General Shape Research Articles

Comment on ‘A standardized terminology of spines in the order Siluriformes (Actinopterygii: Ostariophysi)’ by Ballen and de Pinna (2021)

Abstract Homology is the foundation of any comparative evolutionary study, and as structures previously considered homologous are found to be convergent, and vice versa, terminology needs to be changed to reflect homology. The dorsal- and pectoral fin-spines of catfishes (order Siluriformes) are morphologically diverse and ornamentations adorning the anterior and posterior edges of the spines have regularly been used in systematic studies of the group. Building on Vanscoy et al. (2015), Kubicek et al. (2019) showed that some of the ornamentations of siluriform fin-spines previously considered homologous result from two different developmental pathways, and presented a terminology based on the homology of these structures. In their recent paper, Ballen and de Pinna (2021) proposed a new terminology for various catfish fin-spine structures, including fin-spine ornamentation. However, homology was not considered and, instead, their terminology is based on the general shape of the ornamentation to allow for ‘unambiguous use’ in various applications, including the placement of fossil fin-spines into well-defined clades of catfishes. We show that the terminology proposed by Ballen and de Pinna (2021) is problematic as it confuses non-homologous conditions into the same state and thus undermines the usefulness of fin-spine ornamentation as a character in comparative evolutionary studies of siluriforms.

Nonlinear effects at the deformation of amorphous polymers in warm and frozen states

One of the important problems of the modern rheology of polymer materials, namely, the possibility of describing the deformation of amorphous polymers within the framework of linear rheological relationships between relative deformation and deforming stress or the need to use nonlinear rheological equations is considered. The criteria for distinguishing these approaches, namely, the determination of the corresponding critical values of the macro- and microphysical characteristics of the material and the conditions for carrying out the mechanical tests are also discussed. In particular, the difference between the influence of kinetic and thermodynamic nonlinear effects on the regularities of deformation processes of amorphous polymers in warm and frozen states was noted. The influence of nonlinear effects on the general shape and characteristics of individual stages of the “relative strain - deforming stress” diagram at deformation of polymer samples with specified values of strain rate and temperature is analyzed in detail. The results of the theoretical analysis were used for the physical interpretation of the general form and features of individual stages of the tensile test diagrams of amorphous polyimide films (V. D. Natsik, H. V. Rusakova, S. V. Lubenets, V. A. Lototskaya, and L. F. Yakovenko, Fiz. Nyzk. Temp. 49, 569 (2023) [Low Temp. Phys. 49, 521 (2023)]), empirical estimates for the rheological characteristics of this polymer were obtained.

Comparative Structural Investigation of Histone-Like HU Proteins by Small-Angle X-ray Scattering

Nucleoid-associated proteins (NAPs) control the structure and functions of bacterial nucleoid. Histone-like HU proteins are most abundant NAPs in dividing bacterial cells. Previously, structural ensembles of conformations of HU proteins from pathogenic mycoplasmas Spiroplasma melliferum and Mycoplasma gallisepticum were obtained using NMR spectroscopy. A structural study of these mycoplasma proteins is performed by small-angle X-ray scattering (SAXS). The occurrence of individual conformations from the ensemble, obtained by NMR, is estimated from the scattering data on HU protein solutions. In particular, an approach based on characterization of equilibrium mixtures in terms of volume fractions of their components was applied. The general shape of the proteins and their oligomeric state are independently confirmed using ab initio bead modelling. The flexibility of DNA-binding protein domains is analyzed by the ensemble optimization method, which is based on comparison of the structural characteristics of conformations fitting the SAXS data to the distribution of these characteristics in a randomly generated set. The results obtained give a new insight on the variability of the structure of HU proteins, which is necessary for their functioning.

Shape sensitivity of thermoacoustic oscillations in an annular combustor with a 3D adjoint Helmholtz solver

