Miracle-dz/UniFAR-FTUs huggingface dataset:
Runtime Adaptation of Data Stream Processing Systems: The State of the Art

Data stream processing (DSP) has emerged over the years as the reference paradigm for the analysis of continuous and fast information flows, which often have to be processed with low-latency requirements to extract insights and knowledge from raw data. Dealing with unbounded dataflows, DSP applications are typically long running and thus, likely experience varying workloads and working conditions over time. To keep a consistent service level in face of such variability, a lot of effort has been spent studying strategies for runtime adaptation of DSP systems and applications. In this survey, we review the most relevant approaches from the literature, presenting a taxonomy to characterize the state of the art along several key dimensions. Our analysis allows us to identify current research trends as well as open challenges that will motivate further investigations in this field.
Generation of acoustic tones in round jets at a Mach number of 0.9 impinging on a plate with and without a hole

Abstract The generation of acoustic tones in four round jets at a Mach number of 0.9 impinging on a plate at a distance $L=6r_0$ from the nozzle exit, where $r_0$ is the nozzle radius, has been investigated by large-eddy simulation. Three plates are perforated by holes of diameters $h=2r_0$, $3r_0$ and $4. 4r_0$, centred on the jet axis, whereas the fourth plate has no hole, in order to study the effects of the hole on the jet flow and acoustic fields. In all cases, acoustic tones emerge in the jet near field, upstream but also downstream of the plate for the perforated plates. Their frequencies are similar for all jets and close to those predicted for aeroacoustic feedback loops establishing between the nozzle and the plate, involving flow disturbances convected downstream and waves propagating upstream at the ambient speed of sound. Their levels, however, decrease with the hole diameter, by a few dB for $h\leqslant 3r_0$ but approximately by 40 dB for $h=4. 4r_0$. The features of the feedback loops are identified by computing two-dimensional space–time correlations and frequency–wavenumber spectra of the pressure fluctuations in the jet mixing layers. These loops are found to be closed by free-stream upstream-propagating guided jet waves, produced by the impingement of vortical structures on the plate for $h\leqslant 3r_0$ and by the scattering of the jet aerodynamic pressure fluctuations by the hole edges for $h=4. 4r_0$. Finally, an acoustic analogy is used to show that the contributions of the pressure fluctuations on the plate to the radiated noise are dominant.
Dismembering Cominius: Political Violence and Iambic Aggression in Catullus 108

Abstract Carmen 108 is one of the most neglected and unloved in the Catullan corpus. When it is mentioned in scholarship, it is either as a distastefully extreme instance of iambic invective or the object of a prosopographical exercise in identifying the addressee, Cominius. Gnilka alone has tried to situate it in the context of late Republican political violence, in particularly public lynching. Instead of isolating these two aspects of the poem from each other, this article argues that c. 108 is a self-conscious exploration of the interaction between poetic form and hors-texte. The terms of the invective situate it firmly within the tradition of Archilochean and Hipponactean iambos and it may even allude directly to a fragment of the latter. Yet the threats of violence are transformed when recontextualized within the world of the late Republic, where such literary violence was very much a reality. The poem performs a symbolic dismemberment of Cominius’ body, but one that cannot be safely separated from acts of mob violence in the period. The pragmatics of Catullan iambos explores the limits of verbal violence as speech-act and the point at which hate-speech becomes indistinguishable from the violence it incites.
Effects of Endwall Motion on the Aero-Thermal Performance of a Winglet Tip in a HP Turbine

