Logistics Assignment | Get Paper Help

Reply to 6 students using 45 words or more and ADD a direct question to each reply.

Ensure each name is with its corresponding reply.

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1st Student Teshon Earl
Global positioning system (GPS) is a sophisticated and versatile navigation and mapping technology that can help determine the actual geographical space and direction for a vessel and its position (Ulrich, 2017). GPS works on a technology that is similar to radar and consists of twenty-four medium earth orbit satellites that transmit microwave signals to the earth. These signals are received by the GPS receivers which use the transmitted signals to determine locations, time, speed and direction of a particular object or area on land, air or sea. For the effective functioning of a GPS receiver, it must have a direct line of sight with at least four satellites so that it can tabulate the position. The four satellites’ minimum criterion is useful in the determination of the correct time for the device and the actual position of the receiver (Ulrich, 2017). The received signal is processed to aid in the accurate determination of the location, speed and direction of a vessel. The latitude, longitude, altitude are accurately determined by the receiver through a set of data transmission. The data is transmitted over a wireless network server from which the end-user gets served in his device with accurate locations.

Spoofing is the act of disguising a communication so that it appears to originate from a known, trusted source while in the actual sense, the source is unknown. Spoofing generally happens in the communication channels like email, phone calls and websites (Atoum et al., 2017). Other sophisticated spoofing techniques are used in places where the IP address is hidden, the address resolution protocol or the domain name of the system server is disguised to appear as authentic. This is cybercrime and a threat to national security because sensitive information can be accessed through this.

References

Atoum, Y., Liu, Y., Jourabloo, A., & Liu, X. (2017, October). Face anti-spoofing using patch and depth-based CNNs. In 2017 IEEE International Joint Conference on Biometrics (IJCB) (pp. 319-328). IEEE.

Ulrich, M. (2017, May). The Use of Motion-Based Technology in Oil and Gas Supply Chain Logistics. In Offshore Technology Conference. Offshore Technology Conference.

2nd Student William Paasewe
About a decade ago, if you had asked, what a GPS is, my answer would have aligned with millions of people out there who still thinks GPS is simply a device that provides directions. In actuality, the GPS which stands for Global Positioning System is based on a network of satellites that continuously transmit coded information. According to a USDA (2007) Report, the information transmitted from the satellites can be interpreted by receivers to precisely identify locations on Earth by measuring distances from the satellites.

GPS is controlled and funded by the United States Department of Defense (DOD), where the system is normally referred to as, NAVSTAR-which stands for Navigational Satellite Timing And Ranging. The GPS space segment works by orbiting the Earth and transmitting timing and ranging messages, while the control segment monitors the health and position of the satellites in the space segment before transmitting correction information back up to the satellites. The 3rd and last component of the GPS is the user segment where the hand-held or other receivers used to interpret the messages broadcast from the satellites.

Spoofing or a spoofing attack can be classified in three different groups: Simplistic, intermediate, and sophisticated. Baziar, Moazedi, & Mosavi (2017) alleges that the simplistic spoofer attaches a power amplifier and an antenna to a GPS signal simulator and then radiates the radio frequency (RF) signal toward the target receiver. The intermediate group synchronizes its counterfeit signals with the authentic GPS signal, wile the sophisticated group which is said to be the most effective method of the spoofing generation, uses physical limitations for placing the attacker antenna toward the victim’s receiver to dupe them. To put this simply, spoofing is just another form of hacking a system in order to carry out a cyber attack.

References

Baziar, R. A., Moazedi, M, & Mosavi, R. M. (2017,August). Journal of applied research and technology.

