The Tree House Detectives

 If we do not understand this term fully then a little help from children is in order.

I watch the NASA channel a lot and they have a kids program that I have a great deal of respect for. The Tree House Detectives, is a program aimed at Elementary to Junior High Youth to inspire learning and science development. I have found a wealth of important principals that I need for problem solving.

Here is the NASA website for the program

http://scifiles.larc.nasa.gov/

Here is a explanation of it well done at Science Buddies

http://www.sciencebuddies.org/mentoring/project_scientific_method.shtml

So you got your HHO cell making gas now how can you make it more efficient.

1. What is it's efficiency?
2. What does research tell me about the result?
3. What part do I change?
4. How does it compare to Michael Faraday?
5. What is taking place chemically for what my result is?
6. Did I write down the variables and outcome of this experiment?
7. Do I need to take a continuing educations class in Physics on Electrical Engineering?

I think this method does in no way quench creativity or inspiration. I wish only for us all to be successful and when the breakthrough comes we can know exactly how it happened and not lose what has been gained.

I have a while to go before I feel that I have experimental data to offer for review, but I hope that I will. This type of work is exciteting and promising but it needs credibility in the data. I like it when the experimenter talks out what they have went thought and describes the results. A standard benchmark to compare results with enough information to duplicate the experiment. That is called "peer review". Laboratory Instrument are so rarely used because of budget constraints. There are ways of making measurements or getting in contact with a high school chemistry teacher who might even want to invole there class. A key that unlocks the door you have been struggling with might only be kept by someone else.

We need to be standing on the shoulders of giants not reinventing the wheel each time. This blog is for me but I hope it encourage you too.

Since I am broad-minded enough to link to the Huffington Post even though I find Arianna's site totally loathsome (my site is "antiarianna.wordpress" you know), I would just encourage you to try a little experiment to see what censorship is all about.

Pretend you are a Republican (it's the Dems who need to know this) and try to make some anti-Obama comments over at Huff.  See if they get posted.

If you don't know how to get inside the character, cannot find the role of an authentic "Obamessiah" critic, use some of mine. 

I'd be interested to hear how you fare.  I was totally censored once Obama got the Dem ticket. 

"Never is heard a discouraging word" -- over there -- apparently their guy cannot take the heat. Poor Baby.

Photo credit click.

Doua scenarii de cosmar, doua apocalipse. Sunt ideile care au facut inconjurul lumii odata cu preconizata lansare de miercuri, 10 septembrie, a unei masinarii capabile sa aduca nu atat disparitia Terrei, cat distrugerea totala a intregului Univers, anunta ziaristii britanici de la DailyMail.

Nu este un scenariu SF ci pura realitate. Cauza unor astfel de scenarii? - o masina gigantica, ce reprezinta cel mai scump si cel mai mare experiment stiintific din istorie, “Large Hadron Collider”, o masina ce va fi pusa in functiune in cursul zilei de miercuri. Desi a fost creat pentru a raspunde celor mai arzatoare intrebari ale omenirii, aceasta ar putea, in egala masura, sa distruga intregul Cosmos. Impresionanta masinarie, care a costat peste 4 miliarde de lire sterline, are 29 de kilometri lungime si se afla la o adancime de 92 de metri. A fost construita in apropierea Genevei si este cel mai puternic aparat creat vreodata pentru a deslusi misterele atomului, a fortelor si particulelor care alcatuiesc universul, in speranta ca mecanismele interioare ale materiei si energiei vor fi revelate..

Nu toti cercetatorii sunt, insa, de acord cu pornirea acestui aparat. Tot mai multe voci sustin ca exista sanse ca aparatul sa nu functioneze corespunzator. Doua scenarii posibile au fost elaborate: primul ar fi crearea unei mini gauri negre, care va inghiti pamantul din interior, iar cel de-al doilea este o catastrofica reactie in lant, care va distruge intregul Univers. Inca din 1994, de cand a inceput constructia aparatului, au existat protestatari care au sustinut ca reconstructia Big Bang-ului, care a avut loc cu 13 700 milioane de ani in urma, prezinta riscul ca un cataclism de proportii cosmice sa se produca.
Specialistii de la CERN (Organizatia Europeana de Cercetare Nucleara) resping, insa, aceste scenarii, sustinand ca proiectul a fost elaborat nu pentru a distruge universul, ci pentru a-i afla cele mai ascunse secrete. Singura lor grija este ca aparatul este prea mic pentru a putea sustine un asemenea proces. Insa daca proiectul ar fi un succes, saltul stiintei va fi unul uimitor.

Pana miercuri, cand vom afla cine a avut dreptate, nu putem decat sa tinem degetele incrucisate si sa speram ca oamenii de stiinta implicati in proiect si-au facut corect calculele.

Comentariu personal : Nu de mult am vazut intr-un documentar, "The monster of the Milky Way" parca, ce s-ar intampla daca o persoana ar fi atrasa intr-o gaura neagra :D . Cum ar fi sa avem cu totii sansa sa experimentam, huh? ... sa mai ziceti ca stiinta nu face nimic pt noi! :P

Mina ögon ser fantastiska ut idag så jag måste fortsätta. Idebenone i love you!

Ich habe keine Ahnung ob ich abgenommen oder zugenommen habe. Ich weiss auch nicht ob ich erhoehte oder niedrige Werte in weiss-ich-nicht-was habe. Ich weiss nur, dass sich der Koerper daran gewoehnt sich scheisse zu fuehlen. Wobei ich ja glaube, dass die Entgiftung vielleicht wirklich nicht schadet.

Hier noch ein Bild von gestern nach dem Iftar-Buffet in einem Libanesischen Restaurant. Ich habe das halbe Buffet leer gegessen, alle angebotenen Dessert verputzt und anschliessend bei einer Rose-Flavour Shisha meinen dicken, runden Bauch gestreichelt.

CSCI317/MCS9317 Database Performance Tuning, Spring'2008

Experimented and described by: Wenzheng Chen, SITACS, 3.210 ext.4339, wchen@uow.edu.au,

Experiment 4.5

How to use Automatic Workload Repository (AWR) ?

