Pendaftaran PPDB Online 2019 untuk SMA/SMK Jabar Dibuka Hari Ini

Pendaftaran PPDB Online 2019 untuk SMA/SMK Jabar Dibuka Hari Ini

Pendaftaran Penerimaan Peserta Didik Baru (PPDB) 2019 untuk SMA, SMK dan SLB di Jawa Barat (Jabar) dibuka mulai hari ini, Senin (17/6/2019). Dikutip dari situs resmi, PPDB online Jabar ini dibuka hingga 22 Juni 2019.

Pendaftaran secara online dengan bantuan operator satuan pendidikan dengan cara mengunjungi laman PPDB Provinsi Jawa Barat di http://ppdb.disdik.jabarprov.go.id.

Pada PPDB Jabar 2019, calon peserta akan didik diberi kesempatan memilih salah satu dari 3 jalur yang disediakan. Pertama, Jalur Zonasi dengan kuota 90 persen, memprioritaskan jarak terdekat dari domisili ke sekolah dengan seleksi berbasis jarak (75 persen).

Di dalamnya sudah termasuk keluarga ekonomi tidak mampu (KETM) 20 persen dan kombinasi jarak serta prestasi akademik (15 persen). Kedua, Jalur Prestasi dengan kuota 5 persen, dapat melalui prestasi UN atau non-UN. Ketiga, Jalur Perpindahan orang tua dengan kuota 5 persen, didasarkan pada perpindahan tugas/mengikuti tempat bekerja orang tua calon peserta didik.

Calon siswa didik yang ingin mendaftar diimbau untuk mempersiapkan sejumlah persyaratan PPDB Jabar 2019. Pertama, siapakan pas foto hitam putih 3 x 4 sebanyak dua lembar. Kedua, fotokopi ijazah dan SHUN SMP atau sederajat yang sudah dilegalisir.

Ketiga, fotokopi akta lahir dan dokumen asli dengan batas usia maksimal 21 tahun dan belum menikah. Keempat, fotokopi dan dokumen asli KTP orang tua.

Kelima, fotokopi dan dokumen asli Kartu Keluarga atau surat keterangan domisili dari RT/RW. Surat keterangan itu menerangkan bahwa calon peserta didik berdomisili di wilayah tersebut paling singkat enam bulan sebelum pelaksanaan PPDB.

Keenam, fotokopi dan dokumen asli Kartu Indonesia Pintar, Program Keluarga Harapan, kartu Indonesia Sehat dan bukti lainnya yang dikeluarkan oleh pemda.

Tata Cara Pendaftaran PPDB Jabar:

  1. Calon peserta didik melakukan pendaftaran ke satuan pendidikan pilihan pertama;
  2. Pendaftaran secara daring dengan bantuan operator satuan pendidikan dengan cara mengunjungi laman PPDB Provinsi Jawa Barat di http://ppdb.disdik.jabarprov.go.id.
  3. Calon peserta didik hanya dapat memilih satu jalur PPDB dari 3 jalur yaitu zonasi atau prestasi atau perpindahan;
  4. Calon peserta didik SMA jalur zonasi (termasuk KETM) dapat memilih: a) sekolah pilihan ke satu dan pilihan ke dua dalam zona yang sesuai tempat domisili, dan b) sekolah pilihan ke tiga pada zona lain terdekat tempat domisili;
  5. Selain melakukan pendaftaran PPDB melalui jalur zonasi sesuai dengan domisili dalam zonasi yang telah ditetapkan, calon peserta didik dapat melakukan pendaftaran PPDB melalui jalur prestasi di luar zonasi domisili peserta didik;
  6. Calon peserta didik SMA jalur prestasi dapat memilih 3 sekolah di dalam atau luar zonasi domisili calon peserta didik;
  7. Calon peserta didik jalur perpindahan dapat memilih 3 sekolah pada satu atau dua zona di luar zona dan atau kecamatan domisili calon peserta didik;
  8. Sekolah pilihan ke tiga pada 4 b, 6 dan 7 ditujukan untuk penyaluran jika kuota di sekolah pilihan ketiga belum terpenuhi.

