bluuebunny/crossref_metadata_2025 huggingface dataset:
A-priori bounds for quasilinear problems in critical dimension
Authors: Romani Giulio
Published: September 2019

We establish uniform a-priori bounds for solutions of the quasilinear problems

$$\begin{array}{} \displaystyle \begin{cases} -{\it\Delta}_Nu=f(u)\quad&\mbox{in }{\it\Omega},\\ u=0\quad&\mbox{on }{\partial{\it\Omega}}, \end{cases} \end{array}$$

whereΩ⊂ ℝNis a bounded smooth convex domain andfis positive, superlinear and subcritical in the sense of the Trudinger-Moser inequality. The typical growth offis thus exponential. Finally, a generalisation of the result for nonhomogeneous nonlinearities is given. Using a blow-up approach, this paper completes the results in [1, 2], extending the class of nonlinearities for which the uniform a-priori bound applies.
Periodic solutions for second order differential equations with indefinite singularities
Authors: Lu Shiping , Yu Xingchen
Published: September 2019

In this paper, the problem of periodic solutions is studied for second order differential equations with indefinite singularities

$$\begin{array}{} \displaystyle x''(t)+ f(x(t))x'(t)+\varphi(t)x^m(t)-\frac{\alpha(t)}{x^\mu(t)}+\frac{\beta(t)}{x^y (t)}=0, \end{array}$$

wheref∈C((0, +∞), ℝ) may have a singularity at the origin, the signs ofφandαare allowed to change,mis a non-negative constant,μandyare positive constants. The approach is based on a continuation theorem of Manásevich and Mawhin with techniques of a priori estimates.
Concentration, Brine Salinity and Temperature effects on Xanthan Gum Solutions Rheology
Authors: de Moura Mateus Ribeiro Veiga , Moreno Rosângela Barros Zanoni Lopes
Published: September 2019

Xanthan gum is a biopolymer used in several different industries for a variety of applications. In the Petroleum Industry, xanthan gum has been applied in Enhanced Oil Recovery (EOR) methods for mobility control due to its Non-Newtonian rheological behavior, relative insensitivity to salinity and temperature compared to other conventional synthetic polymers, as well as its environmentally-friendly characteristics. As challenging reservoir conditions arise, candidate polymers should meet the screening factors for high salinity, high temperatures and heterogeneous reservoirs. This paper aims to evaluate the effects of temperature and monovalent salts on the rheological behavior of xanthan gum for Enhanced Oil Recovery purposes. We tested polymer solutions with brine salinities of 20,000/110,000/220,000 ppm of Sodium Chloride in a rheometer at temperatures of 23, 50, and 77°C. The results acquired showed that temperature plays a key role in viscosity and salinity protected the solution viscosity against negative thermal effects, unusually a turning point is observed where the increase in the monovalent salt content enhanced the polymeric solution viscosity. Such investigations coupled with a detailed discussion presented in the paper contribute to understand critical aspects of xanthan gum and its capability to provide basic requirements that fit desired screening factors for EOR.
Shear thinning and thickening of cemented paste backfill
Authors: Yang Liuhua , Wang Hongjiang , Wu Aixiang , Li Hong , Tchamba Arlin Bruno , Bier Thomas A.
Published: September 2019

Cemented paste backfill (CPB) is considered to be a concentrated suspension in which tailings are bonded together by the hydraulic binder and water, and it has a high solid volume concentration (≥50 vol.%). Although the shear thinning and thickening of CPB has been extensively reported in literature, the shear history effects have been ignored in previous studies. In this paper, by using rheometer and Focused Beam Reflectance Measurement, the relationship between the rheological properties and microstructure of the paste under different shear histories was studied. The results have shown that at a low shear rate, CPB revealed shear thinning, low yield stress and low index parameters; while exhibited shear thickening, high yield stress and high consistency index when at high shear rates of shear history. This agreed with the general trends shown in the FBRM analysis. It was proposed that the action of shear is beneficial to particle dispersion, whereas a high shear rate history tends to promote the aggregation of particles. It was revealed that both shear thinning and thickening of paste are related to the situation of particles (flocculation, dispersion and aggregation), and shear history effects play an important role in rheological properties of CPB.
Perturbed locations and linear stability of collinear Lagrangian points in the elliptic restricted three body problem with triaxial primaries
Authors: Rahoma Walid Ali , Masoud Akram , Abd El-Salam Fawzy Ahmed , Khattab Elamira Hend
Published: September 2019

This paper aims to study the effect of the triaxiality and the oblateness as a special case of primaries on the locations and stability of the collinear equilibrium points of the elliptic restricted three body problem (in brief ERTBP). The locations of the perturbed collinear equilibrium points are first determined in terms of mass ratio of the problem (the smallest mass divided by the total mass of the system) and different concerned perturbing factors. The difference between the locations of collinear points in the classical case of circular restricted three body problem and those in the perturbed case is represented versus mass ratio over its range. The linear stability of the collinear points is discussed. It is observed that the stability regions for our model depend mainly on the eccentricity of the orbits in addition to the considered perturbations.
Equilibria and orbits in the dynamical environment of asteroid 22 Kalliope
Authors: Jiang Yu , Li Hengnian
Published: September 2019

