bluuebunny/crossref_metadata_2025 huggingface dataset:
Thermodynamic evaluation of the stabilization indicators of milk quality as influenced by a complex protector
Authors: Davidenko Irina Vladimirovna , Moliboga Elena Alexandrovna , Ivanov Dmitry Mikhailovich
Published: April 2020

In the present article the authors discuss the possibility of increasing of the suitability of milk as a raw material for cheese production through preservation of native properties of milk proteins, in the first place biologically complete whey proteins as well as the weight ratio of total and ionic calcium. For thermodynamic evaluation of the biosystem we used activation energy (Ea), chemical, physical and organoleptic characteristics. As a result: a methodology has been developed for determination of foodstuffs activation energy; it was determined that with increase in the proportion of the pectin introduced the activation energy and structuredness of the biosystem also increases, when the proportion of pectin is 0.5% the activation energy is 1.788 kJ/mol, when the proportion of pectin is 3% the activation energy is 2.241 kJ/mol, which means the increase by 25%; in the studied pasteurization standard, the maximum content of calcium is observed at 85oC and is equal to 133.8 mg%., in the control sample of milk the content of calcium is 130 mg%; addition of a complex food additive as a protector makes it possible to preserve native properties of the biosystem and guarantees formation of a denser protein coagulum which allows producing high-quality fermented milk products and cheeses.
Characterization of low-resistance ohmic contacts to a two-dimensional electron gas in a GaAs/AlGaAs heterostructure
Authors: Javaid Iqbal Muhammad , Reuter Dirk , Wieck Andreas Dirk , van der Wal Caspar
Published: April 2020

The study of electron transport in low-dimensional systems is of importance, not only from a fundamental point of view, but also for future electronic and spintronic devices. In this context heterostructures containing a two-dimensional electron gas (2DEG) are a key technology. In particular GaAs/AlGaAs heterostructures, with a 2DEG at typically 100 nm below the surface, are widely studied. In order to explore electron transport in such systems, low-resistance ohmic contacts are required that connect the 2DEG to macroscopic measurement leads at the surface. Here we report on designing and measuring a dedicated device for unraveling the various resistance contributions in such contacts, which include pristine 2DEG series resistance, the 2DEG resistance under a contact, the contact resistance itself, and the influence of pressing a bonding wire onto a contact. We also report here a recipe for contacts with very low resistance values that remain below 10 Ω for annealing times between 20 and 350 s, hence providing the flexibility to use this method for materials with different 2DEG depths. The type of heating, temperature ramp rate and gas forming used for annealing is found to strongly influence the annealing process and hence the quality of the resulting contacts.
Reanimation – praktische Umsetzung von Leitlinien und Standards in der Klinik
Authors: Kersten Alexander
Published: April 2020

Out of hospital cardiac arrest (OHCA) requiring cardio-pulmonary resuscitation (CPR) remains a mojor public health concern. OHCA affects nearly 275 000 people in Europe annualy with more than 70 000 of those in Germany alone. It represents of the major causes of death in Europe.

In 40 % of patients CPR is successful and leads to a return of spontaneous circulation (ROSC). Due to the relevance of OHCA and CPR detailed guidelines with sound scientific foundation exist. However, even after successful CPR, mortality and morbidity remain high due to the severity of underlying diseases and sequelae of OHCA and CPR itself. Thus, optimization of the initial CPR treatment with reducing overall no-flow time (time from collaps with cardiac arrest to start of CPR) and optimization and streamlining of treatment algorithms and quality in hospitals receiving patients after cardiac arrest have been a strong focus to improve overall survival. Current guidelines suggest creation of Cardiac Arrest Centers as specialized hospitals who focus on high quality of post-resuscitation care with standardized processes and interdisciplinary treatment of patients after OHCA to establish fast, secure and effective treatment that is widely available in all regions.

This article will address the relevant items to be considered in daily practice of resuscitation and post-resuscitation care for cardiac arrest.
Antiarrhythmika: Welche Rolle spielen sie heute noch?
Authors: Fischer Thomas H
Published: April 2020

The use of medical antiarrhythmic therapy apart from beta-blockers has been steadily decreasing in the recent past. This can partly be attributed to technological progress that has rendered the ablation of complex cardiac arrhythmias like atrial fibrillation, focal atrial tachycardias and ventricular arrhythmias feasible and efficacious. Furthermore, an awareness regarding pro-arrhythmic and toxic side-effects of antiarrhythmic medication has evolved. Nevertheless, medical antiarrhythmic therapy still plays a fundamental role in acute therapy of arrythmias as well as certain indications for long-term therapy. This review comprehensively summarizes the current role of medical antiarrhythmic therapy in daily clinical practice focusing on mechanisms and therapies of the most common cardiac arrythmias.
Strukturierte Patientenübergabe
Authors: Rossi Rolando , Bernhard Christian , Hossfeld Björn
Published: April 2020

Gehen bei der Übergabe wesentliche Informationen verloren oder kommt es durch menschliche Faktoren, Zeitdruck und ungünstige äußere Umstände zu Missverständnissen, sind der weitere Verlauf gestört und die Sicherheit des Patienten bedroht. Strukturierte Übergabekonzepte bieten das Skelett für einen robusten und vollständigen Übergaberapport in kurzer Zeit und erhöhen die Sicherheit für den Patienten maßgeblich.
Wenn Mitarbeiter zu Botschaftern werden – Corporate-Influencer
Authors: Heeser Alexandra
Published: April 2020

