Complicated Phenomena Research Articles

A comparative study to critically assess the designing criteria for selecting an optimal adsorption heat exchanger in cooling applications

• Adsorption heat exchanger (AdHEx) type, fin dimension and body material are studied. • Different design criteria for comparing AdHExs are employed. • Rectangular finned-flat tube and annular finned-tube AdHExs are compared. • The AdHEx superiority in terms of chiller performance and compactness is examined. • A powerful numerical tool for designing the most efficient AdHExs is provided. In an adsorption cooling system (ACS), it is essential to design the most efficient AdHEx in terms of compactness, heaviness, and ACS performance parameters. For this purpose, the coupled effects of structural type, body material, and fin geometrical specifications of its adsorber heat exchanger (AdHEx) need to be investigated. Therefore, a three-dimensional distributed-parameter model is developed and validated to conduct a comprehensive parametric study on finned flat-tube and annular finned-tube AdHExs. In this regard, two different design criteria of AdHEx heat transfer area to adsorbent mass ratio (S/m ads ) and inter-particle mass transfer resistance are adopted as common bases of the comparisons. The results indicate that for any given bed geometrical configurations, there exists a certain threshold value for the thermal conductivity of AdHEx body material. For values greater than it, the specific cooling power (SCP) and volumetric cooling power (VCP) are approximately invariant. In contrast, the coefficient of performance (COP) is mainly influenced by the volumetric heat capacity (VHC) of the AdHEx body material such that it steadily decreases by increasing VHC. Independent of body material, utilizing the smallest fin dimensions for an AdHEx leads to the highest SCPs at the cost of lowering COP, dramatically. However, maximizing VCP is more complicated because the variations of VCP with fin height show entirely distinct behaviors for different body materials and AdHEx type. It is found that estimating the superiority of an AdHEx over another is beyond the ability of common rules of thumb because of complicated transport phenomena within the adsorber beds. In light of this, the approach and results of this study properly bridge the gap between the scientific and practical aspects of designing an AdHEx based on application constraints.

특허물품 병행수입에 있어서 내구재와 비내구재의 비교

It is very important matter whether we should choose between the ‘National Exhaustion’ which prohibits the parallel importation of patented goods and the ‘International Exhaustion’ which permits the parallel importation. The author generally supports the ‘International Exhaustion’, because once the patent holder exercises his rights and receives the remuneration, then such rights should be exhausted irrespective of the location of the first exercise of such right. However, in order to cope with complicated phenomena of the international trade, proper mixture of ‘International Exhaustion’ and ‘National Exhaustion’ would be a better option in light of the each characteristics of the patented goods in question. In this respect, the comparison of the economic notion of ‘Durable Goods’ and ‘Non-Durable Goods’ seems to be meaningful in dealing with exhaustion of patented goods and parallel importation. Patent exhaustion should be applied to the durable goods, which may be expected to be traded in the second hand market afterwards. On the contrary, non-durable goods is expected to consumed by the purchasers themselves. If the patent exhaustion should be applied to non-durable goods in international context, then windfall may be granted to the commercial scale, opportunistic third party who seeks the arbitrage in the course of trade of such non-durable goods. Thus, national exhaustion might be applied to only non-durable goods. To institutionalize above idea, it is proposed to amend the relevant regulation of the Korea Customs Service to the effect to permit the parallel importation of patented durable goods.

Conflict in Atwood’s The Handmaid’s Tale: A Critical Discourse Approach

Conflict is a common but complicated phenomenon. It has been extensively researched in many domains, including philosophy, sociology, psychology, and linguistics. Using the Critical Discourse Approach, this study examines the issue of self-society conflict in The Handmaid’s Tale. The significance of this work lies in the identification and explanation of the discursive strategies that force the ideological polarization of the positively portrayed self versus the negatively portrayed other. The purpose of this study is to answer two questions: what are the discursive strategies used in The Handmaid’s Tale to create a positive or negative representation, and how are these strategies implemented? Five extracts from The Handmaid’s Tale were examined using eight of Van Dijk’s discursive strategies (2006). The findings show the pervasiveness of the discursive strategies in The Handmaid’s Tale, which attempt to transmit the ideological polarization of a positive portrayal of the self against a negative presentation of the other. Students of critical discourse analysis, communications studies, and of English, in particular, may find the findings useful.

