General Point Research Articles

A Coarse-to-Fine Transformer-Based Network for 3D Reconstruction from Non-Overlapping Multi-View Images

Reconstructing 3D structures from non-overlapping multi-view images is a crucial task in the field of 3D computer vision, since it is difficult to establish feature correspondences and infer depth from overlapping parts of views. Previous methods, whether generating the surface mesh or volume of an object, face challenges in simultaneously ensuring the accuracy of detailed topology and the integrity of the overall structure. In this paper, we introduce a novel coarse-to-fine Transformer-based reconstruction network to generate precise point clouds from multiple input images at sparse and non-overlapping viewpoints. Specifically, we firstly employ a general point cloud generation architecture enhanced by the concept of adaptive centroid constraint for the coarse point cloud corresponding to the object. Subsequently, a Transformer-based refinement module applies deformation to each point. We design an attention-based encoder to encode both image projection features and point cloud geometric features, along with a decoder to calculate deformation residuals. Experiments on ShapeNet demonstrate that our proposed method outperforms other competing methods.

Predictors of the Actual Final Grade in Mathematics Subject of International Baccalaureate Diploma Programme Students in Surabaya, Indonesia

This study tried to investigate what are the possible indicators of the performance of International Baccalaureate Diploma Programme Students taking Mathematics Standard Level in an international school in Surabaya. The research made use of secondary data gathered from the school such as the scores of the students and together with their profile. The data covered academic years 2014 – 2019. Other than the secondary data and information gathered from the administration office and curriculum coordinators, The researcher also gathered the progress scores of the students from their subject teachers, one of whom is yours truly. Descriptive-correlational research design was used to analyze the data. Data collected were analyzed and interpreted using frequency, percentage, mean, standard deviation and Pearson Product Moment Correlation. One-way Analysis of Variance was also used to check if there is significant difference among mock exam score for Predicted Grade (PG), General Point Average (GPA) and final grades. Among the socio-demographic characteristics of the respondents, only gender significantly related to the final grade. Both GPA and mock exam predicted grades indicated that both grades have strong significant relationship to the final external examination grades of the students.

Carboxyhemoglobin half-life toxicokinetic profiles during and after normobaric oxygen therapy: On a swine model

Investigations on acute carbon monoxide (CO) poisoning struggle to highlight a relevant discriminant criterion related to CO poisoning severity for predicting complications, such as delayed neurological syndromes. In this context, it remains difficult to demonstrate the superiority of one method of oxygen (O2) administration over others or to identify the optimal duration of normobaric 100% oxygen (NBO) treatment. Myoglobin, as hemoglobin, are a potential binding site for CO, which could be a source of extravascular CO storage that impacts the severity of CO poisoning. It is not possible in routine clinical practice to estimate this potential extravascular CO storage. Indirect means of doing so that are available in the first few hours of poisoning could include, for example, the carboxyhemoglobin half-life (COHbt1/2), which seems to be influenced itself by the level and duration of CO exposure affecting this store of CO within the body. However, before the elimination of CO can be assessed, the COHbt1/2 toxicokinetic model must be confirmed: research still debates whether this model mono- or bi-compartmental. The second indirect mean could be the assessment of a potential COHb rebound after COHb has returned to 5% and NBO treatment has stopped. Moreover, a COHb rebound could be considered to justify the duration of NBO treatment. On an experimental swine model exposed to moderate CO poisoning (940 ppm for ±118 min until COHb reached 30%), we first confirm that the COHb half-life follows a bi-compartmental model. Secondly, we observe for the first time a slight COHb rebound when COHb returns to 5% and oxygen therapy is stopped. On the basis of these two toxicokinetic characteristics in favor of extravascular CO storage, we recommend that COHbt1/2 is considered using the bi-compartmental model in future clinical studies that compare treatment effectiveness as a potential severity criterion to homogenize cohorts of the same severity. Moreover, from a general toxicokinetic point of view, we confirm that a treatment lasting less than 6 hours appears to be insufficient for treating moderate CO poisoning.

The physical interpretation of point interactions in one-dimensional relativistic quantum mechanics

We investigate point interactions (PIs) in one-dimensional relativistic quantum mechanics using a distributional approach based on Schwartz’s theory of distributions. From the properties of the most general covariant distribution describing relativistic PIs (RPIs) we obtain the physical parameters associated with the point potentials that behave as a scalar, a pseudo-scalar and a vector under Lorentz transformations. Then, we establish a one-to-one relationship between these physical parameters and the well-known set of four parameters giving the boundary conditions at the singular point(s), which define a self-adjoint Hamiltonian. By considering the non-relativistic limit, we obtain the most general PI in the Schrödinger equation in terms of these four physical point potentials. Finally, we study the symmetries of the RPIs under space inversion, time reversal and charge conjugation, and investigate how requirements of invariance under these symmetry transformations can be used to restrict the set of physical parameters.

