Hasil untuk "History America"

D. Mezibov

J. Hall

Joop Niekus

We follow the history and development of Brouwer's use of individual choice sequences up to the discovery of a method to apply them successfully in 1927. With the principles we derive from this first use we analyze in detail Brouwer's work from that time onward. Our reconstruction uses only very basic principles. It aligns exactly with Brouwer's work after 1927 and, moreover, it gives a clear explanation of the proofs of his results and the terms he uses.

Wenhan Lyu, Devashish Tyagi, Yihang Yang et al.

Long user history is highly valuable signal for recommendation systems, but effectively incorporating it often comes with high cost in terms of data center power consumption and GPU. In this work, we chose offline embedding over end-to-end sequence length optimization methods to enable extremely long user sequence modeling as a cost-effective solution, and propose a new user embedding learning strategy, multi-slicing and summarization, that generates highly generalizable user representation of user's long-term stable interest. History length we encoded in this embedding is up to 70,000 and on average 40,000. This embedding, named as DV365, is proven highly incremental on top of advanced attentive user sequence models deployed in Instagram. Produced by a single upstream foundational model, it is launched in 15 different models across Instagram and Threads with significant impact, and has been production battle-proven for >1 year since our first launch.

Andrea Gonzáles-Lombardi, César Astuhuamán-Gonzáles

Durante la tercera campaña de extirpación de idolatrías (1650) en una doctrina rural del Arzobispado de Lima, sierra central de Perú, se elaboraron dos expedientes criminales contra Juana Ycha e Ines Carua Chumbi, siendo acusadas de hechicería. Con el objetivo de contextualizar espacial y temporalmente estos documentos, se realiza un análisis y contrastación con datos de reconocimiento arqueológico e imágenes aéreas. Así, se propone la ubicación espacial y la caracterización de los paisajes sagrados en donde las oficiantes realizaron rituales a Apo Parato y Apo Quircay.

Maïssa Loulier

História Em Reflexão

Apresentação

Wilma King

Associate Professor, Department of History, University of California, Berkeley, 2019Harrington Faculty Fellow, Department of History, University of Texas-Austin, 2018-2019 Assistant Professor, Department of History, University of California, Berkeley, 2014-2019 Postdoctoral Fellow in Law and Society, Newcomb College Institute, Tulane University, 20132014 Assistant Professor, Departments of History and Gender, Women’s and Sexuality Studies, University of Iowa, 2012-2014

Christoph Draxler, Henk van den Heuvel, Arjan van Hessen et al.

Oral history is about oral sources of witnesses and commentors on historical events. Speech technology is an important instrument to process such recordings in order to obtain transcription and further enhancements to structure the oral account In this contribution we address the transcription portal and the webservices associated with speech processing at BAS, speech solutions developed at LINDAT, how to do it yourself with Whisper, remaining challenges, and future developments.

VanJessica Gladney, Breanna Moore, Kathleen Brown

In 2006 and 2016, the University of Pennsylvania denied any ties to slavery. In 2017, a group of undergraduate researchers, led by Professor Kathleen Brown, investigated this claim. Initial research, focused on 18th century faculty and trustees who owned slaves, revealed deep connections between the university's history and the institution of slavery. These findings, and discussions amongst the researchers shaped the Penn and Slavery Project's goal of redefining complicity beyond ownership. Breanna Moore's contributions in PSP's second semester expanded the project's focus to include generational wealth gaps. In 2018, VanJessica Gladney served as the PSP's Public History Fellow and spread the project outreach in the greater Philadelphia area. That year, the PSP team began to design an augmented reality app as a Digital Interruption and an attempt to display the truth about Penn's history on its campus. Unfortunately, PSP faced delays due to COVID 19. Despite setbacks, the project persisted, engaging with activists and the wider community to confront historical injustices and modern inequalities.

Yuwei Xia, Ding Wang, Qiang Liu et al.

Temporal Knowledge Graph (TKG) forecasting aims to predict future facts based on given histories. Most recent graph-based models excel at capturing structural information within TKGs but lack semantic comprehension abilities. Nowadays, with the surge of LLMs, the LLM-based TKG prediction model has emerged. However, the existing LLM-based model exhibits three shortcomings: (1) It only focuses on the first-order history for prediction while ignoring high-order historical information, resulting in the provided information for LLMs being extremely limited. (2) LLMs struggle with optimal reasoning performance under heavy historical information loads. (3) For TKG prediction, the temporal reasoning capability of LLM alone is limited. To address the first two challenges, we propose Chain-of-History (CoH) reasoning which explores high-order histories step-by-step, achieving effective utilization of high-order historical information for LLMs on TKG prediction. To address the third issue, we design CoH as a plug-and-play module to enhance the performance of graph-based models for TKG prediction. Extensive experiments on three datasets and backbones demonstrate the effectiveness of CoH.

Alberto del Castillo Troncoso

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Cleopatra Barrios Cristaldo, Franco Passarelli

Este trabajo analiza las modalidades de producción del audiovisual universitario del Nordeste argentino (NEA) entre las décadas del sesenta y noventa del siglo XX. El estudio recupera experiencias precursoras llevadas adelante por la Universidad Nacional del Nordeste, la Universidad Nacional de Misiones y el Sistema Provincial de Teleducación y Desarrollo (SIPTED). El artículo estudia los modos de producción a partir de caracterizar los agentes implicados, las redes de relaciones entre actores sociales, instituciones y fomentos. Asimismo, describe los métodos y condiciones de trabajo y sus vínculos con la concepción de formatos estéticos-narrativos específicos. El enfoque analítico adoptado busca apartarse de la perspectiva centralista que caracterizó a la historiografía del cine y contribuye a construir una mirada regionalista y localizada. El corpus de análisis está compuesto por audiovisuales del periodo de recorte, notas gráficas y entrevistas a realizadores de la región.

