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No full textThis study aims to determine the effect of environmental beliefs on the intention to visit ecological site through ecotourism attitude. The location of this research was conducted in Ciletuh-Palabuhanratu UGGp. In this study, the exogenous variable used were environmental beliefs with ecotourism attitude as the mediating variable and intention to visit ecotourism as the endogenous variable. The type of this research uses descriptive and verification with explanatory research methods. The sampling technique used was purposive sampling, amounting to 460 respondents. The data analysis technique in this study used Structural Equating Modeling (SEM). The results of this study indicate that the description of environmental belief, ecotourism attitude, and intention to visit ecotourism are in a fairly good category. The findings in this study suggest that environmental belief variables indirectly influence the intention to visit visit ecological through ecotourism attitude. The research recommend both of tourists and Ciletuh-Palabuhanratu UGGp to increase environmental belief and ecotourism attitudes in order to create positive tourist visiting intentions.Penelitian ini bertujuan untuk mengetahui pengaruh environmental belief terhadap niat berkunjung ke ekowisata melalui ecotourism attitude. Lokasi penelitian ini dilakukan di Ciletuh-Palabuhanratu UGG. Pada penelitian ini, variabel eksogen yang digunakan adalah environmental belief dengan ecotourism attitude sebagai variabel mediasi dan niat berkunjung ke ekowisata sebagai variabel endogen. Jenis penelitian ini adalah deskriptif dan verifikatif dengan metode explanatory research. Teknik sampling yang digunakan adalah purposive sampling yang berjumlah 460 responden. Teknik analisis data pada penelitian ini menggunakan Structural Equation Modeling (SEM). Hasil penelitian ini menunjukkan bahwa gambaran environmental belief, ecotourism attitude, dan niat berkunjung ke ekowisata berada pada katergori cukup baik. Temuan pada penelitian ini mengemukakan bahwa variabel environmental belief secara tidak langsung memengaruhi niat berkunjung ke ekowisata melalui ecotourism attitude. Sehingga peneliti merekeomendasikan baik untuk wisatawan dan pihak Ciletuh-Palabuhanratu UGGp untuk meningkatkan environmental belief dan ecotourism attitude agar menciptkan niat berkunjung wisatawan yang positif
Factors Affecting Illegal Land-use Changes in Residential Areas: (Case Study: District 6 of Tehran)
Get PDFToday, understanding the trend of land-use changes and its contributing factors is one of the important issues in urban land-use planning and urban management policies. Not all land-use changes comply with urban development plan regulations. Illegal land-use changes, especially in residential areas, are often implemented to reduce the municipality tax for small businesses in large cities in Iran. This trend has become a source of income for municipalities through fine acquisition. The objective of this study was to identify the factors contributing to incompatible and illegal land-use changes in the case study of District 6 in Tehran. The research method used in this study was descriptive-analytical. The data was collected using a questionnaire and a field study. The data were analyzed using the Pearson correlation test and confirmatory factor analysis using the equation modeling technique in the LISREL software. According to the research findings, escape from the traffic scheme zone, with a coefficient load factor of 0.86, and economic profitability, with a coefficient load factor of 0.84, were the most important factors motivating illegal land-use changes in the residential areas in this case study (District 6, Tehran). The main conclusion of this research is the need for change in Tehran urban policies for mitigation of urban planning violations. Specially in this case, the impact of the traffic scheme zone in Tehran should be considered. Another suggestion is the adoption of new urban policies related to taxes on unauthorized activities in residential areas that can counteract the market response to possible changes
Photocatalytic Simulation of Phenol Waste Degradation Using Titanium Dioxide (TiO2) P25-Based Photocatalysts
