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LI, JINGZHOU, et GUENTHER RUHE. « SOFTWARE EFFORT ESTIMATION BY ANALOGY USING ATTRIBUTE SELECTION BASED ON ROUGH SET ANALYSIS ». International Journal of Software Engineering and Knowledge Engineering 18, no 01 (février 2008) : 1–23. http://dx.doi.org/10.1142/s0218194008003532.
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Estimation by analogy (EBA) predicts effort for a new project by learning from the performance of former projects. This is done by aggregating effort information of similar projects from a given historical data set that contains projects, or objects in general, and attributes describing the objects. While this has been successful in general, existing research results have shown that a carefully selected subset, as well as weighting, of the attributes may improve the performance of the estimation methods. In order to improve the estimation accuracy of our former proposed EBA method AQUA, which supports data sets that have non-quantitative and missing values, an attribute weighting method using rough set analysis is proposed in this paper. AQUA is thus extended to AQUA+ by incorporating the proposed attribute weighting and selection method. Better prediction accuracy was obtained by AQUA+ compared to AQUA for five data sets. The proposed method for attribute weighting and selection is effective in that (1) it supports data sets that have non-quantitative and missing values; (2) it supports attribute selection as well as weighting, which are not supported simultaneously by other attribute selection methods; and (3) it helps AQUA+ to produce better performance.
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Acharya, Swarup, Phillip B. Gibbons, Viswanath Poosala et Sridhar Ramaswamy. « The Aqua approximate query answering system ». ACM SIGMOD Record 28, no 2 (juin 1999) : 574–76. http://dx.doi.org/10.1145/304181.304581.
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Muresan, D. D., et T. W. Parks. « Adaptively Quadratic (AQua) Image Interpolation ». IEEE Transactions on Image Processing 13, no 5 (mai 2004) : 690–98. http://dx.doi.org/10.1109/tip.2004.826097.
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Pohl-Mayerhöfer, Renate, Anneka Beck, Silke Grinke, Judith Haase, Robert Hantsch, Stephanie Haupt, Hartmut Reinke, Inga Scheumann et Julia Weigt. « Die Online-Netzwerkstatt AQUA e.V. für Promovierende : Weggefährt*innen zwischen Technik, E-Science und Gruppenprozessen ». Qualitatives Methodenlernen im Kontext digitaler Medien 21, no 2-2020 (14 janvier 2021) : 233–44. http://dx.doi.org/10.3224/zqf.v21i2.06.
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Die Online-Forschungswerkstatt AQUA besteht seit ca. 17 Jahren, der Beitrag zeichnet nach, in welche Richtung sie sich entwickelte. Nach Darstellung der Genese von AQUA (1) erfolgt eine Anbindung an den Diskurs über die besonderen Herausforderungen der Promotionsphase (2). Es wird die Online-Netzwerkstatt AQUA e.V. in ihrer spezifischen Positionierung als Variante einer Struktur qualitativen Forschens vorgestellt (3). Der Artikel schließt mit der Beschreibung vom Ablauf der Sitzungen, der Lernumgebung und der genutzten Technologie, insbesondere der Nutzung bestimmter Funktionen der neuen Generation sozialer Software im Web 2.0 (4).
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Norvill, Craig, Felix Bockelmann, Patrick Blumenberg et Simon Goodall. « Investigation of Elekta AQUA software for kilovoltage to megavoltage radiation isocenter coincidence ». Physical and Engineering Sciences in Medicine 44, no 3 (25 mai 2021) : 667–75. http://dx.doi.org/10.1007/s13246-021-01014-1.
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Li, Jingzhou, et Guenther Ruhe. « Analysis of attribute weighting heuristics for analogy-based software effort estimation method AQUA+ ». Empirical Software Engineering 13, no 1 (27 novembre 2007) : 63–96. http://dx.doi.org/10.1007/s10664-007-9054-4.
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van Leeuwen, J., M. Holmes, U. Kaeding, R. Daly et D. Bursill. « Development and implementation of the software mEnCo© to predict coagulant doses for DOC removal at full-scale WTPs in South Australia ». Journal of Water Supply : Research and Technology-Aqua 58, no 4 (juin 2009) : 291–98. http://dx.doi.org/10.2166/aqua.2009.054.
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Hsiang-Ying Wang, Hsiang-Ying Wang, Rich C. Lee Hsiang-Ying Wang, Hsien-I. Lin Rich C. Lee et Yung-Yao Chen Hsien-I Lin. « The Challenge of Aqua Creatures Specie Classification in the Aquarium Innovation Theme ». 網際網路技術學刊 22, no 7 (décembre 2021) : 1473–81. http://dx.doi.org/10.53106/160792642021122207002.
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Sunarni, Esse, La Ode Muhammad Yasir Haya et Nur Irawati. « STUDI SEBARAN SUHU PERMUKAAN LAUT DI PERAIRAN TELUK BONE MENGGGUNAKAN CITRA AQUA MODIS ». Jurnal Sapa Laut (Jurnal Ilmu Kelautan) 5, no 3 (11 août 2020) : 263. http://dx.doi.org/10.33772/jsl.v5i3.13456.
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Suhu permukaan laut merupakan salah satu parameter oseanografi yang sangat penting bagi kehidupan organisme di lautan. Penelitian ini bertujuan untuk mengetahui sebaran suhu permukaan laut dengan menggunakan citra satelit Aqua MODIS pada perairan Teluk Bone secara spasial dan temporal. Data yang digunakan yaitu data suhu permukaan laut bulanan April 2018-Maret 2019 yang diperoleh dari sensor satelit Aqua MODIS level-3 yang diunduh dari NASA (OCEAN COLOR atau link http://modis.gfsc.nasa.gov/data kemudian pengolahan data citra dilakukan menggunakan software SeaDas. Hasil dari data citra sebaran suhu permukaan laut tertinggi pada Mei 2018 berkisar antara 29,13-32,00oC terletak di perairan Palopo dan suhu permukaan laut terendah berada pada bulan Maret 2019 berkisar antara 27,10-30,60oC. terletak di perairan Bulukumba.Kata kunci: Teluk Bone, satelit Aqua MODIS, suhu permukaan laut.
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Chen, L., C. Kow, N. A. Afira, E. Mok, S. Teng et A. M. Gilmore. « Use of simultaneous absorbance-transmittance and excitation-emission matrix (A-TEEM) spectroscopy to monitor source water contamination for waterworks ». Journal of Water Supply : Research and Technology-Aqua 71, no 1 (29 novembre 2021) : 62–71. http://dx.doi.org/10.2166/aqua.2021.120.
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Abstract Conventional oil-in-water analyzers used by waterworks have hydrocarbon detection limits at mg/L levels and do not identify the type of oil compounds. The objectives of this study were to evaluate a more sensitive optical instrument and the analysis method to (1) determine the signature excitation and emission matrixs of each type of oil (such as diesel, heavy oil, gasoline and kerosene) or their indicator organic compounds and enter them into the instrument's software library and (2) test out the effectiveness of the instrument in detecting the above-mentioned oil in local waterworks’ source and treated water. The patented simultaneous absorbance-transmittance excitation-emission matrix (A-TEEM) instrument method was used to identify and quantify low levels of organic contaminants present in a much higher background of other dissolved organic matter components in raw and treated water. Multivariate regression and machine learning techniques were applied and shown to have potential for alerting plant operators to organic contamination events.
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Menapace, Andrea, Giuseppe Roberto Pisaturo, Alberto De Luca, Daniel Gerola et Maurizio Righetti. « EPANET in QGIS framework : the QEPANET plugin ». Journal of Water Supply : Research and Technology-Aqua 69, no 1 (31 octobre 2019) : 1–5. http://dx.doi.org/10.2166/aqua.2019.087.
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Abstract In the current era, the digitization of geographical data is a transverse need of several engineering sectors, including the hydraulic networks management. Thus, water supply systems' modelling requires adequate tools in both the digitization and the simulation phases. This paper presents the QEPANET plugin, which aims at merging the flexibility of QGIS and the robustness of EPANET hydraulic simulations software. Several editing and graphical tools available with QEPANET are introduced to model new and existing water distribution systems, to read and modify existing text-based EPANET files, to run simulations and visualize results in a geo-referenced framework. In addition, an application is illustrated to underline the novelty and the practical functionality of the presented tool, such as 3D pipe lengths' automatic calculation and the supporting functionalities for the network drawing. The plugin is available via the official QGIS Python Plugins Repository and on the world-wide-web at https://gitlab.com/albertodeluca/qepanet.
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Schirmer, Maximilian, et Tom Gross. « Lightweight Editing of Distributed Ubiquitous Environments ». International Journal of Distributed Systems and Technologies 2, no 4 (octobre 2011) : 57–73. http://dx.doi.org/10.4018/jdst.2011100105.
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Cooperative ubiquitous environments support user interaction and cooperative work by adapting to the prevalent situation of the present users. They are typically complex and have many environment components—interconnected devices and software modules—that realise new interaction techniques and facilitate collaboration. Despite this complexity, users need to be able to easily adapt their environments to the respective needs of the workgroups. In this paper, the authors present the CollaborationBus Aqua editor, a sophisticated, yet lightweight editor for configuring ubiquitous environments in groups. The CollaborationBus Aqua editor simplifies the configuration and offers advanced concepts for sharing and browsing configurations among users.
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Wu, Z. Y., A. Chew, X. Meng, J. Cai, J. Pok, R. Kalfarisi, K. C. Lai, S. F. Hew et J. J. Wong. « Data-driven and model-based framework for smart water grid anomaly detection and localization ». Journal of Water Supply : Research and Technology-Aqua 71, no 1 (16 décembre 2021) : 31–41. http://dx.doi.org/10.2166/aqua.2021.091.