Turn the system on (if it is off) and logon as XP user. Download and uncompress SQL scripts used in this experiment.

The Automatic Workload Repository (AWR) collects, processes, and maintains the performance statistics for problem detection and self-tuning purposes. This data is stored both in transient memory and in the database. The gathered data can be displayed in both reports and views.

The statistics collected and processed by AWR include:

· Object statistics that determine both access and usage statistics of database segments

· Time model statistics based on time usage for activities, displayed in the V$SYS_TIME_MODEL and V$SESS_TIME_MODEL views

· Some of the system and session statistics collected in the V$SYSSTAT and V$SESSTAT views

· SQL statements that are producing the highest load on the system, based on criteria such as elapsed time and CPU time

· Active Session History (ASH) statistics, representing the history of recent sessions activity

The STATISTICS_LEVEL initialization parameter must be set to the TYPICAL or ALL to enable the Automatic Workload Repository. Connect as a user SYSTEM and execute the following statement to find the present value of a parameter STATISTICS_LEVEL.

show parameter STATISTICS_LEVEL

If the value is set to BASIC, then you can manually capture AWR statistics using procedures in the DBMS_WORKLOAD_REPOSITORY package. To change a value of parameter STATISTICS_LEVEL execute the following statements while connected as a user SYSTEM:

ALTER SYSTEM SET STATISTICS_LEVEL = 'TYPICAL';

show parameters STATISTICS_LEVEL;

AWR is build-in to Oracle database kernel and does not require any configuration. It is running immediately after you create your database. Even if you do not license it, it is running and consuming resources to gather system statistics once per hour to its internal repository. ADDM as one of the intelligent self-tuning utilities also could be support by using AWR.

STATSPACK (still live in oracle 11g) requires you manually do some configuration like scheduling its STATSPACK.SNAP as a job in order to automate statistic gathering.

The AWR captures more information than STATSPACK including: tablespace usage, filesystem usage and operating system statistics. AWR statistics are accessible to external users, who can build their own performance monitoring tools, routines and scripts.

How to discover the internal structures of AWR?

“The AWR is very comprehensive and there are literally thousands of distinct metrics that can be examined” (by D.Burleson).

Well, AWR actually uses several Oracle internal tables (the families of WRM$_* and WRH$_* tables) to store the collected statistics, which are stored under the SYS schema in the SYSAUX tablespace. Alternatively, you can access those statistics from the dba_hist_* views by joining into the dba_hist_snapshot view (the main anchor for the AWR history views), or by querying some specified V$ views such like V$SYSSTAT or V$SYS_TIME_MODEL with different query purposes. A document awr_wivComponents.pdf present the AWR structures with its related components under Oracle 10g architecture.

AWR contains two types of oracle internal tables:

· Metadata Tables (WRM$_*):

These relational tables are used to control, process, and describe the Workload Repository tables. For example, Oracle uses the metadata tables to determine when to perform snapshots, and what to capture to disk.

· Historical Statistics Tables (WRH$_*):

These relational tables store important historical statistical information about the database in the form of periodic snapshots. Each snapshot is a capture of the in-memory database statistics data (X$) at a certain point in time.

Physically, the AWR statistics can be divided into the following categories of tables:

· Datafile I/O Statistics

· General System Statistics

· Concurrency Statistics

· Instance Tuning Statistics

· SQL Statistics

· Segment Statistics

· Undo Statistics

· Time- Model Statistics

· Recovery Statistics

· RAC Statistics

A2  How to access AWR views ?

When we are talking about the AWR related views, we mostly have to consider which step we probably can go through. The dba_hist_* views provide the source of data and wealth of customizable reports for identification of trends and time-series performance optimization.

Here are the views available for the workload repository:

· V$ACTIVE_SESSION_HISTORY - Displays the active session history (ASH) sampled every second.

· V$METRIC - Displays metric information.

· V$METRICNAME - Displays the metrics associated with each metric group.

· V$METRIC_HISTORY - Displays historical metrics.

· V$METRICGROUP - Displays all metrics groups.

· DBA_HIST_ACTIVE_SESS_HISTORY - Displays the history contents of the active session history.

· DBA_HIST_BASELINE - Displays baseline information.

· DBA_HIST_DATABASE_INSTANCE - Displays database environment information.

· DBA_HIST_SNAPSHOT - Displays snapshot information.

· DBA_HIST_SQL_PLAN - Displays SQL execution plans.

· DBA_HIST_WR_CONTROL - Displays AWR settings.

Oracle gives users the option of accessing AWR metadata or historical data manually using any ad-hoc query tool like SQL*Plus by performing queries against the following database objects:

· The dba_hist_* dictionary views provide access to historical statistical data stored in the AWR. The AWR stores cumulative values available through dynamic performance views like V$SYSSTAT. Instance restart resets these cumulative values in V$ memory views. However, the AWR keeps cumulative statistics as well as delta values that show the change of statistics over time.

· The v$metric* views provide metric statistics which show users the rate of change of some particular statistic. The metrics in Oracle can be measured against such units as time, transaction number, database or user calls, etc. One specific example would be the parse number per second. The metric views are organized by Oracle in groups as system, session, file, event, tablespace, etc.

· The v$active_session_history view provides access to a sampled data. The sampled data shows the activity status of all active database sessions at the given moment. The content of v$active_session_history view is also preserved by the AWR.

