The aim of my experiment Essay Example for Free

The aim of my experiment Essay Evaluation Although I feel that my experiment was sound overall, I thought there were many points at which the accuracy was not perfect. As I have already stated, my preliminary experiment was not accurate enough to justify being used as my main experiment, mostly due to the fact that I was relying on all the bubbles being the same size, which they clearly werent, however many of the smaller inaccuracies also apply to my main experiment. Firstly, the distance between the light sources and the Canadian Pondweed were not measured to a very high degree of accuracy, especially when you note the fact that the distance should have been measured exactly from the filament of the light bulb to the centre of the plant, and it is possible here to find a percentage error. I estimate that the error could have been up to 0. 5cm and I will find the percentage error for the largest and smallest reading using this estimate: Percentage error = possible inaccuracy total reading % error distance 10 5cm 1 50cm It is clear to see that the percentage error is much less for the larger distances. Although I was not actually using the distances as part of my results, I used them as a marker for where the lamp was placed each time, as I assumed that the light intensity would be the same each time at a particular distance. Therefore, any inaccuracies in measuring the distances, i. e. if a distance was slightly different when doing the actual experiment from the distance at which I earlier measured the light intensity, an error would ensue. The second major inaccuracy was in measuring the volume of oxygen given off. When reading the syringe there could have been an error of 0.25mm, and again it is possible to find a percentage error. % error volume 3. 57 7ml 50 0. 5ml For the smallest volumes this is clearly a massive error, and to improve this, it would be necessary to do the readings over a longer period of time, therefore increasing the volumes, and in turn reducing the percentage errors. Another error would have been due to background light in the vicinity. We tried to reduce this error by closing all blinds in the laboratory, but due to practical reasons, we could not all perform the experiment in a separate room, and we therefore experienced light pollution from other students experiments. This would have had a very marginal effect on my results as a whole, but to eliminate this problem completely, it would have been necessary to perform the experiment in a totally dark room. A further inaccuracy was in the heat generated by the lamp. As I have earlier described, temperature has a very noticeable effect on the rate of photosynthesis, and so any increase in the temperature of the pond water would have had serious effects on the accuracy of my results. To ensure this did not happen, I monitored the temperature of the water before and after every reading, to check that the temperature did in fact not rise. It turned out not to be a problem, as over the short period of time taken by my experimental readings, the temperature did not rise at all. However, if I were to extend the time of my experiment to 5 minutes for each reading for example, which would have the effect of reducing other percentage errors, I would have to find some way of keeping the temperature constant. One way of doing this would be to place a perspex block between the lamp and the plant, which would absorb most of the heat, while allowing the light energy to pass through. As I mentioned in my planning, carbon dioxide concentration could have been an error in the experiment, however, I feel that due to the short period of time taken, there is very little chance that the concentration would ever have been so low as to have become the limiting factor. Again if I were to carry out the experiment over a longer time period, it would have been necessary to add sodium hydrogen carbonate to the water to increase the carbon dioxide concentrations. The last inaccuracy, though a small one, was in the time keeping. The main problem here was in when to begin the minute. If for one reading, the minute was started just after one bubble had been produced, and in another reading it was just before, this could have had a negative effect on the accuracy of my results. I therefore ensured that in each case I started the stopwatch just after a bubble had been produced, thus heightening the accuracy. Overall, I felt that due to the small volumes of oxygen involved, my experiment was not as accurate as it could have been, however I believe it was accurate enough to support and justify my hypotheses. Improvements could have been made as I have stated, mainly by simply increasing the time taken. However, due to practical time constraints in taking the readings for my investigation, and some consequential problems relating to time extension, I could not in fact make these adjustments. The other obvious way of increasing the reliability of my results would be to take many repeat readings and find an average. To extend my enquiries into the rate of photosynthesis, I could perhaps try to link in some of the other limiting factors to the same experiment, as well as investigating them in their own right. It could also be interesting to explore the effects of coloured lights on the rate of photosynthesis, which could lead to the question of whether or not other types of light, such as fluorescent lights or halogen lights, would have a different effect on the rate of photosynthesis.

A Career in Education Essay -- career essays

A career in education can be a rewarding yet challenging field. Becoming a teacher is a unique career in which there will be various titles, from being a communicator, social worker, disciplinarian, evaluator, role model, and at times a parent. Being able to change the lives and mold minds of young children is something I have always wanted to do. Throughout my research and personal interview, I have discovered what my salary will be like, the lifestyle impact, future projections, and the credential requirements needed to accomplish becoming an educator. The requirements for becoming an educator vary from state to state because each state has its own set of rules when it comes to their educators. For example, Wisconsin requires that their educators have a Bachelor’s degree, pass the Praxis II exam and the edTPA (Teacher Performance Assessment) and that they know how to communicate, have knowledge of what they are teaching, understand different learning styles, children’s growth, know how to evaluate, manage a classroom and plan lessons (Teacher Education, Professional Development & Licensing). For UWM graduation requirements, I must complete a human relations class so that I know how to understand different cultures and how to communicate with different types of people. I also must have credits in fine arts, social sciences, and natural sciences; a minimum cumulative GPA of 2.75 in all professional education coursework, a full day/semester during the final year of the program for field experience, and earn a C or bette r in student teaching to be eligible (Academic Programs). According to the Bureau of Labor Statistics, the future employment projection for educators is expected to grow 17% from 2010 to 2020 simply because of... ...th long working hours teachers deal with a lot of emotional and physical stress; dealing with parents, administrators and behavioral issues, educators have to keep personal and emotional reactions separate from their professional reactions, when it comes to dealing with behavior issues in the classrooms and also dealing with difficult parents; learning how to cope and deal with tension and even sometimes hostile environments are all a part of being a teacher. Dealing with superiors is also stressful for teachers because although as an educator our job is to evaluate students, teachers also are evaluated themselves, and evaluations can heavily determine if they will continue to have a job in that specific school (Robin Grusko and Judy Kramer). Although there are beautiful and rewarding things that come with being a teacher, the personal life can be challenging.

