bluuebunny/crossref_metadata_2025_split huggingface dataset:
Efficient and robust power and energy management for large clusters of plug‐in electric vehicles and distribution networks
Authors: Kanellos Fotios D. , Kalaitzakis Kostas , Psarras Ioannis , Katsigiannis Υannis 
Published: April 2022

AbstractIn this paper, an efficient and robust power and energy management for large clusters of plug‐in electric vehicles (PEVs) and distribution networks is proposed. The method aims to minimise the charging cost of large clusters of PEVs in real time while ensuring distribution network normal operation and satisfying a large number of constraints from PEV level up to distribution network. The design of the method ensures very low dependence on forecast errors of critical quantities such as electricity price while it can be easily integrated with conventional optimal power flow algorithms. To this end, innovative virtual differential operation costs are assigned to clusters of PEVs. Moreover, an innovative definition of the flexibility of a cluster of PEVs to change its power is introduced while a simple idea based on the principle of the selection of the fittest is used to achieve efficient power dispatch to the PEVs with minimal computational requirements. The efficiency and the robustness of the proposed method are proved by detailed simulations of several operation scenarios of a realistic distribution network with large penetration of PEVs and renewable energy sources.
An integrated dynamic voltage control strategy in active distribution network based on improved model predictive control
Authors: Li Yize , Wang Yinfeng , Ye Hongbo , Xie Wei , Hua Bin , Lu Chao 
Published: April 2022

AbstractThe distribution networks have more frequent and fast voltage fluctuations with the large‐scale access of distributed energy resources and electric vehicles. Based on remote terminal unit (RTU) and distribution terminal unit (DTU), traditional hierarchical control methods are difficult to achieve rapid global coordinated voltage regulation due to static modeling. For this purpose, this paper proposes an integrated dynamic voltage control strategy which integrates the objectives of local voltage control and secondary voltage control. First, simplified dynamic models of controllable equipment in active distribution network are established instead of the static models. On this basis, the state‐space prediction model of the control system is established. Then, based on the improved model predictive control (IMPC), the integrated dynamic voltage control strategy realizes rapid and global coordinated control through state prediction, rolling optimization and real‐time feedback correction. Numerical results show that the proposed strategy can achieve fast global coordinated voltage control in the time scale of seconds.
High resolution representation‐based Siamese network for remote sensing image change detection
Authors: Liang Zheng , Zhu Bin , Zhu Yaoxuan 
Published: April 2022

AbstractChange detection of high‐resolution remote sensing images can help to accurately understand the changes in the earth's surface. Advanced methods based on deep features have some limitations, including limited accuracy, poor detection effect, and poor robustness. The main reason is that these frameworks have poor feature extraction capabilities, insufficient context aggregation, and inadequate discrimination capabilities. In order to solve these problems, SiHDNet, a Siamese segmentation network based on deep, high‐resolution differential feature interaction, is proposed. Specifically, after the high‐resolution features of the dual‐temporal image are extracted, the difference map is generated through a special fusion module, which contains sufficient and effective change information. Finally, the final binary change map is obtained through the improved spatial pyramid pooling module. Experiments are conducted on the newly released building change detection data set LEVIR‐CD and the challenging remote sensing image change detection data set Google Data Set. Five benchmark methods are chosen. The results of quantitative analysis and qualitative comparison show that SiHDNet is superior to the five benchmark methods. The results of the ablation experiment also verify the effectiveness of this method.
Multi‐hop similarity‐based‐clustering framework for IoT‐Oriented Software‐Defined wireless sensor networks
Authors: Shafique Ayesha , Asad Muhammad , Aslam Muhammad , Shaukat Saima , Cao Guo 
Published: April 2022