If we would like to get more information then it can be extracted from WRM$_* and WRH$_* tables. We can get all data from WRM$_SNAPSHOT table instead of from dba_hist_snapshot view. Connect as a user SYS (and not as SYSTEM !) and execute the following statements:

desc WRM$_SNAPSHOT

Name Null? Type

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

SNAP_ID NOT NULL NUMBER

DBID NOT NULL NUMBER

INSTANCE_NUMBER NOT NULL NUMBER

STARTUP_TIME NOT NULL TIMESTAMP(3)

BEGIN_INTERVAL_TIME NOT NULL TIMESTAMP(3)

END_INTERVAL_TIME NOT NULL TIMESTAMP(3)

FLUSH_ELAPSED INTERVAL DAY(5) TO SECOND(1)

SNAP_LEVEL NUMBER

STATUS NUMBER

ERROR_COUNT NUMBER

BL_MOVED NUMBER

SNAP_FLAG NUMBER

desc dba_hist_snapshot

Name Null? Type

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

SNAP_ID NOT NULL NUMBER

DBID NOT NULL NUMBER

INSTANCE_NUMBER NOT NULL NUMBER

STARTUP_TIME NOT NULL TIMESTAMP(3)

BEGIN_INTERVAL_TIME NOT NULL TIMESTAMP(3)

END_INTERVAL_TIME NOT NULL TIMESTAMP(3)

FLUSH_ELAPSED INTERVAL DAY(5) TO SECOND(1)

SNAP_LEVEL NUMBER

ERROR_COUNT NUMBER

Another example, the internal creation syntax for the dba_hist_sysstat view is built from wrm$_snapshot,wrh$_sysstat and dba_hist_stat_name.

So, so, so (so what?) …. Exciting? You have one more option to dive into the new AWR tables. Just keep in mind they could be equivalent or you can explore more evidence by yourself.

A3  How to set and how to list AWR parameters ?

To list the available snapshots connect as a user SYSTEM and execute a script file list_awrsnaps.sql. The scripts outputs a long list of snapshots taken automatically every 60 minutes over a period of one week. A default frequency of taking snapshots and snapshot retention period are set at installation of the system. It is possible to adjust the interval, retention, and captured top SQL of snapshot generation. A parameter INTERVAL determines how often the snapshots are automatically taken. A parameter RETENTION determines how long the snapshots are stored in the workload repository. A parameter TOPNSQL setting affects the number of Top SQL to flush for each SQL criteria (Elapsed Time, CPU Time, Parse Calls, Shareable Memory, and Version Count). To adjust the settings, use a procedure MODIFY_SNAPSHOT_SETTINGS. For example, the following execution of the procedure sets a retention period to 43200 minutes (30 days), the interval between each snapshot to 30 minutes, and the number of Top SQL to flush for each SQL criteria to 100. If NULL is specified, the existing value is preserved.

EXECUTE DBMS_WORKLOAD_REPOSITORY.MODIFY_SNAPSHOT_SETTINGS(

retention => 43200,

interval => 30,

topnsql => 100 );

The current settings of AWR parameters are included in a view DBA_HIST_WR_CONTROL. While connected as a user SYS execute a script list_awrparameters.sql to list the current values of AWR parameters.

A4  How to take a snapshot ?

Connect as a user SYS and execute a script to list list_awrsnaps.sql the available snapshots. To take a new snapshot execute the following statement:

EXEC DBMS_WORKLOAD_REPOSITORY.CREATE_SNAPSHOT;

List all snapshots again. Connect as a user CSCI317 and execute the following statement:

SELECT COUNT(*)

FROM LINEITEM;

Take one more snapshot while connected as a user SYS.

A snapshot is taken by the execution of snap procedure CREATE_SNAPSHOT of DBMS_WORKLOAD_REPOSITORY package. It allows for the snapshots from within the user applications e.g. PL/SQL stored procedures and functions, embedded SQL applications, JDBC applications, and the other applications that allow for execution of SQL statement.

A5 How to generate and how to read AWR reports ?

Without ADDM reports, we can actually generate the more detailed reports by AWR itself. Oracle provides two scripts to produce workload repository reports (awrrpt.sql and awrrpti.sql). They are similar in format to the statspack reports and give the option of HTML or plain text formats. The two reports give essential the same output but the awrrpti.sql allows you to select a single instance. The reports can be generated as follows:

@$ORACLE_HOME/rdbms/admin/awrrpt.sql

@$ORACLE_HOME/rdbms/admin/awrrpti.sql

The scripts prompt you to enter the report format (html or text), the start snapshot id, and the end snapshot id and the report filename. The resulting report can be opened in a browser or text editor accordingly. You can find the sample reports in

AWR_ReportSampleHTML.html or AWR_ReportSampleText.txt.

Connect as a user SYS and execute the scripts on your own and try to generate the reports from the last two snapshots. The scripts will ask you to specify some details such like "Report Type","number of days of snapshots","the Begin and End Snapshot Ids","Report Name" and so on. The scripts have automatically grabbed all information for you to select. Just follow by the script instructions. It is so easy to generate a full detailed AWR report.

A6  How to use AWR to performance tuning ?

In order to adjust the size of data buffer cache to the sizes of relational tables accessed in the script we reduce the size of data buffer cache to 100 Mbytes. Connect as a user SYS and execute a statement:

ALTER SYSTEM SET db_cache_size=100M;

SHOW PARAMETER db_cache_size

We shall apply AWR to the performance tuning of JDBC application included in task7.java. Connect as a user SYS and take a snapshot:

EXEC DBMS_WORKLOAD_REPOSITORY.CREATE_SNAPSHOT;

Then, compile and run the application:

javac task7.java

java task7

Next, while connected as a user SYS take the second snapshot and execute a script list_awrsnaps.sql to find the numbers of the last two snapshots. Generate a report in the following way:

@$ORACLE_HOME/rdbms/admin/awrrpt.sql

The report lists a large number of almost identical statements stored in a library cache.

