Miracle-dz/UniFAR-FTUs huggingface dataset:
Effects of Asymmetric Gas Distribution on the Instability of a Plane Power-Law Liquid Jet

As a kind of non-Newtonian fluid with special rheological features, the study of the breakup of power-law liquid jets has drawn more interest due to its extensive engineering applications. This paper investigated the effect of gas media confinement and asymmetry on the instability of power-law plane jets by linear instability analysis. The gas asymmetric conditions mainly result from unequal gas media thickness and aerodynamic forces on both sides of a liquid jet. The results show a limited gas space will strengthen the interaction between gas and liquid and destabilize the power-law liquid jet. Power-law fluid is easier to disintegrate into droplets in asymmetric gas medium than that in the symmetric case. The aerodynamic asymmetry destabilizes para-sinuous mode, whereas stabilizes para-varicose mode. For a large Weber number, the aerodynamic asymmetry plays a more significant role on jet instability compared with boundary asymmetry. The para-sinuous mode is always responsible for the jet breakup in the asymmetric gas media. With a larger gas density or higher liquid velocity, the aerodynamic asymmetry could dramatically promote liquid disintegration. Finally, the influence of two asymmetry distributions on the unstable range was analyzed and the critical curves were obtained to distinguish unstable regimes and stable regimes.
Robust Stability Analysis of Synchronverters Operating in Parallel

Recent studies have shown how synchronization units of converters operating nearby may interact with each other, affecting the stability of the system. Synchronverters are able to self-synchronize to the grid without the need of a dedicated unit because they can reproduce the power synchronization mechanism of synchronous machines. Recently, the robust stability of a synchronverter has been investigated by means of structured singular values (commonly called <inline-formula><tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>-analysis). In this paper, <inline-formula><tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>-analysis is performed to investigate how the robust stability of a synchronverter is affected by the presence of another converter of the same type operating in parallel. It is demonstrated that the parallel operation of synchronverters reduces their robust stability and a possible solution is proposed, based on the implementation of virtual impedances in the control algorithm. An accurate state-space model of the system under study is developed by adopting the component connection method and the robust stability analysis is validated against time-domain simulations in MATLAB/Simulink/PLECS and experimental results with a power-hardware-in-the-loop test bench.
Estudar e trabalhar: percepções de técnicos de enfermagem sobre esta escolha

Pesquisa descritiva, de abordagem qualitativa, realizada com academicos de enfermagem de uma universidade comunitaria do Rio Grande do Sul/Brasil, no segundo semestre de 2009. Teve como objetivo identificar percepcoes de tecnicos de enfermagem que vivenciam a experiencia de trabalhar em um turno e estudar em outro. Os dados foram coletados por meio de um questionario e analisados pela metodologia de analise tematica, resultando em quatro categorias: Concepcoes e percepcoes acerca da qualidade de vida; Situacoes que promovem qualidade de vida; Dificuldades encontradas durante o periodo academico; Motivacoes a realidade de trabalhar e estudar. Embora com dupla jornada de atividades, para a maioria dos sujeitos e satisfatoria sua qualidade de vida. O sono e a fadiga foram citados como as principais limitacoes para a dupla atividade plena. Discutir modos e meios de facilitar a conciliacao trabalho e estudo e uma estrategia que pode agregar valor ao processo de formacao destes sujeitos.
Stress no trabalho do enfermeiro

Este estudo avaliou o stress associado ao trabalho do enfermeiro no trabalho com o portador de transtorno mental inserido no contexto do hospital psiquiatrico. Trata-se de pesquisa quantitativa, analitica, realizada em sete hospitais psiquiatricos da cidade de Fortaleza, Ceara. Utilizou-se os seguintes instrumentos: dados sociodemograficos para descricao da amostra e um inventario para identificar os sintomas de stress no enfermeiro. A populacao total abrangeu 48 participantes e a amostra 42, a maioria do sexo feminino, o que corresponde a 92,9% do total. Os resultados mostram que em 62% da amostra nao apresentaram stress, 30,9% encontravam-se na fase de Resistencia e apenas 7,1% na fase de Exaustao. Nao houve associacao estatisticamente significativa entre a variavel tempo de trabalho com o portador de transtorno mental e sintomas de stress. Portanto, o presente estudo nao evidenciou a ocorrencia do stress nesses profissionais enfermeiros.
Kaplan-Meier estimators of distance distributions for spatial point processes

