加拿大论文代写-钙钛矿研究的讨论分析

加拿大论文代写-钙钛矿研究的讨论分析。日益增长的能源需求使人们寻求可再生能源的替代形式。太阳能和相关的基础设施被认为是化石燃料的一个很好的替代品。然而,这个能源系统也充满了问题,尤其是在使用的电池技术方面。本论文对钙钛矿细胞的稳定性进行了分析和评价。钙钛矿电池因其如何有效利用太阳能而得到广泛的研究。与现有的太阳能电池相比,这种电池本身产生的二氧化碳更少。现有的钙钛矿研究工作已经确定了许多稳定性问题,从结构、热、光子、化学等方面。本研究将利用这些问题中的一些,以了解钙钛矿如何能够在商业上先进,主要集中在化学和光子元素。解决这种不稳定性的方法将有助于实现大规模的电池商业化生产。因此,未来的研究方向将集中在如何解决长期稳定问题上。

Researchers in Australian National University have also worked on a similar productivity improvement perovskite. The ones that researchers have worked on would be such that they lead to an improvement of around 26 percent in efficiency in solar energy harnessing and conversions (Peleg, 2017b). This according to the researchers is a new world record when it comes to efficiency improvement. In the research, perovskite cells were used in conjunction with silicon solar cells, similar to the research conducted in Purdue University. The silicon cells are much more capable compared to the perovskite cells when it came to absorbing solar light. This means that when the perovskite was placed atop the silicon cells, then a very high voltage is generated here. This generation is seen to be a direct effect of the circumventing of the existing solar inefficiencies because of the use of one cell only (Meija et a., 2017). It is a low-cost alternative with which researchers believe they can achieve as much as 100 percent efficiency improvement. One hundred percent in energy improvement is something that is currently not feasible and at best efficiencies of around 20 percent are reported. The researchers here, aim to reach 30 percent of improvement in energy productivity and efficiency as a first stop and want to go beyond that (Peleg, 2017).
Research works in Korea have implemented a 12.2 percent efficiency improvement in perovskites. The Ulsan Institute of Science and Technology worked on perovskite cells and were able to implement cells with more than 21.2 percent in efficiency. The stability is also quite high, as a 93 percent performance was reported. This performance was recorded within a 1,000 hour of exposure to adequate sunlight and this is promising. A newer form of manufacturing of perovskites is also prepped at the moment in Korea. The UNIST University in Korea and the Korean Institute of Chemical Technology KRICT has come together into creating this newer manufacturing method. ‘Hot pressing’ as this method is called will improve usability of perovskites as it makes them more stable and much more energy efficient (Peleg, 2017).
In research done by the Northwestern University and the Argonne National Labs, it was identified that Perovskite’s life cycle assessment LCA showed that Perovskites had to be studied better before their use is tapped into. Compared to the existing solar cells, perovskites were seen to have a very shorter lifetime and more emission capability. This increases LCA concerns (Michaud, 2015).

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代写价格-在线旅行社的市场发展和变化

代写价格-在线旅行社的市场发展和变化。在过去的20年里,在线旅行社出现了,并且非常受欢迎。已经有很多公司在这些领域走在了前列,并建立了非常强大的市场地位。除了可以灵活地在任何地方进行预订外,这些旅行社还提供了巨大的预订节省。在线旅行社主要针对客户的期望和他们的愿望(Lindgardt et al, 2009)。这有助于他们维护高服务质量,并降低了总体的不确定性程度。因此,重要的是要满足顾客的愿望和期望,以确保有高的服务。

When there was a growing need for the growth of the online business for tourism, Thomas Cook widened its overall distribution through the online channel with the help of the online websites and the different call centres of the company. This helped in the development of the system which was perfect as per the behaviour of the customer. There was no need for following a fixed business model without any change. In addition to this, the company also did the number of changes in their overall infrastructure. With the change in the thought process of the customers, there had been a change in their pre-packaged vacations format (Sauto, 2015). The company made a change by making some of the new product offerings. This included the independent flights and the hotels for the convenience of the customers.
Thus, it can be said that though the company had earned a lot of success because of their long history of success and their business model, a large number of adjustments had been made in order to cope up with the different challenges of the industry and to live up to the changing expectations of the customers (Crouch & Ritchie, 1999). This was something that may not be possible with the help of the fixed business model.
Therefore, from the analysis, it can be found that business model cannot be implemented in the tourism industry because of the changing needs of the customer and also because of the change in the market. It can also be found that the company had also been impacted as a result of the technological, economical and the social changes. It is ascertain that the tourism industry is impacted more and more because of the change in the business environment rather than following a fixed business model. In case the company had been following a fixed business model, it could not live up to the time (Frey & George, 2010).

