:))
I believe that all of you ever looked, glanced, or found a Map, it’s could be widget Map in your smartphone, In the office wall, in the classroom, In the reading corner in the center of the city, Map showing the direction and place information. Nowadays we do not need to worry of getting lost in the new place because the dynamic map on your smartphone always leads you into the right direction, just need to type the destination and with GPS signal the map will give you the best direction, effective distance and also give you the estimated time arriving.
So, have you ever asked how to build or create a map? How it’s could find an efficient direction? How it could show the right position with incredible accuracy? The answer is, it has a Spatial Reference System. When we were in elementary school, our teacher teaches us about Latitude and longitude imaginary line. In order to explain about Spatial References System, that would help a lot. The most simplification to explain above that, humankind who lives in the tropical area w= that have round 0 – 10-degree coordinate have a different condition with an area that in 23..5 – 60 degree coordinate in latitude line.
Spatial References System or also known as Coordinate References System (CRS) commonly used in the geodetic subject to give position projection. CRS consist of local, regular, and global-based coordinate system that has been defined by Open Geospatial Consortium (OGC that lately knows as Open GIS Consortium) a nonprofit research organization worldwide. They have committed to interoperate location and develop geospatial technology.
Furthermore, if we want to build a map, we need the SRID integer to define map projection using EPSG Geodetic Parameters Dataset. For example, In Indonesia, we use EPSG 4326 which mean we used spatial references WGS 84 for global spatial references. So, what is EPSG? EPSG acronym from European Petroleum Survey Group. EPSG has a spatial code defined by the International Association of Oil and Gas Producers. The IOP's EPSG Geodetic Parameter Dataset is a collection of definitions of coordinate reference systems and coordinate transformations, which may be global, regional, national or local in application.
Back then in CRS, coordinate system compound from one coordinate system and one datum. A coordinate system is a set of mathematical rules for specifying how coordinates are to be assigned to points, such as affine, cylindrical, Cartesian, ellipsoidal, linear, polar, spherical, vertical, etc. A datum is a set of parameters that define the position of the origin, the scale, and the orientation of a coordinate system. The main subtypes of coordinate reference system are: geodetic, vertical, engineering, and image; additional subtypes are: derived, projected, and compound.
Here the example of coordinate system worldwide
- Universal Transverse Mercator coordinate system
- British national grid reference system
- Hellenic Geodetic Reference System 1987
- Irish grid reference system
- Irish Transverse Mercator
- Israeli Transverse Mercator
- Israeli Cassini Soldner
- Jordan Transverse Mercator
- Lambert conformal conic projection
- International mapcode system
- Military Grid Reference System
- United States National Grid
So, All an overview of spatial Coordinate System and the next chapter, I will discuss Coordinate Transformation System.
Start with what you know and then take time to figure out what the problem head to be solved
Why two of those different feeling between sad and happy . Built up a mood swing ?
6 PERANGKAP SETAN
Allah ta'ala telah menguji kita dengan menciptakan seorang musuh yang tidak pernah lengah sekejap matapun. Dia melihat kita sedangkan kita tidak melihatnya. Dia mengerahkan segala yang dimilikinya untuk mencelakakan kita, tidaklah ada suatu kesempatan guna menjerumuskan kita, melainkan ia manfaatkan sebaik-baiknya. Dia bekerjasama dengan para setan sejenisnya dan berkolaborasi dengan kroni-kroninya dari kalangan manusia.
Sedemikan berbahaya dan jahatnya musuh yang satu ini, namun amat disayangkan banyak di antara para manusia yang tidak sadar akan bahaya musuh bebuyutan mereka, bahkan tidak sedikit yang berteman dengannya! Alih-alih mengamalkan firman Allah ta'ala,
"إِنَّ الشَّيْطَانَ لَكُمْ عَدُوٌّ فَاتَّخِذُوهُ عَدُوّاً إِنَّمَا يَدْعُو حِزْبَهُ لِيَكُونُوا مِنْ أَصْحَابِ السَّعِيرِ"
Artinya: "Sungguh setan itu musuh kalian, maka perlakukanlah ia sebagai musuh. Karena sesungguhnya setan itu hanya mengajak golongannya agar mereka menjadi penghuni neraka yang menyala-nyala". QS. Fathir: 6.
