Model Volatilitas ARCH(1) dengan Returns Error Berdistribusi non-central Student-t Studi Kasus: Kurs Beli JPY dan EUR terhadap IDR

Studi ini mengaplikasikan model volatilitas Autoregressive Conditional Heteroscedasticity (ARCH) lag 1 untuk returns kurs beli Japanese Yen (JPY) dan Euro (EUR) terhadap Indonesian Rupiah (IDR) dari Januari 2009 sampai Desember 2014. Distribusi non-central Student-t (NCT) dipilih untuk mengakomodasi flexible skewness dan heavy-tailedness pada returns error. Algoritma Markov Chain Monte Carlo (MCMC) yang efisien dikonstruksi untuk memperbarui nilai-nilai parameter dalam model yang tidak bisa dibangkitkan secara langsung dari distribusi posterior. Berdasarkan 95% interval highest posterior density (HPD), hasil menunjukkan penolakan terhadap distribusi NCT untuk semua data yang diamati. Meskipun begitu, Bayes factor mengindikasikan bukti sangat kuat dalam mendukung penggunaan distribusi NCT daripada distribusi normal dan Student-t. Kata Kunci : kurs beli, MCMC, model ARCH, non-central Student-t, volatilitas return

The Effect of Person–Job Fit to Job Involvement With Intrinsic Motivation as Intervening Variable

Background: Indonesia is incorporated in the ASEAN Economy Community (AEC). AEC’s impacts encourage companies to compete competitively to maintain their existence among competitors. Therefore, the company requires employees who have high levels of job involvement to be able to work effectively and efficiently. Job involvement is a positive attitude that encourages employees to contribute positively to the work. Purpose: To analyze the effect of person–job fit toward job involvement with intrinsic motivation as an intervening variable. Method: Data were collected with simple random sampling method, through observation and questionnaires that involved 131 employees from the central office at PT. Bank Pembangunan Daerah Jawa Timur Tbk’s Surabaya. Technical data testing used is SEM-PLS and Sobel test to study the effects of mediation. Result: Person–job fit influence is positively significant toward job involvement and intrinsic motivation. Intrinsic motivation proved to be a mediator in the relation between person–job fit and job involvement.     Keywords: person–job fit, intrinsic motivation, job involvemen

Pengaruh Perbedaan Ukuran Utama (Principal Dimension) Pukat Tarik Cantrang Terhadap Hasil Tangkapan Di Perairan Brondong-lamongan

Semakin pesatnya perkembangan teknologi penangkapan serta adanya larangan penggunaan alat tangkap trawl, maka nelayan lamongan terutama di perairan Brondong banyak yang menggunakan pukat tarik cantrang. Demi mendapatkan hasil tangkapan yang banyak para nelayan memodifikasi ukuran utama pada pukat tarik cantrang yang mereka gunakan. Tujuan penelitian ini untuk mengetahui seberapa besar pengaruh pada ukuran pukat tarik cantrang yang berbeda ukuran utama serta yang paling dominan sehingga hasil tangkapan bertambah. Metode deskriptif digunakan dalam penelitian ini, pengambilan sampel menggunakan metode Proportionate Stratified Random Sampling. Penelitian dilakukan di dua tempat yaitu Desa Brondong dan Desa Kandangsemangkon. Analisis data yang digunakan ada dua yaitu regresi sederhana dan regresi berganda. Dari hasil analisis regresi sederhana dan berganda terdapat persamaan hasil yaitu bagian pukat tarik cantrang yang paling berpengaruh terhadap hasil tangkapan adalah penambahan panjang tali penarik, dalam regresi sederhana mempunyai pengaruh terhadap hasil tangkapan sebesar 0,396 kg jika ada penambahan 1 m pada panjang tali penarik. Pada regresi berganda jika panjang tali penarik ditambah 1 m maka hasil tangkapan akan meningkat sebesar 0,323 kg. Jadi, bagian yang paling dominan mempengaruhi hasil tangkapan adalah panjang tali penarik

Studi Akumulasi Logam Timbal (Pb) Dan Efeknya Terhadap Kandungan Klorofil Daun Mangrove Rhizophora Mucronata

