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result(s) for
"Hromada, Martin"
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Tanopicobia gen. nov., a new genus of quill mites, its phylogenetic placement in the subfamily Picobiinae (Acariformes: Syringophilidae) and picobiine relationships with avian hosts
by
Skoracki, Maciej
,
Jerzak, Leszek
,
Sikora, Bozena
in
Animals
,
Biology and Life Sciences
,
Birds
2020
A new monotypic genus Tanopicobia gen. nov. is established for a new species Tanopicobia trachyphoni sp. nov., parasitizing Trachyphonus erythrocephalus Cabanis, 1878 (Piciformes: Lybiidae) from Tanzania. In phylogenetic analyses based on morphological data and constructed using the maximum parsimony approach, this taxon falls within the subfamily Picobiinae Johnston and Kethley, 1973 in the Neopicobia-species-group as closely related to the genus Pipicobia Glowska and Schmidt, 2014. Tanopicobia differs from Pipicobia by the following features in females: genital setae absent; setae ve are situated far and posteromedial to the level of setal bases vi; setae 3a are thick and knobbed. Additionally, a new generic key for subfamily Picobiinae is constructed and general host-parasite ecological and phylogenetic relationships are discussed. Picobiines are present in several lineages of neoavian birds, from basal Galloanseres to terminal Telluraves, which are infested by 70 (89.7% of all) species of these ectoparasites.
Journal Article
Evaluating a Proposed E-Government Stage Model in Terms of Personal Data Protection
2023
In today’s era, the e-government plays a significant role in providing better services to citizens. As a result, citizens are crucial in ensuring the success of the e-government and are involved in the government’s policies. Hence, the protection of personal information must be taken into consideration when designing any e-government model. Previous studies have shown that privacy and security are the main challenges in implementing an e-government in developing countries. This study aims to evaluate an e-government stage model that is proposed based on protecting personal information in developing countries. The methodology of this study uses SOAR (Strengths, Opportunities, Aspirations, and Results) analysis to evaluate the stages and combines it with the Analytic Hierarchy Process (AHP) to determine the feasibility of the model. The results of the study show that the model is acceptable and suitable for adoption. Therefore, the model is a viable option for implementing an e-government in developing countries.
Journal Article
Is the timing of menarche correlated with mortality and fertility rates?
2019
Timing of menarche has largely been studied in the context of a secular trend. However, since mortality and fertility rates are fundamental demographic factors linked to a population's developmental and reproductive characteristics, we expect that the timing of menarche, a precondition to reproduction, is also associated with these vital rates. We conduct an analysis of 89 countries and 21 demographic, socioeconomic, nutritional, and educational variables selected for their known influence on menarche. Model results predict that a country's fertility and adult female mortality rates are significant predictors of mean age at menarche, while other covariates are not. Specifically, menarche is delayed in countries with high mortality and high fertility, which may be proxies for assessing overall environmental quality. We emphasize that, for a comprehensive understanding of the timing of menarche, it is critical to take into account both individual- and population-level influences.
Journal Article
Resilience Assessment in Electricity Critical Infrastructure from the Point of View of Converged Security
by
Lukas, Ludek
,
Rehak, David
,
Hromada, Martin
in
converged security
,
critical infrastructure
,
Cybersecurity
2021
In terms of service provision, the electricity sector is the most important critical infrastructure sector, on the supply of which the vast majority of society and its basic vital functions depend. Extensive disruption of these supplies would have negative effects not only on basic human needs, but also on the economy and security of the state. For this reason, it is necessary to ensure permanent and comprehensive monitoring of the infrastructure elements resilience level, especially against threats with a multispectral impact on several areas of security. For this reason, the authors of the article developed the Converged Resilience Assessment (CRA) method, which enables advanced assessment of the electricity critical infrastructure elements resilience from the converged security point of view. Converged security in this case combines (converges) physical, cyber and operational security into a complementary unit. This reflects the integral determinants of resilience across related areas of security/safety. The CRA method focuses mainly on information and situation management, which integrates and correlates information (signals) from systems and sensors in order to obtain an overview of the situation and the subsequent effective management of its solution. The practical use of the proposed method is demonstrated on a selected element of the Czech Republic transmission system. The CRA method is currently embodied in a functional sample that has been piloted on several TSO elements. Further development of this method is seen mainly in fulfilling the logic of network infrastructure and reflection between elementary and intersectoral links in the context of synergistic and cascading effects in a broader context.
