Cruz-Peragon F.,University of Jaen |
Palomar J.M.,University of Jaen |
Casanova P.J.,University of Jaen |
Dorado M.P.,EPS Inc |
Manzano-Agugliaro F.,University of Almeria
Renewable and Sustainable Energy Reviews | Year: 2012
Characterization of solar collectors is based on experimental techniques next to validation of associated models. Both techniques may be adopted assuming different complexities. In this work, a general methodology to validate a collector model, with undetermined associated complexity, is presented. It serves to characterize the device by means of critical coefficients, such as the film (convection) transfer coefficient, plate absortance or emmitance. The first step consists of identifying those significant parameters that match the selected model with the experimental data, via nonlinear optimization techniques, applied to steady state conditions. Second, new correlations must be adopted, in those terms where it is necessary (i.e. film coefficient equations). Finally, the overall model must be checked in transient regime. To illustrate the technique, a tailor-made prototype flat plate solar collector has been analyzed. An intermediate complex collector model has been proposed (2D finite-difference method). Both steady and transient states were analyzed under different operating conditions. Parameter identification is based on Newton's method optimization. For parameter approximation, exponential regression functions through multivariate analysis of variance is proposed among many other alternatives. Results depicted a robustness of the overall proposed method as starting point to optimize models applied to solar collectors. © 2011 Elsevier Ltd. All rights reserved. Source
EPS Inc | Date: 2014-09-12
A structure is configured to be flat in an unassembled position and to form a three-dimensional structure in an assembled position. The structure includes a plurality of adjacent panels coupled together along fold lines with each panel including a foam core covered on one surface by a flexible skin. The flexible skin is continuous between the adjacent panels that are coupled together for forming a respective fold line for the adjacent panels to be brought together at a right angle to each other along the fold line. The foam core of each panel includes a mitered surface along abutting edges to form a miter joint when adjacent panels are brought together. Slots are formed in the panel cores adjacent to mitered surfaces. Brackets span a miter joint between adjacent panels, holding the spanned miter joint and panels together in a three-dimensional structure.
News Article | April 23, 2015
Google reported its earnings for its first financial quarter of 2015 today. The company reported revenue of $17.3 billion and earnings per share of $6.57. GAAP net income for the last quarter was $3.6 billion. That compares to $15.42 billion in revenue and earnings of $6.27 per share in the year-ago-quarter. Wall Street expected the company to report EPS of around $6.61 on $17.5 billion in revenue. It looks like Wall Street is undeterred by this miss, though. The stock is up almost 2 percent in after-hours trading, likely because it looks like Google is starting to get cost under control. Capital expenditures were $3.6 billion in the year-ago-quarter and are now down to $2.92 billion. The company now sits on $65.436 billion in cash. Google argues that its earnings took a $1.1 billion hit due to currency fluctuations and the rising dollar. “Google’s first quarter revenue was $17.3 billion, up 12% year on year. Excluding the net impact of foreign currency headwinds, revenue grew a healthy 17% year on year,” said Patrick Pichette, CFO of Google, in a statement. “We continue to see great momentum in our mobile advertising business and opportunities with brand advertisers.” Besides the raw revenue numbers, there are a couple of other metrics that Google analysts typically watch for to gauge the company’s business. Paid Clicks, that is all the clicks on ads served on Google’s sites and that of its partners and AdSense members, increased 13 percent compared to the year-ago quarter but decreased 1 percent from last quarter. Analysts expected paid clicks to be up around 15 percent ahead of the earnings release. The cost-per-click decreased 7 percent compared to Q1 2014 and Google’s traffic acquisition cost — that is the amount of revenue Google shares with its partners, were $2.432 billion, up slightly from the last quarter. Lately, Google’s R&D costs have rapidly increased as the company ramps up its efforts to disrupt existing markets, enter new ones, and shoot for the moon. Google’s R&D expenses for all of 2014 totaled $9.8 billion, up from $7.1 billion the year before. Google hasn’t released its numbers for this quarter yet, but it will likely do so before the earnings call today.