In a gas turbine, the casing endwall moves relative to the blades. In this paper, numerical methods are first validated using experimental results for a stationary endwall. They are then used to study the effects of endwall motion on the aero-thermal performance of both winglet tips with and without tip film cooling at a tip gap of 1.9%C. The endwall motion imposes a tangential force on the flow. A scraping vortex is formed and the flow pattern within the tip gap, changes significantly. The tip leakage mass flow rate that exits the tip gap from the suction side edge reduces by about 42% with endwall motion. Overall, the endwall motion reduces the tip leakage loss by 15%. The flow field downstream of the cascade also changes with endwall motion. With endwall motion, the changed flow pattern within the tip gap significantly changes the distribution of the Nusselt number on the winglet tip. For the winglet tip without tip film cooling, the Nusselt number and the heat load decrease with endwall motion. This is mainly due to the reduction in the tip leakage mass flow ratio, which reduces the leakage velocity over the tip. On the winglet tip with tip film cooling, the cooling effectiveness increases by 9% with endwall motion. Combined with the reduced Nusselt number, the heat flux on the winglet tip with tip film cooling reduces by 31% with endwall motion. The cooling effectiveness on the near tip region of the pressure side remains almost unchanged, but the heat flux rate in this area reduces. This is because the reduced tip leakage mass flow ratio reduces the Nusselt number. With the moving endwall, the thermal performance of the suction side surface of the blade is affected by the scraping vortex. The effects of endwall motion should be considered during the design of the blade tip. © 2011 ASME
Chapter IV: Bilingual Education and English as a Second Language: The Elementary School

Bilingual education stimulates widely contrasting associations and signals a variety of meanings to different people. This should not be surprising, given the diverse goals of various advocacy groups who have promoted a bilingual approach to education in recent decades, not to mention t:he sharply divergent sociopolitical agenda of parents and families who have stood to benefit from this approach. In a similar vein, English as a second language (ESL) is understood differently by different persons, whether they are participants or nonparticipants in bilingual education. Sometimes these differences are based on lack of knowledge about schools, programs, and multicultural communities; sometimes they are not, as highly informed professionals may differ significantly on the appropriate role of FSL in bilingual education. In reflecting on bilingual education and ESL in the elementary school, I will first attempt to capture meaningful distinctions in usage with regard to these terms, particularly in reference to implicit assumptions not clearly understood by decision makers and by mainstream educators whose specialties lie outside of this area. I will then discuss current practice in bilingual education at the elementary school level in the United States, particularly as it relates to the education of language minority children in the public schools. "Language minority children" may be simply defined as referring to "children from homes in which English is not the predominant language of communication between parents and children. "1 These children may or may not be
Analysis on Interference Characteristic of Wideband Light Source used for FOG

Autocorrelation method was used to simulate the time-interference of wide-band light source such as Gaussian,asymmetry,flat-filter and Gaussian with ripple spectrum.The analysis of the interference characteristic of these kinds of sources shows that asymmetry of the spectrum has evident effect on the low level interference stripe,and ripple of the spectrum obviously extends the interference time of the source.So these two characteristics will affect the performance of FOG.
Access to Constructivist and Didactic Teaching: Who Gets It? Where is it Practiced?

Calls for the reform of instruction in U.S. classrooms, particularly in secondary schools, are growing and often strident. Many reformers advocate a move away from traditional, teacher-centered, (didactic) direct instruction, where students are passive receptors of knowledge, toward more student-centered understanding-based (constructivist) teaching that focuses on exploration and experimentation. In this study we investigate the issue of access to these two types of instruction in U.S. high school science classrooms. We use a nationally representative sample of 3,660 students and their science teachers drawn from the first two waves of the National Educational Longitudinal Study (NELS:88). Although didactic instruction is more common among higher–socioeconomic status and female students, constructivist instruction is practiced more often among students of lower ability. Constructivist teaching is also more common in both higher-level science courses (i.e., chemistry) and lower-level courses (i.e., basic biology and physical science). The students of average social and academic status appear to be the forgotten majority with respect to constructivist instruction. We offer explanations for the findings and discuss implications for educational policy and social equity in high school science.
Sliding the Doors: Locking and Unlocking Possibilities for Teacher Leadership