We model acoustic oscillations driven by velocity-coupled heat release rate fluctuations. We obtain an inhomogeneous wave equation and convert it to the frequency domain with a modal decomposition. We impose acoustic boundary conditions and, using a finite element discretization with Lagrange elements, express this as a nonlinear eigenvalue problem for the complex angular frequency, ω. We solve this using the open source platform FEniCS combined with the SLEPc, PETSc and OpenMPI libraries. In Hadamard form we write the derivative of the eigenvalue, ω, with respect to generic geometry changes. This requires the solution of the adjoint equation, which we obtain with the same method as the direct equation. The output is a thermoacoustic Helmholtz solver that cheaply calculates the effect of generic shape changes on the growth rate and frequency of thermoacoustic oscillations. We then consider symmetry-preserving and symmetry-breaking geometry modifications. For demonstration we model a 30kW laboratory-scale annular combustor (MICCA from EM2C). We parametrize the surfaces of the three-dimensional geometry with NURBS using control points. For the plenum and the combustion chamber, we find the eigenvalue shape derivatives with respect to the parameters of these control points. We apply two different strategies, perpendicular boundary movements and control point perturbations, to implement shape changes proportional to these shape derivatives, thereby reducing the growth rate of the unstable mode by increasing the phase shift between the pressure and the heat release rate oscillations. This computational method shows how to significantly alter thermoacoustic oscillations by making small geometry changes. The framework in this paper can handle arbitrarily complex three-dimensional geometries, which will be useful for the design of industrial combustion systems.

Structures with varying discontinuities and curvatures: A dynamic analysis approach by the p-version finite element method

The present paper investigates the geometrically nonlinear time domain dynamic analysis of a coupled Timoshenko beam-beam or beam-arch mechanical system. The coupled structure is modelled with a variable discontinuity in an elastic layer, which represents a real case from technical practice where there is no continuous distribution of the elastic layer or the stiffness of the layer is changed by other influences at different locations. A modified p-version finite element method is developed for the vibrations of a shear deformable coupled beam system with a discontinuity in an elastic layer. The main contribution of this work is the discovery of coupled effects and phenomena in the simultaneous vibration analysis of varying discontinuity and varying curvature of the newly modelled coupled mechanical system. New general mode shapes are presented, and the forced vibrations in the time domain are analyzed using the Newmark method. The study compares the results for various locations and types (size) of discontinuity in an elastic coupling layer and various curvatures of the lower supported beam. It explains the cases in which the influence of curvature takes precedence over discontinuity and vice versa in achieving a steady-state regime of vibrations. The analysis results are valuable and have broader applications in the field of solids and structures.

Convergent evolving finite element approximations of boundary evolution under shape gradient flow

Abstract As a specific type of shape gradient descent algorithm, shape gradient flow is widely used for shape optimization problems constrained by partial differential equations. In this approach, the constraint partial differential equations could be solved by finite element methods on a domain with a solution-driven evolving boundary. Rigorous analysis for the stability and convergence of such finite element approximations is still missing from the literature due to the complex nonlinear dependence of the boundary evolution on the solution. In this article, rigorous analysis of numerical approximations to the evolution of the boundary in a prototypical shape gradient flow is addressed. First-order convergence in time and $k$th order convergence in space for finite elements of degree $k\geqslant 2$ are proved for a linearly semi-implicit evolving finite element algorithm up to a given time. The theoretical analysis is consistent with the numerical experiments, which also illustrate the effectiveness of the proposed method in simulating two- and three-dimensional boundary evolution under shape gradient flow. The extension of the formulation, algorithm and analysis to more general shape density functions and constraint partial differential equations is also discussed.

Introduction to Causal Inference for Psychologists: Testable and Non-Testable Causal and Statistical Assumptions

The main goal of basic research is to answer causal questions. Generally, only the statistical part of this process tends to proceed in a partially formal way and according to clearly defined rules. At the same time, the causal relations are often treated informally or implicitly in a way that is prone to difficult-to-detect errors. This introduction aims to show psychology researchers some of the great benefits of approaching causal issues using a formal theory of causal inference. In this part, I discuss the non-obvious status and role of causal and statistical assumptions in causal inference. After covering, in a simple setting, the general shape of inference from causal assumptions, statistical assumptions, and data to causal effects, I outline, from a contemporary perspective, the limits of applicability of the general linear model. Then, I introduce the formal part of Pearl’s theory that relies on graphs. Using these tools, I show how one can analyze and interpret the results of an experiment on short-term memory search, and I discuss the back-door and front-door adjustments. To present the mathematical part of the theory in an accessible way without overly simplifying it, I illustrate some issues by using simulations written in R.

