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Record Nr. |
UNINA9910300361103321 |
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Autore |
Seamark Philip |
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Titolo |
Beginning DAX with Power BI : The SQL Pro’s Guide to Better Business Intelligence / / by Philip Seamark |
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Pubbl/distr/stampa |
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Berkeley, CA : , : Apress : , : Imprint : Apress, , 2018 |
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ISBN |
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Edizione |
[1st ed. 2018.] |
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Descrizione fisica |
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1 online resource (270 pages) |
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Disciplina |
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Soggetti |
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Microsoft software |
Microsoft .NET Framework |
Big data |
Microsoft and .NET |
Big Data/Analytics |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Nota di contenuto |
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Chapter 1: Introduction to DAX -- Chapter 2: Variables -- Chapter 3: Context -- Chapter 4: Summarizing and Aggregating -- Chapter 5: Joins -- Chapter 6: Filtering -- Chapter 7: Dates -- Chapter 8: Debugging and Optimizing -- Chapter 9: Practical DAX. |
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Sommario/riassunto |
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Attention all SQL Pros, DAX is not just for writing Excel-based formulas! Get hands-on learning and expert advice on how to use the vast capabilities of the DAX language to solve common data modeling challenges. Beginning DAX with Power BI teaches key concepts such as mapping techniques from SQL to DAX, filtering, grouping, joining, pivoting, and using temporary tables, all aimed at the SQL professional. Join author Philip Seamark as he guides you on a journey through typical business data transformation scenarios and challenges, and teaches you, step-by-step, how to resolve challenges using DAX. Tips, tricks, and shortcuts are included and explained, along with examples of the SQL equivalent, in order to accelerate learning. Examples in the book range from beginner to advanced, with plenty of detailed explanation when walking through each scenario. What You’ll Learn: Turbocharge your Power BI model by adding advanced DAX |
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programming techniques Know when to use calculated measures versus calculated columns Generate new tables on the fly from existing data Optimize, monitor, and tune Power BI to improve performance of your models Discover new ideas, tricks, and time-saving techniques for better models This book is for business intelligence developers, business analysts, or any SQL user who wants to use Power BI as a reporting tool. A solid understanding of SQL is recommended, as examples throughout the book include the DAX equivalents to SQL problem/solution scenarios. Philip Seamark,a Senior BI architect with Trade Me and a Microsoft Data Platform MVP with more than 25 years of commercial experience delivering business applications across multiple technologies. He is an experienced database and BI professional with a deep understanding of the Microsoft stack and extensive knowledge of data warehouse (DW) methodologies and enterprise data modeling. Philip writes for the Power BI community site, and is a speaker at many industry events, Microsoft Ignite, Data Insights, Power BI User Groups, SQL Saturdays, and more. |
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2. |
Record Nr. |
UNINA9911004779303321 |
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Autore |
Fischer Jerry M |
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Titolo |
Handbook of molded part shrinkage and warpage / / Jerry M. Fischer |
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Pubbl/distr/stampa |
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Norwich, NY, : Plastics Design Library/William Andrew Pub., c2003 |
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ISBN |
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1-282-00274-0 |
9786612002748 |
0-08-095045-0 |