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Abstract With increasing adoption of advanced meter infrastructure, smart sensors together with SCADA (Supervisory Control and Data Acquisition) systems, it is imperative to develop novel data analytics and couple the results with hydraulic modeling to improve the quality and efficiency of water services. One important task is to timely detect and localize anomaly events, which may include, but not be limited to, pipe bursts and unauthorized water usages. In this paper, a comprehensive solution framework has been developed for anomaly detection and localization by formulating and integrating data-driven analytics with hydraulic model calibration. Data analysis for anomaly detection proceeds in multiple steps including the following: (1) data pre-processing to eliminate and correct erroneous data records, (2) outlier detection by statistical process control methods and deep machine learning, and (3) system anomaly classification by correlation analysis of multiple sensor events. Classified system anomaly events are subsequently localized via hydraulic model calibration. The integrated solution framework is developed as a user-friendly and effective software tool, tested, and validated on the selected target areas in Singapore.
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Retsinis, Eugene, Erna Daskalaki et Panayiotis Papanicolaou. « Dynamic flood wave routing in prismatic channels with hydraulic and hydrologic methods ». Journal of Water Supply : Research and Technology-Aqua 69, no 3 (23 octobre 2019) : 276–87. http://dx.doi.org/10.2166/aqua.2019.091.
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Abstract Time-dependent, unsteady flow has been studied in prismatic open channels with symmetric trapezoidal and triangular cross sections and small bottom slope. The St Venant equations without lateral inflow have been discretized in explicit as well as in implicit form and solved numerically, for unsteady, subcritical flow. The inflow hydrograph used can be applied for different flood events by adjusting its parameters accordingly. The results presented are derived from the explicit schemes Lax-Diffusive, MacCormack, Lambda as well as the implicit Preissmann scheme, and are compared to those from the Muskingum-Cunge method and the widely used commercial software HEC-RAS. The peak flow computed by the Lax-Diffusive scheme was reduced at the downstream end of the channel and the arrival time of the peak increased if compared to the other methods. The Muskingun-Cunge method forecasted the shortest peak flow arrival time at the downstream end cross section. Mass conservation computed from inflow and outflow hydrographs has been confirmed, since the maximum error did not exceed 2.60%. All codes were implemented in house using Matlab®.
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Moharir, Kanak, Chaitanya Pande, Sudhir Kumar Singh, Pandurang Choudhari, Rawat Kishan et Lordwin Jeyakumar. « Spatial interpolation approach-based appraisal of groundwater quality of arid regions ». Journal of Water Supply : Research and Technology-Aqua 68, no 6 (31 juillet 2019) : 431–47. http://dx.doi.org/10.2166/aqua.2019.026.
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Abstract The primary objective was appraisal of groundwater quality during pre- and post-monsoon seasons for irrigation purposes. Good quality groundwater is required for high crop yields in arid regions. A total of 45 samples were collected from wells and analyzed in the laboratory for this research work. Different water quality parameters were determined from these samples, namely electrical conductivity (EC), sodium adsorption ratio (SAR), residual sodium carbonate (RSC), sodium percent (Na%), and permeability index (PI) during the pre- and post-monsoon season. The water types were identified through a Piper-trilinear diagram. Fifty per cent of the water samples of the total basin area fall under the saline category. The local farmers heavily rely on groundwater for the irrigation of crops. Excess use of groundwater for irrigation raises soil salinity. Some parts of the study area are facing serious problems such as loss of crop yields, and low availability of good quality groundwater even for drinking purposes. The results highlight that the study area has a high salinity content (C3) and low sodium (S1). The maps for different water quality parameters were generated using inverse distance weighted (IDW) interpolation method in ArcGIS 10.3 software.
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Wang, Yonglei, Wei Liu, Liping Tian, Ruibao Jia, Zhenqi Du et Anran Zhou. « Research on the CFD numerical simulation and process optimization of countercurrent–cocurrent dissolved air flotation ». Journal of Water Supply : Research and Technology-Aqua 68, no 5 (31 mai 2019) : 325–36. http://dx.doi.org/10.2166/aqua.2019.147.
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Abstract The countercurrent–cocurrent dissolved air flotation (CCDAF) process is a new type of air flotation process integrating countercurrent collision and cocurrent flow adhesion processes. The structural form of the CCDAF tank and its process parameters are the required conditions to achieve countercurrent collision and cocurrent adhesion. In this study, eight CCDAF tank process models were established with a flow rate of 0.5 m3/h. Flow field numerical simulation and process optimization of a CCDAF tank was conducted using Fluent software. The simulation results show that the optimal conditions for the CCDAF process are as follows: contact zone ascending velocity 10 mm/s, separation zone separation velocity 1.5 mm/s, dissolved gas pressure 0.45 MPa, and recirculating dissolved-gas distribution ratio R1/R2 1:1. Under these operating conditions, the flow state in the flotation tank is the most stable and the gas in the contact zone is evenly distributed. According to the simulation results, a 5 m3/h pilot plant was built. The structural dimensions were: B × L × H = 1,020 mm × 1,300 mm × 1,350 mm. The test results show that the CCDAF has a significant decontamination effect and is clearly superior to the cocurrent flow DAF process and countercurrent flow DAF process.
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Gustavson, Mark D., Brian Bourke-Martin, Dylan Reilly, Melissa Cregger, Christine Williams, Jane Mayotte, Maciej Zerkowski, Greg Tedeschi, Robert Pinard et Jason Christiansen. « Standardization of HER2 Immunohistochemistry in Breast Cancer by Automated Quantitative Analysis ». Archives of Pathology & ; Laboratory Medicine 133, no 9 (1 septembre 2009) : 1413–19. http://dx.doi.org/10.5858/133.9.1413.
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Abstract Context.—There is critical need for standardization of HER2 immunohistochemistry testing in the clinical laboratory setting. Recently, the American Society of Clinical Oncology and the College of American Pathologists have submitted guidelines recommending that laboratories achieve 95% concordance between assays and observers for HER2 testing. Objective.—As a potential aid to pathologists for achieving these new guidelines, we have conducted an examination using automated quantitative analysis (AQUA analysis) to provide a standardized HER2 immunohistochemistry expression score across instruments (sites), operators, and staining runs. Design.—We analyzed HER2 expression by immunohistochemistry in a cohort (n = 669) of invasive breast cancers in tissue microarray format across different instruments (n = 3), operators (n = 3), and staining runs (n = 3). Using light source, instrument calibration techniques, and a new generation of image analysis software, we produced normalized AQUA scores for each parameter and examined their reproducibility. Results.—The average percent coefficients of variation across instruments, operators, and staining runs were 1.8%, 2.0%, and 5.1%, respectively. For positive/negative classification between parameters, concordance rates ranged from 94.5% to 99.3% for all cases. Differentially classified cases only occurred around the determined cut point, not over the entire distribution. Conclusions.—These data demonstrate that AQUA analysis can provide a standardized HER2 immunohistochemistry test that can meet current guidelines by the American Society of Clinical Oncology/College of American Pathologists. The use of AQUA analysis could allow for standardized and objective HER2 testing in clinical laboratories.
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Simamora, Virgo, et Celeste Celeste. « PENGARUH REPUTASI PERUSAHAAN TERHADAP KEPUTUSAN PEMBELIAN DENGAN KEPERCAYAAN KONSUMEN SEBAGAI VARIABEL INTERVENING (Studi Kasus Pada Konsumen Air Minum Dalam Kemasan Galon Merek AQUA di Kecamatan Tanjung Priok Jakarta Utara) ». Jurnal Akuntansi Manajerial (Managerial Accounting Journal) 2, no 2 (1 janvier 2018) : 24–36. http://dx.doi.org/10.52447/jam.v2i2.930.
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Penelitian ini bertujuan untuk mengetahui pengaruh reputasi perusahaan terhadap keputusan pembelian dengan kepercayaan konsumen sebagai variabel intervening pada konsumen air minum dalam kemasan galon merek Aqua di Kecamatan Tanjung Priok Jakarta Utara. Jenis penelitian ini adalah penelitian Explanatory. Populasi pada penelitian ini adalah ibu rumah tangga yang memutuskan untuk membeli air minum dalam kemasan galon merek Aqua. Metode pengambilan sampelnya adalah purposive sampling dengan jumlah sampel sebanyak 399 orang dari 170.594 populasi. Untuk mengumpulkan data menggunakan kuesioner, sedangkan untuk mengolah data menggunakan software Smart PLS (Partial Least Square) versi 3. Teknik analisis data yang digunakan adalah regresi berganda. Hasil penelitian ini menunjukkan bahwa: (1) ada pengaruh positif antara reputasi perusahaan terhadap keputusan pembelian (2) ada pengaruh positif antara reputasi perusahaan terhadap kepercayaan konsumen (3) ada pengaruh positif antara kepercayaan konsumen terhadap keputusan pembelian (4) ada pengaruh positif antara reputasi perusahaan terhadap keputusan pembelian melalui kepercayaan konsumen.
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Antonelli, L. A., F. M. Zerbi, G. Chincarini, G. Ghisellini, M. Rodonò, G. Cutispoto, P. Conconi et al. « REM : A Fast Slewing Robotized Telescope to Catch Near-InfraRed Afterglow of GRBs ». Symposium - International Astronomical Union 214 (2003) : 387–90. http://dx.doi.org/10.1017/s0074180900194781.
