Thursday, October 17, 2019
Scientific Misconduct Essay Example | Topics and Well Written Essays - 500 words
Scientific Misconduct - Essay Example Misconduct in the scientific research totally damages the good will of any research that has been. This has greatly ruined the scientific advancement and the professional success in the field of science and research. The wrong doers are prone to heavy penalties if found guilty and may be sanction and even serve jail term as the law indicates. The misconduct represents itself in many forms, (Dââ¬â¢angelo p 86). These can be seen from the journals, scientific press and the many institutions accredited to the scientific research. There have been many paradigm theories and ways on how to investigate, who to investigate and the legal actions for anyone found guilty of the scientific misconduct. There has been cleavage as to who to determine this egregious fakery, duplication and even plagiarism the field of science. This paper reworks on the areas that can be useful in determination of the culprits. The political and cultural environment was the first to raise the red flag. The context here is that Americans have over time held the scientist, as people of high caliber, with vast knowledge that do offer solutions. Economically and socially they are valued as people of great importance, (Dââ¬â¢angelo p 77). Any tempest in the field of scientific research would bring our economy on its knees. There has to be a lot of care and due diligence that needs to be put in place to main stability in this field. Integrity in the field of science must be upheld. The research has to give credible results that hold water at the end of the day. Failure to provide this vital component would lead as a total violation of the laid out procedures and this will be termed as scientific misconduct. This integrity issue has to be encouraged and motivated to give yields to the multinational credible research institutes, (Dââ¬â¢angelo p 98). Congressional attention to have a detailed report in scientific
Do you think that Mr. Champlin should have consulted with the Navy Essay
Do you think that Mr. Champlin should have consulted with the Navy before spending his time and money on this project - Essay Example Navy irrespective of whether they were lost or considered abandoned in U.S., foreign or international waters. These guidelines are based on the US Constitutional and international maritime laws and the ownership is consistent with Articles 95 and 96 of the Laws of the Sea Convention. These articles delineate the terms of immunity of warships in international waters. Additionally, the statutes as they stand with regards to federal property dictate that all lost or presumed abandoned ships and aircrafts should not be disturbed or removed without a formal application and approval of said application before the property is moved. Operating under this tenet, the actions of Mr. Champlin proved to be in violation of the law. Essentially, he was ignorant of the law but this does not relive any responsibility for its compliance. I find it presumptuous of Mr. Champlin to ask for a refund when he blatantly violated several statutes with regards to presumably abandoned governmental property. I feel that Mr. Champlin should make it his business to be appraised with regards to the special rules of federal property especially in light of the fact that he intended to gain possession of it.
Wednesday, October 16, 2019
N&S Finance Essay Example | Topics and Well Written Essays - 1000 words
N&S Finance - Essay Example Quick ratio Quick ratio, just as current ratio, is a measure of the companyââ¬â¢s liquidity level, only that Quick ratio excludes inventory. This ratio is significantly below the current ratio, which could be an indication that the company is maintaining a high level of inventory. In case the companyââ¬â¢s inventory is not easily convertible into liquid cash, then its financial position is at crossroads because it may experience difficulties paying its short-term creditors. The management should also consider whether the company is experiencing sales difficulties because that could be the reason why its inventory level is quite high. If this is the case, strategies should be crafted to increase conversion of inventory into cash so the liquidity could get better. Nonetheless, the positive increase from 0.83 to 0.95 is remarkable and if this trend continues, the company will not have liquidity problems. Accounts receivable turnover This ratio also shows the companyââ¬â¢s liqui dity level. It is a strong indicator of how the management has efficiently employed the accounts receivable. A ratio of 6.63 in 2009 is remarkably big, meaning that collection of accounts receivable and extension of credit to customers was operated efficiently. Alternatively, this may indicate that the company operated, chiefly, on cash basis. The drastic fall of the ratio in 2010 could send alarm signals to the management that something is wrong especially if this sale is not as a result of a shift from cash sales to credit sales. For instance, this could imply that the debtors are servicing their dues very slowly or even defaulting. Average Collection period Average collection period reflects the period that it takes for the company to receive its accounts receivables. The 53.03 days for 2009 is an ideal period because the company will be assured of conversion of its receivables into cash in less time and use the money to pay its bills. However, 214.38 days for 2010 is very high, and this means that the company may be headed for liquidity problems as a result of customers delaying or defaulting on their dues. This, in turn, will cause cash shortage and hence the company may not be able to meet its administrative and operating expenses. The management should revise its debt collection policies to avoid experiencing liquidity problems. Inventory turnover The inventory turnover for 2009 is 6.5 times, but this reduced to 3.96 times