CPU Elapsed CPU per % Total

Time (s) Time (s) Executions Exec (s) DB Time SQL Id

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

0 0 1 0.0 1.9 d8asj875rzddk

SELECT COUNT(*) FROM PARTSUPP JOIN SUPPLIER ON PS_SUPPKEY = S_SUPPKEY JOIN PART

ON PS_PARTKEY = P_PARTKEY JOIN NATION ON S_NATIONKEY = N_NATIONKEY WHERE N_

NAME IN ('JAPAN', 'PERU', 'AUSTRALIA' ) AND S_SUPPKEY = 81

0 0 1 0.0 1.9 cz9109atqxcsj

SELECT COUNT(*) FROM PARTSUPP JOIN SUPPLIER ON PS_SUPPKEY = S_SUPPKEY JOIN PART

ON PS_PARTKEY = P_PARTKEY JOIN NATION ON S_NATIONKEY = N_NATIONKEY WHERE N_

NAME IN ('JAPAN', 'PERU', 'AUSTRALIA' ) AND S_SUPPKEY = 1

0 0 1 0.0 1.9 gwcd3mcupa9wm

SELECT COUNT(*) FROM PARTSUPP JOIN SUPPLIER ON PS_SUPPKEY = S_SUPPKEY JOIN PART

ON PS_PARTKEY = P_PARTKEY JOIN NATION ON S_NATIONKEY = N_NATIONKEY WHERE N_

NAME IN ('JAPAN', 'PERU', 'AUSTRALIA' ) AND S_SUPPKEY = 177

...                                 ...                                 ...

SQL parsing parameters included in Instance Activity Stats section of the report reveal a large number of parsing activities performed by the system while processing the application.

Statistic                           Total  per Second    per Trans

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

parse count (failures)              0      0.0           0.0

parse count (hard)                  2      0.0           0.1

parse count (total)                 674    9.7           44.9

parse time cpu                      4      0.1           0.3

parse time elapsed                  4      0.1           0.3

Latch Activity section confirms the intensive activities in Library Cache area (see below).

Get           Get    Slps   Time   NoWait        NoWait

Latch Name                   Requests      Miss   /Miss  (s)    Requests      Miss

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

library cache                15,337        0.0    N/A    0      0             N/A

library cache lock           6,918         0.0    N/A    0      0             N/A

library cache lock alloc     54            0.0    N/A    0      0             N/A

library cache pin            5,868         0.0    N/A    0      0             N/A

library cache pin alloca     16            0.0    N/A    0      0             N/A

We shall optimize the application to reduce the total number of parsing and optimizations and reduce traffic over Library Cache. The optimized application is included in opttask7.java.

Connect as a user SYS flush shared pool in order to remove the hundreds of almost identical SQL statements.

ALTER SYSTEM FLUSH SHARED_POOL;

Next, while connected as a user SYS take a snapshot:

EXEC DBMS_WORKLOAD_REPOSITORY.CREATE_SNAPSHOT;

Then, compile and run the optimized application:

javac opttask7.java

java opttask7

Next, while connected as a user SYS take the second snapshot and execute a script list_awrsnaps.sql to find the numbers of the last two snapshots. Generate a report in the following way:

@$ORACLE_HOME/rdbms/admin/awrrpt.sql

A large number of almost identical SELECT statements disappeared from a library cache.

CPU Elapsed CPU per % Total

Time (s) Time (s) Executions Exec (s) DB Time SQL Id

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

1 1 499 0.00 43.0 dzqf50vy745f7

SELECT COUNT(*) FROM PARTSUPP JOIN SUPPLIER ON PS_SUPPKEY = S_SUPPKEY JOIN PART

ON PS_PARTKEY = P_PARTKEY JOIN NATION ON S_NATIONKEY = N_NATIONKEY WHERE N_

NAME IN ('JAPAN', 'PERU', 'AUSTRALIA' ) AND S_SUPPKEY = :1

SQL parsing parameters included in Instance Activity Stats section of the report reveal a significantly small number of parsing done by the system while processing the application.

Statistic Total per Second per Trans

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

parse count (hard) 55 1.7 5.0

parse count (total) 255 7.9 23.2

parse time cpu 5 0.2 0.5

parse time elapsed 7 0.2 0.6

Latch Activity section confirms less intensive activities in Library Cache area (see below).

Get Get Slps Time NoWait NoWait

Latch Name Requests Miss /Miss (s) Requests Miss

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

library cache 5,952 0.0 0.0 0 0 N/A

library cache load lock 38 0.0 N/A 0 0 N/A

library cache lock 1,696 0.0 N/A 0 0 N/A

library cache lock alloc 54 0.0 N/A 0 0 N/A

library cache pin 2,861 0.0 N/A 0 0 N/A

When finished, reset the size of data buffer cache to its original value:

ALTER SYSTEM SET db_cache_size=332M;

SHOW PARAMETER db_cache_size

A7  How to truncate a range of snapshots ?

While connected as a user SYS execute the script list_awrsnaps.sql to list all snapshots that currently exist in the system.

Then, to remove all snapshots in a range from 165 to 167 (you may have to use different numbers) execute the following statement:

EXECUTE DBMS_WORKLOAD_REPOSITORY.DROP_SNAPSHOT_RANGE

(165,167)

End of experiment 4.5

References:

"Oracle Tuning: The Definitive Reference" by Donald Keith Burleson

Oracle Official Document.

Doua scenarii de cosmar, doua apocalipse. Sunt ideile care au facut inconjurul lumii odata cu preconizata lansare de miercuri, 10 septembrie, a unei masinarii capabile sa aduca nu atat disparitia Terrei, cat distrugerea totala a intregului Univers, anunta ziaristii britanici de la DailyMail.
Nu este un scenariu SF ci pura realitate. Cauza unor astfel de scenarii? - o masina gigantica, ce reprezinta cel mai scump si cel mai mare experiment stiintific din istorie, “Large Hadron Collider”, o masina ce va fi pusa in functiune in cursul zilei de miercuri. Desi a fost creat pentru a raspunde celor mai arzatoare intrebari ale omenirii, aceasta ar putea, in egala masura, sa distruga intregul Cosmos. Impresionanta masinarie, care a costat peste 4 miliarde de lire sterline, are 29 de kilometri lungime si se afla la o adancime de 92 de metri. A fost construita in apropierea Genevei si este cel mai puternic aparat creat vreodata pentru a deslusi misterele atomului, a fortelor si particulelor care alcatuiesc universul, in speranta ca mecanismele interioare ale materiei si energiei vor fi revelate..

