BackgroundOrgan donation has become one of the most effective ways to save lives and improve the quality of life for patients with end-stage organ failure. No previous studies have investigated the preferences for the different consenting options for organ donation in Egypt. This study aims to assess Egyptians’ preferences regarding consenting options for posthumous organ donation, and measure their awareness and acceptance of the Egyptian law articles regulating organ donation.MethodsA cross sectional study was conducted among 2743 participants over two years. (...) Each participant was required to rank eleven consenting options from 1 to 11, and to report his awareness and acceptance of the seven articles of the Egyptian law of organ donation.Results47% of the participants expressed willingness to donate their organs after death. This percentage increased to 78% when consenting options were explained to participants. “Informed consent by donor only” was the most preferred type of consent for one third of respondents. Awareness of the law articles regulating organ donation was relatively low ranging from 56% to 23%.ConclusionCurrently, around half of the Egyptian population agree to posthumous organ donation. This percentage could be increased significantly by raising the awareness about how the process of donation could be regulated and how the patient’s right of decision could be protected. (shrink)

BackgroundThe nursing profession requires ethical and legal regulations to guide nurses’ performance. Ethical climate plays a part in shaping nurses’ ethical practice. Therefore, ethico-legal aspects and ethical climate contribute to improving nurses’ ethical practice and competencies with reducing medical errors in hospital settings.ObjectiveThis study examined the effect of ethico-legal aspects and ethical climate on managing safe patient care and medical errors among nurses.Materials and methodsA cross-sectional correlational study was carried out on 548 nurses. Data were collected through self-administered questionnaires about (...) nurses’ knowledge in both ethical and legal aspects, ethical practice, competencies, ethical climate and experience with medical error.ResultsThe main sources of nurses’ knowledge of ethical and legal aspects were undergraduate lectures, job experience and colleagues. Nurses’ knowledge in both ethical and legal aspects, nurses’ ethical practice and competencies were insufficient. Nurses fairly perceived their ethical climate. Also, nurses experienced medical errors about 22.6% in their units. Nurses’ knowledge of ethical and legal aspects, as well as the ethical climate were positive predictors of inadequate nurses’ ethical practice and competencies. Additionally, nurses’ knowledge in both ethical and legal aspects, ethical climate and practice had a negative influence on the occurrence of medical errors.ConclusionEnhancing nurses’ knowledge in both ethical and legal aspects as well as ethical climate could significantly influence improving nurses’ ethical practice, competencies and reducing medical errors in the study units. Therefore, planning for enhancing the nurses’ ethico-legal learning and ethical climate seems to be mandatory. (shrink)

BackgroundWorkplace silence behavior is a social collective phenomenon. It refers to nurses choosing to withhold their ideas, opinions and concerns about critical issues in their workplace. Workpla...

The ternary xV2O5–(40 − x)Li2O–60B2O3 glass system, where x = 1, 2, 3, 4 and 6 mol%, was prepared by normal quenching. Ultrasonic velocities and attenuation were measured at room temperature using a pulse-echo technique. Various parameters, such as elastic moduli, micro-hardness, Poisson's ratio and Debye temperature, were determined from the measured densities and velocities. The composition dependence of these parameters, in addition to the glass-transition temperature, suggested that vanadium ions were incorporated into these glasses as a network modifier, resulting (...) in the reconversion of BO4 tetrahedra to BO3 triangles by the breaking of B–O–B linkages and the formation of nonbridging oxygens (NBOs). The outcome was a reduction in network connectivity and rigidity with increasing V2O5 content. The results are explained quantitatively in terms of fractal bond connectivity, average atomic volume, network dimensionality, packing density, number of network bonds per unit volume, cross-link density and atomic ring size. The Makishima and Mackenzie model appears to be valid for the studied glasses when the fate of BO4 tetrahedra and creation of NBOs are taken into account. (shrink)