Tree Species Classification Based on Upper Crown Morphology Captured by Uncrewed Aircraft System Lidar Data

The application of lidar data to assist with forest inventory is common around the world. However, the determination of tree species is still somewhat elusive. Lidar data collected using UAS (uncrewed aircraft systems) platforms offer high density point cloud data for areas from a few to several hundred hectares. General point cloud metrics computed using these data captured differences in the crown structure that proved useful for species classification. For our study, we manually adjusted plot and tree locations to align field trees and UAS lidar point data and computed common descriptive metrics using a small cylindrical sample of points designed to capture the top three meters and leader of each tree. These metrics were used to train a random forest classifier to differentiate between two conifer species, Douglas fir and western hemlock, common in the Pacific Northwest region of the United States. Our UAS lidar data had a single swath pulse density of 90 pulses/m2 and an aggregate pulse density of 556 pulses/m2. We trained classification models using both height and intensity metrics, height metrics alone, intensity metrics alone, and a small subset of five metrics, and achieved overall accuracies of 91.8%, 88.7%, 78.6%, and 91.5%, respectively. Overall, we showed that UAS lidar data captured morphological differences between the upper crowns of our two target species and produced a classification model that could be applied over large areas.

Handbike for Daily Use, Sport, and Rehabilitation Purposes: A Literature Review of Actuation and Technical Characteristics

With respect to alternative devices like traditional wheelchairs, handbikes can offer advantages from biomechanical and physiological perspectives, to several kinds of users. Assuring high mechanical efficiency and homogeneous force distributions along cycles, and being suitable for indoor and outdoor activities, these systems are used for rehabilitation, sports, and daily applications. From a technical perspective, their main characteristics can vary with the device final purpose and operational context. This review aims to provide an overall outline of handbikes in the literature from a general and comprehensive point of view, up until 2022. The analysis is performed (i) with a systematic approach, without a priori limitations on document type and content focus, and (ii) to identify the areas of interest for the scientific development of these systems. A systematic evaluation method for the identification and analysis of the documents was designed and implemented and the selection criteria, as well as the rationale for the procedure, are described. A specific taxonomy was defined and applied for the subsequent analysis, and each category is specifically evaluated and described, detailing the main outcomes of the literature analysis and relative discussion. Particular attention is paid to actuation strategies and propulsion efficiency. Finally, the main results of the work and future developments for handbikes are briefly synthesized.

Bacillus anthracis, "la maladie du charbon", Toxins, and Institut Pasteur.

Institut Pasteur and Bacillus anthracis have enjoyed a relationship lasting almost 120 years, starting from its foundation and the pioneering work of Louis Pasteur in the nascent fields of microbiology and vaccination, and blooming after 1986 following the molecular biology/genetic revolution. This contribution will give a historical overview of these two research eras, taking advantage of the archives conserved at Institut Pasteur. The first era mainly focused on the production, characterisation, surveillance and improvement of veterinary anthrax vaccines; the concepts and technologies with which to reach a deep understanding of this research field were not yet available. The second period saw a new era of B. anthracis research at Institut Pasteur, with the anthrax laboratory developing a multi-disciplinary approach, ranging from structural analysis, biochemistry, genetic expression, and regulation to bacterial-host cell interactions, in vivo pathogenicity, and therapy development; this led to the comprehensive unravelling of many facets of this toxi-infection. B. anthracis may exemplify some general points on how science is performed in a given society at a given time and how a scientific research domain evolves. A striking illustration can be seen in the additive layers of regulations that were implemented from the beginning of the 21st century and their impact on B. anthracis research. B. anthracis and anthrax are complex systems that raise many valuable questions regarding basic research. One may hope that B. anthracis research will be re-initiated under favourable circumstances later at Institut Pasteur.

Materials Enabling Methane and Toluene Gas Treatment.

This paper summarizes the latest research results on materials for the treatment of methane, an important greenhouse gas, and toluene, a volatile organic compound gas, as well as the utilization of these resources over the past two years. These materials include adsorption materials, catalytic oxidation materials, hydrogen-reforming catalytic materials and non-oxidative coupling catalytic materials for methane, and adsorption materials, catalytic oxidation materials, chemical cycle reforming catalytic materials, and degradation catalytic materials for toluene. This paper provides a comprehensive review of these research results from a general point of view and provides an outlook on the treatment of these two gases and materials for resource utilization.

