Research Methods

Akintoye, E., Shi, L., Obaitan, I., Olusunmade, M., Wang, Y., Newman, J. D., & Dodson, J. A. (2016). Association between fine particulate matter exposure and subclinical atherosclerosis: A meta-analysis. European Journal of preventive cardiology, 23(6), 602-612.

According to Akintoye et al. (2016), the long-term exposure to particulate matter such as soot, fly ash, asbestos, pollen, smog, mold spores, bacteria, and virus found in polluted areas or could cause health issues. The nature of work that the Sun Coast employees do is to clean areas contaminated by the above mentioned toxic material, which means that they are exposed to them in their daily activities. Exposure to this particulate matter could cause lung cancer cardiopulmonary mortality. Particulate matter that the PM of below 10 microns is very harmful as they can be inhaled, causing complications to the respiratory system, which is one of the risk factors facing the Sun Coast employees.

Fenga, C., Gangemi, S., Di Salvatore, V., Falzone, L., & Libra, M. (2017). Immunological effects of occupational exposure to lead. Molecular Medicine Reports, 15(5), 3355-3360.

High levels of lead exposure on human beings could harm their health. The employees of Sun Coast carry out contracts with an organization that aims at remediating sites that have been contaminated by Lead, which means that they are exposed to the substance for an extended period at high levels. According to Fenga et al. (2017), occupational exposure to lead can cause immunological effects on human beings as high levels of Lead present in the human system or blood affects how the body's immune system responds to various factors and diseases causing organisms. The Effect of Lead on the immune system makes the individuals prone to allergies, infectious diseases, reproductive system, cardiovascular and nervous system problems that threaten their lives.

Gan, W. Q., & Mannino, D. M. (2018). Occupational noise exposure, bilateral high-frequency hearing loss, and blood pressure. Journal of occupational and environmental medicine, 60(5), 462-468.

According to Gan & Mannino (2018), exposure to occupational noise could lead to hearing loss and heightened blood pressure. Sun Coast render to their clients involves using the heavy machine, which makes the working environment noisy for the employees. Gan & Mannino (2018) states that a working environment with noise levels exceeding 120 decibels (dB) could harm the people working there, and with time it would cause them to lose their hearing ability. The high level of noise exposure that the Sun Coast employees are exposed to could also heighten diastolic blood pressure. The high level of noise and vibrations caused by the Sun Coast employees' heavy equipment causes an increase in heart rate, elevating blood pressure that might lead to hypertension, threatening their lives.

Robison, L. J., Barry, P. J., & Myers, R. J. (2015). Consistent IRR and NPV rankings. Agricultural Finance Review.

Inconsistency in the reruns on investment is a massive problem in businesses where investors do not get the expected returns of how much resources they have invested in a business. Sun Coast has a problem with the inconsistency of return of profit from its different business lines, which can be caused by the dedication of energy and resources to some business lines and not the others and the competition in the field of operation. When a company with different lines invests a lot in some lines, they tend to give high returns than those with little resources. The competition in the field might also affect how some business lines perform due to many competitors reducing the chances of some lines securing a contract that will bring high returns.