PENGGUNAAN LEARNING MANAGEMENT SYSTEM (LMS) DI PERGURUAN TINGGI: STUDI KASUS DI UNIVERSITAS PENDIDIKAN INDONESIA

Factors Affecting the Use of the Learning Management System in Universities (A Case Study in Indonesia University of Education). The purpose of this paper is to find out factors that affect the usage of the Learning Management System (LMS) in in Indonesia University of Education. Indonesia University of Education has been built LMS to support learning processes. The focus is on factors affecting the use of LMS in supporting effective and efficient learning processes. In this research the writer used Technology Acceptance Model (TAM) to find out those factors. The data were collected using the survey technique and were analyzed by means of the multivariate statistic method. The result of this research concluded that the factors of Perceived Usefulness (PU), Perceived Ease of Use (PEOU), Intention to Use (ITU), Actual Usage Behavior (AUB) significantly affected the effective and efficient use of LMS in supporting learning processes. Keywords: Learning Management System (LMS), Technology Acceptance Model (TAM), Information and Communication technology (ICT)

NOx control in coal combustion by combining biomass co-firing, oxygen enrichment and SNCR

There has been renewed interest in evaluating NOx emission control by selective non-catalytic reduction (SNCR) combined with biomass co-firing to meet impending enforcement of NOx emission limits for power generation plant. Oxygen enrichment for the concentration of CO 2 in the flue gas has been observed in this work to have benefits for NOx emission control. This paper presents new information on the effect of combining biomass co-firing with SNCR under various oxygen enriched and air-staging conditions performed in the 20 kW combustion facility. Biomass has a higher tendency to generate CO and produced better reductions in NO x emission with and without using SNCR. NO reduction of around 80% were attained using SNCR for 15% and 50% blending ratios of biomasses at 21% overall O2 concentration for unstaged combustion. Whereas, a range of 40-80% NO reductions were attained for coal (Russian Coal) and 15% co-fired biomasses with 3.1-5.5% overall O2 concentration at 22-31% levels of flame staging. Moreover, it was found that better NOx removal efficiency was attained for higher NOx emission baselines under both oxygen enriched and normal firing conditions. However, SNCR NOx control for both coal or coal-biomass blends was observed to produce higher NOx reductions during O2 enrichment, believed to be due to the self-sustained NOx reduction reactions. Hence, NOx control by SNCR, oxygen enriched co-firing in power station boilers would result in lower NOx emissions and higher CO2 concentration for efficient scrubbing with better carbon burnouts. © 2012 Elsevier Ltd. All rights reserved

Anemia prevalence in women of reproductive age in low- and middle-income countries between 2000 and 2018

Anemia is a globally widespread condition in women and is associated with reduced economic productivity and increased mortality worldwide. Here we map annual 2000–2018 geospatial estimates of anemia prevalence in women of reproductive age (15–49 years) across 82 low- and middle-income countries (LMICs), stratify anemia by severity and aggregate results to policy-relevant administrative and national levels. Additionally, we provide subnational disparity analyses to provide a comprehensive overview of anemia prevalence inequalities within these countries and predict progress toward the World Health Organization’s Global Nutrition Target (WHO GNT) to reduce anemia by half by 2030. Our results demonstrate widespread moderate improvements in overall anemia prevalence but identify only three LMICs with a high probability of achieving the WHO GNT by 2030 at a national scale, and no LMIC is expected to achieve the target in all their subnational administrative units. Our maps show where large within-country disparities occur, as well as areas likely to fall short of the WHO GNT, offering precision public health tools so that adequate resource allocation and subsequent interventions can be targeted to the most vulnerable populations.Peer reviewe

RANCANG BANGUN CONTROL VALVE BERPENGGERAK MOTOR DC UNTUK SISTEM PENGENDALIAN KETINGGIAN AIR PADA SEPARATOR 2 FASA

In the 2-phase separator process control is generally divided into 3 parts, namely readings natural phenomenon by the sensors, the data processing by the controller and execution order controllers by the control valve. To understand process control in 2-phase separator required a miniature separator together with their fittings which consist of sensors, controllers and control valve or commonly called mini plant. On the design and build this 2-separator mini plant using control valve with a DC motor as regulators of water flow. Used by 5 volt power supply with Tputar variation from 0 to 91.1 seconds as the control variable of the control valve. Characterization of the transfer characteristic control valve performed with 4 tests are: DC motor driver block test, DC motor block test (Tputar influence the degree rotary), the valve block test (degree rotary influence the percent valve opening), control valve on the 2-phase separator system test and the final testing of the influence of voltage variations on the characteristics of the control valve to see the dynamic characteristics of the control valve. Obtained from the testing of control valve characteristics for Tputar input range of 9,11 to 63,77 seconds, the output range from 7,49 to 98,53 ml/s, and the type flow characteristics is quick opening with a time constant 12,61 seconds

Komputer dan masyarakat

xii,147 hlm,; 23 c

Wood-based litter in poultry production: a review

International audienceBedding material is an important requirement of floor-based poultry production systems to meet the health and welfare requirements. This substrate can be an organic material like wood or plant-based material or inorganic material like clay and sand and should generally be a good absorbant, easily available, comfortable and nontoxic to birds. Wood is an organic renewable resource having good humidity regulation and antimicrobial properties and its by-products are commonly used as poultry litter in many countries. For example, in France, wood-based bedding is used in 80% of turkey production. This litter has approximately 50% lower NH3 production compared to other materials like sand and hulls, and has multiple environment-friendly disposal options. Moreover, the birds grown on such litter show better health and welfare and they prefer to practice their natural behaviours on this material which is helpful for the amelioration of physiological status and reduction of locomotion injuries. Moreover, according to some studies, the birds show improvement in different performance parameters, for example, up to 5-7% improvement in daily weight gain, live body weight, feed conversion ratio (FCR) and survivability. These improvements may differ depending upon the production system and type of wood material used in experiments, still it can be concluded that wood-based bedding materials do not negatively affect the production potential of poultry. In addition, the antimicrobial potential of wood may help to counter the load of certain pathogens in environment of birds. This review describes the physiochemical properties of wood-based bedding materials and their role in production and welfare of poultry