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A PROPAGATION PATH LOSS MODEL OF GLOBE TELECOMMUNICATIONS’ CELLULAR MOBILE SYSTEM OVER CEBU CITY
Andrew Louis M. Canonigo,Dexter A. Hormillada,Krsytale C. Chan,Carl E. Markgraph II,Ronyard Olivere B. Penola,Alberto S. Banacia 대한전자공학회 2010 ICEIC:International Conference on Electronics, Inf Vol.1 No.1
This research study is about a Propagation Path Loss Model for Cebu City. With a Propagation Path Loss model, transmission loss and strength of the signal received at a certain distance can be predicted. The Study is done to address the lack of a Propagation path loss model for Cebu City. A Propagation Model is empirical in nature. With this said, great amounts of data was gathered through a random route walk test using the Nokia Net Monitor installed on a Nokia 3310 cell phone to measure signal strength and using the Gramin GPS 12 personal navigator, distance form the base station was measured. The Lee microcell model was used and is fit for the microcell environment. As specified, building block densities were calculated using a topographical map which details building orientations over the subject area. From the data gathered a Propagation path Loss Model was formulated and validated over the said area in Cebu City. From the model generated, a close likeliness of the actual measured data to the predicted data was observed. It was also found out that the Lee microcell model was sensitive to terrain undulation.
Martirez, John Mark P.,Kim, Seungchul,Morales, Erie H.,Diroll, Benjamin T.,Cargnello, Matteo,Gordon, Thomas R.,Murray, Christopher B.,Bonnell, Dawn A.,Rappe, Andrew M. American Chemical Society 2015 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY - Vol.137 No.8
<P>In addition to composition, the structure of a catalyst is another fundamental determinant of its catalytic reactivity. Recently, anomalous Ti oxide-rich surface phases of ternary oxides have been stabilized as nonstoichiometric epitaxial overlayers. These structures give rise to different modes of oxygen binding, which may lead to different oxidative chemistry. Through density functional theory investigations and electrochemical measurements, we predict and subsequently show that such a TiO<SUB>2</SUB> double-layer surface reconstruction enhances the oxygen evolving activity of the perovskite-type oxide SrTiO<SUB>3</SUB>. Our theoretical work suggests that the improved activity of the restructured TiO<SUB>2</SUB>(001) surface toward oxygen formation stems from (i) having two Ti sites with distinct oxidation activity and (ii) being able to form a strong O–O moiety (which reduces overbonding at Ti sites), which is a direct consequence of (iii) having a labile lattice O that is able to directly participate in the reaction. Here, we demonstrate the improvement of the catalytic performance of a well-known and well-studied oxide catalyst through more modern methods of materials processing, predicted through first-principles theoretical modeling.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jacsat/2015/jacsat.2015.137.issue-8/ja511332y/production/images/medium/ja-2014-11332y_0008.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ja511332y'>ACS Electronic Supporting Info</A></P>
Kendal R. Howard,Cheyenne L. Runyan,Allen B. Poe,Andrew M. Cassens,Lea A. Kinman Asian Australasian Association of Animal Productio 2024 Animal Bioscience Vol.37 No.1
Objective: This research was conducted to evaluate the effects of citrus fiber (CF) as a natural alternative to sodium tripolyphosphate (STPP) in marinated broiler boneless chicken breast and inside beef skirt on overall retention rate, shear force, and consumer sensory attributes. Methods: Five different marinade formulations were targeted to include 0.9% salt, either 0.25% or 0.50% STPP or CF and water on a finished product basis. Water and salt only were considered the negative control (CON). Chicken breasts (n = 14) and inside beef skirt (n = 14) were randomly assigned to a treatment, raw weights recorded and then placed in a vacuum tumbler. Marinated weights were recorded, individually packed, and randomly assigned to either retail display for 10-day retention rate, shear force analysis, cook loss, or consumer sensory panel. Results: Pickup percentage, and overall retention was similar among treatments for chicken breast and inside beef skirt. Citrus fiber treatments resulted in higher cooking loss compared to the CON in chicken breast; though, CF050 resulted in similar cooking loss compared to STPP025 in inside beef skirt. No differences were found in sensory attributes for chicken breast, however, WBSF data showed CF025 was tougher than CF050, STPP050, and CON. Inside beef skirt with CF050 were least liked overall by the consumer panel. Conclusion: Citrus fiber included in marinades at a lower percentage rate can produce similar texture characteristics, and sensory properties compared with those marinated with STPP.
