Miracle-dz/UniFAR-FTUs huggingface dataset:
Kontinuierliche Spektralanalyse zur Erfassung apnoebezogener Blutdruckschwankungen

EINLEITUNG Schlafbezogene Atmungsstörungen, wie die obstruktive Schlafapnoe, gehen mit einem ausgeprägten kardiovasculären Risiko einher. Charakteristisch sind apnoebezogene Schwankungen des arteriellen Blutdrucks. Während der auf die Apnoe folgenden Hyperventilation wird periodisch ein transienter Anstieg des Blutdrucks gefunden, der systolisch mehr als 50 mmHg betragen kann. Die zyklische Variation des Blutdrucks kann ebenso wie die Herzfrequenz in ihrer zeitlichen Abfolge mit Hilfe der Spektralanalyse quantitativ erfaßt werden [1,2]. Schlafbezogene Atmungsstörungen können erfolgreich mit nasaler CPAP (continuous positive airway pressure) Beatmung therapiert werden. Unter dem Effekt einer pneumatischen Schienung der oberen Atemwege werden obstruktive Apnoen und Hypoventilation beseitigt. Der Folgeeffekt, nämlich die Normalisierung nächtlicher Blutdruckschwankungen wird mit Hilfe der Spektralanalyse quantitativ erfaßt.
Adoption of a quality assurance scheme and its effect on firm performance: A study of Greek firms implementing ISO 9000

An analysis of 143 firms in the Greek manufacturing and service sectors reveals that adopters of ISO 9000 quality assurance schemes are larger companies producing intermediate goods, but less profitable and with higher leverage than their non-adopter counterparts. The effects of adopting an ISO 9000 scheme on firm performance and especially on certain dimensions of profitability are not significant in a period of 5-6 years after adoption. Evidence suggests that the adoption of an ISO 9000 quality assurance scheme, being a continuous process of improvement, is beneficial in the long term and does not necessarily improve financial ratios in the short term. Active support policies for the promotion and dissemination of quality standards in the manufacturing and service sectors of Greece can be reconsidered and a more targeted policy should be implemented. Future research may be designed and implemented so that long-term and strategic effects of the adoption of the new ISO 9000:2000 standards are revealed.
Novel Flexible Pivot with Large Angular Range and Small Center Shift to be Integrated into a Bio-Inspired Robotic Hand

This article presents a novel flexible pivot with large angular range and small center shift. It is conceived to provide the interphalangeal rotational degrees of freedom of the fingers of a new bio-inspired robotic hand, simultaneously removing friction and backlash from the mechanism. The specifically developed mathematical model shows that the proposed solution meets all design requirements. Preliminary tests carried out on a prototype show an accurate matching between the model and the real behavior. The advantages offered by the new flexible pivot can be extended to any robotic application where frictionless, zero-backlash, compact, and easy-to-manufacture pivots are required for pure rotation over long angular strokes.
Design of IMC filter for PID control strategy of open-loop unstable processes with time delay

A modified internal model control (IMC) filter has been proposed for the open-loop unstable process with time delay and a further IMC–proportional-integral-derivative (PID) tuning rule is derived on the basis of the proposed IMC filter. Investigation of the IMC filter structure clearly demonstrates that a critically damped filter does not always provide satisfactory response and that this is probably due to lack of sufficient integral action. The conventional, critically damped filter is therefore replaced with a more general, second-order IMC filter for improved integral action. The present investigation shows that for the most unstable processes, the underdamped IMC filter provides the desired integral action and improves the closed-loop performance of the system except for the unstable processes with a strong lead term. An exhaustive simulation studies has been performed to show the advantage of the proposed method in both nominal and robust cases. By incorporating Kharitonov's theorem, closed-loop time constant (λ) guidelines have been provided for the first-order delayed unstable process (FODUP). Copyright © 2010 Curtin University of Technology and John Wiley & Sons, Ltd.
MODELLBASIERTE ANALYSE DER THERAPEUTISCHEN WIRKUNGSMECHANISMEN VON UNTERSCHWELLIGER MYOKARDSTIMULATION

