Miracle-dz/UniFAR-FTUs huggingface dataset:
Analysis of repairable system failure data using time series models

Repairable system reliability analysis is very important to industry and, for complex systems, replacing a failed component is the most commonly used corrective maintenance action as it is an inexpensive way to restore the system to its functional state. However, failure data analysis for repairable system is not an easy task and usually a number of assumptions which are difficult to validate have to be made. Despite the fact that time series models have the advantage of few such assumptions and they have been successfully applied in areas such as chemical processes, manufacturing and economics forecasting, its use in the field of reliability prediction has not been that widespread. In this paper, we examine the usefulness of this powerful technique in predicting system failures. Time series models are statistically and theoretically sound in their foundation and no postulation of models is required when analysing failure data. Illustrative examples using actual data are presented. Comparison with the traditional Duane model, which is commonly used for repairable system, is also discussed. The time series method gives satisfactory results in terms of its predictive performance and hence can be a viable alternative to the Duane model.
Ambient vibration survey of the bosporus suspension bridge

Traffic and wind excitation has been used to obtain the dynamic characteristics of the first Bosporus (Bogazici) Suspension Bridge. Structural symmetry and the absence of suspended side-spans allowed attention to be focused on the main span and the Asian tower. A detailed comparison is given between these modes and corresponding calculated modes, obtained by use of a three-dimensional finite element model which includes a geometric stiffness matrix. Of particular interest is the validity of the theoretical model used for the box-deck. Comparison with a more limited study made in 1973 shows that the bridge continues to behave as it was designed to behave, particularly with regard to the deck-tower interface. From natural frequency measurements of two hangers, the load which they carry was assessed
The Value of the Illness-Death Model for Predicting Outcomes in Patients with Non–Small Cell Lung Cancer

Purpose The illness-death model (IDM) is a comprehensive approach to evaluate the relationship between relapse and death. This study aimed to illustrate the value of the IDM for identifying risk factors and evaluating predictive probabilities for relapse and death in patients with non–small cell lung cancer (NSCLC) in comparison with the disease-free survival (DFS) model. Materials and Methods We retrospectively analyzed 612 NSCLC patients who underwent a curative operation. Using the IDM, the risk factors and predictive probabilities for relapse, death without relapse, and death after relapse were simultaneously evaluated and compared to those obtained from a DFS model. Results The IDM provided more detailed risk factors according to the patient’s disease course, including relapse, death without relapse, and death after relapse, in patients with resected lung cancer. In the IDM, history of malignancy (other than lung cancer) was related to relapse and smoking history was associated with death without relapse; both were indistinguishable in the DFS model. In addition, the IDM was able to evaluate the predictive probability and risk factors for death after relapse; this information could not be obtained from the DFS model. Conclusion Compared to the DFS model, we found that the IDM provides more comprehensive information on transitions between states and disease stages and provides deeper insights with respect to understanding the disease process among lung cancer patients.
Maternal Informal Learning Experiences that Shape Parenting Practices

Objective: Current understanding of the linkage between maternal education and parenting practices has largely been informed using a narrow definition of educational attainment—the highest level of education an individual has completed. However, the proximal processes that shape parenting, including informal learning experiences, are also important to understand. Less is known about the informal learning experiences that shape parenting decisions and practices. To this end, we conducted a qualitative inquiry about the informal learning experiences of mothers of children ages 3–4 years with the specific goal of understanding how maternal informal learning experiences shape parenting decisions and practices. Design: We conducted interviews with 53 mothers from across the United States who had previously participated in a randomized controlled trial (RCT) of an intervention targeting infant care practices. We recruited a purposive sample of mothers chosen to maximize diversity across educational attainment and adherence to infant care practices targeted in the RCT. Using a grounded theory approach, data were analyzed using an iterative process for organizing codes and themes that mothers identified as informal learning experiences. Results: We identified seven themes representing distinct types of maternal informal learning experiences that impact parenting practices, including: (1) experiential learning during childhood; (2) experiential learning during adulthood; (3) interpersonal interactions including via social media; (4) experiences with non-interactive media sources; (5) informal trainings; (6) beliefs; and (7) current circumstances. Conclusions: Multiple informal learning experiences inform the parenting decisions and practices of mothers with varying levels of formal educational attainment.
Zombie Lending: Theoretical, International, and Historical Perspectives

