Miracle-dz/UniFAR-FTUs huggingface dataset:
Tip vortex cavitation inception estimation at an industrial level

The demand for silent operation of propellers is increasing at the same time as higher efficiency is desired which are contradicting requirements for a propeller design. Cavitation is an important source for noise and the tip vortex cavitation is often the first type of cavitation to occur on a propeller. A method for tip vortex cavitation inception estimation at an industrial level has, therefore, been developed. It is based on sliding mesh simulation with oblique inflow to capture the tangential wake and using source terms to mimic the axial wake. It is using the dynamic Smagorinsky LES model to capture the development of the tip vortex. The method uses a lower mesh resolution than what is needed to capture the lowest pressure in the tip vortex to make it feasible for industrial use. This reduces the time consumption but increases the uncertainty and means that we have an engineering method which is not fully satisfactory from the scientific point of view. However, in an engineering context where the final propeller design is verified by model scale experiments, the increased uncertainty due to lower resolution can be handled in an acceptable way.
Hydroacoustical Calculations On A Generic Underwater Vehicle Using Lighthill-Curle Formulations

In this paper, the hydroacoustical calculations are performed on a generic underwater vehicle and its propulsion system using numerical solvers. Sound pressure level, sound directivity, acoustical spectrum and acoustical patterns are investigated with the aid of finite volume method and hybrid acoustical analogies such as Lighthill-Curle method. In order to validate those calculation tecniques, the results are compared with testcases in which pressure data is obtained using pressure transducers and microphones. So as to determine proper solver type, discretization schema, mesh size and acoustical analogy, the validations are performed in two step, namely hydrodynamical calculations and acoustical solutions. A single propeller 4382 is subjected to an homogenous flow at different rotation rates and inflow velocities. Large Eddy Simulation (LES) is implemented to solve turbulence quantities and filter large eddies in equations. Thrust and torque results are matching well in the region of on and off-design conditions with a low error range. A test case in which the pressure pulses resulted from single propeller VP1304 is also investigated. In this case, monopole, dipole and quadrupole source terms are attained from CFD calculations to couple them with acoustical solutions. The first three harmonics of the fluctuations are investigated and compared with respect to those of the experimental data. Except for the second sensor, the matching is well nice at each harmonic. Using the verified method, the generic underwater vehicle body is supposed to be propelled by the CRP with a specific design rpm. The contributions of different sound sources on the generic underwater vehicle body which is supposed to be propelled by the Counter-rotating Propeller (CRP) is observed and classified with respect to their frequency levels. Regarding to the spectrum of the CRP system, the blade passing frequency, the harmonics and tonal noises are also clearly identified.
NORNET 2021 CAREER IN THE POST-WELFARE SOCIETY Type: Scientific paper Title: Group guidance as retention strategy and dropout prevention – the untapped potentials of group guidance

While there is extensive research into school guidance and counselling services, group counselling and of course educational dropout, there seems to be less research on the specific combination of group guidance as a strategy to reduce dropout. This paper explores how guidance and counselling practitioners in Danish upper secondary school experience the implementation of group guidance as a strategy to retain students and prevent drop out. As part of a study of retention practices in upper secondary schools, we analyse eight narrative interviews practitioners and managers. Based on the research question, What makes group guidance and counselling meaningful in relation to reducing dropout – why and how, the reflexive thematic analysis conceptualise three themes: a) Role of a guidance practitioner and aim b) Student roles and possibilities for participation, and c) Organisational changes. We discuss these themes in relation to the role of guidance in upper secondary education in Denmark.
SPLIT CARINAE ON A SPECIMEN OF FALSE SABER-TOOTHED CAT (CARNIVORA: NIMRAVIDAE) AND THE IMPLICATIONS FOR ANALOLOGOUS TOOTH ABNORMALITY FORMATION IN MAMMALS AND THEROPOD DINOSAURS

An anomalous specimen of Dinictis felina (Carnivora: Nimravidae) from the Scenic Member of the Brule Formation in South Dakota was recently identified possessing bilaterally symmetrically split carinae on the anterior surfaces of the upper canines. The anterior carinae display normal serration patterns from the apex until they bifurcate towards the base. The primary carinae maintain their normal positions while the accessory carinae diverge laterally before curving dorsally towards the tooth base. Though other types of mammalian, particularly human, tooth abnormalities are thoroughly documented, split carinae are previously unreported in mammalian taxa. However, these anomalies are well documented in disparate families of theropod dinosaurs (Tyrannosauridae, Dromaeosauridae, and Carcharodontosauridae). The aforementioned morphology of the carinae of the D. felina specimen is similar to that previously noted in theropods (e.g., split carinae on the anterior face of the tooth), suggesting a possibly homologous underlying cause. Three hypotheses for the split carinae abnormality documented in theropods were previously proposed: trauma, aberrant tooth replacement, and genetic expression. The continuous cycle of tooth replacement in theropods and lack of genetic information in fossil material made it difficult to confidently identify a preferred hypothesis, though genetic expression was more rigorously supported. We propose that these hypotheses are not mutually exclusive, and that genetic expression, influenced by other factors initiating epigenetic modification, is the most parsimonious interpretation for the presence of split carinae in both mammals and theropods given the constrained pattern of mammalian tooth replacement, clear bilateral symmetry of the split carinae, and serration morphology of the accessory carinae in this specimen of D. felina. 70 Proceedings of the South Dakota Academy of Science, Vol. 99 (2020)
An Ultra-Low-Power Frequency Multiplier based on Mixed-Mode DLL with Output Frequency from 4 to 6 GHz

