Flat Form Research Articles

Effect of electric fields on the electronic and thermoelectric properties of zigzag buckling silicene nanoribbons

We investigate the electronic structure and the thermoelectric transport properties of zigzag buckling silicene nanoribbons (BSiNRs) under the effect of external electric fields by means of atomistic simulations. The obtained results show that thanks to the buckling feature, zigzag BSiNRs have a stronger response to a vertical electric field compared to its flat form structure and also single-layer and bi-layer graphene nanoribbons with zigzag edges (GNRs & BGNRs). An inverse is observed in the case of a transverse electric field. Interestingly, the mutual effect when applying simultaneously the vertical and transverse fields induces a larger bandgap compared to individual ones. The mutual effect observed with zigzag BSiNRs is much more pronounced compared to that in zigzag BGNRs since the vertical field has a modest effect on zigzag BGNRs stemming from weak van der Waals interactions between graphene layers. Thermoelectric performance of zigzag BSiNRs is enhanced remarkably with electric fields in which the figure of merit ZT can be tuned to exceed 1. Interestingly, although the mutual impact of two external fields induces the largest Seebeck coefficient, it unveils that the vertical electric field is overall more efficient in enhancing the thermoelectric performance of zigzag BSiNRs. In addition, the enhancement of ZT is demonstrated to stem mainly from a dramatical degradation of the electron thermal conductance around the Fermi level. This study shows that zigzag BSiNRs in combination with external electric fields have favourable advantages for different electronic and thermoelectric applications.

Objecthood, Flat Form, Political Formalism: OOO and Ben Lerner’s Hatred of Poetry

This is a largely theoretical essay that, in conversation with Graham Harman’s energetic view of objects and Ben Lerner’s idiosyncratic theory of poetry, articulates the basic tenets of a “flat aesthetics” and then moves on to tease out this aesthetics’ ramifications in terms of form, reading thereof, and politics. When the object’s ontological dignity is acknowledged, as flat ontology does, and further, when literature too is dealt with as an object whose “intransitive” objecthood is recognized, literary form, Moraru argues, no longer reflects an elsewhere, a beyond, or other transcendent place, meaning, or design. Instead, this form deflects clarifying light “prismatically,” illuminating other objects, the bigger ensembles into which they are arranged, as well as the potential for new arrangements and worlds. Drawing from Lerner’s Hatred of Poetry, the article’s closing segment explains how this potentiality is already embedded in form qua object and sprouts dialectically from the limits within which literary forms inherently coalesce.

Mathematics teacher professional development program: fostering the skills for teaching meaningful mathematics through active learning during pandemic era

This is a report of a community service program for mathematics teachers. This program was held for fostering mathematics teachers’ skills in teaching meaningful through active learning using Google Classroom flat form. The program takes place in the Karanganyar region, Surakarta, Indonesia. The participants of this program were junior high school mathematics teachers from Karanganyar district. They were 28 participants. The workshop was held for three days: two days were face-to-face workshop and one day for the online workshop. There are four main topics for the workshop: (1) active learning; (2) Mathematical ion and Mathematical Skills; (3) Developing Question and Students Worksheet; and (4) Designing Active Learning on Google Classroom. The development of offline and online modules in the workshop was based on the theory of I-CARE model. I-CARE Model comprises of five components: Introduction, Connection, Application, Reflection, and Extension. The module consisted of a package for doing workshop which is: Powerpoint slides for offline and online courses; word documents for explaining the structure of the workshop and the worksheet of the participants; a Google classroom for online activity. Due to the pandemic session, the activities of discussion during the workshop were held on online flat form in Google Classroom.

