Relevant bibliographies by topics / DBM

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Academic literature on the topic 'DBM'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 March 2023

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Journal articles on the topic "DBM"

1

Downs, Drew T., Michael A. Clynne, Duane E. Champion, and L. J. Patrick Muffler. "Eruption age and duration of the ∼9 km3 Burney Mountain dacite dome complex, northern California, USA." GSA Bulletin 132, no. 5-6 (October 30, 2019): 1150–64. http://dx.doi.org/10.1130/b35240.1.

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Abstract At ∼9 km3, the six dacite domes (db1–db6) of Burney Mountain, northern California, USA, constitute the most voluminous Quaternary dome complex in the Cascades volcanic arc. Whole-rock geochemistry, electron microprobe, and petrographic data indicate that the domes are magmatically related, which when integrated with geomorphology and stratigraphic superposition, indicate early (db1, db2, and db3) and late (db4, db5, and db6) erupted groups. We present 40Ar/39Ar ages of 271.9 ± 4.6 ka (db1), 280.8 ± 8.2 and 281.7 ± 6.8 ka (db2), and 290.2 ± 6.0 ka (db3) along with a previous age of 280 ± 12 ka (db1). These ages scatter over 20 k.y., whereas remanent magnetic directions are similar between 53.3–59.0° inclination and 352.7–355.9° declination. The latter data set indicates that the dacite domes were emplaced over a geologically brief time interval, not thousands of years. Crystal-size distribution patterns of plagioclase were used to calculate residence times, which we use to infer the duration over which the eruptions likely occurred. Three slopes represent three populations of plagioclase crystals (fine-grained groundmass, coarse-grained groundmass, and phenocrysts). A commonly used growth rate for plagioclase in dacitic magmas (10−10 mm/s) yields 9–10 yr of growth for the coarse-grained groundmass (early erupted domes of db1, db2, and db3), whereas plagioclase in the fine-grained groundmass (late erupted domes of db4, db5, and db6) grew over 4–5 yr. All plagioclase phenocrysts have apparent residence times of 26–36 yr; however, they contain high anorthite (An)>70 resorbed cores with sieve textures, which have euhedral, lower An<65 overgrowth rims. Similarities in chemistry between groundmass plagioclase and phenocryst overgrowth rims indicate that they grew concurrently, and we therefore propose that both have similar residence times. Thus, the Burney Mountain dacite dome complex was emplaced during a single eruptive episode over the course of years to decades at 281.1 ± 4.8 ka (weighted mean age).
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Nguyen, Hong Quang, and Minh Thuy Le. "Multiband Ambient RF Energy Harvester with High Gain Wideband Circularly Polarized Antenna toward Self-Powered Wireless Sensors." Sensors 21, no. 21 (November 8, 2021): 7411. http://dx.doi.org/10.3390/s21217411.

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In this work toward a sustainable operation of a self-powered wireless sensor, we investigated a multiband Wi-Fi/3G/4G/5G energy harvester based on a novel wideband circularly polarized antenna, a quadplexer, and rectifiers at four corresponding bands. This proposed antenna consisted of four sequentially rotated dual-dipoles, fed by a hybrid feeding network with equal amplitude and an incremental 90° phase delay. The feeding network was composed of three Wilkinson power dividers and Schiffman phase shifters. Based on the sequential rotation method, the antenna obtained a −10 dB reflection coefficient bandwidth of 71.2% from 1.4 GHz to 2.95 GHz and a 3 dB axial ratio (AR) bandwidth of 63.6%, from 1.5 GHz to 2.9 GHz. In addition, this antenna gain was higher than 6 dBi in a wide bandwidth from 1.65 GHz to 2.8 GHz, whereas the peak gain was 9.9 dBi. The quad-band rectifier yielded the maximum AC–DC conversion efficiency of 1.8 GHz and was 60% at −1 dBm input power, 2.1 GHz was 55% at 0 dBm, 2.45 GHz was 55% at −1 dBm, and 2.6 GHz was 54% at 0.5 dBm, respectively. The maximum RF–DC conversion efficiency using the wideband circularly polarized antenna was 27%, 26%, 25.5%, and 27.5% at −6 dBm of input power, respectively.
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Li, Zhiqun, Yan Yao, Zengqi Wang, Guoxiao Cheng, and Lei Luo. "A Low-Voltage Multi-Band ZigBee Transceiver." Electronics 8, no. 12 (December 4, 2019): 1474. http://dx.doi.org/10.3390/electronics8121474.

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This paper presents a low-voltage ZigBee transceiver covering a unique frequency band of 780/868/915/2400 MHz in 180 nm CMOS technology. The design consists of a receiver with a wideband variable-gain front end and a complex band-pass filter (CBPF) based on poles construction, a transmitter employing the two-point direct-modulation structure, a Ʃ-Δ fractional-N frequency synthesizer with two VCOs and some auxiliary circuits. The measured results show that under 1 V supply voltage, the receiver reaches −93.8 dBm and −102 dBm sensitivity for 2.4 GHz and sub-GHz band, respectively, and dissipates only 1.42 mW power. The frequency synthesizer achieves −106.8 dBc/Hz and −116.7 dBc/Hz phase noise at 1 MHz frequency offset along with 4.2 mW and 3.5 mW power consumption for 2.4 GHz and sub-GHz band, respectively. The transmitter features 2.67 dBm and 12.65 dBm maximum output power at the expense of 21.2 mW and 69.5 mW power for 2.4 GHz and sub-GHz band, respectively.
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Zhu, Ming, Fei Liu, Zhiping Cai, and Ming Xu. "Maintaining Connectivity of MANETs through Multiple Unmanned Aerial Vehicles." Mathematical Problems in Engineering 2015 (2015): 1–14. http://dx.doi.org/10.1155/2015/952069.

