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Efficient aggregation (and more) using data.table

Nov 27, 2015One such weakness is that by design data.table aggregation requires the variables to be coming from the same data.table, so we had to cbind the two variables. Also, the aggregation in data.table returns only the first variable if the function invoked returns more than variable, hence the equivalence of the two syntaxes showed above.

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Job Information Aggregate Plant Mechanic Job appone

The Plant Mechanic is primarily responsible for the safe and complete maintenance of various aggregate crushing, washing, and screening plants. The successful candidate will possess a broad knwledge of aggregate processing plants, maintenance, repair, and fabrication abilities, and excellent communication and customer service skills.

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Impact of Spatial Soil and Climate Input Data Aggregation

In order to relate these findings to the present study, the following steps were applied 1) aggregation of one type of input data keeping other information constant at coarse resolution (e.g. one data input value per region); 2) aggregation of one type of input data keeping other information constant at high resolution (e.g. 1 km); 3) aggregating several types of input data simultaneously.

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PLANT AGGREGATE Power plant aggregate is composed principally of silicon, aluminum, and iron and small percentages of calcium, magnesium, sodium, and other elements (4, 5). The composition of the ash is primarily controlled by the source of the coal and not by the type of the furnace. Chemical composition itself is of little practical im

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Aggregate Capacity Management Definition Investopedia

Jul 03, 2019Aggregate capacity management is the process of planning and managing the overall capacity of an organization's resources. Aggregate capacity management aims to balance capacity and demand in a cost-effective manner. It is generally medium-term in nature, as opposed to day-to-day or weekly capacity management.

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20 Best Manager Aggregate Plant jobs (Hiring Now

Sales, asphalt plants, aggregate plants, trucking) to ensure goals are being achieved. Plan, schedule, and execute the day-to-day operations of a project. Estimated $42,000 $61,000 a year. Please note that all salary figures are approximations based upon third party submissions to SimplyHired or

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Operations Subcommittee Report on Individual Premium

Operations Subcommittee Report on Individual Premium Aggregation Please see attached a report on Individual Premium Aggregation with Comments in the District's Health Benefit Exchange, which outlines two options for handling payment of health insurance premiums to

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Data Aggregation Electric Reliability Council of Texas

Locate data aggregation daily postings that include UFE reporting; consumption data loading; and TDSP distribution and transmission loss factors. Also find forms to report assets, load and resources.

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Aggregate Asphalt Concrete Materials

Aggregate Asphalt Concrete Materials offers the highest quality selection of rock, sand and gravel. We wash and grade many of our aggregate products to meet appropriate specifications.

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Add Master Data in BW Info Object via AFO interface SAP

Nov 29, 2017Add Master Data in BW Info Object via AFO interface. If user is happy will simulation then he can go for permanent creation of master data in Z_PLANT via upload the Master Data button. Create aggregation level on the top of Composite provider. Create FOX

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What does aggregate mean? definition, meaning and

Familiarity information AGGREGATE used as a noun is rare. AGGREGATE (adjective) The adjective AGGREGATE has 2 senses 1. gathered or tending to gather into a mass or whole. 2. formed of separate units in a cluster. Familiarity information AGGREGATE used as an adjective is rare.

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BWonHana Example Exception Aggregation Pushdown SAP

Dec 15, 2016TREX-Statement to retreive data for basis key figure TREX-Statement to retreive data for calculated key figure As we can see we retreive 12 data records (containing Plant information) from the database. Later on the OLAP engine can identify the Maximum value out of all Plants (which is 5).

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() Data Aggregation in Wireless Sensor Networks

Tree based data aggregation is suitable for applications which involve in-network data begin aggregation. An example application is radiation level monitoring in a nuclear plant where the maximum value n ( S ) no. of nodes in S provides the most useful information for the safety of the return ( first node of S ) plant.

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Authors Martin E KoleweAbout Cell biology Bioprocess engineering Paclitaxel Taxus

Aggregate Functions (Transact-SQL) SQL Server

In this article. An aggregate function performs a calculation on a set of values, and returns a single value. Except for COUNT, aggregate functions ignore null values. Aggregate functions are often used with the GROUP BY clause of the SELECT statement. All aggregate functions are deterministic.

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Aggregates news Aggregate Research

Aggregates news by Aggregate Research. Latest News in the aggregates, concrete, asphalt and cement sectors. Join now.

