Irregularity may occur on the earth’s surface in the form of mountains due to the imperfection of the earth’s crust. To explore the influence of horizontally polarized shear waves on mountains, we considered the fluid-saturated porous medium over an orthotropic semi-infinite medium with rigid and soft mountain surfaces for wave propagation. The mountain surface is defined mathematically as a periodic function of the time domain. The physical interpretation of materials’ structure has been explained in rectangular Cartesian coordinate system originated at (...) the contact interface of layer and half-space. The displacement of the mountains has been derived by solving energy equations analytically. The influence of rigid and soft mountain surfaces on the phase velocity of shear waves has been demonstrated graphically. (shrink)

The aim of this paper is to investigate the flow of MHD mixed convection nanofluid flow under nonlinear heated due to an extending surface. The transfer of heat in nanofluid subject to a magnetic field and boundary conditions of convective is studied to obtain the physical meaning of the convection phenomenon. The governing partial differential equations of the boundary layer are reduced to ordinary differential equations considering a technique of the transformation of similarity. The transformed equations are solved numerically considering (...) the technique of an efficient numerical shooting applying the Runge–Kutta technique scheme from the fourth-fifth order. The results corresponding to the dimensionless speed, temperature, concentration profiles, and the Nusselt number reduced, and the Sherwood numbers are presented by figures to display the physical meaning of the phenomena. A comparison has been made between the obtained results with the previous results obtained by others and agrees with them if the new parameters vanish. The results obtained indicate the impacts of the nondimensional governing parameters, namely, magnetic field parameter M, Soret number Sr, heat source λ, thermal buoyancy parameter λ T, and solutal buoyancy parameter λ C on the flow, temperature, and concentration profiles being discussed and presented graphically. (shrink)

A total of 944 expressed sequence tags generated 2212 EST loci mapped to homoeologous group 1 chromosomes in hexaploid wheat. EST deletion maps and the consensus map of group 1 chromosomes were constructed to show EST distribution. EST loci were unevenly distributed among chromosomes 1A, 1B, and ID with 660, 826, and 726, respectively. The number of EST loci was greater on the long arms than on the short arms for all three chromosomes. The distribution of ESTs along chromosome arms (...) was nonrandom with EST clusters occurring in the distal regions of short arms and middle regions of long arms. Duplications of group 1 ESTs in other homoeologous groups occurred at a rate of 35.5%. Seventy-five percent of wheat chromosome 1 ESTs had significant matches with rice sequences, where large regions of conservation occurred between wheat consensus chromosome 1 and rice chromosome 5 and between the proximal portion of the long arm of wheat consensus chromosome 1 and rice chromosome 10. Only 9.5% of group 1 ESTs showed significant matches to Arabidopsis genome sequences. The results presented are useful for gene mapping and evolutionary and comparative genomics of grasses. (shrink)

A total of 1918 loci, detected by the hybridization of 938 expressed sequence tag unigenes from 26 Triticeae cDNA libraries, were mapped to wheat homoeologous group 4 chromosomes using a set of deletion, ditelosomic, and nulli-tetrasomic lines. The 1918 EST loci were not distributed uniformly among the three group 4 chromosomes; 41, 28, and 31% mapped to chromosomes 4A, 4B, and 4D, respectively. This pattern is in contrast to the cumulative results of EST mapping in all homoeologous groups, as reported (...) elsewhere, that found the highest proportion of loci mapped to the B genome. Sixty-five percent of these 1918 loci mapped to the long arms of homoeologous group 4 chromosomes, while 35% mapped to the short arms. The distal regions of chromosome arms showed higher numbers of loci than the proximal regions, with the exception of 4DL. This study confirmed the complex structure of chromosome 4A that contains two reciprocal translocations and two inversions, previously identified. An additional inversion in the centromeric region of 4A was revealed. A consensus map for homoeologous group 4 was developed from 119 ESTs unique to group 4. Forty-nine percent of these ESTs were found to be homoologous to sequences on rice chromosome 3, 12% had matches with sequences on other rice chromosomes, and 39% had no matches with rice sequences at all. Limited homology was found between wheat ESTs on homoeologous group 4 and the Arabidopsis genome. Forty-two percent of the homoeologous group 4 ESTs could be classified into functional categories on the basis of blastX searches against all protein databases. (shrink)

This report describes the rationale, approaches, organization, and resource development leading to a large-scale deletion bin map of the hexaploid wheat genome. Accompanying reports in this issue detail results from chromosome bin-mapping of expressed sequence tags representing genes onto the seven homoeologous chromosome groups and a global analysis of the entire mapped wheat EST data set. Among the resources developed were the first extensive public wheat EST collection. Described are protocols for sequencing, sequence processing, EST nomenclature, and the assembly of (...) ESTs into contigs. These contigs plus singletons were used for selection of distinct sequence motif unigenes. Selected ESTs were rearrayed, validated by 5′ and 3′ sequencing, and amplified for probing a series of wheat aneuploid and deletion stocks. Images and data for all Southern hybridizations were deposited in databases and were used by the coordinators for each of the seven homoeologous chromosome groups to validate the mapping results. Results from this project have established the foundation for future developments in wheat genomics. (shrink)