Alfred Lubrano How College Corrupts

Alfred Lubrano How College Corrupts BY robn215 College is the next stepping stone to better or advance ones social standing in life, whether it is moving from a blue collar lifestyle to white collar, or to continue to further their career path. However, it comes with an â€Å"unavoidable result. † Alfred Lubrano discusses this â€Å"unavoidable result† in his text â€Å"The Shock of Education: How College Corrupts. † Lubrano discusses the topic of how furthering ones education opens more possibilities but at the same time distances those held most dearly.He explains that the more knowledge gained, the bigger the gap caused between friends and family due to differences in levels of knowledge. That distance is greatly increase if one comes from a poorer region where blue collar workers are the social norm. For instance, conversations within lower class households come off more militaristic due to the fact that all opinions are â€Å"dictated by group consensus,â⠂¬  where what the class says is so. Juxtaposed to the middle class household where they are talked to as adults..Lubrano does not try to dissuade one from attending college, he simply shines a light onto a hidden matter that is not discussed when continuing ones education. Lubrano hits the nail on the head about the distance gained when continuing ones education with friends and family, but does not consider the fact about that distance being magnified as a first generation American. One of Alfred Lubrano's main points was how college distanced childhood friends as well as loved ones.He describes how he learned to â€Å"self-censor† himself nd only discussed â€Å"general stuff,† because it was undiscerning to his father, a blue collar working man. Not to mention that listening to a freshman discuss the topics of race, equality, or politics, was as unsettling as â€Å"riding in a car with a new driver. † In fact, Lubrano's professor himself told his class not to discuss what they have learned in class, Marxist theory, because it would â€Å"mess up the holiday. † Under those circumstances, one can only imagine the distance lost trying to elaborate the topics discussed.Lubrano does an excellent Job of demonstrating the distance gained from the sheer fact of furthering ones education but does not consider the aloofness of first generation students trying to advance their educational life. I am a first generation college student and my parents were nothing but proud of me when I talked to them about continuing my education, as a matter of fact, they even bragged about it to other family members as well as bought me new items for school, clothes, shoes, and a laptop.But, neither they nor I was prepared for the detachment that as brought upon by trying to further ones education. During my first year of college I was exposed to the lifestyle of being completely â€Å"free. † I had attended Penn State University, which is about fo ur and a half hours away from Philadelphia, and during that time I had become wild and rambunctious. This was mainly due to the fact that within Asian households, the children are raised and taught in a completely different manner than an American household even though I was born and raised in Philadelphia.However, I was raised both by Vietnamese standards of discipline and espect without questioning authority, whilst also being raised on American standards of critical thinking and questioning everything. As you can tell those two standards of living are not exactly compatible. So, when college presented itself with the opportunity ot finding oneselt, I indulged As a consequence ot turtnering my education, I had lost some of my Asian roots and as you can tell; when I returned home I was not the same person. I was a smarmy freshman with a year of college under my belt with the mindset of being a completely independent adult.Causing omplications within my family and distancing ourselv es from one another. It was even more difficult because I could not discuss exactly what was affecting my relationship with my parents due to a language barrier. Granted, I did know how to speak to them in Vietnamese, but not without struggle. This due to the fact that as a child, I was more interested in watching Saturday morning cartoons than talking to my family. Alfred Lubrano does a good Job of describing exactly how furthering ones education causes a divide between friends and family.For example, he had to â€Å"self- ensor† his thoughts and separates which topics he talked about in order to not upset his family. However, he does not discuss the topic of how being a first generation college student can cause an even bigger divide between family due to different cultural beliefs and the language barrier. Again, Alfred Lubrano does not try to dissuade one from continuing ones education whatsoever, in fact he encourages it. Lubrano Just tries to expose a hidden agenda that most people do not discuss about, and that is how college causes a divide between family and friends.

##txt A Comparison Of Facebooks Deeptext - 982 Words

Facebook’s DeepText is a close resemblance of Google’s NMT(Neural Machine Translation). Neural Machine Translation (NMT) is an end-to-end learning approach for automated translation, with the potential to overcome many of the weaknesses of conventional phrase-based translation systems. Unfortunately, NMT systems are known to be computationally expensive both in training and in translation inference – sometimes prohibitively so in the case of very large data sets and large models. Several authors have also charged that NMT systems lack robustness, particularly when input sentences contain rare words. These issues have hindered NMT’s use in practical deployments and services, where both accuracy and speed are essential. In this work, we†¦show more content†¦In practice, however, NMT systems used to be worse in accuracy than phrase-based translation systems, especially when training on very large-scale datasets as used for the very best publicly ava ilable translation systems. Three inherent weaknesses of Neural Machine Translation are responsible for this gap: its slower training and inference speed, ineffectiveness in dealing with rare words, and sometimes failure to translate all words in the source sentence. Firstly, it generally takes a considerable amount of time and computational resources to train an NMT system on a large-scale translation dataset, thus slowing the rate of experimental turnaround time and innovation. For inference they are generally much slower than phrase-based systems due to the large number of parameters used. The model architecture of GNMT, Google’s Neural Machine Translation system. On the left is the encoder network, on the right is the decoder network, in the middle is the attention module. The bottom encoder layer is bi-directional: the pink nodes gather information from left to right while the green nodes gather information from right to left. The other layers of the encoder are uni-directional. Residual connections start from the layer third from the bottom in the encoder and decoder. The model is partitioned into multiple GPUs to speed up training. In