Miracle-dz/UniFAR-FTUs huggingface dataset:
Ignition sensitivity study of Partially Premixed Combustion by using shadowgraphy and OH* chemiluminescence methods

Partially Premixed Combustion (PPC) is a promising combustion concept for future IC engines. However, controllability of PPC is still a challenge and needs more investigation. The scope of the present study is to investigate the ignition sensitivity of PPC to the injection timing at different injection pressures. To better understand this, high-speed shadowgraphy is used to visualize fuel injection and evaporation at different Start of Injections (SOI). Spray penetration and injection targeting are derived from shadowgraphy movies. OH∗ chemiluminescence is used to comprehensively study the stratification level of combustion which is helpful for interpretation of ignition sensitivity behavior. Shadowgraphy results confirm that SOI strongly affects the spray penetration and evaporation of fuel. However, spray penetration and ignition sensitivity are barely affected by the injection pressure. There is a critical SOI range, in which a significant amount of fuel is trapped in the crevice volume. Injection in this critical range has a negative influence on the combustion efficiency and ignition sensitivity. Impingement of liquid fuel on the piston crown advances the combustion phasing by providing higher levels of stratification. Moreover, results of combustion stratification study show that stratification level has an inverse correlation with combustion phasing of PPC for late injections. (Less)
Creating e-Clusters: A New Challenge for Supply Chain Management

The radical changes that are affecting world economy have highlighted new structures and ways of competing for firms and networks of firms. A possible and robust way to increase a firm’s competitiveness and cope with globalisation challenges is to implement and act as firm clusters. The term cluster traditionally refers to an industrial model that bases its advantage on local proximity of the members. However, members of a cluster can be sometimes located worldwide, but linked through information and communication technologies (ICTs). Therefore, in this kind of context, the term e-cluster is used. This research aims to study the process that leads to the creation of an e-cluster. Two case studies of companies designing and implementing an e-clustering process are analysed through an action research approach. The e-clustering creation process includes three main steps: context analysis, the e-clustering operation, and assessment of results. The paper also analyses what the enablers are that foster the e-clustering process and their roles in the different steps of the process.
Antecedents of IFRS Compliance: The Moderating Effect of Audit Quality

Despite the significant non-compliance with IFRS, most audit reports provide unqualified opinion which brings into question the audit quality in enforcing IFRS compliance. Therefore, the purpose of the study was to examine the antecedents of compliance with IFRS by focusing on the moderating effect of audit quality on the association of firm characteristics and IFRS compliance. The collection of data was done through quantitative content analysis of annual reports of 20 Zambian listed companies and Zambia Institute of chartered Accountants covering the years 2012 to 2018. Being a longitudinal study requiring panel data analysis, a Hausman test was done to choose the model to employ. The Hausman test showed that the random effect model was suitable. Results indicate that audit quality moderates the association of firm characteristics and IFRS compliance. Also, there was a positive association between firm size and compliance with IFRS. There was a negative association between firm profitability and compliance with IFRS. However, there was a statistically insignificant positive association between foreign investors, institutional investors, audit quality and IFRS compliance. The study suggests that large companies are expected to comply more with IFRSs and profitable firms withhold financial information. Audit quality was not impaired probably due to the size of the audit firms and international affiliation. Meanwhile, the influence of institutional investors and foreign investors on IFRS compliance was insignificant probably because both institutional and foreign investors in Zambian listed companies are transient investors without significant incentives to demand financial disclosures and they may have other means to access financial information. The financial reporting regulators should focus on enhancing audit quality for listed companies in Zambia and even in other African countries. Future research can focus on the relevance of IFRS disclosures to the domestic investors in Africa considering the cultural differences both at firm and national-level.
Karma Belief and Green Product Purchase Intention: Two Mediating Factors of Environmental Awareness and Global Warming Belief

Green marketing has established as an important topic among scholars and practitioners due to its importance in supporting a better world people are living in. The karma doctrine posits that all decisions and behaviors result in consequences. This belief is widely embraced globally as shown by previous research. Despite the importance of karma belief in daily life, research on the role of karma in consumers’ decision, in particular green marketing context is relatively rare. The purpose of this study is to investigate whether belief in karma can increase the intention to purchase green products. In order to achieve the study’s goal, data from 188 adult respondents were collected in this study. The respondents were reached by the convenience sampling method. Using a quantitative method, this study investigates the existence and type of relationship between constructs; thus, the analytical tool used is Structural Equation Modeling (SEM). This study found that the relationship between karma belief and green product purchase intention is mediated by two constructs, namely, environmental awareness and global warming belief. Theoretical and practical contributions are discussed.
‘I do it for the kids’: understanding the implications of being a volunteer coach in a community youth sport club in New Brunswick, Canada

