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No full textCouples travelers grow exponentially and tend to visit more exotic destinations. Yet, the existing literature has largely concentrated its investigation on the context of Western destinations. A better understanding of couples travelers' hotel satisfaction in the Southeast Asia context would help scholars to understand a holistic picture of couples travelers’ hotel satisfaction and assist hoteliers to prepare their hotels to welcome and serve such guests. This study extends the existing hospitality literature by investigating and identifying the attributes of couples travelers’ hotel satisfaction in Thailand. A total of 695 couples-travelers feedback on the TripAdvisor website were reviewed and content analyzed. Our study indicates that couples travelers’ hotel satisfaction is determined by 10 common themes and two new emerging themes. Among these themes, staff attitude was found as the most important attribute while privacy was noted as the least important attribute to generating couples-travelers’ hotel satisfaction.Not applicabl
Performance of Moving Bed Biofilm Reactor Integrated Septic Tank in Treating Office Building Wastewater
Get PDFThis research aimed to find the effect of initial concentration and hydraulic retention time (HRT) on modified septic tank (MST) performance in treating wastewater from an office building. The synthetic wastewater used had an average COD:TN:TP ratio of 84:28:1, adjusted to office building wastewater characteristics. The experiment was executed under steady conditions using three variations of HRT (12, 24, and 36 hours) and different initial concentrations of COD (106, 252 and 432 mg COD/L), TN (35, 85 and 146 mg N/L) and TP (1.26, 3 and 5.14 mg P/L). The result showed that the MST removed 82% to 92% of COD, 41% to 60% of TN, 45% to 61% of NH4, and 39% to 55% of TP. The maximum removal was achieved at 36 h of HRT, COD:TN (3:1), and COD:TP (84:1). One-way ANOVA showed that the initial concentration and HRT had significant effects on the performance of MST (p < 0.05). This suggests that appropriate control of the initial concentration and HRT in the MST can effectively remove organics and nutrients from office building wastewater
Effect of Shot Peening Parameters on PLA Parts Manufactured with Fused Deposition Modeling
Get PDFFused deposition modeling (FDM) is a technology with potential benefits such as material versatility, user-friendliness, and cost-effectiveness. However, the mechanical properties of FDM-printed specimens are relatively low. To address this issue, post-processing techniques such as shot peening can be employed. Shot peening is utilized as a post-treatment for metal-based and ABS materials, but its application to PLA material has not been explored yet. This study aimed to evaluate the effect of shot peening on the mechanical properties of FDM-printed PLA samples. A full factorial experimental design was employed with shot peening speed, duration, and number of outer shells as parameters. The tensile strength of 72 samples after the shot peening process was measured and evaluated. Analysis of variance (ANOVA) revealed that all parameters had a significant influence on tensile strength. Additionally, the interaction of speed*time and speed*number of shells also had a significant influence. Meanwhile, the interaction of time*number of shells and speed*time*number of shells had no significant influence. The findings of this study demonstrate the potential of post-processing techniques to enhance the mechanical strength of FDM components, particularly those composed of PLA material
Does E-Government and Control of Corruption Affect Government Effectiveness and Economic Growth in Lower-Middle-Income Countries in Asia?
