Specific Orientation Research Articles

Training equipment for sports games

Growing requirements for the quality of training of specialists in game sports dictate the involvement of new approaches to the construction and organization of the educational and training process. The expediency of using training simulators in game sports is considered, their specific orientation and rationality of use are described. The purpose coverage of training equipment aimed at improving the physical and technical training of higher education students in sports games classes. Results of the research.The analysis of scientific and methodical literature, the Internet information network made it possible to determine that training equipment is a powerful tool in sports games. The review of information sources indicates the positive impact of simulators in the process of physical education and professional training in sports games of students of higher education institutions. It was found that the use of training equipment allows you to significantly shorten the training period, allows you to selectively influence the development of motor skills, take into account the individual level of physical development and physical fitness of each student, improve the quality of technical training, simulate motor actions, and monitor various types of athlete training. Examples of training equipment are given, the purpose of their purpose and the method of their use are described. Conclusions. The quality of performance of a wide range of technical and tactical techniques requires a review of the content, forms and methods of conducting initial training sessions on sports games. The updating of traditional means and the involvement of training equipment will allow to qualitatively increase the effectiveness of the educational process, both in physical education and in the training of future specialists in the field of physical culture and sports.

Specifics of Chinese students’ cognitive orientations in mastering technical disciplines

Introduction. Currently, the leadership of the People’s Republic of China pays special attention to the issues of technical vocational education. The learners from the PRC studying in Russia have specific cognitive orientations in mastering technical disciplines. The aim of the article is studying the specifics of academic resilience in mastering technical sciences by PRC students of Ural Federal University. Materials and methods. The academic resilience of PRC students from Ural Federal University in terms of mastering technical sciences was measured using the ‘Technics Resilience Scale for University Students’ (TRSUS). TRSUS aims to build Feedback literacy and Self-assessment with a view to help a student to pursue technical studies productively. The survey involved 659 students who had a technical science learning experience in one of the educational programmes: “Civil Engineering”, “Architecture”, “Geodesy and Remote Sensing”, “Steam Power Industry and Heat Engineering”, “Water Supply and Drainage”. The students assessed their resilience in technical sciences under a 5-score Likert response scale, with the use of Tencent Questionnaire in English. The statistical processing of measurement results was carried out using Structural Equation Modelling (SEM) methodology with the use of SPSS 23.0 and Amos 18.0 software packages. Results. The statistical analysis of results of PRC students from Ural Federal University in terms of measuring resilience in technical sciences under the TRSUS scale showed that the wording of the questions was adequate to the measurement context. The primacy of students’ incremental beliefs/goals towards improving the efficiency of learning activities was revealed. A strong correlation between students’ answers with the TRSUS questions was found. Cronbachs alpha was equal to 0.977, which is evident of high internal consistency of students’ answers. The structural model of confirmatory factor analysis of TRSUS data including four indicators (factors) – “Persistence”, “Perceived Value”, “Cognitive Complexity” and “Incremental Beliefs” – has the best source data fitting criteria. The method of exploratory factor analysis of TRSUS data revealed the specificity of cognitive orientations of PRC students from Ural Federal University: the choice of educational programme influences most prominently the indicator “Perceived Value”, which is explained by the peculiarities of Chinese technological culture. Conclusion. An original methodology for measuring university students’ academic resilience in technical sciences – ‘Technics Resilience Scale for University Students’ (TRSUS) – is presented. The use of TRSUS makes it possible to determine the specifics of students’ cognitive orientations in mastering technical disciplines and to form their competent feedback and self-assessment for efficient continuation of education.

