67 research outputs found
Association rules and regression linear model of the groundwater population by the evaluation of uranium
Full text linkThe uranium available more on groundwater samples of certain types on the total alkalinity were relatively the same. But, the content of the uranium was higher in the samples. The multiple linear regression for pH as a dependent variable showed that the pH negatively correlated to the uranium, but the uranium was not significant for the linear regression model. The data of groundwater population from the samples of 127 with 12 variables of measurement of the Energy Department of the United States of America resulted in those association rules and linear regression models. The data has five factors of Producing horizon namely Ogallala Formation (TPO), Dockum Formation (TRD), Quartermaster Group (POQ), Whitehorse and Cloud Chief Group (PGWC), El Reno Group and Blaine Formation (PGEB). The step-wise linear regression for each of the five producing horizon codes was fitted to the data. Then, the regression models for each variable of producing horizon were obtained if pH was the dependent variable. If the Uranium was a dependent variable, then the regression models obtained were four only, with the model for PGEB was not able to be made. When pH as a dependent variable, it was depended upon Boron, Total alkalinity, and Bicarbonate
A simulation study on competing risks with censored data using cox model
Full text linkA simulation study was performed to compare two regression methods
for competing risks with censored data. The first method was the conventional
Cox's proportional hazard regression model (Cox model). The second method
was based on Cox model using a duplicated data technique of Lunn and McNeil
(or the modified Lunn-McNeil). Samples with various sizes and censoring
percentages were generated and fitted using both methods. This study was
conducted by comparing the inference of both methods, using Root Mean
Square Error (RMSE), the power tests, and the Schoenfeld residuals analysis.
The power tests used in this study were likelihood ratio test, Rao-score test, and
Wald statistics. The Schoenfeld residuals analysis was conducted to check the
proportionality of the model through its covariates. The estimated parameters
were computed for cause-specific hazards. Results showed the RMSE were generally smaller for the model of the modified Lunn-McNeil method than that
of the ordinary Cox method. The power tests of the likelihood ratio statistics
and Rao-score test were only powerful for the unstratified Cox model, so that, it
could be concluded that the model had more advantages than the modified
Lunn-McNeil one. However, results from the analysis of Schoenfeld residuals
indicated that the modified Lunn-McNeil was better than the ordinary Cox in
complying with the proportional hazards model assumption with respect to
certain covariates
Application of data mining techniques for economic evaluation of air pollution impact and control
Full text linkIn this research we examine aspects of the interdependence between economic development and the use of environmental and natural resources assets from global data published by United Nations. For that purpose, we use data mining techniques.
Data mining techniques applied in this thesis were: 1) Group method of data handling (GMDH), originally from engineering, introducing principles of evolution - inheritance, mutation and selection - for generating a network structure systematically to develop the automatic model, synthesis, and its validation; 2) The weighted least square (WLS) and step wise regression were also applied for some cases; 3) The classification-based association rules were applied. Data sets for this research consist of two sets integration data of air quality data and macroeconomic data of the cross-country data of World Development Indicator 2003 (WDI 2003), and from www.nationmaster.com. The results from www.nationmaster.com were as follows: the corruption index was strongly related to the urban SO2 concentration. The corruption index along with NOx emission has big contribution to the debt. Debt is the debt of the home country to the foreign country or external debt or foreign debt.
The result from WDI 2003 shows that the mortality rate of children under five years old depended on sanitation and water facilities obtained from GMDH results. However, the results from stepwise regression shows that mortality rate was dependent on annual deforestation, particulate matter, nationally protected area, but the big contribution was from annual deforestation.
Based on GMDH, new Gross National Income (GNI) formula was found. Previously GNI was known as Gross National Product (GNP). It was different from the common formula of GNP. The formula or equation model of urban SO2 concentration was also found through the GMDH algorithms. The results were then compared to WLS and Stepwise regression.
The debt was found by GMDH to be dependent on the corruption index as well as urban SO2 concentration. Corruption index along with NOx emission were related to debt. Results from weighted least square using SAS software showed that the corruption index was significant to the concentration of urban SO2.
Results from classification rules of the WDI 2003 data showed that the more energy imports net from foreign country was associated with the smaller in adjusted net saving in home country. Energy imports net were calculated as energy use in oil equivalents. This indicated that if the energy imports net was higher, then the adjusted net saving was small, and then CO2 emissions was small also. Thus, to reduce global warming in home country, a country can import energy from foreign country. According to the result from association rules on nationamaster.com data there were indication that corruption index was related with higher urban SO2 concentration, and inflation.