Get PDFPhenol waste treatment is vital in industries such as polymer production, coal gasification, refinery, and coke production. Photocatalytic technology using semiconductor materials offers an effective and ecofriendly approach to degrade phenol. TiO2 P25 is a widely used photocatalyst, known for its cost-effectiveness, favorable optical and electronic properties, high photoactivity, and photostability. The PHOTOREAC application, a recently developed MATLAB-based software, simulates the degradation of phenol using visible light. A study that combines existing literature and research revealed that pH significantly influences photocatalytic activity, with an optimum pH of 7 for TiO2 P25-mediated phenol degradation. The recommended photocatalyst concentration ranged from 0 to 10 g/L for reactor volumes between 25 and 60 mL, and from 0 to 5 g/L for 100-mL reactors. Phenol wastewater volume and light intensity also impact degradation efficiency. Adequate oxygen supply, achieved through bubbling and mixing, is essential for the formation of radical compounds. The Ballari kinetic model proved to be the most suitable for phenol degradation with TiO2 P25. Thus, by combining PHOTOREAC simulations with experimental data, the treatment process could be optimized to achieve higher degradation efficiency and estimate the treatment time for specific waste degradation levels. This study contributes to the advancement of phenol waste treatment and the development of improved photocatalytic wastewater treatment technologies
An Analysis of Leg Length and Vo2Max of Junior Athletes in Basketball and Volleyball: Analisis Panjang Tungkai dan Vo2Max pada Atlet Junior Cabang Olahraga Bola Basket dan Bola Voli
No full textIncreased sports achievements are inseparable from the role of the scientific approach. A person's body structure is determined by bones and muscles. High-bodied people automatically have a long bone structure and vice versa. Factors related to body structure, body posture, and genetic ability to move in particular are one of the determinants of success in achieving achievement. A good level of physical fitness is very helpful for athletes in maintaining their achievements, especially in taking physical tests. Athletes will be able to do optimal physical tests if they have excellent physical fitness. One that describes a person's physical fitness level is VO2Max. The length of the limbs or one part of the body posture can also affect the level of VO2max. This type of research is a quantitative research using data analysis techniques using correlation analysis techniques and coefficient analysis of determination with the method used, namely descriptive. The number of samples in this study was 69 people. Consists of 41 basketball junior athletes and 28 volleyball junior athletes. Based on the results of the data analysis shows the magnitude of the correlation coefficient between the length of the leg and the VO2Max is (r = 0.28409). This it can be said that there is a strong correlation between the length of the leg and the VO2Max. From the results above, it can be determined that the limit of the leg length to the VO2Max is 8%.
Keywords: VO2max, bone structure, stiffnessMeningkatnya prestasi olahraga tidak terlepas dari peranan pendekatan secara ilmiah. Struktur tubuh seseorang ditentukan oleh tulang dan otot. Orang yang bertubuh tinggi otomatis memiliki struktur tulang yang panjang demikian sebaliknya. Faktor yang berkaitan dengan struktur tubuh, postur tubuh, dan kemampuan gerak dirangkaikan secara genetik pada khususnya merupakan salah satu penentu keberhasilan dalam mencapai prestasi. Tingkat kebugaran jasmani yang baik sangat membantu atlet dalam mempertahankan prestasinya, terutama dalam mengikuti tes fisik. Atlet akan mampu melakukan tes fisik secara optimal apabila memiliki kebugaran jasmani yang prima. Salah satu yang menggambarkan tingkat kebugaran jasmani seseorang adalah VO2Maks. Panjang Tungkai atau salah satu bagian dari postur tubuh yang juga dapat mempengaruhi tingkat VO2maks. Jenis penelitian ini adalah penelitian kuantitatif dengan menggunakan teknik analisis data menggunakan teknik analisis korelasi dan analisis koefisien determinasi dengan metode yang digunakan yaitu deskriptif. Jumlah sampel pada penelitian ini yaitu 69 orang. Terdiri dari 41 atlet junior bola basket dan 28 atlet junior bola voli. Berdasarkan hasil analisis data menunjukkan besar koefisien korelasi antara Panjang tungkai dengan VO2Maks adalah sebesar (r =0,28409). Dengan demikian dapat dikatakan terdapat korelasi yang kuat antara panjang tungkai dengan VO2Maks. Dari hasil diatas dapat ditentukan besar kontribusi panjang tungkai terhadap VO2Maks sebesar 8%