This article surveys the theory on zombie lending incentives and the consequences of zombie lending for the real economy. It also offers a historical perspective by reviewing the growing empirical evidence on zombie lending along three dimensions: ( a) the role of undercapitalized banks, ( b) effects on zombie firms, and ( c) spillovers and distortions for non-zombie firms. We then provide an overview of how zombie lending can be attenuated. Finally, we use a sample of US publicly listed firms to compare various measures proposed in the literature to classify firms as “zombies. ” We identify definitions of zombie firms that are adequate to investigate economic inefficiency in the form of real sector competitive distortions of zombie lending. We find that only definitions based on interest rate subsidies are able to detect these spillovers and thereby provide evidence in support of credit misallocation. Expected final online publication date for the Annual Review of Financial Economics, Volume 13 is November 2022. Please see http://www.annualreviews. org/page/journal/pubdates for revised estimates.
Dynamic interaction of bridge–train system under non‐uniform seismic ground motion

The probability that an earthquake occurs when a train is running over a bridge in earthquake‐prone regions is much higher than before, for high‐speed railway lines are rapidly developed to connect major cities worldwide. This paper presents a finite element method‐based framework for dynamic analysis of coupled bridge–train systems under non‐uniform seismic ground motion, in which rail–wheel interactions and possible separations between wheels and rails are taken into consideration. The governing equations of motion of the coupled bridge–train system are established in an absolute coordinate system. Without considering the decomposition of seismic responses into pseudo‐static and inertia‐dynamic components, the equations of motion of the coupled system are formed in terms of displacement seismic ground motions. The mode superposition method is applied to the bridge structure to make the problem manageable while the Newmark‐β method with an iterative computation scheme is used to find the best solution for the problem concerned. Eight high‐speed trains running over a multi‐span steel truss‐arch bridge subject to earthquakes are taken as a case study. The results from the case study demonstrate that the spatial variation of seismic ground motion affects dynamic responses of the bridge–train system. The ignorance of pseudo‐static component when using acceleration seismic ground motions as input may underestimate seismic responses of the bridge–train system. The probability of separation between wheels and rails becomes higher with increasing train speed. Copyright © 2011 John Wiley & Sons, Ltd.
A simple model for threshold voltage of surrounding-gate MOSFET's

We propose a threshold voltage model for surrounding-gate MOSFETs. The model treats the ends and the double-gate regions of the channel as separate devices operating in parallel. The threshold voltage for the full device is obtained as the perimeter-weighted sum of the threshold voltages of the two parts enabling simple analytic threshold models to be used. Short channel effects and drain-induced barrier lowering are also modeled in this manner.
Bend losses in GaAs/AlGaAs optical waveguides

Circular bends with low excess bend loss (? l dB) and radii of a few millimetres were fabricated using GaAs/AlGaAs single-heterostructure rib waveguides with propagation loss ? 1 dB/cm. The effect of rib geometry and roughness due to bend pattern quantisation on the excess bend loss at 1.52/? i was investigated.
Aberrant Amplitude of Low-Frequency Fluctuation and Degree Centrality within the Default Mode Network in Patients with Vascular Mild Cognitive Impairment

This study aimed to investigate whole-brain spontaneous activities changes in patients with vascular mild cognitive impairment (VaMCI), and to evaluate the relationships between these brain alterations and their neuropsychological assessments. Thirty-one patients with VaMCI and thirty-one healthy controls (HCs) underwent structural MRI and resting-state functional MRI (rs-fMRI) and neuropsychological assessments. The functional alterations were determined by the amplitude of low-frequency fluctuation (ALFF) and degree centrality (DC). The gray matter volume (GMV) changes were analyzed using voxel-based morphometry (VBM). Linear regression analysis was used to evaluate the relationships between the structural and functional changes of brain regions and neuropsychological assessments. The VaMCI group had significantly lower scores in the Montreal Cognitive Assessment (MoCA), and higher scores on the Hamilton Anxiety Rating Scale (HAMA) and Hamilton Depression Rating Scale (HAMD). Compared to the HCs, the VaMCI group exhibited GM atrophy in the right precentral gyrus (PreCG) and right inferior temporal gyrus (ITG). VaMCI patients further exhibited significantly decreased brain activity within the default mode network (DMN), including the bilateral precuneus (PCu), angular gyrus (AG), and medial frontal gyrus (medFG). Linear regression analysis revealed that the decreased ALFF was independently associated with lower MoCA scores, and the GM atrophy was independently associated with higher HAMD scores. The current finding suggested that aberrant spontaneous brain activity in the DMN might subserve as a potential biomarker of VaMCI, which may highlight the underlying mechanism of cognitive decline in cerebral small vessel disease.
Critical Space Analysis

The construction space scheduling problem has received relatively little attention from researchers and practitioners. We now have sophisticated methods of planning and analyzing the sequence of tasks within the work breakdown structure through time, but the problem of planning where on site those tasks are to be executed is not well-supported especially as those spaces are dynamic as the project progresses. We know that congestion on site reduces output and generates hazards, yet construction planners presently have to rely upon experience and intuition. The research reported here presents a decision support tool for construction project planners to help them address the space scheduling problem. After a review of recent developments in construction space scheduling, the concept of critical space analysis is presented. This forms the basis of decision support tools presented for marking up available space, allocating tasks to spaces, and analyzing and optimizing space loading in relation to the critical path—what we call space-time broking. Requirements capture and evaluation reports from construction planners suggest that the tools presented here have immediate practical relevance. The paper will, therefore, be of interest to both practitioners and researchers.
New installation scheme for viscoelastic dampers using cables

