bluuebunny/crossref_metadata_2025_split huggingface dataset:
(208) Lacrimosa: A case that missed the Slivan state?
Authors: Vokrouhlický D. , Ďurech J. , Hanuš J. , Ferrais M. , Jehin E. , Benkhaldoun Z. 
Published: March 2021

Context.The largest asteroids in the Koronis family (sizes ≥25 km) have very peculiar rotation state properties, with the retrograde- and prograde-rotating objects being distinctly different. A recent re-analysis of observations suggests that one of the asteroids formerly thought to be retrograde-rotating, 208 Lacrimosa, in reality exhibits prograde rotation, yet other properties of this object are discrepant with other members this group.Aims.We seek to understand whether the new spin solution of Lacrimosa invalidates the previously proposed model of the Koronis large members or simply reveals more possibilities for the long-term evolutionary paths, including some that have not yet been explored.Methods.We obtained additional photometric observations of Lacrimosa, and included thermal and occultation data to verify its new spin solution. We also conducted a more detailed theoretical analysis of the long-term spin evolution to understand the discrepancy with respect to the other prograde-rotating large Koronis members.Results.We confirm and substantiate the previously suggested prograde rotation of Lacrimosa. Its spin vector has an ecliptic longitude and latitude of (λ,β) = (15° ± 2°, 67° ± 2°) and a sidereal rotation periodP= 14.085734 ± 0.000007 h. The thermal and occultation data allow us to calibrate a volume equivalent size ofD= 44 ± 2 km of Lacrimosa. The observations also constrain the shape model relatively well. Assuming uniform density, the dynamical ellipticity is Δ = 0.35 ± 0.05. Unlike other large prograde-rotating Koronis members, Lacrimosa spin is not captured in the Slivan state. We propose that Lacrimosa differed from this group in that it had initially slightly larger obliquity and longer rotation period. With those parameters, it jumped over the Slivan state instead of being captured and slowly evolved into the present spin configuration. In the future, it is likely to be captured in the Slivan state corresponding to the proper (instead of forced) mode of the orbital plane precession in the inertial space.
Exploration of Intellectual Property Protection Strategies for Cross-border E-commerce
Authors: Lin ChunYi 
Published: March 2021

Abstract—
The continued advancement of the “One Belt, One Road” strategy, coupling with the rapid development of the Internet, has provided a convenient online platform for cross-border e-commerce enterprises. China’s cross-border e-commerce enterprises have made unprecedented progress. However, at the same time, the problem of intellectual property infringement in cross-border e-commerce has become increasingly prominent, seriously restricting the development of China’s cross-border e-commerce enterprises. On the basis of analyzing the intellectual property strategy of enterprises.
This paper describes the necessity of creating an intellectual property strategy for cross-border e-commerce enterprises, and proposes strategies for building relevant intellectual property strategies aimed at the weak awareness of intellectual property and the copycatting of enterprise products, which are common in the operation of cross-border e-commerce enterprises in China.
Aufsuchende zahnärztliche Versorgung von Kindern und Jugendlichen mit Pflegegrad oder Eingliederungshilfe – eine Auswertung von Abrechnungsdaten der KZBV
Authors: Schmidt Peter , Fricke Oliver , Schulte Andreas G. 
Published: March 2021