Health promoting schools in Iceland - SHE4AHA Erasmus+ project

Abstract Background The Green paper on ageing recognizes learning and experience in early childhood influences our lives. Healthy childhood in general shapes our future prospect, health situation and well-being. SHE4AHA Erasmus+ project approaches the Green paper and this work is lead by Schools for Health in Europe Network Foundation (SHE) in cooperation with researchers and coordinators for Health promoting schools in five countries. The green paper advocates for interventions and activities, which will help to laying the right foundation for early in life, preventing, limiting, and postponing some of the challenges linked to ageing. This could help European member states to fulfil the objective of adding healthier years to the life expectancy. Description The objective of SHE4AHA is to show Health Promoting School (HPS) framework used as a validated and evidence-based contribution to implement the Green paper on ageing that calls for solutions to support healthy and active ageing from an early age. The SHE4AHA project involves 15 pilot schools in five European countries, Iceland, Portugal, Denmark, France, and Slovenia. These schools receive training, coaching and support to work with the whole school approach for HPS. The SHE4AHA project started in March 2022 and will finish in February 2025. Each pilot school is working with aim on project selected of them to try out for the schoolyear 2022-2023. Lessons and results All pilot schools work with a pixie version of the SHE Manual made for the project. The school systems in the countries are very different and there is need for a little different approach for the countries. The three pilot schools in Iceland are also working with the Icelandic frame of being a HPS. The supporting material is e.g., checklists and interactive website. Results have shown e.g., need to increase and recognise appropriate resources like time and flexibility for coordinators at schools. Key messages • Health promoting framework built on the Ottawa Charter the process, enabling individuals and communities to increase control over the determinants of health to live an active and a productive life. • In the development process of health promoting schools, school principals, school management, teachers, other school staff, pupils and community partners need to be involved.

Multivariate analysis of morphometric traits of Malaimadu cattle-autochthonous draft cattle of south India.

Malaimadu cattle is a less explored indigenous cattle germplasm reared in the Western Ghats area of Tamil Nadu, south India. This study aimed to analyze the morphological structure of the Malaimadu cattle using a multivariate approach that explains and best represents body conformation. Sixteen body measurements were obtained from 156 adult female cattle from their native breeding tract. The Nearest Neighbor Method of Hierarchical Cluster analysis was used to group the morphometric traits into clusters. Pearson's coefficients of correlation (r) were estimated to determine the phenotypic correlations between different body measurements. Traits were analyzed using varimax rotated principal component analysis (PCA) with Kaiser normalization. Cluster analysis categorizes morphometric traits into two distinct clusters with the first cluster formed by traits related to horns and face, while the second cluster denotes general body conformation. Out of 120 phenotypic correlations, 55 were significant of which 51 were positive correlations. The estimated correlation coefficient ranges between - 0.50 (body length and face width) to 0.85 (chest girth and body weight). PCA extracted six components representing 70.19% of the total variance, while the first principal component comprises chest girth (CG), body weight (BW), height at wither (HW), and Paunch girth (PG) alone accounts for 23.70% thereby describing the general size and shape of the animal. The multivariate approach has proven to be effective in differentiating Malaimadu cattle from other indigenous breeds of south India with clear morphometric differences that help in identifying the pure phenotype for future propagation and also for devising breeding strategies.

Binocular field configuration in owls: the role of foraging ecology.

The binocular field of vision differs widely in birds depending on ecological traits such as foraging. Owls (Strigiformes) have been considered to have a unique binocular field, but whether it is related to foraging has remained unknown. While taking into account allometry and phylogeny, we hypothesized that both daily activity cycle and diet determine the size and shape of the binocular field in owls. Here, we compared the binocular field configuration of 23 species of owls. While we found no effect of allometry and phylogeny, ecological traits strongly influence the binocular field shape and size. Binocular field shape of owls significantly differed from that of diurnal raptors. Among owls, binocular field shape was relatively conserved, but binocular field size differed among species depending on ecological traits, with larger binocular fields in species living in dense habitat and foraging on invertebrates. Our results suggest that (i) binocular field shape is associated with the time of foraging in the daily cycle (owls versus diurnal raptors) and (ii) that binocular field size differs between closely related owl species even though the general shape is conserved, possibly because the field of view is partially restricted by feathers, in a trade-off with auditory localization.

