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Latin American Press Review, Program 1974-04, 1974 January 10
No full textPart I: Ongoing issues in Chile, including concerns over political prisoners and diplomatic tensions following the coup. Despite the junta's efforts to expedite military court proceedings, signs of resistance persist, such as strikes and diplomatic incidents. Developments in other Latin American countries, such as Venezuela's nationalization of Standard Oil holdings and Peru's expropriation of a North American mining firm. In Argentina, leftist groups challenge the Peronist regime, while incidents involving multinational companies highlight tensions between foreign investors and guerrilla groups. Part II: Insights into Brazil's economic development model explore its historical context and contemporary challenges. Despite Brazil's emergence as an industrial giant, stark inequalities persist, raising questions about poverty alleviation efforts and the distribution of economic gains. The analysis raises doubts about the effectiveness of past initiatives and underscores ongoing debates about Brazil's economic trajectory. Files include CSVs of the annotated transcriptions and lists of places, people, organizations, subjects, and media sources mentioned in the radio program
Latin American Press Review, Program 1973-26, 1973 September 13
No full textPart I: In Chile, the military's seizure of power followed Allende's refusal to resign amid escalating tension, including a truck owner strike and shifting political alliances. Allegations of US involvement and economic actions against Chile are highlighted as contributing factors to the instability. In March 1972, revelations of ITT's financial support for Allende's opponents exacerbated tensions. The report also covers the Organization of Non-Aligned Countries conference in Algeria, emphasizing solidarity against superpowers and advocating for sovereignty over national resources. Additionally, Peru's proposal to reform the Inter-American Treaty of Reciprocal Support is discussed, along with contrasting views on US influence in Latin American armed forces at the Inter-American Army conference in Caracas. The Confederation of Latin American Workers criticizes militarism, linking it to exploitation and citing examples in various countries. In Argentina, the Juventud Peronista, the youth wing of the Peronist movement, showed signs of growing strength, while Jose Lopez Rega, a prominent opponent of young militants, experienced a decline in influence. Despite internal tensions within the Peronist movement, recent developments suggested a broader acceptance of its diverse factions, with Peron initiating a reconciliation with the Peronist Youth. Part II: This analysis scrutinizes the US press coverage of President Allende's speech at the United Nations in December 1972, pointing out biases and omissions. Mr. John Pollock critiques the portrayal of political violence, the neglect of right-wing activities, and the failure to report economic and social progress under Allende. Additionally, multinational corporate influence in Chile, particularly by companies like Anaconda, Kennecott Copper, and ITT, is largely ignored in the coverage, creating a distorted image of Chilean politics. Files include CSVs of the annotated transcriptions and lists of places, people, organizations, subjects, and media sources mentioned in the radio program
EgoNRG: An Egocentric Multi-View Hand-Arm Segmentation and Classification Dataset for Real-World HRI in Military and Industrial Settings
No full textIntroduction
The Egocentric Navigation Robot Gestures (EgoNRG) dataset is an egocentric hand gesture dataset designed to improved Human-Robot Interactions (HRI) in real-world industry, military, and first response applications. It contains 3,000 classified gesture videos and 160,000 pixel-based segmented images captured from 32 different participants. The participants were captured performing 11 non-verbal gestures adopted from the Army Field Manual and 1 generic, deictic, pointing gesture referencing abstract objects in indoor and outdoor environments.
Highlights:
Joint hand and arm segmentations of each participants' left and right limb.
Participants' performed gestures with 1) long sleeves and gloves (wearing replica flame-resistant solid color clothing and military camouflage) and 2) bare skin to mimic conditions in real-world industrial and military environments.
Environments with and without background people visible.
Data captured in both indoor and outdoor environment at various points throughout the day (morning, midday, and dusk).
Data captured from four synchronized monochrome cameras each with a different perspective.
Gesture performed map directly to standard ground vehicle robot commands (stop, move forward, go left, move in reverse, etc.).
<img src="https://dataverse.tdl.org/api/access/datafile/760094"
alt=”egonrg_dataset_details">
Content
The dataset contains:
Videos from 32 participants (14 females / 18 males) in total performing 12 gestures in total. Participants were split into 4 groups of 8. Each group performed a set of 4 gestures.
3,044 (~2.5 hours) videos in total annotated with gesture type. Each gesture performed by each participant has four different recorded synchronized viewpoints associated with that gesture.