Zusammenfassung
Hintergrund Bislang liegen keine Daten vor, inwieweit Kinder und Jugendliche, die einen Pflegegrad haben oder Eingliederungshilfe beziehen (KiJu-PflEh), bei einer aufsuchenden zahnmedizinischen Betreuung und Versorgung berücksichtigt wurden.
Ziel Die Untersuchung von Abrechnungsdaten der Kassenzahnärztlichen Bundesvereinigung (KZBV) zur Inanspruchnahme von Leistungen bei KiJu-PflEh, die zur Behandlung durch einen Zahnarzt aufgesucht wurden.
Material und Methode Auf der Basis von sechs Leistungspositionen (Abrechnungsjahr 2019) wurde von der KZBV eine Filterung der GKV-Versicherten (0–17 Jahre) durchgeführt. Die generierten Datensätze der Studiengruppe (KiJu-PflEh) und der Kontrollgruppe (alle KiJu) wurden zur Aufbereitung anonymisiert der UW/H zur Verfügung gestellt.
Ergebnis Die Studiengruppe umfasste 1602 KiJu-PflEh (mittleres Alter: 11,6 Jahre). Das Geschlechterverhältnis von ♂ zu ♀ war 2:1. Bei 56,0% der KiJu-PflEh wurde eine Befunderhebung oder Beratung abgerechnet. Die Inanspruchnahme individualprophylaktischer (IP) Maßnahmen war wie folgt: Erhebung eines Mundhygienestatus – IP1 (47,5%), Mundgesundheitsaufklärung – IP2 (46,1%), Lokale Fluoridierung der Zähne – IP4 (63,1%), Fissurenversiegelung je Zahn – IP5 (30,1%). Im Vergleich zu KiJu wurden bei KiJu-PflEh statistisch signifikant weniger individualprophylaktische Maßnahmen abgerechnet und ausgeführt (KiJu: 85,7%; KiJu-PflEh: 46,7%).
Schlussfolgerung Erstmals wurde aufgezeigt, dass KiJu-PflEh im Vergleich zu Gleichaltrigen der Allgemeinbevölkerung ungenügend zahnmedizinisch betreut und versorgt sind. Eine Intensivierung ist dringend angeraten, da KiJu-PflEh zur Personengruppe mit einem erhöhten Kariesrisiko zählen. Um gezielt Präventionsangebote für alle KiJu-PflEh zu implementieren, sind auch medizinische Informationen notwendig. Daher ist die Einführung einer Zentraldatenbank, die eine zahn- und allgemeinmedizinische Vernetzung ermöglicht, anzustreben. Ferner besteht ein Bedarf an wissenschaftlichen Projekten zur Erhebung von kariesepidemiologischen Primärdaten bei KiJu-PflEh, um die vorliegenden Aussagen dieser Pilotuntersuchung zu verifizieren.
Homozygous Missense Mutation on Exon 22 of PKHD1 Gene Causing Fatal Autosomal Recessive Polycystic Kidney Disease
Authors: Sathyan Sajina , Pournami Femitha , Madhavilatha Gopala Krishna , Tuteja Amrit , Nandakumar Anand , Prabhakar Jyothi , Jain Naveen 
Published: March 2021

AbstractAutosomal recessive polycystic kidney disease, described as a congenital hepatorenal fibrocystic syndrome, is a significant inherited cause of end stage renal failure in children with reported incidence of 1 in 20,000 live births. The clinical spectrum is wide. Antenatal findings of echogenic reniform enlarged kidneys associated with evidence of intrauterine renal failure in the form of severe oligoamnios are pathognomonic. Postnatal illness ranges from fatal respiratory failure due to pulmonary hypoplasia in neonates to chronic kidney disease in children, or later presentation of ductal plate malformation and portal hypertension. Advances in genetic diagnostic techniques have allowed recognition of genotypes. We report a novel homozygous missense variant on exon 22 of PKHD1 gene (chr6:51915067G > A; c.2167C > T) that results in the amino acid substitution of cysteine for arginine at codon 723 (p.Arg723Cys). The affected neonate presented with antenatal anhydramnios, classical radiological features, and severe hypoxic respiratory failure likely due to pulmonary hypoplasia and succumbed. The parents were found to be heterozygous carriers. Detection of the specific variant in the proband facilitated prenatal investigation in the next pregnancy.
Surgical Cutdown Avoids Vascular Complications in Transcatheter Aortic Valve Replacement in Calcified and Small Femoral Arteries
Authors: Burri Melchior , Ruge Hendrik , Erlebach Magdalena , Lange Rüdiger 
Published: March 2021

AbstractBackground Third-generation transcatheter heart valves (THV) are predominantly implanted through a percutaneous, transfemoral access. To reduce vascular complications, we selectively performed surgical vascular access (cutdown) in patients with particular calcified or small femoral arteries. We aim to review our experience with this approach.Methods All patients who underwent transfemoral transcatheter aortic valve replacement (TAVR) with a third-generation THV at our institution between March 2014 and April 2019 were included in the study. All available computerized tomography studies were reassessed for access vessel diameter and visual graduation of calcifications. Vascular complications are reported according to Valve Academic Research Consortium-2 criteria.Results A total of 944 patients were included. Among them, 879 patients underwent a percutaneous access and 65 patients underwent surgical cutdown. Also, 459 Evolut R/PRO and 420 Sapien 3/ultra were implanted percutaneously and 40 Evolut R/PRO and 25 Sapien 3 were implanted with a surgical cutdown. Patients with surgical cutdown were older (80.0 ± 7.5 vs. 83.8 ± 7.5 years, p < 0.001), had smaller femoral arteries (8.0 ± 1.6 vs. 7.6 ± 1.6 mm, p = 0.034) and more severe vessel calcifications (17.5 vs. 1.0%, p < 0.001). Procedure time was similar for cutdown and percutaneous access (64.0 vs. 64.5 minutes, p = 0.879). With percutaneous access, 80 major vascular complications (10%) occurred, whereas with surgical cutdown, no major vascular complications occurred (p < 0.005). No wound infection occurred after surgical cutdown. The mean length of stay was 8 days in both groups.Conclusion Surgical cutdown for vascular access avoids vascular complications in patients with small or severely calcified femoral arteries.
Experience with Diagnosis and Management of Distal Radioulnar Joint Instability
Authors: Hearon Bernard F. , Frantz Lisa M. , Helsper Elizabeth A. , Morris Harry A. 
Published: March 2021

