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Digital Dictionary Using Binary Search Algorithm

Journal of Physics: Conference Series 2019年第1期1255卷

作者： Riski Muhamad Fitrian Insan Taufik Muhammad Sabir Ramadhan Neni Mulyani Jeperson Hutahaean Arjon Samuel Sitio Hengki Tamando Sihotang Teknik Informatika STMIK Pelita Nusantara Medan Sumatera Utara Indonesia Doctoral Program Vocational Technology Education Postgraduate Engineering Faculty Padang State University Padang West Sumatera Indonesia Sistem Informasi STMIK Royal Kisaran Sumatera Utara Indonesia Doctoral Program Faculty of Computer Science and Information Technology Universitas Sumatera Utara Medan-Indonesia

Digital Dictionary of Computer and Network engineering can be used in the learning process of computer and nerwork enginering students. Dictionaries are generally book-shaped is hard to carry because of their thick and heavy, now can be accessed anywhere by development of web technology. Digital dictionaries can be accessed through computers, laptops dan cellphones, this is make student easily in learning process. The digital dictionary can not only be used by students of computer and network engineering, but can also by general public, as long as you have an internet connection, anyone can be use this digital dictionaries. The main process in this digital dictionary is the search process. Binary search algorithm used in the search process of binary search algoritm. Binary search algoritm search is applied to word search in this digital dictionary, because this algoritm is intended for sequintal data. program language that will be used to build this digital dictionary is PHP and MySQL.

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Flux balance analysis indicates that methane is the lowest cost feedstock for microbial cell factories

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Metabolic engineering Communications 2017年 5卷 26-33页

作者： Comer, Austin D. Long, Matthew R. Reed, Jennifer L. Pfleger, Brian F. Department of Chemical and Biological Engineering University of Wisconsin-Madison Madison 53706 WI United States Microbiology Doctoral Training Program University of Wisconsin-Madison Madison 53706 WI United States

The low cost of natural gas has driven significant interest in using C1 carbon sources (e.g. methane, methanol, CO, syngas) as feedstocks for producing liquid transportation fuels and commodity chemicals. Given the la...

The low cost of natural gas has driven significant interest in using C₁ carbon sources (e.g. methane, methanol, CO, syngas) as feedstocks for producing liquid transportation fuels and commodity chemicals. Given the large contribution of sugar and lignocellulosic feedstocks to biorefinery operating costs, natural gas and other C₁ sources may provide an economic advantage. To assess the relative costs of these feedstocks, we performed flux balance analysis on genome-scale metabolic models to calculate the maximum theoretical yields of chemical products from methane, methanol, acetate, and glucose. Yield calculations were performed for every metabolite (as a proxy for desired products) in the genome-scale metabolic models of three organisms: Escherichia coli (bacterium), Saccharomyces cerevisiae (yeast), and Synechococcus sp. PCC 7002 (cyanobacterium). The calculated theoretical yields and current feedstock prices provided inputs to create comparative feedstock cost surfaces. Our analysis shows that, at current market prices, methane feedstock costs are consistently lower than glucose when used as a carbon and energy source for microbial chemical production. Conversely, methanol is costlier than glucose under almost all price scenarios. Acetate feedstock costs could be less than glucose given efficient acetate production from low-cost syngas using nascent biological gas to liquids (BIO-GTL) technologies. Our analysis suggests that research should focus on overcoming the technical challenges of methane assimilation and/or yield of acetate via BIO-GTL to take advantage of low-cost natural gas rather than using methanol as a feedstock. © 2017

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Indoor Air Pollution in Non Ac Passenger Bus 2

Indoor Air Pollution in Non Ac Passenger Bus

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2nd International Conference on Energy, Environmental and Information System, ICENIS 2017

作者： Husna, Iksiroh El Yan El Rizal Unzilatirrizqi, D. Karyanto, Yudi Sunoko, Henna R. Doctoral Program of Environmental Science School of Post. Stu. Diponegoro University Semarang Indonesia Nautical Departement Merchant Marine Polytechnic Semarang Jingosari 2A Semarang Indonesia Automotive Engineering Polytecnic of Ro. Safety Transport Jl. Semeru No. 3 Tegal50125 Indonesia Faculty of Medicine Diponegoro University Jl. Prof Sudharto SH Semarang5027 Indonesia

