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Pengaruh Latihan Koordinasi Gerak dan Latihan Core Stability Terhadap Peningkatan Kesesuaian Gerak Dan Kecepatan Renang Gaya Dada
Get PDFThis study examines the effect of movement coordination and core stability training on increasing the suitability of movements and speed of breaststroke swimming. The sample in this study amounted to 20 people who were taken using purposive sampling technique, then ordinal pairing was carried out to divide each group, the control group (not getting training) and the experimental group (getting training). The research method used in this study was a quasi-experimental with a nonequivalent control group design pattern. The parameters used to measure the suitability of movement are the breaststroke swimming movement suitability analysis indicator form, while the swimming speed is a 50-meter breaststroke swimming test. The results showed that movement coordination training and core stability training significantly increased the suitability of movement and swimming speed, with a significance value of p <0.05. The greatest increase was seen in athletes in the experimental group, especially in athletes with age categories III and IV, compared to the control group. Thus, athletes will get a training pattern that suits their respective characteristics, so that they feel comfortable and motivated in the training process towards achieving training goals. For further research, data collection on the suitability of breaststroke movements was carried out using a video camera so that the movement assessment was clearer and more detailed.Penelitian ini mengkaji pengaruh Latihan koordinasi gerak dan core stability terhadap peningkatan kesesuaian gerakan serta kecepatan renang gaya dada. Sampel pada penelitian ini berjumlah 20 orang yang diambil menggunakan teknik purposive sampling, kemudian dilakukan ordinal pairing untuk membagi setiap kelompoknya, kelompok kontrol (tidak mendapatkan latihan) dan kelompok eksperimen (mendapatkan latihan). Metode penelitian yang digunakan dalam penelitian ini adalah kuasi eksperimen dengan pola nonequivalent control group design. parameter yang digunakan untuk mengukur kesesuaian gerak adalah formulir indikator analisis kesesuaian gerak renang gaya dada, sedangkan kecepetan renang tes renang gaya dada sepanjang 50 meter. Hasil penelitian menunjukkan bahwa latihan koordinasi gerak dan Latihan core stability secara signifikan meningkatkan kesesuaian gerakan dan kecepatan renang, dengan nilaihsignifikansi p < 0,05. Peningkatan terbesar terlihat pada atlet di kelompok eksperimen, terutama pada atlet dengan kategori usia III dan IV, dibandingkan dengan kelompok control Dengan demikian, para atlet akan mendapatkan pola latihan yang sesuai dengan karakteristik masing-masing, sehingga mereka merasa nyaman dan termotivasi dalam proses latihan menuju pencapaian tujuan latihan. Untuk penelitian selanjutnya pengambilan data kesesuaian gerak dada dilakukan dengan menggunakan video kamera agar penilaian gerak lebih jelas dan detail
X-Band Metasurface EM Wave Absorber using SRR and Stripline: Model, Design and Implementation
Get PDFThis paper presents a model, design, and implementation of a metasurface electromagnetic (EM) wave absorber for operation in the frequency range of the X-band. The model of the metasurface was constructed with a split ring resonator (SSR) and a stripline and it was designed with a single unit cell, whereby the results were approached with transmission line theory for patch impedance extraction. Implementation of a metasurface EM wave absorber was deployed on an FR4 Epoxy dielectric substrate with dimensions of 80-unit cells 80-unit cells and characterized with two horn antennas, which were connected to a signal generator as the transmitter and a spectrum analyzer as the receiver. In front of the horn antennas a device under test (DUT) was installed, i.e., a metasurface EM wave absorber and a metal plate with similar dimensions. The metal plate was expected to perform full reflection at the same distance and antenna orientation. The same condition was used as a normalization factor to optimize the absorption of the metasurface EM wave absorber. The characterization results showed that the minimum normalized absorption of the SRR and stripline at the designated measurement distances was 0.99, 0.99, 0.99, and 0.97, at frequencies of 8.85 GHz, 9.08 GHz, 9.15 GHz, and 9.10 GHz, respectively, and a antenna orientation
