دانلود پاورپوینت (Thermodynamics An Engineering Approach (Fourth Edition

اختصاصی از فی بوو دانلود پاورپوینت (Thermodynamics An Engineering Approach (Fourth Edition دانلود با لینک مستقیم و پر سرعت .

 Yunus A. Çengel

Michael A. Boles

-----------------------------------

Basic Concepts 

of Thermodynamics

FIGURE 1–5
Some application areas of thermodynamics. 

FIGURE 1–7
The definition of the force units.

FIGURE 1–13
System, surroundings, and boundary.

FIGURE 1–14
Mass cannot cross the boundaries of a closed system, but energy can.

FIGURE 1–17
A control volume may involve fixed, moving, real, and imaginary boundaries.

شامل 21 اسلاید powerpoint

دانلود پاورپوینت A New Approach to Flow Network Analysis of an Engine Lubrication System

اختصاصی از فی بوو دانلود پاورپوینت A New Approach to Flow Network Analysis of an Engine Lubrication System دانلود با لینک مستقیم و پر سرعت .

Abstract:

In order to develop more efficient engines, it is essential to optimize the lubrication circuit of the power train systems.

Two elements have been added to the lubrication circuit in the modified engine. These elements are hydraulic lifters and an Anti-drain valve.

The analyses are done by Flowmaster7.6 and AVL EXCITE7.02 software and an accessory code.

 Finally, theoretical results are validated by a completely controlled lubrication functional test.

 Keywords:

Lubrication Circuit

Bearing Map

Chain Tensioner

Flowmaster

Journal Bearings

Introduction:

Modern engines are being designed to operate at high engine speeds and loads. In order to fulfill the requirements of developing new engines, lubrication system must be improved.

üYiqing Yuan et al, in 2007, established a methodology for predicting lubrication flow in the rod bearings and oil circuits that can be used to guide engineering designs.

üYaguo Lu et al. [10], in 2009, developed a software for simulating aero-engine lubrication system.

In this paper, two important components, chain tensioner and anti-drain valve, have been investigated as well as other components in the lubrication system.

Engine description:

There are three important reasons for improving the base engine to the modified engine:

 (1) using inexpensive and locally abundant CNG fuel,

 (2) demanding higher power and

 (3) modifying weaknesses of the base engine. The engine parameters are listed in table.

شامل 23 اسلاید powerpoint

ترجمه مقاله Intrusion Detection in Role Administrated Database:Transaction- Based Approach

اختصاصی از فی بوو ترجمه مقاله Intrusion Detection in Role Administrated Database:Transaction- Based Approach دانلود با لینک مستقیم و پر سرعت .

Intrusion Detection in Role Administrated Database:Transaction- Based Approach

Abstract

Most of valuable information resources for all organizations are stored in database. It's a serious subject to protect this information against intruders. However, conventional security mechanisms haven’t been designed to detect anomalous actions of database users. Intrusion detection systems (IDS) deliver an extra layer of security that cannot be guaranteed by built-in security tools. IDS provide the ideal solution to defend databases from intruders. In this paper, we suggest an anomaly detection approach that summarizes the raw transactional SQL queries into compact data structure called hexplet, which can model normal database access behavior (abstract the user's role profile) and recognize impostors specifically tailored for role–based access control (RBAC) database system. This hexplet allows us to preserve the correlation among SQL statements in the same transaction by exploiting the information in the transaction-log entry. Our target is to improve detection accuracy, specially the detection of those intruders inside the organization who behave strange behavior. Our model utilizes Naive Bayes Classifier (NBC) as a simple technique for evaluating the legitimacy of transaction. Experimental results show the performance of the proposed model in the term of error equal rate.

تشخیص نفوذ در جایگاه مدیریت بانک اطلاعات: روشی بر اساس تراکنش

چکیده
بسیاری از منابع اطلاعاتی با ارزش برای همه سازمان ها در پایگاه داده ذخیره می شود. بنابراین حفاظت از این اطلاعات در برابر مزاحمان یک موضوع جدی است. با این حال، مکانیزم های امنیتی متداول برای تشخیص اعمال غیر عادی کاربران پایگاه داده طراحی شده اند. سیستم های تشخیص نفوذ (IDS) یک لایه امنیتی اضافی است که نمی تواند با ساختار آن را به عنوان یک ابزار امنیتی تضمین کرد. IDS راه حل ایده آلی برای دفاع از پایگاه های داده در برابر مزاحمان است. در این مقاله، ما یک روش تشخیص ناهنجاری را نشان می دهیم که تراکنش SQL را به صورت خلاصه در ساختار داده ای فشرده ای به نام hexplet جمع آوری کرده است، که می تواند مدلی جهت دسترسی نرمال به پایگاه داده (خلاصه مشخصات فعالیت کاربر) و رفتار کاربران کاذب را به صورت کنترل دسترسی بر اساس فعالیت (RBAC) سیستم پایگاه داده طراحی شده را تشخیص دهد. این hexplet به ما اجازه می دهد همبستگی بین دستورات SQL در یک تراکنش را با بهره گیری از اطلاعات موجود در ورودی فایل log نطابقت و محافظت نماییم.

