Farrington High School

Abstract Plug-in hybrid electric vehicles (PHEV) operates on both electricity and liquid fuel, offering decarbonization and range assurance. Optimization of the electric range is relevant to total cost of ownership, decarbonization potential and battery material supply, but has not been studied by considering battery degradation. This study expands an existing range optimization model by integrating the cycle-based and calendar-based battery degradation mechanisms. The optimization is found to be significant, saving battery cost for consumers by $3000-$5000. The optimal results, in terms of the minimized total cost and the optimized battery capacity, are robust against all exogenous parameters. The degradation effect is significant and can motivate users to “hope” for faster degradation so that the PHEV can be used earlier as a non-plug-in hybrid.

The Russia-Ukraine conflict that broke out in 2022 will have a major impact on the world's economy from the financial market, energy market, and agricultural product market. Ukraine has fertile black land in Eastern Europe. It is an important exporter of agricultural products in the world and an important way point for Russia to export energy. Russia is also one of the most important exporters of energy and agricultural products in the world. This article analyzes the reasons for the conflict between Russia and Ukraine from the perspective of geopolitics, and further combines data and charts to analyze the impact of the event on the world economy. This article can make the government aware of the dangers of war to human society and that only peaceful coexistence between countries can make mankind better. With rapid development, investors should reduce their investment during the war, so as not to lose their property.

<p>This study focuses on the acquisition of the Spanish vowel system by English-speaking L2 learners. The vowel inventory of Spanish varies greatly from the English vowel system, yet the two are not normally differentiated in instructional strategies. We focus primarily on the mispronunciation of vowels, as they are critical to verb morphology in Spanish, as well as their mispronunciation can lead to confusion between minimal pairs in Spanish (e.g., reino ‘kingdom’ vs. reno ‘reindeer’). Using the Corpus Oral de Español como Lengua Extranjera (ELE), we explored the most frequent types of mistakes produced by these learners in their pronunciation of Spanish vowels. Analysis showed that these mispronunciations included, but was not limited to, vowel reduction or vowel alternation. Moreover, the study concludes with an interpretation of plausible sources of this problem as well as discussing the role of vowel mispronunciations in L2 learner’s intelligibility.</p><p>Este estudio se centra en la adquisición del sistema vocálico español por parte de estudiantes de L2 de habla inglesa. El inventario de vocales del español varía mucho del sistema de vocales del inglés, sin embargo, estas diferencias no se incluyen normalmente en las estrategias de instrucción. Este estudio se enfoca principalmente en las pronunciaciones incorrectas de las vocales, ya que son fundamentales para la morfología verbal en español, ya que una pronunciación incorrecta puede generar confusión entre pares mínimos en español (por ejemplo, reino vs. reno). Utilizando el Corpus Oral de Español como Lengua Extranjera (ELE), exploramos los tipos de errores más frecuentes que los aprendices ingleses producen en la pronunciación de las vocales del español. El análisis mostró que estas pronunciaciones incorrectas incluían, pero no se limitaban a, reducciones o alternancias vocálicas. Además, el estudio concluye con una interpretación de los orígenes plausibles de este problema, así como con la discusión del papel de las pronunciaciones incorrectas de las vocales en la inteligibilidad del alumno de L2.</p><p> </p><p><strong> Article visualizations:</strong></p><p><img src="/-counters-/edu_01/0588/a.php" alt="Hit counter" /></p>

Freshwater acidification is the result of acid rain precipitating over a freshwater body. There are significant ecological consequences that result from such precipitation, as ecosystems surrounding freshwater bodies are destroyed because many of the organisms in these ecosystems cannot tolerate the pH change caused by acid rain. Current solutions involve a technique known as liming, where powdered calcium carbonate is added to freshwater bodies creating a buffer that helps neutralize the acidity caused by acid rain. However, scientists have been searching for alternative methods to combat the decrease in pH caused by freshwater acidification, by using substitute compounds. In this experiment, we test the efficacy of alternate solutions involving montmorillonite and calcium hydroxide when compared to the currently employed method of using calcium carbonate to combat acidification.

In this essay, Mingda Sun, a high school student from Connecticut, recounts her summer research internship opportunity at the Center for Quantitative Medicine of UConn Health. She discusses her learning experiences, the challenges she faced, and the encouragement she received from her mentors and peers and explains how this month-long internship helped her overcome her fears of the unknown, as the project was related to concepts that were new to her, like mathematical biology and computer science. Being part of a research team and committing herself to exploring new opportunities reaffirmed Sun’s career aspirations in science research in a STEM field. Her reflection offers helpful insights for students, educators, and researchers who are realizing the benefits that lab-based internship opportunities offer to both high school students and their instructors.

Athletic activities have become increasingly popular over the past decade. As more student-athletes participate in this active lifestyle, coaches, administrators, and other support staff must ensure their safe participation. While some institutions are fortunate enough to have athletic trainers and other highly trained medical personnel, there are still many that may not have access to them. Sickle cell trait (SCT) and sickle cell disease (SCD) have become debated topics as they relate to athletic participation. High profile athletes and unfortunate tragedies have driven the promotion of awareness and education about these sickle cell topics. Healthcare professionals and school districts alike must become more educated about the nature of these medical conditions, specifically as they relate to athletic participation. This article will provide educational information on SCT and SCD, recommendations for safe exercise, and policy planning. These guidelines can be implemented by institutions for the benefit of students and student-athletes with SCT and will also help protect the institutions, their employees, and the individuals under their care.

With the obvious gains in pay and employment equity for women in the workplace during the last 50 years, both in measurable changes and in legislation designed to ensure such changes, some have assumed that gender discrimination is a thing of the past. However, despite improvements, equal pay for equal work and equal opportunities for hiring, promotion, and leadership positions remain elusive in many areas. Stereotype threat and gender differences in self-positioning and communication are two contributors to differences in pay and position. Stereotype threat can result in reduced performance and a tendency for women to opt out of participation in fields and positions that are currently populated mostly by men. Gender differences in self-positioning and communication can result in unwitting discrimination because employers and others fail to notice qualified female candidates. We should employ remedies for these (and other) factors that contribute to gender discrimination. This is likely only if we first acknowledge that gender discrimination is alive and well in today's workplace—whether intentionally so or not.

The 2004 school year marked significant changes in the Advanced Placement (AP) Computer Science curriculum. Most visibly, Java replaced C++ as the exam-testable programming language. More fundamentally, however, the AP CS curriculum now places a greater emphasis on object-oriented design than in previous years. Students are expected to be able to implement interfaces, design and implement class hierarchies using inheritance, analyze the tradeoffs between alternative designs and their associated efficiencies, and make use of Java Collection classes where appropriate. This special session is intended to inform both high school and college teachers as to the extent of these changes and how they affected the development and grading of the 2004 AP CS exams. In addition, it will provide practical insights as to how the new curriculum can be taught in high schools, and how teachers can better prepare their students for the exams.The AP CS Development Committee's charge is not only to provide a comprehensive testing mechanism, but also to recommend a direction that high school teachers should take in preparing a foundation for more advanced student studies during college. This special session will bring together two college and two high school members of the AP CS Development Committee to share some of their insights into the AP program.AP teachers will learn valuable information to continue to support their shift to Java in the classroom and about the exam for which they are preparing their students. College teachers will learn more about the AP CS curriculum and test development process, which may aid them in similar course redesigns and in the placement of students with AP credit.Time will be provided to discuss participant's questions.