Digital Commons Network^™

Testing Mean Stability Of Heteroskedastic Time Series, Violetta Dalla, Liudas Giraitis, Peter C. B. Phillips

Research Collection School Of Economics

Time series models are often fitted to the data without preliminary checks for stability of the mean and variance, conditions that may not hold in much economic and financial data, particularly over long periods. Ignoring such shifts may result in fitting models with spurious dynamics that lead to unsupported and controversial conclusions about time dependence, causality, and the effects of unanticipated shocks. In spite of what may seem as obvious differences between a time series of independent variates with changing variance and a stationary conditionally heteroskedastic (GARCH) process, such processes may be hard to distinguish in applied work using basic …

Shrinkflation And Consumer Demand, Aljoscha Janssen, Johannes Kasinger

Research Collection School Of Economics

This study investigates shrinkflation—the practice of reducing product size while maintaining or slightly changing prices—in the U.S. retail grocery market. We analyze a decade of retail scanner data to assess the prevalence and patterns of product size changes across various product categories. Our findings show that approximately 1.92% of products have been downsized. When comparing total sales, product downsizing is more than five times as prevalent as upsizing. Product downsizing typically occurs without a corresponding decrease in price and is widespread across product categories. Consequently, consumers end up paying more per unit volume. We further find that consumers are more …

Childlessness And Health In Middle Age And Older Adulthood: Evidence From Singapore, Christine Ho, Dahye Kim, Rohan Ray, Bussarawan Teerawichitchainan

Research Collection School Of Economics

Health and well-being in mature adulthood are important concerns given the prevalence of individuals aging without children. We exploit two new instruments for childlessness— infertility and the number of childless siblings—and condition our analyses on a rich set of covariates including childhood health and financial status, to investigate the causal relationship between childlessness and health in middle age and older adulthood. Using a nationwide dataset of 1,500 Singaporeans aged 50 and above, we show that OLS underestimates the negativeeffects of childlessness on health. We find that childlessness leads to higher likelihood of poorer self-reported health and mental distress. The results …

Assessing Ethereum’S Diversification Role With Bitcoin And Major Equity Index – A Bayesian Mixture Copula Approach, Jackie Li, Jacie Jia Liu

Research Collection School Of Economics

With the introduction of spot Ethereum ETFs, Ethereum plays an increasingly important role in the cryptocurrency market. In this paper, we propose a Bayesian modelling framework incorporating a mixture copula for co-modelling Ethereum returns with Bitcoin or FTSE 100 returns. The mixture copula is designed as a combination of the Clayton copula and its three rotations, Frank, and Gaussian copulas. It provides substantial flexibility for handling a variety of dependency structures. The Bayesian approach offers the advantage of jointly estimating both the margins and copulas and simulating future returns in a coherent procedure. Using 10 different risk or risk-return measures, …

Uncovering Mild Drift In Asset Prices With Intraday High-Frequency Data, Shuping Shi, Peter C. B. Phillips

Research Collection School Of Economics

Asset prices are commonly represented as a drift-diffusion process, wherein the drift component denotes the anticipated return of the asset within some time frame, while the diffusion component accommodates random shocks. The drift component has substantial practical significance but accurate estimation is typically challenging and has met with limited success in the existing literature except over large time spans. This paper explores a comprehensive range of drift-diffusion models that include constant, linear, trending, and bursting drift. Conditions are identified under which realized squared drift  is a reliable tool for gauging integrated squared drift when the time span Tn is large …

Glucagon-Like Peptide-1-Based Therapies And The Intersection Of Metabolic And Skin Disease, Ana Ormaza-Vera, Clinton W. Enos

Department Dermatology Faculty Publications

[Introduction] To the Editor: The development of the glucagon-like peptide-1 (GLP-1) receptor agonists (GLP-1RAs) and the dual glucose-dependent insulinotropic polypeptide/GLP-1RAs is revolutionizing the management of metabolic disease. Perhaps most impressive is that their clinical significance extends far beyond their approved indications and touches seemingly every organ system, even the skin.