Structure Simulation on Portable Commuter Bike Considering Frame Design and Materials Alternatives
Get PDFPortable commuter bikes (PCBs) are needed by commuters, people who live in the suburbs of a city and whose activities are in the middle of the city or vice versa, even for longer distances. For user safety, it is mandatory to check the strength aspect of the bicycle frame structure. PCBs are not only ridden by the commuter but can also be folded to bring them along on public transportation. The PCB design also included a stool to be used by the commuter while waiting for the bus or train. The strength of the PCB structure was investigated using numerical simulations based on static load. The displacements and stresses were controlled using a variety of PCB frame designs and materials. The results of this bicycle structural inspection can guide the improvement of PCB designs in the future
Penerapan Direct Interaction Terhadap Peningkatan Hasil Belajar Jurus Tunggal Baku Tangan Kosong dalam Pembelajaran Pencak Silat
Get PDFThe model's ability to optimize student learning, particularly in pencak silat programs, is strongly tied to students' physical education achievement. This study will examine how mastering the bare-handed standard single move affects direct interaction learning model utilization. This study examines direct contact learning model use. A single group was tested pre- and post-testing. This study included elementary school children from Bandung's Soreang District. We randomly selected 80 students as our representative sample in this investigation. According to the results, the direct instruction style improves students' performance on the preliminary and final exams for the bare-handed single stance in pencak silat (4.13>1.73).
Keywords: pencak silat, direct instruction model, kujang kencana, bandung regencyTujuan yang hendak dicapai dalam penelitian ini adalah ingin mengetahui tingkat pengetahuan siswa tentang hasil jurus tunggal baku tangan kosong pencak silat di Ektrakulikuler Pusaka Kujang Kencana yang berada di Kab, Bandung. Metode Penelitian in adalah Metode eksperimen Metode Experimen merupakan kegiatan mengadakan percobaan terhadap varaibel - variabel yang diselidiki, untuk mendapatkan suatu hasil dari suatu sebab akibat dalam kondisi tertentu. Populasi yang penulis ambil dalam penelitian ini adalah seluruh peserta perguruan kujang kencana kabupaten bandung. Sedangkan sampel yang diambil dalam penelitian ini adalah peserta yang aktif perguruan kujang kencana kabupaten bandung yang berjumlah 10 orang. Instrumen yang digunakan adalah berupa Tes yang digunakan dalam penelitian ini adalah Tes Observer Aspek Afektif Pencak Silat. Hasil penelitian yang sudah dilakukan ditemukan bahwa hasil tes awal dan tes akhir peningkatan hasil jurus tunggal baku tangan kosong dalam pembelajaran pencak silat memiliki pengaruh yang lebih besar dan signifikan dengan t hitung lebih besar dari pada t tabel (4,13>1,73) yang berarti bahwa penerapan model direct instruction memiliki pengaruh yang signifikan terhadap peningkatan hasil jurus tunggal baku tangan kosong dalam pembelajaran pencak silat
Applying Fluorescence Dissolved Organic Matter Spectra and Phytoplankton Biology Index for Assessing Urban River Quality
Get PDFThe relationship between phytoplankton dynamics and dissolved organic matter (DOM) in aquatic systems based on fluorophore organic matter properties results in poor implementation of methods for water quality monitoring. This study aimed to investigate the relation between fluorophore organic matter and phytoplankton index and to estimate the phytoplankton index by fluorescent organic components for water quality assessment. The research was conducted by sampling urban river water, followed by measuring the biological phytoplankton index and dissolved organic matter during the wet and dry seasons. Fluorescence Excitation Emission Matrices (FEEMs) analysis combined with Parallel Factor (PARAFAC) analysis identified three main components of the fluorescence organic matter, i.e., a fulvic acid-like component (C1) and humic acid-like components (C2 and C3), in the aquatic system, whether in the dry season or the wet season. C1 was mainly generated by phytoplankton species, i.e., Nitzschia sp., Plectonema sp., Navicula sp., and Pinnularia sp., and C2 and C3 had a less significant relationship with phytoplankton species. The diversity of Bacillariophyta had a stronger contribution to the release of DOM than the diversity of Cyanobacteria. The abundance index of a particular phytoplankton species can be used to determine the organic components of FEEM-derived fluorescence organic matter
