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Understanding ‘Batik Belanda’ in Dutch Society via Co-Creation Experience of Creative Tourism Practice
Get PDFBatik Belanda is a long-established acculturated cultural heritage from the Dutch East Indies era. Some examples of Batik Belanda can be seen in Batik Buketan (bouquet) and Batik Snow White (folklore). However, the representation and understanding of Batik Belanda remain deceptive. Additionally, this specific batik is still underrepresented in modern society, losing its dialogical purpose as a heritage and its connection to Indonesian and Dutch individuals’ cultural identities. Developing creative tourism is one of the solutions to promote heritage – deemed to provide a better understanding via in-depth learning and personal contact. This qualitative research was conducted in the Netherlands to analyze the potential of Batik Belanda and creative tourism practice. The creative tourism practice was done by creating an immersive batik workshop with the goal of generating interest in both Indonesian and Dutch communities in the Netherlands to connect with their cultural heritage from Indonesia. Participants’ observations and interviews with 10 workshop participants served as the main methodology. This research indicated how participants’ experiences increased their understanding of cultural heritage and fulfilled their emotional needs through the workshop, giving them motivation and shaping their interest in the pre-visit stage of cultural tourism in Indonesia. On the other hand, their interest in culture and tourism in Indonesia was divided, determined by how they perceive post-colonial subjects and their cultural identities as a community in the Netherlands
Aktivitas Fisik Generasi Zillenial di Kota Bandung Berdasarkan Gender
No full textThe purpose of this study was to examine differences in the level of physical activity of zillenial generation based on gender. The method used is a quantitative research method with a comparative causal approach. The population of this study is generation Z who live in Kota Bandung. The sample in this study was 134 people with the sampling technique using Convenience Sampling. The physical activity instrument in data collection uses the Global Physical Activity Questionnaire (GPAQ). Data was analyzed using Mann Whitney U test. The description of the physical activity of the zillenial generation based on the GPAQ domain shows that in the domain of activity at work/study, travel to and from places and sedentary behavior there are no differences based on gender. Which shows that Generation Z does a lot of moderate physical activity. While in the domain of recreational activities there are differences based on gender. The results of the data analysis show the value of sig. p=0.453 > 0.05, data is significant. The results of this study concluded that there was no difference in the physical activity of zillenial generation based on gender.Penelitian ini bertujuan untuk menguji perbedaan tingkat aktivitas fisik generasi zillenial (Gen Z) berdasarkan gender. Metode yang digunakan dalam penelitian ini adalah metode penelitian kuantitatif dengan pendekatan kausal komparatif. Populasi penelitian ini yaitu generasi zillenial di Kota Bandung. Sampel dalam penelitian ini sebanyak 134 orang dengan teknik pengambilan sampel menggunakan Convenience Sampling. Instrumen aktivitas fisik dalam pengambilan data menggunakan Global Physical Activity Questionnaire (GPAQ) yang dikembangkan oleh WHO. Data di analisis menggunakan Uji Mann Whitney U. Aktivitas fisik generasi zillenial berdasarkan domain GPAQ diketahui bahwa pada domain aktivitas belajar, aktivitas perjalanan dan aktivitas menetap tidak terdapat perbedaan berdasarkan gender. Sedangkan pada domain aktivitas rekreasi terdapat perbedaan berdasarkan gender. Dapat digambarkan bahwa aktivitas fisik generasi zillenial di Kota Bandung masuk kategori sedang (47%). Hasil analisis data diperoleh nilai sig. p=0.453 > 0.05, maka data tersebut signifikan. Dilihat dari analisis data tersebut disimpulkan bahwa tidak terdapat perbedaan aktivitas fisik generasi Zillenial berdasarkan gender
Performance of Interconnected Hybrid ZigBee-Optic for Extended Wireless Sensor Networks