Journal Article
Strengthening Resilience in the Energy Critical Infrastructure: Methodological Overview
by
Hromada, Martin
,
Janeckova, Heidi
,
Rehak, David
in
Adaptability
,
approaches and methods
,
critical infrastructure
2022
As the number of threats and the severity of their impact increases, an ever greater emphasis is being placed on the protection of critical infrastructure. Thus, the issue of resilience, or its assessment and strengthening, is increasingly coming to the fore. The resilience assessment of critical infrastructure, especially in the energy sector, has received considerable attention due to the high level of interest in this issue. However, the issue of strengthening resilience poses a significant challenge not only in the energy sector but also in the entire critical infrastructure system. Despite the great importance of this area, there is not a large number of authors moving in this direction and paying attention to resilience-strengthening tools. For this reason, the aim of this article is to provide the reader with a comprehensive methodological overview of resilience strengthening in the critical energy infrastructure sector. This article also provides an overview of internal and external tools suitable for strengthening resilience and presents a possible procedure for their application to energy critical infrastructure elements.
Journal Article
Syringophilid Quill Mites Obey Harrison’s Rule
by
Rózsa, Lajos
,
Ianculescu, Mónika
,
Hromada, Martin
in
Allometry
,
Animal feathers
,
Binomial distribution
2024
Harrison’s Rule (HR) postulates a positive allometry between host and parasite body sizes. We tested HR for Syringophilid quill mites parasitizing birds. Using host body mass and parasite body length as size indices, this pattern was absent in the Syringophilidae family and the Syringophilinae subfamily as a whole. However, when considering the parasite genera as units of study, as proposed originally by Harrison, we found that host body mass positively correlates with both male and female parasite body length in seven genera (Aulobia, Aulonastus, Neoaulonastus, Picobia, Neopicobia, Syringophilopsis, and Torotrogla). Most of these relationships were non-significant. On the contrary, male and female Syringophiloidus mites exhibited negative relationships with host mass (both non-significant). This apparent contradiction disappeared when we applied wing length as an index of host body size. Since species of this genus are specific to the host flight feathers (secondaries and also primaries), wing length is a more meaningful index of host body size than body mass. Overall, most cases corresponded to the positive direction predicted by Harrison when examined on the genus level. This finding also implies a surprising reliability of the genus concept, at least in this group of ectoparasites.
Journal Article
Syringophilid mites parasitising the crows and the competitive exclusion principle
2025
Quill mites of the family Syringophilidae (Acariformes: Prostigmata) are one of the most species-rich groups of mite ectoparasites permanently associated with birds, characterised by high host specificity and strict microhabitat preferences. In this study, we examined 179 individuals representing 19 species of the genus
Corvus
(Passeriformes: Corvidae) to investigate the prevalence and host associations of syringophilid mites. Quill mites were detected in 31 hosts from 11 host species, with infestations restricted exclusively to the wing coverts and involving two species:
Syringophiloidus glandarii
and
Corvisyringophilus krummi
. These mites exhibited mutually exclusive host distributions, with the vast majority of corvid species infested by only one of the two mite species. The phylogenetic distribution of these mites across
Corvus
hosts, combined with their shared microhabitat and lack of co-occurrence, strongly supports historical interspecific competition and subsequent host specialisation, in accordance with the Competitive Exclusion Principle.