Mangrove is a coastal plant which is vurneable to heavy metal pollution , whether from land or from the sea . More industrial development resulted in high levels of waste pollution .Various industrial waste into coastal waters will threat coastal vegetation like as mangrove. Rhizophora mucronata is one kind of mangrove with the highest population and is most often found around the coastal areas. Many industrial activities dischange lead (Pb), where Pb is one of the heavy metals that can not be degraded, can be accumulated in organism. This study aimed to know the accumulation of plumbum in mangrove the influence of difference concentration of Pb and exposure duration on chlorophyll content of R. mucronata mangrove leaves. The research was conducted in July-August 2012 at the Marine Science Campus , Faculty of Fisheries and Marine Science , Diponegoro University , Semarang. Mangrove saplings used was R. mucronata ± 8 months old . Mangrove test was placed on the test media with concentrations of 20 , 100 , and 500 ppm . Each treatment was triplicates and analysis for chlorophyll content was done every 10 days. The results of study can be concluded that the greater Pb concentration the longer the exposure time could decrease of chlorophyll content. But despite the amount of chlorophyll decreased, based on the calculation of the value of phytoremediation (FTD) R. mucronata still be potencial to reduce pollutant movement of Pb in soil/sediment

Peran Employability dalam Hubungan Job Insecurity dan Kepuasan Kerja

Job insecurity is often thought to cause lower job satisfaction. However, research shows that the relationship between these two variables is more complicated than previously assumed. Previous studies fail to provide conclusive results, which indicate that the relationships between job insecurity and job satisfaction may be moderated by other variables. Two variables that can explainthis relationship are employability, defined as employees' perception of their abilities to find a new job, and work status differences (i.e., permanent and contract employees). Therefore, this study hypothesizes that employability will moderate the relationship between job insecurity and job satisfaction for, both, permanent and contract employees. Adapting scales from previous research, this study conducted a cross-sectional survey of 172 employees, comprised of permanent and contract employees, of a logistic services company in Indonesia. Results reveal that employability moderates the relationship between job insecurity and job satisfaction among permanent but not contract employees. This paper also discusses the implication of these results for the advancement of organizational behavior theory, especially for understanding the impact of job insecurity on job satisfaction. Keywords: employability, contracted employees, job Insecurity, job satisfaction, permanent employee

Studi Karakteristik Dan Co-range Pasang Surut Di Teluk Lembar Lombok Nusa Tenggara Barat

Pasang surut merupakan salah satu parameter oseanografi yang sangat berpengaruh di perairan. Pasang surut adalah fluktuasi muka air laut karena adanya gaya tarik benda-benda di langit, terutama matahari dan bulan terhadap massa air laut di bumi. Lokasi Pelabuhan Lembar berada di teluk menarik untuk dikaji mengenai karakteristik dan kondisi pasang surut, informasi mengenai pasang surut berguna untuk aktivitas pelabuhan. Penelitian dilaksanakan pada 1 Mei – 18 Mei 2014 di Perairan Lembar, Lombok, Nusa Tenggara Barat. Data yang digunakan dalam penelitian adalah data pasang surut sebagai data primer dan peta batimetri sebagai data sekunder. Sedangkan metode penelitian digunakan metode diskriptif dimana hasil penelitian dianalisa dan dimodelkan dengan software DHI Mike 21 dan ArcGis 10.1. Hasil penelitian menunjukkan tipe pasang surut Perairan Teluk Lembar adalah pasang surut campuran condong ke harian ganda (Mixed Tide Prevailling Semi diurnal) dengan nilai formzahl 1,1981. Nilai elevasi pasang surut MSL sebesar 1,27m, HHWL sebesar 2,19m dan LLWL sebesar 0,35m. Peta Co-range pasang surut berisi informasi sebaran amplitudo pasang surut, ketika pasang gelombang amplitudo bergerak menuju ke teluk dan ketika surut gelombang amplitudo pasang surut bergerak keluar teluk. Persebaran gelombang amplitudo pasang surut memiliki nilai yang relatif sama di setiap bagian teluk sehingga aktifitas pelabuhan tidak terganggu oleh gelombang amplitudo pasang yang tinggi

