Miracle-dz/UniFAR-FTUs huggingface dataset:
Modelling and design of an autonomous sailboat for ocean observation

This study presents various aspects of the development of an autonomous sailboat for ocean observation, with specific focus on modelling and simulation. The potential value of such platforms for ocean observation is well established, with there being a number of expected advantages over existing solutions. A comprehensive literature review is presented, revealing that the modelling of sailboats is an existing field but that the modelling of small autonomous platforms appears to have been limited. This study develops three and four degree of freedom models of a small autonomous J-Class style sailboat. The sailboat is a prototype platform which is developed from its existing state as part of the study. Both models are validated against data logged during field tests, showing broad agreement with some limitations being noted. Results of simulations of the models are used to draw a number of conclusions regarding the appropriate design of the platform’s wing-sail, the wing-sail’s control requirements in different wind conditions, potential modifications of the platform’s design, and the control of its heading while sailing. Results are also used to inform the proposal of a novel ‘variable draft sailing spar’ as an alternative autonomous sailboat design.
Naturalistic observations of metacognition in engineering: Using observational methods to study metacognitive engagement in engineering

The use of metacognition is critical to learning, especially in fields such as engineering that involve problem‐solving and difficult conceptual material. Due to limitations with current methodological approaches, new methods are needed to investigate engineering students' metacognitive engagement in learning situations that are self‐directed, such as study groups.
A Statistical Study of Cutaneous Malignant Tumors (1996 ${\sim}$ 2000)

Background : The incidence and clinical characteristics of cutaneous premalignant lesions and malignant tumors in Korea varied according to different authors probably due to social and environmental influences, and the reported time. Objective : The purpose of our study was to analyze the recent changes in cutaneous premalignant lesions and malignant tumors, and to compare them with other data previously reported. Methods : Clinical data and histopathological reports of 93 cases of cutaneous premalignant lesions and 238 cases of cutaneous malignant tumors out of new outpatients that visited the Department of Dermatology at the Seoul National University Hospital during a 5 year period(19962000). Results : 1. The average annual incidence of cutaneous premalignant lesions was 0.40% and that of cutaneous malignant tumors was 1.02%. 2. Among the premalignant lesions, actinic keratosis(67.7%) was the most common, and then Bowen's disease(31.2%). The incidence of Bowen’s disease tended to increase compared to previous reports. 3. The most common malignant tumor was basal cell carcinoma(22.2%), followed by malignant melanoma(19.7%), lymphoma(18.1%), squamous cell carcinoma(12.6%), metastatic cancer(12.6%). The incidence of malignant melanoma was increased compared to previous reports. 4. Among the 53 cases of basal cell carcinoma, 49 cases(92.5%) were ulceronodular type. The most common predirection site was the nose(30.2%). 5. Among the 43 cases of lymphoma, 38 cases(88.4%) were peripheral T-cell and NK-cell lymphoma, 4 cases(9.3%) were B-cell lymphoma. Among the peripheral T-cell and NK-cell lymphoma, mycosis fungoides was the most common(30.2%).
2017 U.S. Air Force Community Feedback Tool: Key Results Report for Air Force Headquarters

Airmen, their families, and Air Force civilian employees face a range of personal and work-related challenges. To assist Air Force leaders and service providers in identifying the needs of their communities and prioritizing efforts to address them, the Air Force sponsored the 2017 Air Force Community Feedback Tool—a self-reported needs assessment of Air Force community members. This report synthesizes results and draws lessons from the findings.
The use of social media for work-related knowledge sharing by construction professionals

ABSTRACT Use of social media for work-related knowledge sharing (KS) by professionals has become widespread globally. The extent, nature and patterns of this use have been little explored to date in the construction industry. This paper aims to investigate the frequency, nature and determinants of social media use for KS among the construction professionals. The objectives are to measure the current level of use of the three major social media platforms by the construction professionals for KS; and to empirically validate an extended version of the Unified Theory of Acceptance and Use of Technology (UTAUT) that identifies the impact factors of adoption of social media for work-related KS by the construction professionals. Survey data were collected from 120 construction professionals in Australia and were analysed using Structural Equation Modelling (SEM) techniques. Findings show that Facebook and LinkedIn were used by almost half of the survey respondents. Passive KS was the most common type of KS activity. Performance Expectancy (PE), and Knowledge Sharing Self-Efficacy (KSSE) had positive impacts on the construction professionals’ intention to use (IU) social media. IU and Facilitating Conditions (FC) had positive direct impacts on the use of social media for work-related KS. The findings shed light into the potential ways of improving social media use for KS by the construction professionals.
Critical Factors Influencing the Adoption of Smart Home Energy Technology in China: A Guangdong Province Case Study