An Ultra-Low-Power frequency multiplier based on Mixed-Mode DLL is presented in this paper. The operating frequency range is between 100 and 150 MHz which enables to produce output signals in the frequency range from 4 to 6 GHz. NAND-based delay cells are used in the digital part of the delay line due to their wide operating frequency range and small intrinsic delay. The analogue part of the delay line is based on the inverter delay chain with biasing circuit. It was added into the system to overcome the resolution problem and improve jitter performance. The total locking time changes from 10 to 14 clock cycles based on the operating frequency. The simulated peak-to-peak jitter is 21 ps and 1.95 ps for the generated clock operating at 5 GHZ and output clock of DLL operating at 125 MHz respectively.
Fault Modeling and Test Generation for Technology-Specific Defects of Skyrmion Logic Circuits

This paper advances the recent results on testing skyrmion logic circuits, which recently gained popularity as an emerging technology. A skyrmion circuit differs significantly from the existing CMOS circuit in physical structure and operation mechanisms. The previous work identified 19 defect types and modeled them as either a stuck-at fault, no-fault causing no error, or a technology-specific defect requiring special consideration. The previous work was limited to those defects that map onto single stuck-at faults. The present work addresses the class of technology-specific defects that were not discussed before. Our defect mapping onto an analyzable fault model uses extensions of fault equivalence and fault dominance principles. We model the defects as transition faults whose test generation is supported in the logic-level EDA systems. All such defects require two-pattern tests, except one defect, missing annihilation notch of OR gate, that needs three patterns. These require test generation for constrained stuck-at fault, generally available in EDA systems. The reported results show that majority of the defects of skyrmionbased circuits can be detected using the proposed test generation approach; few exceptions are defects that map through dominance onto faults rendered redundant due to the circuit structure.
Frictional Driver Analysis and Preventing Skid Study of Frictional Windlass

The key problem of frictional windlass running safely is preventing skid.On the base of analying the frictional windlass steel rope frictional driver,inquiring into the element of affecting frictional force,posing the necessary method of heightening the frictional windlass preventing skid ability,expounding the feasibility of the method.
Mode-Adaptive Subsampling of SAD/SSE Operations for Intra Prediction Cost Reduction

Modern video encoders, such as the recently proposed AV1 and VVC, offer significant encoding gains at the cost of a corresponding increase of the computational effort. This is the case of the adopted intra prediction techniques, comprehending an increased number of prediction modes and range. To mitigate this computational cost, the presented work proposes a new mode-adaptive algorithm that significantly reduces the number of SAD/SSE operations during intra prediction, by generating an optimized subsampling pattern adaptive to each prediction mode. The method can be applied to any video codec and, when applied to AV1, it led to an encoding time reduction and BD-BR impact of 15.36% and 0.6%, respectively, or 7.97% and –0.02%, depending on the selected subsampling parameters. When implemented in hardware, the proposed technique provides an effective reduction as high as 75% of both the area and power on the modified distortion calculation module.
Methods And Theories Of Art History Anne Dalleva

Art In Its Time-Paul Mattick 2003-12-08 Art In Its Time takes a close look at the way in which art has become integral to the everyday 'ordinary' life of modern society. It explores the prevalent notion of art as transcending its historical moment, and argues that art cannot be separated from the everyday as it often provides material to represent social struggles and class, to explore sexuality, and to think about modern industry and our economic relationships.
Case-only exome variation analysis of severe alcohol dependence using a multivariate hierarchical gene clustering approach

