Bibliographies thématiques / DGAHC

Littérature scientifique sur le sujet « DGAHC »

Auteur : Grafiati

Publié le 18 mai 2024

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Articles de revues sur le sujet "DGAHC"

Bennert, Thomas, Walter J. Papp, Ali Maher et Nenad Gucunski. « Utilization of Construction and Demolition Debris Under Traffic-Type Loading in Base and Subbase Applications ». Transportation Research Record : Journal of the Transportation Research Board 1714, n^o 1 (janvier 2000) : 33–39. http://dx.doi.org/10.3141/1714-05.

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As construction and remediation take place throughout New Jersey, the amount of construction and demolition debris increases, while the availability of landfill space decreases. A viable solution for disposing of these materials is to incorporate them into base and subbase applications. An extensive laboratory program was conducted on two types of construction and demolition debris: recycled concrete aggregate (RCA) and recycled asphalt pavement aggregate (RAP). These two materials were compared with dense-graded aggregate base coarse (DGABC), which currently is being used in roadway base applications in New Jersey. Both RCA and RAP were mixed at various percentages with the DGABC to evaluate whether an optimum mix blend could be formulated. The materials were evaluated under a traffic-type loading scheme that included resilient modulus and permanent deformation via cyclic triaxial testing. Laboratory tests indicated that the RAP, RCA, and DGABC blended materials all obtained higher resilient modulus values than the currently used DGABC. The permanent deformation results indicated that the RCA mixed samples obtained the lowest amount of permanent deformation when the material was cyclically loaded to 100,000 cycles. In contrast, the permanent deformation testing on RAP mixed samples resulted in the highest amount of permanent deformation at the same number of cycles. Existing models currently used for quarried base and subbase materials were used to predict the permanent deformation in the recycled materials. Laboratory test results indicated that these models could be used for predicting permanent deformation in unbound recycled materials.

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Abdelhakeem, Ahmed, Xuemei Wang, Rebecca E. Waters, Madhavi Patnana, Jeannelyn Estrella, Mariela A. Blum-Murphy, Allison Trail et al. « Localized diffuse-type gastric adenocarcinoma : Influence of baseline positron emission tomography on survival and therapy response. » Journal of Clinical Oncology 39, n^o 3_suppl (20 janvier 2021) : 176. http://dx.doi.org/10.1200/jco.2021.39.3_suppl.176.

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176 Background: Diffuse type of gastric adenocarcinoma (dGAC) confers a poor but variable prognosis compared to intestinal type of GAC. The value of baseline uptake of FDG-PET in localized dGAC is unclear and ~40% are not FDG-PET avid. We analyzed outcomes based on the avidity (high with SUV > 3.5 or low with SUV ≤3.5) of the primary on baseline FDG-PET. Methods: We retrospectively selected 111 localized dGAC cases who had baseline FDG-PET for staging. We compared the FDG-PET avidity with overall survival (OS) and response to preoperative therapy. Standard statistical methods were utilized. Results: The mean age was 59.4 years and with many female patients (47.7%). All patients had dGAC. The high-SUV group (58 [52.3%] patients) and the low-SUV group (53 [47.7%] patients) were equally divided. While the median OS for all patients was 49.5 months (95% CI: 38.5 – 98.8 months), it was 98.0 months for the low-SUV group and 36.0 months for the high-SUV ( p value = 0.003). While the median PFS for all patients was 38.2 months (95%CI: 27.7 – 97.6 months), it was 98.0 months for the low-SUV group was and 27.0 months for the high-SUV group ( p value = 0.005). Clinical responses before surgery were more common in the low-SUV group but there were only 4 patients with pathologic complete response in the entire cohort. Conclusions: Our unique data suggest that localized dGAC patients with low SUV fare better than those with high SUV meaning highly metabolic GACs consuming glucose confer poor prognosis and overall all dGACs seem resistant to therapy.

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Hou, Xiaoya, Jianbo Cheng, Shujuan Hu et Guolin Feng. « Interdecadal Variations in the Walker Circulation and Its Connection to Inhomogeneous Air Temperature Changes from 1961–2012 ». Atmosphere 9, n^o 12 (29 novembre 2018) : 469. http://dx.doi.org/10.3390/atmos9120469.