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REM (Rapid Eye Mount) is a fully robotized fast slewing telescope equipped with a high throughput Near InfraRed (Z′, J, H, K′) camera (REMIR) and an optical slitless spectrograph (ROSS). A dedicated software for data reduction and software (AQuA) has been developed to extract scientific information from REM images without any human intervent. REM is installed in La Silla (Chile) and dedicated to detect and study the prompt optical/IR afterglow of Gamma Ray Bursts with the ambitious project of discovering objects at extremely high redshift. The synergy between REMIR camera and ROSS makes REM a powerful observing tool for any kind of fast transient phenomena.
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Arevalo, C., I. Ramos, J. Gutiérrez et M. Cruz. « Practical Experiences in the Use of Pattern-Recognition Strategies to Transform Software Project Plans into Software Business Processes of Information Technology Companies ». Scientific Programming 2019 (2 mai 2019) : 1–21. http://dx.doi.org/10.1155/2019/7973289.
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Business process management (BPM) is a strategic advantage for all kinds of organizations, including information technology companies (ITCs), which cannot stay out of the BPM approach. ITCs manage business processes like projects to create and maintain software. Although Project Management Systems (PMSs), such as Microsoft™ Project Server® (MPS®), are considered as non-process-aware information systems (Non-PAISs), they may be a source to generate processes. In this paper, we propose a reverse engineering approach, which uses patterns to transform software projects stored in MPS® legacy databases into software business processes. For this, we base on the model-driven engineering paradigm and deal with the time perspective of the processes. This kind of experiences are scarce or almost nonexistent, so we show the AQUA-WS project case study, which runs with MPS® as source system and software process modeling languages as target systems. ITCs can benefit from this research by gathering knowledge about perspectives of their processes that would otherwise be wasted, such as executed projects or expired documents used in Non-PAISs. This fact can become a key factor for ITCs, which can increase their competitiveness and reduce software costs, as part of the BPM lifecycle of continuous improvement.
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Craig, K., C. De Traversay, B. Bowen, K. Essemiani, C. Levecq et R. Naylor. « Hydraulic study and optimisation of water treatment processes using numerical simulation ». Water Supply 2, no 5-6 (1 décembre 2002) : 135–42. http://dx.doi.org/10.2166/ws.2002.0161.
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Until recently, water treatment plants were frequently designed solely on the basis of the biological, chemical and physical constraints of processes. Nowadays, the use of Computational Fluid Dynamics (CFD) software enables the dimensioning of water treatment processes by taking into account the real hydraulic behaviour of processes. That has be done for the Coliban Water Aqua 2000 project, which consists of the construction of three water treatment plants. The disinfection performance of three ozone contactors were compared using the CFD software, Fluent. Moreover, the CFD application has been extended to a large range of water treatment processes in recent years. The paper presents several of these: flocculation tanks, UV reactors and secondary settling tanks.
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Tarigan, M. Salam, et Ngurah N. Wiadnyana. « PEMANTAUAN KONSENTRASI KLOROFIL-A MENGGUNAKAN CITRA SATELIT TERRA-AQUA MODIS DI TELUK JAKARTA ». Jurnal Kelautan Nasional 8, no 2 (1 août 2013) : 81. http://dx.doi.org/10.15578/jkn.v8i2.6226.
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Kelimpahan klorofil-a dapat digunakan sebagai indikator kesuburan perairan dan kejadian biakan massal fitoplankton atau Harmfull Algal Blooms (HAB) di suatu perairan. Kemajuan teknologi satelit telah mampu menampilkan data digital yang memainkan peran penting dalam memberikan hasil pola sebaran horizontal klorofil-a di perairan laut secara cepat dan akurat. Tujuan penelitian ini adalah untuk pemantauan distribusi konsentrasi klorofil-a dengan teknologi penginderaan jauh menggunakan satelit Terra-Aqua MODIS. Pemantauan konsentrasi klorofil-a di perairan Teluk Jakarta dilakukan dalam periode April sampai September 2010. Analisis citra untuk memetakan sebaran konsentrasi klorofil-a dilakukan dengan algoritma menggunakan software ENVI dan ArcGIS. Dengan analisis citra di laboratorium, dihasilkan peta-peta sebaran konsentrasi klorofil-a di perairan Teluk jakarta. Pada peta spasial dan temporal sebaran konsentrasi klorofil-a ditunjukkan nilai konsentrasi klorofil-a tinggi (>10 mg/m3)di selatan perairan Teluk Jakarta, dengan luas sebarannya mencapai sepertiga dari luas teluk terjadi pada 22 Mei – 22 September 2010. Hal ini mengindikasikan bahwa di perairan telah terjadi peningkatan kelimpahan fitoplankton dan sebagian menunjukkan ada dugaan terjadi Harmful Algal Blooms (HAB), sehingga mengakibatkan kematian ikan yang terdapat di pantai Ancol Teluk Jakarta.
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-, Parimin, Muhammad Yusuf et Muhammad Umar Maya Putra. « Analisis Faktor-Faktor yang Mempengaruhi Permintaan Air Minum Isi Ulang di Kota Binjai ». Jurnal Wira Ekonomi Mikroskil 6, no 2 (14 mars 2017) : 103–12. http://dx.doi.org/10.55601/jwem.v6i2.317.
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Penelitian ini bertujuan untuk menganalisis faktor-faktor yang mempengaruhi permintaan air minum isi ulang di Kota Binjai dengan variabel yang diteliti adalah harga air minum isi ulang (galon), anggota rumah tangga, jumlah pendapatan rumah tangga dan biaya pengeluaran air minum dalam kemasan (Aqua). Data yang digunakan merupakan data primer berupa kuisioner??? kepada pelanggan dengan periode observasi Pebruari s.d Maret 2016. Sedangkan metode analisis yang digunakan untuk data primer adalah Ordinary Least Square (OLS) dengan analisis program software E Views 6 dan data sekunder diperoleh mengenai gambaran umum??? tentang konsumsi air minum isi ulang dan hasil studi kepustakaan (Library Research) yang digunakan sebagai pendukung teori-teori yang relevan dengan penelitian. Dari hasil penelitian ini menunjukkan bahwa terdapat hubungan positif dan significant antara air minum isi ulang (galon), anggota rumah tangga dan jumlah pendapatan rumah tangga terhadap permintaan air minum isi ualang di Kota Binjai sebaliknya terdapat hubungan positif dan tidak significant antara biaya pengeluaran air minum dalam kemasan (Aqua) terhadap permintaan air minum isi ulang (galon) di Kota Binjai.
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Simanjuntak, Ryan Juliston Pangihutan, Komang Ngurah Suarbawa et I. Ketut Putra. « Analysis of Smoke Distribution in the Nusa Tenggara Islands Due to Forest and Land Fires ». BULETIN FISIKA 24, no 2 (6 mars 2022) : 114. http://dx.doi.org/10.24843/bf.2023.v24.i02.p07.
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This study analyzes the distribution of smoke in the Nusa Tenggara Islands due to forest and land fires. This study uses secondary data in September 2020, such as satellite image data and meteorological condition data, because in 2020, the Nusa Tenggara Islands have the largest forest fires, NTT reaches 114,719.00 Ha, and NTB reaches 29,157.00 Ha. In this study, to detect smoke caused by forest and land fires, the Himawari-8 satellite and the Terra Aqua satellite will produce images to detect smoke. The image data will be processed using Satellite Animation and Interactive Diagnosis (SATAID) software for the Himawari-8 satellite and Hypersectral Data Viewer for Development of Research Applications (HYDRA) for the Terra Aqua satellite. The image results from the satellite will detect and show the distribution of smoke with the red, green, blue (RGB) technique, where the RGB technique will provide color contrast to the image object to be detected. Then the image results analyzed, and linked to the meteorological conditions that occurred during forest and land fires in the Nusa Tenggara Islands in September 2020.
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Suriani, Mai, Mira Mauliza Rahmi, Ika Kusumawati, Dini Islama, Astrid Fauzia Dewinta et Heriansyah Heriansyah. « VARIABILITY ANALYSIS OF CHLOROPHYLL-A DISTRIBUTION ON THE COAST OF SOUTHWEST ACEH USING AQUA MODIS IMAGE ». Asian Journal of Aquatic Sciences 5, no 2 (10 août 2022) : 285–90. http://dx.doi.org/10.31258/ajoas.5.2.285-290.
Texte intégralRésumé :
Chlorophyll-a has an important role in determining the trophic status and estimation of the fertility level of water. The aim of this study was to analyze the variability of the concentration of chlorophyll-a on the coast of Southwest Aceh. This study uses remote sensing technology using Aqua MODIS imagery, the image used is an annual Level 3 Standard Mapped Image (SMI) chlorophyll-a image with a period of 7 years from 2015 to 2021 and has a spatial resolution of 4 km. The image is processed using software, namely SeaDAS and ArcMap. The results of this study showed that the distribution of the highest annual chlorophyll-a concentration was in 2019 at 0.29 – 2.27 mg/m3, and the lowest chlorophyll-a concentration was found in 2020 ranging from 0.29 – 1.02 mg/m3. The average concentration of chlorophyll-a in Southwest Aceh waters for 7 years (2015-2021) shows a low chlorophyll-a concentration ranging from 0.29 to 1.22 mg/m3 and belongs to oligotrophic and mesotrophic waters
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Lyu, Cheng-Hsuan, et William L. Barnes. « Ten Years of TRMM/VIRS On-Orbit Calibrations and Multiyear Comparisons of VIRS and MODIS ». Journal of Atmospheric and Oceanic Technology 25, no 12 (1 décembre 2008) : 2259–70. http://dx.doi.org/10.1175/2008jtecha1110.1.