Boudica, the Warrior Queen, as seen through DevianArt: Why pop culture proves to be so informative

The paper aims to investigate the image of the Warrior Queen Boudica (Boudicca, Boadicea) in contemporary pop culture through the lens of the website DeviantArt (®), providing valuable information about the countries and the gender of the creators, along with the possibility of studying the creative scene in real-time by artists who are most often not professionals but young creators and even more importantly, young female creators. From a general point of view, Boudica-the-Warrior is winning the battle in the other representations of Boudica and certainly over Boudica-the-Mother. But while there is hardly any difference when it comes to carrying weapons, this is not the case for the portrayal of aggression. Here, the rate is twice as high among male contributors. The difference is even greater for the sexualization of Boudica’s body. Several general trends observed for Boudica are also true for Cleopatra. Each is represented more often standing alone. Each is more often described as a powerful embodiment of strong women: in arms for Boudica, with felines for Cleopatra. And in each case, their images have been simplified in order to be understood by large audiences. A sexualized Egyptian (i.e. pharaonic) woman is now necessarily Cleopatra. The same holds true for Boudica: a warrior woman with red hair and blue paint on her visage seems only to refer to her.

A General Deep Learning Point–Surface Fusion Framework for RGB Image Super-Resolution

Hyperspectral images are usually acquired in a scanning-based way, which can cause inconvenience in some situations. In these cases, RGB image spectral super-resolution technology emerges as an alternative. However, current mainstream spectral super-resolution methods aim to generate continuous spectral information at a very narrow range, limited to the visible light range. Some researchers introduce hyperspectral images as auxiliary data. But it is usually required that the auxiliary hyperspectral images have the same spatial range as RGB images. To address this issue, a general point–surface data fusion method is designed to achieve the RGB image spectral super-resolution goal in this paper, named GRSS-Net. The proposed method utilizes hyperspectral point data as auxiliary data to provide spectral reference information. Thus, the spectral super-resolution can extend the spectral reconstruction range according to spectral data. The proposed method utilizes compressed sensing theory as a fundamental physical mechanism and then unfolds the traditional hyperspectral image reconstruction optimization problem into a deep network. Finally, a high-spatial-resolution hyperspectral image can be obtained. Thus, the proposed method combines the non-linear feature extraction ability of deep learning and the interpretability of traditional physical models simultaneously. A series of experiments demonstrates that the proposed method can effectively reconstruct spectral information in RGB images. Meanwhile, the proposed method provides a framework of spectral super-resolution for different applications.

The Urgency of Establishing Constitutional Court Procedural Law

The formulation of procedural law within the constitutional court is a crucial requirement, as stipulated by Article 24 C paragraph (6) of the 1945 Constitution of the Republic of Indonesia. While the Constitutional Court Procedural Law is outlined in Law No. 24 of 2003 on the Constitutional Court, it merely provides general points. Special aspects, aligned with individual case characteristics, are deferred to the Constitutional Court for independent regulation based on Article 86 and the Explanatory Note to Law No. 24 of 2003. However, this delegation is inappropriate as procedural law should be governed by Law-level regulations, not by Constitutional Court Regulations (PMK). To date, the Constitutional Court continues to produce the Procedural Law in the form of PMKs. This study employs a normative juridical research method, with a statutory and conceptual approach, and conducts analysis in a qualitative descriptive manner. This paper concludes, firstly, that the creation of procedural law within the constitutional court holds philosophical, juridical and sociological significance. Secondly, the drafting process of the constitutional court’s procedural law must adhere to the process of forming sound laws and regulations and contain materials in line with their level as prescribed in the legislation.

