Biodiversity Essay Example | Topics and Well Written Essays - 250 words

Biodiversity - Essay Example As opposed to Cardinale et.al (2012), Dawson et.al (2011) argues that climate change is the major threat to biodiversity in the 21st century and not human activities as stated by the former. In light of this, the article addresses the viable solutions into dealing with the loss of biodiversity as a resultant of climate change. If not, the loss of biodiversity will be complemented by termination of evolutionary potential and consequent disruption of ecological services. Both of which are equally detrimental. In response to this, the article proposes the development of an Integrated Science of Climate-Change Biodiversity Assessment as the most effective solution in curtailing the loss of biodiversity. However, regardless of the difference in the opinions in both articles, all the authors acknowledge the importance of the biodiversity. It is due to this that Cardinale et.al (2012) focuses their research on the specific effects of the loss of biodiversity on humans while Dawson et.al (2011) explores viable methods of mitigating their current loss. Biodiversity plays a very significant role in every ecosystem and numerous factors including human activities and climatic change are resulting in their loss. As a result, there should be measures that address every factor resulting in the loss as opposed to individual issues as seen

Building smulation model by arena to ptimize airplane C3 check Essay

Building smulation model by arena to ptimize airplane C3 check manitenance - Essay Example Once ACFT is taken O.O.S different specialty are responsible to accomplish the specified check that it is due for and make an agreed commitment to bring the ACFT back in service (B.I.S) on a specific date and time (Mcgarvey 2009). However, there are so many specialties working to achieve this goal. Therefore, effort on making good utilization and excellent planning must be considered to make sure communication and coordination are applied and insuring all this is not easy. For Instance Airframe is one of the biggest departments that cover under its umbrella many ATA chapters such as fuel, hydraulics, landing gears, flight controls, water and waste, cargo compartment, ice and rain, fire systems as well as empennage, fuselage and wings which belongs to Airframe department. Therefore, we are interested on it and as we imitate and mimic its system we will have a very good picture the maintenance system with specialties other than airframe (Brady & Hillestad 1995). There are power plant, avionics, inspection, cabin and structure or they call tem sheet metal departments. All these specialties attack the plane once it is arrived in the Hanger for heavy maintenance do their best to have back on the pre-selected date and time. A myriad of human factors challenges associated with aircraft maintenance exist. Maintenance and inspection are essential to ensure continuing airworthiness on the aging fleet. New advanced technology procedures for aircraft further complicate the aviation maintenance system. The human is a critical component of the maintenance -system. Therefore, research and development must address a variety of issues affecting the human in maintenance. In order to plan well and have an actual picture of the system shortcomings and high performance areas within the system we will have to simulate that particular system. Simulation is a tool that gives us the chance to mimic any system with data available, analyzed and entered in any program such as Arena which is one of the popular and powerful computer programs (Charlotte 2009). Since we have so many specialties, multiple maintenance scheduled check types as well as many different ACFT types that are owned by Saudi Arabian airlines, the simulation process will get complex, thus, we will mimic only one type of airplane-747-400, one type of maintenance scheduled checks which is C- check (Kinnison 2004). Keywords: Hanger Maintenance, C-Check, Scheduling, Human Component in Maintenance, Simulation. 2.0 Goal The goal of this report is to build a simulation model for Aircraft Maintenance departments’ activities that will allow us to capture each and every process in order to optimize the manpower utilization and reduce maintenance time by eliminating delays especially when bottle necks confront. 3.0 Literature Review The aircraft is the fastest method of transport that can quickly transport people and cargo over longer distances, but incur high costs and energy use. For short distances or in inaccessible places  helicopters  can be used. According to Friend (1992), growth of population explosion in world has raised the air transportation sector; in 2010 it accounts 19% of passenger, and 48% of cargo of whole transportation in world. In 2009, Saudi