Precise gamma-ray spectrum stabilization using full spectral information

One of the most important steps in recording, processing and analyzing gamma-ray spectra is stabilizing the measured spectrum. Baseline shifts and gain changes of any origin including environmental condition, high voltage instability and amplifying not only cause drifts in gamma-ray spectrum, but also force the spectrum to be noticeably distorted. In this work, a stabilization method based on full gamma-ray spectrum shape consideration is introduced for online as well as offline stabilization of gamma-ray spectra. The method relies upon sequentially comparing spectra, each measured during a time window, and subsequently finding the optimum shift for each time window using an artificial intelligence method aiming at minimizing the difference between the general shapes of the spectra. By utilizing spectra measured during shorter acquisition times and stabilizing them, a stable spectrum can be obtained for the longer acquisition time without the need to determine the detection system parameters, peak positions, or perform energy calibration. Subsequently, a sequence of stabilized spectra converging to the total stabilized spectrum is created. The proposed method has been applied to stabilize and analyze 14 MeV neutron induced prompt gamma-ray (PG) spectra of various samples measured using a 3 × 3 inch NaI detector. Additionally, the method has been used to stabilize the recorded spectra of 152Eu and 60Co gamma-ray point sources. The proposed method has efficiently stabilized all the tested gamma-ray spectra, resulting in a significant improvement of the analysis results.

An optically thin view of the flaring chromosphere: non-thermal widths in a chromospheric condensation during an X-class solar flare

ABSTRACT The bulk of solar flare energy is deposited in the chromosphere. Flare ribbons and footpoints in the chromosphere therefore offer great diagnostic potential of flare energy release and transport processes. High-quality observations from the Interface Region Imaging Spectrograph (IRIS) spacecraft have transformed our view of the Sun’s atmospheric response to flares. Since most of the chromospheric lines observed by IRIS are optically thick, forward modelling is required to fully appreciate and extract the information they carry. Reproducing certain aspects of the Mg ii lines remain frustratingly out of reach in state-of-the-art flare models, which are unable to satisfactorily reproduce the very broad-line profiles. A commonly proposed resolution to this is to assert that very large values of ‘microturbulence’ is present. We assess the validity of that approach by analysing optically thin lines in the flare chromosphere from the X-class flare SOL2014-10-25T17:08:00, using the derived value of non-thermal width as a constraint to our numerical models. A non-thermal width of the order 10 km s−1 was found within the short-lived red wing components of three spectral lines, with relatively narrow stationary components. Simulations of this flare were produced, and in the post-processing spectral synthesis we include within the downflows a microturbulence of 10 km s−1. While we can reproduce the O i 1355.598 Å line rather well, and we can capture the general shape and properties of the Mg ii line, the synthetic lines are still too narrow.

Investigation of Taylor bubble dynamics in annular conduits with counter-current flow

This study numerically investigates counter-current slug flow by considering the motion of a Taylor bubble in annular conduits with downward-flowing liquids using the Volume-of-Fluid method implemented in the commercial computational fluid dynamics software ANSYS Fluent (Release 19.2). The translational velocity of a counter-current ascending or co-current descending Taylor bubble in vertical concentric annuli and the corresponding distribution parameter (C0) are analyzed. The latter is correlated in terms of Eötvös number (Eo) and inverse viscosity number (Nf) within the range of Eo between 40 and 400 and Nf between 40 and 320. The proposed correlation provides an accurate fit to the numerical data with an average error of 2.64%, and is successfully compared with published numerical findings. In general, the smooth and stable shape of the bubble is disrupted as the counter-current flow velocity (Frl) increases above a critical value, leading to the formation of surface waves and the displacement of the bubble tip away from the annular gap center and towards the outer pipe. C0 increases with Eo and Nf, plateauing at high values of Eo. The effects of annulus inclination (θ) and eccentricity (ε) on bubble rise velocity are examined within the common range of θ and ε encountered during the drilling of oil, gas, or geothermal wells, i.e. 0° ≤ θ ≤ 60° and 0 ≤ ε ≤ 0.7, and their impact on the C0. The increasing Frl and θ lead to a streamlined bubble with pointed nose and thus a reduction in the wrap angle (θwrap), ultimately leading to reduced drag compared to the vertical annulus case and a decrease in C0. As the ε increases, which is accompanied by an increase in the degree of bubble eccentricity, the corresponding C0 decreases. For a constant Eo = 100 and Nf = 160 with inclination angle of θ = 40°and eccentricity of ε = 0.5, the C0 < 1 is observed.