Texte intégralRésumé :
Abstract After 10 years of successful operation of the Tropical Rainfall Measuring Mission (TRMM)/Visible Infrared Scanner (VIRS), based on sensor performance, the authors have reexamined the calibration algorithms and identified several ways to improve the current VIRS level-1B radiometric calibration software. This study examines the trends in VIRS on-orbit calibration results by using lunar measurements to enable separation of the solar diffuser degradation from that of the VIRS Earth-viewing sensor and by comparing the radiometric data with two nearly identical Moderate Resolution Imaging Spectroradiometer (MODIS) instruments on board the NASA Earth Observing System (EOS) Terra and Aqua satellites. For the VIRS, with spectral bands quite similar to several of the MODIS bands, the integrated lunar reflectance data were measured, from January 1998 to March 2007, at phase angles ranging from 0.94° to 121.8°. The authors present trending of the lunar data over periods of 4 yr (Aqua/MODIS), 6 yr (Terra/MODIS), and 10 yr (TRMM/VIRS) and use these observations to examine instrument radiometric stability. The VIRS-measured lunar irradiances are compared with the MODIS-measured lunar irradiances at phase angles around 54°–56°. With the upcoming modified VIRS level-1B version 7 calibration algorithm, the VIRS, along with MODIS, should provide better references for intercalibrating multiple Earth-observing sensors.
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Rambe, Pahala Roy, Mubarak Mubarak et Rifardi Rifardi. « A Map of Sea Surface Temperature in Rupat Strait Based on Satellite Image of Aqua-Modis ». Journal of Coastal and Ocean Sciences 3, no 1 (10 janvier 2022) : 54–59. http://dx.doi.org/10.31258/jocos.3.1.54-59.
Texte intégralRésumé :
The study aims to identify variations in the surface temperature of the water of dumai, Riau province, using the AQUA-Modis satellite. Data analysis uses seadas and surfer software. In this study, the method used was the survey method. Ground check done was to establish the immediate value of ocean surface temperature. It also measures the quality of the water and gives documented observations of the waters. Parameters measured in this study are those of the quality of the water covering: brightness, temperature, acidity (pH), and salinity. The measured parameters for the quality of water in the dumai waters were carried out at 3 stations that are thought to represent the parameters of the waters of the city of dumai. The result of the measured parameters for the quality of the dumai waters is known that for the value of the brightness of the dumai waters is between 7.5 and 16 cm, the water temperature is between 28-29 oC, the degree of acidity (pH) of water ranges between 6-7 and dumai water salinity (26-32‰). Based on studies that 2020 variations in surface temperature (SST) have a varying range of temperatures. Variations in surface temperature are marked by SST anomalies indicating that the value of negative anomalies indicates that an SST shift is marked by a drop in temperature
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Wiranto, Agung, et Tania Adialita. « PENGARUH GREEN PRODUCT KNOWLEDGE, GREEN TRUST DAN PERCEIVED PRICE TERHADAP GREEN PURCHASE INTENTION KONSUMEN AMDK MEREK AQUA DENGAN BOTOL 100% RECYCLED ». Jurnal Administrasi Bisnis 16, no 2 (23 décembre 2020) : 174–84. http://dx.doi.org/10.26593/jab.v16i2.4261.174-184.
Texte intégralRésumé :
Penelitian ini menguji pengaruh green product knowledge terhadap green purchase intention yang dimediasi oleh green trust dan peran perceived price sebagi moderasi antara green trust dengan green purchase intention pada AMDK merek Aqua dengan botol 100% recycled. Data yang digunakan dalam penelitian ini adalah data primer yang dikumpulkan dengan strategi survei melalui kuesioner elektronik dengan keterlibatan peneliti rendah, horizon waktu yang digunakan dalam penelitian ini merupakan crosssectional, jumlah responden dalam penelitian ini sebanyak 72 orang. Penelitian ini menggunakan uji hipotesis dengan software statistic program of social science (SPSS) versi 22. Hasil penelitian ini menunjukkan bahwa green product knowledge berpengaruh positif terhadap green trust. sedangkan green product knowledge tidak berpengaruh terhadap green purhcase intention melainkan harus dimediasi oleh green trust . Lalu green trust berpengaruh positif terhadap green pruchase intention dan dapat dimoderasi positif oleh perceived price.
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., Yusrizal, Muhamad Rama Safari, Aman Saputra, R. M. Tonny Kusumo Efyjanto, Abdul Basith et Heri Triyono. « Capture Area Compatibility with Map of Fishery Potential Area Based on Chlorophyl-a and Sea Surface Temperature in Aru Sea Waters-Indonesia ». Asian Journal of Fisheries and Aquatic Research 21, no 4 (13 février 2023) : 1–12. http://dx.doi.org/10.9734/ajfar/2023/v21i4544.
Texte intégralRésumé :
The Republic of Indonesia's Fisheries Management Area (Wilayah Pengelolaan Perikanan Negara Republik Indonesia) marine waters is an area with high capture fisheries potential, reaching 20% of the national fish potential. Fishing is often hampered by the lack of information related to Fishing Potential Zones, resulting in reduced efficiency. The solution offered is to utilize geographic information systems (GIS) or remote sensing with aqua MODIS satellite images of chlorophyll-a and sea surface temperature as data for mapping potential fishing zones. The objectives of this research are to understand the operation of purse seines, analyze the influence of sea surface temperature and chlorophyll-a on purse seine catches, and determine the level of suitability of fishing areas with maps of potential fishing zones. To answer the objective, non-experimental based applied research was conducted with a case study approach, survey method and correlation approach to determine the effect of chlorophyll-a and sea surface temperature variables on catches. The tools used hardware, namely laptops and computers with the software needed research are SEADAS, SAGA, QGIS, Ms. Excel and SPSS. Data on the distribution of and chlorophyll-a used in the study are data from Aqua MODIS level 1x1 kilometer resolution downloaded on the page https://oceancolor.gsfc.nasa.gov/.
As for the results of statistical testing, there is an influence of chlorophyll-a and sea surface temperature simultaneously and partially on the catch by giving an influence of 73.6%. With the distribution of chlorophyll-a concentration and sea surface temperature in the KM fishing area. The level of conformity of fishing areas with maps of potential fishing zones on fishing trips from December 2020 to April 2021 reached a percentage of conformity of 55.93% with a total catch of 209,360 Kg, indicating the selection of fishing areas by conventional skippers on KM XXX compared to the forecast of fishing areas using aqua MODIS satellite imagery remote sensing technology can be categorized as good even though it only relies on experience and information about fishing areas from other vessels.
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IMADE, Odaro S., et Faith I. AKINNIBOSUN. « The risk mitigation indices associated with some risk mitigation protocols performed on contaminated aqua-cultured catfish (Clarias gariepinus) ». Notulae Scientia Biologicae 12, no 1 (31 mars 2020) : 172–83. http://dx.doi.org/10.15835/nsb12110633.
Texte intégralRésumé :
The present research quantified the risk mitigation indices associated with some risk mitigation protocols practiced by humans in Nigeria to mitigate the baseline risk of illness that were associated with Clarias gariepinus contaminated with multidrug-resistant AmpC beta-lactamase-producing Enterobacter cloacae pathogen. Identification of the multidrug-resistant AmpC beta-lactamase-producing E. cloacae pathogen was performed with phenotypic and molecular methods. The United States FDA-iRisk stochastic software quantified the baseline and residual risk of illness associated with the contamination and cross-contamination routes of the C. gariepinus chain. The fresh adult C. gariepinus was contaminated with the multidrug-resistant E. cloacae pathogen (median concentration = 4.49 CFU g-1), but this was significantly reduced by the risk mitigation protocols practiced by the human consumers. The risk mitigation practices of human consumers resulted in a risk mitigation index of 0.92, which was equivalent to a 92% reduction in the baseline risk of illness (baseline risk of illness = 7.58 × 10-4; residual risk of illness = 5.9 × 10-5). In spite of the significant risk mitigation, inducible AmpC beta-lactamase resistance genes was still found in the residual multidrug-resistant Enterobacter cloacae pathogen, which survived the inadequate risk mitigation protocols that accounted for 8% residual risk of illness.
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Klimowicz, Alexander, Paola Neri, Andrew Belch, Michelle Dean, Li Ren, Kathy Gratton, Jiri Slaby et al. « High Cereblon Protein Expression Correlates with Improved Response and Survival in Myeloma Patients Treated with Lenalidomide ». Blood 120, no 21 (16 novembre 2012) : 931. http://dx.doi.org/10.1182/blood.v120.21.931.931.