Neben der konventionellen Schrittmacherund Defibrillator-Therapie stellt die unterschwellige Stimulation des Herzens einen weiteren bedeutenden Ansatz dar, der sich neuer Therapiemechanismen bedient. Klinischexperimentelle Studien haben bereits Anwendungsmöglichkeiten aufgezeigt, die von der Verlängerung der Refraktärzeit oder Erhöhung der Kontraktionskraft bis bin zur Behandlung erworbener Kardiomyopathien und zur Unterstützung des Heilprozesses von geschädigtem Herzmuskel reichen [2]. Ziel der Untersuchung ist es, ein physikalisch fundiertes Modellverständnis der zugrunde liegenden Funktionsmechanismen zu erarbeiten, um daraus Strategien für den effizienten Einsatz und zur Optimierung dieser Therapieform ableiten zu können.
Impactos da seleção migratória sobre os diferenciais de rendimentos do trabalho no Ceará

A migração do capital humano e seu processo de alocação no mercado de trabalho nas sociedades capitalistas tem relevante destaque nas discussões teóricas da economia. Nesse sentido, este artigo tem como objetivo verificar se o capital humano migrante intermunicipal no Ceará compõe um grupo positivamente selecionado da população utilizando as informações socioeconômicas e demográficas dos Censos Demográficos 2000 e 2010. A princípio, recorre-se à revisão da literatura; e, em seguida, ao modelo de Heckman (1979) em dois estágios, com correção de viés de seleção amostral. Os resultados mostram que, no primeiro estágio, a probabilidade de residir em um município do Ceará e ser migrante é maior para homens, brancos, com melhores níveis de escolaridades. Ademais, pela significância estatística da razão inversa de Mills, rejeita-se a hipótese nula de que os migrantes não compõem um grupo positivamente selecionado nos municípios cearenses e possuem características não observáveis que os tornam mais produtivos que os nativos no mercado de trabalho, em consequência, são mais bem remunerados. Finalmente, a decomposição mostra que, com exceção das características observáveis, os atributos produtivos não observáveis e o efeito seletividade são favoráveis aos maiores retornos salariais aos migrantes.
The Game of Curiosity: Using Videogames to Cultivate Future Scientists

According to a report from the National Research Council (NRC, 2011), children have an innate curiosity about the natural world, yet many students loose interest in science after elementary school. A national survey of middle‐ and high‐school students reports that only 20% of the students surveyed expressed an interest in science as a career (Project Tomorrow, and PASCO Scientific, 2008). Mayo (2009) suggests one way to increase the number of students interested in science is through videogames. Her initial work indicates learning through videogames can yield a 7%–40% positive learning increase over standard learning through lectures. A key component inherently built into videogames is trying something, failing, and then unabashedly trying again. This “we will all fail” concept is counter to the “everyone is a winner” perception that is proliferating in our culture, where sporting events issue medals and trophies to anyone who participates, the suburbs are littered with “My child is an honor student” bumper stickers, and high‐schools have not one but multiple valedictorians (Best, 2011). Most videogames, to the contrary, are considered boring if everyone wins all the time. Similarly, scientists rarely excel if they do not experience failure to some degree. A recent article by Gerber (2012) posits that to prepare our future scientists, we need to teach them how to experience failure, over and over again, and to teach them how to learn from their failure. Gerber claims today’s science educators are doing the opposite, conveying that failing at science, even a little, is unacceptable. Although conclusive evidence is not yet in place, research suggests that using gaming to present scientific concepts can engage our younger generation of science learners and get them interested in learning (Wang and Hannafin, 2005; Federation of American Scientists [FAS], 2006; Kirriemuir and MacFarlane, 2006; Kiili and Lainema, …
Wind-Electric Pump System Design