Sensing with Femtosecond Laser Filamentation.

Femtosecond laser filamentation is a unique nonlinear optical phenomenon when high-power ultrafast laser propagation in all transparent optical media. During filamentation in the atmosphere, the ultrastrong field of 1013–1014 W/cm2 with a large distance ranging from meter to kilometers can effectively ionize, break, and excite the molecules and fragments, resulting in characteristic fingerprint emissions, which provide a great opportunity for investigating strong-field molecules interaction in complicated environments, especially remote sensing. Additionally, the ultrastrong intensity inside the filament can damage almost all the detectors and ignite various intricate higher order nonlinear optical effects. These extreme physical conditions and complicated phenomena make the sensing and controlling of filamentation challenging. This paper mainly focuses on recent research advances in sensing with femtosecond laser filamentation, including fundamental physics, sensing and manipulating methods, typical filament-based sensing techniques and application scenarios, opportunities, and challenges toward the filament-based remote sensing under different complicated conditions.

Dynamic Effects of a MCNN-CS Under Electromagnetic Induction and Its Application

Cellular neural network (CNN) is one of the best artificial neural network models due to its hardware implementability and many applications for image processing. The memristor-based cellular neural network (MCNN) combines the distinct benefits of memristors and neural networks, and it excels in mimicking chaotic systems under the effect of electromagnetic induction. In this work, a novel CNN chaotic system based on a flux-controlled memristor (MCNN-CS) with electromagnetic induction effects is constructed. Dynamical behaviors are examined by controlling the magnetic flux leakage strength and the intensity of the electromagnetic induction related to the memristor. Based on stability analyses and numerical simulation, forward and reverse period-doubling bifurcations, various coexisting attractors, multiperiods, chaos, several periodic windows, and chaotic crisis are observed. Besides, a number of complicated phenomena, including transient chaos, intermittent chaos, sustained chaos and bistability are also observed, demonstrating that this chaotic system has a wide range of dynamic properties. Finally, we generate pseudo-random number sequences based on this new system and apply them to image encryption. The obtained results show that this chaotic system offers superior randomness and is hence appropriate for image encryption applications.

The 1782 Taiwan Zhangzhou-Quanzhou Feud: A Case Study on Qing Dynasty Communal Violence

With the aid of Chinese primary sources and supplementary secondary sources, this essay seeks to analyze the 1782 Taiwan “subethnic feud” between the Quanzhou and Zhangzhou communities of Zhanghua County, which began with a personal dispute but soon escalated into a lethal rural conflict. The term “subethnic feud (分类械斗),” widely referring to early modern conflicts between different Chinese communities, emphasizes the dominant role of local identity conflicts. However, I argue that such outbursts of violence were complicated phenomena. Instead of the maturation of supposed “ethnic rivalries,” the escalation of the conflict from a personal dispute to a full-scale “rural war” is more likely the joint consequence of three contributing factors: the strong patterns of Taiwanese social organization along subethnic lines, mercenary and thug activities, and the inactivity of the local government.

Fractional Brownian motion with random Hurst exponent: Accelerating diffusion and persistence transitions.

Fractional Brownian motion, a Gaussian non-Markovian self-similar process with stationary long-correlated increments, has been identified to give rise to the anomalous diffusion behavior in a great variety of physical systems. The correlation and diffusion properties of this random motion are fully characterized by its index of self-similarity or the Hurst exponent. However, recent single-particle tracking experiments in biological cells revealed highly complicated anomalous diffusion phenomena that cannot be attributed to a class of self-similar random processes. Inspired by these observations, we here study the process that preserves the properties of the fractional Brownian motion at a single trajectory level; however, the Hurst index randomly changes from trajectory to trajectory. We provide a general mathematical framework for analytical, numerical, and statistical analysis of the fractional Brownian motion with the random Hurst exponent. The explicit formulas for probability density function, mean-squared displacement, and autocovariance function of the increments are presented for three generic distributions of the Hurst exponent, namely, two-point, uniform, and beta distributions. The important features of the process studied here are accelerating diffusion and persistence transition, which we demonstrate analytically and numerically.

