Miracle-dz/UniFAR-FTUs huggingface dataset:
Low-frequency noise in III-V high-speed devices

Low-frequency noise results obtained for III-V pseudomorphic high electron mobility transistors (PHEMTs) and heterojunction bipolar transistors (HBTs) are reviewed. The experimental noise set-up is presented and the equivalent circuits of devices including noise sources are established. Excess low-frequency noise comprises 1/f and Lorentzian-type components. An overview of gate and drain low-frequency noise of heterostructure field-effect transistors is provided in the paper. Different activation energy values attributed to traps are also reported. The authors concentrate on the 1/f noise of GaAs-based PHEMTs. The results are analysed with the help of an equivalent circuit deduced from a study of the conduction. The fundamental 1/f noise sources are analysed and modelled according to the different bias range. With regard to HBTs, results for AlGaAs/GaAs, GaInP/GaAs and InP/InGaAs are used for comparison. The effect of the DX centre on the different materials is investigated. The analysis against the bias of the 1/f noise level of the current spectral density referred to the input Si/sub n/ gives information on the origin of the noise. The experimental bias dependencies of Si/sub n/ are compared to those available in the literature and are discussed. The importance of electrical passivation for the improvement of noise is investigated. An analysis of noise against emitter area and emitter perimeter is undertaken for an accurate location of noise sources.
A Narrative Literature Review of Bias in Collecting Patient Reported Outcomes Measures (PROMs)

There is a growing interest in the collection and use of patient reported outcomes because they not only provide clinicians with crucial information, but can also be used for economic evaluation and enable public health decisions. During the collection phase of PROMs, there are several factors that can potentially bias the analysis of PROM data. It is crucial that the collected data are reliable and comparable. The aim of this paper was to analyze the type of bias that have already been taken into consideration in the literature. A literature review was conducted by the authors searching on PubMed database, after the selection process, 24 studies were included in this review, mostly regarding orthopedics. Seven types of bias were identified: Non-response bias, collection method related bias, fatigue bias, timing bias, language bias, proxy response bias, and recall bias. Regarding fatigue bias and timing bias, only one study was found; for non-response bias, collection mode related bias, and recall bias, no agreement was found between studies. For these reasons, further research on this subject is needed in order to assess each bias type in relation to each medical specialty, and therefore find correction methods for reliable and comparable data for analysis.
Effect of Adjuvant and Palliative Chemotherapy in Large Cell Neuroendocrine Carcinoma of the Lung: A Systematic Review and Meta-Analysis

Simple Summary Adjuvant chemotherapy revealed a better outcome than surgery only, but there was no statistical difference in patients with stage IA. The small cell lung cancer regimen (SCLC) was frequently selected in adjuvant chemotherapy. The SCLC regimen showed better survival than the non-SCLC regimen as palliative chemotherapy at the endpoint of the odds ratio of mortality after two years. Abstract Background: Pulmonary large cell neuroendocrine carcinoma (LCNEC) is a rare subset of lung carcinoma with poor overall survival. Methods: A systematic review following a meta-analysis of studies was performed to identify the effect of different selections of chemotherapy in LCNEC. Articles providing overall survival data for adjuvant chemotherapy or palliative chemotherapy for LCNEC were eligible. The odds ratio (OR) of mortality at one or two years after chemotherapy was evaluated. Results: A total of 16 reports were finally included in the quantitative synthesis, involving a total of 5916 LCNEC patients. Adjuvant chemotherapy was administered to 1303 patients, and palliative chemotherapy was administered to 313 patients using either a small cell lung cancer (SCLC) or a non-small cell lung cancer (NSCLC) regimen. The OR for adjuvant chemotherapy was 0.73 (95% confidence interval (CI): 0.59 to 0.89, p = 0.002). The SCLC regimen showed an OR of 0.52 (95% CI: 0.11 to 2.38, p = 0.40) after one year, and 0.32 (95% CI: 0.11 to 0.89, p = 0.03) after two years, compared with the NSCLC regimen. Conclusions: Adjuvant chemotherapy for pulmonary large cell neuroendocrine carcinoma improved the outcome after surgery. The SCLC regimen showed better survival than the NSCLC regimen as palliative chemotherapy.
Intangible Asset Fragility and Stock Price Crash Risk

We evaluate the effect of intangible intensity, the extent of intangible assets held by firms, on stock prices. We find a significantly higher stock price crash risk for listed US firms with greater intangible intensity from 1983 to 2017. Intangible asset impairments and valuation uncertainty are identified as two underlying channels through which stock price crash risk is affected. In addition, the positive effect of intangible intensity on crash risk is stronger in firms with higher information opacity and shareholder litigation risk, but attenuated in firms with better credit ratings. Overall, our findings demonstrate the fragility of intangible assets and provide implications for financial regulation and portfolio management. JEL Classification: G10, G11, G14
A tracer release experiment to investigate uncertainties in drone-based emission quantification for methane point sources

