Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 12481 - 12510 of 1791685

Full-Text Articles in Entire DC Network

Navigating Future Careers And Life Purpose: The Effect Of Artificial Intelligence Experiences On Undergraduate Students At A Liberal Arts College, Shannon Kelly Schans Jun 2026

Navigating Future Careers And Life Purpose: The Effect Of Artificial Intelligence Experiences On Undergraduate Students At A Liberal Arts College, Shannon Kelly Schans

Dissertations

This interpretive phenomenological analysis examines how 13 undergraduate students at a liberal arts college construct meaning from their experiences with artificial intelligence technologies in relation to their career development and life purpose. Guided by an integrated theoretical framework combining Career Construction Theory (Savickas, 2012, 2013) and Transformative Learning Theory (Mezirow, 1991, 2000), the study addresses three research questions: how students describe their AI experiences across educational contexts, what connections they make between those experiences and their developing professional identities, and how they integrate AI experiences into broader narratives about work and purpose.

Data are collected through phenomenological interviews with 13 …


Percepciones, Uso Y Confianza En Ia Generativa Según Género En Estudiantes Universitarios, Elena Rodríguez-Rodríguez, María Moreno Guzmán, Irene Ojeda Fernández, Juan Pablo Hervás-Pérez, Inmaculada Mateos-Aparicio, Alejandra García-Alonso, María Luisa Pérez-Rodríguez, Rocío De La Peña Armada, José Raggio, Beatriz Gómez-Gómez, Araceli Gónzalez-Cortés, Emma Gracia-Lor, Gustavo Moreno-Martín, Ángel Juilio Reviejo-García, Esther Sánchez-Tirado, Jon Sanz Landaluce, Arturo Casado, Marta Sánchez-Paniagua Jun 2026

Percepciones, Uso Y Confianza En Ia Generativa Según Género En Estudiantes Universitarios, Elena Rodríguez-Rodríguez, María Moreno Guzmán, Irene Ojeda Fernández, Juan Pablo Hervás-Pérez, Inmaculada Mateos-Aparicio, Alejandra García-Alonso, María Luisa Pérez-Rodríguez, Rocío De La Peña Armada, José Raggio, Beatriz Gómez-Gómez, Araceli Gónzalez-Cortés, Emma Gracia-Lor, Gustavo Moreno-Martín, Ángel Juilio Reviejo-García, Esther Sánchez-Tirado, Jon Sanz Landaluce, Arturo Casado, Marta Sánchez-Paniagua

GDI. Revista de investigación de Género, Diseño e Innovación

Introducción: La presencia creciente de la inteligencia artificial (IA) en la universidad está transformando el proceso de enseñanza-aprendizaje y la relación del alumnado con la tecnología. Un equipo docente de la Universidad Complutense de Madrid (UCM), la Universidad Rey Juan Carlos (URJC) y la Universidad Camilo José Cela (UCJC) diseñó diversas estrategias para integrar la IA generativa (IAg) como recurso complementario en asignaturas de estudios universitarios oficiales de Grado y Posgrado. Esta iniciativa surge de la necesidad de evaluar la implementación de la IA para mejorar el proceso de enseñanza-aprendizaje y fomentar un uso crítico entre el alumnado de estas …


Practice With Purpose: The Pediatric Ng/Og Tube Safety Hierarchy, Caitlin Roush, Christine Hajovsky, Delaney Dewolf, Elizabeth Hernandez, Giselle Daclan, Jay Barber, Kris Noel, Kristen Dickey, Lynde Craig, Madeline Herrera, Margaret Willenburg, Mckenzie Pedigo, Melynda Olguin, Myesha Vines, Rhianna Brard, Teresa Wynee Jun 2026

Practice With Purpose: The Pediatric Ng/Og Tube Safety Hierarchy, Caitlin Roush, Christine Hajovsky, Delaney Dewolf, Elizabeth Hernandez, Giselle Daclan, Jay Barber, Kris Noel, Kristen Dickey, Lynde Craig, Madeline Herrera, Margaret Willenburg, Mckenzie Pedigo, Melynda Olguin, Myesha Vines, Rhianna Brard, Teresa Wynee

Practice With Purpose

No abstract provided.


