Miracle-dz/UniFAR-FTUs huggingface dataset:
Treatment of Polio Delayed Epidemic Model via Computer Simulations

: Through the study, the nonlinear delayed modelling has vital sig-nificance in the different field of allied sciences like computational biology, computational chemistry, computational physics, computational economics and many more. Polio is a contagious viral illness that in its most severe form causes nerve injury leading to paralysis, difficulty breathing and sometimes death. In recent years, developing regions like Asia, Africa and sub-continents facing a dreadful situation of poliovirus. That is the reason we focus on the treatment of the polio epidemic model with different delay strategies in this article. Polio delayed epidemic model is categorized into four compartments like susceptible, exposed, infective and vaccinated classes. The equilibria, positivity, boundedness, and reproduction number are investigated. Also, the sensitivity of the parameters is analyzed. Well, known results like the Routh Hurwitz criterion and Lyapunov function stabilities are investigated for polio delayed epidemic model in the sense of local and global respectively. Further-more, the computer simulations are presented with different traditions in the support of the analytical analysis of the polio delayed epidemic model.
Modular Multilevel Converters Part-I: A Review on Topologies, Modulation, Modeling and Control Schemes

This article is devoted to the Multi-level inverters review and in particular to the form and function of modular multilevel inverters (MMI), with their different topologies, modulation, modeling and control schemes Detailed analysis with their functions of MMI has been made in comprehensive manner with existing literature available till date. All existing methods are compared in detail with proposal for the best methods available. The article has made strategic conclusions on MMI to make the system more robust in operation with less complexity in design and control.
What Determines Muslim-Friendly Tourism in Aceh?

Aceh is the only province in Indonesia legally allowed to implement sharia law across all sectors, including the tourism industry. This study aims to analyze factors influencing Muslim-Friendly Tourism (MFT) in Aceh. Specifically, it examines the direct and indirect relationship between MFT with travel intention, destination image, and tourist attitude. Data is gathered through a questionnaire survey among 150 respondents that were selected using the convenience sampling method. To explain the tourist’s travel intentions, this study develops and tests a multiple regression analysis using the extended hierarchical linear modeling. Seven hypotheses were proposed regarding the relationships between MFT, tourist attitude, destination image, and travel intention constructs. The empirical results from the structural model suggest that MFT, destination image, and tourist attitude significantly influence travel intention; destination image and tourist attitude are the perfect mediators in influencing the MFT on travel intention to Aceh. These results have the implication in improving the promotions of tourism destinations in Aceh and developing more effective halal tourism positioning strategies for Aceh in particular and Indonesia in general.
Who’s making the decisions? How managers can harness artificial intelligence and remain in charge

Purpose While it is evident that the introduction of machine learning and the availability of big data have revolutionized various organizational operations and processes, existing academic and practitioner research within decision process literature has mostly ignored the nuances of these influences on human decision-making. Building on existing research in this area, this paper aims to define these concepts from a decision-making perspective and elaborates on the influences of these emerging technologies on human analytical and intuitive decision-making processes. Design/methodology/approach The authors first provide a holistic understanding of important drivers of digital transformation. The authors then conceptualize the impact that analytics tools built on artificial intelligence (AI) and big data have on intuitive and analytical human decision processes in organizations. Findings The authors discuss similarities and differences between machine learning and two human decision processes, namely, analysis and intuition. While it is difficult to jump to any conclusions about the future of machine learning, human decision-makers seem to continue to monopolize the majority of intuitive decision tasks, which will help them keep the upper hand (vis-à-vis machines), at least in the near future. Research limitations/implications The work contributes to research on rational (analytical) and intuitive processes of decision-making at the individual, group and organization levels by theorizing about the way these processes are influenced by advanced AI algorithms such as machine learning. Practical implications Decisions are building blocks of organizational success. Therefore, a better understanding of the way human decision processes can be impacted by advanced technologies will prepare managers to better use these technologies and make better decisions. By clarifying the boundaries/overlaps among concepts such as AI, machine learning and big data, the authors contribute to their successful adoption by business practitioners. Social implications The work suggests that human decision-makers will not be replaced by machines if they continue to invest in what they do best: critical thinking, intuitive analysis and creative problem-solving. Originality/value The work elaborates on important drivers of digital transformation from a decision-making perspective and discusses their practical implications for managers.
Turbulence measurements using sensors based on silicon technology