Background Variation in genes involved in ethanol metabolism has been shown to influence risk for alcohol dependence (AD) including protective loss of function alleles in ethanol metabolizing genes. We therefore hypothesized that people with severe AD would exhibit different patterns of rare functional variation in genes with strong prior evidence for influencing ethanol metabolism and response when compared to genes not meeting these criteria. Objective Leverage a novel case only design and Whole Exome Sequencing (WES) of severe AD cases from the island of Ireland to quantify differences in functional variation between genes associated with ethanol metabolism and/or response and their matched control genes. Methods First, three sets of ethanol related genes were identified including those a) involved in alcohol metabolism in humans b) showing altered expression in mouse brain after alcohol exposure, and altering ethanol behavioral responses in invertebrate models. These genes of interest (GOI) sets were matched to control gene sets using multivariate hierarchical clustering of gene-level summary features from gnomAD. Using WES data from 190 individuals with severe AD, GOI were compared to matched control genes using logistic regression to detect aggregate differences in abundance of loss of function, missense, and synonymous variants, respectively. Results Three non-independent sets of 10, 117, and 359 genes were queried against control gene sets of 139, 1522, and 3360 matched genes, respectively. Significant differences were not detected in the number of functional variants in the primary set of ethanol-metabolizing genes. In both the mouse expression and invertebrate sets, we observed an increased number of synonymous variants in GOI over matched control genes. Post-hoc simulations showed the estimated effects sizes observed are unlikely to be under-estimated. Conclusion The proposed method demonstrates a computationally viable and statistically appropriate approach for genetic analysis of case-only data for hypothesized gene sets supported by empirical evidence.
Instability , Computational Efficiency and Statistical Accuracy Instability , Computational Efficiency and Statistical Accuracy

Many statistical estimators are defined as the fixed point of a data-dependent operator, with estimators based on minimizing a cost function being an important special case. The limiting performance of such estimators depends on the properties of the population-level operator in the idealized limit of infinitely many samples. We develop a general framework that yields bounds on statistical accuracy based on the interplay between the deterministic convergence rate of the algorithm at the population level, and its degree of (in)stability when applied to an empirical object based on n samples. Using this framework, we analyze both stable forms of gradient descent and some higher-order and unstable algorithms, including Newton’s method and its cubic-regularized variant, as well as the EM algorithm. We provide applications of our general results to several concrete classes of models, including Gaussian mixture estimation, non-linear regression models, and informative nonresponse models. We exhibit cases in which an unstable algorithm can achieve the same statistical accuracy as a stable algorithm in exponentially fewer steps—namely, with the number of iterations being reduced from polynomial to logarithmic in sample size n. Raaz Dwivedi, Nhat Ho, and Koulik Khamaru contributed equally to this work. 1 ar X iv :2 00 5. 11 41 1v 2 [ cs . L G ] 2 0 M ar 2 02 2 Ho, Khamaru, Dwivedi, Wainwright, Jordan, Yu
CamSkyGate: camouflaged skyrmion gates for protecting ICs

Magnetic skyrmion has the potential to become one of the candidates for emerging technologies due to its ultra-high integration density and ultra-low energy. Skyrmion is a magnetic pattern created by transverse current injection in the ferromagnetic (FM) layer. A skyrmion can be generated by localized spin-polarized current and behaves like a stable pseudoparticle. Different logic gates have been proposed, where the presence or absence of a single skyrmion is represented as binary logic 1 or logic 0, respectively. In this paper, we propose novel camouflaged logic gate designs to prevent an adversary from extracting the original netlist. The proposal uses differential doping to block the propagation of the skyrmions to realize the camouflaged gates. To the best of our knowledge, we are the first to propose camouflaged skyrmion gates to prevent an adversary from performing reverse engineering. We demonstrate the functionality of different camouflaged gates using the mumax3 micromagnetic simulator. We have also evaluated the security of the proposed camouflaged designs using SAT attacks. We show that the same security from the traditional CMOS-based camouflaged circuits can be retained.
Design and Research of Automobile Parameter Database in the Vehicles General Performance Inspecting

In this paper, the extant of the automobile parameters database is introduced, as well as the construction, requirements and character and so on. The significance of the automobile parameters database in the vehicle general performance inspecting station in Guangdong Province is analyzed and designed. It is pointed out that the vehicles parameters database is an effective and efficient method in the vehicle general performance test, and it can better meet the practical need of vehicle general performance test through 2 years of practice. The automobile parameters database has the high extendibility and flexibility.
A Critical Review of Talent Management in a Local Context: A Case Study

Talent management (TM) is the current buzzword for organisations that want to attain competitive advantage globally, including Saudi Arabia. The present study explores the status and the emergence of TM in Saudi Arabia in the last few years based on reviewing the pre-existing literature. In addition, an insight into the challenges specific to the management of talent in Saudi Arabia is discussed. Due to the traditional and conservative society of Saudi Arabia, along with its governmental policies such as Saudization and the Nitaqat system, it has become extremely challenging for private organisations to employ TM practices. This study provides insights into various TM practices employed in Saudi Arabia; however, none of the studies have provided any information about the types of TM practices to be employed for a better and more efficient organisational performance in the context of Saudi Arabia. It is concluded that the practice of TM in Saudi Arabia is extremely selective in private organisations and can be considered to be in its infancy. Moreover, the gaps in the research in these areas are identified, and based on those, recommendations are made for the scope of future work. This study contributes to a critical understanding on the suitable TM practices that can be applied in Saudi Arabia as well. It provides insights assisting to further research and practical applications. Our study finds its relevance among TM academicians, human resource (HR) departments, policy makers, government agencies, talent managers, and employers who are either already functional in Saudi Arabia or are planning to open business processes in Saudi Arabia in the near future. This can act as a strategic development when collaborated appropriately with the government authorities.
Predictive function control based on fuzzy