in 2010. This implies that the companyââ¬â¢s sales have started moving slowly, which is discouraging because this will most likely affect the profits directly. This, however, could be a sign that the company is increasing its inventory. Decline in inventory turnover will result to cash shortage and hence this trend should be averted. Total asset turnover Total asset turnover indicates how the management has invested the assets to generate revenue. The higher the ratio the better because it shows that the assets are applied more eff iciently. Reduction of this ratio from 0.93 in 2009 to 0.71 in 2010 is a cause for alarm because it indicates that the companyââ¬â¢s assets are used less effectively, to generating income. The management should seek ways of boosting sales to ensure this ratio is restored to an optimum level. Debt to total assets Debt to total assets shows the companyââ¬â¢s financial leverage, by revealing the proportion of the total assets that are funded by debt. In 2009, 47.14% of the assets were financed by creditors
Do you think that Mr. Champlin should have consulted with the Navy Essay
Do you think that Mr. Champlin should have consulted with the Navy before spending his time and money on this project - Essay Example Navy irrespective of whether they were lost or considered abandoned in U.S., foreign or international waters. These guidelines are based on the US Constitutional and international maritime laws and the ownership is consistent with Articles 95 and 96 of the Laws of the Sea Convention. These articles delineate the terms of immunity of warships in international waters. Additionally, the statutes as they stand with regards to federal property dictate that all lost or presumed abandoned ships and aircrafts should not be disturbed or removed without a formal application and approval of said application before the property is moved. Operating under this tenet, the actions of Mr. Champlin proved to be in violation of the law. Essentially, he was ignorant of the law but this does not relive any responsibility for its compliance. I find it presumptuous of Mr. Champlin to ask for a refund when he blatantly violated several statutes with regards to presumably abandoned governmental property. I feel that Mr. Champlin should make it his business to be appraised with regards to the special rules of federal property especially in light of the fact that he intended to gain possession of it.
Tuesday, October 15, 2019
The Influence of Culture on Language Essay Example for Free
The Influence of Culture on Language Essay In this movies, I can find a lot of concepts that we have been studied in this four chapter. Although I mostly disagree the main idea of this movie, I think it is fight for survive and there are not clear justice, I admit it is a good movie to study intercultural communication. After watching this movie, I first think about the Identity. Identities are sets of social expectation related to ourselves and others that are grounded in the interplay between similarities and difference and pertain to personal, relational and communal aspects of lives. As you can see from the opening scene when the general hope the Lieutenant Jim to fight for human, even he make him to choose between his brother life or Mala. A role is something one puts on and takes off depending on the needs of the situation. In this situation, the general expected the Lieutenant Jim to fight for him but not for parliament, because he think Jim is a human and soldier, he could not fight for Terrian. It is a role expectation. I also find the communications relationship to identity in this movie and it is Ironically. When the soldiers find the Mala in their Ark, they first thought is she will destroy Ark, they should catch her as soon as possible. Such identity label always take this common idea that Mala is not human, she must in order to destroy to come the Ark. The communication naturally reflects her identities, also her identities will common reflect what she will doing. But ironically, who arrest human to capture the planet uncompromising is not Mala, but Lieutenant Jim, also a human. It is no doubt to find the movie is most to focus on personal identity. The movie highly praise the personal identity has special power to solve the conflicts between relational identity and communal identity. As a human, he has a communal identity. But he also has a relational identity that he is a friend of Mala. During the battle, he want to save his brother and also do not want to hurt Mala, at this time, he did another choice. At last, there a scene shows a big sculpture about Lieutenant Jim. Heroism most present a personal identity. In the movie, I find another conflict about the worldview. What is our relationship with the nature, mastery or adaptive. The general certainly stand for mastery the world. He want to capture the planet and change the world to another earth. Human is mostly like to mastery the world. We can find at the movie stated, it is because of absolute mastery the nature, we are ver-exploitation, destroy the nature and fight each other that lead to lose our world. But the parliament seems to change. It is more like Terrian to adaptive the world. They stand to share the world and lend into the environment. At this point, we can find another concept which we study in this for chapter is Similarities and Differences. So when we discuss the culture, we could not be overgeneralization. Back to the worldview, we find the Terrians world view is more in accordance with that current environmental protection organization advocated. At this view, I really love to adapt the world or not to master it. But at last, I mostly find that human is more like to make a big cage to close ourselves. I thought the author is rather extreme. At last, I think to study a intercultural communication in a movie is a meaningful and interesting. But maybe it is a little exaggeration, because the movie always take some authors personal value in it.