A small and highly sensitive flow velocity sensor was designed and fabricated using silicon microelectronic technology. To determine the performance of this silicon sensor, comparisons with a conventional hot-wire sensor were made in a well-defined two-dimensional turbulent flat-plate boundary layer at a constant Reynolds number of 1.2*10/sup 6/. The silicon sensor was found to have a spatial and frequency resolution that makes it suitable for turbulence measurements. In the investigated flow field the silicon sensor measures profiles of the mean velocity and the turbulence intensity with the same accuracy as the hot wire. The results of the flat-plate measurements were used for the development of new sensor configurations that allow the measurement of turbulent stresses and velocity and temperature correlations. <<ETX>>
A size-based scheduling to improve fairness and performance in 802.11 networks

Using wireless technologies to access the Internet (e.g., public hotspots) and setting small ad hoc networks (e.g., during a meeting), are common experiences for end users. Those environments are challenging for TCP because of the variability of the available bandwidth and the competition among flows that span over paths of different lengths and different types (wired or wireless). In this paper, we advocate that part of the problem comes from the use of the FIFO scheduling policy. We propose to replace FIFO with a size-based scheduling policy called LAS (Least Attained Service). We demonstrate that LAS solves most of the fairness issues encountered in those environments and makes a better use of the scarce bandwidth resources.
Battles of mobile payment networks: The impacts of network structures, technology complementarities and institutional mechanisms on consumer loyalty

Most information systems (IS) research takes for granted that consumers' adoption and the use of mobile payment (MP) applications are motivated by generic factors such as perceived usefulness and perceived ease of use. Challenging this assumption, we argue that the salient contextual characteristics of MP applications compel a reconsideration and problematization of research on MP adoption and use. Drawing on network effect theory, we examined how contextual network effects and contextual network types determine MP consumer loyalty. Using a mixed methods design, we find that direct network effects (i.e., network size, network centrality, network capability), indirect network effects (i.e., platform–application complementarity, application–service complementarity, service–strategy complementarity) and negative network effects (i.e., general institutional structure, general structural assurance, local institutional structure and local structural assurance) are key determinants of perceived benefits, which further promote MP consumer loyalty. Furthermore, except for general institutional structure and general structural assurance, all of the network effects are important predictors of switching costs, which influence MP consumer loyalty. Finally, the impacts of network effects on MP consumer loyalty differ between consumer‐ and service‐oriented networks. Our study enriches the IS literature by problematizing the core assumption underlying the MP adoption and use research and offering a contextual explanation of MP consumer loyalty. Our work also provides practitioners with insights into how to better leverage network effects on MP consumer loyalty.
The Use of Fabric Composite Frequency Selective Surface in Sandwich Structures for Low-Observable Radomes

In this work, the hybrid fabrics of carbon and quartz fibers as filters were adopted in PMI core sandwich structures for low-observable radomes. The advantages of fabric composite frequency selective surfaces (FCFSSs) are easily fabricated by braiding and shaped into curved surfaces. This paper mainly studied the electromagnetic (EM) transmission characteristics of the low-observable radome wall with composite FSS by 3-dimensional electromagnetic analysis software. First of all, the accuracy of the simulation model composed of up and down composite face sheets, a layer of composite FSS and PMI core was validated by comparing with experimental results. Then, the studies on electromagnetic transmission characteristics of the sandwich structure with composite FSS and the sensitivity analysis about the thickness and permittivity of face sheets and PMI core were carried out. The results show that the sandwich structure with single layer composite FSS can realize the function of frequency selection, limit the reflection at the resonance frequency and decrease the sensitivity of EM transmission loss about the thickness of sandwich structures.
Passenger Vehicle Occupant Fatality Rates by Type and Size of Vehicle

Summary The National Highway Traffic Safety Administration (NHTSA) has routinely published (NHTSA, 2005) passenger vehicle occupant fatality rates, both overall and in vehicles that rolled over, by the type of the vehicle, such as passenger cars, SUVs, pickup trucks or vans. These categories of vehicles are broad and may mask differences in rates that might exist between vehicles of different sizes within a type. This Research Note examines the occupant fatality rates by vehicle type and size and found that in all fatal crashes, when broken down by size, Compact Cars have the highest occupant fatality rate while the “large vans” category has the lowest occupant fatality rate. Among vehicles that rolled over, midsize SUVs have the highest occupant fatality rate while large passenger cars had the lowest occupant fatality rate.
Effect of Micronutrients on Thyroid Parameters