Look, Compare And Draw: Differential Query Transformer For Automatic Oil Painting, Lingyu Liu, Yaxiong Wang, Li Zhu, Lizi Liao, Zhedong Zheng

Research Collection School Of Computing and Information Systems

This work introduces a new approach to automatic oil painting that emphasizes the creation of dynamic and expressive brushstrokes. A pivotal challenge lies in mitigating the duplicate and common-place strokes, which often lead to less aesthetic outcomes. Inspired by the human painting process, i.e., observing, comparing, and drawing, we incorporate differential image analysis into a neural oil painting model, allowing the model to effectively concentrate on the incremental impact of successive brushstrokes. To operationalize this concept, we propose the Differential Query Transformer (DQ-Transformer), a new architecture that leverages differentially derived image representations enriched with positional encoding to guide the stroke …

Allied Professionals In (Academic) Law Libraries, Part I: Evolving Roles, Skills, And Professional Development Needs, Sarah E. Ryan, Mads Ball, Agnes G. Pearcy, Diana Quinones, Dawn L. Smith

Library Staff Publications

Allied professionals comprise a significant portion of the law library workforce, yet their experiences and career pathways are often overlooked in discussions about the profession’s future. This article presents findings from a survey examining how allied professionals pursue professional development, upskilling, and career mobility. While respondents demonstrated a strong commitment to growth, opportunities varied widely and were often limited by institutional support. The authors discuss the survey findings, explore the implications for the profession, and offer recommendations for better supporting allied professionals and recognizing their essential contributions to law librarianship. This is the first in a two-part series.

International Law, The Courts, And The Political Branches Of Singapore: Painting A Complete Picture, Benjamin Joshua Ong

Research Collection Yong Pung How School Of Law

In line with Singapore's vision of the separation of powers, the courts' duty is primarily to give effect to domestic law; the political branches take the lead in engaging with international law. A study of Singapore's interface with international law would therefore be incomplete were it to consider only the courts' role and not the political branches' model of international law as primarily a guarantor of Singapore's sovereignty and standing as a participant on the international stage. The political branches have been circumspect in engaging with international law in other areas, such as human rights, preferring a specifically Singaporean vision …

The Shareholder’S Standing To Challenge The Exercise Of Directorial Power: Tianrui (International) Holding Company V China Shanshui Cement Group Ltd, Pearlie M. C. Koh

Research Collection Yong Pung How School Of Law

An enduring problem with the proper purposes duty is the apparent right of the shareholder to enforce the same despite the duty being owed to the company. The cases on the proper purpose duty have thus far simply assumed the right of the shareholder to do so without dealing with the question of standing. In Tianrui (International) Holding Company Ltd v China Shanshui Cement Group Ltd, the Privy Council dealt with this issue directly and affirmed the shareholder's right to bring the action on the basis of the statutory contract constituted by the memorandum and articles of association of the …

Subfascial-Cutaneous Propeller Flap For Reconstruction Of Chronic Distal Lower-Limb Wounds With Exposed Bone: Two-Case Reports, Musa Machibya, Mike Kimambo, Irfan Rajput, Raymond Oyugi, Edwin Mrema

General Surgery, East Africa

Introduction and importance: Propeller perforator flaps provide a reliable reconstructive option for distal lower-limb soft-tissue defects, particularly in resource-limited settings where microsurgical free-flap reconstruction may not be readily available. These cases highlight the practical application of propeller perforator flaps in a low-resource setting, demonstrate key surgical decision-making processes, illustrate the management of flap-related complications, and report favorable functional outcomes following reconstruction of complex distal lower-limb wounds.

Case presentation: We present two patients with distal lower-limb wounds and exposed bone: a 33-year-old man with a post-traumatic medial malleolar defect reconstructed using a posterior tibial artery perforator propeller flap, and …

La Casa Marco, Elena Bordes Marcellán

Grado en Diseño de Interiores

El proyecto convierte la vivienda en un marco habitable donde la arquitectura histórica y el arte contemporáneo coexisten como una única colección.