• سال : 2013
• تعداد صفحات انگلیسی پی دی اف : 7
• تعداد صفحات فارسی ورد :16

 ( لینک دانلود مقاله همراه با ترجمه فارسی رو از لینک زیر دانلود کنید )

DRUG CALCULATIONS FOR NURSES, A step by step approach, Robert Lapham

اختصاصی از فی بوو DRUG CALCULATIONS FOR NURSES, A step by step approach, Robert Lapham دانلود با لینک مستقیم و پر سرعت .

DRUG CALCULATIONS FOR NURSES, A step by step approach, Robert Lapham

2016

مطالب

Part I: Mathematics 1
1 Basics 3
Introduction 5
Arithmetic symbols 6
Basic maths 6
Rules of arithmetic 15
Fractions and decimals 17
Roman numerals 30
Powers or exponentials 31
2 First principles 33
Sense of number and the use of calculators or formulae 33
Estimation of answers 34
The ‘one unit’ rule 35
Checking your answer – does it seem reasonable? 37
Putting it all together 38
Minimizing errors 39
3 Per cent and percentages 41
Introduction 42
Per cent and percentages 42
Converting fractions to percentages and vice versa 43
Converting decimals to percentages and vice versa 43
Calculations involving percentages 44
Drug calculations involving percentages 48
How to use the per cent key on your calculator 51
4 Units and equivalences 55
Introduction 56
SI units 56
Prefixes used in clinical practice 57
Equivalences 58
Conversion from one unit to another 59
Guide to writing units 62
5 Moles and millimoles 65
Introduction 66
What are moles and millimoles? 66
Millimoles and micromoles 67
6 Drug strengths or concentrations 73
Introduction 74
Percentage concentration 75
mg/mL concentrations 77
‘1 in …’ concentrations or ratio strengths 80
Parts per million (ppm) 81
Drugs expressed in units 83
Part II: Performing calculations 87
7 Dosage calculations 89
Introduction 90
Calculating the number of tablets or capsules required 90
Drug dosages based on patient parameters 93
Ways of expressing doses 96
Calculating drug dosages 97
Displacement values or volumes 101
Prescriber calculations 103
8 Infusion rate calculations 107
Introduction 108
Drip rate calculations (drops/min) 109
Conversion of dosages to mL/hour 112
Conversion of mL/hour back to a dose 121
Calculating the length of time for IV infusions 124
Part III: Administering medicines 129
9 Intravenous therapy and infusion devices 131
IV infusion therapy 133
Answers 140
Infusion devices 144
Infusion device classification 148
10 Action and administration of medicines 151
Action and administration of medicines 152
Introduction 153
Pharmacokinetics and pharmacodynamics 154
Administration of medicines 167
Promoting the safer use of injectable medicines 175
11 Children and medicines 179
Introduction 180
Drug handling in children 181
Pharmacodynamics 183
Routes of administration of drugs 183
Practical implications 185
Useful reference books 190
Approximate values useful in the calculation of
doses in children 190
12 The elderly and medicines 193
Introduction 194
Drug handling in the elderly 194
Specific problems in the elderly 197
General principles 198
13 Sources and interpretation of drug information 201
Introduction 201
Sources of drug information 202
The internet 203
Summary of product characteristics (SPC) 204
Revision test 211
Section one: basics 211
Per cent and percentages 212
Units and equivalences 212
Drug strengths or concentrations 213
Dosage calculations 213
Infusion rate calculations 214
Compare your scores 215
Answers to problems 216
Answers to problems set in chapters 219
3. Per cent and percentages 220
4. Units and equivalences 222
5. Moles and millimoles 223
6. Drug strengths or concentrations 227
7. Dosage calculations 228
8. Infusion rate calculations 250
10. Action and administration of medicine 278
Appendices 279
1 Body surface area (BSA) estimates 281
2 Weight conversion tables 283
3 Height conversion tables 285
4 Calculation of body mass index (bmi ) 287
5 Estimation of renal function 295
6 Abbreviations used in prescriptions 297

A synergistic approach to small business entrepreneurship

اختصاصی از فی بوو A synergistic approach to small business entrepreneurship دانلود با لینک مستقیم و پر سرعت .