Pengaruh Efikasi Diri, Pemanfaatan Gaya Belajar dan Lingkungan Teman Sebaya terhadap Prestasi Belajar Akuntansi (Studi Kasus di Smk Negeri 1 Surakarta)

The objectives of this research are to investigate: (1) the significant effect of self-efficacy on the learning achievement in Accounting of the student of Accounting Expertise Competency of State Vocational High School 1 of Surakarta in Academic Year/2014; (2) the significant effect of learning style utilization on the learning achievement in Accounting of the student of Accounting Expertise Competency of State Vocational High School 1 of Surakarta in Academic Year/2014; (3) the significant effect of peer environment on the learning achievement in Accounting of the student of Accounting Expertise Competency of State Vocational High School 1 of Surakarta in Academic Year/2014; and (4) the simultaneous effect of self-efficacy, leaning style utilization and peer environment on the learning achievement in Accounting of the student of Accounting Expertise Competency of State Vocational High School 1 of Surakarta in Academic Year/2014. This research used the descriptive quantitative causal comparative research method with the ex-post facto design. Its population was all of the students of Accounting Expertise Competency of State Vocational High School 1 of Surakarta. The samples of the research were taken by using the propotional stratified random sampling technique, and they consisted of 120 students. The data of the research were gathered through questionnaire and documentation. They were analyzed by using the descriptive and inferential statistics methods, namely: simple linear regression and multiple linear regression. The results of the research are as follows: (1) there is a significant effect of self-efficacy on the learning achievement in Accounting of the student of Accounting Expertise Competency of State Vocational High School 1 of Surakarta in Academic Year/2014; (2) there is a significant effect of learning style utilization on the learning achievement in Accounting of the student of Accounting Expertise Competency of State Vocational High School 1 of Surakarta in Academic Year/2014; (3) there is a significant effect of peer environment on the learning achievement in Accounting of the student of Accounting Expertise Competency of State Vocational High School 1 of Surakarta in Academic Year/2014; and (4) there is a simultaneous effect of self-efficacy, leaning style utilization and peer environment on the learning achievement in Accounting of the student of Accounting Expertise Competency of State Vocational High School 1 of Surakarta in Academic Year/2014

Representasi Pembisuan Wanita Di Dalam Rubrik Olahraga “Spirit” Pada Harian Umum Suara Merdeka

Surat kabar merupakan salah satu media massa yang mempunyai kemampuan untuk menyampaikan pesan kepada masyarakat luas. Artikel berita yang terdapat dalam surat kabar dapat menghasilkan representasi mengenai realitas yang sengaja di konstruksi-kan sesuai dengan kode-kode dan ideology yang dianut surat kabar tersebut. Rubrik olahraga “Spirit” pada harian umum Suara Merdeka adalah sebuah rubrik yang menggambarkan posisi wanita dalam hubungannya dengan dunia olahraga yang cenderung maskulin.Penelitian ini bertujuan untuk melihat bagaimana pembisuan wanita ter representasikan dari hal-hal yang terungkap dan terdapat dalam teks berita yang ditampilkan. Teori yang digunakan dalam penelitian ini adalah Teori Muted group yang dirintis oleh Antropolog Edwin dan Shirley Ardener dan teori representasi dari Stuart Hall. Peneliti menggunakan pendekatan kualitatif dengan menggunakan analisis semiotika Rolland Barthes untuk meneliti kode-kode yang nampak dalam teks berita.Hasil penelitian ini menunjukkan bahwa wanita dalam dunia olahraga hanya menarik khalayak dari segi fisiknya saja, wanita adalah Secondary Sex, dan budaya patriarki menjadi langgeng dengan stereotipe yang dikemukakan oleh media massa. Kesemua hasil penelitian yang ada dengan jelas telah merepresentasikan pembisuan yang ada dalam diri seorang wanita yang menjadi objek berita. Hal tersebut dapat dilihat dari ke-tujuh berita yang menjadi fokus penelitian. Saran dari penelitian yang dilakukan ini adalah arti penting dari jurnalisme media yang berprespektif gender