KAJIAN TIPOLOGI POLA RUANG HUNIAN VERTIKAL DI JAKARTA

The population density in Jakarta can be seen from the number of people who are increasing every year and increasing the population density living in Jakarta. High urbanization affects the process of urban development, population development and the need for housing that requires a lot of land in the Jakarta area. The government and the private sector in dealing with these problems provide a decent place to live for the community by building vertical housing. Vertical development in the form of flats for residents is considered capable of increasing efficiency, effectiveness of space utilization and saving land so that land can be used for open space or other public spaces. In this study, the author tries to answer the problems regarding the identification of residential space patterns and the typology of flats in the three case studies. This study uses a qualitative descriptive method in which the author will describe and identify every aspect contained in this study based on the theoretical basis that was appointed as a guide. In this study, it was found that user activity in the flats resulted in groupings called zoning which included private, semi-private / semi-public, public, service areas, and circulation areas. Because the flat is a shared house in one building mass, the public zoning area tends to be larger and the residents gather in public areas that have been facilitated.

Application of the Generalized Bochner Technique to the Study of Conformally Flat Riemannian Manifolds

In this article, we discuss the global aspects of the geometry of locally conformally flat (complete and compact) Riemannian manifolds. In particular, the article reviews and improves some results (e.g., the conditions of compactness and degeneration into spherical or flat space forms) on the geometry “in the large" of locally conformally flat Riemannian manifolds. The results presented here were obtained using the generalized and classical Bochner technique, as well as the Ricci flow.

ОСОБЕННОСТИ АДАПТАЦИИ РАЗНЫХ ФОРМ СОСНЫ ОБЫКНОВЕННОЙ В УСЛОВИЯХ ДЛИТЕЛЬНОГО ИЗБЫТОЧНОГО УВЛАЖНЕНИЯ ПОЧВ

Intrapopulation variability of biochemical traits and cambial growth shows the adaptive ability of pine trees in different growth conditions. There is a genetically determined process of activation of defense systems in pine trees under unfavorable environmental conditions. Structural and functional rearrangement of the assimilating apparatus due to seasonal development ensures increased tree resilience and the passage of ontogenesis under the influence of stress factors within the reaction norm. This work aims at the study of adaptive ability of Pinus sylvestris L., which differs in the apophysis form of seed scales under conditions of prolonged excessive soil moistening in northern taiga. Studies were carried out in shrubby-sphagnum pine forests on boggy upland peat soils in the mouth of the Northern Dvina River. Trees with primary apophysis variations (forms) of seed scales were identified on the sample plots. Samples of 1, 2 and 3-year-old needles were taken in order to determine biochemical traits in 10 trees of each pine form isolated by type of apophysis, in different calendar periods (from May to December, 2016). The content of free proline, water-soluble proteins, and ascorbic acid was determined in the needles by the spectrophotometric method. Wood cores were sampled from 52 trees at a height of 1.3 m and width of the annual layer was determined in each selected form. Relative dendrochronological parameters were calculated along with the absolute value of radial growth. Meteorological parameters at the study sites (air temperature and precipitation) were determined from data of the Arkhangelsk Weather Station. The studies show the similarities and differences of trees of various forms in the seasonal dynamics of stress metabolites content in needles of different ages in relation to meteorological factors and phenological phases of pine vegetative organs in the Northern Dvina mouth. Trees with flat form of apophysis inherent more intensive accumulation of ascorbic acid and proline in 2-year-old needles in late October. This indicates increased activation of their protective reactions before overwintering compared to trees with convex form of apophysis. Patterns of variability in cambial growth of trees of different forms in time series were found. It was observed that trees with flat form of apophysis are more strongly affected by maladaptive (stressful) environmental factors.

Doubling the FOV of AR displays with a liquid crystal polarization-dependent combiner.

We propose a glasses-like augmented reality (AR) display with an extended field-of-view (FOV) using a liquid crystal polarization-dependent combiner (PDC). Such a PDC consists of two polarization volume lenses (PVLs) that are based on patterned liquid crystals to selectively control the beam path according to the right-handed or left-handed circularly polarized light. By encoding the left and right half of the FOV into two orthogonal polarization states, the overall horizontal FOV can be doubled while maintaining an ultrathin and flat form factor. Based on this multiplexing concept, the FOV can be further extended by integrating more PVLs with different diffraction angles. The proposed configuration with polarization-time multiplexing provides a promising solution for overcoming the limited FOV issue in AR displays.

