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Otakaari 1 grandhall. Photo: Esa Kapila
 

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Recent Submissions

Mausteilla värjätty - luonnonvärjäyksen mahdollisuudet tekstiileissä
(2025) Nikulainen, Ella
 School of Arts, Design and Architecture | S harjoitus- ja seminaarityöt
This material study examined natural dyeing and the use of spices as colorants. Natural dyeing has a long tradition, and the roots of spice dyeing can be traced back to ancient India. As environmental awareness increases, natural and sustainable dyeing techniques are drawing growing interest as alternatives to synthetic dyes. Using spices and other natural materials in dyeing offers a way to reduce the use of chemical dyes, which may be harmful to both the environment and human health. India’s craft traditions where dyeing has been an integral part of culture and livelihood for centuries—provide valuable insights into natural dyeing methods. This study explored how these traditional dyeing techniques could be applied to the coloring of contemporary textile materials. The aim of the research was to make natural dyeing more approachable and accessible by using spices commonly available in grocery stores as dyes. A practical approach and the use of familiar materials helped lower the threshold for engaging with traditional dyeing techniques and enabled experimentation without specialized tools or hard-to-find materials. The study sought to promote the adoption of sustainable and eco-friendly dyeing methods by demonstrating how everyday, easily available food products can serve as ecological alternatives to synthetic dyes. The study was conducted as an experimental material investigation, focusing on the suitability of three different spices, turmeric, paprika, and cinnamon, for natural dyeing. Dyeing experiments were carried out on four different textile fibers: cotton, hemp, silk, and wool. This made it possible to compare how different fiber materials respond to spice-based dyes. The effect of mordanting was also examined. Three different mordanting methods were used: no mordant, alum mordant, and soy milk mordant. This allowed for an evaluation of the role of mordanting in dye adhesion and color vibrancy. Additionally, the dyeing trials were divided into two cooking temperature groups (60°C and 80–90°C) to assess the impact of temperature on dyeing results. All combinations of dye, fiber type, mordanting method, and cooking temperature were systematically documented and clearly tabulated. The diverse approach enabled the study of several variables affecting the outcome. The dyeing results showed that the properties of the spices used significantly influenced the success of the dyeing. Turmeric produced the strongest and most even tones across all fiber types, while paprika resulted in weaker and more uneven coloration than expected. Cinnamon proved to be a surprisingly effective natural dye, yielding soft, natural brown tones. Of the mordanting methods, samples mordanted with soy milk dyed almost as lightly as the unmordanted ones, whereas alum mordanting slightly enhanced the color depth. Wool absorbed color most intensely with all spices, demonstrating the generally better dye uptake of animal fibers compared to plant-based fibers. Differences in the composition of the dye baths and the unevenness of mordanting also affected the visual quality of the dyeing results, but at the same time offered opportunities to create unique and aesthetically interesting surfaces. The study showed that dyeing with spices presents an interesting and ecological alternative for textile coloration. Although the results varied depending on the spice used, the fiber material, and the mordanting method, a diverse palette of natural hues was achieved without synthetic chemicals. It would be interesting to continue this research by studying the dyeing properties of other spices and comparing the color performance of spices from different manufacturers. If spice dyeing were to be more widely adopted in the textile industry, it would also be beneficial to investigate the wash, light, and abrasion fastness of the dyed textiles.
Mikä suomalainen puulaji kestää nopeita kosteusvaihteluita parhaiten?
(2025) Jeskanen, Aino
 School of Arts, Design and Architecture | S harjoitus- ja seminaarityöt
Sustainability as a Brand Strategy
(2025-03-24) Lähdesmäki, Noora
 School of Business | Master's thesis
Leveraging Sustainability in Fashion Brand Marketing to Foster Brand Loyalty and Customer Engagement
Increase In Student Loans and Its Implications For Finnish Society
(2025-03-13) Hietala, Ville
 School of Business | Master's thesis
The present work addresses the Finnish student support system and reforms made in the last decade, with a special focus on student loans. It summarizes how student loan amounts and related problems have changed in recent years and what the changes have been in different subgroups. It additionally performs a descriptive regression analysis between the loan amounts and the loan-paying problems. The present work also examines the future challenges that students and Kela could face if the current support system is changed to be more student loan-oriented. Potential problems can be related to, for example, housing- and job markets. The loan pay-back methods are also explored. According to the analyses of the Kela student loan databases, it was seen that loan amounts by Finnish students increased significantly between the years 2014 and 2023. After some delay, the problems related to paying them back correspondingly increased significantly. Individuals born in the early 90s, women, and people residing in the largest counties compose the most affected subgroups. Furthermore, loans taken by individuals were positively correlated with the occurrence of financial problems 5 years after the loans were taken.
Bubble Trouble
(2025-03-02) Tarvainen, Juho
 School of Business | Master's thesis
We investigate whether market bubbles can be identified ex ante in the US stock market both unconditionally and based on certain characteristics. We study price run-ups in industry portfolios and see whether they are more likely to crash or not, or if their crashes can be predicted by volatility, turnover, age, age tilt, issu-ance, book-to-market, sales growth, cyclically adjusted price-to-earnings ratio, or price acceleration. By replicating the method used by Greenwood et al. (2019), we identify 35 out of 40 of the same run-ups and find that sharper price run-ups are more likely to crash. Contrary to the replicated study, we find that only past two-year raw returns and share issuance are positively correlated with the likelihood of a crash after a price run-up on a statistically significant level. When using the exact run-ups of Greenwood et al. we also find statistical signif-icance in change of volatility, age tilt, and price acceleration. The thesis contrib-utes to the debate about the existence and predictability of price bubbles and shows the difficulty in replicating results found earlier about the link between certain stock and company-level characteristics and bubbles. Despite earlier re-sults failing to replicate exactly, we show the case for some characteristics being able to predict bubbles, and that greater returns in price run-ups are more likely to lead to crashes.