bluuebunny/crossref_metadata_2025 huggingface dataset:
The Effect of Bankâ€™s Performance on Return on Asset
Authors: Hutasoit, SE., MSi., MSE Posma Sariguna Johnson Kennedy , Agustina Doan Otanti
Published: June 2024

This study aims to determine the performance of banks in Indonesia and their return on assets (ROA), and to know the problems faced by a bank in connection with the banking performance. The data used in this research is secondary data. Data in the form of financial ratios processed by Research Bureau of the bank's financial statements as of December 2008-2014 that has been audited and published in the June issue of InfoBank 2015. The method used in this research is quantitative method. Classic assumption test used in this study include normality, multicollinearity, heteroskedatisitas, autocorrelation and regression models. The conclusion that can be drawn, ROA is affected by the six independent variable: CAR, NPL, LDR, ROA and NIM. Based on the regression equation shown that the variable CAR partially no effect on ROA. NIM variable is positive influenced, so it can be interpreted that the influence exerted by variables NIM to ROA is positive.Keywords : Return on Asset, Capital Adequacy Ratio, Net Interest Margin,Non Performing Loan, Loan to Deposit Ratio.
HUBUNGAN KEPEMIMPINAN, MOTIVASI KERJA TERHADAP KINERJA KARYAWAN
Authors: Pandapotan Frans David , Tampubolon Emma , Hutapea Ganda T
Published: June 2024

The purpose of this study was to determine the relationship work motivation and employee performance, relationship with the leadership performance of employees of PT. Sari Coffee Indonesia. This research was descriptive - correlation with a sample of 30 employees and the data were analyzed using the Spearman rank correlation analysis. The results of this study indicate that (1) Based on the results of Spearman correlation test above can be seen significant value of 0.000 <0.05, it can be concluded that there is a significant relationship between the variables of leadership performance, while the value of Spearman correlation between leadership and performance of 0.667 which is positive and signifies the strong relationship, it means there is a positive relationship that is if the leadership increases, the performance will increase, and vice versa. (2) Based on the results of Spearman correlation test above can be seen significant value of 0.000 <0.05, it can be concluded that there is a significant relationship between the variables of motivation to performance, while the value of Spearman correlation between motivation and performance of 0.714 which is positive and indicates a great relationship strong, it means there is a positive relationship that if the motivation increases, the performance will increase, and vice versa.Keyword leadership, work motivation and employee performance.
ANALISIS KEPUASAN KONSUMEN ATAS PELAYANAN HOTEL MEKARSARI INDAH CILEUNGSI
Authors: Siagian Julesron , Panjaitan Robert P , Hutapea Ganda T
Published: June 2024

The number of visitors has decreased in February to April 2016 and increased again in May 2016. The number of visitors nine in May 2016, in 2895 the number of visitors and the lowest occurred in April 2016, 2647 people. Total visitor Hotel Mekarsari Indah, Cullinan period January - May 2016 was 15 557 people. This study aims to determine the extent of consumer satisfaction level of importance and performance Mekarsari Indah Hotel, Cullinan and to find out what attributes the causes of customer satisfaction Hotel Mekarsari Indah, Cullinan. Source data used are primary data obtained through questionnaires to 100 respondents, ie customers who visited Hotel Mekarsari Indah, Cullinan while secondary data obtained through library research by reading marketing books and other data sources that are still associated with researchKeyword : Performance ,Customer satisfaction
PENCATATAN PERSEDIAAN DAN PENETAPAN HARGA POKOK PERSEDIAAN PADA PT PERHUTANI (PERSERO)
Authors: Sitorus Frangky Yosua , Siagian Yunus Meherlin , Malau Melinda
Published: June 2024

Trading companies play a major role in world economic activity. Entry and exit of goods, raises revenues and expenditures of money occurred. If you do not want to lose market share in the competitive trade, is the basis for an accountant to be ready and have the initiative in practice what is learned during bench formal. Theory education complex and in practice in the world of work more flexible and easier to apply. But a lot of difference between theory and practice that companies use a method that is more simple, effective and efficient. Findings are compared later writers get into new things that can be learned. When seeing things that do not fit with the theory learned, became something new to the author learned as stock in later day. Of making the report job training, the author makes a conclusion that can find companies in the register and in determining the cost of inventory to the hands consumer.Kata kunci: Aset, Persediaan, Pembelian, Penjualan
FAKTOR-FAKTOR YANG MEMPENGARUHI KUALITAS LABA PADA PERUSAHAAN INDUSTRI DASAR DAN KIMIA YANG TERDAFTAR
Authors: Septiyani Glory , Rasyid Elly , Tobing Emerald G.
Published: June 2024

The purpose of this study to determine the effect of capital structure, earnings growth, and the size of the company to the quality of earnings in the base and Chemical Industry Company listed on the Indonesian Stock Exchange (BEI) in the period 2012-2015. Quality measurement using the model Penman (2001) Quality of earnings. The results of this study indicate simultaneous testing with a significant level of 0.040 <0.05 states that the capital structure, earnings growth and company size affects the quality of earnings in the chemical and basic industry companies listed in the IDX. Partially, the capital structure and have a significant effect on the quality of earnings positive direction with a significant level of 0.049> 0.05 profit growth is not significant, but has a positive direction by showing the significant level of 0.193> 0.05 on earnings quality and size of the company does not effect significantly to the quality of earnings but showed a positive direction towards the quality of earnings with a significant level of 0.182> 0.05Keywords : Capital Structure, Earning growth, Size company, quality of income
PENERAPAN TOTAL QUALITY MANAGEMENT TERHADAP
Authors: Tira Natalia Tia , Sidharta Juaniva , Simanjuntak Ramot P.
Published: June 2024