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Recently, Unmanned Aerial Vehicles (UAVs) have emerged as relay platforms to maintain the connectivity of ground mobile ad hoc networks (MANETs). However, when deploying UAVs, existing methods have not consider one situation that there are already some UAVs deployed in the field. In this paper, we study a problem jointing the motion control of existing UAVs and the deployment of new UAVs so that the number of new deployed UAVs to maintain the connectivity of ground MANETs can be minimized. We firstly formulate the problem as a Minimum Steiner Tree problem with Existing Mobile Steiner points under Edge Length Bound constraints (MST-EMSELB) and prove the NP completeness of this problem. Then we propose three Existing UAVs Aware (EUA) approximate algorithms for the MST-EMSELB problem: Deploy-Before-Movement (DBM), Move-Before-Deployment (MBD), and Deploy-Across-Movement (DAM) algorithms. Both DBM and MBD algorithm decouple the joint problem and solve the deployment and movement problem one after another, while DAM algorithm optimizes the deployment and motion control problem crosswise and solves these two problems simultaneously. Simulation results demonstrate that all EUA algorithms have better performance than non-EUA algorithm. The DAM algorithm has better performance in all scenarios than MBD and DBM ones. Compared with DBM algorithm, the DAM algorithm can reduce at most 70% of the new UAVs number.
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Zheng, Chun-Yi, Wen-Jung Chiang, Yeong-Lin Lai, Edward Y. Chang, Shen-Li Chen, and K. B. Wang. "Characteristics of GaAs Power MESFETs with Double Silicon Ion Implantations for Wireless Communication Applications." Open Materials Science Journal 10, no. 1 (June 15, 2016): 29–36. http://dx.doi.org/10.2174/1874088x01610010029.

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GaAs power metal-semiconductor field-effect transistors (MESFETs) were fabricated using direct double silicon (Si) ion implantation technology for wireless communication applications. A 150-µm MESFET had a saturation drain current of 238 mA/mm after Si3N4passivation. A 15-mm MESFET, when measured under a class-AB condition with a biased drain voltage of 3.4 V and a quiescent drain current of 600 mA, delivered a maximum output power (Pout) of 31.1 dBm and a maximum power-added efficiency (PAE) of 58.0% at a frequency of 1.88 GHz. The MESFET exhibited aPoutof 29.2 dBm with a PAE of 45.0% at the 1-dB gain compression point. The MESFET, when measured under a deep class-B condition with a biased drain voltage of 4.7 V and a quiescent drain current of 50 mA, achieved a maximumPoutof 33.1 dBm and a maximum PAE of 55.9% at 1.88 GHz. The MESFET operating at 4.7 V and 1.88 GHz exhibited aP1dBof 31.8 dBm and an associated PAE of 47.1% at the 1-dB gain compression point. When tested by IS-95 code-division multiple access (CDMA) standard signals and biased at 4.7 V under the deep class-B condition, the MESFET with aPoutof 28 dBm demonstrated an adjacent channel power rejection (ACPR) of –31.2 dBc at +1.25 MHz apart from the 1.88 GHz center frequency and –45.7 dBc at +2.25 MHz.
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Agehara, Shinsuke, and Daniel I. Leskovar. "Growth Suppression by Exogenous Abscisic Acid and Uniconazole for Prolonged Marketability of Tomato Transplants in Commercial Conditions." HortScience 52, no. 4 (April 2017): 606–11. http://dx.doi.org/10.21273/hortsci11518-16.

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Vegetable transplants grown in commercial high-density trays can quickly outgrow the optimal size for shipping and transplanting, limiting transplant performance, and marketing flexibility for commercial nurseries. Abscisic acid (ABA) and uniconazole can suppress shoot growth by inducing stress-adaptive responses and inhibiting gibberellin synthesis, respectively. We evaluated the effectiveness of the two growth regulators in prolonging marketability of ‘Florida 91’ and ‘Mariana’ tomato (Solanum lycopersicum L.) transplants at commercial nursery greenhouses in Texas and Florida. Spray treatments in the Texas experiment were 0 and 3.8 mm ABA at 7, 5, 3, or 1 days before maturity (DBM), and those in the Florida experiment were no spray control, 3.8 mm ABA at 7, 5, 3, or 1 DBM, and 34 μm uniconazole at 4 DBM. Both ABA and uniconazole showed minimal cultivar-specific effects. Different growth modifications were induced by ABA and uniconazole. First, suppression of stem elongation by ABA was reversible by 7 days after maturity (DAM), whereas that by uniconazole lasted for 20 days or until 16 DAM with up to 15% suppression in stem elongation. Second, only ABA inhibited leaf expansion and shoot dry matter accumulation. The primary growth-modulating effect of uniconazole was limited to height control, which is beneficial for producing compact transplants, rather than as a growth holding strategy. By contrast, the overall growth suppression by ABA is desirable for prolonging transplant marketability. Importantly, the magnitude of this growth suppression was moderate (up to 22% shoot biomass reduction at 8 DAM) and transient, followed by a rapid recovery. Furthermore, ABA caused relatively smaller inhibition in root growth, allowing sufficient root development and increasing the root-to-shoot ratio at 0 to 8 DAM. The growth suppression by ABA was maximal when it was applied at 7 to 5 DBM, indicating the age-dependent sensitivity of tomato seedlings to exogenous ABA. Although leaf chlorosis was induced by ABA in a similar age-dependent manner, it was transient and reversible by 7 DAM. These results suggest that ABA application 7 to 5 DBM is an effective growth holding strategy for tomato transplants.
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Fu, Ting Ting, Heather C. Kaplan, Trayce Fields, Alonzo T. Folger, Katelyn Gordon, and Brenda B. Poindexter. "Protein Enrichment of Donor Breast Milk and Impact on Growth in Very Low Birth Weight Infants." Nutrients 13, no. 8 (August 20, 2021): 2869. http://dx.doi.org/10.3390/nu13082869.

