Bibliographies thématiques / Cold Bridge

Littérature scientifique sur le sujet « Cold Bridge »

Auteur : Grafiati
Publié le 10 mars 2023

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Articles de revues sur le sujet "Cold Bridge"

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Wang, Zhi Yuan, et Lai Jun Liu. « Health Monitoring and Reinforcement of the Cold and Dry Area Roads and Bridges ». Advanced Materials Research 722 (juillet 2013) : 317–21. http://dx.doi.org/10.4028/www.scientific.net/amr.722.317.

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Bridge disease worsening in cold and dry area, maintenance and repair of the bridge has drawn world wide attention, and that can be used for the repair and reinforcement of bridge funding is very limited, which requires accurate evaluation and prediction of the technical condition of the existing bridge, so as to formulate the appropriate maintenance strategy. Based on the current highway bridge maintenance condition of cold and dry area,this dissertation researches evaluation on bridge technical condition and model forecasting aiming at bridges of cold area,and programs Highway Bridge of cold area maintaining and executive system according to the periodical bridges testing data,consequently educing the maintenance and reinforcement strategy.
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Gergess, Antoine N., et Rajan Sen. « Cold Curving Steel Bridge Girders ». Transportation Research Record : Journal of the Transportation Research Board 2081, no 1 (janvier 2008) : 165–75. http://dx.doi.org/10.3141/2081-18.

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Wang, Chunsheng, Lan Duan, Musai Zhai, Yuxiao Zhang et Shichao Wang. « Steel bridge long-term performance research technology framework and research progress ». Advances in Structural Engineering 20, no 1 (28 juillet 2016) : 51–68. http://dx.doi.org/10.1177/1369433216646005.

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To ensure structural sustainability, it is necessary to conduct steel bridge long-term performance study, including bridge design, evaluation, maintenance, and reinforcement technology. The research on steel bridge long-term performance is introduced in four aspects: (1) fatigue performance experimental study for full-scale orthotropic steel bridge decks in laboratory to study its fatigue failure mechanism, in order to improve fatigue design methodology and find rational reinforcement and maintenance method; (2) conducting steel bridge out-of-plane distortion-induced fatigue performance study, and developing cold reinforcement method; (3) performance study for base material and typical joint under long-term vehicle and environmental effect in aging steel bridges, and safety assessment and maintenance of existing steel bridge; (4) temperature gradient monitoring for steel box girder model to build the temperature design mode. Meantime, in-situ tests and monitoring are conducted for steel bridge long-term performance detection, assessment, and maintenance. The study results in this article build the research framework of steel bridge long-term performance preliminarily, which is the basis for steel bridge sustainable design, maintenance, and cold reinforcement methodology system.
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Zhao, Zhi Meng, Xiao Long Wang, Feng Jin Chen, Zhen Ji Wang et Ya Juan Yang. « Analysis and Evaluation on Safety of Old Stone Arch Bridge Based on Current Specification ». Applied Mechanics and Materials 501-504 (janvier 2014) : 1178–81. http://dx.doi.org/10.4028/www.scientific.net/amm.501-504.1178.

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This paper examines the bearing capacity and stability of a catenary axis uniform cross-section multi-span stone arch bridge with solid spandrels in the cold areas. Taking the West Ulanhot Large Bridge built in cold area of Inner Mongolia in 1960s as an example, the bearing capacity and stability of early-built stone arch bridge were calculated,in consideration with the effect of dead load, live load and temperature variation as well as multi-arch action on the main arch ring, in the light of current specification, i.e., the Code for Design of Highway Masonry Bridges and Culverts (JTG D61-2005) published by the Ministry of Communications of the People's Republic of China. The aim was to evaluate the safety of the old multi-span arch bridge through the theoretical analysis and checking calculation based on the current specification.
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Aurier, Louis, Munzer Hassan, Jan Jaworski et Lotfi Guizani. « Review of Accelerated Bridge Construction Systems for Bridge Superstructures and Their Adaptability for Cold Weather ». CivilEng 4, no 1 (22 janvier 2023) : 83–104. http://dx.doi.org/10.3390/civileng4010007.

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The application of Accelerated Bridge Construction methods (ABC) to build, renovate and rehabilitate aging bridges is most likely to reduce the economic and social impacts of projects. This is especially relevant in countries with severe winter climates, where bridge construction is typically interrupted during the winter period. The objective of this study is to present the state of the art related to elements, systems, connections and materials used for bridge superstructures in ABC projects and to highlight their adaptability to cold or northern climate countries. The literature review and presentation of results are based on the gathering of Prefabricated/Precast Bridge Elements and Systems (PBES) used for ABC projects in North America and which are also used in many countries around the world. Following this inventory, and after grouping the PBES, connections and materials, the authors were able to identify the possibility of adapting the ABC method for countries with cold and northern climates. Products that can be used down to −6 °C for connections are presented, and future research orientations are proposed.
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Yin, Xiao Lei, Jian Cheng et Gang Zhao. « Deformation Law of Cold Drawing Process of High Strength Bridge Cable Steel ». Materials Science Forum 1035 (22 juin 2021) : 801–7. http://dx.doi.org/10.4028/www.scientific.net/msf.1035.801.

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High-strength cable-steel bridge is the “lifeline” of steel structure bridges, which requires high comprehensive mechanical properties, and cold-drawing is the most important process to produce high-strength cable-steel bridge. Therefore, through the ABAQUS platform, a bridge wire drawing model was established, and the simulation analysis on the process of stress strain law and strain path trends for high-strength bridge steel wire from Φ 12.65 mm by seven cold-drawing to Φ 6.90 mm was conducted. The simulation results show that the wire drawing the heart of the main axial deformation, surface and sub-surface of the main axial and radial deformation occurred, with the increase in the number of drawing the road, the overall deformation of the wire was also more obvious non-uniformity. In the single-pass drawing process, the change in the potential relationship of each layer of material was small, and multiple inflection points appeared in the strain path diagram; the change in the seven-pass potential relationship was more drastic, which can basically be regarded as a simple superposition of multiple single-pass pulls.
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Wang, Xiao Dong, Olle Hagman, Niclas Björngrim et Lennart Elfgren. « Engineered Wood in Cold Climate - Application to Monitoring of a New Swedish Suspension Bridge ». Advanced Materials Research 639-640 (janvier 2013) : 96–104. http://dx.doi.org/10.4028/www.scientific.net/amr.639-640.96.