Nu toti cercetatorii sunt, insa, de acord cu pornirea acestui aparat. Tot mai multe voci sustin ca exista sanse ca aparatul sa nu functioneze corespunzator. Doua scenarii posibile au fost elaborate: primul ar fi crearea unei mini gauri negre, care va inghiti pamantul din interior, iar cel de-al doilea este o catastrofica reactie in lant, care va distruge intregul Univers. Inca din 1994, de cand a inceput constructia aparatului, au existat protestatari care au sustinut ca reconstructia Big Bang-ului, care a avut loc cu 13 700 milioane de ani in urma, prezinta riscul ca un cataclism de proportii cosmice sa se produca.
Specialistii de la CERN (Organizatia Europeana de Cercetare Nucleara) resping, insa, aceste scenarii, sustinand ca proiectul a fost elaborat nu pentru a distruge universul, ci pentru a-i afla cele mai ascunse secrete. Singura lor grija este ca aparatul este prea mic pentru a putea sustine un asemenea proces. Insa daca proiectul ar fi un succes, saltul stiintei va fi unul uimitor.

Pana miercuri, cand vom afla cine a avut dreptate, nu putem decat sa tinem degetele incrucisate si sa speram ca oamenii de stiinta implicati in proiect si-au facut corect calculele.

I also fell asleep during the psychology research experiment I was participating in. Hope I didn't ruin the researcher's results. 

At least it's Friday and it's my last day at the radiology internship. I'm glad that it's over. I did learn quite a bit though, when I think about it. I learned how hospital exam scheduling works and just administration side of things. Also learned that I definitely don't want to work on this end of the health field. I don't think I can deal with desk job. I don't know how my mom does it, 9-5 everyday in a (messy) cubicle. I would go insane. 

I was thinking about alternative jobs that other day, upon realizing that I can't stand a desk job, and I couldn't really think of anything I'd be interested in/qualified for besides physician/nurse. I mean, I definitely enjoy reading things about design, fashion, and cosmetics, but I don't see a career in that. I'm a psychobio major who doesn't like writing. Maybe I'll fulfill my father's dream of my becoming some kind of painter/potter/glassblower and then he'll manage my shop for me. Yeah, psychobio doesn't quite apply to that either. 

My thumb is callused from playing Soul Caliber 4.

The title of this post is my philosophy about 'behavior.' Before I was a nurse I studied Psychology, and hold a Bachelor's Degree in that subject. Over the twelve years I worked in this field I developed this philosophy, and 98% of the time it turned out to be right on target.

Don't take my word for it, try it out for yourself. Do a tiny experiment: When you think someone is lying to you, or being dishonest in some other manner, confront them! Pay close attention to the degree of hostility with which they respond. It usually matches pretty closely with how close you are to the truth, i.e., real close results in a really hostile response, kind of like the responses I have gotten to my book, and I not only got close to the truth, I published pictures and documents of it! :)

Regards,
Looking4trth

am purtat cu

mine un cutit

eram in clasa a

opta cred

mama gasise pe

strada niste

metanii

din acelea care se

fac in inchisoare si

mi le-a daruit

cutitul il cumparasem cand

am fost in

budapesta

am intrat intr-un

magazin de arme

am vazut un cutit cu

manerul din metal

taisul neascutit

zimti pe partea cealalta

am zis ca tb

sa fie al meu

cand trebuia sa ma

urc in avion a

sunat detectorul de metale

tipul m-a intrebat daca

am ceva metal cu mine

aveam monede in

buzunarul in care

aveam si cutitul

am scos monedele

tipul a dat din mana

si mi-a zis sa

trec repede mai departe

cand am ajuns acasa era vara

peste cateva zile

mi-am pus metaniile in

buzunar

cutitul in geanta

si am iesit

aveam parul tuns f scurt si

blugii rupti

am stat o vreme in parc

am hranit porumbeii

dupa aia am intrat in biserica

am ingenuncheat si

am citit o foaie lipita pe

perete / despre cum

tb sa fie

starea ta la

spovedanie

am stat un timp in genunchi si

am tacut

cu metaniile in mana

tipa care vindea lumanari mi-a

zambit

pe drum inspre casa

s-au apropiat de mine doi tipi

stiam ca

tb sa fiu bun

tb sa fiu pasnic

ca daca o sa fiu asa

n-o sa tb sa ma

bat cu ei

erau m mari

pe la vreo 19 ani

ambii

m-au intrebat daca ascult rock

asta era primul

lucru pe care il intrebau pe atunci

cand voiau sa te bata

am spus ca

ascult multe

'ce ai in geanta?'

am deschis geanta

era acolo o carte

cutitul si

metaniile

mi-au zis ca vor

sa se uite la ele

unul a luat cutitul

celalalt metaniile

s-au intors cu spatele la

mine si

au pornit inspre parc

'da-mi metaniile'

'o sa te lovesc cu

ele peste fata daca

nu pleci'

'da-mi cutitul' ii

spun celuilalt

'o sa te tai cu el pe obraz'