Nuevo Capítulo, Ramón Rosales López

Grado en Diseño de Interiores

Nuevo Capítulo es un proyecto de reforma interior que transforma una vivienda existente situada en Calle Serrano 130, en el barrio de El Viso de Madrid, en una vivienda colectiva de transición para adultos extutelados. La propuesta parte de una situación social concreta: la dificultad que experimentan muchos jóvenes al abandonar el sistema de protección y tener que iniciar una vida adulta de manera anticipada, con menos red familiar, menos estabilidad económica y menos margen para equivocarse que otros jóvenes de su edad. El proyecto entiende la vivienda como una herramienta de apoyo. No se plantea únicamente como un conjunto …

The Syntra Collective, Diana Palomares Bernabé

Grado en Diseño de Interiores

El proyecto tiene como objetivo explorar la capacidad de la arquitectura para sanar a las personas. El club holístico se organiza en torno a tres áreas de intervención; la sanación física, mental y espiritual. Entendidas como un recorrido continuo y no como espacios aislados, reflejando una filosofía donde el bienestar del individuo es una necesidad cotidiana y no un lujo ocasional. Se propone así un nuevo concepto de lujo, donde lo verdaderamente valioso no es lo material, sino la inversión en uno mismo. Para el diseño se han tenido en cuenta diversos Objetivos de Desarrollo Sostenible, con el fin de …

The Flooded House, Lucía Revenga Bulo

Grado en Diseño de Interiores

This project originates from a reflection on the emotional relationship that many people maintain with the sea and on how contemporary urban life, characterised by speed, density, and a disconnection from natural rhythms, tends to distance us from the feelings of calm, contemplation, and freedom that it evokes. From this premise, the intervention proposes to symbolically bring the maritime experience into the Casa del Marqués de Villora, reinterpreting the house as a space capable of restoring this emotional connection through architecture. The initial question that gave rise to the project was both simple and radical: what would happen if the …

Croma. El Color Como Herramienta Perceptiva Del Espacio, Carla Balaguer González

Grado en Diseño de Interiores

Históricamente, el color ha sido empleado en la arquitectura y en el diseño de interiores como un recurso para definir espacios y fortalecer identidades visuales. No obstante, el color tiene un poder mucho más profundo: altera la percepción, transforma la experiencia espacial y determina ciertas reacciones conductuales y emocionales en las personas que viven en un lugar. Este trabajo de fin de grado estudia cómo se relacionan la psicología del color y el diseño de interiores a través de la creación de un centro cultural experimental. La idea undamental del proyecto es que el color puede ser una herramienta para …

Alquimia. Cocteleria Molecualar, Lía Núñez Sánchez

Grado en Diseño de Interiores

La propuesta nace de la idea de convertir la gastronomía en una experiencia participativa. Alquimia entiende la coctelería molecular como un espectáculo sensorial donde los visitantes descubren nuevas texturas, aromas, colores y sabores a través detécnicas inspiradasenlaquímicayfísica. Más que un lugar para consumir, el proyecto se plantea como un espacio para aprender, experimentar y sorprenderse. La estética del laboratorio se reinterpreta desde una visión contemporánea, lúdica y colorida, generando ambientes capaces de despertarlacuriosidadyfomentarelaprendizaje. La cocina molecular se convierte en el eje de la experiencia. Los cócteles se elaboran mediante cuatro técnicas principales: esferificaciones, que encapsulan líquidos en delicadas membranas; espumas …

Óol. The Root Of Aroma, Ximena Delgado Santiago

Grado en Diseño de Interiores

ÓOL is a key term in the Mayan language that translates as the soul, the heart, or the spiritual center of a living person. It goes beyond the physical organ; it represents vital energy, willpower, fortitude, and the totality of emotions and feelings. The project aims to bring México to Madrid through its scents, creating a space for sensory transformation. The intervention aims to create a contrast between the pre-existing rectangularity and a space with a more organic and fluid geometry. The design uses botany, nature, and scent as inspiration for the configuration of the space, creating an atmosphere of …

Oltre La Passerella, Valeria Alessandra Acosta Maggi

Grado en Diseño de Interiores

La propuesta plantea la rehabilitación de la Casa para el Marqués de Villora, obra de Rafael Bergamín, para transformarla en un espacio cultural y experiencial dedicado a la figura de Valentino Garavani y a su contribución al mundo de la alta costura.