Abstract. Mapping trace gas emission plumes using in-situ measurements from unmanned aerial vehicles (UAV) is an emerging and attractive possibility to quantify emissions from localized sources. Here, we present the results of an extensive tracer-release experiment in Dübendorf, Switzerland, which was conducted to develop an optimal quantification method and to determine the related uncertainties under various environmental and sampling conditions. Atmospheric methane mole fractions were simultaneously measured using a miniaturized fast-response Quantum Cascade Laser Absorption Spectrometer (QCLAS) and an Active AirCore system mounted on a commercial drone. Emission fluxes were estimated using a mass-balance method by flying the drone-based system through a vertical cross-section downwind of the point-source perpendicular to the main wind direction at multiple altitudes. A refined kriging framework, called cluster-based kriging, was developed to spatially map individual methane measurement points into the whole measurement plane, while taking into account the different spatial scales between background and enhanced methane values in the plume. We found that the new kriging framework resulted in better quantification compared to ordinary kriging. The average bias of the estimated emissions was −1 % and the average residual of individual errors was 54 %. Direct comparison of QCLAS and AirCore measurements shows that AirCore measurements are smoothened by 20 s and temporally shifted and stretched by 7 s and 0.06 seconds for every second of QCLAS measurement, respectively. Applying these corrections to the AirCore measurements and successively calculating an emission estimate shows an enhancement of the accuracy by 3 % as compared to its uncorrected counterpart. Optimal plume sampling, including the downwind measurement distance, depends on wind- and turbulence conditions and it is furthermore limited by numerous parameters such as the maximum flight time, and the measurement accuracy. Under favorable measurement conditions, emissions could be quantified with an uncertainty of 30 %. Uncertainties increase when wind speeds are below 2.3 m s−1 and directional variability is above 33°, and when the downwind distance is above 75 m. In addition, the flux estimates were also compared to estimates from the well-established OTM-33A method involving stationary measurements. A good agreement was found, both approaches being close to the true-release and uncertainties of both methods usually capturing the true-release.
Performance of a Solar PV Tracking System on Tropic Regions

Climate change is currently a large concern for human society, particularly on high dependence on fossil fuels. A considerable amount of research effort is focused on renewable energies, especially solar photovoltaic (PV) generation systems. For solar PV systems, energy conversion efficiency is an active research topic, with many approaches being developed to solve this problem. One of these approaches is solar tracking systems, where the solar PV moves with the sun in order to capture the maximum direct solar radiation. This paper proposes a solar PV single-axis tracking system and compares the energy conversion efficiency with respect to a fixed solar PV installation. The proposed mechanical system is based on a servomotor moving a PV on a shaft, covering 180 degrees. A seven-element sensor is used to measure and estimate the angle of maximum solar radiation. Also, a control system was used to obtain the optimal power output from the solar PV. The system was tested in Fusagasuga, Colombia, which is located in the tropics region.
Power permutation modulation in multiple‐input multiple‐output systems

The forthcoming communications standards are conjectured to require unprecedentedly high spectral efficiency values. Motivated by this fact, we propose a new transmission scheme for multiple‐input multiple‐output systems, which is termed as power permutation modulation (PPM). In addition to the conventional data‐carrying modulated symbols, some amount of extra information is conveyed in the distinct permutations of power allocation levels associated with the modulated symbols. The detection of the additional bits is performed by a power permutation recovery process at the receive side. Unlike the common approach, the power allocation is exploited as a new degree of freedom for carrying information without requiring any channel state information at the transmitter. The application of the introduced method is exemplified for zero‐forcing beamforming and space‐time block coding systems under digital phase modulation. It is shown that, without any important additional complexity, some notable signal‐to‐noise ratio gains (as large as 3 dB) are attained as compared to the standard approaches. An exact closed‐form result on the bit error rate (BER) of the presented PPM scheme is provided. The obtained expression is used to obtain the optimum power allocation levels such that the overall BER is minimized.
Role of global longitudinal strain in discriminating variant forms of left ventricular hypertrophy and predicting mortality.