Ein Blick über den Tellerrand der bisherigen, traditionellen Marketingstrategien lohnt sich auch für Therapieeinrichtungen: Mithilfe von Corporate-Influencern können sie sowohl Patienten als auch potenzielle neue Mitarbeiter ansprechen.
Akute Exazerbation einer reaktivierten chronischen Hepatitis B nach Absetzen der antiviralen Therapie mit nachfolgendem Verlust des HBsAg
Authors: Bert Florian , Rossol Siegbert
Published: April 2020

Anamnese und klinischer Befund Eine 66-jährige Patientin mit chronischer HBV-Infektion unter antiviraler Therapie stellte sich mit Ikterus und allgemeiner Schwäche 2 Wochen nach einem Infekt der oberen Atemwege vor. Die Therapie setzte die Patientin 6 Monate vor Vorstellung eigenständig ab. Die Leber war leicht vergrößert tastbar, das Abdomen sowie der weitere körperliche Untersuchungsstatus waren unauffällig.

Untersuchungen und Diagnose Das Labor zeigte deutlich erhöhte Lebertransaminasen sowie ein erhöhtes Bilirubin. Der Hepatitis-B-Infektionsstatus bestätigte das Bild des chronisch-aktiven Verlaufs (HBsAg positiv), die Virusquantifizierung ergab Werte > 21 Mio. IU/ml. Sonografisch zeigten sich keine Auffälligkeiten.

Therapie und Verlauf Die antivirale Therapie wurde wieder aufgenommen mit nachfolgender Besserung der Lebertransaminasen und Abfall der Virusmenge. Nach 22 Wochen Behandlung traten eine Serokonversion (HBsAg negativ) und Ausheilung der Hepatitis ein.

Folgerung Im Rahmen eines akuten Schubs einer chronischen Hepatitis B nach Beendigung der antiviralen Therapie ist eine Ausheilung mit Verlust des HBsAg möglich.
Comparison of computed tomography (CT), magnetic resonance imaging (MRI) and contrast-enhanced ultrasound (CEUS) in the evaluation of unclear renal lesions
Authors: Marschner Constantin Arndt , Ruebenthaler Johannes , Schwarze Vincent , Negrão de Figueiredo Giovanna , Zhang Lan , Clevert Dirk Andre
Published: April 2020

Purpose To compare the sensitivity and specificity of contrast-enhanced ultrasound (CEUS), computed tomography (CT) and magnetic resonance imaging (MRI) in the evaluation of unclear renal lesions to the histopathological outcome.

Materials and methods A total of 255 patients with a single unclear renal mass with initial imaging studies between 2005 and 2015 were included. Patient ages ranged from 18 to 86 with (mean age 62 years; SD ± 13). CEUS (255 patients), CT (88 out of 255 patients; 34.5 %) and MRI (36 out of 255 patients; 14.1 %) were used for determining malignancy or benignancy and initial findings were correlated with the histopathological outcome.

Results CEUS showed a sensitivity of 99.1 % (95 % confidence interval (CI): 96.7 %, 99.9 %), a specificity of 80.5 % (95 % CI: 65.1 %, 91.2 %), a positive predictive value (PPV) of 96.4 % (95 % CI: 93.0 %, 98.4 %) and a negative predictive value (NPV) of 94.3 % (95 % CI: 80.8 %, 99.3 %). CT showed a sensitivity of 97.1 % (95 % CI: 89.9 %, 99.6 %), a specificity of 47.4 % (95 % CI: 24.4 %, 71.1 %), a PPV of 87.0 % (95 % CI: 77.4 %, 93.6 %) and a NPV of 81.8 % (95 % CI: 48.2 %, 97.7 %). MRI showed a sensitivity of 96.4 % (95 % CI: 81.7 %, 99.9 %), a specificity of 75.0 % (95 % CI: 34.9 %, 96.8 %), a PPV of 93.1 % (95 % CI: 77.2 %, 99.2 %) and a NPV of 85.7 % (95 % CI: 42.1 %, 99.6 %). Out of the 212 malignant lesions a total of 130 clear cell renal carcinomas, 59 papillary renal cell carcinomas, 7 chromophobe renal cell carcinomas, 4 combined clear cell and papillary renal cell carcinomas and 12 other malignant lesions, e. g. metastases, were diagnosed. Out of the 43 benign lesions a total 10 angiomyolipomas, 3 oncocytomas, 8 benign renal cysts and 22 other benign lesions, e. g. renal adenomas were diagnosed. Using CEUS, 10 lesions were falsely identified as malignant or benign, whereas 8 lesions were false positive and 2 lesions false negative.

Conclusion CEUS is an useful method which can be additionally used to clinically differentiate between malignant and benign renal lesions. CEUS shows a comparable sensitivity, specificity, PPV and NPV to CT and MRI. In daily clinical routine, patients with contraindications for other imaging modalities can particularly benefit using this method.