Passive energy dissipation devices, such as, viscous, viscoelastic, and friction devices are generally installed in buildings using diagonal or chevron braces. To increase the effective damping force and to reduce the damper volume, various magnifying system of the damper displacement, such as, toggle brace system and scissor-jack-damper configuration have been developed with increase in installation cost. In this study, new installation scheme for passive dampers was proposed using cables installed in such a way that relative displacement equal to storey displacement occurs between the cable and the structure when the structure is subjected to lateral load. The cables can be installed continuously or discretely between base and top storey of the structure. To verify the validity of the proposed method nonlinear dynamic analysis of model structures with viscoelastic dampers installed using the proposed configuration scheme was carried out using three earthquake records and two sinusoidal forces. According.
Hue discrimination and light sources

Eight experiments are briefly described in which the influence of lamp type, illuminance and subject's age and experience on the performance of the Farnsworth-Munsell 100 hue test were examined. Statistical analysis showed that either the CIE gamut area or the colour rendering index of the lamp type could be used as an approximate predictor of the level of performance on the test; the larger the CIE gamut area or the higher the colour rendering index, the better the performance. Compared with the effect of lamp type the influence of illuminance was small, the only significant effect being an improvement in performance at higher illuminances for the older age group. Age itself had a large effect. The older age group consistently produced much worse performances than the young or middle age groups. Experience was not found to be a significant factor.
Error Types and Related Error Detection Mechanisms in the Aviation Domain: An Analysis of Aviation Safety Reporting System Incident Reports

Human error is considered a contributing factor in 70% to 80% of all aviation accidents. Because errors can never be eliminated completely, a further reduction of the already low accident rate in this domain will require investments in better support for error management. In particular, a better understanding of the nature and effectiveness of error detection mechanisms is needed. With this goal in mind, NASA Aviation Safety Reporting System incident reports were analyzed in terms of the formal characteristics of underlying errors, the cognitive stage, and the performance level at which these errors occurred, and with respect to the processes that led to their detection and, thus, prevented these incidents from turning into accidents. The majority of incidents involved lapses (i.e., failures to perform a required action) or mistakes, such as errors in intention formation and strategy choice. These errors were most often detected based on routine checks and the observed outcome of an action, respectively. Most slips appear to have been discovered by the crew before they could lead to a problem worth reporting. Our findings suggest a need for more effective feedback in support of data-driven monitoring, especially in the case of errors of omission and for shared knowledge of intent between airborne and ground-based operators to promote the more timely and reliable detection of mistakes.
Thermal characterization of MESFETs using I-V pulsed and DC measurements

Thermal MESFET characterization is important for design purposes, particularly the determination of thermal resistance and thus channel temperature. In this paper a modeling protocol is suggested in order to extract thermal resistance and channel temperature for MESFET devices from pulsed and DC measurements. The pulsed measurement system was developed and used to produce isothermal I-V characteristics for a device test with different bias conditions. The isothermal I-V characteristics are then used in conjunction with DC measurements to extract channel temperature and thermal resistance. The experimental measurements show that thermal resistance depends not only on DC power dissipation but also on bias conditions.
Equivalent circuit representation of electromechanical transducers: II. Distributed-parameter systems

Distributed-parameter electromechanical transducers are examined theoretically with special regard to their dynamic electromechanical behaviour and equivalent circuits used to represent them. The circuits are developed starting from basic electromechanical transduction principles and the electrical and mechanical equations of equilibrium. Within the limits of the assumptions on boundary conditions, the theory presented is exact with no restrictions other than linearity. The link with lumped-parameter transducers, that were the subject of a previous publication will be indicated. Elementary electrostatic, electromagnetic, electrodynamic and piezoelectric transducers are used to illustrate the basic theory. Exemplary devices include a capacitive force (displacement) sensor, several types of a mechanical resonator, electromechanical filters, a piezoelectric thickness monitor and a piezoelectric acceleration sensor.
Chios Hospital Information System Assessment

