Miracle-dz/UniFAR-FTUs huggingface dataset:
RETRACTED: Active aerodynamic noise control research for supersonic aircraft cavity by nonlinear numerical simulation

Prediction of aerodynamic noise is the key technology for the internal weapon bay of supersonic aircraft. Nonlinear numerical simulation is proposed as a new method to analyze noise recently. The Non-Linear Acoustic Solver (NLAS) is employed to study the cavity noise in supersonic combined with Reynolds-averaged Navier-Stokes (RANS) equation. It is shown by the comparison between the calculated results and the WICS wind tunnel tests when the Mach number is 2, the sound pressure level of every monitoring point is in good agreement with experiments. It indicates that the NLAS method which is based on turbulence reconstruction could well simulate the cavity noise in supersonic and reduce mesh numbers. Based on this, the contribution to aerodynamic noise suppression made by active control measure such as adding jet screen at the leading edge of cavity is investigated. It is found that jet screen improves flow condition and increases cavity safety, therefore, it is suitable for suppression of aerodynamic noise under supersonic condition.
Designing a memorable in-store customer shopping experience: practical evidence from sports equipment retailers

PurposeThis study aims to detect the dimensions of the in-store customer shopping experience from the sports retailer perspective and to investigate how the role of sports equipment stores is changing.Design/methodology/approachThis exploratory study performs semi-structured interviews with retail managers of sports equipment stores.FindingsThis research reveals the importance of the dimensions of immersive design, sensorial ambient elements, social relationships, trialability and real experience sharing in designing a memorable in-store shopping experience in sports stores, and it highlights that the store's role in the sports context is transitioning from sales space to an interactive, immersive, engaging and convivial place. It proposes a model to design the in-store customer shopping experience effectively.Practical implicationsSports equipment managers can make their physical stores as experiential as possible by investing in expert, passionate personnel and technology in order to create a real in-store experience of the product and the sports practice.Originality/valueWhile sports equipment retailers acknowledge the importance of providing customers with a memorable shopping experience by creating an evocative environment and placing multiple touchpoints in stores, management scholars have paid limited attention to sports stores. This study explores the ways in which sports retail managers can design their stores effectively in experiential terms.
Spin caloritronics in two-dimensional 
CrI3/NiCl2
 van der Waals heterostructures

Two-dimensional van der Waals (vdW) heterostructures have recently emerged as attractive candidates to work as spintronic and optoelectronic devices. Here, two types of magnetic ${\mathrm{CrI}}_{3}/{\mathrm{NiCl}}_{2}$ vdW heterostructures are constructed to design spin caloritronic devices. The first-principles calculations uncover that the magnetic configurations of ${\mathrm{CrI}}_{3}/{\mathrm{NiCl}}_{2}$ vdW heterostructures can be converted easily to a ferromagnetic, an antiferromagnetic, and even a bipolar magnetic semiconducting state by an external electric field. More interestingly, two thermal spin-dependent currents with opposite spin orientations can be driven by a temperature gradient to flow in opposite transport directions independently in the different layers of vdW heterostructures, demonstrating that the ${\mathrm{CrI}}_{3}/{\mathrm{NiCl}}_{2}$ vdW heterostructures can exhibit a nearly perfect thermal spin-filtering effect in each layer while generating a well-defined spin-Seebeck effect in the whole system. Our work puts forward a class of material candidates to design spin caloritronic devices characterized by multiple inspiring thermal-spin transport behaviors.
Legacy and sustainability in the Olympic Movement’s new norm era: when reforms are not enough

ABSTRACT In times when cities around the world are withdrawing from consideration to host the Olympic Games, the International Olympic Committee (IOC) has responded by enacting policy reforms. Entitled Olympic Agenda 2020: 20 + 20 Recommendations, we examine forty recommendations through the lens of critical policy analysis. Specifically, we use Strittmatter et al.’s framework of legitimation strategies in policy formulation and implementation to investigate the ways in which the use of sustainability and legacy terminology is employed in the process of legitimating the IOC today. Findings demonstrate two general legitimation strategies. One is the familiar framing of the Olympic Games in terms of sustainability and legacy with a new emphasis on the Games as an opportunity to integrate cities’ long-term planning needs into bidding and hosting the event. The second focus asserts the Olympic Movement’s global leadership role in sport in the context of sport itself being depicted as a leading social institution in making meaningful social change. In this paper, we detail these legitimation strategies and offer commentary related to the need for the IOC to use this policy reform process to move beyond rhetoric alone to embed meaningful and measurable accountability standards in the hosting process.
SVIR rumor spreading model considering individual vigilance awareness and emotion in social networks