News Article | January 27, 2015
Apple announced its Q1 2015 earnings results today reporting $74.6 billion in revenue earning $18 billion in profit during the three-month period. In addition to its revenue and profit disclosure, Apple reported sales numbers for the following categories: Apple CEO Tim Cook said the following regarding the quarter: Ahead of today’s earnings report, sales numbers for both the iPhone and iPad were particular areas of interest. Q1 2015 held the bulk of the iPhone 6 and iPhone 6 Plus sales in the United States and saw the new iPhone models debut in key countries like China. Meanwhile, the iPad sales numbers were particularly interested following last quarter’s year-over-year shipment decrease and the release of the iPad Air 2 and iPad mini 3 in October. Apple’s Q1 2015 numbers follow last quarter’s results of $42.1 billion in revenue and sales of 39 million iPhones, 12.3 million iPads, and 5.5 million Macs. For the same quarter a year ago, Apple reported $57.6 billion in revenue and sales of 51 million iPhones, 26 million iPads, and 4.8 million Macs. Compare also to profit last quarter of $8.5 million and a year ago of $13.1 billion. Apple will hold its conference call today at 2 PM Pacific/5 PM Eastern to discuss the quarter’s numbers, follow along for our coverage then. Both Cook and Maestri will likely share prepared remarks then answer a round of questions from analysts on the call. For Q2 2015 Apple is providing guidance between $52 billion and $55 billion. The full Q1 earnings results release is below: CUPERTINO, Calif.–(BUSINESS WIRE)–Apple® today announced financial results for its fiscal 2015 first quarter ended December 27, 2014. The Company posted record quarterly revenue of $74.6 billion and record quarterly net profit of $18 billion, or $3.06 per diluted share. These results compare to revenue of $57.6 billion and net profit of $13.1 billion, or $2.07 per diluted share, in the year-ago quarter. Gross margin was 39.9 percent compared to 37.9 percent in the year-ago quarter. International sales accounted for 65 percent of the quarter’s revenue. “Our revenue grew 30 percent over last year to $74.6 billion, and the execution by our teams to achieve these results was simply phenomenal.” The results were fueled by all-time record revenue from iPhone® and Mac® sales as well as record performance of the App Store℠. iPhone unit sales of 74.5 million also set a new record. “We’d like to thank our customers for an incredible quarter, which saw demand for Apple products soar to an all-time high,” said Tim Cook, Apple’s CEO. “Our revenue grew 30 percent over last year to $74.6 billion, and the execution by our teams to achieve these results was simply phenomenal.” “Our exceptional results produced EPS growth of 48 percent over last year, and $33.7 billion in operating cash flow during the quarter, an all-time record,” said Luca Maestri, Apple’s CFO. “We spent over $8 billion on our capital return program, bringing total returns to investors to almost $103 billion, over $57 billion of which occurred in just the last 12 months.” Apple is providing the following guidance for its fiscal 2015 second quarter: Apple’s board of directors has declared a cash dividend of $.47 per share of the Company’s common stock. The dividend is payable on February 12, 2015, to shareholders of record as of the close of business on February 9, 2015. Apple will provide live streaming of its Q1 2015 financial results conference call beginning at 2:00 p.m. PST on January 27, 2015 at www.apple.com/quicktime/qtv/earningsq115. This webcast will also be available for replay for approximately two weeks thereafter. This press release contains forward-looking statements including without limitation those about the Company’s estimated revenue, gross margin, operating expenses, other income/(expense), and tax rate. These statements involve risks and uncertainties, and actual results may differ. Risks and uncertainties include without limitation the effect of competitive and economic factors, and the Company’s reaction to those factors, on consumer and business buying decisions with respect to the Company’s products; continued competitive pressures in the marketplace; the ability of the Company to deliver to the marketplace and stimulate customer demand for new programs, products, and technological innovations on a timely basis; the effect that product introductions and transitions, changes in product pricing or mix, and/or increases in component costs could have on the Company’s gross margin; the inventory risk associated with the Company’s need to order or commit to order product components in advance of customer orders; the continued availability on acceptable terms, or at all, of certain components and services essential to the Company’s business