bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Relationship Between Problem-Solving Skills and Planning Ability by Using Tower of London Test
Authors: Elbistan Birgul Damla Baber , Stubbe Tobias C. 
Published: February 2022

Abstract
Mathematical problem-solving skills depend on many variables and cognitive skills are one of the most important of them. The purpose of this study is to determine the routine and non-routine problem-solving skills in terms of cognitive aspects. This aims to reveal the relationship between the planning ability and mathematical problem-solving skills of secondary school children, ages 10 to 13. An empirical quantitative research was done for this purpose. For the measurement of problem-solving skills, a curriculum-based mathematics achievement test was used and for assessing the planning ability, a computerized version of the Tower of London test was used. It was applied to a total of 416 students from the fifth, sixth, and seventh grade. As a result of the statistical analysis, a positive significant relationship was found between planning ability and problem-solving skills but there were not any significant differences in terms of gender.
Characterization of the fcc/bcc orientation relationship by EBSD using pole figures and
variants
Authors: Nolze Gert 
Published: February 2022

Abstract
The orientation relationship (OR) between fcc and bcc lattices are described by crystallographic fundamentals using the example of Kurdjumov–Sachs (K–S) and Nishiyama–Wassermann (N–W). Complete pole figures containing all variants will be used to distinguish even between slightly different ORs. EBSD on iron meteorites and duplex steel has been used to analyse a large number of crystal orientations with regard to a high statistical significance and a high probability to capture all variants in a single measurement. It is shown that the use of fixed OR models like K–S, N–W, Bain, Pitsch, or Greninger–Troiano does not satisfacturally reflect the observed experimental pole distributions. It is not convenient to use high-indexed lattice planes and directions to describe the small deviations from the given models. The Euler subspace representation offers a readily comprehensible tool to get an idea about the characteristic of the experimentally detected OR.
The mechanism of columnar-to-equiaxed transition during electromagnetic centrifugal solidification
Authors: Guo Minghu , Yang Yuanshen , Hua Fuan , Hu Zhuangqi 
Published: February 2022

Abstract
A series of Hastelloy C tubes were solidified under a centrifugal field with various conditions of bulk liquid flow obtained with a controllable electromagnetic field. Their macrostructures show that the columnar-to-equiaxed transition was promoted both by increasing electromagnetic stirring and by increasing the superheat, and the application of electromagnetic stirring at different times can also influence the percentage of the total area occupied by the equiaxed region. Mechanical damage of dendrites is the most probable mechanism for the promotion of the columnar-to-equiaxed transition with high velocity flows. The detachment of the nuclei originated in the chill zone can also promote the columnar-to-equiaxed transition.
Variational Approach to Fluid-Structure Interaction via GENERIC
Authors: Peschka Dirk , Zafferi Andrea , Heltai Luca , Thomas Marita 
Published: February 2022

Abstract
We present a framework to systematically derive variational formulations for fluid-structure interaction problems based on thermodynamical driving functionals and geometric structures in different coordinate systems by suitable transformations within this formulation. Our approach provides a promising basis to construct structure-preserving discretization strategies.
Effect of geometry error on the non-Newtonian flow in the ceramic microchannel molded by SLA
Authors: Zhang Jie , Gu Hai , Sun Jianhua , Li Bin , Jiang Jie , Wu Weiwei 
Published: February 2022

Abstract
The ceramic microchannel manufactured by stereolithography (SLA) can be used in many engineering cases. SLA is an accurate 3D printing technology, while the small geometry error is inevitable. The involved flow is always non-Newtonian fluids. Therefore, it is necessary to analyze Bingham fluids flow in the ceramic microchannel with geometry errors. To conduct the numerical simulations, a modified lattice Boltzmann (LB) model is presented. Then, the good consistency between the theoretical and numerical solutions demonstrates the effectiveness of the improved method. The required cases are analyzed by using the proposed method. Both the streamlines and outlet velocity distribution show that the geometry error increases the outlet velocity. The Bingham parameters are important factors in the flow of the microchannel.
Z-Production – Ein revolutionäres Produktionsparadigma
Authors: Schneider Markus 
Published: February 2022

