umroh oktober

Definisi arti kata “Surveying” ini mengacu pada pengumpulan data yang berhubungan dengan perekaman bentuk permukaan bumi dan umumnya direpresentasikan sebagai peta, dalam bentuk bidang datar atau model dijital. Sedangkan arti kata “Pengukuran” memberikan arti pada peralatan dan metode yang berhubungan dengan pelaksanaan surveying seperti yang didefinisikan sebelumnya. Jadi, “Surveying” adalah yang berhubungan dengan segala sesuatu dari bidang tanah hingga penentuan ukuran dan bentuk bumi, sedangkan “Pengukuran” adalah yang berhubungan dengan penggunaan peralatan dari pita ukur hingga pengukuran jarak elektro magnetik atau dengan teknik-teknik satelit.

Ilmu pengetahuan “Surveying” dan “Pengukuran” mencakup aspek-aspek matematik, astronomi, geografi, fisika, mekanika, metrologi, statistik, geofisika dan disiplin ilmu pengetahuan lainnya. Disiplin ilmu tersebut, termasuk membaca alat seperti bacaan vernier, mikrometer dan lingkaran; satuan standard ukuran; alat temperatur dan skala; trigonometris dan tabel-tabel lain; logaritma; alat ukur jarak dan sudut; alat hitung; alat barometri; penentuan nilai gravitasi; penentuan dan penggambaran elevasi serta berbagai peralatan lainnya dan metode penggunaannya.

Surveying secara tradisional didefinisikan sebagai ilmu pengetahuan pengukuran dan pemetaan posisi relatif di atas, pada atau di bawah permukaan tanah, atau membangun posisi-posisi tersebut dari perencanaan teknis atau dari deskripsi permukaan tanah. Oleh karena itu, Surveying akan selalu berurusan dengan pengukuran dalam aspek fisika dan matematika. Dengan adanya perkembangan teknologi, maka telah terjadi perubahan besar dalam aspek fisika yaitu peralatan pengukuran dan dalam aspek matematik yaitu penggunaan komputer.

Pada umumnya, surveying dilakukan di bidang datar (plane surveying), yakni surveying yang tidak memperhitungkan kelengkungan bumi. Pada proyek-proyek surveying, kelengkungan buminya cukup kecil sehingga pengaruhnya dapat diabaikan, dimana perhitungannya menggunakan rumus-rumus yang disederhanakan. Sedangkan pada proyek-proyek dengan jarak-jarak jauh dan kelengkungan bumi harus diperhitungkan, kegiatan ini dimasukkan ke dalam surveying geodetik yang merupakan aplikasi dari Surveying geodesi (Geodetic Surveying).

Metode surveying dapat dibedakan atas:
1. Surveying bidang datar (Plane Surveying)
Dengan asumsi bahwa daerah alat survey adalah bidang datar.
Umumnya, mencakup daerah yang tidak luas dimana pengaruh kelengkungan bumi, diabaikan.
2. Surveying Geodetik (Geodetic Surveying)
Menggunakan perhitungan teori bentuk bumi.
Umumnya menggunakan akurasi yang tinggi dan mencakup daerah yang luas dimana pengaruh kelengkungan bumi, diperhitungkan.

Selanjutnya, pengukuran Surveying (Surveying measurement) dapat didefinisikan sebagai seni, ilmu, teknologi pengumpulan dan menganalisa data ukuran yang berhubungan antar tanah satu dengan lainnya serta dihubungkan dengan permukaan dan ruang, termasuk mendesain, merencanakan spesifikasi ukuran dan standar untuk menyempurnakan ukuran dengan ketelitian dan akurasi yang diinginkan, melakukan kontrol kesalahan dan perhitungannya (adjustment), termasuk menggunakan peralatan yang sesuai untuk pengukuran seperti jarak, tinggi, sudut, arah, posisi, luas, volume dan pengukuran lain yang berhubungan dengan kuantitas.

Jenis-jenis alat survey yang memerlukan surveying antara lain adalah Survey kontrol, Survey topografi, Survey kadaster, Survey hidrografi, Survey route, Survey konstruksi, As-built survey dan Survey tambang. Pada kenyataannya, seluruh aspek dalam kehidupan sehari-hari mempergunakan surveying, misalnya pada Pemetaan bumi baik di atas maupun di bawah laut; Pembuatan peta navigasi (darat, udara, laut); Penentuan batas tanah; Membangun basisdata untuk manajemen sumberdaya alam; Membangun data teknik untuk konstruksi jembatan, jalan, bangunan, pengembangan lahan.

Berdasarkan implementasi dari surveying tersebut, maka seorang Surveyor dituntut agar dapat melakukan riset, menganalisis dan membuat keputusan; Kerja lapangan yaitu pengumpulan data; Hitungan yaitu pengolahan data; Pemetaan atau penyajian data; Stake-out yaitu memindahkan data rencana dari peta ke lapangan; dan Pemantauan atau monitoring.

Dalam perjalanannya, Surveying masa depan adalah melakukan pengumpulan data, menyimpan data, memperoleh kembali dan dipakai bersama dengan menggunakan peralatan komputer, peralatan dengan sistem optik dan satelit.