Thriving amidst adversity: Flourishing and grit in Ukrainian college students with strong life purpose before and after the onset of the Russian war in Ukraine

This multi-study examined the role of life purpose in the well-being of Ukrainian university students before (Study 1) and during the Russian war in Ukraine (Study 2) during the 2021-22 academic year using a cross-sectional design. University students from a city highly affected by the war, a region which borders Russia, completed measures of sense of purpose in life (awakening to purpose, awareness to purpose, altruistic purpose), specific purpose orientations (others-growth, self-growth, career-focused), flourishing, and grit (consistency of interests, perseverance of effort). Structural equation modeling was used to test four alternative path models. In Study 1 (N = 159), flourishing was positively predicted by all measures of purpose, except for awareness of purpose, which was a negative but weak predictor. Similar to flourishing, both dimensions of grit were positively predicted by career-focused purpose orientation above and beyond the overall sense of life purpose. Additionally, perseverance of effort was predicted positively by awakening to purpose. Consistent with Study 1, in Study 2 (N = 107), flourishing and perseverance of effort were positively predicted by career-focused purpose orientation above and beyond the overall sense of life purpose. Additionally, flourishing was positively predicted by awakening to purpose and others-growth purpose orientation. Overall, students with a strong life purpose reported high sense of flourishing and grit. Findings also highlighted the salient role of career-focused purpose orientation in students' well-being. It is thereby important to support students in exploring and connecting life's purpose with their career aspirations.

A comprehensive study on texture evolution and recrystallization mechanism of Fe-4.5 wt% Si with strong {114}

Improving both the magnetic properties and strength of non-oriented electrical steel used in driving motors of new energy vehicles is a great challenge. In this study, a 4.5 wt% Si non-oriented electrical steel that had a strong {114}<481> texture and exhibited excellent magnetic and high strength, was produced via hot rolling, cold rolling and annealing. The texture evolution of hot-rolled plate with strong Goss and medium strength λ-fiber ({100}<0vw>) was investigated in detail during rolling and annealing. The VPSC model was used to simulate the texture evolution during the rolling process, of which the neff model could satisfactorily explain the classical rotation route of Goss and Cube. At the initial stage of recrystallization, the orientation of the recrystallized grains, characterized by electron backscatter diffraction (EBSD), was closely related to the orientation of the hot-rolled plate and rotation path during the rolling process. This clear evidence indicated that the initial recrystallized grains were oriented nucleation. During the recrystallization process, the characterization of specific orientations by quasi-in-situ EBSD revealed that the unusual {114}<481> was formed by an oriented growth mechanism. Texture evolution during the recrystallization indicated oriented nucleation as an inherent property responsible for the initial recrystallization texture, while oriented growth was influenced by deformed grain size and grain boundary characteristics.

Strain-induced precipitation behaviors of 7Mo super-austenitic stainless steel

Strain-induced precipitation (SIP) behaviors of 7Mo super-austenitic stainless steel (SASS) were studied by strain relaxation test at 850 °C. Our results reveal that sigma (σ) phases are the predominant SIP of 7Mo SASS, with the chemical formula of (FeNi) (CrMo). SIP first precipitates in granular shape at HAGBs, such as deformed grain boundaries (SIP-GBs), interfaces between deformation twin layers and matrix (SIP-TW), and HAGBs inside deformed grains (SIP-HAGBs). This is attributed to the ability of HAGBs for providing high deformation stored energy, nucleation sites, and efficient element diffusion channels. When the nucleation sites at HAGBs become saturated with increasing holding time, needle-like SIPs (SIP-NL) are precipitated along closely packed planes of γ-Fe matrix. The specific orientation relationships between SIP-NL and matrix, namely (−111)γ-Fe//(00–1)σ, [0–11]γ-Fe//[-110]σ or (-1-1-1)γ-Fe//(00–1)σ, [0–11]γ-Fe//[-110]σ, and the needle-like shape are contribute to minimizing interfacial energy and elastic strain energy of SIP, respectively, thereby promoting SIP-NL. The absence of SIP on dislocations can be attributed to the large critical nucleus size of σ phase (about 4.87 nm), which poses challenges for SIP nucleation through dislocation distortion energy. Mo is the controlling element for the nucleation and growth of SIP. SIP can promote cDRX through particle-induced nucleation (PSN) mechanism during the deformation process, while residual high-density dislocations around SIP can also promote cSRX during the holding process. During holding process, the boundaries of recrystallized grains can also serve as nucleation sites for SIP, thereby promoting SIP, and finally form a multi-layer structure of “σ phase/Recrystallization/σ phase”.