The purpose of this study to determine the effect on the total quality management of the companyâ€™s financial performance in PT. LEBAHLESTARI PRIMA. Samples used in this study is 50 samples. Data used in this study are primary data in the form of a questionnaire and the companyâ€™s financial reporting period 2011 â€“ 2015. Impact analysis using multiple linear regression analysis. Analysis shows together their total quality management effect on the financial performance of the company, it is shown from the results of the data processed by a number of significant results of testing the hypothesis of the four variabels that influence total quality management is a significant focus on the customer and the value obtained training with a focus on customer training of 0,003 and 0,000. And that no effect is continuous improvement and employee empowerment with the values obtained by continuous improvement and employee empowerment 0,091 at 0,488. Company size used in this study is the return on assets (ROA), return on equity (ROE) and net profit margin (NPM).Keyword: Total quality management, financial performance, financial ratio.
THE EFFECT PROFITABILITY, FIRM SIZE AND LIQUIDITY
Authors: Putra Krisanta Sumardi , Tarigan Lukas , Panjaitan Robert
Published: June 2024

This research aimed to knowing the influence Profitability, Firm Size and liquidity of capital structure. The population in this research are all Manufacturing company cement industry sub-sector on LQ45 listed on the BEI from 2006 to 2015 period. This type of sampling in this research using purposive sampling technique. The data used in this research is secondary published data. The results showed that the Profitability has no effect on cement industry sub sector manufacture capital structure in 2006-2015, Firm size has effect on capital structure in the 2006-2015. Manufacturing company cement industry sub-sector, while Liquidity has no effect on cement industry sub sector manufacture capital structure in 2006-2015.Keywords: Manufacturing Companies cement industry sub-sector, Return on Equity, Debt To Equity, Firm size, liquidity.
THE INFLUENCE OF ASSET GROWTH, TOTAL DEBT TO ASSET AND RETURN
Authors: Kennedy Posma Sariguna Johnson , Pratama Bernadt Andri
Published: June 2024

This study aims to determine the extent of the effect of asset growth, total assets Debt and Return on investment against systematic risk (beta stocks) at a construction company in the Stock Exchange 2012-2016 period. The data used for this study quantitative data. The data used in the annual financial statements of the six companies the construction sector in Indonesia Stock Exchange during the five years, the data on monthly stock price that is processed by investigators into the share price per year. All data used in this research is secondary data obtained from www.idx.com and www.yahoofinance.co.id. This research method of data used in this study are all measured by using a ratio scale measurements showed that the absolute value of an object. The results of this study indicate that the value of the coefficient of determination (Adjusted R2) is approximately 0.428. This means that the variance beta stocks can be explained by the variance Asset growth, Debt to Total Assets, Return on investment can be explained beta stocks by 42.8%, while the remaining 57.2% is explained by other factors besides the variables studied. F count that variable Asset growth, debt to total assets and the return on investment influence simultaneously toward Beta Shares. Individual Asset ratios Return on investment growth and a positive effect on beta stocks while the ratio of debt to total assets negative effect on beta stocks and the only variable Asset growth and return on investment that are statistically significant.Keywords: :Asset Growth, Debt to Total Asset , Return On Invesment and Beta Stock.
The Influence of Profitabilities and Capital Structure to Company Performance
Authors: Louvisa Dina Esra , Tarigan Lukas , Sembiring Carolina F.
Published: June 2024

The influence of profitabilities and capital stucture to company performance. Research aims at explaning effect of profitability and capital stucture on company performance. Research also considers testing the effect of profitability and capital stucture simultaneously or partially on company performance. Study sample of 7 property and real estate companies listed on the Indonesia Stock Exchange. Observation made during the period of 7 years, the years 2009-2015. Data analysis techniques used in the study was conducted using miltiple regression analysis. Results of research indicate that variables of profitability and capital structure simultaneoously provide significant effect on company performance. Partially, only variabel of profitability ROE significantly affect company performance, while ROA not. Also DER variable of Capital Structure donâ€™t have significant affect on company performance.Keywords: Profitability, Capital Structure, Company Performance
THE ANALYSIS FISCAL CORRECTION IN THE CALCULATION OF INCOME TAX AGENCY
Authors: Sirait Rasisca , Hutajulu Fharel M. , Lumbantoruan Rutman
Published: June 2024

