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Search Results (5)

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Keywords = child slaves

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19 pages, 888 KiB  
Article
Parallel Ant Colony Algorithm for Sunway Many-Core Processors
by Chao Han, Hao Xiong, Haonan Yang, Chaozhong Yang, Tao Xue and Feng Liu
Electronics 2025, 14(12), 2332; https://doi.org/10.3390/electronics14122332 - 7 Jun 2025
Viewed by 439
Abstract
Ant colony optimization (ACO) has garnered significant attention because of its wide application in route planning problems. Nevertheless, ACO requires a long time to calculate when tackling complex issues. Parallelization emerges as an effective strategy to improve algorithm execution efficiency, and especially in [...] Read more.
Ant colony optimization (ACO) has garnered significant attention because of its wide application in route planning problems. Nevertheless, ACO requires a long time to calculate when tackling complex issues. Parallelization emerges as an effective strategy to improve algorithm execution efficiency, and especially in large-scale computations, parallelization technology can significantly reduce execution time. In this study, we propose an ant colony algorithm (Sunway ant colony optimization, SWACO) based on a second-level parallel strategy and tailored to the hardware characteristics of Sunway many-core processors. The first level involves process-level parallelism, in which the initial ant colony is divided into multiple child ant colonies according to the number of processors, with each child ant colony independently performing computations on each island. The second level is thread-level parallelism, utilizing the computing power of the slave core to accelerate path selection and pheromone updates of the ants, thereby effectively improving algorithm execution efficiency. The experimental results demonstrate that, across multiple TSP datasets, the SWACO algorithm significantly reduces computation time, achieving an overall speedup ratio by 3–6 times, and maintains the gap within 5%. A substantial acceleration effect was achieved. Full article
(This article belongs to the Special Issue Computer Architecture & Parallel and Distributed Computing)
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21 pages, 280 KiB  
Article
Child Soldiers/Child Slaves: Africa’s Weaponised Unfree Children in Blood Diamond (2006) and Beasts of No Nation (2015)
by Lauren Van der Rede
Genealogy 2024, 8(2), 46; https://doi.org/10.3390/genealogy8020046 - 25 Apr 2024
Viewed by 3539
Abstract
The figure of the child is one that, at least in the Westernised imagination, is entangled with notions of innocence, naivety, and freedom. But what of the child who is unfree, who has been stripped of innocence, and for whom naivety is a [...] Read more.
The figure of the child is one that, at least in the Westernised imagination, is entangled with notions of innocence, naivety, and freedom. But what of the child who is unfree, who has been stripped of innocence, and for whom naivety is a danger? One expression of this iteration of the figure of the child is the child soldier, which has been a centralising figure in various narratives set during and concerned with African experiences of warfare. This paper is concerned with the figure of the child soldier as it is staged in both Edward Zwick’s Blood Diamond (2006) and Cary Joji Fukunaga’s filmic adaptation of Uzodinma Iweala’s novel, Beasts of No Nation (2015). In turning to Ashis Nandy’s articulation of the tension held within “the child” as being both emblematic of a fantasy of childhood produced by adult nostalgia—hopeful, joyous and free—and always potentially dangerous, this paper pivots the notions of soldiering and slaving on and around the child as a figure. In doing so, the paper asks what it might mean to think of the condition of being a child soldier as being akin to that of being a child slave, weaponised for political and economic ends. Full article
(This article belongs to the Special Issue Retrospectives on Child Slavery in Africa)
17 pages, 3588 KiB  
Article
Obstacle Avoidance Path Planning for the Dual-Arm Robot Based on an Improved RRT Algorithm
by Wubin Shi, Ke Wang, Chong Zhao and Mengqi Tian
Appl. Sci. 2022, 12(8), 4087; https://doi.org/10.3390/app12084087 - 18 Apr 2022
Cited by 35 | Viewed by 6435
Abstract
In the future of automated production processes, the manipulator must be more efficient to complete certain tasks. Compared to single-arm robots, dual-arm robots have a larger workspace and stronger load capacity. Coordinated motion planning of multi-arm robots is a problem that must be [...] Read more.
