Judul: Sistem Penyelenggaraan Makanan dan Tingkat Kepuasan serta Daya Terima Konsumen terhadap Soto Uncu Padang
Abstrak: Penelitian ini bertujuan untuk menganalisis penyelenggaraan makanan dan tingkat kepuasan, serta daya terima konsumen terhadap Soto Uncu Padang. Penelitian ini merupakan studi kasus yang menggunakan analisis deskriptif. Jumlah Sampel sebanyak 94 orang dipilih secara purposive. Soto Uncu mendapatkan nilai higiene sanitasi 93% untuk golongan A2 yang merujuk kepada kemenkes nomor 1096/MENKES/PER/VI/2011 tentang persyaratan higiene sanitasi jasa boga. Berdasarkan analisis pelayanan terpenting (Importance Performance Analysis=IPA) atribut kebersihan ruangan dan tempat makan dinilai paling penting. Nilai indeks kepuasan konsumen (Customer Satisfaction Index = CSI) Soto Uncu adalah sebesar 79%, yang menunjukkan bahwa konsumen merasa puas. Hal ini didukung dengan daya terima konsumen yang baik. Kontribusi energi dan zat gizi pada satu porsi soto menyumbang pada laki-laki energi 17%, karbohidrat 24%, protein 17% dan lemak 25%, sedangkan pada perempuan energi 21%, karbohidrat 29%, protein 21% dan lemak 31%.
Keyword: daya terima, kepuasan konsumen, kontribusi energi dan zat gizi, penyelenggaraan makanan

Judul: Analisis penyelenggaraan makanan dan tingkat kepuasan konsumen di Restoran Sate Tegal Laka-laka
Abstrak: Penelitian ini bertujuan untuk menganalisis penyelenggaraan makanan dan tingkat kepuasan konsumen di Restoran Sate Tegal Laka-laka. Penelitian ini bersifat studi kasus dan menggunakan analisis deskriptif. Metode penarikan sampel dilakukan secara purposive dan 91 konsumen digunakan dalam penelitian ini. Restoran Sate Tegal Laka-laka merupakan salah satu contoh penyelenggaraan makanan komersial dengan menu utama sate. Penyelenggaraan makanan di Restoran Sate Tegal Laka-laka terdiri dari perencanaan (anggaran) dan pelaksanaan (pengadaan bahan makanan, penerimaan, penyimpanan, pengolahan, dan penyajian). Penilaian higiene dan sanitasi merujuk pada Kepmenkes nomor 1098/Menkes/SK/VII/2003 tentang Persyaratan Higiene Sanitasi Rumah Makan dan Restoran. Restoran Sate Tegal Laka-laka mendapatkan skor 902 yang termasuk dalam tingkat mutu A. Berdasarkan hasil analisis Importance Performance Analysis (IPA) menunjukkan bahwa atribut cita rasa makanan/minuman yang disajikan dirasa paling penting dan dinilai paling tinggi tingkat kinerjanya. Berdasarkan Customer Satisfaction Index (CSI), diperoleh nilai kepuasan sebesar 77.79 (puas). Hasil uji korelasi menunjukkan adanya hubungan yang signifikan (p<0.05) antara tingkat pendidikan dengan penilaian atribut mutu produk., This research aimed to analyze food service and level of customers satisfaction in Sate Tegal Laka-laka Restaurant. Case study design was applied in this study and analyzed using descriptive analysis. Sampling method of purposive sampling was carried out and number of subjects used was 91 customers. Sate Tegal Laka-laka Restaurant is one example of the commercial food service with satay as the main menu. Food services in Sate Tegal Laka-laka Restaurant consist of planning (budget) and implementation (purchasing, receiving, storing, processing, and distributing). Assessment of hygiene and sanitation were based on Kepmenkes No. 1098/Menkes/SK/VII/2003 about Requirements of Hygiene Sanitation Restaurant. Sate Tegal Laka-laka Restaurant got score 902 were categorized in the quality level A. The result of analysis based on Importance Performance Analysis (IPA) showed that the taste of food/beverages served attributes was considered as the most important and had the highest rate performance levels. Based on the Customer Satisfaction Index (CSI), the satisfaction value was 77.79 (satisfied). There was a significant (p<0.05) correlation between education level with quality of the product.
Keyword: CSI, IPA, kepuasan konsumen, penyelenggaraan makanan

Judul: Algorithm construction of HLI hash function
Abstrak: Cryptography is a study of mathematical techniques related to aspects of information security regarding on confidentiality, data integrity, entity authentication, and data origin authentication. Data integrity is a service, which is associated with the conversion of data carried out by unauthorized parties. To maintain data integrity, one can use hash functions. An hash function is a computationally efficient function to map an arbitrary length bitstring to a fixed length bitstring called as hash value. The use of hash function in maintaining the information integrity and authentication is in digital signatures, virus protection, and software distribution. Illustration of the hash function in the integrity and authentication of information that is emailed as follow. The sender sends the information and hash value to the recipient. If the hash value of the information is equal to the hash value that is sent by the sender, then information has not been changed. Otherwise the information has been changed. An hash function has two properties, one way and collision resistance. An hash function is called one way if it is computationally infeasible to find any input such that when given any hash value . Meanwhile an hash function is called collision resistant if it is computationally infeasible to find any two inputs where such that . The purpose of this study is to construct a HLI hash function algorithm, to analyze the speed and security of the hash functions as a results of construction. Furthermore, it is to compare it with SWIFFT. Hash function is constructed based on the result of algebraic operations on modular polynomial ringwith . Modular polynomial ring noted as is a set of all polynomials of degree at most with coefficients in . can be represented as a set of integer vector of modulo in dimension . So, it is simple to implement in a computer. In vector operations, is lattice . Furthermore, alattice that is defined from certain polynomial ring is called ideal lattice. HLI hash function is consists of addition and multiplication algorithm in the ring. Addition algorithm consists of sumation operations of modulo and multiplication consists of multiplication operations of modulo . Generally, algorithm of HLI hash function consists of multiplication operations of modulo and addition operations of modulo . However, if the input is binary number then multiplication algorithm only consists of multiplication operation of modulo , so algorithm of HLI hash function consists of multiplication operations of modulo and addtion operations of modulo . An hash function is secured if it has two properties, i.e., one way and collision resistance. HLI hash function hash is one way, it is following the proof of Micciancio. It is has collision resistant because of polynomial is irreducible over and monic. Moreover, it is proved that for every unit vector , the vector is small vector. If the input of hash function is a binary number then HLI hash function only involves addition operations of modulo . So the time that used almost same with SWIFFT. The excellence of HLI hash function is the key size smaller than SWIFFT. This effect on
Keyword: hash function, modular polynomial ring, lattice