The aim of this study is to analyse the operation of a wind-electric pumping system (WEPS) as an alternative to conventional mechanical wind pumps for application in stand-alone water-pumping schemes. The steady-state as well as the dynamic operation of such a system is analysed. Through these analyses, practical guidelines are given in the design and sizing of the different system components to ensure efficient and reliable operation. Theoretical analyses are supported by measured results conducted on a small scale wind-electric pump system. The limitations involved in the design and implementation of a large scale wind-electric pump system are presented through a case study. It is firstly concluded that small-scale windelectric pump systems have the potential of offering superior performance and flexibility to conventional mechanical wind pumps. It is secondly concluded that large-scale wind-electric pump systems are best suited, in terms of economic and practical feasibility, to pumping applications with low pressures and medium to high wind regimes at the turbine installation site.
Verbund von Beton und Bewehrungsstahl bei hoch‐dynamischer Belastung

Vor dem Hintergrund zunehmender terroristischer Bedrohung für Bauwerke in besonderen Gefährdungslagen ist es erforderlich, die Bauteilreaktion bei der Bemessung auch für die hohen Verzerrungsraten, wie sie bei Explosionen und Impakt auftreten, zu berücksichtigen. Voraussetzung hierfür ist eine wirklichkeitsnahe Beschreibung des Materialverhaltens. Dabei wird auf der Mesoebene das Zusammenwirken von Beton und Betonstahl durch die Verbundwirkung beschrieben. Um das Verhalten von Bauteilen, die Einwirkungen mit hohen Belastungsgeschwindigkeiten ausgesetzt sind, richtig beurteilen zu können, ist daher auch die Kenntnis des verzerrungsratenabhängigen Verbundverhaltens erforderlich. Im Rahmen des zur Zeit an der Universität der Bundeswehr München (UniBwM) laufenden Forschungsprojekts RS1510 werden Verbundversuche am Split‐Hopkinson‐Bar (SHB) in Zusammenarbeit mit dem Fraunhofer Institut für Kurzzeitdynamik Ernst‐Mach‐Institut (EMI) durchgeführt. Die Ergebnisse dienen als Basis für die Entwicklung numerischer Modelle für die Abbildung des Verbunds von Stahl und Beton bei dynamischer Belastung. Nach einem kurzen Überblick zum Verbundverhalten werden die Grundlagen der Versuchstechnik dargestellt und die Besonderheiten bei den Push‐in‐Versuchen erläutert. Die Ergebnisse der durchgeführten Versuche zeigen eine deutliche Tendenz in Richtung von der Verzerrungsrate im Beton abhängigen Anstieg der Verbundfestigkeit.
Gradual Reduction of PV Generator Yield due to Pollution

Since spring 1994 the PV-laboratory of HTA Burgdorf has operated a new test center for PV-systems with a solar generator of 60 kWp on top of the new building of the department of electrical engineering. In course of time, a development of a permanent pollution strip was observed which caused a gradual reduction of energy yield of up to 10% until the end of 1997. The most important external source of unusual pollution at this location is a main railway line (Berne-Zurich) at a distance of only about 50m. Pollution by iron dust from railway lines seems to favor development of permanent pollution strips at the edges of framed modules. As soon as pioneer plants begin to grow, this effect is enhanced, as they retain all kinds of dust arriving on the modules. Under such conditions a periodical cleaning of a PV generator seems to be necessary. To cure this problem, artifical cleaning in June 1998 became necessary. Measurements of IV-curves before and after cleaning have proved that most of the power loss is reversible.
What Controls the Presence and Characteristics of Aftershocks in Rock Fracture in the Lab?

