Nge-blog Dikit Gapapa Kan??

ATTENTION….!!

this is no. 4…!! <pamungkas yeuh>

if ya haven’t read no. 3, then read that first, will ya..?

thank u…

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ehm,,,!!!

saya pengen cerita dikit nih, tentang sesuatu pada kehidupanku (alah kamana atuh kehidupan..) yang sampai sekarang tidak pernah berubah,,

sesuatu yang rasanya udah nge-pas dan saya paporitin banget,,(emang kolam pake paporit..)

apaan tuh..?? yah, mungkin kalian sudah bisa membayangkan apa yang saya maksud, walaupun belum tentu apa yang kalian bayangkan itu sesuai dengan apa yang saya harap untuk dibayangkan…

….

hey kalian yang punya kompi…!! (komputer maksudnya..)

tentunya desktop kalian pake gambar bekgron kan..??

nah gini,,

saya punya kompi sejak kelas 2 sma,,

yah, tepatnya semester 2 kelas 2 sma,,

lebih tepat lagi taun 2005,,

hmmm,, yaaaa yang sekiranya lebih tepat lagi bulan maret 2005,,

oke, oke,,yang PALING TEPAT : 7 maret 2005….!

pada hari itulah, sorenya, sebuah kompi diangkut ke rumah saya,,

hati dag-dig-dug waktu tombol power akan ditekan untuk pertama kalinya,,(yaaa ngga gitu2 amat sih…)

horeeee….!!nyala bo…!! yeeees…!! akhirnya punya kompi sendiri,setelah selama ini cuma bisa ngederin kompi nyanyi,,(ngaco lagi)

malemnya lgsg dioprek,,masukin lagu,,masukin gambar,,

install game CM 03/04,,terus langsung maenin,,

………

ehm, ralat: langsung nyoba maenin game CM 03/04,,tapi gagal karena saya lupa kl nginstall game bajakan tu ada crack yg musti dimasukkin (yang baru saya ingat keesokan harinya ketika saya tanyakan kepada si empunya cd,,thanks to YIB…!!),,

maklum, baru pertama kali nginstall game,,

nah,,satu hal lagi yang saya lakukan ketika itu : ganti gambar desktop!

awalnya, gambar desktopnya masih standar windows bgt,,betul2 standar, bahkan masih berada di bawah standar motor  si tommy (ni kalimat ambigu lho),,

nah, kuganti dengan gambar wallpaper tidus nya final fantasy ..

sip..! mecing dah…! membiru, sesuai dengan theme windowsnya yang juga berwarna biru,,(biru? jadi inget MPO-FBP =p)

selanjutnya..

1 minggu terlewati,,

1 bulan terlewati,,

1 tahun terlewati,,

10 tahun terlewati,,

(….??)

eits, blm denk…!!

1 tahun 9 bulan       hari telah terlewati, dari mulai saya punya kompi ampe saya nulis postingan ini,,

selama itu pula, berbagai macam file: lagu, gambar, notepad, dan lain-lain itu telah bolak-balik keluar-masuk kompiku ini,,(ada jg yang ga balik lagi>>jadi cuma bolak aja)

termasuk virus brontok (yg sialan) itu, yang sempet bikin kompiku jadi lelet abis,,’thanx’ to Tuma, yaitu sang pendonor brontok ke kompiku,,(hehehe,,pis!!)

tapi ada satu hal yang tetep: bekgronnya…!!

masih sama..!!

jadi, umur tu bekgron sama dengan umur kompiku….!

‘hmm,,masa g pernah kepikiran bwat ganti, tang…?,lu kan punya banyak banget gambar2 bagus nan menyejukkan mata..?, 17 giga gitu loh…!?’,ujar seorang pembaca setia blog ini dalam hatinya,,

ga ah, udah suka banget,,ga mau ganti,,hehehe…

(ngomong we hoream ngagentosna atuh tang!! =p)

eh sbg tambahan,gambar di cover binder saya juga sama,,dari kelas 2 sma blm pernah ganti lho,,

tp mau gmana juga, tu kompi and bekgronnya dah jadi favoritku di kamarku yang sejuk nan bebas debu itu,,

btw bapakku juga punya kompi favorit loh : kompi kampal ampi..

