Views on Whether China will Lead Space Exploration - Free Essay Example

Sample details Pages: 2 Words: 511 Downloads: 5 Date added: 2019/07/01 Category Science Essay Level High school Tags: Space Exploration Essay Did you like this example? Launching the countrys first experimental space station, and building the Beidou navigation system, Chinas ambitious space program has made great progress in recent years. Surrounded by great triumphs, many Chinese people seem to have developed an illusion that their country is going to take the lead in space exploration. However, as the leader in space race, the US space industry is supported by the best science institutions in the world, and possesses technologies that is far beyond the Chinese space industry. Don’t waste time! Our writers will create an original "Views on Whether China will Lead Space Exploration" essay for you Create order This essay will make some comparisons between the space technology of China and the US, and clarify that China is far from ready to take over the position from the US in space exploration. First of all, we have to talk about the most fundamental technology required for sending satellites into orbit- rocket technology. Since the 1950s, America has developed five series of rockets. Among them, the commissioned Delta IV heavy is the most powerful rocket on the planet. It can carry 28.37 tons of loan to LEO (the low earth orbit). In China, the most often used LM IIs LEO capacity is only 8.8 tons, and the latest and most powerful Long March Vs LEO capacity is 25 tons. Although Delta IV heavy and LM V seems to be almost equally powerful, the status of LM5 is presently very unstable-one failure in two flight, the success rate is only 50%. Also, the first launched of LM5 in 2016 is 12 years later than Deltas. Moreover, US company SpaceX has developed mature technology of reusable rocket. Not only did they manage to cut down the cost of launching by 30%, they made it possible to get a rocket ready for a higher launching frequency. As we can see, although we cheerfully celebrate for Chinese rocket advancement, the US is already far ahead. The mission of the rocket ends quickly after the launching, and the rest of the exploration is handed over to various kinds of satellites. Although Chinese space station and moon rover has caught the attention of the world, China barely has any satellites launched for scientific purpose. Most of the satellites are launched to show the power of the nation. But when we take a look at the US, we can see that its satellites are voyaging across the solar system, and almost every knowledge that we have of the outer space is provided by US scientific satellites. Instead of showing off power, they are used to support advanced theories, and push human knowledge forward. Obviously, thats what space exploration should concentrate on, and China seems to be a little bit off track. In conclusion, although Chinese space technology has had tremendous improvement, its still too arrogant to say that we are surpassing the US. There are still many new technologies to develop and many years to go. Only by acknowledging our real position, instead of living in imaginary circumstances, can we recognize ourselves and go further. Reference List: 1.https://www.spacex.com/about/capabilities 2.https://www.cnsa.gov.cn/n6758824/n6759008/n6759012/index.html 3.https://www.nasa.gov/ 4.https://www.space.com/40360-delta-iv-heavy.html

General Approaches For Feature Selection - 1468 Words

General Approaches for Feature Selection There are 3 types of approaches for feature selection namely filter, wrapper, embedded method. Filter method: Filter method does not involve a learning algorithm for measuring feature subset [6]. It is fast and efficient for computation .filter method can fail to select the feature that are not beneficial by themselves but can be very beneficial when unite with others. Filter method evaluates the feature by giving ranks to their evaluation value. In filter method it evaluates the correlation between the features by using criteria such as, mutual information, maximum length, maximum relevance min redundancy (mRMR), PCA. Figure 1.2 Filter approach Wrapper method: wrapper method involve learning algorithm and search for optimal feature subset from original feature set which discover the relationship between relevance and optimal subset selection. It performed better than the filter method. The specific training classifier is used to evaluate the performance of selected features. Figure 1.3 Wrapper approach Embedded method: Embedded method is a combination of wrapper method and embedded method. This decreases the computational cost than wrapper approach and captures feature dependencies. It searches locally for features that allow better discrimination and also the relationship between the input feature and the targeted feature. It involves the learning algorithm which is used to select optimal subset amongShow MoreRelatedExploring Affinity Propagation1006 Words   |  4 PagesTraditional approaches for clustering data are based on metric resemblances, i.e., nonnegative, symmetric and filling the triangle disparity measures. More recent approaches, like Affinity Propagation (AP) algorithm can take as input also general non metric similarities. AP can use as input metric selected segments of images’ pairs. 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Resilience Problem Solving and Child Free Essays