Smart home energy technology has been verified to be successful for energy reduction in the residential sector. However, the current penetration rate of smart home energy technology is at a low level. Considering the factors of economy, policy, and demographics, Guangdong Province in China is a suitable region as an exemplary case to promote smart home energy technology through the urban residents. Therefore, using Guangdong as the targeting area, this research examined the factors influencing residents’ intention to adopt smart home energy technology. A theoretical model based on the theory of planned behavior and Norm Activation Model theory was developed, with special consideration of the complex technical features. A questionnaire survey was performed in Guangdong Province and the data was analyzed by PLS-SEM. The analysis results indicated that residents’ attitude towards technical performance, social norm, perceived behavioral control, and personal norm all have positive influence on the adoption intention, of which, attitude towards technical performance had the strongest effect. On the other hand, the attitude towards economic performance was found not to lead adoption intention. To explain this consequence, the discussion based on behavioral economics was proposed.
The Design of an Automated System for the Analysis of the Activity and Emotional Patterns of Dogs with Wearable Sensors Using Machine Learning

The safety and welfare of companion animals such as dogs has become a large challenge in the last few years. To assess the well-being of a dog, it is very important for human beings to understand the activity pattern of the dog, and its emotional behavior. A wearable, sensor-based system is suitable for such ends, as it will be able to monitor the dogs in real-time. However, the question remains unanswered as to what kind of data should be used to detect the activity patterns and emotional patterns, as does another: what should be the location of the sensors for the collection of data and how should we automate the system? Yet these questions remain unanswered, because to date, there is no such system that can address the above-mentioned concerns. The main purpose of this study was (1) to develop a system that can detect the activities and emotions based on the accelerometer and gyroscope signals and (2) to automate the system with robust machine learning techniques for implementing it for real-time situations. Therefore, we propose a system which is based on the data collected from 10 dogs, including nine breeds of various sizes and ages, and both genders. We used machine learning classification techniques for automating the detection and evaluation process. The ground truth fetched for the evaluation process was carried out by taking video recording data in frame per second and the wearable sensors data were collected in parallel with the video recordings. Evaluation of the system was performed using an ANN (artificial neural network), random forest, SVM (support vector machine), KNN (k nearest neighbors), and a naïve Bayes classifier. The robustness of our system was evaluated by taking independent training and validation sets. We achieved an accuracy of 96.58% while detecting the activity and 92.87% while detecting emotional behavior, respectively. This system will help the owners of dogs to track their behavior and emotions in real-life situations for various breeds in different scenarios.
HUMAER: A Test-Bed Environment for Human Factors Investigations in the Aeronautic Domain

This work presents the Human Factors in Aeronautics laboratory (HUMAER), from the Aeronautics Institute of Technology (ITA). This laboratory is a test-bed environment built around the SIVOR – the flight simulator with a robotic motion platform from ITA – with the purpose of evaluating the different relations among the pilot cognitive, psychological and physiological states and the aircraft’s human-computer interfaces and cybernetics. The lab is comprised of different virtual reality technology and non-intrusive physiologic sensor technology that can be installed on the pilot to monitor its psycho-cognitive state from a range of objective measures. Considering some characteristics of SIVOR’s cockpit, like the motioncueing ability and the haptics stimuli generated from the force-feedback inceptors and shakers, some of the main prospective research lines to be explored by the ITA’s team are presented according to the key technologies made available at HUMAER. To exemplify some of the current research made within the lab, some findings on pilot perception and workload evaluation from previous referenced investigations are reported.
Quantifying the benefit of structural health monitoring: can the value of information be negative?

Abstract The benefit of Structural Health Monitoring (SHM) can be properly quantified using the concept of Value of Information (VoI), which is, applied to an SHM case, the difference between the utilities of operating the structure with and without the monitoring system. The aim of this contribution is to demonstrate that, in a decision-making process where two different individuals are involved in the decision chain, i.e. the owner and the manager of the structure, the VoI can be negative. Indeed, even if the two decision makers are both rational and exposed to the same background information, their optimal actions can diverge after the installation of the monitoring system due to their different appetite for risk: this scenario could generate a negative VoI, which corresponds exactly to the amount of money the owner is willing to pay to prevent the manager using the monitoring system. In this paper, starting from a literature review about how to quantify the VoI, a mathematical formulation is proposed which allows one to assess when and under which specific conditions, e.g. appropriate combination of prior information and utility functions, the VoI becomes negative. Moreover, to illustrate how this framework works, a hypothetical VoI is evaluated for the Streicker Bridge, a pedestrian bridge on the Princeton University campus equipped with a fiber optic sensing system: the results show how the predominant factor that determines a negative VoI is the different risk appetite of the two decision makers, owner and manager.
Time‐dependent material properties and reinforced beams behavior of two alkali‐activated types of concrete

