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"Klang."
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Soundings : a contemporary score
\"Soundings\" investigates the ways in which some of the most innovative contemporary artists are working with sound today. These artists approach sound from a variety of disciplinary angles visual arts, architecture, performance, computer programming and music yet they share an interest in working with, rather than against or independent of, material realities.
Book
Occurrence, abundance, and distribution of microplastics pollution: an evidence in surface tropical water of Klang River estuary, Malaysia
Microplastics have been considered as contaminants of emerging concern due to ubiquity in the environment; however, the occurrence of microplastics in river estuaries is scarcely investigated. The Klang River estuary is an important ecosystem that receives various contaminants from urbanised, highly populated areas and the busiest maritime centre in Selangor, Malaysia. This study investigates the abundance and characteristics of microplastics in surface water of the Klang River estuary. The abundance of microplastics ranged from 0.5 to 4.5 particles L–1 with a mean abundance of 2.47 particles L–1. There is no correlation between the abundance of microplastics and physicochemical properties, while there is a strong correlation between salinity and conductivity. The microplastics were characterised with a stereomicroscope and attenuated total reflection–Fourier transform infrared spectroscopy to analyse size, shape, colour, and polymer composition. The microplastics in the surface water were predominantly in the 300–1000 μm size class, followed by > 1000 μm and < 300 μm, and were mostly transparent fibres, fragments, and pellets. Polyamide and polyethylene were the main polymer types in the composition of the microplastics, suggesting that the microplastics originated from heavily urbanised and industrial locations such as the port, jetty, and residential areas. The widespread occurrence of microplastics in the environment and subsequent penetration of aquatic food webs may pose a serious threat to organisms. This study provides baseline data and a framework for further investigation of microplastic contamination in estuaries.
Journal Article
Influence of elevated river flow on hypoxia occurrence, nutrient concentration and microbial dynamics in a tropical estuary
We sampled the Klang estuary during the inter-monsoon and northeast monsoon period (July–Nov 2011, Oct–Nov 2012), which coincided with higher rainfall and elevated Klang River flow. The increased freshwater inflow into the estuary resulted in water column stratification that was observed during both sampling periods. Dissolved oxygen (DO) dropped below 63 μM, and hypoxia was observed. Elevated river flow also transported dissolved inorganic nutrients, chlorophyll
a
and bacteria to the estuary. However, bacterial production did not correlate with DO concentration in this study. As hypoxia was probably not due to in situ heterotrophic processes, deoxygenated waters were probably from upstream. We surmised this as DO correlated with salinity (
R
2
= 0.664, df = 86,
p
< 0.001). DO also decreased with increasing flushing time (
R
2
= 0.556, df = 11,
p
< 0.01), suggesting that when flushing time (> 6.7 h), hypoxia could occur at the Klang estuary. Here, we presented a model that related riverine flow rate to the post-heavy rainfall hypoxia that explicated the episodic hypoxia at Klang estuary. As Klang estuary supports aquaculture and cockle culture, our results could help protect the aquaculture and cockle culture industry here.
Journal Article
The silent burden of intestinal parasitic infections and associated risk factors in Malaysian public housing schemes
Intestinal parasitic infections (IPIs) are largely overlooked in Malaysia’s rapidly urbanising areas, while thriving in conditions of poor sanitation, environmental decline, and high population density. Studies in Malaysia are largely skewed towards indigenous communities, with few focusing on other vulnerable sectors, including the inhabitants of public housing programs (PHP)—often plagued with poor facilities and indiscriminate waste management. We assessed the prevalence of IPIs and their associated risk factors amongst occupants of PHPs in Klang Valley, Malaysia, recruiting 394 residents from 19 PHPs and screening stool samples via six microscopy techniques. Overall prevalence was moderate (19.3%), with 76 participants infected with at least one intestinal parasite.
Ascaris lumbricoides
was the most prominent species (13.5%), followed by
Trichuris trichiura
(6.1%), and
Cryptosporidium
spp. (0.51%). Significant associations between helminthic infections and individual risk factors included locality, presence of pest breeding grounds, pet keeping, failure to use soap during handwashing, and overflowing waste collection facilities. No significant factors were associated with the protozoan infections. These results highlight the presence of IPIs in the urban poor communities, potentially attributed to poor maintenance of housing facilities and lack of civic consciousness amongst the occupants, calling for better, integrated interventions to improve the livelihoods of these communities.