AbstractThe performance of Internet of Things (IoT)‐based Wireless Sensor Networks (WSNs) depends on the routing protocol and the deployment technique in modern applications. In a plethora of IoT‐WSNs applications, the IoT nodes are essential equipment to prolong the network lifetime with limited resources. Data similarity‐based clustering protocols exploit the temporal correlation among the neighbouring sensor nodes through the subset of data. In bendy supervision, IoT‐based Software Defined WSNs provide an optimistic resolution by allowing the control logic to be separated from the sensor nodes. The benefit of this SDN‐based IoT architecture, allows the unified control of the entire IoT network, making it easier to implement on‐demand network management protocols and applications. To this end, in this paper, we design a Multi‐hop Similarity‐based Clustering framework for IoT‐oriented Software‐Defined wireless sensor Networks (MSCSDNs). In particular, we construct data‐similar application‐aware clusters in order to minimise the communication overhead. Also, we adapt inter‐cluster and intra‐cluster multi‐hop communication using adaptive normalised least mean square and merged them with the proposed MSCSDN framework that helps prolong the network lifespan. The proposed framework is compared with the state‐of‐the‐art approaches in terms of network lifespan, stability period, instability period, report delay, report delivery, and cluster leader nodes generations. The MSCSDN achieves optimal data accuracy concerning the collected data.
Letaler Verlauf einer fulminanten nekrotisierenden Fasziitis und Clostridium-perfringens-Infektion nach Resektion eines Weichteil-Sarkoms
Authors: Sogorski Alexander , Bernstorff Maria , Lehnhardt Marcus , Behr Björn , Wagner Johannes Maximilian 
Published: April 2022

ZusammenfassungVorgestellt wird der Fall eines 57-jährigen Patienten mit letalem Verlauf nach Resektion eines Myxofibrosarkoms am Oberschenkel. Auf dem Boden einer nekrotisierenden Fasziitis bei Mischinfektion von Staphylococcus lugdunensis und Clostridium perfringens mit Ausbildung ausgedehnter Myonekrosen kam es zu einem septischen Schock mit Hämolyse und Multiorganversagen. Die Autoren zeichnen den fulminanten Verlauf dieser sehr seltenen Komplikation nach onkologischer Resektion nach und diskutieren das chirurgische Vorgehen anhand aktueller Literatur.
Einflussfaktoren auf die veränderte Lebensqualität nach postbariatrischer Abdominoplastik
Authors: Bienert Johanna Dorothea Charlotte Wanda , Bertolini Julia , Bertolini Roland , Drücke Daniel B. H. 
Published: April 2022

