自习室开关灯优化问题(英文稿)

自习室开放的优化管理1摘要本题是针对某校提供的数据及要求，对该校自习室的开放做最合理的安排，使用电功率达到最小。

在问题1中，通过二项分布求得上自习人数期望值。

通过建立0-1模型，利用lindo软件，在各约束条件下计算得到最优解。

问题2可归结为多目标规划问题。

建立模型Ⅱ，分为三层：首先求出最大满意程度；其次使开放教室的总功率最小，以及尽量同区开放的条件下，求出最优解。

问题3要求在1，2的基础上由于人数的增多，需在每区最多新建一个教室。

可先假设每区都新建了一个教室，模型与2类似。

通过求出最优解将用不着的“新建教室”去掉即可。

2问题重述自习教室开放的优化管理近年来，大学用电浪费比较严重，集中体现在学生上晚自习上，一种情况是去某个教室上自习的人比较少，但是教室内的灯却全部打开，第二种情况是晚上上自习的总人数比较少，但是开放的教室比较多，这要求我们提供一种最节约、最合理的管理方法。

下面是某学校收集的部分数据，请完成以下问题。

00开放（如果哪个教室被开放，则假设此教室的所有灯管全部打开）。

完成以下问题：1．假如学校有8000名同学，每个同学是否上自习相互独立，上自习的可能性为0.7.要使需要上自习的同学满足程度不低于95%，开放的教室满座率不低于4/5，同时尽量不超过90%。

问该安排哪些教室开放，能达到节约用电的目的.2．假设这8000名同学分别住在10个宿舍区，现有的45个教室分为9个自习区，按顺序5个教室为1个区，即1,2,3,4,5为第1区，…，41,42,43,44,45为第9区。

这10个宿舍区到9个自习区的距离见表2。

学生到各教室上自习的满意程度与到该教室的距离有关系，距离近则满意程度高，距离远则满意程度降低。

假设学生从宿舍区到一个自习区的距离与到自习区任何教室的距离相同。

请给出合理的满意程度的度量，并重新考虑如何安排教室，既达到节约用电目的，又能提高学生的满意程度。

另外尽量安排开放同区的教室。

3．假设临近期末，上自习的人数突然增多，每个同学上自习的可能性增大为0.85，要使需要上自习的同学满足程度不低于99%，开放的教室满座率不低于4/5，同时尽量不超过95%。

光照对上课的影响英语作文The impact of lighting on classroom learning is often underestimated. Bright, natural light can improve students' alertness and concentration, while dim or artificial lighting can cause drowsiness and fatigue. 。

Inadequate lighting can also make it difficult for students to read and take notes, leading to frustration and poor academic performance. 。

Moreover, harsh or flickering lights can cause eye strain and headaches, making it even harder for students to focus on the lesson. 。

On the other hand, well-designed lighting can create a comfortable and stimulating learning environment. Soft, warm light can promote relaxation and creativity, while cool, blue light can enhance productivity and mental clarity. 。

In addition, lighting can be used to highlightimportant information and create a sense of hierarchy inthe classroom. For example, a spotlight can draw attentionto the teacher's desk or a projection screen, while dimmer lights can create a cozy atmosphere for group work or independent study. 。

怎样节省学校能源的英语作文Energy conservation has become a critical issue in today's world, and our schools are no exception. As institutions that foster learning and development, it is our responsibility to teach students the importance of sustainability and to practice it ourselves. Here are some ways that we can conserve energy in our school.Firstly, implementing energy-efficient lighting systems is crucial. Replacing traditional incandescent bulbs with LED lights or compact fluorescent lamps (CFLs) can significantly reduce energy consumption. LED lights, in particular, have a longer lifespan and consume less power, making them a cost-effective and environmentally friendly choice. Additionally, ensuring that lights are turned off when not in use, such as in classrooms and corridors, can further reduce energy waste.Secondly, promoting the use of electronic devices efficiently is essential. Encouraging students and teachers to turn off computers, projectors, and other electronics when not in use can help conserve energy. Additionally,investing in energy-efficient electronics, such as laptops and tablets, can further reduce power consumption.Thirdly, optimizing heating and cooling systems can help conserve energy. Installing programmable thermostats that automatically adjust temperatures based on occupancy patterns can significantly reduce energy use. Additionally, ensuring that windows and doors are properly sealed to prevent heat loss or gain can further enhance energy efficiency.Fourthly, encouraging students and staff to adopt sustainable habits can also help conserve energy. Simple actions like turning off faucets when not in use, using reusable water bottles instead of disposable ones, and recycling paper and other materials can significantly reduce the school's carbon footprint.Lastly, educating students about the importance of energy conservation is crucial. Organizing workshops, seminars, or even simple classroom discussions on the topic can help students understand the impact of their actions on the environment and encourage them to adopt sustainable practices in their daily lives.In conclusion, conserving energy in our school is a crucial step towards creating a sustainable future. By implementing energy-efficient lighting systems, promoting efficient use of electronics, optimizing heating and cooling systems, encouraging sustainable habits, and educating students, we can significantly reduce ourschool's energy consumption and contribute to a healthier, more sustainable planet.**如何在学校节约能源**节能已成为当今世界的一个关键问题，我们的学校也不例外。

