Identifying cyclic and (1 + 2v)-constacyclic codes over Z₄[v]/ <v³ – 1> with Z₄-linear codes

This paper studies cyclic and (1 + 2v)-constacyclic codes over the ring Z₄[v]/. By introducing three different Gray maps, we show that the Gray images of cyclic codes are quasi-cyclic codes over Z₄ and that of (1 + 2v)-constacyclic codes are cyclic, quasi-cyclic and permutation equivalent to quasi-cyclic codes over Z₄. Moreover, we show that the Gray image of skew (1 + 2v)-constacyclic code is a quasi-cyclic code over Z₄.Publisher's Versio

Implikasi Manajemen: Keputusan Pembelian Kembali pada rantai pasok Ritel Teknologi dalam Ritel Industri di Ritel Digital XYZ

Abstrak Perusahaan retail digital berkompetisi untuk mendapatkan partner. Sebahagian besar pelaku retail digital bermodel bisnis startup yang memiliki tantangan pendanaan. Penelitian ini bertujuan untuk mengetahui bagaimana perusahaan retail digital mempertahankan pelanggannya dengan cara keaktifan partner yang teregistrasi tetap melakukan pembelian kembali. Memahami persepsi positif partner adalah kunci dalam meningkatkan keputusan pembelian kembali. Strategi Marketing, Service Quality dan faktor situasional dipelajari untuk memahami penguatan persepsi positif tersebut. Attitude Towards Norm dikenal sebagai salah satu prediktor dalam mempengaruhi keputusan pembelian sehingga hubungan antar variabel tersebut juga dipelajari dalam penelitian ini. Metode penelitian ini adalah kuantitatif. Data diperoleh dari kuisioner online sejumlah 384 responden. Analisis deskriptif dilakukan untuk mengetahui latar belakang demografi responden. Analisis asosiatif dilakukan untuk mengidentifikasi hubungan antara Marketing Activities, Service Quality, Attitude Towards Norm, Social Influene dengan Repurchasing Decision. Hasil menunjukkan semua pengaruh variabel eksogen ditemukan signifikan, kecuali secara langsung Service Quality tidak memiliki pengaruh signifikan terhadap Repurchase Decision. Hasil MGA menunjukkan bahwa wanita yang berusia di atas 40 tahun lebih banyak dipengaruhi dalam Social Influence terhadap Repurchase Decision. Perusahaan dapat memiliki program marketing berupa iklan dan promo untuk menguatkan physical evidence. Literasi bisnis dan keuangan memanfaatkan media sosial untuk memperluas informasi. Pemanfaatan influencer atau online event yang ditujukan kepada sekelompok ibu rumah tangga mengenai keuntungan retail digital berupa pengoperasian warung yang efisien dan efektif. Perusahaan juga dapat menggunakan Account Executive sebagai keunggulan kompetitif dalam hal Service Quality yang bertugas untuk mempertahankan partner secara personal, melakukan penyebaran informasi secara offline sebagai engagement antara perusahaan dan partner

Analisis Kinematis Lengan Excavator Keihatsu 921 C

Tujuan penulisan tugas akhir ini adalah analisis kinematis pada excavator, yaitu pada excavator produk keihatsu 921 C. Analisis kinematis dimaksud untuk mengetahui posisi dan kecepatan pada setiap link pada posisi tertentu. analisis kinematis yang dilakukan adalah pada perhitungan posisi dan kecepatan sesaat boom, arm dan backet. Analisi dilakukan sepanjang workspace area mekanisme lengan excavator berbagai titik pada mekanisme lengan excavator pada satu arah putaran. Analisis yang dilakukan adalah pada gerak umum dua dimensi yang dimiliki oleh mekanisme lengan excavator. Hasil analisis kinematis didapatkan hasil bahwa analisis kinematis diberbagai posisi dari silinder boom memendek secara maksimal sampai memanjang secara maksimal pada workspacearea didapatkan kecepatan sudut boom terendah dicapai pada saat silinder boom pada posisi sudut θ1 = 42,75o dan kecepatan tertinggi sudut boom dicapai pada saat silinder boom pada posisi θ1 = 137,75o. Dan pada arm didapatkan kecepatan sudut arm terendah dicapai pada saat silinder arm pada posisi sudut θ3 = 70o dan kecepatan tertinggi sudut arm dicapai pada saat silinder arm pada posisi θ3 = 140o. Dan untuk bucket didapatkan kecepatan sudut bucket terendah dicapai pada saat silinder Bucket pada posisi sudut θ5 = 30o dan kecepatan tertinggi sudut bucket dicapai pada saat silinder bucket pada posisi θ5 = 130o

PENINGKATAN KEMAMPUAN MEMAHAMI SUBTEMA AIR DAN UDARA DENGAN MODEL PEMBELAJARAN KOOPERATIF TIPE STAD PADA ANAK KELOMPOK B DI TK DHARMA WANITA VI BATURAN COLOMADU TAHUN AJARAN 2013/2014