Cline Sciamma's water lilies: adolescent sexual discovery and the expression of sexual desire

Cline Sciammas 2007 youth film Water Lilies presents the sexual desires and discoveries of three girls in the midst of their gender identity in a very feminine form of expression. The film does not specify the specific sexual orientation of the characters, but rather shows the confusion of adolescence and the pain of teenage throbbing in the process of exploration. The article analyzes how the three girls cope with and express their adolescent sexuality in three ways: firstly, the flexible use of the water element, which represents femininity, and the use of the central axis of the camera to construct highly stylized scenes; secondly, it explores the significance of the girls body language in the expression of desire, criticizing the habit of thinking about women as objects of male desire, and showing the expression of desire for the same sex and men from the female perspective; finally, the film uses camera language (such as the use of filters, voyeuristic shots, etc.) to visualize the sense of touch in female desire, and shows the delicate emotional changes in the film through the analysis of continuous shots.

Design of novel highly sensitive sensors for crack detection in metal surfaces: theoretical foundation and experimental validation

The application of different types of microwave resonators for sensing cracks in metallic structures has been subject of many studies. While most studies have been focused on improving the sensitivity of planar crack sensors, the theoretical foundation of the topic has not been treated in much detail. The major objective of this study is to perform an exhaustive study of the principles and theoretical foundations for crack sensing based on planar microwave resonators, especially defective ground structures (DGS) including complementary split ring resonators (CSRRs). The analysis is carried out from the equivalent circuit model as well as the electromagnetic (EM) field perspectives, and guidelines for the design of crack sensors with high sensitivity are developed. Numerical and experimental validation of the provided theoretical analysis is another aim of this article. With this aim, the developed guidelines are used to design a crack sensor based on a single-ring CSRR. It is shown that the sensitivity of the proposed sensor is almost three times higher than the sensitivity of a conventional double-ring CSRR. Moreover, it is demonstrated that folded dumbbell-shape DGS resonators can be used to achieve even higher sensitivities. The CSRR-based crack sensors presented in this study and other studies available in the literature are only sensitive to cracks with a specific orientation. To address this limitation, a modified version of the DGS is proposed to sense cracks with arbitrary orientations at the cost of lower sensitivity. The performance of all the presented sensors is validated through EM simulation, equivalent circuit model extraction, and measurement of the fabricated prototypes.

Effect of grain orientation and precipitates on the superelasticity of Fe–Ni–Co–Al polycrystalline alloys

In this paper, the evolution of microstructure in Fe–Ni–Co–Al polycrystalline alloys and its effects on mechanical properties were systematically investigated. The results show that the proportion of high-angle grain boundaries (HAGBs) is 98.1 % with 51.2 % of Σ3 GBs during the solid solution (SS) process. The distribution of Σ3 GBs and other HAGBs (non-Σ3 HAGBs) are relatively dispersed, which prevents the formation of a specific orientation. In addition, there is no discernible anisotropy in GB migration during the SS process, ultimately resulting in the absence of texture. In contrast, during the directional recrystallization (DR) process, the directional migration of GBs is driven by the temperature gradient. Random high-angle grain boundaries (RHAGBs) with Σ values exceeding 29 possess higher GB energy and migration rate compared to low-angle grain boundaries (LAGBs) and HAGBs, making them more susceptible to GB migration. In the grain incubation area, the proportion of RHAGBs between grains oriented {111}<214> (grain 2 and grain 5) and their surrounding grains are 90 % and 75 %. These grains have the growth advantage and eventually form the main orientation {111}<214>. While the proportion of RHAGBs between grains oriented {114}<214> (grain 11) and its surrounding grains is only 65 %, characterized by lower GB energy and migration rate. Therefore, these grains eventually form the minor orientation {114}<214>. The coherent L12-Ni3Al (γ′) precipitates were observed in both the SS-AG (SS after aging) and DR-AG (DR after aging) treatments. The DR-AG alloy, characterized by {111}<214> and {114}<214> orientations and γ′ precipitates, exhibited a 3.6 % recoverable strain and a 1.2 % superelastic strain, whereas no evident superelastic behavior was found in the SS-AG alloy, which featured a random texture and γ′ precipitates.