Get PDFThis study examines the impact of e-government and corruption control on government effectiveness and economic growth in lower-middle-income countries in Asia. This study uses SMART PLS to test construct validity, reliability, and discriminant validity to assess data quality. Data is obtained from Worldbank and UN e-government surveys. The results of the study show that e-government has a positive and significant effect on government effectiveness, with a P-value of 0.000 and a T-statistic of 3,664. Control of corruption affects government effectiveness with a P-value of 0.001 and a T-statistic of 3.209; then, government effectiveness has a positive and significant effect on economic growth with a P-value of 0.000 and a T-statistic of 4.026. The findings highlight the importance of adopting efficient e-government practices and effective corruption control measures to improve government performance and promote sustainable economic growth in these countries.Studi ini mengkaji dampak E-Government dan Pengendalian Korupsi terhadap Efektivitas Pemerintah dan Pertumbuhan Ekonomi di Negara Berpenghasilan Menengah Bawah di Asia. Penelitian ini menggunakan SMART PLS untuk menguji validitas konstruk, reliabilitas, dan validitas diskriminan untuk menilai kualitas data. Data diperoleh dari Worldbank dan UN E-government survei. Hasil penelitian menunjukkan bahwa E-Government berpengaruh positif dan signifikan terhadap Government Effectiveness dengan P-value 0,000 dan T-statistic 3.664. Control of corruption mempengaruhi governmenr effectiveness dengan P-value 0.001 dan T-statistic 3.209 selanjutnya Government Effectiveness berpengaruh positif dan signifikan terhadap Pertumbuhan Ekonomi dengan P-value 0.000 dan T-statistic 4.026. Temuan menyoroti pentingnya mengadopsi praktik E-Government yang efisien dan langkah-langkah pengendalian korupsi yang efektif untuk meningkatkan kinerja pemerintah dan mendorong pertumbuhan ekonomi yang berkelanjutan di negara-negara tersebut
NILAI INDIKATOR KEBERLANJUTAN REMANUFAKTUR DAN FAKTOR-FAKTOR YANG MEMENGARUHI UMKM FESYEN MENERAPKAN EKONOMI SIRKULAR1)
No full textFashion business is increasing concern on the circular economy implementation. This leads micro, small, and medium enterprises (MSMEs) to reflect on the economy, environmental, and social aspects that affect such implementation. This study aims to determine the implementation of circular economy principles in the fashion MSMEs located in Bandung City. Specifically, three objectives were investigated, i.e., identifying the categories of fashion MSMEs that adopt circular economy principles, estimating the remanufacturing sustainability indicator (RSI) value for fashion MSMEs that apply circular economy principles, and analyzing the factors that influence fashion MSMEs in applying circular economy principles. This study employed structural surveys of fashion MSMEs in Bandung City. The data were analyzed using descriptive analysis, remanufacturing sustainability indicator (RSI), and logistic regression. The results show that all types of MSMEs, based on their products, and based on PERMEN 11/Per/M.KUKM/XII/2015, have implemented circular economy principles. The RSIvalues range from 0.045 to 486,050,181 with an average of 48,605,102.81, indicating that the economic, social, and environmental remanufacturing indicators for fashion MSMEs exceed the national average. The influence factor for fashion MSMEs to implement circular economy principles only includes revenue variables. The output of this research provides a foundation for escalating government targets concerning the circular economy by 2030 and what needs to be prioritized, the level of sustainability remanufacturing in fashion MSMEs, the importance of the role of stakeholders in the initiation of a circular economy, and the implications of sustainability implementation regarding fashion MSME waste.Isu lingkungan global saat ini semakin mengukuhkan urgensi penerapan ekonomi sirkular. Hal ini mendorong Usaha Mikro, Kecil, dan Menengah (UMKM) untuk merenungkan aspek ekonomi, lingkungan, dan sosial yang memengaruhi implementasi tersebut. Penelitian ini bertujuan untuk menentukan penerapan prinsip ekonomi sirkular pada UMKM fesyen yang berlokasi di Kota Bandung. Secara khusus, tiga tujuan diteliti, yaitu mengidentifikasi kategori UMKM fesyen yang mengadopsi prinsip ekonomi sirkular, memperkirakan nilai Indikator Keberlanjutan Remanufaktur (RSI) bagi UMKM fesyen yang menerapkan prinsip ekonomi sirkular, dan menganalisis faktor-faktor yang memengaruhi UMKM fesyen dalam menerapkan prinsip ekonomi sirkular. Penelitian ini menggunakan survei struktural terhadap UMKM fesyen di Kota Bandung. Data dianalisis dengan menggunakan analisis deskriptif, Indikator Keberlanjutan Remanufaktur (RSI), dan regresi logistik. Hasil penelitian menunjukkan bahwa semua jenis UMKM berdasarkan produk mereka, dan berdasarkan PERMEN 11/Per/M.KUKM/XII/2015, telah menerapkan prinsip ekonomi sirkular. Nilai-nilai RSI berkisar antara 0,045 hingga 486.050.181 dengan rata-rata 48.605.102,81, menunjukkan bahwa indikator-indikator remanufaktur ekonomi, sosial, dan lingkungan untuk UMKM fesyen melebihi rata-rata nasional. Faktor yang memengaruhi UMKM Fesyen dalam menerapkan prinsip ekonomi sirkular hanya meliputi variabel pendapatan