When a spatial point process is observed through a bounded window, edge effects hamper the estimation of characteristics such as the empty space function F, the nearest neighbor distance distribution G and the reduced second-order moment function K. Here we propose and study product-limit type estimators of F, G and K based on the analogy with censored survival data: the distance from a fixed point to the nearest point of the process is right-censored by its distance to the boundary of the window. The resulting estimators have a ratio-unbiasedness property that is standard in spatial statistics. We show that the empty space function F of any stationary point process is absolutely continuous, and so is the product-limit estimator of F. The estimators are strongly consistent when there are independent replications or when the sampling window becomes large. We sketch a CLT for independent replications within a fixed observation window and asymptotic theory for independent replications of sparse Poisson processes. In simulations the new estimators are generally more efficient than the border method estimator but (for estimators of K), somewhat less efficient than sophisticated edge corrections.
A Unified Approach to Maximum Power Point Tracking and I-V Curve Determination of Photovoltaic Arrays from Real-time Measurements

In recent years we have seen a considerable increase in the installed capacity of Photovoltaic (PV) power generating plants worldwide. This increase is primarily attributed to the decrease in the cost of installation and the awareness towards the sustainable power generation. However, the efficiency of the PV modules is still low. The Current vs. Voltage (I-V) characteristics of the PV generators is non-linear and changes with irradiance and temperature. For optimal utilization of PV sources, Maximum Power Point Trackers (MPPTs) are used. When the array is under uniform illumination, there is a single peak on the Power vs. Voltage (P-V) curve of the PV array. This peak is easily tracked by conventional MPPTs. However, under Partial Shading Conditions (PSC), multiple peaks appear on the P-V curve. Out of these, there is one Global Peak (GP) while the others are Local Peaks (LP). When the MPPT algorithm is trapped at LP, considerable power loss occurs. Special MPPTs are designed for finding the GP when the array is under PSC. It is also important to periodically find the I-V curve of the array under the field conditions for monitoring and control of the PV generators. For this purpose, specialized tests are performed. During these tests, the generation of power from the PV arrays is halted. Similarly, the speed of performance of these tests is also important as the environmental conditions may change quickly during finding of the curve. Any change in the surroundings during the performance of finding the characteristic curve may affect the results. In this thesis, two algorithms are proposed that perform the MPP tracking and measurement of the I-V curve under any kind of irradiance. The first algorithm performs these tasks by using the module voltages as the parameter. In the second method, the input filter capacitor of buck or buck-boost converter is used. Simulation and experimental results confirm the performance of the proposed methods.
The protozoa occurring in the hind-gut of cockroaches. I. Responses to changes in environment