This case study describes the experience of three teacher leaders who attempt to lead from within their classroom. Interview and biographical data were collected and analyzed both within case and across cases. The cases individually describe the experiences of teacher leaders and the cases collectively help us define the components of teacher leadership along with the barriers and facilitators that teacher leaders face. The results of these analyses identify the following assertions: teacher leaders navigate the structures of schools, teacher leaders nurture relationships, teacher leaders model professional growth, teacher leaders help others with change, and teacher leaders challenge the status quo by raising children's voices. These assertions suggest the need for rethinking organizational structures that inhibit as well as facilitate teacher leadership from within the classroom.
Trend 2: Teacher Turnover and Teacher Quality: Refocusing the Issue

Mullis, I. V. S. , Dossey, J. A. , Foertsch, M. A. , Jones, L. R. , & Gentile, C. A. (1991). Trends in academic progress: Achievement of U.S. students in science, 1969-70 to 1990; mathematics, 1973 to 1990; reading, 1971 to 1990; writing, 1984 to 1990. Washington, DC: U.S. Department of Education. Pong, S. (1996). School participation of children from single-mother families in Malaysia. Comparative Education Review, 40 (3), 231-249. Post, D. , & Pong. S. (1997). Intra-family educational inequality in Hong Kong: The waning effect of sibship composition. Philadelphia: Penn State University, Population Research Institute. Forthcoming in Comparative Education Review . Schneider, B. , & Coleman, J. S. (1993). Parents, their children, and schools . San Francisco: Westview Press. Stedman, L. C. (1994). Incomplete explanations: The case of U.S. performance in the international assessments of education. Educational Researcher, 23 (7), 24-32. Taylor, A. R. (1996). Conditions for American children, youth, and families: Are we “world class”? Educational Researcher, 25 (8), 10-12. U.S. Bureau of the Census. (1992). Marital status and living arrangement s (CPR Population Characteristics, Series P-20, No. 468). Washington, DC: Government Printing Office. World Bank. (1996). Social indicators of development 1996 . Washington, DC: Author. Zill, N. (1996). Family change and student achievement: What we have learned, what it means for schools. In A. Booth & J. F. Dunn (Eds.), Family-school links (pp. 139-174). Mahwah, NJ: Lawrence Erlbaum Associates. 28 Teachers College Record
Identifying Bixa orellana L. New Carotenoid Cleavage Dioxygenases 1 and 4 Potentially Involved in Bixin Biosynthesis

Carotene cleavage dioxygenases (CCDs) are a large family of Fe2+ dependent enzymes responsible for the production of a wide variety of apocarotenoids, such as bixin. Among the natural apocarotenoids, bixin is second in economic importance. It has a red-orange color and is produced mainly in the seeds of B. orellana. The biosynthesis of bixin aldehyde from the oxidative cleavage of lycopene at 5,6/5′,6′ bonds by a CCD is considered the first step of bixin biosynthesis. Eight BoCCD (BoCCD1-1, BoCCD1-3, BoCCD1-4, CCD4-1, BoCCD4-2, BoCCD4-3 and BoCCD4-4) genes potentially involved in the first step of B. orellana bixin biosynthesis have been identified. However, the cleavage activity upon lycopene to produce bixin aldehyde has only been demonstrated for BoCCD1-1 and BoCCD4-3. Using in vivo (Escherichia coli) and in vitro approaches, we determined that the other identified BoCCDs enzymes (BoCCD1-3, BoCCD1-4, BoCCD4-1, BoCCD4-2, and BoCCD4-4) also participate in the biosynthesis of bixin aldehyde from lycopene. The LC-ESI-QTOF-MS/MS analysis showed a peak corresponding to bixin aldehyde (m/z 349.1) in pACCRT-EIB E. coli cells that express the BoCCD1 and BoCCD4 proteins, which was confirmed by in vitro enzymatic assay. Interestingly, in the in vivo assay of BoCCD1-4, BoCCD4-1, BoCCD4-2, and BoCCD4-4, bixin aldehyde was oxidized to norbixin (m/z 380.2), the second product of the bixin biosynthesis pathway. In silico analysis also showed that BoCCD1 and BoCCD4 proteins encode functional dioxygenases that can use lycopene as substrate. The production of bixin aldehyde and norbixin was corroborated based on their ion fragmentation pattern, as well as by Fourier transform infrared (FTIR) spectroscopy. This work made it possible to clarify at the same time the first and second steps of the bixin biosynthesis pathway that had not been evaluated for a long time.
Exploring Correlates of Loss of Control Eating in a Nonclinical Sample

