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Tytuł:
Causal reversibility in individual token interpretation of Petri Nets
Autorzy:
Benamira, Adel
Powiązania:
https://bibliotekanauki.pl/articles/1839245.pdf
Data publikacji:
2020
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
reversibility
concurrent systems
Petri Nets
causality
Opis:
Causal reversibility in concurrent systems means that events that the origin of other events can only be undone after undoing its consequences. In opposition to backtracking, events that are independent of each other can be reversed in an arbitrary order; in other words, we have flexible reversibility with respect to a causality relationship. An implementation of individual token interpretation of Petri Nets (IPNs) has been proposed by Rob Van Glabbeek et al.; the present paper investigates a study of causal reversibility within IPNs. Given N as an IPN, by adding an intuitive firing rule to undo transitions according to the causality relationship, the coherence of N is assured; i.e., the set of all reachable states of N in the reversible version and that of the original one are identical. Furthermore, reversibility in N is flexible, and their initial state can be accessible in reverse from any state. In this paper, an approach for controlling causal-reversibility within IPNs is proposed.
Źródło:
Computer Science; 2020, 21 (4); 489-511
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The breakthrough of Bedouin women in Northern Israel – a conflict between generations
Autorzy:
Ayada, Adel
Powiązania:
https://bibliotekanauki.pl/articles/951798.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
young women
Bedouin
tradition
Opis:
The article examines the breakthrough of Bedouin women in Northern Israel, based on the testimony of twenty young Bedouin women who did not accept the ‘traditional’ role of the woman, in the family in particular and in Bedouin society in the village in general. This group of women succeeded in breaking the boundaries of the tribe and struggled for the right to complete high school and even to study in the institutions of higher education.
Źródło:
Kultura-Społeczeństwo-Edukacja; 2018, 13, 1; 248-253
2300-0422
Pojawia się w:
Kultura-Społeczeństwo-Edukacja
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Existence and Topological Properties of Solution Sets for Differential Inclusions with Delay
Autorzy:
Gomaa, Adel Mahmoud
Powiązania:
https://bibliotekanauki.pl/articles/746625.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Differential inclusions
mutifunctions
measures of noncompactness
delay
Opis:
We consider the problem \(\dot{x}(t) \in A(t)x(t) + F (t, θ_t x))\) a.e. on \([0, b]\), \(x = \kappa\) on \([-d, 0]\) in a Banach space \(E\), where \(\kappa\) belongs to the Banach space, \(C_E ([-d, 0])\), of all continuous functions from \([-d, 0]\) into \(E\). A multifunction \(F\) from \([0, b] \times C_E ([-d, 0])\) into the set, \(P_{f_c} (E)\), of all nonempty closed convex subsets of \(E\) is weakly sequentially hemi-continuous, \(θ_t x(s) = x(t + s)\) for all \(s \in [-d, 0]\) and \(\{A(t) : 0 \leq t \leq b\}\) is a family of densely defined closed linear operators generating a continuous evolution operator \(S(t, s)\). Under a generalization of the compactness assumptions, we prove an existence result and give some topological properties of our solution sets that generalizes earlier theorems by Papageorgiou, Rolewicz, Deimling, Frankowska and Cichoń.
Źródło:
Commentationes Mathematicae; 2008, 48, 1
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Plant ecological groups and soil properties of common hazel (Corylus avellana L.) stand in Safagashteh forest, north of Iran
Autorzy:
Pourbabaei, H.
Naghi Adel, M.
Powiązania:
https://bibliotekanauki.pl/articles/38451.pdf
Data publikacji:
2015
Wydawca:
Instytut Badawczy Leśnictwa
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2015, 57, 4
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the total k-domination number of graphs
Autorzy:
Kazemi, Adel
Powiązania:
https://bibliotekanauki.pl/articles/743228.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
total k-domination (k-tuple total domination) number
k-tuple domination number
k-transversal number
Opis:
Let k be a positive integer and let G = (V,E) be a simple graph. The k-tuple domination number $γ_{×k}(G)$ of G is the minimum cardinality of a k-tuple dominating set S, a set that for every vertex v ∈ V, $|N_G[v] ∩ S| ≥ k$. Also the total k-domination number $γ_{×k,t}(G)$ of G is the minimum cardinality of a total k -dominating set S, a set that for every vertex v ∈ V, $|N_G(v) ∩ S| ≥ k$. The k-transversal number τₖ(H) of a hypergraph H is the minimum size of a subset S ⊆ V(H) such that |S ∩e | ≥ k for every edge e ∈ E(H).