This article attempts to study cost minimizing multi-objective fractional solid transportation problem with fuzzy cost coefficients c ˜ i j k r {\tilde{c}}_{ijk}^{r}, fuzzy supply quantities a ˜ i {\tilde{a}}_{i}, fuzzy demands b ˜ j {\tilde{b}}_{j}, and/or fuzzy conveyances e ˜ k {\tilde{e}}_{k}. The fuzzy efficient concept is introduced in which the crisp efficient solution is extended. A necessary and sufficient condition for the solution is established. Fuzzy geometric programming approach is applied to solve the crisp problem by defining membership (...) function so as to obtain the optimal compromise solution of a multi-objective two-stage problem. A linear membership function for the objective function is defined. The stability set of the first kind is defined and determined. A numerical example is given for illustration and to check the validity of the proposed approach. (shrink)

Fractional calculus is nowadays an efficient tool in modelling many interesting nonlinear phenomena. This study investigates, in a novel way, the Ulam–Hyers and Ulam–Hyers–Rassias stability of differential equations with general conformable derivative. In our analysis, we employ some version of Banach fixed-point theory. In this way, we generalize several earlier interesting results. Two examples are given at the end to illustrate our results.

Research on the nature of science and science education enjoys a longhistory, with its origins in Ernst Mach's work in the late nineteenthcentury and John Dewey's at the beginning of the twentieth century.As early as 1909 the Central Association for Science and MathematicsTeachers published an article – ‘A Consideration of the Principles thatShould Determine the Courses in Biology in Secondary Schools’ – inSchool Science and Mathematics that reflected foundational concernsabout science and how school curricula should be informed by them. Sincethen (...) a large body of literature has developed related to the teaching andlearning about nature of science – see, for example, the Lederman and Meichtry reviews cited below. As well there has been intensephilosophical, historical and philosophical debate about the nature of scienceitself, culminating in the much-publicised ‘Science Wars’ of recent time. Thereferences listed here primarily focus on the empirical research related to thenature of science as an educational goal; along with a few influential philosophicalworks by such authors as Kuhn, Popper, Laudan, Lakatos, and others. Whilenot exhaustive, the list should prove useful to educators, and scholars in otherfields, interested in the nature of science and how its understanding can berealised as a goal of science instruction. The authors welcome correspondenceregarding omissions from the list, and on-going additions that can be made to it. (shrink)

Researchers have raised concerns about teachers’ ability to embed nature of science in their science instruction, a complicated situation that is certainly impacted by the availability of adequate resources to assist K-12 science teachers. In light of the implementation of the ideas from the Framework for K-12 Science Education and the Next Generation Science Standards in the USA, this study sought to identify and evaluate resources aimed at guiding NOS instruction. A search of the National Science Teachers Association database for (...) Next Generation Science Standards -aligned instructional resources resulted in an analytical sample of eight lessons. All materials accompanying these lessons were analyzed for their representations of 10 NOS aspects. The evaluation of these materials revealed a prevalence of implicit, naïve representations in the sample lessons. Examination of the connections to NOS in these lessons leads to a set of recommendations to improve the quantity and quality of NOS representations in future NGSS-aligned instructional resources. The analytical approach used and the issues raised about the presentation and treatment of NOS in precollege lessons are of interest to the broader science education community. (shrink)

This paper investigates the objections that were raised by the philosopher ‘Abd al-La&tdotu;īf al-Baghdādī against al-&Hdotu;asan ibn al-Haytham’s geometrisation of place. In this line of enquiry, I contrast the philosophical propositions that were advanced by al-Baghdādī in his tract: Fī al-Radd ‘alā Ibn al-Haytham fī al-makān, with the geometrical demonstrations that Ibn al-Haytham presented in his groundbreaking treatise: Qawl fī al-Makān. In examining the particulars of al-Baghdādī’s fragile defence of Aristotle’s definition of topos as delineated in Book IV of the (...) Physics, which was rejected on mathematical grounds by Ibn al-Haytham, a special attention is also given to highlighting the systemic distinctions between the entities that are studied within the speculative physical doctrines of common sense and immediate experience, and the postulated ‘objects’ of scientific and mathematical research. (shrink)