Abstract
Objective The aim of this study is to review our cumulative experience with diagnosis and treatment of distal radioulnar joint (DRUJ) instability and to present our treatment algorithm.
Materials and Methods Retrospective review identified 112 patients who had 126 episodes of care for DRUJ instability at a single institution over a 21-year period. Those diagnosed acutely or subacutely were treated with immobilization of the wrist and elbow for 6 weeks, while those with chronic instability had anatomic reconstruction of the dorsal and palmar radioulnar ligaments with tendon autograft or an alternative arthroscopic treatment with our thermal annealing technique. Short-term treatment failures and surgical complications were recorded. Nonparametric statistical tests were used to analyze key long-term outcome measures including ulnar wrist pain and DRUJ stability indicated by the dorsopalmar stress test.
Results At mean 7-year follow-up, eight patients in the acute-injury cohort had statistically significant improvements in wrist pain and DRUJ instability (p < 0.001). In both the 22-patient anatomic reconstruction cohort and the 37-patient arthroscopically treated group, there were also statistically significant improvements in wrist pain and DRUJ stability (p < 0.001) at mean 9-year follow-up. The majority of patients in all three groups was satisfied with treatment outcome, though some required secondary procedures.
Conclusion Early clinical diagnosis of DRUJ instability using the dorsopalmar stress test provides an opportunity for effective nonsurgical treatment. For chronic presentation, we recommend our arthroscopic thermal annealing technique for mild or moderate instability and open anatomic reconstruction of the radioulnar ligaments for severe instability.
Level of Evidence This is a Level IV, therapeutic study.
Ferromagnetism in two-dimensional CrTe2 epitaxial films down to a few atomic layers
Authors: Sun Yizhe , Yan Pengfei , Ning Jiai , Zhang Xiaoqian , Zhao Yafei , Gao Qinwu , Kanagaraj Moorthi , Zhang Kunpeng , Li Jingjing , Lu Xianyang , Yan Yu , Li Yao , Xu Yongbing , He Liang 
Published: March 2021

Two-dimensional (2D) van der Waals ferromagnetic materials have attracted intense attention due to their potential impact on both fundamental and applied research studies. Recently, a new 2D ferromagnet CrTe2, prepared by mechanical exfoliation or chemical vapor deposition, has gained interest due to its novel magnetic properties. In this work, high quality CrTe2 epitaxial thin films were prepared on GaAs (111)B substrates using solid source molecular beam epitaxy, with the thickness varying from 35 to 4 monolayers (MLs). The magnetic easy axis of all the films is oriented along the c-axis. A Curie temperature of 205 K is found in the 35 ML CrTe2 film, measured by the temperature-dependent anomalous Hall resistance (RAHE). Importantly, even when the film thickness decreases to 4 MLs, a robust out-of-plane ferromagnetism with a Curie temperature of 191 K has been demonstrated. This finding could pave the way for investigating the fundamental studies in 2D ferromagnetism and has great significance in device applications.
Striving for impartiality
Authors: Wilson Lauren , Walsh Dave 
Published: March 2021

