Numerical Treatment of a Modified MacCormack Scheme in a Nondimensional Form of the Water Quality Models in a Nonuniform Flow Stream

Two mathematical models are used to simulate water quality in a nonuniform flow stream. The first model is the hydrodynamic model that provides the velocity field and the elevation of water. The second model is the dispersion model that provides the pollutant concentration field. Both models are formulated in one-dimensional equations. The traditional Crank-Nicolson method is also used in the hydrodynamic model. At each step, the flow velocity fields calculated from the first model are the input into the second model as the field data. A modified MacCormack method is subsequently employed in the second model. This paper proposes a simply remarkable alteration to the MacCormack method so as to make it more accurate without any significant loss of computational efficiency. The results obtained indicate that the proposed modified MacCormack scheme does improve the prediction accuracy compared to that of the traditional MacCormack method

COVID-19 and religious education reimagined: discovering a reflective space through Hannah Arendt’s concept of thinking

Following the outbreak of the COVID-19 pandemic and its rapid spread around the world, the normality of people’s lives was disrupted. Education was not immune from this. In many countries, to limit the spread of the infection, students were required by the government to study remotely. This social isolation in a limited space generated concerns among educators about the quality of learning, notably through virtual platforms. However, this crisis also brought with it an opportunity for change for the better. Social distancing could allow for a ‘reflective space’ that extended students’ learning beyond the physical space. This research paper explores how the disruption of the normality of our lives and the provision of reflective space might enrich religious education, both in terms of curriculum and pedagogy. I will analyse this issue philosophically in light of Hannah Arendt’s concept of ‘thinking’. This thinking refers to the quest for meaning which occurs when we withdraw ourselves from inter homines esse (being among humans) into a solitary realm. Drawing on Arendt’s ideas, I argue that the reflective space enables us to reimagine religious education such that it better prepares students from across the cultural and religious spectrum for a democratic society

Reflecting on Teacher’s Authority through Hannah Arendt’s “The Crisis in Education”

Child-centered education has become pervasive due to its emphasis on freedom, which is highly valued in modern society. This progressive approach has brought an inquiry into the teacher’s authority which is viewed as traditional and irrelevant for students today. This essay aims to step back and to explore the concept of the teacher’s ‘authority’ more deeply through Hannah Arendt’s writing entitled “The Crisis in Education”. It begins by analyzing what Arendt means by the ‘crisis’ in education, particularly in the American context. Then, by departing from the progressive interpretation, I re-examine the concept of ‘authority’ and its relation to ‘freedom’, based on ancient Greek and Roman understandings. Drawing on these analyses, Arendt asserts that teachers play a significant role because they prepare students to love and care for the world (amor mundi). Nevertheless, I argue that a teacher’s authority must also include attention to the private realm that continues impacting students’ learning at schools. Only in this way are students genuinely prepared for their responsibility as political agents in our society.
 Abstrak
 Pendidikan yang berpusat pada anak menjadi kian populer karena sangat menekankan kebebasan, sesuatu yang sedemikian dijunjung tinggi oleh masyarakat modern. Pendekatan progresif ini membuat otoritas guru lantas dipertanyakan, karena dianggap terlalu tradisional dan tidak relevan lagi. Artikel ini ingin menelusuri konsep ‘otoritas’ guru secara lebih mendalam melalui tulisan filsuf Hannah Arendt yang berjudul “The Crisis in Education”. Pertama, akan diselidiki makna ‘krisis’ dalam konteks Pendidikan di USA. Kedua, sedikit menyimpang dari tafsiran progresif dan dengan menimba inspirasi dari pemahaman Yunani dan Romawi kuno, artikel ini hendak menilai kembali makna ‘otoritas’ dan relasinya dengan ‘kebebasan’. Ketiga, berdasarkan analisis makna ‘otoritas’ tersebut, Arendt menegaskan bahwa guru memainkan peran krusial karena merekalah yang menyiapkan siswa untuk mencintai dan peduli kepada dunia sekitarnya (amor mundi). Penulis berpendapat lebih lanjut bahwa otoritas guru harus memperhatikan dimensi privat yang sangat memengaruhi proses pembelajaran siswa di sekolah. Hanya dengan demikian siswa dapat sungguh siap untuk kemudian memikul tanggung jawab sebagai aktor-aktor politis dalam masyarakat.
 Kata-kata kunci: otoritas, kebebasan, pendidikan-berpusat-pada-anak, dimensi privat, dimensi politis, amor mund

Rubber Tree (Hevea brasiliensis) Biomass, Nutrient Content, and Heating Values in Southern Thailand

