scholarly journals Evaluating Presence Data versus Expert Opinions to Assess Occurrence, Habitat Preferences and Landscape Permeability: A Case Study of Butterflies

Environments ◽  
2018 ◽  
Vol 5 (3) ◽  
pp. 36 ◽  
Author(s):  
Muhammad Arfan ◽  
Guy Pe’er ◽  
Bianca Bauch ◽  
Josef Settele ◽  
Klaus Henle ◽  
...  
Keyword(s):  
Habitat Preferences ◽  
Landscape Permeability ◽  
Expert Opinions ◽  
Presence Data

Design of experimental food patches to measure foraging intensity for octopus: a case study with the giant Pacific octopus Enteroctopus dofleini

2020 ◽  
Author(s):  
Stephanie Chancellor ◽  
David Scheel ◽  
Joel S Brown
Keyword(s):  
Predation Risk ◽  
Foraging Behaviour ◽  
Habitat Preferences ◽  
High Tide ◽  
Intertidal Habitat ◽  
Camera System ◽  
Subtidal Habitat ◽  
Enteroctopus Dofleini ◽  
Nontarget Species

ABSTRACT In a study of the foraging behaviour of the giant Pacific octopus Enteroctopus dofleini, we designed two types of experimental food patches to measure habitat preferences and perceptions of predation risk. The first patch successfully measured giving-up densities (GUDs), confirmed by octopus prey presence and higher foraging at sites with historically greater octopus presence. However, nontarget foragers also foraged on these experimental food patches. Our second floating patch design successfully excluded nontarget species from subtidal patches, and from intertidal patches at high tide, but allowed for foraging by E. dofleini. The second design successfully measured GUDs and suggested that octopus preferred foraging in a subtidal habitat compared to an intertidal habitat. We ascribe the higher GUD in the intertidal habitat to its higher predation risk relative to the subtidal habitat. The second patch design seems well suited for E. dofleini and, in conjunction with a camera system, could be used to provide behavioural indicators of the octopus's abundance, perceptions of habitat quality and predation risk.

scholarly journals Opinions of Primary School Teachers about Mathematics Teaching During the Covid-19 Pandemic Period

2021 ◽  
Author(s):  
Esma Kilinc ◽  
Sumeyra Akkaya ◽  
Metin Kapidere
Keyword(s):  
Distance Education ◽  
Primary School ◽  
Structured Interview ◽  
School Teachers ◽  
Primary School Teachers ◽  
Face To Face ◽  
Expert Opinions ◽  
Teaching Of Mathematics ◽  
Education Process

This study was conducted to reveal the aspect of distance education studies on teaching of mathematics with the evaluation by class teachers during the Covid-19 Pandemic period. 24 primary school teachers from Onikisubat district of Kahramanmaras province have participated in the research. The semi-structured interview form developed in line with the expert opinions was applied to the primary school teachers separately. This study was required in order to evaluate the events experienced in the distance education process due to the coronavirus pandemic and the effects of the pandemic on the field of education in the direction of the opinions of the class teachers. Qualitative research was carried out to interpret any situation from a different perspective in the study, and a case study has been conducted to reach the depth of the situation. As a data collection tool, a semi-structured interview form was prepared with the approval of expert opinions. After the data were brought together, content analysis was carried out by giving similar descriptions and describing them in a way that the reader could comprehend. The sample of the study consisted of teachers who personally experienced the process in the nearby environment, which consists of easily accessible situation sampling in order to accelerate the study. It is thought that it will be important to work properly execution of the processes that may occur in such times by determining the causes and consequences of the situations experienced in the field of education due to reasons such as the suspension of face-to-face education and the cessation of schools after the pandemic in the world. As a result of the research, suggestions will be made for the studies that can be done about teaching mathematics in distance education.

scholarly journals Rockburst hazard assessment based on seismic tomography and analytical modelling - a case study

2018 ◽  
Vol 66 ◽  
pp. 01009
Author(s):  
Dariusz Chlebowski ◽  
Zbigniew Burtan
Keyword(s):  
Hazard Assessment ◽  
Seismic Tomography ◽  
Vertical Component ◽  
Rockburst Hazard ◽  
Expert Opinions ◽  
Deformable Media ◽  
Coal Deposits ◽  
Threat Level ◽  
Survey Results