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Engineered wood is increasingly used in large structures in Europe, though little is known of its behavior in cold climate. This paper presents the structural health monitoring (SHM) system of a newly built suspension bridge with a deck of glulam timber as well as a bond stability study regarding cold climate performance of engineered wood. The bridge is located in Skellefteå in northern Sweden, and it connects two parts of the city situated on opposite shores of the Skellefteå river. In this ongoing study of the timber-bridge, a structural health monitoring system is employed to verify structural design and long-term performance. This 130m-span bridge is monitored using GNSS receivers, MEMS accelerometers, laser positioning systems, wireless moisture content sensors, strain gauges and weather stations. Data from the monitoring systems is analyzed regarding accuracy, complexity, costs and reliability for long time use. Engineered wood application in bridges, sports centers and timber buildings are discussed. Bond stability of glulam structures in cold climate is also examined in a range of experiments ranging from small glued wood joints to full size glulam bridge performance over time. From an engineered wood material point of view, the study is relevant to cold regions such as Scandinavia, Canada, Alaska, Russia, and the northern parts of China and Japan etc. The engineered wood constructions in these areas will be exposed to low temperature in a quite long period each year. The goal is to determine how engineered wood behaves when exposed to temperatures between 20 °C to -60 °C.
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Zhang, Jinquan, Pengfei Li, Yan Mao, Zhenhua Dong et Zhenyu Jiang. « Technical Conditions Survey of Simple-Support Bridges in a Severe Cold Region in Northeast China ». Open Civil Engineering Journal 12, no 1 (14 juin 2018) : 122–33. http://dx.doi.org/10.2174/1874149501812010122.

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Background: Based on the routine inspection of 637 simple-support bridges in a severe cold region in northeast China, the technical condition data were collected and analyzed according to China’s bridge condition evaluation code. Results and Discussion: The results indicate that the appraisal rating of the bridges decreases with service time gradually. For bridges with a service life of 3-5years, 7 years and more than 15 years, the proportion of rating of “poor condition” is 14%, 22% and 43%, respectively. Besides, the inspection results show that cracking, concrete scaling, and corrosion of reinforcement are the major damage types of the bridges, and the freeze-thaw and salt induced corrosion are the main deterioration causes. It is recommended based on the inspection results that timely drainage of water is very important in reducing bridge damages in severe cold regions. Meanwhile, protective measures of durability should be specially considered in the design and construction stages.
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Liu, Xiu, Xiao Mei Yu, Chu Ang Xu et Jiang Wei Chu. « Cold Area Asphalt Concrete Deck Pavement Technology Research ». Materials Science Forum 980 (mars 2020) : 239–43. http://dx.doi.org/10.4028/www.scientific.net/msf.980.239.

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As the problem of asphalt concrete bridge deck pavement is becoming more and more serious, how to improve its road performance has become the focus of the study. As the lack of shear strength and bond strength between layers, flaking, raveling and other diseases were occurred on steel bridge deck asphalt pavement. This paper combines the common damages of bridge deck and asphalt concrete pavement in cold area of northeast region, focuses on the analysis of the cause of asphalt concrete pavement damage causes, puts forward preventive measures and recommendations, and present the bridge deck pavement structure in cold area combined with the engineering practice. The research results can effectively guide the construction of bridge deck pavement.
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Chen, Chuang, R. Kaloop Mosbeh, Zong Lin Wang, Qing Fei Gao et Jun Fei Zhong. « Design of a Long-Term Monitoring System for a PSC Continuous Box-Girder Bridge ». Key Engineering Materials 619 (juillet 2014) : 1–9. http://dx.doi.org/10.4028/www.scientific.net/kem.619.1.

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Structural Health Monitoring is becoming an increasingly common tool to obtain the long-term performance of infrastructures and buildings. Many structural health monitoring systems were developed and applied to different bridges in the world. However, very little is known on the applications in extreme cold environment. Fu Sui Bridge, a 1070 m variable cross-section continuous box-girder bridge, is located in the coldest province -- Heilongjiang province, China. In order to monitor the static and dynamic responses of the bridge under the traffic and environmental variation, a long-term continuous monitoring system was designed and installed on Fu Sui Bridge in April 2012. A hydrostatic leveling system was used to measure the displacement and fiber Bragg grating sensors were used to measure strain, acceleration and temperature. Moreover, other necessary components including data acquisition and transmission, data calculation and analysis software are also described. Summer and winter monitoring data are also presented. This paper focuses on: (1) the design and installation of the long-term continuous monitoring system hardware and (2) the operating pattern and function of the automatic monitoring system. After more than one year successful conducting, the system has provided a large amount of data records for daily management and research of the bridge. This system can be applied to extremely cold region.
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Thèses sur le sujet "Cold Bridge"

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Clark, David B. « A bridge over troubled waters the vital role of intelligence sharing in shaping the Anglo-American "special relationship" / ». Thesis, Monterey, Calif. : Naval Postgraduate School, 2008. http://edocs.nps.edu/npspubs/scholarly/theses/2008/Dec/08Dec%5FClark.pdf.

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Thesis (M.A. in Security Studies (Europe, Eurasia))--Naval Postgraduate School, December 2008.
Thesis Advisor(s): Siegel, Scott. "December 2008." Description based on title screen as viewed on January 29, 2009. Includes bibliographical references (p. 67-74). Also available in print.
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Miller, Jeanette Leigh. « Beat Women : The Thunder Before the Storm-An Analysis of Feminism's Bridge Generation ». OpenSIUC, 2014. https://opensiuc.lib.siu.edu/theses/1486.

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The 1950s saw the height of the Beat literature movement. Within this movement moved a cohort of women who helped revolutionize gender relations in the early Cold War era, leading to the emergence of the women's liberation movement of the 1960s and 1970s. By questioning social gender norms and harnessing their artistic, sexual, and economic autonomy, Beat women built lives of lived art outside proscribed social norms building the base for a new era in gender relations.
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Aydemir, Ilhan. « Alliance in Flux : Turkey’s Alliance Behavior, from the Cold War to the Present, 1947-2010 ». Ohio University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1275671316.

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Sheedy, Patrick. « Alleviating concrete placement issues due to congestion of reinforcement in post-tensioned haunch-slab bridges ». Thesis, Kansas State University, 2011. http://hdl.handle.net/2097/13251.