Key Points: 

Citation Format
Auswirkung von Hubschraubertransporten auf die Hämolyserate von Erythrozytenkonzentraten bei deren Einsatz in der Luftrettung
Authors: Brade Marko , Dahmen Janosch , Zeiger Sascha , Ohmann Tobias , Finger Christiane , Unnerstall Brigitte , Zeiler Thomas , Suck Garnet
Published: April 2020

Im Rahmen der präklinischen Versorgung von schwer verletzten Patienten wird der Nutzen einer Transfusion von Erythrozytenkonzentraten (EK) schon am Unfallort diskutiert. Hierbei kommt der Luftrettung hinsichtlich Vorhaltung und Transport eine erhebliche Bedeutung zu. Unklar ist, ob die Vibrationen im Hubschrauber eine Hämolyse induzieren und so eine richtlinienkonforme und damit sichere Anwendung verhindern könnten. Ziel dieser Untersuchung ist es, die Hämolyseraten von standardmäßig gelagerten mit denen in einem Hubschrauber transportierten EK zu vergleichen. Es erfolgte die Herstellung von identischen Paaren von EK. Während die EK der Kontrollgruppe richtlinienkonform gelagert wurden, erfolgte für die EK der Interventionsgruppe die Mitnahme im Hubschrauber während Realeinsätzen. Danach erfolgte die Bestimmung der Hämolyserate zu 3 verschiedenen Zeitpunkten. In beiden Gruppen ließ sich ein Anstieg der Hämolyserate über die Zeit nachweisen, was dem üblichen Alterungsprozess der Erythrozytenkonzentrate entspricht. Alle Werte blieben deutlich unter der von der Richtlinie geforderten maximalen Hämolyserate. Ein relevanter Unterschied zwischen beiden Gruppen ließ sich zu keinem Zeitpunkt zeigen. Ein sicherer Transport von EK im Rettungshubschrauber hinsichtlich der Qualität im Sinne einer im Rahmen liegenden Hämolyserate und damit die Voraussetzung zu deren sicherer Anwendung im präklinischen Setting ist daher problemlos möglich.
Targeted Treatments for Inherited Neuromuscular Diseases of Childhood
Authors: Fay Alex J. , Knox Renatta , Neil Erin E. , Strober Jonathan
Published: April 2020

In the past decade, the number of genes linked to neuromuscular diseases of childhood has expanded dramatically, and this genetic information is forming the basis for gene-specific and even mutation-specific therapies. At the forefront of these advances are the two recently approved treatments for spinal muscular atrophy: one, an antisense oligonucleotide that modifies splicing of the SMN2 gene, and, the other, a gene therapy vector that delivers the SMN1 gene to motor neurons, both of which are allowing patients to acquire developmental milestones previously unseen in this fatal disease. This review highlights these advances and emerging targeted therapies for Duchenne muscular dystrophy and centronuclear myopathy, while also covering enzyme replacement therapy and small molecule-based targeted therapies for conditions such as Pompe's disease and congenital myasthenic syndromes. With these and other newer techniques for targeted correction of genetic defects, such as CRISPR/Cas9, there is now hope that treatments for many more genetic diseases of the nervous system will follow in the near future.
Factors Affecting Patients' Acceptance of and Satisfaction with Cloud-Based Telehealth for Chronic Disease Management: A Case Study in the Workplace
Authors: Su Yung-Yu , Huang Su-Tsai , Wu Ying-Hsun , Chen Chun-Min
Published: April 2020

Objective Understanding patients' acceptance of and satisfaction with telehealth use is important for workplace health promotion. In this study, we used a questionnaire to measure patients' usage behavior and satisfaction with cloud-based telehealth services in the workplace. We empirically investigated the factors that influence patients' usage and satisfaction based on data collected from 101 participants.

Methods As its main research framework, this study utilized a revised version of the technology acceptance model 2 that was based on the telehealth services provided for chronic disease management. Through integrating a cross-sectional research design with an author-developed structured questionnaire that was assessed using reliability and validity tests, an anonymous survey was conducted on selected participants. The proposed research model and hypotheses were validated through path analysis using SPSS.

Results We found that users believe telehealth services can promote their workplace health management; that job relevance, result demonstrability, and perceived ease of use (PEOU) positively affect the perceived usefulness (PU), which implies that cognitive instrumental processes have the most significant impact on the PU of cloud-based telehealth; and that both PEOU and PU positively affect the intention to use (IU), but PU has a bigger influence than PEOU on users' intentions to continue using telehealth. In particular, the IU and actual usage behavior were critical to the patients' satisfaction with telehealth services.

Conclusion This research contributes to the rapid developing field of technology acceptance research by examining workplace telemedicine engagement. Our results will provide researchers with useful advice and a user-centered strategy for promoting workplace health management, which benefits both health care providers and corporate managers.
Peritoneovaginal Fistula and Appendicitis-Related Pelvic Abscess in Pregnancy
Authors: Saleh Mona , Kim Antonia Francis , Gardner Andrew , Sun Katherine , Brubaker Sara
Published: April 2020

Appendicitis in pregnancy is the most common nonobstetric surgical emergency. Pregnancy causes changes in anatomy, which could lead to uncertainty regarding the diagnosis of appendicitis. This case report describes a case of appendicitis presenting with peritoneovaginal fistula in a pregnant woman in the second trimester, with interesting finding of isolated appendiceal endometriosis on pathology. The importance of complete physical examination, including speculum examination, is emphasized in the pregnant patient presenting with acute-onset abdominal pain. Imaging criteria for diagnosis of appendicitis should be adjusted to account for the gravid uterus, which may cause appendiceal abscess to appear in a variety of locations, such as posterior to the cervix, as in this case.
Perinatal Hypophosphatasia in a Premature Infant
Authors: Sankaran Deepika , Chandrasekharan Praveen K. , Rawat Munmun
Published: April 2020

