Wyniki wyszukiwania - BazTech

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The Impact of Social Media Sites on Developing Consistently among Students to Achieve Responsible Behaviour: a Field Study for Students of Northern Border University

Benarous Djamel, Al-Enezi Hamood, Louail Bilal

Management

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2022

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Vol. 26, no. 1

36--62

EN

The aim of this study was to determine the influence of social media on students’ awareness of responsible behaviour during the COVID-19 pandemic. The field study was carried out with a sample of 726 students from Northern Border University. Data were collected from electronically retrieved questionnaires via various communication channels and analysed using hierarchical linear regression. The study found a relationship between the use of social media sites and awareness among students, affected by age differences. With the emergence of the COVID-19 pandemic, universities face the challenge of ensuring precautionary guidelines to prevent the virus are followed while educating their students, and social media plays a significant role in disseminating this information. Therefore, studying how social media helps develop students’ awareness can contribute to addressing some of the problems faced by decisionmakers in Saudi universities.

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Limit wear of working parts of subsoil shanks with regard to their design solutions

Stawicki T.

Journal of Research and Applications in Agricultural Engineering

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2018

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Vol. 63, nr 1

115--120

EN

The report presents results of a 3D study of the contour and angles of subsoil shanks changes which develop due to wear caused by the soil during the ground cultivation. The results of 3D imaging were subject to the analysis aimed at the identification of the limit wear of the parts concerned. Significant differences were found in changes in the contour and angles of blades with regard to the design variants. The results of the study can indicate a need of further operation research to verify the suitability of certain variants of the blades exhibiting differences in terms of material and design.

PL

Przedstawiono wyniki badań 3D stanu geometrii dłut głębosza, który konstytuował się w następstwie zużyciowego oddziaływania gleby w warunkach uprawy polowej. Wyniki obrazowania 3D poddano analizie ukierunkowanej na identyfikację granicznego stanu zużycia badanych elementów. Stwierdzono, że występują istotne różnice w wywoływanych zużyciem zmianach geometrii dłut w zależności od ich wariantu konstrukcyjnego. Uzyskane wyniki badań stanowią przesłankę do wnioskowania o potrzebie realizacji badań eksploatacyjnych, jako niezbędnych dla weryfikacji przydatności użytkowej wariantów dłut głębosza, wykazujących różnice materiałowo-konstrukcyjne.

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Field and Laboratory Studies of the Earthworm Dendrobaena Alpina

Kostecka J., Butt K. R.

Journal of Ecological Engineering

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2015

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Vol. 16, nr 5

213--217

EN

Distribution of Dendrobaena alpina covers the mountainous region of central Europe, where it has a high dominance and frequency index. This work describes data from field studies conducted over two annual cycles in the Bieszczady National Park (BNP), Poland, in different types of beech forest. Densities of this species ranged from 47–231 g·m -2 with associated biomasses of 19–90 g·m -2. Most (66%) were recovered from less than 0.1 m soil depth with a further 28% from up to 0.2 m. Further, the animals were collected alive from Lutowiska, close to the BNP to obtain baseline data on the life history of D. alpina. Mature individuals were kept in isolation and cocoon production monitored on a 2 monthly basis. Immature individuals were kept until they reached maturity, when they were paired, with combined output of cocoons regularly monitored. Cocoons were collected, had their masses determined and were incubated. Hatchability was recorded, as was estimated duration of incubation and growth to maturity. Field-collected adults had a mean mass of 1.4 g and at 15 ºC, these produced an average of 1.83 cocoons·worm -1·month -1. Zero cocoons were produced by further specimens, collected as immature, grown to maturity and maintained in isolation. Recently-matured, paired D. alpina produced an average of 1.65 cocoons·worm -1·month -3. Cocoons had a mean mass of 19 mg. At 15 ºC, cocoons produced by recently matured adults hatched after 80 days (82% viable), but after 2 months the majority of cocoons failed to hatch. Hatchling growth from an average of 18 mg to maturity required 7–11 months in the given substrate.

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Field study of film spreading on a sea surface

Korinenko A. E., Malinovsky V. V.