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Protein content is often inadequate in donor breast milk (DBM), resulting in poor growth. The use of protein-enriched target-pooled DBM (DBM+) has not been examined. We compared three cohorts of very low birth weight (VLBW) infants, born ≤ 1500 g: DBM cohort receiving > 1-week target-pooled DBM (20 kcal/oz), MBM cohort receiving ≤ 1-week DBM, and DBM+ cohort receiving > 1-week DBM+. Infants followed a standardized feeding regimen with additional fortification per clinical discretion. Growth velocities and z-scores were calculated for the first 4 weeks (n = 69 for DBM, 71 for MBM, 70 for DBM+) and at 36 weeks post-menstrual age (n = 58, 64, 59, respectively). In total, 60.8% MBM infants received fortification >24 kcal/oz in the first 30 days vs. 78.3% DBM and 77.1% DBM+. Adjusting for SGA, length velocity was greater with DBM+ than DBM in week 1. Average weight velocity and z-score change were improved with MBM compared to DBM and DBM+, but length z-score decreased similarly across all groups. Incidences of NEC and feeding intolerance were unchanged between eras. Thus, baseline protein enrichment appears safe in stable VLBW infants. Weight gain is greatest with MBM. Linear growth comparable to MBM is achievable with DBM+, though the overall length trajectory remains suboptimal.
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Honsawek, Sittisak, Piyanuch Bumrungpanichthaworn, Voranuch Thanakit, Vachiraporn Kunrangseesomboon, Supamongkon Muchmee, Siriwimon Ratprasert, Pruksapon Tangchainavaphum, et al. "Osteoinductive potential of small intestinal submucosa/ demineralized bone matrix as composite scaffolds for bone tissue engineering." Asian Biomedicine 4, no. 6 (December 1, 2010): 913–22. http://dx.doi.org/10.2478/abm-2010-0119.

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Abstract Background: Demineralized bone matrix (DBM) is extensively used in orthopedic, periodontal, and maxillofacial application and investigated as a material to induce new bone formation. Small intestinal submucosa (SIS) derived from the submucosa layer of porcine intestine has widely utilized as biomaterial with minimum immune response. Objectives: Determine the osteoinductive potential of SIS, DBM, SIS/DBM composites in the in vitro cell culture and in vivo animal bioassays for bone tissue engineering. Materials and methods: Human periosteal (HPO) cells were treated in the absence or presence SIS, DBM, and SIS/DBM. Cell proliferation was examined by direct cell counting. Osteoblast differentiation of the HPO cells was analyzed with alkaline phosphatase activity assay. The Wistar rat muscle implant model was used to evaluate the osteoinductive potential of SIS, DBM, and SIS/DBM composites. Results: HPO cells could differentiate along osteogenic lineage when treated with either DBM or SIS/DBM. SIS/ DBM had a tendency to promote more cellular proliferation and osteoblast differentiation than the other treatments. In Wistar rat bioassay, SIS showed no new bone formation and the implants were surrounded by fibrous tissues. DBM demonstrated new bone formation along the edge of old DBM particles. SIS/DBM composite exhibited high osteoinductivity, and the residual SIS/DBM was surrounded by osteoid-like matrix and newly formed bone. Conclusion: DBM and SIS/DBM composites could retain their osteoinductive capability. SIS/DBM scaffolds may provide an alternative approach for bone tissue engineering.
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Engle-Stone, Reina, Junjie Guo, Sanober Ismaily, O. Yaw Addo, Tahmeed Ahmed, Brietta Oaks, Parminder S. Suchdev, Rafael Flores-Ayala, and Anne M. Williams. "Intraindividual double burden of overweight and micronutrient deficiencies or anemia among preschool children." American Journal of Clinical Nutrition 112, Supplement_1 (August 1, 2020): 478S—487S. http://dx.doi.org/10.1093/ajcn/nqaa101.

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ABSTRACT Background Child overweight prevalence is increasing globally, but micronutrient deficiencies persist. Objectives We aimed to 1) describe the prevalence and distribution of intraindividual double burden of malnutrition (DBM), defined as coexistence of overweight or obesity (OWOB) and either micronutrient deficiencies or anemia, among preschool children; 2) assess the independence of DBM components, e.g., whether the prevalence of DBM is greater than what would be expected by chance; and 3) identify predictors of intraindividual DBM, to guide intervention targeting. Methods We analyzed data from 24 population-based surveys from the Biomarkers Reflecting Inflammation and Nutritional Determinants of Anemia project (separately by survey; n = 226 to n = 7166). We defined intraindividual DBM as coexisting OWOB and ≥1 micronutrient deficiency [e.g., Micronutrient Deficiency Index (MDI) > 0; DBM-MDI] or anemia (DBM-Anemia). We assessed independence of DBM components with the Rao–Scott chi-square test and examined predictors of DBM and its components with logistic regression. Results DBM prevalence ranged from 0% to 9.7% (median: 2.5%, DBM-MDI; 1.4%, DBM-Anemia), reflecting a lower prevalence of OWOB (range: 0%–19.5%) than of micronutrient deficiencies and anemia, which exceeded 20% in most surveys. OWOB was generally not significantly associated with micronutrient deficiencies or anemia. In more than half of surveys, children 6–23 mo of age, compared with ≥24 mo, had greater adjusted odds of DBM-Anemia, anemia, and micronutrient deficiencies. Child sex and household socioeconomic status, urban location, and caregiver education did not consistently predict DBM or its components. Conclusions Intraindividual DBM among preschool children was low but might increase as child OWOB increases. The analysis does not support the hypothesis that DBM components cluster within individuals, suggesting that population-level DBM may be addressed by programs to reduce DBM components without targeting individuals with DBM.
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Resca, Davide, Rafael Cignani, Corrado Florian, Andrea Biondi, and Francesco Scappaviva. "A Q/Ku-K band MMIC double-balanced subharmonic diode ring mixer for satellite communications in GaAs pHEMT technology." International Journal of Microwave and Wireless Technologies 7, no. 2 (May 14, 2014): 107–13. http://dx.doi.org/10.1017/s1759078714000695.