Quantum Phase Transition in Magnetic Nanographenes on a Lead Superconductor.

Quantum spins, also known as spin operators that preserve SU(2) symmetry, lack a specific orientation in space and are hypothesized to display unique interactions with superconductivity. However, spin-orbit coupling and crystal field typically cause a significant magnetic anisotropy in d/f shell spins on surfaces. Here, we fabricate atomically precise S = 1/2 magnetic nanographenes on Pb(111) through engineering sublattice imbalance in the graphene honeycomb lattice. Through tuning the magnetic exchange strength between the unpaired spin and Cooper pairs, a quantum phase transition from the singlet to the doublet state has been observed, consistent with the quantum spin models. From our calculations, the particle-hole asymmetry is induced by the Coulomb scattering potential and gives a transition point about kBTk ≈ 1.6Δ. Our work demonstrates that delocalized π electron magnetism hosts highly tunable magnetic bound states, which can be further developed to study the Majorana bound states and other rich quantum phases of low-dimensional quantum spins on superconductors.

Directionality and polarization of response spectral ordinates in the 2023 Kahramanmaras, Türkiye earthquake doublet

Until recently, the orientation of maximum horizontal spectral response was generally believed to not have a predominant orientation at rupture distances greater than 5 km. However, a recent study found that the orientation of maximum spectral response for strike-slip earthquakes in the NGA-West2 database tends to occur close to the epicentral transverse orientation, that is, an orientation perpendicular to a line connecting the epicenter to the station. This article investigates directionality in the 6 February 2023 Türkiye doublet earthquakes ( Mw 7.8 and 7.5) with strike-slip faulting. The orientation of the maximum response of 5%-damped linear elastic oscillators was studied. The spatial distribution of the level of polarization, which in this article refers to the amount of directionality, and intensities at specific orientations were also studied. The maximum spectral response was found to occur systematically close to the epicentral transverse orientation, consistent with previous observations for other strike-slip earthquakes. For the Mw 7.8 event where the location of maximum slip was relatively far from the epicenter, it was found that the orientation of maximum spectral response is, on average, closer to the maximum slip transverse orientation (i.e. perpendicular to a line connecting the station to the surface projection of the point of maximum slip) when compared to the epicentral transverse orientation over most period ranges. This suggests that the maximum slip transverse orientation may be a better estimator for determining the orientation of maximum spectral response in large-magnitude strike-slip earthquakes, although further study using more events is warranted. Polarized motions were observed over large geographical areas, and the orientation of maximum spectral response was found to be close to the epicentral or maximum slip transverse for Joyner–Boore distances up to the farthest studied (400 km). These findings further support the case for the development of orientation-dependent ground motion models for strike-slip earthquakes.

Impact of Ion-Mixing Entropy on Orientational Preferences of DNA Helices: FRET Measurements and Computer Simulations.

Biological processes require DNA and RNA helices to pack together in specific interhelical orientations. While electrostatic repulsion between backbone charges is expected to be maximized when helices are in parallel alignment, such orientations are commonplace in nature. To better understand how the repulsion is overcome, we used experimental and computational approaches to investigate how the orientational preferences of DNA helices depend on the concentration and valence of mobile cations. We used Förster resonance energy transfer (FRET) to probe the relative orientations of two 24-bp helices held together via a freely rotating PEG linker. At low cation concentrations, the helices preferred more "cross"-like orientations over those closer to parallel, and this preference was reduced with increasing salt concentrations. The results were in good quantitative agreement with Poisson-Boltzmann (PB) calculations for monovalent salt (Na+). However, PB underestimated the ability of mixtures of monovalent and divalent ions (Mg2+) to reduce the conformational preference. As a complementary approach, we performed all-atom molecular dynamics (MD) simulations and found better agreement with the experimental results. While MD and PB predict similar electrostatic forces, MD predicts a greater accumulation of Mg2+ in the ion atmosphere surrounding the DNA. Mg2+ occupancy is predicted to be greater in conformations close to the parallel orientation than in conformations close to the crossed orientation, enabling a greater release of Na+ ions and providing an entropic gain (one bound ion for two released). MD predicts an entropy gain larger than that of PB because of the increased Mg2+ occupancy. The entropy changes have a negligible effect at low Mg2+ concentrations because the free energies are dominated by electrostatic repulsion. However, as the Mg2+ concentration increases, charge screening is more effective and the mixing entropy produces readily detectable changes in packing preferences. Our results underline the importance of mixing entropy of counterions in nucleic acid interactions and provide a new understanding on the impact of a mixed ion atmosphere on the packing of DNA helices.