A very important aspect for organizations that provide healthcare services is to have fully functional and successful information systems. A successful hospital information system can contribute to high quality healthcare services provided to the patients of the hospital. In this paper, is presented the evaluation of the information system of Chios Hospital, "Skylitsio". The survey was conducted using a questionnaire which consists demographic questions and questions that measure the factors of the DeLone & McLean success model. The participants of the survey were 71 users of the clinical information system. Cronbach's alpha reliability test, descriptive statistics, and further data analyses to investigate the relations between the factors of the DeLone & McLean success model were performed. Based on the results, the users of the information system are satisfied with it, as well as they find the system useful and easy to use. The average value of the "information quality" is 3.78 out of 5, the "system quality" is 3.61, the "service quality" is 3.45, the "use" is 3.83, the "user satisfaction" is 3.46, and the "user benefit" is 3.76. The research concludes with a validation of the DeLone & McLean success model and it seems that the information system of the General Hospital of Chios is successful based on the users' opinions.
A new species of the genus Tylototriton (Urodela, Salamandridae) from western Thailand

Abstract We describe a new species of the newt genus Tylototriton from Umphang Wildlife Sanctuary, Tak Province, western Thailand based on molecular and morphological evidence and named here as Tylototritonumphangensissp. nov. The new species is assigned to the subgenus Tylototriton and differs from other species in having dark-brown to blackish-brown body and limbs, truncate snout, prominent antero-medial ends of the expansion of the dentary bones, laterally protruding quadrate regions, indistinct and small rib nodules, a well-segmented vertebral ridge, and rough dorsolateral bony ridges, which are steeper anterior, and curved medially at the posterior ends. The molecular data show that Tylototritonumphangensissp. nov. differs from T.uyenoi sensu stricto by a 5% genetic sequence divergence of the mitochondrial NADH dehydrogenase subunit 2 region gene. The new species and T.uyenoi are both endemic to Thailand, distributed along the Northwest Thai (Dawna) Uplands of Indochina. To clarify the species boundary between Tylototritonumphangensissp. nov. and T.uyenoi, additional field research is needed in adjacent areas. Tylototritonumphangensissp. nov. is restricted to evergreen hill forests in Umphang Wildlife Sanctuary. We suggest that the new species should be classified as Endangered (EN) in the IUCN Red List.
Rise and Fall of Cultural Policy Participation in Novi Sad, Serbia

ABSTRACT This exploratory study examines cultural policy participation in the city of Novi Sad, Serbia. Policy participation was observed throughout the creation process of the first cultural development strategy of the city. Official strategic documents, in-depth interviews with members of cultural associations and observant participation have been employed to document this study. Six key themes reflect the consecutive phases of the cultural participation development process, namely initial restraint from participation, building trust and agency in decision making, inducing the creation of different spaces for participation, and disappointment and alienation of cultural actors. Although cultural policy participation has proven challenging, this attempt at fostering democratic decision-making has provided an invaluable experience to the cultural associations that participated in the process.
Physical optics approximation of the RCS of an impedance surface

At radar frequencies, asymptotic techniques such as physical optics and the physical diffraction theory can be used for radar cross section prediction of the scattering from a material coated body of arbitrary shape. A physical optics formulation for a wide class of shapes is presented for use with the impedance surface model for lossy materials. Appropriate polarization dependence is incorporated. Both the monostatic and bistatic cases are considered through a uniform treatment of the radiation integrals. <<ETX>>
Factors Related to Gastritis Events At The Ages 17-21 Years Old in The Work Area of Pesanggrahan Public Health Center (Puskesmas) in 2018

Gastritis that occurs in developing countries is mostly experienced by young people with a predominant age of 20 years. The recurrence experienced can increase the risk of developing a disease that is more dangerous and difficult to cure, even causing death. This study was to determine the factors associated with the incidence of gastritis at the age of 17-21 years in the work area of ​​the Pesanggrahan Public Health Center in 2018. This study uses a quantitative type of research with a Case-Control study design. The population in this study were patients aged 17-21 years at the Pesanggrahan Public Health Center for the period June-August 2018. Cases were patients diagnosed with gastritis and controls were non-gastritis patients. Cases and controls were selected by accidental sampling technique as many as 50 people with a ratio of 1:1. Data were collected through interviews and analysis using the Chi-Square test with a value of = 0.05. The study showed that there was a relationship between several risk factors and the incidence of gastritis, including gender (OR=2,986, 95% CI = 2,680-3,654), knowledge (OR= 2,528, 95% CI=1,112-5,744), eating frequency (OR=9,333, 95% CI =1,121-77,704), Meal Time Interval (OR=5,670, 95%CI=2,144-14,997), Frequency of Drinking Tea (OR=2,923, 95% CI =1,245-6.865), Frequency of Spicy (OR=3.407, 95% CI =1.401-8.285), Frequency of Acid Eating (OR=1.196, 95% CI =1.801-2.478), Frequency of Instant Noodles (OR=10.444, 95% CI =2.855-38.211) while the risk factors which are not related to the incidence of gastritis are education, frequency of drinking coffee, frequency of drinking soda. It is necessary to improve health programs such as education, health promotion targeting teenagers in schools.