In accordance with the formal regulations currently in force in Poland, the criteria for rockburst hazard assessment with respect to coal deposits include the records of seismic events and their impacts, de-stressing of the entire seam or its parts and expert opinions of mine operation engineers. Effectiveness of the de-stressing can be verified by geophysical test data whilst the expert opinions are mostly based on mathematical modelling using specialist software or dedicated simulation algorithms. This study collates and synthesises the results of tests carried out in a seam section in a colliery within the Upper Silesia Coal Basin, obtained by the outlined methods. Geophysical survey results are interpreted basing on seismic tomography procedures utilising the geo-tomography techniques for velocity field reconstruction in data processing. For comparison, the stress state modelling data are provided, based on conventional engineering solutions applicable to mechanics of deformable media. The actual assessment of the rockburst threat level is based on observations of distributions of the longitudinal wave velocity in relation to the actual value of the vertical component of stress concentration within the coal seam.

Are polymorphic species of Uropodina (Acari: Mesostigmata) more successful evolutionarily?—A case study of closely related species from the genus Oodinychus Berlese, 1917 based on DNA sequences

2019 ◽  
Vol 24 (5) ◽  
pp. 866
Author(s):  
Jerzy Błoszyk ◽  
Katarzyna Buczkowska ◽  
Anna Maria Bobowicz ◽  
Alina Bączkiewicz ◽  
Zbigniew Adamski ◽  
...  
Keyword(s):  
Dna Sequences ◽  
Related Species ◽  
Habitat Preferences ◽  
Abundant Species ◽  
Systematic Position ◽  
Genetic Differences ◽  
Similar Species ◽  
Closely Related Species ◽  
Wide Range

The study presented in this research paper is the first taxonomic investigation focusing on Uropodina (Acari: Mesostigmata) mites with a brief discussion of the genetic differences of two very closely related species from the genus Oodinychus Berlese, 1917, i.e. O. ovalis (C.L. Koch, 1839) and O. karawaiewi (Berlese, 1903). These two morphologically similar species are quite common and they have a wide range of occurrence in Europe. They also live in almost the same types of habitat. However, O. ovalis usually exhibits higher abundance and frequency of occurrence. The major aim of the study was to carry out a comparative analysis of the systematic position, morphological and biological differences, as well as habitat preferences and distribution of O. ovalis and O. karawaiewi. The next aim was to ascertain whether the differences in number and frequency of these species may stem from the genetic differences at the molecular level (16S rDNA and COI). The study shows that O. ovalis, which is a more abundant species than O. karawaiewi, turned out to be genetically more polymorphic.

scholarly journals The importance of non-forest tree stand features for protection of the Syrian Woodpecker Dendrocopos syriacus in agricultural landscape: a case study from South-Eastern Poland

2020 ◽  
Vol 94 (5) ◽  
pp. 1825-1835
Author(s):  
Jerzy Michalczuk
Keyword(s):  
Species Diversity ◽  
Agricultural Landscape ◽  
Habitat Preferences ◽  
Fruit Trees ◽  
Forest Tree ◽  
Health Condition ◽  
Agricultural Landscapes ◽  
South Eastern ◽  
Dendrocopos Syriacus

Abstract Non-forest tree stands are important habitats for many species of birds in the agricultural landscape. They are also the main habitat of the Syrian Woodpecker Dendrocopos syriacus, whose numbers have been decreasing in recent years in some parts of Europe. Recognition of the habitat requirements of this species may help better planning of its protection in the context of the treed agricultural landscapes. During this study, the habitat preferences of the Syrian Woodpecker were determined in the agricultural landscape of South-Eastern Poland. A set of 12 habitat parameters of tree stands located in the breeding territories of the Syrian Woodpecker (n = 122) and in randomly chosen control areas (n = 122) located outside the range of the breeding territories of this species were characterized. The number and species diversity of trees was significantly higher in stands located in Syrian Woodpecker territories than in the random control areas. Stands occupied by breeding pairs also had trees of worse health condition and a larger proportion of fruit trees. The model best explaining the probability of the occurrence of the species indicates that the Syrian Woodpecker requires mainly the presence of tree stands with a greater species diversity of trees, as well as tree stands in worse health condition. When planning the protection of this species’ habitats in the agricultural landscape, the characteristics of non-forest tree stands noted above should be taken into account.

scholarly journals Is there a need for accepting paraphyletic taxa? A case study in the Sardinian endemic Cymbalaria muelleri (Plantaginaceae)