In the analysis performed on the income statement of commercial PT. Light the Universe Together obtained positive fiscal correction Rp. 157 312 678 while the number of negative fiscal correction Rp. -240 438 974. These results indicate the existence of differences between accounting profits and profits for tax purposes. Commercial profit for 2015 amounted to Rp. 2238427655 whereas the taxable income of Rp. 2,155,301,359 and the amount of corporate income tax on PT. Light the Universe Together is Rp. 487 205 085. The conclusion from this research that the taxation policy applied by PT. Light the Universe Together with the conduct of fiscal correction in accordance with the regulations and taxation law. The cost is a constraint only zakat corrected positively to a company PT. Light the Universe Together, while taxation should not be corrected in a positive, because according to the Finance Ministry Regulation No. 254 / PMK.03 / 2010 paragraph 1 states that Zakat or compulsory religious donations may be deducted from the gross income. while in the calculation of corporate income tax, the calculation was done by the company is accurate and not experience either error in calculating the number of installments of income tax and income tax payable Article 25Keywords: Fiscal Correction ,Calculation ,Tax Agency
The Relationship of The Discipline And Motivation On Performance Employees
Authors: Magani Yosephin Intan , L.Tobing Suzanna Josephine
Published: June 2024

A company certainly has a goal to develop its business, one of them by having a professional human resources and competent in the field. To achieve the company's goals, one of the things employee must do is apply the rules and regulations. In addition to building discipline, the role of a leader is also very important to give confidence to employees in carrying out their duties and pay attention to employees who complete the work exceeds the established standards. The quality of the work becomes an evaluation for the leaders and employees in the division. Discipline and motivation are closely related to employee performance for the progress of a company.Keywords : Company, Human Resources, Employee Performance
The RELATIONSHIP OF MOTIVATION, COMMITMENT AND WORK DISCIPLINE TO EMPLOYEES PERFORMANCE IN GENERAL HOSPITALS INDONESIAN CHRISTIAN UNIVERSITY
Authors: Hosiana Debora , Tampubolon Emma , Tobing Fenny B.N.L
Published: June 2024

Human resources owned by the company must have the ability to run a business, given the factors of service provided by these employees greatly determine the of the company in the future. The ability that have been possessed must continue to be honed continuously through work experience, training, competence, discipline, work motivation was to determine the relationship of motivation, commitment and work discipline to employee performance at the Indonesian Christian University General Hospital. This research is descriptive-quantitative with a sample population of 99 employees and correlations Rank Spearmaking and Hypothesis Test. That (1) motivation for the performance of employees of the Indonesian Christian University General Hospital. This is shown by obtaining tcount (5,107) greater than t table (1,661). (2) commitment to the performance of employees of the Indonesian Christian University General Hospital. This is indicated by the obtained tcount (6,805) greater than t table (1,661). (3) to work discipline with the performance of employees of the General University of Indonesia Christian Hospital. This is indicated by the obtained tcount (6.929) greater than t table (1.661). Based on study, it can be concluded that if motivation, commitment and work discipline are carried out properly, it performance of the Indonesian Christian University General Hospital, but it needs to be addressed and improved such as giving more motivation so that employees are more active in working so that the level of in accordance with the goals and company expectations. Keywords: motivation, commitment, work discipline and performance
The RELATIONSHIP OF LEADERSHIP STYLE, ORGANIZATIONAL CULTURE ON EMPLOYEE PERFORMANCE PT. AKA SINAR GROUP JAKARTA PUSAT
Authors: Siahaan Sincha , Sihombing Christina N. . , Tarigan Lukas
Published: June 2024

The purpose of this study is to see the relationship between leadership style and organizational culture, the relationship between leadership and employee performance at PT. AKA Sinar group data collection was carried out through the distribution of questionnaires. This study had a sample of 20 employees and the data were analyzed using Spearman rank correlation analysis using SPSS Version 20. Research can show that (1) seeing the relationship between leadership style and organizational culture with employee performance at PT. AKA Sinar group. With Rank Spearman analysis obtained correlation value of 0.556 with a significance of 0.011 < 0.05, positive value and thre is a moderate relatinship. (2) There is an relationship with employee performance at PT. AKA Sinar group obtained spearman rank correlation coefficient of (0.455) and the significance of 0.44 < 0.05, with these results can be taken a decision that is positive and there is a moderate relationship. Keyword: organizational culture, leadership, employee performance
The TRANSFORMATIONAL LEADERSHIP STYLE RELATIONS AND ORGANIZATIONAL CULTURE WITH EMPLOYEE WORK SATISFACTION PT. INDOMARCO PRISMATAMA
Authors: Situmorang Deby Friska , Anggraen Nenny i
Published: June 2024

labor is one of the important factors that must be considered by the company, both leaders and employees who are determinants in order to the a achieve company goals. This leadership style is basically a transformational leadership style that a leaders creating a vision and environment that motivates subordinates a expectations. besides that it takes organizational culture that is an employees to act, think, and solve problems so as to guide them in working. This research is descriptive correlational with a sample of 40 people and analysis data using Spearman rank analysis. Keywords: transformational leadership, organizational culture, job satisfaction
THE RELATIONSHIP BETWEEN GIVING INCENTIVES AND WORKPLACE STRESS ON JOB SATISFACTION OF GO-RIDE DRIVER PARTNERS IN CAWANG JAKARTA TIMUR
Authors: Sari Putu Indah Mariska , Anggraini Nenny
Published: June 2024