Zusammenfassung
Einleitung Die Verbesserung der gesundheitsbezogenen Lebensqualität (HRQoL) durch postbariatrische Straffungsoperationen und deren Effekte auf die Gewichtsstabilität im Langzeitverlauf gelten als gesichert. Welche Einflussfaktoren dabei eine Rolle spielen, wurde im Rahmen dieser Studie untersucht.
Patienten, Materialien und Methoden Für die Datenanalyse wurde die HRQoL vor und nach der Abdominoplastik mittels des „36-Item Short-Form Health Survey“-Fragebogens erhoben. Zusätzlich wurde die Häufigkeit des Auftretens von Meteorismusbeschwerden erfasst und überprüft, ob dieses Auftreten in Zusammenhang mit einer simultan zur Abdominoplastik durchgeführten Rectusscheidenplikation steht. Einschlusskriterium war eine Adipositas ≥ I° vor der Gewichtsabnahme. Ausschlusskriterien waren eine postoperative Neumanifestation einer schwerwiegenden, von der Abdominoplastik unabhängigen Erkrankung sowie eine Schwangerschaft im Beobachtungszeitraum. Die Ergebnisse wurden mit der deutschen Normpopulation (Norm) verglichen.
Resultate Für die körperliche Summenskala (KSK) ergab sich eine signifikant bessere postoperative HRQoL (präOP: 40,19 ± 12,27; postOP: 47,72 ± 9,89; p < 0,001). Präoperativ lagen die KSK und die PSK (psychische Summenskala) statistisch signifikant unterhalb des Wertes der Norm (KSK: p < 0,001; PSK: p < 0,01). Postoperativ ergaben sich keine signifikanten Unterschiede (KSK: p = 0,051; PSK: p = 0,118). Patienten mit einer zusätzlichen Rectusscheidenplikation (n = 9) litten signifikant häufiger unter Meteorismusbeschwerden > 4/Woche als Patienten ohne diesen Operationsschritt (n = 21) (p < 0,05). Im Vergleich der Patienten mit einer Meteorismussymptomatik < 4/W gegenüber > 4/W hatten erstere eine signifikant bessere Vitalität (< 4/W: 61,09 ± 24,95; > 4/W: 34,29 ± 21,49; p < 0,05) und einen besseren allgemeinen Gesundheitszustand (< 4/W: 68,04 ± 23,23; > 4/W: 44,71 ± 27,8; p < 0,05). Patienten mit einer Meteorismussymptomatik > 4/W hatten gegenüber der Norm eine schlechtere Vitalität (p < 0,05).
Schlussfolgerung Die Analyse der erhobenen Studiendaten lässt den Schluss zu, dass bei ehemals adipösen Patienten nicht nur von einer postoperativen Verbesserung der HRQoL ausgegangen werden kann, sondern auch von einer postoperativen Angleichung dieser an die Norm. Ferner führt eine zusätzlich zur Abdominoplastik ausgeführte Rectusscheidenplikation häufiger zu einer die HRQoL verschlechternden Meteorismussymptomatik. Das Vorliegen einer depressiven Störung ist ein guter Prädiktor für ein schlechteres HRQoL-Outcome.
Fadenmaterial in der Phlebologie
Authors: Witt Antonia , Bruning Guido , Woitalla-Bruning Jasmin 
Published: April 2022

ZusammenfassungEs gibt unterschiedliche Herangehensweisen für den Einsatz von Nahtmaterialien in der Phlebologie. Sie werden in Abhängigkeit von der jeweiligen Schule und vom vorhandenen Fadensortiment im Haus bestimmt. Allerdings bestehen leitlinienbezogene Empfehlungen, z.B. dass der Faden zum Abbinden der Vena saphena magna bzw. der Vena saphena parva mittels nicht resorbierbaren Fadens zur Rezidivprophylaxe empfohlen werden kann 1.Der optimale Faden, der alle Vorteile vereint, existiert nicht. Es gilt daher, individuelle Entscheidungen zur Fadenwahl zu treffen und dabei insbesondere die durch das Gewebe an einen Faden gestellten Anforderungen zu berücksichtigen.Mit diesem Artikel wollen wir den Lesern die Eigenschaften verschiedener Fäden näherbringen, die Entscheidung für bestimmte Nahtmaterialien in der operativen Phlebologie erklären und durch Bilder veranschaulichen.
Real-world prevalence of endoscopic findings in patients with gastroesophageal reflux symptoms: a cross-sectional study
Authors: Weissman Simcha , Chris-Olaiya Abimbola , Weber Andrew T. , Mehta Tej I. , Doherty Bryan , Nambudiri Vinod , Atoot Adam , Aziz Muhammad , Tabibian James H. 
Published: April 2022