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Master of Science
Department of Civil Engineering
Robert Peterman
A flowable hybrid concrete mix with a spread of 17 to 20 inches was created with a superplasticizer to be used in post-tension haunch-slab (PTHS) bridges where rebar congestion is heaviest. The mix would allow for proper concrete consolidation. A conventional concrete mix with a slump of three to four inches was also created to be placed on top of the hybrid mix. The conventional mix would be used to create a sloping surface on the top of the concrete. The two mixes could be combined in the PTHS bridge deck and act as one monolithic specimen. Standard concrete tests such as compressive strength, tensile strength, modulus of elasticity, permeability, freeze/thaw resistance, and coefficient of thermal expansion were determined for the mixes and compared. Core blocks were cast using both mixes and composite cores were drilled. The cores were tested and their composite split-tensile strengths were compared to the split-tensile strengths of cylinders made from the respective mixes. A third concrete mix was made by increasing the superplasticizer dosage in the hybrid concrete mix to create a self-consolidating concrete (SCC) mix with a 24-inch spread. The SCC mix was created as a worst-case scenario and used in the determination of shear friction. Eighty-four push-off shear friction specimens were cast using the SCC mix. Joint conditions for the specimens included uncracked, pre-cracked, and cold-joints. Uncracked and pre-cracked specimens used both epoxy- and non-epoxy-coated shear stirrups. Cold-joint specimens used both the SCC mix and the conventional concrete mix. Joint-conditions of the cold-joint specimens included a one-hour cast time, a seven-day joint with a clean shear interface, and a seven-day joint with an oiled shear interface. The shear friction specimens were tested using a pure shear method and their results were compared to the current American Concrete Institute code equation.
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Munny, M. (Mahmuda). « Attitude-behavior gap in sustainable fashion consumption:how the gap could be bridged ? » Master's thesis, University of Oulu, 2019. http://jultika.oulu.fi/Record/nbnfioulu-201906052378.

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Abstract. The fast-fashion industry has experienced pressure due to creating unsustainable impacts on the environment and society. Sustainability impacts of the fast-fashion industry have called for the necessity of sustainable fashion consumption and ethical production of fashion-clothes. Despite being concerned about sustainability, consumers usually show reluctant-behavior to adopt ethical changes in their fashion consumption patterns. This study investigates consumers’ attitude-behavior gap in sustainable fashion consumption, identifies reasons for the gap’s existence, and suggests possible ways to bridge the gap. The theoretical framework for this thesis is formed based on the pieces of evidence found in previous researches regarding sustainable consumerism. In order to serve the research purpose, this thesis is conducted based on a qualitative research design. Furthermore, this study adopts an abductive reasoning approach throughout the research process. Interviews and Focus Group Discussions are conducted to collect primary data. Target population mostly consists of female students and the age group is 20–35. The finding of the study reveals that the attitude-behavior gap can never be eliminated completely but the gap can be minimized through taking adequate actions. Several individual, social, and situational factors influence the size of the attitude-behavior gap in sustainable fashion consumption. Another finding suggests possible ways to bridge the gap from four perspectives; companies’ side, policymakers’ side, consumers’ side, and joint efforts by companies, consumers, and policymakers.
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CHAU, Ho Yan. « Cold war strategy, immigration law reform and "assimilationism" : a study of U.S. policies towards Japanese war brides ». Digital Commons @ Lingnan University, 2018. https://commons.ln.edu.hk/otd/22.

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The Japanese Emperor Hirohito accepted the Potsdam Declaration on 14 August 1945 represented the Japanese government announced the unconditional surrender. Based on the declaration, the process of the Allied occupation of Japan from 1945 to 1952 started. The period from 1945 to 1952 was special not only because it was the time of the allied occupation of Japan and also the period of Cold War. Japan as a defeated country in the WWII was occupied and the U.S. government had a special role in Japan. The Supreme Commander for the Allied Power (SCAP) had critical role in Japan in this period and it marked the change of Japan and the U.S. also made important change on the immigration policy. The U.S. occupation allowed the interracial marriage between the G.I.s and the Japanese women. Japanese war bride was the product of the occupation. They witnessed the immigration law reform, the racial problem in the society and the cooperation during the cold war. In this paper, I argue that Japanese war brides as the subject in the reform of the immigration laws. The implementation of different public laws, from only allowing non-Asia war brides to open to all war brides within the deadline show the improvement in the racial limitation requirement. The Immigration and Nationality Act of 1952 and 1965 further reduced and eliminated the national origins quotas. Asians can therefore immigrate to the U.S. I also explain the racial ideas in the U.S. society by analyzing the bride schools. The war brides were encouraged to participate in the bride school before leaving Japan. They learned the history of the U.S., the culture and society of the U.S. and other skills as housewives and mothers. They were trained to match with the expectation of the U.S. society. I also analyze “assimilationism” and immigration policies. The “assimilation” of the Japanese war brides in Bride school can represent the ideology of immigration in the situation of the postwar society. The immigration laws before 1965 still contained the national origins ideas, which the Soviet Union used to attack and criticize. However, the U.S. occupation allowed the cooperation with the Japanese government. The “assimilation” of the Japanese war brides provided a special scene in showing the encounter of “assimilationism” and immigration law reform. The Japanese war brides witnessed the change in the immigration laws, “assimilationism” and Cold War policies. The Japanese war brides were the subjects in viewing the reform of the immigration policies. Using them to review the process can provide a different angle to evaluate the Cold War situation.
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Wilson, Cortney E. « A Tale of Two Theories : Using an Engineered Strain of E. coli to Bridge the Gap Between Quorum Sensing and Diffusion Sensing ». NSUWorks, 2016. http://nsuworks.nova.edu/occ_stuetd/411.