Rumor, as a form of information, can be widely spread in a short time. A host of researchers focus on the spread of rumor, aiming to explore the rules of rumor spreading and put forward effective measures to help control the spread of rumor. In real life, when the individual is not interested in the rumor spread or feels that the rumor is not related to him, it is easy to trigger the individual’s vigilance awareness. On the contrary, if the rumor is more closely related to the individual’s life, the individual will usually be less alert and have great motivation to share it with friends. Based on the typical Susceptible–Infected–Recovered (SIR) model, a new vigilant state is added to describe the above phenomenon and a Susceptible–Vigilant–Infectious–Recovered (SVIR) rumor model is proposed. In addition, considering the fact that the infectious with high emotion may cause emotional resonance among individuals, this model adds a connection edge from the recovered to the infectious triggered by emotional infection. Based on the obtained dynamic equations, the steady state of the model is analyzed by utilizing basic reproduction number method and verified on the generated homogeneous network as well as Facebook network. Simulation results reveal that the improvement of individual vigilance awareness can reduce the influence of rumor. Although high emotional infectious can promote the spread of rumor, appealing them to clarify the fact for curbing rumor spreading is a forceful measure.
Impact of Increased Travel Speed of a Transportation Set on the Dynamic Parameters of a Mine Suspended Monorail

The method of increasing the efficiency of using one of the most common means of auxiliary transport in underground coal mines—suspended monorails—is presented. Increase of velocity is one of the key parameters to improve the efficiency and economical effect related with the underground auxiliary transport. On the other hand, increasing the velocity results in bigger value of force acting on the suspended monorail route and its suspensions. The most important issue during increasing the velocity is ensuring the required safety for the passengers and not overloading the infrastructure. In order to analyze how increasing velocity influences the level of loads of the route suspension and the steel arch loads, the computational model of suspended monorail was developed. The computational model included both the physical part (embedded in the program environment based on the Multi-Body System method) and the components of the monorail control system. Two independent software environments were cooperating with each other through the so-called co-simulation. This model was validated on the base of results obtained on the test stand. Then, the numerical simulations of emergency braking with different values of velocity were conducted, which was not possible with the use of physical objects. The presented study can be used by the suspended monorail’s producers during the designing process, and leads to increase the safety on underground transportation routes.
Contextualizing adolescents’ self-awareness of problematic mobile phone use: a preliminary study

Adolescents engage cognitively, emotionally, and behaviorally with smartphones. Growing evidence suggests they struggle to interact with them in moderation, which has been framed in relation to behavioral addiction as problematic mobile phone use. This study contextualized 13-15 year-old adolescents’ self-awareness of problematic mobile phone use. Focus groups were conducted with 11 adolescents who assessed themselves using the problematic use of mobile phones scale. The authors used interpretative phenomenological epistemology as a guiding framework. Audio recordings were analyzed qualitatively using a constant comparison approach. Students agreed or strongly agreed with multiple dimensions of the problematic mobile phone use construct. Four major themes emerged in relation to circumstances, factors, processes, constraints, and opportunities: drivers of excessive smartphone use, with family or friends, barriers to healthier smartphone use, and nighttime habits. Adolescents’ assessment of perceived proper versus problematic mobile phone can inform hypotheses targeted at improving overall wellness and developing healthy habits in adolescence that carry over into young adulthood and beyond.
İşletme Yöneticilerinin Endüstri 4.0 ve İnsan Kaynakları Yönetimi Algılarının Belirlenmesine Yönelik Bir Araştırma1 (A Research on The Determination of Business Managers Perceptions of Industry 4.0 and Human Resources Management)