Get PDFWireless sensor networks (WSNs) are widely used to monitor remote areas far away from the monitoring center. For large-scale or high-capacity WSNs, when they contain many sensor nodes, a transmission system with low latency and large bandwidth is required. In order to extend the network range, the use of optical communication is one of the alternatives to provide more capacity and a longer range. This study discusses the performance of a range-extended WSN utilizing a hybrid of ZigBee and optic transmission. The performance of the proposed method was evaluated by analyzing the throughput, delay per meter, package loss, and error, which were then compared to a ZigBee-Wifi based system. The experimental results showed that the throughput of the hybrid ZigBee-Fiber Optic (ZigBee FO) system was about 12% greater than that of the ZigBee-Wifi system, and it transmitted the sensor data with a significantly lower delay, reduced by 83%, compared to the ZigBee-Wifi. The package loss and error of ZigBee-FO was 35.7% lower than that of ZigBee-Wifi. Based on these results, the ZigBee-FO WSN has the advantage of significantly improving network performance by reducing the transmission delay, therefore it is beneficial in extending the WSN range
Interaction of Digital Art, Space and Memory: The Case of Alkazar Movie Theater
Get PDFThe pursuit of new art formed by the integration of digital technologies with art is used in many areas of architecture, such as facades, surfaces, showcases, and interiors. The use of art together with the technological infrastructure, especially on interior surfaces, has enabled artists to develop their limits of creativity. In this sense, one dimension of creativity is the designs made through the memory of space. This study focused on how digital artworks produced through the memory of space are applied in the Alkazar Movie Theater in Beyoğlu, Istanbul and their effect on the user. At the point of transferring social memory, Refik Anadol’s work titled Alkazar Dream, renowned for its visualization of memory through digital art, has been effective. The study examined how this interaction was achieved, using a descriptive-analytical and qualitative data analysis method. As a result of the study, the effect of experiencing space and social memory through digital art on the user was revealed. It was found that the interaction of the user with digital art as a viewer and participant is an effective method for the preservation and transfer of social memory into the future
Seismic Design and Risk Analyses of Safe-to-Fail Steel and RC Frames for Nuclear Facilities
Get PDFAbstract
In this article, the design and estimate of the collapse risk of safe-to-fail steel and reinforced concrete (RC) frames due to earthquakes were proposed. The frames are part of nuclear facility buildings, and their failures are to follow the safe-to-fail beam side-sway collapse mechanism. The safe-to-fail was dictated by allowing plastic hinges to form merely in beams and few in columns; no other failure but flexure was tolerated such as shear, local or lateraltorsional buckling. Two types of safe-to-fail frames were studied, one with special moment frame (SMF) and the other with ordinary moment frame (OMF). The design was elaborated, and the fragility-based collapse risks were estimated and compared. Nonlinear time history analyses were carried out to evaluate the structural performance. The analyses showed that the safe-to-fail OMF had lower collapse risk than the safe-to-fail SMF for both steel and concrete frames. The steel safe-to-fail OMF showed superior behaviours.
Keywords: Safe-to-fail; concrete and steel frames; fragility; collapse risk; earthquake; time history analysis.Abstrak
Dalam makalah ini, diusulkan metode perencanaan dan analisis resiko peluang kegagalan struktur gagal-aman dari rangka baja dan beton akibat beban gempa. Struktur rangka tersebut merupakan bagian dari bangunan fasilitas nuklir, dan modus keruntuhannya direncanakan mengikuti mekanisme kegagalan balok secara aman. Mekanisme gagal-aman dicapai dengan mengarahkan terbentuknya sebagian besar sendi plastis di balok dan hanya beberapa di kolom. Hanya jenis kegagalan lentur yang diijinkan terjadi pada balok dan harus dihindari jenis kegagalan selainnya semisal gagal geser, takuk lokal atau tekuk torsi lateral. Pada makalah ini dipelajari dua jenis struktur rangka gagal-aman yaitu struktur rangka pemikul momen khusus (SRPMK) dan struktur rangka pemikul momen biasa (SRPMB). Tatacara perencanaan dijelaskan secara rinci, dan peluang kegagalan berdasarkan kerentanan dihitung dan dibandingkan diantara kedua jenis struktur tersebut. Analisis riwayat waktu taklinier dilakukan untuk mengkaji kinerja stuktural keduanya. Hasil perhitungan menunjukkan bahwa SRPMB gagal-aman menghasilkan peluang kegagalan yang lebih rendah daripada SRPMK gagal-aman. SRPMB rangka baja menunjukkan kinerja yang sangat memuaskan.