Records of non-sporozoan Protozoa occurring in the hind-gut of cockroaches are summarized. The Protozoa studied were the three flagellates Lophomonas striata, L. blattarum, Monocercomonoides orthopterorum; the rhizopod Endamoeba blattae, and the ciliate Nyctotherus ovalis, in the cockroaches Periplaneta americana, P. australasiae, Blatta orientalis, Blattella germanica and Blaberus giganteus. Specimens of Blatta and Periplaneta americana were maintained at 37° and 25°C. under extreme conditions of humidity. Maximum humidity enabled the host, and the Nyctotherus which it harboured to survive for a longer time. The results of the experiments indicated that the well-being of the protozoan parasites is closely linked to that of the host. Periplaneta americana, Blatta, Blatella and Blaberus were subjected to pure oxygen at 3½ atmospheres pressure and the effect on the Protozoa observed. The flagellates were killed first, then Endamoeba and lastly Nyctotherus. They survived in Blatta for a longer time than in Periplaneta; and Nyctotherus in Blaberus and Blattella sometimes survived the hosts. The hosts appeared to act as a barrier against poisoning by oxygen, and the strength of the barrier varied in the different species of cockroaches. Nymphal Periplaneta or Blatta which were about to moult underwent a period of self-starvation which lasted for up to 10 days. The period was terminated by the moult: at this time, the little food that was in the gut was very dry. All species of Protozoa could survive these conditions, but Nyctotherus seemed to be the most hardy. The main mass of ciliates seemed to be nearer to the anus than in the non-moulting cockroach. Many of the ciliates were often clumped together into a ‘raspberry’. The bodies of the individual ciliates were more spherical than usual, but those in the ‘raspberry’ were moulded into polygonal shapes. The macronucleus underwent a change in form which revealed that its basic structure is that of a folded sheet. The changes were reversed within 24 hr. They could not be induced by experimentally imposed conditions of starvation or dehydration of the hind-gut. The changes in Nyctotherus ovalis are contrasted with the sexual stages occurring in N. cordiformis and in the Protozoa of Cryptocercus. This work was done during the tenure of a Research Studentship awarded by the Agricultural Research Council. I am deeply indebted to Dr P. Tate for his encouragement and counsel at all stages of the work. I wish to thank Drs J. Barker and E. R. Turner, of the Cambridge University Botany School, for the loan of the apparatus used in subjecting cockroaches to oxygen under pressure, and Mr A. C. Bloy, of the Zoology Department, for gifts of cockroaches. I am most grateful to Mrs E. F. M. Hawkins and Mr B. H. Baker for technical assistance.
Effects of Spatial Elements of Urban Landscape Forests on the Restoration Potential and Preference of Adolescents

: City green space can promote people’s health and aesthetic satisfaction; however, most extant research focuses on suburban forests and urban parks. Urban landscape forests have important ecological and aesthetic value for urban environments. This study conducted a visual stimulation to examine the impact of four common spatial element combinations in urban landscape forests on teenagers’ recovery potential and preference. The results indicate that urban landscape forests had positive physiological and psychological effects on adolescents, including decreased blood pressure, improved heart rate, reduced anxiety, and improved recovery ability. Diastolic blood pressure relief performance was better among males than females. In addition, a stepwise linear regression analysis was performed to explore the quantitative relationship between spatial elements and recovery and preference values. The results demonstrate that water elements were a signiﬁcant predictor in the quantitative relationship between spatial elements in landscape forests and restoration and preference values. Terrain, ﬂower, and shrub elements did not have a signiﬁcant effect on overall restoration and preference values. This study highlights the intervention value of urban landscape forests in promoting the health and well-being of adolescents, with implications for future planning and design of urban landscape forests.
Macroeconomic dynamics and inﬂation regimes in the U.S. Results from threshold vector autoregressions

This paper studies regime dependence in macroeconomic dynamics in the U.S. using a threshold vector autoregressive model in which endogenous regime switches are triggered by the inﬂation rate. The model separates a high from a low inﬂation regime with both regimes being strongly persistent. Generalized impulse response functions highlight important across-regime diﬀerences in the responses of the economy to monetary policy and inﬂation shocks. Simulating both regimes with individual structural equations interchanged shows a change in inﬂation dynamics to be the most important source of the transition of the U.S. economy from the high into the low inﬂation state while the change in the monetary policy reaction functions has only very little eﬀect. Our results indicate that favorable changes in the economic structure and less frequent and smaller shocks are important explanations for the observed decline in U.S. macroeconomic volatility since the mid 1980s.
The objective and subjective aspects of career success