Monday, October 14, 2019
Evaluation of Balancing Circuits Used in Battery System
Evaluation of Balancing Circuits Used in Battery System CAREER EPISODE 2 2.1 INTRODUCTION My second career episode describes my project that is called Evaluation of balancing circuits used in battery system. This project was completed as a part of my minor thesis in the fulfilment of my masters degree program from Swinburne University of Technology, Australia in December 2016. I completed my masters degree in electrical and electronics engineering science. It was completed under the supervision of Prof. Weixing Shen, senior lecturer at the university. And was also supported by Prof. George Banky. 2.2 BACKGROUND Electric vehicle which operates on battery doesnt operate on a single battery as sufficient energy is not supplied through it. Thus, many batteries that are either connected in series or parallel are required for the generation of required voltage and current for the system to function. The difference in the cell voltage of the stack reduces the string capacity and hence a system is required that will be able to achieve and maintain the voltage and current that is required by the system along with considering the issue of reliability and performance. For this purpose, a BMS is used. Battery Management System (BMS), which can oversee the voltage and the current level and can also charge the battery. 2.3 The main aim and goal behind implementing this project was to design a 48V battery stack power system that consists of 12 lithium ion battery cells. The monitoring and supervision of each cell operation and voltage level and its charging status can be done with the help of LTC3300-1/LTC6803-2 bidirectional cell balancer along with the BMS system. It also considers the safety concern of the batteries that are used. And the other objective behind implementing this project was to understand LTC330-1/LTC6803-2 bidirectional cell balance kits performance along with checking its results based on QuikEval software and DC590B USB serial controller when connected to the computer. 2.4 The idea is to balance the voltage supply of the cells so that it provides constant battery voltage to the shelter of the electric vehicle. The overcharging of the battery results in voltage battery degradation and can have consequences like it may catch fire or explosion. Whereas undercharging of the cell or having voltage under the required level may affect the life of the cells. So, I have made use of lithium ion batteries which are then further connected to LTC3300-1/LTC6803-2 bidirectional cell balancer that would assist in achieving the required voltage level of the cell and it can also help in increasing the life of the cell or battery long with providing the supply voltage of EV. 2.5 The project was completed in a group of two. And I took the opportunity to become the team leader. I first involved with my supervisor in planning the topic and how to start working on the project. Based on that I prepared a flow chart in which all the major task was divided and assigned among team member along with a deadline so that the final project gets completed in time and there will be time for troubleshooting. After deciding the topic and assigning task, I made myself busy with researching and with literature review of the topic by referring various journal, books, and internet material. The later part was designing and implementing the hardware structure along with its software part for its functioning. I had to weekly report to the Professor about my project update and took feedback on my project which helped me improve a lot. Weekly meetings with the supervisor was either done through emails or small presentations. 2.6 PERSONAL ENGINEERING ACTIVITY I started my project with literature review on cell balancing where cell balancing is a process that involves adjusting the cell voltages to same level i.e. where the battery cells are not over charged or over discharged. Also, its internal parameters are the reason for its unbalance like its time of manufacturing, internal resistance etc. It also depends on some of the external resources like thermal difference between battery cells. The process of battery balancing in lithium ion batteries is an easy process due to its property of charge-discharge capability. It also provides increased life span and the right voltage for its application. After understanding the concepts that were going to be used in my project I started performing research on the components that could be used for my system. It took lot of survey and suggestions were taken from seniors and lecturer about it. and later I finalized the following hardware components that suited best for the project. 