am respirat adanc si

m-am dus in

scuarul de alaturi

ei radeau

eu am stat linistit asezat pe

scarile teatrului

Experimentul Big Bang risca sa duca la formarea de gauri negre ce ar putea distruge planeta, avertizeaza oamenii de stiinta.
Numaratoarea inversa pana la experimentul Big Bang, programat pe 10 septembrie, in celebrul accelerator din Geneva, ii pune pe jar pe oamenii de stiinta. Cativa dintre ei avertizeaza ca Big Bang va duce la crearea de gauri negre ce vor distruge planeta, motiv pentru care incearca, pe ultima suta de metri, sa-l opreasca in instanta. Desi Laboratorul European pentru Fizica Particulelor Elementare (CERN) a dat asigurari ca aceste gauri negre vor disparea, la fel de repede cum au aparut, scepticii ii acuza pe oamenii de stiinta ai organizatiei ca se joaca de-a Dumnezeu si sustin ca nimeni nu poate oferi garantii ca gaurile negre nu vor creste rapid in dimensiune si nu vor devora Pamantul intr-o clipita, potrivit “The Sun”.
Peste noua zile, va avea loc prima incercare de a circula un fascicul de protoni prin acceleratorul Large Hadron Collider (LHC). Experimentul, care isi propune sa recreeze conditiile pe care le-a avut universul la o trilionime de secunda dupa explozia initiala, Big Bang, va conduce la crearea de gauri negre care vor distruge intreaga planeta, sunt de parere cativa oameni de stiinta. Acestia incearca sa opreasca in instanta cel mai puternic experiment facut vreodata in celebrul accelerator Large Hadron Collider (LHC), aflat la 100 de metri adancime sub orasul Geneva, la granita dintre Elvetia si Franta. Din tabara scepticilor face parte si profesorul Otto Rossler, de la Universitatea Eberhard Karls din Tubingen, Germania. Impreuna cu cativa colegi, el a depus o plangere la Curtea Europeana a Drepturilor Omului de la Haga impotriva celor 20 de tari care finanteaza proiectul CERN, cel mai mare laborator de accelerare si studiere al particulelor elementare din lume. “Este cat se poate de plauzibil ca aceste mici gauri negre sa supravietuiasca, sa creasca si sa inghita planeta din interior catre exterior”, a declarat profesorul, citat de “The Sun”. CERN a sustine, insa, ca experimentul “nu va produce nimic care nu se manifesta in mod obisnuit in natura”. Organizatia insista asupra importantei experimentului, menit sa recreeze conditiile pe care le-a avut universul la o trilionime de secunda dupa Big Bang si sa dezlege secretele materiei care alcatuieste tot ceea ce este cunoscut in Univers, noteaza “The Sun”. In data de 10 septembrie, supranumita si “ziua butonului rosu”, acceleratorul Large Hadron Collider ar putea crea gauri minuscule in spatiu, care sa permita o forta limitata de calatorie in spatiu. In cazul in care testarea se incheie cu succes, aceasta ar fi totodata prima “masina a timpului” creata vreodata. Cercetatorii de la CERN se asteapta sa descopere cu ajutorul controversatului experiment, noi particule de materie, dar si noi dimensiuni.

21 cm cosmology

The main thrust of this seemed to be that you can observe the reionization of the universes hydrogen at different times in the past by looking at different red-shifed 21 cm photons.  He liked it to taking a slice of swiss cheese, depending on your slice (what $latex \lambda$ you observe), you will see a different amount of the universe ionized.  Here is a figure:

We are far off the right side of the image.  I'm not sure I liked the swiss cheese analogy too much, you couldn't take it very far.  I think all that he meant was that if you slice the cheese, the hole are different for each slice.  Similarly, if you took at a slice of the universe (say $latex \lambda_1$) the amount of the universe that has been reionized will be different than the amount in a different slice (at say, $latex \lambda_2$).

However, if you take the analogy a little bit further, the cheese holes open and close.  This doesn't happen in the universe.  Once a region has been re-ionized, it stays re-ionized.  It is more like taking slices of a group of stalagmites, starting at the top and moving toward the ground.  Or, drawing from a recent experience of mine, like slicing the Badlands from the top toward the bottom in an area that ends in a trough rather than the plains.  But, the swiss cheese is a little more common, and easy to recognize.  You just can't take it too far.

He covered so much material, I don't remember it all in this topic that I don't remember it all!

Super Massive Black Holes

The idea is to image the largest black hole on the night sky.  That is the one at the core of the Milky Way.  It may not be the closest, but because of it's great mass, it subtends that largest angle on the sky.  And when I say largest angle, I mean 50 micro radians (a tiny amount). That's like looking at a pea at 200 meters!

We won't be able to actually see the black hole, but we can see it's shadow.  It will be blocking the hot accretion disk behind the hole.  Avi's part of that project was to predict what it might look like, depending on various models of the accretion disk, the mass of the black hole and general relativity.  That is to say his job was to make some pretty pictures.  He showed us those, and they were pretty.

Questions

I came up with a couple of questions.

1. how did the last scattering surface evolve?
   In the end I decided not to ask this question.  I asked a couple of my fellow students and they were able to clear it up some for me.  In the formulating of that question I realized I was confused about the cosmic dark age.  That is the topic that Avi was talking about in the first section.
2. what angle are we looking at the black hole in the pretty pictures you showed?
   I did ask this one, and Avi took us back and explained more about that.  Also about how the pictures vary with more than just the angle we see the object at: the model for the accretion disk too.  They have produced a library of such images and movies.

At the end of the talk there was a general Q&A time, then a students only Q&A time.  I liked the student only Q&A time because I didn't feel quite as embarrassed to ask my simple question.  Also the questions from the other students were good.  Eric asked about if the 21 cm observations could help distinguish between models for the first stars that had dark matter as their power source (called Dark Stars).  Avi explained that he didn't work on that, but suspected that they could.  Dark Stars are a very new idea.

Plus: You set your own budget,  your days and you CONTROL it anytime.
Minus: When you narrow your target and be more specific, the audience shrinks rapidly!

I would suggest you pay what facebook recommends you per click so that you  get a good placement. Hit us up with questions if you need help setting your ad up.  We help everyone for free food ;) zorluhan@gmail.com

Half life'çılar bilirler, Black Mesa Research Facility'deki dünyanın neredeyse sonunu getiren, The Anomalous Materials Analysis Test'ini :) Nostalji olsun diye bu müthiş deneyimi arada bir izliyorum youtube'dan. İzlemeyen varsa kesin izlesin. Bilindiği gibi 4-5 gün sonra Avrupa'nın en büyük parçacık fiziği araştırma merkezi olan CERN'de büyük deneye start verilecek. Gerek mekan gerek konsept göz önünde bulundurulduğunda Half life'ın Black Mesa araştırma merkezinin gerçekleştirdiği deney açısından benzerlikler taşıyor bu deney de. Biliminsanlarının her türlü tedbiri aldıklarını ve deneyin sonucunda olumsuz bir şey olmayacağını biliyoruz elbet ama istemeden de olsa "ya bişey olursa" korkusundan kendimizi alamıyoruz.. Bunu düşünürken Half life'ın yaratıcısı valve ekibinin nasıl ileri görüşlü, insana gerçeklik hissi veren bir oyun yaptıklarını da düşünmeden edemiyorum.

