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Tytuł:
Trente ans d’étude des langages du politique (1980-2010): Mots. Les langages du politique (numéro spécial) (Anna Dutka-Mańkowska)
Autorzy:
Bacot, P.
Coulomb-Gully, M.
Honoré, J.-P.
Le Bart, Ch.
Oger, C.
(coord.), Plantin Ch.
Powiązania:
https://bibliotekanauki.pl/articles/702238.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Źródło:
Kwartalnik Neofilologiczny; 2011, 1
0023-5911
Pojawia się w:
Kwartalnik Neofilologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effect of Product Diversification on Corporate Social Performance in the Non-Renewable Energy Industry: Exploring the moderating effects of host country development and the Sustainable Development Goals
Autorzy:
Jongsma, Renske
Pennink, Bart Jan (Bartjan)
Powiązania:
https://bibliotekanauki.pl/articles/14138974.pdf
Data publikacji:
2020-12-17
Wydawca:
Wyższa Szkoła Bankowa we Wrocławiu
Tematy:
stakeholder theory
institutional theory
product diversification
corporate social performance
sustainable development goals
non-renewable energy industry
Opis:
Aim: Building upon stakeholder and institutional theory, this paper investigates the relationship between product diversification and corporate social performance (CSP), thereby attempting to make essential contributions to the current literature. Based on an extensive literature review, it was expected that related, unrelated and total product diversification are positively related to CSP. Moreover, it was hypothesized that the exposure to weak institutional host country environments negatively affects the relationship between diversification and CSP, and that the Sustainable Development Goals (SDGs) have a positive effect on the relationship. Design / Research methods: The sample selected for this research is the non-renewable energy industry, since the industry shows great divergence in terms of corporate social responsibility (CSR) performance. In addition, the industry is highly susceptible to regulatory changes, while the Sustainable Development Goals have an enormous focus on the reliability and sustainability of energy, making it a highly relevant industry to study. This study analyzed 40 a 40 non-renewable energy firms over a time frame of seven years, by using OLS regression. Conclusions / findings: The results reveal that unrelated diversification is positively related to CSP, while the other forms of diversification show insignificant results. Contrary to expectations, the Sustainable Development Goals negatively affect the relationship between product diversification and CSP, while the moderating effect of exposure to weak institutional environments is insignificant. Originality / value of the article: Research on the relationship between product diversification on corporate financial performance is well-established, but the way in which product diversification influences a firm’s behavior towards stakeholder demands and social concerns remains largely unexplored. Accordingly, the results of this study challenge existing theories while adding more context to the existing relationship, and in turn provide promising avenues for future research.
Źródło:
Central European Review of Economics and Management; 2020, 4, 4; 69-95
2543-9472
Pojawia się w:
Central European Review of Economics and Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The appropriateness of electronic reverse auctions – an explanation from the incomplete contract theory and the resource dependence theory
Autorzy:
GELDERMAN, Cees J.
SEMEIJN, Janjaap
NAGEL, Bart Willem
Powiązania:
https://bibliotekanauki.pl/articles/529752.pdf
Data publikacji:
2017
Wydawca:
Wyższa Szkoła Bankowa we Wrocławiu
Tematy:
Auctions
Procurement
Transactional relationships)
Other – electronic reversed auctions
Opis:
Despite the growing importance of electronic reversed auctions (ERAs) few empirical studies have explored the appropriateness of ERA usage. Most commonly, transaction cost theory has been used for these ERA-studies, relying on arguments that consider asset specificity as the primary explanation for organizational boundaries. We seek a more thorough explanation for perceived Electronic Reverse auctions (ERA) appropriateness, using multiple theoretical perspectives. This study includes insights and variables from the incomplete contract theory and the resource dependence theory. A conceptual model for ERA appropriateness was developed from the buyer perspective. This model was empirically validated using a survey of 176 purchasing professionals. The findings suggest a positive impact of buyer power on ERA appropriateness, while total interdependence does not appear to affect ERA appropriateness. The results further indicate that asset specificity stimulates ERA usage. ERA-minded purchasers consider ERAs as a tool for exploiting buyer power and for imposing relationship investments on suppliers. At the same time, variables related to collaboration do not appear to be important for ERA appropriateness from the perspective of the buyer. Suppliers are required to make relation-specific investments, but are not valued for their relational efforts. The novelty of this article Scholars have taken several approaches to investigate and to explain company’s sourcing decisions that include ERA use. We address an important gap in the literature by using the incomplete contract theory in combination with the resource dependence theory to provide a better understanding of buyers’ perceived ERA appropriateness.
Źródło:
Central and Eastern European Journal of Management and Economics (CEEJME); 2017, No. 1; 9-29
2353-9119
Pojawia się w:
Central and Eastern European Journal of Management and Economics (CEEJME)
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some fragments of second-order logic over the reals for which satisfiability and equivalence are (un)decidable
Autorzy:
Grimson, Rafael
Kuijpers, Bart
Powiązania:
https://bibliotekanauki.pl/articles/1368654.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Opis:
We consider the $\Sigma_0^1$-fragment of second-order logic over the vocabulary $\langle+, \times, 0, 1, <, S_1, ..., S_k \rangle$, interpreted over the reals, where the predicate symbols $S_i$ are interpreted as semialgebraic sets. We show that, in this context, satisability of formulas is decidable for the first-order $\exists$*-quantifier fragment and undecidable for the $\exists$*$\forall$- and $\forall$*-fragments. We also show that for these three fragments the same (un)decidability results hold for containment and equivalence of formulas.