A premature male infant was delivered at 32 weeks' gestation due to category-2 fetal tracing after preterm labor. The physical exam showed shortened and bowed long bones, with calvarium felt in small area of the head. Serum alkaline phosphatase was very low on admission. Extensive metaphyseal abnormalities, bowing of long bones, and poor ossification of all bones were noted on skeletal survey (radiography). Based on ultrasound evidence of “bowing” and long bone fractures at 26 weeks, amniocentesis was performed that later diagnosed hypophosphatasia by genetic testing while ruling out osteogenesis imperfecta. Although ventilated initially, the infant gradually improved with enzyme replacement therapy (ERT) and was extubated to noninvasive ventilation for 6 weeks. Following clinical deterioration with hypoxic respiratory failure secondary to sepsis at 4 months of age, he succumbed to severe pulmonary hypertension, likely secondary to chronic lung disease and prolonged ventilation. Early diagnosis allowed timely initiation of appropriate therapy. Radiological improvement with the therapy showed promising results in this rare disease. Despite specific novel therapy being available, variability in presentation dictates prognosis in this previously universally fatal condition. The potential unknown effects of ERT on pulmonary vascular remodeling need further investigation.
Prolonged Febrile Myoclonus in an Infant
Authors: Shishido Ayumi , Yamaguchi Hiroshi , Ishida Yusuke , Ohashi Tamaki
Published: April 2020

Febrile myoclonus is considered a benign symptom of myoclonic jerks associated with fever. Although cases have been sporadically reported, it is a poorly characterized phenomenon. In this study, we reported the case of a previously healthy 20-month-old boy who developed atypically prolonged myoclonic jerks, appearing more than 100 times over a period of 3 days. Blood cultures were negative, and his electroencephalogram was normal. The patient was discharged with a diagnosis of febrile myoclonus and was followed up for several months. His brain magnetic resonance imaging and brain development were also normal. Physicians must understand the benign clinical course of febrile myoclonus in order to avoid unnecessary procedures such as lumbar puncture.
KOMMENTAR: Unsägliches Geschacher
Authors: Doelfs Guntram
Published: April 2020

Spahns finanzieller „Rettungschirm“ für die Kliniken greift viel zu kurz und dürfte ein kurzes Verfallsdatum haben.
kma ENTSCHEIDER BLOG: Fehlende Kultur führt zu fehlenden Erlösen
Authors: Heiß Tanja
Published: April 2020

Viele Organisationen sagen über sich „unsere Mitarbeiter sind unser Kapital“. Aber an den „weichen“ Faktoren, die einen direkten Einfluss auf die Wirtschaftlichkeit des Unternehmens besitzen, wird kaum gearbeitet. Welche Rolle die Begriffe Präsentismus und Absentismus in diesem Zusammenhang für eine Rolle spielen und wieviel Geld Krankenhäuser dadurch jährlich verlieren, erfahren Sie hier
DEUTSCHLAND IM AUSNAHMEZUSTAND: Veranstaltungen in Zeiten von Corona
Authors: Kucera Martin
Published: April 2020

Angesichts der Pandemie muss die Messebranche weltweit umdisponieren. In Deutschland sind alle Veranstaltungen bis auf Weiteres abgesagt, dass gilt auch für die Gesundheitswirtschaft. Die Prognosen von Professor Dr. Christian Drosten, Deutschlands gefragtestem Virologen und Direktor des Instituts für Virologie der Charité Berlin, fallen für die nahe Zukunft eher düster aus. Dennoch scheinen die meisten Veranstalter von Messen, Tagungen und Kongressen derzeit darauf zu bauen, dass sich die Lage zumindest ab Mai wieder ändern könnte. Bleibt zu hoffen, dass sie Recht behalten.
ELEKTRONISCHE PATIENTENAKTE: Konnektoren gut – alles gut
Authors: Rößing Sabine
Published: April 2020

Der Referentenentwurf zum Personendatenschutzgesetz (PDSG) steckt den datenrechtlichen Rahmen für die Einführung der elektronischen Patientenakte (ePA) ab. Endlich. Dennoch bleibe der Entwurf in entscheidenden Punkten unklar, monieren Kritiker. Auch bei der technischen Umsetzung lauern Probleme.
TECHNOLOGIEPARTNERSCHAFT: Paracelsus-Kliniken rüsten auf
Authors: Ehrhardt-Joswig Jana
Published: April 2020

Die Paracelsus-Kliniken haben mit Philips eine strategische Partnerschaft von acht Jahren vereinbart. Ziel ist, die bildgebende Medizintechnik zu modernisieren und einen bedarfsgerechten Gerätepark zu entwickeln. Das Gesamtvolumen der Vereinbarung beläuft sich auf 24 Millionen Euro.
Capturing Value amidst Constant Global Restructuring? Information-Technology-Enabled Services in India, the Philippines and Kenya
Authors: Kleibert Jana M. , Mann Laura
Published: April 2020

Information-technology-enabled services (ITES) has become a sector of promise for many low- and middle-income economies seeking to leapfrog industrialization and build knowledge-intensive economies. Yet as a sector defined by accelerating processes of commodification and skill elimination, its long-term developmental promise must be carefully scrutinised. Analysing the development of the sector in India, the Philippines and Kenya the paper reveals both the contextual nature of past successful ITES policies and their developmental vulnerabilities. Drawing on literature on industrial policies and global value chains and production networks, the paper critiques the existing policy approaches by arguing that they are largely focussed on enabling value and employment creation and that they pay insufficient attention to questions of value capture and long-term socio-economic transformation.
Curie-temperature dependence of microwave heating behavior of NixZn(1−x)Fe2O4 powders
Authors: Kashimura K. , Namioka T. , Miyata T. , Fujii T. , Itoh H. , Fukushima H.
Published: April 2020