Endüstri 4.0 Algısı ve İnsan Kaynakları Uygulamalarına Etkileri” başlıklı bildirinin genişletilmiş halidir. Önerilen Atıf/ Suggested Citation Yelkikalan, N. , Kılıç Kırılmaz, S. Erden Ayhün S. (2021). İşletme Yöneticilerinin Endüstri 4.0 ve İnsan Kaynakları Yönetimi Algılarının Belirlenmesine Yönelik Bir Araştırma, İşletme Araştırmaları Dergisi, 13 (1), 651-666. İŞLETME ARAŞTIRMALARI DERGİSİ JOURNAL OF BUSINESS RESEARCH-TURK 2021, 13(1), 651-666 https://doi.org/10.20491/isarder.2021. 1158
SOCIAL MEDIA ANXIETY FROM THE VIEW OF JORDANIAN YOUTH: A META CONTENT ANALYSIS

Anxiety is contemplated to be one of the critical issues that Jordanian youth suffer from. In recent years, it was discovered from an array of studies that Jordanian youths (JY) have a big problem related to social media anxiety (SMA), which is regarded as the reason for excessive use of social media platforms (SMP). The highlighted issue here will be mentioned as that of the research problem. It crystallizes in a sharp increase in this phenomenon of "social media anxiety" by Jordanian youth, where it stressed JY's passion for using SM's platforms. Furthermore, depending on what had been observed, the massive impact of this problem on youths makes us much more interested in this study to specify the degree of influence of this issue on social media anxiety. This paper contains a massive objective, which is understanding how social media would be contributed to their health and youth lives. The paper discussed the usage of a considerable percentage of social media platforms by Jordanian youths. It has been the focal point for discussion among the specialist and educators. This paper discussed the issues concerning social media anxiety in academic and education literature, from SM's problems from the Jordanian youths' lives. The paper concludes that no effort has been made for Jordanian youth to look into social media anxiety, which has many consequences for society.
Keeping Faith with Homoskedasticity or Going Back to Heteroskedasticity? The Case of Fatang Stocks

Did the pattern of US stock markets volatility change due to the COVID-19 or have the US stock markets been less volatile despite the pandemic shock? And as for tech stocks, are they even less volatile than the overall market? In this paper we provide evidence in favour of a ``quietness'' in the stock markets, interrupted by the COVID-19, by analysing dispersion, skewness and kurtosis characteristics of the empirical distribution of nine returns series including individual FATANG stocks (FAANG: Facebook, Amazon, Apple, Netflix and Google; plus Tesla) and US indices (S&P500, DJIA and NASDAQ). A new methodology based on semi-variance and semi-kurtosis is proposed. Structural breaks and conditional heteroskedasticity are also analyzed by considering the traditional symmetrical and asymmetrical GARCH models. We show that in the most recent past, despite the COVID-19 pandemic, the FATANG tech stocks are characterized mostly by conditional homoskedasticity while the returns of US stock indices are mainly conditional heteroskedastic.
Remarkable Response to Cisplatin Doublet Chemotherapy in Pulmonary Metastasis With Left Atrial Extension From a Nasopharyngeal Cancer

A 60-year-old male patient whose nasopharyngeal carcinoma was brought to complete remission with induction chemotherapy composing of cisplatin plus fluorouracil and subsequent radiotherapy with intent of cure eight years ago presented with dyspnea due to left side massive pleural effusion with pleural seedings, left lower lobe huge space occupying lesion, and left atrial tumor extending from the intrapulmonary lesion through left inferior pulmonary veins. Pleural biopsy revealed a picture of nonkeratinizing squamous cell carcinoma positive for Epstein-Barr virus-encoded small RNAs in situ hybridization, leading to a diagnosis of late pulmonary metastases from the antecedent nasopharyngeal carcinoma. Systemic chemotherapy with initial cisplatin plus paclitaxel and subsequent cisplatin plus gemcitabine brought remarkable resolution to the malignant cardiac and intrathoracic lesions. So far as we know, this is the first case report of left atrial invasion from pulmonary metastasis of a nasopharyngeal carcinoma origin in the English literature.
Incremental Feature Selection Using a Conditional Entropy Based on Fuzzy Dominance Neighborhood Rough Sets