This paper studies the orbital dynamics of the potential of asteroid 22 Kalliope using observational data of the irregular shape. The zero-velocity surface are calculated and showed with different Jacobian values. All five equilibrium points are found, four of them are outside and unstable, and the other one is inside and linearly stable. The movement and bifurcations of equilibrium points during the variety of rotation speed and density of the body are investigated. The Hopf bifurcations occurs during the variety of rotational speed from ω=1.0ω
0 to 0.5ω
0, and the Saddle-Node bifurcation occurs during the variety of rotational speed from ω=1.0ω
0 to 2.0ω
0. Both unstable and stable resonant periodic orbits around Kalliope are coexisting. The perturbation of an unstable periodic orbit shows that the gravitational field of Kalliope is strongly perturbed.
Solar observations at the Coimbra Astronomical Observatory
Authors: Lourenço Ana , Carvalho Sara , Barata Teresa , Garcia Adriana , Carrasco Víctor , Peixinho Nuno
Published: September 2019

In 2020, the Geophysical and Astronomical Observatory of the University of Coimbra will celebrate the 95th anniversary of its first spectroheliographic observation. Keeping a daily service of solar observations since then, making almost a century, led to one of the largest continuous solar data collections in the world. This long–term solar database is essential for studies where solar activity is involved. This work reviews the development of synoptic observations made at the Observatory of Coimbra since 1925 and presents a summary of some of the principal stages of the Observatory’s history since its founding in 1772. We refer the main technical improvements and present some perspectives for the near future. One of the most significant upgrades was the installation of a CCD camera in 2007. The transition from photographic emulsion to digital recording methods allowed the development of image analysis algorithms to process solar images and improved data sharing with other institutions. This upgrade enabled also to carry–out modern climate and space weather studies. This valuable advancement makes it possible to create a new catalogue of solar observations to be published in the future.
Integral membrane protein expression of human CD25 on the cell surface of HEK293 cell line: the available cellular model of CD25 positive to facilitate in vitro developing assays
Authors: Dehbashi Moein , Hojati Zohreh , Motovali-bashi Majid , Ganjalikhani-Hakemi Mazdak , Shimosaka Akihiro
Published: September 2019

Typically, CD25 is expressed on the cellular surface of regulatory T (Treg) cells. These cells are significant in regulating the self-tolerance and also preventing the immune system from attacking a person’s own tissues and cells. They promote the cancer progression by playing an important role in evading the immune system. Thus, the experimental procedures was aimed to clone and express human CD25 in HEK293 cell line, as the available cellular model, for the purpose of developing assays to facilitate and enhance the studies on an available CD25 positive cell. The secondary RNA structure of CD25 was evaluated by in silico analysis. Then, cDNA of human CD25 were synthesized from isolated total mRNA of cultured and stimulated PBMCs from blood donors. After cloning the cDNA of CD25 into a pcDNA3.1(+) plasmid, using the effective transfection of the recombinant pcDNA3.1(+) in HEK293, qRT-PCR and flow cytometry methods were used to quantitatively evaluate CD25 transcripts and protein level. There was a 4.8 fold increase in transcripts and a 76.2% increase in protein levels of CD25 when comparing the transfected and control cell lines. The genetically engineered HEK293 cell line expressing Treg cell surface marker of CD25 was introduced in this study for the first time. This cell line can be used to overcome the problematic issues for studying Treg cells including low population of Tregs in peripheral blood, low recovery methods for Treg isolation, time-consuming and non-cost benefit methods in the conditions of in vitro cell culture experiments for the studies focused on the binding of IL-2 to CD25.
Effective brain connectivity estimation between active brain regions in autism using the dual Kalman-based method
Authors: Rajabioun Mehdi , Motie Nasrabadi Ali , Shamsollahi Mohammad Bagher , Coben Robert
Published: September 2019

Brain connectivity estimation is a useful method to study brain functions and diagnose neuroscience disorders. Effective connectivity is a subdivision of brain connectivity which discusses the causal relationship between different parts of the brain. In this study, a dual Kalman-based method is used for effective connectivity estimation. Because of connectivity changes in autism, the method is applied to autistic signals for effective connectivity estimation. For method validation, the dual Kalman based method is compared with other connectivity estimation methods by estimation error and the dual Kalman-based method gives acceptable results with less estimation errors. Then, connectivities between active brain regions of autistic and normal children in the resting state are estimated and compared. In this simulation, the brain is divided into eight regions and the connectivity between regions and within them is calculated. It can be concluded from the results that in the resting state condition the effective connectivity of active regions is decreased between regions and is increased within each region in autistic children. In another result, by averaging the connectivity between the extracted active sources of each region, the connectivity between the left and right of the central part is more than that in other regions and the connectivity in the occipital part is less than that in others.
Predicting academic success through students’ interaction with Version Control Systems
Authors: Guerrero-Higueras Ángel Manuel , DeCastro-García Noemí , Rodriguez-Lera Francisco Javier , Matellán Vicente , Conde Miguel Ángel
Published: September 2019

