Tracking Coastal Sharks with small boats: Hammerhead Shark Pups as a case study

1992 ◽  
Vol 43 (1) ◽  
pp. 61 ◽  
Author(s):  
KN Holland ◽  
CG Lowe ◽  
JD Peterson ◽  
A Gill
Keyword(s):  
Acoustic Telemetry ◽  
Core Area ◽  
Operating Costs ◽  
Viable Option ◽  
Hammerhead Shark ◽  
The Core ◽  
Wide Range ◽  
Communication Equipment

Acoustic telemetry techniques have been adapted for use with small boats to facilitate tracking of nearshore reef species. In addition to permitting tracking in areas where manoeuvrability and quick responses are required, the system has modest operating costs that make tracking experiments a viable option for a wide range of researchers. Tracking and communication equipment can be powered for several days by a single 12-V 8D truck battery. Current topics in shark biology that are amenable to these tracking techniques are discussed. For instance, hammerhead pups have been tracked on their natal grounds for periods of up to 13 days. Their daytime movements appeared to be restricted to a well defined 'core area' where a school of sharks hovered between 1 and 3 m off the lagoon floor. At night, the sharks became more active, expanding their range of movements before returning to the core area the next morning.

Creating continuous areas of old forest in long-term forest planning

2000 ◽  
Vol 30 (11) ◽  
pp. 1817-1823 ◽  
Author(s):  
Karin Öhman
Keyword(s):  
Net Present Value ◽  
Problem Formulation ◽  
Core Area ◽  
Northern Sweden ◽  
Present Value ◽  
The Core ◽  
Long Range Planning ◽  
The Cost

Harvest activities tend often to create landscapes where the old forest is fragmented into isolated patches that provide marginal conditions for species that inhabit forest interiors. This paper presents a long-range planning model designed to maximize the net present value and to create continuous patches of old forest. In this model, the spatial structure of old forest is controlled by core area and edge habitats. Core area is defined as the area of old forest that is free of edge effects from surrounding habitats. The core area requirement is set to a fixed value for each of a number of time periods, whereas the area of edge habitats, which should be as small as possible, is weighted against the net present value. The model is applied in a case study to an actual landscape consisting of 755 stands of forest in northern Sweden and solved using simulated annealing. The results show that distinct continuous patches of old forest are created when both a core area requirement and consideration of the amount of edge habitats are included in the problem formulation. The cost of creating continuous areas of old forest was found to be significant.

A race against time: monitoring the necropolis and the territory of Cyrene and Giarabub through protocols of remote sensing and collaboration with Libyan colleagues

2017 ◽  
Vol 48 ◽  
pp. 69-103 ◽  
Author(s):  
Oliva Menozzi ◽  
Eugenio Di Valerio ◽  
Clara Tamburrino ◽  
Abdulrahim Saleh Shariff ◽  
Vincenzo d'Ercole ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Local People ◽  
Core Area ◽  
The Core ◽  
Psychological Barrier ◽  
Police Control ◽  
Large Sections

AbstractThe core area of Cyrene, despite recent upheavals, benefits from well-managed controls and fences that so far seem to have stopped the looting, although not the vandalism. These fences act mainly as a psychological barrier; for the local people, everything inside the fences is seen as ‘more important’ than what is outside. However, it is impossible to enclose all the monumental tombs, rock-cut sanctuaries and ancient farms and fortifications. The first type of damage we see is due to looting, which is increasing, and acts of vandalism. The lack of regulation and police control as well as increased urbanisation have caused a lot of uncontrolled building, causing the further destruction of large sections of the necropolis. A second type of damage is due to the lack of maintenance. In order to help restore the sites, the Universities of Urbino, Chieti, Roma 3, Naples 2 and the Mission of the MIBACT at Giarabub, in collaboration with the DoA, have organised courses on ‘Rescue restoration in emergency’. Despite the growing number of inspectors and technicians in Cyrene, there are still not enough archaeologists, guards or restorers. This paper explains these general issues and, as a case study, the remote but important area of Giarabub.

scholarly journals Analysis of the Characteristics of Residential Function in the Mountainous Cities (Case Study: Rwandz City – Erbil Governorate – Iraq)