Incremental feature selection approaches can improve the efficiency of feature selection used for dynamic datasets, which has attracted increasing research attention. Nevertheless, there is currently no work on incremental feature selection approaches for dynamic ordered data. Moreover, the monotonic classification effect of ordered data is easily affected by noise, so a robust feature evaluation metric is needed for feature selection algorithm. Motivated by these two issues, we investigate incremental feature selection approaches using a new conditional entropy with robustness for dynamic ordered data in this study. First, we propose a new rough set model, i.e., fuzzy dominance neighborhood rough sets (FDNRS). Second, a conditional entropy with robustness is defined based on FDNRS model, which is used as evaluation metric for features and combined with a heuristic feature selection algorithm. Finally, two incremental feature selection algorithms are designed on the basis of the above researches. Experiments are performed on ten public datasets to evaluate the robustness of the proposed metric and the performance of the incremental algorithms. Experimental results verify that the proposed metric is robust and our incremental algorithms are effective and efficient for updating reducts in dynamic ordered data.
Mutual fund flow-performance dynamics under different market conditions in South Africa

Questions regarding the specific factors that drive continuous cash allocations by investors into portfolios of actively managed funds, despite consistent underperformance, continue to remain an inexhaustive aspect of the literature that calls for further investigations. This study assesses the dynamic relationship between fund flow and performance of equity mutual funds in South Africa under different market conditions. The study employs a GMM technique to analyze the panel data of 52 South African equity mutual funds from 2006 to 2019. The analysis found that convexity is prevalent in the flow-performance relationship, where fund contributors in subsequent periods allocate recent underperforming and outperforming funds disproportionate cash. This finding is evident in the lack of significance in the past performance effects on subsequent fund flows. The study found that lagged fund flows, fund size, fund risk, and market risk drive subsequent fund flows under changing conditions of the general market and fund markets. Overall, it is posited that fund contributors and asset administrators adapt to prevailing market dynamics relative to trading decisions. As a result, this affirms the normative guidelines of the Adaptive Markets Hypothesis, leading to the conclusion that exogenous factors drive fluctuations in fund flows in South Africa.
Medición y análisis de la impedancia en PLC de banda angosta en un ambiente universitario

Narrowband powerline communication systems are widely used in many applications, such as smart metering devices, home automation and low-speed command and control systems. However, power lines were not designed for data transmission and they represent a harsh environment for communication. In the specific bibliography, it is possible to find studies that show the diverse issues of Narrowband Powerline Communication, being the impedance of the grid one of them. The main objective of the present work is to provide a study on the impedance of the grid over this communication band. This study was done in a University environment which has a diverse number of unknown loads, considering the variation with time and location. The data acquisition system developed to conduct the study is shown. The analysis of the results shows that the local grid exhibits issues as least as severe as the ones presented by other authors in different countries and environments.
Pengaruh Citra Perguruan Tinggi dan Kualitas Jasa Terhadap Minat Beli di Universitas Muhammadiyah Gresik Melalui Kepercayaan sebagai Variabel Intervening (Studi Kasus di Universitas Muhammadiyah Gresik)

Penelitian ini bertujuan untuk mengetahui pengaruh citra perguruan tinggi dan kualitas jasa terhadap minat beli melalui kepercayaan sebagai variabel intervening. Penelitian ini menggunakan pendekatan kuantitatif. Populasi yang digunakan dalam penelitian ini adalah calon mahasiswa yang ada di kabupaten Gresik. Jumlah sampel sebanyak 100 orang dengan menggunakan purposive sampling berdasarkan kriteria-kriteria tertentu. Alat analisis yang digunakan dalam penelitian ini yaitu program analisis SPSS 15 for Windows. Hasil penelitian menunjukkan bahwa variabel citra perguruan tinggi dan kualitas jasa secara bersama-sama berpengaruh positif dan signifikan terhadap minat beli. Berdasarkan hasil analisis, variabel citra perguruan tinggi dan kualitas jasa berpengaruh secara tidak langsung terhadap minat beli melalui kepercayaan. Namun, nilai koefisien pengaruh total citra perguruan tinggi lebih kecil yaitu 0,161 jika dibandingkan dengan kualitas jasa 0,368 yang lebih besar.
Effect of laser cladded co-doped strontium fluorapatite nanopowder coating on the antibacterial and cell attachment of Ti-6Al-4V implants for bone applications