Passenger buses have been one of favorite means of transportation in Indonesia due to its affordability and flexibility. Intensity of human activities during the trip in the buses have a potential of causing indoor air pollution (polusi udara dalam ruang;PUDR). The indoor air pollution has an impact of 1000-time bigger than outdoor air pollution (polusi udara luar ruang;PULR) on lung. This study aimed to find out indoor air pollution rate of non air conditioned buses using an approach to biological agent pollutant source. The study applied an analysis restricted to microorganisms persistence as one of the sources of the indoor air pollution. The media were placed in different parts of the non AC buses. This study revealed that fungs were found in the non AC buses. They became contaminants and developed pathogenic bacteria that caused air pollution. © 2018 The Authors, published by EDP Sciences.

关键词： Buses

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Development of information systems in integrated management systems in order to increase organisational performance in a construction company

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IOP Conference Series: Earth and Environmental Science 2019年第1期258卷

作者： Ringgy Masuin Yusuf Latief Teuku Yuri Zagloel Doctoral Program Civil Department 16424 University of Indonesia Depok Professor Civil Department 16424 University of Indonesia Depok Professor Industrial Engineering Department 16424 University of Indonesia Depok

There are various information systems to improve organisational performance that are well-established in construction companies. However, information systems, especially in integrated management system, are not yet well-established to describe productivity of the worker in order to improve organisational performance. There is still needed development in the procedure and manual in this information system. These are developed by an integrated management system clause (high level structure). These procedure and manuals will reduce rework, accident, sickness and waste as part of an integrated management system in a construction company. Information systems are needed as a component of communication, sharing and exchanging information in an integrated management system in construction companies. This information system is used for the efficient implementation of integrated management system resources. An integrated management system is required to make the system more effective and efficient in supporting the company's business processes. The efficiency can be done by looking for any variables in an integrated management system that can increase organisational performance in a construction company through integrated information systems. This research's variables are based on previous research. Methodology used in this paper is literature review to describe database and model base in information systems. The result of this paper is a database and model base algorithm.

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A study of learning motivation of senior high schools by applying unity and mblock on programming languages courses

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Journal of Physics: Conference Series 2020年第1期1456卷

作者： L H Peng M-H Bai I Siswanto National Yunlin University of Science and Technology Department of Creative Design. University Road Section 3DouliouYunlin 64002. Taiwan. Doctoral Program Graduate School of Design National Yunlin University of Science and Technology. University RoadSection 3DouliouYunlin 64002. Taiwan. Automotive Engineering Education Department Faculty of Engineering Universitas Negeri Yogyakarta. Indonesia.

This study aims to explore whether high school students can enhance students' learning motivation through challenging learning situationsin programming courses. This study was conducted for 12th-grade students in high school. The experiment lasted for eight weeks. Measurements included Pre- and post-tests measure MSLQ (Motivated Strategies for Learning Questionnaire) and the performance of programming. The experimental group learning design the game interactive project in Unity with C# programming language, and the control group learning build Arduino interactive project in mBlock with block-based programming. The results showed that there was no significant difference in performance, but the learning motivation of the experimental group was lower than that of the control group.

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Correction to: Use of meat resources in the Early Pleistocene assemblages from Fuente Nueva 3 (Orce, Granada, Spain)

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Archaeological and Anthropological Sciences 2022年第5期14卷 1-1页