Teach In English Or Perish: A Phenomenological Inquiry Into The Lives Of Three Emi Educators, Michela Gronchi Jun 2026

Teach In English Or Perish: A Phenomenological Inquiry Into The Lives Of Three Emi Educators, Michela Gronchi

Journal of Comparative & International Higher Education

Teaching in English Medium Instruction (EMI) programs can significantly reshape educators’ professional identities particularly when English is not their first language. This article summarizes a previously published phenomenological study with three Italian EMI educators in educational linguistics. Drawing on creative fortune lines to trace their experiences, the study showed that participants’ disciplinary field played a central role in their lived identity, intersecting with issues of language teaching and native-speakerist ideologies. The findings also revealed a heightened awareness of multilingual competence across English and other languages, which contributed to identity formation, alongside a pronounced tension between their professional selves expressed in …


Empowering International Students For Positive Social Risk-Taking In U.S. Higher Education, Maha Azzazi Jun 2026

Empowering International Students For Positive Social Risk-Taking In U.S. Higher Education, Maha Azzazi

Journal of Comparative & International Higher Education

During the acculturation process to their new life in the United States, international students can face challenges in building meaningful connections with their campus community due to difficulties in social integration. There has been limited research on finding effective ways to help international students overcome these challenges, despite numerous studies exploring the factors contributing to international students' disengagement, such as cultural and linguistic barriers and financial difficulties. To address this gap, this phenomenological qualitative study examines the experiences of eight international students at a US university. Among the themes that emerge from preliminary results are familiar challenges faced by students, …


Deep South Hiv Prevention Care Has Gaps Where Patients Need It Most, Clara Turnage Jun 2026

Deep South Hiv Prevention Care Has Gaps Where Patients Need It Most, Clara Turnage

University of Mississippi News

OXFORD, Miss. – A recent University of Mississippi study identified hundreds of counties in the South where HIV prevention and health care may not be keeping pace with the local needs, leaving communities without resources to address the persistent problem.


06-16-26 Bor Hsc Committee Notice Of Meeting, Patricia Serna Jun 2026

06-16-26 Bor Hsc Committee Notice Of Meeting, Patricia Serna

HSC Committee (A subcommittee of the UNM Board of Regents)

06-16-26 BOR HSC Committee Notice of Meeting


Aged 539 Internship Report: Cal Poly Rodeo Media And Marketing, Anna Grace Durham Jun 2026

Aged 539 Internship Report: Cal Poly Rodeo Media And Marketing, Anna Grace Durham

Agricultural Education: Graduate Internship Reports

This internship report examines the role of media and marketing within the Cal Poly Rodeo Program and highlights the integration of leadership, athlete development, and strategic communications in a collegiate athletics setting. Serving as the Media Manager for Cal Poly Rodeo, the internship focused on strengthening the program's digital presence, enhancing brand identity, and increasing community engagement, particularly surrounding the 2026 Poly Royal Rodeo. Through collaboration with University Administrators, the Officer Team, sponsors, and external media partners, comprehensive marketing campaigns were developed and implemented, resulting in significant increases in social media reach, audience engagement, and ticket sales. The project included …


Investigation Of Warfarin–Human Serum Albumin Binding By Ultrafast Affinity Extraction Using Single- And Dual-Column Affinity Microcolumn Systems, Samiul Alim Jun 2026

Investigation Of Warfarin–Human Serum Albumin Binding By Ultrafast Affinity Extraction Using Single- And Dual-Column Affinity Microcolumn Systems, Samiul Alim

Department of Chemistry: Dissertations, Theses, and Student Research

This dissertation examined the interaction of warfarin with human serum albumin (HSA) by using affinity chromatography, with particular emphasis on ultrafast affinity extraction (UAE) and affinity microcolumns. HSA affinity supports were prepared by immobilizing HSA onto diol-bonded silica via Schiff base chemistry and used to prepare affinity microcolumns for chromatographic studies under physiological-like conditions at pH 7.4 and 37.0 °C. UAE studies were performed to investigate the effects of residence time, flow rate, and column configuration on the measured apparent free fraction of warfarin and on the calculated apparent binding parameters. The results showed that the measured apparent free fraction …


The Broken Body, Benjamin Wagner Jun 2026

The Broken Body, Benjamin Wagner

Grapho : Concordia Seminary Student Journal

I remember sitting on the dugout bench wishing that I could play the same way the other kids did. They did not need to labor with such great exertion that their lungs might collapse—but I did. I was born with several chronic conditions that made all physical activities exceedingly challenging. For me, sports, exercise, or even playing with other kids always came with complications. I knew, deep down, that something was wrong with me. My body was not as it was meant to be.