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The tropical Pacific Walker circulation (PWC) is fundamentally important to global atmospheric circulation, and changes in it have a vital influence on the weather and climate systems. A novel three-pattern decomposition of a global atmospheric circulation (3P-DGAC) method, which can be used to investigate atmospheric circulations including the PWC, was proposed in our previous study. Therefore, the present study aims to examine the capability of this 3P-DGAC method to acquire interdecadal variations in the PWC and its connection to inhomogeneous air temperature changes in the period from 1961–2012. Our findings reveal that interdecadal variations in the PWC, i.e., weakening (strengthening) between the periods 1961–1974 and 1979–1997 (1979–1997 and 1999–2012), can be observed using the zonal stream function (ZSF) derived from the 3P-DGAC method. Enhancement of the PWC is also associated with the strengthening and weakening of zonal circulations in the tropical Indian Ocean (IOC) and Atlantic (AOC), respectively, and vice versa, implying a connection between these zonal overturning circulations in the tropics. The interdecadal variations in the zonal circulations correspond well to inhomogeneous air temperature changes, i.e., an enhancement of the PWC is associated with a warming (cooling) of the air temperature from 1000 to 300 hPa in the western (mid–eastern) Pacific Ocean and a cooling (warming) of the air temperature in the tropopause in the western (mid–eastern) Pacific Ocean. Furthermore, a novel index for the PWC intensity based on air temperature is defined, and the capability of the novel index in representing the PWC intensity is evaluated. This novel index is potentially important for the prediction of the PWC by using dynamic equations derived from the 3P-DGAC method.

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Lin, Chun-Hui, Shyh-Hau Wang et Cheng-Jian Lin. « Interval Type-2 Neural Fuzzy Controller-Based Navigation of Cooperative Load-Carrying Mobile Robots in Unknown Environments ». Sensors 18, n^o 12 (28 novembre 2018) : 4181. http://dx.doi.org/10.3390/s18124181.

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In this paper, a navigation method is proposed for cooperative load-carrying mobile robots. The behavior mode manager is used efficaciously in the navigation control method to switch between two behavior modes, wall-following mode (WFM) and goal-oriented mode (GOM), according to various environmental conditions. Additionally, an interval type-2 neural fuzzy controller based on dynamic group artificial bee colony (DGABC) is proposed in this paper. Reinforcement learning was used to develop the WFM adaptively. First, a single robot is trained to learn the WFM. Then, this control method is implemented for cooperative load-carrying mobile robots. In WFM learning, the proposed DGABC performs better than the original artificial bee colony algorithm and other improved algorithms. Furthermore, the results of cooperative load-carrying navigation control tests demonstrate that the proposed cooperative load-carrying method and the navigation method can enable the robots to carry the task item to the goal and complete the navigation mission efficiently.

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Dai, Yexin, Jie Ding, Jingyu Li, Yang Li, Yanping Zong, Pingping Zhang, Zhiyun Wang et Xianhua Liu. « N, S and Transition-Metal Co-Doped Graphene Nanocomposites as High-Performance Catalyst for Glucose Oxidation in a Direct Glucose Alkaline Fuel Cell ». Nanomaterials 11, n^o 1 (14 janvier 2021) : 202. http://dx.doi.org/10.3390/nano11010202.

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In this work, reduced graphene oxide (rGO) nanocomposites doped with nitrogen (N), sulfur (S) and transitional metal (Ni, Co, Fe) were synthesized by using a simple one-step in-situ hydrothermal approach. Electrochemical characterization showed that rGO-NS-Ni was the most prominent catalyst for glucose oxidation. The current density of the direct glucose alkaline fuel cell (DGAFC) with rGO-NS-Ni as the anode catalyst reached 148.0 mA/cm2, which was 40.82% higher than the blank group. The DGAFC exhibited a maximum power density of 48 W/m2, which was more than 2.08 folds than that of blank group. The catalyst was further characterized by SEM, XPS and Raman. It was speculated that the boosted performance was due to the synergistic effect of N, S-doped rGO and the metallic redox couples, (Ni2+/Ni3+, Co2+/Co3+ and Fe2+/Fe3+), which created more active sites and accelerated electron transfer. This research can provide insights for the development of environmental benign catalysts and promote the application of the DGAFCs.

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Garg, Navneet, et Damien Mounier. « Comparison of US (FAA) and French (DGAC) airport pavement HMA ». Road Materials and Pavement Design 14, sup1 (avril 2013) : 242–61. http://dx.doi.org/10.1080/14680629.2013.774760.

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Su, Kuo Ho, et Feng Hsiang Hsiao. « Design of GA-Based Control for Electrical Servo Drive ». Advanced Materials Research 201-203 (février 2011) : 2375–78. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.2375.

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An alternative control scheme including a directional genetic algorithm controller (DGAC) and a supervisory controller is developed to control the position of an electrical servo drive in this study. In the DGAC design, the spirit of gradient descent training is embedded in genetic algorithm (GA) to construct a main controller to search optimum control effort under possible occurrence of uncertainties. In order to ensure the system states around a defined bound region, a supervisory controller, which is derived in the sense of Lyapunov stability theorem, is added to adjust the control effort. Compared with enunciated GA control methods, the proposed control scheme possesses some salient advantages of simple framework, fewer executing time and good self-organizing properties even for nonlinear dynamical system. The effectiveness is demonstrated by simulation results, and its advantages are indicated in comparison with other GA control schemes for a field-oriented control induction motor drive.