Volume 15, Issue 4. Pp. 402-411

USDA. (2007, August). Introduction to global positioning systems (GPS): Maryland. NRCS

3rd Student Christopher Neal
Throughout history there have been numerous inventions that have changed the way we conduct our lives. Those inventions run the gamut of applicability, everything from gunpowder, the wheel, telephone, and even the airplane. When it comes to transportation, it could be argued that the global positioning system has had the largest impact on all modes. Aircraft, trucks, ships, and even trains rely on this system to provide crucial, and in some cases, life saving data in order to effectively operate onboard systems in a wide variety of uses. Navigation is the obvious answer to most questions posed to inquire on what GPS provides. However, there are numerous other uses for the system. The railroads in the United States were the last mode of transportation to fully employ the benefits of GPS. Railroads did not lend themselves as a viable candidate for using the satellite system for many reasons, some of the more obvious ones were the fact that the system is mainly used for navigation which is not something that trains have difficulty with. However, increased media scrutiny of railroad accidents “derailments” has prompted the Federal Railroad Administration to invoke an order that requires railroads to adapt a system known as Positive Train Control, or PTC. Zhang, Liu, & Holt (2018) note in their article that PTC is meant to prevent railroad accidents that are produced by human error. These types of accidents are train to train impacts, derailment from extreme speed, unauthorized intrusions into work zones, and movement of trains through mis-aligned switches. Zhang et al (2018) also explain that PTC uses a combination of communication networks, GPS or transponders, and fixed wayside signal devices to send and receive information about the position, speed, and course of trains.

The system consists of a network of 27 satellites, of which 24 are used for the operation of the system and three are reserved for redundancy(Marshall & Harris, 2006). This network of satellites is considered the transmitter of the signal. Here on Earth, anything equipped with a GPS receiver can utilize the signals that are provided by the orbiting satellites. Marshal and Harris (2006) explain in their article that each of the 27 satellites weighs three to four thousand pounds and rotate around the earth twice a day. The satellites are also arranged in such a way that at any given time there are at least four of them visible from any point on the surface of the Earth (Marshall & Harris, 2006). The job of the receiver is to pick up the signal provided by the satellites and then use that signal to produce a distance to the transmitter. Once that distance is verified it then takes another distance from another one of the four visible satellites and begins to triangulate a position based off of where those spheres intersect ( Marshall and Harris, 2006).

As stated previously, the system was invented by the Unites States military for war fighting. As time has worn on, the need for the system in numerous applications in the civilian market has skyrocketed. The average American now gets to enjoy the value of the GPS system every day when they look at their cellular telephone and use it to locate something they are looking for or to navigate themselves in unfamiliar territory in their car.

Since GPS is such a coveted system, there is much concern that someday our adversaries might to destroy or disrupt it , rendering the systems who rely on it’s signal either in a degraded state or completely useless. Williamson (2014) explains that spoofing can be used to describe any number of ways that GPS hardware can be tricked. This trickery would cause a vessel, truck, or airplane to veer off course due to the signals being taken in by a GPS receiver being counterfeit. Spoofing is a real-world concern for not only the civilian sector but also the military. The military has mimicked this type of threat in their training scenarios and continues to exercise caution when it comes to being totally reliant on GPS signal. Civilians however have not followed suit. For example in the Aviation field the primary means of navigation used to be Radio Navigation, now, with the high costs of maintaining radio navigation aides, VOR’s, NDB’s, VORTAC’s, etc. the FAA has decided to decommission many of these systems or simply not fix them when they break. The replacement has been the GPS system which is very reliable, but also very easily corrupted.

(Marshall and Harris, 2006)

The figure above is a graphical representation of the process of triangulating a position using the global positioning system.

References:

Marshall, B., & Harris, T. (2006, September 25). How GPS receivers work. HowStuffWorks. https://electronics.howstuffworks.com/gadgets/travel/gps.htm

Williamson, M. (2014). GPS spoofing (Order No. 1562613). Available from ProQuest Dissertations & Theses Global. (1566353651). Retrieved from https://search-proquest-com.ezproxy1.apus.edu/docview/1566353651?accountid=8289

Zhang, Z., Liu, X., & Holt, K. (2018). Positive Train Control (PTC) for railway safety in the United States: Policy developments and critical issues. Utilities Policy, 51, 33–40. https://doi.org/10.1016/j.jup.2018.03.002