Article 638201

Graham\u27s Pebbling Conjecture Holds for the Product of a Graph and a Sufficiently Large Complete Graph

For connected graphs $G$ and $H$, Graham conjectured that $\pi(G\square H)\leq\pi(G)\pi(H)$ where $\pi(G), \pi(H)$, and $\pi(G\square H)$ are the pebbling numbers of $G$, $H$, and the Cartesian product $G\square H$, respectively. In this paper, we show that the inequality holds when $H$ is a complete graph of sufficiently large order in terms of graph parameters of $G$

Business models for the 3D food printing industry

3D food printing is a fascinating novel technology with many promising applications, from futuristic-looking food topersonalized nutrition, and space food for astronauts. However, much of its potential is only realized in the laboratoryor speculated in the literature. This research is an attempt to explore the barriers to the diffusion of this newtechnology to the wider market. It argues that the choice of the business model plays as important a role as thetechnical characteristics of the technology itself. By using both the concept of business model innovation and productinnovation, some of the barriers could be first better understood, reduced, and overcome.The research consists of findings from two studies presented in two appended papers. The first study is qualitativeresearch that provides a stock of what business models are being used to commercialize 3D food printingtechnology. The second study explores the possibilities of using business model innovation to reduce the barriersto new technology diffusion in a new market.The research contributes to the empirical knowledge of business and economic aspects of 3D food printingtechnology. It contributes to the field of business model research by complementing empirical studies of businessmodel innovation in the context of novel technology. The comparisons of business model patterns in 3D food printingcould be generalized and applied to make similar comparisons between industries. Further research can focus onthe experiment with the integration of business model innovation and product development, including the design,testing and evaluation phases.On the managerial side, the business model patterns could serve as a starting point for companies looking for a wayto innovate the business model in new directions. Replication of proven and functioning business models mayreduce risk and development time

The Feasibility for Exporting Power Painter into Thailand

Recently, international business has become meaningful for international companies. It makes the business more profitable and interesting. Moreover, it has made an innovative and improvement for the world of business. This project will study the process of exporting and marketing of the Power Painter , product of Wagner Spray Tech Corporation, into Thailand which is directly involved with international business. It will study both controllable and uncontrollable business factors. Finally, it will study the feasibility of exporting the selected product into the selected country. However, the exporting and marketing the Power Painter into Thailand should be feasible

Ant Colony Optimization for Tourist Route

Ant Colony Optimization is a relatively new meta-heuristic that has proven its quality and versatility on various combinatorial optimization problems such as the traveling salesman problem, the vehicle routing problem and the job shop scheduling problem. The inspiring source of ACO is the pheromone trail laying and following behavior of real ants, which use pheromones as a communication medium. In this project the ACO algorithm to routing problems in traveling cities under static and dynamic conditions. This study is divided into three parts. The first part aims to identify various connecting cities in Thailand with appropriate distances. The second part of this research involves formulating and applying the ACO algorithms to find the shortest path based on the distance calculated from source to destination cities. The ACO routing will then be applied on the constructed cities, taking into consideration different traffic conditions. The final part of the study focused on finding the shortest path and calculation of cost based on the distance traveled

A ‘learning community’ as a social justice model for Catholic education in Thailand

Inspired by Paul VI’s Octogesima Adveniens regarding the Church’s urgent response to social issues, in his speech to Jesuit alumni in Valencia in July 1973, Fr. Pedro Arrupe reflected on the concept of ‘social justice’ and its implications for Jesuit schools. He spoke about how Jesuit education could assist students to become ‘men and women for others’, men and women who can bring about change for the better in their societies. Since then, promoting ‘social justice’ has become one of the Jesuit educational priorities and has brought about significant reform within Jesuit educational institutions worldwide. This includes the newly established institution of a ‘learning community’ that addresses educational inequality for poor indigenous students in Thailand. This research paper reflects on how this institution can be a model that promotes justice in education and forms our students to become ‘agents of change.’ This paper begins by revisiting Fr. Arrupe’s concept of ‘social justice’ and philosophically analyses the learning formation of a new Jesuit institution, called the Xavier Learning Community (XLC). Drawing from this analysis, I argue that the model of ‘learning community’ may also inspire other Catholic schools to address common social issues in Thailand based on the Christian values of continual conversion, fraternal and sororal relationship, and discernment

Existence and Algorithm for the Systems of Hierarchical Variational Inclusion Problems

We study the existence and approximation of a solution for a system of hierarchical variational inclusion problems in Hilbert spaces. In this study, we use Maingé’s approach for finding the solutions of the system of hierarchical variational inclusion problems. Our result in this paper improves and generalizes some known corresponding results in the literature