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A MMIC double-balanced subharmonic diode ring mixer was designed for broadband satellite communications exploiting a GaAs pHEMT process. The circuit implements the frequency conversion from Q (43.5–50 GHz) to Ku-K band (17–21.5 GHz). Besides the RF, LO, and IF baluns, the MMIC integrates a buffer amplifier for the local oscillator signal, which is designed between X and Ku bands (11–16.5 GHz), due to the subharmonic operation. The mixer measured conversion loss is between 8 and 12 dB along the bandwidth, with an LO power of 9 dBm. The input p1 dB and IP3 are 2 and 15 dBm, respectively. The balanced structure ensures an LO and 2 × LO leakages at the IF port lower than −25 and −35 dBm, respectively. Other spurious remain below −67 dBc. The chip dimensions are 2.4 × 2.4 mm2.
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Dissertations / Theses on the topic "DBM"

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Kallerud, Torjus Selvén. "A 10 dBm 2.4 GHz CMOS PA." Thesis, Norwegian University of Science and Technology, Department of Electronics and Telecommunications, 2006. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9317.

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This report describes the assessment and design of a 10 dBm 2.4 GHz CMOS PA including driver stage. The PA is designed in a 0.18 um CMOS technology. A three stage PA has been designed due to the high voltage gain needed. Class F has been chosen for the output stage. An output filter short-circuiting the second harmonic frequency and reflecting the third harmonic frequency is used to obtain the near-square drain voltage that is characteristic to class F. A lowered supply voltage of 0.9 V is used to avoid exceeding the transistor break-down voltage of 2 V. The typical output power achieved is 10.2 dBm. The drain efficiency of the output stage is 47.7 %, and the PAE of the entire PA is 30.5 %. The final layout excluding bonding pads consumes an area of 0.66 mm2, including four internal inductors consuming a total of 0.59 mm2. The PAE obtained is higher than those of a selection of recently published PAs that are comparable in technology, frequency and output power.

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Claros, Rocabado Vladimir. "Influencia del uso de un modelo "Data Based Mechanistical" (DBM) en resultados de modelos hidrológicos continuos aplicados a cuencas alteradas." Tesis, Universidad de Chile, 2018. http://repositorio.uchile.cl/handle/2250/151777.

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Magíster en Ciencias de la Ingeniería, Mención Recursos y Medio Ambiente Hídrico
Determinar de forma confiable y anticipada la cantidad de agua que puede generar una cuenca como respuesta a las forzantes meteorológicas a las que es sometida, es fundamental para la planificación y optimización del uso de este recurso. Un requisito fundamental para determinar esta relación, es contar con caudales correspondientes al estado natural de la cuenca (Cuencas inalteradas) para realizar la calibración, sin embargo, muchas veces, no se cuenta con mediciones en las zonas que desean estudiarse (cuencas no controladas) o las mediciones registradas, no corresponden al caudal natural de la cuenca, debido a extracciones, tomas no contabilizadas, desvíos, etc. El objetivo de este estudio es proponer y analizar una metodología que permita obtener simulaciones con coeficientes de eficiencia aceptables, de los valores registrados en sistemas que tienen un registro de caudal acotado (alterado) registrando sólo parcialmente los caudales generados por la cuenca. Para alcanzar el objetivo, como primer paso, se modela la zona estudiada, aplicando los programas HEC-HMS y MIKE-NAM en modo continuo, para evaluar su capacidad y limitantes para representar el fenómeno, siguiendo las bases teóricas que se sustentan las buenas prácticas del uso de estos modelos. Posteriormente, al verificar la incapacidad de los modelos utilizados de representar de forma adecuada los hidrogramas registrados, se utiliza una herramienta basada en la teoría de Modelos mecanísticos basados en datos (DBM) denominada Conceptual developer Model (CMD), para que la misma en base a los datos obtenidos utilizando los modelos hidrológicos y los datos registrados, simule la operación de la obra de toma que es la que gobierna la cantidad de agua que se capta de la cuenca y es posible de ser registrada. Como resultado de este trabajo se obtiene que una vez aplicado el CMD, pueden generarse hidrogramas comparables a los observados, con coeficientes de eficiencia de Nash Sutcliffe de hasta 0.89. Los resultados obtenidos, reflejan que a través de este procedimiento se puede obtener un pronóstico confiable de los caudales captados, lo cual contribuye en el caso estudiado a la implementación de un sistema de pronóstico a corto plazo (escala semanal como máximo) de caudales aportantes al sistema para la generación hidroeléctrica.
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GHAITH, AFIF. "LEBANESE SUBMARINE CANYONS AND THEIR ROLE IN SEDIMENT TRANSFER FROM SHALLOW TO DEEP WATER." Doctoral thesis, Università degli studi di Ferrara, 2020. http://hdl.handle.net/11392/2488030.