2019 ◽  
Vol 191 (3) ◽  
pp. 325-338 ◽  
Author(s):  
Pau Carnicero ◽  
Peter Schönswetter ◽  
Núria Garcia-Jacas ◽  
Mercè Galbany-Casals
Keyword(s):  
Genome Size ◽  
Phylogenetic Trees ◽  
Fragment Length Polymorphism ◽  
Habitat Preferences ◽  
Molecular Data ◽  
Disjunct Distribution ◽  
Morphological Differences ◽  
A New Species ◽  
The Mediterranean Basin

Abstract Evolution does not always result in dichotomous phylogenetic trees. For instance, in anacladogenetic speciation, where a new species originates by budding, the ancestral taxon is often initially paraphyletic. Here we study Cymbalaria muelleri (Plantaginaceae), a chasmophytic species endemic to Sardinia, a major island in the Mediterranean Basin. Its distribution range is divided into two well-delimited geographical groups with some morphological differences. Using a combination of morphology, molecular data (amplified fragment length polymorphism fingerprinting) and relative genome size, we found that the two geographical groups should be considered two separate taxa, which split through anacladogenesis. Accordingly, we formally describe the new paraphyletic subspecies C. muelleri subsp. villosa as the ancestor, from which C. muelleri subsp. muelleri originated by budding. Morphological analyses support the differentiation of the two subspecies, and there are strong diagnostic characters to differentiate them. In addition to morphology and genetics, slightly divergent habitat preferences and the disjunct distribution of the two subspecies also support the recognition of two taxa. Genome size data obtained for the two subspecies are consistent with the previously established hexaploidy of C. muelleri.

A Case Study in Forensics, Macroergonomics, and Work-Related Musculoskeletal Injuries in Call Center Work

2005 ◽  
Vol 49 (9) ◽  
pp. 854-857 ◽  
Author(s):  
Joseph Cohen ◽  
H. Harvey Cohen
Keyword(s):  
Call Center ◽  
Musculoskeletal Injuries ◽  
Organizational Stress ◽  
Stress Factors ◽  
Acute Injury ◽  
Work Related ◽  
Expert Opinions ◽  
Workstation Design ◽  
Female Call

This case study describes a personal injury case and expert opinions expressed by a HF/E expert concerning work-related musculoskeletal injuries sustained by a 43 year-old female call center service representative. The circumstances surrounding this case are unusual as it involves a suit brought against an employer by an employee in the State of California, a physically adequate workstation design, and a cumulative rather than acute injury. The HE/E expert examined the deposition testimony, interview data and reviewed the literature as part of his analysis and concluded that the scientific literature establishes a link between the known organizational stress factors existing at the defendant's workplace and symptoms of work-related musculoskeletal disorders. Furthermore, the defendant's ergonomics safety program was deficient in proactively dealing with the plaintiff's injuries. The HF/E expert's analysis and testimony ultimately proved important in establishing liability on the part of the defendant.

scholarly journals The utility of repeated presence data as a surrogate for counts: a case study using butterflies

2013 ◽  
Vol 18 (1) ◽  
pp. 13-27 ◽  
Author(s):  
Kayce L. Casner ◽  
Matthew L. Forister ◽  
Karthik Ram ◽  
Arthur M. Shapiro
Keyword(s):  
Presence Data

Case Study of the Bird's Nest: Risks and Opportunities in China's PPP Implementations in Major Sports Facilities

2011 ◽  
Vol 243-249 ◽  
pp. 6332-6338 ◽  
Author(s):  
Wei Liang ◽  
Xin Yi Song ◽  
Shou Qing Wang
Keyword(s):  
Sports Facilities ◽  
Infrastructure Development ◽  
Government Behavior ◽  
Sport Event ◽  
Expert Opinions ◽  
Successful Case ◽  
Increasing Demand ◽  
National Stadium ◽  
Procurement Method

Although the infrastructure development projects under PPP operation which can fill the funding gap as a result of increasing demand for infrastructure development and reduced public sector funding capacity have been practiced since the late 80s, the $560 million Bird’s Nest (National Stadium) is the first stadium project in China using this procurement method. This project is generally considered as a successful case by most of the practioners and experts despite the operation right transfer occurred in 2009. Compared to the use of PPP in other field such as transportation, power generation and waste management, development of sports facilities for mega sport event with this model has its own unique features, risks and opportunities. This research identifies and analyzes the risks and opportunities through case study of the Bird’s Nest project. A survey and several interviews are conducted to solicit expert opinions from experienced practitioners and experts. According to the analysis, government behavior related risks and project level risks are found to be two groups of risks which are quite different for major sports facilities projects and general PPP projects.

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