Kai Wang, H. J. Mo, Yangyao Chen et al.

We propose a novel method to quantify the assembly histories of dark matter halos with the redshift evolution of the mass-weighted spatial variance of their progenitor halos, i.e. the protohalo size history. We find that the protohalo size history for each individual halo at z~0 can be described by a double power-law function. The amplitude of the fitting function strongly correlates to the central-to-total stellar mass ratios of descendant halos. The variation of the amplitude of the protohalo size history can induce a strong halo assembly bias effect for massive halos. This effect is detectable in observation using the central-to-total stellar mass ratio as a proxy of the protohalo size. The correlation to the descendant central-to-total stellar mass ratio and the halo assembly bias effect seen in the protohalo size are much stronger than that seen in the commonly adopted half-mass formation time derived from the mass accretion history. This indicates that the information loss caused by the compression of halo merger trees to mass accretion histories can be captured by the protohalo size history. Protohalo size thus provides a useful quantity to connect protoclusters across cosmic time and to link protoclusters with their descendant clusters in observations.

Ken'yo U, Masanori Kameyama, Masaki Ogawa

To understand the evolution of the Moon, we numerically modeled mantle convection and magmatism in a two-dimensional polar rectangular mantle. Magmatism occurs as an upward permeable flow of magma generated by decompression melting through the convecting matrix. The mantle is assumed to be initially enriched in heat-producing elements (HPEs) and compositionally dense ilmenite-bearing cumulates (IBC) at its base. Here, we newly show that magma generation and migration play a crucial role in the calculated volcanic and radial expansion/contraction history. Magma is generated in the deep mantle by internal heating for the first several hundred million years. A large volume of the generated magma ascends to the surface as partially molten fingers and plumes driven by melt-buoyancy to cause a volcanic activity and radial expansion of the planet with the peak at 3.5-4 Gyr ago. Eventually, however, the planet begins to radially contract when the mantle solidifies by cooling from the surface boundary. As the mantle is cooled, the activity of partially molten plumes declines but continues for billions of years after the peak because some basal materials enriched in the dense IBC components hold HPEs. The calculated volcanic and radial expansion/contraction history is consistent with the observed history of the Moon. Our simulations suggest a substantial fraction of the mantle was solid, and there was a basal layer enriched in HPEs and the IBC components at the beginning of the history of the Moon.

Jesús G. Ruiz

Andrew Iskauskas, Ian Vernon, Michael Goldstein et al.

Modelling complex real-world situations such as infectious diseases, geological phenomena, and biological processes can present a dilemma: the computer model (referred to as a simulator) needs to be complex enough to capture the dynamics of the system, but each increase in complexity increases the evaluation time of such a simulation, making it difficult to obtain an informative description of parameter choices that would be consistent with observed reality. While methods for identifying acceptable matches to real-world observations exist, for example optimisation or Markov chain Monte Carlo methods, they may result in non-robust inferences or may be infeasible for computationally intensive simulators. The techniques of emulation and history matching can make such determinations feasible, efficiently identifying regions of parameter space that produce acceptable matches to data while also providing valuable information about the simulator's structure, but the mathematical considerations required to perform emulation can present a barrier for makers and users of such simulators compared to other methods. The hmer package provides an accessible framework for using history matching and emulation on simulator data, leveraging the computational efficiency of the approach while enabling users to easily match to, visualise, and robustly predict from their complex simulators.

Jorge Navarro López

The article aims to study the urban experience of the working class by analysing the narrative that workers produced and published in the workers' press. Workers' literature was not only concerned with politics and ideology but also with the projections, values and visions of the urban proletariat's experience. Through the analysis of the proletarian poetic and narrative production, the aim is to delve into the everyday life, meanings, imagination, aesthetic preferences, and the popular way of life, which are fundamental dimensions of working-class culture in the first quarter of the 20th century.

Orlando de Barros

A mídia radiofônica foi uma das mais impressionantes tecnologias a se desenvolver no século XX, deixando de ser a caixa de ruídos de 1918 para se transformar num sólido sistema de publicidade, de difusão de ideias e conceitos de todas as naturezas. Ao começar a II Guerra Mundial, os aperfeiçoamentos tinham levado a um sistema mundial, baseado no alcance das ondas curtas, que varavam os continentes. Nas nações mais fortes surgiram conglomerados privados ou públicos capazes de exercer grande difusão mundial, como as redes da CBS americana, da BBC britânica ou da DW alemã. Como o Brasil foi conduzido à guerra como integrante das Nações Unidas, o rádio brasileiro teve relações muito estreitas e especiais com os norte-americanos e britânicos durante o conflito.

Sachini Herath, Saghar Irandoust, Bowen Chen et al.

The paper proposes a multi-modal sensor fusion algorithm that fuses WiFi, IMU, and floorplan information to infer an accurate and dense location history in indoor environments. The algorithm uses 1) an inertial navigation algorithm to estimate a relative motion trajectory from IMU sensor data; 2) a WiFi-based localization API in industry to obtain positional constraints and geo-localize the trajectory; and 3) a convolutional neural network to refine the location history to be consistent with the floorplan. We have developed a data acquisition app to build a new dataset with WiFi, IMU, and floorplan data with ground-truth positions at 4 university buildings and 3 shopping malls. Our qualitative and quantitative evaluations demonstrate that the proposed system is able to produce twice as accurate and a few orders of magnitude denser location history than the current standard, while requiring minimal additional energy consumption. We will publicly share our code, data and models.