Non-Destructive Textural Characterization of Southern Romanian Neolithic and Chalcolithic Pottery Using Digital Image Analysis on Tomographically Reconstructed Sections

Pottery is a complex archaeological material that is found ubiquitously in various spatial–temporal frameworks from all over the world; therefore, it is of great importance to archaeological research. The current paper aims to present and discuss the results obtained on a batch of Neolithic (ca. 6000–5000 BC) and Chalcolithic (ca. 5000–3900 BC) pottery sherds from Southern Romania through X-ray Computed Tomography, a non-destructive methodology that allows for the 3D reconstruction and precise measurement of inclusions and voids present within ceramic artefacts. Images from several potsherds were subsequently exported and analyzed by means of dedicated software (ImageJ 1.44p and GIMP) to extract quantitative information on the observed features. Grain size and morphometric analyses were performed on the particles, while the contour variability of the examined inclusions was characterized through the application of shape descriptors. Voids were analyzed in order to reveal specific orientation patterns through the examination of the aspect ratio of the holes and of the Rayleigh z test values. These analyses evidenced the general reliance of moderately and poorly sorted clays for ceramic production, accompanied by a gradual transition from organic to grog tempering, while conservative traditions remained prevalent in primary pottery-forming processes.

Establishing a link between complex courtyard spaces and thermal comfort: A major advancement in evidence-based design

Amidst climate change, the importance of climate-adaptive design in architecture and landscape design has surged, particularly in residential courtyards, where optimizing the microclimate is paramount to residents' well-being. Traditional spatial indices, however, fall short in accurately characterizing complex courtyards and local spatial features. To overcome these limitations, this study introduces pixel-level spatial indicators that effectively overcome these constraints. These indicators are implemented using computational geometry algorithms such as Ray Tracing, Flood Fill, and A*, enabling simulation of various courtyard spatial indicator maps. We also utilize Graphics Processing Unit (GPU)-based rapid thermal comfort simulation technology to generate thermal comfort maps. By applying data mining methods such as Partial Least Squares Regression (PLSR), Pearson correlation, and Nearest-neighbor interpolation, we explore the relationships between spatial indicators and thermal comfort, ultimately identifying key indicators and determining the guiding thresholds and influencing trends corresponding to heat discomfort frequency. Six key indicators and th emerge: Building View Factor (BVF), indicating building coverage visibility (prefer above 0.11); Solar Beam Fraction (BEAM), illustrating Summer solstice sun shading condition (prefer below 0.78); Averaged View Factor (AVF), showing overall visibility (prefer below 0.40); Directional Sky View Factor (DSVF(W)), reflecting sky visibility in a specific orientation (prefer below 0.73); Tree View Factor (TVF), denoting tree coverage visibility (prefer above 0.18); and Plan Water Ratio (PWR), signifying water surface proportion (aim for below 0.44). These insights, integrated into design tools, contribute to evidence-based microclimate regulation strategies, thereby enhancing urban residents' thermal comfort and overall well-being.

Market orientation practices of Ethiopian seed producer cooperatives

The practices of market orientation are context-specific. This paper focuses on the concept and practices of market orientation in Ethiopian seed producer cooperatives (SPCs). Based on 44 semi-structured interviews with experts and practitioners (SPC leaders and member farmers), we identify key market orientation elements in the SPCs’ context. Market orientation criteria in the Ethiopian SPC context could meaningfully be grouped into five underlying dimensions: quality of produce, business organization, external orientation, value addition activities, and supplier access. The understanding of market orientation by practitioners, particularly by member farmers, is limited to quality seed production. There is considerable recognition among respondents of the importance of customer orientation in the SPC context. Information on produced seeds, market prices, and profits is considered important. Information on competitors, although recognized by experts as important, is not really gathered by SPCs. Experts believe that the SPC committees should be responsible for information dissemination, but in practice, there is also an important role for the SPC chairman personally. Market-oriented practices in SPCs contribute to increasing employment and productivity and ensuring food security. Policymakers should devise strategies to support SPCs in becoming more market-oriented and successful in their business ventures. Specific market orientation practices by SPCs are discussed in detail.

