scholarly journals A Retrospective Assessment of Temperature Trends in Northern Europe Reveals a Deep Impact on the Life Cycle of Ixodes ricinus (Acari: Ixodidae)

Pathogens ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 345
Author(s):  
Agustin Estrada-Peña ◽  
Natalia Fernández-Ruiz
Keyword(s):  
Life Cycle ◽  
Ixodes Ricinus ◽  
Northern Europe ◽  
Target Area ◽  
Baltic Countries ◽  
Retrospective Assessment ◽  
Development Rates ◽  
Development Processes ◽  
Accumulated Temperature ◽  
Faster Development

This study modelled the changes in the development processes of the health-threatening tick Ixodes ricinus in Northern Europe as driven by the trends of temperature (1950–2018). We used the ECA&D dataset to calculate the annual accumulated temperature to obtain the development rates of the oviposition, incubation, larva–nymph, and nymph–adult molts. Annual values were used to ascertain the trend in development rates of each stage. The ecological classification of Northern Europe (LANMAP2) was used to summarize results. The temperature in 1950–2018 clearly increased in the target territory. The development rates of every tested life cycle process were faster along the time series. Faster oviposition and incubation rates resulted in central Sweden, Baltic countries, and parts of Finland. Faster molting rates were observed in the same territories and in large areas of Western Norway. The trend of temperature in the period 1950–2018 shows a consistent inflection point around 1990, demonstrating that the increased annual accumulated temperature has a deeper impact on the life cycle of I. ricinus since approximately 1990. Faster development rates could be part of the processes driving the reported spread of the tick in the target area and should be considered as a serious threat to human health.

scholarly journals A retrospective assessment of temperature trends in northern Europe reveals a deep impact on the life cycle of Ixodes ricinus (Acarina: Ixodidae)

2018 ◽  
Author(s):  
Agustin Estrada-Peña
Keyword(s):  
Time Series ◽  
Life Cycle ◽  
Northern Europe ◽  
Target Area ◽  
Deep Impact ◽  
Baltic Countries ◽  
Retrospective Assessment ◽  
Alpine Regions ◽  
Development Rates ◽  
Accumulated Temperature

1. AbstractThis study modelled the changes in the development processes of the health-threatening tick Ixodes acinus in northern Europe as driven by the trends of temperature (1950-2016). I used the ECA&D dataset of temperature interpolated at a resolution of 0.25o as the base data for further calculations, which were based on a previously developed process-driven model of the tick. I used the annual accumulated temperature in the period 1950-2016 to obtain the development rates of the oviposition, incubation, larva-nymph, and nymph-adult molts. Annual values were used to ascertain the trend in development rates of each stage. The ecological division of northern Europe (LANMAP2) was used to summarize results along large regions. The temperature in the years 1950-2016 clearly increased in every area of the target territory. The largest increase was observed for a wide territory eastern to Baltic countries, north-eastern Sweden and northern Finland. The development rates of every tested life cycle process had a trend to being faster throughout the time series. Moderate to high increase of the oviposition rates (70%-100% faster) resulted in central Sweden, Baltic countries, parts of Finland, and adjacent territories of Russia. Faster (70%-90%) incubation and molting rates were consistently observed in the same territories and also in large areas of western Norway. The trend of temperature in the period 1950-2016 shows a consistent inflection point around the year 1990, when the slope of the time series of temperature drastically rose. A comparison between 1950-1990 and 1991-2016 demonstrated that annual accumulated temperature was 86% and 26% higher in the Alpine regions, 7%-8% in the Atlantic and 157%, 10% and 16% in Boreal, Continental, and Nemoral regions, respectively. It is concluded that (i) accumulated annual temperature is clearly increasing in the studied territory, (ii) changes were larger since approximately the year 1990, and (iii) these changes have a deep impact on the life cycle of the tick I. ricinus. Faster development rates could be part of the processes driving the reported spread of the tick in the target area and should be considered as a serious thread to human health.

A Systematic Review and Catalog of Security Metric during the Secure Software Development Life Cycle

2020 ◽  
Vol 13 ◽  
Author(s):  
Sampada G.C ◽  
Tende Ivo Sake ◽  
Amrita
Keyword(s):  
Systematic Review ◽  
Life Cycle ◽  
Software Development ◽  
Software Security ◽  
Security Assessment ◽  
Security Metrics ◽  
Development Life Cycle ◽  
Development Processes ◽  
Secure Software Development ◽  
Software Development Life Cycle