Objective Loss of control (LOC) eating has been directly related to the core aspects of the psychopathology of eating disorders and to different dimensions of emotion and behavior regulation and self-criticism. This study investigates a model representing the interplay between these dimensions to understand LOC eating among a nonclinical sample. Methods A total of 341 participants, recruited in a college campus (mean age 23.21, SD = 6.02), completed a set of self-report measures assessing LOC eating, weight suppression, psychopathology of eating disorders, depression, negative urgency, emotion regulation difficulties, and self-criticism. Path analysis modeling tested a hypothesized model with 3 paths for LOC eating as follows: (1) psychopathology of eating disorders; (2) emotion and behavior regulation; and (3) interplay between these paths. Results We found goodness-of-fit indexes to our data: χ2 = 17.11, df = 10, Comparative Fit Index (CFI) = 0.99, Tucker-Lewis index (TLI) = 0.98, Root Mean Square Error Approximation (RMSEA) = 0.045, Standardized Root Mean Square Residual (SRMR) = 0.041, suggesting that: (1) participants with higher weight suppression showed higher degrees of the psychopathology of eating disorders, which was linked to higher levels of LOC eating; (2) self-criticism was a mediator between emotion regulation and depression/negative urgency; (3) self-criticism was a mediator between emotion regulation and disorder eating, which was significantly associated with LOC eating via increased negative urgency. Conclusion Our model shows that LOC eating occurs for individuals with the psychopathology of higher eating disorders who experience depressive symptoms and act rashly under distress for their inability to cope adequately with negative feelings of self-devaluation. These findings point to the importance of negative self-evaluations and feelings of inadequacy or worthlessness to understand LOC eating among college students.
CircRNAs as Novel Biomarkers and Therapeutic Targets in Renal Cell Carcinoma

Circular RNAs (circRNAs) are a type of long non-coding RNA with covalently closed loops that are naturally resistant to exoribonuclease. With the rapid development of high-throughput sequencing technologies and bioinformatics, increasing data suggest that circRNAs are abnormally expressed in renal cell carcinoma (RCC) and act as important regulators of RCC carcinogenesis and progression. CircRNAs play important biological roles in modulating cell proliferation, migration, invasion, apoptosis, and gemcitabine chemoresistance in RCC. Most of the circRNAs studied in RCC have been reported to be significantly associated with many clinicopathologic characteristics and survival parameters of RCC. The stability and specificity of circRNAs enable them potential molecular markers for RCC diagnosis and prognosis. Moreover, circRNAs have emerged as targets for developing new therapies, because they can regulate various signaling pathways associated with RCC initiation and progression. In this review, we briefly summarize the biogenesis, degradation, and biological functions of circRNAs as well as the potential clinical applications of these molecules for RCC diagnosis, prognosis, and targeted therapy.
Examining the Role of Green Infrastructure as an Advocate for Regeneration

The alignment of Green Infrastructure (GI) planning principles with urban regeneration mandates can have a significant impact on the long-term socio-economic and ecological functionality of an area. As a mechanism to address landscape dereliction GI has been promoted as offering a suite of options to revitalize denuded spaces. This can take many forms including tree planting, waterfront redevelopment, the regeneration of former industrial sites, and a rethinking of spaces to make them more ecologically diverse. However, the successes seen in GI-led regeneration need to be considered in terms of the geographical, political, and socio-economic context. The following provides a review of regeneration projects that have integrated GI into development principles, examining whether these have led to positive change. Through a reflection on the scale, focus and location of these projects we discuss the factors that have shaped investment before identifying key factors that influence the inclusion of GI in regeneration works. The paper concludes that we have a growing catalogue of projects that can be used as a “green print” to align GI with regeneration to successfully delivery landscape rehabilitation and socio-economic revitalization.
Application of Transgenic Zebrafish Models for Studying the Effects of Estrogenic Endocrine Disrupting Chemicals on Embryonic Brain Development