4th Student Carl Tucker
One problem that a Florida Theme Park named Wannado City had was making parents feel comfortable at their 40 venue and 140,000 square foot theme park. Being that this park is so huge families, friends and groups wanted to have a way of finding out where members of their group and children was located at in the park. The owners decided to install RFID technology along the park to keep track of children. The process is when you are entering the park you and your children, friend and family will be giving a wrist band. This wrist band is comprised of a “combination of passive, low frequency transponder and an active RFID tag”(RFID, 2004). These wrist band sends radio signals to a series of codes readers that transfers the information to the kiosk placed throughout the park. The kiosk screen will show where your family or friends are at in the park. The data management software allows for this to give you real-time accuracy. The map on the screen of the kiosk will give you the exact location of your friend or family. The instructions to the kiosk can also be translated into Spanish if you identified yourself as Spanish speaking. This feature has gave parents the opportunity to know where there children are at along with allowing the younger children to feel like they have unprecedented freedom and safety.

References

(n.d.). RFID Technology Helps Kids Play It Safe at Florida’s Wannado City Theme Park. Retrieved from https://www.govtech.com/products/RFID-Technology-Helps-Kids-Play-It.html

5th Student Joseph Miller
As I continue to research and form varying thoughts on the use of RFID in animals, I ponder what benefits are realized most outside of disease tracking? For the DB this week, my RFID research problem would consist of five large dairy farms with the same number of cows and grazing land. There would need to be a control group that does not utilize RFID and then the other farms would use varying name brand RFID systems. Each of these systems would need to be able to track cow movement, eating times, sleeping times, heart rates, and other health related functions. The hypothesis is that RFID aides in the ability of farmers to treat and manage their cows in order to produce the greatest number of products.

One background piece of data is the use of Zebra MotionWorks on a dairy farm. The use of the RFID system allowed for a better understanding of cow movements and alerted staff when something out of the ordinary was happening. This allowed for vets to quickly respond to the cows needs. Over time, the business was able to see a 25% increase in milk production and they believe it is because of the RFID system ( Zebra Technologies, 2018).

A few questions for the study are:

1. What is the variation in movement of the cows?

2. How much do the cows graze versus stay in their stalls?

3. How does health play a role in milk production and does being able to quickly address health issues help?

4. Which RFID system offers the easiest user interfaces and set-up / cost effectivesness?

5. What is the variation of milk production between cows that are utilizing RFIS systems versus none?

The research would require other considerations such as climate and age of cows. I would set the study at one year production.

Reference:

Zebra Technologies. (2018). Zebra MotionWorks Case Study: Dairy Farming. Retrieved from https://www.youtube.com/watch?v=SXa8ZkhNKes

6th Student Rayvonne Sang
Class,

For this week’s forum, I chose to research the problem of tracking student attendance in the classroom. Having taught a class or two at my workplace, I usually pass around a paper attendance roster so that I can track how many people attended my class. In the past, I would have each student print their names and employee identification numbers on a piece of paper, so that I could manually enter their information into our training database after the class. The key problem was accurately putting their individual information into a training database, which was very time-consuming. My suggestion would be to use an RFID reader that could be placed just inside the doorway, to scan employee badges as they entered the classroom (Pireva, Siqeca & Berisha, 2016).

As the employees walk into the classroom, the RFID scanner would read each durable tag as the students entered the classroom. Although the durable tags cost more (€5 each which is equivalent to $5.40 in the U.S.) they can read each tag better than the label tags even if they are inside of a pocket, purse, or laying on top of a desk (Pireva et al., 2016). The label tags are prone to interference such as standing up in front of the tag as it lays on a desk (Pireva et al., 2016). The use of durable RFID tags will save the instructor from distractions and having to set aside time for attendance at the beginning of the class. The next step would be to save the names and employee numbers and import them into the training database. The time saved in the use of this process would allow a company to process multiple classes in a shorter timeframe.

Reference

Pireva, K., Siqeca, J., & Berisha, S. (2016). RFID: Management System for students’ attendance. Retrieved from https://www.sciencedirect.com/science/article/pii/S1474667016342288

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