Miracle-dz/UniFAR-FTUs huggingface dataset:
Evaluation of customized cobalt-chromium abutments fabricated with different manufacturing process versus titanium stock abutments on the marginal misfit -An in vitro study

Aim: Accurate fit of the abutment to the implant is required for the uniform load distribution throughout the assembly. The study aims to compare the marginal misfit of titanium stock abutments with the cobalt-chromium (CoCr) customized abutments fabricated with the different manufacturing processes in internal hex implant-abutment connection using an appropriate scanning technique. Setting and Design: In vitro comparative study. Materials and Methods: A total of 40 abutments were included in the study. Ten titanium stock abutments were used as control (Group CN) and 30 CoCr abutments were fabricated and taken as the test group. Stock abutments were scanned and from obtained images test group abutments were fabricated as follows: Ten cast abutments (Group CA), 10 sintered abutments (Group SA), and 10 milled abutments (Group MA). Endosseous implanst having internal hex connections were matched with 10 stock abutments and 30 customized CoCr abutments. Implants were mounted in a clear epoxy resin block and the abutments were then fitted onto the implants with a torque of 30Ncm. The marginal discrepancy at implant-abutment connections was measured with confocal laser scanning microscope. Statistical Analysis Used: One-way ANOVA and Tukey's post hoc test was done for statistical analysis. Results: One-way ANOVA revealed a significant difference in marginal misfit of abutments. The mean marginal misfit was lowest for stock abutments (0.35 ± 0.009 μm). Among the customized abutments, the mean marginal misfit was highest for cast abutments (2.44 ± 0.445 μm) followed by sintered abutments (1.67 ± 0.232 μm) and least for milled abutments (0.65 ± 0.041 μm). A significant difference was found in marginal misfit with cast abutments and sintered abutments when compared to stock abutments (P < 0.001). The difference in marginal misfit was insignificant between stock abutments and milled abutments (P = 0.052). Conclusion: Difference in marginal misfit exists between the titanium stock abutments and customized CoCr abutments. Among the customized abutments, milled CoCr abutments have the least marginal discrepancy and cast CoCr abutments have a maximum marginal discrepancy. Milled CoCr abutments can be used as an alternative to titanium stock abutments.
Head-up displays assist helicopter pilots landing in degraded visual environments

ABSTRACT Civilian rotary-wing aircraft pilots typically rely on visual information from the external environment to guide flight, but are increasingly required to operate in degraded visual environments. The current study evaluated the impact of a head-up display (HUD) upon pilot performance, perceived situation awareness and workload. A 2 × 2 repeated measures design required qualified rotary-wing pilots (N = 6) to fly in clear and degraded visual conditions both with and without the HUD. In degraded visual conditions, the HUD significantly improved pilot perceived situation awareness whilst simultaneously reducing workload. Objective flight technical performance data offered preliminary support for a positive change in pilot behaviour when using the HUD in degraded visual conditions.
Requirements for applying governance and accounting conservatism to strengthen financial flexibility In Egyptian and Palestinian sports institutions

This research aims to identify the requirements for applying governance and accounting conservatism to support financial flexibility in Egyptian and Palestinian sports institutions. The sample was chosen randomly The research tools included a governance and accounting conservatism questionnaire to strengthen financial flexibility, and data was collected by applying the questionnaire, and the data collected was classified, tabulated and statistically analyzed, and appropriate statistical methods were followed through the Spss program, and this research followed the descriptive analytical approach. In order to reach the most important results of the research, which confirm that the calculated (Ka2) value is greater than the tabular (9.49), for all the phrases related to the governance and accounting conservatism questionnaire to support financial flexibility, as the calculated (Ka2) value ranged between (10.062: 52.375), which shows that there are differences It is statistically significant in all phrases, and the estimated percentage of axes phrases is high, which indicates the importance of the phrases of the governance questionnaire and accounting conservatism to support financial flexibility, and the necessity of sports clubs’ interest in clarifying the concept of accounting conservatism, and attention to developing mechanisms of governance and accounting conservatism for sports institutions. The current research recommended the need to pay great attention to research on governance and accounting conservatism in the sports field, and the need for proper application of them, and the issuance of legislation that includes penalties for cases of manipulation that occur in the financial statements of sports institutions, and encouraging the state to hold conferences on the concept of governance and conservatism in sports institutions.
Self-Supervised Learning with Attention-based Latent Signal Augmentation for Sleep Staging with Limited Labeled Data

