bluuebunny/crossref_metadata_2025_split huggingface dataset:
Adapting to Telepractice: Views of Graduate Student Clinicians
Authors: Page Christen , Wahl Robyn , Clements Brooklyn , Woody Rachel , Napier Kristen 
Published: October 2021

Purpose:The purpose of this study was to investigate the initial perceptions of speech-language pathology graduate student clinicians following implementation of telepractice using survey questions.Method:The study used thematic analysis to answer three research questions: (a) How comfortable and confident are graduate student clinicians using telepractice? (b) What are the differences between in-person and telepractice service delivery? (c) What surprised graduate student clinicians about telepractice?Results:Thirty first-year graduate student clinicians completed the survey following 5 weeks of telepractice service delivery. Findings revealed that, initially, graduate student clinicians felt nervous and uncertain about administering speech-language therapy through telepractice but eventually became more comfortable and confident with the new therapy delivery model. Differences between in-person and telepractice involved more attention to clinician's facial expressions, learning technology, managing environmental distractions at home, and the necessity for caregiver involvement. Graduate student clinicians expressed mixed perceptions of treatment effectiveness through telepractice, which may be associated with the client's attention, communication severity, and clinician's motivation. In the end, graduate student clinicians shared positive reflections of this learning experience.Conclusions:As speech therapy through telepractice continues, students will require guidance about this service delivery model. This study described graduate students' perceptions of telepractice, which may be applied to academic clinical curriculum.
Forecasting of solar radiation in photovoltaic power station based on ground‐based cloud images and BP neural network
Authors: Hu Keyong , Wang Lidong , Li Wenjuan , Cao Shihua , Shen Yuyan 
Published: October 2021

AbstractThe solar radiation near the surface is the main reason that affects photovoltaic power generation. Accurate ultra‐short‐term solar radiation prediction is the premise of photovoltaic power generation prediction. Here the cloud movement prediction method based on the ground‐based cloud images is presented. The cloud recognition, cloud matching, cloud area correction and cloud movement prediction are performed to predict the drift trajectory of the clouds that will block the sun. Then, using digital image technology, 13 kinds of feature information are extracted from the ground‐based cloud images. Then, these feature information are input into BP neural network, and the parameters of BP neural network are optimized by genetic algorithm. Through a large number of data training, a new ultra‐short‐term prediction model of solar radiation is established. Finally, through experimental comparison, the results show that the prediction accuracy of the model with the feature information of ground‐based cloud images can reach 96%, compared with the model without the feature information of ground‐based cloud images, the accuracy is improved by 5%. The proposed ultra‐short‐term solar radiation prediction model can effectively predict the radiation jumping process caused by cloud occlusion, and greatly improve the prediction accuracy, especially in cloudy weather.
Multiple classifier system for remotely sensed data clustering
Authors: Chaouche Ramdane Lamia Fatma Houbaba , Mahi Habib , El Habib Daho Mostafa , Lazouni Mohammed El Amine 
Published: October 2021

AbstractThe Multiple Classifier System (or classifier ensemble) is the consensus of different clustering algorithms that can provide high accuracy for the best partition and thus overcome the constraints of conventional approaches based on single classifiers. The MCS is divided into two stages: Partition creation and partition combining. The potential benefits of this methodology in unsupervised land cover categorization utilizing synthetic, composite, and remotely sensed data are investigated in this paper. Four clustering algorithms are used for the MCS's first step, and according to the WB index, the best‐unsupervised classification is obtained. In the second stage, relabeling and, voting approaches are then applied. The MCS's experimental results outperform the individual clustering outcomes in terms of accuracy.
Efficient video hashing based on low‐rank frames
Authors: Chen Zhenhai , Tang Zhenjun , Zhang Xinpeng , Sun Ronghai , Zhang Xianquan 
Published: October 2021

AbstractVideo hashing is a useful technology for diverse video applications, such as digital watermarking, copy detection and content authentication. This paper proposes a novel efficient video hashing based on low‐rank frames. A key contribution is the low‐rank frame calculation using the low‐rank approximation of singular value decomposition (SVD). As the large singular values of SVD are stable to digital operations, video hash extraction using low‐rank frames can provide good robustness. Since most energy is contained within the large singular values, low‐rank frames also contribute to discrimination. Moreover, two‐dimensional discrete wavelet transform (DWT) is applied to every low‐rank frame and the mean of low‐frequency DWT coefficients is selected as a hash element. Since these coefficients can represent input data approximately, hash discrimination is thus ensured. Experiments with 16,850 videos are carried out to test performances of the proposed algorithm. The results show that the proposed algorithm outperforms some well‐known video hashing algorithms in computational time and classification about discrimination and robustness.
Experimental investigation of the performance of a single‐slope solar still under Aswan climate conditions
Authors: Roshdy Mahmoud , Elhady Salama Abd , Shaban Mohamed , Esmail Mohamed F.C. 
Published: October 2021