Recently, the microwave well absorber goes noticed as a heating aid to establish a microwave chemical plant. We determine the mechanism of the rapid and selective heating of magnetic conductive particles by electric and magnetic microwave fields. Furthermore, we investigate the dependencies of the Curie temperature of NixZn(1−x)Fe2O4 powders on their heating behaviors by employing a conventional microwave oven. In these experiments, the maximum microwave heating temperature increases with the Curie temperature of ferrites. To investigate the dependence of the microwave magnetic field strength on the heating behavior, we focus a pure magnetic field separated from 2.45 GHz microwaves onto these ferrites, and the magnetic field enhanced by a single-mode cavity is used to heat the ferrites at higher Curie temperatures. Our results indicate that there are two types of energy interactions between the ferrites and the microwave magnetic field with two different mechanisms: magnetic loss and eddy current heating. Furthermore, the heating performance of the ferrites as microwave absorbers is evaluated in comparison with SiC, which is a typical microwave absorber used in microwave processing. We believe that our findings can contribute to further advancements in microwave chemistry and related fields.
Intercalation induced ferromagnetism in group-V transition metal dichalcogenide bilayer
Authors: Ahamd H. M. R. , Zhou Jian
Published: April 2020

Two-dimensional (2D) ferromagnetic materials are receiving great attention in recent years. However, owing to strong direct magnetic coupling between different layers, they usually prefer antiferromagnetic coupling between different layers once stacked together. It would be of great interest if one can tune such antiferromagnetism to ferromagnetism, which is preferable for further magnetic information storage, and large magnetic moments can be achieved (proportional to thin-film thickness). In the current work, we theoretically and computationally suggest an effective method to tune the interlayer magnetic coupling between two magnetic materials (VX2, X = S, and Se). We show that intercalating a layer of alkali metals could enhance indirect magnetic exchange, and ferromagnetic interlayer coupling between different VX2 layers can be achieved. Our work provides a new and effective route to control and modulate the magnetic exchange between 2D magnetic materials.
Interplay between C-doping, threading dislocations, breakdown, and leakage in GaN on Si HEMT structures
Authors: Besendörfer S. , Meissner E. , Zweipfennig T. , Yacoub H. , Fahle D. , Behmenburg H. , Kalisch H. , Vescan A. , Friedrich J. , Erlbacher T.
Published: April 2020

This work describes electrical characteristics and the correlation to material properties of high electron mobility transistor structures with a C-doped GaN current blocking layer, grown either by an extrinsic or auto-doping process with different doping levels. Increasing degradation of crystalline quality in terms of threading dislocation density for increasing C-doping levels was observed for all samples. Different growth conditions used for the auto-doped samples played no role for overall degradation, but a higher fraction of threading screw dislocations was observed. Independent of the doping process, 90% of all TSDs were noted to act as strong leakage current paths through the AlGaN barrier. This was found statistically and was directly verified by conductive atomic force microscopy in direct correlation with defect selective etching. Vertical breakdown was observed to increase with increasing C-concentration and saturated for C-concentrations above around 1019 cm−3. This was attributed to an increasing compensation of free charge carriers until self-compensation takes place. A progressive influence of TDs for high C-concentrations might also play a role but could not be explicitly revealed for our material.
Dynamics and glass transition temperature of polystyrene films supported on hydroxyl terminated substrates
Authors: Zhang Bingjie , Yan Ran , Zhao Nanrong
Published: April 2020

All atom molecular simulations are employed to systematically study the properties of polystyrene (PS) films supported on hydroxyl (–OH) terminated Si substrates. We modulate the –OH grafting density ϕG to probe its effect on polymer diffusion, local segmental relaxation, and glass transition temperature Tg. First, our results indicate a monotonic facilitation of polymer dynamics with increasing ϕG. The underlying mechanism is investigated in terms of energy and PS free volume change in detail, and a consistent scenario is obtained. The facilitated diffusion dynamics can be attributed to the –OH induced reduction of interaction energy between PS and the substrate. In addition, –OH grafting leads to the augment of the polymer free volume, which is responsible for the faster local segmental relaxation process. Second, we uncover a very intriguing increase–decrease non-monotonic tendency of glass transition temperature with increasing grafting density, where the maximum Tg occurs in a moderate grafting case. A wetting-friction transition is proposed to rationalize such an unusual behavior. As ϕG increases from a native case to a half grafting situation, polymer films undergo a sharply enhanced interpenetration (or wetting) into the substrate, resulting in the pronounced increment of Tg. As ϕG further increases, the polymer–substrate interaction energy experiences a heavy drop, which implies a greatly reduced friction effect, leading to the decreasing trend of Tg as observed in the range from half grafting to full grafting.
Exhaustive and informatics-aided search for fast Li-ion conductor with NASICON-type structure using material simulation and Bayesian optimization
Authors: Nakano Koki , Noda Yusuke , Tanibata Naoto , Takeda Hayami , Nakayama Masanobu , Kobayashi Ryo , Takeuchi Ichiro
Published: April 2020