Jadwal PPDB Online Jabar 2019:

  1. Pendaftaran PPDB pada 17 – 22 Juni 2019
  2. Verifikasi /uji kompetensi pada 24 – 26 Juni 2019
  3. Pengumuman hasil seleksi pada 29 Juni 2019
  4. Daftar ulang 1 – 2 Juli 2019
  5. Awal tahun pelajaran 2019/2020 pada 15 Juli 2019
  6. Masa Pengenalan Lingkungan Sekolah (MPLS) tanggal 16 – 18 Juli 2019

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Corrosion of Steel Strand

Erosion of high carbon steel strand can be a difficult issue in long haul structural designing applications. In mining, be that as it may, the rates of cablebolt consumption causing major issues are uncommon. This is expected fundamentally to the brief span outline associated with open stope bolster in underground mining. 

Corrosion of Steel Strand

Erosion issues seen by the creators in mining situations were normally in long haul bolster in open pits where the groundwater was acidic or saline and in long haul bolster in underground sulfide stores. Cut and fill applications in wet conditions where cracked stope backs could stay (upheld) for up to a year were strikingly helpless to erosion. Genuine disappointment, because of erosion and crack of the strand, can happen in such applications. 

The idea of consumption is to a great degree complex and a central talk is past the extent of this book. It is the purpose here to talk about a portion of the critical elements engaged with erosion so the designer may survey the potential for risky consumption and find a way to avert it or offer the suitable plan lenient gestures for it. 

Most regular refined metals are naturally unsteady ionic materials made out of varieties of single molecules which have a full compliment of electrons. Metals, for example, press ordinarily tend to surrender electrons at room temperature (gold is a striking special case) and end up associated with responses prompting the development of more steady mixes, for example, press oxide or iron hydroxide (rust). The arrival of electrons is named an anodic response and the acknowledgment of electrons a cathodic response. The two responses must happen for erosion to occur. Since metals, for example, the iron found in steel link are ordinarily ready to surrender their electrons, it is regularly the nearness of a cathode which decides the consumption potential. 

The cathodic response (including the utilization of electrons discharged anodically from the iron) can be made conceivable by the nearness of a corrosive, sulfate, water and additionally oxygen. 

Erosion of steel (press) can be partitioned into four fundamental classes (Illston et al., 1979; Pohlman, 1987): 

– Dry consumption 

– Wet consumption 

– Consumption of inundated metals and combinations Instigated or quickened erosion (incorporates impact of pressure) 

The accompanying discourse is bound to erosion of cablebolts and in that capacity is fragmented as a far reaching examination of general consumption. 

Dry Consumption 

Dry consumption is an unavoidable outcome of medium-to long haul stockpiling of cablebolts in even the best conditions. It includes the arrangement of iron oxide (Fe0) as iron iotas join with air oxygen. When the procedure starts on a perfect surface, it spreads reasonably quickly to include the vast majority of the uncovered surface. While Fe0 shapes a disciple film on steel surfaces and can really frame an impenetrable layer, it tends to be helpless against breaking and all things considered crisp iron is continually being uncovered and the procedure proceeds. In the point of view of cablebolting in mining, notwithstanding, dry oxidation is a generally moderate compound process and is of just minor result. Light surface (dry) erosion has been appeared (Goris, 1990) to enhance security execution of cablebolts by up to 20% in perfect conditions, albeit conscious rusting of cablebolts isn’t upheld by the creators. The procedure is quickened by higher surface temperatures (e.g. on the off chance that the links are uncovered every day, over extensive stretches, to immediate and exceptional daylight). 

Overwhelming surface rust on recently sent links is typically the consequence of introduction to dampness and ensuing barometrical erosion which can be exceptionally unfavorable to the execution of the cablebolts. 