Hatte ehrlich gesagt die ganze Zeit wenig Nerv und erfreulicherweise auch wenig Veranlassung mich hier im Raucherclub rumzutreiben, denn die Zigarette hat geschmeckt, wenn mir danach war; und den ganzen Sommer hatte man mit den imgrunde albernen Einschränkungen wegen Rauchverbot zum Glück nur wenig zu tun. Draußen ist es bei milden Temperaturen eh schöner als drinnen. Zudem gab das Urteil einen gewissen Auftrieb, da die Richter fürs erste das Existenz- und Eigentumsrecht des Wirtes höher bewerteten als einen wissenschaftlich verbrämten, jedoch durch und durch fadenscheinigen umfassend zu ‚gewährleistenden‘ Gesundheitsschutz am Arbeitsplatz, den es durchzusetzen gälte. Nach dieser Logik könnte man auch allen Fernfahrern auf ihren monotonen Fernfahrten per Gesetz das Rauchen verbieten. Aber die solche Gesetze machen, kümmern sich einen feuchten Kehrricht darum, wie sich das dann für die Betroffenen anfühlt. Bei langen Strecken ist mancher mit Zigarette sicher konzentrierter als ohne. Manches, wenn nicht gar vieles, was heute abläuft, ist wie ein böser Traum, bei dem man irgendwann aufwacht mit der beklemmenden Vorstellung, dies alles hier ist ein irres und aberwitziges Experiment und wir sind dabei die Versuchskaninchen… Aber diese Befürchtungen sind längst nicht von der Hand zu weisen. Bei dem Tempo, mit dem sich alles dreht und immer schneller dreht, kann einiges geschehen, vor allem an Unerwartetem und an wenig behaglichen Entwicklungen, die damm schnell um sich greifen können. Wer sich in Geschichte auskennt und in der Geschichte umkuckt, sieht gleich, daß es nicht beständig friedlich in derselben zugegangen ist und daß nach einer Periode der Stabilität und des Friedens immer früher oder später etwas gegenläufiges kommt, das durch anhaltende Dekadenz und idiologische Blindheit bedingt und gefördert mehr und mehr um sich greift und irgendwann höchst unfriedlich wird. Und vor diesem Hintergrund legen sich unsere Politiker für das Rauchverbot ins Zeug, verlangen sogar jetzt die nicht allein bei Kindern geliebten Überraschungseier zu verbieten oder möchten eine andere Kennzeichnung der Automobile, eben die Stadt oder den Kreis nicht mehr als knappe Buchstabenfolge kenntlich zu machen, damit sich niemand wegen seines Kennzeichens herabgesetzt und diskriminiert fühlen muß. Ein Offenbacher, der vor einem herfährt, muß sich schon gefallen lassen, egal ob sein Fahrstil das hergibt oder nicht, daß man das Kennzeichen OF mit eim gewissen Behagen als eben Ohne Führerschein übersetzt. Schon irgendwie ein Gipfel der Traumtänzerei und fast der oberste Wert in dieser wertelosen und von nicht wenigen als wertlos empfundenen Zeit ist dieser Ansatz nämlich allüberall Gerechtigkeit herstellen und jede Art von Diskriminierung abschaffen zu vollen. Dabei ist die Natur ganz anders gestríckt, denn sie ist auf Unterschiede aus und alles anders als gerecht. Daher spielt auch der Faktor Konkurrenz so eine große Rolle, aber bei diesem ewigen Spiel sind die Bewerber alles andere als mit gleichen Fähigkeiten, Begabungen usw. ausgestattet. Am Ende noch ein Hinweis in eigener Sache wie auch ein Bezug zum Thema. Am Freitag um 20.15 Uhr im LI-LA Literatur-Laden eine interessante Hesse-Lesung mit dem Titel Das erste Abenteuer mit frühen Geschichten und Gedichten. Ausführlicher auf der eoscheinder Webseit beschrieben, aber aus der Titelgeschichte zum Abschluß nun dieser Satz, der jedem Raucher aus der Seele sprechen dürfte.

What makes good people do bad things? How can moral people be seduced to act immorally? Where is the line separating good from evil, and who is in danger of crossing it? Renow-ned social psychologist Philip Zimbardo has the answers, and in The Lucifer Effect he explains how---and the myriad reasons why---we are all susceptible to the lure of "the dark side." Drawing on examples from history as well as his own trailblazing research, Zimbardo details how situational forces and group dynamics can work in concert to make monsters out of decent men and women. Zimbardo, professor emeritus of psychology at Stanford University, is perhaps best known as the creator of the Stanford Prison Experiment. For the first time, he tells the full story of this landmark study, in which a group of college-student volunteers was randomly divided into "guards" and "inmates" and then placed in a mock prison environment. Within a week the study was abandoned, as ordinary college students were transformed into either brutal, sadistic guards or emotionally broken prisoners. This event took place October 4, 2007 at Google Headquarters in Mountain View, CA «

Also interesting:

• Zimbardo on the Daily Show with Jon Stewarton
• Power of the Situation
• Das Experiment - Trailer

So oder so ähnlich würde ein (vermutlich auf einer Kiste stehender und mit einem Schild behängter) fanatischer Kritiker eines des größten physikalischen Experiments, welches am 10. September 2008 beginnen soll, andere Fanatiker um sich scharen und in vermeintlich weiser Voraussicht die Weltbevölkerung vor dem bestehenden Untergang der Erde warnen.