La intervención se concibe como un espacio capaz de albergar exposiciones, presentaciones, desfiles, encuentros culturales y eventos vinculados a la trayectoria de Valentino Garavani, permitiendo acercar su obra al público desde una perspectiva contemporánea y experiencial. Más que un museo tradicional, el edificio se plantea como una experiencia inmersiva donde el visitante descubre progresivamente el universo Valentino a …

Mandatory Cooperation Under International Law, Evan J. Criddle, Evan Fox-Decent

Faculty Publications

Humanity in the twenty-first century faces serious global challenges and crises, including pandemics, nuclear proliferation, violent extremism, refugee migration, and climate change. None of these calamities can be averted without robust international cooperation. Yet, national leaders often assume that because their states are sovereign under international law, they are free to opt in or out of international cooperation as they see fit. This book challenges conventional wisdom by showing that international law requires states to cooperate with one another to address matters of international concern – even in the absence of treaty-based obligations. Within the past several decades, requirements to …

Homeos. Centro Integral De Consciencia Y Bienestar, Lucía Espinar Reguero

Grado en Diseño de Interiores

HOMEOS es un proyecto de reforma integral de un edificio destinado a la creación de un Centro de Consciencia y Bienestar, que integra espacios dedicados al cuidado de la salud mental, el desarrollo personal y el equilibrio emocional. El programa se enfoca en la combinación de terapia psicológica, actividades grupales y espacios de relajación, con el objetivo de ofrecer un entorno que favorezca la introspección, la regulación emocional y el crecimiento personal del usuario. El diseño arquitectónico se inspira en diversas teorías psicológicas, especialmente en el modelo de la mente propuesto por el psicoanalista Sigmund Freud, que distingue los niveles …

Cima. Climbing Center, Cristina López Extremo

Grado en Diseño de Interiores

The interior spaces are designed to reflect the identity and values of the mountannering clubs and the wider culture of climbing and mountain sports. Through both materiality and atmosphere, the project seeks to create an environment strongly connected to the experience of mountaineering and the community it supports. Elements such as tensioned ropes, climbing cords, carabiners, metal details, and topographic elements reference the equipment commonly associated with climbing and alpine activities. The overall aesthetic is clean and functional, with restrained use of colour inspired by the visibility of climbers against rocky mountain landscapes. Together, these spaces reinforce the identity of …

Parallel. Club Cognitivo, Miguel Esteve Cortes

Grado en Diseño de Interiores

l ejercicio plantea la transformación del inmueble para un uso alternativo al residencial, proponiendo una nueva manera de habitar el espacio a través de un programa contemporáneo capaz de responder a las necesidades actuales sin alterar la esencia arquitectónica del edificio. La intervención busca establecer un diálogo entre el patrimonio existente y una nueva propuesta de uso, integrando arquitectura, interiorismo y paisaje bajo una misma estrategia proyectual. Como respuesta a este planteamiento nace Parallel, un club privado concebido como un espacio dedicado a la reflexión, el intercambio de ideas y el desarrollo creativo. A través de una secuencia de ambientes …

Star Vale. Design For Gentle Transition, Nadia Sue Juneide

Grado en Diseño de Interiores

While perhaps a bit unorthodox, the idea to design a pediatric palliative care facility for my thesis really came from watching a New York Times video on the lack of it in the United States (NYT, 6). Fascinated, this lead to a rabbit hole on what consisted of palliative care, what options there were for parents, and what it looked like in Spain, which concluded in me seeing that the problem is the same here (Porqueviven, 7). A year later, when it was time to chose a topic to design for, I thought I would try to tackle what I …