The purpose of this study is to determain the relationship between incentives and workplace stress on job satisfaction of GO-RIDE drivers partners in Cawang, East Jakarta. Everyone has extraordinary potential and has not been fully utilized. Labor is one of the important factors that must be considered by the company, both in term of providing incentives, workplace stress, and job statisfaction. The incentive is one of the strategies implemented by the company to stimulate the workforce to work optimally. And to improve the progress of the company must also pay attention to workplace stress experienced by employess so the employess can work well. Therefore giving incentives and attention to work stress is needed to be able to produce job satisfaction to driver-partners. The type of data in this study is quantitative data, the number of samples is 100 GO-RIDE driver-partners. Data obtained by distributing questionnaires to GO-RIDE driver-partners and calculated with the Likert Scale. This study using SPSS 24 to process the data. The results of this study indicate that there  is a relationship between providing incentives with job satisfaction shown in the Spearman Rank correlation coefficient of 0,676. And there is a relationship between workplace stress and job satisfaction shown by the Spearman Rank correlation coefficient of -0,627.
 Keywords : incentives,workplace stress, job satisfaction
THE INFLUENCE OF THE APPLICATION OF TOTAL QUALITY MANAGEMENT OF EMPLOYEE PRODUCTIVITY AGAINST GIANT EXTRA MEGA BEKASI
Authors: Samosir Octaviana Sarlinatua , Sidharta Juaniva
Published: June 2024

Intense competition would demand the company to provide quality products to the consumer. But the attention the company is not limited to the quality of the resulting product, but also on aspects of the process, the human resources (HR) and the environment. Giant hypermarket is a retail company in Indonesia which is facing competition in retail business which rapidly, one way that's done to Giant hypermarket compete by implementing Total Quality Management (TQM), through the continuous improvement of product, labor, and the environment. TQM is a system achieve the objectives of the Organization, one of them an increase in employee productivity.
 Keywords : the application of total quality management, the influence of the application of total quality management, factors in influencing the success.
THE INDONESIA-TIMOR LESTE BORDER ISSUES IN NUSA TENGGARA TIMUR PROVINCE
Authors: Kennedy Posma S.J.K. , L.Tobing Suzanna Josephine , Lumbantoruan Rutman , Tampubolon Emma
Published: June 2024

This paper aims to look at various strategic issues which are problems that exist in the Indonesia-Timor Leste border region in East Nusa Tenggara Province, both in the determination and affirmation of border areas, as well as economic, natural resource and environmental issues, conditions infrastructure, and population, social and cultural conditions. This paper uses qualitative methods, through documentation and literature tracing, with the primary source of National Border Management Regulation No. 1/2011 on the Design of State Border Management No. 1/2015 on the 2015-2019 State Border Management Master Plan. Strategic issues in managing border areas are mainly in the aspects of setting and affirming national boundaries and perspectives of enhancing defense and security and law enforcement. While the strategic issues concerning the land border area of Indonesia-Timor Leste in the Province of East Nusa Tenggara mainly regard economic conditions, natural resources and the environment, infrastructure conditions, and population, social and cultural conditions.
 
Keywords: Border Area, Land Border, East Nusa Tenggara, Timor Leste
PEMIMPIN YANG KREDIBLE DAN YANG
Authors: Allo Yusuf Rombe M.
Published: June 2024

Leadership is a process to influence or to give examole by by the leaders to their followers ini order to achieve the goal of the group or the company organization. The natural way to lern leadership is to do it in the job and to be an apprentice for a lecture, practitioner etc. in this relation  the leaders are expected to give their role as a lesson / instruction.  Credible leaders are leaders with hagh integrity who use thei power etically and morally,  fair and correct for their community.  Only the credible leaders could be a leader of vision who could rely on their way towards the future together.
Key Word : Credible leaders and leader of vision ae the process of influencing ethically and morally.
SISTEM INFORMASI PENGOLAHAN DATA AKUNTANSI PERUSAHAAN MENGGUNAKAN ZAHIR ACCOUNTING VERSI 5.1
Authors: Tyas Anindya Ikaning , Ela Revita Maria Lapriska Dian , Ariyati Indah
Published: June 2024

Technological developments have been used to support the company's performance in various fields. Company data processing related to cash outlays and cash income on CV. Green Iroha Bekasi which is still manually applied using accounting software, namely Zahir Accounting Version 5.1. Processing using Zahir Accounitng version 5.1 aims to ensure that all financial data in the company are not overlooked starting from estimates, recording, accounting to reports so that the company can find out the company's financial position in a certain period of time. Computerized financial data storage becomes safe and organized systematically and minimizes errors so as to facilitate decision making.
Keyword : information system, accounting data, zahir accounting
THE ANALYSIS OF THE INFLUENCE OF BRAND IMAGE AND PRODUCT QUALITY ON COSTUMER LOYALTY ICE CREAM WALL’S
Authors: Naibaho Joshua Perkasa , Sinaga Sautman , Juaniva Sidharta
Published: June 2024