作者： Yravedra, José Solano, José Antonio Courtenay, Lloyd A. Saarinen, Juha Linares‑Matás, Gonzalo Luzón, Carmen Serrano‑Ramos, Alexia Herranz‑Rodrigo, Darío Cámara, José Miguel Ruiz, Auxiliadora Titton, Stefania Rodríguez‑Alba, Juan José Mielgo, Clara Blain, Hugues‑Alexandre Agustí, Jordi Sánchez‑Bandera, Christian Montilla, Eva Toro‑Moyano, Isidro Fortelius, Mikael Oms, Oriol Barsky, Deborah Jiménez‑Arenas, Juan Manuel Department of Prehistory Ancient History and Archaeology Complutense University of Madrid Madrid Spain C.A.I. Archaeometry and Archaeological Analysis Complutense University Madrid Spain Department of Prehistory and Archaeology University of Sevilla Seville Spain Department of Cartographic and Land Engineering Higher Polytechnic School of Avila University of Salamanca Avila Spain Department of Geosciences and Geography University of Helsinki Helsinki Finland School of Archaeology St. Hugh’s College University of Oxford Oxford UK History and Arts Doctoral Program University of Granada Granada Spain GEOREC Master Program University of Granada Granada Spain Department d’Historia i Historia de l’Art Universitat Rovira I Virgili (URV) Tarragona Spain Institut Català de Paleoecologia Humana I Evolució Social Tarragona Spain Institució Catalana de Recerca I Estudis Avançats (ICREA) Barcelona Spain Museum of the First Settlers of Europe “Josep Gibert” Granada Spain Archaeological and Ethnological Museum of Granada Granada Spain Department of Geology Unitat d’Estratigrafia University of Barcelona Barcelona Spain Department of Prehistory and Archaeology University of Granada Granada Spain Institute of Peace and Conflict Research University of Granada Granada Spain

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Bandgap in orthorhombic thin lead halide perovskite (CsPbBr3) nanosheets measured from STEM-EELS

arXiv

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arXiv 2020年

作者： Brescia, Rosaria Toso, Stefano Ramasse, Quentin Manna, Liberato Downing, Clive Calzolari, Arrigo Bertoni, Giovanni Electron Microscopy Facility Istituto Italiano di Tecnologia Via Morego 30 Genova16163 Italy Nanochemistry Department Istituto Italiano di Tecnologia Via Morego 30 Genova16163 Italy International Doctoral Program in Science Universita Cattolica del Sacro Cuore Brescia25121 Italy SuperSTEM SciTech Daresbury Science and Innovation Campus Keckwick Lane DaresburyWA4 4AD United Kingdom School of Chemical and Process Engineering & School of Physics University of Leeds LeedsLS29JT United Kingdom CRANN and AMBER Research Centers Trinity College Dublin Dublin 2 Ireland School of Chemistry Trinity College Dublin Dublin 2 Ireland CNR - Istituto Nanoscienze Via Campi 213/A Modena41125 Italy

Inorganic lead halide perovskites are promising candidates for optoelectronic applications, due to their bandgap tunability, high photoluminescence quantum yield, and narrow emission line widths. In particular, they offer the possibility to vary the bandgap as a function of the halide composition and dimension/shape of the crystals at the nanoscale. Here we present an aberration-corrected scanning transmission microscopy (STEM) study of extended nanosheets of CsPbBr3 directly demonstrating their orthorhombic crystal structure and their lateral termination with Cs-Br planes. The bandgaps from individual nanosheets are measured by monochromated electron energy loss spectroscopy (EELS). We find an increase of the bandgap starting at thicknesses below 10 nm, confirming the less dramatic effect of 1D confinement in nanosheets compared to the 3D confinement observed in quantum dots, as predicted by density functional theory calculations and optical spectroscopy data from ensemble measurements. Copyright © 2020, The Authors. All rights reserved.

关键词： Nanosheets

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Characterization of the mechanical vibration signals associated with unbalance and misalignment in rotating machines, using the cepstrum transformation and the principal component analysis

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IOP Conference Series: Materials Science and engineering 2020年第1期844卷

作者： C L Sandoval-Rodriguez J G Ascanio Villabona C G Cárdenas-Arias A D Rincon-Quintero B E Tarazona-Romero Energy Systems Automation and Control Research Group (GISEAC) Design and materials research group (DIMAT) Electromechanical Engineering Faculty of Natural Sciences and Engineering Technological Units of Santander (UTS) Road No 9-82 students 680005 Bucaramanga Colombia. Energy in Building Research Group (ENEDI) Doctoral Program in Energy Efficiency and Sustainability in Engineering and Architecture Department of Machines and Thermal Engines University of the Basque Country (UPV / EHU) Engineer Torres Quevedo Square 1 48013 Bilbao BI Spain.

