Miracle-dz/UniFAR-FTUs huggingface dataset:
APPLICATION DEVELOPMENT FOR MUSIC RECOMMENDATION SYSTEM USING DEEP DETERMINISTIC POLICY GRADIENT

Recommendation Systems works as an information filtering system which helps to feed and recommend content personalized for the taste of the user. From the use in e-commerce to generic advertisement, recommender systems are proven to be highly effective and go-to solution for personalized content promotion. This project aims to develop and design a Machine Learning model which can be integrated into an Android application to help recommend music for the app user. For this purpose, a Deep Deterministic Policy Gradient model was used along with an underlying architecture for designing the android application which contains playlist of the user’s songs and considering the likes and dislikes from the user, the app with the help of the ML model helps suggest user an additional array of songs.
Shape and topology optimization in fluids using a phase field approach and an application in structural optimization

We consider the problem of shape and topology optimization in fluid mechanics with a general objective functional. A phase field approach is introduced and discussed in terms of well-posedness and first order necessary optimality conditions. The state constraints are either given by the Stokes or the stationary Navier-Stokes equations. We find that minimizers of the diffuse interface setting have a converging subsequence as the interface thickness tends to zero. If this sequence fulfills a certain convergence rate or the total potential power is minimized in a Stokes flow, we obtain that the limit element is a minimizer of the sharp interface formulation. Additionally, we can derive in both, the Stokes and stationary Navier-Stokes setting, optimality conditions of the sharp interface model which can be verified to be the limit of corresponding optimality systems of the phase field model. Finally, we also apply this approach to structural optimization, where we want to find the optimal material distribution of two given elastic materials for a general objective functional. Using the techniques developed before, we can derive convergence results of a phase field approach similar to the fluid mechanical setting and discuss both the diffuse and the sharp interface formulation with regard to well-posedness and necessary optimality conditions.
Free software communities as an example of open communities and education networks

Over the past decade, scientific research has attempted to understand the success and the spread of communities that have been created and developed thanks to Internet technology. Education studies have also analysed the importance of these communities in spreading and sharing knowledge and educational culture has looked to these organizational forms for inspiration. At the same time, the link between these experiences and the development of pedagogical models emerging from cognitive sciences, systemic theory and the new forms of constructivism, which have generated a fruitful theory/practice circle, has been reinforced. The aim of this paper is to analyse the particular type of organizational, communicative and productive context of Open Communities: Free Software Communities, to understand how they work, their efficacy and to show their close link with dynamics and relations of an educational, formative and didactic type. Learning communities can still learn strategies of communication, organization and socialization from these communities, as well as the value of motivation and the importance of freedom and circulation of knowledge in order to build up efficient communities. We can also gain the understanding that the success of these communities depends on the fact that they are educational communities, therefore education studies can convey values, models and a culture of sharing to other sectors as well, such as the one taken into consideration: Free Software Communities. The study has been conducted with a research methodology of the phenomenological type thanks to a theoretical study and observation of different free software communities, visiting websites, chats, wiki pages, forums and other channels of discussion and collaboration.
Social Network Rumor Detection Method Combining Dual-Attention Mechanism With Graph Convolutional Network

Most rumor detection methods extract the features of rumor through two aspects of text semantics and propagation structure to achieve automatic rumor classification, while most of the existing methods do not realize that false and irrelevant interactions in the propagation structure will reduce the accuracy of rumor detection. In addition, most of the existing rumor detection methods failed to effectively extract key clues from the comments of social network users. In response to these phenomena, this article proposes a social network rumor detection method combining a dual attention mechanism and graph convolutional network (GCN) (dual-attention GCN, DA-GCN). First, build an event propagation graph; then, the GCN is used to extract the propagation structure information of each event-related microblog (tweet), and the attention mechanism is combined to suppress the false and irrelevant interactive relationships. Therefore, the anti-interference propagation structure features are extracted from the propagation graph. Second, to fully utilize the clues in users’ comments, this article makes use of the attention mechanism to fuse source microblog (tweet) with the comment–retweet information and extract interactive semantic features from it. Finally, the above two features are fused to generate a new event representation. Experimental results show that the proposed DA-GCN has an accuracy of 94.4%, 90.5%, and 90.2% on the Weibo dataset, the Twitter15 dataset, and the Twitter16 dataset, respectively, and has achieved excellent performance in the early rumor detection task, which proves that the proposed method is reasonable and effective.
Scientific Craftsmanship: The changing role of product designers in the digital era