Kata-kata Kunci: Gagal-aman, struktur rangka beton dan baja, kerentanan, peluang kegagalan, kegempaan,analisis riwayat waktu
ENHANCED IONIC CONDUCTIVITY OF LAYERED-MNO2 ACCOMPANIED MORPHOLOGY EVOLUTION FOR AQUEOUS ZINC-ION BATTERY
Get PDFEnhancing ionic conductivity is crucial for improving the performance of cathode materials in zinc-ion battery applications. In this study, nanoscale manipulation with nickel intercalation into the layered-MnO2 cathode structure was achieved through a hydrothermal reaction at 160°C for 10 hours. The results of Ni-layered-MnO2 synthesis showed a distinctive peak of layered-MnO2 cathode, as indicated by XRD results, and increased conductivity; its ionic conductivity was analyzed through electrochemical impedance spectroscopy (EIS), enabling rapid diffusion of Zn2+ ions and electron transfer. The distinctive morphology and structure of Ni-doped layered-MnO2 through scanning electron microscope (SEM) contribute to enhanced ionic conductivity and facilitate ion transportation, positioning it as a promising cathode material for aqueous zinc-ion battery applications.Enhancing ionic conductivity is crucial for improving the performance of cathode materials in zinc-ion battery applications. In this study, nanoscale manipulation with nickel intercalation into the layered-MnO2 cathode structure was achieved through a hydrothermal reaction at 160°C for 10 hours. The electrochemical evaluation of Ni-layered-MnO2 involved measurements within an electrolyte of 2 M ZnSO4 and 0.2 M MnSO4. The results of Ni-layered-MnO2 synthesis showed a distinctive peak of layered-MnO2 cathode, as indicated by XRD results, and increased conductivity; its ionic conductivity was analyzed through electrochemical impedance spectroscopy (EIS), enabling rapid diffusion of Zn2+ ions and electron transfer. The distinctive morphology and structure of Ni-doped layered-MnO2 through scanning electron microscope (SEM) contribute to enhanced ionic conductivity and facilitate ion transportation, positioning it as a promising cathode material for aqueous zinc-ion battery applications
ANALYSIS ON THE INFLUENCE OF DUCT CASING GEOMETRY ON THE PERFORMANCE OF A DUCTED FAN
Get PDFThis paper aims to evaluate the influence of an electric ducted fan’s (EDF) geometry on its performance through parameter correlation analysis. Sample data was first built by generating new EDF models with varying duct casing geometries through optimal space-filling (OSF) sampling method. Afterwards, each model was numerically solved with computational fluid dynamics (CFD) analysis to obtain each model’s thrust, required power, and efficiency. It is found that the casing’s inlet lip diameter displays the greatest influence on the EDF’s total thrust, as the inlet diameter determines the casing’s surface area affected by the low-pressure region ahead of the rotating fan blades. Additionally, it is found that length of the casing’s exhaust lip affects the EDF’s efficiency, while the exhaust lip diameter displays the highest correlation with the fan’s required power.This paper aims to evaluate the influence of an electric ducted fan’s (EDF) geometry on its performance through parameter correlation analysis. Sample data was first built by generating new EDF models with varying duct casing geometries through optimal space-filling (OSF) sampling method. Afterwards, each model was simulated with computational fluid dynamics (CFD) to obtain each model’s thrust, required power, and efficiency. It is found that the casing’s inlet lip diameter displays the greatest influence on the EDF’s total thrust, as the inlet diameter determines the casing’s surface area affected by the low-pressure region ahead of the rotating fan blades. Additionally, it is found that length of the casing’s exhaust lip affects the EDF’s efficiency, while the exhaust lip diameter displays the highest correlation with the fan’s required power
On the Role of Early Case Detection and Treatment Failure in Controlling Tuberculosis Transmission: A Mathematical Modeling Study
Get PDFTuberculosis (TB) remains a pressing global health concern, demanding urgent attention to mitigate its spread and impact. In this study, we present a rigorous mathematical model of TB transmission that incorporates early case detection and addresses the critical issue of treatment failure. Through the development of a system of nonlinear ordinary differential equations, we conduct comprehensive analyses to assess the dynamics of TB transmission and the efficacy of intervention strategies. Our findings underscore the urgent need for effective TB control measures. Mathematical analyses reveal that the model exhibits a TB-free equilibrium, which is globally asymptotically stable only if the control reproduction number falls below one. However, we identify a concerning phenomenon: the model demonstrates a forward bifurcation when the control reproduction number equals one, suggesting that the disease-free equilibrium loses its stability, while simultaneously, the stable unique endemic equilibrium begins to emerge. Moreover, sensitivity analysis highlights the complex interplay between case detection rates, treatment failure probabilities, and TB transmission dynamics. Contrary to expectations, increasing case detection rates and minimizing treatment failure probabilities may not consistently reduce the basic reproduction number or the size of the infected population. Instead, there exists a critical threshold for intervention effectiveness, beyond which TB transmission can be significantly curtailed. Biologically, this phenomenon may occur if there is no balance between case detection and treatment efforts. If treatment quality does not improve, then case detection will not have a significant impact, and in the worst case scenario, it can exacerbate the intervention’s negative effects. These findings underscore the urgency of implementing targeted intervention strategies to combat TB transmission effectively. Failure to meet the critical intervention threshold risks undermining TB elimination efforts and exacerbating the global TB burden. Through numerical simulations, we elucidate potential intervention scenarios necessary for achieving TB elimination goals in human populations. In conclusion, our study highlights the urgent imperative for coordinated action to control TB transmission effectively. By elucidating the dynamics of TB spread and intervention efficacy, we provide valuable insights to inform evidence-based policy decisions and accelerate progress towards TB elimination on a global scale