A Proposal to Repair Street LampsIn the heart of our city, the street lamps stand as silent guardians, casting their warm glow over the pavement, brightening the way for the late-night travelers. However, many of these lamps have been neglected, with their lights dimming or flickering, casting a shadow of uncertainty over our streets. It is imperative that we address this issueand repair these street lamps to restore their original brightness, not only for the sake of safety but also forthe beauty of our cityscape.The need for repair is urgent. The dim or flickering lights create a dangerous environment for pedestrians and drivers alike. In the absence of proper lighting, accidents are more likely to occur, posing a threat to the safety of our citizens. Furthermore, the dimmed lights give a senseof neglect and decay, which does not reflect the vibrancy and progress of our city.The repair of street lamps will not only enhance the safety of our streets but also contribute to the aesthetics of our city. Bright, well-lit streets create a welcoming atmosphere, inviting citizens and visitors alike to explorethe city's beauty. Moreover, well-maintained street lamps are a testament to the efficiency and care of our city's authorities, reflecting a positive image of our city to the outside world.The repair of street lamps also holds economic benefits. By ensuring the proper functioning of these lamps, we can reduce the number of accidents and subsequently, the associated costs of medical treatment, property damage, and insurance claims. Furthermore, well-lit streets encourage more people to venture out at night, boosting the economy through increased activity in the retail, dining, and entertainment sectors.To ensure the successful repair of street lamps, we propose the following measures:Firstly, a thorough inspection of all street lamps should be conducted to identify those that require repair. This will help us to prioritize our resources and ensurethat the most critical repairs are completed first.Secondly, we need to allocate sufficient funds for the repair work. This can be achieved by setting aside adedicated budget for street lamp repairs or seeking grants and donations from private organizations and individuals. Thirdly, we should engage professional teams with the necessary expertise and equipment to carry out the repairs efficiently and effectively. These teams should be trained to handle a variety of issues, from simple bulb replacements to complex electrical repairs.Lastly, we need to establish a regular maintenance schedule for street lamps to prevent future issues. This can be achieved by assigning a team of maintenance workers to regularly inspect and repair street lamps as needed.In conclusion, the repair of street lamps is a crucial task that must be addressed with urgency. By restoring their brightness, we can enhance the safety and beauty of our city, while also boosting its economy. By allocating funds, engaging professional teams, and establishing a maintenance schedule, we can ensure that our street lamps continue to shine brightly, guiding us through the night and reflecting the prosperity and progress of our city.**建议修灯**在我们城市的中心，路灯静静地矗立着，它们的温暖光芒照亮了人行道，为深夜的旅行者指明了方向。

建议修灯灯的英语作文English:It is highly advisable to repair the broken lamp as soon as possible. Not only does a malfunctioning lamp disrupt the smooth functioning of daily activities, but it also poses potential safety hazards. Inadequate lighting can lead to accidents and mishaps, especially during nighttime. Additionally, a faulty lamp consumes unnecessary energy, contributing to higher electricity bills and environmental degradation. By promptly fixing the lamp, one ensures a safer and more efficient living environment. Moreover, neglecting minor repairs can exacerbate the issue over time, leading to more extensive damage and higher repair costs. Therefore, it is prudent to address the problem promptly and seek professional assistance if necessary. Ultimately, repairing the lamp promptly not only enhances safety and efficiency but also demonstrates responsible stewardship of resources and environmental conservation.中文翻译:尽快修理破损的灯具是非常明智的。

关于写节约用电的作文英语1. Turn off the lights when you leave the room. It's a simple habit that can save a lot of energy and money in the long run.2. Unplug electronics when they are not in use. Even when turned off, many devices still consume energy when they are plugged in.3. Use natural light whenever possible. Open the curtains and let the sunlight brighten up your space instead of relying on artificial lighting.4. Opt for energy-efficient appliances. Look for the Energy Star label when purchasing new appliances to ensure they are designed to use less electricity.5. Set your thermostat to a reasonable temperature. Adjusting it by just a few degrees can make a bigdifference in your energy consumption.6. Use power strips to easily turn off multiple devices at once. This can help prevent energy waste fromelectronics that are left on standby mode.7. Take shorter showers to reduce water heating costs. Conserving water also helps to save energy used in pumping and treating water.8. Air dry your clothes instead of using a dryer. Not only does this save energy, but it also helps to extend the life of your clothing.9. Cook with lids on pots and pans to retain heat and cook food more efficiently. This can help reduce the amount of time and energy needed to prepare meals.10. Insulate your home to prevent heat loss in the winter and keep cool air in during the summer. Proper insulation can significantly reduce your energy consumption and utility bills.。