Źródło:
Reports on Mathematical Logic; 2014, 49; 23-34
0137-2904
2084-2589
Pojawia się w:
Reports on Mathematical Logic
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance analysis of a desiccant evaporative cooling system for mango fruit storage in the savannah and transitional zones of Ghana
Analiza wydajności systemu pośredniego chłodzenia wyparnego do przechowywania owoców mango na sawanach i w strefach przejściowych Ghany
Autorzy:
Awafo, Edward
Addo, Ahmad
Bart-Plange, Ato
Powiązania:
https://bibliotekanauki.pl/articles/93621.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
mango
storage
dehumidification
evaporative cooling
Ghana
przechowywanie
osuszanie
chłodzenie wyparne
Opis:
Performance analysis of a 1.0 tonne desiccant evaporative cooling storage structure for mango fruits was studied. The study examined the effects of inlet air conditions and water flow rates through an absorber on the cooling performance of the system. The airflow rate was approximately 0.24 m3·s -1 and water flow rates through the absorber varied from 0 to 0.252 l·s -1 . The system produced approximately 7 kW of cooling at water supply rate of 0.252 l·s -1. A simple linear correlation was established for condition line slope from inlet to exiting air conditions for all the water flow rates. Lines of best fit resulted in correlation coefficient better than 0.96. The observed temperatures with a direct evaporative cooler, tested with freshly harvested mango fruits were found to be between 15.1°C and 23.4°C and relative humidity between 81.8% and 97.7%. Physiological weight loss and firmness assessments of the fruits were also conducted.
Artykuł omawia analizę wydajności chłodni wyparnej o poj. 1,0 tony, wykorzystywanej do przechowywania owoców mango. Zbadano wpływ warunków wlotowych powietrza i szybkości przepływu wody przez pochłaniacz na wydajność chłodniczą systemu. Natężenie przepływu powietrza wynosiło około 0,24 m3·s-1 , a natężenie przepływu wody przez absorber wahało się od 0 do 0,252 l·s-1 . W tym czasie wyprodukowano około 7 kW chłodu przy przepływie wody wynoszącym 0,252 l·s -1 . Określono prostą korelację liniową nachylenia linii wykresu warunków, od wlotu do wylotu powietrza, dla wszystkich wielkości przepływu wody. Linie o najlepszym dopasowaniu dały współczynnik korelacji powyżej 0,96. Zaobserwowane temperatury chłodni wyparnej, sprawdzane na świeżo zebranych owocach mango, wynosiły od 15,1°C do 23,4°C, a wilgotność względna od 81,8% do 97,7 %. Dokonano również oceny fizjologicznej utraty masy i jędrności owoców.
Źródło:
Agricultural Engineering; 2019, 23, 3; 1-14
2083-1587
Pojawia się w:
Agricultural Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of Lycopene Extraction from Tomato Pomace and Effect of Extract on Oxidative Stability of Peanut Oil
Autorzy:
Tran, Dinh T.
Nguyen, Lan T.
Nguyen, Cuong N.
Hertog, Maarten L.
Nicolaï, Bart
Picha, David
Powiązania:
https://bibliotekanauki.pl/articles/16538548.pdf
Data publikacji:
2023-07-05
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
Antioxidant
Response surface methodology
Optimization
Lycopene
Extraction
Peanut oil stability
Opis:
Lycopene, the pigment principally responsible for the red color of tomatoes, is well-known for its strong antioxidant property and substantial health benefits. In this study, the optimal combination of factors for lycopene extraction from tomato pomace was identified using response surface methodology. The best practically feasible results maximizing both lycopene yield and antioxidant activity of the extract were obtained by applying a ratio of ethyl acetate to tomato waste of 35:1 (v/w), at a temperature of 55ºC for 100 min of extraction. The extract was then added to the peanut oil to evaluate its oxidative stability during 60 days of storage at 40ºC. It was shown that the addition of 2 g extract/kg oil offered the lowest level of peroxide value, p-anisidine value, and total oxidation value, followed by the oils with 50 mg butylated hydroxytoulene/kg oil and 1 g extract/kg oil, indicating the effect of lycopene-rich extract on enhancing the oxidative stability of peanut oil. The results in this study suggest that incorporation of extract rich in lycopene from tomato waste products may be an effective method to reduce oxidation and extend the shelf-life of peanut and other vegetable oils.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2023, 73, 3; 205-213
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Limno-terrestrial diatom flora in two stream valleys near Arctowski Station, King George Island, Antarctica
Autorzy:
Noga, Teresa
Kochman-Kędziora, Natalia
Olech, Maria
Van de Vijver, Bart
Powiązania:
https://bibliotekanauki.pl/articles/2041794.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Antarctic
South Shetland Islands
soil diatoms
sediments
diversity
Ornithologist Creek
Petrified Forest Creek
Źródło:
Polish Polar Research; 2020, 41, 4; 289-314
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
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