Version Control Systems are commonly used by Information and communication technology professionals. These systems allow monitoring programmers activity working in a project. Thus, Version Control Systems are also used by educational institutions. The aim of this work is to evaluate if the academic success of students may be predicted by monitoring their interaction with a Version Control System. In order to do so, we have built a Machine Learning model which predicts student results in a specific practical assignment of the Operating Systems Extension subject, from the second course of the degree in Computer Science of the University of León, through their interaction with a Git repository. To build the model, several classifiers and predictors have been evaluated. In order to do so, we have developed Model Evaluator (MoEv), a tool to evaluate Machine Learning models in order to get the most suitable for a specific problem. Prior to the model development, a feature selection from input data is done. The resulting model has been trained using results from 2016–2017 course and later validated using results from 2017–2018 course. Results conclude that the model predicts students’ success with a success high percentage.
Modeling concepts and their relationships for corpus-based query auto-completion
Authors: Rossiello Gaetano , Caputo Annalina , Basile Pierpaolo , Semeraro Giovanni
Published: September 2019

Query auto-completion helps users to formulate their information needs by providing suggestion lists at every typed key. This task is commonly addressed by exploiting query logs and the approaches proposed in the literature fit well in web scale scenarios, where usually huge amounts of past user queries can be analyzed to provide reliable suggestions. However, when query logs are not available, e.g. in enterprise or desktop search engines, these methods are not applicable at all. To face these challenging scenarios, we present a novel corpus-based approach which exploits the textual content of an indexed document collection in order to dynamically generate query completions. Our method extracts informative text fragments from the corpus and it combines them using a probabilistic graphical model in order to capture the relationships between the extracted concepts. Using this approach, it is possible to automatically complete partial queries with significant suggestions related to the keywords already entered by the user without requiring the analysis of the past queries. We evaluate our system through a user study on two different real-world document collections. The experiments show that our method is able to provide meaningful completions outperforming the state-of-the art approach.
Moment Problems in Hereditary Function Spaces
Authors: Vasilescu Florian-Horia
Published: September 2019

We introduce a concept of hereditary set of multi-indices, and consider vector spaces of functions generated by families associated to such sets of multi-indices, called hereditary function spaces. Existence and uniquenes of representing measures for some abstract truncated moment problems are investigated in this framework, by adapting the concept of idempotent and that of dimensional stability, and using some techniques involving C*-algebras and commuting self-adjoint multiplication operators.
Modelling of Thermodynamic Pressure – Composition – Temperature Relationships in the Systems of Metallic Hydride Forming Materials with Gaseous Hydrogen Using C++ Software
Authors: Moropeng Mapula Lucey , Kolesnikov Andrei , Lototskyy Mykhaylo , Mavhungu Avhafunani
Published: September 2019

In this paper, the solution of the Lacher model describing the relationship between the Pressure – Composition, and Temperature (PCT diagrams) of AB5 type metal-hydrides (LaNi4.8Sn0.2, LmNi4.91Sn0.15, LaNi4.5Al0.5) for hydrogen storage using C ++ platform, with the help of a numerical method of nonlinear equation, Newton-Raphson method is presented. This study focuses on the development of a C ++ code to describe the iteration of Newton-Raphson for application in Hydrogen to Metal-Hydride systems.
When Students Design University: a Case Study of Creative Interdisciplinarity between Design Thinking and Humanities
Authors: Molinari Alessandra , Gasparini Andrea Alessandro
Published: September 2019

This paper addresses the issue of how to enhance student participation in university governance. This issue is approached by taking into account the growing pressures of the European Commission’s modernization agenda on the educational policies of the European Higher Education Area, and by focusing on the way these pressures affect students’ conceptions of themselves and of the mission of higher education. The thesis presented in this paper is that design thinking and the humanities share a common epistemological core that enables them, if applied in educational settings, to play a major role in fostering students’ trust in their governance skills and in their ability to influence educational policies through a creative mindset and a deeper comprehension of the stakes in present-day higher education. An experimental workshop combining design thinking with the humanities and with the constructivist approach of student-centered learning was held within a course in a humanities bachelor program on the basis of a heuristic framework developed through an interdisciplinary research process. This process was conducted according to the principles of design and hermeneutics. The outcomes of the workshop in terms of the participants’ enhanced self-confidence and decisional skills validate the thesis of this study.
Shedding Light on the Convoluted Terrain of Differentiated Instruction (DI): Proposal of a DI Taxonomy for the Heterogeneous Classroom
Authors: Pozas Marcela , Schneider Christoph
Published: September 2019