Eliminating Barriers For The Implementation Of Automation In The Mining Industry, Sefiu O. Adewuyi, Kray Luxbacher, Kanagy David, Miller Ben, Miller Hugh, Michael Moats, Savit Mark Jun 2026

Eliminating Barriers For The Implementation Of Automation In The Mining Industry, Sefiu O. Adewuyi, Kray Luxbacher, Kanagy David, Miller Ben, Miller Hugh, Michael Moats, Savit Mark

Materials Science and Engineering Faculty Research & Creative Works

The integration of new technologies into U.S. mining operations is necessary for achieving continuous improvement in worker health and safety, as well as improving operational efficiency, but many have questioned why uptake of autonomy in the U.S. mining industry has been slow compared to other nations. Despite extensive research on mining automation, there remains a critical gap in understanding and systematically identifying the barriers to its adoption within the U.S. mining industry and globally. To quantify these barriers, a workshop model of data collection was employed. A total of 708 invitations were extended to professionals to participate in nine different …


Robotic-Assisted Pedicle Screw Placement Achieves High Accuracy And Narrows The Experience Gap: A Preclinical Evaluation, Anna T. Reza, Matthias Walper, Mitchell K. Ng, Paul G. Mastrokostas, Andrew S. Lee, Rafael G. Rafael, Kornelis A. Poelstra, Ratliff K. John, Rajiv K. Sethi, Michael A. Mont Jun 2026

Robotic-Assisted Pedicle Screw Placement Achieves High Accuracy And Narrows The Experience Gap: A Preclinical Evaluation, Anna T. Reza, Matthias Walper, Mitchell K. Ng, Paul G. Mastrokostas, Andrew S. Lee, Rafael G. Rafael, Kornelis A. Poelstra, Ratliff K. John, Rajiv K. Sethi, Michael A. Mont

Rothman Institute Papers

To assess a robotic-assisted system versus open manual techniques to: (1) compare pedicle screw accuracy between fellows and attendings with and without robotic assistance, and (2) evaluate executed versus planned trajectory fidelity relative to prior reports. Robotic-assisted spine systems aim to improve the accuracy, reproducibility, and safety of pedicle screw placement. Limited evidence compares outcomes across differing surgeon experience levels. A total of 255 thoracolumbar pedicle screws were placed in synthetic torsos simulating adult degenerative anatomy. Four surgeons (two fellows, two attendings) each placed half their screws using open fluoroscopy-guided techniques and half using a minimally invasive percutaneous approach with …


Project Strata, Hobbs Hegedus, Antony Chen, Adrian Scancich, Peter Constantine Psefteas, Ryan Kreis Roth, Jack Douglas Mitchell Jun 2026

Project Strata, Hobbs Hegedus, Antony Chen, Adrian Scancich, Peter Constantine Psefteas, Ryan Kreis Roth, Jack Douglas Mitchell

Mechanical Engineering

Project STRATA is a lunar sample acquisition and storage system developed in support of NASA’s Artemis mission objectives and the 2026 NASA RASC-AL competition. The overall mission concept utilizes a dual-rover architecture consisting of HARVEST, a sample collection rover, and SILO, a storage rover designed to preserve and organize lunar ice-regolith core samples collected from permanently shadowed regions (PSRs) near the lunar south pole. These regions contain scientifically valuable volatile-rich materials but present significant challenges due to extreme cryogenic temperatures, abrasive lunar regolith, and the absence of solar energy.