ABSTRACT Community sport organizations provide youth with opportunities to engage in organized sport through the dedication of volunteers. One group important to the implementation of programs are coaches. Therefore, the purpose of this research was to explore the sacrifices of a volunteer coach at the recreational, competitive, and high-performance level in New Brunswick (NB), Canada. Interviews were the main source of data collection. This research draws on serious leisure literature to gain an understanding of the sacrifices of being a volunteer coach. The findings revealed that volunteer coaches’ sacrificial factors included time sacrifice, coach education, travel, hotel and food expenses, and missed opportunities for career earnings. Based on the findings, it is suggested that sacrifices often become inherent volunteering norms that are taken for granted, where there are no other options if the sport organizations want to ensure the programs are administered.
Academic Papers Personal and non-personal references used by South Korean men in apparel purchase decisions

is Professor and Department Chairman of Textile and Apparel Management at University of Missouri-Colu mbia, is author of Textiles and Apparel in the Global Economy, co-author of Inside the Fashion Business, and has published extensively in academic and trade journals. She is Fellow and past president in the International Textile and Apparel Association (ITTA), was named ITAA-Boobin 'Educator of the Year' and among Textile World's 'Top Ten Leaders'. She serves on the Board of a Fortune 500 apparel firm.
An Overview Of Self-Control In Adolescent With Nomophobia (No Mobile Phone Phobia)

Introduction: Self control is important to control the use of smartphones to suit their needs. Low self control is one of the factors that cause nomophobia in smartphone users. The purpose of this study was to gain an understanding of the self-control of adolescents with nomophobia.Method: This study used a qualitative design with a phenomenological descriptive method through in-depth interviews. There were 15 participants with nomophobia, selected using purposive sampling technique. Data were analyzed using Colaizzi analysis. Results: This study identified 12 themes. Self-control of adolescents with nomophobia is influenced by the use of smartphones which raises the theme of reasons for using smartphones, conditions that cause smartphone use, the use of smartphones in life, and various features used on smartphones. Low self control causes adolescent to have difficulty controlling the stimulus to always use a smartphone and trigger nomophobia which is described through the theme of the response of nomophobia, the aspect of nomophobia, and the impact of nomophobia. After experiencing nomophobia, adolescents do self-control to control the impact of smartphone use which raises the theme of self-control efforts, parental control, and the aspects of self-control. Adolescent self-control is influenced by sources and barriers that raise the theme of the sources of self- control and the barriers of self-control.Conclusions: Adolescents with nomophobia have low self-control in using smartphones and controlling self-responses when there is no smartphone. Therefore, adolescent self-awareness and the role of parents are needed to increase self-control to prevent nomophobia and the negative impact of excessive smartphone use.
SVM-RBF model PCA criterion selection for detection of NS1 molecule from Raman spectra of salivary mixture

Detection of non-structural protein 1 (NS1) in saliva is a recent finding that is appealing to early non-invasive reporting of NS1 related diseases. It is free from risk of blood infection, an advantage over current detection methods which are mostly serum based. Our approach starts with the acquisition of SERS spectra of saliva and saliva adulterated with low concentration NS1. Each spectrum contains 1801 Raman shift per spot while each sample is impinged with laser 738nm source at 10 spots. A total of 128 spectra are analyzed. Due to this volume of SERS features, dimension reduction is applied prior to classification by a SVM-RBF classifier. Our work here intends to optimize the classifier model with respect to the different PCA criteria. Results show that Scree and CPV criteria makes better classifier model than EOC, for identifying NS1 fingerprint from salivary SERS spectra, through capturing of the most relevant features. In terms of cumulative percentage variance of the dataset, CPV criterion which retains 70 principal components with 90% of cumulative variance is considered the most suitable for the model with a performance of [95.35% 100% 98.41%]. In terms of number of principal components and the associated computational load and time, the best SVM-RBF model is found with Cattel's Scree test criterion, which has a performance of [99.24% 100% 96.97%] with 5 principal components and 34.41% of cumulative variance.
Improved MPPT Algorithm for Controlling a PV System Grid Connected for Rapid Changes of Irradiance

Single-phase grid connected inverter is one of the inverter types widely used in photovoltaic generation systems (PVGS) because of the benefits it offers. Effective control of PVGS, is given by MPP block, to track the maximum power point (MPPT) of PV modules in order to maximize the power delivered to the grid. However, the electrical voltage supplied by a solar panel depends on climatic conditions and especially irradiation. This paper proposes an improved algorithm of MPP method P&O, widely used thanks to the advantages it presents when there is a uniform insolation. Our improvement is to overcome the P&O limit when there is a rapid change in radiation: generating a reference voltage erroneous (Vref) by MPP block for the DC bus control of inverter. The principle of the algorithm proposed in this work is to make a measurement of periodically Vpv (voltage PV) and Ipv (current PV) to half the interval of the sampling period MPPT. Although this technique requires more computation, it gives accurate results with virtually zero error. The effectiveness of our approach is verified by simulation in Matlab/Simulink for a 1.5Kw inverter connected to the grid.
The Case against Horizontal Takeoff Launch Vehicles