OBJECTIVE In this study, we aimed to compare the functional adaptations of the left ventricle in variant forms of left ventricular hypertrophy (LVH) and to evaluate the use of two-dimensional speckle tracking echocardiography (2D-STE) in differential diagnosis and prognosis. METHODS This was a prospective cohort study of 68 patients with LVH, including 20 patients with non-obstructive hypertrophic cardiomyopathy (HCM), 23 competitive top-level athletes free of cardiovascular disease, and 25 patients with hypertensive heart disease (HHD). All the subjects underwent 2D transthoracic echocardiography (TTE) and 2D-STE. The primary endpoint was all-cause mortality. Global longitudinal strain (GLS) below -12.5% was defined as severely reduced strain, -12.5% to -17.9% as mildly reduced strain, and above -18% as normal strain. RESULTS The mean LV-GLS value was higher in athletes than in patients with HCM and HHD with the lowest value being in the HCM group (HCM: -11.4±2.2%; HHD: -13.6±2.6%; and athletes: -15.5±2.1%; p<0.001 among groups). LV-GLS below -12.5% distinguished HCM from others with 65% sensitivity and 77% specificity [area under curve (AUC)=0.808, 95% confidence interval (CI): 0.699-0.917, p<0.001]. The median follow-up duration was 6.4±1.1 years. Overall, 11 patients (16%) died. Seven of these were in the HHD group, and four were in the HCM group. The mean GLS value in patients who died was -11.8±1.5%. LV-GLS was significantly associated with mortality after adjusting age and sex via multiple analysis (RR=0.723, 95% CI: 0.537-0.974, p=0.033). Patients with GLS below -12.5% had a higher risk of all-cause mortality compared with that of patients with GLS above -12.5% according to Kaplan-Meier survival analysis for 7 years (29% vs. 9%; p=0.032). The LV-GLS value predicts mortality with 64% sensitivity and 70% specificity with a cut-off value of -12.5 (AUC=0.740, 95% CI: 0.617-0.863, p=0.012). CONCLUSION The 2D-STE provides important information about the longitudinal systolic function of the myocardium. It may enable differentiation variable forms of LVH and predict prognosis.
How to Improve Safety Commitment: A Case Study on a Plastic Manufacturer in East Java

Introduction: Every year, work accidents frequently occur at PT. X. The initial survey showed a lack of control and commitment to be the main problems. Commitment is the core of the implementation of Occupational Health and Safety (OHS). This study aims to determine the factors that can increase safety commitment of workers. Method: This study used a quantitative approach with a cross-sectional design. In this study, the independent variables were age, gender, years of service, education level, safety motivation, management of safety commitment, safety communication, and social support. Meanwhile, the dependent variable was the safety commitment. 78 workers were selected using a simple random sampling technique from a population of 395 workers. Questionnaires were used to collect data. Data analysis used a multinomial logistic regression test. Results: 64.1% of workers were aged 41-51 years old, 56.4% were females, 82.0% had >10 years of service, 75.6% had a secondary education level, 56.4% had high safety motivation, 57.7% assessed management commitment to safety as low, 59.0% assessed safety communication as less, 52.6% had high social support, and 37.2% tended to have continuous safety commitment. Characteristics of workers (age, gender, years of service, education level), safety motivation, and social support did not affect safety commitment. Meanwhile, management commitment to safety (p=0.004) and safety communication (p=0.014) affected safety commitment of workers. Conclusion: The way to increase workers' commitment to safety is to increase the company's commitment to OHS and improve safety communication efforts.Keywords: management commitment to safety, safety commitment, safety communication
Workforce planning and allocation for mid-volume truck manufacturing: A case study

A case study for the short-term workforce planning and allocation for labour-intensive transfer lines is addressed. Trucks are assembled on a serial line, and they show large differences in the processing times at each station. These differences are due to the assembling options provided to the customers. Given the assignment of operations to stations, we have to find a loading sequence for the products, a worker allocation and a floater time allocation to minimize the whole labour costs at the line. We develop a solution approach for this problem and, in particular, discuss the necessities and implications by considering a rolling planning horizon. Especially, when planning for a number of subsequent shifts, we have to model the time interdependencies carefully. The results of the numerical studies show that relevant savings can be achieved by using an advanced planning system.
The Study of Trust Evaluation Model Based on Improved AHP and Cloud Model in IoT

Because nodes in the loT(Internet of Things) are widely distributed and most of them are unattended, so single node is vulnerable to be attacked and destroyed. Once one node is destroyed or attacked, the whole loT will be faced with tremendous security problems. This paper proposed a Trust Evaluation Model of loT based on AHP and Backward Cloud Model. In the model, in order to be solve the problem that nodes in loT have limited resources, the paper made use of the improved AHP(Analytic Hierarchy Process) and Reverse Cloud Model method, which can work with simple calculation and few resources. In the last, we simulate the method using omnet++ and simulation result show that the model can evaluate the trust value of the malicious node that executes bad communication behaviours fast and also reduce the possibility of wrong judgment.
Pengaruh Solvabilitas terhadap Profitabilitas (Studi pada Perusahaan Asuransi Kerugian yang Terdaftar di Bursa Efek Indonesia Tahun 2013-2018)