0-8155-1760-2 |
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Descrizione fisica |
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1 online resource (265 p.) |
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Collana |
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Disciplina |
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Soggetti |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references (p. [237]-239) and index. |
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Nota di contenuto |
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Front Cover; Handbook of Molded Part Shrinkage and Warpage; Copyright Page; Table of Contents; Chapter 1. Introduction to Plastics |
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Processing; 1.0 Introduction; 1.1 Interactivity Basics; 1.2 Thermodynamic Principles Governing Injection Molding; Chapter 2. Shrinkage and Warpage; 2.1 In-Mold Shrinkage; 2.2 Warpage; 2.3 Post-Mold Shrinkage; Chapter 3. Causes of Molded-Part Variation: Part Design; 3.1 Wall Thickness; 3.2 Ribs; 3.3 Bosses; 3.4 Example of Proper Part Design; 3.5 Other Design Considerations; Chapter 4. Causes of Molded-Part Variation: Material |
4.1 Amorphous and Semicrystalline Resins4.2 Effects of Fillers, Reinforcements, Pigments, Time, and Stress; 4.3 Shrinkage Predictions: Using Pressure-Volume-Temperature (PVT) Relationships; Chapter 5. Causes of Molded-Part Variation: Mold Design; 5.1 Cavity Dimensions and Design Factors; 5.2 Gate Types; 5.3 Gate Location; 5.4 Gate Size; 5.5 Gate-Design Systems; 5.6 Runner Design; 5.7 Mold-Cooling Design; 5.8 Mold Construction Materials; 5.9 Prototype Molding with SLA or Similar Type Molds; 5.10 Pitfalls to Avoid; Chapter 6. Causes of Molded-Part Variation: Processing; 6.1 Molding Conditions |
6.2 Injection Melt Temperature6.3 Injection Rate and Pressure; 6.4 Holding Pressure and Time; 6.5 Mold Temperature; 6.6 Demolding Temperature; 6.7 Molded-In Stresses; 6.8 Other Molding Processes; Chapter 7. Factors Affecting Post-Mold Shrinkage and Warpage; 7.1 Effects of Temperature on Dimensions; 7.2 Effects of Moisture on Dimensions; 7.3 Creep; Chapter 8. Controlling Mold and Post-Mold Shrinkage and Warpage; 8.1 Finding the Cause; 8.2 Processing Considerations; 8.3 Material Considerations; 8.4 Tooling Considerations; 8.5 Part Geometry; 8.6 Controlling Warpage |
Chapter 9. Computer-Aided Analysis9.1 Capabilities of CAA; 9.2 Limitations of CAA; 9.3 Selecting a CAA Program; 9.4 Customer Requirements; 9.5 Management Tools; 9.6 Filling Analysis; 9.7 Packing and Holding Simulation; 9.8 Shrinkage/Warpage Simulation; 9.9 Cooling Analysis; 9.10 Costs; 9.11 Conclusions; Chapter 10. Case Studies; 10.1 Unexpected Housing Shrink; 10.2 Changing Materials Triggers Warpage; 10.3 Creep in a Water Heater Stand; 10.4 Oversize Part Injection-Molding Alkyd Thermoset; 10.5 Inadequate Baby Dish Mold; 10.6 Gas Entrapment in Baby Dish Mold; 10.7 Warpage in a Molded Spool |
10.8 Daisy-Wheel Breakage10.9 PVC Part-Flashing Problems; 10.10 Polycarbonate Switch Failure; 10.11 Square Poker Chip Tray, Inadequate Shot Size; 10.12 Problem Ejecting Square Poker Chips; 10.13 Military Cup Material "Shrinkage"; 10.14 Core-Deflection Problems; 10.15 Elevator Gib Warpage; 10.16 Sucker-Rod Guide Brittleness; 10.17 Bottle-Cap Thread Distortion; 10.18 Plastic Post Creep; 10.19 Excessive Shrinkage of Glass-Filled Nylon; 10.20 Preventing Warpage in Thin Molded Lids; Chapter 11. Data; 11.1 Unfilled Materials; 11.2 Effects of Fillers; 11.3 Shrinkage vs Various Parameters |
11.4 Moisture Absorption Curves |
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Sommario/riassunto |
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The handbook explains in plain terms why moldings shrink and warp, shows how additives and reinforcements change the picture, sets out the effect of molding process conditions, and tells why you never can have a single """"correct"""" shrinkage value. But that's not all. The handbook shows how to alleviate the problem by careful design of the molded part and the mold and by proper material selection. It also examines computer-aided methods of forecasting shrinkage and warpage. And most important of all, the handbook gives you the data you need to work with. This is the most complete c |
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