This paper presents the results of numerous space launch vehicle studies which include both horizontal and vertical launch systems. It was found that horizontal launch vehicles faired poorly when compared with vertical launch systems in almost all measures of performance. Measures of performance included gross weight, empty weight, wetted area, cost, risk, maintenance, and turn time. Ever effort was made to fairly evaluate all designs with consistent methodology. The reasons for the horizontal launch vehicles’ poor showing are explained and quantified.
Advance of research on vibration - based structural health monitoring in civil engineering

Evaluation of civil engineering structures' health has become a concerned problem and a key research issue to civil engineers. The necessity and the urgency to implement structural health monitoring in civil engineering are introduced. The structural health monitoring systems must be applied specific. The process of vibration - based structural health monitoring is presented. On the basis of reviewing the researches on vibration - based structural health monitoring, several key issues related to the structural health monitoring, such as optimal sensor placement and damage identification, are focused on. Finally this paper points out future studies and application efforts in these aspects.
Four-Node Quadrilateral Shell Element MITC4

Four-node quadrilateral element MITC4 applicable to both thick and thin shells is presented. The element formulation starts from three-dimensional continuum description degenerated to shell behavior. Shear locking, which is common problem in analysis of thin shells, is overcome by the use of MITC (Mixed Interpolation of Tensorial Components) approach. Element has been implemented into finite element code OOFEM and its performance is demonstrated on Scordelis-Lo shell, a benchmark problem frequently used in the evaluation of shell elements.
Psychometric properties of the Problem Gambling Severity Index Among Older Adults

ABSTRACT The nine-item Problem Gambling Severity Index (PGSI) is a self-report measure of problem gambling severity used in empirical and prevalence studies. This study examined the psychometric properties of the PGSI among older adult samples (60+ years), which have not yet been evaluated in the literature. Age equivalence of measures originally developed for use among general adult samples cannot be assumed; thus, such instruments should be evaluated to ensure appropriate use of such measures. Data were derived from the Leisure, Lifestyle, and Lifecycle Project and Quinte Longitudinal Study. Results of exploratory and confirmatory factor analyses supported a single-factor structure. Factor invariance between genders was identified. Internal consistency was considered good for the overall sample (α = .86). Concurrent validity between monthly overall gambling frequency and game types (EGMs, bingo, and instant win tickets) were supported for both continuous PGSI total score and categorical PGSI. In sum, the PGSI total score accurately reflects the construct of problem gambling among older adults.
Children and Young People’s Experiences of Mental Health Services in Healthcare Settings: An Integrated Review

ABSTRACT Mental health (MH) issues can affect all children and young people (CYP), and can form a long-term negative impact on their life prospects if left unchecked. It is of utmost importance that CYP’s voices are heard and that they are involved in decision-making and care planning. CYP aged 4–17 years old have provided an invaluable insight into their experiences of mental health services within healthcare settings. This review undertaken as part of a Masters in Advanced Professional Practice explores the CYP’s views and experiences within primary, secondary, and tertiary mental health services. Consequently, the betterment of mental health services for all CYP is sought.
Sustainable Food Consumption of German Millennials: Exploring the "Attitude Behavior Gap"

This thesis picked up on the recent trend of sustainability and sustainable development by investigating the sustainable food consumption of German Millennials regarding an assumed gap between their attitude and their actual consumer behavior. Based on the Theory of Planned Behavior, a multi-step, qualitative research process was developed in order to find explanations for the attitude behavior gap. The process triangulated data from questioning ten German Millennial consumers via qualitative interviews, observing these consumers during a regular grocery shopping trip and analyzing the products they bought. The study revealed the following barriers preventing the participants from consuming according to their attitude: price, lack of knowledge on part of the consumers, insufficient sustainable product ranges, consumers minimizing the time spent for grocery shopping, habitualized purchase decisions and in exceptional cases a desire for unsustainable products. Accordingly, recommendations were derived for sustainable food manufacturers and supermarket chains, public policy and consumers. Additionally, this thesis contributes to consumer research on the attitude behavior gap as well as on behavioral research by applying and extending the Theory of Planned Behavior. Keywords: Sustainable consumption; attitude behavior gap; consumer behavior; food consumption Verbal Protocol Analysis;Theory of Planned Behavior.
Classi�cation of Painful or Painless Diabetic Peripheral Neuropathy and Identi�cation of the Most Powerful Predictors Using Machine Learning Models in Large Cross-Sectional Cohorts

