Miracle-dz/UniFAR-FTUs huggingface dataset:
Creating Customer Value and Its Implication To Customer Loyalty: An Empirical Study at Star Hotels in West Java, Indonesia

This paper is an empirical study that presents a comprehensive framework of relationships among customer value and customer loyalty in star hotel. The samples were collected from the guest were staying at 3 (three), 4 (four) and 5 (five) star hotels in West Java-Indonesia. A total of 210 respondents participated in this study and Structural Equation Modeling (SEM) were conducted to test the hipothesis. The test results provide an empirical evidence that the higher customer value will increase customer loyalty at star hotel. Beside, the results indicated that the customer value is a crucial role in the hotel industry and it is expected to be beneficial to the practice of business and hopefully it will also contribute to the development of management science, especially marketing management.
Analysis of Psychosocial Impact on Health Care Workers and General population of India during COVID 19 Pandemic using HAM-A scale.

BACKGROUND AND OBJECTIVES The frequency of outbreaks, pandemics is increasing across the globe which can be probably due to increased medical tourism, expansion of international exchange, travel and global warming. COVID-19 outbreak spread across the world within a few months of initiation from Wuhan City of China and affected all the countries across the globe except Antarctica. From the psychopathological view, this current COVID -19 is a stressor, trauma or stigma for health care workers as well as general population. Mental health and psychosocial consequences of COVID 19 has a serious impact on various categories of people : a) those directly involved with viral overload b) health care workers c) general population who are following social media d) quarantined individuals and their family members. The aim of our study was to determine the unforeseen psychosocial impact of COVID 19 pandemic on mental status of health care workers and general population. MATERIAL AND METHODS A cross sectional online survey using an anonymous questionnaire using snowball sampling strategy was done. The study included 480 respondents, out of which 197 were health care workers and 283 were general population. The participation was totally voluntary. Data collection took place over fifteen days . We included additional questions which were related to COVID-19 outbreak. The structured questionnaire used, consisted of questions that covered several areas. Anxiety level was assessed based on Hamilton Anxiety Rating scale ranging from 0-4 , consisted of 14 items. RESULTS AND CONCLUSION According to Hamilton anxiety rating scale it was seen that out of 197 health care workers, 27% had mild anxiety (<17), 18.7% had mild to moderate (18-24), 17.7% had moderate to severe (25-30), and 35.5% had very severe(>31). Out of 283 respondents representing general population, 26.14% had mild anxiety (<17), 17.31% had mild to moderate (18-24), 19.08% had moderate to severe (25-30), 37.45% had very severe(>31). The two groups were analyzed statistically, Z test applied between the two groups and it was found that the difference between the mean was found to be statistically significant with p value < 0.0001. The confidence interval was kept at 95%. Concerns about one's own health and that of their beloved ones (particularly elderly or suffering from any physical illness), as well as uncertainty about the future, can generate or exacerbate fear, depression, and anxiety.
Multidimensional sustainability labels in the Swedish food sector A study on consumer perception

Sustainability labels play an important role as information providers in the food sector. They serve consumers with information regarding a product’s sustainability performance and shows whether the product is compliant with certain rules and regulations. Consumers of today do however find it difficult to orient among the multitude of label alternatives and there are difficulties knowing exactly what the labels stand for. Additionally, the complex concept of sustainability is not fully portrayed through existing labels, as they communicate a one-dimensional viewpoint and lack transparency regarding its sustainability assessment criteria of the product. This lack of transparency creates information asymmetry between consumers and producers, which in turn prevents consumers from making an informed choice. To decrease the prevailing information asymmetry, multidimensional sustainability labels can be an alternative. This since they communicate multiple dimensions of sustainability in a simplified and objective manner. The main aim of the study is to examine whether different consumer attributes correlate with the perception of a multidimensional label. Further, the study aims to evaluate a multidimensional label’s potential to decrease the information asymmetry within the food sector. This was investigated through an online survey with 879 respondents. The results showed that (i) the only customer attribute that correlates with the perception of a multidimensional label is the respondent’s sustainability profile, (ii) the multidimensional label is considered necessary and complementary to existing labels as it clarifies a product’s sustainability performance, and (iii) further research is needed, e.g. regarding what design is easiest to comprehend, to successfully introduce it to the food sector.
Study of multiple parameter algorithm for wrong decisions in vertical handovers in wireless heterogeneous networks