( Andrew R. Horn ),( Keith B. Diamond ),( Mitchell K. Ng ),( Rushabh M. Vakharia ),( Michael A. Mont ),( Orry Erez ) 대한고관절학회 2021 Hip and Pelvis Vol.33 No.4
Purpose: Alcohol use disorder is a leading mental health disorder in the United States. Few studies evaluating the association of alcohol use disorder following primary total hip arthroplasty (THA) have been reported. Therefore, the purpose of this study was to determine whether patients with alcohol use disorder undergoing primary THA have higher rates of: 1) in-hospital lengths of stay (LOS); 2) complications (medical/implant-related); and 3) costs. Materials and Methods: Using a nationwide claims database from January 1st, 2005 to March 31st, 2014, patients with alcohol use disorder undergoing primary THA were identified and matched to a comparison group according to age, sex, and various comorbidities, resulting in 230,467 patients who were included in the study (n=38,416) and a matched-cohort (n=192,051). Outcomes of interest included comparison of LOS, 90-day medical and 2-year implant-related complications, and costs. A P-value less than 0.002 was considered statistically significant. Results: Patients with alcohol use disorder had longer in-hospital LOS (4 days vs 3 days; P<0.0001) as well as higher frequency and odds ratio (OR) of 90-day medical (45.94% vs 12.25%; OR, 2.89; P<0.0001) and 2-year implant-related complications (17.71% vs 8.46%; OR, 1.97; P<0.0001). Patients in the study group incurred higher 90-day costs of care ($17,492.63 vs $14,921.88; P<0.0001). Conclusion: With the growing prevalence of alcohol use disorder in the United States, the current investigation can be utilized to evaluate the need for interventions prior to THA which can potentially minimize the rates of morbidity and mortality within this population.
A Spray-Processable, Low Bandgap, and Ambipolar Donor−Acceptor Conjugated Polymer
Steckler, Timothy T.,Zhang, Xuan,Hwang, Jungseek,Honeyager, Ryan,Ohira, Shino,Zhang, Xiao-Hong,Grant, Adrian,Ellinger, Stefan,Odom, Susan A.,Sweat, Daniel,Tanner, David B.,Rinzler, Andrew G.,Barlow, S American Chemical Society 2009 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY - Vol.131 No.8
Calibration of Time-Interleaved Errors in Digital Real-Time Oscilloscopes
Cho, Chihyun,Lee, Joo Gwang,Hale, Paul D.,Jargon, Jeffrey A.,Jeavons, Peter,Schlager, John B.,Dienstfrey, Andrew Professional Technical Group on Microwace Theory a 2016 IEEE Transactions on Microwave Theory and Techniqu Vol. No.
<P>A channel mismatch calibration method is proposed for use in time-interleaved digital real-time oscilloscope (DRTO) applications. Linear equations are derived using Fourier transforms of the separated signals from each of the time-interleaved analog-to-digital converters (TIADCs). Thus the errors in the TIADCs can be easily calibrated by inversion of a matrix, as opposed to most previous work where additional filters are employed. The calibration accuracy of the proposed method is limited only by the noise produced after the TIADC circuitry, while other methods depend on the filter design. A transfer function measurement method is then proposed for application to commercially available DRTOs. Two-tone signals are measured using DRTOs from various suppliers to validate the proposed method. The occurrence of signals at spurious frequencies is considerably reduced, as demonstrated by the calibrated results.</P>