160,639 annotated frames with "Left Limb" and "Right Limb" pixel-based segmentations. The hands and arms of the participants were segmented together to create a joint segmentation for each respective limb.
Collection Method
The dataset was collected using the 4 VLC Monochrome cameras attached to the Microsoft HoloLens 2 headset. Each video stream provides an egocentric view of the participants hands and arms performing a wide variety of gestures from different perspectives. The perspectives include a wide left, central left, central right, and wide right camera that allows for detailed visual information of the gestures being performed across multiple cameras from multiple viewpoints. The headset streamed the video data to a remote server where the recorded data was synchronized and saved. Research assistants started and stopped the recording locally on board the headset via remote scripts. Three research assistants in total were tasked with the collection of the data over two months.
Annotations
The data was manually annotated by nine researchers. Three classes were assigned to each image: left limb, right limb, and background. Human annotators were instructed to annotate each limb as the joint hand and arm for all images they could tell the hand/arm of the participant was in the image. There were three steps to the annotation pipeline. The first step for the human annotators was to review left limb and right limb bounding boxes that were automatically generated using text prompts with GroundingDINO. Once the bounding boxes for each frame were varied, these images were then automatically segmented via Segment Anything 2 (SAM2) and reassembled into videos. These videos were then manually reviewed by the annotators with a tool that played the videos back at 1 FPS and the option to manually skip through the frames of the video. For each frame in the video that had incorrect pixel segmentations, annotators flagged these frames. Annotators then manually reviewed and fixed the pixel segmentations of the frames that were flagged. Each frame’s annotation was converted to a single PNG file, where the three classes were recorded: left hand, right hand, and background.
Example of Pixel Segmentation Annotations:
<img src="https://dataverse.tdl.org/api/access/datafile/760097"
alt=”egonrg_dataset_annotation_example">
Evaluation
Multiple semantic segmentation and gesture classification models were trained on the dataset. The official model training code and configurations for this dataset are on GitHub. The link to the public GitHub repository is provided in the Software metadata field below.
Human Subjects
This study was approved by the University of Texas at Austin Institutional Review Board (IRB) under the IRB ID: STUDY00000278-MOD10. To provide a comprehensive representation of collaborative scenarios, a diverse pool of participants was selected. Anyone who revoked their consent and expressed so was noted and removed from the data and the annotations.
Dataset Organization
The dataset is organized in the following format. It is recommended users first inspect the metadata under the metadata directory to understand which files should be used for their task. For an in-depth explanation of the dataset file structure, refer to the Dataset Report included in this dataset.
<img src="https://dataverse.tdl.org/api/access/datafile/760095"
alt=”egonrg_dataset_structure">
Dataset Quality Statement
The research team maintained high data quality by adhering to standardized procedures established at the start of dataset collection and throughout the process, ensuring consistency across all participants. All data was ethically sourced using approved protocols that prioritize participant welfare and informed consent. Comprehensive documentation was maintained during data collection to ensure traceability and facilitate auditing. All dataset contents were thoroughly documented in this report and associated repositories, ensuring transparency and reproducibility.
Further Information
More details could be found in the complete dataset report attached and linked below:
https://dataverse.tdl.org/api/access/datafile/760102
Download Dataset
1. Install Helper Script Dependencies
Create and activate a conda environment
conda create -n dataset-dl python==3.8
conda activate dataset-dl
Install python dependencies
pip install pyDataverse pandas requests
2. Setup TDR API KEY
Click on your name's drop down menu in the top right corner and select "API Token"
Generate and copy the API key.
