International Journal of Global Optimization and Its Application
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Evaluating the Content Validity: Development of An Instrument for Measuring Functional Building Performance
Get PDFManaging the selection of relevant criteria for functional building performance is essential for the building management team because it is strongly related with building occupants’ satisfaction and achievement of organizational objectives. In the current state of functional building performance evaluation, previous studies have shown that the criteria vary that depends on the facility types and purpose of conducting performance evaluation. These selection criteria have a direct impact on functional building performance and need to be done in in a systematic way. The content validity of the functional building performance evaluation instrument is essential step in the instrument development. Therefore, this research aims to evaluate the content validity of Functional Building Performance (FBP) evaluation by using Content Validity Index (CVI) and modified Kappa coefficient. In achieving this research aim, a set of questionnaires was developed based on numerous construct items that obtained from previous studies by various authors and researchers. The selected expert panel in the field of historic building management and building performance evaluation such as local municipality, related government agencies, academician and building management team reviewed and rated the instrument to ensure its relevance and representativeness of each item. The final instrument contained 39 items that is valid and considered to be retained and all items will be further tested in next study. The result also shown the S-CVI/ Ave for all items meet the criterion of 0.90
Examining the Factors that Influence Consumer Willingness to Pay of Bubble Tea among Generation Z in Bandung, Indonesia
Get PDFBubble tea is a popular drink among Generation Z in Indonesia. However, the quality of bubble tea varies depending on intrinsic and extrinsic factors to make it more appealing. On the basis of consumers\u27 final economic activity, it is crucial to examine what factors influence consumer purchase decision behavior. Due to the bubble tea shop, owners will effectively meet customer expectations for bubble tea beverages. This study examines factors that may influence the consumer purchase decision (willingness to pay) of bubble tea and analyzes the price limit disparities. The research uses a quantitative approach by distributing questionnaires to 300 Generation Z domiciled at Bandung, Indonesia. This study examines several aspects, including price, taste, product design, brand influence, and location accessibility. Also, it analyzes whether the consumers\u27 purchase decision factor and the price limit of the respondents are different when it is divided based on demographic factors. The data were analyzed using multiple linear regression (MLR). This study found that taste, price, product design, brand image, and location accessibility individually and simultaneously affect the willingness to pay among Generation Z in Bandung City. Also, this study found differences in decision factors and price limits on bubble tea based on demographic factors. In conclusion, the current study has successfully examined the factors influencing consumer purchase decisions (willingness to pay) and analyzed the price limit disparities of bubble tea in Bandung, Indonesia
Using Routing Heuristics to Improve Cost Interoperability: Strategy, Modelling Annotations, and Dynamism
Get PDFRouting systems mechanisms have piqued researchers\u27 interest in heuristic components for routing problems that could alter problem complexity. As a result, myriad routing strategies were proposed that minimize deployment costs while maximizing traversal coverage. Several constraints were considered, including deployment times, load capacities, and projected coverage. Research into routing systems has focused on heuristics to optimize complex routing problems. Multiple strategies have been proposed to optimize deployment costs and maximize route coverage, focusing on deployment times, load capacities, and coverage. This literature study examines data interpolation for cost optimization features coupled with relative scheduling systems, with the primary purpose of supporting heterogeneity subjugation towards cost interoperability based on varied goals and objective functions. A total of 250 papers were analyzed for relevance regarding routing scheduling from relevant academic-based user-accessed scientific journal databases such as Scopus, Web of Science, Hindawi, ACM, and Google Scholar to perform a concise analysis of the relative cost interoperability measures in routing strategies, including single objective purposes undertakings. The research evaluated the application, niche problem-solving methodologies, and viability for future refinement or integration with comparable solutions. This qualitative study aims to present an information synthesis based on the PRISMA (Systematic Literature Review) framework on various recognized developments and trends for routing heuristic research works that will serve as a benchmark for refining improvisation on current solution strategies. Ultimately, this study presents a comprehensive review of the applicable field, an analysis of existing problem-solving strategies, and a comprehensive overview of the possibilities for incorporating them into further research