2020 ◽  
Author(s):  
Kamaran Mahmood
Keyword(s):  
Regression Model ◽  
Correlation Coefficient ◽  
Real Life ◽  
Statistical Techniques ◽  
Human Needs ◽  
The Core ◽  
Wide Range ◽  
Basic Human Needs ◽  
Statistical Relationships

House is the haven that keeps people from natural and human conditions, it gives them trust, safety, and steadiness. It is one of the most basic human needs this became a serious function which cities offer, and became one of the most important aspects which caught urban researchers interest, they take into consideration a wide range of architectural, social, and economic indicators. The study aims to provide an overall conception of Rwandz residential functions, using a collection of parameters and some GIS and statistical techniques, to help establish plans and future projects to improve the growth of this city and other towns and cities in that area. The study found that the old parts of Rwandz city which are located in the core, differ from the outer parts which are relatively newer in many properties, generally, the core is more densely populated than the outer, bigger family size, more illiteracy, and unemployment, few incomes, older houses, smaller houses, in the opposite of the outer parts. Besides, the study tested the correlation coefficient between the criteria; it found some strong statistical relationships between them, which reflected some real-life properties of the residential function. Lastly, the study designed a regression model to predict the main residential function criteria.

scholarly journals Network Modeling and Dynamic Mechanisms of Multi-Hazards—A Case Study of Typhoon Mangkhut

Water ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 2198
Author(s):  
Yilong Niu ◽  
Jiayi Fang ◽  
Ruishan Chen ◽  
Zilong Xia ◽  
Hanqing Xu
Keyword(s):  
Heavy Rain ◽  
Economic Loss ◽  
Spatial Dimension ◽  
Core Area ◽  
Bipartite Network ◽  
Time Dimension ◽  
Damage Area ◽  
The Core ◽  
Disaster Loss

Coastal areas are home to billions of people and assets that are prone to natural disasters and climate change. In this study, we established a disaster network to assess the multi-hazards (gale and heavy rain) of typhoon disasters, specifically Typhoon Mangkhut of 2018 in coastal China, by applying the methodology of a bipartite network in both time dimension and spatial dimension. In this network, the edge set and adjacent matrix are based on the connection between an hour and a city with a multi-hazards impact that includes gales and heavy rain. We analyze the characteristics and structure of this disaster network and assess the multi-hazards that arose from Typhoon Mangkhut in different areas. The result shows that there are 14 cities in the core area and 21 cities in the periphery area, based on core–periphery classification in the disaster network. Although more damage area belongs to the periphery area, the percentage of the population affected by the typhoon and direct economic loss in GDP in the core area was 69.68% and 0.22% respectively, which is much higher than in the periphery area (55.58% and 0.06%, respectively) The core area suffered more from multi-hazards and had more disaster loss. This study shows that it is feasible to assess multiple hazards with a disaster network based on the bipartite network.

scholarly journals Targeted strategies for the management of wildlife diseases: the case of brucellosis in Alpine ibex

2021 ◽  
Vol 52 (1) ◽  
Author(s):  
Sébastien Lambert ◽  
Anne Thébault ◽  
Sophie Rossi ◽  
Pascal Marchand ◽  
Elodie Petit ◽  
...  
Keyword(s):  
Brucella Melitensis ◽  
Management Strategies ◽  
Core Area ◽  
Detailed Knowledge ◽  
Wildlife Diseases ◽  
Management Options ◽  
The Core ◽  
Alpine Ibex ◽  
Conservation Costs ◽  
Wide Range