Currently, business competition in the industry is getting tougher, one industry that has tough competition is the food & beverage industry. If competition in the industry increases, it will be difficult to find new consumers, while the company certainly wants a stable profit. Thus, the old company will try to maintain existing customer loyalty. In this study, we will examine, how brand image and product quality will be a weapon or asset for old company in business competition, and will also affect customer loyalty (in this case WALL’S). In this research will be conducted by descriptive analysis. The sample taken is people, who live in Limus Pratama Regency, as many as 100 respondents. And the variables used in this study are brand image, product quality, and costumer loyality.
Keywords: brand image, product quality, costumer loyality.
ANALYSIS OF FACTORS AFFECTING CONSUMERS IN BUYING KYT BRAND HELMET (Cace Study of Residents in Cawang East Jakarta)
Authors: Dewi  , Tobing Fenny BNL , Sihombing Christina N.
Published: June 2024

With the depelopment of technolog, there are many helmet products offered by producers toconsumers. Helmets, which are one of the products with a very rapid increase, have long been recognized by the public, namely the KYT helmet. Judging from the high consumer interest in buying KYT brand helmets, the demand for helmets increasing. The research was conducted on residents in the Cawang Village, Eas Jakarta with primary data sorcesobtained by researchers through a questionnaire distributed to 100 respondents. Meanwhile, secondary data were obtained from literature studies, questionnaires and other sources which are certainly related to this research. This research is quantitative in nature, namely using multiple linier regression analysis,instument testing, validity and reliabilitytesting, hypothesis testing, determintion coefficient test (R²), partial t test, and simultaneous f teston consumer buying decisions. To measure consumer purchasing decisions on the variables of teste, namely: type of model, color, and outer appearance (body), while for the quality variables, namely: comfort and durability.
Keywords: type of model, color, and outward appearance (body), while for quality variables, namely: comfort and durability
Nikša Bareza à la HBL
Authors: Radečić Karlo
Published: June 2024

U ovom se radu, na temelju istraživanja literature (većim dijelom periodike), arhivske građe i drugih izvora, kontakata s nekoliko inozemnih kulturnih ustanova te poznavanja pojedinih njegovih opernih i simfonijskih interpretacija, donosi izvorna biobibliografija Nikše Bareze (1936–2022), jednoga od najvećih hrvatskih dirigenata, u formi koja slijedi temeljna obilježja članka u Hrvatskome biografskom leksikonu (HBL) Leksikografskoga zavoda Miroslav Krleža (strukturiranost izlaganja, specifično ustrojen popis literature), ali s različitim odstupanjima od prirode leksikonskoga teksta, poput iscrpnosti i, najupadljivije, opremljenosti kritičkim aparatom. U takvoj se biobibliografiji à la HBL, jedinoj uz onu povjesničara i leksikografa Trpimira Macana što ju je 2005. napisao Nikša Lučić, združuju enciklopedijska leksikografija i glazbena historiografija. Popraćenost biobibliografije pisane u specifičnoj enciklopedičkoj formi standardnim znanstvenim kritičkim aparatom dijelom ujedno demonstrira i »skriveni rad« utkan u izradu mnogih članaka napisanih za Hrvatski biografski leksikon, tj., implicitno, metode, načela i izazove kritičkoga pisanja biografije u okviru enciklopedike uopće. U sklopu prve opširnije Barezine biobibliografije detaljno se opisuju njegova inozemna i domaća dirigentska karijera, pri čemu su popisane sve operne predstave koje je dirigirao u hrvatskim kazalištima i na domaćim festivalima, i njihova recepcija (što uključuje i izvatke iz kritika koncerata i opernih predstava te tekstova koji se njime podrobnije bave), a donosi se i detaljna originalna kritička ocjena njegova dirigentskoga habitusa te se utvrđuje njegovo mjesto među hrvatskim glazbenim reproduktivnim umjetnicima, kao i njegovo značenje za glazbeni život Hrvatske druge polovine XX. te početka XXI. stoljeća. U sklopu rada priložen je i Barezin operni repertoar.
1D analytic and numerical analysis of thin film heat transfer gauges and infra-red cameras in non-planar applications
Authors: Baker Mark , Rosic Budimir
Published: June 2024

The impulse response method is widely used for heat transfer analysis in turbomachinery applications. Traditionally, the 1D method assumes a: linear time invariant, isotropic, semi-infinite block with planar surfaces and does not accurately model the true geometric behaviour. This paper evaluates the error introduced by the planar assumption and outlines the required modifications for accurate freeform surface analysis. Adapted cylindrical basis functions are defined for the impulse response method and used to evaluate the impact of the 1D planar assumption. The analytic solutions for both convex and concave surfaces are presented. A penta-diagonal algorithm, for a modified numerical Crank-Nicolson scheme, is also evaluated for fast stable implementation of curved geometry simulation. The scheme shows comparable performance to the impulse response, whilst removing the requirement for linear time invariance. The new methods are demonstrated in the case of aerothermal analysis for heat transfer in a turbine nozzle guide vane. A 3D ANSYS simulation is used as a benchmark and further highlights the importance of the curvature effects. The methods are extended using curvature mapping for infra-red camera data, enabling direct 3D thermal simulation or the fast calculation of freeform curvature. This paper defines the methodology to analyse heat transfer measurements on non-planar geometry.
THE EFFECT OF VARIATION OF PERCENTAGE OF GREEN BANANA PEEL BIOETHANOL IN PERTAMAX FUEL ON GASOLINE MOTOR POWER
Authors: Adryansa Ivan , Firdaus Ahmad Hanif
Published: June 2024