Background: With the advancement in the field of software development, software poses threats and risks to customers’ data and privacy. Most of these threats are persistent because security is mostly considered as a feature or a non-functional requirement, not taken into account during the software development life cycle (SDLC). Introduction: In order to evaluate the security performance of a software system, it is necessary to integrate the security metrics during the SDLC. The appropriate security metrics adopted for each phase of SDLC aids in defining the security goals and objectives of the software as well as quantify the security in the software. Methods: This paper presents systematic review and catalog of security metrics that can be adopted during the distinguishable phases of SDLC, security metrics for vulnerability and risk assessment reported in the literature for secure development of software. The practices of these metrics enable software security experts to improve the security characteristics of the software being developed. The critical analysis of security metrics of each phase and their comparison are also discussed. Results: Security metrics obtained during the development processes help to improve the confidentiality, integrity, and availability of software. Hence, it is imperative to consider security during the development of the software, which can be done with the use of software security metrics. Conclusion: This paper reviews the various security metrics that are meditated in the copious phases during the progression of the SDLC in order to provide researchers and practitioners with substantial knowledge for adaptation and further security assessment.

scholarly journals Caterpillars of the marsh fritillary butterfly Euphydryas aurinia can extend their life-cycle in Scotland

2021 ◽  
Author(s):  
Neil O. M. Ravenscroft
Keyword(s):  
Life Cycle ◽  
Conservation Status ◽  
Northern Europe ◽  
First Year ◽  
Winter Mortality ◽  
Closely Related Species ◽  
Euphydryas Aurinia ◽  
High Conservation ◽  
The Uk ◽  
Marsh Fritillary

AbstractThe marsh fritillary Euphydryas aurinia is declining across Europe and is of high conservation interest. Its ecology has been defined and its conservation status assessed primarily from the affinities and populations of young caterpillars in the autumn, before hibernation and high winter mortality. The possibility that caterpillars of E. aurinia can overwinter more than once was investigated on the Isle of Islay, Scotland after caterpillars were found to occur at some locations in the spring despite a pre-hibernation absence. Closely-related species in North America and Northern Europe can prolong larval development by diapausing for a year as does E. aurinia in Scandinavia. Measurements of development and manipulations of distribution confirmed that some caterpillars do extend the life-cycle in Scotland and may occur in areas devoid of larvae in their first year. Caterpillars attempting this life-cycle develop slowly in spring, attain the normal penultimate spring instar and then enter diapause while other caterpillars are pupating. They moult just before diapause, construct highly cryptic webs and on emergence the following spring are 5–6 times heavier than larvae emerging in their first spring, or the equivalent of a month or so ahead. They attain a final, extra instar as larvae in their first spring reach the penultimate instar. Knowledge of this life-cycle is confined in the UK to Islay but its occurrence in this mild climate implies that it is more widespread.Implications for insect conservation Conditions that permit long diapause are probably precise and may not be reflected in recognised qualities of habitat. The species may also be present despite a perceived absence in autumn, the standard period for monitoring. Assessments of the prevalence of the life-cycle and its contribution to the persistence of E. aurinia are required. Populations of E. aurinia are known to fluctuate greatly and do occur below the observation threshold for long periods.

Chrysomyxa abietis (needle rust of fir).

2021 ◽  
Author(s):  
Keyword(s):  
Life Cycle ◽  
New Zealand ◽  
North America ◽  
Rust Fungus ◽  
Significant Problem ◽  
Northern Europe ◽  
Native Range ◽  
Obligate Parasite ◽  
The Usa ◽  
Accidental Introduction

Abstract C. abietis is a microcyclic rust fungus; an obligate parasite completing its life cycle on species of Picea (spruce). Only the current year's needles of Picea are infected and those needles are shed early. Reported from northern Europe and Asia, the fungus is a Regulated Pest for the USA. It is absent from North America, where susceptible species are native, and Australia and New Zealand, where they are introduced. Although usually not a significant problem in its native range, because conditions are not favourable for heavy infections every year (Smith et al., 1988; Hansen, 1997), this rust could be more damaging as an invasive in other temperate areas. Due to the fact that small amounts of infection may be overlooked, accidental introduction could occur through importation of infected seedlings or young trees.

scholarly journals Virtual Optimization of Machine Tools and Production Processes

2007 ◽  
Vol 1 (2) ◽  
pp. 136-140 ◽  
Author(s):  
Jochen Bretschneider ◽  
◽  
Thomas Menzel
Keyword(s):  
Life Cycle ◽  
Machine Tools ◽  
Cost Effective ◽  
Processing Times ◽  
Virtual Production ◽  
Machine Productivity ◽  
Increase Productivity ◽  
Market Leadership ◽  
Faster Development

Faster development of innovative machine tools, shorter processing times, improved surface quality of workpieces, higher machine productivity – these are just a few of the wishes and demands of machine manufacturers and end-users. Time-to-market is decisive; in some industries, six months too late on the market can already be decisive in losing the race for market leadership. The key to success lies in virtual techniques. These are an extremely cost-effective way to increase productivity in all phases of the machine tools life cycle. Siemens AG, the leading provider for control and drive technology, sees itself as a partner for the whole machine tool industry and offers four phases of simulation support which cover the entire life cycle of a machine: Mechatronic Support for simulation for machine development, Machine Simulator for supporting commissioning, Virtual Production for the optimization of production and, finally, Virtual NC Kernel (VNCK) for the testing of NC part programs at the end-user.