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Submarine mass movements and their consequences are of major concern for coastal communities and infrastructures but also for the exploitation and the development of seafloor resources. Elevated awareness of the need for better understanding of the underwater mass movement is coupled with great advances in underwater mapping technologies over the past two decades. The seafloor in the Bay of Jounieh and Beirut North (Lebanon) is characterized by deep canyons, reaching one thousand meters depths in proximity of the coast. Signs of submarine mass movement instability related to these canyons create a connection between shallow and deep water. The presence of these canyons in a tectonically active area generates a particular drained mechanism to the sediment in form of mass movement and slumping. Since this area is poorly explored, in the framework of an international project between Lebanese Navy Hydrographic Service, Lebanese National Center for Marine Sciences, University of Ferrara and Italian Navy Hydrographic Institute, we analyse the morpho-bathymetric and sedimentological characters of the coastal and shelf sectors. Multibeam echosounder and sub-bottom profiler acoustic systems calibrated with ground truths (sediment grabs) in accordance to the International Hydrographic Standards allow us to characterize the nature of seafloor and sub-seafloor. The detection of particular undersea features provides detail maps which are in support to littoral morpho-dynamics, coastal transport and sediment budget. This high resolution multibeam bathymetry dataset, integrated by the sedimentological characters, will provide useful constraints to the potential natural hazards that may be caused by active tectonics in the offshore and a high coastal risk in one of the most populated region of Lebanon. The study aims to evaluate the role of the area's submarine canyons in the underwater mass movements, taking into account: 1) the evaluation of the environmental condition of the Jounieh Bay, 2) the sediment deposit dynamics along and across the Lebanese continental shelf and slope, and finally 3) the sediment movement inside canyons heads in the Jounieh-Beirut Basin. The above studies allowed us to discover that although canyons in the research's area belong to the same continental margin, share more or less the same morphology and are located few kilometres apart, they display a relevant variability in their geometry, morphology, sedimentary processes, and where the SW current is the main governing cause of sediment movement, and to highlight the important role that the Jounieh-Beirut Basin plays in the Lebanese underwater dynamics, comparing its status in 2019 with a previous work achieved by Goedicke and Sagebiel (1976).
I movimenti di massa sottomarini con le loro conseguenze sono di un grande interesse per le comunità e le infrastrutture costiere e anche per lo sfruttamento e lo sviluppo delle risorse del fondale marino. L’elevata consapevolezza della necessità di una migliore comprensione del movimento di massa sottomarino è accompagnata da grandi avanzamenti nelle tecnologie di rilievi sottomarini durante gli ultimi due decenni. Il fondale marino nella baia di Jounieh e del Nord di Beirut (Libano) è caratterizzato dalla presenza di profondi canyons che raggiungono mille metri di profondità in prossimità della costa. I segni dell’instabilità del movimento di massa sottomarino relativi a tali canyons creano una connessione tra acque basse e acque profonde. La presenza di questi canyons in un’area tettonicamente attiva genera un particolare meccanismo di drenaggio del sedimento sotto la forma di movimento di massa e di crolli. Visto che l’area è poco esplorata, nel contesto di un progetto internazionale tra il servizio idrografico della Marina Libanese, il centro nazionale libanese per le scienze del mare, l’Università di Ferrara e l’istituto idrografico della Marina Militare Italiana, analizziamo i caratteri morfo-batimetrici e sedimentari dei settori costieri e della piattaforma continentale. Gli ecoscandagli multifasci ed i sistemi acustici ‶Sub-bottom profilers″, calibrati con dati reali (raccolta di sedimenti), in conformità con gli standard internazionali dell’idrografia, ci permettono di caratterizzare la natura del fondale e del sotto fondale. La rivelazione di oggetti sottomarini particolari fornisce delle mappe di dettaglio a supporto di analisi di morfodinamica litorale, trasporto costiero e budget sedimentario. Questi dati batimetrici da sistemi multifasci di alta risoluzione, integrati con i caratteri sedimentologici, forniscono dati utili per potenziali rischi naturali che potrebbero essere causati da tettonica attiva nella zona offshore, e per un alto rischio costiero in una delle regioni le più popolate del Libano. Questo studio ha lo scopo di valutare il ruolo dell’area dei canyons sottomarini nei movimenti di massa sottomarini, considerando: 1- La valutazione della condizione ambientale della baia di Jounieh. 2- Le dinamicità del deposito sedimentario lungo e attraverso la piattaforma continentale e lo slope libanese e finalmente, 3- Il movimento del sedimento nelle teste dei canyons nel bacino Jounieh-Beirut. Questi studi ci hanno permesso di scoprire che i canyons nell’area di ricerca nonostante la loro appartenenza allo stesso margine continentale, la condivisione più o meno della stessa morfologia e la loro presenza a pochi chilometri l’uno a altro, mostrino una relativa variabilità nella loro geometria, morfologia, e processi sedimentari, la corrente SW è la causa principale che controlla il movimento del sediment. Lo studio evidenzia il ruolo importante che il bacino di Jounieh-Beirut gioca nella dinamicità sedimentaria dei fondali libanesi, anche grazie al confronto tra il suo stato attuale (2019) e la situazione nel 1976.
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Fawcett, Christopher P. "Data-based mechanistic modelling (DBM) of nonlinear environmental systems." Thesis, Lancaster University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310479.

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Vieira, Marcos Rodrigues. "DBM-tree: método de acesso métrico sensível à densidade local." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/55/55134/tde-27072004-141623/.

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Um espaço métrico é definido por um conjunto de objetos e uma função de distância métrica, que é utilizada para avaliar o nível de similaridade entre estes objetos. Isto permite a elaboração de Métodos de Acesso Métricos (MAMs) capazes de responder consultas por similaridade nesses conjuntos em um tempo reduzido. Em geral, esses MAMs são materializados através de uma estrutura hierárquica chamada de árvore métrica. Normalmente essas árvores são mantidas balanceadas, pois isto tende a manter a altura da árvore mínima, reduzindo o número de acessos a disco necessários para responder às consultas. No entanto, é difícil manter as estruturas balanceadas sem a existência de sobreposição entre os nós que cobrem regiões de alta densidade de objetos. O efeito disto é a degradação do tempo das consultas, pois várias subárvores devem ser analisadas para compor as consultas. Em outras palavras, minimizar a sobreposição entre os nós aumenta a eficiência das árvores métricas. Um meio efetivo para isto é flexibilizar o balanceamento das árvores métricas. Este trabalho apresenta um novo MAM dinâmico, chamado de DBM-tree (Density-Based Metric tree), que permite flexibilizar o balanceamento da estrutura, minimizando o grau de sobreposição entre os nós em regiões densas e, conseqüentemente, aumentando o seu desempenho para responder às consultas. Essa flexibilização é ajustada pelo usuário e é rigidamente controlada pela estrutura. A profundidade da árvore é maior em regiões de alta densidade, procurando um equilíbrio entre o número de acessos a disco para avaliar múltiplas subárvores e para a busca em profundidade em cada subárvore. A DBM-tree possui um algoritmo de otimização chamado de DBM-Slim-Down, que melhora o desempenho das árvores através da reorganização de elementos entre os seus nós. Os experimentos feitos com dados reais e sintéticos mostram que a DBM-tree supera em desempenho os MAMs tradicionais. Ela é, em média, 50% mais rápida que os MAMs tradicionais e reduz o número de acessos a disco e cálculos de distância em até 50%. Depois de executado o algoritmo DBM-Slim-Down, o seu desempenho melhorou em até 30% para as consultas por abrangência e aos vizinhos mais próximos. Ainda, a DBM-tree é escalável considerando tempo total de processamento, número de acessos a disco e de cálculos de distância em relação ao tamanho do conjunto de dados indexado.
A metric space is defined as a set of objects and a metric distance function that is used to measure the similarity between these objects. It allows the development of Metric Access Methods (MAMs) that are able to answer similarity queries in these datasets quickly. Usually these MAMs are materialized through a hierarchical structure called metric trees. These trees are kept balanced because it tends to maintain the height of the tree small, aiming to reduce the number of disk access required to answer queries. However, it is difficult to maintain the tree balanced without overlapping nodes covering a large number of objects, leading to the degradation of query performance. In other words, reducing the overlap among nodes increases the performance of metric trees. A possible solution is to relax the need to keep metric trees balanced. This work presents a new dynamic MAM called DBM-tree (Density-Based Metric tree), which changes the rule that imposes a rigid balancing policy, allowing a small amount of unbalancing in some regions of it. This unbalancing minimizes the degree of overlapping among some high-density nodes and, consequently, increases query answering performance. The amount of relaxation is set by the user and is strongly enforced in the tree. The height of the tree is higher in high-density regions, in order to keep a balance between searching in various subtrees and searching deeply in each subtree. The DBM-tree has an optimization algorithm called DBM-Slim-Down that improves the performance in trees through reorganizing the elements among its nodes. The experiments performed over synthetic and real-world datasets showed that the DBM-tree outperforms the traditional MAMs. The DBM-tree is, in average, 50% faster than traditional MAMs and reduces the number of distance calculations and disk accesses up to 50%. After executing the DBM-Slim-Down algorithm, the performance achieves improvements up to 30% for range and k-nearest neighbor queries. Moreover, the DBM-tree is scalable regarding time, number of disk accesses and distance calculations.
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Arnold, Stephanie Lorraine. "An in vitro evaluation of DBM as a tissue engineered scaffold." Connect to this title online, 2007. http://etd.lib.clemson.edu/documents/1193079966/.