DAMPAK PLATFORMISASI PADA TATA KELOLA MUSIK STREAMING DI INDONESIA DAN PERLAWANANNYA OLEH MUSISI INDIE LOKAL
Get PDFIssues of inequality and injustice have become prevalent in economic-political discourse in digital media, particularly because of the impact of platformization on digital streaming platforms. This article examines how platformization shapes cultural production, the governance of the music streaming industry, and the resistance againts its dominance in Indonesia emerge. Through observations and interviews with indie music practitioners in Indonesia, this article discusses platform-based cultural production and the rise of new power held by aggregators in the music-streaming industry. The discussion is divided into the impact of platformization on indie musicians and alternative production patterns that challenge platform-based cultural production in Indonesia. This article aims to provide an overview of the impact of platformization on indie musicians in Indonesia and to explore alternative methods that encourage musicians to gain independence from platforms.Isu ketimpangan dan ketidakadilan merupakan wacana ekonomi politik pada media digital yang muncul akibat dampak platformisasi pada platform streaming digital. Artikel ini ingin membahas produksi budaya platformisasi yang membentuk dan mempengaruhi tata kelola industri musik streaming, serta pola perlawanan yang ada dalam menghadapi dominasi platformisasi di Indonesia. Melalui studi kasus, konferensi/seminar, dan wawancara dengan para pelaku musik indie di Indonesia, kita dapat mempelajari bagaimana platformisasi dikelola, dan munculnya kekuatan baru yang dimiliki oleh agregator di industri musik streaming. Artikel ini terbagi menjadi pembahasan mengenai dampak platformisasi terhadap musisi indie dan pola produksi alternatif dalam melawan produksi budaya berplatform di Indonesia. Artikel ini bertujuan untuk memberikan gambaran mengenai dampak platformisasi terhadap musisi indie di Indonesia dan mencari alternatif metode yang mendorong musisi untuk mandiri terhadap platform
Race Against Time: How Bus Transport Stacks Up Against Private Cars
Get PDFThis paper compares the IVT (in-vehicle time) parameter and travel distance for public bus transport (which forms the core of the public transport system) and private cars in the Metropolis GZM (Upper Silesian and Zagłębie Metropolis) in Poland. Analysis was conducted on three datasets: all metropolitan lines, main metropolitan lines, and feeder metropolitan lines. The results show that for all metropolitan lines, public transport achieves an average IVT parameter value about twice as high as private transport. The main metropolitan lines are characterized by relatively high competitiveness compared to individual transport. However, the competitiveness of public transport decreases with distance traveled. It is also important to note that these lines primarily connect major points in the city and other factors can significantly affect its competitiveness, such as waiting time and overcrowding during peak hours. This article is directed towards decision-makers in urban transport management, urban activists, public transport passengers, city authorities, and scientists interested in urban logistics and the effectiveness of public transport
Pemodelan Sebaran dan Waktu Tinggal Limbah Panas di Teluk Bontang
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The water mass exchange process between a bay and an open sea can flush effluents or pollutants that enter the bay. This paper describes a two-dimensional numerical modelling study on thermal water dispersion due to hydrodynamic processes in The Bontang Bay and the bay flushing capability. The numerical model used is Delft3D. Model input data was including bathymetry, water elevation, discharge of seawater intake and outfall, wind speed, and temperature of the thermal water effluent discharged into Bontang Bay. The modelling results were verified with observation data. Verification results shows that error of water elevation is 0.07 m, while current speed error is 0.26 m/s. Dispersion modeling results indicate that 40°C thermal water discharged at a rate of 24.6 m³/s into Bontang Bay has increased the water temperature in the bay by 1°C to 2°C. This increase in temperature potentially has a negative impact on aquatic ecosystems. An increase in water temperature of 1°C and 2°C covers areas of 19.32 km² and 7.26 km² in the bay, respectively. The residence time of thermal water in Bontang Bay is 3 days and 12 hours before flushing.