Potential Soil Erosion Modeled with RUSLE Approach and Geospatial Techniques (GIS Tools and Remote Sensing) in Oued Joumouaa Watershed (Western Prerif-Morocco)

Water erosion is a complicated phenomenon that contributes to soil degradation and is linked to natural and anthropogenic causes that are difficult to manage in time and space. It has a significant impact on our country and necessitates a number of studies and efforts to prevent and manage it. Geospatial approaches (GIS tools and remote sensing (RS) data) were used to test the RUSLE strategy in the Joumouaa watershed, where it was found to be accurate. The latter is a mountainous range with a 60 km² area that is part of the Western Prérif and in the Teroual region (northern Morocco). The proposed technique integrates the RUSLE for calculating erosion with geospatial techniques for detecting variables that cause water erosion and soil loss. The erosivity factor R had a range of values, with an average of 1832.76 to 1968.87. It was shown that soils had an erodibility factor k of 0.016 to 0.0245, which indicates that they are the most vulnerable. With the upstream being rougher and more sensitive, the LS factor ranged from O and more than 43%. According to the nature of the land, there are different C factors. Water erosion affects all regions of the basin to varying degrees, depending on the processes that cause erosion. The results show that the soils in the Joumouaa watershed are medium to highly erodible, with maximum erodibility ranging from 50 to 280 t/h/year, a sparse plant covers with little protection, and moderate to high climatic aggressiveness. An understanding of the danger of soil erosion may be gained from this study, as well as a guide for land management techniques and land planning that can be used to construct a decision support tool in terms of natural resource management.

Climate change and firm productivity: the case of drought

ABSTRACT This paper evaluates the causal effects of climate change on firm productivity from the perspective of drought, which is a complicated climate phenomenon. Based on the panel data of agriculture-related firms in China, we present strong evidence that drought significantly reduces firm’ total factor productivity. Mechanism analysis shows that the negative effect is rooting from higher costs of equity capital, higher operation costs, and lower investment efficiency. Finally, we find that government subsidy and policy stimulating corporate innovation can help firms adapt to climate change.

Diversity of optical soliton structures in the spinor Bose–Einstein condensate modeled by three-component Gross–Pitaevskii system

This paper pays attention to secure the different forms of optical soliton solutions to the spinor Bose–Einstein condensate. Three-component Gross–Pitaevskii (tc-GP) system which describes the F = 1 spinor Bose–Einstein condensate (BEC), with F denoting the atom’s spin, is used as a governing model to secure the solutions in BEC. Superfluidity and superconductivity are two properties of the low-temperature phenomenon that are associated with the BEC, which is formed by a diluted atomic gas. There has been an increasing interest in studying multi-component equations because they can be utilized to explain a wide range of complicated physical phenomena and have more dynamical structures of localized wave solutions. New extended direct algebraic method (NEDAM), a recently developed integration tool, is used to secure the solution. Different kinds of solitons, such as dark, singular, kink, bright–dark, complex and combined, are extracted. In addition, hyperbolic, exponential type and periodic solutions are guaranteed. Nonlinear partial differential equations (NLPDEs) are well-explained by the technique since it offers previously derived solutions and also extracts new exact solutions by incorporating the results of multiple procedures. In addition to discussing the physical representation of some solutions, we also plot 3D, 2D and contour graphs using the appropriate parameter values. The findings of this paper can improve the nonlinear dynamical behavior of a given system and demonstrate the efficacy of the methodology used. We believe that a large number of engineering model specialists will benefit from this research. Findings suggest that the algorithm employed is efficient, prompt, succinct and applicable to complex systems.

Molecular Markers Associated with Heat Tolerance in Wheat

High temperatures have emerged as a major significant barrier for wheat production, which is generally adapted to the high temperature and sub-tropical environment. The sensitivity of wheat to high temperature a very high mainly during the grain filling stages due to the vulnerability of abiotic stresses. In the tropical and sub-tropical regions, each increase in ambient temperature can lower grain yield by 3-20%. Tolerance to high temperature is a complicated phenomenon and a quantitative trait that influences a variety of physiological and agronomic traits. No single trait thoroughly explains why certain wheat varieties can produce higher yield even when exposed to heat stress. Genes and molecular markers associated with stress tolerance mechanisms are crucial for improving crop productivity under high temperature environment. Different genotypes respond differently to heat stress, and this is mediated by genes or quantitative trait loci (QTL). Genotypes that are either high temperature stress resistant or mature early without yield loss, allowing them to avoid stress are needed to be produced. Plant breeders should concentrate on current yield patterns and environmental stress, as well as traits related to yield stability and sustainability. To increase the possibility of success of new methods like DNA marker technology will be needed despite the persistent yield enhancement from conventional breeding

The phenomenon of red and yellow autumn leaves: Hypotheses, agreements and disagreements.