We know that for any graph G of order n with minimum degree at least k, $γ_{×k}(G) ≤ γ_{×k,t}(G) ≤ n$. Obviously for every k-regular graph, the upper bound n is sharp. Here, we give a sufficient condition for $γ_{×k,t}(G) < n$. Then we characterize complete multipartite graphs G with $γ_{×k}(G) = γ_{×k,t}(G)$. We also state that the total k-domination number of a graph is the k -transversal number of its open neighborhood hypergraph, and also the domination number of a graph is the transversal number of its closed neighborhood hypergraph. Finally, we give an upper bound for the total k -domination number of the cross product graph G×H of two graphs G and H in terms on the similar numbers of G and H. Also, we show that this upper bound is strict for some graphs, when k = 1.
Źródło:
Discussiones Mathematicae Graph Theory; 2012, 32, 3; 419-426
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Generalized extended Marshall-Olkin family of lifetime distributions
Autorzy:
Goldoust, Mehdi
Mohammadpour, Adel
Powiązania:
https://bibliotekanauki.pl/articles/2034093.pdf
Data publikacji:
2022-03-15
Wydawca:
Główny Urząd Statystyczny
Tematy:
compound distribution
hazard rate function
lifetime distribution
maximum likelihood estimation
power series distribution
Opis:
We introduce a new generalized family of nonnegative continuous distributions by adding two extra parameters to a lifetime distribution, called the baseline distribution, by twice compounding a power series distribution. The new family, called the lifetime power series-power series family, has a serial arrangement of parallel structures, which extends the Marshall and Olkin structure. Four special models are discussed. A mathematical treatment of the new distributions is provided, including ordinary and incomplete moments, quantile, moment generating and mean residual functions. The maximum likelihood estimation technique is used to estimate the model parameters and a simulation study is conducted to investigate the performance of the maximum likelihood estimates. Its applicability is also illustrated by means of two real data sets.
Źródło:
Statistics in Transition new series; 2022, 23, 1; 55-74
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The potential of TED talks for developing prospective United Nations police monitors’ listening performance
Autorzy:
Bataineh, Ruba Fahmi
Al-refa'i, Adel Mohammad
Powiązania:
https://bibliotekanauki.pl/articles/605870.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
listening
TED talks, UN police monitors
Opis:
Der Band enthält die Abstracts ausschließlich in englischer Sprache.
This study investigated the potential effect of using Technology, Entertainment and Design (TED) talks in developing the listening performance of an available sample of 25 Jordanian enrollees in United Nations (UN) police monitors courses. The study follows a one group, pre-/post-test quasi-experimental design. Following a four-week treatment, the data analysis, both quantitative and qualitative, revealed a positive effect for the utilization of TED talks on the participants’ listening performance. The participants were further self-reportedly satisfied with the content, method and timing of treatment as well as their motivation, interaction, and overall improvement.
Le numéro contient uniquement les résumés en anglais.
Źródło:
Lublin Studies in Modern Languages and Literature; 2019, 43, 3
0137-4699
Pojawia się w:
Lublin Studies in Modern Languages and Literature
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On theorems for weak solutions of nonlinear differential equations with and without delay in Banach spaces
Autorzy:
Gomaa, Adel Mahmoud
Powiązania:
https://bibliotekanauki.pl/articles/745302.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Nonlinear differential equations
weak solutions
measures of noncompactness
delay
Opis:
In the present work we give an existence theorem for bounded weak solution of the differential equation \[ \dot{x}(t) = A(t)x(t) + f (t, x(t)),\quad t \geq 0 \] where \(\{A(t) : t \in I\mathbb{R}^+ \}\) is a family of linear operators from a Banach space \(E\) into itself, \(B_r = \{x \in E : \|x\| \leq r\}\) and \(f \colon \mathbb{R}^+ \times B_r \to E\) is weakly-weakly continuous. Furthermore, we give existence theorem for the differential equation with delay \[ \dot{x}(t) = \hat{A}(t) x(t) + f^d (t, θ_t x)\quad \text{if}\ t \in [0, T], \] where \(T, d \gt 0\), \(C_{B_r} ([-d, 0])\) is the Banach space of continuous functions from \([-d, 0]\) into \(B_r\), \(f_d\colon [0, T] \times C_{B_r} ([-d, 0]) \to E\) weakly-weakly continuous function, \(\hat{A}(t)\colon [0,T] \to L(E)\) is strongly measurable and Bochner integrable operator on \([0,T]\) and \(θ_t x(s) = x(t + s)\) for all \(s \in [-d, 0]\).