Rancang Bangun Particle Counter untuk Monitoring Konsentrasi PM1, PM2.5 dan PM10 di Udara Berbasis IoT
Get PDFPoor air quality is a serious health and environmental issue. Microscopic particles such as PM1, PM2.5, and PM10 cause respiratory disorders and other health problems. Therefore, accurate and continuous air quality monitoring is crucial to mitigate the impacts of air pollution. This research aims to design an Internet of Things (IoT)--based particle counter capable of real-time air quality monitoring and reporting via an online platform. The system utilizes a PMS5003 sensor to measure PM1, PM2.5, and PM10 concentrations precisely. Data from the sensor is processed by an ESP8266 microcontroller connected to the internet, enabling direct data transmission to an online platform for further analysis and visualization. Testing is done by creating a 1x1x1 meter testing chamber to simulate various environmental conditions and validate the device's performance. Results show that the particle counter provides accurate data, with an error rate of less than 10% compared to standard devices. The device demonstrates reliable operation across different environmental conditions, showcasing its robustness in practical applications. This IoT-based particle counter offers an innovative solution for effective and efficient air quality monitoring. It is expected to significantly contribute to human health protection efforts and minimize the adverse environmental impacts of air pollution.Kualitas udara yang buruk merupakan masalah serius bagi kesehatan dan lingkungan. Partikel mikroskopis seperti PM1, PM2.5, dan PM10 diketahui menyebabkan gangguan pernapasan dan masalah kesehatan lainnya. Karena itu, pemantauan kualitas udara yang akurat sangat penting untuk mengurangi dampak polusi udara. Penelitian ini bertujuan merancang bangun particle counter berbasis Internet of Things (IoT) untuk memantau kualitas udara secara real-time dan melaporkannya melalui platform online. Sistem ini menggunakan sensor PMS5003 untuk mengukur konsentrasi PM1, PM2.5, dan PM10 dengan presisi tinggi. Data dari sensor ini diolah oleh mikrokontroler ESP8266 yang terhubung ke internet, memungkinkan pengiriman data langsung ke platform online untuk analisis dan visualisasi data lebih lanjut. Pengujian dilakukan dengan membuat chamber pengujian ukuran 1x1x1 meter yang dapat disimulasikan berbagai kondisi lingkungan untuk memvalidasi kinerja alat. Hasil penelitian menunjukkan bahwa sistem particle counter ini memberikan data yang akurat, dengan nilai error kurang dari 10% dibandingkan dengan alat standar. Alat ini juga dapat beroperasi dengan andal dalam berbagai kondisi lingkungan, menunjukkan kehandalan dan ketangguhan dalam aplikasi praktis. Secara keseluruhan, sistem particle counter berbasis IoT ini memberikan solusi inovatif untuk pemantauan kualitas udara yang lebih efektif dan efisien. Ini diharapkan dapat memberikan kontribusi signifikan dalam upaya melindungi kesehatan manusia dan meminimalkan dampak negatif polusi udara terhadap lingkungan
Perancangan Purwarupa Pengukur Kadar Air dan Kualitas Pangan Komoditas Beras dan Jagung Menggunakan Sensor Kapasitif
Get PDFWater content is an indicator that can affect food quality and safety as well as commodity prices. Therefore, measuring the moisture content of commodities is important to ensure the food system viability. The development of increasingly sophisticated technology has led many companies to introduce water content measuring instruments called Moisture Content Meters (MCM). However, this tool is marketed at an expensive price. In this research, a prototype for measuring the moisture content and food quality of rice and corn commodities using a cheap capacitive sensor has been successfully made according to the design. Based on the testing results, this prototype has an accuracy value of 98,9%, precision of 97,4%, and error of 1,1%. The test results show that this prototype is accurate enough to measure the moisture contents of rice and corn samples, accompanied by consistent food quality indications according to applicable quality standards. Kadar air merupakan indikator yang dapat berpengaruh terhadap kualitas dan keamanan pangan serta harga komoditas. Oleh karena itu, pengukuran kadar air komoditas merupakan hal penting untuk memastikan keberlanjutan sistem pangan. Perkembangan teknologi yang semakin canggih membuat banyak perusahaan menghadirkan alat ukur kadar air yang disebut dengan Meter Kadar Air (MKA). Namun, alat tersebut dipasarkan dengan harga mahal. Pada penelitian ini, purwarupa pengukur kadar air dan kualitas pangan komoditas beras dan jagung menggunakan sensor kapasitif yang murah telah berhasil dibuat sesuai dengan desain. Berdasarkan hasil pengujian yang telah dilakukan, purwarupa ini memiliki nilai akurasi sebesar 98,9%, presisi sebesar 97,4%, dan kesalahan sebesar 1,1%. Hasil pengujian tersebut menunjukkan bahwa purwarupa ini cukup akurat untuk melakukan pengukuran kadar air sampel beras dan jagung yang disertai dengan penunjukan kualitas pangan yang konsisten sesuai dengan standar mutu yang berlaku