Ketersediaan bahan bakar fosil semakin hari semakin berkurang, oleh karena itu perlu dilakukan pembaharuan salah satunya dengan mengganti bahan baku utama menggunakan bahan yang terbarukan salah satunya bioetanol. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh variasi persentase bioetanol pada bahan bakar Pertamax terhadap daya mesin bensin. Metode yang digunakan dalam penelitian ini adalah metode eksperimen dengan variasi konsentrasi campuran bioetanol dengan Pertamax yaitu 15%, 20%, 25% pada mesin bensin 125 cc pada putaran mesin 2000 hingga 7000 Rpm. Mendapatkan hasil terbaik dari campuran tersebut dimana campuran bioetanol 15% pada uji daya sebesar 7,93 Hp pada putaran 7000 Rpm.
MONITORING AND MANAGEMENT OF ELECTRIC MOTORCYCLE BATTERY SYSTEMS
Authors: Rahmad Hadi , Khalida Zulfa , Arif Saiful , Candra dewi Kartika , Mutiara Bahtiar Ahmad Dony
Published: June 2024

Some problems that often occur with electric motorbike batteries include overcharge, overdischarge and overheat. To avoid these problems, it is necessary to regulate or monitor the battery, which is called a Battery Management System (BMS). The BMS in this research is focused on the use of PSDKU Kediri electric motors. With this BMS design, it is hoped that it can be used as a reference in battery system management so that the battery lasts longer. In this study, 112 batteries were used, consisting of 14 series and 8 parallel. The voltage sensor circuit is made to determine the battery cell voltage so that overvoltage and undervoltage protection can be carried out. Measurements can be made using a multimeter by adjusting the reading position on the voltage. The maximum voltage produced is around 57.7 volts with a charging time of 7 hours
EKSISTENSI RADIO LOKAL SEBAGAI MEDIA PENDUKUNG PEMILU DI ACEH
Authors: Khalisni  , Saleh Rahmat
Published: June 2024

Di masa lalu, radio menjadi alat perjuangan yang mampu menginformasikan sebuah berita ke seluruh pelosok Indonesia. Walau alat penyiaran ini menjadi alternatif kedua karena dampak internet, banyak komunitas masih memanfaatkannya. Di Aceh terdapat radio-radio lokal yang aktif menginformasikan perkembangan pemilu dan politisi memanfaatkan peluang itu. Penelitian ini menjelaskan eksistensi radio dalam pelaksanaan pemilu baik sebagai media edukasi maupun kampanye. Studi fokus pada peran radio lokal di Aceh dalam pelaksanaan pemilu yang pada akhirnya mengkonfirmasi eksistensi radio lokal dalam mendukung seluruh tahapan pemilu. Pendekatan yang digunakan adalah pendekatan library reasearch berbasis pada data-data penelitian terdahulu untuk lingkup lokal Aceh. Hasil penelitian menunjukan bahwa radio lokal memilik peran sebagai media pendukung pemilu dengan menyajikan informasi-informasi yang akurat dan berimbang sehingga bisa menjadi peredam isu-isu hoaks yang berpotensi muncul di rentang waktu pelaksanaan pemilu. Selanjutnya radio lokal juga berperan sebagai jembatan antara masyarakat calon pemilih dengan para calon dan partai politik. Radio lokal berperan dalam memperkuat demokrasi di Aceh. Eksistensi radio lokal tetap terjaga di era disruptif saat ini karena radio-radio lokal di Aceh sudah melakukan konvergensi media dari konvensional ke digital dengan memanfaatkan teknologi dan platform media digital. Dengan demikian, eksistensi radio lokal tetap relevan dan berkontribusi dalam menyediakan konten yang bersifat lokal, terkini, dan bermanfaat bagi masyarakat Aceh.
Reduction of Colorado potato beetle damage by various organic mulches
Authors: Winkler Julian , Junge Stephan M. , Nasirahmadi Abozar , Hensel Oliver , Finckh Maria R. , Kirchner Sascha M.
Published: June 2024

Introduction

The Colorado potato beetle (Leptinotarsa decemlineata) (CPB) is a major threat to potato crops in Europe, Asia, and America. In Europe, it is expected that climate change will cause the species to expand its range northwards and allow for an additional generation per year in regions where it is already established. The effectiveness of insecticides, a common method of control, is decreasing due to the emergence of resistance to several substances. Therefore, research into alternative measures is becoming increasingly necessary. One preventive measure that has already been shown to have great effects in past studies is the use of organic mulch. For organic mulching, conserved or freshly cut plant material is spread on the field usually when the potato emerges. Previous research has mainly used cereal straw for this purpose in plots that are relatively small compared to actual agricultural fields.

Materials and methods

To address the lack of large-scale field trials in the literature, a series of on-station and on-farm field trials were conducted in this study. Organic, legume-rich mulches were used primarily, which so far have not been extensively investigated. Over a period of four years and in a total of six field trials, CPB and larval infestations were assessed.