In your terminal, create a TDR API key environment variable with the following command
export TDR_API_KEY=<api_key>
3. Download and Run Helper Script
Create a base directory on your machine
mkdir EgoNRG && cd EgoNRG
Download the python script from this TDR repo
wget --header="X-Dataverse-key: $TDR_API_KEY" -O "download_dataset.py" "https://dataverse.tdl.org/api/access/datafile/773700"
Run the script
python3 download_dataset.py ['--all', '--vids', '--imgs', '--masks', '--anns']
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Latin American Press Review, Program 1974-15, 1974 March 28
No full textPart I: The Latin American Press Review provides insights into recent events across the region, focusing on the fraudulent presidential elections in Guatemala, the power shifts in Brazil and Venezuela, and Brazilian support for the military coup in Chile. In Guatemala, allegations of election fraud marred the victory claim by General Eugene Laugerud, sparking protests and criticism of the authoritarian regime's tactics. Mexico City's Excelsior condemns the regime's violent suppression of dissent, exemplified by the murder of Edward Guerra, a former guerrilla. Excelsior's commentary extends to Brazil, where General Ernesto Geisel assumes the presidency, marking the continuation of military rule. The subdued inauguration contrasts with the presence of right-wing leaders, suggesting Brazil's role as a bulwark against progressive movements. The article underscores Brazil's economic growth, yet highlights its unequal distribution of wealth. Speculation on Brazilian influence in Chile's 1973 coup further underscores regional power dynamics. Dr. Depaiva, a mining engineer and key figure in a Rio de Janeiro anti-communist think tank, admits to aiding Chilean businessmen in preparing for President Allende's overthrow. Brazilian involvement in Chile's coup involved private and business interests, but there's no evidence of official government involvement. The coup in Chile mirrors Brazil's 1964 military takeover, with similar strategies and actors involved. Dr. Depaiva's recipe for destabilization involves economic chaos, fear of communism, and organizing mass demonstrations. The influence of Brazilian tactics is evident in Chile's anti-Allende efforts, including the creation of organizations like Poder Femenino, which mobilized women against leftist policies. Financial support from abroad, including from Chileans abroad and international business interests, played a significant role in destabilizing Allende's government. This report highlights the connections between Brazil's past coup and Chile's recent military takeover, as reported by the Washington Post. Files include CSVs of the annotated transcriptions and lists of places, people, organizations, subjects, and media sources mentioned in the radio program
Replication Data for Embodied Gatekeeping at C-SPAN
No full textThis data was used to test audience responses to free versus constrained cameras at C-SPA
Replication Data for: Temperature-dependent liquid water complex refractive index
No full textThis dataset provides the temperature-dependent complex refractive index of liquid water over wavelengths from 0.043 µm to 10 m and temperatures from 240 to 300 K in 10 K increments
Latin American Press Review, Program 1974-05, 1974 January 17
No full textPart I: US-Panama negotiations over the Panama Canal, with General Omar Torrijos emphasizing Panama's desire for sovereignty. President Nixon's proposal to Congress includes concessions, but Panama seeks elimination of US bases. Peru's expropriation of Cerro de Pasco Corporation's assets indicates a move towards economic nationalization, despite earlier apprehensions. Critics question US ambassador appointments due to CIA ties. Brazil's interest in Black Africa is driven by economic needs, but its ties with Portugal and South Africa complicate relations. Part II: A critical analysis of Brazil's economic model, highlighting social and political consequences. The military elite's pursuit of growth prioritizes foreign interests, exacerbating inequality and repression of the poor. The program underscores the need for inclusive economic policies and concludes by inviting feedback, emphasizing its role in providing Latin American news analysis. Files include CSVs of the annotated transcriptions and lists of places, people, organizations, subjects, and media sources mentioned in the radio program
Impact of Reversible Deactivation Radical Polymerizations (RDRPs) on the Gelation, Phase Separation, and Mechanical Properties of Polymer Networks
No full textPolymer networks are widely used in engineering and biomedical applications because they can sustain large deformations. However, their mechanical properties, particularly at large strains, remain challenging to design within their molecular architecture through conventional synthetic methods, as these offer limited control over the kinetics and thermodynamics of gelation and, in turn, the connectivity of the polymers. In this work, we leverage recent advances in Reversible Deactivation Radical Copolymerizations (RDRPs) to tune the kinetics and thermodynamics of gelation and explore their impact on the molecular architecture and mechanical properties of polymer networks. We demonstrate that RDRPs lead to delayed gelation, phase separation, and softer and more extensible networks relative to conventional free radical copolymerizations. The reversible deactivation of the radical chain ends slows the kinetics of gelation, segregates the network precursors or clusters into crosslinker-rich and crosslinker-poor phases, and narrows the distribution of chain lengths within the polymers. This impact of the kinetics of gelation on the molecular architecture affects the load distribution among the constituent polymers and the interplay between the small- and large-strain mechanical properties. Overall, this work paves the way for rationally using polymer chemistry to design advanced polymer networks for emerging and more stringent applications
Data for Online Neural Network Model Maintenance in the Presence of Drift using the Subset Extended Kalman Filter
No full textResults data from a study updating a subset of NN parameters identified using the gradient of the loss function with a modified Extended Kalman Filte