Abstract
Z-Production stellt ein neu gedachtes, interdisziplinäres Produktionsparadigma dar. Die nicht-wertschöpfenden Prozesse sollen komplett automatisiert und in „Layer“ oberhalb und unterhalb der Wertschöpfungsebene, also in der Z-Achse, verschoben werden. Ziel ist die Steigerung der Nachhaltigkeit unserer Produktionsstätten durch eine Reduzierung des Flächenverbrauchs um 50 Prozent bei gleichzeitiger Steigerung der Produktivität.
Wie die Gleichstromfabrik real wird
Authors: Kuhlmann Timm , Schaab Darian Andreas , Sauer Alexander 
Published: February 2022

Abstract
Auf dem Weg zu einer CO2-neutralen Produktion kommt der Energieeffizienzsteigerung eine besondere Bedeutung zu. Dafür müssen auch Technologien, die bereits seit mehr als 100 Jahren eingeführt und bewährt sind, in Frage gestellt werden. Der Einsatz eines Gleichstromnetzes (DC) und damit die Abkehr vom Wechselstrom (AC) in der Fabrik ist ein Umbruch, der Energieeffizienzsteigerung und eine einfache Optimierung der Energienutzung ermöglicht. Das hier vorgestellte Vorgehensmodell beginnt bei der Analyse und Bewertung der DC-Technologie im Kontext des individuellen Anwendungsfalls und endet mit der Realisierung eines DC-Netzes in der Produktion.
Agiles Prozessmanagement mittels Ambidextrie
Authors: Scholz Julia-Anne , Lange Annika , Knothe Thomas , Busse Dirk 
Published: February 2022

Abstract
Aufgrund der vielfältigen und überlappenden Einflüsse aus dem Unternehmensumfeld (z. B. Pandemie, Chip-Krise, Naturkatastrophen) müssen Entscheidungen sowohl auf Basis von unternehmensinternen Daten (z. B. Liquidität) als auch Umfeldinformationen (z. B. Technologie-trends) getroffen werden. Anschließend sind Maßnahmen abzuleiten und – neben den regulären Unternehmensprozessen – umzusetzen. In diesem Beitrag wird ein Ansatz für die Informationsvernetzung und -bereitstellung für agiles Prozessmanagement vorgestellt.
Überwindung struktureller Unsicherheit mit der Simulation Digitaler Zwillinge
Authors: Morvan Michel 
Published: February 2022

Abstract
Die Ungewissheit in der heutigen Fertigungsindustrie ist strukturell bedingt. Je größer die Ungewissheit ist, desto wahrscheinlicher ist es, dass die Entscheidungsträger den Überblick und das Verständnis für die Auswirkungen von Störungen und Entscheidungen auf ihr Unternehmen verlieren. Ganzheitliche digitale Simulationszwillinge können Herstellern dabei helfen, sich abzeichnende Verhaltensweisen zu erkennen, alternative Strategien zu testen, Ergebnisse auch unter Bedingungen vorherzusagen, die noch nie aufgetreten sind, und die Planungsresilienz zu optimieren.
Development and Evaluation of Preconditioning Protocols for Sand Specimens in Constant-Volume Cyclic Direct Simple Shear Tests
Authors: Humire Francisco , Lee Minyong , Ziotopoulou Katerina , Gomez Michael G. , DeJong Jason T. 
Published: February 2022

Abstract
Textured platens are often used to improve the transfer of shear stresses from the platens to the soil specimen during direct simple shear (DSS) tests. However, constant-volume DSS tests when textured platens are used can be affected by inadequate engagement of the soil at the platen-soil interface, leading to large reductions in the vertical stress at the start of shearing. The application of a preconditioning sequence involving small-strain drained cycles prior to constant-volume shearing can improve engagement at the platen-soil interface, but when excessively implemented, it can also have adverse effects on the measured soil behavior (e.g., strength, stiffness). A series of constant-volume cyclic DSS tests preceded by different preconditioning sequences was performed to evaluate the effect of preconditioning on the engagement of sand specimens at the platen-soil interface and the stress-strain response of these specimens. Results showed that textured platens that are properly engaged with sand specimens can reduce slippage at the platen-soil interface. This engagement can be achieved by applying a limited number of small-strain drained cycles at a low vertical stress while still obtaining representative soil behavior during the subsequent equivalent undrained constant-volume cyclic loading. Although the preconditioning protocol presented herein is specific to the testing equipment and materials considered, similar procedures may be adopted to develop preconditioning protocols for other soils, platens, and testing devices.
New onset autoimmune diabetes mellitus and hypothyroidism secondary to pembrolizumab in a patient with metastatic lung cancer
Authors: Cunha Clara , Silva Eugénia , Vieira Ana Cláudia , Saraiva Catarina , Duarte Sequeira 
Published: February 2022

