Measuring the host specificity of plant-feeding mites based on field data — a case study of the Aceria species

Biologia ◽  
2012 ◽  
Vol 67 (3) ◽  
Author(s):  
Anna Skoracka ◽  
Lechosław Kuczyński

AbstractFor the majority of eriophyoid species, host ranges have been established purely on the basis of collection records, usually without quantitative data. The aim of this study was to: (1) quantitatively examine published literature to explore whether relevant analyses of field-collected quantitative data were used to assess host specificity of herbivores; (2) propose a protocol for data analysis that could be applied to plant-feeding mites; (3) analyse host specificity of the grass-feeding Aceria species as a case study. Field data were collected in Central and Northern Europe over a period of 11 years, and included 73 grass species. For the eight Aceria species found, infestation parameters and host specificity indexes were assessed. Accumulation curves were calculated to study how the sampling effort influenced estimates of host specificity indexes. A literature analysis showed that among the studies that declared an aim of estimating the host range only 56% of them applied any quantitative analysis or informed on estimation reliability. The analysis of field-collected data and its interpretation showed the most complete and reliable conclusions about the host specificity of Aceria species when all indices were considered and, if available, other information about the mite’s ecology and biology. It was shown that estimates of host specificity could be strongly affected by sampling effort, and that several hundreds of samples should be collected for measuring the host specificity of grass-infesting mites, at least. Recommendations regarding host specificity estimation on the basis of field data are given.

1998 ◽  
Vol 37 (1) ◽  
pp. 155-162
Author(s):  
Flemming Schlütter ◽  
Kjeld Schaarup-Jensen

Increased knowledge of the processes which govern the transport of solids in sewers is necessary in order to develop more reliable and applicable sediment transport models for sewer systems. Proper validation of these are essential. For that purpose thorough field measurements are imperative. This paper renders initial results obtained in an ongoing case study of a Danish combined sewer system in Frejlev, a small town southwest of Aalborg, Denmark. Field data are presented concerning estimation of the sediment transport during dry weather. Finally, considerations on how to approach numerical modelling is made based on numerical simulations using MOUSE TRAP (DHI 1993).


Author(s):  
Dr. Navyashree KL ◽  
Dr. Manjunatha Adiga

Background: New world syndrome like obesity is one of the world’s oldest metabolic disorders is heading for the rocks with various reasons like urbanization and modernization. Though obesity and over weight is not affecting much to a person for daily living, the complication of which has become burning issue in the society. Aim and Objective: To assess the efficacy of Shamanoushadi along with Pathya Ahara Vihara. Methods: Guduchi Bhadraadi Kashaya, Hareetaki Churna and Pathya Ahara Vihara. Results: Management of Sthoulya with Pathya Ahara Vihara along with Shamanoushadi was effective in all qualitative and quantitative data. Discussion: The drug possessing Rooksha Guna, Kaphahara property counteracts Sthoulya. Conclusion: Our classics with variety of treatment to individual disease suggest the stages or condition that disease can cross over


2018 ◽  
Vol 34 (2) ◽  
pp. 117-136 ◽  
Author(s):  
A. Miller

Purpose The purpose of this paper is to offer and explore innovative strategies for building and sustaining digital initiatives at information organizations. Although the examples provided are based on case studies at an academic library, the practices are rooted in project management principles and therefore applicable to all library types, museums, archives and other information organizations. The innovative strategies on staffing and funding will be particularly useful to organizations faced with monetary and staffing shortages and highlights collaborative management practices. Design/methodology/approach Concept of strategic and collaborative management practices led by an experienced project manager cross-trained in management, technical and soft skills enables the successful development and sustainability of digital initiatives. A cross-trained librarian’s management practices of leading the Digital Scholarship Initiatives at a particular university will be examined as a case study and aided with literature supporting the need for digital initiatives leaders to have training beyond the credentials of librarian, curator, archivist or historian in the technologically savvy twenty-first century ecology of information centers. Findings The innovative strategies implemented in the case study yielded increases in the number of hours of digital lab usage, digital projects developed, seminars or workshops presented, attendance of library hosted events, number of programs implemented and awareness on campus, all with limited staff and funding. The variety and level of production and marketing is instrumental to the growth and sustainability of digital initiatives. Practical implications The innovative strategies emphasized in this paper use the concept of borrowed or shared time to start staffing needs and is particularly helpful to organizations that do not have a strong line of dedicated staffing or funding to begin building digital initiatives. Offers small ways to start immediately while setting the stage to plan for big ideas for the future. Originality/value This paper suggests a credentialed information expert, such as a librarian, archivist or curator, that is, also cross-trained in project management and technology is the key to not only successfully leading digital initiatives but is instrumental for its sustainability and the marketing, growth and future of digital initiatives.