Fabrication of Faceted Metal Nanocrystal Electrodes By Solid-State Dewetting

Electrochemical reactions are electrode-structure sensitive and hence microstructural properties of the (electro)-catalysts such as size, shape, exposed facets, and grain boundaries, among others, strongly affect the activity, selectivity, and stability.1, 2 Conventional methods based mainly on wet-chemistry have been widely adopted to synthesize nanocrystal (NC) electrocatalysts, and proved suitable to control their features. However, these methods require several synthesis steps, which increase the production time and complexity, and resulting particles often feature a complex composition (due to impurities such as ligands or templating agents) and suffer from durability issues, due e.g. to particle detachment from the substrates.We explore solid-state dewetting (SSD) as an alternative way to produce metal nanocrystal electrocatalysts while overcoming various challenges intrinsic of conventional approaches.3, 4 Dewetting is the heat induced agglomeration of thin metal films into particles. Taking Pt as a case study, we have investigated the effect of various SSD parameters such as metal film thickness, substrate crystallographic features, and dewetting conditions (time/temperature/atmosphere) on the physicochemical properties of the resulting dewetted metal NCs. Under optimized conditions, dewetting forms monodispersed faceted Pt nanocrystals of tunable size. Low- or high-index facets can be designed (as shown in the figure below) by tuning the substrate orientation and dewetting conditions (e.g., T, dewetting gas). In general, dewetted Pt NCs show higher (ESCA-normalized) activity towards hydrogen evolution reaction (HER) compared to Pt thin films, and their mass activity is comparable to the state-of-the-art Pt/C. The talk will delve into correlations between microstructure (grain size, shape and facets etc.) and the electrochemical performance of dewetted NCs.From a general point of view, dewetted NCs show intriguing electrochemical and mechanical properties, and hence dewetting appears to be a promising approach for preparing active and robust nanostructured (electro)-catalysts for various applications. In ongoing work, we investigate dewetting to deposit catalysts on gas diffusion layer (GDL) electrodes and test their performance in PEM lab-scale electrolyzers. Figure 1

A phantom on a rational surface

We construct a non-full exceptional collection of maximal length consisting of line bundles on the blow-up of the projective plane in 10 general points. As a consequence, the orthogonal complement of this collection is a universal phantom category. This provides a counterexample to a conjecture of Kuznetsov and to a conjecture of Orlov.

DISCOURSE OF IDENTITY AND COMMUNITY: THE TALIBAN’S WOMEN EDUCATION BAN POLICY IN AFGHANISTAN

Online newspaper is one of the media in the present time that can convey modified information according to the ideology of the institution. It can create a public opinion amongst its readers depending on how the media represents the state of the world. In addition, Stuart Hall (1997) clarifies that no accurate representation exists because there are many different ways to represent them depending on the person. The news discourse within a media can represent a problem within a nation from the perspective of ordinary people in which it may portray more about its effect on their daily life, but can also represent the problem from a general point of view in which it may only portray the general scale of effects on the people. To understand the meaning or ideology behind the text, one would need to conduct a discourse analysis. It is noted that Critical Discourse Analysis (CDA) is one of the more appropriate perspectives that can be used in analysing discourse in a news item. According to van Dijk (2008), CDA is a discourse investigation that investigates social power, dominance, and imbalance. There are many frameworks within the category of CDA. However, this essay only uses the framework proposed by Theo van Leeuwen, which is social actor analysis..
 
 Keywords: newspaper, CDA

Cox rings of blow-ups of multiprojective spaces

AbstractLet $$X^{1,n}_r$$ X r 1 , n be the blow-up of $$\mathbb {P}^1\times \mathbb {P}^n$$ P 1 × P n in r general points. We describe the Mori cone of $$X^{1,n}_r$$ X r 1 , n for $$r\le n+2$$ r ≤ n + 2 and for $$r = n+3$$ r = n + 3 when $$n\le 4$$ n ≤ 4 . Furthermore, we prove that $$X^{1,n}_{n+1}$$ X n + 1 1 , n is log Fano and give an explicit presentation for its Cox ring.

PERLINDUNGAN HUKUM KREDITUR DAN DIBITUR MENURUT UNDANG-UNDANG NOMOR 21 TAHUN 2008 TENTANG PERBANKAN SYARIAH

This research aims to find out and analyse the legal protection of creditors and debtors according to law number 21 of 2008 concerning sharia banking. In this research, the researcher formulated the problem, what is the form of legal protection for creditors and debtors in sharia banking, and how to implement prudential principles in anticipating bad credit in sharia banking. This research requires normative juridical research which researchers carry out by examining library materials or secondary data. In this research, a statutory approach is used which is related to the principle of prudence in sharia banking. According to Law no. 21 of 2008 concerning Sharia Banking. Next, using conceptual (conceptual approach) is used to examine general points of view and principles that apply in law, such as literature or references that are relevant to the research object. The research results show that the banking principle of prudence is a principle that is anticipatory in preventing the possibility of banks suffering losses in distributing funds to customers, then the principle of prudence in carrying out its business activities and is obliged to uphold and adhere to this principle further if in In the most common case, such as a debtor stumbling over bad credit, resolution efforts can be taken in two ways, namely litigation efforts through the courts, and non-litigation efforts through preventive efforts, namely actions to anticipate the emergence of bad credit, early warnings, and negotiation efforts.