Currently, NASICON-type LiZr2(PO4)3 (LZP)-related materials are attracting attention as solid electrolytes. There are experimental reports that Li-ion conductivity can be improved by doping a small amount of Ca or Y into stoichiometric LZP. In previous studies, doping with only one element having a narrow search space has been attempted, and thus, further improvement of the Li-ion conductivity is conceivable by using multi-element doping. When multi-element doping is attempted, because the search space becomes enormous, it is necessary to evaluate the Li-ion conductivity using a low-cost method. Here, force-field molecular dynamics using a bond valence force field (BVFF) approach was performed to evaluate the Li-ion conductivity. We confirmed that the Li-ion conductivity of stoichiometric LZP derived from BVFF (6.2 × 10−6 S/cm) has good agreement with the first principle calculation result (5.0 × 10−6 S/cm). Our results suggest that the Li-ion conductivity can be further improved by simultaneously doping LZP with Ca and Y [6.1 × 10−5 S/cm, Li35/32Ca1/32Y1/32Zr31/16(PO4)3]. In addition, Bayesian optimization, which is an informatics approach, was performed using exhaustively computed conduction property datasets in order to validate efficient materials search. The averages for Bayesian optimization over 1000 trials show that the optimal composition can be found about seven times faster than by random search.
'I had to tell my GP I had lung cancer': patient perspectives of hospital- and community-based lung cancer care
Authors: Nababan Tara , Hoskins Anke , Watters Emily , Leong Jeanie , Saunders Christobel , Slavova-Azmanova Neli
Published: April 2020

Lung cancer care spans both hospital- and community-based healthcare settings, and suboptimal communication between healthcare providers impacts on continuity and quality of care. Patients’ experiences regarding: (1) communication between healthcare providers; and (2) the role of their GP during cancer treatment was explored in interviews with 47 Western Australian lung cancer patients. Thematic analysis using a phenomenological approach was undertaken to derive key themes regarding participant experiences. Poor communication between hospital cancer specialists (HCSs) influenced participants’ treatment choices and perceptions of the quality of their care. Information provided by HCSs to GPs was often delayed or incomplete, and many participants perceived themselves as a messenger between healthcare settings. Participants’ opinions about the GP role during cancer treatment ranged from ‘no role’ to an ‘active member of the treating team’. A new model of cancer care is needed where the GP is considered part of the treating team. Early involvement of GPs and two-way communication between hospital and primary care during the disease continuum is required for this to occur.
Does study language (Dutch versus English) influence study success of Dutch and German students in the
Netherlands?
Authors: de Vos Johanna F. , Schriefers Herbert , Lemhöfer Kristin
Published: April 2020

We investigated whether the language of instruction (Dutch or English) influenced the study success of 614 Dutch and
German first-year psychology students in the Netherlands. The Dutch students who were instructed in Dutch studied in their native language
(L1), the other students in a second language (L2). In addition, only the Dutch students studied in their home country. Both these variables
could potentially influence study success, operationalised as the number of European Credits (ECs) the students obtained, their grades, and
drop-out rates. The L1 group outperformed the three L2 groups with respect to grades, but there were no significant differences in ECs and
drop-out rates (although descriptively, the L1 group still performed best). In conclusion, this study shows an advantage of studying in the
L1 when it comes to grades, and thereby contributes to the current debate in the Dutch media regarding the desirability of offering degrees
taught in English.
Applying Computational Thinking in Unsera Students used Online Calculus Training
Authors: Safaah Eva , Karyaningsih Dentik
Published: April 2020

The effectiveness and efficiency of the Computational Thinking mindset is very useful to improve the level of education and mindset of the Indonesian people so that they can compete at the international level. Every student must have the ability to computational thinking, namely Decomposition, Pattern Recognition, Abstraction, and Algorithm Design. The application that is used to train computational thinking is given the name “GANCANG” practical. This learning activity is carried out by utilizing the Google Forms application for Calculus course exercises at the Faculty of Information Technology at Serang Raya University. After implementing this exercise, the confidence of each student will increase. This confidence is needed to overcome problems, strong communication skills, to facilitate collaboration and presentations, and general curiosity in all disciplines that makes them ask and answer correctly so that they can help students achieve the learning goals that have been identified.
Designing Android-Based Augmented Reality Application on Three Dimension Space Geometry
Authors: Astriawati Ningrum , Wibowo Waris , Widyanto Handoyo
Published: April 2020

Augmented reality (AR) technology is a visual technology that combines virtual world objects into real world views in real time. By utilizing augmented reality technology on an android smartphone, a geometry object of space can be visualized concretely through three-dimension virtual modeling that is similar to the original object. This research incorporates AR technology into 3dimension space geometry objects and then it is implemented in three dimension objects lectures for cadets of Ship Machinary Study Program. The purpose of this research is to find out: how the cadets response in using the AR application. This application is an application that runs on the android mobile platform, where the AR application requires video streaming taken from a smartphone camera as an input source, then this application will detect markers using a tracking system, after the markers have been detected, the object model in the geometry of the space will appear above the marker as if the object model is real. The methods or stages in designing this application use the Prototype Model, whereas the implementation of the application uses a one-group pretest-posttest design pattern. The results showed that the use of the AR application on the Android platform was able to get a positive response from cadets in lecturing the Concept of Geometry Course, especially three-dimension objects.
Design and Implementation of Multi Knowledge Base Expert System Using the SQL Inference Mechanism for Herbal Medicine
Authors: Melina  , Putra Eddie Krishna , Witanti Wina , Sukrido  , Kusumaningtyas Valentina Adimurti
Published: April 2020