Summary
Immunotherapy has become an important pillar for the management of advanced cancer. Immune-related adverse events including endocrinopathies have been well described with programmed cell death 1 inhibitors such as pembrolizumab. While thyroid dysfunction is the most common endocrinopathy associated with pembrolizumab, new-onset autoimmune diabetes mellitus (DM) is extremely rare. The authors report a case of pembrolizumab-induced primary hypothyroidism and type 1 diabetes mellitus presenting with diabetic ketoacidosis (DKA). A 59-year-old female patient was treated with pembrolizumab for a stage 4 lung adenocarcinoma. She presented to the emergency department with hyperglycaemia-related signs and symptoms, such as polyuria, polydipsia, weight loss, vomiting, asthenia and dehydration, 3 weeks after her first dose of pembrolizumab. Laboratory evaluation revealed hyperglycaemia, hyperketonaemia and high anion gap metabolic acidaemia consistent with DKA. After prompt and adequate treatment of DKA, she transitioned to s.c. basal-bolus insulin. The diagnose of autoimmune DM was established based on the undetectable C-peptide levels and seropositivity for antiglutamic acid decarboxylase antibodies. Additional hormonal parameters revealed overt hypothyroidism and levothyroxine therapy was initiated. This case highlights the importance of blood glucose and thyroid function monitoring as an integral part of cancer treatment protocols for pembrolizumab and other immune checkpoint inhibitors.

Learning points

Programmed cell death 1 (PD1) inhibitors such as pembrolizumab can cause endocrine immune-related adverse events (irAE), including thyroid dysfunction and type 1 diabetes mellitus (T1DM).

Thyroid dysfunction is the most frequent endocrine irAE secondary to PD1 inhibitors.

Autoimmune diabetes and possible resultant diabetic ketoacidosis are rare, but life-threatening adverse events associated with pembrolizumab.

Pembrolizumab-induced T1DM often present with relatively low HbAlc levels, reflecting the fulminant onset of β-cell destruction.

Patients treated with pembrolizumab and other immune checkpoints inhibitors should be monitored regularly for hyperglycaemia and thyroid dysfunction.
Thyrotoxic periodic paralysis associated with Graves’ disease: a case series
Authors: Ludgate S , Lin M , Mayadunne M , Steen J , Ho K W 
Published: February 2022

Summary
Thyrotoxic periodic paralysis (TPP) is a rare condition characterised by acute onset hypokalaemia and paralysis which most commonly affects men of Asian descent between the ages of 20 and 40 years (1, 2). It has been reported in approximately 2% of patients with thyrotoxicosis in China and Japan (1, 2, 3). Hypokalaemia in TPP results from a massive intracellular shift of potassium induced by the thyroid hormone sensitisation of Na+/K+-ATPase (4). Treatment of TPP includes prevention of this shift by using beta-blockade, rapid potassium replacement and treatment of the underlying hyperthyroidism. We present two cases of TPP with differing outcomes. In the first case, a 33-year-old Filipino gentleman presented to our emergency department (ED) with a 3-month history of recurrent proximal lower limb weakness. Serum potassium was 2.2 mmol/L (3.3–5.1) and he was given i.v. potassium replacement. Thyroid function tests (TFTs) and thyroid antibodies were consistent with Graves thyrotoxicosis. He was discharged home on carbimazole and remains well controlled on long-term medical therapy. In the second case, a 22-year-old Malaysian gentleman presented to our ED with new-onset bilateral lower limb painless paralysis. Serum potassium was 1.9 mmol/L with TFTs demonstrating Graves thyrotoxicosis. He was treated with i.v. potassium replacement and discharged home on carbimazole and propranolol. He represented to the hospital on two further occasions with TPP and was advised to consider total thyroidectomy given his refractory Graves’ disease. These cases highlight the importance of prompt recognition of this rare life-threatening complication of Graves’ disease, especially in patients of Asian descent.

Learning points

Thyrotoxic periodic paralysis is a rare condition characterised by hypokalaemia and acute painless muscle weakness in the presence of thyrotoxicosis.

The signs and symptoms of thyrotoxicosis can be subtle in these patients.

It is most commonly seen in Asian males between the ages of 20 and 40 and is most frequently caused by Graves’ disease.

Prompt recognition is essential as it is a life-threatening condition.