Aftershock cascades are a characteristic feature of natural seismicity, but underlying mechanisms remain debated. Here, we experimentally explore the presence or absence of aftershocks during failure of intact rock and slip on newly created laboratory faults. We show that the overall activity increase and spatial localization of acoustic emission (AE) events during fracture nucleation occurs without temporal (Omori‐type) correlations. Our analysis shows that this absence of aftershock sequences occurs even beyond peak stress and also when a macroscopic fracture has formed post peak‐stress and propagates. Instead, aftershock triggering does occur during post‐fracture stress relaxation along the newly created lab‐fault and in the presence of large‐scale stress heterogeneities, for example, imposed by a saw‐cut notch. The detected aftershocks in these cases can be described by standard seismological relationships such as a modified Omori‐Utsu relation and its associated inter‐event time distribution and productivity relation. Moreover, AE within all experiments follow the Gutenberg‐Richter relation, with smaller b ‐values for triggered events compared to non‐triggered events. Performing full‐moment tensor inversions, we find that seismic events with significant isotropic, compaction components play an important role for aftershock triggering. The resulting triggered events tend to have focal mechanisms similar to their trigger. Seismic events with predominant tensile components, on the other hand, show little evidence for aftershock triggering. This opens up a new perspective on aftershocks, going beyond not only the rate‐and‐state paradigm limited to purely frictional sliding or shear events but also the mainshock attribute paradigm where mainshock attributes control aftershock patterns.
The Potential of Augmented Reality for Vocational High School Learning Amid Covid-19 Spread

Due to Covid-19 spread, the learning system in Indonesia changes from classroom learning to distance learning which has impact on practical learning. Practical training in vocational high school is primary important to prepare students in industrial environment. A technology is needed to combine reality and virtual into 3-dimensional form and projected in real time as known as augmented reality. Augmented reality can extend the integration of digital learning and real world. The purpose of this research to determine the possible augmented reality for vocational high school learning amid pandemic. This research used a systematic literature consisting of planning, selection, extraction and execution. This research used related previous research through the potential of augmented reality in the learning process sourced from article conference and journal since 2013-2020. The result shows that augmented reality is used as an alternative media in education learning process at all level. Augmented reality has various potentials issues used as an interactive media to manipulate the practical learning object, increase motivation, increase learning outcomes and reduce cost for long term.
Green Chemistry for Sustainable Development

Green chemistry represents the pillars that hold up our sustainable future. It is imperative to teach the value of green chemistry to tomorrow's chemists. It is clear that many industries and research of many academics recognize the significance of green chemistry. In the practice of green chemistry a set of principles that reduces or eliminates the use of hazardous substance in the design, manufacture and applications of chemical products are utilized. Chemistry is really very helpful to us as its applications are used worldwide for several purposes. We cannot really imagine a world without chemistry and its applications such as medicines. However, we should now concentrate on green chemistry, or sustainable chemistry, which refers to reducing or stopping the damage done to the environment around us. Hence, green chemistry could include anything from reducing waste to even disposing of waste in the correct manner. Another way to save the environment through sustainable chemistry is to make use of renewable food stocks. Yet another good move is to make use of catalysts in experiments rather than using stoichiometric reagents. Chemical derivatives must be avoided as far as possible in any type of application as they often prove to be harmful. All chemical wastes should be disposed off in the best possible manner without causing any damage to the environment and living beings. We have to develop materials that will aid in the infusion of green chemistry into the curriculam such as green chemistry laboratory experiments and short courses on green chemistry. This article presents a brief description on green chemistry principles and its developments.
Hawkeye technology using tennis match

In recent years, tennis has been widely spread and development of electronic information technology and popularization application in tennis. Hawkeye technology is through the trajectories of the high-speed cameras to capture the tennis, and through the digital imaging displays it on the electronic screen, thus provides the more impartial decision basis for the game. In view of this, this article through to the present situation and the application of hawkeye technology architecture, influence value are detailed analysis, trying to provide effective feasible Suggestions for it.
Flexible Seal Strip Design for Advanced Labyrinth Seals in Turbines