Abstract
Background and study aims Data regarding endoscopic findings and symptom correlation in patients with gastroesophageal reflux disease (GERD) symptoms are largely limited to single-center experiences. We performed a nationwide study to examine the association between patient-reported GERD symptoms and clinically relevant endoscopic findings.
Patients and methods Using the National Endoscopic Database, we retrospectively identified all esophagogastroduodenoscopies (EGDs) performed for GERD symptoms from 2000 to 2014. Patients were categorized into three symptom groups: 1) typical reflux only (R); 2) airway only (A); and 3) both R and A (R + A). Outcomes were the point prevalence of endoscopic findings in relation to patient-reported GERD symptom groups. Statistical analyses were performed using R.
Results A total of 167,459 EGDs were included: 96.8 % for R symptoms, 1.4 % for A symptoms, and 1.8 % for R + A symptoms. Of the patients, 13.4 % had reflux esophagitis (RE), 9.0 % Barrett’s esophagus (BE), and 45.4 % hiatal hernia (HH). The R + A group had a significantly higher point prevalence of RE (21.6 % vs. 13.3 % and 12 %; P < 0.005) and HH (56.9 % vs. 45.3 % and 38.3 %; P < 0.005) compared to the R or A groups, respectively. The R group had a significantly higher point prevalence of BE compared to the A or R + A groups, respectively (9.1 % vs. 6.1 % and 6.1 %, P < 0.005).
Conclusions On a national level, patients experiencing R + A GERD symptoms appear more likely to have RE and HH, while those with only R symptoms appear more likely to have BE. These real-world data may help guide how providers and institutions approach acid-suppression therapy, set thresholds for recommending EGD, and develop management algorithms.
Nicht-suizidales selbstverletzendes Verhalten – Einblicke in ein wenig bekanntes plastisch-chirurgisches Patient*innenkollektiv
Authors: Köllensperger Eva , Walter Clara , Germann Günter , Engel Holger , Reichenberger Matthias 
Published: April 2022

Zusammenfassung
Hintergrund und Fragestellung Nicht-suizidales selbstverletzendes Verhalten (NSSV) ist trotz einer hohen Prävalenz bei Jugendlichen und jungen Erwachsenen ein außerhalb der Psychiatrie nur wenig bekanntes Krankheitsbild. Auch aus diesem Unwissen heraus erfahren Betroffene von medizinischem Fachpersonal oft Unverständnis für ihr Handeln, Ablehnung und Diskriminierung. Dies behindert einen dauerhaften Abschluss mit dem selbstverletzenden Verhalten und den Aufbau einer von Vertrauen geprägten Arzt-Patienten-Beziehung und kann zu einer erneuten Traumatisierung der Betroffenen führen. Wir möchten mit dieser Arbeit interessierte plastisch-chirurgischen Kolleg*innen anhand unseres Patient*innenkollektivs über das Krankheitsbild des NSSV informieren und damit eine Hilfestellung für den Umgang mit betroffenen Patient*innen geben.
Patienten und Methoden Von 600 Patient*innen mit Narben aus NSSV aus unserer plastisch-chirurgischen Narbenspezialsprechstunde der letzten 5 Jahren wurden die erhobenen Daten bei Erstvorstellung ausgewertet und mit der aktuellen Literatur verglichen.
Ergebnisse 95 % der Patient*innen waren weiblich, 5 % männlich. Im Mittel waren 8,4 Jahre zwischen letzter Selbstverletzung und Erstvorstellung in unserer Sprechstunde vergangen, die Patient*innen waren bei Erstvorstellung im Mittel 26 Jahre alt. Am häufigsten war durch NSSV-Narben der linke Unterarm (48 %) betroffen, gefolgt von beiden Unterarmen (40 %), dem linken Oberarm (20 %), beiden Oberarmen (15 %) und beiden Oberschenkeln (14 %). Bei 57 % der Patient*innen war dabei nur eine Körperregion betroffen. Die von NSSV-Narben insgesamt betroffene Körperoberfläche betrug im Mittel 380 cm2 mit hohen Schwankungen. Häufige Nebendiagnosen waren Schilddrüsenfehlfunktionen und Depressionen. 21 % der Patient*innen befanden sich zum Zeitpunkt der Erstvorstellung in psychiatrischer, psychologischer oder psychotherapeutischer Behandlung.
Schlussfolgerung Unsere hier gezeigten Daten geben Einblick in ein großes Kollektiv von Patient*innen mit Narben aus NSSV, die sich zur Korrektur derselben in unserer plastisch-chirurgischen Spezialsprechstunde vorstellten. Die Patient*innen waren meist weiblich, die Narben am häufigsten an den Unterarmen lokalisiert und das letzte NSSV im Mittel mehr als 8 Jahre vergangen. Unsere Daten sollen einen faktenbasierten Zugang zu einer Gruppe von Patient*innen ermöglichen, mit einem in chirurgischen Disziplinen wenig bekannten Krankheitsbild, das aufgrund seiner hohen Prävalenz und lebenslangen Folgen stärker in den Fokus gerückt werden sollte.
Endoscopic submucosal dissection for colorectal dysplasia in inflammatory bowel disease: a US multicenter study
Authors: Ngamruengphong Saowanee , Aihara Hiroyuki , Friedland Shai , Nishimura Makoto , Faleck David , Benias Petros , Yang Dennis , Draganov Peter V. , Kumta Nikhil A. , Borman Zachary A. , Dixon Rebekah E. , Marion James F. , DʼSouza Lionel S. , Tomizawa Yutaka , Jit Simran , Mohapatra Sonmoon , Charabaty Aline , Parian Alyssa , Lazarev Mark , Figueroa Esteban J. , Hanada Yuri , Wang Andrew Y. , Wong Kee Song Louis M. 
Published: April 2022