Student heterogeneity is not limited to performance, but encompasses cultural background, language competence, learning styles, and motivation. Thus, heterogeneity inherently changes the demands placed on teachers and requires them to practice differentiated instruction (DI). However, existing DI frameworks tend to describe single exemplary DI practices and widely lack an empirical view. Thus, these frameworks may provide little help to classroom teachers when it comes to the question of how or by which instructional arrangements they can address student heterogeneity in their everyday classroom teaching. In an attempt to bridge the gap between educational theory and everyday instructional practice, this theoretical paper focusing on differentiation within secondary school education proposes a comprehensive taxonomy of the DI practices known in the literature and practice. Outlines for future research on DI are discussed.
Curves on Segre threefolds
Authors: Ballico Edoardo , Chung Kiryong , Huh Sukmoon
Published: September 2019

We study locally Cohen–Macaulay curves of low degree in the Segre threefold

ℙ
1

×

ℙ
1

×

ℙ
1

{\mathbb{P}^{1}\times\mathbb{P}^{1}\times\mathbb{P}^{1}}

and investigate the irreducible and connected components, respectively, of the Hilbert scheme of them.
We also apply the similar argument to the Segre threefold

ℙ
2

×

ℙ
1

{\mathbb{P}^{2}\times\mathbb{P}^{1}}

.
Outlook for modified wood use and regulations in circular economy
Authors: Heräjärvi Henrik , Kunttu Janni , Hurmekoski Elias , Hujala Teppo
Published: September 2019

Circular economy may play a key role in the future success of modified wood products. The European Union (EU) aims toward a circular economy, i.e. increasing resource efficiency by waste minimization in production processes, cascade uses of materials, elimination of landfill wastes, and maximizing the value of raw materials. The policy has great expected impact across all sectors, and will influence countries with strong wood modification industries, such as Finland, Germany, Norway, and the Netherlands. It also means considerable economic efforts and sets transformation challenges to the societies and industries. Challenges have country-wise differences depending on production structure, environmental circumstances, local policies and regulations, as well as economic resources. This paper is an outlook of the renewed waste legislation in the EU, based on which it assesses the possible impacts of circular economy development on the future of wood modification. One of the key indicators for resource efficiency is € kg−1, which allows pursuing increased efficiency by minimizing material input (and waste) and/or by maximizing the value. In the case of modified wood, both of these approaches may be considered market opportunities, while the key challenge and the consequent need for action relate to improved waste management.
PV-Battery Hybrid System with Less AH Capacity for Standalone DC Loads
Authors: Kolakaluri Vinay Kumar , Vyjayanthi C. , Mikkili Suresh
Published: September 2019

Partial Shading Condition (PSC) is one of the key issues faced by Solar Photovoltaic (PV) systems. PSCs mainly occur due to clouds, shadows of trees/buildings, dust and so on. During the PSC, the shaded PV module acts like a sink and absorbs the power from highest irradiated modules in a string and leads to hotspot. This situation is highly vulnerable and has to be avoided. Bypass diodes are used in series configured PV modules to overcome the hotspot effect caused due to PSC. However, the use of bypass diodes leads to multiple peaks in the Power-Voltage (P-V) graph of a PV array. One among them is Global peak point, where PV array needs to operate under PSC. In such a case, some amount of power generated by the shaded modules gets wasted, which will lead to poor performance and efficiency of the overall system. Moreover, for standalone DC load applications an auxiliary supply also required to provide reliable supply to the load during night times and PSC. Normally, batteries are used in standalone systems as an auxiliary supply. To control the charging and discharging process of battery a bi-directional DC-DC converter is used as a charge/discharge controller. The amount of power that is being charged/discharged by batteries depends upon the load requirement and solar power availability. Under PSC, due to lack of extraction of PV power from shaded modules, batteries have to supply the deficient power to the load. This situation forces to increase the AH capacity of the battery to provide reliable supply. In this research article PV-Battery Hybrid system is proposed to improve the performance of PV under varying irradiance and load conditions with reduced AH capacity of battery for standalone DC loads. The performance assessment of proposed topology has been carried out with the comparison of percentage improvement in power extraction, percentage reduction in the average current consumption of battery and SoC delivered by battery with conventional methodologies of bypass diode and proposed methodology under PSC. The assessment is carried out on MATLAB/SIMULINK and results are presented.
Real Time Simulation of Modified Bias Based Load Disturbance Rejection Controller for Frequency Regulation of Islanded Micro-Grid
Authors: Kumar Badal , Adhikari Shuma , Datta Subir , Sinha Nidul
Published: September 2019

The paper presents a real time modelling of self-reliant isolated grid comprising both governable and ungovernable sources. The frequency of this system must be maintained to its desired value by reducing its deviation occurred when there is a mismatch between the load demand and the actual power generation. In order to achieve it, the actual power output of the micro-grid is required to regulate. Therefore, an attempt is made in this paper to design a modified bias (MB) with LDR (load disturbance rejection) based PID (proportional integral derivative) Controller and it can also be called droop based controller (DBC). Simulation of the micro-grid system with proposed MB-LDR based control scheme is successfully done in Real Time Simulation platform using the digital simulator of OPAL-RT OP4510. Simulation results of the system for different conditions are presented and analysis is given in details. Thereafter, comparative performance of the results obtained using proposed MB-LDR based controller with that of LDR and classical controllers is made. Results show that the proposed MB-LDR based controller gives better response as compare to other two methods in terms of peak transient deviation, settling time and number of oscillations.
Solvable groups whose character degree graphs generalize squares
Authors: Lewis Mark L. , Meng Qingyun
Published: September 2019