Sleep staging is an important task that enables sleep quality assessment and disorder diagnosis. Due to dependency on manually labeled data, many researches have turned from supervised approaches to self-supervised learning (SSL) for sleep staging. While existing SSL methods have made significant progress in terms of its comparable performance to supervised methods, there are still some limitations. Contrastive learning could potentially lead to false negative pair assignments in sleep signal data. Moreover, existing data augmentation techniques directly modify the original signal data, making it likely to lose important information. To mitigate these issues, we propose Self-Supervised Learning with Attention-aided Positive Pairs (SSLAPP). Instead of the contrastive learning, SSLAPP carefully draws high-quality positive pairs and exploits them in representation learning. Here, we propose attention-based latent signal augmentation, which plays a key role by capturing important features without losing valuable signal information. Experimental results show that our proposed method achieves state-of-the-art performance in sleep stage classification with limited labeled data. The code is available at: https://github.com/DILAB-HYU/SSLAPP
The Need Analysis of Maritime English Learning Materials for Nautical Students of Maritime Academy in Indonesia Based on STCW’2010 Curriculum

This study was aimed to investigate the Maritime English learning materials needed by the students of nautical department of Maritime Academy in Indonesia based in STCW’2010 curriculum. The participants of the research were the seafarers, the port authorities, the shipping business employees, the English lecturers, and the cadets of Maritime Academy. They were totally about 48 participants. They were selected by using purposive random sampling technique. There were three types of instruments for collecting data those were questionaire, documentary sheet, and interview. The results of the study shows that 1) there were three basic leaning materials categories of Maritime English namely a) the nautical contents, b) language skills, and c) languistic features and 2) the level of needs of those materials were different from categories to another categories and within categories.
Predictive values of first trimester ultrasound screening for twin-to-twin transfusion syndrome and selective intrauterine growth restriction in monochorionic twin pregnancies

Background : Monochorionic diamniotic (MCDA) twins have a substantially higher risk for perinatal morbidity and mortality due to the presence of placental vascular anastomoses between the twins. Objectives: The primary purpose of this research was to confirm the accuracy of first trimester ultrasonography in predicting selective intrauterine growth restriction (SIGR) and twin-to-twin transfusion syndrome (TTTS) in monochorionic twin pregnancies using the triad of nuchal translucency (NT), cord insertion and inter-twin discordance in foetal size. Patients and methods: This was a prospective cohort study that included 31 pregnant women who were carrying monochorionic twins during the first trimester. The research was carried out at a foetal medicine unite, Obstetrics and Gynecology Department, South Valley University Hospital. The duration of the study ranged from 18 to 24 months. Results : the mean difference in NT can determine TTTS with fair sensitivity (73.2%) and high specificity (100%) in twins (p<0.001). Likewise, mean difference in CRL can determine TTTS with fair sensitivity (73.1%) and high specificity (100%) in twins (p<0.001). The mean difference in NT can determine sIUGR with high sensitivity (100%) and fair specificity (73.2%) in twins (p<0.001). Likewise, mean difference in CRL can determine sIUGR with high sensitivity (100%) and fair specificity (73.1%) in twins (p<0.001). Conclusion : we have demonstrated that NT and CRL were significantly higher in TTTS group, and NT and CRL were respectively identified as the predictive markers for sIUGR and TTTS.
A tunable nonlinear vibration energy harvester based on a magnetically-sprung resonator using ring magnets

This paper presents a novel design of a magnetically-sprung mechanical resonator for electromagnetic vibration energy harvesting. The proposed resonator consists of a plastic cylinder, a moving magnet encapsulated in the cylinder, and two fixed ring magnets fitted on the cylinder suspending the moving magnet between them. The magnetic poles of the ring magnets are arranged so that the face opposed to the moving magnet has the opposite polarity. Thanks to this arrangement, the ring magnet attracts the moving magnet when it is far, but repels it when it comes close. This means that a single ring magnet can stably hold the moving magnet at its equilibrium, and the magnetic force between them is highly nonlinear. As a result, the overall restoring force-displacement relationship shows variety of nonlinear characteristics, from high-stiffness monostability to low-stiffness essential nonlinearity and even bistability, depending on the distance between the ring magnets. Simplified and detailed mathematical models of the proposed magnetic spring are presented to understand the dependence of the force-displacement characteristics on the design parameters. The numerical model of a prototype harvester is investigated to demonstrate the tunability of the resonance frequency by adjusting the axial position of the ring magnets.
Effect of Mobile-Based Video Learning on Clinical Nursing Students Learning Outcomes

