscript, together with a lucid English translation and a rigorous and stimulating introduction, which sets the work in its historical, geographical and linguistic contexts with precision and clarity while offering a rigorous analysis of its form and function.
The Bavarian Commentary and Ovid is essential reading for academics concerned with the reception of Ovid or that of other ancient authors. It will also be of great interest for Classical scholars, those investigating medieval commentaries and media history, and for anyone intrigued to know more about how the work of Ovid has echoed through history.
Convective Coupling in Tropical-Depression-Type Waves. Part II: Moisture and Moist Static Energy Budgets
Authors: Feng Tao , Yu Jia-Yuh , Yang Xiu-Qun , Huang Ronghui 
Published: September 2020

AbstractThe companion of this paper, Part I, discovered the characteristics of the rainfall progression in tropical-depression (TD)-type waves over the western North Pacific. In Part II, the large-scale controls on the convective rainfall progression have been investigated using the ERA-Interim data and the TRMM 3B42 precipitation-rate data during June–October from 1998 to 2013 through budgets of moist static energy (MSE) and moisture. A buildup of column-integrated MSE occurs in advance of deep convection, and an export of MSE occurs following deep convection, which is consistent with the MSE recharge–discharge paradigm. The MSE recharge–discharge is controlled by horizontal processes, whereby horizontal moisture advection causes net MSE import prior to deep convection. Such moistening by horizontal advection creates a moist midtroposphere, which helps destabilize the atmospheric column, leading to the development of deep convective rainfall. Following the heaviest rainfall, negative horizontal moisture advection dries the troposphere, inhibiting convection. Such moistening and drying processes explain why deep convection can develop without preceding shallow convection. The advection of moisture anomalies by the mean horizontal flow controls the tropospheric moistening and drying processes. As the TD-type waves propagate northwestward in coincidence with the northwestward environmental flow, the moisture, or convective rainfall, is phase locked to the waves. The critical role of the MSE import by horizontal advection in modulating the rainfall progression is supported by the anomalous gross moist stability (AGMS), where the lowest AGMS corresponds to the quickest increase in the precipitation rate prior to the rainfall maximum.
Multiple Environmental Influences on the Lightning of Cold-Based Continental Cumulonimbus Clouds. Part I: Description and Validation of Model
Authors: Phillips Vaughan T. J. , Formenton Marco , Kanawade Vijay P. , Karlsson Linus R. , Patade Sachin , Sun Jiming , Barthe Christelle , Pinty Jean-Pierre , Detwiler Andrew G. , Lyu Weitao , Tessendorf Sarah A. 
Published: September 2020

AbstractIn this two-part paper, influences from environmental factors on lightning in a convective storm are assessed with a model. In Part I, an electrical component is described and applied in the Aerosol–Cloud model (AC). AC treats many types of secondary (e.g., breakup in ice–ice collisions, raindrop-freezing fragmentation, rime splintering) and primary (heterogeneous, homogeneous freezing) ice initiation. AC represents lightning flashes with a statistical treatment of branching from a fractal law constrained by video imagery.The storm simulated is from the Severe Thunderstorm Electrification and Precipitation Study (STEPS; 19/20 June 2000). The simulation was validated microphysically [e.g., ice/droplet concentrations and mean sizes, liquid water content (LWC), reflectivity, surface precipitation] and dynamically (e.g., ascent) in our 2017 paper. Predicted ice concentrations (~10 L−1) agreed—to within a factor of about 2—with aircraft data at flight levels (−10° to −15°C). Here, electrical statistics of the same simulation are compared with observations. Flash rates (to within a factor of 2), triggering altitudes and polarity of flashes, and electric fields, all agree with the coincident STEPS observations.The “normal” tripole of charge structure observed during an electrical balloon sounding is reproduced by AC. It is related to reversal of polarity of noninductive charging in ice–ice collisions seen in laboratory experiments when temperature or LWC are varied. Positively charged graupel and negatively charged snow at most midlevels, charged away from the fastest updrafts, is predicted to cause the normal tripole. Total charge separated in the simulated storm is dominated by collisions involving secondary ice from fragmentation in graupel–snow collisions.
Cloud-Resolving Model Applied to Nowcasting: An Evaluation of Radar Data Assimilation and Microphysics Parameterization
Authors: Vendrasco Eder P. , Machado Luiz A. T. , Ribeiro Bruno Z. , Freitas Edmilson D. , Ferreira Rute C. , Negri Renato G. 
Published: September 2020