In the future of automated production processes, the manipulator must be more efficient to complete certain tasks. Compared to single-arm robots, dual-arm robots have a larger workspace and stronger load capacity. Coordinated motion planning of multi-arm robots is a problem that must be solved in the process of robot development. This paper proposes an obstacle avoidance path planning method for the dual-arm robot based on the goal probability bias and cost function in a rapidly-exploring random tree algorithm (GA_RRT). The random tree grows to the goal point with a certain probability. At the same time, the cost function is calculated when the random state is generated. The point with the lowest cost is selected as the child node. This reduces the randomness and blindness of the RRT algorithm in the expansion process. The detection algorithm of the bounding sphere is used in the process of collision detection of two arms. The main arm conducts obstacle avoidance path planning for static obstacles. The slave arm not only considers static obstacles, but also takes on the role of the main arm at each moment as a dynamic obstacle for path planning. Finally, MATLAB is used for algorithm simulation, which proves the effectiveness of the algorithm for obstacle avoidance path planning problems for the dual-arm robot. Full article
(This article belongs to the Topic Industrial Robotics)
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6 pages, 213 KiB  
Article
The Story of the Black Family: What It Means to Be Black with an Interracial Family Tree
by Joy Anderson
Genealogy 2021, 5(1), 6; https://doi.org/10.3390/genealogy5010006 - 14 Jan 2021
Viewed by 3903
Abstract
This paper is using a critical personal narrative and decolonialization theory to share the story of my family. It is the story of my great-grandfather, who was the child of a slave master and a house servant, and his story of survival, using [...] Read more.
This paper is using a critical personal narrative and decolonialization theory to share the story of my family. It is the story of my great-grandfather, who was the child of a slave master and a house servant, and his story of survival, using historical documents. Race and racism have been a part of my family from its origin, because of the cultural and social meanings of Blackness, which are discussed in the article. Full article
(This article belongs to the Special Issue Genealogy and Critical Family History)
10 pages, 296 KiB  
Article
Treating Systemic Lupus Erythematosus (SLE): The Impact of Historical Environmental Context on Healthcare Perceptions and Decision-Making in Charleston, South Carolina
by Wendy Rodgers, Edith M. Williams, Brittany L. Smalls, Tyler Singleton, Ashley Tennessee, Diane Kamen and Gary Gilkeson
Int. J. Environ. Res. Public Health 2020, 17(7), 2285; https://doi.org/10.3390/ijerph17072285 - 28 Mar 2020
Cited by 2 | Viewed by 3519
Abstract
Introduction: Over 400,000 slaves were taken from Africa and brought to Charleston, South Carolina, as part of the transatlantic slave trade during the 18th and 19th centuries. Due to these negative historical events, the healthcare of African Americans in Charleston may be compromised [...] Read more.
Introduction: Over 400,000 slaves were taken from Africa and brought to Charleston, South Carolina, as part of the transatlantic slave trade during the 18th and 19th centuries. Due to these negative historical events, the healthcare of African Americans in Charleston may be compromised in regard to chronic illnesses and other conditions affecting minorities, such as lupus. Materials and Methods: The current study used an ethnographic approach to obtain the perspectives of lupus patients with the goal of identifying gaps within current research. In addition to patient perspectives, the geographical location of Charleston, South Carolina was considered through inquiries around culture, community, advocacy, and client/patient interaction to establish a narrative for the themes that emerged. Results: The eleven major themes identified were connectedness, knowledge, experience with lupus, compliance, clinical trial participation, career and planning for the future, visits, access to resources, lifestyle, transition from child to adult care, and an overarching theme of self-management. Conclusion: Understanding healthcare perceptions and decision-making among culturally diverse populations, particularly those who have been defined by centuries of substandard care, marginalization, exploitation, and distrust, is critical to the development of culturally tailored interventions designed to improve patient outcomes and reduce health disparities. Full article
(This article belongs to the Special Issue Community-Engaged Research to Promote Environmental Health, Sustainability, and Community Resiliency)
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