One of the most important and challenging problems for seamless access of wireless and mobile services is mobility management, which will be regardless of the services and networks. Mobility management enables the Mobile (MT) to switch between networks for better resource management and is still a hot research topic. With so many handover algorithms available, how to evaluate and select the best algorithm becomes critical, thus making handover algorithms one of the essential components for the successful implementation of mobility. These algorithms need to be designed to provide the required Quality of Service (QoS) over a wide range of applications. This work is based on new criterion called Wrong Decision Probability (WDP) which is used to evaluate the performance of vertical handover algorithms and is based on signal strength (SS) and the available bandwidth (BW), which are combined together to obtain a better decision for handover. This paper proposes a new user centric algorithm for vertical handovers, which minimizes the wrong decisions during a handover process and maximize the user throughput by taking into account Bandwidth and Signal Strength of the network.
Robustness and bias of European excess death estimates in 2020 under varying model specifications

Various procedures are in use to calculate excess deaths during the ongoing COVID-19 pandemic. Using weekly death counts from 20 European countries, we evaluate the robustness of excess death estimates to the choice of model for expected deaths and perform a cross-validation analysis to assess the error and bias in each model's predicted death counts. We find that the different models produce very similar patterns of weekly excess deaths but disagree substantially on the level of excess. While the exact country ranking along percent excess death in 2020 is sensitive to the choice of model the top and bottom ranks are robustly identified. On the country level, the 5-year average death rate model tends to produce the lowest excess death estimates, whereas high excess deaths are produced by the popular 5-year average death count and Euromomo-style Serfling models. Cross-validation revealed these estimates to be biased under a causal interpretation of "expected deaths had COVID-19 not happened. "
Brain atrophy progression in Parkinson’s disease is shaped by connectivity and local vulnerability

Atrophy in multiple brain regions has been reported in the early stages of Parkinson's Disease, but there have been few longitudinal studies. How intrinsic properties of the brain, such as anatomical connectivity, local cell type distribution and gene expression combine to determine the pattern of disease progression remains unknown. One hypothesis proposes that the disease stems from prion-like propagation of misfolded alpha-synuclein via the connectome that might cause varying degrees of tissue damage based on local properties. Here we used MRI data from the Parkinson Progression Markers Initiative to test this model by mapping the progression of brain atrophy over one, two and four years and relating it to brain structural and functional connectivity, cell type expression and gene ontology enrichment analyses. In this longitudinal study, we derived atrophy progression maps for the three time points using deformation-based morphometry applied to T1-weighted MRI from 74 de novo Parkinson's Disease patients (50 Men: 24 Women) and 157 healthy control participants (115 Men: 42 Women). After regressing out the expected age and sex effects associated with normal aging, we found that atrophy significantly progressed over two and four years in the caudate, nucleus accumbens, hippocampus, and the temporal, parietal, occipital and posterior cingulate cortex. This progression was shaped by both structural and functional brain connectivity. Also, the progression of atrophy was more pronounced in regions with a higher expression of genes related to synapses and was related to the prevalence of oligodendrocytes and endothelial cells. In sum, we demonstrate that the progression of atrophy in Parkinson's Disease is in line with the prion-like propagation hypothesis of alpha-synuclein and provide evidence that synapses may be especially vulnerable to synucleinopathy. In addition to identifying vulnerable brain regions, this study reveals different factors that may be implicated in the neurotoxic mechanisms leading to progression in Parkinson's Disease.
Depressive and anxiety symptoms and COVID-19-related factors among men and women in Nigeria

Despite the greater adverse economic impacts in low and middle-income (LAMI) compared to high-income countries, fewer studies have investigated the associations between COVID-19-related stressor and mental health in LAMI countries. The objectives of this study were to determine the associations between COVID-19-related stressors and anxiety and depressive symptoms while controlling for known risk and protective factors and to investigate any sex differences. An online survey was carried out to assess sociodemographic, psychosocial (previous mental health conditions, sexual orientation, intimate partner violence and perceived social support) and COVID-19-related variables. Hierarchical linear regression was carried out with anxiety and depressive symptoms as separate outcomes. Of the COVID-19-related factors, testing positive for COVID-19 infection, having COVID-19 symptoms, having other medical conditions, self-isolating due to COVID-19 symptoms, worry about infection, perception of the pandemic as a threat to income and isolation during the lockdown were significantly associated with higher anxiety and depressive symptoms. Of these, worry about infection, isolation during lockdown and disruption due to the pandemic retained independent associations with both outcomes. The variance in anxiety and depressive symptoms explained by COVID-19-related factors was larger in women (6.1% and respectively) compared to men (6.1% and respectively). COVID-19-related stressors are associated with higher anxiety and depressive symptoms, with these effects being larger in men compared to women. Enhancing social support can be an affordable strategy to mitigate this risk but this needs to be investigated using appropriate designs.
A one-step conversion of propane and butane gas-fraction into methanol

This study investigates the oxidative-conversion of propane-butane (C3–C4) fraction into methanol via a proposed vapor–gas system: C3–C4 + O2 + hν/HNО3 → 2СН3ОН + C2H4 + C3H6. Experiments were performed by feeding propane-butane fraction, oxygen, and nitric-acid into a photo-chemical reactor under mild conditions at a temperature of 100 0 C, an atmospheric pressure (P = 1 atm.),visible-light excitation at a wavelength λ = 420 nm, and under the influence of nitric-acid. The major products are methanol, ethylene and
Synthesis of K-dominant tourmaline

