Wyniki wyszukiwania - Biblioteka Nauki

1

Influential factors of project success in the fuel companies

100%

Al-Hodiany Z. M. , Misztal A.

Polish Journal of Management Studies

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2022

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tom Vol. 25, No. 1

72--91

EN

The purpose of the paper is to investigate the factors impacting project success among personnel based on the example of the Yemeni oil and gas industry. The data was analyzed by hypothesis testing, Smart-PLS tool, SPSS and several statistical methods such as the Structural modelling, regression weights and T statistics and regression technique, utilized to comprehend the variables' dimensionality. The results showed that influential factors i.e. personnel (P), project schedule/plan (PSP), troubleshooting (TS) and technical tasks (TT) as well as the technological advancement (TA) have a statistically significant relationship with project success. It suggests that increasing the success rate of projects may be bilaterally beneficial to the project managers. Limitations and suggestions for future research were also mentioned.

PL

Celem artykułu jest zbadanie czynników wpływających na sukces projektu wśród personelu na przykładzie jemeńskiego przemysłu naftowo-gazowego. Dane zostały przeanalizowane za pomocą testowania hipotez, narzędzia Smart-PLS, SPSS i kilku metod statystycznych, takich jak modelowanie strukturalne, wagi regresji oraz statystyki T i techniki regresji, wykorzystywane do zrozumienia wymiarowości zmiennych. Wyniki pokazały, że czynniki wpływające, tj. personel (P), harmonogram/plan projektu (PSP), rozwiązywanie problemów (TS) i zadania techniczne (TT) oraz zaawansowanie technologiczne (TA) mają statystycznie istotny związek z sukcesem projektu. Sugeruje to, że zwiększenie wskaźnika sukcesu projektów może być obustronnie korzystne dla kierowników projektów. Wspomniano również o ograniczeniach i sugestiach dotyczących przyszłych badań.

2

Study on the preparation of copper red glaze and parameters affecting its colour

100%

Luo M. , Cheng L. , Hu X. , Liang H. , Xiao Z. , Shi H. , Tang C.

Materiały Ceramiczne

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2019

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tom T. 71, nr 4

397--407

EN

Copper red glaze is one of the traditional famous glazes in China, its colour effects depend on many combined factors. In this paper, the technological parameters in the preparation process were studied by experiments, and the suitable preparation process of copper red glaze was determined. The preparation process is as follows: the use of kaolin, quartz and feldspar as the main raw materials, copper oxide as a colourant, batching, ball milling (material:ball:water = 1:1:1, 15 minutes), sieving (250 meshes), glaze impregnation (15 s - 30 s). The firing process is as follows: heating up in an oxidizing atmosphere for 2 hours to the atmosphere conversion temperature, conversion to a strong reduction temperature - slow increase to 1200 °C, conversion to a weak reduction - slow increase to the highest firing temperature, holding for 10 minutes, ceasing the firing, furnace cooling. The main factors affecting the colour of copper red glaze were studied. The experimental results show that not only the content of copper ion in the glaze and the firing atmosphere, but also the content of potassium feldspar, kaolin and quartz has a significant influence on the colour of the copper red glaze. The chromaticity values of the samples were measured and the internal mechanism of influence was preliminarily discussed based on the results of SEM and EDS analysis.

PL

Czerwone szkliwo miedziowe jest jednym z tradycyjnych słynnych szkliw w Chinach, a jego efekty kolorystyczne zależą od wielu różnych czynników. W tym artykule parametry technologiczne w procesie przygotowania zostały zbadane doświadczalnie i określono odpowiedni proces przygotowania szkliwa miedziowego. Proces przygotowania jest następujący: zastosowanie kaolinu, kwarcu i skalenia jako głównych surowców, tlenku miedzi jako barwnika, dozowanie, mielenie w młynie kulowym (materiał: kula: woda = 1: 1: 1, 15 minut), przesiewanie ( 250 oczek), impregnacja szkliwem (15 s - 30 s). Proces wypalania jest następujący: podgrzewanie w atmosferze utleniającej przez 2 godziny do temperatury konwersji atmosfery, konwersja do silnej temperatury redukcji - powolny wzrost do 1200 °C, konwersja do słabej redukcji - powolny wzrost do najwyższej temperatury wypalania, wytrzymanie przez 10 minut, zaprzestanie wypalania, chłodzenie pieca. Przebadano główne czynniki wpływające na kolor czerwonego szkliwa miedziowego. Wyniki eksperymentów pokazują, że nie tylko zawartość jonu miedziowego w szkliwie i atmosferze wypalania, ale także zawartość skalenia potasowego, kaolinu i kwarcu ma znaczący wpływ na kolor czerwonego szkliwa miedziowego. Zmierzono wartości chromatyczności próbek i wstępnie omówiono wewnętrzny mechanizm wpływu, opierając się na wynikach analizy SEM i EDS.

3

Analysis of some factors affecting business performance from non-financial aspects at enterprises in Nam Dinh province

80%

Nguyen A. T. L. , Nguyen L. V. , Truong H. T. , Bui T. T.

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2021

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tom Vol. 28

19--27

EN

Business performance of enterprises is evaluated by many different models, most of which use financial measures. However, traditional financial measures cannot provide information for strategy development because they skip customer satisfaction and quality of products and services… Therefore, non-financial measures for business performance is gaining a special advantage, in which the Balanced Scorecard model (BSC) with customers, internal processes and development training as non-financial measures has been widely recognized by many companies and highly regarded by many researchers for its role in the strategic management of enterprises. This article aims to examine the factors affecting business performance from non-financial aspects (customers, internal processes and development training) of enterprises in Nam Dinh province. The study used the quantitative research method and SPSS 26 data processing software, and is based on the estimated linear regression model with 520 feedbacks from enterprises in various fields of operation in Nam Dinh province in 2020. The research results show that the factors affecting business performance in terms of non-financial aspects are ranked in the following order: (1) Use of resources, (2) Market orientation, (3) Information technology (IT), (4) Local policies, (5) Capital accessibility and usage, and (6) State policies. On that basis, the article proposes some suitable solutions for managers to improve the business performance of enterprises in Nam Dinh province.

4

Radar-based detection and recognition methodology of autonomous surface vehicles in challenging marine environment

60%

Korban D. , Melnyk O. , Onishchenko O. , Kurdiuk S. , Shevchenko V. , Obniavko T.

Zeszyty Naukowe. Transport / Politechnika Śląska

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2024

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tom z. 122

111--127

EN

This paper presents a methodology that combines radar polarization selection and recognition techniques for navigating objects in atmospheric formations, with a special focus on unmanned surface vehicles (ASVs). The proposed technique utilizes the concept of an energy dissipation matrix to represent these objects as characteristic “shiny dots”. By strategically changing the polarization of the emitted and received electromagnetic waves, the resulting echo energy dissipation matrix is determined. This approach allows the formation of an intensity-based repository of atmospheric formations, which gives SRPC a complete set of tools to account for atmospheric conditions in radar identification of remote objects, including ASVs. The practical application of this technique extends to the improvement of a distinct class of shipborne radar systems optimized for ASVs and their specific navigation requirements. Ultimately, this technology bridges the gap between advanced radar technology and the emerging field of unmanned ground vehicles, providing safer and more proficient navigation in challenging weather conditions.