Let G be a solvable group, and let

Δ
⁢

(
G
)

{\Delta(G)}

be the character degree graph of G.
In this paper, we generalize the definition of a square graph to graphs that are block squares.
We show that if G is a solvable group so that

Δ
⁢

(
G
)

{\Delta(G)}

is a block square, then G has at most two normal nonabelian Sylow subgroups.
Furthermore, we show that when G is a solvable group that has two normal nonabelian Sylow subgroups and

Δ
⁢

(
G
)

{\Delta(G)}

is block square, then G is a direct product of subgroups having disconnected character degree graphs.
Double variants in TSHR and DUOX2 in a patient with hypothyroidism: case report
Authors: Sasivari Zerin , Szinnai Gabor , Seebauer Britta , Konrad Daniel , Lang-Muritano Mariarosaria
Published: September 2019

Thyroid dyshormonogenesis (TDH) is characterized by the defective synthesis of thyroid hormones. We present a patient with congenital hypothyroidism (CH) who presented in newborn screening with elevated serum thyroid-stimulating hormone (TSH), decreased free thyroxine (fT4) and increased thyroglobulin (Tg) concentrations. Ultrasound scan revealed a properly structured thyroid gland. Treatment with L-thyroxine was initiated. At the age of 2 years, thyroxine replacement was stopped. The patient remained untreated until 6 years of age when TSH levels progressively increased and L-thyroxine treatment was restarted at a dose of 12.5 μg/day. Genetic analysis revealed a double heterozygosity for likely pathogenic variants of dual oxidase 2 (DUOX2) and thyroid stimulating hormone receptor (TSHR). Both genes were earlier shown to be associated with CH. In a literature review, our patient was compared to previously published patients with similar clinical characteristics, and a good genotype-phenotype correlation was identified.
Game between Arch-enemies: An Interpretation of the Free and Harmonious Play of Faculties
Authors: Fung Hin-Fung
Published: September 2019

The aim of this paper is to give an interpretation of the free and harmonious play of faculties. The dominant interpretations focus on how the imagination is free from the determination of understanding, but say little about the harmony that can exist between imagination and understanding; thus, in this paper an attempt is made to account for the free and harmonious relationship between these two faculties. Some of Kant’s lectures are reviewed to show the inclinations of the power of imagination and understanding, respectively. As the power of imagination is inclined towards making many representations, understanding is necessary to truncate the multitudes of those representations, so that unity of the representation is achievable. Taking inspiration from the traditional board game of Go, it is possible to draw an interpretation of the play of faculties that takes into consideration both the freedom and the harmony that is present within the play.
Aesthetic Judgment as Parasitic on Cognition
Authors: Halper Aaron
Published: September 2019

When we judge something to be beautiful, do we identify an inherent feature of the object, or only our subjective response to it? This paper argues that, for Kant, pure aesthetic judgment occupies a middle ground. Such judgments are based upon affective responses to our own cognitive faculties. Thus, pure aesthetic judgment is subjective insofar as it concerns our feeling ourselves to be engaged in a certain task; it is objective insofar as the task we are engaged in is cognition of an object, and the faculties that we are feeling to be at work are the cognitive faculties of the understanding and the imagination. This paper locates this interpretation in the text of the Critique of Aesthetic Judgment in the third Critique and uses it to make sense of many otherwise opaque features of Kant’s account of pure aesthetic judgment.
Performative versus Orientational Hermeneutics. Gadamer’s Criticism of Kant’s Sensus Communis and its Hermeneutical Rehabilitation by Makkreel
Authors: Ruta Marcello
Published: September 2019

In a series of works published over the last thirty years, Rudolf Makkreel accomplished what can be called a hermeneutical rehabilitation of Kant’s Critique of Judgment. Such a rehabilitation has been formulated in explicit opposition to the negative hermeneutical image of Kant’s aesthetics which originated in the work of Hans-Georg Gadamer, and according to which the subjectivization of aesthetics perpetrated by Kant reduced aesthetic judgments to a mere communication of feelings, sanctioning thereby their hermeneutical irrelevance. In this essay I do not intend to evaluate the legitimacy of Makkreel’s considerations about the hermeneutical importance of Kant’s Third Critique. Rather, I aim to question the pertinence of those considerations for Gadamer’s criticism of Kant, specifically in relation to the notion of sensus communis, which plays a central role both in Gadamer’s and Makkreel’s analyses.
Kant on Common-sense and the Unity of Judgments of Taste
Authors: Stoner Samuel A.
Published: September 2019