This paper presents an experimental study on the development of material properties over time (up to around 2 years) and the structural behavior of reinforced beams, for two types of alkali‐activated concrete (AAC). Compressive strength, flexural strength, tensile splitting strength, elastic modulus, and flexural behavior of reinforced beams are investigated. Tested material properties of AAC are compared with the properties of conventional concrete, as predicted by Eurocode. For the mixes of AAC and the conventional concretes with the same 28 days compressive strength, flexural and tensile splitting strength at 28 days are found to be similar, whereas the elastic moduli of AAC mixtures is up to 30% lower than those of conventional concrete. Related to the long term behavior, after 28 days moist‐curing and subsequently exposing AAC specimens to laboratory conditions (50% RH/20°C), a reduction of flexural strength, tensile splitting strength and elastic modulus, is observed. Structural behavior of the reinforced AAC beams in four‐point bending test seems not to be affected significantly by the observed decrease in material properties, and is found to be similar to that of conventional concrete beams. The acquired results indicate that the observed decrease of material properties over time might be related to drying (moisture loss). However, more research is needed to understand the phenomenon, especially related to the aimed structural application and safe upscaling of AAC.
Assessment of pedestrians’ travel experience at the religious city of Puri using structural equation modelling

ABSTRACT Puri, one of the most sacred sites for Hindus in India, is visited by millions of tourists every year. This paper evaluates the travel experience of pedestrians in Puri. A total of 500 respondents were asked to rate different microscale factors on a five-point Likert scale (1 = very poor and 5 = very good). Received data were analysed using structural equation modelling, which formed four latent constructs such as accessibility, safety, comfort and aesthetics. The results show that pedestrians in Puri are most dissatisfied with the factors related to the comfort construct, followed by accessibility, safety and aesthetics, respectively.
Strategic portfolio of IT projects at universities: A systematic and non-conventional literature review

One of the most accepted review methods in the scientific community is the Systematic Literature Review (SLR). A SLR process allows determining the interest of the scientific community in the subject matter of the preliminary research, the type of research and the areas of knowledge to which the topic is more related, among other aspects. For our research, we need to determine the scientific basis of the portfolio of information technology (IT) project, as initial good practice for the implementation of an IT governance culture. Universities have been specifically selected as the type of organization in the communities that have developed formal processes and good practices for the implementation of IT governance. In addition to the SLR, a review was carried out based on non-conventional literature from repositories of prestigious professional organizations and universities. It is concluded that the portfolio of IT projects is a good practice of IT governance and that there is an interest from the scientific community. From this analysis, it is clear that there are works in both the area of Computer Science and the Administration of Organizations.
Hyperhomocysteinemia, pregnancy complications, and the timing of investigation

OBJECTIVE: To assess associations between vitamin-dependent homocysteine me ta bolism and vascular-related pregnancy complications by considering interval bet ween delivery and postpartam investigation and maternal age. METHODS: Casecontro l study performed at the University Medical Center Nijmegen in the Netherlands. Patients had experienced pregnancy-induced hypertension (n = 37), preeclampsia (n = 144), hemolysis, elevated liver enzymes, low platelets (HELLP) syndrome (n = 104), recurrent early pregnancy loss (n = 544), abruptio placentae (n = 135), intrauterine growth restriction (n = 144), or intrauterine fetal death (n = 104) . Controls comprised 176 women with uncomplicated obstetric histories. Oral meth ionine loading tests and fasting vitamin profiles were performed more than 6 wee ks after delivery. Odds ratios and 95%confidence intervals were calculated afte r logistic regression analysis. RESULTS: Hyperhomocysteinemia was associated wit h an approximately 2-fold to 3-fold increased risk for pregnancy-induced hype rtension, abruptio placentae, and intrauterine growth restriction. Cobalamin def iciency was associated with HELLP syndrome, abruptio placentae, intrauterine gro wth restriction, and intrauterine fetal death. Pyridoxal 5phosphate deficiency i ncreased the risk for pregnancy-induced hypertension 4-fold. These association s lost their significance after adjustment for time interval and maternal age. H igh red cell folate was associated with a decreased risk for abruptio placentae and intrauterine growth restriction. An increased creatinine concentration was a ssociated with pregnancy-induced hypertension, preeclampsia, HELLP syndrome, an d abruptio placentae. CONCLUSION: Hyperhomocysteinemia and vitamin deficiencies are largely determined by the interval between delivery and postpartum investiga tion and by maternal age. Time interval and maternal age should be considered in the risk estimation for vascular-related pregnancy complications.
On the Secondary Control Architectures of AC Microgrids: An Overview

