Tag: Engineer PDH
Online PDH Credits for Licensed PEs. Complete Your Professional Engineer Continuing Education Requirements Today With These Online Articles, Written By Engineers for Engineers.
Achievable Energy Efficiency and Spectral Efficiency of Large-Scale Distributed Antenna Systems
Complete this online article and the attached quiz for 1 PDH (CPC, CPD) credits towards your professional engineering license. This article is approved in all 50 states for license renewal.
In the large-scale distributed antenna system (LS-DAS), a large number of antenna elements are densely deployed in a distributed way over the coverage area, and all the signals are gathered at the cloud processor (CP) via dedicated fiber links for globally joint processing. Intuitively, the LS-DAS can inherit the advantage of both large-scale multiple-input-multiple-output (MIMO) and network densification; thus, it offers enormous gains in terms of both energy efficiency (EE) and spectral efficiency (SE). However, as the number of distributed antenna elements (DAEs) increases, the overhead for acquiring the channel state information (CSI) will increase accordingly. Without perfect CSI at the CP, which is the majority situation in practical applications due to limited overhead, the claimed gain of LS-DAS cannot be achieved. To solve this problem, this chapter considers a more practical case with only the long-term CSI including the path loss and shadowing known at the CP. As the long-term channel fading usually varies much more slowly than the short-term part, the system overhead can be easily controlled under this framework. Then, the EE-oriented and SE-oriented power allocation problems are formulated and solved by fractional programming (FP) and geometric programming (GP) theories, respectively. It is observed that the performance gain with only long-term CSI is still noticeable and, more importantly, it can be achieved with a practical system cost.
This paper is available for 1 PDH credit towards your PE license
Register for QuizActive Vibration Control Using a Kautz Filter
Complete this online article and the attached quiz for 1 PDH (CPC, CPD) credits towards your professional engineering license. This article is approved in all 50 states for license renewal.
Impulse response functions (IRFs) have been largely used in experimental modal analysis in order to extract the modal parameters (natural frequencies, damping factors and modal forms) in different areas. IRFs occupy a prominent place in applications of aeronautical, machinery and automobile industries, mainly when the system has coupled modes.
This paper is available for 1 PDH credit towards your PE license
Register for QuizAdvanced Features and Applications of Heat Exchangers–An Outline
Complete this online article and the attached quiz for 1 PDH (CPC, CPD) credits towards your professional engineering license. This article is approved in all 50 states for license renewal.
The importance of the advances on the development of new generation heat exchangers and their innovative applications and the subsequent improvement in energy efficient processes relates directly with the energy issues that occupy the first place in the list of the most urgent to solve problems for mankind [1]. It is well accepted that any contribution to improve the way we deal with energy will help in solving our most dramatic problems like water, food, environment, poverty, violent conflicts, disease, education, and population.
This paper is available for 1 PDH credit towards your PE license
Register for QuizThe World's First Seawater and Solar Powered Farm
A state-of-the-art tomato farm has begun operations in Port Augusta, Australia. What makes this farm unique is that it runs completely on seawater and solar power. There are tomatoes growing in the desert! Thanks to the efforts of Sundrop Farms Holdings LTD 37,000 lbs of tomatoes will be on shelves every year. This is paramount since traditional agriculture is wasteful in terms of water and fossil fuels. Instead of soil, pesticides, fossil fuels, and groundwater, Sundrop Farms uses only Solar Power and desalinated seawater on its 49-acre farm.
The increase in population has influenced scientists, researchers, government officials and many other professionals to address food, water, and energy shortages. In this pilot facility, water is pumped from the Spencer Gulf 1.2 miles and then desalinated with solar power. The farm's solar power is generated by 23,000 mirrors that reflect sunlight towards a 377ft high receiving tower. 118 million gallons of fresh water each year, will be created. That’s 180 Olympic sized swimming pools. This process makes it the optimal environment to grow tomatoes. Seawater-soaked cardboard keeps the plants cool and solar heat keeps the greenhouse warm in winter months. The seawater sterilizes the air and plants are grown in coconut husks allowing them to thrive without pesticides.
Extreme weather events make it difficult to consistently provide consumers with products each year. Agriculture in different areas is devastated by weather. One solution to this problem was put to the test last week during a once-in-50-year storm that wreaked havoc in South Australia. Sundrop Farms was able to take the brunt of high winds and continue operations despite a massive blackout that crippled many industries in the areas making them inoperable. While other companies suffered massive setbacks Sundrop Farms is "living proof" that its groundbreaking technology could work on a large scale.
Other solar/seawater farms are being developed from the U.S. to Portugal and Africa. Each company and facility will be fulfilling local needs as well as sculpting the agriculture of tomorrow.
https://www.ecowatch.com/sundrop-farms-solar-desalination-2033987160.html
DO YOU NEED ENGINEERING PDHs?
ePDHonline.com offers online PDH credits based on modern articles written by professional engineers.
What is a PDH?
PDH stands for a Professional Development Hour which is the unit used to measure continuing education for a Professional Engineers. Most states require professional engineers to complete a certain number of professional development hours (PDH) in order to keep their state license current.
How do I find out the number of professional development hours I need?
The number of PDH credits required for your license depends on the state (or states) you are licensed in. ePDHonline.com has a full list of license requirements for Professional engineers, including PDH requirements broken down state-by-state.
Do I need to complete PDH courses every year?
PDH completion requirements are based on your states licensing cycle. Some states do require professional engineers to renew their license annually, however most states have a two or three year licensing cycle. For a complete list of licensing periods and renewal dates, check your state info on ePDHonline.com.