AbstractThis research explores the benefits of radar data assimilation for short-range weather forecasts in southeastern Brazil using the Weather Research and Forecasting (WRF) Model’s three-dimensional variational data assimilation (3DVAR) system. Different data assimilation options are explored, including the cycling frequency, the number of outer loops, and the use of null-echo assimilation. Initially, four microphysics parameterizations are evaluated (Thompson, Morrison, WSM6, and WDM6). The Thompson parameterization produces the best results, while the other parameterizations generally overestimate the precipitation forecast, especially WDSM6. Additionally, the Thompson scheme tends to overestimate snow, while the Morrison scheme overestimates graupel. Regarding the data assimilation options, the results deteriorate and more spurious convection occurs when using a higher cycling frequency (i.e., 30 min instead of 60 min). The use of two outer loops produces worse precipitation forecasts than the use of one outer loop, and the null-echo assimilation is shown to be an effective way to suppress spurious convection. However, in some cases, the null-echo assimilation also removes convective clouds that are not observed by the radar and/or are still not producing rain, but have the potential to grow into an intense convective cloud with heavy rainfall. Finally, a cloud convective mask was implemented using ancillary satellite data to prevent null-echo assimilation from removing potential convective clouds. The mask was demonstrated to be beneficial in some circumstances, but it needs to be carefully evaluated in more cases to have a more robust conclusion regarding its use.
Computed Tomography for Acute Appendicitis Diagnosis and Confirmation in Men
Authors: Westfall Kristen M. , Purcell Laura N. , Charles Anthony G. 
Published: September 2020

Introduction The classic findings of acute appendicitis—right lower quadrant pain, anorexia, and leukocytosis—have been well known. However, emergency medicine and surgical providers continue to rely on imaging to confirm the diagnosis. We aimed to evaluate the increase in reliance on computed tomography (CT) scans for acute appendicitis diagnosis over time. Methods We conducted a retrospective study of patients ≥18 years presenting to UNC Hospitals with signs and symptoms of acute appendicitis who subsequently underwent appendectomy from 2011 to 2015. Demographic, clinical, laboratory, and pathologic data were reviewed. We evaluated the incidence of CT scans stratified by year, age, and sex. Results Within our male population, 55.2% (278/504) had classic appendicitis symptoms. Of the 278 male patients with classic appendicitis symptoms, 248 underwent CT imaging. Male patients <45 years of age were more likely to present with classic appendicitis symptoms (216/357, 60.5%) compared with patients aged 46-65 (52/108, 48.1%) or >65 (10/39, 25.6%). Of the male patients <45 years with classic appendicitis symptoms, the incidence of CT scans increased over time (68.3% in 2011, 84.2% in 2012, 92.3% in 2013, 93.9% in 2014, 92.3% in 2015). When considering the 216 CT scans that could have been avoided in our population, we calculate an approximate savings of $173 998.80 over 5 years. Conclusion The incidence of CT scans for acute appendicitis confirmation has increased over time even in men. CT scans for the diagnosis or confirmation of acute appendicitis should rarely be indicated in men aged <45 years with classic appendicitis symptoms.
The Relationship Between Childhood Circumstances and Late Life Physical and Mental Health: The Role of Adult Socioeconomic Status
Authors: Hempel Megan , Breheny Mary , Yeung Polly , Stevenson Brendan , Alpass Fiona 
Published: September 2020

Objectives: Socioeconomic status and health in childhood are linked to health outcomes in later life. Health outcomes may also be shaped by socioeconomic circumstances in adulthood and later life. This paper examined the relationship between childhood conditions and later life health and tested whether this relationship was mediated by later life economic living standards. Methods: Data from a longitudinal study of aging was combined with retrospective life history data from 787 participants from the New Zealand Health, Work and Retirement Study. Results: Significant relationships were found between childhood conditions and later life health. These relationships were mediated by economic living standards in older age, but the partial direct effect of childhood conditions on health found in early older age became fully meditated 10 years later. Conclusion: While childhood circumstances are part of this complex relationship, socioeconomic conditions in later life are vital to ensuring ongoing health into older age.
Polysomnographic Outcomes After Observation for Mild Obstructive Sleep Apnea in Children Younger Than 3 Years
Authors: Sarber Kathleen M. , von Allmen Douglas C. , Tikhtman Raisa , Howard Javier , Simakajornboon Narong , Yu Wenwen , Smith David F. , Ishman Stacey L. 
Published: September 2020