AbstractBackground and study aims In patients with inflammatory bowel disease (IBD), endoscopically visible lesions with distinct borders can be considered for endoscopic resection. The role of endoscopic submucosal dissection (ESD) for these lesions is not well defined because of a paucity of data. We aimed to evaluate the outcomes of colorectal ESD of dysplastic lesions in patients with IBD across centers in the United States.Patients and methods This was a retrospective analysis of consecutive patients with IBD who were referred for ESD of dysplastic colorectal lesions at nine centers. The primary endpoints were the rates of en bloc resection and complete (R0) resection. The secondary endpoints were the rates of adverse events and lesion recurrence.Results A total of 45 dysplastic lesions (median size 30mm, interquartile range [IQR] 23 to 42 mm) in 41 patients were included. Submucosal fibrosis was observed in 73 %. En bloc resection was achieved in 43 of 45 lesions (96 %) and R0 resection in 34 of 45 lesions (76 %). Intraprocedural perforation occurred in one patient (2.4 %) and was treated successfully with clip placement. Delayed bleeding occurred in four patients (9.8 %). No severe intraprocedural bleeding or delayed perforation occurred. During a median follow-up of 18 months (IQR 13 to 37 months), local recurrence occurred in one case (2.6 %). Metachronous lesions were identified in 11 patients (31 %).Conclusions ESD, when performed by experts, is safe and effective for large, dysplastic colorectal lesions in patients with IBD. Despite the high prevalence of submucosal fibrosis, en bloc resection was achieved in nearly all patients with IBD undergoing ESD. Careful endoscopic surveillance is necessary to monitor for local recurrence and metachronous lesions after ESD.
Predictors of adverse events and early mortality after esophageal stent placement in a low resource setting: a series of 3823 patients in Kenya
Authors: Mwachiro Michael , Parker Robert , Lando Justus , Simel Ian , Chol Nyail , Ranketi Sinkeet , Chepkwony Robert , Pyego Linus , Chepkirui Caren , Chepkemoi Winnie , Fleischer David , Dawsey Sanford , Topazian Mark , Burgert Steve , White Russell 
Published: April 2022

