scholarly journals Developing political-ecological theory: The need for many-task computing

PLoS ONE ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. e0226861
Author(s):  
Timothy Haas

Models of political-ecological systems can inform policies for managing ecosystems that contain endangered species. To increase the credibility of these models, massive computation is needed to statistically estimate the model’s parameters, compute confidence intervals for these parameters, determine the model’s prediction error rate, and assess its sensitivity to parameter misspecification. To meet this statistical and computational challenge, this article delivers statistical algorithms and a method for constructing ecosystem management plans that are coded as distributed computing applications. These applications can run on cluster computers, the cloud, or a collection of in-house workstations. This downloadable code is used to address the challenge of conserving the East African cheetah (Acinonyx jubatus). This demonstration means that the new standard of credibility that any political-ecological model needs to meet is the one given herein.

2019 ◽  
Author(s):  
Timothy C. Haas

AbstractModels of political-ecological systems can inform policies for managing ecosystems that contain endangered species. One way to increase the credibility of these models is to subject them to a rigorous suite of data-based statistical assessments. Doing so involves statistically estimating the model’s parameters, computing confidence intervals for these parameters, determining the model’s prediction error rate, and assessing its sensitivity to parameter misspecification.Here, these statistical algorithms along with a method for constructing politically feasible policies from a statistically fitted model, are coded as JavaSpaces™ programs that run as compute jobs on either supercomputers or a collection of in-house workstations. Several new algorithms for implementing such jobs in distributed computing environments are described.This downloadable code is used to compute each job’s output for the management challenge of conserving the East African cheetah (Acinonyx jubatus). This case study shows that the proposed suite of statistical tools can be run on a supercomputer to establish the credibility of a managerially-relevant model of a political-ecological system that contains one or more endangered species. This demonstration means that the new standard of credibility that any political-ecological model needs to meet before being used to inform ecosystem management decisions, is the one given herein.


2021 ◽  
Vol 13 (2) ◽  
pp. 485
Author(s):  
Blanca L. Díaz Mariño ◽  
Frida Carmina Caballero-Rico ◽  
Ramón Ventura Roque Hernández ◽  
José Alberto Ramírez de León ◽  
Daniel Alejandro González-Bandala

Understanding the value of research for society has become a priority, and several methodologies have been developed to assess the social impact of research. This study aimed to determine how productive interactions are developed during the execution of research projects. A retrospective study was conducted on 33 projects from 1999 to 2020. Semi-structured interviews with the technical managers were conducted to analyze how different actors of the project—researchers, government officials, and civil society and private sector stakeholders—were involved, illustrating how productive interactions occur in specific biodiversity contexts. The results revealed different levels and intensities of productive interactions; on the one hand, three projects involved all actors; eight involved researchers outside the institution; and 25 involved community members. The number of participants ranged from 2 to 37. All research evaluated had a disciplinary orientation. The type and time of interactions with other interested parties depended on the amount of funding, project type, project duration, and, significantly, on the profile of the technical manager. The importance of assessing and valuing productive interactions was identified as a fundamental element in promoting the social impact of research, as well as integrating inter- or multidisciplinary projects that impact the conservation of socio-ecological systems.


2010 ◽  
Vol 1 (2) ◽  
pp. 149
Author(s):  
José L. De Nicolás Sánchez ◽  
Mariana Correia ◽  
Juan A. Villasante

<p>The project, cofinanced by the line of the UE “INTERREG IIIA”, was focused, on the one hand, in Identification, Study, Cataloguing and Valuation of missing and preserved components of defensive fortifications, located in the geographical area under study. On the other hand were put up in virtual paths different fortifications that made up the defensive system. Besides, the foundations were laid for the development of sustainable Management Plans for the property, with the consequent strengthening of local identities and the improvement of the local tourist promotion. In popularization phase, a Database website was developed and it will be enriched by military history experts, and the results were announced in conferences and exhibitions.</p>