ECSE

2014 ◽  
pp. 296-309 ◽  
Author(s):  
Sakgasit Ramingwong ◽  
Lachana Ramingwong
Keyword(s):  
Life Cycle ◽  
Software Development ◽  
Engineering Students ◽  
Major Influence ◽  
Engineering Construction ◽  
Software Products ◽  
Development Life Cycle ◽  
Critical Issues ◽  
Development Processes ◽  
Software Development Life Cycle

Software development is uniquely different especially when compared to other engineering processes. The abstractness of software products has a major influence on the entire software development life cycle, which results in a number of uniquely important challenges. This chapter describes and discusses Engineering Construction for Software Engineers (ECSE), an effective workshop that helps software engineering students to understand some of these critical issues within a short period of time. In this workshop, the students are required to develop a pseudo-software product from scratch. They could learn about unique characteristics and risks of software development life cycle as well as other distinctive phenomenon through the activities. The workshop can still be easily followed by students who are not familiar with certain software development processes such as coding or testing.

Model-Based Development Process of Cybertronic Products and Production Systems

2014 ◽  
Vol 1018 ◽  
pp. 539-546 ◽  
Author(s):  
Hermann Meissner ◽  
Marcel Cadet ◽  
Nicole Stephan ◽  
Christian Bohr
Keyword(s):  
Development Process ◽  
Production Systems ◽  
Product Lifecycle Management ◽  
Mechatronic Systems ◽  
New Approach ◽  
Model Based ◽  
Open Networks ◽  
Development Processes ◽  
Faster Development ◽  
Lifecycle Management

The shift to satisfied customer markets forces manufacturers to offer customised products. Moreover, product lifecycles are shortened, which requires a faster development of products and corresponding production systems. Both challenges amplify complexity in production. This complexity is usually confronted with flexibility. A new approach offering decentralised structures, and thereby flexibility, comes from cybertronic systems (CTS), which are further developed mechatronic systems with the capability to communicate through open networks with other such mechatronic systems. Up to now no integrated development process to engineer cybertronic products (CTP) and production systems (CTPS) has been developed, although such a process is essential to use their beneficial properties for today’s market conditions. Therefore, research is conducted in the research project mecPro². First, the properties of cybertronic systems are investigated and dissociated from those of mechatronic systems. Based on these properties, the connections of CTP and CTPS are analysed and a systematics for description for both is identified. With this the model-based development processes of CTP and CTPS can be further defined as well as their intersections and afterwards implemented in a data model. Finally, the development process is summarised in a product lifecycle management software to support the development process.

scholarly journals Opportunities for Slow Tourism in Madeira

2019 ◽  
Vol 11 (17) ◽  
pp. 4534 ◽  
Author(s):  
Josep-Francesc Valls ◽  
Luís Mota ◽  
Sara Cristina Freitas Vieira ◽  
Rossana Santos
Keyword(s):  
Sustainable Development ◽  
Life Cycle ◽  
Public Sector ◽  
Tourism Development ◽  
Local Environment ◽  
Development Model ◽  
Excessive Pressure ◽  
Significant Alignment ◽  
Advanced Phase ◽  
Development Processes

The slow tourism movement is gaining popularity as more destinations focus on the local environment and heritage experience. The approach to slow tourism usually occurs either when traditional destinations exhaust their life cycle with an evident reduction in sustainability, or when newly emerging destinations decide to develop in this way. The case of Madeira is different; the island has several decades of tourism development without excessive pressure or overcrowding, and in planning for the future it wants to sustain these conditions. Seeking to understand Madeira’s perception of the development model, we surveyed entrepreneurs in Madeira’s lodging, restaurant and bar, shopping, transportation, intermediation, and tourist activity industries, as well as its public sector. Even without having encountered the popularized the ideas of slow tourism, Madeira’s tourism entrepreneurs show significant alignment with the values of quieter tourism. In contrast to its mature counterparts (i.e., Europe’s other popular sun and beach destinations), for Madeira it is not a question of destroying or rehabilitating, but rather of continuing sustainable development processes. Our results suggest that although slow tourism is typically a reaction to a very advanced phase of the life cycle, it can be the result of an endogenous impulse, as is true for Madeira.

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