Texte intégralRésumé :
Abstract Abstract 931 Background: Cereblon (CRBN), an adaptor protein of the Cul4A-DDB1-ROC1 ubiquitin E3 ligase complex was recently identified as a primary target of thalidomide teratogenicity and as essential requirement for IMiDs mediated cytotoxicity in multiple myeloma (MM) cells in vitro (Zhu YX et al, 2011). We have undertaken the current study to confirm the association between cereblon protein expression and the clinical response to lenalidomide. Methods: We constructed tissue microarrays (TMA) using bone marrow biopsies collected immediately prior to initiating therapy with lenalidomide. Fluorescence immunohistochemistry was performed using a polyclonal anti-CRBN antibody (HDA045910, Sigma-Aldrich) at a dilution of 1:4000, with 3 minutes of antigen retrieval at 121°C in a decloaking chamber in a pH=9 Tris/EDTA-based buffer (S2367, Dako). Tissue microarray slides were scanned on a HistoRx PM-2000 and digital images where analyzed with AQUA analysis software to determine the CRBN AQUA scores (protein expression = AQUA scores defined as the average CRBN pixel intensity within CD138 positive cells). CRBN AQUA scores where standardized on the Z-distribution (Z= X-μ/σ). The clinical parameters, response criteria and survival outcomes (PFS and OS) of these patients were defined according to the international uniform response criteria. The Kaplan-Meier method was used to estimate OS and PFS. Multivariate analysis was performed using the Cox regression method. Results: 42 patients with newly diagnosed (71.4%) or relapsed / refractory (28.6%) MM patients treated with lenalidomide and dexamethasone (MM009, MM016 or MM020 trials) and available pre-treatment bone marrow biopsies were included in this analysis. In this cohort, median age was 68 (range 46–88), median Hb 114 g/L (range 77–145), median Calcium 2.35 mmol/L (range 1.62–2.82), median creatinine 91.5 μmoles/L (range 44–500), high LDH in 21.4%, median albumin 35.5 g/L (range 23–47), β2 microglobulin 4.66 mg/L (range 1.2–35.19), ISS I 19%, II 35.7% and III 45.3% and high-risk cytogenetics (del17p13, t(4;14) by FISH) in 26.6%. Response CR/nCR was observed in 13/42 (31 %), PR in 21/42 (50%), MR in 4/42 (9.5%) and PD in 4/42 (9.5%). With a median follow-up of 22.4 months (range 0.72–65.6), 28/42 (67%) progressed with mPFS 19.53 months (95% CI 8.57–30.496) and mOS 28.733 months (95% CI 24.061–33.406). Cereblon expression or AQUA normalized Z scores ranged from -1.419 to 3.895. Kaplan Meier log-rank survival analysis were generated based on CRBN normalized AQUA Z scores with the bottom (Q4) and top quartiles (Q1-3) defined as CRBN-low or CRBN-high groups respectively. PFS was significantly shorter in CRBN-low (5.633 months) versus CRBN-high (19.733 months; p= 0.008). Similarly, OS was also reduced in CRBN-low patients (11.4 versus 30.467 months; p=0.033). In univariate Cox regression analysis, cereblon protein expression was significantly associated with PFS (HR 0.322; 95% CI 0.133–0.780; p=0.012) and OS (HR 0.323; 95% CI 0.108–0.970; p=0.044). Cereblon expression remained an independent predictor of PFS (HR 0.161; p=0.01) but not for OS when ISS and cytogenetics were included in multivariate regression analysis. In the CRBN-high group only 5/31 patients (16.1%), compared to 54.5% (6/11) in the CRBN-low group, failed to respond (≤MR) to lenalidomide. Similar to the protein tissue array analysis, low CRBN mRNA was also significantly associated with shorter PFS (p=0.008) in a chip microarray analysis of CRBN expression (Affymetrix probe 222533_at) in a cohort of 32 MM patients treated with lenalidomide and dexamethasone. Cereblon protein expression (AQUA normalized Z score) significantly correlated with CRBN mRNA microarray values (Affymetrix probe 222533_at) in 17 patients with matching protein and mRNA samples (Spearman's rho 0.417; p= 0.048). In contrast, and confirming the specificity of cereblon for response to IMiDs, no association between cereblon protein expression and response to therapy or survival outcomes (PFS/OS) was observed in a independent cohort of newly diagnosed MM patients (n=37) treated with bortezomib induction therapy and ASCT. Conclusion: Using an automated, observer-independent and fully quantitative approach, our studies confirm the association between cereblon protein expression and response to lenalidomide in MM. Disclosures: Neri: Johnson ans Johnson: Research Funding. Bahlis:Johnson and Johnson: Honoraria, Research Funding; Celgene: Honoraria.
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Muhammad Fakhrurazi Md Yunos, Wan Mariam Wan Muda et Nur Farizan Munajat. « Techno-Economic Feasibility Study of An Off-Grid Hybrid Power System for An Aqua-Tourism Resort in Terengganu, Malaysia ». Universiti Malaysia Terengganu Journal of Undergraduate Research 1, no 2 (30 avril 2019) : 103–10. http://dx.doi.org/10.46754/umtjur.v1i2.72.
Texte intégralRésumé :
This study focused on feasibility analysis of hybrid electrification system for an aqua-tourism resort located remotely from the grid connection in Terengganu. There were four standalone systems used in this study: diesel/PV/biomass/battery, diesel/PV/battery, biomass/diesel/battery, and diesel only. The design and analysis of these systems were done using Hybrid Optimization of Multiple Energy Resources (HOMER) software. The results showed that the diesel/PV/battery system was the optimum solution in terms of net present cost (NPC) and cost of energy (COE). This system comprises 20 % of PV penetration with NPC and COE of USD 57,823 (RM 241, 729.90) and 0.428 USD/kWh (1.79 RM/kWh), respectively. Meanwhile, the diesel/PV/biomass/battery system with NPC of USD 65,388 (RM 273, 355.49) and COE of 0.484 USD/kWh (2.02 RM/kWh) was found to be the best among all systems in terms of greenhouse emissions. This system was able to reduce almost 70 % of carbon dioxide if compared with diesel only system and about 15 % lower than the diesel/PV/battery system with a renewable energy fraction of 44 %.
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Ebrahimnataj Tiji, A., A. Ramiar et MR Ebrahimnataj. « Investigation of the launch time of NH3-H2O absorption chiller under different working condition ». Proceedings of the Institution of Mechanical Engineers, Part E : Journal of Process Mechanical Engineering 234, no 1 (9 octobre 2019) : 15–28. http://dx.doi.org/10.1177/0954408919879871.
Texte intégralRésumé :
This study deals with the launch time of main characteristic of NH3-H 2O absorption chiller under different working condition. The aim of this work was about to scrutinize a lumped-parameter dynamic simulation of aqua-ammonia absorption chiller in addition to investigating the effect of subcooled liquid at condenser/absorber outlet on absorption chiller’s key parameters launch time. Also, the effect of ambient temperature on absorption chiller’s key parameters’ launch time is studied. In order to determine the thermodynamic properties of the working fluid, the Engineering Equation Solver software is applied. By making a link between Engineering Equation Solver and MATLAB software, the differential equations are solved in the MATLAB software environment by fourth-order Rung–Kutta method. According to the result, increase of the sub-cool liquid temperature at condenser outlet has no effect on absorption chiller’s key parameters’ launch time. Besides, 10 ℃-increase in subcooled liquid temperature at the absorber outlet leads to decreasing the launch time of the coefficient of performance to 19.35%. The result shows that if cooling tower temperature goes from 22 ℃ to 30 ℃, launch time of the coefficient of performance rises by 10.43%, while evaporator heat transfer rate falls by 30%. To validate the dynamic model, the results deduced from numerical simulation are compared with peer steady–state results.
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Tupamahu, Frangky, et Andi Mariani. « Analisis Pengembangan Aplikasi Trilingual Bahasa Indonesia, Gorontalo dan Suwawa Berbasis Andorid ». Jurnal Technopreneur (JTech) 8, no 2 (24 novembre 2020) : 90–96. http://dx.doi.org/10.30869/jtech.v8i2.618.
Texte intégralRésumé :
Dengan adanya berbagai aplikasi bilingual mulai dari versi pertama hingga yang terbaru (Ibrahim 2015), maka perlu dilakukan pengukuran dan analisis lebih lanjut. Salah satu analisis yang penting dilakukan adalah analisis tingkat efektivitas dari aplikasi yang dikembangkan. Oleh karena itu, dalam penelitian ini dilakukan analisis tingkat efektivitas yang bertujuan untuk mengetahui kualitas aplikasi “Bilingual Indonesia, Gorontalo, Suwawa” yang dikembangkan oleh (Ibrahim 2015) dari sisi performance efficiency, functional suitability, portability, dan usability. Berdasarkan penelitian yang telah dilakukan dalam mengembangkan perangkat lunak aplikasi "Trilingual Bahasa Indonesia, Gorontalo dan Suwawa", Setelah melalui serangkaian proses pengujian, aplikasi "Jelajah Museum Jogha" dengan hasil: 1) performance efficiency sebesar 1,170 detik dengan predikat "sangat puas", 2) functional suitability sebesar 100%, sesuai dengan standar kualitas dari AQuA, 3) portability sebesar 100% dengan predikat "sangat tinggi", dan 4) usability sebesar 1607 dengan predikat "sangat layak". Hasil pengujian aplikasi "Trilingual Bahasa Indonesia, Gorontalo dan Suwawa" menunjukkan bahwa aplikasi ini telah memenuhi aspek kualitas performance efficiency, functional suitability, portability, dan usability sesuai dengan kaidah software software quality. adapun masukan dan saran untuk pengembangan penelitian serupa ke depan yaitu analisis kualitas perlu dilakukan untuk aspek yang lain sehingga kualitas aplikasi dapat diamati dengan lebih lengkap.
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Klimowicz, Alex, Paola Neri, Adnan Mansoor, Anthony Magliocco, Douglas A. Stewart et Nizar J. Bahlis. « An Automated and Quantitative Protein Expression-Based Classification System to Identify High Risk Multiple Myeloma Patients ». Blood 112, no 11 (16 novembre 2008) : 735. http://dx.doi.org/10.1182/blood.v112.11.735.735.