The Somali militant Islamist and proto-state insurgent organization known as “Al-Shabaab” (Harakat Al-Shabaab al-Mujahideen in Arabic and Xarakada Mujaahidiinta Al Shabaab in Somali) is a group with multiple layers of identity. Ranging from the local and national to the regional and transnational, it is a group whose multifaceted self-perception and public portrayals have been some of its greatest sources of endurance since its emergence in 2006. On the one hand, Al-Shabaab’s ideology, goals, and membership are grounded in the domestic Somali context, though it has been able to localize and establish networks of sympathizers and recruits in neighboring East African states, including in Kenya, Ethiopia, Tanzania, and Uganda. On the other hand, Al-Shabaab is also the official East African affiliate of the transnational militant Islamist group al-Qaeda. Al-Shabaab first emerged publicly in 2006 as the most radical faction within the military wing of the Islamic Courts Union (ICU). The ICU succeeded in forming a coalition that led to the establishment of an environment of both relative law and order as well as economic stabilization. When, in 2006, the Ethiopian military invaded Somalia and occupied parts of the country to prop up the Somali Transitional Federal Government (TFG), the ICU collapsed. Al-Shabaab emerged as an independent group spearheading a growing insurgency against Ethiopian military forces and, later, African Union Mission in Somalia (AMISOM) peacekeepers. Beginning in 2008, as Al-Shabaab started to rapidly capture territory, it pursued the establishment of civil-governing mechanisms in areas it controlled. These mechanisms and institutions included a judiciary, police force (the Jaysh al-Hisba), a military wing (the Jaysh al-Usra), and offices of taxation, political affairs and clan relations, education, religious affairs and missionary propagation (daʿwa), health services, agriculture, and social services and charity programs, including a drought and humanitarian relief committee. Alongside its domestically rooted identity, Al-Shabaab also has a transnational, globalist aspect to its organizational identity and is an official affiliate of al-Qaeda, with its leadership having pledged allegiance to the group publicly in February 2012, an oath accepted by al-Qaeda chief Ayman al-Zawahiri. As of 2021—and despite national, bilateral, and multilateral efforts to combat it—Al-Shabaab continues to operate as both an insurgency and a proto-state power, controlling and governing wide swathes of land within the southern, central, and western parts of the country. This article seeks to provide an overview of the best literature available on the history, evolution, activities, and multifaceted identity of Al-Shabaab as an organization with local/domestic Somali, regional East African, and transnational/globalist markers. While existing literature on the group is heavily focused on security issues, more-recent studies have also begun to pay more attention to other aspects of the group, including its proto-state governance and engagement with domestic Somali and local dynamics in other East African countries.


Author(s):  
Genevieve Marie Johnson ◽  
Audrey Cooke

Ecological theory conceptualized the student as surrounded by a series of environmental systems and the processes of learning as interaction between the student (i.e., bioecology) and the systems (i.e., microsystem, exosystem and macrosystem). This chapter synthesizes the literature and proposes an ecological model of student interaction in online learning environments. Specifically, learner-learner, learner-instructor and learner-content interactions occur in the microsystem and are mediated by the interface subsystem. Student microsystemic interactions influence and are influenced by the instructional design exosystem. The macrosystem reflects the indirect influence of university culture on all aspects of the microsystem, exosystem and interface subsystem. The chronosystem captures the effect of time on the student and on all ecological systems (e.g., students mature and university culture evolves)


Author(s):  
Lisa Bortolotti ◽  
Rachel Gunn

In a clinical context, delusions are symptoms of a number of psychiatric disorders including schizophrenia and dementia, manifesting as beliefs that are implausible and resistant to counter-evidence. In the philosophical literature, the nature of delusions (what they are) and their formation (what causes them) have been examined with increasing interest. Different arguments for and against delusions being regarded as beliefs have been put forward, and both the doxastic and the anti-doxastic camp capture some distinctive and puzzling features of delusions. The one-factor theory, the two-factor theory, and the prediction-error theory constitute distinct attempts to describe the causal mechanisms responsible for the formation of delusions and have implications for the management and treatment of delusions in clinical practice. The lively debates surrounding the nature and the causal history of delusions have also shed some light on standard issues in the philosophy of mind, such as what conditions a report needs to satisfy to be regarded as a belief report, and how experience and reasoning interact in generating of hypotheses that can then be accepted as beliefs.


2002 ◽  
Vol 2 ◽  
pp. 255-260 ◽  
Author(s):  
Simone Bastianoni

So-called orientors have been introduced at the interface between ecology and thermodynamics. Two have been chosen here to compare the characteristics of five ecological systems: exergy, which is related to the degree of organization of a system and represents the biogeochemical energy of a system, and emergy, which is defined as the total amount of solar energy directly or indirectly required to generate a product or a service. They represent two complementary aspects of a system: the actual state and the past work needed to reach that state. The ratio of exergy to the emergy flow indicates the efficiency of an ecosystem in producing or maintaining its organization.The main system under study is a portion of the Venice Lagoon, which is used as a fish farming basin. Four other aquatic ecosystems were considered for comparison. Results show that the ecosystem within the Venice Lagoon is the one with the highest efficiency in transforming the available inputs in organization of the system. This fact is due to human intervention, which is very limited but also very effective.