Keywords: Thermal dispersion, exchange process, residence time, flushing timeAbstrak
Proses pertukaran massa air antara teluk dengan laut lepas dapat membilas limbah yang masuk ke teluk tersebut. Makalah ini membahas kajian pemodelan numerik dua dimensi tentang sebaran atau dispersi limbah air panas akibat proses hidrodinamika di Teluk Bontang dan kemampuan pembilasan yang terjadi di teluk ini. Model numerik yang digunakan adalah Delft3D. Data input model mencakup batimetri, elevasi muka air, debit penarikan dan pembuangan air laut, kecepatan angin, serta suhu limbah air panas yang dialirkan ke Teluk Bontang. Hasil pemodelan diverifikasikan terhadap data observasi. Hasil verifikasi mengindikasikan galat elevasi muka air sebesar 0,07 m, sementara galat kecepatan arus sebesar 0,26 m/s. Hasil pemodelan dispersi limbah panas bersuhu 40°C yang dialirkan ke Teluk Bontang dengan debit 24,6 m³/s telah mengidikasikan peningkatan suhu lingkungan perairan teluk sebesar 1°C hingga 2°C, sehingga perubahan suhu lingkungan ini berpotensi memberikan dampak negatif terhadap ekosistem perairan. Area perairan teluk yang suhunya meningkat 1°C dan 2°C masing-masing melingkupi luasan sebesar 19,32 km² dan 7,26 km². Waktu tinggal limbah panas di perairan Teluk Bontang sebelum terbilas adalah 3 hari dan 12 jam.
Kata-kata Kunci: Dispersi termal, proses pertukaran, waktu tinggal, waktu bila
The VALIDASI METODE DAN PENETAPAN KADAR FLAVONOID TOTAL SEDIAAN PEMBERSIH WAJAH ROSELLA BERBASIS AIR MENGGUNAKAN SPEKTROFOTOMETRI UV-VIS
No full textRosella flower extract is known rich in flavonoid anthocyanin that has activity as antipollutants. So it has potential to be developed as a facial cleansing products. On previous studies, the optimum formula of roselle flower extract facial wash gell and micellar water has been obtained as water-base cleansing face products. Analysis of the of chemical compounds in both formula is essential to be conducted in order to determine their flavonoid content for their quality evaluation. In the analysis process, validated method should be used to ensure the method is performed in accordance to its purpose. This study aimed to validate the method and analyze total flavonoid content in the optimum formula of facial wash gell and micellar water containing rosella flower extract. The research was conducted using a UV-Vis spectrophotometry and method's validity was determined by analyzing linearity, LOD, LOQ, precision and accuracy parameter. Based on the results of the validation, all parameters of the analysis tested were qualified. The total flavonoid content of facial wash gell and micellar water determined by the valid method were 0.482 ± 0.008 mg QE/g and 0.136 ± 0.001 mg QE/g.Ekstrak bunga rosella diketahui kaya akan senyawa flavonoid antosianin yang memiliki aktifitas sebagai antipolutan, sehingga berpotensi untuk dikembangkan sebagai sediaan kosmetik pembersih wajah. Berdasarkan pada penelitian yang telah dilakukan sebelumnya telah didapatkan formula optimum sediaan berbasis air, yaitu facial wash gell dan micellar water ekstrak bunga rosella. Analisis kandungan senyawa kimia dalam kedua sediaan sangat penting dilakukan agar dapat mengetahui kadar flavonoid antosianinnya dalam rangka evaluasi mutu produk yang telah dikembangkan. Dalam proses analisis, metode pengujian yang digunakan harus valid untuk menjamin bahwa metode yang digunakan telah sesuai dengan tujuannya. Penelitian ini bertujuan untuk melakukan validasi metode dan menganalisis kadar flavonoid total dalam sediaan facial wash gell dan micellar water ekstrak bunga rosella. Pengujian dilakukan dengan metode spetrofotometri UV-Vis dimana penentuan validitas metode dilakukan dengan menganalisis nilai parameter linearitas, LOD, LOQ, presisi dan akurasinya. Berdasarkan pada hasil analisis validasi metode, seluruh parameter analisis yang diuji telah memenuhi syarat. Kandungan senyawa flavonoid total pada sediaan facial wash gell dan micellar water yang ditetapkan dengan metode yang telah valid sebesar 0,482 ± 0,008 mgQE/g dan 0,136 ± 0,001 mgQE/g
Penyebaran Rumor dalam Masyarakat: Sebuah Pendekatan Pemodelan Matematika dalam Studi Kasus Pemilihan Umum