……………….

hohoho…ya begitulah, makanya postingan ini saya kasi judul:

‘ku tidak pernah pindah ke lain hati’

(nyambung ngga ya?)

yo piss,,

(cat: kali ini Ivan di atas adalah Ivan Nugraha alumni smp 5 bandung angkatan 2003,alumni sman3 bandung angkatan 2006, yang sekarang mahasiswa stei itb angkatan 2006 dan terdaftar sebagai siswa kelas intermediet sebuah lembaga pembelajaran bahasa inggris)

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hhhhhaaaaaahhh,, cape juga nulis 4 postingan sekaligus,,

puaskah saudara/i yang telah lama menunggu kehadiran postingan blog saya ini..?

namun, jika ada yang mengalami gejala2 hipertensi, hiperaktif, hiperbolik, hipertonis, sampai hipermart, saya tegaskan bahwa saya tidak bertanggung jawab..!

(tiba2 ada seseorang datang begitu saya selesai ngomong..)

>>Rahmat (a.k.a. Mamet/Matdi)  : "Ooh,,kamu Tegaskan Bahwa Saya Tidak Bertanggung Jawab…??!!? Saya Rahmat..!!"

>>Tegaskan Bahwa Saya Tidak Bertanggung Jawab : "Eh, ada Rahmat! Salam kenal! Kamu terkenal lho! Kapan mau ke Bandung lagi nih..??"

>>Rahmat : "Iya nih, Gas! Belum tau.. Padahal saya dah kangen Bandung.."

>>Tegaskan Bahwa Saya Tidak Bertanggung Jawab : "Lho…?? Saya kira kamu Rahmat..?!?"

>>Rahmat : "Lha, kamu sendiri…???"

>>………..

>>………..dan selanjutnya…

(geus ah, lieur ngomong jeung si eta mah…)

yo piss,,

ehm…!!

bwat yang lieur gara2 ngeliat 4 postingan saya yang terkhir,,mohon maaf..!!

itu tuh tugas kontek sayah<musti ngerangkum 4 bab terus diposting di blog…>

tapi tengkyu bwat yang tetep ngasih comment..hohohoho…

tunggu aja tanggal maen, eh salah, tanggal posting yang sebenarnya>>> ntar langsung 4 postingan sekaligus…..!!(lieur, lieur lah..)

sekarang lagi lieur ku tugas…kalem nya….

oya, kalo ada yang ngopi-paste rangkuman yg gw buat,,awas loh….!!!!!!

bakal kena kutuk dari mbah jambrong..!! =p

CHAPTER 9 – UNIT CONVERSIONS

Mistaken in unit conversions are the most wfrequent cause of errors in engineering calculations.

9.1 What Does It Mean to “Measure” Something?

Whenever we make a measurement, it is always made with respect to a standard.

It is absolutely essential to report the unit with the number. Even tough the number may be correct, the answer is completely wrong witout the units.

9.2 Conversion Factors

When switching between unit systems, it is necessary to use a conversion factor. Conversion factors are developed from identities that are determined experimentally or by definition.

Example: 1 ft = 0.348 is an exact definition. Then the conversion factor is

            F = 1 ft/ 0.348 m = 0.348 m/ 1 ft

9.3 Mathematical Rules Governing Dimensions and Units

In engineering, quantities continually appear in mathematical formulas. The following rules must be obeyed:

Addition/Subtraction: All the terms that are added (or subtracted) must have the same dimensions.

Multiplication/Division: The dimensions in multiplication/division are treated as though they were variables and cancel accordingly.

Transcendental Functions: A transcendental function cannot be given by algebraic expressions consisting only of the argument and constants. (Transcendental functions are generally represented by an infinite series)

Dimensional Homogeneity: For an equation to be valid, it must dimensionally homogeneous, that is, the dimensions on the left-hand and right-hand sides of the equation must be the same.

9.4 Systems of Units

The SI System of Units has evolced in modern times. Many other systems of units have preceded it.

            9.4.1 Absolute and Gravitational Systems of Units

            Absolute systems define mass [M], length [L], and time [T]. Force [F] is a derived        quantity determines from Newton’s second law.

            Gravitational systems define force [F], length [L], and time [T]. Mass [M] is a    derived quantity, also determined from Newton’s second law.