Źródło:
Commentationes Mathematicae; 2007, 47, 2
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Fourth Space as an Escape from Colliding Cultures in Mohja Kahfs "The Girl in the Tangerine Scarf"
Autorzy:
Berrebbah, Ishak Adel
Powiązania:
https://bibliotekanauki.pl/articles/605825.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
Diaspora
Fourth Space
Consciousness
Self-realization
Self-identity.
Opis:
Der Band enthält doie Abstracts ausschließlich in englischer Sprache.
The main axis of Arab American literature is its portrayal of the experiences that Arab Americans go through in their daily life inside and outside the USA. Taking Mohja Kahf’s novel as a literary sample, this paper examines the extent to which triple consciousness, faith development, and existentialist thought forge Khadra’s perplexity in understanding her identity – she struggles to explore her true self in two different cultural realms i.e., Mecca and Indianapolis. By employing points of view and criticism of well-known scholars and critics such as Erik Erikson, Henri Tajfel and James Fowler, this paper concludes that Khadra, as an escape from her psychological unrest in two incompatible cultures, locates herself in what I call as the fourth space.
L'article contient uniquement les résumés en anglais.
Źródło:
Lublin Studies in Modern Languages and Literature; 2019, 43, 4
0137-4699
Pojawia się w:
Lublin Studies in Modern Languages and Literature
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of Groundwater Vulnerability Using the DRASTIC Method in Ouargla Shallow Aquifer (Algerian Sahara)
Autorzy:
Satouh, Adel
Boualem, Bouselsal
Chellat, Smaine
Benaabidate, Lahcen
Powiązania:
https://bibliotekanauki.pl/articles/1838286.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
Ouargla
shallow aquifer
vulnerability
DRASTIC
land-use
Opis:
Groundwater is the main source for many uses around the city of Ouargla. In this study, the DRASTIC method was used to assess the vulnerability of the groundwater aquifer. Seven hydrogeological parameters of the model (D water depth, R efficient charging, A aquifer type, S soil type, T topography, I unsaturated zone and C hydraulic conductivity) were measured and mapped. The intrinsic vulnerability map of the shallow aquifer, using the DRASTIC method, shows a high to very high vulnerability to pollution; 91.6% of the study area has high vulnerability, 8.4% of it has very high vulnerability. The comparison of the DRASTIC maps with the land use map illustrates that the agglomerations and irrigated areas are the most vulnerable areas to pollution, due to the low depth of the aquifer and the infiltration of significant domestic and irrigation wastewater. The results show that the relationship coefficient between the DRASTIC index and nitrate concentration is R = 0.73. This indicates that the groundwater vulnerability mapping by using the DRASTIC method can be applied for sensible groundwater resources management and land-use planning in the study area.
Źródło:
Journal of Ecological Engineering; 2021, 22, 6; 12-19
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of Groundwater Vulnerability Using the DRASTIC Method in Ouargla Shallow Aquifer (Algerian Sahara)
Autorzy:
Satouh, Adel
Boualem, Bouselsal
Chellat, Smaine
Benaabidate, Lahcen
Powiązania:
https://bibliotekanauki.pl/articles/1838393.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
Ouargla
shallow aquifer
vulnerability
DRASTIC
land-use
Opis:
Groundwater is the main source for many uses around the city of Ouargla. In this study, the DRASTIC method was used to assess the vulnerability of the groundwater aquifer. Seven hydrogeological parameters of the model (D water depth, R efficient charging, A aquifer type, S soil type, T topography, I unsaturated zone and C hydraulic conductivity) were measured and mapped. The intrinsic vulnerability map of the shallow aquifer, using the DRASTIC method, shows a high to very high vulnerability to pollution; 91.6% of the study area has high vulnerability, 8.4% of it has very high vulnerability. The comparison of the DRASTIC maps with the land use map illustrates that the agglomerations and irrigated areas are the most vulnerable areas to pollution, due to the low depth of the aquifer and the infiltration of significant domestic and irrigation wastewater. The results show that the relationship coefficient between the DRASTIC index and nitrate concentration is R = 0.73. This indicates that the groundwater vulnerability mapping by using the DRASTIC method can be applied for sensible groundwater resources management and land-use planning in the study area.