AbstractThe management of infectious diseases in wildlife reservoirs is challenging and faces several limitations. However, detailed knowledge of host–pathogen systems often reveal heterogeneity among the hosts’ contribution to transmission. Management strategies targeting specific classes of individuals and/or areas, having a particular role in transmission, could be more effective and more acceptable than population-wide interventions. In the wild population of Alpine ibex (Capra ibex—a protected species) of the Bargy massif (French Alps), females transmit brucellosis (Brucella melitensis) infection in ~90% of cases, and most transmissions occur in the central spatial units (“core area”). Therefore, we expanded an individual-based model, developed in a previous study, to test whether strategies targeting females or the core area, or both, would be more effective. We simulated the relative efficacy of realistic strategies for the studied population, combining test-and-remove (euthanasia of captured animals with seropositive test results) and partial culling of unmarked animals. Targeting females or the core area was more effective than untargeted management options, and strategies targeting both were even more effective. Interestingly, the number of ibex euthanized and culled in targeted strategies were lower than in untargeted ones, thus decreasing the conservation costs while increasing the sanitary benefits. Although there was no silver bullet for the management of brucellosis in the studied population, targeted strategies offered a wide range of promising refinements to classical sanitary measures. We therefore encourage to look for heterogeneity in other wildlife diseases and to evaluate potential strategies for improving management in terms of efficacy but also acceptability.

Patchwork of Industrial Neighborhoods around São Paulo Core Area: Mooca’s Case Study

2017 ◽  
Vol 03 (05) ◽  
pp. 314-324
Author(s):  
Adilson Costa Macedo ◽  
Gastão Santos Sales ◽  
Maria Isabel Imbronito
Keyword(s):  
Sao Paulo ◽  
Core Area ◽  
São Paulo

Possessing the Iconic Book

2012 ◽  
Vol 6 (1-3) ◽  
pp. 309-329
Author(s):  
Claudia V. Camp
Keyword(s):  
Second Century ◽  
Religious Literature ◽  
Ben Sira ◽  
The Core ◽  
The Bible ◽  
Iconic Status ◽  
The Voice ◽  
Woman Wisdom ◽  
Martin Marty

I propose that the notion of possession adds an important ideological nuance to the analyses of iconic books set forth by Martin Marty (1980) and, more recently, by James Watts (2006). Using the early second century BCE book of Sirach as a case study, I tease out some of the symbolic dynamics through which the Bible achieved iconic status in the first place, that is, the conditions in which significance was attached to its material, finite shape. For Ben Sira, this symbolism was deeply tied to his honor-shame ethos in which women posed a threat to the honor of his eternal name, a threat resolved through his possession of Torah figured as the Woman Wisdom. What my analysis suggests is that the conflicted perceptions of gender in Ben Sira’s text is fundamental to his appropriation of, and attempt to produce, authoritative religious literature, and thus essential for understanding his relationship to this emerging canon. Torah, conceived as female, was the core of this canon, but Ben Sira adds his own literary production to this female “body” (or feminized corpus, if you will), becoming the voice of both through the experience of perfect possession.

Mobile Money - A Catalyst for Financial Inclusion in Developing Economies: A Case Study of Zimbabwe using FinScope Survey Data

GIS Business ◽  
2016 ◽  
Vol 12 (4) ◽  
pp. 45-56
Author(s):  
Kingstone Mutsonziwa ◽  
Obert K. Maposa
Keyword(s):  
Rural Communities ◽  
Developing Economies ◽  
Adult Population ◽  
Financial System ◽  
Financial Inclusion ◽  
Viable Option ◽  
Mobile Money ◽  
Bank Branches ◽  
Financial Transactions

Mobile money in Zimbabwe has extensively extended the frontiers of financial inclusion to reach millions who were earlier excluded within a relatively short space of time. The growing use of mobile phones in transferring money and making payments has significantly altered the countrys financial inclusion landscape as millions who had been hitherto excluded can now perform financial transactions in a relatively cheap, reliable and secure way. The FinScope results found out that 45% of the adult population use mobile money services. Of those using mobile money, 65% mentioned that is convenient, while 36% mentioned that it is cheap. Mobile money is accessible. These drivers are in the backdrop of few or no bank branches in rural communities as well as time and cost of accessing the bank branches. In Zimbabwe, mobile money is mostly used as a vehicle for remittances. While some people are enjoying mobile money services, it is important to mention that there are still people who are excluded from the formal financial system. The reasons why people do not use mobile money are mainly related to poverty issues. Mobile money remains a viable option to push the landscape of financial inclusion in Zimbabwe and other emerging markets where the formal financial system might not be strong.

Sign in / Sign up

Export Citation Format

Share Document