Results and discussion

Our results show effects on the initial infestation of young plants by adult CPB and on the emergence time of the first two larval stages. By the time of flowering, when the feeding effect of CPB on yield is known to be greatest, L3 and L4 larvae were reduced by about 30% in the on-station trials and by about 40% in the on-farm trials. In addition, when CPB larval stages were used to calculate a weighted daily leaf consumption per stage, total calculated leaf consumption was on average about 40% lower in the mulch treatments across all sampling dates and all trials. The recorded yields were equal or higher in the mulched treatments. In conclusion, organic mulching can effectively reduce CPB damage even on a large scale and can have a positive impact on yield. Further agronomic benefits of mulching, as well as drawbacks and putative mechanisms of action, are discussed.
Exploring the biotechnological potential of novel soil-derived Klebsiella sp. and Chryseobacterium sp. strains using phytate as sole carbon source
Authors: Maldonado-Pava Julieth , Tapia-Perdomo Valentina , Estupinan-Cardenas Liliana , Puentes-Cala Edinson , Castillo-Villamizar Genis Andrés
Published: June 2024

Phosphorus (P) is essential for biological systems, playing a pivotal role in energy metabolism and forming crucial structural components of DNA and RNA. Yet its bioavailable forms are scarce. Phytate, a major form of stored phosphorus in cereals and soils, is poorly bioavailable due to its complex structure. Phytases, enzymes that hydrolyze phytate to release useable phosphorus, are vital in overcoming this limitation and have significant biotechnological applications. This study employed novel method to isolate and characterize bacterial strains capable of metabolizing phytate as the sole carbon and phosphorus source from the Andes mountains soils. Ten strains from the genera Klebsiella and Chryseobacterium were isolated, with Chryseobacterium sp. CP-77 and Klebsiella pneumoniae CP-84 showing specific activities of 3.5 ± 0.4 nkat/mg and 40.8 ± 5 nkat/mg, respectively. Genomic sequencing revealed significant genetic diversity, suggesting CP-77 may represent a novel Chryseobacterium species. A fosmid library screening identified several phytase genes, including a 3-phytase in CP-77 and a glucose 1-phosphatase and 3-phytase in CP-84. Phylogenetic analysis confirmed the novelty of these enzymes. These findings highlight the potential of phytase-producing bacteria in sustainable agriculture by enhancing phosphorus bioavailability, reducing reliance on synthetic fertilizers, and contributing to environmental management. This study expands our biotechnological toolkit for microbial phosphorus management and underscores the importance of exploring poorly characterized environments for novel microbial functions. The integration of direct cultivation with metagenomic screening offers robust approaches for discovering microbial biocatalysts, promoting sustainable agricultural practices, and advancing environmental conservation.
Temporal sex specific brain gene expression pattern during early rat embryonic development
Authors: Paylar Berkay , Pramanik Subrata , Bezabhe Yared H. , Olsson Per-Erik
Published: June 2024

Background: The classical concept of brain sex differentiation suggests that steroid hormones released from the gonads program male and female brains differently. However, several studies indicate that steroid hormones are not the only determinant of brain sex differentiation and that genetic differences could also be involved.

Methods: In this study, we have performed RNA sequencing of rat brains at embryonic days 12 (E12), E13, and E14. The aim was to identify differentially expressed genes between male and female rat brains during early development.

Results: Analysis of genes expressed with the highest sex differences showed that Xist was highly expressed in females having XX genotype with an increasing expression over time. Analysis of genes expressed with the highest male expression identified three early genes, Sry2, Eif2s3y, and Ddx3y.

Discussion: The observed sex-specific expression of genes at early development confirms that the rat brain is sexually dimorphic prior to gonadal action on the brain and identifies Sry2 and Eif2s3y as early genes contributing to male brain development.
Roles of estrogen and its receptors in polycystic ovary syndrome
Authors: Xu Yao , Zhang Ziyi , Wang Rongxiang , Xue Songguo , Ying Qian , Jin Liping
Published: June 2024

Polycystic ovary syndrome (PCOS) is an endocrine disorder characterized by abnormal steroid hormone levels in peripheral blood and poor-quality oocytes. In the ovary, androgen is produced by theca cells, and estrogen is produced by granulosa cells. Androgen is converted to estrogen in granulosa cells, with cytochrome P450 aromatase as the limiting enzyme during this process. Estrogen receptors (ER) include ER alpha, ER beta, and membrane receptor GPR30. Studies have demonstrated that the abnormal functions of estrogen and its receptors and estradiol synthesis-related enzymes are closely related to PCOS. In recent years, some estrogen-related drugs have made significant progress in clinical application for subfertility with PCOS, such as letrozole and clomiphene. This article will elaborate on the recent advances in PCOS caused by abnormal expression of estrogen and its receptors and the application of related targeted small molecule drugs in clinical research and treatment.
Molecular characterization of carbapenem and ceftazidime-avibactam-resistant Enterobacterales and horizontal spread of blaNDM-5 gene at a Lebanese medical center
Authors: Sobh Ghena , Araj George F. , Finianos Marc , Sourenian Tsolaire , Hrabak Jaroslav , Papagiannitsis Costas C. , Chaar Mira El , Bitar Ibrahim
Published: June 2024

Introduction

In the battle against multidrug-resistant bacterial infections, ceftazidime- avibactam (CZA) stands as a pivotal defense, particularly against carbapenemresistant (CR) Gram-negative pathogens. However, the rise in resistance against this drug poses a significant threat to its effectiveness, highlighting the critical need for in-depth studies about its resistance mechanisms.