Abstract In this paper, we provide a brief historical account that examines how technology and society influenced the design practice in 20th and 21st centuries. By focusing on the recent changes in the design profession, we discuss how digitalization changed the types of issues designers deal with, tools they use, and outcomes they produced. Based on these parameters, we propose scientific craftsmanship as a new definition of design activity in the digital age. This definition is concentrated on four major aspects: 1) working with physical and digital materials and tools, 2) fabricating in domestic scale, 3) using scientific methods and theories from other fields, and 4) creating with others.
Multi-objective sequential decision making

La presente these porte sur l'etude de prise de decisions sequentielles multi-Objectif (MOSDM). La motivation de ce travail est double. D'un cote, la prise de decision, par exemple, dans les domaines de robotique et de planification, concerne l'optimisation sequentielle. De l'autre cote, nombreuses applications dans le monde reel sont plus naturellement formules en termes d'optimisation multi-Objectif (MOO). La methode proposee dans la these adapte le cadre bien connue de recherche Monte-Carlo arborescente (MCTS) a l'optimisation multi-Objectif, dans lequel multiple sequences de decision optimales sont developpees dans un seul arbre de recherche. Le principal defi est de proposer une nouvelle recompense, capable de guider l'exploration de l'arbre bien que le probleme de MOO n'applique pas un ordre total entre les solutions. La contribution principale de cette these est de proposer et d'etudier experimentalement ces deux recompenses : l'indicateur de hypervolume et la recompense de dominance Pareto, qui sont inspirees de la litterature de MOO et bases sur une archive de solutions anterieures (archives Pareto). L'etude montre la complementarite de ces deux recompenses. L'indicateur de hypervolume souffre de sa complexite algorithmique. Cependant, cet indicateur fournit des informations a grains fins de la qualite des solutions a l'egard de l'archive actuelle. Bien au contraire, la complexite de la recompense de dominance Pareto est lineaire, mais cette recompense fournit des informations de plus en plus rare au long de la recherche. Les preuves de principe de l'approche sont donnes sur les problemes articiaux et les defis internationaux, et confirment la valeur de l'approche. En particulier, MOMCTS est capable de decouvrir les politiques se trouvant dans les regions non-Convexes du front Pareto, qui contraste avec l'etat de l'art: les algorithmes d'apprentissage par renforcement multi-Objectif existants sont bases sur scalarization lineaire et donc ne sont pas capables de explorer ces regions non-Convexes. Enfin, MOMCTS a fait honorablement la concurrence avec l'etat de l'art sur la competition internationale de MOPTSP 2013.
Literature Review of Segmentation and Classification of Medical Images

: The brain tumor segmentation is one of the highly focused regions in the community of medical science. Brain tumor segmentation has been employed to define the tumor area to help for disease diagnosis and select the best methods for the treatment of diseases. It is a tool to separate a portion of the tumor from the entire image. This paper presents a thorough literature review of recent techniques of brain tumor segmentation. Several techniques of image segmentation are briefly explained with the recent contribution of various researchers.
Verbalization of the Complex Concept Word/Language/Speech from Dual Linguistics Perspective

The verbalization of the concept WORD / LANGUAGE / SPEECH is a complex phenomenon is viewed from the point of view of a new humanitarian branch – dual linguistics, a combination of scientific and naive interpretation of language in the contemporary English lexicography. Language means verbalizing and explaining such interrelated notions as language, word, and speech, constitutes a mosaic-like unity of nominative units fixed in current lexicographic resources. It is proved that the interpretation of this particular phenomenon in the conceptual and linguistic pictures of the world of an average speaker and professional linguist is radically different. The dual linguistics perspective makes it possible to distinguish the two nominative fields of the studied concept: one for the naive and the other for the scientific pictures of the world. Factual data of the study that has been analyzed were drawn, respectively, on the one hand, from general (explanatory) and, on the other hand, special (linguistic) dictionaries of the English language. The primary task of this research is to describe the nuclear zone of the nominative field of the concept WORD/ LANGUAGE / SPEECH, which presupposes the naïve and scientific understanding of language through the prism of English lexicography.
Localización de fallas en sistemas eléctricos de distribución basados en la matriz de impedancia de barra