BALTIMORE — In the afternoons, the streets of Locust Point are clean and nearly silent. In front of the rowhouses, potted plants rest next to steps of brick or concrete. There is a shopping center nearby with restaurants, and a grocery store filled with fresh foods.

And the National Guard and the police are largely absent. So, too, residents say, are worries about what happened a few miles away on April 27 when, in a space of hours, parts of this city became riot zones.

“They’re not our reality,” Ashley Fowler, 30, said on Monday at the restaurant where she works. “They’re not what we’re living right now. We live in, not to be racist, white America.”

As Baltimore considers its way forward after the violent unrest brought by the death of Freddie Gray, a 25-year-old black man who died of injuries he suffered while in police custody, residents in its predominantly white neighborhoods acknowledge that they are sometimes struggling to understand what beyond Mr. Gray’s death spurred the turmoil here. For many, the poverty and troubled schools of gritty West Baltimore are distant troubles, glimpsed only when they pass through the area on their way somewhere else.

Officers blocked traffic at Pennsylvania and West North Avenues after reports that a gun was discharged in the area. Credit Drew Angerer for The New York Times

And so neighborhoods of Baltimore are facing altogether different reckonings after Mr. Gray’s death. In mostly black communities like Sandtown-Winchester, where some of the most destructive rioting played out last week, residents are hoping businesses will reopen and that the police will change their strategies. But in mostly white areas like Canton and Locust Point, some residents wonder what role, if any, they should play in reimagining stretches of Baltimore where they do not live.

“Most of the people are kind of at a loss as to what they’re supposed to do,” said Dr. Richard Lamb, a dentist who has practiced in the same Locust Point office for nearly 39 years. “I listen to the news reports. I listen to the clergymen. I listen to the facts of the rampant unemployment and the lack of opportunities in the area. Listen, I pay my taxes. Exactly what can I do?”

And in Canton, where the restaurants have clever names like Nacho Mama’s and Holy Crepe Bakery and Café, Sara Bahr said solutions seemed out of reach for a proudly liberal city.

“I can only imagine how frustrated they must be,” said Ms. Bahr, 36, a nurse who was out with her 3-year-old daughter, Sally. “I just wish I knew how to solve poverty. I don’t know what to do to make it better.”

The day of unrest and the overwhelmingly peaceful demonstrations that followed led to hundreds of arrests, often for violations of the curfew imposed on the city for five consecutive nights while National Guard soldiers patrolled the streets. Although there were isolated instances of trouble in Canton, the neighborhood association said on its website, many parts of southeast Baltimore were physically untouched by the tumult.

Tensions in the city bubbled anew on Monday after reports that the police had wounded a black man in Northwest Baltimore. The authorities denied those reports and sent officers to talk with the crowds that gathered while other officers clutching shields blocked traffic at Pennsylvania and West North Avenues.

Lt. Col. Melvin Russell, a community police officer, said officers had stopped a man suspected of carrying a handgun and that “one of those rounds was spent.”

Colonel Russell said officers had not opened fire, “so we couldn’t have shot him.”

Lambi Vasilakopoulos, right, who runs a casual restaurant in Canton, said he was incensed by last week's looting and predicted tensions would worsen. Credit Drew Angerer for The New York Times

The colonel said the man had not been injured but was taken to a hospital as a precaution. Nearby, many people stood in disbelief, despite the efforts by the authorities to quash reports they described as “unfounded.”

Monday’s episode was a brief moment in a larger drama that has yielded anger and confusion. Although many people said they were familiar with accounts of the police harassing or intimidating residents, many in Canton and Locust Point said they had never experienced it themselves. When they watched the unrest, which many protesters said was fueled by feelings that they lived only on Baltimore’s margins, even those like Ms. Bahr who were pained by what they saw said they could scarcely comprehend the emotions associated with it.

But others, like Lambi Vasilakopoulos, who runs a casual restaurant in Canton, said they were incensed by what unfolded last week.

“What happened wasn’t called for. Protests are one thing; looting is another thing,” he said, adding, “We’re very frustrated because we’re the ones who are going to pay for this.”

There were pockets of optimism, though, that Baltimore would enter a period of reconciliation.

“I’m just hoping for peace,” Natalie Boies, 53, said in front of the Locust Point home where she has lived for 50 years. “Learn to love each other; be patient with each other; find justice; and care.”

A skeptical Mr. Vasilakopoulos predicted tensions would worsen.

“It cannot be fixed,” he said. “It’s going to get worse. Why? Because people don’t obey the laws. They don’t want to obey them.”

But there were few fears that the violence that plagued West Baltimore last week would play out on these relaxed streets. The authorities, Ms. Fowler said, would make sure of that.

“They kept us safe here,” she said. “I didn’t feel uncomfortable when I was in my house three blocks away from here. I knew I was going to be O.K. because I knew they weren’t going to let anyone come and loot our properties or our businesses or burn our cars.”

Baltimore Residents Away From Turmoil Consider Their Role

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