Implicit High-Order Flux Reconstruction Solver for High-Speed Compressible Flows

The present paper addresses the development and implementation of the first high-order Flux Reconstruction (FR) solver for high-speed flows within the open-source COOLFluiD (Computational Object-Oriented Libraries for Fluid Dynamics) platform. The resulting solver is fully implicit and able to simulate compressible flow problems governed by either the Euler or the Navier-Stokes equations in two and three dimensions. Furthermore, it can run in parallel on multiple CPU-cores and is designed to handle unstructured grids consisting of both straight and curved edged quadrilateral or hexahedral elements. While most of the implementation relies on state-of-the-art FR algorithms, an improved and more case-independent shock capturing scheme has been developed in order to tackle the first viscous hypersonic simulations using the FR method. Extensive verification of the FR solver has been performed through the use of reproducible benchmark test cases with flow speeds ranging from subsonic to hypersonic, up to Mach 17.6. The obtained results have been favorably compared to those available in literature. Furthermore, so-called super-accuracy is retrieved for certain cases when solving the Euler equations. The strengths of the FR solver in terms of computational accuracy per degree of freedom are also illustrated. Finally, the influence of the characterizing parameters of the FR method as well as the the influence of the novel shock capturing scheme on the accuracy of the developed solver is discussed

The Postmodern Paradox: How the Christian Scholar has Both Declined and Thrived as a Result of Postmodernism’s Influence in Higher Education

The Christian scholar faces an interesting paradox concerning postmodernism’s influence in higher education (Edlin, 2009). One of the key components of the modernism paradigm was the ability for humans to reason (Pells, 2007). Universities were based largely on a model in which young adults were expected to first acquire knowledge, principles, and skills, and then later apply that which was learned to their career ambitions, citizenship, or professional development (Willis, 1995). But in the 1960s and 1970s, higher education began to face increasing social pressure as the ideas of modernism associated with knowledge acquisition, power, and authority came under scrutiny and were replaced with plurality and skepticism (Maranto, Redding, & Hess, 2009). This trend largely grew out of the ideas of French philosopher Jean-Francois Lyotard and his work The Postmodern Condition: A Report on Knowledge (Cary, 1999). Postmodernism has declared Christian scholarship null and void. Conversely, it has unintentionally reignited the quest to understand the spiritual nature of mankind and the world. Thus, Christian scholars have an opportunity to re-engage in a dialogue that had appeared to be closing (Martini, 2008). Ultimately, the Christian scholar must be grounded in an understanding of Biblical principles and open to the empowerment of the Holy Spirit if in fact they are to carry forth the great task of protecting the Truth with which they have been entrusted (2 Timothy 1:14) and they must not shy away from the conversation

Barriers to and supports for success for Maori students in the Psychology Department at the University of Waikato

The overall objective for this evaluation was to investigate the barriers to participating in tertiary education for Maori, and supports for academic success for Maori students in the Psychology Department. With this objective in mind, we set out to: Investigate the barriers that impede success for Maori students in the Psychology Department. Identify variables of success and how they can be more effectively managed within the Psychology Department. Identify factors that contribute to Maori students continuing their studies through to graduate level. Provide recommendations for future development of a supportive environment for Maori students in the Psychology Department

Modeling Cell-to-Cell Communication Networks Using Response-Time Distributions.

Cell-to-cell communication networks have critical roles in coordinating diverse organismal processes, such as tissue development or immune cell response. However, compared with intracellular signal transduction networks, the function and engineering principles of cell-to-cell communication networks are far less understood. Major complications include: cells are themselves regulated by complex intracellular signaling networks; individual cells are heterogeneous; and output of any one cell can recursively become an additional input signal to other cells. Here, we make use of a framework that treats intracellular signal transduction networks as "black boxes" with characterized input-to-output response relationships. We study simple cell-to-cell communication circuit motifs and find conditions that generate bimodal responses in time, as well as mechanisms for independently controlling synchronization and delay of cell-population responses. We apply our modeling approach to explain otherwise puzzling data on cytokine secretion onset times in T cells. Our approach can be used to predict communication network structure using experimentally accessible input-to-output measurements and without detailed knowledge of intermediate steps