Abstract K-dominant tourmaline was synthesized in the system MgO-Al2O3-B2O3-SiO2-KCl-H2O at 700 °C and 4.0 GPa. The crystals were zoned and characterized by less-potassic cores (1.46 wt% K2O) and more-potassic rims (up to 3.44 wt% K2O). The K-dominant tourmaline rims are represented by the average structural formula (K0.60(3)□0.36(3))(Mg2.60(7)Al0.40(7))(Al5.98(3)Si0.02(3))Si6O18(BO3)3(OH)3.92(7)O0.08(8), which is analogous to the structural formula of dravite and is referred to here as “K-dravite”; the maximum analyzed K content (3.44 wt% K2O) represents occupancy of the X site by 0.71 K pfu. The addition of Na to the system in approximately equal molar proportions to K results in the crystallization of K-bearing, Na-rich dravitic tourmaline, dramatically reducing the K content to an average value of 0.47 wt% K2O, corresponding to 0.10 K pfu. This suggests that a K-dominated bulk composition is necessary for K-dominant tourmaline crystallization. Compositional zoning shows that solid solution exists between end-member compositions of “K-dravite” [KMg3Al6Si6O18(BO3)3(OH)3(OH)] and dravite via the isovalent exchange XK(XNa)-1, magnesio-foitite via the coupled substitution XKYMg(X□YAl)-1, and “K-olenite” via the coupled substitution YMgOH(YAlO)-1. Structural refinement of the powder X-ray diffraction data provides a unit-cell volume for the synthesized “K-dravite” of 1580.1(5) Å3, which is greater than that determined for K-bearing dravitic tourmaline synthesized at the same conditions [1574.9(4) Å3]. We interpret this to reflect expansion of the crystal structure due to incorporation of the relatively large K+ ion.
Helical shape linen artificial muscles responsive to water

Artificial muscles, as the name suggests, can generate contractile force and movement from another source of energy in response to an external stimulus. Moisture-responsive artificial muscles can be manufactured from commodity natural fibers for smart textile applications taking advantage of the anisotropy, low cost and skin comfort of these fibers. Here we prepared water-driven artificial muscles by twisting linen yarns into spring-like cylindrical coils. Structural evolution, including increase in diameter and decrease in length of coils, is identified as a key factor to the actuation performances of the as-fabricated muscles. Artificial muscles with a single helical configuration can generate a large, reversible contraction stroke of about 22.5% and a high gravimetric work capacity during contraction of about 110 J kg−1 work capacity, which is many times greater than animal skeletal muscles and many synthetic fiber muscles. A torque-balanced double-helix muscle was constructed from the single helical muscle. The double helix showed good reversibility and high retention of contraction stroke (∼16.5%) in cyclic actuation tests. Finally, the as-fabricated water-responsive artificial muscles were used as manipulator arm of a miniature excavator.
Stress state of an earth dam under main loads considering data from field observations

Reliable and safe operation of hydro-technical structures (earth dams), in the seismic regions of the republic, requires researchers to constantly improve the calculation methods in accordance with the requirements of regulatory documents for basic and special combinations of loads, including seismic ones. A calculation method is proposed for estimating the stress state on the example of an earth dam of the Charvak HPP (in operation for 47 years) in a plane elastic statement under main loads, taking into account the real piecewise-inhomogeneous physical and mechanical characteristics of soil of the structure body. Individual results of solving the problem were compared with the data of long-term field observations. The calculation method allows determining the kinematic characteristics (displacements, settlements, stresses, pore pressure) of an earth dam, which makes it possible to predict the state of the most vulnerable places in the structure and, if necessary, to develop appropriate measures to strengthen them. The problem was solved by the numerical finite element method. According to the developed technique, the problem by the numerical finite element method was reduced to solving a system of linear equations relative to the desired displacements. The calculation results are presented in the form of isolines of the stress-strain state of the dam body under the main loads (gravitational forces, hydrostatics). The numerical results of solving the problem and their comparison with the data of field observations make it possible to determine the reliability of the developed methods and software and thereby determine the vulnerable zones of the earth dam, where the loss of stable operation of the structure is possible. Based on the research results, appropriate recommendations were made.
Influence of Ion–Neutral Damping on the Cosmic-Ray Streaming Instability: Magnetohydrodynamic Particle-in-cell Simulations