AbstractSolar desalination has been introduced as it provides several environmental and economical advantages. In which, the desalination process depends mainly on the intensity of solar irradiance and ambient temperature. However, the desalination potential under intensive solar radiation flux of Aswan, Egypt (up to 1100 W m−2 and ≥45 °C in summer) had never been tested. This study was to experimentally evaluate the performance of two single‐slope solar stills with air gap distances of 17 and 37 cm, and a fixed water depth of 2 cm in Aswan climate. In addition, an ultrasonic atomizer was implemented to study the effect of the water atomization process on the yield and performance of the solar still. The results showed that reducing the gap distance from 37 to 17 cm increased the yield of the solar still by 70%. Using an ultrasonic atomizer, covered with a funnel, enhanced the yield by about 8.5%. The performance of the tested solar stills was compared to similar solar stills operated in other locations and the results assure the strong influence of Aswan climatic conditions on enhancing the performance and yield of solar still. Such climate is promising for solar water desalination and other sustainable energy applications.
Wideband strip antenna surrounding a ground plate
Authors: Iigusa Kyoichi , Sawada Hirokazu , Matsumura Takeshi , Kojima Fumihide 
Published: October 2021

AbstractA wideband planar antenna, which is composed of a ground plate and a strip surrounding the plate, is proposed. Wideband impedance matching with fractional bandwidth over 130% is achieved by making the distance between the strip and the ground plate stepwise so that the distance becomes wider in the tip side. The electric field in the slot line changes its direction without changing the traveling direction at the stepped section, and it is enabled to leak and radiate while traveling. It was also found that the matching frequency band can be greatly extended to the high frequency side by bending and extending the slot line to surround the ground plate. The lowest impedance matching frequency can be controlled by the strip width at the tip with keeping wideband impedance matching property.
Time evolution of magnetic activity cycles in young suns: The curious case of κ Ceti
Authors: Boro Saikia S. , Lüftinger T. , Folsom C. P. , Antonova A. , Alecian E. , Donati J.-F. , Guedel M. , Hall J. C. , Jeffers S. V. , Kochukhov O. , Marsden S. C. , Metodieva Y. T. , Mittag M. , Morin J. , Perdelwitz V. , Petit P. , Schmid M. , Vidotto A. A. 
Published: October 2021

Context. A detailed investigation of the magnetic properties of young Sun-like stars can provide valuable information on our Sun’s magnetic past and its impact on the early Earth.
Aims. We determine the properties of the moderately rotating young Sun-like star κ Ceti’s magnetic and activity cycles using 50 yr of chromospheric activity data and six epochs of spectropolarimetric observations.
Methods. The chromospheric activity was determined by measuring the flux in the Ca II H and K lines. A generalised Lomb–Scargle periodogram and a wavelet decomposition were used on the chromospheric activity data to establish the associated periodicities. The vector magnetic field of the star was reconstructed using the technique of Zeeman Doppler imaging on the spectropolarimetric observations.
Results. Our period analysis algorithms detect a 3.1 yr chromospheric cycle in addition to the star’s well-known ~6 yr cycle period. Although the two cycle periods have an approximate 1:2 ratio, they exhibit an unusual temporal evolution. Additionally, the spectropolarimetric data analysis shows polarity reversals of the star’s large-scale magnetic field, suggesting a ~10 yr magnetic or Hale cycle.
Conclusions. The unusual evolution of the star’s chromospheric cycles and their lack of a direct correlation with the magnetic cycle establishes κ Ceti as a curious young Sun. Such complex evolution of magnetic activity could be synonymous with moderately active young Suns, which is an evolutionary path that our own Sun could have taken.
Aktualisierte AWMF-S2k-Leitlinie zur obstruktiven Sialadenitis
Authors: Geisthoff Urban , Al-Nawas Bilal , Beutner Dirk , Günzel Thomas , Iro Heinrich , Koch Michael , Lell Michael , Luers Jan Christoffer , Schröder Ursula , Sproll Christoph , Teymoortash Afshin , Ußmüller Jürgen , Vogl Thomas , Wittekindt Claus , Zengel Pamela , Zenk Johannes , Guntinas-Lichius Orlando 
Published: October 2021