Urgent i.v. potassium replacement and beta-blockade with a non-selective beta-blocker are the mainstays of treatment.

i.v. potassium replacement should not be given in dextrose as this can potentiate hypokalaemia.
Forming Clinician-Parent Therapeutic Alliance for Children With Severe Neurologic Impairment
Authors: Bogetz Jori F. , Trowbridge Amy , Lewis Hannah , Jonas Danielle , Hauer Julie , Rosenberg Abby R. 
Published: February 2022

OBJECTIVES
Care for children with severe neurologic impairment (SNI) often involves complex medical decision-making where therapeutic alliance between clinicians and families is essential. Yet, existing data suggest that communication and alliance are often lacking. This study aimed to examine aspects important to developing therapeutic alliance between clinicians and parents of children with SNI.

METHODS
A purposive sample of expert clinicians and parents of children with SNI completed brief demographic surveys and 1:1 semistructured interviews between July 2019 and August 2020 at a single tertiary pediatric academic center. Interviews focused on the inpatient experience and transcriptions underwent thematic analysis by a study team of qualitative researchers with expertise in palliative care and communication science.

RESULTS
Twenty-five parents and 25 clinicians participated (total n = 50). Many parents were mothers (n = 17, 68%) of school-aged children with congenital/chromosomal conditions (n = 15, 65%). Clinicians represented 8 professions and 15 specialties. Responses from participants suggested 3 major themes that build and sustain therapeutic alliance including: (1) foundational factors that must exist to establish rapport; (2) structural factors that provide awareness of the parent/child experience; and (3) weathering factors that comprise the protection, security, and additional support during hard or uncertain times. Participants also shared concrete actions that promote these factors in clinical practice.

CONCLUSION
Therapeutic alliance between clinicians and parents of children with SNI consists of at least 3 factors that support communication and medical decision-making. These factors are facilitated by concrete actions and practices, which enhance communication about the care for children with SNI.
Persepsi Mahasiswa Jurnalistik pada Keterampilan Komunikasi Lisan Presenter Najwa Shihab
Authors: Maesyaroh Imas , Wibawa Darajat , Dulwahab Encep 
Published: February 2022

Penelitian ini bertujuan untuk mengetahui persepsi atau pandangan mahasiswa Jurnalistik UIN Bandung pada keterampilan komunikasi lisan presenter Najwa Shihab. Penelitian ini menggunakan pendekatan kualitatif, metode penelitian pada penelitian ini adalah metode deskriptif yang memaparkan suatu situasi atau peristiwa berdasarkan data dari hasil wawancara. Metode ini digunakan agar mengetahui persepsi atau pandangan mahasiswa pada keterampilan komunikasi lisan presenter Najwa Shihab. Hasil penelitian menunjukkan bahwa pandangan mahasiswa terhadap keterampilan komunikasi Najwa Shihab menimbulkan persepsi yang positif. Keterampilan komunikasi Najwa Shihab saat membawakan sebuah acara dan menyampaikan informasi mampu membentuk pemahaman mahasiswa akan isi pesan yang disampaikan. Keterampilan komunikasi yang dimiliki Najwa Shihab sesuai dengan konsep dari Asrori yang meliputi keterampilan dalam menggunakan kata-kata/bahasa/gaya bahasa yang menarik dan sopan, dan mampu menjadi pendengar yang baik bagi narasumber maupun audiens dalam sebuah acara talkshow.
Kata Kunci ; Persepsi; Keterampilan Komunikasi;
This research aims to find out the perceptions of views of UIN Bandung Journalistic students on the presenter’s oral communication skills, Najwa Shihab. This study uses a qualitative approach, the research method of this study is a descriptive method that describes a situation or event based on data from interviews. This method is used to determine the perceptions or views of students on the presenter's oral communication skills, Najwa Shihab. The results of the study show that students' views on the presenter's communication skills Najwa Shihab rise up the positive perceptions. Najwa Shihab's communication skills when delivering an event and delivering information were able to create students' understanding of the contents of the message delivered. The communication skills possessed by Najwa Shihab are in accordance with the concepts of Asrori which include skills in using interesting and polite words, languages and language styles, as well as are able to become good listeners for the speakers and audiences in a talkshow.
Keywords ; Perception; Communication Skills;
Assessment of visceral adipose tissue in patients with coronary artery disease using bioelectrical impedance analysis
Authors: Miklishanskaya S. V. , Orlovsky A. A. , Chigineva V. V. , Karlova N. A. , Muksinova M. D. , Mazur N. A. 
Published: February 2022