Sync_Hub, Jose Luis Álvarez Quesada

Grado en Diseño de Interiores

SYNC_HUB, un proyecto que propone la reutilización de un edificio existente para convertirlo en un ecosistema destinado a la creación musical contemporánea. La intervención parte del respeto hacia la arquitectura preexistente, evitando transformaciones irreversibles y apostando por un sistema modular construido en seco que se inserta en el edificio como una nueva infraestructura independiente. Más allá de la incorporación de un programa funcional, el proyecto plantea una reflexión sobre la relación entre patrimonio, arquitectura y cultura contemporánea. La propuesta entiende el edificio como un soporte capaz de acoger nuevas formas de uso sin perder su identidad, estableciendo un diálogo entre …

Osmosis “Where Nature Encourages Becoming”, Jimena Cuevas Tello

Grado en Diseño de Interiores

Osmosis proposes the transformation of “Casa del Marqués de Villora,” designed by Rafael Bergamín, into a cultural and recreational centre dedicated to art, nature, and thought. Located on Calle Serrano in Madrid, the project reimagines the historic building as a “living ecosystem” where visitors can engage with culture while reconnecting with themselves and the environment. The project creates an opportunity to provide not only functional spaces but also spaces capable of supporting reflection, learning, creativity, and renewal in a contemporary city such as Madrid, where there is constant movement, stimulation, and acceleration that often leave little room for contemplation and …

Atmosphaera, Esther Marín Rico

Grado en Diseño de Interiores

Necesidad de abordar la transformación interior integral de la Casa del Marqués de Villora, adaptándola a un nuevo uso contemporáneo sin perder la sensibilidad hacia su valor arquitectónico y cultural. El propósito general consiste en reinterpretar la vivienda desde el respeto a su identidad racionalista, garantizando al mismo tiempo su adecuación funcional a las necesidades actuales.

El proyecto incorpora además el diseño integral del nuevo espacio interior, abordar la organización espacial, la selección de materiales y acabados, el tratamiento de la iluminación, la elección de mobiliario original o reinterpretado del periodo y la inclusión de criterios de sostenibilidad y eficiencia …

Golden Symbiosis, Marta Susperregui Muñoz

Grado en Diseño de Interiores

The concept of Golden Symbiosis emerges from the desire to redefine the relationship between aesthetics, wellbeing, and nature. The term Golden refers to the therapeutic and symbolic value of bee-derived products such as honey, propolis, royal jelly, beeswax, and pollen. For centuries, these natural substances have been associated with healing, nourishment, and regeneration. Within the project, they form the basis of the clinic’s treatment philosophy while representing a return to more restorative and preventative approaches to skin health. The term Symbiosis refers to a mutually beneficial relationship between different living systems. Applied to this project, it becomes the guiding architectural …

El Faro. Coliving Para Personas Con Ritmos De Vida Nocturnos, Leticia Uzquiano Fernández

Grado en Diseño de Interiores

El proyecto busca transformar la Casa del Marqués de Villora en un coliving capaz de responder a una forma de habitar poco atendida: la de quienes viven, trabajan y descansan en horarios desplazados. La propuesta no parte únicamente de introducir un nuevo programa en un edificio existente, sino de revisar cómo una vivienda puede adaptarse a rutinas distintas, a nuevas formas de convivencia y a necesidades que el modelo doméstico convencional apenas contempla.

El objetivo principal es construir una vivienda compartida que acompañe esos ritmos sin convertirlos en aislamiento. Para ello, el proyecto trabaja con distintos grados de intimidad y …

Bloom By Rowse, Julia Jiménez González

Grado en Diseño de Interiores

BLOOM nace de la esencia de ROWSE: una marca que invita a conectar con uno mismo, a encontrar la calma y a descubrir el placer del autocuidado. Inspirándose en estos valores, el concepto del espacio se construye creando una atmósfera entorno a la geometría más orgánica que existe: el círculo, presente en todos los frascos y productos de la marca. Esta figura, se traslada al diseño de BLOOM en forma de recorridos, volúmenes y detalles circulares, creando un entorno amplio, minimalista y sensorial, pensado para poder experimentar la cosmética más allá del producto.