ZusammenfassungDie Aktualisierung der Leitlinie war ein wichtiger Schritt, um mit zunehmender Verbreitung der Sialendoskopie und anderer minimalinvasiver Verfahren Behandlungsstandards zur Therapie der Sialolithiasis und der Speichelgangstenosen zu definieren. Im Rahmen der Aktualisierung wurden die diagnostischen und therapeutischen Algorithmen dem aktuellen Wissensstand angepasst. Sie werden in diesem Artikel in verkürzter Form mit Betonung der praxisrelevanten konservativen Therapieoptionen wiedergegeben.
Abdominal and Laparoscopic Cervical Carcinoma Therapy – a Comparative Economic Assessment
Authors: Brodowski Lars , Jentschke Matthias , Hertel Hermann , Hillemanns Peter , Kohls Fabian 
Published: October 2021

Abstract
Objective The LACC (Laparoscopic Approach to Cervical Cancer) study revealed advantages in terms of overall survival and relapse risk favouring abdominal radical hysterectomy over the laparoscopic procedure. The present paper will compare the two surgical techniques from the economic point of view based on a process cost calculation.
Material/Methods A retrospective cost analysis of all radical hysterectomies from the year 2018 was done at the Hanover University Medical School based on the bottoms-up method and guided by the clinical treatment pathway.
Result Of 51 primary cases treated, 19 patients underwent radical hysterectomies, of which 8 were performed using the abdominal technique and 11 as endoscopic surgeries. 89.4% of the cancers were FIGO IB1 carcinomas. The total cost of a laparoscopic radical hysterectomy with an average hospital stay of 4.6 days came to € 2512.34, compared to an abdominal radical hysterectomy at € 2586.78 with an average hospital stay of 7.6 days. The greatest cost factor in which the laparoscopic method exceeded abdominal radical hysterectomy was the surgical procedure itself (€ 1836.75 vs. € 1411.21). Personnel represented the largest cost item in the surgical theatre (59%), so that surgery time was a significant multiplying factor. Average surgical time required for abdominal radical hysterectomy was 154 minutes, whereby the laparoscopic procedure required an average of 220.1 minutes. Inpatient care in the abdominal radical procedure cases was more costly by € 499.98 due to the
longer hospitalization and additional medication required. Profit levels, including the DRG revenues, were higher with the abdominal method than with the laparoscopic method by € 186.21 despite longer hospital stays.
Conclusion The present paper shows slightly greater profitability for the abdominal radical hysterectomy. On the other hand, this method entails longer hospitalization and a higher level of personnel deployment. Adequate occupancy management could make up for the revenue shortfall observed with the laparoscopic method.
Netzwerke zur Versorgung Parkinsonerkrankter
Authors: Ziegler Kerstin , Hoppmann Dagmar , Loidl Verena , Wagner Christian , Schroeteler Frauke , Fietzek Urban , Hermann Margit , Grill Eva , Ceballos-Baumann Andrés O. 
Published: October 2021

ZUSAMMENFASSUNGDie komplexe Symptomatik der Parkinsonerkrankung erfordert einen langfristigen, individuellen und umfassenden Therapieansatz. Spezialisierte Netzwerke sind eine Möglichkeit, diesem Bedarf zu begegnen. In Deutschland ist keine flächendeckende, netzwerkbasierte Versorgung Parkinsonerkrankter etabliert. Es fehlen in Netzwerken organisierte und in der Parkinsonbehandlung geschulte Physiotherapeuten. Die im Heilmittelkatalog geregelten, ambulanten Leistungen der Physiotherapie beruhen auf konzeptbasierten Therapieformen, die nicht den Inhalten der europäischen Physiotherapieleitlinie entsprechen. Im Modellvorhaben PaNTher – Parkinson Netzwerk Therapie erhalten Parkinsonpatienten im Großraum München die Möglichkeit einer spezialisierten, leitlinienbasierten Physiotherapie. Vorgestellt wird das Chronic Care Modell auf dessen Basis PaNTher darauf abzielt, die Versorgungsqualität zu verbessern. Stadien- bzw. symptomspezifische Therapieprogramme, ein strukturiertes Schulungsprogramm zur Steigerung der Expertise der Physiotherapeuten und eine sektorenübergreifende Zusammenarbeit zwischen kooperierenden Fachärzten, Therapeuten und dem Projektzentrum an der Parkinson-Fachklinik sind Komponenten des Programms. Teilnehmende Patienten werden im Selbstmanagement ihrer Erkrankung gestärkt. Die Wirksamkeit des Modellvorhabens PaNTher wird durch eine unabhängige, begleitende wissenschaftliche Evaluation untersucht.
Tiefe Hirnstimulation beim idiopathischen Parkinson-Syndrom
Authors: Demmel Walter , Pfister Robert 
Published: October 2021