3D Modeling of Leachate Distribution Around Zone E of Batu Layang Landfill, Pontianak, West Kalimantan, Indonesia Using the Geoelectrical Method
Get PDFOpen dumping systems as implemented by the Batu Layang landfill in Pontianak City, Indonesia can cause leachate pollution in the environment. The constituent soil condition affects the leachate distribution into the ground. One of the landfill constituents of the soil at the site of the Batu Layang landfill is peat soil, in which organic content (>75%), porosity, and permeability are high. Leachate that seeps below the earth’s surface can cause soil and groundwater contamination. Meanwhile, people around landfills use groundwater for their daily needs and use the land around the landfill to grow papaya, banana, sugarcane, and taro. Therefore it is necessary to prevent and minimize leachate spread. One of the efforts that can be done is to model the leachate distribution. In this study, leachate distribution modeling was done with a geoelectric method, the Wenner configuration, with a smallest electrode distance of 5 m. There were six tracks, with a length of 195 m each. The model obtained from this study was a 3D resistivity section. 3D data processing was done using the inverse distance method. The results showed that a resistivity value ≤10 Ωm identified the soil layer contaminated with leachate. The contaminated soil layers were estimated to be peat, clay, and loamy sand. The leachate distribution is suspected of seeping up to 195 m south of the landfill. The leachate distribution into the soil was estimated from the surface to 33.8 m
Cruising after a Covid-19 Pandemic: Factors Influencing Tourists’ Purchase Intention
Get PDFThe global cruise tourism industry has been significantly impacted by the COVID-19 pandemic. As a result, it is important to understand the factors that affect tourists' decision to purchase cruise holidays after the pandemic. To accomplish this, a conceptual model based on the perceived value theory and incorporating concepts such as destination image, perceived risk, and purchase intention is proposed. This framework can be utilized to investigate tourists' purchase intention for cruise holidays and assist the cruise tourism industry in devising appropriate policies and designing cruise tourism products. This study is the first to develop a model for tourists' purchase intentions for cruise holidays after the COVID-19 outbreak
Word Frequencies in Linguistic Articles Published in SINTA Indexed Journals
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Multiword sequences are a language pattern that occurs when a bunch of words emerge in a similar register. In research papers conducted by lecturers and students, different topic areas and indexes has created various characteristics of lexical bundles. The method of this research is qualitative, combining corpus design to identify the sequence of words within the text. The corpus data were generated from five different indexing journals, yet the topic is linguistics. Initially, the whole papers were converted to text format to deal with readability in the program used. The program used was Orange Apps version 3.27 by applying the textable, data table, and text mining menus. The sources of the data are emphasized as being academic research indexed in SINTA 5, published in 2020. The main theory of used in this research is that of Biber’s (2007) which discusses the main characteristics and number of criteria for defining word strings. This observation resulted in 207.896 characters and 33.636 words. There were 4,273 words based on the pre-processing analysis result, which included transformation, tokenization, and PoS-tagging. From a total of 4,273 words, virus, deixis, and slang were the most frequently occurring. Based on these results, it can be concluded that the majority of journal articles are about viruses and slang. They pertain to the prevalent topic of pandemics at the time the journals were published. When the process of writing a journal article is in progress, this information may aid the authors in identifying the journal’s keywords and most frequent words