ABSTRAK: Tujuan penelitian ini adalah untuk meningkatkan kemampuan memahami subtema air dan udara melalui penerapan model pembelajaran kooperatif tipe Student Team Achievement Division (STAD) pada anak kelompok B di TK Dharma Wanita VI Baturan Colomadu Karanganyar Tahun Ajaran 2013/2014. Penelitian ini merupakan penelitian tindakan kelas (PTK). Penelitian ini dilaksanakan dalam dua siklus, dengan tiap siklus terdiri dari empat tahap, yaitu perencanaan, pelaksanaan tindakan, observasi, dan refleksi. Subjek penelitian adalah anak kelompok B TK Dharma Wanita VI Baturan Colomadu yang berjumlah 23 anak. Hasil penelitian menunjukkan bahwa adanya peningkatan kemampuan memahami subtema air dan udara dengan menggunakan model pembelajaran kooperatif tipe STAD dari prasiklus ke siklus I dan dari siklus I ke siklus II. Presentase ketuntasan pada prasiklus sebesar 30,43%. Pada siklus I meningkat menjadi 65,22%. Siklus II meningkat lagi menjadi 86,96%.Kata kunci: kemampuan memahami, air dan udara, model pembelajaran kooperatif tipe STADABSTRACT: The purpose of this research is to improve the ability to comprehend of water and air sub-theme through the implementation of STAD-cooperative model of children in group B TK Dharma Wanita VI Baturan Colomadu Karanganyar in the Academic Year 2013/2014. This research is classroom action research (PTK). This  research executed in two cycles, with each cycle consisted of four stages, namely planning, action, observation, and reflection. The Subjects of this research were children in group B TK Dharma Wanita VI Baturan Colomadu as many as 23 children. Results of this research showed that increasing in the ability to comprehend of water and air sub-theme by using STAD-cooperative learning model of prasiklus to the cycle I and from cycle I to cycle II. Percentage of completeness on prasiklus 30.43%. In the first cycle increased to 65.22%. Cycle II increased to 86.96%. Keywords: ability to comprehend, water and air, STAD-cooperative learning mode

PENGARUH MODEL PEMBELAJARAN TWO STAY TWO STRAY DAN MOTIVASI BELAJAR TERHADAP KEMAMPUAN MEMAHAMI KONSEP IPA

Abstract: This research aims to know: (1) the difference of ability to understand science concept between students who were taught by Two Stay Two Stray model and students who were taught by Student Teams Achievement Division model, (2) the difference of ability to understand science concept between students who had high learning motivation and students who had low learning motivation; (3) interaction between learning model and learning motivation toward the ability to understand science concept.This research includes a quantitative experimental study with 2x2 factorial designs. The population was the fifth grade elementary school in Wonogiri subdistrict. The sample of this research were SD Negeri 1 Wonoboyo and SD Negeri 2 Wonoboyo. The collected data analyzed by using Analysis of Variance Two-Way with different cells. The result of this research were: (1) there was the difference of ability to understand science concept between students who were taught by Two Stay Two Stray model and students who were taught by Student Teams Achievement Division model, (2) there was the difference of ability to understand science concept between students who had high learning motivation and students who had low learning motivation, (3) interaction between learning model and learning motivation toward the ability to understand the science concept. Abstrak: Penelitian ini bertujuan untuk mengetahui: (1) perbedaan kemampuan memahami konsep IPA antara siswa yang diajar dengan model pembelajaran Two Stay Two Stray (TSTS) dan siswa yang diajar dengan model pembelajaran Student Teams Achievement Division (STAD), (2) perbedaan kemampuan memahami konsep IPA antara siswa yang memiliki motivasi belajar tinggi dan siswa yang memiliki motivasi belajar rendah, (3) interaksi antara model pembelajaran dan motivasi belajar terhadap kemampuan memahami konsep IPA. Penelitian ini termasuk penelitian kuantitatif eksperimental dengan desain penelitian 2x2 faktorial. Populasi dalam penelitian ini meliputi siswa kelas V SD Negeri di Kecamatan Wonogiri. Sampel dalam penelitian ini adalah SD Negeri 1 Wonoboyo dan SD Negeri 2 Wonoboyo. Teknik analisis data yang digunakan adalah Analisis Variansi Dua Jalan dengan Sel Tak Sama. Hasil penelitian ini adalah: (1) ada perbedaan kemampuan memahami konsep IPA antara siswa yang diajar dengan model pembelajaran Two Stay Two Stray (TSTS) dan siswa yang diajar dengan model pembelajaran Student Teams Achievement Division (STAD), (2) ada perbedaan kemampuan memahami konsep IPA antara siswa yang memiliki motivasi belajar tinggi dan siswa yang memiliki motivasi belajar rendah, (3) ada interaksi antara model pembelajaran dan motivasi belajar terhadap kemampuan memahami konsep IPA. Kata kunci: Two Stay Two Stray, Student Teams Achievement Division, motivasi belajar, kemampuan memahami, konsep IPA