            9.4.2 Coherent and Noncoherent Systems of Units

            Both the absolute and gravitational systems are coherent, meaning that no          additional conversion factors are required if the units within that system are used exclusively. In contrast, the AES (American Engineering System) of units is             noncoherent.

9.5 The Datum

A datum is a reference point used when making a measurement.

9.6 Pressure

Pressure is a force exerted on an area.

Gas pressure results from the impact of gas molecules on the container wall, thus exerting a force on a given area of surface.

Hydrostatic pressure results from the weight of liquid or gas.

Three types of pressure:

1. absolute

2. gage

3. differential

9.7 Temperature

Temperature is the measure of a body’s thermal energy, that is, its molecular (atomic) motion.

A temperature scale is formed by placing two reference points on the mercury -in-glass thermometer and evenly subdividing them into temperature intervals.

9.8 Changing the System of Units in An Equation

Engineers must often convert equations from one system of units to another.

9.9 Dimensional Analysis

Dimensional analysis is widely used in engineering to solve problems about which there is little fundamental information. Simply by looking at he dimensions of the quantities involved, we can tell much about the quantities are related.

CHAPTER 8 – SI SYSTEM OF UNITS

The SI System of Units (Le Systeme International d’Unites) is the system favored by science, so you undoubtedly have been exposed to it in your science calsses.

8.1 Historical Background

The need for units of measure was evident as soon as human commerce began. It quickly became evident that units of measure had to be subdivided. Many ancient measuring systems were based upon fractions of the base unit, such as halves, thirds, and quarters. Thus, the unit was subdivided into a number of segments that is easily divided into fractions.

For units of measure to be useful, they must be standardized so that business transactions are unambiguous. Any measuring system must establish base units from which all other units are derived.

8.2 Dimensions and Units

The distinction between a dimension and a unit is best understood by example. The dimension of length may be described by units of meters, feet, inches, cubits, and so forth. Thus, dimension is an abstract idea whereas unit is more specific.

8.3 SI Units

SI includes three types of units: supplementary, base, and derived.

            8.3.1 SI Supplementary Units

a.       Plane angle (radian) – defined as the length of the swept circumference divided by the radius

b.      Solid angle (steradian) – defined as the swept area divided by the radius squared

            8.3.2 SI Base Units

a.       Unit of length (meter)

b.      Unit of mass (kilogram)

c.       Unit of time (second)

d.      Unit of electric current (ampere)

e.       Unit of thermodynamic Temperature (kelvin)

f.        Unit of amount of substance (mol)

g.       Unit of luminous intensity

            8.3.3 SI Derived Units

            The base units may be combined into the derived units. Some derived units have            been assigned special names. These derived units with special names may be even       combined with other units to form new derived units.

8.4 SI Prefixes

Because scientists and engineers describe quantities that span many orders of magnitude, SI includes the multipliers. It is generally desirable to use the appropriate multipliers so that the number falls between 0.1 and 1000.

It is strongly recommended that all numbers in calculations be converted to scientific notation.

8.5 Customary Units Recognized by SI

There are some customary units that are not formally a part of SI, but are so commonly used that their meaning is regulated by the General Conference on Weights and Measures.

Examples: minute, hour, day, degree, liter, metric ton

CHAPTER 7 – TABLES AND GRAPHS

Tables are very useful for putting data into a computer or calculator. However, they are difficult to comprehend and interpret; for this, graphs are required.

7.1 Dependent and Independent Variables

We generally understand the nature to work in a cause/effect manner. Thus, variables can be classified according to that manner: independent (i.e., cause) and dependent (i. e. effect).

7.2 Tables

A table is a convenient way to list dependent and dependent variables. The independent variable(s) are usually listed in the left column(s) and the dependent  variable(s) are usually listed in right columns. The values in a given row correspond to each other. Another important feature is that all the numbers should be reported with their units.

7.3 Graphs

Tables are useful for presenting technical information because the numbers can be easily entered into computer programs or calculators. However, it is very difficult to interpret tabulated data. For this, graphs are much better suited.

The dependent variable is traditionally plotted on the ordinate (y-axis) and the independent variable is plotted on the abscissa (x-axis). The ordinate and abscissa  must have labels with the units.

Data may be categorized as:

1. Observed – simply presented without an attempt  to smooth them or correlate them with a mathematical model.
2. Data – presented with a smooth line, which may be determined by a mathematical model, or perhaps ot is just the author’s best judgment.
3. Theoretical – generated by mathematical models.