Yellow and red autumn leaves are typical of many temperate/boreal woody plants. Since the 19th century, it has been either considered the non-functional outcome of chlorophyll degradation that unmasks the pre-existing yellow and red pigments or that the de novo synthesis of red anthocyanins in autumn leaves indicated that it should have a physiological function, although it was commonly ignored. Defending free amino acids and various other resources released especially following the breakdown of the photosynthetic system, and mobilizing them for storage in other organs before leaf fall, is the cornerstone of both the physiological and anti-herbivory hypotheses about the functions of yellow and red autumn leaf colouration. The complicated phenomenon of conspicuous autumn leaf colouration has received significant attention since the year 2000, especially because ecologists started paying attention to its anti-herbivory potential. The obvious imperfection of the hypotheses put forth in several papers stimulated many other scientists. Hot debates among physiologists, among ecologists, and between physiologists and ecologists have been common since the year 2000, first because the various functions of yellow and red autumn leaf colouration are non-exclusive, and second because many scientists were trained to focus on a single subject. Here, I will review the debates, especially between the photoprotective and the anti-herbivory hypotheses, and describe both the progress in their understanding and the required progress.

Agree as information transmission over dependencies

AbstractIn contemporary Minimalism agreement is the result of a syntactic operation. In contrast to Merge, Agree does not build structure, its role being to transmit morphological features from one head to another. We provide an alternative perspective on agreement in a Minimalist idiom, one that cuts the ontological pie in a different way. Syntax has as its only operation Merge, and agreement, now divorced from syntax, transfers purely morphological information from head to head along channels established via syntactic feature checking. Separating agreement from structure building seems to enable more elegant descriptions of even complicated agreement phenomena.

Constructing high-resolution groundwater drought at spatio-temporal scale using GRACE satellite data based on machine learning in the Indus Basin

The complicated phenomenon induced by inadequate precipitation is a drought that impacts water resources and human life. Traditional methods to assess groundwater drought events are hindered due to sparse groundwater observations on a spatio-temporal scale. These groundwater drought events are not well studied in the study area of the Indus Basin Irrigation System (IBIS) holistically. This study applied four machine learning models to the training datasets of Gravity Recovery and Climate Experiment (GRACE) Terrestrial Water Storage (TWS) and Groundwater Storage (GWS) data to improve resolution to 0.25° from 1°. The Extreme Gradient Boosting (XGBoost) model outperformed the four models and results showed Pearson correlation (R) (0.99), Nash Sutcliff Efficiency (NSE) (0.99), Root Mean Square Error (RMSE) (5.22 mm), and Mean Absolute Error (MAE) (2.75 mm). The GRACE Groundwater Drought Index (GGDI) was calculated by normalizing XGBoost-downscaled GWS. The trend characteristics, the temporal evolution, and spatial distribution of GGDI were analyzed across the IBIS from 2003 to 2016. The wavelet coherence approach was used to evaluate the relationship between teleconnection factors and GGDI. The XGBoost downscaling model can accurately reproduce local groundwater behavior, with the acceptable correlation of coefficient values for validation (ranging from 0.02 to 0.84). The accumulated Standardized Precipitation Evapotranspiration Index (SPEI) with the time of 1, 3, and 6 months, and self-calibrated Palmer Drought Severity Index (sc-PDSI) were used to validate GGDI. The findings have demonstrated that GGDI has comparable drought patterns to SPEI-3 and SPEI-6 and sc-PDSI. The teleconnection factors have a significant impact on the GGDI shown by the wavelet coherence technique. The impact of the sea surface temperature index (namely, NINO3.4) on GGDI was observed significantly high among other teleconnection factors in the IBIS. The proposed framework can serve as a useful tool for drought monitoring and a better understanding of extreme hydroclimatic conditions in the IBIS and other similar climatic regions.