currently obtained by the Company from sole or limited sources; the effect that the Company’s dependency on manufacturing and logistics services provided by third parties may have on the quality, quantity or cost of products manufactured or services rendered; risks associated with the Company’s international operations; the Company’s reliance on third-party intellectual property and digital content; the potential impact of a finding that the Company has infringed on the intellectual property rights of others; the Company’s dependency on the performance of distributors, carriers and other resellers of the Company’s products; the effect that product and service quality problems could have on the Company’s sales and operating profits; the continued service and availability of key executives and employees; war, terrorism, public health issues, natural disasters, and other circumstances that could disrupt supply, delivery, or demand of products; and unfavorable results of other legal proceedings. More information on potential factors that could affect the Company’s financial results is included from time to time in the “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” sections of the Company’s public reports filed with the SEC, including the Company’s Form 10-K for the fiscal year ended September 27, 2014, and its Form 10-Q for the fiscal quarter ended December 27, 2014 to be filed with the SEC. The Company assumes no obligation to update any forward-looking statements or information, which speak as of their respective dates. Apple designs Macs, the best personal computers in the world, along with OS X, iLife, iWork and professional software. Apple leads the digital music revolution with its iPods and iTunes online store. Apple has reinvented the mobile phone with its revolutionary iPhone and App Store, and is defining the future of mobile media and computing devices with iPad. NOTE TO EDITORS: For additional information visit Apple’s PR website (www.apple.com/pr), or call Apple’s Media Helpline at (408) 974-2042. © 2015 Apple Inc. All rights reserved. Apple, the Apple logo, Mac, Mac OS, Macintosh, iPhone and App Store are trademarks of Apple. Other company and product names may be trademarks of their respective owners.
News Article | January 27, 2015
The numbers are finally in for Apple’s Q1 2015 financial quarter, and just as predicted, Apple blew away its own projections with a record-breaking $74.6 billion in revenue, leading to $18 billion in net profits. Both profit and revenue topped Apple’s previous records set in Q1 2014. Apple’s record-breaking quarter was aided in large part by unprecedented demand for the iPhone 6 and 6 Plus. Total iPhone sales hit an astounding 74.5 million, while only 65 million was expected. The iPad experienced decent holiday sales, with 21.4 million sold, and Mac sales didn’t disappoint either. With 5.5 million sold, it’s no wonder Tim Cook called the quarter “simply phenomenal.” Despite the better-than-expected performance, AAPL shares were down 3.51 percent to $109.53 per share by close of market today. Take a look at the impressive numbers in Apple’s announcement below: Apple® today announced financial results for its fiscal 2015 first quarter ended December 27, 2014. The Company posted record quarterly revenue of $74.6 billion and record quarterly net profit of $18 billion, or $3.06 per diluted share. These results compare to revenue of $57.6 billion and net profit of $13.1 billion, or $2.07 per diluted share, in the year-ago quarter. Gross margin was 39.9 percent compared to 37.9 percent in the year-ago quarter. International sales accounted for 65 percent of the quarter’s revenue. The results were fueled by all-time record revenue from iPhone® and Mac® sales as well as record performance of the App Store℠. iPhone unit sales of 74.5 million also set a new record. “We’d like to thank our customers for an incredible quarter, which saw demand for Apple products soar to an all-time high,” said Tim Cook, Apple’s CEO. “Our revenue grew 30 percent over last year to $74.6 billion, and the execution by our teams to achieve these results was simply phenomenal.” “Our exceptional results produced EPS growth of 48 percent over last year, and $33.7 billion in operating cash flow during the quarter, an all-time record,” said Luca Maestri, Apple’s CFO. “We spent over $8 billion on our capital return program, bringing total returns to investors to almost $103 billion, over $57 billion of which occurred in just the last 12 months.” Apple is providing the following guidance for its fiscal 2015 second quarter: Apple’s board of directors has declared a cash dividend of $.47 per share of the Company’s common stock. The dividend is payable on February 12, 2015, to shareholders of record as of the close of business on February 9, 2015.