We explore the physics of the gyroresonant cosmic-ray streaming instability (CRSI) including the effects of ion–neutral (IN) damping. This is the main damping mechanism in (partially ionized) atomic and molecular gas, which are the primary components of the interstellar medium (ISM) by mass. Limitation of CRSI by IN damping is important in setting the amplitude of Alfvén waves that scatter cosmic rays (CRs) and control galactic-scale transport. Our study employs the magnetohydrodynamic (MHD)–particle-in-cell hybrid fluid-kinetic numerical technique to follow linear growth as well as post-linear and saturation phases. During the linear phase of the instability—where simulations and analytical theory are in good agreement—IN damping prevents wave growth at small and large wavelengths, with the unstable bandwidth lower for higher IN collision rates ν in. Purely MHD effects during the post-linear phase extend the wave spectrum toward larger k. In the saturated state, the CR distribution evolves toward greater isotropy (lower streaming velocity) by scattering off of Alfvén waves excited by the instability. In the absence of low-k waves, CRs with sufficiently high momentum are not isotropized. The maximum wave amplitude and rate of isotropization of the distribution function decrease at higher ν in. When the IN damping rate approaches the maximum growth rate of CRSI, wave growth and isotropization are suppressed. Implications of our results for CR transport in partially ionized ISM phases are discussed.
DFT Study of CO2 Activation on Doped and Ultrathin MgO Films.

The bonding mode of carbon dioxide with the surface of various forms of MgO has been investigated by means of density functional theory calculations. Four supports have been considered: the bare MgO(100) surface, the surface of Al-doped MgO, and ultrathin MgO/Ag(100) and MgO/Mo(100) films. Three forms of adsorbed CO2 have been investigated: physisorbed CO2, chemisorbed carboxylate, CO2–, and carbonate, CO32–. While on MgO(100) CO2 forms either the physisorbed species or the more stable surface carbonate, on Al-doped MgO carboxylate is the preferred species. The adsorption properties of one- or two-layer MgO films differ completely as a function of the metal support. On MgO/Ag(100) the properties of adsorbed CO2 are very similar to those of the MgO(100) surface (formation of carbonate, not of carboxylate); on MgO/Mo(100), on the contrary, both carbonate and carboxylate species can form, depending on the film thickness. On a one-layer film, both species are formed with a comparable stability, while for thic.
Assessment of Strategies for Rural Women Participation in Commercial Palm Kernel Oil Production for Wealth Creation in Taraba State, Nigeria

This study was an assessment of strategies for rural women participation in commercial palm kernel oil production for wealth creation in Taraba State, Nigeria. Four specific objectives and research questions guided the study. The study adopted the survey research design. The instrument for data collection was a 42-item structured questionnaire which was used to generate data from a sample size of 275 respondents comprising of 265 rural women who are involved in small-scale traditional method of palm kernel oil extraction from Takum, Ussa, Bali and Kurmi Local Government Areas of Taraba State and 10 Agricultural Extension Agents who are serving in the aforementioned Local Government Areas. The instrument was administered on the respondents in their localities by the researchers and eight (8) research assistants. 210 copies of the instrument were successfully filled and returned. Findings of the study revealed that provision of processing facilities and adequate storage facilities are some of the strategies for enhanced commercial processing of palm kernel oil. On the basis of the above findings, it was recommended that extension agents should expose rural women to the strategies that could enhance commercial processing of palm kernel oil.
Do Firm Vary The Frequency Of Advertising In An Offline And Online Environment? An Analytical Approach,

There have been countless developments in the field of communication and information. Marketers have been quick to capitalise on these advancements. In this regard, the interactive advertising has slowly been gaining prominence globally, and many companies now have online presence enabling them to gain recognition not only locally but also globally. This study has been an attempt at analysing the variations in the frequency of both the online and the offline medium of advertising, through the analysis of the companies’ reports of two brands- Camden food co and The Pasty Shop. It was discovered that the common perception that exists is that online web-sites are expensive to maintain after initial implementation. The method of advertising is chiefly dependent on the marketing policy of a firm, which is actually a product of the nature of the firm itself. Hence, since both Camden Food Co and The Pasty Shop cater to people who are commuting and have a bite on the go, the key advertising strategy has been to invest in and maintain offline advertising.
Day and Night Returns for Chinese Stocks

Compared to US stocks, Chinese stocks earn most of the returns during the day. We extend previous findings by Qiao and Dam (2020) arguing that the absence of day trading in the Chinese stock markets explains these differences and argue that these differences reflect an illiquidity premium. We estimate difference-in-differences regressions comparing affected Chinese A-class stocks to unaffected Chinese B-class stocks and propensity-score matched Japanese stocks two years pre and post the day trading ban in 1995. We find an increase in day returns (especially, for previously liquid stocks), a decrease in night returns, and unchanged 24-hour returns. Using data from 1999 to 2014, we rule out risk-based explanations and we show that Chinese stock returns exhibit momentum during the night. Overall, these findings help explain how illiquidity and day trading affects stock prices.