This report is a collection of all major work from the …


Peltier-Based Hydration Accumulation Terminal (P.H.A.T.), Jenner Mucher, Ethan Pace, Renee Robolledo, Sabrina Luo, Taehoon Lee, Tarsem Pal Jun 2026

Peltier-Based Hydration Accumulation Terminal (P.H.A.T.), Jenner Mucher, Ethan Pace, Renee Robolledo, Sabrina Luo, Taehoon Lee, Tarsem Pal

Mechanical Engineering

The objective of this project is to design an innovative potable water dispenser capable of safely delivering hot, ambient, and chilled water on demand for human lander missions. The system will support astronauts’ hydration and food rehydration needs while minimizing mass, power, maintenance, and contamination risks in microgravity and partial-gravity environments. Current spacecraft dispensers, such as the International Space Station (ISS) system, provide only heated water and have limited temperature control, cleaning accessibility, and microbial resilience. Building on NASA heritage designs and lessons learned from the ISS Potable Water Dispenser, this project advances a lighter, simpler, and more energy-efficient concept …


Mass - Modular Acoustic Suppression System, Julia Megargle, Michael A. Milner, Lucas Kaemmererer, Jonathan Corvera, Gabriel Choi, Emmi Cayer Jun 2026

Mass - Modular Acoustic Suppression System, Julia Megargle, Michael A. Milner, Lucas Kaemmererer, Jonathan Corvera, Gabriel Choi, Emmi Cayer

Mechanical Engineering

The Modular Acoustic Suppression System (MASS) is a mass tuned damper that reverberates a membrane atop a cavity to absorb select acoustic frequencies produced by the Environmental Control and Life Support Systems (ECLSS) within NASA's Artemis Human Lander. The height of the reverberation chamber is adjusted to mitigate a range of varying tonal frequencies within the human lander.


Mechanical Jump Rope, Mary Harrington, Naail Lalani, Lucas Nathan, Guy Kalach Jun 2026

Mechanical Jump Rope, Mary Harrington, Naail Lalani, Lucas Nathan, Guy Kalach

Mechanical Engineering

This Mechanical Jump Rope Senior Project was performed by four Mechanical Engineering students. This project was for the Cal Poly Kinesiology and Public Health Department, to be used by Cal Poly Friday Club, a collaboration between the San Luis Obispo Special Olympics and Kinesiology students. The purpose of the project was to allow those with different mental and physical abilities to learn and practice the timing of a jump rope at slow and adjustable speeds.


To Lecture Capture Or Not To Lecture Capture? The Answer For Legal Education Appears To Be A “Regulated Yes”, Nikos Harris Kc Jun 2026

To Lecture Capture Or Not To Lecture Capture? The Answer For Legal Education Appears To Be A “Regulated Yes”, Nikos Harris Kc

Dalhousie Law Journal

The debate over the use of technology in the law classroom is often framed as the necessary use of modern forms of information sharing versus the creation of distractions which undermine deeper learning. One subject of significant debate in law faculties is whether students should have regular access to taped lectures from their courses, often referred to as “lecture capture.” Most universities have systems that can routinely record classes, and there are a number of pedagogical benefits which flow from student use of taped lectures. However, the issue of providing broad access to lecture capture is a complex one which …


Traditional Ecological Knowledge And Ecosystem Resilience: Implementing A Native Plants Landscaping Policy In Santa Clara, Isabella 'Amne Gomez Jun 2026

Traditional Ecological Knowledge And Ecosystem Resilience: Implementing A Native Plants Landscaping Policy In Santa Clara, Isabella 'Amne Gomez

Silicon Valley Power Sustainable Futures Program

The goal of this research project is to provide implementable suggestions and guidelines for the City of Santa Clara that will incentivize local cities, residents, businesses, and parks to embrace planting more native plants. Currently, native plant landscaping in Northern California is not yet in a mature policy environment, despite the vast ecological and drought-tolerant qualities of native plants. While lawn-rebate programs that promote native plants exist, progress in policy is still needed to ensure long-term planting of native plant species. The city of Santa Clara could take the opportunity to be a leader in the current premature policy state …


Investigating Heat Adaptation Solutions In The City Of Santa Clara, Ximena Garcia-Isabelli Jun 2026

Investigating Heat Adaptation Solutions In The City Of Santa Clara, Ximena Garcia-Isabelli

Silicon Valley Power Sustainable Futures Program

In the face of climate change, weather events will become more frequent and severe. While heat adaptations have been explored, no such relationship between urban heat islands (UHI) within Santa Clara and specific applications of green infrastructure has been investigated. This policy brief aims to investigate the benefits and feasibility of heat adaptation solutions that will improve the urban environment and public health of the most vulnerable neighborhoods in Santa Clara. For Santa Clara, implementation of solar panel parking lots and green roofs should be prioritized.


