Search results for "SSH"

The Interplay between Child Maltreatment and Stressful Life Events during Adulthood and Cardiovascular Problems—A Representative Study

2021

Psychological stress is a major risk factor for cardiovascular diseases. While the relevance of early life stress, such as that which is due to child maltreatment (CM), is well known to impact individual stress responses in the long-term, and data on the interplay between CM and stressful events in adulthood on cardiovascular health are sparse. Here, we aimed to assess how stressful life events in adulthood are associated with cardiovascular health infarction in later life and whether this association is independent of CM. In a cross-sectional design, a probability sample of the German population above the age of 14 was drawn using different sampling steps. The final sample included 2510 pe…

AN OPTIMIZATION MODEL FOR DAILY MANPOWER ALLOCATION IN TRANSSHIPMENT CONTAINER TERMINALS

2011

This work is motivated by the manpower allocation problem arising at the Cagliari International Terminal Container. Generally speaking, human resources allocation plays a key role in terminals with high labor costs, in order to achieve high levels of productivity and quality services for customers. As a result, terminal containers exhibit a growing interest in advanced decision support systems, in which optimization methods play a crucial role. In this talk we present an optimization model for manpower allocation in transshipment container terminals. The objective is to determine the optimal daily allocation of crane operators and trailer drivers at an operational planning level, taking int…

Predatory habits of the grasshopper-hunting waspStizus continuus(Hymenoptera: Crabronidae): diet preference, predator–prey size relationships and for…

2009

In a coastal salt-marsh of Spain, the digger wasp Stizus continuus primarily hunted for grasshoppers of the genus Heteracris, revealing (at least in the period of the study and in this area) this wasp to be almost monophagous. In contrast, grasshoppers of the genus Acrotylus were ignored by the wasps in spite of their high abundance in the environment. We hypothesize that this bias occurred because Acrotylus is found more often on the soil and on grasses, while Heteracris is nearly only found on Sarcocornia bushes, which probably represent the habitat mostly exploited by the wasps for hunting. The greater variance in size of the prey collected by larger females produced weak wasp–prey size …

Videonovērošanas sistēmu problēmas un to risinājumi

2017

Bakalaura darba “Videonovērošanas sistēmu problēmas un to risinājumi” mērķis ir izvērtēt uzņēmumu “A”,”B” un “C” esošās situācijas, izstrādāt un ieviest risinājumus, lai novērstu uzņēmumos novērotās problēmas. Darbā tiks apskatītas uzņēmuma “A” problēmas: neprecīza notikumu saņemšana gadījumos, kad kameras nestrādā un nespēju noteikt vai tiek veikts video ieraksts; uzņēmuma “B” problēma: neērts un laikietilpīgs datu izgūšanas veids; uzņēmuma “C” problēma: uzņēmumam slēdzot līgumu ar apakšuzņēmēju, netiek noteiktas skaidras vadlīnijas darbu veikšanai. Vadoties pēc izvirzītajiem uzdevumiem, uzņēmumam “A” tika izveidots veids, kā saņemt precīzus notikumus un izveidota kritisko elementu pārraud…

Coping with pandemics using social network sites: A psychological detachment perspective to COVID-19 stressors

2022

Prior research has often portrayed information technology (IT) as a stressor. In this paper, we propose and demonstrate that IT can also be an effective means of coping with life stressors, including those induced by pandemics such as COVID-19. We thus deviate from the common IT-as-a-stressor perspective and adopt an IT-as-a-coping-mechanism viewpoint. To this end, we apply the stressor-detachment model from organisational psychology to the use of social network sites (SNSs) in coping with stressors wrought by the COVID-19 pandemic. We examine psychological well-being as our dependant variable and introduce psychological detachment through SNS use as a mediator and moderator of the associat…

Latvijas Universitātes Botāniskais dārzs, 80

2002

Teksts paralēli latviešu un angļu valodā

2-AMINOETHYLPHOSPHONIC ACID IS THE MAIN PHOSPHORUS COMPOUND IN LOCUST HAEMOLYMPH

1992

Orthoptera (Insecta: Tettigonioidea, Pyrgomorphoidea, Acridoidea) of Kafa Biosphere Reserve, Bale Mountains National Park and other areas of conserva…

2016

An annotated checklist of 51 Orthoptera taxa (Tettigonioidea, Pyrgomorphoidea and Acridoidea) of Kafa Biosphere Reserve, Bale Mountains National Park and some additional sites in Ethiopia is presented. Ten species are newly recorded for the country. Four species are new to science: Peropyrrhicia attilioi n. sp., P. keffensis n. sp., P. semiensis n. sp. and Coryphosima danieli n. sp. The status of Peropyrrhicia cooperi Uvarov, 1934 and P. scotti Uvarov, 1934 is revised: both are considered valid species.

Remarks on some interesting African Pamphagidae and Acrididae (Insecta: Orthoptera: Acridoidea).

2020

The author reports about the results of a study of Porthetinae (Pamphagidae) and other Acridoidea preserved in some European museums. The taxonomy of African Porthetinae is still poorly known; some genera were established on variable characters (e.g.: the number of the flagellum segments, the shape of the hind femora or the prosternal tubercle) and collections generally hold only few specimens of this group. These insects are characterized by a remarkable sexual dimorphism, the males generally are winged while females are apterous. Because many species were described only from one sex (sometimes the female sex), there are objective difficulties to identify them correctly. The following syno…

Structural characterization and primary in vitro cell culture of locust male germline stem cells and their niche

2011

AbstractThe establishment of in vitro culture systems to expand stem cells and to elucidate the niche/stem cell interaction is among the most sought-after culture systems of our time. To further investigate niche/stem cell interactions, we evaluated in vitro cultures of isolated intact male germline–niche complexes (i.e., apical complexes), complexes with empty niche spaces, and completely empty niches (i.e., isolated apical cells) from the testes of Locusta migratoria and the interaction of these complexes with isolated germline stem cells, spermatogonia (of transit-amplifying stages), cyst progenitor cells, cyst progenitor cell-like cells, cyst cells, and follicle envelope cells. The stru…