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Rajagopalan, Vidya. "Increasing DBM Reliability using Distribution Independent Tests and Information Fusion Techniques." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/30158.

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In deformation based morphometry (DBM) group-wise differences in brain structure are measured using deformable registration and some form of statistical test. However, it is known that DBM results are sensitive to both the registration method and statistical test used. Given the lack of an objective model of group variation it has been difficult to determine the extent of the influence of registration implementation or contraints on DBM analysis. In this thesis, we use registration methods with varying levels of theoretic similarity to study the influence of registration mechanics on DBM results. We show that because of the extent of the influence of registration mechanics on DBM results, analysis of changes should always be made with a thorough understanding of the registration method used. We also show that minor variations in registration methods can lead to large changes in DBM results. When using DBM, it would be imprudent to use only one registration method to draw any conclusions about the variations being studied. In order to provide a more complete representation of inter-group changes, we propose a method for combining multiple registration methods using Dempster-Shafer evidence theory to produce belief maps of categorical changes between groups. We show that the Dempster-Shafer combination produces a unique and easy to interpret belief map of regional changes between and within groups without the complications associated with hypothesis testing. Another, often confounding, element of DBM is the parametric hypothesis test used to specify voxels undergoing significant change between the two groups. The accuracy and reliability of these tests are contingent on a number of fundamental assumptions made about the distribution of the data used in the tests. Many DBM studies often overlook these assumptions and fail to verify their validity for the data being tested. This raises many doubts about the credibility of the results from such tests. In this thesis, we propose to perform statistical analysis on DBM data using nonparametric, distribution independent hypothesis tests. With no data distributional assumptions, these tests provide both increased flexibility and reliability of DBM statistical analysis
Ph. D.
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Blice, Rebecca L. "EFFICACY OF DEMINERALIZED BONE MATRIX AS AN OSTEOINDUCTIVE AGENT WHEN USING A BETA-TRICALCIUM PHOSPHATE CARRIER." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1162918440.

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Liese, Juliane [Verfasser]. "Humane demineralisierte Knochenmatrix (DBM) im Tissue Engineering von humanem Knorpelgewebe / Juliane Liese." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2009. http://d-nb.info/1027813879/34.

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Osorio, Gutierrez Jessica Aquilina. "Desarrollo de un proceso integrador basado en ampliaciones SAP en el módulo DBM." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2018. https://hdl.handle.net/20.500.12672/15137.

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En los proyectos de implementación de SAP siempre surgen requerimientos complejos en los cuales se necesita gente especializada en consultoría funcional y técnica ABAP. Este es el caso mencionado en el presente informe profesional, en la cual en plena implementación del Módulo DBM en una de las empresas concesionarios más importantes de país, surgió un requerimiento complejo el cual en una intensa evaluación por parte del consultor funcional no se pudo solucionar por configuración. Esto hizo que surja la necesidad de la creación de un requerimiento para que sea desarrollado, en él se detalló los flujos según escenarios detallados en la fase 1 y 2 de la metodología ASAP. Al ser un requerimiento complejo en desarrollo se me fue asignado ya que poseo los conocimientos necesarios para poder desarrollarlo. El requerimiento en mención es lo que se detalla en el presente informe y se hace énfasis en la fase de realización, en la cual se detalla el uso de las ampliaciones SAP, seleccionadas previo análisis en cada uno de los escenarios descritos en la especificación funcional. A su vez se describen los escenarios adicionales los cuales surgieron en la etapa de pruebas unitaria e integrales. El informe también detalla las buenas prácticas en cuanto al uso de técnicas de modularización en la programación ABAP. Como resultado de este desarrollo se tuvo una buena salida en vivo y soporte post-productivo, lo cual permite que la empresa pueda venderlo como paquete de solución a otros clientes que implementen el módulo DBM en sus empresas.
Trabajo de suficiencia profesional
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Books on the topic "DBM"

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Son, Wŏn-yong. DBM i pʻoham toen kol chʻungjŏnjae ŭi anjŏngsŏng pʻyŏngka kisul kaebal =: A study of safety evaluation of DBM as bone void filler. [Seoul]: Sikpʻum Ŭiyakpʻum Anjŏnchʻŏng, 2007.