Cardiac Twitch Force Measurement System, Tara Hoffman, Sebastian Carrascal Gómez, Julian Macdonald Jun 2026

Cardiac Twitch Force Measurement System, Tara Hoffman, Sebastian Carrascal Gómez, Julian Macdonald

Biomedical Engineering

The goal of this project is to develop a low-cost and accurate force measurement system and method of measurement to be used in the testing of grown cardiac tissue samples. The primary stakeholder in this project is Dr. Luke Perreault, a biomedical engineering professor at California Polytechnic State University San Luis Obispo who is studying grown cardiac tissue rings, and any of his student lab personnel. Other stakeholders include other researchers in the tissue engineering field who require a similar form of testing to the methods developed in this project.

This document will introduce the identified problem and background as …


Design And Implementation Of An Intelligent Wearable Health Monitoring System Using The Shimmer Platform, Christopher Tu, Rafael Martinez Jun 2026

Design And Implementation Of An Intelligent Wearable Health Monitoring System Using The Shimmer Platform, Christopher Tu, Rafael Martinez

Computer Engineering

This report goes over the wearable health monitoring system that we built that uses an activity classification system to tell what you are doing real time. We used a Shimmer3 sensor to collect accelerometer data and streamed it via Bluetooth to our laptops where we processed the data and ran a machine learning classifier to detect if someone is resting, walking or running. We collected our own data to train the Random Forest classifier that we used from scratch and ended with 98% accuracy. The system has a live dashboard implemented into it that shows sensor data and the current …


Autonomous Vision-Based Litter Collection Rover, Dante Michael Benedetti, Benjamin Scott Tavares, Nathan Heil Jun 2026

Autonomous Vision-Based Litter Collection Rover, Dante Michael Benedetti, Benjamin Scott Tavares, Nathan Heil

Electrical Engineering

This report documents the design, implementation, and testing of an autonomous litter-collection rover developed as a Senior Project Design Lab (EE 460/463/464) at California Polytechnic State University. The rover integrates autonomy, computer vision, embedded real-time control, mecanum-wheel omnidirectional mobility, and a two-degree-of-freedom robotic arm to detect, approach, and collect small ground-level litter such as bottles, wrappers, and paper fragments.

The system uses a two-layer compute architecture: an NVIDIA Jetson Orin Nano running ROS 2 for perception, SLAM, and path planning, paired with an STM32L4A6ZG microcontroller for real-time motor control and odometry. The robot is built on a multi-level aluminum frame …


Elevate Grill, Brady Alexander Jun 2026

Elevate Grill, Brady Alexander

Electrical Engineering

The Elevate Grill Senior Project is a Santa Maria style grill with an electrical lifting/lowering mechanism and temperature sensor feedback. The grill allows for a dynamically controlled cooking surface, able to be automatically set or manually set by the user. The grill’s user interface informs the user about the temperature in different zones on the grill and alerts the user when the target temperature is hit. Additionally, the user can program preset temperature ranges and apply them to the grill’s control system. The system incorporates safe failure modes in the event of a power outage and also allows the user …


Pcb Design For Place Cells Vlsi Chip, Gavin Reaksecker, Alex Krier, Joshua Lin Jun 2026

Pcb Design For Place Cells Vlsi Chip, Gavin Reaksecker, Alex Krier, Joshua Lin

Electrical Engineering

This project presents the design and implementation of a 2 layer test-bench printed circuit board (PCB) for evaluating the functionality of a custom 40-pin VLSI integrated circuit. The objective is to create a reliable and portable platform capable of supplying configurable bias voltages, generating variable input signals, and monitoring both analog and digital outputs. The board integrates adjustable bias networks using potentiometers, digital and analog buffering stages, and optional battery supply operation. The VLSI device under test is mounted in dual-in-line (DIP) sockets to enable rapid replacement and repeated characterization. Dedicated test points are incorporated throughout the PCB to facilitate …


Solving Linearly Constrained Quadratic Programs Using Field Programmable Analog Arrays, Tyler Wynn, Alonzo Arroyo Jun 2026

Solving Linearly Constrained Quadratic Programs Using Field Programmable Analog Arrays, Tyler Wynn, Alonzo Arroyo