2.7 1. Lithium ion (Li-ion) batteries this battery was used due to its high-energy efficiency and has relatively longer battery cycle life which is an important feature for my system as the electric vehicle requires battery than can store more as well as can frequently recharge. Basically, there are two parameters that affect the overall performance of the battery. They are power and the battery diving range. 2. LTC3300-1/LTC6803-2 bidirectional cell balancer à for cell balancing and monitoring purpose I made use of two ICs that are functioning as bidirectional cell balancer. Active balancing principle is used by BMS. The two ICs are LTC3300-1, which can balance 6 cells whereas the LTC6803-2 microcontroller IC can support 12 cells when connected to each other in series connection. The function of LTC3300-1 is to equalize the SoC i.e. state of charge when the battery modules are connected in series manner. It can charge the battery stack faster and extent the runtime and enhancing the overall performance by cell balancing and charging. Moreover, this IC can balance 6 cells connected to each other in series when it functions as transformer based on bidirectional active balancing system that has synchronous fly back topology. Looking at the other IC i.e. LTC6803-2 is also a microcontroller IC that can support up-to 12 batteries connected in series connection. It uses different chemical ma terial than the other IC for monitoring the batteries. It gives more accurate results and low error rate, as low as 0.25% of total. It generally operates in three modes: measure, shutdown and standby. 3. DC590B USB serial controller it is a kind of controller that is specially designed using QuikEval software for display and demonstration of the results and for technologies involving linear family circuits. It is a controller that is based on USB. It is generally isolated or separate from the host computer. So therefore, no external or additional power supply is needed to drive the controller. 4. Power supply GPS18500 instrument is one of a kind device which is used in my system as for this project a DC power supply of +5V is required externally to drive the unit. This power supply has many different configurations that include variable voltage and fixed voltage. It has the feature of supplying 2 different power supply which can work and be used independently. In this device, a slot that gives out fixed supply of +5V DC is provided to the LTC3300-1 bidirectional PCB. 2.8 After having finalized the hardware components, they were implemented on the evaluation board. The diagram attached shows the circuit and hardware connection for this project. It can be observed that a DC2064A GUI evaluation board, 14 conductor ribbon cables, computer that has QuikEval software installed and USB/serial port cable along with DB590B USB series controller is been used and a power supply of +5V is supplied externally using the GPS18500 device discussed earlier. Various precaution and safety measure was considered while connecting all the different components to the evaluation board. This was done precisely and carefully as any wrong connection made, it can damage the whole circuitry and the cost of application will increase indirectly. The two ICs LTC3300-1 and LTC6803-2 are soldered or wired to the evaluation board DC2064A GUI along with the capacitors, MOSFET and transformers. The voltage level and the temperate can be monitored with this circuit board and has the capability to balance the cell voltage. This board also has a special feature of advance fault detector that helps to secure the performance of the board in case of any spark or short circuit. 3.7V and 2600mAH configured lithium ion battery is used in my system. Thus 6 batteries giving a output voltage of 22.8V when connected in series are used on the board as the board can withstand a maximum of 12 batteries for balancing. 2.9 After successful implementation of the hardware, testing and trouble shooting was performed. For that a QuikEval software was used to monitor the battery stack. To use the software, it had to be configured accordingly for both the microcontroller ICs that were used in the system. After proper implementation, the screen looked as below. From that it can be depicted that the when we press the button called START CONTINUES READ CELL, voltage level can be retained and measured from each battery connected in the battery stack. From performing the test run, I found the cell voltage for each cell was almost 3.7V. But if there is any minor change in the voltage level of any cell it can be equalized by transferring cell voltage manually for 5sec and charge the required cell by discharging other cells with high voltage to get an equilibrium stage. All the charging/discharging or any error situation status can be seen on the screen as that status will be highlighted. 