Communication infrastructure (CI) in microgrids (MGs) allows for the application of different control architectures for the secondary control (SC) layer. The use of new SC architectures involving CI is motivated by the need to increase MG resilience and handle the intermittent nature of distributed generation units. The structure of SC is classified into three main categories, including centralized SC (CSC) with a CI, distributed SC (DISC) generally with a low-data-rate CI, and decentralized SC (DESC) with communication-free infrastructure. To meet the MGs’ operational constraints and optimize performance, control and communication must be utilized simultaneously in different control layers. In this survey, we review and classify all types of SC policies from CI-based methods to communication-free policies, including CSC, averaging-based DISC, consensus-based DISC methods, containment pinning consensus, event-triggered DISC, washout-filter-based DESC, and state-estimation-based DESC. Each structure is scrutinized from the viewpoint of the relevant literature. Challenges such as clock drifts, cyber-security threats, and the advantage of event-triggered approaches are presented. Fully decentralized approaches based on state-estimation and observation methods are also addressed. Although these approaches eliminate the need of any CI for the voltage and frequency restoration, during black start process or other functionalities related to the tertiary layer, a CI is required. Power hardware-in-the-loop experimental tests are carried out to compare the merits and applicability of different SC structures.
Effects of Shuttlecock on Postmenopausal Women' Bone Mineral Density and Metabolism

Objective:To investigate the effects of shuttlecock on postmenopausal women's lower extremity BMD and bone metabolism markers.Methods:60 postmenopausal women were divided into 3 groups,namely,shuttlecock group(one year),shuttlecock group(half a year) and control group.The sports pattern was shuttlecock playing.The researchers tested the lower extremity BMD、BGP、Ca、IL-6 before and after training.Results: The contents of BMD and BGP of shuttlecock group were higher significantly than those of control group,and the contents of serum IL-6 and TRAP were lower than those of control group.The effect of shuttlecock group(one year) was most obvious.Conclusion: Long-term shuttlecock playing can enhance postmenopausal women's BMD and improve the bone metabolism markers.
Survey on KAP and impact factors of condom use among construction workers in Shanghai,China

Objective To understand the level of knowledge,attitude and practice (KAP) related to condom use and relevant impact factors among construction workers in Shanghai so as to provide evidence base for further promotion of condom use.Methods A face-to-face questionnaire survey was conducted among 1871 construction workers who were randomly selected from 18 sites in three districts of Shanghai.The collected information included demography,working experience,living conditions,KAP related condom use,etc.Results Most of the surveyed construction workers were married and male.Average age was 39±10.4 years;80.8% of them only had primary or junior middle schooling or even below.The scores of knowledge and attitude related to condom use were very low.The proportion of consistent condom use with casual sex partners was significantly higher than that with regular sex partners (53.3% vs 10.6%;P0.001). The factors related with lower frequency of condom use included older age,cohabitation,married/remarried status and long daily working time,their OR values being 0.57,0.22,0.46 and 0.71,respectively.Conclusion Construction workers play a bridge role of transmitting HIV/STI from the high risk population to the general population because they are highly floating and sexually active,with insufficient condom use knowledge and less frequency of condom use,etc.Therefore,strong promotion of condom use should be conducted among this special population group.
Academic use and attitude of the 1st year medical students toward smartphones in a North Indian city

Objective: Smartphones have evolved from luxury to essential need items in general population nowadays. iOS by Apple, Android by Google, Windows by Microsoft and Blackberry account for the majority of smartphone operating system which are currently in use today. Materials and Methods: The present study was done among 350 students of medical, dental, nursing and physiotherapy streams to know the prevalence of smartphone use and attitude towards its use. Of the 350 students enrolled in the study, 257 completed the questionnaire with a response rate of 73.4%. Results: Out of 222, 198 had android devices, 13 had iPhones, and 11 had other operating systems including Windows and Blackberry. 191 (74.3%) of the subjects had a working email account. Conclusion: First year students have positive perception towards smartphone use and medical schools should encourage the use of medical applications among them. However, students and medical professionals should be cautious of the negative issues with smartphone use.