No full textRumors can be defined as unverified information or statements shared by people that may be positive or negative and circulate without confirmation. Since humans naturally seek factual information for social and self-enhancement purposes, rumors become an inevitable aspect of human life, including in politics, such as elections. The complexity of the electoral process, with various factors such as individual candidates, social circumstances, and particularly the media, leads to the dynamic spread of rumors in society. Thus, it is both interesting and important to understand the dynamics of rumor spreading, particularly in the context of elections. In this article, we formulate a mathematical model of rumor spread dynamics based on different attitudes of people toward rumors. The model considers the spread of rumors about two candidates in the electoral context. From the model, we derived and investigated the basic reproductive number (R0) as a threshold for rumor spread and conducted a sensitivity analysis with respect to all the model parameters. Based on numerical experiments and simulations, it was revealed that the number of people resistant to or disbelieving in rumors increases significantly in the first ten days and remains higher than other subpopulations for at least after first seven days. Furthermore, we found that a high number of people directly affected by rumors, combined with the rumor transmission rate for both candidates being greater than each other, are necessary and sufficient conditions for rumors to circulate rapidly and remain stable in society. The results of this study can be interpreted and considered as a campaign strategy in an electoral context.Rumor dapat didefinisikan sebagai informasi atau pernyataan yang belum terverifikasi yang dibagikan oleh orang-orang, dapat berupa positif atau negatif, dan beredar tanpa konfirmasi. Karena manusia secara alamiah berusaha mencari informasi faktual untuk sosial dan pengembangan dirinya, rumor menjadi aspek yang tak terhindarkan dalam kehidupan manusia, termasuk dalam politik, seperti pemilihan umum. Kompleksitas proses pemilihan umum, dengan berbagai faktor yang terlibat seperti kandidat individu, sosial, dan terutama media, menyebabkan penyebaran rumor yang dinamis dalam masyarakat. Oleh karena itu, menarik sekaligus penting untuk memahami dinamika penyebaran rumor, khususnya dalam konteks pemilihan umum. Dalam artikel ini, kami memformulasikan model matematika dinamika penyebaran rumor berdasarkan perbedaan sikap yang dimiliki orang terhadap rumor. Model ini mempertimbangkan penyebaran rumor tentang dua kandidat dalam konteks pemilihan umum. Dari model tersebut, kami memperoleh dan menyelidiki bilangan reproduksi dasar (R0) sebagai acuan untuk penyebaran rumor dan melakukan analisis sensitivitas terhadap semua parameter model. Berdasarkan eksperimen numerik dan simulasi, terungkap bahwa jumlah orang yang resisten atau tidak percaya pada rumor meningkat secara signifikan dalam sepuluh hari pertama dan tetap lebih tinggi daripada subpopulasi lainnya setidaknya setelah tujuh hari pertama. Selain itu, kami menemukan bahwa jumlah orang yang terpengaruh langsung dengan rumor, dikombinasikan dengan laju penyebaran rumor untuk kedua kandidat yang lebih besar satu sama lain, merupakan kondisi yang diperlukan dan cukup untuk rumor dapat beredar dengan cepat dan tetap stabil di masyarakat. Hasil dalam studi ini dapat diinterpretasikan dan dipertimbangkan sebagai suatu strategi kampanye dalam konteks pemilihan umum
PENGEMBANGAN DESA WISATA BERKELANJUTAN DI DESA WISATA GUNUNG MUDA BERDASARKAN ANALISIS PESTEL
Get PDFDesa Wisata Gunung Muda terdapat di Dusun Air Abik yang merupakan permukiman masyarakat Mapur atau sering juga disebut sebagai Orang Lom. Orang Mapur terdiri dua golongan, yakni masyarakat yang sudah beralih menjadi umat beragama (Orang Lah) dan masyarakat yang masih mempertahankan kepercayaan Mapur Dangkel (Orang Lom). Faktor keberlanjutan menjadi perhatian utama saat ini dalam arah kebijakan pembangunan nasional di semua sektor, termasuk pariwisata. Salah satu manifestasi arah kebijakan tersebut adalah pembangunan desa wisata yang mengutamakan pemberdayaan dan partisipasi aktif dari masyarakat. Penetapan Desa Gunung Muda menjadi desa wisata tentu saja memberikan dampak bagi masyarakat, baik dari faktor Politic, Economy, Social, Technologi, Environment, Law (PESTEL). Penelitian ini bertujuan untuk menganalisis sejauh mana faktor-faktor PESTEL mempengaruhi pengembangan desa wisata berkelanjutan di Desa Gunung Muda. Metode penelitian yang dilakukan dengan menggunakan pendekatan kualitatif, yang meliputi wawancara, literature review, dan