2.10 The struggle in implementing this project was getting the expected outcome. It different the actual outcome. It took many efforts, there were issues like the hardware didnt receive any signals from the software. The problem was solved by reconnecting few hardware wires. Also, it required changing the voltage level of the components by choosing higher level components. After the final configuration, the hardware received the signal and the voltage level of each cells were determined. The later challenge was the important task and the main idea of our project i.e. cell balancing by voltage levels. The output was taken and written down at each time for charging/discharging function and the experiment was carried out until the satisfied result was attained. There were times when I didnt get the desired result even after performing the experiment several times. During this phase, my faculty members and supervisors helped me a lot and gave me steps or hints on how I can solve the error. 2.11 SUMMARY To conclude, my project used 3.7V lithium ion battery that has 2600mAH of capacity for active cell balancing technique while making use of two microcontroller ICs configured on evaluation board. The transfer of charging from one cell to another is done using the six lithium ion batteries that are connected in series on the evaluation board. Along with that the software QuikEval was used to trace the output. The project has an open window in terms for expansion for future project work based on this system. This project can be used for self-controlling function to detect faulty or imbalance situation in the system along with capability for temperature measurement unit. Though I could only achieve partial results from my experiment as it varied from expected outcome. But this experiment helped me in many other ways. It taught me to handle complex circuits and outcomes, though I didnt partially achieve what I expected from this but it gave me the strength and knowledge on how to overcome such situations. It was a new learning experience by working in groups and team mates. It involved managing different views and coming to one conclusion before implementing the idea. Also, I had the opportunity to apply my previous engineering knowledge into this project.
Sunday, October 13, 2019
Comparing the Rights of the Individual in Handmaids Tale and Invisible Man :: comparison compare contrast essays
Rights of the Individual in Handmaid's Taleà and Invisible Man à The Handmaid's Tale, by Margaret Atwood, and Invisible Man, by Ralph Ellison, are two novels which use an essentially "invisible" central character to comment on the manipulative power society holds over people, destroying the individual. Offred, the protagonist of The Handmaid's Tale, and the narrator of Invisible Man are both invisible as individuals and are manipulated by society to become a dehumanized natural resource. The authors of these two works use the protagonist to criticize society's use of certain groups of people only as resources to reach a goal, ignoring the individuality of these people. The very names, or lack thereof, of the main characters indicate their invisibility in the eyes of society. Offred is named after her commander; she is Fred's possession and therefore of Fred. Her original name is never mentioned. Likewise, the name of the narrator of Invisible Man is never mentioned. When he joins the Brotherhood, he is given a new name. Both Offred and the narrator of Invisible Man see their real names as a source of self-identification, yet society refuses to use their real names. Offred is a natural resource to Gilead because she is one of few women who still have viable ovaries. She describes the existence of the handmaids: "We are two-legged wombs, that's all: sacred vessels, ambulatory chalices. We are containers, it's only the insides of our bodies that are important. What we prayed for was emptiness, so we would be worthy to be filled: with grace, with love, with self-denial, with semen and babies." (pg. 176, 124, 251) The narrator of Invisible Man is a resource is a similar way. The Brotherhood uses him as a speaker to advance their efforts to take power over the blacks. He says"What was 1, a man or a natural resource?" (pg. 303) Offred is seen not as an individual, but as one of a group of women who must serve the Republic of Gilead. When Offred asks the Commander for skin lotion, she says, "Our hands get very dry. For some reason I said our instead of my." (pg. 203) Here she sees herself as one of many handmaids, as she was taught to see at the Red Center. The narrator of Invisible Man, like Offred, finds himself identifying with a group and not with himself. He says, "they usually think in terms of "we" while I have always tended to think in terms of "me.
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