Background: Mobile device is a valuable form of technology that can be used with video clips in nursing education to promote nursing students' learning motivation and confidence in learning a clinical nursing skill. Aim of study: Was to evaluate the effect of mobile-based video learning on clinical nursing students learning outcomes. Research design: Quasi experimental design was conducted to achieve the aim of this study. Setting: The present study was conducted at Medical Surgical Nursing department skill lab - Faculty of Nursing-Benha University. Subject: A purposive sample of 150 of the second year nursing students at the academic year 2020-2021, Faculty of nursing, Benha University. Tools of data collection : (1) Self-Reporting Questionnaire (SRQ) Part I: Students’ Demographic Characteristics. Part II: Students’ Class Satisfaction Measuring questionnaire. Part III: Instructional Materials Motivation Survey (IMMS). (2) Nursing Students’ competency skills observational checklist. Results: There was a significant improvement of students' motivation, satisfaction and their competency skills concerning initiating IV access and administrating IV infusion procedures among the study group subjects on 2 nd and 4 th week at follow up of implementing mobile based video learning program compared with control group subjects on the traditional method of learning with a high statistical significant difference P= 0.000, there were a positive correlation post implementing mobile based video learning between students’ satisfaction, motivation and their skill competency. Conclusion: There was a positive effect of implementing mobile based video learning on students' satisfaction, motivation and their skill competency among the study group. Recommendations: Provide adequate training programs to students on using mobile application in education. Provision of mobile courses wherever possible in nursing education.
Understanding the multiple functions of construction contracts: the anatomy of FIDIC model contracts

Abstract Construction contracts, such as FIDIC model contracts, are relatively complex and cumbersome, and their composition needs to be better understood. This research uses a multi-functional approach that is widely recognized in the contract literature, and anatomizes FIDIC model contracts in order to gain a holistic and comprehensive understanding of them. Moreover, this research comparatively analyses the distribution of the three functions, namely control, coordination and adaptation, in four forms of FIDIC model contracts to explore how project delivery systems (PDSs) affect contract design. After a classification framework that includes three functions and ten subclasses was established, the FIDIC 1999 series model contracts were coded sentence by sentence using content analysis. The results show that the three functions are all non-trivially reflected in construction contracts and are influenced by project complexity. Regarding different PDSs, the complexity of contract control is relatively rigid; the complexity of contract coordination is largely influenced by PDSs; and the impact of PDSs on the complexity of adaptation provisions depends on the sub-class. The conclusions may help scholars and practitioners understand construction contracts from a functional perspective, and offer references for contract designers to reasonably consider the distribution of the three functions in construction contracts.
A critical analysis of research of a mass-housing programme

ABSTRACT A recent expansion of mass-housing programmes has occurred in emerging economies. The analysis of research on programmes raises questions about what type of research is produced and what its impact is on housing. The Brazilian ‘My House, My Life’ (Minha Casa, Minha Vida – MCMV) programme demonstrates that more of the same type of housing is produced and that the focus of most research repeats the same mistakes. Three million homes have been built and the research community has examined the programme’s social, economic and environmental impacts. A total of 2477 scientific studies on MCMV are analyzed. Few studies were found to assess living conditions from a user perspective at the residential unit scale. Although improvements have occurred on some social issues, the siting of housing on the urban periphery is problematic for urban mobility, social segregation and aesthetic monotony. Also, the design model does not respond to the diverse needs of inhabitants. Opportunities are identified for actions and essential missing research on mass housing. Retrofit strategies are urgent and social cost studies should induce change to the design model. Evidence-based research is needed to support policies and design processes for affordable and quality housing solutions that value users, their needs and aspirations.
Effect of electrodes material on transient currents in dielectric liquid

In this study, results of polarisation and depolarisation currents measured on an insulating liquid are presented. The goal is to contribute to a better understanding of mechanisms occurring at the metal-liquid contact. Electrodes of different metallic nature are associated with the same mineral oil, the metal / liquid / metal structure is submitted to DC voltages and the transient current is recorded with a high sensitive electrometer. The current versus time feature shows that the conduction process is in good compliance with the metal work function rather than with its electric conductivity. The current versus field characteristics indicate a predominance of the ohmic behaviour for the low fields. The space charge limited conduction regime appears as soon as the electrical constraint exceeds ~1 MV/m, which corresponds to 10% of the breakdown voltage. Schottky injection is suspected to occur from the metal into the liquid since the applied fields are uniform and non-extremely intensified.
Wetland position in the landscape: Impact on water storage and flood buffering