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National Mineral Development Corporation Limited., ed. Environmental impact assessment of proposed DBM plant at Panthal (J & K). Secunderabad: Vimta Labs, 1991.

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Kokuritsu Kokkai Toshokan shozō Meijiki kankō tosho maikuro-ban shūsei: Bungaku : Edo shōsetsu, DBM. Tōkyō: Maruzen, 1991.

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Ed, Sander, ed. Event driven marketing: Op het juiste moment, het juiste aanbod, bij de juiste klant. Amsterdam: Kluwer, 2004.

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Marinho, Tony, and Taslim Abiola Layonu. A life of charity: Essays and tributes in honour of Chief (Dr.) Raymond Zard, J.P., OFR, LL.D. (Hon.) JP ,FCVSN, DBM (Hon.) (A.k.a. Ray of Hope). Agbowo, Ibadan: Media Report Projects, 2013.

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Corp, Computer Technology Research, ed. DB2: IBM's DBMS strategy for the 1990s. Holtsville, N.Y: Computer Technology Research Corp., 1989.

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Nombre, Adama. La sécurité des barrages au Burkina Faso. [Burkina Faso]: A. Nombre, 1995.

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Philippines. Salient features of the Government Procurement Reform Act: With RA 9184, implementing rules, DBM circulars on honoria and overtime, EO 109-A, Flag Law, RA #912, Magna Carta on Small Enterprises, Retail Trade, Anti Graft & Corrupt Practices Act and Act Declaring Forfeiture of Ill-Gotten Wealth. 2nd ed. [Cagayan de Oro City, Philippines]: Published and printed by Iwag Print. and Pub., 2004.

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Marche, Claude. Barrages, crues de rupture, et protection civile. 2nd ed. [Montréal]: Presses internationales Polytechnique, 2008.

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Dam Safety Seminar (1986 Edmonton, Alta.). Proceedings of Dam Safety Seminar, Edmonton, Alberta, September/86. Vancouver, B.C: BiTech, 1986.

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Book chapters on the topic "DBM"

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Weik, Martin H. "dBm." In Computer Science and Communications Dictionary, 364. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_4432.

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Weik, Martin H. "dBm(psoph)." In Computer Science and Communications Dictionary, 365. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_4433.

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Bährle-Rapp, Marina. "VA/DBM Copolymer." In Springer Lexikon Kosmetik und Körperpflege, 577. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_10940.

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Weik, Martin H. "psophometrically weighted dBm." In Computer Science and Communications Dictionary, 1364. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_15026.

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Weik, Martin H. "dBm transmission level point." In Computer Science and Communications Dictionary, 365. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_4434.

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Weik, Martin H. "zero-dBm transmission level point." In Computer Science and Communications Dictionary, 1941. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_21319.

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Eargle, John M. "Power Ratios Expressed in dBm." In Electroacoustical Reference Data, 208–9. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2027-6_101.

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Young, Peter C. "Data-Based Mechanistic (DBM) Modelling." In Recursive Estimation and Time-Series Analysis, 357–81. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21981-8_12.

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Wiemer, Wolfgang, Jürgen Heuser, Manfred Schmidtmann, and Stefan Dylka. "Datenbank Baugeometrie des Mittelalters (MILES/DBM)." In PC-Einsatz in der Hochschulausbildung, 67–74. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84839-1_11.

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Pennisi, Antonino, and Alessandra Falzone. "Comparing Two Models: CBM vs DBM." In Perspectives in Pragmatics, Philosophy & Psychology, 81–85. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-47688-9_6.

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Conference papers on the topic "DBM"

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Ocsa, Alexander, and Ernesto Cuadros-Vargas. "DBM*-Tree." In the 45th annual southeast regional conference. New York, New York, USA: ACM Press, 2007. http://dx.doi.org/10.1145/1233341.1233414.

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Arbelaez-Nieto, A., A. Corona-Chavez, J. L. Olvera-Cervantes, and C. E. Saavedra. "Active CMOS differential filter with +3.5 dBm IP1dB and +12.3 dBm IIP3." In 2016 IEEE MTT-S Latin America Microwave Conference (LAMC). IEEE, 2016. http://dx.doi.org/10.1109/lamc.2016.7851262.

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Jayasuriya, A. Champa, Elisabeth Michels, and Nabil A. Ebraheim. "Demineralized Bone Matrix Incorporated PLGA Matrices." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14796.

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Poly(lactic-co-glycolic acid)-PLGA (85:15) films incorporated with demineralized bone matrix (DBM) powder with the weight ratio of polymer: DBM (75:25) were investigated for release of agents including osteoinductive (OI) factors during the 80 day period exposing to Phosphate Buffered Saline (PBS) at 37 °C. The release amount of agents including OI factors from DBM/PLGA matrices were more than 2-fold higher at 70 days than at 10 days, respectively. This result demonstrated that controlled release of OI factors can be achieved for extended time period at target site using PLGA as a carrier for DBM powder. Murine Bone Marrow Stromal Cell (BMSC) attachment was studied with different time points at 30 min, 1 h, 2 h, 4 h, 6 h and 24 h for DBM/PLGA and PLGA control matrices. Significantly higher number of BMSCs was attached to the DBM/PLGA matrices at each time points compared with controls. This result suggests that BMSCs favor to attach the surfaces having OI properties. If DBM is incorporated into biodegradable 3-D polymer scaffolds and culture with BMSCs, those scaffolds could be potentially used for bone tissue engineering applications.
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Cu, W. Y., C. S. Ih, R. S. Tian, and X. L. Wang. "Signal-to-noise ratio analyses for FM double-beam modulation systems." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.thz2.

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We have recently suggested a double-beam modulation (DBM) method for broadband optical communications. A new DBM using frequency locked lasers (FLL) has been recently demonstrated. The DBM automatically creates a subcarrier upon detection by a photo detector. The new DBM-FLL can generate very high subcarrier frequencies that can also be easily tuned. So far we have been able to tune the frequency from several gigahertz to 15 GHz; the frequency range is currently limited by the detector and electronics.
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Tian, R. S., and Charles S. Ih. "Experiments of a DBM broadband communication system." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1989. http://dx.doi.org/10.1364/oam.1989.wx3.