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Reinhardt, Sarah L., Rebecca Boehm, Nicole Tichenor Blackstone, Naglaa H. El-Abbadi, Joy S. McNally Brandow, Salima F. Taylor et Marcia S. DeLonge. « Systematic Review of Dietary Patterns and Sustainability in the United States ». Advances in Nutrition 11, n^o 4 (13 mars 2020) : 1016–31. http://dx.doi.org/10.1093/advances/nmaa026.

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ABSTRACT Improving awareness and accessibility of healthy diets are key challenges for health professionals and policymakers alike. While the US government has been assessing and encouraging nutritious diets via the Dietary Guidelines for Americans (DGA) since 1980, the long-term sustainability, and thus availability, of those diets has received less attention. The 2015 Dietary Guidelines Advisory Committee (DGAC) examined the evidence on sustainable diets for the first time, but this topic was not included within the scope of work for the 2020 DGAC. The objective of this study was to systematically review the evidence on US dietary patterns and sustainability outcomes published from 2015 to 2019 replicating the 2015 DGAC methodology. The 22 studies meeting inclusion criteria reveal a rapid expansion of research on US dietary patterns and sustainability, including 8 studies comparing the sustainability of DGA-compliant dietary patterns with current US diets. Our results challenge prior findings that diets adhering to national dietary guidelines are more sustainable than current average diets and indicate that the Healthy US-style dietary pattern recommended by the DGA may lead to similar or increased greenhouse gas emissions, energy use, and water use compared with the current US diet. However, consistent with previous research, studies meeting inclusion criteria generally support the conclusion that, among healthy dietary patterns, those higher in plant-based foods and lower in animal-based foods would be beneficial for environmental sustainability. Additional research is needed to further evaluate ways to improve food system sustainability through both dietary shifts and agricultural practices in the United States.

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Yu, Bin, Zijian Zheng et Jianhua Dai. « K-DGHC : A hierarchical clustering method based on K-dominance granularity ». Information Sciences 632 (juin 2023) : 232–51. http://dx.doi.org/10.1016/j.ins.2023.03.012.

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ZHU, JIANLIN, JIN HUANG, DAICUI ZHOU, ZHONGBAO YIN, GUOPING ZHANG et QIANG HE. « SOFTWARE ARCHITECTURE RECOVERY THROUGH SIMILARITY-BASED GRAPH CLUSTERING ». International Journal of Software Engineering and Knowledge Engineering 23, n^o 04 (mai 2013) : 559–86. http://dx.doi.org/10.1142/s0218194013500162.

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Software architecture recovery is to gain the architectural level understanding of a software system while its architecture description does not exist. In recent years, researchers have adopted various software clustering techniques to detect hierarchical structure of software systems. Most graph clustering techniques focus on the connectivity between program elements, but unreasonably ignore the similarity which is also a key measure for finding elements of one module. In this paper we propose a novel hierarchy graph clustering algorithm DGHC, which considers both similarity and connectivity between program elements. During the transformation of program dependence graph edges representing similarity between elements are added. Then similar elements are grouped by density-based approaches. The alternative strategy is adopted to find groups of closely connected and similar elements. Meanwhile we adjust the contribution of connectivity and similarity by a flexible clustering algorithm based on short random walk model, which can obtain more structure information of software to find its multiple layers. Furthermore a new method called Multi-layer Propagation Gap is proposed to suggest stable layers of hierarchy clustering result as multiple layers of software system. Extensive experimental results illustrate the effectiveness and efficiency of DGHC in detecting hierarchy structure of software through comparison with various software clustering methods.

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Thèses sur le sujet "DGAHC"

Rai, Sumita. « District administration in Darjeeling and the Darjeeling Gorkha Autonomous Hill Council (DGAHC) : a study in the context of decentralization, democracy and development ». Thesis, University of North Bengal, 2007. http://hdl.handle.net/123456789/1297.

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Correa, Molina Evaristo. « Propuesta de una herramienta de control de gestión para el departamento de seguridad operacional de la DGAC ». Tesis, Universidad de Chile, 2015. http://repositorio.uchile.cl/handle/2250/167834.