Background: To improve the treatment of painful Diabetic Peripheral Neuropathy (DPN) and associated co-morbidities, a better understanding of the pathophysiology and risk factors for painful DPN is required. Using harmonised cohorts (N = 1230) we have built models that classify painful versus painless DPN. Methods: The Random Forest, Adaptive Regression Splines and Naive Bayes machine learning models were trained for classifying painful/painless DPN. Their performance was estimated using cross-validation in large cross-sectional cohorts (N = 935). Models were externally validated in a large population-based cohort (N = 295) in the presence of missing values. Variables were ranked for importance using model speci�c metrics and marginal effects of predictors were aggregated and assessed at the global level. Model selection was carried out using the Mathews Correlation Coe�cient (MCC) and model performance was quanti�ed in the validation set using MCC, the area under the precision/recall curve (AUPRC) and accuracy. Results: Random Forest (MCC=0.28, AUPRC = 0.76) and Adaptive Regression Splines (MCC = 0.29, AUPRC = 0.77) were the best performing models and showed the smallest reduction in performance between the training and validation dataset
The concretization of the term sustainable spa- tial development for the assessment of child and juvenile awareness

The following article is targeted at the comprehensive co-shaping of the conditions required for the active education on the effective and concrete contributions to sustainable development, with the emphasis based on the built environment or architecture. It defines the role of education on the built environment or architecture within the concept of sustainable development, determines the grounds for adjusting the methods of delivering architectural contents and defines the educational contents along with their presentations with regards to the developmental abilities of the public, which is targeted. It presents the deliberation on objectifying the term sustainable spatial development, for the assessment of child and juvenile awareness of “sustainable architecture” topics as well as determining childcare workers and teachers adequate qualifications to provide the knowledge in the field of the built environment, in relation to sustainable environment. Concretisation signifies the selection and visualisation of actual topical occurrences in physical space for a specific targeted public (the article provides representative models). It also contributes to the development of “cultural” dimension of spatial development sustainability. The efforts made to strive towards the lifelong learning of architecture and its influence on our everyday lives and our future.
Ultrastructural characterization of host–parasite interactions of Plasmodium coatneyi in rhesus macaques

Abstract Abstract Plasmodium coatneyi has been proposed as an animal model for human Plasmodium falciparum malaria as it appears to replicate many aspects of pathogenesis and clinical symptomology. As part of the ongoing evaluation of the rhesus macaque model of severe malaria, a detailed ultrastructural analysis of the interaction between the parasite and both the host erythrocytes and the microvasculature was undertaken. Tissue (brain, heart and kidney) from splenectomized rhesus macaques and blood from spleen-intact animals infected with P. coatneyi were examined by electron microscopy. In all three tissues, similar interactions (sequestration) between infected red blood cells (iRBC) and blood vessels were observed with evidence of rosette and auto-agglutinate formation. The iRBCs possessed caveolae similar to P. vivax and knob-like structures similar to P. falciparum. However, the knobs often appeared incompletely formed in the splenectomized animals in contrast to the intact knobs exhibited by spleen intact animals. Plasmodium coatneyi infection in the monkey replicates many of the ultrastructural features particularly associated with P. falciparum in humans and as such supports its use as a suitable animal model. However, the possible effect on host–parasite interactions and the pathogenesis of disease due to the use of splenectomized animals needs to be taken into consideration.
Clinical Presentation of Retinoblastoma in Ethiopia: A Case of Jimma University Medical Center Pediatric Oncology Unit, Southwest Ethiopia

Background Retinoblastoma (RB) is one of the most curable childhood cancers if early detected and treated. Late presentation complicates the management of RB results in dismal treatment outcome. Objective: The aim of this study is to report the clinical presentation pattern of retinoblastoma patients seen at Jimma University Medical center (JUMC). Methods The study was a retrospective review of retinoblastoma cases managed at JUMC between August 2016 and July 2020. Results Among pediatric oncology cases registered retinoblastoma, accounting 8.5 % (36/423) of all childhood cancer patients in the study period, 29 (90.6%) of them had unilateral retinoblastoma and 3(9.4%) of them had bilateral retinoblastoma. The average age at presentation for bilateral and unilateral retinoblastoma patients was 17 (range 3–30) months and 37.5 months (range 8–84) respectively. The first symptom observed by the family was leukocoria in 21 (65.6%) of the patients but 24(75%) of the patients presented with advanced stage (proptosis and fungating orbital mass) of the disease. The longest and the shortest lag time of presentation from the first symptom was 17 months and 2 weeks respectively with the mean lag time of 1.4 months in bilateral and 6 months in unilateral cases. Clinically, the majority of the eyes 24/35(68.6%) were extraocular tumors involving orbital tissues at presentation. Conclusion Most of retinoblastoma patients presented at advanced stage of the disease and presented very late after the family observed the disease. Early detection strategies must be designed by the government and responsible stakeholders in mitigating the effects of late presentation.