Texte intégralRésumé :
Abstract Background: Autologous stem cell transplantation (ASCT) has dramatically improved the survival of myeloma patients; however, this approach has significant toxicities and nearly 25% of MM patients progress within one year from their transplant. While gene expression profiling-based (GEP) molecular classification has permitted the identification of unresponsive high-risk patients, these approaches have proven too costly and complex to translate into clinical practice. Less expensive and more readily available methods are needed clinically to identify, at the time of diagnosis, MM patients who may benefit from more aggressive or experimental therapies. While protein-based tissue arrays offer such alternative, biases introduced by the “observer-dependent” scoring methods have limited their wide applicability. Methods: We have designed a simplified, fully automated and quantitative protein expression based-classification system that will allow us to accurately predict survival post ASCT in a cost effective and “observer-independent” manner. We constructed tissue microarrays using diagnostic bone marrow biopsies of 82 newly diagnosed MM patients uniformly treated with a dexamethasone based induction regimen and frontline ASCT. Using the HistoRx PM-2000 quantitative immunohistochemistry platform, coupled with the AQUA analysis software, we have examined the expression of the following proteins: FGFR3 which is associated with t(4;14), cyclin B2 and Ki-67 which are associated with cellular proliferation, TACI which is associated with maf deregulation, and phospho-Y705 STAT3 and p65NF-κB, which are associated with myeloma cell growth and survival. For FGFR3, patients were divided into FGFR3 positive and negative groups based on hierarchical clustering of their AQUA score. For all other proteins examined, based on AQUA scores, the top quartiles or quintiles of patients were classified as high expression groups. Based on the univariate analysis, patients were further classified as “High Risk” MM if they had been identified as high expressers of either TACI, p65NF-κB or FGFR3. The Kaplan-Meier method was used to estimate time to progression and overall survival. Multivariate analysis was performed using the Cox regression method. Results: 82 patients were included in this study. In univariate analysis, FGFR3 and p65NF-κB expression were associated with significantly shorter TTP (p=0.018 and p=0.009) but not OS (p=0.365 and p=0.104). TACI expression levels predicted for worse OS (p=0.039) but not TTP (p=0.384). High expression of Ki67 or phospho-Y705 STAT3 did not affect survival. Of the 82 cases, 67 were included in the multivariate analysis since they had AQUA scores available for all markers: 26 (38.8%) were considered as High Risk by their AQUA scores and had significantly shorter TTP (p=0.014) and OS (p=0.006) compared to the Low Risk group. The median TTP for the Low and High Risk groups was 2.9 years and 1.9 years, respectively. The 5-years estimates for OS were 60.6% for the High Risk group versus 83.5% for the Low Risk group. Multivariate analysis was performed using del13q and our risk group classification as variables. Both our risk group classification and del13q were independent predictors for TTP, having 2.4 and 2.3 greater risk of relapse, respectively. Our risk group classification was the only independent predictor of OS with the High Risk group having a 5.9 fold greater risk of death. Conclusions: We have found that the expression of FGFR3, TACI, and p65NF-κB, in an automated and fully quantitative tissue-based array, is a powerful predictor of survival post-ASCT in MM and eliminates the “observer-dependent” bias of scoring TMAs. A validation of this “High Risk” TMA based signature is currently underway in larger and independent cohorts. Figure Figure
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Vlasák, P., et B. Čerbák. « BIM, STRUCTURAL ANALYSIS AND COMMUNICATION USING COMMON DATA ENVIRONMENT (CDE) IN THE FIELD OF WATER MANAGEMENT ». ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-5/W2 (20 septembre 2019) : 93–94. http://dx.doi.org/10.5194/isprs-archives-xlii-5-w2-93-2019.
Texte intégralRésumé :
<p><strong>Abstract.</strong> Presentation consists of three parts, which are interconnected:</p><ol><li>BIM application for plants treatment and other complicated structures in the field of water management</li><li>Statics of water management structures in the BIM environment</li><li>Application of Common Data Environment (CDE) for water management</li></ol><p>Two areas – statics and water management technology – are crucial for water management structures. Speaking of statics, we mean the statics of reinforced concrete structures. In our company AQUA PROCON s.r.o. we deal with this area comprehensively, ie. from the initial design in the BIM architectural and construction software, through transferring a load-bearing model to BIM software for 3D reinforcement modelling to evaluating model in static design software. All communication is held in Common Data Environment (CDE). Within this environment, a three-way communication is carried out by the designer, contractor and contracting authority. Part of our performance is also above-standard support for reinforced concrete contractors. We provide models of reinforced concrete structures in LOD 400. The use of Common Data Environment (CDE) does not concern only statics, but also the work of all other professions and project participants. Our activities and workflows are based on the philosophy of OPENBIM and IFC.</p>
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Martins, Alécio Perini, et Roberto Rosa. « ESTIMATIVA DO SALDO DE RADIAÇÃO NA SUPERFÍCIE UTILIZANDO IMAGENS DO SENSOR MODIS/AQUA E O ALGORITMO SEBAL : ESTUDO DE CASO PARA A BACIA DO RIO PARANAÍBA, BRASIL ». Estudos Geográficos : Revista Eletrônica de Geografia 18, no 1 (7 mai 2020) : 1–23. http://dx.doi.org/10.5016/estgeo.v18i0.14981.
Texte intégralRésumé :
O SEBAL (Surface Energy Balance Algorithms for Land) tem se mostrado ideal para a realização de estimativas de saldo de radiação, especialmente para regiões com grande extensão territorial. O estudo apresentado tem como objetivo demonstrar as etapas de implementação do SEBAL para estimativa de saldo de radiação utilizando imagens de sensoriamento remoto e técnicas de geoprocessamento. Foram utilizadas imagens do sensor MODIS/AQUA do ano de 2013 e ferramentas do software ArcGis 10.1® para implementar o modelo, que apontou valores médios de 865 W/m² para o saldo de radiação, com maiores valores registrados durante o período seco. A correlação mais forte foi identificada em relação aos valores de albedo, concluindo que mudanças no uso da terra podem alterar significativamente os valores de saldo de radiação e, por consequência, de fluxos de calor no solo e evapotranspiração.
Palavras-chave: Modelagem, sensoriamento remoto, saldo de radiação.
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Wulandari, Wulandari, et Rosa Afriliani. « PEMANFAATAN MOBILE COMMERCE GUNA MENINGKATKAN PENJUALAN UMKM NARESCRAFT DI DESA TULUNG AGUNG ». Jurnal Signaling 10, no 1 (19 avril 2021) : 18. http://dx.doi.org/10.56327/signaling.v10i1.1007.
Texte intégralRésumé :
Narescraft UMKM is a business that produces various kinds of handicraft products made of talikur and acrylic. This UMKM is located in Tulung Agung Village, Kec. Gadingrejo, Kab. Pringsewu. This UMKM produces items such as bags made of talikur, decorative flowers from acrylic, tissue boxes and aqua baskets, and many others. This research discusses the use of m-commerce at Narecraft UMKM to increase product sales. One form of constraint experienced by Narescraft UMKM is product marketing that has not been widespread due to a lack of knowledge about current technological developments. One of the benefits of this research is to make it easier. consumers to get goods according to what they want easily. This research designs a website as a means of promotion or sale of products from UMKM so that products from UMKM can be widely known by the outside community. Researchers design a website using mobile software. a free application/software that can make the best free responsive website designs for Windows, Mac, and Android. Researchers use the implementation of m-commerce with websites on UMKM so that they can help reduce costs and can convey detailed information. This research hopes to help increase sales of these handicraft products.
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Omelchuk, S. T., O. P. Vavrinevych, А. М. Antonenko, А. А. Borysenko, V. G. Bardov et I. P. Koziarin. « HYGIENIC ASSESSMENT OF PROFESSIONAL RISK FOR EMPLOYEES WHEN APPLICATING PESTICIDES FOR PROTECTION OF POTATOES ». Medical Science of Ukraine (MSU) 14, no 3-4 (30 novembre 2018) : 95–102. http://dx.doi.org/10.32345/2664-4738.3-4.2018.13.
Texte intégralRésumé :
Relevance. Evaluation of occupational risk in the application of various groups and classes of pesticides is an actual problem, since it is known that chemical plant protection products can cause both acute poisoning and long-term effects of the action, including neurotoxic effects if the application rules are not followed. Objective of the work was a hygienic assessment of the working conditions and occupational risk of workers when using pesticides Ampligo 150 ZC, Banjo Forte, SC, Blockbuster, CE, Zero, CE, Cloti-200, SC, Mistral Top, SC, Mistral, WG, Paritet, SC, Remontal, WG, Stomp Aqua, SC, T-2, SC, Fronda, SC on potatoes to substantiate the regulations for their safe application. Materials and methods. The occupational risk assessment was carried out in accordance with the methodological recommendations proposed by the specialists of the L.I. Medvedia Scientific Center for Preventive Toxicology, Food and Chemical Safety. Statistical processing of the results was performed using the IBM SPSS Statistics Base v.22 and MS Excel software licensed statistical package (version 12.0.6425.1000, 2007). Results. It has been established that in real conditions of potatoes treatment with Ampligo 150 ZC, Banjo Forte, SC, Blockbuster, CE, Zero, CE, Cloti-200, SC, Mistral Top, SC, Mistral, WG, Paritet, SC, Remontal, WG, Stomp Aqua, SC, T-2, SC, Fronda, SC, while observing the recommended agrotechnical and hygienic regulations for safe application, there is no excess of hygienic standards in the working area air and it is proved that the Hygienic regulations of studied formulations safe application have been substantiated. Conclusion. A statistical analysis of the results showed that the magnitude of inhalation risk was significantly higher for tractor drivers than for refuellers (p<0.05). The value of the combined complex risk of the studied formulations application for refuellers was significantly lower than that for the tractor drivers.
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Rodriguez, Jorge Luis Lozano, Juan Carlos Chang Chang Fun, Oscar Enrique Tang Cruz, Eusebio Idelmo Cisneros Tarmeño, Hernán Oscar Cortez Gutierrez et Milton Milciades Cortez Gutierrez. « Evolución temporal de humedales de la región ayacucho, mediante imágenes modis periodo 2002-2013 ». South Florida Journal of Development 2, no 4 (18 septembre 2021) : 5971–81. http://dx.doi.org/10.46932/sfjdv2n4-076.