Endocrine disrupting chemicals (EDCs) are environmental pollutants that mimic hormones and/or disrupt their function. Estrogenic EDCs (eEDCs) interfere with endogenous estrogen signalling pathway(s) and laboratory animal and human epidemiological studies have provided evidence for a causal link between exposure to them during embryonic/early life and neurological impairments. However, our understanding of the molecular and cellular mechanism(s) underlying eEDCs exposure effects on brain development, tissue architecture and function and behaviour are limited. Transgenic (TG) zebrafish models offer new approach methodologies (NAMs) to help identify the modes of action (MoAs) of EDCs and their associated impacts on tissue development and function. Estrogen biosensor TG zebrafish models have been applied to study eEDC interactions and resulting transcriptional activation (via a fluorescent reporter expression) across the entire body of the developing zebrafish embryo, including in real time. These estrogen biosensor TG zebrafish models are starting to deepen our understanding of the spatiotemporal actions of eEDCs and their resulting impacts on neurological development, brain function and behaviour. In this review, we first investigate the links between early life exposure to eEDCs and neurodevelopmental alterations in model organisms (rodents and zebrafish) and humans. We then present examples of the application of estrogen biosensor and other TG zebrafish models for elucidating the mechanism(s) underlying neurodevelopmental toxicities of eEDCs. In particular we illustrate the utility of combining estrogen biosensor zebrafish models with other TG zebrafish models for understanding the effects of eEDCs on the brain, spanning cellular processes, brain circuitry, neurophysiology and behaviour. Finally, we discuss the future prospects of TG zebrafish models as experimental models for studying more complex scenarios for exposure to contaminant mixtures on neurological development and function.
Effects of Lactobacillus acidophilus KLDS1.0901 on Proliferation and Apoptosis of Colon Cancer Cells

Colon cancer is the most common type of malignant tumor. The cytotoxicity effect of lactic acid bacteria may be active by inhibiting cancer cell proliferation, producing anticancer compounds, and inducing apoptosis in cancer cells, but the mechanism is unclear. Our previous study revealed that Lactobacillus acidophilus KLDS1.0901 has good probiotic properties. In this study, We screened out the highest inhibition rate of L. acidophilus KLDS1.0901 and assessed the effects on the proliferation of HT-29, Caco-2, and IEC-6 cells. Then, the apoptosis mechanism of HT-29 cells was studied when treated with L. acidophilus KLDS1.0901. Results showed that L. acidophilus KLDS1.0901 inhibited the proliferation of HT-29 and Caco-2 cells in a dose-dependent manner and reached the maximum under the condition of multiplicity of infection (MOI) = 100 (rate of Lactobacillus to cells) at 48 h. With the increase in time and MOI, reactive oxygen species in HT-29 cells, the apoptosis rates of HT-29 cells were increased, and the amount of blue fluorescence of the cells was also increased after Hoechst 33258 staining. Furthermore, L. acidophilus KLDS1.0901 reduced the mitochondrial membrane potential of HT-29 cells. Notably, 1,133 differentially expressed genes were screened by transcriptomics research, including 531 up-regulated genes and 602 down-regulated genes. These genes were involved in the nuclear factor κB and PI3K-AKT signaling pathways related to the apoptosis of HT-29 cells. These findings suggested that L. acidophilus KLDS1.0901 has the potential to be used in the development of a new type of functional foods for adjuvant treatment of colon cancer.