Though the notion of common-sense (Gemeinsinn) plays an important role in Kant’s aesthetic theory, it is not immediately clear what Kant means by this term. This essay works to clarify the role that common-sense plays in the logic of Kant’s argument. My interpretive hypothesis is that a careful examination of the way common-sense functions in Kant’s account of judgments of taste can help explain what this notion means. I argue that common-sense names the capacity to discern the relation between the cognitive faculties by means of a feeling, and I conclude that this understanding of common-sense lays the groundwork for an account of the unity of judgments of taste. I conclude that attending to Kant’s notion of common-sense is especially important because it highlights the anthropological significance of Kant’s account of beauty.
Kant’s Account of the Sublime as Critique
Authors: Zuckert Rachel
Published: September 2019

Kant’s account of the sublime in the Critique of Judgment has been extremely influential, prompting extensive discussion of the psychology, affect, moral significance, and relevance to artistic representation of the sublime on his provocative view. I focus instead on Kant’s account of the mathematical sublime in connection to his theoretical critical project, namely his attempt to characterize human cognitive powers and to limit human pretensions to knowledge of the supersensible. I argue, first, that his account of the psychology of the sublime is designed to explain not just its affective character (its displeasure-pleasure), but also to address challenges concerning the coherence of an experience of something as transcending one’s cognitive abilities. Thereby, I argue moreover, Kant provides an alternative, demystifying account of mystical experiences, in which humans might take themselves to intuit that which is beyond human understanding or reason, and thus to claim that they have special cognitive access to the supersensible, transcending the limits Kant claims to establish for human cognition. Kant’s account of the mathematical sublime is not merely so reductive of mystical experience, however; it also, I suggest, describes the aesthetic of Kantian critique itself.
Cross-linguistic evidence for cognitive universals in the noun phrase
Authors: Martin Alexander , Ratitamkul Theeraporn , Abels Klaus , Adger David , Culbertson Jennifer
Published: September 2019

Noun phrase word order varies cross-linguistically, however, two distributional asymmetries have attracted substantial attention. First, the most common orders place adjectives closest to the noun, then numerals, then demonstratives (e.g., N-Adj-Num-Dem). Second, exceptions to this are restricted to post-nominal position (e.g., N-Dem-Num-Adj, but not, for instance, Adj-Num-Dem-N). These observations have been argued to reflect constraints on cognition. Here we report on two experiments, providing support for this claim. We taught English- and Thai-speaking participants artificial languages in which the position of modifiers relative to the noun differed from their native order (post-nominal position in English, pre-nominal in Thai). We trained participants on single-modifier phrases, and asked them to extrapolate to multiple modifier phrases. We found that both populations infer relative orders of modifiers that conform to the tendency for closest proximity of adjectives, then numerals, then demonstratives. Further, we show that Thai participants, learning pre-nominal modifiers, exhibit a stronger such preference. These results track the typology closely and are consistent with the claim that noun phrase word order reflects properties of human cognition. We discuss future research needed to rule out alternative explanations for our findings, including prior language experience.
Strong coupling with directional absorption features of Ag@Au hollow nanoshell/J-aggregate heterostructures
Authors: Sun Linchun , Li Ze , He Jingsuo , Wang Peijie
Published: September 2019

Tunable plasmon-exciton coupling is demonstrated at room temperature in hybrid systems consisting of Ag@Au hollow nanoshells (HNSs) and J-aggregates. The strong coupling depends on the exciton binding energy and the localized surface plasmon resonance strength, which can be tuned by changing the thickness of the Ag@Au HNS. An evident anticrossing dispersion curve in the coupled energy diagram of the hybrid system was observed based on the absorption spectra obtained at room temperature. In this paper, strong coupling was observed twice (first at lower wavelength and then also at a higher wavelength) via a single preparation process of the Ag@Au HNS system. The first Rabi splitting energy (ħΩ) is 225 meV. Then, the extinction spectra of the bare Ag@Au HNS and the Ag@Au HNS-J-aggregate hybrid system were reproduced by numerical simulations using the finite-difference time domain method, which were in good agreement with the experimental observations. We attributed the strong coupling of the new shell hybrid system to the reduced local surface plasmon (LSP) mode volume of the Ag@Au HNS. This volume is about 1021.6 nm3. The features of the Ag@Au HNS nanostructure with a small LSP mode volume enabled strong light-matter interactions to be achieved in single open plasmonic nanocavities. These findings may pave the way toward nanophotonic devices operating at room temperature.
Crystal structure of 1,1′-methylenebis(3-ethyl-1H-imidazol-3-ium) bis(hexafluorophosphate(V)), C11H18F12N4P2
Authors: Xiong Wan-Ming , Chen Jing , Zhao Wen , Zhou Yao-Hong , Jing Chen , Nie Xu-Liang
Published: September 2019

C11H18F12N4P2, monoclinic, P21/c (no. 14), a = 14.975(3) Å, b = 9.897(2) Å, c = 13.525(3) Å, β = 105.507(3)°, V = 1931.5(7) Å3, Z = 4, R
gt(F) = 0.0590, wR
ref(F
2) = 0.1843, T = 296(2) K.
Crystal structure of the 2:1 co-crystal 2-[(2-carboxyphenyl)disulfanyl]benzoic acid – 3-bromobenzoic acid, 2(C14H10O4S2)⋅C7H5BrO2
Authors: Tan Sang Loon , Tiekink Edward R.T.
Published: September 2019