Investigating the Innovation and Application of Jackson Pollock\u27s (Drip Painting) Elements in Fashion Design
Get PDFAs a unique cultural carrier, clothing always reflects people\u27s way of life and aesthetic concepts. With the continuous development of global economic integration and the mutual integration of multiculturalism, people\u27s aesthetic needs for clothing are becoming increasingly diversified. The painting process of Jackson Pollock\u27s “drip painting” is carried out in an unconscious mental state, which is very subjective and random. It uses a combination of lines, colors, and shapes to portray nature in his imagination. At the same time, he also pays great attention to applying comprehensive materials. His creative idea can also be used in clothing, which can enrich the artistic language of clothing and improve the artistry of clothing. This study applies acrylic and colors hot melt adhesive to clothing fabric in a way similar to Pollock\u27s "drip painting" through practical research to test its fluidity and coloring effect on the fabric and the layering of lines. The experimental results conclude that the adaptability of hot melt adhesive stick and canvas fabric is very high, and its fluidity and stability can confirm the feasibility of applying it to clothing design. However, the performance effect of acrylic pigment in this practical research is not ideal. This study found that atypical clothing materials can make clothing more abstract and play a positive role in the personalized expression of clothing
Combination of Zero Waste Patterns to Maximize Multi Fabric and Wastra Nusantara Applications
Get PDFThe fashion industry has long been known as the ultimate source of waste in landfills. Many designers and fashion enthusiasts tried to introduce slower fashion to promote sustainability. Among many approaches, the zero-waste pattern (ZWP) has been known as the keyword that captures the attention of many. The baseline is to produce any fashion pieces with 15% waste or up to nearly 0% waste from a piece of cloth. Because of this definition, many designers are trapped into thinking that Zero Waste Fashion (ZWF) products should only use mono fabric. Indonesia has various local fabrics (wastra) that can be explored. The initial bottom line of wastra is to use the whole fabric with no cutting at all. Therefore, the same spirit of ZWF is found relatable to the use of wastra in the modern context. This study aims to find the right multi-fabric combination using zero waste patterns on wastra. This study uses a design thinking method with an experimental approach. The fabric used in this research is limited to plain modern fabric and wastra with the tie-dye technique. This study found that the sustainable cutting technique is highly efficient when applied to fabric with a width of 115 cm to produce five clothing items. The wastra used should have a pattern that can be rotated without considering the position of the motifs that must meet each other
Ride-Hailing Assignment Problem under Waiting Time Uncertainty using Interval-Valued Fuzzy Quadratic
Get PDFRide-hailing is a creative idea created by transportation supported by science and technology. Ride-hailing services can help daily community activities. The issue with ride-hailing is that traffic conditions are unpredictable, implying that waiting times are uncertain. The time passengers spend waiting from when they book a ride service until the driver arrives at the pick-up location is called waiting time. This study suggests a quadratic programming technique for minimizing waiting time while accounting for the unpredictability of pick-up travel time. The interval-valued fuzzy quadratic programming method handles the uncertainty and imprecision of the anticipated journey time. When allocating drivers to pick up passengers, interval-valued fuzzy numbers can provide a more realistic representation of waiting time uncertainty. As a result, the interval-valued fuzzy quadratic programming model can handle the uncertainty in waiting time for ride-hailing assignment problems. The model\u27s performance is evaluated using waiting time and the number of people served. The model\u27s performance is demonstrated numerically using the simulation-based case study. This study shows how to utilize a mathematical method to solve real-world problems with uncertainty and improve user welfare
Identifying the Growth Centers in Banda Aceh City, Indonesia: Before and After Tsunami