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An optical communication system by which broadband analog and high speed digital information is transmitted simultaneously can be implemented using radio frequency (rf) or microwave subcarrier multiplexing (SCM). This system can also be used for general broadband communications if we can use subcarriers of tens of gigahertz.1 Therefore we call this system MDM (microwave division multiplexing). However, because of the nonlinearity of laser modulation, serious intermodulation occurs especially in the high frequency range. Double-beam modulation (DBM) has been suggested and demonstrated using a standing wave acoustooptic modulator (SWAOM) to 1.2 GHz. Compared with intensity modulation, the DBM system induces less harmonic distortion and intermodulation. The DBM can be implemented in many forms.
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Xie, Jiawu, Jie Chen, and Jian Zhang. "DBM-Based Underwater Acoustic Source Recognition." In 2018 IEEE International Conference on Communication Systems (ICCS). IEEE, 2018. http://dx.doi.org/10.1109/iccs.2018.8689186.

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Zhou, Guoqing, Hongjun Sha, Haoyu Wang, Tao Yue, and Bin Jia. "Building Shadow Determination Based on Dbm." In IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2019. http://dx.doi.org/10.1109/igarss.2019.8900555.

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Chen, Jun, Benqing Guo, Boyang Zhang, and Guangjun Wen. "A 4 dBm IP1dB 20.8 dBm UP3 wideband complementary SF feedback LNTA with derivative superposition method." In 2016 IEEE International Symposium on Circuits and Systems (ISCAS). IEEE, 2016. http://dx.doi.org/10.1109/iscas.2016.7538999.

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Wang, X. L., R. S. Tian, C. S. Ih, and W. Y. Gu. "Broadband optical communications using double-beam modulation to 15 GHz." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.thz3.

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We have recently demonstrated a double beam modulation (DBM) method using frequency locked lasers (FLL). The DBM automatically creates a subcarrier upon detection by a photodetector. The subcarrier frequencies can be easily tuned. So far we are able to vary the frequency from several GHz to 15 GHz, which is currently limited by the detector and electronics. Therefore the DBM-FLL modulators are the natural building blocks for the SCM (Sub-Carrier Multiplexing) light-wave system. Using the DBM-FLL modulators), we have demonstrated multi-channel broadband optical communications. Both the digital and analog signal can be transmitted simultaneously on a single fiber. Using close-spaced DBM carriers, all the carriers can be optically amplified. The major advantage of using DBM-FLL for SCM is that very high subcarrier frequency can be achieved (in tens of GHz) and that fiber induced distortions are minimized. Also since FM optical carrier(s) is used, the linearity of the laser diode may be more easily to overcome for analog transmissions. Utilizing the FLL modulator within its modulation limits, any broadband analog signals, such as TV VHF band (lower and upper band plus FM radio), CATV channels, and even TV UHF band, can be readily FM modulated onto these subcarriers. The demodulated signals are directly compatible with standard TV or cable ready receivers. Experimental results will be presented and discussed.
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Al-Husseini, Z., S. Syed, P. V. Testa, G. Katzman, G. Bossu, Z. Zhao, S. Moss, and C. Tianbing. "A 28 GHz 22FDX® PA with 31.5 % Peak PAE and Output Power of 21 dBm in CW, 18.5 dBm in QPSK, and 12.5 dBm in 64QAM." In 2022 52nd European Microwave Conference (EuMC). IEEE, 2022. http://dx.doi.org/10.23919/eumc54642.2022.9924479.

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Reports on the topic "DBM"

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Soha, Aria, Andrej Gorisek, Marko Zavrtanik, Grygorii Sokhranyi, Garrin McGoldrick, and Matevz Cerv. ATLAS DBM Module Qualification. Office of Scientific and Technical Information (OSTI), June 2014. http://dx.doi.org/10.2172/1296767.

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Baker, Bryant. A 3.6 GHz Doherty Power Amplifier with a 40 dBm Saturated Output Power using GaN on SiC HEMT Devices. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.1780.

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Hillson, Todd, Sharon Lind, and William Price. McNary Dam, Ice Harbor Dam, and Lower Monumental Dam Smolt Monitoring Program; 1996 Annual Report. Office of Scientific and Technical Information (OSTI), July 1997. http://dx.doi.org/10.2172/563834.

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Schaefer, Marvin, Brian Hubbard, Dan Sterne, Theresa Haley, and Noelle McAuliffe. Secure DBMS Auditor. Fort Belvoir, VA: Defense Technical Information Center, July 1990. http://dx.doi.org/10.21236/ada225528.

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Hirst, E., J. Reed, B. Bronfman, G. Fitzpatrick, E. Hicks, E. Hirst, M. Hoffman, et al. Handbook of evaluation of utility DSM programs. [Demand-Side Management (DSM)]. Office of Scientific and Technical Information (OSTI), December 1991. http://dx.doi.org/10.2172/5688885.

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Warren, Thomas L., J. J. Howard, and Douglas H. Merkle. The Post-Dam System. Volume 2. Post-Dam Expert System (PDES). Fort Belvoir, VA: Defense Technical Information Center, October 1992. http://dx.doi.org/10.21236/ada270114.

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Zhang, Boning, Eric B. Herbold, Michael A. Homel, and Richard A. Regueiro. DEM Particle Fracture Model. Office of Scientific and Technical Information (OSTI), December 2015. http://dx.doi.org/10.2172/1235391.

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Eckerlin, Richard D., and Dennis Larson. Wynoochee Dam Foundation Report. Fort Belvoir, VA: Defense Technical Information Center, January 1988. http://dx.doi.org/10.21236/ada207425.

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Deen, J. R., W. L. Woodruff, and C. I. Costescu. WIMS-D4M user manual. Office of Scientific and Technical Information (OSTI), July 1995. http://dx.doi.org/10.2172/197846.

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Park, Howard, and Michael Trawle. Hildebrand Lock and Dam. Fort Belvoir, VA: Defense Technical Information Center, July 1999. http://dx.doi.org/10.21236/ada367189.

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