Lidya Martha’s scientific contributions

This study aims to examine the effect of profitability on Stock Prices in companies listed on the Indonesia Stock Exchange. The research population of companies on the Indonesia Stock Exchange in 2018-2022. The sample was selected using a purposive sampling method and a total of 45 companies were obtained. The type of data used is quantitative data and the data source is secondary data obtained from the official website of the Indonesia Stock Exchange, namely www.idx.co.id. The research data was analyzed using the panel data regression method, namely a combination of data from the time series and cross sections through Eviews 12 data processing. The cause of changes in share prices is wrong the other is influenced by internal factors, namely the profitability ratio. In the profitability ratio there are variables Return On Asset, Return On Equity, Return On Investment, Net Profit Margin, and Gross Profit Margin. The research result Return On Asset had a negative and significant effect on stock prices, Return On Equity, Return On Investment, and Gross Profit Margin had a positive and significant effect on stock prices, Net Profit Margin had a negatif and not significant effect on stock prices.

This research aims to examine the influence of product quality and product design on purchasing decisions for Wardah products at Ela Cosmetics Padang. This type of research is quantitative, where this research uses numerical data and the research process emphasizes objective measurement of results using statistical analysis. The population in this study were consumers using Wardah products during the last 6 months, namely 660 consumers. The sampling technique used was random sampling. The number of samples was 70 people obtained using the Isaac and Michael formula. The type of data used in this research is quantitative and qualitative data. Meanwhile, the data sources are primary and secondary data sources. The data analysis technique uses multiple linear regression using the SPSS version 21.00 program. The hypothesis was tested using the t test at α = 0.05. The results of this research show that product quality and product design have a positive and significant effect on purchasing decisions for Wardah products at Ela Cosmetics Padang.

This research aims to examine the influence of intellectual capital and capital structure on company value in the industrial sector listed on the idx 2018-2022. This type of research is quantitative. The population in this study wa 61 industrial companies. The sample in this study was 20 companies. The data source in this research is secondary data. The data collection technique uses documentation thecniqueswith the helpof the eviewa 8 program. The hypotesis is tested using the t test at α =0.05. The reseults of this research show that intellectual capital has a positive effect on company value and capital structure has a negative effect on company value in the industrial sector lidted on the BEI 2018-2022 period.

This study aims to determine the effect of work discipline, position transfer and work environment on employee performance at the Regional Secretariat of Padang Pariaman Regency. The sample in this study amounted to 146 employees or respondents. Research data were collected from respondents' results and analyzed by multiple linear regression and hypothesis testing. The results of this study indicate that work discipline has a positive effect and job transfer has a positive effect and the work environment has a positive and significant effect on employee performance. It can be seen that the significant value of work discipline, job transfer and work environment on employee performance is a value of 0.000 <0.05 and a t-count of 4.999 from a t-table of 1.97681

This study aims to examine the effect of investment decisions and leverage on the value of companies listed on the Indonesia Stock Exchange. The research population is all companies listed on the IDX for the 2017-2021 period. The sample was selected using the purposive sampling method with the sample criteria being companies listed on the IDX in the 2017-2021 period, which compared company values in the 2017-2021 period, and a sample of 57 companies was obtained. The data source is the company's annual financial report taken through the official website of the Indonesia Stock Exchange (www.idx.co.id). The testers used panel data regression analysis with the Eviews tool. Investment decisions are measured using the price earning ratio, while leverage is measured using the Debt to asset ratio and debt to equity ratio and company value is measured by price to book value. The results showed that the investment decision variable had a positive and significant effect on firm value, while leverage had a positive and significant effect on firm value.

Study this aim for test the influence of funding decisions and Corporate Social Responsibility on value companies listed on the Indonesia Stock Exchange . Population study is whole companies listed on the IDX for the 2017-2021 period . Sample chosen use purposive sampling method with criteria sample is companies listed on the IDX in period 2017-2021. Company that owns report financial complete in period 2017-2021, which distributes decision funding in period 2017-2021 and obtained sample 45 companies . Data source is report financial annual taken company _ through the official website of the Indonesia Stock Exchange ( www.idx.co.id ). Testing use analysis panel data regression with tool help Eviews . funding decision be measured with using DER (Debt to Equity Ratio), meanwhile Corporate Social Responsibility be measured with (CSR) as well as Company value is measured with PBV (Price to Book Value). Research results show that funding decision variable influential positive and significant on firm value, meanwhile Corporate Social Responsibility influential negative and no significant to Company Value .

Penelitian ini bertujuan untuk menganalisis pengaruh lingkungan kerja fisik, lingkungan kerja non fisik terhadap kepuasan kerja karyawan di Badan Penelitian dan Pengembangan Provinsi Sumatera Barat. Data yang digunakan dalam penelitian ini dikumpulkan dari karyawan yang bekerja di Badan Penelitian dan Pengembangan Provinsi Sumatera Barat. Dengan metode total sampling dalam memilih sampel. Ada 30 karyawan yang bekerja di badan penelitian dan pengembangan untuk provinsi Sumatera Barat. Pengolahan data menggunakan metode regresi linier berganda. Hasil penelitian menunjukkan bahwa lingkungan kerja fisik tidak berpengaruh signifikan terhadap kepuasan kerja dengan nilai t hitung yang lebih kecil dari t tabel yaitu 0,293 > 0,3610, namun nilai signifikan lebih besar dari 0,05 yaitu 0,159 > 0,05. Sedangkan lingkungan kerja non fisik berpengaruh positif dan signifikan terhadap kepuasan kerja dengan nilai t hitung lebih besar dari t tabel yaitu 3,957 > 0,3610 dan nilai signifikan kurang dari 0,05 yaitu 0,000<0,05

This study aims to examine the effect of Earning Per Share and Dividend Per Share on Stock Prices in companies listed on the Indonesia Stock Exchange. The research population of companies on the Indonesia Stock Exchange in 2017-2021. The sample was selected using a purposive sampling method and a total of 39 companies were obtained. The type of data used is quantitative data and the data source is secondary data obtained from the official website of the Indonesia Stock Exchange, namely www.idx.co.id. The research data was analyzed using the panel data regression method, namely a combination of data from the time series and cross sections through Eviews 12 data processing. The results showed that the variables Earning Per Share and Dividend Per Share had a positive and significant effect on stock prices.

This study aims to examine the facilities, locations, and tourist attractions on the intention to return to the tourist object of Carocok Painan Beach. This research is a quantitative study, the sampling method uses incidental sampling techniques with a total of 100 respondents. The data analysis technique used is validity test, reliability test, normality test, multicollinearity test, heteroskeasticity, multiple regression analysis and t test. The results showed that facilities had a negative and not significant effect on intention to return, location had a positive and significant effect on intention to return, and tourist attraction had a positive and significant effect on intention to return.

The purpose of this study was to examine the effect of work environment discipline variables on employee performance at PT. Sumatra Jaya Agro Lestari Silaut, District of Lunang Silaut, Pesisir Selatan Regency. Collecting data by distributing questionnaires to 63 respondents using a saturated sampling technique, where all members of the population are sampled, using multiple linear regression testing with the help of the SPSS application. The results of the study show that work discipline has a positive and significant effect on employee performance, the work environment has a positive and significant effect on employee performance