Results from association rules of item sets shows that the urban SO2 always follows the direction of corruption index. In addition, if any country wants to reduce the urban SO2 concentration, more works can be conducted on controlling corruption index than controlling SO2 emission per populated area
Association Rules of Prognostic Variables for Survival in A Randomized Comparison of Treatments for Prostatic Cancer
No full textIn this paper, the data was analyzed by data mining techniques of association rules. The data for 506 patients consist of an identification number, stage of tumour, a code for the treatment to which the patient was assigned, the date of randomization, the total months of follow-up since randomization, an indicator for the survival status or cause of death, and the values of twelve pretreatment covariates. The goal of an analysis should be to compare the treatments with respect to survival of the patients. Since this was a randomized study it would ordinarily not be necessary to adjust for the values of the pretreatment covariates. However, in such studies it is advisable to examine the prognostic significance of the covariates and to confirm that they are balanced across treatment groups. In addition, the analyst should look for important treatment-covariates interactions which might lead to the definition of subsets of patients in which treatment differences were significantly more marked or even reversed
Pengaruh Sistem Pengukuran Kinerja Strategis, Job Relevant Information, Dan Kejelasan Peran Terhadap Kinerja Manajerial Perguruan Tinggi Swasta Di Bandar Lampung
No full textHigher education is one of the educational institutions that are the main means in educating the nation. At this time many universities are established, managed, and developed by the government (state) or private. The main role of universities is to explore by conducting research and transmit knowledge by means of education. Managerial performance is a result of managerial activities that begin with planning, implementing, monitoring business, accountability reports, coaching, and monitoring. Managerial performance can be used to assess the processes and activities of managers in carrying out management functions which are calculated using indicators of planning, investigating, coordinating, evaluating, representing, negotiating, staffing, and supervising.The research design used in this research is explanatory research with a quantitative approach presented with numbers and analysis using statistics. Conducted from December 2021 to July 2022 on 7 private universities in Bandar Lampung where data collection using a questionnaire was then analyzed and presented in the form of a characteristic distribution table.From the results of research conducted by the author that the Strategic Performance Measurement System has a positive influence (O = 0.353) with the performance construct. the value of t – statistic in this construct relationship is 2.103 > 1.96, and the value of p – value is 0.031 1.96, and the value of p – value is 0.027 1.96, and the value of p – value is 0.025 < 0.05.Thus, it can be concluded that the influence of the strategic performance measurement system, job relevant information, and role clarity simultaneously have a significant effect on managerial performance. This shows that each variable is in accordance with what is expected so that managerial performance increases
MODEL LOYALITAS PELANGGAN: SUATU EXPLORASI MEMBANGUN DETERMINASI SISTEM PENGUKURAN KINERJA STRATEGIS (KAJIAN EMPRIS UMKM DI BANDAR LAMPUNG)
No full textPeran Usaha Mikro Kecil dan Menengah (UMKM) sangat besar untuk pertumbuhan perekonomian Indonesia,. UMKM memiliki kontribusi terhadap penyerapan tenaga kerja. Selama pandemi, kita melihat banyak UMKM terpuruk, tapi begitu kita melihat saat ini UMKM yang tadinya terpuruk sudah kembali beroperasi normal. Salah satu cara berbisnis adalah mendirikan suatu bentuk usaha.Usaha Kuliner dipilih karena dilihat bahwa pada masa pademi usaha ini tetap dapat dijalankan walau dengan metode yang tidak biasa, masa pandemic memaksa pelku usaha dan konsumen untuk beralih ke era digital selain itu para pelaku bisnis kuliner harus menciptakan inovasi baru dan menciptakan strategi pemasaran yang dapat membuat usaha kuliner yang dibangun memiliki ciri khas yang menjadi keunggulan dalam bersaing dengan para kompetitor.Berdasarkan fenomena tersebut penulis tertarik untuk mengkaji “Model Loyalitas Pelanggan: Suatu Explorasi Membangun Determinasi Sistem Pengukuran Kinerja Strategis (Kajian Empiris UMKM Di Bandar Lampung khususnya wilayah kecamatan Kemiling, Pahoman dan Wayhalim)”Berdasarkan hasil uji validitas terhadap 60 responden atas instrumen pernyataan yang digunakan untuk masing-masing variabel. Tabel 4.1 diatas memperlihatkan bahwa seluruh item pernyataan memiliki nilai koefisien korelasi positif dan lebih besar daripada r tabel, r hitung > r tabel. Hal ini berarti bahwa data yang diperoleh secara keseluruhan valid dan dapat dilakukan pengujian data lebih lanjut.Berdasarkan data pada tabel 4.2 yang meliputi Kualitas Layanan, Sisim Kinerja Stategis dan Loyalitas Pelanggan, masing- masing memiliki nilai Cronbach’ Alpha 0.727, 0,736 dan 0,614. Semua instrumen dinyatakan reliabel karena memiliki nilai Cronbach’ Alpha lebih 0,60.Dari penelitian yg dihasilkan sehingga dapat disimpulkan bahwa terdapat pengaruh Kualitas layanan berpengaruh terhadap Loyalitas Pelanggan, terdapat pengaruh Sistim kinerja Strategis terhadap Loyalitas Pelanggandan terdapat pengaruh secara simultan. Dapat disimpulkan bahwa terdapat pengaruh Kualitas Layanan dan Sistim kinerja Strategis terhadap Loyalitas Pelanggan