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Cooperation is a trait that is found at all levels of biological organization. Interestingly, cooperation appears to occur in bacteria that produce small, easily diffusible molecules called autoinducers. To understand why bacteria produce these autoinducers, the scientific community has focused on one predominant theory called quorum sensing. Under this theory, bacteria produce autoinducers so they can sense the density of the population. Once a sufficiently high population density is reached, autoinducers initiate the production of a costly gene product that serves to benefit the population. In contrast, a competing theory called diffusion sensing suggests that autoinducers are used by the individual cells and are not used for cooperation. Here, the production of the autoinducer serves as a mechanism to sense environmental conditions. If the environmental conditions are favorable, a costly gene product is produced. To what extent, and under what conditions, are each of these opposing theories valid remains to be identified. In this thesis, an engineered strain of Escherichia coli was used to identify the conditions under which quorum sensing and diffusing sensing can be observed. It was discovered that, depending upon the frequency at which the spatial distribution of the autoinducer and bacteria was disrupted, the population of engineered bacteria displayed hallmarks of either quorum sensing or diffusion sensing. Specifically, when the spatial distribution was disturbed at high or low frequency, quorum sensing was observed. However, when spatial distribution was disturbed at an intermediate frequency, diffusion sensing was observed. Understanding how these disturbances affect survival in bacteria may result in novel treatments for bacterial infections. In more general applications, it may be exploited in the development of alternative mechanisms for controlling invasive species or aid in species reintroduction.
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Paludo, Tamara. « Aplica??o de polifenois na dentina humana : estudo in vitro da morfologia interfacial e da resist?ncia de uni?o ». Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2018. http://tede2.pucrs.br/tede2/handle/tede/7918.

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Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES
(Artigo 1 Effect of a collagen stabilizing acid conditioner on adhesion to enamel and dentin) The aim was to evaluate the effect of different concentrations of phosphoric acid with grape seed extract (GSE) on the enamel acid etching, on the immediate bond strength to enamel, and on the bond strength to dentin after 12 months storage. Three different phosphoric acid formulations with GSE were obtained: GSE5 - 5% phosphoric acid + 20% ethanol + 2% GSE; GSE10 -10% phosphoric acid + 20% ethanol + 2% GSE; GSE20 - 20% phosphoric acid + 20% ethanol + 2% GSE; GC (control) - 37% phosphoric acid. The enamel and dentin surfaces of third molars, extracted for therapeutic reasons, were etched with 37% phosphoric acid for 15 s, and with the modified acids for 30 s. The acid was rinsed, followed by application of Adper Scotchbond Multipurpose adhesive system, and a block of composite resin was built. In enamel, the etching pattern was evaluated by scanning electron microscopy (SEM) and the bond strength was evaluated by conventional tensile test. In dentin, the microtensile bond strength (?TBS) was evaluated after 24 h and 1 year of storage. SEM images showed that GSE5 caused a more superficial enamel etching. According to ANOVA and Tukey?s test, enamel bond strength did not differ significantly between GC (49.00 MPa), GSE5 (42.78 MPa), GSE10 (51.55 MPa) and GSE 20 (36.18 MPa) (p> 0.05).According to two-way ANOVA and Tukey?s test, the interaction of factors (treatment x storage time) was significant (p=0.0001). At the 24 h of storage, GC (28.43 MPa) obtained the highest ?TBS, and did not differ significantly from GSE20 (24.11 MPa). GC and GSE20 were significantly higher to the others (p<0.05).The GSE10 (17.53 MPa) and GSE5 (16.75 MPa) did not differ significantly from each other. At the 12 months of storage, there was no significant difference in ?TBS between GC (17.71 MPa), GSE5 (20.97 MPa), GSE10 (17.59 MPa) and GSE20 (18.52 MPa). Only GSE5 and GSE10 did not significantly decrease ?TBS after 12 months of storage. It was concluded that GSE5 caused a more superficial enamel etching pattern in relation to the acid concentrations at 37%, 20% and 10%. However, there was no significant difference in the bond strength to enamel among the four concentrations. GSE5 and GSE10 promoted stability of the bond strength to dentin after 12 months of storage. (Artigo 2 Effect of phosphoric acid with polyphenols on dentin collagen : Atomic force microscopy study) Objective: The aim was of this study to evaluate the effect of different concentrations of phosphoric acid with grape seed extract (GSE) on the structure of the collagen fibrils of dentin. Materials and methods: Samples (0.3 mm thickness and 8 mm diameter) of the middle third of the coronal dentin of sound human molars were obtained. Half of the dentin of each tooth was etched with phosphoric acid (5%, 10%, or 20%) for 30 s, and the other half was etched with its corresponding phosphoric acid with 2% GSE for 30 s. The dentin of each sample was observed using an Atomic Force Microscope (AFM). Results: AFM images showed that phosphoric acid at concentrations of 5%, 10% and 20% demineralized the dentin and exposed the collagen fibrils and their pattern of periodicity. Phosphoric acid at each concentration with 2% GSE changed the collagen fibril periodicity, and the collagen fibrils formed globular structures. This change was more significant in dentin treated with 5% phosphoric acid and less significant with 20% phosphoric acid. Conclusions: The use of 5% phosphoric acid with 2% GSE produced denser collagenous globular structures. This conformational change in the collagen can make it more mechanically and enzymatically resistant.
(Artigo 1 Efeito de um condicionador ?cido estabilizador de col?geno na ades?o ao esmalte e ? dentina) O objetivo foi avaliar o efeito de diferentes concentra??es de ?cido fosf?rico com extrato de semente de uva (GSE) no padr?o de condicionamento ?cido em esmalte, na resist?ncia de uni?o imediata ao esmalte e ap?s 12 meses de armazenamento em dentina. Tr?s diferentes formula??es de ?cido fosf?rico com GSE foram obtidas: GSE5 - 5% de ?cido fosf?rico + 20% de etanol + 2% de GSE; GSE10 -10% de ?cido fosf?rico + 20% de etanol + 2% de GSE; GSE20 - 20% de ?cido fosf?rico + 20% de etanol + 2% de GSE; GC (controle) - ?cido fosf?rico 37%. As superf?cies do esmalte e da dentina de dentes terceiros molares, extra?dos por raz?es terap?uticas, foram condicionadas com ?cido fosf?rico 37% por 15 s e com os ?cidos modificados por 30 s, seguido de lavagem e aplica??o do sistema adesivo Adper Scotchbond Multiuso (convencional de tr?s passos) e da constru??o de um bloco em resina composta. Em esmalte, o padr?o de condicionamento foi avaliado em microscopia eletr?nica de varredura (MEV) e a resist?ncia de uni?o foi avaliada pelo ensaio de tra??o convencional. Em dentina, a resist?ncia de uni?o ? microtra??o (R?T) foi avaliada ap?s 24 h e 12 meses de armazenamento. As imagens em MEV evidenciaram que o GSE5 causou um condicionamento mais superficial do esmalte. De acordo com ANOVA de 2 fatores e Tukey, a resist?ncia de uni?o ao esmalte n?o diferiu estatisticamente entre GC (49,00 MPa), GSE5 (42,78 MPa), GSE10 (51,55 MPa) e GSE20 (36,18 MPa) (p>0,05). De acordo com ANOVA de duas vias e Tukey, a intera??o tratamento x tempo de armazenamento foi significativa (p=0,0001). No tempo de armazenamento de 24 h, GC (28,43 MPa) obteve a maior R?T, n?o diferindo estatisticamente do grupo GSE20 (24,11 MPa), sendo ambos estatisticamente superiores aos demais (p<0,05). O grupo GSE10 (17,53 MPa) e o GSE5 (16,75 MPa) n?o diferiram estatisticamente entre si. No tempo de armazenamento de 12 meses, n?o houve diferen?a estat?stica na R?T entre o GC (17,71 MPa), GSE5 (20,97 MPa), GSE10 (17,59 MPa) e GSE20 (18,52 MPa). Apenas GSE5 e GSE10 n?o tiveram redu??o significativa da R?T ap?s 12 meses de armazenamento. Concluiu-se que o GSE5 causou um condicionamento mais superficial do esmalte em rela??o ?s concentra??es de 37%, 20% e 10%. No entanto, n?o houve diferen?a estat?stica nos valores de resist?ncia ? tra??o imediata ao esmalte entre as quatro concentra??es. GSE5 e GSE10 promoveram a estabilidade da resist?ncia de uni?o ? dentina ap?s 12 meses de armazenamento.
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Barbour, Kelli D. « Hermine Cloeter, Feuilletons, and Vienna : A Flaneuse and Urban Cultural Archaeologist Wandering Through Opaque Spaces, Bridging Past and Present to Reclaim What Could Be Lost ». Diss., CLICK HERE for online access, 2004. http://contentdm.lib.byu.edu/ETD/image/etd513.pdf.