In the present document, the Cepstrum transform and the analysis of principal components were used to differentiate amplitudes in the mechanical vibrations produced by unbalance and misalignment with respect to a reference group. This document requires three stages. It begins with levelling in order to establish the control group. The unbalancing was carried out with a known mass located in the two radial distances of the first and second flywheels. The misalignment was made by running the sliding supports back 0.5, 1.0 and 1.5 degrees. In the second stage, Matlab algorithms were created for both cepsctrum and main component analysis. In the last stage the obtained data were analyzed identifying the differences that may exist in the analyzed records. The project focused on the use of Matlab to find differences at a frequency of 30 Hz. The results obtained made it possible to determine that it is possible to find differences with the proposed methodology.

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Manufacture of hybrid pieces using recycled R-PET, polypropylene PP and cocoa pod husks ash CPHA, by pneumatic injection controlled with LabVIEW Software and Arduino Hardware

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IOP Conference Series: Materials Science and engineering 2020年第1期844卷

作者： A D Rincón-Quintero L A Del Portillo-Valdés A Meneses-Jacomé C G Cárdenas-Arias C L Sandoval-Rodriguez J G Ascanio-Villabona B E Tarazona-Romero J A Sandoval-Baldión J C Ortiz-Ríos R A Mantilla-Olejua Design and materials research group (DIMAT) Automation and Control Energy Systems Research Group (GISEAC) Electromechanical engineering Faculty of Natural Sciences and Engineering Technological Units of Santander (UTS) Calle de los estudiantes No 9-82 680005 Bucaramanga Colombia. Energy in Building research group (ENEDI) Doctoral Program in Energy Efficiency and Sustainability in Engineering and Architecture Department of Machines and Thermal Engines University of the Basque Country (UPV/EHU) Engineer Torres Quevedo Plaza 1 48013 Bilbao BI España.

The research consists of the design and automation of a pneumatic injector, applying LabVIEW software through an integrated Arduino hardware module, programming through an interface, the pressure that guarantees the geometric quality in the models obtained. The final result shows a piece designed in mass fraction with 40% polypropylene resin (PP), 40% recycled polyethylene terephthalate in the form of scales (R-PET) and 20% from cocoa pod husks ash (CPHA). Likewise, the platform allows to define and control the conditions of generation of the product, defining a pattern according to the type and the mass proportion between the resin of PP, R-PET and CPHA. In addition, the design of the mechanical and thermal elements, consisting of the piston and the system of clamp-type resistors, the pneumatic injection means and the raw material feed gate, improve the efficiency and effectiveness of the equipment.

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Incidence of corrosion in low voltage electrical conductor

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IOP Conference Series: Materials Science and engineering 2020年第1期844卷

作者： J G Ascanio-Villabona A D Rincón-Quintero C G Cardenas-Arias C L Sandoval-Rodriguez Automation and Control Energy Systems Research Group (GISEAC) Design and materials research group (DIMAT) Electromechanical engineering Faculty of Natural Sciences and Engineering Technological Units of Santander (UTS) Calle de los students No 9-82 680005 Bucaramanga Colombia. Energy in Building research group (ENEDI) Doctoral Program in Energy Efficiency and Sustainability in Engineering and Architecture Department of Machines and Thermal Engines University of the Basque Country (UPV/EHU) Engineer Torres Quevedo Plaza 1 48013 Bilbao BI España.

This research used a salt spray booth to generate accelerated corrosion in a copper conductor, AWG 12-gauge purity of 95.95%, this caliber used in residential electrical installations according RETIE Chapter 3 Article 20 and NTC 2050 338. Additionally, to provide an enabling stage of corrosion, type mouse tail splices were made. The amount of corrosion is measured by weight loss, and incidence of corrosion in transport was evaluated from two perspectives: difference active at the beginning and end of the test power, and the change in resistance of the specimen measured at different times of the experiment. The test piece was subjected to a flow of alternating current into a low voltage system, while corrosion occurred. Using two single-phase two-wire electronic meters, the rate of power supply circuit test was recorded, to check for changes in the energy carried from exposure to the corrosive environment wire. The data collected showed that exposure times of the samples in the salt spray chamber involvement was not very noticeable in the copper wire, highlighting small corrosion spots. Similarly, the energy no changes were observed to induce corrosion, however, the resistance of the wire showed a total change of up to 2.4 [milliohms]. The data collected showed that exposure times of the samples in the salt spray chamber involvement was not very noticeable copper wire, highlighting small corrosion spots. Similarly, the energy no changes were observed to induce corrosion, however, the resistance of the wire showed a total change of up to 2.4 [milliohms].

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