Abstract
Background and study aims Dysphagia from esophageal cancer may be palliated with self-expanding metallic stents (SEMS). Controversy exists about the use of dilation before SEMS deployment.
Patients and methods We performed a retrospective cohort study of patients who had SEMS placement without fluoroscopy for palliation at Tenwek Hospital in Bomet, Kenya between January 1999 and April 2019. The primary outcome was any serious adverse event (AE) (chest pain, stent migration, perforation, bleeding, or all-cause mortality) within 30 days of the procedure. Various demographic and clinical characteristics, and procedural details, were examined as risk factors. Technical success, defined as correct SEMS placement, and clinical success, defined as dysphagia score improvement without 30-day mortality, were examined.
Results A total of 3823 patients underwent SEMS placement, with 2844 (74.4 %) placed in the second decade of the study. Technical and clinical success were achieved in 97.2 % and 95.5 %, respectively, with mean dysphagia scores improving from 3.4 (SD 0.6) to 0.9 (SD 1.3) post-stent placement. AEs occurred in 169 patients (4.4 %). AEs, specifically perforations, were associated with dilation to greater than 36F in the first decade. Perforation rates decreased from the first (4.1 %) to the second decade (0.2 %). Only 30% had complete 30-day follow-up data.
Conclusions SEMS placement is a safe, effective method of palliating malignant dysphagia, with low rates of AEs and 30-day mortality and high rates of clinical and technical success. Dilation can facilitate placement of SEMS without fluoroscopy but should not be performed above 36F due to the risk of perforation.
Immune-Related Adverse Events (irAEs) in Cancer, with Inputs from a Nursing Expert: A Review
Authors: Buch Sajad Ahmad , Baba Mudasir Rashid 
Published: April 2022

AbstractImmune checkpoint inhibitors (ICPis) belong to a group of immunotherapeutic agents that act on different immune cells and tumor cells and reactivate the suppressed immune system of the host. The emergence of immunotherapy has resulted in the successful management of many malignancies. High success rates with certain advanced cancers have attributed wide importance and relevance to the use of immunotherapy. Although ICPis have gained huge popularity, their use often leads to side effects that can affect almost any system; immune-related adverse events (irAEs). These adverse events occur due to unrestrained T cell activity that unsettles the immune homeostasis of the host. Although close monitoring for toxicities controls the events on most of the occasions, the inability to diagnose them early may prove fatal on some occasions due to their subtle and nonspecific symptoms. This review summarizes in brief the usual irAEs and their management, besides a very important nursing perspective, from a nursing expert about an overall insight into the routine irAEs.
DFT-based QM/MM with particle-mesh Ewald for direct, long-range electrostatic embedding
Authors: Pederson John P. , McDaniel Jesse G. 
Published: April 2022

We present a density functional theory (DFT)-based, quantum mechanics/molecular mechanics (QM/MM) implementation with long-range electrostatic embedding achieved by direct real-space integration of the particle-mesh Ewald (PME) computed electrostatic potential. The key transformation is the interpolation of the electrostatic potential from the PME grid to the DFT quadrature grid from which integrals are easily evaluated utilizing standard DFT machinery. We provide benchmarks of the numerical accuracy with choice of grid size and real-space corrections and demonstrate that good convergence is achieved while introducing nominal computational overhead. Furthermore, the approach requires only small modification to existing software packages as is demonstrated with our implementation in the OpenMM and Psi4 software. After presenting convergence benchmarks, we evaluate the importance of long-range electrostatic embedding in three solute/solvent systems modeled with QM/MM. Water and 1-butyl-3-methylimidazolium tetrafluoroborate (BMIM/BF4) ionic liquid were considered as “simple” and “complex” solvents, respectively, with water and p-phenylenediamine (PPD) solute molecules treated at the QM level of theory. While electrostatic embedding with standard real-space truncation may introduce negligible errors for simple systems such as water solute in water solvent, errors become more significant when QM/MM is applied to complex solvents such as ionic liquids. An extreme example is the electrostatic embedding energy for oxidized PPD in BMIM/BF4 for which real-space truncation produces severe errors even at 2–3 nm cutoff distances. This latter example illustrates that utilization of QM/MM to compute redox potentials within concentrated electrolytes/ionic media requires carefully chosen long-range electrostatic embedding algorithms with our presented algorithm providing a general and robust approach.