Wet or Climatic Erosion 

In a wet or muggy condition, the erosion procedure is quickened and can include a more extensive assortment of cathodic responses. Water and oxygen turn out to be together associated with the cathodic response and result in different mixes, for example, 2Fe(OH) ,3Fe O (magnetite), or Fe O (hema 3 4 2 3 tite). These mixes are significantly less cement then FeO and more averse to frame a self-capturing film. 

Consumption items framed on cablebolts by wet erosion will probably have an oily vibe when contrasted with the dry, harsh surface of FeO film and will probably be related with other film substances, for example, oils and extra dampness. These items are probably going to detrimentally affect bond limit of cablebolts. Unmistakably, unchecked erosion diminishes the cross-sectional territory of steel in the link and at last lessens the tractable limit of the steel to inadmissible levels. Flexibility and relocation limit is additionally decreased (embrittlement). 

The nearness of water on the surface of the cablebolt additionally builds the potential for galvanic erosion. A similar wet consumption cathodic responses happen, quickened by the nearness of an electrolyte, for example, chloride, sulfate or hydroxide. Without electrolytes in a static arrangement, the erosion procedure is self-constraining. Press particles (e.g. Fe ) move into arrangement contiguous the steel surface 2+ deserting free electrons (2e ) in the steel strong. The centralization of iron particles – in arrangement and free electrons in the steel makes an electrical potential contrast which opposes facilitate disintegration of iron particles. 

The impacts of electrolytes in the surface water is best outlined in the above model. A drop of water on the surface of the steel contains a disintegrated electrolyte, for example, sodium chloride (which shapes an answer of free sodium, Na ,+ and chloride, Cl , particles). The nearness of electrolytes allows the vehicle of iron – particles as FeCl far from the erosion (anode) site at the focal point of the drop. In the meantime, water and oxygen join at the edge of the drop with the free electrons from the steel to shape hydroxide particles (Gracious ) adjusted by Na in arrangement. – + These move the other way to the FeCl creating a current (electron stream) in the steel providing electrons to the drop edge as more iron particles go into the arrangement at the drop focus. Between the dynamic focus (anode) and the drop border (cathode) the iron particles join with the hydroxide to shape ferrous hydroxide. 

This thus turns into a generally steady and complex hydrated oxide known as rust. The sodium and chloride transport particles are liberated to bear on the procedure. The cyclic idea of the procedure joined with the way that the erosion item (rust) isn’t kept at the anode (all things considered with dry consumption) implies that this type of galvanic erosion isn’t self-constraining and can be extremely forceful. This is especially valid in mining conditions given the high convergence of chloride and sulfate particles in mine waters (Minick and Olson, 1987). 

Damp consumption is especially upgraded by fissure, for example, those shaped by the flutes of a link. Hole are especially great at holding dampness and the conditions are ideal for differential air circulation with low oxygen supply at the tip of the fissure contrasted and whatever is left of the link. In the event that a powerless electrolyte is available, a forceful consumption cell is in this way produced. This consumption is especially unfavorable as the erosion item (rust) promptly fills the flutes of the link keeping the infiltration of grout and genuinely diminishing the link/grout interlock fundamental for link security quality.

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Mine Ventilation System

A mine ventilation system is related to the magnitude and direction of air movement through the various working places in the mine. The supply of air is referred to as air distribution, and it is accomplished by adopting a ventilation circuit suitable for the particular mining method used for extraction. In sublevel stoping, primary development openings such as shafts and ramps are used for main airways for ventilation, while the individual levels can be used as intakes and outlets using unidirectional air distribution.

Mine Ventilation System

Sublevel stoping mines are likely to have extensive workings on each level, as well as between levels, and therefore require ventilation from combined vertical and horizontal circuits. The stopes are designed to allow flowthrough ventilation between the sublevels connected by the stopes. The overall objective is to supply fresh air to each level from a downcast pressure source, radiating outward and upward through the working places to exhaust airways leading to upcast shafts.