On‐going climatic changes and land‐use changes may impact water storage dynamics within wetlandscapes (defined as the entire hydrological catchments of interconnected wetland systems). These dynamics are closely linked to many wetland ecosystem services including flood buffering, nutrient retention and biodiversity support. Here, we investigate if and how current water storage dynamics can differ between wetlands within the same wetlandscape. Based on continuous monitoring of water levels in multiple wetlands throughout a growing season (spring, summer, autumn) in Vattholma, Sweden, we show that there are two distinct storage behaviours depending on the position of the wetland within the landscape. Headwater wetland regions were active in temporary storage of surplus water from regular summer rains while water levels of downstream wetlands dropped to seasonal low values without responding to individual summer precipitation events. Thereby, the downstream wetlands maintained capacity to buffer extreme floods. We also found that headwater wetlands were associated with complex and patchy inundation, which causes habitat conditions to vary over short time scales both within and among these wetlands, in contrast to the prolonged low‐water state of the downstream wetlands. These differences between headwater‐downstream wetlands imply that the functionality of an entire wetlandscape cannot be assessed by simple extrapolation of data from monitoring stations that typically are located downstream of headwater regions. Increased understanding of these differences can support wetland management practices that target location‐specific nature‐based solutions and ecosystem services.
Exploratory Analysis of Mobility of Care in Montreal, Canada

“Mobility of care” refers to the daily travel required to complete care labor such as travel to the grocery store, or to escort children. Though past research has examined the distribution of individual types of household-serving travel, little research to date, especially in the North American context, has examined mobility of care which combines all travel required to fulfill a household’s care needs. This paper presents the results of an exploratory analysis of mobility of care drawing on the 2018 Montreal Origin–Destination Survey. Specifically, this paper explores who completes this type of travel and how this mobility is completed. Findings indicate that mobility of care comprises 28% of adults’ daily mobility. Further, women are found to complete more of this type of travel than men, especially women from lower-income households. The presence of children in the household further widens this gendered gap, though the number of children present does not alter this trend greatly. Mobility of care trips are shorter on average than other types of travel and are frequently completed as part of a trip-chain. Further, car use and walking are more frequently used for mobility of care than other types of travel, while the opposite is true for public transport and cycling. The use of public transport for mobility of care trips is greater amongst women than men, especially those living in lower-income households. Taken together, results highlight the importance for practitioners to explicitly address mobility of care in transport planning, and particularly in public transport planning.
Influence of measurement grid resolution on duct loss evaluation

The present paper deals with the influence of the measurement grid resolution, used for positioning five-hole-probes, on the evaluation of the aerodynamic flow field in a newly designed one-and-a-half stage test turbine. In particular, five-hole-probe data taken under engine realistic conditions downstream of the high pressure rotor at the inlet and outlet of an intermediate turbine duct is used to generate the corresponding flow fields with various measurement grid resolutions. The effect of reducing circumferential and radial grid points is discussed in terms of total pressure loss and total measurement time. In addition, the effect of extrapolating the radial total pressure distribution to the static pressures at the endwalls is demonstrated. Consequently, this paper provides estimates of the error generated by a low measurement grid resolution and proposes a time-efficient adaptive measurement grid which accurately captures the flow field without jeopardizing the quality of the obtained data.
CORRELATION ANALYSIS BETWEEN FACTORS INFLUENCING THE USAGE INTENTION OF NFC MOBILE WALLET PAYMENT

The dramatic increase in the development of mobile technologies and the rising expansion of smartphones usage have results with vital opportunities for innovative corporations to develop new payment systems that offer consumers with value-added services. Near Field Communication (NFC) mobile payment system is becoming one of the highly noticeable phenomenons that is capable of turning users’ smartphones into digital wallets. Even though a lot of research has been conducted to address the consumers’ adoption of mobile payment, there are only few researches that have touched the user’s adoption of NFC mobile wallet from the human and security perspectives. The aim of this study is to analyze the factors influencing the consumers’ adoption of mobile payment. The study proposed a model that defines the dimensions of perceived security for NFC mobile payment to build understanding on how to improve the adoption rate of the technology. The model conceptualized two main dimensions containing eight independent factors namely, Perceived Ease of Use, Perceived Usefulness, Ubiquity, Awareness, Perceived Risk, Structural Assurance, Security and Privacy, and Trust. The study conducts a survey questionnaire that involves 209 valid respondents to evaluate the proposed conceptual model. Finally, the result of the correlation analysis shows that all the independent variables (Perceived Ease of Use, Perceived Usefulness, Ubiquity, Awareness, Perceived Risk, Structural Assurance, Security and Privacy, and Trust) have significant influence on the dependent variable (Intention to Adopt NFC Mobile Wallet Payment). Keywords: NFC; Mobile Wallet; Technology Adoption; Human and Security Perspective