Thus, it can be concluded that the tourism industry is one of the most variable industries in the world. There are a number of changes in the industry on a consistent basis. In order to live up to the expectations of the customers and to implement the changes in the proper manner, it is important that the tourism companies are not dependent on the business model at all (Hart et al, 2011). It is important that the companies should working on making new and more feasible methods for the assistance of the customers and to ensure that they get the best environment at a good cost. In this report, the discussion has been focused on the tourism industry. There has been an analysis of the approaches which are used by the companies for the growth of the business and also for the enhancement of their own service quality. In order to provide real evidence, the business strategies which are implemented by Thomas cook (which is the traditional travel agency) and Expedia (which is the most popular online travel agency) has been studied and analyzed. From the studies, it has been found that there is a minimal requirement of the business model in the tourism industry. There has been a study on the business model and some literature evidences regarding the business models has also been analysed.

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代写论文-新西兰电子垃圾减少浪费的建议

代写论文-新西兰电子垃圾减少浪费的建议。随着技术以更快的速度发展,新西兰的老技术被抛弃了(Yeo et al., 2015)。进步的速度如此之快并不是国家的过错,而是由于没有采取措施。这些措施本可以帮助拯救国家及其周边地区(Petridis et al., 2016)。新西兰境内大多数冗余的电子工具正在填土。据统计,美国每年有3 -4亿电子垃圾被倾倒,只有20%或更少的电子垃圾能够达到回收利用的阶段(Farrelly et al., 2014)。尽管这8万吨垃圾只占新西兰垃圾填埋场总垃圾的2%,但产生的有毒垃圾却占了70%。《减少废物法》于2008年实施,并规定了管理产品,尽管这不是通过卫生部提供的(Herat et al., 2015)。然而,根据这项法案,回收作为一个过程已经在地方层面上进行了,部里和人们已经开始做出更大的努力,让电子垃圾远离垃圾填埋场。然而,浪费是如此之大,甚至这样的努力似乎都是浪费。

Zealand is to ensure that the lifespan of the products is enhanced.
The key to increasing the lifespan of the products is to reuse. Various older products have been exported to developing nations. Even though the advantages of electronic reuse in this manner are clearly depicted, the practice might result in causing serious issues as the older products being dumped after a shorter use period in regions might have no likeliness towards having lesser impact over environment. However, with increased lifespan, reuse becomes not only possible but also feasible (Yeo et al., 2015). For this, it is essential to develop reuse systems which are replicable, sustainable and consistent globally for the equipment’s from electronic and electrical background. If the PCs are in properly working situation, then one should not throw them away rather they need to be donated to schools or organizations that work within the education field. Prior to donation of the computer, it has to be ensured that the product can be reused. Organizations accepting donations have either no resources or limited ones (Robinson, 2009). They also do not have proper employees to understand the hardware and repair it. A system which is functional and working particular with regard to wiring, monitoring and licenses of software is of much use and needs lesser up-gradation than a computer which is non-working and not complete.
Another key recommendation is recycling. For this, it is required to enhance the infrastructures of global recycling, enhance the technologies as well as systems for realizing e-waste recycling systems sustainability with specific focus within developing nations. If the computers or other electronic equipment’s are completely non-functional, then it is better to give them back to the one manufacturing them. The electronics recycling will help in reduction of pollution which is generated when waste is generated while manufacturers can turn the old product into a newer one (Yeo et al., 2015). This also decreases natural resources based pressure by also reducing the energy utilized in manufacturing newer product.
Another essential recommendation is to consider building of capacity. The infrastructure development should be done in a way that it results in sustainability, efficiency, effectiveness and capacity building with target group orientation for increasing awareness over the growing problem of e-waste.

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