In general, the airflow should be in an opposite direction to the stope retreat direction, so that dust and fumes are kept away from the operators. Consequently, the ventilation design for a stoping block will consist of access to fresh air, either from fresh air raises or a decline, as well as a return air exhaust system. The preferred approach is to ventilate each stope with a separate split of air, with the air introduced to the working places from the lowest level. Separate exhaust openings may be required to prevent contaminated air from entering other stopes in a stoping block. Ventilation shafts and airways must be located and maintained in ground which will not be caved and lost during the lifetime of the operation. In addition, short circuitry and dust hazard created by air leakage up or own partially filled orepasses must be prevented.

Global Economic Assessment

A number of global design considerations must be analyzed and economically evaluated to arrive at the optimum design for a stoping block. The outline of the orebody is determined by cutoff grade evaluations that account for the cost of block development, mining cost, haulage, surface cartage, mineral processing, and general overhead costs. A financial model is used to determine the viability by comparing the unit cost of all the steps involved in mining and processing with the estimated revenue. This could be an iterative process as, once the cost of development is included, some stoping blocks may prove not to be economical. However, they may become economic if development is carried out through those blocks to access other more economic areas.


Thomas and Earl (1999) have described a computerized stope optimization tool that can be applied in the strategic planning of underground stopes. The technique can be used to generate an extraction sequence in conjunction with an optimum stope configuration that maximizes the net present valueof an operation. The tool is used to generate inventories for a series of cutoff grades, and the results are scheduled to produce net present value (NPV) versus tonnage relationships.

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Why did Malcolm X convert to Islam?

Why did Malcolm X convert to Islam?
Why did Malcolm X convert to Islam?

Before prison, Malcolm X was raised as a Christian but became an ardent atheist during his teenage years. After dropping out of school in 9th grade, he led a life full of crime. However, during one of his burglaries, Malcolm X was caught and given a lengthy sentence in prison.

In prison, Malcolm was nicknamed “Satan” because he cursed out God and the Bible so much, he would often end up in solitary confinement because of it.

During his time in prison, Malcolm’s brother Reginald came to him and told him about a man named Elijah Muhammad and the Nation of Islam. Not long after, Malcolm and Elijah started exchanging letters and then Malcolm converted to the Nation of Islam, aka “The Black Muslims.” Elijah Muhammad referred to himself as a messenger of Allah. Many of the beliefs of the Nation of Islam didn’t coincide with the beliefs of real Islam. (i.e. Believing “Allah came in the person of Fard Muhammad.”)

His exchange with Elijah Muhammad caused Malcolm X to start reading books on philosophy and genetics. He then started teaching the religion of “The Black Muslims”, to the other inmates and pretty soon he gathered a large following.

Upon his release from prison, Malcolm served Elijah Muhammad for a long time. Malcolm was his best assistant. Malcolm was now an ardent believer in the religion and often went on to the streets to try to get other people to convert to the Nation of Islam.

While serving Elijah Muhammad, Malcolm X started hearing rumors that Elijah Muhammad had gotten multiple of his secretaries pregnant. At first, Malcolm didn’t believe the rumors. Later, Elijah Muhammad’s son came to Malcolm and confirmed the rumors. Malcolm was devastated, he couldn’t take in the fact that his idol, a proclaimed “messenger of God” had broken the very same rules that he preached, so he left the Nation of Islam.

Malcolm was now at an identity crisis, he was still a Muslim, just not a “Black Muslim” anymore.