Texte intégralRésumé :
La presente investigación responde a la necesidad de caracterizar la evolución temporal de los humedales mediante imágenes satelitales, su procesamiento, análisis, interpretación y discusión, pues los cambios climáticos hacen necesario tener en cuenta que son ecosistemas importantes de gran interés por las diferentes funciones que realizan. Las imágenes satelitales del satélite TERRA del sensor AQUA, fueron procesadas con el software ENVI y se determinó el parámetro del Índice de Vegetación de Diferencia Normalizada (NDVI), más el uso del Google Earth nos permitió a grandes rasgos discriminar entre zonas de vegetación, suelo desnudo, agua y la variación en el tiempo de los Humedales de la Región de Ayacucho. La teledetección nos ofrece grandes progresos en el conocimiento de la naturaleza, aunque es necesario un mayor rigor científico en la interpretación de los resultados y tener como objetivo eliminar los efectos ocasionados por la variabilidad en las condiciones de captación, distorsión provocada por la atmósfera, y la influencia de parámetros radiométricos geométricos tales como la radiancia, reflectancia, emisividad, posición del Sol, pendiente, y altitud. Por lo cual esperamos que contribuya al conocimiento de datos importantes quedando pendiente estimar otros parámetros como la humedad de suelos, evaporación, etc. a través de la cual se precisará y reorientar la tecnología propuesta.
images, processing, analysis, interpretation and discussion, as the climate changes make it necessary to consider that are important ecosystems of great interest in the different functions performed. Satellite images of the TERRA satellite AQUA sensor were processed with ENVI software and parameters Index Normalized Difference Vegetation (NDVI) was determined, plus the use of Google Earth allowed us to broadly discriminate between areas of vegetation, soil nude, water and variation in time of Wetlands in the region of Ayacucho. Remote sensing offers great progress in the knowledge of nature, although a greater scientific rigor in the interpretation of the results is necessary and aim to eliminate the effects caused by the variability in the conditions of recruitment, distortion caused by the atmosphere, and the influence of geometric radiometric parameters such as radiance, reflectance, emissivity, position of the Sun, slope, and altitude. So we hope to contribute to the knowledge of important data pending estimate other parameters such as soil moisture, evaporation, etc. through which shall specify and redirect the proposed technology.
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Yves.B., BEUGREK, MOBIOA BriceH., KOUADIOM . Jeanne, KASSI A. Jean-Baptiste et DJAGOUA E. M. Valere. « Spatio-Temporal Study of Phytoplankton Groups from Inherent Optical Properties (Iops) in The Ivorian Marine Coastline from 2010 To 2020 ». International Journal of Advances in Scientific Research and Engineering 09, no 06 (2023) : 36–46. http://dx.doi.org/10.31695/ijasre.2023.9.6.5.
Texte intégralRésumé :
Today global warming affects all environments including coastal marine environments. Climate change also affects the development and proliferation of phytoplankton groups often leading to the massive production of phytoplankton groups in marine waters. Itis with this in mind that the study on the determination of phytoplankton groups from optical properties in Ivorian marine waters was initiated.This study showed a great diversity of phytoplankton in the Ivorian marine domain during the years 2010 and 2020. The data used in these studies are geospatial data (remote sensing) of the optical properties of theoceans, in particular the IOPs (inherent optical properties). These are the fusion data from the various SeaWiFS, MODIS, MERIS, VIIRS sensors from 2010 to 2020 from the various OrbView 2, NOAA, ENVISAT and AQUA satellites, in particular the absorption coefficient data for dissolved and detrital matter at 443 nm (adg ), phytoplankton absorption coefficient data at 443 nm (aph), and dissolved and detrital particulate backscatter coefficient data at 443 nm (bbp).For the processing of these data the pixel-oriented classification method was used for the identification of phytoplankton groups. The SeaDAS v 7.4 software, allowed to process and analyze the data and the Envi 5.3 software allowed to perform the data classification. Thevalues of inherent optical properties (IOPs) were obtained as well as the spatial distribution of phytoplankton groups, thus allowing the production of maps of IOPs and the production of spatio-temporal distribution maps of cyanobacteria and diatoms.
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Eze, Nnamdi, Christine H. Chung, Veronique Neumeister, Teresa Sandoval-Schaefer, Ju-Whei Lee et Barbara Burtness. « PTEN loss as a predictive biomarker in head and neck squamous cell cancer (HNSCC) patients treated with cetuximab (C). » Journal of Clinical Oncology 35, no 15_suppl (20 mai 2017) : e17520-e17520. http://dx.doi.org/10.1200/jco.2017.35.15_suppl.e17520.
Texte intégralRésumé :
e17520 Background: No biomarker of C resistance has been identified in HNSCC. PTEN loss is present in approximately 30% of HNSCC. Biomarker analysis of the E5397 study suggested that addition of C to cisplatin in R/M HNSCC improves PFS in PTEN high/PIK3CA wild type patients but not those with PTEN loss or PIK3CA mutation. We hypothesized that PTEN testing may aid patient (pt.) selection for C therapy in HNSCC. Methods: MCC15780 was a phase II randomized trial of C plus sorafenib or C plus placebo in R/M HNSCC. 52/56 pts. in this study received C. PTEN analysis using AQUA as previously described was performed on tumor from 38 pts. Automated image capture was performed with HistoRx PM-2000 using the AQUAsition software. AQUA PTEN cut off determined as 1177 based on the first tertile.Fisher’s exact test used to compare low and high expression group. Event-time distributions estimated by Kaplan-Meier and compared using log-rank. Stratified Cox proportional hazards models used to estimate hazard ratios (HR) and test for significance for OS and PFS. All p-values are two-sided. A level of p < 0.05 is considered statistically significant. Results: 12/37 (32%) tumors were PTEN low. There was statistically significant improvement in PFS in PTEN high tumors compared to PTEN low tumors (HR (high/low) =0.33, 95% CI= (0.14, 0.75), p=0.008); and this remains significant after adjusting for age, sex, race, and ethnicity (HR (high/low) =0.27, 95% CI= (0.11, 0.67), p=0.004). Conclusions: PFS is significantly longer in PTEN high tumors compared to PTEN low tumors (HR=0.33, 95% CI= (0.14-0.75), p=0.008) in patients with R/M HNSCC treated with C. This finding remains significant after adjusting for age, sex, race, and ethnicity (HR=0.27, 95% CI= (0.11-0.67), p=0.004).This warrants PTEN analysis of specimens from larger cetuximab-based RCT. [Table: see text]
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Santiari, Made, Yohana Ivana Kedang et Feliksitas Angel Masing. « Retention Basin Water Quality in Tubuhue Urban Village North Central East Regency ». JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS 8, no 3 (25 novembre 2022) : 703–10. http://dx.doi.org/10.36987/jpbn.v8i3.3211.
Texte intégralRésumé :
The community carries out bathing and washing activities directly in the retention basin which can cause polluted water. Water quality checks need to be carried out before treatment. The purpose of this study was to determine the quality of water in the retention basin. Determination of the sampling location by purposive sampling. Sampling was carried out once in August 2021. Parameter measurements were carried out in the field and in the laboratory. The measurement results are compared with the quality standards listed in the Regulation of the Minister of Health of the Republic of Indonesia Number 32 of 2017 concerning Environmental Health Quality standards and Water Health Requirements for Sanitary Hygiene, Swimming Pools, Solus Per Aqua and Public Baths. A parameter that passed the quality standard was E-Coli while pH, hardness, nitrate, temperature, and TDS still met the quality standards. Retention basin water in Tubuhue Village seen from the parameters of temperature, pH, TDS, hardness, and nitrate can be used for sanitation hygiene purposes, but judging from the parameter E-Coli cannot be used for sanitary hygiene purposes.
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Kadochnikov, A. A. « Application of geoinformation technologies for arranging a satellite monitoring system ». Geodesy and Cartography 943, no 1 (20 février 2019) : 110–18. http://dx.doi.org/10.22389/0016-7126-2019-943-1-110-118.
Texte intégralRésumé :
Today, remote sensing data are an important source of operational information about the environment for thematic GIS, this data can be used for the development of water, forestry and agriculture management, in the ecology and nature management, with territorial planning, etc. To solve the problem of ensuring the effective use of the space activities’results in the Krasnoyarsk Territory a United Regional Remote Sensing Center was created. On the basis of the Center, a new satellite receiving complex of FRC KSC SB RAS was put into operation. It is currently receiving satellite data from TERRA, AQUA, Suomi NPP and FENG-YUN satellites. Within the framework in cooperation with the Siberian Regional Center for Remote Sensing the Earth, an archive of satellite data from domestic Resource-P and Meteor-M2 satellites was created. The work considers some features of softwaredevelopment and technological support tools for loading, processing and publishing remote sensing data. The product is created in the service-oriented paradigm based on geoportal technologies and interactive web-cartography. The focus in this article is paid to the peculiarities of implementing the software components of the web GIS, the efficient processing and presentation of geospatial data.
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Silva, Mayara Gomes da, et Gabriele do Nascimento Furtado. « Análise espacial dos focos de calor no município de São Félix do Xingu, Estado do Pará, Brasil ». Research, Society and Development 9, no 11 (4 décembre 2020) : e81391110331. http://dx.doi.org/10.33448/rsd-v9i11.10331.