ZUSAMMENFASSUNGWir beschreiben den Ablauf eines Eingriffs zur tiefen Hirnstimulation: Die Festlegung des Zielpunktes und des chirurgischen Zugangswegs mit der Planungssoftware auf der Basis der Datensätze von Magnetresonanz- und Computertomografie, das Anbringen des stereotaktischen Rahmens für das präzise Ansteuern des Zielpunktes, das intraoperative Setting und Optimieren der Elektrodenlage während der Operation im Wachzustand, die Implantation des Impulsgebers und die postoperative Kontrolle der korrekten Elektrodenlage. Sofern chirurgische Kontraindikationen im Vorfeld ausgeschlossen wurden, sind direkte operative Risiken gering: Das Risiko einer klinisch manifesten intrazerebralen Blutung ist mit weniger als 1 % einzuschätzen, weitere Risiken wie Implantatinfektionen, postoperative Dislokationen oder technische Defekte der Implantate liegen im niedrigen einstelligen Prozentbereich.
Long Journey on Daptomycin
Authors: Li Xuechen 
Published: October 2021

AbstractOver the past more than ten years, my laboratory has been engaged in the total synthesis, medicinal chemistry, and chemical biology studies on daptomycin. Our efforts are expected to advance new understanding of this effective cyclic lipodepsipeptide antibiotic. In this Account, this long journey is presented.1 Introduction2 Total Synthesis of Daptomycin3 Medicinal Chemistry of Daptomycin4 Molecular Comparison of Daptomycin and Kynomycin5 New Insight into How Daptomycin Exerts Bactericidal Effect6 Conclusion
Asymmetric Sequential Michael Addition and Cyclization Reactions of 2-(2-Nitrovinyl)phenols Catalyzed by Bifunctional Amino-Squaramides
Authors: Šebesta Radovan , Veverková Eva , Molnosiová Pavlína 
Published: October 2021

AbstractIn this work, we describe the Michael addition–cyclization reaction of 2-(2-nitrovinyl)phenol with two different reactive Michael donors, which lead to chiral benzopyran derivatives. Specifically, bifunctional amino-squaramides with one or two chiral units in the side chains were evaluated as catalysts in these transformations. Furthermore, the utility of selected green solvents as reaction media for these processes was also tested. The best result was achieved with methyl-cyclopentanone-2-carboxylate as the Michael donor in ethyl (–)-l-lactate with quinine-based amino-squaramide as catalyst (yield 72%, dr >99:1, ee 99%).
Three-Dimensional Intraarterial Vaso Computed Tomography Depiction of Pipeline Flex with Shield Technology Flow Diverter Stent in Ruptured Blister Aneurysm of Supraclinoid Internal Carotid Artery
Authors: Padhi Rasmiranjan , Kandasamy Sathish , Kumaran BalaSenthil 
Published: October 2021

AbstractBlister aneurysms are intracranial arterial lesions originating at nonbranching sites of the dorsal supraclinoid internal carotid artery and basilar artery.1 Among different treatment options, the use of flow-diverting devices is gaining popularity and has the potential for becoming the standard of care.2
Radiological evaluation of flow diverter braid expansion and vessel wall apposition during procedure has become useful in preventing life-threatening complications. Incomplete coverage of an aneurysm neck, kinking, or incomplete expansion and malapposition of a stent carries a significant risk for thromboembolic events.3
4
Perilunate Injury Timing and Treatment Options: A Systematic Review
Authors: van der Oest Mark J.W. , Duraku Liron S. , Artan Madina , Hundepool Caroline A. , Power Dominic M. , Rajaratnam Vaikunthan , Zuidam J. Michiel 
Published: October 2021