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Stevens, Ashley Marie. « American Society, Stereotypical Roles, and Asian Characters in M*A*S*H ». Bowling Green State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1459520345.

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Livres sur le sujet "Cold Bridge"

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Whittell, Giles. Bridge of spies : A true story of the Cold War. New York : Broadway Books, 2010.

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Bridge of spies : A true story of the Cold War. New York : Broadway Paperbacks, 2010.

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Lesser, Ian O. Bridge or barrier ? : Turkey and the West after the Cold War. Santa Monica, CA : Rand, 1992.

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Montejo, Luis A. Seismic behavior of concrete bridge columns at sub-freezing temperatures. Juneau, AK : Alaska Dept. of Transportation [and Public Facilities], Statewide Research Office, 2008.

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Forest Products Laboratory (U.S.), National Wood in Transportation Information Center (U.S.) et United States. Federal Highway Administration, dir. Cold temperature effects on stress-laminated timber bridges : A laboratory study. Madison, WI : U.S. Dept. of Agriculture, Forest Service, Forest Products laboratory, National Wood in Transportation Information Center, 2003.

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1915-, Berg Edna, et Cicale Annie 1950-, dir. Cold smoke : Skiers remember Montana's Bear Canyon and Bridger Bowl. Missoula, Mont : Mountain Press, 1997.

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How small brides survive in extreme cold : Poems. Amherst, MA : Verse Press, 2003.

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Brigante, Aurelija. Come walk with me : Memoirs of a cold-war bride. Ponce De Leon, FL : Three Bars Pub., 2010.

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Bellamy's bride : The search for Maria Hallett of Cape Cod. Charleston, SC : History Press, 2010.

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United States. General Accounting Office., dir. Railroad bridges and tunnels : Federal role in providing safety oversight and freight infrastructure investment could be better targeted : report to congressional requesters. [Washington, D.C.] : U.S. General Accounting Office, 2007.

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Chapitres de livres sur le sujet "Cold Bridge"

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Wang, C. S., C. Shu et Y. Z. Wang. « Numerical evaluation of UHPFRC reinforcement with cold bonded connecters for fatigue cracking details ». Dans Bridge Safety, Maintenance, Management, Life-Cycle, Resilience and Sustainability, 1699–706. London : CRC Press, 2022. http://dx.doi.org/10.1201/9781003322641-210.

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Logan, William A. T. « Spanning Assam’s Great River : The Brahmaputra Bridge and the Indian Railways, 1958–1962 ». Dans A Technological History of Cold-War India, 1947–⁠1969, 135–67. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-78767-7_6.

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Petrović, Emina Kristina, Bruno Marques, Natasha Perkins et Guy Marriage. « Phenomenology in Spatial Design Disciplines : Could it Offer a Bridge to Sustainability ? » Dans Design Research Foundations, 285–316. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73302-9_14.

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Rosni, Nurliyana Md, Kusnanto Mukti Wibowo, Royan Royan, Fani Susanto, Atqiya Mushlihati, Rudi Irmawanto et Mohd Zainizan Sahdan. « Half Bridge Operational Testing and Optimization for Chemiresistive Escherichia Coli Bacteria Sensor Application ». Dans Proceedings of the 2nd International Conference on Electronics, Biomedical Engineering, and Health Informatics, 59–72. Singapore : Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-1804-9_5.

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Batsukh, Khulan. « Cold Atom Interferometry in Satellite Geodesy for Sustainable Environmental Management ». Dans Civil and Environmental Engineering for the Sustainable Development Goals, 43–54. Cham : Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-99593-5_4.

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AbstractOur Earth is a complex system. By monitoring the integrated geodetic-geodynamic processes, we can understand its sub-systems and geographical distribution of its resources. With the development of space techniques and artificial satellites, satellite geodesy era started, e.g., it became possible to observe a wide range of processes, occurring both on and below the Earth's surface. Such observations can be exploited not only in environmental activities, but also in societal activities like natural disasters monitoring. Thus, satellite geodesy can bring great benefits to “Climate action”, one of the 17 sustainable development goals of the United Nation: we can estimate the ice-sheet mass balance and study the impact of climate change by monitoring sea levels. This paper aims to investigate the possible implementation of cold atom sensors for future satellite gravity missions, which would improve our current knowledge of the Earth’s gravity field and contribute into the sustainable environmental management. Graphical Abstract
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Bozzo, Luciano. « La guerra pensata : narrazioni, teoria, prassi ». Dans Studi e saggi, 69–79. Florence : Firenze University Press, 2022. http://dx.doi.org/10.36253/978-88-5518-595-0.06.

