Titis Wijayanto

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Verified

Titis verified their affiliation via an institutional email.

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• PhD
• Associate Prof at Universitas Gadjah Mada

Human thermoregulation is essential for maintaining a core body temperature of around 37 °C. In a hot environment, the autonomic nervous system centrally controls this process by regulating vasomotor and sudomotor responses. At the same time, peripheral mechanisms manage skin blood flow and sweat responses across the body. These processes are influ...

Working in hot and humid environments poses significant challenges to thermoregulation and potentially affects performance and health. Strategies for mitigating heat stress are critical for workers exposed to high thermal loads. This study investigated practical cooling strategies, that is, phase-change vest (PCV) cooling and crushed ice (ICE) inge...

Situation Awareness (SA) refers to a person’s understanding of their environment and ability to predict future states. Various studies emphasize SA’s importance and accurate measurement methods to determine the actual effects of elements in the environment to achieve SA. The phenomenon of distracted walking due to the rise of mobile phone technolog...

The growing competition among coffee shops demands effective strategies, including the development of optimal pricing. An optimal pricing strategy must account for both changes in coffee ingredients and consumers' willingness to pay (WTP). This study investigated the factors influencing consumers' WTP and determined optimal prices through sensory e...

Detecting emotions from facial images is difficult because facial expressions can vary significantly. Previous research on using deep learning models to classify emotions from facial images has been carried out on various datasets that contain a limited range of expressions. This study expands the use of deep learning for facial emotion recognition...

The use of personal protective equipment (PPE) for virus handling has the side effect of heat stress, which requires intervention to improve. This study aimed to evaluate the comfort of a newly designed PPE ensemble for virus handling. Three types of PPE ensembles were tested: reg-ular PPE as a control, PPE plus breathable cooling wear (cooling wea...

Online developments encourage various store businesses to set up online stores or e-commerce, including buying and selling batik products. Batik as one of the masterpieces as world-recognized Indonesian cultural heritage, is still being done by Small-Medium Industry (SMIs). Currently, batik SMI still has technological limitations, even though there...

Background: The use of social media as a platform to access news and information has the potential to lead to the spread of fake news in Indonesia. This study aims to (1) understand the trust characteristics in information of Indonesians during COVID-19; (2) identify Indonesians' ability to detect COVID-19 fake news; and (3) analyze the relationsh...

Today, fake information has become a significant problem, exacerbated by the acceleration of access to information. The spread of fake information has a dangerous impact, especially regarding global health issues, for example COVID-19. People can access various resources to obtain information, including online sites and social media. One of the met...

Product evaluation is an essential aspect of the product design and development process to improve an existing product significantly. In many cases, consumers rely on their subjective and emotional judgement on their product perception. Kansei is a Japanese term that encompasses the concept of sensibility, impression, and emotion. This study aims a...

Emotions play an essential role in humans. It exerts influence on their decision-making, reasoning, and behaviour. Human emotional responses to any kind of stimuli are commonly evaluated using human brain signals. This study aimed to classify human emotional responses to visual stimuli using a four-channel MUSE band 2, low-cost electroencephalograp...

This review mainly aimed to introduce the findings of research projects comparing the responses of tropical and temperate indigenes to heat. From a questionnaire survey on thermal sensation and comfort of Indonesians and Japanese, we found that the thermal descriptor “cool” in tropical indigenes connotes a thermally comfortable feeling, suggesting...

Pedestrian safety is affected by their environment. Reduced pedestrian awareness is generally due to walking being an activity repeatedly every day. Situation Awareness (SA) measurements can evaluate a pedestrian's ability to handle environmental situations. This refers to the importance of knowing the SA of pedestrians using effective measurement...

Fatigue resulting from driving has been the subject of interest in many studies, particularly due to its pertinent role in road traffic crashes. Fatigue can be evaluated by certain indicators, such as changes in neural activity. The objective of this study was to characterize fatigue associated with prolonged simulated driving by employing electroe...

The unprecedented of the COVID-19 pandemic has enforced many Indonesian organizations to introduce work from home (WFH) arrangements. With a lack of preparation and little prior experience, such working arrangements may adversely impact employees' well-being and work-related outcomes. This study aims to investigate the conditional or moderator effe...

Crowdfunding is one of the alternative sources of finance for product-based startups. Products are funded if the campaign is considered to be successful in reaching the target. The assessment of the success rate of product campaigns develops into three successive levels, namely overfunding, successful and unsuccessful. Due to the complication of se...

Background: The COVID-19 pandemic has increased some psychosocial risks which may aggravate the development of musculoskeletal disorders (MSDs) and reduced psychological well-being, two leading global occupational health problems. Objective: This study aims to investigate whether an employee's psychological well-being mediates the relationship b...