ObjectiveMild obstructive sleep apnea (OSA), particularly in young children, is often treated with observation. However, there is little evidence regarding the outcomes with this approach. Our aim was to assess the impact of observation on sleep for children aged <3 years with mild OSA.Study DesignCase‐control study.SettingPediatric tertiary care center.MethodsWe reviewed cases of children (<3 years old) diagnosed with mild OSA (obstructive apnea‐hypopnea index, 1‐5 events/h) who were treated with observation between 2012 and 2017 and had at least 2 polysomnograms performed 3 to 12 months apart. Demographic data and comorbid diagnoses were collected.ResultsTwenty‐six children met inclusion criteria; their median age was 7.2 months (95% CI, 1.2‐22.8). Nine (35%) were female and 24 (92%) were White. Their median body mass index percentile was 39 (95% CI, 1‐76). Comorbidities included cardiac disease (42.3%), laryngomalacia (42.3%), allergies (34.6%), reactive airway disease (23.1%), and prematurity (7.7%). The obstructive apnea‐hypopnea index significantly decreased from 2.7 events/h (95% CI, 1‐4.5) to 1.3 (95% CI, 0‐4.5; P =. 013). There was no significant improvement in median saturation nadir (baseline, 86%; P =. 76) or median time with end‐tidal carbon dioxide >50 mm Hg (baseline, 0 minutes; P =. 34). OSA resolved in 8 patients (31%) and worsened in 1 (3.8%). Only race was a significant predictor of resolution per regression analysis; however, only 2 non‐White children were included.ConclusionIn our cohort, resolution of mild OSA occurred in 31% of patients treated with 3 to 12 months of observation. The presence of laryngomalacia, asthma, and allergies did not affect resolution. Larger studies are needed to better identify factors (including race) associated with persistent OSA and optimal timing of intervention for these children.Level of Evidence4.
Pediatric Basilar Skull Fracture Mechanisms and Trends From 2007 to 2018
Authors: Magit Anthony , Stramiello Joshua A. , Good Raquel , Nation Javan 
Published: September 2020

ObjectivesTo evaluate the specific mechanism and trend of injury resulting in pediatric basilar skull fractures.Study DesignRetrospective chart review of a trauma database.SettingTertiary care children’s hospital.MethodsPatients ≤18 years old with basilar skull fractures were identified via the trauma database for admissions from 2007 to 2018. Patients were identified with ICD‐9 codes (801.0, 801.1, 801.2, 801.3 or 801.4) and ICD‐10 codes (S02.1, S02.10, S02.11, S02.19) for skull base fractures (International Classification of Diseases, Ninth Revision and Tenth Revision).ResultsA total of 729 patients were included: 251 females and 478 males. The 2 most common mechanisms of injury are multilevel falls and unhelmeted rider falls. Multilevel falls occur more in the toddler age group (average age, 4 years), and unhelmeted rider falls are seen in the older age group (average age, 11.2 years). Helmeted rider and motor vehicle accident basilar skull injuries are relatively uncommon. There was a spike in television/entertainment center mechanisms of injury in toddlers from 2007 to 2011 but has since decreased.ConclusionPediatric basilar skull fractures are costly to the health care system, as patients spent more time in intensive care unit beds with a charge limited to hospital rooms between $1.7 and $2.7 million per year. The protective effect of helmets is demonstrated by unhelmeted rider injuries being the second‐most common mechanism of basilar skull fractures and by helmeted rider injuries being rare. The small proportion of basilar skull fractures from motor vehicle accidents is an example of policy and behavioral changes resulting in decreased injury.
Epidemiology of Demyelinating Diseases in Korean Pediatric Patients
Authors: Yoon Hye Hyun , Park Ji Young , Kim Su Yeong , Lee Na Mi , Yi Dae Yong , Yun Sin Weon , Lim In Seok , Chae Soo Ahn 
Published: September 2020

The epidemiology of demyelinating diseases in the Korean pediatric population has not been reported to date. This study aimed to identify the epidemiology of demyelinating diseases in Korean children by using big data. The subjects were children (0-17 years old) diagnosed with acute-disseminated encephalomyelitis, multiple sclerosis, neuromyelitis optica, and Guillain-Barré syndrome enrolled in the Korean Health Insurance Review and Assessment Service (HIRA) from January 2010 to December 2017. Of 1722 enrolled children, 553 (32.1%) had acute-disseminated encephalomyelitis, 170 (9.9%) had multiple sclerosis, 68 (3.9%) had neuromyelitis optica, and 931 (54.1%) had Guillain-Barré syndrome. The male-female ratios were 1.47:1 in acute-disseminated encephalomyelitis, 1.43:1 in Guillain-Barré syndrome, 1:1.66 in multiple sclerosis, and 1:1.62 in neuromyelitis optica. Demyelinating diseases were most prevalent in summer. The prevalence differed by region, with 545 (31.6%) in Seoul and 298 (17.3%) in Gyeonggi. This study is the first to identify the incidence of demyelinating diseases in South Korea.