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The study of war and strategy has been at the core of the theory of international relations since the birth of the academic discipline. Strategy is a key factor in any conflict, first of all in violent conflicts. Military strategy is the bridge between politics and war. Strategic studies have mainly focused on military doctrines and the means to wage war for too long a time. Limited attention was paid to the cultural dimension of violent confrontations. Then, in the second half of the XX century the Western attention to the technological dimension of war became almost obsessive. However, if war is the continuation of politics by other means we must be aware that the human factor is of utmost importance among those “means”. The willingness of soldiers to sacrifice their life on the battlefield is the precondition to wage war. At the same time, it is also the basis of any political obligation. Hence, death is the continuation of politics by other means. Various “narratives” of war have been created in history in order to justify the individual commitment to fight and eventually die in war to attain political aims. Starting in the classical age the Western world has been developing two related narratives of war: the republican model and the decisive battle one. According to the first one the good citizen was a good soldier too, and vice-versa, while the second required the concentration of violence in space and time to break the enemy’s will to fight in the shortest possible time. The two concepts gave both moral and military sense to the violent, insensate, and chaotic environment of the battle. After the end of the cold war in most Western countries such a way of thinking on the relationship between war and politics has been undermined by several factors, first of all the unwillingness to sacrifice one’s life in war. The readiness to die in order to attain a political aim has almost vanished. On the contrary, the concept of the “decisive battle” has survived thanks to technological evolution. As a consequence, on the one hand, old figures of warriors reappeared on the battlefield: soldiers of fortune, God’s fighters, pirates, and criminals. On the other, the unwillingness to die coupled to the strategic archetype of the decisive battle is bringing more and more machines and AI into war, making it both post-heroic and post-human.
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Hainzelin, Etienne, Patrick Caron, Frank Place, Arlène Alpha, Sandrine Dury, Ruben Echeverria et Amanda Harding. « How Could Science–Policy Interfaces Boost Food System Transformation ? » Dans Science and Innovations for Food Systems Transformation, 877–91. Cham : Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-15703-5_47.

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AbstractThe world’s food systems must be transformed to make healthier diets more accessible for all, while increasing the sustainability and resilience of these systems, as clearly called for in the 2030 Agenda for Sustainable Development. Scientists and policymakers are among the actors necessary for this transformation. This chapter reviews the importance of the interfaces between science and policy and how these interfaces can become more active and effective. There is no single science—policy interface, but rather many, at different scales, for different functions, addressing different challenges. Strengthening, connecting, and streamlining these interfaces can ensure the consistency and success of food system transformation. To improve science—policy interfaces, the scientific community should (1) generate actionable knowledge, data, and metrics to move beyond obstacles, and address trade-offs and barriers to change, including power asymmetry, path dependency, conflicts of interest, and risk and uncertainty; (2) articulate models, knowledge, and place-based innovations for designing, implementing, and assessing specific transformative pathways—this requires specific arrangements, dialogues, and approaches, including scientific ones; (3) connect expertise mechanisms, such as scientific committees, to address multisectoral and multiscale processes for sustainable development; and (4) strengthen scientific cooperation through major challenge-oriented alliances and programs. Science—policy interfaces can play a decisive role if they are able to dovetail divergent views and overcome polarized debates and sectoral fragmentation. These interfaces must also help us to look ahead and to bridge local and global processes and actions.
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Meyer, Verena, Flavio Pinheiro Martins, Markus Reihlen, Fabian Pleß et Yasmin Azim Zadeh. « Developing Responsible and Sustainable Innovations in Entrepreneurship Education—Introducing the Sandbox Approach ». Dans Transforming Entrepreneurship Education, 37–43. Cham : Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-11578-3_3.

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AbstractAs entrepreneurship educators, we typically bring together students in entrepreneurial teams and let them develop and work on their own ideas. Most of the time, their ideas are innovative, interesting, and inspiring. They also increasingly take sustainability into account, still this needs to be fostered systematically. So how could we support these students to tackle global challenges and develop sustainable ideas? To develop more sustainable ideas, entrepreneurship education concepts need to bridge the perspectives of multiple stakeholders. Developing innovation communities within a framework of an open innovation process presents a suitable approach with a possible long-term impact in this regard. The “Sandbox Innovation Process” combines a structured open innovation process while fostering an innovation community enabled to solve regional challenges. Using this workshop concept, participants can experience the “Sandbox Approach” at firsthand and develop comprehensive concepts for their common challenges. This workshop is a starting point to reflect on how researchers and educators in entrepreneurship can become key drivers for developing sustainable solutions. This is supported by a framework that takes contextual constraints into account and reflects on the Sustainable Development Goals.
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Uesugi, Yuji, et Anna Deekeling. « Japan’s Peacebuilding and Mid-Space Actors : A Bridge Between the West and the Rest ». Dans Operationalisation of Hybrid Peacebuilding in Asia, 159–85. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67758-9_8.

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AbstractThis chapter focuses on Japan’s approach to peacebuilding, and examines its ability to emerge as a hybrid peacebuilding facilitator. To test this potential, three cases of Japan’s engagement with mid-space actors are studied. By reviewing Japan’s flagship projects in Timor-Leste, Myanmar and Mindanao, the chapter shows that Japan holds the ability to establish trust-relationships with top/national leaders of the aid-recipient countries through its apolitical, request-based, non-intrusive and long-term commitment approaches that Japanese actors display. At the same time, Japanese actors operating at the local/bottom are able to develop relationships with mid-space actors through providing them with important know-how and resources. This practice has allowed Japan to engage with conflict-affected societies where and when access of other donors was denied, which gave Japan an advantage in supporting local bridge-building initiatives. In short, this chapter demonstrated how Japan could bridge between Western donors and aid-recipient countries in Southeast Asia. While several shortcomings of the Japanese approach such as the limited inclusion of stakeholders and unequal distribution of peace dividend are identified in this chapter, it concluded that Japan could emerge as a hybrid peacebuilding facilitator if these shortcomings were addressed.
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Park, Josephine Nock-Hee. « Fabricating Friends in Lan Cao’s Monkey Bridge ». Dans Cold War Friendships, 195–226. Oxford University Press, 2016. http://dx.doi.org/10.1093/acprof:oso/9780190257668.003.0008.

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Actes de conférences sur le sujet "Cold Bridge"

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Stringer, David Charles. « Bridge Erection off the Ice ». Dans 10th International Symposium on Cold Regions Development. Reston, VA : American Society of Civil Engineers, 2013. http://dx.doi.org/10.1061/9780784412978.001.