Nuclear suppression from coherent J/ψ photoproduction at the Large Hadron Collider

Using the data on coherent J/ψ photoproduction in Pb-Pb ultraperipheral collisions (UPCs) obtained in Runs 1 and 2 at the Large Hadron Collider (LHC), we determined with a good accuracy the nuclear suppression factor of SPb(x) in a wide range of the momentum fraction x, 10−5≤x≤0.04. In the small-x region x<10−3, our χ2 fit favors a flat form of SPb(x)≈0.6 with approximately a 5% accuracy for x=6×10−4−10−3 and a 25% error at x=10−4. At the same time, uncertainties of the fit do not exclude a slow decrease of SPb(x) in the small-x limit. At large x, SPb(x) is constrained to better than 10% precision up to x=0.04 and is also consistent with the value of SPb(x) at 〈x〉=0.042, which we extract from the Fermilab data on the A dependence of the cross section of coherent J/ψ photoproduction on fixed nuclear targets. The resulting uncertainties on SPb(x) are small, which indicates the potential of the LHC data on coherent charmonium photoproduction in Pb-Pb UPCs to provide additional constraints on small-x nPDFs. We explicitly demonstrate this using as an example the EPPS16 and nCTEQ16 nuclear parton distribution functions, whose uncertainties decrease severalfold after the Bayesian reweighting of the discussed UPC data.

Employing the flat pattern in the implementation of bachelor students graduation project in the Faculty of Home Economics

The ready-made garment industry goes through several interrelated stages, and the pattern stage is considered one of the most important stages that the industry goes through. The basic pattern also represents the main factor on which the quality of the product as a whole depends, and in which the element of control and comfort must be available. Good control is one of the important matters that determine the final shape of clothes. Controlled clothing shows the good shape of the body and helps to hide defects, while any error or weakness in the control process distorts the general appearance (10), and the preparation of the flat basic form requires two basic elements to adjust it in a correct way, they are accurate sizes It represents the body and the additional amount that the body needs to give it freedom of movement in each of its parts and It is used in the preparation of the pattern on either standard size tables or personal sizes, and the success of the flat basic model depends on the lines, curves and darts that represent the basis for controlling the shape of the dress on the body. The pattern is also a map or an illustration for recording sound information about proportions, shape, and position of the main body. It also represents a translation of body measurements including rotations and lengths in the form of a set of lines and curves drawn on paper or cloth to represent the dimensions of the human body according to the measurements that were taken for him in advance. The graduation project also represents a big problem for female students in drawing the pattern, especially if the project is for special occasion clothes because it requires good preparation of the pattern and adjusting the sizes, which is why I was invited to think about employing a flat pattern for drawing and implementing the project in the bachelor's stage. One of the most important problems of the current research was how to employ the flat pattern in implementing and controlling the graduation project The research aims to overcome the pattern problems in preparing and implementing the final project for the undergraduate stage The research assumes that there are statistically significant differences between the evaluation of the models implemented from employing the flat pattern in achieving control in terms of the general shape according to the opinions of specialists. One of the most important results of the research was the presence and statistically significant differences between the models implemented from employing the flat pattern in achieving control in terms of the general shape according to the opinions of specialists, where Model No. (3) obtained the best results as it obtained a quality factor of 100% and Model No. (5) On the lowest results, as it got a quality factor of 84% and from One of the most important recommendations of the research is to pay attention to the application of various methods of pattern drawing in the implementation of different styles of clothing.

Legal Vacancies in the Transfer of Rights to Class III State Houses in the Form of Flats