Get PDFThe city of Banda Aceh continues to grow and develop to this day after being hit by the tsunami disaster in 2004. The growth and development of Banda Aceh did not happen simultaneously. It can be seen in Meuraxa District, Jaya Baru District, and other districts affected by the Tsunami. As a result, the growth centers shifted in Banda Aceh City. The high level of development until 2021, using the GRDP of Banda Aceh City, which is 19.93 trillion rupiah, means that economic growth will also increase by 1.25 percent from 2003 before the Tsunami to 2021, thereby creating economic potential in Banda Aceh City. The developing economic interaction between sub-districts in Banda Aceh City will create the strongest interaction as a new growth center on the basis of data from before and after the Tsunami, namely the number of population increases and the absolute distance between the two regions. The gravity analysis model identifies interactions between sub-districts in Banda Aceh City. It means they have strong economic interactions as growth centers by gaining the strength of interaction between two regions in Banda Aceh City. The gravity analysis model produces interaction areas with the strongest interaction values in 2004 (before Tsunami), 2005 (after the Tsunami), and 2021 (currently), which are the interactions between Kuta Alam and Baiturrahman Districts with interaction values for each year of 283,084,961,591; 161,382,469,959 and 190,617,812,346
Sustainable Design in Motion Sensing Game for Autistic Children
Get PDFThe population of autistic children is increasing rapidly in recent years, and it has become an urgent public health problem. The practice has proved that motion-sensing games can help autistic children solve their symptoms and help them grow healthily. However, there are still some defects in the operation of these games recently, e.g., fixed space and time, high cost, and public welfare institutions. Furthermore, no effective solution has been proposed in the academic field. To fulfill this research gap, this study focuses on value co-creation with autistic children in a motion-sensing game. The methods involve a double diamond design model and sustainable design approaches as the basis for the creative convergence motion sensing game. This study used the concept of sustainable design to develop a new game experience promoting the well-being of autistic children and stakeholders. To achieve sustainability in creative convergence motion sensing games for autistic children, it is necessary to fully consider the game design\u27s technological innovation, social innovation, economic value, and diverse culture
The Interaction of Ergonomic and Anthropometric Factors in Occasional Chair Design for Elderly Malaysians
Get PDFThis research focuses on furniture ergonomics, specifically the occasional chair for elderly Malaysian. An ergonomics study in furniture design is essential to ensure its full functionality meets user satisfaction. The design must comfort the end user and reduce the risk of injury. Additionally, different ergonomic requirements must be considered depending on the age and environment of the user. As a result, to avoid injury and provide comfort to users, this study prioritises ergonomics chair design for a group of users in Malaysia, the elderly aged 60 and above. This study proposes a new design to meet the ergonomics requirements of elderly users. The vital need to meet comfort and reduce injuries for the elderly can be met through the study of ergonomics for the elderly, which can be applied to products in the future. The researcher has set the design parameter according to the anthropometric data from the Business and Institutional Furniture Manufacturers Association (BIFMA) standards. The assessment outcomes determine the ergonomic dimension requirements to provide comfort and safety. The suggested dimensions when through the simulation ergonomics analysis. The result shows that the new recommended dimensions comply with the Rapid Upper Limb Assessment (RULA). In conclusion, ergonomic design needs for the elderly due to lacking physical and mental strength
Investigating the Growth of Bacteria using Double Sigmoid Model with Reparameterization
Get PDFThe growth of an organism can be modeled using a growth curve. However, bacteria\u27s growth pattern differs from other organisms. Bacterial growth is divided into four phases: lag, logarithmic, stationary, and death. The experts re-parameterized the growth curve to match the growth phase of the bacteria. Bacterial growth patterns generally do not show a single sigmoid pattern but form two curves. Therefore, the double sigmoid model is more suitable. This study modeled the growth of the Pseudomonas putida bacteria by observing the optical density of the medium. Model parameters are estimated using the Non-Linear Least Square (NLS) method with the Gauss-Newton algorithm. The modeling results show that the double sigmoid model fits the growth curve of Pseudomonas putida better than the single sigmoid model. The Double Logistic model outperforms all models with the highest adjusted R2 and the smallest RMSE, AIC, and BIC values