Special criminology measures for preventing unvoluntary leaving a military unit or place of service

Voluntary abandonment of a military unit or place of service is a serious problem in the field of military discipline, operational readiness and defense capability of the army. This problem can have a negative impact on the effectiveness of military operations, the security of the country and trust in the representatives of the military management and defense sector. The spread of the specified type of criminal act forces lawyers to investigate the nature of the commission of the crime provided for in Art. 407 of the Criminal Code of Ukraine (hereinafter referred to as the Criminal Code of Ukraine), criminological characteristics, dynamics, the person-criminal, as well as prevention measures, among which it is possible to single out the special criminological orientation, which can be recognized as narrowly directed and designed to effectively solve the tasks.&#x0D; The article is devoted to the study of special criminological measures aimed at preventing cases of voluntary abandonment of military units or places of service by military personnel. In order to strengthen military discipline, reduce the number of deserters and increase the level of defense capability, various strategies and approaches are highlighted, in particular, the importance of psychological training and social adaptation of servicemen to overcome stress and improve their relationships is emphasized. Improving the quality of life and working conditions, as well as opportunities for professional growth, help to encourage military personnel to remain in the service. An important role is also played by strict discipline, control and information work regarding the consequences of committing voluntary abandonment of a military unit or place of service.&#x0D; When studying special criminological measures to prevent involuntary leaving of a military unit or place of service, it is worth noting that the spectrum of measures selected from the criminological catalog is focused on the system of determinants of war crimes in order to reduce their impact or completely eliminate them. The majority of legal scholars consider this criminological tactic to be the most effective in view of its orientation, structure and ultimate goal.

Biosynthesis of ternary NiCoFe2O4 nanoflowers: investigating their 3D structure and potential use in gene delivery

Multicomponent nanoparticle systems are known for their varied properties and functions, and have shown potential as gene nanocarriers. This study aims to synthesize and characterize ternary nickel–cobalt-ferrite (NiCoFe2O4) nanoparticles with the potential to serve as gene nanocarriers for cancer/gene therapy. The biogenic nanocarriers were prepared using a simple and eco-friendly method following green chemistry principles. The physicochemical properties of the nanoparticles were analyzed by X-ray diffraction, vibrating sample magnetometer, X-ray photoelectron spectroscopy, and Brunauer–Emmett–Teller. To evaluate the morphology of the nanoparticles, the field emission scanning electron microscopy with energy dispersive X-Ray spectroscopy, high-resolution transmission electron microscopy imaging, and electron tomography were conducted. Results indicate the nanoparticles have a nanoflower morphology with a mesoporous nature and a cubic spinel structure, where the rod and spherical nanoparticles became rose-like with a specific orientation. These nanoparticles were found to have minimal toxicity in human embryonic kidney 293 (HEK-293 T) cells at concentrations of 1 to 250 µg·mL–1. We also demonstrated that the nanoparticles could be used as gene nanocarriers for delivering genes to HEK-293 T cells using an external magnetic field, with optimal transfection efficiency achieved at an N/P ratio of 2.5. The study suggests that biogenic multicomponent nanocarriers show potential for safe and efficient gene delivery in cancer/gene therapy.Graphical

Integrating ultrasound transducers in polymer additive manufacturing technologies to fabricate engineered composite materials with tailored properties

Engineered composite materials that comprise filler material embedded in a polymer matrix may exhibit exotic physical properties that derive from the specific type, geometry, organization, and orientation of the particles in the matrix. However, existing techniques to manufacture such engineered materials are limited to laboratory scale, specific materials, and/or 2-D implementations, because it is challenging to organize and orient large quantities of particles into specific patterns. We utilize the acoustic radiation force associated with a standing ultrasound wave field to organize and orient particles of any material type dispersed in a fluid medium, into a user-specified pattern. We integrate the ultrasound wave field with several polymer additive manufacturing technologies to manufacture engineered materials in a layer-by-layer fashion, where in each layer we organize a user-specified pattern of filler using the acoustic radiation force. We demonstrate and discuss the integration of ultrasound transducers with several AM technologies and highlight their operating envelope and limitations. This research finds application in 3-D printing engineered materials with tailored properties by tuning the geometry, surface area, local packing density and, thus, the properties of the material.