BACKGROUND M-health use in low- and middle-income countries is expected to overcome the widespread health system barriers such as health professional shortages, cost of services and transportation. However, the use of m-heath in those countries including in Indonesia is not as expected, probably due to low acceptance and willingness to use the m-he...

Air traffic control (ATC) operations including conflict detection and resolution mainly consist of spatial and multi tasks. The analysis of gender differences in performing spatial and multi tasks in the context of air traffic control remain absent. This study aimed to investigate the influence of traffic factor (i.e., conflict geometry) and gender...

This study investigated whether wearing phase change material (PCM) packs made of edible oils, such as coconut oil (CO) and palm oil (PO), after engaging in physical activities can alleviate heat strain in a hot and humid environment. Eleven healthy young males performed a treadmill exercise for 30 min. After the physical activity, the participants...

Investigating the underlying predictors of speeding behaviour deserves the full attention of research. This study aims to examine the effects of demographic variables on the perceived deterrent mechanisms and to predict speeding behaviour to target appropriate prevention programmes. In this study, 212 randomly selected drivers having a valid car dr...

Trust is an important aspect for policy makers in recommending the implementation of Industry 4.0 in food and beverage small and medium-sized enterprises (SMEs). SMEs’ trust in the implementation of Industry 4.0 is defined as the level of belief in applying appropriate technology for Industry 4.0 based on their knowledge, familiarity, agreement and...

This paper concerns the feasibility study of 7 classes of thermal sensation detection in Indonesia's indoor environment using a low-cost thermal camera through face skin temperature. This study is required as an initial step to build a thermal comfort sensor system of HVAC control systems to produce a comfortable indoor environment with minimum and...

Interaction with secondary devices such as in-vehicle navigation system (IVNS) while driving has been reported to distract the driver from the driving task. There have been few studies investigating the distracting effect of IVNS on driving performance and situation awareness. However, the potential impact of distraction from display modality types...

Online customer reviews (OCRs) are the text features of a consumer feedback on the crowdfunding platform. Utilization of OCRs as online survey provide an opportunity to obtain extensive and fast data about product information, experience of use and services. OCRs can be important information to identify consumer desires for a product design. This r...

This study aims to investigate how situation awareness (SA) when driving in sleep-deprived condition mediates the effect of sleep deprivation and driving performance in young drivers. Fifteen male students (mean age 21.1 ± 0.8 years) underwent two 45-min driving simulation sessions in random counterbalanced order: one in the morning after approxima...

Cybersickness is one of the common problems related to Virtual Reality (VR). The symptoms are classified into three categories: nausea, oculomotor, and disorientation. The purpose of this study is to identify cybersickness symptoms based on simulator sickness questionnaire (SSQ) and physiological signal using heart rate variability (HRV) when weari...

Effective management of patient flow in the outpatient unit of a hospital is the key to achieving operational excellence. Hospital X, as one of the major hospitals in Indonesia, launched a mobile hospital appointment system (X-Go) to increase the effectiveness of patient flow management. Although the application has a good rating, only less than 28...

Along with the development of technology, the launching of new devices often leaves the usability problems for the elderly behind. It happens not only for devices but also its application, i.e., entertainment applications, health applications, learning applications, etc. Most of the time, the elderly find it hard to use due to its usability problem...

Trust influenced the attractiveness of ergonomic programs to Small Medium-sized Enterprises (SMEs) workers as individuals and groups as the collective. A framework of Kansei Engineering-based System for Agro-industry (KESAN) was proposed for worker trust assessment using a platform of Kansei engineering and artificial intelligence. A fuzzy inferenc...

Street food outlets have a complex problem that shape the economic landscape of many countries. Many factors such as technology, organization and human factors are involved in this business process. Technology and human cooperation has opened the new realm industry in the real-world settings, in such applications, human and technology interaction p...

This study investigates users’ trust and reliance toward navigation systems. Forty participants participated in the experiment comparing Google Maps and Waze that have different mechanisms (data-based vs community-based). Our findings revealed that users had higher trust in Waze than Google Maps, due to the higher degree of flexibility in informati...

The visual menu design is one of the essential issues in Human-Computer Interaction (HCI). Gestural operations on touchscreens will play an essential role in the future HCI. Pinch gesture is the most common one, and its two operations: zooming and rotation, are usually performed on touchscreens device. At present, previous studies have not specific...

Traffic accident is one of the main causes of death among young drivers, both in developed and developing country. Sleep deprivation is agreed to be one of the major contributing factors. In this study, we investigate the effect of sleep deprivation on visual attention during driving and how it contributes to driving behaviors and performance. Twel...

The purpose of this study was to investigate the effects of clothing fit and material of Islamic sportswear for female on physiological responses and body heat balance during exercise in warm and humid environment. Twelve healthy female students (20.3±0.4 years) exercised wearing four types of women’s Islamic sportswear comprised of two level of cl...

