Christopher D. Richards

UE Centric DU Placement with Carrier Aggregation in O-RAN using Deep Q-Network Algorithm

Roghayeh Joda, Sima Naseri, Mona Hashemi, Christopher D. Richards

Open Radio Access Network (O-RAN) provides the capability to efficiently distribute the RAN Network Functions (NFs) such as the Radio Unit (RU), Distributed Unit (DU) and Centralized Unit (CU) in O-RAN Cloud (O-Cloud) nodes using virtualization, automation, intelligence and open interface specifications. …

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Benedict Delisle Burns. 22 February 1915—6 September 2001

Christopher D. Richards, Timothy V. P. Bliss

Ben Burns was a pioneer of operations research and of the statistical analysis of neuronal activity. During the war, Ben served in Solly Zuckermann's operations research unit, which included a period of active service in the Mediterranean. After the war he worked …

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Benzamil inhibits neuronal and heterologously expressed small conductance Ca2+-activated K+ channels

Marisol Sampedro Castañeda, Raffaella Tonini, Christopher D. Richards, Martin Stocker et autres

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Zanzibar: Google's consistent, global authorization system

Ruoming Pang, Ramón Cáceres, Mike Burrows, Zhifeng Chen et autres

Determining whether online users are authorized to access digital objects is central to preserving privacy. This paper presents the design, implementation, and deployment of Zanzibar, a global system for storing and evaluating access control lists. Zanzibar provides a uniform data model and …

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Minimum‐risk routing through a mapped minefield

Christopher D. Richards, Christopher Odom, David P. Morton, Alexandra M. Newman

Abstract We embed a directed graph G(V, E) in a representation of a naval minefield; vertices V represent waypoints and edges E denote possible segments for ship transit. A new model identifies a simple s‐t path through the minefield that minimizes the …

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Navigating free‐floating minefields via time‐varying Voronoi graphs

Christopher D. Richards, Dinesh P. Mehta

Despite their illegality, untethered free‐floating naval mines are increasingly employed as part of maritime area‐denial operations. By ignoring international treaties, these mines require less effort to acquire and deploy, and result in a far more dynamic‐threat environment. In order to assist commanders …

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Optimal Course Scheduling for United States Air Force Academy Cadets

Gerardo González, Christopher D. Richards, Alexandra M. Newman

Scheduling students and academic courses at the United States Air Force Academy (USAFA), a military commissioning source, has required unique software and considerable manual effort. The recent discontinuation of the Oracle-based student information system mandates that the USAFA superintendent invest in new …

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Nerve cells and their connections

Gillian Pocock, Christopher D. Richards, David A. Richards

This chapter examines the nervous system. The nervous system is adapted to provide rapid and discrete signalling over long distances. It is divided into the central nervous system (CNS) comprising the brain and spinal cord, and the peripheral nervous system comprising the …

Alveolar ventilation and blood gas exchange

Gillian Pocock, Christopher D. Richards, David A. Richards

This chapter examines the main function of the respiratory system, which is to provide the cells of the body with oxygen for the generation of metabolic energy and to remove the carbon dioxide produced by oxidative metabolism. To do so, it must …

The thyroid and parathyroid glands

Gillian Pocock, Christopher D. Richards, David Richards

This chapter focuses on the principal hormones secreted by the thyroid and the parathyroid glands. It looks at the thyroid gland which secretes two iodine-containing hormones, thyroxine (T4) and tri-iodothyronine (T3). These exert a wide variety of actions throughout the body. These …

The skin and thermoregulation

Gillian Pocock, Christopher D. Richards, David A. Richards

This chapter focuses on the skin, which is the largest organ in the body, covering the entire outer surface of the body. Together with the hair, nails, and glands, the skin forms an integumentary system. The chapter points out that the thickest …

Energy balance and the control of metabolic rate

Gillian Pocock, Christopher D. Richards, David A. Richards

This chapter looks at energy balance and metabolic rate and the various factors that influence them. The scale of the chemical reactions of the body can be gauged by considering the fact that an average human being uses about 360 litres of …