Microplastic Removal from Road Stormwater Runoff using Lab-scale Bioretention Cell
Get PDFMicroplastic removal from stormwater runoff from roads is necessary to reduce the effect of microplastic pollution in water bodies. Bioretention is a potential technology to remove microplastics in stormwater runoff from roads. A lab-scale experiment was conducted to determine the efficiency, effect on vegetation and discharge variation, and the kinetics of microplastic removal from stormwater runoff from roads using a bioretention cell. The experiment was done using an artificial sample based on visual characterization of stormwater runoff from highways, commercial, and residential roads. The vegetations that were examined were Vetivera sp. and Hibiscus sp. The operational discharge was varied based on rainfall intensity categories. The result showed that the removal efficiency was in the range of 92.4 to 99.3% with a mean of 97.2%. Statistical analysis (α = 5%) showed that variation in vegetation and discharge had no significant effect on microplastic removal using bioretention. The first-order kinetic analysis showed that the kinetic removal constant of the bioretention with Vetivera sp., bioretention with Hibiscus sp., and bioretention without vegetation was 0.0356, 0.034, and 0.0327, respectively. These results indicate that bioretention with Hibiscus sp. removed more microplastics at greater depths than with Vetivera sp
A Consensus Model for Coastal Potential- Conflict Management: The Case of Pangkung Tibah Village, Bali
Get PDFThe tourism development of the Pangkung Tibah Village coastal area has reportedly caused various changes in the functions of lands. These changes have led to potential conflicts among the involved actors, who have different interests, indicating the necessity for problem-solving efforts. Potential conflicts should be addressed early to prevent them from developing into bigger conflicts. The results of this study may be used as a guideline for developing policies to prevent potential conflicts. The study aimed to: (1) identify the characteristics of the potential conflicts in the Pangkung Tibah Village coastal area, (2) carry out an analytical mapping of the potential conflicts, and (3) formulate a consensus model for the management of the potential conflicts by maximizing the role of the local community. The participatory rural appraisal (PRA) approach was used to identify and conduct an analytical mapping of potential conflicts in the Pangkung Tibah Village coastal area. The findings revealed that due to the vulnerability of this coastal area to damages, interventions should be controlled by direct action that is supported by formal and customary laws. Regarding the identification of the actors, causes, and types of differences in this study, an analytical mapping was conducted, with the potential conflicts being categorized into three levels: ‘mild’, ‘moderate’, and ‘severe’. These levels were determined based on the nature of their relationships with the three categories of sustainable development. In conclusion, a consensus model is proposed as a solution to manage the existing potential conflicts in the coastal area of Pangkung Tibah Village based on the local community and stakeholders’ participation in order to well manage the social, economic, and environmental aspects towards sustainable development
Identifikasi Karakteristik Teknik Subgrade Jalan : (Studi Kasus Jalan Raya Tanak Awu-Pengembur, Lombok Tengah)
Get PDFAbstract
The purpose of this research is to describe the results of the identification of the technical characteristics of the Tanak Awu-Pengembur Road subgrade, including mineralogy, physical characteristics, mechanical characteristics, and hydromechanical characteristics, based on the results of experimental tests in the laboratory so that they can be input for related institutions. The results of mineralogical identification using the XRD method showed that the soil samples contained the minerals saponite, beidellite, and montmorillonite, which included in the expansive smectite-type clay mineral group. The results of physical characteristics identification stated that the soil sample had a plasticity index (PI) of 44.34%, a liquid limit (LL) of 72.21% according to the ASTM D-1883 method, Chen (1988), Raman (1967), Ladid and Lambe (1961) which categorized as soil with a very high degree of swelling. The results of mechanical and hydromechanical characteristics identification stated that the swelling value of the sample soil was 5.539% (CBR test results) was classified as expansive soils. The results of mechanical identification stated that the design value of the California Bearing Ratio (CBR) soaked soil sample was 2%. The design value of CBR soaked has met the minimum requirements as a road subgrade. However, for expansive soil subgrades, the CBR value needs to be increased to greater than 6% with subgrade improvement use cement or selected backfill material with a minimum thickness of 600 mm (MDP 2017). Based on SWCC, the clay soil sample has an AEV value of 600 kPa while the residual suction (Sr) value not be identified.