Abstract
Introduction Perilunate injuries are uncommon yet challenging and often missed injuries, representing 7% of all carpal traumas. Two types of injuries can be identified as follows: perilunate dislocations (PLD) and perilunate fracture-dislocations (PLFD). The purpose of this study was to conduct a systematic review and meta-analysis to establish which surgical treatment is superior for patients with perilunate injuries and the significance of delayed treatment.
Methods A total of 2056 articles were screened, and 16 articles were included. Risk of bias for case-control series and case series were assessed through the National Institute of Health study quality assessment tool. Qualitative outcomes of clinical scores for hand function were compared between different time points (acute, < 7 days; delayed 7–45 days; chronic > 45 days), open and closed reduction, and PLD and PLFD.
Results Overall, the clinical outcome scores of patients treated within 7 days are good. The results suggest that closed reduction and internal fixation (CRIF) offers slightly better outcomes than open reduction and internal fixation (ORIF) for PLFD. Patients treated 6 weeks or more after the initial injury seem to have the worst overall outcomes than patients in the acute or delayed setting. The results suggest that patients with chronic PLD have even worse outcomes than patients with chronic PLFD.
Conclusions Timing of surgery is essential for an optimal outcome. When there is a delay of treatment, the outcomes are inferior to those treated acutely. Early referral to centralized treatment units for perilunate injuries would allow for targeted treatment and facilitate research on this difficult wrist injury.
Predicting Imaging Outcomes in Acute Stroke Therapy—Comparison of Magnetic Resonance Imaging and Computed Tomography
Authors: Krishnaswamy Deepa , Cannane Seetharaman , Nedunchelian Meena , Varadharajan Shriram , Poyyamoli Santhosh , Mehta Pankaj , Cherian Mathew 
Published: October 2021

Abstract
Background Imaging of acute stroke patients in emergency settings is critical for treatment decisions. Most commonly, CT with CTA is used worldwide for acute stroke. However, MRI may be advantageous in certain settings. With advancements in endovascular clot retrieval techniques, there is a need to identify and use the best possible imaging for the diagnosis and outcome prediction of hyperacute stroke.
Methods This mixed retrospective and prospective observational study was conducted over 2 years in patients who underwent reperfusion therapies. Patients were included in this study if they had a baseline as well as follow-up noncontrast CT and diffusion-weighted imaging (DWI) MRI. We compared them for estimating final infarct size and outcomes after reperfusion therapy.
Results A total of 86 patients were included in the study. Baseline DWI found new infarcts in 33 patients compared to baseline CT. Sensitivity and specificity of CT and DWI in predicting the final infarct size was 75.3% and 76.9% and 97.2% and 92.3%, respectively. A positive correlation of 51.2% and 84.4% was noted between b-CT Alberta stroke programme early CT score (ASPECTS) and b-DWI with 72 hours DWI ASPECTS, respectively (p < 0.001). The positive predictive value of CT was 94.8% and DWI was 98.6%. None of the patients had reversible hyperintensities in the follow-up DWI.
Conclusion MRI is more sensitive and specific than noncontrast CT in predicting final infarct volume. It predicts final outcomes better and could be an alternative if available in acute stroke settings.
Does Surgery for Cruciate Ligament and Meniscus Injury Increase the Risk of Comorbidities at 2 Years in the Military System?
Authors: Cook Chad E. , Sheean Andrew J. , Zhou Liang , Min Kyong S. , Rhon Daniel I. 
Published: October 2021

AbstractThis study aims to determine whether surgery for cruciate ligament (anterior or posterior) or meniscus injury increased risks of subsequent comorbidities in beneficiaries of the Military Health System. The study was a retrospective case-control design in which individuals with cruciate or meniscus injuries were divided into two groups (surgery or none). Data were pulled 12 months prior and 24 months following each respective event and presence of comorbidities were compared between the two groups. Bivariate analyses and logistic regression were used to determine if surgery increased the odds of comorbidities. Participants included 1,686 with a cruciate ligament injury (30.1% treated surgically) and 13,146 with a meniscus injury (44.4% treated surgically). Bivariate comparisons of surgery versus nonsurgical treatment found multiple significant differences. After adjusting for covariates, a significant (p < 0.05) protective effect was seen only for meniscus surgery for concussion, insomnia, other mental health disorders, depression, and substance abuse. Surgery had no increased/decreased risk of comorbidities for cruciate ligament injuries. For meniscus injuries, surgery demonstrated a protective effect for six of the comorbidities we assessed. The treatment approach (surgery vs. nonsurgical) did not change the risk of comorbidities in those with a cruciate ligament injury. It is noteworthy that three of the six comorbidities involved mental health disorders. Although the study design does not allow for determination of causation, these findings should compel future prospective study designs that could confirm these findings.