Author(s):  
Michael Stubbs

Abstract In an influential book on literary linguistics, first published in 1981 and revised in 2007, Geoffrey Leech and his colleague Mick Short discuss linguistic methods of analysing long texts of prose fiction. This article develops their arguments in two ways: (1) by relating them to classic puzzles in the philosophy of science; and (2) by illustrating them with a computer-assisted study of Bram Stoker’s 1897 novel Dracula. This case study shows that software can identify a linguistic feature of the novel which is central to its major themes, but which is unlikely to be consciously noticed by human readers. Quantitative data on the novel show that it contains a large number of negatives. Their function is often to deny something which would normally be expected, and therefore to express the protagonists’ distrust of their own senses in the extraordinary world in which they find themselves.


2021 ◽  
Vol 64 (2) ◽  
pp. 3-8
Author(s):  
Beata Stasiak-Cieślak ◽  
Piotr Malawko ◽  
Tomasz Szczepański ◽  
Piotr Kosmowski

The article presents the characteristics of a case study - stroke survivors with unilateral neglect syndrome, mechanisms used in re-education training and elements of functional rehabilitation. The focus was on an important diagnostic problem in the field of occupational medicine and the return to driving for people after stroke. The aim of the research work undertaken was to justify the experimental description of the driver after a stroke and to confirm the possibility of returning to driving, including compulsory re-education. Literature analysis, review of legal acts, characteristics of adaptation devices and conclusions from the case study were also carried out.


2017 ◽  
Vol 9 (1) ◽  
pp. 36-42
Author(s):  
Xinnan Shi

Why would communications scholars want to present their positionality to the public? This was the first question I asked myself when I came across the term "positionality". Throughout my studies, I have approached communication as social science, and I have thought about communications researchers as scientists. I certainly understand that the objects of research in social science are social phenomena such as social relations and institutions, and that these are difficult to explain with quantitative data most of the time. But for me, being a scientist means holding back personal emotions and being objective in the production of knowledge about society. I believe that even a single case study should offer explanations not just of its immediate context, but also of broader social problems or phenomena.


Revista Trace ◽  
2018 ◽  
pp. 111
Author(s):  
Cristina Amescua Chávez

En este artículo se analizará el tema de la violencia como causa y consecuencia del secuestro virtual buscando integrar sus dimensiones tanto individuales o personales, como familiares y colectivas. Desde una perspectiva social se dará cuenta de las diversas interacciones entre los factores que se entrelazan en este nuevo fenómeno. La violencia será entendida aquí como un ciclo continuo que se reproduce a sí mismo en forma de espiral. Para el análisis se utilizarán datos cuantitativos recabados tanto en instancias gubernamentales como a través de organismos de la sociedad civil, así como información cualitativa proporcionada por un estudio de caso de un secuestro virtual.Abstract: This article analyzes violence both as a cause and as a consequence of virtual kidnapping seeking to integrate individual and collective dimensions. From a social perspective, visibility will be given to the several interactions present in this new phenomenon. Violence will be understood as a continuous cycle reproducing itself constantly but in a spiral form. The analysis will draw from quantitative data collected among official sources as well as non governmental organizations, but it will also include a qualitative perspective build a case study of a specific virtual kidnapping.Résumé : Cet article analyse la violence comme cause et effet du kidnapping virtuel, en prenant en compte ses dimensions individuelles et collectives. Dans une perspective sociale, nous examinons les diverses interactions et facteurs en jeu dans ce nouveau phénomène. La violence est ici comprise comme un cycle continu qui se reproduit luimême sous la forme d’une spirale ascendante. L’analyse part de données quantitatives provenant aussi bien d’institutions gouvernementales que d’organismes de la société civile, ainsi que de données qualitatives fournies par une étude de cas d’un kidnapping virtuel.


2021 ◽  
Vol 905 (1) ◽  
pp. 012083
Author(s):  
D T Ardianto ◽  
S Mataram

Abstract The Javanese tradition is manifested in various forms, one of which is Merti Desa Tambakbayan tradition in Tambakboyo Village, Tawangsari District, Sukoharjo Regency. This annual tradition is a cultural heritage that help to maintain environmental balance. This study seeks to describe the philanthropic and ecological values of Merti Desa Tambakbayan tradition. This research was a case study with traditional event as the object. The data sources were the Merti Desa Tambakbayan events, documents, and interview results with informants. The obtained field data showed the existence of philanthropic and ecological values in Tambakboyo community. These values can be seen from the traditions of having feast and exchanging meals together, and joint activities to clean up the environment around the village regardless of social status. These attitudes are essentials, especially when some members of the society are experiencing economic difficulties due to the ongoing Covid-19 pandemic.


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