Keywords : Expansive clay, CBR, swelling-shrinkage, matric suction, AEVAbstrak
Jalan yang menghubungkan Desa Tanak Awu menuju Desa Pengembur yang berada di Kecamatan Pujut, Lombok Tengah, sering rusak, retak-retak dan bergelombang. Tujuan penelitian ini adalah memaparkan hasil identifikasi karakteristik teknik subgrade Jalan Tanak Awu-Pengembur, meliputi mineralogi, karakteristik fisik, karakteristik mekanik dan karakteristik hidromekanik berdasarkan hasil uji eksperimen di laboratorium agar dapat menjadi masukan bagi institusi terkait. Hasil identifikasi mineralogi dengan metode XRD, sampel tanah mengandung mineral saponite, beidellite dan montmorillonite termasuk dalam kelompok mineral lempung jenis smectite bersifat ekspansif. Hasil Identifikasi karakteristik fisik menyatakan sampel tanah mempunyai indeks plastisitas (PI) sebesar 44,34%, batas cair (LL) sebesar 72,21 % menurut metode ASTM D-1883, Chen (1988), Raman (1967) Ladid dan Lambe (1961) dikategorikan tanah dengan derajat pengembangan sangat tinggi. Hasil Identifikasi karakteristik mekanik dan hidromekanik menyatakan nilai pengembangan tanah sampel 5,539 % (hasil uji CBR) digolongkan sebagai tanah ekspansif. Nilai CBR rendaman desain tanah sampel sebesar 2 % telah memenuhi persyaratan minimum sebagai subgrade jalan, namun untuk subgrade tanah ekspansif, nilai CBR perlu ditingkatkan menjadi lebih besar dari 6 % dengan perbaikan tanah dasar dapat berupa stabilisasi semen atau material timbunan pilihan dengan tebal minimum 600 mm (MDP 2017). Berdasarkan SWCC, sampel tanah lempung memiliki nilai AEV sebesar 600 kPa tetapi nilai residual suction (Sr) tidak dapat diidentifikasi.
Kata-kata Kunci : Lempung ekspansif, CBR, kembang susut, matric suction, AE
Dynamical Behaviour of Pro- and Anti-Inflammatory Cytokines during Pathogenesis of Atherosclerosis
Get PDFThe role of anti-cytokines in atherosclerosis is to reduce inflammation in the intima. In some situations, certain anti-inflammatory cytokines like TGF-beta and IL-6 have shown the characteristics like a pro-inflammatory cytokines, which are showing different natures. In this study, a dynamical atherosclerosis model is proposed in the form of reaction-diffusion equation with consideration of immune cells, pro-inflammatory cytokines, and anti-inflammatory cytokines. The existence and uniqueness of the solutions are discussed for the proposed reaction dynamical system. The three equilibrium points, non-inflammatory, chronic, and coexistence, and their local stability are also determined for the model. Bellman and Cooke’s theorem is applied to illustrate the global stability at the coexistence equilibrium point. The effects of pro- and anti-inflammatory cytokines have also been discussed. The analytical and numerical studies evidently indicate that inflammation behaves differently when a certain number of anti-inflammatory cytokines behave like pro-inflammatory cytokines. The numerical simulations are demonstrated for different impacts of the reduction rate of macrophages due to the presence of anti-inflammatory cytokines, inhibition time, and the portion of anti-inflammatory cytokines behaving like pro-inflammatory cytokines through graphically. The results of this study suggest that chronic inflammation of the disease is likely to persist when a high concentration of ox-LDL and moderate concentration of cytokines are present in the intima. Coexistence inflammation is characterized by a high concentration of ox-LDL, moderate concentration of pro-inflammatory and high concentration of anti-cytokines; whereas a non-inflammatory condition would persevere if a low concentration of ox-LDL has been present in the intima
APP-ASSISTED BOARDGAME AS AN EDUCATIONAL MEDIUM FOR ELEMENTARY SCHOOL’S CHILDREN'S COLLABORATIVE SKILL’S