Advancing Our Understanding of Martian Proton Aurora Through a Coordinated Multi‐Model Comparison Campaign

AbstractProton aurora are the most commonly observed yet least studied type of aurora at Mars. In order to better understand the physics and driving processes of Martian proton aurora, we undertake a multi‐model comparison campaign. We compare results from four different proton/hydrogen precipitation models with unique abilities to represent Martian proton aurora: Jolitz model (3‐D Monte Carlo), Kallio model (3‐D Monte Carlo), Bisikalo/Shematovich et al. model (1‐D kinetic Monte Carlo), and Gronoff et al. model (1‐D kinetic). This campaign is divided into two steps: an inter‐model comparison and a data‐model comparison. The inter‐model comparison entails modeling five different representative cases using similar constraints in order to better understand the capabilities and limitations of each of the models. Through this step we find that the two primary variables affecting proton aurora are the incident solar wind particle flux and velocity. In the data‐model comparison, we assess the robustness of each model based on its ability to reproduce a proton aurora observation. All models are able to effectively simulate the general shape of the data. Variations in modeled intensity and peak altitude can be attributed to differences in model capabilities/solving techniques and input assumptions (e.g., cross sections, 3‐D vs. 1‐D solvers, and implementation of the relevant physics and processes). The good match between the observations and multiple models gives a measure of confidence that the appropriate physical processes and their associated parameters have been correctly identified and provides insight into the key physics that should be incorporated in future models.

A robust approach to 3D neuron shape representation for quantification and classification

We consider the problem of finding an accurate representation of neuron shapes, extracting sub-cellular features, and classifying neurons based on neuron shapes. In neuroscience research, the skeleton representation is often used as a compact and abstract representation of neuron shapes. However, existing methods are limited to getting and analyzing “curve” skeletons which can only be applied for tubular shapes. This paper presents a 3D neuron morphology analysis method for more general and complex neuron shapes. First, we introduce the concept of skeleton mesh to represent general neuron shapes and propose a novel method for computing mesh representations from 3D surface point clouds. A skeleton graph is then obtained from skeleton mesh and is used to extract sub-cellular features. Finally, an unsupervised learning method is used to embed the skeleton graph for neuron classification. Extensive experiment results are provided and demonstrate the robustness of our method to analyze neuron morphology.

An Accurate Phenotypic Study of The Foliar Epidermis for Some Species of Silene L. From Caryophyllaceae Family in Iraq

In the present research work, detailed micromorphological features study (investigated for foliar epidermal anatomy) for five species of the genus Silene L., belonging to the family Caryophyllaceae. One of the essential anatomical characteristics of the leaf in this genus observed two basic stomata types on both adaxial and abaxial epidermis, diacytic and anisocytic, from five species, three species have distinguished a diacytic type, exception two species S. chlorifolia and S. longipetala appeared to have both a diacytic and anisocytic, also has astrocytic crystals within epidermal cells. Also in the present work, 3 species out of 5 have trichomes on their both surfaces, observed having them multicellular uniseriate. All the taxa were the distinguished shape of the guard cells as reniform-like from a full short reniform in all species. So the general shape of ordinary epidermal cells, anticlinal wall of the epidermal cells, type of stomata cells, collar shape marginal of guard cells, and trichomes. Images enhanced the micromorphological characteristics under study. Information on the locations and dates of the collection was also confirmed. This study revealed that the micromorphological features of the family are taxonomically signi?cant in the accurate identi?cation of species.

Two Species of the Family Cyatholaimidae (Nematoda: Chromadorida) from Korea

During a survey of the Wando-gun rockpool area in Korea, two species belonging to the family Cyatholaimidae were discovered within a sponge, Hymeniacidon sinapium, and are hereby reported. Despite the monophyletic nature of the family Cyatholaimidae, it has been a topic of discussion among nematologists due to its lack of synapomorphic characteristics and overlapping generic diagnoses. Many genus-defining features consist of a combination of non-unique characters, which may not hold significant taxonomic importance. Consequently, most genera within the family are non-monophyletic according to phylogenetic findings. The absence of molecular data complicates the identification of taxonomically important characteristics that may have been previously overlooked. While the pore complex and the lateral pore-like structure have been suggested as potentially important traits, these insights are lacking in most recorded species, along with molecular data to confirm their significance in topology. Given the considerable amount of work required from the ground up, this study provides both morphological information (including taxonomic description, morphometric measurements, tabular key comparing key features to all valid congeners, illustration, and microscope photographs) and molecular data (partial sequences of three molecular regions, K2P distance comparison, and phylogenetic trees) for the two species discovered in Korea. The study also offers insights on potentially significant traits, such as the pore complex and other pore structures. The Korean specimen of Acanthonchus (Seuratiella) tridentatus resembles the original description regarding aspects such as the number and type of precloacal supplements, as well as the shape of the spicules and gubernaculum. However, variations are observed in the following characteristics: body ratio, nerve ring location, pharynx length, and the presence or absence of the oscelli. Our partial molecular sequences of the specimens also match identically with a single existing entry on NCBI identified as A. (S.) tridentatus. The new species, Paracanthonchus spongius sp. nov., is most similar to P. kamui in terms of the general shape of the body and gubernaculum but can be distinguished by differences in the number of precloacal supplements, amphid position, and gubernaculum ratio. The phylogenetic tree constructed based on the 28S rRNA region shows both species grouped within the monophyletic clade of Cyatholaimidae with high bootstrap support. However, achieving generic resolution of these species will require more molecular sequences of congeners to accumulate in the future.

