Block cipher merupakan salah satu teknik dalam kriptografi modern yang digunakan untuk melakukan enkripsi/dekripsi pada data digital dengan membagi pesan menjadi blok-blok data dan melakukan enkripsi/dekripsi pada tiap blok. Penelitian ini bertujuan untuk merancang suatu block cipher berbasis pada pola dribbling practice sebagai variasi dari block cipher yang telah ada. Dalam perancangan block cipher ini, diterapkan prinsip-prinsip dalam desain block cipher seperti, kotak substitusi (substitution box), operasi XOR, jaringan Feistel, dan transposisi kunci. Nilai avalanche effect (AE) dan nilai korelasi antara plaintext dan ciphertext digunakan sebagai ukuran (metric) dalam pengujian terhadap block cipher yang dirancang. Hasil pengujian block cipher menghasilkan nilai AE sebesar 54.687% jika terdapat perubahan satu karakter pada input plaintext, sehingga sedikit perubahan pada plaintext akan mengubah ciphertext yang dihasilkan secara signifikan. Selanjutnya, nilai korelasi antara plaintext dan ciphertext yang diperoleh adalah 0.247 (korelasi rendah) sehingga sangat sulit untuk memperoleh kembali plaintext dari ciphertext-nya.

PIP is a program created to help students from low-income families to continue to receive educational services until they graduate from secondary education. The problem that often occurs is that there are underprivileged students who are not listed as recipients of the aid or scholarship. The purpose of this study was to apply the Preference Ranking Organization Method for Enrichment Evaluation (PROMETHEE II) in the case of underprivileged students who received assistance. PROMETHEE II is a method of sorting or prioritizing in multi-criteria analysis, namely a decision-making technique from several choices.

Abstract The implementation of knowledge sharing with a system by sharing several web-based teaching materials, may be a solution for STEKOM needs. Lack of lecturers’policy and culture to implement knowledge management (knowledge sharing)of the web-based teaching materialsresulting in lecturer's knowledge cannot be shared well. The purpose of this research is for implementing knowledge management system as teaching material for improving the competence of STEKOM lecturers. This research uses the development of 10-step knowledge management roadmap method system made by Amrit Tiwana, 1999 and summarized into 4 phases, i.e.: 1. evaluation of infrastructure; 2. analysis, design and development of KMS; 3. deployment system; 4. evaluation of system design methods. Results of this research indicated that operation of the KMS has a great opportunity in terms of knowledge transfer by forming a sharing culture of web-based teaching materials on STEKOM. This constitute as an alternative for improving the teaching quality . Sharing of teaching material not only carried out in the internal environment of the STEKOM branch, but also among lecturers of STEKOM branch and between STEKOM lecturers and students

Abstract The management of raw material inventory is a very important part for a company. In the process of inventory management of raw materials conducted on CV.Alinea Java until now still using conventional system using Microsoft Excel 2007, starting from material estimation, ordering process of goods to supplier, process of receipt and expenditure of raw materials, raw material returns, addressed to the leadership and related sections. And the utilization of wireless networks that are less effective because only connected computer warehouse administration and purchasing, not all users, to overcome the above problems, it is necessary information that utilizes the inventory management information system raw materials with computer network based client server using a new system of mutual terintregrasi all users so that all interested parties can access the desired data of course with certain restrictions, according to the status entered. Then created a system of inventory management information raw materials server client base on CV.Alinea Java by using Microsoft Visual Basic 6.0 and Microsoft SQL Server 2000 database that will assist in the process of data processing system.

The development of microcontroller technology that is rapidly making applications to be developed as a work in the field of technology that can help and facilitate human activities. Researchers see that current technological developments there are many uses of loadcell sensors to detect weight on objects. The number of factors that affect the weight difference between digital scales and scales very significant conventional. Therefore researchers analyzed the use of loadcell sensors for calculate solid and liquid objects and analyze the work system and the accuracy of the accuracy on the loadcell sensor in calculating the weight of solid objects and liquid objects.

n this digital era and the increasingly developing human resources, it is possible to create new research in this era of development. One example of its development is the discussion of the concept of serial communication. In technology, we know the name of the serial communication. In today's world serial communication is the forerunner of communication between platforms in general. In this journal we will know what serial communication is, it is a communication method that is carried out one way and the concept of sending data is bit by bit or, in other words serial communication is one method of data communication that is sent over a cable which gets one bit of data in a a certain time simultaneously and alternately. In this study using the main tool namely the HC-05 bluethoot module which is used as a master and slave.