Get PDFBoardgame is one form of game that is presently popular. The development of board games is also interesting from board games which were originally just paper and boards, now they are starting to penetrate the digital world. Starting from board games that are present digitally, implementing a hybrid concept between physical and digital, to those that use the latest technology. The addition of digital tools or applications to board games seeks to enhance the playing experience by making games more exciting, fascinating and interactive. With the presence of digital media in a board game, digital media interventions such as the use of audio, video, or even interactive displays are conceivable. In addition to serving as a form of diversion, board games can also serve as an educational tool. With board games as an educational medium, tedious learning can become more enjoyable. Boardgames as learning media are not new; there are already quite a few boardgame titles that contain science and soft skills-related learning content. Students must possess four competencies in the 21st century: critical thinking and problem solving, creativity, communication skills, and problem-solving skills through collaboration. During the pandemic, many online students encountered difficulties collaborating with their classmates. There is a need for learning materials that facilitate student collaboration, and board games are one such medium. Collaboration is nothing new in the realm of collaborative education; it has become an integral part of the existing educational structure. Collaboration is an integral element of the current education system in Indonesia, which emphasises character education, and is even included in the Pancasila student profile. Based on this phenomenon and aided by a review of the relevant literature, research was conducted to determine how board games with digital media are utilised as collaborative learning media for children. It is necessary to dissect the design and concept of a board game to determine how they affect the player's experience. Based on this experience, additional research was conducted to determine what children can learn from board games with digital applications.Boardgames merupakan salah satu bentuk permainan yang sedang populer saat ini. Perkembangan boargames juga menarik dari board games yang awalnya hanya berupa kertas dan papan, kini mulai merambah dunia digital. Mulai dari boardgames yang hadir secara digital, penerapan konsep hybrid antara fisik dan digital, sampai yang menggunakan teknoligi terbaru. Penambahan alat atau aplikasi digital padaboardgame bertujuan untuk meningkatkan pengalaman bermain dengan membuat permainan menjadi lebih seru, menarik, dan interaktif. Dengan adanya media digital dalam sebuah boardgames, memungkinkan terjadinya intervensi dari media digital dalam permainan tersebut, seperti penggunaan audio, video atau bahkan tampilan yang interaktif. Selain sebagai media bermain, boardgamse juga dapat berfungsi sebagai sarana edukasi. Dengan boardgames sebagai media edukasi, pembelajaran yang membosankan bisa menjadi lebih menyenangkan. Boardgames sebagai media pembelajaran bukanlah hal baru, sudah cukup banyak judul boardgame yang memuat konten pembelajaran terkait sains dan soft skill. Empat kompetensi yang harus dimiliki siswa pada abad 21: berpikir kritis dan pemecahan masalah, kreativitas, keterampilan komunikasi, dan keterampilan pemecahan masalah melalui kolaborasi. Selama pandemi, pada era pembelajaran daring, banyak siswa mengalami kesulitan dalam berkolaborasi dengan teman sekelasnya. Diperlukan adanya materi pembelajaran yang memfasilitasi kolaborasi siswa, dan boardgames adalah salah satu medianya. Kolaborasi bukanlah hal baru dalam dunia pendidikan dan telah menjadi bagian integral dari struktur pendidikan yang ada. Kolaborasi menjadi bagian integral dalam sistem pendidikan di Indonesia saat ini, yang mengedepankan pendidikan karakter, bahkan masuk dalam profil pelajar Pancasila. Berdasarkan fenomena tersebut dan dibantu dengan tinjauan literatur yang relevan, maka dilakukan penelitian untuk mengetahui bagaimana boardgames dengan media digital dimanfaatkan sebagai media pembelajaran kolaboratif pada anak. Desain dan konsep dari boardgames perlu dibedah untuk menentukan pengaruhnya terhadap pengalaman pemain. Berdasarkan pengalaman tersebut, penelitian tambahan dilakukan untuk mengetahui apa saja yang dapat dipelajari anak-anak dari app-assisted boardgames