Class III state houses are in the form of flats including those whose rights can be transferred either independently and / or in the form of Apartment Units with or without their land by means of leasing, there are sectoral regulations that regulate these matters such as rules regarding state houses, flats, state property, and land registration have the impact of disharmony and legal vacancies. The research method used is the juridical-normative research method. The final part of this research concludes that the validity of Class III State Houses in the Form of Flats must meet the requirements stipulated in statutory regulations, including the status of land rights, the distribution of apartment elements such as shared land, shared objects, and parts together as regulated in the Law on Flats, the existence of the Association of Owners and Occupants of Apartment Units (&lt;em&gt;PPPSRS&lt;/em&gt;) which is formed by the agency concerned, as well as the issuance of the Occupancy Permit of Class III State Houses in the Form of Flats. Holders of occupancy permits have rights, namely SIP Holders of State Houses of Category III can apply for transfer of Class III State Houses to the relevant Minister, protection of efforts to apply for transfer of these rights is preventive based on positive law in Indonesia which regulates the transfer can be carried out. There was a vacuum and disharmony in the Legislation regarding the Transfer of Rights to Group III State Houses in the Form of Flats, seen from the existence of Regulations that govern the transfer as in Presidential Regulation Number 11 of 2008, on the other hand there are no regulations governing the transfer of Class III State Houses. In the form of a Flat with the implications regarding the status of the Flat Ownership Unit (&lt;em&gt;SHM Sarusun&lt;/em&gt;) as well as the status of joint shares, common objects, and common land, whether it can be transferred and managed by the Association of Owners and Residents of Flats (&lt;em&gt;PPPSRS&lt;/em&gt;) or still become State Property

Deployable truss structure with flat-form storability using scissor-like elements

Deployable structures have received much attention in the building of large structural systems in space due to the limitations in the packaging capabilities of satellites and launch vehicles. Among various categories of deployable structures, deployable truss structures are most commonly used because of their high stiffness and strength. However, deployable truss structures typically have low packaging efficiency. To improve the packaging efficiency of deployable truss structures, this paper proposes a deployable truss structure that can be stored in a flat form. The proposed structure has a high packaging efficiency while preserving the major advantage of conventional deployable truss structures. The deployment motion is analyzed through a kinematic model, and the packaging efficiency is calculated and compared to a conventional deployable truss structure. The dynamic model of the proposed structure is derived and the deployment characteristics are investigated considering the driving force for deployment and gravity. Finally, the feasibility of the proposed structure is demonstrated with a deployment test of the prototype.

A normal form for two-input forward-flat nonlinear discrete-time systems

We show that every forward-flat nonlinear discrete-time system with two inputs can be transformed into a structurally flat normal form by state- and input transformations. This normal form has a triangular structure and allows to read off the flat output, as well as a systematic construction of the parameterisation of all system variables by the flat output and its forward-shifts. For flat continuous-time systems, no comparable normal form exists.

Metagenomics-Based Approach to Source-Attribution of Antimicrobial Resistance Determinants - Identification of Reservoir Resistome Signatures.

Metagenomics can unveil the genetic content of the total microbiota in different environments, such as food products and the guts of humans and livestock. It is therefore considered of great potential to investigate the transmission of foodborne hazards as part of source-attribution studies. Source-attribution of antimicrobial resistance (AMR) has traditionally relied on pathogen isolation, while metagenomics allows investigating the full span of AMR determinants. In this study, we hypothesized that the relative abundance of fecal resistome components can be associated with specific reservoirs, and that resistomes can be used for AMR source-attribution. We used shotgun-sequences from fecal samples of pigs, broilers, turkeys- and veal calves collected across Europe, and fecal samples from humans occupationally exposed to livestock in one country (pig slaughterhouse workers, pig and broiler farmers). We applied both hierarchical and flat forms of the supervised classification ensemble algorithm Random Forests to classify resistomes into corresponding reservoir classes. We identified country-specific and -independent AMR determinants, and assessed the impact of country-specific determinants when attributing AMR resistance in humans. Additionally, we performed a similarity percentage analysis with the full spectrum of AMR determinants to identify resistome signatures for the different reservoirs. We showed that the number of AMR determinants necessary to attribute a resistome into the correct reservoir increases with a larger reservoir heterogeneity, and that the impact of country-specific resistome signatures on prediction varies between countries. We predicted a higher occupational exposure to AMR determinants among workers exposed to pigs than among those exposed to broilers. Additionally, results suggested that AMR exposure on pig farms was higher than in pig slaughterhouses. Human resistomes were more similar to pig and veal calves’ resistomes than to those of broilers and turkeys, and the majority of these resistome dissimilarities can be explained by a small set of AMR determinants. We identified resistome signatures for each individual reservoir, which include AMR determinants significantly associated with on-farm antimicrobial use. We attributed human resistomes to different livestock reservoirs using Random Forests, which allowed identifying pigs as a potential source of AMR in humans. This study thus demonstrates that it is possible to apply metagenomics in AMR source-attribution.