A (2+1)-dimensional modified dispersive water-wave (MDWW) system: Lie symmetry analysis, optimal system and invariant solutions

In this article, the authors study a (2+1)-dimensional MDWW system, which describes the non-linear and dispersive long gravity waves traveling in two horizontal directions on shallow waters of uniform depth. The Lie group theoretic approach is employed to find the similarity reductions and analytic solutions of the (2+1)-dimensional MDWW system. The infinitesimal generators for the considered system are obtained under the invariance property of the Lie group of transformations. Later, we construct groups of symmetries and tables for commutation and adjoints. The adjoint table is further used to establish a one-dimensional optimal system of subalgebras. Finally, based on the optimal system, similarity reductions are obtained. A repeated process of similarity reductions reduces the governing system of partial differential equations (PDEs) into systems of ordinary differential equations (ODEs) that generate invariant solutions. Moreover, the dynamical behaviors of the obtained solutions such as multi-soliton, doubly soliton, single soliton, solitary waves, and stationary waves are graphically shown using 3D, 2D, and corresponding contour plots. Thus, physicists and mathematicians can follow complicated physical phenomena more effectively and efficiently using these graphs.

Analytical solutions of (2+1)-dimensional time conformable Schrödinger equation using improved sub-equation method

In this work, the improved sub-equation method is used to get exact analytical solutions for the (2+1)-dimensional time conformable Schrödinger equation with beta-derivative. This method has been used to get generalized hyperbolic function solutions, generalized trigonometric function solutions, and rational solutions. The novel structures of solutions are illustrated when appropriate parameter values have been assigned. The physical surfaces of certain obtained solutions have been visually shown in various formats, which aids in comprehending the complicated physical phenomena of these dynamical models. The findings demonstrate the superiority of the performed method, which can be used to solve a wide range of nonlinear physical equations.

Folk Ballad beyond the Genre Definition

The ballad has long existed in the periphery of the Lithuanian folkloristics. In this article, the folk ballad’s role and place in the Lithuanian folksong tradition is explored discussing two classical works of the Lithuanian folklore research characterized by their rather diverse theoretical assumptions. Both works were published in the end of the 1960s. The first one is the study on the Lithuanian folk ballads by Pranė Jokimaitienė (1968), and the second one is the monograph by Donatas Sauka discussing the uniqueness and value of folklore (1970). The author of the article suggests examining the folk ballad not only in terms of the genre, but also from the broader interdisciplinary perspective, thus combining both above-mentioned points of view by Jokimaitienė and Sauka. Such approach is strengthened by the research history of the ballad – a very complex and complicated phenomenon.
 Limiting the ballad analysis exclusively by the Lithuanian material on the one hand, and by the pure folklore on the other, hinders us from adequately placing the ballad in the Lithuanian folklore system. Therefore, the author suggests renouncing the narrow concept of the ballad as a text, at the same time regarding it beyond the definition of the genre and taking into account its social, cultural, historical and anthropological contexts. The article aims at discussing the peculiarities of the ballads’ existence in the Lithuanian environment in terms of development of the Lithuanian folkloristics. Notably, ballads have always found themselves at the outskirts of the idealizing template of the research in Lithuanian folksong.
 Various nations have seen very diverse adaptations of the ballad plots, and this international diversity of folk ballads along with their dissemination across other genres opposes making clear decisions regarding their identity, even when the general definition is applied. Giving in to the temptation of submitting the generic definition, the folklorist adopts the views of a literary scholar: the definition might look essentially correct (the ballad is “a lyric-epic composition characterized by dramatic features” or “a narrative folksong with lyrical and dramatic character”, etc.), but will hardly be of use. Compositions with similar plots might be attributed to different genres in various national folklores, which works according to their own folklore systems. Besides, even variants of the same type might embrace a rather broad scope: from the stylistically pure ballads to the lyric transformations with ballad motives. This complicates the wish to combine all compositions and types into a single generic group. Here, one must bear in mind the already established tradition of folklore research. In Lithuania, development of folkloristics has shaped a general image of the folklore universe, which has in turn dictated how the whole folksong corpus is ordered and systematized.
 Finally, the author draws the readers’ attention to the fact that ballads – the folksong layer of foreign origins and abounding in signs of “otherness” – have become unique compositions in Lithuania, not similar either to European samples nor to the authentic canonic Lithuanian folksongs. Having appropriated a topic or some wandering story line, Lithuanians frequently do their own transformations in terms of content and form. It is concluded that the Lithuanian ballads have sprung from interactions between the local folksong tradition and the balladic expression, thus acquiring an additional meaning and value.