Factors Affecting Internal Auditor Performance
Full text linkThis study aims to determine the impact of control position, self-efficacy, role conflict, and time-budget pressure on auditor performance in BPKP's Lampung provincial representative office. This research is a quantitative research and has the nature of raw data. The data collection technique used in this study was the distribution of questionnaires. The population in this study included auditors working in the BPKP's Lampung provincial office, up to 75 auditors. The sample of this study is determined by census method or saturation sampling method, that is, all members of the population are used as samples. The data analysis method of this study used SPSS version 26 program for multiple linear regression analysis. performance at the same time. Partially, the variables of inspection location, self-efficacy, and time-budget pressure had a significant effect on auditor performance, while the variable role conflict had no effect on auditor performance in the BPKP representatif office in Lampung Province
PEMBERDAYAAN DAN PEMANFAATAN EKONOMI DIGITAL DALAM MENINGKATKAN KINERJA PEGAWAI DINAS KOPERASI UKM, PERINDUSTRIAN DAN PERDAGANGAN KABUPATEN LAMPUNG BARAT
No full textKegiatan pengabdian ini bertujuan untuk memberikan pengetahuan mengenai pemberdayaan dan pemanfaatan ekonomi digital dalam meningkatkan kinerja pegawai dinas koperasi ukm, perindustrian dan perdagangan kabupaten Lampung Barat. Kegiatan ini dilaksanakan di Kantor Dinas Koperasi setempat dengan diikuti oleh para pegawainya sebagai sasaran kegiatan. Bentuk kegiatan dalam pengabdian ini adalah sosialisasi menggunakan metode ceramah (presentasi) dengan cara menyampaikan materi kepada peserta dan dilanjutkan dengan sesi diskusi (sesi tanya jawab). Kegiatan ini dilaksanakan pada 07 Januari 2022 pukul 09.00 s/d 11.30 WIB dengan jumlah peserta sebanyak 15 orang. Capaian dari kegiatan sosialisai ini adalah terlaksananya kegiatan dengan lancar dan memperoleh respon positif dari para peserta
Analisis Pengaruh Informasi Arus Kas Terhadap Peningkatan Laba (Studi Kasus Pada Perusahaan Manufaktur Di Bursa Efek Indonesia)
Full text linkConsolidated cash flow is a useful reports for managers, investors, creditors and other userswhere the report can give a company's cash flows in accordance with the classification of activities.Consolidated cash flow needs to be analyzed to assess the ability of companies to generate cash so thattrust creditors, investors and other business partners can still be maintained by the company.Companies with excess cash flow will have better performance than other firms because they can takeadvantage of various opportunities that may not be acquired by other companies. The objective ofresearch in writing this essay is to determine whether there is influence between cash flow informationthat consists of operating cash flow, cash flow investing and financing cash flow to increase in profitsaround the date of publication of financial statements. Samples were manufacturing companies with atotal sample of 34 companies. The analytical tool used was multiple linear regression analysis .Theresults of this study showed that based on hypothesis testing simultaneously Fcount = 65.213> Ftable(2.92) and the p-value (0.000) from ttable and the p-value was (0.05).Keywords: Cash Flow Information, Earning
Pengaruh Sikap, Pelayanan, Kesadaran Wajib Pajak Dan Pengetahuan Perpajakan Terhadap Kepatuhan Wajib Pajak Dalam Membayar Pajak Bumi Dan Bangunan
Full text linkIncome taxes are one state revenues significantly affect development in Indonesia.Taxes are one source of financing development in order to improve society. There aredifferent types of taxes to the community however, from some of which tax on land andbuilding is a type of tax and strategic potential as a source of state revenue in order to financethe implementation of government and development. This study aims to determine the effectof attitudes, Services, Awareness and Knowledge of Taxation Taxpayer Against TaxpayerCompliance In Pay Tax And Building. The analytical method used in this research is multiplelinear regression analysis using SPSS Version 20. The population in this study is a mandatoryproperty tax registered at the district office Bangko Merangin regency, Jambi. The number ofcompulsory tax on land and buildings by 5117 taxpayers in 2015. The sample in this studywere 100 respondents with incidental Sampling methods. The findings in this study indicatethat the attitude of the taxpayer, the taxpayer awareness and knowledge of taxation have asignificant impact on tax compliance in paying property taxes as well as tax service factors donot significantly influence taxpayer compliance in paying property taxes
- …