Abstract
In the context of interpreter-assisted police interviews (IAPIs) it is essential for both police officers and
interpreters to maintain impartiality at all times. However, there are numerous obstacles on the way towards achieving this
fundamental goal. The present study examines whether and how the different conflicts in communication are constructed and
controlled within the different phases of police interviews, using a self-administered questionnaire that explores the perceptions
of police officers and interpreters. Three areas of conflict pertinent to impartiality were identified: role,
trust and emotion. The differing assumptions about the roles of police officers and
interpreters, and the respective differing expectations, appear to create barriers in the achievement of trust and in the working
relationship as a whole, which may well affect the aim of IAPIs (i.e. to gather reliable information) and alter the interview
outcomes. In addition, both police officers and interpreters have strong emotional experiences during IAPIs; however, neither
group appear to make conscious efforts to engage in coping strategies.
“We'll be Able to Take Care of Ourselves” – A Qualitative Study of Client Attitudes Toward Implementing Buprenorphine Treatment at Syringe Services Programs
Authors: Frost Taeko , Deutsch Sarah , Brown Shoshana , Lemien Ellen , Cunningham Chinazo O. , Fox Aaron D. 
Published: March 2021

Background Syringe services programs (SSPs) complement substance use disorder treatment in providing services that improve the health of people who use drugs (PWUD). Buprenorphine treatment is an effective underutilized opioid use disorder treatment. Regulations allow buprenorphine prescribing from office-based settings, potentially including SSPs although few studies have examined this approach. Our objective was to assess the attitudes among PWUD toward the potential introduction of buprenorphine treatment in an SSP. Methods In this qualitative study, we recruited 34 participants who were enrolled at a New York City-based SSP to participate in one of seven focus group sessions. The focus group facilitators prompted participants to share their thoughts in five domains: attitudes toward (1) medical clinics; (2) harm reduction in general; (3) SSP-based buprenorphine treatment; (4) potential challenges of SSP-based treatment; and (5) logistical considerations of an SSP-based buprenorphine treatment program. Four researchers analyzed focus group transcripts using thematic analysis. Results Of the 34 participants, most were white (68%), over the age of 40 years old (56%), and had previously tried buprenorphine (89%). Common themes were: 1) The SSP is a supportive community for people who use drugs; 2) Participants felt less stigmatized at the SSP than in general medical settings; 3) Offering buprenorphine treatment could change the SSP's culture; and 4) SSP participants receiving buprenorphine may be tempted to divert their medication. Participants offered suggestions for a slow intentional introduction of buprenorphine treatment at the SSP including structured appointments, training medical providers in harm reduction, and program eligibility criteria. Conclusion Overall, participants expressed enthusiasm for onsite buprenorphine treatment at SSPs. Research on SSP-based buprenorphine treatment should investigate standard buprenorphine treatment outcomes but also any effects on the program itself and medication diversion. Implementation should consider cultural and environmental aspects of the SSP and consult program staff and participants.
Eigen microstates and their evolutions in complex systems
Authors: Sun Yu , Hu Gaoke , Zhang Yongwen , Lu Bo , Lu Zhenghui , Fan Jingfang , Li Xiaoteng , Deng Qimin , Chen Xiaosong 
Published: March 2021

Abstract
Emergence refers to the existence or formation of collective behaviors in complex systems. Here, we develop a theoretical framework based on the eigen microstate theory to analyze the emerging phenomena and dynamic evolution of complex system. In this framework, the statistical ensemble composed of M microstates of a complex system with N agents is defined by the normalized N × M matrix
A
, whose columns represent microstates and order of row is consist with the time. The ensemble matrix
A
can be decomposed as

A
=

∑

I
=
1

r

σ

I

U

I

⨂

V

I

, where

r
=
min
(
N
,
M
)

, eigenvalue σ

I
behaves as the probability amplitude of the eigen microstate
U

I
so that

∑

I
=
1

r

σ

I

2

=
1

and
U

I
evolves following
V

I
. In a disorder complex system, there is no dominant eigenvalue and eigen microstate. When a probability amplitude σ

I
becomes finite in the thermodynamic limit, there is a condensation of the eigen microstate
U

I
in analogy to the Bose–Einstein condensation of Bose gases. This indicates the emergence of
U

I
and a phase transition in complex system. Our framework has been applied successfully to equilibrium three-dimensional Ising model, climate system and stock markets. We anticipate that our eigen microstate method can be used to study non-equilibrium complex systems with unknown order-parameters, such as phase transitions of collective motion and tipping points in climate systems and ecosystems.
Learning design for the natural resonance concept of the rope system with a “Gambo”
Authors: Kurniawan E , Aminah N S , Harjana  
Published: March 2021