Shaping bridge decks for VIV mitigation: A wind tunnel data-driven adaptive surrogate-based optimization method

Vortex-induced vibration (VIV) of deck girders frequently drives the wind-resistant design of wind-sensitive bridges from the preliminary to final design stages. Shaping bridge decks is a proven strategy to mitigate VIV. While significant shape modifications are commonly restricted to preliminary design stages, only minor medications are possible at advanced design stages, typically involving adding flow modifiers or changing the shape and location of existing appendages. These mitigation strategies have been implemented in the last decades by carrying out expensive wind tunnel campaigns and following heuristic design rules. This paper proposes an experimental data-driven adaptive surrogate-based optimization approach to systematically identify optimum deck shapes that minimizes the economic cost of the bridge while fulfilling the VIV project specifications. The methodology is conceived to carry out simultaneously the general and detailed shape design of the final deck configuration by harnessing a sequential sampling plan aiming at reducing the sectional model construction costs. The proposed holistic design framework is successfully applied to a real application case involving 26 wind tunnel tests of 1.8-meter wide sectional models to figure out the optimal gap distance and location of maintenance tracks of a twin-box deck equipped with all the appendages included in the final deck design.

Theory of gravitational lensing on a curved cosmic string

It is discussed in detail the complete mathematical model of gravitational lensing on a single cosmic string (CS) of general shape and position with respect to the line of sight. CS are one-dimensional extended objects assuredly predicted by modern cosmology. The presence of CS changes the global geometry of the Universe, could clarify the properties of the early Universe, including inflation models, and could serve as a unique proof of higher-dimensional theories. Despite the fact that CS have not yet been reliable detected, there are several strong independent indications of the existence of the CS, based of CMB analysis and search of gravitational lens chains with special properties (The recent new indication of the existence of the CSs is the nHz gravitational waves in the NANOGrav and other PTA Collaborations data.) However, early considered models of straight CS presented only a small fraction of the general CS-configurations to be observed. Now we propose model which could significantly increase the possibilities of CS observational search. It is considered more realistic models have necessarily include the inclinations and bends of the CS. Besides, the recent analysis of observational data on the search for gravitational-lens candidates, shows a large number of pairs that could be explained by the complex geometry of the CS.

Effect of Nomophobia on Body Image Satisfaction and Aggression Among College Students

Nomophobia characterized as the fear of being without a mobile phone or being unable to use it has become widespread in today's technologically advanced society. Given the growing reliance on mobile, it is essential to comprehend the potential psychological effects of nomophobia. Body image satisfaction is a person's subjective assessment and perception of their own physical appearance. It includes sentiments, attitudes, and general body pleasure, including weight, shape, size, and overall attractiveness. Excessive smartphone use may result in an obsession with virtual relationships, limiting face-to-face social interactions and empathy, which can contribute to violence. This research aimed to examine the influence of nomophobia on body image satisfaction and aggression. The study utilized a quantitative research design and collected data from a sample of college students (N = 52) using convenience sampling. Correlational analysis and regression analysis were also employed on the data. Findings suggest that the sample under study suffers from a moderate risk of nomophobia higher level of body image satisfaction and moderate levels of aggression. Also, there is a weak negative correlation between nomophobia and body image satisfaction and weak positive correlation between nomophobia levels and four aspects of aggression. In addition, nomophobia is not a significant predictor of college students' body image satisfaction and aggression. These findings highlight the detrimental effects of nomophobia on college students' psychological well-being. In conclusion, results suggest that guided intervention could help decrease the levels of nomophobia in college students, resulting in increased satisfaction with their body image and lower levels of aggression.