WRITTEN DISCURSIVE COMPETENCE AS A COMPONENT OF FOREIGN LANGUAGE COMMUNICATIVE COMPETENCE OF LAW UNIVERSITY STUDENTS

The paper discusses written discursive competence as a main element of foreign language communicative competence of the students of Tashkent State University of Law. Indeed, written discursive competence is the writer’s ability to generate various types of discourse for involvement in written foreign language communication with the intended addressee in order to achieve the desired result, depending on the sociocultural setting and communicative task. Because written discursive competence is a complicated multicomponent phenomenon, its structure distinguishes a number of subcompetences, which are thoroughly discussed in the article. Prior to the discussion part, the author focuses on the definition of the terms “discourse” and “discursive competence”, relying on the perceptions of various scholars. Also, the differences of “discourse” and “text” are introduced accordingly, and the tasks for the formation of discursive competence of law students in this very context are outlined with their specific characteristics. It is deemed that these tasks are of importance in teaching writing to the students in the law field.

Identification of QTL for Stem Traits in Wheat (Triticum aestivum L.).

Lodging in wheat (Triticum aestivum L.) is a complicated phenomenon that is influenced by physiological, genetics, and external factors. It causes a great yield loss and reduces grain quality and mechanical harvesting efficiency. Lodging resistance is contributed by various traits, including increased stem strength. The aim of this study was to map quantitative trait loci (QTL) controlling stem strength-related features (the number of big vascular bundles, stem diameter, stem wall thickness) using a doubled haploid (DH) population derived from a cross between Baiqimai and Neixiang 5. Field experiments were conducted during 2020–2022, and glasshouse experiments were conducted during 2021–2022. Significant genetic variations were observed for all measured traits, and they were all highly heritable. Fifteen QTL for stem strength-related traits were identified on chromosomes 2D, 3A, 3B, 3D, 4B, 5A, 6B, 7A, and 7D, respectively, and 7 QTL for grain yield-related traits were identified on chromosomes 2B, 2D, 3D, 4B, 7A, and 7B, respectively. The superior allele of the major QTL for the number of big vascular bundle (VB) was independent of plant height (PH), making it possible to improve stem strength without a trade-off of PH, thus improving lodging resistance. VB also showed positive correlations with some of the yield components. The result will be useful for molecular marker-assisted selection (MAS) for high stem strength and high yield potential.

Wake Patterns Around Front Tyre And Wheel On Vehicle Dynamics Clarified By On-Board PIV Application

Temporal and spatial wake patterns and behaviors around rotating tires and wheels are some of the most critical flow phenomena on aerodynamic performance and vehicle dynamics. In particular, aerodynamic drag is one of the most important factors on greenhouse effect gas and fuel efficiencies, in these days remarkably focused on the shift from conventional fossil fuel power plants to electric ones to prevent the global warming. From the point of view of aerodynamics, OEMs' wind tunnel facilities with moving ground and high fidelity CFD tools are employed to optimize the exterior body shape and aerodynamic device in order to reduce the aerodynamic drag. Recently, high fidelity CFD tools which include tire rotations are easily employed by users, not only specialists, to analyze the flow around the vehicle and to optimize the exterior design at the development phase. However, more accurate and detailed understanding of complicated flow phenomena around vehicle during motion are required to predict these flow phenomena accurately by CFD tools at early development phase. Moreover, the more detailed experimental investigation is essential for the aerodynamicists, not only to develop the prediction tool but also to understand the flow phenomena around vehicle in its essence. Therefore, in this study, the on-board 2D-3C PIV measurement system in wind tunnel facility has been developed to investigate the wake patterns around rotating front tire and wheel. As result, the critical wake patterns have been clarified by POD analysis of the mentioned on-board 2D-3C PIV measurement data. These front wheelhouse wake patterns were classified in terms of the wake generation locations that produced the aerodynamic drag. These results indicate that there is the potential for an improvement in not only aerodynamic drag and but also vehicle dynamics by flow control to suppress the wake generations around front wheelhouse and the flow fluctuation around bodyside, moreover, this system can be applied to real world running condition in near future.