introduction to basic unix system administration pdf

... instantaneous mean vec-tor) If a series of instantaneous mean vectors is determined over time, it is possible to de-rive an average mean vector that represents all of the individual vectors over time ... depolarizes from left to right as depicted by mean electrical vector 1 This small vector is heading away from the positive electrode (to the right of a line perpendicular to the lead axis) and ... the vector is perpendicular to the axis between the two electrodes. Trang 7wave of the QRS) About 20 millisecondslater, the mean electrical vector points down-ward todown-ward the apex (vector 2),

Ngày tải lên: 11/08/2014, 00:20

... cardiac cycle is divided into two general categories: systole and diastole Systole refers to events associated with ventricular contrac-tion and ejeccontrac-tion Diastole refers to the rest of the cardiac ... guanylyl cyclase to form cGMP re-Increased cGMP within the smooth muscle cell inhibits calcium entry into the cell, which leads to relaxation Acetylcholine, however, also can bind to M3receptors cated ... G-proteinscoupled to membrane receptors Ac-tivation of stimulatory Gs-proteins through -adrenoceptor stimulation (e.g., by inephrine) increases intracellular cAMP,whereas activation of inhibitory Gi-pro-teins

Ngày tải lên: 11/08/2014, 00:20

... step is to get the kqplqpo directory contents from all hosts aggregated to You don’t want to keep an explicit list of all your systems and have one system try to pull the kqplqpo directory contents ... that cause hosts and applications to fail System and service monitoring is automation’s com-panion tool, used to notify us when systems and applications fail to operate properly Right now, we ... tejap` will need to be modified to start rsync as a daemon will need to be changed to be owned by the nobody user We don’t cover automation of Red Hat systems for this role, but wanted to point out

Ngày tải lên: 13/08/2014, 04:21

... available to be easy touse in order to help you to be very effective Sometimes UNIX tools are not easy to use, nor are they documented very well However, as with most versions ofUNIX available today, ... low-level system function As the system administrator, it will be veryimportant that you know which tools to use for a given system administrationfunction or task Also, it would be very good for the tools ... Terms of Use Trang 1766 UNIX System Administration: A Beginner’s GuideThis section reviews how to perform specific UNIX administration tasks such asadding new users to the system As such, it is

Ngày tải lên: 13/08/2014, 04:21

... 120 UNIX System Administration: A Beginner’s Guide system SUNWadmc System administration core libraries system SUNWadmfw System & Network Administration Framework system SUNWadmj ... SFWtop system SFWtop top - display information about processes In this case, we specified the top (SFTop) system-monitoring package, which provides additional information about the package. To ... directory. The following output shows a partial list of the available packages: system SFWaalib aalib - ASCII Art Library system SFWaconf autoconf - GNU autoconf system SFWamake automake - GNU automake

Ngày tải lên: 13/08/2014, 04:21

... run automatically by cron (see Cron). UNIX System Administration Rudolf Cardinal, August 1995 15 The UNIX file system Filenames and Wildcards • UNIX filenames are longer than you need them to be. ... shell. Press ^D to return to vi. UNIX System Administration Rudolf Cardinal, August 1995 13 Booting a UNIX machine This depends for the most part upon the hardware. Turn on your UNIX box and after ... system – run fsck first! 2. If the directory on which a file system is to be mounted is a symbolic link, the file system is mounted on top of the directory to which the link refers, not the link

Ngày tải lên: 13/08/2014, 04:21

... Business Process Modeling Introduction to ARIS Methodolgy Page 2 Agenda z What’s in modeling ? z Situation today z Objectives of Process Management z ARIS Framework ... All Fit Together? z Will It Work? z What Do We Need? z How Do We Do It? z Who Can Do It? z How Important Is It? z Where Does It Go? z Who’s Overloaded? z How Did We Do? Page 7 Situation today z ... Go? z Who’s Overloaded? z How Did We Do? Page 7 Situation today z Economical situation: back to the basics  Globalisation  Cost reduction  Merge/Acquisition  Performance z IT situation  Decentralized/centralized

Ngày tải lên: 07/08/2014, 02:20

... the pistons change directions are reduced As onepiston reaches top dead center, the opposing piston also is at top dead center Theimpact forces, which are 180 degrees out-of-phase, tend to cancel ... shape, can be monitored 5.3.3 Generators As with electric-motor rotors, generator rotors always seek the magnetic center of theircasings As a result, they tend to thrust in the axial direction In ... detectors, and some form of indicator are the basic ments of an industrial infrared instrument The optical system collects radiant energyand focuses it on a detector, which converts it into an

Ngày tải lên: 08/08/2014, 11:21

... levels must be compared to vibra- tion-severity charts based on peak-to-peak values. Zero-to-peak. Zero-to-peak (A), or simply peak, values are equal to one half of the peak-to-peak value. In general, ... to convert mechanical motion or force to an electronic signal In microprocessor-based analyzers,... both the vertical (top) and horizontal (bottom) data set  148 An Introduction to ... one-degree-offreedom system d 2f  Torque = Moment of intertia ¥ angular acceleration = I dt 2 ˙˙ = If In this example, three torques are acting on the disk: the spring torque, the damping torque (caused

Ngày tải lên: 08/08/2014, 11:21

... THE NEED FOR A CIRCULATORY SYSTEM THE ARRANGEMENT OF THE CARDIOVASCULAR SYSTEM THE FUNCTIONS OF THE HEART AND BLOOD VESSELS Heart Vascular System Interdependence of Circulatory and Organ Function ... parallel arrangement of INTRODUCTION TO THE CARDIOVASCULAR SYSTEM 3 RA LA RV LV Ao PA Pulmonary Circulation Systemic Circulation FIGURE 1-1 Overview of the cardiovascular system. The right side ... potential to take longer to reach threshold, thereby slowing the rate (negative chronotropy) Acetylcholine binds to muscarinic receptors (M2) and decreases cAMP via the inhibitory G-protein