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Hulsey, J. Leroy, Lutfi Raad et Billy Connor. « Deck Wearing Surfaces for the Yukon River Bridge ». Dans 11th International Conference on Cold Regions Engineering. Reston, VA : American Society of Civil Engineers, 2002. http://dx.doi.org/10.1061/40621(254)34.

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Suzuki, Jun, et Takashi Saito. « Apparatus to Restrain the Freezing of a Bridge Road Surface and Evaluation of Its Performance ». Dans Cold Regions Engineering 2012. Reston, VA : American Society of Civil Engineers, 2012. http://dx.doi.org/10.1061/9780784412473.029.

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Wu, Zhijian, Lanmin Wang et Tuo Chen. « Study on Dynamic Response of Bridge Pile Foundation at the Permafrost Regions under Seismic Load ». Dans Cold Regions Engineering 2012. Reston, VA : American Society of Civil Engineers, 2012. http://dx.doi.org/10.1061/9780784412473.048.

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Razzaq, Muhammad Kashif, Yoshiaki Okui, Hiroshi Mitamura et Takashi Imai. « Seismic Performance of a Highway Bridge with Different Modeling Techniques for Laminated Rubber Bearings at a Low Temperature ». Dans Cold Regions Engineering 2012. Reston, VA : American Society of Civil Engineers, 2012. http://dx.doi.org/10.1061/9780784412473.046.

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Nottingham, Dennis, Dempsey S. Thieman et Kenton Braun. « Design, Construction, and Performance of Open Cell Sheet Pile Bridge Abutments ». Dans 11th International Conference on Cold Regions Engineering. Reston, VA : American Society of Civil Engineers, 2002. http://dx.doi.org/10.1061/40621(254)37.

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Titkov, S. N., et V. I. Grebenets. « Geocryological Conditions of the Railway Bridge Construction Site, South Yamal Peninsula (Western Siberia, Russia) ». Dans 14th Conference on Cold Regions Engineering. Reston, VA : American Society of Civil Engineers, 2009. http://dx.doi.org/10.1061/41072(359)1.

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Hains, Decker B., et Leonard J. Zabilansky. « Scour under Ice : Potential Contributing Factor in the Schoharie Creek Bridge Collapse ». Dans 13th International Conference on Cold Regions Engineering. Reston, VA : American Society of Civil Engineers, 2006. http://dx.doi.org/10.1061/40836(210)17.

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Yu, Tianlai, Junqing Lei, Chengyu Li, Haibo Yu et Sidi Shan. « Compressive Strength of Floating Ice and Calculation of Ice Force on Bridge Piers during Ice Collision ». Dans 14th Conference on Cold Regions Engineering. Reston, VA : American Society of Civil Engineers, 2009. http://dx.doi.org/10.1061/41072(359)59.

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Rabinowitz, M., Y. E. Kim, R. A. Rice et G. S. Chulick. « Cluster-impact fusion : Bridge between hot and cold fusion ? » Dans Anomalous nuclear effects in deuterium/solid systems. AIP, 1991. http://dx.doi.org/10.1063/1.40722.

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Rapports d'organisations sur le sujet "Cold Bridge"

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Ravazdezh, Faezeh, Julio A. Ramirez et Ghadir Haikal. Improved Live Load Distribution Factors for Use in Load Rating of Older Slab and T-Beam Reinforced Concrete Bridges. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317303.

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This report describes a methodology for demand estimate through the improvement of load distribution factors in reinforced concrete flat-slab and T-beam bridges. The proposed distribution factors are supported on three-dimensional (3D) Finite Element (FE) analysis tools. The Conventional Load Rating (CLR) method currently in use by INDOT relies on a two-dimensional (2D) analysis based on beam theory. This approach may overestimate bridge demand as the result of neglecting the presence of parapets and sidewalks present in these bridges. The 3D behavior of a bridge and its response could be better modeled through a 3D computational model by including the participation of all elements. This research aims to investigate the potential effect of railings, parapets, sidewalks, and end-diaphragms on demand evaluation for purposes of rating reinforced concrete flat-slab and T-beam bridges using 3D finite element analysis. The project goal is to improve the current lateral load distribution factor by addressing the limitations resulting from the 2D analysis and ignoring the contribution of non-structural components. Through a parametric study of the slab and T-beam bridges in Indiana, the impact of selected parameters on demand estimates was estimated, and modifications to the current load distribution factors in AASHTO were proposed.
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Beitleman, Alfred D. Cape Cod Railroad Bridge Coating Field Test Results. Fort Belvoir, VA : Defense Technical Information Center, novembre 1999. http://dx.doi.org/10.21236/ada371715.

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Rahai, Hamid, et Assma Begum. Numerical Investigations of Transient Wind Shear from Passing Vehicles Near a Road Structure (Part I : Unsteady Reynolds-Averaged Navier-Stokes Simulations). Mineta Transportation Institute, janvier 2021. http://dx.doi.org/10.31979/mti.2020.1933.

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In this research, the authors performed unsteady numerical simulations of a moving Ahmed body under a freeway overpass at different distances from the bridge columns in order to evaluate transient wind shear and the wind load on these columns. Results have shown that when the vehicle is at 0.75W distance from the bridge columns, an unsteady wind speed of up to 24 m/s is observed at the columns with a pressure coefficient difference of 0.9. Here W is the width of the vehicle. These results indicate with an appropriate system for harnessing these wind energy potentials, significant renewable electric power could be generated with zero carbon footprint.
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Carrión-Tavárez, Ángel. From NAP to SNAP : A Bridge to Economic Liberty for Residents of Puerto Rico. Puerto Rico Institute for Economic Liberty, 2022. http://dx.doi.org/10.53095/13584001.

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This paper explains the origin, characteristics, and operation of the United States federal government’s block grant currently received by Puerto Rico to operate a nutrition assistance program. We compare its limitations with the Supplemental Nutrition Assistance Program (SNAP) benefit system. We analyze the possible change from the block grant to SNAP, and the potential of this program to enable more people to work and provide for themselves and their families. The effect on the economic activity of the federal funds allocated for the reconstruction and construction of infrastructure on the Island is considered. Finally, we discuss how SNAP incentives could create favorable conditions for the labor force participation rate to rise and what this means for the economic liberty of the people of Puerto Rico.
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Noakes, Sierra, Allison Modica et Kristyn Palazzolo. Edcamp Design for Learning Series : A New Bridge Between Research and Professional Learning. Digital Promise, février 2022. http://dx.doi.org/10.51388/20.500.12265/149.