Consortium biofertilizer containing Nitrogen (N) Fixing Bacteria and Phosphate (P) Solubilizing Bacteria may substitute inorganic fertilizer in vegetable production. A greenhouse experiment was conducted to evaluate the effect of some combinations and doses of consortium biofertilizer and NPK compound fertilizer on available N and P in the soil, fresh weight of caysim (Brassica chinensis L. var. parachinensis.), and their uptake by caisim shoots after grown in low fertility soil. The experimental design was a randomized block design consisting of seven combinations and doses of consortium biofertilizer and compound fertilizer; and three control treatments. All treatments were repeated three times. The results showed that the combination of the which combination treatment of inorganic fertilizer and biofertilizer had a significant effect on the fresh weight of caysim shoots, available P and N and P uptake after harvesting compared to the biofertilizer treatment alone or without fertilization. Several treatments of combined doses of biofertilizers and NPK compound fertilizer produced the same yield as NPK compound fertilizer alone. The application of 300 kg/ha of compound fertilizer combined with 3,75 L/ha of biofertilizer enabled to increase the yield up to 16% compared to NPK fertilizer alone. This experiment explained that inoculation of biofertilizers can reduce the dose of NPK fertilizer to maintain yield, available P residue in soil and P uptake

Potassium is one of the primary macro nutrients along with N and P nutrients, which plants need in large quantities. Lack of K nutrients, one of which can inhibit photosynthetic transport to plant seeds. The availability of K nutrients in paddy soil varies greatly depending on the chemical properties of other soils. This paper aims to evaluate the nutrient K characteristics of paddy fields, the K contribution from irrigation water and harvested straw, and the response of fertilization to rice yields. The availability of K nutrients, apart from being influenced by clay mineral composition, clay content, organic C and soil CEC, is also influenced by N fertilization, soil pH, exchangeable of Ca and Mg, and N-total. The content of potential K and exchangeable of K increases in paddy fields which are further east of Java Island because they have soil with parent material that is rich in potassium minerals. The content of exchangeable K is very closely related to the potential K with R2 = 0.53 (n = 73). Based on the map of the nutrient status of K rice fields with a scale of 1:250,000 in 23 provinces in Indonesia, it is known that most of the paddy fields have moderate K status at 37% and high 48%. The K content in paddy soil can be contributed by irrigation water as much as 7-74 kg K/ha/season. If all of the remaining rice straw from crop yields is returned to the field, the K nutrient requirements for rice plants in the medium and high K nutrient status fields have been fulfilled. The response to K fertilization in rice plants was only visible when the exchangeable K content < 0.10 cmol(+)/ kg. The policy implication of this paper is that K fertilization is focused on paddy fields with low K content, the effectiveness of K fertilization can be increased by returning rice straw from crop residues and proper N fertilization.

Penelitian ini bertujuan untuk menganalisis karakteristik butir soal ujian nasional matematika SMP/MTs bedasarkan teori klasik. Penelitian ini merupakan penelitian eksploratif dengan pendekatan kuantitatif. Data yang digunakan pada penelitian adalah data sekunder dengan mengambil data ujian nasional mata pelajaran matematika tahun 2015 untuk Propinsi Papua. Pada penelitian ini, responden dikelompokkan menjadi dua kelompok yaitu kelompok tinggi dan kelompok rendah berdasarkan jumlah skor yang diperoleh setiap peserta tes. Untuk menganalis karakteristik butir soal yang terdiri dari indeks kesukaran, daya pembeda dan reliabilitas, dilakukan dengan bantuan program Excel dan QUEST. Hasil analisis menunjukkan nilai rerata dari indeks kesukaran butir kelompok tinggi berada pada kategori sedang dan kelompok rendah pada kategori sukar, nilai rerata daya pembeda kelompok tinggi dan rendah menunjukkan kategori tidak baik, yang artinya soal tersebut tidak dapat membedakan kemampuan peserta didik berkemampuan tinggi dan yang berkemampuan rendah hal ini dapat disebabkan peserta tes menjawab soal dengan cara menebak sehingga tidak memberikan hasil yang sesuai. Reliabilitas butir kelompok tinggi dan rendah memiliki nilai indeks yang mendekati + 1,00 yang menunjukkan reliabilitas yang tinggi. Berdasarkan hasil analisis butir soal tersebut, dapat disimpulkan bahwa soal tersebut layak digunakan. Dasil hasil analisis, diberikan saran untuk soal pengujian di tiap-tiap daerah supaya disesuaikan dengan kondisi lingkungan dan peserta didik di masing-masing daerah.

Previous studies indicated that the majority of second language teachers were in serious hurdles in reconstructing their identities formation. The major hurdles that matter most in this debilitating inhibition are the lack of extensive emotional supports, minimum exposure of teaching ownership, and contradicting educational paradigms. This qualitative study aimed to further investigate Indonesian novice EFL teachers’ perceptions of their identity construction. To gather reliable data, the critical incident technique manifested in the form of seven critical self-reflection inquiries were being asked to 3 invited novice EFL teachers possessing a vast range of teaching experiences resided in various Indonesian educational institutions. Three major themes were drawn from the interviewees’ excerpts namely the importance of inducing more proactive teaching-learning engagement, establishing mutual rapports with learners as well as working colleagues, and rejuvenating the ongoing professional identity construction aligned with external institutional demands.