Abstract
Gambo as a traditional stringed musical instrument from Mbojo tribe (NTB) is increasingly missing its existence among the younger generation. This instrument has never been used as a media for learning physics, even though it can show the phenomena of vibration, waves and sound. This paper aims to explain the learning design of contruction the concept of natural resonance using a gambo system and involving advanced spectrum applications of smartphone and evidence the effectiveness of its implementation based on student understanding about the concept and its responses. The learning activity is guided inquiry which involves 28 senior high school students of Kota Bima grade XI. Data was collected through document studies and concept understanding tests. The results of test were analyzed using descriptive statistics and using the normalized gain test, while the analysis of student responses to learning activities used a likert scale. Based on studies and research results, it was concluded that the learning of the natural resonance concept of the string system using Gambo has been well designed and can be implemented easily and effectively. Understanding of students’ concepts increases significantly, and gets a good response from students.
Internet of things for aquaculture in smart crab farming
Authors: Pitakphongmetha Jumras , Suntiamorntut W. , Charoenpanyasak S. 
Published: March 2021

Abstract
Internet of Things (IoT) has been introduced and applied in many applications and become an emerging technology in digital era. The major economic in southern part of Thailand is aquaculture such as fishery, shrimp, pearl, mud crab and so on. The concept of IoT which is about connecting the sensors and gathering all necessary data to cloud platform allowing us to compute, control measure, and manage farm efficiently. Soft shell crab is most important ingredient in Chinese, Japanese, and co-fusion menu requiring in many premium restaurants. Unfortunately, the productivity of soft-shell crab industry is very small due to a low survival rate in raising process and lacking of small crab. In tradition al soft-shell crab farm, each small crab has been grown separately of a small box in the old shrimp pond. Farmer has to feed them individually and monitor them every 4 hours in order to avoid soft-shell crab turns to hard shell. In this work, thus, we propose to apply IoT and intelligent system to improve the productivity in the traditional soft-shell crab farm. Water quality sensors, motion sensors, and feeding system are designed and developed to enhance the survival capability of soft-shell crab farm. Meanwhile, with the same concept, our system can be applied in another aquaculture to be smarter farm and be precision aquaculture in the southern path of Thailand.
Investigation of the influence of tank geometry on a vessel’s stability under free surface effect when in coastal waters
Authors: Fuge Ross , Rizvi Jahir 
Published: March 2021

Abstract
Tank sizes on liquid cargo carriers are becoming larger to minimise wasted spaces on-board and maximise payload capacity. This trend can significantly affect a vessel’s stability and its design. Therefore, this paper investigates whether spherical tanks provide better stability than a traditional tank formed with vertical sides under a range of free surface scenarios. The motions of a model liquid cargo carrier hull with various sizes of tanks and various fill levels has been investigated in a coastal basin. Regular waves of various heights and frequencies have been generated and the rolling motions of the hull have been documented. Results have shown that spherical tanks offer less free surface effects compared to vertical sided tanks thus create less rolling motion. In contrast, when the hull has four tanks, all of those with free surfaces, the vertical sided tanks provide better stability up to 50% fill levels whereas spherical tanks induce less roll between the fill levels 50% and 100%.
The capacity analysis of dynamic positioning for semi-submersible vessel
Authors: Guo Yulong , Zhang Fujie , Ma Weixin 
Published: March 2021

Abstract
In this paper, the Dynamic Position model (DP) of semi-submersible vessel was established in Ariane system based on static analysis and standards, to obtain DP capability polar plot under different failure pattern. Through the time-domain simulation, PID control theory and Kalman filtering method were used in DP accuracy analysis. Analysis results, such as ship motion, DP accuracy and propeller variation, could be provided for safety and reliability check in engineering practice.
CFD numerical simulation of a container ship turning motion
Authors: Zixin Wu , Weimin Chen , Hao Hao 
Published: March 2021

Abstract
The ship turning motion can reflect the turning characteristics of the ship and is closely related to the navigation safety of the ship. In the turning performance test, the trajectory drawn by the center of gravity of the ship is called the turning circle. The turning circle is an important indicator to characterize the turning performance of a ship. At present, the results of ship turning obtained by numerical calculations are still very different from the test ones. In this paper, the free turning motion of a container ship is simulated by a commercial software which is called STARCCM+. In order to reduce the amount of calculation, a body-force propeller model is adopted to replace the real propeller. Through the global solution of the fully viscous flow field, the characteristic parameters and the motion track of the ship turning motion can be gotten. The ship’s motion trajectory and the parameters of the turning motion obtained by numerical prediction are in good agreement with the test values, which fully proves the applicability and reliability of the proposed method in numerical prediction.