An diesem Tag soll voraussichtlich die erste Teilchenkollision im LHC (Large Hadron Collider), der größten Maschine der Welt, welche sich im der experimentellen, unterirdischen Nuklearforschungsanlage CERN in Genf befindet, stattfinden.

Der LHC ist ein Teilchenbeschleuniger in Form eines Ringes mit etwa 27 km Umfang, welcher Protonen und geladene Atomkerne bis zur Lichtgeschwindigkeit und dann zur Kollision bringt. Vier (teilweise miteinander konkurrierende und alle nach dem Nobelpreis strebende) Experimente (ATLAS, CMS, LHCb und ALICE) sollen untersuchen, was bei diesen Kollisionen geschieht. Diese Untersuchungen finden in Teilchendetektoren statt, die entlang der Ringstrecke verteilt sind.

Schematische Darstellung des LHC-Ringbeschleunigers und der vier Experimente am CERN. Der Large Hadron Collider LHC wird im Tunnel des Teilchenbeschleunigers LEP aufgebaut, der im Jahr 2001 abgebaut wurde. In vier unterirdischen Hallen stehen die Experimente ALICE, ATLAS, CMS und LHCb. (Quelle: http://www.weltderphysik.de)

ATLAS und CMS sollen bislang nicht entdeckte Elementarteilchen nachweisen. Am hoffnungsvollsten wird ein s.g. Higgs-Boson erwartet, das "Teilchen Gottes".

Kurz auf einen Nenner gebracht: Das Higgs-Teilchen hat die "Schwere" in die Welt getragen. Es verleiht den anderen Teilchen Masse – deshalb sein Beiname "Teilchen Gottes". Außerdem ist das Higgs-Boson das einzige noch nicht gefundene Teilchen, dessen Existenz von der Standardtheorie der Teilchenphysik vorhergesagt wird...

...Edward Witten hofft, dass das Higgs-Teilchen bis zum Ende dieses Jahrzehnts entweder im LHC in Genf oder im Tevatron am Fermilab in Chicago gefunden wird. Dann könnte vielleicht entschieden werden, ob die Standardtheorie der Teilchenphysik richtig ist oder von einer neueren Theorie wie beispielsweise der Supersymmetrie ersetzt werden muss.
(Quelle: http://www.wissenschaft.de/)

Darüber hinaus erhofft man sich den...

...Nachweis supersymmetrischer Teilchen oder bislang unbekannter Raumdimensionen durch verstärkte Wechselwirkung mit Gravitonen oder durch die Erzeugung kurzlebiger schwarzer Löcher.
(Quelle: http://de.wikipedia.org/)

Die Wissenschaftler versuchen dabei auch künstliche "Quark-Gluon-Plasmen" zu erzeugen, welche vermutlich kurz nach dem Urknall bestanden haben und im Inneren von Neutronensternen existieren sollen.

Auf http://www.boston.com/bigpicture/2008/08/the_large_hadron_collider.html
findet man sehr eindrucksvolle Bilder vom Inneren des LHC - wallpaperwürdig :-)

Kritik

Gerade diese "kurzlebigen schwarzen Löcher" sind das wichtigste Argument der LHC-Kritiker. Die Theorie des Physikers Stephan Hawking, welche besagt, dass sich diese kleinen schwarzen Löcher anders verhalten als die, die man im Weltall beobachten kann, und innerhalb kurzer Zeit wieder verschwinden, anstatt alles zu schlucken was ihnen in die Quere kommt, ist natürlich (noch) nicht bewiesen.

Sie befürchten, dass diese Objekte gefährlich sein und große Risiken mit sich tragen könnten, da es die Möglichkeit gäbe, dass die kleinen schwarzen Löcher sich doch noch entschließen auf der Erde zu bleiben und sie dann langsam aber stetig "auffressen".

Das folgende Schaubild habe ich auf http://lhc-concern.info/ gefunden, einer LHC-Kritik-Page:

Ich bin kein Physiker aber dieses Experiment finde ich überaus spannend. Man mag darüber denken was man will. Ich glaube nicht, dass ein großer Haufen von Wissenschaftlern Milliarden für eine Maschine ausgeben mit dem Ziel die Erde zu zerstören. Hätten wir schon früher auf Kritiker gehört, wäre die Erde immer noch eine Scheibe ;-)

Beginnen wird das ganze um 9 Uhr (MEZ) und wird per Webcast übertragen (http://webcast.cern.ch/).

Wir dürfen gespannt sein...

http://www.cern.de/	http://lhc-first-beam.web.cern.ch/ lhc-first-beam/ Welcome.html	http://atlas.ch/
http://cms.cern.ch/	http://lhcb.web.cern.ch /lhcb/	http://aliceinfo.cern.ch/
http://www.weltder physik.de/de/351.php	http://www.zdf.de/ ZDFmediathek/ content/511382

I started to put some stuff on paper so I can reflect on what I wish.  Apart from writing it down so i can see it, I am trying to keep my mind empty.  I have been thinking way too much and it has made me very sad and depressed because I am not getting answers that are right now and crustal clear.  I know better than this: I know I need to be patient.  It is just very difficult to fight over anxiety when it has become a daily habit.

Here are some of the things I wrote down last night: I want to create, have fun, explore my senses, experiment, remember and transmit, design, see people, share, collaborate, read, learn, dress up, express, write books, illustrate books, altered books, multiverse, love, rest, meditate, trance, craft, dance, music, djembe, yoga, tai-chi, listen, poets, message, intuition, vibrant, flow,  receptive to the moment, spirit, total presence, powerful, resonate, mindfulness, deep, dare, whole, unique, consciousness, life force, kundalini, performance art, videoclip, art for art sake, sublimate, divine, sensuality, ecstasy, charisma, adventures, beauty, lovers, bliss, freedom, smile, cosmic, healing, I grow, I am loved, journaling, integrity, potential, key, journey, seduce, mirror, simplicity, awake, joy, delightful, temple, movement, believe, truth, imagination, dynamic, challenge.

The Onyxx

at Lullaby on Daydream Road

http://lullabyondaydreamroad.wordpress.com/