The paper discusses the potential benefit of flexible seal strips in labyrinth seals for turbines. By reducing the radial stiffness compared to a standard straight and stiff knife, seal clearance could be reduced without significantly reducing the seal durability and long-term performance. As contact between the seal strips and the rotor can occur especially during transient operating phases, a more flexible design of the seal strips can prevent damage and wear, keeping the discharge rates constantly low. However, the pressure difference across the fin will cause a deflection of the seal strip due to the increased flexibility and thus creating an additional possible risk for an unwanted contact. Pressure balanced designs and supports on the low pressure side are used on the investigated seal designs to eliminate that risk.To give evidence of possible performance gain a standard labyrinth seal configuration is compared to two configurations with segmented and curved seal strips. In a first step, the discharge coefficient and the leakage rates for the nominal seal design are calculated using two-dimensional CFD. In order to investigate the impact of a worn seal tip on the leakage flow, the geometry change due to a rubbing event is simulated with FEA tools. Therefore, a specific high-speed wear model is implemented and calibrated by experimental data, enabling the correct cooling effects and plastic deformation. The discharge coefficient and the leakage mass flow rates of the worn geometry are then again modeled with CFD for the various seal configurations and compared to the unworn state.The study shows that a wise combination of the advantages of flexible curved seal strips can be used to reduce the leakage rates significantly, improving the life time of seal elements at the same time.Copyright © 2013 by ASME
Validation of the adaptive reuse potential (ARP) model using iconCUR

Purpose – This paper aims to focus on the adaptive reuse of existing buildings that have become obsolete, an important strategy for sustainable development and a pertinent response to excessive resource usage resulting from typical destruction and redevelopment.Design/methodology/approach – This paper looks at the validity of earlier work to model adaptive reuse potential (ARP) using a new multiple criteria decision analysis tool called iconCUR. Based on a review of 12 case studies, the paper determines the extent of agreement between ARP and iconCUR evaluations that both claim to be useful in making decisions about reuse.Findings – The results show a high correlation between these approaches, whether based on raw scores or on relative ranking, and match expert opinion concerning appropriate actions. This work represents the culmination of a three‐year study into the strategic assessment of building adaptive reuse opportunities.Originality/value – The paper provides confidence in the modelling of future i.
An Artificial Intelligence‐Based Motion Trajectory Prediction of Fibrous Matters

Understanding and predicting the motion behavior of fibrous matters is critical for studying the structure, performance, function, and assembly behavior of fibrous matters. However, due to the limitation of characterization technology on a space−time scale, the existing technologies cannot provide real‐time in situ tracking of entire dynamic processes of fibrous matters. To address this shortcoming, an artificial intelligence‐based codebase, named the artificial intelligence‐based fiber motion tracking (AI‐FMT), is proposed for analyzing, studying, and predicting motion behaviors of fibrous matters. The proposed AI‐FMT can automatically extract morphology information of fibrous matters from a large number of pictures or video streams, which serve as an input for machine learning to predict the motion pattern of fibrous matters. Using a finite‐element concept in understanding the point−coordinate relationship, the AI‐FMT greatly simplifies the architecture of the neural network during motion prediction. For the case of 928 trainable parameters, an average accuracy of 97.8% is achieved in predicting variations in morphological parameters, such as mean square radius of gyration, end‐to‐end distance, and curvature in the movement process of animal hair. The presented results can help to understand the structure, assembly, performance, and function of fibrous matters.
Potentials of Student Entrepreneurship to Encourage the Growth of Entrepreneur Culture in New Normals in FIS UNNES Students

Universitas Negeri Semarang (UNNES) is located in Gunungpati District, Semarang City which is morphologically rural. Rural characteristics can be seen from the dominance of land cover which is still in the form of green open land. Land built with high density is only found in areas directly adjacent to the campus. Most people make a living in the agricultural sector. However, the presence of the UNNES campus has also helped bring the entry of information technology, in the form of internet networks. UNNES campus especially in the Faculty of Social Sciences (FIS) which has developed rapidly. Students start entrepreneurship by utilizing existing technology so it is very interesting to explore the extent of literacy and the potential of entrepreneurship and student start-up. The method used inthis research is variabel mesurements by scoring the data obtained. Data collection techniques using on line interviews with the google form instrument and interviews through the Whatsapp group. The results show that more than 62% of FIS students have understood the general term entrepreneurship in entrepreneurship literacy, some are not familiar with the business mindset and business start-up terms in entrepreneurship literacy. Also, the entrepreneurship potential of FIS students at Semarang State University has a business and is categorized in the type of marketing there are two types, namely offline by 23% and online by 77% which shows the entrepreneurship potential of FIS students consisting of seven business categories offered, namely fashion, beauty, food and beverage, services, souvenirs, credit and bills, and others.