Judul: Efektivitas Sistem Penilaian Kinerja (DP2K) terhadap Pengembangan Karir Karyawan Level Pimpinan Kantor Direksi PT Perkebunan Nusantara VIII
Abstrak: Penelitian ini membahas mengenai efektivitas sistem penilaian kinerja melalui DP2K terhadap pengembangan karir karyawan level pimpinan pada kantor direksi PTPN VIII. Dilatarbelakangi adanya permasalahan mengenai pelaksanaan penilaian kinerja melalui DP2K yang masih dilakukan sebatas formalitas penilaian dan tidak sesuai pedoman yang telah ditetapkan. Metode yang digunakan adalah analisis deskriptif dan regresi linear berganda. Penelitian ini bertujuan untuk mengetahui persepsi dan tingkat pengaruh efektivitas dari sistem penilaian kinerja (DP2K) terhadap pengembangan karir karyawan. Sampel yang digunakan dalam penelitian ini berasal dari level pimpinan sebanyak 61 orang. Hasil analisis deskriptif menyatakan tingkat persepsi karyawan level pimpinan terhadap sistem penilaian kinerja belum sepenuhnya efektif namun persepsi terhadap pengembangan karir telah dijalankan dengan efektif. Berdasarkan penghitungan pengaruh sistem penilaian kinerja terhadap pengembangan karir karyawan menyatakan keduanya berpengaruh, namun berdasarkan indikator sistem penilaian kinerja hanya kepekaan, keterandalan, dan dapat diterima yang telah dijalankan secara efektif terhadap pengembangan karir.
Keyword: efektivitas, persepsi, pengembangan karir, sistem penilaian kinerja

Judul: The Influence of Performance Appraisal and KPI’s  Allignment on the Employees’ Performance of Operational Division at PTPN VIII.
Abstrak: Penerapan penilaian kinerja menggunakan Key Performance Indicators pada Divisi Operaional PTPN VIII belum dilakukan secara maksimal. Pencapaian KPI Divisi Operasional yang cenderung menurun pada semester I tahun 2020. Penelitian ini bertujuan untuk mengidentifikasi efektivitas penilaian kinerja, mengidentifikasi kesesuaian antara penerapan KPI divisi dengan individu, dan mengidentifikasi kinerja karyaawan pada Divisi Operasional, dan untuk menganalisis pengaruh penilaian kinerja dan kesesuaian KPI individu dengan divisi terhadap kinerja karyawan Divisi Operasional di PTPN VIII. Penelitian ini menggunakan metode penelitian analisis deskriptif dan analisis regresi linier berganda. Penentuan sampel menggunakan metode non-probability sampling dengan jenis pengambilan sampel yaitu. Hasil penelitian menunjukkan bahwa penilaian kinerja efektif, cascading KPI sesuai, dan kinerja karyawan sangat tinggi. Selain itu, hasil menunjukkan bahwa penilaian kinerja dan kesesuaian KPI keduanya memiliki pengaruh yang positif dan signifikan terhadap kinerja karyawan Divisi Operasional di PTPN VIII. Hal ini berati bahwa semakin efektif sebuah penilaian kinerja yang digunakan dan semakin sesuai antara KPI divisi dengan KPI individu yang diterapkan maka kinerja karyawan akan semakin tinggi., Implementation of performance appraisal using Key Performance Indicators in PTPN VIII Operational Division which has not been carried out optimally. Operational Division KPI achievement which tends to decrease in the first semester of 2020. This study aims to identify the perceptions of operational Division employees on the effectiveness of performance appraisals (KPI), identify the allignment between the KPIs in the Operational Division and individual KPIs, as well as to determine the effect of performance appraisals (KPI) and the suitability of individual KPIs with divisions on the performance of operational Division employees. at PTPN VIII. This study uses descriptive analysis research methods and multiple regression analysis. The determination of the sample using the non-probability sampling method with the type of sampling census. Based on the research, employees perception on performance appraisal is already in effective category and an KPI’s alignment is already in allign category. Also, both of the are have positive and significant effect on employee’s in Operational Division at PTPN VIII. This means that the more effective a performance appraisal is used and the more appropriate the divisional KPIs with individual KPIs are applied, the better the employee's performance will be.
Keyword: Employee’s Performance, Key Performance Indicators, Performance Appraisal

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