C35H25BrO10S4, triclinic, P1̄ (no. 2), a = 7.9533(2) Å, b = 10.27180(10) Å, c = 20.6598(4) Å, α = 103.462(1)°, β = 95.933(2)°, γ = 96.008(1)°, V = 1618.11(5) Å3, Z = 2, R
gt(F) = 0.0624, wR
ref(F
2) = 0.1759, T = 100(2) K.
Assessing the impact of Autonomous Vehicles on urban noise pollution
Authors: Patella S. M. , Aletta F. , Mannini L.
Published: September 2019

This paper presents the results of a noise emission study of Autonomous Vehicles (AVs) and their impact on the road network. By comparing the current situation with a future hypothetical scenario (100% AVs penetration), this study highlights the positive effect, in terms of noise pollution, of the adoption of AVs on a real road network (city of Rome). For this scope, a traffic simulation-based approach was used to investigate the effects of AVs on the network congestion. Results show that the full AVs penetration scenario leads to an improvement in the network performances in terms of travel time and average network speed. Moreover, the amount of Vehicle Kilometre Travelled (VKT) shows an 8% increase on longer extra-urban routes, due to the higher capacity impact of AVs on highways, with a consequent load reduction for intra-urban shortcutting routes. These results are also reflected in terms of noise emission. In fact, the central area would benefit from lower noise emission, whereas an increase in traffic volume and speed lead to worsened conditions for some specific highway links of the network. Overall, it was shown that a 100% AVs fleet would have a beneficial effect for the noise pollution, leading to a general reduction of noise emissions, which is more pronounced for intra-urban roads.
Phenotypic diversity for agro-morphological traits in pigeon pea landraces [(Cajanus cajan L.) Millsp.] cultivated in southern Benin
Authors: Zavinon Fiacre , Adoukonou-Sagbadja Hubert , Bossikponnon Angelo , Dossa Hermann , Ahanhanzo Corneille
Published: September 2019

Pigeon pea is an important but unfortunately neglected grain legume crop in Benin. In this study, the phenotypic diversity in 84 landraces from Benin and four advanced varieties were evaluated at two locations during two consecutive rainy seasons. Twelve quantitative and ten qualitative variables were recorded. A wide range of variation was observed in qualitative traits as well as in quantitative variables. The overall Shannon–Weaver diversity index ranged from 0.41 (pod hairiness) to 1.51 (seed colour). Analysis of variance revealed highly significant differences among accessions for all quantitative traits, except the number of seeds per pod, the days to maturity and the seed yield per plant. In all quantitative traits, phenotypic coefficient of variation was higher than genotypic coefficient of variation indicating a substantial environmental effect on their variability. However, some traits (days to flowering, pod width, number of secondary branches and 100 seed weight) showed great value of heritability. Hierarchical clustering on principal components subdivided the collection from Benin into two groups that were clearly separated from the group of advanced varieties. The results gathered from this study have important implications for pigeon pea germplasm characterization and conservation while the inferred phenotypic groups could be used for parental selection and heterotic crossings in pigeon pea breeding in Benin.
Agritourism and the adaptive re-use of farm buildings in New Zealand
Authors: Mackay Michael , Nelson Tracy , Perkins Harvey C.
Published: September 2019

This paper reports findings from a study of the adaptive re-purposing of farm buildings for a wide array of agritourism activities. The research is being conducted in New Zealand where the international visitor sector is thriving. In response, an increasing number of farmers are attempting to boost their farm incomes by adding tourism ventures to their business portfolios. In doing so, many of them are using and preserving rural cultural heritage, particularly old agricultural and other rural buildings, while also diversifying farm activity. This element of agritourism therefore has an important role in the protection and adaptive re-use of farm buildings, farm landscape change, and the creation of new value and values in the countryside. In the cases we have studied, this entrepreneurial activity is largely farmer-driven and undertaken with some, but limited, financial support from central and local government. In considering the policy implications of our work, we call for the provision of advisory services to facilitate and enable New Zealand farmers to create profitable and sustainable high-quality tourism services that simultaneously preserve farm buildings.
Complementary Effects of Agricultural Tourism and Tourist Destination Brands in Preserved Scenic Areas in Mountain Areas of China and Europe
Authors: Chen Yanying , Dax Thomas , Zhang Dachang
Published: September 2019