Texte intégralRésumé :
O uso do fogo pelas práticas agrícolas e pecuárias, as atividades antrópicas, e o desmatamento são os principais fatores pelos altos índices de focos de queimada na região amazônica, atividade que causa grandes prejuízos ambientais, biológicos, e até mesmo de saúde pública. Nesse contexto, o objetivo do trabalho foi quantificar e analisar os focos de calor no município de são Félix do Xingu, entre os anos de 2009 e 2018, utilizando dados do Instituto Nacional de Pesquisas Espaciais (INPE). Com dados obtidos do satélite Aqua – T, equipado com o sensor Moderate Resolution Imaging Spectroradiometer (MODIS), e analisados no software ArcGis 10.5, utilizando o Sistema de Coordenadas Geográficas e datum SIRGAS 2000, através do processo Kernel Density para densidade e do método Quantile Method. A metodologia utilizada permitiu encontrar 34.685 focos de calor no município durante o período analisado, desses, foi observado picos de incidência nos anos de 2010 e 2017, e os meses de julho a outubro como o período de maior ocorrência. Dessa forma, o estudo mostrou-se relevante na identificação e análise dos focos de calor na área, podendo auxiliar no combate e fiscalização de queimadas.
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Ekaputra, Mandala, Herman Hamdani, Ibnu Bangkit B. Suryadi et Izza Mahdiana Apriliani. « PENENTUAN DAERAH PENANGKAPAN POTENSIAL IKAN TONGKOL (Euthynnus sp.) BERDASARKAN CITRA SATELIT KLOROFIL-A DI PALABUHANRATU, JAWA BARAT ». ALBACORE Jurnal Penelitian Perikanan Laut 3, no 2 (15 janvier 2020) : 169–78. http://dx.doi.org/10.29244/core.3.2.169-178.
Texte intégralRésumé :
Sumberdaya ikan tongkol (Euthynnus sp.) adalah salah satu sumberdaya perikanan paling dominan dan bernilai ekonomis yang cukup tinggi dan juga merupakan hasil perikanan yang menjadi target tangkapan nelayan. Salah satu parameter osenografis yang dapat digunakan untuk mengetahui informasi tersebut adalah klorofil-a. Pengukuran klorofil-a di suatu perairan dapat dilakukan dengan menggunakan metode langsung maupun metode tidak langsung (dengan menggunakan citra satelit). Salah satu satelit penginderaan jauh yang dapat mendeteksi dan menunjukkan klorofil-a adalah satelit Aqua-MODIS. Tujuan dari penelitian ini adalah untuk menentukan hubungan antara sebaran klorofil-a dengan hasil tangkapan dan menentukan daerah penangkapan potensial ikan tongkol di perairan Palabuhanratu. Metode penelitian yang digunakan yaitu dengan metode analisis spasial. Data spasial primer di perairan Palabuhanratu berupa data klorofil-a, dan data produksi penangkapan ikan tongkol selama 5 tahun terakhir. Data primer tersebut diolah dengan menggunakan software dan dianalisis spasial secara deskriptif. Hasil penelitian ini menunjukkan tingkat hubungan korelasi sangat lemah dengan nilai koefisien korelasi (r) yaitu 0,0811 dengan koefisien determinasinya sebesar 0,066. Berdasarkan dari hasil penilaian kategori DPI, terdapat dua titik koordinat yang termasuk kedalam kategori DPI potensial.
Kata kunci: citra satelit, daerah penangkapan potensial, ikan tongkol, klorofil-A
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Abdul Manan, Sony Angga Satrya,. « Prakiraan Kesuburan Perairan Bali Dari Citra Satelit [Forecast Fertility Bali Waters From Satellite Imagery] ». Jurnal Ilmiah Perikanan dan Kelautan 4, no 1 (24 janvier 2019) : 81. http://dx.doi.org/10.20473/jipk.v4i1.11589.
Texte intégralRésumé :
Abstract Aplication Ocean Remote Sensing technology to many use for field fisheries, once use this technology in forecast fertility water. The aim of this study was to determine the feasibility of Bali coastal area for cage of pearl oyster culture. The method used is a descriptive method of data collection. Satellite image processing activities Aqua/Terra Modis starting with the collection of satellite image data from the database NASA via OceanColor Web site, the selection of a clean image data, and than download of satellite images. The first stages of image data processing are used software ENVI 4.7, with procedures are coloring the image, limiting the minimum and maximum temperatures and sea surface chlorophyll-a, and classifiying of the image based on the value of sea surface temperature. Sea surface temperature parameter determine the location of the cage of pearl oysters (Pinctada maxima) culture. Suitability of the location of the cage of pearl oyster culture on Bali coastal area, at coordinates 8° 33' 00.97 " - 8° 42' 05.30" South Latitude and 115° 18' 03.40 " - 115° 39 ' 03.21" East Longitude. Based on geographical, that the location in the southeastern Bali coastal area and on the northern area of Nusa Pennida island.
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Suhendar, Anang, Aldo Brayan Sinaga, Ari Firmansyah, Supriyadi Supriyadi et Wyke Kusmasari. « Analisis Risiko Musculoskeletal Disorders (MSDs) pada Pekerjaan Pengangkutan Galon Air Mineral ». Jurnal INTECH Teknik Industri Universitas Serang Raya 9, no 1 (1 juin 2023) : 71–78. http://dx.doi.org/10.30656/intech.v9i1.5641.
Texte intégralRésumé :
Kegiatan pengangkutan galon air mineral di AQUA Home Service Cilegon masih dilakukan secara manual tanpa menggunakan alat bantu. Pada saat pekerja menangani galon-galon air, masih terdapat postur kerja yang berisiko. Hal ini menyebabkan beberapa pekerja mengalami keluhan Musculoskeletal Disorders (MSDs). Adapun tujuan dari penelitian ini yaitu mengidentifikasi prevalensi keluhan MSDs, mengetahui tingkat risiko postur kerja, dan memberikan usulan perbaikan yang berpotensi menurunkan risiko MSDs. Pengukuran tingkat risiko postur kerja menggunakan metode RULA dan REBA serta diolah dengan bantuan software ErgoFellow. Dari hasil kuesioner Nordic yang dibagikan pada total empat pekerja, diketahui bahwa keluhan pada punggung bawah dan bahu dirasakan oleh semua pekerja. Hasil penilaian risiko postur kerja pada proses pengangkatan dan membawa galon, menunjukkan perlunya perubahan pada postur kerja (skor RULA 7 (risiko tinggi); skor REBA 8 (risiko tinggi)). Perbaikan yang diusulkan yaitu alat bantu angkut galon berupa troli yang sesuai dengan ukuran antropometri sehingga nyaman digunakan, memperbaiki postur kerja, dan berpotensi menurunkan MSDs. Hasil simulasi menggunakan CATIA V5R21, menunjukkan bahwa penggunaan alat bantu angkut galon menurunkan level risiko RULA dari 7 ke 3 (risiko rendah). Rancangan alat bantu galon yang diusulkan diharapkan dapat diimplementasikan di lapangan dan membantu menurunkan risiko MSDs.
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Kamsinarani, Kamsinarani, Masyahoro Masyahoro et Alimudin Laapo. « Estimasi Fishing Ground berdasarkan sebaran Suhu Permukaan Laut dan Klorofil-a di Perairan Teluk Tolo ». Mitra Sains 9, no 1 (31 mars 2021) : 62–70. http://dx.doi.org/10.22487/ms26866579.2021.v9.i1.pp62-70.
Texte intégralRésumé :
One of the major problem for fishermen of Tolo Bay water in optimizing the utilization of the fish resources is the difficulty in determining potential fishing grounds. The fishing area is very much determined by the distribution of oceanographic parameters, in particular the distribution of sea surface temperature and chlorophyll-a concentration. The aim of the reaserch is to estimate the fishing ground using integrated sea surface temperature and chlorophyll-a distribution image data from Aqua-Modis Level 3 Satellite and Seades 7.2. The Reseacrh was conducted using GIS-based Remote Sensing Method and Field Survey through in situ measurement (ground check) as validation data. Satellite image data in the form of sea surface temperature distribution and cholorophyll-a were analyzed using ArgGIS 10.2 software. Recorder sea surface temperature and cholorophyll-a image data were obtained from National Institute Of Aeronautics and Space (LAPAN) as well as data from observations at 10 station. The results of research on estimating potential fishing ground in the water of Tolo Bay based on the distribution of sea surface temperature and cholorophyll-a concertractions are integrated in the fishing ground zoning in July with nine coordinate points.
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González-Silvera, Adriana, Eduardo Santamaría-del-Ángel, Víctor Camacho-Ibar, Jorge López-Calderón, Jonatan Santander-Cruz et Alfredo Mercado-Santana. « The Effect of Cold and Warm Anomalies on Phytoplankton Pigment Composition in Waters off the Northern Baja California Peninsula (México) : 2007–2016 ». Journal of Marine Science and Engineering 8, no 7 (18 juillet 2020) : 533. http://dx.doi.org/10.3390/jmse8070533.
Texte intégralRésumé :
In this study, we report the response of phytoplankton community composition to cold and warm interannual events affecting the waters off the Baja California Peninsula from 2007 to 2016 based on data obtained from a single marine station (31.75° N/116.96° W). Included variables were satellite chlorophyll a, sea surface temperature (MODIS/Aqua), upwelling intensity, and field data (phytoplankton pigments, inorganic nutrients, light penetration). Phytoplankton pigments were determined by high performance liquid chromatography, and CHEMTAX software was used to determine the relative contributions of the main taxonomic groups to chlorophyll a. Our results confirm the decrease in phytoplankton biomass due to the influence of the recent Pacific Warm Anomaly (2014) and El Niño 2015–2016. However, this decrease was especially marked at the surface. When data from the entire water column was considered, this decrease was not significant, because at the subsurface Chla did not decrease as much. Nevertheless, significant changes in community composition occurred in the entire water column with Cyanobacteria (including Prochlorococcus) and Prymnesiophytes being dominant at the surface, while Chlorophytes and Prasinophytes made a strong contribution at the subsurface. Analysis of the spatial distribution of SST and satellite chlorophyll a made it possible to infer the spatial extension of these anomalies at a regional scale.