Dalam rangka mengobarkan permusuhannya, setan menebarkan ranjau-ranjau di jalan yang kita lewati. Menurut Imam Ibn al-Qayyim (w. 751 H), perangkap setan ada enam jenis:
Kekufuran dan kesyirikan. Inilah target utama setan, jika berhasil maka manusia akan menjadi tentara iblis dan pasukannya. Namun jika gagal, maka insan akan dijerat dengan perangkap berikutnya:
Bid'ah. Sebab, kata Imam ats-Tsauri, "Bid'ah lebih disukai iblis dibandingkan maksiat. Karena pelaku maksiat akan bertaubat sedangkan pelaku bid'ah tidak bertaubat". Jika tidak berhasil maka manusia akan dijerat dengan ranjau ketiga, yaitu:
Dosa besar dengan berbagai macam jenisnya. Setan berusaha keras untuk menjerumuskan seorang hamba ke dalam perbuatan dosa besar, apalagi jika ia adalah seorang panutan di masyarakat, seperti para ulama misalnya. Setelah terjerumus, setan bekerjasama dengan kroni-kroninya untuk mem'publikasikan' 'kecelakaan' tersebut di hadapan umat, agar mereka menjauhinya. Jika gagal, setan akan menebar ranjau keempat, yakni:
Dosa kecil. Seorang hamba dijadikan meremehkan dosa kecil, sehingga dilakukannya berkali-kali sampai berbalik menjadi dosa besar. Kalau tidak berhasil, setan memasang perangkap kelima, yaitu dengan:
Menyibukkan manusia dalam hal-hal yang mubah, sehingga terlalaikan dari amalan-amalan yang berpahala. Andaikan target yang diincar adalah orang yang senantiasa menjaga waktunya dan sadar akan keterbatasan masa hidupnya di dunia, maka setan akan menjerumuskannya ke ranjau yang keenam, yakni:
Menyibukkan manusia dengan amalan-amalan yang utama, namun dijadikan lupa akan amalan-amalan yang lebih utama, karena keterbatasan ilmu dia. Seperti sebagian kalangan yang tersibukkan dengan dakwah kepada akhlak, sehingga melalaikan dakwah kepada tauhid. Sedemikian halusnya perangkap ini, sehingga banyak orang yang terjerumus ke dalamnya, dan mengira bahwa ia berada di jalan kebenaran. Seorang hamba tidak akan selamat dari perangkap ini melainkan dengan taufiq dari Allah ta'ala dan dengan terus mempelajari ilmu syar'i yang berisikan tuntunan Rasulullah shallallahu'alaihiwasallam.
Semoga Allah senantiasa melindungi kita dari godaan setan dan segala perangkapnya, amien.
Oleh: Ust. Abdullah Zaen, Lc, MA.
@kajianislamchannel
Let Me introduce my half of my soul,
I guess.
His excitement in here for re-puzzle my heart-broke
I guess
His smile so much meaning
To say "it's okay I'm here"
With some amounts of words and actions
I guess
Your intelligence, here to amaze me
I'm so happy
Your exist
Besides me,
I don't know how long it will be
But for now
You are the path of my soul,
Enlight me
You are a prince
Without Crown
Perfect for Me
The structure engineering was so powerful, they construct and design everything with efficient cost and elegance appearance. The combination of art and engineer or we can also be called it a combination of civil engineering and architecture engineer.
Chiefly, This section I want to discuss Great Britain and study the works
of Thomas Telford, and also two other men named Stephenson and Burnell.
I'm going to begin each section by defining some section goals and in this section,
the goals are to show how the definition and ideals of structural art began,
and as I mentioned, they began in Great Britain, Thomas Telford and also contrast the early of the iron bridge.
Come up with 3 collaboration in 3 aspects to analyses and give critique both the technical
and aesthetic aspects of the bridge design, These are efficient, elegance, and also the economy. The relation between 3 aspects shown by the picture below.
So with these changes, from the scientific point of view, we have a new material that is born
of the Industrial Revolution-iron. This revolution. From a social point of view, we have a new opportunity, industrialization. And from the symbolic point of view, we have a new vision, a new form for structures that we define as structural art. Before we going into so far, we should be understanding several keys to helping us understand,
Ambiguous Form: Unclear how the forces are being carried
Cable : Structural element to resist tension only
Cantilever : a protruding rigid structural element, such as a beam or girder, anchored only at one end
Compression: application of inward forces to different points
Density : Mass per unit volume
Span : longest unsupported length
Spandrel: The planar like structure that connects the arch to the deck
Suspenders: vertical members suspending the deck, or carrying the loads to the main cable
Tension : Describes the pulling force exerted by each end of a road, truss member, or similar three dimensional object
The raised of Iron-bridge, started by the regulation in the UK, One is we have Queen Elizabeth who outlaws woodcutting, the forests in Great Britain are getting diluted, So the Queen outlawed wood cutting. Moreover, Britain was adjusted free enterprise
Next, British Democracy encourages free enterprise. Britain wasn't really run from London.
The transportation system in Great Britain was pretty bad. And finally, island isolation provides political stability Great Britain avoided wars on Continental Europe and they hadn't been invaded for about 700 years. Therefore, there was a sense of security. So very briefly, that is the social context surrounding Great Britain and what allowed structural art to flourish in particular in Great Britain at that time. And the famous structural engineer of this era was Thomas Telford; born 1757, died 1834.
THOMAS TELFORD
Thomas Telford; born 1757, died 1834. Now let's take a look at Thomas Telford's later works.
We started to look at the Craigellachie Bridge completed in 1814 spanning 150 feet.
Next, we're going to look at the Mythe Bridge completed in 1824 at about the same span, 170-foot span. And then finally the Menai Bridge completed in 1826. This is not an arch but is a 580 foot was a suspension bridge. With the design of the Craigellachie, Telford noticed that he made,
what he would call, essentially a mistake, and he corrected this with the Mythe Bridge.