Oceanologia

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2014

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No. 56 (3)

461--475

EN

The results of a field study of surface film spreading on the sea surface are presented. The experiments were carried out in the coastal zone of the Black Sea in a wide range of wind speeds and wave conditions. Vegetable oil was used for preparing the surfactants. It was found that at moderate and strong wind speeds the slicks take on a shape similar to an ellipse and are orientated in the direction of the air flow. An increase in the speed of the spreading slick along its major axis with strong wind was discovered.

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Ocena wpływu otwartej erupcji ropy naftowej na środowisko gruntowo-wodne na przykładzie otworu Daszewo-1

Macuda J., Dubiel S.

Wiertnictwo, Nafta, Gaz

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2010

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T. 27, z. 1--2

251-259

PL

Na przełomie lat 1980-1981, podczas wiercenia otworu poszukiwawczego "Daszewo-1" wystąpiła otwarta erupcja węglowodorów. Intensywny wypływ ropy naftowej na powierzchnię wraz z towarzyszącym jej gazem ziemnym trwał 33 dni i w tym czasie przedostało się do środowiska od kilkunastu do kilkudziesięciu tysięcy ton ropy naftowej. W wyniku zaistniałej erupcji stwierdzono zanieczyszczenie gleb ropą naftową wokół otworu "Daszewo-1" na obszarze 27 ha. Dla ukazania aktualnego stanu środowiska gruntowo-wodnego, po upływie około 30 lat od zaistniałej awarii pobrano do badań laboratoryjnych próbki gleb, gruntów i wód podziemnych w celu oznaczenia w nich koncentracji węglowodorów. Otrzymane wyniki porównano z aktualnie obowiązującymi standardami jakości gleb i gruntów oraz wód podziemnych dla terenów upraw rolniczych i nie stwierdzono przekroczeń dopuszczalnych koncentracji węglowodorów.

EN

At the turn of 1980-1981, when exploration well "Daszewo-1" was drilled, an intense eruption of oil and natural gas occurred. It lasted 33 days and during that time dozen to tens thousands tones of oil were released to the environment. The soils around well "Daszewo-1" were polluted in the area of 27 ha. After 30 years the soil, ground and groundwater samples were taken for laboratory analyses, during which hydrocarbon concentrations were established. The obtained results were compared with the present qualitative standards of soil, ground and groundwater in the agricultural areas. They do not reveal any higher values than the standards for admissible hydrocarbon concentrations.

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The Workload and Performance Relationship in the Real World: A Study of Police Officers in a Field Shooting Exercise

Oron-Gilad T., Szalma J. L., Stafford S. C., Hancock P. A.

International Journal of Occupational Safety and Ergonomics

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2008

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Vol. 14, No. 2

119--131

EN

We examined the relationship between perceived workload and performance by evaluating the responses of police officers to 4 different draw-and-shoot tasks in a night field training exercise which was part of their regular training regimen. Sixty-two police officers volunteered to participate. Results demonstrated an associative trend among 3 tasks where shooting performance decreased and workload increased as the tasks became more complex. However, performance on 1 specific shooting task did not correlate with any of the other 3 tasks, and in this 1 exceptional case, insensitivities were observed in which workload increased but performance remained constant.

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Box Handling in the Loading and Unloading of Vans

Lortie M., Baril-Gingras G.

International Journal of Occupational Safety and Ergonomics

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1998

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Vol. 4, No. 1

3--18

EN

The handling of 2,306 boxes being loaded or unloaded from vans onto or from 4-wheeled trolleys by 31 handlers in a warehouse were characterized. Handling was videotaped and characterized through an analysis grid completed by three trained observers. The following execution parameters were observed: nature of the exertion applied by the upper limbs, plane and direction of the exertion, resulting displacement of the box, grip, use of the lower limbs and the back. Results show that execution parameters used by handlers vary considerably from those usually recommended or studied. For example, symmetric grips were rarely used (4%). The grip was modified during the handling of half the boxes. Significant knee flexion was rarely observed (3% of exertions). Each box was moved by applying an average of . 3.5 different exertions. Exertions were mostly applied in a plane parallel to the shoulders; they were rarely executed in a strict sagittal plane (11%). The implication of these observations are discussed.