Explain why resilience is so important CYP 3. 3 6. 2 SCMP2 1. We will write a custom essay sample on Resilience: Problem Solving and Child or any similar topic only for you Order Now 3 CYP 3. 3 6. 1 CYP 3. 3 6. 4 CYP 3. 3 6. 3 What is resilience? Resilience is the ability to adapt to adversity and cope with living in spite of stresses. Building resilience is building the ability to bounce back and adapt to all kinds of adversity, including trauma, tragedy, threats, setbacks and stress. Children at some time in their lives will experience stress and trauma, but by building resilience, children are better able to manage stress and feelings of anxiety and uncertainty. Resilience is important because it is the human capacity to face, overcome and be strengthened or even transformed by the adversities of life. And adversity affects us all at some time in our lives. Resilient children: find ways to solve their problems xercise control over negative thoughts and take responsibility for choosing how to act and feel are more likely to have people to talk to and confide in when something worries them have inner strength, social and inter-personal skills, and skills in communicating effectively require parents and carers to model resilient behaviours and help promote resilience through words, actions and the environment, in which they are being raised like to try new things, enjoy a challenge need supervision, support and boundaries feel they can succeed ersist with a task an d persevere have a sense of optimism believe their contribution can make a difference to an outcome like helping people possess a sense of fun. Ways we can raise a childs’ confidence, resilience and well-being Resilience draws on aspects of a child’s characteristics including temperament and the environment in which they are raised and supported. It also includes people and opportunities that help build resilience, for  example independence, autonomy and problem solving. Strategies for building resilience can be learned over time. Learning to think positively and in perspective means a child can not only cope with problems and setbacks. It also means children have opportunities to learn how to build strengths that protect and promote well-being. To overcome adversity and build resilience, children ideally require: unconditional love and acceptance some autonomy over their lives trusting relationships with significant adults feelings of independence secure relationships and strong role models to help foster friendships and commitment a safe and stable environment self-confidence and faith in themselves and their world. All these things help to build resilience. Helping to promote resilience A child’s ability to build resilience is dependent on their age and stage of development. Babies and toddlers have limited physical and emotional competence compared with eight-year old. However, helping a child to feel secure and confident can begin at birth. For babies and toddlers: Provide safety, security, stability and nurture–physically, verbally and emotionally. Rock, stroke, soothe and cuddle often. Use words of comfort to calm. Allow babies freedom to explore in safety. Encourage toddlers to calm themselves. Model optimistic and resilient behaviour. Talk with toddlers and preschoolers about what adversity and setbacks mean. Reinforce a child’s faith in their own problem solving skills. Set limits for behaviour and label the behaviour, not the child. Offer explanations regarding rules and discipline. Praise the accomplishment of tasks and milestones. Encourage independence. Help your child to recognise feelings and develop language to express emotions. Build on the security of trusted relationships. Source appropriate picture books from your local library. Know and work with your child’s temperament. Help your child stick to a daily routine. For preschoolers and older children: Give unconditional support, nurturing and encouragement. Encourage and help your child practise calming strategies. Model self-esteem, confidence and optimism. Talk about appropriate behaviours. Encourage independent thought and action. Build on developing an emotional vocabulary and how to label feelings. Help your child to understand their own temperament and why they might react in a certain way to a particular situation. Practise effective ways to resolve conflict at school or in the playground. Talk about ways that a child can seek help and assistance if needed. Spend time every day talking, discussing and sharing what’s happening in your child’s life. Model and teach attitudes of empathy and ways of caring. Explain that all behaviour has consequences. Provide comfort in stressful situations. Praise completed tasks, work well done, perseverance, desired behaviours. Discuss accepting responsibility for behaviour and why discipline is imposed to limit some behaviours. Clarify expectations, rules and regulations (especially for school). Accept that failure happens and talk about ways your child can overcome feelings of failure and try again. Discuss and support emerging independence and autonomy as your child develops, and how this balances out with age-appropriate limitations. Be flexible with routines so that your child has time and opportunity to be creative. Teach your child how to focus on something else if they are worried or upset. Discuss what it means to be a friend and help your child to make friends. Explain the importance of eating properly, resting, exercising and self care. Help your child to see that their individual accomplishments contribute to the well-being of the family as a whole. Why is important to teach them skills to keep them safe? Resilience is coping with change, and for many young children change can be stressful and scary. Helping a child to keep things in perspective and understand why change is an inevitable part of life, will help them to navigate and bounce back from tough times and move forward to better times. Wherever possible, ensure that children have unconditional support and stability from their family or caring network. How to cite Resilience: Problem Solving and Child, Papers