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In the face of a worldwide pandemic, educators rose to the challenge of engaging students and families remotely to not only continue learning but also to provide as much normalcy as possible at a time of chaos and uncertainty. Many educators were looking for quick, meaningful ways to learn new skills to effectively teach remotely and connect with learners from afar. The Edcamp Community by Digital Promise saw this as an opportunity to further demonstrate how the Edcamp model of professional learning paired with learning sciences research could quickly meet the needs of educators and create spaces for shared learning and networking. The Edcamp team created the Edcamp: Design for Learning (DfL) series. Supported by the Chan Zuckerberg Initiative and in partnership with Transcend, a national nonprofit organization focused on innovation in school design, we refined our model for online Edcamps to emphasize bringing together learning sciences expertise within Digital Promise and educator context and pedagogy expertise from the Edcamp Community to co-design a series of four online Edcamps. This report shares the key lessons learned from that series.
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Huang, Cihang, Yen-Fang Su et Na Lu. Self-Healing Cementitious Composites (SHCC) with Ultrahigh Ductility for Pavement and Bridge Construction. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317403.

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Cracks and their formations in concrete structures have been a common and long-lived problem, mainly due to the intrinsic brittleness of the concrete. Concrete structures, such as rigid pavement and bridge decks, are prone to deformations and deteriorations caused by shrinkage, temperature fluctuation, and traffic load, which can affect their service life. Rehabilitation of concrete structures is expensive and challenging—not only from maintenance viewpoints but also because they cannot be used for services during maintenance. It is critical to significantly improve the ductility of concrete to overcome such issues and to enable better infrastructure quality. To this end, the self-healing cementitious composites (SHCC) investigated in this work could be a promising solution to the aforementioned problems. In this project, the team has designed a series of cementitious composites to investigate their mechanical performances and self-healing abilities. Firstly, various types of fibers were investigated for improving ductility of the designed SHCC. To enhance the self-healing of SHCC, we proposed and examined that the combination of the internal curing method with SHCC mixture design can further improve self-healing performance. Three types of internal curing agents were used on the SHCC mixture design, and their self-healing efficiency was evaluated by multiple destructive and non-destructive tests. Results indicated a significant improvement in the self-healing capacity with the incorporation of internal curing agents such as zeolite and lightweight aggregate. To control the fiber distribution and workability of the SHCC, the mix design was further adjusted by controlling rheology using different types of viscosity modifiers. The team also explored the feasibility of the incorporation of colloidal nano-silica into the mix design of SHCC. Results suggest that optimum amounts of nano-silica have positive influence on self-healing efficiency and mechanical properties of the SHCC. Better hydration was also achieved by adding the nano-silica. The bonding strength of the SHCC with conventional concrete was also improved. At last, a standardized mixing procedure for the large scale SHCC was drafted and proposed.
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Wunderlich, Carmen, Harald Müller et Una Jakob. WMD Compliance and Enforcement in a Changing Global Context. The United Nations Institute for Disarmament Research, mai 2020. http://dx.doi.org/10.37559/wmd/21/wmdce02.

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The regimes for the control of weapons of mass destruction (WMD) are essential ingredients of the global order. Yet this order is currently in transition: the bipolarity of the Cold War has given way to a more complex, multipolar world order characterized by conflicts of interest and great power competition rather than cooperative security. This competition brings with it rising strategic uncertainties which endanger stability and have far reaching implications for WMD-related agreements. To better understand the implications of this changing global context for WMD arms control and disarmament measures this report looks at the past, present and future prospects for WMD-related treaties. The report begins by outlining four broad yet interlinked approaches to arms control and disarmament before considering how these have been applied to chemical, biological and nuclear weapons in the past and how these measures could be applied in the future.
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Peña, Ignacio, Tomás Gutiérrez et Milagros Gutiérrez. A Bridge to the Future : How the Rise of the Miami Startup Ecosystem can Become a Platform to Transform the Americas. Inter-American Development Bank, octobre 2021. http://dx.doi.org/10.18235/0003724.

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This study analyzes the rise of the Miami startup ecosystem and the opportunities for mutual benefit engendered by a strong connection with Latin America and the Caribbean (LAC). The exponential technology revolution and the boom of the LAC startup ecosystem creates a massive opportunity to build a talent-driven network of startup and knowledge ecosystems that could generate trillions of dollars in value and millions of employment, while igniting the industries of the future across the Hemisphere. The recent rise of the Greater Miami area's innovation ecosystem opens the possibility to unleash value and growth through building a bridge that connects ecosystems across the Americas.
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Campbell, Seth, Zoe Courville, Samantha Sinclair et Joel Wilner. Brine, englacial structure and basal properties near the terminus of McMurdo Ice Shelf, Antarctica. Engineer Research and Development Center (U.S.), septembre 2022. http://dx.doi.org/10.21079/11681/45303.

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We collected ∼1300 km of ground-penetrating radar profiles over McMurdo Ice Shelf, Antarctica, using frequencies between 40 and 400 MHz to determine extent, continuity and depth to the brine. We also used profiles to determine meteoric ice thickness and locate englacial features, which may suggest ice shelf instability. The brine extends 9–13 km inland from the ice shelf terminus and covers the entire region between Ross, White and Black Islands. Jump unconformities and basal fractures exist in the brine and ice shelf, respectively, suggesting prior fracturing and re-suturing. One 100 MHz profile, the most distal from the ice shelf edge while still being situated over the brine, simultaneously imaged the brine and bottom of meteoric ice. This suggests a negative brine salinity gradient moving away from the terminus. The meteoric ice bottom was also imaged in a few select locations through blue ice in the ablation zone near Black Island. We suggest that brine, sediment-rich ice and poor antenna coupling on rough ice attenuates the signal in this area. When combined with other recent mass-balance and structural glaciology studies of MIS, our results could contribute to one of the most high-resolution physical models of an ice shelf in Antarctica.
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Baker, James E. A DPA for the 21st Century. Center for Security and Emerging Technology, avril 2021. http://dx.doi.org/10.51593/20190021.

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The Defense Production Act can be an effective tool to bring U.S. industrial might to bear on broader national security challenges, including those in technology. If updated and used to its full effect, the DPA could be leveraged to encourage development and governance of artificial intelligence. And debate about the DPA’s use for AI purposes can serve to shape and condition expectations about the role the law’s authorities should or could play, as well as to identify essential legislative gaps.
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