On a Flat Triangular Form Based on the Extended Chained Form

In this paper, we present a structurally flat triangular form which is based on the extended chained form. We provide necessary and sufficient conditions for an affine input system with two inputs to be static feedback equivalent to the proposed triangular form, and thus a sufficient condition for an affine input system to be flat.

Сезонная стоянка русских переселенцев в Ишимской степи Шадринский Маслозавод

Purpose. The sites of the Russian colonization period continued to stay insufficiently known in Western Siberia. The author considers new materials of excavation of two Russian migrant dwellings for studying local and chronological dynamic of life-support. Results. This site was localized at the bank of Shadrinskoye Lake in the steppe region of Ishim River valley in the Western Siberia region. Buildings stood alone and were not synchronic. They were small in size – 10 m2 and 18 m2, of rectangular form, and of varying depth. They had plank floors, a gable roof and access to the lake. After the fire, a shallow half-dugout dwelling with a larger area was built in place of the deep dugout, which eventually burned down too. The iron axes, traces of drying of nets with sinkers arranged in the complexes, the bones of domestic animals and fish were found. It is interesting that the sinkers are of different forms: biconic, cylindrical, trapeziform with one hole and flat oval form without a hole. The last type was used with wrapped birch bark. Two pots looked like 18th century brown Russian professional pottery. Despite fishing of the habitants, the bones of animals from food leftovers show the developing cattle breeding with predominant livestock and pig breeding in the local community. The chronology of this site was defined based on the periods of function of iron axes with the wide and the rounded off blades, ceramic and adobe clay brick (which had not been imported until much later) at the beginning of the 18th century. Conclusion. The site is interesting as a source of the early stage of Russian development of Siberia and as an ordinary life-supporting complex. It shows the combination of production branches with the development in fishing and game bird hunting in their natural habitat in the ecological lake systems of the steppe zone. Fishing for smaller fish was conducted for the purposes of diversifying the food ration.

Frozen naturae: floral motives in Mayan terracotta of the First Millennium A.D.

The article is devoted to the analysis of various plant motives on Mayan terracotta figurines of the 1st millennium A.D. Two basic types of plant motives are identified, which are represented by plants that are independent subjects of the image, as well as those that are secondary in nature, supplementing the plot composition. A characteristic is given of voluminous, bas-relief and flat forms of the image with a detailed characteristic of their localization, which differ in great variety: costume, hair-style, jewelry, headdress, tattoo, attributive objects, weapons, etc. The Jaina materials provide statistical data on the frequency of occurrence of all the above indicators. Attention is paid to the characteristics of individual plants and their elements, both domesticated and growing near humans, which can be identified and correlated with real prototypes. Quantitative and percentage characteristics of the occurrence of various plants are given, indicating their names in cases when they are definable. Iconographic features in the images of plants are described in detail, consisting both in &amp;quot;photographic&amp;quot; copying of the features of real plants, and in significant artistic stylization of images characteristic rather of images on stelae painted with polychrome ceramics. Conclusions are made about the features of images of plant motives, which are expressed in places of localization, their role in the plot and composition of terracotta, and the semantic load that the visual embodiment of a particular plant or its image carried.