The expert system is part of artificial intelligence with basic knowledge which is built to transfer its ability into computer system. In this study, the expert system is a combination of two technologies namely health technology as a basic of knowledge and information technology as interface of patient with health expert. The knowledge of health expert about diseases and herbal medicine is implemented in artificial intelligence to support in making a decision. This multi knowledge expert system is using the SQL Inference mechanism. The multi knowledge concept is made with database design, so that the expert system in this study is able to diagnosis many diseases and has more solutions in health problems. This study is using herbal medicine in order to prevent its users from poisoning and allergic of synthetic medicines.
Analyze the Relationship of Brand Image and Advertisement towards Decision to Become a Customer on Bank BNI Batam Branch
Authors: Guci Dede Ansyari , Ghazali Puspa Liza , Nst Amrin Mulia , Fajrillah  , Abas Sayid , Fadhli Muhammad
Published: April 2020

The aim of this research is to explore the relationship of brand image and advertisement towards decision to become a customer on Bank BNI Batam Branch. A hundred respondents of people who have become a customer on Bank BNI Batam Branch have been chosen in the field of research in Batam, Indonesia. The methode instrument was using questionnaires and made up of five variables. The questionnaires distributed were made up of three variables, where two were independent variables and one was dependent variable. By using multiple regression analysis, it is found that each independent variable has strong correlation with the single variable. it can be concluded that the brand image and advertisement have a positive relationship.
Computer Modelling of a New Simple Chaotic Generator
Authors: Rusyn V , Sadli M. , Mamat M. , Mujiarto  , Mada Sanjaya W. S.
Published: April 2020

In this paper, a new circuit of a generator that realizes chaotic behavior is presented. This oscillator-circuit contains four resistors, two capacitors, one inductor, one diode, one operational amplifier and one voltage source. The proposed circuit was modeled by utilizing NI’s MultiSim software environment. The system’s behavior was investigated through numerical simulations, by using well-known tools of nonlinear theory, such as phase portrait, chaotic attractor and time distributions of two chaotic system-variables. This proposed circuit of chaotic generator can be used as a main part of modern systems transmitting and receiving information for masking and decryption of an information carrier.
The Use of Computational Mathematics Teaching Materials aided Mathematica Software in Vector Algebra Course
Authors: Baist Abdul , Amarullah Ahmad , Safitri Prahesti Tirta , Enawar
Published: April 2020

This study aims to get a picture of the effect of the use of computational mathematics teaching materials aided Mathematica software on student learning outcomes. The problem commonly faced by students in vector algebra courses is the understanding of concepts in the lecture material so that it impacts on the low student learning outcomes. The method used in this study is a quasi-experimental with pretest-posttest non-equivalent control group design. The results obtained in this study are the differences in learning outcomes between groups of students who use these teaching materials and those who do not. A significant increase in student learning outcomes by an average of 5% was found after the use of computational mathematics teaching materials aided Mathematica software in the Vector Algebra course. Therefore, it can be concluded that the use of teaching materials influences student learning outcomes.
Sentiment Analysis for Decision Support Systems of Employee
Authors: Bahri Saeful , Adiwisastra Miftah Farid , Alawiyah Tuti , Purnia Dini Silvi , Simpony Bambang Kelana
Published: April 2020

This paper presents sentiment analysis that will be used as Decision Support in employee recruitment. Sentiment analysis used Term Frekuensi.Index Document Frekuensi (TF.IDF) weight calculations. Weighting results were classified using the Support Vector Machine (SVM) method into several categories, namely negative sentiment, positive sentiment and neutral. the results of this study showed an accuracy value of 0.65 which was the best accuracy for text classification.
A New 4-D Hyperchaotic Two-Wing System with a Unique Saddle-Point Equilibrium at the Origin, its Bifurcation Analysis and Circuit Simulation
Authors: Vaidyanathan S. , Moroz I. M. , Sambas A. , Mujiarto  , Sanjaya W. S. M.
Published: April 2020

A new 4-D hyperchaotic two-wing system with three quadratic nonlinearities is proposed in this paper. The dynamical properties of the new hyperchaotic system are described in terms of phase portraits, Lyapunov exponents, Kaplan-Yorke dimension, symmetry, dissipativity, etc. Also, a detailed dynamical bifurcation analysis of the hyperchaotic system has been studied using bifurcation diagrams. As an engineering application, an electronic circuit realization of the new hyperchaotic two-wing system is developed in MultiSIM, which confirms the feasibility of the theoretical hyperchaotic two-wing system.
Reducing defects in Mile line Of Rolling Plate Departement Using Six Sigma Method
Authors: Krisnaningsih Erni , Tri Panudju Andreas , Pratama Ikhwanul
Published: April 2020

PT. Krakatau Posco is steel company that produces steel and distributes its products both for national and international market. PT. Krakatau Posco produces slabs and plates steel. In meeting the requirements of the markets, the high-quality products are a necessary, thus the company should improve their product quality by reducing defects. The purpose of this study is to identify product defects and to determine the factors that cause during the production process, to propose corrective actions to reduce the number of defects. This research was conducted at Mill Line on Plate Rolling Department PT. Krakatau Posco. The research uses the Six Sigma method. Following the Six Sigma method, the result of DPMO is 568 with δ value is 4.87 which is still under the world target which is 6δ (3.4 DPMO). Proposals steps for improving the quality of plate products are doing routine maintenance and repairing of the machine, checking engine calibration conditions, improving the quality of slab material, heating slab time > 180 minutes, setting parameters (thickness, width, and length) as specified, and checking the straightness of the product plate during the rolling process (camber correction).