So in April 1964, Malcolm decided to go on “Hajj”, the mandatory requirement for a Muslim to go on a pilgrimage to Mecca. When he was there, Malcolm said in a letter back to his friends:

“America needs to understand Islam, because this is the one religion that erases from its society the race problem. Throughout my travels in theMuslim world, I have met, talked to, and even eaten with people who in America would have been considered white – but the white attitude was removed from their minds by the religion of Islam. I have never before seen sincere and true brotherhood practiced by all colors together, irrespective of their color, You may be shocked by these words coming from me. But on this pilgrimage, what I have seen, and experienced, has forced me to rearrange much of my thought-patterns previously held, and to toss aside some of my previous conclusions. This was not too difficult for me. Despite my firm convictions, I have always been a man who tries to face facts, and to accept the reality of life as new experience and new knowledge unfolds it. I have always kept an open mind, which is necessary to the flexibility that must go hand in hand with every form of intelligent search for truth.”

Upon returning from Hajj, Malcolm converted to Sunni Islam due to his experience at the Hajj. Malcolm started to learn about the rules and the prayers of a Muslim and was starting to practice “real Islam.” At the same time, Malcolm started speaking out against Elijah Muhammad. This drew a lot of anger and criticism from followers of the Nation of Islam.

On February 21, 1965, Malcolm X was shot just after saying “Assalamualikum” to a room full of his followers.

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Computer Network Management Tutorial

Today it is almost inconceivable for a business not to have computers, whether it is a construction company or a high technology firm. When a business has more than one computer, they are almost always connected together in a local area network. These networks may be more or less advanced and therefore more or less costly.

Companies invest so much (in terms of both money and time) in a local area networks because there are many advantages that a local area network brings to a business and how it is administered.

Computer Network Management Tutorial

Some businesses use a local area network in such a way they are highly dependent on it always working. If the company’s network fails, then you may see all the employees chatting away in the corridors because they can’t do their work. This means big losses for the company and causes stresses on the employees. All companies must consider their local area networks a vital asset and downtime must be avoided. This imposes huge demands on the network staff to keep such networks running almost 100% of the time.

The advantages of Computer Network Management

One of the main advantages of installing and maintaining LANs is the opportunity they create for better communication and cooperation between employees and customers.

Security considerations: Local Area Network security can be both a help and hindrance. Comprehensive security is beneficial because it provides a central and safe strategy for data access and disaster recovery. All information is protected by the design and implementation of the network security solution. On the other hand, interconnecting computers in local area networks creates a security risk, since doing so makes it technically possible for intruders to access many machines on the network at once.

Cost considerations: Installing a local area network is a relatively expensive project. Servers, cabling, switches, routers and software can all be expensive and should never be purchased without expert advice. Keeping the network operating and secure also requires a lot of resources and can be costly.

Surprisingly, a local area network can bring a number of cost savings. Sharing resources avoids the need to purchase equipment for each individual. Even more important is the security that a local area network can provide. Data loss could cost a business a great deal of money and in some cases, cause the business to shutdown altogether. Computer Network Management should require a consistent routine for data backups with regular checkups of data quality – a practice that will save a company huge sums in the event of a mishap.

Computer Network Management: preliminary analysis phases

The first phase of computer network management is to determine the source of the problem (a preliminary study that looks into several options of differing scope may be useful here) and defining it in a specification of requirements. Examples of what should be evaluated are different network operating systems, mail systems, and other applications. The choice of hardware components should also be evaluated. This phase is generally aimed at establishing what the system should do, not how it should do it.

Computer Network Management: design phase

The purpose of design phase is to determine how the requirements of the specification are to be met. The current approach to large, complex projects is to break them down into smaller, more manageable subprojects.

Computer Network Management: implementation phase

This phase involves the physical installation of the local area network. Cables are run, software is installed, and computers and other hardware are put in place.

Computer Network Management: integration and system testing phase

In this phase, commissioning of the network begins, and routines are adapted to users and the operating personnel. The system must be tested, both to ensure that the network meets the requirements set out in the specification and that it is stable enough to perform the central function it has in the organization.

Computer Network Management: operation and maintenance

Local area networks have complex operating routines. This is because there may be serious consequences when faults occur or unauthorized persons gain access to the system. Many companies have employees devoted solely to take care of running and maintaining computer networks. These system administrators may deal with network issues such as performance, reliability and security of both hardware and software.

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