Analisis Postur Kerja Menggunakan Metode Posture Ergonomic Risk Assessment (PERA) Untuk Meminimalisir MSDs (Studi Kasus : UKM Robin Gitar Sukoharjo)

The process of making acoustic guitar products in Sukoharjo has 4 work stations and 17 work activities. During the production process there is a risk of musculoskeletal disorders (MSDs) because the work is done for 8 hours in a sitting position with the body bent, squatting, and doing repetitive or repetitive movements, especially the upper body such as the neck, shoulders, back, arms, and wrists. . The purpose of this study was to identify and analyze posture conditions using the Nordic Body Map (NBM) and Posture Ergonomic Risk Assessment (PERA) methods. The NBM method includes complaints of pain in all parts of the worker's body. The PERA method is used to determine muscle fatigue that occurs in each part of the worker's body by determining work posture, work duration, and work movement frequency. The results of the study using the NBM method were carried out on all workers, there were 2 high-risk workers, 3 medium-risk workers, and 7 low-risk workers. Efforts to minimize the risk of MSDs were redesigned using SolidWork and CATIA applications. The results of the study using the PERA method showed that there were 5 very high and high priority workers on the neck, back, shoulders, right arm, wrist and leg. The improvement proposals given to reduce the level of risk felt by workers are improving work facilities, OHS training and doing regular muscle stretching and exercise

Pengembangan Waduk Cengklik Sebagai Kawasan Ekowisata Di Boyolali

Boyolali is a city in Central Java with a population density of 930,531 people / km with a land area of 1,015,101 km2. Boyolali has a diverse and more tourism potential compared to other cities in Central Java, one of which is the Cengklik Reservoir located in Ngargorejo and Sobokerto Villages, Ngemplak District, Boyolali. The selection of Cengklik Reservoir as a final project is due to the lack of progress that has increased significantly even though the natural potential that can be managed and maintained properly will run optimally. This development project is expected to be a benchmark for developing Cengklik Reservoir to be more developed, provide education for the community about efforts to preserve nature, increase economic income for local residents as jobs, attract tourists to be more interested in visiting the reservoir, and meet quality standards reservoir as an ecotourism area in Boyolali

Wonogiri Convention and Exhibition Center

Wonogiri Convention And Exhibition Center is a building that becomes a center for organizing activities to discuss common needs carried out by many people relating to conferences, meetings and exhibitions in Kabupaten Wonogiri which emphasize the Neo-Vernacular Architecture approach with a more advanced contemporary design, varied, flexible, and innovative. The success of Surakarta city is one of the cities of MICE which is expected to be spread to the surrounding areas, especially Kabupaten Wonogiri. Organizing conventions and exhibitions is expected to be a dynamic for industry and economic development. However, in Wonogiri district itself there are no facilities that are able to accommodate convention and exhibition activities comfortably. The potential of Kabupaten Wonogiri for the future prospects of the Wonogiri Convention And Exhibition Center is expected to be able to overcome the obstacles that exist for the development and progress of Kabupaten Wonogiri

Interactions among genes in the ErbB-Neuregulin signalling network are associated with increased susceptibility to schizophrenia

<p>Abstract</p> <p>Background</p> <p>Evidence of genetic association between the NRG1 (Neuregulin-1) gene and schizophrenia is now well-documented. Furthermore, several recent reports suggest association between schizophrenia and single-nucleotide polymorphisms (SNPs) in ERBB4, one of the receptors for Neuregulin-1. In this study, we have extended the previously published associations by investigating the involvement of all eight genes from the ERBB and NRG families for association with schizophrenia.</p> <p>Methods</p> <p>Eight genes from the ERBB and NRG families were tested for association to schizophrenia using a collection of 396 cases and 1,342 blood bank controls ascertained from Aberdeen, UK. A total of 365 SNPs were tested. Association testing of both alleles and genotypes was carried out using the fast Fisher's Exact Test (FET). To understand better the nature of the associations, all pairs of SNPs separated by ≥ 0.5 cM with at least nominal evidence of association (<it>P </it>< 0.10) were tested for evidence of pairwise interaction by logistic regression analysis.</p> <p>Results</p> <p>42 out of 365 tested SNPs in the eight genes from the ERBB and NRG gene families were significantly associated with schizophrenia (<it>P </it>< 0.05). Associated SNPs were located in ERBB4 and NRG1, confirming earlier reports. However, novel associations were also seen in NRG2, NRG3 and EGFR. In pairwise interaction tests, clear evidence of gene-gene interaction was detected for NRG1-NRG2, NRG1-NRG3 and EGFR-NRG2, and suggestive evidence was also seen for ERBB4-NRG1, ERBB4-NRG2, ERBB4-NRG3 and ERBB4-ERBB2. Evidence of intragenic interaction was seen for SNPs in ERBB4.</p> <p>Conclusion</p> <p>These new findings suggest that observed associations between NRG1 and schizophrenia may be mediated through functional interaction not just with ERBB4, but with other members of the NRG and ERBB families. There is evidence that genetic interaction among these loci may increase susceptibility to schizophrenia.</p