This paper proposes a method of locating faults in electrical distribution systems based on bar impedance matrix, short circuit theory and intelligent metering using smart metering. The proposed method consists in locating these metering systems in different bars along the distribution system in order to obtain effective voltage values in the pre-fault and fault state, these quantities when operating with the bar impedance matrix obtain the failure current estimated by each phase in each bar. These currents are used to obtain the fault localization coefficient, with which a comparative analysis is carried out, determining the coefficient of smaller value indicated by the estimated fault bar. The method has been studied in the primary principle of the IEEE of 34 bars, for all types of fault, with different values of failure resistance, presenting satisfactory results.
Feedback Loop Adaptation Speed Feedback Systems for PMSMs via Angle Filtering and Acceleration Stabilization Techniques

This article presents an advanced solution to the speed tracking problem of permanent magnet synchronous motors (PMSMs) subject to the following two practical concerns: uncertain motor parameter values, load variations, and current feedback dependence level. The results present a few contributions for industrial application: first, a parameter-independent angle filter (providing speed and acceleration estimates) by modifying the structure of the conventional extended state observer, second, the angle filter-based pole-zero cancellation acceleration stabilizer removing the $q$-axis current dependence of the speed loop to secure the current sensor fault tolerance, and third, the adaptive speed loop in the analytic form to improve the tracking performance by boosting feedback gain during only the transient periods. Using a dynamo testbed adopting a 700-W PMSM as the test motor, this experimental study verifies the effectiveness of the proposed technique under various operating modes.
Health Care Provision in State Institutions in the Context Of COVID-19

The main purpose of the research is to analyse the financial provision of health care in public institutions on the example of the State Emergency Service and to develop proposals for improving the medical system of the SES, taking into account the challenges of COVID-19. The paper presents the results of an empirical analysis of the amount of funding for health care facilities outside the structure of the Ministry of Health, on the example of the medical system of the State Emergency Service of the Ministry of Internal Affairs of Ukraine during 2017-2022. At a separate stage of the study, the volume and target of additional funding for health care from the Fund for Combating COVID-19 in 2020 were analysed. The analysis showed a lower level of remuneration of specialists and a worse financial situation of health care facilities subordinated to the Department of Medical and Biological Protection and Occupational Safety of the SES of Ukraine. In order to improve the health protection system of the SES, a number of proposals have been developed, namely: formation of a subdivision for analysis of problematic issues of the SES and legislative work to eliminate the identified shortcomings; digitalization and automation of reporting within the medical system of the SES of Ukraine; coverage of the activities of health care institutions of the SES in the media and social networks; advising and conducting licensing and accreditation of health care institutions of the SES; justification for increasing funding for the medical sector of the SES and increasing the salaries of medical workers; expanding the provision of paid services to the population; search for funding outside the budget of the SES within the national budget and outside the state budget from sources not prohibited by law, involvement of humanitarian and charitable organizations, patrons; maintaining and improving the level of qualification of medical staff, improving information and communication work with staff; conducting training and preparation of medical and support specialists for emergency response activities, conducting interdepartmental and local training with the involvement of specialists from local and international humanitarian organizations. The results of the study can be useful in the development of regulations and legislation in the field of medical care of the SES of Ukraine.
The Transition to Kindergarten for Children with and without Special Needs: Identification of Family Experiences and Involvement

The transition to kindergarten is one of the significant transition steps for children in early childhood. The family, being the closest circle of the child, supports the development of the child in the transition and affects the transition process with its resources and needs. In this regard, this study examined the experiences and participation of families of children with and without special needs in the transition to kindergarten. This study is a survey research in which family experiences and involvement in the transition to kindergarten are determined. The Family Experiences and Involvement in Transition questionnaire was used to assess family involvement in transition preparation activities and transition concerns during kindergarten entry. A total of 232 parents participated in the study. Research results show that both family groups are most concerned with are similar. The research identifies the situation that families are most concerned about as getting used to a new school. Whether they have a child with disabilities or not, the types of information that both family groups prefer were similar. In the transition process, families especially favoured meetings and visits as the types of family involvement. Upon discussing the findings in line with the relevant literature, this study makes suggestions for further research and applications.
Air pollution and climate change impact on forest ecosystems in Asian region – a review