Methods

This research focuses on the genomic characterization of CR- and CZA-resistant Escherichia coli (n=26) and Klebsiella pneumoniae (n=34) strains, harboring the blaNDM and/or blaOXA-48-like genes, at a major Lebanese tertiary care medical center, using whole genome sequencing (WGS).

Results

Our findings revealed a notable prevalence of blaNDM in all K. pneumoniae strains isolates, with 27 of these also harboring blaOXA-48. On the other hand, E. coli strains predominantly carried the blaNDM-5 gene. Whole genome sequencing (WGS) identified a predominance of ST383 among K. pneumoniae strains, which possessed a multi-replicon IncFIB-IncHI1B plasmid harboring the blaNDM-5. Additionally, various Inc group plasmids in K. pneumoniae across multiple sequence types were found to carry the blaNDM. Similarly, diverse STs of E. coli were observed to carry blaNDM-5 on different plasmids.

Discussion

The study underscores NDM carbapenemases as a paramount resistance mechanism in Lebanon,jeopardizing critical last-resort treatments. It also illuminates the role of varied sequence types and mobile genetic elements in the spread of NDM resistance,stressing the urgent need for strategies to mitigate this threat, especially in nosocomial infections.
Evaluation of dynamical downscaling in a fully coupled regional earth system model
Authors: Seefeldt Mark W. , Cassano John J. , Lee Younjoo J. , Maslowski Wieslaw , Craig Anthony P. , Osinski Robert
Published: June 2024

A set of decadal simulations has been completed and evaluated for gains using the Regional Arctic System Model (RASM) to dynamically downscale data from a global Earth system model and two atmospheric reanalyses. RASM is a fully coupled atmosphere–land–ocean–sea ice regional Earth system model. Nudging to the forcing data is applied to approximately the top half of the atmospheric domain. RASM simulations were also completed with a modification to the atmospheric physics for evaluating changes to the modeling system. The results show that for the top half of the atmosphere, the RASM simulations follow closely to that of the forcing data, regardless of the forcing data. The results for the lower half of the atmosphere, as well as the surface, show a clustering of atmospheric state and surface fluxes based on the modeling system. At all levels of the atmosphere the imprint of the weather from the forcing data is present as indicated in the pattern of the annual means. Biases, in comparison to reanalyses, are evident in the Earth system model forced simulations for the top half of the atmosphere but are not present in the lower atmosphere. This suggests that bias correction is not needed for fully coupled dynamical downscaling simulations. While the RASM simulations tended to go to the same mean state for the lower atmosphere, there are a differences in the variability and changes of weather patterns across the ensemble of simulations. These differences in the weather result in variances in the sea ice and oceanic states.
Experimental research on creep characteristics and failure mechanism of mining roadway in nearly vertical coal seams
Authors: Bai Peng , Li Zhiyong , Yu Cong , Liu Enqiang , Gao Hui , Xie Yuanman , Yan Zhongming
Published: June 2024

Introduction: Nearly vertical coal seams present a significant challenge for the coal mining industry due to their difficult accessibility. However, these seams account for a substantial proportion of the world’s coal reserves. Therefore, it is vital to conduct research on disaster control techniques for safe mining of these seams.

Method: The research team used experimental research, theoretical analysis, and numerical calculation methods to investigate the creep characteristics and failure mechanisms of layered sandstone roadway in nearly vertical coal seam.

Results and discussion: These findings revealed that the maximum moment and concentrated stress of the sandstone located on the side of the roadway roof was positioned in the middle of the nearly vertical structure, making it more susceptible to transverse shear failure. On the other hand, the nearly vertical structure on the floor side was prone to shear slip failure initiated from the bottom of the structure. This led to the asymmetric instability of the roadway. The practical implications of this research are significant for the safe mining of nearly vertical coal seams. The results could help inform the development of disaster control techniques.
Fibroblast growth factor signaling in macrophage polarization: impact on health and diseases
Authors: Shen Luyao , Li Yongsheng , Zhao Huakan
Published: June 2024

Fibroblast growth factors (FGFs) are a versatile family of peptide growth factors that are involved in various biological functions, including cell growth and differentiation, embryonic development, angiogenesis, and metabolism. Abnormal FGF/FGF receptor (FGFR) signaling has been implicated in the pathogenesis of multiple diseases such as cancer, metabolic diseases, and inflammatory diseases. It is worth noting that macrophage polarization, which involves distinct functional phenotypes, plays a crucial role in tissue repair, homeostasis maintenance, and immune responses. Recent evidence suggests that FGF/FGFR signaling closely participates in the polarization of macrophages, indicating that they could be potential targets for therapeutic manipulation of diseases associated with dysfunctional macrophages. In this article, we provide an overview of the structure, function, and downstream regulatory pathways of FGFs, as well as crosstalk between FGF signaling and macrophage polarization. Additionally, we summarize the potential application of harnessing FGF signaling to modulate macrophage polarization.