Efficient Descriptor of Histogram of Ridges Orientation Delineate for Fingernail

Fingernails structure are rich in orientation, ridges and edge features. Inspired by Edge Histogram Descriptor (EHD), this paper presents an efficient orientation-based local descriptor, named histogram of ridges orientation delineate (HROD). HROD is based on the fact that human vision is sensitive to edge features for image perception. For a given image, HROD algorithm first execute and perform a pre-process i.e., re-sizing, filtering, enhancement, segmentation, edge detection and feature extraction. Then, finds oriented edge maps according to predefined orientations using a well-known edge operator mask (2×2 sub block) and obtains a ridges orientation delineate map by choosing an orientation with the maximum edge magnitude for each pixel. In the experiment on this research, five oriented edge maps were used to generate and detect the maximum edge orientation construction of each block, namely vertical, horizontal, diagonal 45°, diagonal 135° and isotropic (non-orientation specific) orientation. Experimental results on fingernail images show that the performance of HROD comparable with the state-of-the-art orientation-based methods (e.g., Gabor filter, histogram of oriented gradients, and local directional code). Furthermore, the proposed HROD algorithm has advantages of low feature dimensionality and fast implementation for a real-time fingernails orientation recognition system.

Exploring property orientation preferences and local variations

PurposeProperties with specific orientations are preferred in South Korea, depending on the real estate market. This preference is usually considered during property transactions and in designing buildings. Despite the importance of property orientation, the magnitude of preference for favored orientation has rarely been empirically estimated in the literature. This study attempts to estimate the value of favored orientation in a quantitative manner and interpret the results.Design/methodology/approachUsing a geographically weighted regression model, this study obtains nationwide property price data and estimates the strength of orientation preference, that is, the premium for favored orientation. Among the various property types, residential sites and forests were investigated because the orientation of these two property types is known to influence their sales prices in the Korean real estate market.FindingsThe results show that premiums for south-facing residential sites exist in the market, varying locally and ranging from zero to 13.2%, over residential sites with non-south orientations. The results for forests are mixed in that a south-facing forest commands a maximum of 33.1% premium in a certain region, over a forest with a non-south direction, while it also commands a maximum of 33.8% negative premium (discount) in another region, indicating significant local variations in premiums.Originality/valueThese findings are expected to be utilized in fields such as property valuation, house architecture and design.

Revealing the Orientation Selectivity of Tetrapyridyl-Substituted Porphyrins Constrained in Molecular "Klotski Puzzles".

Understanding and controlling molecular orientations in self-assembled organic nanostructures are crucial to the development of advanced functional nanodevices. Scanning tunneling microscopy (STM) provides a powerful toolbox to recognize molecular orientations and to induce orientation changes on surfaces at the single-molecule level. Enormous effort has been devoted to directly controlling the molecular orientations of isolated single molecules in free space. However, revealing and further controlling molecular orientation selectivity in constrained environments remain elusive. In this study, by a combination of STM imaging/manipulations and density functional theory calculations, we report the orientation selectivity of tetrapyridyl-substituted porphyrins in response to various local molecular environments in artificially constructed molecular "Klotski puzzles" on Au(111). With the assistance of STM lateral manipulations, "sliding-block" molecules were able to enter predefined positions, and specific molecular orientations were adopted to fit the local molecular environments, in which the intermolecular interaction was revealed to be the key to achieving the eventual molecular orientation selectivity. Our results demonstrate the essential role of local molecular environments in directing single-molecule orientations, which would shed light on the design of molecular structures to control preferred orientations for further applications in molecular nanodevices.