CALCULATION OF THE STABILITY FLAT SHAPE BENDING OF THE RACING CAR FRAME STRUCTURAL ELEMENTS IN THE CIRCULAR ARCHES FORM

To increase the strength and rigidity of the characteristics, the articulated elements of structural racing cars have a large ratio of axial moments of inertia of the cross sections. The method of solving boundary value problems of stability of the flat form of bending of racing car structural elements in the form of circular arches with sections having several axes of symmetry is obtained. In Formula Class cars, these elements are most responsible for the safety of the pilot. The system of integration of two differential equations of stability of the specified constructive elements of a car racing frame in the form of circular arches or curvilinear cores is executed in work. The numerical-analytical method of limiting elements developed by Professor V.F. Orobey was used for the research. The article presents two variants of systems of fundamental orthonormal functions for differential equations of stability of circular arches with constant coefficients obtained during research. The problem of stability of structural elements of racing cars on the geometry corresponding to circular arches is solved by a numerical method acquiring rapid development; the method has theoretically proved exact decisions. The equation obtained in the course of research is applicable to the solution of very complex problems of stability of various structures containing rods delineated along the arc of a circle. The equations can be used to solve very complex problems of stability of various structures containing rods drawn along the arc of a circle. Such structural elements are used in many designs of industrial engineering.

Chatbot Designed for Graduate Students s Guidance Service

The main purpose of this study aimed to develop the chatbot designed for the graduate students’ guidance services, which were divided into two major phases: Phase 1: The development of chatbot designed for the graduate students’ guidance service, and Phase 2: The effects of chatbot’ s implementation for the graduate students’ guidance service. The data were statistically analyzed using mean, standard deviation and content analysis. The development of chatbot designed for graduate students’ guidance services conceptualized with the theory of design and the development of machine learning process together with the theory of flat “dialogflow”-called flat form technology taken from Google. In academic collaborations with graduate students studying at the master’s and doctoral levels, as well as the measurement and evaluation-related experts considered the suitability of the chatbot-oriented question and answer structures. Specifically, the educational technology and information technology-related experts’ tryout and evaluation were all implemented for its effectiveness of chatbots. The findings of the study revealed that all the aspects of the applications of chatbot, with its 𝑥 of 4.66 were rated at a very effective level as compared to all the aspects, it showed that the experts’ similar opinions toward the graduate students’ guidance services were mostly found. On the other hands, the graduate students’ satisfactions on their graduate students’ chatbot services, with its 𝑥 of 4.52 were all rated at a very high level as compared to each aspect, it showed that the experts’ similar opinions toward the graduate students’ guidance services were mostly found. The results of the study have shown that the chatbots designed to provide the graduate students’ advices were only one essential element that helped promote its research processaccording to comparing the correlations of thesis progress and the frequency use of chatbots. Also, in terms of designing the structures of questions with its answers, all the aspects of graduates’ instructional management should be extensively manifested for making them more effective.

Bacterial Nanocellulose-Enhanced Alginate Double-Network Hydrogels Cross-Linked with Six Metal Cations for Antibacterial Wound Dressing.

Alginate (Alg) and bacterial nanocellulose (BNC) have exhibited great potential in biomedical applications, especially wound dressing. Non-toxicity and a moisture-maintaining nature are common features making them favorable for functional dressing fabrication. BNC is a natural biopolymer that promotes major advances to the current and future biomedical materials, especially in a flat or tubular membrane form with excellent mechanical strength at hydrated state. The main drawback limiting wide applications of both BNC and Alg is the lack of antibacterial activity, furthermore, the inherent poor mechanical property of Alg leads to the requirement of a secondary dressing in clinical treatment. To fabricate composite dressings with antibacterial activity and better mechanical properties, sodium alginate was efficiently incorporated into the BNC matrix using a time-saving vacuum suction method followed by cross-linking through immersion in separate solutions of six cations (manganese, cobalt, copper, zinc, silver, and cerium). The results showed the fabricated composites had not only pH-responsive antibacterial activities but also improved mechanical properties, which are capable of acting as smart dressings. All composites showed non-toxicity toward fibroblast cells. Rat model evaluation showed the skin wounds covered by the dressings healed faster than by BNC.

A structurally flat triangular form based on the extended chained form

ABSTRACT In this paper, we present a structurally flat triangular form which is based on the extended chained form. We provide a complete geometric characterisation of the proposed triangular form in terms of necessary and sufficient conditions for an affine input system with two inputs to be static feedback equivalent to this triangular form. This yields a sufficient condition for an affine input system to be flat.