The novel coronavirus disease is regarded as one of the most imminent disease outbreaks which threaten public health on various levels worldwide. Because of the unpredictable outbreak nature and the virus’s pandemic intensity, people are experiencing depression, anxiety, and other strain reactions. The response to prevent and control the new coronavirus pneumonia has reached a crucial point. Therefore, it is essential—for safety and prevention purposes—to promptly predict and forecast the virus outbreak in the course of this troublesome time to have (...) control over its mortality. Recently, deep learning models are playing essential roles in handling time-series data in different applications. This paper presents a comparative study of two deep learning methods to forecast the confirmed cases and death cases of COVID-19. Long short-term memory and gated recurrent unit have been applied on time-series data in three countries: Egypt, Saudi Arabia, and Kuwait, from 1/5/2020 to 6/12/2020. The results show that LSTM has achieved the best performance in confirmed cases in the three countries, and GRU has achieved the best performance in death cases in Egypt and Kuwait. (shrink)

Twitter integrates with streaming data technologies and machine learning to add new value to healthcare. This paper presented a real-time system to predict breast cancer based on streaming patient’s health data from Twitter. The proposed system consists of two major components: developing an offline building model and an online prediction pipeline. For the first component, we made a correlation between the features to determine the correlation between features and reduce the number of features from the Breast Cancer Wisconsin Diagnostic dataset. (...) Two feature selection algorithms are recursive feature elimination and univariate feature selection algorithms which are applied to features after correlation to select the essential features. Four decision trees, logistic regression, support vector machine, and random forest classifier have been used on features after correlation and feature selection. Also, hyperparameter tuning and cross-validation have been applied with machine learning to optimize models and enhance accuracy. Apache Spark, Apache Kafka, and Twitter Streaming API are used to develop the second component. The best model with the highest accuracy obtained from the first component predicts breast cancer in real time from tweets’ streaming. The results showed that the best model is the random forest classifier which achieved the best accuracy. (shrink)

Bringing together international research on nature of science representations in science textbooks, this unique analysis provides a global perspective on NOS from elementary to college level and discusses the practical implications in various regions across the globe. Contributing authors highlight the similarities and differences in NOS representations and provide recommendations for future science textbooks. This comprehensive analysis is a definitive reference work in science education.

The quality of the narrations of 'Abdullah b. Salih al-Misrî (d. 223/838), one of al-Bukhârî's famous teachers, in al-Jâmi al-Sahîh has been a matter of debate among hadîth scholars. Abdullah b. Salih, whose narrations are narrated by Abu Dâwûd, al-Tirmidhî and Ibn Mâjah, is an important figure whom al-Bukhârî interviewed and also narrated from him in his works such as al-Adab al-mufred, al-Kirâʾa Khalfa al-imâm and al-Târîkh al-kabîr. However, whether he narrated directly from him in al-Jâmi al-Sahîh has been a (...) matter of debate among the scholars of Hadith. Ismâ'îlî (d. 371/982) and al-Hâkim (d. 405/1014) claim that al-Bukhârî did not narrate any hadîth from him in his Sahîh, while al-Zaḥebî (d. 748/1347) and al-'Aynî (d. 855/1451) argue that he did. It is possible to say that this disagreement is due to two reasons. The first is that there are differences between the copies of the Sahîh, and the second is that al-Bukhârî mentioned some of the narrators in an incomplete form. In this study, we will investigate various copies of the Sahîh and focus on whether the person whose identity is mentioned as "Abdullah b. Sâlih", "Abdullah" and "Abû Sâlih" in them is really Abdullah b. Sâlih al-Misrî. In addition, we will touch upon the evidences relied upon by the muhaddithis who express an opinion on this issue in terms of narration and dirāyah, and we will also draw attention to how the sîgas of tahammul and âdâ used in the narrations should be understood. Finally, we will try to determine whether al-Bukhârî has made any tahrīj from 'Abdullah b. Salih in his Sahīh, and if so, for what purpose, i.e., for ihtijâj or istishhâd. (shrink)