S. glandarii
appears to be the dominant lineage, infecting nine
Corvus
, while
C. krummi
was restricted to only three hosts. Only in
Corvus albicollis
were both mite species detected, though a limited sample size precludes definitive conclusions about stable co-occurrence. These findings highlight how ecological interactions, such as competition, can shape parasite distributions and drive specialisation, even among permanent and highly host-specific parasites. They provide insights into the factors governing host specificity and have implications for understanding ecological and evolutionary patterns in host-parasite systems.
Journal Article
Solving Power Outages in Healthcare Facilities: Algorithmisation and Assessment of Preparedness
by
Hromada, Martin
,
Dzermansky, Martin
,
Vichova, Katerina
in
Blackouts
,
Communication
,
Communications networks
2023
Power outages present a significant threat to all of humanity. However, elements of critical infrastructure are most affected by this event. Among other things, healthcare facilities can be considered critical infrastructure. They are the backbone for saving lives. However, even these medical facilities can be endangered. The primary aim of this paper is to design an algorithm to assess healthcare facilities to solve power outages. Several inputs are considered for the evaluation of healthcare facilities. Based on these inputs, we could gain several outputs, such as object priority, preparedness of the healthcare facility, missing aggregate capacity and fuel stocks. Calculations to obtain this information are available in this article. This algorithm follows up the methodology for the categorisation and prioritisation of objects necessary for the resumption of electricity supply after a blackout. We conclude that only 15% of the surveyed healthcare facilities are prepared for a power outage.
Journal Article
The emergence of tolerance of human disturbance in Neotropical birds
by
Hromada, Martin
,
Tryjanowski, Piotr
,
Kosicki, Jakub Z.
in
Animal behavior
,
Animal populations
,
Animals
2020
Animals living close to human settlements more often experience disturbance, but also reduced predation risk. Because an escape response is costly, behavioural adjustments of animals in terms of increased tolerance of humans occurs and is often reported in the literature. However, most such studies have been conducted in and around long-existing cities in Europe and North America, on well-established animal populations. Here, we investigate the degree of tolerance of human disturbance across 132 bird species occurring in disturbed (small farms) and undisturbed (intact wetlands and grasslands) areas in Pantanal, Mato Grosso (Brazil), a region with only a very recent history of human-induced disturbance. We found a clear across-species trend toward higher tolerance of human disturbance in birds near farms when compared with birds in wild areas. Such a flexible and perhaps also rapid emergence of tolerance when facing small-scale and very recent human disturbance presumably involves learning and might be attributed to behavioural plasticity. The ability of birds to modify their degree of tolerance of human disturbance may play a key role in the facilitation of wildlife–human coexistence.
Journal Article
Revealing the Complexity of Host-Parasite Relationships Between Syringophilid Mites and Sunbirds in Their Global Range
2025
This article emphasises the importance of parasitological research in understanding ecological dynamics and biodiversity conservation through a global analysis of quill mites (Syringophilidae) parasitising Sunbirds (Nectariniidae). Data from 764 Sunbird individuals across seventy-six species revealed twelve quill mite species, including three newly described species: Aulonastus aethopygus Sikora and Unsoeld sp. n., Syringophiloidus haeckeli Sikora and Unsoeld sp. n., and Aulonastus arachnotherus Sikora and Unsoeld sp. n. A bipartite network analysis indicated a low connectance of 0.10, suggesting that only 10% of potential bird–parasite connections are realised. This high specialisation is further supported by an H2′ index of 0.94 and a C score of 0.83, indicating low co-occurrence among mite species. The temperature of nestedness at 13.49 suggests a well-organised network structure. Additionally, normalised specialisation (d’) ranged from 0.60 to 1, reflecting unique host–parasite interactions. High modularity (likelihood = 0.80) with nine modules was identified, with hosts ranging from one to seven. The study concludes by discussing the host–parasite dynamics and their ecological implications within this system.
Journal Article