PENGARUH KOMPETENSI GURU TERHADAP HASIL BELAJAR SISWA DENGAN LATAR BELAKANG PENDIDIKAN GURU SEBAGAI VARIABEL MODERATING

Penelitian ini berlatar belakang dari rendahnya nilai UN siswa SMA dan MA di Kabupaten Purwakarta. Penelitian ini dilakukan untuk mengetahui pengaruh kompetensi guru terhadap hasil belajar siswa pada mata pelajaran ekonomi dan pengaruh latar belakang pendidikan guru sebagai variabel moderating. Metode yang digunakan dalam penelitian ini yaitu survey eksplanatory pada siswa kelas XI Program IPS SMA/MA di Kabupaten Purwakarta dengan jumlah Sampel 250 siswa dari 665 siswa dari 8 sekolah sampel penelitian. Teknik pengambilan sampel yaitu random sampling sedangkan teknik analisis data menggunakan analisis regresi linier berganda dan dengan menggunakan program SPSS versi 21.00. Hasil penelitian menunjukkan bahwa kompetensi guru berpengaruh positif terhadap hasil belajar siswa dalam mata pelajaran ekonomi, dan latar belakang pendidikan guru sebagai variabel moderating tidak berpengaruh terhadap hubungan kompetensi dengan hasil belajar. Berdasarkan penelitian ini disarankan guru sebaiknya memiliki kompetensi guru yang tinggi agar meningkatkan hasil belajar siswa..;---The background of this study was the low score of National Examination score of Student in SMA/MA in Purwakarta district. This study aims to determine the influence of the competence of teachers to student result of learning on economic subject and the influence of teacher education background as moderating variable. The method in this research used survey explanatory to second grade student of Social Program of SMA/MA in Purwakarta district, the total of the samples were 250 students from population of 665 students from 8 sample school. The technique of sampling was random sampling, while the techniques of data analysis using multiple linear regression analysis with using SPSS version 21.00. The results showed that the competence of teachers have positive influence to the student result of learning economic subject, and the background education of teacher as moderating variable can’t influence to competence of teachers to student resultof learning. Based on the research in this study suggested that the teachers should have the high competence to be able to improve student result of learning

Intrinsic AGN SED & black hole growth in the Palomar--Green quasars

We present a new analysis of the PG quasar sample based on Spitzer and Herschel observations. (I) Assuming PAH-based star formation luminosities (L_SF) similar to Symeonidis et al. (2016, S16), we find mean and median intrinsic AGN spectral energy distributions (SEDs). These, in the FIR, appear hotter and significantly less luminous than the S16 mean intrinsic AGN SED. The differences are mostly due to our normalization of the individual SEDs, that properly accounts for a small number of very FIR-luminous quasars. Our median, PAH-based SED represents ~ 6% increase on the 1-243 micron luminosity of the extended Mor & Netzer (2012, EM12) torus SED, while S16 find a significantly larger difference. It requires large-scale dust with T ~ 20 -- 30 K which, if optically thin and heated by the AGN, would be outside the host galaxy. (II) We also explore the black hole and stellar mass growths, using L_SF estimates from fitting Herschel/PACS observations after subtracting the EM12 torus contribution. We use rough estimates of stellar mass, based on scaling relations, to divide our sample into groups: on, below and above the star formation main sequence (SFMS). Objects on the SFMS show a strong correlation between star formation luminosity and AGN bolometric luminosity, with a logarithmic slope of ~ 0.7. Finally we derive the relative duty cycles of this and another sample of very luminous AGN at z = 2 -- 3.5. Large differences in this quantity indicate different evolutionary pathways for these two populations characterised by significantly different black hole masses.Comment: Accepted for publication in MNRA