7.4 Linear Equations

A linear equation has the form

            y = mx + b

The slope, m, of this line is defined as “rise over run” or

            m = (y₂-y₁)/(x₂-x₁)

7.5 Power Equations

A power equations has the form

            y = kx^m

If a logarithm is taken of both sides, then the power equation becomes linear:

            log y = log (kx^m)

            log y = log x^m + log k

           log y = m log x + log k

If the exponent m is positive, then the power equation plots as a parabola.

If the exponent m is negative, then the power equation plots as a hyperbola.

7.6 Exponential Equations

An exponential equation has the form

            y = kB^mx

Logarithms are taken of both sides to give a linear equation:

log y = log (kB^mx)

log y = log B^mx + log k

log y = (m log B) x + log k

7.8 Interpolation and Extrapolation

Interpolation – extending between the data points

Extrapolation – extending beyond the data points

Linear interpolation – approximating a curve with a straight line

7.9 Linear Regression

In mathematics, we are normally given a formula from which we calculate numbers. If we reverse this (i. e., determine the formula from the numbers), the process is called regression, meaning “going backward.” If the formula we seek is the equation of a straight line, then the process is called linear regression.

The problem is: Given a data set, what are the slope and y-intercept that describe the data? Two approaches are generally taken:

1. method of  selected points
2. least-squares linear regression

CHAPTER 6 - NUMBERS

            Just as a wirter is concerned with accurately communicating with words, engineers are concerned with accurately communicating with numbers properly.

6.1 Number Notation

The accepted convention of standard notation for numbers is

            4 378.1

where the space indicates three orders of magnitude and the period indicates the decimal.

There are numbers that too large or small to be recorded in decimal notation, so we use scientific notation:

            6.0221367 x 10²³

Engineers must always use leading zeros for decimal numbers less then one:

            0.593

6.2 Simple Error Analysis

Numbers may be classified as integers (used fo counting) or reals (used to measure continuos properties).

Accuracy – the extent to which the reported value approachesthe “true” value and is free from error.

Precision – the extent to which the measurement may be repeated and the same answer obtained.

Random errors – result from many sources, such as random noise in electronic circuits and the inability to reproducibly read instruments.

Systematic errors – result from a measurement method that is inherently wrong.

Uncertainty – results from random errors and describes the lack of precision.

Error – the difference between the reported value and the true value.

6.3 Significant Figures

The better a number is known, the more significant figures are reported

To determine the number of significant figures in a number:

1. A significant figure is an accurate digit, although the last digit is accepted to have some error.
2. The number of significant figures does not include the zeros required to place the decimal point.

Two important points about significant figures:

1. Exact definitions have an infinite number of significant figures.
2. Numbers resulting from exact mathematical relationships have an infinite number of significant figures

Numbers are rounded when there are more digits than are appropriate.

- Round up if the number following the cut is between 5 and 9.

- Leave alone if the number following the cut is between 0 and 4.

It should be emphasized that the rounding should be performed only when the final answer is reported. Do not round during the intermediate calculations. Some students diligently round at each calculation step, thus causing a wrong final answer. This is called rounding error.

The appropriate procedure for multiplying/dividing numbers follows:

1. Indicate the number of significant figures for each number.
2. Calculate the answer.
3. Round the answer to have the same number of significant figures as the least precise number.

The appropriate procedure for adding/subtracting numbers follows:

1. Align the decimal points.
2. Mark the last significant figure of each number with an arrow.
3. Calculate the answer.
4. The arrow farthest to the left dictates the last significant figure of the answer.

ehm….!!

akhirnya ane nge-post lagi..

sekarang lagi di atheroz nih,,

soalnya di jannet lagi penuh bo, kaya rumah shiddiq (lha..??)

sebelum saya duduk di depan komputer ini, saya sempet bingung,,

kenapa?

gini:

pertama, begitu saya nyampe, saya lgsg ke meja operator,,

‘ada yang kosong mas?’