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TESIS PARA OPTAR AL GRADO DE MAGISTER EN CONTROL DE GESTION
El objetivo de este trabajo, es proponer una herramienta de control de gestión para el Departamento de Seguridad Operacional (DSO) perteneciente a la Dirección General de Aeronáutica Civil (DGAC). Actualmente el control existente tiene más bien un enfoque presupuestario, el cual no siempre apoya la toma de decisiones. La industria aérea en Chile, ha experimentado grandes cambios, pasando por un marcado incremento en el tráfico aéreo, tanto nacional, como internacional. Lo anterior, hace imprescindible contar con un organismo regulador, normativo y fiscalizador potente, que estudie, adapte y aplique estrictamente la normativa internacional que regula la aviación civil. El DSO cuenta con un proceso de Planificación Estratégica, por lo que la implementación de un BSC contribuye a visualizar de forma rápida y sencilla los avances en el cumplimiento de los objetivos estratégicos, facilitando la toma de decisiones, frente a los cambios industriales mencionados. El trabajo comienza con el marco teórico, el cual sitúa y delimita la propuesta en dentro los principales conceptos que se aplican. Continua con el estudio de los lineamientos estratégicos del DSO, un análisis de la situación actual y se establece la formulación estratégica, la que permite construir la propuesta de valor del DSO. Luego, se propone un modelo de negocios y se construyen los Balanced Scorecard (BSC) a nivel organización y áreas de operación, finalizando el trabajo con la definición de un esquema de incentivos.

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Morais, Marta Martins de. « Obras de arte da colecção DGAC/SEC cedidas à CMA/UA : estudo sobre metodologias para a localização de obras ». Master's thesis, Universidade de Aveiro, 2008. http://hdl.handle.net/10773/1149.

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Mestrado em Criação Artística Contemporânea
O presente trabalho desenvolve uma investigação para a localização de três obras de arte, pertencentes ao acervo Avenida de Arte Contemporânea de Aveiro – AACA, acervo que integra a Colecção DGAC/SEC. O trabalho tem como objectivo a localização das três obras referidas, bem como o estudo conducente ao desenvolvimento de um método para a localização de obras desaparecidas. ABSTRACT: The present paper aims at developing a research to trace the location of three lost masterpieces of the DGAC/SEC collection. The paper aims at finding these three masterpieces as well as carrying out a study for developing a method to trace lost masterpieces.

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Mandal, Chanchal. « Demography, economy and political tensions : study of Darjeeling Hills (1907-2007) ». Thesis, University of North Bengal, 2020. http://ir.nbu.ac.in/handle/123456789/4238.

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Pramesthi, Tyas Wahyu, et 朴莉媮. « Life Cycle Assessment of BSSF and BOF Slag DGAC Pavement ». Thesis, 2015. http://ndltd.ncl.edu.tw/handle/09444500251379835256.

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碩士
國立中央大學
土木工程學系
103
This research is focused on how Global Warming Potential (GWP) was influenced by natural aggregates and replacement of coarse natural aggregate with steel slag on Dense Grade Asphalt Concrete (DGAC). Two types of steel slag, Basic Oxygen Furnace (BOF) and Baosteel’s Slag Short Flow (BSSF) slag were used to replace coarse natural aggregates. By using GaBi 6 Education software, this research discovered GWP which caused by pavement’s activities. Replacement of coarse aggregate with steel slag including BOF or BSSF slag will increase GWP. According to the simulation result, the GWP will increase varies depending on the amount of aggregate used. By using 10%, 20%, 30% and 100% steel slag which replace coarse aggregate in surface layer, GWP was increase between 4.78% until 7.13% compared to the traditional DGAC. However, based on construction cost point of view, using steel slag give significant benefit. The results show that by using BOF or BSSF slag save 3.66% (DGAC 10% steel slag) until 36.47% (DGAC 100% steel slag) of total cost compare to traditional DGAC. Based on the results of GWP simulation and cost analysis, replacement of coarse natural aggregate with steel slag (BOF or BSSF) in DGAC is acceptable and worthy of further research.

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Livres sur le sujet "DGAHC"

Ṅag-dbaṅ-kun-dgaʼ-bsod-nams. A-mes-źabs Ṅag-dbaṅ-kun-dgaʼ-bsod-nams kyi bkaʼ ʼbum = : The collection works of A-mes-shab ngag-dwang kun-dgah bsod-nams. [Kathmandu] : Sa-skya Rgyal-yoṅs Gsuṅ-rab Slob-gñer-khaṅ, 2000.

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Dupond, Pierre. Carnet de Vol Conforme EASA : Pour Pilote Amateur Ou Professionnel, Journal de Bord et de Suivi de Vol et Simulateur Pour Avion, ULM, Hélicoptère, Ballon, Planeur, Drone, Cahier à Remplir Conforme Au Règlement Européen ,DGAC,EASA. Independently Published, 2020.

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Chapitres de livres sur le sujet "DGAHC"

Nagovitsin, Mark, et Denis Kuznetsov. « DGAC : Dialogue Graph Auto Construction Based on Data with a Regular Structure ». Dans Studies in Computational Intelligence, 508–29. Cham : Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-19032-2_52.

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