: This study aimed to obtain a deeper understanding of objective and subjective aspects of career success, by examining the impact of HRM practices (compensation, performance appraisal, training, and development) and career motivation on objective and subjective aspects of career success with a sample of 289 employees in the Jordanian banking sector. The results showed that objective and subjective aspects are important factors to form career success. Results also indicated that HRM practices (compensation and performance appraisal) and career motivation have a significant positive impact on the objective and subjective aspects of career success, and that career motivation partially mediated the relationship between HRM practices (compensation and performance appraisal) and career success. Academic researchers should pay attention to both the objective and subjective aspects of career success, since each aspect reflects an important and different part of career success. Future studies should explore other factors of organizational behaviour that may explain the objective and subjective aspects of career success.
Measuring the Measures: A Meta-Analytic Investigation of the Measures of Outgroup Homogeneity

We meta-analytically synthesized the intergroup variability literature (177 effect sizes, from 173 independent samples, and 12,078 participants) to test the potential moderating effect of 11 measures of perceived variability. Aggregating across the measures, we detected a small but reliable tendency to perceive more variability among ingroup than outgroup members and such outgroup homogeneity was stronger among non-minimal than minimal groups. Furthermore, analyses that distinguished among the 11 measures revealed systematic discrepancies among the patterns of perception detected by those measures. Those systematic discrepancies further varied across social contexts deﬁ ned by relative group status, with some measures yielding ingroup homogeneity and others outgroup homogeneity. We discuss the possibility that the measures of variability require different mental activities that interact with contextually induced cognitive and motivational processes to yield disparate intergroup perceptions.
Mergers and Acquisitions: Failures and causes, an evidence-based approach

: Merger and Acquisitions have been for long the most commonly used method of growth, diversification and many other corporate strategies. Along with that there has also been literary evidence that the M&A quite more than expected have been unsuccessful in attaining their primary goal or objectives and thus have been deemed as failures. This study tries to bring out firstly the actual failure rates as per evidence in research and then the reasons that have been cited as per various researches and put forth a comprehensive opinion in terms of both of these parameters to guide the future researches into solving these issues by highlighting its scale and also the crux of the actual problem that may have caused them. approach
Overload, Anxiety and Depression in Caregivers of Physically Dependent Patients

:- Dependency is the inability, loss or absence of a person to perform their activities and in turn depend on a caregiver to perform daily activities, a person with a disability is defined as one who has physical, mental or intellectual impairment in which their biological and psychological ability to perform essential activities in life is restricted. The increase of chronic diseases, people with physical and intellectual disabilities, age, have caused an increase of patients with dependency and require constant care, with this study was evaluated, support, education and accompaniment was given to caregivers to avoid stress and pressure states. Objective: To determine overload, anxiety and depression in caregivers of patients with physical dependence in the city of Cuenca. Methodology: Non-experimental, quantitative, descriptive, correlational-comparative and cross-sectional research, where 169 caregivers of patients with inclusion criteria of physical dependence in the canton of Cuenca, province of Azuay, were analyzed using the questionnaire of anxiety, depression and workload evaluated by the STAI / IDER and Zarit scales, where the individuals included in the study were evaluated. Results: Caregivers with a primary education level and caregivers who have been working as caregivers for a range of 21 to 30 years presented a slight overload; in general, all caregivers presented mild to high levels of anxiety, and depression was only present in caregivers who have been working as caregivers for a range of 31 to 39 years; it was also determined that there is a slight significant correlation between anxiety and overload; on the other hand, there was no significant relationship between depression and overload.
COVID- 19 OUTBREAK: THE IMPACT OF CITIZEN’S DEMOGRAPHIC ATTRIBUTES ON SATISFACTION WITH THE GOVERNMENT DURING MCO 1.0