Ngày tải lên: 11/08/2014, 00:20

... blood toward the heart through a system of one-way valves. Trang 7and systemic vascular function goes to ArthurGuyton and colleagues, who conducted exten-sive experiments in the 1950s and 1960s To ... prevailingstate of systemic vascular function Therefore, it is important to understand how changes insystemic vascular function affect cardiac out-put and venous return (or total systemic bloodflow ... inotropy Compensatory increases in total blood volume (Vol) and systemic vascular resistance (SVR), along with reduced venous compliance (C V ), shifts the systemic function to the right and

Ngày tải lên: 11/08/2014, 00:20

... rate is due to norepinephrine binding to 1-adrenoceptors in the sinoatrial node, whereas the secondary bradycardia is due to a baroreceptor reflex (vagal-mediated), which is in response to the increase ... 1-adrenoceptor stimulation), then decreases owing to baroreceptor reflex activation of vagal efferents to the heart Mean arterial pressure rises because norepinephrine binds to vascular 1-adrenoceptors, ... which binds to postjunctional muscarinic (M2) re-ceptors • Baroreceptors are mechanoreceptors that respond to stretch induced by an increase in pressure or volume Arterial barorecep-tor activity

Ngày tải lên: 11/08/2014, 00:20

... decrease. Therefore, baroreceptor reflexes have little influence on cerebral blood flow. Sympathetic activation shifts the au- toregulatory curve to the right, similar to what occurs with chronic ... neurotransmitter for these fibers is acetylcholine, which binds to muscarinic receptors to produce vasodilation. This branch of the autonomic nervous system has little or no influence on blood flow under resting ... Vein AV anastomosis FIGURE 7-14 Anatomy of the cutaneous circulation. Arteries within the subcutaneous tissue give rise to either arte- rioles that travel into the dermis and give rise to capillary

Ngày tải lên: 11/08/2014, 00:20

... systolic and diastolic failure reduces end-diastolic volume and increases end-systolic volume so that stroke volume is greatly reduced; end-diastolic... decreases the slope of the end-systolic ... dresses compensatory mechanisms in hy- potension caused by hemorrhage-induced hy- povolemia. The baroreceptor reflex is the first com- pensatory mechanism to become activated in response to hypotension ... baroreceptors. This acti- vates the sympathetic nervous system and in- hibits vagal influences to the heart. These changes in autonomic activity increase heart rate and inotropy. It is important to

Ngày tải lên: 11/08/2014, 00:20

... baroreceptors) and then sends excitatory or inhibitory fibers to sympathetic and parasympathetic neurons within the medulla 2 The correct answer is “b” because norepi-nephrine binds to 1-adrenoceptors ... supine to standchang-ing position Impaired baroreceptor reflexes (e.g., auto-nomic dysfunction associated with dia-betes) or reduced systemic vascular resis-tance as occurs in circulatory shock ... the vagus nerve binds to M2receptors, which decreases conduc-tion velocity Removal of vagal tone through the use of a muscarinic receptor antagonist (e.g., atropine) leads to an in-crease in conduction

Ngày tải lên: 11/08/2014, 00:20

... (total outflow resistance is reduced), which causes stroke volume to be larger and end-systolic volume to be smaller than nor-mal; however, end-systolic volume increases if the heart goes into ... increases the tance to flow across the valve because resis-tance is inversely related to the radius (r) of the valve orifice to fourth power (equivalent to valve orifice area [A] to the second power ... blood volume, or systemic vascular resistance. Trang 3afterload (particularly aortic diastolic pres-sure) enables the end-systolic volume to de-crease slightly, but not enough to overcome the

Ngày tải lên: 11/08/2014, 00:20

... equivalent stress which acts normal to a flaw that is oriented at an angle θ to the maximum principal stress Weibull aimed to reduce the prin-cipal stresses to one equivalent stress for each flaw ... failure evaluated at the stress σ and the stress σu, adjusted by a factor that represents the total number of flaws are able to cause failure In this form, we have F(σ) = 1–exp[– (σ a m–σu m)/ ... in which case the equation is referred to as a two-parameter expression 4.3 Weibull Statistics Trang 4Substituting Eq 4.3.1f into 4.3.1e, it is easy to show that the probability of failure

Ngày tải lên: 11/08/2014, 09:20

... files and folders: ! Autorun.exe. When the CD is inserted into the CD-ROM drive, or when you double-click the autorun.exe file, this file opens the CD and allows you to browse the Student Materials ... files and folders: ! Autorun.exe. When the CD is inserted into the CD-ROM drive, or when you double-click the autorun.exe file, this file opens the CD and allows you to browse the Student Materials ... Web page, open Windows Explorer, and in the root directory of the compact disc, double-click Default.htm or Autorun.exe. Introduction to ASP.NET vii BETA MATERIALS FOR MICROSOFT CERTIFIED...

Ngày tải lên: 11/12/2013, 14:15

... there to help both teacher and child? Another thing to consider is how a committee is supposed to work together. Each person has a special task to accomplish and when these people all come together, ... helpful to practice with a few of the Issue topics and to sketch out your possible responses. After you have practiced with some of the topics, you should try writing responses to some of the topics ... you need to do in your response to earn a given score. An excellent way to prepare for “Analyze an Argument” is to practice writing on some of the published topics. There is no one way to practice...

Ngày tải lên: 17/01/2014, 05:20