obeservasi.Desa Wisata Gunung Muda terdapat di Dusun Air Abik yang merupakan permukiman masyarakat Mapur atau sering juga disebut sebagai Orang Lom. Orang Mapur terdiri dua golongan, yakni masyarakat yang sudah beralih menjadi umat beragama (Orang Lah) dan masyarakat yang masih mempertahankan kepercayaan Mapur Dangkel (Orang Lom). Faktor keberlanjutan menjadi perhatian utama saat ini dalam arah kebijakan pembangunan nasional di semua sektor, termasuk pariwisata. Salah satu manifestasi arah kebijakan tersebut adalah pembangunan desa wisata yang mengutamakan pemberdayaan dan partisipasi aktif dari masyarakat. Penetapan Desa Gunung Muda menjadi desa wisata tentu saja memberikan dampak bagi masyarakat, baik dari faktor Politik, Ekonomi, Sosial, Teknologi, Environment, Law (PESTEL). Penelitian ini bertujuan untuk menganalisis sejauh mana faktor-faktor PESTEL mempengaruhi pengembangan desa wisata berkelanjutan di Desa Gunung Muda. Metode penelitian yang dilakukan dengan menggunakan pendekatan kualitatif, yang meliputi wawancara, literature review, dan obeservasi
Sedimentary Facies, Palynology, and Organic Geochemistry of Eocene Kalumpang Formation in Lariang and Karama Areas, West Sulawesi, Indonesia
Get PDFThe Kalumpang Formation was deposited in a delta plain setting. A Middle to Late Eocene age (Proxapertites operculatus zone) was inferred from palynological analysis, with a paleoenvironment in a coastal plain setting with a strong terrestrial influence. Samples from the Kalumpang Formation indicate a marginal to early mature stage for hydrocarbon generation. It is mostly composed of gas-prone to oil and gas-prone Type III kerogen facies. The biomarker character of both the rock and oil samples suggests a terrestrial origin, with a significant contribution of estuarine or bay organic material. The oil derives from a non-carbonate lithology, while the rock samples are from carbonate/calcareous shale origin. The abundance of oleanane compound and C30 resins suggests higher plant angiosperm input of Late Cretaceous or younger age for both the rock and the oil samples. The oil seep contains more abundant oleananes compared to the carbonaceous mudstone of the Kalumpang Formation. This suggests that the oil originated from more marine facies than the rock samples, which were deposited in a delta plain setting. This study demonstrated the agreement of depositional environment interpretation and age assessment between lithofacies, palynological, and organic geochemistry analysis
Land Development Process in Urban River Areas: A Case in Palangka Raya City, Indonesia
Get PDFLand development in Indonesia has undergone significant formal and informal changes that affect urban planning and development. Most studies discuss the issue of land development in urban mainland and coastal areas, while fewer studies explain this process in the context of river-based urban regions. This paper describes physical and non-physical factors that drive land development processes, both formally and informally, in urban river areas, including built-up area conditions, land status, involved agents, institutions, and market mechanisms. Researchers selected the Old Town area along the Kahayan River in Palangka Raya City as the study area. This study collected spatial data and reports, conducted field observations, and conducted interviews. Researchers used spatial, descriptive, and content analyses to analyze the data. Aspects of the land market, namely land transactions, land prices, values, and supply-demand issues, were obtained based on secondary data. Physical and non-physical factors of land development were analyzed based on the review of transcripts from in-depth interviews, especially those related to the built-up area conditions, land status, land-use pattern, and infrastructure needs. This study revealed that the government concentrates on formally developing land within the primary infrastructure system through intervention and support from the private sector, which leads to influence of market mechanisms. In contrast, informal land development occurs without the private sector’s intervention or government policies. This study recommends increasing local community capacity to understand formal and informal land development processes by supporting infrastructure development, improving institutional capacity, allocating land development zones, and strengthening urban policies and regulations