关于教室关灯英文作文英文：Turning off the lights in the classroom is an important action that we should all take. There are several reasons why we should turn off the lights when we leave the classroom.Firstly, turning off the lights can save energy. When we leave the classroom with the lights on, we are wasting electricity. This not only harms the environment but also wastes money. By turning off the lights, we can reduce our carbon footprint and save on energy bills.Secondly, turning off the lights can extend thelifespan of the bulbs. Leaving the lights on for extended periods of time can cause the bulbs to burn out faster. By turning off the lights, we can ensure that the bulbs last longer and reduce the need for frequent replacements.Lastly, turning off the lights can promote good habits. By making it a habit to turn off the lights when we leave the classroom, we can develop a sense of responsibility and awareness for our environment. This can lead to other positive actions, such as recycling and reducing waste.In conclusion, turning off the lights in the classroomis a simple yet important action that we can all take to save energy, extend the lifespan of bulbs, and promote good habits. Let's all do our part to make our classrooms more environmentally friendly.中文：关灯是我们应该做的重要行动。

寝室熄灯制度是否必要英语作文范文模板The enforcement of dormitory lights-out policy has been a matter of debate among students and educators. While some advocate for the necessity of such regulations, others argue that they are outdated and unnecessary. This essay will delve into the reasons why a dormitory lights-out policy may or may not be essential.To begin with, proponents of the lights-out policy assert that it plays a crucial role in maintaining discipline and fostering a conducive environment for rest and study. By setting a specific time for lights to be turned off, students are encouraged to adhere to a consistent sleep schedule, which is believed to be beneficial for their overall health and well-being. Moreover, a regulatedlights-out time can help minimize disturbances in the dormitory, ensuring that students have a quiet and peaceful environment to focus on their academic pursuits.On the other hand, opponents of the dormitory lights-out policy argue that it infringes upon students' autonomy andfreedom to manage their own time. They contend that college students are mature enough to make responsible decisions regarding their sleep habits and study schedules. Enforcing a strict lights-out policy may create unnecessary tension between students and authorities, leading to a counterproductive learning environment.Furthermore, the effectiveness of a lights-out policy in improving academic performance is also a point of contention. While some believe that a regulated sleep schedule can enhance students' cognitive function and academic performance, others argue that individual differences in sleep patterns and preferences should be taken into account. For some students, studying late into the night may be more productive than adhering to a rigid lights-out schedule.In conclusion, the debate over the necessity of a dormitory lights-out policy continues to divide opinions among students and educators. While proponents emphasize the importance of discipline and a conducive study environment, opponents highlight the need to respect students' autonomyand individual differences. Ultimately, striking a balance between enforcing regulations and accommodating students' needs and preferences is essential in creating a harmonious and productive learning environment in dormitories.。

图书馆灯光缺点英语作文The Disadvantages of Library Lighting。

Introduction。

Lighting is an essential aspect of any library. It not only helps in creating a conducive environment for reading and studying but also plays a crucial role in enhancing the overall ambiance of the library. However, despite its numerous advantages, library lighting also has its fair share of disadvantages. In this essay, we will explore the drawbacks of library lighting and discuss how they can be addressed.Disadvantages of Library Lighting。

1. Glare。

One of the most common issues with library lighting is glare. Glare occurs when there is excessive contrastbetween light and dark areas, leading to discomfort and visual fatigue for library users. This can be particularly problematic for individuals with sensitive eyes or those who spend long hours in the library.2. Flicker。

神奇的作业灯是否该关掉辩论稿范文英文回答：Should the magical homework lamp be turned off? This is a question that has sparked a lively debate among students and educators alike. On one hand, some argue that the lamp is a valuable tool that enhances productivity and learning. On the other hand, others believe that it can be a distraction and hinder the development of important skills.Those in favor of keeping the lamp on argue that it provides a unique and motivating environment for doing homework. The lamp's soft glow and soothing ambiance create a cozy and inviting space, making it easier to concentrate and focus on tasks. Additionally, the lamp's magical powers can be seen as a source of inspiration and encouragement. For example, when faced with a difficult math problem, the lamp may suddenly light up, signaling that a solution is within reach. This can boost confidence and motivate students to persevere through challenges.Furthermore, the lamp's ability to provide instant feedback and assistance is seen as a valuable resource. It can quickly provide answers to questions, offer explanations, and even suggest alternative approaches to problem-solving. This can save time and frustration, allowing students to complete their assignments more efficiently. In this way, the lamp can be seen as a helpful companion, guiding students through their homework journey.On the other hand, opponents argue that the lamp can be a source of distraction. Its magical powers may tempt students to rely too heavily on its assistance, preventing them from developing important critical thinking and problem-solving skills. For instance, if the lamp always provides immediate answers, students may become dependent on it and struggle when faced with real-life situationsthat require independent thinking. Additionally, the lamp's enchanting glow may lull students into a false sense of security, causing them to procrastinate and leave their work until the last minute.Moreover, some argue that the lamp's magical abilities may not always be reliable. It may occasionally provide incorrect answers or suggestions, leading students astray. This can be detrimental to their learning and could potentially result in lower academic performance. Therefore, opponents believe that it is better to rely on traditional study methods and develop self-discipline and resilience.中文回答：神奇的作业灯是否该关掉？这是一个在学生和教育者之间引发了热烈辩论的问题。