This study focused on the identification problems of two-input single-output system with moving average noises based on unsupervised learning methods applied to the input signals. The input signal to the autoregressive moving average model is proposed to be arriving from a source with continuous technical and environmental changes as two separate featured input signals. These two input signals were grouped in a number of clusters using the K-means clustering algorithm. The clustered input signals were supplied to the model in an (...) orderly fashion from cluster-1 up to cluster-K. To ensure that the output signal can be best predicted from the input signal which in turn leads to selecting good enough model for its intended use, the magnitude-squared coherence measure is applied to the input/output signals in the cases of clustered and nonclustered inputs, which indicates best correlation coefficient when measured with clustered inputs. From collected input-output signals, we deduce a K-means clustering based recursive least squares method for estimating the parameter of autoregressive moving average system. The simulation results indicate that the suggested method is effective. (shrink)

Topic of quantum chaos has begun to draw increasing attention in recent years. So, to ensure the security of digital image, an image encryption algorithm based on combining a hyperchaotic system and quantum 3D logistic map is proposed. This algorithm is applied in four stages. Initially, the key generator builds upon the foundation of mean for any row or column of the edges of the plain image. Its output value is used to yield initial conditions and parameters of the proposed (...) image encryption scheme. Next, it diffuses the plain image by the random sequences generated by 3D hyperchaotic system, and the diffusion process is realized by implementing XOR operation. Then, the diffused image and chaotic sequences are produced by the 3D quantum chaotic logistic map, expressed as a quantum superposition state using density matrix which is a representation of the state of a quantum system, and finally the resulting quantum image is then confused and diffused simultaneously by a unitary matrix generated by logistic chaos using XNOR operation to obtain the final cipher image. Because of the dependence on the plain image, the algorithm can frustrate the chosen-plaintext and known-plaintext attacks. Simulation results and theoretical analysis verify that the presented scheme has high safety performance, a good encryption effect, and a large key space. The method can effectively resist exhaustive, statistical, and differential attacks. Moreover, the encryption time of the proposed method is satisfactory, and the method can be efficiently used in practice for the secure transmission of image information. (shrink)

Stemming from the realization of the importance of the role of explanation in the science classroom, the Next Generation Science Standards call for appropriately supporting students to learn science, argue from evidence, and provide explanations. Despite the ongoing emphasis on explanations in the science classroom, there seems to be no well-articulated framework that supports students in constructing adequate scientific explanations, or that helps teachers assess student explanations. Our motivation for this article is twofold: First, we think that the ways in (...) which researchers in science education have studied scientific explanation are, at best, leaves much to be desired and, at worst, simply incomplete. Second, we believe that research about the teaching and learning of explanation in science classrooms must be guided by explicit models or frameworks that specify elements involved in constructing explanations particularly applicable to science. More importantly, we think that the development of such models or guidelines should be based on theoretical and philosophical foundations. In order to develop these frameworks or guidelines, we first outline and clarify models of scientific explanation developed by philosophers of science over the last few decades. In the second section of this article, we present a more recent philosophical work on scientific explanation, the pragmatic approach to studying scientific explanations. This approach suggests a toolbox for analyzing scientists’ scientific explanations, which provides a useful instrument to science education. In Section 3, we discuss the ways by which the previous two sections are useful in developing a K-12 scientific explanation schema. Implications for future research on students’ explanations are discussed. (shrink)

On Islamic standards of basic needs of human beings.

La Misericordia de Dios lo abarca todo. Los atributos de Dios referidos a su Misericordia y Munificencia vienen reflejados en los nombres Ar-Rahman y Ar-Rahim. El primero es la cualidad exclusiva de Dios y se refiere a las gracias sobrenaturales y el segundo a las gracias naturales. En cuanto al siervo del Misericordioso. Abd Ar-Rahman, resume este nombre y es una gracia para todo el mundo en general. Abd Ar-Rahim, el siervo del Generoso, ejemplifica a la persona piadosa que practica (...) la compasión pero sobre todo con aquellos en los que Dios se complace.The Mercy of God includes all His creatíon. The Divine Qualities refered to the Compassionate and the Merciful are reflected in the names Ar-Rahman and Ar-Rahim. The first one is an exclusiva quality of God and it is refereá to the supernatural Grace and the second one to the natural Grace. As for the servant of the Compassionate epitomises this name and is a mercy to all the world in general. 'Abd Ar-Rahim, the servant of the Merciful exemplifies the pious that bestows his mercy particularly upon those with whom God is pleased. (shrink)

Education; Islamic ethics; Arab countries.