A post-publication change was made to this article on 20 Apr 2020 as an incorrect version was published.
Decision Support System for Ranking of Students in Learning Management System (LMS) Activities using Analytical Hierarchy Process (AHP) Method
Authors: Sudaryono  , Rahardja Untung , Masaeni
Published: April 2020

Learning Management System (LMS) is part of E-Learning which is used as a means of online learning. However, the use of LMS is not in accordance with Minister of Education and Culture Regulation (PERMENDIKBUD) No 23 of 2016 which contains education assessment standards. This is because the LMS only focuses on the content that is used as a medium for student learning without any assessment or ranking given by the teacher. The purpose of this study is to provide an evaluation of the student learning process in the form of ranking students’ activities in LMS using the AHP (Analitycal Hierarchy Process) method so that student learning media is in accordance with PERMENDIKBUD No. 23 of 2016. The AHP method was chosen to assist teachers in ranking students so that it is not subjective. The method used can help teachers to determine student ranking from student activities that are ranked criteria in LMS. From the ranking criteria that are processed using the AHP method, the results obtained in the form of a ranking obtained by each student.
Web Security and Vulnerability: A Literature Review
Authors: Yulianton H , Warnars H L H S , Soewito B , Gaol F L , Abdurachman E
Published: April 2020

The web continues to grow and attacks against the web continue to increase. This paper focuses on the literature review on scanning web vulnerabilities and solutions to mitigate web attacks. Vulnerability scanning methods will be reviewed as well as frameworks for improving web security. This research is the basis for future work that will end with the elaboration of web scanning and security with the aim of proposing better innovations.
Smartphone Application for Badminton sports community
Authors: Anwar Nizirwan , HendroAsali Eric , Heryanto  , Budiyanto Teddy , Hendyan Willy , Warnars Harco Leslie Hendric Spits
Published: April 2020

Nowadays, there are so many people in Indonesia particularly young people who are interested in playing badminton, but at the end of the day, this game will make boring for young people particularly with the booming of the smartphone game. Literally, it will make the young generation too lazy for outing activity or doing sports and busy with their digital technology, particularly their smartphone. Obviously, we are interested in using the mobile application which can be used to bridge the boring of doing sports mainly badminton sport, wherewith this mobile application is not just only for field badminton or coach booking, but can extend their friendship and community in positive ways. Hopefully, with this mobile application not just only booking for Badminton fields, but beyond that, there will be a mobile application that supports the fans of the badminton sports community when can know each other from different places and make friendship and competition among the members. At the end of the day, we hope this mobile application will support young people to stay away from trouble and drug and to have a positive life with the sport, particularly badminton sport as Indonesian’s favorite sport.
Iris segmentation using Hough Transform method and Fuzzy C-Means method
Authors: Hapsari R K , Utoyo M I , Rulaningtyas R , Suprajitno H
Published: April 2020

Complementary and Alternative Medicine (CAM) therapy is quite popular for chronic diseases such as diabetes, arthritis, and others. CAM has become very popular in the last period. One area of CAM is iridology, which is an alternative diagnosis that links iris patterns, color, tissue weakness, damage and other characteristics, which can obtain evidence about the patient’s systemic health. In identification based on the eye image, it requires an iris separation process. This separation process in image processing is done by segmentation. So that segmentation plays an important role in the identification of diseases based on images. In this research segmentation is done by combining the Hough Transform method and the clustering-based segmentation method, the Fuzzy C-Means method. The segmentation is done on the iris object which is sourced from UBIRIS V2 database. System evaluation is done by measuring accuracy, sensitivity, specificity and execution time. Test results on the tested iris image indicate the proposed method is able to segment the iris image properly.
Framework Design of Information Retrieval System for Official Letter Using Extraction of Geometry Feature Method
Authors: Fabrianto L , Hendra  , Surohman  , Sfenrianto  , Faizah NM
Published: April 2020

In a government institution many official letters are made daily, the letters have an official format in the Tanggal, No. Surat, Lampiran dan Hal. area, with an OCR (Optical Character Recognition) scanner an official letter can be digitized and processed to obtain characters that will be used as searches, but in fact in certain desired parts there are often handwriting, a method of pattern recognition is needed to recognize the handwriting. The process in this study including of normalization, segmentation and pattern recognition from labels in the Tanggal, No. Surat, Lampiran dan Hal. area,this system will generate output in text form, the output text is result that will use as a term in the process of the Information Retrieval System, so the search for an official letter will be easy to do. This study is only makes the framework design for the next research authors will explain the detail of process and results obtained.
A Comparison Between Triple Exponential Smoothing And Monte Carlo Methods In The Prediction Of Chicken Business Profit at Poultry Farm Livestock Of Jatipuro District
Authors: Sudirman Yoga Distra , Rifai Mochamad Farid , Kusuma Dine Tiara , Purwanto Yudhy Setyo , Fitriani Yessy
Published: April 2020

With a prediction of profits, farmers can anticipate if the next harvest has experienced a slight profit or failed to harvest and so that farmers still have business capital and they do not experience a stable cage (bankrupt). This research objective is comparing two kind prediction method. Methods to be compared are Triple Exponential Smoothing and Monte Carlo methods. To find out the value of the compatibility of the two methods used MAPE (Mean Absolute Percentage Error) which can find out the percentage of the error value. This method are used for farmers financial management in predict their profit. To implement both methods, past data are used, namely the previous harvest profit data. Result of this study, by using Triple Exponential Smoothing method produces a MAPE value of 12.10% with a value of α = 0.3 and the Monte Carlo method produces a MAPE value of 40.58%.