All governments worldwide strive to achieve public satisfaction; nevertheless, this is a difficult task, as evidenced by the previous literature on citizen satisfaction, which including citizen expectations, experiences, past attitudes, and prior attitudes toward government. As a result, various administrative reform agendas have directly linked the need to reform public services to become more client-oriented to promote citizen satisfaction with public services to increase citizen satisfaction with public services (Van de Walle, 2018). The Malaysian government has implemented a comprehensive reform program throughout the last three decades, and it continues now. However, and in a contradictory manner, service delivery performance has continued to fall short of public expectations (Faiez & Rao, 2019). Failing public service delivery attracts the attention of the media, the scrutiny of political leaders, and the displeasure of the public (van den Bekerom et al., 2021). Fitch Solutions reported that the Covid-19 outbreak had increased political risks in Malaysia as more citizens become increasingly dissatisfied with the government's handling of the Covid-19, which will harm policymaking and policy continuity, as well as social stability, because of the pandemic (Mung, 2021, June 8). Previous researchers acknowledged that the level of citizen satisfaction was not thoroughly investigated throughout the crisis and that further research was required. As a result, the purpose of this paper is to investigate the relationship between citizen demographic characteristics and satisfaction during the first phase of the mobility control order during the Covid-19 epidemic.
Dissecting the Chloroplast Proteome of the Potato (Solanum Tuberosum L.) and Its Comparison with the Tuber Amyloplast Proteome

The chloroplast, the energy organelle unique to plants and green algae, performs many functions, including photosynthesis and biosynthesis of metabolites. However, as the most critical tuber crop worldwide, the chloroplast proteome of potato (Solanum tuberosum) has not been explored. Here, we use Percoll density gradient centrifugation to isolate intact chloroplasts from leaves of potato cultivar E3 and establish a reference proteome map of potato chloroplast by bottom-up proteomics. A total of 1834 non-redundant proteins were identified in the chloroplast proteome, including 51 proteins encoded by the chloroplast genome. Extensive sequence-based localization prediction revealed over 62% of proteins to be chloroplast resident by at least one algorithm. Sixteen proteins were selected to evaluate the prediction result by transient fluorescence assay, which confirmed that 14 were distributed in distinct internal compartments of the chloroplast. In addition, we identified 136 phosphorylation sites in 61 proteins encoded by chloroplast proteome. Furthermore, we reconstruct the snapshots along starch metabolic pathways in the two different types of plastids by a comparative analysis between chloroplast and previously reported amyloplast proteomes. Altogether, our results establish a comprehensive proteome map with post-translationally modified sites of potato chloroplast, which would provide the theoretical principle for the research of the photosynthesis pathway and starch metabolism.
Estimating Smallholder Farmers’ Willingness to Pay for Sustainable Irrigation Water Use in North Western Ethiopia: A ContingentValuationMethodStudy

Ethiopia is the water tower of sub-Saharan Africa countries with 12 major river basins and 22 natural and arti cial lakes, which make a median of 1,557.5m of water available per person per year. is study speci cally was aimed to estimate smallholder farmers’ willingness to pay for sustainable irrigation water use in northwestern Ethiopia using double-bounded dichotomous choice with a follow-up of open-ended contingent valuation questions. For this study, as a source of quantitative data, a total of 288 households were selected through a systematic random sampling method. Additionally, qualitative and secondary data were collected from the focus group discussions and desk reviews, respectively. A seemingly unrelated bivariate probit model and descriptive statistics were used to estimate households’ mean and aggregate willingness to pay. e result of the study revealed that about 283 (98.26%) households were willing to pay for sustainable irrigation water use via constructing water storage, allocation, and distribution channels. Moreover, the result from seemingly unrelated bivariate probit model regression results from doublebounded dichotomous choice questions, mean, and aggregate willingness to pay were 950.7 ETB (€25.7) and 1,087,159.09 ETB (€29,382.7) per month and per year, respectively. On the other hand, the mean and aggregate willingness to pay from the openended questions were 926.059 ETB (€25.03) and 1,072,990.52 ETB (€28,999.74) per month and year per household, respectively. erefore, the study suggested for the concerned body to introduce proper irrigation water pricing systems based on households’ willingness and ability to pay. And an estimate of willingness to pay provides an indication of the demand for introducing proper irrigation water use system leading to sustainable use system.