Güzellik ve sanat iç içe geçmiş iki kavramdır. Bir bakıma güzellik, sanatın özüdür denilebilir. Her sanat dalında olduğu gibi hat sanatında da güzeli arama arzusu ve eşsiz eserler ortaya koyma çabası, hattatları sabırla çalışmaya ve kendi sınırlarını zorlamaya sevk etmiştir. Bir kitap sanatı olan hüsn-i hattın kelime manasının “güzel yazı” olmasına mukabil, daha iyisini yazmak uğruna harcanan çaba yorucu ve zahmetlidir, ancak sabırla çalışan elbette ki karşılığını alır. Başka bir deyişle “Muhakkak ki Allah güzeldir, güzeli sever!” hadis-i şerifi ışığında bu (...) sanata gönül verenler, yazıyı daha muntazam yazma hususunda büyük ölçüde gayret gösterirler. Kişinin muntazam yazmayı başarması ise, sistematik çalışmasına bağlıdır. Yazıyı kaidelerine uygun ve ölçülü yazabilmek bıkmadan usanmadan, karamsarlığa kapılmadan çalışmakla mümkündür. Bu sebeple gerek öğrenme aşamasında ve gerekse sonrasında, harfler defalarca çalışma kâğıdına yazılarak el melekesi artırılır. Kelimeler ve harfler kâğıda kimi zaman noktalanıp ölçülendirilerek, kimi zaman da noktalanmadan yazılır. Talim amaçlı yapılan bu çalışmalar, başka bir deyişle karalamalar, hat sanatının temeli niteliğindedir. Arap alfabesiyle yazılan ve “karalama” adı verilen el alıştırmaları yazıyla uğraşan kişinin o an irticalen elinden çıkan harf veya kelimelerden oluşur ve çoğu zaman bir anlam ifade etmez. Bu çalışmanın amacı, karalamaların estetik unsurlarını ele almak ve zaman içerisinde uğradığı değişime mercek tutmaktır. Hattatların bu özgür yorumları gün geçtikçe daha fazla önemsenmekte ve hayranlık uyandırmaktadır. Harf bünyesini oluşturan kaidelerin dışında satır ve sınırlara bağlı kalmadan yazılan bu yazılar kendi içinde bir kompozisyon oluşturmakta ve çoğu zaman yazan kişiyi dahi hayrete düşürecek özgün çalışmalar ortaya çıkabilmektedir. (shrink)

The basic methodology of rough set theory depends on an equivalence relation induced from the generated partition by the classification of objects. However, the requirements of the equivalence relation restrict the field of applications of this philosophy. To begin, we describe two kinds of closure operators that are based on right and left adhesion neighbourhoods by any binary relation. Furthermore, we illustrate that the suggested techniques are an extension of previous methods that are already available in the literature. As a (...) result of these topological techniques, we propose extended rough sets as an extension of Pawlak’s models. We offer a novel topological strategy for making a topological reduction of an information system for COVID-19 based on these techniques. We provide this medical application to highlight the importance of the offered methodologies in the decision-making process to discover the important component for coronavirus infection. Furthermore, the findings obtained are congruent with those of the World Health Organization. Finally, we create an algorithm to implement the recommended ways in decision-making. (shrink)

The problem of finding optimal sampling schemes has been resolved in two models. The novelty of this study lies in its cost efficiency, specifically, for the applied problems with expensive sampling process. In discussed models, we show that some observations counteract other ones in prediction mechanism. The autocovariance function of underlying process causes mentioned result. Our interesting result is that, although removing neutralizing observations convert sampling scheme to nonredundant case, it causes to worse prediction. A simulation study confirms this matter, (...) too. (shrink)

Punishment as part of modern criminal law theory -- General purposes of punishment -- General considerations of punishment -- General structure of doctrinal sentencing -- Physical punishments -- Economic punishments.

On religious life in Islam; conduct of life for Muslims and on Islamic ethics.