ABSTRACT In this study, doped strontium fluorapatite (Sr-FAP) nanopowders were synthesised by sol-gel and used as a coating to modify Ti-6Al-4V substrates through CO2 laser cladding. The Ca ions of FAP were substituted by a different amount of Sr ions to increase bone cell differentiation and antibacterial properties. Lattice parameters and crystal size values of different samples decrease with increasing the amount of Sr ion. According to the morphological results, the laser cladding Sr doped FAP nanopowders can create homogenously and crack-free coating on the Ti-6Al-4V substrates. The 0.6SrFAP nanopowder sample had a more hydrophilic nature in comparison to other Sr doped FAP nanopowders. This sample showed antibacterial properties and high cell adhesion, spreading, and viability while provided a bioactive and favourable surface for bone tissue regeneration. Therefore, 0.6SrFAP nanopowder laser cladding on the surface of Ti-6Al-4VV implants seems to be promising for further in-vivo investigations in bone applications.
Digital Intangible Heritage: Inventories, Virtual Learning and Participation

ABSTRACT The paper draws on debates about digital heritage and further examines the implications in terms of safeguarding intangible cultural heritage. Taking i-Treasures, an EU-funded FP7 collaborative research project, as a case in point, it investigates ways in which new information and communication technologies have been used to serve heritage documentation and learning. The main argument unfolds along the themes of inventories, virtual learning and community participation. First, the paper looks at the concept of inventorying by examining digital repositories of cultural expressions and how they ascribe meaning and value to intangible heritage. It then explores how documentation recordings and data are used in virtual learning environments and create online engagements with heritage expressions. The third part examines how digital technologies inform relations between communities and intangible heritage. What are the implications in terms of access and participation to the heritage experience and how does this affect the uses and meanings of intangible heritage by (local and virtual) practicing communities and heritage professionals? By focusing on the i-Treasures web platform, the paper aims to raise questions about how intangible heritage is defined and performed digitally and how this relates to issues of participation in the safeguarding process.
Perilesional edema in brain metastases as predictive factor of response to systemic therapy in non-small cell lung cancer patients: a preliminary study

Background The significance of upfront systemic therapies as an alternative to whole brain radiotherapy (WBRT) for multiple brain metastases (BM) is debatable. Our purpose is to investigate if peritumoral edema could predict the intracranial response to systemic chemotherapy (chemo) in patients with advanced non-squamous non-small cell lung cancer (non-SQ-NSCLC) and synchronous multiple BM. Methods In this observational cohort study, we evaluated the outcome of 28 patients with multiple BM (≥3) treated with chemo based on cisplatin/carboplatin plus pemetrexed (chemo, group A, n=17) or WBRT plus subsequent chemo (group B, n=11). The intracranial response, assessed by the response assessment neuro-oncology (RANO) BM criteria, was correlated with the degree of BM-associated edema estimated by the maximum diameter ratio among fluid attenuated inversion recovery (FLAIR) and gadolinium-enhanced T1WI (T1Gd) per each BM at the baseline brain magnetic resonance imaging (MRI). Results No differences were observed in baseline characteristics between both groups, except for the number of patients under steroid treatment that was clearly superior in group B (P=0.007). Median OS was similar between groups. Regarding FLAIR/T1Gd ratio (F/Gd), patients treated with chemo alone exhibited significantly higher values (P=0.001) in those who developed intracranial progression disease (PD) (2.80±0.32 mm), compared with those who achieved partial response (PR) (1.30±0.11 mm) or stable disease (SD) (1.35±0.09 mm). In patients treated with WBRT, F/Gd ratio was not predictive of response. Conclusions Peritumoral edema estimated by F/Gd ratio appears a promising predictive tool to identify oligosymptomatic patients with multiple BM in whom WBRT can be postponed.