Utafiti ◽  
2020 ◽  
Vol 14 (2) ◽  
pp. 223-241
Author(s):  
Frans Wijsen ◽  
Peter Tumainimungu Mosha

Abstract During the 2015 general election campaigns in Tanzania, a controversy arose between the ruling party and the opposition coalition, concerning the proposed constitution draft and the position of Zanzibar within the Union. Beyond this controversy, there have existed the impacts of Islamic revivalism on the one hand, and a fear for the perpetuation of Islam in Tanzania on the other – issues which have played a significant role in the country since Independence. In this paper, we focus in particular upon popular Muslim preachers, such as Ponda Issa Ponda, who complain that the National Muslim Council of Tanzania [BAKWATA] is just an extension of the mainstream government – an organisation which is unsympathetic to Muslims’ interests, which violates Muslims’ rights, and which functions contrary to its own purpose. This complaint draws on long-term memory, reaching back even further than the 1968 banning of the East African Muslims Welfare Society [EAMWS]. Two interesting questions are addressed here concerning a central state’s involvement in religious affairs under multi-party rule: How has the Tanzanian government managed religious diversity? And how should its management style be evaluated, given the perspective that has developed with the shift in focus from ‘government’ to ‘governance’ in policy and management sciences?


Zootaxa ◽  
2012 ◽  
Vol 3493 (1) ◽  
pp. 35 ◽  
Author(s):  
RICCARDO CASTIGLIA ◽  
FLAVIA ANNESI

The taxonomy of the East African Muridae belonging to the Acomys spinosissimus Peters 1852 species complex has been recently revised (Verheyen et al., 2011). Two new species have been described by means of external morphologic analysis, craniometry, enzymes, mitochondrial DNA sequences and karyological information. For one of the two new species, Acomys ngurui Verheyen et al. 2011, a polymorphic karyotype has been observed. In fact, for 19 of the 22 karyotyped individuals, the karyotype is identical to the one described for A. spinosissimus s. s. (2n = 60, aFN = 68), characterized by a sex chromosome constitution of the XX/XY type, with an acrocentric X and a submetacentric Y (Dippenaar and Rautenbach, 1986). The remaining three females possess a karyotype that resembles the one reported by Matthey (1965) and Barome et al. (2001) characterized by a unique giant metacentric X chromosome (Xg), and by a variable diploid number (2n = 59–62). These females were found in the three localities in Tanzania together with specimens with the typical ‘spinosissimus’ karyotype. Specimens carrying the Xg were not distinguishable on the basis of their mtDNA sequence or morphology from the other specimens with XY karyotype (Verheyen et al., 2011). The authors concluded that the available evidence did not allow one to give taxonomic value to this chromosomal configuration, characterized by a particular sex determination, hoping for future work that will study the animals bearing this typical karyotype in more detail.


1975 ◽  
Vol 7 (2) ◽  
pp. 145-160 ◽  
Author(s):  
Michael Thomason

They were unlikely choices for revolutionaries and hardly the haughty autocrats the phrase “Little Tin Gods” conjures up. Yet many East African district officers felt it their duty to change the lives of the Africans they ruled, and against great odds they did. Sent out by their superiors in London and Nairobi as policemen and tax collectors, they saw themselves as secular missionaries for a superior culture. Working in the decade before the catastrophic first world war, they were the last generation of Europeans who easily believed their own superiority. Under pressure to produce revenue many district commissioners fostered economic development as a first step in reforming African society. They wished to develop an exchange economy based upon the fruits of a settled and productive peasantry working on its own land. They believed the Africans would adopt the basic values of hard work and even self-reliance, making an Edwardian revolution. If their assumptions about social change, economics, or even civilization itself seem unsophisticated, it is because they were amateurs. They had few resources beyond their own confidence and sense of mission. They began a revolution, but it was not the one they intended for they failed to retrieve colonial Kenya from the clutches of a handful of white settlers. Their vision of peaceful prosperity for the Africans was ultimately denied, and the hopes they raised became murderous frustrations. They offered Kenya an alternative course which imperialism could not accept.Kenya's first district officers came from diverse backgrounds, but most shared the middle class values they proposed for the Africans.


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