Journal Article
Air Pollution, Cardiovascular and Respiratory Admissions in Klang Valley, Malaysia - Finding the Effects
This study aims to determine the association and risk of daily fluctuations of air pollution parameters in Klang Valley, Malaysia, with cardiovascular and respiratory admissions. The data on admissions and air pollution concentrations were obtained from various government agencies in Malaysia. The associations were estimated using a time series analysis of Poisson regression. The effects for every 10μ/m3 increase in pollutants were reported as Relative Risk (RR). SO2 showed the highest association with immediate effects at lag 0 for all cardiovascular admissions followed by NO2. Gaseous pollutants of SO2 and NO2 showed a higher risk among elderly more than 60 years old. Immediate effects were found in both genders, with higher risks observed in males. NO2 continues to be suggestively associated with all respiratory admissions. Children less than 9 years old presented a higher risk of NO2 at various lag times with the highest value at lag0, followed by PM10. Stratified analysis showed an incremental risk of respiratory admissions for males exposed to NO2 compared to females. We found noteworthy associations for overall and age-specific admissions of cardiovascular and respiratory with the pollutants. Compared to particulates pollutant, gaseous pollutants showed a higher risk in both admissions.
Publication
Sonic Agency
In a world dominated by the visual, could contemporary resistances be auditory? This timely and important book highlights sound's invisible, disruptive and affective qualities and asks whether the unseen nature of sound can support a political transformation.
eBook
Daily Forecasting of Dam Water Levels: Comparing a Support Vector Machine (SVM) Model With Adaptive Neuro Fuzzy Inference System (ANFIS)
Reservoir planning and management are critical to the development of the hydrological field and necessary to Integrated Water Resources Management. The growth of forecasting models has resulted in an excellent model known as the Support Vector Machine (SVM). This model uses linearly separable patterns based on an optimal hyperplane, which are extended to non-linearly separable patterns by transforming the raw data to map into a new space. SVM can find a global optimal solution equipped with Kernel functions. These Kernel functions have high flexibility in the forecasting computation, enabling data to be mapped at a higher and infinite-dimensional space in an implicit manner. This paper presents a new solution to the expert system, using SVM to forecast the daily dam water level of the Klang gate. Four categories are identified to determine the best model: the input scenario, the type of SVM regression, the number of V-fold cross-validation and the time lag. The best input scenario employs both the rainfall R(t-i) and the dam water level L(t-i). Type 2 SVM regression is selected as the best regression type, and 5-fold cross-validation produces the most accurate results. The results are compared with those obtained using ANFIS: all the RMSE, MAE and MAPE values prove that SVM is a superior model to ANFIS. Finally, all the results are combined to determine the best time lag, resulting in R(t-2) L(t-2) for the best model with only 1.64 % error.
Journal Article
The Lyre Book
Redefines modern lyric poetry at the intersection of literary and media studies.
eBook
Optimization of reservoir operation at Klang Gate Dam utilizing a whale optimization algorithm and a Lévy flight and distribution enhancement technique
Development, operations and management of multi-objective reservoirs, is vital for timely water supply. Optimisation studies were done at the Klang Gate Dam (KGD) utilising standard optimisation and dynamic programming; according to the technology then. Taking it further, the KGD was studied using the nature-inspired meta-heuristic algorithms (MHAs). The Whale Optimisation Algorithm (WOA) solves complex technical issues. The Lévy flight and distribution (LFWOA) was incorporated to increase productivity at the KGD. The aim of this study to minimise KGD's water deficit with WOA and LFWOA. The study comprises of two sections. The first section examined observed monthly inflow, demand, and storage data from 2001 to 2019, whilst the second compares performances to established MHAs, from 1097 to 2008. In the first section, LFWOA and WOA reliability were 60.53 and 58.33 %,respectively. For 2010, both methods gave similar vulnerability value. The LFWOA scored 1.04 while the WOA scored 1. In second section, the LFWOA satisfied 69.70% of exact demand, while the WOA met 56.06%. LFWOA had attained the least shortage. The LFWOA algorithm was the most robust among the MHAs (1.88). In short, the LFWOA is better on the count of reliability, resilience, and scarcity scores.
Journal Article
The Sound of Writing
An interdisciplinary exploration of how writers have conveyed sound through text.Edited by Christopher Cannon and Steven Justice, The Sound of Writing explores the devices and techniques that writers have used to represent sound and how they have changed over time. Contributors consider how writing has channeled sounds as varied as the human voice and the buzzing of bees using not only alphabets but also the resources of the visual and musical arts. Cannon and Justice have assembled a constellation of classicists, medievalists, modernists, literary historians, and musicologists to trace the sound of writing from the beginning of the Western record to poetry written in the last century. This rich series of essays considers the writings of Sappho, Simonides, Aldhem, Marcabru, Dante Alighieri, William Langland, Charles Butler, Tennyson, Gertrude Stein, and T. S. Eliot as well as poems and songs in Ancient Greek, Old and Middle English, Italian, Old French, Occitan, and modern English. The book will interest anyone curious about the way sound has been preserved in the past and the kinds of ingenuity that can recover the process of that preservation.Essays focus on questions of language and expression, and each contributor sets out a distinct method for understanding the relationship between sound and writing. Cannon and Justice open the volume with a survey of the various ways sound has been understood as the object of our senses. Each ensuing chapter presents a case study for a sonic phenomenology at a specific time in history. With approaches from a wide variety of disciplines, The Sound of Writing analyzes writing systems and the aural dimensions of literary cultures to reconstruct historical soundscapes in vivid ways.
eBook