ABSTRACT Forests are complex ecosystems comprising various trophic levels responsible for carrying out various biogeochemical processes and providing ecosystem services. However, forests in Asia are doubly challenged by climate change and air pollution. The rapidly changing air quality, with increasing concentration of greenhouse gases (GHGs), trace gases, volatile organic compounds (VOCs), and ozone (O3) also causes global warming leading to climate change, thus jointly creating a challenging condition for the forest ecosystem. The impact on forest ecosystems of the two anthropogenic stressors, viz., climate change and air pollution, requires global attention. These two stressors have been widely studied separately but their combined impact on the forest ecosystem has not been studied extensively, particularly in the Asian region. In this review article, we attempt to explore the importance of interlinking air pollution and climate change impact on Asian forests, by studying the decline of different forest types as a background and markers of forest ecosystem degradation. Our main aim is to understand and summarise the past and ongoing research in this area and to facilitate researchers and policymakers to upgrade their research, policies, and management strategies in the area of integration of air pollution and climate change impact on forest ecosystems in the Asian region.
Antimicrobial Stewardship in Public-Sector Hospitals in KwaZulu-Natal, South Africa

Antimicrobial resistance (AMR) is a serious global public-health threat. Evidence suggests that antimicrobial stewardship (AMS) is a valuable tool to facilitate rational antibiotic use within healthcare facilities. A cross-sectional situational analysis using a questionnaire was conducted to determine the current status of antimicrobial stewardship (AMS) activities in all public-sector hospitals in KwaZulu-Natal (KZN). The survey had a 79% (57, N = 72) response rate. A total of 75% of hospitals had an antimicrobial stewardship committee (AMSC), 47% (20, N = 43) had a formal written statement of support from leadership, and 7% (3, N = 43) had budgeted financial support. Only 37% (16, N = 43) had on-site or off-site support from a clinical microbiologist, and 5% (2, N = 43) had an on-site infectious disease (ID) physician. Microbiologist input on pathogen surveillance data (aOR: 5.12; 95% CI: 4.08–22.02; p-value = 0.001) and microbiological investigations prior to the commencement of antibiotics (aOR: 5.12; 95% CI: 1.08–42.01; p-value = 0.041) were significantly associated with having either on- or off-site microbiology support. Respondents that had a representative from microbiology on the AMSC were significantly associated with having and interrogating facility-specific antibiograms (P = 0.051 and P = 0.036, respectively). Those facilities that had access to a microbiologist were significantly associated with producing an antibiogram (aOR: 4.80; 95% CI: 1.25–18.42; p-value = 0.022). Facilities with an ID physician were significantly associated with having a current antibiogram distributed to prescribers within the facility (P = 0.010) and significantly associated with sending prescribers personalized communication regarding improving prescribing (P = 0.044). Common challenges reported by the facilities included suboptimal hospital management support; a lack of clinicians, pharmacists, nurses, microbiologists, and dedicated time; the lack of a multidisciplinary approach; low clinician buy-in; inadequate training; a lack of printed antibiotic guidelines; and financial restrictions for microbiological investigations. The survey identified the need for financial, IT, and management support. Microbiology and infectious disease physicians were recognized as scarce human resources.
Does the Application of Additional Hydrophobic Resin to Universal Adhesives Increase Bonding Longevity of Eroded Dentin?

This paper evaluates the effect of an additional hydrophobic resin coat (extra HL) associated with universal adhesives on sound and eroded dentin and evaluated immediately or after 2 years of water storage to improve the microtensile bond strength (μTBS) and nanoleakage (NL) when compared to the use of universal adhesives only. Sixty-four molars were assigned to eight groups using the following combinations: 1. dentin substrate, including sound and eroded dentin; 2. treatment, including the control and extra HL and storage time (immediately and after two-years of storage). Two universal adhesives (Prime & Bond Active or Scotchbond Universal) were evaluated. Before restoration, half of the teeth were subjected to soft-drink erosion. Composite buildups were bonded; specimens were stored (37 °C/24 h), sectioned into resin–dentin bonded sticks and tested for microtensile bond strength and nanoleakage using SEM (immediately and after two-years of storage). Three-way ANOVA and Tukey’s test (α = 0.05%) were used. In the immediate testing, the application of extra HL did not increase microtensile bond strength values compared with the control group in either substrate (p > 0.05). However, extra HL significantly decreased nanoleakage values when applied to eroded and sound dentin (p = 0.0001). After two years, the application of extra HL produced significantly higher microtensile bond strength and lower nanoleakage values than the control group for both adhesives (p = 0.0001). In all cases, sound dentin showed higher microtensile bond strength and lower nanoleakage values than eroded dentin (p = 0.000001). An extra HL increased the bond strength and reduced nanoleakage in eroded dentin after two-years of storage.