Źródło:
Journal of Ecological Engineering; 2021, 22, 6; 12-19
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Land vehicle navigation using low-cost integrated smartphone gnss mems and map matching technique
Autorzy:
Mahmoud, Mostafa
Abd Rabbou, Mahmoud
El Shazly, Adel
Powiązania:
https://bibliotekanauki.pl/articles/2174936.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Centrum Badań Kosmicznych PAN
Tematy:
BSSD
MEMS
Kalman filter
hidden Markov model
Viterbi algorithm
Opis:
The demand for smartphone positioning has grown rapidly due to increased positioning accuracy applications, such as land vehicle navigation systems used for vehicle tracking, emergency assistance, and intelligent transportation systems. The integration between navigation systems is necessary to maintain a reliable solution. High-end inertial sensors are not preferred due to their high cost. Smartphone microelectromechanical systems (MEMS) are attractive due to their small size and low cost; however, they suffer from long-term drift, which highlights the need for additional aiding solutions using road network that can perform efficiently for longer periods. In this research, the performance of the Xiaomi MI 8 smartphone's single-frequency precise point positioning was tested in kinematic mode using the between-satellite single-difference (BSSD) technique. A Kalman filter algorithm was used to integrate BSSD and inertial navigation system (INS)-based smartphone MEMS. Map matching technique was proposed to assist navigation systems in global navigation satellite system (GNSS)-denied environments, based on the integration of BSSD-INS and road network models applying hidden Marcov model and Viterbi algorithm. The results showed that BSSD-INS- map performed consistently better than BSSD solution and BSSD–INS integration, irrespective of whether simulated outages were added or not. The root mean square error (RMSE) values for 2D horizontal position accuracy when applying BSSD-INS-map integration improved by 29% and 22%, compared to BSSD and BSSD-INS navigation solutions, respectively, with no simulated outages added. The overall average improvement of proposed BSSD-INS-map integration was 91%, 96%, and 98% in 2D horizontal positioning accuracy, compared to BSSD-INS algorithm for six GNSS simulated signal outages with duration of 10, 20, and 30 s, respectively.
Źródło:
Artificial Satellites. Journal of Planetary Geodesy; 2022, 57, 3; 138--157
2083-6104
Pojawia się w:
Artificial Satellites. Journal of Planetary Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficacy of three entomopathogenic fungi alone or in combination with diatomaceous earth modifications for the control of three pyralid moths in stored grains
Autorzy:
Sabbour, M.M.
El-Sayed Abt-El-Aziz, S.
Adel Sherief, M.
Powiązania:
https://bibliotekanauki.pl/articles/65723.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
The efficacy of Natural diatomaceous (DE) alone and combined with three fungal pathogens: Beauveria bassiana, Metarhizium anisopliae and Isaria fumosorosea against three moth species, Plodia interpunctella, Ephestia cautella and E. kuehniella was evaluated. Modified diatoms with Calcium hydroxide (Ca-DE) and modified diatoms with Sodium hydroxide (Na-DE) were the highlight treatments against tested insects and achieved the highest mortality percentages. E. kuehniella achieved the highest tolerant to tested DEs. B. bassiana was the most effective fungus alone against the three tested insects. Ca-DE and Na-DE treatments strongly enhanced the potency of the tested fungi. E. kuehniella was more susceptible to M. anisopliae and B. bassiana. Larvae of P. interpunctella and E. cautella were more tolerant to I. fumosorosea alone than E. kuehniella. In most cases, DE combinations with tested fungi had synergistic effects, while in E. cautella, modified diatoms with Aluminium hydroxide (Al-DE) decreased the efficacy of M. anisopliae and I. fumosorosea. Also, Al-DE and DE impaired the efficacy of I. fumosorosea against E. kuehniella. The egg production was highly suppressed by combination of Ca-DE followed by Na-DE with tested fungi in comparison to untreated control. The combination of Ca-DE/Beauveria bassiana strongly suppressed the number of deposited eggs of P. interpunctella (54.6±5.8 eggs/female), in comparison to untreated control (288.3±3.4 eggs/female). The most effective DEs modification were Ca-DE and Na-DE had insecticidal, repellent and ovicidal effects against tested insects and they had synergistic effects on the potency of tested fungi.