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Advantages and Disadvantages of Aggregate Production

Aggregate production planning is a general approach to altering a company's production schedule to respond to forecasted changes in demand.

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Production efficiencies of U.S. electric generation plants

Production efficiencies of U.S. electric generation plants effects of data aggregation and greenhouse gas and renewable energy policy Lynes, Melissa Kate Over the last few decades there has been a shift in electricity production in the U.S. Renewable energy sources are becoming more widely used.

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Aggregate Automation Kruse Integration

Providing automation solutions to the aggregate industry for over a decade. Automatic plant startup and shutdown Saves time and money by freeing the operator from these repetitive tasks Automatic process and safety interlocks Continually monitors plant status and automatically stops feeders and upstream conveyors if a conveyor stops

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LafargeHolcim launches the 'Plants of Tomorrow' initiative

LafargeHolcim is presently working on more than 30 pilot projects covering all regions, where the company is active. The company's Siggenthal, Switzerland, integrated cement plant will be the lighthouse where the integration of all relevant modules will be tested for the global 'Plants of Tomorrow' initiative.

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Measuring Aggregate Productivity Growth Using Plant-Level Data

We define aggregate productivity growth as the change in aggregate final demand minus the change in the aggregate cost of primary inputs. We show how to aggregate plant-level data to this measure and how to use plant-level data to decompose our measure

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Imaging plant cell death GFP-Nit1 aggregation marks an

Mar 29, 2005Our observations place aggregation of Nitrilase 1 as one of the earliest events associated with wound and herbicide-induced cell death and highlight several novel cellular events that occur as plant cells die. Our data create a detailed descriptive framework for future investigations of plant cell death and provide new tools for both its

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Aggregation Energy trading with e2m

We provide route to market PPAs, flexibility aggregation and energy supply services. With a considerable 3,700 MW of generation capacity and a trading volume of around 305 € million in 2017, e2m bundles the power of decentralized generating plants, prosumers and storage facilities.

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Automated Benchmarking Tool Business Georgia Power

Automated Benchmarking Tool. Georgia Power has developed the efficient and secure Automated Benchmarking Tool (ABT) to enable building owners and property managers to retrieve energy consumption data for upload to the ENERGY STAR Portfolio Manager. The tool will help you, from start to finish, aggregate your building's usage data

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Enhanced Plant Design for Aggregate Processing Agg-Net

Armed with such data, it is then feasible to proceed with the process of flow concept design, and the following are general points to be borne in mind for building an effective crushing and screening plant. Evaluation and calculation. The intention is to evaluate the content of the plant from in-feed to the plant through the various process stages.

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2NS Natural Sand American Aggregate, Highland Plant

The 2NS Natural Sand should be blended into the concrete mixture along with the cement, coarse aggregate, water, admixtures and any special additives in the proportions detailed in the mix design. Care needs to be taken to ensure that the mix water is adjusted to compensate for 2NS Natural Sand

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Material Grouping and Cross-Plant View in the Stock

Nov 06, 2014From ERP 6.0 EHP2, if activate business function LOG_PP_LMAN, stock/requirement list(t-code MD04) increases new functions material grouping and cross-plant view. Nowadays, more and more companies produce the material in multiple plants, this new function can help them to check the stock/requirement from the whole company view.

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Unite Vast Clinical Data and Optimize DiscoveryPerkinElmer

With larger, longer, and more complex clinical trials, along with more stringent regulatory requirements and oversight, integrating and managing the vast amounts of data arriving at a central integration point from many different trial sources has become a daunting task.The good news is that innovations in clinical trial technology are underway, promising to improve trial efficiency, accuracy

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How Auto Lube Increases Efficiencies at an Aggregate Plant

A Minnesota aggregate plant maximizes tonnage and reduces downtime with automatic lubrication. A Minnesota aggregate company recently turned to Graco for an automatic lubrication solution on their rock crusher, one of the most rugged pieces of equipment.

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Secure Data Aggregation in Wireless Sensor Networks

sensor networks include manufacture plant monitoring, asset tracking, traffic monitoring, environmental monitoring, public safety, and so on . In-network data aggregation, a key functionality in wireless sensor networks and refers to the process in which the sensed data are processed and aggregated en-route by intermediate sensor nodes.

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Use aggregation in a sentence aggregation sentence

aggregation of data. Propofol inhibits platelet aggregation which could reduce the risk of thrombosis. Just to confuse things further, there is now an acceptance that in

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