Electrical Engineering

This paper presents a field-programmable analog array (FPAA) implementation for solving linearly constrained quadratic programs (LCQPs) directly in the analog domain. The solver is based on a continuous-time primal-dual control architecture with integral action, anti-windup compensation, and a piecewise-linear nonlinearity for enforcing affine inequality constraints. A switched-capacitor implementation using three AN231E04 FPAAs is developed, and coefficient scaling methods are introduced to keep internal and output signals within the voltage limits of the hardware. A global scaling factor is used to reduce internal signal excursions, while solution-space scaling is shown to modify the implemented optimization coefficients and alter the local closed-loop …


Autonomous Rover Solar And Battery Management System: Team B, Karla Jazmin Lira Gonzalez, Paige Ambriz, Kunj Shah, Elhom Delasa Sheykhi Jun 2026

Autonomous Rover Solar And Battery Management System: Team B, Karla Jazmin Lira Gonzalez, Paige Ambriz, Kunj Shah, Elhom Delasa Sheykhi

Electrical Engineering

This project focused on the software and printed circuit board (PCB) integration for Poly1Rover’s battery management system (BMS). Poly1Rover is a student organization dedicated to building a low-cost autonomous rover designed to operate on Mars. Since solar availability, temperature, and other conditions on Mars vary, the rover requires a reliable battery management system that accurately monitors battery health and status. This team’s work included the communication and control side of the BMS. The subsystem was designed around the Renesas ISL94202 battery monitor and the MSP430 controller. Battery information was read from the ISL94202 registers through I2C communication, converted from raw …


Estimation And Control For Physical-Ai Aerial Robots, Joshua S. Crain Jun 2026

Estimation And Control For Physical-Ai Aerial Robots, Joshua S. Crain

Electrical Engineering

This project investigates the modeling, control, and state estimation of a Crazyflie 2.0 quadrotor using both a custom nonlinear simulation and the NVIDIA Isaac Lab robotics simulation framework. A twelve-state rigid-body dynamic model was developed to represent the translational and rotational motion of the vehicle, and classical cascaded PID control was implemented for position and attitude stabilization. To improve state awareness in the presence of sensor noise, Kalman Filter (KF) and Extended Kalman Filter (EKF) algorithms were integrated for state estimation. Initial controller development and verification were performed using a custom MATLAB/Python simulation environment based on numerical integration of the …


Stella: A Narrative Exploration Of Artificial Intelligence, Grief, And Human Consciousness, Alyssa Grace Gerardo Jun 2026

Stella: A Narrative Exploration Of Artificial Intelligence, Grief, And Human Consciousness, Alyssa Grace Gerardo

Computer Science and Software Engineering

STELLA is a narrative-driven 2D puzzle adventure game developed in Unity that explores themes of grief, memory, human connection, and artificial intelligence. Players assume the role of Luna, a young woman searching for a missing friend who becomes trapped within a mysterious garden overseen by a mysterious entity known as STELLA. Through exploration, environmental storytelling, dialogue, and a series of puzzles, players uncover a deeper narrative centered on loss, obsession, and the pursuit of artificial immortality.


Mandatory Minimum Sentences After R V Hill: A Different Way Of “Treating” Reasonably Foreseeable Offenders, Colton Fehr Jun 2026

Mandatory Minimum Sentences After R V Hill: A Different Way Of “Treating” Reasonably Foreseeable Offenders, Colton Fehr

Dalhousie Law Journal

The Supreme Court of Canada was initially reluctant to strike down minimum sentences for inconsistency with the prohibition against “cruel and unusual treatment or punishment” found in section 12 of the Charter. The Court’s more recent jurisprudence incorporating the experiences of equality-seeking groups and vulnerable offenders played a key role in reversing course. It is principled to take into account the experiences of minority groups to the extent they are capable of illustrating an offender’s reduced moral blameworthiness. The inevitable criticism that this approach unduly expands judicial review is nevertheless more convincingly rebutted by observing that equality plays a …


A Word From The Writing Team (June 2026), Pam Walter, Mfa, Laura Deloretta, Phd Jun 2026

A Word From The Writing Team (June 2026), Pam Walter, Mfa, Laura Deloretta, Phd

A Word From the Writing Team (Newsletter)

No abstract provided.