Źródło:
Journal of Plant Protection Research; 2012, 52, 3
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physicochemical properties of pseudobrookite Fe2TiO5 synthesized from ilmenite ore by co-precipitation route
Autorzy:
Mahmoud, Mohamed H. H.
Hessien, Mahmoud M.
Alhadhrami, Abdulrahman
Gobouri, Adel A.
Powiązania:
https://bibliotekanauki.pl/articles/109822.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
ilmenite ore
pseudobrookite
Co-precipitation
nanocrystalline
magnetic properties
Opis:
Pseudobrookite (Fe2TiO5) is a semiconductor with numerous potential applications. Low-grade ilmenite ore has been used as an inexpensive source of Fe and Ti for preparation of Pseudobrookite. Ilmenite was first leached with 20% hydrochloric acid for 3 h at 70°C. Co-precipitation of soluble Fe and Ti from the rich filtrate was carried out at pH ≥ 9.1 followed by calcination at different temperatures (900-1300oC) for 2 h. X-ray diffraction patterns (XRD) showed that a single-phase nanocrystalline pseudobrookite powder was produced. The pH was a critical parameter for the evolution of formation the different sizes, structural morphology, and the magnetic properties of the product. Scanning electron microscope (SEM) images showed that particles synthesized at pH 11.2 contained more agglomerations and were more porous than those synthesized at pH 9.1. As the calcination temperature increases, the Fe2TiO5 changes from a small rod-like structure to an elongated rod-like structure, and finally to interconnected aggregated crystals. The magnetization of the synthesized Fe2TiO5 was measured using a vibrating sample magnetometer (VSM) and was found steadily increase with increasing calcination temperature from 1000 (≈9 emu/g) to 1300°C (16 emu/g). Such a large saturation of magnetization might be due to the high phase purity and well-defined crystallinity of Fe2TiO5.
Źródło:
Physicochemical Problems of Mineral Processing; 2019, 55, 1; 290-300
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A pedological study attempting to combine soil taxonomy and WRB classification systems
Autorzy:
Zayed, Adel M.A.
Abdel Ghaffar, Mamdouh K.
Ali, Faiza S.
Ewida, Esmail H.
Powiązania:
https://bibliotekanauki.pl/articles/27312660.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
North-East Nile Delta
pedological study
physiographic units
soil classification
Opis:
The study area is located in the North-Eastern part of the Nile Delta, northern of Ismailia canal and western Suez Canal. It comprises an area of about 3,058.8 km 2 (728,285.38 feddans). This work aims to identify the main physiographic units and its features, as well as emphasise the importance of combining soil taxonomy (2014) and WRB classification (2022) systems. Two main physiographic units were distinguished in the study area according to the previous studies, interpretation of satellite image and digital elevation model (DEM) as well as field observations; the first consists of fluvio-marine flats and the second river terraces which include the fluvial and deltaic origin. According to field morphological descriptions as well as chemical and physical analyses, representative profiles are classified by using both Soil Taxonomy and WRB systems. The current study is the third manuscript to emphasise the importance of using both systems together in order to obtain maximum possible characteristics of the earth. Below are examples that illustrate this importance. Soils of profile No. 4 which represent the fluvio-marine soils are classified according to soil taxonomy as follows: Typical Haplosalids, fine silty, mixed, thermic. While these soils are classified according to WRB as follows: Fluvic Sodic Solonchaks (Siltic/Loamy/Clayic, Chloridic, Evapocrustic, Ochric, Hypersalic). Soils of gypsiferous which represent soils of profile No. 6 are classified according to Soil Taxonomy as: Gypsic Aquisalids, loamy over sandy, mixed, thermic, whereas the application of the WRB system reveals the following: Fluvic Calcic Gypsic Sodic Gleyic Solonchaks (Loamic, Chloridic, Hypersalic).
Źródło:
Journal of Water and Land Development; 2023, 57; 197--203
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł

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