20 papers · ranked by Valyu relevance
Andrew D. Letten
Mechanistic models of resource competition underpin numerous foundational concepts and theories in ecology, and continue to be employed widely to address diverse research questions. Nevertheless, current software tools present a comparatively steep barrier to entry. I introduce the R package rescomp to support the…
Emmy Blumenthal, Pankaj Mehta
A fundamental problem in ecology is to understand how competition shapes biodiversity and species coexistence. Historically, one important approach for addressing this question has been to analyze Consumer Resource Models (CRMs) using geometric arguments. This has led to broadly applicable principles such as Tilman’s…
E. Penelope Holland, Alex James, Wendy A. Ruscoe, Roger P. Pech + 2 more
Accurate predictions of the timing and magnitude of consumer responses to episodic seeding events (masts) are important for understanding ecosystem dynamics and for managing outbreaks of invasive species generated by masts. While models relating consumer populations to resource fluctuations have been developed…
Anna C. Vinton, David A. Vasseur
Recent work has demonstrated that changes in resource availability can alter a consumer's thermal performance curve (TPC). When resources decline, the optimal temperature and breadth of thermal performance also decline, leading to a greater risk of warming than predicted by static TPCs. We investigate the effect of…
Leo Ledru, Jimmy Garnier, Océane Guillot, Erwan Faou + 2 more
Phenotypic plasticity has important ecological and evolutionary consequences. In particular, behavioural phenotypic plasticity such as adaptive foraging (AF) by consumers, may enhance community stability. Yet little is known about the ecological conditions that favor the evolution of AF, and how the evolutionary…
Arnaud Sentis, Bart Haegeman, José M. Montoya
Temperature and nutrients are two of the most important drivers of global change. Both can modify the elemental composition (i.e. stoichiometry) of primary producers and consumers. Yet their combined effect on the stoichiometry, dynamics and stability of ecological communities remains largely unexplored. To fill this…
Stacey Butler, James O’Dwyer
Resource-limited complex systems are ubiquitous in the natural world, as is the potential for instability in such systems. Classic models of interacting species have provided a basis for our understanding of stability in these systems, and suggest that stable coexistence requires weak, rare, and asymmetric…
J.H.J. van Opheusden, Lia Hemerik, Wopke Van der Werf
The Tilman model of consumers competing for resources has some aspects that appear counterintuitive. Within the standard Tilman model for a single consumer and a single resource, when a very efficient consumer rapidly eats all available food, the resource density becomes zero, but if there is no food, how can the…
Chet F. Rakocinski
The functional response, or rate of resource acquisition for a consumer should decline proportionately in the presence of other consumers vying for the same resources. Aggressive behavior should be adaptive when it serves as a leverage mechanism for enhancing resource gain above what would be obtained under a premise…
Claire Harris, Henry Ko, Cara Waller, Pamela Sloss + 1 more
Background This is the fourth in a series of papers reporting a program of Sustainability in Health care by Allocating Resources Effectively (SHARE) in a local healthcare setting. Healthcare decision-makers have sought to improve the effectiveness and efficiency of services through removal or restriction of practices…
Ceyhun Eksin, H. Deliç, Alejandro Ribeiro
—The performance of an energy system under a realtime pricing mechanism depends on the consumption behavior of its customers, which involves uncertainties. In this paper, we consider a system operator that charges its customers with a real-time price that depends on the total realized consumption. Customers have…
Diego Vallarino
Understanding consumer choice is fundamental to marketing and management research, as firms increasingly seek to personalize offerings and optimize customer engagement. Traditional choice modeling frameworks, such as multinomial logit (MNL) and mixed logit models, impose rigid parametric assumptions that limit their…
Alex Burnap, John R. Hauser
Predicting future successful designs and corresponding market opportunity is a fundamental goal of product design firms. There is accordingly a long history of quantitative approaches that aim to capture diverse consumer preferences, and then translate those preferences to corresponding "design gaps" in the market. We…
Dawne Skinner, John Blake, Mohammed Al-Mahish
A variety of approaches to reducing the environmental impact of food production and consumption are being explored including technological solutions, such as food produced via biotechnological processes. However, the development of these technologies requires significant upfront investment and consumer acceptance is…
Ryosuke Yokoi, Masaharu Motoshita, Takeshi Matsuda, Norihiro Itsubo
External Costs of Abiotic Resource Use Based on User Cost Model in Life Cycle Impact Assessment Authors: ['Ryosuke Yokoi' 'Masaharu Motoshita' 'Takeshi Matsuda' 'Norihiro Itsubo'] Abiotic resources are indispensable in society, but there are concerns regarding their depletion, scarcity, and increasing prices, resulting…
Evan Erickson, Jiaze Ma, Philip Tominac, Horacio Aguirre-Villegas + 1 more
Existing plastic recycling infrastructure largely relies on mechanical recycling technologies, which are capable of processing only a small subset of waste plastics. Emerging chemical technologies can “upcycle” plastic waste by producing high-value products (e.g., olefins that can be used to produce virgin-grade…
Isaiah Farahbakhsh, Chris T. Bauch, Madhur Anand
Humans and the environment form a single complex system where humans not only influence ecosystems but also react to them. Despite this, there are far fewer coupled human-environment system (CHES) mathematical models than models of uncoupled ecosystems. We argue that these coupled models are essential to understand the…
Julen Gonzalez-Redin, J. Gareth Polhill, Terence P. Dawson, Rosemary Hill + 2 more
'Rosemary Hill' 'Iain J. Gordon' 'María Carmen Díaz Roldán'] A debt-based economy cannot survive without economic growth. However, if private debt consistently grows faster than GDP, the consequences are financial crises and the current unprecedented level of global debt. This policy dilemma is aggravated by the lack…
Sheng Dai, Natalia Kuosmanen, Timo Kuosmanen, Juuso Liesiö
Optimal allocation of resources across sub-units in the context of centralized decisionmaking systems such as bank branches or supermarket chains is a classical application of operations research and management science. In this paper, we develop quantile allocation models to examine how much the output and productivity…
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Drinking straws present a simple form factor for evaluating material design strategies taken by manufacturers to achieve circular, sustainable, and non-persistent products in response to global restrictions and consumer sentiment. We investigated thirteen on-the-market drinking straws of varying formulations…