Background: Heat acclimatization studies have reported that tropical natives have better physiological function to tolerate heat exposure compared to those from temperate natives, in which may result in a better ability to show a better resistance to performance losses during heat stress. In this study, we investigate whether the degree of heat ac...

This study aims to investigate the differences between engineering students and engineers on whistleblowing intentions, the effect of cultural dimensions on whistleblowing intentions, and the effect of ethnic differences on whistleblowing intentions. Each respondent was faced with three cases: a case involving a superior, a case involving a colleag...

Background: Human adaptability to cold environment has been focused on in the physiological anthropology and related research area. Concerning the human acclimatization process in the natural climate, it is necessary to conduct a research assessing comprehensive effect of cold environment and physical activities in cold. This study investigated th...

This study aimed to investigate the effect of repeated cooling of forearm muscle on adaptation in skeletal muscle metabolism. It is hypothesized that repeated decreases of muscle temperature would increase the oxygen consumption in hypothermic skeletal muscle. Sixteen healthy males participated in this study. Their right forearm muscles were locall...

Introduction: The purpose of this study was to investigate the influences of coconut oil or palm oil based phase change material (PCM) underneath coverall prior to performing physical activities in hot-humid environment on heat strain. Method: Eight healthy young males performed physical activity by walking on a treadmill at a speed set equivalent...

The purpose of this study was to investigate the physiological and psychological responses during exercise in a warm and humid environment in participants wearing two different types of women's Islamic sportswear. Ten healthy female students (21.1±1.9 years) exercised on two separate occasions, and in random order, wearing two types of women's Isla...

Studies involving simulator are often used to support scientific research, such as research on post-traumatic stress disorder (PTSD) and fear of flying. However, the use of driving simulator may produce biomedical side effect, namely cybersickness. Although the research of simulator sickness has been done before, there is no study that focuses on h...

This study investigated the effect of hydration differences on body fluid and temperature regulation between tropical and temperate indigenes exercising in the heat. Ten Japanese and ten Malaysian males with matched physical characteristics (height, body weight, and peak oxygen consumption) participated in this study. Participants performed exercis...

Abstract Background In this study, we investigated the effects of duration of stay in a temperate area on the thermoregulatory responses to passive heat exposure of residents from tropical areas, particularly to clarify whether they would lose their heat tolerance during passive heat exposure through residence in a temperate country, Japan. Methods...

This study investigated the effects of passive heat exposure on pre-frontal cortex oxygenation and cognitive functioning, specifically to examine whether the change in pre-frontal cortex oxygenation coincided with cognitive functioning during heat exposure. Eleven male students who participated in this study immersed their lower legs to the knees i...

The purpose of this study was to explore whether there is evidence of heat acclimatization in the words used to express thermal sensation. A total of 458 urban Japanese and 601 Indonesians participated in a questionnaire. In addition, in a preliminary survey, 39 native English speakers in the UK participated. Our results showed that (1) for Indones...

The objective of this study was to investigate thermoregulatory responses to heat in tropical (Malaysian) and temperate (Japanese) natives, during 60 min of passive heating. Ten Japanese (mean ages: 20.8 ± 0.9 years) and ten Malaysian males (mean ages: 22.3 ± 1.6 years) with matched morphological characteristics and physical fitness participated in...

This study investigated the differences in heat dissipation response to intense heat stress during exercise in hot and humid environments between tropical and temperate indigenes with matched physical characteristics. Ten Japanese (JP) and ten Malaysian (MY) males participated in this study. Subjects performed exercise for 60 min at 55% peak oxygen...

There are several types of cold adaptation based on the alteration of thermoregulatory response. It has been thought that the temperature of repeated cold exposures during the adaptation period is one of the factors affecting the type of cold adaptation developed. This study tested the hypothesis that repeated mild cold immersions would induce an i...

For the coherent understanding of heat acclimatization in tropical natives, we compared ethnic differences between tropical and temperate natives during resting, passive and active heating conditions. Experimental protocols included: (1) a resting condition (an air temperature of 28°C with 50% RH), (2) a passive heating condition (28°C with 50% RH;...

The purpose of this study was to investigate ethnic differences in cutaneous thermal sensation thresholds and the inter-threshold sensory zone between tropical (Malaysians) and temperate natives (Japanese). The results showed that (1) Malaysian males perceived warmth on the forehead at a higher skin temperature (Tsk) than Japanese males (p<0.05), w...

It is well known that women are physiologically and psychologically influenced by the menstrual cycle. In addition, the presence of background noise may affect task performance. So far, it has proven difficult to describe how the menstrual cycle and background noise affect task performance; some researchers have found an increment of performance du...

The purpose of the present study was to examine the discrepancies in rectal temperature (T (re)) at various depths. Nineteen young males performed two bouts of bicycle exercise and recovery. T (re) was simultaneously measured at depth of 4, 6, 8, 10, 13, 16, and 19 cm, alongside the measurement of skin temperatures. We found small but statistically...