Insurance Company is developing, proved with the amount of insurance companies now, because companies need to minimalize their risk There were several insurance companies warned by Financial Services Authority. This research has purpose to uncover the impact of Risk Based Capital to Return On Asset.The independent variable is RBC and dependent variable is ROA. The methode is explanatory and quantitative methode with secondary data which is annual financial reports period 2013 – 2018 in insurance companies listed on Indonesia Stock Exchangd that dertermined 5 companies as sample.The statistic are classic assumption test, simple linear regretion, coefficient of determination, and hypothesis test with SPSS version 23. The result by t test showed that Risk Based Capital has positive and significant influence on the Return On Asse. Where the change in Risk Based Capital can explain the change in Return On Asset by 44.9% while the rest is influenced by other factors.
A Frequency Notched Inverted-trapezoid UWB Antenna

A new ultra wideband monopole antenna is presented in this paper. An inverted- trapezoid structure is constructed to obtain ultra wideband (UWB) performance. The parameters and characteristics of the antenna and the simulation results show that the ultra wideband performance is achieved with the inverted-trapezoid structure. An inverted-trapezoid slot is used to be exempt from interference with existing wireless systems. DOI: 10.2529/PIERS061006002923
Employees’ Communicative Behaviors in Response to Emotional Exhaustion: The Moderating Role of Transparent Communication

ABSTRACT On the basis of the literature across various strategic communication disciplines, including organizational communication, business, and public relations, this study examined the role of employees’ emotional exhaustion in the workplace in influencing their communicative behaviors. Moreover, this study identified the effective communication strategy to such exhausted employees. Results of an online survey among full-time employees in the U.S. showed that employees who experience emotional exhaustion at work are less likely to have a favorable employee–organization relationship (EOR), resulting in less advocative behavior and more adversarial behavior toward the organization. As a moderator, transparent internal communication played a significant role in mitigating the negative effect of emotional exhaustion on EOR and advocative behavior. However, transparent communication did not have a significant moderating effect between EOR and employees’ adversarial behavior. Theoretical and practical implications for strategic internal communication are discussed.
A T‐junction power divider FED circularly polarized cavity backed slot antenna

A circularly polarized antenna realized by a power divider fed cavity backed slot antenna is presented in this article.The cavity backed slot antenna is constructed on a single layer substrate by using substrate integrated waveguide (SIW) technique. A T‐junction power divider with equal magnitude and 90° phase difference outputs is adopted as the parallel feed to excite the SIW backed cavity. Circularly polarized radiation can be generated when two orthogonal cavity modes are excited simultaneously in the backed cavity. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:107–109, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26482
Can Team Resilience Boost Team Creativity Among Undergraduate Students? A Sequential Mediation Model of Team Creative Efficacy and Team Trust

Although recent literature has highlighted the critical role of resilience in creativity literature, existing findings have failed to indicate the processes through which resilience contributes to creativity at the graduate level. The current study fills this gap by hypothesizing the influence of team resilience on team creativity through a sequential mediating mechanism. A time lagged research study was conducted, and a sample of 201 undergraduate students and their teacher filled out questionnaires at three different time points (with 2-week intervals). After aggregating the data at the team level, we employed the PROCESS macro in SPSS to analyze data and test all the hypotheses through performing a sequential mediation analysis. We found that (a) team resilience would predict team creativity; and (b) team efficacy and team trust sequentially mediated the relation between team resilience and team creativity. The results in our study advance the emergent literature on linking resilience and creativity for the practical applications of resilience and creativity in education settings.
Bending Behavior of Cylindrical Web Panels

The stress distribution in cylindrical web panels of horizontally curved girders subjected to an applied moment is studied analytically. Both the membrane state of stress in the plane of the web and the web bending stresses resulting from the curvature of the panel are considered. A simplified mathematical model which treats the web as a series of curved strips (arches) is used. Solutions for this model are obtained using the Rayleigh-Ritz method. The influence of curvature on the resulting stresses in curved webs is presented. Recommendations for the allowable bending stresses in curved beams expressed in terms of the web depth-to-thickness ratio as well as limiting web slenderness ratios are established.
Synthesis method of series-fed microstrip antenna arrays

A method for non-uniformly spaced series-fed rectangular microstrip array synthesis is given. By this approach the problem of patch array design turns out to be slot array synthesis. The resulting equivalent configuration gives the necessary parameters for the microstrip array geometry. Applications on Taylor, Bayliss and shaped-beam patterns show the validity of the method.