Aim. To study visceral adipose tissue (VAT) content in patients with coronary artery disease (CAD) using the bioimpedance analysis, to identify metabolic disorders associated with visceral obesity, and to determine the role of individual risk factors in the formation of coronary artery lesions using modern statistical methods.Material and methods. A total of 152 patients were examined (women, 66; men, 86). The median age of patients was 63 [55;69] years. This observational study assessed anthropometric parameters, such as height, weight, body mass index, waist circumference, whole-body fat percentage, and specifically VAT mass, as well as the relationship of these parameters with blood levels of triglycerides, high-density lipoprotein cholesterol (HDL-C) and glucose. Height was measured using a metal height meter RM-1 “Diakoms”. Weight, body mass index, wholebody fat percentage, and VAT mass were measured using the Omron BF-508 body composition monitor (Omron, Japan). Epicardial adipose tissue (EAT) thickness was assessed using two-dimensional echocardiography on a Philips Sonos 5500 ultrasound system (Germany).Results. Bioimpedance analysis revealed a higher VAT content in patients with CAD compared with those without CAD (14 [11;18]% vs 13 [10;14,5]%, respectively (p=0,025)). During the ROC analysis, cut-off values for VAT ≥15% and EAT ≥7,5 mm were identified, associated with a higher risk of CAD. In multivariate analysis, only HDL-C levels were significantly associated with CAD, while at the same time, univariate analysis demonstrated the significance of VAT and EAT in predicting CAD.Conclusion. The results showed that an increased VAT content and low HDL-C level is associated with the presence of CAD.
Anthropometric indices and their relationship with poor prognosis in patients with coronary artery disease and obesity
Authors: Svarovskaya A. V. , Trubacheva O. A. , Pereverzev S. V. , Garganeeva A. A. 
Published: February 2022

Aim. To assess the association of anthropometric indices in patients with coronary artery disease (CAD) and obesity and to study their predictive value in the development of adverse cardiovascular events.Material and methods. The study included 229 patients with CAD (median age, 55±7,56 years). Depending on the presence of obesity according to the World Health Organization criteria (1999), patients were divided into 2 groups. The 1st group included 107 obese patients, while the 2nd group — those without obesity (n=122). The groups were comparable in age. We measured waist (WC) and hip circumference (HC), followed by waist-to-hip ratio and body mass index calculation. The lipid profile parameters were determined by the enzymatic colorimetric method. During the study, the following indices were calculated: body mass index, visceral adiposity index, insulin resistance index, body shape index (BSI), fasting triglyceride (TG)/plasma glucose index, waist-to-height ratio, lipid accumulation product, TG-to-high density lipoprotein cholesterol ratio.Results. During the follow-up period, adverse cardiovascular events in the 1st group of patients were found in 37 (34,5%) patients, while in the 2nd group, the composite endpoint was revealed in 12,3% of patients. In order to develop a model for predicting the risk of an unfavorable CAD course in obese patients, we performed a logistic regression analysis, which showed that the following were the most significant predictors of unfavorable cardiovascular outcomes: TG/glucose index and BSI.Conclusion. Thus, of all the considered anthropometric indices, only two were associated with unfavorable CAD course — TG/glucose index and BSI. The data obtained indicate the validity of the search for novel useful obesity indicators with a good predictive value.
Qualitative Assessment of Access to Perinatal Mental Health Care: A Social-Ecological Framework of Barriers
Authors: Tyokighir Deborah , Hervey Ashley , Schunn Christy , Clifford Daniel , Ahlers-Schmidt Caroyln 
Published: February 2022

Introduction. Psychological distress affects up to 25% of pregnant women and contributes to poor birth outcomes. This project aimed to triangulate themes from interviews with low-income pregnant or postpartum women, primary care providers and mental health providers regarding knowledge of and barriers to mental health services in the perinatal period.
Methods. Study personnel conducted interviews in Sedgwick County, Kansas until saturation of themes within each group. Thirty-three interviews were transcribed, independently reviewed using grounded theory and themes were stratified using the social-ecological model framework.
Results. Individual level themes including cost/lack of insurance and transportation were consistent across groups, however women only identified barriers at this level. Consistent themes across provider groups included lack of support at the interpersonal level; poor communication between providers at the organizational level; and Medicaid limitations at the public policy level.
Conclusions. Multi-level interventions are needed to improve access to mental health care for low-income women in the perinatal period.