In this paper, we introduce a method of compensating for the controlled quantity with fuzzy inference to solve the problem of model mismatch caused by the predictive function control for. Then we apply this kind of predictive function to the combustion systems of industrial boiler, through simulation of continuous system, we can conclude that this controller has strong robustness.
Individual and community experiences and the use of language in understanding diabetes and depression in rural Kenya

ABSTRACT As the prevalence of long-term conditions continues to rise it becomes increasingly important to identify ways to mitigate their effects, including the psychological impact. In rural Kenya identifying people with diabetes or mental health problems is challenging due to the stigma and negative experiences within community settings. Four broad themes were identified; (1) misconceptions and stigma: the use of language, (2) treatment and medications, (3) community beliefs and alternative treatment pathways, (4) the role of informal and formal care. Our study demonstrated the detrimental effect of the use of stigmatising language and misconceptions surrounding diabetes and depression at both the individual and community levels. Inequalities in health care access were observed and a lack of resources in rural communities was evident. Improvements in support for health care workers at the community level as well as acknowledging the importance of informal care could help improve the psychological and emotional impact of diabetes and depression.
Effect of Peroral Supplementation of Selenium and Vitamin E on Udder Healthin Dairy Cows

Intrammamary infections – mastitis and prepartum immune suppression are almost associated with endocrine changes and decreased intake of critical nutrients. Among the most important antioxidant nutrients but often deficient in compound feeding stuff are vitamin E (VTE), and selenium (Se) compounds.The aim of the experiment was to study Seand VTE sources in the diet of dairy cows in late phase of pregnancy and their effects on udder health and milk quality during the first two weeks after calving. The experiment included 40 cows of Slovak Pied cattle divided into two equal groups (n = 20). The first group (D)was peroral supplemented with addition of 0.3 mg Se/kg in anorganic form of sodium selenite and 50 mgVTE in form of dl-α-tocopherol acetate/kg of DM given from 6 weeks pre partum to parturition (total dose of 5.0 mg Se/kg and 1020 dl-α-tocopherol acetate/kg of DM per day). The control group (C) was without peroral supplementation of Se and VTE with the diet containing 0.2 mg of Se and 56 mg VTE/kg of DM.In supplemented group were observedincreased plasmatic concentrations of Se and VTEon the day of parturition and on the 14 day of lactationas well as increased activity of glutathione peroxidaseimmediately after calving.In addition to increased plasma levels, a 12.5% reduced incidence of clinical mastitis was observed in the supplemented group during the first two weeks after calving.
Neural Machine Translation with Phrase-Level Universal Visual Representations

Multimodal machine translation (MMT) aims to improve neural machine translation (NMT) with additional visual information, but most existing MMT methods require paired input of source sentence and image, which makes them suffer from shortage of sentence-image pairs. In this paper, we propose a phrase-level retrieval-based method for MMT to get visual information for the source input from existing sentence-image data sets so that MMT can break the limitation of paired sentence-image input. Our method performs retrieval at the phrase level and hence learns visual information from pairs of source phrase and grounded region, which can mitigate data sparsity. Furthermore, our method employs the conditional variational auto-encoder to learn visual representations which can filter redundant visual information and only retain visual information related to the phrase. Experiments show that the proposed method significantly outperforms strong baselines on multiple MMT datasets, especially when the textual context is limited.
STUDENTS’ PERSPECTIVES TOWARD TEACHER’S WRITTEN CORRECTIVE FEEDBACK: A VOICE FROM UPPER SECONDARY SCHOOL STUDENTS IN SURABAYA Perspektif Siswa Terhadap Written Corrective Feedback (WCF): Suara

This study aims to illustrate the students’ perspective toward the teacher’s written corrective feedback (WCF) given by the English teacher to the students’ writing. This study is conducted in the frame of qualitative case study in which 10 students of a Private Senior High School were involved to collect the data. Semi-structured interview was conducted to those students and the data obtained were analyzed using thematic analysis. The results of the current study illustrated that WCF raises the students’ self-awareness to the writing mistakes, and becomes a medium for the teacher to give more attentions to students in the learning process. WCF is also the guidance for students to write better. But the teacher should be careful to give WCF to the certain students who are categorized as lazy students. This study is expected to give valuable information for English teachers that WCF is needed by the students in writing leaning