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Welcome to At the Intersections. This week, we examine the signals that reveal the state of a system, from the patterns in human speech that relate to clinical conditions to the issuance of green bonds and its effect on corporate environmental performance. The issue also considers methods of influence and control, whether applying chemical agents to suppress algal blooms, using surface topography and heat to move fluid, or comparing the ethical codes that govern professional publishing.
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Does issuing a green bond improve a company's environmental performance?
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The issuance of green bonds is intended to fund environmentally friendly projects, but it is not fully clear how they influence the environmental performance of individual issuing companies. To investigate this, researchers compared companies that issued green bonds with those that issued conventional bonds, using modeling approaches to explore various non-linear relationships.
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Chen, Y., Erlwein-Sayer, C., Mamon, R., Spagnolo, F., & Spagnolo, N. (2026). The impact of green bonds on issuers' environmental performance. Quantitative Finance, 1-23. https://doi.org/10.1080/14697688.2026.2641012
Rogemar Mamon
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Can analyzing speech pauses improve the automated assessment of disorganized speech?
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Assessing formal thought disorder, a speech-related symptom of schizophrenia spectrum disorders, is challenging because traditional clinical rating scales are resource-intensive. To address this, researchers evaluated a framework that integrated speech pause patterns with semantic coherence metrics from three different types of recorded speech.
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Chen, F., Xu, W., Li, C., Pakhomov, S., Cohen, A., Bhola, S., Yin, S., Tang, S. X., Mackinley, M., Palaniyappan, L., Ben-Zeev, D., & Cohen, T. (2026). Reading between the lines: Combining pause dynamics and semantic coherence for automated assessment of thought disorder. Neuropsychologia, 228, 109473. https://doi.org/10.1016/j.neuropsychologia.2026.109473
Lena Palaniyappan
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Can speech patterns reveal psychosis before treatment begins?
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It can be difficult to detect features of psychosis, in part because speech data from individuals in the early stages of the condition is scarce. To address this, researchers collected speech samples, neuroimaging data, and clinical information from individuals in an early-stage psychosis program and from healthy controls over a 12-month period.
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Bhullar, S., Mouslih, C. E., Mackinley, M., Richard, J., & Palaniyappan, L. (2026). TOPSY: A picture description dataset to examine speech, language and communication in untreated first episode psychosis. Data in Brief, 66, 112788. https://doi.org/10.1016/j.dib.2026.112788
Lena Palaniyappan
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Do different harmful algae have the same chemical weakness?
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Harmful algal blooms from specific microalgae cause widespread fish mortality, posing a critical threat to the aquaculture industry. This study tested the susceptibility of three types of these ichthyotoxic flagellates to two chemical agents, hydrogen peroxide and copper sulfate.
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Mehdizadeh Allaf, M., Yi, T., Zhang, J., Zhang, S., Erratt, K. J., Dehnavi, P., & Peerhossaini, H. (2026). Chemical Control of Ichthyotoxic Algal Blooms in Aquaculture: Assessing Algicide Impacts on Cellular Motility and Bloom Suppression. Microorganisms, 14(5), 1086. https://doi.org/10.3390/microorganisms14051086
Hassan Peerhossaini
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Complex Adaptive Systems (CAS) Lab
Western University
1151 Richmond Street, London, Ontario N6A 3K7, CA
caslab@uwo.ca
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