Micronutrients are involved in various vital cellular metabolic processes including thyroid hormone metabolism. This study aimed to investigate the correlation between serum levels of micronutrients and their effects on thyroid parameters. The correlation of serum levels of micronutrients and thyroid markers was studied in a group of 387 healthy individuals tested for thyroid markers (T4, T3, FT4, FT3, TSH, anti-TPO, RT3, and anti-Tg) and their micronutrient profile at Vibrant America Clinical Laboratory. The subjects were rationalized into three groups (deficient, normal, or excess levels of micronutrients), and the levels of their thyroid markers were compared. According to our results, deficiency of vitamin B2, B12, B9 and Vit-D25[OH] (p < 0.05) significantly affected thyroid functioning. Other elemental micronutrients such as calcium, copper, choline, iron, and zinc (p < 0.05) have a significant correlation with serum levels of free T3. Amino acids asparagine (r = 0.1765, p < 0.001) and serine (r = 0.1186, p < 0.05) were found to have a strong positive correlation with TSH. Valine, leucine, and arginine (p < 0.05) also exhibited a significant positive correlation with serum levels of T4 and FT4. No other significant correlations were observed with other micronutrients. Our study suggests strong evidence for the association of the levels of micronutrients with thyroid markers with a special note on the effect of serum levels of certain amino acids.
Oral and Skin Lesions Among Yemeni Khat Abusers While Chewing and After Quitting：Crosse-Sectional Survey

Background: Khat chewing is a routine practice in Yemen. Associations between Khat chewing and various adverse oral-dental health conditions have been recorded, however, adverse skin health evidence is still lacking. Objective: To investigate the difference between oral and skin symptoms and signs while chewing Khat and after quitting chewing among Yemeni khat abusers. Method: A descriptive cross-sectional study was conducted on a sample of 300 Yemeni Khat ex-chewer participants in china. Khat chewing status data, a range of oral and skin symptoms and signs, and other pertinent variables were collected using self-administered questionnaires by WeChat. The mean differences between oral and skin symptoms and signs while chewing Khat and after quitting chewing were investigated using the Paired Samples t-test. Result: Of the 300 Yemeni who participated in the study, 255(85%) were men and 45(15%) were women. The oral symptoms and signs mean while chewing was 0.26, 0.022 (standard deviation [SD], whereas that after quitting chewing Khat was 0.10 (mean), 0.269 (standard deviation [SD], t (12.00), P=0.00. The skin symptoms and signs mean while chewing was 0.13, 0.28 (standard deviation [SD], whereas that after quitting chewing Khat was M=0.06, 0.21(standard deviation [SD], t (9.407), P=0.00. Conclusions: There is a statistically significant difference between the mean oral and skin symptoms and signs while chewing and after quitting, whereas long-term Khat chewing negatively affects oral and skin health.
Creating Smart-er Cities: An Overview

The following offers an overview of what it means for cities to be “smart. ” It draws the supporting definitions and critical insights into smart cities from a series of papers presented at the 2009 Trans-national Conference on Creating Smart(er) Cities. What the papers all have in common is their desire to overcome the all too often self-congratulatory nature of the claims cities make to be smart and their over-reliance on a distinctively entrepreneurial route to smart cities. Individually, they serve to highlight the major challenges cities face in their drive to become smart. Collectively they begin to uncover what it means for cities to be smart. Together the papers offer an alternative route to smart cities laid down by those advocating a more neo-liberal roadmap, rooted in a critically aware knowledge-base and more realistic understanding of what it means for cities to be smart(er).
Interpolation techniques for real-time multifrequency waveform analysis

It is well-known that in discrete-Fourier-transform- (DFT-) based waveform analysis of multifrequency signals, spectral parameter accuracy can be increased by windowing the time samples and interpolating the DFT coefficients. It is shown that some relationships used in interpolation are affected very little by the number of processed samples, so that only the characteristics of the analyzed signal and the required accuracy affect the choice of this parameter. In particular, this makes the approach well suited for real-time analysis of signals with slowly time-varying spectra. Polynomial approximations of some relationships reduce the processing effort and, allow a greater freedom in the choice of the window functions, improving both accuracy and frequency resolution. <<ETX>>
The SPARKy (Spring Ankle With Regenerative Kinetics) Project: Design and Analysis of a Robotic Transtibial Prosthesis With Regenerative Kinetics