‘di bawah’, katanya sambil ngasiin nomer ke saya,,

pas saya liat nomernya, kaget juga>>> no 80…!!

di lante bawah lagi…!!

berarti dengan yg di lante 2, total ada berapa komputer nih…??

buset, ternyata dari semenjak terakhir saya ke sini (dah lupa,,mgkn kelas 2 sma) atheroz dah bertambah besar dengan demikian pesatnya spt rambut shiddiq…(lha…?)

sip dah…!! lets go straight to the PC…!!

saya jalan,,

pertama ngeliat, ada deretan komputer dengan nomer2 awal,,

wah, berarti masih jauh nih komputer saya,,

lanjut jalan ke belakang,,gile, ampe ada jembatan kecilnya gitu,,

mungkin untuk memisahkan sisi depan dengan sisi belakang…??

kenapa dipisahin depan belakang?pikiran sedikit melayang>>mungkin kalo ada gempa maha dahsyat super ‘joss’ nan mandraguna, ni warnet tinggal ngorbanin salah satu sisi bangunannya, sedangkan sisi yang laennya tinggal terbang ke kota sebelah….(ngaco lu tang…)

lalu kusebrangi jembatan itu,,

terusin nyari lagi ke dalem,,

sekarang saya liat ada deretan komputer dengan nomer2 belasan,,

tiba2 sebuah algoritma muncul di kepala:

IF  ‘di sini komputer no belasan’  AND  ‘komputer saya no 80′  THEN  ‘waktu saya nyampe komputer no 80, kaki saya dah gempor’  ELSE ‘mending pulang’

tapi tetap kuputuskan untuk mencari koputer no 80,,

mencari terus,,

mencari,,

mencari,,

mencari,,

mencari,,

mencari,,

mencari,,

terus mencari,,

…………..

……………….?!$%?^?$*&%*%&#$????

LHO KOK GA KETEMU-KETEMU…………..!?!?!?!??!?!

tidaaaak…..!!!

apakah saya mesti nanya ke  pegawai..??

ga ah, malu….!!

cari sendiri…!!

tapi kemudian, saya berhasil menemukannya…

bukan menemukan komputernya, tapi menemukan apa yang salah..

tebak coba apa yang salah..?

jawab:

a. no 80 tuh ada di warnet sebelah? BUKAN

b. no 80 tuh fiktif, soalnya saya sebenernya di blacklist? BUKAN

c. saya cuma mimpi? BUKAN

d. no 80 tuh adanya bener2 di bawah>>underground…??? BUKAN (kl gitu, ntar pas ada gempa, ga bisa terbang dong??)

yang betul adalah:

putar no yang saya bawa 180 derajat…

dan jawabannya pun muncul,,

ternyata komputer saya tuh no 08….!!!

gendeng…saya kebalik ngeliatnya,,

akhirnya nyampe deh ke komputer no 80 yang kebalik,,

mulai ngetik blog,,

pengen saya nge-post apa?

baca ulang dari atas =p

hehehe,,

hikmah: jangan mau ketipu oleh pikiran sendiri,,

udahan ah,,

tunggu postingan berikutnya…!!!!!

be prepared…..

note: segala kesamaan kejadian, tempat, dan waktu adalah kebetulan belaka, tetapi kesamaan nama adalah sebuah kesengajaan yang tidak disengaja secara sengaja,,

abis nyoba situs aneh yg dikasi tau si GG nih,,

http://rumandmonkey.com/widgets/toys/namegen/969

ternyata namaku kl ditranslate ke bahasa jepang tu jadinya Mizuhashi Kaito (Mizuhashi=water bridge, Kaito=big dipper of the ocean),,

jd, apakah Mizuhashi Kaito  tu artinya : jembatan nu tilelep..??

ngga ya..??

hehehehe…

The Meaning of FRIEND

[A]ccept you as ‘you’ are

[B]elives in ‘you’

[C]alls ‘you’ just say hello

[D]oesn’t give up !!! on you

[E]nvisions the whole of ‘you’ ( even the unfinished parts )

[F]orgives you mistake

[G]ives uncondionally

[H]elps you

[I]nvites you over

[J]ust be with you

[K]eeps you close at heart

[L]oves you for you are

[M]akes a difference in your life

[N]ever judges

[O]ffer support

[P]icks you up

[Q]uites you fear

[R]aises your spirit

[S]ay nice things about you

[T]ells you the truth when you need to hear it

[U]nderstand you

[V]alues you

[W]alks beside you

[X]-plain things you don’t understand

[Y]ells when you won’t listen and

[Z]aps you back to reality