Craigellachie Brigde, source: Google picture
Mythee Bridge, source: Google picture
If we look at these two bridges we see that the landscape is different
so you might notice they are different bridges by the landscape.
But if you look at just the bridge itself, can you notice the difference
between the two bridges? Because they are very similar to one another.
The difference between the Craigellachie Bridge and the Mythe Bridge is in the spandrels.
It's in those diagonal members that connect the deck to the arch.
If you look closely at those diagonal members you'll see that they're oriented differently
in the Craigellachie versus the Mythe.
In the Craigellachie, if you take the bisector of those diagonal pieces you'll see
that bisector is normal to the arch.
It's coming perpendicular to the arch.
Whereas in the Mythe Bridge the bisector of those diagonals is vertical.
It's completely straight up and down.
In the Mythe Bridge, this is a more efficient way of carrying the loads.
The loads in those diagonals are more efficiently or more evenly distributed
between those diagonal members, whereas in the Craigellachie Bridge
in particular, those diagonals that are leaning or more horizontal are carrying much less load
then the diagonals that are more vertical.
Now we come to the Menai Bridge completed in 1826,
a 580-foot span suspension bridge designed by Thomas Telford.
Now there was a need to design this bridge and the need arose from the active union of 1800
which merged the Kingdom of Ireland with the Kingdom of Great Britain.
They needed to connect London to Dublin and to do that you had to go through the Island
of Anglesey all the way to the tip of Holyhead.
And to get to Holyhead and even Anglesey you had to cross the Menai Straits.
If you look at the side spans of this bridge we see that it has both arches and suspenders.
And this again is ambiguous.
It doesn't tell you clearly how those loads are being carried.
But Telford did this because he was concerned about the wind.
He wanted to make sure the back stands were heavy and anchored.
Just before the bridge opened, Telford's resident engineer noticed undulations
from gusting winds so Telford added bracing, which cut down the movement.
Ten years later, about two years after Telford's death,
the bridge keeper reported large oscillations and unfortunately no action was taken
and in 1839 a gale tore part of the roadway loose.
Telford's writings in the 1820s and his resident engineer's field observations showed how
horizontal wind can cause extensive vertical motion in a suspension bridge.
Unfortunately, this lesson in history was lost in the bridge designs to come, as we will see.
In the Menai Bridge, although the towers look heavy, they're actually hollow,
like in the Pontcysyllte Aqueduct Bridge.
So Telford again is thinking about efficiency in his designs.
Let's use the Menai Bridge to define some terms for you as related to suspension bridges.
The first term that we have to understand is span.
When we talk about a span of a bridge we're talking about the longest unsupported length
and for suspension bridges, that distance is from one tower to the next.
Next, let's look at the cable.
The cable goes from anchor to tower, to the next tower, to the next anchor, and it is in tension.
And it's in tension due to the uniform loads imposed by the hanging suspenders.
The suspenders are the vertical elements that suspend, or support, the deck.
The form of that cable is parabolic.
I'm going to do a brief demonstration for you to show you the shape that these cables take
when loaded and it will give you a better sense for why the form
of a suspension bridge cable is parabolic.
In this demonstration, this chain represents the cable of a suspension bridge.
We know that the chain can only take tinsel forces.
It can't take any compression forces.
It could be stretched but it can't be squeezed.
So let's look at how the shape of this chain changes when we add loads.
So if I add one load right in the center we see the V shape that this chain takes.
But if I— Now, I'm going to add continuously load along this whole chain,
we're going to see it start to take the form of the cable
of a suspension bridge, which is a parabolic form.
Now you start to see the shape change a little bit more…
and more. So these weights represent essentially the load that's transferred from the suspender,
which is the vertical elements of a suspension bridge, to the cable.
And it's the load represented by the weight of the deck.
And we see that as I add more and more of these loads along the chain, we're starting to see
that parabolic form takes shape, which is the shape of the cable in a suspension bridge.
Telford designed his bridges for carriage loads but the railroad age was approaching
and that is where we move to next.
See you in the next Section guys :).
Faizen, 2th January 2020
Today, you are became our main topic
He crazily falling in love with you
Until he hardly wanna quit from your rip current
But, he finally decided surfing above you
Today, i went into your shore
Seeing every inched into your wave
Playes around with your sands
Deep into your horizon
Shore.
Today i knew,
Why i should often back into you
-n-
Seem like street at back from my home 😃
#MeTryToDoThis
[TAFFAKUR]
jangan lupa selalu bertaffakur setiap hari, seperti yang telah dicontohkan oleh Rosulluloh SWT. Setiap bangun tidur kemudian duduk dan mengusap muka dengan kedua tangannya. Menghafal (membaca) 10 ayat terakhir Ali-Imram. Kemudian baru mengambil wudhu dan sholat tahajud. MasyaAllah sungguh adab yang luar biasa. Bertaffakur , mengingat Allah dahulu sebelum mengingat makhluk 🥰. Bismillah yok semoga hidup kita semakin berkah aaminn 🤲.