Even today’s most sophisticated microprocessor controlled ankle-foot prosthetic devices are passive. They lack internal elements that actively generate power, which is required during the “push-off” phase of normal able-bodied walking gait. Consequently, lower limb amputees expend 20–30% more metabolic power to walk at the same speed as able-bodied individuals. Key challenges in the development of an active ankle-foot prosthetic device are the lack of high power and energy densities in current actuator technology. Human gait requires 250W of peak power and 36 Joules of energy per step (80kg subject at 0.8Hz walking rate). Even a highly efficient motor such as the RE75 by Maxon Precision Motors, Inc. rated for 250W continuous power with an appropriate gearbox would weigh 6.6 Kg. This paper presents the first phase of the Spring Ankle with Regenerative Kinetics (SPARKy 1), a multi-phased project funded by the US Army Military Amputee Research Program, which seeks to develop a new generation of powered prosthetic devices based on the Robotic Tendon actuator, that significantly minimizes the peak power requirement of an electric motor and total system energy requirement while providing the amputee enhanced ankle motion and “push-off” power. This paper will present data to show the kinetic advantages of the Robotic Tendon and the electro-mechanical design and analysis of SPARKy 1 that will provide its users with 100% of required “push-off” power and ankle sagittal plane range of motion comparable to able-bodied gait.Copyright © 2007 by ASME
Modeling Mackerel Tuna (Euthynnus affinis) Habitat in Southern Coast of Java: Influence of Seasonal Upwelling and Negative IOD

We used fishery catch data from Cilacap Fishing Port and Copernicus data set in July 2016-December 2017 to investigate the impacts of Indian Ocean Dipole (IOD) on upwelling and mackerel tuna distribution in the southern coast of Java. This study implemented a Generalized Additive Model (GAM) for habitat prediction of mackerel tuna in the waters. The present study showed that the extreme negative IOD in 2016 caused a weaker southeasterly wind and even a reversal to the northwesterly wind, as seen off Sumatra in September 2016. The situation produced vertically mixed layer thickening and no upwelling during the southeast monsoon event 2016, consequently resulted in warmer temperature and fewer Chlorophyll-a (Chl-a) compared to the southeast monsoon event 2017. The mackerel tuna production significantly dropped in 2016 and rose in 2017, particularly during the upwelling event. The high Habitat Suitability Index (HSI) was found in southern Central Java in July 2017, expanded bigger in August 2017, and decreased in September 2017. During July and August 2016, the high HSI covered only a less area in the region and disappeared in September 2017. The high HSI indicates that the oceanographic factor is consistent with the catch probability of mackerel tuna.
Using a matching decomposition to examine the gender technology gap in Tanzanian agriculture

ABSTRACT The promotion of gender equality in access to productive resources relies on multiple valid arguments. However, whether equal resource endowment would result in equal agricultural productivity is controversial. Using panel data from Tanzania, we examine the agricultural technology levels of male and female managed plots, and find that female farmers operate on a significantly lower technology level than their male counterparts. Thus, even if female farmers used the same amount of agricultural inputs and were equally efficient as male farmers, they would probably still attain lower yields. We employ a matching and decomposition approach to analyse whether the difference in technology between male and female managed plots originates from observations outside the common support or different distributions of productive resources, household characteristics, or crop choice within the common support. We find that most plots under female and male management are well comparable and fall into the common support, but different distributions of considered characteristics cannot sufficiently explain the observed differences in levels of technology among female and male farmers. Only among the few farmers that apply inorganic fertilizer, female and male farmers work on a similar technology level.
Reduction of Voltage Harmonics in Solar Photovoltaic fed Inverter of Single Phase Stand Alone Power System

In this paper, an optimal harmonic stepped waveform (OHSW) method is proposed to reduce the voltage harmonics available at the output of solar photovoltaic (SPV) fed fifteen level cascaded multilevel inverter (CMLI). This technique is used to solve the harmonic elimination equations based on stepped waveform analysis in order to obtain the optimal switching angles. The OHSW method considers the output voltage waveform as four equal symmetries in each half cycle and the magnitude of six numbers of harmonic orders is reduced. Simulations are carried out in Matlab/Simulink and a 3 kWp solar plant is implemented in hardware to show the effectiveness of the proposed system.
Steady state analysis and performance characteristics of the LLC-type parallel resonant converter

In this paper, the steady state analysis of a new half-bridge DC-to-DC parallel resonant converter with LLC-type commutation circuit is presented. Based on the state variable transformation approach, a two-dimensional state-plane diagram is constructed to obtain the steady state response. A set of characteristic curves for output conversion and component stresses is derived from the analysis which can be used for the converter design. It is shown that based on these curves, the proposed resonant topology possesses more desirable features than the conventional parallel resonant converter. Also simulation results are presented to verify the theoretical approach. <<ETX>>