DaB fUr die Entwicklung der Phanomenologie Husserls nicht zuletzt auch,wissenschaftstheoretische' Motive ausschlaggebend waren, ist hinreichend bekannt. Umso mehr verwundert es, daB die Husserl-Rezeption sich diese Motive nur selten zueigen gemacht hat. Zwar sind in einer Reihe von Einzel­ wissenschaften, wie in der Literaturwissenschaft, der Sozialwissenschaft und besonders auch der Psychologie, phanomenologische Motive wirksam gewor­ den. Versuche einer ausdriicklichen wissenschaftskritischen Anwendung der Husserlschen Philosophie auf einzelwissenschaftliehe Theorien jedoch, wie sie z.B. Alfred Schiitz in seinem friihen Werk zur phanomenologischen Grundlegung der "verstehenden (...) Soziologie"l ansatzweise unternommen hat, sind rar. Freilich ging auch Husserl hier nieht eben mit gutem Beispiel voran. Auch er selbst hat seine wissenschaftstheoretische Programmatik nirgends einer ernsthaften Bewahrungsprobe unterzogen. Die vorliegende Untersuchung will diese Frage einer wissenschaftstheore­ tischen Anwendbarkeit der transzendentalen Phiinomenologie paradigmatisch im Hinblick auf die Problemstellungen der Geschiehtswissenschaft iiberprii­ fen. Was also kann die Phanomenologie fUr die Historik leisten? DaB sieh fiir eine solche Absieht gerade die geschichtstheoretischen Perspektiven in Hus­ serls Werk anbieten, hat vor allem zwei Griinde. (shrink)

On Sikh doctrines inunciated by Guru Nanak.

Pessimism over a democracy’s ability to produce good outcomes is as longstanding as democracy itself. On one hand, democratic theorists consider democracy to be the only legitimate form of government on the basis that it alone promotes or safeguards intrinsic values like freedom, equality, and justice. On the other, skepticism toward the ordinary citizen’s cognitive capacities remains a perennial concern. Qualms about the epistemic value of democracy have only been made more pertinent by a fundamental problem of deep epistemic disagreement (...) which underlies the post-truth phenomenon. I argue that the democratic theorists who have sought to defend democracy on epistemic grounds have thus far neglected such deep and intractable disagreements. Without addressing this oversight, the epistemic democrat will find that collective decision-making processes quickly become paralyzed and will not be able to yield the epistemic benefits they promise. Hence, the work for epistemic democrats is to recognize and take into account the ramifications of epistemic disagreements so as to make a stronger case for epistemic democracy. (shrink)

Context: Many recent research areas such as human cognition and quantum physics call the observer-independence of traditional science into question. Also, there is a growing need for self-reflexivity in science, i.e., a science that reflects on its own outcomes and products. Problem: We introduce the concept of second-order science that is based on the operation of re-entry. Our goal is to provide an overview of this largely unexplored science domain and of potential approaches in second-order fields. Method: We provide the (...) necessary conceptual groundwork for explorations in second-order science, in which we discuss the differences between first- and second-order science and where we present a roadmap for second-order science. The article operates mainly with conceptual differentiations such as the separation between three seemingly identical concepts such as Science II, Science 2.0 and second-order science. Results: Compared with first-order science, the potential of second-order science lies in 1. higher levels of novelty and innovations, 2. higher levels of robustness and 3. wider integration as well as higher generality. As first-order science advances, second-order science, with re-entry as its basic operation, provides three vital functions for first-order science, namely a rich source of novelty and innovation, the necessary quality control and greater integration and generality. Implications: Second-order science should be viewed as a major expansion of traditional scientific fields and as a scientific breakthrough towards a new wave of innovative research. Constructivist content: Second-order science has strong ties with radical constructivism, which can be qualified as the most important root/origin of second-order science. Moreover, it will be argued that a new form of cybernetics is needed to cope with the new problems and challenges of second-order science. (shrink)

Study of rationalism in Urdu literature.

On Sikh ethics; includes brief biographies of Sikh religious leaders.

Context: The journal Constructivist Foundations celebrates ten years of publishing articles on constructivist approaches, in particular radical constructivism. Problem: In order to preserve the sustainability of radical constructivism and regain its appeal to new generations of researchers, we set up a new course of action for and with the radical constructivist community to study its innovative potential. This new avenue is “second-order science.” Method: We specify two motivations of second-order science, i.e., the inclusion of the observer, and self-reflexivity that allows (...) second-order science to operate on the products of normal or first-order science. Also, we present a short overview of the contributions that we have collected for this inaugural issue on second-order science. Results: These six initial contributions demonstrate the potential of the new set of approaches to second-order science across several disciplines. Implications: Second-order science is believed to be a cogent concept in the evolution of science, leading to a new wave of innovations, novel experiments and a much closer relationship with current research in the cognitive neurosciences in particular, and with evolutionary and complexity theories in general. (shrink)

Context: Although second-order cybernetics was proposed as a new way of cybernetic investigations around 1970, its general status and its modus operandi are still far from obvious. Problem: We want to provide a new perspective on the scope and the currently available potential of second-order cybernetics within today’s science landscapes. Method: We invited a group of scholars who have produced foundational work on second-order cybernetics in recent years, and organized an open call for new approaches to second-order cybernetics. The accepted (...) contributions are discussed and mapped. We also investigate the relations between second-order cybernetics and second-order science. Results: We present a coherent outlook on the scope of second-order cybernetics today, identify a general methodology of science and show that second-order cybernetics can be used in a large number of disciplines that go well beyond purely scientific domains. These results are based on a new epistemic mode “from within,” which can be traced back directly to von Foerster. We also arrived at the conclusion that from its early years onwards second-order cybernetics was developed in two different ways, so that second-order cybernetics and second-order science operate in different domains. Implications: Both the coherent perspective of the scope of second-order cybernetics with a new five-part agenda and the outline for a general methodology of science based on a new epistemic mode that was created within and for second-order cybernetics demonstrate the growing importance of reflexivity in science, which, so far, has not been widely recognized. (shrink)