Many scenic areas in mountain regions have attained preservation status, which enhances strategies to attract tourists based on its unique natural or cultural resources and its original brand. It is a particular challenge for plant-dependent assets how tourist attraction for the scenic areas could be increased in the off-season, taking account of the strong seasonal fluctuations. The paper focuses on lessons from a specific case of preserved scenic area, the area of rhododendron (“Dujuan” in Chinese) and compares it with several European examples. As indicated in the denomination of “Baili Dujuan” Scenic Area, a National Park in Guizhou Province in China, this plant is the leading asset in that area. The characteristics of the seasonal flowering of rhododendrons causes Baili Dujuan serious problems of a seasonal tourist offer. For several years Baili Dujuan has been promoting complementary activities of agricultural tourism and developing a brand of flower-enjoying destinations, by supporting the local farmers to grow also other economic flowers and fruit trees that bloom in different seasons. Such instruments have contributed to extend the flow of tourists for longer periods of the year, generating also substantial benefits to farmers and other local industries. Based on the emerging initiatives in Baili Dujuan and interesting experiences from protected mountain areas in Europe, the complementary effects of agritourism and tourist destination brands in Preserved Scenic Areas will be explored for further development.
Functional Foods for elderly people: new paths for multi “functional” agriculture
Authors: Chiara Filomena , Salvatore Fiorella Pia , Colantuono Fedele , Fiore Mariantonietta
Published: September 2019

Nowadays a growing interest in how agritourism could be able to promote alternative nutrition stands out. The increase in the number of elderly has determined a desire for quality of life improvement; consequently, more attention has been paid to the role of food and their contents. A diet comprising Functional Foods could help not only to improve life quality of an aging population, as these foods are potentially capable to improve health and well-being; but they could also reduce health risks or delay the onset of serious pathologies. Moreover, scientific evidence of the correlation between diet and health for the elderly population, having a sedentary lifestyle and even a constant increase in healthcare costs, have addressed the interest in healthier food products. The aim of this paper was to design new food-based paths for agritourism farms that could promote health, nutritional and cultural values. To define these paths, a two steps analysis was carried out: (1) opinion collection from elderly and agritourism operators and (2) definition of a logical framework.

Results highlighted that differentiating what is offered could increase health levels of elderly and create new multi “functional” shapes for agritourism farms aimed at both offering local and Functional Foods for elderly and at spreading social-tradition values.
Looks Real, or Really Fake? Warnings, Visual Attention and Detection of False News Articles
Authors: Wojdynski Bartosz W. , Binford Matthew T. , Jefferson Brittany N.
Published: September 2019

In recent years, online misinformation designed to resemble news by adopting news design conventions has proven to be a powerful vehicle for deception and persuasion. In a 2 (prior warning: present/absent) x 2 (article type: false/true) eye-tracking experiment, news consumers (N=49) viewed four science news articles from unfamiliar sources, then rated each article for credibility before being asked to classify each as true news or as false information presented as news. Results show that reminding participants about the existence of fake news significantly improved correct classification of false news articles, but did not lead to a significant increase in misclassification of true news articles as false. Analysis of eye-tracking data showed that duration of visual attention to news identifier elements, such as the headline, byline, timestamp on a page, predicted correct article classification. Implications for consumer education and information design are discussed.
Religious and Socio-cultural Influences on the Pakistani Wedding Invitation
Authors: Yasmin Musarat , Naseem Farhat , Sohail Ayesha
Published: September 2019

The Wedding Invitation is one of the significant text genres. Following genre analysis approach and discourse analysis (DA), the present research analysed the wedding invitation genres in Pakistan to explore generic structures, as well as the role played by the broader socio-cultural norms and values in shaping this genre. Therefore, a corpus of 50 wedding invitations in Urdu and English was randomly selected from cards received from January to June 2018. The results of this genre analysis revealed seven obligatory and one optional move in Urdu, while six obligatory and one optional move in English invitations. Through discourse analysis, it has been uncovered how religious association and cultural influence in Pakistani society shape textual selection. Little variation was displayed in the invitations of the two languages, presumably due to regional cultural reflections and recent influence of western values. A comparison of Pakistani and UK invitations showed differences not only in move selection but also in lexical choices which are shaped by the respective cultures.
Optimization of screen-space directional occlusion algorithms
Authors: Wawrzonowski Marcin , Szajerman Dominik
Published: September 2019

Developers of video games and simulations from the day one have been trying to improve visuals of their products. The appearance of the scenes depends to a large extent on the approximation to the physical basis of light behaviour in the environments presented. The best effects in this regard are global illumination. However, it is too computationally expensive. One of the methods to simulate global illumination without a lot of processing is Screen-Space Ambient Occlusion. Many implementations of this technique were created, though few take into account direction and colour of the incoming light. An exception is a technique named SSDO – Screen-Space Directional Occlusion. Unfortunately, it suffers from the same drawbacks as its less realistic cousins, such as noise and banding while also remaining moderately expensive for computation. The main purpose of this paper is to optimize basic SSDO method using technique called Statistical Volumetric Obscurance, enhancing its performance while retaining plausible visual effect.
Autocorrelation functions: a useful tool for both state and detector characterisation
Authors: Chesi Giovanni , Allevi Alessia , Bondani Maria
Published: September 2019

The calculation of autocorrelation functions represents a routinely used tool to characterise quantum states of light. In this paper, we evaluate the g(2) function for detected photons in the case of mesoscopic multi-mode twin-beam states in order to fully investigate their statistical properties starting from measurable quantities. Moreover, we show that the second-order autocorrelation function is also useful to estimate the spurious effects affecting the employed Silicon-photomultiplier detectors.