General point load weight function for semi-elliptical surface cracks in round bars

Offshore mooring chains are continuously subjected to cyclic environmental loadings, resulting in fatigue cracks that always develop at the surface and grow across the circular cross-sections. To analyse the fatigue crack growth in a mooring chain based on a fracture mechanics-based approach, the evaluation of stress intensity factors (SIFs) of surface cracks in the chain segments becomes essential. A general point load weight function of SIFs for semi-elliptical surface cracks in straight and curved round bars was derived in this study. Parametric three-dimensional finite element (FE) models were developed to calculate the SIF solutions for determining the unknown parameters in the weight function. The analysis matrix covered wide ranges of aspect ratios 0.1 ≤ a/c ≤ 2.0, relative crack depths 0.03 ≤ a/D ≤ 0.6 and relative bar curvatures 0.0 ≤ D/Ri ≤ 1.5. The developed weight function was verified against the solutions available in the literature and FE results, indicating good accuracy. The proposed weight function can be used in SIF calculation and remaining fatigue life prediction of surface cracked round bar components under complex stress distributions, such as chain links.

Ulrich bundles on some threefold scrolls over [formula omitted

We investigate the existence of Ulrich vector bundles on suitable 3-fold scrolls Xe over Hirzebruch surfaces Fe, for any e⩾0, which arise as tautological embeddings of projectivization of very-ample vector bundles on Fe that are uniform in the sense of Brosius and Aprodu–Brinzanescu, cf. [10] and [3] respectively.We explicitly describe components of moduli spaces of rank r⩾1 vector bundles which are Ulrich with respect to the tautological polarization on Xe and whose general point is a slope-stable, indecomposable vector bundle. We moreover determine the dimension of such components, proving also that they are generically smooth. As a direct consequence of these facts, we also compute the Ulrich complexity of any such Xe and give an effective proof of the fact that these Xe's turn out to be geometrically Ulrich wild.At last, the machinery developed for 3–fold scrolls Xe allows us to deduce Ulrichness results on rank r⩾1 vector bundles on Fe, for any e⩾0, with respect to a naturally associated (very ample) polarization.

Hausarztpraxen und Pflegestützpunkte Hand in Hand in der Versorgung multimorbider Patient*innen: Welche Vorteile kann das bringen? – Eine qualitative Studie mit Hausärzt*innen und Medizinischen Fachangestellten

BackgroundCaring for an increasing number of multimorbid people is a challenge for general practices in Germany. A possible approach to ensure future care could be the cooperation between general practices and community care points, which have so far been a little-known option among general practitioners. The aim of this study was to investigate the benefits or additional burdens that, from the perspective of general practices, a cooperation between general practices and community care points would bring for both the general practitioners themselves and their patients. MethodsIn the mixed-methods study COMPASS II, general practices were able to refer multimorbid patients with social counselling needs to a community care point. Semi-structured guideline-based telephone interviews were conducted with nine general practitioners and nine medical practice assistants regarding the feasibility of cooperation with the community care points. The interviews were analysed using framework analysis. ResultsIn the qualitative interviews, the general practitioners and medical practice assistants reported that the community care points helped them save time by relieving them of social counselling tasks. The interviewees felt relieved by knowing that the community care points expertly take care of their patients' social concerns.From the perspective of the interviewees, multimorbid patients experienced changes in their care through the counselling in community care points, such as adjusting the level of care they require. Social counsellors provided patients and their relatives with an overview of the support options available.The majority of the interviewees did not feel that cooperating with the community care point put an additional burden on their patients or on themselves. Discussion and conclusionCooperation between general practices and community care points has the potential to improve care for multimorbid patients and reduce the workload burden on general practices. Community care points are legally anchored counselling services which general practitioners could increasingly involve in the care of patients with multimorbidity.

Dynamics of the modified emden and pseudo-modified emden equations: position-dependent mass, invariance and exact solvability

We consider the modified Emden equation (MEE) and introduce its most general solution, using the most general solution for the simple harmonic oscillator’s linear dynamical equation (i.e. the initial conditions shall be identified by the PDM-MEE problem at hand). We use a general nonlocal point transformation and show that modified Emden dynamical equation is transformed to describe position-dependent mass (PDM) classical particles. Two PDM-MEE-type classical particles are used as illustrative examples, and their exact solutions are reported. Under specific parametric considerations, the phase-space trajectories are reported for the MEE-type and for PDM-MEE-type classical particles.